2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "msm_fence.h"
22 #include "msm_gpu_trace.h"
23 #include "adreno/adreno_gpu.h"
25 #include <generated/utsrelease.h>
26 #include <linux/string_helpers.h>
27 #include <linux/pm_opp.h>
28 #include <linux/devfreq.h>
29 #include <linux/devcoredump.h>
35 static int msm_devfreq_target(struct device *dev, unsigned long *freq,
38 struct msm_gpu *gpu = platform_get_drvdata(to_platform_device(dev));
39 struct dev_pm_opp *opp;
41 opp = devfreq_recommended_opp(dev, freq, flags);
46 if (gpu->funcs->gpu_set_freq)
47 gpu->funcs->gpu_set_freq(gpu, (u64)*freq);
49 clk_set_rate(gpu->core_clk, *freq);
56 static int msm_devfreq_get_dev_status(struct device *dev,
57 struct devfreq_dev_status *status)
59 struct msm_gpu *gpu = platform_get_drvdata(to_platform_device(dev));
62 if (gpu->funcs->gpu_get_freq)
63 status->current_frequency = gpu->funcs->gpu_get_freq(gpu);
65 status->current_frequency = clk_get_rate(gpu->core_clk);
67 status->busy_time = gpu->funcs->gpu_busy(gpu);
70 status->total_time = ktime_us_delta(time, gpu->devfreq.time);
71 gpu->devfreq.time = time;
76 static int msm_devfreq_get_cur_freq(struct device *dev, unsigned long *freq)
78 struct msm_gpu *gpu = platform_get_drvdata(to_platform_device(dev));
80 if (gpu->funcs->gpu_get_freq)
81 *freq = gpu->funcs->gpu_get_freq(gpu);
83 *freq = clk_get_rate(gpu->core_clk);
88 static struct devfreq_dev_profile msm_devfreq_profile = {
90 .target = msm_devfreq_target,
91 .get_dev_status = msm_devfreq_get_dev_status,
92 .get_cur_freq = msm_devfreq_get_cur_freq,
95 static void msm_devfreq_init(struct msm_gpu *gpu)
97 /* We need target support to do devfreq */
98 if (!gpu->funcs->gpu_busy)
101 msm_devfreq_profile.initial_freq = gpu->fast_rate;
104 * Don't set the freq_table or max_state and let devfreq build the table
108 gpu->devfreq.devfreq = devm_devfreq_add_device(&gpu->pdev->dev,
109 &msm_devfreq_profile, "simple_ondemand", NULL);
111 if (IS_ERR(gpu->devfreq.devfreq)) {
112 DRM_DEV_ERROR(&gpu->pdev->dev, "Couldn't initialize GPU devfreq\n");
113 gpu->devfreq.devfreq = NULL;
116 devfreq_suspend_device(gpu->devfreq.devfreq);
119 static int enable_pwrrail(struct msm_gpu *gpu)
121 struct drm_device *dev = gpu->dev;
125 ret = regulator_enable(gpu->gpu_reg);
127 DRM_DEV_ERROR(dev->dev, "failed to enable 'gpu_reg': %d\n", ret);
133 ret = regulator_enable(gpu->gpu_cx);
135 DRM_DEV_ERROR(dev->dev, "failed to enable 'gpu_cx': %d\n", ret);
143 static int disable_pwrrail(struct msm_gpu *gpu)
146 regulator_disable(gpu->gpu_cx);
148 regulator_disable(gpu->gpu_reg);
152 static int enable_clk(struct msm_gpu *gpu)
154 if (gpu->core_clk && gpu->fast_rate)
155 clk_set_rate(gpu->core_clk, gpu->fast_rate);
157 /* Set the RBBM timer rate to 19.2Mhz */
158 if (gpu->rbbmtimer_clk)
159 clk_set_rate(gpu->rbbmtimer_clk, 19200000);
161 return clk_bulk_prepare_enable(gpu->nr_clocks, gpu->grp_clks);
164 static int disable_clk(struct msm_gpu *gpu)
166 clk_bulk_disable_unprepare(gpu->nr_clocks, gpu->grp_clks);
169 * Set the clock to a deliberately low rate. On older targets the clock
170 * speed had to be non zero to avoid problems. On newer targets this
171 * will be rounded down to zero anyway so it all works out.
174 clk_set_rate(gpu->core_clk, 27000000);
176 if (gpu->rbbmtimer_clk)
177 clk_set_rate(gpu->rbbmtimer_clk, 0);
182 static int enable_axi(struct msm_gpu *gpu)
185 clk_prepare_enable(gpu->ebi1_clk);
189 static int disable_axi(struct msm_gpu *gpu)
192 clk_disable_unprepare(gpu->ebi1_clk);
196 void msm_gpu_resume_devfreq(struct msm_gpu *gpu)
198 gpu->devfreq.busy_cycles = 0;
199 gpu->devfreq.time = ktime_get();
201 devfreq_resume_device(gpu->devfreq.devfreq);
204 int msm_gpu_pm_resume(struct msm_gpu *gpu)
208 DBG("%s", gpu->name);
210 ret = enable_pwrrail(gpu);
214 ret = enable_clk(gpu);
218 ret = enable_axi(gpu);
222 msm_gpu_resume_devfreq(gpu);
224 gpu->needs_hw_init = true;
229 int msm_gpu_pm_suspend(struct msm_gpu *gpu)
233 DBG("%s", gpu->name);
235 devfreq_suspend_device(gpu->devfreq.devfreq);
237 ret = disable_axi(gpu);
241 ret = disable_clk(gpu);
245 ret = disable_pwrrail(gpu);
252 int msm_gpu_hw_init(struct msm_gpu *gpu)
256 WARN_ON(!mutex_is_locked(&gpu->dev->struct_mutex));
258 if (!gpu->needs_hw_init)
261 disable_irq(gpu->irq);
262 ret = gpu->funcs->hw_init(gpu);
264 gpu->needs_hw_init = false;
265 enable_irq(gpu->irq);
270 #ifdef CONFIG_DEV_COREDUMP
271 static ssize_t msm_gpu_devcoredump_read(char *buffer, loff_t offset,
272 size_t count, void *data, size_t datalen)
274 struct msm_gpu *gpu = data;
275 struct drm_print_iterator iter;
276 struct drm_printer p;
277 struct msm_gpu_state *state;
279 state = msm_gpu_crashstate_get(gpu);
288 p = drm_coredump_printer(&iter);
290 drm_printf(&p, "---\n");
291 drm_printf(&p, "kernel: " UTS_RELEASE "\n");
292 drm_printf(&p, "module: " KBUILD_MODNAME "\n");
293 drm_printf(&p, "time: %lld.%09ld\n",
294 state->time.tv_sec, state->time.tv_nsec);
296 drm_printf(&p, "comm: %s\n", state->comm);
298 drm_printf(&p, "cmdline: %s\n", state->cmd);
300 gpu->funcs->show(gpu, state, &p);
302 msm_gpu_crashstate_put(gpu);
304 return count - iter.remain;
307 static void msm_gpu_devcoredump_free(void *data)
309 struct msm_gpu *gpu = data;
311 msm_gpu_crashstate_put(gpu);
314 static void msm_gpu_crashstate_get_bo(struct msm_gpu_state *state,
315 struct msm_gem_object *obj, u64 iova, u32 flags)
317 struct msm_gpu_state_bo *state_bo = &state->bos[state->nr_bos];
319 /* Don't record write only objects */
320 state_bo->size = obj->base.size;
321 state_bo->iova = iova;
323 /* Only store data for non imported buffer objects marked for read */
324 if ((flags & MSM_SUBMIT_BO_READ) && !obj->base.import_attach) {
327 state_bo->data = kvmalloc(obj->base.size, GFP_KERNEL);
331 ptr = msm_gem_get_vaddr_active(&obj->base);
333 kvfree(state_bo->data);
334 state_bo->data = NULL;
338 memcpy(state_bo->data, ptr, obj->base.size);
339 msm_gem_put_vaddr(&obj->base);
345 static void msm_gpu_crashstate_capture(struct msm_gpu *gpu,
346 struct msm_gem_submit *submit, char *comm, char *cmd)
348 struct msm_gpu_state *state;
350 /* Check if the target supports capturing crash state */
351 if (!gpu->funcs->gpu_state_get)
354 /* Only save one crash state at a time */
358 state = gpu->funcs->gpu_state_get(gpu);
359 if (IS_ERR_OR_NULL(state))
362 /* Fill in the additional crash state information */
363 state->comm = kstrdup(comm, GFP_KERNEL);
364 state->cmd = kstrdup(cmd, GFP_KERNEL);
369 state->bos = kcalloc(submit->nr_cmds,
370 sizeof(struct msm_gpu_state_bo), GFP_KERNEL);
372 for (i = 0; state->bos && i < submit->nr_cmds; i++) {
373 int idx = submit->cmd[i].idx;
375 msm_gpu_crashstate_get_bo(state, submit->bos[idx].obj,
376 submit->bos[idx].iova, submit->bos[idx].flags);
380 /* Set the active crash state to be dumped on failure */
381 gpu->crashstate = state;
383 /* FIXME: Release the crashstate if this errors out? */
384 dev_coredumpm(gpu->dev->dev, THIS_MODULE, gpu, 0, GFP_KERNEL,
385 msm_gpu_devcoredump_read, msm_gpu_devcoredump_free);
388 static void msm_gpu_crashstate_capture(struct msm_gpu *gpu,
389 struct msm_gem_submit *submit, char *comm, char *cmd)
395 * Hangcheck detection for locked gpu:
398 static void update_fences(struct msm_gpu *gpu, struct msm_ringbuffer *ring,
401 struct msm_gem_submit *submit;
403 list_for_each_entry(submit, &ring->submits, node) {
404 if (submit->seqno > fence)
407 msm_update_fence(submit->ring->fctx,
408 submit->fence->seqno);
412 static struct msm_gem_submit *
413 find_submit(struct msm_ringbuffer *ring, uint32_t fence)
415 struct msm_gem_submit *submit;
417 WARN_ON(!mutex_is_locked(&ring->gpu->dev->struct_mutex));
419 list_for_each_entry(submit, &ring->submits, node)
420 if (submit->seqno == fence)
426 static void retire_submits(struct msm_gpu *gpu);
428 static void recover_worker(struct work_struct *work)
430 struct msm_gpu *gpu = container_of(work, struct msm_gpu, recover_work);
431 struct drm_device *dev = gpu->dev;
432 struct msm_drm_private *priv = dev->dev_private;
433 struct msm_gem_submit *submit;
434 struct msm_ringbuffer *cur_ring = gpu->funcs->active_ring(gpu);
435 char *comm = NULL, *cmd = NULL;
438 mutex_lock(&dev->struct_mutex);
440 DRM_DEV_ERROR(dev->dev, "%s: hangcheck recover!\n", gpu->name);
442 submit = find_submit(cur_ring, cur_ring->memptrs->fence + 1);
444 struct task_struct *task;
446 /* Increment the fault count */
447 gpu->global_faults++;
449 task = get_pid_task(submit->pid, PIDTYPE_PID);
451 comm = kstrdup(task->comm, GFP_KERNEL);
454 * So slightly annoying, in other paths like
455 * mmap'ing gem buffers, mmap_sem is acquired
456 * before struct_mutex, which means we can't
457 * hold struct_mutex across the call to
458 * get_cmdline(). But submits are retired
459 * from the same in-order workqueue, so we can
460 * safely drop the lock here without worrying
461 * about the submit going away.
463 mutex_unlock(&dev->struct_mutex);
464 cmd = kstrdup_quotable_cmdline(task, GFP_KERNEL);
465 put_task_struct(task);
466 mutex_lock(&dev->struct_mutex);
470 DRM_DEV_ERROR(dev->dev, "%s: offending task: %s (%s)\n",
471 gpu->name, comm, cmd);
473 msm_rd_dump_submit(priv->hangrd, submit,
474 "offending task: %s (%s)", comm, cmd);
476 msm_rd_dump_submit(priv->hangrd, submit, NULL);
479 /* Record the crash state */
480 pm_runtime_get_sync(&gpu->pdev->dev);
481 msm_gpu_crashstate_capture(gpu, submit, comm, cmd);
482 pm_runtime_put_sync(&gpu->pdev->dev);
488 * Update all the rings with the latest and greatest fence.. this
489 * needs to happen after msm_rd_dump_submit() to ensure that the
490 * bo's referenced by the offending submit are still around.
492 for (i = 0; i < gpu->nr_rings; i++) {
493 struct msm_ringbuffer *ring = gpu->rb[i];
495 uint32_t fence = ring->memptrs->fence;
498 * For the current (faulting?) ring/submit advance the fence by
499 * one more to clear the faulting submit
501 if (ring == cur_ring)
504 update_fences(gpu, ring, fence);
507 if (msm_gpu_active(gpu)) {
508 /* retire completed submits, plus the one that hung: */
511 pm_runtime_get_sync(&gpu->pdev->dev);
512 gpu->funcs->recover(gpu);
513 pm_runtime_put_sync(&gpu->pdev->dev);
516 * Replay all remaining submits starting with highest priority
519 for (i = 0; i < gpu->nr_rings; i++) {
520 struct msm_ringbuffer *ring = gpu->rb[i];
522 list_for_each_entry(submit, &ring->submits, node)
523 gpu->funcs->submit(gpu, submit, NULL);
527 mutex_unlock(&dev->struct_mutex);
532 static void hangcheck_timer_reset(struct msm_gpu *gpu)
534 DBG("%s", gpu->name);
535 mod_timer(&gpu->hangcheck_timer,
536 round_jiffies_up(jiffies + DRM_MSM_HANGCHECK_JIFFIES));
539 static void hangcheck_handler(struct timer_list *t)
541 struct msm_gpu *gpu = from_timer(gpu, t, hangcheck_timer);
542 struct drm_device *dev = gpu->dev;
543 struct msm_drm_private *priv = dev->dev_private;
544 struct msm_ringbuffer *ring = gpu->funcs->active_ring(gpu);
545 uint32_t fence = ring->memptrs->fence;
547 if (fence != ring->hangcheck_fence) {
548 /* some progress has been made.. ya! */
549 ring->hangcheck_fence = fence;
550 } else if (fence < ring->seqno) {
551 /* no progress and not done.. hung! */
552 ring->hangcheck_fence = fence;
553 DRM_DEV_ERROR(dev->dev, "%s: hangcheck detected gpu lockup rb %d!\n",
554 gpu->name, ring->id);
555 DRM_DEV_ERROR(dev->dev, "%s: completed fence: %u\n",
557 DRM_DEV_ERROR(dev->dev, "%s: submitted fence: %u\n",
558 gpu->name, ring->seqno);
560 queue_work(priv->wq, &gpu->recover_work);
563 /* if still more pending work, reset the hangcheck timer: */
564 if (ring->seqno > ring->hangcheck_fence)
565 hangcheck_timer_reset(gpu);
567 /* workaround for missing irq: */
568 queue_work(priv->wq, &gpu->retire_work);
572 * Performance Counters:
575 /* called under perf_lock */
576 static int update_hw_cntrs(struct msm_gpu *gpu, uint32_t ncntrs, uint32_t *cntrs)
578 uint32_t current_cntrs[ARRAY_SIZE(gpu->last_cntrs)];
579 int i, n = min(ncntrs, gpu->num_perfcntrs);
581 /* read current values: */
582 for (i = 0; i < gpu->num_perfcntrs; i++)
583 current_cntrs[i] = gpu_read(gpu, gpu->perfcntrs[i].sample_reg);
586 for (i = 0; i < n; i++)
587 cntrs[i] = current_cntrs[i] - gpu->last_cntrs[i];
589 /* save current values: */
590 for (i = 0; i < gpu->num_perfcntrs; i++)
591 gpu->last_cntrs[i] = current_cntrs[i];
596 static void update_sw_cntrs(struct msm_gpu *gpu)
602 spin_lock_irqsave(&gpu->perf_lock, flags);
603 if (!gpu->perfcntr_active)
607 elapsed = ktime_to_us(ktime_sub(time, gpu->last_sample.time));
609 gpu->totaltime += elapsed;
610 if (gpu->last_sample.active)
611 gpu->activetime += elapsed;
613 gpu->last_sample.active = msm_gpu_active(gpu);
614 gpu->last_sample.time = time;
617 spin_unlock_irqrestore(&gpu->perf_lock, flags);
620 void msm_gpu_perfcntr_start(struct msm_gpu *gpu)
624 pm_runtime_get_sync(&gpu->pdev->dev);
626 spin_lock_irqsave(&gpu->perf_lock, flags);
627 /* we could dynamically enable/disable perfcntr registers too.. */
628 gpu->last_sample.active = msm_gpu_active(gpu);
629 gpu->last_sample.time = ktime_get();
630 gpu->activetime = gpu->totaltime = 0;
631 gpu->perfcntr_active = true;
632 update_hw_cntrs(gpu, 0, NULL);
633 spin_unlock_irqrestore(&gpu->perf_lock, flags);
636 void msm_gpu_perfcntr_stop(struct msm_gpu *gpu)
638 gpu->perfcntr_active = false;
639 pm_runtime_put_sync(&gpu->pdev->dev);
642 /* returns -errno or # of cntrs sampled */
643 int msm_gpu_perfcntr_sample(struct msm_gpu *gpu, uint32_t *activetime,
644 uint32_t *totaltime, uint32_t ncntrs, uint32_t *cntrs)
649 spin_lock_irqsave(&gpu->perf_lock, flags);
651 if (!gpu->perfcntr_active) {
656 *activetime = gpu->activetime;
657 *totaltime = gpu->totaltime;
659 gpu->activetime = gpu->totaltime = 0;
661 ret = update_hw_cntrs(gpu, ncntrs, cntrs);
664 spin_unlock_irqrestore(&gpu->perf_lock, flags);
670 * Cmdstream submission/retirement:
673 static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring,
674 struct msm_gem_submit *submit)
676 int index = submit->seqno % MSM_GPU_SUBMIT_STATS_COUNT;
677 volatile struct msm_gpu_submit_stats *stats;
678 u64 elapsed, clock = 0;
681 stats = &ring->memptrs->stats[index];
682 /* Convert 19.2Mhz alwayson ticks to nanoseconds for elapsed time */
683 elapsed = (stats->alwayson_end - stats->alwayson_start) * 10000;
684 do_div(elapsed, 192);
686 /* Calculate the clock frequency from the number of CP cycles */
688 clock = (stats->cpcycles_end - stats->cpcycles_start) * 1000;
689 do_div(clock, elapsed);
692 trace_msm_gpu_submit_retired(submit, elapsed, clock,
693 stats->alwayson_start, stats->alwayson_end);
695 for (i = 0; i < submit->nr_bos; i++) {
696 struct msm_gem_object *msm_obj = submit->bos[i].obj;
697 /* move to inactive: */
698 msm_gem_move_to_inactive(&msm_obj->base);
699 msm_gem_unpin_iova(&msm_obj->base, gpu->aspace);
700 drm_gem_object_put(&msm_obj->base);
703 pm_runtime_mark_last_busy(&gpu->pdev->dev);
704 pm_runtime_put_autosuspend(&gpu->pdev->dev);
705 msm_gem_submit_free(submit);
708 static void retire_submits(struct msm_gpu *gpu)
710 struct drm_device *dev = gpu->dev;
711 struct msm_gem_submit *submit, *tmp;
714 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
716 /* Retire the commits starting with highest priority */
717 for (i = 0; i < gpu->nr_rings; i++) {
718 struct msm_ringbuffer *ring = gpu->rb[i];
720 list_for_each_entry_safe(submit, tmp, &ring->submits, node) {
721 if (dma_fence_is_signaled(submit->fence))
722 retire_submit(gpu, ring, submit);
727 static void retire_worker(struct work_struct *work)
729 struct msm_gpu *gpu = container_of(work, struct msm_gpu, retire_work);
730 struct drm_device *dev = gpu->dev;
733 for (i = 0; i < gpu->nr_rings; i++)
734 update_fences(gpu, gpu->rb[i], gpu->rb[i]->memptrs->fence);
736 mutex_lock(&dev->struct_mutex);
738 mutex_unlock(&dev->struct_mutex);
741 /* call from irq handler to schedule work to retire bo's */
742 void msm_gpu_retire(struct msm_gpu *gpu)
744 struct msm_drm_private *priv = gpu->dev->dev_private;
745 queue_work(priv->wq, &gpu->retire_work);
746 update_sw_cntrs(gpu);
749 /* add bo's to gpu's ring, and kick gpu: */
750 void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
751 struct msm_file_private *ctx)
753 struct drm_device *dev = gpu->dev;
754 struct msm_drm_private *priv = dev->dev_private;
755 struct msm_ringbuffer *ring = submit->ring;
758 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
760 pm_runtime_get_sync(&gpu->pdev->dev);
762 msm_gpu_hw_init(gpu);
764 submit->seqno = ++ring->seqno;
766 list_add_tail(&submit->node, &ring->submits);
768 msm_rd_dump_submit(priv->rd, submit, NULL);
770 update_sw_cntrs(gpu);
772 for (i = 0; i < submit->nr_bos; i++) {
773 struct msm_gem_object *msm_obj = submit->bos[i].obj;
776 /* can't happen yet.. but when we add 2d support we'll have
777 * to deal w/ cross-ring synchronization:
779 WARN_ON(is_active(msm_obj) && (msm_obj->gpu != gpu));
781 /* submit takes a reference to the bo and iova until retired: */
782 drm_gem_object_get(&msm_obj->base);
783 msm_gem_get_and_pin_iova(&msm_obj->base,
784 submit->gpu->aspace, &iova);
786 if (submit->bos[i].flags & MSM_SUBMIT_BO_WRITE)
787 msm_gem_move_to_active(&msm_obj->base, gpu, true, submit->fence);
788 else if (submit->bos[i].flags & MSM_SUBMIT_BO_READ)
789 msm_gem_move_to_active(&msm_obj->base, gpu, false, submit->fence);
792 gpu->funcs->submit(gpu, submit, ctx);
795 hangcheck_timer_reset(gpu);
802 static irqreturn_t irq_handler(int irq, void *data)
804 struct msm_gpu *gpu = data;
805 return gpu->funcs->irq(gpu);
808 static int get_clocks(struct platform_device *pdev, struct msm_gpu *gpu)
810 int ret = msm_clk_bulk_get(&pdev->dev, &gpu->grp_clks);
817 gpu->nr_clocks = ret;
819 gpu->core_clk = msm_clk_bulk_get_clock(gpu->grp_clks,
820 gpu->nr_clocks, "core");
822 gpu->rbbmtimer_clk = msm_clk_bulk_get_clock(gpu->grp_clks,
823 gpu->nr_clocks, "rbbmtimer");
828 static struct msm_gem_address_space *
829 msm_gpu_create_address_space(struct msm_gpu *gpu, struct platform_device *pdev,
830 uint64_t va_start, uint64_t va_end)
832 struct msm_gem_address_space *aspace;
836 * Setup IOMMU.. eventually we will (I think) do this once per context
837 * and have separate page tables per context. For now, to keep things
838 * simple and to get something working, just use a single address space:
840 if (!adreno_is_a2xx(to_adreno_gpu(gpu))) {
841 struct iommu_domain *iommu = iommu_domain_alloc(&platform_bus_type);
845 iommu->geometry.aperture_start = va_start;
846 iommu->geometry.aperture_end = va_end;
848 DRM_DEV_INFO(gpu->dev->dev, "%s: using IOMMU\n", gpu->name);
850 aspace = msm_gem_address_space_create(&pdev->dev, iommu, "gpu");
852 iommu_domain_free(iommu);
854 aspace = msm_gem_address_space_create_a2xx(&pdev->dev, gpu, "gpu",
858 if (IS_ERR(aspace)) {
859 DRM_DEV_ERROR(gpu->dev->dev, "failed to init mmu: %ld\n",
861 return ERR_CAST(aspace);
864 ret = aspace->mmu->funcs->attach(aspace->mmu, NULL, 0);
866 msm_gem_address_space_put(aspace);
873 int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
874 struct msm_gpu *gpu, const struct msm_gpu_funcs *funcs,
875 const char *name, struct msm_gpu_config *config)
877 int i, ret, nr_rings = config->nr_rings;
879 uint64_t memptrs_iova;
881 if (WARN_ON(gpu->num_perfcntrs > ARRAY_SIZE(gpu->last_cntrs)))
882 gpu->num_perfcntrs = ARRAY_SIZE(gpu->last_cntrs);
888 INIT_LIST_HEAD(&gpu->active_list);
889 INIT_WORK(&gpu->retire_work, retire_worker);
890 INIT_WORK(&gpu->recover_work, recover_worker);
893 timer_setup(&gpu->hangcheck_timer, hangcheck_handler, 0);
895 spin_lock_init(&gpu->perf_lock);
899 gpu->mmio = msm_ioremap(pdev, config->ioname, name);
900 if (IS_ERR(gpu->mmio)) {
901 ret = PTR_ERR(gpu->mmio);
906 gpu->irq = platform_get_irq(pdev, 0);
909 DRM_DEV_ERROR(drm->dev, "failed to get irq: %d\n", ret);
913 ret = devm_request_irq(&pdev->dev, gpu->irq, irq_handler,
914 IRQF_TRIGGER_HIGH, gpu->name, gpu);
916 DRM_DEV_ERROR(drm->dev, "failed to request IRQ%u: %d\n", gpu->irq, ret);
920 ret = get_clocks(pdev, gpu);
924 gpu->ebi1_clk = msm_clk_get(pdev, "bus");
925 DBG("ebi1_clk: %p", gpu->ebi1_clk);
926 if (IS_ERR(gpu->ebi1_clk))
927 gpu->ebi1_clk = NULL;
929 /* Acquire regulators: */
930 gpu->gpu_reg = devm_regulator_get(&pdev->dev, "vdd");
931 DBG("gpu_reg: %p", gpu->gpu_reg);
932 if (IS_ERR(gpu->gpu_reg))
935 gpu->gpu_cx = devm_regulator_get(&pdev->dev, "vddcx");
936 DBG("gpu_cx: %p", gpu->gpu_cx);
937 if (IS_ERR(gpu->gpu_cx))
941 platform_set_drvdata(pdev, gpu);
943 msm_devfreq_init(gpu);
945 gpu->aspace = msm_gpu_create_address_space(gpu, pdev,
946 config->va_start, config->va_end);
948 if (gpu->aspace == NULL)
949 DRM_DEV_INFO(drm->dev, "%s: no IOMMU, fallback to VRAM carveout!\n", name);
950 else if (IS_ERR(gpu->aspace)) {
951 ret = PTR_ERR(gpu->aspace);
955 memptrs = msm_gem_kernel_new(drm,
956 sizeof(struct msm_rbmemptrs) * nr_rings,
957 MSM_BO_UNCACHED, gpu->aspace, &gpu->memptrs_bo,
960 if (IS_ERR(memptrs)) {
961 ret = PTR_ERR(memptrs);
962 DRM_DEV_ERROR(drm->dev, "could not allocate memptrs: %d\n", ret);
966 msm_gem_object_set_name(gpu->memptrs_bo, "memptrs");
968 if (nr_rings > ARRAY_SIZE(gpu->rb)) {
969 DRM_DEV_INFO_ONCE(drm->dev, "Only creating %zu ringbuffers\n",
970 ARRAY_SIZE(gpu->rb));
971 nr_rings = ARRAY_SIZE(gpu->rb);
974 /* Create ringbuffer(s): */
975 for (i = 0; i < nr_rings; i++) {
976 gpu->rb[i] = msm_ringbuffer_new(gpu, i, memptrs, memptrs_iova);
978 if (IS_ERR(gpu->rb[i])) {
979 ret = PTR_ERR(gpu->rb[i]);
980 DRM_DEV_ERROR(drm->dev,
981 "could not create ringbuffer %d: %d\n", i, ret);
985 memptrs += sizeof(struct msm_rbmemptrs);
986 memptrs_iova += sizeof(struct msm_rbmemptrs);
989 gpu->nr_rings = nr_rings;
994 for (i = 0; i < ARRAY_SIZE(gpu->rb); i++) {
995 msm_ringbuffer_destroy(gpu->rb[i]);
999 msm_gem_kernel_put(gpu->memptrs_bo, gpu->aspace, false);
1001 platform_set_drvdata(pdev, NULL);
1005 void msm_gpu_cleanup(struct msm_gpu *gpu)
1009 DBG("%s", gpu->name);
1011 WARN_ON(!list_empty(&gpu->active_list));
1013 for (i = 0; i < ARRAY_SIZE(gpu->rb); i++) {
1014 msm_ringbuffer_destroy(gpu->rb[i]);
1018 msm_gem_kernel_put(gpu->memptrs_bo, gpu->aspace, false);
1020 if (!IS_ERR_OR_NULL(gpu->aspace)) {
1021 gpu->aspace->mmu->funcs->detach(gpu->aspace->mmu,
1023 msm_gem_address_space_put(gpu->aspace);