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https://github.com/brain-hackers/u-boot-brain
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37217f0e0a
dma_addr_t holds any valid DMA address. If the DMA API only uses 32-bit addresses, dma_addr_t need only be 32 bits wide. Bus addresses, e.g., PCI BARs, may be wider than 32 bits, but drivers do memory-mapped I/O to ioremapped kernel virtual addresses, so they don't care about the size of the actual bus addresses. Also 32 bit ARM systems with LPAE enabled can use 64bit address space, but DMA still use 32bit address like in case of DRA7 and Keystone platforms. This is inspired from the Linux kernel types implementation[1] [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/include/linux/types.h#n142 Acked-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
#ifndef __ASM_ARM_TYPES_H
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#define __ASM_ARM_TYPES_H
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typedef unsigned short umode_t;
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/*
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* __xx is ok: it doesn't pollute the POSIX namespace. Use these in the
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* header files exported to user space
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*/
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typedef __signed__ char __s8;
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typedef unsigned char __u8;
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typedef __signed__ short __s16;
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typedef unsigned short __u16;
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typedef __signed__ int __s32;
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typedef unsigned int __u32;
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#if defined(__GNUC__)
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__extension__ typedef __signed__ long long __s64;
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__extension__ typedef unsigned long long __u64;
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#endif
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/*
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* These aren't exported outside the kernel to avoid name space clashes
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*/
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#ifdef __KERNEL__
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typedef signed char s8;
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typedef unsigned char u8;
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typedef signed short s16;
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typedef unsigned short u16;
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typedef signed int s32;
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typedef unsigned int u32;
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typedef signed long long s64;
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typedef unsigned long long u64;
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#ifdef CONFIG_ARM64
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#define BITS_PER_LONG 64
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#else /* CONFIG_ARM64 */
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#define BITS_PER_LONG 32
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#endif /* CONFIG_ARM64 */
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#ifdef CONFIG_PHYS_64BIT
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typedef unsigned long long phys_addr_t;
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typedef unsigned long long phys_size_t;
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#else
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/* DMA addresses are 32-bits wide */
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typedef unsigned long phys_addr_t;
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typedef unsigned long phys_size_t;
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#endif
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/*
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* A dma_addr_t can hold any valid DMA address, i.e., any address returned
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* by the DMA API.
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*
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* If the DMA API only uses 32-bit addresses, dma_addr_t need only be 32
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* bits wide. Bus addresses, e.g., PCI BARs, may be wider than 32 bits,
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* but drivers do memory-mapped I/O to ioremapped kernel virtual addresses,
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* so they don't care about the size of the actual bus addresses.
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*/
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#ifdef CONFIG_DMA_ADDR_T_64BIT
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typedef unsigned long long dma_addr_t;
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#else
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typedef u32 dma_addr_t;
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#endif
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#endif /* __KERNEL__ */
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typedef unsigned long resource_size_t;
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#endif
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