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 */ 5157ceee2cSliuzhongzhu if (test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 5257ceee2cSliuzhongzhu test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 5357ceee2cSliuzhongzhu return -EPERM; 5457ceee2cSliuzhongzhu 5557ceee2cSliuzhongzhu ring = ring_data[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 128b2292360Sliuzhongzhu static void hns3_dbg_help(struct hnae3_handle *h) 129b2292360Sliuzhongzhu { 130b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "available commands\n"); 131b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "queue info [number]\n"); 132b2292360Sliuzhongzhu dev_info(&h->pdev->dev, "dump fd tcam\n"); 133b2292360Sliuzhongzhu } 134b2292360Sliuzhongzhu 135b2292360Sliuzhongzhu static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer, 136b2292360Sliuzhongzhu size_t count, loff_t *ppos) 137b2292360Sliuzhongzhu { 138b2292360Sliuzhongzhu int uncopy_bytes; 139b2292360Sliuzhongzhu char *buf; 140b2292360Sliuzhongzhu int len; 141b2292360Sliuzhongzhu 142b2292360Sliuzhongzhu if (*ppos != 0) 143b2292360Sliuzhongzhu return 0; 144b2292360Sliuzhongzhu 145b2292360Sliuzhongzhu if (count < HNS3_DBG_READ_LEN) 146b2292360Sliuzhongzhu return -ENOSPC; 147b2292360Sliuzhongzhu 148b2292360Sliuzhongzhu buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL); 149b2292360Sliuzhongzhu if (!buf) 150b2292360Sliuzhongzhu return -ENOMEM; 151b2292360Sliuzhongzhu 152b2292360Sliuzhongzhu len = snprintf(buf, HNS3_DBG_READ_LEN, "%s\n", 153b2292360Sliuzhongzhu "Please echo help to cmd to get help information"); 154b2292360Sliuzhongzhu uncopy_bytes = copy_to_user(buffer, buf, len); 155b2292360Sliuzhongzhu 156b2292360Sliuzhongzhu kfree(buf); 157b2292360Sliuzhongzhu 158b2292360Sliuzhongzhu if (uncopy_bytes) 159b2292360Sliuzhongzhu return -EFAULT; 160b2292360Sliuzhongzhu 161b2292360Sliuzhongzhu return (*ppos = len); 162b2292360Sliuzhongzhu } 163b2292360Sliuzhongzhu 164b2292360Sliuzhongzhu static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer, 165b2292360Sliuzhongzhu size_t count, loff_t *ppos) 166b2292360Sliuzhongzhu { 167b2292360Sliuzhongzhu struct hnae3_handle *handle = filp->private_data; 16857ceee2cSliuzhongzhu struct hns3_nic_priv *priv = handle->priv; 169b2292360Sliuzhongzhu char *cmd_buf, *cmd_buf_tmp; 170b2292360Sliuzhongzhu int uncopied_bytes; 171b2292360Sliuzhongzhu int ret = 0; 172b2292360Sliuzhongzhu 173b2292360Sliuzhongzhu if (*ppos != 0) 174b2292360Sliuzhongzhu return 0; 175b2292360Sliuzhongzhu 17657ceee2cSliuzhongzhu /* Judge if the instance is being reset. */ 17757ceee2cSliuzhongzhu if (test_bit(HNS3_NIC_STATE_INITED, &priv->state) || 17857ceee2cSliuzhongzhu test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) 17957ceee2cSliuzhongzhu return 0; 18057ceee2cSliuzhongzhu 181b2292360Sliuzhongzhu cmd_buf = kzalloc(count + 1, GFP_KERNEL); 182b2292360Sliuzhongzhu if (!cmd_buf) 183b2292360Sliuzhongzhu return count; 184b2292360Sliuzhongzhu 185b2292360Sliuzhongzhu uncopied_bytes = copy_from_user(cmd_buf, buffer, count); 186b2292360Sliuzhongzhu if (uncopied_bytes) { 187b2292360Sliuzhongzhu kfree(cmd_buf); 188b2292360Sliuzhongzhu return -EFAULT; 189b2292360Sliuzhongzhu } 190b2292360Sliuzhongzhu 191b2292360Sliuzhongzhu cmd_buf[count] = '\0'; 192b2292360Sliuzhongzhu 193b2292360Sliuzhongzhu cmd_buf_tmp = strchr(cmd_buf, '\n'); 194b2292360Sliuzhongzhu if (cmd_buf_tmp) { 195b2292360Sliuzhongzhu *cmd_buf_tmp = '\0'; 196b2292360Sliuzhongzhu count = cmd_buf_tmp - cmd_buf + 1; 197b2292360Sliuzhongzhu } 198b2292360Sliuzhongzhu 199b2292360Sliuzhongzhu if (strncmp(cmd_buf, "help", 4) == 0) 200b2292360Sliuzhongzhu hns3_dbg_help(handle); 20157ceee2cSliuzhongzhu else if (strncmp(cmd_buf, "queue info", 10) == 0) 20257ceee2cSliuzhongzhu ret = hns3_dbg_queue_info(handle, cmd_buf); 2033c666b58Sliuzhongzhu else if (handle->ae_algo->ops->dbg_run_cmd) 2043c666b58Sliuzhongzhu ret = handle->ae_algo->ops->dbg_run_cmd(handle, cmd_buf); 205b2292360Sliuzhongzhu 206b2292360Sliuzhongzhu if (ret) 207b2292360Sliuzhongzhu hns3_dbg_help(handle); 208b2292360Sliuzhongzhu 209b2292360Sliuzhongzhu kfree(cmd_buf); 210b2292360Sliuzhongzhu cmd_buf = NULL; 211b2292360Sliuzhongzhu 212b2292360Sliuzhongzhu return count; 213b2292360Sliuzhongzhu } 214b2292360Sliuzhongzhu 215b2292360Sliuzhongzhu static const struct file_operations hns3_dbg_cmd_fops = { 216b2292360Sliuzhongzhu .owner = THIS_MODULE, 217b2292360Sliuzhongzhu .open = simple_open, 218b2292360Sliuzhongzhu .read = hns3_dbg_cmd_read, 219b2292360Sliuzhongzhu .write = hns3_dbg_cmd_write, 220b2292360Sliuzhongzhu }; 221b2292360Sliuzhongzhu 222b2292360Sliuzhongzhu void hns3_dbg_init(struct hnae3_handle *handle) 223b2292360Sliuzhongzhu { 224b2292360Sliuzhongzhu const char *name = pci_name(handle->pdev); 225b2292360Sliuzhongzhu struct dentry *pfile; 226b2292360Sliuzhongzhu 227b2292360Sliuzhongzhu handle->hnae3_dbgfs = debugfs_create_dir(name, hns3_dbgfs_root); 228b2292360Sliuzhongzhu if (!handle->hnae3_dbgfs) 229b2292360Sliuzhongzhu return; 230b2292360Sliuzhongzhu 231b2292360Sliuzhongzhu pfile = debugfs_create_file("cmd", 0600, handle->hnae3_dbgfs, handle, 232b2292360Sliuzhongzhu &hns3_dbg_cmd_fops); 233b2292360Sliuzhongzhu if (!pfile) { 234b2292360Sliuzhongzhu debugfs_remove_recursive(handle->hnae3_dbgfs); 235b2292360Sliuzhongzhu handle->hnae3_dbgfs = NULL; 236b2292360Sliuzhongzhu dev_warn(&handle->pdev->dev, "create file for %s fail\n", 237b2292360Sliuzhongzhu name); 238b2292360Sliuzhongzhu } 239b2292360Sliuzhongzhu } 240b2292360Sliuzhongzhu 241b2292360Sliuzhongzhu void hns3_dbg_uninit(struct hnae3_handle *handle) 242b2292360Sliuzhongzhu { 243b2292360Sliuzhongzhu debugfs_remove_recursive(handle->hnae3_dbgfs); 244b2292360Sliuzhongzhu handle->hnae3_dbgfs = NULL; 245b2292360Sliuzhongzhu } 246b2292360Sliuzhongzhu 247b2292360Sliuzhongzhu void hns3_dbg_register_debugfs(const char *debugfs_dir_name) 248b2292360Sliuzhongzhu { 249b2292360Sliuzhongzhu hns3_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL); 250b2292360Sliuzhongzhu if (!hns3_dbgfs_root) { 251b2292360Sliuzhongzhu pr_warn("Register debugfs for %s fail\n", debugfs_dir_name); 252b2292360Sliuzhongzhu return; 253b2292360Sliuzhongzhu } 254b2292360Sliuzhongzhu } 255b2292360Sliuzhongzhu 256b2292360Sliuzhongzhu void hns3_dbg_unregister_debugfs(void) 257b2292360Sliuzhongzhu { 258b2292360Sliuzhongzhu debugfs_remove_recursive(hns3_dbgfs_root); 259b2292360Sliuzhongzhu hns3_dbgfs_root = NULL; 260b2292360Sliuzhongzhu } 261