Unverified Commit 7be0499d authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!4024 udma: add mailbox description printing. 

Merge Pull Request from: @zhaoweibo3 
 
driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8V1IQ


CVE: NA

[content]
This patch add print of mailbox if dfx_switch is on.
The print of mailbox description is key information
of bug locating.

Fixes: c256e44d ("hns3 udma: support loading and unloading of udma driver.")
Signed-off-by: default avatarWeibo Zhao <zhaoweibo3@huawei.com>
 
Link:https://gitee.com/openeuler/kernel/pulls/4024

 

Reviewed-by: default avatarChunzhi Hu <huchunzhi@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents e4bd0053 b3d21fd2

drivers/ub/hw/hns3/hns3_udma_cmd.c

+8 −1
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include "hns3_udma_common.h"

#include "hns3_udma_cmd.h"



static int debug_switch = 1;

int udma_cmd_init(struct udma_dev *udma_dev)

{

	sema_init(&udma_dev->cmd.poll_sem, 1);
@@ -299,6 +300,9 @@ static int __udma_cmq_send(struct udma_dev *dev, struct udma_cmq_desc *desc, 
	int ret = 0;

	int i;



	if (debug_switch)

		for (i = 0; i < num; i++)

			dump_desc(dev, desc + i);



	mutex_lock(&csq->lock);
@@ -341,7 +345,7 @@ static int __udma_cmq_send(struct udma_dev *dev, struct udma_cmq_desc *desc, 
	} else {

		/* FW/HW reset or incorrect number of desc */

		tail = ub_read(dev, UDMA_TX_CMQ_CI_REG);

		dev_warn(dev->dev, "CMDQ move tail from %d to %d\n",

		dev_warn(dev->dev, "CMDQ move tail from %u to %u.\n",

			 csq->head, tail);

		csq->head = tail;
@@ -604,3 +608,6 @@ int udma_cmd_mbox(struct udma_dev *dev, struct udma_cmq_desc *desc, 
	else

		return udma_cmd_mbox_poll(dev, desc, timeout, vfid);

}



module_param(debug_switch, int, 0444);

MODULE_PARM_DESC(debug_switch, "set debug print ON, default: 1");