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>
38 #include <machine/bus_pio.h>
39 #include <machine/bus.h>
40 #include <machine/resource.h>
43 #include <isa/isavar.h>
44 #include <dev/buslogic/btreg.h>
46 #include <cam/scsi/scsi_all.h>
48 static bus_dma_filter_t btvlbouncefilter;
49 static bus_dmamap_callback_t btmapsensebuffers;
52 bt_isa_alloc_resources(device_t dev, u_long portstart, u_long portend)
55 struct resource *port;
60 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
61 portstart, portend, BT_NREGS, RF_ACTIVE);
65 if (isa_get_irq(dev) != -1) {
67 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
71 bus_release_resource(dev, SYS_RES_IOPORT,
78 if (isa_get_drq(dev) != -1) {
80 drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid,
84 bus_release_resource(dev, SYS_RES_IOPORT,
87 bus_release_resource(dev, SYS_RES_IRQ,
94 bt_init_softc(dev, port, irq, drq);
100 bt_isa_release_resources(device_t dev)
102 struct bt_softc *bt = device_get_softc(dev);
105 bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->port);
107 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
109 bus_release_resource(dev, SYS_RES_DRQ, 0, bt->drq);
114 * Check if the device can be found at the port given
115 * and if so, set it up ready for further work
116 * as an argument, takes the isa_device structure from
120 bt_isa_probe(device_t dev)
123 * find unit and check we have that many defined
129 if (isa_get_vendorid(dev))
133 max_port_index = BT_NUM_ISAPORTS - 1;
135 * Bound our board search if the user has
136 * specified an exact port.
138 bt_find_probe_range(isa_get_port(dev), &port_index, &max_port_index);
143 /* Attempt to find an adapter */
144 for (;port_index <= max_port_index; port_index++) {
145 struct bt_probe_info info;
148 ioport = bt_iop_from_bio(port_index);
151 * Ensure this port has not already been claimed already
152 * by a PCI, EISA or ISA adapter.
154 if (bt_check_probed_iop(ioport) != 0)
157 /* Initialise the softc for use during probing */
158 if (bt_isa_alloc_resources(dev, ioport,
159 ioport + BT_NREGS -1) != 0)
162 /* We're going to attempt to probe it now, so mark it probed */
163 bt_mark_probed_bio(port_index);
165 if (bt_port_probe(dev, &info) != 0) {
167 printf("bt_isa_probe: Probe failed at 0x%x\n",
169 bt_isa_release_resources(dev);
173 bt_isa_release_resources(dev);
175 bus_set_resource(dev, SYS_RES_DRQ, 0, info.drq, 1);
176 bus_set_resource(dev, SYS_RES_IRQ, 0, info.irq, 1);
185 * Attach all the sub-devices we can find
188 bt_isa_attach(device_t dev)
190 struct bt_softc *bt = device_get_softc(dev);
191 bus_dma_filter_t *filter;
196 /* Initialise softc */
197 error = bt_isa_alloc_resources(dev, 0, ~0);
199 device_printf(dev, "can't allocate resources in bt_isa_attach\n");
203 /* Program the DMA channel for external control */
204 if ((drq = isa_get_drq(dev)) != -1)
207 /* Allocate our parent dmatag */
210 lowaddr = BUS_SPACE_MAXADDR_24BIT;
211 if (bt->model[0] == '4') {
213 * This is a VL adapter. Typically, VL devices have access
214 * to the full 32bit address space. On BT-445S adapters
215 * prior to revision E, there is a hardware bug that causes
216 * corruption of transfers to/from addresses in the range of
217 * the BIOS modulo 16MB. The only properly functioning
218 * BT-445S Host Adapters have firmware version 3.37.
219 * If we encounter one of these adapters and the BIOS is
220 * installed, install a filter function for our bus_dma_map
221 * that will catch these accesses and bounce them to a safe
224 if (bt->bios_addr != 0
225 && strcmp(bt->model, "445S") == 0
226 && strcmp(bt->firmware_ver, "3.37") < 0) {
227 filter = btvlbouncefilter;
230 lowaddr = BUS_SPACE_MAXADDR_32BIT;
234 /* XXX Should be a child of the ISA or VL bus dma tag */
235 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
236 lowaddr, /*highaddr*/BUS_SPACE_MAXADDR,
238 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
239 /*nsegments*/BUS_SPACE_UNRESTRICTED,
240 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
241 /*flags*/0, &bt->parent_dmat) != 0) {
242 bt_isa_release_resources(dev);
246 error = bt_init(dev);
248 bt_isa_release_resources(dev);
252 if (lowaddr != BUS_SPACE_MAXADDR_32BIT) {
253 /* DMA tag for our sense buffers */
254 if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1,
256 /*lowaddr*/BUS_SPACE_MAXADDR,
257 /*highaddr*/BUS_SPACE_MAXADDR,
258 /*filter*/NULL, /*filterarg*/NULL,
260 * sizeof(struct scsi_sense_data),
262 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
263 /*flags*/0, &bt->sense_dmat) != 0) {
264 bt_isa_release_resources(dev);
270 /* Allocation of sense buffers */
271 if (bus_dmamem_alloc(bt->sense_dmat,
272 (void **)&bt->sense_buffers,
273 BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) {
274 bt_isa_release_resources(dev);
280 /* And permanently map them */
281 bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap,
283 bt->max_ccbs * sizeof(*bt->sense_buffers),
284 btmapsensebuffers, bt, /*flags*/0);
289 error = bt_attach(dev);
291 bt_isa_release_resources(dev);
298 #define BIOS_MAP_SIZE (16 * 1024)
301 btvlbouncefilter(void *arg, bus_addr_t addr)
305 bt = (struct bt_softc *)arg;
307 addr &= BUS_SPACE_MAXADDR_24BIT;
310 || (addr >= bt->bios_addr
311 && addr < (bt->bios_addr + BIOS_MAP_SIZE)))
317 btmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error)
321 bt = (struct bt_softc*)arg;
322 bt->sense_buffers_physbase = segs->ds_addr;
325 static device_method_t bt_isa_methods[] = {
326 /* Device interface */
327 DEVMETHOD(device_probe, bt_isa_probe),
328 DEVMETHOD(device_attach, bt_isa_attach),
333 static driver_t bt_isa_driver = {
336 sizeof(struct bt_softc),
339 static devclass_t bt_devclass;
341 DRIVER_MODULE(bt, isa, bt_isa_driver, bt_devclass, 0, 0);