diff options
Diffstat (limited to 'sys/dev/dpt/dpt_isa.c')
| -rw-r--r-- | sys/dev/dpt/dpt_isa.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/sys/dev/dpt/dpt_isa.c b/sys/dev/dpt/dpt_isa.c new file mode 100644 index 0000000..708bb69 --- /dev/null +++ b/sys/dev/dpt/dpt_isa.c @@ -0,0 +1,267 @@ +/*- + * Copyright (c) 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 <isa/isavar.h> + +#include <cam/scsi/scsi_all.h> + +#include <dev/dpt/dpt.h> + +#ifdef notyet +static void dpt_isa_identify (driver_t *, device_t); +#endif +static int dpt_isa_probe (device_t); +static int dpt_isa_attach (device_t); +static int dpt_isa_detach (device_t); + +static int dpt_isa_valid_irq (int); +static int dpt_isa_valid_ioport (int); + +static int +dpt_isa_valid_irq (int irq) +{ + switch (irq) { + case 11: + case 12: + case 14: + case 15: + return (0); + default: + return (1); + }; + return (1); +} + +static int +dpt_isa_valid_ioport (int ioport) +{ + switch (ioport) { + case 0x170: + case 0x1f0: + case 0x230: + case 0x330: + return (0); + default: + return (1); + }; + return (1); +} + +#ifdef notyet +static void +dpt_isa_identify (driver_t *driver, device_t parent) +{ + device_t child; + dpt_conf_t * conf; + int isa_bases[] = { 0x1f0, 0x170, 0x330, 0x230, 0 }; + int i; + + for (i = 0; isa_bases[i]; i++) { + conf = dpt_pio_get_conf(isa_bases[i]); + if (!conf) { + if (bootverbose) + device_printf(parent, "dpt: dpt_pio_get_conf(%x) failed.\n", + isa_bases[i]); + continue; + } + + child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "dpt", -1); + if (child == 0) { + device_printf(parent, "dpt: BUS_ADD_CHILD() failed!\n"); + continue; + } + device_set_driver(child, driver); + bus_set_resource(child, SYS_RES_IOPORT, 0, isa_bases[i], 0x9); + } + return; +} +#endif + +static int +dpt_isa_probe (device_t dev) +{ + dpt_conf_t * conf; + u_int32_t io_base; + + /* No pnp support */ + if (isa_get_vendorid(dev)) + return (ENXIO); + + if ((io_base = bus_get_resource_start(dev, SYS_RES_IOPORT, 0)) == 0) + return (ENXIO); + + if (dpt_isa_valid_ioport(io_base)) + ; + + conf = dpt_pio_get_conf(io_base); + if (!conf) { + printf("dpt: dpt_pio_get_conf() failed.\n"); + return (ENXIO); + } + + if (dpt_isa_valid_irq(conf->IRQ)) + ; + + device_set_desc(dev, "ISA DPT SCSI controller"); + bus_set_resource(dev, SYS_RES_IRQ, 0, conf->IRQ, 1); + bus_set_resource(dev, SYS_RES_DRQ, 0, ((8 - conf->DMA_channel) & 7), 1); + + return 0; +} + +static int +dpt_isa_attach (device_t dev) +{ + dpt_softc_t * dpt; + int s; + int error = 0; + + dpt = device_get_softc(dev); + + + dpt->io_rid = 0; + dpt->io_type = SYS_RES_IOPORT; + dpt->irq_rid = 0; + + error = dpt_alloc_resources(dev); + if (error) { + goto bad; + } + + dpt->drq_rid = 0; + dpt->drq_res = bus_alloc_resource(dev, SYS_RES_DRQ, &dpt->drq_rid, + 0, ~0, 1, RF_ACTIVE); + if (!dpt->drq_res) { + device_printf(dev, "No DRQ!\n"); + error = ENOMEM; + goto bad; + } + isa_dma_acquire(rman_get_start(dpt->drq_res)); + isa_dmacascade(rman_get_start(dpt->drq_res)); + + dpt_alloc(dev); + + /* Allocate a dmatag representing the capabilities of this attachment */ + 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 */ ~0, + /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, + /* flags */ 0, + &dpt->parent_dmat) != 0) { + error = ENXIO; + goto bad; + } + + s = splcam(); + + if (dpt_init(dpt) != 0) { + splx(s); + error = ENXIO; + goto bad; + } + + /* Register with the XPT */ + dpt_attach(dpt); + + splx(s); + + if (bus_setup_intr(dev, dpt->irq_res, INTR_TYPE_CAM | INTR_ENTROPY, + dpt_intr, dpt, &dpt->ih)) { + device_printf(dev, "Unable to register interrupt handler\n"); + error = ENXIO; + goto bad; + } + + return (error); + + bad: + if (dpt->drq_res) { + isa_dma_release(rman_get_start(dpt->drq_res)); + } + + dpt_release_resources(dev); + + if (dpt) + dpt_free(dpt); + + return (error); +} + +static int +dpt_isa_detach (device_t dev) +{ + dpt_softc_t * dpt; + int dma; + int error; + + dpt = device_get_softc(dev); + + dma = rman_get_start(dpt->drq_res); + error = dpt_detach(dev); + isa_dma_release(dma); + + return (error); +} + + +static device_method_t dpt_isa_methods[] = { + /* Device interface */ +#ifdef notyet + DEVMETHOD(device_identify, dpt_isa_identify), +#endif + DEVMETHOD(device_probe, dpt_isa_probe), + DEVMETHOD(device_attach, dpt_isa_attach), + DEVMETHOD(device_detach, dpt_isa_detach), + + { 0, 0 } +}; + +static driver_t dpt_isa_driver = { + "dpt", + dpt_isa_methods, + sizeof(dpt_softc_t), +}; + +DRIVER_MODULE(dpt, isa, dpt_isa_driver, dpt_devclass, 0, 0); |
