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author | wdenk <wdenk> | 2004-06-09 14:47:54 (GMT) |
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committer | wdenk <wdenk> | 2004-06-09 14:47:54 (GMT) |
commit | c3c7f861aef5abb5173f16af66c3941149954553 (patch) | |
tree | 7063ffd701c0ca6ab9ed60cf8587da866a49b6c2 /drivers/smc91111.c | |
parent | f39748ae8edb03017647b0d731cdd06e7bdcde13 (diff) | |
download | u-boot-c3c7f861aef5abb5173f16af66c3941149954553.tar.xz |
Patch by Yuli Barcohen, 20 May 2004:
Add support for Interphase iSPAN boards.
Diffstat (limited to 'drivers/smc91111.c')
-rw-r--r-- | drivers/smc91111.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/smc91111.c b/drivers/smc91111.c index 8b1103b..2a4f005 100644 --- a/drivers/smc91111.c +++ b/drivers/smc91111.c @@ -220,6 +220,77 @@ int get_rom_mac(char *v_rom_mac); ------------------------------------------------------------ */ +#ifdef CONFIG_SMC_USE_IOFUNCS +/* + * input and output functions + * + * Implemented due to inx,outx macros accessing the device improperly + * and putting the device into an unkown state. + * + * For instance, on Sharp LPD7A400 SDK, affects were chip memory + * could not be free'd (hence the alloc failures), duplicate packets, + * packets being corrupt (shifted) on the wire, etc. Switching to the + * inx,outx functions fixed this problem. + */ +static inline word SMC_inw(dword offset); +static inline void SMC_outw(word value, dword offset); +static inline byte SMC_inb(dword offset); +static inline void SMC_outb(byte value, dword offset); +static inline void SMC_insw(dword offset, volatile uchar* buf, dword len); +static inline void SMC_outsw(dword offset, uchar* buf, dword len); + +#define barrier() __asm__ __volatile__("": : :"memory") + +static inline word SMC_inw(dword offset) +{ + word v; + v = *((volatile word*)(SMC_BASE_ADDRESS+offset)); + barrier(); *(volatile u32*)(0xc0000000); + return v; +} + +static inline void SMC_outw(word value, dword offset) +{ + *((volatile word*)(SMC_BASE_ADDRESS+offset)) = value; + barrier(); *(volatile u32*)(0xc0000000); +} + +static inline byte SMC_inb(dword offset) +{ + word _w; + + _w = SMC_inw(offset & ~((dword)1)); + return (offset & 1) ? (byte)(_w >> 8) : (byte)(_w); +} + +static inline void SMC_outb(byte value, dword offset) +{ + word _w; + + _w = SMC_inw(offset & ~((dword)1)); + if (offset & 1) + *((volatile word*)(SMC_BASE_ADDRESS+(offset & ~((dword)1)))) = (value<<8) | (_w & 0x00ff); + else + *((volatile word*)(SMC_BASE_ADDRESS+offset)) = value | (_w & 0xff00); +} + +static inline void SMC_insw(dword offset, volatile uchar* buf, dword len) +{ + while (len-- > 0) { + *((word*)buf)++ = SMC_inw(offset); + barrier(); *((volatile u32*)(0xc0000000)); + } +} + +static inline void SMC_outsw(dword offset, uchar* buf, dword len) +{ + while (len-- > 0) { + SMC_outw(*((word*)buf)++, offset); + barrier(); *(volatile u32*)(0xc0000000); + } +} +#endif /* CONFIG_SMC_USE_IOFUNCS */ + static char unsigned smc_mac_addr[6] = {0x02, 0x80, 0xad, 0x20, 0x31, 0xb8}; /* |