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| author | sos <sos@FreeBSD.org> | 2001-01-29 18:00:35 +0000 |
|---|---|---|
| committer | sos <sos@FreeBSD.org> | 2001-01-29 18:00:35 +0000 |
| commit | ab7cbc336e725e50c14730d66dac04e3e4548555 (patch) | |
| tree | bc30c09c1cf0608889d4e7efe206af8acb0ee496 | |
| parent | 096ea4ce98489d10af98c495b2100f992797b641 (diff) | |
| download | FreeBSD-src-ab7cbc336e725e50c14730d66dac04e3e4548555.zip FreeBSD-src-ab7cbc336e725e50c14730d66dac04e3e4548555.tar.gz | |
Add option ATA_ENABLE_WC for enabling write caching (now off by default).
| -rw-r--r-- | sys/conf/options | 3 | ||||
| -rw-r--r-- | sys/dev/ata/ata-disk.c | 7 |
2 files changed, 8 insertions, 2 deletions
diff --git a/sys/conf/options b/sys/conf/options index 717a841..4670fe1 100644 --- a/sys/conf/options +++ b/sys/conf/options @@ -215,7 +215,8 @@ ATAPI_DEBUG opt_ata.h ATA_DEBUG opt_ata.h ATA_STATIC_ID opt_ata.h ATA_ENABLE_ATAPI_DMA opt_ata.h -ATA_ENABLE_TAGS opt_ata.h +ATA_ENABLE_WC opt_ata.h +ATA_ENABLE_TAGS opt_ata.h # also sets ATA_ENABLE_WC DEV_ATADISK opt_ata.h DEV_ATAPICD opt_ata.h DEV_ATAPIST opt_ata.h diff --git a/sys/dev/ata/ata-disk.c b/sys/dev/ata/ata-disk.c index 74a151b..444ec21 100644 --- a/sys/dev/ata/ata-disk.c +++ b/sys/dev/ata/ata-disk.c @@ -133,10 +133,15 @@ ad_attach(struct ata_softc *scp, int device) 0, 0, 0, 0, ATA_C_F_ENAB_RCACHE, ATA_WAIT_INTR)) printf("ad%d: enabling readahead cache failed\n", adp->lun); +#if defined(ATA_ENABLE_WC) || defined(ATA_ENABLE_TAGS) if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES, 0, 0, 0, 0, ATA_C_F_ENAB_WCACHE, ATA_WAIT_INTR)) printf("ad%d: enabling write cache failed\n", adp->lun); - +#else + if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES, + 0, 0, 0, 0, ATA_C_F_DIS_WCACHE, ATA_WAIT_INTR)) + printf("ad%d: disabling write cache failed\n", adp->lun); +#endif /* use DMA if drive & controller supports it */ ata_dmainit(adp->controller, adp->unit, ata_pmode(AD_PARAM), ata_wmode(AD_PARAM), ata_umode(AD_PARAM)); |
