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_setup_insnreg(struct ehci_hcd * ehci)24 static void ps3_ehci_setup_insnreg(struct ehci_hcd *ehci)
25 {
26 /* PS3 HC internal setup register offsets. */
27
28 enum ps3_ehci_hc_insnreg {
29 ps3_ehci_hc_insnreg01 = 0x084,
30 ps3_ehci_hc_insnreg02 = 0x088,
31 ps3_ehci_hc_insnreg03 = 0x08c,
32 };
33
34 /* PS3 EHCI HC errata fix 316 - The PS3 EHCI HC will reset its
35 * internal INSNREGXX setup regs back to the chip default values
36 * on Host Controller Reset (CMD_RESET) or Light Host Controller
37 * Reset (CMD_LRESET). The work-around for this is for the HC
38 * driver to re-initialise these regs when ever the HC is reset.
39 */
40
41 /* Set burst transfer counts to 256 out, 32 in. */
42
43 writel_be(0x01000020, (void __iomem *)ehci->regs +
44 ps3_ehci_hc_insnreg01);
45
46 /* Enable burst transfer counts. */
47
48 writel_be(0x00000001, (void __iomem *)ehci->regs +
49 ps3_ehci_hc_insnreg03);
50 }
51
ps3_ehci_hc_reset(struct usb_hcd * hcd)52 static int ps3_ehci_hc_reset(struct usb_hcd *hcd)
53 {
54 int result;
55 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
56
57 ehci->big_endian_mmio = 1;
58
59 ehci->caps = hcd->regs;
60 ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci,
61 &ehci->caps->hc_capbase));
62
63 dbg_hcs_params(ehci, "reset");
64 dbg_hcc_params(ehci, "reset");
65
66 ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
67
68 result = ehci_halt(ehci);
69
70 if (result)
71 return result;
72
73 result = ehci_init(hcd);
74
75 if (result)
76 return result;
77
78 ehci_reset(ehci);
79
80 ps3_ehci_setup_insnreg(ehci);
81
82 return result;
83 }
84
85 static const struct hc_driver ps3_ehci_hc_driver = {
86 .description = hcd_name,
87 .product_desc = "PS3 EHCI Host Controller",
88 .hcd_priv_size = sizeof(struct ehci_hcd),
89 .irq = ehci_irq,
90 .flags = HCD_MEMORY | HCD_USB2,
91 .reset = ps3_ehci_hc_reset,
92 .start = ehci_run,
93 .stop = ehci_stop,
94 .shutdown = ehci_shutdown,
95 .urb_enqueue = ehci_urb_enqueue,
96 .urb_dequeue = ehci_urb_dequeue,
97 .endpoint_disable = ehci_endpoint_disable,
98 .endpoint_reset = ehci_endpoint_reset,
99 .get_frame_number = ehci_get_frame,
100 .hub_status_data = ehci_hub_status_data,
101 .hub_control = ehci_hub_control,
102 #if defined(CONFIG_PM)
103 .bus_suspend = ehci_bus_suspend,
104 .bus_resume = ehci_bus_resume,
105 #endif
106 .relinquish_port = ehci_relinquish_port,
107 .port_handed_over = ehci_port_handed_over,
108
109 .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
110 };
111
ps3_ehci_probe(struct ps3_system_bus_device * dev)112 static int __devinit ps3_ehci_probe(struct ps3_system_bus_device *dev)
113 {
114 int result;
115 struct usb_hcd *hcd;
116 unsigned int virq;
117 static u64 dummy_mask = DMA_BIT_MASK(32);
118
119 if (usb_disabled()) {
120 result = -ENODEV;
121 goto fail_start;
122 }
123
124 result = ps3_open_hv_device(dev);
125
126 if (result) {
127 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n",
128 __func__, __LINE__);
129 goto fail_open;
130 }
131
132 result = ps3_dma_region_create(dev->d_region);
133
134 if (result) {
135 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
136 "(%d)\n", __func__, __LINE__, result);
137 BUG_ON("check region type");
138 goto fail_dma_region;
139 }
140
141 result = ps3_mmio_region_create(dev->m_region);
142
143 if (result) {
144 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
145 __func__, __LINE__);
146 result = -EPERM;
147 goto fail_mmio_region;
148 }
149
150 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
151 __LINE__, dev->m_region->lpar_addr);
152
153 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
154
155 if (result) {
156 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
157 __func__, __LINE__, virq);
158 result = -EPERM;
159 goto fail_irq;
160 }
161
162 dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */
163
164 hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev_name(&dev->core));
165
166 if (!hcd) {
167 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
168 __LINE__);
169 result = -ENOMEM;
170 goto fail_create_hcd;
171 }
172
173 hcd->rsrc_start = dev->m_region->lpar_addr;
174 hcd->rsrc_len = dev->m_region->len;
175
176 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
177 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
178 __func__, __LINE__);
179
180 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
181
182 if (!hcd->regs) {
183 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
184 __LINE__);
185 result = -EPERM;
186 goto fail_ioremap;
187 }
188
189 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
190 (unsigned long)hcd->rsrc_start);
191 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__,
192 (unsigned long)hcd->rsrc_len);
193 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__,
194 (unsigned long)hcd->regs);
195 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__,
196 (unsigned long)virq);
197
198 ps3_system_bus_set_drvdata(dev, hcd);
199
200 result = usb_add_hcd(hcd, virq, 0);
201
202 if (result) {
203 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
204 __func__, __LINE__, result);
205 goto fail_add_hcd;
206 }
207
208 return result;
209
210 fail_add_hcd:
211 iounmap(hcd->regs);
212 fail_ioremap:
213 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
214 usb_put_hcd(hcd);
215 fail_create_hcd:
216 ps3_io_irq_destroy(virq);
217 fail_irq:
218 ps3_free_mmio_region(dev->m_region);
219 fail_mmio_region:
220 ps3_dma_region_free(dev->d_region);
221 fail_dma_region:
222 ps3_close_hv_device(dev);
223 fail_open:
224 fail_start:
225 return result;
226 }
227
ps3_ehci_remove(struct ps3_system_bus_device * dev)228 static int ps3_ehci_remove(struct ps3_system_bus_device *dev)
229 {
230 unsigned int tmp;
231 struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);
232
233 BUG_ON(!hcd);
234
235 dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
236 dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
237
238 tmp = hcd->irq;
239
240 ehci_shutdown(hcd);
241 usb_remove_hcd(hcd);
242
243 ps3_system_bus_set_drvdata(dev, NULL);
244
245 BUG_ON(!hcd->regs);
246 iounmap(hcd->regs);
247
248 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
249 usb_put_hcd(hcd);
250
251 ps3_io_irq_destroy(tmp);
252 ps3_free_mmio_region(dev->m_region);
253
254 ps3_dma_region_free(dev->d_region);
255 ps3_close_hv_device(dev);
256
257 return 0;
258 }
259
ps3_ehci_driver_register(struct ps3_system_bus_driver * drv)260 static int __init ps3_ehci_driver_register(struct ps3_system_bus_driver *drv)
261 {
262 return firmware_has_feature(FW_FEATURE_PS3_LV1)
263 ? ps3_system_bus_driver_register(drv)
264 : 0;
265 }
266
ps3_ehci_driver_unregister(struct ps3_system_bus_driver * drv)267 static void ps3_ehci_driver_unregister(struct ps3_system_bus_driver *drv)
268 {
269 if (firmware_has_feature(FW_FEATURE_PS3_LV1))
270 ps3_system_bus_driver_unregister(drv);
271 }
272
273 MODULE_ALIAS(PS3_MODULE_ALIAS_EHCI);
274
275 static struct ps3_system_bus_driver ps3_ehci_driver = {
276 .core.name = "ps3-ehci-driver",
277 .core.owner = THIS_MODULE,
278 .match_id = PS3_MATCH_ID_EHCI,
279 .probe = ps3_ehci_probe,
280 .remove = ps3_ehci_remove,
281 .shutdown = ps3_ehci_remove,
282 };
283