diff options
Diffstat (limited to 'drivers/staging/fsl_qbman/dpa_sys.h')
| -rw-r--r-- | drivers/staging/fsl_qbman/dpa_sys.h | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/drivers/staging/fsl_qbman/dpa_sys.h b/drivers/staging/fsl_qbman/dpa_sys.h new file mode 100644 index 0000000..e144f5a --- /dev/null +++ b/drivers/staging/fsl_qbman/dpa_sys.h @@ -0,0 +1,259 @@ +/* Copyright 2008-2012 Freescale Semiconductor, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef DPA_SYS_H +#define DPA_SYS_H + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/io.h> +#include <linux/dma-mapping.h> +#include <linux/bootmem.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/of_platform.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/kthread.h> +#include <linux/memblock.h> +#include <linux/completion.h> +#include <linux/log2.h> +#include <linux/types.h> +#include <linux/ioctl.h> +#include <linux/miscdevice.h> +#include <linux/uaccess.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/device.h> +#include <linux/uio_driver.h> +#include <linux/smp.h> +#include <linux/fsl_hypervisor.h> +#include <linux/vmalloc.h> +#include <linux/ctype.h> +#include <linux/math64.h> +#include <linux/bitops.h> + +#include <linux/fsl_usdpaa.h> + +/* When copying aligned words or shorts, try to avoid memcpy() */ +#define CONFIG_TRY_BETTER_MEMCPY + +/* For 2-element tables related to cache-inhibited and cache-enabled mappings */ +#define DPA_PORTAL_CE 0 +#define DPA_PORTAL_CI 1 + +/***********************/ +/* Misc inline assists */ +/***********************/ + +#if defined CONFIG_PPC32 +#include "dpa_sys_ppc32.h" +#elif defined CONFIG_PPC64 +#include "dpa_sys_ppc64.h" +#elif defined CONFIG_ARM +#include "dpa_sys_arm.h" +#elif defined CONFIG_ARM64 +#include "dpa_sys_arm64.h" +#endif + + +#ifdef CONFIG_FSL_DPA_CHECKING +#define DPA_ASSERT(x) \ + do { \ + if (!(x)) { \ + pr_crit("ASSERT: (%s:%d) %s\n", __FILE__, __LINE__, \ + __stringify_1(x)); \ + dump_stack(); \ + panic("assertion failure"); \ + } \ + } while (0) +#else +#define DPA_ASSERT(x) +#endif + +/* memcpy() stuff - when you know alignments in advance */ +#ifdef CONFIG_TRY_BETTER_MEMCPY +static inline void copy_words(void *dest, const void *src, size_t sz) +{ + u32 *__dest = dest; + const u32 *__src = src; + size_t __sz = sz >> 2; + BUG_ON((unsigned long)dest & 0x3); + BUG_ON((unsigned long)src & 0x3); + BUG_ON(sz & 0x3); + while (__sz--) + *(__dest++) = *(__src++); +} +static inline void copy_shorts(void *dest, const void *src, size_t sz) +{ + u16 *__dest = dest; + const u16 *__src = src; + size_t __sz = sz >> 1; + BUG_ON((unsigned long)dest & 0x1); + BUG_ON((unsigned long)src & 0x1); + BUG_ON(sz & 0x1); + while (__sz--) + *(__dest++) = *(__src++); +} +static inline void copy_bytes(void *dest, const void *src, size_t sz) +{ + u8 *__dest = dest; + const u8 *__src = src; + while (sz--) + *(__dest++) = *(__src++); +} +#else +#define copy_words memcpy +#define copy_shorts memcpy +#define copy_bytes memcpy +#endif + +/************/ +/* RB-trees */ +/************/ + +/* We encapsulate RB-trees so that its easier to use non-linux forms in + * non-linux systems. This also encapsulates the extra plumbing that linux code + * usually provides when using RB-trees. This encapsulation assumes that the + * data type held by the tree is u32. */ + +struct dpa_rbtree { + struct rb_root root; +}; +#define DPA_RBTREE { .root = RB_ROOT } + +static inline void dpa_rbtree_init(struct dpa_rbtree *tree) +{ + tree->root = RB_ROOT; +} + +#define IMPLEMENT_DPA_RBTREE(name, type, node_field, val_field) \ +static inline int name##_push(struct dpa_rbtree *tree, type *obj) \ +{ \ + struct rb_node *parent = NULL, **p = &tree->root.rb_node; \ + while (*p) { \ + u32 item; \ + parent = *p; \ + item = rb_entry(parent, type, node_field)->val_field; \ + if (obj->val_field < item) \ + p = &parent->rb_left; \ + else if (obj->val_field > item) \ + p = &parent->rb_right; \ + else \ + return -EBUSY; \ + } \ + rb_link_node(&obj->node_field, parent, p); \ + rb_insert_color(&obj->node_field, &tree->root); \ + return 0; \ +} \ +static inline void name##_del(struct dpa_rbtree *tree, type *obj) \ +{ \ + rb_erase(&obj->node_field, &tree->root); \ +} \ +static inline type *name##_find(struct dpa_rbtree *tree, u32 val) \ +{ \ + type *ret; \ + struct rb_node *p = tree->root.rb_node; \ + while (p) { \ + ret = rb_entry(p, type, node_field); \ + if (val < ret->val_field) \ + p = p->rb_left; \ + else if (val > ret->val_field) \ + p = p->rb_right; \ + else \ + return ret; \ + } \ + return NULL; \ +} + +/************/ +/* Bootargs */ +/************/ + +/* Qman has "qportals=" and Bman has "bportals=", they use the same syntax + * though; a comma-separated list of items, each item being a cpu index and/or a + * range of cpu indices, and each item optionally be prefixed by "s" to indicate + * that the portal associated with that cpu should be shared. See bman_driver.c + * for more specifics. */ +static int __parse_portals_cpu(const char **s, unsigned int *cpu) +{ + *cpu = 0; + if (!isdigit(**s)) + return -EINVAL; + while (isdigit(**s)) + *cpu = *cpu * 10 + (*((*s)++) - '0'); + return 0; +} +static inline int parse_portals_bootarg(char *str, struct cpumask *want_shared, + struct cpumask *want_unshared, + const char *argname) +{ + const char *s = str; + unsigned int shared, cpu1, cpu2, loop; + +keep_going: + if (*s == 's') { + shared = 1; + s++; + } else + shared = 0; + if (__parse_portals_cpu(&s, &cpu1)) + goto err; + if (*s == '-') { + s++; + if (__parse_portals_cpu(&s, &cpu2)) + goto err; + if (cpu2 < cpu1) + goto err; + } else + cpu2 = cpu1; + for (loop = cpu1; loop <= cpu2; loop++) + cpumask_set_cpu(loop, shared ? want_shared : want_unshared); + if (*s == ',') { + s++; + goto keep_going; + } else if ((*s == '\0') || isspace(*s)) + return 0; +err: + pr_crit("Malformed %s argument: %s, offset: %lu\n", argname, str, + (unsigned long)s - (unsigned long)str); + return -EINVAL; +} +#ifdef CONFIG_FSL_USDPAA +/* Hooks from fsl_usdpaa_irq.c to fsl_usdpaa.c */ +int usdpaa_get_portal_config(struct file *filp, void *cinh, + enum usdpaa_portal_type ptype, unsigned int *irq, + void **iir_reg); +#endif +#endif /* DPA_SYS_H */ |