diff options
| author | wdenk <wdenk> | 2004-11-22 22:20:07 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2004-11-22 22:20:07 +0000 |
| commit | bb310d462bbe2be9be867f969e7a2b60ae90e785 (patch) | |
| tree | ccdaaad63f3a99bb8dd7abcefa0b7b2f195d8413 /drivers | |
| parent | 9d5028c2f7a65d3777867a6cfc966a01a5823132 (diff) | |
| download | u-boot-imx-bb310d462bbe2be9be867f969e7a2b60ae90e785.zip u-boot-imx-bb310d462bbe2be9be867f969e7a2b60ae90e785.tar.gz u-boot-imx-bb310d462bbe2be9be867f969e7a2b60ae90e785.tar.bz2 | |
Fix smc91111 ethernet driver for Xaeniax board (need to handle
unaligned tail part specially).
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/smc91111.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/smc91111.c b/drivers/smc91111.c index 69cbb17..060da8f 100644 --- a/drivers/smc91111.c +++ b/drivers/smc91111.c @@ -683,19 +683,39 @@ again: */ #ifdef USE_32_BIT SMC_outsl (SMC91111_DATA_REG, buf, length >> 2); +#ifndef CONFIG_XAENIAX if (length & 0x2) SMC_outw (*((word *) (buf + (length & 0xFFFFFFFC))), SMC91111_DATA_REG); #else + /* On XANEIAX, we can only use 32-bit writes, so we need to handle + * unaligned tail part specially. The standard code doesn't work. + */ + if ((length & 3) == 3) { + u16 * ptr = (u16*) &buf[length-3]; + SMC_outl((*ptr) | ((0x2000 | buf[length-1]) << 16), + SMC91111_DATA_REG); + } else if ((length & 2) == 2) { + u16 * ptr = (u16*) &buf[length-2]; + SMC_outl(*ptr, SMC91111_DATA_REG); + } else if (length & 1) { + SMC_outl((0x2000 | buf[length-1]), SMC91111_DATA_REG); + } else { + SMC_outl(0, SMC91111_DATA_REG); + } +#endif +#else SMC_outsw (SMC91111_DATA_REG, buf, (length) >> 1); #endif /* USE_32_BIT */ +#ifndef CONFIG_XAENIAX /* Send the last byte, if there is one. */ if ((length & 1) == 0) { SMC_outw (0, SMC91111_DATA_REG); } else { SMC_outw (buf[length - 1] | 0x2000, SMC91111_DATA_REG); } +#endif /* and let the chipset deal with it */ SMC_outw (MC_ENQUEUE, MMU_CMD_REG); |