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/ps3.h>
22
23static int ps3_ohci_hc_reset(struct usb_hcd *hcd)
24{
25	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
26
27	ohci->flags |= OHCI_QUIRK_BE_MMIO;
28	ohci_hcd_init(ohci);
29	return ohci_init(ohci);
30}
31
32static int __devinit ps3_ohci_hc_start(struct usb_hcd *hcd)
33{
34	int result;
35	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
36
37	/* Handle root hub init quirk in spider south bridge. */
38	/* Also set PwrOn2PwrGood to 0x7f (254ms). */
39
40	ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM,
41		&ohci->regs->roothub.a);
42	ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b);
43
44	result = ohci_run(ohci);
45
46	if (result < 0) {
47		err("can't start %s", hcd->self.bus_name);
48		ohci_stop(hcd);
49	}
50
51	return result;
52}
53
54static const struct hc_driver ps3_ohci_hc_driver = {
55	.description		= hcd_name,
56	.product_desc		= "PS3 OHCI Host Controller",
57	.hcd_priv_size		= sizeof(struct ohci_hcd),
58	.irq			= ohci_irq,
59	.flags			= HCD_MEMORY | HCD_USB11,
60	.reset			= ps3_ohci_hc_reset,
61	.start			= ps3_ohci_hc_start,
62	.stop			= ohci_stop,
63	.shutdown		= ohci_shutdown,
64	.urb_enqueue		= ohci_urb_enqueue,
65	.urb_dequeue		= ohci_urb_dequeue,
66	.endpoint_disable	= ohci_endpoint_disable,
67	.get_frame_number	= ohci_get_frame,
68	.hub_status_data	= ohci_hub_status_data,
69	.hub_control		= ohci_hub_control,
70	.hub_irq_enable		= ohci_rhsc_enable,
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
78static int ps3_ohci_sb_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_32BIT_MASK;
84
85	if (usb_disabled()) {
86		result = -ENODEV;
87		goto fail_start;
88	}
89
90	result = ps3_mmio_region_create(dev->m_region);
91
92	if (result) {
93		dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
94			__func__, __LINE__);
95		result = -EPERM;
96		goto fail_mmio;
97	}
98
99	dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
100		__LINE__, dev->m_region->lpar_addr);
101
102	result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
103
104	if (result) {
105		dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
106			__func__, __LINE__, virq);
107		result = -EPERM;
108		goto fail_irq;
109	}
110
111	dev->core.power.power_state = PMSG_ON;
112	dev->core.dma_mask = &dummy_mask;
113
114	hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev->core.bus_id);
115
116	if (!hcd) {
117		dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
118			__LINE__);
119		result = -ENOMEM;
120		goto fail_create_hcd;
121	}
122
123	hcd->rsrc_start = dev->m_region->lpar_addr;
124	hcd->rsrc_len = dev->m_region->len;
125	hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
126
127	if (!hcd->regs) {
128		dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
129			__LINE__);
130		result = -EPERM;
131		goto fail_ioremap;
132	}
133
134	dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
135		(unsigned long)hcd->rsrc_start);
136	dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len   %lxh\n", __func__, __LINE__,
137		(unsigned long)hcd->rsrc_len);
138	dev_dbg(&dev->core, "%s:%d: hcd->regs       %lxh\n", __func__, __LINE__,
139		(unsigned long)hcd->regs);
140	dev_dbg(&dev->core, "%s:%d: virq            %lu\n", __func__, __LINE__,
141		(unsigned long)virq);
142
143	ps3_system_bus_set_driver_data(dev, hcd);
144
145	result = usb_add_hcd(hcd, virq, IRQF_DISABLED);
146
147	if (result) {
148		dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
149			__func__, __LINE__, result);
150		goto fail_add_hcd;
151	}
152
153	return result;
154
155fail_add_hcd:
156	iounmap(hcd->regs);
157fail_ioremap:
158	usb_put_hcd(hcd);
159fail_create_hcd:
160	ps3_io_irq_destroy(virq);
161fail_irq:
162	ps3_free_mmio_region(dev->m_region);
163fail_mmio:
164fail_start:
165	return result;
166}
167
168static int ps3_ohci_sb_remove (struct ps3_system_bus_device *dev)
169{
170	struct usb_hcd *hcd =
171		(struct usb_hcd *)ps3_system_bus_get_driver_data(dev);
172
173	usb_put_hcd(hcd);
174	ps3_system_bus_set_driver_data(dev, NULL);
175
176	return 0;
177}
178
179MODULE_ALIAS("ps3-ohci");
180
181static struct ps3_system_bus_driver ps3_ohci_sb_driver = {
182	.match_id = PS3_MATCH_ID_OHCI,
183	.core = {
184		.name = "ps3-ohci-driver",
185	},
186	.probe = ps3_ohci_sb_probe,
187	.remove = ps3_ohci_sb_remove,
188};
189