diff options
| author | Weili Qian <qianweili@huawei.com> | 2022-08-27 18:26:57 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-09-02 18:38:06 +0800 |
| commit | 95b66bc4e789c5698b973e92235c2e901c7546e0 (patch) | |
| tree | 19f6c09fbc1c15a73b845eeb7878a0daf7db1b50 /drivers/crypto | |
| parent | 31b39755e32568b43c80814c5e13d7b1ab796d73 (diff) | |
| download | linux-95b66bc4e789c5698b973e92235c2e901c7546e0.tar.bz2 | |
crypto: hisilicon/qm - check mailbox operation result
After the mailbox operation is complete, the result may be unsuccessful.
It needs to check the status bits of the mailbox register,
if it fails, -EIO 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/qm.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index c180ad33d2f8..1c661c89308d 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -36,6 +36,7 @@ #define QM_MB_PING_ALL_VFS 0xffff #define QM_MB_CMD_DATA_SHIFT 32 #define QM_MB_CMD_DATA_MASK GENMASK(31, 0) +#define QM_MB_STATUS_MASK GENMASK(12, 9) /* sqc shift */ #define QM_SQ_HOP_NUM_SHIFT 0 @@ -728,8 +729,12 @@ static void qm_mb_write(struct hisi_qm *qm, const void *src) static int qm_mb_nolock(struct hisi_qm *qm, struct qm_mailbox *mailbox) { + int ret; + u32 val; + if (unlikely(hisi_qm_wait_mb_ready(qm))) { dev_err(&qm->pdev->dev, "QM mailbox is busy to start!\n"); + ret = -EBUSY; goto mb_busy; } @@ -737,6 +742,14 @@ static int qm_mb_nolock(struct hisi_qm *qm, struct qm_mailbox *mailbox) if (unlikely(hisi_qm_wait_mb_ready(qm))) { dev_err(&qm->pdev->dev, "QM mailbox operation timeout!\n"); + ret = -ETIMEDOUT; + goto mb_busy; + } + + val = readl(qm->io_base + QM_MB_CMD_SEND_BASE); + if (val & QM_MB_STATUS_MASK) { + dev_err(&qm->pdev->dev, "QM mailbox operation failed!\n"); + ret = -EIO; goto mb_busy; } @@ -744,7 +757,7 @@ static int qm_mb_nolock(struct hisi_qm *qm, struct qm_mailbox *mailbox) mb_busy: atomic64_inc(&qm->debug.dfx.mb_err_cnt); - return -EBUSY; + return ret; } int hisi_qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue, |