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 #define HNS3_DBG_WRITE_LEN 1024 12 13 static struct dentry *hns3_dbgfs_root; 14 15 static int hns3_dbg_queue_info(struct hnae3_handle *h, 16 const char *cmd_buf) 17 { 18 struct hns3_nic_priv *priv = h->priv; 19 struct hns3_nic_ring_data *ring_data; 20 struct hns3_enet_ring *ring; 21 u32 base_add_l, base_add_h; 22 u32 queue_num, queue_max; 23 u32 value, i = 0; 24 int cnt; 25 26 if (!priv->ring_data) { 27 dev_err(&h->pdev->dev, "ring_data is NULL\n"); 28 return -EFAULT; 29 } 30 31 queue_max = h->kinfo.num_tqps; 32 cnt = kstrtouint(&cmd_buf[11], 0, &queue_num); 33 if (cnt) 34 queue_num = 0; 35 else 36 queue_max = queue_num + 1; 37 38 dev_info(&h->pdev->dev, "queue info\n"); 39 40 if (queue_num >= h->kinfo.num_tqps) { 41 dev_err(&h->pdev->dev, 42 "Queue number(%u) is out of range(0-%u)\n", queue_num, 43 h->kinfo.num_tqps - 1); 44 return -EINVAL; 45 } 46 47 ring_data = priv->ring_data; 48 for (i = queue_num; i < queue_max; i++) { 49 /* Each cycle needs to determine whether the instance is reset, 50 * to prevent reference to invalid memory. And need to ensure 51 * that the following code is executed within 100ms. 52 */ 53 if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 54 test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 55 return -EPERM; 56 57 ring = ring_data[(u32)(i + h->kinfo.num_tqps)].ring; 58 base_add_h = readl_relaxed(ring->tqp->io_base + 59 HNS3_RING_RX_RING_BASEADDR_H_REG); 60 base_add_l = readl_relaxed(ring->tqp->io_base + 61 HNS3_RING_RX_RING_BASEADDR_L_REG); 62 dev_info(&h->pdev->dev, "RX(%d) BASE ADD: 0x%08x%08x\n", i, 63 base_add_h, base_add_l); 64 65 value = readl_relaxed(ring->tqp->io_base + 66 HNS3_RING_RX_RING_BD_NUM_REG); 67 dev_info(&h->pdev->dev, "RX(%d) RING BD NUM: %u\n", i, value); 68 69 value = readl_relaxed(ring->tqp->io_base + 70 HNS3_RING_RX_RING_BD_LEN_REG); 71 dev_info(&h->pdev->dev, "RX(%d) RING BD LEN: %u\n", i, value); 72 73 value = readl_relaxed(ring->tqp->io_base + 74 HNS3_RING_RX_RING_TAIL_REG); 75 dev_info(&h->pdev->dev, "RX(%d) RING TAIL: %u\n", i, value); 76 77 value = readl_relaxed(ring->tqp->io_base + 78 HNS3_RING_RX_RING_HEAD_REG); 79 dev_info(&h->pdev->dev, "RX(%d) RING HEAD: %u\n", i, value); 80 81 value = readl_relaxed(ring->tqp->io_base + 82 HNS3_RING_RX_RING_FBDNUM_REG); 83 dev_info(&h->pdev->dev, "RX(%d) RING FBDNUM: %u\n", i, value); 84 85 value = readl_relaxed(ring->tqp->io_base + 86 HNS3_RING_RX_RING_PKTNUM_RECORD_REG); 87 dev_info(&h->pdev->dev, "RX(%d) RING PKTNUM: %u\n", i, value); 88 89 ring = ring_data[i].ring; 90 base_add_h = readl_relaxed(ring->tqp->io_base + 91 HNS3_RING_TX_RING_BASEADDR_H_REG); 92 base_add_l = readl_relaxed(ring->tqp->io_base + 93 HNS3_RING_TX_RING_BASEADDR_L_REG); 94 dev_info(&h->pdev->dev, "TX(%d) BASE ADD: 0x%08x%08x\n", i, 95 base_add_h, base_add_l); 96 97 value = readl_relaxed(ring->tqp->io_base + 98 HNS3_RING_TX_RING_BD_NUM_REG); 99 dev_info(&h->pdev->dev, "TX(%d) RING BD NUM: %u\n", i, value); 100 101 value = readl_relaxed(ring->tqp->io_base + 102 HNS3_RING_TX_RING_TC_REG); 103 dev_info(&h->pdev->dev, "TX(%d) RING TC: %u\n", i, value); 104 105 value = readl_relaxed(ring->tqp->io_base + 106 HNS3_RING_TX_RING_TAIL_REG); 107 dev_info(&h->pdev->dev, "TX(%d) RING TAIL: %u\n", i, value); 108 109 value = readl_relaxed(ring->tqp->io_base + 110 HNS3_RING_TX_RING_HEAD_REG); 111 dev_info(&h->pdev->dev, "TX(%d) RING HEAD: %u\n", i, value); 112 113 value = readl_relaxed(ring->tqp->io_base + 114 HNS3_RING_TX_RING_FBDNUM_REG); 115 dev_info(&h->pdev->dev, "TX(%d) RING FBDNUM: %u\n", i, value); 116 117 value = readl_relaxed(ring->tqp->io_base + 118 HNS3_RING_TX_RING_OFFSET_REG); 119 dev_info(&h->pdev->dev, "TX(%d) RING OFFSET: %u\n", i, value); 120 121 value = readl_relaxed(ring->tqp->io_base + 122 HNS3_RING_TX_RING_PKTNUM_RECORD_REG); 123 dev_info(&h->pdev->dev, "TX(%d) RING PKTNUM: %u\n\n", i, 124 value); 125 } 126 127 return 0; 128 } 129 130 static int hns3_dbg_queue_map(struct hnae3_handle *h) 131 { 132 struct hns3_nic_priv *priv = h->priv; 133 struct hns3_nic_ring_data *ring_data; 134 int i; 135 136 if (!h->ae_algo->ops->get_global_queue_id) 137 return -EOPNOTSUPP; 138 139 dev_info(&h->pdev->dev, "map info for queue id and vector id\n"); 140 dev_info(&h->pdev->dev, 141 "local queue id | global queue id | vector id\n"); 142 for (i = 0; i < h->kinfo.num_tqps; i++) { 143 u16 global_qid; 144 145 global_qid = h->ae_algo->ops->get_global_queue_id(h, i); 146 ring_data = &priv->ring_data[i]; 147 if (!ring_data || !ring_data->ring || 148 !ring_data->ring->tqp_vector) 149 continue; 150 151 dev_info(&h->pdev->dev, 152 " %4d %4d %4d\n", 153 i, global_qid, 154 ring_data->ring->tqp_vector->vector_irq); 155 } 156 157 return 0; 158 } 159 160 static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf) 161 { 162 struct hns3_nic_priv *priv = h->priv; 163 struct hns3_nic_ring_data *ring_data; 164 struct hns3_desc *rx_desc, *tx_desc; 165 struct device *dev = &h->pdev->dev; 166 struct hns3_enet_ring *ring; 167 u32 tx_index, rx_index; 168 u32 q_num, value; 169 int cnt; 170 171 cnt = sscanf(&cmd_buf[8], "%u %u", &q_num, &tx_index); 172 if (cnt == 2) { 173 rx_index = tx_index; 174 } else if (cnt != 1) { 175 dev_err(dev, "bd info: bad command string, cnt=%d\n", cnt); 176 return -EINVAL; 177 } 178 179 if (q_num >= h->kinfo.num_tqps) { 180 dev_err(dev, "Queue number(%u) is out of range(0-%u)\n", q_num, 181 h->kinfo.num_tqps - 1); 182 return -EINVAL; 183 } 184 185 ring_data = priv->ring_data; 186 ring = ring_data[q_num].ring; 187 value = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_TAIL_REG); 188 tx_index = (cnt == 1) ? value : tx_index; 189 190 if (tx_index >= ring->desc_num) { 191 dev_err(dev, "bd index(%u) is out of range(0-%u)\n", tx_index, 192 ring->desc_num - 1); 193 return -EINVAL; 194 } 195 196 tx_desc = &ring->desc[tx_index]; 197 dev_info(dev, "TX Queue Num: %u, BD Index: %u\n", q_num, tx_index); 198 dev_info(dev, "(TX)addr: 0x%llx\n", tx_desc->addr); 199 dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.vlan_tag); 200 dev_info(dev, "(TX)send_size: %u\n", tx_desc->tx.send_size); 201 dev_info(dev, "(TX)vlan_tso: %u\n", tx_desc->tx.type_cs_vlan_tso); 202 dev_info(dev, "(TX)l2_len: %u\n", tx_desc->tx.l2_len); 203 dev_info(dev, "(TX)l3_len: %u\n", tx_desc->tx.l3_len); 204 dev_info(dev, "(TX)l4_len: %u\n", tx_desc->tx.l4_len); 205 dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.outer_vlan_tag); 206 dev_info(dev, "(TX)tv: %u\n", tx_desc->tx.tv); 207 dev_info(dev, "(TX)vlan_msec: %u\n", tx_desc->tx.ol_type_vlan_msec); 208 dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len); 209 dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len); 210 dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len); 211 dev_info(dev, "(TX)paylen: %u\n", tx_desc->tx.paylen); 212 dev_info(dev, "(TX)vld_ra_ri: %u\n", tx_desc->tx.bdtp_fe_sc_vld_ra_ri); 213 dev_info(dev, "(TX)mss: %u\n", tx_desc->tx.mss); 214 215 ring = ring_data[q_num + h->kinfo.num_tqps].ring; 216 value = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_TAIL_REG); 217 rx_index = (cnt == 1) ? value : tx_index; 218 rx_desc = &ring->desc[rx_index]; 219 220 dev_info(dev, "RX Queue Num: %u, BD Index: %u\n", q_num, rx_index); 221 dev_info(dev, "(RX)addr: 0x%llx\n", rx_desc->addr); 222 dev_info(dev, "(RX)l234_info: %u\n", rx_desc->rx.l234_info); 223 dev_info(dev, "(RX)pkt_len: %u\n", rx_desc->rx.pkt_len); 224 dev_info(dev, "(RX)size: %u\n", rx_desc->rx.size); 225 dev_info(dev, "(RX)rss_hash: %u\n", rx_desc->rx.rss_hash); 226 dev_info(dev, "(RX)fd_id: %u\n", rx_desc->rx.fd_id); 227 dev_info(dev, "(RX)vlan_tag: %u\n", rx_desc->rx.vlan_tag); 228 dev_info(dev, "(RX)o_dm_vlan_id_fb: %u\n", rx_desc->rx.o_dm_vlan_id_fb); 229 dev_info(dev, "(RX)ot_vlan_tag: %u\n", rx_desc->rx.ot_vlan_tag); 230 dev_info(dev, "(RX)bd_base_info: %u\n", rx_desc->rx.bd_base_info); 231 232 return 0; 233 } 234 235 static void hns3_dbg_help(struct hnae3_handle *h) 236 { 237 #define HNS3_DBG_BUF_LEN 256 238 239 char printf_buf[HNS3_DBG_BUF_LEN]; 240 241 dev_info(&h->pdev->dev, "available commands\n"); 242 dev_info(&h->pdev->dev, "queue info <number>\n"); 243 dev_info(&h->pdev->dev, "queue map\n"); 244 dev_info(&h->pdev->dev, "bd info <q_num> <bd index>\n"); 245 246 if (!hns3_is_phys_func(h->pdev)) 247 return; 248 249 dev_info(&h->pdev->dev, "dump fd tcam\n"); 250 dev_info(&h->pdev->dev, "dump tc\n"); 251 dev_info(&h->pdev->dev, "dump tm map <q_num>\n"); 252 dev_info(&h->pdev->dev, "dump tm\n"); 253 dev_info(&h->pdev->dev, "dump qos pause cfg\n"); 254 dev_info(&h->pdev->dev, "dump qos pri map\n"); 255 dev_info(&h->pdev->dev, "dump qos buf cfg\n"); 256 dev_info(&h->pdev->dev, "dump mng tbl\n"); 257 dev_info(&h->pdev->dev, "dump reset info\n"); 258 dev_info(&h->pdev->dev, "dump m7 info\n"); 259 dev_info(&h->pdev->dev, "dump ncl_config <offset> <length>(in hex)\n"); 260 dev_info(&h->pdev->dev, "dump mac tnl status\n"); 261 262 memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 263 strncat(printf_buf, "dump reg [[bios common] [ssu <port_id>]", 264 HNS3_DBG_BUF_LEN - 1); 265 strncat(printf_buf + strlen(printf_buf), 266 " [igu egu <port_id>] [rpu <tc_queue_num>]", 267 HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 268 strncat(printf_buf + strlen(printf_buf), 269 " [rtc] [ppp] [rcb] [tqp <queue_num>]]\n", 270 HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 271 dev_info(&h->pdev->dev, "%s", printf_buf); 272 273 memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 274 strncat(printf_buf, "dump reg dcb <port_id> <pri_id> <pg_id>", 275 HNS3_DBG_BUF_LEN - 1); 276 strncat(printf_buf + strlen(printf_buf), " <rq_id> <nq_id> <qset_id>\n", 277 HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 278 dev_info(&h->pdev->dev, "%s", printf_buf); 279 } 280 281 static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer, 282 size_t count, loff_t *ppos) 283 { 284 int uncopy_bytes; 285 char *buf; 286 int len; 287 288 if (*ppos != 0) 289 return 0; 290 291 if (count < HNS3_DBG_READ_LEN) 292 return -ENOSPC; 293 294 buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL); 295 if (!buf) 296 return -ENOMEM; 297 298 len = snprintf(buf, HNS3_DBG_READ_LEN, "%s\n", 299 "Please echo help to cmd to get help information"); 300 uncopy_bytes = copy_to_user(buffer, buf, len); 301 302 kfree(buf); 303 304 if (uncopy_bytes) 305 return -EFAULT; 306 307 return (*ppos = len); 308 } 309 310 static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer, 311 size_t count, loff_t *ppos) 312 { 313 struct hnae3_handle *handle = filp->private_data; 314 struct hns3_nic_priv *priv = handle->priv; 315 char *cmd_buf, *cmd_buf_tmp; 316 int uncopied_bytes; 317 int ret = 0; 318 319 if (*ppos != 0) 320 return 0; 321 322 /* Judge if the instance is being reset. */ 323 if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 324 test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 325 return 0; 326 327 if (count > HNS3_DBG_WRITE_LEN) 328 return -ENOSPC; 329 330 cmd_buf = kzalloc(count + 1, GFP_KERNEL); 331 if (!cmd_buf) 332 return count; 333 334 uncopied_bytes = copy_from_user(cmd_buf, buffer, count); 335 if (uncopied_bytes) { 336 kfree(cmd_buf); 337 return -EFAULT; 338 } 339 340 cmd_buf[count] = '\0'; 341 342 cmd_buf_tmp = strchr(cmd_buf, '\n'); 343 if (cmd_buf_tmp) { 344 *cmd_buf_tmp = '\0'; 345 count = cmd_buf_tmp - cmd_buf + 1; 346 } 347 348 if (strncmp(cmd_buf, "help", 4) == 0) 349 hns3_dbg_help(handle); 350 else if (strncmp(cmd_buf, "queue info", 10) == 0) 351 ret = hns3_dbg_queue_info(handle, cmd_buf); 352 else if (strncmp(cmd_buf, "queue map", 9) == 0) 353 ret = hns3_dbg_queue_map(handle); 354 else if (strncmp(cmd_buf, "bd info", 7) == 0) 355 ret = hns3_dbg_bd_info(handle, cmd_buf); 356 else if (handle->ae_algo->ops->dbg_run_cmd) 357 ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf); 358 else 359 ret = -EOPNOTSUPP; 360 361 if (ret) 362 hns3_dbg_help(handle); 363 364 kfree(cmd_buf); 365 cmd_buf = NULL; 366 367 return count; 368 } 369 370 static const struct file_operations hns3_dbg_cmd_fops = { 371 .owner = THIS_MODULE, 372 .open = simple_open, 373 .read = hns3_dbg_cmd_read, 374 .write = hns3_dbg_cmd_write, 375 }; 376 377 void hns3_dbg_init(struct hnae3_handle *handle) 378 { 379 const char *name = pci_name(handle->pdev); 380 381 handle->hnae3_dbgfs = debugfs_create_dir(name, hns3_dbgfs_root); 382 383 debugfs_create_file("cmd", 0600, handle->hnae3_dbgfs, handle, 384 &hns3_dbg_cmd_fops); 385 } 386 387 void hns3_dbg_uninit(struct hnae3_handle *handle) 388 { 389 debugfs_remove_recursive(handle->hnae3_dbgfs); 390 handle->hnae3_dbgfs = NULL; 391 } 392 393 void hns3_dbg_register_debugfs(const char *debugfs_dir_name) 394 { 395 hns3_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL); 396 } 397 398 void hns3_dbg_unregister_debugfs(void) 399 { 400 debugfs_remove_recursive(hns3_dbgfs_root); 401 hns3_dbgfs_root = NULL; 402 } 403