2 * Copyright (c) 2000 Matthew N. Dodd <winter@jurai.net>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
37 #include <machine/bus.h>
38 #include <machine/resource.h>
41 #include <isa/isavar.h>
43 #include <cam/scsi/scsi_all.h>
45 #include <dev/dpt/dpt.h>
48 static void dpt_isa_identify (driver_t *, device_t);
50 static int dpt_isa_probe (device_t);
51 static int dpt_isa_attach (device_t);
52 static int dpt_isa_detach (device_t);
54 static int dpt_isa_valid_irq (int);
55 static int dpt_isa_valid_ioport (int);
58 dpt_isa_valid_irq (int irq)
73 dpt_isa_valid_ioport (int ioport)
89 dpt_isa_identify (driver_t *driver, device_t parent)
93 int isa_bases[] = { 0x1f0, 0x170, 0x330, 0x230, 0 };
96 for (i = 0; isa_bases[i]; i++) {
97 conf = dpt_pio_get_conf(isa_bases[i]);
100 device_printf(parent, "dpt: dpt_pio_get_conf(%x) failed.\n",
105 child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "dpt", -1);
107 device_printf(parent, "dpt: BUS_ADD_CHILD() failed!\n");
110 device_set_driver(child, driver);
111 bus_set_resource(child, SYS_RES_IOPORT, 0, isa_bases[i], 0x9);
118 dpt_isa_probe (device_t dev)
124 if (isa_get_vendorid(dev))
127 if ((io_base = bus_get_resource_start(dev, SYS_RES_IOPORT, 0)) == 0)
130 if (dpt_isa_valid_ioport(io_base))
133 conf = dpt_pio_get_conf(io_base);
135 printf("dpt: dpt_pio_get_conf() failed.\n");
139 if (dpt_isa_valid_irq(conf->IRQ))
142 device_set_desc(dev, "ISA DPT SCSI controller");
143 bus_set_resource(dev, SYS_RES_IRQ, 0, conf->IRQ, 1);
144 bus_set_resource(dev, SYS_RES_DRQ, 0, ((8 - conf->DMA_channel) & 7), 1);
150 dpt_isa_attach (device_t dev)
156 dpt = device_get_softc(dev);
160 dpt->io_type = SYS_RES_IOPORT;
163 error = dpt_alloc_resources(dev);
169 dpt->drq_res = bus_alloc_resource_any(dev, SYS_RES_DRQ, &dpt->drq_rid,
172 device_printf(dev, "No DRQ!\n");
176 isa_dma_acquire(rman_get_start(dpt->drq_res));
177 isa_dmacascade(rman_get_start(dpt->drq_res));
181 /* Allocate a dmatag representing the capabilities of this attachment */
182 if (bus_dma_tag_create( /* parent */ NULL,
185 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
186 /* highaddr */ BUS_SPACE_MAXADDR,
188 /* filterarg */ NULL,
189 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
191 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
193 /* lockfunc */ busdma_lock_mutex,
194 /* lockarg */ &Giant,
195 &dpt->parent_dmat) != 0) {
202 if (dpt_init(dpt) != 0) {
208 /* Register with the XPT */
213 if (bus_setup_intr(dev, dpt->irq_res, INTR_TYPE_CAM | INTR_ENTROPY,
214 dpt_intr, dpt, &dpt->ih)) {
215 device_printf(dev, "Unable to register interrupt handler\n");
224 isa_dma_release(rman_get_start(dpt->drq_res));
227 dpt_release_resources(dev);
236 dpt_isa_detach (device_t dev)
242 dpt = device_get_softc(dev);
244 dma = rman_get_start(dpt->drq_res);
245 error = dpt_detach(dev);
246 isa_dma_release(dma);
252 static device_method_t dpt_isa_methods[] = {
253 /* Device interface */
255 DEVMETHOD(device_identify, dpt_isa_identify),
257 DEVMETHOD(device_probe, dpt_isa_probe),
258 DEVMETHOD(device_attach, dpt_isa_attach),
259 DEVMETHOD(device_detach, dpt_isa_detach),
264 static driver_t dpt_isa_driver = {
270 DRIVER_MODULE(dpt, isa, dpt_isa_driver, dpt_devclass, 0, 0);
271 MODULE_DEPEND(dpt, isa, 1, 1, 1);
272 MODULE_DEPEND(dpt, cam, 1, 1, 1);