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 
34 #include "nouveau_drm.h"
35 #include "nouveau_dma.h"
36 #include "nouveau_gem.h"
37 #include "nouveau_chan.h"
38 #include "nouveau_abi16.h"
39 
40 struct nouveau_abi16 *
41 nouveau_abi16_get(struct drm_file *file_priv, struct drm_device *dev)
42 {
43 	struct nouveau_cli *cli = nouveau_cli(file_priv);
44 	mutex_lock(&cli->mutex);
45 	if (!cli->abi16) {
46 		struct nouveau_abi16 *abi16;
47 		cli->abi16 = abi16 = kzalloc(sizeof(*abi16), GFP_KERNEL);
48 		if (cli->abi16) {
49 			INIT_LIST_HEAD(&abi16->channels);
50 			abi16->client = nv_object(cli);
51 
52 			/* allocate device object targeting client's default
53 			 * device (ie. the one that belongs to the fd it
54 			 * opened)
55 			 */
56 			if (nouveau_object_new(abi16->client, NVDRM_CLIENT,
57 					       NVDRM_DEVICE, 0x0080,
58 					       &(struct nv_device_class) {
59 						.device = ~0ULL,
60 					       },
61 					       sizeof(struct nv_device_class),
62 					       &abi16->device) == 0)
63 				return cli->abi16;
64 
65 			kfree(cli->abi16);
66 			cli->abi16 = NULL;
67 		}
68 
69 		mutex_unlock(&cli->mutex);
70 	}
71 	return cli->abi16;
72 }
73 
74 int
75 nouveau_abi16_put(struct nouveau_abi16 *abi16, int ret)
76 {
77 	struct nouveau_cli *cli = (void *)abi16->client;
78 	mutex_unlock(&cli->mutex);
79 	return ret;
80 }
81 
82 u16
83 nouveau_abi16_swclass(struct nouveau_drm *drm)
84 {
85 	switch (nv_device(drm->device)->card_type) {
86 	case NV_04:
87 		return 0x006e;
88 	case NV_10:
89 	case NV_20:
90 	case NV_30:
91 	case NV_40:
92 		return 0x016e;
93 	case NV_50:
94 		return 0x506e;
95 	case NV_C0:
96 	case NV_D0:
97 	case NV_E0:
98 		return 0x906e;
99 	}
100 
101 	return 0x0000;
102 }
103 
104 static void
105 nouveau_abi16_ntfy_fini(struct nouveau_abi16_chan *chan,
106 			struct nouveau_abi16_ntfy *ntfy)
107 {
108 	nouveau_mm_free(&chan->heap, &ntfy->node);
109 	list_del(&ntfy->head);
110 	kfree(ntfy);
111 }
112 
113 static void
114 nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16,
115 			struct nouveau_abi16_chan *chan)
116 {
117 	struct nouveau_abi16_ntfy *ntfy, *temp;
118 
119 	/* cleanup notifier state */
120 	list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) {
121 		nouveau_abi16_ntfy_fini(chan, ntfy);
122 	}
123 
124 	if (chan->ntfy) {
125 		nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma);
126 		drm_gem_object_unreference_unlocked(chan->ntfy->gem);
127 	}
128 
129 	if (chan->heap.block_size)
130 		nouveau_mm_fini(&chan->heap);
131 
132 	/* destroy channel object, all children will be killed too */
133 	if (chan->chan) {
134 		abi16->handles &= ~(1 << (chan->chan->handle & 0xffff));
135 		nouveau_channel_del(&chan->chan);
136 	}
137 
138 	list_del(&chan->head);
139 	kfree(chan);
140 }
141 
142 void
143 nouveau_abi16_fini(struct nouveau_abi16 *abi16)
144 {
145 	struct nouveau_cli *cli = (void *)abi16->client;
146 	struct nouveau_abi16_chan *chan, *temp;
147 
148 	/* cleanup channels */
149 	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
150 		nouveau_abi16_chan_fini(abi16, chan);
151 	}
152 
153 	/* destroy the device object */
154 	nouveau_object_del(abi16->client, NVDRM_CLIENT, NVDRM_DEVICE);
155 
156 	kfree(cli->abi16);
157 	cli->abi16 = NULL;
158 }
159 
160 int
161 nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
162 {
163 	struct nouveau_drm *drm = nouveau_drm(dev);
164 	struct nouveau_device *device = nv_device(drm->device);
165 	struct nouveau_timer *ptimer = nouveau_timer(device);
166 	struct drm_nouveau_getparam *getparam = data;
167 
168 	switch (getparam->param) {
169 	case NOUVEAU_GETPARAM_CHIPSET_ID:
170 		getparam->value = device->chipset;
171 		break;
172 	case NOUVEAU_GETPARAM_PCI_VENDOR:
173 		getparam->value = dev->pci_vendor;
174 		break;
175 	case NOUVEAU_GETPARAM_PCI_DEVICE:
176 		getparam->value = dev->pci_device;
177 		break;
178 	case NOUVEAU_GETPARAM_BUS_TYPE:
179 		if (drm_pci_device_is_agp(dev))
180 			getparam->value = 0;
181 		else
182 		if (!pci_is_pcie(dev->pdev))
183 			getparam->value = 1;
184 		else
185 			getparam->value = 2;
186 		break;
187 	case NOUVEAU_GETPARAM_FB_SIZE:
188 		getparam->value = drm->gem.vram_available;
189 		break;
190 	case NOUVEAU_GETPARAM_AGP_SIZE:
191 		getparam->value = drm->gem.gart_available;
192 		break;
193 	case NOUVEAU_GETPARAM_VM_VRAM_BASE:
194 		getparam->value = 0; /* deprecated */
195 		break;
196 	case NOUVEAU_GETPARAM_PTIMER_TIME:
197 		getparam->value = ptimer->read(ptimer);
198 		break;
199 	case NOUVEAU_GETPARAM_HAS_BO_USAGE:
200 		getparam->value = 1;
201 		break;
202 	case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
203 		getparam->value = 1;
204 		break;
205 	case NOUVEAU_GETPARAM_GRAPH_UNITS:
206 		/* NV40 and NV50 versions are quite different, but register
207 		 * address is the same. User is supposed to know the card
208 		 * family anyway... */
209 		if (device->chipset >= 0x40) {
210 			getparam->value = nv_rd32(device, 0x001540);
211 			break;
212 		}
213 		/* FALLTHRU */
214 	default:
215 		nv_debug(device, "unknown parameter %lld\n", getparam->param);
216 		return -EINVAL;
217 	}
218 
219 	return 0;
220 }
221 
222 int
223 nouveau_abi16_ioctl_setparam(ABI16_IOCTL_ARGS)
224 {
225 	return -EINVAL;
226 }
227 
228 int
229 nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
230 {
231 	struct drm_nouveau_channel_alloc *init = data;
232 	struct nouveau_cli *cli = nouveau_cli(file_priv);
233 	struct nouveau_drm *drm = nouveau_drm(dev);
234 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
235 	struct nouveau_abi16_chan *chan;
236 	struct nouveau_client *client;
237 	struct nouveau_device *device;
238 	struct nouveau_instmem *imem;
239 	struct nouveau_fb *pfb;
240 	int ret;
241 
242 	if (unlikely(!abi16))
243 		return -ENOMEM;
244 
245 	if (!drm->channel)
246 		return nouveau_abi16_put(abi16, -ENODEV);
247 
248 	client = nv_client(abi16->client);
249 	device = nv_device(abi16->device);
250 	imem   = nouveau_instmem(device);
251 	pfb    = nouveau_fb(device);
252 
253 	/* hack to allow channel engine type specification on kepler */
254 	if (device->card_type >= NV_E0) {
255 		if (init->fb_ctxdma_handle != ~0)
256 			init->fb_ctxdma_handle = NVE0_CHANNEL_IND_ENGINE_GR;
257 		else
258 			init->fb_ctxdma_handle = init->tt_ctxdma_handle;
259 
260 		/* allow flips to be executed if this is a graphics channel */
261 		init->tt_ctxdma_handle = 0;
262 		if (init->fb_ctxdma_handle == NVE0_CHANNEL_IND_ENGINE_GR)
263 			init->tt_ctxdma_handle = 1;
264 	}
265 
266 	if (init->fb_ctxdma_handle == ~0 || init->tt_ctxdma_handle == ~0)
267 		return nouveau_abi16_put(abi16, -EINVAL);
268 
269 	/* allocate "abi16 channel" data and make up a handle for it */
270 	init->channel = ffsll(~abi16->handles);
271 	if (!init->channel--)
272 		return nouveau_abi16_put(abi16, -ENOSPC);
273 
274 	chan = kzalloc(sizeof(*chan), GFP_KERNEL);
275 	if (!chan)
276 		return nouveau_abi16_put(abi16, -ENOMEM);
277 
278 	INIT_LIST_HEAD(&chan->notifiers);
279 	list_add(&chan->head, &abi16->channels);
280 	abi16->handles |= (1 << init->channel);
281 
282 	/* create channel object and initialise dma and fence management */
283 	ret = nouveau_channel_new(drm, cli, NVDRM_DEVICE, NVDRM_CHAN |
284 				  init->channel, init->fb_ctxdma_handle,
285 				  init->tt_ctxdma_handle, &chan->chan);
286 	if (ret)
287 		goto done;
288 
289 	if (device->card_type >= NV_50)
290 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM |
291 					NOUVEAU_GEM_DOMAIN_GART;
292 	else
293 	if (chan->chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM)
294 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_VRAM;
295 	else
296 		init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
297 
298 	if (device->card_type < NV_C0) {
299 		init->subchan[0].handle = 0x00000000;
300 		init->subchan[0].grclass = 0x0000;
301 		init->subchan[1].handle = NvSw;
302 		init->subchan[1].grclass = 0x506e;
303 		init->nr_subchan = 2;
304 	}
305 
306 	/* Named memory object area */
307 	ret = nouveau_gem_new(dev, PAGE_SIZE, 0, NOUVEAU_GEM_DOMAIN_GART,
308 			      0, 0, &chan->ntfy);
309 	if (ret == 0)
310 		ret = nouveau_bo_pin(chan->ntfy, TTM_PL_FLAG_TT);
311 	if (ret)
312 		goto done;
313 
314 	if (device->card_type >= NV_50) {
315 		ret = nouveau_bo_vma_add(chan->ntfy, client->vm,
316 					&chan->ntfy_vma);
317 		if (ret)
318 			goto done;
319 	}
320 
321 	ret = drm_gem_handle_create(file_priv, chan->ntfy->gem,
322 				    &init->notifier_handle);
323 	if (ret)
324 		goto done;
325 
326 	ret = nouveau_mm_init(&chan->heap, 0, PAGE_SIZE, 1);
327 done:
328 	if (ret)
329 		nouveau_abi16_chan_fini(abi16, chan);
330 	return nouveau_abi16_put(abi16, ret);
331 }
332 
333 
334 int
335 nouveau_abi16_ioctl_channel_free(ABI16_IOCTL_ARGS)
336 {
337 	struct drm_nouveau_channel_free *req = data;
338 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
339 	struct nouveau_abi16_chan *chan;
340 	int ret = -ENOENT;
341 
342 	if (unlikely(!abi16))
343 		return -ENOMEM;
344 
345 	list_for_each_entry(chan, &abi16->channels, head) {
346 		if (chan->chan->handle == (NVDRM_CHAN | req->channel)) {
347 			nouveau_abi16_chan_fini(abi16, chan);
348 			return nouveau_abi16_put(abi16, 0);
349 		}
350 	}
351 
352 	return nouveau_abi16_put(abi16, ret);
353 }
354 
355 int
356 nouveau_abi16_ioctl_grobj_alloc(ABI16_IOCTL_ARGS)
357 {
358 	struct drm_nouveau_grobj_alloc *init = data;
359 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
360 	struct nouveau_drm *drm = nouveau_drm(dev);
361 	struct nouveau_object *object;
362 	int ret;
363 
364 	if (unlikely(!abi16))
365 		return -ENOMEM;
366 
367 	if (init->handle == ~0)
368 		return nouveau_abi16_put(abi16, -EINVAL);
369 
370 	/* compatibility with userspace that assumes 506e for all chipsets */
371 	if (init->class == 0x506e) {
372 		init->class = nouveau_abi16_swclass(drm);
373 		if (init->class == 0x906e)
374 			return nouveau_abi16_put(abi16, 0);
375 	}
376 
377 	ret = nouveau_object_new(abi16->client, NVDRM_CHAN | init->channel,
378 				  init->handle, init->class, NULL, 0, &object);
379 	return nouveau_abi16_put(abi16, ret);
380 }
381 
382 int
383 nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS)
384 {
385 	struct drm_nouveau_notifierobj_alloc *info = data;
386 	struct nouveau_drm *drm = nouveau_drm(dev);
387 	struct nouveau_device *device = nv_device(drm->device);
388 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
389 	struct nouveau_abi16_chan *chan, *temp;
390 	struct nouveau_abi16_ntfy *ntfy;
391 	struct nouveau_object *object;
392 	struct nv_dma_class args = {};
393 	int ret;
394 
395 	if (unlikely(!abi16))
396 		return -ENOMEM;
397 
398 	/* completely unnecessary for these chipsets... */
399 	if (unlikely(nv_device(abi16->device)->card_type >= NV_C0))
400 		return nouveau_abi16_put(abi16, -EINVAL);
401 
402 	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
403 		if (chan->chan->handle == (NVDRM_CHAN | info->channel))
404 			break;
405 		chan = NULL;
406 	}
407 
408 	if (!chan)
409 		return nouveau_abi16_put(abi16, -ENOENT);
410 
411 	ntfy = kzalloc(sizeof(*ntfy), GFP_KERNEL);
412 	if (!ntfy)
413 		return nouveau_abi16_put(abi16, -ENOMEM);
414 
415 	list_add(&ntfy->head, &chan->notifiers);
416 	ntfy->handle = info->handle;
417 
418 	ret = nouveau_mm_head(&chan->heap, 1, info->size, info->size, 1,
419 			      &ntfy->node);
420 	if (ret)
421 		goto done;
422 
423 	args.start = ntfy->node->offset;
424 	args.limit = ntfy->node->offset + ntfy->node->length - 1;
425 	if (device->card_type >= NV_50) {
426 		args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM;
427 		args.start += chan->ntfy_vma.offset;
428 		args.limit += chan->ntfy_vma.offset;
429 	} else
430 	if (drm->agp.stat == ENABLED) {
431 		args.flags  = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR;
432 		args.start += drm->agp.base + chan->ntfy->bo.offset;
433 		args.limit += drm->agp.base + chan->ntfy->bo.offset;
434 	} else {
435 		args.flags  = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR;
436 		args.start += chan->ntfy->bo.offset;
437 		args.limit += chan->ntfy->bo.offset;
438 	}
439 
440 	ret = nouveau_object_new(abi16->client, chan->chan->handle,
441 				 ntfy->handle, 0x003d, &args,
442 				 sizeof(args), &object);
443 	if (ret)
444 		goto done;
445 
446 done:
447 	if (ret)
448 		nouveau_abi16_ntfy_fini(chan, ntfy);
449 	return nouveau_abi16_put(abi16, ret);
450 }
451 
452 int
453 nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS)
454 {
455 	struct drm_nouveau_gpuobj_free *fini = data;
456 	struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev);
457 	struct nouveau_abi16_chan *chan, *temp;
458 	struct nouveau_abi16_ntfy *ntfy;
459 	int ret;
460 
461 	if (unlikely(!abi16))
462 		return -ENOMEM;
463 
464 	list_for_each_entry_safe(chan, temp, &abi16->channels, head) {
465 		if (chan->chan->handle == (NVDRM_CHAN | fini->channel))
466 			break;
467 		chan = NULL;
468 	}
469 
470 	if (!chan)
471 		return nouveau_abi16_put(abi16, -ENOENT);
472 
473 	/* synchronize with the user channel and destroy the gpu object */
474 	nouveau_channel_idle(chan->chan);
475 
476 	ret = nouveau_object_del(abi16->client, chan->chan->handle, fini->handle);
477 	if (ret)
478 		return nouveau_abi16_put(abi16, ret);
479 
480 	/* cleanup extra state if this object was a notifier */
481 	list_for_each_entry(ntfy, &chan->notifiers, head) {
482 		if (ntfy->handle == fini->handle) {
483 			nouveau_mm_free(&chan->heap, &ntfy->node);
484 			list_del(&ntfy->head);
485 			break;
486 		}
487 	}
488 
489 	return nouveau_abi16_put(abi16, 0);
490 }
491