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 $
27 * $DragonFly: src/sys/dev/disk/buslogic/Attic/bt_mca.c,v 1.3 2003/08/07 21:16:52 dillon Exp $
31 * Written using the bt_isa/bt_pci code as a reference.
33 * Thanks to Andy Farkas <andyf@speednet.com.au> for
34 * testing and feedback.
37 #include <sys/types.h>
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/kernel.h>
42 #include <machine/cpufunc.h>
43 #include <machine/md_var.h>
45 #include <sys/module.h>
48 #include <machine/bus.h>
49 #include <machine/resource.h>
52 #include <bus/mca/mca_busreg.h>
53 #include <bus/mca/mca_busvar.h>
55 #include <bus/isa/i386/isa_dma.h>
59 #include <bus/cam/scsi/scsi_all.h>
61 static struct mca_ident bt_mca_devs[] = {
62 { 0x0708, "BusLogic 32 Bit Bus Master MCA-to-SCSI Host Adapter" },
63 { 0x0708, "BusTek BT-640A Micro Channel to SCSI Host Adapter" },
64 { 0x0708, "Storage Dimensions SDC3211B 32-bit SCSI Host Adapter" },
65 { 0x0709, "Storage Dimensions SDC3211F 32-bit FAST SCSI Host Adapter" },
69 #define BT_MCA_IOPORT_POS1 MCA_ADP_POS(MCA_POS0)
70 #define BT_MCA_IOPORT_POS2 MCA_ADP_POS(MCA_POS1)
71 #define BT_MCA_IOPORT_MASK1 0x10
72 #define BT_MCA_IOPORT_MASK2 0x03
73 #define BT_MCA_IOPORT_SIZE 0x03
74 #define BT_MCA_IOPORT(pos) (0x30 + \
76 BT_MCA_IOPORT_MASK2) << 8) + \
78 BT_MCA_IOPORT_MASK1) >> 2))
80 #define BT_MCA_IRQ_POS MCA_ADP_POS(MCA_POS0)
81 #define BT_MCA_IRQ_MASK 0x0e
82 #define BT_MCA_IRQ(pos) (((pos & BT_MCA_IRQ_MASK) >> 1) + 8)
84 #define BT_MCA_DRQ_POS MCA_ADP_POS(MCA_POS3)
85 #define BT_MCA_DRQ_MASK 0x0f
86 #define BT_MCA_DRQ(pos) (pos & BT_MCA_DRQ_MASK)
88 #define BT_MCA_SCSIID_POS MCA_ADP_POS(MCA_POS2)
89 #define BT_MCA_SCSIID_MASK 0xe0
90 #define BT_MCA_SCSIID(pos) ((pos & BT_MCA_SCSIID_MASK) >> 5)
92 static bus_dma_filter_t btvlbouncefilter;
93 static bus_dmamap_callback_t btmapsensebuffers;
96 bt_mca_release_resources (device_t dev)
98 struct bt_softc * bt = device_get_softc(dev);
101 bus_release_resource(dev, SYS_RES_IOPORT, 0, bt->port);
103 bus_release_resource(dev, SYS_RES_IRQ, 0, bt->irq);
105 bus_release_resource(dev, SYS_RES_DRQ, 0, bt->drq);
110 #define BT_MCA_PROBE 0
111 #define BT_MCA_ATTACH 1
114 bt_mca_alloc_resources(device_t dev, int mode)
116 struct resource * io = NULL;
117 struct resource * irq = NULL;
118 struct resource * drq = NULL;
122 io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
123 0, ~0, 1, RF_ACTIVE);
125 printf("bt_mca_alloc_resources() failed to allocate IOPORT\n");
129 if (mode == BT_MCA_ATTACH) {
132 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
133 0, ~0, 1, RF_ACTIVE);
135 printf("bt_mca_alloc_resources() failed to allocate IRQ\n");
140 drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid,
141 0, ~0, 1, RF_ACTIVE);
143 printf("bt_mca_alloc_resources() failed to allocate DRQ\n");
148 bt_init_softc(dev, io, irq, drq);
152 bt_mca_release_resources(dev);
157 bt_mca_probe (device_t dev)
160 mca_id_t id = mca_get_id(dev);
161 struct bt_probe_info info;
162 u_int32_t iobase = 0;
163 u_int32_t iosize = 0;
169 desc = mca_match_id(id, bt_mca_devs);
172 device_set_desc(dev, desc);
174 pos = (mca_pos_read(dev, BT_MCA_IOPORT_POS1) & BT_MCA_IOPORT_MASK1) |
175 (mca_pos_read(dev, BT_MCA_IOPORT_POS2) & BT_MCA_IOPORT_MASK2);
176 iobase = BT_MCA_IOPORT(pos);
177 iosize = BT_MCA_IOPORT_SIZE;
179 pos = mca_pos_read(dev, BT_MCA_DRQ_POS);
180 drq = BT_MCA_DRQ(pos);
182 pos = mca_pos_read(dev, BT_MCA_IRQ_POS);
183 irq = BT_MCA_IRQ(pos);
185 bt_mark_probed_iop(iobase);
187 mca_add_iospace(dev, iobase, iosize);
189 /* And allocate them */
190 bt_mca_alloc_resources(dev, BT_MCA_PROBE);
192 if (bt_port_probe(dev, &info) != 0) {
193 printf("bt_mca_probe: Probe failed for "
194 "card at slot %d\n", mca_get_slot(dev) + 1);
197 mca_add_drq(dev, drq);
198 mca_add_irq(dev, irq);
201 bt_mca_release_resources(dev);
207 bt_mca_attach (device_t dev)
209 struct bt_softc * bt = device_get_softc(dev);
212 /* Allocate resources */
213 if ((error = bt_mca_alloc_resources(dev, BT_MCA_ATTACH))) {
214 device_printf(dev, "Unable to allocate resources in bt_mca_attach()\n");
218 isa_dmacascade(rman_get_start(bt->drq));
220 /* Allocate a dmatag for our CCB DMA maps */
221 if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
222 /*lowaddr*/BUS_SPACE_MAXADDR_24BIT,
223 /*highaddr*/BUS_SPACE_MAXADDR,
224 /*filter*/btvlbouncefilter,
226 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
227 /*nsegments*/BUS_SPACE_UNRESTRICTED,
228 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
229 /*flags*/0, &bt->parent_dmat) != 0) {
230 bt_mca_release_resources(dev);
235 bt_mca_release_resources(dev);
239 /* DMA tag for our sense buffers */
240 if (bus_dma_tag_create(bt->parent_dmat, /*alignment*/1,
242 /*lowaddr*/BUS_SPACE_MAXADDR,
243 /*highaddr*/BUS_SPACE_MAXADDR,
244 /*filter*/NULL, /*filterarg*/NULL,
245 bt->max_ccbs * sizeof(struct scsi_sense_data),
247 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
248 /*flags*/0, &bt->sense_dmat) != 0) {
249 bt_mca_release_resources(dev);
255 /* Allocation of sense buffers */
256 if (bus_dmamem_alloc(bt->sense_dmat,
257 (void **)&bt->sense_buffers,
258 BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) {
259 bt_mca_release_resources(dev);
265 /* And permanently map them */
266 bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap,
268 bt->max_ccbs * sizeof(*bt->sense_buffers),
269 btmapsensebuffers, bt, /*flags*/0);
273 if ((error = bt_attach(dev))) {
274 bt_mca_release_resources(dev);
282 * This code should be shared with the ISA
283 * stubs as its exactly the same.
286 #define BIOS_MAP_SIZE (16 * 1024)
289 btvlbouncefilter(void *arg, bus_addr_t addr)
293 bt = (struct bt_softc *)arg;
295 addr &= BUS_SPACE_MAXADDR_24BIT;
298 || (addr >= bt->bios_addr
299 && addr < (bt->bios_addr + BIOS_MAP_SIZE)))
305 btmapsensebuffers(void *arg, bus_dma_segment_t *segs, int nseg, int error)
309 bt = (struct bt_softc*)arg;
310 bt->sense_buffers_physbase = segs->ds_addr;
313 static device_method_t bt_mca_methods[] = {
314 /* Device interface */
315 DEVMETHOD(device_probe, bt_mca_probe),
316 DEVMETHOD(device_attach, bt_mca_attach),
321 static driver_t bt_mca_driver = {
324 sizeof(struct bt_softc),
327 static devclass_t bt_devclass;
329 DRIVER_MODULE(bt, mca, bt_mca_driver, bt_devclass, 0, 0);