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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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652261a7a8
The acpi_os_ioremap() function may be used to map normal RAM or IO regions. The current implementation simply uses ioremap_cache(). This will work for some architectures, but arm64 ioremap_cache() cannot be used to map IO regions which don't support caching. So for arm64, use ioremap() for non-RAM regions. CC: Rafael J Wysocki <rjw@rjwysocki.net> CC: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Robert Richter <rrichter@cavium.com> Tested-by: Timur Tabi <timur@codeaurora.org> Acked-by: Robert Richter <rrichter@cavium.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Mark Salter <msalter@redhat.com> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
25 lines
647 B
C
25 lines
647 B
C
#ifndef _ACPI_IO_H_
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#define _ACPI_IO_H_
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#include <linux/io.h>
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#include <asm/acpi.h>
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#ifndef acpi_os_ioremap
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static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
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acpi_size size)
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{
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return ioremap_cache(phys, size);
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}
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#endif
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void __iomem *__init_refok
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acpi_os_map_iomem(acpi_physical_address phys, acpi_size size);
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void __ref acpi_os_unmap_iomem(void __iomem *virt, acpi_size size);
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void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size);
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int acpi_os_map_generic_address(struct acpi_generic_address *addr);
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void acpi_os_unmap_generic_address(struct acpi_generic_address *addr);
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#endif
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