1 /*
2  * Copyright 2012 Red Hat Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23 
24 #include <core/object.h>
25 #include <core/client.h>
26 #include <core/device.h>
27 #include <core/class.h>
28 #include <core/mm.h>
29 
30 #include <subdev/fb.h>
31 #include <subdev/timer.h>
32 #include <subdev/instmem.h>
33 #include <engine/graph.h>
34 
35 #include "nouveau_drm.h"
36 #include "nouveau_dma.h"
37 #include "nouveau_gem.h"
38 #include "nouveau_chan.h"
39 #include "nouveau_abi16.h"
40 
41 struct nouveau_abi16 *
42 nouveau_abi16_get(struct drm_file *file_priv, struct drm_device *dev)
43 {
44 	struct nouveau_cli *cli = nouveau_cli(file_priv);
45 	mutex_lock(&cli->mutex);
46 	if (!cli->abi16) {
47 		struct nouveau_abi16 *abi16;
48 		cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
49 		if (cli->abi16) {
50 			INIT_LIST_HEAD(&abi16->channels);
51 			abi16->client = nv_object(cli);
52 
53 			/* allocate device object targeting client's default
54 			 * device (ie. the one that belongs to the fd it
55 			 * opened)
56 			 */
57 			if (nouveau_object_new(abi16->client, NVDRM_CLIENT,
58 					       NVDRM_DEVICE, 0x0080,
59 					       &(struct nv_device_class) {
60 						.device = ~0ULL,
61 					       },
62 					       sizeof(struct nv_device_class),
63 					       &abi16->device) == 0)
64 				return cli->abi16;
65 
66 			kfree(cli->abi16);
67 			cli->abi16 = NULL;
68 		}
69 
70 		mutex_unlock(&cli->mutex);
71 	}
72 	return cli->abi16;
73 }
74 
75 int
76 nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
77 {
78 	struct nouveau_cli *cli = (void *)abi16->client;
79 	mutex_unlock(&cli->mutex);
80 	return ret;
81 }
82 
83 u16
84 nouveau_abi16_swclass(struct nouveau_drm *drm)
85 {
86 	switch (nv_device(drm->device)->card_type) {
87 	case NV_04:
88 		return 0x006e;
89 	case NV_10:
90 	case NV_11:
91 	case NV_20:
92 	case NV_30:
93 	case NV_40:
94 		return 0x016e;
95 	case NV_50:
96 		return 0x506e;
97 	case NV_C0:
98 	case NV_D0:
99 	case NV_E0:
100 		return 0x906e;
101 	}
102 
103 	return 0x0000;
104 }
105 
106 static void
107 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
108 			struct nouveau_abi16_ntfy *ntfy)
109 {
110 	nouveau_mm_free(&chan->heap, &ntfy->node);
111 	list_del(&ntfy->head);
112 	kfree(ntfy);
113 }
114 
115 static void
116 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
117 			struct nouveau_abi16_chan *chan)
118 {
119 	struct nouveau_abi16_ntfy *ntfy, *temp;
120 
121 	/* wait for all activity to stop before releasing notify object, which
122 	 * may be still in use */
123 	if (chan->chan && chan->ntfy)
124 		nouveau_channel_idle(chan->chan);
125 
126 	/* cleanup notifier state */
127 	list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
128 		nouveau_abi16_ntfy_fini(chan, ntfy);
129 	}
130 
131 	if (chan->ntfy) {
132 		nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
133 		nouveau_bo_unpin(chan->ntfy);
134 		drm_gem_object_unreference_unlocked(&chan->ntfy->gem);
135 	}
136 
137 	if (chan->heap.block_size)
138 		nouveau_mm_fini(&chan->heap);
139 
140 	/* destroy channel object, all children will be killed too */
141 	if (chan->chan) {
142 		abi16->handles &= ~(1 << (chan->chan->handle & 0xffff));
143 		nouveau_channel_del(&chan->chan);
144 	}
145 
146 	list_del(&chan->head);
147 	kfree(chan);
148 }
149 
150 void
151 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
152 {
153 	struct nouveau_cli *cli = (void *)abi16->client;
154 	struct nouveau_abi16_chan *chan, *temp;
155 
156 	/* cleanup channels */
157 	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
158 		nouveau_abi16_chan_fini(abi16, chan);
159 	}
160 
161 	/* destroy the device object */
162 	nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);
163 
164 	kfree(cli->abi16);
165 	cli->abi16 = NULL;
166 }
167 
168 int
169 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
170 {
171 	struct nouveau_drm *drm = nouveau_drm(dev);
172 	struct nouveau_device *device = nv_device(drm->device);
173 	struct nouveau_timer *ptimer = nouveau_timer(device);
174 	struct nouveau_graph *graph = (void *)nouveau_engine(device, NVDEV_ENGINE_GR);
175 	struct drm_nouveau_getparam *getparam = data;
176 
177 	switch (getparam->param) {
178 	case NOUVEAU_GETPARAM_CHIPSET_ID:
179 		getparam->value = device->chipset;
180 		break;
181 	case NOUVEAU_GETPARAM_PCI_VENDOR:
182 		getparam->value = dev->pdev->vendor;
183 		break;
184 	case NOUVEAU_GETPARAM_PCI_DEVICE:
185 		getparam->value = dev->pdev->device;
186 		break;
187 	case NOUVEAU_GETPARAM_BUS_TYPE:
188 		if (drm_pci_device_is_agp(dev))
189 			getparam->value = 0;
190 		else
191 		if (!pci_is_pcie(dev->pdev))
192 			getparam->value = 1;
193 		else
194 			getparam->value = 2;
195 		break;
196 	case NOUVEAU_GETPARAM_FB_SIZE:
197 		getparam->value = drm->gem.vram_available;
198 		break;
199 	case NOUVEAU_GETPARAM_AGP_SIZE:
200 		getparam->value = drm->gem.gart_available;
201 		break;
202 	case NOUVEAU_GETPARAM_VM_VRAM_BASE:
203 		getparam->value = 0; /* deprecated */
204 		break;
205 	case NOUVEAU_GETPARAM_PTIMER_TIME:
206 		getparam->value = ptimer->read(ptimer);
207 		break;
208 	case NOUVEAU_GETPARAM_HAS_BO_USAGE:
209 		getparam->value = 1;
210 		break;
211 	case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
212 		getparam->value = 1;
213 		break;
214 	case NOUVEAU_GETPARAM_GRAPH_UNITS:
215 		getparam->value = graph->units ? graph->units(graph) : 0;
216 		break;
217 	default:
218 		nv_debug(device, "unknown parameter %lld\n", getparam->param);
219 		return -EINVAL;
220 	}
221 
222 	return 0;
223 }
224 
225 int
226 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
227 {
228 	return -EINVAL;
229 }
230 
231 int
232 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
233 {
234 	struct drm_nouveau_channel_alloc *init = data;
235 	struct nouveau_cli *cli = nouveau_cli(file_priv);
236 	struct nouveau_drm *drm = nouveau_drm(dev);
237 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
238 	struct nouveau_abi16_chan *chan;
239 	struct nouveau_client *client;
240 	struct nouveau_device *device;
241 	struct nouveau_instmem *imem;
242 	struct nouveau_fb *pfb;
243 	int ret;
244 
245 	if (unlikely(!abi16))
246 		return -ENOMEM;
247 
248 	if (!drm->channel)
249 		return nouveau_abi16_put(abi16, -ENODEV);
250 
251 	client = nv_client(abi16->client);
252 	device = nv_device(abi16->device);
253 	imem   = nouveau_instmem(device);
254 	pfb    = nouveau_fb(device);
255 
256 	/* hack to allow channel engine type specification on kepler */
257 	if (device->card_type >= NV_E0) {
258 		if (init->fb_ctxdma_handle != ~0)
259 			init->fb_ctxdma_handle = NVE0_CHANNEL_IND_ENGINE_GR;
260 		else
261 			init->fb_ctxdma_handle = init->tt_ctxdma_handle;
262 
263 		/* allow flips to be executed if this is a graphics channel */
264 		init->tt_ctxdma_handle = 0;
265 		if (init->fb_ctxdma_handle == NVE0_CHANNEL_IND_ENGINE_GR)
266 			init->tt_ctxdma_handle = 1;
267 	}
268 
269 	if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
270 		return nouveau_abi16_put(abi16, -EINVAL);
271 
272 	/* allocate "abi16 channel" data and make up a handle for it */
273 	init->channel = ffsll(~abi16->handles);
274 	if (!init->channel--)
275 		return nouveau_abi16_put(abi16, -ENOSPC);
276 
277 	chan = kzalloc(sizeof(*chan), GFP_KERNEL);
278 	if (!chan)
279 		return nouveau_abi16_put(abi16, -ENOMEM);
280 
281 	INIT_LIST_HEAD(&chan->notifiers);
282 	list_add(&chan->head, &abi16->channels);
283 	abi16->handles |= (1 << init->channel);
284 
285 	/* create channel object and initialise dma and fence management */
286 	ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN |
287 				  init->channel, init->fb_ctxdma_handle,
288 				  init->tt_ctxdma_handle, &chan->chan);
289 	if (ret)
290 		goto done;
291 
292 	if (device->card_type >= NV_50)
293 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
294 					NOUVEAU_GEM_DOMAIN_GART;
295 	else
296 	if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
297 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
298 	else
299 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
300 
301 	if (device->card_type < NV_10) {
302 		init->subchan[0].handle = 0x00000000;
303 		init->subchan[0].grclass = 0x0000;
304 		init->subchan[1].handle = NvSw;
305 		init->subchan[1].grclass = 0x506e;
306 		init->nr_subchan = 2;
307 	}
308 
309 	/* Named memory object area */
310 	ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
311 			      0, 0, &chan->ntfy);
312 	if (ret == 0)
313 		ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
314 	if (ret)
315 		goto done;
316 
317 	if (device->card_type >= NV_50) {
318 		ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
319 					&chan->ntfy_vma);
320 		if (ret)
321 			goto done;
322 	}
323 
324 	ret = drm_gem_handle_create(file_priv, &chan->ntfy->gem,
325 				    &init->notifier_handle);
326 	if (ret)
327 		goto done;
328 
329 	ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
330 done:
331 	if (ret)
332 		nouveau_abi16_chan_fini(abi16, chan);
333 	return nouveau_abi16_put(abi16, ret);
334 }
335 
336 
337 int
338 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
339 {
340 	struct drm_nouveau_channel_free *req = data;
341 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
342 	struct nouveau_abi16_chan *chan;
343 	int ret = -ENOENT;
344 
345 	if (unlikely(!abi16))
346 		return -ENOMEM;
347 
348 	list_for_each_entry(chan, &abi16->channels, head) {
349 		if (chan->chan->handle == (NVDRM_CHAN | req->channel)) {
350 			nouveau_abi16_chan_fini(abi16, chan);
351 			return nouveau_abi16_put(abi16, 0);
352 		}
353 	}
354 
355 	return nouveau_abi16_put(abi16, ret);
356 }
357 
358 int
359 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
360 {
361 	struct drm_nouveau_grobj_alloc *init = data;
362 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
363 	struct nouveau_drm *drm = nouveau_drm(dev);
364 	struct nouveau_object *object;
365 	int ret;
366 
367 	if (unlikely(!abi16))
368 		return -ENOMEM;
369 
370 	if (init->handle == ~0)
371 		return nouveau_abi16_put(abi16, -EINVAL);
372 
373 	/* compatibility with userspace that assumes 506e for all chipsets */
374 	if (init->class == 0x506e) {
375 		init->class = nouveau_abi16_swclass(drm);
376 		if (init->class == 0x906e)
377 			return nouveau_abi16_put(abi16, 0);
378 	}
379 
380 	ret = nouveau_object_new(abi16->client, NVDRM_CHAN | init->channel,
381 				  init->handle, init->class, NULL, 0, &object);
382 	return nouveau_abi16_put(abi16, ret);
383 }
384 
385 int
386 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
387 {
388 	struct drm_nouveau_notifierobj_alloc *info = data;
389 	struct nouveau_drm *drm = nouveau_drm(dev);
390 	struct nouveau_device *device = nv_device(drm->device);
391 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
392 	struct nouveau_abi16_chan *chan = NULL, *temp;
393 	struct nouveau_abi16_ntfy *ntfy;
394 	struct nouveau_object *object;
395 	struct nv_dma_class args = {};
396 	int ret;
397 
398 	if (unlikely(!abi16))
399 		return -ENOMEM;
400 
401 	/* completely unnecessary for these chipsets... */
402 	if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
403 		return nouveau_abi16_put(abi16, -EINVAL);
404 
405 	list_for_each_entry(temp, &abi16->channels, head) {
406 		if (temp->chan->handle == (NVDRM_CHAN | info->channel)) {
407 			chan = temp;
408 			break;
409 		}
410 	}
411 
412 	if (!chan)
413 		return nouveau_abi16_put(abi16, -ENOENT);
414 
415 	ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
416 	if (!ntfy)
417 		return nouveau_abi16_put(abi16, -ENOMEM);
418 
419 	list_add(&ntfy->head, &chan->notifiers);
420 	ntfy->handle = info->handle;
421 
422 	ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
423 			      &ntfy->node);
424 	if (ret)
425 		goto done;
426 
427 	args.start = ntfy->node->offset;
428 	args.limit = ntfy->node->offset + ntfy->node->length - 1;
429 	if (device->card_type >= NV_50) {
430 		args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM;
431 		args.start += chan->ntfy_vma.offset;
432 		args.limit += chan->ntfy_vma.offset;
433 	} else
434 	if (drm->agp.stat == ENABLED) {
435 		args.flags  = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR;
436 		args.start += drm->agp.base + chan->ntfy->bo.offset;
437 		args.limit += drm->agp.base + chan->ntfy->bo.offset;
438 	} else {
439 		args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR;
440 		args.start += chan->ntfy->bo.offset;
441 		args.limit += chan->ntfy->bo.offset;
442 	}
443 
444 	ret = nouveau_object_new(abi16->client, chan->chan->handle,
445 				 ntfy->handle, 0x003d, &args,
446 				 sizeof(args), &object);
447 	if (ret)
448 		goto done;
449 
450 done:
451 	if (ret)
452 		nouveau_abi16_ntfy_fini(chan, ntfy);
453 	return nouveau_abi16_put(abi16, ret);
454 }
455 
456 int
457 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
458 {
459 	struct drm_nouveau_gpuobj_free *fini = data;
460 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
461 	struct nouveau_abi16_chan *chan = NULL, *temp;
462 	struct nouveau_abi16_ntfy *ntfy;
463 	int ret;
464 
465 	if (unlikely(!abi16))
466 		return -ENOMEM;
467 
468 	list_for_each_entry(temp, &abi16->channels, head) {
469 		if (temp->chan->handle == (NVDRM_CHAN | fini->channel)) {
470 			chan = temp;
471 			break;
472 		}
473 	}
474 
475 	if (!chan)
476 		return nouveau_abi16_put(abi16, -ENOENT);
477 
478 	/* synchronize with the user channel and destroy the gpu object */
479 	nouveau_channel_idle(chan->chan);
480 
481 	ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
482 	if (ret)
483 		return nouveau_abi16_put(abi16, ret);
484 
485 	/* cleanup extra state if this object was a notifier */
486 	list_for_each_entry(ntfy, &chan->notifiers, head) {
487 		if (ntfy->handle == fini->handle) {
488 			nouveau_mm_free(&chan->heap, &ntfy->node);
489 			list_del(&ntfy->head);
490 			break;
491 		}
492 	}
493 
494 	return nouveau_abi16_put(abi16, 0);
495 }
496