Commit aa6603e1 authored by Weili Qian's avatar Weili Qian Committed by JiangShui
Browse files

crypto: hisilicon/qm - support get device state 

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8LFYK


CVE: NA

----------------------------------------------------------------------

Support get device state. The value 0 indicates that the device is busy,
and the value 1 indicates that the device is idle.

Signed-off-by: default avatarWeili Qian <qianweili@huawei.com>
Signed-off-by: default avatarJiangShui Yang <yangjiangshui@h-partners.com>
parent 5ab37851

Documentation/ABI/testing/debugfs-hisi-hpre

+7 −0
Original line number Diff line number Diff line
@@ -109,6 +109,13 @@ Description: Dump the stop queue status of the QM. The default value is 0, 
		will return non-zero value. Available for both PF and VF,

		and take no other effect on HPRE.



What:		/sys/kernel/debug/hisi_hpre/<bdf>/qm/qm_state

Date:		Dec 2023

Contact:	qianweili@huawei.com

Description:	Dump the status of the device.

		0: busy, 1: idle.

		Only available for PF, and take no other effect on HPRE.



What:           /sys/kernel/debug/hisi_hpre/<bdf>/hpre_dfx/send_cnt

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Documentation/ABI/testing/debugfs-hisi-sec

+7 −0
Original line number Diff line number Diff line
@@ -89,6 +89,13 @@ Description: Dump the stop queue status of the QM. The default value is 0, 
		will return non-zero value. Available for both PF and VF,

		and take no other effect on SEC.



What:		/sys/kernel/debug/hisi_sec2/<bdf>/qm/qm_state

Date:		Dec 2023

Contact:	qianweili@huawei.com

Description:	Dump the status of the device.

		0: busy, 1: idle.

		Only available for PF, and take no other effect on SEC.



What:           /sys/kernel/debug/hisi_sec2/<bdf>/sec_dfx/send_cnt

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

Documentation/ABI/testing/debugfs-hisi-zip

+7 −0
Original line number Diff line number Diff line
@@ -102,6 +102,13 @@ Description: Dump the stop queue status of the QM. The default value is 0, 
		will return non-zero value. Available for both PF and VF,

		and take no other effect on ZIP.



What:		/sys/kernel/debug/hisi_zip/<bdf>/qm/qm_state

Date:		Dec 2023

Contact:	qianweili@huawei.com

Description:	Dump the status of the device.

		0: busy, 1: idle.

		Only available for PF, and take no other effect on ZIP.



What:           /sys/kernel/debug/hisi_zip/<bdf>/zip_dfx/send_cnt

Date:           Apr 2020

Contact:        linux-crypto@vger.kernel.org

drivers/crypto/hisilicon/debugfs.c

+29 −0
Original line number Diff line number Diff line
@@ -24,6 +24,8 @@ 
#define QM_DFX_QN_SHIFT			16

#define QM_DFX_CNT_CLR_CE		0x100118

#define QM_DBG_WRITE_LEN		1024

#define QM_IN_IDLE_ST_REG		0x1040e4

#define QM_IN_IDLE_STATE		0x1



static const char * const qm_debug_file_name[] = {

	[CURRENT_QM]   = "current_qm",
@@ -1001,6 +1003,30 @@ static int qm_diff_regs_show(struct seq_file *s, void *unused) 
}

DEFINE_SHOW_ATTRIBUTE(qm_diff_regs);



static int qm_state_show(struct seq_file *s, void *unused)

{

	struct hisi_qm *qm = s->private;

	u32 val;

	int ret;



	ret = hisi_qm_get_dfx_access(qm);

	if (!ret) {

		val = readl(qm->io_base + QM_IN_IDLE_ST_REG);

		hisi_qm_put_dfx_access(qm);

	} else if (ret == -EAGAIN) {

		/* If device is in suspended, directly return the idle state. */

		val = QM_IN_IDLE_STATE;

	} else {

		return ret;

	}



	seq_printf(s, "%u\n", val);



	return 0;

}



DEFINE_SHOW_ATTRIBUTE(qm_state);



static ssize_t qm_status_read(struct file *filp, char __user *buffer,

			      size_t count, loff_t *pos)

{
@@ -1073,6 +1099,9 @@ void hisi_qm_debug_init(struct hisi_qm *qm) 


	/* only show this in PF */

	if (qm->fun_type == QM_HW_PF) {

		debugfs_create_file("qm_state", 0444, qm->debug.qm_d,

					qm, &qm_state_fops);



		qm_create_debugfs_file(qm, qm->debug.debug_root, CURRENT_QM);

		for (i = CURRENT_Q; i < DEBUG_FILE_NUM; i++)

			qm_create_debugfs_file(qm, qm->debug.qm_d, i);