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NetBSD/sys/dev/ic/icp.c

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/* $NetBSD: icp.c,v 1.2 2002/06/01 23:50:58 lukem Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* 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, 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 1999, 2000 Niklas Hallqvist. 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, 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Niklas Hallqvist.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* from OpenBSD: gdt_common.c,v 1.12 2001/07/04 06:43:18 niklas Exp
*/
/*
* This driver would not have written if it was not for the hardware donations
* from both ICP-Vortex and <20>ko.neT. I want to thank them for their support.
*
* Re-worked for NetBSD by Andrew Doran. Test hardware kindly supplied by
* Intel.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: icp.c,v 1.2 2002/06/01 23:50:58 lukem Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/queue.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/endian.h>
#include <sys/malloc.h>
#include <sys/disk.h>
#include <uvm/uvm_extern.h>
#include <machine/bswap.h>
#include <machine/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/ic/icpreg.h>
#include <dev/ic/icpvar.h>
int icp_async_event(struct icp_softc *, int);
void icp_ccb_submit(struct icp_softc *icp, struct icp_ccb *ic);
void icp_chain(struct icp_softc *);
int icp_print(void *, const char *);
int icp_submatch(struct device *, struct cfdata *, void *);
void icp_watchdog(void *);
int
icp_init(struct icp_softc *icp, const char *intrstr)
{
struct icp_attach_args icpa;
struct icp_binfo binfo;
struct icp_ccb *ic;
u_int16_t cdev_cnt;
int i, j, state, feat, nsegs, rv, noscsi, nocache;
noscsi = 0;
nocache = 0;
if (intrstr != NULL)
printf("%s: interrupting at %s\n", icp->icp_dv.dv_xname,
intrstr);
SIMPLEQ_INIT(&icp->icp_ccb_queue);
SIMPLEQ_INIT(&icp->icp_ccb_freelist);
callout_init(&icp->icp_wdog_callout);
/*
* Allocate a scratch area.
*/
if (bus_dmamap_create(icp->icp_dmat, ICP_SCRATCH_SIZE, 1,
ICP_SCRATCH_SIZE, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
&icp->icp_scr_dmamap) != 0) {
printf("%s: cannot create scratch dmamap\n",
icp->icp_dv.dv_xname);
return (1);
}
state++;
if (bus_dmamem_alloc(icp->icp_dmat, ICP_SCRATCH_SIZE, PAGE_SIZE, 0,
icp->icp_scr_seg, 1, &nsegs, BUS_DMA_NOWAIT) != 0) {
printf("%s: cannot alloc scratch dmamem\n",
icp->icp_dv.dv_xname);
goto bail_out;
}
state++;
if (bus_dmamem_map(icp->icp_dmat, icp->icp_scr_seg, nsegs,
ICP_SCRATCH_SIZE, &icp->icp_scr, 0)) {
printf("%s: cannot map scratch dmamem\n", icp->icp_dv.dv_xname);
goto bail_out;
}
state++;
if (bus_dmamap_load(icp->icp_dmat, icp->icp_scr_dmamap, icp->icp_scr,
ICP_SCRATCH_SIZE, NULL, BUS_DMA_NOWAIT)) {
printf("%s: cannot load scratch dmamap\n", icp->icp_dv.dv_xname);
goto bail_out;
}
state++;
/*
* Allocate and initialize the command control blocks.
*/
ic = malloc(sizeof(*ic) * ICP_NCCBS, M_DEVBUF, M_NOWAIT | M_ZERO);
if ((icp->icp_ccbs = ic) == NULL) {
printf("%s: malloc() failed\n", icp->icp_dv.dv_xname);
goto bail_out;
}
state++;
for (i = 0; i < ICP_NCCBS; i++, ic++) {
/*
* The first two command indexes have special meanings, so
* we can't use them.
*/
ic->ic_ident = i + 2;
rv = bus_dmamap_create(icp->icp_dmat, ICP_MAX_XFER,
ICP_MAXSG, ICP_MAX_XFER, 0,
BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
&ic->ic_xfer_map);
if (rv != 0)
break;
icp->icp_nccbs++;
icp_ccb_free(icp, ic);
}
#ifdef DIAGNOSTIC
if (icp->icp_nccbs != ICP_NCCBS)
printf("%s: %d/%d CCBs usable\n", icp->icp_dv.dv_xname,
icp->icp_nccbs, ICP_NCCBS);
#endif
/*
* Initalize the controller.
*/
if (!icp_cmd(icp, ICP_SCREENSERVICE, ICP_INIT, 0, 0, 0)) {
printf("%s: screen service init error %d\n",
icp->icp_dv.dv_xname, icp->icp_status);
goto bail_out;
}
if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_INIT, ICP_LINUX_OS, 0, 0)) {
printf("%s: cache service init error %d\n",
icp->icp_dv.dv_xname, icp->icp_status);
goto bail_out;
}
icp_cmd(icp, ICP_CACHESERVICE, ICP_UNFREEZE_IO, 0, 0, 0);
if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_MOUNT, 0xffff, 1, 0)) {
printf("%s: cache service mount error %d\n",
icp->icp_dv.dv_xname, icp->icp_status);
goto bail_out;
}
if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_INIT, ICP_LINUX_OS, 0, 0)) {
printf("%s: cache service post-mount init error %d\n",
icp->icp_dv.dv_xname, icp->icp_status);
goto bail_out;
}
cdev_cnt = (u_int16_t)icp->icp_info;
if (!icp_cmd(icp, ICP_SCSIRAWSERVICE, ICP_INIT, 0, 0, 0)) {
printf("%s: raw service init error %d\n",
icp->icp_dv.dv_xname, icp->icp_status);
goto bail_out;
}
/*
* Set/get raw service features (scatter/gather).
*/
feat = 0;
if (icp_cmd(icp, ICP_SCSIRAWSERVICE, ICP_SET_FEAT, ICP_SCATTER_GATHER,
0, 0))
if (icp_cmd(icp, ICP_SCSIRAWSERVICE, ICP_GET_FEAT, 0, 0, 0))
feat = icp->icp_info;
if ((feat & ICP_SCATTER_GATHER) == 0) {
#ifdef DIAGNOSTIC
printf("%s: scatter/gather not supported (raw service)\n",
icp->icp_dv.dv_xname);
#endif
noscsi = 1;
}
/*
* Set/get cache service features (scatter/gather).
*/
feat = 0;
if (icp_cmd(icp, ICP_CACHESERVICE, ICP_SET_FEAT, 0,
ICP_SCATTER_GATHER, 0))
if (icp_cmd(icp, ICP_CACHESERVICE, ICP_GET_FEAT, 0, 0, 0))
feat = icp->icp_info;
if ((feat & ICP_SCATTER_GATHER) == 0) {
#ifdef DIAGNOSTIC
printf("%s: scatter/gather not supported (cache service)\n",
icp->icp_dv.dv_xname);
#endif
nocache = 1;
}
/*
* Pull some information from the board and dump.
*/
if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, ICP_BOARD_INFO,
ICP_INVALID_CHANNEL, sizeof(struct icp_binfo))) {
printf("%s: unable to retrive board info\n",
icp->icp_dv.dv_xname);
goto bail_out;
}
memcpy(&binfo, icp->icp_scr, sizeof(binfo));
printf("%s: model <%s>, firmware <%s>, %d channel(s), %dMB memory\n",
icp->icp_dv.dv_xname, binfo.bi_type_string, binfo.bi_raid_string,
binfo.bi_chan_count, le32toh(binfo.bi_memsize) >> 20);
/*
* Determine the number of devices, and number of openings per
* device.
*/
if (!nocache) {
for (j = 0; j < cdev_cnt && j < ICP_MAX_HDRIVES; j++) {
if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_INFO, j, 0,
0))
continue;
icp->icp_cdr[j].cd_size = icp->icp_info;
icp->icp_ndevs++;
if (icp_cmd(icp, ICP_CACHESERVICE, ICP_DEVTYPE, j, 0,
0))
icp->icp_cdr[j].cd_type = icp->icp_info;
}
}
if (!noscsi)
icp->icp_ndevs += binfo.bi_chan_count;
if (icp->icp_ndevs != 0)
icp->icp_openings =
(icp->icp_nccbs - ICP_NCCB_RESERVE) / icp->icp_ndevs;
#ifdef ICP_DEBUG
printf("%s: %d openings per device\n", icp->icp_dv.dv_xname,
icp->icp_openings);
#endif
/*
* Attach SCSI channels.
*/
if (!noscsi) {
struct icp_ioc_version *iv;
struct icp_rawioc *ri;
struct icp_getch *gc;
iv = (struct icp_ioc_version *)icp->icp_scr;
iv->iv_version = htole32(ICP_IOC_NEWEST);
iv->iv_listents = ICP_MAXBUS;
iv->iv_firstchan = 0;
iv->iv_lastchan = ICP_MAXBUS - 1;
iv->iv_listoffset = htole32(sizeof(*iv));
if (icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL,
ICP_IOCHAN_RAW_DESC, ICP_INVALID_CHANNEL,
sizeof(*iv) + ICP_MAXBUS * sizeof(*ri))) {
ri = (struct icp_rawioc *)(iv + 1);
for (j = 0; j < binfo.bi_chan_count; j++, ri++)
icp->icp_bus_id[j] = ri->ri_procid;
} else {
/*
* Fall back to the old method.
*/
gc = (struct icp_getch *)icp->icp_scr;
for (i = 0; j < binfo.bi_chan_count; j++) {
if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL,
ICP_SCSI_CHAN_CNT | ICP_L_CTRL_PATTERN,
ICP_IO_CHANNEL | ICP_INVALID_CHANNEL,
sizeof(*gc))) {
printf("%s: unable to get chan info",
icp->icp_dv.dv_xname);
goto bail_out;
}
icp->icp_bus_id[j] = gc->gc_scsiid;
}
}
for (j = 0; j < binfo.bi_chan_count; j++) {
if (icp->icp_bus_id[j] > ICP_MAXID_FC)
icp->icp_bus_id[j] = ICP_MAXID_FC;
icpa.icpa_unit = j + ICPA_UNIT_SCSI;
config_found_sm(&icp->icp_dv, &icpa, icp_print,
icp_submatch);
}
}
/*
* Attach cache devices.
*/
if (!nocache) {
for (j = 0; j < cdev_cnt && j < ICP_MAX_HDRIVES; j++) {
if (icp->icp_cdr[j].cd_size == 0)
continue;
icpa.icpa_unit = j;
config_found_sm(&icp->icp_dv, &icpa, icp_print,
icp_submatch);
}
}
/*
* Start the watchdog.
*/
icp_watchdog(icp);
return (0);
bail_out:
if (state > 4)
for (j = 0; j < i; j++)
bus_dmamap_destroy(icp->icp_dmat,
icp->icp_ccbs[j].ic_xfer_map);
if (state > 3)
free(icp->icp_ccbs, M_DEVBUF);
if (state > 2)
bus_dmamap_unload(icp->icp_dmat, icp->icp_scr_dmamap);
if (state > 1)
bus_dmamem_unmap(icp->icp_dmat, icp->icp_scr,
ICP_SCRATCH_SIZE);
if (state > 0)
bus_dmamem_free(icp->icp_dmat, icp->icp_scr_seg, nsegs);
bus_dmamap_destroy(icp->icp_dmat, icp->icp_scr_dmamap);
return (1);
}
void
icp_watchdog(void *cookie)
{
struct icp_softc *icp;
int s;
icp = cookie;
s = splbio();
icp_intr(icp);
if (! SIMPLEQ_EMPTY(&icp->icp_ccb_queue))
icp_ccb_enqueue(icp, NULL);
splx(s);
callout_reset(&icp->icp_wdog_callout, hz * ICP_WATCHDOG_FREQ,
icp_watchdog, icp);
}
int
icp_print(void *aux, const char *pnp)
{
struct icp_attach_args *icpa;
const char *str;
icpa = (struct icp_attach_args *)aux;
if (pnp != NULL) {
if (icpa->icpa_unit < ICPA_UNIT_SCSI)
str = "block device";
else
str = "SCSI channel";
printf("%s at %s", str, pnp);
}
printf(" unit %d", icpa->icpa_unit);
return (UNCONF);
}
int
icp_submatch(struct device *parent, struct cfdata *cf, void *aux)
{
struct icp_attach_args *icpa;
icpa = (struct icp_attach_args *)aux;
if (cf->icpacf_unit != ICPCF_UNIT_DEFAULT &&
cf->icpacf_unit != icpa->icpa_unit)
return (0);
return ((*cf->cf_attach->ca_match)(parent, cf, aux));
}
int
icp_async_event(struct icp_softc *icp, int val)
{
/* XXX */
return (1);
}
int
icp_intr(void *cookie)
{
struct icp_softc *icp;
struct icp_intr_ctx ctx;
struct icp_ccb *ic;
icp = cookie;
ctx.istatus = (*icp->icp_get_status)(icp);
if (!ctx.istatus) {
icp->icp_status = ICP_S_NO_STATUS;
return (0);
}
(*icp->icp_intr)(icp, &ctx);
icp->icp_status = ctx.cmd_status;
icp->icp_info = ctx.info;
icp->icp_info2 = ctx.info2;
switch (ctx.istatus) {
case ICP_ASYNCINDEX:
icp_async_event(icp, ctx.service);
return (1);
case ICP_SPEZINDEX:
printf("%s: uninitialized or unknown service (%d/%d)\n",
icp->icp_dv.dv_xname, ctx.info, ctx.info2);
return (1);
}
if ((ctx.istatus - 2) > icp->icp_nccbs)
panic("icp_intr: bad command index returned");
ic = &icp->icp_ccbs[ctx.istatus - 2];
ic->ic_status = icp->icp_status;
if ((ic->ic_flags & IC_ALLOCED) == 0)
panic("icp_intr: inactive CCB identified");
switch (icp->icp_status) {
case ICP_S_BSY:
#ifdef ICP_DEBUG
printf("%s: ICP_S_BSY received\n", icp->icp_dv.dv_xname);
#endif
SIMPLEQ_INSERT_HEAD(&icp->icp_ccb_queue, ic, ic_chain);
break;
default:
ic->ic_flags |= IC_COMPLETE;
if ((ic->ic_flags & IC_WAITING) != 0)
wakeup(ic);
else if (ic->ic_intr != NULL)
(*ic->ic_intr)(ic);
if (! SIMPLEQ_EMPTY(&icp->icp_ccb_queue))
icp_ccb_enqueue(icp, NULL);
break;
}
return (1);
}
int
icp_cmd(struct icp_softc *icp, u_int8_t service, u_int16_t opcode,
u_int32_t arg1, u_int32_t arg2, u_int32_t arg3)
{
struct icp_ioctlcmd *icmd;
struct icp_cachecmd *cc;
struct icp_rawcmd *rc;
int retries, rv;
struct icp_ccb *ic;
retries = ICP_RETRIES;
do {
ic = icp_ccb_alloc(icp);
memset(&ic->ic_cmd, 0, sizeof(ic->ic_cmd));
ic->ic_cmd.cmd_opcode = htole16(opcode);
switch (service) {
case ICP_CACHESERVICE:
if (opcode == ICP_IOCTL) {
icmd = &ic->ic_cmd.cmd_packet.ic;
icmd->ic_subfunc = htole16(arg1);
icmd->ic_channel = htole32(arg2);
icmd->ic_bufsize = htole32(arg3);
icmd->ic_addr =
htole32(icp->icp_scr_seg[0].ds_addr);
bus_dmamap_sync(icp->icp_dmat,
icp->icp_scr_dmamap, 0, arg3,
BUS_DMASYNC_PREWRITE |
BUS_DMASYNC_PREREAD);
} else {
cc = &ic->ic_cmd.cmd_packet.cc;
cc->cc_deviceno = htole16(arg1);
cc->cc_blockno = htole32(arg2);
}
break;
case ICP_SCSIRAWSERVICE:
rc = &ic->ic_cmd.cmd_packet.rc;
rc->rc_direction = htole32(arg1);
rc->rc_bus = arg2;
rc->rc_target = arg3;
rc->rc_lun = arg3 >> 8;
break;
}
ic->ic_service = service;
ic->ic_cmdlen = sizeof(ic->ic_cmd);
rv = icp_ccb_poll(icp, ic, 10000);
switch (service) {
case ICP_CACHESERVICE:
if (opcode == ICP_IOCTL) {
bus_dmamap_sync(icp->icp_dmat,
icp->icp_scr_dmamap, 0, arg3,
BUS_DMASYNC_POSTWRITE |
BUS_DMASYNC_POSTREAD);
}
break;
}
icp_ccb_free(icp, ic);
} while (rv != 0 && --retries > 0);
return (icp->icp_status == ICP_S_OK);
}
struct icp_ccb *
icp_ccb_alloc(struct icp_softc *icp)
{
struct icp_ccb *ic;
int s;
s = splbio();
ic = SIMPLEQ_FIRST(&icp->icp_ccb_freelist);
SIMPLEQ_REMOVE_HEAD(&icp->icp_ccb_freelist, ic_chain);
splx(s);
ic->ic_flags = IC_ALLOCED;
return (ic);
}
void
icp_ccb_free(struct icp_softc *icp, struct icp_ccb *ic)
{
int s;
s = splbio();
ic->ic_flags = 0;
ic->ic_intr = NULL;
SIMPLEQ_INSERT_HEAD(&icp->icp_ccb_freelist, ic, ic_chain);
splx(s);
}
void
icp_ccb_enqueue(struct icp_softc *icp, struct icp_ccb *ic)
{
int s;
s = splbio();
if (ic != NULL)
SIMPLEQ_INSERT_TAIL(&icp->icp_ccb_queue, ic, ic_chain);
while ((ic = SIMPLEQ_FIRST(&icp->icp_ccb_queue)) != NULL) {
if ((*icp->icp_test_busy)(icp))
break;
icp_ccb_submit(icp, ic);
SIMPLEQ_REMOVE_HEAD(&icp->icp_ccb_queue, ic_chain);
}
splx(s);
}
int
icp_ccb_map(struct icp_softc *icp, struct icp_ccb *ic, void *data, int size,
int dir)
{
struct icp_sg *sg;
int nsegs, i, rv;
bus_dmamap_t xfer;
xfer = ic->ic_xfer_map;
rv = bus_dmamap_load(icp->icp_dmat, xfer, data, size, NULL,
BUS_DMA_NOWAIT | BUS_DMA_STREAMING |
((dir & IC_XFER_IN) ? BUS_DMA_READ : BUS_DMA_WRITE));
if (rv != 0)
return (rv);
nsegs = xfer->dm_nsegs;
ic->ic_xfer_size = size;
ic->ic_nsgent = nsegs;
ic->ic_flags |= dir;
sg = ic->ic_sg;
if (sg != NULL) {
for (i = 0; i < nsegs; i++, sg++) {
sg->sg_addr = htole32(xfer->dm_segs[i].ds_addr);
sg->sg_len = htole32(xfer->dm_segs[i].ds_len);
}
} else if (nsegs > 1)
panic("icp_ccb_map: no SG list specified, but nsegs > 1\n");
if ((dir & IC_XFER_OUT) != 0)
i = BUS_DMASYNC_PREWRITE;
else /* if ((dir & IC_XFER_IN) != 0) */
i = BUS_DMASYNC_PREREAD;
bus_dmamap_sync(icp->icp_dmat, xfer, 0, ic->ic_xfer_size, i);
return (0);
}
void
icp_ccb_unmap(struct icp_softc *icp, struct icp_ccb *ic)
{
int i;
if ((ic->ic_flags & IC_XFER_OUT) != 0)
i = BUS_DMASYNC_POSTWRITE;
else /* if ((ic->ic_flags & IC_XFER_IN) != 0) */
i = BUS_DMASYNC_POSTREAD;
bus_dmamap_sync(icp->icp_dmat, ic->ic_xfer_map, 0, ic->ic_xfer_size, i);
bus_dmamap_unload(icp->icp_dmat, ic->ic_xfer_map);
}
int
icp_ccb_poll(struct icp_softc *icp, struct icp_ccb *ic, int timo)
{
int rv;
for (timo = ICP_BUSY_WAIT_MS * 100; timo != 0; timo--) {
if (!(*icp->icp_test_busy)(icp))
break;
DELAY(10);
}
if (timo == 0) {
printf("%s: submit: busy\n", icp->icp_dv.dv_xname);
return (EAGAIN);
}
icp_ccb_submit(icp, ic);
for (timo *= 10; timo != 0; timo--) {
DELAY(100);
icp_intr(icp);
if ((ic->ic_flags & IC_COMPLETE) != 0)
break;
}
if (timo != 0) {
if (ic->ic_status != ICP_S_OK) {
#ifdef ICP_DEBUG
printf("%s: request failed; status=0x%04x\n",
icp->icp_dv.dv_xname, ic->ic_status);
#endif
rv = EIO;
} else
rv = 0;
} else {
printf("%s: command timed out\n", icp->icp_dv.dv_xname);
rv = EIO;
}
while ((*icp->icp_test_busy)(icp) != 0)
DELAY(10);
return (rv);
}
int
icp_ccb_wait(struct icp_softc *icp, struct icp_ccb *ic, int timo)
{
int s, rv;
ic->ic_flags |= IC_WAITING;
s = splbio();
icp_ccb_enqueue(icp, ic);
if ((rv = tsleep(ic, PRIBIO, "icpwccb", mstohz(timo))) != 0) {
splx(s);
return (rv);
}
splx(s);
if (ic->ic_status != ICP_S_OK) {
printf("%s: command failed; status=%x\n", icp->icp_dv.dv_xname,
ic->ic_status);
return (EIO);
}
return (0);
}
void
icp_ccb_submit(struct icp_softc *icp, struct icp_ccb *ic)
{
ic->ic_cmdlen = (ic->ic_cmdlen + 3) & ~3;
(*icp->icp_set_sema0)(icp);
DELAY(10);
ic->ic_cmd.cmd_boardnode = htole32(ICP_LOCALBOARD);
ic->ic_cmd.cmd_cmdindex = htole32(ic->ic_ident);
(*icp->icp_copy_cmd)(icp, ic);
(*icp->icp_release_event)(icp, ic);
}
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