Convert to bus dma.
This commit is contained in:
pk
parent
17de9df6c1
commit
519f1f7f0e
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@ -1,5 +1,5 @@
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/* $NetBSD: isp_sbus.c,v 1.15 1998/07/31 02:10:12 thorpej Exp $ */
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/* $Id: isp_sbus.c,v 1.15 1998/07/31 02:10:12 thorpej Exp $ */
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/* $NetBSD: isp_sbus.c,v 1.16 1998/07/31 15:53:11 pk Exp $ */
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/* $Id: isp_sbus.c,v 1.16 1998/07/31 15:53:11 pk Exp $ */
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/*
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* SBus specific probe and attach routines for Qlogic ISP SCSI adapters.
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*
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@ -80,11 +80,12 @@ struct isp_sbussoftc {
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struct ispsoftc sbus_isp;
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sdparam sbus_dev;
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bus_space_tag_t sbus_bustag;
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bus_dma_tag_t sbus_dmatag;
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volatile u_char *sbus_reg;
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int sbus_node;
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int sbus_pri;
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struct ispmdvec sbus_mdvec;
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vm_offset_t sbus_kdma_allocs[MAXISPREQUEST];
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bus_dmamap_t sbus_dmamap[MAXISPREQUEST];
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};
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@ -128,7 +129,7 @@ isp_sbus_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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int freq;
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int i, freq;
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struct sbus_attach_args *sa = aux;
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struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self;
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struct ispsoftc *isp = &sbc->sbus_isp;
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@ -137,6 +138,7 @@ isp_sbus_attach(parent, self, aux)
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printf(" for %s\n", sa->sa_name);
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sbc->sbus_bustag = sa->sa_bustag;
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sbc->sbus_dmatag = sa->sa_dmatag;
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sbc->sbus_pri = sa->sa_pri;
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sbc->sbus_mdvec = mdvec;
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@ -196,6 +198,23 @@ isp_sbus_attach(parent, self, aux)
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return;
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}
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for (i = 0; i < MAXISPREQUEST; i++) {
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/* Allocate a DMA handle */
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if (bus_dmamap_create(
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sbc->sbus_dmatag,
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MAXPHYS, /* size */
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1, /* nsegments */
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MAXPHYS, /* maxsegsz */
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0, /* boundary */
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BUS_DMA_NOWAIT,
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&sbc->sbus_dmamap[i]) != 0) {
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printf("%s: DMA map create error\n",
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self->dv_xname);
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return;
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}
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}
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/* Establish interrupt channel */
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bus_intr_establish(sbc->sbus_bustag,
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sbc->sbus_pri, 0,
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@ -265,7 +284,9 @@ static int
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isp_sbus_mbxdma(isp)
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struct ispsoftc *isp;
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{
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size_t len;
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struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
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bus_dma_segment_t seg;
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size_t len, rseg;
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/*
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* NOTE: Since most Sun machines aren't I/O coherent,
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@ -277,25 +298,29 @@ isp_sbus_mbxdma(isp)
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* Allocate and map the request queue.
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*/
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len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN);
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isp->isp_rquest = (volatile caddr_t)malloc(len, M_DEVBUF, M_NOWAIT);
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if (isp->isp_rquest == 0)
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if (bus_dmamem_alloc(sbc->sbus_dmatag, len, NBPG, 0,
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&seg, 1, &rseg, BUS_DMA_NOWAIT) != 0)
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return (1);
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isp->isp_rquest_dma = (u_int32_t)kdvma_mapin((caddr_t)isp->isp_rquest,
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len, 0);
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if (isp->isp_rquest_dma == 0)
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if (bus_dmamem_map(sbc->sbus_dmatag, &seg, rseg, len,
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(caddr_t *)&isp->isp_rquest,
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BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0)
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return (1);
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isp->isp_rquest_dma = seg.ds_addr;
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/*
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* Allocate and map the result queue.
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*/
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len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN);
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isp->isp_result = (volatile caddr_t)malloc(len, M_DEVBUF, M_NOWAIT);
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if (isp->isp_result == 0)
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if (bus_dmamem_alloc(sbc->sbus_dmatag, len, NBPG, 0,
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&seg, 1, &rseg, BUS_DMA_NOWAIT) != 0)
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return (1);
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isp->isp_result_dma = (u_int32_t)kdvma_mapin((caddr_t)isp->isp_result,
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len, 0);
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if (isp->isp_result_dma == 0)
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if (bus_dmamem_map(sbc->sbus_dmatag, &seg, rseg, len,
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(caddr_t *)&isp->isp_result,
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BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0)
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return (1);
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isp->isp_result_dma = seg.ds_addr;
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return (0);
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}
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@ -313,7 +338,7 @@ isp_sbus_dmasetup(isp, xs, rq, iptrp, optr)
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u_int8_t optr;
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{
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struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
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vm_offset_t kdvma;
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bus_dmamap_t dmamap;
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int dosleep = (xs->flags & SCSI_NOSLEEP) != 0;
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if (xs->datalen == 0) {
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@ -326,29 +351,31 @@ isp_sbus_dmasetup(isp, xs, rq, iptrp, optr)
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isp->isp_name, rq->req_handle);
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/* NOTREACHED */
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}
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if (CPU_ISSUN4M) {
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kdvma = (vm_offset_t)
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kdvma_mapin((caddr_t)xs->data, xs->datalen, dosleep);
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if (kdvma == (vm_offset_t) 0) {
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XS_SETERR(xs, HBA_BOTCH);
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return (1);
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}
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} else {
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kdvma = (vm_offset_t) xs->data;
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}
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if (sbc->sbus_kdma_allocs[rq->req_handle - 1] != (vm_offset_t) 0) {
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panic("%s: kdma handle already allocated\n", isp->isp_name);
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dmamap = sbc->sbus_dmamap[rq->req_handle - 1];
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if (dmamap->dm_nsegs != 0) {
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panic("%s: dma map already allocated\n", isp->isp_name);
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/* NOTREACHED */
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}
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sbc->sbus_kdma_allocs[rq->req_handle - 1] = kdvma;
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if (bus_dmamap_load(sbc->sbus_dmatag, dmamap,
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xs->data, xs->datalen, NULL,
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dosleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) != 0) {
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XS_SETERR(xs, HBA_BOTCH);
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return (1);
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}
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bus_dmamap_sync(sbc->sbus_dmatag, dmamap,
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dmamap->dm_segs[0].ds_addr, xs->datalen,
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(xs->flags & SCSI_DATA_IN)
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? BUS_DMASYNC_PREREAD
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: BUS_DMASYNC_PREWRITE);
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if (xs->flags & SCSI_DATA_IN) {
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rq->req_flags |= REQFLAG_DATA_IN;
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} else {
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rq->req_flags |= REQFLAG_DATA_OUT;
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}
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rq->req_dataseg[0].ds_count = xs->datalen;
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rq->req_dataseg[0].ds_base = (u_int32_t) kdvma;
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rq->req_dataseg[0].ds_base = dmamap->dm_segs[0].ds_addr;
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rq->req_seg_count = 1;
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return (0);
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}
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@ -360,7 +387,7 @@ isp_sbus_dmateardown(isp, xs, handle)
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u_int32_t handle;
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{
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struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
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vm_offset_t kdvma;
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bus_dmamap_t dmamap;
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if (xs->flags & SCSI_DATA_IN) {
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cpuinfo.cache_flush(xs->data, xs->datalen - xs->resid);
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@ -371,13 +398,16 @@ isp_sbus_dmateardown(isp, xs, handle)
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isp->isp_name, handle);
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/* NOTREACHED */
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}
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if (sbc->sbus_kdma_allocs[handle] == (vm_offset_t) 0) {
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panic("%s: kdma handle not already allocated\n", isp->isp_name);
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dmamap = sbc->sbus_dmamap[handle];
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if (dmamap->dm_nsegs == 0) {
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panic("%s: dma map not already allocated\n", isp->isp_name);
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/* NOTREACHED */
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}
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kdvma = sbc->sbus_kdma_allocs[handle];
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sbc->sbus_kdma_allocs[handle] = (vm_offset_t) 0;
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if (CPU_ISSUN4M) {
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dvma_mapout(kdvma, (vm_offset_t) xs->data, xs->datalen);
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}
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bus_dmamap_sync(sbc->sbus_dmatag, dmamap,
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dmamap->dm_segs[0].ds_addr, xs->datalen,
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(xs->flags & SCSI_DATA_IN)
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? BUS_DMASYNC_POSTREAD
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: BUS_DMASYNC_POSTWRITE);
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bus_dmamap_unload(sbc->sbus_dmatag, dmamap);
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}
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