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crypto: hisilicon/qm - support get device state

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Support get device current state. The value 0 indicates that
the device is busy, and the value 1 indicates that the
device is idle. When the device is in suspended, 1 is returned.

Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Weili Qian 2024-01-12 18:25:45 +08:00 committed by Herbert Xu
parent cc342dba0d
commit 8413fe3e7f
4 changed files with 50 additions and 0 deletions
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7
Documentation/ABI/testing/debugfs-hisi-hpre
View file

@ -111,6 +111,13 @@ Description: QM debug registers(regs) read hardware register value. This
node is used to show the change of the qm register values. This
node can be help users to check the change of register values.
What: /sys/kernel/debug/hisi_hpre/<bdf>/qm/qm_state
Date: Jan 2024
Contact: linux-crypto@vger.kernel.org
Description: Dump the state 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/diff_regs
Date: Mar 2022
Contact: linux-crypto@vger.kernel.org

7
Documentation/ABI/testing/debugfs-hisi-sec
View file

@ -91,6 +91,13 @@ Description: QM debug registers(regs) read hardware register value. This
node is used to show the change of the qm register values. This
node can be help users to check the change of register values.
What: /sys/kernel/debug/hisi_sec2/<bdf>/qm/qm_state
Date: Jan 2024
Contact: linux-crypto@vger.kernel.org
Description: Dump the state 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/diff_regs
Date: Mar 2022
Contact: linux-crypto@vger.kernel.org

7
Documentation/ABI/testing/debugfs-hisi-zip
View file

@ -104,6 +104,13 @@ Description: QM debug registers(regs) read hardware register value. This
node is used to show the change of the qm registers value. This
node can be help users to check the change of register values.
What: /sys/kernel/debug/hisi_zip/<bdf>/qm/qm_state
Date: Jan 2024
Contact: linux-crypto@vger.kernel.org
Description: Dump the state 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/diff_regs
Date: Mar 2022
Contact: linux-crypto@vger.kernel.org

29
drivers/crypto/hisilicon/debugfs.c
View file

@ -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;
/* If device is in suspended, directly return the idle state. */
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) {
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)
{
@ -1072,6 +1098,9 @@ 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);