[PATCH 1/5] crypto: hisilicon/sec2 - clear SEC debug regs
From: Longfang Liu <liulongfang@huawei.com>
Date: 2020-06-26 10:32:50
Subsystem:
crypto api, hisilicon security engine v2 driver (sec2), the rest · Maintainers:
Herbert Xu, "David S. Miller", Longfang Liu, Linus Torvalds
From: Kai Ye <redacted> SEC debug registers aren't cleared even if its driver is removed, so add a clearing operation in driver removing. Signed-off-by: Kai Ye <redacted> Reviewed-by: Longfang Liu <liulongfang@huawei.com> --- drivers/crypto/hisilicon/sec2/sec_main.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/crypto/hisilicon/sec2/sec_main.c b/drivers/crypto/hisilicon/sec2/sec_main.c
index a4cb58b..c2567cc 100644
--- a/drivers/crypto/hisilicon/sec2/sec_main.c
+++ b/drivers/crypto/hisilicon/sec2/sec_main.c@@ -346,10 +346,17 @@ static int sec_set_user_domain_and_cache(struct hisi_qm *qm) /* sec_debug_regs_clear() - clear the sec debug regs */ static void sec_debug_regs_clear(struct hisi_qm *qm) { + int i; + /* clear current_qm */ writel(0x0, qm->io_base + QM_DFX_MB_CNT_VF); writel(0x0, qm->io_base + QM_DFX_DB_CNT_VF); + /* clear sec dfx regs */ + writel(0x1, qm->io_base + SEC_CTRL_CNT_CLR_CE); + for (i = 0; i < ARRAY_SIZE(sec_dfx_regs); i++) + readl(qm->io_base + sec_dfx_regs[i].offset); + /* clear rdclr_en */ writel(0x0, qm->io_base + SEC_CTRL_CNT_CLR_CE);
--
2.8.1