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| author | Weili Qian <qianweili@huawei.com> | 2021-12-18 18:17:20 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2021-12-24 14:18:28 +1100 |
| commit | 4cee0700cf1d23b36f2c85507ff83b466a0e63a7 (patch) | |
| tree | fd4f8c3cdbd37554607da73dd9710c206c6976f0 /drivers/crypto | |
| parent | c2aec59be093bd44627bc4f6bc67e4614a93a7b6 (diff) | |
| download | linux-4cee0700cf1d23b36f2c85507ff83b466a0e63a7.tar.gz linux-4cee0700cf1d23b36f2c85507ff83b466a0e63a7.tar.bz2 linux-4cee0700cf1d23b36f2c85507ff83b466a0e63a7.zip | |
crypto: hisilicon/qm - disable qm clock-gating
For Kunpeng930, if qm clock-gating is enabled, rate limiter
will be inaccurate. Therefore, disable clock-gating before doing task.
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 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index b1fe9c7b8cc8..b731cb4ec294 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -126,6 +126,8 @@ #define QM_CQC_VFT 0x1 #define QM_VFT_CFG 0x100060 #define QM_VFT_CFG_OP_ENABLE 0x100054 +#define QM_PM_CTRL 0x100148 +#define QM_IDLE_DISABLE BIT(9) #define QM_VFT_CFG_DATA_L 0x100064 #define QM_VFT_CFG_DATA_H 0x100068 @@ -800,6 +802,19 @@ static void qm_db(struct hisi_qm *qm, u16 qn, u8 cmd, u16 index, u8 priority) qm->ops->qm_db(qm, qn, cmd, index, priority); } +static void qm_disable_clock_gate(struct hisi_qm *qm) +{ + u32 val; + + /* if qm enables clock gating in Kunpeng930, qos will be inaccurate. */ + if (qm->ver < QM_HW_V3) + return; + + val = readl(qm->io_base + QM_PM_CTRL); + val |= QM_IDLE_DISABLE; + writel(val, qm->io_base + QM_PM_CTRL); +} + static int qm_dev_mem_reset(struct hisi_qm *qm) { u32 val; @@ -5935,6 +5950,7 @@ int hisi_qm_init(struct hisi_qm *qm) } if (qm->fun_type == QM_HW_PF) { + qm_disable_clock_gate(qm); ret = qm_dev_mem_reset(qm); if (ret) { dev_err(dev, "failed to reset device memory\n"); @@ -6099,6 +6115,7 @@ static int qm_rebuild_for_resume(struct hisi_qm *qm) qm_cmd_init(qm); hisi_qm_dev_err_init(qm); + qm_disable_clock_gate(qm); ret = qm_dev_mem_reset(qm); if (ret) pci_err(pdev, "failed to reset device memory\n"); |