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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0 |
ad75a410 GL |
2 | /* |
3 | * PS3 EHCI Host Controller driver | |
4 | * | |
5 | * Copyright (C) 2006 Sony Computer Entertainment Inc. | |
6 | * Copyright 2006 Sony Corp. | |
ad75a410 GL |
7 | */ |
8 | ||
7a4eb7fd | 9 | #include <asm/firmware.h> |
ad75a410 GL |
10 | #include <asm/ps3.h> |
11 | ||
9187bef2 GL |
12 | static void ps3_ehci_setup_insnreg(struct ehci_hcd *ehci) |
13 | { | |
14 | /* PS3 HC internal setup register offsets. */ | |
15 | ||
16 | enum ps3_ehci_hc_insnreg { | |
17 | ps3_ehci_hc_insnreg01 = 0x084, | |
18 | ps3_ehci_hc_insnreg02 = 0x088, | |
19 | ps3_ehci_hc_insnreg03 = 0x08c, | |
20 | }; | |
21 | ||
22 | /* PS3 EHCI HC errata fix 316 - The PS3 EHCI HC will reset its | |
23 | * internal INSNREGXX setup regs back to the chip default values | |
24 | * on Host Controller Reset (CMD_RESET) or Light Host Controller | |
25 | * Reset (CMD_LRESET). The work-around for this is for the HC | |
26 | * driver to re-initialise these regs when ever the HC is reset. | |
27 | */ | |
28 | ||
29 | /* Set burst transfer counts to 256 out, 32 in. */ | |
30 | ||
31 | writel_be(0x01000020, (void __iomem *)ehci->regs + | |
32 | ps3_ehci_hc_insnreg01); | |
33 | ||
34 | /* Enable burst transfer counts. */ | |
35 | ||
36 | writel_be(0x00000001, (void __iomem *)ehci->regs + | |
37 | ps3_ehci_hc_insnreg03); | |
38 | } | |
39 | ||
ad75a410 GL |
40 | static int ps3_ehci_hc_reset(struct usb_hcd *hcd) |
41 | { | |
42 | int result; | |
43 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
44 | ||
45 | ehci->big_endian_mmio = 1; | |
ad75a410 | 46 | ehci->caps = hcd->regs; |
ad75a410 | 47 | |
1a49e2ac | 48 | result = ehci_setup(hcd); |
ad75a410 GL |
49 | if (result) |
50 | return result; | |
51 | ||
9187bef2 GL |
52 | ps3_ehci_setup_insnreg(ehci); |
53 | ||
ad75a410 GL |
54 | return result; |
55 | } | |
56 | ||
57 | static const struct hc_driver ps3_ehci_hc_driver = { | |
58 | .description = hcd_name, | |
59 | .product_desc = "PS3 EHCI Host Controller", | |
60 | .hcd_priv_size = sizeof(struct ehci_hcd), | |
61 | .irq = ehci_irq, | |
c04ee4b1 | 62 | .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, |
ad75a410 GL |
63 | .reset = ps3_ehci_hc_reset, |
64 | .start = ehci_run, | |
65 | .stop = ehci_stop, | |
66 | .shutdown = ehci_shutdown, | |
67 | .urb_enqueue = ehci_urb_enqueue, | |
68 | .urb_dequeue = ehci_urb_dequeue, | |
69 | .endpoint_disable = ehci_endpoint_disable, | |
b18ffd49 | 70 | .endpoint_reset = ehci_endpoint_reset, |
ad75a410 GL |
71 | .get_frame_number = ehci_get_frame, |
72 | .hub_status_data = ehci_hub_status_data, | |
73 | .hub_control = ehci_hub_control, | |
74 | #if defined(CONFIG_PM) | |
75 | .bus_suspend = ehci_bus_suspend, | |
76 | .bus_resume = ehci_bus_resume, | |
77 | #endif | |
90da096e | 78 | .relinquish_port = ehci_relinquish_port, |
3a31155c | 79 | .port_handed_over = ehci_port_handed_over, |
914b7012 AS |
80 | |
81 | .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, | |
ad75a410 GL |
82 | }; |
83 | ||
41ac7b3a | 84 | static int ps3_ehci_probe(struct ps3_system_bus_device *dev) |
ad75a410 GL |
85 | { |
86 | int result; | |
87 | struct usb_hcd *hcd; | |
88 | unsigned int virq; | |
48e91846 | 89 | static u64 dummy_mask; |
ad75a410 GL |
90 | |
91 | if (usb_disabled()) { | |
92 | result = -ENODEV; | |
93 | goto fail_start; | |
94 | } | |
95 | ||
7a4eb7fd GL |
96 | result = ps3_open_hv_device(dev); |
97 | ||
98 | if (result) { | |
99 | dev_dbg(&dev->core, "%s:%d: ps3_open_hv_device failed\n", | |
100 | __func__, __LINE__); | |
101 | goto fail_open; | |
102 | } | |
103 | ||
104 | result = ps3_dma_region_create(dev->d_region); | |
105 | ||
106 | if (result) { | |
107 | dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: " | |
108 | "(%d)\n", __func__, __LINE__, result); | |
109 | BUG_ON("check region type"); | |
110 | goto fail_dma_region; | |
111 | } | |
112 | ||
ad75a410 GL |
113 | result = ps3_mmio_region_create(dev->m_region); |
114 | ||
115 | if (result) { | |
116 | dev_dbg(&dev->core, "%s:%d: ps3_map_mmio_region failed\n", | |
117 | __func__, __LINE__); | |
118 | result = -EPERM; | |
7a4eb7fd | 119 | goto fail_mmio_region; |
ad75a410 GL |
120 | } |
121 | ||
122 | dev_dbg(&dev->core, "%s:%d: mmio mapped_addr %lxh\n", __func__, | |
123 | __LINE__, dev->m_region->lpar_addr); | |
124 | ||
dc4f60c2 | 125 | result = ps3_io_irq_setup(PS3_BINDING_CPU_ANY, dev->interrupt_id, &virq); |
ad75a410 GL |
126 | |
127 | if (result) { | |
128 | dev_dbg(&dev->core, "%s:%d: ps3_construct_io_irq(%d) failed.\n", | |
129 | __func__, __LINE__, virq); | |
130 | result = -EPERM; | |
131 | goto fail_irq; | |
132 | } | |
133 | ||
48e91846 GL |
134 | dummy_mask = DMA_BIT_MASK(32); |
135 | dev->core.dma_mask = &dummy_mask; | |
136 | dma_set_coherent_mask(&dev->core, dummy_mask); | |
ad75a410 | 137 | |
7071a3ce | 138 | hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev_name(&dev->core)); |
ad75a410 GL |
139 | |
140 | if (!hcd) { | |
141 | dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, | |
142 | __LINE__); | |
143 | result = -ENOMEM; | |
144 | goto fail_create_hcd; | |
145 | } | |
146 | ||
147 | hcd->rsrc_start = dev->m_region->lpar_addr; | |
148 | hcd->rsrc_len = dev->m_region->len; | |
7a4eb7fd GL |
149 | |
150 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) | |
151 | dev_dbg(&dev->core, "%s:%d: request_mem_region failed\n", | |
152 | __func__, __LINE__); | |
153 | ||
ad75a410 GL |
154 | hcd->regs = ioremap(dev->m_region->lpar_addr, dev->m_region->len); |
155 | ||
156 | if (!hcd->regs) { | |
157 | dev_dbg(&dev->core, "%s:%d: ioremap failed\n", __func__, | |
158 | __LINE__); | |
159 | result = -EPERM; | |
160 | goto fail_ioremap; | |
161 | } | |
162 | ||
163 | dev_dbg(&dev->core, "%s:%d: hcd->rsrc_start %lxh\n", __func__, __LINE__, | |
164 | (unsigned long)hcd->rsrc_start); | |
165 | dev_dbg(&dev->core, "%s:%d: hcd->rsrc_len %lxh\n", __func__, __LINE__, | |
166 | (unsigned long)hcd->rsrc_len); | |
167 | dev_dbg(&dev->core, "%s:%d: hcd->regs %lxh\n", __func__, __LINE__, | |
168 | (unsigned long)hcd->regs); | |
169 | dev_dbg(&dev->core, "%s:%d: virq %lu\n", __func__, __LINE__, | |
170 | (unsigned long)virq); | |
171 | ||
03fa68c2 | 172 | ps3_system_bus_set_drvdata(dev, hcd); |
ad75a410 | 173 | |
b5dd18d8 | 174 | result = usb_add_hcd(hcd, virq, 0); |
ad75a410 GL |
175 | |
176 | if (result) { | |
177 | dev_dbg(&dev->core, "%s:%d: usb_add_hcd failed (%d)\n", | |
178 | __func__, __LINE__, result); | |
179 | goto fail_add_hcd; | |
180 | } | |
181 | ||
3c9740a1 | 182 | device_wakeup_enable(hcd->self.controller); |
ad75a410 GL |
183 | return result; |
184 | ||
185 | fail_add_hcd: | |
186 | iounmap(hcd->regs); | |
187 | fail_ioremap: | |
7a4eb7fd | 188 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
ad75a410 GL |
189 | usb_put_hcd(hcd); |
190 | fail_create_hcd: | |
dc4f60c2 | 191 | ps3_io_irq_destroy(virq); |
ad75a410 GL |
192 | fail_irq: |
193 | ps3_free_mmio_region(dev->m_region); | |
7a4eb7fd GL |
194 | fail_mmio_region: |
195 | ps3_dma_region_free(dev->d_region); | |
196 | fail_dma_region: | |
197 | ps3_close_hv_device(dev); | |
198 | fail_open: | |
ad75a410 GL |
199 | fail_start: |
200 | return result; | |
201 | } | |
202 | ||
7a4eb7fd | 203 | static int ps3_ehci_remove(struct ps3_system_bus_device *dev) |
ad75a410 | 204 | { |
7a4eb7fd | 205 | unsigned int tmp; |
03fa68c2 | 206 | struct usb_hcd *hcd = ps3_system_bus_get_drvdata(dev); |
ad75a410 | 207 | |
7a4eb7fd GL |
208 | BUG_ON(!hcd); |
209 | ||
210 | dev_dbg(&dev->core, "%s:%d: regs %p\n", __func__, __LINE__, hcd->regs); | |
211 | dev_dbg(&dev->core, "%s:%d: irq %u\n", __func__, __LINE__, hcd->irq); | |
212 | ||
213 | tmp = hcd->irq; | |
214 | ||
215 | usb_remove_hcd(hcd); | |
216 | ||
03fa68c2 | 217 | ps3_system_bus_set_drvdata(dev, NULL); |
ad75a410 | 218 | |
7a4eb7fd GL |
219 | BUG_ON(!hcd->regs); |
220 | iounmap(hcd->regs); | |
221 | ||
222 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
223 | usb_put_hcd(hcd); | |
224 | ||
225 | ps3_io_irq_destroy(tmp); | |
226 | ps3_free_mmio_region(dev->m_region); | |
227 | ||
228 | ps3_dma_region_free(dev->d_region); | |
229 | ps3_close_hv_device(dev); | |
230 | ||
ad75a410 GL |
231 | return 0; |
232 | } | |
233 | ||
31348517 | 234 | static int __init ps3_ehci_driver_register(struct ps3_system_bus_driver *drv) |
7a4eb7fd GL |
235 | { |
236 | return firmware_has_feature(FW_FEATURE_PS3_LV1) | |
237 | ? ps3_system_bus_driver_register(drv) | |
238 | : 0; | |
239 | } | |
240 | ||
241 | static void ps3_ehci_driver_unregister(struct ps3_system_bus_driver *drv) | |
242 | { | |
243 | if (firmware_has_feature(FW_FEATURE_PS3_LV1)) | |
244 | ps3_system_bus_driver_unregister(drv); | |
245 | } | |
246 | ||
247 | MODULE_ALIAS(PS3_MODULE_ALIAS_EHCI); | |
ad75a410 | 248 | |
7a4eb7fd GL |
249 | static struct ps3_system_bus_driver ps3_ehci_driver = { |
250 | .core.name = "ps3-ehci-driver", | |
251 | .core.owner = THIS_MODULE, | |
ad75a410 | 252 | .match_id = PS3_MATCH_ID_EHCI, |
7a4eb7fd GL |
253 | .probe = ps3_ehci_probe, |
254 | .remove = ps3_ehci_remove, | |
255 | .shutdown = ps3_ehci_remove, | |
ad75a410 | 256 | }; |