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268 lines
5.8 KiB
C
268 lines
5.8 KiB
C
/*-
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* Copyright (c) 2000 Matthew N. Dodd <winter@jurai.net>
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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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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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
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* FOR 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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* $FreeBSD$
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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 <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <isa/isavar.h>
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#include <cam/scsi/scsi_all.h>
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#include <dev/dpt/dpt.h>
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#ifdef notyet
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static void dpt_isa_identify (driver_t *, device_t);
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#endif
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static int dpt_isa_probe (device_t);
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static int dpt_isa_attach (device_t);
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static int dpt_isa_detach (device_t);
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static int dpt_isa_valid_irq (int);
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static int dpt_isa_valid_ioport (int);
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static int
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dpt_isa_valid_irq (int irq)
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{
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switch (irq) {
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case 11:
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case 12:
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case 14:
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case 15:
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return (0);
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default:
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return (1);
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};
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return (1);
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}
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static int
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dpt_isa_valid_ioport (int ioport)
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{
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switch (ioport) {
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case 0x170:
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case 0x1f0:
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case 0x230:
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case 0x330:
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return (0);
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default:
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return (1);
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};
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return (1);
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}
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#ifdef notyet
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static void
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dpt_isa_identify (driver_t *driver, device_t parent)
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{
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device_t child;
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dpt_conf_t * conf;
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int isa_bases[] = { 0x1f0, 0x170, 0x330, 0x230, 0 };
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int i;
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for (i = 0; isa_bases[i]; i++) {
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conf = dpt_pio_get_conf(isa_bases[i]);
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if (!conf) {
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if (bootverbose)
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device_printf(parent, "dpt: dpt_pio_get_conf(%x) failed.\n",
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isa_bases[i]);
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continue;
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}
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child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "dpt", -1);
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if (child == 0) {
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device_printf(parent, "dpt: BUS_ADD_CHILD() failed!\n");
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continue;
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}
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device_set_driver(child, driver);
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bus_set_resource(child, SYS_RES_IOPORT, 0, isa_bases[i], 0x9);
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}
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return;
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}
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#endif
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static int
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dpt_isa_probe (device_t dev)
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{
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dpt_conf_t * conf;
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u_int32_t io_base;
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/* No pnp support */
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if (isa_get_vendorid(dev))
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return (ENXIO);
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if ((io_base = bus_get_resource_start(dev, SYS_RES_IOPORT, 0)) == 0)
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return (ENXIO);
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if (dpt_isa_valid_ioport(io_base))
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;
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conf = dpt_pio_get_conf(io_base);
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if (!conf) {
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printf("dpt: dpt_pio_get_conf() failed.\n");
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return (ENXIO);
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}
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if (dpt_isa_valid_irq(conf->IRQ))
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;
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device_set_desc(dev, "ISA DPT SCSI controller");
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bus_set_resource(dev, SYS_RES_IRQ, 0, conf->IRQ, 1);
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bus_set_resource(dev, SYS_RES_DRQ, 0, ((8 - conf->DMA_channel) & 7), 1);
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return 0;
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}
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static int
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dpt_isa_attach (device_t dev)
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{
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dpt_softc_t * dpt;
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int s;
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int error = 0;
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dpt = device_get_softc(dev);
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dpt->io_rid = 0;
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dpt->io_type = SYS_RES_IOPORT;
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dpt->irq_rid = 0;
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error = dpt_alloc_resources(dev);
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if (error) {
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goto bad;
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}
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dpt->drq_rid = 0;
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dpt->drq_res = bus_alloc_resource(dev, SYS_RES_DRQ, &dpt->drq_rid,
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0, ~0, 1, RF_ACTIVE);
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if (!dpt->drq_res) {
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device_printf(dev, "No DRQ!\n");
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error = ENOMEM;
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goto bad;
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}
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isa_dma_acquire(rman_get_start(dpt->drq_res));
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isa_dmacascade(rman_get_start(dpt->drq_res));
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dpt_alloc(dev);
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/* Allocate a dmatag representing the capabilities of this attachment */
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if (bus_dma_tag_create( /* parent */ NULL,
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/* alignemnt */ 1,
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/* boundary */ 0,
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/* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
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/* highaddr */ BUS_SPACE_MAXADDR,
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/* filter */ NULL,
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/* filterarg */ NULL,
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/* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
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/* nsegments */ ~0,
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/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
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/* flags */ 0,
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&dpt->parent_dmat) != 0) {
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error = ENXIO;
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goto bad;
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}
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s = splcam();
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if (dpt_init(dpt) != 0) {
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splx(s);
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error = ENXIO;
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goto bad;
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}
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/* Register with the XPT */
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dpt_attach(dpt);
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splx(s);
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if (bus_setup_intr(dev, dpt->irq_res, INTR_TYPE_CAM | INTR_ENTROPY,
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dpt_intr, dpt, &dpt->ih)) {
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device_printf(dev, "Unable to register interrupt handler\n");
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error = ENXIO;
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goto bad;
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}
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return (error);
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bad:
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if (dpt->drq_res) {
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isa_dma_release(rman_get_start(dpt->drq_res));
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}
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dpt_release_resources(dev);
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if (dpt)
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dpt_free(dpt);
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return (error);
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}
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static int
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dpt_isa_detach (device_t dev)
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{
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dpt_softc_t * dpt;
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int dma;
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int error;
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dpt = device_get_softc(dev);
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dma = rman_get_start(dpt->drq_res);
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error = dpt_detach(dev);
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isa_dma_release(dma);
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return (error);
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}
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static device_method_t dpt_isa_methods[] = {
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/* Device interface */
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#ifdef notyet
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DEVMETHOD(device_identify, dpt_isa_identify),
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#endif
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DEVMETHOD(device_probe, dpt_isa_probe),
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DEVMETHOD(device_attach, dpt_isa_attach),
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DEVMETHOD(device_detach, dpt_isa_detach),
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{ 0, 0 }
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};
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static driver_t dpt_isa_driver = {
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"dpt",
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dpt_isa_methods,
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sizeof(dpt_softc_t),
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};
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DRIVER_MODULE(dpt, isa, dpt_isa_driver, dpt_devclass, 0, 0);
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