diff options
| -rw-r--r-- | sys/dev/sbus/files.sbus | 5 | ||||
| -rw-r--r-- | sys/dev/sbus/isp_sbus.c | 597 |
2 files changed, 601 insertions, 1 deletions
diff --git a/sys/dev/sbus/files.sbus b/sys/dev/sbus/files.sbus index 235071d330f..71839ace6a4 100644 --- a/sys/dev/sbus/files.sbus +++ b/sys/dev/sbus/files.sbus @@ -1,4 +1,4 @@ -# $OpenBSD: files.sbus,v 1.6 2001/09/30 00:45:17 jason Exp $ +# $OpenBSD: files.sbus,v 1.7 2001/10/06 02:03:24 jason Exp $ # $NetBSD: files.sbus,v 1.16 2000/12/08 17:29:12 martin Exp $ # # Config file and device description for machine-independent SBUS code. @@ -48,3 +48,6 @@ file dev/sbus/if_hme_sbus.c hme_sbus device audiocs: audio, auconv attach audiocs at sbus file dev/sbus/cs4231.c audiocs + +attach isp at sbus with isp_sbus +file dev/sbus/isp_sbus.c isp_sbus diff --git a/sys/dev/sbus/isp_sbus.c b/sys/dev/sbus/isp_sbus.c new file mode 100644 index 00000000000..ae987f268e8 --- /dev/null +++ b/sys/dev/sbus/isp_sbus.c @@ -0,0 +1,597 @@ +/* $OpenBSD: isp_sbus.c,v 1.1 2001/10/06 02:03:24 jason Exp $ */ +/* $NetBSD: isp_sbus.c,v 1.46 2001/09/26 20:53:14 eeh Exp $ */ + +/* + * This driver, which is contained in NetBSD in the files: + * + * sys/dev/ic/isp.c + * sys/dev/ic/isp_inline.h + * sys/dev/ic/isp_netbsd.c + * sys/dev/ic/isp_netbsd.h + * sys/dev/ic/isp_target.c + * sys/dev/ic/isp_target.h + * sys/dev/ic/isp_tpublic.h + * sys/dev/ic/ispmbox.h + * sys/dev/ic/ispreg.h + * sys/dev/ic/ispvar.h + * sys/microcode/isp/asm_sbus.h + * sys/microcode/isp/asm_1040.h + * sys/microcode/isp/asm_1080.h + * sys/microcode/isp/asm_12160.h + * sys/microcode/isp/asm_2100.h + * sys/microcode/isp/asm_2200.h + * sys/pci/isp_pci.c + * sys/sbus/isp_sbus.c + * + * Is being actively maintained by Matthew Jacob (mjacob@netbsd.org). + * This driver also is shared source with FreeBSD, OpenBSD, Linux, Solaris, + * Linux versions. This tends to be an interesting maintenance problem. + * + * Please coordinate with Matthew Jacob on changes you wish to make here. + */ +/* + * SBus specific probe and attach routines for Qlogic ISP SCSI adapters. + * + * Copyright (c) 1997, 2001 by Matthew Jacob + * NASA AMES Research Center + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice immediately at the beginning of the file, without modification, + * this list of conditions, and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/device.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/queue.h> + +#include <machine/bus.h> +#include <machine/intr.h> +#include <machine/autoconf.h> + +#include <dev/ic/isp_openbsd.h> +#if defined(ISP_COMPILE_FW) || defined(ISP_COMPILE_1000_FW) +#include <dev/microcode/isp/asm_sbus.h> +#endif +#include <dev/sbus/sbusvar.h> +#include <sys/reboot.h> + +static int isp_sbus_intr(void *); +static int +isp_sbus_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *); +static u_int16_t isp_sbus_rd_reg(struct ispsoftc *, int); +static void isp_sbus_wr_reg (struct ispsoftc *, int, u_int16_t); +static int isp_sbus_mbxdma(struct ispsoftc *); +static int isp_sbus_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *, u_int16_t *, + u_int16_t); +static void isp_sbus_dmateardown(struct ispsoftc *, XS_T *, u_int16_t); + +#ifndef ISP_1000_RISC_CODE +#define ISP_1000_RISC_CODE NULL +#endif + +static struct ispmdvec mdvec = { + isp_sbus_rd_isr, + isp_sbus_rd_reg, + isp_sbus_wr_reg, + isp_sbus_mbxdma, + isp_sbus_dmasetup, + isp_sbus_dmateardown, + NULL, + NULL, + NULL, + ISP_1000_RISC_CODE +}; + +struct isp_sbussoftc { + struct ispsoftc sbus_isp; + struct sbusdev sbus_sd; + sdparam sbus_dev; + bus_space_tag_t sbus_bustag; + bus_dma_tag_t sbus_dmatag; + bus_space_handle_t sbus_reg; + int sbus_node; + int sbus_pri; + struct ispmdvec sbus_mdvec; + bus_dmamap_t *sbus_dmamap; + bus_dmamap_t sbus_rquest_dmamap; + bus_dmamap_t sbus_result_dmamap; + int16_t sbus_poff[_NREG_BLKS]; +}; + + +static int isp_match(struct device *, void *, void *); +static void isp_sbus_attach(struct device *, struct device *, void *); +struct cfattach isp_sbus_ca = { + sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach +}; + +static int +isp_match(struct device *parent, void *vcf, void *aux) +{ + struct cfdata *cf = vcf; + int rv; +#ifdef DEBUG + static int oneshot = 1; +#endif + struct sbus_attach_args *sa = aux; + + rv = (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || + strcmp("PTI,ptisp", sa->sa_name) == 0 || + strcmp("ptisp", sa->sa_name) == 0 || + strcmp("SUNW,isp", sa->sa_name) == 0 || + strcmp("QLGC,isp", sa->sa_name) == 0); +#ifdef DEBUG + if (rv && oneshot) { + oneshot = 0; + printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version " + "%d.%d Core Version %d.%d\n", + ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, + ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); + } +#endif + return (rv); +} + + +static void +isp_sbus_attach(struct device *parent, struct device *self, void *aux) +{ + int freq, ispburst, sbusburst; + struct sbus_attach_args *sa = aux; + struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; + struct ispsoftc *isp = &sbc->sbus_isp; + + printf(" for %s\n", sa->sa_name); + + sbc->sbus_bustag = sa->sa_bustag; + sbc->sbus_dmatag = sa->sa_dmatag; + if (sa->sa_nintr != 0) + sbc->sbus_pri = sa->sa_pri; + sbc->sbus_mdvec = mdvec; + + if (sa->sa_npromvaddrs != 0) { + sbc->sbus_reg = (bus_space_handle_t)sa->sa_promvaddrs[0]; + } else { + if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, + sa->sa_size, BUS_SPACE_MAP_LINEAR, 0, + &sbc->sbus_reg) != 0) { + printf("%s: cannot map registers\n", self->dv_xname); + return; + } + } + sbc->sbus_node = sa->sa_node; + + freq = getpropint(sa->sa_node, "clock-frequency", 0); + if (freq) { + /* + * Convert from HZ to MHz, rounding up. + */ + freq = (freq + 500000)/1000000; +#if 0 + printf("%s: %d MHz\n", self->dv_xname, freq); +#endif + } + sbc->sbus_mdvec.dv_clock = freq; + + /* + * Now figure out what the proper burst sizes, etc., to use. + * Unfortunately, there is no ddi_dma_burstsizes here which + * walks up the tree finding the limiting burst size node (if + * any). + */ + sbusburst = ((struct sbus_softc *)parent)->sc_burst; + if (sbusburst == 0) + sbusburst = SBUS_BURST_32 - 1; + ispburst = getpropint(sa->sa_node, "burst-sizes", -1); + if (ispburst == -1) { + ispburst = sbusburst; + } + ispburst &= sbusburst; + ispburst &= ~(1 << 7); + ispburst &= ~(1 << 6); + sbc->sbus_mdvec.dv_conf1 = 0; + if (ispburst & (1 << 5)) { + sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; + } else if (ispburst & (1 << 4)) { + sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; + } else if (ispburst & (1 << 3)) { + sbc->sbus_mdvec.dv_conf1 = + BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; + } + if (sbc->sbus_mdvec.dv_conf1) { + sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; + } + + /* + * Some early versions of the PTI SBus adapter + * would fail in trying to download (via poking) + * FW. We give up on them. + */ + if (strcmp("PTI,ptisp", sa->sa_name) == 0 || + strcmp("ptisp", sa->sa_name) == 0) { + sbc->sbus_mdvec.dv_ispfw = NULL; + } + + isp->isp_mdvec = &sbc->sbus_mdvec; + isp->isp_bustype = ISP_BT_SBUS; + isp->isp_type = ISP_HA_SCSI_UNKNOWN; + isp->isp_param = &sbc->sbus_dev; + bzero(isp->isp_param, sizeof (sdparam)); + + sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; + sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; + sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; + sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; + sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; + + /* Establish interrupt channel */ + bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 0, + isp_sbus_intr, sbc); + sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo._dev); + + /* + * Set up logging levels. + */ +#ifdef ISP_LOGDEFAULT + isp->isp_dblev = ISP_LOGDEFAULT; +#else + isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; +#ifdef SCSIDEBUG + isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; +#endif +#ifdef DEBUG + isp->isp_dblev |= ISP_LOGDEBUG0|ISP_LOGCONFIG|ISP_LOGINFO; +#endif +#endif + + isp->isp_confopts = self->dv_cfdata->cf_flags; + isp->isp_role = ISP_DEFAULT_ROLES; + + /* + * There's no tool on sparc to set NVRAM for ISPs, so ignore it. + */ + isp->isp_confopts |= ISP_CFG_NONVRAM; + ISP_LOCK(isp); + isp->isp_osinfo.no_mbox_ints = 1; + isp_reset(isp); + if (isp->isp_state != ISP_RESETSTATE) { + ISP_UNLOCK(isp); + return; + } + ENABLE_INTS(isp); + isp_init(isp); + if (isp->isp_state != ISP_INITSTATE) { + isp_uninit(isp); + ISP_UNLOCK(isp); + return; + } + + /* + * do generic attach. + */ + ISP_UNLOCK(isp); + isp_attach(isp); + if (isp->isp_state != ISP_RUNSTATE) { + ISP_LOCK(isp); + isp_uninit(isp); + ISP_UNLOCK(isp); + } +} + +static int +isp_sbus_intr(void *arg) +{ + u_int16_t isr, sema, mbox; + struct ispsoftc *isp = arg; + struct isp_sbussoftc *sbc = arg; + + bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_result_dmamap, 0, + sbc->sbus_result_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); + if (ISP_READ_ISR(isp, &isr, &sema, &mbox)) { + sbc->sbus_isp.isp_osinfo.onintstack = 1; + isp_intr(isp, isr, sema, mbox); + sbc->sbus_isp.isp_osinfo.onintstack = 0; + return (1); + } else { + return (0); + } +} + +#define IspVirt2Off(a, x) \ + (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ + _BLK_REG_SHFT] + ((x) & 0xff)) + +#define BXR2(sbc, off) \ + bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) + +static int +isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp, + u_int16_t *semap, u_int16_t *mbp) +{ + struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; + u_int16_t isr, sema; + + isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); + sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); + isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); + isr &= INT_PENDING_MASK(isp); + sema &= BIU_SEMA_LOCK; + if (isr == 0 && sema == 0) { + return (0); + } + *isrp = isr; + if ((*semap = sema) != 0) { + *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); + } + return (1); +} + +static u_int16_t +isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) +{ + struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; + int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; + offset += (regoff & 0xff); + return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); +} + +static void +isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val) +{ + struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; + int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; + offset += (regoff & 0xff); + bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); +} + +static int +isp_sbus_mbxdma(struct ispsoftc *isp) +{ + struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; + bus_dma_tag_t dmatag = sbc->sbus_dmatag; + bus_dma_segment_t reqseg, rspseg; + int reqrs, rsprs, i, progress; + size_t n; + bus_size_t len; + + if (isp->isp_rquest_dma) + return (0); + + n = isp->isp_maxcmds * sizeof (XS_T *); + isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); + if (isp->isp_xflist == NULL) { + isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); + return (1); + } + bzero(isp->isp_xflist, n); + n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; + sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); + if (sbc->sbus_dmamap == NULL) { + free(isp->isp_xflist, M_DEVBUF); + isp->isp_xflist = NULL; + isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); + return (1); + } + for (i = 0; i < isp->isp_maxcmds; i++) { + /* Allocate a DMA handle */ + if (bus_dmamap_create(dmatag, MAXPHYS, 1, MAXPHYS, 0, + BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { + isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); + break; + } + } + if (i < isp->isp_maxcmds) { + while (--i >= 0) { + bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); + } + free(isp->isp_xflist, M_DEVBUF); + free(sbc->sbus_dmamap, M_DEVBUF); + isp->isp_xflist = NULL; + sbc->sbus_dmamap = NULL; + return (1); + } + + /* + * Allocate and map the request and response queues + */ + progress = 0; + len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); + if (bus_dmamem_alloc(dmatag, len, 0, 0, &reqseg, 1, &reqrs, + BUS_DMA_NOWAIT)) { + goto dmafail; + } + progress++; + if (bus_dmamem_map(dmatag, &reqseg, reqrs, len, + (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { + goto dmafail; + } + progress++; + if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, + &sbc->sbus_rquest_dmamap) != 0) { + goto dmafail; + } + progress++; + if (bus_dmamap_load(dmatag, sbc->sbus_rquest_dmamap, + isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { + goto dmafail; + } + progress++; + isp->isp_rquest_dma = sbc->sbus_rquest_dmamap->dm_segs[0].ds_addr; + + len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); + if (bus_dmamem_alloc(dmatag, len, 0, 0, &rspseg, 1, &rsprs, + BUS_DMA_NOWAIT)) { + goto dmafail; + } + progress++; + if (bus_dmamem_map(dmatag, &rspseg, rsprs, len, + (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { + goto dmafail; + } + progress++; + if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, + &sbc->sbus_result_dmamap) != 0) { + goto dmafail; + } + progress++; + if (bus_dmamap_load(dmatag, sbc->sbus_result_dmamap, + isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { + goto dmafail; + } + isp->isp_result_dma = sbc->sbus_result_dmamap->dm_segs[0].ds_addr; + + return (0); + +dmafail: + isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); + + if (progress >= 8) { + bus_dmamap_unload(dmatag, sbc->sbus_result_dmamap); + } + if (progress >= 7) { + bus_dmamap_destroy(dmatag, sbc->sbus_result_dmamap); + } + if (progress >= 6) { + bus_dmamem_unmap(dmatag, + isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); + } + if (progress >= 5) { + bus_dmamem_free(dmatag, &rspseg, rsprs); + } + + if (progress >= 4) { + bus_dmamap_unload(dmatag, sbc->sbus_rquest_dmamap); + } + if (progress >= 3) { + bus_dmamap_destroy(dmatag, sbc->sbus_rquest_dmamap); + } + if (progress >= 2) { + bus_dmamem_unmap(dmatag, + isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); + } + if (progress >= 1) { + bus_dmamem_free(dmatag, &reqseg, reqrs); + } + + for (i = 0; i < isp->isp_maxcmds; i++) { + bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); + } + free(sbc->sbus_dmamap, M_DEVBUF); + free(isp->isp_xflist, M_DEVBUF); + isp->isp_xflist = NULL; + sbc->sbus_dmamap = NULL; + return (1); +} + +/* + * Map a DMA request. + * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. + */ + +static int +isp_sbus_dmasetup(struct ispsoftc *isp, XS_T *xs, ispreq_t *rq, + u_int16_t *iptrp, u_int16_t optr) +{ + struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; + bus_dmamap_t dmap; + ispcontreq_t *crq; + int cansleep = (xs->flags & SCSI_NOSLEEP) == 0; + int in = (xs->flags & SCSI_DATA_IN) != 0; + + if (xs->datalen == 0) { + rq->req_seg_count = 1; + goto mbxsync; + } + + dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; + if (dmap->dm_nsegs != 0) { + panic("%s: dma map already allocated\n", isp->isp_name); + /* NOTREACHED */ + } + if (bus_dmamap_load(sbc->sbus_dmatag, dmap, xs->data, xs->datalen, + NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | + BUS_DMA_STREAMING) != 0) { + XS_SETERR(xs, HBA_BOTCH); + return (CMD_COMPLETE); + } + + bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, xs->datalen, + in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); + + if (in) { + rq->req_flags |= REQFLAG_DATA_IN; + } else { + rq->req_flags |= REQFLAG_DATA_OUT; + } + + if (XS_CDBLEN(xs) > 12) { + crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp); + *iptrp = ISP_NXT_QENTRY(*iptrp, RQUEST_QUEUE_LEN(isp)); + if (*iptrp == optr) { + isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); + bus_dmamap_unload(sbc->sbus_dmatag, dmap); + XS_SETERR(xs, HBA_BOTCH); + return (CMD_EAGAIN); + } + rq->req_seg_count = 2; + rq->req_dataseg[0].ds_count = 0; + rq->req_dataseg[0].ds_base = 0; + bzero((void *)crq, sizeof (*crq)); + crq->req_header.rqs_entry_count = 1; + crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; + crq->req_dataseg[0].ds_count = xs->datalen; + crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; + ISP_SBUSIFY_ISPHDR(isp, &crq->req_header) + } else { + rq->req_dataseg[0].ds_count = xs->datalen; + rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; + rq->req_seg_count = 1; + } + +mbxsync: + ISP_SWIZZLE_REQUEST(isp, rq); + bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_rquest_dmamap, 0, + sbc->sbus_rquest_dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); + return (CMD_QUEUED); +} + +static void +isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle) +{ + struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; + bus_dmamap_t dmap; + + dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; + + if (dmap->dm_nsegs == 0) { + panic("%s: dma map not already allocated\n", isp->isp_name); + /* NOTREACHED */ + } + bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, + xs->datalen, (xs->flags & SCSI_DATA_IN)? + BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); + bus_dmamap_unload(sbc->sbus_dmatag, dmap); +} |