1 /*
2 * Copyright 2007-8 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Authors: Dave Airlie
24 * Alex Deucher
25 */
26
27 #include <linux/pci.h>
28 #include <linux/pm_runtime.h>
29 #include <linux/gcd.h>
30
31 #include <asm/div64.h>
32
33 #include <drm/drm_crtc_helper.h>
34 #include <drm/drm_device.h>
35 #include <drm/drm_drv.h>
36 #include <drm/drm_edid.h>
37 #include <drm/drm_fb_helper.h>
38 #include <drm/drm_fourcc.h>
39 #include <drm/drm_framebuffer.h>
40 #include <drm/drm_gem_framebuffer_helper.h>
41 #include <drm/drm_probe_helper.h>
42 #include <drm/drm_vblank.h>
43 #include <drm/radeon_drm.h>
44
45 #include "atom.h"
46 #include "radeon.h"
47 #include "radeon_kms.h"
48
avivo_crtc_load_lut(struct drm_crtc * crtc)49 static void avivo_crtc_load_lut(struct drm_crtc *crtc)
50 {
51 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
52 struct drm_device *dev = crtc->dev;
53 struct radeon_device *rdev = dev->dev_private;
54 u16 *r, *g, *b;
55 int i;
56
57 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
58 WREG32(AVIVO_DC_LUTA_CONTROL + radeon_crtc->crtc_offset, 0);
59
60 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
61 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
62 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
63
64 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
65 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
66 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
67
68 WREG32(AVIVO_DC_LUT_RW_SELECT, radeon_crtc->crtc_id);
69 WREG32(AVIVO_DC_LUT_RW_MODE, 0);
70 WREG32(AVIVO_DC_LUT_WRITE_EN_MASK, 0x0000003f);
71
72 WREG8(AVIVO_DC_LUT_RW_INDEX, 0);
73 r = crtc->gamma_store;
74 g = r + crtc->gamma_size;
75 b = g + crtc->gamma_size;
76 for (i = 0; i < 256; i++) {
77 WREG32(AVIVO_DC_LUT_30_COLOR,
78 ((*r++ & 0xffc0) << 14) |
79 ((*g++ & 0xffc0) << 4) |
80 (*b++ >> 6));
81 }
82
83 /* Only change bit 0 of LUT_SEL, other bits are set elsewhere */
84 WREG32_P(AVIVO_D1GRPH_LUT_SEL + radeon_crtc->crtc_offset, radeon_crtc->crtc_id, ~1);
85 }
86
dce4_crtc_load_lut(struct drm_crtc * crtc)87 static void dce4_crtc_load_lut(struct drm_crtc *crtc)
88 {
89 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
90 struct drm_device *dev = crtc->dev;
91 struct radeon_device *rdev = dev->dev_private;
92 u16 *r, *g, *b;
93 int i;
94
95 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
96 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
97
98 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
99 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
100 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
101
102 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
103 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
104 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
105
106 WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
107 WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
108
109 WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
110 r = crtc->gamma_store;
111 g = r + crtc->gamma_size;
112 b = g + crtc->gamma_size;
113 for (i = 0; i < 256; i++) {
114 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
115 ((*r++ & 0xffc0) << 14) |
116 ((*g++ & 0xffc0) << 4) |
117 (*b++ >> 6));
118 }
119 }
120
dce5_crtc_load_lut(struct drm_crtc * crtc)121 static void dce5_crtc_load_lut(struct drm_crtc *crtc)
122 {
123 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
124 struct drm_device *dev = crtc->dev;
125 struct radeon_device *rdev = dev->dev_private;
126 u16 *r, *g, *b;
127 int i;
128
129 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
130
131 msleep(10);
132
133 WREG32(NI_INPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
134 (NI_INPUT_CSC_GRPH_MODE(NI_INPUT_CSC_BYPASS) |
135 NI_INPUT_CSC_OVL_MODE(NI_INPUT_CSC_BYPASS)));
136 WREG32(NI_PRESCALE_GRPH_CONTROL + radeon_crtc->crtc_offset,
137 NI_GRPH_PRESCALE_BYPASS);
138 WREG32(NI_PRESCALE_OVL_CONTROL + radeon_crtc->crtc_offset,
139 NI_OVL_PRESCALE_BYPASS);
140 WREG32(NI_INPUT_GAMMA_CONTROL + radeon_crtc->crtc_offset,
141 (NI_GRPH_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT) |
142 NI_OVL_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT)));
143
144 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
145
146 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
147 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
148 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
149
150 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
151 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
152 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
153
154 WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
155 WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
156
157 WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
158 r = crtc->gamma_store;
159 g = r + crtc->gamma_size;
160 b = g + crtc->gamma_size;
161 for (i = 0; i < 256; i++) {
162 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
163 ((*r++ & 0xffc0) << 14) |
164 ((*g++ & 0xffc0) << 4) |
165 (*b++ >> 6));
166 }
167
168 WREG32(NI_DEGAMMA_CONTROL + radeon_crtc->crtc_offset,
169 (NI_GRPH_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
170 NI_OVL_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
171 NI_ICON_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
172 NI_CURSOR_DEGAMMA_MODE(NI_DEGAMMA_BYPASS)));
173 WREG32(NI_GAMUT_REMAP_CONTROL + radeon_crtc->crtc_offset,
174 (NI_GRPH_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS) |
175 NI_OVL_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS)));
176 WREG32(NI_REGAMMA_CONTROL + radeon_crtc->crtc_offset,
177 (NI_GRPH_REGAMMA_MODE(NI_REGAMMA_BYPASS) |
178 NI_OVL_REGAMMA_MODE(NI_REGAMMA_BYPASS)));
179 WREG32(NI_OUTPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
180 (NI_OUTPUT_CSC_GRPH_MODE(radeon_crtc->output_csc) |
181 NI_OUTPUT_CSC_OVL_MODE(NI_OUTPUT_CSC_BYPASS)));
182 /* XXX match this to the depth of the crtc fmt block, move to modeset? */
183 WREG32(0x6940 + radeon_crtc->crtc_offset, 0);
184 if (ASIC_IS_DCE8(rdev)) {
185 /* XXX this only needs to be programmed once per crtc at startup,
186 * not sure where the best place for it is
187 */
188 WREG32(CIK_ALPHA_CONTROL + radeon_crtc->crtc_offset,
189 CIK_CURSOR_ALPHA_BLND_ENA);
190 }
191 }
192
legacy_crtc_load_lut(struct drm_crtc * crtc)193 static void legacy_crtc_load_lut(struct drm_crtc *crtc)
194 {
195 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
196 struct drm_device *dev = crtc->dev;
197 struct radeon_device *rdev = dev->dev_private;
198 u16 *r, *g, *b;
199 int i;
200 uint32_t dac2_cntl;
201
202 dac2_cntl = RREG32(RADEON_DAC_CNTL2);
203 if (radeon_crtc->crtc_id == 0)
204 dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL;
205 else
206 dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL;
207 WREG32(RADEON_DAC_CNTL2, dac2_cntl);
208
209 WREG8(RADEON_PALETTE_INDEX, 0);
210 r = crtc->gamma_store;
211 g = r + crtc->gamma_size;
212 b = g + crtc->gamma_size;
213 for (i = 0; i < 256; i++) {
214 WREG32(RADEON_PALETTE_30_DATA,
215 ((*r++ & 0xffc0) << 14) |
216 ((*g++ & 0xffc0) << 4) |
217 (*b++ >> 6));
218 }
219 }
220
radeon_crtc_load_lut(struct drm_crtc * crtc)221 void radeon_crtc_load_lut(struct drm_crtc *crtc)
222 {
223 struct drm_device *dev = crtc->dev;
224 struct radeon_device *rdev = dev->dev_private;
225
226 if (!crtc->enabled)
227 return;
228
229 if (ASIC_IS_DCE5(rdev))
230 dce5_crtc_load_lut(crtc);
231 else if (ASIC_IS_DCE4(rdev))
232 dce4_crtc_load_lut(crtc);
233 else if (ASIC_IS_AVIVO(rdev))
234 avivo_crtc_load_lut(crtc);
235 else
236 legacy_crtc_load_lut(crtc);
237 }
238
radeon_crtc_gamma_set(struct drm_crtc * crtc,u16 * red,u16 * green,u16 * blue,uint32_t size,struct drm_modeset_acquire_ctx * ctx)239 static int radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
240 u16 *blue, uint32_t size,
241 struct drm_modeset_acquire_ctx *ctx)
242 {
243 radeon_crtc_load_lut(crtc);
244
245 return 0;
246 }
247
radeon_crtc_destroy(struct drm_crtc * crtc)248 static void radeon_crtc_destroy(struct drm_crtc *crtc)
249 {
250 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
251
252 drm_crtc_cleanup(crtc);
253 destroy_workqueue(radeon_crtc->flip_queue);
254 kfree(radeon_crtc);
255 }
256
257 /**
258 * radeon_unpin_work_func - unpin old buffer object
259 *
260 * @__work: kernel work item
261 *
262 * Unpin the old frame buffer object outside of the interrupt handler
263 */
radeon_unpin_work_func(struct work_struct * __work)264 static void radeon_unpin_work_func(struct work_struct *__work)
265 {
266 struct radeon_flip_work *work =
267 container_of(__work, struct radeon_flip_work, unpin_work);
268 int r;
269
270 /* unpin of the old buffer */
271 r = radeon_bo_reserve(work->old_rbo, false);
272 if (likely(r == 0)) {
273 radeon_bo_unpin(work->old_rbo);
274 radeon_bo_unreserve(work->old_rbo);
275 } else
276 DRM_ERROR("failed to reserve buffer after flip\n");
277
278 drm_gem_object_put(&work->old_rbo->tbo.base);
279 kfree(work);
280 }
281
radeon_crtc_handle_vblank(struct radeon_device * rdev,int crtc_id)282 void radeon_crtc_handle_vblank(struct radeon_device *rdev, int crtc_id)
283 {
284 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
285 unsigned long flags;
286 u32 update_pending;
287 int vpos, hpos;
288
289 /* can happen during initialization */
290 if (radeon_crtc == NULL)
291 return;
292
293 /* Skip the pageflip completion check below (based on polling) on
294 * asics which reliably support hw pageflip completion irqs. pflip
295 * irqs are a reliable and race-free method of handling pageflip
296 * completion detection. A use_pflipirq module parameter < 2 allows
297 * to override this in case of asics with faulty pflip irqs.
298 * A module parameter of 0 would only use this polling based path,
299 * a parameter of 1 would use pflip irq only as a backup to this
300 * path, as in Linux 3.16.
301 */
302 if ((radeon_use_pflipirq == 2) && ASIC_IS_DCE4(rdev))
303 return;
304
305 spin_lock_irqsave(&rdev->ddev->event_lock, flags);
306 if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
307 DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
308 "RADEON_FLIP_SUBMITTED(%d)\n",
309 radeon_crtc->flip_status,
310 RADEON_FLIP_SUBMITTED);
311 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
312 return;
313 }
314
315 update_pending = radeon_page_flip_pending(rdev, crtc_id);
316
317 /* Has the pageflip already completed in crtc, or is it certain
318 * to complete in this vblank? GET_DISTANCE_TO_VBLANKSTART provides
319 * distance to start of "fudged earlier" vblank in vpos, distance to
320 * start of real vblank in hpos. vpos >= 0 && hpos < 0 means we are in
321 * the last few scanlines before start of real vblank, where the vblank
322 * irq can fire, so we have sampled update_pending a bit too early and
323 * know the flip will complete at leading edge of the upcoming real
324 * vblank. On pre-AVIVO hardware, flips also complete inside the real
325 * vblank, not only at leading edge, so if update_pending for hpos >= 0
326 * == inside real vblank, the flip will complete almost immediately.
327 * Note that this method of completion handling is still not 100% race
328 * free, as we could execute before the radeon_flip_work_func managed
329 * to run and set the RADEON_FLIP_SUBMITTED status, thereby we no-op,
330 * but the flip still gets programmed into hw and completed during
331 * vblank, leading to a delayed emission of the flip completion event.
332 * This applies at least to pre-AVIVO hardware, where flips are always
333 * completing inside vblank, not only at leading edge of vblank.
334 */
335 if (update_pending &&
336 (DRM_SCANOUTPOS_VALID &
337 radeon_get_crtc_scanoutpos(rdev->ddev, crtc_id,
338 GET_DISTANCE_TO_VBLANKSTART,
339 &vpos, &hpos, NULL, NULL,
340 &rdev->mode_info.crtcs[crtc_id]->base.hwmode)) &&
341 ((vpos >= 0 && hpos < 0) || (hpos >= 0 && !ASIC_IS_AVIVO(rdev)))) {
342 /* crtc didn't flip in this target vblank interval,
343 * but flip is pending in crtc. Based on the current
344 * scanout position we know that the current frame is
345 * (nearly) complete and the flip will (likely)
346 * complete before the start of the next frame.
347 */
348 update_pending = 0;
349 }
350 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
351 if (!update_pending)
352 radeon_crtc_handle_flip(rdev, crtc_id);
353 }
354
355 /**
356 * radeon_crtc_handle_flip - page flip completed
357 *
358 * @rdev: radeon device pointer
359 * @crtc_id: crtc number this event is for
360 *
361 * Called when we are sure that a page flip for this crtc is completed.
362 */
radeon_crtc_handle_flip(struct radeon_device * rdev,int crtc_id)363 void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id)
364 {
365 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
366 struct radeon_flip_work *work;
367 unsigned long flags;
368
369 /* this can happen at init */
370 if (radeon_crtc == NULL)
371 return;
372
373 spin_lock_irqsave(&rdev->ddev->event_lock, flags);
374 work = radeon_crtc->flip_work;
375 if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
376 DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
377 "RADEON_FLIP_SUBMITTED(%d)\n",
378 radeon_crtc->flip_status,
379 RADEON_FLIP_SUBMITTED);
380 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
381 return;
382 }
383
384 /* Pageflip completed. Clean up. */
385 radeon_crtc->flip_status = RADEON_FLIP_NONE;
386 radeon_crtc->flip_work = NULL;
387
388 /* wakeup userspace */
389 if (work->event)
390 drm_crtc_send_vblank_event(&radeon_crtc->base, work->event);
391
392 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
393
394 drm_crtc_vblank_put(&radeon_crtc->base);
395 radeon_irq_kms_pflip_irq_put(rdev, work->crtc_id);
396 queue_work(radeon_crtc->flip_queue, &work->unpin_work);
397 }
398
399 /**
400 * radeon_flip_work_func - page flip framebuffer
401 *
402 * @__work: kernel work item
403 *
404 * Wait for the buffer object to become idle and do the actual page flip
405 */
radeon_flip_work_func(struct work_struct * __work)406 static void radeon_flip_work_func(struct work_struct *__work)
407 {
408 struct radeon_flip_work *work =
409 container_of(__work, struct radeon_flip_work, flip_work);
410 struct radeon_device *rdev = work->rdev;
411 struct drm_device *dev = rdev->ddev;
412 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[work->crtc_id];
413
414 struct drm_crtc *crtc = &radeon_crtc->base;
415 unsigned long flags;
416 int r;
417 int vpos, hpos;
418
419 down_read(&rdev->exclusive_lock);
420 if (work->fence) {
421 struct radeon_fence *fence;
422
423 fence = to_radeon_fence(work->fence);
424 if (fence && fence->rdev == rdev) {
425 r = radeon_fence_wait(fence, false);
426 if (r == -EDEADLK) {
427 up_read(&rdev->exclusive_lock);
428 do {
429 r = radeon_gpu_reset(rdev);
430 } while (r == -EAGAIN);
431 down_read(&rdev->exclusive_lock);
432 }
433 } else
434 r = dma_fence_wait(work->fence, false);
435
436 if (r)
437 DRM_ERROR("failed to wait on page flip fence (%d)!\n", r);
438
439 /* We continue with the page flip even if we failed to wait on
440 * the fence, otherwise the DRM core and userspace will be
441 * confused about which BO the CRTC is scanning out
442 */
443
444 dma_fence_put(work->fence);
445 work->fence = NULL;
446 }
447
448 /* Wait until we're out of the vertical blank period before the one
449 * targeted by the flip. Always wait on pre DCE4 to avoid races with
450 * flip completion handling from vblank irq, as these old asics don't
451 * have reliable pageflip completion interrupts.
452 */
453 while (radeon_crtc->enabled &&
454 (radeon_get_crtc_scanoutpos(dev, work->crtc_id, 0,
455 &vpos, &hpos, NULL, NULL,
456 &crtc->hwmode)
457 & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_IN_VBLANK)) ==
458 (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_IN_VBLANK) &&
459 (!ASIC_IS_AVIVO(rdev) ||
460 ((int) (work->target_vblank -
461 crtc->funcs->get_vblank_counter(crtc)) > 0)))
462 usleep_range(1000, 2000);
463
464 /* We borrow the event spin lock for protecting flip_status */
465 spin_lock_irqsave(&crtc->dev->event_lock, flags);
466
467 /* set the proper interrupt */
468 radeon_irq_kms_pflip_irq_get(rdev, radeon_crtc->crtc_id);
469
470 /* do the flip (mmio) */
471 radeon_page_flip(rdev, radeon_crtc->crtc_id, work->base, work->async);
472
473 radeon_crtc->flip_status = RADEON_FLIP_SUBMITTED;
474 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
475 up_read(&rdev->exclusive_lock);
476 }
477
radeon_crtc_page_flip_target(struct drm_crtc * crtc,struct drm_framebuffer * fb,struct drm_pending_vblank_event * event,uint32_t page_flip_flags,uint32_t target,struct drm_modeset_acquire_ctx * ctx)478 static int radeon_crtc_page_flip_target(struct drm_crtc *crtc,
479 struct drm_framebuffer *fb,
480 struct drm_pending_vblank_event *event,
481 uint32_t page_flip_flags,
482 uint32_t target,
483 struct drm_modeset_acquire_ctx *ctx)
484 {
485 struct drm_device *dev = crtc->dev;
486 struct radeon_device *rdev = dev->dev_private;
487 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
488 struct drm_gem_object *obj;
489 struct radeon_flip_work *work;
490 struct radeon_bo *new_rbo;
491 uint32_t tiling_flags, pitch_pixels;
492 uint64_t base;
493 unsigned long flags;
494 int r;
495
496 work = kzalloc(sizeof *work, GFP_KERNEL);
497 if (work == NULL)
498 return -ENOMEM;
499
500 INIT_WORK(&work->flip_work, radeon_flip_work_func);
501 INIT_WORK(&work->unpin_work, radeon_unpin_work_func);
502
503 work->rdev = rdev;
504 work->crtc_id = radeon_crtc->crtc_id;
505 work->event = event;
506 work->async = (page_flip_flags & DRM_MODE_PAGE_FLIP_ASYNC) != 0;
507
508 /* schedule unpin of the old buffer */
509 obj = crtc->primary->fb->obj[0];
510
511 /* take a reference to the old object */
512 drm_gem_object_get(obj);
513 work->old_rbo = gem_to_radeon_bo(obj);
514
515 obj = fb->obj[0];
516 new_rbo = gem_to_radeon_bo(obj);
517
518 /* pin the new buffer */
519 DRM_DEBUG_DRIVER("flip-ioctl() cur_rbo = %p, new_rbo = %p\n",
520 work->old_rbo, new_rbo);
521
522 r = radeon_bo_reserve(new_rbo, false);
523 if (unlikely(r != 0)) {
524 DRM_ERROR("failed to reserve new rbo buffer before flip\n");
525 goto cleanup;
526 }
527 /* Only 27 bit offset for legacy CRTC */
528 r = radeon_bo_pin_restricted(new_rbo, RADEON_GEM_DOMAIN_VRAM,
529 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, &base);
530 if (unlikely(r != 0)) {
531 radeon_bo_unreserve(new_rbo);
532 r = -EINVAL;
533 DRM_ERROR("failed to pin new rbo buffer before flip\n");
534 goto cleanup;
535 }
536 r = dma_resv_get_singleton(new_rbo->tbo.base.resv, DMA_RESV_USAGE_WRITE,
537 &work->fence);
538 if (r) {
539 radeon_bo_unreserve(new_rbo);
540 DRM_ERROR("failed to get new rbo buffer fences\n");
541 goto cleanup;
542 }
543 radeon_bo_get_tiling_flags(new_rbo, &tiling_flags, NULL);
544 radeon_bo_unreserve(new_rbo);
545
546 if (!ASIC_IS_AVIVO(rdev)) {
547 /* crtc offset is from display base addr not FB location */
548 base -= radeon_crtc->legacy_display_base_addr;
549 pitch_pixels = fb->pitches[0] / fb->format->cpp[0];
550
551 if (tiling_flags & RADEON_TILING_MACRO) {
552 if (ASIC_IS_R300(rdev)) {
553 base &= ~0x7ff;
554 } else {
555 int byteshift = fb->format->cpp[0] * 8 >> 4;
556 int tile_addr = (((crtc->y >> 3) * pitch_pixels + crtc->x) >> (8 - byteshift)) << 11;
557 base += tile_addr + ((crtc->x << byteshift) % 256) + ((crtc->y % 8) << 8);
558 }
559 } else {
560 int offset = crtc->y * pitch_pixels + crtc->x;
561 switch (fb->format->cpp[0] * 8) {
562 case 8:
563 default:
564 offset *= 1;
565 break;
566 case 15:
567 case 16:
568 offset *= 2;
569 break;
570 case 24:
571 offset *= 3;
572 break;
573 case 32:
574 offset *= 4;
575 break;
576 }
577 base += offset;
578 }
579 base &= ~7;
580 }
581 work->base = base;
582 work->target_vblank = target - (uint32_t)drm_crtc_vblank_count(crtc) +
583 crtc->funcs->get_vblank_counter(crtc);
584
585 /* We borrow the event spin lock for protecting flip_work */
586 spin_lock_irqsave(&crtc->dev->event_lock, flags);
587
588 if (radeon_crtc->flip_status != RADEON_FLIP_NONE) {
589 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
590 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
591 r = -EBUSY;
592 goto pflip_cleanup;
593 }
594 radeon_crtc->flip_status = RADEON_FLIP_PENDING;
595 radeon_crtc->flip_work = work;
596
597 /* update crtc fb */
598 crtc->primary->fb = fb;
599
600 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
601
602 queue_work(radeon_crtc->flip_queue, &work->flip_work);
603 return 0;
604
605 pflip_cleanup:
606 if (unlikely(radeon_bo_reserve(new_rbo, false) != 0)) {
607 DRM_ERROR("failed to reserve new rbo in error path\n");
608 goto cleanup;
609 }
610 radeon_bo_unpin(new_rbo);
611 radeon_bo_unreserve(new_rbo);
612
613 cleanup:
614 drm_gem_object_put(&work->old_rbo->tbo.base);
615 dma_fence_put(work->fence);
616 kfree(work);
617 return r;
618 }
619
620 static int
radeon_crtc_set_config(struct drm_mode_set * set,struct drm_modeset_acquire_ctx * ctx)621 radeon_crtc_set_config(struct drm_mode_set *set,
622 struct drm_modeset_acquire_ctx *ctx)
623 {
624 struct drm_device *dev;
625 struct radeon_device *rdev;
626 struct drm_crtc *crtc;
627 bool active = false;
628 int ret;
629
630 if (!set || !set->crtc)
631 return -EINVAL;
632
633 dev = set->crtc->dev;
634
635 ret = pm_runtime_get_sync(dev->dev);
636 if (ret < 0) {
637 pm_runtime_put_autosuspend(dev->dev);
638 return ret;
639 }
640
641 ret = drm_crtc_helper_set_config(set, ctx);
642
643 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
644 if (crtc->enabled)
645 active = true;
646
647 pm_runtime_mark_last_busy(dev->dev);
648
649 rdev = dev->dev_private;
650 /* if we have active crtcs and we don't have a power ref,
651 take the current one */
652 if (active && !rdev->have_disp_power_ref) {
653 rdev->have_disp_power_ref = true;
654 return ret;
655 }
656 /* if we have no active crtcs, then drop the power ref
657 we got before */
658 if (!active && rdev->have_disp_power_ref) {
659 pm_runtime_put_autosuspend(dev->dev);
660 rdev->have_disp_power_ref = false;
661 }
662
663 /* drop the power reference we got coming in here */
664 pm_runtime_put_autosuspend(dev->dev);
665 return ret;
666 }
667
668 static const struct drm_crtc_funcs radeon_crtc_funcs = {
669 .cursor_set2 = radeon_crtc_cursor_set2,
670 .cursor_move = radeon_crtc_cursor_move,
671 .gamma_set = radeon_crtc_gamma_set,
672 .set_config = radeon_crtc_set_config,
673 .destroy = radeon_crtc_destroy,
674 .page_flip_target = radeon_crtc_page_flip_target,
675 .get_vblank_counter = radeon_get_vblank_counter_kms,
676 .enable_vblank = radeon_enable_vblank_kms,
677 .disable_vblank = radeon_disable_vblank_kms,
678 .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp,
679 };
680
radeon_crtc_init(struct drm_device * dev,int index)681 static void radeon_crtc_init(struct drm_device *dev, int index)
682 {
683 struct radeon_device *rdev = dev->dev_private;
684 struct radeon_crtc *radeon_crtc;
685
686 radeon_crtc = kzalloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
687 if (radeon_crtc == NULL)
688 return;
689
690 drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs);
691
692 drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
693 radeon_crtc->crtc_id = index;
694 radeon_crtc->flip_queue = alloc_workqueue("radeon-crtc", WQ_HIGHPRI, 0);
695 rdev->mode_info.crtcs[index] = radeon_crtc;
696
697 if (rdev->family >= CHIP_BONAIRE) {
698 radeon_crtc->max_cursor_width = CIK_CURSOR_WIDTH;
699 radeon_crtc->max_cursor_height = CIK_CURSOR_HEIGHT;
700 } else {
701 radeon_crtc->max_cursor_width = CURSOR_WIDTH;
702 radeon_crtc->max_cursor_height = CURSOR_HEIGHT;
703 }
704 dev->mode_config.cursor_width = radeon_crtc->max_cursor_width;
705 dev->mode_config.cursor_height = radeon_crtc->max_cursor_height;
706
707 #if 0
708 radeon_crtc->mode_set.crtc = &radeon_crtc->base;
709 radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
710 radeon_crtc->mode_set.num_connectors = 0;
711 #endif
712
713 if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
714 radeon_atombios_init_crtc(dev, radeon_crtc);
715 else
716 radeon_legacy_init_crtc(dev, radeon_crtc);
717 }
718
719 static const char *encoder_names[38] = {
720 "NONE",
721 "INTERNAL_LVDS",
722 "INTERNAL_TMDS1",
723 "INTERNAL_TMDS2",
724 "INTERNAL_DAC1",
725 "INTERNAL_DAC2",
726 "INTERNAL_SDVOA",
727 "INTERNAL_SDVOB",
728 "SI170B",
729 "CH7303",
730 "CH7301",
731 "INTERNAL_DVO1",
732 "EXTERNAL_SDVOA",
733 "EXTERNAL_SDVOB",
734 "TITFP513",
735 "INTERNAL_LVTM1",
736 "VT1623",
737 "HDMI_SI1930",
738 "HDMI_INTERNAL",
739 "INTERNAL_KLDSCP_TMDS1",
740 "INTERNAL_KLDSCP_DVO1",
741 "INTERNAL_KLDSCP_DAC1",
742 "INTERNAL_KLDSCP_DAC2",
743 "SI178",
744 "MVPU_FPGA",
745 "INTERNAL_DDI",
746 "VT1625",
747 "HDMI_SI1932",
748 "DP_AN9801",
749 "DP_DP501",
750 "INTERNAL_UNIPHY",
751 "INTERNAL_KLDSCP_LVTMA",
752 "INTERNAL_UNIPHY1",
753 "INTERNAL_UNIPHY2",
754 "NUTMEG",
755 "TRAVIS",
756 "INTERNAL_VCE",
757 "INTERNAL_UNIPHY3",
758 };
759
760 static const char *hpd_names[6] = {
761 "HPD1",
762 "HPD2",
763 "HPD3",
764 "HPD4",
765 "HPD5",
766 "HPD6",
767 };
768
radeon_print_display_setup(struct drm_device * dev)769 static void radeon_print_display_setup(struct drm_device *dev)
770 {
771 struct drm_connector *connector;
772 struct radeon_connector *radeon_connector;
773 struct drm_encoder *encoder;
774 struct radeon_encoder *radeon_encoder;
775 uint32_t devices;
776 int i = 0;
777
778 DRM_INFO("Radeon Display Connectors\n");
779 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
780 radeon_connector = to_radeon_connector(connector);
781 DRM_INFO("Connector %d:\n", i);
782 DRM_INFO(" %s\n", connector->name);
783 if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
784 DRM_INFO(" %s\n", hpd_names[radeon_connector->hpd.hpd]);
785 if (radeon_connector->ddc_bus) {
786 DRM_INFO(" DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
787 radeon_connector->ddc_bus->rec.mask_clk_reg,
788 radeon_connector->ddc_bus->rec.mask_data_reg,
789 radeon_connector->ddc_bus->rec.a_clk_reg,
790 radeon_connector->ddc_bus->rec.a_data_reg,
791 radeon_connector->ddc_bus->rec.en_clk_reg,
792 radeon_connector->ddc_bus->rec.en_data_reg,
793 radeon_connector->ddc_bus->rec.y_clk_reg,
794 radeon_connector->ddc_bus->rec.y_data_reg);
795 if (radeon_connector->router.ddc_valid)
796 DRM_INFO(" DDC Router 0x%x/0x%x\n",
797 radeon_connector->router.ddc_mux_control_pin,
798 radeon_connector->router.ddc_mux_state);
799 if (radeon_connector->router.cd_valid)
800 DRM_INFO(" Clock/Data Router 0x%x/0x%x\n",
801 radeon_connector->router.cd_mux_control_pin,
802 radeon_connector->router.cd_mux_state);
803 } else {
804 if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
805 connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
806 connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
807 connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
808 connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
809 connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
810 DRM_INFO(" DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
811 }
812 DRM_INFO(" Encoders:\n");
813 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
814 radeon_encoder = to_radeon_encoder(encoder);
815 devices = radeon_encoder->devices & radeon_connector->devices;
816 if (devices) {
817 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
818 DRM_INFO(" CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
819 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
820 DRM_INFO(" CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
821 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
822 DRM_INFO(" LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
823 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
824 DRM_INFO(" DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
825 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
826 DRM_INFO(" DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
827 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
828 DRM_INFO(" DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
829 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
830 DRM_INFO(" DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
831 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
832 DRM_INFO(" DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
833 if (devices & ATOM_DEVICE_DFP6_SUPPORT)
834 DRM_INFO(" DFP6: %s\n", encoder_names[radeon_encoder->encoder_id]);
835 if (devices & ATOM_DEVICE_TV1_SUPPORT)
836 DRM_INFO(" TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
837 if (devices & ATOM_DEVICE_CV_SUPPORT)
838 DRM_INFO(" CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
839 }
840 }
841 i++;
842 }
843 }
844
radeon_setup_enc_conn(struct drm_device * dev)845 static bool radeon_setup_enc_conn(struct drm_device *dev)
846 {
847 struct radeon_device *rdev = dev->dev_private;
848 bool ret = false;
849
850 if (rdev->bios) {
851 if (rdev->is_atom_bios) {
852 ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
853 if (!ret)
854 ret = radeon_get_atom_connector_info_from_object_table(dev);
855 } else {
856 ret = radeon_get_legacy_connector_info_from_bios(dev);
857 if (!ret)
858 ret = radeon_get_legacy_connector_info_from_table(dev);
859 }
860 } else {
861 if (!ASIC_IS_AVIVO(rdev))
862 ret = radeon_get_legacy_connector_info_from_table(dev);
863 }
864 if (ret) {
865 radeon_setup_encoder_clones(dev);
866 radeon_print_display_setup(dev);
867 }
868
869 return ret;
870 }
871
872 /* avivo */
873
874 /**
875 * avivo_reduce_ratio - fractional number reduction
876 *
877 * @nom: nominator
878 * @den: denominator
879 * @nom_min: minimum value for nominator
880 * @den_min: minimum value for denominator
881 *
882 * Find the greatest common divisor and apply it on both nominator and
883 * denominator, but make nominator and denominator are at least as large
884 * as their minimum values.
885 */
avivo_reduce_ratio(unsigned * nom,unsigned * den,unsigned nom_min,unsigned den_min)886 static void avivo_reduce_ratio(unsigned *nom, unsigned *den,
887 unsigned nom_min, unsigned den_min)
888 {
889 unsigned tmp;
890
891 /* reduce the numbers to a simpler ratio */
892 tmp = gcd(*nom, *den);
893 *nom /= tmp;
894 *den /= tmp;
895
896 /* make sure nominator is large enough */
897 if (*nom < nom_min) {
898 tmp = DIV_ROUND_UP(nom_min, *nom);
899 *nom *= tmp;
900 *den *= tmp;
901 }
902
903 /* make sure the denominator is large enough */
904 if (*den < den_min) {
905 tmp = DIV_ROUND_UP(den_min, *den);
906 *nom *= tmp;
907 *den *= tmp;
908 }
909 }
910
911 /**
912 * avivo_get_fb_ref_div - feedback and ref divider calculation
913 *
914 * @nom: nominator
915 * @den: denominator
916 * @post_div: post divider
917 * @fb_div_max: feedback divider maximum
918 * @ref_div_max: reference divider maximum
919 * @fb_div: resulting feedback divider
920 * @ref_div: resulting reference divider
921 *
922 * Calculate feedback and reference divider for a given post divider. Makes
923 * sure we stay within the limits.
924 */
avivo_get_fb_ref_div(unsigned nom,unsigned den,unsigned post_div,unsigned fb_div_max,unsigned ref_div_max,unsigned * fb_div,unsigned * ref_div)925 static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div,
926 unsigned fb_div_max, unsigned ref_div_max,
927 unsigned *fb_div, unsigned *ref_div)
928 {
929 /* limit reference * post divider to a maximum */
930 ref_div_max = max(min(100 / post_div, ref_div_max), 1u);
931
932 /* get matching reference and feedback divider */
933 *ref_div = min(max(den/post_div, 1u), ref_div_max);
934 *fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den);
935
936 /* limit fb divider to its maximum */
937 if (*fb_div > fb_div_max) {
938 *ref_div = (*ref_div * fb_div_max)/(*fb_div);
939 *fb_div = fb_div_max;
940 }
941 }
942
943 /**
944 * radeon_compute_pll_avivo - compute PLL paramaters
945 *
946 * @pll: information about the PLL
947 * @freq: target frequency
948 * @dot_clock_p: resulting pixel clock
949 * @fb_div_p: resulting feedback divider
950 * @frac_fb_div_p: fractional part of the feedback divider
951 * @ref_div_p: resulting reference divider
952 * @post_div_p: resulting reference divider
953 *
954 * Try to calculate the PLL parameters to generate the given frequency:
955 * dot_clock = (ref_freq * feedback_div) / (ref_div * post_div)
956 */
radeon_compute_pll_avivo(struct radeon_pll * pll,u32 freq,u32 * dot_clock_p,u32 * fb_div_p,u32 * frac_fb_div_p,u32 * ref_div_p,u32 * post_div_p)957 void radeon_compute_pll_avivo(struct radeon_pll *pll,
958 u32 freq,
959 u32 *dot_clock_p,
960 u32 *fb_div_p,
961 u32 *frac_fb_div_p,
962 u32 *ref_div_p,
963 u32 *post_div_p)
964 {
965 unsigned target_clock = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ?
966 freq : freq / 10;
967
968 unsigned fb_div_min, fb_div_max, fb_div;
969 unsigned post_div_min, post_div_max, post_div;
970 unsigned ref_div_min, ref_div_max, ref_div;
971 unsigned post_div_best, diff_best;
972 unsigned nom, den;
973
974 /* determine allowed feedback divider range */
975 fb_div_min = pll->min_feedback_div;
976 fb_div_max = pll->max_feedback_div;
977
978 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
979 fb_div_min *= 10;
980 fb_div_max *= 10;
981 }
982
983 /* determine allowed ref divider range */
984 if (pll->flags & RADEON_PLL_USE_REF_DIV)
985 ref_div_min = pll->reference_div;
986 else
987 ref_div_min = pll->min_ref_div;
988
989 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV &&
990 pll->flags & RADEON_PLL_USE_REF_DIV)
991 ref_div_max = pll->reference_div;
992 else if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
993 /* fix for problems on RS880 */
994 ref_div_max = min(pll->max_ref_div, 7u);
995 else
996 ref_div_max = pll->max_ref_div;
997
998 /* determine allowed post divider range */
999 if (pll->flags & RADEON_PLL_USE_POST_DIV) {
1000 post_div_min = pll->post_div;
1001 post_div_max = pll->post_div;
1002 } else {
1003 unsigned vco_min, vco_max;
1004
1005 if (pll->flags & RADEON_PLL_IS_LCD) {
1006 vco_min = pll->lcd_pll_out_min;
1007 vco_max = pll->lcd_pll_out_max;
1008 } else {
1009 vco_min = pll->pll_out_min;
1010 vco_max = pll->pll_out_max;
1011 }
1012
1013 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1014 vco_min *= 10;
1015 vco_max *= 10;
1016 }
1017
1018 post_div_min = vco_min / target_clock;
1019 if ((target_clock * post_div_min) < vco_min)
1020 ++post_div_min;
1021 if (post_div_min < pll->min_post_div)
1022 post_div_min = pll->min_post_div;
1023
1024 post_div_max = vco_max / target_clock;
1025 if ((target_clock * post_div_max) > vco_max)
1026 --post_div_max;
1027 if (post_div_max > pll->max_post_div)
1028 post_div_max = pll->max_post_div;
1029 }
1030
1031 /* represent the searched ratio as fractional number */
1032 nom = target_clock;
1033 den = pll->reference_freq;
1034
1035 /* reduce the numbers to a simpler ratio */
1036 avivo_reduce_ratio(&nom, &den, fb_div_min, post_div_min);
1037
1038 /* now search for a post divider */
1039 if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
1040 post_div_best = post_div_min;
1041 else
1042 post_div_best = post_div_max;
1043 diff_best = ~0;
1044
1045 for (post_div = post_div_min; post_div <= post_div_max; ++post_div) {
1046 unsigned diff;
1047 avivo_get_fb_ref_div(nom, den, post_div, fb_div_max,
1048 ref_div_max, &fb_div, &ref_div);
1049 diff = abs(target_clock - (pll->reference_freq * fb_div) /
1050 (ref_div * post_div));
1051
1052 if (diff < diff_best || (diff == diff_best &&
1053 !(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) {
1054
1055 post_div_best = post_div;
1056 diff_best = diff;
1057 }
1058 }
1059 post_div = post_div_best;
1060
1061 /* get the feedback and reference divider for the optimal value */
1062 avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, ref_div_max,
1063 &fb_div, &ref_div);
1064
1065 /* reduce the numbers to a simpler ratio once more */
1066 /* this also makes sure that the reference divider is large enough */
1067 avivo_reduce_ratio(&fb_div, &ref_div, fb_div_min, ref_div_min);
1068
1069 /* avoid high jitter with small fractional dividers */
1070 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV && (fb_div % 10)) {
1071 fb_div_min = max(fb_div_min, (9 - (fb_div % 10)) * 20 + 50);
1072 if (fb_div < fb_div_min) {
1073 unsigned tmp = DIV_ROUND_UP(fb_div_min, fb_div);
1074 fb_div *= tmp;
1075 ref_div *= tmp;
1076 }
1077 }
1078
1079 /* and finally save the result */
1080 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1081 *fb_div_p = fb_div / 10;
1082 *frac_fb_div_p = fb_div % 10;
1083 } else {
1084 *fb_div_p = fb_div;
1085 *frac_fb_div_p = 0;
1086 }
1087
1088 *dot_clock_p = ((pll->reference_freq * *fb_div_p * 10) +
1089 (pll->reference_freq * *frac_fb_div_p)) /
1090 (ref_div * post_div * 10);
1091 *ref_div_p = ref_div;
1092 *post_div_p = post_div;
1093
1094 DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1095 freq, *dot_clock_p * 10, *fb_div_p, *frac_fb_div_p,
1096 ref_div, post_div);
1097 }
1098
1099 /* pre-avivo */
radeon_div(uint64_t n,uint32_t d)1100 static inline uint32_t radeon_div(uint64_t n, uint32_t d)
1101 {
1102 n += d / 2;
1103
1104 do_div(n, d);
1105 return n;
1106 }
1107
radeon_compute_pll_legacy(struct radeon_pll * pll,uint64_t freq,uint32_t * dot_clock_p,uint32_t * fb_div_p,uint32_t * frac_fb_div_p,uint32_t * ref_div_p,uint32_t * post_div_p)1108 void radeon_compute_pll_legacy(struct radeon_pll *pll,
1109 uint64_t freq,
1110 uint32_t *dot_clock_p,
1111 uint32_t *fb_div_p,
1112 uint32_t *frac_fb_div_p,
1113 uint32_t *ref_div_p,
1114 uint32_t *post_div_p)
1115 {
1116 uint32_t min_ref_div = pll->min_ref_div;
1117 uint32_t max_ref_div = pll->max_ref_div;
1118 uint32_t min_post_div = pll->min_post_div;
1119 uint32_t max_post_div = pll->max_post_div;
1120 uint32_t min_fractional_feed_div = 0;
1121 uint32_t max_fractional_feed_div = 0;
1122 uint32_t best_vco = pll->best_vco;
1123 uint32_t best_post_div = 1;
1124 uint32_t best_ref_div = 1;
1125 uint32_t best_feedback_div = 1;
1126 uint32_t best_frac_feedback_div = 0;
1127 uint32_t best_freq = -1;
1128 uint32_t best_error = 0xffffffff;
1129 uint32_t best_vco_diff = 1;
1130 uint32_t post_div;
1131 u32 pll_out_min, pll_out_max;
1132
1133 DRM_DEBUG_KMS("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div);
1134 freq = freq * 1000;
1135
1136 if (pll->flags & RADEON_PLL_IS_LCD) {
1137 pll_out_min = pll->lcd_pll_out_min;
1138 pll_out_max = pll->lcd_pll_out_max;
1139 } else {
1140 pll_out_min = pll->pll_out_min;
1141 pll_out_max = pll->pll_out_max;
1142 }
1143
1144 if (pll_out_min > 64800)
1145 pll_out_min = 64800;
1146
1147 if (pll->flags & RADEON_PLL_USE_REF_DIV)
1148 min_ref_div = max_ref_div = pll->reference_div;
1149 else {
1150 while (min_ref_div < max_ref_div-1) {
1151 uint32_t mid = (min_ref_div + max_ref_div) / 2;
1152 uint32_t pll_in = pll->reference_freq / mid;
1153 if (pll_in < pll->pll_in_min)
1154 max_ref_div = mid;
1155 else if (pll_in > pll->pll_in_max)
1156 min_ref_div = mid;
1157 else
1158 break;
1159 }
1160 }
1161
1162 if (pll->flags & RADEON_PLL_USE_POST_DIV)
1163 min_post_div = max_post_div = pll->post_div;
1164
1165 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1166 min_fractional_feed_div = pll->min_frac_feedback_div;
1167 max_fractional_feed_div = pll->max_frac_feedback_div;
1168 }
1169
1170 for (post_div = max_post_div; post_div >= min_post_div; --post_div) {
1171 uint32_t ref_div;
1172
1173 if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
1174 continue;
1175
1176 /* legacy radeons only have a few post_divs */
1177 if (pll->flags & RADEON_PLL_LEGACY) {
1178 if ((post_div == 5) ||
1179 (post_div == 7) ||
1180 (post_div == 9) ||
1181 (post_div == 10) ||
1182 (post_div == 11) ||
1183 (post_div == 13) ||
1184 (post_div == 14) ||
1185 (post_div == 15))
1186 continue;
1187 }
1188
1189 for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
1190 uint32_t feedback_div, current_freq = 0, error, vco_diff;
1191 uint32_t pll_in = pll->reference_freq / ref_div;
1192 uint32_t min_feed_div = pll->min_feedback_div;
1193 uint32_t max_feed_div = pll->max_feedback_div + 1;
1194
1195 if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
1196 continue;
1197
1198 while (min_feed_div < max_feed_div) {
1199 uint32_t vco;
1200 uint32_t min_frac_feed_div = min_fractional_feed_div;
1201 uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
1202 uint32_t frac_feedback_div;
1203 uint64_t tmp;
1204
1205 feedback_div = (min_feed_div + max_feed_div) / 2;
1206
1207 tmp = (uint64_t)pll->reference_freq * feedback_div;
1208 vco = radeon_div(tmp, ref_div);
1209
1210 if (vco < pll_out_min) {
1211 min_feed_div = feedback_div + 1;
1212 continue;
1213 } else if (vco > pll_out_max) {
1214 max_feed_div = feedback_div;
1215 continue;
1216 }
1217
1218 while (min_frac_feed_div < max_frac_feed_div) {
1219 frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
1220 tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
1221 tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
1222 current_freq = radeon_div(tmp, ref_div * post_div);
1223
1224 if (pll->flags & RADEON_PLL_PREFER_CLOSEST_LOWER) {
1225 if (freq < current_freq)
1226 error = 0xffffffff;
1227 else
1228 error = freq - current_freq;
1229 } else
1230 error = abs(current_freq - freq);
1231 vco_diff = abs(vco - best_vco);
1232
1233 if ((best_vco == 0 && error < best_error) ||
1234 (best_vco != 0 &&
1235 ((best_error > 100 && error < best_error - 100) ||
1236 (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
1237 best_post_div = post_div;
1238 best_ref_div = ref_div;
1239 best_feedback_div = feedback_div;
1240 best_frac_feedback_div = frac_feedback_div;
1241 best_freq = current_freq;
1242 best_error = error;
1243 best_vco_diff = vco_diff;
1244 } else if (current_freq == freq) {
1245 if (best_freq == -1) {
1246 best_post_div = post_div;
1247 best_ref_div = ref_div;
1248 best_feedback_div = feedback_div;
1249 best_frac_feedback_div = frac_feedback_div;
1250 best_freq = current_freq;
1251 best_error = error;
1252 best_vco_diff = vco_diff;
1253 } else if (((pll->flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
1254 ((pll->flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
1255 ((pll->flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
1256 ((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
1257 ((pll->flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
1258 ((pll->flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
1259 best_post_div = post_div;
1260 best_ref_div = ref_div;
1261 best_feedback_div = feedback_div;
1262 best_frac_feedback_div = frac_feedback_div;
1263 best_freq = current_freq;
1264 best_error = error;
1265 best_vco_diff = vco_diff;
1266 }
1267 }
1268 if (current_freq < freq)
1269 min_frac_feed_div = frac_feedback_div + 1;
1270 else
1271 max_frac_feed_div = frac_feedback_div;
1272 }
1273 if (current_freq < freq)
1274 min_feed_div = feedback_div + 1;
1275 else
1276 max_feed_div = feedback_div;
1277 }
1278 }
1279 }
1280
1281 *dot_clock_p = best_freq / 10000;
1282 *fb_div_p = best_feedback_div;
1283 *frac_fb_div_p = best_frac_feedback_div;
1284 *ref_div_p = best_ref_div;
1285 *post_div_p = best_post_div;
1286 DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1287 (long long)freq,
1288 best_freq / 1000, best_feedback_div, best_frac_feedback_div,
1289 best_ref_div, best_post_div);
1290
1291 }
1292
1293 static const struct drm_framebuffer_funcs radeon_fb_funcs = {
1294 .destroy = drm_gem_fb_destroy,
1295 .create_handle = drm_gem_fb_create_handle,
1296 };
1297
1298 int
radeon_framebuffer_init(struct drm_device * dev,struct drm_framebuffer * fb,const struct drm_mode_fb_cmd2 * mode_cmd,struct drm_gem_object * obj)1299 radeon_framebuffer_init(struct drm_device *dev,
1300 struct drm_framebuffer *fb,
1301 const struct drm_mode_fb_cmd2 *mode_cmd,
1302 struct drm_gem_object *obj)
1303 {
1304 int ret;
1305 fb->obj[0] = obj;
1306 drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
1307 ret = drm_framebuffer_init(dev, fb, &radeon_fb_funcs);
1308 if (ret) {
1309 fb->obj[0] = NULL;
1310 return ret;
1311 }
1312 return 0;
1313 }
1314
1315 static struct drm_framebuffer *
radeon_user_framebuffer_create(struct drm_device * dev,struct drm_file * file_priv,const struct drm_mode_fb_cmd2 * mode_cmd)1316 radeon_user_framebuffer_create(struct drm_device *dev,
1317 struct drm_file *file_priv,
1318 const struct drm_mode_fb_cmd2 *mode_cmd)
1319 {
1320 struct drm_gem_object *obj;
1321 struct drm_framebuffer *fb;
1322 int ret;
1323
1324 obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
1325 if (obj == NULL) {
1326 dev_err(dev->dev, "No GEM object associated to handle 0x%08X, "
1327 "can't create framebuffer\n", mode_cmd->handles[0]);
1328 return ERR_PTR(-ENOENT);
1329 }
1330
1331 /* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */
1332 if (obj->import_attach) {
1333 DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n");
1334 drm_gem_object_put(obj);
1335 return ERR_PTR(-EINVAL);
1336 }
1337
1338 fb = kzalloc(sizeof(*fb), GFP_KERNEL);
1339 if (fb == NULL) {
1340 drm_gem_object_put(obj);
1341 return ERR_PTR(-ENOMEM);
1342 }
1343
1344 ret = radeon_framebuffer_init(dev, fb, mode_cmd, obj);
1345 if (ret) {
1346 kfree(fb);
1347 drm_gem_object_put(obj);
1348 return ERR_PTR(ret);
1349 }
1350
1351 return fb;
1352 }
1353
1354 static const struct drm_mode_config_funcs radeon_mode_funcs = {
1355 .fb_create = radeon_user_framebuffer_create,
1356 .output_poll_changed = drm_fb_helper_output_poll_changed,
1357 };
1358
1359 static const struct drm_prop_enum_list radeon_tmds_pll_enum_list[] =
1360 { { 0, "driver" },
1361 { 1, "bios" },
1362 };
1363
1364 static const struct drm_prop_enum_list radeon_tv_std_enum_list[] =
1365 { { TV_STD_NTSC, "ntsc" },
1366 { TV_STD_PAL, "pal" },
1367 { TV_STD_PAL_M, "pal-m" },
1368 { TV_STD_PAL_60, "pal-60" },
1369 { TV_STD_NTSC_J, "ntsc-j" },
1370 { TV_STD_SCART_PAL, "scart-pal" },
1371 { TV_STD_PAL_CN, "pal-cn" },
1372 { TV_STD_SECAM, "secam" },
1373 };
1374
1375 static const struct drm_prop_enum_list radeon_underscan_enum_list[] =
1376 { { UNDERSCAN_OFF, "off" },
1377 { UNDERSCAN_ON, "on" },
1378 { UNDERSCAN_AUTO, "auto" },
1379 };
1380
1381 static const struct drm_prop_enum_list radeon_audio_enum_list[] =
1382 { { RADEON_AUDIO_DISABLE, "off" },
1383 { RADEON_AUDIO_ENABLE, "on" },
1384 { RADEON_AUDIO_AUTO, "auto" },
1385 };
1386
1387 /* XXX support different dither options? spatial, temporal, both, etc. */
1388 static const struct drm_prop_enum_list radeon_dither_enum_list[] =
1389 { { RADEON_FMT_DITHER_DISABLE, "off" },
1390 { RADEON_FMT_DITHER_ENABLE, "on" },
1391 };
1392
1393 static const struct drm_prop_enum_list radeon_output_csc_enum_list[] =
1394 { { RADEON_OUTPUT_CSC_BYPASS, "bypass" },
1395 { RADEON_OUTPUT_CSC_TVRGB, "tvrgb" },
1396 { RADEON_OUTPUT_CSC_YCBCR601, "ycbcr601" },
1397 { RADEON_OUTPUT_CSC_YCBCR709, "ycbcr709" },
1398 };
1399
radeon_modeset_create_props(struct radeon_device * rdev)1400 static int radeon_modeset_create_props(struct radeon_device *rdev)
1401 {
1402 int sz;
1403
1404 if (rdev->is_atom_bios) {
1405 rdev->mode_info.coherent_mode_property =
1406 drm_property_create_range(rdev->ddev, 0 , "coherent", 0, 1);
1407 if (!rdev->mode_info.coherent_mode_property)
1408 return -ENOMEM;
1409 }
1410
1411 if (!ASIC_IS_AVIVO(rdev)) {
1412 sz = ARRAY_SIZE(radeon_tmds_pll_enum_list);
1413 rdev->mode_info.tmds_pll_property =
1414 drm_property_create_enum(rdev->ddev, 0,
1415 "tmds_pll",
1416 radeon_tmds_pll_enum_list, sz);
1417 }
1418
1419 rdev->mode_info.load_detect_property =
1420 drm_property_create_range(rdev->ddev, 0, "load detection", 0, 1);
1421 if (!rdev->mode_info.load_detect_property)
1422 return -ENOMEM;
1423
1424 drm_mode_create_scaling_mode_property(rdev->ddev);
1425
1426 sz = ARRAY_SIZE(radeon_tv_std_enum_list);
1427 rdev->mode_info.tv_std_property =
1428 drm_property_create_enum(rdev->ddev, 0,
1429 "tv standard",
1430 radeon_tv_std_enum_list, sz);
1431
1432 sz = ARRAY_SIZE(radeon_underscan_enum_list);
1433 rdev->mode_info.underscan_property =
1434 drm_property_create_enum(rdev->ddev, 0,
1435 "underscan",
1436 radeon_underscan_enum_list, sz);
1437
1438 rdev->mode_info.underscan_hborder_property =
1439 drm_property_create_range(rdev->ddev, 0,
1440 "underscan hborder", 0, 128);
1441 if (!rdev->mode_info.underscan_hborder_property)
1442 return -ENOMEM;
1443
1444 rdev->mode_info.underscan_vborder_property =
1445 drm_property_create_range(rdev->ddev, 0,
1446 "underscan vborder", 0, 128);
1447 if (!rdev->mode_info.underscan_vborder_property)
1448 return -ENOMEM;
1449
1450 sz = ARRAY_SIZE(radeon_audio_enum_list);
1451 rdev->mode_info.audio_property =
1452 drm_property_create_enum(rdev->ddev, 0,
1453 "audio",
1454 radeon_audio_enum_list, sz);
1455
1456 sz = ARRAY_SIZE(radeon_dither_enum_list);
1457 rdev->mode_info.dither_property =
1458 drm_property_create_enum(rdev->ddev, 0,
1459 "dither",
1460 radeon_dither_enum_list, sz);
1461
1462 sz = ARRAY_SIZE(radeon_output_csc_enum_list);
1463 rdev->mode_info.output_csc_property =
1464 drm_property_create_enum(rdev->ddev, 0,
1465 "output_csc",
1466 radeon_output_csc_enum_list, sz);
1467
1468 return 0;
1469 }
1470
radeon_update_display_priority(struct radeon_device * rdev)1471 void radeon_update_display_priority(struct radeon_device *rdev)
1472 {
1473 /* adjustment options for the display watermarks */
1474 if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) {
1475 /* set display priority to high for r3xx, rv515 chips
1476 * this avoids flickering due to underflow to the
1477 * display controllers during heavy acceleration.
1478 * Don't force high on rs4xx igp chips as it seems to
1479 * affect the sound card. See kernel bug 15982.
1480 */
1481 if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) &&
1482 !(rdev->flags & RADEON_IS_IGP))
1483 rdev->disp_priority = 2;
1484 else
1485 rdev->disp_priority = 0;
1486 } else
1487 rdev->disp_priority = radeon_disp_priority;
1488
1489 }
1490
1491 /*
1492 * Allocate hdmi structs and determine register offsets
1493 */
radeon_afmt_init(struct radeon_device * rdev)1494 static void radeon_afmt_init(struct radeon_device *rdev)
1495 {
1496 int i;
1497
1498 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++)
1499 rdev->mode_info.afmt[i] = NULL;
1500
1501 if (ASIC_IS_NODCE(rdev)) {
1502 /* nothing to do */
1503 } else if (ASIC_IS_DCE4(rdev)) {
1504 static uint32_t eg_offsets[] = {
1505 EVERGREEN_CRTC0_REGISTER_OFFSET,
1506 EVERGREEN_CRTC1_REGISTER_OFFSET,
1507 EVERGREEN_CRTC2_REGISTER_OFFSET,
1508 EVERGREEN_CRTC3_REGISTER_OFFSET,
1509 EVERGREEN_CRTC4_REGISTER_OFFSET,
1510 EVERGREEN_CRTC5_REGISTER_OFFSET,
1511 0x13830 - 0x7030,
1512 };
1513 int num_afmt;
1514
1515 /* DCE8 has 7 audio blocks tied to DIG encoders */
1516 /* DCE6 has 6 audio blocks tied to DIG encoders */
1517 /* DCE4/5 has 6 audio blocks tied to DIG encoders */
1518 /* DCE4.1 has 2 audio blocks tied to DIG encoders */
1519 if (ASIC_IS_DCE8(rdev))
1520 num_afmt = 7;
1521 else if (ASIC_IS_DCE6(rdev))
1522 num_afmt = 6;
1523 else if (ASIC_IS_DCE5(rdev))
1524 num_afmt = 6;
1525 else if (ASIC_IS_DCE41(rdev))
1526 num_afmt = 2;
1527 else /* DCE4 */
1528 num_afmt = 6;
1529
1530 BUG_ON(num_afmt > ARRAY_SIZE(eg_offsets));
1531 for (i = 0; i < num_afmt; i++) {
1532 rdev->mode_info.afmt[i] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1533 if (rdev->mode_info.afmt[i]) {
1534 rdev->mode_info.afmt[i]->offset = eg_offsets[i];
1535 rdev->mode_info.afmt[i]->id = i;
1536 }
1537 }
1538 } else if (ASIC_IS_DCE3(rdev)) {
1539 /* DCE3.x has 2 audio blocks tied to DIG encoders */
1540 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1541 if (rdev->mode_info.afmt[0]) {
1542 rdev->mode_info.afmt[0]->offset = DCE3_HDMI_OFFSET0;
1543 rdev->mode_info.afmt[0]->id = 0;
1544 }
1545 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1546 if (rdev->mode_info.afmt[1]) {
1547 rdev->mode_info.afmt[1]->offset = DCE3_HDMI_OFFSET1;
1548 rdev->mode_info.afmt[1]->id = 1;
1549 }
1550 } else if (ASIC_IS_DCE2(rdev)) {
1551 /* DCE2 has at least 1 routable audio block */
1552 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1553 if (rdev->mode_info.afmt[0]) {
1554 rdev->mode_info.afmt[0]->offset = DCE2_HDMI_OFFSET0;
1555 rdev->mode_info.afmt[0]->id = 0;
1556 }
1557 /* r6xx has 2 routable audio blocks */
1558 if (rdev->family >= CHIP_R600) {
1559 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1560 if (rdev->mode_info.afmt[1]) {
1561 rdev->mode_info.afmt[1]->offset = DCE2_HDMI_OFFSET1;
1562 rdev->mode_info.afmt[1]->id = 1;
1563 }
1564 }
1565 }
1566 }
1567
radeon_afmt_fini(struct radeon_device * rdev)1568 static void radeon_afmt_fini(struct radeon_device *rdev)
1569 {
1570 int i;
1571
1572 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++) {
1573 kfree(rdev->mode_info.afmt[i]);
1574 rdev->mode_info.afmt[i] = NULL;
1575 }
1576 }
1577
radeon_modeset_init(struct radeon_device * rdev)1578 int radeon_modeset_init(struct radeon_device *rdev)
1579 {
1580 int i;
1581 int ret;
1582
1583 drm_mode_config_init(rdev->ddev);
1584 rdev->mode_info.mode_config_initialized = true;
1585
1586 rdev->ddev->mode_config.funcs = &radeon_mode_funcs;
1587
1588 if (radeon_use_pflipirq == 2 && rdev->family >= CHIP_R600)
1589 rdev->ddev->mode_config.async_page_flip = true;
1590
1591 if (ASIC_IS_DCE5(rdev)) {
1592 rdev->ddev->mode_config.max_width = 16384;
1593 rdev->ddev->mode_config.max_height = 16384;
1594 } else if (ASIC_IS_AVIVO(rdev)) {
1595 rdev->ddev->mode_config.max_width = 8192;
1596 rdev->ddev->mode_config.max_height = 8192;
1597 } else {
1598 rdev->ddev->mode_config.max_width = 4096;
1599 rdev->ddev->mode_config.max_height = 4096;
1600 }
1601
1602 rdev->ddev->mode_config.preferred_depth = 24;
1603 rdev->ddev->mode_config.prefer_shadow = 1;
1604
1605 rdev->ddev->mode_config.fb_modifiers_not_supported = true;
1606
1607 rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
1608
1609 ret = radeon_modeset_create_props(rdev);
1610 if (ret) {
1611 return ret;
1612 }
1613
1614 /* init i2c buses */
1615 radeon_i2c_init(rdev);
1616
1617 /* check combios for a valid hardcoded EDID - Sun servers */
1618 if (!rdev->is_atom_bios) {
1619 /* check for hardcoded EDID in BIOS */
1620 radeon_combios_check_hardcoded_edid(rdev);
1621 }
1622
1623 /* allocate crtcs */
1624 for (i = 0; i < rdev->num_crtc; i++) {
1625 radeon_crtc_init(rdev->ddev, i);
1626 }
1627
1628 /* okay we should have all the bios connectors */
1629 ret = radeon_setup_enc_conn(rdev->ddev);
1630 if (!ret) {
1631 return ret;
1632 }
1633
1634 /* init dig PHYs, disp eng pll */
1635 if (rdev->is_atom_bios) {
1636 radeon_atom_encoder_init(rdev);
1637 radeon_atom_disp_eng_pll_init(rdev);
1638 }
1639
1640 /* initialize hpd */
1641 radeon_hpd_init(rdev);
1642
1643 /* setup afmt */
1644 radeon_afmt_init(rdev);
1645
1646 radeon_fbdev_init(rdev);
1647 drm_kms_helper_poll_init(rdev->ddev);
1648
1649 /* do pm late init */
1650 ret = radeon_pm_late_init(rdev);
1651
1652 return 0;
1653 }
1654
radeon_modeset_fini(struct radeon_device * rdev)1655 void radeon_modeset_fini(struct radeon_device *rdev)
1656 {
1657 if (rdev->mode_info.mode_config_initialized) {
1658 drm_kms_helper_poll_fini(rdev->ddev);
1659 radeon_hpd_fini(rdev);
1660 drm_helper_force_disable_all(rdev->ddev);
1661 radeon_fbdev_fini(rdev);
1662 radeon_afmt_fini(rdev);
1663 drm_mode_config_cleanup(rdev->ddev);
1664 rdev->mode_info.mode_config_initialized = false;
1665 }
1666
1667 kfree(rdev->mode_info.bios_hardcoded_edid);
1668
1669 /* free i2c buses */
1670 radeon_i2c_fini(rdev);
1671 }
1672
is_hdtv_mode(const struct drm_display_mode * mode)1673 static bool is_hdtv_mode(const struct drm_display_mode *mode)
1674 {
1675 /* try and guess if this is a tv or a monitor */
1676 if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
1677 (mode->vdisplay == 576) || /* 576p */
1678 (mode->vdisplay == 720) || /* 720p */
1679 (mode->vdisplay == 1080)) /* 1080p */
1680 return true;
1681 else
1682 return false;
1683 }
1684
radeon_crtc_scaling_mode_fixup(struct drm_crtc * crtc,const struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)1685 bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
1686 const struct drm_display_mode *mode,
1687 struct drm_display_mode *adjusted_mode)
1688 {
1689 struct drm_device *dev = crtc->dev;
1690 struct radeon_device *rdev = dev->dev_private;
1691 struct drm_encoder *encoder;
1692 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1693 struct radeon_encoder *radeon_encoder;
1694 struct drm_connector *connector;
1695 bool first = true;
1696 u32 src_v = 1, dst_v = 1;
1697 u32 src_h = 1, dst_h = 1;
1698
1699 radeon_crtc->h_border = 0;
1700 radeon_crtc->v_border = 0;
1701
1702 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1703 if (encoder->crtc != crtc)
1704 continue;
1705 radeon_encoder = to_radeon_encoder(encoder);
1706 connector = radeon_get_connector_for_encoder(encoder);
1707
1708 if (first) {
1709 /* set scaling */
1710 if (radeon_encoder->rmx_type == RMX_OFF)
1711 radeon_crtc->rmx_type = RMX_OFF;
1712 else if (mode->hdisplay < radeon_encoder->native_mode.hdisplay ||
1713 mode->vdisplay < radeon_encoder->native_mode.vdisplay)
1714 radeon_crtc->rmx_type = radeon_encoder->rmx_type;
1715 else
1716 radeon_crtc->rmx_type = RMX_OFF;
1717 /* copy native mode */
1718 memcpy(&radeon_crtc->native_mode,
1719 &radeon_encoder->native_mode,
1720 sizeof(struct drm_display_mode));
1721 src_v = crtc->mode.vdisplay;
1722 dst_v = radeon_crtc->native_mode.vdisplay;
1723 src_h = crtc->mode.hdisplay;
1724 dst_h = radeon_crtc->native_mode.hdisplay;
1725
1726 /* fix up for overscan on hdmi */
1727 if (ASIC_IS_AVIVO(rdev) &&
1728 (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
1729 ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
1730 ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
1731 drm_detect_hdmi_monitor(radeon_connector_edid(connector)) &&
1732 is_hdtv_mode(mode)))) {
1733 if (radeon_encoder->underscan_hborder != 0)
1734 radeon_crtc->h_border = radeon_encoder->underscan_hborder;
1735 else
1736 radeon_crtc->h_border = (mode->hdisplay >> 5) + 16;
1737 if (radeon_encoder->underscan_vborder != 0)
1738 radeon_crtc->v_border = radeon_encoder->underscan_vborder;
1739 else
1740 radeon_crtc->v_border = (mode->vdisplay >> 5) + 16;
1741 radeon_crtc->rmx_type = RMX_FULL;
1742 src_v = crtc->mode.vdisplay;
1743 dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2);
1744 src_h = crtc->mode.hdisplay;
1745 dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2);
1746 }
1747 first = false;
1748 } else {
1749 if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {
1750 /* WARNING: Right now this can't happen but
1751 * in the future we need to check that scaling
1752 * are consistent across different encoder
1753 * (ie all encoder can work with the same
1754 * scaling).
1755 */
1756 DRM_ERROR("Scaling not consistent across encoder.\n");
1757 return false;
1758 }
1759 }
1760 }
1761 if (radeon_crtc->rmx_type != RMX_OFF) {
1762 fixed20_12 a, b;
1763 a.full = dfixed_const(src_v);
1764 b.full = dfixed_const(dst_v);
1765 radeon_crtc->vsc.full = dfixed_div(a, b);
1766 a.full = dfixed_const(src_h);
1767 b.full = dfixed_const(dst_h);
1768 radeon_crtc->hsc.full = dfixed_div(a, b);
1769 } else {
1770 radeon_crtc->vsc.full = dfixed_const(1);
1771 radeon_crtc->hsc.full = dfixed_const(1);
1772 }
1773 return true;
1774 }
1775
1776 /*
1777 * Retrieve current video scanout position of crtc on a given gpu, and
1778 * an optional accurate timestamp of when query happened.
1779 *
1780 * \param dev Device to query.
1781 * \param crtc Crtc to query.
1782 * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
1783 * For driver internal use only also supports these flags:
1784 *
1785 * USE_REAL_VBLANKSTART to use the real start of vblank instead
1786 * of a fudged earlier start of vblank.
1787 *
1788 * GET_DISTANCE_TO_VBLANKSTART to return distance to the
1789 * fudged earlier start of vblank in *vpos and the distance
1790 * to true start of vblank in *hpos.
1791 *
1792 * \param *vpos Location where vertical scanout position should be stored.
1793 * \param *hpos Location where horizontal scanout position should go.
1794 * \param *stime Target location for timestamp taken immediately before
1795 * scanout position query. Can be NULL to skip timestamp.
1796 * \param *etime Target location for timestamp taken immediately after
1797 * scanout position query. Can be NULL to skip timestamp.
1798 *
1799 * Returns vpos as a positive number while in active scanout area.
1800 * Returns vpos as a negative number inside vblank, counting the number
1801 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
1802 * until start of active scanout / end of vblank."
1803 *
1804 * \return Flags, or'ed together as follows:
1805 *
1806 * DRM_SCANOUTPOS_VALID = Query successful.
1807 * DRM_SCANOUTPOS_INVBL = Inside vblank.
1808 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
1809 * this flag means that returned position may be offset by a constant but
1810 * unknown small number of scanlines wrt. real scanout position.
1811 *
1812 */
radeon_get_crtc_scanoutpos(struct drm_device * dev,unsigned int pipe,unsigned int flags,int * vpos,int * hpos,ktime_t * stime,ktime_t * etime,const struct drm_display_mode * mode)1813 int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
1814 unsigned int flags, int *vpos, int *hpos,
1815 ktime_t *stime, ktime_t *etime,
1816 const struct drm_display_mode *mode)
1817 {
1818 u32 stat_crtc = 0, vbl = 0, position = 0;
1819 int vbl_start, vbl_end, vtotal, ret = 0;
1820 bool in_vbl = true;
1821
1822 struct radeon_device *rdev = dev->dev_private;
1823
1824 /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
1825
1826 /* Get optional system timestamp before query. */
1827 if (stime)
1828 *stime = ktime_get();
1829
1830 if (ASIC_IS_DCE4(rdev)) {
1831 if (pipe == 0) {
1832 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1833 EVERGREEN_CRTC0_REGISTER_OFFSET);
1834 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1835 EVERGREEN_CRTC0_REGISTER_OFFSET);
1836 ret |= DRM_SCANOUTPOS_VALID;
1837 }
1838 if (pipe == 1) {
1839 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1840 EVERGREEN_CRTC1_REGISTER_OFFSET);
1841 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1842 EVERGREEN_CRTC1_REGISTER_OFFSET);
1843 ret |= DRM_SCANOUTPOS_VALID;
1844 }
1845 if (pipe == 2) {
1846 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1847 EVERGREEN_CRTC2_REGISTER_OFFSET);
1848 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1849 EVERGREEN_CRTC2_REGISTER_OFFSET);
1850 ret |= DRM_SCANOUTPOS_VALID;
1851 }
1852 if (pipe == 3) {
1853 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1854 EVERGREEN_CRTC3_REGISTER_OFFSET);
1855 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1856 EVERGREEN_CRTC3_REGISTER_OFFSET);
1857 ret |= DRM_SCANOUTPOS_VALID;
1858 }
1859 if (pipe == 4) {
1860 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1861 EVERGREEN_CRTC4_REGISTER_OFFSET);
1862 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1863 EVERGREEN_CRTC4_REGISTER_OFFSET);
1864 ret |= DRM_SCANOUTPOS_VALID;
1865 }
1866 if (pipe == 5) {
1867 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1868 EVERGREEN_CRTC5_REGISTER_OFFSET);
1869 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1870 EVERGREEN_CRTC5_REGISTER_OFFSET);
1871 ret |= DRM_SCANOUTPOS_VALID;
1872 }
1873 } else if (ASIC_IS_AVIVO(rdev)) {
1874 if (pipe == 0) {
1875 vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END);
1876 position = RREG32(AVIVO_D1CRTC_STATUS_POSITION);
1877 ret |= DRM_SCANOUTPOS_VALID;
1878 }
1879 if (pipe == 1) {
1880 vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END);
1881 position = RREG32(AVIVO_D2CRTC_STATUS_POSITION);
1882 ret |= DRM_SCANOUTPOS_VALID;
1883 }
1884 } else {
1885 /* Pre-AVIVO: Different encoding of scanout pos and vblank interval. */
1886 if (pipe == 0) {
1887 /* Assume vbl_end == 0, get vbl_start from
1888 * upper 16 bits.
1889 */
1890 vbl = (RREG32(RADEON_CRTC_V_TOTAL_DISP) &
1891 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1892 /* Only retrieve vpos from upper 16 bits, set hpos == 0. */
1893 position = (RREG32(RADEON_CRTC_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1894 stat_crtc = RREG32(RADEON_CRTC_STATUS);
1895 if (!(stat_crtc & 1))
1896 in_vbl = false;
1897
1898 ret |= DRM_SCANOUTPOS_VALID;
1899 }
1900 if (pipe == 1) {
1901 vbl = (RREG32(RADEON_CRTC2_V_TOTAL_DISP) &
1902 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1903 position = (RREG32(RADEON_CRTC2_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1904 stat_crtc = RREG32(RADEON_CRTC2_STATUS);
1905 if (!(stat_crtc & 1))
1906 in_vbl = false;
1907
1908 ret |= DRM_SCANOUTPOS_VALID;
1909 }
1910 }
1911
1912 /* Get optional system timestamp after query. */
1913 if (etime)
1914 *etime = ktime_get();
1915
1916 /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
1917
1918 /* Decode into vertical and horizontal scanout position. */
1919 *vpos = position & 0x1fff;
1920 *hpos = (position >> 16) & 0x1fff;
1921
1922 /* Valid vblank area boundaries from gpu retrieved? */
1923 if (vbl > 0) {
1924 /* Yes: Decode. */
1925 ret |= DRM_SCANOUTPOS_ACCURATE;
1926 vbl_start = vbl & 0x1fff;
1927 vbl_end = (vbl >> 16) & 0x1fff;
1928 }
1929 else {
1930 /* No: Fake something reasonable which gives at least ok results. */
1931 vbl_start = mode->crtc_vdisplay;
1932 vbl_end = 0;
1933 }
1934
1935 /* Called from driver internal vblank counter query code? */
1936 if (flags & GET_DISTANCE_TO_VBLANKSTART) {
1937 /* Caller wants distance from real vbl_start in *hpos */
1938 *hpos = *vpos - vbl_start;
1939 }
1940
1941 /* Fudge vblank to start a few scanlines earlier to handle the
1942 * problem that vblank irqs fire a few scanlines before start
1943 * of vblank. Some driver internal callers need the true vblank
1944 * start to be used and signal this via the USE_REAL_VBLANKSTART flag.
1945 *
1946 * The cause of the "early" vblank irq is that the irq is triggered
1947 * by the line buffer logic when the line buffer read position enters
1948 * the vblank, whereas our crtc scanout position naturally lags the
1949 * line buffer read position.
1950 */
1951 if (!(flags & USE_REAL_VBLANKSTART))
1952 vbl_start -= rdev->mode_info.crtcs[pipe]->lb_vblank_lead_lines;
1953
1954 /* Test scanout position against vblank region. */
1955 if ((*vpos < vbl_start) && (*vpos >= vbl_end))
1956 in_vbl = false;
1957
1958 /* In vblank? */
1959 if (in_vbl)
1960 ret |= DRM_SCANOUTPOS_IN_VBLANK;
1961
1962 /* Called from driver internal vblank counter query code? */
1963 if (flags & GET_DISTANCE_TO_VBLANKSTART) {
1964 /* Caller wants distance from fudged earlier vbl_start */
1965 *vpos -= vbl_start;
1966 return ret;
1967 }
1968
1969 /* Check if inside vblank area and apply corrective offsets:
1970 * vpos will then be >=0 in video scanout area, but negative
1971 * within vblank area, counting down the number of lines until
1972 * start of scanout.
1973 */
1974
1975 /* Inside "upper part" of vblank area? Apply corrective offset if so: */
1976 if (in_vbl && (*vpos >= vbl_start)) {
1977 vtotal = mode->crtc_vtotal;
1978 *vpos = *vpos - vtotal;
1979 }
1980
1981 /* Correct for shifted end of vbl at vbl_end. */
1982 *vpos = *vpos - vbl_end;
1983
1984 return ret;
1985 }
1986
1987 bool
radeon_get_crtc_scanout_position(struct drm_crtc * crtc,bool in_vblank_irq,int * vpos,int * hpos,ktime_t * stime,ktime_t * etime,const struct drm_display_mode * mode)1988 radeon_get_crtc_scanout_position(struct drm_crtc *crtc,
1989 bool in_vblank_irq, int *vpos, int *hpos,
1990 ktime_t *stime, ktime_t *etime,
1991 const struct drm_display_mode *mode)
1992 {
1993 struct drm_device *dev = crtc->dev;
1994 unsigned int pipe = crtc->index;
1995
1996 return radeon_get_crtc_scanoutpos(dev, pipe, 0, vpos, hpos,
1997 stime, etime, mode);
1998 }
1999
