Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * dummy_hcd.c -- Dummy/Loopback USB host and device emulator driver. |
| 3 | * |
| 4 | * Maintainer: Alan Stern <stern@rowland.harvard.edu> |
| 5 | * |
| 6 | * Copyright (C) 2003 David Brownell |
| 7 | * Copyright (C) 2003-2005 Alan Stern |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | |
| 25 | /* |
| 26 | * This exposes a device side "USB gadget" API, driven by requests to a |
| 27 | * Linux-USB host controller driver. USB traffic is simulated; there's |
| 28 | * no need for USB hardware. Use this with two other drivers: |
| 29 | * |
| 30 | * - Gadget driver, responding to requests (slave); |
| 31 | * - Host-side device driver, as already familiar in Linux. |
| 32 | * |
| 33 | * Having this all in one kernel can help some stages of development, |
| 34 | * bypassing some hardware (and driver) issues. UML could help too. |
| 35 | */ |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/module.h> |
| 38 | #include <linux/kernel.h> |
| 39 | #include <linux/delay.h> |
| 40 | #include <linux/ioport.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/errno.h> |
| 43 | #include <linux/init.h> |
| 44 | #include <linux/timer.h> |
| 45 | #include <linux/list.h> |
| 46 | #include <linux/interrupt.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 47 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <linux/usb.h> |
David Brownell | 9454a57 | 2007-10-04 18:05:17 -0700 | [diff] [blame] | 49 | #include <linux/usb/gadget.h> |
Eric Lescouet | 27729aa | 2010-04-24 23:21:52 +0200 | [diff] [blame] | 50 | #include <linux/usb/hcd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | #include <asm/byteorder.h> |
| 53 | #include <asm/io.h> |
| 54 | #include <asm/irq.h> |
| 55 | #include <asm/system.h> |
| 56 | #include <asm/unaligned.h> |
| 57 | |
| 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #define DRIVER_DESC "USB Host+Gadget Emulator" |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 60 | #define DRIVER_VERSION "02 May 2005" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
Alan Stern | caf29f6 | 2007-12-06 11:10:39 -0500 | [diff] [blame] | 62 | #define POWER_BUDGET 500 /* in mA; use 8 for low-power port testing */ |
| 63 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | static const char driver_name [] = "dummy_hcd"; |
| 65 | static const char driver_desc [] = "USB Host+Gadget Emulator"; |
| 66 | |
| 67 | static const char gadget_name [] = "dummy_udc"; |
| 68 | |
| 69 | MODULE_DESCRIPTION (DRIVER_DESC); |
| 70 | MODULE_AUTHOR ("David Brownell"); |
| 71 | MODULE_LICENSE ("GPL"); |
| 72 | |
| 73 | /*-------------------------------------------------------------------------*/ |
| 74 | |
| 75 | /* gadget side driver data structres */ |
| 76 | struct dummy_ep { |
| 77 | struct list_head queue; |
| 78 | unsigned long last_io; /* jiffies timestamp */ |
| 79 | struct usb_gadget *gadget; |
| 80 | const struct usb_endpoint_descriptor *desc; |
| 81 | struct usb_ep ep; |
| 82 | unsigned halted : 1; |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 83 | unsigned wedged : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | unsigned already_seen : 1; |
| 85 | unsigned setup_stage : 1; |
| 86 | }; |
| 87 | |
| 88 | struct dummy_request { |
| 89 | struct list_head queue; /* ep's requests */ |
| 90 | struct usb_request req; |
| 91 | }; |
| 92 | |
| 93 | static inline struct dummy_ep *usb_ep_to_dummy_ep (struct usb_ep *_ep) |
| 94 | { |
| 95 | return container_of (_ep, struct dummy_ep, ep); |
| 96 | } |
| 97 | |
| 98 | static inline struct dummy_request *usb_request_to_dummy_request |
| 99 | (struct usb_request *_req) |
| 100 | { |
| 101 | return container_of (_req, struct dummy_request, req); |
| 102 | } |
| 103 | |
| 104 | /*-------------------------------------------------------------------------*/ |
| 105 | |
| 106 | /* |
| 107 | * Every device has ep0 for control requests, plus up to 30 more endpoints, |
| 108 | * in one of two types: |
| 109 | * |
| 110 | * - Configurable: direction (in/out), type (bulk, iso, etc), and endpoint |
| 111 | * number can be changed. Names like "ep-a" are used for this type. |
| 112 | * |
| 113 | * - Fixed Function: in other cases. some characteristics may be mutable; |
| 114 | * that'd be hardware-specific. Names like "ep12out-bulk" are used. |
| 115 | * |
| 116 | * Gadget drivers are responsible for not setting up conflicting endpoint |
| 117 | * configurations, illegal or unsupported packet lengths, and so on. |
| 118 | */ |
| 119 | |
| 120 | static const char ep0name [] = "ep0"; |
| 121 | |
| 122 | static const char *const ep_name [] = { |
| 123 | ep0name, /* everyone has ep0 */ |
| 124 | |
| 125 | /* act like a net2280: high speed, six configurable endpoints */ |
| 126 | "ep-a", "ep-b", "ep-c", "ep-d", "ep-e", "ep-f", |
| 127 | |
| 128 | /* or like pxa250: fifteen fixed function endpoints */ |
| 129 | "ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int", |
| 130 | "ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int", |
| 131 | "ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso", |
| 132 | "ep15in-int", |
| 133 | |
| 134 | /* or like sa1100: two fixed function endpoints */ |
| 135 | "ep1out-bulk", "ep2in-bulk", |
| 136 | }; |
Tobias Klauser | 52950ed | 2005-12-11 16:20:08 +0100 | [diff] [blame] | 137 | #define DUMMY_ENDPOINTS ARRAY_SIZE(ep_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 139 | /*-------------------------------------------------------------------------*/ |
| 140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | #define FIFO_SIZE 64 |
| 142 | |
| 143 | struct urbp { |
| 144 | struct urb *urb; |
| 145 | struct list_head urbp_list; |
| 146 | }; |
| 147 | |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 148 | |
| 149 | enum dummy_rh_state { |
| 150 | DUMMY_RH_RESET, |
| 151 | DUMMY_RH_SUSPENDED, |
| 152 | DUMMY_RH_RUNNING |
| 153 | }; |
| 154 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 155 | struct dummy_hcd { |
| 156 | struct dummy *dum; |
| 157 | enum dummy_rh_state rh_state; |
| 158 | struct timer_list timer; |
| 159 | u32 port_status; |
| 160 | u32 old_status; |
| 161 | unsigned long re_timeout; |
| 162 | |
| 163 | struct usb_device *udev; |
| 164 | struct list_head urbp_list; |
| 165 | |
| 166 | unsigned active:1; |
| 167 | unsigned old_active:1; |
| 168 | unsigned resuming:1; |
| 169 | }; |
| 170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | struct dummy { |
| 172 | spinlock_t lock; |
| 173 | |
| 174 | /* |
| 175 | * SLAVE/GADGET side support |
| 176 | */ |
| 177 | struct dummy_ep ep [DUMMY_ENDPOINTS]; |
| 178 | int address; |
| 179 | struct usb_gadget gadget; |
| 180 | struct usb_gadget_driver *driver; |
| 181 | struct dummy_request fifo_req; |
| 182 | u8 fifo_buf [FIFO_SIZE]; |
| 183 | u16 devstatus; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 184 | unsigned udc_suspended:1; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 185 | unsigned pullup:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
| 187 | /* |
| 188 | * MASTER/HOST side support |
| 189 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 190 | struct dummy_hcd *hs_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | }; |
| 192 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 193 | static inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 195 | return (struct dummy_hcd *) (hcd->hcd_priv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | } |
| 197 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 198 | static inline struct usb_hcd *dummy_hcd_to_hcd(struct dummy_hcd *dum) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | { |
| 200 | return container_of((void *) dum, struct usb_hcd, hcd_priv); |
| 201 | } |
| 202 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 203 | static inline struct device *dummy_dev(struct dummy_hcd *dum) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 205 | return dummy_hcd_to_hcd(dum)->self.controller; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | } |
| 207 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 208 | static inline struct device *udc_dev (struct dummy *dum) |
| 209 | { |
| 210 | return dum->gadget.dev.parent; |
| 211 | } |
| 212 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | static inline struct dummy *ep_to_dummy (struct dummy_ep *ep) |
| 214 | { |
| 215 | return container_of (ep->gadget, struct dummy, gadget); |
| 216 | } |
| 217 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 218 | static inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 220 | struct dummy *dum = container_of(gadget, struct dummy, gadget); |
| 221 | return dum->hs_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | static inline struct dummy *gadget_dev_to_dummy (struct device *dev) |
| 225 | { |
| 226 | return container_of (dev, struct dummy, gadget.dev); |
| 227 | } |
| 228 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 229 | static struct dummy the_controller; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
| 231 | /*-------------------------------------------------------------------------*/ |
| 232 | |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 233 | /* SLAVE/GADGET SIDE UTILITY ROUTINES */ |
| 234 | |
| 235 | /* called with spinlock held */ |
| 236 | static void nuke (struct dummy *dum, struct dummy_ep *ep) |
| 237 | { |
| 238 | while (!list_empty (&ep->queue)) { |
| 239 | struct dummy_request *req; |
| 240 | |
| 241 | req = list_entry (ep->queue.next, struct dummy_request, queue); |
| 242 | list_del_init (&req->queue); |
| 243 | req->req.status = -ESHUTDOWN; |
| 244 | |
| 245 | spin_unlock (&dum->lock); |
| 246 | req->req.complete (&ep->ep, &req->req); |
| 247 | spin_lock (&dum->lock); |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | /* caller must hold lock */ |
| 252 | static void |
| 253 | stop_activity (struct dummy *dum) |
| 254 | { |
| 255 | struct dummy_ep *ep; |
| 256 | |
| 257 | /* prevent any more requests */ |
| 258 | dum->address = 0; |
| 259 | |
| 260 | /* The timer is left running so that outstanding URBs can fail */ |
| 261 | |
| 262 | /* nuke any pending requests first, so driver i/o is quiesced */ |
| 263 | list_for_each_entry (ep, &dum->gadget.ep_list, ep.ep_list) |
| 264 | nuke (dum, ep); |
| 265 | |
| 266 | /* driver now does any non-usb quiescing necessary */ |
| 267 | } |
| 268 | |
| 269 | /* caller must hold lock */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 270 | static void set_link_state(struct dummy_hcd *dum_hcd) |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 271 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 272 | struct dummy *dum = dum_hcd->dum; |
| 273 | |
| 274 | dum_hcd->active = 0; |
| 275 | if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) |
| 276 | dum_hcd->port_status = 0; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 277 | |
| 278 | /* UDC suspend must cause a disconnect */ |
| 279 | else if (!dum->pullup || dum->udc_suspended) { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 280 | dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 281 | USB_PORT_STAT_ENABLE | |
| 282 | USB_PORT_STAT_LOW_SPEED | |
| 283 | USB_PORT_STAT_HIGH_SPEED | |
| 284 | USB_PORT_STAT_SUSPEND); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 285 | if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0) |
| 286 | dum_hcd->port_status |= |
| 287 | (USB_PORT_STAT_C_CONNECTION << 16); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 288 | } else { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 289 | dum_hcd->port_status |= USB_PORT_STAT_CONNECTION; |
| 290 | if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) == 0) |
| 291 | dum_hcd->port_status |= |
| 292 | (USB_PORT_STAT_C_CONNECTION << 16); |
| 293 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0) |
| 294 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; |
| 295 | else if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 && |
| 296 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) |
| 297 | dum_hcd->active = 1; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 298 | } |
| 299 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 300 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 || |
| 301 | dum_hcd->active) |
| 302 | dum_hcd->resuming = 0; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 303 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 304 | if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 || |
| 305 | (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) { |
| 306 | if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 && |
| 307 | (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 && |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 308 | dum->driver) { |
| 309 | stop_activity (dum); |
| 310 | spin_unlock (&dum->lock); |
| 311 | dum->driver->disconnect (&dum->gadget); |
| 312 | spin_lock (&dum->lock); |
| 313 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 314 | } else if (dum_hcd->active != dum_hcd->old_active) { |
| 315 | if (dum_hcd->old_active && dum->driver->suspend) { |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 316 | spin_unlock (&dum->lock); |
| 317 | dum->driver->suspend (&dum->gadget); |
| 318 | spin_lock (&dum->lock); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 319 | } else if (!dum_hcd->old_active && dum->driver->resume) { |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 320 | spin_unlock (&dum->lock); |
| 321 | dum->driver->resume (&dum->gadget); |
| 322 | spin_lock (&dum->lock); |
| 323 | } |
| 324 | } |
| 325 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 326 | dum_hcd->old_status = dum_hcd->port_status; |
| 327 | dum_hcd->old_active = dum_hcd->active; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 328 | } |
| 329 | |
| 330 | /*-------------------------------------------------------------------------*/ |
| 331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | /* SLAVE/GADGET SIDE DRIVER |
| 333 | * |
| 334 | * This only tracks gadget state. All the work is done when the host |
| 335 | * side tries some (emulated) i/o operation. Real device controller |
| 336 | * drivers would do real i/o using dma, fifos, irqs, timers, etc. |
| 337 | */ |
| 338 | |
| 339 | #define is_enabled(dum) \ |
| 340 | (dum->port_status & USB_PORT_STAT_ENABLE) |
| 341 | |
| 342 | static int |
| 343 | dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) |
| 344 | { |
| 345 | struct dummy *dum; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 346 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | struct dummy_ep *ep; |
| 348 | unsigned max; |
| 349 | int retval; |
| 350 | |
| 351 | ep = usb_ep_to_dummy_ep (_ep); |
| 352 | if (!_ep || !desc || ep->desc || _ep->name == ep0name |
| 353 | || desc->bDescriptorType != USB_DT_ENDPOINT) |
| 354 | return -EINVAL; |
| 355 | dum = ep_to_dummy (ep); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 356 | if (!dum->driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | return -ESHUTDOWN; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 358 | dum_hcd = dum->hs_hcd; |
| 359 | if (!is_enabled(dum_hcd)) |
| 360 | return -ESHUTDOWN; |
| 361 | |
| 362 | /* |
| 363 | * For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the |
| 364 | * maximum packet size. |
| 365 | */ |
| 366 | max = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | |
| 368 | /* drivers must not request bad settings, since lower levels |
| 369 | * (hardware or its drivers) may not check. some endpoints |
| 370 | * can't do iso, many have maxpacket limitations, etc. |
| 371 | * |
| 372 | * since this "hardware" driver is here to help debugging, we |
| 373 | * have some extra sanity checks. (there could be more though, |
| 374 | * especially for "ep9out" style fixed function ones.) |
| 375 | */ |
| 376 | retval = -EINVAL; |
| 377 | switch (desc->bmAttributes & 0x03) { |
| 378 | case USB_ENDPOINT_XFER_BULK: |
| 379 | if (strstr (ep->ep.name, "-iso") |
| 380 | || strstr (ep->ep.name, "-int")) { |
| 381 | goto done; |
| 382 | } |
| 383 | switch (dum->gadget.speed) { |
| 384 | case USB_SPEED_HIGH: |
| 385 | if (max == 512) |
| 386 | break; |
Ingo van Lil | 9063ff4 | 2008-03-28 14:50:26 -0700 | [diff] [blame] | 387 | goto done; |
| 388 | case USB_SPEED_FULL: |
| 389 | if (max == 8 || max == 16 || max == 32 || max == 64) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | /* we'll fake any legal size */ |
| 391 | break; |
Ingo van Lil | 9063ff4 | 2008-03-28 14:50:26 -0700 | [diff] [blame] | 392 | /* save a return statement */ |
| 393 | default: |
| 394 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | } |
| 396 | break; |
| 397 | case USB_ENDPOINT_XFER_INT: |
| 398 | if (strstr (ep->ep.name, "-iso")) /* bulk is ok */ |
| 399 | goto done; |
| 400 | /* real hardware might not handle all packet sizes */ |
| 401 | switch (dum->gadget.speed) { |
| 402 | case USB_SPEED_HIGH: |
| 403 | if (max <= 1024) |
| 404 | break; |
| 405 | /* save a return statement */ |
| 406 | case USB_SPEED_FULL: |
| 407 | if (max <= 64) |
| 408 | break; |
| 409 | /* save a return statement */ |
| 410 | default: |
| 411 | if (max <= 8) |
| 412 | break; |
| 413 | goto done; |
| 414 | } |
| 415 | break; |
| 416 | case USB_ENDPOINT_XFER_ISOC: |
| 417 | if (strstr (ep->ep.name, "-bulk") |
| 418 | || strstr (ep->ep.name, "-int")) |
| 419 | goto done; |
| 420 | /* real hardware might not handle all packet sizes */ |
| 421 | switch (dum->gadget.speed) { |
| 422 | case USB_SPEED_HIGH: |
| 423 | if (max <= 1024) |
| 424 | break; |
| 425 | /* save a return statement */ |
| 426 | case USB_SPEED_FULL: |
| 427 | if (max <= 1023) |
| 428 | break; |
| 429 | /* save a return statement */ |
| 430 | default: |
| 431 | goto done; |
| 432 | } |
| 433 | break; |
| 434 | default: |
| 435 | /* few chips support control except on ep0 */ |
| 436 | goto done; |
| 437 | } |
| 438 | |
| 439 | _ep->maxpacket = max; |
| 440 | ep->desc = desc; |
| 441 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 442 | dev_dbg (udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | _ep->name, |
| 444 | desc->bEndpointAddress & 0x0f, |
| 445 | (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", |
| 446 | ({ char *val; |
| 447 | switch (desc->bmAttributes & 0x03) { |
Tatyana Brokhman | 7c884fe | 2011-06-28 16:33:52 +0300 | [diff] [blame] | 448 | case USB_ENDPOINT_XFER_BULK: |
| 449 | val = "bulk"; |
| 450 | break; |
| 451 | case USB_ENDPOINT_XFER_ISOC: |
| 452 | val = "iso"; |
| 453 | break; |
| 454 | case USB_ENDPOINT_XFER_INT: |
| 455 | val = "intr"; |
| 456 | break; |
| 457 | default: |
| 458 | val = "ctrl"; |
| 459 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | }; val; }), |
| 461 | max); |
| 462 | |
| 463 | /* at this point real hardware should be NAKing transfers |
| 464 | * to that endpoint, until a buffer is queued to it. |
| 465 | */ |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 466 | ep->halted = ep->wedged = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | retval = 0; |
| 468 | done: |
| 469 | return retval; |
| 470 | } |
| 471 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | static int dummy_disable (struct usb_ep *_ep) |
| 473 | { |
| 474 | struct dummy_ep *ep; |
| 475 | struct dummy *dum; |
| 476 | unsigned long flags; |
| 477 | int retval; |
| 478 | |
| 479 | ep = usb_ep_to_dummy_ep (_ep); |
| 480 | if (!_ep || !ep->desc || _ep->name == ep0name) |
| 481 | return -EINVAL; |
| 482 | dum = ep_to_dummy (ep); |
| 483 | |
| 484 | spin_lock_irqsave (&dum->lock, flags); |
| 485 | ep->desc = NULL; |
| 486 | retval = 0; |
| 487 | nuke (dum, ep); |
| 488 | spin_unlock_irqrestore (&dum->lock, flags); |
| 489 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 490 | dev_dbg (udc_dev(dum), "disabled %s\n", _ep->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | return retval; |
| 492 | } |
| 493 | |
| 494 | static struct usb_request * |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 495 | dummy_alloc_request (struct usb_ep *_ep, gfp_t mem_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | { |
| 497 | struct dummy_ep *ep; |
| 498 | struct dummy_request *req; |
| 499 | |
| 500 | if (!_ep) |
| 501 | return NULL; |
| 502 | ep = usb_ep_to_dummy_ep (_ep); |
| 503 | |
Eric Sesterhenn | 7039f42 | 2006-02-27 13:34:10 -0800 | [diff] [blame] | 504 | req = kzalloc(sizeof(*req), mem_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | if (!req) |
| 506 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | INIT_LIST_HEAD (&req->queue); |
| 508 | return &req->req; |
| 509 | } |
| 510 | |
| 511 | static void |
| 512 | dummy_free_request (struct usb_ep *_ep, struct usb_request *_req) |
| 513 | { |
| 514 | struct dummy_ep *ep; |
| 515 | struct dummy_request *req; |
| 516 | |
| 517 | ep = usb_ep_to_dummy_ep (_ep); |
| 518 | if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) |
| 519 | return; |
| 520 | |
| 521 | req = usb_request_to_dummy_request (_req); |
| 522 | WARN_ON (!list_empty (&req->queue)); |
| 523 | kfree (req); |
| 524 | } |
| 525 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | static void |
| 527 | fifo_complete (struct usb_ep *ep, struct usb_request *req) |
| 528 | { |
| 529 | } |
| 530 | |
| 531 | static int |
Olav Kongas | 5db539e | 2005-06-23 20:25:36 +0300 | [diff] [blame] | 532 | dummy_queue (struct usb_ep *_ep, struct usb_request *_req, |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 533 | gfp_t mem_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | { |
| 535 | struct dummy_ep *ep; |
| 536 | struct dummy_request *req; |
| 537 | struct dummy *dum; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 538 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | unsigned long flags; |
| 540 | |
| 541 | req = usb_request_to_dummy_request (_req); |
| 542 | if (!_req || !list_empty (&req->queue) || !_req->complete) |
| 543 | return -EINVAL; |
| 544 | |
| 545 | ep = usb_ep_to_dummy_ep (_ep); |
| 546 | if (!_ep || (!ep->desc && _ep->name != ep0name)) |
| 547 | return -EINVAL; |
| 548 | |
| 549 | dum = ep_to_dummy (ep); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 550 | dum_hcd = dum->hs_hcd; |
| 551 | if (!dum->driver || !is_enabled(dum_hcd)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | return -ESHUTDOWN; |
| 553 | |
| 554 | #if 0 |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 555 | dev_dbg (udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | ep, _req, _ep->name, _req->length, _req->buf); |
| 557 | #endif |
| 558 | |
| 559 | _req->status = -EINPROGRESS; |
| 560 | _req->actual = 0; |
| 561 | spin_lock_irqsave (&dum->lock, flags); |
| 562 | |
| 563 | /* implement an emulated single-request FIFO */ |
| 564 | if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && |
| 565 | list_empty (&dum->fifo_req.queue) && |
| 566 | list_empty (&ep->queue) && |
| 567 | _req->length <= FIFO_SIZE) { |
| 568 | req = &dum->fifo_req; |
| 569 | req->req = *_req; |
| 570 | req->req.buf = dum->fifo_buf; |
| 571 | memcpy (dum->fifo_buf, _req->buf, _req->length); |
| 572 | req->req.context = dum; |
| 573 | req->req.complete = fifo_complete; |
| 574 | |
David Brownell | c728df7 | 2008-07-26 08:06:24 -0700 | [diff] [blame] | 575 | list_add_tail(&req->queue, &ep->queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | spin_unlock (&dum->lock); |
| 577 | _req->actual = _req->length; |
| 578 | _req->status = 0; |
| 579 | _req->complete (_ep, _req); |
| 580 | spin_lock (&dum->lock); |
David Brownell | c728df7 | 2008-07-26 08:06:24 -0700 | [diff] [blame] | 581 | } else |
| 582 | list_add_tail(&req->queue, &ep->queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | spin_unlock_irqrestore (&dum->lock, flags); |
| 584 | |
| 585 | /* real hardware would likely enable transfers here, in case |
| 586 | * it'd been left NAKing. |
| 587 | */ |
| 588 | return 0; |
| 589 | } |
| 590 | |
| 591 | static int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) |
| 592 | { |
| 593 | struct dummy_ep *ep; |
| 594 | struct dummy *dum; |
| 595 | int retval = -EINVAL; |
| 596 | unsigned long flags; |
| 597 | struct dummy_request *req = NULL; |
| 598 | |
| 599 | if (!_ep || !_req) |
| 600 | return retval; |
| 601 | ep = usb_ep_to_dummy_ep (_ep); |
| 602 | dum = ep_to_dummy (ep); |
| 603 | |
| 604 | if (!dum->driver) |
| 605 | return -ESHUTDOWN; |
| 606 | |
Alan Stern | b4dbda1 | 2006-07-28 17:07:34 -0400 | [diff] [blame] | 607 | local_irq_save (flags); |
| 608 | spin_lock (&dum->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | list_for_each_entry (req, &ep->queue, queue) { |
| 610 | if (&req->req == _req) { |
| 611 | list_del_init (&req->queue); |
| 612 | _req->status = -ECONNRESET; |
| 613 | retval = 0; |
| 614 | break; |
| 615 | } |
| 616 | } |
Alan Stern | b4dbda1 | 2006-07-28 17:07:34 -0400 | [diff] [blame] | 617 | spin_unlock (&dum->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | |
| 619 | if (retval == 0) { |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 620 | dev_dbg (udc_dev(dum), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | "dequeued req %p from %s, len %d buf %p\n", |
| 622 | req, _ep->name, _req->length, _req->buf); |
| 623 | _req->complete (_ep, _req); |
| 624 | } |
Alan Stern | b4dbda1 | 2006-07-28 17:07:34 -0400 | [diff] [blame] | 625 | local_irq_restore (flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | return retval; |
| 627 | } |
| 628 | |
| 629 | static int |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 630 | dummy_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | { |
| 632 | struct dummy_ep *ep; |
| 633 | struct dummy *dum; |
| 634 | |
| 635 | if (!_ep) |
| 636 | return -EINVAL; |
| 637 | ep = usb_ep_to_dummy_ep (_ep); |
| 638 | dum = ep_to_dummy (ep); |
| 639 | if (!dum->driver) |
| 640 | return -ESHUTDOWN; |
| 641 | if (!value) |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 642 | ep->halted = ep->wedged = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && |
| 644 | !list_empty (&ep->queue)) |
| 645 | return -EAGAIN; |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 646 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | ep->halted = 1; |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 648 | if (wedged) |
| 649 | ep->wedged = 1; |
| 650 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | /* FIXME clear emulated data toggle too */ |
| 652 | return 0; |
| 653 | } |
| 654 | |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 655 | static int |
| 656 | dummy_set_halt(struct usb_ep *_ep, int value) |
| 657 | { |
| 658 | return dummy_set_halt_and_wedge(_ep, value, 0); |
| 659 | } |
| 660 | |
| 661 | static int dummy_set_wedge(struct usb_ep *_ep) |
| 662 | { |
| 663 | if (!_ep || _ep->name == ep0name) |
| 664 | return -EINVAL; |
| 665 | return dummy_set_halt_and_wedge(_ep, 1, 1); |
| 666 | } |
| 667 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | static const struct usb_ep_ops dummy_ep_ops = { |
| 669 | .enable = dummy_enable, |
| 670 | .disable = dummy_disable, |
| 671 | |
| 672 | .alloc_request = dummy_alloc_request, |
| 673 | .free_request = dummy_free_request, |
| 674 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | .queue = dummy_queue, |
| 676 | .dequeue = dummy_dequeue, |
| 677 | |
| 678 | .set_halt = dummy_set_halt, |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 679 | .set_wedge = dummy_set_wedge, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | }; |
| 681 | |
| 682 | /*-------------------------------------------------------------------------*/ |
| 683 | |
| 684 | /* there are both host and device side versions of this call ... */ |
| 685 | static int dummy_g_get_frame (struct usb_gadget *_gadget) |
| 686 | { |
| 687 | struct timeval tv; |
| 688 | |
| 689 | do_gettimeofday (&tv); |
| 690 | return tv.tv_usec / 1000; |
| 691 | } |
| 692 | |
| 693 | static int dummy_wakeup (struct usb_gadget *_gadget) |
| 694 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 695 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 697 | dum_hcd = gadget_to_dummy_hcd(_gadget); |
| 698 | if (!(dum_hcd->dum->devstatus & ((1 << USB_DEVICE_B_HNP_ENABLE) |
Alan Stern | 5742b0c | 2005-05-02 11:25:17 -0400 | [diff] [blame] | 699 | | (1 << USB_DEVICE_REMOTE_WAKEUP)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | return -EINVAL; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 701 | if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 702 | return -ENOLINK; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 703 | if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 && |
| 704 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 705 | return -EIO; |
| 706 | |
| 707 | /* FIXME: What if the root hub is suspended but the port isn't? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | |
| 709 | /* hub notices our request, issues downstream resume, etc */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 710 | dum_hcd->resuming = 1; |
| 711 | dum_hcd->re_timeout = jiffies + msecs_to_jiffies(20); |
| 712 | mod_timer(&dummy_hcd_to_hcd(dum_hcd)->rh_timer, dum_hcd->re_timeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | static int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) |
| 717 | { |
| 718 | struct dummy *dum; |
| 719 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 720 | dum = (gadget_to_dummy_hcd(_gadget))->dum; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | if (value) |
| 722 | dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); |
| 723 | else |
| 724 | dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); |
| 725 | return 0; |
| 726 | } |
| 727 | |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 728 | static int dummy_pullup (struct usb_gadget *_gadget, int value) |
| 729 | { |
| 730 | struct dummy *dum; |
| 731 | unsigned long flags; |
| 732 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 733 | dum = gadget_to_dummy_hcd(_gadget)->dum; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 734 | spin_lock_irqsave (&dum->lock, flags); |
| 735 | dum->pullup = (value != 0); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 736 | set_link_state(dum->hs_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 737 | spin_unlock_irqrestore (&dum->lock, flags); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 738 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd)); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 739 | return 0; |
| 740 | } |
| 741 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 742 | static int dummy_udc_start(struct usb_gadget_driver *driver, |
| 743 | int (*bind)(struct usb_gadget *)); |
| 744 | static int dummy_udc_stop(struct usb_gadget_driver *driver); |
| 745 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | static const struct usb_gadget_ops dummy_ops = { |
| 747 | .get_frame = dummy_g_get_frame, |
| 748 | .wakeup = dummy_wakeup, |
| 749 | .set_selfpowered = dummy_set_selfpowered, |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 750 | .pullup = dummy_pullup, |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 751 | .start = dummy_udc_start, |
| 752 | .stop = dummy_udc_stop, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | }; |
| 754 | |
| 755 | /*-------------------------------------------------------------------------*/ |
| 756 | |
| 757 | /* "function" sysfs attribute */ |
| 758 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 759 | show_function (struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | { |
| 761 | struct dummy *dum = gadget_dev_to_dummy (dev); |
| 762 | |
| 763 | if (!dum->driver || !dum->driver->function) |
| 764 | return 0; |
| 765 | return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); |
| 766 | } |
Alan Stern | cc095b0 | 2005-05-10 15:28:38 -0400 | [diff] [blame] | 767 | static DEVICE_ATTR (function, S_IRUGO, show_function, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | |
| 769 | /*-------------------------------------------------------------------------*/ |
| 770 | |
| 771 | /* |
| 772 | * Driver registration/unregistration. |
| 773 | * |
| 774 | * This is basically hardware-specific; there's usually only one real USB |
| 775 | * device (not host) controller since that's how USB devices are intended |
| 776 | * to work. So most implementations of these api calls will rely on the |
| 777 | * fact that only one driver will ever bind to the hardware. But curious |
| 778 | * hardware can be built with discrete components, so the gadget API doesn't |
| 779 | * require that assumption. |
| 780 | * |
| 781 | * For this emulator, it might be convenient to create a usb slave device |
| 782 | * for each driver that registers: just add to a big root hub. |
| 783 | */ |
| 784 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 785 | static int dummy_udc_start(struct usb_gadget_driver *driver, |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 786 | int (*bind)(struct usb_gadget *)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 788 | struct dummy *dum = &the_controller; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | int retval, i; |
| 790 | |
| 791 | if (!dum) |
| 792 | return -EINVAL; |
| 793 | if (dum->driver) |
| 794 | return -EBUSY; |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 795 | if (!bind || !driver->setup || driver->speed == USB_SPEED_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | return -EINVAL; |
| 797 | |
| 798 | /* |
| 799 | * SLAVE side init ... the layer above hardware, which |
| 800 | * can't enumerate without help from the driver we're binding. |
| 801 | */ |
Alan Stern | 5742b0c | 2005-05-02 11:25:17 -0400 | [diff] [blame] | 802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | dum->devstatus = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | |
| 805 | INIT_LIST_HEAD (&dum->gadget.ep_list); |
| 806 | for (i = 0; i < DUMMY_ENDPOINTS; i++) { |
| 807 | struct dummy_ep *ep = &dum->ep [i]; |
| 808 | |
| 809 | if (!ep_name [i]) |
| 810 | break; |
| 811 | ep->ep.name = ep_name [i]; |
| 812 | ep->ep.ops = &dummy_ep_ops; |
| 813 | list_add_tail (&ep->ep.ep_list, &dum->gadget.ep_list); |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 814 | ep->halted = ep->wedged = ep->already_seen = |
| 815 | ep->setup_stage = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | ep->ep.maxpacket = ~0; |
| 817 | ep->last_io = jiffies; |
| 818 | ep->gadget = &dum->gadget; |
| 819 | ep->desc = NULL; |
| 820 | INIT_LIST_HEAD (&ep->queue); |
| 821 | } |
| 822 | |
| 823 | dum->gadget.ep0 = &dum->ep [0].ep; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 824 | dum->gadget.speed = min((u8)driver->speed, (u8)USB_SPEED_HIGH) ; |
| 825 | dum->ep[0].ep.maxpacket = 64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | list_del_init (&dum->ep [0].ep.ep_list); |
| 827 | INIT_LIST_HEAD(&dum->fifo_req.queue); |
| 828 | |
Alan Stern | 5933101 | 2007-11-20 16:28:55 -0500 | [diff] [blame] | 829 | driver->driver.bus = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | dum->driver = driver; |
| 831 | dum->gadget.dev.driver = &driver->driver; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 832 | dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | driver->driver.name); |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 834 | retval = bind(&dum->gadget); |
Alan Stern | 5933101 | 2007-11-20 16:28:55 -0500 | [diff] [blame] | 835 | if (retval) { |
| 836 | dum->driver = NULL; |
| 837 | dum->gadget.dev.driver = NULL; |
| 838 | return retval; |
| 839 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
| 841 | /* khubd will enumerate this in a while */ |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 842 | spin_lock_irq (&dum->lock); |
| 843 | dum->pullup = 1; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 844 | dum->gadget.is_otg = |
| 845 | (dummy_hcd_to_hcd(dum->hs_hcd)->self.otg_port != 0); |
| 846 | set_link_state(dum->hs_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 847 | spin_unlock_irq (&dum->lock); |
Alan Stern | 685eb93 | 2005-05-03 16:27:26 -0400 | [diff] [blame] | 848 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 849 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | return 0; |
| 851 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 853 | static int dummy_udc_stop(struct usb_gadget_driver *driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 855 | struct dummy *dum = &the_controller; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | unsigned long flags; |
| 857 | |
| 858 | if (!dum) |
| 859 | return -ENODEV; |
David Brownell | 6bea476 | 2006-12-05 03:15:33 -0800 | [diff] [blame] | 860 | if (!driver || driver != dum->driver || !driver->unbind) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | return -EINVAL; |
| 862 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 863 | dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | driver->driver.name); |
| 865 | |
| 866 | spin_lock_irqsave (&dum->lock, flags); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 867 | dum->pullup = 0; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 868 | set_link_state(dum->hs_hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | spin_unlock_irqrestore (&dum->lock, flags); |
| 870 | |
| 871 | driver->unbind (&dum->gadget); |
Alan Stern | 5933101 | 2007-11-20 16:28:55 -0500 | [diff] [blame] | 872 | dum->gadget.dev.driver = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | dum->driver = NULL; |
| 874 | |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 875 | spin_lock_irqsave (&dum->lock, flags); |
| 876 | dum->pullup = 0; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 877 | set_link_state(dum->hs_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 878 | spin_unlock_irqrestore (&dum->lock, flags); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 879 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | return 0; |
| 881 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | |
| 883 | #undef is_enabled |
| 884 | |
Alan Stern | cc095b0 | 2005-05-10 15:28:38 -0400 | [diff] [blame] | 885 | /* just declare this in any driver that really need it */ |
| 886 | extern int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode); |
| 887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode) |
| 889 | { |
| 890 | return -ENOSYS; |
| 891 | } |
| 892 | EXPORT_SYMBOL (net2280_set_fifo_mode); |
| 893 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 894 | |
| 895 | /* The gadget structure is stored inside the hcd structure and will be |
| 896 | * released along with it. */ |
| 897 | static void |
| 898 | dummy_gadget_release (struct device *dev) |
| 899 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 900 | return; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 901 | } |
| 902 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 903 | static int dummy_udc_probe (struct platform_device *pdev) |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 904 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 905 | struct dummy *dum = &the_controller; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 906 | int rc; |
| 907 | |
| 908 | dum->gadget.name = gadget_name; |
| 909 | dum->gadget.ops = &dummy_ops; |
| 910 | dum->gadget.is_dualspeed = 1; |
| 911 | |
Kay Sievers | 0031a06 | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 912 | dev_set_name(&dum->gadget.dev, "gadget"); |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 913 | dum->gadget.dev.parent = &pdev->dev; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 914 | dum->gadget.dev.release = dummy_gadget_release; |
| 915 | rc = device_register (&dum->gadget.dev); |
Rahul Ruikar | 75d87cd | 2010-10-07 09:40:45 +0530 | [diff] [blame] | 916 | if (rc < 0) { |
| 917 | put_device(&dum->gadget.dev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 918 | return rc; |
Rahul Ruikar | 75d87cd | 2010-10-07 09:40:45 +0530 | [diff] [blame] | 919 | } |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 920 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 921 | rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget); |
| 922 | if (rc < 0) |
| 923 | goto err_udc; |
| 924 | |
Alan Stern | efd54a3 | 2006-09-25 11:55:56 -0400 | [diff] [blame] | 925 | rc = device_create_file (&dum->gadget.dev, &dev_attr_function); |
| 926 | if (rc < 0) |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 927 | goto err_dev; |
| 928 | platform_set_drvdata(pdev, dum); |
| 929 | return rc; |
| 930 | |
| 931 | err_dev: |
| 932 | usb_del_gadget_udc(&dum->gadget); |
| 933 | err_udc: |
| 934 | device_unregister(&dum->gadget.dev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 935 | return rc; |
| 936 | } |
| 937 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 938 | static int dummy_udc_remove (struct platform_device *pdev) |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 939 | { |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 940 | struct dummy *dum = platform_get_drvdata (pdev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 941 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 942 | usb_del_gadget_udc(&dum->gadget); |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 943 | platform_set_drvdata (pdev, NULL); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 944 | device_remove_file (&dum->gadget.dev, &dev_attr_function); |
| 945 | device_unregister (&dum->gadget.dev); |
| 946 | return 0; |
| 947 | } |
| 948 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 949 | static int dummy_udc_suspend (struct platform_device *pdev, pm_message_t state) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 950 | { |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 951 | struct dummy *dum = platform_get_drvdata(pdev); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 952 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 953 | dev_dbg (&pdev->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 954 | spin_lock_irq (&dum->lock); |
| 955 | dum->udc_suspended = 1; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 956 | set_link_state(dum->hs_hcd); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 957 | spin_unlock_irq (&dum->lock); |
| 958 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 959 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd)); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 960 | return 0; |
| 961 | } |
| 962 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 963 | static int dummy_udc_resume (struct platform_device *pdev) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 964 | { |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 965 | struct dummy *dum = platform_get_drvdata(pdev); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 966 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 967 | dev_dbg (&pdev->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 968 | spin_lock_irq (&dum->lock); |
| 969 | dum->udc_suspended = 0; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 970 | set_link_state(dum->hs_hcd); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 971 | spin_unlock_irq (&dum->lock); |
| 972 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 973 | usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum->hs_hcd)); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 974 | return 0; |
| 975 | } |
| 976 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 977 | static struct platform_driver dummy_udc_driver = { |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 978 | .probe = dummy_udc_probe, |
| 979 | .remove = dummy_udc_remove, |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 980 | .suspend = dummy_udc_suspend, |
| 981 | .resume = dummy_udc_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 982 | .driver = { |
| 983 | .name = (char *) gadget_name, |
| 984 | .owner = THIS_MODULE, |
| 985 | }, |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 986 | }; |
| 987 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | /*-------------------------------------------------------------------------*/ |
| 989 | |
| 990 | /* MASTER/HOST SIDE DRIVER |
| 991 | * |
| 992 | * this uses the hcd framework to hook up to host side drivers. |
| 993 | * its root hub will only have one device, otherwise it acts like |
| 994 | * a normal host controller. |
| 995 | * |
| 996 | * when urbs are queued, they're just stuck on a list that we |
| 997 | * scan in a timer callback. that callback connects writes from |
| 998 | * the host with reads from the device, and so on, based on the |
| 999 | * usb 2.0 rules. |
| 1000 | */ |
| 1001 | |
| 1002 | static int dummy_urb_enqueue ( |
| 1003 | struct usb_hcd *hcd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | struct urb *urb, |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 1005 | gfp_t mem_flags |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | ) { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1007 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | struct urbp *urbp; |
| 1009 | unsigned long flags; |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1010 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | |
| 1012 | if (!urb->transfer_buffer && urb->transfer_buffer_length) |
| 1013 | return -EINVAL; |
| 1014 | |
| 1015 | urbp = kmalloc (sizeof *urbp, mem_flags); |
| 1016 | if (!urbp) |
| 1017 | return -ENOMEM; |
| 1018 | urbp->urb = urb; |
| 1019 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1020 | dum_hcd = hcd_to_dummy_hcd(hcd); |
| 1021 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1022 | rc = usb_hcd_link_urb_to_ep(hcd, urb); |
| 1023 | if (rc) { |
| 1024 | kfree(urbp); |
| 1025 | goto done; |
| 1026 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1028 | if (!dum_hcd->udev) { |
| 1029 | dum_hcd->udev = urb->dev; |
| 1030 | usb_get_dev(dum_hcd->udev); |
| 1031 | } else if (unlikely(dum_hcd->udev != urb->dev)) |
| 1032 | dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1034 | list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | urb->hcpriv = urbp; |
| 1036 | if (usb_pipetype (urb->pipe) == PIPE_CONTROL) |
| 1037 | urb->error_count = 1; /* mark as a new urb */ |
| 1038 | |
| 1039 | /* kick the scheduler, it'll do the rest */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1040 | if (!timer_pending(&dum_hcd->timer)) |
| 1041 | mod_timer(&dum_hcd->timer, jiffies + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1043 | done: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1044 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1045 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | } |
| 1047 | |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1048 | static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1050 | struct dummy_hcd *dum_hcd; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1051 | unsigned long flags; |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1052 | int rc; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1053 | |
| 1054 | /* giveback happens automatically in timer callback, |
| 1055 | * so make sure the callback happens */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1056 | dum_hcd = hcd_to_dummy_hcd(hcd); |
| 1057 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1058 | |
| 1059 | rc = usb_hcd_check_unlink_urb(hcd, urb, status); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1060 | if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && |
| 1061 | !list_empty(&dum_hcd->urbp_list)) |
| 1062 | mod_timer(&dum_hcd->timer, jiffies); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1063 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1064 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1065 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | } |
| 1067 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | /* transfer up to a frame's worth; caller must own lock */ |
| 1069 | static int |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1070 | transfer(struct dummy *dum, struct urb *urb, struct dummy_ep *ep, int limit, |
| 1071 | int *status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | { |
| 1073 | struct dummy_request *req; |
| 1074 | |
| 1075 | top: |
| 1076 | /* if there's no request queued, the device is NAKing; return */ |
| 1077 | list_for_each_entry (req, &ep->queue, queue) { |
| 1078 | unsigned host_len, dev_len, len; |
| 1079 | int is_short, to_host; |
| 1080 | int rescan = 0; |
| 1081 | |
| 1082 | /* 1..N packets of ep->ep.maxpacket each ... the last one |
| 1083 | * may be short (including zero length). |
| 1084 | * |
| 1085 | * writer can send a zlp explicitly (length 0) or implicitly |
| 1086 | * (length mod maxpacket zero, and 'zero' flag); they always |
| 1087 | * terminate reads. |
| 1088 | */ |
| 1089 | host_len = urb->transfer_buffer_length - urb->actual_length; |
| 1090 | dev_len = req->req.length - req->req.actual; |
| 1091 | len = min (host_len, dev_len); |
| 1092 | |
| 1093 | /* FIXME update emulated data toggle too */ |
| 1094 | |
| 1095 | to_host = usb_pipein (urb->pipe); |
| 1096 | if (unlikely (len == 0)) |
| 1097 | is_short = 1; |
| 1098 | else { |
| 1099 | char *ubuf, *rbuf; |
| 1100 | |
| 1101 | /* not enough bandwidth left? */ |
| 1102 | if (limit < ep->ep.maxpacket && limit < len) |
| 1103 | break; |
| 1104 | len = min (len, (unsigned) limit); |
| 1105 | if (len == 0) |
| 1106 | break; |
| 1107 | |
| 1108 | /* use an extra pass for the final short packet */ |
| 1109 | if (len > ep->ep.maxpacket) { |
| 1110 | rescan = 1; |
| 1111 | len -= (len % ep->ep.maxpacket); |
| 1112 | } |
| 1113 | is_short = (len % ep->ep.maxpacket) != 0; |
| 1114 | |
| 1115 | /* else transfer packet(s) */ |
| 1116 | ubuf = urb->transfer_buffer + urb->actual_length; |
| 1117 | rbuf = req->req.buf + req->req.actual; |
| 1118 | if (to_host) |
| 1119 | memcpy (ubuf, rbuf, len); |
| 1120 | else |
| 1121 | memcpy (rbuf, ubuf, len); |
| 1122 | ep->last_io = jiffies; |
| 1123 | |
| 1124 | limit -= len; |
| 1125 | urb->actual_length += len; |
| 1126 | req->req.actual += len; |
| 1127 | } |
| 1128 | |
| 1129 | /* short packets terminate, maybe with overflow/underflow. |
| 1130 | * it's only really an error to write too much. |
| 1131 | * |
| 1132 | * partially filling a buffer optionally blocks queue advances |
| 1133 | * (so completion handlers can clean up the queue) but we don't |
Alan Stern | b0d9efb | 2007-08-21 15:39:21 -0400 | [diff] [blame] | 1134 | * need to emulate such data-in-flight. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | */ |
| 1136 | if (is_short) { |
| 1137 | if (host_len == dev_len) { |
| 1138 | req->req.status = 0; |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1139 | *status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | } else if (to_host) { |
| 1141 | req->req.status = 0; |
| 1142 | if (dev_len > host_len) |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1143 | *status = -EOVERFLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | else |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1145 | *status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | } else if (!to_host) { |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1147 | *status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | if (host_len > dev_len) |
| 1149 | req->req.status = -EOVERFLOW; |
| 1150 | else |
| 1151 | req->req.status = 0; |
| 1152 | } |
| 1153 | |
| 1154 | /* many requests terminate without a short packet */ |
| 1155 | } else { |
| 1156 | if (req->req.length == req->req.actual |
| 1157 | && !req->req.zero) |
| 1158 | req->req.status = 0; |
| 1159 | if (urb->transfer_buffer_length == urb->actual_length |
| 1160 | && !(urb->transfer_flags |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1161 | & URB_ZERO_PACKET)) |
| 1162 | *status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | } |
| 1164 | |
| 1165 | /* device side completion --> continuable */ |
| 1166 | if (req->req.status != -EINPROGRESS) { |
| 1167 | list_del_init (&req->queue); |
| 1168 | |
| 1169 | spin_unlock (&dum->lock); |
| 1170 | req->req.complete (&ep->ep, &req->req); |
| 1171 | spin_lock (&dum->lock); |
| 1172 | |
| 1173 | /* requests might have been unlinked... */ |
| 1174 | rescan = 1; |
| 1175 | } |
| 1176 | |
| 1177 | /* host side completion --> terminate */ |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1178 | if (*status != -EINPROGRESS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | break; |
| 1180 | |
| 1181 | /* rescan to continue with any other queued i/o */ |
| 1182 | if (rescan) |
| 1183 | goto top; |
| 1184 | } |
| 1185 | return limit; |
| 1186 | } |
| 1187 | |
| 1188 | static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) |
| 1189 | { |
| 1190 | int limit = ep->ep.maxpacket; |
| 1191 | |
| 1192 | if (dum->gadget.speed == USB_SPEED_HIGH) { |
| 1193 | int tmp; |
| 1194 | |
| 1195 | /* high bandwidth mode */ |
| 1196 | tmp = le16_to_cpu(ep->desc->wMaxPacketSize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | tmp = (tmp >> 11) & 0x03; |
| 1198 | tmp *= 8 /* applies to entire frame */; |
| 1199 | limit += limit * tmp; |
| 1200 | } |
| 1201 | return limit; |
| 1202 | } |
| 1203 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1204 | #define is_active(dum_hcd) ((dum_hcd->port_status & \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ |
| 1206 | USB_PORT_STAT_SUSPEND)) \ |
| 1207 | == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) |
| 1208 | |
| 1209 | static struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) |
| 1210 | { |
| 1211 | int i; |
| 1212 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1213 | if (!is_active(dum->hs_hcd)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | return NULL; |
| 1215 | if ((address & ~USB_DIR_IN) == 0) |
| 1216 | return &dum->ep [0]; |
| 1217 | for (i = 1; i < DUMMY_ENDPOINTS; i++) { |
| 1218 | struct dummy_ep *ep = &dum->ep [i]; |
| 1219 | |
| 1220 | if (!ep->desc) |
| 1221 | continue; |
| 1222 | if (ep->desc->bEndpointAddress == address) |
| 1223 | return ep; |
| 1224 | } |
| 1225 | return NULL; |
| 1226 | } |
| 1227 | |
| 1228 | #undef is_active |
| 1229 | |
| 1230 | #define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) |
| 1231 | #define Dev_InRequest (Dev_Request | USB_DIR_IN) |
| 1232 | #define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) |
| 1233 | #define Intf_InRequest (Intf_Request | USB_DIR_IN) |
| 1234 | #define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) |
| 1235 | #define Ep_InRequest (Ep_Request | USB_DIR_IN) |
| 1236 | |
Tatyana Brokhman | 8be8a9d | 2010-11-01 17:38:05 +0200 | [diff] [blame] | 1237 | |
| 1238 | /** |
| 1239 | * handle_control_request() - handles all control transfers |
| 1240 | * @dum: pointer to dummy (the_controller) |
| 1241 | * @urb: the urb request to handle |
| 1242 | * @setup: pointer to the setup data for a USB device control |
| 1243 | * request |
| 1244 | * @status: pointer to request handling status |
| 1245 | * |
| 1246 | * Return 0 - if the request was handled |
| 1247 | * 1 - if the request wasn't handles |
| 1248 | * error code on error |
| 1249 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1250 | static int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb, |
Tatyana Brokhman | 8be8a9d | 2010-11-01 17:38:05 +0200 | [diff] [blame] | 1251 | struct usb_ctrlrequest *setup, |
| 1252 | int *status) |
| 1253 | { |
| 1254 | struct dummy_ep *ep2; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1255 | struct dummy *dum = dum_hcd->dum; |
Tatyana Brokhman | 8be8a9d | 2010-11-01 17:38:05 +0200 | [diff] [blame] | 1256 | int ret_val = 1; |
| 1257 | unsigned w_index; |
| 1258 | unsigned w_value; |
| 1259 | |
| 1260 | w_index = le16_to_cpu(setup->wIndex); |
| 1261 | w_value = le16_to_cpu(setup->wValue); |
| 1262 | switch (setup->bRequest) { |
| 1263 | case USB_REQ_SET_ADDRESS: |
| 1264 | if (setup->bRequestType != Dev_Request) |
| 1265 | break; |
| 1266 | dum->address = w_value; |
| 1267 | *status = 0; |
| 1268 | dev_dbg(udc_dev(dum), "set_address = %d\n", |
| 1269 | w_value); |
| 1270 | ret_val = 0; |
| 1271 | break; |
| 1272 | case USB_REQ_SET_FEATURE: |
| 1273 | if (setup->bRequestType == Dev_Request) { |
| 1274 | ret_val = 0; |
| 1275 | switch (w_value) { |
| 1276 | case USB_DEVICE_REMOTE_WAKEUP: |
| 1277 | break; |
| 1278 | case USB_DEVICE_B_HNP_ENABLE: |
| 1279 | dum->gadget.b_hnp_enable = 1; |
| 1280 | break; |
| 1281 | case USB_DEVICE_A_HNP_SUPPORT: |
| 1282 | dum->gadget.a_hnp_support = 1; |
| 1283 | break; |
| 1284 | case USB_DEVICE_A_ALT_HNP_SUPPORT: |
| 1285 | dum->gadget.a_alt_hnp_support = 1; |
| 1286 | break; |
| 1287 | default: |
| 1288 | ret_val = -EOPNOTSUPP; |
| 1289 | } |
| 1290 | if (ret_val == 0) { |
| 1291 | dum->devstatus |= (1 << w_value); |
| 1292 | *status = 0; |
| 1293 | } |
| 1294 | } else if (setup->bRequestType == Ep_Request) { |
| 1295 | /* endpoint halt */ |
| 1296 | ep2 = find_endpoint(dum, w_index); |
| 1297 | if (!ep2 || ep2->ep.name == ep0name) { |
| 1298 | ret_val = -EOPNOTSUPP; |
| 1299 | break; |
| 1300 | } |
| 1301 | ep2->halted = 1; |
| 1302 | ret_val = 0; |
| 1303 | *status = 0; |
| 1304 | } |
| 1305 | break; |
| 1306 | case USB_REQ_CLEAR_FEATURE: |
| 1307 | if (setup->bRequestType == Dev_Request) { |
| 1308 | ret_val = 0; |
| 1309 | switch (w_value) { |
| 1310 | case USB_DEVICE_REMOTE_WAKEUP: |
| 1311 | w_value = USB_DEVICE_REMOTE_WAKEUP; |
| 1312 | break; |
| 1313 | default: |
| 1314 | ret_val = -EOPNOTSUPP; |
| 1315 | break; |
| 1316 | } |
| 1317 | if (ret_val == 0) { |
| 1318 | dum->devstatus &= ~(1 << w_value); |
| 1319 | *status = 0; |
| 1320 | } |
| 1321 | } else if (setup->bRequestType == Ep_Request) { |
| 1322 | /* endpoint halt */ |
| 1323 | ep2 = find_endpoint(dum, w_index); |
| 1324 | if (!ep2) { |
| 1325 | ret_val = -EOPNOTSUPP; |
| 1326 | break; |
| 1327 | } |
| 1328 | if (!ep2->wedged) |
| 1329 | ep2->halted = 0; |
| 1330 | ret_val = 0; |
| 1331 | *status = 0; |
| 1332 | } |
| 1333 | break; |
| 1334 | case USB_REQ_GET_STATUS: |
| 1335 | if (setup->bRequestType == Dev_InRequest |
| 1336 | || setup->bRequestType == Intf_InRequest |
| 1337 | || setup->bRequestType == Ep_InRequest) { |
| 1338 | char *buf; |
| 1339 | /* |
| 1340 | * device: remote wakeup, selfpowered |
| 1341 | * interface: nothing |
| 1342 | * endpoint: halt |
| 1343 | */ |
| 1344 | buf = (char *)urb->transfer_buffer; |
| 1345 | if (urb->transfer_buffer_length > 0) { |
| 1346 | if (setup->bRequestType == Ep_InRequest) { |
| 1347 | ep2 = find_endpoint(dum, w_index); |
| 1348 | if (!ep2) { |
| 1349 | ret_val = -EOPNOTSUPP; |
| 1350 | break; |
| 1351 | } |
| 1352 | buf[0] = ep2->halted; |
| 1353 | } else if (setup->bRequestType == |
| 1354 | Dev_InRequest) { |
| 1355 | buf[0] = (u8)dum->devstatus; |
| 1356 | } else |
| 1357 | buf[0] = 0; |
| 1358 | } |
| 1359 | if (urb->transfer_buffer_length > 1) |
| 1360 | buf[1] = 0; |
| 1361 | urb->actual_length = min_t(u32, 2, |
| 1362 | urb->transfer_buffer_length); |
| 1363 | ret_val = 0; |
| 1364 | *status = 0; |
| 1365 | } |
| 1366 | break; |
| 1367 | } |
| 1368 | return ret_val; |
| 1369 | } |
| 1370 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | /* drive both sides of the transfers; looks like irq handlers to |
| 1372 | * both drivers except the callbacks aren't in_irq(). |
| 1373 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1374 | static void dummy_timer(unsigned long _dum_hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1376 | struct dummy_hcd *dum_hcd = (struct dummy_hcd *) _dum_hcd; |
| 1377 | struct dummy *dum = dum_hcd->dum; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | struct urbp *urbp, *tmp; |
| 1379 | unsigned long flags; |
| 1380 | int limit, total; |
| 1381 | int i; |
| 1382 | |
| 1383 | /* simplistic model for one frame's bandwidth */ |
| 1384 | switch (dum->gadget.speed) { |
| 1385 | case USB_SPEED_LOW: |
| 1386 | total = 8/*bytes*/ * 12/*packets*/; |
| 1387 | break; |
| 1388 | case USB_SPEED_FULL: |
| 1389 | total = 64/*bytes*/ * 19/*packets*/; |
| 1390 | break; |
| 1391 | case USB_SPEED_HIGH: |
| 1392 | total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; |
| 1393 | break; |
| 1394 | default: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1395 | dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | return; |
| 1397 | } |
| 1398 | |
| 1399 | /* FIXME if HZ != 1000 this will probably misbehave ... */ |
| 1400 | |
| 1401 | /* look at each urb queued by the host side driver */ |
| 1402 | spin_lock_irqsave (&dum->lock, flags); |
| 1403 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1404 | if (!dum_hcd->udev) { |
| 1405 | dev_err(dummy_dev(dum_hcd), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | "timer fired with no URBs pending?\n"); |
| 1407 | spin_unlock_irqrestore (&dum->lock, flags); |
| 1408 | return; |
| 1409 | } |
| 1410 | |
| 1411 | for (i = 0; i < DUMMY_ENDPOINTS; i++) { |
| 1412 | if (!ep_name [i]) |
| 1413 | break; |
| 1414 | dum->ep [i].already_seen = 0; |
| 1415 | } |
| 1416 | |
| 1417 | restart: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1418 | list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | struct urb *urb; |
| 1420 | struct dummy_request *req; |
| 1421 | u8 address; |
| 1422 | struct dummy_ep *ep = NULL; |
| 1423 | int type; |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1424 | int status = -EINPROGRESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | |
| 1426 | urb = urbp->urb; |
Alan Stern | eb23105 | 2007-08-21 15:40:36 -0400 | [diff] [blame] | 1427 | if (urb->unlinked) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | goto return_urb; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1429 | else if (dum_hcd->rh_state != DUMMY_RH_RUNNING) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1430 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | type = usb_pipetype (urb->pipe); |
| 1432 | |
| 1433 | /* used up this frame's non-periodic bandwidth? |
| 1434 | * FIXME there's infinite bandwidth for control and |
| 1435 | * periodic transfers ... unrealistic. |
| 1436 | */ |
| 1437 | if (total <= 0 && type == PIPE_BULK) |
| 1438 | continue; |
| 1439 | |
| 1440 | /* find the gadget's ep for this request (if configured) */ |
| 1441 | address = usb_pipeendpoint (urb->pipe); |
| 1442 | if (usb_pipein (urb->pipe)) |
| 1443 | address |= USB_DIR_IN; |
| 1444 | ep = find_endpoint(dum, address); |
| 1445 | if (!ep) { |
| 1446 | /* set_configuration() disagreement */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1447 | dev_dbg(dummy_dev(dum_hcd), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | "no ep configured for urb %p\n", |
| 1449 | urb); |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1450 | status = -EPROTO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | goto return_urb; |
| 1452 | } |
| 1453 | |
| 1454 | if (ep->already_seen) |
| 1455 | continue; |
| 1456 | ep->already_seen = 1; |
| 1457 | if (ep == &dum->ep [0] && urb->error_count) { |
| 1458 | ep->setup_stage = 1; /* a new urb */ |
| 1459 | urb->error_count = 0; |
| 1460 | } |
| 1461 | if (ep->halted && !ep->setup_stage) { |
| 1462 | /* NOTE: must not be iso! */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1463 | dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | ep->ep.name, urb); |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1465 | status = -EPIPE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | goto return_urb; |
| 1467 | } |
| 1468 | /* FIXME make sure both ends agree on maxpacket */ |
| 1469 | |
| 1470 | /* handle control requests */ |
| 1471 | if (ep == &dum->ep [0] && ep->setup_stage) { |
| 1472 | struct usb_ctrlrequest setup; |
| 1473 | int value = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | |
| 1475 | setup = *(struct usb_ctrlrequest*) urb->setup_packet; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | /* paranoia, in case of stale queued data */ |
| 1477 | list_for_each_entry (req, &ep->queue, queue) { |
| 1478 | list_del_init (&req->queue); |
| 1479 | req->req.status = -EOVERFLOW; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1480 | dev_dbg (udc_dev(dum), "stale req = %p\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | req); |
| 1482 | |
| 1483 | spin_unlock (&dum->lock); |
| 1484 | req->req.complete (&ep->ep, &req->req); |
| 1485 | spin_lock (&dum->lock); |
| 1486 | ep->already_seen = 0; |
| 1487 | goto restart; |
| 1488 | } |
| 1489 | |
| 1490 | /* gadget driver never sees set_address or operations |
| 1491 | * on standard feature flags. some hardware doesn't |
| 1492 | * even expose them. |
| 1493 | */ |
| 1494 | ep->last_io = jiffies; |
| 1495 | ep->setup_stage = 0; |
| 1496 | ep->halted = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1498 | value = handle_control_request(dum_hcd, urb, &setup, |
Tatyana Brokhman | 8be8a9d | 2010-11-01 17:38:05 +0200 | [diff] [blame] | 1499 | &status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | |
| 1501 | /* gadget driver handles all other requests. block |
| 1502 | * until setup() returns; no reentrancy issues etc. |
| 1503 | */ |
| 1504 | if (value > 0) { |
| 1505 | spin_unlock (&dum->lock); |
| 1506 | value = dum->driver->setup (&dum->gadget, |
| 1507 | &setup); |
| 1508 | spin_lock (&dum->lock); |
| 1509 | |
| 1510 | if (value >= 0) { |
| 1511 | /* no delays (max 64KB data stage) */ |
| 1512 | limit = 64*1024; |
| 1513 | goto treat_control_like_bulk; |
| 1514 | } |
| 1515 | /* error, see below */ |
| 1516 | } |
| 1517 | |
| 1518 | if (value < 0) { |
| 1519 | if (value != -EOPNOTSUPP) |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1520 | dev_dbg (udc_dev(dum), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | "setup --> %d\n", |
| 1522 | value); |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1523 | status = -EPIPE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | urb->actual_length = 0; |
| 1525 | } |
| 1526 | |
| 1527 | goto return_urb; |
| 1528 | } |
| 1529 | |
| 1530 | /* non-control requests */ |
| 1531 | limit = total; |
| 1532 | switch (usb_pipetype (urb->pipe)) { |
| 1533 | case PIPE_ISOCHRONOUS: |
| 1534 | /* FIXME is it urb->interval since the last xfer? |
| 1535 | * use urb->iso_frame_desc[i]. |
| 1536 | * complete whether or not ep has requests queued. |
| 1537 | * report random errors, to debug drivers. |
| 1538 | */ |
| 1539 | limit = max (limit, periodic_bytes (dum, ep)); |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1540 | status = -ENOSYS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | break; |
| 1542 | |
| 1543 | case PIPE_INTERRUPT: |
| 1544 | /* FIXME is it urb->interval since the last xfer? |
| 1545 | * this almost certainly polls too fast. |
| 1546 | */ |
| 1547 | limit = max (limit, periodic_bytes (dum, ep)); |
| 1548 | /* FALLTHROUGH */ |
| 1549 | |
| 1550 | // case PIPE_BULK: case PIPE_CONTROL: |
| 1551 | default: |
| 1552 | treat_control_like_bulk: |
| 1553 | ep->last_io = jiffies; |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1554 | total = transfer(dum, urb, ep, limit, &status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | break; |
| 1556 | } |
| 1557 | |
| 1558 | /* incomplete transfer? */ |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1559 | if (status == -EINPROGRESS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | continue; |
| 1561 | |
| 1562 | return_urb: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | list_del (&urbp->urbp_list); |
| 1564 | kfree (urbp); |
| 1565 | if (ep) |
| 1566 | ep->already_seen = ep->setup_stage = 0; |
| 1567 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1568 | usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | spin_unlock (&dum->lock); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1570 | usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | spin_lock (&dum->lock); |
| 1572 | |
| 1573 | goto restart; |
| 1574 | } |
| 1575 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1576 | if (list_empty(&dum_hcd->urbp_list)) { |
| 1577 | usb_put_dev(dum_hcd->udev); |
| 1578 | dum_hcd->udev = NULL; |
| 1579 | } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1580 | /* want a 1 msec delay here */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1581 | mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | } |
| 1583 | |
| 1584 | spin_unlock_irqrestore (&dum->lock, flags); |
| 1585 | } |
| 1586 | |
| 1587 | /*-------------------------------------------------------------------------*/ |
| 1588 | |
| 1589 | #define PORT_C_MASK \ |
Alan Stern | c2db8b5 | 2005-04-29 16:30:48 -0400 | [diff] [blame] | 1590 | ((USB_PORT_STAT_C_CONNECTION \ |
| 1591 | | USB_PORT_STAT_C_ENABLE \ |
| 1592 | | USB_PORT_STAT_C_SUSPEND \ |
| 1593 | | USB_PORT_STAT_C_OVERCURRENT \ |
| 1594 | | USB_PORT_STAT_C_RESET) << 16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | |
| 1596 | static int dummy_hub_status (struct usb_hcd *hcd, char *buf) |
| 1597 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1598 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | unsigned long flags; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1600 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1602 | dum_hcd = hcd_to_dummy_hcd(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1604 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
Alan Stern | 541c7d4 | 2010-06-22 16:39:10 -0400 | [diff] [blame] | 1605 | if (!HCD_HW_ACCESSIBLE(hcd)) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1606 | goto done; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1607 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1608 | if (dum_hcd->resuming && time_after_eq(jiffies, dum_hcd->re_timeout)) { |
| 1609 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); |
| 1610 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; |
| 1611 | set_link_state(dum_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1612 | } |
| 1613 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1614 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | *buf = (1 << 1); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1616 | dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n", |
| 1617 | dum_hcd->port_status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | retval = 1; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1619 | if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1620 | usb_hcd_resume_root_hub (hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | } |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1622 | done: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1623 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1624 | return retval; |
| 1625 | } |
| 1626 | |
| 1627 | static inline void |
| 1628 | hub_descriptor (struct usb_hub_descriptor *desc) |
| 1629 | { |
| 1630 | memset (desc, 0, sizeof *desc); |
| 1631 | desc->bDescriptorType = 0x29; |
| 1632 | desc->bDescLength = 9; |
Al Viro | fd05e72 | 2008-04-28 07:00:16 +0100 | [diff] [blame] | 1633 | desc->wHubCharacteristics = cpu_to_le16(0x0001); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | desc->bNbrPorts = 1; |
John Youn | dbe79bb | 2001-09-17 00:00:00 -0700 | [diff] [blame] | 1635 | desc->u.hs.DeviceRemovable[0] = 0xff; |
| 1636 | desc->u.hs.DeviceRemovable[1] = 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | } |
| 1638 | |
| 1639 | static int dummy_hub_control ( |
| 1640 | struct usb_hcd *hcd, |
| 1641 | u16 typeReq, |
| 1642 | u16 wValue, |
| 1643 | u16 wIndex, |
| 1644 | char *buf, |
| 1645 | u16 wLength |
| 1646 | ) { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1647 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1648 | int retval = 0; |
| 1649 | unsigned long flags; |
| 1650 | |
Alan Stern | 541c7d4 | 2010-06-22 16:39:10 -0400 | [diff] [blame] | 1651 | if (!HCD_HW_ACCESSIBLE(hcd)) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1652 | return -ETIMEDOUT; |
| 1653 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1654 | dum_hcd = hcd_to_dummy_hcd(hcd); |
| 1655 | |
| 1656 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | switch (typeReq) { |
| 1658 | case ClearHubFeature: |
| 1659 | break; |
| 1660 | case ClearPortFeature: |
| 1661 | switch (wValue) { |
| 1662 | case USB_PORT_FEAT_SUSPEND: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1663 | if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | /* 20msec resume signaling */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1665 | dum_hcd->resuming = 1; |
| 1666 | dum_hcd->re_timeout = jiffies + |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1667 | msecs_to_jiffies(20); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | } |
| 1669 | break; |
| 1670 | case USB_PORT_FEAT_POWER: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1671 | if (dum_hcd->port_status & USB_PORT_STAT_POWER) |
| 1672 | dev_dbg(dummy_dev(dum_hcd), "power-off\n"); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1673 | /* FALLS THROUGH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | default: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1675 | dum_hcd->port_status &= ~(1 << wValue); |
| 1676 | set_link_state(dum_hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | } |
| 1678 | break; |
| 1679 | case GetHubDescriptor: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1680 | hub_descriptor((struct usb_hub_descriptor *) buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | break; |
| 1682 | case GetHubStatus: |
Harvey Harrison | 551509d | 2009-02-11 14:11:36 -0800 | [diff] [blame] | 1683 | *(__le32 *) buf = cpu_to_le32 (0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | break; |
| 1685 | case GetPortStatus: |
| 1686 | if (wIndex != 1) |
| 1687 | retval = -EPIPE; |
| 1688 | |
| 1689 | /* whoever resets or resumes must GetPortStatus to |
| 1690 | * complete it!! |
| 1691 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1692 | if (dum_hcd->resuming && |
| 1693 | time_after_eq(jiffies, dum_hcd->re_timeout)) { |
| 1694 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); |
| 1695 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1697 | if ((dum_hcd->port_status & USB_PORT_STAT_RESET) != 0 && |
| 1698 | time_after_eq(jiffies, dum_hcd->re_timeout)) { |
| 1699 | dum_hcd->port_status |= (USB_PORT_STAT_C_RESET << 16); |
| 1700 | dum_hcd->port_status &= ~USB_PORT_STAT_RESET; |
| 1701 | if (dum_hcd->dum->pullup) { |
| 1702 | dum_hcd->port_status |= USB_PORT_STAT_ENABLE; |
| 1703 | switch (dum_hcd->dum->gadget.speed) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | case USB_SPEED_HIGH: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1705 | dum_hcd->port_status |= |
| 1706 | USB_PORT_STAT_HIGH_SPEED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1707 | break; |
| 1708 | case USB_SPEED_LOW: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1709 | dum_hcd->dum->gadget.ep0-> |
| 1710 | maxpacket = 8; |
| 1711 | dum_hcd->port_status |= |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | USB_PORT_STAT_LOW_SPEED; |
| 1713 | break; |
| 1714 | default: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1715 | dum_hcd->dum->gadget.speed = |
| 1716 | USB_SPEED_FULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | break; |
| 1718 | } |
| 1719 | } |
| 1720 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1721 | set_link_state(dum_hcd); |
| 1722 | ((__le16 *) buf)[0] = cpu_to_le16 (dum_hcd->port_status); |
| 1723 | ((__le16 *) buf)[1] = cpu_to_le16 (dum_hcd->port_status >> 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | break; |
| 1725 | case SetHubFeature: |
| 1726 | retval = -EPIPE; |
| 1727 | break; |
| 1728 | case SetPortFeature: |
| 1729 | switch (wValue) { |
| 1730 | case USB_PORT_FEAT_SUSPEND: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1731 | if (dum_hcd->active) { |
| 1732 | dum_hcd->port_status |= USB_PORT_STAT_SUSPEND; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1733 | |
| 1734 | /* HNP would happen here; for now we |
| 1735 | * assume b_bus_req is always true. |
| 1736 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1737 | set_link_state(dum_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1738 | if (((1 << USB_DEVICE_B_HNP_ENABLE) |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1739 | & dum_hcd->dum->devstatus) != 0) |
| 1740 | dev_dbg(dummy_dev(dum_hcd), |
Alan Stern | 5742b0c | 2005-05-02 11:25:17 -0400 | [diff] [blame] | 1741 | "no HNP yet!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1742 | } |
| 1743 | break; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1744 | case USB_PORT_FEAT_POWER: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1745 | dum_hcd->port_status |= USB_PORT_STAT_POWER; |
| 1746 | set_link_state(dum_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1747 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | case USB_PORT_FEAT_RESET: |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1749 | /* if it's already enabled, disable */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1750 | dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1751 | | USB_PORT_STAT_LOW_SPEED |
| 1752 | | USB_PORT_STAT_HIGH_SPEED); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1753 | /* |
| 1754 | * We want to reset device status. All but the |
| 1755 | * Self powered feature |
| 1756 | */ |
| 1757 | dum_hcd->dum->devstatus &= |
| 1758 | (1 << USB_DEVICE_SELF_POWERED); |
| 1759 | dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1760 | /* FALLS THROUGH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | default: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1762 | if ((dum_hcd->port_status & |
| 1763 | USB_PORT_STAT_POWER) != 0) { |
| 1764 | dum_hcd->port_status |= (1 << wValue); |
| 1765 | set_link_state(dum_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1766 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | } |
| 1768 | break; |
| 1769 | |
| 1770 | default: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1771 | dev_dbg(dummy_dev(dum_hcd), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | "hub control req%04x v%04x i%04x l%d\n", |
| 1773 | typeReq, wValue, wIndex, wLength); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | /* "protocol stall" on error */ |
| 1775 | retval = -EPIPE; |
| 1776 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1777 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Alan Stern | 685eb93 | 2005-05-03 16:27:26 -0400 | [diff] [blame] | 1778 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1779 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) |
Alan Stern | 685eb93 | 2005-05-03 16:27:26 -0400 | [diff] [blame] | 1780 | usb_hcd_poll_rh_status (hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | return retval; |
| 1782 | } |
| 1783 | |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1784 | static int dummy_bus_suspend (struct usb_hcd *hcd) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1785 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1786 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1787 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1788 | dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 1789 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1790 | spin_lock_irq(&dum_hcd->dum->lock); |
| 1791 | dum_hcd->rh_state = DUMMY_RH_SUSPENDED; |
| 1792 | set_link_state(dum_hcd); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 1793 | hcd->state = HC_STATE_SUSPENDED; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1794 | spin_unlock_irq(&dum_hcd->dum->lock); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1795 | return 0; |
| 1796 | } |
| 1797 | |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1798 | static int dummy_bus_resume (struct usb_hcd *hcd) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1799 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1800 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 1801 | int rc = 0; |
| 1802 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1803 | dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1804 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1805 | spin_lock_irq(&dum_hcd->dum->lock); |
Alan Stern | 541c7d4 | 2010-06-22 16:39:10 -0400 | [diff] [blame] | 1806 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
Alan Stern | cfa59da | 2007-06-21 16:25:35 -0400 | [diff] [blame] | 1807 | rc = -ESHUTDOWN; |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 1808 | } else { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1809 | dum_hcd->rh_state = DUMMY_RH_RUNNING; |
| 1810 | set_link_state(dum_hcd); |
| 1811 | if (!list_empty(&dum_hcd->urbp_list)) |
| 1812 | mod_timer(&dum_hcd->timer, jiffies); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 1813 | hcd->state = HC_STATE_RUNNING; |
| 1814 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1815 | spin_unlock_irq(&dum_hcd->dum->lock); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 1816 | return rc; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1817 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | |
| 1819 | /*-------------------------------------------------------------------------*/ |
| 1820 | |
| 1821 | static inline ssize_t |
| 1822 | show_urb (char *buf, size_t size, struct urb *urb) |
| 1823 | { |
| 1824 | int ep = usb_pipeendpoint (urb->pipe); |
| 1825 | |
| 1826 | return snprintf (buf, size, |
| 1827 | "urb/%p %s ep%d%s%s len %d/%d\n", |
| 1828 | urb, |
| 1829 | ({ char *s; |
| 1830 | switch (urb->dev->speed) { |
Tatyana Brokhman | 7c884fe | 2011-06-28 16:33:52 +0300 | [diff] [blame] | 1831 | case USB_SPEED_LOW: |
| 1832 | s = "ls"; |
| 1833 | break; |
| 1834 | case USB_SPEED_FULL: |
| 1835 | s = "fs"; |
| 1836 | break; |
| 1837 | case USB_SPEED_HIGH: |
| 1838 | s = "hs"; |
| 1839 | break; |
| 1840 | default: |
| 1841 | s = "?"; |
| 1842 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | }; s; }), |
| 1844 | ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", |
| 1845 | ({ char *s; \ |
| 1846 | switch (usb_pipetype (urb->pipe)) { \ |
Tatyana Brokhman | 7c884fe | 2011-06-28 16:33:52 +0300 | [diff] [blame] | 1847 | case PIPE_CONTROL: \ |
| 1848 | s = ""; \ |
| 1849 | break; \ |
| 1850 | case PIPE_BULK: \ |
| 1851 | s = "-bulk"; \ |
| 1852 | break; \ |
| 1853 | case PIPE_INTERRUPT: \ |
| 1854 | s = "-int"; \ |
| 1855 | break; \ |
| 1856 | default: \ |
| 1857 | s = "-iso"; \ |
| 1858 | break; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | }; s;}), |
| 1860 | urb->actual_length, urb->transfer_buffer_length); |
| 1861 | } |
| 1862 | |
| 1863 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 1864 | show_urbs (struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | { |
| 1866 | struct usb_hcd *hcd = dev_get_drvdata (dev); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1867 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | struct urbp *urbp; |
| 1869 | size_t size = 0; |
| 1870 | unsigned long flags; |
| 1871 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1872 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
| 1873 | list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | size_t temp; |
| 1875 | |
| 1876 | temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); |
| 1877 | buf += temp; |
| 1878 | size += temp; |
| 1879 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1880 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | |
| 1882 | return size; |
| 1883 | } |
| 1884 | static DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); |
| 1885 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1886 | static int dummy_start(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1888 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1889 | |
| 1890 | /* |
| 1891 | * MASTER side init ... we emulate a root hub that'll only ever |
| 1892 | * talk to one device (the slave side). Also appears in sysfs, |
| 1893 | * just like more familiar pci-based HCDs. |
| 1894 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1895 | spin_lock_init(&dum_hcd->dum->lock); |
| 1896 | init_timer(&dum_hcd->timer); |
| 1897 | dum_hcd->timer.function = dummy_timer; |
| 1898 | dum_hcd->timer.data = (unsigned long)dum_hcd; |
| 1899 | dum_hcd->rh_state = DUMMY_RH_RUNNING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1900 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1901 | INIT_LIST_HEAD(&dum_hcd->urbp_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | |
Alan Stern | caf29f6 | 2007-12-06 11:10:39 -0500 | [diff] [blame] | 1903 | hcd->power_budget = POWER_BUDGET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | hcd->state = HC_STATE_RUNNING; |
Alan Stern | 685eb93 | 2005-05-03 16:27:26 -0400 | [diff] [blame] | 1905 | hcd->uses_new_polling = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | |
Alan Stern | 5742b0c | 2005-05-02 11:25:17 -0400 | [diff] [blame] | 1907 | #ifdef CONFIG_USB_OTG |
| 1908 | hcd->self.otg_port = 1; |
| 1909 | #endif |
| 1910 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1912 | return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | } |
| 1914 | |
| 1915 | static void dummy_stop (struct usb_hcd *hcd) |
| 1916 | { |
| 1917 | struct dummy *dum; |
| 1918 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1919 | dum = (hcd_to_dummy_hcd(hcd))->dum; |
| 1920 | device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); |
| 1921 | usb_gadget_unregister_driver(dum->driver); |
| 1922 | dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | } |
| 1924 | |
| 1925 | /*-------------------------------------------------------------------------*/ |
| 1926 | |
| 1927 | static int dummy_h_get_frame (struct usb_hcd *hcd) |
| 1928 | { |
| 1929 | return dummy_g_get_frame (NULL); |
| 1930 | } |
| 1931 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1932 | static int dummy_setup(struct usb_hcd *hcd) |
| 1933 | { |
| 1934 | if (usb_hcd_is_primary_hcd(hcd)) { |
| 1935 | the_controller.hs_hcd = hcd_to_dummy_hcd(hcd); |
| 1936 | the_controller.hs_hcd->dum = &the_controller; |
| 1937 | /* Mark the first roothub as being USB 2.0. */ |
| 1938 | hcd->speed = HCD_USB2; |
| 1939 | hcd->self.root_hub->speed = USB_SPEED_HIGH; |
| 1940 | } |
| 1941 | return 0; |
| 1942 | } |
| 1943 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | static const struct hc_driver dummy_hcd = { |
| 1945 | .description = (char *) driver_name, |
| 1946 | .product_desc = "Dummy host controller", |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1947 | .hcd_priv_size = sizeof(struct dummy_hcd), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | |
| 1949 | .flags = HCD_USB2, |
| 1950 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1951 | .reset = dummy_setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | .start = dummy_start, |
| 1953 | .stop = dummy_stop, |
| 1954 | |
| 1955 | .urb_enqueue = dummy_urb_enqueue, |
| 1956 | .urb_dequeue = dummy_urb_dequeue, |
| 1957 | |
| 1958 | .get_frame_number = dummy_h_get_frame, |
| 1959 | |
| 1960 | .hub_status_data = dummy_hub_status, |
| 1961 | .hub_control = dummy_hub_control, |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 1962 | .bus_suspend = dummy_bus_suspend, |
| 1963 | .bus_resume = dummy_bus_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | }; |
| 1965 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1966 | static int dummy_hcd_probe(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1968 | struct usb_hcd *hs_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1969 | int retval; |
| 1970 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1971 | dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1972 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1973 | hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev)); |
| 1974 | if (!hs_hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | return -ENOMEM; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1976 | hs_hcd->has_tt = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1978 | retval = usb_add_hcd(hs_hcd, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | if (retval != 0) { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1980 | usb_put_hcd(hs_hcd); |
| 1981 | the_controller.hs_hcd = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1982 | } |
| 1983 | return retval; |
| 1984 | } |
| 1985 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1986 | static int dummy_hcd_remove(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1988 | struct dummy *dum; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 1990 | dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum; |
| 1991 | usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); |
| 1992 | usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); |
| 1993 | the_controller.hs_hcd = NULL; |
| 1994 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1995 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | } |
| 1997 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1998 | static int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1999 | { |
| 2000 | struct usb_hcd *hcd; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 2001 | struct dummy_hcd *dum_hcd; |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2002 | int rc = 0; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2003 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 2004 | dev_dbg (&pdev->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2005 | |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2006 | hcd = platform_get_drvdata (pdev); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 2007 | dum_hcd = hcd_to_dummy_hcd(hcd); |
| 2008 | if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2009 | dev_warn(&pdev->dev, "Root hub isn't suspended!\n"); |
| 2010 | rc = -EBUSY; |
| 2011 | } else |
| 2012 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 2013 | return rc; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2014 | } |
| 2015 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 2016 | static int dummy_hcd_resume (struct platform_device *pdev) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2017 | { |
| 2018 | struct usb_hcd *hcd; |
| 2019 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 2020 | dev_dbg (&pdev->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2021 | |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2022 | hcd = platform_get_drvdata (pdev); |
| 2023 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2024 | usb_hcd_poll_rh_status (hcd); |
| 2025 | return 0; |
| 2026 | } |
| 2027 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2028 | static struct platform_driver dummy_hcd_driver = { |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2029 | .probe = dummy_hcd_probe, |
| 2030 | .remove = dummy_hcd_remove, |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2031 | .suspend = dummy_hcd_suspend, |
| 2032 | .resume = dummy_hcd_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2033 | .driver = { |
| 2034 | .name = (char *) driver_name, |
| 2035 | .owner = THIS_MODULE, |
| 2036 | }, |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2037 | }; |
| 2038 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | /*-------------------------------------------------------------------------*/ |
| 2040 | |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2041 | static struct platform_device *the_udc_pdev; |
| 2042 | static struct platform_device *the_hcd_pdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | |
| 2044 | static int __init init (void) |
| 2045 | { |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2046 | int retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2047 | |
| 2048 | if (usb_disabled ()) |
| 2049 | return -ENODEV; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2050 | |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2051 | the_hcd_pdev = platform_device_alloc(driver_name, -1); |
| 2052 | if (!the_hcd_pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2053 | return retval; |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2054 | the_udc_pdev = platform_device_alloc(gadget_name, -1); |
| 2055 | if (!the_udc_pdev) |
| 2056 | goto err_alloc_udc; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2057 | |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2058 | retval = platform_driver_register(&dummy_hcd_driver); |
| 2059 | if (retval < 0) |
| 2060 | goto err_register_hcd_driver; |
| 2061 | retval = platform_driver_register(&dummy_udc_driver); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2062 | if (retval < 0) |
| 2063 | goto err_register_udc_driver; |
| 2064 | |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2065 | retval = platform_device_add(the_hcd_pdev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2066 | if (retval < 0) |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2067 | goto err_add_hcd; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame^] | 2068 | if (!the_controller.hs_hcd) { |
Sebastian Andrzej Siewior | 865835f | 2011-04-15 20:37:06 +0200 | [diff] [blame] | 2069 | /* |
| 2070 | * The hcd was added successfully but its probe function failed |
| 2071 | * for some reason. |
| 2072 | */ |
| 2073 | retval = -EINVAL; |
| 2074 | goto err_add_udc; |
| 2075 | } |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2076 | retval = platform_device_add(the_udc_pdev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2077 | if (retval < 0) |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2078 | goto err_add_udc; |
Sebastian Andrzej Siewior | 865835f | 2011-04-15 20:37:06 +0200 | [diff] [blame] | 2079 | if (!platform_get_drvdata(the_udc_pdev)) { |
| 2080 | /* |
| 2081 | * The udc was added successfully but its probe function failed |
| 2082 | * for some reason. |
| 2083 | */ |
| 2084 | retval = -EINVAL; |
| 2085 | goto err_probe_udc; |
| 2086 | } |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2087 | return retval; |
| 2088 | |
Sebastian Andrzej Siewior | 865835f | 2011-04-15 20:37:06 +0200 | [diff] [blame] | 2089 | err_probe_udc: |
| 2090 | platform_device_del(the_udc_pdev); |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2091 | err_add_udc: |
| 2092 | platform_device_del(the_hcd_pdev); |
| 2093 | err_add_hcd: |
| 2094 | platform_driver_unregister(&dummy_udc_driver); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2095 | err_register_udc_driver: |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2096 | platform_driver_unregister(&dummy_hcd_driver); |
| 2097 | err_register_hcd_driver: |
| 2098 | platform_device_put(the_udc_pdev); |
| 2099 | err_alloc_udc: |
| 2100 | platform_device_put(the_hcd_pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | return retval; |
| 2102 | } |
| 2103 | module_init (init); |
| 2104 | |
| 2105 | static void __exit cleanup (void) |
| 2106 | { |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2107 | platform_device_unregister(the_udc_pdev); |
| 2108 | platform_device_unregister(the_hcd_pdev); |
| 2109 | platform_driver_unregister(&dummy_udc_driver); |
| 2110 | platform_driver_unregister(&dummy_hcd_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | } |
| 2112 | module_exit (cleanup); |