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Try to workaound silicon bugs in Promise gen2 (ie TX4) chips

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Initial patch by Alexander Sabourenkov who found it in Promise's own driver.

Further fixes and sanity checks by yours truely.
This commit is contained in:
sos 2007-11-19 20:47:31 +00:00
parent 24ced90f97
commit d1d1db8b70
2 changed files with 46 additions and 1 deletions
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46
sys/dev/ata/ata-chipset.c
View File

@ -142,6 +142,7 @@ static int ata_promise_mio_status(device_t dev);
static int ata_promise_mio_command(struct ata_request *request);
static void ata_promise_mio_reset(device_t dev);
static void ata_promise_mio_dmainit(device_t dev);
static void ata_promise_mio_setprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error);
static void ata_promise_mio_setmode(device_t dev, int mode);
static void ata_promise_sx4_intr(void *data);
static int ata_promise_sx4_command(struct ata_request *request);
@ -859,6 +860,7 @@ ata_ahci_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
prd[i].dbc = htole32((segs[i].ds_len - 1) & ATA_AHCI_PRD_MASK);
}
}
KASSERT(nsegs <= ATA_DMA_ENTRIES, "too many DMA segment entries\n");
args->nsegs = nsegs;
}
@ -2783,6 +2785,8 @@ ata_marvell_edma_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs,
prd[i].addrhi = htole32((u_int64_t)segs[i].ds_addr >> 32);
}
prd[i - 1].count |= htole32(ATA_DMA_EOT);
KASSERT(nsegs <= ATA_DMA_ENTRIES, "too many DMA segment entries\n");
args->nsegs = nsegs;
}
static void
@ -3310,9 +3314,13 @@ ata_promise_chipinit(device_t dev)
/* prime fake interrupt register */
ATA_OUTL(ctlr->r_res2, fake_reg, 0xffffffff);
/* clear SATA status */
/* clear SATA status and unmask interrupts */
ATA_OUTL(ctlr->r_res2, stat_reg, 0x000000ff);
/* enable "long burst lenght" on gen2 chips */
if ((ctlr->chip->cfg2 == PRSATA2) || (ctlr->chip->cfg2 == PRCMBO2))
ATA_OUTL(ctlr->r_res2, 0x44, ATA_INL(ctlr->r_res2, 0x44) | 0x2000);
ctlr->allocate = ata_promise_mio_allocate;
ctlr->reset = ata_promise_mio_reset;
ctlr->dmainit = ata_promise_mio_dmainit;
@ -3800,8 +3808,42 @@ ata_promise_mio_reset(device_t dev)
static void
ata_promise_mio_dmainit(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
/* note start and stop are not used here */
ata_dmainit(dev);
if (ch->dma)
ch->dma->setprd = ata_promise_mio_setprd;
}
#define MAXLASTSGSIZE (32 * sizeof(u_int32_t))
static void
ata_promise_mio_setprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
{
struct ata_dmasetprd_args *args = xsc;
struct ata_dma_prdentry *prd = args->dmatab;
int i;
if ((args->error = error))
return;
for (i = 0; i < nsegs; i++) {
prd[i].addr = htole32(segs[i].ds_addr);
prd[i].count = htole32(segs[i].ds_len);
}
if (segs[i - 1].ds_len > MAXLASTSGSIZE) {
//printf("split last SG element of %u\n", segs[i - 1].ds_len);
prd[i - 1].count = htole32(segs[i - 1].ds_len - MAXLASTSGSIZE);
prd[i].count = htole32(MAXLASTSGSIZE);
prd[i].addr = htole32(segs[i - 1].ds_addr +
(segs[i - 1].ds_len - MAXLASTSGSIZE));
nsegs++;
i++;
}
prd[i - 1].count |= htole32(ATA_DMA_EOT);
KASSERT(nsegs <= ATA_DMA_ENTRIES, "too many DMA segment entries\n");
args->nsegs = nsegs;
}
static void
@ -4862,6 +4904,8 @@ ata_siiprb_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
prd[i].count = htole32(segs[i].ds_len);
}
prd[i - 1].control = htole32(ATA_DMA_EOT);
KASSERT(nsegs <= ATA_DMA_ENTRIES, "too many DMA segment entries\n");
args->nsegs = nsegs;
}
static void

1
sys/dev/ata/ata-dma.c
View File

@ -213,6 +213,7 @@ ata_dmasetprd(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
prd[i].count = htole32(segs[i].ds_len);
}
prd[i - 1].count |= htole32(ATA_DMA_EOT);
KASSERT(nsegs <= ATA_DMA_ENTRIES, "too many DMA segment entries\n");
args->nsegs = nsegs;
}