Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * OHCI HCD (Host Controller Driver) for USB. | |
3 | * | |
4 | * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> | |
5 | * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> | |
6 | * (C) Copyright 2002 Hewlett-Packard Company | |
dd9048af | 7 | * |
1da177e4 LT |
8 | * SA1111 Bus Glue |
9 | * | |
10 | * Written by Christopher Hoover <ch@hpl.hp.com> | |
ac310bb5 | 11 | * Based on fragments of previous driver by Russell King et al. |
1da177e4 LT |
12 | * |
13 | * This file is licenced under the GPL. | |
14 | */ | |
dd9048af | 15 | |
a09e64fb | 16 | #include <mach/hardware.h> |
1da177e4 | 17 | #include <asm/mach-types.h> |
a09e64fb RK |
18 | #include <mach/assabet.h> |
19 | #include <mach/badge4.h> | |
1da177e4 LT |
20 | #include <asm/hardware/sa1111.h> |
21 | ||
22 | #ifndef CONFIG_SA1111 | |
23 | #error "This file is SA-1111 bus glue. CONFIG_SA1111 must be defined." | |
24 | #endif | |
25 | ||
26 | extern int usb_disabled(void); | |
27 | ||
28 | /*-------------------------------------------------------------------------*/ | |
29 | ||
30 | static void sa1111_start_hc(struct sa1111_dev *dev) | |
31 | { | |
32 | unsigned int usb_rst = 0; | |
33 | ||
dd9048af | 34 | printk(KERN_DEBUG __FILE__ |
1da177e4 LT |
35 | ": starting SA-1111 OHCI USB Controller\n"); |
36 | ||
37 | #ifdef CONFIG_SA1100_BADGE4 | |
38 | if (machine_is_badge4()) { | |
39 | badge4_set_5V(BADGE4_5V_USB, 1); | |
40 | } | |
41 | #endif | |
42 | ||
43 | if (machine_is_xp860() || | |
44 | machine_has_neponset() || | |
45 | machine_is_pfs168() || | |
46 | machine_is_badge4()) | |
47 | usb_rst = USB_RESET_PWRSENSELOW | USB_RESET_PWRCTRLLOW; | |
48 | ||
49 | /* | |
50 | * Configure the power sense and control lines. Place the USB | |
51 | * host controller in reset. | |
52 | */ | |
53 | sa1111_writel(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET, | |
54 | dev->mapbase + SA1111_USB_RESET); | |
55 | ||
56 | /* | |
57 | * Now, carefully enable the USB clock, and take | |
58 | * the USB host controller out of reset. | |
59 | */ | |
60 | sa1111_enable_device(dev); | |
61 | udelay(11); | |
62 | sa1111_writel(usb_rst, dev->mapbase + SA1111_USB_RESET); | |
63 | } | |
64 | ||
65 | static void sa1111_stop_hc(struct sa1111_dev *dev) | |
66 | { | |
67 | unsigned int usb_rst; | |
dd9048af | 68 | printk(KERN_DEBUG __FILE__ |
1da177e4 LT |
69 | ": stopping SA-1111 OHCI USB Controller\n"); |
70 | ||
71 | /* | |
72 | * Put the USB host controller into reset. | |
73 | */ | |
74 | usb_rst = sa1111_readl(dev->mapbase + SA1111_USB_RESET); | |
75 | sa1111_writel(usb_rst | USB_RESET_FORCEIFRESET | USB_RESET_FORCEHCRESET, | |
76 | dev->mapbase + SA1111_USB_RESET); | |
77 | ||
78 | /* | |
79 | * Stop the USB clock. | |
80 | */ | |
81 | sa1111_disable_device(dev); | |
82 | ||
83 | #ifdef CONFIG_SA1100_BADGE4 | |
84 | if (machine_is_badge4()) { | |
85 | /* Disable power to the USB bus */ | |
86 | badge4_set_5V(BADGE4_5V_USB, 0); | |
87 | } | |
88 | #endif | |
89 | } | |
90 | ||
91 | ||
92 | /*-------------------------------------------------------------------------*/ | |
93 | ||
94 | #if 0 | |
95 | static void dump_hci_status(struct usb_hcd *hcd, const char *label) | |
96 | { | |
97 | unsigned long status = sa1111_readl(hcd->regs + SA1111_USB_STATUS); | |
98 | ||
99 | dbg ("%s USB_STATUS = { %s%s%s%s%s}", label, | |
100 | ((status & USB_STATUS_IRQHCIRMTWKUP) ? "IRQHCIRMTWKUP " : ""), | |
101 | ((status & USB_STATUS_IRQHCIBUFFACC) ? "IRQHCIBUFFACC " : ""), | |
102 | ((status & USB_STATUS_NIRQHCIM) ? "" : "IRQHCIM "), | |
103 | ((status & USB_STATUS_NHCIMFCLR) ? "" : "HCIMFCLR "), | |
104 | ((status & USB_STATUS_USBPWRSENSE) ? "USBPWRSENSE " : "")); | |
105 | } | |
106 | #endif | |
107 | ||
108 | /*-------------------------------------------------------------------------*/ | |
109 | ||
110 | /* configure so an HC device and id are always provided */ | |
111 | /* always called with process context; sleeping is OK */ | |
112 | ||
113 | ||
114 | /** | |
115 | * usb_hcd_sa1111_probe - initialize SA-1111-based HCDs | |
116 | * Context: !in_interrupt() | |
117 | * | |
118 | * Allocates basic resources for this USB host controller, and | |
119 | * then invokes the start() method for the HCD associated with it | |
120 | * through the hotplug entry's driver_data. | |
121 | * | |
122 | * Store this function in the HCD's struct pci_driver as probe(). | |
123 | */ | |
124 | int usb_hcd_sa1111_probe (const struct hc_driver *driver, | |
125 | struct sa1111_dev *dev) | |
126 | { | |
127 | struct usb_hcd *hcd; | |
128 | int retval; | |
129 | ||
130 | hcd = usb_create_hcd (driver, &dev->dev, "sa1111"); | |
131 | if (!hcd) | |
132 | return -ENOMEM; | |
133 | hcd->rsrc_start = dev->res.start; | |
134 | hcd->rsrc_len = dev->res.end - dev->res.start + 1; | |
135 | ||
136 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { | |
137 | dbg("request_mem_region failed"); | |
138 | retval = -EBUSY; | |
139 | goto err1; | |
140 | } | |
141 | hcd->regs = dev->mapbase; | |
142 | ||
143 | sa1111_start_hc(dev); | |
144 | ohci_hcd_init(hcd_to_ohci(hcd)); | |
145 | ||
d54b5caa | 146 | retval = usb_add_hcd(hcd, dev->irq[1], IRQF_DISABLED); |
1da177e4 LT |
147 | if (retval == 0) |
148 | return retval; | |
149 | ||
150 | sa1111_stop_hc(dev); | |
151 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
152 | err1: | |
153 | usb_put_hcd(hcd); | |
154 | return retval; | |
155 | } | |
156 | ||
157 | ||
158 | /* may be called without controller electrically present */ | |
159 | /* may be called with controller, bus, and devices active */ | |
160 | ||
161 | /** | |
162 | * usb_hcd_sa1111_remove - shutdown processing for SA-1111-based HCDs | |
163 | * @dev: USB Host Controller being removed | |
164 | * Context: !in_interrupt() | |
165 | * | |
166 | * Reverses the effect of usb_hcd_sa1111_probe(), first invoking | |
167 | * the HCD's stop() method. It is always called from a thread | |
168 | * context, normally "rmmod", "apmd", or something similar. | |
169 | * | |
170 | */ | |
171 | void usb_hcd_sa1111_remove (struct usb_hcd *hcd, struct sa1111_dev *dev) | |
172 | { | |
173 | usb_remove_hcd(hcd); | |
174 | sa1111_stop_hc(dev); | |
175 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
176 | usb_put_hcd(hcd); | |
177 | } | |
178 | ||
179 | /*-------------------------------------------------------------------------*/ | |
180 | ||
181 | static int __devinit | |
182 | ohci_sa1111_start (struct usb_hcd *hcd) | |
183 | { | |
184 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); | |
185 | int ret; | |
186 | ||
187 | if ((ret = ohci_init(ohci)) < 0) | |
188 | return ret; | |
189 | ||
190 | if ((ret = ohci_run (ohci)) < 0) { | |
191 | err ("can't start %s", hcd->self.bus_name); | |
192 | ohci_stop (hcd); | |
193 | return ret; | |
194 | } | |
195 | return 0; | |
196 | } | |
197 | ||
198 | /*-------------------------------------------------------------------------*/ | |
199 | ||
200 | static const struct hc_driver ohci_sa1111_hc_driver = { | |
201 | .description = hcd_name, | |
202 | .product_desc = "SA-1111 OHCI", | |
203 | .hcd_priv_size = sizeof(struct ohci_hcd), | |
204 | ||
205 | /* | |
206 | * generic hardware linkage | |
207 | */ | |
208 | .irq = ohci_irq, | |
209 | .flags = HCD_USB11 | HCD_MEMORY, | |
210 | ||
211 | /* | |
212 | * basic lifecycle operations | |
213 | */ | |
214 | .start = ohci_sa1111_start, | |
1da177e4 LT |
215 | .stop = ohci_stop, |
216 | ||
217 | /* | |
218 | * managing i/o requests and associated device resources | |
219 | */ | |
220 | .urb_enqueue = ohci_urb_enqueue, | |
221 | .urb_dequeue = ohci_urb_dequeue, | |
222 | .endpoint_disable = ohci_endpoint_disable, | |
223 | ||
224 | /* | |
225 | * scheduling support | |
226 | */ | |
227 | .get_frame_number = ohci_get_frame, | |
228 | ||
229 | /* | |
230 | * root hub support | |
231 | */ | |
232 | .hub_status_data = ohci_hub_status_data, | |
233 | .hub_control = ohci_hub_control, | |
8ad7fe16 | 234 | #ifdef CONFIG_PM |
0c0382e3 AS |
235 | .bus_suspend = ohci_bus_suspend, |
236 | .bus_resume = ohci_bus_resume, | |
1da177e4 | 237 | #endif |
9293677a | 238 | .start_port_reset = ohci_start_port_reset, |
1da177e4 LT |
239 | }; |
240 | ||
241 | /*-------------------------------------------------------------------------*/ | |
242 | ||
243 | static int ohci_hcd_sa1111_drv_probe(struct sa1111_dev *dev) | |
244 | { | |
245 | int ret; | |
246 | ||
247 | if (usb_disabled()) | |
248 | return -ENODEV; | |
249 | ||
250 | ret = usb_hcd_sa1111_probe(&ohci_sa1111_hc_driver, dev); | |
251 | return ret; | |
252 | } | |
253 | ||
254 | static int ohci_hcd_sa1111_drv_remove(struct sa1111_dev *dev) | |
255 | { | |
256 | struct usb_hcd *hcd = sa1111_get_drvdata(dev); | |
257 | ||
258 | usb_hcd_sa1111_remove(hcd, dev); | |
259 | return 0; | |
260 | } | |
261 | ||
262 | static struct sa1111_driver ohci_hcd_sa1111_driver = { | |
263 | .drv = { | |
264 | .name = "sa1111-ohci", | |
265 | }, | |
266 | .devid = SA1111_DEVID_USB, | |
267 | .probe = ohci_hcd_sa1111_drv_probe, | |
268 | .remove = ohci_hcd_sa1111_drv_remove, | |
269 | }; | |
270 |