[v3 3/3] drm/amdgpu: Add soft reset callback to SDMA v4.4.x

[Jesse Zhang]

Implement soft reset engine callback for SDMA 4.4.x IPs. This avoids IP
version check in generic implementation.

V2: Correct physical instance ID calculation in soft_reset_engine (Jesse)

Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c | 34 +++---------------------
 drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c | 10 +++++++
 2 files changed, 14 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
index 9b54a1ece447..a1e54bcef495 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
@@ -534,37 +534,11 @@ bool amdgpu_sdma_is_shared_inv_eng(struct amdgpu_device *adev, struct amdgpu_rin
 static int amdgpu_sdma_soft_reset(struct amdgpu_device *adev, u32 instance_id)
 {
 	struct amdgpu_sdma_instance *sdma_instance = &adev->sdma.instance[instance_id];
-	int r = -EOPNOTSUPP;
-
-	switch (amdgpu_ip_version(adev, SDMA0_HWIP, 0)) {
-	case IP_VERSION(4, 4, 2):
-	case IP_VERSION(4, 4, 4):
-	case IP_VERSION(4, 4, 5):
-		/* For SDMA 4.x, use the existing DPM interface for backward compatibility,
-		 * we need to convert the logical instance ID to physical instance ID before reset.
-		 */
-		r = amdgpu_dpm_reset_sdma(adev, 1 << GET_INST(SDMA0, instance_id));
-		break;
-	case IP_VERSION(5, 0, 0):
-	case IP_VERSION(5, 0, 1):
-	case IP_VERSION(5, 0, 2):
-	case IP_VERSION(5, 0, 5):
-	case IP_VERSION(5, 2, 0):
-	case IP_VERSION(5, 2, 2):
-	case IP_VERSION(5, 2, 4):
-	case IP_VERSION(5, 2, 5):
-	case IP_VERSION(5, 2, 6):
-	case IP_VERSION(5, 2, 3):
-	case IP_VERSION(5, 2, 1):
-	case IP_VERSION(5, 2, 7):
-		if (sdma_instance->funcs->soft_reset_kernel_queue)
-			r = sdma_instance->funcs->soft_reset_kernel_queue(adev, instance_id);
-		break;
-	default:
-		break;
-	}
 
-	return r;
+	if (sdma_instance->funcs->soft_reset_kernel_queue)
+		return sdma_instance->funcs->soft_reset_kernel_queue(adev, instance_id);
+
+	return -EOPNOTSUPP;
 }
 
 /**
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
index 3de125062ee3..ea0eabd9166e 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
@@ -109,6 +109,8 @@ static void sdma_v4_4_2_set_ras_funcs(struct amdgpu_device *adev);
 static void sdma_v4_4_2_update_reset_mask(struct amdgpu_device *adev);
 static int sdma_v4_4_2_stop_queue(struct amdgpu_ring *ring);
 static int sdma_v4_4_2_restore_queue(struct amdgpu_ring *ring);
+static int sdma_v4_4_2_soft_reset_engine(struct amdgpu_device *adev,
+					 u32 instance_id);
 
 static u32 sdma_v4_4_2_get_reg_offset(struct amdgpu_device *adev,
 		u32 instance, u32 offset)
@@ -1337,6 +1339,7 @@ static bool sdma_v4_4_2_fw_support_paging_queue(struct amdgpu_device *adev)
 static const struct amdgpu_sdma_funcs sdma_v4_4_2_sdma_funcs = {
 	.stop_kernel_queue = &sdma_v4_4_2_stop_queue,
 	.start_kernel_queue = &sdma_v4_4_2_restore_queue,
+	.soft_reset_kernel_queue = &sdma_v4_4_2_soft_reset_engine,
 };
 
 static int sdma_v4_4_2_early_init(struct amdgpu_ip_block *ip_block)
@@ -1745,6 +1748,13 @@ static int sdma_v4_4_2_restore_queue(struct amdgpu_ring *ring)
 	return sdma_v4_4_2_inst_start(adev, inst_mask, true);
 }
 
+static int sdma_v4_4_2_soft_reset_engine(struct amdgpu_device *adev,
+					 u32 instance_id)
+{
+	/* For SDMA 4.x, use the existing DPM interface for backward compatibility */
+	return amdgpu_dpm_reset_sdma(adev, 1 << GET_INST(SDMA0, instance_id));
+}
+
 static int sdma_v4_4_2_set_trap_irq_state(struct amdgpu_device *adev,
 					struct amdgpu_irq_src *source,
 					unsigned type,
-- 
2.34.1