summaryrefslogtreecommitdiff
path: root/bsd-core/drm_memory.c
blob: 605b42ae677cb536d8b0c829d1bd496fc81a5b77 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
/* drm_memory.h -- Memory management wrappers for DRM -*- linux-c -*-
 * Created: Thu Feb  4 14:00:34 1999 by faith@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.
 *
 * Authors:
 *    Rickard E. (Rik) Faith <faith@valinux.com>
 *    Gareth Hughes <gareth@valinux.com>
 */

#define __NO_VERSION__
#include "drmP.h"
#include <vm/vm.h>
#include <vm/pmap.h>
#if __REALLY_HAVE_AGP
#include <sys/agpio.h>
#endif

#define malloctype DRM(M_DRM)
/* The macros confliced in the MALLOC_DEFINE */

MALLOC_DEFINE(malloctype, "drm", "DRM Data Structures");

#undef malloctype

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 DRM_OS_SPINTYPE	  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_STUB]      = { "stub"     },
	{ NULL, 0, }		/* Last entry must be null */
};

void DRM(mem_init)(void)
{
	drm_mem_stats_t *mem;

	DRM_OS_SPININIT(DRM(mem_lock), "drm memory");

	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;
	}

	DRM(ram_available) = 0; /* si.totalram */
	DRM(ram_used)	   = 0;
}

/* drm_mem_info is called whenever a process reads /dev/drm/mem. */

static int DRM(_mem_info) DRM_SYSCTL_HANDLER_ARGS
{
	drm_mem_stats_t *pt;
	char buf[128];
	int error;

	DRM_SYSCTL_PRINT("		  total counts			"
		       " |    outstanding  \n");
	DRM_SYSCTL_PRINT("type	   alloc freed fail	bytes	   freed"
		       " | allocs      bytes\n\n");
	DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu	    |\n",
		       "system", 0, 0, 0, DRM(ram_available));
	DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu	    |\n",
		       "locked", 0, 0, 0, DRM(ram_used));
	DRM_SYSCTL_PRINT("\n");
	for (pt = DRM(mem_stats); pt->name; pt++) {
		DRM_SYSCTL_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);
	}
	SYSCTL_OUT(req, "", 1);
	
	return 0;
}

int DRM(mem_info) DRM_SYSCTL_HANDLER_ARGS
{
	int ret;

	DRM_OS_SPINLOCK(&DRM(mem_lock));
	ret = DRM(_mem_info)(oidp, arg1, arg2, req);
	DRM_OS_SPINUNLOCK(&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 = malloc(size, DRM(M_DRM), M_NOWAIT))) {
		DRM_OS_SPINLOCK(&DRM(mem_lock));
		++DRM(mem_stats)[area].fail_count;
		DRM_OS_SPINUNLOCK(&DRM(mem_lock));
		return NULL;
	}
	DRM_OS_SPINLOCK(&DRM(mem_lock));
	++DRM(mem_stats)[area].succeed_count;
	DRM(mem_stats)[area].bytes_allocated += size;
	DRM_OS_SPINUNLOCK(&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)(char *s, int area)
{
	unsigned int size;

	if (!s) return;

	size = 1 + strlen(s);
	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     free(pt, DRM(M_DRM));
	DRM_OS_SPINLOCK(&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;
	DRM_OS_SPINUNLOCK(&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)
{
	vm_offset_t address;
	unsigned long bytes	  = PAGE_SIZE << order;


	address = (vm_offset_t) contigmalloc(bytes, DRM(M_DRM), M_WAITOK, 0, ~0, 1, 0);
	if (!address) {
		DRM_OS_SPINLOCK(&DRM(mem_lock));
		++DRM(mem_stats)[area].fail_count;
		DRM_OS_SPINUNLOCK(&DRM(mem_lock));
		return 0;
	}
	DRM_OS_SPINLOCK(&DRM(mem_lock));
	++DRM(mem_stats)[area].succeed_count;
	DRM(mem_stats)[area].bytes_allocated += bytes;
	DRM(ram_used)		             += bytes;
	DRM_OS_SPINUNLOCK(&DRM(mem_lock));


				/* Zero outside the lock */
	memset((void *)address, 0, bytes);


	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;

	if (!address) {
		DRM_MEM_ERROR(area, "Attempt to free address 0\n");
	} else {
		contigfree((void *) address, bytes, DRM(M_DRM));
	}

	DRM_OS_SPINLOCK(&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;
	DRM_OS_SPINUNLOCK(&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 = pmap_mapdev(offset, size))) {
		DRM_OS_SPINLOCK(&DRM(mem_lock));
		++DRM(mem_stats)[DRM_MEM_MAPPINGS].fail_count;
		DRM_OS_SPINUNLOCK(&DRM(mem_lock));
		return NULL;
	}
	DRM_OS_SPINLOCK(&DRM(mem_lock));
	++DRM(mem_stats)[DRM_MEM_MAPPINGS].succeed_count;
	DRM(mem_stats)[DRM_MEM_MAPPINGS].bytes_allocated += size;
	DRM_OS_SPINUNLOCK(&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
		pmap_unmapdev((vm_offset_t) pt, size);

	DRM_OS_SPINLOCK(&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;
	DRM_OS_SPINUNLOCK(&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 __REALLY_HAVE_AGP
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))) {
		DRM_OS_SPINLOCK(&DRM(mem_lock));
		++DRM(mem_stats)[DRM_MEM_TOTALAGP].succeed_count;
		DRM(mem_stats)[DRM_MEM_TOTALAGP].bytes_allocated
			+= pages << PAGE_SHIFT;
		DRM_OS_SPINUNLOCK(&DRM(mem_lock));
		return handle;
	}
	DRM_OS_SPINLOCK(&DRM(mem_lock));
	++DRM(mem_stats)[DRM_MEM_TOTALAGP].fail_count;
	DRM_OS_SPINUNLOCK(&DRM(mem_lock));
	return NULL;
}

int DRM(free_agp)(agp_memory *handle, int pages)
{
	int           alloc_count;
	int           free_count;

	if (!handle) {
		DRM_MEM_ERROR(DRM_MEM_TOTALAGP,
			      "Attempt to free NULL AGP handle\n");
		DRM_OS_RETURN(EINVAL);
	}

	if (DRM(agp_free_memory)(handle)) {
		DRM_OS_SPINLOCK(&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;
		DRM_OS_SPINUNLOCK(&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;
	}
	DRM_OS_RETURN(EINVAL);
}

int DRM(bind_agp)(agp_memory *handle, unsigned int start)
{
	int retcode;
	device_t dev = agp_find_device();
	struct agp_memory_info info;

	if (!dev)
		return EINVAL;

	if (!handle) {
		DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
			      "Attempt to bind NULL AGP handle\n");
		DRM_OS_RETURN(EINVAL);
	}

	if (!(retcode = DRM(agp_bind_memory)(handle, start))) {
		DRM_OS_SPINLOCK(&DRM(mem_lock));
		++DRM(mem_stats)[DRM_MEM_BOUNDAGP].succeed_count;
		agp_memory_info(dev, handle, &info);
		DRM(mem_stats)[DRM_MEM_BOUNDAGP].bytes_allocated
			+= info.ami_size;
		DRM_OS_SPINUNLOCK(&DRM(mem_lock));
		DRM_OS_RETURN(0);
	}
	DRM_OS_SPINLOCK(&DRM(mem_lock));
	++DRM(mem_stats)[DRM_MEM_BOUNDAGP].fail_count;
	DRM_OS_SPINUNLOCK(&DRM(mem_lock));
	DRM_OS_RETURN(retcode);
}

int DRM(unbind_agp)(agp_memory *handle)
{
	int alloc_count;
	int free_count;
	int retcode = EINVAL;
	device_t dev = agp_find_device();
	struct agp_memory_info info;

	if (!dev)
		return EINVAL;

	if (!handle) {
		DRM_MEM_ERROR(DRM_MEM_BOUNDAGP,
			      "Attempt to unbind NULL AGP handle\n");
		DRM_OS_RETURN(retcode);
	}

	agp_memory_info(dev, handle, &info);

	if ((retcode = DRM(agp_unbind_memory)(handle))) 
		DRM_OS_RETURN(retcode);

	DRM_OS_SPINLOCK(&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
		+= info.ami_size;
	DRM_OS_SPINUNLOCK(&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);
	}
	DRM_OS_RETURN(retcode);
}
#endif