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NetBSD/sys/dev/ic/ld_icp.c

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/* $NetBSD: ld_icp.c,v 1.3 2002/09/27 20:38:06 thorpej 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.
*/
/*
* ICP-Vortex "GDT" front-end for ld(4) driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ld_icp.c,v 1.3 2002/09/27 20:38:06 thorpej Exp $");
#include "rnd.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/endian.h>
#include <sys/dkio.h>
#include <sys/disk.h>
#if NRND > 0
#include <sys/rnd.h>
#endif
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <dev/ldvar.h>
#include <dev/ic/icpreg.h>
#include <dev/ic/icpvar.h>
struct ld_icp_softc {
struct ld_softc sc_ld;
int sc_hwunit;
};
void ld_icp_attach(struct device *, struct device *, void *);
int ld_icp_dobio(struct ld_icp_softc *, void *, int, int, int,
struct buf *);
int ld_icp_dump(struct ld_softc *, void *, int, int);
int ld_icp_flush(struct ld_softc *);
void ld_icp_intr(struct icp_ccb *);
int ld_icp_match(struct device *, struct cfdata *, void *);
int ld_icp_start(struct ld_softc *, struct buf *);
const struct cfattach ld_icp_ca = {
sizeof(struct ld_icp_softc), ld_icp_match, ld_icp_attach,
};
int
ld_icp_match(struct device *parent, struct cfdata *match, void *aux)
{
struct icp_attach_args *icpa;
icpa = aux;
return (icpa->icpa_unit < ICPA_UNIT_SCSI);
}
void
ld_icp_attach(struct device *parent, struct device *self, void *aux)
{
struct icp_attach_args *icpa;
struct ld_icp_softc *sc;
struct ld_softc *ld;
struct icp_softc *icp;
struct icp_cachedrv *cd;
struct icp_cdevinfo *cdi;
const char *str;
int t;
sc = (struct ld_icp_softc *)self;
ld = &sc->sc_ld;
icp = (struct icp_softc *)parent;
icpa = aux;
cd = &icp->icp_cdr[icpa->icpa_unit];
sc->sc_hwunit = icpa->icpa_unit;
ld->sc_maxxfer = ICP_MAX_XFER;
ld->sc_secsize = ICP_SECTOR_SIZE;
ld->sc_start = ld_icp_start;
ld->sc_dump = ld_icp_dump;
ld->sc_flush = ld_icp_flush;
ld->sc_secperunit = cd->cd_size;
ld->sc_flags = LDF_ENABLED;
ld->sc_maxqueuecnt = icp->icp_openings;
if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, ICP_CACHE_DRV_INFO,
sc->sc_hwunit, sizeof(struct icp_cdevinfo))) {
printf(": unable to retrieve device info\n");
ld->sc_flags = LDF_ENABLED;
goto out;
}
cdi = (struct icp_cdevinfo *)icp->icp_scr;
printf(": <%.8s>, ", cdi->ld_name);
t = le32toh(cdi->ld_dtype) >> 16;
/*
* Print device type.
*/
if (le32toh(cdi->ld_dcnt) > 1 || le32toh(cdi->ld_slave) != -1)
str = "RAID-1";
else if (t == 0)
str = "JBOD";
else if (t == 1)
str = "RAID-0";
else if (t == 2)
str = "Chain";
else
str = "unknown type";
printf("type: %s, ", str);
/*
* Print device status.
*/
if (t > 2)
str = "missing";
else if ((cdi->ld_error & 1) != 0) {
str = "fault";
ld->sc_flags = LDF_ENABLED;
} else if ((cdi->ld_error & 2) != 0)
str = "invalid";
else {
str = "optimal";
ld->sc_flags = LDF_ENABLED;
}
printf("status: %s\n", str);
out:
ldattach(ld);
}
int
ld_icp_dobio(struct ld_icp_softc *sc, void *data, int datasize, int blkno,
int dowrite, struct buf *bp)
{
struct icp_cachecmd *cc;
struct icp_ccb *ic;
struct icp_softc *icp;
int s, rv;
icp = (struct icp_softc *)sc->sc_ld.sc_dv.dv_parent;
/*
* Allocate a command control block.
*/
ic = icp_ccb_alloc(icp);
/*
* Map the data transfer.
*/
cc = &ic->ic_cmd.cmd_packet.cc;
ic->ic_sg = cc->cc_sg;
ic->ic_service = ICP_CACHESERVICE;
rv = icp_ccb_map(icp, ic, data, datasize,
dowrite ? IC_XFER_OUT : IC_XFER_IN);
if (rv != 0) {
icp_ccb_free(icp, ic);
return (rv);
}
/*
* Build the command.
*/
ic->ic_cmd.cmd_opcode = htole16((dowrite ? ICP_WRITE : ICP_READ));
cc->cc_deviceno = htole16(sc->sc_hwunit);
cc->cc_blockno = htole32(blkno);
cc->cc_blockcnt = htole32(datasize / ICP_SECTOR_SIZE);
cc->cc_addr = ~0; /* scatter gather */
cc->cc_nsgent = htole32(ic->ic_nsgent);
ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd +
ic->ic_nsgent * sizeof(*ic->ic_sg);
/*
* Fire it off to the controller.
*/
if (bp == NULL) {
s = splbio();
rv = icp_ccb_poll(icp, ic, 10000);
icp_ccb_unmap(icp, ic);
icp_ccb_free(icp, ic);
splx(s);
} else {
ic->ic_intr = ld_icp_intr;
ic->ic_context = bp;
ic->ic_dv = &sc->sc_ld.sc_dv;
icp_ccb_enqueue(icp, ic);
}
return (rv);
}
int
ld_icp_start(struct ld_softc *ld, struct buf *bp)
{
return (ld_icp_dobio((struct ld_icp_softc *)ld, bp->b_data,
bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
}
int
ld_icp_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
{
return (ld_icp_dobio((struct ld_icp_softc *)ld, data,
blkcnt * ld->sc_secsize, blkno, 1, NULL));
}
int
ld_icp_flush(struct ld_softc *ld)
{
struct ld_icp_softc *sc;
struct icp_softc *icp;
struct icp_cachecmd *cc;
struct icp_ccb *ic;
int rv;
sc = (struct ld_icp_softc *)ld;
icp = (struct icp_softc *)ld->sc_dv.dv_parent;
ic = icp_ccb_alloc(icp);
ic->ic_cmd.cmd_opcode = htole16(ICP_FLUSH);
cc = &ic->ic_cmd.cmd_packet.cc;
cc->cc_deviceno = htole16(sc->sc_hwunit);
cc->cc_blockno = htole32(1);
cc->cc_blockcnt = 0;
cc->cc_addr = 0;
cc->cc_nsgent = 0;
ic->ic_cmdlen = (u_long)&cc->cc_sg - (u_long)&ic->ic_cmd;
ic->ic_service = ICP_CACHESERVICE;
rv = icp_ccb_wait(icp, ic, 30000);
icp_ccb_free(icp, ic);
return (rv);
}
void
ld_icp_intr(struct icp_ccb *ic)
{
struct buf *bp;
struct ld_icp_softc *sc;
struct icp_softc *icp;
bp = ic->ic_context;
sc = (struct ld_icp_softc *)ic->ic_dv;
icp = (struct icp_softc *)sc->sc_ld.sc_dv.dv_parent;
if (ic->ic_status != ICP_S_OK) {
printf("%s: request failed; status=0x%04x\n",
ic->ic_dv->dv_xname, ic->ic_status);
bp->b_flags |= B_ERROR;
bp->b_error = EIO;
bp->b_resid = bp->b_bcount;
} else
bp->b_resid = 0;
icp_ccb_unmap(icp, ic);
icp_ccb_free(icp, ic);
lddone(&sc->sc_ld, bp);
}
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