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drm/xe/vf: Obtain value of GMDID register from GuC

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VFs don't have access to the GMDID register and must obtain it
value using GuC VF ABI KLV query. Add function for doing that.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240523192240.844-4-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2024-05-23 21:22:37 +02:00
parent e70aa1016e
commit 2948b24233
2 changed files with 30 additions and 0 deletions
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29
drivers/gpu/drm/xe/xe_gt_sriov_vf.c
View File

@ -284,6 +284,35 @@ static int guc_action_query_single_klv64(struct xe_guc *guc, u32 key, u64 *value
return 0;
}
/**
* xe_gt_sriov_vf_gmdid - Query GMDID over MMIO.
* @gt: the &xe_gt
*
* This function is for VF use only.
*
* Return: value of GMDID KLV on success or 0 on failure.
*/
u32 xe_gt_sriov_vf_gmdid(struct xe_gt *gt)
{
const char *type = xe_gt_is_media_type(gt) ? "media" : "graphics";
struct xe_guc *guc = &gt->uc.guc;
u32 value;
int err;
xe_gt_assert(gt, IS_SRIOV_VF(gt_to_xe(gt)));
xe_gt_assert(gt, gt->sriov.vf.guc_version.major > 1 || gt->sriov.vf.guc_version.minor >= 2);
err = guc_action_query_single_klv32(guc, GUC_KLV_GLOBAL_CFG_GMD_ID_KEY, &value);
if (unlikely(err)) {
xe_gt_sriov_err(gt, "Failed to obtain %s GMDID (%pe)\n",
type, ERR_PTR(err));
return 0;
}
xe_gt_sriov_dbg(gt, "%s GMDID = %#x\n", type, value);
return value;
}
static int vf_get_ggtt_info(struct xe_gt *gt)
{
struct xe_gt_sriov_vf_selfconfig *config = &gt->sriov.vf.self_config;

1
drivers/gpu/drm/xe/xe_gt_sriov_vf.h
View File

@ -17,6 +17,7 @@ int xe_gt_sriov_vf_query_config(struct xe_gt *gt);
int xe_gt_sriov_vf_connect(struct xe_gt *gt);
int xe_gt_sriov_vf_query_runtime(struct xe_gt *gt);
u32 xe_gt_sriov_vf_gmdid(struct xe_gt *gt);
u16 xe_gt_sriov_vf_guc_ids(struct xe_gt *gt);
u32 xe_gt_sriov_vf_read32(struct xe_gt *gt, struct xe_reg reg);