linux-dev/drivers/acpi/arm64, branch master

iommu: Add gfp parameter to iommu_alloc_resv_region

2022-10-21T08:49:32Z

Add gfp parameter to iommu_alloc_resv_region() for the callers to specify the memory allocation behavior. Thus iommu_alloc_resv_region() could also be available in critical contexts. Signed-off-by: Lu Baolu Tested-by: Alex Williamson Link: https://lore.kernel.org/r/20220927053109.4053662-2-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel

ACPI: scan: Support multiple DMA windows with different offsets

2022-09-24T16:39:21Z

In DT systems configurations, of_dma_get_range() returns struct bus_dma_region DMA regions; they are used to set-up devices DMA windows with different offset available for translation between DMA address and CPU address. In ACPI systems configuration, acpi_dma_get_range() does not return DMA regions yet and that precludes setting up the dev->dma_range_map pointer and therefore DMA regions with multiple offsets. Update acpi_dma_get_range() to return struct bus_dma_region DMA regions like of_dma_get_range() does. After updating acpi_dma_get_range(), acpi_arch_dma_setup() is changed for ARM64, where the original dma_addr and size are removed as these arguments are now redundant, and pass 0 and U64_MAX for dma_base and size of arch_setup_dma_ops; this is a simplification consistent with what other ACPI architectures also pass to iommu_setup_dma_ops(). Reviewed-by: Robin Murphy Signed-off-by: Jianmin Lv Reviewed-by: Lorenzo Pieralisi Signed-off-by: Rafael J. Wysocki

ACPI/IORT: Fix build error implicit-function-declaration

2022-07-29T08:20:49Z

If CONFIG_ACPI_IORT=y and CONFIG_IOMMU_API is not set, make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-, will be failed, like this: drivers/acpi/arm64/iort.c: In function ‘iort_get_rmr_sids’: drivers/acpi/arm64/iort.c:1406:2: error: implicit declaration of function ‘iort_iommu_rmr_get_resv_regions’; did you mean ‘iort_iommu_get_resv_regions’? [-Werror=implicit-function-declaration] iort_iommu_rmr_get_resv_regions(iommu_fwnode, NULL, head); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ iort_iommu_get_resv_regions cc1: some warnings being treated as errors make[3]: *** [drivers/acpi/arm64/iort.o] Error 1 The function iort_iommu_rmr_get_resv_regions() is declared under CONFIG_IOMMU_API, and the callers of iort_get_rmr_sids() and iort_put_rmr_sids() would select IOMMU_API. To fix this error, move the definitions to #ifdef CONFIG_IOMMU_API. Fixes: e302eea8f497 ("ACPI/IORT: Add a helper to retrieve RMR info directly") Signed-off-by: Ren Zhijie Acked-by: Hanjun Guo Link: https://lore.kernel.org/r/20220726033520.47865-1-renzhijie2@huawei.com Signed-off-by: Joerg Roedel

ACPI/IORT: Add a helper to retrieve RMR info directly

2022-07-06T10:51:11Z

This will provide a way for SMMU drivers to retrieve StreamIDs associated with IORT RMR nodes and use that to set bypass settings for those IDs. Tested-by: Steven Price Tested-by: Laurentiu Tudor Tested-by: Hanjun Guo Reviewed-by: Hanjun Guo Signed-off-by: Shameer Kolothum Acked-by: Robin Murphy Link: https://lore.kernel.org/r/20220615101044.1972-6-shameerali.kolothum.thodi@huawei.com Signed-off-by: Joerg Roedel

ACPI/IORT: Add support to retrieve IORT RMR reserved regions

2022-07-06T10:51:10Z

Parse through the IORT RMR nodes and populate the reserve region list corresponding to a given IOMMU and device(optional). Also, go through the ID mappings of the RMR node and retrieve all the SIDs associated with it. Reviewed-by: Lorenzo Pieralisi Tested-by: Steven Price Tested-by: Laurentiu Tudor Tested-by: Hanjun Guo Reviewed-by: Hanjun Guo Signed-off-by: Shameer Kolothum Acked-by: Robin Murphy Link: https://lore.kernel.org/r/20220615101044.1972-5-shameerali.kolothum.thodi@huawei.com Signed-off-by: Joerg Roedel

ACPI/IORT: Provide a generic helper to retrieve reserve regions

2022-07-06T10:51:10Z

Currently IORT provides a helper to retrieve HW MSI reserve regions. Change this to a generic helper to retrieve any IORT related reserve regions. This will be useful when we add support for RMR nodes in subsequent patches. [Lorenzo: For ACPI IORT] Reviewed-by: Lorenzo Pieralisi Reviewed-by: Christoph Hellwig Tested-by: Steven Price Tested-by: Laurentiu Tudor Tested-by: Hanjun Guo Reviewed-by: Hanjun Guo Signed-off-by: Shameer Kolothum Acked-by: Robin Murphy Link: https://lore.kernel.org/r/20220615101044.1972-4-shameerali.kolothum.thodi@huawei.com Signed-off-by: Joerg Roedel

ACPI/IORT: Make iort_iommu_msi_get_resv_regions() return void

2022-07-06T10:51:10Z

At present iort_iommu_msi_get_resv_regions() returns the number of MSI reserved regions on success and there are no users for this. The reserved region list will get populated anyway for platforms that require the HW MSI region reservation. Hence, change the function to return void instead. Reviewed-by: Christoph Hellwig Tested-by: Steven Price Tested-by: Laurentiu Tudor Reviewed-by: Hanjun Guo Signed-off-by: Shameer Kolothum Acked-by: Robin Murphy Link: https://lore.kernel.org/r/20220615101044.1972-3-shameerali.kolothum.thodi@huawei.com Signed-off-by: Joerg Roedel

ACPI: AGDI: Fix missing prototype warning for acpi_agdi_init()

2022-05-06T18:35:44Z

When building with W=1, we get the following warning: drivers/acpi/arm64/agdi.c:88:13: warning: no previous prototype for ‘acpi_agdi_init’ [-Wmissing-prototypes] void __init acpi_agdi_init(void) Include AGDI driver's header file to pull in the prototype definition for acpi_agdi_init() to get rid of the compiler warning Fixes: a2a591fb76e6 ("ACPI: AGDI: Add driver for Arm Generic Diagnostic Dump and Reset device") Reported-by: kernel test robot Signed-off-by: Ilkka Koskinen Signed-off-by: Rafael J. Wysocki

ACPI: AGDI: Add driver for Arm Generic Diagnostic Dump and Reset device

2022-03-10T19:17:28Z

ACPI for Arm Components 1.1 Platform Design Document v1.1 [0] specifices Arm Generic Diagnostic Device Interface (AGDI). It allows an admin to issue diagnostic dump and reset via an SDEI event or an interrupt. This patch implements SDEI path. [0] https://developer.arm.com/documentation/den0093/latest/ Signed-off-by: Ilkka Koskinen Reviewed-by: Russell King (Oracle) Acked-by: Lorenzo Pieralisi Signed-off-by: Rafael J. Wysocki

ACPI/IORT: Check node revision for PMCG resources

2022-02-09T18:16:22Z

The original version of the IORT PMCG definition had an oversight wherein there was no way to describe the second register page for an implementation using the recommended RELOC_CTRS feature. Although the spec was fixed, and the final patches merged to ACPICA and Linux written against the new version, it seems that some old firmware based on the original revision has survived and turned up in the wild. Add a check for the original PMCG definition, and avoid filling in the second memory resource with nonsense if so. Otherwise it is likely that something horrible will happen when the PMCG driver attempts to probe. Reported-by: Michael Petlan Fixes: 24e516049360 ("ACPI/IORT: Add support for PMCG") Cc: # 5.2.x Signed-off-by: Robin Murphy Acked-by: Lorenzo Pieralisi Link: https://lore.kernel.org/r/75628ae41c257fb73588f7bf1c4459160e04be2b.1643916258.git.robin.murphy@arm.com Signed-off-by: Catalin Marinas