Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6
[linux-2.6] / drivers / usb / host / ehci-ps3.c
1 /*
2  *  PS3 EHCI 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_ehci_hc_reset(struct usb_hcd *hcd)
25 {
26         int result;
27         struct ehci_hcd *ehci = hcd_to_ehci(hcd);
28
29         ehci->big_endian_mmio = 1;
30
31         ehci->caps = hcd->regs;
32         ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci,
33                 &ehci->caps->hc_capbase));
34
35         dbg_hcs_params(ehci, "reset");
36         dbg_hcc_params(ehci, "reset");
37
38         ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
39
40         result = ehci_halt(ehci);
41
42         if (result)
43                 return result;
44
45         result = ehci_init(hcd);
46
47         if (result)
48                 return result;
49
50         ehci_reset(ehci);
51
52         return result;
53 }
54
55 static const struct hc_driver ps3_ehci_hc_driver = {
56         .description            = hcd_name,
57         .product_desc           = "PS3 EHCI Host Controller",
58         .hcd_priv_size          = sizeof(struct ehci_hcd),
59         .irq                    = ehci_irq,
60         .flags                  = HCD_MEMORY | HCD_USB2,
61         .reset                  = ps3_ehci_hc_reset,
62         .start                  = ehci_run,
63         .stop                   = ehci_stop,
64         .shutdown               = ehci_shutdown,
65         .urb_enqueue            = ehci_urb_enqueue,
66         .urb_dequeue            = ehci_urb_dequeue,
67         .endpoint_disable       = ehci_endpoint_disable,
68         .endpoint_reset         = ehci_endpoint_reset,
69         .get_frame_number       = ehci_get_frame,
70         .hub_status_data        = ehci_hub_status_data,
71         .hub_control            = ehci_hub_control,
72 #if defined(CONFIG_PM)
73         .bus_suspend            = ehci_bus_suspend,
74         .bus_resume             = ehci_bus_resume,
75 #endif
76         .relinquish_port        = ehci_relinquish_port,
77         .port_handed_over       = ehci_port_handed_over,
78 };
79
80 static int ps3_ehci_probe(struct ps3_system_bus_device *dev)
81 {
82         int result;
83         struct usb_hcd *hcd;
84         unsigned int virq;
85         static u64 dummy_mask = DMA_BIT_MASK(32);
86
87         if (usb_disabled()) {
88                 result = -ENODEV;
89                 goto fail_start;
90         }
91
92         result = ps3_open_hv_device(dev);
93
94         if (result) {
95                 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n",
96                         __func__, __LINE__);
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_ehci_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_drvdata(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_ehci_remove(struct ps3_system_bus_device *dev)
197 {
198         unsigned int tmp;
199         struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);
200
201         BUG_ON(!hcd);
202
203         dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
204         dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
205
206         tmp = hcd->irq;
207
208         ehci_shutdown(hcd);
209         usb_remove_hcd(hcd);
210
211         ps3_system_bus_set_drvdata(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_ehci_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_ehci_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_EHCI);
242
243 static struct ps3_system_bus_driver ps3_ehci_driver = {
244         .core.name = "ps3-ehci-driver",
245         .core.owner = THIS_MODULE,
246         .match_id = PS3_MATCH_ID_EHCI,
247         .probe = ps3_ehci_probe,
248         .remove = ps3_ehci_remove,
249         .shutdown = ps3_ehci_remove,
250 };