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a8efebe719
Sandbox uses an API to map between addresses and pointers. This allows it to have (emulated) memory at zero and avoid arch-specific addressing details. It also allows memory-mapped peripherals to work. As an example, on many machines sandbox maps address 100 to pointer value 10000000. However this is not correct for ACPI, if sandbox starts another program (e.g EFI app) and passes it the tables. That app has no knowledge of sandbox's address mapping. So to make this work we want to store 10000000 as the value in the table. Add two new 'nomap' functions which clearly make this exeption to how sandbox works. This should allow EFI apps to access ACPI tables with sandbox, e.g. for testing purposes. Signed-off-by: Simon Glass <sjg@chromium.org> Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
251 lines
7.9 KiB
C
251 lines
7.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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*/
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#ifndef __SANDBOX_ASM_IO_H
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#define __SANDBOX_ASM_IO_H
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#include <linux/types.h>
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enum sandboxio_size_t {
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SB_SIZE_8,
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SB_SIZE_16,
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SB_SIZE_32,
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SB_SIZE_64,
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};
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void *phys_to_virt(phys_addr_t paddr);
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#define phys_to_virt phys_to_virt
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phys_addr_t virt_to_phys(void *vaddr);
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#define virt_to_phys virt_to_phys
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void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags);
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#define map_physmem map_physmem
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/*
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* Take down a mapping set up by map_physmem().
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*/
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void unmap_physmem(const void *vaddr, unsigned long flags);
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#define unmap_physmem unmap_physmem
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/* Map from a pointer to our RAM buffer */
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phys_addr_t map_to_sysmem(const void *ptr);
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unsigned long sandbox_read(const void *addr, enum sandboxio_size_t size);
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void sandbox_write(void *addr, unsigned int val, enum sandboxio_size_t size);
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#define readb(addr) sandbox_read((const void *)addr, SB_SIZE_8)
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#define readw(addr) sandbox_read((const void *)addr, SB_SIZE_16)
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#define readl(addr) sandbox_read((const void *)addr, SB_SIZE_32)
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#ifdef CONFIG_SANDBOX64
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#define readq(addr) sandbox_read((const void *)addr, SB_SIZE_64)
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#endif
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#define writeb(v, addr) sandbox_write((void *)addr, v, SB_SIZE_8)
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#define writew(v, addr) sandbox_write((void *)addr, v, SB_SIZE_16)
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#define writel(v, addr) sandbox_write((void *)addr, v, SB_SIZE_32)
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#ifdef CONFIG_SANDBOX64
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#define writeq(v, addr) sandbox_write((void *)addr, v, SB_SIZE_64)
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#endif
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/*
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* Clear and set bits in one shot. These macros can be used to clear and
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* set multiple bits in a register using a single call. These macros can
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* also be used to set a multiple-bit bit pattern using a mask, by
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* specifying the mask in the 'clear' parameter and the new bit pattern
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* in the 'set' parameter.
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*/
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#define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a)
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#define in_arch(type,endian,a) endian##_to_cpu(read##type(a))
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#define out_le64(a,v) out_arch(q,le64,a,v)
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#define out_le32(a,v) out_arch(l,le32,a,v)
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#define out_le16(a,v) out_arch(w,le16,a,v)
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#define in_le64(a) in_arch(q,le64,a)
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#define in_le32(a) in_arch(l,le32,a)
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#define in_le16(a) in_arch(w,le16,a)
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#define out_be32(a,v) out_arch(l,be32,a,v)
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#define out_be16(a,v) out_arch(w,be16,a,v)
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#define in_be32(a) in_arch(l,be32,a)
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#define in_be16(a) in_arch(w,be16,a)
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#define out_8(a,v) writeb(v,a)
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#define in_8(a) readb(a)
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#define clrbits(type, addr, clear) \
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out_##type((addr), in_##type(addr) & ~(clear))
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#define setbits(type, addr, set) \
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out_##type((addr), in_##type(addr) | (set))
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#define clrsetbits(type, addr, clear, set) \
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out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
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#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
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#define setbits_be32(addr, set) setbits(be32, addr, set)
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#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
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#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
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#define setbits_le32(addr, set) setbits(le32, addr, set)
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#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
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#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
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#define setbits_be16(addr, set) setbits(be16, addr, set)
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#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
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#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
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#define setbits_le16(addr, set) setbits(le16, addr, set)
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#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
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#define clrbits_8(addr, clear) clrbits(8, addr, clear)
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#define setbits_8(addr, set) setbits(8, addr, set)
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#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
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/* I/O access functions */
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int _inl(unsigned int addr);
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int _inw(unsigned int addr);
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int _inb(unsigned int addr);
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void _outl(unsigned int value, unsigned int addr);
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void _outw(unsigned int value, unsigned int addr);
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void _outb(unsigned int value, unsigned int addr);
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#define inb(port) _inb((uintptr_t)(port))
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#define inw(port) _inw((uintptr_t)(port))
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#define inl(port) _inl((uintptr_t)(port))
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#define outb(val, port) _outb(val, (uintptr_t)(port))
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#define outw(val, port) _outw(val, (uintptr_t)(port))
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#define outl(val, port) _outl(val, (uintptr_t)(port))
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#define out_arch(type,endian,a,v) write##type(cpu_to_##endian(v),a)
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#define in_arch(type,endian,a) endian##_to_cpu(read##type(a))
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#define out_le32(a,v) out_arch(l,le32,a,v)
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#define out_le16(a,v) out_arch(w,le16,a,v)
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#define in_le32(a) in_arch(l,le32,a)
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#define in_le16(a) in_arch(w,le16,a)
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#define out_be32(a,v) out_arch(l,be32,a,v)
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#define out_be16(a,v) out_arch(w,be16,a,v)
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#define in_be32(a) in_arch(l,be32,a)
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#define in_be16(a) in_arch(w,be16,a)
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#define out_8(a,v) writeb(v,a)
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#define in_8(a) readb(a)
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#define clrbits(type, addr, clear) \
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out_##type((addr), in_##type(addr) & ~(clear))
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#define setbits(type, addr, set) \
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out_##type((addr), in_##type(addr) | (set))
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#define clrsetbits(type, addr, clear, set) \
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out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
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#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
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#define setbits_be32(addr, set) setbits(be32, addr, set)
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#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
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#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
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#define setbits_le32(addr, set) setbits(le32, addr, set)
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#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
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#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
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#define setbits_be16(addr, set) setbits(be16, addr, set)
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#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
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#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
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#define setbits_le16(addr, set) setbits(le16, addr, set)
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#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
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#define clrbits_8(addr, clear) clrbits(8, addr, clear)
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#define setbits_8(addr, set) setbits(8, addr, set)
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#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
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static inline void _insw(volatile u16 *port, void *buf, int ns)
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{
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}
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static inline void _outsw(volatile u16 *port, const void *buf, int ns)
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{
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}
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static inline void memset_io(volatile void *addr, unsigned char val, int count)
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{
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}
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static inline void memcpy_fromio(void *dst, const volatile void *src, int count)
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{
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}
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static inline void memcpy_toio(volatile void *dst, const void *src, int count)
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{
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}
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#define insw(port, buf, ns) _insw((u16 *)port, buf, ns)
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#define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns)
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/* IO space accessors */
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#define clrio(type, addr, clear) \
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out##type(in##type(addr) & ~(clear), (addr))
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#define setio(type, addr, set) \
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out##type(in##type(addr) | (set), (addr))
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#define clrsetio(type, addr, clear, set) \
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out##type((in##type(addr) & ~(clear)) | (set), (addr))
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#define clrio_32(addr, clear) clrio(l, addr, clear)
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#define clrio_16(addr, clear) clrio(w, addr, clear)
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#define clrio_8(addr, clear) clrio(b, addr, clear)
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#define setio_32(addr, set) setio(l, addr, set)
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#define setio_16(addr, set) setio(w, addr, set)
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#define setio_8(addr, set) setio(b, addr, set)
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#define clrsetio_32(addr, clear, set) clrsetio(l, addr, clear, set)
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#define clrsetio_16(addr, clear, set) clrsetio(w, addr, clear, set)
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#define clrsetio_8(addr, clear, set) clrsetio(b, addr, clear, set)
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#include <iotrace.h>
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#include <asm/types.h>
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#include <asm-generic/io.h>
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/* For sandbox, we want addresses to point into our RAM buffer */
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static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
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{
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return map_physmem(paddr, len, MAP_WRBACK);
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}
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/* Remove a previous mapping */
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static inline void unmap_sysmem(const void *vaddr)
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{
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unmap_physmem(vaddr, MAP_WRBACK);
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}
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/**
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* nomap_sysmem() - pass through an address unchanged
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*
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* This is used to indicate an address which should NOT be mapped, e.g. in
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* SMBIOS tables. Using this function instead of a case shows that the sandbox
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* conversion has been done
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*/
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static inline void *nomap_sysmem(phys_addr_t paddr, unsigned long len)
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{
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return (void *)(uintptr_t)paddr;
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}
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static inline phys_addr_t nomap_to_sysmem(const void *ptr)
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{
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return (phys_addr_t)(uintptr_t)ptr;
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}
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#endif
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