mirror of
https://git.FreeBSD.org/src.git
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369934d602
- Use callout(9) instead of timeout(9). - Don't bother zero'ing the softc. - Destroy mutex on detach. Tested by: no one
374 lines
11 KiB
C
374 lines
11 KiB
C
/*-
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* Copyright (c) 2001,2002,2003 Søren Schmidt <sos@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/bio.h>
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#include <sys/conf.h>
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#include <sys/eventhandler.h>
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#include <sys/malloc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/stdarg.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <geom/geom_disk.h>
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#include "dev/pst/pst-iop.h"
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struct pst_softc {
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struct iop_softc *iop;
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struct i2o_lct_entry *lct;
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struct i2o_bsa_device *info;
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struct disk *disk;
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struct bio_queue_head queue;
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};
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struct pst_request {
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struct pst_softc *psc; /* pointer to softc */
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u_int32_t mfa; /* frame addreess */
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struct callout timeout; /* timeout timer */
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struct bio *bp; /* associated bio ptr */
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};
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/* prototypes */
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static disk_strategy_t pststrategy;
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static int pst_probe(device_t);
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static int pst_attach(device_t);
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static int pst_shutdown(device_t);
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static void pst_start(struct pst_softc *);
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static void pst_done(struct iop_softc *, u_int32_t, struct i2o_single_reply *);
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static int pst_rw(struct pst_request *);
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static void pst_timeout(void *);
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static void bpack(int8_t *, int8_t *, int);
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/* local vars */
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static MALLOC_DEFINE(M_PSTRAID, "pst", "Promise SuperTrak RAID driver");
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int
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pst_add_raid(struct iop_softc *sc, struct i2o_lct_entry *lct)
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{
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struct pst_softc *psc;
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device_t child = device_add_child(sc->dev, "pst", -1);
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if (!child)
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return ENOMEM;
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if (!(psc = malloc(sizeof(struct pst_softc),
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M_PSTRAID, M_NOWAIT | M_ZERO))) {
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device_delete_child(sc->dev, child);
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return ENOMEM;
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}
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psc->iop = sc;
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psc->lct = lct;
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device_set_softc(child, psc);
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return device_probe_and_attach(child);
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}
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static int
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pst_probe(device_t dev)
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{
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device_set_desc(dev, "Promise SuperTrak RAID");
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return 0;
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}
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static int
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pst_attach(device_t dev)
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{
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struct pst_softc *psc = device_get_softc(dev);
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struct i2o_get_param_reply *reply;
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struct i2o_device_identity *ident;
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int lun = device_get_unit(dev);
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int8_t name [32];
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if (!(reply = iop_get_util_params(psc->iop, psc->lct->local_tid,
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I2O_PARAMS_OPERATION_FIELD_GET,
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I2O_BSA_DEVICE_INFO_GROUP_NO)))
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return ENODEV;
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if (!(psc->info = (struct i2o_bsa_device *)
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malloc(sizeof(struct i2o_bsa_device), M_PSTRAID, M_NOWAIT))) {
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contigfree(reply, PAGE_SIZE, M_PSTIOP);
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return ENOMEM;
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}
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bcopy(reply->result, psc->info, sizeof(struct i2o_bsa_device));
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contigfree(reply, PAGE_SIZE, M_PSTIOP);
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if (!(reply = iop_get_util_params(psc->iop, psc->lct->local_tid,
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I2O_PARAMS_OPERATION_FIELD_GET,
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I2O_UTIL_DEVICE_IDENTITY_GROUP_NO)))
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return ENODEV;
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ident = (struct i2o_device_identity *)reply->result;
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#ifdef PSTDEBUG
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printf("pst: vendor=<%.16s> product=<%.16s>\n",
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ident->vendor, ident->product);
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printf("pst: description=<%.16s> revision=<%.8s>\n",
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ident->description, ident->revision);
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printf("pst: capacity=%lld blocksize=%d\n",
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psc->info->capacity, psc->info->block_size);
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#endif
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bpack(ident->vendor, ident->vendor, 16);
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bpack(ident->product, ident->product, 16);
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sprintf(name, "%s %s", ident->vendor, ident->product);
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contigfree(reply, PAGE_SIZE, M_PSTIOP);
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bioq_init(&psc->queue);
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psc->disk = disk_alloc();
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psc->disk->d_name = "pst";
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psc->disk->d_strategy = pststrategy;
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psc->disk->d_maxsize = 64 * 1024; /*I2O_SGL_MAX_SEGS * PAGE_SIZE;*/
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psc->disk->d_drv1 = psc;
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psc->disk->d_unit = lun;
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psc->disk->d_sectorsize = psc->info->block_size;
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psc->disk->d_mediasize = psc->info->capacity;
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psc->disk->d_fwsectors = 63;
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psc->disk->d_fwheads = 255;
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disk_create(psc->disk, DISK_VERSION);
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printf("pst%d: %lluMB <%.40s> [%lld/%d/%d] on %.16s\n", lun,
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(unsigned long long)psc->info->capacity / (1024 * 1024),
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name, psc->info->capacity/(512*255*63), 255, 63,
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device_get_nameunit(psc->iop->dev));
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EVENTHANDLER_REGISTER(shutdown_post_sync, pst_shutdown,
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dev, SHUTDOWN_PRI_FIRST);
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return 0;
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}
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static int
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pst_shutdown(device_t dev)
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{
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struct pst_softc *psc = device_get_softc(dev);
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struct i2o_bsa_cache_flush_message *msg;
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int mfa;
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mfa = iop_get_mfa(psc->iop);
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msg = (struct i2o_bsa_cache_flush_message *)(psc->iop->ibase + mfa);
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bzero(msg, sizeof(struct i2o_bsa_cache_flush_message));
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msg->version_offset = 0x01;
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msg->message_flags = 0x0;
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msg->message_size = sizeof(struct i2o_bsa_cache_flush_message) >> 2;
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msg->target_address = psc->lct->local_tid;
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msg->initiator_address = I2O_TID_HOST;
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msg->function = I2O_BSA_CACHE_FLUSH;
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msg->control_flags = 0x0; /* 0x80 = post progress reports */
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if (iop_queue_wait_msg(psc->iop, mfa, (struct i2o_basic_message *)msg))
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printf("pst: shutdown failed!\n");
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return 0;
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}
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static void
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pststrategy(struct bio *bp)
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{
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struct pst_softc *psc = bp->bio_disk->d_drv1;
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mtx_lock(&psc->iop->mtx);
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bioq_disksort(&psc->queue, bp);
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pst_start(psc);
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mtx_unlock(&psc->iop->mtx);
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}
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static void
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pst_start(struct pst_softc *psc)
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{
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struct pst_request *request;
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struct bio *bp;
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u_int32_t mfa;
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if (psc->iop->outstanding < (I2O_IOP_OUTBOUND_FRAME_COUNT - 1) &&
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(bp = bioq_first(&psc->queue))) {
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if ((mfa = iop_get_mfa(psc->iop)) != 0xffffffff) {
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bioq_remove(&psc->queue, bp);
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if (!(request = malloc(sizeof(struct pst_request),
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M_PSTRAID, M_NOWAIT | M_ZERO))) {
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printf("pst: out of memory in start\n");
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biofinish(request->bp, NULL, ENOMEM);
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iop_free_mfa(psc->iop, mfa);
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return;
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}
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callout_init_mtx(&request->timeout, &psc->iop->mtx, 0);
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psc->iop->outstanding++;
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request->psc = psc;
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request->mfa = mfa;
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request->bp = bp;
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if (pst_rw(request)) {
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biofinish(request->bp, NULL, EIO);
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iop_free_mfa(request->psc->iop, request->mfa);
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psc->iop->outstanding--;
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free(request, M_PSTRAID);
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}
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}
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}
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}
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static void
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pst_done(struct iop_softc *sc, u_int32_t mfa, struct i2o_single_reply *reply)
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{
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struct pst_request *request =
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(struct pst_request *)reply->transaction_context;
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struct pst_softc *psc = request->psc;
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callout_stop(&request->timeout);
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request->bp->bio_resid = request->bp->bio_bcount - reply->donecount;
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biofinish(request->bp, NULL, reply->status ? EIO : 0);
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free(request, M_PSTRAID);
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psc->iop->reg->oqueue = mfa;
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psc->iop->outstanding--;
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pst_start(psc);
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}
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int
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pst_rw(struct pst_request *request)
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{
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struct i2o_bsa_rw_block_message *msg;
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int sgl_flag;
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msg = (struct i2o_bsa_rw_block_message *)
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(request->psc->iop->ibase + request->mfa);
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bzero(msg, sizeof(struct i2o_bsa_rw_block_message));
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msg->version_offset = 0x81;
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msg->message_flags = 0x0;
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msg->message_size = sizeof(struct i2o_bsa_rw_block_message) >> 2;
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msg->target_address = request->psc->lct->local_tid;
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msg->initiator_address = I2O_TID_HOST;
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switch (request->bp->bio_cmd) {
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case BIO_READ:
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msg->function = I2O_BSA_BLOCK_READ;
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msg->control_flags = 0x0; /* 0x0c = read cache + readahead */
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msg->fetch_ahead = 0x0; /* 8 Kb */
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sgl_flag = 0;
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break;
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case BIO_WRITE:
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msg->function = I2O_BSA_BLOCK_WRITE;
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msg->control_flags = 0x0; /* 0x10 = write behind cache */
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msg->fetch_ahead = 0x0;
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sgl_flag = I2O_SGL_DIR;
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break;
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default:
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printf("pst: unknown command type 0x%02x\n", request->bp->bio_cmd);
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return -1;
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}
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msg->initiator_context = (u_int32_t)pst_done;
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msg->transaction_context = (u_int32_t)request;
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msg->time_multiplier = 1;
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msg->bytecount = request->bp->bio_bcount;
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msg->lba = ((u_int64_t)request->bp->bio_pblkno) * (DEV_BSIZE * 1LL);
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if (!iop_create_sgl((struct i2o_basic_message *)msg, request->bp->bio_data,
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request->bp->bio_bcount, sgl_flag))
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return -1;
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request->psc->iop->reg->iqueue = request->mfa;
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if (!dumping)
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callout_reset(&request->timeout, 10 * hz, pst_timeout, request);
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return 0;
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}
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static void
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pst_timeout(void *arg)
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{
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struct pst_request *request;
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request = arg;
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printf("pst: timeout mfa=0x%08x cmd=0x%02x\n",
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request->mfa, request->bp->bio_cmd);
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mtx_assert(&request->psc->iop->mtx, MA_OWNED);
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iop_free_mfa(request->psc->iop, request->mfa);
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if ((request->mfa = iop_get_mfa(request->psc->iop)) == 0xffffffff) {
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printf("pst: timeout no mfa possible\n");
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biofinish(request->bp, NULL, EIO);
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request->psc->iop->outstanding--;
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return;
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}
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if (pst_rw(request)) {
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iop_free_mfa(request->psc->iop, request->mfa);
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biofinish(request->bp, NULL, EIO);
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request->psc->iop->outstanding--;
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}
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}
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static void
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bpack(int8_t *src, int8_t *dst, int len)
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{
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int i, j, blank;
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int8_t *ptr, *buf = dst;
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for (i = j = blank = 0 ; i < len; i++) {
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if (blank && src[i] == ' ')
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continue;
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if (blank && src[i] != ' ') {
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dst[j++] = src[i];
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blank = 0;
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continue;
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}
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if (src[i] == ' ') {
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blank = 1;
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if (i == 0)
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continue;
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}
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dst[j++] = src[i];
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}
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if (j < len)
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dst[j] = 0x00;
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for (ptr = buf; ptr < buf+len; ++ptr)
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if (!*ptr)
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*ptr = ' ';
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for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr)
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*ptr = 0;
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}
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static device_method_t pst_methods[] = {
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DEVMETHOD(device_probe, pst_probe),
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DEVMETHOD(device_attach, pst_attach),
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{ 0, 0 }
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};
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static driver_t pst_driver = {
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"pst",
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pst_methods,
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sizeof(struct pst_softc),
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};
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static devclass_t pst_devclass;
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DRIVER_MODULE(pst, pstpci, pst_driver, pst_devclass, 0, 0);
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