FreeBSD-5.3/sys/dev/pst/pst-raid.c
/*-
* Copyright (c) 2001,2002,2003 Søren Schmidt <sos@FreeBSD.org>
* 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,
* without modification, immediately at the beginning of the file.
* 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. 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/dev/pst/pst-raid.c,v 1.13.2.1 2004/10/02 14:14:27 scottl Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/bio.h>
#include <sys/conf.h>
#include <sys/eventhandler.h>
#include <sys/malloc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/stdarg.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <geom/geom_disk.h>
#include "dev/pst/pst-iop.h"
struct pst_softc {
struct iop_softc *iop;
struct i2o_lct_entry *lct;
struct i2o_bsa_device *info;
struct disk *disk;
struct bio_queue_head queue;
};
struct pst_request {
struct pst_softc *psc; /* pointer to softc */
u_int32_t mfa; /* frame addreess */
struct callout_handle timeout_handle; /* handle for untimeout */
struct bio *bp; /* associated bio ptr */
};
/* prototypes */
static disk_strategy_t pststrategy;
static int pst_probe(device_t);
static int pst_attach(device_t);
static int pst_shutdown(device_t);
static void pst_start(struct pst_softc *);
static void pst_done(struct iop_softc *, u_int32_t, struct i2o_single_reply *);
static int pst_rw(struct pst_request *);
static void pst_timeout(struct pst_request *);
static void bpack(int8_t *, int8_t *, int);
/* local vars */
static MALLOC_DEFINE(M_PSTRAID, "pst", "Promise SuperTrak RAID driver");
int
pst_add_raid(struct iop_softc *sc, struct i2o_lct_entry *lct)
{
struct pst_softc *psc;
device_t child = device_add_child(sc->dev, "pst", -1);
if (!child)
return ENOMEM;
if (!(psc = malloc(sizeof(struct pst_softc),
M_PSTRAID, M_NOWAIT | M_ZERO))) {
device_delete_child(sc->dev, child);
return ENOMEM;
}
psc->iop = sc;
psc->lct = lct;
device_set_softc(child, psc);
return bus_generic_attach(sc->dev);
}
static int
pst_probe(device_t dev)
{
device_set_desc(dev, "Promise SuperTrak RAID");
return 0;
}
static int
pst_attach(device_t dev)
{
struct pst_softc *psc = device_get_softc(dev);
struct i2o_get_param_reply *reply;
struct i2o_device_identity *ident;
int lun = device_get_unit(dev);
int8_t name [32];
if (!(reply = iop_get_util_params(psc->iop, psc->lct->local_tid,
I2O_PARAMS_OPERATION_FIELD_GET,
I2O_BSA_DEVICE_INFO_GROUP_NO)))
return ENODEV;
if (!(psc->info = (struct i2o_bsa_device *)
malloc(sizeof(struct i2o_bsa_device), M_PSTRAID, M_NOWAIT))) {
contigfree(reply, PAGE_SIZE, M_PSTIOP);
return ENOMEM;
}
bcopy(reply->result, psc->info, sizeof(struct i2o_bsa_device));
contigfree(reply, PAGE_SIZE, M_PSTIOP);
if (!(reply = iop_get_util_params(psc->iop, psc->lct->local_tid,
I2O_PARAMS_OPERATION_FIELD_GET,
I2O_UTIL_DEVICE_IDENTITY_GROUP_NO)))
return ENODEV;
ident = (struct i2o_device_identity *)reply->result;
#ifdef PSTDEBUG
printf("pst: vendor=<%.16s> product=<%.16s>\n",
ident->vendor, ident->product);
printf("pst: description=<%.16s> revision=<%.8s>\n",
ident->description, ident->revision);
printf("pst: capacity=%lld blocksize=%d\n",
psc->info->capacity, psc->info->block_size);
#endif
bpack(ident->vendor, ident->vendor, 16);
bpack(ident->product, ident->product, 16);
sprintf(name, "%s %s", ident->vendor, ident->product);
contigfree(reply, PAGE_SIZE, M_PSTIOP);
bioq_init(&psc->queue);
psc->disk = disk_alloc();
psc->disk->d_name = "pst";
psc->disk->d_strategy = pststrategy;
psc->disk->d_maxsize = 64 * 1024; /*I2O_SGL_MAX_SEGS * PAGE_SIZE;*/
psc->disk->d_drv1 = psc;
psc->disk->d_unit = lun;
psc->disk->d_sectorsize = psc->info->block_size;
psc->disk->d_mediasize = psc->info->capacity;
psc->disk->d_fwsectors = 63;
psc->disk->d_fwheads = 255;
disk_create(psc->disk, DISK_VERSION);
printf("pst%d: %lluMB <%.40s> [%lld/%d/%d] on %.16s\n", lun,
(unsigned long long)psc->info->capacity / (1024 * 1024),
name, psc->info->capacity/(512*255*63), 255, 63,
device_get_nameunit(psc->iop->dev));
EVENTHANDLER_REGISTER(shutdown_post_sync, pst_shutdown,
dev, SHUTDOWN_PRI_FIRST);
return 0;
}
static int
pst_shutdown(device_t dev)
{
struct pst_softc *psc = device_get_softc(dev);
struct i2o_bsa_cache_flush_message *msg;
int mfa;
mfa = iop_get_mfa(psc->iop);
msg = (struct i2o_bsa_cache_flush_message *)(psc->iop->ibase + mfa);
bzero(msg, sizeof(struct i2o_bsa_cache_flush_message));
msg->version_offset = 0x01;
msg->message_flags = 0x0;
msg->message_size = sizeof(struct i2o_bsa_cache_flush_message) >> 2;
msg->target_address = psc->lct->local_tid;
msg->initiator_address = I2O_TID_HOST;
msg->function = I2O_BSA_CACHE_FLUSH;
msg->control_flags = 0x0; /* 0x80 = post progress reports */
if (iop_queue_wait_msg(psc->iop, mfa, (struct i2o_basic_message *)msg))
printf("pst: shutdown failed!\n");
return 0;
}
static void
pststrategy(struct bio *bp)
{
struct pst_softc *psc = bp->bio_disk->d_drv1;
mtx_lock(&psc->iop->mtx);
bioq_disksort(&psc->queue, bp);
pst_start(psc);
mtx_unlock(&psc->iop->mtx);
}
static void
pst_start(struct pst_softc *psc)
{
struct pst_request *request;
struct bio *bp;
u_int32_t mfa;
if (psc->iop->outstanding < (I2O_IOP_OUTBOUND_FRAME_COUNT - 1) &&
(bp = bioq_first(&psc->queue))) {
if ((mfa = iop_get_mfa(psc->iop)) != 0xffffffff) {
bioq_remove(&psc->queue, bp);
if (!(request = malloc(sizeof(struct pst_request),
M_PSTRAID, M_NOWAIT | M_ZERO))) {
printf("pst: out of memory in start\n");
biofinish(request->bp, NULL, ENOMEM);
iop_free_mfa(psc->iop, mfa);
return;
}
psc->iop->outstanding++;
request->psc = psc;
request->mfa = mfa;
request->bp = bp;
if (pst_rw(request)) {
biofinish(request->bp, NULL, EIO);
iop_free_mfa(request->psc->iop, request->mfa);
psc->iop->outstanding--;
free(request, M_PSTRAID);
}
}
}
}
static void
pst_done(struct iop_softc *sc, u_int32_t mfa, struct i2o_single_reply *reply)
{
struct pst_request *request =
(struct pst_request *)reply->transaction_context;
struct pst_softc *psc = request->psc;
untimeout((timeout_t *)pst_timeout, request, request->timeout_handle);
request->bp->bio_resid = request->bp->bio_bcount - reply->donecount;
biofinish(request->bp, NULL, reply->status ? EIO : 0);
free(request, M_PSTRAID);
psc->iop->reg->oqueue = mfa;
psc->iop->outstanding--;
pst_start(psc);
}
int
pst_rw(struct pst_request *request)
{
struct i2o_bsa_rw_block_message *msg;
int sgl_flag;
msg = (struct i2o_bsa_rw_block_message *)
(request->psc->iop->ibase + request->mfa);
bzero(msg, sizeof(struct i2o_bsa_rw_block_message));
msg->version_offset = 0x81;
msg->message_flags = 0x0;
msg->message_size = sizeof(struct i2o_bsa_rw_block_message) >> 2;
msg->target_address = request->psc->lct->local_tid;
msg->initiator_address = I2O_TID_HOST;
switch (request->bp->bio_cmd) {
case BIO_READ:
msg->function = I2O_BSA_BLOCK_READ;
msg->control_flags = 0x0; /* 0x0c = read cache + readahead */
msg->fetch_ahead = 0x0; /* 8 Kb */
sgl_flag = 0;
break;
case BIO_WRITE:
msg->function = I2O_BSA_BLOCK_WRITE;
msg->control_flags = 0x0; /* 0x10 = write behind cache */
msg->fetch_ahead = 0x0;
sgl_flag = I2O_SGL_DIR;
break;
default:
printf("pst: unknown command type 0x%02x\n", request->bp->bio_cmd);
return -1;
}
msg->initiator_context = (u_int32_t)pst_done;
msg->transaction_context = (u_int32_t)request;
msg->time_multiplier = 1;
msg->bytecount = request->bp->bio_bcount;
msg->lba = ((u_int64_t)request->bp->bio_pblkno) * (DEV_BSIZE * 1LL);
if (!iop_create_sgl((struct i2o_basic_message *)msg, request->bp->bio_data,
request->bp->bio_bcount, sgl_flag))
return -1;
request->psc->iop->reg->iqueue = request->mfa;
if (dumping)
request->timeout_handle.callout = NULL;
else
request->timeout_handle =
timeout((timeout_t*)pst_timeout, request, 10 * hz);
return 0;
}
static void
pst_timeout(struct pst_request *request)
{
printf("pst: timeout mfa=0x%08x cmd=0x%02x\n",
request->mfa, request->bp->bio_cmd);
mtx_lock(&request->psc->iop->mtx);
iop_free_mfa(request->psc->iop, request->mfa);
if ((request->mfa = iop_get_mfa(request->psc->iop)) == 0xffffffff) {
printf("pst: timeout no mfa possible\n");
biofinish(request->bp, NULL, EIO);
request->psc->iop->outstanding--;
mtx_unlock(&request->psc->iop->mtx);
return;
}
if (pst_rw(request)) {
iop_free_mfa(request->psc->iop, request->mfa);
biofinish(request->bp, NULL, EIO);
request->psc->iop->outstanding--;
}
mtx_unlock(&request->psc->iop->mtx);
}
static void
bpack(int8_t *src, int8_t *dst, int len)
{
int i, j, blank;
int8_t *ptr, *buf = dst;
for (i = j = blank = 0 ; i < len; i++) {
if (blank && src[i] == ' ')
continue;
if (blank && src[i] != ' ') {
dst[j++] = src[i];
blank = 0;
continue;
}
if (src[i] == ' ') {
blank = 1;
if (i == 0)
continue;
}
dst[j++] = src[i];
}
if (j < len)
dst[j] = 0x00;
for (ptr = buf; ptr < buf+len; ++ptr)
if (!*ptr)
*ptr = ' ';
for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr)
*ptr = 0;
}
static device_method_t pst_methods[] = {
DEVMETHOD(device_probe, pst_probe),
DEVMETHOD(device_attach, pst_attach),
{ 0, 0 }
};
static driver_t pst_driver = {
"pst",
pst_methods,
sizeof(struct pst_softc),
};
static devclass_t pst_devclass;
DRIVER_MODULE(pst, pstpci, pst_driver, pst_devclass, 0, 0);