1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * PS3 OHCI Host Controller driver
4 *
5 * Copyright (C) 2006 Sony Computer Entertainment Inc.
6 * Copyright 2006 Sony Corp.
7 */
8
9 #include <asm/firmware.h>
10 #include <asm/ps3.h>
11
ps3_ohci_hc_reset(struct usb_hcd * hcd)12 static int ps3_ohci_hc_reset(struct usb_hcd *hcd)
13 {
14 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
15
16 ohci->flags |= OHCI_QUIRK_BE_MMIO;
17 ohci_hcd_init(ohci);
18 return ohci_init(ohci);
19 }
20
ps3_ohci_hc_start(struct usb_hcd * hcd)21 static int ps3_ohci_hc_start(struct usb_hcd *hcd)
22 {
23 int result;
24 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
25
26 /* Handle root hub init quirk in spider south bridge. */
27 /* Also set PwrOn2PwrGood to 0x7f (254ms). */
28
29 ohci_writel(ohci, 0x7f000000 | RH_A_PSM | RH_A_OCPM,
30 &ohci->regs->roothub.a);
31 ohci_writel(ohci, 0x00060000, &ohci->regs->roothub.b);
32
33 result = ohci_run(ohci);
34
35 if (result < 0) {
36 dev_err(hcd->self.controller, "can't start %s\n",
37 hcd->self.bus_name);
38 ohci_stop(hcd);
39 }
40
41 return result;
42 }
43
44 static const struct hc_driver ps3_ohci_hc_driver = {
45 .description = hcd_name,
46 .product_desc = "PS3 OHCI Host Controller",
47 .hcd_priv_size = sizeof(struct ohci_hcd),
48 .irq = ohci_irq,
49 .flags = HCD_MEMORY | HCD_DMA | HCD_USB11,
50 .reset = ps3_ohci_hc_reset,
51 .start = ps3_ohci_hc_start,
52 .stop = ohci_stop,
53 .shutdown = ohci_shutdown,
54 .urb_enqueue = ohci_urb_enqueue,
55 .urb_dequeue = ohci_urb_dequeue,
56 .endpoint_disable = ohci_endpoint_disable,
57 .get_frame_number = ohci_get_frame,
58 .hub_status_data = ohci_hub_status_data,
59 .hub_control = ohci_hub_control,
60 .start_port_reset = ohci_start_port_reset,
61 #if defined(CONFIG_PM)
62 .bus_suspend = ohci_bus_suspend,
63 .bus_resume = ohci_bus_resume,
64 #endif
65 };
66
ps3_ohci_probe(struct ps3_system_bus_device * dev)67 static int ps3_ohci_probe(struct ps3_system_bus_device *dev)
68 {
69 int result;
70 struct usb_hcd *hcd;
71 unsigned int virq;
72 static u64 dummy_mask;
73
74 if (usb_disabled()) {
75 result = -ENODEV;
76 goto fail_start;
77 }
78
79 result = ps3_open_hv_device(dev);
80
81 if (result) {
82 dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed: %s\n",
83 __func__, __LINE__, ps3_result(result));
84 result = -EPERM;
85 goto fail_open;
86 }
87
88 result = ps3_dma_region_create(dev->d_region);
89
90 if (result) {
91 dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: "
92 "(%d)\n", __func__, __LINE__, result);
93 BUG_ON("check region type");
94 goto fail_dma_region;
95 }
96
97 result = ps3_mmio_region_create(dev->m_region);
98
99 if (result) {
100 dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n",
101 __func__, __LINE__);
102 result = -EPERM;
103 goto fail_mmio_region;
104 }
105
106 dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__,
107 __LINE__, dev->m_region->lpar_addr);
108
109 result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq);
110
111 if (result) {
112 dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n",
113 __func__, __LINE__, virq);
114 result = -EPERM;
115 goto fail_irq;
116 }
117
118 dummy_mask = DMA_BIT_MASK(32);
119 dev->core.dma_mask = &dummy_mask;
120 dma_set_coherent_mask(&dev->core, dummy_mask);
121
122 hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core));
123
124 if (!hcd) {
125 dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__,
126 __LINE__);
127 result = -ENOMEM;
128 goto fail_create_hcd;
129 }
130
131 hcd->rsrc_start = dev->m_region->lpar_addr;
132 hcd->rsrc_len = dev->m_region->len;
133
134 if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name))
135 dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n",
136 __func__, __LINE__);
137
138 hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len);
139
140 if (!hcd->regs) {
141 dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__,
142 __LINE__);
143 result = -EPERM;
144 goto fail_ioremap;
145 }
146
147 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__,
148 (unsigned long)hcd->rsrc_start);
149 dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__,
150 (unsigned long)hcd->rsrc_len);
151 dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__,
152 (unsigned long)hcd->regs);
153 dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__,
154 (unsigned long)virq);
155
156 ps3_system_bus_set_drvdata(dev, hcd);
157
158 result = usb_add_hcd(hcd, virq, 0);
159
160 if (result) {
161 dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n",
162 __func__, __LINE__, result);
163 goto fail_add_hcd;
164 }
165
166 device_wakeup_enable(hcd->self.controller);
167 return result;
168
169 fail_add_hcd:
170 iounmap(hcd->regs);
171 fail_ioremap:
172 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
173 usb_put_hcd(hcd);
174 fail_create_hcd:
175 ps3_io_irq_destroy(virq);
176 fail_irq:
177 ps3_free_mmio_region(dev->m_region);
178 fail_mmio_region:
179 ps3_dma_region_free(dev->d_region);
180 fail_dma_region:
181 ps3_close_hv_device(dev);
182 fail_open:
183 fail_start:
184 return result;
185 }
186
ps3_ohci_remove(struct ps3_system_bus_device * dev)187 static int ps3_ohci_remove(struct ps3_system_bus_device *dev)
188 {
189 unsigned int tmp;
190 struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev);
191
192 BUG_ON(!hcd);
193
194 dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs);
195 dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq);
196
197 tmp = hcd->irq;
198
199 ohci_shutdown(hcd);
200 usb_remove_hcd(hcd);
201
202 ps3_system_bus_set_drvdata(dev, NULL);
203
204 BUG_ON(!hcd->regs);
205 iounmap(hcd->regs);
206
207 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
208 usb_put_hcd(hcd);
209
210 ps3_io_irq_destroy(tmp);
211 ps3_free_mmio_region(dev->m_region);
212
213 ps3_dma_region_free(dev->d_region);
214 ps3_close_hv_device(dev);
215
216 return 0;
217 }
218
ps3_ohci_driver_register(struct ps3_system_bus_driver * drv)219 static int __init ps3_ohci_driver_register(struct ps3_system_bus_driver *drv)
220 {
221 return firmware_has_feature(FW_FEATURE_PS3_LV1)
222 ? ps3_system_bus_driver_register(drv)
223 : 0;
224 }
225
ps3_ohci_driver_unregister(struct ps3_system_bus_driver * drv)226 static void ps3_ohci_driver_unregister(struct ps3_system_bus_driver *drv)
227 {
228 if (firmware_has_feature(FW_FEATURE_PS3_LV1))
229 ps3_system_bus_driver_unregister(drv);
230 }
231
232 MODULE_ALIAS(PS3_MODULE_ALIAS_OHCI);
233
234 static struct ps3_system_bus_driver ps3_ohci_driver = {
235 .core.name = "ps3-ohci-driver",
236 .core.owner = THIS_MODULE,
237 .match_id = PS3_MATCH_ID_OHCI,
238 .probe = ps3_ohci_probe,
239 .remove = ps3_ohci_remove,
240 .shutdown = ps3_ohci_remove,
241 };
242