1 // SPDX-License-Identifier: GPL-2.0+ 2 /* Copyright (c) 2018-2019 Hisilicon Limited. */ 3 4 #include <linux/debugfs.h> 5 #include <linux/device.h> 6 7 #include "hnae3.h" 8 #include "hns3_enet.h" 9 10 #define HNS3_DBG_READ_LEN 256 11 12 static struct dentry *hns3_dbgfs_root; 13 14 static int hns3_dbg_queue_info(struct hnae3_handle *h, 15 const char *cmd_buf) 16 { 17 struct hns3_nic_priv *priv = h->priv; 18 struct hns3_nic_ring_data *ring_data; 19 struct hns3_enet_ring *ring; 20 u32 base_add_l, base_add_h; 21 u32 queue_num, queue_max; 22 u32 value, i = 0; 23 int cnt; 24 25 if (!priv->ring_data) { 26 dev_err(&h->pdev->dev, "ring_data is NULL\n"); 27 return -EFAULT; 28 } 29 30 queue_max = h->kinfo.num_tqps; 31 cnt = kstrtouint(&cmd_buf[11], 0, &queue_num); 32 if (cnt) 33 queue_num = 0; 34 else 35 queue_max = queue_num + 1; 36 37 dev_info(&h->pdev->dev, "queue info\n"); 38 39 if (queue_num >= h->kinfo.num_tqps) { 40 dev_err(&h->pdev->dev, 41 "Queue number(%u) is out of range(%u)\n", queue_num, 42 h->kinfo.num_tqps - 1); 43 return -EINVAL; 44 } 45 46 ring_data = priv->ring_data; 47 for (i = queue_num; i < queue_max; i++) { 48 /* Each cycle needs to determine whether the instance is reset, 49 * to prevent reference to invalid memory. And need to ensure 50 * that the following code is executed within 100ms. 51 */ 52 if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 53 test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 54 return -EPERM; 55 56 ring = ring_data[(u32)(i + h->kinfo.num_tqps)].ring; 57 base_add_h = readl_relaxed(ring->tqp->io_base + 58 HNS3_RING_RX_RING_BASEADDR_H_REG); 59 base_add_l = readl_relaxed(ring->tqp->io_base + 60 HNS3_RING_RX_RING_BASEADDR_L_REG); 61 dev_info(&h->pdev->dev, "RX(%d) BASE ADD: 0x%08x%08x\n", i, 62 base_add_h, base_add_l); 63 64 value = readl_relaxed(ring->tqp->io_base + 65 HNS3_RING_RX_RING_BD_NUM_REG); 66 dev_info(&h->pdev->dev, "RX(%d) RING BD NUM: %u\n", i, value); 67 68 value = readl_relaxed(ring->tqp->io_base + 69 HNS3_RING_RX_RING_BD_LEN_REG); 70 dev_info(&h->pdev->dev, "RX(%d) RING BD LEN: %u\n", i, value); 71 72 value = readl_relaxed(ring->tqp->io_base + 73 HNS3_RING_RX_RING_TAIL_REG); 74 dev_info(&h->pdev->dev, "RX(%d) RING TAIL: %u\n", i, value); 75 76 value = readl_relaxed(ring->tqp->io_base + 77 HNS3_RING_RX_RING_HEAD_REG); 78 dev_info(&h->pdev->dev, "RX(%d) RING HEAD: %u\n", i, value); 79 80 value = readl_relaxed(ring->tqp->io_base + 81 HNS3_RING_RX_RING_FBDNUM_REG); 82 dev_info(&h->pdev->dev, "RX(%d) RING FBDNUM: %u\n", i, value); 83 84 value = readl_relaxed(ring->tqp->io_base + 85 HNS3_RING_RX_RING_PKTNUM_RECORD_REG); 86 dev_info(&h->pdev->dev, "RX(%d) RING PKTNUM: %u\n", i, value); 87 88 ring = ring_data[i].ring; 89 base_add_h = readl_relaxed(ring->tqp->io_base + 90 HNS3_RING_TX_RING_BASEADDR_H_REG); 91 base_add_l = readl_relaxed(ring->tqp->io_base + 92 HNS3_RING_TX_RING_BASEADDR_L_REG); 93 dev_info(&h->pdev->dev, "TX(%d) BASE ADD: 0x%08x%08x\n", i, 94 base_add_h, base_add_l); 95 96 value = readl_relaxed(ring->tqp->io_base + 97 HNS3_RING_TX_RING_BD_NUM_REG); 98 dev_info(&h->pdev->dev, "TX(%d) RING BD NUM: %u\n", i, value); 99 100 value = readl_relaxed(ring->tqp->io_base + 101 HNS3_RING_TX_RING_TC_REG); 102 dev_info(&h->pdev->dev, "TX(%d) RING TC: %u\n", i, value); 103 104 value = readl_relaxed(ring->tqp->io_base + 105 HNS3_RING_TX_RING_TAIL_REG); 106 dev_info(&h->pdev->dev, "TX(%d) RING TAIL: %u\n", i, value); 107 108 value = readl_relaxed(ring->tqp->io_base + 109 HNS3_RING_TX_RING_HEAD_REG); 110 dev_info(&h->pdev->dev, "TX(%d) RING HEAD: %u\n", i, value); 111 112 value = readl_relaxed(ring->tqp->io_base + 113 HNS3_RING_TX_RING_FBDNUM_REG); 114 dev_info(&h->pdev->dev, "TX(%d) RING FBDNUM: %u\n", i, value); 115 116 value = readl_relaxed(ring->tqp->io_base + 117 HNS3_RING_TX_RING_OFFSET_REG); 118 dev_info(&h->pdev->dev, "TX(%d) RING OFFSET: %u\n", i, value); 119 120 value = readl_relaxed(ring->tqp->io_base + 121 HNS3_RING_TX_RING_PKTNUM_RECORD_REG); 122 dev_info(&h->pdev->dev, "TX(%d) RING PKTNUM: %u\n\n", i, 123 value); 124 } 125 126 return 0; 127 } 128 129 static int hns3_dbg_queue_map(struct hnae3_handle *h) 130 { 131 struct hns3_nic_priv *priv = h->priv; 132 struct hns3_nic_ring_data *ring_data; 133 int i; 134 135 if (!h->ae_algo->ops->get_global_queue_id) 136 return -EOPNOTSUPP; 137 138 dev_info(&h->pdev->dev, "map info for queue id and vector id\n"); 139 dev_info(&h->pdev->dev, 140 "local queue id | global queue id | vector id\n"); 141 for (i = 0; i < h->kinfo.num_tqps; i++) { 142 u16 global_qid; 143 144 global_qid = h->ae_algo->ops->get_global_queue_id(h, i); 145 ring_data = &priv->ring_data[i]; 146 if (!ring_data || !ring_data->ring || 147 !ring_data->ring->tqp_vector) 148 continue; 149 150 dev_info(&h->pdev->dev, 151 " %4d %4d %4d\n", 152 i, global_qid, 153 ring_data->ring->tqp_vector->vector_irq); 154 } 155 156 return 0; 157 } 158 159 static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf) 160 { 161 struct hns3_nic_priv *priv = h->priv; 162 struct hns3_nic_ring_data *ring_data; 163 struct hns3_desc *rx_desc, *tx_desc; 164 struct device *dev = &h->pdev->dev; 165 struct hns3_enet_ring *ring; 166 u32 tx_index, rx_index; 167 u32 q_num, value; 168 int cnt; 169 170 cnt = sscanf(&cmd_buf[8], "%u %u", &q_num, &tx_index); 171 if (cnt == 2) { 172 rx_index = tx_index; 173 } else if (cnt != 1) { 174 dev_err(dev, "bd info: bad command string, cnt=%d\n", cnt); 175 return -EINVAL; 176 } 177 178 if (q_num >= h->kinfo.num_tqps) { 179 dev_err(dev, "Queue number(%u) is out of range(%u)\n", q_num, 180 h->kinfo.num_tqps - 1); 181 return -EINVAL; 182 } 183 184 ring_data = priv->ring_data; 185 ring = ring_data[q_num].ring; 186 value = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_TAIL_REG); 187 tx_index = (cnt == 1) ? value : tx_index; 188 189 if (tx_index >= ring->desc_num) { 190 dev_err(dev, "bd index (%u) is out of range(%u)\n", tx_index, 191 ring->desc_num - 1); 192 return -EINVAL; 193 } 194 195 tx_desc = &ring->desc[tx_index]; 196 dev_info(dev, "TX Queue Num: %u, BD Index: %u\n", q_num, tx_index); 197 dev_info(dev, "(TX) addr: 0x%llx\n", tx_desc->addr); 198 dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.vlan_tag); 199 dev_info(dev, "(TX)send_size: %u\n", tx_desc->tx.send_size); 200 dev_info(dev, "(TX)vlan_tso: %u\n", tx_desc->tx.type_cs_vlan_tso); 201 dev_info(dev, "(TX)l2_len: %u\n", tx_desc->tx.l2_len); 202 dev_info(dev, "(TX)l3_len: %u\n", tx_desc->tx.l3_len); 203 dev_info(dev, "(TX)l4_len: %u\n", tx_desc->tx.l4_len); 204 dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.outer_vlan_tag); 205 dev_info(dev, "(TX)tv: %u\n", tx_desc->tx.tv); 206 dev_info(dev, "(TX)vlan_msec: %u\n", tx_desc->tx.ol_type_vlan_msec); 207 dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len); 208 dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len); 209 dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len); 210 dev_info(dev, "(TX)paylen: %u\n", tx_desc->tx.paylen); 211 dev_info(dev, "(TX)vld_ra_ri: %u\n", tx_desc->tx.bdtp_fe_sc_vld_ra_ri); 212 dev_info(dev, "(TX)mss: %u\n", tx_desc->tx.mss); 213 214 ring = ring_data[q_num + h->kinfo.num_tqps].ring; 215 value = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_TAIL_REG); 216 rx_index = (cnt == 1) ? value : tx_index; 217 rx_desc = &ring->desc[rx_index]; 218 219 dev_info(dev, "RX Queue Num: %u, BD Index: %u\n", q_num, rx_index); 220 dev_info(dev, "(RX)addr: 0x%llx\n", rx_desc->addr); 221 dev_info(dev, "(RX)pkt_len: %u\n", rx_desc->rx.pkt_len); 222 dev_info(dev, "(RX)size: %u\n", rx_desc->rx.size); 223 dev_info(dev, "(RX)rss_hash: %u\n", rx_desc->rx.rss_hash); 224 dev_info(dev, "(RX)fd_id: %u\n", rx_desc->rx.fd_id); 225 dev_info(dev, "(RX)vlan_tag: %u\n", rx_desc->rx.vlan_tag); 226 dev_info(dev, "(RX)o_dm_vlan_id_fb: %u\n", rx_desc->rx.o_dm_vlan_id_fb); 227 dev_info(dev, "(RX)ot_vlan_tag: %u\n", rx_desc->rx.ot_vlan_tag); 228 dev_info(dev, "(RX)bd_base_info: %u\n", rx_desc->rx.bd_base_info); 229 230 return 0; 231 } 232 233 static void hns3_dbg_help(struct hnae3_handle *h) 234 { 235 #define HNS3_DBG_BUF_LEN 256 236 237 char printf_buf[HNS3_DBG_BUF_LEN]; 238 239 dev_info(&h->pdev->dev, "available commands\n"); 240 dev_info(&h->pdev->dev, "queue info [number]\n"); 241 dev_info(&h->pdev->dev, "queue map\n"); 242 dev_info(&h->pdev->dev, "bd info [q_num] <bd index>\n"); 243 244 if (!hns3_is_phys_func(h->pdev)) 245 return; 246 247 dev_info(&h->pdev->dev, "dump fd tcam\n"); 248 dev_info(&h->pdev->dev, "dump tc\n"); 249 dev_info(&h->pdev->dev, "dump tm map [q_num]\n"); 250 dev_info(&h->pdev->dev, "dump tm\n"); 251 dev_info(&h->pdev->dev, "dump qos pause cfg\n"); 252 dev_info(&h->pdev->dev, "dump qos pri map\n"); 253 dev_info(&h->pdev->dev, "dump qos buf cfg\n"); 254 dev_info(&h->pdev->dev, "dump mng tbl\n"); 255 dev_info(&h->pdev->dev, "dump reset info\n"); 256 dev_info(&h->pdev->dev, "dump m7 info\n"); 257 dev_info(&h->pdev->dev, "dump ncl_config <offset> <length>(in hex)\n"); 258 dev_info(&h->pdev->dev, "dump mac tnl status\n"); 259 260 memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 261 strncat(printf_buf, "dump reg [[bios common] [ssu <prt_id>]", 262 HNS3_DBG_BUF_LEN - 1); 263 strncat(printf_buf + strlen(printf_buf), 264 " [igu egu <prt_id>] [rpu <tc_queue_num>]", 265 HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 266 strncat(printf_buf + strlen(printf_buf), 267 " [rtc] [ppp] [rcb] [tqp <q_num>]]\n", 268 HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 269 dev_info(&h->pdev->dev, "%s", printf_buf); 270 271 memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 272 strncat(printf_buf, "dump reg dcb [port_id] [pri_id] [pg_id]", 273 HNS3_DBG_BUF_LEN - 1); 274 strncat(printf_buf + strlen(printf_buf), " [rq_id] [nq_id] [qset_id]\n", 275 HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 276 dev_info(&h->pdev->dev, "%s", printf_buf); 277 } 278 279 static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer, 280 size_t count, loff_t *ppos) 281 { 282 int uncopy_bytes; 283 char *buf; 284 int len; 285 286 if (*ppos != 0) 287 return 0; 288 289 if (count < HNS3_DBG_READ_LEN) 290 return -ENOSPC; 291 292 buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL); 293 if (!buf) 294 return -ENOMEM; 295 296 len = snprintf(buf, HNS3_DBG_READ_LEN, "%s\n", 297 "Please echo help to cmd to get help information"); 298 uncopy_bytes = copy_to_user(buffer, buf, len); 299 300 kfree(buf); 301 302 if (uncopy_bytes) 303 return -EFAULT; 304 305 return (*ppos = len); 306 } 307 308 static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer, 309 size_t count, loff_t *ppos) 310 { 311 struct hnae3_handle *handle = filp->private_data; 312 struct hns3_nic_priv *priv = handle->priv; 313 char *cmd_buf, *cmd_buf_tmp; 314 int uncopied_bytes; 315 int ret = 0; 316 317 if (*ppos != 0) 318 return 0; 319 320 /* Judge if the instance is being reset. */ 321 if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 322 test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 323 return 0; 324 325 cmd_buf = kzalloc(count + 1, GFP_KERNEL); 326 if (!cmd_buf) 327 return count; 328 329 uncopied_bytes = copy_from_user(cmd_buf, buffer, count); 330 if (uncopied_bytes) { 331 kfree(cmd_buf); 332 return -EFAULT; 333 } 334 335 cmd_buf[count] = '\0'; 336 337 cmd_buf_tmp = strchr(cmd_buf, '\n'); 338 if (cmd_buf_tmp) { 339 *cmd_buf_tmp = '\0'; 340 count = cmd_buf_tmp - cmd_buf + 1; 341 } 342 343 if (strncmp(cmd_buf, "help", 4) == 0) 344 hns3_dbg_help(handle); 345 else if (strncmp(cmd_buf, "queue info", 10) == 0) 346 ret = hns3_dbg_queue_info(handle, cmd_buf); 347 else if (strncmp(cmd_buf, "queue map", 9) == 0) 348 ret = hns3_dbg_queue_map(handle); 349 else if (strncmp(cmd_buf, "bd info", 7) == 0) 350 ret = hns3_dbg_bd_info(handle, cmd_buf); 351 else if (handle->ae_algo->ops->dbg_run_cmd) 352 ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf); 353 else 354 ret = -EOPNOTSUPP; 355 356 if (ret) 357 hns3_dbg_help(handle); 358 359 kfree(cmd_buf); 360 cmd_buf = NULL; 361 362 return count; 363 } 364 365 static const struct file_operations hns3_dbg_cmd_fops = { 366 .owner = THIS_MODULE, 367 .open = simple_open, 368 .read = hns3_dbg_cmd_read, 369 .write = hns3_dbg_cmd_write, 370 }; 371 372 void hns3_dbg_init(struct hnae3_handle *handle) 373 { 374 const char *name = pci_name(handle->pdev); 375 struct dentry *pfile; 376 377 handle->hnae3_dbgfs = debugfs_create_dir(name, hns3_dbgfs_root); 378 if (!handle->hnae3_dbgfs) 379 return; 380 381 pfile = debugfs_create_file("cmd", 0600, handle->hnae3_dbgfs, handle, 382 &hns3_dbg_cmd_fops); 383 if (!pfile) { 384 debugfs_remove_recursive(handle->hnae3_dbgfs); 385 handle->hnae3_dbgfs = NULL; 386 dev_warn(&handle->pdev->dev, "create file for %s fail\n", 387 name); 388 } 389 } 390 391 void hns3_dbg_uninit(struct hnae3_handle *handle) 392 { 393 debugfs_remove_recursive(handle->hnae3_dbgfs); 394 handle->hnae3_dbgfs = NULL; 395 } 396 397 void hns3_dbg_register_debugfs(const char *debugfs_dir_name) 398 { 399 hns3_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL); 400 if (!hns3_dbgfs_root) { 401 pr_warn("Register debugfs for %s fail\n", debugfs_dir_name); 402 return; 403 } 404 } 405 406 void hns3_dbg_unregister_debugfs(void) 407 { 408 debugfs_remove_recursive(hns3_dbgfs_root); 409 hns3_dbgfs_root = NULL; 410 } 411