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 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 73 | struct dummy_hcd_module_parameters { |
| 74 | bool is_super_speed; |
| 75 | }; |
| 76 | |
| 77 | static struct dummy_hcd_module_parameters mod_data = { |
| 78 | .is_super_speed = false |
| 79 | }; |
| 80 | module_param_named(is_super_speed, mod_data.is_super_speed, bool, S_IRUGO); |
| 81 | MODULE_PARM_DESC(is_super_speed, "true to simulate SuperSpeed connection"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | /*-------------------------------------------------------------------------*/ |
| 83 | |
| 84 | /* gadget side driver data structres */ |
| 85 | struct dummy_ep { |
| 86 | struct list_head queue; |
| 87 | unsigned long last_io; /* jiffies timestamp */ |
| 88 | struct usb_gadget *gadget; |
| 89 | const struct usb_endpoint_descriptor *desc; |
| 90 | struct usb_ep ep; |
| 91 | unsigned halted : 1; |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 92 | unsigned wedged : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | unsigned already_seen : 1; |
| 94 | unsigned setup_stage : 1; |
| 95 | }; |
| 96 | |
| 97 | struct dummy_request { |
| 98 | struct list_head queue; /* ep's requests */ |
| 99 | struct usb_request req; |
| 100 | }; |
| 101 | |
| 102 | static inline struct dummy_ep *usb_ep_to_dummy_ep (struct usb_ep *_ep) |
| 103 | { |
| 104 | return container_of (_ep, struct dummy_ep, ep); |
| 105 | } |
| 106 | |
| 107 | static inline struct dummy_request *usb_request_to_dummy_request |
| 108 | (struct usb_request *_req) |
| 109 | { |
| 110 | return container_of (_req, struct dummy_request, req); |
| 111 | } |
| 112 | |
| 113 | /*-------------------------------------------------------------------------*/ |
| 114 | |
| 115 | /* |
| 116 | * Every device has ep0 for control requests, plus up to 30 more endpoints, |
| 117 | * in one of two types: |
| 118 | * |
| 119 | * - Configurable: direction (in/out), type (bulk, iso, etc), and endpoint |
| 120 | * number can be changed. Names like "ep-a" are used for this type. |
| 121 | * |
| 122 | * - Fixed Function: in other cases. some characteristics may be mutable; |
| 123 | * that'd be hardware-specific. Names like "ep12out-bulk" are used. |
| 124 | * |
| 125 | * Gadget drivers are responsible for not setting up conflicting endpoint |
| 126 | * configurations, illegal or unsupported packet lengths, and so on. |
| 127 | */ |
| 128 | |
| 129 | static const char ep0name [] = "ep0"; |
| 130 | |
| 131 | static const char *const ep_name [] = { |
| 132 | ep0name, /* everyone has ep0 */ |
| 133 | |
| 134 | /* act like a net2280: high speed, six configurable endpoints */ |
| 135 | "ep-a", "ep-b", "ep-c", "ep-d", "ep-e", "ep-f", |
| 136 | |
| 137 | /* or like pxa250: fifteen fixed function endpoints */ |
| 138 | "ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int", |
| 139 | "ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int", |
| 140 | "ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso", |
| 141 | "ep15in-int", |
| 142 | |
| 143 | /* or like sa1100: two fixed function endpoints */ |
| 144 | "ep1out-bulk", "ep2in-bulk", |
| 145 | }; |
Tobias Klauser | 52950ed | 2005-12-11 16:20:08 +0100 | [diff] [blame] | 146 | #define DUMMY_ENDPOINTS ARRAY_SIZE(ep_name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 148 | /*-------------------------------------------------------------------------*/ |
| 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | #define FIFO_SIZE 64 |
| 151 | |
| 152 | struct urbp { |
| 153 | struct urb *urb; |
| 154 | struct list_head urbp_list; |
| 155 | }; |
| 156 | |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 157 | |
| 158 | enum dummy_rh_state { |
| 159 | DUMMY_RH_RESET, |
| 160 | DUMMY_RH_SUSPENDED, |
| 161 | DUMMY_RH_RUNNING |
| 162 | }; |
| 163 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 164 | struct dummy_hcd { |
| 165 | struct dummy *dum; |
| 166 | enum dummy_rh_state rh_state; |
| 167 | struct timer_list timer; |
| 168 | u32 port_status; |
| 169 | u32 old_status; |
| 170 | unsigned long re_timeout; |
| 171 | |
| 172 | struct usb_device *udev; |
| 173 | struct list_head urbp_list; |
| 174 | |
| 175 | unsigned active:1; |
| 176 | unsigned old_active:1; |
| 177 | unsigned resuming:1; |
| 178 | }; |
| 179 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | struct dummy { |
| 181 | spinlock_t lock; |
| 182 | |
| 183 | /* |
| 184 | * SLAVE/GADGET side support |
| 185 | */ |
| 186 | struct dummy_ep ep [DUMMY_ENDPOINTS]; |
| 187 | int address; |
| 188 | struct usb_gadget gadget; |
| 189 | struct usb_gadget_driver *driver; |
| 190 | struct dummy_request fifo_req; |
| 191 | u8 fifo_buf [FIFO_SIZE]; |
| 192 | u16 devstatus; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 193 | unsigned udc_suspended:1; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 194 | unsigned pullup:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
| 196 | /* |
| 197 | * MASTER/HOST side support |
| 198 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 199 | struct dummy_hcd *hs_hcd; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 200 | struct dummy_hcd *ss_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | }; |
| 202 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 203 | 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] | 204 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 205 | return (struct dummy_hcd *) (hcd->hcd_priv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | } |
| 207 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 208 | 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] | 209 | { |
| 210 | return container_of((void *) dum, struct usb_hcd, hcd_priv); |
| 211 | } |
| 212 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 213 | static inline struct device *dummy_dev(struct dummy_hcd *dum) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 215 | return dummy_hcd_to_hcd(dum)->self.controller; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | } |
| 217 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 218 | static inline struct device *udc_dev (struct dummy *dum) |
| 219 | { |
| 220 | return dum->gadget.dev.parent; |
| 221 | } |
| 222 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | static inline struct dummy *ep_to_dummy (struct dummy_ep *ep) |
| 224 | { |
| 225 | return container_of (ep->gadget, struct dummy, gadget); |
| 226 | } |
| 227 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 228 | 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] | 229 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 230 | struct dummy *dum = container_of(gadget, struct dummy, gadget); |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 231 | if (dum->gadget.speed == USB_SPEED_SUPER) |
| 232 | return dum->ss_hcd; |
| 233 | else |
| 234 | return dum->hs_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | static inline struct dummy *gadget_dev_to_dummy (struct device *dev) |
| 238 | { |
| 239 | return container_of (dev, struct dummy, gadget.dev); |
| 240 | } |
| 241 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 242 | static struct dummy the_controller; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
| 244 | /*-------------------------------------------------------------------------*/ |
| 245 | |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 246 | /* SLAVE/GADGET SIDE UTILITY ROUTINES */ |
| 247 | |
| 248 | /* called with spinlock held */ |
| 249 | static void nuke (struct dummy *dum, struct dummy_ep *ep) |
| 250 | { |
| 251 | while (!list_empty (&ep->queue)) { |
| 252 | struct dummy_request *req; |
| 253 | |
| 254 | req = list_entry (ep->queue.next, struct dummy_request, queue); |
| 255 | list_del_init (&req->queue); |
| 256 | req->req.status = -ESHUTDOWN; |
| 257 | |
| 258 | spin_unlock (&dum->lock); |
| 259 | req->req.complete (&ep->ep, &req->req); |
| 260 | spin_lock (&dum->lock); |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | /* caller must hold lock */ |
| 265 | static void |
| 266 | stop_activity (struct dummy *dum) |
| 267 | { |
| 268 | struct dummy_ep *ep; |
| 269 | |
| 270 | /* prevent any more requests */ |
| 271 | dum->address = 0; |
| 272 | |
| 273 | /* The timer is left running so that outstanding URBs can fail */ |
| 274 | |
| 275 | /* nuke any pending requests first, so driver i/o is quiesced */ |
| 276 | list_for_each_entry (ep, &dum->gadget.ep_list, ep.ep_list) |
| 277 | nuke (dum, ep); |
| 278 | |
| 279 | /* driver now does any non-usb quiescing necessary */ |
| 280 | } |
| 281 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 282 | /** |
| 283 | * set_link_state_by_speed() - Sets the current state of the link according to |
| 284 | * the hcd speed |
| 285 | * @dum_hcd: pointer to the dummy_hcd structure to update the link state for |
| 286 | * |
| 287 | * This function updates the port_status according to the link state and the |
| 288 | * speed of the hcd. |
| 289 | */ |
| 290 | static void set_link_state_by_speed(struct dummy_hcd *dum_hcd) |
| 291 | { |
| 292 | struct dummy *dum = dum_hcd->dum; |
| 293 | |
| 294 | if (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3) { |
| 295 | if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) == 0) { |
| 296 | dum_hcd->port_status = 0; |
| 297 | } else if (!dum->pullup || dum->udc_suspended) { |
| 298 | /* UDC suspend must cause a disconnect */ |
| 299 | dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | |
| 300 | USB_PORT_STAT_ENABLE); |
| 301 | if ((dum_hcd->old_status & |
| 302 | USB_PORT_STAT_CONNECTION) != 0) |
| 303 | dum_hcd->port_status |= |
| 304 | (USB_PORT_STAT_C_CONNECTION << 16); |
| 305 | } else { |
| 306 | /* device is connected and not suspended */ |
| 307 | dum_hcd->port_status |= (USB_PORT_STAT_CONNECTION | |
| 308 | USB_PORT_STAT_SPEED_5GBPS) ; |
| 309 | if ((dum_hcd->old_status & |
| 310 | USB_PORT_STAT_CONNECTION) == 0) |
| 311 | dum_hcd->port_status |= |
| 312 | (USB_PORT_STAT_C_CONNECTION << 16); |
| 313 | if ((dum_hcd->port_status & |
| 314 | USB_PORT_STAT_ENABLE) == 1 && |
| 315 | (dum_hcd->port_status & |
| 316 | USB_SS_PORT_LS_U0) == 1 && |
| 317 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) |
| 318 | dum_hcd->active = 1; |
| 319 | } |
| 320 | } else { |
| 321 | if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) { |
| 322 | dum_hcd->port_status = 0; |
| 323 | } else if (!dum->pullup || dum->udc_suspended) { |
| 324 | /* UDC suspend must cause a disconnect */ |
| 325 | dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | |
| 326 | USB_PORT_STAT_ENABLE | |
| 327 | USB_PORT_STAT_LOW_SPEED | |
| 328 | USB_PORT_STAT_HIGH_SPEED | |
| 329 | USB_PORT_STAT_SUSPEND); |
| 330 | if ((dum_hcd->old_status & |
| 331 | USB_PORT_STAT_CONNECTION) != 0) |
| 332 | dum_hcd->port_status |= |
| 333 | (USB_PORT_STAT_C_CONNECTION << 16); |
| 334 | } else { |
| 335 | dum_hcd->port_status |= USB_PORT_STAT_CONNECTION; |
| 336 | if ((dum_hcd->old_status & |
| 337 | USB_PORT_STAT_CONNECTION) == 0) |
| 338 | dum_hcd->port_status |= |
| 339 | (USB_PORT_STAT_C_CONNECTION << 16); |
| 340 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0) |
| 341 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; |
| 342 | else if ((dum_hcd->port_status & |
| 343 | USB_PORT_STAT_SUSPEND) == 0 && |
| 344 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) |
| 345 | dum_hcd->active = 1; |
| 346 | } |
| 347 | } |
| 348 | } |
| 349 | |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 350 | /* caller must hold lock */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 351 | static void set_link_state(struct dummy_hcd *dum_hcd) |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 352 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 353 | struct dummy *dum = dum_hcd->dum; |
| 354 | |
| 355 | dum_hcd->active = 0; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 356 | if (dum->pullup) |
| 357 | if ((dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 && |
| 358 | dum->gadget.speed != USB_SPEED_SUPER) || |
| 359 | (dummy_hcd_to_hcd(dum_hcd)->speed != HCD_USB3 && |
| 360 | dum->gadget.speed == USB_SPEED_SUPER)) |
| 361 | return; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 362 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 363 | set_link_state_by_speed(dum_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 364 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 365 | if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 || |
| 366 | dum_hcd->active) |
| 367 | dum_hcd->resuming = 0; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 368 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 369 | /* if !connected or reset */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 370 | if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 || |
| 371 | (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) { |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 372 | /* |
| 373 | * We're connected and not reset (reset occurred now), |
| 374 | * and driver attached - disconnect! |
| 375 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 376 | if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 && |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 377 | (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 && |
| 378 | dum->driver) { |
| 379 | stop_activity(dum); |
| 380 | spin_unlock(&dum->lock); |
| 381 | dum->driver->disconnect(&dum->gadget); |
| 382 | spin_lock(&dum->lock); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 383 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 384 | } else if (dum_hcd->active != dum_hcd->old_active) { |
| 385 | if (dum_hcd->old_active && dum->driver->suspend) { |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 386 | spin_unlock(&dum->lock); |
| 387 | dum->driver->suspend(&dum->gadget); |
| 388 | spin_lock(&dum->lock); |
| 389 | } else if (!dum_hcd->old_active && dum->driver->resume) { |
| 390 | spin_unlock(&dum->lock); |
| 391 | dum->driver->resume(&dum->gadget); |
| 392 | spin_lock(&dum->lock); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 393 | } |
| 394 | } |
| 395 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 396 | dum_hcd->old_status = dum_hcd->port_status; |
| 397 | dum_hcd->old_active = dum_hcd->active; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 398 | } |
| 399 | |
| 400 | /*-------------------------------------------------------------------------*/ |
| 401 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | /* SLAVE/GADGET SIDE DRIVER |
| 403 | * |
| 404 | * This only tracks gadget state. All the work is done when the host |
| 405 | * side tries some (emulated) i/o operation. Real device controller |
| 406 | * drivers would do real i/o using dma, fifos, irqs, timers, etc. |
| 407 | */ |
| 408 | |
| 409 | #define is_enabled(dum) \ |
| 410 | (dum->port_status & USB_PORT_STAT_ENABLE) |
| 411 | |
| 412 | static int |
| 413 | dummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) |
| 414 | { |
| 415 | struct dummy *dum; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 416 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | struct dummy_ep *ep; |
| 418 | unsigned max; |
| 419 | int retval; |
| 420 | |
| 421 | ep = usb_ep_to_dummy_ep (_ep); |
| 422 | if (!_ep || !desc || ep->desc || _ep->name == ep0name |
| 423 | || desc->bDescriptorType != USB_DT_ENDPOINT) |
| 424 | return -EINVAL; |
| 425 | dum = ep_to_dummy (ep); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 426 | if (!dum->driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | return -ESHUTDOWN; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 428 | if (dum->gadget.speed == USB_SPEED_SUPER) |
| 429 | dum_hcd = dum->ss_hcd; |
| 430 | else |
| 431 | dum_hcd = dum->hs_hcd; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 432 | if (!is_enabled(dum_hcd)) |
| 433 | return -ESHUTDOWN; |
| 434 | |
| 435 | /* |
| 436 | * For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the |
| 437 | * maximum packet size. |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 438 | * For SS devices the wMaxPacketSize is limited by 1024. |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 439 | */ |
| 440 | max = le16_to_cpu(desc->wMaxPacketSize) & 0x7ff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | |
| 442 | /* drivers must not request bad settings, since lower levels |
| 443 | * (hardware or its drivers) may not check. some endpoints |
| 444 | * can't do iso, many have maxpacket limitations, etc. |
| 445 | * |
| 446 | * since this "hardware" driver is here to help debugging, we |
| 447 | * have some extra sanity checks. (there could be more though, |
| 448 | * especially for "ep9out" style fixed function ones.) |
| 449 | */ |
| 450 | retval = -EINVAL; |
| 451 | switch (desc->bmAttributes & 0x03) { |
| 452 | case USB_ENDPOINT_XFER_BULK: |
| 453 | if (strstr (ep->ep.name, "-iso") |
| 454 | || strstr (ep->ep.name, "-int")) { |
| 455 | goto done; |
| 456 | } |
| 457 | switch (dum->gadget.speed) { |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 458 | case USB_SPEED_SUPER: |
| 459 | if (max == 1024) |
| 460 | break; |
| 461 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | case USB_SPEED_HIGH: |
| 463 | if (max == 512) |
| 464 | break; |
Ingo van Lil | 9063ff4 | 2008-03-28 14:50:26 -0700 | [diff] [blame] | 465 | goto done; |
| 466 | case USB_SPEED_FULL: |
| 467 | if (max == 8 || max == 16 || max == 32 || max == 64) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | /* we'll fake any legal size */ |
| 469 | break; |
Ingo van Lil | 9063ff4 | 2008-03-28 14:50:26 -0700 | [diff] [blame] | 470 | /* save a return statement */ |
| 471 | default: |
| 472 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | } |
| 474 | break; |
| 475 | case USB_ENDPOINT_XFER_INT: |
| 476 | if (strstr (ep->ep.name, "-iso")) /* bulk is ok */ |
| 477 | goto done; |
| 478 | /* real hardware might not handle all packet sizes */ |
| 479 | switch (dum->gadget.speed) { |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 480 | case USB_SPEED_SUPER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | case USB_SPEED_HIGH: |
| 482 | if (max <= 1024) |
| 483 | break; |
| 484 | /* save a return statement */ |
| 485 | case USB_SPEED_FULL: |
| 486 | if (max <= 64) |
| 487 | break; |
| 488 | /* save a return statement */ |
| 489 | default: |
| 490 | if (max <= 8) |
| 491 | break; |
| 492 | goto done; |
| 493 | } |
| 494 | break; |
| 495 | case USB_ENDPOINT_XFER_ISOC: |
| 496 | if (strstr (ep->ep.name, "-bulk") |
| 497 | || strstr (ep->ep.name, "-int")) |
| 498 | goto done; |
| 499 | /* real hardware might not handle all packet sizes */ |
| 500 | switch (dum->gadget.speed) { |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 501 | case USB_SPEED_SUPER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | case USB_SPEED_HIGH: |
| 503 | if (max <= 1024) |
| 504 | break; |
| 505 | /* save a return statement */ |
| 506 | case USB_SPEED_FULL: |
| 507 | if (max <= 1023) |
| 508 | break; |
| 509 | /* save a return statement */ |
| 510 | default: |
| 511 | goto done; |
| 512 | } |
| 513 | break; |
| 514 | default: |
| 515 | /* few chips support control except on ep0 */ |
| 516 | goto done; |
| 517 | } |
| 518 | |
| 519 | _ep->maxpacket = max; |
| 520 | ep->desc = desc; |
| 521 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 522 | 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] | 523 | _ep->name, |
| 524 | desc->bEndpointAddress & 0x0f, |
| 525 | (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", |
| 526 | ({ char *val; |
| 527 | switch (desc->bmAttributes & 0x03) { |
Tatyana Brokhman | 7c884fe | 2011-06-28 16:33:52 +0300 | [diff] [blame] | 528 | case USB_ENDPOINT_XFER_BULK: |
| 529 | val = "bulk"; |
| 530 | break; |
| 531 | case USB_ENDPOINT_XFER_ISOC: |
| 532 | val = "iso"; |
| 533 | break; |
| 534 | case USB_ENDPOINT_XFER_INT: |
| 535 | val = "intr"; |
| 536 | break; |
| 537 | default: |
| 538 | val = "ctrl"; |
| 539 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | }; val; }), |
| 541 | max); |
| 542 | |
| 543 | /* at this point real hardware should be NAKing transfers |
| 544 | * to that endpoint, until a buffer is queued to it. |
| 545 | */ |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 546 | ep->halted = ep->wedged = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | retval = 0; |
| 548 | done: |
| 549 | return retval; |
| 550 | } |
| 551 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | static int dummy_disable (struct usb_ep *_ep) |
| 553 | { |
| 554 | struct dummy_ep *ep; |
| 555 | struct dummy *dum; |
| 556 | unsigned long flags; |
| 557 | int retval; |
| 558 | |
| 559 | ep = usb_ep_to_dummy_ep (_ep); |
| 560 | if (!_ep || !ep->desc || _ep->name == ep0name) |
| 561 | return -EINVAL; |
| 562 | dum = ep_to_dummy (ep); |
| 563 | |
| 564 | spin_lock_irqsave (&dum->lock, flags); |
| 565 | ep->desc = NULL; |
| 566 | retval = 0; |
| 567 | nuke (dum, ep); |
| 568 | spin_unlock_irqrestore (&dum->lock, flags); |
| 569 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 570 | dev_dbg (udc_dev(dum), "disabled %s\n", _ep->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | return retval; |
| 572 | } |
| 573 | |
| 574 | static struct usb_request * |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 575 | dummy_alloc_request (struct usb_ep *_ep, gfp_t mem_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | { |
| 577 | struct dummy_ep *ep; |
| 578 | struct dummy_request *req; |
| 579 | |
| 580 | if (!_ep) |
| 581 | return NULL; |
| 582 | ep = usb_ep_to_dummy_ep (_ep); |
| 583 | |
Eric Sesterhenn | 7039f42 | 2006-02-27 13:34:10 -0800 | [diff] [blame] | 584 | req = kzalloc(sizeof(*req), mem_flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | if (!req) |
| 586 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | INIT_LIST_HEAD (&req->queue); |
| 588 | return &req->req; |
| 589 | } |
| 590 | |
| 591 | static void |
| 592 | dummy_free_request (struct usb_ep *_ep, struct usb_request *_req) |
| 593 | { |
| 594 | struct dummy_ep *ep; |
| 595 | struct dummy_request *req; |
| 596 | |
| 597 | ep = usb_ep_to_dummy_ep (_ep); |
| 598 | if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) |
| 599 | return; |
| 600 | |
| 601 | req = usb_request_to_dummy_request (_req); |
| 602 | WARN_ON (!list_empty (&req->queue)); |
| 603 | kfree (req); |
| 604 | } |
| 605 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | static void |
| 607 | fifo_complete (struct usb_ep *ep, struct usb_request *req) |
| 608 | { |
| 609 | } |
| 610 | |
| 611 | static int |
Olav Kongas | 5db539e | 2005-06-23 20:25:36 +0300 | [diff] [blame] | 612 | dummy_queue (struct usb_ep *_ep, struct usb_request *_req, |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 613 | gfp_t mem_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | { |
| 615 | struct dummy_ep *ep; |
| 616 | struct dummy_request *req; |
| 617 | struct dummy *dum; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 618 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | unsigned long flags; |
| 620 | |
| 621 | req = usb_request_to_dummy_request (_req); |
| 622 | if (!_req || !list_empty (&req->queue) || !_req->complete) |
| 623 | return -EINVAL; |
| 624 | |
| 625 | ep = usb_ep_to_dummy_ep (_ep); |
| 626 | if (!_ep || (!ep->desc && _ep->name != ep0name)) |
| 627 | return -EINVAL; |
| 628 | |
| 629 | dum = ep_to_dummy (ep); |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 630 | if (dum->gadget.speed == USB_SPEED_SUPER) |
| 631 | dum_hcd = dum->ss_hcd; |
| 632 | else |
| 633 | dum_hcd = dum->hs_hcd; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 634 | if (!dum->driver || !is_enabled(dum_hcd)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | return -ESHUTDOWN; |
| 636 | |
| 637 | #if 0 |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 638 | 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] | 639 | ep, _req, _ep->name, _req->length, _req->buf); |
| 640 | #endif |
| 641 | |
| 642 | _req->status = -EINPROGRESS; |
| 643 | _req->actual = 0; |
| 644 | spin_lock_irqsave (&dum->lock, flags); |
| 645 | |
| 646 | /* implement an emulated single-request FIFO */ |
| 647 | if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && |
| 648 | list_empty (&dum->fifo_req.queue) && |
| 649 | list_empty (&ep->queue) && |
| 650 | _req->length <= FIFO_SIZE) { |
| 651 | req = &dum->fifo_req; |
| 652 | req->req = *_req; |
| 653 | req->req.buf = dum->fifo_buf; |
| 654 | memcpy (dum->fifo_buf, _req->buf, _req->length); |
| 655 | req->req.context = dum; |
| 656 | req->req.complete = fifo_complete; |
| 657 | |
David Brownell | c728df7 | 2008-07-26 08:06:24 -0700 | [diff] [blame] | 658 | list_add_tail(&req->queue, &ep->queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | spin_unlock (&dum->lock); |
| 660 | _req->actual = _req->length; |
| 661 | _req->status = 0; |
| 662 | _req->complete (_ep, _req); |
| 663 | spin_lock (&dum->lock); |
David Brownell | c728df7 | 2008-07-26 08:06:24 -0700 | [diff] [blame] | 664 | } else |
| 665 | list_add_tail(&req->queue, &ep->queue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | spin_unlock_irqrestore (&dum->lock, flags); |
| 667 | |
| 668 | /* real hardware would likely enable transfers here, in case |
| 669 | * it'd been left NAKing. |
| 670 | */ |
| 671 | return 0; |
| 672 | } |
| 673 | |
| 674 | static int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) |
| 675 | { |
| 676 | struct dummy_ep *ep; |
| 677 | struct dummy *dum; |
| 678 | int retval = -EINVAL; |
| 679 | unsigned long flags; |
| 680 | struct dummy_request *req = NULL; |
| 681 | |
| 682 | if (!_ep || !_req) |
| 683 | return retval; |
| 684 | ep = usb_ep_to_dummy_ep (_ep); |
| 685 | dum = ep_to_dummy (ep); |
| 686 | |
| 687 | if (!dum->driver) |
| 688 | return -ESHUTDOWN; |
| 689 | |
Alan Stern | b4dbda1 | 2006-07-28 17:07:34 -0400 | [diff] [blame] | 690 | local_irq_save (flags); |
| 691 | spin_lock (&dum->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | list_for_each_entry (req, &ep->queue, queue) { |
| 693 | if (&req->req == _req) { |
| 694 | list_del_init (&req->queue); |
| 695 | _req->status = -ECONNRESET; |
| 696 | retval = 0; |
| 697 | break; |
| 698 | } |
| 699 | } |
Alan Stern | b4dbda1 | 2006-07-28 17:07:34 -0400 | [diff] [blame] | 700 | spin_unlock (&dum->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
| 702 | if (retval == 0) { |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 703 | dev_dbg (udc_dev(dum), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | "dequeued req %p from %s, len %d buf %p\n", |
| 705 | req, _ep->name, _req->length, _req->buf); |
| 706 | _req->complete (_ep, _req); |
| 707 | } |
Alan Stern | b4dbda1 | 2006-07-28 17:07:34 -0400 | [diff] [blame] | 708 | local_irq_restore (flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | return retval; |
| 710 | } |
| 711 | |
| 712 | static int |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 713 | 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] | 714 | { |
| 715 | struct dummy_ep *ep; |
| 716 | struct dummy *dum; |
| 717 | |
| 718 | if (!_ep) |
| 719 | return -EINVAL; |
| 720 | ep = usb_ep_to_dummy_ep (_ep); |
| 721 | dum = ep_to_dummy (ep); |
| 722 | if (!dum->driver) |
| 723 | return -ESHUTDOWN; |
| 724 | if (!value) |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 725 | ep->halted = ep->wedged = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && |
| 727 | !list_empty (&ep->queue)) |
| 728 | return -EAGAIN; |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 729 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | ep->halted = 1; |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 731 | if (wedged) |
| 732 | ep->wedged = 1; |
| 733 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | /* FIXME clear emulated data toggle too */ |
| 735 | return 0; |
| 736 | } |
| 737 | |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 738 | static int |
| 739 | dummy_set_halt(struct usb_ep *_ep, int value) |
| 740 | { |
| 741 | return dummy_set_halt_and_wedge(_ep, value, 0); |
| 742 | } |
| 743 | |
| 744 | static int dummy_set_wedge(struct usb_ep *_ep) |
| 745 | { |
| 746 | if (!_ep || _ep->name == ep0name) |
| 747 | return -EINVAL; |
| 748 | return dummy_set_halt_and_wedge(_ep, 1, 1); |
| 749 | } |
| 750 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | static const struct usb_ep_ops dummy_ep_ops = { |
| 752 | .enable = dummy_enable, |
| 753 | .disable = dummy_disable, |
| 754 | |
| 755 | .alloc_request = dummy_alloc_request, |
| 756 | .free_request = dummy_free_request, |
| 757 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | .queue = dummy_queue, |
| 759 | .dequeue = dummy_dequeue, |
| 760 | |
| 761 | .set_halt = dummy_set_halt, |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 762 | .set_wedge = dummy_set_wedge, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | }; |
| 764 | |
| 765 | /*-------------------------------------------------------------------------*/ |
| 766 | |
| 767 | /* there are both host and device side versions of this call ... */ |
| 768 | static int dummy_g_get_frame (struct usb_gadget *_gadget) |
| 769 | { |
| 770 | struct timeval tv; |
| 771 | |
| 772 | do_gettimeofday (&tv); |
| 773 | return tv.tv_usec / 1000; |
| 774 | } |
| 775 | |
| 776 | static int dummy_wakeup (struct usb_gadget *_gadget) |
| 777 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 778 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 780 | dum_hcd = gadget_to_dummy_hcd(_gadget); |
| 781 | if (!(dum_hcd->dum->devstatus & ((1 << USB_DEVICE_B_HNP_ENABLE) |
Alan Stern | 5742b0c | 2005-05-02 11:25:17 -0400 | [diff] [blame] | 782 | | (1 << USB_DEVICE_REMOTE_WAKEUP)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | return -EINVAL; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 784 | if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 785 | return -ENOLINK; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 786 | if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 && |
| 787 | dum_hcd->rh_state != DUMMY_RH_SUSPENDED) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 788 | return -EIO; |
| 789 | |
| 790 | /* 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] | 791 | |
| 792 | /* hub notices our request, issues downstream resume, etc */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 793 | dum_hcd->resuming = 1; |
| 794 | dum_hcd->re_timeout = jiffies + msecs_to_jiffies(20); |
| 795 | 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] | 796 | return 0; |
| 797 | } |
| 798 | |
| 799 | static int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) |
| 800 | { |
| 801 | struct dummy *dum; |
| 802 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 803 | dum = (gadget_to_dummy_hcd(_gadget))->dum; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | if (value) |
| 805 | dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); |
| 806 | else |
| 807 | dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); |
| 808 | return 0; |
| 809 | } |
| 810 | |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 811 | static int dummy_pullup (struct usb_gadget *_gadget, int value) |
| 812 | { |
| 813 | struct dummy *dum; |
| 814 | unsigned long flags; |
| 815 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 816 | dum = gadget_to_dummy_hcd(_gadget)->dum; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 817 | spin_lock_irqsave (&dum->lock, flags); |
| 818 | dum->pullup = (value != 0); |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 819 | set_link_state((dum->gadget.speed == USB_SPEED_SUPER ? |
| 820 | dum->ss_hcd : dum->hs_hcd)); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 821 | spin_unlock_irqrestore (&dum->lock, flags); |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 822 | usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ? |
| 823 | dummy_hcd_to_hcd(dum->ss_hcd) : |
| 824 | dummy_hcd_to_hcd(dum->hs_hcd))); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 825 | return 0; |
| 826 | } |
| 827 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 828 | static int dummy_udc_start(struct usb_gadget_driver *driver, |
| 829 | int (*bind)(struct usb_gadget *)); |
| 830 | static int dummy_udc_stop(struct usb_gadget_driver *driver); |
| 831 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | static const struct usb_gadget_ops dummy_ops = { |
| 833 | .get_frame = dummy_g_get_frame, |
| 834 | .wakeup = dummy_wakeup, |
| 835 | .set_selfpowered = dummy_set_selfpowered, |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 836 | .pullup = dummy_pullup, |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 837 | .start = dummy_udc_start, |
| 838 | .stop = dummy_udc_stop, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | }; |
| 840 | |
| 841 | /*-------------------------------------------------------------------------*/ |
| 842 | |
| 843 | /* "function" sysfs attribute */ |
| 844 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 845 | show_function (struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | { |
| 847 | struct dummy *dum = gadget_dev_to_dummy (dev); |
| 848 | |
| 849 | if (!dum->driver || !dum->driver->function) |
| 850 | return 0; |
| 851 | return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); |
| 852 | } |
Alan Stern | cc095b0 | 2005-05-10 15:28:38 -0400 | [diff] [blame] | 853 | static DEVICE_ATTR (function, S_IRUGO, show_function, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | |
| 855 | /*-------------------------------------------------------------------------*/ |
| 856 | |
| 857 | /* |
| 858 | * Driver registration/unregistration. |
| 859 | * |
| 860 | * This is basically hardware-specific; there's usually only one real USB |
| 861 | * device (not host) controller since that's how USB devices are intended |
| 862 | * to work. So most implementations of these api calls will rely on the |
| 863 | * fact that only one driver will ever bind to the hardware. But curious |
| 864 | * hardware can be built with discrete components, so the gadget API doesn't |
| 865 | * require that assumption. |
| 866 | * |
| 867 | * For this emulator, it might be convenient to create a usb slave device |
| 868 | * for each driver that registers: just add to a big root hub. |
| 869 | */ |
| 870 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 871 | static int dummy_udc_start(struct usb_gadget_driver *driver, |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 872 | int (*bind)(struct usb_gadget *)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 874 | struct dummy *dum = &the_controller; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | int retval, i; |
| 876 | |
| 877 | if (!dum) |
| 878 | return -EINVAL; |
| 879 | if (dum->driver) |
| 880 | return -EBUSY; |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 881 | if (!bind || !driver->setup || driver->speed == USB_SPEED_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | return -EINVAL; |
| 883 | |
| 884 | /* |
| 885 | * SLAVE side init ... the layer above hardware, which |
| 886 | * can't enumerate without help from the driver we're binding. |
| 887 | */ |
Alan Stern | 5742b0c | 2005-05-02 11:25:17 -0400 | [diff] [blame] | 888 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | dum->devstatus = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | |
| 891 | INIT_LIST_HEAD (&dum->gadget.ep_list); |
| 892 | for (i = 0; i < DUMMY_ENDPOINTS; i++) { |
| 893 | struct dummy_ep *ep = &dum->ep [i]; |
| 894 | |
| 895 | if (!ep_name [i]) |
| 896 | break; |
| 897 | ep->ep.name = ep_name [i]; |
| 898 | ep->ep.ops = &dummy_ep_ops; |
| 899 | list_add_tail (&ep->ep.ep_list, &dum->gadget.ep_list); |
Alan Stern | 851a526 | 2008-08-14 15:48:30 -0400 | [diff] [blame] | 900 | ep->halted = ep->wedged = ep->already_seen = |
| 901 | ep->setup_stage = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | ep->ep.maxpacket = ~0; |
| 903 | ep->last_io = jiffies; |
| 904 | ep->gadget = &dum->gadget; |
| 905 | ep->desc = NULL; |
| 906 | INIT_LIST_HEAD (&ep->queue); |
| 907 | } |
| 908 | |
| 909 | dum->gadget.ep0 = &dum->ep [0].ep; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 910 | if (mod_data.is_super_speed) |
| 911 | dum->gadget.speed = driver->speed; |
| 912 | else |
| 913 | dum->gadget.speed = min((u8)USB_SPEED_HIGH, (u8)driver->speed); |
| 914 | if (dum->gadget.speed < driver->speed) |
| 915 | dev_dbg(udc_dev(dum), "This device can perform faster if" |
| 916 | " you connect it to a " |
| 917 | "SupeSpeed port...\n"); |
| 918 | |
| 919 | if (dum->gadget.speed == USB_SPEED_SUPER) { |
| 920 | for (i = 0; i < DUMMY_ENDPOINTS; i++) |
| 921 | dum->ep[i].ep.max_streams = 0x10; |
| 922 | dum->ep[0].ep.maxpacket = 9; |
| 923 | } else |
| 924 | dum->ep[0].ep.maxpacket = 64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | list_del_init (&dum->ep [0].ep.ep_list); |
| 926 | INIT_LIST_HEAD(&dum->fifo_req.queue); |
| 927 | |
Alan Stern | 5933101 | 2007-11-20 16:28:55 -0500 | [diff] [blame] | 928 | driver->driver.bus = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | dum->driver = driver; |
| 930 | dum->gadget.dev.driver = &driver->driver; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 931 | dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | driver->driver.name); |
Uwe Kleine-König | b0fca50 | 2010-08-12 17:43:53 +0200 | [diff] [blame] | 933 | retval = bind(&dum->gadget); |
Alan Stern | 5933101 | 2007-11-20 16:28:55 -0500 | [diff] [blame] | 934 | if (retval) { |
| 935 | dum->driver = NULL; |
| 936 | dum->gadget.dev.driver = NULL; |
| 937 | return retval; |
| 938 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | |
| 940 | /* khubd will enumerate this in a while */ |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 941 | spin_lock_irq (&dum->lock); |
| 942 | dum->pullup = 1; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 943 | if (dum->gadget.speed == USB_SPEED_SUPER) { |
| 944 | dum->gadget.is_otg = |
| 945 | (dummy_hcd_to_hcd(dum->ss_hcd)->self.otg_port != 0); |
| 946 | set_link_state(dum->ss_hcd); |
| 947 | } else { |
| 948 | dum->gadget.is_otg = |
| 949 | (dummy_hcd_to_hcd(dum->hs_hcd)->self.otg_port != 0); |
| 950 | set_link_state(dum->hs_hcd); |
| 951 | } |
| 952 | |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 953 | spin_unlock_irq (&dum->lock); |
Alan Stern | 685eb93 | 2005-05-03 16:27:26 -0400 | [diff] [blame] | 954 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 955 | usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ? |
| 956 | dummy_hcd_to_hcd(dum->ss_hcd) : |
| 957 | dummy_hcd_to_hcd(dum->hs_hcd))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | return 0; |
| 959 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 961 | static int dummy_udc_stop(struct usb_gadget_driver *driver) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 963 | struct dummy *dum = &the_controller; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | unsigned long flags; |
| 965 | |
| 966 | if (!dum) |
| 967 | return -ENODEV; |
David Brownell | 6bea476 | 2006-12-05 03:15:33 -0800 | [diff] [blame] | 968 | if (!driver || driver != dum->driver || !driver->unbind) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | return -EINVAL; |
| 970 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 971 | dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | driver->driver.name); |
| 973 | |
| 974 | spin_lock_irqsave (&dum->lock, flags); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 975 | dum->pullup = 0; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 976 | set_link_state((dum->gadget.speed == USB_SPEED_SUPER ? |
| 977 | dum->ss_hcd : dum->hs_hcd)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | spin_unlock_irqrestore (&dum->lock, flags); |
| 979 | |
| 980 | driver->unbind (&dum->gadget); |
Alan Stern | 5933101 | 2007-11-20 16:28:55 -0500 | [diff] [blame] | 981 | dum->gadget.dev.driver = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | dum->driver = NULL; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 983 | spin_lock_irqsave (&dum->lock, flags); |
| 984 | dum->pullup = 0; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 985 | set_link_state((dum->gadget.speed == USB_SPEED_SUPER ? |
| 986 | dum->ss_hcd : dum->hs_hcd)); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 987 | spin_unlock_irqrestore (&dum->lock, flags); |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 988 | usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ? |
| 989 | dummy_hcd_to_hcd(dum->ss_hcd) : |
| 990 | dummy_hcd_to_hcd(dum->hs_hcd))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | return 0; |
| 992 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | |
| 994 | #undef is_enabled |
| 995 | |
Alan Stern | cc095b0 | 2005-05-10 15:28:38 -0400 | [diff] [blame] | 996 | /* just declare this in any driver that really need it */ |
| 997 | extern int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode); |
| 998 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode) |
| 1000 | { |
| 1001 | return -ENOSYS; |
| 1002 | } |
| 1003 | EXPORT_SYMBOL (net2280_set_fifo_mode); |
| 1004 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1005 | |
| 1006 | /* The gadget structure is stored inside the hcd structure and will be |
| 1007 | * released along with it. */ |
| 1008 | static void |
| 1009 | dummy_gadget_release (struct device *dev) |
| 1010 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1011 | return; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1012 | } |
| 1013 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1014 | static int dummy_udc_probe (struct platform_device *pdev) |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1015 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1016 | struct dummy *dum = &the_controller; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1017 | int rc; |
| 1018 | |
| 1019 | dum->gadget.name = gadget_name; |
| 1020 | dum->gadget.ops = &dummy_ops; |
| 1021 | dum->gadget.is_dualspeed = 1; |
| 1022 | |
Kay Sievers | 0031a06 | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 1023 | dev_set_name(&dum->gadget.dev, "gadget"); |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1024 | dum->gadget.dev.parent = &pdev->dev; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1025 | dum->gadget.dev.release = dummy_gadget_release; |
| 1026 | rc = device_register (&dum->gadget.dev); |
Rahul Ruikar | 75d87cd | 2010-10-07 09:40:45 +0530 | [diff] [blame] | 1027 | if (rc < 0) { |
| 1028 | put_device(&dum->gadget.dev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1029 | return rc; |
Rahul Ruikar | 75d87cd | 2010-10-07 09:40:45 +0530 | [diff] [blame] | 1030 | } |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1031 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 1032 | rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget); |
| 1033 | if (rc < 0) |
| 1034 | goto err_udc; |
| 1035 | |
Alan Stern | efd54a3 | 2006-09-25 11:55:56 -0400 | [diff] [blame] | 1036 | rc = device_create_file (&dum->gadget.dev, &dev_attr_function); |
| 1037 | if (rc < 0) |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 1038 | goto err_dev; |
| 1039 | platform_set_drvdata(pdev, dum); |
| 1040 | return rc; |
| 1041 | |
| 1042 | err_dev: |
| 1043 | usb_del_gadget_udc(&dum->gadget); |
| 1044 | err_udc: |
| 1045 | device_unregister(&dum->gadget.dev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1046 | return rc; |
| 1047 | } |
| 1048 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1049 | static int dummy_udc_remove (struct platform_device *pdev) |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1050 | { |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1051 | struct dummy *dum = platform_get_drvdata (pdev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1052 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 1053 | usb_del_gadget_udc(&dum->gadget); |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1054 | platform_set_drvdata (pdev, NULL); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1055 | device_remove_file (&dum->gadget.dev, &dev_attr_function); |
| 1056 | device_unregister (&dum->gadget.dev); |
| 1057 | return 0; |
| 1058 | } |
| 1059 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1060 | 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] | 1061 | { |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1062 | struct dummy *dum = platform_get_drvdata(pdev); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1063 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1064 | dev_dbg (&pdev->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1065 | spin_lock_irq (&dum->lock); |
| 1066 | dum->udc_suspended = 1; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1067 | set_link_state((dum->gadget.speed == USB_SPEED_SUPER ? |
| 1068 | dum->ss_hcd : dum->hs_hcd)); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1069 | spin_unlock_irq (&dum->lock); |
| 1070 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1071 | usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ? |
| 1072 | dummy_hcd_to_hcd(dum->ss_hcd) : |
| 1073 | dummy_hcd_to_hcd(dum->hs_hcd))); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1074 | return 0; |
| 1075 | } |
| 1076 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1077 | static int dummy_udc_resume (struct platform_device *pdev) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1078 | { |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 1079 | struct dummy *dum = platform_get_drvdata(pdev); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1080 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1081 | dev_dbg (&pdev->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1082 | spin_lock_irq (&dum->lock); |
| 1083 | dum->udc_suspended = 0; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1084 | set_link_state((dum->gadget.speed == USB_SPEED_SUPER ? |
| 1085 | dum->ss_hcd : dum->hs_hcd)); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1086 | spin_unlock_irq (&dum->lock); |
| 1087 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1088 | usb_hcd_poll_rh_status((dum->gadget.speed == USB_SPEED_SUPER ? |
| 1089 | dummy_hcd_to_hcd(dum->ss_hcd) : |
| 1090 | dummy_hcd_to_hcd(dum->hs_hcd))); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1091 | return 0; |
| 1092 | } |
| 1093 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1094 | static struct platform_driver dummy_udc_driver = { |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1095 | .probe = dummy_udc_probe, |
| 1096 | .remove = dummy_udc_remove, |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1097 | .suspend = dummy_udc_suspend, |
| 1098 | .resume = dummy_udc_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1099 | .driver = { |
| 1100 | .name = (char *) gadget_name, |
| 1101 | .owner = THIS_MODULE, |
| 1102 | }, |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1103 | }; |
| 1104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | /*-------------------------------------------------------------------------*/ |
| 1106 | |
| 1107 | /* MASTER/HOST SIDE DRIVER |
| 1108 | * |
| 1109 | * this uses the hcd framework to hook up to host side drivers. |
| 1110 | * its root hub will only have one device, otherwise it acts like |
| 1111 | * a normal host controller. |
| 1112 | * |
| 1113 | * when urbs are queued, they're just stuck on a list that we |
| 1114 | * scan in a timer callback. that callback connects writes from |
| 1115 | * the host with reads from the device, and so on, based on the |
| 1116 | * usb 2.0 rules. |
| 1117 | */ |
| 1118 | |
| 1119 | static int dummy_urb_enqueue ( |
| 1120 | struct usb_hcd *hcd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | struct urb *urb, |
Al Viro | 55016f1 | 2005-10-21 03:21:58 -0400 | [diff] [blame] | 1122 | gfp_t mem_flags |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | ) { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1124 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | struct urbp *urbp; |
| 1126 | unsigned long flags; |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1127 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | |
| 1129 | if (!urb->transfer_buffer && urb->transfer_buffer_length) |
| 1130 | return -EINVAL; |
| 1131 | |
| 1132 | urbp = kmalloc (sizeof *urbp, mem_flags); |
| 1133 | if (!urbp) |
| 1134 | return -ENOMEM; |
| 1135 | urbp->urb = urb; |
| 1136 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1137 | dum_hcd = hcd_to_dummy_hcd(hcd); |
| 1138 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1139 | rc = usb_hcd_link_urb_to_ep(hcd, urb); |
| 1140 | if (rc) { |
| 1141 | kfree(urbp); |
| 1142 | goto done; |
| 1143 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1145 | if (!dum_hcd->udev) { |
| 1146 | dum_hcd->udev = urb->dev; |
| 1147 | usb_get_dev(dum_hcd->udev); |
| 1148 | } else if (unlikely(dum_hcd->udev != urb->dev)) |
| 1149 | dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1151 | list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | urb->hcpriv = urbp; |
| 1153 | if (usb_pipetype (urb->pipe) == PIPE_CONTROL) |
| 1154 | urb->error_count = 1; /* mark as a new urb */ |
| 1155 | |
| 1156 | /* kick the scheduler, it'll do the rest */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1157 | if (!timer_pending(&dum_hcd->timer)) |
| 1158 | mod_timer(&dum_hcd->timer, jiffies + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1160 | done: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1161 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1162 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | } |
| 1164 | |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1165 | 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] | 1166 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1167 | struct dummy_hcd *dum_hcd; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1168 | unsigned long flags; |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1169 | int rc; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1170 | |
| 1171 | /* giveback happens automatically in timer callback, |
| 1172 | * so make sure the callback happens */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1173 | dum_hcd = hcd_to_dummy_hcd(hcd); |
| 1174 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1175 | |
| 1176 | rc = usb_hcd_check_unlink_urb(hcd, urb, status); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1177 | if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && |
| 1178 | !list_empty(&dum_hcd->urbp_list)) |
| 1179 | mod_timer(&dum_hcd->timer, jiffies); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1180 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1181 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Alan Stern | e9df41c | 2007-08-08 11:48:02 -0400 | [diff] [blame] | 1182 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | } |
| 1184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | /* transfer up to a frame's worth; caller must own lock */ |
| 1186 | static int |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1187 | transfer(struct dummy *dum, struct urb *urb, struct dummy_ep *ep, int limit, |
| 1188 | int *status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | { |
| 1190 | struct dummy_request *req; |
| 1191 | |
| 1192 | top: |
| 1193 | /* if there's no request queued, the device is NAKing; return */ |
| 1194 | list_for_each_entry (req, &ep->queue, queue) { |
| 1195 | unsigned host_len, dev_len, len; |
| 1196 | int is_short, to_host; |
| 1197 | int rescan = 0; |
| 1198 | |
| 1199 | /* 1..N packets of ep->ep.maxpacket each ... the last one |
| 1200 | * may be short (including zero length). |
| 1201 | * |
| 1202 | * writer can send a zlp explicitly (length 0) or implicitly |
| 1203 | * (length mod maxpacket zero, and 'zero' flag); they always |
| 1204 | * terminate reads. |
| 1205 | */ |
| 1206 | host_len = urb->transfer_buffer_length - urb->actual_length; |
| 1207 | dev_len = req->req.length - req->req.actual; |
| 1208 | len = min (host_len, dev_len); |
| 1209 | |
| 1210 | /* FIXME update emulated data toggle too */ |
| 1211 | |
| 1212 | to_host = usb_pipein (urb->pipe); |
| 1213 | if (unlikely (len == 0)) |
| 1214 | is_short = 1; |
| 1215 | else { |
| 1216 | char *ubuf, *rbuf; |
| 1217 | |
| 1218 | /* not enough bandwidth left? */ |
| 1219 | if (limit < ep->ep.maxpacket && limit < len) |
| 1220 | break; |
| 1221 | len = min (len, (unsigned) limit); |
| 1222 | if (len == 0) |
| 1223 | break; |
| 1224 | |
| 1225 | /* use an extra pass for the final short packet */ |
| 1226 | if (len > ep->ep.maxpacket) { |
| 1227 | rescan = 1; |
| 1228 | len -= (len % ep->ep.maxpacket); |
| 1229 | } |
| 1230 | is_short = (len % ep->ep.maxpacket) != 0; |
| 1231 | |
| 1232 | /* else transfer packet(s) */ |
| 1233 | ubuf = urb->transfer_buffer + urb->actual_length; |
| 1234 | rbuf = req->req.buf + req->req.actual; |
| 1235 | if (to_host) |
| 1236 | memcpy (ubuf, rbuf, len); |
| 1237 | else |
| 1238 | memcpy (rbuf, ubuf, len); |
| 1239 | ep->last_io = jiffies; |
| 1240 | |
| 1241 | limit -= len; |
| 1242 | urb->actual_length += len; |
| 1243 | req->req.actual += len; |
| 1244 | } |
| 1245 | |
| 1246 | /* short packets terminate, maybe with overflow/underflow. |
| 1247 | * it's only really an error to write too much. |
| 1248 | * |
| 1249 | * partially filling a buffer optionally blocks queue advances |
| 1250 | * (so completion handlers can clean up the queue) but we don't |
Alan Stern | b0d9efb | 2007-08-21 15:39:21 -0400 | [diff] [blame] | 1251 | * need to emulate such data-in-flight. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | */ |
| 1253 | if (is_short) { |
| 1254 | if (host_len == dev_len) { |
| 1255 | req->req.status = 0; |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1256 | *status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | } else if (to_host) { |
| 1258 | req->req.status = 0; |
| 1259 | if (dev_len > host_len) |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1260 | *status = -EOVERFLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | else |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1262 | *status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | } else if (!to_host) { |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1264 | *status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | if (host_len > dev_len) |
| 1266 | req->req.status = -EOVERFLOW; |
| 1267 | else |
| 1268 | req->req.status = 0; |
| 1269 | } |
| 1270 | |
| 1271 | /* many requests terminate without a short packet */ |
| 1272 | } else { |
| 1273 | if (req->req.length == req->req.actual |
| 1274 | && !req->req.zero) |
| 1275 | req->req.status = 0; |
| 1276 | if (urb->transfer_buffer_length == urb->actual_length |
| 1277 | && !(urb->transfer_flags |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1278 | & URB_ZERO_PACKET)) |
| 1279 | *status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | } |
| 1281 | |
| 1282 | /* device side completion --> continuable */ |
| 1283 | if (req->req.status != -EINPROGRESS) { |
| 1284 | list_del_init (&req->queue); |
| 1285 | |
| 1286 | spin_unlock (&dum->lock); |
| 1287 | req->req.complete (&ep->ep, &req->req); |
| 1288 | spin_lock (&dum->lock); |
| 1289 | |
| 1290 | /* requests might have been unlinked... */ |
| 1291 | rescan = 1; |
| 1292 | } |
| 1293 | |
| 1294 | /* host side completion --> terminate */ |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1295 | if (*status != -EINPROGRESS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | break; |
| 1297 | |
| 1298 | /* rescan to continue with any other queued i/o */ |
| 1299 | if (rescan) |
| 1300 | goto top; |
| 1301 | } |
| 1302 | return limit; |
| 1303 | } |
| 1304 | |
| 1305 | static int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) |
| 1306 | { |
| 1307 | int limit = ep->ep.maxpacket; |
| 1308 | |
| 1309 | if (dum->gadget.speed == USB_SPEED_HIGH) { |
| 1310 | int tmp; |
| 1311 | |
| 1312 | /* high bandwidth mode */ |
| 1313 | tmp = le16_to_cpu(ep->desc->wMaxPacketSize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | tmp = (tmp >> 11) & 0x03; |
| 1315 | tmp *= 8 /* applies to entire frame */; |
| 1316 | limit += limit * tmp; |
| 1317 | } |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1318 | if (dum->gadget.speed == USB_SPEED_SUPER) { |
| 1319 | switch (ep->desc->bmAttributes & 0x03) { |
| 1320 | case USB_ENDPOINT_XFER_ISOC: |
| 1321 | /* Sec. 4.4.8.2 USB3.0 Spec */ |
| 1322 | limit = 3 * 16 * 1024 * 8; |
| 1323 | break; |
| 1324 | case USB_ENDPOINT_XFER_INT: |
| 1325 | /* Sec. 4.4.7.2 USB3.0 Spec */ |
| 1326 | limit = 3 * 1024 * 8; |
| 1327 | break; |
| 1328 | case USB_ENDPOINT_XFER_BULK: |
| 1329 | default: |
| 1330 | break; |
| 1331 | } |
| 1332 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | return limit; |
| 1334 | } |
| 1335 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1336 | #define is_active(dum_hcd) ((dum_hcd->port_status & \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ |
| 1338 | USB_PORT_STAT_SUSPEND)) \ |
| 1339 | == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) |
| 1340 | |
| 1341 | static struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) |
| 1342 | { |
| 1343 | int i; |
| 1344 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1345 | if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ? |
| 1346 | dum->ss_hcd : dum->hs_hcd))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | return NULL; |
| 1348 | if ((address & ~USB_DIR_IN) == 0) |
| 1349 | return &dum->ep [0]; |
| 1350 | for (i = 1; i < DUMMY_ENDPOINTS; i++) { |
| 1351 | struct dummy_ep *ep = &dum->ep [i]; |
| 1352 | |
| 1353 | if (!ep->desc) |
| 1354 | continue; |
| 1355 | if (ep->desc->bEndpointAddress == address) |
| 1356 | return ep; |
| 1357 | } |
| 1358 | return NULL; |
| 1359 | } |
| 1360 | |
| 1361 | #undef is_active |
| 1362 | |
| 1363 | #define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) |
| 1364 | #define Dev_InRequest (Dev_Request | USB_DIR_IN) |
| 1365 | #define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) |
| 1366 | #define Intf_InRequest (Intf_Request | USB_DIR_IN) |
| 1367 | #define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) |
| 1368 | #define Ep_InRequest (Ep_Request | USB_DIR_IN) |
| 1369 | |
Tatyana Brokhman | 8be8a9d | 2010-11-01 17:38:05 +0200 | [diff] [blame] | 1370 | |
| 1371 | /** |
| 1372 | * handle_control_request() - handles all control transfers |
| 1373 | * @dum: pointer to dummy (the_controller) |
| 1374 | * @urb: the urb request to handle |
| 1375 | * @setup: pointer to the setup data for a USB device control |
| 1376 | * request |
| 1377 | * @status: pointer to request handling status |
| 1378 | * |
| 1379 | * Return 0 - if the request was handled |
| 1380 | * 1 - if the request wasn't handles |
| 1381 | * error code on error |
| 1382 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1383 | 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] | 1384 | struct usb_ctrlrequest *setup, |
| 1385 | int *status) |
| 1386 | { |
| 1387 | struct dummy_ep *ep2; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1388 | struct dummy *dum = dum_hcd->dum; |
Tatyana Brokhman | 8be8a9d | 2010-11-01 17:38:05 +0200 | [diff] [blame] | 1389 | int ret_val = 1; |
| 1390 | unsigned w_index; |
| 1391 | unsigned w_value; |
| 1392 | |
| 1393 | w_index = le16_to_cpu(setup->wIndex); |
| 1394 | w_value = le16_to_cpu(setup->wValue); |
| 1395 | switch (setup->bRequest) { |
| 1396 | case USB_REQ_SET_ADDRESS: |
| 1397 | if (setup->bRequestType != Dev_Request) |
| 1398 | break; |
| 1399 | dum->address = w_value; |
| 1400 | *status = 0; |
| 1401 | dev_dbg(udc_dev(dum), "set_address = %d\n", |
| 1402 | w_value); |
| 1403 | ret_val = 0; |
| 1404 | break; |
| 1405 | case USB_REQ_SET_FEATURE: |
| 1406 | if (setup->bRequestType == Dev_Request) { |
| 1407 | ret_val = 0; |
| 1408 | switch (w_value) { |
| 1409 | case USB_DEVICE_REMOTE_WAKEUP: |
| 1410 | break; |
| 1411 | case USB_DEVICE_B_HNP_ENABLE: |
| 1412 | dum->gadget.b_hnp_enable = 1; |
| 1413 | break; |
| 1414 | case USB_DEVICE_A_HNP_SUPPORT: |
| 1415 | dum->gadget.a_hnp_support = 1; |
| 1416 | break; |
| 1417 | case USB_DEVICE_A_ALT_HNP_SUPPORT: |
| 1418 | dum->gadget.a_alt_hnp_support = 1; |
| 1419 | break; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1420 | case USB_DEVICE_U1_ENABLE: |
| 1421 | if (dummy_hcd_to_hcd(dum_hcd)->speed == |
| 1422 | HCD_USB3) |
| 1423 | w_value = USB_DEV_STAT_U1_ENABLED; |
| 1424 | else |
| 1425 | ret_val = -EOPNOTSUPP; |
| 1426 | break; |
| 1427 | case USB_DEVICE_U2_ENABLE: |
| 1428 | if (dummy_hcd_to_hcd(dum_hcd)->speed == |
| 1429 | HCD_USB3) |
| 1430 | w_value = USB_DEV_STAT_U2_ENABLED; |
| 1431 | else |
| 1432 | ret_val = -EOPNOTSUPP; |
| 1433 | break; |
| 1434 | case USB_DEVICE_LTM_ENABLE: |
| 1435 | if (dummy_hcd_to_hcd(dum_hcd)->speed == |
| 1436 | HCD_USB3) |
| 1437 | w_value = USB_DEV_STAT_LTM_ENABLED; |
| 1438 | else |
| 1439 | ret_val = -EOPNOTSUPP; |
| 1440 | break; |
Tatyana Brokhman | 8be8a9d | 2010-11-01 17:38:05 +0200 | [diff] [blame] | 1441 | default: |
| 1442 | ret_val = -EOPNOTSUPP; |
| 1443 | } |
| 1444 | if (ret_val == 0) { |
| 1445 | dum->devstatus |= (1 << w_value); |
| 1446 | *status = 0; |
| 1447 | } |
| 1448 | } else if (setup->bRequestType == Ep_Request) { |
| 1449 | /* endpoint halt */ |
| 1450 | ep2 = find_endpoint(dum, w_index); |
| 1451 | if (!ep2 || ep2->ep.name == ep0name) { |
| 1452 | ret_val = -EOPNOTSUPP; |
| 1453 | break; |
| 1454 | } |
| 1455 | ep2->halted = 1; |
| 1456 | ret_val = 0; |
| 1457 | *status = 0; |
| 1458 | } |
| 1459 | break; |
| 1460 | case USB_REQ_CLEAR_FEATURE: |
| 1461 | if (setup->bRequestType == Dev_Request) { |
| 1462 | ret_val = 0; |
| 1463 | switch (w_value) { |
| 1464 | case USB_DEVICE_REMOTE_WAKEUP: |
| 1465 | w_value = USB_DEVICE_REMOTE_WAKEUP; |
| 1466 | break; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1467 | case USB_DEVICE_U1_ENABLE: |
| 1468 | if (dummy_hcd_to_hcd(dum_hcd)->speed == |
| 1469 | HCD_USB3) |
| 1470 | w_value = USB_DEV_STAT_U1_ENABLED; |
| 1471 | else |
| 1472 | ret_val = -EOPNOTSUPP; |
| 1473 | break; |
| 1474 | case USB_DEVICE_U2_ENABLE: |
| 1475 | if (dummy_hcd_to_hcd(dum_hcd)->speed == |
| 1476 | HCD_USB3) |
| 1477 | w_value = USB_DEV_STAT_U2_ENABLED; |
| 1478 | else |
| 1479 | ret_val = -EOPNOTSUPP; |
| 1480 | break; |
| 1481 | case USB_DEVICE_LTM_ENABLE: |
| 1482 | if (dummy_hcd_to_hcd(dum_hcd)->speed == |
| 1483 | HCD_USB3) |
| 1484 | w_value = USB_DEV_STAT_LTM_ENABLED; |
| 1485 | else |
| 1486 | ret_val = -EOPNOTSUPP; |
| 1487 | break; |
Tatyana Brokhman | 8be8a9d | 2010-11-01 17:38:05 +0200 | [diff] [blame] | 1488 | default: |
| 1489 | ret_val = -EOPNOTSUPP; |
| 1490 | break; |
| 1491 | } |
| 1492 | if (ret_val == 0) { |
| 1493 | dum->devstatus &= ~(1 << w_value); |
| 1494 | *status = 0; |
| 1495 | } |
| 1496 | } else if (setup->bRequestType == Ep_Request) { |
| 1497 | /* endpoint halt */ |
| 1498 | ep2 = find_endpoint(dum, w_index); |
| 1499 | if (!ep2) { |
| 1500 | ret_val = -EOPNOTSUPP; |
| 1501 | break; |
| 1502 | } |
| 1503 | if (!ep2->wedged) |
| 1504 | ep2->halted = 0; |
| 1505 | ret_val = 0; |
| 1506 | *status = 0; |
| 1507 | } |
| 1508 | break; |
| 1509 | case USB_REQ_GET_STATUS: |
| 1510 | if (setup->bRequestType == Dev_InRequest |
| 1511 | || setup->bRequestType == Intf_InRequest |
| 1512 | || setup->bRequestType == Ep_InRequest) { |
| 1513 | char *buf; |
| 1514 | /* |
| 1515 | * device: remote wakeup, selfpowered |
| 1516 | * interface: nothing |
| 1517 | * endpoint: halt |
| 1518 | */ |
| 1519 | buf = (char *)urb->transfer_buffer; |
| 1520 | if (urb->transfer_buffer_length > 0) { |
| 1521 | if (setup->bRequestType == Ep_InRequest) { |
| 1522 | ep2 = find_endpoint(dum, w_index); |
| 1523 | if (!ep2) { |
| 1524 | ret_val = -EOPNOTSUPP; |
| 1525 | break; |
| 1526 | } |
| 1527 | buf[0] = ep2->halted; |
| 1528 | } else if (setup->bRequestType == |
| 1529 | Dev_InRequest) { |
| 1530 | buf[0] = (u8)dum->devstatus; |
| 1531 | } else |
| 1532 | buf[0] = 0; |
| 1533 | } |
| 1534 | if (urb->transfer_buffer_length > 1) |
| 1535 | buf[1] = 0; |
| 1536 | urb->actual_length = min_t(u32, 2, |
| 1537 | urb->transfer_buffer_length); |
| 1538 | ret_val = 0; |
| 1539 | *status = 0; |
| 1540 | } |
| 1541 | break; |
| 1542 | } |
| 1543 | return ret_val; |
| 1544 | } |
| 1545 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | /* drive both sides of the transfers; looks like irq handlers to |
| 1547 | * both drivers except the callbacks aren't in_irq(). |
| 1548 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1549 | static void dummy_timer(unsigned long _dum_hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1551 | struct dummy_hcd *dum_hcd = (struct dummy_hcd *) _dum_hcd; |
| 1552 | struct dummy *dum = dum_hcd->dum; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | struct urbp *urbp, *tmp; |
| 1554 | unsigned long flags; |
| 1555 | int limit, total; |
| 1556 | int i; |
| 1557 | |
| 1558 | /* simplistic model for one frame's bandwidth */ |
| 1559 | switch (dum->gadget.speed) { |
| 1560 | case USB_SPEED_LOW: |
| 1561 | total = 8/*bytes*/ * 12/*packets*/; |
| 1562 | break; |
| 1563 | case USB_SPEED_FULL: |
| 1564 | total = 64/*bytes*/ * 19/*packets*/; |
| 1565 | break; |
| 1566 | case USB_SPEED_HIGH: |
| 1567 | total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; |
| 1568 | break; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1569 | case USB_SPEED_SUPER: |
| 1570 | /* Bus speed is 500000 bytes/ms, so use a little less */ |
| 1571 | total = 490000; |
| 1572 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | default: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1574 | dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | return; |
| 1576 | } |
| 1577 | |
| 1578 | /* FIXME if HZ != 1000 this will probably misbehave ... */ |
| 1579 | |
| 1580 | /* look at each urb queued by the host side driver */ |
| 1581 | spin_lock_irqsave (&dum->lock, flags); |
| 1582 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1583 | if (!dum_hcd->udev) { |
| 1584 | dev_err(dummy_dev(dum_hcd), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | "timer fired with no URBs pending?\n"); |
| 1586 | spin_unlock_irqrestore (&dum->lock, flags); |
| 1587 | return; |
| 1588 | } |
| 1589 | |
| 1590 | for (i = 0; i < DUMMY_ENDPOINTS; i++) { |
| 1591 | if (!ep_name [i]) |
| 1592 | break; |
| 1593 | dum->ep [i].already_seen = 0; |
| 1594 | } |
| 1595 | |
| 1596 | restart: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1597 | 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] | 1598 | struct urb *urb; |
| 1599 | struct dummy_request *req; |
| 1600 | u8 address; |
| 1601 | struct dummy_ep *ep = NULL; |
| 1602 | int type; |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1603 | int status = -EINPROGRESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1604 | |
| 1605 | urb = urbp->urb; |
Alan Stern | eb23105 | 2007-08-21 15:40:36 -0400 | [diff] [blame] | 1606 | if (urb->unlinked) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | goto return_urb; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1608 | else if (dum_hcd->rh_state != DUMMY_RH_RUNNING) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1609 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | type = usb_pipetype (urb->pipe); |
| 1611 | |
| 1612 | /* used up this frame's non-periodic bandwidth? |
| 1613 | * FIXME there's infinite bandwidth for control and |
| 1614 | * periodic transfers ... unrealistic. |
| 1615 | */ |
| 1616 | if (total <= 0 && type == PIPE_BULK) |
| 1617 | continue; |
| 1618 | |
| 1619 | /* find the gadget's ep for this request (if configured) */ |
| 1620 | address = usb_pipeendpoint (urb->pipe); |
| 1621 | if (usb_pipein (urb->pipe)) |
| 1622 | address |= USB_DIR_IN; |
| 1623 | ep = find_endpoint(dum, address); |
| 1624 | if (!ep) { |
| 1625 | /* set_configuration() disagreement */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1626 | dev_dbg(dummy_dev(dum_hcd), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | "no ep configured for urb %p\n", |
| 1628 | urb); |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1629 | status = -EPROTO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | goto return_urb; |
| 1631 | } |
| 1632 | |
| 1633 | if (ep->already_seen) |
| 1634 | continue; |
| 1635 | ep->already_seen = 1; |
| 1636 | if (ep == &dum->ep [0] && urb->error_count) { |
| 1637 | ep->setup_stage = 1; /* a new urb */ |
| 1638 | urb->error_count = 0; |
| 1639 | } |
| 1640 | if (ep->halted && !ep->setup_stage) { |
| 1641 | /* NOTE: must not be iso! */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1642 | dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | ep->ep.name, urb); |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1644 | status = -EPIPE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | goto return_urb; |
| 1646 | } |
| 1647 | /* FIXME make sure both ends agree on maxpacket */ |
| 1648 | |
| 1649 | /* handle control requests */ |
| 1650 | if (ep == &dum->ep [0] && ep->setup_stage) { |
| 1651 | struct usb_ctrlrequest setup; |
| 1652 | int value = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | |
| 1654 | setup = *(struct usb_ctrlrequest*) urb->setup_packet; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1655 | /* paranoia, in case of stale queued data */ |
| 1656 | list_for_each_entry (req, &ep->queue, queue) { |
| 1657 | list_del_init (&req->queue); |
| 1658 | req->req.status = -EOVERFLOW; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1659 | dev_dbg (udc_dev(dum), "stale req = %p\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1660 | req); |
| 1661 | |
| 1662 | spin_unlock (&dum->lock); |
| 1663 | req->req.complete (&ep->ep, &req->req); |
| 1664 | spin_lock (&dum->lock); |
| 1665 | ep->already_seen = 0; |
| 1666 | goto restart; |
| 1667 | } |
| 1668 | |
| 1669 | /* gadget driver never sees set_address or operations |
| 1670 | * on standard feature flags. some hardware doesn't |
| 1671 | * even expose them. |
| 1672 | */ |
| 1673 | ep->last_io = jiffies; |
| 1674 | ep->setup_stage = 0; |
| 1675 | ep->halted = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1677 | value = handle_control_request(dum_hcd, urb, &setup, |
Tatyana Brokhman | 8be8a9d | 2010-11-01 17:38:05 +0200 | [diff] [blame] | 1678 | &status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1679 | |
| 1680 | /* gadget driver handles all other requests. block |
| 1681 | * until setup() returns; no reentrancy issues etc. |
| 1682 | */ |
| 1683 | if (value > 0) { |
| 1684 | spin_unlock (&dum->lock); |
| 1685 | value = dum->driver->setup (&dum->gadget, |
| 1686 | &setup); |
| 1687 | spin_lock (&dum->lock); |
| 1688 | |
| 1689 | if (value >= 0) { |
| 1690 | /* no delays (max 64KB data stage) */ |
| 1691 | limit = 64*1024; |
| 1692 | goto treat_control_like_bulk; |
| 1693 | } |
| 1694 | /* error, see below */ |
| 1695 | } |
| 1696 | |
| 1697 | if (value < 0) { |
| 1698 | if (value != -EOPNOTSUPP) |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 1699 | dev_dbg (udc_dev(dum), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | "setup --> %d\n", |
| 1701 | value); |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1702 | status = -EPIPE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1703 | urb->actual_length = 0; |
| 1704 | } |
| 1705 | |
| 1706 | goto return_urb; |
| 1707 | } |
| 1708 | |
| 1709 | /* non-control requests */ |
| 1710 | limit = total; |
| 1711 | switch (usb_pipetype (urb->pipe)) { |
| 1712 | case PIPE_ISOCHRONOUS: |
| 1713 | /* FIXME is it urb->interval since the last xfer? |
| 1714 | * use urb->iso_frame_desc[i]. |
| 1715 | * complete whether or not ep has requests queued. |
| 1716 | * report random errors, to debug drivers. |
| 1717 | */ |
| 1718 | limit = max (limit, periodic_bytes (dum, ep)); |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1719 | status = -ENOSYS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | break; |
| 1721 | |
| 1722 | case PIPE_INTERRUPT: |
| 1723 | /* FIXME is it urb->interval since the last xfer? |
| 1724 | * this almost certainly polls too fast. |
| 1725 | */ |
| 1726 | limit = max (limit, periodic_bytes (dum, ep)); |
| 1727 | /* FALLTHROUGH */ |
| 1728 | |
| 1729 | // case PIPE_BULK: case PIPE_CONTROL: |
| 1730 | default: |
| 1731 | treat_control_like_bulk: |
| 1732 | ep->last_io = jiffies; |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1733 | total = transfer(dum, urb, ep, limit, &status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | break; |
| 1735 | } |
| 1736 | |
| 1737 | /* incomplete transfer? */ |
Alan Stern | 4d2f110 | 2007-08-24 15:40:10 -0400 | [diff] [blame] | 1738 | if (status == -EINPROGRESS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | continue; |
| 1740 | |
| 1741 | return_urb: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1742 | list_del (&urbp->urbp_list); |
| 1743 | kfree (urbp); |
| 1744 | if (ep) |
| 1745 | ep->already_seen = ep->setup_stage = 0; |
| 1746 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1747 | 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] | 1748 | spin_unlock (&dum->lock); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1749 | usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | spin_lock (&dum->lock); |
| 1751 | |
| 1752 | goto restart; |
| 1753 | } |
| 1754 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1755 | if (list_empty(&dum_hcd->urbp_list)) { |
| 1756 | usb_put_dev(dum_hcd->udev); |
| 1757 | dum_hcd->udev = NULL; |
| 1758 | } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1759 | /* want a 1 msec delay here */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1760 | mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | } |
| 1762 | |
| 1763 | spin_unlock_irqrestore (&dum->lock, flags); |
| 1764 | } |
| 1765 | |
| 1766 | /*-------------------------------------------------------------------------*/ |
| 1767 | |
| 1768 | #define PORT_C_MASK \ |
Alan Stern | c2db8b5 | 2005-04-29 16:30:48 -0400 | [diff] [blame] | 1769 | ((USB_PORT_STAT_C_CONNECTION \ |
| 1770 | | USB_PORT_STAT_C_ENABLE \ |
| 1771 | | USB_PORT_STAT_C_SUSPEND \ |
| 1772 | | USB_PORT_STAT_C_OVERCURRENT \ |
| 1773 | | USB_PORT_STAT_C_RESET) << 16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | |
| 1775 | static int dummy_hub_status (struct usb_hcd *hcd, char *buf) |
| 1776 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1777 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | unsigned long flags; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1779 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1781 | dum_hcd = hcd_to_dummy_hcd(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1783 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
Alan Stern | 541c7d4 | 2010-06-22 16:39:10 -0400 | [diff] [blame] | 1784 | if (!HCD_HW_ACCESSIBLE(hcd)) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1785 | goto done; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1786 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1787 | if (dum_hcd->resuming && time_after_eq(jiffies, dum_hcd->re_timeout)) { |
| 1788 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); |
| 1789 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; |
| 1790 | set_link_state(dum_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1791 | } |
| 1792 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1793 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | *buf = (1 << 1); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1795 | dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n", |
| 1796 | dum_hcd->port_status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | retval = 1; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1798 | if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1799 | usb_hcd_resume_root_hub (hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | } |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1801 | done: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1802 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | return retval; |
| 1804 | } |
| 1805 | |
| 1806 | static inline void |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1807 | ss_hub_descriptor(struct usb_hub_descriptor *desc) |
| 1808 | { |
| 1809 | memset(desc, 0, sizeof *desc); |
| 1810 | desc->bDescriptorType = 0x2a; |
| 1811 | desc->bDescLength = 12; |
| 1812 | desc->wHubCharacteristics = cpu_to_le16(0x0001); |
| 1813 | desc->bNbrPorts = 1; |
| 1814 | desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/ |
| 1815 | desc->u.ss.DeviceRemovable = 0xffff; |
| 1816 | } |
| 1817 | |
| 1818 | static inline void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | hub_descriptor (struct usb_hub_descriptor *desc) |
| 1820 | { |
| 1821 | memset (desc, 0, sizeof *desc); |
| 1822 | desc->bDescriptorType = 0x29; |
| 1823 | desc->bDescLength = 9; |
Al Viro | fd05e72 | 2008-04-28 07:00:16 +0100 | [diff] [blame] | 1824 | desc->wHubCharacteristics = cpu_to_le16(0x0001); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1825 | desc->bNbrPorts = 1; |
John Youn | dbe79bb | 2001-09-17 00:00:00 -0700 | [diff] [blame] | 1826 | desc->u.hs.DeviceRemovable[0] = 0xff; |
| 1827 | desc->u.hs.DeviceRemovable[1] = 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | } |
| 1829 | |
| 1830 | static int dummy_hub_control ( |
| 1831 | struct usb_hcd *hcd, |
| 1832 | u16 typeReq, |
| 1833 | u16 wValue, |
| 1834 | u16 wIndex, |
| 1835 | char *buf, |
| 1836 | u16 wLength |
| 1837 | ) { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1838 | struct dummy_hcd *dum_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1839 | int retval = 0; |
| 1840 | unsigned long flags; |
| 1841 | |
Alan Stern | 541c7d4 | 2010-06-22 16:39:10 -0400 | [diff] [blame] | 1842 | if (!HCD_HW_ACCESSIBLE(hcd)) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 1843 | return -ETIMEDOUT; |
| 1844 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1845 | dum_hcd = hcd_to_dummy_hcd(hcd); |
| 1846 | |
| 1847 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | switch (typeReq) { |
| 1849 | case ClearHubFeature: |
| 1850 | break; |
| 1851 | case ClearPortFeature: |
| 1852 | switch (wValue) { |
| 1853 | case USB_PORT_FEAT_SUSPEND: |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1854 | if (hcd->speed == HCD_USB3) { |
| 1855 | dev_dbg(dummy_dev(dum_hcd), |
| 1856 | "USB_PORT_FEAT_SUSPEND req not " |
| 1857 | "supported for USB 3.0 roothub\n"); |
| 1858 | goto error; |
| 1859 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1860 | if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1861 | /* 20msec resume signaling */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1862 | dum_hcd->resuming = 1; |
| 1863 | dum_hcd->re_timeout = jiffies + |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1864 | msecs_to_jiffies(20); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | } |
| 1866 | break; |
| 1867 | case USB_PORT_FEAT_POWER: |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1868 | if (hcd->speed == HCD_USB3) { |
| 1869 | if (dum_hcd->port_status & USB_PORT_STAT_POWER) |
| 1870 | dev_dbg(dummy_dev(dum_hcd), |
| 1871 | "power-off\n"); |
| 1872 | } else |
| 1873 | if (dum_hcd->port_status & |
| 1874 | USB_SS_PORT_STAT_POWER) |
| 1875 | dev_dbg(dummy_dev(dum_hcd), |
| 1876 | "power-off\n"); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1877 | /* FALLS THROUGH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1878 | default: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1879 | dum_hcd->port_status &= ~(1 << wValue); |
| 1880 | set_link_state(dum_hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | } |
| 1882 | break; |
| 1883 | case GetHubDescriptor: |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1884 | if (hcd->speed == HCD_USB3 && |
| 1885 | (wLength < USB_DT_SS_HUB_SIZE || |
| 1886 | wValue != (USB_DT_SS_HUB << 8))) { |
| 1887 | dev_dbg(dummy_dev(dum_hcd), |
| 1888 | "Wrong hub descriptor type for " |
| 1889 | "USB 3.0 roothub.\n"); |
| 1890 | goto error; |
| 1891 | } |
| 1892 | if (hcd->speed == HCD_USB3) |
| 1893 | ss_hub_descriptor((struct usb_hub_descriptor *) buf); |
| 1894 | else |
| 1895 | hub_descriptor((struct usb_hub_descriptor *) buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1896 | break; |
| 1897 | case GetHubStatus: |
Harvey Harrison | 551509d | 2009-02-11 14:11:36 -0800 | [diff] [blame] | 1898 | *(__le32 *) buf = cpu_to_le32 (0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | break; |
| 1900 | case GetPortStatus: |
| 1901 | if (wIndex != 1) |
| 1902 | retval = -EPIPE; |
| 1903 | |
| 1904 | /* whoever resets or resumes must GetPortStatus to |
| 1905 | * complete it!! |
| 1906 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1907 | if (dum_hcd->resuming && |
| 1908 | time_after_eq(jiffies, dum_hcd->re_timeout)) { |
| 1909 | dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); |
| 1910 | dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1912 | if ((dum_hcd->port_status & USB_PORT_STAT_RESET) != 0 && |
| 1913 | time_after_eq(jiffies, dum_hcd->re_timeout)) { |
| 1914 | dum_hcd->port_status |= (USB_PORT_STAT_C_RESET << 16); |
| 1915 | dum_hcd->port_status &= ~USB_PORT_STAT_RESET; |
| 1916 | if (dum_hcd->dum->pullup) { |
| 1917 | dum_hcd->port_status |= USB_PORT_STAT_ENABLE; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1918 | |
| 1919 | if (hcd->speed < HCD_USB3) { |
| 1920 | switch (dum_hcd->dum->gadget.speed) { |
| 1921 | case USB_SPEED_HIGH: |
| 1922 | dum_hcd->port_status |= |
| 1923 | USB_PORT_STAT_HIGH_SPEED; |
| 1924 | break; |
| 1925 | case USB_SPEED_LOW: |
| 1926 | dum_hcd->dum->gadget.ep0-> |
| 1927 | maxpacket = 8; |
| 1928 | dum_hcd->port_status |= |
| 1929 | USB_PORT_STAT_LOW_SPEED; |
| 1930 | break; |
| 1931 | default: |
| 1932 | dum_hcd->dum->gadget.speed = |
| 1933 | USB_SPEED_FULL; |
| 1934 | break; |
| 1935 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | } |
| 1937 | } |
| 1938 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1939 | set_link_state(dum_hcd); |
| 1940 | ((__le16 *) buf)[0] = cpu_to_le16 (dum_hcd->port_status); |
| 1941 | ((__le16 *) buf)[1] = cpu_to_le16 (dum_hcd->port_status >> 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | break; |
| 1943 | case SetHubFeature: |
| 1944 | retval = -EPIPE; |
| 1945 | break; |
| 1946 | case SetPortFeature: |
| 1947 | switch (wValue) { |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1948 | case USB_PORT_FEAT_LINK_STATE: |
| 1949 | if (hcd->speed != HCD_USB3) { |
| 1950 | dev_dbg(dummy_dev(dum_hcd), |
| 1951 | "USB_PORT_FEAT_LINK_STATE req not " |
| 1952 | "supported for USB 2.0 roothub\n"); |
| 1953 | goto error; |
| 1954 | } |
| 1955 | /* |
| 1956 | * Since this is dummy we don't have an actual link so |
| 1957 | * there is nothing to do for the SET_LINK_STATE cmd |
| 1958 | */ |
| 1959 | break; |
| 1960 | case USB_PORT_FEAT_U1_TIMEOUT: |
| 1961 | case USB_PORT_FEAT_U2_TIMEOUT: |
| 1962 | /* TODO: add suspend/resume support! */ |
| 1963 | if (hcd->speed != HCD_USB3) { |
| 1964 | dev_dbg(dummy_dev(dum_hcd), |
| 1965 | "USB_PORT_FEAT_U1/2_TIMEOUT req not " |
| 1966 | "supported for USB 2.0 roothub\n"); |
| 1967 | goto error; |
| 1968 | } |
| 1969 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | case USB_PORT_FEAT_SUSPEND: |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1971 | /* Applicable only for USB2.0 hub */ |
| 1972 | if (hcd->speed == HCD_USB3) { |
| 1973 | dev_dbg(dummy_dev(dum_hcd), |
| 1974 | "USB_PORT_FEAT_SUSPEND req not " |
| 1975 | "supported for USB 3.0 roothub\n"); |
| 1976 | goto error; |
| 1977 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1978 | if (dum_hcd->active) { |
| 1979 | dum_hcd->port_status |= USB_PORT_STAT_SUSPEND; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1980 | |
| 1981 | /* HNP would happen here; for now we |
| 1982 | * assume b_bus_req is always true. |
| 1983 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1984 | set_link_state(dum_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1985 | if (((1 << USB_DEVICE_B_HNP_ENABLE) |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1986 | & dum_hcd->dum->devstatus) != 0) |
| 1987 | dev_dbg(dummy_dev(dum_hcd), |
Alan Stern | 5742b0c | 2005-05-02 11:25:17 -0400 | [diff] [blame] | 1988 | "no HNP yet!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | } |
| 1990 | break; |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1991 | case USB_PORT_FEAT_POWER: |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1992 | if (hcd->speed == HCD_USB3) |
| 1993 | dum_hcd->port_status |= USB_SS_PORT_STAT_POWER; |
| 1994 | else |
| 1995 | dum_hcd->port_status |= USB_PORT_STAT_POWER; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 1996 | set_link_state(dum_hcd); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 1997 | break; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 1998 | case USB_PORT_FEAT_BH_PORT_RESET: |
| 1999 | /* Applicable only for USB3.0 hub */ |
| 2000 | if (hcd->speed != HCD_USB3) { |
| 2001 | dev_dbg(dummy_dev(dum_hcd), |
| 2002 | "USB_PORT_FEAT_BH_PORT_RESET req not " |
| 2003 | "supported for USB 2.0 roothub\n"); |
| 2004 | goto error; |
| 2005 | } |
| 2006 | /* FALLS THROUGH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | case USB_PORT_FEAT_RESET: |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 2008 | /* if it's already enabled, disable */ |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2009 | if (hcd->speed == HCD_USB3) { |
| 2010 | dum_hcd->port_status = 0; |
| 2011 | dum_hcd->port_status = |
| 2012 | (USB_SS_PORT_STAT_POWER | |
| 2013 | USB_PORT_STAT_CONNECTION | |
| 2014 | USB_PORT_STAT_RESET); |
| 2015 | } else |
| 2016 | dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 2017 | | USB_PORT_STAT_LOW_SPEED |
| 2018 | | USB_PORT_STAT_HIGH_SPEED); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2019 | /* |
| 2020 | * We want to reset device status. All but the |
| 2021 | * Self powered feature |
| 2022 | */ |
| 2023 | dum_hcd->dum->devstatus &= |
| 2024 | (1 << USB_DEVICE_SELF_POWERED); |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2025 | /* |
| 2026 | * FIXME USB3.0: what is the correct reset signaling |
| 2027 | * interval? Is it still 50msec as for HS? |
| 2028 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2029 | dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50); |
Alan Stern | f1c39fa | 2005-05-03 16:24:04 -0400 | [diff] [blame] | 2030 | /* FALLS THROUGH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | default: |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2032 | if (hcd->speed == HCD_USB3) { |
| 2033 | if ((dum_hcd->port_status & |
| 2034 | USB_SS_PORT_STAT_POWER) != 0) { |
| 2035 | dum_hcd->port_status |= (1 << wValue); |
| 2036 | set_link_state(dum_hcd); |
| 2037 | } |
| 2038 | } else |
| 2039 | if ((dum_hcd->port_status & |
| 2040 | USB_PORT_STAT_POWER) != 0) { |
| 2041 | dum_hcd->port_status |= (1 << wValue); |
| 2042 | set_link_state(dum_hcd); |
| 2043 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2044 | } |
| 2045 | break; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2046 | case GetPortErrorCount: |
| 2047 | if (hcd->speed != HCD_USB3) { |
| 2048 | dev_dbg(dummy_dev(dum_hcd), |
| 2049 | "GetPortErrorCount req not " |
| 2050 | "supported for USB 2.0 roothub\n"); |
| 2051 | goto error; |
| 2052 | } |
| 2053 | /* We'll always return 0 since this is a dummy hub */ |
| 2054 | *(__le32 *) buf = cpu_to_le32(0); |
| 2055 | break; |
| 2056 | case SetHubDepth: |
| 2057 | if (hcd->speed != HCD_USB3) { |
| 2058 | dev_dbg(dummy_dev(dum_hcd), |
| 2059 | "SetHubDepth req not supported for " |
| 2060 | "USB 2.0 roothub\n"); |
| 2061 | goto error; |
| 2062 | } |
| 2063 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2064 | default: |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2065 | dev_dbg(dummy_dev(dum_hcd), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | "hub control req%04x v%04x i%04x l%d\n", |
| 2067 | typeReq, wValue, wIndex, wLength); |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2068 | error: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | /* "protocol stall" on error */ |
| 2070 | retval = -EPIPE; |
| 2071 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2072 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Alan Stern | 685eb93 | 2005-05-03 16:27:26 -0400 | [diff] [blame] | 2073 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2074 | if ((dum_hcd->port_status & PORT_C_MASK) != 0) |
Alan Stern | 685eb93 | 2005-05-03 16:27:26 -0400 | [diff] [blame] | 2075 | usb_hcd_poll_rh_status (hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2076 | return retval; |
| 2077 | } |
| 2078 | |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 2079 | static int dummy_bus_suspend (struct usb_hcd *hcd) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2080 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2081 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2082 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 2083 | dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2084 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2085 | spin_lock_irq(&dum_hcd->dum->lock); |
| 2086 | dum_hcd->rh_state = DUMMY_RH_SUSPENDED; |
| 2087 | set_link_state(dum_hcd); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2088 | hcd->state = HC_STATE_SUSPENDED; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2089 | spin_unlock_irq(&dum_hcd->dum->lock); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2090 | return 0; |
| 2091 | } |
| 2092 | |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 2093 | static int dummy_bus_resume (struct usb_hcd *hcd) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2094 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2095 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2096 | int rc = 0; |
| 2097 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 2098 | dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2099 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2100 | spin_lock_irq(&dum_hcd->dum->lock); |
Alan Stern | 541c7d4 | 2010-06-22 16:39:10 -0400 | [diff] [blame] | 2101 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
Alan Stern | cfa59da | 2007-06-21 16:25:35 -0400 | [diff] [blame] | 2102 | rc = -ESHUTDOWN; |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2103 | } else { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2104 | dum_hcd->rh_state = DUMMY_RH_RUNNING; |
| 2105 | set_link_state(dum_hcd); |
| 2106 | if (!list_empty(&dum_hcd->urbp_list)) |
| 2107 | mod_timer(&dum_hcd->timer, jiffies); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2108 | hcd->state = HC_STATE_RUNNING; |
| 2109 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2110 | spin_unlock_irq(&dum_hcd->dum->lock); |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2111 | return rc; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2112 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2113 | |
| 2114 | /*-------------------------------------------------------------------------*/ |
| 2115 | |
| 2116 | static inline ssize_t |
| 2117 | show_urb (char *buf, size_t size, struct urb *urb) |
| 2118 | { |
| 2119 | int ep = usb_pipeendpoint (urb->pipe); |
| 2120 | |
| 2121 | return snprintf (buf, size, |
| 2122 | "urb/%p %s ep%d%s%s len %d/%d\n", |
| 2123 | urb, |
| 2124 | ({ char *s; |
| 2125 | switch (urb->dev->speed) { |
Tatyana Brokhman | 7c884fe | 2011-06-28 16:33:52 +0300 | [diff] [blame] | 2126 | case USB_SPEED_LOW: |
| 2127 | s = "ls"; |
| 2128 | break; |
| 2129 | case USB_SPEED_FULL: |
| 2130 | s = "fs"; |
| 2131 | break; |
| 2132 | case USB_SPEED_HIGH: |
| 2133 | s = "hs"; |
| 2134 | break; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2135 | case USB_SPEED_SUPER: |
| 2136 | s = "ss"; |
| 2137 | break; |
Tatyana Brokhman | 7c884fe | 2011-06-28 16:33:52 +0300 | [diff] [blame] | 2138 | default: |
| 2139 | s = "?"; |
| 2140 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | }; s; }), |
| 2142 | ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", |
| 2143 | ({ char *s; \ |
| 2144 | switch (usb_pipetype (urb->pipe)) { \ |
Tatyana Brokhman | 7c884fe | 2011-06-28 16:33:52 +0300 | [diff] [blame] | 2145 | case PIPE_CONTROL: \ |
| 2146 | s = ""; \ |
| 2147 | break; \ |
| 2148 | case PIPE_BULK: \ |
| 2149 | s = "-bulk"; \ |
| 2150 | break; \ |
| 2151 | case PIPE_INTERRUPT: \ |
| 2152 | s = "-int"; \ |
| 2153 | break; \ |
| 2154 | default: \ |
| 2155 | s = "-iso"; \ |
| 2156 | break; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2157 | }; s;}), |
| 2158 | urb->actual_length, urb->transfer_buffer_length); |
| 2159 | } |
| 2160 | |
| 2161 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 2162 | show_urbs (struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | { |
| 2164 | struct usb_hcd *hcd = dev_get_drvdata (dev); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2165 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | struct urbp *urbp; |
| 2167 | size_t size = 0; |
| 2168 | unsigned long flags; |
| 2169 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2170 | spin_lock_irqsave(&dum_hcd->dum->lock, flags); |
| 2171 | list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2172 | size_t temp; |
| 2173 | |
| 2174 | temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); |
| 2175 | buf += temp; |
| 2176 | size += temp; |
| 2177 | } |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2178 | spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2179 | |
| 2180 | return size; |
| 2181 | } |
| 2182 | static DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); |
| 2183 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2184 | static int dummy_start_ss(struct dummy_hcd *dum_hcd) |
| 2185 | { |
| 2186 | init_timer(&dum_hcd->timer); |
| 2187 | dum_hcd->timer.function = dummy_timer; |
| 2188 | dum_hcd->timer.data = (unsigned long)dum_hcd; |
| 2189 | dum_hcd->rh_state = DUMMY_RH_RUNNING; |
| 2190 | INIT_LIST_HEAD(&dum_hcd->urbp_list); |
| 2191 | dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET; |
| 2192 | dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING; |
| 2193 | dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1; |
| 2194 | #ifdef CONFIG_USB_OTG |
| 2195 | dummy_hcd_to_hcd(dum_hcd)->self.otg_port = 1; |
| 2196 | #endif |
| 2197 | return 0; |
| 2198 | |
| 2199 | /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ |
| 2200 | return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); |
| 2201 | } |
| 2202 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2203 | static int dummy_start(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2205 | struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2206 | |
| 2207 | /* |
| 2208 | * MASTER side init ... we emulate a root hub that'll only ever |
| 2209 | * talk to one device (the slave side). Also appears in sysfs, |
| 2210 | * just like more familiar pci-based HCDs. |
| 2211 | */ |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2212 | if (!usb_hcd_is_primary_hcd(hcd)) |
| 2213 | return dummy_start_ss(dum_hcd); |
| 2214 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2215 | spin_lock_init(&dum_hcd->dum->lock); |
| 2216 | init_timer(&dum_hcd->timer); |
| 2217 | dum_hcd->timer.function = dummy_timer; |
| 2218 | dum_hcd->timer.data = (unsigned long)dum_hcd; |
| 2219 | dum_hcd->rh_state = DUMMY_RH_RUNNING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2221 | INIT_LIST_HEAD(&dum_hcd->urbp_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | |
Alan Stern | caf29f6 | 2007-12-06 11:10:39 -0500 | [diff] [blame] | 2223 | hcd->power_budget = POWER_BUDGET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2224 | hcd->state = HC_STATE_RUNNING; |
Alan Stern | 685eb93 | 2005-05-03 16:27:26 -0400 | [diff] [blame] | 2225 | hcd->uses_new_polling = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2226 | |
Alan Stern | 5742b0c | 2005-05-02 11:25:17 -0400 | [diff] [blame] | 2227 | #ifdef CONFIG_USB_OTG |
| 2228 | hcd->self.otg_port = 1; |
| 2229 | #endif |
| 2230 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2231 | /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2232 | return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2233 | } |
| 2234 | |
| 2235 | static void dummy_stop (struct usb_hcd *hcd) |
| 2236 | { |
| 2237 | struct dummy *dum; |
| 2238 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2239 | dum = (hcd_to_dummy_hcd(hcd))->dum; |
| 2240 | device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); |
| 2241 | usb_gadget_unregister_driver(dum->driver); |
| 2242 | dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2243 | } |
| 2244 | |
| 2245 | /*-------------------------------------------------------------------------*/ |
| 2246 | |
| 2247 | static int dummy_h_get_frame (struct usb_hcd *hcd) |
| 2248 | { |
| 2249 | return dummy_g_get_frame (NULL); |
| 2250 | } |
| 2251 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2252 | static int dummy_setup(struct usb_hcd *hcd) |
| 2253 | { |
| 2254 | if (usb_hcd_is_primary_hcd(hcd)) { |
| 2255 | the_controller.hs_hcd = hcd_to_dummy_hcd(hcd); |
| 2256 | the_controller.hs_hcd->dum = &the_controller; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2257 | /* |
| 2258 | * Mark the first roothub as being USB 2.0. |
| 2259 | * The USB 3.0 roothub will be registered later by |
| 2260 | * dummy_hcd_probe() |
| 2261 | */ |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2262 | hcd->speed = HCD_USB2; |
| 2263 | hcd->self.root_hub->speed = USB_SPEED_HIGH; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2264 | } else { |
| 2265 | the_controller.ss_hcd = hcd_to_dummy_hcd(hcd); |
| 2266 | the_controller.ss_hcd->dum = &the_controller; |
| 2267 | hcd->speed = HCD_USB3; |
| 2268 | hcd->self.root_hub->speed = USB_SPEED_SUPER; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2269 | } |
| 2270 | return 0; |
| 2271 | } |
| 2272 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2273 | /* Change a group of bulk endpoints to support multiple stream IDs */ |
| 2274 | int dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, |
| 2275 | struct usb_host_endpoint **eps, unsigned int num_eps, |
| 2276 | unsigned int num_streams, gfp_t mem_flags) |
| 2277 | { |
| 2278 | if (hcd->speed != HCD_USB3) |
| 2279 | dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), |
| 2280 | "%s() - ERROR! Not supported for USB2.0 roothub\n", |
| 2281 | __func__); |
| 2282 | return 0; |
| 2283 | } |
| 2284 | |
| 2285 | /* Reverts a group of bulk endpoints back to not using stream IDs. */ |
| 2286 | int dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev, |
| 2287 | struct usb_host_endpoint **eps, unsigned int num_eps, |
| 2288 | gfp_t mem_flags) |
| 2289 | { |
| 2290 | if (hcd->speed != HCD_USB3) |
| 2291 | dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), |
| 2292 | "%s() - ERROR! Not supported for USB2.0 roothub\n", |
| 2293 | __func__); |
| 2294 | return 0; |
| 2295 | } |
| 2296 | |
| 2297 | static struct hc_driver dummy_hcd = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2298 | .description = (char *) driver_name, |
| 2299 | .product_desc = "Dummy host controller", |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2300 | .hcd_priv_size = sizeof(struct dummy_hcd), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2301 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2302 | .flags = HCD_USB3 | HCD_SHARED, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2303 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2304 | .reset = dummy_setup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | .start = dummy_start, |
| 2306 | .stop = dummy_stop, |
| 2307 | |
| 2308 | .urb_enqueue = dummy_urb_enqueue, |
| 2309 | .urb_dequeue = dummy_urb_dequeue, |
| 2310 | |
| 2311 | .get_frame_number = dummy_h_get_frame, |
| 2312 | |
| 2313 | .hub_status_data = dummy_hub_status, |
| 2314 | .hub_control = dummy_hub_control, |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 2315 | .bus_suspend = dummy_bus_suspend, |
| 2316 | .bus_resume = dummy_bus_resume, |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2317 | |
| 2318 | .alloc_streams = dummy_alloc_streams, |
| 2319 | .free_streams = dummy_free_streams, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | }; |
| 2321 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 2322 | static int dummy_hcd_probe(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2323 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2324 | struct usb_hcd *hs_hcd; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2325 | struct usb_hcd *ss_hcd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2326 | int retval; |
| 2327 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 2328 | dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2329 | |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2330 | if (!mod_data.is_super_speed) |
| 2331 | dummy_hcd.flags = HCD_USB2; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2332 | hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev)); |
| 2333 | if (!hs_hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2334 | return -ENOMEM; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2335 | hs_hcd->has_tt = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2337 | retval = usb_add_hcd(hs_hcd, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | if (retval != 0) { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2339 | usb_put_hcd(hs_hcd); |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2340 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2341 | } |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2342 | |
| 2343 | if (mod_data.is_super_speed) { |
| 2344 | ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev, |
| 2345 | dev_name(&pdev->dev), hs_hcd); |
| 2346 | if (!ss_hcd) { |
| 2347 | retval = -ENOMEM; |
| 2348 | goto dealloc_usb2_hcd; |
| 2349 | } |
| 2350 | |
| 2351 | retval = usb_add_hcd(ss_hcd, 0, 0); |
| 2352 | if (retval) |
| 2353 | goto put_usb3_hcd; |
| 2354 | } |
| 2355 | return 0; |
| 2356 | |
| 2357 | put_usb3_hcd: |
| 2358 | usb_put_hcd(ss_hcd); |
| 2359 | dealloc_usb2_hcd: |
| 2360 | usb_put_hcd(hs_hcd); |
| 2361 | the_controller.hs_hcd = the_controller.ss_hcd = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2362 | return retval; |
| 2363 | } |
| 2364 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2365 | static int dummy_hcd_remove(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | { |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2367 | struct dummy *dum; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2368 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2369 | dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2370 | |
| 2371 | if (dum->ss_hcd) { |
| 2372 | usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); |
| 2373 | usb_put_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); |
| 2374 | } |
| 2375 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2376 | usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); |
| 2377 | usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2378 | |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2379 | the_controller.hs_hcd = NULL; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2380 | the_controller.ss_hcd = NULL; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2381 | |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2382 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2383 | } |
| 2384 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 2385 | 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] | 2386 | { |
| 2387 | struct usb_hcd *hcd; |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2388 | struct dummy_hcd *dum_hcd; |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2389 | int rc = 0; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2390 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 2391 | dev_dbg (&pdev->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2392 | |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2393 | hcd = platform_get_drvdata (pdev); |
Tatyana Brokhman | cdfcbd2 | 2011-06-29 16:41:51 +0300 | [diff] [blame] | 2394 | dum_hcd = hcd_to_dummy_hcd(hcd); |
| 2395 | if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2396 | dev_warn(&pdev->dev, "Root hub isn't suspended!\n"); |
| 2397 | rc = -EBUSY; |
| 2398 | } else |
| 2399 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 2400 | return rc; |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2401 | } |
| 2402 | |
Alan Stern | 8364d6b | 2005-11-14 12:16:30 -0500 | [diff] [blame] | 2403 | static int dummy_hcd_resume (struct platform_device *pdev) |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2404 | { |
| 2405 | struct usb_hcd *hcd; |
| 2406 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 2407 | dev_dbg (&pdev->dev, "%s\n", __func__); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2408 | |
Alan Stern | 3cf0a22 | 2005-11-29 12:08:15 -0500 | [diff] [blame] | 2409 | hcd = platform_get_drvdata (pdev); |
| 2410 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2411 | usb_hcd_poll_rh_status (hcd); |
| 2412 | return 0; |
| 2413 | } |
| 2414 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2415 | static struct platform_driver dummy_hcd_driver = { |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2416 | .probe = dummy_hcd_probe, |
| 2417 | .remove = dummy_hcd_remove, |
Alan Stern | 391eca9 | 2005-05-10 15:34:16 -0400 | [diff] [blame] | 2418 | .suspend = dummy_hcd_suspend, |
| 2419 | .resume = dummy_hcd_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2420 | .driver = { |
| 2421 | .name = (char *) driver_name, |
| 2422 | .owner = THIS_MODULE, |
| 2423 | }, |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2424 | }; |
| 2425 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | /*-------------------------------------------------------------------------*/ |
| 2427 | |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2428 | static struct platform_device *the_udc_pdev; |
| 2429 | static struct platform_device *the_hcd_pdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2430 | |
| 2431 | static int __init init (void) |
| 2432 | { |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2433 | int retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | |
| 2435 | if (usb_disabled ()) |
| 2436 | return -ENODEV; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2437 | |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2438 | the_hcd_pdev = platform_device_alloc(driver_name, -1); |
| 2439 | if (!the_hcd_pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2440 | return retval; |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2441 | the_udc_pdev = platform_device_alloc(gadget_name, -1); |
| 2442 | if (!the_udc_pdev) |
| 2443 | goto err_alloc_udc; |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2444 | |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2445 | retval = platform_driver_register(&dummy_hcd_driver); |
| 2446 | if (retval < 0) |
| 2447 | goto err_register_hcd_driver; |
| 2448 | retval = platform_driver_register(&dummy_udc_driver); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2449 | if (retval < 0) |
| 2450 | goto err_register_udc_driver; |
| 2451 | |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2452 | retval = platform_device_add(the_hcd_pdev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2453 | if (retval < 0) |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2454 | goto err_add_hcd; |
Tatyana Brokhman | 1cd8fd2 | 2011-06-29 16:41:52 +0300 | [diff] [blame^] | 2455 | if (!the_controller.hs_hcd || |
| 2456 | (!the_controller.ss_hcd && mod_data.is_super_speed)) { |
Sebastian Andrzej Siewior | 865835f | 2011-04-15 20:37:06 +0200 | [diff] [blame] | 2457 | /* |
| 2458 | * The hcd was added successfully but its probe function failed |
| 2459 | * for some reason. |
| 2460 | */ |
| 2461 | retval = -EINVAL; |
| 2462 | goto err_add_udc; |
| 2463 | } |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2464 | retval = platform_device_add(the_udc_pdev); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2465 | if (retval < 0) |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2466 | goto err_add_udc; |
Sebastian Andrzej Siewior | 865835f | 2011-04-15 20:37:06 +0200 | [diff] [blame] | 2467 | if (!platform_get_drvdata(the_udc_pdev)) { |
| 2468 | /* |
| 2469 | * The udc was added successfully but its probe function failed |
| 2470 | * for some reason. |
| 2471 | */ |
| 2472 | retval = -EINVAL; |
| 2473 | goto err_probe_udc; |
| 2474 | } |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2475 | return retval; |
| 2476 | |
Sebastian Andrzej Siewior | 865835f | 2011-04-15 20:37:06 +0200 | [diff] [blame] | 2477 | err_probe_udc: |
| 2478 | platform_device_del(the_udc_pdev); |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2479 | err_add_udc: |
| 2480 | platform_device_del(the_hcd_pdev); |
| 2481 | err_add_hcd: |
| 2482 | platform_driver_unregister(&dummy_udc_driver); |
Alan Stern | d9b7625 | 2005-05-03 16:15:43 -0400 | [diff] [blame] | 2483 | err_register_udc_driver: |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2484 | platform_driver_unregister(&dummy_hcd_driver); |
| 2485 | err_register_hcd_driver: |
| 2486 | platform_device_put(the_udc_pdev); |
| 2487 | err_alloc_udc: |
| 2488 | platform_device_put(the_hcd_pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2489 | return retval; |
| 2490 | } |
| 2491 | module_init (init); |
| 2492 | |
| 2493 | static void __exit cleanup (void) |
| 2494 | { |
Alan Stern | a89a2cd | 2008-04-07 15:03:25 -0400 | [diff] [blame] | 2495 | platform_device_unregister(the_udc_pdev); |
| 2496 | platform_device_unregister(the_hcd_pdev); |
| 2497 | platform_driver_unregister(&dummy_udc_driver); |
| 2498 | platform_driver_unregister(&dummy_hcd_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | } |
| 2500 | module_exit (cleanup); |