Merge /pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / drivers / usb / host / ohci-ps3.c
1 /*
2  *  PS3 OHCI Host Controller driver
3  *
4  *  Copyright (C) 2006 Sony Computer Entertainment Inc.
5  *  Copyright 2006 Sony Corp.
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; version 2 of the License.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20
21 #include <asm/ps3.h>
22
23 static int ps3_ohci_hc_reset(struct usb_hcd *hcd)
24 {
25         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
26
27         ohci->flags |= OHCI_QUIRK_BE_MMIO;
28         ohci_hcd_init(ohci);
29         return ohci_init(ohci);
30 }
31
32 static int __devinit ps3_ohci_hc_start(struct usb_hcd *hcd)
33 {
34         int result;
35         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
36
37         /* Handle root hub init quirk in spider south bridge. */
38         /* Also set PwrOn2PwrGood to 0x7f (254ms). */
39
40         ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM,
41                 &ohci->regs->roothub.a);
42         ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b);
43
44         result = ohci_run(ohci);
45
46         if (result < 0) {
47                 err("can't start %s", hcd->self.bus_name);
48                 ohci_stop(hcd);
49         }
50
51         return result;
52 }
53
54 static const struct hc_driver ps3_ohci_hc_driver = {
55         .description            = hcd_name,
56         .product_desc           = "PS3 OHCI Host Controller",
57         .hcd_priv_size          = sizeof(struct ohci_hcd),
58         .irq                    = ohci_irq,
59         .flags                  = HCD_MEMORY | HCD_USB11,
60         .reset                  = ps3_ohci_hc_reset,
61         .start                  = ps3_ohci_hc_start,
62         .stop                   = ohci_stop,
63         .shutdown               = ohci_shutdown,
64         .urb_enqueue            = ohci_urb_enqueue,
65         .urb_dequeue            = ohci_urb_dequeue,
66         .endpoint_disable       = ohci_endpoint_disable,
67         .get_frame_number       = ohci_get_frame,
68         .hub_status_data        = ohci_hub_status_data,
69         .hub_control            = ohci_hub_control,
70         .hub_irq_enable         = ohci_rhsc_enable,
71         .start_port_reset       = ohci_start_port_reset,
72 #if defined(CONFIG_PM)
73         .bus_suspend            = ohci_bus_suspend,
74         .bus_resume             = ohci_bus_resume,
75 #endif
76 };
77
78 static int ps3_ohci_sb_probe(struct ps3_system_bus_device *dev)
79 {
80         int result;
81         struct usb_hcd *hcd;
82         unsigned int virq;
83         static u64 dummy_mask = DMA_32BIT_MASK;
84
85         if (usb_disabled()) {
86                 result = -ENODEV;
87                 goto fail_start;
88         }
89
90         result = ps3_mmio_region_create(dev->m_region);
91
92         if (result) {
93                 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
94                         __func__, __LINE__);
95                 result = -EPERM;
96                 goto fail_mmio;
97         }
98
99         dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
100                 __LINE__, dev->m_region->lpar_addr);
101
102         result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
103
104         if (result) {
105                 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
106                         __func__, __LINE__, virq);
107                 result = -EPERM;
108                 goto fail_irq;
109         }
110
111         dev->core.power.power_state = PMSG_ON;
112         dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
113
114         hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev->core.bus_id);
115
116         if (!hcd) {
117                 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
118                         __LINE__);
119                 result = -ENOMEM;
120                 goto fail_create_hcd;
121         }
122
123         hcd->rsrc_start = dev->m_region->lpar_addr;
124         hcd->rsrc_len = dev->m_region->len;
125         hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
126
127         if (!hcd->regs) {
128                 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
129                         __LINE__);
130                 result = -EPERM;
131                 goto fail_ioremap;
132         }
133
134         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
135                 (unsigned long)hcd->rsrc_start);
136         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
137                 (unsigned long)hcd->rsrc_len);
138         dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
139                 (unsigned long)hcd->regs);
140         dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
141                 (unsigned long)virq);
142
143         ps3_system_bus_set_driver_data(dev, hcd);
144
145         result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
146
147         if (result) {
148                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
149                         __func__, __LINE__, result);
150                 goto fail_add_hcd;
151         }
152
153         return result;
154
155 fail_add_hcd:
156         iounmap(hcd->regs);
157 fail_ioremap:
158         usb_put_hcd(hcd);
159 fail_create_hcd:
160         ps3_io_irq_destroy(virq);
161 fail_irq:
162         ps3_free_mmio_region(dev->m_region);
163 fail_mmio:
164 fail_start:
165         return result;
166 }
167
168 static int ps3_ohci_sb_remove (struct ps3_system_bus_device *dev)
169 {
170         struct usb_hcd *hcd =
171                 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev);
172
173         usb_put_hcd(hcd);
174         ps3_system_bus_set_driver_data(dev, NULL);
175
176         return 0;
177 }
178
179 MODULE_ALIAS("ps3-ohci");
180
181 static struct ps3_system_bus_driver ps3_ohci_sb_driver = {
182         .match_id = PS3_MATCH_ID_OHCI,
183         .core = {
184                 .name = "ps3-ohci-driver",
185         },
186         .probe = ps3_ohci_sb_probe,
187         .remove = ps3_ohci_sb_remove,
188 };