drm/radeon: Sync to Linux 3.11
[dragonfly.git] / sys / dev / drm / radeon / radeon_irq_kms.c
CommitLineData
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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 * $FreeBSD: head/sys/dev/drm2/radeon/radeon_irq_kms.c 254885 2013-08-25 19:37:15Z dumbbell $
29 */
30
31#include <drm/drmP.h>
32#include <drm/drm_crtc_helper.h>
33#include <uapi_drm/radeon_drm.h>
34#include "radeon_reg.h"
35#include "radeon_irq_kms.h"
36#include "radeon.h"
37#include "atom.h"
38
39#define RADEON_WAIT_IDLE_TIMEOUT 200
40
41/**
42 * radeon_driver_irq_handler_kms - irq handler for KMS
43 *
44 * @DRM_IRQ_ARGS: args
45 *
46 * This is the irq handler for the radeon KMS driver (all asics).
47 * radeon_irq_process is a macro that points to the per-asic
48 * irq handler callback.
49 */
50irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
51{
52 struct drm_device *dev = (struct drm_device *) arg;
53 struct radeon_device *rdev = dev->dev_private;
54
55 return radeon_irq_process(rdev);
56}
57
58/*
59 * Handle hotplug events outside the interrupt handler proper.
60 */
61/**
62 * radeon_hotplug_work_func - display hotplug work handler
63 *
64 * @work: work struct
65 *
66 * This is the hot plug event work handler (all asics).
67 * The work gets scheduled from the irq handler if there
68 * was a hot plug interrupt. It walks the connector table
69 * and calls the hotplug handler for each one, then sends
70 * a drm hotplug event to alert userspace.
71 */
72static void radeon_hotplug_work_func(void *arg, int pending)
73{
74 struct radeon_device *rdev = arg;
75 struct drm_device *dev = rdev->ddev;
76 struct drm_mode_config *mode_config = &dev->mode_config;
77 struct drm_connector *connector;
78
79 if (mode_config->num_connector) {
80 list_for_each_entry(connector, &mode_config->connector_list, head)
81 radeon_connector_hotplug(connector);
82 }
83 /* Just fire off a uevent and let userspace tell us what to do */
84 drm_helper_hpd_irq_event(dev);
85}
86
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87/**
88 * radeon_irq_reset_work_func - execute gpu reset
89 *
90 * @work: work struct
91 *
92 * Execute scheduled gpu reset (cayman+).
93 * This function is called when the irq handler
94 * thinks we need a gpu reset.
95 */
96static void radeon_irq_reset_work_func(void *arg, int pending)
97{
98 struct radeon_device *rdev = arg;
99
100 radeon_gpu_reset(rdev);
101}
102
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103/**
104 * radeon_driver_irq_preinstall_kms - drm irq preinstall callback
105 *
106 * @dev: drm dev pointer
107 *
108 * Gets the hw ready to enable irqs (all asics).
109 * This function disables all interrupt sources on the GPU.
110 */
111void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
112{
113 struct radeon_device *rdev = dev->dev_private;
114 unsigned i;
115
116 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
117 /* Disable *all* interrupts */
118 for (i = 0; i < RADEON_NUM_RINGS; i++)
119 atomic_set(&rdev->irq.ring_int[i], 0);
57e252bf 120 rdev->irq.dpm_thermal = false;
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121 for (i = 0; i < RADEON_MAX_HPD_PINS; i++)
122 rdev->irq.hpd[i] = false;
123 for (i = 0; i < RADEON_MAX_CRTCS; i++) {
124 rdev->irq.crtc_vblank_int[i] = false;
125 atomic_set(&rdev->irq.pflip[i], 0);
126 rdev->irq.afmt[i] = false;
127 }
128 radeon_irq_set(rdev);
129 lockmgr(&rdev->irq.lock, LK_RELEASE);
130 /* Clear bits */
131 radeon_irq_process(rdev);
132}
133
134/**
135 * radeon_driver_irq_postinstall_kms - drm irq preinstall callback
136 *
137 * @dev: drm dev pointer
138 *
139 * Handles stuff to be done after enabling irqs (all asics).
140 * Returns 0 on success.
141 */
142int radeon_driver_irq_postinstall_kms(struct drm_device *dev)
143{
144 dev->max_vblank_count = 0x001fffff;
145 return 0;
146}
147
148/**
149 * radeon_driver_irq_uninstall_kms - drm irq uninstall callback
150 *
151 * @dev: drm dev pointer
152 *
153 * This function disables all interrupt sources on the GPU (all asics).
154 */
155void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
156{
157 struct radeon_device *rdev = dev->dev_private;
158 unsigned i;
159
160 if (rdev == NULL) {
161 return;
162 }
163 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
164 /* Disable *all* interrupts */
165 for (i = 0; i < RADEON_NUM_RINGS; i++)
166 atomic_set(&rdev->irq.ring_int[i], 0);
57e252bf 167 rdev->irq.dpm_thermal = false;
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168 for (i = 0; i < RADEON_MAX_HPD_PINS; i++)
169 rdev->irq.hpd[i] = false;
170 for (i = 0; i < RADEON_MAX_CRTCS; i++) {
171 rdev->irq.crtc_vblank_int[i] = false;
172 atomic_set(&rdev->irq.pflip[i], 0);
173 rdev->irq.afmt[i] = false;
174 }
175 radeon_irq_set(rdev);
176 lockmgr(&rdev->irq.lock, LK_RELEASE);
177}
178
179/**
180 * radeon_msi_ok - asic specific msi checks
181 *
182 * @rdev: radeon device pointer
183 *
184 * Handles asic specific MSI checks to determine if
185 * MSIs should be enabled on a particular chip (all asics).
186 * Returns true if MSIs should be enabled, false if MSIs
187 * should not be enabled.
188 */
189int radeon_msi_ok(struct drm_device *dev, unsigned long flags)
190{
191 int family;
192
193 family = flags & RADEON_FAMILY_MASK;
194
195 /* RV370/RV380 was first asic with MSI support */
196 if (family < CHIP_RV380)
197 return false;
198
199 /* MSIs don't work on AGP */
200 if (drm_device_is_agp(dev))
201 return false;
202
203 /* force MSI on */
204 if (radeon_msi == 1)
205 return true;
206 else if (radeon_msi == 0)
207 return false;
208
209 /* Quirks */
210 /* HP RS690 only seems to work with MSIs. */
211 if ((dev->pci_device == 0x791f) &&
212 (dev->pci_subvendor == 0x103c) &&
213 (dev->pci_subdevice == 0x30c2))
214 return true;
215
216 /* Dell RS690 only seems to work with MSIs. */
217 if ((dev->pci_device == 0x791f) &&
218 (dev->pci_subvendor == 0x1028) &&
219 (dev->pci_subdevice == 0x01fc))
220 return true;
221
222 /* Dell RS690 only seems to work with MSIs. */
223 if ((dev->pci_device == 0x791f) &&
224 (dev->pci_subvendor == 0x1028) &&
225 (dev->pci_subdevice == 0x01fd))
226 return true;
227
228 /* Gateway RS690 only seems to work with MSIs. */
229 if ((dev->pci_device == 0x791f) &&
230 (dev->pci_subvendor == 0x107b) &&
231 (dev->pci_subdevice == 0x0185))
232 return true;
233
234 /* try and enable MSIs by default on all RS690s */
235 if (family == CHIP_RS690)
236 return true;
237
238 /* RV515 seems to have MSI issues where it loses
239 * MSI rearms occasionally. This leads to lockups and freezes.
240 * disable it by default.
241 */
242 if (family == CHIP_RV515)
243 return false;
244 if (flags & RADEON_IS_IGP) {
245 /* APUs work fine with MSIs */
246 if (family >= CHIP_PALM)
247 return true;
248 /* lots of IGPs have problems with MSIs */
249 return false;
250 }
251
252 return true;
253}
254
255/**
256 * radeon_irq_kms_init - init driver interrupt info
257 *
258 * @rdev: radeon device pointer
259 *
260 * Sets up the work irq handlers, vblank init, MSIs, etc. (all asics).
261 * Returns 0 for success, error for failure.
262 */
263int radeon_irq_kms_init(struct radeon_device *rdev)
264{
265 int r = 0;
266
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267
268 lockinit(&rdev->irq.lock, "drm__radeon_device__irq__lock", 0, LK_CANRECURSE);
269 r = drm_vblank_init(rdev->ddev, rdev->num_crtc);
270 if (r) {
271 return r;
272 }
273 /* enable msi */
274 rdev->msi_enabled = rdev->ddev->msi_enabled;
275
276 rdev->irq.installed = true;
277 DRM_UNLOCK(rdev->ddev);
278 r = drm_irq_install(rdev->ddev);
279 DRM_LOCK(rdev->ddev);
280 if (r) {
281 rdev->irq.installed = false;
282 return r;
283 }
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284
285 TASK_INIT(&rdev->hotplug_work, 0, radeon_hotplug_work_func, rdev);
286 TASK_INIT(&rdev->audio_work, 0, r600_audio_update_hdmi, rdev);
287 TASK_INIT(&rdev->reset_work, 0, radeon_irq_reset_work_func, rdev);
288
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289 DRM_INFO("radeon: irq initialized.\n");
290 return 0;
291}
292
293/**
f43cf1b1 294 * radeon_irq_kms_fini - tear down driver interrupt info
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295 *
296 * @rdev: radeon device pointer
297 *
298 * Tears down the work irq handlers, vblank handlers, MSIs, etc. (all asics).
299 */
300void radeon_irq_kms_fini(struct radeon_device *rdev)
301{
302 drm_vblank_cleanup(rdev->ddev);
303 if (rdev->irq.installed) {
304 drm_irq_uninstall(rdev->ddev);
305 rdev->irq.installed = false;
306 }
307 taskqueue_drain(rdev->tq, &rdev->hotplug_work);
308}
309
310/**
311 * radeon_irq_kms_sw_irq_get - enable software interrupt
312 *
313 * @rdev: radeon device pointer
314 * @ring: ring whose interrupt you want to enable
315 *
316 * Enables the software interrupt for a specific ring (all asics).
317 * The software interrupt is generally used to signal a fence on
318 * a particular ring.
319 */
320void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev, int ring)
321{
322 if (!rdev->ddev->irq_enabled)
323 return;
324
325 if (atomic_inc_return(&rdev->irq.ring_int[ring]) == 1) {
326 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
327 radeon_irq_set(rdev);
328 lockmgr(&rdev->irq.lock, LK_RELEASE);
329 }
330}
331
332/**
333 * radeon_irq_kms_sw_irq_put - disable software interrupt
334 *
335 * @rdev: radeon device pointer
336 * @ring: ring whose interrupt you want to disable
337 *
338 * Disables the software interrupt for a specific ring (all asics).
339 * The software interrupt is generally used to signal a fence on
340 * a particular ring.
341 */
342void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev, int ring)
343{
344 if (!rdev->ddev->irq_enabled)
345 return;
346
347 if (atomic_dec_and_test(&rdev->irq.ring_int[ring])) {
348 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
349 radeon_irq_set(rdev);
350 lockmgr(&rdev->irq.lock, LK_RELEASE);
351 }
352}
353
354/**
355 * radeon_irq_kms_pflip_irq_get - enable pageflip interrupt
356 *
357 * @rdev: radeon device pointer
358 * @crtc: crtc whose interrupt you want to enable
359 *
360 * Enables the pageflip interrupt for a specific crtc (all asics).
361 * For pageflips we use the vblank interrupt source.
362 */
363void radeon_irq_kms_pflip_irq_get(struct radeon_device *rdev, int crtc)
364{
365 if (crtc < 0 || crtc >= rdev->num_crtc)
366 return;
367
368 if (!rdev->ddev->irq_enabled)
369 return;
370
371 if (atomic_inc_return(&rdev->irq.pflip[crtc]) == 1) {
372 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
373 radeon_irq_set(rdev);
374 lockmgr(&rdev->irq.lock, LK_RELEASE);
375 }
376}
377
378/**
379 * radeon_irq_kms_pflip_irq_put - disable pageflip interrupt
380 *
381 * @rdev: radeon device pointer
382 * @crtc: crtc whose interrupt you want to disable
383 *
384 * Disables the pageflip interrupt for a specific crtc (all asics).
385 * For pageflips we use the vblank interrupt source.
386 */
387void radeon_irq_kms_pflip_irq_put(struct radeon_device *rdev, int crtc)
388{
389 if (crtc < 0 || crtc >= rdev->num_crtc)
390 return;
391
392 if (!rdev->ddev->irq_enabled)
393 return;
394
395 if (atomic_dec_and_test(&rdev->irq.pflip[crtc])) {
396 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
397 radeon_irq_set(rdev);
398 lockmgr(&rdev->irq.lock, LK_RELEASE);
399 }
400}
401
402/**
403 * radeon_irq_kms_enable_afmt - enable audio format change interrupt
404 *
405 * @rdev: radeon device pointer
406 * @block: afmt block whose interrupt you want to enable
407 *
408 * Enables the afmt change interrupt for a specific afmt block (all asics).
409 */
410void radeon_irq_kms_enable_afmt(struct radeon_device *rdev, int block)
411{
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412 if (!rdev->ddev->irq_enabled)
413 return;
414
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415 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
416 rdev->irq.afmt[block] = true;
417 radeon_irq_set(rdev);
418 lockmgr(&rdev->irq.lock, LK_RELEASE);
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419}
420
421/**
422 * radeon_irq_kms_disable_afmt - disable audio format change interrupt
423 *
424 * @rdev: radeon device pointer
425 * @block: afmt block whose interrupt you want to disable
426 *
427 * Disables the afmt change interrupt for a specific afmt block (all asics).
428 */
429void radeon_irq_kms_disable_afmt(struct radeon_device *rdev, int block)
430{
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431 if (!rdev->ddev->irq_enabled)
432 return;
433
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434 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
435 rdev->irq.afmt[block] = false;
436 radeon_irq_set(rdev);
437 lockmgr(&rdev->irq.lock, LK_RELEASE);
438}
439
440/**
441 * radeon_irq_kms_enable_hpd - enable hotplug detect interrupt
442 *
443 * @rdev: radeon device pointer
444 * @hpd_mask: mask of hpd pins you want to enable.
445 *
446 * Enables the hotplug detect interrupt for a specific hpd pin (all asics).
447 */
448void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
449{
450 int i;
451
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452 if (!rdev->ddev->irq_enabled)
453 return;
454
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455 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
456 for (i = 0; i < RADEON_MAX_HPD_PINS; ++i)
457 rdev->irq.hpd[i] |= !!(hpd_mask & (1 << i));
458 radeon_irq_set(rdev);
459 lockmgr(&rdev->irq.lock, LK_RELEASE);
460}
461
462/**
463 * radeon_irq_kms_disable_hpd - disable hotplug detect interrupt
464 *
465 * @rdev: radeon device pointer
466 * @hpd_mask: mask of hpd pins you want to disable.
467 *
468 * Disables the hotplug detect interrupt for a specific hpd pin (all asics).
469 */
470void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask)
471{
472 int i;
473
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474 if (!rdev->ddev->irq_enabled)
475 return;
476
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477 lockmgr(&rdev->irq.lock, LK_EXCLUSIVE);
478 for (i = 0; i < RADEON_MAX_HPD_PINS; ++i)
479 rdev->irq.hpd[i] &= !(hpd_mask & (1 << i));
480 radeon_irq_set(rdev);
481 lockmgr(&rdev->irq.lock, LK_RELEASE);
482}
483