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_20:
91 	case NV_30:
92 	case NV_40:
93 		return 0x016e;
94 	case NV_50:
95 		return 0x506e;
96 	case NV_C0:
97 	case NV_D0:
98 	case NV_E0:
99 		return 0x906e;
100 	}
101 
102 	return 0x0000;
103 }
104 
105 static void
106 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
107 			struct nouveau_abi16_ntfy *ntfy)
108 {
109 	nouveau_mm_free(&chan->heap, &ntfy->node);
110 	list_del(&ntfy->head);
111 	kfree(ntfy);
112 }
113 
114 static void
115 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
116 			struct nouveau_abi16_chan *chan)
117 {
118 	struct nouveau_abi16_ntfy *ntfy, *temp;
119 
120 	/* wait for all activity to stop before releasing notify object, which
121 	 * may be still in use */
122 	if (chan->chan && chan->ntfy)
123 		nouveau_channel_idle(chan->chan);
124 
125 	/* cleanup notifier state */
126 	list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
127 		nouveau_abi16_ntfy_fini(chan, ntfy);
128 	}
129 
130 	if (chan->ntfy) {
131 		nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
132 		drm_gem_object_unreference_unlocked(chan->ntfy->gem);
133 	}
134 
135 	if (chan->heap.block_size)
136 		nouveau_mm_fini(&chan->heap);
137 
138 	/* destroy channel object, all children will be killed too */
139 	if (chan->chan) {
140 		abi16->handles &= ~(1 << (chan->chan->handle & 0xffff));
141 		nouveau_channel_del(&chan->chan);
142 	}
143 
144 	list_del(&chan->head);
145 	kfree(chan);
146 }
147 
148 void
149 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
150 {
151 	struct nouveau_cli *cli = (void *)abi16->client;
152 	struct nouveau_abi16_chan *chan, *temp;
153 
154 	/* cleanup channels */
155 	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
156 		nouveau_abi16_chan_fini(abi16, chan);
157 	}
158 
159 	/* destroy the device object */
160 	nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);
161 
162 	kfree(cli->abi16);
163 	cli->abi16 = NULL;
164 }
165 
166 int
167 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
168 {
169 	struct nouveau_drm *drm = nouveau_drm(dev);
170 	struct nouveau_device *device = nv_device(drm->device);
171 	struct nouveau_timer *ptimer = nouveau_timer(device);
172 	struct nouveau_graph *graph = (void *)nouveau_engine(device, NVDEV_ENGINE_GR);
173 	struct drm_nouveau_getparam *getparam = data;
174 
175 	switch (getparam->param) {
176 	case NOUVEAU_GETPARAM_CHIPSET_ID:
177 		getparam->value = device->chipset;
178 		break;
179 	case NOUVEAU_GETPARAM_PCI_VENDOR:
180 		getparam->value = dev->pci_vendor;
181 		break;
182 	case NOUVEAU_GETPARAM_PCI_DEVICE:
183 		getparam->value = dev->pci_device;
184 		break;
185 	case NOUVEAU_GETPARAM_BUS_TYPE:
186 		if (drm_pci_device_is_agp(dev))
187 			getparam->value = 0;
188 		else
189 		if (!pci_is_pcie(dev->pdev))
190 			getparam->value = 1;
191 		else
192 			getparam->value = 2;
193 		break;
194 	case NOUVEAU_GETPARAM_FB_SIZE:
195 		getparam->value = drm->gem.vram_available;
196 		break;
197 	case NOUVEAU_GETPARAM_AGP_SIZE:
198 		getparam->value = drm->gem.gart_available;
199 		break;
200 	case NOUVEAU_GETPARAM_VM_VRAM_BASE:
201 		getparam->value = 0; /* deprecated */
202 		break;
203 	case NOUVEAU_GETPARAM_PTIMER_TIME:
204 		getparam->value = ptimer->read(ptimer);
205 		break;
206 	case NOUVEAU_GETPARAM_HAS_BO_USAGE:
207 		getparam->value = 1;
208 		break;
209 	case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
210 		getparam->value = 1;
211 		break;
212 	case NOUVEAU_GETPARAM_GRAPH_UNITS:
213 		getparam->value = graph->units ? graph->units(graph) : 0;
214 		break;
215 	default:
216 		nv_debug(device, "unknown parameter %lld\n", getparam->param);
217 		return -EINVAL;
218 	}
219 
220 	return 0;
221 }
222 
223 int
224 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
225 {
226 	return -EINVAL;
227 }
228 
229 int
230 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
231 {
232 	struct drm_nouveau_channel_alloc *init = data;
233 	struct nouveau_cli *cli = nouveau_cli(file_priv);
234 	struct nouveau_drm *drm = nouveau_drm(dev);
235 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
236 	struct nouveau_abi16_chan *chan;
237 	struct nouveau_client *client;
238 	struct nouveau_device *device;
239 	struct nouveau_instmem *imem;
240 	struct nouveau_fb *pfb;
241 	int ret;
242 
243 	if (unlikely(!abi16))
244 		return -ENOMEM;
245 
246 	if (!drm->channel)
247 		return nouveau_abi16_put(abi16, -ENODEV);
248 
249 	client = nv_client(abi16->client);
250 	device = nv_device(abi16->device);
251 	imem   = nouveau_instmem(device);
252 	pfb    = nouveau_fb(device);
253 
254 	/* hack to allow channel engine type specification on kepler */
255 	if (device->card_type >= NV_E0) {
256 		if (init->fb_ctxdma_handle != ~0)
257 			init->fb_ctxdma_handle = NVE0_CHANNEL_IND_ENGINE_GR;
258 		else
259 			init->fb_ctxdma_handle = init->tt_ctxdma_handle;
260 
261 		/* allow flips to be executed if this is a graphics channel */
262 		init->tt_ctxdma_handle = 0;
263 		if (init->fb_ctxdma_handle == NVE0_CHANNEL_IND_ENGINE_GR)
264 			init->tt_ctxdma_handle = 1;
265 	}
266 
267 	if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
268 		return nouveau_abi16_put(abi16, -EINVAL);
269 
270 	/* allocate "abi16 channel" data and make up a handle for it */
271 	init->channel = ffsll(~abi16->handles);
272 	if (!init->channel--)
273 		return nouveau_abi16_put(abi16, -ENOSPC);
274 
275 	chan = kzalloc(sizeof(*chan), GFP_KERNEL);
276 	if (!chan)
277 		return nouveau_abi16_put(abi16, -ENOMEM);
278 
279 	INIT_LIST_HEAD(&chan->notifiers);
280 	list_add(&chan->head, &abi16->channels);
281 	abi16->handles |= (1 << init->channel);
282 
283 	/* create channel object and initialise dma and fence management */
284 	ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN |
285 				  init->channel, init->fb_ctxdma_handle,
286 				  init->tt_ctxdma_handle, &chan->chan);
287 	if (ret)
288 		goto done;
289 
290 	if (device->card_type >= NV_50)
291 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
292 					NOUVEAU_GEM_DOMAIN_GART;
293 	else
294 	if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
295 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
296 	else
297 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
298 
299 	if (device->card_type < NV_C0) {
300 		init->subchan[0].handle = 0x00000000;
301 		init->subchan[0].grclass = 0x0000;
302 		init->subchan[1].handle = NvSw;
303 		init->subchan[1].grclass = 0x506e;
304 		init->nr_subchan = 2;
305 	}
306 
307 	/* Named memory object area */
308 	ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
309 			      0, 0, &chan->ntfy);
310 	if (ret == 0)
311 		ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
312 	if (ret)
313 		goto done;
314 
315 	if (device->card_type >= NV_50) {
316 		ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
317 					&chan->ntfy_vma);
318 		if (ret)
319 			goto done;
320 	}
321 
322 	ret = drm_gem_handle_create(file_priv, chan->ntfy->gem,
323 				    &init->notifier_handle);
324 	if (ret)
325 		goto done;
326 
327 	ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
328 done:
329 	if (ret)
330 		nouveau_abi16_chan_fini(abi16, chan);
331 	return nouveau_abi16_put(abi16, ret);
332 }
333 
334 
335 int
336 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
337 {
338 	struct drm_nouveau_channel_free *req = data;
339 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
340 	struct nouveau_abi16_chan *chan;
341 	int ret = -ENOENT;
342 
343 	if (unlikely(!abi16))
344 		return -ENOMEM;
345 
346 	list_for_each_entry(chan, &abi16->channels, head) {
347 		if (chan->chan->handle == (NVDRM_CHAN | req->channel)) {
348 			nouveau_abi16_chan_fini(abi16, chan);
349 			return nouveau_abi16_put(abi16, 0);
350 		}
351 	}
352 
353 	return nouveau_abi16_put(abi16, ret);
354 }
355 
356 int
357 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
358 {
359 	struct drm_nouveau_grobj_alloc *init = data;
360 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
361 	struct nouveau_drm *drm = nouveau_drm(dev);
362 	struct nouveau_object *object;
363 	int ret;
364 
365 	if (unlikely(!abi16))
366 		return -ENOMEM;
367 
368 	if (init->handle == ~0)
369 		return nouveau_abi16_put(abi16, -EINVAL);
370 
371 	/* compatibility with userspace that assumes 506e for all chipsets */
372 	if (init->class == 0x506e) {
373 		init->class = nouveau_abi16_swclass(drm);
374 		if (init->class == 0x906e)
375 			return nouveau_abi16_put(abi16, 0);
376 	}
377 
378 	ret = nouveau_object_new(abi16->client, NVDRM_CHAN | init->channel,
379 				  init->handle, init->class, NULL, 0, &object);
380 	return nouveau_abi16_put(abi16, ret);
381 }
382 
383 int
384 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
385 {
386 	struct drm_nouveau_notifierobj_alloc *info = data;
387 	struct nouveau_drm *drm = nouveau_drm(dev);
388 	struct nouveau_device *device = nv_device(drm->device);
389 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
390 	struct nouveau_abi16_chan *chan = NULL, *temp;
391 	struct nouveau_abi16_ntfy *ntfy;
392 	struct nouveau_object *object;
393 	struct nv_dma_class args = {};
394 	int ret;
395 
396 	if (unlikely(!abi16))
397 		return -ENOMEM;
398 
399 	/* completely unnecessary for these chipsets... */
400 	if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
401 		return nouveau_abi16_put(abi16, -EINVAL);
402 
403 	list_for_each_entry(temp, &abi16->channels, head) {
404 		if (temp->chan->handle == (NVDRM_CHAN | info->channel)) {
405 			chan = temp;
406 			break;
407 		}
408 	}
409 
410 	if (!chan)
411 		return nouveau_abi16_put(abi16, -ENOENT);
412 
413 	ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
414 	if (!ntfy)
415 		return nouveau_abi16_put(abi16, -ENOMEM);
416 
417 	list_add(&ntfy->head, &chan->notifiers);
418 	ntfy->handle = info->handle;
419 
420 	ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
421 			      &ntfy->node);
422 	if (ret)
423 		goto done;
424 
425 	args.start = ntfy->node->offset;
426 	args.limit = ntfy->node->offset + ntfy->node->length - 1;
427 	if (device->card_type >= NV_50) {
428 		args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM;
429 		args.start += chan->ntfy_vma.offset;
430 		args.limit += chan->ntfy_vma.offset;
431 	} else
432 	if (drm->agp.stat == ENABLED) {
433 		args.flags  = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR;
434 		args.start += drm->agp.base + chan->ntfy->bo.offset;
435 		args.limit += drm->agp.base + chan->ntfy->bo.offset;
436 	} else {
437 		args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR;
438 		args.start += chan->ntfy->bo.offset;
439 		args.limit += chan->ntfy->bo.offset;
440 	}
441 
442 	ret = nouveau_object_new(abi16->client, chan->chan->handle,
443 				 ntfy->handle, 0x003d, &args,
444 				 sizeof(args), &object);
445 	if (ret)
446 		goto done;
447 
448 done:
449 	if (ret)
450 		nouveau_abi16_ntfy_fini(chan, ntfy);
451 	return nouveau_abi16_put(abi16, ret);
452 }
453 
454 int
455 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
456 {
457 	struct drm_nouveau_gpuobj_free *fini = data;
458 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
459 	struct nouveau_abi16_chan *chan = NULL, *temp;
460 	struct nouveau_abi16_ntfy *ntfy;
461 	int ret;
462 
463 	if (unlikely(!abi16))
464 		return -ENOMEM;
465 
466 	list_for_each_entry(temp, &abi16->channels, head) {
467 		if (temp->chan->handle == (NVDRM_CHAN | fini->channel)) {
468 			chan = temp;
469 			break;
470 		}
471 	}
472 
473 	if (!chan)
474 		return nouveau_abi16_put(abi16, -ENOENT);
475 
476 	/* synchronize with the user channel and destroy the gpu object */
477 	nouveau_channel_idle(chan->chan);
478 
479 	ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
480 	if (ret)
481 		return nouveau_abi16_put(abi16, ret);
482 
483 	/* cleanup extra state if this object was a notifier */
484 	list_for_each_entry(ntfy, &chan->notifiers, head) {
485 		if (ntfy->handle == fini->handle) {
486 			nouveau_mm_free(&chan->heap, &ntfy->node);
487 			list_del(&ntfy->head);
488 			break;
489 		}
490 	}
491 
492 	return nouveau_abi16_put(abi16, 0);
493 }
494