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
ps3_ehci_hc_reset(struct usb_hcd * hcd)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 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
80 };
81
ps3_ehci_probe(struct ps3_system_bus_device * dev)82 static int __devinit ps3_ehci_probe(struct ps3_system_bus_device *dev)
83 {
84 int result;
85 struct usb_hcd *hcd;
86 unsigned int virq;
87 static u64 dummy_mask = DMA_BIT_MASK(32);
88
89 if (usb_disabled()) {
90 result = -ENODEV;
91 goto fail_start;
92 }
93
94 result = ps3_open_hv_device(dev);
95
96 if (result) {
97 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n",
98 __func__, __LINE__);
99 goto fail_open;
100 }
101
102 result = ps3_dma_region_create(dev->d_region);
103
104 if (result) {
105 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
106 "(%d)\n", __func__, __LINE__, result);
107 BUG_ON("check region type");
108 goto fail_dma_region;
109 }
110
111 result = ps3_mmio_region_create(dev->m_region);
112
113 if (result) {
114 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
115 __func__, __LINE__);
116 result = -EPERM;
117 goto fail_mmio_region;
118 }
119
120 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
121 __LINE__, dev->m_region->lpar_addr);
122
123 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
124
125 if (result) {
126 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
127 __func__, __LINE__, virq);
128 result = -EPERM;
129 goto fail_irq;
130 }
131
132 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
133
134 hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev_name(&dev->core));
135
136 if (!hcd) {
137 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
138 __LINE__);
139 result = -ENOMEM;
140 goto fail_create_hcd;
141 }
142
143 hcd->rsrc_start = dev->m_region->lpar_addr;
144 hcd->rsrc_len = dev->m_region->len;
145
146 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
147 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
148 __func__, __LINE__);
149
150 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
151
152 if (!hcd->regs) {
153 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
154 __LINE__);
155 result = -EPERM;
156 goto fail_ioremap;
157 }
158
159 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
160 (unsigned long)hcd->rsrc_start);
161 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__,
162 (unsigned long)hcd->rsrc_len);
163 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__,
164 (unsigned long)hcd->regs);
165 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__,
166 (unsigned long)virq);
167
168 ps3_system_bus_set_drvdata(dev, hcd);
169
170 result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
171
172 if (result) {
173 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
174 __func__, __LINE__, result);
175 goto fail_add_hcd;
176 }
177
178 return result;
179
180 fail_add_hcd:
181 iounmap(hcd->regs);
182 fail_ioremap:
183 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
184 usb_put_hcd(hcd);
185 fail_create_hcd:
186 ps3_io_irq_destroy(virq);
187 fail_irq:
188 ps3_free_mmio_region(dev->m_region);
189 fail_mmio_region:
190 ps3_dma_region_free(dev->d_region);
191 fail_dma_region:
192 ps3_close_hv_device(dev);
193 fail_open:
194 fail_start:
195 return result;
196 }
197
ps3_ehci_remove(struct ps3_system_bus_device * dev)198 static int ps3_ehci_remove(struct ps3_system_bus_device *dev)
199 {
200 unsigned int tmp;
201 struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);
202
203 BUG_ON(!hcd);
204
205 dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
206 dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
207
208 tmp = hcd->irq;
209
210 ehci_shutdown(hcd);
211 usb_remove_hcd(hcd);
212
213 ps3_system_bus_set_drvdata(dev, NULL);
214
215 BUG_ON(!hcd->regs);
216 iounmap(hcd->regs);
217
218 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
219 usb_put_hcd(hcd);
220
221 ps3_io_irq_destroy(tmp);
222 ps3_free_mmio_region(dev->m_region);
223
224 ps3_dma_region_free(dev->d_region);
225 ps3_close_hv_device(dev);
226
227 return 0;
228 }
229
ps3_ehci_driver_register(struct ps3_system_bus_driver * drv)230 static int __init ps3_ehci_driver_register(struct ps3_system_bus_driver *drv)
231 {
232 return firmware_has_feature(FW_FEATURE_PS3_LV1)
233 ? ps3_system_bus_driver_register(drv)
234 : 0;
235 }
236
ps3_ehci_driver_unregister(struct ps3_system_bus_driver * drv)237 static void ps3_ehci_driver_unregister(struct ps3_system_bus_driver *drv)
238 {
239 if (firmware_has_feature(FW_FEATURE_PS3_LV1))
240 ps3_system_bus_driver_unregister(drv);
241 }
242
243 MODULE_ALIAS(PS3_MODULE_ALIAS_EHCI);
244
245 static struct ps3_system_bus_driver ps3_ehci_driver = {
246 .core.name = "ps3-ehci-driver",
247 .core.owner = THIS_MODULE,
248 .match_id = PS3_MATCH_ID_EHCI,
249 .probe = ps3_ehci_probe,
250 .remove = ps3_ehci_remove,
251 .shutdown = ps3_ehci_remove,
252 };
253