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drm/amdgpu: Calculate IP specific xgmi bandwidth

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Use IP version specific xgmi speed/width for bandwidth calculation.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Jonathan Kim <jonathan.kim@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2025-02-06 17:40:42 +05:30 committed by Alex Deucher
parent 2bc016737a
commit 357506799b
2 changed files with 6 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -2757,6 +2757,9 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
if (!total)
return -ENODEV;
if (adev->gmc.xgmi.supported)
amdgpu_xgmi_early_init(adev);
ip_block = amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_GFX);
if (ip_block->status.valid != false)
amdgpu_amdkfd_device_probe(adev);

4
drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
View File

@ -844,7 +844,9 @@ int amdgpu_xgmi_get_bandwidth(struct amdgpu_device *adev, struct amdgpu_device *
{
bool peer_mode = bw_mode == AMDGPU_XGMI_BW_MODE_PER_PEER;
int unit_scale = bw_unit == AMDGPU_XGMI_BW_UNIT_MBYTES ? 1000 : 1;
int speed = 25, num_lanes = 16, num_links = !peer_mode ? 1 : -1;
int num_lanes = adev->gmc.xgmi.max_width;
int speed = adev->gmc.xgmi.max_speed;
int num_links = !peer_mode ? 1 : -1;
if (!(min_bw && max_bw))
return -EINVAL;