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crypto: hisilicon/hpre - disable FLR triggered by hardware 

for Hi1620 hardware, we should disable these hardware flr:
1. BME_FLR - bit 7,
2. PM_FLR - bit 11,
3. SRIOV_FLR - bit 12,
Or HPRE may goto D3 state, when we bind and unbind HPRE quickly,
as it does FLR triggered by BME/PM/SRIOV.

Fixes: c8b4b477079d("crypto: hisilicon - add HiSilicon HPRE accelerator")
Signed-off-by: Hui Tang <tanghui20@huawei.com>
Signed-off-by: Meng Yu <yumeng18@huawei.com>
Reviewed-by: Zaibo Xu <xuzaibo@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Hui Tang 2020-07-10 15:40:46 +08:00 committed by Herbert Xu
parent dadbe4c117
commit 10f33d391e
1 changed files with 22 additions and 4 deletions
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26
drivers/crypto/hisilicon/hpre/hpre_main.c
View File

@ -82,6 +82,10 @@
#define HPRE_CORE_ECC_2BIT_ERR BIT(1)
#define HPRE_OOO_ECC_2BIT_ERR BIT(5)
#define HPRE_QM_BME_FLR BIT(7)
#define HPRE_QM_PM_FLR BIT(11)
#define HPRE_QM_SRIOV_FLR BIT(12)
#define HPRE_VIA_MSI_DSM 1
#define HPRE_SQE_MASK_OFFSET 8
#define HPRE_SQE_MASK_LEN 24
@ -230,6 +234,22 @@ static int hpre_cfg_by_dsm(struct hisi_qm *qm)
return 0;
}
/*
* For Hi1620, we shoul disable FLR triggered by hardware (BME/PM/SRIOV).
* Or it may stay in D3 state when we bind and unbind hpre quickly,
* as it does FLR triggered by hardware.
*/
static void disable_flr_of_bme(struct hisi_qm *qm)
{
u32 val;
val = readl(HPRE_ADDR(qm, QM_PEH_AXUSER_CFG));
val &= ~(HPRE_QM_BME_FLR | HPRE_QM_SRIOV_FLR);
val |= HPRE_QM_PM_FLR;
writel(val, HPRE_ADDR(qm, QM_PEH_AXUSER_CFG));
writel(PEH_AXUSER_CFG_ENABLE, HPRE_ADDR(qm, QM_PEH_AXUSER_CFG_ENABLE));
}
static int hpre_set_user_domain_and_cache(struct hisi_qm *qm)
{
struct device *dev = &qm->pdev->dev;
@ -241,10 +261,6 @@ static int hpre_set_user_domain_and_cache(struct hisi_qm *qm)
writel(HPRE_QM_USR_CFG_MASK, HPRE_ADDR(qm, QM_AWUSER_M_CFG_ENABLE));
writel_relaxed(HPRE_QM_AXI_CFG_MASK, HPRE_ADDR(qm, QM_AXI_M_CFG));
/* disable FLR triggered by BME(bus master enable) */
writel(PEH_AXUSER_CFG, HPRE_ADDR(qm, QM_PEH_AXUSER_CFG));
writel(PEH_AXUSER_CFG_ENABLE, HPRE_ADDR(qm, QM_PEH_AXUSER_CFG_ENABLE));
/* HPRE need more time, we close this interrupt */
val = readl_relaxed(HPRE_ADDR(qm, HPRE_QM_ABNML_INT_MASK));
val |= BIT(HPRE_TIMEOUT_ABNML_BIT);
@ -295,6 +311,8 @@ static int hpre_set_user_domain_and_cache(struct hisi_qm *qm)
if (ret)
dev_err(dev, "acpi_evaluate_dsm err.\n");
disable_flr_of_bme(qm);
return ret;
}