diff options
author | mdodd <mdodd@FreeBSD.org> | 2000-04-07 02:50:24 +0000 |
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committer | mdodd <mdodd@FreeBSD.org> | 2000-04-07 02:50:24 +0000 |
commit | bcaa5ea35b04af42346a4c1fa1b72f54e9fddb4d (patch) | |
tree | 6019f1d49bcdc9db1a0a6c726971fe5f1c33466e /sys/dev/dpt/dpt_isa.c | |
parent | e1128bd07d48d6e5290924e7436cee2c89c7bb06 (diff) | |
download | FreeBSD-src-bcaa5ea35b04af42346a4c1fa1b72f54e9fddb4d.zip FreeBSD-src-bcaa5ea35b04af42346a4c1fa1b72f54e9fddb4d.tar.gz |
- Convert dpt_pci.c to newbus.
- Add support for ISA based DPT adapters (this doesn't quite work yet).
- Sync dpt_eisa.c with my local copy.
- Simplify how EISA IDs are matched.
- Prototype.
- Formatting nits.
- Conform to how I do things in dpt_pci.c/dpt_isa.c.
- Modify dpt_scsi.c:dpt_alloc() to DTRT with newbus.
- Add some comments to dpt_scsi.c:dpt_pio_get_conf().
- Add additional check to dpt_scsi.c:dpt_get_conf().
- Add some useful error messages to dpt_scsi.c:dpt_init().
Diffstat (limited to 'sys/dev/dpt/dpt_isa.c')
-rw-r--r-- | sys/dev/dpt/dpt_isa.c | 186 |
1 files changed, 186 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..bb34534 --- /dev/null +++ b/sys/dev/dpt/dpt_isa.c @@ -0,0 +1,186 @@ +/*- + * 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> + +static int dpt_isa_probe (device_t); +static int dpt_isa_attach (device_t); + +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); + + conf = dpt_pio_get_conf(io_base); + if (!conf) { + printf("dpt: dpt_pio_get_conf() failed.\n"); + return (ENXIO); + } + + 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 = NULL; + struct resource *io = 0; + struct resource *irq = 0; + struct resource *drq = 0; + int s; + int rid; + void * ih; + int error = 0; + + rid = 0; + io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, RF_ACTIVE); + if (!io) { + device_printf(dev, "No I/O space?!\n"); + error = ENOMEM; + goto bad; + } + + rid = 0; + irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, RF_ACTIVE); + if (!irq) { + device_printf(dev, "No IRQ!\n"); + error = ENOMEM; + goto bad; + } + + rid = 0; + drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid, 0, ~0, 1, RF_ACTIVE); + if (!drq) { + device_printf(dev, "No DRQ?!\n"); + error = ENOMEM; + goto bad; + } + + dpt = dpt_alloc(dev, rman_get_bustag(io), rman_get_bushandle(io)); + if (dpt == NULL) { + error = ENXIO; + goto bad; + } + + isa_dmacascade(rman_get_start(drq)); + + /* Allocate a dmatag representing the capabilities of this attachment */ + if (bus_dma_tag_create( /* parent */ NULL, + /* alignemnt */ 1, + /* boundary */ 0, + /* lowaddr */ BUS_SPACE_MAXADDR_24BIT, + /* highaddr */ BUS_SPACE_MAXADDR, + /* filter */ NULL, + /* filterarg */ NULL, + /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, + /* nsegments */ BUS_SPACE_UNRESTRICTED, + /* 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, irq, INTR_TYPE_CAM, dpt_intr, dpt, &ih)) { + device_printf(dev, "Unable to register interrupt handler\n"); + error = ENXIO; + goto bad; + } + + return (error); + + bad: + if (dpt) + dpt_free(dpt); + if (io) + bus_release_resource(dev, SYS_RES_IOPORT, 0, io); + if (irq) + bus_release_resource(dev, SYS_RES_IRQ, 0, irq); + if (drq) + bus_release_resource(dev, SYS_RES_DRQ, 0, drq); + + return (error); +} + +static device_method_t dpt_isa_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, dpt_isa_probe), + DEVMETHOD(device_attach, dpt_isa_attach), + + { 0, 0 } +}; + +static driver_t dpt_isa_driver = { + "dpt", + dpt_isa_methods, + sizeof(dpt_softc_t), +}; + +static devclass_t dpt_devclass; + +DRIVER_MODULE(dpt, isa, dpt_isa_driver, dpt_devclass, 0, 0); |