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 .get_frame_number = ehci_get_frame,
69 .hub_status_data = ehci_hub_status_data,
70 .hub_control = ehci_hub_control,
71 #if defined(CONFIG_PM)
72 .bus_suspend = ehci_bus_suspend,
73 .bus_resume = ehci_bus_resume,
74 #endif
75 .relinquish_port = ehci_relinquish_port,
76 .port_handed_over = ehci_port_handed_over,
77 };
78
ps3_ehci_probe(struct ps3_system_bus_device * dev)79 static int ps3_ehci_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\n",
95 __func__, __LINE__);
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_ehci_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_driver_data(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_ehci_remove(struct ps3_system_bus_device * dev)195 static int ps3_ehci_remove(struct ps3_system_bus_device *dev)
196 {
197 unsigned int tmp;
198 struct usb_hcd *hcd =
199 (struct usb_hcd *)ps3_system_bus_get_driver_data(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_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
ps3_ehci_driver_register(struct ps3_system_bus_driver * drv)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
ps3_ehci_driver_unregister(struct ps3_system_bus_driver * drv)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 };
251