patch-2.4.8 linux/drivers/char/drm/memory.c
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- Lines: 449
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.7/linux/drivers/char/drm/memory.c
- Orig date:
Thu Nov 16 14:05:49 2000
diff -u --recursive --new-file v2.4.7/linux/drivers/char/drm/memory.c linux/drivers/char/drm/memory.c
@@ -1,448 +0,0 @@
-/* memory.c -- Memory management wrappers for DRM -*- linux-c -*-
- * Created: Thu Feb 4 14:00:34 1999 by faith@precisioninsight.com
- *
- * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
- * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- * Rickard E. (Rik) Faith <faith@valinux.com>
- *
- */
-
-#define __NO_VERSION__
-#include <linux/config.h>
-#include "drmP.h"
-#include <linux/wrapper.h>
-
-typedef struct drm_mem_stats {
- const char *name;
- int succeed_count;
- int free_count;
- int fail_count;
- unsigned long bytes_allocated;
- unsigned long bytes_freed;
-} drm_mem_stats_t;
-
-static spinlock_t drm_mem_lock = SPIN_LOCK_UNLOCKED;
-static unsigned long drm_ram_available = 0; /* In pages */
-static unsigned long drm_ram_used = 0;
-static drm_mem_stats_t drm_mem_stats[] = {
- [DRM_MEM_DMA] = { "dmabufs" },
- [DRM_MEM_SAREA] = { "sareas" },
- [DRM_MEM_DRIVER] = { "driver" },
- [DRM_MEM_MAGIC] = { "magic" },
- [DRM_MEM_IOCTLS] = { "ioctltab" },
- [DRM_MEM_MAPS] = { "maplist" },
- [DRM_MEM_VMAS] = { "vmalist" },
- [DRM_MEM_BUFS] = { "buflist" },
- [DRM_MEM_SEGS] = { "seglist" },
- [DRM_MEM_PAGES] = { "pagelist" },
- [DRM_MEM_FILES] = { "files" },
- [DRM_MEM_QUEUES] = { "queues" },
- [DRM_MEM_CMDS] = { "commands" },
- [DRM_MEM_MAPPINGS] = { "mappings" },
- [DRM_MEM_BUFLISTS] = { "buflists" },
- [DRM_MEM_AGPLISTS] = { "agplist" },
- [DRM_MEM_TOTALAGP] = { "totalagp" },
- [DRM_MEM_BOUNDAGP] = { "boundagp" },
- [DRM_MEM_CTXBITMAP] = { "ctxbitmap"},
- { NULL, 0, } /* Last entry must be null */
-};
-
-void drm_mem_init(void)
-{
- drm_mem_stats_t *mem;
- struct sysinfo si;
-
- for (mem = drm_mem_stats; mem->name; ++mem) {
- mem->succeed_count = 0;
- mem->free_count = 0;
- mem->fail_count = 0;
- mem->bytes_allocated = 0;
- mem->bytes_freed = 0;
- }
-
- si_meminfo(&si);
-#if LINUX_VERSION_CODE < 0x020317
- /* Changed to page count in 2.3.23 */
- drm_ram_available = si.totalram >> PAGE_SHIFT;
-#else
- drm_ram_available = si.totalram;
-#endif
- drm_ram_used = 0;
-}
-
-/* drm_mem_info is called whenever a process reads /dev/drm/mem. */
-
-static int _drm_mem_info(char *buf, char **start, off_t offset, int len,
- int *eof, void *data)
-{
- drm_mem_stats_t *pt;
-
- if (offset > 0) return 0; /* no partial requests */
- len = 0;
- *eof = 1;
- DRM_PROC_PRINT(" total counts "
- " | outstanding \n");
- DRM_PROC_PRINT("type alloc freed fail bytes freed"
- " | allocs bytes\n\n");
- DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB |\n",
- "system", 0, 0, 0,
- drm_ram_available << (PAGE_SHIFT - 10));
- DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB |\n",
- "locked", 0, 0, 0, drm_ram_used >> 10);
- DRM_PROC_PRINT("\n");
- for (pt = drm_mem_stats; pt->name; pt++) {
- DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu %10lu | %6d %10ld\n",
- pt->name,
- pt->succeed_count,
- pt->free_count,
- pt->fail_count,
- pt->bytes_allocated,
- pt->bytes_freed,
- pt->succeed_count - pt->free_count,
- (long)pt->bytes_allocated
- - (long)pt->bytes_freed);
- }
-
- return len;
-}
-
-int drm_mem_info(char *buf, char **start, off_t offset, int len,
- int *eof, void *data)
-{
- int ret;
-
- spin_lock(&drm_mem_lock);
- ret = _drm_mem_info(buf, start, offset, len, eof, data);
- spin_unlock(&drm_mem_lock);
- return ret;
-}
-
-void *drm_alloc(size_t size, int area)
-{
- void *pt;
-
- if (!size) {
- DRM_MEM_ERROR(area, "Allocating 0 bytes\n");
- return NULL;
- }
-
- if (!(pt = kmalloc(size, GFP_KERNEL))) {
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[area].fail_count;
- spin_unlock(&drm_mem_lock);
- return NULL;
- }
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[area].succeed_count;
- drm_mem_stats[area].bytes_allocated += size;
- spin_unlock(&drm_mem_lock);
- return pt;
-}
-
-void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area)
-{
- void *pt;
-
- if (!(pt = drm_alloc(size, area))) return NULL;
- if (oldpt && oldsize) {
- memcpy(pt, oldpt, oldsize);
- drm_free(oldpt, oldsize, area);
- }
- return pt;
-}
-
-char *drm_strdup(const char *s, int area)
-{
- char *pt;
- int length = s ? strlen(s) : 0;
-
- if (!(pt = drm_alloc(length+1, area))) return NULL;
- strcpy(pt, s);
- return pt;
-}
-
-void drm_strfree(const char *s, int area)
-{
- unsigned int size;
-
- if (!s) return;
-
- size = 1 + (s ? strlen(s) : 0);
- drm_free((void *)s, size, area);
-}
-
-void drm_free(void *pt, size_t size, int area)
-{
- int alloc_count;
- int free_count;
-
- if (!pt) DRM_MEM_ERROR(area, "Attempt to free NULL pointer\n");
- else kfree(pt);
- spin_lock(&drm_mem_lock);
- drm_mem_stats[area].bytes_freed += size;
- free_count = ++drm_mem_stats[area].free_count;
- alloc_count = drm_mem_stats[area].succeed_count;
- spin_unlock(&drm_mem_lock);
- if (free_count > alloc_count) {
- DRM_MEM_ERROR(area, "Excess frees: %d frees, %d allocs\n",
- free_count, alloc_count);
- }
-}
-
-unsigned long drm_alloc_pages(int order, int area)
-{
- unsigned long address;
- unsigned long bytes = PAGE_SIZE << order;
- unsigned long addr;
- unsigned int sz;
-
- spin_lock(&drm_mem_lock);
- if ((drm_ram_used >> PAGE_SHIFT)
- > (DRM_RAM_PERCENT * drm_ram_available) / 100) {
- spin_unlock(&drm_mem_lock);
- return 0;
- }
- spin_unlock(&drm_mem_lock);
-
- address = __get_free_pages(GFP_KERNEL, order);
- if (!address) {
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[area].fail_count;
- spin_unlock(&drm_mem_lock);
- return 0;
- }
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[area].succeed_count;
- drm_mem_stats[area].bytes_allocated += bytes;
- drm_ram_used += bytes;
- spin_unlock(&drm_mem_lock);
-
-
- /* Zero outside the lock */
- memset((void *)address, 0, bytes);
-
- /* Reserve */
- for (addr = address, sz = bytes;
- sz > 0;
- addr += PAGE_SIZE, sz -= PAGE_SIZE) {
-#if LINUX_VERSION_CODE >= 0x020400
- /* Argument type changed in 2.4.0-test6/pre8 */
- mem_map_reserve(virt_to_page(addr));
-#else
- mem_map_reserve(MAP_NR(addr));
-#endif
- }
-
- return address;
-}
-
-void drm_free_pages(unsigned long address, int order, int area)
-{
- unsigned long bytes = PAGE_SIZE << order;
- int alloc_count;
- int free_count;
- unsigned long addr;
- unsigned int sz;
-
- if (!address) {
- DRM_MEM_ERROR(area, "Attempt to free address 0\n");
- } else {
- /* Unreserve */
- for (addr = address, sz = bytes;
- sz > 0;
- addr += PAGE_SIZE, sz -= PAGE_SIZE) {
-#if LINUX_VERSION_CODE >= 0x020400
- /* Argument type changed in 2.4.0-test6/pre8 */
- mem_map_unreserve(virt_to_page(addr));
-#else
- mem_map_unreserve(MAP_NR(addr));
-#endif
- }
- free_pages(address, order);
- }
-
- spin_lock(&drm_mem_lock);
- free_count = ++drm_mem_stats[area].free_count;
- alloc_count = drm_mem_stats[area].succeed_count;
- drm_mem_stats[area].bytes_freed += bytes;
- drm_ram_used -= bytes;
- spin_unlock(&drm_mem_lock);
- if (free_count > alloc_count) {
- DRM_MEM_ERROR(area,
- "Excess frees: %d frees, %d allocs\n",
- free_count, alloc_count);
- }
-}
-
-void *drm_ioremap(unsigned long offset, unsigned long size)
-{
- void *pt;
-
- if (!size) {
- DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
- "Mapping 0 bytes at 0x%08lx\n", offset);
- return NULL;
- }
-
- if (!(pt = ioremap(offset, size))) {
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[DRM_MEM_MAPPINGS].fail_count;
- spin_unlock(&drm_mem_lock);
- return NULL;
- }
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
- drm_mem_stats[DRM_MEM_MAPPINGS].bytes_allocated += size;
- spin_unlock(&drm_mem_lock);
- return pt;
-}
-
-void drm_ioremapfree(void *pt, unsigned long size)
-{
- int alloc_count;
- int free_count;
-
- if (!pt)
- DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
- "Attempt to free NULL pointer\n");
- else
- iounmap(pt);
-
- spin_lock(&drm_mem_lock);
- drm_mem_stats[DRM_MEM_MAPPINGS].bytes_freed += size;
- free_count = ++drm_mem_stats[DRM_MEM_MAPPINGS].free_count;
- alloc_count = drm_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
- spin_unlock(&drm_mem_lock);
- if (free_count > alloc_count) {
- DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
- "Excess frees: %d frees, %d allocs\n",
- free_count, alloc_count);
- }
-}
-
-#if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
-agp_memory *drm_alloc_agp(int pages, u32 type)
-{
- agp_memory *handle;
-
- if (!pages) {
- DRM_MEM_ERROR(DRM_MEM_TOTALAGP, "Allocating 0 pages\n");
- return NULL;
- }
-
- if ((handle = drm_agp_allocate_memory(pages, type))) {
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
- drm_mem_stats[DRM_MEM_TOTALAGP].bytes_allocated
- += pages << PAGE_SHIFT;
- spin_unlock(&drm_mem_lock);
- return handle;
- }
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[DRM_MEM_TOTALAGP].fail_count;
- spin_unlock(&drm_mem_lock);
- return NULL;
-}
-
-int drm_free_agp(agp_memory *handle, int pages)
-{
- int alloc_count;
- int free_count;
- int retval = -EINVAL;
-
- if (!handle) {
- DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
- "Attempt to free NULL AGP handle\n");
- return retval;;
- }
-
- if (drm_agp_free_memory(handle)) {
- spin_lock(&drm_mem_lock);
- free_count = ++drm_mem_stats[DRM_MEM_TOTALAGP].free_count;
- alloc_count = drm_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
- drm_mem_stats[DRM_MEM_TOTALAGP].bytes_freed
- += pages << PAGE_SHIFT;
- spin_unlock(&drm_mem_lock);
- if (free_count > alloc_count) {
- DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
- "Excess frees: %d frees, %d allocs\n",
- free_count, alloc_count);
- }
- return 0;
- }
- return retval;
-}
-
-int drm_bind_agp(agp_memory *handle, unsigned int start)
-{
- int retcode = -EINVAL;
-
- if (!handle) {
- DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
- "Attempt to bind NULL AGP handle\n");
- return retcode;
- }
-
- if (!(retcode = drm_agp_bind_memory(handle, start))) {
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
- drm_mem_stats[DRM_MEM_BOUNDAGP].bytes_allocated
- += handle->page_count << PAGE_SHIFT;
- spin_unlock(&drm_mem_lock);
- return retcode;
- }
- spin_lock(&drm_mem_lock);
- ++drm_mem_stats[DRM_MEM_BOUNDAGP].fail_count;
- spin_unlock(&drm_mem_lock);
- return retcode;
-}
-
-int drm_unbind_agp(agp_memory *handle)
-{
- int alloc_count;
- int free_count;
- int retcode = -EINVAL;
-
- if (!handle) {
- DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
- "Attempt to unbind NULL AGP handle\n");
- return retcode;
- }
-
- if ((retcode = drm_agp_unbind_memory(handle))) return retcode;
- spin_lock(&drm_mem_lock);
- free_count = ++drm_mem_stats[DRM_MEM_BOUNDAGP].free_count;
- alloc_count = drm_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
- drm_mem_stats[DRM_MEM_BOUNDAGP].bytes_freed
- += handle->page_count << PAGE_SHIFT;
- spin_unlock(&drm_mem_lock);
- if (free_count > alloc_count) {
- DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
- "Excess frees: %d frees, %d allocs\n",
- free_count, alloc_count);
- }
- return retcode;
-}
-#endif
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