ata_kauai.c revision 125735 
1/*
2 * Copyright 2004 by Peter Grehan. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
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.
14 *
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
25 * SUCH DAMAGE.
26 *
27 */
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: head/sys/powerpc/powermac/ata_kauai.c 125735 2004-02-12 09:17:16Z grehan $");
30
31/*
32 * Mac 'Kauai' PCI ATA controller
33 */
34#include "opt_ata.h"
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/module.h>
39#include <sys/bus.h>
40#include <sys/malloc.h>
41#include <sys/sema.h>
42#include <sys/taskqueue.h>
43#include <vm/uma.h>
44#include <machine/stdarg.h>
45#include <machine/resource.h>
46#include <machine/bus.h>
47#include <sys/rman.h>
48#include <sys/ata.h>
49#include <dev/ata/ata-all.h>
50
51#include <dev/ofw/openfirm.h>
52
53#include <dev/pci/pcivar.h>
54#include <dev/pci/pcireg.h>
55
56#define  ATA_KAUAI_REGOFFSET	0x2000
57#define  ATA_KAUAI_ALTOFFSET    (ATA_KAUAI_REGOFFSET + 0x16)
58
59/*
60 * Define the kauai pci bus attachment.
61 */
62static  int  ata_kauai_probe(device_t dev);
63
64static device_method_t ata_kauai_methods[] = {
65        /* Device interface */
66	DEVMETHOD(device_probe,		ata_kauai_probe),
67	DEVMETHOD(device_attach,	ata_attach),
68	DEVMETHOD(device_detach,	bus_generic_detach),
69	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
70	DEVMETHOD(device_suspend,	bus_generic_suspend),
71	DEVMETHOD(device_resume,	bus_generic_resume),
72
73	{ 0, 0 }
74};
75
76static driver_t ata_kauai_driver = {
77	"ata",
78	ata_kauai_methods,
79	sizeof(struct ata_channel),
80};
81
82DRIVER_MODULE(ata, pci, ata_kauai_driver, ata_devclass, 0, 0);
83
84static void
85ata_kauai_locknoop(struct ata_channel *ch, int type)
86{
87	/* XXX SMP ? */
88}
89
90static void
91ata_kauai_setmode(struct ata_device *atadev, int mode)
92{
93	atadev->mode = ATA_PIO;
94}
95
96
97/*
98 * PCI ID search table
99 */
100static struct kauai_pci_dev {
101        u_int32_t  kpd_devid;
102        char    *kpd_desc;
103} kauai_pci_devlist[] = {
104        { 0x0033106b, "Uninorth2 Kauai ATA Controller" },
105        { 0x003b106b, "Intrepid Kauai ATA Controller" },
106        { 0x0043106b, "K2 Kauai ATA Controller" },
107        { 0, NULL }
108};
109
110static int
111ata_kauai_probe(device_t dev)
112{
113	struct ata_channel *ch;
114	struct resource *mem;
115	u_long startp, countp;
116	u_int32_t devid;
117	int i, found, rid, status;
118
119	found = 0;
120	devid = pci_get_devid(dev);
121        for (i = 0; kauai_pci_devlist[i].kpd_desc != NULL; i++) {
122                if (devid == kauai_pci_devlist[i].kpd_devid) {
123			found = 1;
124                        device_set_desc(dev, kauai_pci_devlist[i].kpd_desc);
125		}
126	}
127
128	if (!found)
129		return (ENXIO);
130
131	/*
132	 * This device seems to ignore writes to the interrupt
133	 * config register, resulting in interrupt resources
134	 * not being attached. If this is the case, use
135	 * OpenFirmware to determine the irq, and then attach
136	 * the resource. This allows the ATA common code to
137	 * allocate the irq.
138	 */
139	status = bus_get_resource(dev, SYS_RES_IRQ, 0, &startp, &countp);
140	if (status == ENOENT) {
141		int irq;
142
143		/*
144		 * Aargh, hideous hack until ofw pci intr routine is
145		 * exported
146		 */
147		irq = 39; /* XXX */
148		bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1);
149
150		/*
151		 * Sanity check...
152		 */
153		status = bus_get_resource(dev, SYS_RES_IRQ, 0, &startp,
154		    &countp);
155		if (status == ENOENT ||
156		    startp != 39) {
157			printf("kauai irq not set!\n");
158			return (ENXIO);
159		}
160	}
161
162	ch = device_get_softc(dev);
163
164        rid = 0;
165        mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~1, 1,
166            RF_ACTIVE);
167        if (mem == NULL) {
168                device_printf(dev, "could not allocate memory\n");
169                return (ENXIO);
170        }
171
172	/*
173	 * Set up the resource vectors
174	 */
175        for (i = ATA_DATA; i <= ATA_STATUS; i++) {
176                ch->r_io[i].res = mem;
177                ch->r_io[i].offset = i + ATA_KAUAI_REGOFFSET;
178        }
179        ch->r_io[ATA_ALTSTAT].res = mem;
180        ch->r_io[ATA_ALTSTAT].offset = ATA_KAUAI_ALTOFFSET;
181
182        ch->unit = 0;
183        ch->flags |= ATA_USE_16BIT|ATA_NO_SLAVE;
184        ch->locking = ata_kauai_locknoop;
185        ch->device[MASTER].setmode = ata_kauai_setmode;
186        ch->device[SLAVE].setmode = ata_kauai_setmode;
187
188        return (ata_probe(dev));
189}
190
191