drm/xe/pf: Fix VF config validation on multi-GT platforms

When validating VF config on the media GT, we may wrongly report
that VF is already partially configured on it, as we consider GGTT
and LMEM provisioning done on the primary GT (since both GGTT and
LMEM are tile-level resources, not a GT-level).

This will cause skipping a VF auto-provisioning on the media-GT and
in result will block a VF from successfully initialize that GT.

Fix that by considering GGTT and LMEM configurations only when
checking if a VF provisioning is complete, and omit GGTT and LMEM
when reporting empty/partial provisioning.

Fixes: 234670cea9a2 ("drm/xe/pf: Skip fair VFs provisioning if already provisioned")
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Piotr Piórkowski <piotr.piorkowski@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240806180516.618-1-michal.wajdeczko@intel.com
(cherry picked from commit 5bdacb0907c1f531995b6ba47b832ac3a0182ae9)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
index 4699b78360013c1e16805d30aa9d5d306e43c321..b6f0a7299c030915cc9f556fa3c6a22705c369f7 100644 (file)
--- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
@@ -1927,6 +1927,7 @@ static int pf_validate_vf_config(struct xe_gt *gt, unsigned int vfid)
 {
        struct xe_gt *primary_gt = gt_to_tile(gt)->primary_gt;
        struct xe_device *xe = gt_to_xe(gt);
+       bool is_primary = !xe_gt_is_media_type(gt);
        bool valid_ggtt, valid_ctxs, valid_dbs;
        bool valid_any, valid_all;
 
@@ -1935,13 +1936,17 @@ static int pf_validate_vf_config(struct xe_gt *gt, unsigned int vfid)
        valid_dbs = pf_get_vf_config_dbs(gt, vfid);
 
        /* note that GuC doorbells are optional */
-       valid_any = valid_ggtt || valid_ctxs || valid_dbs;
-       valid_all = valid_ggtt && valid_ctxs;
+       valid_any = valid_ctxs || valid_dbs;
+       valid_all = valid_ctxs;
+
+       /* and GGTT/LMEM is configured on primary GT only */
+       valid_all = valid_all && valid_ggtt;
+       valid_any = valid_any || (valid_ggtt && is_primary);
 
        if (IS_DGFX(xe)) {
                bool valid_lmem = pf_get_vf_config_ggtt(primary_gt, vfid);
 
-               valid_any = valid_any || valid_lmem;
+               valid_any = valid_any || (valid_lmem && is_primary);
                valid_all = valid_all && valid_lmem;
        }