diff options
Diffstat (limited to 'sys/dev/ic/wdc.c')
| -rw-r--r-- | sys/dev/ic/wdc.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/sys/dev/ic/wdc.c b/sys/dev/ic/wdc.c index 8ecb2fd1ee6..9b5df2b6e33 100644 --- a/sys/dev/ic/wdc.c +++ b/sys/dev/ic/wdc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: wdc.c,v 1.48 2002/03/16 17:12:09 csapuntz Exp $ */ +/* $OpenBSD: wdc.c,v 1.49 2002/05/03 09:18:46 gluk Exp $ */ /* $NetBSD: wdc.c,v 1.68 1999/06/23 19:00:17 bouyer Exp $ */ @@ -1797,6 +1797,43 @@ wdccommand(chp, drive, command, cylin, head, sector, count, precomp) } /* + * Send a 48-bit addressing command. The drive should be ready. + * Assumes interrupts are blocked. + */ +void +wdccommandext(chp, drive, command, blkno, count) + struct channel_softc *chp; + u_int8_t drive; + u_int8_t command; + u_int64_t blkno; + u_int16_t count; +{ + WDCDEBUG_PRINT(("wdccommandext %s:%d:%d: command=0x%x blkno=%llu " + "count=%d\n", chp->wdc->sc_dev.dv_xname, + chp->channel, drive, command, blkno, count), + DEBUG_FUNCS); + WDC_LOG_ATA_CMDEXT(chp, blkno >> 40, blkno >> 16, blkno >> 32, + blkno >> 8, blkno >> 24, blkno, count >> 8, count, command); + + /* Select drive and LBA mode. */ + CHP_WRITE_REG(chp, wdr_sdh, (drive << 4) | WDSD_LBA); + + /* Load parameters. All registers are two byte deep FIFOs. */ + CHP_WRITE_REG(chp, wdr_lba_hi, blkno >> 40); + CHP_WRITE_REG(chp, wdr_lba_hi, blkno >> 16); + CHP_WRITE_REG(chp, wdr_lba_mi, blkno >> 32); + CHP_WRITE_REG(chp, wdr_lba_mi, blkno >> 8); + CHP_WRITE_REG(chp, wdr_lba_lo, blkno >> 24); + CHP_WRITE_REG(chp, wdr_lba_lo, blkno); + CHP_WRITE_REG(chp, wdr_seccnt, count >> 8); + CHP_WRITE_REG(chp, wdr_seccnt, count); + + /* Send command. */ + CHP_WRITE_REG(chp, wdr_command, command); + return; +} + +/* * Simplified version of wdccommand(). Unbusy/ready/drq must be * tested by the caller. */ |