1b2292360Sliuzhongzhu // SPDX-License-Identifier: GPL-2.0+ 2b2292360Sliuzhongzhu /* Copyright (c) 2018-2019 Hisilicon Limited. */ 3b2292360Sliuzhongzhu 4b2292360Sliuzhongzhu #include <linux/debugfs.h> 5b2292360Sliuzhongzhu #include <linux/device.h> 6b2292360Sliuzhongzhu 7b2292360Sliuzhongzhu #include "hnae3.h" 8b2292360Sliuzhongzhu #include "hns3_enet.h" 9b2292360Sliuzhongzhu 10b2292360Sliuzhongzhu #define HNS3_DBG_READ_LEN 256 11b2292360Sliuzhongzhu 12b2292360Sliuzhongzhu static struct dentry *hns3_dbgfs_root; 13b2292360Sliuzhongzhu 1457ceee2cSliuzhongzhu static int hns3_dbg_queue_info(struct hnae3_handle *h, char *cmd_buf) 1557ceee2cSliuzhongzhu { 1657ceee2cSliuzhongzhu struct hns3_nic_priv *priv = h->priv; 1757ceee2cSliuzhongzhu struct hns3_nic_ring_data *ring_data; 1857ceee2cSliuzhongzhu struct hns3_enet_ring *ring; 1957ceee2cSliuzhongzhu u32 base_add_l, base_add_h; 2057ceee2cSliuzhongzhu u32 queue_num, queue_max; 2157ceee2cSliuzhongzhu u32 value, i = 0; 2257ceee2cSliuzhongzhu int cnt; 2357ceee2cSliuzhongzhu 2457ceee2cSliuzhongzhu if (!priv->ring_data) { 2557ceee2cSliuzhongzhu dev_err(&h->pdev->dev, "ring_data is NULL\n"); 2657ceee2cSliuzhongzhu return -EFAULT; 2757ceee2cSliuzhongzhu } 2857ceee2cSliuzhongzhu 2957ceee2cSliuzhongzhu queue_max = h->kinfo.num_tqps; 3057ceee2cSliuzhongzhu cnt = kstrtouint(&cmd_buf[11], 0, &queue_num); 3157ceee2cSliuzhongzhu if (cnt) 3257ceee2cSliuzhongzhu queue_num = 0; 3357ceee2cSliuzhongzhu else 3457ceee2cSliuzhongzhu queue_max = queue_num + 1; 3557ceee2cSliuzhongzhu 3657ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "queue info\n"); 3757ceee2cSliuzhongzhu 3857ceee2cSliuzhongzhu if (queue_num >= h->kinfo.num_tqps) { 3957ceee2cSliuzhongzhu dev_err(&h->pdev->dev, 4057ceee2cSliuzhongzhu "Queue number(%u) is out of range(%u)\n", queue_num, 4157ceee2cSliuzhongzhu h->kinfo.num_tqps - 1); 4257ceee2cSliuzhongzhu return -EINVAL; 4357ceee2cSliuzhongzhu } 4457ceee2cSliuzhongzhu 4557ceee2cSliuzhongzhu ring_data = priv->ring_data; 4657ceee2cSliuzhongzhu for (i = queue_num; i < queue_max; i++) { 4757ceee2cSliuzhongzhu /* Each cycle needs to determine whether the instance is reset, 4857ceee2cSliuzhongzhu * to prevent reference to invalid memory. And need to ensure 4957ceee2cSliuzhongzhu * that the following code is executed within 100ms. 5057ceee2cSliuzhongzhu */ 517737f1fbSliuzhongzhu if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 5257ceee2cSliuzhongzhu test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 5357ceee2cSliuzhongzhu return -EPERM; 5457ceee2cSliuzhongzhu 55122bedc5Sliuzhongzhu ring = ring_data[(u32)(i + h->kinfo.num_tqps)].ring; 5657ceee2cSliuzhongzhu base_add_h = readl_relaxed(ring->tqp->io_base + 5757ceee2cSliuzhongzhu HNS3_RING_RX_RING_BASEADDR_H_REG); 5857ceee2cSliuzhongzhu base_add_l = readl_relaxed(ring->tqp->io_base + 5957ceee2cSliuzhongzhu HNS3_RING_RX_RING_BASEADDR_L_REG); 6057ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) BASE ADD: 0x%08x%08x\n", i, 6157ceee2cSliuzhongzhu base_add_h, base_add_l); 6257ceee2cSliuzhongzhu 6357ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 6457ceee2cSliuzhongzhu HNS3_RING_RX_RING_BD_NUM_REG); 6557ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING BD NUM: %u\n", i, value); 6657ceee2cSliuzhongzhu 6757ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 6857ceee2cSliuzhongzhu HNS3_RING_RX_RING_BD_LEN_REG); 6957ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING BD LEN: %u\n", i, value); 7057ceee2cSliuzhongzhu 7157ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 7257ceee2cSliuzhongzhu HNS3_RING_RX_RING_TAIL_REG); 7357ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING TAIL: %u\n", i, value); 7457ceee2cSliuzhongzhu 7557ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 7657ceee2cSliuzhongzhu HNS3_RING_RX_RING_HEAD_REG); 7757ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING HEAD: %u\n", i, value); 7857ceee2cSliuzhongzhu 7957ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 8057ceee2cSliuzhongzhu HNS3_RING_RX_RING_FBDNUM_REG); 8157ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING FBDNUM: %u\n", i, value); 8257ceee2cSliuzhongzhu 8357ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 8457ceee2cSliuzhongzhu HNS3_RING_RX_RING_PKTNUM_RECORD_REG); 8557ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING PKTNUM: %u\n", i, value); 8657ceee2cSliuzhongzhu 8757ceee2cSliuzhongzhu ring = ring_data[i].ring; 8857ceee2cSliuzhongzhu base_add_h = readl_relaxed(ring->tqp->io_base + 8957ceee2cSliuzhongzhu HNS3_RING_TX_RING_BASEADDR_H_REG); 9057ceee2cSliuzhongzhu base_add_l = readl_relaxed(ring->tqp->io_base + 9157ceee2cSliuzhongzhu HNS3_RING_TX_RING_BASEADDR_L_REG); 9257ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) BASE ADD: 0x%08x%08x\n", i, 9357ceee2cSliuzhongzhu base_add_h, base_add_l); 9457ceee2cSliuzhongzhu 9557ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 9657ceee2cSliuzhongzhu HNS3_RING_TX_RING_BD_NUM_REG); 9757ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING BD NUM: %u\n", i, value); 9857ceee2cSliuzhongzhu 9957ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 10057ceee2cSliuzhongzhu HNS3_RING_TX_RING_TC_REG); 10157ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING TC: %u\n", i, value); 10257ceee2cSliuzhongzhu 10357ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 10457ceee2cSliuzhongzhu HNS3_RING_TX_RING_TAIL_REG); 10557ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING TAIL: %u\n", i, value); 10657ceee2cSliuzhongzhu 10757ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 10857ceee2cSliuzhongzhu HNS3_RING_TX_RING_HEAD_REG); 10957ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING HEAD: %u\n", i, value); 11057ceee2cSliuzhongzhu 11157ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 11257ceee2cSliuzhongzhu HNS3_RING_TX_RING_FBDNUM_REG); 11357ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING FBDNUM: %u\n", i, value); 11457ceee2cSliuzhongzhu 11557ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 11657ceee2cSliuzhongzhu HNS3_RING_TX_RING_OFFSET_REG); 11757ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING OFFSET: %u\n", i, value); 11857ceee2cSliuzhongzhu 11957ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 12057ceee2cSliuzhongzhu HNS3_RING_TX_RING_PKTNUM_RECORD_REG); 12157ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING PKTNUM: %u\n\n", i, 12257ceee2cSliuzhongzhu value); 12357ceee2cSliuzhongzhu } 12457ceee2cSliuzhongzhu 12557ceee2cSliuzhongzhu return 0; 12657ceee2cSliuzhongzhu } 12757ceee2cSliuzhongzhu 1280c29d191Sliuzhongzhu static int hns3_dbg_queue_map(struct hnae3_handle *h) 1290c29d191Sliuzhongzhu { 1300c29d191Sliuzhongzhu struct hns3_nic_priv *priv = h->priv; 1310c29d191Sliuzhongzhu struct hns3_nic_ring_data *ring_data; 1320c29d191Sliuzhongzhu int i; 1330c29d191Sliuzhongzhu 1340c29d191Sliuzhongzhu if (!h->ae_algo->ops->get_global_queue_id) 1350c29d191Sliuzhongzhu return -EOPNOTSUPP; 1360c29d191Sliuzhongzhu 1370c29d191Sliuzhongzhu dev_info(&h->pdev->dev, "map info for queue id and vector id\n"); 1380c29d191Sliuzhongzhu dev_info(&h->pdev->dev, 1390c29d191Sliuzhongzhu "local queue id | global queue id | vector id\n"); 1400c29d191Sliuzhongzhu for (i = 0; i < h->kinfo.num_tqps; i++) { 1410c29d191Sliuzhongzhu u16 global_qid; 1420c29d191Sliuzhongzhu 1430c29d191Sliuzhongzhu global_qid = h->ae_algo->ops->get_global_queue_id(h, i); 1440c29d191Sliuzhongzhu ring_data = &priv->ring_data[i]; 1450c29d191Sliuzhongzhu if (!ring_data || !ring_data->ring || 1460c29d191Sliuzhongzhu !ring_data->ring->tqp_vector) 1470c29d191Sliuzhongzhu continue; 1480c29d191Sliuzhongzhu 1490c29d191Sliuzhongzhu dev_info(&h->pdev->dev, 1500c29d191Sliuzhongzhu " %4d %4d %4d\n", 1510c29d191Sliuzhongzhu i, global_qid, 1520c29d191Sliuzhongzhu ring_data->ring->tqp_vector->vector_irq); 1530c29d191Sliuzhongzhu } 1540c29d191Sliuzhongzhu 1550c29d191Sliuzhongzhu return 0; 1560c29d191Sliuzhongzhu } 1570c29d191Sliuzhongzhu 158122bedc5Sliuzhongzhu static int hns3_dbg_bd_info(struct hnae3_handle *h, char *cmd_buf) 159122bedc5Sliuzhongzhu { 160122bedc5Sliuzhongzhu struct hns3_nic_priv *priv = h->priv; 161122bedc5Sliuzhongzhu struct hns3_nic_ring_data *ring_data; 162122bedc5Sliuzhongzhu struct hns3_desc *rx_desc, *tx_desc; 163122bedc5Sliuzhongzhu struct device *dev = &h->pdev->dev; 164122bedc5Sliuzhongzhu struct hns3_enet_ring *ring; 165122bedc5Sliuzhongzhu u32 tx_index, rx_index; 166122bedc5Sliuzhongzhu u32 q_num, value; 167122bedc5Sliuzhongzhu int cnt; 168122bedc5Sliuzhongzhu 169122bedc5Sliuzhongzhu cnt = sscanf(&cmd_buf[8], "%u %u", &q_num, &tx_index); 170122bedc5Sliuzhongzhu if (cnt == 2) { 171122bedc5Sliuzhongzhu rx_index = tx_index; 172122bedc5Sliuzhongzhu } else if (cnt != 1) { 173122bedc5Sliuzhongzhu dev_err(dev, "bd info: bad command string, cnt=%d\n", cnt); 174122bedc5Sliuzhongzhu return -EINVAL; 175122bedc5Sliuzhongzhu } 176122bedc5Sliuzhongzhu 177122bedc5Sliuzhongzhu if (q_num >= h->kinfo.num_tqps) { 178122bedc5Sliuzhongzhu dev_err(dev, "Queue number(%u) is out of range(%u)\n", q_num, 179122bedc5Sliuzhongzhu h->kinfo.num_tqps - 1); 180122bedc5Sliuzhongzhu return -EINVAL; 181122bedc5Sliuzhongzhu } 182122bedc5Sliuzhongzhu 183122bedc5Sliuzhongzhu ring_data = priv->ring_data; 184122bedc5Sliuzhongzhu ring = ring_data[q_num].ring; 185122bedc5Sliuzhongzhu value = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_TAIL_REG); 186122bedc5Sliuzhongzhu tx_index = (cnt == 1) ? value : tx_index; 187122bedc5Sliuzhongzhu 188122bedc5Sliuzhongzhu if (tx_index >= ring->desc_num) { 189122bedc5Sliuzhongzhu dev_err(dev, "bd index (%u) is out of range(%u)\n", tx_index, 190122bedc5Sliuzhongzhu ring->desc_num - 1); 191122bedc5Sliuzhongzhu return -EINVAL; 192122bedc5Sliuzhongzhu } 193122bedc5Sliuzhongzhu 194122bedc5Sliuzhongzhu tx_desc = &ring->desc[tx_index]; 195122bedc5Sliuzhongzhu dev_info(dev, "TX Queue Num: %u, BD Index: %u\n", q_num, tx_index); 196122bedc5Sliuzhongzhu dev_info(dev, "(TX) addr: 0x%llx\n", tx_desc->addr); 197122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.vlan_tag); 198122bedc5Sliuzhongzhu dev_info(dev, "(TX)send_size: %u\n", tx_desc->tx.send_size); 199122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_tso: %u\n", tx_desc->tx.type_cs_vlan_tso); 200122bedc5Sliuzhongzhu dev_info(dev, "(TX)l2_len: %u\n", tx_desc->tx.l2_len); 201122bedc5Sliuzhongzhu dev_info(dev, "(TX)l3_len: %u\n", tx_desc->tx.l3_len); 202122bedc5Sliuzhongzhu dev_info(dev, "(TX)l4_len: %u\n", tx_desc->tx.l4_len); 203122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.outer_vlan_tag); 204122bedc5Sliuzhongzhu dev_info(dev, "(TX)tv: %u\n", tx_desc->tx.tv); 205122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_msec: %u\n", tx_desc->tx.ol_type_vlan_msec); 206122bedc5Sliuzhongzhu dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len); 207122bedc5Sliuzhongzhu dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len); 208122bedc5Sliuzhongzhu dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len); 209122bedc5Sliuzhongzhu dev_info(dev, "(TX)paylen: %u\n", tx_desc->tx.paylen); 210122bedc5Sliuzhongzhu dev_info(dev, "(TX)vld_ra_ri: %u\n", tx_desc->tx.bdtp_fe_sc_vld_ra_ri); 211122bedc5Sliuzhongzhu dev_info(dev, "(TX)mss: %u\n", tx_desc->tx.mss); 212122bedc5Sliuzhongzhu 213122bedc5Sliuzhongzhu ring = ring_data[q_num + h->kinfo.num_tqps].ring; 214122bedc5Sliuzhongzhu value = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_TAIL_REG); 215122bedc5Sliuzhongzhu rx_index = (cnt == 1) ? value : tx_index; 216122bedc5Sliuzhongzhu rx_desc = &ring->desc[rx_index]; 217122bedc5Sliuzhongzhu 218122bedc5Sliuzhongzhu dev_info(dev, "RX Queue Num: %u, BD Index: %u\n", q_num, rx_index); 219122bedc5Sliuzhongzhu dev_info(dev, "(RX)addr: 0x%llx\n", rx_desc->addr); 220122bedc5Sliuzhongzhu dev_info(dev, "(RX)pkt_len: %u\n", rx_desc->rx.pkt_len); 221122bedc5Sliuzhongzhu dev_info(dev, "(RX)size: %u\n", rx_desc->rx.size); 222122bedc5Sliuzhongzhu dev_info(dev, "(RX)rss_hash: %u\n", rx_desc->rx.rss_hash); 223122bedc5Sliuzhongzhu dev_info(dev, "(RX)fd_id: %u\n", rx_desc->rx.fd_id); 224122bedc5Sliuzhongzhu dev_info(dev, "(RX)vlan_tag: %u\n", rx_desc->rx.vlan_tag); 225122bedc5Sliuzhongzhu dev_info(dev, "(RX)o_dm_vlan_id_fb: %u\n", rx_desc->rx.o_dm_vlan_id_fb); 226122bedc5Sliuzhongzhu dev_info(dev, "(RX)ot_vlan_tag: %u\n", rx_desc->rx.ot_vlan_tag); 227122bedc5Sliuzhongzhu dev_info(dev, "(RX)bd_base_info: %u\n", rx_desc->rx.bd_base_info); 228122bedc5Sliuzhongzhu 229122bedc5Sliuzhongzhu return 0; 230122bedc5Sliuzhongzhu } 231122bedc5Sliuzhongzhu 232b2292360Sliuzhongzhu static void hns3_dbg_help(struct hnae3_handle *h) 233b2292360Sliuzhongzhu { 23427cf979aSliuzhongzhu #define HNS3_DBG_BUF_LEN 256 23527cf979aSliuzhongzhu 23627cf979aSliuzhongzhu char printf_buf[HNS3_DBG_BUF_LEN]; 23727cf979aSliuzhongzhu 238b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "available commands\n"); 239b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "queue info [number]\n"); 2400c29d191Sliuzhongzhu dev_info(&h->pdev->dev, "queue map\n"); 241122bedc5Sliuzhongzhu dev_info(&h->pdev->dev, "bd info [q_num] <bd index>\n"); 242b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "dump fd tcam\n"); 2432849d4e7Sliuzhongzhu dev_info(&h->pdev->dev, "dump tc\n"); 24482e00b86Sliuzhongzhu dev_info(&h->pdev->dev, "dump tm map [q_num]\n"); 24596227f4cSliuzhongzhu dev_info(&h->pdev->dev, "dump tm\n"); 246d958919dSliuzhongzhu dev_info(&h->pdev->dev, "dump qos pause cfg\n"); 2476fc22440Sliuzhongzhu dev_info(&h->pdev->dev, "dump qos pri map\n"); 2487d9d7f88Sliuzhongzhu dev_info(&h->pdev->dev, "dump qos buf cfg\n"); 2497737f1fbSliuzhongzhu dev_info(&h->pdev->dev, "dump mng tbl\n"); 25027cf979aSliuzhongzhu 25127cf979aSliuzhongzhu memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 25227cf979aSliuzhongzhu strncat(printf_buf, "dump reg [[bios common] [ssu <prt_id>]", 25327cf979aSliuzhongzhu HNS3_DBG_BUF_LEN - 1); 25427cf979aSliuzhongzhu strncat(printf_buf + strlen(printf_buf), 25527cf979aSliuzhongzhu " [igu egu <prt_id>] [rpu <tc_queue_num>]", 25627cf979aSliuzhongzhu HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 25727cf979aSliuzhongzhu strncat(printf_buf + strlen(printf_buf), 25827cf979aSliuzhongzhu " [rtc] [ppp] [rcb] [tqp <q_num>]]\n", 25927cf979aSliuzhongzhu HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 26027cf979aSliuzhongzhu dev_info(&h->pdev->dev, "%s", printf_buf); 261c0ebebb9Sliuzhongzhu 262c0ebebb9Sliuzhongzhu memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 263c0ebebb9Sliuzhongzhu strncat(printf_buf, "dump reg dcb [port_id] [pri_id] [pg_id]", 264c0ebebb9Sliuzhongzhu HNS3_DBG_BUF_LEN - 1); 265c0ebebb9Sliuzhongzhu strncat(printf_buf + strlen(printf_buf), " [rq_id] [nq_id] [qset_id]\n", 266c0ebebb9Sliuzhongzhu HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 267c0ebebb9Sliuzhongzhu dev_info(&h->pdev->dev, "%s", printf_buf); 268b2292360Sliuzhongzhu } 269b2292360Sliuzhongzhu 270b2292360Sliuzhongzhu static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer, 271b2292360Sliuzhongzhu size_t count, loff_t *ppos) 272b2292360Sliuzhongzhu { 273b2292360Sliuzhongzhu int uncopy_bytes; 274b2292360Sliuzhongzhu char *buf; 275b2292360Sliuzhongzhu int len; 276b2292360Sliuzhongzhu 277b2292360Sliuzhongzhu if (*ppos != 0) 278b2292360Sliuzhongzhu return 0; 279b2292360Sliuzhongzhu 280b2292360Sliuzhongzhu if (count < HNS3_DBG_READ_LEN) 281b2292360Sliuzhongzhu return -ENOSPC; 282b2292360Sliuzhongzhu 283b2292360Sliuzhongzhu buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL); 284b2292360Sliuzhongzhu if (!buf) 285b2292360Sliuzhongzhu return -ENOMEM; 286b2292360Sliuzhongzhu 287b2292360Sliuzhongzhu len = snprintf(buf, HNS3_DBG_READ_LEN, "%s\n", 288b2292360Sliuzhongzhu "Please echo help to cmd to get help information"); 289b2292360Sliuzhongzhu uncopy_bytes = copy_to_user(buffer, buf, len); 290b2292360Sliuzhongzhu 291b2292360Sliuzhongzhu kfree(buf); 292b2292360Sliuzhongzhu 293b2292360Sliuzhongzhu if (uncopy_bytes) 294b2292360Sliuzhongzhu return -EFAULT; 295b2292360Sliuzhongzhu 296b2292360Sliuzhongzhu return (*ppos = len); 297b2292360Sliuzhongzhu } 298b2292360Sliuzhongzhu 299b2292360Sliuzhongzhu static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer, 300b2292360Sliuzhongzhu size_t count, loff_t *ppos) 301b2292360Sliuzhongzhu { 302b2292360Sliuzhongzhu struct hnae3_handle *handle = filp->private_data; 30357ceee2cSliuzhongzhu struct hns3_nic_priv *priv = handle->priv; 304b2292360Sliuzhongzhu char *cmd_buf, *cmd_buf_tmp; 305b2292360Sliuzhongzhu int uncopied_bytes; 306b2292360Sliuzhongzhu int ret = 0; 307b2292360Sliuzhongzhu 308b2292360Sliuzhongzhu if (*ppos != 0) 309b2292360Sliuzhongzhu return 0; 310b2292360Sliuzhongzhu 31157ceee2cSliuzhongzhu /* Judge if the instance is being reset. */ 3127737f1fbSliuzhongzhu if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 31357ceee2cSliuzhongzhu test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 31457ceee2cSliuzhongzhu return 0; 31557ceee2cSliuzhongzhu 316b2292360Sliuzhongzhu cmd_buf = kzalloc(count + 1, GFP_KERNEL); 317b2292360Sliuzhongzhu if (!cmd_buf) 318b2292360Sliuzhongzhu return count; 319b2292360Sliuzhongzhu 320b2292360Sliuzhongzhu uncopied_bytes = copy_from_user(cmd_buf, buffer, count); 321b2292360Sliuzhongzhu if (uncopied_bytes) { 322b2292360Sliuzhongzhu kfree(cmd_buf); 323b2292360Sliuzhongzhu return -EFAULT; 324b2292360Sliuzhongzhu } 325b2292360Sliuzhongzhu 326b2292360Sliuzhongzhu cmd_buf[count] = '\0'; 327b2292360Sliuzhongzhu 328b2292360Sliuzhongzhu cmd_buf_tmp = strchr(cmd_buf, '\n'); 329b2292360Sliuzhongzhu if (cmd_buf_tmp) { 330b2292360Sliuzhongzhu *cmd_buf_tmp = '\0'; 331b2292360Sliuzhongzhu count = cmd_buf_tmp - cmd_buf + 1; 332b2292360Sliuzhongzhu } 333b2292360Sliuzhongzhu 334b2292360Sliuzhongzhu if (strncmp(cmd_buf, "help", 4) == 0) 335b2292360Sliuzhongzhu hns3_dbg_help(handle); 33657ceee2cSliuzhongzhu else if (strncmp(cmd_buf, "queue info", 10) == 0) 33757ceee2cSliuzhongzhu ret = hns3_dbg_queue_info(handle, cmd_buf); 3380c29d191Sliuzhongzhu else if (strncmp(cmd_buf, "queue map", 9) == 0) 3390c29d191Sliuzhongzhu ret = hns3_dbg_queue_map(handle); 340122bedc5Sliuzhongzhu else if (strncmp(cmd_buf, "bd info", 7) == 0) 341122bedc5Sliuzhongzhu ret = hns3_dbg_bd_info(handle, cmd_buf); 3423c666b58Sliuzhongzhu else if (handle->ae_algo->ops->dbg_run_cmd) 3433c666b58Sliuzhongzhu ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf); 344b2292360Sliuzhongzhu 345b2292360Sliuzhongzhu if (ret) 346b2292360Sliuzhongzhu hns3_dbg_help(handle); 347b2292360Sliuzhongzhu 348b2292360Sliuzhongzhu kfree(cmd_buf); 349b2292360Sliuzhongzhu cmd_buf = NULL; 350b2292360Sliuzhongzhu 351b2292360Sliuzhongzhu return count; 352b2292360Sliuzhongzhu } 353b2292360Sliuzhongzhu 354b2292360Sliuzhongzhu static const struct file_operations hns3_dbg_cmd_fops = { 355b2292360Sliuzhongzhu .owner = THIS_MODULE, 356b2292360Sliuzhongzhu .open = simple_open, 357b2292360Sliuzhongzhu .read = hns3_dbg_cmd_read, 358b2292360Sliuzhongzhu .write = hns3_dbg_cmd_write, 359b2292360Sliuzhongzhu }; 360b2292360Sliuzhongzhu 361b2292360Sliuzhongzhu void hns3_dbg_init(struct hnae3_handle *handle) 362b2292360Sliuzhongzhu { 363b2292360Sliuzhongzhu const char *name = pci_name(handle->pdev); 364b2292360Sliuzhongzhu struct dentry *pfile; 365b2292360Sliuzhongzhu 366b2292360Sliuzhongzhu handle->hnae3_dbgfs = debugfs_create_dir(name, hns3_dbgfs_root); 367b2292360Sliuzhongzhu if (!handle->hnae3_dbgfs) 368b2292360Sliuzhongzhu return; 369b2292360Sliuzhongzhu 370b2292360Sliuzhongzhu pfile = debugfs_create_file("cmd", 0600, handle->hnae3_dbgfs, handle, 371b2292360Sliuzhongzhu &hns3_dbg_cmd_fops); 372b2292360Sliuzhongzhu if (!pfile) { 373b2292360Sliuzhongzhu debugfs_remove_recursive(handle->hnae3_dbgfs); 374b2292360Sliuzhongzhu handle->hnae3_dbgfs = NULL; 375b2292360Sliuzhongzhu dev_warn(&handle->pdev->dev, "create file for %s fail\n", 376b2292360Sliuzhongzhu name); 377b2292360Sliuzhongzhu } 378b2292360Sliuzhongzhu } 379b2292360Sliuzhongzhu 380b2292360Sliuzhongzhu void hns3_dbg_uninit(struct hnae3_handle *handle) 381b2292360Sliuzhongzhu { 382b2292360Sliuzhongzhu debugfs_remove_recursive(handle->hnae3_dbgfs); 383b2292360Sliuzhongzhu handle->hnae3_dbgfs = NULL; 384b2292360Sliuzhongzhu } 385b2292360Sliuzhongzhu 386b2292360Sliuzhongzhu void hns3_dbg_register_debugfs(const char *debugfs_dir_name) 387b2292360Sliuzhongzhu { 388b2292360Sliuzhongzhu hns3_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL); 389b2292360Sliuzhongzhu if (!hns3_dbgfs_root) { 390b2292360Sliuzhongzhu pr_warn("Register debugfs for %s fail\n", debugfs_dir_name); 391b2292360Sliuzhongzhu return; 392b2292360Sliuzhongzhu } 393b2292360Sliuzhongzhu } 394b2292360Sliuzhongzhu 395b2292360Sliuzhongzhu void hns3_dbg_unregister_debugfs(void) 396b2292360Sliuzhongzhu { 397b2292360Sliuzhongzhu debugfs_remove_recursive(hns3_dbgfs_root); 398b2292360Sliuzhongzhu hns3_dbgfs_root = NULL; 399b2292360Sliuzhongzhu } 400