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[SCSI] aic7xxx: fix the BIOS limits setting routines
Following the go around over the SONY DVD that needs artificial limits, this should be the correct code for all cases (minus the debugging prints). Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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d736a27b7e
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12021fff2b
1 changed files with 27 additions and 12 deletions
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@ -621,20 +621,35 @@ ahc_linux_target_alloc(struct scsi_target *starget)
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memset(targ, 0, sizeof(*targ));
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if (sc) {
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if ((ahc->features & AHC_ULTRA2) != 0) {
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scsirate = sc->device_flags[target_offset] & CFXFER;
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} else {
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scsirate = (sc->device_flags[target_offset] & CFXFER) << 4;
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if (sc->device_flags[target_offset] & CFSYNCH)
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scsirate |= SOFS;
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int maxsync = AHC_SYNCRATE_DT;
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int ultra = 0;
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int flags = sc->device_flags[target_offset];
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if (ahc->flags & AHC_NEWEEPROM_FMT) {
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if (flags & CFSYNCHISULTRA)
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ultra = 1;
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} else if (flags & CFULTRAEN)
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ultra = 1;
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/* AIC nutcase; 10MHz appears as ultra = 1, CFXFER = 0x04
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* change it to ultra=0, CFXFER = 0 */
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if(ultra && (flags & CFXFER) == 0x04) {
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ultra = 0;
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flags &= ~CFXFER;
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}
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if (sc->device_flags[target_offset] & CFWIDEB) {
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scsirate |= WIDEXFER;
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spi_max_width(starget) = 1;
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} else
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spi_max_width(starget) = 0;
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if ((ahc->features & AHC_ULTRA2) != 0) {
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scsirate = (flags & CFXFER) | (ultra ? 0x8 : 0);
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} else {
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scsirate = (flags & CFXFER) << 4;
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maxsync = ultra ? AHC_SYNCRATE_ULTRA :
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AHC_SYNCRATE_FAST;
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}
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spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0;
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if (!(flags & CFSYNCH))
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spi_max_offset(starget) = 0;
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spi_min_period(starget) =
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ahc_find_period(ahc, scsirate, AHC_SYNCRATE_DT);
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ahc_find_period(ahc, scsirate, maxsync);
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tinfo = ahc_fetch_transinfo(ahc, channel, ahc->our_id,
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starget->id, &tstate);
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}
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