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ad75a410 GL |
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/ps3.h> | |
22 | ||
23 | static int ps3_ehci_hc_reset(struct usb_hcd *hcd) | |
24 | { | |
25 | int result; | |
26 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
27 | ||
28 | ehci->big_endian_mmio = 1; | |
29 | ||
30 | ehci->caps = hcd->regs; | |
31 | ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci, | |
32 | &ehci->caps->hc_capbase)); | |
33 | ||
34 | dbg_hcs_params(ehci, "reset"); | |
35 | dbg_hcc_params(ehci, "reset"); | |
36 | ||
37 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); | |
38 | ||
39 | result = ehci_halt(ehci); | |
40 | ||
41 | if (result) | |
42 | return result; | |
43 | ||
44 | result = ehci_init(hcd); | |
45 | ||
46 | if (result) | |
47 | return result; | |
48 | ||
49 | ehci_port_power(ehci, 0); | |
50 | ||
51 | return result; | |
52 | } | |
53 | ||
54 | static const struct hc_driver ps3_ehci_hc_driver = { | |
55 | .description = hcd_name, | |
56 | .product_desc = "PS3 EHCI Host Controller", | |
57 | .hcd_priv_size = sizeof(struct ehci_hcd), | |
58 | .irq = ehci_irq, | |
59 | .flags = HCD_MEMORY | HCD_USB2, | |
60 | .reset = ps3_ehci_hc_reset, | |
61 | .start = ehci_run, | |
62 | .stop = ehci_stop, | |
63 | .shutdown = ehci_shutdown, | |
64 | .urb_enqueue = ehci_urb_enqueue, | |
65 | .urb_dequeue = ehci_urb_dequeue, | |
66 | .endpoint_disable = ehci_endpoint_disable, | |
67 | .get_frame_number = ehci_get_frame, | |
68 | .hub_status_data = ehci_hub_status_data, | |
69 | .hub_control = ehci_hub_control, | |
70 | #if defined(CONFIG_PM) | |
71 | .bus_suspend = ehci_bus_suspend, | |
72 | .bus_resume = ehci_bus_resume, | |
73 | #endif | |
74 | }; | |
75 | ||
76 | #if !defined(DEBUG) | |
77 | #undef dev_dbg | |
78 | static inline int __attribute__ ((format (printf, 2, 3))) dev_dbg( | |
79 | const struct device *_dev, const char *fmt, ...) {return 0;} | |
80 | #endif | |
81 | ||
82 | ||
83 | static int ps3_ehci_sb_probe(struct ps3_system_bus_device *dev) | |
84 | { | |
85 | int result; | |
86 | struct usb_hcd *hcd; | |
87 | unsigned int virq; | |
88 | static u64 dummy_mask = DMA_32BIT_MASK; | |
89 | ||
90 | if (usb_disabled()) { | |
91 | result = -ENODEV; | |
92 | goto fail_start; | |
93 | } | |
94 | ||
95 | result = ps3_mmio_region_create(dev->m_region); | |
96 | ||
97 | if (result) { | |
98 | dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", | |
99 | __func__, __LINE__); | |
100 | result = -EPERM; | |
101 | goto fail_mmio; | |
102 | } | |
103 | ||
104 | dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, | |
105 | __LINE__, dev->m_region->lpar_addr); | |
106 | ||
107 | result = ps3_alloc_io_irq(dev->interrupt_id, &virq); | |
108 | ||
109 | if (result) { | |
110 | dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", | |
111 | __func__, __LINE__, virq); | |
112 | result = -EPERM; | |
113 | goto fail_irq; | |
114 | } | |
115 | ||
116 | dev->core.power.power_state = PMSG_ON; | |
117 | dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ | |
118 | ||
119 | hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id); | |
120 | ||
121 | if (!hcd) { | |
122 | dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, | |
123 | __LINE__); | |
124 | result = -ENOMEM; | |
125 | goto fail_create_hcd; | |
126 | } | |
127 | ||
128 | hcd->rsrc_start = dev->m_region->lpar_addr; | |
129 | hcd->rsrc_len = dev->m_region->len; | |
130 | hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); | |
131 | ||
132 | if (!hcd->regs) { | |
133 | dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, | |
134 | __LINE__); | |
135 | result = -EPERM; | |
136 | goto fail_ioremap; | |
137 | } | |
138 | ||
139 | dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, | |
140 | (unsigned long)hcd->rsrc_start); | |
141 | dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, | |
142 | (unsigned long)hcd->rsrc_len); | |
143 | dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, | |
144 | (unsigned long)hcd->regs); | |
145 | dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, | |
146 | (unsigned long)virq); | |
147 | ||
148 | ps3_system_bus_set_driver_data(dev, hcd); | |
149 | ||
150 | result = usb_add_hcd(hcd, virq, IRQF_DISABLED); | |
151 | ||
152 | if (result) { | |
153 | dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", | |
154 | __func__, __LINE__, result); | |
155 | goto fail_add_hcd; | |
156 | } | |
157 | ||
158 | return result; | |
159 | ||
160 | fail_add_hcd: | |
161 | iounmap(hcd->regs); | |
162 | fail_ioremap: | |
163 | usb_put_hcd(hcd); | |
164 | fail_create_hcd: | |
165 | ps3_free_io_irq(virq); | |
166 | fail_irq: | |
167 | ps3_free_mmio_region(dev->m_region); | |
168 | fail_mmio: | |
169 | fail_start: | |
170 | return result; | |
171 | } | |
172 | ||
173 | static int ps3_ehci_sb_remove(struct ps3_system_bus_device *dev) | |
174 | { | |
175 | struct usb_hcd *hcd = | |
176 | (struct usb_hcd *)ps3_system_bus_get_driver_data(dev); | |
177 | ||
178 | usb_put_hcd(hcd); | |
179 | ps3_system_bus_set_driver_data(dev, NULL); | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
184 | MODULE_ALIAS("ps3-ehci"); | |
185 | ||
186 | static struct ps3_system_bus_driver ps3_ehci_sb_driver = { | |
187 | .match_id = PS3_MATCH_ID_EHCI, | |
188 | .core = { | |
189 | .name = "ps3-ehci-driver", | |
190 | }, | |
191 | .probe = ps3_ehci_sb_probe, | |
192 | .remove = ps3_ehci_sb_remove, | |
193 | }; |