2 * Product specific probe and attach routines for:
3 * Buslogic BT-54X and BT-445 cards
5 * Copyright (c) 1998, 1999 Justin T. Gibbs
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification, immediately at the beginning of the file.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/sys/dev/buslogic/bt_isa.c,v 1.18 1999/10/12 21:35:43 dfr Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
39 #include <bus/isa/isavar.h>
42 #include <bus/cam/scsi/scsi_all.h>
44 static bus_dmamap_callback_t btmapsensebuffers;
47 bt_isa_alloc_resources(device_t dev, u_long portstart, u_long portend)
50 struct resource *port;
55 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
56 portstart, portend, BT_NREGS, RF_ACTIVE);
60 if (isa_get_irq(dev) != -1) {
62 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
66 bus_release_resource(dev, SYS_RES_IOPORT,
73 if (isa_get_drq(dev) != -1) {
75 drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid,
79 bus_release_resource(dev, SYS_RES_IOPORT,
82 bus_release_resource(dev, SYS_RES_IRQ,
89 bt_init_softc(dev, port, irq, drq);
95 bt_isa_release_resources(device_t dev)
97 struct bt_softc *bt = device_get_softc(dev);
100 bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->port);
102 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
104 bus_release_resource(dev, SYS_RES_DRQ, 0, bt->drq);
109 * Check if the device can be found at the port given
110 * and if so, set it up ready for further work
111 * as an argument, takes the isa_device structure from
115 bt_isa_probe(device_t dev)
118 * find unit and check we have that many defined
124 if (isa_get_vendorid(dev))
128 max_port_index = BT_NUM_ISAPORTS - 1;
130 * Bound our board search if the user has
131 * specified an exact port.
133 bt_find_probe_range(isa_get_port(dev), &port_index, &max_port_index);
138 /* Attempt to find an adapter */
139 for (;port_index <= max_port_index; port_index++) {
140 struct bt_probe_info info;
143 ioport = bt_iop_from_bio(port_index);
146 * Ensure this port has not already been claimed already
147 * by a PCI, EISA or ISA adapter.
149 if (bt_check_probed_iop(ioport) != 0)
152 /* Initialise the softc for use during probing */
153 if (bt_isa_alloc_resources(dev, ioport,
154 ioport + BT_NREGS -1) != 0)
157 /* We're going to attempt to probe it now, so mark it probed */
158 bt_mark_probed_bio(port_index);
160 if (bt_port_probe(dev, &info) != 0) {
162 kprintf("bt_isa_probe: Probe failed at 0x%x\n",
164 bt_isa_release_resources(dev);
168 bt_isa_release_resources(dev);
170 bus_set_resource(dev, SYS_RES_DRQ, 0, info.drq, 1);
171 bus_set_resource(dev, SYS_RES_IRQ, 0, info.irq, 1);
180 * Attach all the sub-devices we can find
183 bt_isa_attach(device_t dev)
185 struct bt_softc *bt = device_get_softc(dev);
186 bus_dma_filter_t *filter;
191 /* Initialise softc */
192 error = bt_isa_alloc_resources(dev, 0, ~0);
194 device_printf(dev, "can't allocate resources in bt_isa_attach\n");
198 /* Program the DMA channel for external control */
199 if ((drq = isa_get_drq(dev)) != -1)
202 /* Allocate our parent dmatag */
205 lowaddr = BUS_SPACE_MAXADDR_24BIT;
207 /* XXX Should be a child of the ISA bus dma tag */
208 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
209 lowaddr, /*highaddr*/BUS_SPACE_MAXADDR,
211 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
212 /*nsegments*/BUS_SPACE_UNRESTRICTED,
213 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
214 /*flags*/0, &bt->parent_dmat) != 0) {
215 bt_isa_release_resources(dev);
219 error = bt_init(dev);
221 bt_isa_release_resources(dev);
225 if (lowaddr != BUS_SPACE_MAXADDR_32BIT) {
226 /* DMA tag for our sense buffers */
227 if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1,
229 /*lowaddr*/BUS_SPACE_MAXADDR,
230 /*highaddr*/BUS_SPACE_MAXADDR,
231 /*filter*/NULL, /*filterarg*/NULL,
233 * sizeof(struct scsi_sense_data),
235 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
236 /*flags*/0, &bt->sense_dmat) != 0) {
237 bt_isa_release_resources(dev);
243 /* Allocation of sense buffers */
244 if (bus_dmamem_alloc(bt->sense_dmat,
245 (void *)&bt->sense_buffers,
246 BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) {
247 bt_isa_release_resources(dev);
253 /* And permanently map them */
254 bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap,
256 bt->max_ccbs * sizeof(*bt->sense_buffers),
257 btmapsensebuffers, bt, /*flags*/0);
262 error = bt_attach(dev);
264 bt_isa_release_resources(dev);
271 #define BIOS_MAP_SIZE (16 * 1024)
274 btmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error)
278 bt = (struct bt_softc*)arg;
279 bt->sense_buffers_physbase = segs->ds_addr;
282 static device_method_t bt_isa_methods[] = {
283 /* Device interface */
284 DEVMETHOD(device_probe, bt_isa_probe),
285 DEVMETHOD(device_attach, bt_isa_attach),
290 static driver_t bt_isa_driver = {
293 sizeof(struct bt_softc),
296 static devclass_t bt_devclass;
298 DRIVER_MODULE(bt, isa, bt_isa_driver, bt_devclass, NULL, NULL);