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