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1// SPDX-License-Identifier: MIT2/*3 * Copyright © 2023-2024 Intel Corporation4 */5 6#include "abi/guc_actions_sriov_abi.h"7#include "abi/guc_messages_abi.h"8 9#include "xe_gt_sriov_pf_config.h"10#include "xe_gt_sriov_pf_helpers.h"11#include "xe_gt_sriov_pf_monitor.h"12#include "xe_gt_sriov_printk.h"13#include "xe_guc_klv_helpers.h"14#include "xe_guc_klv_thresholds_set.h"15 16/**17 * xe_gt_sriov_pf_monitor_flr - Cleanup VF data after VF FLR.18 * @gt: the &xe_gt19 * @vfid: the VF identifier20 *21 * On FLR this function will reset all event data related to the VF.22 * This function is for PF only.23 */24void xe_gt_sriov_pf_monitor_flr(struct xe_gt *gt, u32 vfid)25{26 int e;27 28 xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));29 xe_gt_sriov_pf_assert_vfid(gt, vfid);30 31 for (e = 0; e < XE_GUC_KLV_NUM_THRESHOLDS; e++)32 gt->sriov.pf.vfs[vfid].monitor.guc.events[e] = 0;33}34 35static void pf_update_event_counter(struct xe_gt *gt, u32 vfid,36 enum xe_guc_klv_threshold_index e)37{38 xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));39 xe_gt_assert(gt, e < XE_GUC_KLV_NUM_THRESHOLDS);40 41 gt->sriov.pf.vfs[vfid].monitor.guc.events[e]++;42}43 44static int pf_handle_vf_threshold_event(struct xe_gt *gt, u32 vfid, u32 threshold)45{46 char origin[8];47 int e;48 49 e = xe_guc_klv_threshold_key_to_index(threshold);50 xe_sriov_function_name(vfid, origin, sizeof(origin));51 52 /* was there a new KEY added that we missed? */53 if (unlikely(e < 0)) {54 xe_gt_sriov_notice(gt, "unknown threshold key %#x reported for %s\n",55 threshold, origin);56 return -ENOTCONN;57 }58 59 xe_gt_sriov_dbg(gt, "%s exceeded threshold %u %s\n",60 origin, xe_gt_sriov_pf_config_get_threshold(gt, vfid, e),61 xe_guc_klv_key_to_string(threshold));62 63 pf_update_event_counter(gt, vfid, e);64 65 return 0;66}67 68/**69 * xe_gt_sriov_pf_monitor_process_guc2pf - Handle adverse event notification from the GuC.70 * @gt: the &xe_gt71 * @msg: G2H event message72 * @len: length of the message73 *74 * This function is intended for PF only.75 *76 * Return: 0 on success or a negative error code on failure.77 */78int xe_gt_sriov_pf_monitor_process_guc2pf(struct xe_gt *gt, const u32 *msg, u32 len)79{80 struct xe_device *xe = gt_to_xe(gt);81 u32 vfid;82 u32 threshold;83 84 xe_gt_assert(gt, len >= GUC_HXG_MSG_MIN_LEN);85 xe_gt_assert(gt, FIELD_GET(GUC_HXG_MSG_0_ORIGIN, msg[0]) == GUC_HXG_ORIGIN_GUC);86 xe_gt_assert(gt, FIELD_GET(GUC_HXG_MSG_0_TYPE, msg[0]) == GUC_HXG_TYPE_EVENT);87 xe_gt_assert(gt, FIELD_GET(GUC_HXG_EVENT_MSG_0_ACTION, msg[0]) ==88 GUC_ACTION_GUC2PF_ADVERSE_EVENT);89 90 if (unlikely(!IS_SRIOV_PF(xe)))91 return -EPROTO;92 93 if (unlikely(FIELD_GET(GUC2PF_ADVERSE_EVENT_EVENT_MSG_0_MBZ, msg[0])))94 return -EPFNOSUPPORT;95 96 if (unlikely(len < GUC2PF_ADVERSE_EVENT_EVENT_MSG_LEN))97 return -EPROTO;98 99 vfid = FIELD_GET(GUC2PF_ADVERSE_EVENT_EVENT_MSG_1_VFID, msg[1]);100 threshold = FIELD_GET(GUC2PF_ADVERSE_EVENT_EVENT_MSG_2_THRESHOLD, msg[2]);101 102 if (unlikely(vfid > xe_gt_sriov_pf_get_totalvfs(gt)))103 return -EINVAL;104 105 return pf_handle_vf_threshold_event(gt, vfid, threshold);106}107 108/**109 * xe_gt_sriov_pf_monitor_print_events - Print adverse events counters.110 * @gt: the &xe_gt to print events from111 * @p: the &drm_printer112 *113 * Print adverse events counters for all VFs.114 * VFs with no events are not printed.115 *116 * This function can only be called on PF.117 */118void xe_gt_sriov_pf_monitor_print_events(struct xe_gt *gt, struct drm_printer *p)119{120 unsigned int n, total_vfs = xe_gt_sriov_pf_get_totalvfs(gt);121 const struct xe_gt_sriov_monitor *data;122 int e;123 124 xe_gt_assert(gt, IS_SRIOV_PF(gt_to_xe(gt)));125 126 for (n = 1; n <= total_vfs; n++) {127 data = >->sriov.pf.vfs[n].monitor;128 129 for (e = 0; e < XE_GUC_KLV_NUM_THRESHOLDS; e++)130 if (data->guc.events[e])131 break;132 133 /* skip empty unless in debug mode */134 if (e >= XE_GUC_KLV_NUM_THRESHOLDS &&135 !IS_ENABLED(CONFIG_DRM_XE_DEBUG_SRIOV))136 continue;137 138#define __format(...) "%s:%u "139#define __value(TAG, NAME, ...) , #NAME, data->guc.events[MAKE_XE_GUC_KLV_THRESHOLD_INDEX(TAG)]140 141 drm_printf(p, "VF%u:\t" MAKE_XE_GUC_KLV_THRESHOLDS_SET(__format) "\n",142 n MAKE_XE_GUC_KLV_THRESHOLDS_SET(__value));143 144#undef __format145#undef __value146 }147}148