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