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Code Issues Releases Activity

Add UDMA66 support to the Intel ICH chip.

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Submitted by: sakichan@lares.dti.ne.jp
This commit is contained in:
Søren Schmidt 2000-02-22 20:37:01 +00:00
parent 21d31a14fb
commit 9bd1c89ad3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=57391
1 changed files with 27 additions and 1 deletions
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28
sys/dev/ata/ata-dma.c
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@ -96,9 +96,35 @@ ata_dmainit(struct ata_softc *scp, int32_t device,
switch (scp->chiptype) {
case 0x24118086: /* Intel ICH */
if (udmamode >= 4) {
int32_t mask48, new48;
int16_t word54;
word54 = pci_read_config(parent, 0x54, 2);
if (word54 & (0x10 << devno)) {
error = ata_command(scp, device, ATA_C_SETFEATURES, 0, 0, 0,
ATA_UDMA4, ATA_C_F_SETXFER,ATA_WAIT_READY);
if (bootverbose)
ata_printf(scp, device,
"%s setting up UDMA4 mode on ICH chip\n",
(error) ? "failed" : "success");
if (!error) {
mask48 = (1 << devno) + (3 << (16 + (devno << 2)));
new48 = (1 << devno) + (2 << (16 + (devno << 2)));
pci_write_config(parent, 0x48,
(pci_read_config(parent, 0x48, 4) &
~mask48) | new48, 4);
pci_write_config(parent, 0x54, word54 | (1 << devno), 2);
scp->mode[ATA_DEV(device)] = ATA_UDMA4;
return;
}
}
}
/* FALLTHROUGH */
case 0x71118086: /* Intel PIIX4 */
case 0x71998086: /* Intel PIIX4e */
case 0x24118086: /* Intel ICH */
case 0x24218086: /* Intel ICH0 */
if (udmamode >= 2) {
int32_t mask48, new48;