Merge tag 'drm-next-2021-04-28' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "The usual lots of work all over the place.

  i915 has gotten some Alderlake work and prelim DG1 code, along with a
  major locking rework over the GEM code, and brings back the property
  of timing out long running jobs using a watchdog. amdgpu has some
  Alderbran support (new GPU), freesync HDMI support along with a lot
  other fixes.

  Outside of the drm, there is a new printf specifier added which should
  have all the correct acks/sobs:

   - printk fourcc modifier support added %p4cc

  Summary:

  core:
   - drm_crtc_commit_wait
   - atomic plane state helpers reworked for full state
   - dma-buf heaps API rework
   - edid: rework and improvements for displayid

  dp-mst:
   - better topology logging

  bridge:
   - Chipone ICN6211
   - Lontium LT8912B
   - anx7625 regulator support

  panel:
   - fix lt9611 4k panels handling

  simple-kms:
   - add plane state helpers

  ttm:
   - debugfs support
   - removal of unused sysfs
   - ignore signaled moved fences
   - ioremap buffer according to mem caching

  i915:
   - Alderlake S enablement
   - Conversion to dma_resv_locking
   - Bring back watchdog timeout support
   - legacy ioctl cleanups
   - add GEM TDDO and RFC process
   - DG1 LMEM preparation work
   - intel_display.c refactoring
   - Gen9/TGL PCH combination support
   - eDP MSO Support
   - multiple PSR instance support
   - Link training debug updates
   - Disable PSR2 support on JSL/EHL
   - DDR5/LPDDR5 support for bw calcs
   - LSPCON limited to gen9/10 platforms
   - HSW/BDW async flip/VTd corruption workaround
   - SAGV watermark fixes
   - SNB hard hang on ring resume fix
   - Limit imported dma-buf size
   - move to use new tasklet API
   - refactor KBL/TGL/ADL-S display/gt steppings
   - refactoring legacy DP/HDMI, FB plane code out

  amdgpu:
   - uapi: add ioctl to query video capabilities
   - Iniital AMD Freesync HDMI support
   - Initial Adebaran support
   - 10bpc dithering improvements
   - DCN secure display support
   - Drop legacy IO BAR requirements
   - PCIE/S0ix/RAS/Prime/Reset fixes
   - Display ASSR support
   - SMU gfx busy queues for RV/PCO
   - Initial LTTPR display work

  amdkfd:
   - MMU notifier fixes
   - APU fixes

  radeon:
   - debugfs cleanps
   - fw error handling ifix
   - Flexible array cleanups

  msm:
   - big DSI phy/pll cleanup
   - sc7280 initial support
   - commong bandwidth scaling path
   - shrinker locking contention fixes
   - unpin/swap support for GEM objcets

  ast:
   - cursor plane handling reworked

  tegra:
   - don't register DP AUX channels before connectors

  zynqmp:
   - fix OOB struct padding memset

  gma500:
   - drop ttm and medfield support

  exynos:
   - request_irq cleanup function

  mediatek:
   - fine tune line time for EOTp
   - MT8192 dpi support
   - atomic crtc config updates
   - don't support HDMI connector creation

  mxsdb:
   - imx8mm support

  panfrost:
   - MMU IRQ handling rework

  qxl:
   - locking fixes
   - resource deallocation changes

  sun4i:
   - add alpha properties to UI/VI layers

  vc4:
   - RPi4 CEC support

  vmwgfx:
   - doc cleanups

  arc:
   - moved to drm/tiny"

* tag 'drm-next-2021-04-28' of git://anongit.freedesktop.org/drm/drm: (1390 commits)
  drm/ttm: Don't count pages in SG BOs against pages_limit
  drm/ttm: fix return value check
  drm/bridge: lt8912b: fix incorrect handling of of_* return values
  drm: bridge: fix LONTIUM use of mipi_dsi_() functions
  drm: bridge: fix ANX7625 use of mipi_dsi_() functions
  drm/amdgpu: page retire over debugfs mechanism
  drm/radeon: Fix a missing check bug in radeon_dp_mst_detect()
  drm/amd/display: Fix the Wunused-function warning
  drm/radeon/r600: Fix variables that are not used after assignment
  drm/amdgpu/smu7: fix CAC setting on TOPAZ
  drm/amd/display: Update DCN302 SR Exit Latency
  drm/amdgpu: enable ras eeprom on aldebaran
  drm/amdgpu: RAS harvest on driver load
  drm/amdgpu: add ras aldebaran ras eeprom driver
  drm/amd/pm: increase time out value when sending msg to SMU
  drm/amdgpu: add DMUB outbox event IRQ source define/complete/debug flag
  drm/amd/pm: add the callback to get vbios bootup values for vangogh
  drm/radeon: Fix size overflow
  drm/amdgpu: Fix size overflow
  drm/amdgpu: move mmhub ras_func init to ip specific file
  ...

4 files changed, 42 insertions, 20 deletions

diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index c878391f3e8c..47d27e54a34f 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -124,8 +124,16 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
 	panfrost_devfreq_profile.initial_freq = cur_freq;
 	dev_pm_opp_put(opp);
 
+	/*
+	 * Setup default thresholds for the simple_ondemand governor.
+	 * The values are chosen based on experiments.
+	 */
+	pfdevfreq->gov_data.upthreshold = 45;
+	pfdevfreq->gov_data.downdifferential = 5;
+
 	devfreq = devm_devfreq_add_device(dev, &panfrost_devfreq_profile,
-					  DEVFREQ_GOV_SIMPLE_ONDEMAND, NULL);
+					  DEVFREQ_GOV_SIMPLE_ONDEMAND,
+					  &pfdevfreq->gov_data);
 	if (IS_ERR(devfreq)) {
 		DRM_DEV_ERROR(dev, "Couldn't initialize GPU devfreq\n");
 		return PTR_ERR(devfreq);
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.h b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
index 210269944687..1514c1f9d91c 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.h
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
@@ -4,6 +4,7 @@
 #ifndef __PANFROST_DEVFREQ_H__
 #define __PANFROST_DEVFREQ_H__
 
+#include <linux/devfreq.h>
 #include <linux/spinlock.h>
 #include <linux/ktime.h>
 
@@ -15,6 +16,7 @@ struct panfrost_device;
 struct panfrost_devfreq {
 	struct devfreq *devfreq;
 	struct thermal_cooling_device *cooling;
+	struct devfreq_simple_ondemand_data gov_data;
 	bool opp_of_table_added;
 
 	ktime_t busy_time;
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index 04e6f6f9b742..6003cfeb1322 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -432,7 +432,8 @@ static void panfrost_scheduler_start(struct panfrost_queue_state *queue)
 	mutex_unlock(&queue->lock);
 }
 
-static void panfrost_job_timedout(struct drm_sched_job *sched_job)
+static enum drm_gpu_sched_stat panfrost_job_timedout(struct drm_sched_job
+						     *sched_job)
 {
 	struct panfrost_job *job = to_panfrost_job(sched_job);
 	struct panfrost_device *pfdev = job->pfdev;
@@ -443,7 +444,7 @@ static void panfrost_job_timedout(struct drm_sched_job *sched_job)
 	 * spurious. Bail out.
 	 */
 	if (dma_fence_is_signaled(job->done_fence))
-		return;
+		return DRM_GPU_SCHED_STAT_NOMINAL;
 
 	dev_err(pfdev->dev, "gpu sched timeout, js=%d, config=0x%x, status=0x%x, head=0x%x, tail=0x%x, sched_job=%p",
 		js,
@@ -455,11 +456,13 @@ static void panfrost_job_timedout(struct drm_sched_job *sched_job)
 
 	/* Scheduler is already stopped, nothing to do. */
 	if (!panfrost_scheduler_stop(&pfdev->js->queue[js], sched_job))
-		return;
+		return DRM_GPU_SCHED_STAT_NOMINAL;
 
 	/* Schedule a reset if there's no reset in progress. */
 	if (!atomic_xchg(&pfdev->reset.pending, 1))
 		schedule_work(&pfdev->reset.work);
+
+	return DRM_GPU_SCHED_STAT_NOMINAL;
 }
 
 static const struct drm_sched_backend_ops panfrost_sched_ops = {
@@ -624,7 +627,7 @@ int panfrost_job_init(struct panfrost_device *pfdev)
 		ret = drm_sched_init(&js->queue[j].sched,
 				     &panfrost_sched_ops,
 				     1, 0, msecs_to_jiffies(JOB_TIMEOUT_MS),
-				     "pan_js");
+				     NULL, "pan_js");
 		if (ret) {
 			dev_err(pfdev->dev, "Failed to create scheduler: %d.", ret);
 			goto err_sched;
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c
index 7c1b3481b785..0581186ebfb3 100644
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
@@ -488,8 +488,14 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as,
 		}
 		bo->base.pages = pages;
 		bo->base.pages_use_count = 1;
-	} else
+	} else {
 		pages = bo->base.pages;
+		if (pages[page_offset]) {
+			/* Pages are already mapped, bail out. */
+			mutex_unlock(&bo->base.pages_lock);
+			goto out;
+		}
+	}
 
 	mapping = bo->base.base.filp->f_mapping;
 	mapping_set_unevictable(mapping);
@@ -522,6 +528,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as,
 
 	dev_dbg(pfdev->dev, "mapped page fault @ AS%d %llx", as, addr);
 
+out:
 	panfrost_gem_mapping_put(bomapping);
 
 	return 0;
@@ -571,32 +578,32 @@ static irqreturn_t panfrost_mmu_irq_handler_thread(int irq, void *data)
 {
 	struct panfrost_device *pfdev = data;
 	u32 status = mmu_read(pfdev, MMU_INT_RAWSTAT);
-	int i, ret;
+	int ret;
 
-	for (i = 0; status; i++) {
-		u32 mask = BIT(i) | BIT(i + 16);
+	while (status) {
+		u32 as = ffs(status | (status >> 16)) - 1;
+		u32 mask = BIT(as) | BIT(as + 16);
 		u64 addr;
 		u32 fault_status;
 		u32 exception_type;
 		u32 access_type;
 		u32 source_id;
 
-		if (!(status & mask))
-			continue;
-
-		fault_status = mmu_read(pfdev, AS_FAULTSTATUS(i));
-		addr = mmu_read(pfdev, AS_FAULTADDRESS_LO(i));
-		addr |= (u64)mmu_read(pfdev, AS_FAULTADDRESS_HI(i)) << 32;
+		fault_status = mmu_read(pfdev, AS_FAULTSTATUS(as));
+		addr = mmu_read(pfdev, AS_FAULTADDRESS_LO(as));
+		addr |= (u64)mmu_read(pfdev, AS_FAULTADDRESS_HI(as)) << 32;
 
 		/* decode the fault status */
 		exception_type = fault_status & 0xFF;
 		access_type = (fault_status >> 8) & 0x3;
 		source_id = (fault_status >> 16);
 
+		mmu_write(pfdev, MMU_INT_CLEAR, mask);
+
 		/* Page fault only */
 		ret = -1;
-		if ((status & mask) == BIT(i) && (exception_type & 0xF8) == 0xC0)
-			ret = panfrost_mmu_map_fault_addr(pfdev, i, addr);
+		if ((status & mask) == BIT(as) && (exception_type & 0xF8) == 0xC0)
+			ret = panfrost_mmu_map_fault_addr(pfdev, as, addr);
 
 		if (ret)
 			/* terminal fault, print info about the fault */
@@ -608,7 +615,7 @@ static irqreturn_t panfrost_mmu_irq_handler_thread(int irq, void *data)
 				"exception type 0x%X: %s\n"
 				"access type 0x%X: %s\n"
 				"source id 0x%X\n",
-				i, addr,
+				as, addr,
 				"TODO",
 				fault_status,
 				(fault_status & (1 << 10) ? "DECODER FAULT" : "SLAVE FAULT"),
@@ -616,9 +623,11 @@ static irqreturn_t panfrost_mmu_irq_handler_thread(int irq, void *data)
 				access_type, access_type_name(pfdev, fault_status),
 				source_id);
 
-		mmu_write(pfdev, MMU_INT_CLEAR, mask);
-
 		status &= ~mask;
+
+		/* If we received new MMU interrupts, process them before returning. */
+		if (!status)
+			status = mmu_read(pfdev, MMU_INT_RAWSTAT);
 	}
 
 	mmu_write(pfdev, MMU_INT_MASK, ~0);