freebsd-dev/sys/dev/aha/aha_isa.c

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/*
* Product specific probe and attach routines for:
* Adaptec 154x.
*
* Derived from code written by:
*
* Copyright (c) 1998 Justin T. Gibbs
* 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. 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 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.
*
1999-08-28 01:08:13 +00:00
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <isa/isavar.h>
#include <dev/aha/ahareg.h>
#include <cam/scsi/scsi_all.h>
static struct isa_pnp_id aha_ids[] = {
{AHA1542_PNP, NULL}, /* ADP1542 */
{AHA1542_PNPCOMPAT, NULL}, /* PNP00A0 */
{0}
};
/*
* Check if the device can be found at the port given
* and if so, set it up ready for further work
* as an argument, takes the isa_device structure from
* autoconf.c
*/
static int
aha_isa_probe(device_t dev)
{
/*
* find unit and check we have that many defined
*/
struct aha_softc **sc = device_get_softc(dev);
struct aha_softc *aha;
int port_index;
int max_port_index;
int error;
u_long port_start, port_count;
struct resource *port_res;
int port_rid;
int drq;
int irq;
aha = NULL;
/* Check isapnp ids */
if (ISA_PNP_PROBE(device_get_parent(dev), dev, aha_ids) == ENXIO)
return (ENXIO);
error = bus_get_resource(dev, SYS_RES_IOPORT, 0,
&port_start, &port_count);
if (error != 0)
port_start = 0;
/*
* Bound our board search if the user has
* specified an exact port.
*/
aha_find_probe_range(port_start, &port_index, &max_port_index);
if (port_index < 0)
return ENXIO;
/* Attempt to find an adapter */
for (;port_index <= max_port_index; port_index++) {
config_data_t config_data;
u_int ioport;
int error;
ioport = aha_iop_from_bio(port_index);
/*
* Ensure this port has not already been claimed already
* by another adapter.
*/
if (aha_check_probed_iop(ioport) != 0)
continue;
error = bus_set_resource(dev, SYS_RES_IOPORT, 0,
ioport, AHA_NREGS);
if (error)
return error;
port_rid = 0;
port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &port_rid,
0, ~0, AHA_NREGS, RF_ACTIVE);
if (!port_res)
continue;
/* Allocate a softc for use during probing */
aha = aha_alloc(device_get_unit(dev), rman_get_bustag(port_res),
rman_get_bushandle(port_res));
if (aha == NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, port_rid,
port_res);
break;
}
/* We're going to attempt to probe it now, so mark it probed */
aha_mark_probed_bio(port_index);
/* See if there is really a card present */
if (aha_probe(aha) || aha_fetch_adapter_info(aha)) {
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid,
port_res);
continue;
}
/*
* Determine our IRQ, and DMA settings and
* export them to the configuration system.
*/
error = aha_cmd(aha, AOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
(u_int8_t*)&config_data, sizeof(config_data),
DEFAULT_CMD_TIMEOUT);
if (error != 0) {
printf("aha_isa_probe: Could not determine IRQ or DMA "
"settings for adapter at 0x%x. Failing probe\n",
ioport);
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid,
port_res);
continue;
}
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
switch (config_data.dma_chan) {
case DMA_CHAN_5:
drq = 5;
break;
case DMA_CHAN_6:
drq = 6;
break;
case DMA_CHAN_7:
drq = 7;
break;
default:
printf("aha_isa_probe: Invalid DMA setting "
"detected for adapter at 0x%x. "
"Failing probe\n", ioport);
return (ENXIO);
}
error = bus_set_resource(dev, SYS_RES_DRQ, 0, drq, 1);
if (error)
return error;
irq = ffs(config_data.irq) + 8;
error = bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1);
if (error)
return error;
*sc = aha;
aha_unit++;
return (0);
}
return (ENXIO);
}
/*
* Attach all the sub-devices we can find
*/
static int
aha_isa_attach(device_t dev)
{
struct aha_softc **sc = device_get_softc(dev);
struct aha_softc *aha;
bus_dma_filter_t *filter;
void *filter_arg;
bus_addr_t lowaddr;
struct resource *port_res;
int port_rid;
struct resource *irq_res;
int irq_rid;
struct resource *drq_res;
int drq_rid;
void *ih;
int error;
port_rid = 0;
port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &port_rid,
0, ~0, AHA_NREGS, RF_ACTIVE);
if (!port_res) {
device_printf(dev, "Unable to allocate I/O ports\n");
return ENOMEM;
}
irq_rid = 0;
irq_res = bus_alloc_resource(dev, SYS_RES_IRQ, &irq_rid, 0, ~0, 1,
RF_ACTIVE);
if (!irq_res) {
device_printf(dev, "Unable to allocate excluse use of irq\n");
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
return ENOMEM;
}
drq_rid = 0;
drq_res = bus_alloc_resource(dev, SYS_RES_DRQ, &drq_rid, 0, ~0, 1,
RF_ACTIVE);
if (!drq_res) {
device_printf(dev, "Unable to allocate drq\n");
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
return ENOMEM;
}
aha = *sc;
#if 0 /* is the drq ever unset? */
if (dev->id_drq != -1)
isa_dmacascade(dev->id_drq);
#endif
isa_dmacascade(rman_get_start(drq_res));
/* Allocate our parent dmatag */
filter = NULL;
filter_arg = NULL;
lowaddr = BUS_SPACE_MAXADDR_24BIT;
if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
lowaddr, /*highaddr*/BUS_SPACE_MAXADDR,
filter, filter_arg,
/*maxsize*/BUS_SPACE_MAXSIZE_24BIT,
/*nsegments*/BUS_SPACE_UNRESTRICTED,
/*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT,
/*flags*/0, &aha->parent_dmat) != 0) {
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
bus_release_resource(dev, SYS_RES_DRQ, drq_rid, drq_res);
return (ENOMEM);
}
if (aha_init(aha)) {
device_printf(dev, "init failed\n");
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
bus_release_resource(dev, SYS_RES_DRQ, drq_rid, drq_res);
return (ENOMEM);
}
error = aha_attach(aha);
if (error) {
device_printf(dev, "attach failed\n");
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
bus_release_resource(dev, SYS_RES_DRQ, drq_rid, drq_res);
return (error);
}
error = bus_setup_intr(dev, irq_res, INTR_TYPE_CAM, aha_intr, aha,
&ih);
if (error) {
device_printf(dev, "Unable to register interrupt handler\n");
aha_free(aha);
bus_release_resource(dev, SYS_RES_IOPORT, port_rid, port_res);
bus_release_resource(dev, SYS_RES_IRQ, irq_rid, irq_res);
bus_release_resource(dev, SYS_RES_DRQ, drq_rid, drq_res);
return (error);
}
return (0);
}
static device_method_t aha_isa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, aha_isa_probe),
DEVMETHOD(device_attach, aha_isa_attach),
{ 0, 0 }
};
static driver_t aha_isa_driver = {
"aha",
aha_isa_methods,
sizeof(struct aha_softc*),
};
static devclass_t aha_devclass;
DRIVER_MODULE(aha, isa, aha_isa_driver, aha_devclass, 0, 0);