1 /*
2  * Copyright 2008 Advanced Micro Devices, Inc.
3  * Copyright 2008 Red Hat Inc.
4  * Copyright 2009 Jerome Glisse.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22  * OTHER DEALINGS IN THE SOFTWARE.
23  *
24  * Authors: Dave Airlie
25  *          Alex Deucher
26  *          Jerome Glisse
27  */
28 
29 #include <linux/pci.h>
30 #include <linux/pm_runtime.h>
31 #include <linux/slab.h>
32 #include <linux/uaccess.h>
33 #include <linux/vga_switcheroo.h>
34 
35 #include <drm/drm_file.h>
36 #include <drm/drm_ioctl.h>
37 #include <drm/radeon_drm.h>
38 
39 #include "radeon.h"
40 #include "radeon_asic.h"
41 #include "radeon_drv.h"
42 #include "radeon_kms.h"
43 
44 #if defined(CONFIG_VGA_SWITCHEROO)
45 bool radeon_has_atpx(void);
46 #else
47 static inline bool radeon_has_atpx(void) { return false; }
48 #endif
49 
50 /**
51  * radeon_driver_unload_kms - Main unload function for KMS.
52  *
53  * @dev: drm dev pointer
54  *
55  * This is the main unload function for KMS (all asics).
56  * It calls radeon_modeset_fini() to tear down the
57  * displays, and radeon_device_fini() to tear down
58  * the rest of the device (CP, writeback, etc.).
59  * Returns 0 on success.
60  */
61 void radeon_driver_unload_kms(struct drm_device *dev)
62 {
63 	struct radeon_device *rdev = dev->dev_private;
64 
65 	if (rdev == NULL)
66 		return;
67 
68 	if (rdev->rmmio == NULL)
69 		goto done_free;
70 
71 	if (radeon_is_px(dev)) {
72 		pm_runtime_get_sync(dev->dev);
73 		pm_runtime_forbid(dev->dev);
74 	}
75 
76 	radeon_acpi_fini(rdev);
77 
78 	radeon_modeset_fini(rdev);
79 	radeon_device_fini(rdev);
80 
81 	if (rdev->agp)
82 		arch_phys_wc_del(rdev->agp->agp_mtrr);
83 	kfree(rdev->agp);
84 	rdev->agp = NULL;
85 
86 done_free:
87 	kfree(rdev);
88 	dev->dev_private = NULL;
89 }
90 
91 /**
92  * radeon_driver_load_kms - Main load function for KMS.
93  *
94  * @dev: drm dev pointer
95  * @flags: device flags
96  *
97  * This is the main load function for KMS (all asics).
98  * It calls radeon_device_init() to set up the non-display
99  * parts of the chip (asic init, CP, writeback, etc.), and
100  * radeon_modeset_init() to set up the display parts
101  * (crtcs, encoders, hotplug detect, etc.).
102  * Returns 0 on success, error on failure.
103  */
104 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
105 {
106 	struct pci_dev *pdev = to_pci_dev(dev->dev);
107 	struct radeon_device *rdev;
108 	int r, acpi_status;
109 
110 	rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
111 	if (rdev == NULL) {
112 		return -ENOMEM;
113 	}
114 	dev->dev_private = (void *)rdev;
115 
116 #ifdef __alpha__
117 	rdev->hose = pdev->sysdata;
118 #endif
119 
120 	if (pci_find_capability(pdev, PCI_CAP_ID_AGP))
121 		rdev->agp = radeon_agp_head_init(dev);
122 	if (rdev->agp) {
123 		rdev->agp->agp_mtrr = arch_phys_wc_add(
124 			rdev->agp->agp_info.aper_base,
125 			rdev->agp->agp_info.aper_size *
126 			1024 * 1024);
127 	}
128 
129 	/* update BUS flag */
130 	if (pci_find_capability(pdev, PCI_CAP_ID_AGP)) {
131 		flags |= RADEON_IS_AGP;
132 	} else if (pci_is_pcie(pdev)) {
133 		flags |= RADEON_IS_PCIE;
134 	} else {
135 		flags |= RADEON_IS_PCI;
136 	}
137 
138 	if ((radeon_runtime_pm != 0) &&
139 	    radeon_has_atpx() &&
140 	    ((flags & RADEON_IS_IGP) == 0) &&
141 	    !pci_is_thunderbolt_attached(pdev))
142 		flags |= RADEON_IS_PX;
143 
144 	/* radeon_device_init should report only fatal error
145 	 * like memory allocation failure or iomapping failure,
146 	 * or memory manager initialization failure, it must
147 	 * properly initialize the GPU MC controller and permit
148 	 * VRAM allocation
149 	 */
150 	r = radeon_device_init(rdev, dev, pdev, flags);
151 	if (r) {
152 		dev_err(dev->dev, "Fatal error during GPU init\n");
153 		goto out;
154 	}
155 
156 	/* Again modeset_init should fail only on fatal error
157 	 * otherwise it should provide enough functionalities
158 	 * for shadowfb to run
159 	 */
160 	r = radeon_modeset_init(rdev);
161 	if (r)
162 		dev_err(dev->dev, "Fatal error during modeset init\n");
163 
164 	/* Call ACPI methods: require modeset init
165 	 * but failure is not fatal
166 	 */
167 	if (!r) {
168 		acpi_status = radeon_acpi_init(rdev);
169 		if (acpi_status)
170 			dev_dbg(dev->dev, "Error during ACPI methods call\n");
171 	}
172 
173 	if (radeon_is_px(dev)) {
174 		dev_pm_set_driver_flags(dev->dev, DPM_FLAG_NO_DIRECT_COMPLETE);
175 		pm_runtime_use_autosuspend(dev->dev);
176 		pm_runtime_set_autosuspend_delay(dev->dev, 5000);
177 		pm_runtime_set_active(dev->dev);
178 		pm_runtime_allow(dev->dev);
179 		pm_runtime_mark_last_busy(dev->dev);
180 		pm_runtime_put_autosuspend(dev->dev);
181 	}
182 
183 out:
184 	if (r)
185 		radeon_driver_unload_kms(dev);
186 
187 
188 	return r;
189 }
190 
191 /**
192  * radeon_set_filp_rights - Set filp right.
193  *
194  * @dev: drm dev pointer
195  * @owner: drm file
196  * @applier: drm file
197  * @value: value
198  *
199  * Sets the filp rights for the device (all asics).
200  */
201 static void radeon_set_filp_rights(struct drm_device *dev,
202 				   struct drm_file **owner,
203 				   struct drm_file *applier,
204 				   uint32_t *value)
205 {
206 	struct radeon_device *rdev = dev->dev_private;
207 
208 	mutex_lock(&rdev->gem.mutex);
209 	if (*value == 1) {
210 		/* wants rights */
211 		if (!*owner)
212 			*owner = applier;
213 	} else if (*value == 0) {
214 		/* revokes rights */
215 		if (*owner == applier)
216 			*owner = NULL;
217 	}
218 	*value = *owner == applier ? 1 : 0;
219 	mutex_unlock(&rdev->gem.mutex);
220 }
221 
222 /*
223  * Userspace get information ioctl
224  */
225 /**
226  * radeon_info_ioctl - answer a device specific request.
227  *
228  * @dev: drm device pointer
229  * @data: request object
230  * @filp: drm filp
231  *
232  * This function is used to pass device specific parameters to the userspace
233  * drivers.  Examples include: pci device id, pipeline parms, tiling params,
234  * etc. (all asics).
235  * Returns 0 on success, -EINVAL on failure.
236  */
237 int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
238 {
239 	struct radeon_device *rdev = dev->dev_private;
240 	struct drm_radeon_info *info = data;
241 	struct radeon_mode_info *minfo = &rdev->mode_info;
242 	uint32_t *value, value_tmp, *value_ptr, value_size;
243 	struct ttm_resource_manager *man;
244 	uint64_t value64;
245 	struct drm_crtc *crtc;
246 	int i, found;
247 
248 	value_ptr = (uint32_t *)((unsigned long)info->value);
249 	value = &value_tmp;
250 	value_size = sizeof(uint32_t);
251 
252 	switch (info->request) {
253 	case RADEON_INFO_DEVICE_ID:
254 		*value = to_pci_dev(dev->dev)->device;
255 		break;
256 	case RADEON_INFO_NUM_GB_PIPES:
257 		*value = rdev->num_gb_pipes;
258 		break;
259 	case RADEON_INFO_NUM_Z_PIPES:
260 		*value = rdev->num_z_pipes;
261 		break;
262 	case RADEON_INFO_ACCEL_WORKING:
263 		/* xf86-video-ati 6.13.0 relies on this being false for evergreen */
264 		if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK))
265 			*value = false;
266 		else
267 			*value = rdev->accel_working;
268 		break;
269 	case RADEON_INFO_CRTC_FROM_ID:
270 		if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
271 			DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
272 			return -EFAULT;
273 		}
274 		for (i = 0, found = 0; i < rdev->num_crtc; i++) {
275 			crtc = (struct drm_crtc *)minfo->crtcs[i];
276 			if (crtc && crtc->base.id == *value) {
277 				struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
278 				*value = radeon_crtc->crtc_id;
279 				found = 1;
280 				break;
281 			}
282 		}
283 		if (!found) {
284 			DRM_DEBUG_KMS("unknown crtc id %d\n", *value);
285 			return -EINVAL;
286 		}
287 		break;
288 	case RADEON_INFO_ACCEL_WORKING2:
289 		if (rdev->family == CHIP_HAWAII) {
290 			if (rdev->accel_working) {
291 				if (rdev->new_fw)
292 					*value = 3;
293 				else
294 					*value = 2;
295 			} else {
296 				*value = 0;
297 			}
298 		} else {
299 			*value = rdev->accel_working;
300 		}
301 		break;
302 	case RADEON_INFO_TILING_CONFIG:
303 		if (rdev->family >= CHIP_BONAIRE)
304 			*value = rdev->config.cik.tile_config;
305 		else if (rdev->family >= CHIP_TAHITI)
306 			*value = rdev->config.si.tile_config;
307 		else if (rdev->family >= CHIP_CAYMAN)
308 			*value = rdev->config.cayman.tile_config;
309 		else if (rdev->family >= CHIP_CEDAR)
310 			*value = rdev->config.evergreen.tile_config;
311 		else if (rdev->family >= CHIP_RV770)
312 			*value = rdev->config.rv770.tile_config;
313 		else if (rdev->family >= CHIP_R600)
314 			*value = rdev->config.r600.tile_config;
315 		else {
316 			DRM_DEBUG_KMS("tiling config is r6xx+ only!\n");
317 			return -EINVAL;
318 		}
319 		break;
320 	case RADEON_INFO_WANT_HYPERZ:
321 		/* The "value" here is both an input and output parameter.
322 		 * If the input value is 1, filp requests hyper-z access.
323 		 * If the input value is 0, filp revokes its hyper-z access.
324 		 *
325 		 * When returning, the value is 1 if filp owns hyper-z access,
326 		 * 0 otherwise. */
327 		if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
328 			DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
329 			return -EFAULT;
330 		}
331 		if (*value >= 2) {
332 			DRM_DEBUG_KMS("WANT_HYPERZ: invalid value %d\n", *value);
333 			return -EINVAL;
334 		}
335 		radeon_set_filp_rights(dev, &rdev->hyperz_filp, filp, value);
336 		break;
337 	case RADEON_INFO_WANT_CMASK:
338 		/* The same logic as Hyper-Z. */
339 		if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
340 			DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
341 			return -EFAULT;
342 		}
343 		if (*value >= 2) {
344 			DRM_DEBUG_KMS("WANT_CMASK: invalid value %d\n", *value);
345 			return -EINVAL;
346 		}
347 		radeon_set_filp_rights(dev, &rdev->cmask_filp, filp, value);
348 		break;
349 	case RADEON_INFO_CLOCK_CRYSTAL_FREQ:
350 		/* return clock value in KHz */
351 		if (rdev->asic->get_xclk)
352 			*value = radeon_get_xclk(rdev) * 10;
353 		else
354 			*value = rdev->clock.spll.reference_freq * 10;
355 		break;
356 	case RADEON_INFO_NUM_BACKENDS:
357 		if (rdev->family >= CHIP_BONAIRE)
358 			*value = rdev->config.cik.max_backends_per_se *
359 				rdev->config.cik.max_shader_engines;
360 		else if (rdev->family >= CHIP_TAHITI)
361 			*value = rdev->config.si.max_backends_per_se *
362 				rdev->config.si.max_shader_engines;
363 		else if (rdev->family >= CHIP_CAYMAN)
364 			*value = rdev->config.cayman.max_backends_per_se *
365 				rdev->config.cayman.max_shader_engines;
366 		else if (rdev->family >= CHIP_CEDAR)
367 			*value = rdev->config.evergreen.max_backends;
368 		else if (rdev->family >= CHIP_RV770)
369 			*value = rdev->config.rv770.max_backends;
370 		else if (rdev->family >= CHIP_R600)
371 			*value = rdev->config.r600.max_backends;
372 		else {
373 			return -EINVAL;
374 		}
375 		break;
376 	case RADEON_INFO_NUM_TILE_PIPES:
377 		if (rdev->family >= CHIP_BONAIRE)
378 			*value = rdev->config.cik.max_tile_pipes;
379 		else if (rdev->family >= CHIP_TAHITI)
380 			*value = rdev->config.si.max_tile_pipes;
381 		else if (rdev->family >= CHIP_CAYMAN)
382 			*value = rdev->config.cayman.max_tile_pipes;
383 		else if (rdev->family >= CHIP_CEDAR)
384 			*value = rdev->config.evergreen.max_tile_pipes;
385 		else if (rdev->family >= CHIP_RV770)
386 			*value = rdev->config.rv770.max_tile_pipes;
387 		else if (rdev->family >= CHIP_R600)
388 			*value = rdev->config.r600.max_tile_pipes;
389 		else {
390 			return -EINVAL;
391 		}
392 		break;
393 	case RADEON_INFO_FUSION_GART_WORKING:
394 		*value = 1;
395 		break;
396 	case RADEON_INFO_BACKEND_MAP:
397 		if (rdev->family >= CHIP_BONAIRE)
398 			*value = rdev->config.cik.backend_map;
399 		else if (rdev->family >= CHIP_TAHITI)
400 			*value = rdev->config.si.backend_map;
401 		else if (rdev->family >= CHIP_CAYMAN)
402 			*value = rdev->config.cayman.backend_map;
403 		else if (rdev->family >= CHIP_CEDAR)
404 			*value = rdev->config.evergreen.backend_map;
405 		else if (rdev->family >= CHIP_RV770)
406 			*value = rdev->config.rv770.backend_map;
407 		else if (rdev->family >= CHIP_R600)
408 			*value = rdev->config.r600.backend_map;
409 		else {
410 			return -EINVAL;
411 		}
412 		break;
413 	case RADEON_INFO_VA_START:
414 		/* this is where we report if vm is supported or not */
415 		if (rdev->family < CHIP_CAYMAN)
416 			return -EINVAL;
417 		*value = RADEON_VA_RESERVED_SIZE;
418 		break;
419 	case RADEON_INFO_IB_VM_MAX_SIZE:
420 		/* this is where we report if vm is supported or not */
421 		if (rdev->family < CHIP_CAYMAN)
422 			return -EINVAL;
423 		*value = RADEON_IB_VM_MAX_SIZE;
424 		break;
425 	case RADEON_INFO_MAX_PIPES:
426 		if (rdev->family >= CHIP_BONAIRE)
427 			*value = rdev->config.cik.max_cu_per_sh;
428 		else if (rdev->family >= CHIP_TAHITI)
429 			*value = rdev->config.si.max_cu_per_sh;
430 		else if (rdev->family >= CHIP_CAYMAN)
431 			*value = rdev->config.cayman.max_pipes_per_simd;
432 		else if (rdev->family >= CHIP_CEDAR)
433 			*value = rdev->config.evergreen.max_pipes;
434 		else if (rdev->family >= CHIP_RV770)
435 			*value = rdev->config.rv770.max_pipes;
436 		else if (rdev->family >= CHIP_R600)
437 			*value = rdev->config.r600.max_pipes;
438 		else {
439 			return -EINVAL;
440 		}
441 		break;
442 	case RADEON_INFO_TIMESTAMP:
443 		if (rdev->family < CHIP_R600) {
444 			DRM_DEBUG_KMS("timestamp is r6xx+ only!\n");
445 			return -EINVAL;
446 		}
447 		value = (uint32_t *)&value64;
448 		value_size = sizeof(uint64_t);
449 		value64 = radeon_get_gpu_clock_counter(rdev);
450 		break;
451 	case RADEON_INFO_MAX_SE:
452 		if (rdev->family >= CHIP_BONAIRE)
453 			*value = rdev->config.cik.max_shader_engines;
454 		else if (rdev->family >= CHIP_TAHITI)
455 			*value = rdev->config.si.max_shader_engines;
456 		else if (rdev->family >= CHIP_CAYMAN)
457 			*value = rdev->config.cayman.max_shader_engines;
458 		else if (rdev->family >= CHIP_CEDAR)
459 			*value = rdev->config.evergreen.num_ses;
460 		else
461 			*value = 1;
462 		break;
463 	case RADEON_INFO_MAX_SH_PER_SE:
464 		if (rdev->family >= CHIP_BONAIRE)
465 			*value = rdev->config.cik.max_sh_per_se;
466 		else if (rdev->family >= CHIP_TAHITI)
467 			*value = rdev->config.si.max_sh_per_se;
468 		else
469 			return -EINVAL;
470 		break;
471 	case RADEON_INFO_FASTFB_WORKING:
472 		*value = rdev->fastfb_working;
473 		break;
474 	case RADEON_INFO_RING_WORKING:
475 		if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
476 			DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
477 			return -EFAULT;
478 		}
479 		switch (*value) {
480 		case RADEON_CS_RING_GFX:
481 		case RADEON_CS_RING_COMPUTE:
482 			*value = rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready;
483 			break;
484 		case RADEON_CS_RING_DMA:
485 			*value = rdev->ring[R600_RING_TYPE_DMA_INDEX].ready;
486 			*value |= rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready;
487 			break;
488 		case RADEON_CS_RING_UVD:
489 			*value = rdev->ring[R600_RING_TYPE_UVD_INDEX].ready;
490 			break;
491 		case RADEON_CS_RING_VCE:
492 			*value = rdev->ring[TN_RING_TYPE_VCE1_INDEX].ready;
493 			break;
494 		default:
495 			return -EINVAL;
496 		}
497 		break;
498 	case RADEON_INFO_SI_TILE_MODE_ARRAY:
499 		if (rdev->family >= CHIP_BONAIRE) {
500 			value = rdev->config.cik.tile_mode_array;
501 			value_size = sizeof(uint32_t)*32;
502 		} else if (rdev->family >= CHIP_TAHITI) {
503 			value = rdev->config.si.tile_mode_array;
504 			value_size = sizeof(uint32_t)*32;
505 		} else {
506 			DRM_DEBUG_KMS("tile mode array is si+ only!\n");
507 			return -EINVAL;
508 		}
509 		break;
510 	case RADEON_INFO_CIK_MACROTILE_MODE_ARRAY:
511 		if (rdev->family >= CHIP_BONAIRE) {
512 			value = rdev->config.cik.macrotile_mode_array;
513 			value_size = sizeof(uint32_t)*16;
514 		} else {
515 			DRM_DEBUG_KMS("macrotile mode array is cik+ only!\n");
516 			return -EINVAL;
517 		}
518 		break;
519 	case RADEON_INFO_SI_CP_DMA_COMPUTE:
520 		*value = 1;
521 		break;
522 	case RADEON_INFO_SI_BACKEND_ENABLED_MASK:
523 		if (rdev->family >= CHIP_BONAIRE) {
524 			*value = rdev->config.cik.backend_enable_mask;
525 		} else if (rdev->family >= CHIP_TAHITI) {
526 			*value = rdev->config.si.backend_enable_mask;
527 		} else {
528 			DRM_DEBUG_KMS("BACKEND_ENABLED_MASK is si+ only!\n");
529 			return -EINVAL;
530 		}
531 		break;
532 	case RADEON_INFO_MAX_SCLK:
533 		if ((rdev->pm.pm_method == PM_METHOD_DPM) &&
534 		    rdev->pm.dpm_enabled)
535 			*value = rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10;
536 		else
537 			*value = rdev->pm.default_sclk * 10;
538 		break;
539 	case RADEON_INFO_VCE_FW_VERSION:
540 		*value = rdev->vce.fw_version;
541 		break;
542 	case RADEON_INFO_VCE_FB_VERSION:
543 		*value = rdev->vce.fb_version;
544 		break;
545 	case RADEON_INFO_NUM_BYTES_MOVED:
546 		value = (uint32_t *)&value64;
547 		value_size = sizeof(uint64_t);
548 		value64 = atomic64_read(&rdev->num_bytes_moved);
549 		break;
550 	case RADEON_INFO_VRAM_USAGE:
551 		value = (uint32_t *)&value64;
552 		value_size = sizeof(uint64_t);
553 		man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_VRAM);
554 		value64 = ttm_resource_manager_usage(man);
555 		break;
556 	case RADEON_INFO_GTT_USAGE:
557 		value = (uint32_t *)&value64;
558 		value_size = sizeof(uint64_t);
559 		man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_TT);
560 		value64 = ttm_resource_manager_usage(man);
561 		break;
562 	case RADEON_INFO_ACTIVE_CU_COUNT:
563 		if (rdev->family >= CHIP_BONAIRE)
564 			*value = rdev->config.cik.active_cus;
565 		else if (rdev->family >= CHIP_TAHITI)
566 			*value = rdev->config.si.active_cus;
567 		else if (rdev->family >= CHIP_CAYMAN)
568 			*value = rdev->config.cayman.active_simds;
569 		else if (rdev->family >= CHIP_CEDAR)
570 			*value = rdev->config.evergreen.active_simds;
571 		else if (rdev->family >= CHIP_RV770)
572 			*value = rdev->config.rv770.active_simds;
573 		else if (rdev->family >= CHIP_R600)
574 			*value = rdev->config.r600.active_simds;
575 		else
576 			*value = 1;
577 		break;
578 	case RADEON_INFO_CURRENT_GPU_TEMP:
579 		/* get temperature in millidegrees C */
580 		if (rdev->asic->pm.get_temperature)
581 			*value = radeon_get_temperature(rdev);
582 		else
583 			*value = 0;
584 		break;
585 	case RADEON_INFO_CURRENT_GPU_SCLK:
586 		/* get sclk in Mhz */
587 		if (rdev->pm.dpm_enabled)
588 			*value = radeon_dpm_get_current_sclk(rdev) / 100;
589 		else
590 			*value = rdev->pm.current_sclk / 100;
591 		break;
592 	case RADEON_INFO_CURRENT_GPU_MCLK:
593 		/* get mclk in Mhz */
594 		if (rdev->pm.dpm_enabled)
595 			*value = radeon_dpm_get_current_mclk(rdev) / 100;
596 		else
597 			*value = rdev->pm.current_mclk / 100;
598 		break;
599 	case RADEON_INFO_READ_REG:
600 		if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
601 			DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
602 			return -EFAULT;
603 		}
604 		if (radeon_get_allowed_info_register(rdev, *value, value))
605 			return -EINVAL;
606 		break;
607 	case RADEON_INFO_VA_UNMAP_WORKING:
608 		*value = true;
609 		break;
610 	case RADEON_INFO_GPU_RESET_COUNTER:
611 		*value = atomic_read(&rdev->gpu_reset_counter);
612 		break;
613 	default:
614 		DRM_DEBUG_KMS("Invalid request %d\n", info->request);
615 		return -EINVAL;
616 	}
617 	if (copy_to_user(value_ptr, (char *)value, value_size)) {
618 		DRM_ERROR("copy_to_user %s:%u\n", __func__, __LINE__);
619 		return -EFAULT;
620 	}
621 	return 0;
622 }
623 
624 /**
625  * radeon_driver_open_kms - drm callback for open
626  *
627  * @dev: drm dev pointer
628  * @file_priv: drm file
629  *
630  * On device open, init vm on cayman+ (all asics).
631  * Returns 0 on success, error on failure.
632  */
633 int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
634 {
635 	struct radeon_device *rdev = dev->dev_private;
636 	struct radeon_fpriv *fpriv;
637 	struct radeon_vm *vm;
638 	int r;
639 
640 	file_priv->driver_priv = NULL;
641 
642 	r = pm_runtime_get_sync(dev->dev);
643 	if (r < 0) {
644 		pm_runtime_put_autosuspend(dev->dev);
645 		return r;
646 	}
647 
648 	/* new gpu have virtual address space support */
649 	if (rdev->family >= CHIP_CAYMAN) {
650 
651 		fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
652 		if (unlikely(!fpriv)) {
653 			r = -ENOMEM;
654 			goto err_suspend;
655 		}
656 
657 		if (rdev->accel_working) {
658 			vm = &fpriv->vm;
659 			r = radeon_vm_init(rdev, vm);
660 			if (r)
661 				goto err_fpriv;
662 
663 			r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
664 			if (r)
665 				goto err_vm_fini;
666 
667 			/* map the ib pool buffer read only into
668 			 * virtual address space */
669 			vm->ib_bo_va = radeon_vm_bo_add(rdev, vm,
670 							rdev->ring_tmp_bo.bo);
671 			if (!vm->ib_bo_va) {
672 				r = -ENOMEM;
673 				goto err_vm_fini;
674 			}
675 
676 			r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
677 						  RADEON_VA_IB_OFFSET,
678 						  RADEON_VM_PAGE_READABLE |
679 						  RADEON_VM_PAGE_SNOOPED);
680 			if (r)
681 				goto err_vm_fini;
682 		}
683 		file_priv->driver_priv = fpriv;
684 	}
685 
686 	pm_runtime_mark_last_busy(dev->dev);
687 	pm_runtime_put_autosuspend(dev->dev);
688 	return 0;
689 
690 err_vm_fini:
691 	radeon_vm_fini(rdev, vm);
692 err_fpriv:
693 	kfree(fpriv);
694 
695 err_suspend:
696 	pm_runtime_mark_last_busy(dev->dev);
697 	pm_runtime_put_autosuspend(dev->dev);
698 	return r;
699 }
700 
701 /**
702  * radeon_driver_postclose_kms - drm callback for post close
703  *
704  * @dev: drm dev pointer
705  * @file_priv: drm file
706  *
707  * On device close, tear down hyperz and cmask filps on r1xx-r5xx
708  * (all asics).  And tear down vm on cayman+ (all asics).
709  */
710 void radeon_driver_postclose_kms(struct drm_device *dev,
711 				 struct drm_file *file_priv)
712 {
713 	struct radeon_device *rdev = dev->dev_private;
714 
715 	pm_runtime_get_sync(dev->dev);
716 
717 	mutex_lock(&rdev->gem.mutex);
718 	if (rdev->hyperz_filp == file_priv)
719 		rdev->hyperz_filp = NULL;
720 	if (rdev->cmask_filp == file_priv)
721 		rdev->cmask_filp = NULL;
722 	mutex_unlock(&rdev->gem.mutex);
723 
724 	radeon_uvd_free_handles(rdev, file_priv);
725 	radeon_vce_free_handles(rdev, file_priv);
726 
727 	/* new gpu have virtual address space support */
728 	if (rdev->family >= CHIP_CAYMAN && file_priv->driver_priv) {
729 		struct radeon_fpriv *fpriv = file_priv->driver_priv;
730 		struct radeon_vm *vm = &fpriv->vm;
731 		int r;
732 
733 		if (rdev->accel_working) {
734 			r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
735 			if (!r) {
736 				if (vm->ib_bo_va)
737 					radeon_vm_bo_rmv(rdev, vm->ib_bo_va);
738 				radeon_bo_unreserve(rdev->ring_tmp_bo.bo);
739 			}
740 			radeon_vm_fini(rdev, vm);
741 		}
742 
743 		kfree(fpriv);
744 		file_priv->driver_priv = NULL;
745 	}
746 	pm_runtime_mark_last_busy(dev->dev);
747 	pm_runtime_put_autosuspend(dev->dev);
748 }
749 
750 /*
751  * VBlank related functions.
752  */
753 /**
754  * radeon_get_vblank_counter_kms - get frame count
755  *
756  * @crtc: crtc to get the frame count from
757  *
758  * Gets the frame count on the requested crtc (all asics).
759  * Returns frame count on success, -EINVAL on failure.
760  */
761 u32 radeon_get_vblank_counter_kms(struct drm_crtc *crtc)
762 {
763 	struct drm_device *dev = crtc->dev;
764 	unsigned int pipe = crtc->index;
765 	int vpos, hpos, stat;
766 	u32 count;
767 	struct radeon_device *rdev = dev->dev_private;
768 
769 	if (pipe >= rdev->num_crtc) {
770 		DRM_ERROR("Invalid crtc %u\n", pipe);
771 		return -EINVAL;
772 	}
773 
774 	/* The hw increments its frame counter at start of vsync, not at start
775 	 * of vblank, as is required by DRM core vblank counter handling.
776 	 * Cook the hw count here to make it appear to the caller as if it
777 	 * incremented at start of vblank. We measure distance to start of
778 	 * vblank in vpos. vpos therefore will be >= 0 between start of vblank
779 	 * and start of vsync, so vpos >= 0 means to bump the hw frame counter
780 	 * result by 1 to give the proper appearance to caller.
781 	 */
782 	if (rdev->mode_info.crtcs[pipe]) {
783 		/* Repeat readout if needed to provide stable result if
784 		 * we cross start of vsync during the queries.
785 		 */
786 		do {
787 			count = radeon_get_vblank_counter(rdev, pipe);
788 			/* Ask radeon_get_crtc_scanoutpos to return vpos as
789 			 * distance to start of vblank, instead of regular
790 			 * vertical scanout pos.
791 			 */
792 			stat = radeon_get_crtc_scanoutpos(
793 				dev, pipe, GET_DISTANCE_TO_VBLANKSTART,
794 				&vpos, &hpos, NULL, NULL,
795 				&rdev->mode_info.crtcs[pipe]->base.hwmode);
796 		} while (count != radeon_get_vblank_counter(rdev, pipe));
797 
798 		if (((stat & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE)) !=
799 		    (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE))) {
800 			DRM_DEBUG_VBL("Query failed! stat %d\n", stat);
801 		}
802 		else {
803 			DRM_DEBUG_VBL("crtc %u: dist from vblank start %d\n",
804 				      pipe, vpos);
805 
806 			/* Bump counter if we are at >= leading edge of vblank,
807 			 * but before vsync where vpos would turn negative and
808 			 * the hw counter really increments.
809 			 */
810 			if (vpos >= 0)
811 				count++;
812 		}
813 	}
814 	else {
815 	    /* Fallback to use value as is. */
816 	    count = radeon_get_vblank_counter(rdev, pipe);
817 	    DRM_DEBUG_VBL("NULL mode info! Returned count may be wrong.\n");
818 	}
819 
820 	return count;
821 }
822 
823 /**
824  * radeon_enable_vblank_kms - enable vblank interrupt
825  *
826  * @crtc: crtc to enable vblank interrupt for
827  *
828  * Enable the interrupt on the requested crtc (all asics).
829  * Returns 0 on success, -EINVAL on failure.
830  */
831 int radeon_enable_vblank_kms(struct drm_crtc *crtc)
832 {
833 	struct drm_device *dev = crtc->dev;
834 	unsigned int pipe = crtc->index;
835 	struct radeon_device *rdev = dev->dev_private;
836 	unsigned long irqflags;
837 	int r;
838 
839 	if (pipe >= rdev->num_crtc) {
840 		DRM_ERROR("Invalid crtc %d\n", pipe);
841 		return -EINVAL;
842 	}
843 
844 	spin_lock_irqsave(&rdev->irq.lock, irqflags);
845 	rdev->irq.crtc_vblank_int[pipe] = true;
846 	r = radeon_irq_set(rdev);
847 	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
848 	return r;
849 }
850 
851 /**
852  * radeon_disable_vblank_kms - disable vblank interrupt
853  *
854  * @crtc: crtc to disable vblank interrupt for
855  *
856  * Disable the interrupt on the requested crtc (all asics).
857  */
858 void radeon_disable_vblank_kms(struct drm_crtc *crtc)
859 {
860 	struct drm_device *dev = crtc->dev;
861 	unsigned int pipe = crtc->index;
862 	struct radeon_device *rdev = dev->dev_private;
863 	unsigned long irqflags;
864 
865 	if (pipe >= rdev->num_crtc) {
866 		DRM_ERROR("Invalid crtc %d\n", pipe);
867 		return;
868 	}
869 
870 	spin_lock_irqsave(&rdev->irq.lock, irqflags);
871 	rdev->irq.crtc_vblank_int[pipe] = false;
872 	radeon_irq_set(rdev);
873 	spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
874 }
875