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From: Olav Haugan <ohaugan@codeaurora.org>
To: will.deacon@arm.com
Cc: mitchelh@codeaurora.org, iommu@lists.linux-foundation.org,
	linux-arm-kernel@lists.infradead.org,
	linux-arm-msm@vger.kernel.org,
	Olav Haugan <ohaugan@codeaurora.org>
Subject: [PATCH v2 1/2] iommu/arm-smmu: Fix programming of SMMU_CBn_TCR for stage 1
Date: Mon,  4 Aug 2014 11:01:02 -0700	[thread overview]
Message-ID: <1407175263-10699-2-git-send-email-ohaugan@codeaurora.org> (raw)
In-Reply-To: <1407175263-10699-1-git-send-email-ohaugan@codeaurora.org>

Stage-1 context bank does not have SMMU_CBn_TCR[SL0] field. SL0 field
is only applicable to stage-2 context banks.

Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
---
 drivers/iommu/arm-smmu.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 3cf698d..c16431f 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -864,8 +864,11 @@ static void arm_smmu_init_context_bank(struct arm_smmu_domain *smmu_domain)
 	reg |= TTBCR_EAE |
 	      (TTBCR_SH_IS << TTBCR_SH0_SHIFT) |
 	      (TTBCR_RGN_WBWA << TTBCR_ORGN0_SHIFT) |
-	      (TTBCR_RGN_WBWA << TTBCR_IRGN0_SHIFT) |
-	      (TTBCR_SL0_LVL_1 << TTBCR_SL0_SHIFT);
+	      (TTBCR_RGN_WBWA << TTBCR_IRGN0_SHIFT);
+
+	if (!stage1)
+		reg |= (TTBCR_SL0_LVL_1 << TTBCR_SL0_SHIFT);
+
 	writel_relaxed(reg, cb_base + ARM_SMMU_CB_TTBCR);
 
 	/* MAIR0 (stage-1 only) */
-- 
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation

WARNING: multiple messages have this Message-ID (diff)
From: ohaugan@codeaurora.org (Olav Haugan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/2] iommu/arm-smmu: Fix programming of SMMU_CBn_TCR for stage 1
Date: Mon,  4 Aug 2014 11:01:02 -0700	[thread overview]
Message-ID: <1407175263-10699-2-git-send-email-ohaugan@codeaurora.org> (raw)
In-Reply-To: <1407175263-10699-1-git-send-email-ohaugan@codeaurora.org>

Stage-1 context bank does not have SMMU_CBn_TCR[SL0] field. SL0 field
is only applicable to stage-2 context banks.

Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>
---
 drivers/iommu/arm-smmu.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 3cf698d..c16431f 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -864,8 +864,11 @@ static void arm_smmu_init_context_bank(struct arm_smmu_domain *smmu_domain)
 	reg |= TTBCR_EAE |
 	      (TTBCR_SH_IS << TTBCR_SH0_SHIFT) |
 	      (TTBCR_RGN_WBWA << TTBCR_ORGN0_SHIFT) |
-	      (TTBCR_RGN_WBWA << TTBCR_IRGN0_SHIFT) |
-	      (TTBCR_SL0_LVL_1 << TTBCR_SL0_SHIFT);
+	      (TTBCR_RGN_WBWA << TTBCR_IRGN0_SHIFT);
+
+	if (!stage1)
+		reg |= (TTBCR_SL0_LVL_1 << TTBCR_SL0_SHIFT);
+
 	writel_relaxed(reg, cb_base + ARM_SMMU_CB_TTBCR);
 
 	/* MAIR0 (stage-1 only) */
-- 
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation

  reply	other threads:[~2014-08-04 18:01 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-04 18:01 [PATCH v2 0/2] arm-smmu fixes for CBn_TCR and S2CR/SMR programming Olav Haugan
2014-08-04 18:01 ` Olav Haugan
2014-08-04 18:01 ` Olav Haugan [this message]
2014-08-04 18:01   ` [PATCH v2 1/2] iommu/arm-smmu: Fix programming of SMMU_CBn_TCR for stage 1 Olav Haugan
2014-08-04 18:01 ` [PATCH v2 2/2] iommu/arm-smmu: Do not access non-existing SMR registers Olav Haugan
2014-08-04 18:01   ` Olav Haugan
2014-08-06 10:19   ` Will Deacon
2014-08-06 10:19     ` Will Deacon
2014-08-06 16:44     ` Olav Haugan
2014-08-06 16:44       ` Olav Haugan
     [not found]       ` <53E25B76.6090208-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2014-08-06 17:35         ` Will Deacon
2014-08-06 17:35           ` Will Deacon
     [not found]           ` <20140806173518.GG25953-5wv7dgnIgG8@public.gmane.org>
2014-08-06 23:34             ` Olav Haugan
2014-08-06 23:34               ` Olav Haugan
2014-08-07  9:22               ` Will Deacon
2014-08-07  9:22                 ` Will Deacon
     [not found]                 ` <20140807092254.GH13703-5wv7dgnIgG8@public.gmane.org>
2014-08-08 18:51                   ` Olav Haugan
2014-08-08 18:51                     ` Olav Haugan

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