2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
24 * Authors: Dave Airlie
28 #include <linux/seq_file.h>
30 #include "radeon_drm.h"
31 #include "radeon_reg.h"
35 int radeon_debugfs_ib_init(struct radeon_device
*rdev
);
37 void radeon_ib_bogus_cleanup(struct radeon_device
*rdev
)
39 struct radeon_ib
*ib
, *n
;
41 list_for_each_entry_safe(ib
, n
, &rdev
->ib_pool
.bogus_ib
, list
) {
48 void radeon_ib_bogus_add(struct radeon_device
*rdev
, struct radeon_ib
*ib
)
50 struct radeon_ib
*bib
;
52 bib
= kmalloc(sizeof(*bib
), GFP_KERNEL
);
55 bib
->ptr
= vmalloc(ib
->length_dw
* 4);
56 if (bib
->ptr
== NULL
) {
60 memcpy(bib
->ptr
, ib
->ptr
, ib
->length_dw
* 4);
61 bib
->length_dw
= ib
->length_dw
;
62 mutex_lock(&rdev
->ib_pool
.mutex
);
63 list_add_tail(&bib
->list
, &rdev
->ib_pool
.bogus_ib
);
64 mutex_unlock(&rdev
->ib_pool
.mutex
);
70 int radeon_ib_get(struct radeon_device
*rdev
, struct radeon_ib
**ib
)
72 struct radeon_fence
*fence
;
73 struct radeon_ib
*nib
;
77 r
= radeon_fence_create(rdev
, &fence
);
79 dev_err(rdev
->dev
, "failed to create fence for new IB\n");
82 mutex_lock(&rdev
->ib_pool
.mutex
);
83 for (i
= rdev
->ib_pool
.head_id
, c
= 0, nib
= NULL
; c
< RADEON_IB_POOL_SIZE
; c
++, i
++) {
84 i
&= (RADEON_IB_POOL_SIZE
- 1);
85 if (rdev
->ib_pool
.ibs
[i
].free
) {
86 nib
= &rdev
->ib_pool
.ibs
[i
];
91 /* This should never happen, it means we allocated all
92 * IB and haven't scheduled one yet, return EBUSY to
93 * userspace hoping that on ioctl recall we get better
96 dev_err(rdev
->dev
, "no free indirect buffer !\n");
97 mutex_unlock(&rdev
->ib_pool
.mutex
);
98 radeon_fence_unref(&fence
);
101 rdev
->ib_pool
.head_id
= (nib
->idx
+ 1) & (RADEON_IB_POOL_SIZE
- 1);
104 mutex_unlock(&rdev
->ib_pool
.mutex
);
105 r
= radeon_fence_wait(nib
->fence
, false);
107 dev_err(rdev
->dev
, "error waiting fence of IB(%u:0x%016lX:%u)\n",
108 nib
->idx
, (unsigned long)nib
->gpu_addr
, nib
->length_dw
);
109 mutex_lock(&rdev
->ib_pool
.mutex
);
111 mutex_unlock(&rdev
->ib_pool
.mutex
);
112 radeon_fence_unref(&fence
);
115 mutex_lock(&rdev
->ib_pool
.mutex
);
117 radeon_fence_unref(&nib
->fence
);
120 mutex_unlock(&rdev
->ib_pool
.mutex
);
125 void radeon_ib_free(struct radeon_device
*rdev
, struct radeon_ib
**ib
)
127 struct radeon_ib
*tmp
= *ib
;
133 if (!tmp
->fence
->emited
)
134 radeon_fence_unref(&tmp
->fence
);
135 mutex_lock(&rdev
->ib_pool
.mutex
);
137 mutex_unlock(&rdev
->ib_pool
.mutex
);
140 int radeon_ib_schedule(struct radeon_device
*rdev
, struct radeon_ib
*ib
)
144 if (!ib
->length_dw
|| !rdev
->cp
.ready
) {
145 /* TODO: Nothings in the ib we should report. */
146 DRM_ERROR("radeon: couldn't schedule IB(%u).\n", ib
->idx
);
150 /* 64 dwords should be enough for fence too */
151 r
= radeon_ring_lock(rdev
, 64);
153 DRM_ERROR("radeon: scheduling IB failled (%d).\n", r
);
156 radeon_ring_ib_execute(rdev
, ib
);
157 radeon_fence_emit(rdev
, ib
->fence
);
158 mutex_lock(&rdev
->ib_pool
.mutex
);
159 /* once scheduled IB is considered free and protected by the fence */
161 mutex_unlock(&rdev
->ib_pool
.mutex
);
162 radeon_ring_unlock_commit(rdev
);
166 int radeon_ib_pool_init(struct radeon_device
*rdev
)
173 if (rdev
->ib_pool
.robj
)
175 INIT_LIST_HEAD(&rdev
->ib_pool
.bogus_ib
);
176 /* Allocate 1M object buffer */
177 r
= radeon_bo_create(rdev
, NULL
, RADEON_IB_POOL_SIZE
*64*1024,
178 true, RADEON_GEM_DOMAIN_GTT
,
179 &rdev
->ib_pool
.robj
);
181 DRM_ERROR("radeon: failed to ib pool (%d).\n", r
);
184 r
= radeon_bo_reserve(rdev
->ib_pool
.robj
, false);
185 if (unlikely(r
!= 0))
187 r
= radeon_bo_pin(rdev
->ib_pool
.robj
, RADEON_GEM_DOMAIN_GTT
, &gpu_addr
);
189 radeon_bo_unreserve(rdev
->ib_pool
.robj
);
190 DRM_ERROR("radeon: failed to pin ib pool (%d).\n", r
);
193 r
= radeon_bo_kmap(rdev
->ib_pool
.robj
, &ptr
);
194 radeon_bo_unreserve(rdev
->ib_pool
.robj
);
196 DRM_ERROR("radeon: failed to map ib poll (%d).\n", r
);
199 for (i
= 0; i
< RADEON_IB_POOL_SIZE
; i
++) {
202 offset
= i
* 64 * 1024;
203 rdev
->ib_pool
.ibs
[i
].gpu_addr
= gpu_addr
+ offset
;
204 rdev
->ib_pool
.ibs
[i
].ptr
= ptr
+ offset
;
205 rdev
->ib_pool
.ibs
[i
].idx
= i
;
206 rdev
->ib_pool
.ibs
[i
].length_dw
= 0;
207 rdev
->ib_pool
.ibs
[i
].free
= true;
209 rdev
->ib_pool
.head_id
= 0;
210 rdev
->ib_pool
.ready
= true;
211 DRM_INFO("radeon: ib pool ready.\n");
212 if (radeon_debugfs_ib_init(rdev
)) {
213 DRM_ERROR("Failed to register debugfs file for IB !\n");
218 void radeon_ib_pool_fini(struct radeon_device
*rdev
)
222 if (!rdev
->ib_pool
.ready
) {
225 mutex_lock(&rdev
->ib_pool
.mutex
);
226 radeon_ib_bogus_cleanup(rdev
);
228 if (rdev
->ib_pool
.robj
) {
229 r
= radeon_bo_reserve(rdev
->ib_pool
.robj
, false);
230 if (likely(r
== 0)) {
231 radeon_bo_kunmap(rdev
->ib_pool
.robj
);
232 radeon_bo_unpin(rdev
->ib_pool
.robj
);
233 radeon_bo_unreserve(rdev
->ib_pool
.robj
);
235 radeon_bo_unref(&rdev
->ib_pool
.robj
);
236 rdev
->ib_pool
.robj
= NULL
;
238 mutex_unlock(&rdev
->ib_pool
.mutex
);
245 void radeon_ring_free_size(struct radeon_device
*rdev
)
247 if (rdev
->family
>= CHIP_R600
)
248 rdev
->cp
.rptr
= RREG32(R600_CP_RB_RPTR
);
250 rdev
->cp
.rptr
= RREG32(RADEON_CP_RB_RPTR
);
251 /* This works because ring_size is a power of 2 */
252 rdev
->cp
.ring_free_dw
= (rdev
->cp
.rptr
+ (rdev
->cp
.ring_size
/ 4));
253 rdev
->cp
.ring_free_dw
-= rdev
->cp
.wptr
;
254 rdev
->cp
.ring_free_dw
&= rdev
->cp
.ptr_mask
;
255 if (!rdev
->cp
.ring_free_dw
) {
256 rdev
->cp
.ring_free_dw
= rdev
->cp
.ring_size
/ 4;
260 int radeon_ring_lock(struct radeon_device
*rdev
, unsigned ndw
)
264 /* Align requested size with padding so unlock_commit can
266 ndw
= (ndw
+ rdev
->cp
.align_mask
) & ~rdev
->cp
.align_mask
;
267 mutex_lock(&rdev
->cp
.mutex
);
268 while (ndw
> (rdev
->cp
.ring_free_dw
- 1)) {
269 radeon_ring_free_size(rdev
);
270 if (ndw
< rdev
->cp
.ring_free_dw
) {
273 r
= radeon_fence_wait_next(rdev
);
275 mutex_unlock(&rdev
->cp
.mutex
);
279 rdev
->cp
.count_dw
= ndw
;
280 rdev
->cp
.wptr_old
= rdev
->cp
.wptr
;
284 void radeon_ring_unlock_commit(struct radeon_device
*rdev
)
286 unsigned count_dw_pad
;
289 /* We pad to match fetch size */
290 count_dw_pad
= (rdev
->cp
.align_mask
+ 1) -
291 (rdev
->cp
.wptr
& rdev
->cp
.align_mask
);
292 for (i
= 0; i
< count_dw_pad
; i
++) {
293 radeon_ring_write(rdev
, 2 << 30);
296 radeon_cp_commit(rdev
);
297 mutex_unlock(&rdev
->cp
.mutex
);
300 void radeon_ring_unlock_undo(struct radeon_device
*rdev
)
302 rdev
->cp
.wptr
= rdev
->cp
.wptr_old
;
303 mutex_unlock(&rdev
->cp
.mutex
);
306 int radeon_ring_init(struct radeon_device
*rdev
, unsigned ring_size
)
310 rdev
->cp
.ring_size
= ring_size
;
311 /* Allocate ring buffer */
312 if (rdev
->cp
.ring_obj
== NULL
) {
313 r
= radeon_bo_create(rdev
, NULL
, rdev
->cp
.ring_size
, true,
314 RADEON_GEM_DOMAIN_GTT
,
317 dev_err(rdev
->dev
, "(%d) ring create failed\n", r
);
320 r
= radeon_bo_reserve(rdev
->cp
.ring_obj
, false);
321 if (unlikely(r
!= 0))
323 r
= radeon_bo_pin(rdev
->cp
.ring_obj
, RADEON_GEM_DOMAIN_GTT
,
326 radeon_bo_unreserve(rdev
->cp
.ring_obj
);
327 dev_err(rdev
->dev
, "(%d) ring pin failed\n", r
);
330 r
= radeon_bo_kmap(rdev
->cp
.ring_obj
,
331 (void **)&rdev
->cp
.ring
);
332 radeon_bo_unreserve(rdev
->cp
.ring_obj
);
334 dev_err(rdev
->dev
, "(%d) ring map failed\n", r
);
338 rdev
->cp
.ptr_mask
= (rdev
->cp
.ring_size
/ 4) - 1;
339 rdev
->cp
.ring_free_dw
= rdev
->cp
.ring_size
/ 4;
343 void radeon_ring_fini(struct radeon_device
*rdev
)
347 mutex_lock(&rdev
->cp
.mutex
);
348 if (rdev
->cp
.ring_obj
) {
349 r
= radeon_bo_reserve(rdev
->cp
.ring_obj
, false);
350 if (likely(r
== 0)) {
351 radeon_bo_kunmap(rdev
->cp
.ring_obj
);
352 radeon_bo_unpin(rdev
->cp
.ring_obj
);
353 radeon_bo_unreserve(rdev
->cp
.ring_obj
);
355 radeon_bo_unref(&rdev
->cp
.ring_obj
);
356 rdev
->cp
.ring
= NULL
;
357 rdev
->cp
.ring_obj
= NULL
;
359 mutex_unlock(&rdev
->cp
.mutex
);
366 #if defined(CONFIG_DEBUG_FS)
367 static int radeon_debugfs_ib_info(struct seq_file
*m
, void *data
)
369 struct drm_info_node
*node
= (struct drm_info_node
*) m
->private;
370 struct radeon_ib
*ib
= node
->info_ent
->data
;
376 seq_printf(m
, "IB %04u\n", ib
->idx
);
377 seq_printf(m
, "IB fence %p\n", ib
->fence
);
378 seq_printf(m
, "IB size %05u dwords\n", ib
->length_dw
);
379 for (i
= 0; i
< ib
->length_dw
; i
++) {
380 seq_printf(m
, "[%05u]=0x%08X\n", i
, ib
->ptr
[i
]);
385 static int radeon_debugfs_ib_bogus_info(struct seq_file
*m
, void *data
)
387 struct drm_info_node
*node
= (struct drm_info_node
*) m
->private;
388 struct radeon_device
*rdev
= node
->info_ent
->data
;
389 struct radeon_ib
*ib
;
392 mutex_lock(&rdev
->ib_pool
.mutex
);
393 if (list_empty(&rdev
->ib_pool
.bogus_ib
)) {
394 mutex_unlock(&rdev
->ib_pool
.mutex
);
395 seq_printf(m
, "no bogus IB recorded\n");
398 ib
= list_first_entry(&rdev
->ib_pool
.bogus_ib
, struct radeon_ib
, list
);
399 list_del_init(&ib
->list
);
400 mutex_unlock(&rdev
->ib_pool
.mutex
);
401 seq_printf(m
, "IB size %05u dwords\n", ib
->length_dw
);
402 for (i
= 0; i
< ib
->length_dw
; i
++) {
403 seq_printf(m
, "[%05u]=0x%08X\n", i
, ib
->ptr
[i
]);
410 static struct drm_info_list radeon_debugfs_ib_list
[RADEON_IB_POOL_SIZE
];
411 static char radeon_debugfs_ib_names
[RADEON_IB_POOL_SIZE
][32];
413 static struct drm_info_list radeon_debugfs_ib_bogus_info_list
[] = {
414 {"radeon_ib_bogus", radeon_debugfs_ib_bogus_info
, 0, NULL
},
418 int radeon_debugfs_ib_init(struct radeon_device
*rdev
)
420 #if defined(CONFIG_DEBUG_FS)
424 radeon_debugfs_ib_bogus_info_list
[0].data
= rdev
;
425 r
= radeon_debugfs_add_files(rdev
, radeon_debugfs_ib_bogus_info_list
, 1);
428 for (i
= 0; i
< RADEON_IB_POOL_SIZE
; i
++) {
429 sprintf(radeon_debugfs_ib_names
[i
], "radeon_ib_%04u", i
);
430 radeon_debugfs_ib_list
[i
].name
= radeon_debugfs_ib_names
[i
];
431 radeon_debugfs_ib_list
[i
].show
= &radeon_debugfs_ib_info
;
432 radeon_debugfs_ib_list
[i
].driver_features
= 0;
433 radeon_debugfs_ib_list
[i
].data
= &rdev
->ib_pool
.ibs
[i
];
435 return radeon_debugfs_add_files(rdev
, radeon_debugfs_ib_list
,
436 RADEON_IB_POOL_SIZE
);