[PATCH 2/2] drm/amdgpu: Enhance Cleaner Shader Handling in GFX v9.0 Architecture

[Srinivasan Shanmugam]

This commit modifies the gfx_v9_0_ring_emit_cleaner_shader function
to use a switch statement for cleaner shader emission based on the
specific GFX IP version.

The function now distinguishes between different IP versions, using
PACKET3_RUN_CLEANER_SHADER_9_0 for the versions 9.0.1, 9.1.0,
9.2.1, 9.2.2, 9.3.0, and 9.4.0, while retaining
PACKET3_RUN_CLEANER_SHADER for version 9.4.2.

Cc: Christian König <christian.koenig at amd.com>
Cc: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam at amd.com>
Suggested-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index e62c77b3934a..bfe66a0e0e71 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -7387,8 +7387,27 @@ static void gfx_v9_ip_dump(struct amdgpu_ip_block *ip_block)
 
 static void gfx_v9_0_ring_emit_cleaner_shader(struct amdgpu_ring *ring)
 {
+	struct amdgpu_device *adev = ring->adev;
+	unsigned int ip_version = amdgpu_ip_version(adev, GC_HWIP, 0);
+
 	/* Emit the cleaner shader */
-	amdgpu_ring_write(ring, PACKET3(PACKET3_RUN_CLEANER_SHADER, 0));
+	switch (ip_version) {
+	case IP_VERSION(9, 0, 1):
+	case IP_VERSION(9, 1, 0):
+	case IP_VERSION(9, 2, 1):
+	case IP_VERSION(9, 2, 2):
+	case IP_VERSION(9, 3, 0):
+	case IP_VERSION(9, 4, 0):
+		amdgpu_ring_write(ring, PACKET3(PACKET3_RUN_CLEANER_SHADER_9_0, 0));
+		break;
+	case IP_VERSION(9, 4, 2):
+		amdgpu_ring_write(ring, PACKET3(PACKET3_RUN_CLEANER_SHADER, 0));
+		break;
+	default:
+		dev_err(adev->dev, "Unknown IP version for Cleaner Shader: %u\n", ip_version);
+		break;
+	}
+
 	amdgpu_ring_write(ring, 0);  /* RESERVED field, programmed to zero */
 }
 
-- 
2.34.1