Merge tag 'amd-drm-next-6.13-2024-10-25' of https://gitlab.freedesktop.org/agd5f/linux into drm-next

amd-drm-next-6.13-2024-10-25:

amdgpu:
- SDMA queue reset support
- SMU 13.0.6 updates
- Add debugfs interface to help limit jpeg queue scheduling for testing
- JPEG 4.0.3 updates
- Initial runtime repartitioning support
- GFX9 fixes
- Misc code cleanups
- Rework IP structures to better handle multiple instances of an IP
- DML updates
- DSC fixes
- HDR fixes
- Brightness control updates
- Runtime pm cleanup
- DMCUB fixes
- DCN 3.5 updates
- Struct drm_edid cleanup
- Fetch EDID from _DDC if available
- Ring noop optimizations
- MES logging fixes
- 3DLUT fixes
- DCN 4.x fixes
- SMU 13.x fixes
- Fixes for set_soft_freq_range()
- ACPI fixes
- SMU 14.x updates
- PSR-SU fixes
- fdinfo cleanup
- DCN documentation updates

amdkfd:
- Misc code cleanups
- Increase event FIFO size
- Copy wave state fixes for SDMA

radeon:
- Fix possible overflow in packet3 check
- Late init connector fix
- Always set GEM function pointer

Documentation:
- Update drm-memory documentation

From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241025132336.2416913-1-alexander.deucher@amd.com
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 22 insertions, 3 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index 690976665cf6..42f616c05f50 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -108,10 +108,26 @@ int amdgpu_ring_alloc(struct amdgpu_ring *ring, unsigned int ndw)
  */
 void amdgpu_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
 {
-	int i;
+	uint32_t occupied, chunk1, chunk2;
+	uint32_t *dst;
 
-	for (i = 0; i < count; i++)
-		amdgpu_ring_write(ring, ring->funcs->nop);
+	occupied = ring->wptr & ring->buf_mask;
+	dst = (void *)&ring->ring[occupied];
+	chunk1 = ring->buf_mask + 1 - occupied;
+	chunk1 = (chunk1 >= count) ? count : chunk1;
+	chunk2 = count - chunk1;
+
+	if (chunk1)
+		memset32(dst, ring->funcs->nop, chunk1);
+
+	if (chunk2) {
+		dst = (void *)ring->ring;
+		memset32(dst, ring->funcs->nop, chunk2);
+	}
+
+	ring->wptr += count;
+	ring->wptr &= ring->ptr_mask;
+	ring->count_dw -= count;
 }
 
 /**
@@ -141,6 +157,9 @@ void amdgpu_ring_commit(struct amdgpu_ring *ring)
 {
 	uint32_t count;
 
+	if (ring->count_dw < 0)
+		DRM_ERROR("amdgpu: writing more dwords to the ring than expected!\n");
+
 	/* We pad to match fetch size */
 	count = ring->funcs->align_mask + 1 -
 		(ring->wptr & ring->funcs->align_mask);