i915_dma.c 42.2 KB
Newer Older
L
Linus Torvalds 已提交
1 2
/* i915_dma.c -- DMA support for the I915 -*- linux-c -*-
 */
D
Dave Airlie 已提交
3
/*
L
Linus Torvalds 已提交
4 5
 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
D
Dave Airlie 已提交
27
 */
L
Linus Torvalds 已提交
28 29 30

#include "drmP.h"
#include "drm.h"
J
Jesse Barnes 已提交
31
#include "drm_crtc_helper.h"
32
#include "drm_fb_helper.h"
J
Jesse Barnes 已提交
33
#include "intel_drv.h"
L
Linus Torvalds 已提交
34 35 36 37 38 39 40 41
#include "i915_drm.h"
#include "i915_drv.h"

/* Really want an OS-independent resettable timer.  Would like to have
 * this loop run for (eg) 3 sec, but have the timer reset every time
 * the head pointer changes, so that EBUSY only happens if the ring
 * actually stalls for (eg) 3 seconds.
 */
42
int i915_wait_ring(struct drm_device * dev, int n, const char *caller)
L
Linus Torvalds 已提交
43 44 45
{
	drm_i915_private_t *dev_priv = dev->dev_private;
	drm_i915_ring_buffer_t *ring = &(dev_priv->ring);
46 47 48
	u32 acthd_reg = IS_I965G(dev) ? ACTHD_I965 : ACTHD;
	u32 last_acthd = I915_READ(acthd_reg);
	u32 acthd;
49
	u32 last_head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
L
Linus Torvalds 已提交
50 51
	int i;

52
	for (i = 0; i < 100000; i++) {
53
		ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
54
		acthd = I915_READ(acthd_reg);
L
Linus Torvalds 已提交
55 56 57 58 59 60
		ring->space = ring->head - (ring->tail + 8);
		if (ring->space < 0)
			ring->space += ring->Size;
		if (ring->space >= n)
			return 0;

61 62 63 64 65 66
		if (dev->primary->master) {
			struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
			if (master_priv->sarea_priv)
				master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT;
		}

L
Linus Torvalds 已提交
67 68 69

		if (ring->head != last_head)
			i = 0;
70 71
		if (acthd != last_acthd)
			i = 0;
L
Linus Torvalds 已提交
72 73

		last_head = ring->head;
74 75 76
		last_acthd = acthd;
		msleep_interruptible(10);

L
Linus Torvalds 已提交
77 78
	}

E
Eric Anholt 已提交
79
	return -EBUSY;
L
Linus Torvalds 已提交
80 81
}

82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109
/* As a ringbuffer is only allowed to wrap between instructions, fill
 * the tail with NOOPs.
 */
int i915_wrap_ring(struct drm_device *dev)
{
	drm_i915_private_t *dev_priv = dev->dev_private;
	volatile unsigned int *virt;
	int rem;

	rem = dev_priv->ring.Size - dev_priv->ring.tail;
	if (dev_priv->ring.space < rem) {
		int ret = i915_wait_ring(dev, rem, __func__);
		if (ret)
			return ret;
	}
	dev_priv->ring.space -= rem;

	virt = (unsigned int *)
		(dev_priv->ring.virtual_start + dev_priv->ring.tail);
	rem /= 4;
	while (rem--)
		*virt++ = MI_NOOP;

	dev_priv->ring.tail = 0;

	return 0;
}

110 111 112 113
/**
 * Sets up the hardware status page for devices that need a physical address
 * in the register.
 */
114
static int i915_init_phys_hws(struct drm_device *dev)
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
{
	drm_i915_private_t *dev_priv = dev->dev_private;
	/* Program Hardware Status Page */
	dev_priv->status_page_dmah =
		drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE, 0xffffffff);

	if (!dev_priv->status_page_dmah) {
		DRM_ERROR("Can not allocate hardware status page\n");
		return -ENOMEM;
	}
	dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
	dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;

	memset(dev_priv->hw_status_page, 0, PAGE_SIZE);

	I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
131
	DRM_DEBUG_DRIVER("Enabled hardware status page\n");
132 133 134 135 136 137 138
	return 0;
}

/**
 * Frees the hardware status page, whether it's a physical address or a virtual
 * address set up by the X Server.
 */
139
static void i915_free_hws(struct drm_device *dev)
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
{
	drm_i915_private_t *dev_priv = dev->dev_private;
	if (dev_priv->status_page_dmah) {
		drm_pci_free(dev, dev_priv->status_page_dmah);
		dev_priv->status_page_dmah = NULL;
	}

	if (dev_priv->status_gfx_addr) {
		dev_priv->status_gfx_addr = 0;
		drm_core_ioremapfree(&dev_priv->hws_map, dev);
	}

	/* Need to rewrite hardware status page */
	I915_WRITE(HWS_PGA, 0x1ffff000);
}

156
void i915_kernel_lost_context(struct drm_device * dev)
L
Linus Torvalds 已提交
157 158
{
	drm_i915_private_t *dev_priv = dev->dev_private;
159
	struct drm_i915_master_private *master_priv;
L
Linus Torvalds 已提交
160 161
	drm_i915_ring_buffer_t *ring = &(dev_priv->ring);

J
Jesse Barnes 已提交
162 163 164 165 166 167 168
	/*
	 * We should never lose context on the ring with modesetting
	 * as we don't expose it to userspace
	 */
	if (drm_core_check_feature(dev, DRIVER_MODESET))
		return;

169 170
	ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
	ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
L
Linus Torvalds 已提交
171 172 173 174
	ring->space = ring->head - (ring->tail + 8);
	if (ring->space < 0)
		ring->space += ring->Size;

175 176 177 178 179 180
	if (!dev->primary->master)
		return;

	master_priv = dev->primary->master->driver_priv;
	if (ring->head == ring->tail && master_priv->sarea_priv)
		master_priv->sarea_priv->perf_boxes |= I915_BOX_RING_EMPTY;
L
Linus Torvalds 已提交
181 182
}

183
static int i915_dma_cleanup(struct drm_device * dev)
L
Linus Torvalds 已提交
184
{
J
Jesse Barnes 已提交
185
	drm_i915_private_t *dev_priv = dev->dev_private;
L
Linus Torvalds 已提交
186 187 188 189
	/* Make sure interrupts are disabled here because the uninstall ioctl
	 * may not have been called from userspace and after dev_private
	 * is freed, it's too late.
	 */
190
	if (dev->irq_enabled)
D
Dave Airlie 已提交
191
		drm_irq_uninstall(dev);
L
Linus Torvalds 已提交
192

J
Jesse Barnes 已提交
193 194
	if (dev_priv->ring.virtual_start) {
		drm_core_ioremapfree(&dev_priv->ring.map, dev);
195 196
		dev_priv->ring.virtual_start = NULL;
		dev_priv->ring.map.handle = NULL;
J
Jesse Barnes 已提交
197 198
		dev_priv->ring.map.size = 0;
	}
199

200 201 202
	/* Clear the HWS virtual address at teardown */
	if (I915_NEED_GFX_HWS(dev))
		i915_free_hws(dev);
L
Linus Torvalds 已提交
203 204 205 206

	return 0;
}

J
Jesse Barnes 已提交
207
static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
L
Linus Torvalds 已提交
208
{
J
Jesse Barnes 已提交
209
	drm_i915_private_t *dev_priv = dev->dev_private;
210
	struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
L
Linus Torvalds 已提交
211

212 213 214 215 216
	master_priv->sarea = drm_getsarea(dev);
	if (master_priv->sarea) {
		master_priv->sarea_priv = (drm_i915_sarea_t *)
			((u8 *)master_priv->sarea->handle + init->sarea_priv_offset);
	} else {
217
		DRM_DEBUG_DRIVER("sarea not found assuming DRI2 userspace\n");
218 219
	}

220 221 222 223 224 225 226
	if (init->ring_size != 0) {
		if (dev_priv->ring.ring_obj != NULL) {
			i915_dma_cleanup(dev);
			DRM_ERROR("Client tried to initialize ringbuffer in "
				  "GEM mode\n");
			return -EINVAL;
		}
L
Linus Torvalds 已提交
227

228
		dev_priv->ring.Size = init->ring_size;
L
Linus Torvalds 已提交
229

230 231 232 233 234
		dev_priv->ring.map.offset = init->ring_start;
		dev_priv->ring.map.size = init->ring_size;
		dev_priv->ring.map.type = 0;
		dev_priv->ring.map.flags = 0;
		dev_priv->ring.map.mtrr = 0;
L
Linus Torvalds 已提交
235

236
		drm_core_ioremap_wc(&dev_priv->ring.map, dev);
237 238 239 240 241 242 243

		if (dev_priv->ring.map.handle == NULL) {
			i915_dma_cleanup(dev);
			DRM_ERROR("can not ioremap virtual address for"
				  " ring buffer\n");
			return -ENOMEM;
		}
L
Linus Torvalds 已提交
244 245 246 247
	}

	dev_priv->ring.virtual_start = dev_priv->ring.map.handle;

248
	dev_priv->cpp = init->cpp;
L
Linus Torvalds 已提交
249 250 251
	dev_priv->back_offset = init->back_offset;
	dev_priv->front_offset = init->front_offset;
	dev_priv->current_page = 0;
252 253
	if (master_priv->sarea_priv)
		master_priv->sarea_priv->pf_current_page = 0;
L
Linus Torvalds 已提交
254 255 256 257 258 259 260 261

	/* Allow hardware batchbuffers unless told otherwise.
	 */
	dev_priv->allow_batchbuffer = 1;

	return 0;
}

262
static int i915_dma_resume(struct drm_device * dev)
L
Linus Torvalds 已提交
263 264 265
{
	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;

266
	DRM_DEBUG_DRIVER("%s\n", __func__);
L
Linus Torvalds 已提交
267 268 269 270

	if (dev_priv->ring.map.handle == NULL) {
		DRM_ERROR("can not ioremap virtual address for"
			  " ring buffer\n");
E
Eric Anholt 已提交
271
		return -ENOMEM;
L
Linus Torvalds 已提交
272 273 274 275 276
	}

	/* Program Hardware Status Page */
	if (!dev_priv->hw_status_page) {
		DRM_ERROR("Can not find hardware status page\n");
E
Eric Anholt 已提交
277
		return -EINVAL;
L
Linus Torvalds 已提交
278
	}
279
	DRM_DEBUG_DRIVER("hw status page @ %p\n",
280
				dev_priv->hw_status_page);
L
Linus Torvalds 已提交
281

282
	if (dev_priv->status_gfx_addr != 0)
283
		I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
284
	else
285
		I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
286
	DRM_DEBUG_DRIVER("Enabled hardware status page\n");
L
Linus Torvalds 已提交
287 288 289 290

	return 0;
}

291 292
static int i915_dma_init(struct drm_device *dev, void *data,
			 struct drm_file *file_priv)
L
Linus Torvalds 已提交
293
{
294
	drm_i915_init_t *init = data;
L
Linus Torvalds 已提交
295 296
	int retcode = 0;

297
	switch (init->func) {
L
Linus Torvalds 已提交
298
	case I915_INIT_DMA:
J
Jesse Barnes 已提交
299
		retcode = i915_initialize(dev, init);
L
Linus Torvalds 已提交
300 301 302 303 304
		break;
	case I915_CLEANUP_DMA:
		retcode = i915_dma_cleanup(dev);
		break;
	case I915_RESUME_DMA:
D
Dave Airlie 已提交
305
		retcode = i915_dma_resume(dev);
L
Linus Torvalds 已提交
306 307
		break;
	default:
E
Eric Anholt 已提交
308
		retcode = -EINVAL;
L
Linus Torvalds 已提交
309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348
		break;
	}

	return retcode;
}

/* Implement basically the same security restrictions as hardware does
 * for MI_BATCH_NON_SECURE.  These can be made stricter at any time.
 *
 * Most of the calculations below involve calculating the size of a
 * particular instruction.  It's important to get the size right as
 * that tells us where the next instruction to check is.  Any illegal
 * instruction detected will be given a size of zero, which is a
 * signal to abort the rest of the buffer.
 */
static int do_validate_cmd(int cmd)
{
	switch (((cmd >> 29) & 0x7)) {
	case 0x0:
		switch ((cmd >> 23) & 0x3f) {
		case 0x0:
			return 1;	/* MI_NOOP */
		case 0x4:
			return 1;	/* MI_FLUSH */
		default:
			return 0;	/* disallow everything else */
		}
		break;
	case 0x1:
		return 0;	/* reserved */
	case 0x2:
		return (cmd & 0xff) + 2;	/* 2d commands */
	case 0x3:
		if (((cmd >> 24) & 0x1f) <= 0x18)
			return 1;

		switch ((cmd >> 24) & 0x1f) {
		case 0x1c:
			return 1;
		case 0x1d:
D
Dave Airlie 已提交
349
			switch ((cmd >> 16) & 0xff) {
L
Linus Torvalds 已提交
350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385
			case 0x3:
				return (cmd & 0x1f) + 2;
			case 0x4:
				return (cmd & 0xf) + 2;
			default:
				return (cmd & 0xffff) + 2;
			}
		case 0x1e:
			if (cmd & (1 << 23))
				return (cmd & 0xffff) + 1;
			else
				return 1;
		case 0x1f:
			if ((cmd & (1 << 23)) == 0)	/* inline vertices */
				return (cmd & 0x1ffff) + 2;
			else if (cmd & (1 << 17))	/* indirect random */
				if ((cmd & 0xffff) == 0)
					return 0;	/* unknown length, too hard */
				else
					return (((cmd & 0xffff) + 1) / 2) + 1;
			else
				return 2;	/* indirect sequential */
		default:
			return 0;
		}
	default:
		return 0;
	}

	return 0;
}

static int validate_cmd(int cmd)
{
	int ret = do_validate_cmd(cmd);

D
Dave Airlie 已提交
386
/*	printk("validate_cmd( %x ): %d\n", cmd, ret); */
L
Linus Torvalds 已提交
387 388 389 390

	return ret;
}

391
static int i915_emit_cmds(struct drm_device * dev, int *buffer, int dwords)
L
Linus Torvalds 已提交
392 393 394 395 396
{
	drm_i915_private_t *dev_priv = dev->dev_private;
	int i;
	RING_LOCALS;

397
	if ((dwords+1) * sizeof(int) >= dev_priv->ring.Size - 8)
E
Eric Anholt 已提交
398
		return -EINVAL;
399

400
	BEGIN_LP_RING((dwords+1)&~1);
401

L
Linus Torvalds 已提交
402 403 404
	for (i = 0; i < dwords;) {
		int cmd, sz;

405
		cmd = buffer[i];
L
Linus Torvalds 已提交
406 407

		if ((sz = validate_cmd(cmd)) == 0 || i + sz > dwords)
E
Eric Anholt 已提交
408
			return -EINVAL;
L
Linus Torvalds 已提交
409 410 411 412

		OUT_RING(cmd);

		while (++i, --sz) {
413
			OUT_RING(buffer[i]);
L
Linus Torvalds 已提交
414 415 416
		}
	}

417 418 419 420 421
	if (dwords & 1)
		OUT_RING(0);

	ADVANCE_LP_RING();

L
Linus Torvalds 已提交
422 423 424
	return 0;
}

425 426
int
i915_emit_box(struct drm_device *dev,
427
	      struct drm_clip_rect *boxes,
428
	      int i, int DR1, int DR4)
L
Linus Torvalds 已提交
429 430
{
	drm_i915_private_t *dev_priv = dev->dev_private;
431
	struct drm_clip_rect box = boxes[i];
L
Linus Torvalds 已提交
432 433 434 435 436
	RING_LOCALS;

	if (box.y2 <= box.y1 || box.x2 <= box.x1 || box.y2 <= 0 || box.x2 <= 0) {
		DRM_ERROR("Bad box %d,%d..%d,%d\n",
			  box.x1, box.y1, box.x2, box.y2);
E
Eric Anholt 已提交
437
		return -EINVAL;
L
Linus Torvalds 已提交
438 439
	}

440 441 442 443
	if (IS_I965G(dev)) {
		BEGIN_LP_RING(4);
		OUT_RING(GFX_OP_DRAWRECT_INFO_I965);
		OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
A
Andrew Morton 已提交
444
		OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
445 446 447 448 449 450 451 452 453 454 455 456
		OUT_RING(DR4);
		ADVANCE_LP_RING();
	} else {
		BEGIN_LP_RING(6);
		OUT_RING(GFX_OP_DRAWRECT_INFO);
		OUT_RING(DR1);
		OUT_RING((box.x1 & 0xffff) | (box.y1 << 16));
		OUT_RING(((box.x2 - 1) & 0xffff) | ((box.y2 - 1) << 16));
		OUT_RING(DR4);
		OUT_RING(0);
		ADVANCE_LP_RING();
	}
L
Linus Torvalds 已提交
457 458 459 460

	return 0;
}

461 462 463 464
/* XXX: Emitting the counter should really be moved to part of the IRQ
 * emit. For now, do it in both places:
 */

465
static void i915_emit_breadcrumb(struct drm_device *dev)
466 467
{
	drm_i915_private_t *dev_priv = dev->dev_private;
468
	struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
469 470
	RING_LOCALS;

471
	dev_priv->counter++;
472
	if (dev_priv->counter > 0x7FFFFFFFUL)
473
		dev_priv->counter = 0;
474 475
	if (master_priv->sarea_priv)
		master_priv->sarea_priv->last_enqueue = dev_priv->counter;
476 477

	BEGIN_LP_RING(4);
478
	OUT_RING(MI_STORE_DWORD_INDEX);
479
	OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
480 481 482 483 484
	OUT_RING(dev_priv->counter);
	OUT_RING(0);
	ADVANCE_LP_RING();
}

485
static int i915_dispatch_cmdbuffer(struct drm_device * dev,
486 487 488
				   drm_i915_cmdbuffer_t *cmd,
				   struct drm_clip_rect *cliprects,
				   void *cmdbuf)
L
Linus Torvalds 已提交
489 490 491 492 493 494
{
	int nbox = cmd->num_cliprects;
	int i = 0, count, ret;

	if (cmd->sz & 0x3) {
		DRM_ERROR("alignment");
E
Eric Anholt 已提交
495
		return -EINVAL;
L
Linus Torvalds 已提交
496 497 498 499 500 501 502 503
	}

	i915_kernel_lost_context(dev);

	count = nbox ? nbox : 1;

	for (i = 0; i < count; i++) {
		if (i < nbox) {
504
			ret = i915_emit_box(dev, cliprects, i,
L
Linus Torvalds 已提交
505 506 507 508 509
					    cmd->DR1, cmd->DR4);
			if (ret)
				return ret;
		}

510
		ret = i915_emit_cmds(dev, cmdbuf, cmd->sz / 4);
L
Linus Torvalds 已提交
511 512 513 514
		if (ret)
			return ret;
	}

515
	i915_emit_breadcrumb(dev);
L
Linus Torvalds 已提交
516 517 518
	return 0;
}

519
static int i915_dispatch_batchbuffer(struct drm_device * dev,
520 521
				     drm_i915_batchbuffer_t * batch,
				     struct drm_clip_rect *cliprects)
L
Linus Torvalds 已提交
522 523 524 525 526 527 528 529
{
	drm_i915_private_t *dev_priv = dev->dev_private;
	int nbox = batch->num_cliprects;
	int i = 0, count;
	RING_LOCALS;

	if ((batch->start | batch->used) & 0x7) {
		DRM_ERROR("alignment");
E
Eric Anholt 已提交
530
		return -EINVAL;
L
Linus Torvalds 已提交
531 532 533 534 535 536 537 538
	}

	i915_kernel_lost_context(dev);

	count = nbox ? nbox : 1;

	for (i = 0; i < count; i++) {
		if (i < nbox) {
539
			int ret = i915_emit_box(dev, cliprects, i,
L
Linus Torvalds 已提交
540 541 542 543 544
						batch->DR1, batch->DR4);
			if (ret)
				return ret;
		}

545
		if (!IS_I830(dev) && !IS_845G(dev)) {
L
Linus Torvalds 已提交
546
			BEGIN_LP_RING(2);
547 548 549 550 551 552 553
			if (IS_I965G(dev)) {
				OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
				OUT_RING(batch->start);
			} else {
				OUT_RING(MI_BATCH_BUFFER_START | (2 << 6));
				OUT_RING(batch->start | MI_BATCH_NON_SECURE);
			}
L
Linus Torvalds 已提交
554 555 556 557 558 559 560 561 562 563 564
			ADVANCE_LP_RING();
		} else {
			BEGIN_LP_RING(4);
			OUT_RING(MI_BATCH_BUFFER);
			OUT_RING(batch->start | MI_BATCH_NON_SECURE);
			OUT_RING(batch->start + batch->used - 4);
			OUT_RING(0);
			ADVANCE_LP_RING();
		}
	}

565
	i915_emit_breadcrumb(dev);
L
Linus Torvalds 已提交
566 567 568 569

	return 0;
}

570
static int i915_dispatch_flip(struct drm_device * dev)
L
Linus Torvalds 已提交
571 572
{
	drm_i915_private_t *dev_priv = dev->dev_private;
573 574
	struct drm_i915_master_private *master_priv =
		dev->primary->master->driver_priv;
L
Linus Torvalds 已提交
575 576
	RING_LOCALS;

577
	if (!master_priv->sarea_priv)
578 579
		return -EINVAL;

580
	DRM_DEBUG_DRIVER("%s: page=%d pfCurrentPage=%d\n",
581 582 583
			  __func__,
			 dev_priv->current_page,
			 master_priv->sarea_priv->pf_current_page);
L
Linus Torvalds 已提交
584

585 586 587
	i915_kernel_lost_context(dev);

	BEGIN_LP_RING(2);
588
	OUT_RING(MI_FLUSH | MI_READ_FLUSH);
589 590
	OUT_RING(0);
	ADVANCE_LP_RING();
L
Linus Torvalds 已提交
591

592 593 594 595 596 597
	BEGIN_LP_RING(6);
	OUT_RING(CMD_OP_DISPLAYBUFFER_INFO | ASYNC_FLIP);
	OUT_RING(0);
	if (dev_priv->current_page == 0) {
		OUT_RING(dev_priv->back_offset);
		dev_priv->current_page = 1;
L
Linus Torvalds 已提交
598
	} else {
599 600
		OUT_RING(dev_priv->front_offset);
		dev_priv->current_page = 0;
L
Linus Torvalds 已提交
601
	}
602 603
	OUT_RING(0);
	ADVANCE_LP_RING();
L
Linus Torvalds 已提交
604

605 606 607 608
	BEGIN_LP_RING(2);
	OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP);
	OUT_RING(0);
	ADVANCE_LP_RING();
L
Linus Torvalds 已提交
609

610
	master_priv->sarea_priv->last_enqueue = dev_priv->counter++;
L
Linus Torvalds 已提交
611 612

	BEGIN_LP_RING(4);
613
	OUT_RING(MI_STORE_DWORD_INDEX);
614
	OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT);
615 616
	OUT_RING(dev_priv->counter);
	OUT_RING(0);
L
Linus Torvalds 已提交
617 618
	ADVANCE_LP_RING();

619
	master_priv->sarea_priv->pf_current_page = dev_priv->current_page;
620
	return 0;
L
Linus Torvalds 已提交
621 622
}

623
static int i915_quiescent(struct drm_device * dev)
L
Linus Torvalds 已提交
624 625 626 627
{
	drm_i915_private_t *dev_priv = dev->dev_private;

	i915_kernel_lost_context(dev);
628
	return i915_wait_ring(dev, dev_priv->ring.Size - 8, __func__);
L
Linus Torvalds 已提交
629 630
}

631 632
static int i915_flush_ioctl(struct drm_device *dev, void *data,
			    struct drm_file *file_priv)
L
Linus Torvalds 已提交
633
{
634 635 636
	int ret;

	RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
L
Linus Torvalds 已提交
637

638 639 640 641 642
	mutex_lock(&dev->struct_mutex);
	ret = i915_quiescent(dev);
	mutex_unlock(&dev->struct_mutex);

	return ret;
L
Linus Torvalds 已提交
643 644
}

645 646
static int i915_batchbuffer(struct drm_device *dev, void *data,
			    struct drm_file *file_priv)
L
Linus Torvalds 已提交
647 648
{
	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
649
	struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
L
Linus Torvalds 已提交
650
	drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
651
	    master_priv->sarea_priv;
652
	drm_i915_batchbuffer_t *batch = data;
L
Linus Torvalds 已提交
653
	int ret;
654
	struct drm_clip_rect *cliprects = NULL;
L
Linus Torvalds 已提交
655 656 657

	if (!dev_priv->allow_batchbuffer) {
		DRM_ERROR("Batchbuffer ioctl disabled\n");
E
Eric Anholt 已提交
658
		return -EINVAL;
L
Linus Torvalds 已提交
659 660
	}

661
	DRM_DEBUG_DRIVER("i915 batchbuffer, start %x used %d cliprects %d\n",
662
			batch->start, batch->used, batch->num_cliprects);
L
Linus Torvalds 已提交
663

664
	RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
L
Linus Torvalds 已提交
665

666 667 668 669
	if (batch->num_cliprects < 0)
		return -EINVAL;

	if (batch->num_cliprects) {
670 671 672
		cliprects = kcalloc(batch->num_cliprects,
				    sizeof(struct drm_clip_rect),
				    GFP_KERNEL);
673 674 675 676 677 678 679 680 681
		if (cliprects == NULL)
			return -ENOMEM;

		ret = copy_from_user(cliprects, batch->cliprects,
				     batch->num_cliprects *
				     sizeof(struct drm_clip_rect));
		if (ret != 0)
			goto fail_free;
	}
L
Linus Torvalds 已提交
682

683
	mutex_lock(&dev->struct_mutex);
684
	ret = i915_dispatch_batchbuffer(dev, batch, cliprects);
685
	mutex_unlock(&dev->struct_mutex);
L
Linus Torvalds 已提交
686

687
	if (sarea_priv)
688
		sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
689 690

fail_free:
691
	kfree(cliprects);
692

L
Linus Torvalds 已提交
693 694 695
	return ret;
}

696 697
static int i915_cmdbuffer(struct drm_device *dev, void *data,
			  struct drm_file *file_priv)
L
Linus Torvalds 已提交
698 699
{
	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
700
	struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
L
Linus Torvalds 已提交
701
	drm_i915_sarea_t *sarea_priv = (drm_i915_sarea_t *)
702
	    master_priv->sarea_priv;
703
	drm_i915_cmdbuffer_t *cmdbuf = data;
704 705
	struct drm_clip_rect *cliprects = NULL;
	void *batch_data;
L
Linus Torvalds 已提交
706 707
	int ret;

708
	DRM_DEBUG_DRIVER("i915 cmdbuffer, buf %p sz %d cliprects %d\n",
709
			cmdbuf->buf, cmdbuf->sz, cmdbuf->num_cliprects);
L
Linus Torvalds 已提交
710

711
	RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
L
Linus Torvalds 已提交
712

713 714 715
	if (cmdbuf->num_cliprects < 0)
		return -EINVAL;

716
	batch_data = kmalloc(cmdbuf->sz, GFP_KERNEL);
717 718 719 720 721 722 723 724
	if (batch_data == NULL)
		return -ENOMEM;

	ret = copy_from_user(batch_data, cmdbuf->buf, cmdbuf->sz);
	if (ret != 0)
		goto fail_batch_free;

	if (cmdbuf->num_cliprects) {
725 726
		cliprects = kcalloc(cmdbuf->num_cliprects,
				    sizeof(struct drm_clip_rect), GFP_KERNEL);
727 728 729 730 731 732 733 734
		if (cliprects == NULL)
			goto fail_batch_free;

		ret = copy_from_user(cliprects, cmdbuf->cliprects,
				     cmdbuf->num_cliprects *
				     sizeof(struct drm_clip_rect));
		if (ret != 0)
			goto fail_clip_free;
L
Linus Torvalds 已提交
735 736
	}

737
	mutex_lock(&dev->struct_mutex);
738
	ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
739
	mutex_unlock(&dev->struct_mutex);
L
Linus Torvalds 已提交
740 741
	if (ret) {
		DRM_ERROR("i915_dispatch_cmdbuffer failed\n");
742
		goto fail_clip_free;
L
Linus Torvalds 已提交
743 744
	}

745
	if (sarea_priv)
746
		sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
747 748

fail_clip_free:
749
	kfree(cliprects);
750
fail_batch_free:
751
	kfree(batch_data);
752 753

	return ret;
L
Linus Torvalds 已提交
754 755
}

756 757
static int i915_flip_bufs(struct drm_device *dev, void *data,
			  struct drm_file *file_priv)
L
Linus Torvalds 已提交
758
{
759 760
	int ret;

761
	DRM_DEBUG_DRIVER("%s\n", __func__);
L
Linus Torvalds 已提交
762

763
	RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
L
Linus Torvalds 已提交
764

765 766 767 768 769
	mutex_lock(&dev->struct_mutex);
	ret = i915_dispatch_flip(dev);
	mutex_unlock(&dev->struct_mutex);

	return ret;
L
Linus Torvalds 已提交
770 771
}

772 773
static int i915_getparam(struct drm_device *dev, void *data,
			 struct drm_file *file_priv)
L
Linus Torvalds 已提交
774 775
{
	drm_i915_private_t *dev_priv = dev->dev_private;
776
	drm_i915_getparam_t *param = data;
L
Linus Torvalds 已提交
777 778 779
	int value;

	if (!dev_priv) {
780
		DRM_ERROR("called with no initialization\n");
E
Eric Anholt 已提交
781
		return -EINVAL;
L
Linus Torvalds 已提交
782 783
	}

784
	switch (param->param) {
L
Linus Torvalds 已提交
785
	case I915_PARAM_IRQ_ACTIVE:
786
		value = dev->pdev->irq ? 1 : 0;
L
Linus Torvalds 已提交
787 788 789 790
		break;
	case I915_PARAM_ALLOW_BATCHBUFFER:
		value = dev_priv->allow_batchbuffer ? 1 : 0;
		break;
D
Dave Airlie 已提交
791 792 793
	case I915_PARAM_LAST_DISPATCH:
		value = READ_BREADCRUMB(dev_priv);
		break;
K
Kristian Høgsberg 已提交
794 795 796
	case I915_PARAM_CHIPSET_ID:
		value = dev->pci_device;
		break;
797
	case I915_PARAM_HAS_GEM:
798
		value = dev_priv->has_gem;
799
		break;
800 801 802
	case I915_PARAM_NUM_FENCES_AVAIL:
		value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
		break;
L
Linus Torvalds 已提交
803
	default:
804
		DRM_DEBUG_DRIVER("Unknown parameter %d\n",
805
					param->param);
E
Eric Anholt 已提交
806
		return -EINVAL;
L
Linus Torvalds 已提交
807 808
	}

809
	if (DRM_COPY_TO_USER(param->value, &value, sizeof(int))) {
L
Linus Torvalds 已提交
810
		DRM_ERROR("DRM_COPY_TO_USER failed\n");
E
Eric Anholt 已提交
811
		return -EFAULT;
L
Linus Torvalds 已提交
812 813 814 815 816
	}

	return 0;
}

817 818
static int i915_setparam(struct drm_device *dev, void *data,
			 struct drm_file *file_priv)
L
Linus Torvalds 已提交
819 820
{
	drm_i915_private_t *dev_priv = dev->dev_private;
821
	drm_i915_setparam_t *param = data;
L
Linus Torvalds 已提交
822 823

	if (!dev_priv) {
824
		DRM_ERROR("called with no initialization\n");
E
Eric Anholt 已提交
825
		return -EINVAL;
L
Linus Torvalds 已提交
826 827
	}

828
	switch (param->param) {
L
Linus Torvalds 已提交
829 830 831
	case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
		break;
	case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
832
		dev_priv->tex_lru_log_granularity = param->value;
L
Linus Torvalds 已提交
833 834
		break;
	case I915_SETPARAM_ALLOW_BATCHBUFFER:
835
		dev_priv->allow_batchbuffer = param->value;
L
Linus Torvalds 已提交
836
		break;
837 838 839 840 841 842 843
	case I915_SETPARAM_NUM_USED_FENCES:
		if (param->value > dev_priv->num_fence_regs ||
		    param->value < 0)
			return -EINVAL;
		/* Userspace can use first N regs */
		dev_priv->fence_reg_start = param->value;
		break;
L
Linus Torvalds 已提交
844
	default:
845
		DRM_DEBUG_DRIVER("unknown parameter %d\n",
846
					param->param);
E
Eric Anholt 已提交
847
		return -EINVAL;
L
Linus Torvalds 已提交
848 849 850 851 852
	}

	return 0;
}

853 854
static int i915_set_status_page(struct drm_device *dev, void *data,
				struct drm_file *file_priv)
855 856
{
	drm_i915_private_t *dev_priv = dev->dev_private;
857
	drm_i915_hws_addr_t *hws = data;
858 859 860

	if (!I915_NEED_GFX_HWS(dev))
		return -EINVAL;
861 862

	if (!dev_priv) {
863
		DRM_ERROR("called with no initialization\n");
E
Eric Anholt 已提交
864
		return -EINVAL;
865 866
	}

J
Jesse Barnes 已提交
867 868 869 870 871
	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
		WARN(1, "tried to set status page when mode setting active\n");
		return 0;
	}

872
	DRM_DEBUG_DRIVER("set status page addr 0x%08x\n", (u32)hws->addr);
873 874

	dev_priv->status_gfx_addr = hws->addr & (0x1ffff<<12);
875

876
	dev_priv->hws_map.offset = dev->agp->base + hws->addr;
877 878 879 880 881
	dev_priv->hws_map.size = 4*1024;
	dev_priv->hws_map.type = 0;
	dev_priv->hws_map.flags = 0;
	dev_priv->hws_map.mtrr = 0;

882
	drm_core_ioremap_wc(&dev_priv->hws_map, dev);
883 884 885 886 887
	if (dev_priv->hws_map.handle == NULL) {
		i915_dma_cleanup(dev);
		dev_priv->status_gfx_addr = 0;
		DRM_ERROR("can not ioremap virtual address for"
				" G33 hw status page\n");
E
Eric Anholt 已提交
888
		return -ENOMEM;
889 890 891 892
	}
	dev_priv->hw_status_page = dev_priv->hws_map.handle;

	memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
893
	I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr);
894
	DRM_DEBUG_DRIVER("load hws HWS_PGA with gfx mem 0x%x\n",
895
				dev_priv->status_gfx_addr);
896
	DRM_DEBUG_DRIVER("load hws at %p\n",
897
				dev_priv->hw_status_page);
898 899 900
	return 0;
}

901 902 903 904 905 906 907 908 909 910 911 912
static int i915_get_bridge_dev(struct drm_device *dev)
{
	struct drm_i915_private *dev_priv = dev->dev_private;

	dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
	if (!dev_priv->bridge_dev) {
		DRM_ERROR("bridge device not found\n");
		return -1;
	}
	return 0;
}

J
Jesse Barnes 已提交
913 914 915 916 917 918 919 920 921 922
/**
 * i915_probe_agp - get AGP bootup configuration
 * @pdev: PCI device
 * @aperture_size: returns AGP aperture configured size
 * @preallocated_size: returns size of BIOS preallocated AGP space
 *
 * Since Intel integrated graphics are UMA, the BIOS has to set aside
 * some RAM for the framebuffer at early boot.  This code figures out
 * how much was set aside so we can use it for our own purposes.
 */
923
static int i915_probe_agp(struct drm_device *dev, uint32_t *aperture_size,
924 925
			  uint32_t *preallocated_size,
			  uint32_t *start)
J
Jesse Barnes 已提交
926
{
927
	struct drm_i915_private *dev_priv = dev->dev_private;
J
Jesse Barnes 已提交
928 929
	u16 tmp = 0;
	unsigned long overhead;
930
	unsigned long stolen;
J
Jesse Barnes 已提交
931 932

	/* Get the fb aperture size and "stolen" memory amount. */
933
	pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &tmp);
J
Jesse Barnes 已提交
934 935 936 937

	*aperture_size = 1024 * 1024;
	*preallocated_size = 1024 * 1024;

938
	switch (dev->pdev->device) {
J
Jesse Barnes 已提交
939 940 941 942 943 944 945 946 947 948 949
	case PCI_DEVICE_ID_INTEL_82830_CGC:
	case PCI_DEVICE_ID_INTEL_82845G_IG:
	case PCI_DEVICE_ID_INTEL_82855GM_IG:
	case PCI_DEVICE_ID_INTEL_82865_IG:
		if ((tmp & INTEL_GMCH_MEM_MASK) == INTEL_GMCH_MEM_64M)
			*aperture_size *= 64;
		else
			*aperture_size *= 128;
		break;
	default:
		/* 9xx supports large sizes, just look at the length */
950
		*aperture_size = pci_resource_len(dev->pdev, 2);
J
Jesse Barnes 已提交
951 952 953 954 955 956 957
		break;
	}

	/*
	 * Some of the preallocated space is taken by the GTT
	 * and popup.  GTT is 1K per MB of aperture size, and popup is 4K.
	 */
958
	if (IS_G4X(dev) || IS_IGD(dev) || IS_IGDNG(dev))
959 960 961 962
		overhead = 4096;
	else
		overhead = (*aperture_size / 1024) + 4096;

963 964 965 966
	switch (tmp & INTEL_GMCH_GMS_MASK) {
	case INTEL_855_GMCH_GMS_DISABLED:
		DRM_ERROR("video memory is disabled\n");
		return -1;
J
Jesse Barnes 已提交
967
	case INTEL_855_GMCH_GMS_STOLEN_1M:
968 969
		stolen = 1 * 1024 * 1024;
		break;
J
Jesse Barnes 已提交
970
	case INTEL_855_GMCH_GMS_STOLEN_4M:
971
		stolen = 4 * 1024 * 1024;
J
Jesse Barnes 已提交
972 973
		break;
	case INTEL_855_GMCH_GMS_STOLEN_8M:
974
		stolen = 8 * 1024 * 1024;
J
Jesse Barnes 已提交
975 976
		break;
	case INTEL_855_GMCH_GMS_STOLEN_16M:
977
		stolen = 16 * 1024 * 1024;
J
Jesse Barnes 已提交
978 979
		break;
	case INTEL_855_GMCH_GMS_STOLEN_32M:
980
		stolen = 32 * 1024 * 1024;
J
Jesse Barnes 已提交
981 982
		break;
	case INTEL_915G_GMCH_GMS_STOLEN_48M:
983
		stolen = 48 * 1024 * 1024;
J
Jesse Barnes 已提交
984 985
		break;
	case INTEL_915G_GMCH_GMS_STOLEN_64M:
986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004
		stolen = 64 * 1024 * 1024;
		break;
	case INTEL_GMCH_GMS_STOLEN_128M:
		stolen = 128 * 1024 * 1024;
		break;
	case INTEL_GMCH_GMS_STOLEN_256M:
		stolen = 256 * 1024 * 1024;
		break;
	case INTEL_GMCH_GMS_STOLEN_96M:
		stolen = 96 * 1024 * 1024;
		break;
	case INTEL_GMCH_GMS_STOLEN_160M:
		stolen = 160 * 1024 * 1024;
		break;
	case INTEL_GMCH_GMS_STOLEN_224M:
		stolen = 224 * 1024 * 1024;
		break;
	case INTEL_GMCH_GMS_STOLEN_352M:
		stolen = 352 * 1024 * 1024;
J
Jesse Barnes 已提交
1005 1006 1007
		break;
	default:
		DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
1008
			tmp & INTEL_GMCH_GMS_MASK);
J
Jesse Barnes 已提交
1009 1010
		return -1;
	}
1011
	*preallocated_size = stolen - overhead;
1012
	*start = overhead;
J
Jesse Barnes 已提交
1013 1014 1015 1016

	return 0;
}

1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127
#define PTE_ADDRESS_MASK		0xfffff000
#define PTE_ADDRESS_MASK_HIGH		0x000000f0 /* i915+ */
#define PTE_MAPPING_TYPE_UNCACHED	(0 << 1)
#define PTE_MAPPING_TYPE_DCACHE		(1 << 1) /* i830 only */
#define PTE_MAPPING_TYPE_CACHED		(3 << 1)
#define PTE_MAPPING_TYPE_MASK		(3 << 1)
#define PTE_VALID			(1 << 0)

/**
 * i915_gtt_to_phys - take a GTT address and turn it into a physical one
 * @dev: drm device
 * @gtt_addr: address to translate
 *
 * Some chip functions require allocations from stolen space but need the
 * physical address of the memory in question.  We use this routine
 * to get a physical address suitable for register programming from a given
 * GTT address.
 */
static unsigned long i915_gtt_to_phys(struct drm_device *dev,
				      unsigned long gtt_addr)
{
	unsigned long *gtt;
	unsigned long entry, phys;
	int gtt_bar = IS_I9XX(dev) ? 0 : 1;
	int gtt_offset, gtt_size;

	if (IS_I965G(dev)) {
		if (IS_G4X(dev) || IS_IGDNG(dev)) {
			gtt_offset = 2*1024*1024;
			gtt_size = 2*1024*1024;
		} else {
			gtt_offset = 512*1024;
			gtt_size = 512*1024;
		}
	} else {
		gtt_bar = 3;
		gtt_offset = 0;
		gtt_size = pci_resource_len(dev->pdev, gtt_bar);
	}

	gtt = ioremap_wc(pci_resource_start(dev->pdev, gtt_bar) + gtt_offset,
			 gtt_size);
	if (!gtt) {
		DRM_ERROR("ioremap of GTT failed\n");
		return 0;
	}

	entry = *(volatile u32 *)(gtt + (gtt_addr / 1024));

	DRM_DEBUG("GTT addr: 0x%08lx, PTE: 0x%08lx\n", gtt_addr, entry);

	/* Mask out these reserved bits on this hardware. */
	if (!IS_I9XX(dev) || IS_I915G(dev) || IS_I915GM(dev) ||
	    IS_I945G(dev) || IS_I945GM(dev)) {
		entry &= ~PTE_ADDRESS_MASK_HIGH;
	}

	/* If it's not a mapping type we know, then bail. */
	if ((entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_UNCACHED &&
	    (entry & PTE_MAPPING_TYPE_MASK) != PTE_MAPPING_TYPE_CACHED)	{
		iounmap(gtt);
		return 0;
	}

	if (!(entry & PTE_VALID)) {
		DRM_ERROR("bad GTT entry in stolen space\n");
		iounmap(gtt);
		return 0;
	}

	iounmap(gtt);

	phys =(entry & PTE_ADDRESS_MASK) |
		((uint64_t)(entry & PTE_ADDRESS_MASK_HIGH) << (32 - 4));

	DRM_DEBUG("GTT addr: 0x%08lx, phys addr: 0x%08lx\n", gtt_addr, phys);

	return phys;
}

static void i915_warn_stolen(struct drm_device *dev)
{
	DRM_ERROR("not enough stolen space for compressed buffer, disabling\n");
	DRM_ERROR("hint: you may be able to increase stolen memory size in the BIOS to avoid this\n");
}

static void i915_setup_compression(struct drm_device *dev, int size)
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct drm_mm_node *compressed_fb, *compressed_llb;
	unsigned long cfb_base, ll_base;

	/* Leave 1M for line length buffer & misc. */
	compressed_fb = drm_mm_search_free(&dev_priv->vram, size, 4096, 0);
	if (!compressed_fb) {
		i915_warn_stolen(dev);
		return;
	}

	compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
	if (!compressed_fb) {
		i915_warn_stolen(dev);
		return;
	}

	compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096, 4096, 0);
	if (!compressed_llb) {
		i915_warn_stolen(dev);
		return;
	}

1128
	compressed_llb = drm_mm_get_block(compressed_llb, 4096, 4096);
1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151
	if (!compressed_llb) {
		i915_warn_stolen(dev);
		return;
	}

	dev_priv->cfb_size = size;

	cfb_base = i915_gtt_to_phys(dev, compressed_fb->start);
	ll_base = i915_gtt_to_phys(dev, compressed_llb->start);
	if (!cfb_base || !ll_base) {
		DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
		drm_mm_put_block(compressed_fb);
		drm_mm_put_block(compressed_llb);
	}

	i8xx_disable_fbc(dev);

	DRM_DEBUG("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n", cfb_base,
		  ll_base, size >> 20);
	I915_WRITE(FBC_CFB_BASE, cfb_base);
	I915_WRITE(FBC_LL_BASE, ll_base);
}

1152
static int i915_load_modeset_init(struct drm_device *dev,
1153
				  unsigned long prealloc_start,
1154 1155
				  unsigned long prealloc_size,
				  unsigned long agp_size)
J
Jesse Barnes 已提交
1156 1157 1158 1159 1160 1161 1162 1163
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	int fb_bar = IS_I9XX(dev) ? 2 : 0;
	int ret = 0;

	dev->mode_config.fb_base = drm_get_resource_start(dev, fb_bar) &
		0xff000000;

1164
	if (IS_MOBILE(dev) || IS_I9XX(dev))
J
Jesse Barnes 已提交
1165 1166 1167 1168
		dev_priv->cursor_needs_physical = true;
	else
		dev_priv->cursor_needs_physical = false;

1169 1170 1171
	if (IS_I965G(dev) || IS_G33(dev))
		dev_priv->cursor_needs_physical = false;

J
Jesse Barnes 已提交
1172 1173
	/* Basic memrange allocator for stolen space (aka vram) */
	drm_mm_init(&dev_priv->vram, 0, prealloc_size);
1174
	DRM_INFO("set up %ldM of stolen space\n", prealloc_size / (1024*1024));
J
Jesse Barnes 已提交
1175

1176 1177 1178 1179 1180 1181 1182 1183 1184 1185
	/* Let GEM Manage from end of prealloc space to end of aperture.
	 *
	 * However, leave one page at the end still bound to the scratch page.
	 * There are a number of places where the hardware apparently
	 * prefetches past the end of the object, and we've seen multiple
	 * hangs with the GPU head pointer stuck in a batchbuffer bound
	 * at the last page of the aperture.  One page should be enough to
	 * keep any prefetching inside of the aperture.
	 */
	i915_gem_do_init(dev, prealloc_size, agp_size - 4096);
J
Jesse Barnes 已提交
1186 1187 1188

	ret = i915_gem_init_ringbuffer(dev);
	if (ret)
1189
		goto out;
J
Jesse Barnes 已提交
1190

1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203
	/* Try to set up FBC with a reasonable compressed buffer size */
	if (IS_MOBILE(dev) && (IS_I9XX(dev) || IS_I965G(dev)) &&
	    i915_powersave) {
		int cfb_size;

		/* Try to get an 8M buffer... */
		if (prealloc_size > (9*1024*1024))
			cfb_size = 8*1024*1024;
		else /* fall back to 7/8 of the stolen space */
			cfb_size = prealloc_size * 7 / 8;
		i915_setup_compression(dev, cfb_size);
	}

J
Jesse Barnes 已提交
1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227
	/* Allow hardware batchbuffers unless told otherwise.
	 */
	dev_priv->allow_batchbuffer = 1;

	ret = intel_init_bios(dev);
	if (ret)
		DRM_INFO("failed to find VBIOS tables\n");

	ret = drm_irq_install(dev);
	if (ret)
		goto destroy_ringbuffer;

	/* Always safe in the mode setting case. */
	/* FIXME: do pre/post-mode set stuff in core KMS code */
	dev->vblank_disable_allowed = 1;

	/*
	 * Initialize the hardware status page IRQ location.
	 */

	I915_WRITE(INSTPM, (1 << 5) | (1 << 21));

	intel_modeset_init(dev);

1228
	drm_helper_initial_config(dev);
J
Jesse Barnes 已提交
1229 1230 1231 1232 1233 1234 1235 1236 1237

	return 0;

destroy_ringbuffer:
	i915_gem_cleanup_ringbuffer(dev);
out:
	return ret;
}

1238 1239 1240 1241
int i915_master_create(struct drm_device *dev, struct drm_master *master)
{
	struct drm_i915_master_private *master_priv;

1242
	master_priv = kzalloc(sizeof(*master_priv), GFP_KERNEL);
1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256
	if (!master_priv)
		return -ENOMEM;

	master->driver_priv = master_priv;
	return 0;
}

void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
{
	struct drm_i915_master_private *master_priv = master->driver_priv;

	if (!master_priv)
		return;

1257
	kfree(master_priv);
1258 1259 1260 1261

	master->driver_priv = NULL;
}

1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
static void i915_get_mem_freq(struct drm_device *dev)
{
	drm_i915_private_t *dev_priv = dev->dev_private;
	u32 tmp;

	if (!IS_IGD(dev))
		return;

	tmp = I915_READ(CLKCFG);

	switch (tmp & CLKCFG_FSB_MASK) {
	case CLKCFG_FSB_533:
		dev_priv->fsb_freq = 533; /* 133*4 */
		break;
	case CLKCFG_FSB_800:
		dev_priv->fsb_freq = 800; /* 200*4 */
		break;
	case CLKCFG_FSB_667:
		dev_priv->fsb_freq =  667; /* 167*4 */
		break;
	case CLKCFG_FSB_400:
		dev_priv->fsb_freq = 400; /* 100*4 */
		break;
	}

	switch (tmp & CLKCFG_MEM_MASK) {
	case CLKCFG_MEM_533:
		dev_priv->mem_freq = 533;
		break;
	case CLKCFG_MEM_667:
		dev_priv->mem_freq = 667;
		break;
	case CLKCFG_MEM_800:
		dev_priv->mem_freq = 800;
		break;
	}
}

J
Jesse Barnes 已提交
1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310
/**
 * i915_driver_load - setup chip and create an initial config
 * @dev: DRM device
 * @flags: startup flags
 *
 * The driver load routine has to do several things:
 *   - drive output discovery via intel_modeset_init()
 *   - initialize the memory manager
 *   - allocate initial config memory
 *   - setup the DRM framebuffer with the allocated memory
 */
1311
int i915_driver_load(struct drm_device *dev, unsigned long flags)
1312
{
J
Jesse Barnes 已提交
1313
	struct drm_i915_private *dev_priv = dev->dev_private;
1314
	resource_size_t base, size;
J
Jesse Barnes 已提交
1315
	int ret = 0, mmio_bar = IS_I9XX(dev) ? 0 : 1;
1316
	uint32_t agp_size, prealloc_size, prealloc_start;
J
Jesse Barnes 已提交
1317

1318 1319 1320 1321 1322 1323 1324
	/* i915 has 4 more counters */
	dev->counters += 4;
	dev->types[6] = _DRM_STAT_IRQ;
	dev->types[7] = _DRM_STAT_PRIMARY;
	dev->types[8] = _DRM_STAT_SECONDARY;
	dev->types[9] = _DRM_STAT_DMA;

1325
	dev_priv = kzalloc(sizeof(drm_i915_private_t), GFP_KERNEL);
J
Jesse Barnes 已提交
1326 1327 1328 1329
	if (dev_priv == NULL)
		return -ENOMEM;

	dev->dev_private = (void *)dev_priv;
1330
	dev_priv->dev = dev;
J
Jesse Barnes 已提交
1331 1332 1333 1334 1335

	/* Add register map (needed for suspend/resume) */
	base = drm_get_resource_start(dev, mmio_bar);
	size = drm_get_resource_len(dev, mmio_bar);

1336 1337 1338 1339 1340
	if (i915_get_bridge_dev(dev)) {
		ret = -EIO;
		goto free_priv;
	}

1341
	dev_priv->regs = ioremap(base, size);
J
Jesse Barnes 已提交
1342 1343 1344
	if (!dev_priv->regs) {
		DRM_ERROR("failed to map registers\n");
		ret = -EIO;
1345
		goto put_bridge;
J
Jesse Barnes 已提交
1346
	}
1347

1348 1349 1350
        dev_priv->mm.gtt_mapping =
		io_mapping_create_wc(dev->agp->base,
				     dev->agp->agp_info.aper_size * 1024*1024);
1351 1352 1353 1354 1355
	if (dev_priv->mm.gtt_mapping == NULL) {
		ret = -EIO;
		goto out_rmmap;
	}

1356 1357 1358 1359 1360 1361 1362 1363 1364 1365
	/* Set up a WC MTRR for non-PAT systems.  This is more common than
	 * one would think, because the kernel disables PAT on first
	 * generation Core chips because WC PAT gets overridden by a UC
	 * MTRR if present.  Even if a UC MTRR isn't present.
	 */
	dev_priv->mm.gtt_mtrr = mtrr_add(dev->agp->base,
					 dev->agp->agp_info.aper_size *
					 1024 * 1024,
					 MTRR_TYPE_WRCOMB, 1);
	if (dev_priv->mm.gtt_mtrr < 0) {
1366
		DRM_INFO("MTRR allocation failed.  Graphics "
1367 1368 1369
			 "performance may suffer.\n");
	}

1370
	ret = i915_probe_agp(dev, &agp_size, &prealloc_size, &prealloc_start);
1371 1372 1373
	if (ret)
		goto out_iomapfree;

1374 1375 1376 1377 1378 1379 1380
	dev_priv->wq = create_workqueue("i915");
	if (dev_priv->wq == NULL) {
		DRM_ERROR("Failed to create our workqueue.\n");
		ret = -ENOMEM;
		goto out_iomapfree;
	}

1381 1382 1383
	/* enable GEM by default */
	dev_priv->has_gem = 1;

1384 1385 1386 1387 1388 1389 1390 1391 1392
	if (prealloc_size > agp_size * 3 / 4) {
		DRM_ERROR("Detected broken video BIOS with %d/%dkB of video "
			  "memory stolen.\n",
			  prealloc_size / 1024, agp_size / 1024);
		DRM_ERROR("Disabling GEM. (try reducing stolen memory or "
			  "updating the BIOS to fix).\n");
		dev_priv->has_gem = 0;
	}

1393
	dev->driver->get_vblank_counter = i915_get_vblank_counter;
1394
	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
1395
	if (IS_G4X(dev) || IS_IGDNG(dev)) {
1396
		dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
1397
		dev->driver->get_vblank_counter = gm45_get_vblank_counter;
1398
	}
1399

1400 1401
	i915_gem_load(dev);

1402 1403 1404 1405
	/* Init HWS */
	if (!I915_NEED_GFX_HWS(dev)) {
		ret = i915_init_phys_hws(dev);
		if (ret != 0)
1406
			goto out_workqueue_free;
1407
	}
1408

1409 1410
	i915_get_mem_freq(dev);

1411 1412 1413 1414 1415 1416
	/* On the 945G/GM, the chipset reports the MSI capability on the
	 * integrated graphics even though the support isn't actually there
	 * according to the published specs.  It doesn't appear to function
	 * correctly in testing on 945G.
	 * This may be a side effect of MSI having been made available for PEG
	 * and the registers being closely associated.
1417 1418
	 *
	 * According to chipset errata, on the 965GM, MSI interrupts may
1419 1420
	 * be lost or delayed, but we use them anyways to avoid
	 * stuck interrupts on some machines.
1421
	 */
1422
	if (!IS_I945G(dev) && !IS_I945GM(dev))
1423
		pci_enable_msi(dev->pdev);
1424 1425

	spin_lock_init(&dev_priv->user_irq_lock);
1426
	spin_lock_init(&dev_priv->error_lock);
J
Jesse Barnes 已提交
1427
	dev_priv->user_irq_refcount = 0;
1428

1429 1430 1431 1432 1433 1434 1435
	ret = drm_vblank_init(dev, I915_NUM_PIPE);

	if (ret) {
		(void) i915_driver_unload(dev);
		return ret;
	}

J
Jesse Barnes 已提交
1436
	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
1437 1438
		ret = i915_load_modeset_init(dev, prealloc_start,
					     prealloc_size, agp_size);
J
Jesse Barnes 已提交
1439 1440
		if (ret < 0) {
			DRM_ERROR("failed to init modeset\n");
1441
			goto out_workqueue_free;
J
Jesse Barnes 已提交
1442 1443 1444
		}
	}

1445
	/* Must be done after probing outputs */
1446 1447 1448
	/* FIXME: verify on IGDNG */
	if (!IS_IGDNG(dev))
		intel_opregion_init(dev, 0);
1449

B
Ben Gamari 已提交
1450 1451
	setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed,
		    (unsigned long) dev);
J
Jesse Barnes 已提交
1452 1453
	return 0;

1454 1455
out_workqueue_free:
	destroy_workqueue(dev_priv->wq);
1456 1457
out_iomapfree:
	io_mapping_free(dev_priv->mm.gtt_mapping);
J
Jesse Barnes 已提交
1458 1459
out_rmmap:
	iounmap(dev_priv->regs);
1460 1461
put_bridge:
	pci_dev_put(dev_priv->bridge_dev);
J
Jesse Barnes 已提交
1462
free_priv:
1463
	kfree(dev_priv);
J
Jesse Barnes 已提交
1464 1465 1466 1467 1468 1469 1470
	return ret;
}

int i915_driver_unload(struct drm_device *dev)
{
	struct drm_i915_private *dev_priv = dev->dev_private;

1471
	destroy_workqueue(dev_priv->wq);
B
Ben Gamari 已提交
1472
	del_timer_sync(&dev_priv->hangcheck_timer);
1473

1474 1475 1476 1477 1478 1479 1480
	io_mapping_free(dev_priv->mm.gtt_mapping);
	if (dev_priv->mm.gtt_mtrr >= 0) {
		mtrr_del(dev_priv->mm.gtt_mtrr, dev->agp->base,
			 dev->agp->agp_info.aper_size * 1024 * 1024);
		dev_priv->mm.gtt_mtrr = -1;
	}

J
Jesse Barnes 已提交
1481 1482 1483 1484
	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
		drm_irq_uninstall(dev);
	}

1485 1486 1487
	if (dev->pdev->msi_enabled)
		pci_disable_msi(dev->pdev);

1488 1489
	if (dev_priv->regs != NULL)
		iounmap(dev_priv->regs);
J
Jesse Barnes 已提交
1490

1491 1492
	if (!IS_IGDNG(dev))
		intel_opregion_free(dev, 0);
1493

J
Jesse Barnes 已提交
1494 1495 1496
	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
		intel_modeset_cleanup(dev);

1497 1498
		i915_gem_free_all_phys_object(dev);

J
Jesse Barnes 已提交
1499 1500 1501 1502 1503 1504 1505
		mutex_lock(&dev->struct_mutex);
		i915_gem_cleanup_ringbuffer(dev);
		mutex_unlock(&dev->struct_mutex);
		drm_mm_takedown(&dev_priv->vram);
		i915_gem_lastclose(dev);
	}

1506
	pci_dev_put(dev_priv->bridge_dev);
1507
	kfree(dev->dev_private);
J
Jesse Barnes 已提交
1508

1509 1510 1511
	return 0;
}

1512 1513 1514 1515
int i915_driver_open(struct drm_device *dev, struct drm_file *file_priv)
{
	struct drm_i915_file_private *i915_file_priv;

1516
	DRM_DEBUG_DRIVER("\n");
1517
	i915_file_priv = (struct drm_i915_file_private *)
1518
	    kmalloc(sizeof(*i915_file_priv), GFP_KERNEL);
1519 1520 1521 1522 1523 1524

	if (!i915_file_priv)
		return -ENOMEM;

	file_priv->driver_priv = i915_file_priv;

1525
	INIT_LIST_HEAD(&i915_file_priv->mm.request_list);
1526 1527 1528 1529

	return 0;
}

J
Jesse Barnes 已提交
1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541
/**
 * i915_driver_lastclose - clean up after all DRM clients have exited
 * @dev: DRM device
 *
 * Take care of cleaning up after all DRM clients have exited.  In the
 * mode setting case, we want to restore the kernel's initial mode (just
 * in case the last client left us in a bad state).
 *
 * Additionally, in the non-mode setting case, we'll tear down the AGP
 * and DMA structures, since the kernel won't be using them, and clea
 * up any GEM state.
 */
1542
void i915_driver_lastclose(struct drm_device * dev)
L
Linus Torvalds 已提交
1543
{
J
Jesse Barnes 已提交
1544 1545
	drm_i915_private_t *dev_priv = dev->dev_private;

J
Jesse Barnes 已提交
1546
	if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
1547
		drm_fb_helper_restore();
D
Dave Airlie 已提交
1548
		return;
J
Jesse Barnes 已提交
1549
	}
D
Dave Airlie 已提交
1550

1551 1552
	i915_gem_lastclose(dev);

J
Jesse Barnes 已提交
1553
	if (dev_priv->agp_heap)
D
Dave Airlie 已提交
1554
		i915_mem_takedown(&(dev_priv->agp_heap));
J
Jesse Barnes 已提交
1555

D
Dave Airlie 已提交
1556
	i915_dma_cleanup(dev);
L
Linus Torvalds 已提交
1557 1558
}

1559
void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
L
Linus Torvalds 已提交
1560
{
J
Jesse Barnes 已提交
1561
	drm_i915_private_t *dev_priv = dev->dev_private;
1562
	i915_gem_release(dev, file_priv);
J
Jesse Barnes 已提交
1563 1564
	if (!drm_core_check_feature(dev, DRIVER_MODESET))
		i915_mem_release(dev, file_priv, dev_priv->agp_heap);
L
Linus Torvalds 已提交
1565 1566
}

1567 1568 1569 1570
void i915_driver_postclose(struct drm_device *dev, struct drm_file *file_priv)
{
	struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv;

1571
	kfree(i915_file_priv);
1572 1573
}

1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590
struct drm_ioctl_desc i915_ioctls[] = {
	DRM_IOCTL_DEF(DRM_I915_INIT, i915_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_I915_FLUSH, i915_flush_ioctl, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_FLIP, i915_flip_bufs, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_BATCHBUFFER, i915_batchbuffer, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_IRQ_EMIT, i915_irq_emit, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_GETPARAM, i915_getparam, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_I915_ALLOC, i915_mem_alloc, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_FREE, i915_mem_free, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_DESTROY_HEAP,  i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
	DRM_IOCTL_DEF(DRM_I915_SET_VBLANK_PIPE,  i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY ),
	DRM_IOCTL_DEF(DRM_I915_GET_VBLANK_PIPE,  i915_vblank_pipe_get, DRM_AUTH ),
	DRM_IOCTL_DEF(DRM_I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
1591
	DRM_IOCTL_DEF(DRM_I915_HWS_ADDR, i915_set_status_page, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1592
	DRM_IOCTL_DEF(DRM_I915_GEM_INIT, i915_gem_init_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1593 1594 1595 1596 1597
	DRM_IOCTL_DEF(DRM_I915_GEM_EXECBUFFER, i915_gem_execbuffer, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_GEM_PIN, i915_gem_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_I915_GEM_UNPIN, i915_gem_unpin_ioctl, DRM_AUTH|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH),
	DRM_IOCTL_DEF(DRM_I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH),
1598 1599
	DRM_IOCTL_DEF(DRM_I915_GEM_ENTERVT, i915_gem_entervt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
	DRM_IOCTL_DEF(DRM_I915_GEM_LEAVEVT, i915_gem_leavevt_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
1600 1601 1602 1603
	DRM_IOCTL_DEF(DRM_I915_GEM_CREATE, i915_gem_create_ioctl, 0),
	DRM_IOCTL_DEF(DRM_I915_GEM_PREAD, i915_gem_pread_ioctl, 0),
	DRM_IOCTL_DEF(DRM_I915_GEM_PWRITE, i915_gem_pwrite_ioctl, 0),
	DRM_IOCTL_DEF(DRM_I915_GEM_MMAP, i915_gem_mmap_ioctl, 0),
1604
	DRM_IOCTL_DEF(DRM_I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, 0),
1605 1606 1607 1608
	DRM_IOCTL_DEF(DRM_I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, 0),
	DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, 0),
	DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, 0),
	DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, 0),
1609
	DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, 0),
1610
	DRM_IOCTL_DEF(DRM_I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id, 0),
D
Dave Airlie 已提交
1611 1612 1613
};

int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625

/**
 * Determine if the device really is AGP or not.
 *
 * All Intel graphics chipsets are treated as AGP, even if they are really
 * PCI-e.
 *
 * \param dev   The device to be tested.
 *
 * \returns
 * A value of 1 is always retured to indictate every i9x5 is AGP.
 */
1626
int i915_driver_device_is_agp(struct drm_device * dev)
1627 1628 1629
{
	return 1;
}