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1 | /* |
2 | * Copyright 2005-2006 Stephane Marchesin | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |
6 | * copy of this software and associated documentation files (the "Software"), | |
7 | * to deal in the Software without restriction, including without limitation | |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
9 | * and/or sell copies of the Software, and to permit persons to whom the | |
10 | * Software is furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice (including the next | |
13 | * paragraph) shall be included in all copies or substantial portions of the | |
14 | * Software. | |
15 | * | |
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 | * PRECISION INSIGHT AND/OR ITS SUPPLIERS 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 OTHER | |
22 | * DEALINGS IN THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include "drmP.h" | |
26 | #include "drm.h" | |
27 | #include "nouveau_drv.h" | |
28 | #include "nouveau_drm.h" | |
29 | #include "nouveau_dma.h" | |
30 | ||
31 | static int | |
32 | nouveau_channel_pushbuf_ctxdma_init(struct nouveau_channel *chan) | |
33 | { | |
34 | struct drm_device *dev = chan->dev; | |
35 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
36 | struct nouveau_bo *pb = chan->pushbuf_bo; | |
37 | struct nouveau_gpuobj *pushbuf = NULL; | |
38 | uint32_t start = pb->bo.mem.mm_node->start << PAGE_SHIFT; | |
39 | int ret; | |
40 | ||
41 | if (pb->bo.mem.mem_type == TTM_PL_TT) { | |
42 | ret = nouveau_gpuobj_gart_dma_new(chan, 0, | |
43 | dev_priv->gart_info.aper_size, | |
44 | NV_DMA_ACCESS_RO, &pushbuf, | |
45 | NULL); | |
46 | chan->pushbuf_base = start; | |
47 | } else | |
48 | if (dev_priv->card_type != NV_04) { | |
49 | ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, 0, | |
50 | dev_priv->fb_available_size, | |
51 | NV_DMA_ACCESS_RO, | |
52 | NV_DMA_TARGET_VIDMEM, &pushbuf); | |
53 | chan->pushbuf_base = start; | |
54 | } else { | |
55 | /* NV04 cmdbuf hack, from original ddx.. not sure of it's | |
56 | * exact reason for existing :) PCI access to cmdbuf in | |
57 | * VRAM. | |
58 | */ | |
59 | ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, | |
60 | drm_get_resource_start(dev, 1), | |
61 | dev_priv->fb_available_size, | |
62 | NV_DMA_ACCESS_RO, | |
63 | NV_DMA_TARGET_PCI, &pushbuf); | |
64 | chan->pushbuf_base = start; | |
65 | } | |
66 | ||
67 | ret = nouveau_gpuobj_ref_add(dev, chan, 0, pushbuf, &chan->pushbuf); | |
68 | if (ret) { | |
69 | NV_ERROR(dev, "Error referencing pushbuf ctxdma: %d\n", ret); | |
70 | if (pushbuf != dev_priv->gart_info.sg_ctxdma) | |
71 | nouveau_gpuobj_del(dev, &pushbuf); | |
72 | return ret; | |
73 | } | |
74 | ||
75 | return 0; | |
76 | } | |
77 | ||
78 | static struct nouveau_bo * | |
79 | nouveau_channel_user_pushbuf_alloc(struct drm_device *dev) | |
80 | { | |
81 | struct nouveau_bo *pushbuf = NULL; | |
82 | int location, ret; | |
83 | ||
84 | if (nouveau_vram_pushbuf) | |
85 | location = TTM_PL_FLAG_VRAM; | |
86 | else | |
87 | location = TTM_PL_FLAG_TT; | |
88 | ||
89 | ret = nouveau_bo_new(dev, NULL, 65536, 0, location, 0, 0x0000, false, | |
90 | true, &pushbuf); | |
91 | if (ret) { | |
92 | NV_ERROR(dev, "error allocating DMA push buffer: %d\n", ret); | |
93 | return NULL; | |
94 | } | |
95 | ||
96 | ret = nouveau_bo_pin(pushbuf, location); | |
97 | if (ret) { | |
98 | NV_ERROR(dev, "error pinning DMA push buffer: %d\n", ret); | |
99 | nouveau_bo_ref(NULL, &pushbuf); | |
100 | return NULL; | |
101 | } | |
102 | ||
103 | return pushbuf; | |
104 | } | |
105 | ||
106 | /* allocates and initializes a fifo for user space consumption */ | |
107 | int | |
108 | nouveau_channel_alloc(struct drm_device *dev, struct nouveau_channel **chan_ret, | |
109 | struct drm_file *file_priv, | |
110 | uint32_t vram_handle, uint32_t tt_handle) | |
111 | { | |
112 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
113 | struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph; | |
114 | struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo; | |
115 | struct nouveau_channel *chan; | |
116 | int channel, user; | |
117 | int ret; | |
118 | ||
119 | /* | |
120 | * Alright, here is the full story | |
121 | * Nvidia cards have multiple hw fifo contexts (praise them for that, | |
122 | * no complicated crash-prone context switches) | |
123 | * We allocate a new context for each app and let it write to it | |
124 | * directly (woo, full userspace command submission !) | |
125 | * When there are no more contexts, you lost | |
126 | */ | |
127 | for (channel = 0; channel < pfifo->channels; channel++) { | |
128 | if (dev_priv->fifos[channel] == NULL) | |
129 | break; | |
130 | } | |
131 | ||
132 | /* no more fifos. you lost. */ | |
133 | if (channel == pfifo->channels) | |
134 | return -EINVAL; | |
135 | ||
136 | dev_priv->fifos[channel] = kzalloc(sizeof(struct nouveau_channel), | |
137 | GFP_KERNEL); | |
138 | if (!dev_priv->fifos[channel]) | |
139 | return -ENOMEM; | |
140 | dev_priv->fifo_alloc_count++; | |
141 | chan = dev_priv->fifos[channel]; | |
142 | INIT_LIST_HEAD(&chan->nvsw.vbl_wait); | |
143 | INIT_LIST_HEAD(&chan->fence.pending); | |
144 | chan->dev = dev; | |
145 | chan->id = channel; | |
146 | chan->file_priv = file_priv; | |
147 | chan->vram_handle = vram_handle; | |
148 | chan->gart_handle = tt_handle; | |
149 | ||
150 | NV_INFO(dev, "Allocating FIFO number %d\n", channel); | |
151 | ||
152 | /* Allocate DMA push buffer */ | |
153 | chan->pushbuf_bo = nouveau_channel_user_pushbuf_alloc(dev); | |
154 | if (!chan->pushbuf_bo) { | |
155 | ret = -ENOMEM; | |
156 | NV_ERROR(dev, "pushbuf %d\n", ret); | |
157 | nouveau_channel_free(chan); | |
158 | return ret; | |
159 | } | |
160 | ||
75c99da6 BS |
161 | nouveau_dma_pre_init(chan); |
162 | ||
6ee73861 BS |
163 | /* Locate channel's user control regs */ |
164 | if (dev_priv->card_type < NV_40) | |
165 | user = NV03_USER(channel); | |
166 | else | |
167 | if (dev_priv->card_type < NV_50) | |
168 | user = NV40_USER(channel); | |
169 | else | |
170 | user = NV50_USER(channel); | |
171 | ||
172 | chan->user = ioremap(pci_resource_start(dev->pdev, 0) + user, | |
173 | PAGE_SIZE); | |
174 | if (!chan->user) { | |
175 | NV_ERROR(dev, "ioremap of regs failed.\n"); | |
176 | nouveau_channel_free(chan); | |
177 | return -ENOMEM; | |
178 | } | |
179 | chan->user_put = 0x40; | |
180 | chan->user_get = 0x44; | |
181 | ||
182 | /* Allocate space for per-channel fixed notifier memory */ | |
183 | ret = nouveau_notifier_init_channel(chan); | |
184 | if (ret) { | |
185 | NV_ERROR(dev, "ntfy %d\n", ret); | |
186 | nouveau_channel_free(chan); | |
187 | return ret; | |
188 | } | |
189 | ||
190 | /* Setup channel's default objects */ | |
191 | ret = nouveau_gpuobj_channel_init(chan, vram_handle, tt_handle); | |
192 | if (ret) { | |
193 | NV_ERROR(dev, "gpuobj %d\n", ret); | |
194 | nouveau_channel_free(chan); | |
195 | return ret; | |
196 | } | |
197 | ||
198 | /* Create a dma object for the push buffer */ | |
199 | ret = nouveau_channel_pushbuf_ctxdma_init(chan); | |
200 | if (ret) { | |
201 | NV_ERROR(dev, "pbctxdma %d\n", ret); | |
202 | nouveau_channel_free(chan); | |
203 | return ret; | |
204 | } | |
205 | ||
206 | /* disable the fifo caches */ | |
207 | pfifo->reassign(dev, false); | |
208 | ||
209 | /* Create a graphics context for new channel */ | |
210 | ret = pgraph->create_context(chan); | |
211 | if (ret) { | |
212 | nouveau_channel_free(chan); | |
213 | return ret; | |
214 | } | |
215 | ||
216 | /* Construct inital RAMFC for new channel */ | |
217 | ret = pfifo->create_context(chan); | |
218 | if (ret) { | |
219 | nouveau_channel_free(chan); | |
220 | return ret; | |
221 | } | |
222 | ||
223 | pfifo->reassign(dev, true); | |
224 | ||
225 | ret = nouveau_dma_init(chan); | |
226 | if (!ret) | |
227 | ret = nouveau_fence_init(chan); | |
228 | if (ret) { | |
229 | nouveau_channel_free(chan); | |
230 | return ret; | |
231 | } | |
232 | ||
233 | nouveau_debugfs_channel_init(chan); | |
234 | ||
235 | NV_INFO(dev, "%s: initialised FIFO %d\n", __func__, channel); | |
236 | *chan_ret = chan; | |
237 | return 0; | |
238 | } | |
239 | ||
6ee73861 BS |
240 | /* stops a fifo */ |
241 | void | |
242 | nouveau_channel_free(struct nouveau_channel *chan) | |
243 | { | |
244 | struct drm_device *dev = chan->dev; | |
245 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
246 | struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph; | |
247 | struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo; | |
248 | unsigned long flags; | |
249 | int ret; | |
250 | ||
251 | NV_INFO(dev, "%s: freeing fifo %d\n", __func__, chan->id); | |
252 | ||
253 | nouveau_debugfs_channel_fini(chan); | |
254 | ||
255 | /* Give outstanding push buffers a chance to complete */ | |
256 | spin_lock_irqsave(&chan->fence.lock, flags); | |
257 | nouveau_fence_update(chan); | |
258 | spin_unlock_irqrestore(&chan->fence.lock, flags); | |
259 | if (chan->fence.sequence != chan->fence.sequence_ack) { | |
260 | struct nouveau_fence *fence = NULL; | |
261 | ||
262 | ret = nouveau_fence_new(chan, &fence, true); | |
263 | if (ret == 0) { | |
264 | ret = nouveau_fence_wait(fence, NULL, false, false); | |
265 | nouveau_fence_unref((void *)&fence); | |
266 | } | |
267 | ||
268 | if (ret) | |
269 | NV_ERROR(dev, "Failed to idle channel %d.\n", chan->id); | |
270 | } | |
271 | ||
272 | /* Ensure all outstanding fences are signaled. They should be if the | |
273 | * above attempts at idling were OK, but if we failed this'll tell TTM | |
274 | * we're done with the buffers. | |
275 | */ | |
276 | nouveau_fence_fini(chan); | |
277 | ||
278 | /* Ensure the channel is no longer active on the GPU */ | |
279 | pfifo->reassign(dev, false); | |
280 | ||
281 | if (pgraph->channel(dev) == chan) { | |
282 | pgraph->fifo_access(dev, false); | |
283 | pgraph->unload_context(dev); | |
284 | pgraph->fifo_access(dev, true); | |
285 | } | |
286 | pgraph->destroy_context(chan); | |
287 | ||
288 | if (pfifo->channel_id(dev) == chan->id) { | |
289 | pfifo->disable(dev); | |
290 | pfifo->unload_context(dev); | |
291 | pfifo->enable(dev); | |
292 | } | |
293 | pfifo->destroy_context(chan); | |
294 | ||
295 | pfifo->reassign(dev, true); | |
296 | ||
297 | /* Release the channel's resources */ | |
298 | nouveau_gpuobj_ref_del(dev, &chan->pushbuf); | |
299 | if (chan->pushbuf_bo) { | |
300 | nouveau_bo_unpin(chan->pushbuf_bo); | |
301 | nouveau_bo_ref(NULL, &chan->pushbuf_bo); | |
302 | } | |
303 | nouveau_gpuobj_channel_takedown(chan); | |
304 | nouveau_notifier_takedown_channel(chan); | |
305 | if (chan->user) | |
306 | iounmap(chan->user); | |
307 | ||
308 | dev_priv->fifos[chan->id] = NULL; | |
309 | dev_priv->fifo_alloc_count--; | |
310 | kfree(chan); | |
311 | } | |
312 | ||
313 | /* cleans up all the fifos from file_priv */ | |
314 | void | |
315 | nouveau_channel_cleanup(struct drm_device *dev, struct drm_file *file_priv) | |
316 | { | |
317 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
318 | struct nouveau_engine *engine = &dev_priv->engine; | |
319 | int i; | |
320 | ||
321 | NV_DEBUG(dev, "clearing FIFO enables from file_priv\n"); | |
322 | for (i = 0; i < engine->fifo.channels; i++) { | |
323 | struct nouveau_channel *chan = dev_priv->fifos[i]; | |
324 | ||
325 | if (chan && chan->file_priv == file_priv) | |
326 | nouveau_channel_free(chan); | |
327 | } | |
328 | } | |
329 | ||
330 | int | |
331 | nouveau_channel_owner(struct drm_device *dev, struct drm_file *file_priv, | |
332 | int channel) | |
333 | { | |
334 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
335 | struct nouveau_engine *engine = &dev_priv->engine; | |
336 | ||
337 | if (channel >= engine->fifo.channels) | |
338 | return 0; | |
339 | if (dev_priv->fifos[channel] == NULL) | |
340 | return 0; | |
341 | ||
342 | return (dev_priv->fifos[channel]->file_priv == file_priv); | |
343 | } | |
344 | ||
345 | /*********************************** | |
346 | * ioctls wrapping the functions | |
347 | ***********************************/ | |
348 | ||
349 | static int | |
350 | nouveau_ioctl_fifo_alloc(struct drm_device *dev, void *data, | |
351 | struct drm_file *file_priv) | |
352 | { | |
353 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
354 | struct drm_nouveau_channel_alloc *init = data; | |
355 | struct nouveau_channel *chan; | |
356 | int ret; | |
357 | ||
358 | NOUVEAU_CHECK_INITIALISED_WITH_RETURN; | |
359 | ||
360 | if (dev_priv->engine.graph.accel_blocked) | |
361 | return -ENODEV; | |
362 | ||
363 | if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0) | |
364 | return -EINVAL; | |
365 | ||
366 | ret = nouveau_channel_alloc(dev, &chan, file_priv, | |
367 | init->fb_ctxdma_handle, | |
368 | init->tt_ctxdma_handle); | |
369 | if (ret) | |
370 | return ret; | |
371 | init->channel = chan->id; | |
372 | ||
373 | init->subchan[0].handle = NvM2MF; | |
374 | if (dev_priv->card_type < NV_50) | |
375 | init->subchan[0].grclass = 0x0039; | |
376 | else | |
377 | init->subchan[0].grclass = 0x5039; | |
f03a314b FJ |
378 | init->subchan[1].handle = NvSw; |
379 | init->subchan[1].grclass = NV_SW; | |
380 | init->nr_subchan = 2; | |
6ee73861 BS |
381 | |
382 | /* Named memory object area */ | |
383 | ret = drm_gem_handle_create(file_priv, chan->notifier_bo->gem, | |
384 | &init->notifier_handle); | |
385 | if (ret) { | |
386 | nouveau_channel_free(chan); | |
387 | return ret; | |
388 | } | |
389 | ||
390 | return 0; | |
391 | } | |
392 | ||
393 | static int | |
394 | nouveau_ioctl_fifo_free(struct drm_device *dev, void *data, | |
395 | struct drm_file *file_priv) | |
396 | { | |
397 | struct drm_nouveau_channel_free *cfree = data; | |
398 | struct nouveau_channel *chan; | |
399 | ||
400 | NOUVEAU_CHECK_INITIALISED_WITH_RETURN; | |
401 | NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(cfree->channel, file_priv, chan); | |
402 | ||
403 | nouveau_channel_free(chan); | |
404 | return 0; | |
405 | } | |
406 | ||
407 | /*********************************** | |
408 | * finally, the ioctl table | |
409 | ***********************************/ | |
410 | ||
411 | struct drm_ioctl_desc nouveau_ioctls[] = { | |
412 | DRM_IOCTL_DEF(DRM_NOUVEAU_CARD_INIT, nouveau_ioctl_card_init, DRM_AUTH), | |
413 | DRM_IOCTL_DEF(DRM_NOUVEAU_GETPARAM, nouveau_ioctl_getparam, DRM_AUTH), | |
414 | DRM_IOCTL_DEF(DRM_NOUVEAU_SETPARAM, nouveau_ioctl_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), | |
415 | DRM_IOCTL_DEF(DRM_NOUVEAU_CHANNEL_ALLOC, nouveau_ioctl_fifo_alloc, DRM_AUTH), | |
416 | DRM_IOCTL_DEF(DRM_NOUVEAU_CHANNEL_FREE, nouveau_ioctl_fifo_free, DRM_AUTH), | |
417 | DRM_IOCTL_DEF(DRM_NOUVEAU_GROBJ_ALLOC, nouveau_ioctl_grobj_alloc, DRM_AUTH), | |
418 | DRM_IOCTL_DEF(DRM_NOUVEAU_NOTIFIEROBJ_ALLOC, nouveau_ioctl_notifier_alloc, DRM_AUTH), | |
419 | DRM_IOCTL_DEF(DRM_NOUVEAU_GPUOBJ_FREE, nouveau_ioctl_gpuobj_free, DRM_AUTH), | |
420 | DRM_IOCTL_DEF(DRM_NOUVEAU_GEM_NEW, nouveau_gem_ioctl_new, DRM_AUTH), | |
421 | DRM_IOCTL_DEF(DRM_NOUVEAU_GEM_PUSHBUF, nouveau_gem_ioctl_pushbuf, DRM_AUTH), | |
422 | DRM_IOCTL_DEF(DRM_NOUVEAU_GEM_PUSHBUF_CALL, nouveau_gem_ioctl_pushbuf_call, DRM_AUTH), | |
423 | DRM_IOCTL_DEF(DRM_NOUVEAU_GEM_PIN, nouveau_gem_ioctl_pin, DRM_AUTH), | |
424 | DRM_IOCTL_DEF(DRM_NOUVEAU_GEM_UNPIN, nouveau_gem_ioctl_unpin, DRM_AUTH), | |
425 | DRM_IOCTL_DEF(DRM_NOUVEAU_GEM_CPU_PREP, nouveau_gem_ioctl_cpu_prep, DRM_AUTH), | |
426 | DRM_IOCTL_DEF(DRM_NOUVEAU_GEM_CPU_FINI, nouveau_gem_ioctl_cpu_fini, DRM_AUTH), | |
427 | DRM_IOCTL_DEF(DRM_NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_AUTH), | |
428 | DRM_IOCTL_DEF(DRM_NOUVEAU_GEM_PUSHBUF_CALL2, nouveau_gem_ioctl_pushbuf_call2, DRM_AUTH), | |
429 | }; | |
430 | ||
431 | int nouveau_max_ioctl = DRM_ARRAY_SIZE(nouveau_ioctls); |