patch-2.4.8 linux/drivers/char/drm/memory.c

• 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