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>
35 #include <sys/module.h>
36 #include <sys/mutex.h>
39 #include <machine/bus.h>
40 #include <machine/resource.h>
43 #include <isa/isavar.h>
45 #include <cam/scsi/scsi_all.h>
47 #include <dev/dpt/dpt.h>
50 static void dpt_isa_identify (driver_t *, device_t);
52 static int dpt_isa_probe (device_t);
53 static int dpt_isa_attach (device_t);
54 static int dpt_isa_detach (device_t);
56 static int dpt_isa_valid_irq (int);
57 static int dpt_isa_valid_ioport (int);
60 dpt_isa_valid_irq (int irq)
75 dpt_isa_valid_ioport (int ioport)
91 dpt_isa_identify (driver_t *driver, device_t parent)
95 int isa_bases[] = { 0x1f0, 0x170, 0x330, 0x230, 0 };
98 for (i = 0; isa_bases[i]; i++) {
99 conf = dpt_pio_get_conf(isa_bases[i]);
102 device_printf(parent, "dpt: dpt_pio_get_conf(%x) failed.\n",
107 child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "dpt", -1);
109 device_printf(parent, "dpt: BUS_ADD_CHILD() failed!\n");
112 device_set_driver(child, driver);
113 bus_set_resource(child, SYS_RES_IOPORT, 0, isa_bases[i], 0x9);
120 dpt_isa_probe (device_t dev)
126 if (isa_get_vendorid(dev))
129 if ((io_base = bus_get_resource_start(dev, SYS_RES_IOPORT, 0)) == 0)
132 if (dpt_isa_valid_ioport(io_base))
135 conf = dpt_pio_get_conf(io_base);
137 printf("dpt: dpt_pio_get_conf() failed.\n");
141 if (dpt_isa_valid_irq(conf->IRQ))
144 device_set_desc(dev, "ISA DPT SCSI controller");
145 bus_set_resource(dev, SYS_RES_IRQ, 0, conf->IRQ, 1);
146 bus_set_resource(dev, SYS_RES_DRQ, 0, ((8 - conf->DMA_channel) & 7), 1);
152 dpt_isa_attach (device_t dev)
157 dpt = device_get_softc(dev);
162 dpt->io_type = SYS_RES_IOPORT;
165 error = dpt_alloc_resources(dev);
171 dpt->drq_res = bus_alloc_resource_any(dev, SYS_RES_DRQ, &dpt->drq_rid,
174 device_printf(dev, "No DRQ!\n");
178 isa_dma_acquire(rman_get_start(dpt->drq_res));
179 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 */ bus_get_dma_tag(dev),
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,
195 &dpt->parent_dmat) != 0) {
200 if (dpt_init(dpt) != 0) {
205 /* Register with the XPT */
208 if (bus_setup_intr(dev, dpt->irq_res, INTR_TYPE_CAM | INTR_ENTROPY |
209 INTR_MPSAFE, NULL, dpt_intr, dpt, &dpt->ih)) {
210 device_printf(dev, "Unable to register interrupt handler\n");
219 isa_dma_release(rman_get_start(dpt->drq_res));
222 dpt_release_resources(dev);
231 dpt_isa_detach (device_t dev)
237 dpt = device_get_softc(dev);
239 dma = rman_get_start(dpt->drq_res);
240 error = dpt_detach(dev);
241 isa_dma_release(dma);
247 static device_method_t dpt_isa_methods[] = {
248 /* Device interface */
250 DEVMETHOD(device_identify, dpt_isa_identify),
252 DEVMETHOD(device_probe, dpt_isa_probe),
253 DEVMETHOD(device_attach, dpt_isa_attach),
254 DEVMETHOD(device_detach, dpt_isa_detach),
259 static driver_t dpt_isa_driver = {
265 DRIVER_MODULE(dpt, isa, dpt_isa_driver, dpt_devclass, 0, 0);
266 MODULE_DEPEND(dpt, isa, 1, 1, 1);
267 MODULE_DEPEND(dpt, cam, 1, 1, 1);