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freebsd/sys/dev/pst/pst-raid.c
Pedro F. Giffuni 718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00

376 lines
11 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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("$FreeBSD$");
#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 timeout; /* timeout timer */
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(void *);
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 device_probe_and_attach(child);
}
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;
}
callout_init_mtx(&request->timeout, &psc->iop->mtx, 0);
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;
callout_stop(&request->timeout);
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)
callout_reset(&request->timeout, 10 * hz, pst_timeout, request);
return 0;
}
static void
pst_timeout(void *arg)
{
struct pst_request *request;
request = arg;
printf("pst: timeout mfa=0x%08x cmd=0x%02x\n",
request->mfa, request->bp->bio_cmd);
mtx_assert(&request->psc->iop->mtx, MA_OWNED);
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--;
return;
}
if (pst_rw(request)) {
iop_free_mfa(request->psc->iop, request->mfa);
biofinish(request->bp, NULL, EIO);
request->psc->iop->outstanding--;
}
}
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);