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https://gitlab.com/qemu-project/openbios.git
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c619e7c4a1
Signed-off-by: Laurent Vivier <Laurent@lvivier.info> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://coreboot.org/openbios/openbios-devel@254 f158a5a8-5612-0410-a976-696ce0be7e32
147 lines
3.3 KiB
C
147 lines
3.3 KiB
C
#ifndef _ASM_IO_H
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#define _ASM_IO_H
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#include "asm/types.h"
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extern unsigned long virt_offset;
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#define phys_to_virt(phys) ((void *) ((unsigned long) (phys) - virt_offset))
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#define virt_to_phys(virt) ((unsigned long) (virt) + virt_offset)
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#ifndef BOOTSTRAP
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extern uint32_t isa_io_base;
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/*
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* The insw/outsw/insl/outsl macros don't do byte-swapping.
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* They are only used in practice for transferring buffers which
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* are arrays of bytes, and byte-swapping is not appropriate in
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* that case. - paulus
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*/
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#define insw(port, buf, ns) _insw((uint16_t *)((port)+isa_io_base), (buf), (ns))
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#define outsw(port, buf, ns) _outsw((uint16_t *)((port)+isa_io_base), (buf), (ns))
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#define inb(port) in_8((uint8_t *)((port)+isa_io_base))
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#define outb(val, port) out_8((uint8_t *)((port)+isa_io_base), (val))
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#define inw(port) in_le16((uint16_t *)((port)+isa_io_base))
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#define outw(val, port) out_le16((uint16_t *)((port)+isa_io_base), (val))
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#define inl(port) in_le32((uint32_t *)((port)+isa_io_base))
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#define outl(val, port) out_le32((uint32_t *)((port)+isa_io_base), (val))
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/*
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* 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
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*/
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static inline int in_8(volatile unsigned char *addr)
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{
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int ret;
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__asm__ __volatile__("lbz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
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return ret;
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}
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static inline void out_8(volatile unsigned char *addr, int val)
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{
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__asm__ __volatile__("stb%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
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}
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static inline int in_le16(volatile unsigned short *addr)
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{
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int ret;
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__asm__ __volatile__("lhbrx %0,0,%1; eieio":"=r"(ret):
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"r"(addr), "m"(*addr));
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return ret;
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}
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static inline int in_be16(volatile unsigned short *addr)
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{
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int ret;
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__asm__ __volatile__("lhz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
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return ret;
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}
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static inline void out_le16(volatile unsigned short *addr, int val)
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{
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__asm__ __volatile__("sthbrx %1,0,%2; eieio":"=m"(*addr):"r"(val),
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"r"(addr));
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}
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static inline void out_be16(volatile unsigned short *addr, int val)
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{
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__asm__ __volatile__("sth%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
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}
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static inline unsigned in_le32(volatile unsigned *addr)
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{
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unsigned ret;
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__asm__ __volatile__("lwbrx %0,0,%1; eieio":"=r"(ret):
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"r"(addr), "m"(*addr));
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return ret;
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}
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static inline unsigned in_be32(volatile unsigned *addr)
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{
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unsigned ret;
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__asm__ __volatile__("lwz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
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return ret;
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}
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static inline void out_le32(volatile unsigned *addr, int val)
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{
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__asm__ __volatile__("stwbrx %1,0,%2; eieio":"=m"(*addr):"r"(val),
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"r"(addr));
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}
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static inline void out_be32(volatile unsigned *addr, int val)
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{
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__asm__ __volatile__("stw%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
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}
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static inline void _insw_ns(volatile uint16_t * port, void *buf, int ns)
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{
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uint16_t *b = (uint16_t *) buf;
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while (ns > 0) {
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*b++ = in_le16(port);
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ns--;
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}
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}
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static inline void _outsw_ns(volatile uint16_t * port, const void *buf,
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int ns)
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{
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uint16_t *b = (uint16_t *) buf;
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while (ns > 0) {
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out_le16(port, *b++);
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ns--;
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}
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}
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static inline void _insw(volatile uint16_t * port, void *buf, int ns)
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{
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uint16_t *b = (uint16_t *) buf;
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while (ns > 0) {
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*b++ = in_be16(port);
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ns--;
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}
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}
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static inline void _outsw(volatile uint16_t * port, const void *buf,
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int ns)
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{
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uint16_t *b = (uint16_t *) buf;
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while (ns > 0) {
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out_be16(port, *b++);
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ns--;
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}
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}
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#endif
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#endif /* _ASM_IO_H */
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