diff options
| author | Alexander Yurchenko <grange@cvs.openbsd.org> | 2003-05-17 18:35:05 +0000 |
|---|---|---|
| committer | Alexander Yurchenko <grange@cvs.openbsd.org> | 2003-05-17 18:35:05 +0000 |
| commit | 4b8ab9aa0889d4c4353a47a23f73ef70cad7e558 (patch) | |
| tree | 77430951fc2327f0cb4420e741a3e2ec2bcaabd5 /sys/dev/pci | |
| parent | 21959db67a6aea697e8e2d58032624da63b8a695 (diff) | |
Allow chip-specific setup routines to change dma engine parameters
(size and align of dma segment) since some chips may have quirks;
from NetBSD.
ok millert@
Diffstat (limited to 'sys/dev/pci')
| -rw-r--r-- | sys/dev/pci/pciide.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sys/dev/pci/pciide.c b/sys/dev/pci/pciide.c index 56fb8628b4a..49f02f6e95f 100644 --- a/sys/dev/pci/pciide.c +++ b/sys/dev/pci/pciide.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pciide.c,v 1.124 2003/05/17 18:31:54 grange Exp $ */ +/* $OpenBSD: pciide.c,v 1.125 2003/05/17 18:35:04 grange Exp $ */ /* $NetBSD: pciide.c,v 1.127 2001/08/03 01:31:08 tsutsui Exp $ */ /* @@ -163,6 +163,13 @@ struct pciide_softc { bus_space_handle_t sc_dma_ioh; bus_dma_tag_t sc_dmat; + /* + * Some controllers might have DMA restrictions other than + * the norm. + */ + bus_size_t sc_dma_maxsegsz; + bus_size_t sc_dma_boundary; + /* For Cypress */ const struct cy82c693_handle *sc_cy_handle; int sc_cy_compatchan; @@ -724,6 +731,10 @@ pciide_attach(parent, self, aux) sc->sc_pc = pa->pa_pc; sc->sc_tag = pa->pa_tag; + /* Set up DMA defaults; these might be adjusted by chip_map. */ + sc->sc_dma_maxsegsz = IDEDMA_BYTE_COUNT_MAX; + sc->sc_dma_boundary = IDEDMA_BYTE_COUNT_ALIGN; + WDCDEBUG_PRINT((" sc_pc=%p, sc_tag=%p, pa_class=0x%x\n", sc->sc_pc, sc->sc_tag, pa->pa_class), DEBUG_PROBE); @@ -1120,7 +1131,7 @@ pciide_dma_table_setup(sc, channel, drive) dma_maps->dmamap_table->dm_segs[0].ds_addr), DEBUG_PROBE); /* Create a xfer DMA map for this drive */ if ((error = bus_dmamap_create(sc->sc_dmat, IDEDMA_BYTE_COUNT_MAX, - NIDEDMA_TABLES, IDEDMA_BYTE_COUNT_MAX, IDEDMA_BYTE_COUNT_ALIGN, + NIDEDMA_TABLES, sc->sc_dma_maxsegsz, sc->sc_dma_boundary, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &dma_maps->dmamap_xfer)) != 0) { printf("%s:%d: unable to create xfer DMA map for " |