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drm/xe/pf: Check EQ/PT/PRIO when testing VF config

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In addition to the hard resources (like GGTT, CTXs, DBs) we should
also check if VF was already configured (by sysfs or debugfs) with
optional parameters like execution quantum (EQ), preemption timeout
(PT) or scheduling priority (PRIO) as otherwise we might miss to
send to the GuC updated latest values after a resume or GT reset.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patch.msgid.link/20260402191726.4932-9-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2026-04-02 21:17:21 +02:00
parent 43533f75c4
commit 0701bf6fce
1 changed files with 32 additions and 0 deletions
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32
drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
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@ -2090,6 +2090,17 @@ static u32 pf_get_exec_quantum(struct xe_gt *gt, unsigned int vfid)
return config->exec_quantum[0];
}
static bool pf_non_default_exec_quantum(struct xe_gt *gt, unsigned int vfid)
{
struct xe_gt_sriov_config *config = pf_pick_vf_config(gt, vfid);
int i;
for (i = 0; i < ARRAY_SIZE(config->exec_quantum); i++)
if (config->exec_quantum[i])
return true;
return false;
}
/**
* xe_gt_sriov_pf_config_set_exec_quantum_locked() - Configure PF/VF execution quantum.
* @gt: the &xe_gt
@ -2305,6 +2316,17 @@ static u32 pf_get_preempt_timeout(struct xe_gt *gt, unsigned int vfid)
return config->preempt_timeout[0];
}
static bool pf_non_default_preempt_timeout(struct xe_gt *gt, unsigned int vfid)
{
struct xe_gt_sriov_config *config = pf_pick_vf_config(gt, vfid);
int i;
for (i = 0; i < ARRAY_SIZE(config->preempt_timeout); i++)
if (config->preempt_timeout[i])
return true;
return false;
}
/**
* xe_gt_sriov_pf_config_set_preempt_timeout_locked() - Configure PF/VF preemption timeout.
* @gt: the &xe_gt
@ -2603,6 +2625,13 @@ static void pf_reset_config_sched(struct xe_gt *gt, struct xe_gt_sriov_config *c
}
}
static bool pf_non_default_sched(struct xe_gt *gt, unsigned int vfid)
{
return pf_non_default_exec_quantum(gt, vfid) ||
pf_non_default_preempt_timeout(gt, vfid) ||
custom_sched_priority(gt, pf_get_sched_priority(gt, vfid));
}
static int pf_provision_threshold(struct xe_gt *gt, unsigned int vfid,
enum xe_guc_klv_threshold_index index, u32 value)
{
@ -2879,6 +2908,9 @@ static int pf_validate_vf_config(struct xe_gt *gt, unsigned int vfid)
valid_all = valid_all && valid_lmem;
}
/* also check optional EQ/PT/PRIO */
valid_any = valid_any || pf_non_default_sched(gt, vfid);
return valid_all ? 0 : valid_any ? -ENOKEY : -ENODATA;
}