From: swarren@wwwdotorg•org (Stephen Warren)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2 21/22] iommu/tegra: smmu: Support Multiple ASID
Date: Thu, 18 Jul 2013 14:43:06 -0600 [thread overview]
Message-ID: <51E8535A.30605@wwwdotorg.org> (raw)
In-Reply-To: <1373021097-32420-22-git-send-email-hdoyu@nvidia.com>
On 07/05/2013 04:44 AM, Hiroshi Doyu wrote:
> Support Multiple Address Space(AS). Tegra SMMU can have multiple
> ASes. We reserve 2 of them for static assignment, AS[0] for system
> default, AS[1] for AHB clusters as protected domain from others, where
> there are many traditional pheripheral devices like USB, SD/MMC. They
> should be isolated from some smart devices like host1x for system
> robustness. Even if smart devices behaves wrongly, the traditional
> devices(SD/MMC, USB) wouldn't be affected, and the system could
> continue most likely.
> diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
> static int smmu_iommu_add_device(struct device *dev)
> {
> int err;
> - struct dma_iommu_mapping *map = smmu_handle->map[SYSTEM_DEFAULT];
> + u64 swgroup;
> + struct dma_iommu_mapping *map = NULL;
> +
> + swgroup = smmu_of_get_memory_client(dev);
> + switch (swgroup) {
> + case TEGRA_SWGROUP_BIT(PPCS):
> + map = smmu_handle->map[SYSTEM_PROTECTED];
> + break;
> + default:
> + map = smmu_handle->map[SYSTEM_DEFAULT];
I already mentioned this, but just for completeness: What is
smmu->num_as <= SYSTEM_DEFAULT?
next prev parent reply other threads:[~2013-07-18 20:43 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-05 10:44 [PATCH v2 00/22] Unified SMMU driver among Tegra SoCs Hiroshi Doyu
2013-07-05 10:44 ` [PATCH v2 01/22] [HACK] of: dev_node has struct device pointer Hiroshi Doyu
2013-07-16 22:57 ` Stephen Warren
2013-07-16 23:16 ` Thierry Reding
2013-07-29 10:13 ` Hiroshi Doyu
2013-07-29 13:13 ` Lorenzo Pieralisi
2013-07-05 10:44 ` [PATCH v2 02/22] ARM: tegra: Populate AHB/IOMMU earlier than others Hiroshi Doyu
2013-07-16 23:03 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 03/22] ARM: tegra: Create a DT header defining swgroups ID Hiroshi Doyu
2013-07-16 23:07 ` Stephen Warren
2013-07-29 10:53 ` Hiroshi Doyu
2013-07-29 17:45 ` Stephen Warren
2013-07-30 4:56 ` Hiroshi Doyu
2013-07-05 10:44 ` [PATCH v2 04/22] ARM: dt: tegra30: iommu: Add "nvidia,swgroup" Hiroshi Doyu
2013-07-16 23:10 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 05/22] ARM: dt: tegra30: iommu: Add "nvidia,memory-client" Hiroshi Doyu
2013-07-16 23:14 ` [PATCH v2 05/22] ARM: dt: tegra30: iommu: Add "nvidia, memory-client" Stephen Warren
2013-07-29 11:06 ` [PATCH v2 05/22] ARM: dt: tegra30: iommu: Add "nvidia,memory-client" Hiroshi Doyu
2013-07-29 17:47 ` [PATCH v2 05/22] ARM: dt: tegra30: iommu: Add "nvidia, memory-client" Stephen Warren
2013-07-30 5:11 ` [PATCH v2 05/22] ARM: dt: tegra30: iommu: Add "nvidia,memory-client" Hiroshi Doyu
2013-07-05 10:44 ` [PATCH v2 06/22] ARM: dt: tegra114: iommu: Fix IOMMU register address Hiroshi Doyu
2013-07-16 23:18 ` Stephen Warren
2013-07-16 23:27 ` Thierry Reding
2013-07-05 10:44 ` [PATCH v2 07/22] ARM: dt: tegra114: iommu: Add "nvidia,swgroups" Hiroshi Doyu
2013-07-05 10:44 ` [PATCH v2 08/22] ARM: dt: tegra114: Add "nvidia,memory-client" Hiroshi Doyu
2013-07-05 10:44 ` [PATCH v2 09/22] amba: Move AHB to core_initcall Hiroshi Doyu
2013-07-16 23:20 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 10/22] iommu/tegra: smmu: Move IOMMU " Hiroshi Doyu
2013-07-16 23:21 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 11/22] iommu/tegra: smmu: Add Tegra 114 support Hiroshi Doyu
2013-07-18 20:01 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 12/22] iommu/tegra: smmu: Select ARM_DMA_USE_IOMMU in Kconfig Hiroshi Doyu
2013-07-05 10:44 ` [PATCH v2 13/22] iommu/tegra: smmu: Create default IOVA maps Hiroshi Doyu
2013-07-18 20:10 ` Stephen Warren
2013-07-29 11:24 ` Hiroshi Doyu
2013-07-29 17:50 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 14/22] iommu/tegra: smmu: Register platform_device to IOMMU dynamically Hiroshi Doyu
2013-07-18 20:17 ` Stephen Warren
2013-07-29 11:27 ` Hiroshi Doyu
2013-07-29 17:54 ` Stephen Warren
2013-07-30 5:18 ` Hiroshi Doyu
2013-07-05 10:44 ` [PATCH v2 15/22] iommu/tegra: smmu: Calculate ASID register offset by ID Hiroshi Doyu
2013-07-18 20:18 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 16/22] iommu/tegra: smmu: Get "nvidia,swgroup" from DT Hiroshi Doyu
2013-07-18 20:28 ` Stephen Warren
2013-07-29 11:39 ` Hiroshi Doyu
2013-07-29 18:00 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 17/22] iommu/tegra: smmu: Unfied driver for Tegra SoCs Hiroshi Doyu
2013-07-05 10:44 ` [PATCH v2 18/22] iommu/tegra: smmu: Use dt-bindings MACRO Hiroshi Doyu
2013-07-18 20:30 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 19/22] iommu/tegra: smmu: Workaround PCIe IOMMU'able Hiroshi Doyu
2013-07-18 20:33 ` Stephen Warren
2013-07-05 10:44 ` [PATCH v2 20/22] iommu/tegra: smmu: Get "nvidia, memory-client" from DT Hiroshi Doyu
2013-07-18 20:40 ` [PATCH v2 20/22] iommu/tegra: smmu: Get "nvidia,memory-client" " Stephen Warren
2013-07-05 10:44 ` [PATCH v2 21/22] iommu/tegra: smmu: Support Multiple ASID Hiroshi Doyu
2013-07-18 20:43 ` Stephen Warren [this message]
2013-07-29 10:31 ` Hiroshi Doyu
2013-07-29 17:41 ` Stephen Warren
2013-07-30 5:22 ` Hiroshi Doyu
2013-07-05 10:44 ` [PATCH v2 22/22] ARM: dma-mapping: Drop GFP_COMP for DMA memory allocations Hiroshi Doyu
2013-07-18 20:45 ` Stephen Warren
2013-07-05 11:03 ` [PATCH v2 00/22] Unified SMMU driver among Tegra SoCs Marc Dietrich
2013-07-05 11:08 ` Hiroshi Doyu
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