ACPI: scan: Support multiple DMA windows with different offsets
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 <robin.murphy@arm.com> Signed-off-by:
Jianmin Lv <lvjianmin@loongson.cn> Reviewed-by:
Lorenzo Pieralisi <lpieralisi@kernel.org> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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