diff options
Diffstat (limited to 'sys/arch/pica/dev/dma.c')
| -rw-r--r-- | sys/arch/pica/dev/dma.c | 69 |
1 files changed, 60 insertions, 9 deletions
diff --git a/sys/arch/pica/dev/dma.c b/sys/arch/pica/dev/dma.c index 18b00cd7644..34c313d3d71 100644 --- a/sys/arch/pica/dev/dma.c +++ b/sys/arch/pica/dev/dma.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * from: @(#)rz.c 8.1 (Berkeley) 7/29/93 - * $Id: dma.c,v 1.1 1995/10/18 10:39:09 deraadt Exp $ + * $Id: dma.c,v 1.2 1995/10/28 15:47:06 deraadt Exp $ */ /* @@ -211,9 +211,8 @@ picaDmaTLBMap(dma_softc_t *sc) } /* - * Start dma channel. + * Start local dma channel. */ - void picaDmaStart(sc, addr, size, datain) struct dma_softc *sc; @@ -255,6 +254,27 @@ picaDmaStart(sc, addr, size, datain) } /* + * Set up DMA mapper for external dma. + * Used by ISA dma and SONIC + */ +void +picaDmaMap(sc, addr, size, offset) + struct dma_softc *sc; + char *addr; + size_t size; + int offset; +{ + /* Remap request space va into dma space va */ + + sc->req_va = (int)addr; + sc->next_va = sc->dma_va + dma_page_offs(addr) + offset; + sc->next_size = size; + + /* Map up the request viritual dma space */ + picaDmaTLBMap(sc); +} + +/* * Stop/Reset a DMA channel */ void @@ -269,6 +289,17 @@ picaDmaReset(dma_softc_t *sc) } /* + * Null call rathole! + */ +void +picaDmaNull(dma_softc_t *sc) +{ + pDmaReg regs = sc->dma_reg; + + printf("picaDmaNull called\n"); +} + +/* * dma_init.. * Called from asc to set up dma */ @@ -276,10 +307,11 @@ void asc_dma_init(dma_softc_t *sc) { sc->reset = picaDmaReset; - sc->enintr = NULL; + sc->enintr = picaDmaNull; sc->start = picaDmaStart; - sc->isintr = NULL; - sc->intr = NULL; + sc->map = picaDmaMap; + sc->isintr = picaDmaNull; + sc->intr = picaDmaNull; sc->dma_reg = (pDmaReg)PICA_SYS_DMA0_REGS; sc->pte_size = 32; @@ -294,13 +326,32 @@ void fdc_dma_init(dma_softc_t *sc) { sc->reset = picaDmaReset; - sc->enintr = NULL; + sc->enintr = picaDmaNull; sc->start = picaDmaStart; - sc->isintr = NULL; - sc->intr = NULL; + sc->isintr = picaDmaNull; + sc->intr = picaDmaNull; sc->dma_reg = (pDmaReg)PICA_SYS_DMA1_REGS; sc->pte_size = 32; sc->mode = PICA_DMA_MODE_160NS | PICA_DMA_MODE_8; picaDmaTLBAlloc(sc); } +/* + * dma_init.. + * Called from sonic to set up dma + */ +void +sn_dma_init(dma_softc_t *sc, int pages) +{ + sc->reset = picaDmaNull; + sc->enintr = picaDmaNull; + sc->map = picaDmaMap; + sc->start = picaDmaNull; + sc->isintr = picaDmaNull; + sc->intr = picaDmaNull; + + sc->dma_reg = (pDmaReg)NULL; + sc->pte_size = pages; + sc->mode = 0; + picaDmaTLBAlloc(sc); +} |