BMC/Intel-BMC/linux.git/arch/arm64/include/asm/dma-mapping.h, branch dev

arm64 : Introduce support for ACPI _CCA object

2015-06-15T12:40:49+00:00

section 6.2.17 _CCA states that ARM platforms require ACPI _CCA object to be specified for DMA-cabpable devices. Therefore, this patch specifies ACPI_CCA_REQUIRED in arm64 Kconfig. In addition, to handle the case when _CCA is missing, arm64 would assign dummy_dma_ops to disable DMA capability of the device. Acked-by: Catalin Marinas Signed-off-by: Mark Salter Signed-off-by: Suravee Suthikulpanit Signed-off-by: Rafael J. Wysocki

arm64: Use bool function return values of true/false not 1/0

2015-03-31T15:28:44+00:00

Use the normal return values for bool functions Signed-off-by: Joe Perches Signed-off-by: Will Deacon

arm64: Combine coherent and non-coherent swiotlb dma_ops

2015-01-23T16:43:55+00:00

Since dev_archdata now has a dma_coherent state, combine the two coherent and non-coherent operations and remove their declaration, together with set_dma_ops, from the arch dma-mapping.h file. Acked-by: Will Deacon Signed-off-by: Catalin Marinas

arm64: Replace set_arch_dma_coherent_ops with arch_setup_dma_ops

2014-12-22T09:26:32+00:00

Commit a3a60f81ee6f (dma-mapping: replace set_arch_dma_coherent_ops with arch_setup_dma_ops) changes the of_dma_configure() arch dma_ops callback to arch_setup_dma_ops but only the arch/arm code is updated. Subsequent commit 97890ba9289c (dma-mapping: detect and configure IOMMU in of_dma_configure) changes the arch_setup_dma_ops() prototype further to handle iommu. The patch makes the corresponding arm64 changes. Signed-off-by: Catalin Marinas Reported-by: Arnd Bergmann Acked-by: Will Deacon

arm64: introduce is_device_dma_coherent

2014-12-04T12:41:49+00:00

Introduce a boolean flag and an accessor function to check whether a device is dma_coherent. Set the flag from set_arch_dma_coherent_ops. Signed-off-by: Stefano Stabellini Signed-off-by: Catalin Marinas Reviewed-by: Catalin Marinas

arm64: Implement set_arch_dma_coherent_ops() to replace bus notifiers

2014-09-22T10:48:31+00:00

Commit 6ecba8eb51b7 (arm64: Use bus notifiers to set per-device coherent DMA ops) introduced bus notifiers to set the coherent dma ops based on the 'dma-coherent' DT property. Since the generic of_dma_configure() handles this property for platform and AMBA devices, replace the notifiers with set_arch_dma_coherent_ops(). Signed-off-by: Catalin Marinas

arm64/dma: Removing ARCH_HAS_DMA_GET_REQUIRED_MASK macro

2014-06-18T11:41:30+00:00

Arm64 does not define dma_get_required_mask() function. Therefore, it should not define the ARCH_HAS_DMA_GET_REQUIRED_MASK. This causes build errors in some device drivers (e.g. mpt2sas) Signed-off-by: Suravee Suthikulpanit Signed-off-by: Catalin Marinas Cc:

arm64: Implement coherent DMA API based on swiotlb

2014-02-27T17:16:59+00:00

This patch adds support for DMA API cache maintenance on SoCs without hardware device cache coherency. Signed-off-by: Catalin Marinas

arm64/xen: get_dma_ops: return xen_dma_ops if we are running as xen_initial_domain

2013-10-18T16:01:32+00:00

We can't simply override arm_dma_ops with xen_dma_ops because devices are allowed to have their own dma_ops and they take precedence over arm_dma_ops. When running on Xen as initial domain, we always want xen_dma_ops to be the one in use. We introduce __generic_dma_ops to allow xen_dma_ops functions to call back to the native implementation. Signed-off-by: Stefano Stabellini Acked-by: Catalin Marinas CC: will.deacon@arm.com Changes in v7: - return xen_dma_ops only if we are the initial domain; - rename __get_dma_ops to __generic_dma_ops.

arm64: define DMA_ERROR_CODE

2013-10-15T15:49:03+00:00

Signed-off-by: Stefano Stabellini Acked-by: Catalin Marinas CC: will.deacon@arm.com Changes in v8: - cast to dma_addr_t before returning.