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
ps3_ohci_hc_reset(struct usb_hcd * hcd)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
ps3_ohci_hc_start(struct usb_hcd * hcd)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 .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
ps3_ohci_probe(struct ps3_system_bus_device * dev)78 static int __devinit ps3_ohci_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_BIT_MASK(32);
84
85 if (usb_disabled()) {
86 result = -ENODEV;
87 goto fail_start;
88 }
89
90 result = ps3_open_hv_device(dev);
91
92 if (result) {
93 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n",
94 __func__, __LINE__, ps3_result(result));
95 result = -EPERM;
96 goto fail_open;
97 }
98
99 result = ps3_dma_region_create(dev->d_region);
100
101 if (result) {
102 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
103 "(%d)\n", __func__, __LINE__, result);
104 BUG_ON("check region type");
105 goto fail_dma_region;
106 }
107
108 result = ps3_mmio_region_create(dev->m_region);
109
110 if (result) {
111 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
112 __func__, __LINE__);
113 result = -EPERM;
114 goto fail_mmio_region;
115 }
116
117 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
118 __LINE__, dev->m_region->lpar_addr);
119
120 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
121
122 if (result) {
123 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
124 __func__, __LINE__, virq);
125 result = -EPERM;
126 goto fail_irq;
127 }
128
129 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
130
131 hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core));
132
133 if (!hcd) {
134 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
135 __LINE__);
136 result = -ENOMEM;
137 goto fail_create_hcd;
138 }
139
140 hcd->rsrc_start = dev->m_region->lpar_addr;
141 hcd->rsrc_len = dev->m_region->len;
142
143 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
144 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
145 __func__, __LINE__);
146
147 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
148
149 if (!hcd->regs) {
150 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
151 __LINE__);
152 result = -EPERM;
153 goto fail_ioremap;
154 }
155
156 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
157 (unsigned long)hcd->rsrc_start);
158 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__,
159 (unsigned long)hcd->rsrc_len);
160 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__,
161 (unsigned long)hcd->regs);
162 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__,
163 (unsigned long)virq);
164
165 ps3_system_bus_set_drvdata(dev, hcd);
166
167 result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
168
169 if (result) {
170 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
171 __func__, __LINE__, result);
172 goto fail_add_hcd;
173 }
174
175 return result;
176
177 fail_add_hcd:
178 iounmap(hcd->regs);
179 fail_ioremap:
180 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
181 usb_put_hcd(hcd);
182 fail_create_hcd:
183 ps3_io_irq_destroy(virq);
184 fail_irq:
185 ps3_free_mmio_region(dev->m_region);
186 fail_mmio_region:
187 ps3_dma_region_free(dev->d_region);
188 fail_dma_region:
189 ps3_close_hv_device(dev);
190 fail_open:
191 fail_start:
192 return result;
193 }
194
ps3_ohci_remove(struct ps3_system_bus_device * dev)195 static int ps3_ohci_remove(struct ps3_system_bus_device *dev)
196 {
197 unsigned int tmp;
198 struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);
199
200 BUG_ON(!hcd);
201
202 dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
203 dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
204
205 tmp = hcd->irq;
206
207 ohci_shutdown(hcd);
208 usb_remove_hcd(hcd);
209
210 ps3_system_bus_set_drvdata(dev, NULL);
211
212 BUG_ON(!hcd->regs);
213 iounmap(hcd->regs);
214
215 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
216 usb_put_hcd(hcd);
217
218 ps3_io_irq_destroy(tmp);
219 ps3_free_mmio_region(dev->m_region);
220
221 ps3_dma_region_free(dev->d_region);
222 ps3_close_hv_device(dev);
223
224 return 0;
225 }
226
ps3_ohci_driver_register(struct ps3_system_bus_driver * drv)227 static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv)
228 {
229 return firmware_has_feature(FW_FEATURE_PS3_LV1)
230 ? ps3_system_bus_driver_register(drv)
231 : 0;
232 }
233
ps3_ohci_driver_unregister(struct ps3_system_bus_driver * drv)234 static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv)
235 {
236 if (firmware_has_feature(FW_FEATURE_PS3_LV1))
237 ps3_system_bus_driver_unregister(drv);
238 }
239
240 MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI);
241
242 static struct ps3_system_bus_driver ps3_ohci_driver = {
243 .core.name = "ps3-ohci-driver",
244 .core.owner = THIS_MODULE,
245 .match_id = PS3_MATCH_ID_OHCI,
246 .probe = ps3_ohci_probe,
247 .remove = ps3_ohci_remove,
248 .shutdown = ps3_ohci_remove,
249 };
250