Commit 3b44c793 authored by David S. Miller's avatar David S. Miller

Merge branch 'hinic-add-debugfs-support'

Luo bin says:

====================
hinic: add debugfs support

add debugfs node for querying sq/rq info and function table
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents c30a3c95 5215e162
......@@ -4,4 +4,5 @@ obj-$(CONFIG_HINIC) += hinic.o
hinic-y := hinic_main.o hinic_tx.o hinic_rx.o hinic_port.o hinic_hw_dev.o \
hinic_hw_io.o hinic_hw_qp.o hinic_hw_cmdq.o hinic_hw_wq.o \
hinic_hw_mgmt.o hinic_hw_api_cmd.o hinic_hw_eqs.o hinic_hw_if.o \
hinic_common.o hinic_ethtool.o hinic_devlink.o hinic_hw_mbox.o hinic_sriov.o
hinic_common.o hinic_ethtool.o hinic_devlink.o hinic_hw_mbox.o \
hinic_sriov.o hinic_debugfs.o
// SPDX-License-Identifier: GPL-2.0-only
/* Huawei HiNIC PCI Express Linux driver
* Copyright(c) 2017 Huawei Technologies Co., Ltd
*/
#include <linux/debugfs.h>
#include <linux/device.h>
#include "hinic_debugfs.h"
static struct dentry *hinic_dbgfs_root;
enum sq_dbg_info {
GLB_SQ_ID,
SQ_PI,
SQ_CI,
SQ_FI,
SQ_MSIX_ENTRY,
};
static char *sq_fields[] = {"glb_sq_id", "sq_pi", "sq_ci", "sq_fi", "sq_msix_entry"};
static u64 hinic_dbg_get_sq_info(struct hinic_dev *nic_dev, struct hinic_sq *sq, int idx)
{
struct hinic_wq *wq = sq->wq;
switch (idx) {
case GLB_SQ_ID:
return nic_dev->hwdev->func_to_io.global_qpn + sq->qid;
case SQ_PI:
return atomic_read(&wq->prod_idx) & wq->mask;
case SQ_CI:
return atomic_read(&wq->cons_idx) & wq->mask;
case SQ_FI:
return be16_to_cpu(*(__be16 *)(sq->hw_ci_addr)) & wq->mask;
case SQ_MSIX_ENTRY:
return sq->msix_entry;
}
return 0;
}
enum rq_dbg_info {
GLB_RQ_ID,
RQ_HW_PI,
RQ_SW_CI,
RQ_SW_PI,
RQ_MSIX_ENTRY,
};
static char *rq_fields[] = {"glb_rq_id", "rq_hw_pi", "rq_sw_ci", "rq_sw_pi", "rq_msix_entry"};
static u64 hinic_dbg_get_rq_info(struct hinic_dev *nic_dev, struct hinic_rq *rq, int idx)
{
struct hinic_wq *wq = rq->wq;
switch (idx) {
case GLB_RQ_ID:
return nic_dev->hwdev->func_to_io.global_qpn + rq->qid;
case RQ_HW_PI:
return be16_to_cpu(*(__be16 *)(rq->pi_virt_addr)) & wq->mask;
case RQ_SW_CI:
return atomic_read(&wq->cons_idx) & wq->mask;
case RQ_SW_PI:
return atomic_read(&wq->prod_idx) & wq->mask;
case RQ_MSIX_ENTRY:
return rq->msix_entry;
}
return 0;
}
enum func_tbl_info {
VALID,
RX_MODE,
MTU,
RQ_DEPTH,
QUEUE_NUM,
};
static char *func_table_fields[] = {"valid", "rx_mode", "mtu", "rq_depth", "cfg_q_num"};
static int hinic_dbg_get_func_table(struct hinic_dev *nic_dev, int idx)
{
struct tag_sml_funcfg_tbl *funcfg_table_elem;
struct hinic_cmd_lt_rd *read_data;
u16 out_size = sizeof(*read_data);
int err;
read_data = kzalloc(sizeof(*read_data), GFP_KERNEL);
if (!read_data)
return ~0;
read_data->node = TBL_ID_FUNC_CFG_SM_NODE;
read_data->inst = TBL_ID_FUNC_CFG_SM_INST;
read_data->entry_size = HINIC_FUNCTION_CONFIGURE_TABLE_SIZE;
read_data->lt_index = HINIC_HWIF_FUNC_IDX(nic_dev->hwdev->hwif);
read_data->len = HINIC_FUNCTION_CONFIGURE_TABLE_SIZE;
err = hinic_port_msg_cmd(nic_dev->hwdev, HINIC_PORT_CMD_RD_LINE_TBL, read_data,
sizeof(*read_data), read_data, &out_size);
if (err || out_size != sizeof(*read_data) || read_data->status) {
netif_err(nic_dev, drv, nic_dev->netdev,
"Failed to get func table, err: %d, status: 0x%x, out size: 0x%x\n",
err, read_data->status, out_size);
kfree(read_data);
return ~0;
}
funcfg_table_elem = (struct tag_sml_funcfg_tbl *)read_data->data;
switch (idx) {
case VALID:
return funcfg_table_elem->dw0.bs.valid;
case RX_MODE:
return funcfg_table_elem->dw0.bs.nic_rx_mode;
case MTU:
return funcfg_table_elem->dw1.bs.mtu;
case RQ_DEPTH:
return funcfg_table_elem->dw13.bs.cfg_rq_depth;
case QUEUE_NUM:
return funcfg_table_elem->dw13.bs.cfg_q_num;
}
kfree(read_data);
return ~0;
}
static ssize_t hinic_dbg_cmd_read(struct file *filp, char __user *buffer, size_t count,
loff_t *ppos)
{
struct hinic_debug_priv *dbg;
char ret_buf[20];
int *desc;
u64 out;
int ret;
desc = filp->private_data;
dbg = container_of(desc, struct hinic_debug_priv, field_id[*desc]);
switch (dbg->type) {
case HINIC_DBG_SQ_INFO:
out = hinic_dbg_get_sq_info(dbg->dev, dbg->object, *desc);
break;
case HINIC_DBG_RQ_INFO:
out = hinic_dbg_get_rq_info(dbg->dev, dbg->object, *desc);
break;
case HINIC_DBG_FUNC_TABLE:
out = hinic_dbg_get_func_table(dbg->dev, *desc);
break;
default:
netif_warn(dbg->dev, drv, dbg->dev->netdev, "Invalid hinic debug cmd: %d\n",
dbg->type);
return -EINVAL;
}
ret = snprintf(ret_buf, sizeof(ret_buf), "0x%llx\n", out);
return simple_read_from_buffer(buffer, count, ppos, ret_buf, ret);
}
static const struct file_operations hinic_dbg_cmd_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = hinic_dbg_cmd_read,
};
static int create_dbg_files(struct hinic_dev *dev, enum hinic_dbg_type type, void *data,
struct dentry *root, struct hinic_debug_priv **dbg, char **field,
int nfile)
{
struct hinic_debug_priv *tmp;
int i;
tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
if (!tmp)
return -ENOMEM;
tmp->dev = dev;
tmp->object = data;
tmp->type = type;
tmp->root = root;
for (i = 0; i < nfile; i++) {
tmp->field_id[i] = i;
debugfs_create_file(field[i], 0400, root, &tmp->field_id[i], &hinic_dbg_cmd_fops);
}
*dbg = tmp;
return 0;
}
static void rem_dbg_files(struct hinic_debug_priv *dbg)
{
if (dbg->type != HINIC_DBG_FUNC_TABLE)
debugfs_remove_recursive(dbg->root);
kfree(dbg);
}
int hinic_sq_debug_add(struct hinic_dev *dev, u16 sq_id)
{
struct hinic_sq *sq;
struct dentry *root;
char sub_dir[16];
sq = dev->txqs[sq_id].sq;
sprintf(sub_dir, "0x%x", sq_id);
root = debugfs_create_dir(sub_dir, dev->sq_dbgfs);
return create_dbg_files(dev, HINIC_DBG_SQ_INFO, sq, root, &sq->dbg, sq_fields,
ARRAY_SIZE(sq_fields));
}
void hinic_sq_debug_rem(struct hinic_sq *sq)
{
if (sq->dbg)
rem_dbg_files(sq->dbg);
}
int hinic_rq_debug_add(struct hinic_dev *dev, u16 rq_id)
{
struct hinic_rq *rq;
struct dentry *root;
char sub_dir[16];
rq = dev->rxqs[rq_id].rq;
sprintf(sub_dir, "0x%x", rq_id);
root = debugfs_create_dir(sub_dir, dev->rq_dbgfs);
return create_dbg_files(dev, HINIC_DBG_RQ_INFO, rq, root, &rq->dbg, rq_fields,
ARRAY_SIZE(rq_fields));
}
void hinic_rq_debug_rem(struct hinic_rq *rq)
{
if (rq->dbg)
rem_dbg_files(rq->dbg);
}
int hinic_func_table_debug_add(struct hinic_dev *dev)
{
if (HINIC_IS_VF(dev->hwdev->hwif))
return 0;
return create_dbg_files(dev, HINIC_DBG_FUNC_TABLE, dev, dev->func_tbl_dbgfs, &dev->dbg,
func_table_fields, ARRAY_SIZE(func_table_fields));
}
void hinic_func_table_debug_rem(struct hinic_dev *dev)
{
if (!HINIC_IS_VF(dev->hwdev->hwif) && dev->dbg)
rem_dbg_files(dev->dbg);
}
void hinic_sq_dbgfs_init(struct hinic_dev *nic_dev)
{
nic_dev->sq_dbgfs = debugfs_create_dir("SQs", nic_dev->dbgfs_root);
}
void hinic_sq_dbgfs_uninit(struct hinic_dev *nic_dev)
{
debugfs_remove_recursive(nic_dev->sq_dbgfs);
}
void hinic_rq_dbgfs_init(struct hinic_dev *nic_dev)
{
nic_dev->rq_dbgfs = debugfs_create_dir("RQs", nic_dev->dbgfs_root);
}
void hinic_rq_dbgfs_uninit(struct hinic_dev *nic_dev)
{
debugfs_remove_recursive(nic_dev->rq_dbgfs);
}
void hinic_func_tbl_dbgfs_init(struct hinic_dev *nic_dev)
{
if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
nic_dev->func_tbl_dbgfs = debugfs_create_dir("func_table", nic_dev->dbgfs_root);
}
void hinic_func_tbl_dbgfs_uninit(struct hinic_dev *nic_dev)
{
if (!HINIC_IS_VF(nic_dev->hwdev->hwif))
debugfs_remove_recursive(nic_dev->func_tbl_dbgfs);
}
void hinic_dbg_init(struct hinic_dev *nic_dev)
{
nic_dev->dbgfs_root = debugfs_create_dir(pci_name(nic_dev->hwdev->hwif->pdev),
hinic_dbgfs_root);
}
void hinic_dbg_uninit(struct hinic_dev *nic_dev)
{
debugfs_remove_recursive(nic_dev->dbgfs_root);
nic_dev->dbgfs_root = NULL;
}
void hinic_dbg_register_debugfs(const char *debugfs_dir_name)
{
hinic_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL);
}
void hinic_dbg_unregister_debugfs(void)
{
debugfs_remove_recursive(hinic_dbgfs_root);
hinic_dbgfs_root = NULL;
}
/* SPDX-License-Identifier: GPL-2.0-only */
/* Huawei HiNIC PCI Express Linux driver
* Copyright(c) 2017 Huawei Technologies Co., Ltd
*/
#ifndef HINIC_DEBUGFS_H
#define HINIC_DEBUGFS_H
#include "hinic_dev.h"
#define TBL_ID_FUNC_CFG_SM_NODE 11
#define TBL_ID_FUNC_CFG_SM_INST 1
#define HINIC_FUNCTION_CONFIGURE_TABLE_SIZE 64
#define HINIC_FUNCTION_CONFIGURE_TABLE 1
struct hinic_cmd_lt_rd {
u8 status;
u8 version;
u8 rsvd0[6];
unsigned char node;
unsigned char inst;
unsigned char entry_size;
unsigned char rsvd;
unsigned int lt_index;
unsigned int offset;
unsigned int len;
unsigned char data[100];
};
struct tag_sml_funcfg_tbl {
union {
struct {
u32 rsvd0 :8;
u32 nic_rx_mode :5;
u32 rsvd1 :18;
u32 valid :1;
} bs;
u32 value;
} dw0;
union {
struct {
u32 vlan_id :12;
u32 vlan_mode :3;
u32 fast_recycled_mode :1;
u32 mtu :16;
} bs;
u32 value;
} dw1;
u32 dw2;
u32 dw3;
u32 dw4;
u32 dw5;
u32 dw6;
u32 dw7;
u32 dw8;
u32 dw9;
u32 dw10;
u32 dw11;
u32 dw12;
union {
struct {
u32 rsvd2 :15;
u32 cfg_q_num :9;
u32 cfg_rq_depth :6;
u32 vhd_type :2;
} bs;
u32 value;
} dw13;
u32 dw14;
u32 dw15;
};
int hinic_sq_debug_add(struct hinic_dev *dev, u16 sq_id);
void hinic_sq_debug_rem(struct hinic_sq *sq);
int hinic_rq_debug_add(struct hinic_dev *dev, u16 rq_id);
void hinic_rq_debug_rem(struct hinic_rq *rq);
int hinic_func_table_debug_add(struct hinic_dev *dev);
void hinic_func_table_debug_rem(struct hinic_dev *dev);
void hinic_sq_dbgfs_init(struct hinic_dev *nic_dev);
void hinic_sq_dbgfs_uninit(struct hinic_dev *nic_dev);
void hinic_rq_dbgfs_init(struct hinic_dev *nic_dev);
void hinic_rq_dbgfs_uninit(struct hinic_dev *nic_dev);
void hinic_func_tbl_dbgfs_init(struct hinic_dev *nic_dev);
void hinic_func_tbl_dbgfs_uninit(struct hinic_dev *nic_dev);
void hinic_dbg_init(struct hinic_dev *nic_dev);
void hinic_dbg_uninit(struct hinic_dev *nic_dev);
void hinic_dbg_register_debugfs(const char *debugfs_dir_name);
void hinic_dbg_unregister_debugfs(void);
#endif
......@@ -58,6 +58,20 @@ struct hinic_intr_coal_info {
u8 resend_timer_cfg;
};
enum hinic_dbg_type {
HINIC_DBG_SQ_INFO,
HINIC_DBG_RQ_INFO,
HINIC_DBG_FUNC_TABLE,
};
struct hinic_debug_priv {
struct hinic_dev *dev;
void *object;
enum hinic_dbg_type type;
struct dentry *root;
int field_id[64];
};
struct hinic_dev {
struct net_device *netdev;
struct hinic_hwdev *hwdev;
......@@ -97,6 +111,12 @@ struct hinic_dev {
int lb_test_rx_idx;
int lb_pkt_len;
u8 *lb_test_rx_buf;
struct dentry *dbgfs_root;
struct dentry *sq_dbgfs;
struct dentry *rq_dbgfs;
struct dentry *func_tbl_dbgfs;
struct hinic_debug_priv *dbg;
struct devlink *devlink;
bool cable_unplugged;
bool module_unrecognized;
......
......@@ -465,6 +465,7 @@ int hinic_hwdev_ifup(struct hinic_hwdev *hwdev, u16 sq_depth, u16 rq_depth)
func_to_io->hwdev = hwdev;
func_to_io->sq_depth = sq_depth;
func_to_io->rq_depth = rq_depth;
func_to_io->global_qpn = base_qpn;
err = hinic_io_init(func_to_io, hwif, nic_cap->max_qps, num_ceqs,
ceq_msix_entries);
......
......@@ -96,6 +96,8 @@ enum hinic_port_cmd {
HINIC_PORT_CMD_RSS_TEMP_MGR = 49,
HINIC_PORT_CMD_RD_LINE_TBL = 57,
HINIC_PORT_CMD_RSS_CFG = 66,
HINIC_PORT_CMD_FWCTXT_INIT = 69,
......
......@@ -305,6 +305,7 @@ static int init_qp(struct hinic_func_to_io *func_to_io,
func_to_io->sq_db[q_id] = db_base;
qp->sq.qid = q_id;
err = hinic_init_sq(&qp->sq, hwif, &func_to_io->sq_wq[q_id],
sq_msix_entry,
CI_ADDR(func_to_io->ci_addr_base, q_id),
......@@ -314,6 +315,7 @@ static int init_qp(struct hinic_func_to_io *func_to_io,
goto err_sq_init;
}
qp->rq.qid = q_id;
err = hinic_init_rq(&qp->rq, hwif, &func_to_io->rq_wq[q_id],
rq_msix_entry);
if (err) {
......
......@@ -59,6 +59,7 @@ struct hinic_nic_cfg {
struct hinic_func_to_io {
struct hinic_hwif *hwif;
struct hinic_hwdev *hwdev;
u16 global_qpn;
struct hinic_ceqs ceqs;
struct hinic_wqs wqs;
......
......@@ -81,6 +81,8 @@ struct hinic_sq {
struct hinic_wq *wq;
u16 qid;
u32 irq;
u16 msix_entry;
......@@ -90,6 +92,7 @@ struct hinic_sq {
void __iomem *db_base;
struct sk_buff **saved_skb;
struct hinic_debug_priv *dbg;
};
struct hinic_rq {
......@@ -97,6 +100,8 @@ struct hinic_rq {
struct hinic_wq *wq;
u16 qid;
struct cpumask affinity_mask;
u32 irq;
u16 msix_entry;
......@@ -110,6 +115,7 @@ struct hinic_rq {
u16 *pi_virt_addr;
dma_addr_t pi_dma_addr;
struct hinic_debug_priv *dbg;
};
struct hinic_qp {
......
......@@ -24,6 +24,7 @@
#include <linux/delay.h>
#include <linux/err.h>
#include "hinic_debugfs.h"
#include "hinic_hw_qp.h"
#include "hinic_hw_dev.h"
#include "hinic_devlink.h"
......@@ -153,6 +154,8 @@ static int create_txqs(struct hinic_dev *nic_dev)
if (!nic_dev->txqs)
return -ENOMEM;
hinic_sq_dbgfs_init(nic_dev);
for (i = 0; i < num_txqs; i++) {
struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
......@@ -162,13 +165,27 @@ static int create_txqs(struct hinic_dev *nic_dev)
"Failed to init Txq\n");
goto err_init_txq;
}
err = hinic_sq_debug_add(nic_dev, i);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to add SQ%d debug\n", i);
goto err_add_sq_dbg;
}
}
return 0;
err_add_sq_dbg:
hinic_clean_txq(&nic_dev->txqs[i]);
err_init_txq:
for (j = 0; j < i; j++)
for (j = 0; j < i; j++) {
hinic_sq_debug_rem(nic_dev->txqs[j].sq);
hinic_clean_txq(&nic_dev->txqs[j]);
}
hinic_sq_dbgfs_uninit(nic_dev);
devm_kfree(&netdev->dev, nic_dev->txqs);
return err;
......@@ -186,8 +203,12 @@ static void free_txqs(struct hinic_dev *nic_dev)
if (!nic_dev->txqs)
return;
for (i = 0; i < num_txqs; i++)
for (i = 0; i < num_txqs; i++) {
hinic_sq_debug_rem(nic_dev->txqs[i].sq);
hinic_clean_txq(&nic_dev->txqs[i]);
}
hinic_sq_dbgfs_uninit(nic_dev);
devm_kfree(&netdev->dev, nic_dev->txqs);
nic_dev->txqs = NULL;
......@@ -213,6 +234,8 @@ static int create_rxqs(struct hinic_dev *nic_dev)
if (!nic_dev->rxqs)
return -ENOMEM;
hinic_rq_dbgfs_init(nic_dev);
for (i = 0; i < num_rxqs; i++) {
struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
......@@ -222,13 +245,26 @@ static int create_rxqs(struct hinic_dev *nic_dev)
"Failed to init rxq\n");
goto err_init_rxq;
}
err = hinic_rq_debug_add(nic_dev, i);
if (err) {
netif_err(nic_dev, drv, netdev,
"Failed to add RQ%d debug\n", i);
goto err_add_rq_dbg;
}
}
return 0;
err_add_rq_dbg:
hinic_clean_rxq(&nic_dev->rxqs[i]);
err_init_rxq:
for (j = 0; j < i; j++)
for (j = 0; j < i; j++) {
hinic_rq_debug_rem(nic_dev->rxqs[j].rq);
hinic_clean_rxq(&nic_dev->rxqs[j]);
}
hinic_rq_dbgfs_uninit(nic_dev);
devm_kfree(&netdev->dev, nic_dev->rxqs);
return err;
......@@ -246,8 +282,12 @@ static void free_rxqs(struct hinic_dev *nic_dev)
if (!nic_dev->rxqs)
return;
for (i = 0; i < num_rxqs; i++)
for (i = 0; i < num_rxqs; i++) {
hinic_rq_debug_rem(nic_dev->rxqs[i].rq);
hinic_clean_rxq(&nic_dev->rxqs[i]);
}
hinic_rq_dbgfs_uninit(nic_dev);
devm_kfree(&netdev->dev, nic_dev->rxqs);
nic_dev->rxqs = NULL;
......@@ -1260,6 +1300,16 @@ static int nic_dev_init(struct pci_dev *pdev)
goto err_init_intr;
}
hinic_dbg_init(nic_dev);
hinic_func_tbl_dbgfs_init(nic_dev);
err = hinic_func_table_debug_add(nic_dev);
if (err) {
dev_err(&pdev->dev, "Failed to add func_table debug\n");
goto err_add_func_table_dbg;
}
err = register_netdev(netdev);
if (err) {
dev_err(&pdev->dev, "Failed to register netdev\n");
......@@ -1269,6 +1319,10 @@ static int nic_dev_init(struct pci_dev *pdev)
return 0;
err_reg_netdev:
hinic_func_table_debug_rem(nic_dev);
err_add_func_table_dbg:
hinic_func_tbl_dbgfs_uninit(nic_dev);
hinic_dbg_uninit(nic_dev);
hinic_free_intr_coalesce(nic_dev);
err_init_intr:
err_set_pfc:
......@@ -1391,6 +1445,12 @@ static void hinic_remove(struct pci_dev *pdev)
unregister_netdev(netdev);
hinic_func_table_debug_rem(nic_dev);
hinic_func_tbl_dbgfs_uninit(nic_dev);
hinic_dbg_uninit(nic_dev);
hinic_free_intr_coalesce(nic_dev);
hinic_port_del_mac(nic_dev, netdev->dev_addr, 0);
......@@ -1445,4 +1505,17 @@ static struct pci_driver hinic_driver = {
.sriov_configure = hinic_pci_sriov_configure,
};
module_pci_driver(hinic_driver);
static int __init hinic_module_init(void)
{
hinic_dbg_register_debugfs(HINIC_DRV_NAME);
return pci_register_driver(&hinic_driver);
}
static void __exit hinic_module_exit(void)
{
pci_unregister_driver(&hinic_driver);
hinic_dbg_unregister_debugfs();
}
module_init(hinic_module_init);
module_exit(hinic_module_exit);
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