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Be a bit more restrictive in using multisector transfers.

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sos 2000-08-06 18:01:47 +00:00
parent a76d7b0016
commit 1cf2e0d376
1 changed files with 6 additions and 4 deletions
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10
sys/dev/ata/ata-disk.c
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@ -117,11 +117,13 @@ ad_attach(struct ata_softc *scp, int32_t device)
/* use multiple sectors/interrupt if device supports it */
adp->transfersize = DEV_BSIZE;
secsperint = max(1, min(AD_PARAM->nsecperint, 16));
if (!ata_command(adp->controller, adp->unit, ATA_C_SET_MULTI,
0, 0, 0, secsperint, 0, ATA_WAIT_INTR) &&
ata_wait(adp->controller, adp->unit, ATA_S_READY) >= 0)
if (ad_version(AD_PARAM->versmajor)) {
secsperint = max(1, min(AD_PARAM->nsecperint, 16));
if (!ata_command(adp->controller, adp->unit, ATA_C_SET_MULTI,
0, 0, 0, secsperint, 0, ATA_WAIT_INTR) &&
ata_wait(adp->controller, adp->unit, ATA_S_READY) >= 0)
adp->transfersize *= secsperint;
}
/* enable read/write cacheing if not default on device */
if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES,