From 519f1f7f0e1c94e5cf175a18379fc7855ffb6861 Mon Sep 17 00:00:00 2001 From: pk Date: Fri, 31 Jul 1998 15:53:11 +0000 Subject: [PATCH] Convert to bus dma. --- sys/arch/sparc/dev/isp_sbus.c | 106 ++++++++++++++++++++++------------ 1 file changed, 68 insertions(+), 38 deletions(-) diff --git a/sys/arch/sparc/dev/isp_sbus.c b/sys/arch/sparc/dev/isp_sbus.c index 97b1c8bd23e5..26ad098b08fc 100644 --- a/sys/arch/sparc/dev/isp_sbus.c +++ b/sys/arch/sparc/dev/isp_sbus.c @@ -1,5 +1,5 @@ -/* $NetBSD: isp_sbus.c,v 1.15 1998/07/31 02:10:12 thorpej Exp $ */ -/* $Id: isp_sbus.c,v 1.15 1998/07/31 02:10:12 thorpej Exp $ */ +/* $NetBSD: isp_sbus.c,v 1.16 1998/07/31 15:53:11 pk Exp $ */ +/* $Id: isp_sbus.c,v 1.16 1998/07/31 15:53:11 pk Exp $ */ /* * SBus specific probe and attach routines for Qlogic ISP SCSI adapters. * @@ -80,11 +80,12 @@ struct isp_sbussoftc { struct ispsoftc sbus_isp; sdparam sbus_dev; bus_space_tag_t sbus_bustag; + bus_dma_tag_t sbus_dmatag; volatile u_char *sbus_reg; int sbus_node; int sbus_pri; struct ispmdvec sbus_mdvec; - vm_offset_t sbus_kdma_allocs[MAXISPREQUEST]; + bus_dmamap_t sbus_dmamap[MAXISPREQUEST]; }; @@ -128,7 +129,7 @@ isp_sbus_attach(parent, self, aux) struct device *parent, *self; void *aux; { - int freq; + int i, freq; struct sbus_attach_args *sa = aux; struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; struct ispsoftc *isp = &sbc->sbus_isp; @@ -137,6 +138,7 @@ isp_sbus_attach(parent, self, aux) printf(" for %s\n", sa->sa_name); sbc->sbus_bustag = sa->sa_bustag; + sbc->sbus_dmatag = sa->sa_dmatag; sbc->sbus_pri = sa->sa_pri; sbc->sbus_mdvec = mdvec; @@ -196,6 +198,23 @@ isp_sbus_attach(parent, self, aux) return; } + for (i = 0; i < MAXISPREQUEST; i++) { + + /* Allocate a DMA handle */ + if (bus_dmamap_create( + sbc->sbus_dmatag, + MAXPHYS, /* size */ + 1, /* nsegments */ + MAXPHYS, /* maxsegsz */ + 0, /* boundary */ + BUS_DMA_NOWAIT, + &sbc->sbus_dmamap[i]) != 0) { + printf("%s: DMA map create error\n", + self->dv_xname); + return; + } + } + /* Establish interrupt channel */ bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, 0, @@ -265,7 +284,9 @@ static int isp_sbus_mbxdma(isp) struct ispsoftc *isp; { - size_t len; + struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; + bus_dma_segment_t seg; + size_t len, rseg; /* * NOTE: Since most Sun machines aren't I/O coherent, @@ -277,25 +298,29 @@ isp_sbus_mbxdma(isp) * Allocate and map the request queue. */ len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN); - isp->isp_rquest = (volatile caddr_t)malloc(len, M_DEVBUF, M_NOWAIT); - if (isp->isp_rquest == 0) + if (bus_dmamem_alloc(sbc->sbus_dmatag, len, NBPG, 0, + &seg, 1, &rseg, BUS_DMA_NOWAIT) != 0) return (1); - isp->isp_rquest_dma = (u_int32_t)kdvma_mapin((caddr_t)isp->isp_rquest, - len, 0); - if (isp->isp_rquest_dma == 0) + + if (bus_dmamem_map(sbc->sbus_dmatag, &seg, rseg, len, + (caddr_t *)&isp->isp_rquest, + BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0) return (1); + isp->isp_rquest_dma = seg.ds_addr; /* * Allocate and map the result queue. */ len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN); - isp->isp_result = (volatile caddr_t)malloc(len, M_DEVBUF, M_NOWAIT); - if (isp->isp_result == 0) + if (bus_dmamem_alloc(sbc->sbus_dmatag, len, NBPG, 0, + &seg, 1, &rseg, BUS_DMA_NOWAIT) != 0) return (1); - isp->isp_result_dma = (u_int32_t)kdvma_mapin((caddr_t)isp->isp_result, - len, 0); - if (isp->isp_result_dma == 0) + + if (bus_dmamem_map(sbc->sbus_dmatag, &seg, rseg, len, + (caddr_t *)&isp->isp_result, + BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0) return (1); + isp->isp_result_dma = seg.ds_addr; return (0); } @@ -313,7 +338,7 @@ isp_sbus_dmasetup(isp, xs, rq, iptrp, optr) u_int8_t optr; { struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; - vm_offset_t kdvma; + bus_dmamap_t dmamap; int dosleep = (xs->flags & SCSI_NOSLEEP) != 0; if (xs->datalen == 0) { @@ -326,29 +351,31 @@ isp_sbus_dmasetup(isp, xs, rq, iptrp, optr) isp->isp_name, rq->req_handle); /* NOTREACHED */ } - if (CPU_ISSUN4M) { - kdvma = (vm_offset_t) - kdvma_mapin((caddr_t)xs->data, xs->datalen, dosleep); - if (kdvma == (vm_offset_t) 0) { - XS_SETERR(xs, HBA_BOTCH); - return (1); - } - } else { - kdvma = (vm_offset_t) xs->data; - } - if (sbc->sbus_kdma_allocs[rq->req_handle - 1] != (vm_offset_t) 0) { - panic("%s: kdma handle already allocated\n", isp->isp_name); + dmamap = sbc->sbus_dmamap[rq->req_handle - 1]; + if (dmamap->dm_nsegs != 0) { + panic("%s: dma map already allocated\n", isp->isp_name); /* NOTREACHED */ } - sbc->sbus_kdma_allocs[rq->req_handle - 1] = kdvma; + if (bus_dmamap_load(sbc->sbus_dmatag, dmamap, + xs->data, xs->datalen, NULL, + dosleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) != 0) { + XS_SETERR(xs, HBA_BOTCH); + return (1); + } + bus_dmamap_sync(sbc->sbus_dmatag, dmamap, + dmamap->dm_segs[0].ds_addr, xs->datalen, + (xs->flags & SCSI_DATA_IN) + ? BUS_DMASYNC_PREREAD + : BUS_DMASYNC_PREWRITE); + if (xs->flags & SCSI_DATA_IN) { rq->req_flags |= REQFLAG_DATA_IN; } else { rq->req_flags |= REQFLAG_DATA_OUT; } rq->req_dataseg[0].ds_count = xs->datalen; - rq->req_dataseg[0].ds_base = (u_int32_t) kdvma; + rq->req_dataseg[0].ds_base = dmamap->dm_segs[0].ds_addr; rq->req_seg_count = 1; return (0); } @@ -360,7 +387,7 @@ isp_sbus_dmateardown(isp, xs, handle) u_int32_t handle; { struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; - vm_offset_t kdvma; + bus_dmamap_t dmamap; if (xs->flags & SCSI_DATA_IN) { cpuinfo.cache_flush(xs->data, xs->datalen - xs->resid); @@ -371,13 +398,16 @@ isp_sbus_dmateardown(isp, xs, handle) isp->isp_name, handle); /* NOTREACHED */ } - if (sbc->sbus_kdma_allocs[handle] == (vm_offset_t) 0) { - panic("%s: kdma handle not already allocated\n", isp->isp_name); + + dmamap = sbc->sbus_dmamap[handle]; + if (dmamap->dm_nsegs == 0) { + panic("%s: dma map not already allocated\n", isp->isp_name); /* NOTREACHED */ } - kdvma = sbc->sbus_kdma_allocs[handle]; - sbc->sbus_kdma_allocs[handle] = (vm_offset_t) 0; - if (CPU_ISSUN4M) { - dvma_mapout(kdvma, (vm_offset_t) xs->data, xs->datalen); - } + bus_dmamap_sync(sbc->sbus_dmatag, dmamap, + dmamap->dm_segs[0].ds_addr, xs->datalen, + (xs->flags & SCSI_DATA_IN) + ? BUS_DMASYNC_POSTREAD + : BUS_DMASYNC_POSTWRITE); + bus_dmamap_unload(sbc->sbus_dmatag, dmamap); }