freebsd-dev/sys/dev/stg/tmc18c30_isa.c
Mark Murray ed34d0ade2 Turn on interrupt-entropy harvesting for all/any mass storage devices
I could find. I have no doubt missed a couple.

Interrupt entropy harvesting is still conditional on the
kern.random.sys.harvest_interrupt sysctl.
2001-03-01 17:09:09 +00:00

297 lines
6.6 KiB
C

/* $FreeBSD$ */
/* $NecBSD: tmc18c30_pisa.c,v 1.22 1998/11/26 01:59:21 honda Exp $ */
/* $NetBSD$ */
/*
* [Ported for FreeBSD]
* Copyright (c) 2000
* Noriaki Mitsunaga, Mitsuru Iwasaki and Takanori Watanabe.
* All rights reserved.
* [NetBSD for NEC PC-98 series]
* Copyright (c) 1996, 1997, 1998
* NetBSD/pc98 porting staff. All rights reserved.
* Copyright (c) 1996, 1997, 1998
* Naofumi HONDA. All rights reserved.
* Copyright (c) 1996, 1997, 1998
* Kouichi Matsuda. 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. 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/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/disklabel.h>
#if defined(__FreeBSD__) && __FreeBSD_version >= 500001
#include <sys/bio.h>
#endif
#include <sys/buf.h>
#include <sys/queue.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <vm/vm.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include <machine/dvcfg.h>
#include <sys/device_port.h>
#include <cam/scsi/scsi_low.h>
#include <isa/isa_common.h>
#include <cam/scsi/scsi_low_pisa.h>
#include <dev/stg/tmc18c30reg.h>
#include <dev/stg/tmc18c30var.h>
#define STG_HOSTID 7
#include <sys/kernel.h>
#include <sys/module.h>
static int stgprobe(device_t devi);
static int stgattach(device_t devi);
static void stg_isa_unload __P((device_t));
static void
stg_isa_intr(void * arg)
{
stgintr(arg);
}
static void
stg_release_resource(device_t dev)
{
struct stg_softc *sc = device_get_softc(dev);
if (sc->stg_intrhand) {
bus_teardown_intr(dev, sc->irq_res, sc->stg_intrhand);
}
if (sc->port_res) {
bus_release_resource(dev, SYS_RES_IOPORT,
sc->port_rid, sc->port_res);
}
if (sc->irq_res) {
bus_release_resource(dev, SYS_RES_IRQ,
sc->irq_rid, sc->irq_res);
}
if (sc->mem_res) {
bus_release_resource(dev, SYS_RES_MEMORY,
sc->mem_rid, sc->mem_res);
}
}
static int
stg_alloc_resource(device_t dev)
{
struct stg_softc *sc = device_get_softc(dev);
u_long maddr, msize;
int error;
sc->port_rid = 0;
sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->port_rid,
0, ~0, STGIOSZ, RF_ACTIVE);
if (sc->port_res == NULL) {
stg_release_resource(dev);
return(ENOMEM);
}
sc->irq_rid = 0;
sc->irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irq_rid,
0, ~0, 1, RF_ACTIVE);
if (sc->irq_res == NULL) {
stg_release_resource(dev);
return(ENOMEM);
}
error = bus_get_resource(dev, SYS_RES_MEMORY, 0, &maddr, &msize);
if (error) {
return(0); /* XXX */
}
/* no need to allocate memory if not configured */
if (maddr == 0 || msize == 0) {
return(0);
}
sc->mem_rid = 0;
sc->mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->mem_rid,
0, ~0, msize, RF_ACTIVE);
if (sc->mem_res == NULL) {
stg_release_resource(dev);
return(ENOMEM);
}
return(0);
}
static int
stg_isa_probe(device_t dev)
{
struct stg_softc *sc = device_get_softc(dev);
int error;
bzero(sc, sizeof(struct stg_softc));
error = stg_alloc_resource(dev);
if (error) {
return(error);
}
if (stgprobe(dev) == 0) {
stg_release_resource(dev);
return(ENXIO);
}
stg_release_resource(dev);
return(0);
}
static int
stg_isa_attach(device_t dev)
{
struct stg_softc *sc = device_get_softc(dev);
int error;
error = stg_alloc_resource(dev);
if (error) {
return(error);
}
error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_CAM | INTR_ENTROPY,
stg_isa_intr, (void *)sc, &sc->stg_intrhand);
if (error) {
stg_release_resource(dev);
return(error);
}
if (stgattach(dev) == 0) {
stg_release_resource(dev);
return(ENXIO);
}
return(0);
}
static void
stg_isa_detach(device_t dev)
{
stg_isa_unload(dev);
stg_release_resource(dev);
}
static device_method_t stg_isa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, stg_isa_probe),
DEVMETHOD(device_attach, stg_isa_attach),
DEVMETHOD(device_detach, stg_isa_detach),
{ 0, 0 }
};
static driver_t stg_isa_driver = {
"stg",
stg_isa_methods,
sizeof(struct stg_softc),
};
static devclass_t stg_devclass;
DRIVER_MODULE(stg, isa, stg_isa_driver, stg_devclass, 0, 0);
static void
stg_isa_unload(device_t devi)
{
struct stg_softc *sc = device_get_softc(devi);
printf("%s: unload\n",sc->sc_sclow.sl_xname);
scsi_low_deactivate((struct scsi_low_softc *)sc);
scsi_low_dettach(&sc->sc_sclow);
}
static int
stgprobe(device_t devi)
{
int rv;
struct stg_softc *sc = device_get_softc(devi);
rv = stgprobesubr(rman_get_bustag(sc->port_res),
rman_get_bushandle(sc->port_res),
device_get_flags(devi));
return rv;
}
static int
stgattach(device_t devi)
{
struct stg_softc *sc;
struct scsi_low_softc *slp;
u_int32_t flags = device_get_flags(devi);
u_int iobase = bus_get_resource_start(devi, SYS_RES_IOPORT, 0);
char dvname[16];
strcpy(dvname,"stg");
if (iobase == 0)
{
printf("%s: no ioaddr is given\n", dvname);
return (0);
}
sc = device_get_softc(devi);
if (sc == NULL) {
return(0);
}
slp = &sc->sc_sclow;
slp->sl_dev = devi;
sc->sc_iot = rman_get_bustag(sc->port_res);
sc->sc_ioh = rman_get_bushandle(sc->port_res);
slp->sl_hostid = STG_HOSTID;
slp->sl_cfgflags = flags;
stgattachsubr(sc);
sc->sc_ih = stgintr;
return(STGIOSZ);
}