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Annotation of qemu/roms/openbios/include/arch/sparc64/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: #include "asi.h"
        !             6: 
        !             7: #define NO_QEMU_PROTOS
        !             8: #include "arch/common/fw_cfg.h"
        !             9: 
        !            10: extern unsigned long va_shift; // Set in entry.S
        !            11: // Defined in ldscript
        !            12: extern char _start, _data, _stack, _estack, _end, _vmem, _evmem, _iomem;
        !            13: 
        !            14: // XXX check use and merge
        !            15: #define phys_to_virt(phys) ((void *) ((unsigned long) (phys)))
        !            16: #define virt_to_phys(virt) ((unsigned long) (virt))
        !            17: 
        !            18: #ifndef BOOTSTRAP
        !            19: 
        !            20: extern unsigned long isa_io_base;
        !            21: 
        !            22: /*
        !            23:  * The insw/outsw/insl/outsl macros don't do byte-swapping.
        !            24:  * They are only used in practice for transferring buffers which
        !            25:  * are arrays of bytes, and byte-swapping is not appropriate in
        !            26:  * that case.  - paulus
        !            27:  */
        !            28: #define insw(port, buf, ns)    _insw_ns((uint16_t *)((port)+isa_io_base), (buf), (ns))
        !            29: #define outsw(port, buf, ns)   _outsw_ns((uint16_t *)((port)+isa_io_base), (buf), (ns))
        !            30: 
        !            31: #define inb(port)              in_8((uint8_t *)((port)+isa_io_base))
        !            32: #define outb(val, port)                out_8((uint8_t *)((port)+isa_io_base), (val))
        !            33: #define inw(port)              in_be16((uint16_t *)((port)+isa_io_base))
        !            34: #define outw(val, port)                out_be16((uint16_t *)((port)+isa_io_base), (val))
        !            35: #define inl(port)              in_be32((uint32_t *)((port)+isa_io_base))
        !            36: #define outl(val, port)                out_be32((uint32_t *)((port)+isa_io_base), (val))
        !            37: 
        !            38: /*
        !            39:  * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
        !            40:  * On Sparc64, BE versions must swap bytes using LE access ASI.
        !            41:  */
        !            42: static inline int in_8(volatile unsigned char *addr)
        !            43: {
        !            44:     int ret;
        !            45: 
        !            46:     __asm__ __volatile__("lduba [%1] %2, %0\n\t"
        !            47:                          : "=r"(ret)
        !            48:                          : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
        !            49:                          : "memory");
        !            50: 
        !            51:     return ret;
        !            52: }
        !            53: 
        !            54: static inline void out_8(volatile unsigned char *addr, int val)
        !            55: {
        !            56:     __asm__ __volatile__("stba %0, [%1] %2\n\t"
        !            57:                          :
        !            58:                          : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
        !            59:                          : "memory");
        !            60: }
        !            61: 
        !            62: static inline int in_le16(volatile unsigned short *addr)
        !            63: {
        !            64:     int ret;
        !            65: 
        !            66:     __asm__ __volatile__("lduha [%1] %2, %0\n\t"
        !            67:                          : "=r"(ret)
        !            68:                          : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
        !            69:                          : "memory");
        !            70: 
        !            71:     return ret;
        !            72: }
        !            73: 
        !            74: static inline int in_be16(volatile unsigned short *addr)
        !            75: {
        !            76:     int ret;
        !            77: 
        !            78:     __asm__ __volatile__("lduha [%1] %2, %0\n\t"
        !            79:                          : "=r"(ret)
        !            80:                          : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
        !            81:                          : "memory");
        !            82: 
        !            83:     return ret;
        !            84: }
        !            85: 
        !            86: static inline void out_le16(volatile unsigned short *addr, int val)
        !            87: {
        !            88: 
        !            89:     __asm__ __volatile__("stha %0, [%1] %2\n\t"
        !            90:                          :
        !            91:                          : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
        !            92:                          : "memory");
        !            93: }
        !            94: 
        !            95: static inline void out_be16(volatile unsigned short *addr, int val)
        !            96: {
        !            97:     __asm__ __volatile__("stha %0, [%1] %2\n\t"
        !            98:                          :
        !            99:                          : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
        !           100:                          : "memory");
        !           101: }
        !           102: 
        !           103: static inline unsigned in_le32(volatile unsigned *addr)
        !           104: {
        !           105:     unsigned ret;
        !           106: 
        !           107:     __asm__ __volatile__("lduwa [%1] %2, %0\n\t"
        !           108:                          : "=r"(ret)
        !           109:                          : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
        !           110:                          : "memory");
        !           111: 
        !           112:     return ret;
        !           113: }
        !           114: 
        !           115: static inline unsigned in_be32(volatile unsigned *addr)
        !           116: {
        !           117:     unsigned ret;
        !           118: 
        !           119:     __asm__ __volatile__("lduwa [%1] %2, %0\n\t"
        !           120:                          : "=r"(ret)
        !           121:                          : "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
        !           122:                          : "memory");
        !           123:     return ret;
        !           124: }
        !           125: 
        !           126: static inline void out_le32(volatile unsigned *addr, int val)
        !           127: {
        !           128:     __asm__ __volatile__("stwa %0, [%1] %2\n\t"
        !           129:                          :
        !           130:                          : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E)
        !           131:                          : "memory");
        !           132: }
        !           133: 
        !           134: static inline void out_be32(volatile unsigned *addr, int val)
        !           135: {
        !           136:     __asm__ __volatile__("stwa %0, [%1] %2\n\t"
        !           137:                          :
        !           138:                          : "r"(val), "r"(addr), "i" (ASI_PHYS_BYPASS_EC_E_L)
        !           139:                          : "memory");
        !           140: }
        !           141: 
        !           142: static inline void _insw_ns(volatile uint16_t * port, void *buf, int ns)
        !           143: {
        !           144:        uint16_t *b = (uint16_t *) buf;
        !           145: 
        !           146:        while (ns > 0) {
        !           147:                *b++ = in_le16(port);
        !           148:                ns--;
        !           149:        }
        !           150: }
        !           151: 
        !           152: static inline void _outsw_ns(volatile uint16_t * port, const void *buf,
        !           153:                             int ns)
        !           154: {
        !           155:        uint16_t *b = (uint16_t *) buf;
        !           156: 
        !           157:        while (ns > 0) {
        !           158:                out_le16(port, *b++);
        !           159:                ns--;
        !           160:        }
        !           161: }
        !           162: 
        !           163: static inline void _insw(volatile uint16_t * port, void *buf, int ns)
        !           164: {
        !           165:        uint16_t *b = (uint16_t *) buf;
        !           166: 
        !           167:        while (ns > 0) {
        !           168:                *b++ = in_be16(port);
        !           169:                ns--;
        !           170:        }
        !           171: }
        !           172: 
        !           173: static inline void _outsw(volatile uint16_t * port, const void *buf,
        !           174:                          int ns)
        !           175: {
        !           176:        uint16_t *b = (uint16_t *) buf;
        !           177: 
        !           178:        while (ns > 0) {
        !           179:                out_be16(port, *b++);
        !           180:                ns--;
        !           181:        }
        !           182: }
        !           183: #else /* BOOTSTRAP */
        !           184: #ifdef FCOMPILER
        !           185: #define inb(reg) ((u8)0xff)
        !           186: #define inw(reg) ((u16)0xffff)
        !           187: #define inl(reg) ((u32)0xffffffff)
        !           188: #define outb(reg, val) do{} while(0)
        !           189: #define outw(reg, val) do{} while(0)
        !           190: #define outl(reg, val) do{} while(0)
        !           191: #else
        !           192: extern u8 inb(u32 reg);
        !           193: extern u16 inw(u32 reg);
        !           194: extern u32 inl(u32 reg);
        !           195: extern void insw(u32 reg, void *addr, unsigned long count);
        !           196: extern void outb(u32 reg, u8 val);
        !           197: extern void outw(u32 reg, u16 val);
        !           198: extern void outl(u32 reg, u32 val);
        !           199: extern void outsw(u32 reg, const void *addr, unsigned long count);
        !           200: #endif
        !           201: #endif
        !           202: 
        !           203: #if defined(CONFIG_QEMU)
        !           204: #define FW_CFG_ARCH_WIDTH        (FW_CFG_ARCH_LOCAL + 0x00)
        !           205: #define FW_CFG_ARCH_HEIGHT       (FW_CFG_ARCH_LOCAL + 0x01)
        !           206: #define FW_CFG_ARCH_DEPTH        (FW_CFG_ARCH_LOCAL + 0x02)
        !           207: #endif
        !           208: 
        !           209: #endif /* _ASM_IO_H */

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