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| author | Weili Qian <qianweili@huawei.com> | 2024-01-12 11:25:45 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2024-01-26 09:39:32 +0100 |
| commit | 8413fe3e7fdfb412baa9e31b3f1d2eaf6d21a373 (patch) | |
| tree | 7b9d1e812943ada21a5f74f3737f8cde25e69411 /drivers/crypto | |
| parent | crypto: iaa - Remove unnecessary debugfs_create_dir() error check in iaa_cryp... (diff) | |
| download | linux-8413fe3e7fdfb412baa9e31b3f1d2eaf6d21a373.tar.xz linux-8413fe3e7fdfb412baa9e31b3f1d2eaf6d21a373.zip | |
crypto: hisilicon/qm - support get device state
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>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/hisilicon/debugfs.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/debugfs.c b/drivers/crypto/hisilicon/debugfs.c index 80ed4b2d209c..615c8e18d8b0 100644 --- a/drivers/crypto/hisilicon/debugfs.c +++ b/drivers/crypto/hisilicon/debugfs.c @@ -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); |