Commit 253ac3a9 authored by Luo bin's avatar Luo bin Committed by David S. Miller
Browse files

hinic: add support to query sq info 



add debugfs node for querying sq info, for example:
cat /sys/kernel/debug/hinic/0000:15:00.0/SQs/0x0/sq_pi

Signed-off-by: default avatarLuo bin <luobin9@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c30a3c95

drivers/net/ethernet/huawei/hinic/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -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

drivers/net/ethernet/huawei/hinic/hinic_debugfs.c

0 → 100644
+162 −0
Original line number Diff line number Diff line 
// 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;

}



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;



	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)

{

	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);

}



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_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;

}

drivers/net/ethernet/huawei/hinic/hinic_debugfs.h

0 → 100644
+27 −0
Original line number Diff line number Diff line 
/* 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"



int hinic_sq_debug_add(struct hinic_dev *dev, u16 sq_id);



void hinic_sq_debug_rem(struct hinic_sq *sq);



void hinic_sq_dbgfs_init(struct hinic_dev *nic_dev);



void hinic_sq_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

drivers/net/ethernet/huawei/hinic/hinic_dev.h

+15 −0
Original line number Diff line number Diff line
@@ -58,6 +58,18 @@ struct hinic_intr_coal_info { 
	u8	resend_timer_cfg;

};



enum hinic_dbg_type {

	HINIC_DBG_SQ_INFO,

};



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 +109,9 @@ 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 devlink			*devlink;

	bool				cable_unplugged;

	bool				module_unrecognized;

drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c

+1 −0
Original line number Diff line number Diff line
@@ -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);