2 * Copyright (c) 1999 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
26 * $FreeBSD: src/sys/dev/buslogic/bt_mca.c,v 1.4 1999/10/09 04:02:02 mdodd Exp $
30 * Written using the bt_isa/bt_pci code as a reference.
32 * Thanks to Andy Farkas <andyf@speednet.com.au> for
33 * testing and feedback.
36 #include <sys/types.h>
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
41 #include <machine/cpufunc.h>
42 #include <machine/md_var.h>
44 #include <sys/module.h>
47 #include <machine/bus.h>
48 #include <machine/resource.h>
51 #include <dev/mca/mca_busreg.h>
52 #include <dev/mca/mca_busvar.h>
54 #include <i386/isa/isa_dma.h>
56 #include <dev/buslogic/btreg.h>
58 #include <cam/scsi/scsi_all.h>
60 static struct mca_ident bt_mca_devs[] = {
61 { 0x0708, "BusLogic 32 Bit Bus Master MCA-to-SCSI Host Adapter" },
62 { 0x0708, "BusTek BT-640A Micro Channel to SCSI Host Adapter" },
63 { 0x0708, "Storage Dimensions SDC3211B 32-bit SCSI Host Adapter" },
64 { 0x0709, "Storage Dimensions SDC3211F 32-bit FAST SCSI Host Adapter" },
68 #define BT_MCA_IOPORT_POS1 MCA_ADP_POS(MCA_POS0)
69 #define BT_MCA_IOPORT_POS2 MCA_ADP_POS(MCA_POS1)
70 #define BT_MCA_IOPORT_MASK1 0x10
71 #define BT_MCA_IOPORT_MASK2 0x03
72 #define BT_MCA_IOPORT_SIZE 0x03
73 #define BT_MCA_IOPORT(pos) (0x30 + \
75 BT_MCA_IOPORT_MASK2) << 8) + \
77 BT_MCA_IOPORT_MASK1) >> 2))
79 #define BT_MCA_IRQ_POS MCA_ADP_POS(MCA_POS0)
80 #define BT_MCA_IRQ_MASK 0x0e
81 #define BT_MCA_IRQ(pos) (((pos & BT_MCA_IRQ_MASK) >> 1) + 8)
83 #define BT_MCA_DRQ_POS MCA_ADP_POS(MCA_POS3)
84 #define BT_MCA_DRQ_MASK 0x0f
85 #define BT_MCA_DRQ(pos) (pos & BT_MCA_DRQ_MASK)
87 #define BT_MCA_SCSIID_POS MCA_ADP_POS(MCA_POS2)
88 #define BT_MCA_SCSIID_MASK 0xe0
89 #define BT_MCA_SCSIID(pos) ((pos & BT_MCA_SCSIID_MASK) >> 5)
91 static bus_dma_filter_t btvlbouncefilter;
92 static bus_dmamap_callback_t btmapsensebuffers;
95 bt_mca_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 #define BT_MCA_PROBE 0
110 #define BT_MCA_ATTACH 1
113 bt_mca_alloc_resources(device_t dev, int mode)
115 struct resource * io = NULL;
116 struct resource * irq = NULL;
117 struct resource * drq = NULL;
121 io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
122 0, ~0, 1, RF_ACTIVE);
124 printf("bt_mca_alloc_resources() failed to allocate IOPORT\n");
128 if (mode == BT_MCA_ATTACH) {
131 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
132 0, ~0, 1, RF_ACTIVE);
134 printf("bt_mca_alloc_resources() failed to allocate IRQ\n");
139 drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid,
140 0, ~0, 1, RF_ACTIVE);
142 printf("bt_mca_alloc_resources() failed to allocate DRQ\n");
147 bt_init_softc(dev, io, irq, drq);
151 bt_mca_release_resources(dev);
156 bt_mca_probe (device_t dev)
159 mca_id_t id = mca_get_id(dev);
160 struct bt_probe_info info;
161 u_int32_t iobase = 0;
162 u_int32_t iosize = 0;
168 desc = mca_match_id(id, bt_mca_devs);
171 device_set_desc(dev, desc);
173 pos = (mca_pos_read(dev, BT_MCA_IOPORT_POS1) & BT_MCA_IOPORT_MASK1) |
174 (mca_pos_read(dev, BT_MCA_IOPORT_POS2) & BT_MCA_IOPORT_MASK2);
175 iobase = BT_MCA_IOPORT(pos);
176 iosize = BT_MCA_IOPORT_SIZE;
178 pos = mca_pos_read(dev, BT_MCA_DRQ_POS);
179 drq = BT_MCA_DRQ(pos);
181 pos = mca_pos_read(dev, BT_MCA_IRQ_POS);
182 irq = BT_MCA_IRQ(pos);
184 bt_mark_probed_iop(iobase);
186 mca_add_iospace(dev, iobase, iosize);
188 /* And allocate them */
189 bt_mca_alloc_resources(dev, BT_MCA_PROBE);
191 if (bt_port_probe(dev, &info) != 0) {
192 printf("bt_mca_probe: Probe failed for "
193 "card at slot %d\n", mca_get_slot(dev) + 1);
196 mca_add_drq(dev, drq);
197 mca_add_irq(dev, irq);
200 bt_mca_release_resources(dev);
206 bt_mca_attach (device_t dev)
208 struct bt_softc * bt = device_get_softc(dev);
211 /* Allocate resources */
212 if ((error = bt_mca_alloc_resources(dev, BT_MCA_ATTACH))) {
213 device_printf(dev, "Unable to allocate resources in bt_mca_attach()\n");
217 isa_dmacascade(rman_get_start(bt->drq));
219 /* Allocate a dmatag for our CCB DMA maps */
220 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
221 /*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
222 /*highaddr*/BUS_SPACE_MAXADDR,
223 /*filter*/btvlbouncefilter,
225 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
226 /*nsegments*/BUS_SPACE_UNRESTRICTED,
227 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
228 /*flags*/0, &bt->parent_dmat) != 0) {
229 bt_mca_release_resources(dev);
234 bt_mca_release_resources(dev);
238 /* DMA tag for our sense buffers */
239 if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1,
241 /*lowaddr*/BUS_SPACE_MAXADDR,
242 /*highaddr*/BUS_SPACE_MAXADDR,
243 /*filter*/NULL, /*filterarg*/NULL,
244 bt->max_ccbs * sizeof(struct scsi_sense_data),
246 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
247 /*flags*/0, &bt->sense_dmat) != 0) {
248 bt_mca_release_resources(dev);
254 /* Allocation of sense buffers */
255 if (bus_dmamem_alloc(bt->sense_dmat,
256 (void **)&bt->sense_buffers,
257 BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) {
258 bt_mca_release_resources(dev);
264 /* And permanently map them */
265 bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap,
267 bt->max_ccbs * sizeof(*bt->sense_buffers),
268 btmapsensebuffers, bt, /*flags*/0);
272 if ((error = bt_attach(dev))) {
273 bt_mca_release_resources(dev);
281 * This code should be shared with the ISA
282 * stubs as its exactly the same.
285 #define BIOS_MAP_SIZE (16 * 1024)
288 btvlbouncefilter(void *arg, bus_addr_t addr)
292 bt = (struct bt_softc *)arg;
294 addr &= BUS_SPACE_MAXADDR_24BIT;
297 || (addr >= bt->bios_addr
298 && addr < (bt->bios_addr + BIOS_MAP_SIZE)))
304 btmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error)
308 bt = (struct bt_softc*)arg;
309 bt->sense_buffers_physbase = segs->ds_addr;
312 static device_method_t bt_mca_methods[] = {
313 /* Device interface */
314 DEVMETHOD(device_probe, bt_mca_probe),
315 DEVMETHOD(device_attach, bt_mca_attach),
320 static driver_t bt_mca_driver = {
323 sizeof(struct bt_softc),
326 static devclass_t bt_devclass;
328 DRIVER_MODULE(bt, mca, bt_mca_driver, bt_devclass, 0, 0);