[deliverable/linux.git] / drivers / char / drm / drm_memory_debug.h

/**
 * \file drm_memory_debug.h
 * Memory management wrappers for DRM.
 *
 * \author Rickard E. (Rik) Faith <faith@valinux.com>
 * \author Gareth Hughes <gareth@valinux.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
 * VA LINUX SYSTEMS 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.
 */

#include <linux/config.h>
#include "drmP.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 DEFINE_SPINLOCK(drm_mem_lock);
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_SGLISTS] = {"sglist"},
	[DRM_MEM_TOTALAGP] = {"totalagp"},
	[DRM_MEM_BOUNDAGP] = {"boundagp"},
	[DRM_MEM_CTXBITMAP] = {"ctxbitmap"},
	[DRM_MEM_CTXLIST] = {"ctxlist"},
	[DRM_MEM_STUB] = {"stub"},
	{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);
	drm_ram_available = si.totalram;
	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 request, int *eof, void *data) {
	drm_mem_stats_t *pt;
	int len = 0;

	if (offset > DRM_PROC_LIMIT) {
		*eof = 1;
		return 0;
	}

	*eof = 0;
	*start = &buf[offset];

	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);
	}

	if (len > request + offset)
		return request;
	*eof = 1;
	return len - offset;
}

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_calloc (size_t nmemb, size_t size, int area) {
	void *addr;

	addr = drm_alloc (nmemb * size, area);
	if (addr != NULL)
		memset((void *)addr, 0, size * nmemb);

	return addr;
}

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;
}

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);
	}
}

void *drm_ioremap (unsigned long offset, unsigned long size,
		    drm_device_t * dev) {
	void *pt;

	if (!size) {
		DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
			      "Mapping 0 bytes at 0x%08lx\n", offset);
		return NULL;
	}

	if (!(pt = drm_ioremap(offset, size, dev))) {
		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;
}

#if 0
void *drm_ioremap_nocache (unsigned long offset, unsigned long size,
			    drm_device_t * dev) {
	void *pt;

	if (!size) {
		DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
			      "Mapping 0 bytes at 0x%08lx\n", offset);
		return NULL;
	}

	if (!(pt = drm_ioremap_nocache(offset, size, dev))) {
		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;
}
#endif  /*  0  */

void drm_ioremapfree (void *pt, unsigned long size, drm_device_t * dev) {
	int alloc_count;
	int free_count;

	if (!pt)
		DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
			      "Attempt to free NULL pointer\n");
	else
		drm_ioremapfree(pt, size, dev);

	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 __OS_HAS_AGP

DRM_AGP_MEM *drm_alloc_agp (drm_device_t *dev, int pages, u32 type) {
	DRM_AGP_MEM *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 (DRM_AGP_MEM * 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 (DRM_AGP_MEM * 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 (DRM_AGP_MEM * 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
Commit	Line	Data
1da177e4	1	/**
f0c408b5	2	* \file drm_memory_debug.h
1da177e4 LT	3	* Memory management wrappers for DRM.
	4	*
	5	* \author Rickard E. (Rik) Faith <faith@valinux.com>
	6	* \author Gareth Hughes <gareth@valinux.com>
	7	*/
	8
	9	/*
	10	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
	11	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
	12	* All Rights Reserved.
	13	*
	14	* Permission is hereby granted, free of charge, to any person obtaining a
	15	* copy of this software and associated documentation files (the "Software"),
	16	* to deal in the Software without restriction, including without limitation
	17	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	18	* and/or sell copies of the Software, and to permit persons to whom the
	19	* Software is furnished to do so, subject to the following conditions:
	20	*
	21	* The above copyright notice and this permission notice (including the next
	22	* paragraph) shall be included in all copies or substantial portions of the
	23	* Software.
	24	*
	25	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	26	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	27	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	28	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	29	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	30	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	31	* OTHER DEALINGS IN THE SOFTWARE.
	32	*/
	33
	34	#include <linux/config.h>
	35	#include "drmP.h"
	36
	37	typedef struct drm_mem_stats {
b5e89ed5 DA	38	const char *name;
	39	int succeed_count;
	40	int free_count;
	41	int fail_count;
	42	unsigned long bytes_allocated;
	43	unsigned long bytes_freed;
1da177e4 LT	44	} drm_mem_stats_t;
1da177e4 LT	45
34af946a	46	static DEFINE_SPINLOCK(drm_mem_lock);
f0c408b5 DA	47	static unsigned long drm_ram_available = 0; /* In pages */
	48	static unsigned long drm_ram_used = 0;
	49	static drm_mem_stats_t drm_mem_stats[] =
b5e89ed5	50	{
f0c408b5 DA	51	[DRM_MEM_DMA] = {"dmabufs"},
	52	[DRM_MEM_SAREA] = {"sareas"},
	53	[DRM_MEM_DRIVER] = {"driver"},
	54	[DRM_MEM_MAGIC] = {"magic"},
	55	[DRM_MEM_IOCTLS] = {"ioctltab"},
	56	[DRM_MEM_MAPS] = {"maplist"},
	57	[DRM_MEM_VMAS] = {"vmalist"},
	58	[DRM_MEM_BUFS] = {"buflist"},
	59	[DRM_MEM_SEGS] = {"seglist"},
	60	[DRM_MEM_PAGES] = {"pagelist"},
	61	[DRM_MEM_FILES] = {"files"},
	62	[DRM_MEM_QUEUES] = {"queues"},
	63	[DRM_MEM_CMDS] = {"commands"},
	64	[DRM_MEM_MAPPINGS] = {"mappings"},
	65	[DRM_MEM_BUFLISTS] = {"buflists"},
	66	[DRM_MEM_AGPLISTS] = {"agplist"},
	67	[DRM_MEM_SGLISTS] = {"sglist"},
	68	[DRM_MEM_TOTALAGP] = {"totalagp"},
	69	[DRM_MEM_BOUNDAGP] = {"boundagp"},
	70	[DRM_MEM_CTXBITMAP] = {"ctxbitmap"},
	71	[DRM_MEM_CTXLIST] = {"ctxlist"},
	72	[DRM_MEM_STUB] = {"stub"},
	73	{NULL, 0,} /* Last entry must be null */
1da177e4 LT	74	};
1da177e4 LT	75
f0c408b5	76	void drm_mem_init (void) {
1da177e4	77	drm_mem_stats_t *mem;
b5e89ed5	78	struct sysinfo si;
1da177e4	79
f0c408b5	80	for (mem = drm_mem_stats; mem->name; ++mem) {
b5e89ed5 DA	81	mem->succeed_count = 0;
	82	mem->free_count = 0;
	83	mem->fail_count = 0;
1da177e4	84	mem->bytes_allocated = 0;
b5e89ed5	85	mem->bytes_freed = 0;
1da177e4 LT	86	}
	87
	88	si_meminfo(&si);
f0c408b5 DA	89	drm_ram_available = si.totalram;
f0c408b5 DA	90	drm_ram_used = 0;
1da177e4 LT	91	}
	92
	93	/* drm_mem_info is called whenever a process reads /dev/drm/mem. */
	94
f0c408b5	95	static int drm__mem_info (char buf, char *start, off_t offset,
b5e89ed5	96	int request, int eof, void data) {
1da177e4	97	drm_mem_stats_t *pt;
b5e89ed5	98	int len = 0;
1da177e4 LT	99
	100	if (offset > DRM_PROC_LIMIT) {
	101	*eof = 1;
	102	return 0;
	103	}
	104
b5e89ed5	105	*eof = 0;
1da177e4 LT	106	*start = &buf[offset];
	107
	108	DRM_PROC_PRINT(" total counts "
	109	" \| outstanding \n");
	110	DRM_PROC_PRINT("type alloc freed fail bytes freed"
	111	" \| allocs bytes\n\n");
	112	DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB \|\n",
	113	"system", 0, 0, 0,
f0c408b5	114	drm_ram_available << (PAGE_SHIFT - 10));
1da177e4	115	DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu kB \|\n",
f0c408b5	116	"locked", 0, 0, 0, drm_ram_used >> 10);
1da177e4	117	DRM_PROC_PRINT("\n");
f0c408b5	118	for (pt = drm_mem_stats; pt->name; pt++) {
1da177e4 LT	119	DRM_PROC_PRINT("%-9.9s %5d %5d %4d %10lu %10lu \| %6d %10ld\n",
	120	pt->name,
	121	pt->succeed_count,
	122	pt->free_count,
	123	pt->fail_count,
	124	pt->bytes_allocated,
	125	pt->bytes_freed,
	126	pt->succeed_count - pt->free_count,
	127	(long)pt->bytes_allocated
	128	- (long)pt->bytes_freed);
	129	}
	130
b5e89ed5 DA	131	if (len > request + offset)
b5e89ed5 DA	132	return request;
1da177e4 LT	133	*eof = 1;
	134	return len - offset;
	135	}
	136
f0c408b5	137	int drm_mem_info (char buf, char *start, off_t offset,
b5e89ed5	138	int len, int eof, void data) {
1da177e4 LT	139	int ret;
1da177e4 LT	140
f0c408b5 DA	141	spin_lock(&drm_mem_lock);
	142	ret = drm__mem_info (buf, start, offset, len, eof, data);
	143	spin_unlock(&drm_mem_lock);
1da177e4 LT	144	return ret;
	145	}
	146
f0c408b5	147	void *drm_alloc (size_t size, int area) {
1da177e4 LT	148	void *pt;
	149
	150	if (!size) {
	151	DRM_MEM_ERROR(area, "Allocating 0 bytes\n");
	152	return NULL;
	153	}
	154
	155	if (!(pt = kmalloc(size, GFP_KERNEL))) {
f0c408b5 DA	156	spin_lock(&drm_mem_lock);
	157	++drm_mem_stats[area].fail_count;
	158	spin_unlock(&drm_mem_lock);
1da177e4 LT	159	return NULL;
1da177e4 LT	160	}
f0c408b5 DA	161	spin_lock(&drm_mem_lock);
	162	++drm_mem_stats[area].succeed_count;
	163	drm_mem_stats[area].bytes_allocated += size;
	164	spin_unlock(&drm_mem_lock);
1da177e4 LT	165	return pt;
	166	}
	167
f0c408b5	168	void *drm_calloc (size_t nmemb, size_t size, int area) {
1da177e4 LT	169	void *addr;
1da177e4 LT	170
f0c408b5	171	addr = drm_alloc (nmemb * size, area);
1da177e4 LT	172	if (addr != NULL)
	173	memset((void )addr, 0, size nmemb);
	174
	175	return addr;
	176	}
	177
f0c408b5	178	void drm_realloc (void oldpt, size_t oldsize, size_t size, int area) {
1da177e4 LT	179	void *pt;
1da177e4 LT	180
f0c408b5	181	if (!(pt = drm_alloc (size, area)))
b5e89ed5	182	return NULL;
1da177e4 LT	183	if (oldpt && oldsize) {
1da177e4 LT	184	memcpy(pt, oldpt, oldsize);
f0c408b5	185	drm_free (oldpt, oldsize, area);
1da177e4 LT	186	}
	187	return pt;
	188	}
	189
f0c408b5	190	void drm_free (void *pt, size_t size, int area) {
1da177e4 LT	191	int alloc_count;
	192	int free_count;
	193
b5e89ed5 DA	194	if (!pt)
	195	DRM_MEM_ERROR(area, "Attempt to free NULL pointer\n");
	196	else
	197	kfree(pt);
f0c408b5 DA	198	spin_lock(&drm_mem_lock);
	199	drm_mem_stats[area].bytes_freed += size;
	200	free_count = ++drm_mem_stats[area].free_count;
	201	alloc_count = drm_mem_stats[area].succeed_count;
	202	spin_unlock(&drm_mem_lock);
1da177e4 LT	203	if (free_count > alloc_count) {
	204	DRM_MEM_ERROR(area, "Excess frees: %d frees, %d allocs\n",
	205	free_count, alloc_count);
	206	}
	207	}
	208
f0c408b5	209	void *drm_ioremap (unsigned long offset, unsigned long size,
b5e89ed5	210	drm_device_t * dev) {
1da177e4 LT	211	void *pt;
	212
	213	if (!size) {
	214	DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
	215	"Mapping 0 bytes at 0x%08lx\n", offset);
	216	return NULL;
	217	}
	218
	219	if (!(pt = drm_ioremap(offset, size, dev))) {
f0c408b5 DA	220	spin_lock(&drm_mem_lock);
	221	++drm_mem_stats[DRM_MEM_MAPPINGS].fail_count;
	222	spin_unlock(&drm_mem_lock);
1da177e4 LT	223	return NULL;
1da177e4 LT	224	}
f0c408b5 DA	225	spin_lock(&drm_mem_lock);
	226	++drm_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
	227	drm_mem_stats[DRM_MEM_MAPPINGS].bytes_allocated += size;
	228	spin_unlock(&drm_mem_lock);
1da177e4 LT	229	return pt;
	230	}
	231
031de96a	232	#if 0
f0c408b5	233	void *drm_ioremap_nocache (unsigned long offset, unsigned long size,
b5e89ed5	234	drm_device_t * dev) {
1da177e4 LT	235	void *pt;
	236
	237	if (!size) {
	238	DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
	239	"Mapping 0 bytes at 0x%08lx\n", offset);
	240	return NULL;
	241	}
	242
	243	if (!(pt = drm_ioremap_nocache(offset, size, dev))) {
f0c408b5 DA	244	spin_lock(&drm_mem_lock);
	245	++drm_mem_stats[DRM_MEM_MAPPINGS].fail_count;
	246	spin_unlock(&drm_mem_lock);
1da177e4 LT	247	return NULL;
1da177e4 LT	248	}
f0c408b5 DA	249	spin_lock(&drm_mem_lock);
	250	++drm_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
	251	drm_mem_stats[DRM_MEM_MAPPINGS].bytes_allocated += size;
	252	spin_unlock(&drm_mem_lock);
1da177e4 LT	253	return pt;
1da177e4 LT	254	}
031de96a	255	#endif /* 0 */
1da177e4	256
f0c408b5	257	void drm_ioremapfree (void pt, unsigned long size, drm_device_t dev) {
1da177e4 LT	258	int alloc_count;
	259	int free_count;
	260
	261	if (!pt)
	262	DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
	263	"Attempt to free NULL pointer\n");
	264	else
	265	drm_ioremapfree(pt, size, dev);
	266
f0c408b5 DA	267	spin_lock(&drm_mem_lock);
	268	drm_mem_stats[DRM_MEM_MAPPINGS].bytes_freed += size;
	269	free_count = ++drm_mem_stats[DRM_MEM_MAPPINGS].free_count;
	270	alloc_count = drm_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
	271	spin_unlock(&drm_mem_lock);
1da177e4 LT	272	if (free_count > alloc_count) {
	273	DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
	274	"Excess frees: %d frees, %d allocs\n",
	275	free_count, alloc_count);
	276	}
	277	}
	278
	279	#if __OS_HAS_AGP
	280
f0c408b5	281	DRM_AGP_MEM drm_alloc_agp (drm_device_t dev, int pages, u32 type) {
1da177e4 LT	282	DRM_AGP_MEM *handle;
	283
	284	if (!pages) {
	285	DRM_MEM_ERROR(DRM_MEM_TOTALAGP, "Allocating 0 pages\n");
	286	return NULL;
	287	}
	288
f0c408b5 DA	289	if ((handle = drm_agp_allocate_memory (pages, type))) {
	290	spin_lock(&drm_mem_lock);
	291	++drm_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
	292	drm_mem_stats[DRM_MEM_TOTALAGP].bytes_allocated
b5e89ed5	293	+= pages << PAGE_SHIFT;
f0c408b5	294	spin_unlock(&drm_mem_lock);
1da177e4 LT	295	return handle;
1da177e4 LT	296	}
f0c408b5 DA	297	spin_lock(&drm_mem_lock);
	298	++drm_mem_stats[DRM_MEM_TOTALAGP].fail_count;
	299	spin_unlock(&drm_mem_lock);
1da177e4 LT	300	return NULL;
	301	}
	302
f0c408b5	303	int drm_free_agp (DRM_AGP_MEM * handle, int pages) {
b5e89ed5 DA	304	int alloc_count;
	305	int free_count;
	306	int retval = -EINVAL;
1da177e4 LT	307
	308	if (!handle) {
	309	DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
	310	"Attempt to free NULL AGP handle\n");
	311	return retval;
	312	}
	313
f0c408b5 DA	314	if (drm_agp_free_memory (handle)) {
	315	spin_lock(&drm_mem_lock);
	316	free_count = ++drm_mem_stats[DRM_MEM_TOTALAGP].free_count;
	317	alloc_count = drm_mem_stats[DRM_MEM_TOTALAGP].succeed_count;
	318	drm_mem_stats[DRM_MEM_TOTALAGP].bytes_freed
b5e89ed5	319	+= pages << PAGE_SHIFT;
f0c408b5	320	spin_unlock(&drm_mem_lock);
1da177e4 LT	321	if (free_count > alloc_count) {
	322	DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
	323	"Excess frees: %d frees, %d allocs\n",
	324	free_count, alloc_count);
	325	}
	326	return 0;
	327	}
	328	return retval;
	329	}
	330
f0c408b5	331	int drm_bind_agp (DRM_AGP_MEM * handle, unsigned int start) {
1da177e4 LT	332	int retcode = -EINVAL;
	333
	334	if (!handle) {
	335	DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
	336	"Attempt to bind NULL AGP handle\n");
	337	return retcode;
	338	}
	339
f0c408b5 DA	340	if (!(retcode = drm_agp_bind_memory (handle, start))) {
	341	spin_lock(&drm_mem_lock);
	342	++drm_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
	343	drm_mem_stats[DRM_MEM_BOUNDAGP].bytes_allocated
b5e89ed5	344	+= handle->page_count << PAGE_SHIFT;
f0c408b5	345	spin_unlock(&drm_mem_lock);
1da177e4 LT	346	return retcode;
1da177e4 LT	347	}
f0c408b5 DA	348	spin_lock(&drm_mem_lock);
	349	++drm_mem_stats[DRM_MEM_BOUNDAGP].fail_count;
	350	spin_unlock(&drm_mem_lock);
1da177e4 LT	351	return retcode;
	352	}
	353
f0c408b5	354	int drm_unbind_agp (DRM_AGP_MEM * handle) {
1da177e4 LT	355	int alloc_count;
	356	int free_count;
	357	int retcode = -EINVAL;
	358
	359	if (!handle) {
	360	DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
	361	"Attempt to unbind NULL AGP handle\n");
	362	return retcode;
	363	}
	364
f0c408b5	365	if ((retcode = drm_agp_unbind_memory (handle)))
b5e89ed5	366	return retcode;
f0c408b5 DA	367	spin_lock(&drm_mem_lock);
	368	free_count = ++drm_mem_stats[DRM_MEM_BOUNDAGP].free_count;
	369	alloc_count = drm_mem_stats[DRM_MEM_BOUNDAGP].succeed_count;
	370	drm_mem_stats[DRM_MEM_BOUNDAGP].bytes_freed
b5e89ed5	371	+= handle->page_count << PAGE_SHIFT;
f0c408b5	372	spin_unlock(&drm_mem_lock);
1da177e4 LT	373	if (free_count > alloc_count) {
	374	DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
	375	"Excess frees: %d frees, %d allocs\n",
	376	free_count, alloc_count);
	377	}
	378	return retcode;
	379	}
	380	#endif