diff options
Diffstat (limited to 'meta-arm/meta-arm-bsp/recipes-kernel/linux/linux-yocto-5.19/n1sdp/0001-iommu-arm-smmu-v3-workaround-for-ATC_INV_SIZE_ALL-in.patch')
| -rw-r--r-- | meta-arm/meta-arm-bsp/recipes-kernel/linux/linux-yocto-5.19/n1sdp/0001-iommu-arm-smmu-v3-workaround-for-ATC_INV_SIZE_ALL-in.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/meta-arm/meta-arm-bsp/recipes-kernel/linux/linux-yocto-5.19/n1sdp/0001-iommu-arm-smmu-v3-workaround-for-ATC_INV_SIZE_ALL-in.patch b/meta-arm/meta-arm-bsp/recipes-kernel/linux/linux-yocto-5.19/n1sdp/0001-iommu-arm-smmu-v3-workaround-for-ATC_INV_SIZE_ALL-in.patch new file mode 100644 index 0000000000..188616f599 --- /dev/null +++ b/meta-arm/meta-arm-bsp/recipes-kernel/linux/linux-yocto-5.19/n1sdp/0001-iommu-arm-smmu-v3-workaround-for-ATC_INV_SIZE_ALL-in.patch @@ -0,0 +1,47 @@ +From 97caa9365f221b5aff93274a29ea894da55dce88 Mon Sep 17 00:00:00 2001 +From: Manoj Kumar <manoj.kumar3@arm.com> +Date: Mon, 1 Feb 2021 21:36:43 +0530 +Subject: [PATCH] iommu/arm-smmu-v3: workaround for ATC_INV_SIZE_ALL in N1SDP + +ATC_INV_SIZE_ALL request should automatically translate to ATS +address which is not happening in SMMUv3 version gone into +N1SDP platform. This workaround manually sets the ATS address +field to proper value for ATC_INV_SIZE_ALL command. + +Change-Id: If89465be94720a62be85e1e6612f17e93fa9b8a5 +Signed-off-by: Manoj Kumar <manoj.kumar3@arm.com> +Signed-off-by: Khasim Syed Mohammed <khasim.mohammed@arm.com> + +Upstream-Status: Inappropriate [Workaround] +Signed-off-by: Manoj Kumar <manoj.kumar3@arm.com> +Signed-off-by: Vishnu Banavath <vishnu.banavath@arm.com> +Signed-off-by: Adam Johnston <adam.johnston@arm.com> +--- + drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 + + drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 1 + + 2 files changed, 2 insertions(+) + +diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +index 88817a3376ef..80e252d59a3a 100644 +--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c ++++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +@@ -1731,6 +1731,7 @@ arm_smmu_atc_inv_to_cmd(int ssid, unsigned long iova, size_t size, + }; + + if (!size) { ++ cmd->atc.addr = ATC_INV_ADDR_ALL; + cmd->atc.size = ATC_INV_SIZE_ALL; + return; + } +diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +index cd48590ada30..20892b2bfe1d 100644 +--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h ++++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +@@ -472,6 +472,7 @@ struct arm_smmu_cmdq_ent { + + #define CMDQ_OP_ATC_INV 0x40 + #define ATC_INV_SIZE_ALL 52 ++ #define ATC_INV_ADDR_ALL 0x7FFFFFFFFFFFF000UL + struct { + u32 sid; + u32 ssid; |