228 lines
6.1 KiB
C
228 lines
6.1 KiB
C
/*
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* Product specific probe and attach routines for:
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* Adaptec 154x.
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*
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* Derived from code written by:
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*
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* Copyright (c) 1998 Justin T. Gibbs
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: aha_isa.c,v 1.1 1998/09/15 07:39:55 gibbs Exp $
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <i386/isa/isa_device.h>
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#include <dev/aha/ahareg.h>
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#include <cam/scsi/scsi_all.h>
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static int aha_isa_probe __P((struct isa_device *dev));
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static int aha_isa_attach __P((struct isa_device *dev));
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static void aha_isa_intr __P((void *unit));
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struct isa_driver ahadriver =
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{
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aha_isa_probe,
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aha_isa_attach,
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"aha"
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};
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/*
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* Check if the device can be found at the port given
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* and if so, set it up ready for further work
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* as an argument, takes the isa_device structure from
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* autoconf.c
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*/
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static int
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aha_isa_probe(dev)
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struct isa_device *dev;
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{
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/*
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* find unit and check we have that many defined
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*/
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struct aha_softc *aha;
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int port_index;
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int max_port_index;
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/*
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* We ignore the unit number assigned by config to allow
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* consistant numbering between PCI/EISA/ISA devices.
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* This is a total kludge until we have a configuration
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* manager.
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*/
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dev->id_unit = aha_unit;
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aha = NULL;
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port_index = 0;
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max_port_index = AHA_NUM_ISAPORTS - 1;
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/*
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* Bound our board search if the user has
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* specified an exact port.
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*/
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if (dev->id_iobase > 0) {
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for (;port_index <= max_port_index; port_index++)
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if (dev->id_iobase >= aha_isa_ports[port_index].addr)
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break;
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if ((port_index > max_port_index)
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|| (dev->id_iobase != aha_isa_ports[port_index].addr)) {
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printf("
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aha_isa_probe: Invalid baseport of 0x%x specified.
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aha_isa_probe: Nearest valid baseport is 0x%x.
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aha_isa_probe: Failing probe.\n",
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dev->id_iobase,
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(port_index <= max_port_index)
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? aha_isa_ports[port_index].addr
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: aha_isa_ports[max_port_index].addr);
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return 0;
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}
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}
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/* Attempt to find an adapter */
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for (;port_index <= max_port_index; port_index++) {
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config_data_t config_data;
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u_int ioport;
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int error;
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ioport = aha_isa_ports[port_index].addr;
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/*
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* Ensure this port has not already been claimed already
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* by a PCI or EISA adapter.
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*/
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if (aha_check_probed_iop(ioport) != 0)
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continue;
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/* Allocate a softc for use during probing */
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aha = aha_alloc(dev->id_unit, I386_BUS_SPACE_IO, ioport);
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if (aha == NULL)
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break;
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/* We're going to attempt to probe it now, so mark it probed */
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aha_mark_probed_bio(port_index);
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/* See if there is really a card present */
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if (aha_probe(aha) || aha_fetch_adapter_info(aha)) {
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aha_free(aha);
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continue;
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}
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/*
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* Determine our IRQ, and DMA settings and
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* export them to the configuration system.
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*/
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error = aha_cmd(aha, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
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(u_int8_t*)&config_data, sizeof(config_data),
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DEFAULT_CMD_TIMEOUT);
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if (error != 0) {
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printf("aha_isa_probe: Could not determine IRQ or DMA "
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"settings for adapter at 0x%x. Failing probe\n",
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ioport);
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aha_free(aha);
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continue;
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}
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switch (config_data.dma_chan) {
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case DMA_CHAN_5:
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dev->id_drq = 5;
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break;
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case DMA_CHAN_6:
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dev->id_drq = 6;
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break;
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case DMA_CHAN_7:
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dev->id_drq = 7;
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break;
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default:
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printf("aha_isa_probe: Invalid DMA setting "
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"detected for adapter at 0x%x. "
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"Failing probe\n", ioport);
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}
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dev->id_iobase = aha_isa_ports[port_index].addr;
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dev->id_irq = (config_data.irq << 9);
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dev->id_intr = aha_isa_intr;
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aha_unit++;
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return (AHA_NREGS);
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}
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return (0);
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}
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/*
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* Attach all the sub-devices we can find
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*/
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static int
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aha_isa_attach(dev)
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struct isa_device *dev;
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{
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struct aha_softc *aha;
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bus_dma_filter_t *filter;
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void *filter_arg;
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bus_addr_t lowaddr;
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aha = aha_softcs[dev->id_unit];
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if (dev->id_drq != -1)
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isa_dmacascade(dev->id_drq);
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/* Allocate our parent dmatag */
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filter = NULL;
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filter_arg = NULL;
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lowaddr = BUS_SPACE_MAXADDR_24BIT;
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if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/0, /*boundary*/0,
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lowaddr, /*highaddr*/BUS_SPACE_MAXADDR,
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filter, filter_arg,
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/*maxsize*/BUS_SPACE_MAXSIZE_24BIT,
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/*nsegments*/BUS_SPACE_UNRESTRICTED,
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/*maxsegsz*/BUS_SPACE_MAXSIZE_24BIT,
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/*flags*/0, &aha->parent_dmat) != 0) {
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aha_free(aha);
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return (-1);
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}
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if (aha_init(aha)) {
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printf("aha init failed\n");
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aha_free(aha);
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return (-1);
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}
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return (aha_attach(aha));
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}
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/*
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* Handle an ISA interrupt.
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* XXX should go away as soon as ISA interrupt handlers
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* take a (void *) arg.
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*/
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static void
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aha_isa_intr(void *unit)
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{
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struct aha_softc* arg = aha_softcs[(int)unit];
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aha_intr((void *)arg);
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}
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