2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright 2002 by Peter Grehan. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. 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 ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * 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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 * PSIM local bus ATA controller
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/module.h>
41 #include <sys/malloc.h>
43 #include <sys/taskqueue.h>
44 #include <machine/stdarg.h>
46 #include <machine/resource.h>
47 #include <machine/bus.h>
50 #include <dev/ata/ata-all.h>
53 #include <dev/ofw/openfirm.h>
54 #include <powerpc/psim/iobusvar.h>
57 * Define the iobus ata bus attachment. This creates a pseudo-bus that
58 * the ATA device can be attached to
60 static int ata_iobus_attach(device_t dev);
61 static int ata_iobus_probe(device_t dev);
62 static int ata_iobus_print_child(device_t dev, device_t child);
63 struct resource *ata_iobus_alloc_resource(device_t, device_t, int, int *,
64 rman_res_t, rman_res_t, rman_res_t,
66 static int ata_iobus_release_resource(device_t, device_t, int, int,
69 static device_method_t ata_iobus_methods[] = {
70 /* Device interface */
71 DEVMETHOD(device_probe, ata_iobus_probe),
72 DEVMETHOD(device_attach, ata_iobus_attach),
73 DEVMETHOD(device_shutdown, bus_generic_shutdown),
74 DEVMETHOD(device_suspend, bus_generic_suspend),
75 DEVMETHOD(device_resume, bus_generic_resume),
78 DEVMETHOD(bus_print_child, ata_iobus_print_child),
79 DEVMETHOD(bus_alloc_resource, ata_iobus_alloc_resource),
80 DEVMETHOD(bus_release_resource, ata_iobus_release_resource),
81 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
82 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
83 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
84 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
89 static driver_t ata_iobus_driver = {
95 DRIVER_MODULE(ataiobus, iobus, ata_iobus_driver, NULL, NULL);
96 MODULE_DEPEND(ata, ata, 1, 1, 1);
99 ata_iobus_probe(device_t dev)
101 char *type = iobus_get_name(dev);
103 if (strncmp(type, "ata", 3) != 0)
106 device_set_desc(dev, "PSIM ATA Controller");
111 ata_iobus_attach(device_t dev)
114 * Add a single child per controller. Should be able
117 device_add_child(dev, "ata", -1);
118 return (bus_generic_attach(dev));
122 ata_iobus_print_child(device_t dev, device_t child)
126 retval += bus_print_child_header(dev, child);
128 retval += bus_print_child_footer(dev, child);
134 ata_iobus_alloc_resource(device_t dev, device_t child, int type, int *rid,
135 rman_res_t start, rman_res_t end, rman_res_t count,
138 struct resource *res = NULL;
142 ofw_regs = iobus_get_regs(dev);
145 * The reg array for the PSIM ata device has 6 start/size entries:
148 * 4/5/6 - primary command
149 * 7/8/9 - secondary command
150 * 10/11/12 - primary control
151 * 13/14/15 - secondary control
152 * 16/17/18 - primary/secondary dma registers, unimplemented
154 * The resource values are calculated from these registers
156 if (type == SYS_RES_IOPORT) {
161 end = start + ATA_IOSIZE - 1;
163 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
164 SYS_RES_MEMORY, &myrid,
165 start, end, count, flags);
168 case ATA_CTLADDR_RID:
170 start = ofw_regs[10];
171 end = start + ATA_CTLIOSIZE - 1;
172 count = ATA_CTLIOSIZE;
173 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
174 SYS_RES_MEMORY, &myrid,
175 start, end, count, flags);
179 /* DMA not properly supported by psim */
184 } else if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) {
186 * Pass this on to the parent
188 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
189 SYS_RES_IRQ, rid, 0, ~0, 1, flags));
197 ata_iobus_release_resource(device_t dev, device_t child, int type, int rid,
205 * Define the actual ATA device. This is a sub-bus to the ata-iobus layer
206 * to allow the higher layer bus to massage the resource allocation.
209 static int ata_iobus_sub_probe(device_t dev);
210 static int ata_iobus_sub_setmode(device_t dev, int target, int mode);
212 static device_method_t ata_iobus_sub_methods[] = {
213 /* Device interface */
214 DEVMETHOD(device_probe, ata_iobus_sub_probe),
215 DEVMETHOD(device_attach, ata_attach),
216 DEVMETHOD(device_detach, ata_detach),
217 DEVMETHOD(device_resume, ata_resume),
220 DEVMETHOD(ata_setmode, ata_iobus_sub_setmode),
224 static driver_t ata_iobus_sub_driver = {
226 ata_iobus_sub_methods,
227 sizeof(struct ata_channel),
230 DRIVER_MODULE(ata, ataiobus, ata_iobus_sub_driver, NULL, NULL);
233 ata_iobus_sub_probe(device_t dev)
235 struct ata_channel *ch = device_get_softc(dev);
237 /* Only a single unit per controller thus far */
239 ch->flags = (ATA_USE_16BIT|ATA_NO_SLAVE);
242 return ata_probe(dev);
246 ata_iobus_sub_setmode(device_t parent, int target, int mode)
248 /* Only ever PIO mode here... */