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Annotation of qemu/roms/openbios/include/arch/sparc32/io.h, revision 1.1

1.1     ! root        1: #ifndef _ASM_IO_H
        !             2: #define _ASM_IO_H
        !             3: 
        !             4: #include "asm/types.h"
        !             5: 
        !             6: extern unsigned int va_shift; // Set in entry.S
        !             7: 
        !             8: // Defined in ldscript
        !             9: extern char _start, _data, _stack, _estack, _end, _vmem, _evmem, _iomem;
        !            10: 
        !            11: // XXX check use and merge
        !            12: #define phys_to_virt(phys) ((void *) ((unsigned long) (phys)))
        !            13: #define virt_to_phys(virt) ((unsigned long) (virt))
        !            14: 
        !            15: #ifndef BOOTSTRAP
        !            16: 
        !            17: #ifndef _IO_BASE
        !            18: #define _IO_BASE       0
        !            19: #endif
        !            20: 
        !            21: /*
        !            22:  * The insw/outsw/insl/outsl macros don't do byte-swapping.
        !            23:  * They are only used in practice for transferring buffers which
        !            24:  * are arrays of bytes, and byte-swapping is not appropriate in
        !            25:  * that case.  - paulus
        !            26:  */
        !            27: #define insw(port, buf, ns)    _insw_ns((uint16_t *)((port)+_IO_BASE), (buf), (ns))
        !            28: #define outsw(port, buf, ns)   _outsw_ns((uint16_t *)((port)+_IO_BASE), (buf), (ns))
        !            29: 
        !            30: #define inb(port)              in_8((uint8_t *)((port)+_IO_BASE))
        !            31: #define outb(val, port)                out_8((uint8_t *)((port)+_IO_BASE), (val))
        !            32: #define inw(port)              in_le16((uint16_t *)((port)+_IO_BASE))
        !            33: #define outw(val, port)                out_le16((uint16_t *)((port)+_IO_BASE), (val))
        !            34: #define inl(port)              in_le32((uint32_t *)((port)+_IO_BASE))
        !            35: #define outl(val, port)                out_le32((uint32_t *)((port)+_IO_BASE), (val))
        !            36: 
        !            37: /*
        !            38:  * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
        !            39:  */
        !            40: static inline int in_8(volatile unsigned char *addr)
        !            41: {
        !            42:     int ret;
        !            43: 
        !            44:     __asm__ __volatile__("ldub [%1], %0\n\t"
        !            45:                          "stbar\n\t"
        !            46:                          :"=r"(ret):"r"(addr):"memory");
        !            47: 
        !            48:     return ret;
        !            49: }
        !            50: 
        !            51: static inline void out_8(volatile unsigned char *addr, int val)
        !            52: {
        !            53:     __asm__ __volatile__("stb %0, [%1]\n\t"
        !            54:                          "stbar\n\t"
        !            55:                          : : "r"(val), "r"(addr):"memory");
        !            56: }
        !            57: 
        !            58: static inline int in_le16(volatile unsigned short *addr)
        !            59: {
        !            60:     int ret;
        !            61: 
        !            62:     // XXX
        !            63:     __asm__ __volatile__("lduh [%1], %0\n\t"
        !            64:                          "stbar\n\t"
        !            65:                          :"=r"(ret):"r"(addr):"memory");
        !            66: 
        !            67:     return ret;
        !            68: }
        !            69: 
        !            70: static inline int in_be16(volatile unsigned short *addr)
        !            71: {
        !            72:     int ret;
        !            73: 
        !            74:     __asm__ __volatile__("lduh [%1], %0\n\t"
        !            75:                          "stbar\n\t"
        !            76:                          :"=r"(ret):"r"(addr):"memory");
        !            77: 
        !            78:     return ret;
        !            79: }
        !            80: 
        !            81: static inline void out_le16(volatile unsigned short *addr, int val)
        !            82: {
        !            83:     // XXX
        !            84:     __asm__ __volatile__("sth %0, [%1]\n\t"
        !            85:                          "stbar\n\t"
        !            86:                          : : "r"(val), "r"(addr):"memory");
        !            87: }
        !            88: 
        !            89: static inline void out_be16(volatile unsigned short *addr, int val)
        !            90: {
        !            91:     __asm__ __volatile__("sth %0, [%1]\n\t"
        !            92:                          "stbar\n\t"
        !            93:                          : : "r"(val), "r"(addr):"memory");
        !            94: }
        !            95: 
        !            96: static inline unsigned in_le32(volatile unsigned *addr)
        !            97: {
        !            98:     unsigned ret;
        !            99: 
        !           100:     // XXX
        !           101:     __asm__ __volatile__("ld [%1], %0\n\t"
        !           102:                          "stbar\n\t"
        !           103:                          :"=r"(ret):"r"(addr):"memory");
        !           104: 
        !           105:     return ret;
        !           106: }
        !           107: 
        !           108: static inline unsigned in_be32(volatile unsigned *addr)
        !           109: {
        !           110:     unsigned ret;
        !           111: 
        !           112:     __asm__ __volatile__("ld [%1], %0\n\t"
        !           113:                          "stbar\n\t"
        !           114:                          :"=r"(ret):"r"(addr):"memory");
        !           115: 
        !           116:     return ret;
        !           117: }
        !           118: 
        !           119: static inline void out_le32(volatile unsigned *addr, int val)
        !           120: {
        !           121:     // XXX
        !           122:     __asm__ __volatile__("st %0, [%1]\n\t"
        !           123:                          "stbar\n\t"
        !           124:                          : : "r"(val), "r"(addr):"memory");
        !           125: }
        !           126: 
        !           127: static inline void out_be32(volatile unsigned *addr, int val)
        !           128: {
        !           129:     __asm__ __volatile__("st %0, [%1]\n\t"
        !           130:                          "stbar\n\t"
        !           131:                          : : "r"(val), "r"(addr):"memory");
        !           132: }
        !           133: 
        !           134: static inline void _insw_ns(volatile uint16_t * port, void *buf, int ns)
        !           135: {
        !           136:        uint16_t *b = (uint16_t *) buf;
        !           137: 
        !           138:        while (ns > 0) {
        !           139:                *b++ = in_le16(port);
        !           140:                ns--;
        !           141:        }
        !           142: }
        !           143: 
        !           144: static inline void _outsw_ns(volatile uint16_t * port, const void *buf,
        !           145:                             int ns)
        !           146: {
        !           147:        uint16_t *b = (uint16_t *) buf;
        !           148: 
        !           149:        while (ns > 0) {
        !           150:                out_le16(port, *b++);
        !           151:                ns--;
        !           152:        }
        !           153: }
        !           154: 
        !           155: static inline void _insw(volatile uint16_t * port, void *buf, int ns)
        !           156: {
        !           157:        uint16_t *b = (uint16_t *) buf;
        !           158: 
        !           159:        while (ns > 0) {
        !           160:                *b++ = in_be16(port);
        !           161:                ns--;
        !           162:        }
        !           163: }
        !           164: 
        !           165: static inline void _outsw(volatile uint16_t * port, const void *buf,
        !           166:                          int ns)
        !           167: {
        !           168:        uint16_t *b = (uint16_t *) buf;
        !           169: 
        !           170:        while (ns > 0) {
        !           171:                out_be16(port, *b++);
        !           172:                ns--;
        !           173:        }
        !           174: }
        !           175: #else /* BOOTSTRAP */
        !           176: #ifdef FCOMPILER
        !           177: #define inb(reg) ((u8)0xff)
        !           178: #define inw(reg) ((u16)0xffff)
        !           179: #define inl(reg) ((u32)0xffffffff)
        !           180: #define outb(reg, val) do{} while(0)
        !           181: #define outw(reg, val) do{} while(0)
        !           182: #define outl(reg, val) do{} while(0)
        !           183: #else
        !           184: extern u8 inb(u32 reg);
        !           185: extern u16 inw(u32 reg);
        !           186: extern u32 inl(u32 reg);
        !           187: extern void insw(u32 reg, void *addr, unsigned long count);
        !           188: extern void outb(u32 reg, u8 val);
        !           189: extern void outw(u32 reg, u16 val);
        !           190: extern void outl(u32 reg, u32 val);
        !           191: extern void outsw(u32 reg, const void *addr, unsigned long count);
        !           192: #endif
        !           193: #endif
        !           194: #endif /* _ASM_IO_H */

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