From: Rob Clark <robdclark@gmail.com>
To: dri-devel@lists.freedesktop.org,
iommu@lists.linux-foundation.org, linux-arm-msm@vger.kernel.org
Cc: Rob Clark <robdclark@chromium.org>,
Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
open list <linux-kernel@vger.kernel.org>,
Will Deacon <will@kernel.org>, Joerg Roedel <joro@8bytes.org>,
Robin Murphy <robin.murphy@arm.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Jordan Crouse <jcrouse@codeaurora.org>,
Sibi Sankar <sibis@codeaurora.org>,
Vivek Gautam <vivek.gautam@codeaurora.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jon Hunter <jonathanh@nvidia.com>,
Stephen Boyd <swboyd@chromium.org>,
freedreno@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 03/19] iommu/arm-smmu: Add support for split pagetables
Date: Thu, 13 Aug 2020 19:40:58 -0700 [thread overview]
Message-ID: <20200814024114.1177553-4-robdclark@gmail.com> (raw)
In-Reply-To: <20200810222657.1841322-1-jcrouse@codeaurora.org>
From: Jordan Crouse <jcrouse@codeaurora.org>
Enable TTBR1 for a context bank if IO_PGTABLE_QUIRK_ARM_TTBR1 is selected
by the io-pgtable configuration.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
---
drivers/iommu/arm/arm-smmu/arm-smmu.c | 21 ++++++++++++++++-----
drivers/iommu/arm/arm-smmu/arm-smmu.h | 25 +++++++++++++++++++------
2 files changed, 35 insertions(+), 11 deletions(-)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 37d8d49299b4..976d43a7f2ff 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -552,11 +552,15 @@ static void arm_smmu_init_context_bank(struct arm_smmu_domain *smmu_domain,
cb->ttbr[0] = pgtbl_cfg->arm_v7s_cfg.ttbr;
cb->ttbr[1] = 0;
} else {
- cb->ttbr[0] = pgtbl_cfg->arm_lpae_s1_cfg.ttbr;
- cb->ttbr[0] |= FIELD_PREP(ARM_SMMU_TTBRn_ASID,
- cfg->asid);
+ cb->ttbr[0] = FIELD_PREP(ARM_SMMU_TTBRn_ASID,
+ cfg->asid);
cb->ttbr[1] = FIELD_PREP(ARM_SMMU_TTBRn_ASID,
- cfg->asid);
+ cfg->asid);
+
+ if (pgtbl_cfg->quirks & IO_PGTABLE_QUIRK_ARM_TTBR1)
+ cb->ttbr[1] |= pgtbl_cfg->arm_lpae_s1_cfg.ttbr;
+ else
+ cb->ttbr[0] |= pgtbl_cfg->arm_lpae_s1_cfg.ttbr;
}
} else {
cb->ttbr[0] = pgtbl_cfg->arm_lpae_s2_cfg.vttbr;
@@ -822,7 +826,14 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain,
/* Update the domain's page sizes to reflect the page table format */
domain->pgsize_bitmap = pgtbl_cfg.pgsize_bitmap;
- domain->geometry.aperture_end = (1UL << ias) - 1;
+
+ if (pgtbl_cfg.quirks & IO_PGTABLE_QUIRK_ARM_TTBR1) {
+ domain->geometry.aperture_start = ~0UL << ias;
+ domain->geometry.aperture_end = ~0UL;
+ } else {
+ domain->geometry.aperture_end = (1UL << ias) - 1;
+ }
+
domain->geometry.force_aperture = true;
/* Initialise the context bank with our page table cfg */
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.h b/drivers/iommu/arm/arm-smmu/arm-smmu.h
index 83294516ac08..f3e456893f28 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.h
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.h
@@ -169,10 +169,12 @@ enum arm_smmu_cbar_type {
#define ARM_SMMU_CB_TCR 0x30
#define ARM_SMMU_TCR_EAE BIT(31)
#define ARM_SMMU_TCR_EPD1 BIT(23)
+#define ARM_SMMU_TCR_A1 BIT(22)
#define ARM_SMMU_TCR_TG0 GENMASK(15, 14)
#define ARM_SMMU_TCR_SH0 GENMASK(13, 12)
#define ARM_SMMU_TCR_ORGN0 GENMASK(11, 10)
#define ARM_SMMU_TCR_IRGN0 GENMASK(9, 8)
+#define ARM_SMMU_TCR_EPD0 BIT(7)
#define ARM_SMMU_TCR_T0SZ GENMASK(5, 0)
#define ARM_SMMU_VTCR_RES1 BIT(31)
@@ -350,12 +352,23 @@ struct arm_smmu_domain {
static inline u32 arm_smmu_lpae_tcr(struct io_pgtable_cfg *cfg)
{
- return ARM_SMMU_TCR_EPD1 |
- FIELD_PREP(ARM_SMMU_TCR_TG0, cfg->arm_lpae_s1_cfg.tcr.tg) |
- FIELD_PREP(ARM_SMMU_TCR_SH0, cfg->arm_lpae_s1_cfg.tcr.sh) |
- FIELD_PREP(ARM_SMMU_TCR_ORGN0, cfg->arm_lpae_s1_cfg.tcr.orgn) |
- FIELD_PREP(ARM_SMMU_TCR_IRGN0, cfg->arm_lpae_s1_cfg.tcr.irgn) |
- FIELD_PREP(ARM_SMMU_TCR_T0SZ, cfg->arm_lpae_s1_cfg.tcr.tsz);
+ u32 tcr = FIELD_PREP(ARM_SMMU_TCR_TG0, cfg->arm_lpae_s1_cfg.tcr.tg) |
+ FIELD_PREP(ARM_SMMU_TCR_SH0, cfg->arm_lpae_s1_cfg.tcr.sh) |
+ FIELD_PREP(ARM_SMMU_TCR_ORGN0, cfg->arm_lpae_s1_cfg.tcr.orgn) |
+ FIELD_PREP(ARM_SMMU_TCR_IRGN0, cfg->arm_lpae_s1_cfg.tcr.irgn) |
+ FIELD_PREP(ARM_SMMU_TCR_T0SZ, cfg->arm_lpae_s1_cfg.tcr.tsz);
+
+ /*
+ * When TTBR1 is selected shift the TCR fields by 16 bits and disable
+ * translation in TTBR0
+ */
+ if (cfg->quirks & IO_PGTABLE_QUIRK_ARM_TTBR1) {
+ tcr = (tcr << 16) & ~ARM_SMMU_TCR_A1;
+ tcr |= ARM_SMMU_TCR_EPD0;
+ } else
+ tcr |= ARM_SMMU_TCR_EPD1;
+
+ return tcr;
}
static inline u32 arm_smmu_lpae_tcr2(struct io_pgtable_cfg *cfg)
--
2.26.2
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next prev parent reply other threads:[~2020-08-14 2:43 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-10 22:26 [PATCH v12 00/13] iommu/arm-smmu: Add Adreno SMMU specific implementation Jordan Crouse
2020-08-10 22:26 ` [PATCH v12 01/13] iommu/arm-smmu: Pass io-pgtable config to implementation specific function Jordan Crouse
2020-08-10 22:26 ` [PATCH v12 02/13] iommu/arm-smmu: Add support for split pagetables Jordan Crouse
2020-08-10 22:26 ` [PATCH v12 03/13] iommu/arm-smmu: Prepare for the adreno-smmu implementation Jordan Crouse
2020-08-10 22:26 ` [PATCH v12 05/13] iommu/arm-smmu-qcom: Add implementation for the adreno GPU SMMU Jordan Crouse
2020-08-13 13:23 ` Will Deacon
2020-08-10 22:26 ` [PATCH v12 06/13] dt-bindings: arm-smmu: Add compatible string for Adreno " Jordan Crouse
2020-08-10 22:26 ` [RFC v12 13/13] iommu/arm-smmu: Add a init_context_bank implementation hook Jordan Crouse
2020-08-13 13:03 ` Will Deacon
2020-08-13 13:19 ` [PATCH v12 00/13] iommu/arm-smmu: Add Adreno SMMU specific implementation Will Deacon
2020-08-14 2:40 ` [PATCH 00/19] iommu/arm-smmu + drm/msm: per-process GPU pgtables Rob Clark
2020-08-17 16:51 ` Jordan Crouse
2020-08-14 2:40 ` [PATCH 01/19] drm/msm: remove dangling submitqueue references Rob Clark
2020-08-17 16:51 ` Jordan Crouse
2020-09-01 2:35 ` Bjorn Andersson
2020-09-01 3:42 ` Rob Clark
2020-09-01 5:42 ` Bjorn Andersson
2020-09-01 5:42 ` Bjorn Andersson
2020-08-14 2:40 ` [PATCH 02/19] iommu/arm-smmu: Pass io-pgtable config to implementation specific function Rob Clark
2020-09-01 3:36 ` Bjorn Andersson
2020-08-14 2:40 ` Rob Clark [this message]
2020-09-01 3:41 ` [PATCH 03/19] iommu/arm-smmu: Add support for split pagetables Bjorn Andersson
2020-08-14 2:40 ` [PATCH 04/19] iommu/arm-smmu: Prepare for the adreno-smmu implementation Rob Clark
2020-08-14 2:41 ` [PATCH 05/19] iommu: add private interface for adreno-smmu Rob Clark
2020-08-17 16:52 ` [Freedreno] " Jordan Crouse
2020-09-01 3:52 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 06/19] drm/msm/gpu: add dev_to_gpu() helper Rob Clark
2020-08-17 16:53 ` [Freedreno] " Jordan Crouse
2020-09-01 4:32 ` Bjorn Andersson
2020-09-01 15:53 ` Rob Clark
2020-08-14 2:41 ` [PATCH 07/19] drm/msm: set adreno_smmu as gpu's drvdata Rob Clark
2020-08-17 16:55 ` Jordan Crouse
2020-09-01 4:58 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 08/19] iommu/arm-smmu: constify some helpers Rob Clark
2020-09-01 4:56 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 09/19] iommu/arm-smmu-qcom: Add implementation for the adreno GPU SMMU Rob Clark
2020-09-01 5:00 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 10/19] dt-bindings: arm-smmu: Add compatible string for Adreno " Rob Clark
2020-09-01 5:00 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 11/19] drm/msm: Add a context pointer to the submitqueue Rob Clark
2020-09-01 5:05 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 12/19] drm/msm: Drop context arg to gpu->submit() Rob Clark
2020-09-01 5:06 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 13/19] drm/msm: Set the global virtual address range from the IOMMU domain Rob Clark
2020-09-01 5:23 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 14/19] drm/msm: Add support to create a local pagetable Rob Clark
2020-09-01 5:28 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 15/19] drm/msm: Add support for private address space instances Rob Clark
2020-09-01 5:30 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 16/19] drm/msm/a6xx: Add support for per-instance pagetables Rob Clark
2020-08-17 15:40 ` Akhil P Oommen
2020-08-17 15:51 ` Rob Clark
2020-08-17 16:47 ` Jordan Crouse
2020-08-14 2:41 ` [PATCH 17/19] arm: dts: qcom: sm845: Set the compatible string for the GPU SMMU Rob Clark
2020-08-14 2:41 ` [PATCH 18/19] iommu/arm-smmu: add a way for implementations to influence SCTLR Rob Clark
2020-09-01 5:31 ` Bjorn Andersson
2020-08-14 2:41 ` [PATCH 19/19] drm/msm: show process names in gem_describe Rob Clark
2020-08-17 17:14 ` [Freedreno] " Jordan Crouse
2020-09-01 5:35 ` Bjorn Andersson
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