ata_kauai.c revision 137119 
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 137119 2004-11-02 09:29:31Z ssouhlal $");
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
58/*
59 * Offset to alt-control register from base
60 */
61#define  ATA_KAUAI_ALTOFFSET    (ATA_KAUAI_REGOFFSET + 0x160)
62
63/*
64 * Define the gap between registers
65 */
66#define ATA_KAUAI_REGGAP        16
67
68/*
69 * Define the kauai pci bus attachment.
70 */
71static  int  ata_kauai_probe(device_t dev);
72
73static device_method_t ata_kauai_methods[] = {
74        /* Device interface */
75	DEVMETHOD(device_probe,		ata_kauai_probe),
76	DEVMETHOD(device_attach,	ata_attach),
77	DEVMETHOD(device_detach,	bus_generic_detach),
78	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
79	DEVMETHOD(device_suspend,	bus_generic_suspend),
80	DEVMETHOD(device_resume,	bus_generic_resume),
81
82	{ 0, 0 }
83};
84
85static driver_t ata_kauai_driver = {
86	"ata",
87	ata_kauai_methods,
88	sizeof(struct ata_channel),
89};
90
91DRIVER_MODULE(ata, pci, ata_kauai_driver, ata_devclass, 0, 0);
92
93static int
94ata_kauai_locknoop(struct ata_channel *ch, int type)
95{
96	/* XXX SMP ? */
97	return (0);
98}
99
100static void
101ata_kauai_setmode(struct ata_device *atadev, int mode)
102{
103	atadev->mode = ATA_PIO;
104}
105
106
107/*
108 * PCI ID search table
109 */
110static struct kauai_pci_dev {
111        u_int32_t  kpd_devid;
112        char    *kpd_desc;
113} kauai_pci_devlist[] = {
114        { 0x0033106b, "Uninorth2 Kauai ATA Controller" },
115        { 0x003b106b, "Intrepid Kauai ATA Controller" },
116        { 0x0043106b, "K2 Kauai ATA Controller" },
117        { 0, NULL }
118};
119
120static int
121ata_kauai_probe(device_t dev)
122{
123	struct ata_channel *ch;
124	struct resource *mem;
125	u_long startp, countp;
126	u_int32_t devid;
127	int i, found, rid, status;
128
129	found = 0;
130	devid = pci_get_devid(dev);
131        for (i = 0; kauai_pci_devlist[i].kpd_desc != NULL; i++) {
132                if (devid == kauai_pci_devlist[i].kpd_devid) {
133			found = 1;
134                        device_set_desc(dev, kauai_pci_devlist[i].kpd_desc);
135		}
136	}
137
138	if (!found)
139		return (ENXIO);
140
141	/*
142	 * This device seems to ignore writes to the interrupt
143	 * config register, resulting in interrupt resources
144	 * not being attached. If this is the case, use
145	 * Open Firmware to determine the irq, and then attach
146	 * the resource. This allows the ATA common code to
147	 * allocate the irq.
148	 */
149	status = bus_get_resource(dev, SYS_RES_IRQ, 0, &startp, &countp);
150	if (status == ENOENT) {
151		int irq;
152
153		/*
154		 * Aargh, hideous hack until ofw pci intr routine is
155		 * exported
156		 */
157		irq = 39; /* XXX */
158		bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1);
159
160		/*
161		 * Sanity check...
162		 */
163		status = bus_get_resource(dev, SYS_RES_IRQ, 0, &startp,
164		    &countp);
165		if (status == ENOENT ||
166		    startp != 39) {
167			printf("kauai irq not set!\n");
168			return (ENXIO);
169		}
170	}
171
172	ch = device_get_softc(dev);
173	bzero(ch, sizeof(struct ata_channel));
174
175        rid = PCIR_BARS;
176	mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
177        if (mem == NULL) {
178                device_printf(dev, "could not allocate memory\n");
179                return (ENXIO);
180        }
181
182	/*
183	 * Set up the resource vectors
184	 */
185        for (i = ATA_DATA; i <= ATA_STATUS; i++) {
186                ch->r_io[i].res = mem;
187                ch->r_io[i].offset = i*ATA_KAUAI_REGGAP + ATA_KAUAI_REGOFFSET;
188        }
189        ch->r_io[ATA_ALTSTAT].res = mem;
190        ch->r_io[ATA_ALTSTAT].offset = ATA_KAUAI_ALTOFFSET;
191
192        ch->unit = 0;
193        ch->flags |= ATA_USE_16BIT|ATA_NO_SLAVE;
194        ch->locking = ata_kauai_locknoop;
195        ch->device[MASTER].setmode = ata_kauai_setmode;
196        ch->device[SLAVE].setmode = ata_kauai_setmode;
197	ata_generic_hw(ch);
198
199        return (ata_probe(dev));
200}
201
202