Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
[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/firmware.h>
22 #include <asm/ps3.h>
23
24 static int ps3_ohci_hc_reset(struct usb_hcd *hcd)
25 {
26         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
27
28         ohci->flags |= OHCI_QUIRK_BE_MMIO;
29         ohci_hcd_init(ohci);
30         return ohci_init(ohci);
31 }
32
33 static int __devinit ps3_ohci_hc_start(struct usb_hcd *hcd)
34 {
35         int result;
36         struct ohci_hcd *ohci = hcd_to_ohci(hcd);
37
38         /* Handle root hub init quirk in spider south bridge. */
39         /* Also set PwrOn2PwrGood to 0x7f (254ms). */
40
41         ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM,
42                 &ohci->regs->roothub.a);
43         ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b);
44
45         result = ohci_run(ohci);
46
47         if (result < 0) {
48                 err("can't start %s", hcd->self.bus_name);
49                 ohci_stop(hcd);
50         }
51
52         return result;
53 }
54
55 static const struct hc_driver ps3_ohci_hc_driver = {
56         .description            = hcd_name,
57         .product_desc           = "PS3 OHCI Host Controller",
58         .hcd_priv_size          = sizeof(struct ohci_hcd),
59         .irq                    = ohci_irq,
60         .flags                  = HCD_MEMORY | HCD_USB11,
61         .reset                  = ps3_ohci_hc_reset,
62         .start                  = ps3_ohci_hc_start,
63         .stop                   = ohci_stop,
64         .shutdown               = ohci_shutdown,
65         .urb_enqueue            = ohci_urb_enqueue,
66         .urb_dequeue            = ohci_urb_dequeue,
67         .endpoint_disable       = ohci_endpoint_disable,
68         .get_frame_number       = ohci_get_frame,
69         .hub_status_data        = ohci_hub_status_data,
70         .hub_control            = ohci_hub_control,
71         .hub_irq_enable         = ohci_rhsc_enable,
72         .start_port_reset       = ohci_start_port_reset,
73 #if defined(CONFIG_PM)
74         .bus_suspend            = ohci_bus_suspend,
75         .bus_resume             = ohci_bus_resume,
76 #endif
77 };
78
79 static int ps3_ohci_probe(struct ps3_system_bus_device *dev)
80 {
81         int result;
82         struct usb_hcd *hcd;
83         unsigned int virq;
84         static u64 dummy_mask = DMA_32BIT_MASK;
85
86         if (usb_disabled()) {
87                 result = -ENODEV;
88                 goto fail_start;
89         }
90
91         result = ps3_open_hv_device(dev);
92
93         if (result) {
94                 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n",
95                         __func__, __LINE__, ps3_result(result));
96                 result = -EPERM;
97                 goto fail_open;
98         }
99
100         result = ps3_dma_region_create(dev->d_region);
101
102         if (result) {
103                 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
104                         "(%d)\n", __func__, __LINE__, result);
105                 BUG_ON("check region type");
106                 goto fail_dma_region;
107         }
108
109         result = ps3_mmio_region_create(dev->m_region);
110
111         if (result) {
112                 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
113                         __func__, __LINE__);
114                 result = -EPERM;
115                 goto fail_mmio_region;
116         }
117
118         dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
119                 __LINE__, dev->m_region->lpar_addr);
120
121         result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
122
123         if (result) {
124                 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
125                         __func__, __LINE__, virq);
126                 result = -EPERM;
127                 goto fail_irq;
128         }
129
130         dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
131
132         hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core));
133
134         if (!hcd) {
135                 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
136                         __LINE__);
137                 result = -ENOMEM;
138                 goto fail_create_hcd;
139         }
140
141         hcd->rsrc_start = dev->m_region->lpar_addr;
142         hcd->rsrc_len = dev->m_region->len;
143
144         if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
145                 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
146                         __func__, __LINE__);
147
148         hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
149
150         if (!hcd->regs) {
151                 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
152                         __LINE__);
153                 result = -EPERM;
154                 goto fail_ioremap;
155         }
156
157         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
158                 (unsigned long)hcd->rsrc_start);
159         dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
160                 (unsigned long)hcd->rsrc_len);
161         dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
162                 (unsigned long)hcd->regs);
163         dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
164                 (unsigned long)virq);
165
166         ps3_system_bus_set_driver_data(dev, hcd);
167
168         result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
169
170         if (result) {
171                 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
172                         __func__, __LINE__, result);
173                 goto fail_add_hcd;
174         }
175
176         return result;
177
178 fail_add_hcd:
179         iounmap(hcd->regs);
180 fail_ioremap:
181         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
182         usb_put_hcd(hcd);
183 fail_create_hcd:
184         ps3_io_irq_destroy(virq);
185 fail_irq:
186         ps3_free_mmio_region(dev->m_region);
187 fail_mmio_region:
188         ps3_dma_region_free(dev->d_region);
189 fail_dma_region:
190         ps3_close_hv_device(dev);
191 fail_open:
192 fail_start:
193         return result;
194 }
195
196 static int ps3_ohci_remove (struct ps3_system_bus_device *dev)
197 {
198         unsigned int tmp;
199         struct usb_hcd *hcd =
200                 (struct usb_hcd *)ps3_system_bus_get_driver_data(dev);
201
202         BUG_ON(!hcd);
203
204         dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
205         dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
206
207         tmp = hcd->irq;
208
209         usb_remove_hcd(hcd);
210
211         ps3_system_bus_set_driver_data(dev, NULL);
212
213         BUG_ON(!hcd->regs);
214         iounmap(hcd->regs);
215
216         release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
217         usb_put_hcd(hcd);
218
219         ps3_io_irq_destroy(tmp);
220         ps3_free_mmio_region(dev->m_region);
221
222         ps3_dma_region_free(dev->d_region);
223         ps3_close_hv_device(dev);
224
225         return 0;
226 }
227
228 static int ps3_ohci_driver_register(struct ps3_system_bus_driver *drv)
229 {
230         return firmware_has_feature(FW_FEATURE_PS3_LV1)
231                 ? ps3_system_bus_driver_register(drv)
232                 : 0;
233 }
234
235 static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv)
236 {
237         if (firmware_has_feature(FW_FEATURE_PS3_LV1))
238                 ps3_system_bus_driver_unregister(drv);
239 }
240
241 MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI);
242
243 static struct ps3_system_bus_driver ps3_ohci_driver = {
244         .core.name = "ps3-ohci-driver",
245         .core.owner = THIS_MODULE,
246         .match_id = PS3_MATCH_ID_OHCI,
247         .probe = ps3_ohci_probe,
248         .remove = ps3_ohci_remove,
249         .shutdown = ps3_ohci_remove,
250 };