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// SPDX-License-Identifier: MIT
/*
* Copyright © 2025 Intel Corporation
*/
#include "xe_device.h"
#include "xe_gt_sriov_pf_control.h"
#include "xe_gt_sriov_pf_migration.h"
#include "xe_sriov_packet.h"
#include "xe_sriov_pf_control.h"
#include "xe_sriov_printk.h"
/**
* xe_sriov_pf_control_pause_vf() - Pause a VF on all GTs.
* @xe: the &xe_device
* @vfid: the VF identifier (can't be 0 == PFID)
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_pause_vf(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int result = 0;
int err;
for_each_gt(gt, xe, id) {
err = xe_gt_sriov_pf_control_pause_vf(gt, vfid);
result = result ? -EUCLEAN : err;
}
if (result)
return result;
xe_sriov_info(xe, "VF%u paused!\n", vfid);
return 0;
}
/**
* xe_sriov_pf_control_resume_vf() - Resume a VF on all GTs.
* @xe: the &xe_device
* @vfid: the VF identifier
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_resume_vf(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int result = 0;
int err;
for_each_gt(gt, xe, id) {
err = xe_gt_sriov_pf_control_resume_vf(gt, vfid);
result = result ? -EUCLEAN : err;
}
if (result)
return result;
xe_sriov_info(xe, "VF%u resumed!\n", vfid);
return 0;
}
/**
* xe_sriov_pf_control_stop_vf - Stop a VF on all GTs.
* @xe: the &xe_device
* @vfid: the VF identifier
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_stop_vf(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int result = 0;
int err;
for_each_gt(gt, xe, id) {
err = xe_gt_sriov_pf_control_stop_vf(gt, vfid);
result = result ? -EUCLEAN : err;
}
if (result)
return result;
xe_sriov_info(xe, "VF%u stopped!\n", vfid);
return 0;
}
/**
* xe_sriov_pf_control_reset_vf() - Perform a VF reset (FLR).
* @xe: the &xe_device
* @vfid: the VF identifier
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_reset_vf(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int result = 0;
int err;
for_each_gt(gt, xe, id) {
err = xe_gt_sriov_pf_control_trigger_flr(gt, vfid);
result = result ? -EUCLEAN : err;
}
for_each_gt(gt, xe, id) {
err = xe_gt_sriov_pf_control_wait_flr(gt, vfid);
result = result ? -EUCLEAN : err;
}
return result;
}
/**
* xe_sriov_pf_control_wait_flr() - Wait for a VF reset (FLR) to complete.
* @xe: the &xe_device
* @vfid: the VF identifier
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_wait_flr(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int result = 0;
int err;
for_each_gt(gt, xe, id) {
err = xe_gt_sriov_pf_control_wait_flr(gt, vfid);
result = result ? -EUCLEAN : err;
}
return result;
}
/**
* xe_sriov_pf_control_sync_flr() - Synchronize a VF FLR between all GTs.
* @xe: the &xe_device
* @vfid: the VF identifier
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_sync_flr(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int ret;
for_each_gt(gt, xe, id) {
ret = xe_gt_sriov_pf_control_sync_flr(gt, vfid, false);
if (ret < 0)
return ret;
}
for_each_gt(gt, xe, id) {
ret = xe_gt_sriov_pf_control_sync_flr(gt, vfid, true);
if (ret < 0)
return ret;
}
return 0;
}
/**
* xe_sriov_pf_control_trigger_save_vf() - Start VF migration data SAVE sequence on all GTs.
* @xe: the &xe_device
* @vfid: the VF identifier
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_trigger_save_vf(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int ret;
ret = xe_sriov_packet_save_init(xe, vfid);
if (ret)
return ret;
for_each_gt(gt, xe, id) {
xe_gt_sriov_pf_migration_save_init(gt, vfid);
ret = xe_gt_sriov_pf_control_trigger_save_vf(gt, vfid);
if (ret)
return ret;
}
return 0;
}
/**
* xe_sriov_pf_control_finish_save_vf() - Complete VF migration data SAVE sequence on all GTs.
* @xe: the &xe_device
* @vfid: the VF identifier
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_finish_save_vf(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int ret;
for_each_gt(gt, xe, id) {
ret = xe_gt_sriov_pf_control_finish_save_vf(gt, vfid);
if (ret)
break;
}
return ret;
}
/**
* xe_sriov_pf_control_trigger_restore_vf() - Start VF migration data RESTORE sequence on all GTs.
* @xe: the &xe_device
* @vfid: the VF identifier
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_trigger_restore_vf(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int ret;
for_each_gt(gt, xe, id) {
ret = xe_gt_sriov_pf_control_trigger_restore_vf(gt, vfid);
if (ret)
return ret;
}
return ret;
}
/**
* xe_sriov_pf_control_finish_restore_vf() - Complete VF migration data RESTORE sequence on all GTs.
* @xe: the &xe_device
* @vfid: the VF identifier
*
* This function is for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_sriov_pf_control_finish_restore_vf(struct xe_device *xe, unsigned int vfid)
{
struct xe_gt *gt;
unsigned int id;
int ret;
for_each_gt(gt, xe, id) {
ret = xe_gt_sriov_pf_control_finish_restore_vf(gt, vfid);
if (ret)
break;
}
return ret;
}
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