2 * Copyright 2002 by Peter Grehan. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
32 * PSIM local bus ATA controller
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
40 #include <sys/malloc.h>
42 #include <sys/taskqueue.h>
43 #include <machine/stdarg.h>
45 #include <machine/resource.h>
46 #include <machine/bus.h>
49 #include <dev/ata/ata-all.h>
52 #include <dev/ofw/openfirm.h>
53 #include <powerpc/psim/iobusvar.h>
56 * Define the iobus ata bus attachment. This creates a pseudo-bus that
57 * the ATA device can be attached to
59 static int ata_iobus_attach(device_t dev);
60 static int ata_iobus_probe(device_t dev);
61 static int ata_iobus_print_child(device_t dev, device_t child);
62 struct resource *ata_iobus_alloc_resource(device_t, device_t, int, int *,
63 u_long, u_long, u_long, u_int);
64 static int ata_iobus_release_resource(device_t, device_t, int, int,
67 static device_method_t ata_iobus_methods[] = {
68 /* Device interface */
69 DEVMETHOD(device_probe, ata_iobus_probe),
70 DEVMETHOD(device_attach, ata_iobus_attach),
71 DEVMETHOD(device_shutdown, bus_generic_shutdown),
72 DEVMETHOD(device_suspend, bus_generic_suspend),
73 DEVMETHOD(device_resume, bus_generic_resume),
76 DEVMETHOD(bus_print_child, ata_iobus_print_child),
77 DEVMETHOD(bus_alloc_resource, ata_iobus_alloc_resource),
78 DEVMETHOD(bus_release_resource, ata_iobus_release_resource),
79 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
80 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
81 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
82 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
87 static driver_t ata_iobus_driver = {
93 static devclass_t ata_iobus_devclass;
95 DRIVER_MODULE(ataiobus, iobus, ata_iobus_driver, ata_iobus_devclass, NULL,
97 MODULE_DEPEND(ata, ata, 1, 1, 1);
100 ata_iobus_probe(device_t dev)
102 char *type = iobus_get_name(dev);
104 if (strncmp(type, "ata", 3) != 0)
107 device_set_desc(dev, "PSIM ATA Controller");
113 ata_iobus_attach(device_t dev)
116 * Add a single child per controller. Should be able
119 device_add_child(dev, "ata", -1);
120 return (bus_generic_attach(dev));
125 ata_iobus_print_child(device_t dev, device_t child)
129 retval += bus_print_child_header(dev, child);
131 retval += bus_print_child_footer(dev, child);
138 ata_iobus_alloc_resource(device_t dev, device_t child, int type, int *rid,
139 u_long start, u_long end, u_long count, u_int flags)
141 struct resource *res = NULL;
145 ofw_regs = iobus_get_regs(dev);
148 * The reg array for the PSIM ata device has 6 start/size entries:
151 * 4/5/6 - primary command
152 * 7/8/9 - secondary command
153 * 10/11/12 - primary control
154 * 13/14/15 - secondary control
155 * 16/17/18 - primary/secondary dma registers, unimplemented
157 * The resource values are calculated from these registers
159 if (type == SYS_RES_IOPORT) {
164 end = start + ATA_IOSIZE - 1;
166 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
167 SYS_RES_MEMORY, &myrid,
168 start, end, count, flags);
171 case ATA_CTLADDR_RID:
173 start = ofw_regs[10];
174 end = start + ATA_CTLIOSIZE - 1;
175 count = ATA_CTLIOSIZE;
176 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
177 SYS_RES_MEMORY, &myrid,
178 start, end, count, flags);
182 /* DMA not properly supported by psim */
187 } else if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) {
189 * Pass this on to the parent
191 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
192 SYS_RES_IRQ, rid, 0, ~0, 1, flags));
201 ata_iobus_release_resource(device_t dev, device_t child, int type, int rid,
210 * Define the actual ATA device. This is a sub-bus to the ata-iobus layer
211 * to allow the higher layer bus to massage the resource allocation.
214 static int ata_iobus_sub_probe(device_t dev);
215 static int ata_iobus_sub_setmode(device_t dev, int target, int mode);
217 static device_method_t ata_iobus_sub_methods[] = {
218 /* Device interface */
219 DEVMETHOD(device_probe, ata_iobus_sub_probe),
220 DEVMETHOD(device_attach, ata_attach),
221 DEVMETHOD(device_detach, ata_detach),
222 DEVMETHOD(device_resume, ata_resume),
225 DEVMETHOD(ata_setmode, ata_iobus_sub_setmode),
229 static driver_t ata_iobus_sub_driver = {
231 ata_iobus_sub_methods,
232 sizeof(struct ata_channel),
235 DRIVER_MODULE(ata, ataiobus, ata_iobus_sub_driver, ata_devclass, NULL, NULL);
238 ata_iobus_sub_probe(device_t dev)
240 struct ata_channel *ch = device_get_softc(dev);
242 /* Only a single unit per controller thus far */
244 ch->flags = (ATA_USE_16BIT|ATA_NO_SLAVE);
247 return ata_probe(dev);
251 ata_iobus_sub_setmode(device_t parent, int target, int mode)
253 /* Only ever PIO mode here... */