drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c

   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         dev_info(&h->pdev->dev, "dump fd tcam\n");
 243         dev_info(&h->pdev->dev, "dump tc\n");
 244         dev_info(&h->pdev->dev, "dump tm map [q_num]\n");
 245         dev_info(&h->pdev->dev, "dump tm\n");
 246         dev_info(&h->pdev->dev, "dump qos pause cfg\n");
 247         dev_info(&h->pdev->dev, "dump qos pri map\n");
 248         dev_info(&h->pdev->dev, "dump qos buf cfg\n");
 249         dev_info(&h->pdev->dev, "dump mng tbl\n");
 250
 251         memset(printf_buf, 0, HNS3_DBG_BUF_LEN);
 252         strncat(printf_buf, "dump reg [[bios common] [ssu <prt_id>]",
 253                 HNS3_DBG_BUF_LEN - 1);
 254         strncat(printf_buf + strlen(printf_buf),
 255                 " [igu egu <prt_id>] [rpu <tc_queue_num>]",
 256                 HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1);
 257         strncat(printf_buf + strlen(printf_buf),
 258                 " [rtc] [ppp] [rcb] [tqp <q_num>]]\n",
 259                 HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1);
 260         dev_info(&h->pdev->dev, "%s", printf_buf);
 261
 262         memset(printf_buf, 0, HNS3_DBG_BUF_LEN);
 263         strncat(printf_buf, "dump reg dcb [port_id] [pri_id] [pg_id]",
 264                 HNS3_DBG_BUF_LEN - 1);
 265         strncat(printf_buf + strlen(printf_buf), " [rq_id] [nq_id] [qset_id]\n",
 266                 HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1);
 267         dev_info(&h->pdev->dev, "%s", printf_buf);
 268 }
 269
 270 static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer,
 271                                  size_t count, loff_t *ppos)
 272 {
 273         int uncopy_bytes;
 274         char *buf;
 275         int len;
 276
 277         if (*ppos != 0)
 278                 return 0;
 279
 280         if (count < HNS3_DBG_READ_LEN)
 281                 return -ENOSPC;
 282
 283         buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL);
 284         if (!buf)
 285                 return -ENOMEM;
 286
 287         len = snprintf(buf, HNS3_DBG_READ_LEN, "%s\n",
 288                        "Please echo help to cmd to get help information");
 289         uncopy_bytes = copy_to_user(buffer, buf, len);
 290
 291         kfree(buf);
 292
 293         if (uncopy_bytes)
 294                 return -EFAULT;
 295
 296         return (*ppos = len);
 297 }
 298
 299 static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer,
 300                                   size_t count, loff_t *ppos)
 301 {
 302         struct hnae3_handle *handle = filp->private_data;
 303         struct hns3_nic_priv *priv  = handle->priv;
 304         char *cmd_buf, *cmd_buf_tmp;
 305         int uncopied_bytes;
 306         int ret = 0;
 307
 308         if (*ppos != 0)
 309                 return 0;
 310
 311         /* Judge if the instance is being reset. */
 312         if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||
 313             test_bit(HNS3_NIC_STATE_RESETTING, &priv->state))
 314                 return 0;
 315
 316         cmd_buf = kzalloc(count + 1, GFP_KERNEL);
 317         if (!cmd_buf)
 318                 return count;
 319
 320         uncopied_bytes = copy_from_user(cmd_buf, buffer, count);
 321         if (uncopied_bytes) {
 322                 kfree(cmd_buf);
 323                 return -EFAULT;
 324         }
 325
 326         cmd_buf[count] = '\0';
 327
 328         cmd_buf_tmp = strchr(cmd_buf, '\n');
 329         if (cmd_buf_tmp) {
 330                 *cmd_buf_tmp = '\0';
 331                 count = cmd_buf_tmp - cmd_buf + 1;
 332         }
 333
 334         if (strncmp(cmd_buf, "help", 4) == 0)
 335                 hns3_dbg_help(handle);
 336         else if (strncmp(cmd_buf, "queue info", 10) == 0)
 337                 ret = hns3_dbg_queue_info(handle, cmd_buf);
 338         else if (strncmp(cmd_buf, "queue map", 9) == 0)
 339                 ret = hns3_dbg_queue_map(handle);
 340         else if (strncmp(cmd_buf, "bd info", 7) == 0)
 341                 ret = hns3_dbg_bd_info(handle, cmd_buf);
 342         else if (handle->ae_algo->ops->dbg_run_cmd)
 343                 ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf);
 344
 345         if (ret)
 346                 hns3_dbg_help(handle);
 347
 348         kfree(cmd_buf);
 349         cmd_buf = NULL;
 350
 351         return count;
 352 }
 353
 354 static const struct file_operations hns3_dbg_cmd_fops = {
 355         .owner = THIS_MODULE,
 356         .open  = simple_open,
 357         .read  = hns3_dbg_cmd_read,
 358         .write = hns3_dbg_cmd_write,
 359 };
 360
 361 void hns3_dbg_init(struct hnae3_handle *handle)
 362 {
 363         const char *name = pci_name(handle->pdev);
 364         struct dentry *pfile;
 365
 366         handle->hnae3_dbgfs = debugfs_create_dir(name, hns3_dbgfs_root);
 367         if (!handle->hnae3_dbgfs)
 368                 return;
 369
 370         pfile = debugfs_create_file("cmd", 0600, handle->hnae3_dbgfs, handle,
 371                                     &hns3_dbg_cmd_fops);
 372         if (!pfile) {
 373                 debugfs_remove_recursive(handle->hnae3_dbgfs);
 374                 handle->hnae3_dbgfs = NULL;
 375                 dev_warn(&handle->pdev->dev, "create file for %s fail\n",
 376                          name);
 377         }
 378 }
 379
 380 void hns3_dbg_uninit(struct hnae3_handle *handle)
 381 {
 382         debugfs_remove_recursive(handle->hnae3_dbgfs);
 383         handle->hnae3_dbgfs = NULL;
 384 }
 385
 386 void hns3_dbg_register_debugfs(const char *debugfs_dir_name)
 387 {
 388         hns3_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL);
 389         if (!hns3_dbgfs_root) {
 390                 pr_warn("Register debugfs for %s fail\n", debugfs_dir_name);
 391                 return;
 392         }
 393 }
 394
 395 void hns3_dbg_unregister_debugfs(void)
 396 {
 397         debugfs_remove_recursive(hns3_dbgfs_root);
 398         hns3_dbgfs_root = NULL;
 399 }