From 4e4d6d860b9393c5395ba5920edb5b4c5d43a3a3 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sun, 18 Dec 2011 20:05:43 -0800 Subject: sysfs: Add s_hash to sysfs_dirent and order directory entries by hash Compute a 31 bit hash of directory entries (that can fit in a signed 32bit off_t) and index the sysfs directory entries by that hash, replacing the per directory indexes by name and by inode. Because we now only use a single rbtree this reduces the size of sysfs_dirent by 2 pointers. Because we have fewer cases to deal with the code is now simpler. For now I use the simple hash that the dcache uses as that is easy to use and seems simple enough. In addition to makeing the code simpler using a hash for the file position in readdir brings sysfs in line with other filesystems that have non-trivial directory structures. Signed-off-by: Eric W. Biederman Signed-off-by: Greg Kroah-Hartman diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 7fdf6a7..0daf255 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -22,76 +22,103 @@ #include #include #include +#include #include "sysfs.h" DEFINE_MUTEX(sysfs_mutex); DEFINE_SPINLOCK(sysfs_assoc_lock); +#define to_sysfs_dirent(X) rb_entry((X), struct sysfs_dirent, s_rb); + static DEFINE_SPINLOCK(sysfs_ino_lock); static DEFINE_IDA(sysfs_ino_ida); /** - * sysfs_link_sibling - link sysfs_dirent into sibling list + * sysfs_name_hash + * @ns: Namespace tag to hash + * @name: Null terminated string to hash + * + * Returns 31 bit hash of ns + name (so it fits in an off_t ) + */ +static unsigned int sysfs_name_hash(const void *ns, const char *name) +{ + unsigned long hash = init_name_hash(); + unsigned int len = strlen(name); + while (len--) + hash = partial_name_hash(*name++, hash); + hash = ( end_name_hash(hash) ^ hash_ptr( (void *)ns, 31 ) ); + hash &= 0x7fffffffU; + /* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */ + if (hash < 1) + hash += 2; + if (hash >= INT_MAX) + hash = INT_MAX - 1; + return hash; +} + +static int sysfs_name_compare(unsigned int hash, const void *ns, + const char *name, const struct sysfs_dirent *sd) +{ + if (hash != sd->s_hash) + return hash - sd->s_hash; + if (ns != sd->s_ns) + return ns - sd->s_ns; + return strcmp(name, sd->s_name); +} + +static int sysfs_sd_compare(const struct sysfs_dirent *left, + const struct sysfs_dirent *right) +{ + return sysfs_name_compare(left->s_hash, left->s_ns, left->s_name, + right); +} + +/** + * sysfs_link_subling - link sysfs_dirent into sibling rbtree * @sd: sysfs_dirent of interest * - * Link @sd into its sibling list which starts from + * Link @sd into its sibling rbtree which starts from * sd->s_parent->s_dir.children. * * Locking: * mutex_lock(sysfs_mutex) + * + * RETURNS: + * 0 on susccess -EEXIST on failure. */ -static void sysfs_link_sibling(struct sysfs_dirent *sd) +static int sysfs_link_sibling(struct sysfs_dirent *sd) { - struct sysfs_dirent *parent_sd = sd->s_parent; - - struct rb_node **p; - struct rb_node *parent; + struct rb_node **node = &sd->s_parent->s_dir.children.rb_node; + struct rb_node *parent = NULL; if (sysfs_type(sd) == SYSFS_DIR) - parent_sd->s_dir.subdirs++; - - p = &parent_sd->s_dir.inode_tree.rb_node; - parent = NULL; - while (*p) { - parent = *p; -#define node rb_entry(parent, struct sysfs_dirent, inode_node) - if (sd->s_ino < node->s_ino) { - p = &node->inode_node.rb_left; - } else if (sd->s_ino > node->s_ino) { - p = &node->inode_node.rb_right; - } else { - printk(KERN_CRIT "sysfs: inserting duplicate inode '%lx'\n", - (unsigned long) sd->s_ino); - BUG(); - } -#undef node - } - rb_link_node(&sd->inode_node, parent, p); - rb_insert_color(&sd->inode_node, &parent_sd->s_dir.inode_tree); - - p = &parent_sd->s_dir.name_tree.rb_node; - parent = NULL; - while (*p) { - int c; - parent = *p; -#define node rb_entry(parent, struct sysfs_dirent, name_node) - c = strcmp(sd->s_name, node->s_name); - if (c < 0) { - p = &node->name_node.rb_left; - } else { - p = &node->name_node.rb_right; - } -#undef node + sd->s_parent->s_dir.subdirs++; + + while (*node) { + struct sysfs_dirent *pos; + int result; + + pos = to_sysfs_dirent(*node); + parent = *node; + result = sysfs_sd_compare(sd, pos); + if (result < 0) + node = &pos->s_rb.rb_left; + else if (result > 0) + node = &pos->s_rb.rb_right; + else + return -EEXIST; } - rb_link_node(&sd->name_node, parent, p); - rb_insert_color(&sd->name_node, &parent_sd->s_dir.name_tree); + /* add new node and rebalance the tree */ + rb_link_node(&sd->s_rb, parent, node); + rb_insert_color(&sd->s_rb, &sd->s_parent->s_dir.children); + return 0; } /** - * sysfs_unlink_sibling - unlink sysfs_dirent from sibling list + * sysfs_unlink_sibling - unlink sysfs_dirent from sibling rbtree * @sd: sysfs_dirent of interest * - * Unlink @sd from its sibling list which starts from + * Unlink @sd from its sibling rbtree which starts from * sd->s_parent->s_dir.children. * * Locking: @@ -102,8 +129,7 @@ static void sysfs_unlink_sibling(struct sysfs_dirent *sd) if (sysfs_type(sd) == SYSFS_DIR) sd->s_parent->s_dir.subdirs--; - rb_erase(&sd->inode_node, &sd->s_parent->s_dir.inode_tree); - rb_erase(&sd->name_node, &sd->s_parent->s_dir.name_tree); + rb_erase(&sd->s_rb, &sd->s_parent->s_dir.children); } /** @@ -402,6 +428,7 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt, int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd) { struct sysfs_inode_attrs *ps_iattr; + int ret; if (!!sysfs_ns_type(acxt->parent_sd) != !!sd->s_ns) { WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n", @@ -410,12 +437,12 @@ int __sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd) return -EINVAL; } - if (sysfs_find_dirent(acxt->parent_sd, sd->s_ns, sd->s_name)) - return -EEXIST; - + sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name); sd->s_parent = sysfs_get(acxt->parent_sd); - sysfs_link_sibling(sd); + ret = sysfs_link_sibling(sd); + if (ret) + return ret; /* Update timestamps on the parent */ ps_iattr = acxt->parent_sd->s_iattr; @@ -565,8 +592,8 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd, const void *ns, const unsigned char *name) { - struct rb_node *p = parent_sd->s_dir.name_tree.rb_node; - struct sysfs_dirent *found = NULL; + struct rb_node *node = parent_sd->s_dir.children.rb_node; + unsigned int hash; if (!!sysfs_ns_type(parent_sd) != !!ns) { WARN(1, KERN_WARNING "sysfs: ns %s in '%s' for '%s'\n", @@ -575,33 +602,21 @@ struct sysfs_dirent *sysfs_find_dirent(struct sysfs_dirent *parent_sd, return NULL; } - while (p) { - int c; -#define node rb_entry(p, struct sysfs_dirent, name_node) - c = strcmp(name, node->s_name); - if (c < 0) { - p = node->name_node.rb_left; - } else if (c > 0) { - p = node->name_node.rb_right; - } else { - found = node; - p = node->name_node.rb_left; - } -#undef node - } - - if (found) { - while (found->s_ns != ns) { - p = rb_next(&found->name_node); - if (!p) - return NULL; - found = rb_entry(p, struct sysfs_dirent, name_node); - if (strcmp(name, found->s_name)) - return NULL; - } + hash = sysfs_name_hash(ns, name); + while (node) { + struct sysfs_dirent *sd; + int result; + + sd = to_sysfs_dirent(node); + result = sysfs_name_compare(hash, ns, name, sd); + if (result < 0) + node = node->rb_left; + else if (result > 0) + node = node->rb_right; + else + return sd; } - - return found; + return NULL; } /** @@ -804,9 +819,9 @@ static void __sysfs_remove_dir(struct sysfs_dirent *dir_sd) pr_debug("sysfs %s: removing dir\n", dir_sd->s_name); sysfs_addrm_start(&acxt, dir_sd); - pos = rb_first(&dir_sd->s_dir.inode_tree); + pos = rb_first(&dir_sd->s_dir.children); while (pos) { - struct sysfs_dirent *sd = rb_entry(pos, struct sysfs_dirent, inode_node); + struct sysfs_dirent *sd = to_sysfs_dirent(pos); pos = rb_next(pos); if (sysfs_type(sd) != SYSFS_DIR) sysfs_remove_one(&acxt, sd); @@ -919,38 +934,36 @@ static int sysfs_dir_release(struct inode *inode, struct file *filp) } static struct sysfs_dirent *sysfs_dir_pos(const void *ns, - struct sysfs_dirent *parent_sd, ino_t ino, struct sysfs_dirent *pos) + struct sysfs_dirent *parent_sd, loff_t hash, struct sysfs_dirent *pos) { if (pos) { int valid = !(pos->s_flags & SYSFS_FLAG_REMOVED) && pos->s_parent == parent_sd && - ino == pos->s_ino; + hash == pos->s_hash; sysfs_put(pos); if (!valid) pos = NULL; } - if (!pos && (ino > 1) && (ino < INT_MAX)) { - struct rb_node *p = parent_sd->s_dir.inode_tree.rb_node; - while (p) { -#define node rb_entry(p, struct sysfs_dirent, inode_node) - if (ino < node->s_ino) { - pos = node; - p = node->inode_node.rb_left; - } else if (ino > node->s_ino) { - p = node->inode_node.rb_right; - } else { - pos = node; + if (!pos && (hash > 1) && (hash < INT_MAX)) { + struct rb_node *node = parent_sd->s_dir.children.rb_node; + while (node) { + pos = to_sysfs_dirent(node); + + if (hash < pos->s_hash) + node = node->rb_left; + else if (hash > pos->s_hash) + node = node->rb_right; + else break; - } -#undef node } } + /* Skip over entries in the wrong namespace */ while (pos && pos->s_ns != ns) { - struct rb_node *p = rb_next(&pos->inode_node); - if (!p) + struct rb_node *node = rb_next(&pos->s_rb); + if (!node) pos = NULL; else - pos = rb_entry(p, struct sysfs_dirent, inode_node); + pos = to_sysfs_dirent(node); } return pos; } @@ -960,11 +973,11 @@ static struct sysfs_dirent *sysfs_dir_next_pos(const void *ns, { pos = sysfs_dir_pos(ns, parent_sd, ino, pos); if (pos) do { - struct rb_node *p = rb_next(&pos->inode_node); - if (!p) + struct rb_node *node = rb_next(&pos->s_rb); + if (!node) pos = NULL; else - pos = rb_entry(p, struct sysfs_dirent, inode_node); + pos = to_sysfs_dirent(node); } while (pos && pos->s_ns != ns); return pos; } @@ -1006,7 +1019,7 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir) len = strlen(name); ino = pos->s_ino; type = dt_type(pos); - filp->f_pos = ino; + filp->f_pos = pos->s_hash; filp->private_data = sysfs_get(pos); mutex_unlock(&sysfs_mutex); diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 7484a36..2b5c923 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -20,9 +20,8 @@ struct sysfs_elem_dir { struct kobject *kobj; unsigned long subdirs; - - struct rb_root inode_tree; - struct rb_root name_tree; + /* children rbtree starts here and goes through sd->s_rb */ + struct rb_root children; }; struct sysfs_elem_symlink { @@ -62,8 +61,7 @@ struct sysfs_dirent { struct sysfs_dirent *s_parent; const char *s_name; - struct rb_node inode_node; - struct rb_node name_node; + struct rb_node s_rb; union { struct completion *completion; @@ -71,6 +69,7 @@ struct sysfs_dirent { } u; const void *s_ns; /* namespace tag */ + unsigned int s_hash; /* ns + name hash */ union { struct sysfs_elem_dir s_dir; struct sysfs_elem_symlink s_symlink; -- cgit v0.10.2 From 15a3382451e51925facfe430deeca63d90137f5d Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sun, 18 Dec 2011 20:07:23 -0800 Subject: sysfs: Reduce s_flags to an unsinged short so it packs well with s_mode On 32bit this reduces sizeof(struct sysfs_dirent) by 2 bytes. Signed-off-by: Eric W. Biederman Signed-off-by: Greg Kroah-Hartman diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 2b5c923..1999494 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -77,7 +77,7 @@ struct sysfs_dirent { struct sysfs_elem_bin_attr s_bin_attr; }; - unsigned int s_flags; + unsigned short s_flags; umode_t s_mode; ino_t s_ino; struct sysfs_inode_attrs *s_iattr; @@ -94,11 +94,11 @@ struct sysfs_dirent { #define SYSFS_ACTIVE_REF (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR) /* identify any namespace tag on sysfs_dirents */ -#define SYSFS_NS_TYPE_MASK 0xff00 +#define SYSFS_NS_TYPE_MASK 0xf00 #define SYSFS_NS_TYPE_SHIFT 8 #define SYSFS_FLAG_MASK ~(SYSFS_NS_TYPE_MASK|SYSFS_TYPE_MASK) -#define SYSFS_FLAG_REMOVED 0x020000 +#define SYSFS_FLAG_REMOVED 0x02000 static inline unsigned int sysfs_type(struct sysfs_dirent *sd) { -- cgit v0.10.2 From cafa6b5dd7ce4f0e0a30be301be4efed587a7808 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sun, 18 Dec 2011 20:08:16 -0800 Subject: sysfs: Store the sysfs inode in an unsigned int. Store the sysfs inode number in an unsided int because ida inode allocator can return at most a 31 bit number, reducing the size of struct sysfs_dirent by 8 bytes on 64bit platforms. Signed-off-by: Eric W. Biederman Signed-off-by: Greg Kroah-Hartman diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 0daf255..0589c9a 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -224,7 +224,7 @@ static void sysfs_deactivate(struct sysfs_dirent *sd) rwsem_release(&sd->dep_map, 1, _RET_IP_); } -static int sysfs_alloc_ino(ino_t *pino) +static int sysfs_alloc_ino(unsigned int *pino) { int ino, rc; @@ -243,7 +243,7 @@ static int sysfs_alloc_ino(ino_t *pino) return rc; } -static void sysfs_free_ino(ino_t ino) +static void sysfs_free_ino(unsigned int ino) { spin_lock(&sysfs_ino_lock); ida_remove(&sysfs_ino_ida, ino); diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 1999494..661a963 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -79,7 +79,7 @@ struct sysfs_dirent { unsigned short s_flags; umode_t s_mode; - ino_t s_ino; + unsigned int s_ino; struct sysfs_inode_attrs *s_iattr; }; -- cgit v0.10.2 From 524b6c5b39b931311dfe5a2f5abae2f5c9731676 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sun, 18 Dec 2011 20:09:31 -0800 Subject: sysfs: Kill nlink counting. Tracking the number of subdirectories requires an extra field that increases the size of sysfs_dirent. nlinks are not particularly interesting for sysfs and the nlink counts are wrong when network namespaces are involved so stop counting them, and always return nlink == 1. Userspace already knows that directories with nlink == 1 have an nlink count they can't use to count subdirectories. This reduces the size of sysfs_dirent by 8 bytes on 64bit platforms. Signed-off-by: Eric W. Biederman Signed-off-by: Greg Kroah-Hartman diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 0589c9a..ea64d01 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -91,9 +91,6 @@ static int sysfs_link_sibling(struct sysfs_dirent *sd) struct rb_node **node = &sd->s_parent->s_dir.children.rb_node; struct rb_node *parent = NULL; - if (sysfs_type(sd) == SYSFS_DIR) - sd->s_parent->s_dir.subdirs++; - while (*node) { struct sysfs_dirent *pos; int result; @@ -126,9 +123,6 @@ static int sysfs_link_sibling(struct sysfs_dirent *sd) */ static void sysfs_unlink_sibling(struct sysfs_dirent *sd) { - if (sysfs_type(sd) == SYSFS_DIR) - sd->s_parent->s_dir.subdirs--; - rb_erase(&sd->s_rb, &sd->s_parent->s_dir.children); } diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c index 4a802b4..0ac3e1c 100644 --- a/fs/sysfs/inode.c +++ b/fs/sysfs/inode.c @@ -216,9 +216,6 @@ static void sysfs_refresh_inode(struct sysfs_dirent *sd, struct inode *inode) iattrs->ia_secdata, iattrs->ia_secdata_len); } - - if (sysfs_type(sd) == SYSFS_DIR) - set_nlink(inode, sd->s_dir.subdirs + 2); } int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 661a963..6289a00 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -19,7 +19,6 @@ struct sysfs_open_dirent; struct sysfs_elem_dir { struct kobject *kobj; - unsigned long subdirs; /* children rbtree starts here and goes through sd->s_rb */ struct rb_root children; }; -- cgit v0.10.2 From 07100be7e0495ff39237d48886bca7396c873db7 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:11:09 -0500 Subject: dynamic_debug: fix whitespace complaints from scripts/cleanfile Style cleanups. Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index dcdade3..e487d13 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -187,7 +187,7 @@ static int ddebug_tokenize(char *buf, char *words[], int maxwords) if (!*buf) break; /* oh, it was trailing whitespace */ - /* Run `end' over a word, either whitespace separated or quoted */ + /* find `end' of word, whitespace separated or quoted */ if (*buf == '"' || *buf == '\'') { int quote = *buf++; for (end = buf ; *end && *end != quote ; end++) @@ -199,8 +199,8 @@ static int ddebug_tokenize(char *buf, char *words[], int maxwords) ; BUG_ON(end == buf); } - /* Here `buf' is the start of the word, `end' is one past the end */ + /* `buf' is start of word, `end' is one past its end */ if (nwords == maxwords) return -EINVAL; /* ran out of words[] before bytes */ if (*end) @@ -452,7 +452,8 @@ static char *dynamic_emit_prefix(const struct _ddebug *desc, char *buf) pos += snprintf(buf + pos, remaining(pos), "%s:", desc->function); if (desc->flags & _DPRINTK_FLAGS_INCL_LINENO) - pos += snprintf(buf + pos, remaining(pos), "%d:", desc->lineno); + pos += snprintf(buf + pos, remaining(pos), "%d:", + desc->lineno); if (pos - pos_after_tid) pos += snprintf(buf + pos, remaining(pos), " "); if (pos >= PREFIX_SIZE) @@ -708,10 +709,11 @@ static const struct seq_operations ddebug_proc_seqops = { }; /* - * File_ops->open method for /dynamic_debug/control. Does the seq_file - * setup dance, and also creates an iterator to walk the _ddebugs. - * Note that we create a seq_file always, even for O_WRONLY files - * where it's not needed, as doing so simplifies the ->release method. + * File_ops->open method for /dynamic_debug/control. Does + * the seq_file setup dance, and also creates an iterator to walk the + * _ddebugs. Note that we create a seq_file always, even for O_WRONLY + * files where it's not needed, as doing so simplifies the ->release + * method. */ static int ddebug_proc_open(struct inode *inode, struct file *file) { -- cgit v0.10.2 From 87e6f968339bcdda56b39572c7e63331192296a0 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:11:13 -0500 Subject: dynamic_debug: drop enabled field from struct _ddebug, use _DPRINTK_FLAGS_PRINT Currently any enabled dynamic-debug flag on a pr_debug callsite will enable printing, even if _DPRINTK_FLAGS_PRINT is off. Checking print flag directly allows "-p" to disable callsites without fussing with other flags, so the following disables everything, without altering flags user may have set: echo -p > $DBGFS/dynamic_debug/control Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 0564e3c..f71a6b04 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -28,7 +28,6 @@ struct _ddebug { #define _DPRINTK_FLAGS_INCL_TID (1<<4) #define _DPRINTK_FLAGS_DEFAULT 0 unsigned int flags:8; - char enabled; } __attribute__((aligned(8))); @@ -62,21 +61,20 @@ int __dynamic_netdev_dbg(struct _ddebug *descriptor, .format = (fmt), \ .lineno = __LINE__, \ .flags = _DPRINTK_FLAGS_DEFAULT, \ - .enabled = false, \ } #define dynamic_pr_debug(fmt, ...) \ do { \ DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ - if (unlikely(descriptor.enabled)) \ + if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ __dynamic_pr_debug(&descriptor, pr_fmt(fmt), \ ##__VA_ARGS__); \ } while (0) #define dynamic_dev_dbg(dev, fmt, ...) \ do { \ - DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ - if (unlikely(descriptor.enabled)) \ + DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ + if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ __dynamic_dev_dbg(&descriptor, dev, fmt, \ ##__VA_ARGS__); \ } while (0) @@ -84,7 +82,7 @@ do { \ #define dynamic_netdev_dbg(dev, fmt, ...) \ do { \ DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \ - if (unlikely(descriptor.enabled)) \ + if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)) \ __dynamic_netdev_dbg(&descriptor, dev, fmt, \ ##__VA_ARGS__); \ } while (0) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index e487d13..416c079 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -151,10 +151,6 @@ static void ddebug_change(const struct ddebug_query *query, if (newflags == dp->flags) continue; dp->flags = newflags; - if (newflags) - dp->enabled = 1; - else - dp->enabled = 0; if (verbose) pr_info("changed %s:%d [%s]%s %s\n", dp->filename, dp->lineno, -- cgit v0.10.2 From b558c96ffa53f4b3dd52b774e4fb7a52982ab52b Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:11:18 -0500 Subject: dynamic_debug: make dynamic-debug supersede DEBUG ccflag If CONFIG_DYNAMIC_DEBUG is defined, honor it over DEBUG, so that pr_debug()s are controllable, instead of always-on. When DEBUG is also defined, change _DPRINTK_FLAGS_DEFAULT to enable printing by default. Also adding _DPRINTK_FLAGS_INCL_MODNAME would be nice, but there are numerous cases of pr_debug(NAME ": ...), which would result in double printing of module-name. So defer this until things settle. Cc: David Miller Cc: Joe Perches Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/include/linux/device.h b/include/linux/device.h index 5b3adb8..a782d7f 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -945,14 +945,14 @@ int _dev_info(const struct device *dev, const char *fmt, ...) #define dev_info(dev, fmt, arg...) _dev_info(dev, fmt, ##arg) -#if defined(DEBUG) -#define dev_dbg(dev, format, arg...) \ - dev_printk(KERN_DEBUG, dev, format, ##arg) -#elif defined(CONFIG_DYNAMIC_DEBUG) +#if defined(CONFIG_DYNAMIC_DEBUG) #define dev_dbg(dev, format, ...) \ do { \ dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \ } while (0) +#elif defined(DEBUG) +#define dev_dbg(dev, format, arg...) \ + dev_printk(KERN_DEBUG, dev, format, ##arg) #else #define dev_dbg(dev, format, arg...) \ ({ \ diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index f71a6b04..29ea09a 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -26,7 +26,11 @@ struct _ddebug { #define _DPRINTK_FLAGS_INCL_FUNCNAME (1<<2) #define _DPRINTK_FLAGS_INCL_LINENO (1<<3) #define _DPRINTK_FLAGS_INCL_TID (1<<4) +#if defined DEBUG +#define _DPRINTK_FLAGS_DEFAULT _DPRINTK_FLAGS_PRINT +#else #define _DPRINTK_FLAGS_DEFAULT 0 +#endif unsigned int flags:8; } __attribute__((aligned(8))); diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 0eac07c..f486f63 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -2687,14 +2687,14 @@ int netdev_info(const struct net_device *dev, const char *format, ...); #define MODULE_ALIAS_NETDEV(device) \ MODULE_ALIAS("netdev-" device) -#if defined(DEBUG) -#define netdev_dbg(__dev, format, args...) \ - netdev_printk(KERN_DEBUG, __dev, format, ##args) -#elif defined(CONFIG_DYNAMIC_DEBUG) +#if defined(CONFIG_DYNAMIC_DEBUG) #define netdev_dbg(__dev, format, args...) \ do { \ dynamic_netdev_dbg(__dev, format, ##args); \ } while (0) +#elif defined(DEBUG) +#define netdev_dbg(__dev, format, args...) \ + netdev_printk(KERN_DEBUG, __dev, format, ##args) #else #define netdev_dbg(__dev, format, args...) \ ({ \ diff --git a/include/linux/printk.h b/include/linux/printk.h index f0e22f7..f9abd93 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -180,13 +180,13 @@ extern void dump_stack(void) __cold; #endif /* If you are writing a driver, please use dev_dbg instead */ -#if defined(DEBUG) -#define pr_debug(fmt, ...) \ - printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) -#elif defined(CONFIG_DYNAMIC_DEBUG) +#if defined(CONFIG_DYNAMIC_DEBUG) /* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */ #define pr_debug(fmt, ...) \ dynamic_pr_debug(fmt, ##__VA_ARGS__) +#elif defined(DEBUG) +#define pr_debug(fmt, ...) \ + printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) #else #define pr_debug(fmt, ...) \ no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__) -- cgit v0.10.2 From 74df138d508eb35e8b929e165e5403cfbb46a0c5 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:12:24 -0500 Subject: dynamic_debug: change verbosity at runtime Allow changing dynamic_debug verbosity at run-time, to ease debugging of ddebug queries as you add them, improving usability. at boot time: dynamic_debug.verbose=1 at runtime: root@voyage:~# echo 1 > /sys/module/dynamic_debug/parameters/verbose Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 416c079..8c88b89 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -60,6 +60,7 @@ struct ddebug_iter { static DEFINE_MUTEX(ddebug_lock); static LIST_HEAD(ddebug_tables); static int verbose = 0; +module_param(verbose, int, 0644); /* Return the last part of a pathname */ static inline const char *basename(const char *path) -- cgit v0.10.2 From bc757f6f5bf4e9251bbc1a3419c94ffe9fd3e2ee Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:12:29 -0500 Subject: dynamic_debug: replace strcpy with strlcpy, in ddebug_setup_query() Replace strcpy with strlcpy, and add define for the size constant. [jbaron@redhat.com: Use DDEBUG_STRING_SIZE for overflow check] Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 8c88b89..6fc8622 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -525,14 +525,16 @@ EXPORT_SYMBOL(__dynamic_netdev_dbg); #endif -static __initdata char ddebug_setup_string[1024]; +#define DDEBUG_STRING_SIZE 1024 +static __initdata char ddebug_setup_string[DDEBUG_STRING_SIZE]; + static __init int ddebug_setup_query(char *str) { - if (strlen(str) >= 1024) { + if (strlen(str) >= DDEBUG_STRING_SIZE) { pr_warn("ddebug boot param string too large\n"); return 0; } - strcpy(ddebug_setup_string, str); + strlcpy(ddebug_setup_string, str, DDEBUG_STRING_SIZE); return 1; } -- cgit v0.10.2 From ae27f86a21eb9a9e005f06b126eb88662ba4f940 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:12:34 -0500 Subject: dynamic_debug: pr_err() call should not depend upon verbosity Issue keyword/parsing errors even w/o verbose set; uncover otherwize mysterious non-functionality. Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 6fc8622..d232025 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -322,8 +322,7 @@ static int ddebug_parse_query(char *words[], int nwords, query->last_lineno = query->first_lineno; } } else { - if (verbose) - pr_err("unknown keyword \"%s\"\n", words[i]); + pr_err("unknown keyword \"%s\"\n", words[i]); return -EINVAL; } } -- cgit v0.10.2 From d6a238d25014d0ff918410d73e2a6300bca5d1f1 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:12:39 -0500 Subject: dynamic_debug: drop explicit !=NULL checks Convert 'if (x !=NULL)' checks into 'if (x)'. Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index d232025..b199e09 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -115,27 +115,26 @@ static void ddebug_change(const struct ddebug_query *query, list_for_each_entry(dt, &ddebug_tables, link) { /* match against the module name */ - if (query->module != NULL && - strcmp(query->module, dt->mod_name)) + if (query->module && strcmp(query->module, dt->mod_name)) continue; for (i = 0 ; i < dt->num_ddebugs ; i++) { struct _ddebug *dp = &dt->ddebugs[i]; /* match against the source filename */ - if (query->filename != NULL && + if (query->filename && strcmp(query->filename, dp->filename) && strcmp(query->filename, basename(dp->filename))) continue; /* match against the function */ - if (query->function != NULL && + if (query->function && strcmp(query->function, dp->function)) continue; /* match against the format */ - if (query->format != NULL && - strstr(dp->format, query->format) == NULL) + if (query->format && + !strstr(dp->format, query->format)) continue; /* match against the line number range */ -- cgit v0.10.2 From 5ca7d2a6c5e4f24dfe39e8383c6d32e61d95d16a Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:12:44 -0500 Subject: dynamic_debug: describe_flags with '=[pmflt_]*' Change describe_flags() to emit '=[pmflt_]+' for current callsite flags, or just '=_' when they're disabled. Having '=' in output allows a more selective grep expression; in contrast '-' may appear in filenames, line-ranges, and format-strings. '=' also has better mnemonics, saying; "the current setting is equal to ". This allows grep "=_" /dynamic_debug/control to see disabled callsites while avoiding the many occurrences of " = " seen in format strings. Enlarge flagsbufs to handle additional flag char, and alter ddebug_parse_flags() to allow flags=0, so that user can turn off all debug flags via: ~# echo =_ > /dynamic_debug/control Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 29ea09a..fc39640 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -21,7 +21,8 @@ struct _ddebug { * The bits here are changed dynamically when the user * writes commands to /dynamic_debug/control */ -#define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */ +#define _DPRINTK_FLAGS_NONE 0 +#define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */ #define _DPRINTK_FLAGS_INCL_MODNAME (1<<1) #define _DPRINTK_FLAGS_INCL_FUNCNAME (1<<2) #define _DPRINTK_FLAGS_INCL_LINENO (1<<3) diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index b199e09..cde4dfe 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -75,6 +75,7 @@ static struct { unsigned flag:8; char opt_char; } opt_array[] = { { _DPRINTK_FLAGS_INCL_FUNCNAME, 'f' }, { _DPRINTK_FLAGS_INCL_LINENO, 'l' }, { _DPRINTK_FLAGS_INCL_TID, 't' }, + { _DPRINTK_FLAGS_NONE, '_' }, }; /* format a string into buf[] which describes the _ddebug's flags */ @@ -84,12 +85,12 @@ static char *ddebug_describe_flags(struct _ddebug *dp, char *buf, char *p = buf; int i; - BUG_ON(maxlen < 4); + BUG_ON(maxlen < 6); for (i = 0; i < ARRAY_SIZE(opt_array); ++i) if (dp->flags & opt_array[i].flag) *p++ = opt_array[i].opt_char; if (p == buf) - *p++ = '-'; + *p++ = '_'; *p = '\0'; return buf; @@ -108,7 +109,7 @@ static void ddebug_change(const struct ddebug_query *query, struct ddebug_table *dt; unsigned int newflags; unsigned int nfound = 0; - char flagbuf[8]; + char flagbuf[10]; /* search for matching ddebugs */ mutex_lock(&ddebug_lock); @@ -152,7 +153,7 @@ static void ddebug_change(const struct ddebug_query *query, continue; dp->flags = newflags; if (verbose) - pr_info("changed %s:%d [%s]%s %s\n", + pr_info("changed %s:%d [%s]%s =%s\n", dp->filename, dp->lineno, dt->mod_name, dp->function, ddebug_describe_flags(dp, flagbuf, @@ -370,8 +371,6 @@ static int ddebug_parse_flags(const char *str, unsigned int *flagsp, if (i < 0) return -EINVAL; } - if (flags == 0) - return -EINVAL; if (verbose) pr_info("flags=0x%x\n", flags); @@ -666,7 +665,7 @@ static int ddebug_proc_show(struct seq_file *m, void *p) { struct ddebug_iter *iter = m->private; struct _ddebug *dp = p; - char flagsbuf[8]; + char flagsbuf[10]; if (verbose) pr_info("called m=%p p=%p\n", m, p); @@ -677,10 +676,10 @@ static int ddebug_proc_show(struct seq_file *m, void *p) return 0; } - seq_printf(m, "%s:%u [%s]%s %s \"", - dp->filename, dp->lineno, - iter->table->mod_name, dp->function, - ddebug_describe_flags(dp, flagsbuf, sizeof(flagsbuf))); + seq_printf(m, "%s:%u [%s]%s =%s \"", + dp->filename, dp->lineno, + iter->table->mod_name, dp->function, + ddebug_describe_flags(dp, flagsbuf, sizeof(flagsbuf))); seq_escape(m, dp->format, "\t\r\n\""); seq_puts(m, "\"\n"); -- cgit v0.10.2 From 820874c75ea0d3a9c22d69d6eaad42a279d6756c Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:12:49 -0500 Subject: dynamic_debug: tighten up error checking on debug queries Issue error when a match-spec is given multiple times in a rule. Previous code kept last one, but was silent about it. Docs imply only one is allowed by saying match-specs are ANDed together, given that module M cannot match both A and B. Also error when last_line < 1st_line. Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index cde4dfe..5a7bacc 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -276,6 +276,19 @@ static char *unescape(char *str) return str; } +static int check_set(const char **dest, char *src, char *name) +{ + int rc = 0; + + if (*dest) { + rc = -EINVAL; + pr_err("match-spec:%s val:%s overridden by %s", + name, *dest, src); + } + *dest = src; + return rc; +} + /* * Parse words[] as a ddebug query specification, which is a series * of (keyword, value) pairs chosen from these possibilities: @@ -287,11 +300,15 @@ static char *unescape(char *str) * format * line * line - // where either may be empty + * + * Only 1 of each type is allowed. + * Returns 0 on success, <0 on error. */ static int ddebug_parse_query(char *words[], int nwords, struct ddebug_query *query) { unsigned int i; + int rc; /* check we have an even number of words */ if (nwords % 2 != 0) @@ -300,24 +317,32 @@ static int ddebug_parse_query(char *words[], int nwords, for (i = 0 ; i < nwords ; i += 2) { if (!strcmp(words[i], "func")) - query->function = words[i+1]; + rc = check_set(&query->function, words[i+1], "func"); else if (!strcmp(words[i], "file")) - query->filename = words[i+1]; + rc = check_set(&query->filename, words[i+1], "file"); else if (!strcmp(words[i], "module")) - query->module = words[i+1]; + rc = check_set(&query->module, words[i+1], "module"); else if (!strcmp(words[i], "format")) - query->format = unescape(words[i+1]); + rc = check_set(&query->format, unescape(words[i+1]), + "format"); else if (!strcmp(words[i], "line")) { char *first = words[i+1]; char *last = strchr(first, '-'); + if (query->first_lineno || query->last_lineno) { + pr_err("match-spec:line given 2 times\n"); + return -EINVAL; + } if (last) *last++ = '\0'; if (parse_lineno(first, &query->first_lineno) < 0) return -EINVAL; - if (last != NULL) { + if (last) { /* range - */ - if (parse_lineno(last, &query->last_lineno) < 0) + if (parse_lineno(last, &query->last_lineno) + < query->first_lineno) { + pr_err("last-line < 1st-line\n"); return -EINVAL; + } } else { query->last_lineno = query->first_lineno; } @@ -325,6 +350,8 @@ static int ddebug_parse_query(char *words[], int nwords, pr_err("unknown keyword \"%s\"\n", words[i]); return -EINVAL; } + if (rc) + return rc; } if (verbose) -- cgit v0.10.2 From b5b78f83854af15e04c63fdbc6efed9355afbe8f Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:12:54 -0500 Subject: dynamic_debug: early return if _ddebug table is empty If _ddebug table is empty (in a CONFIG_DYNAMIC_DEBUG build this shouldn't happen), then warn (error?) and return early. This skips empty table scan and parsing of setup-string, including the pr_info call noting the parse. By inspection, copy return-code handling from 1st ddebug_add_module() callsite to 2nd. Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 5a7bacc..4be55d8 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -871,23 +871,28 @@ static int __init dynamic_debug_init(void) int ret = 0; int n = 0; - if (__start___verbose != __stop___verbose) { - iter = __start___verbose; - modname = iter->modname; - iter_start = iter; - for (; iter < __stop___verbose; iter++) { - if (strcmp(modname, iter->modname)) { - ret = ddebug_add_module(iter_start, n, modname); - if (ret) - goto out_free; - n = 0; - modname = iter->modname; - iter_start = iter; - } - n++; + if (__start___verbose == __stop___verbose) { + pr_warn("_ddebug table is empty in a " + "CONFIG_DYNAMIC_DEBUG build"); + return 1; + } + iter = __start___verbose; + modname = iter->modname; + iter_start = iter; + for (; iter < __stop___verbose; iter++) { + if (strcmp(modname, iter->modname)) { + ret = ddebug_add_module(iter_start, n, modname); + if (ret) + goto out_free; + n = 0; + modname = iter->modname; + iter_start = iter; } - ret = ddebug_add_module(iter_start, n, modname); + n++; } + ret = ddebug_add_module(iter_start, n, modname); + if (ret) + goto out_free; /* ddebug_query boot param got passed -> set it up */ if (ddebug_setup_string[0] != '\0') { -- cgit v0.10.2 From e703ddae383abb24b1c7f363cb0df7e78a44ea45 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:12:59 -0500 Subject: dynamic_debug: reduce lineno field to a saner 18 bits lineno:24 allows files with 4 million lines, an insane file-size, even for never-to-get-in-tree machine generated code. Reduce this to 18 bits, which still allows 256k lines. This is still insanely big, but its not raving mad. Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index fc39640..7e3c53a 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -15,7 +15,7 @@ struct _ddebug { const char *function; const char *filename; const char *format; - unsigned int lineno:24; + unsigned int lineno:18; /* * The flags field controls the behaviour at the callsite. * The bits here are changed dynamically when the user -- cgit v0.10.2 From 8bd6026e88cb2eb1e60ee40c7a1a0786b2db6623 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:13:03 -0500 Subject: dynamic_debug: chop off comments in ddebug_tokenize If a token begins with #, the remainder of query string is a comment, so drop it. Doing it here avoids '#' in quoted strings. Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 4be55d8..86a9abb 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -183,6 +183,8 @@ static int ddebug_tokenize(char *buf, char *words[], int maxwords) buf = skip_spaces(buf); if (!*buf) break; /* oh, it was trailing whitespace */ + if (*buf == '#') + break; /* token starts comment, skip rest of line */ /* find `end' of word, whitespace separated or quoted */ if (*buf == '"' || *buf == '\'') { -- cgit v0.10.2 From 7281491c594e7b8501eb5dfcf6cd3724f8a1b5b0 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:13:07 -0500 Subject: dynamic_debug: enlarge command/query write buffer Current query write buffer is 256 bytes, on stack. In comparison, the ddebug_query boot-arg is 1024. Allocate the buffer off heap, and enlarge it to 4096 bytes, big enough for ~100 queries (at 40 bytes each), and error out if not. This makes it play nicely with large query sets (to be added later). The buffer should be enough for most uses, and others should probably be split into subsets. [jbaron@redhat.com: changed USER_BUF_PAGE from 4095 -> 4096 ] Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 86a9abb..d8773dc 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -570,24 +570,32 @@ __setup("ddebug_query=", ddebug_setup_query); * File_ops->write method for /dynamic_debug/conrol. Gathers the * command text from userspace, parses and executes it. */ +#define USER_BUF_PAGE 4096 static ssize_t ddebug_proc_write(struct file *file, const char __user *ubuf, size_t len, loff_t *offp) { - char tmpbuf[256]; + char *tmpbuf; int ret; if (len == 0) return 0; - /* we don't check *offp -- multiple writes() are allowed */ - if (len > sizeof(tmpbuf)-1) + if (len > USER_BUF_PAGE - 1) { + pr_warn("expected <%d bytes into control\n", USER_BUF_PAGE); return -E2BIG; - if (copy_from_user(tmpbuf, ubuf, len)) + } + tmpbuf = kmalloc(len + 1, GFP_KERNEL); + if (!tmpbuf) + return -ENOMEM; + if (copy_from_user(tmpbuf, ubuf, len)) { + kfree(tmpbuf); return -EFAULT; + } tmpbuf[len] = '\0'; if (verbose) pr_info("read %d bytes from userspace\n", (int)len); ret = ddebug_exec_query(tmpbuf); + kfree(tmpbuf); if (ret) return ret; -- cgit v0.10.2 From 2b6783191da7211c88f98eb1a2bd2027bff36e30 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:13:12 -0500 Subject: dynamic_debug: add trim_prefix() to provide source-root relative paths trim_prefix(path) skips past the absolute source path root, and returns the pointer to the relative path from there. It is used to shorten the displayed path in $DBGMT/dynamic_debug/control via ddebug_proc_show(), and in ddebug_change() to allow relative filenames to be used in applied queries. For example: ~# echo file kernel/freezer.c +p > $DBGMT/dynamic_debug/control kernel/freezer.c:128 [freezer]cancel_freezing p " clean up: %s\012" trim_prefix(path) insures common prefix before trimming it, so out-of-tree module paths are shown as full absolute paths. Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/Documentation/dynamic-debug-howto.txt b/Documentation/dynamic-debug-howto.txt index f959909..378b5d1 100644 --- a/Documentation/dynamic-debug-howto.txt +++ b/Documentation/dynamic-debug-howto.txt @@ -144,11 +144,12 @@ func func svc_tcp_accept file - The given string is compared against either the full - pathname or the basename of the source file of each - callsite. Examples: + The given string is compared against either the full pathname, the + src-root relative pathname, or the basename of the source file of + each callsite. Examples: file svcsock.c + file kernel/freezer.c file /usr/src/packages/BUILD/sgi-enhancednfs-1.4/default/net/sunrpc/svcsock.c module diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index d8773dc..a5508a1 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -69,6 +69,17 @@ static inline const char *basename(const char *path) return tail ? tail+1 : path; } +/* Return the path relative to source root */ +static inline const char *trim_prefix(const char *path) +{ + int skip = strlen(__FILE__) - strlen("lib/dynamic_debug.c"); + + if (strncmp(path, __FILE__, skip)) + skip = 0; /* prefix mismatch, don't skip */ + + return path + skip; +} + static struct { unsigned flag:8; char opt_char; } opt_array[] = { { _DPRINTK_FLAGS_PRINT, 'p' }, { _DPRINTK_FLAGS_INCL_MODNAME, 'm' }, @@ -125,7 +136,8 @@ static void ddebug_change(const struct ddebug_query *query, /* match against the source filename */ if (query->filename && strcmp(query->filename, dp->filename) && - strcmp(query->filename, basename(dp->filename))) + strcmp(query->filename, basename(dp->filename)) && + strcmp(query->filename, trim_prefix(dp->filename))) continue; /* match against the function */ @@ -154,7 +166,7 @@ static void ddebug_change(const struct ddebug_query *query, dp->flags = newflags; if (verbose) pr_info("changed %s:%d [%s]%s =%s\n", - dp->filename, dp->lineno, + trim_prefix(dp->filename), dp->lineno, dt->mod_name, dp->function, ddebug_describe_flags(dp, flagbuf, sizeof(flagbuf))); @@ -714,7 +726,7 @@ static int ddebug_proc_show(struct seq_file *m, void *p) } seq_printf(m, "%s:%u [%s]%s =%s \"", - dp->filename, dp->lineno, + trim_prefix(dp->filename), dp->lineno, iter->table->mod_name, dp->function, ddebug_describe_flags(dp, flagsbuf, sizeof(flagsbuf))); seq_escape(m, dp->format, "\t\r\n\""); -- cgit v0.10.2 From 574b3725e327531c70361d1a10b8dc8dd2b93590 Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:13:16 -0500 Subject: dynamic_debug: factor vpr_info_dq out of ddebug_parse_query Factor pr_info(query) out of ddebug_parse_query, into vpr_info_dq(), for reuse later. Also change the printed labels: file, func to agree with the query-spec keywords accepted in the control file. Pass "" when string is null, to avoid "(null)" output from sprintf. For format print, use precision to skip last char, assuming its '\n', no great harm if not, its a debug msg. Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index a5508a1..93fc5d5 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -107,6 +107,22 @@ static char *ddebug_describe_flags(struct _ddebug *dp, char *buf, return buf; } +#define vpr_info_dq(q, msg) \ +do { \ + if (verbose) \ + /* trim last char off format print */ \ + pr_info("%s: func=\"%s\" file=\"%s\" " \ + "module=\"%s\" format=\"%.*s\" " \ + "lineno=%u-%u", \ + msg, \ + q->function ? q->function : "", \ + q->filename ? q->filename : "", \ + q->module ? q->module : "", \ + (int)(q->format ? strlen(q->format) - 1 : 0), \ + q->format ? q->format : "", \ + q->first_lineno, q->last_lineno); \ +} while (0) + /* * Search the tables for _ddebug's which match the given * `query' and apply the `flags' and `mask' to them. Tells @@ -367,14 +383,7 @@ static int ddebug_parse_query(char *words[], int nwords, if (rc) return rc; } - - if (verbose) - pr_info("q->function=\"%s\" q->filename=\"%s\" " - "q->module=\"%s\" q->format=\"%s\" q->lineno=%u-%u\n", - query->function, query->filename, - query->module, query->format, query->first_lineno, - query->last_lineno); - + vpr_info_dq(query, "parsed"); return 0; } -- cgit v0.10.2 From 85f7f6c0edb8414053d788229c97d5ecff21efab Mon Sep 17 00:00:00 2001 From: Jim Cromie Date: Mon, 19 Dec 2011 17:13:21 -0500 Subject: dynamic_debug: process multiple debug-queries on a line Insert ddebug_exec_queries() in place of ddebug_exec_query(). It splits the query string on [;\n], and calls ddebug_exec_query() on each. All queries are processed independent of errors, allowing a query to fail, for example when a module is not installed. Empty lines and comments are skipped. Errors are counted, and the last error seen (negative) or the number of callsites found (0 or positive) is returned. Return code checks are altered accordingly. With this, multiple queries can be given in ddebug_query, allowing more selective enabling of callsites. As a side effect, a set of commands can be batched in: cat cmd-file > $DBGMT/dynamic_debug/control We dont want a ddebug_query syntax error to kill the dynamic debug facility, so dynamic_debug_init() zeros ddebug_exec_queries()'s return code after logging the appropriate message, so that ddebug tables are preserved and $DBGMT/dynamic_debug/control file is created. This would be appropriate even without accepting multiple queries. This patch also alters ddebug_change() to return number of callsites matched (which typically is the same as number of callsites changed). ddebug_exec_query() also returns the number found, or a negative value if theres a parse error on the query. Splitting on [;\n] prevents their use in format-specs, but selecting callsites on punctuation is brittle anyway, meaningful and selective substrings are more typical. Note: splitting queries on ';' before handling trailing #comments means that a ';' also terminates a comment, and text after the ';' is treated as another query. This trailing query will almost certainly result in a parse error and thus have no effect other than the error message. The double corner case with unexpected results is: ddebug_query="func foo +p # enable foo ; +p" Signed-off-by: Jim Cromie Signed-off-by: Jason Baron Signed-off-by: Greg Kroah-Hartman diff --git a/Documentation/dynamic-debug-howto.txt b/Documentation/dynamic-debug-howto.txt index 378b5d1..74e6c77 100644 --- a/Documentation/dynamic-debug-howto.txt +++ b/Documentation/dynamic-debug-howto.txt @@ -12,7 +12,7 @@ dynamically enabled per-callsite. Dynamic debug has even more useful features: * Simple query language allows turning on and off debugging statements by - matching any combination of: + matching any combination of 0 or 1 of: - source filename - function name @@ -79,31 +79,24 @@ Command Language Reference ========================== At the lexical level, a command comprises a sequence of words separated -by whitespace characters. Note that newlines are treated as word -separators and do *not* end a command or allow multiple commands to -be done together. So these are all equivalent: +by spaces or tabs. So these are all equivalent: nullarbor:~ # echo -c 'file svcsock.c line 1603 +p' > /dynamic_debug/control nullarbor:~ # echo -c ' file svcsock.c line 1603 +p ' > /dynamic_debug/control -nullarbor:~ # echo -c 'file svcsock.c\nline 1603 +p' > - /dynamic_debug/control nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' > /dynamic_debug/control -Commands are bounded by a write() system call. If you want to do -multiple commands you need to do a separate "echo" for each, like: +Command submissions are bounded by a write() system call. +Multiple commands can be written together, separated by ';' or '\n'. -nullarbor:~ # echo 'file svcsock.c line 1603 +p' > /proc/dprintk ;\ -> echo 'file svcsock.c line 1563 +p' > /proc/dprintk + ~# echo "func pnpacpi_get_resources +p; func pnp_assign_mem +p" \ + > /dynamic_debug/control -or even like: +If your query set is big, you can batch them too: -nullarbor:~ # ( -> echo 'file svcsock.c line 1603 +p' ;\ -> echo 'file svcsock.c line 1563 +p' ;\ -> ) > /proc/dprintk + ~# cat query-batch-file > /dynamic_debug/control At the syntactical level, a command comprises a sequence of match specifications, followed by a flags change specification. diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 93fc5d5..310c753 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -124,13 +124,13 @@ do { \ } while (0) /* - * Search the tables for _ddebug's which match the given - * `query' and apply the `flags' and `mask' to them. Tells - * the user which ddebug's were changed, or whether none - * were matched. + * Search the tables for _ddebug's which match the given `query' and + * apply the `flags' and `mask' to them. Returns number of matching + * callsites, normally the same as number of changes. If verbose, + * logs the changes. Takes ddebug_lock. */ -static void ddebug_change(const struct ddebug_query *query, - unsigned int flags, unsigned int mask) +static int ddebug_change(const struct ddebug_query *query, + unsigned int flags, unsigned int mask) { int i; struct ddebug_table *dt; @@ -192,6 +192,8 @@ static void ddebug_change(const struct ddebug_query *query, if (!nfound && verbose) pr_info("no matches for query\n"); + + return nfound; } /* @@ -449,7 +451,7 @@ static int ddebug_exec_query(char *query_string) unsigned int flags = 0, mask = 0; struct ddebug_query query; #define MAXWORDS 9 - int nwords; + int nwords, nfound; char *words[MAXWORDS]; nwords = ddebug_tokenize(query_string, words, MAXWORDS); @@ -461,8 +463,47 @@ static int ddebug_exec_query(char *query_string) return -EINVAL; /* actually go and implement the change */ - ddebug_change(&query, flags, mask); - return 0; + nfound = ddebug_change(&query, flags, mask); + vpr_info_dq((&query), (nfound) ? "applied" : "no-match"); + + return nfound; +} + +/* handle multiple queries in query string, continue on error, return + last error or number of matching callsites. Module name is either + in param (for boot arg) or perhaps in query string. +*/ +static int ddebug_exec_queries(char *query) +{ + char *split; + int i, errs = 0, exitcode = 0, rc, nfound = 0; + + for (i = 0; query; query = split) { + split = strpbrk(query, ";\n"); + if (split) + *split++ = '\0'; + + query = skip_spaces(query); + if (!query || !*query || *query == '#') + continue; + + if (verbose) + pr_info("query %d: \"%s\"\n", i, query); + + rc = ddebug_exec_query(query); + if (rc < 0) { + errs++; + exitcode = rc; + } else + nfound += rc; + i++; + } + pr_info("processed %d queries, with %d matches, %d errs\n", + i, nfound, errs); + + if (exitcode) + return exitcode; + return nfound; } #define PREFIX_SIZE 64 @@ -615,9 +656,9 @@ static ssize_t ddebug_proc_write(struct file *file, const char __user *ubuf, if (verbose) pr_info("read %d bytes from userspace\n", (int)len); - ret = ddebug_exec_query(tmpbuf); + ret = ddebug_exec_queries(tmpbuf); kfree(tmpbuf); - if (ret) + if (ret < 0) return ret; *offp += len; @@ -927,13 +968,15 @@ static int __init dynamic_debug_init(void) /* ddebug_query boot param got passed -> set it up */ if (ddebug_setup_string[0] != '\0') { - ret = ddebug_exec_query(ddebug_setup_string); - if (ret) + ret = ddebug_exec_queries(ddebug_setup_string); + if (ret < 0) pr_warn("Invalid ddebug boot param %s", ddebug_setup_string); else - pr_info("ddebug initialized with string %s", - ddebug_setup_string); + pr_info("%d changes by ddebug_query\n", ret); + + /* keep tables even on ddebug_query parse error */ + ret = 0; } out_free: -- cgit v0.10.2 From 2897a563a55442379e5e59ec68c229a7f27fb7c6 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sun, 8 Jan 2012 10:12:18 -0800 Subject: drivers: hv: Get rid of some unnecessary code The current code unnecessarily limits the number of offers we handle. Get rid of this limitation. As part of this cleanup, also get rid of an unused define - MAX_MSG_TYPES. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 36484db..9ffbfc5 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -37,81 +37,6 @@ struct vmbus_channel_message_table_entry { void (*message_handler)(struct vmbus_channel_message_header *msg); }; -#define MAX_MSG_TYPES 4 -#define MAX_NUM_DEVICE_CLASSES_SUPPORTED 8 - -static const uuid_le - supported_device_classes[MAX_NUM_DEVICE_CLASSES_SUPPORTED] = { - /* {ba6163d9-04a1-4d29-b605-72e2ffb1dc7f} */ - /* Storage - SCSI */ - { - .b = { - 0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, - 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f - } - }, - - /* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */ - /* Network */ - { - .b = { - 0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46, - 0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E - } - }, - - /* {CFA8B69E-5B4A-4cc0-B98B-8BA1A1F3F95A} */ - /* Input */ - { - .b = { - 0x9E, 0xB6, 0xA8, 0xCF, 0x4A, 0x5B, 0xc0, 0x4c, - 0xB9, 0x8B, 0x8B, 0xA1, 0xA1, 0xF3, 0xF9, 0x5A - } - }, - - /* {32412632-86cb-44a2-9b5c-50d1417354f5} */ - /* IDE */ - { - .b = { - 0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, - 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5 - } - }, - /* 0E0B6031-5213-4934-818B-38D90CED39DB */ - /* Shutdown */ - { - .b = { - 0x31, 0x60, 0x0B, 0X0E, 0x13, 0x52, 0x34, 0x49, - 0x81, 0x8B, 0x38, 0XD9, 0x0C, 0xED, 0x39, 0xDB - } - }, - /* {9527E630-D0AE-497b-ADCE-E80AB0175CAF} */ - /* TimeSync */ - { - .b = { - 0x30, 0xe6, 0x27, 0x95, 0xae, 0xd0, 0x7b, 0x49, - 0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf - } - }, - /* {57164f39-9115-4e78-ab55-382f3bd5422d} */ - /* Heartbeat */ - { - .b = { - 0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e, - 0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d - } - }, - /* {A9A0F4E7-5A45-4d96-B827-8A841E8C03E6} */ - /* KVP */ - { - .b = { - 0xe7, 0xf4, 0xa0, 0xa9, 0x45, 0x5a, 0x96, 0x4d, - 0xb8, 0x27, 0x8a, 0x84, 0x1e, 0x8c, 0x3, 0xe6 - } - }, - -}; - /** * vmbus_prep_negotiate_resp() - Create default response for Hyper-V Negotiate message @@ -321,20 +246,8 @@ static void vmbus_onoffer(struct vmbus_channel_message_header *hdr) struct vmbus_channel *newchannel; uuid_le *guidtype; uuid_le *guidinstance; - int i; - int fsupported = 0; offer = (struct vmbus_channel_offer_channel *)hdr; - for (i = 0; i < MAX_NUM_DEVICE_CLASSES_SUPPORTED; i++) { - if (!uuid_le_cmp(offer->offer.if_type, - supported_device_classes[i])) { - fsupported = 1; - break; - } - } - - if (!fsupported) - return; guidtype = &offer->offer.if_type; guidinstance = &offer->offer.if_instance; -- cgit v0.10.2 From c56d8a7362665d165ba992b6b7a8d6c13a26eafc Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Tue, 17 Jan 2012 12:17:22 +0000 Subject: sysfs: change permissions for /sys from 0755 to 0555 There is a misleading difference between /proc and /sys permissions, /proc is 0555 and /sys is 0755. But as it is impossible to create or unlink something in /sys it would be nice to have same permissions. Signed-off-by: Vitaly Kuznetsov Signed-off-by: Greg Kroah-Hartman diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index e34f0d9..140f26a 100644 --- a/fs/sysfs/mount.c +++ b/fs/sysfs/mount.c @@ -36,7 +36,7 @@ struct sysfs_dirent sysfs_root = { .s_name = "", .s_count = ATOMIC_INIT(1), .s_flags = SYSFS_DIR | (KOBJ_NS_TYPE_NONE << SYSFS_NS_TYPE_SHIFT), - .s_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO, + .s_mode = S_IFDIR | S_IRUGO | S_IXUGO, .s_ino = 1, }; -- cgit v0.10.2 From 2b31594a9523449b168946725689d039c80204de Mon Sep 17 00:00:00 2001 From: Jonghwan Choi Date: Sat, 14 Jan 2012 11:06:03 +0900 Subject: driver-core: Fix possible null reference in subsys_interface_unregister Check if the sif is not NULL before de-referencing it Signed-off-by: Jonghwan Choi Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 99dc592..4ddb38b 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -1193,13 +1193,15 @@ EXPORT_SYMBOL_GPL(subsys_interface_register); void subsys_interface_unregister(struct subsys_interface *sif) { - struct bus_type *subsys = sif->subsys; + struct bus_type *subsys; struct subsys_dev_iter iter; struct device *dev; - if (!sif) + if (!sif || !sif->subsys) return; + subsys = sif->subsys; + mutex_lock(&subsys->p->mutex); list_del_init(&sif->node); if (sif->remove_dev) { -- cgit v0.10.2 From fde25a9b63b9a3dc91365c394a426ebe64cfc2da Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Jan 2012 13:34:24 -0500 Subject: Driver core: driver_find() drops reference before returning As part of the removal of get_driver()/put_driver(), this patch (as1510) changes driver_find(); it now drops the reference it acquires before returning. The patch also adjusts all the callers of driver_find() to remove the now unnecessary calls to put_driver(). In addition, the patch adds a warning to driver_find(): Callers must make sure the driver they are searching for does not get unloaded while they are using it. This has always been the case; driver_find() has never prevented a driver from being unregistered or unloaded. Hence the patch will not introduce any new bugs. The existing callers all seem to be okay in this respect, however I don't understand the video drivers well enough to be certain about them. Signed-off-by: Alan Stern CC: Dmitry Torokhov CC: Kyungmin Park CC: Andy Walls CC: Martin Schwidefsky Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/base/driver.c b/drivers/base/driver.c index b631f7c..e979cad 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -234,7 +234,6 @@ int driver_register(struct device_driver *drv) other = driver_find(drv->name, drv->bus); if (other) { - put_driver(other); printk(KERN_ERR "Error: Driver '%s' is already registered, " "aborting...\n", drv->name); return -EBUSY; @@ -275,7 +274,9 @@ EXPORT_SYMBOL_GPL(driver_unregister); * Call kset_find_obj() to iterate over list of drivers on * a bus to find driver by name. Return driver if found. * - * Note that kset_find_obj increments driver's reference count. + * This routine provides no locking to prevent the driver it returns + * from being unregistered or unloaded while the caller is using it. + * The caller is responsible for preventing this. */ struct device_driver *driver_find(const char *name, struct bus_type *bus) { @@ -283,6 +284,8 @@ struct device_driver *driver_find(const char *name, struct bus_type *bus) struct driver_private *priv; if (k) { + /* Drop reference added by kset_find_obj() */ + kobject_put(k); priv = to_driver(k); return priv->driver; } diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c index c351aa4..da739d9 100644 --- a/drivers/input/gameport/gameport.c +++ b/drivers/input/gameport/gameport.c @@ -449,7 +449,6 @@ static ssize_t gameport_rebind_driver(struct device *dev, struct device_attribut } else if ((drv = driver_find(buf, &gameport_bus)) != NULL) { gameport_disconnect_port(gameport); error = gameport_bind_driver(gameport, to_gameport_driver(drv)); - put_driver(drv); } else { error = -EINVAL; } diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index ba70058..d0f7533 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -441,7 +441,6 @@ static ssize_t serio_rebind_driver(struct device *dev, struct device_attribute * } else if ((drv = driver_find(buf, &serio_bus)) != NULL) { serio_disconnect_port(serio); error = serio_bind_driver(serio, to_serio_driver(drv)); - put_driver(drv); serio_remove_duplicate_events(serio, SERIO_RESCAN_PORT); } else { error = -EINVAL; diff --git a/drivers/media/video/cx18/cx18-alsa-main.c b/drivers/media/video/cx18/cx18-alsa-main.c index a1e6c2a..e118361 100644 --- a/drivers/media/video/cx18/cx18-alsa-main.c +++ b/drivers/media/video/cx18/cx18-alsa-main.c @@ -285,7 +285,6 @@ static void __exit cx18_alsa_exit(void) drv = driver_find("cx18", &pci_bus_type); ret = driver_for_each_device(drv, NULL, NULL, cx18_alsa_exit_callback); - put_driver(drv); cx18_ext_init = NULL; printk(KERN_INFO "cx18-alsa: module unload complete\n"); diff --git a/drivers/media/video/ivtv/ivtvfb.c b/drivers/media/video/ivtv/ivtvfb.c index d0fbfcf..e5e7fa9 100644 --- a/drivers/media/video/ivtv/ivtvfb.c +++ b/drivers/media/video/ivtv/ivtvfb.c @@ -1293,7 +1293,6 @@ static int __init ivtvfb_init(void) drv = driver_find("ivtv", &pci_bus_type); err = driver_for_each_device(drv, NULL, ®istered, ivtvfb_callback_init); - put_driver(drv); if (!registered) { printk(KERN_ERR "ivtvfb: no cards found\n"); return -ENODEV; @@ -1310,7 +1309,6 @@ static void ivtvfb_cleanup(void) drv = driver_find("ivtv", &pci_bus_type); err = driver_for_each_device(drv, NULL, NULL, ivtvfb_callback_cleanup); - put_driver(drv); } module_init(ivtvfb_init); diff --git a/drivers/media/video/s5p-fimc/fimc-mdevice.c b/drivers/media/video/s5p-fimc/fimc-mdevice.c index 8ea4ee1..63eccb5 100644 --- a/drivers/media/video/s5p-fimc/fimc-mdevice.c +++ b/drivers/media/video/s5p-fimc/fimc-mdevice.c @@ -344,16 +344,13 @@ static int fimc_md_register_platform_entities(struct fimc_md *fmd) return -ENODEV; ret = driver_for_each_device(driver, NULL, fmd, fimc_register_callback); - put_driver(driver); if (ret) return ret; driver = driver_find(CSIS_DRIVER_NAME, &platform_bus_type); - if (driver) { + if (driver) ret = driver_for_each_device(driver, NULL, fmd, csis_register_callback); - put_driver(driver); - } return ret; } diff --git a/drivers/media/video/s5p-tv/mixer_video.c b/drivers/media/video/s5p-tv/mixer_video.c index 7884bae..f7ca5cc 100644 --- a/drivers/media/video/s5p-tv/mixer_video.c +++ b/drivers/media/video/s5p-tv/mixer_video.c @@ -58,7 +58,6 @@ static struct v4l2_subdev *find_and_register_subdev( } done: - put_driver(drv); return sd; } diff --git a/drivers/s390/net/smsgiucv_app.c b/drivers/s390/net/smsgiucv_app.c index 4d2ea40..32515a2 100644 --- a/drivers/s390/net/smsgiucv_app.c +++ b/drivers/s390/net/smsgiucv_app.c @@ -168,7 +168,7 @@ static int __init smsgiucv_app_init(void) rc = dev_set_name(smsg_app_dev, KMSG_COMPONENT); if (rc) { kfree(smsg_app_dev); - goto fail_put_driver; + goto fail; } smsg_app_dev->bus = &iucv_bus; smsg_app_dev->parent = iucv_root; @@ -177,7 +177,7 @@ static int __init smsgiucv_app_init(void) rc = device_register(smsg_app_dev); if (rc) { put_device(smsg_app_dev); - goto fail_put_driver; + goto fail; } /* convert sender to uppercase characters */ @@ -191,12 +191,11 @@ static int __init smsgiucv_app_init(void) rc = smsg_register_callback(SMSG_PREFIX, smsg_app_callback); if (rc) { device_unregister(smsg_app_dev); - goto fail_put_driver; + goto fail; } rc = 0; -fail_put_driver: - put_driver(smsgiucv_drv); +fail: return rc; } module_init(smsgiucv_app_init); -- cgit v0.10.2 From cef9bc56e1e944afd11f96de569657117a138c6d Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Jan 2012 13:34:41 -0500 Subject: Dynamic ID addition doesn't need get_driver() As part of the removal of get_driver()/put_driver(), this patch (as1511) changes all the places that add dynamic IDs for drivers. Since these additions are done by writing to the drivers' sysfs attribute files, and the attributes are removed when the drivers are unregistered, there is no reason to take an extra reference to the drivers. The one exception is the pci-stub driver, which calls pci_add_dynid() as part of its registration. But again, there's no reason to take an extra reference here, because the driver can't be unloaded while it is being registered. Signed-off-by: Alan Stern CC: Dmitry Torokhov CC: Jiri Kosina CC: Jesse Barnes CC: Dominik Brodowski Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index af08ce7..bce53fa 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1619,11 +1619,7 @@ static ssize_t store_new_id(struct device_driver *drv, const char *buf, list_add_tail(&dynid->list, &hdrv->dyn_list); spin_unlock(&hdrv->dyn_lock); - ret = 0; - if (get_driver(&hdrv->driver)) { - ret = driver_attach(&hdrv->driver); - put_driver(&hdrv->driver); - } + ret = driver_attach(&hdrv->driver); return ret ? : count; } diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 3623d65..ff54047 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -72,9 +72,7 @@ int pci_add_dynid(struct pci_driver *drv, list_add_tail(&dynid->node, &drv->dynids.list); spin_unlock(&drv->dynids.lock); - get_driver(&drv->driver); retval = driver_attach(&drv->driver); - put_driver(&drv->driver); return retval; } diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index 749c2a1..059699f 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -127,10 +127,7 @@ pcmcia_store_new_id(struct device_driver *driver, const char *buf, size_t count) list_add_tail(&dynid->node, &pdrv->dynids.list); mutex_unlock(&pdrv->dynids.lock); - if (get_driver(&pdrv->drv)) { - retval = driver_attach(&pdrv->drv); - put_driver(&pdrv->drv); - } + retval = driver_attach(&pdrv->drv); if (retval) return retval; diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index d40ff95..54c493b 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -71,10 +71,7 @@ ssize_t usb_store_new_id(struct usb_dynids *dynids, list_add_tail(&dynid->node, &dynids->list); spin_unlock(&dynids->lock); - if (get_driver(driver)) { - retval = driver_attach(driver); - put_driver(driver); - } + retval = driver_attach(driver); if (retval) return retval; -- cgit v0.10.2 From 9f30ea950edfaefa51221dd26a065b3442599778 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Tue, 24 Jan 2012 13:35:02 -0500 Subject: cio: remove {get,put}_driver Remove useless {get,put}_driver - the caller of the functions has to ensure valid driver pointers. Signed-off-by: Sebastian Ott Signed-off-by: Alan Stern CC: Martin Schwidefsky Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index 4f1989d..5f1dc6f 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -580,7 +580,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver) struct device *dev; /* We don't want ccwgroup devices to live longer than their driver. */ - get_driver(&cdriver->driver); while ((dev = driver_find_device(&cdriver->driver, NULL, NULL, __ccwgroup_match_all))) { struct ccwgroup_device *gdev = to_ccwgroupdev(dev); @@ -592,7 +591,6 @@ void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver) mutex_unlock(&gdev->reg_mutex); put_device(dev); } - put_driver(&cdriver->driver); driver_unregister(&cdriver->driver); } EXPORT_SYMBOL(ccwgroup_driver_unregister); diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 4726985..02d0152 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1676,15 +1676,9 @@ struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv, const char *bus_id) { struct device *dev; - struct device_driver *drv; - drv = get_driver(&cdrv->driver); - if (!drv) - return NULL; - - dev = driver_find_device(drv, NULL, (void *)bus_id, + dev = driver_find_device(&cdrv->driver, NULL, (void *)bus_id, __ccwdev_check_busid); - put_driver(drv); return dev ? to_ccwdev(dev) : NULL; } -- cgit v0.10.2 From f3ff9247088a0af0c192a28908dab76ff3d8871f Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Jan 2012 13:35:24 -0500 Subject: Remove useless get_driver()/put_driver() calls As part of the removal of get_driver()/put_driver(), this patch (as1512) gets rid of various useless and unnecessary calls in several drivers. In some cases it may be desirable to pin the driver by calling try_module_get(), but that can be done later. Signed-off-by: Alan Stern CC: "David S. Miller" CC: Konrad Rzeszutek Wilk CC: Michael Buesch CC: Joerg Roedel Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index f320f46..e8c42d6 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -915,9 +915,7 @@ static int phy_probe(struct device *dev) phydev = to_phy_device(dev); - /* Make sure the driver is held. - * XXX -- Is this correct? */ - drv = get_driver(phydev->dev.driver); + drv = phydev->dev.driver; phydrv = to_phy_driver(drv); phydev->drv = phydrv; @@ -957,8 +955,6 @@ static int phy_remove(struct device *dev) if (phydev->drv->remove) phydev->drv->remove(phydev); - - put_driver(dev->driver); phydev->drv = NULL; return 0; diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c index 7cf3d2f..6f81998 100644 --- a/drivers/pci/xen-pcifront.c +++ b/drivers/pci/xen-pcifront.c @@ -593,7 +593,7 @@ static pci_ers_result_t pcifront_common_process(int cmd, } pdrv = pcidev->driver; - if (get_driver(&pdrv->driver)) { + if (pdrv->driver) { if (pdrv->err_handler && pdrv->err_handler->error_detected) { dev_dbg(&pcidev->dev, "trying to call AER service\n"); @@ -623,7 +623,6 @@ static pci_ers_result_t pcifront_common_process(int cmd, } } } - put_driver(&pdrv->driver); } if (!flag) result = PCI_ERS_RESULT_NONE; diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index bb6317f..ff109ae 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -140,19 +140,6 @@ static void ssb_device_put(struct ssb_device *dev) put_device(dev->dev); } -static inline struct ssb_driver *ssb_driver_get(struct ssb_driver *drv) -{ - if (drv) - get_driver(&drv->drv); - return drv; -} - -static inline void ssb_driver_put(struct ssb_driver *drv) -{ - if (drv) - put_driver(&drv->drv); -} - static int ssb_device_resume(struct device *dev) { struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); @@ -250,11 +237,9 @@ int ssb_devices_freeze(struct ssb_bus *bus, struct ssb_freeze_context *ctx) ssb_device_put(sdev); continue; } - sdrv = ssb_driver_get(drv_to_ssb_drv(sdev->dev->driver)); - if (!sdrv || SSB_WARN_ON(!sdrv->remove)) { - ssb_device_put(sdev); + sdrv = drv_to_ssb_drv(sdev->dev->driver); + if (SSB_WARN_ON(!sdrv->remove)) continue; - } sdrv->remove(sdev); ctx->device_frozen[i] = 1; } @@ -293,7 +278,6 @@ int ssb_devices_thaw(struct ssb_freeze_context *ctx) dev_name(sdev->dev)); result = err; } - ssb_driver_put(sdrv); ssb_device_put(sdev); } diff --git a/lib/dma-debug.c b/lib/dma-debug.c index fea790a..13ef233 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -170,7 +170,7 @@ static bool driver_filter(struct device *dev) return false; /* driver filter on but not yet initialized */ - drv = get_driver(dev->driver); + drv = dev->driver; if (!drv) return false; @@ -185,7 +185,6 @@ static bool driver_filter(struct device *dev) } read_unlock_irqrestore(&driver_name_lock, flags); - put_driver(drv); return ret; } -- cgit v0.10.2 From 9875bb480cc89d9b690f7028aadf7e58454f0dae Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Jan 2012 13:35:37 -0500 Subject: Eliminate get_driver() and put_driver() Now that there are no users of get_driver() or put_driver(), this patch (as1513) removes those routines completely. Signed-off-by: Alan Stern CC: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/base/driver.c b/drivers/base/driver.c index e979cad..60e4f77 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -153,34 +153,6 @@ int driver_add_kobj(struct device_driver *drv, struct kobject *kobj, } EXPORT_SYMBOL_GPL(driver_add_kobj); -/** - * get_driver - increment driver reference count. - * @drv: driver. - */ -struct device_driver *get_driver(struct device_driver *drv) -{ - if (drv) { - struct driver_private *priv; - struct kobject *kobj; - - kobj = kobject_get(&drv->p->kobj); - priv = to_driver(kobj); - return priv->driver; - } - return NULL; -} -EXPORT_SYMBOL_GPL(get_driver); - -/** - * put_driver - decrement driver's refcount. - * @drv: driver. - */ -void put_driver(struct device_driver *drv) -{ - kobject_put(&drv->p->kobj); -} -EXPORT_SYMBOL_GPL(put_driver); - static int driver_add_groups(struct device_driver *drv, const struct attribute_group **groups) { diff --git a/include/linux/device.h b/include/linux/device.h index a782d7f..d28bd82 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -238,8 +238,6 @@ struct device_driver { extern int __must_check driver_register(struct device_driver *drv); extern void driver_unregister(struct device_driver *drv); -extern struct device_driver *get_driver(struct device_driver *drv); -extern void put_driver(struct device_driver *drv); extern struct device_driver *driver_find(const char *name, struct bus_type *bus); extern int driver_probe_done(void); -- cgit v0.10.2 From d6e486868cde585842d55ba3b6ec57af090fc343 Mon Sep 17 00:00:00 2001 From: Ludwig Nussel Date: Wed, 25 Jan 2012 11:52:28 +0100 Subject: debugfs: add mode, uid and gid options Cautious admins may want to restrict access to debugfs. Currently a manual chown/chmod e.g. in an init script is needed to achieve that. Distributions that want to make the mount options configurable need to add extra config files. By allowing to set the root inode's uid, gid and mode via mount options no such hacks are needed anymore. Instead configuration becomes straight forward via fstab. Signed-off-by: Ludwig Nussel Signed-off-by: Greg Kroah-Hartman diff --git a/Documentation/filesystems/debugfs.txt b/Documentation/filesystems/debugfs.txt index 6872c91..4e25758 100644 --- a/Documentation/filesystems/debugfs.txt +++ b/Documentation/filesystems/debugfs.txt @@ -14,7 +14,10 @@ Debugfs is typically mounted with a command like: mount -t debugfs none /sys/kernel/debug -(Or an equivalent /etc/fstab line). +(Or an equivalent /etc/fstab line). +The debugfs root directory is accessible by anyone by default. To +restrict access to the tree the "uid", "gid" and "mode" mount +options can be used. Note that the debugfs API is exported GPL-only to modules. diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 956d5dd..b80bc84 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -23,9 +23,13 @@ #include #include #include +#include +#include #include #include +#define DEBUGFS_DEFAULT_MODE 0755 + static struct vfsmount *debugfs_mount; static int debugfs_mount_count; static bool debugfs_registered; @@ -125,11 +129,154 @@ static inline int debugfs_positive(struct dentry *dentry) return dentry->d_inode && !d_unhashed(dentry); } +struct debugfs_mount_opts { + uid_t uid; + gid_t gid; + umode_t mode; +}; + +enum { + Opt_uid, + Opt_gid, + Opt_mode, + Opt_err +}; + +static const match_table_t tokens = { + {Opt_uid, "uid=%u"}, + {Opt_gid, "gid=%u"}, + {Opt_mode, "mode=%o"}, + {Opt_err, NULL} +}; + +struct debugfs_fs_info { + struct debugfs_mount_opts mount_opts; +}; + +static int debugfs_parse_options(char *data, struct debugfs_mount_opts *opts) +{ + substring_t args[MAX_OPT_ARGS]; + int option; + int token; + char *p; + + opts->mode = DEBUGFS_DEFAULT_MODE; + + while ((p = strsep(&data, ",")) != NULL) { + if (!*p) + continue; + + token = match_token(p, tokens, args); + switch (token) { + case Opt_uid: + if (match_int(&args[0], &option)) + return -EINVAL; + opts->uid = option; + break; + case Opt_gid: + if (match_octal(&args[0], &option)) + return -EINVAL; + opts->gid = option; + break; + case Opt_mode: + if (match_octal(&args[0], &option)) + return -EINVAL; + opts->mode = option & S_IALLUGO; + break; + /* + * We might like to report bad mount options here; + * but traditionally debugfs has ignored all mount options + */ + } + } + + return 0; +} + +static int debugfs_apply_options(struct super_block *sb) +{ + struct debugfs_fs_info *fsi = sb->s_fs_info; + struct inode *inode = sb->s_root->d_inode; + struct debugfs_mount_opts *opts = &fsi->mount_opts; + + inode->i_mode &= ~S_IALLUGO; + inode->i_mode |= opts->mode; + + inode->i_uid = opts->uid; + inode->i_gid = opts->gid; + + return 0; +} + +static int debugfs_remount(struct super_block *sb, int *flags, char *data) +{ + int err; + struct debugfs_fs_info *fsi = sb->s_fs_info; + + err = debugfs_parse_options(data, &fsi->mount_opts); + if (err) + goto fail; + + debugfs_apply_options(sb); + +fail: + return err; +} + +static int debugfs_show_options(struct seq_file *m, struct dentry *root) +{ + struct debugfs_fs_info *fsi = root->d_sb->s_fs_info; + struct debugfs_mount_opts *opts = &fsi->mount_opts; + + if (opts->uid != 0) + seq_printf(m, ",uid=%u", opts->uid); + if (opts->gid != 0) + seq_printf(m, ",gid=%u", opts->gid); + if (opts->mode != DEBUGFS_DEFAULT_MODE) + seq_printf(m, ",mode=%o", opts->mode); + + return 0; +} + +static const struct super_operations debugfs_super_operations = { + .statfs = simple_statfs, + .remount_fs = debugfs_remount, + .show_options = debugfs_show_options, +}; + static int debug_fill_super(struct super_block *sb, void *data, int silent) { static struct tree_descr debug_files[] = {{""}}; + struct debugfs_fs_info *fsi; + int err; + + save_mount_options(sb, data); + + fsi = kzalloc(sizeof(struct debugfs_fs_info), GFP_KERNEL); + sb->s_fs_info = fsi; + if (!fsi) { + err = -ENOMEM; + goto fail; + } + + err = debugfs_parse_options(data, &fsi->mount_opts); + if (err) + goto fail; + + err = simple_fill_super(sb, DEBUGFS_MAGIC, debug_files); + if (err) + goto fail; + + sb->s_op = &debugfs_super_operations; + + debugfs_apply_options(sb); + + return 0; - return simple_fill_super(sb, DEBUGFS_MAGIC, debug_files); +fail: + kfree(fsi); + sb->s_fs_info = NULL; + return err; } static struct dentry *debug_mount(struct file_system_type *fs_type, -- cgit v0.10.2 From 644e9cbbe3fc032cc92d0936057e166a994dc246 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 26 Jan 2012 00:09:05 +0100 Subject: Add driver auto probing for x86 features v4 There's a growing number of drivers that support a specific x86 feature or CPU. Currently loading these drivers currently on a generic distribution requires various driver specific hacks and it often doesn't work. This patch adds auto probing for drivers based on the x86 cpuid information, in particular based on vendor/family/model number and also based on CPUID feature bits. For example a common issue is not loading the SSE 4.2 accelerated CRC module: this can significantly lower the performance of BTRFS which relies on fast CRC. Another issue is loading the right CPUFREQ driver for the current CPU. Currently distributions often try all all possible driver until one sticks, which is not really a good way to do this. It works with existing udev without any changes. The code exports the x86 information as a generic string in sysfs that can be matched by udev's pattern matching. This scheme does not support numeric ranges, so if you want to handle e.g. ranges of model numbers they have to be encoded in ASCII or simply all models or families listed. Fixing that would require changing udev. Another issue is that udev will happily load all drivers that match, there is currently no nice way to stop a specific driver from being loaded if it's not needed (e.g. if you don't need fast CRC) But there are not that many cpu specific drivers around and they're all not that bloated, so this isn't a particularly serious issue. Originally this patch added the modalias to the normal cpu sysdevs. However sysdevs don't have all the infrastructure needed for udev, so it couldn't really autoload drivers. This patch instead adds the CPU modaliases to the cpuid devices, which are real devices with full support for udev. This implies that the cpuid driver has to be loaded to use this. This patch just adds infrastructure, some driver conversions in followups. Thanks to Kay for helping with some sysfs magic. v2: Constifcation, some updates v4: (trenn@suse.de): - Use kzalloc instead of kmalloc to terminate modalias buffer - Use uppercase hex values to match correctly against hex values containing letters Cc: Dave Jones Cc: Kay Sievers Cc: Jen Axboe Cc: Herbert Xu Cc: Huang Ying Cc: Len Brown Signed-off-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/arch/x86/include/asm/cpu_device_id.h b/arch/x86/include/asm/cpu_device_id.h new file mode 100644 index 0000000..ff501e5 --- /dev/null +++ b/arch/x86/include/asm/cpu_device_id.h @@ -0,0 +1,13 @@ +#ifndef _CPU_DEVICE_ID +#define _CPU_DEVICE_ID 1 + +/* + * Declare drivers belonging to specific x86 CPUs + * Similar in spirit to pci_device_id and related PCI functions + */ + +#include + +extern const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match); + +#endif diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile index 25f24dc..6ab6aa2 100644 --- a/arch/x86/kernel/cpu/Makefile +++ b/arch/x86/kernel/cpu/Makefile @@ -16,6 +16,7 @@ obj-y := intel_cacheinfo.o scattered.o topology.o obj-y += proc.o capflags.o powerflags.o common.o obj-y += vmware.o hypervisor.o sched.o mshyperv.o obj-y += rdrand.o +obj-y += match.o obj-$(CONFIG_X86_32) += bugs.o obj-$(CONFIG_X86_64) += bugs_64.o diff --git a/arch/x86/kernel/cpu/match.c b/arch/x86/kernel/cpu/match.c new file mode 100644 index 0000000..7acc961 --- /dev/null +++ b/arch/x86/kernel/cpu/match.c @@ -0,0 +1,48 @@ +#include +#include +#include +#include + +/** + * x86_match_cpu - match current CPU again an array of x86_cpu_ids + * @match: Pointer to array of x86_cpu_ids. Last entry terminated with + * {}. + * + * Return the entry if the current CPU matches the entries in the + * passed x86_cpu_id match table. Otherwise NULL. The match table + * contains vendor (X86_VENDOR_*), family, model and feature bits or + * respective wildcard entries. + * + * A typical table entry would be to match a specific CPU + * { X86_VENDOR_INTEL, 6, 0x12 } + * or to match a specific CPU feature + * { X86_FEATURE_MATCH(X86_FEATURE_FOOBAR) } + * + * Fields can be wildcarded with %X86_VENDOR_ANY, %X86_FAMILY_ANY, + * %X86_MODEL_ANY, %X86_FEATURE_ANY or 0 (except for vendor) + * + * Arrays used to match for this should also be declared using + * MODULE_DEVICE_TABLE(x86_cpu, ...) + * + * This always matches against the boot cpu, assuming models and features are + * consistent over all CPUs. + */ +const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match) +{ + const struct x86_cpu_id *m; + struct cpuinfo_x86 *c = &boot_cpu_data; + + for (m = match; m->vendor | m->family | m->model | m->feature; m++) { + if (m->vendor != X86_VENDOR_ANY && c->x86_vendor != m->vendor) + continue; + if (m->family != X86_FAMILY_ANY && c->x86 != m->family) + continue; + if (m->model != X86_MODEL_ANY && c->x86_model != m->model) + continue; + if (m->feature != X86_FEATURE_ANY && !cpu_has(c, m->feature)) + continue; + return m; + } + return NULL; +} +EXPORT_SYMBOL(x86_match_cpu); diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c index a524353..7c89880 100644 --- a/arch/x86/kernel/cpuid.c +++ b/arch/x86/kernel/cpuid.c @@ -40,6 +40,7 @@ #include #include #include +#include #include #include @@ -138,13 +139,57 @@ static const struct file_operations cpuid_fops = { .open = cpuid_open, }; +static ssize_t print_cpu_modalias(struct device *dev, + struct device_attribute *attr, + char *bufptr) +{ + int size = PAGE_SIZE; + int i, n; + char *buf = bufptr; + + n = snprintf(buf, size, "x86cpu:vendor:%04X:family:" + "%04X:model:%04X:feature:", + boot_cpu_data.x86_vendor, + boot_cpu_data.x86, + boot_cpu_data.x86_model); + size -= n; + buf += n; + size -= 2; + for (i = 0; i < NCAPINTS*32; i++) { + if (boot_cpu_has(i)) { + n = snprintf(buf, size, ",%04X", i); + if (n < 0) { + WARN(1, "x86 features overflow page\n"); + break; + } + size -= n; + buf += n; + } + } + *buf++ = ','; + *buf++ = '\n'; + return buf - bufptr; +} + +static DEVICE_ATTR(modalias, 0444, print_cpu_modalias, NULL); + static __cpuinit int cpuid_device_create(int cpu) { struct device *dev; + int err; dev = device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, cpu), NULL, "cpu%d", cpu); - return IS_ERR(dev) ? PTR_ERR(dev) : 0; + if (IS_ERR(dev)) + return PTR_ERR(dev); + + err = device_create_file(dev, &dev_attr_modalias); + if (err) { + /* keep device around on error. attribute is optional. */ + err = 0; + } + + return 0; } static void cpuid_device_destroy(int cpu) @@ -182,6 +227,17 @@ static char *cpuid_devnode(struct device *dev, umode_t *mode) return kasprintf(GFP_KERNEL, "cpu/%u/cpuid", MINOR(dev->devt)); } +static int cpuid_dev_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + char *buf = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (buf) { + print_cpu_modalias(NULL, NULL, buf); + add_uevent_var(env, "MODALIAS=%s", buf); + kfree(buf); + } + return 0; +} + static int __init cpuid_init(void) { int i, err = 0; @@ -200,6 +256,7 @@ static int __init cpuid_init(void) goto out_chrdev; } cpuid_class->devnode = cpuid_devnode; + cpuid_class->dev_uevent = cpuid_dev_uevent; for_each_online_cpu(i) { err = cpuid_device_create(i); if (err != 0) diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index b29e7f6..cff2cc0 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -571,4 +571,25 @@ struct amba_id { #endif }; +/* + * Match x86 CPUs for CPU specific drivers. + * See documentation of "x86_match_cpu" for details. + */ + +struct x86_cpu_id { + __u16 vendor; + __u16 family; + __u16 model; + __u16 feature; /* bit index */ + kernel_ulong_t driver_data; +}; + +#define X86_FEATURE_MATCH(x) \ + { X86_VENDOR_ANY, X86_FAMILY_ANY, X86_MODEL_ANY, x } + +#define X86_VENDOR_ANY 0xffff +#define X86_FAMILY_ANY 0 +#define X86_MODEL_ANY 0 +#define X86_FEATURE_ANY 0 /* Same as FPU, you can't test for that */ + #endif /* LINUX_MOD_DEVICETABLE_H */ diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index c0e14b3..026ba38 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -1013,6 +1013,30 @@ static int do_amba_entry(const char *filename, } ADD_TO_DEVTABLE("amba", struct amba_id, do_amba_entry); +/* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:*,FEAT,* + * All fields are numbers. It would be nicer to use strings for vendor + * and feature, but getting those out of the build system here is too + * complicated. + */ + +static int do_x86cpu_entry(const char *filename, struct x86_cpu_id *id, + char *alias) +{ + id->feature = TO_NATIVE(id->feature); + id->family = TO_NATIVE(id->family); + id->model = TO_NATIVE(id->model); + id->vendor = TO_NATIVE(id->vendor); + + strcpy(alias, "x86cpu:"); + ADD(alias, "vendor:", id->vendor != X86_VENDOR_ANY, id->vendor); + ADD(alias, ":family:", id->family != X86_FAMILY_ANY, id->family); + ADD(alias, ":model:", id->model != X86_MODEL_ANY, id->model); + ADD(alias, ":feature:*,", id->feature != X86_FEATURE_ANY, id->feature); + strcat(alias, ",*"); + return 1; +} +ADD_TO_DEVTABLE("x86cpu", struct x86_cpu_id, do_x86cpu_entry); + /* Does namelen bytes of name exactly match the symbol? */ static bool sym_is(const char *name, unsigned namelen, const char *symbol) { -- cgit v0.10.2 From 3bd391f056df61e928de1680ff4a3e7e07e5b399 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 26 Jan 2012 00:09:06 +0100 Subject: crypto: Add support for x86 cpuid auto loading for x86 crypto drivers Add support for auto-loading of crypto drivers based on cpuid features. This enables auto-loading of the VIA and Intel specific drivers for AES, hashing and CRCs. Requires the earlier infrastructure patch to add x86 modinfo. I kept it all in a single patch for now. I dropped the printks when the driver cpuid doesn't match (imho drivers never should print anything in such a case) One drawback is that udev doesn't know if the drivers are used or not, so they will be unconditionally loaded at boot up. That's better than not loading them at all, like it often happens. Cc: Dave Jones Cc: Kay Sievers Cc: Jen Axboe Cc: Herbert Xu Cc: Huang Ying Signed-off-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c index 545d0ce..b3350bd 100644 --- a/arch/x86/crypto/aesni-intel_glue.c +++ b/arch/x86/crypto/aesni-intel_glue.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -1253,14 +1254,19 @@ static struct crypto_alg __rfc4106_alg = { }; #endif + +static const struct x86_cpu_id aesni_cpu_id[] = { + X86_FEATURE_MATCH(X86_FEATURE_AES), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, aesni_cpu_id); + static int __init aesni_init(void) { int err; - if (!cpu_has_aes) { - printk(KERN_INFO "Intel AES-NI instructions are not detected.\n"); + if (!x86_match_cpu(aesni_cpu_id)) return -ENODEV; - } if ((err = crypto_fpu_init())) goto fpu_err; diff --git a/arch/x86/crypto/crc32c-intel.c b/arch/x86/crypto/crc32c-intel.c index b9d0026..493f959 100644 --- a/arch/x86/crypto/crc32c-intel.c +++ b/arch/x86/crypto/crc32c-intel.c @@ -31,6 +31,7 @@ #include #include +#include #define CHKSUM_BLOCK_SIZE 1 #define CHKSUM_DIGEST_SIZE 4 @@ -173,13 +174,17 @@ static struct shash_alg alg = { } }; +static const struct x86_cpu_id crc32c_cpu_id[] = { + X86_FEATURE_MATCH(X86_FEATURE_XMM4_2), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, crc32c_cpu_id); static int __init crc32c_intel_mod_init(void) { - if (cpu_has_xmm4_2) - return crypto_register_shash(&alg); - else + if (!x86_match_cpu(crc32c_cpu_id)) return -ENODEV; + return crypto_register_shash(&alg); } static void __exit crc32c_intel_mod_fini(void) diff --git a/arch/x86/crypto/ghash-clmulni-intel_glue.c b/arch/x86/crypto/ghash-clmulni-intel_glue.c index 976aa64..b4bf0a6 100644 --- a/arch/x86/crypto/ghash-clmulni-intel_glue.c +++ b/arch/x86/crypto/ghash-clmulni-intel_glue.c @@ -20,6 +20,7 @@ #include #include #include +#include #define GHASH_BLOCK_SIZE 16 #define GHASH_DIGEST_SIZE 16 @@ -294,15 +295,18 @@ static struct ahash_alg ghash_async_alg = { }, }; +static const struct x86_cpu_id pcmul_cpu_id[] = { + X86_FEATURE_MATCH(X86_FEATURE_PCLMULQDQ), /* Pickle-Mickle-Duck */ + {} +}; +MODULE_DEVICE_TABLE(x86cpu, pcmul_cpu_id); + static int __init ghash_pclmulqdqni_mod_init(void) { int err; - if (!cpu_has_pclmulqdq) { - printk(KERN_INFO "Intel PCLMULQDQ-NI instructions are not" - " detected.\n"); + if (!x86_match_cpu(pcmul_cpu_id)) return -ENODEV; - } err = crypto_register_shash(&ghash_alg); if (err) diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c index 29b9469..37b2e94 100644 --- a/drivers/crypto/padlock-aes.c +++ b/drivers/crypto/padlock-aes.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -503,12 +504,18 @@ static struct crypto_alg cbc_aes_alg = { } }; +static struct x86_cpu_id padlock_cpu_id[] = { + X86_FEATURE_MATCH(X86_FEATURE_XCRYPT), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, padlock_cpu_id); + static int __init padlock_init(void) { int ret; struct cpuinfo_x86 *c = &cpu_data(0); - if (!cpu_has_xcrypt) + if (!x86_match_cpu(padlock_cpu_id)) return -ENODEV; if (!cpu_has_xcrypt_enabled) { diff --git a/drivers/crypto/padlock-sha.c b/drivers/crypto/padlock-sha.c index 06bdb4b..9266c0e 100644 --- a/drivers/crypto/padlock-sha.c +++ b/drivers/crypto/padlock-sha.c @@ -22,6 +22,7 @@ #include #include #include +#include #include struct padlock_sha_desc { @@ -526,6 +527,12 @@ static struct shash_alg sha256_alg_nano = { } }; +static struct x86_cpu_id padlock_sha_ids[] = { + X86_FEATURE_MATCH(X86_FEATURE_PHE), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, padlock_sha_ids); + static int __init padlock_init(void) { int rc = -ENODEV; @@ -533,15 +540,8 @@ static int __init padlock_init(void) struct shash_alg *sha1; struct shash_alg *sha256; - if (!cpu_has_phe) { - printk(KERN_NOTICE PFX "VIA PadLock Hash Engine not detected.\n"); - return -ENODEV; - } - - if (!cpu_has_phe_enabled) { - printk(KERN_NOTICE PFX "VIA PadLock detected, but not enabled. Hmm, strange...\n"); + if (!x86_match_cpu(padlock_sha_ids) || !cpu_has_phe_enabled) return -ENODEV; - } /* Register the newly added algorithm module if on * * VIA Nano processor, or else just do as before */ -- cgit v0.10.2 From b66b8b9a4a79087dde1b358a016e5c8739ccf186 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 26 Jan 2012 00:09:07 +0100 Subject: intel-idle: convert to x86_cpu_id auto probing With this it should be automatically loaded on suitable systems by udev. The old switch () is replaced with a table based approach, this also cleans up the code. Cc: Len Brown Signed-off-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index 20bce51..ef6a409 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -62,6 +62,7 @@ #include #include #include +#include #include #include @@ -81,6 +82,17 @@ static unsigned int mwait_substates; /* Reliable LAPIC Timer States, bit 1 for C1 etc. */ static unsigned int lapic_timer_reliable_states = (1 << 1); /* Default to only C1 */ +struct idle_cpu { + struct cpuidle_state *state_table; + + /* + * Hardware C-state auto-demotion may not always be optimal. + * Indicate which enable bits to clear here. + */ + unsigned long auto_demotion_disable_flags; +}; + +static const struct idle_cpu *icpu; static struct cpuidle_device __percpu *intel_idle_cpuidle_devices; static int intel_idle(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index); @@ -88,12 +100,6 @@ static int intel_idle(struct cpuidle_device *dev, static struct cpuidle_state *cpuidle_state_table; /* - * Hardware C-state auto-demotion may not always be optimal. - * Indicate which enable bits to clear here. - */ -static unsigned long long auto_demotion_disable_flags; - -/* * Set this flag for states where the HW flushes the TLB for us * and so we don't need cross-calls to keep it consistent. * If this flag is set, SW flushes the TLB, so even if the @@ -319,27 +325,72 @@ static void auto_demotion_disable(void *dummy) unsigned long long msr_bits; rdmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits); - msr_bits &= ~auto_demotion_disable_flags; + msr_bits &= ~(icpu->auto_demotion_disable_flags); wrmsrl(MSR_NHM_SNB_PKG_CST_CFG_CTL, msr_bits); } +static const struct idle_cpu idle_cpu_nehalem = { + .state_table = nehalem_cstates, +}; + +static const struct idle_cpu idle_cpu_westmere = { + .state_table = nehalem_cstates, + .auto_demotion_disable_flags = NHM_C1_AUTO_DEMOTE | NHM_C3_AUTO_DEMOTE, +}; + +static const struct idle_cpu idle_cpu_atom = { + .state_table = atom_cstates, +}; + +static const struct idle_cpu idle_cpu_lincroft = { + .state_table = atom_cstates, + .auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE, +}; + +static const struct idle_cpu idle_cpu_snb = { + .state_table = snb_cstates, +}; + +#define ICPU(model, cpu) \ + { X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu } + +static const struct x86_cpu_id intel_idle_ids[] = { + ICPU(0x1a, idle_cpu_nehalem), + ICPU(0x1e, idle_cpu_nehalem), + ICPU(0x1f, idle_cpu_nehalem), + ICPU(0x25, idle_cpu_westmere), + ICPU(0x2c, idle_cpu_westmere), + ICPU(0x2f, idle_cpu_westmere), + ICPU(0x1c, idle_cpu_atom), + ICPU(0x26, idle_cpu_lincroft), + ICPU(0x2f, idle_cpu_westmere), + ICPU(0x2a, idle_cpu_snb), + ICPU(0x2d, idle_cpu_snb), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids); + /* * intel_idle_probe() */ static int intel_idle_probe(void) { unsigned int eax, ebx, ecx; + const struct x86_cpu_id *id; if (max_cstate == 0) { pr_debug(PREFIX "disabled\n"); return -EPERM; } - if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) - return -ENODEV; - - if (!boot_cpu_has(X86_FEATURE_MWAIT)) + id = x86_match_cpu(intel_idle_ids); + if (!id) { + if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && + boot_cpu_data.x86 == 6) + pr_debug(PREFIX "does not run on family %d model %d\n", + boot_cpu_data.x86, boot_cpu_data.x86_model); return -ENODEV; + } if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF) return -ENODEV; @@ -353,43 +404,8 @@ static int intel_idle_probe(void) pr_debug(PREFIX "MWAIT substates: 0x%x\n", mwait_substates); - - if (boot_cpu_data.x86 != 6) /* family 6 */ - return -ENODEV; - - switch (boot_cpu_data.x86_model) { - - case 0x1A: /* Core i7, Xeon 5500 series */ - case 0x1E: /* Core i7 and i5 Processor - Lynnfield Jasper Forest */ - case 0x1F: /* Core i7 and i5 Processor - Nehalem */ - case 0x2E: /* Nehalem-EX Xeon */ - case 0x2F: /* Westmere-EX Xeon */ - case 0x25: /* Westmere */ - case 0x2C: /* Westmere */ - cpuidle_state_table = nehalem_cstates; - auto_demotion_disable_flags = - (NHM_C1_AUTO_DEMOTE | NHM_C3_AUTO_DEMOTE); - break; - - case 0x1C: /* 28 - Atom Processor */ - cpuidle_state_table = atom_cstates; - break; - - case 0x26: /* 38 - Lincroft Atom Processor */ - cpuidle_state_table = atom_cstates; - auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE; - break; - - case 0x2A: /* SNB */ - case 0x2D: /* SNB Xeon */ - cpuidle_state_table = snb_cstates; - break; - - default: - pr_debug(PREFIX "does not run on family %d model %d\n", - boot_cpu_data.x86, boot_cpu_data.x86_model); - return -ENODEV; - } + icpu = (const struct idle_cpu *)id->driver_data; + cpuidle_state_table = icpu->state_table; if (boot_cpu_has(X86_FEATURE_ARAT)) /* Always Reliable APIC Timer */ lapic_timer_reliable_states = LAPIC_TIMER_ALWAYS_RELIABLE; @@ -470,7 +486,7 @@ static int intel_idle_cpuidle_driver_init(void) drv->state_count += 1; } - if (auto_demotion_disable_flags) + if (icpu->auto_demotion_disable_flags) on_each_cpu(auto_demotion_disable, NULL, 1); return 0; @@ -522,7 +538,7 @@ int intel_idle_cpu_init(int cpu) return -EIO; } - if (auto_demotion_disable_flags) + if (icpu->auto_demotion_disable_flags) smp_call_function_single(cpu, auto_demotion_disable, NULL, 1); return 0; -- cgit v0.10.2 From 9061e0e16700ef228837e96987ff51794c956197 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 26 Jan 2012 00:09:08 +0100 Subject: ACPI: Load acpi-cpufreq from processor driver automatically The only left over hole in automatic cpufreq driver loading was the loading of ACPI cpufreq. This driver should be loaded when ACPI supports a _PDC method and the CPU vendor wants to use acpi cpufreq. Simply add a request module call to the acpi processor core driver when this is true. This seems like the simplest solution for this. Cc: Len Brown Signed-off-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 0034ede..e6920d0 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -497,6 +497,7 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device) #ifdef CONFIG_CPU_FREQ acpi_processor_ppc_has_changed(pr, 0); + acpi_processor_load_module(pr); #endif acpi_processor_get_throttling_info(pr); acpi_processor_get_limit_info(pr); diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index 85b3237..0af48a8 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -240,6 +240,28 @@ void acpi_processor_ppc_exit(void) acpi_processor_ppc_status &= ~PPC_REGISTERED; } +/* + * Do a quick check if the systems looks like it should use ACPI + * cpufreq. We look at a _PCT method being available, but don't + * do a whole lot of sanity checks. + */ +void acpi_processor_load_module(struct acpi_processor *pr) +{ + static int requested; + acpi_status status = 0; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + + if (!arch_has_acpi_pdc() || requested) + return; + status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer); + if (!ACPI_FAILURE(status)) { + printk(KERN_INFO PREFIX "Requesting acpi_cpufreq\n"); + request_module_nowait("acpi_cpufreq"); + requested = 1; + } + kfree(buffer.pointer); +} + static int acpi_processor_get_performance_control(struct acpi_processor *pr) { int result = 0; diff --git a/include/acpi/processor.h b/include/acpi/processor.h index 610f6fb..da57fdc 100644 --- a/include/acpi/processor.h +++ b/include/acpi/processor.h @@ -224,6 +224,7 @@ struct acpi_processor_errata { } piix4; }; +extern void acpi_processor_load_module(struct acpi_processor *pr); extern int acpi_processor_preregister_performance(struct acpi_processor_performance __percpu *performance); -- cgit v0.10.2 From 267fc9788d0cdb77edafb506063f06961e1418f5 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 26 Jan 2012 00:09:09 +0100 Subject: HWMON: Convert via-cputemp to x86 cpuid autoprobing Use the new x86 cpuid autoprobe interface. Cc: Jean Delvare Cc: Guenter Roeck Signed-off-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/hwmon/via-cputemp.c b/drivers/hwmon/via-cputemp.c index 8eac67d..8689664 100644 --- a/drivers/hwmon/via-cputemp.c +++ b/drivers/hwmon/via-cputemp.c @@ -37,6 +37,7 @@ #include #include #include +#include #define DRVNAME "via_cputemp" @@ -308,15 +309,20 @@ static struct notifier_block via_cputemp_cpu_notifier __refdata = { .notifier_call = via_cputemp_cpu_callback, }; +static const struct x86_cpu_id cputemp_ids[] = { + { X86_VENDOR_CENTAUR, 6, 0xa, }, /* C7 A */ + { X86_VENDOR_CENTAUR, 6, 0xd, }, /* C7 D */ + { X86_VENDOR_CENTAUR, 6, 0xf, }, /* Nano */ + {} +}; +MODULE_DEVICE_TABLE(x86cpu, cputemp_ids); + static int __init via_cputemp_init(void) { int i, err; - if (cpu_data(0).x86_vendor != X86_VENDOR_CENTAUR) { - printk(KERN_DEBUG DRVNAME ": Not a VIA CPU\n"); - err = -ENODEV; - goto exit; - } + if (!x86_match_cpu(cputemp_ids)) + return -ENODEV; err = platform_driver_register(&via_cputemp_driver); if (err) -- cgit v0.10.2 From 9b38096fde5f9b93c3657911c3be7892cc155cbd Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 26 Jan 2012 00:09:10 +0100 Subject: HWMON: Convert coretemp to x86 cpuid autoprobing Use the new x86 cpuid autoprobe interface for the Intel coretemp driver. Cc: Fenghua Yu Cc: Jean Delvare Cc: Guenter Roeck Signed-off-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index a6c6ec3..249ac46 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -39,6 +39,7 @@ #include #include #include +#include #define DRVNAME "coretemp" @@ -759,13 +760,23 @@ static struct notifier_block coretemp_cpu_notifier __refdata = { .notifier_call = coretemp_cpu_callback, }; +static const struct x86_cpu_id coretemp_ids[] = { + { X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_DTS }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, coretemp_ids); + static int __init coretemp_init(void) { int i, err = -ENODEV; - /* quick check if we run Intel */ - if (cpu_data(0).x86_vendor != X86_VENDOR_INTEL) - goto exit; + /* + * CPUID.06H.EAX[0] indicates whether the CPU has thermal + * sensors. We check this bit only, all the early CPUs + * without thermal sensors will be filtered out. + */ + if (!x86_match_cpu(coretemp_ids)) + return -ENODEV; err = platform_driver_register(&coretemp_driver); if (err) -- cgit v0.10.2 From 2f1e097e24defe64a86535b53768f5c8ab0368d1 Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Thu, 26 Jan 2012 00:09:11 +0100 Subject: X86: Introduce HW-Pstate scattered cpuid feature It is rather similar to CPB (boot capability) feature and exists since fam10h (can be looked up in AMD's BKDG). The feature is needed for powernow-k8 to cleanup init functions and to provide proper autoloading matching with the new x86cpu modalias feature. Cc: Kay Sievers Cc: Dave Jones Cc: Borislav Petkov Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 17c5d4b..67b0910 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -176,6 +176,7 @@ #define X86_FEATURE_PLN (7*32+ 5) /* Intel Power Limit Notification */ #define X86_FEATURE_PTS (7*32+ 6) /* Intel Package Thermal Status */ #define X86_FEATURE_DTS (7*32+ 7) /* Digital Thermal Sensor */ +#define X86_FEATURE_HW_PSTATE (7*32+ 8) /* AMD HW-PState */ /* Virtualization flags: Linux defined, word 8 */ #define X86_FEATURE_TPR_SHADOW (8*32+ 0) /* Intel TPR Shadow */ diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c index c7f64e6..addf9e8 100644 --- a/arch/x86/kernel/cpu/scattered.c +++ b/arch/x86/kernel/cpu/scattered.c @@ -40,6 +40,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c) { X86_FEATURE_EPB, CR_ECX, 3, 0x00000006, 0 }, { X86_FEATURE_XSAVEOPT, CR_EAX, 0, 0x0000000d, 1 }, { X86_FEATURE_CPB, CR_EDX, 9, 0x80000007, 0 }, + { X86_FEATURE_HW_PSTATE, CR_EDX, 7, 0x80000007, 0 }, { X86_FEATURE_NPT, CR_EDX, 0, 0x8000000a, 0 }, { X86_FEATURE_LBRV, CR_EDX, 1, 0x8000000a, 0 }, { X86_FEATURE_SVML, CR_EDX, 2, 0x8000000a, 0 }, -- cgit v0.10.2 From fa8031aefec0cf7ea6c2387c93610d99d9659aa2 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 26 Jan 2012 00:09:12 +0100 Subject: cpufreq: Add support for x86 cpuinfo auto loading v4 This marks all the x86 cpuinfo tables to the CPU specific device drivers, to allow auto loading by udev. This should simplify the distribution startup scripts for this greatly. I didn't add MODULE_DEVICE_IDs to the centrino and p4-clockmod drivers, because those probably shouldn't be auto loaded and the acpi driver be used instead (not fully sure on that, would appreciate feedback) The old nforce drivers autoload based on the PCI ID. ACPI cpufreq is autoloaded in another patch. v3: Autoload gx based on PCI IDs only. Remove cpu check (Dave Jones) v4: Use newly introduce HW_PSTATE feature for powernow-k8 loading Cc: Dave Jones Cc: Kay Sievers Signed-off-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/cpufreq/cpufreq-nforce2.c b/drivers/cpufreq/cpufreq-nforce2.c index 7bac808..13d311e 100644 --- a/drivers/cpufreq/cpufreq-nforce2.c +++ b/drivers/cpufreq/cpufreq-nforce2.c @@ -385,6 +385,14 @@ static struct cpufreq_driver nforce2_driver = { .owner = THIS_MODULE, }; +#ifdef MODULE +static DEFINE_PCI_DEVICE_TABLE(nforce2_ids) = { + { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2 }, + {} +}; +MODULE_DEVICE_TABLE(pci, nforce2_ids); +#endif + /** * nforce2_detect_chipset - detect the Southbridge which contains FSB PLL logic * diff --git a/drivers/cpufreq/e_powersaver.c b/drivers/cpufreq/e_powersaver.c index 4bd6815..3fffbe6 100644 --- a/drivers/cpufreq/e_powersaver.c +++ b/drivers/cpufreq/e_powersaver.c @@ -16,6 +16,7 @@ #include #include +#include #include #include @@ -437,18 +438,19 @@ static struct cpufreq_driver eps_driver = { .attr = eps_attr, }; + +/* This driver will work only on Centaur C7 processors with + * Enhanced SpeedStep/PowerSaver registers */ +static const struct x86_cpu_id eps_cpu_id[] = { + { X86_VENDOR_CENTAUR, 6, X86_MODEL_ANY, X86_FEATURE_EST }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, eps_cpu_id); + static int __init eps_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); - - /* This driver will work only on Centaur C7 processors with - * Enhanced SpeedStep/PowerSaver registers */ - if (c->x86_vendor != X86_VENDOR_CENTAUR - || c->x86 != 6 || c->x86_model < 10) - return -ENODEV; - if (!cpu_has(c, X86_FEATURE_EST)) + if (!x86_match_cpu(eps_cpu_id) || boot_cpu_data.x86_model < 10) return -ENODEV; - if (cpufreq_register_driver(&eps_driver)) return -EINVAL; return 0; diff --git a/drivers/cpufreq/elanfreq.c b/drivers/cpufreq/elanfreq.c index c587db4..960671f 100644 --- a/drivers/cpufreq/elanfreq.c +++ b/drivers/cpufreq/elanfreq.c @@ -23,6 +23,7 @@ #include #include +#include #include #include #include @@ -277,17 +278,16 @@ static struct cpufreq_driver elanfreq_driver = { .attr = elanfreq_attr, }; +static const struct x86_cpu_id elan_id[] = { + { X86_VENDOR_AMD, 4, 10, }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, elan_id); static int __init elanfreq_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); - - /* Test if we have the right hardware */ - if ((c->x86_vendor != X86_VENDOR_AMD) || - (c->x86 != 4) || (c->x86_model != 10)) { - printk(KERN_INFO "elanfreq: error: no Elan processor found!\n"); + if (!x86_match_cpu(elan_id)) return -ENODEV; - } return cpufreq_register_driver(&elanfreq_driver); } diff --git a/drivers/cpufreq/gx-suspmod.c b/drivers/cpufreq/gx-suspmod.c index ffe1f2c..5a06c0b 100644 --- a/drivers/cpufreq/gx-suspmod.c +++ b/drivers/cpufreq/gx-suspmod.c @@ -82,6 +82,7 @@ #include #include +#include #include /* PCI config registers, all at F0 */ @@ -171,6 +172,7 @@ static struct pci_device_id gx_chipset_tbl[] __initdata = { { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), }, { 0, }, }; +MODULE_DEVICE_TABLE(gx_chipset_tbl); static void gx_write_byte(int reg, int value) { @@ -185,13 +187,6 @@ static __init struct pci_dev *gx_detect_chipset(void) { struct pci_dev *gx_pci = NULL; - /* check if CPU is a MediaGX or a Geode. */ - if ((boot_cpu_data.x86_vendor != X86_VENDOR_NSC) && - (boot_cpu_data.x86_vendor != X86_VENDOR_CYRIX)) { - pr_debug("error: no MediaGX/Geode processor found!\n"); - return NULL; - } - /* detect which companion chip is used */ for_each_pci_dev(gx_pci) { if ((pci_match_id(gx_chipset_tbl, gx_pci)) != NULL) diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index f47d26e..53ddbc7 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -35,6 +35,7 @@ #include #include +#include #include #include "longhaul.h" @@ -951,12 +952,17 @@ static struct cpufreq_driver longhaul_driver = { .attr = longhaul_attr, }; +static const struct x86_cpu_id longhaul_id[] = { + { X86_VENDOR_CENTAUR, 6 }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, longhaul_id); static int __init longhaul_init(void) { struct cpuinfo_x86 *c = &cpu_data(0); - if (c->x86_vendor != X86_VENDOR_CENTAUR || c->x86 != 6) + if (!x86_match_cpu(longhaul_id)) return -ENODEV; #ifdef CONFIG_SMP diff --git a/drivers/cpufreq/longrun.c b/drivers/cpufreq/longrun.c index 34ea359..8bc9f5f 100644 --- a/drivers/cpufreq/longrun.c +++ b/drivers/cpufreq/longrun.c @@ -14,6 +14,7 @@ #include #include +#include static struct cpufreq_driver longrun_driver; @@ -288,6 +289,12 @@ static struct cpufreq_driver longrun_driver = { .owner = THIS_MODULE, }; +static const struct x86_cpu_id longrun_ids[] = { + { X86_VENDOR_TRANSMETA, X86_FAMILY_ANY, X86_MODEL_ANY, + X86_FEATURE_LONGRUN }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, longrun_ids); /** * longrun_init - initializes the Transmeta Crusoe LongRun CPUFreq driver @@ -296,12 +303,8 @@ static struct cpufreq_driver longrun_driver = { */ static int __init longrun_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); - - if (c->x86_vendor != X86_VENDOR_TRANSMETA || - !cpu_has(c, X86_FEATURE_LONGRUN)) + if (!x86_match_cpu(longrun_ids)) return -ENODEV; - return cpufreq_register_driver(&longrun_driver); } diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c index 6be3e07..827629c9 100644 --- a/drivers/cpufreq/p4-clockmod.c +++ b/drivers/cpufreq/p4-clockmod.c @@ -31,6 +31,7 @@ #include #include #include +#include #include "speedstep-lib.h" @@ -289,21 +290,25 @@ static struct cpufreq_driver p4clockmod_driver = { .attr = p4clockmod_attr, }; +static const struct x86_cpu_id cpufreq_p4_id[] = { + { X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_ACC }, + {} +}; + +/* + * Intentionally no MODULE_DEVICE_TABLE here: this driver should not + * be auto loaded. Please don't add one. + */ static int __init cpufreq_p4_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); int ret; /* * THERM_CONTROL is architectural for IA32 now, so * we can rely on the capability checks */ - if (c->x86_vendor != X86_VENDOR_INTEL) - return -ENODEV; - - if (!test_cpu_cap(c, X86_FEATURE_ACPI) || - !test_cpu_cap(c, X86_FEATURE_ACC)) + if (!x86_match_cpu(cpufreq_p4_id) || !boot_cpu_has(X86_FEATURE_ACPI)) return -ENODEV; ret = cpufreq_register_driver(&p4clockmod_driver); diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index b3379d6..54dd031 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -16,6 +16,7 @@ #include #include +#include #include #define POWERNOW_IOPORT 0xfff0 /* it doesn't matter where, as long @@ -210,6 +211,12 @@ static struct cpufreq_driver powernow_k6_driver = { .attr = powernow_k6_attr, }; +static const struct x86_cpu_id powernow_k6_ids[] = { + { X86_VENDOR_AMD, 5, 12 }, + { X86_VENDOR_AMD, 5, 13 }, + {} +}; + /** * powernow_k6_init - initializes the k6 PowerNow! CPUFreq driver @@ -220,10 +227,7 @@ static struct cpufreq_driver powernow_k6_driver = { */ static int __init powernow_k6_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); - - if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 5) || - ((c->x86_model != 12) && (c->x86_model != 13))) + if (!x86_match_cpu(powernow_k6_ids)) return -ENODEV; if (!request_region(POWERNOW_IOPORT, 16, "PowerNow!")) { diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c index d71d9f3..501d167 100644 --- a/drivers/cpufreq/powernow-k7.c +++ b/drivers/cpufreq/powernow-k7.c @@ -28,6 +28,7 @@ #include /* Needed for recalibrate_cpu_khz() */ #include #include +#include #ifdef CONFIG_X86_POWERNOW_K7_ACPI #include @@ -110,18 +111,19 @@ static int check_fsb(unsigned int fsbspeed) return delta < 5; } +static const struct x86_cpu_id powernow_k7_cpuids[] = { + { X86_VENDOR_AMD, 7, }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, powernow_k7_cpuids); + static int check_powernow(void) { struct cpuinfo_x86 *c = &cpu_data(0); unsigned int maxei, eax, ebx, ecx, edx; - if ((c->x86_vendor != X86_VENDOR_AMD) || (c->x86 != 6)) { -#ifdef MODULE - printk(KERN_INFO PFX "This module only works with " - "AMD K7 CPUs\n"); -#endif + if (!x86_match_cpu(powernow_k7_cpuids)) return 0; - } /* Get maximum capabilities */ maxei = cpuid_eax(0x80000000); diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 8f9b2cee..c0e8164 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -40,6 +40,7 @@ #include #include +#include #include #include @@ -520,6 +521,15 @@ static int core_voltage_post_transition(struct powernow_k8_data *data, return 0; } +static const struct x86_cpu_id powernow_k8_ids[] = { + /* IO based frequency switching */ + { X86_VENDOR_AMD, 0xf }, + /* MSR based frequency switching supported */ + X86_FEATURE_MATCH(X86_FEATURE_HW_PSTATE), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, powernow_k8_ids); + static void check_supported_cpu(void *_rc) { u32 eax, ebx, ecx, edx; @@ -527,13 +537,7 @@ static void check_supported_cpu(void *_rc) *rc = -ENODEV; - if (__this_cpu_read(cpu_info.x86_vendor) != X86_VENDOR_AMD) - return; - eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE); - if (((eax & CPUID_XFAM) != CPUID_XFAM_K8) && - ((eax & CPUID_XFAM) < CPUID_XFAM_10H)) - return; if ((eax & CPUID_XFAM) == CPUID_XFAM_K8) { if (((eax & CPUID_USE_XFAM_XMOD) != CPUID_USE_XFAM_XMOD) || @@ -1553,6 +1557,9 @@ static int __cpuinit powernowk8_init(void) unsigned int i, supported_cpus = 0, cpu; int rv; + if (!x86_match_cpu(powernow_k8_ids)) + return -ENODEV; + for_each_online_cpu(i) { int rc; smp_call_function_single(i, check_supported_cpu, &rc, 1); diff --git a/drivers/cpufreq/sc520_freq.c b/drivers/cpufreq/sc520_freq.c index 1e205e6..e42e073 100644 --- a/drivers/cpufreq/sc520_freq.c +++ b/drivers/cpufreq/sc520_freq.c @@ -22,6 +22,7 @@ #include #include +#include #include #define MMCR_BASE 0xfffef000 /* The default base address */ @@ -150,18 +151,19 @@ static struct cpufreq_driver sc520_freq_driver = { .attr = sc520_freq_attr, }; +static const struct x86_cpu_id sc520_ids[] = { + { X86_VENDOR_AMD, 4, 9 }, + {} +}; +MODULE_DEVICE_TABLE(x86cpu, sc520_ids); static int __init sc520_freq_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); int err; - /* Test if we have the right hardware */ - if (c->x86_vendor != X86_VENDOR_AMD || - c->x86 != 4 || c->x86_model != 9) { - pr_debug("no Elan SC520 processor found!\n"); + if (!x86_match_cpu(sc520_ids)) return -ENODEV; - } + cpuctl = ioremap((unsigned long)(MMCR_BASE + OFFS_CPUCTL), 1); if (!cpuctl) { printk(KERN_ERR "sc520_freq: error: failed to remap memory\n"); diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c index 6ea3455..3a953d5 100644 --- a/drivers/cpufreq/speedstep-centrino.c +++ b/drivers/cpufreq/speedstep-centrino.c @@ -25,6 +25,7 @@ #include #include #include +#include #define PFX "speedstep-centrino: " #define MAINTAINER "cpufreq@vger.kernel.org" @@ -595,6 +596,24 @@ static struct cpufreq_driver centrino_driver = { .owner = THIS_MODULE, }; +/* + * This doesn't replace the detailed checks above because + * the generic CPU IDs don't have a way to match for steppings + * or ASCII model IDs. + */ +static const struct x86_cpu_id centrino_ids[] = { + { X86_VENDOR_INTEL, 6, 9, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 6, 13, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 15, 3, X86_FEATURE_EST }, + { X86_VENDOR_INTEL, 15, 4, X86_FEATURE_EST }, + {} +}; +#if 0 +/* Autoload or not? Do not for now. */ +MODULE_DEVICE_TABLE(x86cpu, centrino_ids); +#endif /** * centrino_init - initializes the Enhanced SpeedStep CPUFreq driver @@ -612,11 +631,8 @@ static struct cpufreq_driver centrino_driver = { */ static int __init centrino_init(void) { - struct cpuinfo_x86 *cpu = &cpu_data(0); - - if (!cpu_has(cpu, X86_FEATURE_EST)) + if (!x86_match_cpu(centrino_ids)) return -ENODEV; - return cpufreq_register_driver(¢rino_driver); } diff --git a/drivers/cpufreq/speedstep-ich.c b/drivers/cpufreq/speedstep-ich.c index a748ce7..7432b3a 100644 --- a/drivers/cpufreq/speedstep-ich.c +++ b/drivers/cpufreq/speedstep-ich.c @@ -25,6 +25,8 @@ #include #include +#include + #include "speedstep-lib.h" @@ -388,6 +390,16 @@ static struct cpufreq_driver speedstep_driver = { .attr = speedstep_attr, }; +static const struct x86_cpu_id ss_smi_ids[] = { + { X86_VENDOR_INTEL, 6, 0xb, }, + { X86_VENDOR_INTEL, 6, 0x8, }, + { X86_VENDOR_INTEL, 15, 2 }, + {} +}; +#if 0 +/* Autoload or not? Do not for now. */ +MODULE_DEVICE_TABLE(x86cpu, ss_smi_ids); +#endif /** * speedstep_init - initializes the SpeedStep CPUFreq driver @@ -398,6 +410,9 @@ static struct cpufreq_driver speedstep_driver = { */ static int __init speedstep_init(void) { + if (!x86_match_cpu(ss_smi_ids)) + return -ENODEV; + /* detect processor */ speedstep_processor = speedstep_detect_processor(); if (!speedstep_processor) { diff --git a/drivers/cpufreq/speedstep-lib.c b/drivers/cpufreq/speedstep-lib.c index 8af2d2f..7047821 100644 --- a/drivers/cpufreq/speedstep-lib.c +++ b/drivers/cpufreq/speedstep-lib.c @@ -249,6 +249,7 @@ EXPORT_SYMBOL_GPL(speedstep_get_frequency); * DETECT SPEEDSTEP-CAPABLE PROCESSOR * *********************************************************************/ +/* Keep in sync with the x86_cpu_id tables in the different modules */ unsigned int speedstep_detect_processor(void) { struct cpuinfo_x86 *c = &cpu_data(0); diff --git a/drivers/cpufreq/speedstep-smi.c b/drivers/cpufreq/speedstep-smi.c index c76ead3..6a457fc 100644 --- a/drivers/cpufreq/speedstep-smi.c +++ b/drivers/cpufreq/speedstep-smi.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "speedstep-lib.h" @@ -379,6 +380,17 @@ static struct cpufreq_driver speedstep_driver = { .attr = speedstep_attr, }; +static const struct x86_cpu_id ss_smi_ids[] = { + { X86_VENDOR_INTEL, 6, 0xb, }, + { X86_VENDOR_INTEL, 6, 0x8, }, + { X86_VENDOR_INTEL, 15, 2 }, + {} +}; +#if 0 +/* Not auto loaded currently */ +MODULE_DEVICE_TABLE(x86cpu, ss_smi_ids); +#endif + /** * speedstep_init - initializes the SpeedStep CPUFreq driver * @@ -388,6 +400,9 @@ static struct cpufreq_driver speedstep_driver = { */ static int __init speedstep_init(void) { + if (!x86_match_cpu(ss_smi_ids)) + return -ENODEV; + speedstep_processor = speedstep_detect_processor(); switch (speedstep_processor) { -- cgit v0.10.2 From 78ff123b05fb15beb1ad670372eea0d299d0b8af Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Thu, 26 Jan 2012 00:09:13 +0100 Subject: x86: autoload microcode driver on Intel and AMD systems v2 Don't try to describe the actual models for now. v2: Fix typo: X86_VENDOR_ANY -> X86_FAMILY_ANY (trenn) Signed-off-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c index fda91c3..87a0f86 100644 --- a/arch/x86/kernel/microcode_core.c +++ b/arch/x86/kernel/microcode_core.c @@ -86,6 +86,7 @@ #include #include +#include MODULE_DESCRIPTION("Microcode Update Driver"); MODULE_AUTHOR("Tigran Aivazian "); @@ -504,6 +505,20 @@ static struct notifier_block __refdata mc_cpu_notifier = { .notifier_call = mc_cpu_callback, }; +#ifdef MODULE +/* Autoload on Intel and AMD systems */ +static const struct x86_cpu_id microcode_id[] = { +#ifdef CONFIG_MICROCODE_INTEL + { X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, }, +#endif +#ifdef CONFIG_MICROCODE_AMD + { X86_VENDOR_AMD, X86_FAMILY_ANY, X86_MODEL_ANY, }, +#endif + {} +}; +MODULE_DEVICE_TABLE(x86cpu, microcode_id); +#endif + static int __init microcode_init(void) { struct cpuinfo_x86 *c = &cpu_data(0); -- cgit v0.10.2 From fad12ac8c8c2591c7f4e61d19b6a9d76cd49fafa Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Thu, 26 Jan 2012 00:09:14 +0100 Subject: CPU: Introduce ARCH_HAS_CPU_AUTOPROBE and X86 parts This patch is based on Andi Kleen's work: Implement autoprobing/loading of modules serving CPU specific features (x86cpu autoloading). And Kay Siever's work to get rid of sysdev cpu structures and making use of struct device instead. Before, the cpuid driver had to be loaded to get the x86cpu autoloading feature. With this patch autoloading works through the /sys/devices/system/cpu object Cc: Kay Sievers Cc: Dave Jones Cc: Jens Axboe Cc: Herbert Xu Cc: Huang Ying Cc: Len Brown Acked-by: Andi Kleen Signed-off-by: Thomas Renninger Acked-by: H. Peter Anvin Signed-off-by: Greg Kroah-Hartman diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 864cc6e..6baa1e6 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -179,6 +179,9 @@ config ARCH_HAS_DEFAULT_IDLE config ARCH_HAS_CACHE_LINE_SIZE def_bool y +config ARCH_HAS_CPU_AUTOPROBE + def_bool y + config HAVE_SETUP_PER_CPU_AREA def_bool y diff --git a/arch/x86/kernel/cpu/match.c b/arch/x86/kernel/cpu/match.c index 7acc961..940e2d4 100644 --- a/arch/x86/kernel/cpu/match.c +++ b/arch/x86/kernel/cpu/match.c @@ -2,6 +2,7 @@ #include #include #include +#include /** * x86_match_cpu - match current CPU again an array of x86_cpu_ids @@ -46,3 +47,46 @@ const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match) return NULL; } EXPORT_SYMBOL(x86_match_cpu); + +ssize_t arch_print_cpu_modalias(struct device *dev, + struct device_attribute *attr, + char *bufptr) +{ + int size = PAGE_SIZE; + int i, n; + char *buf = bufptr; + + n = snprintf(buf, size, "x86cpu:vendor:%04X:family:%04X:" + "model:%04X:feature:", + boot_cpu_data.x86_vendor, + boot_cpu_data.x86, + boot_cpu_data.x86_model); + size -= n; + buf += n; + size -= 2; + for (i = 0; i < NCAPINTS*32; i++) { + if (boot_cpu_has(i)) { + n = snprintf(buf, size, ",%04X", i); + if (n < 0) { + WARN(1, "x86 features overflow page\n"); + break; + } + size -= n; + buf += n; + } + } + *buf++ = ','; + *buf++ = '\n'; + return buf - bufptr; +} + +int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + char *buf = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (buf) { + arch_print_cpu_modalias(NULL, NULL, buf); + add_uevent_var(env, "MODALIAS=%s", buf); + kfree(buf); + } + return 0; +} diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c index 7c89880..a524353 100644 --- a/arch/x86/kernel/cpuid.c +++ b/arch/x86/kernel/cpuid.c @@ -40,7 +40,6 @@ #include #include #include -#include #include #include @@ -139,57 +138,13 @@ static const struct file_operations cpuid_fops = { .open = cpuid_open, }; -static ssize_t print_cpu_modalias(struct device *dev, - struct device_attribute *attr, - char *bufptr) -{ - int size = PAGE_SIZE; - int i, n; - char *buf = bufptr; - - n = snprintf(buf, size, "x86cpu:vendor:%04X:family:" - "%04X:model:%04X:feature:", - boot_cpu_data.x86_vendor, - boot_cpu_data.x86, - boot_cpu_data.x86_model); - size -= n; - buf += n; - size -= 2; - for (i = 0; i < NCAPINTS*32; i++) { - if (boot_cpu_has(i)) { - n = snprintf(buf, size, ",%04X", i); - if (n < 0) { - WARN(1, "x86 features overflow page\n"); - break; - } - size -= n; - buf += n; - } - } - *buf++ = ','; - *buf++ = '\n'; - return buf - bufptr; -} - -static DEVICE_ATTR(modalias, 0444, print_cpu_modalias, NULL); - static __cpuinit int cpuid_device_create(int cpu) { struct device *dev; - int err; dev = device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, cpu), NULL, "cpu%d", cpu); - if (IS_ERR(dev)) - return PTR_ERR(dev); - - err = device_create_file(dev, &dev_attr_modalias); - if (err) { - /* keep device around on error. attribute is optional. */ - err = 0; - } - - return 0; + return IS_ERR(dev) ? PTR_ERR(dev) : 0; } static void cpuid_device_destroy(int cpu) @@ -227,17 +182,6 @@ static char *cpuid_devnode(struct device *dev, umode_t *mode) return kasprintf(GFP_KERNEL, "cpu/%u/cpuid", MINOR(dev->devt)); } -static int cpuid_dev_uevent(struct device *dev, struct kobj_uevent_env *env) -{ - char *buf = kzalloc(PAGE_SIZE, GFP_KERNEL); - if (buf) { - print_cpu_modalias(NULL, NULL, buf); - add_uevent_var(env, "MODALIAS=%s", buf); - kfree(buf); - } - return 0; -} - static int __init cpuid_init(void) { int i, err = 0; @@ -256,7 +200,6 @@ static int __init cpuid_init(void) goto out_chrdev; } cpuid_class->devnode = cpuid_devnode; - cpuid_class->dev_uevent = cpuid_dev_uevent; for_each_online_cpu(i) { err = cpuid_device_create(i); if (err != 0) diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index db87e78..2a0c670 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include "base.h" @@ -223,6 +224,9 @@ int __cpuinit register_cpu(struct cpu *cpu, int num) cpu->node_id = cpu_to_node(num); cpu->dev.id = num; cpu->dev.bus = &cpu_subsys; +#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE + cpu->dev.bus->uevent = arch_cpu_uevent; +#endif error = device_register(&cpu->dev); if (!error && cpu->hotpluggable) register_cpu_control(cpu); @@ -247,6 +251,10 @@ struct device *get_cpu_device(unsigned cpu) } EXPORT_SYMBOL_GPL(get_cpu_device); +#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE +static DEVICE_ATTR(modalias, 0444, arch_print_cpu_modalias, NULL); +#endif + static struct attribute *cpu_root_attrs[] = { #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE &dev_attr_probe.attr, @@ -257,6 +265,9 @@ static struct attribute *cpu_root_attrs[] = { &cpu_attrs[2].attr.attr, &dev_attr_kernel_max.attr, &dev_attr_offline.attr, +#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE + &dev_attr_modalias.attr, +#endif NULL }; diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 1f65875..6e53b48 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -44,6 +44,13 @@ extern ssize_t arch_cpu_release(const char *, size_t); #endif struct notifier_block; +#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE +extern int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env); +extern ssize_t arch_print_cpu_modalias(struct device *dev, + struct device_attribute *attr, + char *bufptr); +#endif + /* * CPU notifier priorities. */ -- cgit v0.10.2 From ed283e9f0a2cc0541870828c76c6c6997c51a318 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Jan 2012 14:35:13 -0500 Subject: USB/PCI/PCMCIA: Clean up new_id and remove_id sysfs attribute routines This patch (as1514) cleans up some places where new_id and remove_id sysfs attributes are created and deleted. Handling both attributes in a single routine rather than a pair of routines makes the code smaller. It also prevents certain kinds of errors, like one we currently have in the USB subsystem: The removeid attribute is often created even when newid isn't (because the driver's no_dynamid_id flag is set). In the case of the PCMCIA subsystem, the newid attribute is created but never explicitly deleted. The patch adds a deletion routine. Signed-off-by: Alan Stern Acked-by: Jesse Barnes Acked-by: Dominik Brodowski Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index ff54047..8d9616b 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -188,43 +188,34 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count) static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id); static int -pci_create_newid_file(struct pci_driver *drv) +pci_create_newid_files(struct pci_driver *drv) { int error = 0; - if (drv->probe != NULL) - error = driver_create_file(&drv->driver, &driver_attr_new_id); - return error; -} - -static void pci_remove_newid_file(struct pci_driver *drv) -{ - driver_remove_file(&drv->driver, &driver_attr_new_id); -} -static int -pci_create_removeid_file(struct pci_driver *drv) -{ - int error = 0; - if (drv->probe != NULL) - error = driver_create_file(&drv->driver,&driver_attr_remove_id); + if (drv->probe != NULL) { + error = driver_create_file(&drv->driver, &driver_attr_new_id); + if (error == 0) { + error = driver_create_file(&drv->driver, + &driver_attr_remove_id); + if (error) + driver_remove_file(&drv->driver, + &driver_attr_new_id); + } + } return error; } -static void pci_remove_removeid_file(struct pci_driver *drv) +static void pci_remove_newid_files(struct pci_driver *drv) { driver_remove_file(&drv->driver, &driver_attr_remove_id); + driver_remove_file(&drv->driver, &driver_attr_new_id); } #else /* !CONFIG_HOTPLUG */ -static inline int pci_create_newid_file(struct pci_driver *drv) +static inline int pci_create_newid_files(struct pci_driver *drv) { return 0; } -static inline void pci_remove_newid_file(struct pci_driver *drv) {} -static inline int pci_create_removeid_file(struct pci_driver *drv) -{ - return 0; -} -static inline void pci_remove_removeid_file(struct pci_driver *drv) {} +static inline void pci_remove_newid_files(struct pci_driver *drv) {} #endif /** @@ -1136,18 +1127,12 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner, if (error) goto out; - error = pci_create_newid_file(drv); + error = pci_create_newid_files(drv); if (error) goto out_newid; - - error = pci_create_removeid_file(drv); - if (error) - goto out_removeid; out: return error; -out_removeid: - pci_remove_newid_file(drv); out_newid: driver_unregister(&drv->driver); goto out; @@ -1166,8 +1151,7 @@ out_newid: void pci_unregister_driver(struct pci_driver *drv) { - pci_remove_removeid_file(drv); - pci_remove_newid_file(drv); + pci_remove_newid_files(drv); driver_unregister(&drv->driver); pci_free_dynids(drv); } diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index 059699f..249b889 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -157,6 +157,11 @@ pcmcia_create_newid_file(struct pcmcia_driver *drv) return error; } +static void +pcmcia_remove_newid_file(struct pcmcia_driver *drv) +{ + driver_remove_file(&drv->drv, &driver_attr_new_id); +} /** * pcmcia_register_driver - register a PCMCIA driver with the bus core @@ -201,6 +206,7 @@ EXPORT_SYMBOL(pcmcia_register_driver); void pcmcia_unregister_driver(struct pcmcia_driver *driver) { pr_debug("unregistering driver %s\n", driver->name); + pcmcia_remove_newid_file(driver); driver_unregister(&driver->drv); pcmcia_free_dynids(driver); } diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 54c493b..4fee024 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -129,43 +129,39 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count) } static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id); -static int usb_create_newid_file(struct usb_driver *usb_drv) +static int usb_create_newid_files(struct usb_driver *usb_drv) { int error = 0; if (usb_drv->no_dynamic_id) goto exit; - if (usb_drv->probe != NULL) + if (usb_drv->probe != NULL) { error = driver_create_file(&usb_drv->drvwrap.driver, &driver_attr_new_id); + if (error == 0) { + error = driver_create_file(&usb_drv->drvwrap.driver, + &driver_attr_remove_id); + if (error) + driver_remove_file(&usb_drv->drvwrap.driver, + &driver_attr_new_id); + } + } exit: return error; } -static void usb_remove_newid_file(struct usb_driver *usb_drv) +static void usb_remove_newid_files(struct usb_driver *usb_drv) { if (usb_drv->no_dynamic_id) return; - if (usb_drv->probe != NULL) + if (usb_drv->probe != NULL) { driver_remove_file(&usb_drv->drvwrap.driver, - &driver_attr_new_id); -} - -static int -usb_create_removeid_file(struct usb_driver *drv) -{ - int error = 0; - if (drv->probe != NULL) - error = driver_create_file(&drv->drvwrap.driver, &driver_attr_remove_id); - return error; -} - -static void usb_remove_removeid_file(struct usb_driver *drv) -{ - driver_remove_file(&drv->drvwrap.driver, &driver_attr_remove_id); + driver_remove_file(&usb_drv->drvwrap.driver, + &driver_attr_new_id); + } } static void usb_free_dynids(struct usb_driver *usb_drv) @@ -180,22 +176,12 @@ static void usb_free_dynids(struct usb_driver *usb_drv) spin_unlock(&usb_drv->dynids.lock); } #else -static inline int usb_create_newid_file(struct usb_driver *usb_drv) -{ - return 0; -} - -static void usb_remove_newid_file(struct usb_driver *usb_drv) -{ -} - -static int -usb_create_removeid_file(struct usb_driver *drv) +static inline int usb_create_newid_files(struct usb_driver *usb_drv) { return 0; } -static void usb_remove_removeid_file(struct usb_driver *drv) +static void usb_remove_newid_files(struct usb_driver *usb_drv) { } @@ -872,22 +858,16 @@ int usb_register_driver(struct usb_driver *new_driver, struct module *owner, usbfs_update_special(); - retval = usb_create_newid_file(new_driver); + retval = usb_create_newid_files(new_driver); if (retval) goto out_newid; - retval = usb_create_removeid_file(new_driver); - if (retval) - goto out_removeid; - pr_info("%s: registered new interface driver %s\n", usbcore_name, new_driver->name); out: return retval; -out_removeid: - usb_remove_newid_file(new_driver); out_newid: driver_unregister(&new_driver->drvwrap.driver); @@ -914,10 +894,9 @@ void usb_deregister(struct usb_driver *driver) pr_info("%s: deregistering interface driver %s\n", usbcore_name, driver->name); - usb_remove_removeid_file(driver); - usb_remove_newid_file(driver); - usb_free_dynids(driver); + usb_remove_newid_files(driver); driver_unregister(&driver->drvwrap.driver); + usb_free_dynids(driver); usbfs_update_special(); } -- cgit v0.10.2 From 07d251460bbf9752c6532af8c1a68328c199dd70 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 27 Jan 2012 10:24:40 -0500 Subject: PCI/XEN: Fix bug introduced by a recent change This patch (as1516) fixes a bug introduced during the removal of put_driver() and get_driver() from drivers/pci/xen-pcifront.c. Reported-by: Stephen Rothwell Signed-off-by: Alan Stern Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c index 6f81998..98387ca 100644 --- a/drivers/pci/xen-pcifront.c +++ b/drivers/pci/xen-pcifront.c @@ -593,7 +593,7 @@ static pci_ers_result_t pcifront_common_process(int cmd, } pdrv = pcidev->driver; - if (pdrv->driver) { + if (pdrv) { if (pdrv->err_handler && pdrv->err_handler->error_detected) { dev_dbg(&pcidev->dev, "trying to call AER service\n"); -- cgit v0.10.2 From b9576623c4217a5d753c272158e1e108c25a1a57 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 11 Jan 2012 09:46:59 +0100 Subject: ARM: plat-nomadik: get rid of global mtu base pointer Pass the base offset to the Nomadik MTU timer in the init call instead of keeping a global pointer to be assigned. Acked-by: Alessandro Rubini Signed-off-by: Linus Walleij diff --git a/arch/arm/mach-nomadik/board-nhk8815.c b/arch/arm/mach-nomadik/board-nhk8815.c index 7c878bf..b77cb84 100644 --- a/arch/arm/mach-nomadik/board-nhk8815.c +++ b/arch/arm/mach-nomadik/board-nhk8815.c @@ -27,11 +27,11 @@ #include #include #include +#include #include #include -#include #include #include @@ -255,10 +255,7 @@ static void __init nomadik_timer_init(void) src_cr |= SRC_CR_INIT_VAL; writel(src_cr, io_p2v(NOMADIK_SRC_BASE)); - /* Save global pointer to mtu, used by platform timer code */ - mtu_base = io_p2v(NOMADIK_MTU0_BASE); - - nmdk_timer_init(); + nmdk_timer_init(io_p2v(NOMADIK_MTU0_BASE)); } static struct sys_timer nomadik_timer = { diff --git a/arch/arm/mach-nomadik/include/mach/setup.h b/arch/arm/mach-nomadik/include/mach/setup.h deleted file mode 100644 index bcaeaf4..0000000 --- a/arch/arm/mach-nomadik/include/mach/setup.h +++ /dev/null @@ -1,19 +0,0 @@ - -/* - * These symbols are needed for board-specific files to call their - * own cpu-specific files - */ - -#ifndef __ASM_ARCH_SETUP_H -#define __ASM_ARCH_SETUP_H - -#include -#include - -#ifdef CONFIG_NOMADIK_8815 - -extern void nmdk_timer_init(void); - -#endif /* NOMADIK_8815 */ - -#endif /* __ASM_ARCH_SETUP_H */ diff --git a/arch/arm/mach-ux500/include/mach/setup.h b/arch/arm/mach-ux500/include/mach/setup.h index a7d363f..93d4039 100644 --- a/arch/arm/mach-ux500/include/mach/setup.h +++ b/arch/arm/mach-ux500/include/mach/setup.h @@ -27,9 +27,6 @@ extern void __init u5500_sdi_init(void); extern void __init db5500_dma_init(void); -/* We re-use nomadik_timer for this platform */ -extern void nmdk_timer_init(void); - struct amba_device; extern void __init amba_add_devices(struct amba_device *devs[], int num); diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c index aea467d..fd00024 100644 --- a/arch/arm/mach-ux500/timer.c +++ b/arch/arm/mach-ux500/timer.c @@ -17,19 +17,20 @@ static void __init ux500_timer_init(void) { + void __iomem *mtu_timer_base; void __iomem *prcmu_timer_base; if (cpu_is_u5500()) { #ifdef CONFIG_LOCAL_TIMERS twd_base = __io_address(U5500_TWD_BASE); #endif - mtu_base = __io_address(U5500_MTU0_BASE); + mtu_timer_base = __io_address(U5500_MTU0_BASE); prcmu_timer_base = __io_address(U5500_PRCMU_TIMER_3_BASE); } else if (cpu_is_u8500()) { #ifdef CONFIG_LOCAL_TIMERS twd_base = __io_address(U8500_TWD_BASE); #endif - mtu_base = __io_address(U8500_MTU0_BASE); + mtu_timer_base = __io_address(U8500_MTU0_BASE); prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE); } else { ux500_unknown_soc(); @@ -52,7 +53,7 @@ static void __init ux500_timer_init(void) * */ - nmdk_timer_init(); + nmdk_timer_init(mtu_timer_base); clksrc_dbx500_prcmu_init(prcmu_timer_base); } diff --git a/arch/arm/plat-nomadik/include/plat/mtu.h b/arch/arm/plat-nomadik/include/plat/mtu.h index 6508e76..582641f 100644 --- a/arch/arm/plat-nomadik/include/plat/mtu.h +++ b/arch/arm/plat-nomadik/include/plat/mtu.h @@ -1,9 +1,7 @@ #ifndef __PLAT_MTU_H #define __PLAT_MTU_H -/* should be set by the platform code */ -extern void __iomem *mtu_base; - +void nmdk_timer_init(void __iomem *base); void nmdk_clkevt_reset(void); void nmdk_clksrc_reset(void); diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c index ad1b45b..46f50f2 100644 --- a/arch/arm/plat-nomadik/timer.c +++ b/arch/arm/plat-nomadik/timer.c @@ -66,12 +66,11 @@ #define MTU_PCELL2 0xff8 #define MTU_PCELL3 0xffC +static void __iomem *mtu_base; static bool clkevt_periodic; static u32 clk_prescale; static u32 nmdk_cycle; /* write-once */ -void __iomem *mtu_base; /* Assigned by machine code */ - #ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK /* * Override the global weak sched_clock symbol with this @@ -183,11 +182,12 @@ void nmdk_clksrc_reset(void) mtu_base + MTU_CR(0)); } -void __init nmdk_timer_init(void) +void __init nmdk_timer_init(void __iomem *base) { unsigned long rate; struct clk *clk0; + mtu_base = base; clk0 = clk_get_sys("mtu0", NULL); BUG_ON(IS_ERR(clk0)); -- cgit v0.10.2 From d3e8b7569ad733c063a95dc1a51928e6e7c40652 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 11 Jan 2012 09:51:14 +0100 Subject: ARM: plat-nomadik: handle clocking properly clk_prepare() was missing from the Nomadik MTU driver, also handle errors on prepare and enable in the simplest way possible, by bugging out - we cannot start the system without time anyway. Acked-by: Alessandro Rubini Signed-off-by: Linus Walleij diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c index 46f50f2..954a862 100644 --- a/arch/arm/plat-nomadik/timer.c +++ b/arch/arm/plat-nomadik/timer.c @@ -190,8 +190,8 @@ void __init nmdk_timer_init(void __iomem *base) mtu_base = base; clk0 = clk_get_sys("mtu0", NULL); BUG_ON(IS_ERR(clk0)); - - clk_enable(clk0); + BUG_ON(clk_prepare(clk0) < 0); + BUG_ON(clk_enable(clk0) < 0); /* * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz -- cgit v0.10.2 From a3b86a6d6f5a7592192eb3fca22ae38de18f2171 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 11 Jan 2012 09:57:56 +0100 Subject: ARM: plat-nomadik: modernize MTU timer Modernize the MTU timer to rely on the clockevents core to calculate mult and shift and setup the clock event. Acked-by: Alessandro Rubini Signed-off-by: Linus Walleij diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c index 954a862..9222e55 100644 --- a/arch/arm/plat-nomadik/timer.c +++ b/arch/arm/plat-nomadik/timer.c @@ -21,12 +21,6 @@ #include /* - * Guaranteed runtime conversion range in seconds for - * the clocksource and clockevent. - */ -#define MTU_MIN_RANGE 4 - -/* * The MTU device hosts four different counters, with 4 set of * registers. These are register names. */ @@ -102,7 +96,6 @@ static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev) void nmdk_clkevt_reset(void) { if (clkevt_periodic) { - /* Timer: configure load and background-load, and fire it up */ writel(nmdk_cycle, mtu_base + MTU_LR(1)); writel(nmdk_cycle, mtu_base + MTU_BGLR(1)); @@ -120,7 +113,6 @@ void nmdk_clkevt_reset(void) static void nmdk_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) { - switch (mode) { case CLOCK_EVT_MODE_PERIODIC: clkevt_periodic = true; @@ -224,17 +216,8 @@ void __init nmdk_timer_init(void __iomem *base) setup_sched_clock(nomadik_read_sched_clock, 32, rate); #endif - /* Timer 1 is used for events */ - - clockevents_calc_mult_shift(&nmdk_clkevt, rate, MTU_MIN_RANGE); - - nmdk_clkevt.max_delta_ns = - clockevent_delta2ns(0xffffffff, &nmdk_clkevt); - nmdk_clkevt.min_delta_ns = - clockevent_delta2ns(0x00000002, &nmdk_clkevt); - nmdk_clkevt.cpumask = cpumask_of(0); - - /* Register irq and clockevents */ + /* Timer 1 is used for events, register irq and clockevents */ setup_irq(IRQ_MTU0, &nmdk_timer_irq); - clockevents_register_device(&nmdk_clkevt); + nmdk_clkevt.cpumask = cpumask_of(0); + clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU); } -- cgit v0.10.2 From d5c38b137ac8a6e3dbed13bc494d60df5b69dfc4 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 31 Jan 2012 06:40:26 -0800 Subject: sysfs: Update the name hash when renaming sysfs entries This fixes a bug introduced with sysfs name hashes where renaming a network device appears to succeed but silently makes the sysfs files for that network device inaccessible. In at least one configuration this bug has stopped networking from coming up during boot. Signed-off-by: Eric W. Biederman Tested-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index ea64d01..dd3779c 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -872,6 +872,7 @@ int sysfs_rename(struct sysfs_dirent *sd, dup_name = sd->s_name; sd->s_name = new_name; + sd->s_hash = sysfs_name_hash(sd->s_ns, sd->s_name); } /* Move to the appropriate place in the appropriate directories rbtree. */ -- cgit v0.10.2 From 4f03a2c934894f30a64d397df8c7c4de129c5b30 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Fri, 27 Jan 2012 15:55:57 -0800 Subject: drivers: hv: kvp: Add/cleanup connector defines The current KVP code carries some private connector related defines. Update connector.h to have all the KVP defines. As part of this patch get rid of some unused defines. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/hv/hv_kvp.h b/drivers/hv/hv_kvp.h index 9b765d7..c2c5bba 100644 --- a/drivers/hv/hv_kvp.h +++ b/drivers/hv/hv_kvp.h @@ -107,9 +107,6 @@ * the KVP user-mode component. */ -#define CN_KVP_VAL 0x1 /* This supports queries from the kernel */ -#define CN_KVP_USER_VAL 0x2 /* This supports queries from the user */ - enum hv_ku_op { KVP_REGISTER = 0, /* Register the user mode component */ KVP_KERNEL_GET, /* Kernel is requesting the value */ diff --git a/include/linux/connector.h b/include/linux/connector.h index 3c9c54f..7638407 100644 --- a/include/linux/connector.h +++ b/include/linux/connector.h @@ -43,6 +43,7 @@ #define CN_IDX_DRBD 0x8 #define CN_VAL_DRBD 0x1 #define CN_KVP_IDX 0x9 /* HyperV KVP */ +#define CN_KVP_VAL 0x1 /* queries from the kernel */ #define CN_NETLINK_USERS 10 /* Highest index + 1 */ diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index 11224ed..2b6a2d9 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -40,15 +40,11 @@ #include /* - * KYS: TODO. Need to register these in the kernel. * * The following definitions are shared with the in-kernel component; do not * change any of this without making the corresponding changes in * the KVP kernel component. */ -#define CN_KVP_IDX 0x9 /* MSFT KVP functionality */ -#define CN_KVP_VAL 0x1 /* This supports queries from the kernel */ -#define CN_KVP_USER_VAL 0x2 /* This supports queries from the user */ /* * KVP protocol: The user mode component first registers with the -- cgit v0.10.2 From 2939437ce8f2de07237eb2bcce29b6a699bfe799 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Fri, 27 Jan 2012 15:55:58 -0800 Subject: drivers: hv: kvp: Move the contents of hv_kvp.h to hyperv.h In preparation for consolidating all KVP related defines into a single header file that both the kernel and user level components can use, move the contents of hv_kvp.h into hyperv.h. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/hv/hv_kvp.c b/drivers/hv/hv_kvp.c index 0e8343f..4a6971e 100644 --- a/drivers/hv/hv_kvp.c +++ b/drivers/hv/hv_kvp.c @@ -28,8 +28,6 @@ #include #include -#include "hv_kvp.h" - /* diff --git a/drivers/hv/hv_kvp.h b/drivers/hv/hv_kvp.h deleted file mode 100644 index c2c5bba..0000000 --- a/drivers/hv/hv_kvp.h +++ /dev/null @@ -1,181 +0,0 @@ -/* - * An implementation of HyperV key value pair (KVP) functionality for Linux. - * - * - * Copyright (C) 2010, Novell, Inc. - * Author : K. Y. Srinivasan - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - */ -#ifndef _KVP_H -#define _KVP_H_ - -/* - * Maximum value size - used for both key names and value data, and includes - * any applicable NULL terminators. - * - * Note: This limit is somewhat arbitrary, but falls easily within what is - * supported for all native guests (back to Win 2000) and what is reasonable - * for the IC KVP exchange functionality. Note that Windows Me/98/95 are - * limited to 255 character key names. - * - * MSDN recommends not storing data values larger than 2048 bytes in the - * registry. - * - * Note: This value is used in defining the KVP exchange message - this value - * cannot be modified without affecting the message size and compatibility. - */ - -/* - * bytes, including any null terminators - */ -#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE (2048) - - -/* - * Maximum key size - the registry limit for the length of an entry name - * is 256 characters, including the null terminator - */ - -#define HV_KVP_EXCHANGE_MAX_KEY_SIZE (512) - -/* - * In Linux, we implement the KVP functionality in two components: - * 1) The kernel component which is packaged as part of the hv_utils driver - * is responsible for communicating with the host and responsible for - * implementing the host/guest protocol. 2) A user level daemon that is - * responsible for data gathering. - * - * Host/Guest Protocol: The host iterates over an index and expects the guest - * to assign a key name to the index and also return the value corresponding to - * the key. The host will have atmost one KVP transaction outstanding at any - * given point in time. The host side iteration stops when the guest returns - * an error. Microsoft has specified the following mapping of key names to - * host specified index: - * - * Index Key Name - * 0 FullyQualifiedDomainName - * 1 IntegrationServicesVersion - * 2 NetworkAddressIPv4 - * 3 NetworkAddressIPv6 - * 4 OSBuildNumber - * 5 OSName - * 6 OSMajorVersion - * 7 OSMinorVersion - * 8 OSVersion - * 9 ProcessorArchitecture - * - * The Windows host expects the Key Name and Key Value to be encoded in utf16. - * - * Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the - * data gathering functionality in a user mode daemon. The user level daemon - * is also responsible for binding the key name to the index as well. The - * kernel and user-level daemon communicate using a connector channel. - * - * The user mode component first registers with the - * the kernel component. Subsequently, the kernel component requests, data - * for the specified keys. In response to this message the user mode component - * fills in the value corresponding to the specified key. We overload the - * sequence field in the cn_msg header to define our KVP message types. - * - * - * The kernel component simply acts as a conduit for communication between the - * Windows host and the user-level daemon. The kernel component passes up the - * index received from the Host to the user-level daemon. If the index is - * valid (supported), the corresponding key as well as its - * value (both are strings) is returned. If the index is invalid - * (not supported), a NULL key string is returned. - */ - -/* - * - * The following definitions are shared with the user-mode component; do not - * change any of this without making the corresponding changes in - * the KVP user-mode component. - */ - -enum hv_ku_op { - KVP_REGISTER = 0, /* Register the user mode component */ - KVP_KERNEL_GET, /* Kernel is requesting the value */ - KVP_KERNEL_SET, /* Kernel is providing the value */ - KVP_USER_GET, /* User is requesting the value */ - KVP_USER_SET /* User is providing the value */ -}; - -struct hv_ku_msg { - __u32 kvp_index; /* Key index */ - __u8 kvp_key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; /* Key name */ - __u8 kvp_value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; /* Key value */ -}; - - - - -#ifdef __KERNEL__ - -/* - * Registry value types. - */ - -#define REG_SZ 1 - -enum hv_kvp_exchg_op { - KVP_OP_GET = 0, - KVP_OP_SET, - KVP_OP_DELETE, - KVP_OP_ENUMERATE, - KVP_OP_COUNT /* Number of operations, must be last. */ -}; - -enum hv_kvp_exchg_pool { - KVP_POOL_EXTERNAL = 0, - KVP_POOL_GUEST, - KVP_POOL_AUTO, - KVP_POOL_AUTO_EXTERNAL, - KVP_POOL_AUTO_INTERNAL, - KVP_POOL_COUNT /* Number of pools, must be last. */ -}; - -struct hv_kvp_hdr { - u8 operation; - u8 pool; -}; - -struct hv_kvp_exchg_msg_value { - u32 value_type; - u32 key_size; - u32 value_size; - u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; - u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; -}; - -struct hv_kvp_msg_enumerate { - u32 index; - struct hv_kvp_exchg_msg_value data; -}; - -struct hv_kvp_msg { - struct hv_kvp_hdr kvp_hdr; - struct hv_kvp_msg_enumerate kvp_data; -}; - -int hv_kvp_init(struct hv_util_service *); -void hv_kvp_deinit(void); -void hv_kvp_onchannelcallback(void *); - -#endif /* __KERNEL__ */ -#endif /* _KVP_H */ - diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index 55d58f2..dbb8b8e 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -28,9 +28,6 @@ #include #include -#include "hv_kvp.h" - - static void shutdown_onchannelcallback(void *context); static struct hv_util_service util_shutdown = { .util_cb = shutdown_onchannelcallback, diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 62b908e..7332b3f 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -25,6 +25,166 @@ #ifndef _HYPERV_H #define _HYPERV_H +#include + +/* + * An implementation of HyperV key value pair (KVP) functionality for Linux. + * + * + * Copyright (C) 2010, Novell, Inc. + * Author : K. Y. Srinivasan + * + */ + +/* + * Maximum value size - used for both key names and value data, and includes + * any applicable NULL terminators. + * + * Note: This limit is somewhat arbitrary, but falls easily within what is + * supported for all native guests (back to Win 2000) and what is reasonable + * for the IC KVP exchange functionality. Note that Windows Me/98/95 are + * limited to 255 character key names. + * + * MSDN recommends not storing data values larger than 2048 bytes in the + * registry. + * + * Note: This value is used in defining the KVP exchange message - this value + * cannot be modified without affecting the message size and compatibility. + */ + +/* + * bytes, including any null terminators + */ +#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE (2048) + + +/* + * Maximum key size - the registry limit for the length of an entry name + * is 256 characters, including the null terminator + */ + +#define HV_KVP_EXCHANGE_MAX_KEY_SIZE (512) + +/* + * In Linux, we implement the KVP functionality in two components: + * 1) The kernel component which is packaged as part of the hv_utils driver + * is responsible for communicating with the host and responsible for + * implementing the host/guest protocol. 2) A user level daemon that is + * responsible for data gathering. + * + * Host/Guest Protocol: The host iterates over an index and expects the guest + * to assign a key name to the index and also return the value corresponding to + * the key. The host will have atmost one KVP transaction outstanding at any + * given point in time. The host side iteration stops when the guest returns + * an error. Microsoft has specified the following mapping of key names to + * host specified index: + * + * Index Key Name + * 0 FullyQualifiedDomainName + * 1 IntegrationServicesVersion + * 2 NetworkAddressIPv4 + * 3 NetworkAddressIPv6 + * 4 OSBuildNumber + * 5 OSName + * 6 OSMajorVersion + * 7 OSMinorVersion + * 8 OSVersion + * 9 ProcessorArchitecture + * + * The Windows host expects the Key Name and Key Value to be encoded in utf16. + * + * Guest Kernel/KVP Daemon Protocol: As noted earlier, we implement all of the + * data gathering functionality in a user mode daemon. The user level daemon + * is also responsible for binding the key name to the index as well. The + * kernel and user-level daemon communicate using a connector channel. + * + * The user mode component first registers with the + * the kernel component. Subsequently, the kernel component requests, data + * for the specified keys. In response to this message the user mode component + * fills in the value corresponding to the specified key. We overload the + * sequence field in the cn_msg header to define our KVP message types. + * + * + * The kernel component simply acts as a conduit for communication between the + * Windows host and the user-level daemon. The kernel component passes up the + * index received from the Host to the user-level daemon. If the index is + * valid (supported), the corresponding key as well as its + * value (both are strings) is returned. If the index is invalid + * (not supported), a NULL key string is returned. + */ + +/* + * + * The following definitions are shared with the user-mode component; do not + * change any of this without making the corresponding changes in + * the KVP user-mode component. + */ + +enum hv_ku_op { + KVP_REGISTER = 0, /* Register the user mode component */ + KVP_KERNEL_GET, /* Kernel is requesting the value */ + KVP_KERNEL_SET, /* Kernel is providing the value */ + KVP_USER_GET, /* User is requesting the value */ + KVP_USER_SET /* User is providing the value */ +}; + +struct hv_ku_msg { + __u32 kvp_index; /* Key index */ + __u8 kvp_key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; /* Key name */ + __u8 kvp_value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; /* Key value */ +}; + + + + +#ifdef __KERNEL__ + +/* + * Registry value types. + */ + +#define REG_SZ 1 + +enum hv_kvp_exchg_op { + KVP_OP_GET = 0, + KVP_OP_SET, + KVP_OP_DELETE, + KVP_OP_ENUMERATE, + KVP_OP_COUNT /* Number of operations, must be last. */ +}; + +enum hv_kvp_exchg_pool { + KVP_POOL_EXTERNAL = 0, + KVP_POOL_GUEST, + KVP_POOL_AUTO, + KVP_POOL_AUTO_EXTERNAL, + KVP_POOL_AUTO_INTERNAL, + KVP_POOL_COUNT /* Number of pools, must be last. */ +}; + +struct hv_kvp_hdr { + u8 operation; + u8 pool; +}; + +struct hv_kvp_exchg_msg_value { + u32 value_type; + u32 key_size; + u32 value_size; + u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; + u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; +}; + +struct hv_kvp_msg_enumerate { + u32 index; + struct hv_kvp_exchg_msg_value data; +}; + +struct hv_kvp_msg { + struct hv_kvp_hdr kvp_hdr; + struct hv_kvp_msg_enumerate kvp_data; +}; + #include #include #include @@ -870,4 +1030,9 @@ struct hyperv_service_callback { extern void vmbus_prep_negotiate_resp(struct icmsg_hdr *, struct icmsg_negotiate *, u8 *); +int hv_kvp_init(struct hv_util_service *); +void hv_kvp_deinit(void); +void hv_kvp_onchannelcallback(void *); + +#endif /* __KERNEL__ */ #endif /* _HYPERV_H */ -- cgit v0.10.2 From b3012e12cdc5825f93367cc6294419e7ab1f00cc Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 30 Jan 2012 14:47:28 +0000 Subject: cpufreq/gx: Fix the compile error Someone forgot to test this one it seems. Signed-off-by: Alan Cox Acked-by: Andi Kleen Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/cpufreq/gx-suspmod.c b/drivers/cpufreq/gx-suspmod.c index 5a06c0b..456bee0 100644 --- a/drivers/cpufreq/gx-suspmod.c +++ b/drivers/cpufreq/gx-suspmod.c @@ -172,7 +172,7 @@ static struct pci_device_id gx_chipset_tbl[] __initdata = { { PCI_VDEVICE(CYRIX, PCI_DEVICE_ID_CYRIX_5510), }, { 0, }, }; -MODULE_DEVICE_TABLE(gx_chipset_tbl); +MODULE_DEVICE_TABLE(pci, gx_chipset_tbl); static void gx_write_byte(int reg, int value) { -- cgit v0.10.2 From 976a0be03a15f1c268e3f569c0ade3e7ff8ce478 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Tue, 7 Feb 2012 11:45:57 -0800 Subject: ACPI: remove duplicated lines of merging problems with acpi_processor_start When checking driver-core tree, found crazying warnings on my setups. [ 216.025849] calling acpi_processor_init+0x0/0x81 @ 1 [ 216.045332] ACPI: Requesting acpi_cpufreq [ 216.047454] Monitor-Mwait will be used to enter C-1 state [ 216.047912] Monitor-Mwait will be used to enter C-3 state [ 216.065270] ACPI: acpi_idle registered with cpuidle [ 216.068241] kobject (ffff8870364a1940): tried to init an initialized object, something is seriously wrong. [ 216.085287] Pid: 1, comm: swapper/0 Not tainted 3.3.0-rc2-tip-yh-02428-ge663840-dirty #247 [ 216.105041] Call Trace: [ 216.105192] [] kobject_init+0x33/0x83 [ 216.124880] [] kobject_init_and_add+0x23/0x57 [ 216.125158] [] cpuidle_add_sysfs+0x49/0x62 [ 216.144850] [] __cpuidle_register_device+0xe6/0x10e [ 216.145182] [] cpuidle_register_device+0x25/0x4d [ 216.164912] [] acpi_processor_power_init+0x13e/0x16c [ 216.165205] [] ? acpi_processor_get_throttling_info+0x128/0x158 [ 216.185012] [] acpi_processor_start+0x62/0x11d [ 216.204861] [] acpi_processor_add+0x1b0/0x1e7 [ 216.205144] [] acpi_device_probe+0x4e/0x11c [ 216.225063] [] really_probe+0x99/0x126 [ 216.225328] [] driver_probe_device+0x3b/0x56 [ 216.244846] [] __driver_attach+0x5f/0x82 [ 216.245101] [] ? driver_probe_device+0x56/0x56 [ 216.264668] [] bus_for_each_dev+0x5c/0x88 [ 216.264942] [] driver_attach+0x1e/0x20 [ 216.284639] [] bus_add_driver+0xca/0x21d [ 216.284903] [] ? local_clock+0xf/0x3c [ 216.304580] [] ? acpi_fan_init+0x18/0x18 [ 216.304849] [] driver_register+0x91/0xfe [ 216.324545] [] ? acpi_fan_init+0x18/0x18 [ 216.324813] [] acpi_bus_register_driver+0x43/0x45 [ 216.344563] [] acpi_processor_init+0x30/0x81 [ 216.344845] [] ? acpi_fan_init+0x18/0x18 [ 216.364590] [] do_one_initcall+0x57/0x134 [ 216.364868] [] kernel_init+0x146/0x1c0 [ 216.384512] [] kernel_thread_helper+0x4/0x10 [ 216.384819] [] ? retint_restore_args+0xe/0xe [ 216.404578] [] ? start_kernel+0x3ab/0x3ab [ 216.424530] [] ? gs_change+0xb/0xb [ 216.424793] ------------[ cut here ]------------ [ 216.425038] WARNING: at fs/sysfs/dir.c:502 sysfs_add_one+0x97/0xab() [ 216.444480] Hardware name: Sun Fire X4800 [ 216.444668] sysfs: cannot create duplicate filename '/devices/system/cpu/cpu0/cpuidle' ... It turns out acpi_processor_power_init() get called two time in acpi_processor_add and acpi_processor_start. Found several lines are duplicated in those two functions even related commit move them. The related patches are ok. Not sure how it could happen, looks like git problem. -v2: add back acpi_processor_load_module(pr) to acpi_processor_load_start Signed-off-by: Yinghai Lu Cc: Linus Torvalds Acked-by: Thomas Renninger Cc: Len Brown Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index f289d2a..2801b41 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -474,6 +474,7 @@ static __ref int acpi_processor_start(struct acpi_processor *pr) #ifdef CONFIG_CPU_FREQ acpi_processor_ppc_has_changed(pr, 0); + acpi_processor_load_module(pr); #endif acpi_processor_get_throttling_info(pr); acpi_processor_get_limit_info(pr); @@ -579,23 +580,6 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device) goto err_free_cpumask; } -#ifdef CONFIG_CPU_FREQ - acpi_processor_ppc_has_changed(pr, 0); - acpi_processor_load_module(pr); -#endif - acpi_processor_get_throttling_info(pr); - acpi_processor_get_limit_info(pr); - - if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver) - acpi_processor_power_init(pr, device); - - pr->cdev = thermal_cooling_device_register("Processor", device, - &processor_cooling_ops); - if (IS_ERR(pr->cdev)) { - result = PTR_ERR(pr->cdev); - goto err_remove_sysfs; - } - /* * Do not start hotplugged CPUs now, but when they * are onlined the first time -- cgit v0.10.2 From 59a084a70afa0678bda2a23a7bc7cc59664945c7 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Thu, 2 Feb 2012 16:56:48 -0800 Subject: drivers: hv: Cleanup the kvp related state in hyperv.h Now cleanup the hyperv.h with regards to KVP definitions. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 7332b3f..b822978 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -137,7 +137,6 @@ struct hv_ku_msg { -#ifdef __KERNEL__ /* * Registry value types. @@ -163,28 +162,30 @@ enum hv_kvp_exchg_pool { }; struct hv_kvp_hdr { - u8 operation; - u8 pool; -}; + __u8 operation; + __u8 pool; + __u16 pad; +} __attribute__((packed)); struct hv_kvp_exchg_msg_value { - u32 value_type; - u32 key_size; - u32 value_size; - u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; - u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; -}; + __u32 value_type; + __u32 key_size; + __u32 value_size; + __u8 key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; + __u8 value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; +} __attribute__((packed)); struct hv_kvp_msg_enumerate { - u32 index; + __u32 index; struct hv_kvp_exchg_msg_value data; -}; +} __attribute__((packed)); struct hv_kvp_msg { struct hv_kvp_hdr kvp_hdr; struct hv_kvp_msg_enumerate kvp_data; -}; +} __attribute__((packed)); +#ifdef __KERNEL__ #include #include #include -- cgit v0.10.2 From eab6af71f0b83a7f62b9c48be5b2c0a82a86fad3 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Thu, 2 Feb 2012 16:56:49 -0800 Subject: tools: hv: Use hyperv.h to get the KVP definitions Now use hyperv.h to get the KVP defines in the KVP user-mode code. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index 2b6a2d9..b75523c 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -34,17 +34,12 @@ #include #include #include +#include #include #include #include #include -/* - * - * The following definitions are shared with the in-kernel component; do not - * change any of this without making the corresponding changes in - * the KVP kernel component. - */ /* * KVP protocol: The user mode component first registers with the @@ -56,25 +51,8 @@ * We use this infrastructure for also supporting queries from user mode * application for state that may be maintained in the KVP kernel component. * - * XXXKYS: Have a shared header file between the user and kernel (TODO) */ -enum kvp_op { - KVP_REGISTER = 0, /* Register the user mode component*/ - KVP_KERNEL_GET, /*Kernel is requesting the value for the specified key*/ - KVP_KERNEL_SET, /*Kernel is providing the value for the specified key*/ - KVP_USER_GET, /*User is requesting the value for the specified key*/ - KVP_USER_SET /*User is providing the value for the specified key*/ -}; - -#define HV_KVP_EXCHANGE_MAX_KEY_SIZE 512 -#define HV_KVP_EXCHANGE_MAX_VALUE_SIZE 2048 - -struct hv_ku_msg { - __u32 kvp_index; - __u8 kvp_key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; /* Key name */ - __u8 kvp_value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; /* Key value */ -}; enum key_index { FullyQualifiedDomainName = 0, @@ -89,10 +67,6 @@ enum key_index { ProcessorArchitecture }; -/* - * End of shared definitions. - */ - static char kvp_send_buffer[4096]; static char kvp_recv_buffer[4096]; static struct sockaddr_nl addr; -- cgit v0.10.2 From 2640335438ca4d7b139e114dae5f0d80e740e106 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Thu, 2 Feb 2012 16:56:50 -0800 Subject: drivers: hv: kvp: Cleanup the kernel/user protocol Now, cleanup the user/kernel KVP protocol by using the same structure definition that is used for host/guest KVP protocol. This simplifies the code. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/hv/hv_kvp.c b/drivers/hv/hv_kvp.c index 4a6971e..0ef4c1f 100644 --- a/drivers/hv/hv_kvp.c +++ b/drivers/hv/hv_kvp.c @@ -71,15 +71,20 @@ kvp_register(void) { struct cn_msg *msg; + struct hv_kvp_msg *kvp_msg; + char *version; - msg = kzalloc(sizeof(*msg) + strlen(HV_DRV_VERSION) + 1 , GFP_ATOMIC); + msg = kzalloc(sizeof(*msg) + sizeof(struct hv_kvp_msg), GFP_ATOMIC); if (msg) { + kvp_msg = (struct hv_kvp_msg *)msg->data; + version = kvp_msg->body.kvp_version; msg->id.idx = CN_KVP_IDX; msg->id.val = CN_KVP_VAL; - msg->seq = KVP_REGISTER; - strcpy(msg->data, HV_DRV_VERSION); - msg->len = strlen(HV_DRV_VERSION) + 1; + + kvp_msg->kvp_hdr.operation = KVP_OP_REGISTER; + strcpy(version, HV_DRV_VERSION); + msg->len = sizeof(struct hv_kvp_msg); cn_netlink_send(msg, 0, GFP_ATOMIC); kfree(msg); } @@ -101,23 +106,24 @@ kvp_work_func(struct work_struct *dummy) static void kvp_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp) { - struct hv_ku_msg *message; + struct hv_kvp_msg *message; + struct hv_kvp_msg_enumerate *data; - message = (struct hv_ku_msg *)msg->data; - if (msg->seq == KVP_REGISTER) { + message = (struct hv_kvp_msg *)msg->data; + if (message->kvp_hdr.operation == KVP_OP_REGISTER) { pr_info("KVP: user-mode registering done.\n"); kvp_register(); } - if (msg->seq == KVP_USER_SET) { + if (message->kvp_hdr.operation == KVP_OP_ENUMERATE) { + data = &message->body.kvp_enum_data; /* * Complete the transaction by forwarding the key value * to the host. But first, cancel the timeout. */ if (cancel_delayed_work_sync(&kvp_work)) - kvp_respond_to_host(message->kvp_key, - message->kvp_value, - !strlen(message->kvp_key)); + kvp_respond_to_host(data->data.key, data->data.value, + !strlen(data->data.key)); } } @@ -125,6 +131,7 @@ static void kvp_send_key(struct work_struct *dummy) { struct cn_msg *msg; + struct hv_kvp_msg *message; int index = kvp_transaction.index; msg = kzalloc(sizeof(*msg) + sizeof(struct hv_kvp_msg) , GFP_ATOMIC); @@ -132,9 +139,11 @@ kvp_send_key(struct work_struct *dummy) if (msg) { msg->id.idx = CN_KVP_IDX; msg->id.val = CN_KVP_VAL; - msg->seq = KVP_KERNEL_GET; - ((struct hv_ku_msg *)msg->data)->kvp_index = index; - msg->len = sizeof(struct hv_ku_msg); + + message = (struct hv_kvp_msg *)msg->data; + message->kvp_hdr.operation = KVP_OP_ENUMERATE; + message->body.kvp_enum_data.index = index; + msg->len = sizeof(struct hv_kvp_msg); cn_netlink_send(msg, 0, GFP_ATOMIC); kfree(msg); } @@ -191,7 +200,7 @@ kvp_respond_to_host(char *key, char *value, int error) kvp_msg = (struct hv_kvp_msg *) &recv_buffer[sizeof(struct vmbuspipe_hdr) + sizeof(struct icmsg_hdr)]; - kvp_data = &kvp_msg->kvp_data; + kvp_data = &kvp_msg->body.kvp_enum_data; key_name = key; /* @@ -266,7 +275,7 @@ void hv_kvp_onchannelcallback(void *context) sizeof(struct vmbuspipe_hdr) + sizeof(struct icmsg_hdr)]; - kvp_data = &kvp_msg->kvp_data; + kvp_data = &kvp_msg->body.kvp_enum_data; /* * We only support the "get" operation on diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index b822978..75aee67 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -113,30 +113,6 @@ * (not supported), a NULL key string is returned. */ -/* - * - * The following definitions are shared with the user-mode component; do not - * change any of this without making the corresponding changes in - * the KVP user-mode component. - */ - -enum hv_ku_op { - KVP_REGISTER = 0, /* Register the user mode component */ - KVP_KERNEL_GET, /* Kernel is requesting the value */ - KVP_KERNEL_SET, /* Kernel is providing the value */ - KVP_USER_GET, /* User is requesting the value */ - KVP_USER_SET /* User is providing the value */ -}; - -struct hv_ku_msg { - __u32 kvp_index; /* Key index */ - __u8 kvp_key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; /* Key name */ - __u8 kvp_value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; /* Key value */ -}; - - - - /* * Registry value types. @@ -149,6 +125,7 @@ enum hv_kvp_exchg_op { KVP_OP_SET, KVP_OP_DELETE, KVP_OP_ENUMERATE, + KVP_OP_REGISTER, KVP_OP_COUNT /* Number of operations, must be last. */ }; @@ -182,7 +159,10 @@ struct hv_kvp_msg_enumerate { struct hv_kvp_msg { struct hv_kvp_hdr kvp_hdr; - struct hv_kvp_msg_enumerate kvp_data; + union { + struct hv_kvp_msg_enumerate kvp_enum_data; + char kvp_version[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; + } body; } __attribute__((packed)); #ifdef __KERNEL__ diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c index b75523c..4ebf703 100644 --- a/tools/hv/hv_kvp_daemon.c +++ b/tools/hv/hv_kvp_daemon.c @@ -302,7 +302,7 @@ int main(void) struct pollfd pfd; struct nlmsghdr *incoming_msg; struct cn_msg *incoming_cn_msg; - struct hv_ku_msg *hv_msg; + struct hv_kvp_msg *hv_msg; char *p; char *key_value; char *key_name; @@ -340,9 +340,11 @@ int main(void) message = (struct cn_msg *)kvp_send_buffer; message->id.idx = CN_KVP_IDX; message->id.val = CN_KVP_VAL; - message->seq = KVP_REGISTER; + + hv_msg = (struct hv_kvp_msg *)message->data; + hv_msg->kvp_hdr.operation = KVP_OP_REGISTER; message->ack = 0; - message->len = 0; + message->len = sizeof(struct hv_kvp_msg); len = netlink_send(fd, message); if (len < 0) { @@ -368,14 +370,15 @@ int main(void) incoming_msg = (struct nlmsghdr *)kvp_recv_buffer; incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg); + hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data; - switch (incoming_cn_msg->seq) { - case KVP_REGISTER: + switch (hv_msg->kvp_hdr.operation) { + case KVP_OP_REGISTER: /* * Driver is registering with us; stash away the version * information. */ - p = (char *)incoming_cn_msg->data; + p = (char *)hv_msg->body.kvp_version; lic_version = malloc(strlen(p) + 1); if (lic_version) { strcpy(lic_version, p); @@ -386,17 +389,15 @@ int main(void) } continue; - case KVP_KERNEL_GET: - break; default: - continue; + break; } - hv_msg = (struct hv_ku_msg *)incoming_cn_msg->data; - key_name = (char *)hv_msg->kvp_key; - key_value = (char *)hv_msg->kvp_value; + hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data; + key_name = (char *)hv_msg->body.kvp_enum_data.data.key; + key_value = (char *)hv_msg->body.kvp_enum_data.data.value; - switch (hv_msg->kvp_index) { + switch (hv_msg->body.kvp_enum_data.index) { case FullyQualifiedDomainName: kvp_get_domain_name(key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); @@ -456,9 +457,8 @@ int main(void) incoming_cn_msg->id.idx = CN_KVP_IDX; incoming_cn_msg->id.val = CN_KVP_VAL; - incoming_cn_msg->seq = KVP_USER_SET; incoming_cn_msg->ack = 0; - incoming_cn_msg->len = sizeof(struct hv_ku_msg); + incoming_cn_msg->len = sizeof(struct hv_kvp_msg); len = netlink_send(fd, incoming_cn_msg); if (len < 0) { -- cgit v0.10.2 From 14c1bf8a8920f36f6e0603a2ff920b48eec14387 Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Thu, 2 Feb 2012 16:56:51 -0800 Subject: drivers: hv: Increase the number of VCPUs supported in the guest The current code arbirarily limited the number of CPUs the guest could have. Change that so that we can support the maximum number of CPUs the guest can support. While we use NR_CPUS to size the per-cpu state all we are allocating based on NR_CPUS are the pointers to per-cpu state that will be allocatted in the context of the initializing CPU. This patch triggers a checkpatch warning for the usage of NR_CPU and since all we are allocating a couple of pointers per CPU, it should be ok. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index 12aa97f..15956bd 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -155,9 +155,9 @@ int hv_init(void) union hv_x64_msr_hypercall_contents hypercall_msr; void *virtaddr = NULL; - memset(hv_context.synic_event_page, 0, sizeof(void *) * MAX_NUM_CPUS); + memset(hv_context.synic_event_page, 0, sizeof(void *) * NR_CPUS); memset(hv_context.synic_message_page, 0, - sizeof(void *) * MAX_NUM_CPUS); + sizeof(void *) * NR_CPUS); if (!query_hypervisor_presence()) goto cleanup; diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 6d7d286..699f0d8 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -457,7 +457,6 @@ static const uuid_le VMBUS_SERVICE_ID = { }, }; -#define MAX_NUM_CPUS 32 struct hv_input_signal_event_buffer { @@ -483,8 +482,8 @@ struct hv_context { /* 8-bytes aligned of the buffer above */ struct hv_input_signal_event *signal_event_param; - void *synic_message_page[MAX_NUM_CPUS]; - void *synic_event_page[MAX_NUM_CPUS]; + void *synic_message_page[NR_CPUS]; + void *synic_event_page[NR_CPUS]; }; extern struct hv_context hv_context; -- cgit v0.10.2 From e250b34e57888ebe829a0b89cfa8ad303ad5ae74 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 4 Feb 2012 16:33:55 +0000 Subject: w1: Use linux/gpio.h rather than asm/gpio.h Direct inclusion of the asm header has long been deprecated by the introduction of gpiolib. Signed-off-by: Mark Brown Acked-by: Evgeniy Polyakov Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c index fcbe742..df600d1 100644 --- a/drivers/w1/masters/w1-gpio.c +++ b/drivers/w1/masters/w1-gpio.c @@ -13,12 +13,11 @@ #include #include #include +#include #include "../w1.h" #include "../w1_int.h" -#include - static void w1_gpio_write_bit_dir(void *data, u8 bit) { struct w1_gpio_platform_data *pdata = data; -- cgit v0.10.2 From aad4f4000cecec9c80b5f9aff91043dc104d61a0 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 18 Nov 2011 10:12:49 -0800 Subject: PCI: Add helper macro for pci_register_driver boilerplate This patch introduces the module_pci_driver macro which is a convenience macro for PCI driver modules similar to module_platform_driver. It is intended to be used by drivers which init/exit section does nothing but register/unregister the PCI driver. By using this macro it is possible to eliminate a few lines of boilerplate code per PCI driver. Based on work done by Lars-Peter Clausen for other busses (i2c and spi). Cc: Lars-Peter Clausen Signed-off-by: Greg Kroah-Hartman Acked-by: Jesse Barnes Signed-off-by: Greg Kroah-Hartman diff --git a/include/linux/pci.h b/include/linux/pci.h index a16b1df..d4afd70 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -946,6 +946,19 @@ int __must_check __pci_register_driver(struct pci_driver *, struct module *, __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) void pci_unregister_driver(struct pci_driver *dev); + +/** + * module_pci_driver() - Helper macro for registering a PCI driver + * @__pci_driver: pci_driver struct + * + * Helper macro for PCI drivers which do not do anything special in module + * init/exit. This eliminates a lot of boilerplate. Each module may only + * use this macro once, and calling it replaces module_init() and module_exit() + */ +#define module_pci_driver(__pci_driver) \ + module_driver(__pci_driver, pci_register_driver, \ + pci_unregister_driver) + void pci_remove_behind_bridge(struct pci_dev *dev); struct pci_driver *pci_dev_driver(const struct pci_dev *dev); int pci_add_dynid(struct pci_driver *drv, -- cgit v0.10.2 From 956563362be8ac7ce084b00825168be1adfb29ee Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 18 Nov 2011 10:14:24 -0800 Subject: DWC3: use module_pci_driver This cuts down on the boilerplate code. Cc: Lars-Peter Clausen Signed-off-by: Greg Kroah-Hartman Acked-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 64e1f7c..c68e427 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -171,14 +171,4 @@ MODULE_AUTHOR("Felipe Balbi "); MODULE_LICENSE("Dual BSD/GPL"); MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer"); -static int __devinit dwc3_pci_init(void) -{ - return pci_register_driver(&dwc3_pci_driver); -} -module_init(dwc3_pci_init); - -static void __exit dwc3_pci_exit(void) -{ - pci_unregister_driver(&dwc3_pci_driver); -} -module_exit(dwc3_pci_exit); +module_pci_driver(dwc3_pci_driver); -- cgit v0.10.2 From 74d1d82cdaaec727f5072eb1c9f49b7e920e076f Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Feb 2012 11:22:22 -0800 Subject: drivers/base: add bus for System-on-Chip devices Traditionally, any System-on-Chip based platform creates a flat list of platform_devices directly under /sys/devices/platform. In order to give these some better structure, this introduces a new bus type for soc_devices that are registered with the new soc_device_register() function. All devices that are on the same chip should then be registered as child devices of the soc device. The soc bus also exports a few standardised device attributes which allow user space to query the specific type of soc. Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index 7be9f79..9aa618a 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -176,6 +176,9 @@ config GENERIC_CPU_DEVICES bool default n +config SOC_BUS + bool + source "drivers/base/regmap/Kconfig" config DMA_SHARED_BUFFER diff --git a/drivers/base/Makefile b/drivers/base/Makefile index 610f999..b6d1b9c 100644 --- a/drivers/base/Makefile +++ b/drivers/base/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_MODULES) += module.o endif obj-$(CONFIG_SYS_HYPERVISOR) += hypervisor.o obj-$(CONFIG_REGMAP) += regmap/ +obj-$(CONFIG_SOC_BUS) += soc.o ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG diff --git a/drivers/base/soc.c b/drivers/base/soc.c new file mode 100644 index 0000000..05f1503 --- /dev/null +++ b/drivers/base/soc.c @@ -0,0 +1,183 @@ +/* + * Copyright (C) ST-Ericsson SA 2011 + * + * Author: Lee Jones for ST-Ericsson. + * License terms: GNU General Public License (GPL), version 2 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static DEFINE_IDR(soc_ida); +static DEFINE_SPINLOCK(soc_lock); + +static ssize_t soc_info_get(struct device *dev, + struct device_attribute *attr, + char *buf); + +struct soc_device { + struct device dev; + struct soc_device_attribute *attr; + int soc_dev_num; +}; + +static struct bus_type soc_bus_type = { + .name = "soc", +}; + +static DEVICE_ATTR(machine, S_IRUGO, soc_info_get, NULL); +static DEVICE_ATTR(family, S_IRUGO, soc_info_get, NULL); +static DEVICE_ATTR(soc_id, S_IRUGO, soc_info_get, NULL); +static DEVICE_ATTR(revision, S_IRUGO, soc_info_get, NULL); + +struct device *soc_device_to_device(struct soc_device *soc_dev) +{ + return &soc_dev->dev; +} + +static mode_t soc_attribute_mode(struct kobject *kobj, + struct attribute *attr, + int index) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct soc_device *soc_dev = container_of(dev, struct soc_device, dev); + + if ((attr == &dev_attr_machine.attr) + && (soc_dev->attr->machine != NULL)) + return attr->mode; + if ((attr == &dev_attr_family.attr) + && (soc_dev->attr->family != NULL)) + return attr->mode; + if ((attr == &dev_attr_revision.attr) + && (soc_dev->attr->revision != NULL)) + return attr->mode; + if ((attr == &dev_attr_soc_id.attr) + && (soc_dev->attr->soc_id != NULL)) + return attr->mode; + + /* Unknown or unfilled attribute. */ + return 0; +} + +static ssize_t soc_info_get(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct soc_device *soc_dev = container_of(dev, struct soc_device, dev); + + if (attr == &dev_attr_machine) + return sprintf(buf, "%s\n", soc_dev->attr->machine); + if (attr == &dev_attr_family) + return sprintf(buf, "%s\n", soc_dev->attr->family); + if (attr == &dev_attr_revision) + return sprintf(buf, "%s\n", soc_dev->attr->revision); + if (attr == &dev_attr_soc_id) + return sprintf(buf, "%s\n", soc_dev->attr->soc_id); + + return -EINVAL; + +} + +static struct attribute *soc_attr[] = { + &dev_attr_machine.attr, + &dev_attr_family.attr, + &dev_attr_soc_id.attr, + &dev_attr_revision.attr, + NULL, +}; + +static const struct attribute_group soc_attr_group = { + .attrs = soc_attr, + .is_visible = soc_attribute_mode, +}; + +static const struct attribute_group *soc_attr_groups[] = { + &soc_attr_group, + NULL, +}; + +static void soc_release(struct device *dev) +{ + struct soc_device *soc_dev = container_of(dev, struct soc_device, dev); + + kfree(soc_dev); +} + +struct soc_device *soc_device_register(struct soc_device_attribute *soc_dev_attr) +{ + struct soc_device *soc_dev; + int ret; + + soc_dev = kzalloc(sizeof(*soc_dev), GFP_KERNEL); + if (!soc_dev) { + ret = -ENOMEM; + goto out1; + } + + /* Fetch a unique (reclaimable) SOC ID. */ + do { + if (!ida_pre_get(&soc_ida, GFP_KERNEL)) { + ret = -ENOMEM; + goto out2; + } + + spin_lock(&soc_lock); + ret = ida_get_new(&soc_ida, &soc_dev->soc_dev_num); + spin_unlock(&soc_lock); + + } while (ret == -EAGAIN); + + if (ret) + goto out2; + + soc_dev->attr = soc_dev_attr; + soc_dev->dev.bus = &soc_bus_type; + soc_dev->dev.groups = soc_attr_groups; + soc_dev->dev.release = soc_release; + + dev_set_name(&soc_dev->dev, "soc%d", soc_dev->soc_dev_num); + + ret = device_register(&soc_dev->dev); + if (ret) + goto out3; + + return soc_dev; + +out3: + ida_remove(&soc_ida, soc_dev->soc_dev_num); +out2: + kfree(soc_dev); +out1: + return ERR_PTR(ret); +} + +/* Ensure soc_dev->attr is freed prior to calling soc_device_unregister. */ +void soc_device_unregister(struct soc_device *soc_dev) +{ + ida_remove(&soc_ida, soc_dev->soc_dev_num); + + device_unregister(&soc_dev->dev); +} + +static int __init soc_bus_register(void) +{ + spin_lock_init(&soc_lock); + + return bus_register(&soc_bus_type); +} +core_initcall(soc_bus_register); + +static void __exit soc_bus_unregister(void) +{ + ida_destroy(&soc_ida); + + bus_unregister(&soc_bus_type); +} +module_exit(soc_bus_unregister); diff --git a/include/linux/sys_soc.h b/include/linux/sys_soc.h new file mode 100644 index 0000000..2739ccb --- /dev/null +++ b/include/linux/sys_soc.h @@ -0,0 +1,37 @@ +/* + * Copyright (C) ST-Ericsson SA 2011 + * Author: Lee Jones for ST-Ericsson. + * License terms: GNU General Public License (GPL), version 2 + */ +#ifndef __SOC_BUS_H +#define __SOC_BUS_H + +#include + +struct soc_device_attribute { + const char *machine; + const char *family; + const char *revision; + const char *soc_id; +}; + +/** + * soc_device_register - register SoC as a device + * @soc_plat_dev_attr: Attributes passed from platform to be attributed to a SoC + */ +struct soc_device *soc_device_register( + struct soc_device_attribute *soc_plat_dev_attr); + +/** + * soc_device_unregister - unregister SoC device + * @dev: SoC device to be unregistered + */ +void soc_device_unregister(struct soc_device *soc_dev); + +/** + * soc_device_to_device - helper function to fetch struct device + * @soc: Previously registered SoC device container + */ +struct device *soc_device_to_device(struct soc_device *soc); + +#endif /* __SOC_BUS_H */ -- cgit v0.10.2 From da5a70f3519fd6f73ece3eea261a861c9a4d6bbd Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Feb 2012 11:22:23 -0800 Subject: Documentation: add information for new sysfs soc bus functionality This change applies the required documentation for each new attribute recenty added by the new System-On-Chip (SoC) information export bus driver. Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman diff --git a/Documentation/ABI/testing/sysfs-devices-soc b/Documentation/ABI/testing/sysfs-devices-soc new file mode 100644 index 0000000..6d9cc25 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-devices-soc @@ -0,0 +1,58 @@ +What: /sys/devices/socX +Date: January 2012 +contact: Lee Jones +Description: + The /sys/devices/ directory contains a sub-directory for each + System-on-Chip (SoC) device on a running platform. Information + regarding each SoC can be obtained by reading sysfs files. This + functionality is only available if implemented by the platform. + + The directory created for each SoC will also house information + about devices which are commonly contained in /sys/devices/platform. + It has been agreed that if an SoC device exists, its supported + devices would be better suited to appear as children of that SoC. + +What: /sys/devices/socX/machine +Date: January 2012 +contact: Lee Jones +Description: + Read-only attribute common to all SoCs. Contains the SoC machine + name (e.g. Ux500). + +What: /sys/devices/socX/family +Date: January 2012 +contact: Lee Jones +Description: + Read-only attribute common to all SoCs. Contains SoC family name + (e.g. DB8500). + +What: /sys/devices/socX/soc_id +Date: January 2012 +contact: Lee Jones +Description: + Read-only attribute supported by most SoCs. In the case of + ST-Ericsson's chips this contains the SoC serial number. + +What: /sys/devices/socX/revision +Date: January 2012 +contact: Lee Jones +Description: + Read-only attribute supported by most SoCs. Contains the SoC's + manufacturing revision number. + +What: /sys/devices/socX/process +Date: January 2012 +contact: Lee Jones +Description: + Read-only attribute supported ST-Ericsson's silicon. Contains the + the process by which the silicon chip was manufactured. + +What: /sys/bus/soc +Date: January 2012 +contact: Lee Jones +Description: + The /sys/bus/soc/ directory contains the usual sub-folders + expected under most buses. /sys/bus/soc/devices is of particular + interest, as it contains a symlink for each SoC device found on + the system. Each symlink points back into the aforementioned + /sys/devices/socX devices. -- cgit v0.10.2 From 18403424c4fe5bac509bf52343f5d5407d45ee3a Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Feb 2012 11:22:21 -0800 Subject: ARM: ux500: pass parent pointer to each platform device This patch provides a means for any device within ux500 platform code to allocate its own parent. This is particularly prudent with the introduction of /sys/devices/socX, as a device can now proclaim to be integral part of an SoC, rather than a more generic platform device. Latter patches make good use of this functionality. Signed-off-by: Lee Jones Acked-by: Linus Walleij Signed-off-by: Arnd Bergmann diff --git a/arch/arm/mach-ux500/board-mop500-sdi.c b/arch/arm/mach-ux500/board-mop500-sdi.c index 5dde4d4..479ebe0 100644 --- a/arch/arm/mach-ux500/board-mop500-sdi.c +++ b/arch/arm/mach-ux500/board-mop500-sdi.c @@ -104,7 +104,7 @@ static struct mmci_platform_data mop500_sdi0_data = { #endif }; -static void sdi0_configure(void) +static void sdi0_configure(struct device *parent) { int ret; @@ -123,15 +123,15 @@ static void sdi0_configure(void) gpio_direction_output(sdi0_en, 1); /* Add the device, force v2 to subrevision 1 */ - db8500_add_sdi0(&mop500_sdi0_data, U8500_SDI_V2_PERIPHID); + db8500_add_sdi0(parent, &mop500_sdi0_data, U8500_SDI_V2_PERIPHID); } -void mop500_sdi_tc35892_init(void) +void mop500_sdi_tc35892_init(struct device *parent) { mop500_sdi0_data.gpio_cd = GPIO_SDMMC_CD; sdi0_en = GPIO_SDMMC_EN; sdi0_vsel = GPIO_SDMMC_1V8_3V_SEL; - sdi0_configure(); + sdi0_configure(parent); } /* @@ -246,12 +246,13 @@ static struct mmci_platform_data mop500_sdi4_data = { #endif }; -void __init mop500_sdi_init(void) +void __init mop500_sdi_init(struct device *parent) { /* PoP:ed eMMC */ - db8500_add_sdi2(&mop500_sdi2_data, U8500_SDI_V2_PERIPHID); + db8500_add_sdi2(parent, &mop500_sdi2_data, U8500_SDI_V2_PERIPHID); /* On-board eMMC */ - db8500_add_sdi4(&mop500_sdi4_data, U8500_SDI_V2_PERIPHID); + db8500_add_sdi4(parent, &mop500_sdi4_data, U8500_SDI_V2_PERIPHID); + /* * On boards with the TC35892 GPIO expander, sdi0 will finally * be added when the TC35892 initializes and calls @@ -259,31 +260,31 @@ void __init mop500_sdi_init(void) */ } -void __init snowball_sdi_init(void) +void __init snowball_sdi_init(struct device *parent) { /* On Snowball MMC_CAP_SD_HIGHSPEED isn't supported (Hardware issue?) */ mop500_sdi0_data.capabilities &= ~MMC_CAP_SD_HIGHSPEED; /* On-board eMMC */ - db8500_add_sdi4(&mop500_sdi4_data, U8500_SDI_V2_PERIPHID); + db8500_add_sdi4(parent, &mop500_sdi4_data, U8500_SDI_V2_PERIPHID); /* External Micro SD slot */ mop500_sdi0_data.gpio_cd = SNOWBALL_SDMMC_CD_GPIO; mop500_sdi0_data.cd_invert = true; sdi0_en = SNOWBALL_SDMMC_EN_GPIO; sdi0_vsel = SNOWBALL_SDMMC_1V8_3V_GPIO; - sdi0_configure(); + sdi0_configure(parent); } -void __init hrefv60_sdi_init(void) +void __init hrefv60_sdi_init(struct device *parent) { /* PoP:ed eMMC */ - db8500_add_sdi2(&mop500_sdi2_data, U8500_SDI_V2_PERIPHID); + db8500_add_sdi2(parent, &mop500_sdi2_data, U8500_SDI_V2_PERIPHID); /* On-board eMMC */ - db8500_add_sdi4(&mop500_sdi4_data, U8500_SDI_V2_PERIPHID); + db8500_add_sdi4(parent, &mop500_sdi4_data, U8500_SDI_V2_PERIPHID); /* External Micro SD slot */ mop500_sdi0_data.gpio_cd = HREFV60_SDMMC_CD_GPIO; sdi0_en = HREFV60_SDMMC_EN_GPIO; sdi0_vsel = HREFV60_SDMMC_1V8_3V_GPIO; - sdi0_configure(); + sdi0_configure(parent); /* WLAN SDIO channel */ - db8500_add_sdi1(&mop500_sdi1_data, U8500_SDI_V2_PERIPHID); + db8500_add_sdi1(parent, &mop500_sdi1_data, U8500_SDI_V2_PERIPHID); } diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 5c00712..f9ce2a1 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -226,7 +226,12 @@ static struct tps6105x_platform_data mop500_tps61052_data = { static void mop500_tc35892_init(struct tc3589x *tc3589x, unsigned int base) { - mop500_sdi_tc35892_init(); + struct device *parent = NULL; +#if 0 + /* FIXME: Is the sdi actually part of tc3589x? */ + parent = tc3589x->dev; +#endif + mop500_sdi_tc35892_init(parent); } static struct tc3589x_gpio_platform_data mop500_tc35892_gpio_data = { @@ -353,12 +358,12 @@ U8500_I2C_CONTROLLER(1, 0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST); U8500_I2C_CONTROLLER(2, 0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST); U8500_I2C_CONTROLLER(3, 0xe, 1, 8, 100000, 200, I2C_FREQ_MODE_FAST); -static void __init mop500_i2c_init(void) +static void __init mop500_i2c_init(struct device *parent) { - db8500_add_i2c0(&u8500_i2c0_data); - db8500_add_i2c1(&u8500_i2c1_data); - db8500_add_i2c2(&u8500_i2c2_data); - db8500_add_i2c3(&u8500_i2c3_data); + db8500_add_i2c0(parent, &u8500_i2c0_data); + db8500_add_i2c1(parent, &u8500_i2c1_data); + db8500_add_i2c2(parent, &u8500_i2c2_data); + db8500_add_i2c3(parent, &u8500_i2c3_data); } static struct gpio_keys_button mop500_gpio_keys[] = { @@ -451,9 +456,9 @@ static struct pl022_ssp_controller ssp0_platform_data = { .num_chipselect = 5, }; -static void __init mop500_spi_init(void) +static void __init mop500_spi_init(struct device *parent) { - db8500_add_ssp0(&ssp0_platform_data); + db8500_add_ssp0(parent, &ssp0_platform_data); } #ifdef CONFIG_STE_DMA40 @@ -587,11 +592,11 @@ static struct amba_pl011_data uart2_plat = { #endif }; -static void __init mop500_uart_init(void) +static void __init mop500_uart_init(struct device *parent) { - db8500_add_uart0(&uart0_plat); - db8500_add_uart1(&uart1_plat); - db8500_add_uart2(&uart2_plat); + db8500_add_uart0(parent, &uart0_plat); + db8500_add_uart1(parent, &uart1_plat); + db8500_add_uart2(parent, &uart2_plat); } static struct platform_device *snowball_platform_devs[] __initdata = { @@ -603,21 +608,22 @@ static struct platform_device *snowball_platform_devs[] __initdata = { static void __init mop500_init_machine(void) { + struct device *parent = NULL; int i2c0_devs; mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR; - u8500_init_devices(); + parent = u8500_init_devices(); mop500_pins_init(); platform_add_devices(mop500_platform_devs, ARRAY_SIZE(mop500_platform_devs)); - mop500_i2c_init(); - mop500_sdi_init(); - mop500_spi_init(); - mop500_uart_init(); + mop500_i2c_init(parent); + mop500_sdi_init(parent); + mop500_spi_init(parent); + mop500_uart_init(parent); i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices); @@ -631,19 +637,20 @@ static void __init mop500_init_machine(void) static void __init snowball_init_machine(void) { + struct device *parent = NULL; int i2c0_devs; - u8500_init_devices(); + parent = u8500_init_devices(); snowball_pins_init(); platform_add_devices(snowball_platform_devs, ARRAY_SIZE(snowball_platform_devs)); - mop500_i2c_init(); - snowball_sdi_init(); - mop500_spi_init(); - mop500_uart_init(); + mop500_i2c_init(parent); + snowball_sdi_init(parent); + mop500_spi_init(parent); + mop500_uart_init(parent); i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices); i2c_register_board_info(0, mop500_i2c0_devices, i2c0_devs); @@ -656,6 +663,7 @@ static void __init snowball_init_machine(void) static void __init hrefv60_init_machine(void) { + struct device *parent = NULL; int i2c0_devs; /* @@ -665,17 +673,17 @@ static void __init hrefv60_init_machine(void) */ mop500_gpio_keys[0].gpio = HREFV60_PROX_SENSE_GPIO; - u8500_init_devices(); + parent = u8500_init_devices(); hrefv60_pins_init(); platform_add_devices(mop500_platform_devs, ARRAY_SIZE(mop500_platform_devs)); - mop500_i2c_init(); - hrefv60_sdi_init(); - mop500_spi_init(); - mop500_uart_init(); + mop500_i2c_init(parent); + hrefv60_sdi_init(parent); + mop500_spi_init(parent); + mop500_uart_init(parent); i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices); diff --git a/arch/arm/mach-ux500/board-mop500.h b/arch/arm/mach-ux500/board-mop500.h index f926d3d..3d594c2 100644 --- a/arch/arm/mach-ux500/board-mop500.h +++ b/arch/arm/mach-ux500/board-mop500.h @@ -75,10 +75,10 @@ struct i2c_board_info; -extern void mop500_sdi_init(void); -extern void snowball_sdi_init(void); -extern void hrefv60_sdi_init(void); -extern void mop500_sdi_tc35892_init(void); +extern void mop500_sdi_init(struct device *parent); +extern void snowball_sdi_init(struct device *parent); +extern void hrefv60_sdi_init(struct device *parent); +extern void mop500_sdi_tc35892_init(struct device *parent); void __init mop500_u8500uib_init(void); void __init mop500_stuib_init(void); void __init mop500_pins_init(void); diff --git a/arch/arm/mach-ux500/board-u5500-sdi.c b/arch/arm/mach-ux500/board-u5500-sdi.c index 63c3f80..836112e 100644 --- a/arch/arm/mach-ux500/board-u5500-sdi.c +++ b/arch/arm/mach-ux500/board-u5500-sdi.c @@ -66,9 +66,9 @@ static struct mmci_platform_data u5500_sdi0_data = { #endif }; -void __init u5500_sdi_init(void) +void __init u5500_sdi_init(struct device *parent) { nmk_config_pins(u5500_sdi_pins, ARRAY_SIZE(u5500_sdi_pins)); - db5500_add_sdi0(&u5500_sdi0_data); + db5500_add_sdi0(parent, &u5500_sdi0_data); } diff --git a/arch/arm/mach-ux500/board-u5500.c b/arch/arm/mach-ux500/board-u5500.c index 9de9e9c..d7a9596 100644 --- a/arch/arm/mach-ux500/board-u5500.c +++ b/arch/arm/mach-ux500/board-u5500.c @@ -97,9 +97,9 @@ static struct i2c_board_info __initdata u5500_i2c2_devices[] = { }, }; -static void __init u5500_i2c_init(void) +static void __init u5500_i2c_init(struct device *parent) { - db5500_add_i2c2(&u5500_i2c2_data); + db5500_add_i2c2(parent, &u5500_i2c2_data); i2c_register_board_info(2, ARRAY_AND_SIZE(u5500_i2c2_devices)); } @@ -126,20 +126,23 @@ static struct platform_device *u5500_platform_devices[] __initdata = { &ab5500_device, }; -static void __init u5500_uart_init(void) +static void __init u5500_uart_init(struct device *parent) { - db5500_add_uart0(NULL); - db5500_add_uart1(NULL); - db5500_add_uart2(NULL); + db5500_add_uart0(parent, NULL); + db5500_add_uart1(parent, NULL); + db5500_add_uart2(parent, NULL); } static void __init u5500_init_machine(void) { - u5500_init_devices(); + struct device *parent = NULL; + + parent = u5500_init_devices(); nmk_config_pins(u5500_pins, ARRAY_SIZE(u5500_pins)); - u5500_i2c_init(); - u5500_sdi_init(); - u5500_uart_init(); + + u5500_i2c_init(parent); + u5500_sdi_init(parent); + u5500_uart_init(parent); platform_add_devices(u5500_platform_devices, ARRAY_SIZE(u5500_platform_devices)); diff --git a/arch/arm/mach-ux500/cpu-db5500.c b/arch/arm/mach-ux500/cpu-db5500.c index 18aa5c05..c402fd6 100644 --- a/arch/arm/mach-ux500/cpu-db5500.c +++ b/arch/arm/mach-ux500/cpu-db5500.c @@ -147,13 +147,13 @@ static resource_size_t __initdata db5500_gpio_base[] = { U5500_GPIOBANK7_BASE, }; -static void __init db5500_add_gpios(void) +static void __init db5500_add_gpios(struct device *parent) { struct nmk_gpio_platform_data pdata = { /* No custom data yet */ }; - dbx500_add_gpios(ARRAY_AND_SIZE(db5500_gpio_base), + dbx500_add_gpios(parent, ARRAY_AND_SIZE(db5500_gpio_base), IRQ_DB5500_GPIO0, &pdata); } @@ -212,14 +212,18 @@ static int usb_db5500_tx_dma_cfg[] = { DB5500_DMA_DEV38_USB_OTG_OEP_8 }; -void __init u5500_init_devices(void) +struct device* __init u5500_init_devices(void) { - db5500_add_gpios(); + /* FIXME: First parameter to be a real parent. */ + db5500_add_gpios(NULL); db5500_pmu_init(); - db5500_dma_init(); - db5500_add_rtc(); - db5500_add_usb(usb_db5500_rx_dma_cfg, usb_db5500_tx_dma_cfg); + db5500_dma_init(NULL); + db5500_add_rtc(NULL); + db5500_add_usb(NULL, usb_db5500_rx_dma_cfg, usb_db5500_tx_dma_cfg); platform_add_devices(db5500_platform_devs, ARRAY_SIZE(db5500_platform_devs)); + + /* FIXME: Return value to be a real parent. */ + return NULL; } diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index 7176ee7..1e8a2cb 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -132,13 +132,13 @@ static resource_size_t __initdata db8500_gpio_base[] = { U8500_GPIOBANK8_BASE, }; -static void __init db8500_add_gpios(void) +static void __init db8500_add_gpios(struct device *parent) { struct nmk_gpio_platform_data pdata = { .supports_sleepmode = true, }; - dbx500_add_gpios(ARRAY_AND_SIZE(db8500_gpio_base), + dbx500_add_gpios(parent, ARRAY_AND_SIZE(db8500_gpio_base), IRQ_DB8500_GPIO0, &pdata); } @@ -167,14 +167,15 @@ static int usb_db8500_tx_dma_cfg[] = { /* * This function is called from the board init */ -void __init u8500_init_devices(void) +struct device* __init u8500_init_devices(void) { - db8500_add_rtc(); - db8500_add_gpios(); - db8500_add_usb(usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg); + db8500_add_rtc(NULL); + db8500_add_gpios(NULL); + db8500_add_usb(NULL, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg); platform_device_register_simple("cpufreq-u8500", -1, NULL, 0); platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); - return ; + /* FIXME: Return value to be a real parent. */ + return NULL; } diff --git a/arch/arm/mach-ux500/devices-common.c b/arch/arm/mach-ux500/devices-common.c index c563e54..96be248 100644 --- a/arch/arm/mach-ux500/devices-common.c +++ b/arch/arm/mach-ux500/devices-common.c @@ -20,8 +20,9 @@ #include "devices-common.h" struct amba_device * -dbx500_add_amba_device(const char *name, resource_size_t base, - int irq, void *pdata, unsigned int periphid) +dbx500_add_amba_device(struct device *parent, const char *name, + resource_size_t base, int irq, void *pdata, + unsigned int periphid) { struct amba_device *dev; int ret; @@ -109,7 +110,7 @@ dbx500_add_platform_device_4k1irq(const char *name, int id, } static struct platform_device * -dbx500_add_gpio(int id, resource_size_t addr, int irq, +dbx500_add_gpio(struct device *parent, int id, resource_size_t addr, int irq, struct nmk_gpio_platform_data *pdata) { struct resource resources[] = { @@ -130,8 +131,8 @@ dbx500_add_gpio(int id, resource_size_t addr, int irq, pdata, sizeof(*pdata)); } -void dbx500_add_gpios(resource_size_t *base, int num, int irq, - struct nmk_gpio_platform_data *pdata) +void dbx500_add_gpios(struct device *parent, resource_size_t *base, int num, + int irq, struct nmk_gpio_platform_data *pdata) { int first = 0; int i; @@ -141,6 +142,6 @@ void dbx500_add_gpios(resource_size_t *base, int num, int irq, pdata->first_irq = NOMADIK_GPIO_TO_IRQ(first); pdata->num_gpio = 32; - dbx500_add_gpio(i, base[i], irq, pdata); + dbx500_add_gpio(parent, i, base[i], irq, pdata); } } diff --git a/arch/arm/mach-ux500/devices-common.h b/arch/arm/mach-ux500/devices-common.h index 7825705..f8adff8 100644 --- a/arch/arm/mach-ux500/devices-common.h +++ b/arch/arm/mach-ux500/devices-common.h @@ -9,7 +9,7 @@ #define __DEVICES_COMMON_H extern struct amba_device * -dbx500_add_amba_device(const char *name, resource_size_t base, +dbx500_add_amba_device(struct device *parent, const char *name, resource_size_t base, int irq, void *pdata, unsigned int periphid); extern struct platform_device * @@ -20,43 +20,46 @@ dbx500_add_platform_device_4k1irq(const char *name, int id, struct spi_master_cntlr; static inline struct amba_device * -dbx500_add_msp_spi(const char *name, resource_size_t base, int irq, +dbx500_add_msp_spi(struct device *parent, const char *name, + resource_size_t base, int irq, struct spi_master_cntlr *pdata) { - return dbx500_add_amba_device(name, base, irq, pdata, 0); + return dbx500_add_amba_device(parent, name, base, irq, + pdata, 0); } static inline struct amba_device * -dbx500_add_spi(const char *name, resource_size_t base, int irq, - struct spi_master_cntlr *pdata, +dbx500_add_spi(struct device *parent, const char *name, resource_size_t base, + int irq, struct spi_master_cntlr *pdata, u32 periphid) { - return dbx500_add_amba_device(name, base, irq, pdata, periphid); + return dbx500_add_amba_device(parent, name, base, irq, + pdata, periphid); } struct mmci_platform_data; static inline struct amba_device * -dbx500_add_sdi(const char *name, resource_size_t base, int irq, - struct mmci_platform_data *pdata, - u32 periphid) +dbx500_add_sdi(struct device *parent, const char *name, resource_size_t base, + int irq, struct mmci_platform_data *pdata, u32 periphid) { - return dbx500_add_amba_device(name, base, irq, pdata, periphid); + return dbx500_add_amba_device(parent, name, base, irq, + pdata, periphid); } struct amba_pl011_data; static inline struct amba_device * -dbx500_add_uart(const char *name, resource_size_t base, int irq, - struct amba_pl011_data *pdata) +dbx500_add_uart(struct device *parent, const char *name, resource_size_t base, + int irq, struct amba_pl011_data *pdata) { - return dbx500_add_amba_device(name, base, irq, pdata, 0); + return dbx500_add_amba_device(parent, name, base, irq, pdata, 0); } struct nmk_i2c_controller; static inline struct platform_device * -dbx500_add_i2c(int id, resource_size_t base, int irq, +dbx500_add_i2c(struct device *parent, int id, resource_size_t base, int irq, struct nmk_i2c_controller *pdata) { return dbx500_add_platform_device_4k1irq("nmk-i2c", id, base, irq, @@ -74,14 +77,14 @@ dbx500_add_msp_i2s(int id, resource_size_t base, int irq, } static inline struct amba_device * -dbx500_add_rtc(resource_size_t base, int irq) +dbx500_add_rtc(struct device *parent, resource_size_t base, int irq) { - return dbx500_add_amba_device("rtc-pl031", base, irq, NULL, 0); + return dbx500_add_amba_device(parent, "rtc-pl031", base, irq, NULL, 0); } struct nmk_gpio_platform_data; -void dbx500_add_gpios(resource_size_t *base, int num, int irq, - struct nmk_gpio_platform_data *pdata); +void dbx500_add_gpios(struct device *parent, resource_size_t *base, int num, + int irq, struct nmk_gpio_platform_data *pdata); #endif diff --git a/arch/arm/mach-ux500/devices-db5500.h b/arch/arm/mach-ux500/devices-db5500.h index 0c4bccd..e709555 100644 --- a/arch/arm/mach-ux500/devices-db5500.h +++ b/arch/arm/mach-ux500/devices-db5500.h @@ -10,70 +10,90 @@ #include "devices-common.h" -#define db5500_add_i2c1(pdata) \ - dbx500_add_i2c(1, U5500_I2C1_BASE, IRQ_DB5500_I2C1, pdata) -#define db5500_add_i2c2(pdata) \ - dbx500_add_i2c(2, U5500_I2C2_BASE, IRQ_DB5500_I2C2, pdata) -#define db5500_add_i2c3(pdata) \ - dbx500_add_i2c(3, U5500_I2C3_BASE, IRQ_DB5500_I2C3, pdata) +#define db5500_add_i2c1(parent, pdata) \ + dbx500_add_i2c(parent, 1, U5500_I2C1_BASE, IRQ_DB5500_I2C1, pdata) +#define db5500_add_i2c2(parent, pdata) \ + dbx500_add_i2c(parent, 2, U5500_I2C2_BASE, IRQ_DB5500_I2C2, pdata) +#define db5500_add_i2c3(parent, pdata) \ + dbx500_add_i2c(parent, 3, U5500_I2C3_BASE, IRQ_DB5500_I2C3, pdata) -#define db5500_add_msp0_i2s(pdata) \ - dbx500_add_msp_i2s(0, U5500_MSP0_BASE, IRQ_DB5500_MSP0, pdata) -#define db5500_add_msp1_i2s(pdata) \ - dbx500_add_msp_i2s(1, U5500_MSP1_BASE, IRQ_DB5500_MSP1, pdata) -#define db5500_add_msp2_i2s(pdata) \ - dbx500_add_msp_i2s(2, U5500_MSP2_BASE, IRQ_DB5500_MSP2, pdata) +#define db5500_add_msp0_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp0", U5500_MSP0_BASE, \ + IRQ_DB5500_MSP0, pdata) +#define db5500_add_msp1_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp1", U5500_MSP1_BASE, \ + IRQ_DB5500_MSP1, pdata) +#define db5500_add_msp2_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp2", U5500_MSP2_BASE, \ + IRQ_DB5500_MSP2, pdata) -#define db5500_add_msp0_spi(pdata) \ - dbx500_add_msp_spi("msp0", U5500_MSP0_BASE, IRQ_DB5500_MSP0, pdata) -#define db5500_add_msp1_spi(pdata) \ - dbx500_add_msp_spi("msp1", U5500_MSP1_BASE, IRQ_DB5500_MSP1, pdata) -#define db5500_add_msp2_spi(pdata) \ - dbx500_add_msp_spi("msp2", U5500_MSP2_BASE, IRQ_DB5500_MSP2, pdata) +#define db5500_add_msp0_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp0", U5500_MSP0_BASE, \ + IRQ_DB5500_MSP0, pdata) +#define db5500_add_msp1_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp1", U5500_MSP1_BASE, \ + IRQ_DB5500_MSP1, pdata) +#define db5500_add_msp2_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp2", U5500_MSP2_BASE, \ + IRQ_DB5500_MSP2, pdata) -#define db5500_add_rtc() \ - dbx500_add_rtc(U5500_RTC_BASE, IRQ_DB5500_RTC); +#define db5500_add_rtc(parent) \ + dbx500_add_rtc(parent, U5500_RTC_BASE, IRQ_DB5500_RTC); -#define db5500_add_usb(rx_cfg, tx_cfg) \ - ux500_add_usb(U5500_USBOTG_BASE, IRQ_DB5500_USBOTG, rx_cfg, tx_cfg) +#define db5500_add_usb(parent, rx_cfg, tx_cfg) \ + ux500_add_usb(parent, U5500_USBOTG_BASE, \ + IRQ_DB5500_USBOTG, rx_cfg, tx_cfg) -#define db5500_add_sdi0(pdata) \ - dbx500_add_sdi("sdi0", U5500_SDI0_BASE, IRQ_DB5500_SDMMC0, pdata, \ +#define db5500_add_sdi0(parent, pdata) \ + dbx500_add_sdi(parent, "sdi0", U5500_SDI0_BASE, \ + IRQ_DB5500_SDMMC0, pdata, \ 0x10480180) -#define db5500_add_sdi1(pdata) \ - dbx500_add_sdi("sdi1", U5500_SDI1_BASE, IRQ_DB5500_SDMMC1, pdata, \ +#define db5500_add_sdi1(parent, pdata) \ + dbx500_add_sdi(parent, "sdi1", U5500_SDI1_BASE, \ + IRQ_DB5500_SDMMC1, pdata, \ 0x10480180) -#define db5500_add_sdi2(pdata) \ - dbx500_add_sdi("sdi2", U5500_SDI2_BASE, IRQ_DB5500_SDMMC2, pdata \ +#define db5500_add_sdi2(parent, pdata) \ + dbx500_add_sdi(parent, "sdi2", U5500_SDI2_BASE, \ + IRQ_DB5500_SDMMC2, pdata \ 0x10480180) -#define db5500_add_sdi3(pdata) \ - dbx500_add_sdi("sdi3", U5500_SDI3_BASE, IRQ_DB5500_SDMMC3, pdata \ +#define db5500_add_sdi3(parent, pdata) \ + dbx500_add_sdi(parent, "sdi3", U5500_SDI3_BASE, \ + IRQ_DB5500_SDMMC3, pdata \ 0x10480180) -#define db5500_add_sdi4(pdata) \ - dbx500_add_sdi("sdi4", U5500_SDI4_BASE, IRQ_DB5500_SDMMC4, pdata \ +#define db5500_add_sdi4(parent, pdata) \ + dbx500_add_sdi(parent, "sdi4", U5500_SDI4_BASE, \ + IRQ_DB5500_SDMMC4, pdata \ 0x10480180) /* This one has a bad peripheral ID in the U5500 silicon */ -#define db5500_add_spi0(pdata) \ - dbx500_add_spi("spi0", U5500_SPI0_BASE, IRQ_DB5500_SPI0, pdata, \ +#define db5500_add_spi0(parent, pdata) \ + dbx500_add_spi(parent, "spi0", U5500_SPI0_BASE, \ + IRQ_DB5500_SPI0, pdata, \ 0x10080023) -#define db5500_add_spi1(pdata) \ - dbx500_add_spi("spi1", U5500_SPI1_BASE, IRQ_DB5500_SPI1, pdata, \ +#define db5500_add_spi1(parent, pdata) \ + dbx500_add_spi(parent, "spi1", U5500_SPI1_BASE, \ + IRQ_DB5500_SPI1, pdata, \ 0x10080023) -#define db5500_add_spi2(pdata) \ - dbx500_add_spi("spi2", U5500_SPI2_BASE, IRQ_DB5500_SPI2, pdata \ +#define db5500_add_spi2(parent, pdata) \ + dbx500_add_spi(parent, "spi2", U5500_SPI2_BASE, \ + IRQ_DB5500_SPI2, pdata \ 0x10080023) -#define db5500_add_spi3(pdata) \ - dbx500_add_spi("spi3", U5500_SPI3_BASE, IRQ_DB5500_SPI3, pdata \ +#define db5500_add_spi3(parent, pdata) \ + dbx500_add_spi(parent, "spi3", U5500_SPI3_BASE, \ + IRQ_DB5500_SPI3, pdata \ 0x10080023) -#define db5500_add_uart0(plat) \ - dbx500_add_uart("uart0", U5500_UART0_BASE, IRQ_DB5500_UART0, plat) -#define db5500_add_uart1(plat) \ - dbx500_add_uart("uart1", U5500_UART1_BASE, IRQ_DB5500_UART1, plat) -#define db5500_add_uart2(plat) \ - dbx500_add_uart("uart2", U5500_UART2_BASE, IRQ_DB5500_UART2, plat) -#define db5500_add_uart3(plat) \ - dbx500_add_uart("uart3", U5500_UART3_BASE, IRQ_DB5500_UART3, plat) +#define db5500_add_uart0(parent, plat) \ + dbx500_add_uart(parent, "uart0", U5500_UART0_BASE, \ + IRQ_DB5500_UART0, plat) +#define db5500_add_uart1(parent, plat) \ + dbx500_add_uart(parent, "uart1", U5500_UART1_BASE, \ + IRQ_DB5500_UART1, plat) +#define db5500_add_uart2(parent, plat) \ + dbx500_add_uart(parent, "uart2", U5500_UART2_BASE, \ + IRQ_DB5500_UART2, plat) +#define db5500_add_uart3(parent, plat) \ + dbx500_add_uart(parent, "uart3", U5500_UART3_BASE, \ + IRQ_DB5500_UART3, plat) #endif diff --git a/arch/arm/mach-ux500/devices-db8500.h b/arch/arm/mach-ux500/devices-db8500.h index cbd4a9a..9bd08ad 100644 --- a/arch/arm/mach-ux500/devices-db8500.h +++ b/arch/arm/mach-ux500/devices-db8500.h @@ -14,7 +14,9 @@ struct ske_keypad_platform_data; struct pl022_ssp_controller; static inline struct platform_device * -db8500_add_ske_keypad(struct ske_keypad_platform_data *pdata) +db8500_add_ske_keypad(struct device *parent, + struct ske_keypad_platform_data *pdata, + size_t size) { return dbx500_add_platform_device_4k1irq("nmk-ske-keypad", -1, U8500_SKE_BASE, @@ -22,80 +24,100 @@ db8500_add_ske_keypad(struct ske_keypad_platform_data *pdata) } static inline struct amba_device * -db8500_add_ssp(const char *name, resource_size_t base, int irq, - struct pl022_ssp_controller *pdata) +db8500_add_ssp(struct device *parent, const char *name, resource_size_t base, + int irq, struct pl022_ssp_controller *pdata) { - return dbx500_add_amba_device(name, base, irq, pdata, 0); + return dbx500_add_amba_device(parent, name, base, irq, pdata, 0); } -#define db8500_add_i2c0(pdata) \ - dbx500_add_i2c(0, U8500_I2C0_BASE, IRQ_DB8500_I2C0, pdata) -#define db8500_add_i2c1(pdata) \ - dbx500_add_i2c(1, U8500_I2C1_BASE, IRQ_DB8500_I2C1, pdata) -#define db8500_add_i2c2(pdata) \ - dbx500_add_i2c(2, U8500_I2C2_BASE, IRQ_DB8500_I2C2, pdata) -#define db8500_add_i2c3(pdata) \ - dbx500_add_i2c(3, U8500_I2C3_BASE, IRQ_DB8500_I2C3, pdata) -#define db8500_add_i2c4(pdata) \ - dbx500_add_i2c(4, U8500_I2C4_BASE, IRQ_DB8500_I2C4, pdata) - -#define db8500_add_msp0_i2s(pdata) \ - dbx500_add_msp_i2s(0, U8500_MSP0_BASE, IRQ_DB8500_MSP0, pdata) -#define db8500_add_msp1_i2s(pdata) \ - dbx500_add_msp_i2s(1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, pdata) -#define db8500_add_msp2_i2s(pdata) \ - dbx500_add_msp_i2s(2, U8500_MSP2_BASE, IRQ_DB8500_MSP2, pdata) -#define db8500_add_msp3_i2s(pdata) \ - dbx500_add_msp_i2s(3, U8500_MSP3_BASE, IRQ_DB8500_MSP1, pdata) - -#define db8500_add_msp0_spi(pdata) \ - dbx500_add_msp_spi("msp0", U8500_MSP0_BASE, IRQ_DB8500_MSP0, pdata) -#define db8500_add_msp1_spi(pdata) \ - dbx500_add_msp_spi("msp1", U8500_MSP1_BASE, IRQ_DB8500_MSP1, pdata) -#define db8500_add_msp2_spi(pdata) \ - dbx500_add_msp_spi("msp2", U8500_MSP2_BASE, IRQ_DB8500_MSP2, pdata) -#define db8500_add_msp3_spi(pdata) \ - dbx500_add_msp_spi("msp3", U8500_MSP3_BASE, IRQ_DB8500_MSP1, pdata) - -#define db8500_add_rtc() \ - dbx500_add_rtc(U8500_RTC_BASE, IRQ_DB8500_RTC); - -#define db8500_add_usb(rx_cfg, tx_cfg) \ - ux500_add_usb(U8500_USBOTG_BASE, IRQ_DB8500_USBOTG, rx_cfg, tx_cfg) - -#define db8500_add_sdi0(pdata, pid) \ - dbx500_add_sdi("sdi0", U8500_SDI0_BASE, IRQ_DB8500_SDMMC0, pdata, pid) -#define db8500_add_sdi1(pdata, pid) \ - dbx500_add_sdi("sdi1", U8500_SDI1_BASE, IRQ_DB8500_SDMMC1, pdata, pid) -#define db8500_add_sdi2(pdata, pid) \ - dbx500_add_sdi("sdi2", U8500_SDI2_BASE, IRQ_DB8500_SDMMC2, pdata, pid) -#define db8500_add_sdi3(pdata, pid) \ - dbx500_add_sdi("sdi3", U8500_SDI3_BASE, IRQ_DB8500_SDMMC3, pdata, pid) -#define db8500_add_sdi4(pdata, pid) \ - dbx500_add_sdi("sdi4", U8500_SDI4_BASE, IRQ_DB8500_SDMMC4, pdata, pid) -#define db8500_add_sdi5(pdata, pid) \ - dbx500_add_sdi("sdi5", U8500_SDI5_BASE, IRQ_DB8500_SDMMC5, pdata, pid) - -#define db8500_add_ssp0(pdata) \ - db8500_add_ssp("ssp0", U8500_SSP0_BASE, IRQ_DB8500_SSP0, pdata) -#define db8500_add_ssp1(pdata) \ - db8500_add_ssp("ssp1", U8500_SSP1_BASE, IRQ_DB8500_SSP1, pdata) - -#define db8500_add_spi0(pdata) \ - dbx500_add_spi("spi0", U8500_SPI0_BASE, IRQ_DB8500_SPI0, pdata, 0) -#define db8500_add_spi1(pdata) \ - dbx500_add_spi("spi1", U8500_SPI1_BASE, IRQ_DB8500_SPI1, pdata, 0) -#define db8500_add_spi2(pdata) \ - dbx500_add_spi("spi2", U8500_SPI2_BASE, IRQ_DB8500_SPI2, pdata, 0) -#define db8500_add_spi3(pdata) \ - dbx500_add_spi("spi3", U8500_SPI3_BASE, IRQ_DB8500_SPI3, pdata, 0) - -#define db8500_add_uart0(pdata) \ - dbx500_add_uart("uart0", U8500_UART0_BASE, IRQ_DB8500_UART0, pdata) -#define db8500_add_uart1(pdata) \ - dbx500_add_uart("uart1", U8500_UART1_BASE, IRQ_DB8500_UART1, pdata) -#define db8500_add_uart2(pdata) \ - dbx500_add_uart("uart2", U8500_UART2_BASE, IRQ_DB8500_UART2, pdata) +#define db8500_add_i2c0(parent, pdata) \ + dbx500_add_i2c(parent, 0, U8500_I2C0_BASE, IRQ_DB8500_I2C0, pdata) +#define db8500_add_i2c1(parent, pdata) \ + dbx500_add_i2c(parent, 1, U8500_I2C1_BASE, IRQ_DB8500_I2C1, pdata) +#define db8500_add_i2c2(parent, pdata) \ + dbx500_add_i2c(parent, 2, U8500_I2C2_BASE, IRQ_DB8500_I2C2, pdata) +#define db8500_add_i2c3(parent, pdata) \ + dbx500_add_i2c(parent, 3, U8500_I2C3_BASE, IRQ_DB8500_I2C3, pdata) +#define db8500_add_i2c4(parent, pdata) \ + dbx500_add_i2c(parent, 4, U8500_I2C4_BASE, IRQ_DB8500_I2C4, pdata) + +#define db8500_add_msp0_i2s(parent, pdata) \ + dbx500_add_msp_i2s(parent, 0, U8500_MSP0_BASE, IRQ_DB8500_MSP0, pdata) +#define db8500_add_msp1_i2s(parent, pdata) \ + dbx500_add_msp_i2s(parent, 1, U8500_MSP1_BASE, IRQ_DB8500_MSP1, pdata) +#define db8500_add_msp2_i2s(parent, pdata) \ + dbx500_add_msp_i2s(parent, 2, U8500_MSP2_BASE, IRQ_DB8500_MSP2, pdata) +#define db8500_add_msp3_i2s(parent, pdata) \ + dbx500_add_msp_i2s(parent, 3, U8500_MSP3_BASE, IRQ_DB8500_MSP1, pdata) + +#define db8500_add_msp0_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp0", U8500_MSP0_BASE, \ + IRQ_DB8500_MSP0, pdata) +#define db8500_add_msp1_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp1", U8500_MSP1_BASE, \ + IRQ_DB8500_MSP1, pdata) +#define db8500_add_msp2_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp2", U8500_MSP2_BASE, \ + IRQ_DB8500_MSP2, pdata) +#define db8500_add_msp3_spi(parent, pdata) \ + dbx500_add_msp_spi(parent, "msp3", U8500_MSP3_BASE, \ + IRQ_DB8500_MSP1, pdata) + +#define db8500_add_rtc(parent) \ + dbx500_add_rtc(parent, U8500_RTC_BASE, IRQ_DB8500_RTC); + +#define db8500_add_usb(parent, rx_cfg, tx_cfg) \ + ux500_add_usb(parent, U8500_USBOTG_BASE, \ + IRQ_DB8500_USBOTG, rx_cfg, tx_cfg) + +#define db8500_add_sdi0(parent, pdata, pid) \ + dbx500_add_sdi(parent, "sdi0", U8500_SDI0_BASE, \ + IRQ_DB8500_SDMMC0, pdata, pid) +#define db8500_add_sdi1(parent, pdata, pid) \ + dbx500_add_sdi(parent, "sdi1", U8500_SDI1_BASE, \ + IRQ_DB8500_SDMMC1, pdata, pid) +#define db8500_add_sdi2(parent, pdata, pid) \ + dbx500_add_sdi(parent, "sdi2", U8500_SDI2_BASE, \ + IRQ_DB8500_SDMMC2, pdata, pid) +#define db8500_add_sdi3(parent, pdata, pid) \ + dbx500_add_sdi(parent, "sdi3", U8500_SDI3_BASE, \ + IRQ_DB8500_SDMMC3, pdata, pid) +#define db8500_add_sdi4(parent, pdata, pid) \ + dbx500_add_sdi(parent, "sdi4", U8500_SDI4_BASE, \ + IRQ_DB8500_SDMMC4, pdata, pid) +#define db8500_add_sdi5(parent, pdata, pid) \ + dbx500_add_sdi(parent, "sdi5", U8500_SDI5_BASE, \ + IRQ_DB8500_SDMMC5, pdata, pid) + +#define db8500_add_ssp0(parent, pdata) \ + db8500_add_ssp(parent, "ssp0", U8500_SSP0_BASE, \ + IRQ_DB8500_SSP0, pdata) +#define db8500_add_ssp1(parent, pdata) \ + db8500_add_ssp(parent, "ssp1", U8500_SSP1_BASE, \ + IRQ_DB8500_SSP1, pdata) + +#define db8500_add_spi0(parent, pdata) \ + dbx500_add_spi(parent, "spi0", U8500_SPI0_BASE, \ + IRQ_DB8500_SPI0, pdata, 0) +#define db8500_add_spi1(parent, pdata) \ + dbx500_add_spi(parent, "spi1", U8500_SPI1_BASE, \ + IRQ_DB8500_SPI1, pdata, 0) +#define db8500_add_spi2(parent, pdata) \ + dbx500_add_spi(parent, "spi2", U8500_SPI2_BASE, \ + IRQ_DB8500_SPI2, pdata, 0) +#define db8500_add_spi3(parent, pdata) \ + dbx500_add_spi(parent, "spi3", U8500_SPI3_BASE, \ + IRQ_DB8500_SPI3, pdata, 0) + +#define db8500_add_uart0(parent, pdata) \ + dbx500_add_uart(parent, "uart0", U8500_UART0_BASE, \ + IRQ_DB8500_UART0, pdata) +#define db8500_add_uart1(parent, pdata) \ + dbx500_add_uart(parent, "uart1", U8500_UART1_BASE, \ + IRQ_DB8500_UART1, pdata) +#define db8500_add_uart2(parent, pdata) \ + dbx500_add_uart(parent, "uart2", U8500_UART2_BASE, \ + IRQ_DB8500_UART2, pdata) #endif diff --git a/arch/arm/mach-ux500/dma-db5500.c b/arch/arm/mach-ux500/dma-db5500.c index 1cfab68..41e9470 100644 --- a/arch/arm/mach-ux500/dma-db5500.c +++ b/arch/arm/mach-ux500/dma-db5500.c @@ -125,10 +125,11 @@ static struct platform_device dma40_device = { .resource = dma40_resources }; -void __init db5500_dma_init(void) +void __init db5500_dma_init(struct device *parent) { int ret; + dma40_device.dev.parent = parent; ret = platform_device_register(&dma40_device); if (ret) dev_err(&dma40_device.dev, "unable to register device: %d\n", ret); diff --git a/arch/arm/mach-ux500/include/mach/setup.h b/arch/arm/mach-ux500/include/mach/setup.h index a7d363f..e46b8b1 100644 --- a/arch/arm/mach-ux500/include/mach/setup.h +++ b/arch/arm/mach-ux500/include/mach/setup.h @@ -18,14 +18,14 @@ void __init ux500_map_io(void); extern void __init u5500_map_io(void); extern void __init u8500_map_io(void); -extern void __init u5500_init_devices(void); -extern void __init u8500_init_devices(void); +extern struct device * __init u5500_init_devices(void); +extern struct device * __init u8500_init_devices(void); extern void __init ux500_init_irq(void); -extern void __init u5500_sdi_init(void); +extern void __init u5500_sdi_init(struct device *parent); -extern void __init db5500_dma_init(void); +extern void __init db5500_dma_init(struct device *parent); /* We re-use nomadik_timer for this platform */ extern void nmdk_timer_init(void); diff --git a/arch/arm/mach-ux500/include/mach/usb.h b/arch/arm/mach-ux500/include/mach/usb.h index d3739d4..4c1cc50 100644 --- a/arch/arm/mach-ux500/include/mach/usb.h +++ b/arch/arm/mach-ux500/include/mach/usb.h @@ -20,6 +20,6 @@ struct ux500_musb_board_data { bool (*dma_filter)(struct dma_chan *chan, void *filter_param); }; -void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg, - int *dma_tx_cfg); +void ux500_add_usb(struct device *parent, resource_size_t base, + int irq, int *dma_rx_cfg, int *dma_tx_cfg); #endif diff --git a/arch/arm/mach-ux500/usb.c b/arch/arm/mach-ux500/usb.c index 9f9e1c2..5329a2c 100644 --- a/arch/arm/mach-ux500/usb.c +++ b/arch/arm/mach-ux500/usb.c @@ -140,8 +140,8 @@ static inline void ux500_usb_dma_update_tx_ch_config(int *dst_dev_type) musb_dma_tx_ch[idx].dst_dev_type = dst_dev_type[idx]; } -void ux500_add_usb(resource_size_t base, int irq, int *dma_rx_cfg, - int *dma_tx_cfg) +void ux500_add_usb(struct device *parent, resource_size_t base, int irq, + int *dma_rx_cfg, int *dma_tx_cfg) { ux500_musb_device.resource[0].start = base; ux500_musb_device.resource[0].end = base + SZ_64K - 1; -- cgit v0.10.2 From eda413c228e227d888bc13d210e7c4c6aa62a682 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Feb 2012 11:22:24 -0800 Subject: ARM: ux500: export System-on-Chip information ux500 via sysfs Here we make use of the new System-On-Chip bus driver to export vital SoC information out to userspace via sysfs. This patch provides a data structure of strings to populate the base nodes found in: /sys/devices/soc[0|1|2|...]/[family|machine|revision|soc_id]. It also adds one more node as requested by ST-Ericsson. 'process' depicts the way in which the silicon was manufactured. Signed-off-by: Lee Jones Acked-by: Linus Walleij Signed-off-by: Arnd Bergmann diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig index 52af004..5cfa539 100644 --- a/arch/arm/mach-ux500/Kconfig +++ b/arch/arm/mach-ux500/Kconfig @@ -28,6 +28,7 @@ config MACH_U8500 bool "U8500 Development platform" depends on UX500_SOC_DB8500 select TPS6105X + select SOC_BUS help Include support for the mop500 development platform. diff --git a/arch/arm/mach-ux500/cpu-db5500.c b/arch/arm/mach-ux500/cpu-db5500.c index c402fd6..8f8acfd 100644 --- a/arch/arm/mach-ux500/cpu-db5500.c +++ b/arch/arm/mach-ux500/cpu-db5500.c @@ -212,18 +212,32 @@ static int usb_db5500_tx_dma_cfg[] = { DB5500_DMA_DEV38_USB_OTG_OEP_8 }; -struct device* __init u5500_init_devices(void) +static const char *db5500_read_soc_id(void) { - /* FIXME: First parameter to be a real parent. */ - db5500_add_gpios(NULL); + return kasprintf(GFP_KERNEL, "u5500 currently unsupported\n"); +} + +static struct device * __init db5500_soc_device_init(void) +{ + const char *soc_id = db5500_read_soc_id(); + + return ux500_soc_device_init(soc_id); +} + +struct device * __init u5500_init_devices(void) +{ + struct device *parent; + + parent = db5500_soc_device_init(); + + db5500_add_gpios(parent); db5500_pmu_init(); - db5500_dma_init(NULL); - db5500_add_rtc(NULL); - db5500_add_usb(NULL, usb_db5500_rx_dma_cfg, usb_db5500_tx_dma_cfg); + db5500_dma_init(parent); + db5500_add_rtc(parent); + db5500_add_usb(parent, usb_db5500_rx_dma_cfg, usb_db5500_tx_dma_cfg); platform_add_devices(db5500_platform_devs, ARRAY_SIZE(db5500_platform_devs)); - /* FIXME: Return value to be a real parent. */ - return NULL; + return parent; } diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index 1e8a2cb..afcde3d 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -24,6 +24,7 @@ #include #include #include +#include #include "devices-db8500.h" #include "ste-dma40-db8500.h" @@ -164,18 +165,38 @@ static int usb_db8500_tx_dma_cfg[] = { DB8500_DMA_DEV39_USB_OTG_OEP_8 }; +static const char *db8500_read_soc_id(void) +{ + void __iomem *uid = __io_address(U8500_BB_UID_BASE); + + return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x", + readl((u32 *)uid+1), + readl((u32 *)uid+1), readl((u32 *)uid+2), + readl((u32 *)uid+3), readl((u32 *)uid+4)); +} + +static struct device * __init db8500_soc_device_init(void) +{ + const char *soc_id = db8500_read_soc_id(); + + return ux500_soc_device_init(soc_id); +} + /* * This function is called from the board init */ -struct device* __init u8500_init_devices(void) +struct device * __init u8500_init_devices(void) { - db8500_add_rtc(NULL); - db8500_add_gpios(NULL); - db8500_add_usb(NULL, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg); + struct device *parent; + + parent = db8500_soc_device_init(); + + db8500_add_rtc(parent); + db8500_add_gpios(parent); + db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg); platform_device_register_simple("cpufreq-u8500", -1, NULL, 0); platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); - /* FIXME: Return value to be a real parent. */ - return NULL; + return parent; } diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c index f418574..055fb6e 100644 --- a/arch/arm/mach-ux500/cpu.c +++ b/arch/arm/mach-ux500/cpu.c @@ -2,6 +2,7 @@ * Copyright (C) ST-Ericsson SA 2010 * * Author: Rabin Vincent for ST-Ericsson + * Author: Lee Jones for ST-Ericsson * License terms: GNU General Public License (GPL) version 2 */ @@ -11,6 +12,10 @@ #include #include #include +#include +#include +#include +#include #include #include @@ -50,3 +55,73 @@ void __init ux500_init_irq(void) db8500_prcmu_early_init(); clk_init(); } + +static const char * __init ux500_get_machine(void) +{ + return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber()); +} + +static const char * __init ux500_get_family(void) +{ + return kasprintf(GFP_KERNEL, "ux500"); +} + +static const char * __init ux500_get_revision(void) +{ + unsigned int rev = dbx500_revision(); + + if (rev == 0x01) + return kasprintf(GFP_KERNEL, "%s", "ED"); + else if (rev >= 0xA0) + return kasprintf(GFP_KERNEL, "%d.%d", + (rev >> 4) - 0xA + 1, rev & 0xf); + + return kasprintf(GFP_KERNEL, "%s", "Unknown"); +} + +static ssize_t ux500_get_process(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + if (dbx500_id.process == 0x00) + return sprintf(buf, "Standard\n"); + + return sprintf(buf, "%02xnm\n", dbx500_id.process); +} + +static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr, + const char *soc_id) +{ + soc_dev_attr->soc_id = soc_id; + soc_dev_attr->machine = ux500_get_machine(); + soc_dev_attr->family = ux500_get_family(); + soc_dev_attr->revision = ux500_get_revision(); +} + +struct device_attribute ux500_soc_attr = + __ATTR(process, S_IRUGO, ux500_get_process, NULL); + +struct device * __init ux500_soc_device_init(const char *soc_id) +{ + struct device *parent; + struct soc_device *soc_dev; + struct soc_device_attribute *soc_dev_attr; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + return ERR_PTR(-ENOMEM); + + soc_info_populate(soc_dev_attr, soc_id); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR_OR_NULL(soc_dev)) { + kfree(soc_dev_attr); + return NULL; + } + + parent = soc_device_to_device(soc_dev); + if (!IS_ERR_OR_NULL(parent)) + device_create_file(parent, &ux500_soc_attr); + + return parent; +} diff --git a/arch/arm/mach-ux500/include/mach/db8500-regs.h b/arch/arm/mach-ux500/include/mach/db8500-regs.h index 80e10f5..9ec20b9 100644 --- a/arch/arm/mach-ux500/include/mach/db8500-regs.h +++ b/arch/arm/mach-ux500/include/mach/db8500-regs.h @@ -161,4 +161,7 @@ #define U8500_MODEM_BASE 0xe000000 #define U8500_APE_BASE 0x6000000 +/* SoC identification number information */ +#define U8500_BB_UID_BASE (U8500_BACKUPRAM1_BASE + 0xFC0) + #endif diff --git a/arch/arm/mach-ux500/include/mach/setup.h b/arch/arm/mach-ux500/include/mach/setup.h index e46b8b1..74b43bb 100644 --- a/arch/arm/mach-ux500/include/mach/setup.h +++ b/arch/arm/mach-ux500/include/mach/setup.h @@ -27,6 +27,8 @@ extern void __init u5500_sdi_init(struct device *parent); extern void __init db5500_dma_init(struct device *parent); +extern struct device *ux500_soc_device_init(const char *soc_id); + /* We re-use nomadik_timer for this platform */ extern void nmdk_timer_init(void); -- cgit v0.10.2 From b024a0c804356d90b13c072c8bbb444d9e745a66 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Feb 2012 11:22:25 -0800 Subject: ARM: ux500: move top level platform devices in sysfs to /sys/devices/socX At the request of Arnd Bergmann this patch moves all SoC platform devices found in sysfs from /sys/devices/platform to /sys/devices/soc/. It is believed as the devices are SoC specific and a /sys/devices/soc node has recently become available, that this would be a more appropriate place to display the data. Signed-off-by: Lee Jones Acked-by: Linus Walleij Signed-off-by: Arnd Bergmann diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index f9ce2a1..04afcdf 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -610,6 +610,7 @@ static void __init mop500_init_machine(void) { struct device *parent = NULL; int i2c0_devs; + int i; mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR; @@ -617,6 +618,9 @@ static void __init mop500_init_machine(void) mop500_pins_init(); + for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++) + mop500_platform_devs[i]->dev.parent = parent; + platform_add_devices(mop500_platform_devs, ARRAY_SIZE(mop500_platform_devs)); @@ -639,11 +643,15 @@ static void __init snowball_init_machine(void) { struct device *parent = NULL; int i2c0_devs; + int i; parent = u8500_init_devices(); snowball_pins_init(); + for (i = 0; i < ARRAY_SIZE(snowball_platform_devs); i++) + snowball_platform_devs[i]->dev.parent = parent; + platform_add_devices(snowball_platform_devs, ARRAY_SIZE(snowball_platform_devs)); @@ -665,6 +673,7 @@ static void __init hrefv60_init_machine(void) { struct device *parent = NULL; int i2c0_devs; + int i; /* * The HREFv60 board removed a GPIO expander and routed @@ -677,6 +686,9 @@ static void __init hrefv60_init_machine(void) hrefv60_pins_init(); + for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++) + mop500_platform_devs[i]->dev.parent = parent; + platform_add_devices(mop500_platform_devs, ARRAY_SIZE(mop500_platform_devs)); diff --git a/arch/arm/mach-ux500/board-u5500.c b/arch/arm/mach-ux500/board-u5500.c index d7a9596..0ff4be7 100644 --- a/arch/arm/mach-ux500/board-u5500.c +++ b/arch/arm/mach-ux500/board-u5500.c @@ -136,6 +136,7 @@ static void __init u5500_uart_init(struct device *parent) static void __init u5500_init_machine(void) { struct device *parent = NULL; + int i; parent = u5500_init_devices(); nmk_config_pins(u5500_pins, ARRAY_SIZE(u5500_pins)); @@ -144,6 +145,9 @@ static void __init u5500_init_machine(void) u5500_sdi_init(parent); u5500_uart_init(parent); + for (i = 0; i < ARRAY_SIZE(u5500_platform_devices); i++) + u5500_platform_devices[i]->dev.parent = parent; + platform_add_devices(u5500_platform_devices, ARRAY_SIZE(u5500_platform_devices)); } diff --git a/arch/arm/mach-ux500/cpu-db5500.c b/arch/arm/mach-ux500/cpu-db5500.c index 8f8acfd..bca47f3 100644 --- a/arch/arm/mach-ux500/cpu-db5500.c +++ b/arch/arm/mach-ux500/cpu-db5500.c @@ -227,6 +227,7 @@ static struct device * __init db5500_soc_device_init(void) struct device * __init u5500_init_devices(void) { struct device *parent; + int i; parent = db5500_soc_device_init(); @@ -236,6 +237,9 @@ struct device * __init u5500_init_devices(void) db5500_add_rtc(parent); db5500_add_usb(parent, usb_db5500_rx_dma_cfg, usb_db5500_tx_dma_cfg); + for (i = 0; i < ARRAY_SIZE(db5500_platform_devs); i++) + db5500_platform_devs[i]->dev.parent = parent; + platform_add_devices(db5500_platform_devs, ARRAY_SIZE(db5500_platform_devs)); diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index afcde3d..9bd8163 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -188,6 +188,7 @@ static struct device * __init db8500_soc_device_init(void) struct device * __init u8500_init_devices(void) { struct device *parent; + int i; parent = db8500_soc_device_init(); @@ -195,7 +196,12 @@ struct device * __init u8500_init_devices(void) db8500_add_gpios(parent); db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg); - platform_device_register_simple("cpufreq-u8500", -1, NULL, 0); + platform_device_register_data(parent, + "cpufreq-u8500", -1, NULL, 0); + + for (i = 0; i < ARRAY_SIZE(platform_devs); i++) + platform_devs[i]->dev.parent = parent; + platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); return parent; diff --git a/arch/arm/mach-ux500/devices-common.c b/arch/arm/mach-ux500/devices-common.c index 96be248..96effbd 100644 --- a/arch/arm/mach-ux500/devices-common.c +++ b/arch/arm/mach-ux500/devices-common.c @@ -47,6 +47,8 @@ dbx500_add_amba_device(struct device *parent, const char *name, dev->dev.platform_data = pdata; + dev->dev.parent = parent; + ret = amba_device_register(dev, &iomem_resource); if (ret) { kfree(dev); @@ -126,9 +128,14 @@ dbx500_add_gpio(struct device *parent, int id, resource_size_t addr, int irq, } }; - return platform_device_register_resndata(NULL, "gpio", id, - resources, ARRAY_SIZE(resources), - pdata, sizeof(*pdata)); + return platform_device_register_resndata( + parent, + "gpio", + id, + resources, + ARRAY_SIZE(resources), + pdata, + sizeof(*pdata)); } void dbx500_add_gpios(struct device *parent, resource_size_t *base, int num, diff --git a/arch/arm/mach-ux500/usb.c b/arch/arm/mach-ux500/usb.c index 5329a2c..a74af38 100644 --- a/arch/arm/mach-ux500/usb.c +++ b/arch/arm/mach-ux500/usb.c @@ -7,6 +7,7 @@ #include #include #include + #include #include #include @@ -151,5 +152,7 @@ void ux500_add_usb(struct device *parent, resource_size_t base, int irq, ux500_usb_dma_update_rx_ch_config(dma_rx_cfg); ux500_usb_dma_update_tx_ch_config(dma_tx_cfg); + ux500_musb_device.dev.parent = parent; + platform_device_register(&ux500_musb_device); } -- cgit v0.10.2 From 3510ec672319e09fe43bd623b19fcf539c0bd1fa Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 6 Feb 2012 11:22:26 -0800 Subject: ARM: ux500: remove intermediary add_platform_device* functions These are no longer required since a 'parent' pointer is now passed to each registering device. Signed-off-by: Lee Jones Acked-by: Linus Walleij Signed-off-by: Arnd Bergmann diff --git a/arch/arm/mach-ux500/devices-common.c b/arch/arm/mach-ux500/devices-common.c index 96effbd..c3bc094 100644 --- a/arch/arm/mach-ux500/devices-common.c +++ b/arch/arm/mach-ux500/devices-common.c @@ -59,59 +59,6 @@ dbx500_add_amba_device(struct device *parent, const char *name, } static struct platform_device * -dbx500_add_platform_device(const char *name, int id, void *pdata, - struct resource *res, int resnum) -{ - struct platform_device *dev; - int ret; - - dev = platform_device_alloc(name, id); - if (!dev) - return ERR_PTR(-ENOMEM); - - dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); - dev->dev.dma_mask = &dev->dev.coherent_dma_mask; - - ret = platform_device_add_resources(dev, res, resnum); - if (ret) - goto out_free; - - dev->dev.platform_data = pdata; - - ret = platform_device_add(dev); - if (ret) - goto out_free; - - return dev; - -out_free: - platform_device_put(dev); - return ERR_PTR(ret); -} - -struct platform_device * -dbx500_add_platform_device_4k1irq(const char *name, int id, - resource_size_t base, - int irq, void *pdata) -{ - struct resource resources[] = { - [0] = { - .start = base, - .end = base + SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = irq, - .end = irq, - .flags = IORESOURCE_IRQ, - } - }; - - return dbx500_add_platform_device(name, id, pdata, resources, - ARRAY_SIZE(resources)); -} - -static struct platform_device * dbx500_add_gpio(struct device *parent, int id, resource_size_t addr, int irq, struct nmk_gpio_platform_data *pdata) { diff --git a/arch/arm/mach-ux500/devices-common.h b/arch/arm/mach-ux500/devices-common.h index f8adff8..39c74ec 100644 --- a/arch/arm/mach-ux500/devices-common.h +++ b/arch/arm/mach-ux500/devices-common.h @@ -8,14 +8,15 @@ #ifndef __DEVICES_COMMON_H #define __DEVICES_COMMON_H -extern struct amba_device * -dbx500_add_amba_device(struct device *parent, const char *name, resource_size_t base, - int irq, void *pdata, unsigned int periphid); +#include +#include +#include +#include -extern struct platform_device * -dbx500_add_platform_device_4k1irq(const char *name, int id, - resource_size_t base, - int irq, void *pdata); +extern struct amba_device * +dbx500_add_amba_device(struct device *parent, const char *name, + resource_size_t base, int irq, void *pdata, + unsigned int periphid); struct spi_master_cntlr; @@ -60,20 +61,25 @@ struct nmk_i2c_controller; static inline struct platform_device * dbx500_add_i2c(struct device *parent, int id, resource_size_t base, int irq, - struct nmk_i2c_controller *pdata) -{ - return dbx500_add_platform_device_4k1irq("nmk-i2c", id, base, irq, - pdata); -} - -struct msp_i2s_platform_data; - -static inline struct platform_device * -dbx500_add_msp_i2s(int id, resource_size_t base, int irq, - struct msp_i2s_platform_data *pdata) + struct nmk_i2c_controller *data) { - return dbx500_add_platform_device_4k1irq("MSP_I2S", id, base, irq, - pdata); + struct resource res[] = { + DEFINE_RES_MEM(base, SZ_4K), + DEFINE_RES_IRQ(irq), + }; + + struct platform_device_info pdevinfo = { + .parent = parent, + .name = "nmk-i2c", + .id = id, + .res = res, + .num_res = ARRAY_SIZE(res), + .data = data, + .size_data = sizeof(*data), + .dma_mask = DMA_BIT_MASK(32), + }; + + return platform_device_register_full(&pdevinfo); } static inline struct amba_device * diff --git a/arch/arm/mach-ux500/devices-db8500.h b/arch/arm/mach-ux500/devices-db8500.h index 9bd08ad..9fd93e9 100644 --- a/arch/arm/mach-ux500/devices-db8500.h +++ b/arch/arm/mach-ux500/devices-db8500.h @@ -18,9 +18,13 @@ db8500_add_ske_keypad(struct device *parent, struct ske_keypad_platform_data *pdata, size_t size) { - return dbx500_add_platform_device_4k1irq("nmk-ske-keypad", -1, - U8500_SKE_BASE, - IRQ_DB8500_KB, pdata); + struct resource resources[] = { + DEFINE_RES_MEM(U8500_SKE_BASE, SZ_4K), + DEFINE_RES_IRQ(IRQ_DB8500_KB), + }; + + return platform_device_register_resndata(parent, "nmk-ske-keypad", -1, + resources, 2, pdata, size); } static inline struct amba_device * -- cgit v0.10.2 From abde710ca8776f851e41c3dfe78ad7dcafa26dc9 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:07:28 +0000 Subject: ARM: smp_twd: make local_timer_stop a symbol instead of a #define When CONFIG_HAVE_ARM_TWD is selected, local_timer_stop is a #define, while all other local timers are using a real function. Convert it to an alias of twd_timer_stop, as it helps converting all local timers to another internal API in a sane way. Signed-off-by: Marc Zyngier diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h index c6a1842..7e1b2c5 100644 --- a/arch/arm/include/asm/localtimer.h +++ b/arch/arm/include/asm/localtimer.h @@ -26,17 +26,13 @@ void percpu_timer_setup(void); #include "smp_twd.h" -#define local_timer_stop(c) twd_timer_stop((c)) - -#else +#endif /* * Stop the local timer */ void local_timer_stop(struct clock_event_device *); -#endif - /* * Setup a local timer interrupt for a CPU. */ diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h index ef9ffba9..bf8449d 100644 --- a/arch/arm/include/asm/smp_twd.h +++ b/arch/arm/include/asm/smp_twd.h @@ -23,6 +23,5 @@ struct clock_event_device; extern void __iomem *twd_base; void twd_timer_setup(struct clock_event_device *); -void twd_timer_stop(struct clock_event_device *); #endif diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 4285daa..b39916a 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -87,12 +87,17 @@ int twd_timer_ack(void) return 0; } -void twd_timer_stop(struct clock_event_device *clk) +static void twd_timer_stop(struct clock_event_device *clk) { twd_set_mode(CLOCK_EVT_MODE_UNUSED, clk); disable_percpu_irq(clk->irq); } +/* Temporary hack to be removed when all TWD users are converted to + the new registration interface */ +void local_timer_stop(struct clock_event_device *clk) + __attribute__ ((alias ("twd_timer_stop"))); + #ifdef CONFIG_CPU_FREQ /* -- cgit v0.10.2 From 0ef330e10dcdbca8f4566e9eaf77015f8ce039d3 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:26:45 +0000 Subject: ARM: local timers: introduce a new registration interface In order to switch to a runtime selectable local timer, add a registration interface that timer drivers can use to register to the core. local_timer_setup() and local_timer_stop() are made weak symbols in order not to break existing setups. Signed-off-by: Marc Zyngier diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h index 7e1b2c5..f088d63 100644 --- a/arch/arm/include/asm/localtimer.h +++ b/arch/arm/include/asm/localtimer.h @@ -15,6 +15,11 @@ struct clock_event_device; +struct local_timer_ops { + int (*setup)(struct clock_event_device *); + void (*stop)(struct clock_event_device *); +}; + /* * Setup a per-cpu timer, whether it be a local timer or dummy broadcast */ @@ -38,6 +43,11 @@ void local_timer_stop(struct clock_event_device *); */ int local_timer_setup(struct clock_event_device *); +/* + * Register a local timer driver + */ +int local_timer_register(struct local_timer_ops *); + #else static inline int local_timer_setup(struct clock_event_device *evt) @@ -48,6 +58,11 @@ static inline int local_timer_setup(struct clock_event_device *evt) static inline void local_timer_stop(struct clock_event_device *evt) { } + +static inline int local_timer_register(struct local_timer_ops *ops) +{ + return -ENXIO; +} #endif #endif diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index cdeb727..89bb02c 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -459,6 +459,33 @@ static void __cpuinit broadcast_timer_setup(struct clock_event_device *evt) clockevents_register_device(evt); } +static struct local_timer_ops *lt_ops; + +#ifdef CONFIG_LOCAL_TIMERS +int local_timer_register(struct local_timer_ops *ops) +{ + if (lt_ops) + return -EBUSY; + + lt_ops = ops; + return 0; +} +#endif + +int __cpuinit __attribute__ ((weak)) local_timer_setup(struct clock_event_device *clk) +{ + if (lt_ops) + return lt_ops->setup(clk); + + return -ENXIO; +} + +void __attribute__ ((weak)) local_timer_stop(struct clock_event_device *clk) +{ + if (lt_ops) + lt_ops->stop(clk); +} + void __cpuinit percpu_timer_setup(void) { unsigned int cpu = smp_processor_id(); -- cgit v0.10.2 From 81e46f7b6dcec485bcb1f988ba4dc5b20189573c Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:39:26 +0000 Subject: ARM: smp_twd: add runtime registration support Add support for the new registration interface to smp_twd. Platforms can populate a struct twd_local_timer with MMIO and IRQ resources, and then call twd_local_timer_register() to have the timer registered with the core. Signed-off-by: Marc Zyngier diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h index bf8449d..16c89b7 100644 --- a/arch/arm/include/asm/smp_twd.h +++ b/arch/arm/include/asm/smp_twd.h @@ -18,10 +18,26 @@ #define TWD_TIMER_CONTROL_PERIODIC (1 << 1) #define TWD_TIMER_CONTROL_IT_ENABLE (1 << 2) +#include + struct clock_event_device; extern void __iomem *twd_base; -void twd_timer_setup(struct clock_event_device *); +int twd_timer_setup(struct clock_event_device *); + +struct twd_local_timer { + struct resource res[2]; +}; + +#define DEFINE_TWD_LOCAL_TIMER(name,base,irq) \ +struct twd_local_timer name __initdata = { \ + .res = { \ + DEFINE_RES_MEM(base, 0x10), \ + DEFINE_RES_IRQ(irq), \ + }, \ +}; + +int twd_local_timer_register(struct twd_local_timer *); #endif diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index b39916a..18c55f1 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -32,6 +32,7 @@ static struct clk *twd_clk; static unsigned long twd_timer_rate; static struct clock_event_device __percpu **twd_evt; +static int twd_ppi; static void twd_set_mode(enum clock_event_mode mode, struct clock_event_device *clk) @@ -227,7 +228,7 @@ static struct clk *twd_get_clock(void) /* * Setup the local clock events for a CPU. */ -void __cpuinit twd_timer_setup(struct clock_event_device *clk) +int __cpuinit twd_timer_setup(struct clock_event_device *clk) { struct clock_event_device **this_cpu_clk; @@ -237,7 +238,7 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk) twd_evt = alloc_percpu(struct clock_event_device *); if (!twd_evt) { pr_err("twd: can't allocate memory\n"); - return; + return -ENOMEM; } err = request_percpu_irq(clk->irq, twd_handler, @@ -245,7 +246,7 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk) if (err) { pr_err("twd: can't register interrupt %d (%d)\n", clk->irq, err); - return; + return err; } } @@ -265,6 +266,8 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk) clk->rating = 350; clk->set_mode = twd_set_mode; clk->set_next_event = twd_set_next_event; + if (!clk->irq) + clk->irq = twd_ppi; this_cpu_clk = __this_cpu_ptr(twd_evt); *this_cpu_clk = clk; @@ -272,4 +275,46 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk) clockevents_config_and_register(clk, twd_timer_rate, 0xf, 0xffffffff); enable_percpu_irq(clk->irq, 0); + + return 0; +} + +static struct local_timer_ops twd_lt_ops __cpuinitdata = { + .setup = twd_timer_setup, + .stop = twd_timer_stop, +}; + +int __init twd_local_timer_register(struct twd_local_timer *tlt) +{ + int err; + + if (twd_base || twd_evt) + return -EBUSY; + + twd_ppi = tlt->res[1].start; + + twd_evt = alloc_percpu(struct clock_event_device *); + twd_base = ioremap(tlt->res[0].start, resource_size(&tlt->res[0])); + if (!twd_base || !twd_evt) { + err = -ENOMEM; + goto out; + } + + err = request_percpu_irq(twd_ppi, twd_handler, "twd", twd_evt); + if (err) { + pr_err("twd: can't register interrupt %d (%d)\n", twd_ppi, err); + goto out; + } + + err = local_timer_register(&twd_lt_ops); + if (err) + goto out; + + return 0; + +out: + iounmap(twd_base); + free_percpu(twd_evt); + twd_base = twd_evt = NULL; + return err; } -- cgit v0.10.2 From d8e0364364d333feb4564bb7d7d983182b34427e Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 22:15:45 +0000 Subject: ARM: smp_twd: add device tree support Add bindings to support DT discovery of the ARM Timer Watchdog (aka TWD). Only the timer side is converted by this patch. Acked-by: Rob Herring Signed-off-by: Marc Zyngier diff --git a/Documentation/devicetree/bindings/arm/twd.txt b/Documentation/devicetree/bindings/arm/twd.txt new file mode 100644 index 0000000..75b8610 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/twd.txt @@ -0,0 +1,48 @@ +* ARM Timer Watchdog + +ARM 11MP, Cortex-A5 and Cortex-A9 are often associated with a per-core +Timer-Watchdog (aka TWD), which provides both a per-cpu local timer +and watchdog. + +The TWD is usually attached to a GIC to deliver its two per-processor +interrupts. + +** Timer node required properties: + +- compatible : Should be one of: + "arm,cortex-a9-twd-timer" + "arm,cortex-a5-twd-timer" + "arm,arm11mp-twd-timer" + +- interrupts : One interrupt to each core + +- reg : Specify the base address and the size of the TWD timer + register window. + +Example: + + twd-timer@2c000600 { + compatible = "arm,arm11mp-twd-timer""; + reg = <0x2c000600 0x20>; + interrupts = <1 13 0xf01>; + }; + +** Watchdog node properties: + +- compatible : Should be one of: + "arm,cortex-a9-twd-wdt" + "arm,cortex-a5-twd-wdt" + "arm,arm11mp-twd-wdt" + +- interrupts : One interrupt to each core + +- reg : Specify the base address and the size of the TWD watchdog + register window. + +Example: + + twd-watchdog@2c000620 { + compatible = "arm,arm11mp-twd-wdt"; + reg = <0x2c000620 0x20>; + interrupts = <1 14 0xf01>; + }; diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h index 16c89b7..8047e6e 100644 --- a/arch/arm/include/asm/smp_twd.h +++ b/arch/arm/include/asm/smp_twd.h @@ -40,4 +40,12 @@ struct twd_local_timer name __initdata = { \ int twd_local_timer_register(struct twd_local_timer *); +#ifdef CONFIG_HAVE_ARM_TWD +void twd_local_timer_of_register(void); +#else +static inline void twd_local_timer_of_register(void) +{ +} +#endif + #endif diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 18c55f1..761826c 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -20,6 +20,8 @@ #include #include #include +#include +#include #include #include @@ -284,37 +286,86 @@ static struct local_timer_ops twd_lt_ops __cpuinitdata = { .stop = twd_timer_stop, }; -int __init twd_local_timer_register(struct twd_local_timer *tlt) +static int __init twd_local_timer_common_register(void) { int err; - if (twd_base || twd_evt) - return -EBUSY; - - twd_ppi = tlt->res[1].start; - twd_evt = alloc_percpu(struct clock_event_device *); - twd_base = ioremap(tlt->res[0].start, resource_size(&tlt->res[0])); - if (!twd_base || !twd_evt) { + if (!twd_evt) { err = -ENOMEM; - goto out; + goto out_free; } err = request_percpu_irq(twd_ppi, twd_handler, "twd", twd_evt); if (err) { pr_err("twd: can't register interrupt %d (%d)\n", twd_ppi, err); - goto out; + goto out_free; } err = local_timer_register(&twd_lt_ops); if (err) - goto out; + goto out_irq; return 0; -out: +out_irq: + free_percpu_irq(twd_ppi, twd_evt); +out_free: iounmap(twd_base); + twd_base = NULL; free_percpu(twd_evt); - twd_base = twd_evt = NULL; + return err; } + +int __init twd_local_timer_register(struct twd_local_timer *tlt) +{ + if (twd_base || twd_evt) + return -EBUSY; + + twd_ppi = tlt->res[1].start; + + twd_base = ioremap(tlt->res[0].start, resource_size(&tlt->res[0])); + if (!twd_base) + return -ENOMEM; + + return twd_local_timer_common_register(); +} + +#ifdef CONFIG_OF +const static struct of_device_id twd_of_match[] __initconst = { + { .compatible = "arm,cortex-a9-twd-timer", }, + { .compatible = "arm,cortex-a5-twd-timer", }, + { .compatible = "arm,arm11mp-twd-timer", }, + { }, +}; + +void __init twd_local_timer_of_register(void) +{ + struct device_node *np; + int err; + + np = of_find_matching_node(NULL, twd_of_match); + if (!np) { + err = -ENODEV; + goto out; + } + + twd_ppi = irq_of_parse_and_map(np, 0); + if (!twd_ppi) { + err = -EINVAL; + goto out; + } + + twd_base = of_iomap(np, 0); + if (!twd_base) { + err = -ENOMEM; + goto out; + } + + err = twd_local_timer_common_register(); + +out: + WARN(err, "twd_local_timer_of_register failed (%d)\n", err); +} +#endif -- cgit v0.10.2 From a45c983f85328be9d0540a6b8250609dbf16872c Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:44:19 +0000 Subject: ARM: OMAP4: convert to twd_local_timer_register() interface Add support for the new smp_twd runtime registration interface to the OMAP4 platforms, and remove the old compile-time support. Tested on Panda. Acked-by: Tony Lindgren Acked-by: Santosh Shilimkar Signed-off-by: Marc Zyngier diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index bd76394..05c2ffc 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -23,7 +23,6 @@ obj-$(CONFIG_TWL4030_CORE) += omap_twl.o # SMP support ONLY available for OMAP4 obj-$(CONFIG_SMP) += omap-smp.o omap-headsmp.o -obj-$(CONFIG_LOCAL_TIMERS) += timer-mpu.o obj-$(CONFIG_HOTPLUG_CPU) += omap-hotplug.o obj-$(CONFIG_ARCH_OMAP4) += omap4-common.o omap-wakeupgen.o \ sleep44xx.o diff --git a/arch/arm/mach-omap2/timer-mpu.c b/arch/arm/mach-omap2/timer-mpu.c deleted file mode 100644 index 31c0ac4..0000000 --- a/arch/arm/mach-omap2/timer-mpu.c +++ /dev/null @@ -1,39 +0,0 @@ -/* - * The MPU local timer source file. In OMAP4, both cortex-a9 cores have - * own timer in it's MPU domain. These timers will be driving the - * linux kernel SMP tick framework when active. These timers are not - * part of the wake up domain. - * - * Copyright (C) 2009 Texas Instruments, Inc. - * - * Author: - * Santosh Shilimkar - * - * This file is based on arm realview smp platform file. - * Copyright (C) 2002 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include -#include -#include -#include -#include -#include - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - /* Local timers are not supprted on OMAP4430 ES1.0 */ - if (omap_rev() == OMAP4430_REV_ES1_0) - return -ENXIO; - - evt->irq = OMAP44XX_IRQ_LOCALTIMER; - twd_timer_setup(evt); - return 0; -} - diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c index 5c9acea..c512bac 100644 --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -39,7 +39,7 @@ #include #include -#include +#include #include #include "common.h" #include @@ -324,14 +324,26 @@ OMAP_SYS_TIMER(3_secure) #endif #ifdef CONFIG_ARCH_OMAP4 -static void __init omap4_timer_init(void) -{ #ifdef CONFIG_LOCAL_TIMERS - twd_base = ioremap(OMAP44XX_LOCAL_TWD_BASE, SZ_256); - BUG_ON(!twd_base); +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + OMAP44XX_LOCAL_TWD_BASE, + OMAP44XX_IRQ_LOCALTIMER); #endif + +static void __init omap4_timer_init(void) +{ omap2_gp_clockevent_init(1, OMAP4_CLKEV_SOURCE); omap2_gp_clocksource_init(2, OMAP4_MPU_SOURCE); +#ifdef CONFIG_LOCAL_TIMERS + /* Local timers are not supprted on OMAP4430 ES1.0 */ + if (omap_rev() != OMAP4430_REV_ES1_0) { + int err; + + err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); + } +#endif } OMAP_SYS_TIMER(4) #endif -- cgit v0.10.2 From 7c380f273cf09b202e4bc9cbe137aef1870b8a20 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 4 Aug 2011 11:57:04 +0100 Subject: ARM: plat-versatile: convert to twd_local_timer_register() interface Add support for the new smp_twd runtime registration interface to the RealView/VE platforms, and remove the old compile-time support. Tested on EB11MP. Signed-off-by: Marc Zyngier diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c index 9578145..a2e9590 100644 --- a/arch/arm/mach-realview/realview_eb.c +++ b/arch/arm/mach-realview/realview_eb.c @@ -36,7 +36,7 @@ #include #include #include -#include +#include #include #include @@ -383,6 +383,23 @@ static void realview_eb11mp_fixup(void) realview_eb_isp1761_resources[1].end = IRQ_EB11MP_USB; } +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + REALVIEW_EB11MP_TWD_BASE, + IRQ_LOCALTIMER); + +static void __init realview_eb_twd_init(void) +{ + if (core_tile_eb11mp() || core_tile_a9mp()) { + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); + } +} +#else +#define realview_eb_twd_init() do { } while(0) +#endif + static void __init realview_eb_timer_init(void) { unsigned int timer_irq; @@ -392,15 +409,13 @@ static void __init realview_eb_timer_init(void) timer2_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE); timer3_va_base = __io_address(REALVIEW_EB_TIMER2_3_BASE) + 0x20; - if (core_tile_eb11mp() || core_tile_a9mp()) { -#ifdef CONFIG_LOCAL_TIMERS - twd_base = __io_address(REALVIEW_EB11MP_TWD_BASE); -#endif + if (core_tile_eb11mp() || core_tile_a9mp()) timer_irq = IRQ_EB11MP_TIMER0_1; - } else + else timer_irq = IRQ_EB_TIMER0_1; realview_timer_init(timer_irq); + realview_eb_twd_init(); } static struct sys_timer realview_eb_timer = { diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c index 2147335..3bea5bd 100644 --- a/arch/arm/mach-realview/realview_pb11mp.c +++ b/arch/arm/mach-realview/realview_pb11mp.c @@ -36,7 +36,7 @@ #include #include #include -#include +#include #include #include @@ -290,6 +290,21 @@ static void __init gic_init_irq(void) gic_cascade_irq(1, IRQ_TC11MP_PB_IRQ1); } +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + REALVIEW_TC11MP_TWD_BASE, + IRQ_LOCALTIMER); + +static void __init realview_pb11mp_twd_init(void) +{ + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +} +#else +#define realview_pb11mp_twd_init() do {} while(0) +#endif + static void __init realview_pb11mp_timer_init(void) { timer0_va_base = __io_address(REALVIEW_PB11MP_TIMER0_1_BASE); @@ -297,10 +312,8 @@ static void __init realview_pb11mp_timer_init(void) timer2_va_base = __io_address(REALVIEW_PB11MP_TIMER2_3_BASE); timer3_va_base = __io_address(REALVIEW_PB11MP_TIMER2_3_BASE) + 0x20; -#ifdef CONFIG_LOCAL_TIMERS - twd_base = __io_address(REALVIEW_TC11MP_TWD_BASE); -#endif realview_timer_init(IRQ_TC11MP_TIMER0_1); + realview_pb11mp_twd_init(); } static struct sys_timer realview_pb11mp_timer = { diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c index ac71564..6ddcc61 100644 --- a/arch/arm/mach-realview/realview_pbx.c +++ b/arch/arm/mach-realview/realview_pbx.c @@ -298,6 +298,21 @@ static void __init gic_init_irq(void) } } +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + REALVIEW_PBX_TILE_TWD_BASE, + IRQ_LOCALTIMER); + +static void __init realview_pbx_twd_init(void) +{ + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +} +#else +#define realview_pbx_twd_init() do { } while(0) +#endif + static void __init realview_pbx_timer_init(void) { timer0_va_base = __io_address(REALVIEW_PBX_TIMER0_1_BASE); @@ -305,11 +320,8 @@ static void __init realview_pbx_timer_init(void) timer2_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE); timer3_va_base = __io_address(REALVIEW_PBX_TIMER2_3_BASE) + 0x20; -#ifdef CONFIG_LOCAL_TIMERS - if (core_tile_pbx11mp() || core_tile_pbxa9mp()) - twd_base = __io_address(REALVIEW_PBX_TILE_TWD_BASE); -#endif realview_timer_init(IRQ_PBX_TIMER0_1); + realview_pbx_twd_init(); } static struct sys_timer realview_pbx_timer = { diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c index a2f7d5d..e5abe85 100644 --- a/arch/arm/mach-vexpress/ct-ca9x4.c +++ b/arch/arm/mach-vexpress/ct-ca9x4.c @@ -42,15 +42,26 @@ static struct map_desc ct_ca9x4_io_desc[] __initdata = { static void __init ct_ca9x4_map_io(void) { iotable_init(ct_ca9x4_io_desc, ARRAY_SIZE(ct_ca9x4_io_desc)); -#ifdef CONFIG_LOCAL_TIMERS - twd_base = ioremap(A9_MPCORE_TWD, SZ_32); -#endif } +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, A9_MPCORE_TWD, IRQ_LOCALTIMER); + +static void __init ca9x4_twd_init(void) +{ + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +} +#else +#define ca9x4_twd_init() do {} while(0) +#endif + static void __init ct_ca9x4_init_irq(void) { gic_init(0, 29, ioremap(A9_MPCORE_GIC_DIST, SZ_4K), ioremap(A9_MPCORE_GIC_CPU, SZ_256)); + ca9x4_twd_init(); } static void ct_ca9x4_clcd_enable(struct clcd_fb *fb) diff --git a/arch/arm/plat-versatile/Makefile b/arch/arm/plat-versatile/Makefile index 69714db..a5cb194 100644 --- a/arch/arm/plat-versatile/Makefile +++ b/arch/arm/plat-versatile/Makefile @@ -1,5 +1,4 @@ obj-y := clock.o -obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_PLAT_VERSATILE_CLCD) += clcd.o obj-$(CONFIG_PLAT_VERSATILE_FPGA_IRQ) += fpga-irq.o obj-$(CONFIG_PLAT_VERSATILE_LEDS) += leds.o diff --git a/arch/arm/plat-versatile/localtimer.c b/arch/arm/plat-versatile/localtimer.c deleted file mode 100644 index e156687..0000000 --- a/arch/arm/plat-versatile/localtimer.c +++ /dev/null @@ -1,53 +0,0 @@ -/* - * linux/arch/arm/plat-versatile/localtimer.c - * - * Copyright (C) 2002 ARM Ltd. - * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include -#include -#include -#include -#include - -#include -#include -#include - -const static struct of_device_id twd_of_match[] __initconst = { - { .compatible = "arm,cortex-a9-twd-timer", }, - { .compatible = "arm,cortex-a5-twd-timer", }, - { .compatible = "arm,arm11mp-twd-timer", }, - { }, -}; - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ -#if defined(CONFIG_OF) - static int dt_node_probed; - - /* Look for TWD node only once */ - if (!dt_node_probed) { - struct device_node *node = of_find_matching_node(NULL, - twd_of_match); - - if (node) - twd_base = of_iomap(node, 0); - - dt_node_probed = 1; - } -#endif - if (!twd_base) - return -ENXIO; - - evt->irq = IRQ_LOCALTIMER; - twd_timer_setup(evt); - return 0; -} -- cgit v0.10.2 From 1fcf3a6edde7aeef7a207f8209231dd340a4ea89 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:44:19 +0000 Subject: ARM: tegra: convert to twd_local_timer_register() interface Add support for the new smp_twd runtime registration interface to the tegra platforms, and remove the old compile-time support. Tested on Harmony. Acked-by: Stephen Warren Cc: Colin Cross Cc: Olof Johansson Signed-off-by: Marc Zyngier diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile index e120ff5..f7d0443 100644 --- a/arch/arm/mach-tegra/Makefile +++ b/arch/arm/mach-tegra/Makefile @@ -13,7 +13,7 @@ obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_emc.o obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += pinmux-tegra20-tables.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += pinmux-tegra30-tables.o obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += board-dt-tegra30.o -obj-$(CONFIG_SMP) += platsmp.o localtimer.o headsmp.o +obj-$(CONFIG_SMP) += platsmp.o headsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_TEGRA_SYSTEM_DMA) += dma.o obj-$(CONFIG_CPU_FREQ) += cpu-tegra.o diff --git a/arch/arm/mach-tegra/localtimer.c b/arch/arm/mach-tegra/localtimer.c deleted file mode 100644 index e91d681..0000000 --- a/arch/arm/mach-tegra/localtimer.c +++ /dev/null @@ -1,26 +0,0 @@ -/* - * arch/arm/mach-tegra/localtimer.c - * - * Copyright (C) 2002 ARM Ltd. - * All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include -#include -#include -#include -#include -#include - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - evt->irq = IRQ_LOCALTIMER; - twd_timer_setup(evt); - return 0; -} diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c index 1d1acda..1eed8d4 100644 --- a/arch/arm/mach-tegra/timer.c +++ b/arch/arm/mach-tegra/timer.c @@ -28,7 +28,7 @@ #include #include -#include +#include #include #include @@ -162,6 +162,21 @@ static struct irqaction tegra_timer_irq = { .irq = INT_TMR3, }; +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, + TEGRA_ARM_PERIF_BASE + 0x600, + IRQ_LOCALTIMER); + +static void __init tegra_twd_init(void) +{ + int err = twd_local_timer_register(&twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +} +#else +#define tegra_twd_init() do {} while(0) +#endif + static void __init tegra_init_timer(void) { struct clk *clk; @@ -188,10 +203,6 @@ static void __init tegra_init_timer(void) else clk_enable(clk); -#ifdef CONFIG_HAVE_ARM_TWD - twd_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x600); -#endif - switch (rate) { case 12000000: timer_writel(0x000b, TIMERUS_USEC_CFG); @@ -231,6 +242,7 @@ static void __init tegra_init_timer(void) tegra_clockevent.cpumask = cpu_all_mask; tegra_clockevent.irq = tegra_timer_irq.irq; clockevents_register_device(&tegra_clockevent); + tegra_twd_init(); } struct sys_timer tegra_timer = { -- cgit v0.10.2 From 4200b16d58cd34ff8e1616d8ed77417f8fc44864 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:44:19 +0000 Subject: ARM: shmobile: convert to twd_local_timer_register() interface Add support for the new smp_twd runtime registration interface to the shmobile platforms, and remove the old compile-time support. Cc: Magnus Damm Cc: Paul Mundt Signed-off-by: Marc Zyngier diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile index 7ad6954..e7c2590 100644 --- a/arch/arm/mach-shmobile/Makefile +++ b/arch/arm/mach-shmobile/Makefile @@ -16,7 +16,6 @@ obj-$(CONFIG_ARCH_R8A7779) += setup-r8a7779.o clock-r8a7779.o intc-r8a7779.o # SMP objects smp-y := platsmp.o headsmp.o smp-$(CONFIG_HOTPLUG_CPU) += hotplug.o -smp-$(CONFIG_LOCAL_TIMERS) += localtimer.o smp-$(CONFIG_ARCH_SH73A0) += smp-sh73a0.o smp-$(CONFIG_ARCH_R8A7779) += smp-r8a7779.o diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h index e4b945e..9fde3eb 100644 --- a/arch/arm/mach-shmobile/include/mach/common.h +++ b/arch/arm/mach-shmobile/include/mach/common.h @@ -2,6 +2,8 @@ #define __ARCH_MACH_COMMON_H extern struct sys_timer shmobile_timer; +struct twd_local_timer; +void shmobile_twd_init(struct twd_local_timer *twd_local_timer); extern void shmobile_setup_console(void); extern void shmobile_secondary_vector(void); extern int shmobile_platform_cpu_kill(unsigned int cpu); diff --git a/arch/arm/mach-shmobile/localtimer.c b/arch/arm/mach-shmobile/localtimer.c deleted file mode 100644 index ad9ccc9..0000000 --- a/arch/arm/mach-shmobile/localtimer.c +++ /dev/null @@ -1,26 +0,0 @@ -/* - * SMP support for R-Mobile / SH-Mobile - local timer portion - * - * Copyright (C) 2010 Magnus Damm - * - * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include -#include -#include -#include -#include - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - evt->irq = 29; - twd_timer_setup(evt); - return 0; -} diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c index 9933812..45fa392 100644 --- a/arch/arm/mach-shmobile/platsmp.c +++ b/arch/arm/mach-shmobile/platsmp.c @@ -17,7 +17,6 @@ #include #include #include -#include #include #include diff --git a/arch/arm/mach-shmobile/smp-r8a7779.c b/arch/arm/mach-shmobile/smp-r8a7779.c index 4fe2e9e..9bb7b857 100644 --- a/arch/arm/mach-shmobile/smp-r8a7779.c +++ b/arch/arm/mach-shmobile/smp-r8a7779.c @@ -64,6 +64,8 @@ static void __iomem *scu_base_addr(void) static DEFINE_SPINLOCK(scu_lock); static unsigned long tmp; +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29); + static void modify_scu_cpu_psr(unsigned long set, unsigned long clr) { void __iomem *scu_base = scu_base_addr(); @@ -82,11 +84,7 @@ unsigned int __init r8a7779_get_core_count(void) { void __iomem *scu_base = scu_base_addr(); -#ifdef CONFIG_HAVE_ARM_TWD - /* twd_base needs to be initialized before percpu_timer_setup() */ - twd_base = (void __iomem *)0xf0000600; -#endif - + shmobile_twd_init(&twd_local_timer); return scu_get_core_count(scu_base); } diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c index 0d159d6..2e68793 100644 --- a/arch/arm/mach-shmobile/smp-sh73a0.c +++ b/arch/arm/mach-shmobile/smp-sh73a0.c @@ -42,6 +42,8 @@ static void __iomem *scu_base_addr(void) static DEFINE_SPINLOCK(scu_lock); static unsigned long tmp; +static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29); + static void modify_scu_cpu_psr(unsigned long set, unsigned long clr) { void __iomem *scu_base = scu_base_addr(); @@ -60,11 +62,7 @@ unsigned int __init sh73a0_get_core_count(void) { void __iomem *scu_base = scu_base_addr(); -#ifdef CONFIG_HAVE_ARM_TWD - /* twd_base needs to be initialized before percpu_timer_setup() */ - twd_base = (void __iomem *)0xf0000600; -#endif - + shmobile_twd_init(&twd_local_timer); return scu_get_core_count(scu_base); } diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c index 895794b..be16231 100644 --- a/arch/arm/mach-shmobile/timer.c +++ b/arch/arm/mach-shmobile/timer.c @@ -20,6 +20,7 @@ */ #include #include +#include static void __init shmobile_late_time_init(void) { @@ -41,6 +42,15 @@ static void __init shmobile_timer_init(void) late_time_init = shmobile_late_time_init; } +void __init shmobile_twd_init(struct twd_local_timer *twd_local_timer) +{ +#ifdef CONFIG_HAVE_ARM_TWD + int err = twd_local_timer_register(twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +#endif +} + struct sys_timer shmobile_timer = { .init = shmobile_timer_init, }; -- cgit v0.10.2 From 08efd6ca6fae8ee22617b8d9d3f87d4e4cd56dab Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:44:19 +0000 Subject: ARM: ux500: convert to twd_local_timer_register() interface Add support for the new smp_twd runtime registration interface to the ux500 platforms, and remove the old compile-time support. Acked-by: Linus Walleij Signed-off-by: Marc Zyngier diff --git a/arch/arm/mach-ux500/Makefile b/arch/arm/mach-ux500/Makefile index 6bd2f45..35b3894 100644 --- a/arch/arm/mach-ux500/Makefile +++ b/arch/arm/mach-ux500/Makefile @@ -15,7 +15,6 @@ obj-$(CONFIG_MACH_U8500) += board-mop500.o board-mop500-sdi.o \ obj-$(CONFIG_MACH_U5500) += board-u5500.o board-u5500-sdi.o obj-$(CONFIG_SMP) += platsmp.o headsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o -obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_U5500_MODEM_IRQ) += modem-irq-db5500.o obj-$(CONFIG_U5500_MBOX) += mbox-db5500.o diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c index f418574..851308b 100644 --- a/arch/arm/mach-ux500/cpu.c +++ b/arch/arm/mach-ux500/cpu.c @@ -14,7 +14,6 @@ #include #include -#include #include #include diff --git a/arch/arm/mach-ux500/localtimer.c b/arch/arm/mach-ux500/localtimer.c deleted file mode 100644 index 5ba1133..0000000 --- a/arch/arm/mach-ux500/localtimer.c +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright (C) 2008-2009 ST-Ericsson - * Srinidhi Kasagar - * - * This file is heavily based on relaview platform, almost a copy. - * - * Copyright (C) 2002 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include -#include -#include - -#include -#include -#include - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - evt->irq = IRQ_LOCALTIMER; - twd_timer_setup(evt); - return 0; -} diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c index fd00024..fbeed7e 100644 --- a/arch/arm/mach-ux500/timer.c +++ b/arch/arm/mach-ux500/timer.c @@ -8,28 +8,45 @@ #include #include -#include +#include #include #include #include +#ifdef CONFIG_HAVE_ARM_TWD +static DEFINE_TWD_LOCAL_TIMER(u5500_twd_local_timer, + U5500_TWD_BASE, IRQ_LOCALTIMER); +static DEFINE_TWD_LOCAL_TIMER(u8500_twd_local_timer, + U8500_TWD_BASE, IRQ_LOCALTIMER); + +static void __init ux500_twd_init(void) +{ + struct twd_local_timer *twd_local_timer; + int err; + + twd_local_timer = cpu_is_u5500() ? &u5500_twd_local_timer : + &u8500_twd_local_timer; + + err = twd_local_timer_register(twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); +} +#else +#define ux500_twd_init() do { } while(0) +#endif + static void __init ux500_timer_init(void) { void __iomem *mtu_timer_base; void __iomem *prcmu_timer_base; + int err; if (cpu_is_u5500()) { -#ifdef CONFIG_LOCAL_TIMERS - twd_base = __io_address(U5500_TWD_BASE); -#endif mtu_timer_base = __io_address(U5500_MTU0_BASE); prcmu_timer_base = __io_address(U5500_PRCMU_TIMER_3_BASE); } else if (cpu_is_u8500()) { -#ifdef CONFIG_LOCAL_TIMERS - twd_base = __io_address(U8500_TWD_BASE); -#endif mtu_timer_base = __io_address(U8500_MTU0_BASE); prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE); } else { @@ -55,6 +72,7 @@ static void __init ux500_timer_init(void) nmdk_timer_init(mtu_timer_base); clksrc_dbx500_prcmu_init(prcmu_timer_base); + ux500_twd_init(); } static void ux500_timer_reset(void) -- cgit v0.10.2 From 7ac9b9eb338d3960fbc044cb76790f4aab4fbb22 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:44:19 +0000 Subject: ARM: highbank: convert to twd_local_timer_register() interface Add support for the new smp_twd runtime registration interface to the highbank platforms, and remove the old compile-time support. The highbank DTS file is updated to match the TWD DT documentation and fixes the timer trigger (rising edge). Acked-by: Rob Herring Signed-off-by: Marc Zyngier diff --git a/arch/arm/boot/dts/highbank.dts b/arch/arm/boot/dts/highbank.dts index 305635b..37c0ff9c 100644 --- a/arch/arm/boot/dts/highbank.dts +++ b/arch/arm/boot/dts/highbank.dts @@ -72,15 +72,15 @@ ranges; timer@fff10600 { - compatible = "arm,smp-twd"; + compatible = "arm,cortex-a9-twd-timer"; reg = <0xfff10600 0x20>; - interrupts = <1 13 0xf04>; + interrupts = <1 13 0xf01>; }; watchdog@fff10620 { - compatible = "arm,cortex-a9-wdt"; + compatible = "arm,cortex-a9-twd-wdt"; reg = <0xfff10620 0x20>; - interrupts = <1 14 0xf04>; + interrupts = <1 14 0xf01>; }; intc: interrupt-controller@fff11000 { diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile index 986958a..f8437dd 100644 --- a/arch/arm/mach-highbank/Makefile +++ b/arch/arm/mach-highbank/Makefile @@ -1,6 +1,5 @@ obj-y := clock.o highbank.o system.o obj-$(CONFIG_DEBUG_HIGHBANK_UART) += lluart.o obj-$(CONFIG_SMP) += platsmp.o -obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_PM_SLEEP) += pm.o diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c index 8394d51..bb1684f 100644 --- a/arch/arm/mach-highbank/highbank.c +++ b/arch/arm/mach-highbank/highbank.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -111,6 +112,8 @@ static void __init highbank_timer_init(void) sp804_clocksource_init(timer_base + 0x20, "timer1"); sp804_clockevents_init(timer_base, irq, "timer0"); + + twd_local_timer_of_register(); } static struct sys_timer highbank_timer = { diff --git a/arch/arm/mach-highbank/localtimer.c b/arch/arm/mach-highbank/localtimer.c deleted file mode 100644 index 5a00e79..0000000 --- a/arch/arm/mach-highbank/localtimer.c +++ /dev/null @@ -1,40 +0,0 @@ -/* - * Copyright 2010-2011 Calxeda, Inc. - * Based on localtimer.c, Copyright (C) 2002 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see . - */ -#include -#include -#include -#include -#include - -#include - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - struct device_node *np; - - np = of_find_compatible_node(NULL, NULL, "arm,smp-twd"); - if (!twd_base) { - twd_base = of_iomap(np, 0); - WARN_ON(!twd_base); - } - evt->irq = irq_of_parse_and_map(np, 0); - twd_timer_setup(evt); - return 0; -} -- cgit v0.10.2 From 58458e0327f7a34ef9c8bc512290bf47e3de811b Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:44:19 +0000 Subject: ARM: imx6q: convert to twd_local_timer_register() interface Add support for the new smp_twd runtime registration interface to the imx6q platforms, and remove the old compile-time support. The imx6q DTS file is updated to match the TWD DT documentation. Also present in this patch a DTS fix to the timer interrupt routing (the PPI connection uses bits [15:8]) and trigger (rising edge). Acked-by: Shawn Guo Signed-off-by: Marc Zyngier diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi index 263e8f3..4905f51 100644 --- a/arch/arm/boot/dts/imx6q.dtsi +++ b/arch/arm/boot/dts/imx6q.dtsi @@ -88,9 +88,9 @@ ranges; timer@00a00600 { - compatible = "arm,smp-twd"; - reg = <0x00a00600 0x100>; - interrupts = <1 13 0xf4>; + compatible = "arm,cortex-a9-twd-timer"; + reg = <0x00a00600 0x20>; + interrupts = <1 13 0xf01>; }; L2: l2-cache@00a02000 { diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index 55db9c4..190d570 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -71,7 +71,6 @@ obj-$(CONFIG_CPU_V7) += head-v7.o AFLAGS_head-v7.o :=-Wa,-march=armv7-a obj-$(CONFIG_SMP) += platsmp.o obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o -obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o mach-imx6q.o ifeq ($(CONFIG_PM),y) diff --git a/arch/arm/mach-imx/localtimer.c b/arch/arm/mach-imx/localtimer.c deleted file mode 100644 index 3a16351..0000000 --- a/arch/arm/mach-imx/localtimer.c +++ /dev/null @@ -1,35 +0,0 @@ -/* - * Copyright 2011 Freescale Semiconductor, Inc. - * Copyright 2011 Linaro Ltd. - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html - */ - -#include -#include -#include -#include -#include - -/* - * Setup the local clock events for a CPU. - */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - struct device_node *np; - - np = of_find_compatible_node(NULL, NULL, "arm,smp-twd"); - if (!twd_base) { - twd_base = of_iomap(np, 0); - WARN_ON(!twd_base); - } - evt->irq = irq_of_parse_and_map(np, 0); - twd_timer_setup(evt); - - return 0; -} diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index c257281..a2eea86 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -119,6 +120,7 @@ static void __init imx6q_init_irq(void) static void __init imx6q_timer_init(void) { mx6q_clocks_init(); + twd_local_timer_of_register(); } static struct sys_timer imx6q_timer = { -- cgit v0.10.2 From 9248510469b46bc17b90cf62cb8d9e7c9a5f9965 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 23:00:54 +0000 Subject: ARM: smp_twd: remove old local timer interface Now that all users of the previous local timer interface have been converted to the runtime registration API, make this interface the only one supported for this driver. Signed-off-by: Marc Zyngier diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h index f088d63..955eed1 100644 --- a/arch/arm/include/asm/localtimer.h +++ b/arch/arm/include/asm/localtimer.h @@ -11,7 +11,6 @@ #define __ASM_ARM_LOCALTIMER_H #include -#include struct clock_event_device; @@ -26,13 +25,6 @@ struct local_timer_ops { void percpu_timer_setup(void); #ifdef CONFIG_LOCAL_TIMERS - -#ifdef CONFIG_HAVE_ARM_TWD - -#include "smp_twd.h" - -#endif - /* * Stop the local timer */ diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h index 8047e6e..0f01f46 100644 --- a/arch/arm/include/asm/smp_twd.h +++ b/arch/arm/include/asm/smp_twd.h @@ -20,12 +20,6 @@ #include -struct clock_event_device; - -extern void __iomem *twd_base; - -int twd_timer_setup(struct clock_event_device *); - struct twd_local_timer { struct resource res[2]; }; diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 761826c..a622e7a 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -18,7 +18,7 @@ #include #include #include -#include +#include #include #include #include @@ -28,7 +28,7 @@ #include /* set up by the platform code */ -void __iomem *twd_base; +static void __iomem *twd_base; static struct clk *twd_clk; static unsigned long twd_timer_rate; @@ -80,7 +80,7 @@ static int twd_set_next_event(unsigned long evt, * If a local timer interrupt has occurred, acknowledge and return 1. * Otherwise, return 0. */ -int twd_timer_ack(void) +static int twd_timer_ack(void) { if (__raw_readl(twd_base + TWD_TIMER_INTSTAT)) { __raw_writel(1, twd_base + TWD_TIMER_INTSTAT); @@ -96,11 +96,6 @@ static void twd_timer_stop(struct clock_event_device *clk) disable_percpu_irq(clk->irq); } -/* Temporary hack to be removed when all TWD users are converted to - the new registration interface */ -void local_timer_stop(struct clock_event_device *clk) - __attribute__ ((alias ("twd_timer_stop"))); - #ifdef CONFIG_CPU_FREQ /* @@ -230,28 +225,10 @@ static struct clk *twd_get_clock(void) /* * Setup the local clock events for a CPU. */ -int __cpuinit twd_timer_setup(struct clock_event_device *clk) +static int __cpuinit twd_timer_setup(struct clock_event_device *clk) { struct clock_event_device **this_cpu_clk; - if (!twd_evt) { - int err; - - twd_evt = alloc_percpu(struct clock_event_device *); - if (!twd_evt) { - pr_err("twd: can't allocate memory\n"); - return -ENOMEM; - } - - err = request_percpu_irq(clk->irq, twd_handler, - "twd", twd_evt); - if (err) { - pr_err("twd: can't register interrupt %d (%d)\n", - clk->irq, err); - return err; - } - } - if (!twd_clk) twd_clk = twd_get_clock(); @@ -268,8 +245,7 @@ int __cpuinit twd_timer_setup(struct clock_event_device *clk) clk->rating = 350; clk->set_mode = twd_set_mode; clk->set_next_event = twd_set_next_event; - if (!clk->irq) - clk->irq = twd_ppi; + clk->irq = twd_ppi; this_cpu_clk = __this_cpu_ptr(twd_evt); *this_cpu_clk = clk; -- cgit v0.10.2 From a8cb6041d0ade808e0173f1e1ca1c92c67979806 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:44:19 +0000 Subject: ARM: local timers: convert exynos to runtime registration interface Convert the Exynos MCT timers to the runtime registration interface. Tested on Origen. Cc: Kukjin Kim Signed-off-by: Marc Zyngier diff --git a/arch/arm/mach-exynos/mct.c b/arch/arm/mach-exynos/mct.c index 85b5527..edc4b94 100644 --- a/arch/arm/mach-exynos/mct.c +++ b/arch/arm/mach-exynos/mct.c @@ -21,6 +21,7 @@ #include #include +#include #include @@ -375,7 +376,7 @@ static struct irqaction mct_tick1_event_irq = { .handler = exynos4_mct_tick_isr, }; -static void exynos4_mct_tick_init(struct clock_event_device *evt) +static int __cpuinit exynos4_local_timer_setup(struct clock_event_device *evt) { struct mct_clock_event_device *mevt; unsigned int cpu = smp_processor_id(); @@ -417,17 +418,11 @@ static void exynos4_mct_tick_init(struct clock_event_device *evt) } else { enable_percpu_irq(IRQ_MCT_LOCALTIMER, 0); } -} - -/* Setup the local clock events for a CPU */ -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - exynos4_mct_tick_init(evt); return 0; } -void local_timer_stop(struct clock_event_device *evt) +static void exynos4_local_timer_stop(struct clock_event_device *evt) { unsigned int cpu = smp_processor_id(); evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt); @@ -439,6 +434,11 @@ void local_timer_stop(struct clock_event_device *evt) else disable_percpu_irq(IRQ_MCT_LOCALTIMER); } + +static struct local_timer_ops exynos4_mct_tick_ops __cpuinitdata = { + .setup = exynos4_local_timer_setup, + .stop = exynos4_local_timer_stop, +}; #endif /* CONFIG_LOCAL_TIMERS */ static void __init exynos4_timer_resources(void) @@ -458,6 +458,8 @@ static void __init exynos4_timer_resources(void) WARN(err, "MCT: can't request IRQ %d (%d)\n", IRQ_MCT_LOCALTIMER, err); } + + local_timer_register(&exynos4_mct_tick_ops); #endif /* CONFIG_LOCAL_TIMERS */ } -- cgit v0.10.2 From 5ca709c16d0fb88b86db35e958b165b61cbc1962 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 19:44:19 +0000 Subject: ARM: local timers: convert MSM to runtime registration interface Convert the MSM timers to the runtime registration interface. Acked-by: Stephen Boyd Tested-by: David Brown Acked-by: David Brown Signed-off-by: Marc Zyngier diff --git a/arch/arm/mach-msm/timer.c b/arch/arm/mach-msm/timer.c index 11d0d8f..75f4be4 100644 --- a/arch/arm/mach-msm/timer.c +++ b/arch/arm/mach-msm/timer.c @@ -127,6 +127,45 @@ static struct clocksource msm_clocksource = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; +#ifdef CONFIG_LOCAL_TIMERS +static int __cpuinit msm_local_timer_setup(struct clock_event_device *evt) +{ + /* Use existing clock_event for cpu 0 */ + if (!smp_processor_id()) + return 0; + + writel_relaxed(0, event_base + TIMER_ENABLE); + writel_relaxed(0, event_base + TIMER_CLEAR); + writel_relaxed(~0, event_base + TIMER_MATCH_VAL); + evt->irq = msm_clockevent.irq; + evt->name = "local_timer"; + evt->features = msm_clockevent.features; + evt->rating = msm_clockevent.rating; + evt->set_mode = msm_timer_set_mode; + evt->set_next_event = msm_timer_set_next_event; + evt->shift = msm_clockevent.shift; + evt->mult = div_sc(GPT_HZ, NSEC_PER_SEC, evt->shift); + evt->max_delta_ns = clockevent_delta2ns(0xf0000000, evt); + evt->min_delta_ns = clockevent_delta2ns(4, evt); + + *__this_cpu_ptr(msm_evt.percpu_evt) = evt; + clockevents_register_device(evt); + enable_percpu_irq(evt->irq, 0); + return 0; +} + +static void msm_local_timer_stop(struct clock_event_device *evt) +{ + evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt); + disable_percpu_irq(evt->irq); +} + +static struct local_timer_ops msm_local_timer_ops __cpuinitdata = { + .setup = msm_local_timer_setup, + .stop = msm_local_timer_stop, +}; +#endif /* CONFIG_LOCAL_TIMERS */ + static void __init msm_timer_init(void) { struct clock_event_device *ce = &msm_clockevent; @@ -173,8 +212,12 @@ static void __init msm_timer_init(void) *__this_cpu_ptr(msm_evt.percpu_evt) = ce; res = request_percpu_irq(ce->irq, msm_timer_interrupt, ce->name, msm_evt.percpu_evt); - if (!res) + if (!res) { enable_percpu_irq(ce->irq, 0); +#ifdef CONFIG_LOCAL_TIMERS + local_timer_register(&msm_local_timer_ops); +#endif + } } else { msm_evt.evt = ce; res = request_irq(ce->irq, msm_timer_interrupt, @@ -191,40 +234,6 @@ err: pr_err("clocksource_register failed\n"); } -#ifdef CONFIG_LOCAL_TIMERS -int __cpuinit local_timer_setup(struct clock_event_device *evt) -{ - /* Use existing clock_event for cpu 0 */ - if (!smp_processor_id()) - return 0; - - writel_relaxed(0, event_base + TIMER_ENABLE); - writel_relaxed(0, event_base + TIMER_CLEAR); - writel_relaxed(~0, event_base + TIMER_MATCH_VAL); - evt->irq = msm_clockevent.irq; - evt->name = "local_timer"; - evt->features = msm_clockevent.features; - evt->rating = msm_clockevent.rating; - evt->set_mode = msm_timer_set_mode; - evt->set_next_event = msm_timer_set_next_event; - evt->shift = msm_clockevent.shift; - evt->mult = div_sc(GPT_HZ, NSEC_PER_SEC, evt->shift); - evt->max_delta_ns = clockevent_delta2ns(0xf0000000, evt); - evt->min_delta_ns = clockevent_delta2ns(4, evt); - - *__this_cpu_ptr(msm_evt.percpu_evt) = evt; - clockevents_register_device(evt); - enable_percpu_irq(evt->irq, 0); - return 0; -} - -void local_timer_stop(struct clock_event_device *evt) -{ - evt->set_mode(CLOCK_EVT_MODE_UNUSED, evt); - disable_percpu_irq(evt->irq); -} -#endif /* CONFIG_LOCAL_TIMERS */ - struct sys_timer msm_timer = { .init = msm_timer_init }; -- cgit v0.10.2 From d45785929f1248d2e769f959f180f0504e326622 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 10 Jan 2012 23:38:25 +0000 Subject: ARM: local timers: make the runtime registration interface mandatory Remove all traces of the compile-time local timer interface, and make the runtime selection mandatory. Signed-off-by: Marc Zyngier diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h index 955eed1..f77ffc1 100644 --- a/arch/arm/include/asm/localtimer.h +++ b/arch/arm/include/asm/localtimer.h @@ -19,38 +19,12 @@ struct local_timer_ops { void (*stop)(struct clock_event_device *); }; -/* - * Setup a per-cpu timer, whether it be a local timer or dummy broadcast - */ -void percpu_timer_setup(void); - #ifdef CONFIG_LOCAL_TIMERS /* - * Stop the local timer - */ -void local_timer_stop(struct clock_event_device *); - -/* - * Setup a local timer interrupt for a CPU. - */ -int local_timer_setup(struct clock_event_device *); - -/* * Register a local timer driver */ int local_timer_register(struct local_timer_ops *); - #else - -static inline int local_timer_setup(struct clock_event_device *evt) -{ - return -ENXIO; -} - -static inline void local_timer_stop(struct clock_event_device *evt) -{ -} - static inline int local_timer_register(struct local_timer_ops *ops) { return -ENXIO; diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 89bb02c..1ad84a6 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -246,6 +246,8 @@ static void __cpuinit smp_store_cpu_info(unsigned int cpuid) store_cpu_topology(cpuid); } +static void percpu_timer_setup(void); + /* * This is the secondary CPU boot entry. We're using this CPUs * idle thread stack, but a set of temporary page tables. @@ -472,21 +474,7 @@ int local_timer_register(struct local_timer_ops *ops) } #endif -int __cpuinit __attribute__ ((weak)) local_timer_setup(struct clock_event_device *clk) -{ - if (lt_ops) - return lt_ops->setup(clk); - - return -ENXIO; -} - -void __attribute__ ((weak)) local_timer_stop(struct clock_event_device *clk) -{ - if (lt_ops) - lt_ops->stop(clk); -} - -void __cpuinit percpu_timer_setup(void) +static void __cpuinit percpu_timer_setup(void) { unsigned int cpu = smp_processor_id(); struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu); @@ -494,7 +482,7 @@ void __cpuinit percpu_timer_setup(void) evt->cpumask = cpumask_of(cpu); evt->broadcast = smp_timer_broadcast; - if (local_timer_setup(evt)) + if (!lt_ops || lt_ops->setup(evt)) broadcast_timer_setup(evt); } @@ -509,7 +497,8 @@ static void percpu_timer_stop(void) unsigned int cpu = smp_processor_id(); struct clock_event_device *evt = &per_cpu(percpu_clockevent, cpu); - local_timer_stop(evt); + if (lt_ops) + lt_ops->stop(evt); } #endif -- cgit v0.10.2 From 218a28014112b20bd15a9e6305c8b46488830bc4 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 15 Mar 2012 11:05:39 +0000 Subject: ARM: ux500: fix compilation after local timer rework mach-ux500/timer.c lacked the inclusion of mach/irqs.h, and thus failed to compile. Fix it and also remove an unused variable. Test compiled only. Reported-by: Lee Jones Cc: Arnd Bergman Cc: Linus Walleij Signed-off-by: Marc Zyngier diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c index fbeed7e..e9d5807 100644 --- a/arch/arm/mach-ux500/timer.c +++ b/arch/arm/mach-ux500/timer.c @@ -14,6 +14,7 @@ #include #include +#include #ifdef CONFIG_HAVE_ARM_TWD static DEFINE_TWD_LOCAL_TIMER(u5500_twd_local_timer, @@ -41,7 +42,6 @@ static void __init ux500_timer_init(void) { void __iomem *mtu_timer_base; void __iomem *prcmu_timer_base; - int err; if (cpu_is_u5500()) { mtu_timer_base = __io_address(U5500_MTU0_BASE); -- cgit v0.10.2 From e27fc6cf84a401e62144a522695f114c9bdbebb7 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Fri, 2 Mar 2012 21:51:38 +0000 Subject: ARM: ux500: CONFIG: Enable Device Tree support for future endeavours Acked-by: Linus Walleij Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig index 2d7b6e7..889d73a 100644 --- a/arch/arm/configs/u8500_defconfig +++ b/arch/arm/configs/u8500_defconfig @@ -13,6 +13,7 @@ CONFIG_UX500_SOC_DB8500=y CONFIG_MACH_HREFV60=y CONFIG_MACH_SNOWBALL=y CONFIG_MACH_U5500=y +CONFIG_MACH_UX500_DT=y CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y CONFIG_SMP=y diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig index 5cfa539..afb3706 100644 --- a/arch/arm/mach-ux500/Kconfig +++ b/arch/arm/mach-ux500/Kconfig @@ -50,6 +50,12 @@ config MACH_U5500 depends on UX500_SOC_DB5500 help Include support for the U5500 development platform. + +config MACH_UX500_DT + bool "Generic U8500 support using device tree" + depends on MACH_U8500 + select USE_OF + endmenu config UX500_DEBUG_UART -- cgit v0.10.2 From 2d334297c6b816619d6c2c28bccec3b5a7e8a0d9 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 7 Mar 2012 15:04:07 +0000 Subject: ARM: ux500: Initial Device Tree support for Snowball This provides very basic Device Tree support for ST-Ericsson's low-cost development platform, Snowball. If Device Tree for ux500 is enabled and the correct board is configured within the Device Tree blob, the correct *_init_machine() will be called. This patch is based on some original work completed by: Niklas Hernaeus Acked-by: Linus Walleij Signed-off-by: Niklas Hernaeus Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts new file mode 100644 index 0000000..ebcff9a --- /dev/null +++ b/arch/arm/boot/dts/snowball.dts @@ -0,0 +1,31 @@ +/* + * Copyright 2011 ST-Ericsson AB + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/dts-v1/; + +/ { + model = "Calao Systems Snowball platform with device tree"; + compatible = "calaosystems,snowball-a9500"; + + #address-cells = <1>; + #size-cells = <1>; + + memory { + reg = <0x00000000 0x20000000>; + }; + + soc-u9500 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "simple-bus"; + ranges; + }; +}; diff --git a/arch/arm/mach-ux500/Makefile.boot b/arch/arm/mach-ux500/Makefile.boot index ff0a4b5..dd5cd00 100644 --- a/arch/arm/mach-ux500/Makefile.boot +++ b/arch/arm/mach-ux500/Makefile.boot @@ -2,3 +2,4 @@ params_phys-y := 0x00000100 initrd_phys-y := 0x00800000 +dtb-$(CONFIG_MACH_SNOWBALL) += snowball.dtb diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 04afcdf..0fb5dfd 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -30,6 +30,9 @@ #include #include +#include +#include + #include #include #include @@ -738,3 +741,34 @@ MACHINE_START(SNOWBALL, "Calao Systems Snowball platform") .handle_irq = gic_handle_irq, .init_machine = snowball_init_machine, MACHINE_END + +#ifdef CONFIG_MACH_UX500_DT +static void __init u8500_init_machine(void) +{ + if (of_machine_is_compatible("calaosystems,snowball-a9500")) + return snowball_init_machine(); + else if (of_machine_is_compatible("st-ericsson,hrefv60+")) + return hrefv60_init_machine(); + else if (of_machine_is_compatible("st-ericsson,mop500")) + return mop500_init_machine(); +} + +static const char * u8500_dt_board_compat[] = { + "calaosystems,snowball-a9500", + "st-ericsson,hrefv60+", + "st-ericsson,u8500", + "st-ericsson,mop500", + NULL, +}; + + +DT_MACHINE_START(U8500_DT, "ST-Ericsson U8500 platform (Device Tree Support)") + .map_io = u8500_map_io, + .init_irq = ux500_init_irq, + /* we re-use nomadik timer here */ + .timer = &ux500_timer, + .handle_irq = gic_handle_irq, + .init_machine = u8500_init_machine, + .dt_compat = u8500_dt_board_compat, +MACHINE_END +#endif -- cgit v0.10.2 From 7734fed8988d9c563e88f50e48c7b808ce3ab3e5 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 2 Mar 2012 22:25:02 +0000 Subject: ARM: ux500: combine the board init functions for DT boot This lets us move over evertything to device tree one by one. Acked-by: Linus Walleij Signed-off-by: Arnd Bergmann Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 0fb5dfd..e2932fc 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -745,12 +745,57 @@ MACHINE_END #ifdef CONFIG_MACH_UX500_DT static void __init u8500_init_machine(void) { - if (of_machine_is_compatible("calaosystems,snowball-a9500")) - return snowball_init_machine(); - else if (of_machine_is_compatible("st-ericsson,hrefv60+")) - return hrefv60_init_machine(); - else if (of_machine_is_compatible("st-ericsson,mop500")) - return mop500_init_machine(); + struct device *parent = NULL; + int i2c0_devs; + int i; + + parent = u8500_init_devices(); + i2c0_devs = ARRAY_SIZE(mop500_i2c0_devices); + + for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++) + mop500_platform_devs[i]->dev.parent = parent; + for (i = 0; i < ARRAY_SIZE(snowball_platform_devs); i++) + snowball_platform_devs[i]->dev.parent = parent; + + + if (of_machine_is_compatible("st-ericsson,mop500")) { + mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR; + mop500_pins_init(); + + platform_add_devices(mop500_platform_devs, + ARRAY_SIZE(mop500_platform_devs)); + + mop500_sdi_init(parent); + } else if (of_machine_is_compatible("calaosystems,snowball-a9500")) { + snowball_pins_init(); + platform_add_devices(snowball_platform_devs, + ARRAY_SIZE(snowball_platform_devs)); + + snowball_sdi_init(parent); + } else if (of_machine_is_compatible("st-ericsson,hrefv60+")) { + /* + * The HREFv60 board removed a GPIO expander and routed + * all these GPIO pins to the internal GPIO controller + * instead. + */ + mop500_gpio_keys[0].gpio = HREFV60_PROX_SENSE_GPIO; + i2c0_devs -= NUM_PRE_V60_I2C0_DEVICES; + hrefv60_pins_init(); + platform_add_devices(mop500_platform_devs, + ARRAY_SIZE(mop500_platform_devs)); + + hrefv60_sdi_init(parent); + } + mop500_i2c_init(parent); + mop500_spi_init(parent); + mop500_uart_init(parent); + + i2c_register_board_info(0, mop500_i2c0_devices, i2c0_devs); + i2c_register_board_info(2, mop500_i2c2_devices, + ARRAY_SIZE(mop500_i2c2_devices)); + + /* This board has full regulator constraints */ + regulator_has_full_constraints(); } static const char * u8500_dt_board_compat[] = { -- cgit v0.10.2 From 5d0769f063c87ff4a3d123e4e256f5b19c9e68bd Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 2 Mar 2012 23:07:21 +0000 Subject: ARM: ux500: split dts file for snowball into generic part db8500.dtsi can be used by all systems with a db8500 or db9500 SoC, while snowball.dts is board specific. Acked-by: Linus Walleij Signed-off-by: Arnd Bergmann Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/boot/dts/db8500.dtsi b/arch/arm/boot/dts/db8500.dtsi new file mode 100644 index 0000000..50c84b2 --- /dev/null +++ b/arch/arm/boot/dts/db8500.dtsi @@ -0,0 +1,21 @@ +/* + * Copyright 2012 Linaro Ltd + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/include/ "skeleton.dtsi" + +/ { + soc-u9500 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "simple-bus"; + ranges; + }; +}; diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts index ebcff9a..0ea9470 100644 --- a/arch/arm/boot/dts/snowball.dts +++ b/arch/arm/boot/dts/snowball.dts @@ -10,22 +10,16 @@ */ /dts-v1/; +/include/ "db8500.dtsi" / { model = "Calao Systems Snowball platform with device tree"; compatible = "calaosystems,snowball-a9500"; - #address-cells = <1>; - #size-cells = <1>; - memory { reg = <0x00000000 0x20000000>; }; soc-u9500 { - #address-cells = <1>; - #size-cells = <1>; - compatible = "simple-bus"; - ranges; }; }; -- cgit v0.10.2 From 7e0ce270b2ef3d0d00c3f0725f48aa3127d73edf Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 15 Mar 2012 16:46:17 +0000 Subject: ARM: ux500: db8500: list most devices in the snowball device tree This adds all devices that are normally present through the u8500_init_machine function in the device tree as well, which will duplicate the devices that are visible. This will not do much by itself because the device from the device tree are not matched by any device driver until they are converted as well. The next step is to move over one device at a time to actually be used from the device tree instead of the hardcoded device using auxdata to pass the correct platform_data. Acked-by: Linus Walleij Signed-off-by: Arnd Bergmann Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/boot/dts/db8500.dtsi b/arch/arm/boot/dts/db8500.dtsi index 50c84b2..67423e4 100644 --- a/arch/arm/boot/dts/db8500.dtsi +++ b/arch/arm/boot/dts/db8500.dtsi @@ -15,7 +15,233 @@ soc-u9500 { #address-cells = <1>; #size-cells = <1>; - compatible = "simple-bus"; + compatible = "stericsson,db8500"; ranges; + + pmu { + compatible = "arm,cortex-a9-pmu"; + interrupts = <0 7 0x4>; + }; + + rtc@80154000 { + compatible = "stericsson,db8500-rtc"; + reg = <0x80154000 0x1000>; + interrupts = <0 18 0x4>; + }; + + gpio0: gpio@8012e000 { + compatible = "stericsson,db8500-gpio", + "stmicroelectronics,nomadik-gpio"; + reg = <0x8012e000 0x80>; + interrupts = <0 119 0x4>; + supports-sleepmode; + gpio-controller; + }; + + gpio1: gpio@8012e080 { + compatible = "stericsson,db8500-gpio", + "stmicroelectronics,nomadik-gpio"; + reg = <0x8012e080 0x80>; + interrupts = <0 120 0x4>; + supports-sleepmode; + gpio-controller; + }; + + gpio2: gpio@8000e000 { + compatible = "stericsson,db8500-gpio", + "stmicroelectronics,nomadik-gpio"; + reg = <0x8000e000 0x80>; + interrupts = <0 121 0x4>; + supports-sleepmode; + gpio-controller; + }; + + gpio3: gpio@8000e080 { + compatible = "stericsson,db8500-gpio", + "stmicroelectronics,nomadik-gpio"; + reg = <0x8000e080 0x80>; + interrupts = <0 122 0x4>; + supports-sleepmode; + gpio-controller; + }; + + gpio4: gpio@8000e100 { + compatible = "stericsson,db8500-gpio", + "stmicroelectronics,nomadik-gpio"; + reg = <0x8000e100 0x80>; + interrupts = <0 123 0x4>; + supports-sleepmode; + gpio-controller; + }; + + gpio5: gpio@8000e180 { + compatible = "stericsson,db8500-gpio", + "stmicroelectronics,nomadik-gpio"; + reg = <0x8000e180 0x80>; + interrupts = <0 124 0x4>; + supports-sleepmode; + gpio-controller; + }; + + gpio6: gpio@8011e000 { + compatible = "stericsson,db8500-gpio", + "stmicroelectronics,nomadik-gpio"; + reg = <0x8011e000 0x80>; + interrupts = <0 125 0x4>; + supports-sleepmode; + gpio-controller; + }; + + gpio7: gpio@8011e080 { + compatible = "stericsson,db8500-gpio", + "stmicroelectronics,nomadik-gpio"; + reg = <0x8011e080 0x80>; + interrupts = <0 126 0x4>; + supports-sleepmode; + gpio-controller; + }; + + gpio8: gpio@a03fe000 { + compatible = "stericsson,db8500-gpio", + "stmicroelectronics,nomadik-gpio"; + reg = <0xa03fe000 0x80>; + interrupts = <0 127 0x4>; + supports-sleepmode; + gpio-controller; + }; + + usb@a03e0000 { + compatible = "stericsson,db8500-musb", + "mentor,musb"; + reg = <0xa03e0000 0x10000>; + interrupts = <0 23 0x4>; + }; + + dma-controller@801C0000 { + compatible = "stericsson,db8500-dma40", + "stericsson,dma40"; + reg = <0x801C0000 0x1000 0x40010000 0x800>; + interrupts = <0 25 0x4>; + }; + + prcmu@80157000 { + compatible = "stericsson,db8500-prcmu"; + reg = <0x80157000 0x1000>; + interrupts = <46 47>; + #address-cells = <1>; + #size-cells = <0>; + + ab8500@5 { + compatible = "stericsson,ab8500"; + reg = <5>; /* mailbox 5 is i2c */ + interrupts = <0 40 0x4>; + }; + }; + + i2c@80004000 { + compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c"; + reg = <0x80004000 0x1000>; + interrupts = <0 21 0x4>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c@80122000 { + compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c"; + reg = <0x80122000 0x1000>; + interrupts = <0 22 0x4>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c@80128000 { + compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c"; + reg = <0x80128000 0x1000>; + interrupts = <0 55 0x4>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c@80110000 { + compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c"; + reg = <0x80110000 0x1000>; + interrupts = <0 12 0x4>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c@8012a000 { + compatible = "stericsson,db8500-i2c", "stmicroelectronics,nomadik-i2c"; + reg = <0x8012a000 0x1000>; + interrupts = <0 51 0x4>; + #address-cells = <1>; + #size-cells = <0>; + }; + + ssp@80002000 { + compatible = "arm,pl022", "arm,primecell"; + reg = <80002000 0x1000>; + interrupts = <0 14 0x4>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + cs-gpios = <&gpio0 31 &gpio4 14 &gpio4 16 &gpio6 22 &gpio7 0>; + }; + + uart@80120000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x80120000 0x1000>; + interrupts = <0 11 0x4>; + status = "disabled"; + }; + uart@80121000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x80121000 0x1000>; + interrupts = <0 19 0x4>; + status = "disabled"; + }; + uart@80007000 { + compatible = "arm,pl011", "arm,primecell"; + reg = <0x80007000 0x1000>; + interrupts = <0 26 0x4>; + status = "disabled"; + }; + + sdi@80126000 { + compatible = "arm,pl18x", "arm,primecell"; + reg = <0x80126000 0x1000>; + interrupts = <0 60 0x4>; + status = "disabled"; + }; + sdi@80118000 { + compatible = "arm,pl18x", "arm,primecell"; + reg = <0x80118000 0x1000>; + interrupts = <0 50 0x4>; + status = "disabled"; + }; + sdi@80005000 { + compatible = "arm,pl18x", "arm,primecell"; + reg = <0x80005000 0x1000>; + interrupts = <0 41 0x4>; + status = "disabled"; + }; + sdi@80119000 { + compatible = "arm,pl18x", "arm,primecell"; + reg = <0x80119000 0x1000>; + interrupts = <0 59 0x4>; + status = "disabled"; + }; + sdi@80114000 { + compatible = "arm,pl18x", "arm,primecell"; + reg = <0x80114000 0x1000>; + interrupts = <0 99 0x4>; + status = "disabled"; + }; + sdi@80008000 { + compatible = "arm,pl18x", "arm,primecell"; + reg = <0x80114000 0x1000>; + interrupts = <0 100 0x4>; + status = "disabled"; + }; }; }; diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts index 0ea9470..34bfd79 100644 --- a/arch/arm/boot/dts/snowball.dts +++ b/arch/arm/boot/dts/snowball.dts @@ -20,6 +20,108 @@ reg = <0x00000000 0x20000000>; }; + gpio_keys { + compatible = "gpio-keys"; + #address-cells = <1>; + #size-cells = <0>; + + button@1 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <2>; + label = "userpb"; + gpios = <&gpio1 0>; + }; + button@2 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <3>; + label = "userpb"; + gpios = <&gpio4 23>; + }; + button@3 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <4>; + label = "userpb"; + gpios = <&gpio4 23>; + }; + button@4 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <5>; + label = "userpb"; + gpios = <&gpio5 1>; + }; + button@5 { + debounce_interval = <50>; + wakeup = <1>; + linux,code = <6>; + label = "userpb"; + gpios = <&gpio5 2>; + }; + }; + + leds { + compatible = "gpio-leds"; + used-led { + label = "user_led"; + gpios = <&gpio4 14>; + }; + }; + soc-u9500 { + + external-bus@50000000 { + compatible = "simple-bus"; + reg = <0x50000000 0x10000000>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + ethernet@50000000 { + compatible = "smsc,9111"; + reg = <0x50000000 0x10000>; + interrupts = <12>; + interrupt-parent = <&gpio4>; + }; + }; + + sdi@80126000 { + status = "enabled"; + cd-gpios = <&gpio6 26>; + }; + + sdi@80114000 { + status = "enabled"; + }; + + i2c@80004000 { + tc3589x@42 { + //compatible = "tc3589x"; + reg = <0x42>; + interrupts = <25>; + interrupt-parent = <&gpio6>; + }; + tps61052@33 { + //compatible = "tps61052"; + reg = <0x33>; + }; + }; + + i2c@80128000 { + lp5521@0x33 { + // compatible = "lp5521"; + reg = <0x33>; + }; + lp5521@0x34 { + // compatible = "lp5521"; + reg = <0x34>; + }; + bh1780@0x29 { + // compatible = "rohm,bh1780gli"; + reg = <0x33>; + }; + }; }; }; diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index e2932fc..482b86e 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -621,6 +621,7 @@ static void __init mop500_init_machine(void) mop500_pins_init(); + /* FIXME: parent of ab8500 should be prcmu */ for (i = 0; i < ARRAY_SIZE(mop500_platform_devs); i++) mop500_platform_devs[i]->dev.parent = parent; @@ -743,6 +744,17 @@ MACHINE_START(SNOWBALL, "Calao Systems Snowball platform") MACHINE_END #ifdef CONFIG_MACH_UX500_DT + +struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = { + {}, +}; + +static const struct of_device_id u8500_soc_node[] = { + /* only create devices below soc node */ + { .compatible = "stericsson,db8500", }, + { }, +}; + static void __init u8500_init_machine(void) { struct device *parent = NULL; @@ -757,6 +769,8 @@ static void __init u8500_init_machine(void) for (i = 0; i < ARRAY_SIZE(snowball_platform_devs); i++) snowball_platform_devs[i]->dev.parent = parent; + /* automatically probe child nodes of db8500 device */ + of_platform_populate(NULL, u8500_soc_node, u8500_auxdata_lookup, parent); if (of_machine_is_compatible("st-ericsson,mop500")) { mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR; -- cgit v0.10.2 From dab6487e35680ac5043c58a60554c49052276f5e Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 7 Mar 2012 17:22:30 +0000 Subject: ARM: ux500: Enable Cortex-A9 GIC (Generic Interrupt Controller) in Device Tree This enables the embedded GIC on all u8500 based hardware using DT. Acked-by: Linus Walleij Reviewed-by: Arnd Bergmann Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/boot/dts/db8500.dtsi b/arch/arm/boot/dts/db8500.dtsi index 67423e4..614a471 100644 --- a/arch/arm/boot/dts/db8500.dtsi +++ b/arch/arm/boot/dts/db8500.dtsi @@ -16,8 +16,19 @@ #address-cells = <1>; #size-cells = <1>; compatible = "stericsson,db8500"; + interrupt-parent = <&intc>; ranges; + intc: interrupt-controller@a0411000 { + compatible = "arm,cortex-a9-gic"; + #interrupt-cells = <3>; + #address-cells = <1>; + interrupt-controller; + interrupt-parent; + reg = <0xa0411000 0x1000>, + <0xa0410100 0x100>; + }; + pmu { compatible = "arm,cortex-a9-pmu"; interrupts = <0 7 0x4>; diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c index 6242e88..d11f389 100644 --- a/arch/arm/mach-ux500/cpu.c +++ b/arch/arm/mach-ux500/cpu.c @@ -16,6 +16,8 @@ #include #include #include +#include +#include #include #include @@ -28,6 +30,11 @@ void __iomem *_PRCMU_BASE; +static const struct of_device_id ux500_dt_irq_match[] = { + { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, + {}, +}; + void __init ux500_init_irq(void) { void __iomem *dist_base; @@ -42,7 +49,12 @@ void __init ux500_init_irq(void) } else ux500_unknown_soc(); - gic_init(0, 29, dist_base, cpu_base); +#ifdef CONFIG_OF + if (of_have_populated_dt()) + of_irq_init(ux500_dt_irq_match); + else +#endif + gic_init(0, 29, dist_base, cpu_base); /* * Init clocks here so that they are available for system timer -- cgit v0.10.2 From 4905af0e13a665da5f72d2629e93161ba781d03b Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 7 Mar 2012 17:35:04 +0000 Subject: ARM: ux500: Enable PL011 AMBA UART Controller for Device Tree Enables the 3 UARTs found on a u8500 using DT. Acked-by: Linus Walleij Reviewed-by: Arnd Bergmann Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts index 34bfd79..359c6d6 100644 --- a/arch/arm/boot/dts/snowball.dts +++ b/arch/arm/boot/dts/snowball.dts @@ -96,6 +96,18 @@ status = "enabled"; }; + uart@80120000 { + status = "okay"; + }; + + uart@80121000 { + status = "okay"; + }; + + uart@80007000 { + status = "okay"; + }; + i2c@80004000 { tc3589x@42 { //compatible = "tc3589x"; diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 482b86e..ea0242a 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -746,6 +746,9 @@ MACHINE_END #ifdef CONFIG_MACH_UX500_DT struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = { + OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat), + OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat), + OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat), {}, }; @@ -802,7 +805,6 @@ static void __init u8500_init_machine(void) } mop500_i2c_init(parent); mop500_spi_init(parent); - mop500_uart_init(parent); i2c_register_board_info(0, mop500_i2c0_devices, i2c0_devs); i2c_register_board_info(2, mop500_i2c2_devices, -- cgit v0.10.2 From f1949ea0d1f6034d38ce20089980b6b26d527c25 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 8 Mar 2012 09:02:02 +0000 Subject: ARM: ux500: Enable PL310 Level 2 Cache Controller in Device Tree This provides PL310 Level 2 Cache Controller Device Tree support for all u8500 based devices. Acked-by: Linus Walleij Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/boot/dts/db8500.dtsi b/arch/arm/boot/dts/db8500.dtsi index 614a471..ce3b56f 100644 --- a/arch/arm/boot/dts/db8500.dtsi +++ b/arch/arm/boot/dts/db8500.dtsi @@ -29,6 +29,14 @@ <0xa0410100 0x100>; }; + L2: l2-cache { + compatible = "arm,pl310-cache"; + reg = <0xa0412000 0x1000>; + interrupts = <0 13 4>; + cache-unified; + cache-level = <2>; + }; + pmu { compatible = "arm,cortex-a9-pmu"; interrupts = <0 7 0x4>; diff --git a/arch/arm/mach-ux500/cache-l2x0.c b/arch/arm/mach-ux500/cache-l2x0.c index da5569d..77a75ed 100644 --- a/arch/arm/mach-ux500/cache-l2x0.c +++ b/arch/arm/mach-ux500/cache-l2x0.c @@ -5,6 +5,8 @@ */ #include +#include + #include #include #include @@ -45,7 +47,10 @@ static int __init ux500_l2x0_init(void) ux500_l2x0_unlock(); /* 64KB way size, 8 way associativity, force WA */ - l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff); + if (of_have_populated_dt()) + l2x0_of_init(0x3e060000, 0xc0000fff); + else + l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff); /* * We can't disable l2 as we are in non secure mode, currently -- cgit v0.10.2 From 15daf691e8e0119e6c21d3ddf6b4754e66e37365 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 15 Mar 2012 16:47:11 +0000 Subject: ARM: ux500: Enable PL022 SSP Controller in Device Tree This SSP Controller supports a number of serial communication methods and as such cannot be registered using of_register_spi_devices. Instead we register it simply as a primecell device. Acked-by: Linus Walleij Acked-by: Arnd Bergmann Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/boot/dts/db8500.dtsi b/arch/arm/boot/dts/db8500.dtsi index ce3b56f..a81cce0 100644 --- a/arch/arm/boot/dts/db8500.dtsi +++ b/arch/arm/boot/dts/db8500.dtsi @@ -204,7 +204,10 @@ #address-cells = <1>; #size-cells = <0>; status = "disabled"; + + // Add one of these for each child device cs-gpios = <&gpio0 31 &gpio4 14 &gpio4 16 &gpio6 22 &gpio7 0>; + }; uart@80120000 { diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index ea0242a..d0799d5 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -443,7 +443,7 @@ static struct stedma40_chan_cfg ssp0_dma_cfg_tx = { }; #endif -static struct pl022_ssp_controller ssp0_platform_data = { +static struct pl022_ssp_controller ssp0_plat = { .bus_id = 0, #ifdef CONFIG_STE_DMA40 .enable_dma = 1, @@ -461,7 +461,7 @@ static struct pl022_ssp_controller ssp0_platform_data = { static void __init mop500_spi_init(struct device *parent) { - db8500_add_ssp0(parent, &ssp0_platform_data); + db8500_add_ssp0(parent, &ssp0_plat); } #ifdef CONFIG_STE_DMA40 @@ -749,6 +749,7 @@ struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat), OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat), OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat), + OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0", &ssp0_plat), {}, }; @@ -804,7 +805,6 @@ static void __init u8500_init_machine(void) hrefv60_sdi_init(parent); } mop500_i2c_init(parent); - mop500_spi_init(parent); i2c_register_board_info(0, mop500_i2c0_devices, i2c0_devs); i2c_register_board_info(2, mop500_i2c2_devices, -- cgit v0.10.2 From 71de5c46e0600b72df58269e80da343e354ddbd7 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Fri, 16 Mar 2012 09:53:24 +0000 Subject: ARM: ux500: Provide local timer support for Device Tree This enables local timer (AKA: private timer) support for all u8500 based hardware using DT. Acked-by: Linus Walleij Signed-off-by: Lee Jones Signed-off-by: Arnd Bergmann diff --git a/arch/arm/boot/dts/db8500.dtsi b/arch/arm/boot/dts/db8500.dtsi index a81cce0..d73dce6 100644 --- a/arch/arm/boot/dts/db8500.dtsi +++ b/arch/arm/boot/dts/db8500.dtsi @@ -42,6 +42,12 @@ interrupts = <0 7 0x4>; }; + timer@a0410600 { + compatible = "arm,cortex-a9-twd-timer"; + reg = <0xa0410600 0x20>; + interrupts = <1 13 0x304>; + }; + rtc@80154000 { compatible = "stericsson,db8500-rtc"; reg = <0x80154000 0x1000>; diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c index e9d5807..d37df98 100644 --- a/arch/arm/mach-ux500/timer.c +++ b/arch/arm/mach-ux500/timer.c @@ -7,6 +7,7 @@ #include #include #include +#include #include @@ -30,9 +31,13 @@ static void __init ux500_twd_init(void) twd_local_timer = cpu_is_u5500() ? &u5500_twd_local_timer : &u8500_twd_local_timer; - err = twd_local_timer_register(twd_local_timer); - if (err) - pr_err("twd_local_timer_register failed %d\n", err); + if (of_have_populated_dt()) + twd_local_timer_of_register(); + else { + err = twd_local_timer_register(twd_local_timer); + if (err) + pr_err("twd_local_timer_register failed %d\n", err); + } } #else #define ux500_twd_init() do { } while(0) -- cgit v0.10.2