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// SPDX-License-Identifier: MIT
/*
* Copyright © 2023-2024 Intel Corporation
*/
#include "abi/guc_actions_sriov_abi.h"
#include "abi/guc_messages_abi.h"
#include "xe_gt_sriov_pf_config.h"
#include "xe_gt_sriov_pf_helpers.h"
#include "xe_gt_sriov_pf_monitor.h"
#include "xe_gt_sriov_printk.h"
#include "xe_guc_klv_helpers.h"
#include "xe_guc_klv_thresholds_set.h"
/**
* xe_gt_sriov_pf_monitor_flr - Cleanup VF data after VF FLR.
* @gt: the &xe_gt
* @vfid: the VF identifier
*
* On FLR this function will reset all event data related to the VF.
* This function is for PF only.
*/
void xe_gt_sriov_pf_monitor_flr(struct xe_gt *gt, u32 vfid)
{
int e;
xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));
xe_gt_sriov_pf_assert_vfid(gt, vfid);
for (e = 0; e < XE_GUC_KLV_NUM_THRESHOLDS; e++)
gt->sriov.pf.vfs[vfid].monitor.guc.events[e] = 0;
}
static void pf_update_event_counter(struct xe_gt *gt, u32 vfid,
enum xe_guc_klv_threshold_index e)
{
xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));
xe_gt_assert(gt, e < XE_GUC_KLV_NUM_THRESHOLDS);
gt->sriov.pf.vfs[vfid].monitor.guc.events[e]++;
}
static int pf_handle_vf_threshold_event(struct xe_gt *gt, u32 vfid, u32 threshold)
{
char origin[8];
int e;
e = xe_guc_klv_threshold_key_to_index(threshold);
xe_sriov_function_name(vfid, origin, sizeof(origin));
/* was there a new KEY added that we missed? */
if (unlikely(e < 0)) {
xe_gt_sriov_notice(gt, "unknown threshold key %#x reported for %s\n",
threshold, origin);
return -ENOTCONN;
}
xe_gt_sriov_dbg(gt, "%s exceeded threshold %u %s\n",
origin, xe_gt_sriov_pf_config_get_threshold(gt, vfid, e),
xe_guc_klv_key_to_string(threshold));
pf_update_event_counter(gt, vfid, e);
return 0;
}
/**
* xe_gt_sriov_pf_monitor_process_guc2pf - Handle adverse event notification from the GuC.
* @gt: the &xe_gt
* @msg: G2H event message
* @len: length of the message
*
* This function is intended for PF only.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_gt_sriov_pf_monitor_process_guc2pf(struct xe_gt *gt, const u32 *msg, u32 len)
{
struct xe_device *xe = gt_to_xe(gt);
u32 vfid;
u32 threshold;
xe_gt_assert(gt, len >= GUC_HXG_MSG_MIN_LEN);
xe_gt_assert(gt, FIELD_GET(GUC_HXG_MSG_0_ORIGIN, msg[0]) == GUC_HXG_ORIGIN_GUC);
xe_gt_assert(gt, FIELD_GET(GUC_HXG_MSG_0_TYPE, msg[0]) == GUC_HXG_TYPE_EVENT);
xe_gt_assert(gt, FIELD_GET(GUC_HXG_EVENT_MSG_0_ACTION, msg[0]) ==
GUC_ACTION_GUC2PF_ADVERSE_EVENT);
if (unlikely(!IS_SRIOV_PF(xe)))
return -EPROTO;
if (unlikely(FIELD_GET(GUC2PF_ADVERSE_EVENT_EVENT_MSG_0_MBZ, msg[0])))
return -EPFNOSUPPORT;
if (unlikely(len < GUC2PF_ADVERSE_EVENT_EVENT_MSG_LEN))
return -EPROTO;
vfid = FIELD_GET(GUC2PF_ADVERSE_EVENT_EVENT_MSG_1_VFID, msg[1]);
threshold = FIELD_GET(GUC2PF_ADVERSE_EVENT_EVENT_MSG_2_THRESHOLD, msg[2]);
if (unlikely(vfid > xe_gt_sriov_pf_get_totalvfs(gt)))
return -EINVAL;
return pf_handle_vf_threshold_event(gt, vfid, threshold);
}
/**
* xe_gt_sriov_pf_monitor_print_events - Print adverse events counters.
* @gt: the &xe_gt to print events from
* @p: the &drm_printer
*
* Print adverse events counters for all VFs.
* VFs with no events are not printed.
*
* This function can only be called on PF.
*/
void xe_gt_sriov_pf_monitor_print_events(struct xe_gt *gt, struct drm_printer *p)
{
unsigned int n, total_vfs = xe_gt_sriov_pf_get_totalvfs(gt);
const struct xe_gt_sriov_monitor *data;
int e;
xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));
for (n = 1; n <= total_vfs; n++) {
data = >->sriov.pf.vfs[n].monitor;
for (e = 0; e < XE_GUC_KLV_NUM_THRESHOLDS; e++)
if (data->guc.events[e])
break;
/* skip empty unless in debug mode */
if (e >= XE_GUC_KLV_NUM_THRESHOLDS &&
!IS_ENABLED(CONFIG_DRM_XE_DEBUG_SRIOV))
continue;
#define __format(...) "%s:%u "
#define __value(TAG, NAME, ...) , #NAME, data->guc.events[MAKE_XE_GUC_KLV_THRESHOLD_INDEX(TAG)]
drm_printf(p, "VF%u:\t" MAKE_XE_GUC_KLV_THRESHOLDS_SET(__format) "\n",
n MAKE_XE_GUC_KLV_THRESHOLDS_SET(__value));
#undef __format
#undef __value
}
}
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