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drm/xe/pf: Reprovision scheduling to default when no VFs

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Once we have disabled VFs there is no point in keeping potentially
limited PF scheduling provisioning as we want to complete a cleanup
of the VFs resources and return to the pure native mode, the same
as before VFs were enabled, as soon as possible.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patch.msgid.link/20260402191726.4932-11-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2026-04-02 21:17:23 +02:00
parent 55d1945636
commit 24ac010a97
3 changed files with 42 additions and 0 deletions
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2
drivers/gpu/drm/xe/xe_pci_sriov.c
View File

@ -191,6 +191,8 @@ static int pf_disable_vfs(struct xe_device *xe)
pci_disable_sriov(pdev);
xe_sriov_pf_reprovision_default(xe);
pf_reset_vfs(xe, num_vfs);
xe_sriov_pf_unprovision_vfs(xe, num_vfs);

39
drivers/gpu/drm/xe/xe_sriov_pf_provision.c
View File

@ -103,6 +103,45 @@ int xe_sriov_pf_unprovision_vfs(struct xe_device *xe, unsigned int num_vfs)
return 0;
}
static int pf_reprovision_default(struct xe_device *xe)
{
struct xe_gt *gt;
unsigned int id;
int result = 0;
int err;
guard(mutex)(xe_sriov_pf_master_mutex(xe));
for_each_gt(gt, xe, id) {
err = xe_gt_sriov_pf_policy_set_sched_if_idle_locked(gt, false);
result = result ?: err;
err = xe_gt_sriov_pf_config_set_exec_quantum_locked(gt, PFID, 0);
result = result ?: err;
err = xe_gt_sriov_pf_config_set_preempt_timeout_locked(gt, PFID, 0);
result = result ?: err;
}
return result;
}
/**
* xe_sriov_pf_reprovision_default() - Reprovision default PF in auto-mode.
* @xe: the PF &xe_device
*
* This function can only be called on PF.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_reprovision_default(struct xe_device *xe)
{
xe_assert(xe, IS_SRIOV_PF(xe));
if (!pf_auto_provisioning_mode(xe))
return 0;
return pf_reprovision_default(xe);
}
/**
* xe_sriov_pf_provision_set_mode() - Change VFs provision mode.
* @xe: the PF &xe_device

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

@ -30,6 +30,7 @@ int xe_sriov_pf_provision_query_vf_vram(struct xe_device *xe, unsigned int vfid,
int xe_sriov_pf_provision_vfs(struct xe_device *xe, unsigned int num_vfs);
int xe_sriov_pf_unprovision_vfs(struct xe_device *xe, unsigned int num_vfs);
int xe_sriov_pf_reprovision_default(struct xe_device *xe);
int xe_sriov_pf_provision_set_mode(struct xe_device *xe, enum xe_sriov_provisioning_mode mode);