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Reduce the amount of memory reported to busdma.

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This made the requirements for bouncebuffers too big with PAE.
Cleanup the way size defines for transfers are implemented.
This commit is contained in:
Søren Schmidt 2004-09-10 10:31:37 +00:00
parent ca219d048a
commit 1d535cd590
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=135034
2 changed files with 10 additions and 8 deletions
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10
sys/dev/ata/ata-chipset.c
View file

@ -546,7 +546,7 @@ ata_cyrix_setmode(struct ata_device *atadev, int mode)
int error;
atadev->channel->dma->alignment = 16;
atadev->channel->dma->max_iosize = 63 * 1024;
atadev->channel->dma->max_iosize = 126 * DEV_BSIZE;
mode = ata_limit_mode(atadev, mode, ATA_UDMA2);
@ -1067,7 +1067,7 @@ ata_national_setmode(struct ata_device *atadev, int mode)
int error;
atadev->channel->dma->alignment = 16;
atadev->channel->dma->max_iosize = 63 * 1024;
atadev->channel->dma->max_iosize = 126 * DEV_BSIZE;
mode = ata_limit_mode(atadev, mode, ATA_UDMA2);
@ -2157,8 +2157,10 @@ ata_sii_allocate(device_t dev, struct ata_channel *ch)
if (ctlr->chip->max_dma >= ATA_SA150)
ch->flags |= ATA_NO_SLAVE;
if ((ctlr->chip->cfg2 & SIIBUG) && ch->dma)
ch->dma->boundary = 8 * 1024;
if ((ctlr->chip->cfg2 & SIIBUG) && ch->dma) {
ch->dma->boundary = 16 * DEV_BSIZE;
ch->dma->max_iosize = 15 * DEV_BSIZE;
}
ata_generic_hw(ch);

8
sys/dev/ata/ata-dma.c
View file

@ -75,8 +75,8 @@ ata_dmainit(struct ata_channel *ch)
ch->dma->load = ata_dmaload;
ch->dma->unload = ata_dmaunload;
ch->dma->alignment = 2;
ch->dma->max_iosize = 64 * 1024;
ch->dma->boundary = 64 * 1024;
ch->dma->max_iosize = 128 * DEV_BSIZE;
ch->dma->boundary = 128 * DEV_BSIZE;
}
}
@ -96,7 +96,7 @@ ata_dmaalloc(struct ata_channel *ch)
if (bus_dma_tag_create(NULL, ch->dma->alignment, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
NULL, NULL, 16*1024*1024,
NULL, NULL, 256 * DEV_BSIZE,
ATA_DMA_ENTRIES, ch->dma->max_iosize,
BUS_DMA_ALLOCNOW, NULL, NULL, &ch->dma->dmatag))
goto error;
@ -109,7 +109,7 @@ ata_dmaalloc(struct ata_channel *ch)
if (bus_dma_tag_create(ch->dma->dmatag,ch->dma->alignment,ch->dma->boundary,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
NULL, NULL, 16*1024*1024,
NULL, NULL, 256 * DEV_BSIZE,
ATA_DMA_ENTRIES, ch->dma->max_iosize,
BUS_DMA_ALLOCNOW, NULL, NULL, &ch->dma->ddmatag))
goto error;