1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* Marvell/Qlogic FastLinQ NIC driver 3 * 4 * Copyright (C) 2020 Marvell International Ltd. 5 */ 6 7 #include <linux/kernel.h> 8 #include <linux/qed/qed_if.h> 9 #include <linux/vmalloc.h> 10 #include "qed.h" 11 #include "qed_devlink.h" 12 13 enum qed_devlink_param_id { 14 QED_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX, 15 QED_DEVLINK_PARAM_ID_IWARP_CMT, 16 }; 17 18 struct qed_fw_fatal_ctx { 19 enum qed_hw_err_type err_type; 20 }; 21 22 int qed_report_fatal_error(struct devlink *devlink, enum qed_hw_err_type err_type) 23 { 24 struct qed_devlink *qdl = devlink_priv(devlink); 25 struct qed_fw_fatal_ctx fw_fatal_ctx = { 26 .err_type = err_type, 27 }; 28 29 if (qdl->fw_reporter) 30 devlink_health_report(qdl->fw_reporter, 31 "Fatal error occurred", &fw_fatal_ctx); 32 33 return 0; 34 } 35 36 static int 37 qed_fw_fatal_reporter_dump(struct devlink_health_reporter *reporter, 38 struct devlink_fmsg *fmsg, void *priv_ctx, 39 struct netlink_ext_ack *extack) 40 { 41 struct qed_devlink *qdl = devlink_health_reporter_priv(reporter); 42 struct qed_fw_fatal_ctx *fw_fatal_ctx = priv_ctx; 43 struct qed_dev *cdev = qdl->cdev; 44 u32 dbg_data_buf_size; 45 u8 *p_dbg_data_buf; 46 int err; 47 48 /* Having context means that was a dump request after fatal, 49 * so we enable extra debugging while gathering the dump, 50 * just in case 51 */ 52 cdev->print_dbg_data = fw_fatal_ctx ? true : false; 53 54 dbg_data_buf_size = qed_dbg_all_data_size(cdev); 55 p_dbg_data_buf = vzalloc(dbg_data_buf_size); 56 if (!p_dbg_data_buf) { 57 DP_NOTICE(cdev, 58 "Failed to allocate memory for a debug data buffer\n"); 59 return -ENOMEM; 60 } 61 62 err = qed_dbg_all_data(cdev, p_dbg_data_buf); 63 if (err) { 64 DP_NOTICE(cdev, "Failed to obtain debug data\n"); 65 vfree(p_dbg_data_buf); 66 return err; 67 } 68 69 devlink_fmsg_binary_pair_put(fmsg, "dump_data", p_dbg_data_buf, 70 dbg_data_buf_size); 71 72 vfree(p_dbg_data_buf); 73 74 return 0; 75 } 76 77 static int 78 qed_fw_fatal_reporter_recover(struct devlink_health_reporter *reporter, 79 void *priv_ctx, 80 struct netlink_ext_ack *extack) 81 { 82 struct qed_devlink *qdl = devlink_health_reporter_priv(reporter); 83 struct qed_dev *cdev = qdl->cdev; 84 85 qed_recovery_process(cdev); 86 87 return 0; 88 } 89 90 #define QED_REPORTER_FW_GRACEFUL_PERIOD 0 91 92 static const struct devlink_health_reporter_ops qed_fw_fatal_reporter_ops = { 93 .name = "fw_fatal", 94 .recover = qed_fw_fatal_reporter_recover, 95 .dump = qed_fw_fatal_reporter_dump, 96 .default_graceful_period = QED_REPORTER_FW_GRACEFUL_PERIOD, 97 }; 98 99 void qed_fw_reporters_create(struct devlink *devlink) 100 { 101 struct qed_devlink *dl = devlink_priv(devlink); 102 103 dl->fw_reporter = devlink_health_reporter_create(devlink, 104 &qed_fw_fatal_reporter_ops, dl); 105 if (IS_ERR(dl->fw_reporter)) { 106 DP_NOTICE(dl->cdev, "Failed to create fw reporter, err = %ld\n", 107 PTR_ERR(dl->fw_reporter)); 108 dl->fw_reporter = NULL; 109 } 110 } 111 112 void qed_fw_reporters_destroy(struct devlink *devlink) 113 { 114 struct qed_devlink *dl = devlink_priv(devlink); 115 struct devlink_health_reporter *rep; 116 117 rep = dl->fw_reporter; 118 119 if (!IS_ERR_OR_NULL(rep)) 120 devlink_health_reporter_destroy(rep); 121 } 122 123 static int qed_dl_param_get(struct devlink *dl, u32 id, 124 struct devlink_param_gset_ctx *ctx) 125 { 126 struct qed_devlink *qed_dl = devlink_priv(dl); 127 struct qed_dev *cdev; 128 129 cdev = qed_dl->cdev; 130 ctx->val.vbool = cdev->iwarp_cmt; 131 132 return 0; 133 } 134 135 static int qed_dl_param_set(struct devlink *dl, u32 id, 136 struct devlink_param_gset_ctx *ctx, 137 struct netlink_ext_ack *extack) 138 { 139 struct qed_devlink *qed_dl = devlink_priv(dl); 140 struct qed_dev *cdev; 141 142 cdev = qed_dl->cdev; 143 cdev->iwarp_cmt = ctx->val.vbool; 144 145 return 0; 146 } 147 148 static const struct devlink_param qed_devlink_params[] = { 149 DEVLINK_PARAM_DRIVER(QED_DEVLINK_PARAM_ID_IWARP_CMT, 150 "iwarp_cmt", DEVLINK_PARAM_TYPE_BOOL, 151 BIT(DEVLINK_PARAM_CMODE_RUNTIME), 152 qed_dl_param_get, qed_dl_param_set, NULL), 153 }; 154 155 static int qed_devlink_info_get(struct devlink *devlink, 156 struct devlink_info_req *req, 157 struct netlink_ext_ack *extack) 158 { 159 struct qed_devlink *qed_dl = devlink_priv(devlink); 160 struct qed_dev *cdev = qed_dl->cdev; 161 struct qed_dev_info *dev_info; 162 char buf[100]; 163 int err; 164 165 dev_info = &cdev->common_dev_info; 166 167 memcpy(buf, cdev->hwfns[0].hw_info.part_num, sizeof(cdev->hwfns[0].hw_info.part_num)); 168 buf[sizeof(cdev->hwfns[0].hw_info.part_num)] = 0; 169 170 if (buf[0]) { 171 err = devlink_info_board_serial_number_put(req, buf); 172 if (err) 173 return err; 174 } 175 176 snprintf(buf, sizeof(buf), "%d.%d.%d.%d", 177 GET_MFW_FIELD(dev_info->mfw_rev, QED_MFW_VERSION_3), 178 GET_MFW_FIELD(dev_info->mfw_rev, QED_MFW_VERSION_2), 179 GET_MFW_FIELD(dev_info->mfw_rev, QED_MFW_VERSION_1), 180 GET_MFW_FIELD(dev_info->mfw_rev, QED_MFW_VERSION_0)); 181 182 err = devlink_info_version_stored_put(req, 183 DEVLINK_INFO_VERSION_GENERIC_FW_MGMT, buf); 184 if (err) 185 return err; 186 187 snprintf(buf, sizeof(buf), "%d.%d.%d.%d", 188 dev_info->fw_major, 189 dev_info->fw_minor, 190 dev_info->fw_rev, 191 dev_info->fw_eng); 192 193 return devlink_info_version_running_put(req, 194 DEVLINK_INFO_VERSION_GENERIC_FW_APP, buf); 195 } 196 197 static const struct devlink_ops qed_dl_ops = { 198 .info_get = qed_devlink_info_get, 199 }; 200 201 struct devlink *qed_devlink_register(struct qed_dev *cdev) 202 { 203 struct qed_devlink *qdevlink; 204 struct devlink *dl; 205 int rc; 206 207 dl = devlink_alloc(&qed_dl_ops, sizeof(struct qed_devlink), 208 &cdev->pdev->dev); 209 if (!dl) 210 return ERR_PTR(-ENOMEM); 211 212 qdevlink = devlink_priv(dl); 213 qdevlink->cdev = cdev; 214 215 rc = devlink_params_register(dl, qed_devlink_params, 216 ARRAY_SIZE(qed_devlink_params)); 217 if (rc) 218 goto err_unregister; 219 220 cdev->iwarp_cmt = false; 221 222 qed_fw_reporters_create(dl); 223 devlink_register(dl); 224 return dl; 225 226 err_unregister: 227 devlink_free(dl); 228 229 return ERR_PTR(rc); 230 } 231 232 void qed_devlink_unregister(struct devlink *devlink) 233 { 234 if (!devlink) 235 return; 236 237 devlink_unregister(devlink); 238 qed_fw_reporters_destroy(devlink); 239 240 devlink_params_unregister(devlink, qed_devlink_params, 241 ARRAY_SIZE(qed_devlink_params)); 242 243 devlink_free(devlink); 244 } 245