mirror of
https://gitlab.freedesktop.org/mesa/drm.git
synced 2025-12-20 17:30:09 +01:00
39a659e877
tree Remove debugging statements to make debugging more useful Other
minor cleanups in preparation for sync with Linux 2.4.0-test9-pre7
460 lines
12 KiB
C
460 lines
12 KiB
C
/* memory.c -- Memory management wrappers for DRM -*- linux-c -*-
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* Created: Thu Feb 4 14:00:34 1999 by faith@precisioninsight.com
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Rickard E. (Rik) Faith <faith@valinux.com>
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*
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*/
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#define __NO_VERSION__
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#include <linux/config.h>
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#include "drmP.h"
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#include <linux/wrapper.h>
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typedef struct drm_mem_stats {
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const char *name;
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int succeed_count;
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int free_count;
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int fail_count;
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unsigned long bytes_allocated;
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unsigned long bytes_freed;
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} drm_mem_stats_t;
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static spinlock_t drm_mem_lock = SPIN_LOCK_UNLOCKED;
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static unsigned long drm_ram_available = 0; /* In pages */
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static unsigned long drm_ram_used = 0;
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static drm_mem_stats_t drm_mem_stats[] = {
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[DRM_MEM_DMA] = { "dmabufs" },
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[DRM_MEM_SAREA] = { "sareas" },
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[DRM_MEM_DRIVER] = { "driver" },
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[DRM_MEM_MAGIC] = { "magic" },
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[DRM_MEM_IOCTLS] = { "ioctltab" },
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[DRM_MEM_MAPS] = { "maplist" },
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[DRM_MEM_VMAS] = { "vmalist" },
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[DRM_MEM_BUFS] = { "buflist" },
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[DRM_MEM_SEGS] = { "seglist" },
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[DRM_MEM_PAGES] = { "pagelist" },
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[DRM_MEM_FILES] = { "files" },
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[DRM_MEM_QUEUES] = { "queues" },
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[DRM_MEM_CMDS] = { "commands" },
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[DRM_MEM_MAPPINGS] = { "mappings" },
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[DRM_MEM_BUFLISTS] = { "buflists" },
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[DRM_MEM_AGPLISTS] = { "agplist" },
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[DRM_MEM_TOTALAGP] = { "totalagp" },
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[DRM_MEM_BOUNDAGP] = { "boundagp" },
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[DRM_MEM_CTXBITMAP] = { "ctxbitmap"},
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{ NULL, 0, } /* Last entry must be null */
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};
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void drm_mem_init(void)
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{
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drm_mem_stats_t *mem;
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struct sysinfo si;
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for (mem = drm_mem_stats; mem->name; ++mem) {
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mem->succeed_count = 0;
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mem->free_count = 0;
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mem->fail_count = 0;
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mem->bytes_allocated = 0;
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mem->bytes_freed = 0;
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}
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si_meminfo(&si);
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#if LINUX_VERSION_CODE < 0x020317
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/* Changed to page count in 2.3.23 */
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drm_ram_available = si.totalram >> PAGE_SHIFT;
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#else
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drm_ram_available = si.totalram;
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#endif
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drm_ram_used = 0;
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}
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/* drm_mem_info is called whenever a process reads /dev/drm/mem. */
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static int _drm_mem_info(char *buf, char **start, off_t offset, int len,
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int *eof, void *data)
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{
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drm_mem_stats_t *pt;
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if (offset > 0) return 0; /* no partial requests */
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len = 0;
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*eof = 1;
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DRM_PROC_PRINT(" total counts "
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" | outstanding \n");
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DRM_PROC_PRINT("type alloc freed fail bytes freed"
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" | allocs bytes\n\n");
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DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB |\n",
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"system", 0, 0, 0,
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drm_ram_available << (PAGE_SHIFT - 10));
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DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB |\n",
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"locked", 0, 0, 0, drm_ram_used >> 10);
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DRM_PROC_PRINT("\n");
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for (pt = drm_mem_stats; pt->name; pt++) {
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DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu %10lu | %6d %10ld\n",
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pt->name,
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pt->succeed_count,
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pt->free_count,
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pt->fail_count,
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pt->bytes_allocated,
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pt->bytes_freed,
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pt->succeed_count - pt->free_count,
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(long)pt->bytes_allocated
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- (long)pt->bytes_freed);
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}
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return len;
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}
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int drm_mem_info(char *buf, char **start, off_t offset, int len,
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int *eof, void *data)
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{
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int ret;
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spin_lock(&drm_mem_lock);
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ret = _drm_mem_info(buf, start, offset, len, eof, data);
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spin_unlock(&drm_mem_lock);
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return ret;
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}
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void *drm_alloc(size_t size, int area)
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{
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void *pt;
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if (!size) {
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DRM_MEM_ERROR(area, "Allocating 0 bytes\n");
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return NULL;
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}
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if (!(pt = kmalloc(size, GFP_KERNEL))) {
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[area].fail_count;
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spin_unlock(&drm_mem_lock);
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return NULL;
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}
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[area].succeed_count;
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drm_mem_stats[area].bytes_allocated += size;
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spin_unlock(&drm_mem_lock);
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return pt;
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}
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void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area)
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{
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void *pt;
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if (!(pt = drm_alloc(size, area))) return NULL;
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if (oldpt && oldsize) {
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memcpy(pt, oldpt, oldsize);
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drm_free(oldpt, oldsize, area);
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}
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return pt;
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}
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char *drm_strdup(const char *s, int area)
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{
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char *pt;
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int length = s ? strlen(s) : 0;
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if (!(pt = drm_alloc(length+1, area))) return NULL;
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strcpy(pt, s);
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return pt;
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}
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void drm_strfree(const char *s, int area)
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{
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unsigned int size;
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if (!s) return;
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size = 1 + (s ? strlen(s) : 0);
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drm_free((void *)s, size, area);
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}
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void drm_free(void *pt, size_t size, int area)
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{
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int alloc_count;
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int free_count;
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if (!pt) DRM_MEM_ERROR(area, "Attempt to free NULL pointer\n");
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else kfree(pt);
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spin_lock(&drm_mem_lock);
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drm_mem_stats[area].bytes_freed += size;
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free_count = ++drm_mem_stats[area].free_count;
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alloc_count = drm_mem_stats[area].succeed_count;
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spin_unlock(&drm_mem_lock);
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if (free_count > alloc_count) {
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DRM_MEM_ERROR(area, "Excess frees: %d frees, %d allocs\n",
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free_count, alloc_count);
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}
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}
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unsigned long drm_alloc_pages(int order, int area)
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{
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unsigned long address;
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unsigned long bytes = PAGE_SIZE << order;
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unsigned long addr;
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unsigned int sz;
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spin_lock(&drm_mem_lock);
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if ((drm_ram_used >> PAGE_SHIFT)
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> (DRM_RAM_PERCENT * drm_ram_available) / 100) {
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spin_unlock(&drm_mem_lock);
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return 0;
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}
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spin_unlock(&drm_mem_lock);
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address = __get_free_pages(GFP_KERNEL, order);
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if (!address) {
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[area].fail_count;
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spin_unlock(&drm_mem_lock);
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return 0;
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}
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[area].succeed_count;
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drm_mem_stats[area].bytes_allocated += bytes;
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drm_ram_used += bytes;
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spin_unlock(&drm_mem_lock);
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/* Zero outside the lock */
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memset((void *)address, 0, bytes);
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/* Reserve */
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for (addr = address, sz = bytes;
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sz > 0;
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addr += PAGE_SIZE, sz -= PAGE_SIZE) {
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#if LINUX_VERSION_CODE >= 0x020400
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/* Argument type changed in 2.4.0-test6/pre8 */
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mem_map_reserve(virt_to_page(addr));
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#else
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mem_map_reserve(MAP_NR(addr));
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#endif
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}
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return address;
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}
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void drm_free_pages(unsigned long address, int order, int area)
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{
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unsigned long bytes = PAGE_SIZE << order;
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int alloc_count;
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int free_count;
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unsigned long addr;
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unsigned int sz;
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if (!address) {
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DRM_MEM_ERROR(area, "Attempt to free address 0\n");
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} else {
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/* Unreserve */
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for (addr = address, sz = bytes;
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sz > 0;
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addr += PAGE_SIZE, sz -= PAGE_SIZE) {
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#if LINUX_VERSION_CODE >= 0x020400
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/* Argument type changed in 2.4.0-test6/pre8 */
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mem_map_unreserve(virt_to_page(addr));
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#else
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mem_map_unreserve(MAP_NR(addr));
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#endif
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}
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free_pages(address, order);
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}
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spin_lock(&drm_mem_lock);
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free_count = ++drm_mem_stats[area].free_count;
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alloc_count = drm_mem_stats[area].succeed_count;
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drm_mem_stats[area].bytes_freed += bytes;
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drm_ram_used -= bytes;
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spin_unlock(&drm_mem_lock);
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if (free_count > alloc_count) {
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DRM_MEM_ERROR(area,
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"Excess frees: %d frees, %d allocs\n",
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free_count, alloc_count);
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}
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}
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void *drm_ioremap(unsigned long offset, unsigned long size)
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{
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void *pt;
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if (!size) {
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DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
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"Mapping 0 bytes at 0x%08lx\n", offset);
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return NULL;
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}
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if (!(pt = ioremap(offset, size))) {
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[DRM_MEM_MAPPINGS].fail_count;
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spin_unlock(&drm_mem_lock);
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return NULL;
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}
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
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drm_mem_stats[DRM_MEM_MAPPINGS].bytes_allocated += size;
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spin_unlock(&drm_mem_lock);
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return pt;
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}
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void drm_ioremapfree(void *pt, unsigned long size)
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{
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int alloc_count;
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int free_count;
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if (!pt)
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DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
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"Attempt to free NULL pointer\n");
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else
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iounmap(pt);
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spin_lock(&drm_mem_lock);
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drm_mem_stats[DRM_MEM_MAPPINGS].bytes_freed += size;
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free_count = ++drm_mem_stats[DRM_MEM_MAPPINGS].free_count;
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alloc_count = drm_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
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spin_unlock(&drm_mem_lock);
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if (free_count > alloc_count) {
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DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
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"Excess frees: %d frees, %d allocs\n",
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free_count, alloc_count);
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}
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}
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#if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
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agp_memory *drm_alloc_agp(int pages, u32 type)
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{
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agp_memory *handle;
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if (!pages) {
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DRM_MEM_ERROR(DRM_MEM_TOTALAGP, "Allocating 0 pages\n");
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return NULL;
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}
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if (drm_agp.allocate_memory) {
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if ((handle = (*drm_agp.allocate_memory)(pages,
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type))) {
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
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drm_mem_stats[DRM_MEM_TOTALAGP].bytes_allocated
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+= pages << PAGE_SHIFT;
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spin_unlock(&drm_mem_lock);
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return handle;
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}
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}
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[DRM_MEM_TOTALAGP].fail_count;
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spin_unlock(&drm_mem_lock);
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return NULL;
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}
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int drm_free_agp(agp_memory *handle, int pages)
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{
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int alloc_count;
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int free_count;
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int retval = -EINVAL;
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if (!handle) {
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DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
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"Attempt to free NULL AGP handle\n");
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return retval;;
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}
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if (drm_agp.free_memory) {
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(*drm_agp.free_memory)(handle);
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spin_lock(&drm_mem_lock);
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free_count = ++drm_mem_stats[DRM_MEM_TOTALAGP].free_count;
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alloc_count = drm_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
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drm_mem_stats[DRM_MEM_TOTALAGP].bytes_freed
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+= pages << PAGE_SHIFT;
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spin_unlock(&drm_mem_lock);
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if (free_count > alloc_count) {
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DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
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"Excess frees: %d frees, %d allocs\n",
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free_count, alloc_count);
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}
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return 0;
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}
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return retval;
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}
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int drm_bind_agp(agp_memory *handle, unsigned int start)
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{
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int retcode = -EINVAL;
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DRM_DEBUG("drm_bind_agp called\n");
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if (!handle) {
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DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
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"Attempt to bind NULL AGP handle\n");
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return retcode;
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}
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DRM_DEBUG("drm_agp.bind_memory : %p\n", drm_agp.bind_memory);
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if (drm_agp.bind_memory) {
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if (!(retcode = (*drm_agp.bind_memory)(handle, start))) {
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
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drm_mem_stats[DRM_MEM_BOUNDAGP].bytes_allocated
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+= handle->page_count << PAGE_SHIFT;
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spin_unlock(&drm_mem_lock);
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DRM_DEBUG("drm_agp.bind_memory: retcode %d\n", retcode);
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return retcode;
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}
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}
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spin_lock(&drm_mem_lock);
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++drm_mem_stats[DRM_MEM_BOUNDAGP].fail_count;
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spin_unlock(&drm_mem_lock);
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return retcode;
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}
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int drm_unbind_agp(agp_memory *handle)
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{
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int alloc_count;
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int free_count;
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int retcode = -EINVAL;
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if (!handle) {
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DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
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"Attempt to unbind NULL AGP handle\n");
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return retcode;
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}
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if (drm_agp.unbind_memory) {
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int c = handle->page_count;
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if ((retcode = (*drm_agp.unbind_memory)(handle)))
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return retcode;
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spin_lock(&drm_mem_lock);
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free_count = ++drm_mem_stats[DRM_MEM_BOUNDAGP].free_count;
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alloc_count = drm_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
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drm_mem_stats[DRM_MEM_BOUNDAGP].bytes_freed += c << PAGE_SHIFT;
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spin_unlock(&drm_mem_lock);
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if (free_count > alloc_count) {
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DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
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"Excess frees: %d frees, %d allocs\n",
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free_count, alloc_count);
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}
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}
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return retcode;
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}
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#endif
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