Merge tag 'amd-drm-next-6.15-2025-02-21' of https://gitlab.freedesktop.org/agd5f/linux into drm-next

amd-drm-next-6.15-2025-02-21:

amdgpu:
- Add OEM i2c support for RGB lights, etc.
- Add support for GC 11.5.3
- Add support for GC 11.5.2
- Add support for SDMA 6.1.3
- Add support for NBIO 7.11.2
- Add support for NBIO 7.9.1
- Add support for MMHUB 3.3.2
- Add support for MMHUB 1.8.1
- Add support for SMU 14.0.5
- Add support for SMUIO 13.0.11
- Add support for PSP 14.0.5
- Add support for UMC 12.5.0
- Add support for DCN 3.6.0
- JPEG 4.0.3 updates
- Add dynamic workload profile switching for GC 10-12
- support larger vbios sizes
- GC 9.5.0 updates
- SMU 13.0.12 updates
- SMU 13.0.6 updates
- IP discovery updates
- GC 10 queue reset updates
- DCN 4.0.1 updates
- UHBR link rate fixes
- Aborted suspend fix
- Mark gttsize parameter as deprecated
- GC 10 cleaner shader updates
- PSR-SU fixes
- Clean up PM4 headers
- Cursor fixes
- Enable devcoredump for JPEG
- Misc cleanups
- Runpm cleanups
- MES updates
- GC 9 gfxoff fixes
- Vbios fetching cleanups
- Documentation updates
- Update secondary plane handling
- DML2 updates
- SDMA fixes for MI
- Cleaner shader fixes for GC 11/12
- ACA updates
- Initial JPEG queue reset support
- RAS updates
- Initial RAS CPER support
- DCN/DCE panic screen handling cleanup
- BT2020 fixes
- SR-IOV fixes

amdkfd:
- synchronize pasid values between KGD and KFD
- Misc cleanups
- Improve GTT/VRAM handling for APUs
- Topology updates
- Fix user queue validation on GC 7/8

UAPI:
- Enable "Broadcast RGB" drm property
- Add INFO IOCTL query for virtualization mode
  Proposed userspace:
  https://github.com/ROCm/amdsmi/commit/e663bed7d6b3df79f5959e73981749b1f22ec698

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250221213651.4176031-1-alexander.deucher@amd.com
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 67 insertions, 24 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index a6e28fe3f8d6..f53887e2f528 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -324,20 +324,27 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
 	/* always set cond_exec_polling to CONTINUE */
 	*ring->cond_exe_cpu_addr = 1;
 
-	r = amdgpu_fence_driver_start_ring(ring, irq_src, irq_type);
-	if (r) {
-		dev_err(adev->dev, "failed initializing fences (%d).\n", r);
-		return r;
-	}
+	if (ring->funcs->type != AMDGPU_RING_TYPE_CPER) {
+		r = amdgpu_fence_driver_start_ring(ring, irq_src, irq_type);
+		if (r) {
+			dev_err(adev->dev, "failed initializing fences (%d).\n", r);
+			return r;
+		}
 
-	max_ibs_dw = ring->funcs->emit_frame_size +
-		     amdgpu_ring_max_ibs(ring->funcs->type) * ring->funcs->emit_ib_size;
-	max_ibs_dw = (max_ibs_dw + ring->funcs->align_mask) & ~ring->funcs->align_mask;
+		max_ibs_dw = ring->funcs->emit_frame_size +
+			     amdgpu_ring_max_ibs(ring->funcs->type) * ring->funcs->emit_ib_size;
+		max_ibs_dw = (max_ibs_dw + ring->funcs->align_mask) & ~ring->funcs->align_mask;
 
-	if (WARN_ON(max_ibs_dw > max_dw))
-		max_dw = max_ibs_dw;
+		if (WARN_ON(max_ibs_dw > max_dw))
+			max_dw = max_ibs_dw;
 
-	ring->ring_size = roundup_pow_of_two(max_dw * 4 * sched_hw_submission);
+		ring->ring_size = roundup_pow_of_two(max_dw * 4 * sched_hw_submission);
+	} else {
+		ring->ring_size = roundup_pow_of_two(max_dw * 4);
+		ring->count_dw = (ring->ring_size - 4) >> 2;
+		/* ring buffer is empty now */
+		ring->wptr = *ring->rptr_cpu_addr = 0;
+	}
 
 	ring->buf_mask = (ring->ring_size / 4) - 1;
 	ring->ptr_mask = ring->funcs->support_64bit_ptrs ?
@@ -493,6 +500,7 @@ static ssize_t amdgpu_debugfs_ring_read(struct file *f, char __user *buf,
 {
 	struct amdgpu_ring *ring = file_inode(f)->i_private;
 	uint32_t value, result, early[3];
+	uint64_t p;
 	loff_t i;
 	int r;
 
@@ -502,13 +510,18 @@ static ssize_t amdgpu_debugfs_ring_read(struct file *f, char __user *buf,
 	result = 0;
 
 	if (*pos < 12) {
+		if (ring->funcs->type == AMDGPU_RING_TYPE_CPER)
+			mutex_lock(&ring->adev->cper.ring_lock);
+
 		early[0] = amdgpu_ring_get_rptr(ring) & ring->buf_mask;
 		early[1] = amdgpu_ring_get_wptr(ring) & ring->buf_mask;
 		early[2] = ring->wptr & ring->buf_mask;
 		for (i = *pos / 4; i < 3 && size; i++) {
 			r = put_user(early[i], (uint32_t *)buf);
-			if (r)
-				return r;
+			if (r) {
+				result = r;
+				goto out;
+			}
 			buf += 4;
 			result += 4;
 			size -= 4;
@@ -516,20 +529,50 @@ static ssize_t amdgpu_debugfs_ring_read(struct file *f, char __user *buf,
 		}
 	}
 
-	while (size) {
-		if (*pos >= (ring->ring_size + 12))
-			return result;
+	if (ring->funcs->type != AMDGPU_RING_TYPE_CPER) {
+		while (size) {
+			if (*pos >= (ring->ring_size + 12))
+				return result;
 
-		value = ring->ring[(*pos - 12)/4];
-		r = put_user(value, (uint32_t *)buf);
-		if (r)
-			return r;
-		buf += 4;
-		result += 4;
-		size -= 4;
-		*pos += 4;
+			value = ring->ring[(*pos - 12)/4];
+			r = put_user(value, (uint32_t *)buf);
+			if (r)
+				return r;
+			buf += 4;
+			result += 4;
+			size -= 4;
+			*pos += 4;
+		}
+	} else {
+		p = early[0];
+		if (early[0] <= early[1])
+			size = (early[1] - early[0]);
+		else
+			size = ring->ring_size - (early[0] - early[1]);
+
+		while (size) {
+			if (p == early[1])
+				goto out;
+
+			value = ring->ring[p];
+			r = put_user(value, (uint32_t *)buf);
+			if (r) {
+				result = r;
+				goto out;
+			}
+
+			buf += 4;
+			result += 4;
+			size--;
+			p++;
+			p &= ring->ptr_mask;
+		}
 	}
 
+out:
+	if (ring->funcs->type == AMDGPU_RING_TYPE_CPER)
+		mutex_unlock(&ring->adev->cper.ring_lock);
+
 	return result;
 }