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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.
*
* $Id: aha_isa.c,v 1.4 1998/10/12 18:53:33 imp Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <i386/isa/isa_device.h>
#include <dev/aha/ahareg.h>
#include <cam/scsi/scsi_all.h>
static int aha_isa_probe __P((struct isa_device *dev));
static int aha_isa_attach __P((struct isa_device *dev));
static void aha_isa_intr __P((void *unit));
struct isa_driver ahadriver =
{
aha_isa_probe,
aha_isa_attach,
"aha"
};
/*
* 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(dev)
struct isa_device *dev;
{
/*
* find unit and check we have that many defined
*/
struct aha_softc *aha;
int port_index;
int max_port_index;
/*
* We ignore the unit number assigned by config to allow
* consistant numbering between PCI/EISA/ISA devices.
* This is a total kludge until we have a configuration
* manager.
*/
dev->id_unit = aha_unit;
aha = NULL;
/*
* Bound our board search if the user has
* specified an exact port.
*/
aha_find_probe_range(dev->id_iobase, &port_index, &max_port_index);
if (port_index < 0)
return 0;
/* 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 a PCI, EISA or ISA adapter.
*/
if (aha_check_probed_iop(ioport) != 0)
continue;
dev->id_iobase = ioport;
if (haveseen_isadev(dev, CC_IOADDR | CC_QUIET))
continue;
/* Allocate a softc for use during probing */
aha = aha_alloc(dev->id_unit, I386_BUS_SPACE_IO, ioport);
if (aha == NULL)
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);
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);
continue;
}
switch (config_data.dma_chan) {
case DMA_CHAN_5:
dev->id_drq = 5;
break;
case DMA_CHAN_6:
dev->id_drq = 6;
break;
case DMA_CHAN_7:
dev->id_drq = 7;
break;
default:
printf("aha_isa_probe: Invalid DMA setting "
"detected for adapter at 0x%x. "
"Failing probe\n", ioport);
return (0);
}
dev->id_irq = (config_data.irq << 9);
dev->id_intr = aha_isa_intr;
aha_unit++;
return (AHA_NREGS);
}
return (0);
}
/*
* Attach all the sub-devices we can find
*/
static int
aha_isa_attach(dev)
struct isa_device *dev;
{
struct aha_softc *aha;
bus_dma_filter_t *filter;
void *filter_arg;
bus_addr_t lowaddr;
aha = aha_softcs[dev->id_unit];
if (dev->id_drq != -1)
isa_dmacascade(dev->id_drq);
/* Allocate our parent dmatag */
filter = NULL;
filter_arg = NULL;
lowaddr = BUS_SPACE_MAXADDR_24BIT;
if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/0, /*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);
return (-1);
}
if (aha_init(aha)) {
printf("aha init failed\n");
aha_free(aha);
return (-1);
}
return (aha_attach(aha));
}
/*
* Handle an ISA interrupt.
* XXX should go away as soon as ISA interrupt handlers
* take a (void *) arg.
*/
static void
aha_isa_intr(void *unit)
{
struct aha_softc* arg = aha_softcs[(int)unit];
aha_intr((void *)arg);
}
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