xref: /linux/drivers/usb/host/ohci-ps3.c (revision 26b0d14106954ae46d2f4f7eec3481828a210f7d)
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 
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 
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 		dev_err(hcd->self.controller, "can't start %s\n",
49 			hcd->self.bus_name);
50 		ohci_stop(hcd);
51 	}
52 
53 	return result;
54 }
55 
56 static const struct hc_driver ps3_ohci_hc_driver = {
57 	.description		= hcd_name,
58 	.product_desc		= "PS3 OHCI Host Controller",
59 	.hcd_priv_size		= sizeof(struct ohci_hcd),
60 	.irq			= ohci_irq,
61 	.flags			= HCD_MEMORY | HCD_USB11,
62 	.reset			= ps3_ohci_hc_reset,
63 	.start			= ps3_ohci_hc_start,
64 	.stop			= ohci_stop,
65 	.shutdown		= ohci_shutdown,
66 	.urb_enqueue		= ohci_urb_enqueue,
67 	.urb_dequeue		= ohci_urb_dequeue,
68 	.endpoint_disable	= ohci_endpoint_disable,
69 	.get_frame_number	= ohci_get_frame,
70 	.hub_status_data	= ohci_hub_status_data,
71 	.hub_control		= ohci_hub_control,
72 	.start_port_reset	= ohci_start_port_reset,
73 #if defined(CONFIG_PM)
74 	.bus_suspend 		= ohci_bus_suspend,
75 	.bus_resume 		= ohci_bus_resume,
76 #endif
77 };
78 
79 static int __devinit ps3_ohci_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_BIT_MASK(32);
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: %s\n",
95 			__func__, __LINE__, ps3_result(result));
96 		result = -EPERM;
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_ohci_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, 0);
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_ohci_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 	ohci_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 __init ps3_ohci_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_ohci_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_OHCI);
242 
243 static struct ps3_system_bus_driver ps3_ohci_driver = {
244 	.core.name = "ps3-ohci-driver",
245 	.core.owner = THIS_MODULE,
246 	.match_id = PS3_MATCH_ID_OHCI,
247 	.probe = ps3_ohci_probe,
248 	.remove = ps3_ohci_remove,
249 	.shutdown = ps3_ohci_remove,
250 };
251