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 117ac243f9SYufeng Mo #define HNS3_DBG_WRITE_LEN 1024 12b2292360Sliuzhongzhu 13b2292360Sliuzhongzhu static struct dentry *hns3_dbgfs_root; 14b2292360Sliuzhongzhu 15ebaf1908SWeihang Li static int hns3_dbg_queue_info(struct hnae3_handle *h, 16ebaf1908SWeihang Li const char *cmd_buf) 1757ceee2cSliuzhongzhu { 1857ceee2cSliuzhongzhu struct hns3_nic_priv *priv = h->priv; 1957ceee2cSliuzhongzhu struct hns3_nic_ring_data *ring_data; 2057ceee2cSliuzhongzhu struct hns3_enet_ring *ring; 2157ceee2cSliuzhongzhu u32 base_add_l, base_add_h; 2257ceee2cSliuzhongzhu u32 queue_num, queue_max; 2357ceee2cSliuzhongzhu u32 value, i = 0; 2457ceee2cSliuzhongzhu int cnt; 2557ceee2cSliuzhongzhu 2657ceee2cSliuzhongzhu if (!priv->ring_data) { 2757ceee2cSliuzhongzhu dev_err(&h->pdev->dev, "ring_data is NULL\n"); 2857ceee2cSliuzhongzhu return -EFAULT; 2957ceee2cSliuzhongzhu } 3057ceee2cSliuzhongzhu 3157ceee2cSliuzhongzhu queue_max = h->kinfo.num_tqps; 3257ceee2cSliuzhongzhu cnt = kstrtouint(&cmd_buf[11], 0, &queue_num); 3357ceee2cSliuzhongzhu if (cnt) 3457ceee2cSliuzhongzhu queue_num = 0; 3557ceee2cSliuzhongzhu else 3657ceee2cSliuzhongzhu queue_max = queue_num + 1; 3757ceee2cSliuzhongzhu 3857ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "queue info\n"); 3957ceee2cSliuzhongzhu 4057ceee2cSliuzhongzhu if (queue_num >= h->kinfo.num_tqps) { 4157ceee2cSliuzhongzhu dev_err(&h->pdev->dev, 42ed5b255bSYufeng Mo "Queue number(%u) is out of range(0-%u)\n", queue_num, 4357ceee2cSliuzhongzhu h->kinfo.num_tqps - 1); 4457ceee2cSliuzhongzhu return -EINVAL; 4557ceee2cSliuzhongzhu } 4657ceee2cSliuzhongzhu 4757ceee2cSliuzhongzhu ring_data = priv->ring_data; 4857ceee2cSliuzhongzhu for (i = queue_num; i < queue_max; i++) { 4957ceee2cSliuzhongzhu /* Each cycle needs to determine whether the instance is reset, 5057ceee2cSliuzhongzhu * to prevent reference to invalid memory. And need to ensure 5157ceee2cSliuzhongzhu * that the following code is executed within 100ms. 5257ceee2cSliuzhongzhu */ 537737f1fbSliuzhongzhu if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 5457ceee2cSliuzhongzhu test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 5557ceee2cSliuzhongzhu return -EPERM; 5657ceee2cSliuzhongzhu 57122bedc5Sliuzhongzhu ring = ring_data[(u32)(i + h->kinfo.num_tqps)].ring; 5857ceee2cSliuzhongzhu base_add_h = readl_relaxed(ring->tqp->io_base + 5957ceee2cSliuzhongzhu HNS3_RING_RX_RING_BASEADDR_H_REG); 6057ceee2cSliuzhongzhu base_add_l = readl_relaxed(ring->tqp->io_base + 6157ceee2cSliuzhongzhu HNS3_RING_RX_RING_BASEADDR_L_REG); 6257ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) BASE ADD: 0x%08x%08x\n", i, 6357ceee2cSliuzhongzhu base_add_h, base_add_l); 6457ceee2cSliuzhongzhu 6557ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 6657ceee2cSliuzhongzhu HNS3_RING_RX_RING_BD_NUM_REG); 6757ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING BD NUM: %u\n", i, value); 6857ceee2cSliuzhongzhu 6957ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 7057ceee2cSliuzhongzhu HNS3_RING_RX_RING_BD_LEN_REG); 7157ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING BD LEN: %u\n", i, value); 7257ceee2cSliuzhongzhu 7357ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 7457ceee2cSliuzhongzhu HNS3_RING_RX_RING_TAIL_REG); 7557ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING TAIL: %u\n", i, value); 7657ceee2cSliuzhongzhu 7757ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 7857ceee2cSliuzhongzhu HNS3_RING_RX_RING_HEAD_REG); 7957ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING HEAD: %u\n", i, value); 8057ceee2cSliuzhongzhu 8157ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 8257ceee2cSliuzhongzhu HNS3_RING_RX_RING_FBDNUM_REG); 8357ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING FBDNUM: %u\n", i, value); 8457ceee2cSliuzhongzhu 8557ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 8657ceee2cSliuzhongzhu HNS3_RING_RX_RING_PKTNUM_RECORD_REG); 8757ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "RX(%d) RING PKTNUM: %u\n", i, value); 8857ceee2cSliuzhongzhu 8957ceee2cSliuzhongzhu ring = ring_data[i].ring; 9057ceee2cSliuzhongzhu base_add_h = readl_relaxed(ring->tqp->io_base + 9157ceee2cSliuzhongzhu HNS3_RING_TX_RING_BASEADDR_H_REG); 9257ceee2cSliuzhongzhu base_add_l = readl_relaxed(ring->tqp->io_base + 9357ceee2cSliuzhongzhu HNS3_RING_TX_RING_BASEADDR_L_REG); 9457ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) BASE ADD: 0x%08x%08x\n", i, 9557ceee2cSliuzhongzhu base_add_h, base_add_l); 9657ceee2cSliuzhongzhu 9757ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 9857ceee2cSliuzhongzhu HNS3_RING_TX_RING_BD_NUM_REG); 9957ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING BD NUM: %u\n", i, value); 10057ceee2cSliuzhongzhu 10157ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 10257ceee2cSliuzhongzhu HNS3_RING_TX_RING_TC_REG); 10357ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING TC: %u\n", i, value); 10457ceee2cSliuzhongzhu 10557ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 10657ceee2cSliuzhongzhu HNS3_RING_TX_RING_TAIL_REG); 10757ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING TAIL: %u\n", i, value); 10857ceee2cSliuzhongzhu 10957ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 11057ceee2cSliuzhongzhu HNS3_RING_TX_RING_HEAD_REG); 11157ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING HEAD: %u\n", i, value); 11257ceee2cSliuzhongzhu 11357ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 11457ceee2cSliuzhongzhu HNS3_RING_TX_RING_FBDNUM_REG); 11557ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING FBDNUM: %u\n", i, value); 11657ceee2cSliuzhongzhu 11757ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 11857ceee2cSliuzhongzhu HNS3_RING_TX_RING_OFFSET_REG); 11957ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING OFFSET: %u\n", i, value); 12057ceee2cSliuzhongzhu 12157ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 12257ceee2cSliuzhongzhu HNS3_RING_TX_RING_PKTNUM_RECORD_REG); 12357ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "TX(%d) RING PKTNUM: %u\n\n", i, 12457ceee2cSliuzhongzhu value); 12557ceee2cSliuzhongzhu } 12657ceee2cSliuzhongzhu 12757ceee2cSliuzhongzhu return 0; 12857ceee2cSliuzhongzhu } 12957ceee2cSliuzhongzhu 1300c29d191Sliuzhongzhu static int hns3_dbg_queue_map(struct hnae3_handle *h) 1310c29d191Sliuzhongzhu { 1320c29d191Sliuzhongzhu struct hns3_nic_priv *priv = h->priv; 1330c29d191Sliuzhongzhu struct hns3_nic_ring_data *ring_data; 1340c29d191Sliuzhongzhu int i; 1350c29d191Sliuzhongzhu 1360c29d191Sliuzhongzhu if (!h->ae_algo->ops->get_global_queue_id) 1370c29d191Sliuzhongzhu return -EOPNOTSUPP; 1380c29d191Sliuzhongzhu 1390c29d191Sliuzhongzhu dev_info(&h->pdev->dev, "map info for queue id and vector id\n"); 1400c29d191Sliuzhongzhu dev_info(&h->pdev->dev, 1410c29d191Sliuzhongzhu "local queue id | global queue id | vector id\n"); 1420c29d191Sliuzhongzhu for (i = 0; i < h->kinfo.num_tqps; i++) { 1430c29d191Sliuzhongzhu u16 global_qid; 1440c29d191Sliuzhongzhu 1450c29d191Sliuzhongzhu global_qid = h->ae_algo->ops->get_global_queue_id(h, i); 1460c29d191Sliuzhongzhu ring_data = &priv->ring_data[i]; 1470c29d191Sliuzhongzhu if (!ring_data || !ring_data->ring || 1480c29d191Sliuzhongzhu !ring_data->ring->tqp_vector) 1490c29d191Sliuzhongzhu continue; 1500c29d191Sliuzhongzhu 1510c29d191Sliuzhongzhu dev_info(&h->pdev->dev, 1520c29d191Sliuzhongzhu " %4d %4d %4d\n", 1530c29d191Sliuzhongzhu i, global_qid, 1540c29d191Sliuzhongzhu ring_data->ring->tqp_vector->vector_irq); 1550c29d191Sliuzhongzhu } 1560c29d191Sliuzhongzhu 1570c29d191Sliuzhongzhu return 0; 1580c29d191Sliuzhongzhu } 1590c29d191Sliuzhongzhu 160ebaf1908SWeihang Li static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf) 161122bedc5Sliuzhongzhu { 162122bedc5Sliuzhongzhu struct hns3_nic_priv *priv = h->priv; 163122bedc5Sliuzhongzhu struct hns3_nic_ring_data *ring_data; 164122bedc5Sliuzhongzhu struct hns3_desc *rx_desc, *tx_desc; 165122bedc5Sliuzhongzhu struct device *dev = &h->pdev->dev; 166122bedc5Sliuzhongzhu struct hns3_enet_ring *ring; 167122bedc5Sliuzhongzhu u32 tx_index, rx_index; 168122bedc5Sliuzhongzhu u32 q_num, value; 169122bedc5Sliuzhongzhu int cnt; 170122bedc5Sliuzhongzhu 171122bedc5Sliuzhongzhu cnt = sscanf(&cmd_buf[8], "%u %u", &q_num, &tx_index); 172122bedc5Sliuzhongzhu if (cnt == 2) { 173122bedc5Sliuzhongzhu rx_index = tx_index; 174122bedc5Sliuzhongzhu } else if (cnt != 1) { 175122bedc5Sliuzhongzhu dev_err(dev, "bd info: bad command string, cnt=%d\n", cnt); 176122bedc5Sliuzhongzhu return -EINVAL; 177122bedc5Sliuzhongzhu } 178122bedc5Sliuzhongzhu 179122bedc5Sliuzhongzhu if (q_num >= h->kinfo.num_tqps) { 180ed5b255bSYufeng Mo dev_err(dev, "Queue number(%u) is out of range(0-%u)\n", q_num, 181122bedc5Sliuzhongzhu h->kinfo.num_tqps - 1); 182122bedc5Sliuzhongzhu return -EINVAL; 183122bedc5Sliuzhongzhu } 184122bedc5Sliuzhongzhu 185122bedc5Sliuzhongzhu ring_data = priv->ring_data; 186122bedc5Sliuzhongzhu ring = ring_data[q_num].ring; 187122bedc5Sliuzhongzhu value = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_TAIL_REG); 188122bedc5Sliuzhongzhu tx_index = (cnt == 1) ? value : tx_index; 189122bedc5Sliuzhongzhu 190122bedc5Sliuzhongzhu if (tx_index >= ring->desc_num) { 191ed5b255bSYufeng Mo dev_err(dev, "bd index(%u) is out of range(0-%u)\n", tx_index, 192122bedc5Sliuzhongzhu ring->desc_num - 1); 193122bedc5Sliuzhongzhu return -EINVAL; 194122bedc5Sliuzhongzhu } 195122bedc5Sliuzhongzhu 196122bedc5Sliuzhongzhu tx_desc = &ring->desc[tx_index]; 197122bedc5Sliuzhongzhu dev_info(dev, "TX Queue Num: %u, BD Index: %u\n", q_num, tx_index); 198122bedc5Sliuzhongzhu dev_info(dev, "(TX)addr: 0x%llx\n", tx_desc->addr); 199122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.vlan_tag); 200122bedc5Sliuzhongzhu dev_info(dev, "(TX)send_size: %u\n", tx_desc->tx.send_size); 201122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_tso: %u\n", tx_desc->tx.type_cs_vlan_tso); 202122bedc5Sliuzhongzhu dev_info(dev, "(TX)l2_len: %u\n", tx_desc->tx.l2_len); 203122bedc5Sliuzhongzhu dev_info(dev, "(TX)l3_len: %u\n", tx_desc->tx.l3_len); 204122bedc5Sliuzhongzhu dev_info(dev, "(TX)l4_len: %u\n", tx_desc->tx.l4_len); 205122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_tag: %u\n", tx_desc->tx.outer_vlan_tag); 206122bedc5Sliuzhongzhu dev_info(dev, "(TX)tv: %u\n", tx_desc->tx.tv); 207122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_msec: %u\n", tx_desc->tx.ol_type_vlan_msec); 208122bedc5Sliuzhongzhu dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len); 209122bedc5Sliuzhongzhu dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len); 210122bedc5Sliuzhongzhu dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len); 211122bedc5Sliuzhongzhu dev_info(dev, "(TX)paylen: %u\n", tx_desc->tx.paylen); 212122bedc5Sliuzhongzhu dev_info(dev, "(TX)vld_ra_ri: %u\n", tx_desc->tx.bdtp_fe_sc_vld_ra_ri); 213122bedc5Sliuzhongzhu dev_info(dev, "(TX)mss: %u\n", tx_desc->tx.mss); 214122bedc5Sliuzhongzhu 215122bedc5Sliuzhongzhu ring = ring_data[q_num + h->kinfo.num_tqps].ring; 216122bedc5Sliuzhongzhu value = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_TAIL_REG); 217122bedc5Sliuzhongzhu rx_index = (cnt == 1) ? value : tx_index; 218122bedc5Sliuzhongzhu rx_desc = &ring->desc[rx_index]; 219122bedc5Sliuzhongzhu 220122bedc5Sliuzhongzhu dev_info(dev, "RX Queue Num: %u, BD Index: %u\n", q_num, rx_index); 221122bedc5Sliuzhongzhu dev_info(dev, "(RX)addr: 0x%llx\n", rx_desc->addr); 222ed5b255bSYufeng Mo dev_info(dev, "(RX)l234_info: %u\n", rx_desc->rx.l234_info); 223122bedc5Sliuzhongzhu dev_info(dev, "(RX)pkt_len: %u\n", rx_desc->rx.pkt_len); 224122bedc5Sliuzhongzhu dev_info(dev, "(RX)size: %u\n", rx_desc->rx.size); 225122bedc5Sliuzhongzhu dev_info(dev, "(RX)rss_hash: %u\n", rx_desc->rx.rss_hash); 226122bedc5Sliuzhongzhu dev_info(dev, "(RX)fd_id: %u\n", rx_desc->rx.fd_id); 227122bedc5Sliuzhongzhu dev_info(dev, "(RX)vlan_tag: %u\n", rx_desc->rx.vlan_tag); 228122bedc5Sliuzhongzhu dev_info(dev, "(RX)o_dm_vlan_id_fb: %u\n", rx_desc->rx.o_dm_vlan_id_fb); 229122bedc5Sliuzhongzhu dev_info(dev, "(RX)ot_vlan_tag: %u\n", rx_desc->rx.ot_vlan_tag); 230122bedc5Sliuzhongzhu dev_info(dev, "(RX)bd_base_info: %u\n", rx_desc->rx.bd_base_info); 231122bedc5Sliuzhongzhu 232122bedc5Sliuzhongzhu return 0; 233122bedc5Sliuzhongzhu } 234122bedc5Sliuzhongzhu 235b2292360Sliuzhongzhu static void hns3_dbg_help(struct hnae3_handle *h) 236b2292360Sliuzhongzhu { 23727cf979aSliuzhongzhu #define HNS3_DBG_BUF_LEN 256 23827cf979aSliuzhongzhu 23927cf979aSliuzhongzhu char printf_buf[HNS3_DBG_BUF_LEN]; 24027cf979aSliuzhongzhu 241b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "available commands\n"); 242ed5b255bSYufeng Mo dev_info(&h->pdev->dev, "queue info <number>\n"); 2430c29d191Sliuzhongzhu dev_info(&h->pdev->dev, "queue map\n"); 244ed5b255bSYufeng Mo dev_info(&h->pdev->dev, "bd info <q_num> <bd index>\n"); 24597afd47bSYufeng Mo 24697afd47bSYufeng Mo if (!hns3_is_phys_func(h->pdev)) 24797afd47bSYufeng Mo return; 24897afd47bSYufeng Mo 249b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "dump fd tcam\n"); 2502849d4e7Sliuzhongzhu dev_info(&h->pdev->dev, "dump tc\n"); 251ed5b255bSYufeng Mo dev_info(&h->pdev->dev, "dump tm map <q_num>\n"); 25296227f4cSliuzhongzhu dev_info(&h->pdev->dev, "dump tm\n"); 253d958919dSliuzhongzhu dev_info(&h->pdev->dev, "dump qos pause cfg\n"); 2546fc22440Sliuzhongzhu dev_info(&h->pdev->dev, "dump qos pri map\n"); 2557d9d7f88Sliuzhongzhu dev_info(&h->pdev->dev, "dump qos buf cfg\n"); 2567737f1fbSliuzhongzhu dev_info(&h->pdev->dev, "dump mng tbl\n"); 257f02eb82dSHuazhong Tan dev_info(&h->pdev->dev, "dump reset info\n"); 25833a90e2fSZhongzhu Liu dev_info(&h->pdev->dev, "dump m7 info\n"); 259ffd140e2SWeihang Li dev_info(&h->pdev->dev, "dump ncl_config <offset> <length>(in hex)\n"); 260a6345787SWeihang Li dev_info(&h->pdev->dev, "dump mac tnl status\n"); 26127cf979aSliuzhongzhu 26227cf979aSliuzhongzhu memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 263ed5b255bSYufeng Mo strncat(printf_buf, "dump reg [[bios common] [ssu <port_id>]", 26427cf979aSliuzhongzhu HNS3_DBG_BUF_LEN - 1); 26527cf979aSliuzhongzhu strncat(printf_buf + strlen(printf_buf), 266ed5b255bSYufeng Mo " [igu egu <port_id>] [rpu <tc_queue_num>]", 26727cf979aSliuzhongzhu HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 26827cf979aSliuzhongzhu strncat(printf_buf + strlen(printf_buf), 269ed5b255bSYufeng Mo " [rtc] [ppp] [rcb] [tqp <queue_num>]]\n", 27027cf979aSliuzhongzhu HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 27127cf979aSliuzhongzhu dev_info(&h->pdev->dev, "%s", printf_buf); 272c0ebebb9Sliuzhongzhu 273c0ebebb9Sliuzhongzhu memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 274ed5b255bSYufeng Mo strncat(printf_buf, "dump reg dcb <port_id> <pri_id> <pg_id>", 275c0ebebb9Sliuzhongzhu HNS3_DBG_BUF_LEN - 1); 276ed5b255bSYufeng Mo strncat(printf_buf + strlen(printf_buf), " <rq_id> <nq_id> <qset_id>\n", 277c0ebebb9Sliuzhongzhu HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 278c0ebebb9Sliuzhongzhu dev_info(&h->pdev->dev, "%s", printf_buf); 279b2292360Sliuzhongzhu } 280b2292360Sliuzhongzhu 281b2292360Sliuzhongzhu static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer, 282b2292360Sliuzhongzhu size_t count, loff_t *ppos) 283b2292360Sliuzhongzhu { 284b2292360Sliuzhongzhu int uncopy_bytes; 285b2292360Sliuzhongzhu char *buf; 286b2292360Sliuzhongzhu int len; 287b2292360Sliuzhongzhu 288b2292360Sliuzhongzhu if (*ppos != 0) 289b2292360Sliuzhongzhu return 0; 290b2292360Sliuzhongzhu 291b2292360Sliuzhongzhu if (count < HNS3_DBG_READ_LEN) 292b2292360Sliuzhongzhu return -ENOSPC; 293b2292360Sliuzhongzhu 294b2292360Sliuzhongzhu buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL); 295b2292360Sliuzhongzhu if (!buf) 296b2292360Sliuzhongzhu return -ENOMEM; 297b2292360Sliuzhongzhu 298b2292360Sliuzhongzhu len = snprintf(buf, HNS3_DBG_READ_LEN, "%s\n", 299b2292360Sliuzhongzhu "Please echo help to cmd to get help information"); 300b2292360Sliuzhongzhu uncopy_bytes = copy_to_user(buffer, buf, len); 301b2292360Sliuzhongzhu 302b2292360Sliuzhongzhu kfree(buf); 303b2292360Sliuzhongzhu 304b2292360Sliuzhongzhu if (uncopy_bytes) 305b2292360Sliuzhongzhu return -EFAULT; 306b2292360Sliuzhongzhu 307b2292360Sliuzhongzhu return (*ppos = len); 308b2292360Sliuzhongzhu } 309b2292360Sliuzhongzhu 310b2292360Sliuzhongzhu static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer, 311b2292360Sliuzhongzhu size_t count, loff_t *ppos) 312b2292360Sliuzhongzhu { 313b2292360Sliuzhongzhu struct hnae3_handle *handle = filp->private_data; 31457ceee2cSliuzhongzhu struct hns3_nic_priv *priv = handle->priv; 315b2292360Sliuzhongzhu char *cmd_buf, *cmd_buf_tmp; 316b2292360Sliuzhongzhu int uncopied_bytes; 317b2292360Sliuzhongzhu int ret = 0; 318b2292360Sliuzhongzhu 319b2292360Sliuzhongzhu if (*ppos != 0) 320b2292360Sliuzhongzhu return 0; 321b2292360Sliuzhongzhu 32257ceee2cSliuzhongzhu /* Judge if the instance is being reset. */ 3237737f1fbSliuzhongzhu if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 32457ceee2cSliuzhongzhu test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 32557ceee2cSliuzhongzhu return 0; 32657ceee2cSliuzhongzhu 3277ac243f9SYufeng Mo if (count > HNS3_DBG_WRITE_LEN) 3287ac243f9SYufeng Mo return -ENOSPC; 3297ac243f9SYufeng Mo 330b2292360Sliuzhongzhu cmd_buf = kzalloc(count + 1, GFP_KERNEL); 331b2292360Sliuzhongzhu if (!cmd_buf) 332b2292360Sliuzhongzhu return count; 333b2292360Sliuzhongzhu 334b2292360Sliuzhongzhu uncopied_bytes = copy_from_user(cmd_buf, buffer, count); 335b2292360Sliuzhongzhu if (uncopied_bytes) { 336b2292360Sliuzhongzhu kfree(cmd_buf); 337b2292360Sliuzhongzhu return -EFAULT; 338b2292360Sliuzhongzhu } 339b2292360Sliuzhongzhu 340b2292360Sliuzhongzhu cmd_buf[count] = '\0'; 341b2292360Sliuzhongzhu 342b2292360Sliuzhongzhu cmd_buf_tmp = strchr(cmd_buf, '\n'); 343b2292360Sliuzhongzhu if (cmd_buf_tmp) { 344b2292360Sliuzhongzhu *cmd_buf_tmp = '\0'; 345b2292360Sliuzhongzhu count = cmd_buf_tmp - cmd_buf + 1; 346b2292360Sliuzhongzhu } 347b2292360Sliuzhongzhu 348b2292360Sliuzhongzhu if (strncmp(cmd_buf, "help", 4) == 0) 349b2292360Sliuzhongzhu hns3_dbg_help(handle); 35057ceee2cSliuzhongzhu else if (strncmp(cmd_buf, "queue info", 10) == 0) 35157ceee2cSliuzhongzhu ret = hns3_dbg_queue_info(handle, cmd_buf); 3520c29d191Sliuzhongzhu else if (strncmp(cmd_buf, "queue map", 9) == 0) 3530c29d191Sliuzhongzhu ret = hns3_dbg_queue_map(handle); 354122bedc5Sliuzhongzhu else if (strncmp(cmd_buf, "bd info", 7) == 0) 355122bedc5Sliuzhongzhu ret = hns3_dbg_bd_info(handle, cmd_buf); 3563c666b58Sliuzhongzhu else if (handle->ae_algo->ops->dbg_run_cmd) 3573c666b58Sliuzhongzhu ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf); 35897afd47bSYufeng Mo else 35997afd47bSYufeng Mo ret = -EOPNOTSUPP; 360b2292360Sliuzhongzhu 361b2292360Sliuzhongzhu if (ret) 362b2292360Sliuzhongzhu hns3_dbg_help(handle); 363b2292360Sliuzhongzhu 364b2292360Sliuzhongzhu kfree(cmd_buf); 365b2292360Sliuzhongzhu cmd_buf = NULL; 366b2292360Sliuzhongzhu 367b2292360Sliuzhongzhu return count; 368b2292360Sliuzhongzhu } 369b2292360Sliuzhongzhu 370b2292360Sliuzhongzhu static const struct file_operations hns3_dbg_cmd_fops = { 371b2292360Sliuzhongzhu .owner = THIS_MODULE, 372b2292360Sliuzhongzhu .open = simple_open, 373b2292360Sliuzhongzhu .read = hns3_dbg_cmd_read, 374b2292360Sliuzhongzhu .write = hns3_dbg_cmd_write, 375b2292360Sliuzhongzhu }; 376b2292360Sliuzhongzhu 377b2292360Sliuzhongzhu void hns3_dbg_init(struct hnae3_handle *handle) 378b2292360Sliuzhongzhu { 379b2292360Sliuzhongzhu const char *name = pci_name(handle->pdev); 380b2292360Sliuzhongzhu 381b2292360Sliuzhongzhu handle->hnae3_dbgfs = debugfs_create_dir(name, hns3_dbgfs_root); 382b2292360Sliuzhongzhu 38311ab11e6SGreg Kroah-Hartman debugfs_create_file("cmd", 0600, handle->hnae3_dbgfs, handle, 384b2292360Sliuzhongzhu &hns3_dbg_cmd_fops); 385b2292360Sliuzhongzhu } 386b2292360Sliuzhongzhu 387b2292360Sliuzhongzhu void hns3_dbg_uninit(struct hnae3_handle *handle) 388b2292360Sliuzhongzhu { 389b2292360Sliuzhongzhu debugfs_remove_recursive(handle->hnae3_dbgfs); 390b2292360Sliuzhongzhu handle->hnae3_dbgfs = NULL; 391b2292360Sliuzhongzhu } 392b2292360Sliuzhongzhu 393b2292360Sliuzhongzhu void hns3_dbg_register_debugfs(const char *debugfs_dir_name) 394b2292360Sliuzhongzhu { 395b2292360Sliuzhongzhu hns3_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL); 396b2292360Sliuzhongzhu } 397b2292360Sliuzhongzhu 398b2292360Sliuzhongzhu void hns3_dbg_unregister_debugfs(void) 399b2292360Sliuzhongzhu { 400b2292360Sliuzhongzhu debugfs_remove_recursive(hns3_dbgfs_root); 401b2292360Sliuzhongzhu hns3_dbgfs_root = NULL; 402b2292360Sliuzhongzhu } 403