update drm to linux 5.7

adds kernel support for
amdgpu:		vega20, raven2, renoir, navi10, navi14
inteldrm:	icelake, tigerlake

Thanks to the OpenBSD Foundation for sponsoring this work, kettenis@ for
helping, patrick@ for helping adapt rockchip drm and many developers for
testing.

1 files changed, 67 insertions, 186 deletions

diff --git a/sys/dev/pci/drm/amd/amdgpu/amdgpu_ring.c b/sys/dev/pci/drm/amd/amdgpu/amdgpu_ring.c
index ee18ba3ce97..bea77a5dc95 100644
--- a/sys/dev/pci/drm/amd/amdgpu/amdgpu_ring.c
+++ b/sys/dev/pci/drm/amd/amdgpu/amdgpu_ring.c
@@ -28,8 +28,9 @@
  */
 #include <linux/seq_file.h>
 #include <linux/slab.h>
+#include <linux/uaccess.h>
 #include <linux/debugfs.h>
-#include <drm/drmP.h>
+
 #include <drm/amdgpu_drm.h>
 #include "amdgpu.h"
 #include "atom.h"
@@ -47,9 +48,6 @@
  * wptr.  The GPU then starts fetching commands and executes
  * them until the pointers are equal again.
  */
-static int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
-				    struct amdgpu_ring *ring);
-static void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring);
 
 /**
  * amdgpu_ring_alloc - allocate space on the ring buffer
@@ -135,9 +133,6 @@ void amdgpu_ring_commit(struct amdgpu_ring *ring)
 
 	if (ring->funcs->end_use)
 		ring->funcs->end_use(ring);
-
-	if (ring->funcs->type != AMDGPU_RING_TYPE_KIQ)
-		amdgpu_ring_lru_touch(ring->adev, ring);
 }
 
 /**
@@ -156,76 +151,6 @@ void amdgpu_ring_undo(struct amdgpu_ring *ring)
 }
 
 /**
- * amdgpu_ring_priority_put - restore a ring's priority
- *
- * @ring: amdgpu_ring structure holding the information
- * @priority: target priority
- *
- * Release a request for executing at @priority
- */
-void amdgpu_ring_priority_put(struct amdgpu_ring *ring,
-			      enum drm_sched_priority priority)
-{
-	int i;
-
-	if (!ring->funcs->set_priority)
-		return;
-
-	if (atomic_dec_return(&ring->num_jobs[priority]) > 0)
-		return;
-
-	/* no need to restore if the job is already at the lowest priority */
-	if (priority == DRM_SCHED_PRIORITY_NORMAL)
-		return;
-
-	mutex_lock(&ring->priority_mutex);
-	/* something higher prio is executing, no need to decay */
-	if (ring->priority > priority)
-		goto out_unlock;
-
-	/* decay priority to the next level with a job available */
-	for (i = priority; i >= DRM_SCHED_PRIORITY_MIN; i--) {
-		if (i == DRM_SCHED_PRIORITY_NORMAL
-				|| atomic_read(&ring->num_jobs[i])) {
-			ring->priority = i;
-			ring->funcs->set_priority(ring, i);
-			break;
-		}
-	}
-
-out_unlock:
-	mutex_unlock(&ring->priority_mutex);
-}
-
-/**
- * amdgpu_ring_priority_get - change the ring's priority
- *
- * @ring: amdgpu_ring structure holding the information
- * @priority: target priority
- *
- * Request a ring's priority to be raised to @priority (refcounted).
- */
-void amdgpu_ring_priority_get(struct amdgpu_ring *ring,
-			      enum drm_sched_priority priority)
-{
-	if (!ring->funcs->set_priority)
-		return;
-
-	if (atomic_inc_return(&ring->num_jobs[priority]) <= 0)
-		return;
-
-	mutex_lock(&ring->priority_mutex);
-	if (priority <= ring->priority)
-		goto out_unlock;
-
-	ring->priority = priority;
-	ring->funcs->set_priority(ring, priority);
-
-out_unlock:
-	mutex_unlock(&ring->priority_mutex);
-}
-
-/**
  * amdgpu_ring_init - init driver ring struct.
  *
  * @adev: amdgpu_device pointer
@@ -251,6 +176,8 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
 	 */
 	if (ring->funcs->type == AMDGPU_RING_TYPE_KIQ)
 		sched_hw_submission = max(sched_hw_submission, 256);
+	else if (ring == &adev->sdma.instance[0].page)
+		sched_hw_submission = 256;
 
 	if (ring->adev == NULL) {
 		if (adev->num_rings >= AMDGPU_MAX_RINGS)
@@ -282,6 +209,16 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
 		return r;
 	}
 
+	r = amdgpu_device_wb_get(adev, &ring->trail_fence_offs);
+	if (r) {
+		dev_err(adev->dev,
+			"(%d) ring trail_fence_offs wb alloc failed\n", r);
+		return r;
+	}
+	ring->trail_fence_gpu_addr =
+		adev->wb.gpu_addr + (ring->trail_fence_offs * 4);
+	ring->trail_fence_cpu_addr = &adev->wb.wb[ring->trail_fence_offs];
+
 	r = amdgpu_device_wb_get(adev, &ring->cond_exe_offs);
 	if (r) {
 		dev_err(adev->dev, "(%d) ring cond_exec_polling wb alloc failed\n", r);
@@ -320,16 +257,10 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
 	ring->max_dw = max_dw;
 	ring->priority = DRM_SCHED_PRIORITY_NORMAL;
 	rw_init(&ring->priority_mutex, "ringpri");
-	INIT_LIST_HEAD(&ring->lru_list);
-	amdgpu_ring_lru_touch(adev, ring);
 
 	for (i = 0; i < DRM_SCHED_PRIORITY_MAX; ++i)
 		atomic_set(&ring->num_jobs[i], 0);
 
-	if (amdgpu_debugfs_ring_init(adev, ring)) {
-		DRM_ERROR("Failed to register debugfs file for rings !\n");
-	}
-
 	return 0;
 }
 
@@ -343,12 +274,13 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
  */
 void amdgpu_ring_fini(struct amdgpu_ring *ring)
 {
-	ring->ready = false;
 
 	/* Not to finish a ring which is not initialized */
 	if (!(ring->adev) || !(ring->adev->rings[ring->idx]))
 		return;
 
+	ring->sched.ready = false;
+
 	amdgpu_device_wb_free(ring->adev, ring->rptr_offs);
 	amdgpu_device_wb_free(ring->adev, ring->wptr_offs);
 
@@ -359,8 +291,6 @@ void amdgpu_ring_fini(struct amdgpu_ring *ring)
 			      &ring->gpu_addr,
 			      (void **)&ring->ring);
 
-	amdgpu_debugfs_ring_fini(ring);
-
 	dma_fence_put(ring->vmid_wait);
 	ring->vmid_wait = NULL;
 	ring->me = 0;
@@ -368,99 +298,6 @@ void amdgpu_ring_fini(struct amdgpu_ring *ring)
 	ring->adev->rings[ring->idx] = NULL;
 }
 
-static void amdgpu_ring_lru_touch_locked(struct amdgpu_device *adev,
-					 struct amdgpu_ring *ring)
-{
-	/* list_move_tail handles the case where ring isn't part of the list */
-	list_move_tail(&ring->lru_list, &adev->ring_lru_list);
-}
-
-static bool amdgpu_ring_is_blacklisted(struct amdgpu_ring *ring,
-				       int *blacklist, int num_blacklist)
-{
-	int i;
-
-	for (i = 0; i < num_blacklist; i++) {
-		if (ring->idx == blacklist[i])
-			return true;
-	}
-
-	return false;
-}
-
-/**
- * amdgpu_ring_lru_get - get the least recently used ring for a HW IP block
- *
- * @adev: amdgpu_device pointer
- * @type: amdgpu_ring_type enum
- * @blacklist: blacklisted ring ids array
- * @num_blacklist: number of entries in @blacklist
- * @lru_pipe_order: find a ring from the least recently used pipe
- * @ring: output ring
- *
- * Retrieve the amdgpu_ring structure for the least recently used ring of
- * a specific IP block (all asics).
- * Returns 0 on success, error on failure.
- */
-int amdgpu_ring_lru_get(struct amdgpu_device *adev, int type,
-			int *blacklist,	int num_blacklist,
-			bool lru_pipe_order, struct amdgpu_ring **ring)
-{
-	struct amdgpu_ring *entry;
-
-	/* List is sorted in LRU order, find first entry corresponding
-	 * to the desired HW IP */
-	*ring = NULL;
-	spin_lock(&adev->ring_lru_list_lock);
-	list_for_each_entry(entry, &adev->ring_lru_list, lru_list) {
-		if (entry->funcs->type != type)
-			continue;
-
-		if (amdgpu_ring_is_blacklisted(entry, blacklist, num_blacklist))
-			continue;
-
-		if (!*ring) {
-			*ring = entry;
-
-			/* We are done for ring LRU */
-			if (!lru_pipe_order)
-				break;
-		}
-
-		/* Move all rings on the same pipe to the end of the list */
-		if (entry->pipe == (*ring)->pipe)
-			amdgpu_ring_lru_touch_locked(adev, entry);
-	}
-
-	/* Move the ring we found to the end of the list */
-	if (*ring)
-		amdgpu_ring_lru_touch_locked(adev, *ring);
-
-	spin_unlock(&adev->ring_lru_list_lock);
-
-	if (!*ring) {
-		DRM_ERROR("Ring LRU contains no entries for ring type:%d\n", type);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/**
- * amdgpu_ring_lru_touch - mark a ring as recently being used
- *
- * @adev: amdgpu_device pointer
- * @ring: ring to touch
- *
- * Move @ring to the tail of the lru list
- */
-void amdgpu_ring_lru_touch(struct amdgpu_device *adev, struct amdgpu_ring *ring)
-{
-	spin_lock(&adev->ring_lru_list_lock);
-	amdgpu_ring_lru_touch_locked(adev, ring);
-	spin_unlock(&adev->ring_lru_list_lock);
-}
-
 /**
  * amdgpu_ring_emit_reg_write_reg_wait_helper - ring helper
  *
@@ -481,6 +318,31 @@ void amdgpu_ring_emit_reg_write_reg_wait_helper(struct amdgpu_ring *ring,
 	amdgpu_ring_emit_reg_wait(ring, reg1, mask, mask);
 }
 
+/**
+ * amdgpu_ring_soft_recovery - try to soft recover a ring lockup
+ *
+ * @ring: ring to try the recovery on
+ * @vmid: VMID we try to get going again
+ * @fence: timedout fence
+ *
+ * Tries to get a ring proceeding again when it is stuck.
+ */
+bool amdgpu_ring_soft_recovery(struct amdgpu_ring *ring, unsigned int vmid,
+			       struct dma_fence *fence)
+{
+	ktime_t deadline = ktime_add_us(ktime_get(), 10000);
+
+	if (amdgpu_sriov_vf(ring->adev) || !ring->funcs->soft_recovery || !fence)
+		return false;
+
+	atomic_inc(&ring->adev->gpu_reset_counter);
+	while (!dma_fence_is_signaled(fence) &&
+	       ktime_to_ns(ktime_sub(deadline, ktime_get())) > 0)
+		ring->funcs->soft_recovery(ring, vmid);
+
+	return dma_fence_is_signaled(fence);
+}
+
 /*
  * Debugfs info
  */
@@ -545,15 +407,15 @@ static const struct file_operations amdgpu_debugfs_ring_fops = {
 
 #endif
 
-static int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
-				    struct amdgpu_ring *ring)
+int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
+			     struct amdgpu_ring *ring)
 {
 #if defined(CONFIG_DEBUG_FS)
 	struct drm_minor *minor = adev->ddev->primary;
 	struct dentry *ent, *root = minor->debugfs_root;
 	char name[32];
 
-	snprintf(name, sizeof(name), "amdgpu_ring_%s", ring->name);
+	sprintf(name, "amdgpu_ring_%s", ring->name);
 
 	ent = debugfs_create_file(name,
 				  S_IFREG | S_IRUGO, root,
@@ -567,9 +429,28 @@ static int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
 	return 0;
 }
 
-static void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring)
+/**
+ * amdgpu_ring_test_helper - tests ring and set sched readiness status
+ *
+ * @ring: ring to try the recovery on
+ *
+ * Tests ring and set sched readiness status
+ *
+ * Returns 0 on success, error on failure.
+ */
+int amdgpu_ring_test_helper(struct amdgpu_ring *ring)
 {
-#if defined(CONFIG_DEBUG_FS)
-	debugfs_remove(ring->ent);
-#endif
+	struct amdgpu_device *adev = ring->adev;
+	int r;
+
+	r = amdgpu_ring_test_ring(ring);
+	if (r)
+		DRM_DEV_ERROR(adev->dev, "ring %s test failed (%d)\n",
+			      ring->name, r);
+	else
+		DRM_DEV_DEBUG(adev->dev, "ring test on %s succeeded\n",
+			      ring->name);
+
+	ring->sched.ready = !r;
+	return r;
 }