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_enet_ring *ring; 2057ceee2cSliuzhongzhu u32 base_add_l, base_add_h; 2157ceee2cSliuzhongzhu u32 queue_num, queue_max; 2257ceee2cSliuzhongzhu u32 value, i = 0; 2357ceee2cSliuzhongzhu int cnt; 2457ceee2cSliuzhongzhu 255f06b903SYunsheng Lin if (!priv->ring) { 265f06b903SYunsheng Lin dev_err(&h->pdev->dev, "priv->ring is NULL\n"); 2757ceee2cSliuzhongzhu return -EFAULT; 2857ceee2cSliuzhongzhu } 2957ceee2cSliuzhongzhu 3057ceee2cSliuzhongzhu queue_max = h->kinfo.num_tqps; 3157ceee2cSliuzhongzhu cnt = kstrtouint(&cmd_buf[11], 0, &queue_num); 3257ceee2cSliuzhongzhu if (cnt) 3357ceee2cSliuzhongzhu queue_num = 0; 3457ceee2cSliuzhongzhu else 3557ceee2cSliuzhongzhu queue_max = queue_num + 1; 3657ceee2cSliuzhongzhu 3757ceee2cSliuzhongzhu dev_info(&h->pdev->dev, "queue info\n"); 3857ceee2cSliuzhongzhu 3957ceee2cSliuzhongzhu if (queue_num >= h->kinfo.num_tqps) { 4057ceee2cSliuzhongzhu dev_err(&h->pdev->dev, 41ed5b255bSYufeng Mo "Queue number(%u) is out of range(0-%u)\n", queue_num, 4257ceee2cSliuzhongzhu h->kinfo.num_tqps - 1); 4357ceee2cSliuzhongzhu return -EINVAL; 4457ceee2cSliuzhongzhu } 4557ceee2cSliuzhongzhu 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 555f06b903SYunsheng Lin ring = &priv->ring[(u32)(i + h->kinfo.num_tqps)]; 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); 60adcf738bSGuojia Liao dev_info(&h->pdev->dev, "RX(%u) 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); 65adcf738bSGuojia Liao dev_info(&h->pdev->dev, "RX(%u) RING BD NUM: %u\n", i, value); 6657ceee2cSliuzhongzhu 6757ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 6857ceee2cSliuzhongzhu HNS3_RING_RX_RING_BD_LEN_REG); 69adcf738bSGuojia Liao dev_info(&h->pdev->dev, "RX(%u) RING BD LEN: %u\n", i, value); 7057ceee2cSliuzhongzhu 7157ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 7257ceee2cSliuzhongzhu HNS3_RING_RX_RING_TAIL_REG); 73adcf738bSGuojia Liao dev_info(&h->pdev->dev, "RX(%u) RING TAIL: %u\n", i, value); 7457ceee2cSliuzhongzhu 7557ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 7657ceee2cSliuzhongzhu HNS3_RING_RX_RING_HEAD_REG); 77adcf738bSGuojia Liao dev_info(&h->pdev->dev, "RX(%u) RING HEAD: %u\n", i, value); 7857ceee2cSliuzhongzhu 7957ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 8057ceee2cSliuzhongzhu HNS3_RING_RX_RING_FBDNUM_REG); 81adcf738bSGuojia Liao dev_info(&h->pdev->dev, "RX(%u) RING FBDNUM: %u\n", i, value); 8257ceee2cSliuzhongzhu 8357ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 8457ceee2cSliuzhongzhu HNS3_RING_RX_RING_PKTNUM_RECORD_REG); 85adcf738bSGuojia Liao dev_info(&h->pdev->dev, "RX(%u) RING PKTNUM: %u\n", i, value); 8657ceee2cSliuzhongzhu 875f06b903SYunsheng Lin ring = &priv->ring[i]; 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); 92adcf738bSGuojia Liao dev_info(&h->pdev->dev, "TX(%u) 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); 97adcf738bSGuojia Liao dev_info(&h->pdev->dev, "TX(%u) RING BD NUM: %u\n", i, value); 9857ceee2cSliuzhongzhu 9957ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 10057ceee2cSliuzhongzhu HNS3_RING_TX_RING_TC_REG); 101adcf738bSGuojia Liao dev_info(&h->pdev->dev, "TX(%u) RING TC: %u\n", i, value); 10257ceee2cSliuzhongzhu 10357ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 10457ceee2cSliuzhongzhu HNS3_RING_TX_RING_TAIL_REG); 105adcf738bSGuojia Liao dev_info(&h->pdev->dev, "TX(%u) RING TAIL: %u\n", i, value); 10657ceee2cSliuzhongzhu 10757ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 10857ceee2cSliuzhongzhu HNS3_RING_TX_RING_HEAD_REG); 109adcf738bSGuojia Liao dev_info(&h->pdev->dev, "TX(%u) RING HEAD: %u\n", i, value); 11057ceee2cSliuzhongzhu 11157ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 11257ceee2cSliuzhongzhu HNS3_RING_TX_RING_FBDNUM_REG); 113adcf738bSGuojia Liao dev_info(&h->pdev->dev, "TX(%u) RING FBDNUM: %u\n", i, value); 11457ceee2cSliuzhongzhu 11557ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 11657ceee2cSliuzhongzhu HNS3_RING_TX_RING_OFFSET_REG); 117adcf738bSGuojia Liao dev_info(&h->pdev->dev, "TX(%u) RING OFFSET: %u\n", i, value); 11857ceee2cSliuzhongzhu 11957ceee2cSliuzhongzhu value = readl_relaxed(ring->tqp->io_base + 12057ceee2cSliuzhongzhu HNS3_RING_TX_RING_PKTNUM_RECORD_REG); 121adcf738bSGuojia Liao dev_info(&h->pdev->dev, "TX(%u) 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 int i; 1320c29d191Sliuzhongzhu 1330c29d191Sliuzhongzhu if (!h->ae_algo->ops->get_global_queue_id) 1340c29d191Sliuzhongzhu return -EOPNOTSUPP; 1350c29d191Sliuzhongzhu 1360c29d191Sliuzhongzhu dev_info(&h->pdev->dev, "map info for queue id and vector id\n"); 1370c29d191Sliuzhongzhu dev_info(&h->pdev->dev, 1380c29d191Sliuzhongzhu "local queue id | global queue id | vector id\n"); 1390c29d191Sliuzhongzhu for (i = 0; i < h->kinfo.num_tqps; i++) { 1400c29d191Sliuzhongzhu u16 global_qid; 1410c29d191Sliuzhongzhu 1420c29d191Sliuzhongzhu global_qid = h->ae_algo->ops->get_global_queue_id(h, i); 1435f06b903SYunsheng Lin if (!priv->ring || !priv->ring[i].tqp_vector) 1440c29d191Sliuzhongzhu continue; 1450c29d191Sliuzhongzhu 1460c29d191Sliuzhongzhu dev_info(&h->pdev->dev, 1470c29d191Sliuzhongzhu " %4d %4d %4d\n", 1485f06b903SYunsheng Lin i, global_qid, priv->ring[i].tqp_vector->vector_irq); 1490c29d191Sliuzhongzhu } 1500c29d191Sliuzhongzhu 1510c29d191Sliuzhongzhu return 0; 1520c29d191Sliuzhongzhu } 1530c29d191Sliuzhongzhu 154ebaf1908SWeihang Li static int hns3_dbg_bd_info(struct hnae3_handle *h, const char *cmd_buf) 155122bedc5Sliuzhongzhu { 156122bedc5Sliuzhongzhu struct hns3_nic_priv *priv = h->priv; 157122bedc5Sliuzhongzhu struct hns3_desc *rx_desc, *tx_desc; 158122bedc5Sliuzhongzhu struct device *dev = &h->pdev->dev; 159122bedc5Sliuzhongzhu struct hns3_enet_ring *ring; 160122bedc5Sliuzhongzhu u32 tx_index, rx_index; 161122bedc5Sliuzhongzhu u32 q_num, value; 16296e65abbSGuangbin Huang dma_addr_t addr; 163122bedc5Sliuzhongzhu int cnt; 164122bedc5Sliuzhongzhu 165122bedc5Sliuzhongzhu cnt = sscanf(&cmd_buf[8], "%u %u", &q_num, &tx_index); 166122bedc5Sliuzhongzhu if (cnt == 2) { 167122bedc5Sliuzhongzhu rx_index = tx_index; 168122bedc5Sliuzhongzhu } else if (cnt != 1) { 169122bedc5Sliuzhongzhu dev_err(dev, "bd info: bad command string, cnt=%d\n", cnt); 170122bedc5Sliuzhongzhu return -EINVAL; 171122bedc5Sliuzhongzhu } 172122bedc5Sliuzhongzhu 173122bedc5Sliuzhongzhu if (q_num >= h->kinfo.num_tqps) { 174ed5b255bSYufeng Mo dev_err(dev, "Queue number(%u) is out of range(0-%u)\n", q_num, 175122bedc5Sliuzhongzhu h->kinfo.num_tqps - 1); 176122bedc5Sliuzhongzhu return -EINVAL; 177122bedc5Sliuzhongzhu } 178122bedc5Sliuzhongzhu 1795f06b903SYunsheng Lin ring = &priv->ring[q_num]; 180122bedc5Sliuzhongzhu value = readl_relaxed(ring->tqp->io_base + HNS3_RING_TX_RING_TAIL_REG); 181122bedc5Sliuzhongzhu tx_index = (cnt == 1) ? value : tx_index; 182122bedc5Sliuzhongzhu 183122bedc5Sliuzhongzhu if (tx_index >= ring->desc_num) { 184ed5b255bSYufeng Mo dev_err(dev, "bd index(%u) is out of range(0-%u)\n", tx_index, 185122bedc5Sliuzhongzhu ring->desc_num - 1); 186122bedc5Sliuzhongzhu return -EINVAL; 187122bedc5Sliuzhongzhu } 188122bedc5Sliuzhongzhu 189122bedc5Sliuzhongzhu tx_desc = &ring->desc[tx_index]; 19096e65abbSGuangbin Huang addr = le64_to_cpu(tx_desc->addr); 191122bedc5Sliuzhongzhu dev_info(dev, "TX Queue Num: %u, BD Index: %u\n", q_num, tx_index); 19296e65abbSGuangbin Huang dev_info(dev, "(TX)addr: %pad\n", &addr); 19339edaf24SGuojia Liao dev_info(dev, "(TX)vlan_tag: %u\n", le16_to_cpu(tx_desc->tx.vlan_tag)); 19439edaf24SGuojia Liao dev_info(dev, "(TX)send_size: %u\n", 19539edaf24SGuojia Liao le16_to_cpu(tx_desc->tx.send_size)); 196122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_tso: %u\n", tx_desc->tx.type_cs_vlan_tso); 197122bedc5Sliuzhongzhu dev_info(dev, "(TX)l2_len: %u\n", tx_desc->tx.l2_len); 198122bedc5Sliuzhongzhu dev_info(dev, "(TX)l3_len: %u\n", tx_desc->tx.l3_len); 199122bedc5Sliuzhongzhu dev_info(dev, "(TX)l4_len: %u\n", tx_desc->tx.l4_len); 20039edaf24SGuojia Liao dev_info(dev, "(TX)vlan_tag: %u\n", 20139edaf24SGuojia Liao le16_to_cpu(tx_desc->tx.outer_vlan_tag)); 20239edaf24SGuojia Liao dev_info(dev, "(TX)tv: %u\n", le16_to_cpu(tx_desc->tx.tv)); 203122bedc5Sliuzhongzhu dev_info(dev, "(TX)vlan_msec: %u\n", tx_desc->tx.ol_type_vlan_msec); 204122bedc5Sliuzhongzhu dev_info(dev, "(TX)ol2_len: %u\n", tx_desc->tx.ol2_len); 205122bedc5Sliuzhongzhu dev_info(dev, "(TX)ol3_len: %u\n", tx_desc->tx.ol3_len); 206122bedc5Sliuzhongzhu dev_info(dev, "(TX)ol4_len: %u\n", tx_desc->tx.ol4_len); 20739edaf24SGuojia Liao dev_info(dev, "(TX)paylen: %u\n", le32_to_cpu(tx_desc->tx.paylen)); 20839edaf24SGuojia Liao dev_info(dev, "(TX)vld_ra_ri: %u\n", 20939edaf24SGuojia Liao le16_to_cpu(tx_desc->tx.bdtp_fe_sc_vld_ra_ri)); 21039edaf24SGuojia Liao dev_info(dev, "(TX)mss: %u\n", le16_to_cpu(tx_desc->tx.mss)); 211122bedc5Sliuzhongzhu 2125f06b903SYunsheng Lin ring = &priv->ring[q_num + h->kinfo.num_tqps]; 213122bedc5Sliuzhongzhu value = readl_relaxed(ring->tqp->io_base + HNS3_RING_RX_RING_TAIL_REG); 214122bedc5Sliuzhongzhu rx_index = (cnt == 1) ? value : tx_index; 215122bedc5Sliuzhongzhu rx_desc = &ring->desc[rx_index]; 216122bedc5Sliuzhongzhu 21796e65abbSGuangbin Huang addr = le64_to_cpu(rx_desc->addr); 218122bedc5Sliuzhongzhu dev_info(dev, "RX Queue Num: %u, BD Index: %u\n", q_num, rx_index); 21996e65abbSGuangbin Huang dev_info(dev, "(RX)addr: %pad\n", &addr); 22039edaf24SGuojia Liao dev_info(dev, "(RX)l234_info: %u\n", 22139edaf24SGuojia Liao le32_to_cpu(rx_desc->rx.l234_info)); 22239edaf24SGuojia Liao dev_info(dev, "(RX)pkt_len: %u\n", le16_to_cpu(rx_desc->rx.pkt_len)); 22339edaf24SGuojia Liao dev_info(dev, "(RX)size: %u\n", le16_to_cpu(rx_desc->rx.size)); 22439edaf24SGuojia Liao dev_info(dev, "(RX)rss_hash: %u\n", le32_to_cpu(rx_desc->rx.rss_hash)); 22539edaf24SGuojia Liao dev_info(dev, "(RX)fd_id: %u\n", le16_to_cpu(rx_desc->rx.fd_id)); 22639edaf24SGuojia Liao dev_info(dev, "(RX)vlan_tag: %u\n", le16_to_cpu(rx_desc->rx.vlan_tag)); 22739edaf24SGuojia Liao dev_info(dev, "(RX)o_dm_vlan_id_fb: %u\n", 22839edaf24SGuojia Liao le16_to_cpu(rx_desc->rx.o_dm_vlan_id_fb)); 22939edaf24SGuojia Liao dev_info(dev, "(RX)ot_vlan_tag: %u\n", 23039edaf24SGuojia Liao le16_to_cpu(rx_desc->rx.ot_vlan_tag)); 23139edaf24SGuojia Liao dev_info(dev, "(RX)bd_base_info: %u\n", 23239edaf24SGuojia Liao le32_to_cpu(rx_desc->rx.bd_base_info)); 233122bedc5Sliuzhongzhu 234122bedc5Sliuzhongzhu return 0; 235122bedc5Sliuzhongzhu } 236122bedc5Sliuzhongzhu 237b2292360Sliuzhongzhu static void hns3_dbg_help(struct hnae3_handle *h) 238b2292360Sliuzhongzhu { 23927cf979aSliuzhongzhu #define HNS3_DBG_BUF_LEN 256 24027cf979aSliuzhongzhu 24127cf979aSliuzhongzhu char printf_buf[HNS3_DBG_BUF_LEN]; 24227cf979aSliuzhongzhu 243b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "available commands\n"); 244ed5b255bSYufeng Mo dev_info(&h->pdev->dev, "queue info <number>\n"); 2450c29d191Sliuzhongzhu dev_info(&h->pdev->dev, "queue map\n"); 246ed5b255bSYufeng Mo dev_info(&h->pdev->dev, "bd info <q_num> <bd index>\n"); 24797afd47bSYufeng Mo 24897afd47bSYufeng Mo if (!hns3_is_phys_func(h->pdev)) 24997afd47bSYufeng Mo return; 25097afd47bSYufeng Mo 251b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "dump fd tcam\n"); 2522849d4e7Sliuzhongzhu dev_info(&h->pdev->dev, "dump tc\n"); 253ed5b255bSYufeng Mo dev_info(&h->pdev->dev, "dump tm map <q_num>\n"); 25496227f4cSliuzhongzhu dev_info(&h->pdev->dev, "dump tm\n"); 255d958919dSliuzhongzhu dev_info(&h->pdev->dev, "dump qos pause cfg\n"); 2566fc22440Sliuzhongzhu dev_info(&h->pdev->dev, "dump qos pri map\n"); 2577d9d7f88Sliuzhongzhu dev_info(&h->pdev->dev, "dump qos buf cfg\n"); 2587737f1fbSliuzhongzhu dev_info(&h->pdev->dev, "dump mng tbl\n"); 259f02eb82dSHuazhong Tan dev_info(&h->pdev->dev, "dump reset info\n"); 26033a90e2fSZhongzhu Liu dev_info(&h->pdev->dev, "dump m7 info\n"); 261ffd140e2SWeihang Li dev_info(&h->pdev->dev, "dump ncl_config <offset> <length>(in hex)\n"); 262a6345787SWeihang Li dev_info(&h->pdev->dev, "dump mac tnl status\n"); 263ded45d40SYufeng Mo dev_info(&h->pdev->dev, "dump loopback\n"); 26489ec9485SYonglong Liu dev_info(&h->pdev->dev, "dump qs shaper [qs id]\n"); 26527cf979aSliuzhongzhu 26627cf979aSliuzhongzhu memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 267ed5b255bSYufeng Mo strncat(printf_buf, "dump reg [[bios common] [ssu <port_id>]", 26827cf979aSliuzhongzhu HNS3_DBG_BUF_LEN - 1); 26927cf979aSliuzhongzhu strncat(printf_buf + strlen(printf_buf), 270ed5b255bSYufeng Mo " [igu egu <port_id>] [rpu <tc_queue_num>]", 27127cf979aSliuzhongzhu HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 27227cf979aSliuzhongzhu strncat(printf_buf + strlen(printf_buf), 273ed5b255bSYufeng Mo " [rtc] [ppp] [rcb] [tqp <queue_num>]]\n", 27427cf979aSliuzhongzhu HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 27527cf979aSliuzhongzhu dev_info(&h->pdev->dev, "%s", printf_buf); 276c0ebebb9Sliuzhongzhu 277c0ebebb9Sliuzhongzhu memset(printf_buf, 0, HNS3_DBG_BUF_LEN); 278ed5b255bSYufeng Mo strncat(printf_buf, "dump reg dcb <port_id> <pri_id> <pg_id>", 279c0ebebb9Sliuzhongzhu HNS3_DBG_BUF_LEN - 1); 280ed5b255bSYufeng Mo strncat(printf_buf + strlen(printf_buf), " <rq_id> <nq_id> <qset_id>\n", 281c0ebebb9Sliuzhongzhu HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1); 282c0ebebb9Sliuzhongzhu dev_info(&h->pdev->dev, "%s", printf_buf); 283b2292360Sliuzhongzhu } 284b2292360Sliuzhongzhu 285b2292360Sliuzhongzhu static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer, 286b2292360Sliuzhongzhu size_t count, loff_t *ppos) 287b2292360Sliuzhongzhu { 288b2292360Sliuzhongzhu int uncopy_bytes; 289b2292360Sliuzhongzhu char *buf; 290b2292360Sliuzhongzhu int len; 291b2292360Sliuzhongzhu 292b2292360Sliuzhongzhu if (*ppos != 0) 293b2292360Sliuzhongzhu return 0; 294b2292360Sliuzhongzhu 295b2292360Sliuzhongzhu if (count < HNS3_DBG_READ_LEN) 296b2292360Sliuzhongzhu return -ENOSPC; 297b2292360Sliuzhongzhu 298b2292360Sliuzhongzhu buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL); 299b2292360Sliuzhongzhu if (!buf) 300b2292360Sliuzhongzhu return -ENOMEM; 301b2292360Sliuzhongzhu 30249e211c0SChen Zhou len = scnprintf(buf, HNS3_DBG_READ_LEN, "%s\n", 303b2292360Sliuzhongzhu "Please echo help to cmd to get help information"); 304b2292360Sliuzhongzhu uncopy_bytes = copy_to_user(buffer, buf, len); 305b2292360Sliuzhongzhu 306b2292360Sliuzhongzhu kfree(buf); 307b2292360Sliuzhongzhu 308b2292360Sliuzhongzhu if (uncopy_bytes) 309b2292360Sliuzhongzhu return -EFAULT; 310b2292360Sliuzhongzhu 311b2292360Sliuzhongzhu return (*ppos = len); 312b2292360Sliuzhongzhu } 313b2292360Sliuzhongzhu 314b2292360Sliuzhongzhu static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer, 315b2292360Sliuzhongzhu size_t count, loff_t *ppos) 316b2292360Sliuzhongzhu { 317b2292360Sliuzhongzhu struct hnae3_handle *handle = filp->private_data; 31857ceee2cSliuzhongzhu struct hns3_nic_priv *priv = handle->priv; 319b2292360Sliuzhongzhu char *cmd_buf, *cmd_buf_tmp; 320b2292360Sliuzhongzhu int uncopied_bytes; 321b2292360Sliuzhongzhu int ret = 0; 322b2292360Sliuzhongzhu 323b2292360Sliuzhongzhu if (*ppos != 0) 324b2292360Sliuzhongzhu return 0; 325b2292360Sliuzhongzhu 32657ceee2cSliuzhongzhu /* Judge if the instance is being reset. */ 3277737f1fbSliuzhongzhu if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 32857ceee2cSliuzhongzhu test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 32957ceee2cSliuzhongzhu return 0; 33057ceee2cSliuzhongzhu 3317ac243f9SYufeng Mo if (count > HNS3_DBG_WRITE_LEN) 3327ac243f9SYufeng Mo return -ENOSPC; 3337ac243f9SYufeng Mo 334b2292360Sliuzhongzhu cmd_buf = kzalloc(count + 1, GFP_KERNEL); 335b2292360Sliuzhongzhu if (!cmd_buf) 336b2292360Sliuzhongzhu return count; 337b2292360Sliuzhongzhu 338b2292360Sliuzhongzhu uncopied_bytes = copy_from_user(cmd_buf, buffer, count); 339b2292360Sliuzhongzhu if (uncopied_bytes) { 340b2292360Sliuzhongzhu kfree(cmd_buf); 341b2292360Sliuzhongzhu return -EFAULT; 342b2292360Sliuzhongzhu } 343b2292360Sliuzhongzhu 344b2292360Sliuzhongzhu cmd_buf[count] = '\0'; 345b2292360Sliuzhongzhu 346b2292360Sliuzhongzhu cmd_buf_tmp = strchr(cmd_buf, '\n'); 347b2292360Sliuzhongzhu if (cmd_buf_tmp) { 348b2292360Sliuzhongzhu *cmd_buf_tmp = '\0'; 349b2292360Sliuzhongzhu count = cmd_buf_tmp - cmd_buf + 1; 350b2292360Sliuzhongzhu } 351b2292360Sliuzhongzhu 352b2292360Sliuzhongzhu if (strncmp(cmd_buf, "help", 4) == 0) 353b2292360Sliuzhongzhu hns3_dbg_help(handle); 35457ceee2cSliuzhongzhu else if (strncmp(cmd_buf, "queue info", 10) == 0) 35557ceee2cSliuzhongzhu ret = hns3_dbg_queue_info(handle, cmd_buf); 3560c29d191Sliuzhongzhu else if (strncmp(cmd_buf, "queue map", 9) == 0) 3570c29d191Sliuzhongzhu ret = hns3_dbg_queue_map(handle); 358122bedc5Sliuzhongzhu else if (strncmp(cmd_buf, "bd info", 7) == 0) 359122bedc5Sliuzhongzhu ret = hns3_dbg_bd_info(handle, cmd_buf); 3603c666b58Sliuzhongzhu else if (handle->ae_algo->ops->dbg_run_cmd) 3613c666b58Sliuzhongzhu ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf); 36297afd47bSYufeng Mo else 36397afd47bSYufeng Mo ret = -EOPNOTSUPP; 364b2292360Sliuzhongzhu 365b2292360Sliuzhongzhu if (ret) 366b2292360Sliuzhongzhu hns3_dbg_help(handle); 367b2292360Sliuzhongzhu 368b2292360Sliuzhongzhu kfree(cmd_buf); 369b2292360Sliuzhongzhu cmd_buf = NULL; 370b2292360Sliuzhongzhu 371b2292360Sliuzhongzhu return count; 372b2292360Sliuzhongzhu } 373b2292360Sliuzhongzhu 374b2292360Sliuzhongzhu static const struct file_operations hns3_dbg_cmd_fops = { 375b2292360Sliuzhongzhu .owner = THIS_MODULE, 376b2292360Sliuzhongzhu .open = simple_open, 377b2292360Sliuzhongzhu .read = hns3_dbg_cmd_read, 378b2292360Sliuzhongzhu .write = hns3_dbg_cmd_write, 379b2292360Sliuzhongzhu }; 380b2292360Sliuzhongzhu 381b2292360Sliuzhongzhu void hns3_dbg_init(struct hnae3_handle *handle) 382b2292360Sliuzhongzhu { 383b2292360Sliuzhongzhu const char *name = pci_name(handle->pdev); 384b2292360Sliuzhongzhu 385b2292360Sliuzhongzhu handle->hnae3_dbgfs = debugfs_create_dir(name, hns3_dbgfs_root); 386b2292360Sliuzhongzhu 38711ab11e6SGreg Kroah-Hartman debugfs_create_file("cmd", 0600, handle->hnae3_dbgfs, handle, 388b2292360Sliuzhongzhu &hns3_dbg_cmd_fops); 389b2292360Sliuzhongzhu } 390b2292360Sliuzhongzhu 391b2292360Sliuzhongzhu void hns3_dbg_uninit(struct hnae3_handle *handle) 392b2292360Sliuzhongzhu { 393b2292360Sliuzhongzhu debugfs_remove_recursive(handle->hnae3_dbgfs); 394b2292360Sliuzhongzhu handle->hnae3_dbgfs = NULL; 395b2292360Sliuzhongzhu } 396b2292360Sliuzhongzhu 397b2292360Sliuzhongzhu void hns3_dbg_register_debugfs(const char *debugfs_dir_name) 398b2292360Sliuzhongzhu { 399b2292360Sliuzhongzhu hns3_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL); 400b2292360Sliuzhongzhu } 401b2292360Sliuzhongzhu 402b2292360Sliuzhongzhu void hns3_dbg_unregister_debugfs(void) 403b2292360Sliuzhongzhu { 404b2292360Sliuzhongzhu debugfs_remove_recursive(hns3_dbgfs_root); 405b2292360Sliuzhongzhu hns3_dbgfs_root = NULL; 406b2292360Sliuzhongzhu } 407