summaryrefslogtreecommitdiff
path: root/drivers/s390
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/char/sclp_cmd.c20
-rw-r--r--drivers/s390/char/zcore.c34
-rw-r--r--drivers/s390/cio/blacklist.c28
-rw-r--r--drivers/s390/crypto/ap_bus.c17
-rw-r--r--drivers/s390/kvm/kvm_virtio.c11
-rw-r--r--drivers/s390/kvm/virtio_ccw.c20
6 files changed, 70 insertions, 60 deletions
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 178836e..bf07c3a 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -345,7 +345,6 @@ struct memory_increment {
struct list_head list;
u16 rn;
int standby;
- int usecount;
};
struct assign_storage_sccb {
@@ -463,21 +462,10 @@ static int sclp_mem_change_state(unsigned long start, unsigned long size,
break;
if (start > istart + rzm - 1)
continue;
- if (online) {
- if (incr->usecount++)
- continue;
- /*
- * Don't break the loop if one assign fails. Loop may
- * be walked again on CANCEL and we can't save
- * information if state changed before or not.
- * So continue and increase usecount for all increments.
- */
+ if (online)
rc |= sclp_assign_storage(incr->rn);
- } else {
- if (--incr->usecount)
- continue;
+ else
sclp_unassign_storage(incr->rn);
- }
}
return rc ? -EIO : 0;
}
@@ -561,8 +549,6 @@ static void __init sclp_add_standby_memory(void)
add_memory_merged(0);
}
-#define MEM_SCT_SIZE (1UL << SECTION_SIZE_BITS)
-
static void __init insert_increment(u16 rn, int standby, int assigned)
{
struct memory_increment *incr, *new_incr;
@@ -574,8 +560,6 @@ static void __init insert_increment(u16 rn, int standby, int assigned)
return;
new_incr->rn = rn;
new_incr->standby = standby;
- if (!standby)
- new_incr->usecount = rzm > MEM_SCT_SIZE ? rzm/MEM_SCT_SIZE : 1;
last_rn = 0;
prev = &sclp_mem_list;
list_for_each_entry(incr, &sclp_mem_list, list) {
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 2282061..9e5e146 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -426,7 +426,7 @@ static int zcore_memmap_open(struct inode *inode, struct file *filp)
GFP_KERNEL);
if (!chunk_array)
return -ENOMEM;
- detect_memory_layout(chunk_array);
+ detect_memory_layout(chunk_array, 0);
buf = kzalloc(MEMORY_CHUNKS * CHUNK_INFO_SIZE, GFP_KERNEL);
if (!buf) {
kfree(chunk_array);
@@ -557,7 +557,7 @@ static void __init set_lc_mask(struct save_area *map)
/*
* Initialize dump globals for a given architecture
*/
-static int __init sys_info_init(enum arch_id arch)
+static int __init sys_info_init(enum arch_id arch, unsigned long mem_end)
{
int rc;
@@ -579,7 +579,7 @@ static int __init sys_info_init(enum arch_id arch)
rc = init_cpu_info(arch);
if (rc)
return rc;
- sys_info.mem_size = real_memory_size;
+ sys_info.mem_size = mem_end;
return 0;
}
@@ -601,7 +601,7 @@ static int __init check_sdias(void)
return 0;
}
-static int __init get_mem_size(unsigned long *mem)
+static int __init get_mem_info(unsigned long *mem, unsigned long *end)
{
int i;
struct mem_chunk *chunk_array;
@@ -610,33 +610,31 @@ static int __init get_mem_size(unsigned long *mem)
GFP_KERNEL);
if (!chunk_array)
return -ENOMEM;
- detect_memory_layout(chunk_array);
+ detect_memory_layout(chunk_array, 0);
for (i = 0; i < MEMORY_CHUNKS; i++) {
if (chunk_array[i].size == 0)
break;
*mem += chunk_array[i].size;
+ *end = max(*end, chunk_array[i].addr + chunk_array[i].size);
}
kfree(chunk_array);
return 0;
}
-static int __init zcore_header_init(int arch, struct zcore_header *hdr)
+static void __init zcore_header_init(int arch, struct zcore_header *hdr,
+ unsigned long mem_size)
{
- int rc, i;
- unsigned long memory = 0;
u32 prefix;
+ int i;
if (arch == ARCH_S390X)
hdr->arch_id = DUMP_ARCH_S390X;
else
hdr->arch_id = DUMP_ARCH_S390;
- rc = get_mem_size(&memory);
- if (rc)
- return rc;
- hdr->mem_size = memory;
- hdr->rmem_size = memory;
+ hdr->mem_size = mem_size;
+ hdr->rmem_size = mem_size;
hdr->mem_end = sys_info.mem_size;
- hdr->num_pages = memory / PAGE_SIZE;
+ hdr->num_pages = mem_size / PAGE_SIZE;
hdr->tod = get_tod_clock();
get_cpu_id(&hdr->cpu_id);
for (i = 0; zfcpdump_save_areas[i]; i++) {
@@ -647,7 +645,6 @@ static int __init zcore_header_init(int arch, struct zcore_header *hdr)
hdr->lc_vec[hdr->cpu_cnt] = prefix;
hdr->cpu_cnt++;
}
- return 0;
}
/*
@@ -682,9 +679,11 @@ static int __init zcore_reipl_init(void)
static int __init zcore_init(void)
{
+ unsigned long mem_size, mem_end;
unsigned char arch;
int rc;
+ mem_size = mem_end = 0;
if (ipl_info.type != IPL_TYPE_FCP_DUMP)
return -ENODATA;
if (OLDMEM_BASE)
@@ -727,13 +726,14 @@ static int __init zcore_init(void)
}
#endif /* CONFIG_64BIT */
- rc = sys_info_init(arch);
+ rc = get_mem_info(&mem_size, &mem_end);
if (rc)
goto fail;
- rc = zcore_header_init(arch, &zcore_header);
+ rc = sys_info_init(arch, mem_end);
if (rc)
goto fail;
+ zcore_header_init(arch, &zcore_header, mem_size);
rc = zcore_reipl_init();
if (rc)
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index 2d2a966..a9fe3de 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -1,7 +1,7 @@
/*
* S/390 common I/O routines -- blacklisting of specific devices
*
- * Copyright IBM Corp. 1999, 2002
+ * Copyright IBM Corp. 1999, 2013
* Author(s): Ingo Adlung (adlung@de.ibm.com)
* Cornelia Huck (cornelia.huck@de.ibm.com)
* Arnd Bergmann (arndb@de.ibm.com)
@@ -17,8 +17,9 @@
#include <linux/ctype.h>
#include <linux/device.h>
-#include <asm/cio.h>
#include <asm/uaccess.h>
+#include <asm/cio.h>
+#include <asm/ipl.h>
#include "blacklist.h"
#include "cio.h"
@@ -172,6 +173,29 @@ static int blacklist_parse_parameters(char *str, range_action action,
to_cssid = __MAX_CSSID;
to_ssid = __MAX_SSID;
to = __MAX_SUBCHANNEL;
+ } else if (strcmp(parm, "ipldev") == 0) {
+ if (ipl_info.type == IPL_TYPE_CCW) {
+ from_cssid = 0;
+ from_ssid = ipl_info.data.ccw.dev_id.ssid;
+ from = ipl_info.data.ccw.dev_id.devno;
+ } else if (ipl_info.type == IPL_TYPE_FCP ||
+ ipl_info.type == IPL_TYPE_FCP_DUMP) {
+ from_cssid = 0;
+ from_ssid = ipl_info.data.fcp.dev_id.ssid;
+ from = ipl_info.data.fcp.dev_id.devno;
+ } else {
+ continue;
+ }
+ to_cssid = from_cssid;
+ to_ssid = from_ssid;
+ to = from;
+ } else if (strcmp(parm, "condev") == 0) {
+ if (console_devno == -1)
+ continue;
+
+ from_cssid = to_cssid = 0;
+ from_ssid = to_ssid = 0;
+ from = to = console_devno;
} else {
rc = parse_busid(strsep(&parm, "-"), &from_cssid,
&from_ssid, &from, msgtrigger);
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index b8b340a..9de41aa 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -954,15 +954,11 @@ EXPORT_SYMBOL(ap_driver_unregister);
void ap_bus_force_rescan(void)
{
- /* Delete the AP bus rescan timer. */
- del_timer(&ap_config_timer);
-
- /* processing a synchonuous bus rescan */
- ap_scan_bus(NULL);
-
- /* Setup the AP bus rescan timer again. */
- ap_config_timer.expires = jiffies + ap_config_time * HZ;
- add_timer(&ap_config_timer);
+ /* reconfigure the AP bus rescan timer. */
+ mod_timer(&ap_config_timer, jiffies + ap_config_time * HZ);
+ /* processing a asynchronous bus rescan */
+ queue_work(ap_work_queue, &ap_config_work);
+ flush_work(&ap_config_work);
}
EXPORT_SYMBOL(ap_bus_force_rescan);
@@ -1305,8 +1301,9 @@ static void ap_scan_bus(struct work_struct *unused)
int rc, i;
ap_query_configuration();
- if (ap_select_domain() != 0)
+ if (ap_select_domain() != 0) {
return;
+ }
for (i = 0; i < AP_DEVICES; i++) {
qid = AP_MKQID(i, ap_domain_index);
dev = bus_find_device(&ap_bus_type, NULL,
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 6711e65..2ea6165 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -443,29 +443,30 @@ static int __init test_devices_support(unsigned long addr)
}
/*
* Init function for virtio
- * devices are in a single page above top of "normal" mem
+ * devices are in a single page above top of "normal" + standby mem
*/
static int __init kvm_devices_init(void)
{
int rc;
+ unsigned long total_memory_size = sclp_get_rzm() * sclp_get_rnmax();
if (!MACHINE_IS_KVM)
return -ENODEV;
- if (test_devices_support(real_memory_size) < 0)
+ if (test_devices_support(total_memory_size) < 0)
return -ENODEV;
- rc = vmem_add_mapping(real_memory_size, PAGE_SIZE);
+ rc = vmem_add_mapping(total_memory_size, PAGE_SIZE);
if (rc)
return rc;
- kvm_devices = (void *) real_memory_size;
+ kvm_devices = (void *) total_memory_size;
kvm_root = root_device_register("kvm_s390");
if (IS_ERR(kvm_root)) {
rc = PTR_ERR(kvm_root);
printk(KERN_ERR "Could not register kvm_s390 root device");
- vmem_remove_mapping(real_memory_size, PAGE_SIZE);
+ vmem_remove_mapping(total_memory_size, PAGE_SIZE);
return rc;
}
diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c
index fb877b59..779dc51 100644
--- a/drivers/s390/kvm/virtio_ccw.c
+++ b/drivers/s390/kvm/virtio_ccw.c
@@ -31,6 +31,7 @@
#include <asm/irq.h>
#include <asm/cio.h>
#include <asm/ccwdev.h>
+#include <asm/virtio-ccw.h>
/*
* virtio related functions
@@ -77,12 +78,9 @@ struct virtio_ccw_vq_info {
void *queue;
struct vq_info_block *info_block;
struct list_head node;
+ long cookie;
};
-#define KVM_VIRTIO_CCW_RING_ALIGN 4096
-
-#define KVM_S390_VIRTIO_CCW_NOTIFY 3
-
#define CCW_CMD_SET_VQ 0x13
#define CCW_CMD_VDEV_RESET 0x33
#define CCW_CMD_SET_IND 0x43
@@ -135,8 +133,11 @@ static int ccw_io_helper(struct virtio_ccw_device *vcdev,
do {
spin_lock_irqsave(get_ccwdev_lock(vcdev->cdev), flags);
ret = ccw_device_start(vcdev->cdev, ccw, intparm, 0, 0);
- if (!ret)
+ if (!ret) {
+ if (!vcdev->curr_io)
+ vcdev->err = 0;
vcdev->curr_io |= flag;
+ }
spin_unlock_irqrestore(get_ccwdev_lock(vcdev->cdev), flags);
cpu_relax();
} while (ret == -EBUSY);
@@ -145,15 +146,18 @@ static int ccw_io_helper(struct virtio_ccw_device *vcdev,
}
static inline long do_kvm_notify(struct subchannel_id schid,
- unsigned long queue_index)
+ unsigned long queue_index,
+ long cookie)
{
register unsigned long __nr asm("1") = KVM_S390_VIRTIO_CCW_NOTIFY;
register struct subchannel_id __schid asm("2") = schid;
register unsigned long __index asm("3") = queue_index;
register long __rc asm("2");
+ register long __cookie asm("4") = cookie;
asm volatile ("diag 2,4,0x500\n"
- : "=d" (__rc) : "d" (__nr), "d" (__schid), "d" (__index)
+ : "=d" (__rc) : "d" (__nr), "d" (__schid), "d" (__index),
+ "d"(__cookie)
: "memory", "cc");
return __rc;
}
@@ -166,7 +170,7 @@ static void virtio_ccw_kvm_notify(struct virtqueue *vq)
vcdev = to_vc_device(info->vq->vdev);
ccw_device_get_schid(vcdev->cdev, &schid);
- do_kvm_notify(schid, vq->index);
+ info->cookie = do_kvm_notify(schid, vq->index, info->cookie);
}
static int virtio_ccw_read_vq_conf(struct virtio_ccw_device *vcdev,
generated by cgit v0.10.2 at 2024-08-02 08:00:09 (GMT)