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Code Issues Releases Activity

Add support for setting the SG list segment size.

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Use this for the SiI3112 workaround to get rid of the "oversized DMA" errors.

MFC to 6.0 candidate.
This commit is contained in:
Søren Schmidt 2005-10-06 15:44:07 +00:00
parent a2d3802cd8
commit 40fdf81237
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=151002
3 changed files with 19 additions and 11 deletions
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9
sys/dev/ata/ata-all.h
View File

@ -448,10 +448,11 @@ struct ata_dma {
u_int8_t *work; /* workspace */
bus_addr_t work_bus; /* bus address of dmatab */
u_int32_t alignment; /* DMA engine alignment */
u_int32_t boundary; /* DMA engine boundary */
u_int32_t max_iosize; /* DMA engine max IO size */
u_int32_t cur_iosize; /* DMA engine current IO size */
u_int32_t alignment; /* DMA SG list alignment */
u_int32_t boundary; /* DMA SG list boundary */
u_int32_t segsize; /* DMA SG list segment size */
u_int32_t max_iosize; /* DMA data max IO size */
u_int32_t cur_iosize; /* DMA data current IO size */
int flags;
#define ATA_DMA_READ 0x01 /* transaction is a read */
#define ATA_DMA_LOADED 0x02 /* DMA tables etc loaded */

10
sys/dev/ata/ata-chipset.c
View File

@ -66,7 +66,6 @@ static int ata_ahci_begin_transaction(struct ata_request *request);
static int ata_ahci_end_transaction(struct ata_request *request);
static void ata_ahci_intr(void *data);
static void ata_ahci_reset(device_t dev);
static void ata_ahci_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error);
static void ata_ahci_dmainit(device_t dev);
static int ata_acard_chipinit(device_t dev);
static void ata_acard_intr(void *data);
@ -3426,7 +3425,7 @@ ata_sii_allocate(device_t dev)
if ((ctlr->chip->cfg2 & SIIBUG) && ch->dma) {
/* work around errata in early chips */
ch->dma->boundary = 16 * DEV_BSIZE;
ch->dma->max_iosize = 15 * DEV_BSIZE;
ch->dma->segsize = 15 * DEV_BSIZE;
}
ata_generic_hw(dev);
@ -3553,6 +3552,13 @@ ata_sii_reset(device_t dev)
/* disable PHY state change interrupt */
ATA_OUTL(ctlr->r_res2, 0x148 + offset, ~(1 << 16));
/* reset controller part for this channel */
ATA_OUTL(ctlr->r_res2, 0x48,
ATA_INL(ctlr->r_res2, 0x48) | (0xc0 >> ch->unit));
DELAY(1000);
ATA_OUTL(ctlr->r_res2, 0x48,
ATA_INL(ctlr->r_res2, 0x48) & ~(0xc0 >> ch->unit));
ata_sata_phy_enable(ch);
/* enable PHY state change interrupt */

11
sys/dev/ata/ata-dma.c
View File

@ -77,8 +77,9 @@ ata_dmainit(device_t dev)
ch->dma->load = ata_dmaload;
ch->dma->unload = ata_dmaunload;
ch->dma->alignment = 2;
ch->dma->max_iosize = 128 * DEV_BSIZE;
ch->dma->boundary = 128 * DEV_BSIZE;
ch->dma->segsize = 128 * DEV_BSIZE;
ch->dma->max_iosize = 128 * DEV_BSIZE;
}
}
@ -99,8 +100,8 @@ ata_dmaalloc(device_t dev)
if (bus_dma_tag_create(NULL, ch->dma->alignment, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
NULL, NULL, 256 * DEV_BSIZE,
ATA_DMA_ENTRIES, ch->dma->max_iosize,
NULL, NULL, ch->dma->max_iosize,
ATA_DMA_ENTRIES, ch->dma->segsize,
0, NULL, NULL, &ch->dma->dmatag))
goto error;
@ -112,8 +113,8 @@ ata_dmaalloc(device_t dev)
if (bus_dma_tag_create(ch->dma->dmatag,ch->dma->alignment,ch->dma->boundary,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
NULL, NULL, 256 * DEV_BSIZE,
ATA_DMA_ENTRIES, ch->dma->max_iosize,
NULL, NULL, ch->dma->max_iosize,
ATA_DMA_ENTRIES, ch->dma->segsize,
BUS_DMA_ALLOCNOW, NULL, NULL, &ch->dma->data_tag))
goto error;