freebsd-dev/sys/dev/dpt/dpt_eisa.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

226 lines
5.8 KiB
C

/*-
* Copyright (c) 1997, 2000 Matthew N. Dodd <winter@jurai.net>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/eisa/eisaconf.h>
#include <cam/scsi/scsi_all.h>
#include <dev/dpt/dpt.h>
#define DPT_EISA_IOSIZE 0x100
#define DPT_EISA_SLOT_OFFSET 0x0c00
#define DPT_EISA_EATA_REG_OFFSET 0x0088
#define DPT_EISA_DPT2402 0x12142402 /* DPT PM2012A/9X */
#define DPT_EISA_DPTA401 0x1214A401 /* DPT PM2012B/9X */
#define DPT_EISA_DPTA402 0x1214A402 /* DPT PM2012B2/9X */
#define DPT_EISA_DPTA410 0x1214A410 /* DPT PM2x22A/9X */
#define DPT_EISA_DPTA411 0x1214A411 /* DPT Spectre */
#define DPT_EISA_DPTA412 0x1214A412 /* DPT PM2021A/9X */
#define DPT_EISA_DPTA420 0x1214A420 /* DPT Smart Cache IV (PM2042) */
#define DPT_EISA_DPTA501 0x1214A501 /* DPT PM2012B1/9X" */
#define DPT_EISA_DPTA502 0x1214A502 /* DPT PM2012Bx/9X */
#define DPT_EISA_DPTA701 0x1214A701 /* DPT PM2011B1/9X */
#define DPT_EISA_DPTBC01 0x1214BC01 /* DPT PM3011/7X ESDI */
#define DPT_EISA_DPT8200 0x12148200 /* NEC EATA SCSI */
#define DPT_EISA_DPT2408 0x12142408 /* ATT EATA SCSI */
/* Function Prototypes */
static const char * dpt_eisa_match (eisa_id_t);
static int dpt_eisa_probe (device_t);
static int dpt_eisa_attach (device_t);
static int
dpt_eisa_probe (device_t dev)
{
const char * desc;
u_int32_t io_base;
dpt_conf_t * conf;
desc = dpt_eisa_match(eisa_get_id(dev));
if (!desc)
return (ENXIO);
device_set_desc(dev, desc);
io_base = (eisa_get_slot(dev) * EISA_SLOT_SIZE) + DPT_EISA_SLOT_OFFSET;
conf = dpt_pio_get_conf(io_base + DPT_EISA_EATA_REG_OFFSET);
if (!conf) {
printf("dpt: dpt_pio_get_conf() failed.\n");
return (ENXIO);
}
eisa_add_iospace(dev, io_base, DPT_EISA_IOSIZE, RESVADDR_NONE);
eisa_add_intr(dev, conf->IRQ,
(conf->IRQ_TR ? EISA_TRIGGER_LEVEL : EISA_TRIGGER_EDGE));
return 0;
}
static int
dpt_eisa_attach (device_t dev)
{
dpt_softc_t * dpt;
struct resource *io = 0;
struct resource *irq = 0;
int s;
int rid;
void * ih;
int error = 0;
rid = 0;
io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE);
if (!io) {
device_printf(dev, "No I/O space?!\n");
error = ENOMEM;
goto bad;
}
rid = 0;
irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, RF_ACTIVE);
if (!irq) {
device_printf(dev, "No irq?!\n");
error = ENOMEM;
goto bad;
}
dpt = dpt_alloc(dev, rman_get_bustag(io),
rman_get_bushandle(io) + DPT_EISA_EATA_REG_OFFSET);
if (dpt == NULL) {
error = ENOMEM;
goto bad;
}
/* Allocate a dmatag representing the capabilities of this attachment */
/* XXX Should be a child of the EISA bus dma tag */
if (bus_dma_tag_create( /* parent */ NULL,
/* alignemnt */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
/* nsegments */ BUS_SPACE_UNRESTRICTED,
/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
/* flags */0,
&dpt->parent_dmat) != 0) {
dpt_free(dpt);
error = ENXIO;
goto bad;
}
s = splcam();
if (dpt_init(dpt) != 0) {
dpt_free(dpt);
error = ENXIO;
goto bad;
}
/* Register with the XPT */
dpt_attach(dpt);
splx(s);
if (bus_setup_intr(dev, irq, INTR_TYPE_CAM | INTR_ENTROPY, dpt_intr,
dpt, &ih)) {
device_printf(dev, "Unable to register interrupt handler\n");
error = ENXIO;
goto bad;
}
return (error);
bad:
if (io)
bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
if (irq)
bus_release_resource(dev, SYS_RES_IRQ, 0, irq);
return (error);
}
static const char *
dpt_eisa_match(type)
eisa_id_t type;
{
switch (type) {
case DPT_EISA_DPT2402:
case DPT_EISA_DPTA401:
case DPT_EISA_DPTA402:
case DPT_EISA_DPTA410:
case DPT_EISA_DPTA411:
case DPT_EISA_DPTA412:
case DPT_EISA_DPTA420:
case DPT_EISA_DPTA501:
case DPT_EISA_DPTA502:
case DPT_EISA_DPTA701:
case DPT_EISA_DPTBC01:
case DPT_EISA_DPT8200:
case DPT_EISA_DPT2408:
return ("DPT SCSI Host Bus Adapter");
break;
default:
break;
}
return (NULL);
}
static device_method_t dpt_eisa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, dpt_eisa_probe),
DEVMETHOD(device_attach, dpt_eisa_attach),
{ 0, 0 }
};
static driver_t dpt_eisa_driver = {
"dpt",
dpt_eisa_methods,
sizeof(dpt_softc_t),
};
static devclass_t dpt_devclass;
DRIVER_MODULE(dpt, eisa, dpt_eisa_driver, dpt_devclass, 0, 0);