diff options
Diffstat (limited to 'qemu/roms/openbios/include/arch/ppc/io.h')
| -rw-r--r-- | qemu/roms/openbios/include/arch/ppc/io.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/qemu/roms/openbios/include/arch/ppc/io.h b/qemu/roms/openbios/include/arch/ppc/io.h new file mode 100644 index 000000000..3449c5bf0 --- /dev/null +++ b/qemu/roms/openbios/include/arch/ppc/io.h @@ -0,0 +1,208 @@ +#ifndef _ASM_IO_H +#define _ASM_IO_H + +#include "asm/types.h" + +#define NO_QEMU_PROTOS +#include "arch/common/fw_cfg.h" + +extern char _start, _end; +extern unsigned long virt_offset; + +#define phys_to_virt(phys) ((void *) ((unsigned long) (phys) - virt_offset)) +#define virt_to_phys(virt) ((unsigned long) (virt) + virt_offset) + +#ifndef BOOTSTRAP + +extern unsigned long isa_io_base; + +/* + * 8, 16 and 32 bit, big and little endian I/O operations, with barrier. + */ +static inline uint8_t in_8(volatile uint8_t *addr) +{ + uint8_t ret; + + __asm__ __volatile__("lbz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr)); + return ret; +} + +static inline void out_8(volatile uint8_t *addr, uint8_t val) +{ + __asm__ __volatile__("stb%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val)); +} + +static inline uint16_t in_le16(volatile uint16_t *addr) +{ + uint16_t ret; + + __asm__ __volatile__("lhbrx %0,0,%1; eieio":"=r"(ret): + "r"(addr), "m"(*addr)); + return ret; +} + +static inline uint16_t in_be16(volatile uint16_t *addr) +{ + uint16_t ret; + + __asm__ __volatile__("lhz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr)); + return ret; +} + +static inline void out_le16(volatile uint16_t *addr, uint16_t val) +{ + __asm__ __volatile__("sthbrx %1,0,%2; eieio":"=m"(*addr):"r"(val), + "r"(addr)); +} + +static inline void out_be16(volatile uint16_t *addr, uint16_t val) +{ + __asm__ __volatile__("sth%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val)); +} + +static inline uint32_t in_le32(volatile uint32_t *addr) +{ + uint32_t ret; + + __asm__ __volatile__("lwbrx %0,0,%1; eieio":"=r"(ret): + "r"(addr), "m"(*addr)); + return ret; +} + +static inline uint32_t in_be32(volatile uint32_t *addr) +{ + uint32_t ret; + + __asm__ __volatile__("lwz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr)); + return ret; +} + +static inline void out_le32(volatile uint32_t *addr, uint32_t val) +{ + __asm__ __volatile__("stwbrx %1,0,%2; eieio":"=m"(*addr):"r"(val), + "r"(addr)); +} + +static inline void out_be32(volatile unsigned *addr, uint32_t val) +{ + __asm__ __volatile__("stw%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val)); +} + +static inline void _insw_ns(volatile uint16_t * port, void *buf, int ns) +{ + uint16_t *b = (uint16_t *) buf; + + while (ns > 0) { + *b++ = in_le16(port); + ns--; + } +} + +static inline void _outsw_ns(volatile uint16_t * port, const void *buf, + int ns) +{ + uint16_t *b = (uint16_t *) buf; + + while (ns > 0) { + out_le16(port, *b++); + ns--; + } +} + +static inline void _insw(volatile uint16_t * port, void *buf, int ns) +{ + uint16_t *b = (uint16_t *) buf; + + while (ns > 0) { + *b++ = in_be16(port); + ns--; + } +} + +static inline void _outsw(volatile uint16_t * port, const void *buf, + int ns) +{ + uint16_t *b = (uint16_t *) buf; + + while (ns > 0) { + out_be16(port, *b++); + ns--; + } +} + + +/* + * The insw/outsw/insl/outsl functions don't do byte-swapping. + * They are only used in practice for transferring buffers which + * are arrays of bytes, and byte-swapping is not appropriate in + * that case. - paulus + */ + +static inline void insw(uint16_t port, void *buf, int ns) +{ + _insw((uint16_t *)(port + isa_io_base), buf, ns); +} + +static inline void outsw(uint16_t port, void *buf, int ns) +{ + _outsw((uint16_t *)(port + isa_io_base), buf, ns); +} + + +static inline uint8_t inb(uint16_t port) +{ + return in_8((uint8_t *)(port + isa_io_base)); +} + +static inline void outb(uint8_t val, uint16_t port) +{ + out_8((uint8_t *)(port + isa_io_base), val); +} + +static inline uint16_t inw(uint16_t port) +{ + return in_le16((uint16_t *)(port + isa_io_base)); +} + +static inline void outw(uint16_t val, uint16_t port) +{ + out_le16((uint16_t *)(port + isa_io_base), val); +} + +static inline uint32_t inl(uint16_t port) +{ + return in_le32((uint32_t *)(port + isa_io_base)); +} + +static inline void outl(uint32_t val, uint16_t port) +{ + out_le32((uint32_t *)(port + isa_io_base), val); +} + +#else /* BOOTSTRAP */ +#ifdef FCOMPILER +#define inb(reg) ((u8)0xff) +#define inw(reg) ((u16)0xffff) +#define inl(reg) ((u32)0xffffffff) +#define outb(reg, val) do{} while(0) +#define outw(reg, val) do{} while(0) +#define outl(reg, val) do{} while(0) +#else +extern u8 inb(u32 reg); +extern u16 inw(u32 reg); +extern u32 inl(u32 reg); +extern void insw(u32 reg, void *addr, unsigned long count); +extern void outb(u32 reg, u8 val); +extern void outw(u32 reg, u16 val); +extern void outl(u32 reg, u32 val); +extern void outsw(u32 reg, const void *addr, unsigned long count); +#endif +#endif + +#if defined(CONFIG_QEMU) +#define FW_CFG_ARCH_WIDTH (FW_CFG_ARCH_LOCAL + 0x00) +#define FW_CFG_ARCH_HEIGHT (FW_CFG_ARCH_LOCAL + 0x01) +#define FW_CFG_ARCH_DEPTH (FW_CFG_ARCH_LOCAL + 0x02) +#endif + +#endif /* _ASM_IO_H */ |