drm/amdgpu: Replace HQD terminology with slots naming

The term "HQD" is CP-specific and doesn't
accurately describe the queue resources for other IP blocks like SDMA,
VCN, or VPE. This change:

1. Renames `num_hqds` to `num_slots` in amdgpu_kms.c to better reflect
   the generic nature of the resource counting
2. Updates the UAPI struct member from `userq_num_hqds` to `userq_num_slots`
3. Maintains the same functionality while using more appropriate terminology

Signed-off-by: Jesse Zhang <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: Jie1zhang

drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c

@@ -399,7 +399,7 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
 	uint32_t ib_size_alignment = 0;
 	enum amd_ip_block_type type;
 	unsigned int num_rings = 0;
-	uint32_t num_hqds = 0;
+	uint32_t num_slots = 0;
 	unsigned int i, j;
 
 	if (info->query_hw_ip.ip_instance >= AMDGPU_HW_IP_INSTANCE_MAX_COUNT)
@@ -415,7 +415,7 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
 
 		if (!adev->gfx.disable_uq) {
 			for (i = 0; i < AMDGPU_MES_MAX_GFX_PIPES; i++)
-				num_hqds += hweight32(adev->mes.gfx_hqd_mask[i]);
+				num_slots += hweight32(adev->mes.gfx_hqd_mask[i]);
 		}
 
 		ib_start_alignment = 32;
@@ -430,7 +430,7 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
 
 		if (!adev->sdma.disable_uq) {
 			for (i = 0; i < AMDGPU_MES_MAX_COMPUTE_PIPES; i++)
-				num_hqds += hweight32(adev->mes.compute_hqd_mask[i]);
+				num_slots += hweight32(adev->mes.compute_hqd_mask[i]);
 		}
 
 		ib_start_alignment = 32;
@@ -445,7 +445,7 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
 
 		if (!adev->gfx.disable_uq) {
 			for (i = 0; i < AMDGPU_MES_MAX_SDMA_PIPES; i++)
-				num_hqds += hweight32(adev->mes.sdma_hqd_mask[i]);
+				num_slots += hweight32(adev->mes.sdma_hqd_mask[i]);
 		}
 
 		ib_start_alignment = 256;
@@ -589,7 +589,7 @@ static int amdgpu_hw_ip_info(struct amdgpu_device *adev,
 	}
 	result->capabilities_flags = 0;
 	result->available_rings = (1 << num_rings) - 1;
-	result->userq_num_hqds = num_hqds;
+	result->userq_num_slots = num_slots;
 	result->ib_start_alignment = ib_start_alignment;
 	result->ib_size_alignment = ib_size_alignment;
 	return 0;

include/uapi/drm/amdgpu_drm.h

@@ -1493,8 +1493,8 @@ struct drm_amdgpu_info_hw_ip {
 	__u32  available_rings;
 	/** version info: bits 23:16 major, 15:8 minor, 7:0 revision */
 	__u32  ip_discovery_version;
-	/* Userq available hqds */
-	__u32  userq_num_hqds;
+	/* Userq available slots */
+	__u32  userq_num_slots;
 };
 
 /* GFX metadata BO sizes and alignment info (in bytes) */