Re: [RFC PATCH 8/9] iommu/arm-smmu-qcom: Stop using mmu500 reset for v2 MMUs

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 10/21/2022 10:25 PM, Dmitry Baryshkov wrote:
The arm_mmu500_reset() writes into registers specific for MMU500. For
the generic ARM SMMU v2 these registers (sACR) are defined as
'implementation defined'. Downstream Qualcomm driver for SMMUv2 doesn't
touch them.


Reviewed-by: Sai Prakash Ranjan <quic_saipraka@xxxxxxxxxxx>
Tested-by: Sai Prakash Ranjan <quic_saipraka@xxxxxxxxxxx>

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 41 ++++++++++++++++------
  1 file changed, 31 insertions(+), 10 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index 20cbb39cb670..9abc40c00f3e 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -376,7 +376,15 @@ static int qcom_sdm845_smmu500_reset(struct arm_smmu_device *smmu)
  	return ret;
  }
-static const struct arm_smmu_impl qcom_smmu_impl = {
+static const struct arm_smmu_impl qcom_smmu_v2_impl = {
+	.init_context = qcom_smmu_init_context,
+	.cfg_probe = qcom_smmu_cfg_probe,
+	.def_domain_type = qcom_smmu_def_domain_type,
+	.write_s2cr = qcom_smmu_write_s2cr,
+	.tlb_sync = qcom_smmu_tlb_sync,
+};
+
+static const struct arm_smmu_impl qcom_smmu_500_impl = {
  	.init_context = qcom_smmu_init_context,
  	.cfg_probe = qcom_smmu_cfg_probe,
  	.def_domain_type = qcom_smmu_def_domain_type,
@@ -394,7 +402,15 @@ static const struct arm_smmu_impl sdm845_smmu_500_impl = {
  	.tlb_sync = qcom_smmu_tlb_sync,
  };
-static const struct arm_smmu_impl qcom_adreno_smmu_impl = {
+static const struct arm_smmu_impl qcom_adreno_smmu_v2_impl = {
+	.init_context = qcom_adreno_smmu_init_context,
+	.def_domain_type = qcom_smmu_def_domain_type,
+	.alloc_context_bank = qcom_adreno_smmu_alloc_context_bank,
+	.write_sctlr = qcom_adreno_smmu_write_sctlr,
+	.tlb_sync = qcom_smmu_tlb_sync,
+};
+
+static const struct arm_smmu_impl qcom_adreno_smmu_500_impl = {
  	.init_context = qcom_adreno_smmu_init_context,
  	.def_domain_type = qcom_smmu_def_domain_type,
  	.reset = arm_mmu500_reset,
@@ -452,12 +468,17 @@ static const struct qcom_smmu_config qcom_smmu_impl0_cfg = {
   */
  static const struct qcom_smmu_match_data msm8996_smmu_data = {
  	.impl = NULL,
-	.adreno_impl = &qcom_adreno_smmu_impl,
+	.adreno_impl = &qcom_adreno_smmu_v2_impl,
+};
+
+static const struct qcom_smmu_match_data qcom_smmu_v2_data = {
+	.impl = &qcom_smmu_v2_impl,
+	.adreno_impl = &qcom_adreno_smmu_v2_impl,
  };
static const struct qcom_smmu_match_data qcom_smmu_data = {
-	.impl = &qcom_smmu_impl,
-	.adreno_impl = &qcom_adreno_smmu_impl,
+	.impl = &qcom_smmu_500_impl,
+	.adreno_impl = &qcom_adreno_smmu_500_impl,
  };
static const struct qcom_smmu_match_data sdm845_smmu_500_data = {
@@ -467,21 +488,21 @@ static const struct qcom_smmu_match_data sdm845_smmu_500_data = {
  };
static const struct qcom_smmu_match_data qcom_smmu_500_impl0_data = {
-	.impl = &qcom_smmu_impl,
-	.adreno_impl = &qcom_adreno_smmu_impl,
+	.impl = &qcom_smmu_500_impl,
+	.adreno_impl = &qcom_adreno_smmu_500_impl,
  	.cfg = &qcom_smmu_impl0_cfg,
  };
static const struct of_device_id __maybe_unused qcom_smmu_impl_of_match[] = {
  	{ .compatible = "qcom,msm8996-smmu-v2", .data = &msm8996_smmu_data },
-	{ .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_data },
+	{ .compatible = "qcom,msm8998-smmu-v2", .data = &qcom_smmu_v2_data },
  	{ .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_500_impl0_data },
  	{ .compatible = "qcom,sc7180-smmu-500", .data = &qcom_smmu_500_impl0_data },
  	{ .compatible = "qcom,sc7280-smmu-500", .data = &qcom_smmu_500_impl0_data },
  	{ .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data },
  	{ .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data },
-	{ .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_data },
-	{ .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_data },
+	{ .compatible = "qcom,sdm630-smmu-v2", .data = &qcom_smmu_v2_data },
+	{ .compatible = "qcom,sdm845-smmu-v2", .data = &qcom_smmu_v2_data },
  	{ .compatible = "qcom,sdm845-smmu-500", .data = &sdm845_smmu_500_data },
  	{ .compatible = "qcom,sm6125-smmu-500", .data = &qcom_smmu_500_impl0_data },
  	{ .compatible = "qcom,sm6350-smmu-500", .data = &qcom_smmu_500_impl0_data },




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux