dummy_hcd.c revision 5db539e49fc7471e23bf3c94ca304f008cb7b7f3
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dummy_hcd.c -- Dummy/Loopback USB host and device emulator driver. 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Maintainer: Alan Stern <stern@rowland.harvard.edu> 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2003 David Brownell 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2003-2005 Alan Stern 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (at your option) any later version. 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License for more details. 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * along with this program; if not, write to the Free Software 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This exposes a device side "USB gadget" API, driven by requests to a 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Linux-USB host controller driver. USB traffic is simulated; there's 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * no need for USB hardware. Use this with two other drivers: 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Gadget driver, responding to requests (slave); 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Host-side device driver, as already familiar in Linux. 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Having this all in one kernel can help some stages of development, 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bypassing some hardware (and driver) issues. UML could help too. 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DEBUG 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/config.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/smp_lock.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/timer.h> 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/list.h> 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/version.h> 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb.h> 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb_gadget.h> 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/irq.h> 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/unaligned.h> 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "../core/hcd.h" 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_DESC "USB Host+Gadget Emulator" 68391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#define DRIVER_VERSION "02 May 2005" 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char driver_name [] = "dummy_hcd"; 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char driver_desc [] = "USB Host+Gadget Emulator"; 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char gadget_name [] = "dummy_udc"; 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION (DRIVER_DESC); 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR ("David Brownell"); 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE ("GPL"); 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* gadget side driver data structres */ 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy_ep { 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head queue; 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long last_io; /* jiffies timestamp */ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget *gadget; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct usb_endpoint_descriptor *desc; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ep ep; 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned halted : 1; 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned already_seen : 1; 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned setup_stage : 1; 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy_request { 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head queue; /* ep's requests */ 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_request req; 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy_ep *usb_ep_to_dummy_ep (struct usb_ep *_ep) 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (_ep, struct dummy_ep, ep); 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy_request *usb_request_to_dummy_request 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct usb_request *_req) 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (_req, struct dummy_request, req); 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Every device has ep0 for control requests, plus up to 30 more endpoints, 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in one of two types: 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Configurable: direction (in/out), type (bulk, iso, etc), and endpoint 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * number can be changed. Names like "ep-a" are used for this type. 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Fixed Function: in other cases. some characteristics may be mutable; 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that'd be hardware-specific. Names like "ep12out-bulk" are used. 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Gadget drivers are responsible for not setting up conflicting endpoint 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * configurations, illegal or unsupported packet lengths, and so on. 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char ep0name [] = "ep0"; 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char *const ep_name [] = { 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep0name, /* everyone has ep0 */ 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* act like a net2280: high speed, six configurable endpoints */ 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep-a", "ep-b", "ep-c", "ep-d", "ep-e", "ep-f", 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* or like pxa250: fifteen fixed function endpoints */ 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int", 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int", 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso", 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep15in-int", 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* or like sa1100: two fixed function endpoints */ 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep1out-bulk", "ep2in-bulk", 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DUMMY_ENDPOINTS (sizeof(ep_name)/sizeof(char *)) 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 144d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/*-------------------------------------------------------------------------*/ 145d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FIFO_SIZE 64 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct urbp { 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head urbp_list; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 153391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 154391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternenum dummy_rh_state { 155391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_RESET, 156391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_SUSPENDED, 157391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_RUNNING 158391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern}; 159391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy { 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SLAVE/GADGET side support 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep ep [DUMMY_ENDPOINTS]; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int address; 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget gadget; 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget_driver *driver; 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request fifo_req; 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 fifo_buf [FIFO_SIZE]; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 devstatus; 173391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern unsigned udc_suspended:1; 174f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned pullup:1; 175f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned active:1; 176f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned old_active:1; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MASTER/HOST side support 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 181391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern enum dummy_rh_state rh_state; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timer_list timer; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 port_status; 184f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern u32 old_status; 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned resuming:1; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long re_timeout; 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_device *udev; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head urbp_list; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *hcd_to_dummy (struct usb_hcd *hcd) 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (struct dummy *) (hcd->hcd_priv); 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct usb_hcd *dummy_to_hcd (struct dummy *dum) 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of((void *) dum, struct usb_hcd, hcd_priv); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct device *dummy_dev (struct dummy *dum) 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dummy_to_hcd(dum)->self.controller; 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 207d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic inline struct device *udc_dev (struct dummy *dum) 208d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 209d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return dum->gadget.dev.parent; 210d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 211d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *ep_to_dummy (struct dummy_ep *ep) 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (ep->gadget, struct dummy, gadget); 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *gadget_to_dummy (struct usb_gadget *gadget) 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (gadget, struct dummy, gadget); 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *gadget_dev_to_dummy (struct device *dev) 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (dev, struct dummy, gadget.dev); 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct dummy *the_controller; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 231f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* SLAVE/GADGET SIDE UTILITY ROUTINES */ 232f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 233f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* called with spinlock held */ 234f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic void nuke (struct dummy *dum, struct dummy_ep *ep) 235f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 236f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern while (!list_empty (&ep->queue)) { 237f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy_request *req; 238f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 239f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req = list_entry (ep->queue.next, struct dummy_request, queue); 240f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern list_del_init (&req->queue); 241f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req->req.status = -ESHUTDOWN; 242f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 243f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock (&dum->lock); 244f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req->req.complete (&ep->ep, &req->req); 245f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock (&dum->lock); 246f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 247f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 248f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 249f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* caller must hold lock */ 250f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic void 251f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstop_activity (struct dummy *dum) 252f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 253f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy_ep *ep; 254f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 255f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* prevent any more requests */ 256f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->address = 0; 257f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 258f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* The timer is left running so that outstanding URBs can fail */ 259f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 260f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* nuke any pending requests first, so driver i/o is quiesced */ 261f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern list_for_each_entry (ep, &dum->gadget.ep_list, ep.ep_list) 262f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern nuke (dum, ep); 263f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 264f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* driver now does any non-usb quiescing necessary */ 265f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 266f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 267f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* caller must hold lock */ 268f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic void 269f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternset_link_state (struct dummy *dum) 270f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 271f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->active = 0; 272f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->port_status & USB_PORT_STAT_POWER) == 0) 273f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status = 0; 274391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 275391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* UDC suspend must cause a disconnect */ 276391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern else if (!dum->pullup || dum->udc_suspended) { 277f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status &= ~(USB_PORT_STAT_CONNECTION | 278f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern USB_PORT_STAT_ENABLE | 279f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern USB_PORT_STAT_LOW_SPEED | 280f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern USB_PORT_STAT_HIGH_SPEED | 281f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern USB_PORT_STAT_SUSPEND); 282f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->old_status & USB_PORT_STAT_CONNECTION) != 0) 283f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status |= (USB_PORT_STAT_C_CONNECTION << 16); 284f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } else { 285f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status |= USB_PORT_STAT_CONNECTION; 286f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->old_status & USB_PORT_STAT_CONNECTION) == 0) 287f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status |= (USB_PORT_STAT_C_CONNECTION << 16); 288f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->port_status & USB_PORT_STAT_ENABLE) == 0) 289f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status &= ~USB_PORT_STAT_SUSPEND; 290391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern else if ((dum->port_status & USB_PORT_STAT_SUSPEND) == 0 && 291391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->rh_state != DUMMY_RH_SUSPENDED) 292f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->active = 1; 293f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 294f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 295f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->port_status & USB_PORT_STAT_ENABLE) == 0 || dum->active) 296f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->resuming = 0; 297f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 298f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->port_status & USB_PORT_STAT_CONNECTION) == 0 || 299f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern (dum->port_status & USB_PORT_STAT_RESET) != 0) { 300f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->old_status & USB_PORT_STAT_CONNECTION) != 0 && 301f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern (dum->old_status & USB_PORT_STAT_RESET) == 0 && 302f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->driver) { 303f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern stop_activity (dum); 304f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock (&dum->lock); 305f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->driver->disconnect (&dum->gadget); 306f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock (&dum->lock); 307f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 308f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } else if (dum->active != dum->old_active) { 309f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->old_active && dum->driver->suspend) { 310f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock (&dum->lock); 311f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->driver->suspend (&dum->gadget); 312f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock (&dum->lock); 313f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } else if (!dum->old_active && dum->driver->resume) { 314f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock (&dum->lock); 315f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->driver->resume (&dum->gadget); 316f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock (&dum->lock); 317f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 318f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 319f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 320f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->old_status = dum->port_status; 321f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->old_active = dum->active; 322f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 323f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 324f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/*-------------------------------------------------------------------------*/ 325f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* SLAVE/GADGET SIDE DRIVER 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This only tracks gadget state. All the work is done when the host 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * side tries some (emulated) i/o operation. Real device controller 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * drivers would do real i/o using dma, fifos, irqs, timers, etc. 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define is_enabled(dum) \ 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (dum->port_status & USB_PORT_STAT_ENABLE) 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned max; 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !desc || ep->desc || _ep->name == ep0name 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || desc->bDescriptorType != USB_DT_ENDPOINT) 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver || !is_enabled (dum)) 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds max = le16_to_cpu(desc->wMaxPacketSize) & 0x3ff; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* drivers must not request bad settings, since lower levels 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (hardware or its drivers) may not check. some endpoints 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can't do iso, many have maxpacket limitations, etc. 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since this "hardware" driver is here to help debugging, we 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * have some extra sanity checks. (there could be more though, 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * especially for "ep9out" style fixed function ones.) 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EINVAL; 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (desc->bmAttributes & 0x03) { 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_BULK: 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-iso") 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || strstr (ep->ep.name, "-int")) { 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max == 512) 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* conserve return statements */ 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (max) { 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 8: case 16: case 32: case 64: 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we'll fake any legal size */ 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_INT: 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-iso")) /* bulk is ok */ 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware might not handle all packet sizes */ 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1024) 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 64) 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 8) 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_ISOC: 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-bulk") 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || strstr (ep->ep.name, "-int")) 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware might not handle all packet sizes */ 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1024) 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1023) 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* few chips support control except on ep0 */ 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _ep->maxpacket = max; 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = desc; 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 429d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d\n", 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _ep->name, 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bEndpointAddress & 0x0f, 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *val; 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (desc->bmAttributes & 0x03) { 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_BULK: val = "bulk"; break; 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_ISOC: val = "iso"; break; 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_INT: val = "intr"; break; 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: val = "ctrl"; break; 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; val; }), 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds max); 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* at this point real hardware should be NAKing transfers 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to that endpoint, until a buffer is queued to it. 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdone: 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_disable (struct usb_ep *_ep) 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !ep->desc || _ep->name == ep0name) 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = NULL; 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nuke (dum, ep); 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 468d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "disabled %s\n", _ep->name); 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_request * 4735db539e49fc7471e23bf3c94ca304f008cb7b7f3Olav Kongasdummy_alloc_request (struct usb_ep *_ep, unsigned mem_flags) 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep) 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = kmalloc (sizeof *req, mem_flags); 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!req) 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset (req, 0, sizeof *req); 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&req->queue); 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &req->req; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_free_request (struct usb_ep *_ep, struct usb_request *_req) 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = usb_request_to_dummy_request (_req); 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds WARN_ON (!list_empty (&req->queue)); 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (req); 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void * 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_alloc_buffer ( 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ep *_ep, 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned bytes, 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t *dma, 5105db539e49fc7471e23bf3c94ca304f008cb7b7f3Olav Kongas unsigned mem_flags 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *retval; 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = kmalloc (bytes, mem_flags); 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *dma = (dma_addr_t) retval; 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_free_buffer ( 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ep *_ep, 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *buf, 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dma_addr_t dma, 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned bytes 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (bytes) 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (buf); 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfifo_complete (struct usb_ep *ep, struct usb_request *req) 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 5435db539e49fc7471e23bf3c94ca304f008cb7b7f3Olav Kongasdummy_queue (struct usb_ep *_ep, struct usb_request *_req, 5445db539e49fc7471e23bf3c94ca304f008cb7b7f3Olav Kongas unsigned mem_flags) 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = usb_request_to_dummy_request (_req); 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_req || !list_empty (&req->queue) || !_req->complete) 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || (!ep->desc && _ep->name != ep0name)) 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver || !is_enabled (dum)) 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 564d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, _req, _ep->name, _req->length, _req->buf); 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -EINPROGRESS; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = 0; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* implement an emulated single-request FIFO */ 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&dum->fifo_req.queue) && 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&ep->queue) && 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->length <= FIFO_SIZE) { 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = &dum->fifo_req; 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req = *_req; 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.buf = dum->fifo_buf; 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy (dum->fifo_buf, _req->buf, _req->length); 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.context = dum; 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete = fifo_complete; 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = _req->length; 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = 0; 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_add_tail (&req->queue, &ep->queue); 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware would likely enable transfers here, in case 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it'd been left NAKing. 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = -EINVAL; 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req = NULL; 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !_req) 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (&req->req == _req) { 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -ECONNRESET; 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval == 0) { 627d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "dequeued req %p from %s, len %d buf %p\n", 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req, _ep->name, _req->length, _req->buf); 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_set_halt (struct usb_ep *_ep, int value) 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep) 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!value) 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 0; 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !list_empty (&ep->queue)) 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EAGAIN; 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 1; 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME clear emulated data toggle too */ 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_ep_ops dummy_ep_ops = { 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .enable = dummy_enable, 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disable = dummy_disable, 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .alloc_request = dummy_alloc_request, 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .free_request = dummy_free_request, 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .alloc_buffer = dummy_alloc_buffer, 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .free_buffer = dummy_free_buffer, 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* map, unmap, ... eventually hook the "generic" dma calls */ 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .queue = dummy_queue, 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .dequeue = dummy_dequeue, 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_halt = dummy_set_halt, 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* there are both host and device side versions of this call ... */ 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_g_get_frame (struct usb_gadget *_gadget) 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timeval tv; 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_gettimeofday (&tv); 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tv.tv_usec / 1000; 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_wakeup (struct usb_gadget *_gadget) 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = gadget_to_dummy (_gadget); 691391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (!(dum->devstatus & ( (1 << USB_DEVICE_B_HNP_ENABLE) 6925742b0c95026c817d9c266174ca39a909e8d38caAlan Stern | (1 << USB_DEVICE_REMOTE_WAKEUP)))) 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 694391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if ((dum->port_status & USB_PORT_STAT_CONNECTION) == 0) 695391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ENOLINK; 696391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if ((dum->port_status & USB_PORT_STAT_SUSPEND) == 0 && 697391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->rh_state != DUMMY_RH_SUSPENDED) 698391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -EIO; 699391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 700391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* FIXME: What if the root hub is suspended but the port isn't? */ 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* hub notices our request, issues downstream resume, etc */ 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->resuming = 1; 704f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->re_timeout = jiffies + msecs_to_jiffies(20); 705685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern mod_timer (&dummy_to_hcd (dum)->rh_timer, dum->re_timeout); 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = gadget_to_dummy (_gadget); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value) 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic int dummy_pullup (struct usb_gadget *_gadget, int value) 722f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 723f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy *dum; 724f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned long flags; 725f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 726f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum = gadget_to_dummy (_gadget); 727f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock_irqsave (&dum->lock, flags); 728f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = (value != 0); 729f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 730f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock_irqrestore (&dum->lock, flags); 731685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern 732685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 733f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern return 0; 734f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 735f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_gadget_ops dummy_ops = { 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame = dummy_g_get_frame, 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .wakeup = dummy_wakeup, 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_selfpowered = dummy_set_selfpowered, 740f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern .pullup = dummy_pullup, 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* "function" sysfs attribute */ 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 74710523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_function (struct device *dev, struct device_attribute *attr, char *buf) 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = gadget_dev_to_dummy (dev); 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver || !dum->driver->function) 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 755cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Sternstatic DEVICE_ATTR (function, S_IRUGO, show_function, NULL); 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver registration/unregistration. 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is basically hardware-specific; there's usually only one real USB 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * device (not host) controller since that's how USB devices are intended 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to work. So most implementations of these api calls will rely on the 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fact that only one driver will ever bind to the hardware. But curious 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hardware can be built with discrete components, so the gadget API doesn't 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * require that assumption. 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * For this emulator, it might be convenient to create a usb slave device 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for each driver that registers: just add to a big root hub. 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsusb_gadget_register_driver (struct usb_gadget_driver *driver) 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = the_controller; 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval, i; 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum) 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dum->driver) 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!driver->bind || !driver->unbind || !driver->setup 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || driver->speed == USB_SPEED_UNKNOWN) 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SLAVE side init ... the layer above hardware, which 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can't enumerate without help from the driver we're binding. 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7915742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus = 0; 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&dum->gadget.ep_list); 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DUMMY_ENDPOINTS; i++) { 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = &dum->ep [i]; 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep_name [i]) 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.name = ep_name [i]; 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.ops = &dummy_ep_ops; 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_add_tail (&ep->ep.ep_list, &dum->gadget.ep_list); 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = ep->already_seen = ep->setup_stage = 0; 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.maxpacket = ~0; 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->gadget = &dum->gadget; 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = NULL; 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&ep->queue); 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.ep0 = &dum->ep [0].ep; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->ep [0].ep.maxpacket = 64; 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&dum->ep [0].ep.ep_list); 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD(&dum->fifo_req.queue); 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = driver; 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.dev.driver = &driver->driver; 818d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((retval = driver->bind (&dum->gadget)) != 0) { 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = NULL; 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.dev.driver = NULL; 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.bus = dum->gadget.dev.parent->bus; 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver_register (&driver->driver); 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds device_bind_driver (&dum->gadget.dev); 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* khubd will enumerate this in a while */ 831f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock_irq (&dum->lock); 832f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = 1; 833f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 834f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock_irq (&dum->lock); 835685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern 836685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL (usb_gadget_register_driver); 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsusb_gadget_unregister_driver (struct usb_gadget_driver *driver) 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = the_controller; 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum) 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!driver || driver != dum->driver) 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 852d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 856f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = 0; 857f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->unbind (&dum->gadget); 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = NULL; 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds device_release_driver (&dum->gadget.dev); 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver_unregister (&driver->driver); 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 866f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock_irqsave (&dum->lock, flags); 867f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = 0; 868f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 869f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock_irqrestore (&dum->lock, flags); 870f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 871685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL (usb_gadget_unregister_driver); 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_enabled 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 878cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern/* just declare this in any driver that really need it */ 879cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Sternextern int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode); 880cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint net2280_set_fifo_mode (struct usb_gadget *gadget, int mode) 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOSYS; 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL (net2280_set_fifo_mode); 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 887d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 888d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/* The gadget structure is stored inside the hcd structure and will be 889d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern * released along with it. */ 890d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic void 891d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sterndummy_gadget_release (struct device *dev) 892d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 893d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern#if 0 /* usb_bus_put isn't EXPORTed! */ 894d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern struct dummy *dum = gadget_dev_to_dummy (dev); 895d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 896d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern usb_bus_put (&dummy_to_hcd (dum)->self); 897d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern#endif 898d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 899d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 900d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic int dummy_udc_probe (struct device *dev) 901d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 902d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern struct dummy *dum = the_controller; 903d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern int rc; 904d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 905d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.name = gadget_name; 906d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.ops = &dummy_ops; 907d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.is_dualspeed = 1; 908d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 909d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern /* maybe claim OTG support, though we won't complete HNP */ 910d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.is_otg = (dummy_to_hcd(dum)->self.otg_port != 0); 911d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 912d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern strcpy (dum->gadget.dev.bus_id, "gadget"); 913d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.dev.parent = dev; 914d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.dev.release = dummy_gadget_release; 915d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern rc = device_register (&dum->gadget.dev); 916d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (rc < 0) 917d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 918d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 919d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern#if 0 /* usb_bus_get isn't EXPORTed! */ 920d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern usb_bus_get (&dummy_to_hcd (dum)->self); 921d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern#endif 922d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 923d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_set_drvdata (dev, dum); 924d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_create_file (&dum->gadget.dev, &dev_attr_function); 925d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 926d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 927d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 928d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic int dummy_udc_remove (struct device *dev) 929d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 930d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern struct dummy *dum = dev_get_drvdata (dev); 931d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 932d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_set_drvdata (dev, NULL); 933d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_remove_file (&dum->gadget.dev, &dev_attr_function); 934d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_unregister (&dum->gadget.dev); 935d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 936d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 937d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 938391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_udc_suspend (struct device *dev, pm_message_t state, 939391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern u32 level) 940391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 941391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum = dev_get_drvdata(dev); 942391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 943391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (level != SUSPEND_DISABLE) 944391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 945391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 946391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev_dbg (dev, "%s\n", __FUNCTION__); 947391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irq (&dum->lock); 948391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->udc_suspended = 1; 949391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern set_link_state (dum); 950391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irq (&dum->lock); 951391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 952391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev->power.power_state = state; 953391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 954391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 955391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 956391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 957391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_udc_resume (struct device *dev, u32 level) 958391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 959391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum = dev_get_drvdata(dev); 960391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 961391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (level != RESUME_ENABLE) 962391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 963391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 964391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev_dbg (dev, "%s\n", __FUNCTION__); 965391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irq (&dum->lock); 966391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->udc_suspended = 0; 967391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern set_link_state (dum); 968391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irq (&dum->lock); 969391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 970391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev->power.power_state = PMSG_ON; 971391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 972391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 973391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 974391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 975d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic struct device_driver dummy_udc_driver = { 976d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .name = (char *) gadget_name, 977d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .bus = &platform_bus_type, 978d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_udc_probe, 979d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_udc_remove, 980391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_udc_suspend, 981391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_udc_resume, 982d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 983d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* MASTER/HOST SIDE DRIVER 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this uses the hcd framework to hook up to host side drivers. 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * its root hub will only have one device, otherwise it acts like 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a normal host controller. 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * when urbs are queued, they're just stuck on a list that we 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scan in a timer callback. that callback connects writes from 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the host with reads from the device, and so on, based on the 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * usb 2.0 rules. 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_urb_enqueue ( 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_host_endpoint *ep, 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb, 10025db539e49fc7471e23bf3c94ca304f008cb7b7f3Olav Kongas unsigned mem_flags 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!urb->transfer_buffer && urb->transfer_buffer_length) 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp = kmalloc (sizeof *urbp, mem_flags); 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!urbp) 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp->urb = urb; 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->udev) { 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->udev = urb->dev; 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_get_dev (dum->udev); 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (unlikely (dum->udev != urb->dev)) 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_err (dummy_dev(dum), "usb_device address has changed!\n"); 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_add_tail (&urbp->urbp_list, &dum->urbp_list); 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->hcpriv = urbp; 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipetype (urb->pipe) == PIPE_CONTROL) 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 1; /* mark as a new urb */ 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* kick the scheduler, it'll do the rest */ 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!timer_pending (&dum->timer)) 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mod_timer (&dum->timer, jiffies + 1); 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_urb_dequeue (struct usb_hcd *hcd, struct urb *urb) 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1040391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum; 1041391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern unsigned long flags; 1042391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1043391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* giveback happens automatically in timer callback, 1044391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern * so make sure the callback happens */ 1045391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum = hcd_to_dummy (hcd); 1046391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irqsave (&dum->lock, flags); 1047391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (dum->rh_state != DUMMY_RH_RUNNING && !list_empty(&dum->urbp_list)) 1048391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern mod_timer (&dum->timer, jiffies); 1049391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irqrestore (&dum->lock, flags); 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void maybe_set_status (struct urb *urb, int status) 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&urb->lock); 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->status == -EINPROGRESS) 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->status = status; 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&urb->lock); 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* transfer up to a frame's worth; caller must own lock */ 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstransfer (struct dummy *dum, struct urb *urb, struct dummy_ep *ep, int limit) 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstop: 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if there's no request queued, the device is NAKing; return */ 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned host_len, dev_len, len; 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int is_short, to_host; 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rescan = 0; 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1..N packets of ep->ep.maxpacket each ... the last one 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * may be short (including zero length). 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * writer can send a zlp explicitly (length 0) or implicitly 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (length mod maxpacket zero, and 'zero' flag); they always 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * terminate reads. 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host_len = urb->transfer_buffer_length - urb->actual_length; 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_len = req->req.length - req->req.actual; 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (host_len, dev_len); 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME update emulated data toggle too */ 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to_host = usb_pipein (urb->pipe); 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely (len == 0)) 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = 1; 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *ubuf, *rbuf; 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* not enough bandwidth left? */ 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (limit < ep->ep.maxpacket && limit < len) 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (len, (unsigned) limit); 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len == 0) 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* use an extra pass for the final short packet */ 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len > ep->ep.maxpacket) { 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len -= (len % ep->ep.maxpacket); 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = (len % ep->ep.maxpacket) != 0; 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* else transfer packet(s) */ 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ubuf = urb->transfer_buffer + urb->actual_length; 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rbuf = req->req.buf + req->req.actual; 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (to_host) 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy (ubuf, rbuf, len); 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy (rbuf, ubuf, len); 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit -= len; 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length += len; 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.actual += len; 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* short packets terminate, maybe with overflow/underflow. 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it's only really an error to write too much. 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * partially filling a buffer optionally blocks queue advances 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (so completion handlers can clean up the queue) but we don't 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * need to emulate such data-in-flight. so we only show part 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of the URB_SHORT_NOT_OK effect: completion status. 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (is_short) { 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len == dev_len) { 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (to_host) { 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dev_len > host_len) 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EOVERFLOW); 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (urb->transfer_flags 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds & URB_SHORT_NOT_OK) 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? -EREMOTEIO : 0); 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!to_host) { 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len > dev_len) 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* many requests terminate without a short packet */ 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.length == req->req.actual 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !req->req.zero) 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->transfer_buffer_length == urb->actual_length 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !(urb->transfer_flags 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds & URB_ZERO_PACKET)) { 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* device side completion --> continuable */ 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.status != -EINPROGRESS) { 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* requests might have been unlinked... */ 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* host side completion --> terminate */ 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->status != -EINPROGRESS) 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* rescan to continue with any other queued i/o */ 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rescan) 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto top; 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit = ep->ep.maxpacket; 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dum->gadget.speed == USB_SPEED_HIGH) { 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tmp; 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* high bandwidth mode */ 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp = le16_to_cpu(ep->desc->wMaxPacketSize); 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp = (tmp >> 11) & 0x03; 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp *= 8 /* applies to entire frame */; 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit += limit * tmp; 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define is_active(dum) ((dum->port_status & \ 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_PORT_STAT_SUSPEND)) \ 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!is_active (dum)) 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((address & ~USB_DIR_IN) == 0) 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &dum->ep [0]; 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 1; i < DUMMY_ENDPOINTS; i++) { 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = &dum->ep [i]; 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep->desc) 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc->bEndpointAddress == address) 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ep; 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_active 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_InRequest (Dev_Request | USB_DIR_IN) 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_InRequest (Intf_Request | USB_DIR_IN) 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_InRequest (Ep_Request | USB_DIR_IN) 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* drive both sides of the transfers; looks like irq handlers to 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * both drivers except the callbacks aren't in_irq(). 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dummy_timer (unsigned long _dum) 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = (struct dummy *) _dum; 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp, *tmp; 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit, total; 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* simplistic model for one frame's bandwidth */ 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 8/*bytes*/ * 12/*packets*/; 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 64/*bytes*/ * 19/*packets*/; 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_err (dummy_dev(dum), "bogus device speed\n"); 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME if HZ != 1000 this will probably misbehave ... */ 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* look at each urb queued by the host side driver */ 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->udev) { 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_err (dummy_dev(dum), 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "timer fired with no URBs pending?\n"); 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DUMMY_ENDPOINTS; i++) { 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep_name [i]) 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->ep [i].already_seen = 0; 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsrestart: 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry_safe (urbp, tmp, &dum->urbp_list, urbp_list) { 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb; 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 address; 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = NULL; 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int type; 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb = urbp->urb; 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->status != -EINPROGRESS) { 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* likely it was just unlinked */ 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 1291391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern } else if (dum->rh_state != DUMMY_RH_RUNNING) 1292391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern continue; 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = usb_pipetype (urb->pipe); 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* used up this frame's non-periodic bandwidth? 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME there's infinite bandwidth for control and 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * periodic transfers ... unrealistic. 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (total <= 0 && type == PIPE_BULK) 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* find the gadget's ep for this request (if configured) */ 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address = usb_pipeendpoint (urb->pipe); 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipein (urb->pipe)) 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address |= USB_DIR_IN; 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = find_endpoint(dum, address); 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep) { 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set_configuration() disagreement */ 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_dbg (dummy_dev(dum), 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "no ep configured for urb %p\n", 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb); 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EPROTO); 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->already_seen) 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 1; 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && urb->error_count) { 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 1; /* a new urb */ 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 0; 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->halted && !ep->setup_stage) { 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: must not be iso! */ 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_dbg (dummy_dev(dum), "ep %s halted, urb %p\n", 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.name, urb); 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EPIPE); 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME make sure both ends agree on maxpacket */ 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle control requests */ 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && ep->setup_stage) { 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ctrlrequest setup; 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int value = 1; 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep2; 1337cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern unsigned w_index; 1338cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern unsigned w_value; 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds setup = *(struct usb_ctrlrequest*) urb->setup_packet; 1341cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern w_index = le16_to_cpu(setup.wIndex); 1342cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern w_value = le16_to_cpu(setup.wValue); 1343cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern if (le16_to_cpu(setup.wLength) != 1344cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern urb->transfer_buffer_length) { 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EOVERFLOW); 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* paranoia, in case of stale queued data */ 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 1353d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "stale req = %p\n", 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req); 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 0; 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver never sees set_address or operations 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * on standard feature flags. some hardware doesn't 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * even expose them. 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 0; 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 0; 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (setup.bRequest) { 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_REQ_SET_ADDRESS: 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType != Dev_Request) 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1374cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern dum->address = w_value; 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 1376d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "set_address = %d\n", 1377cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern w_value); 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_REQ_SET_FEATURE: 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType == Dev_Request) { 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 1383cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern switch (w_value) { 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_DEVICE_REMOTE_WAKEUP: 13851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13865742b0c95026c817d9c266174ca39a909e8d38caAlan Stern case USB_DEVICE_B_HNP_ENABLE: 13875742b0c95026c817d9c266174ca39a909e8d38caAlan Stern dum->gadget.b_hnp_enable = 1; 13885742b0c95026c817d9c266174ca39a909e8d38caAlan Stern break; 13895742b0c95026c817d9c266174ca39a909e8d38caAlan Stern case USB_DEVICE_A_HNP_SUPPORT: 13905742b0c95026c817d9c266174ca39a909e8d38caAlan Stern dum->gadget.a_hnp_support = 1; 13915742b0c95026c817d9c266174ca39a909e8d38caAlan Stern break; 13925742b0c95026c817d9c266174ca39a909e8d38caAlan Stern case USB_DEVICE_A_ALT_HNP_SUPPORT: 13935742b0c95026c817d9c266174ca39a909e8d38caAlan Stern dum->gadget.a_alt_hnp_support 13945742b0c95026c817d9c266174ca39a909e8d38caAlan Stern = 1; 13955742b0c95026c817d9c266174ca39a909e8d38caAlan Stern break; 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value == 0) { 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus |= 1401cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern (1 << w_value); 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (setup.bRequestType == Ep_Request) { 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // endpoint halt 1407cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ep2 = find_endpoint (dum, w_index); 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep2) { 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep2->halted = 1; 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_REQ_CLEAR_FEATURE: 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType == Dev_Request) { 1419cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern switch (w_value) { 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_DEVICE_REMOTE_WAKEUP: 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus &= ~(1 << 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_DEVICE_REMOTE_WAKEUP); 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (setup.bRequestType == Ep_Request) { 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // endpoint halt 1432cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ep2 = find_endpoint (dum, w_index); 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep2) { 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep2->halted = 0; 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_REQ_GET_STATUS: 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType == Dev_InRequest 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || setup.bRequestType 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == Intf_InRequest 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || setup.bRequestType 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == Ep_InRequest 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ) { 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf; 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // device: remote wakeup, selfpowered 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // interface: nothing 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // endpoint: halt 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = (char *)urb->transfer_buffer; 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->transfer_buffer_length > 0) { 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType == 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds Ep_InRequest) { 1458cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ep2 = find_endpoint (dum, w_index); 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep2) { 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf [0] = ep2->halted; 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (setup.bRequestType == 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds Dev_InRequest) { 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf [0] = (u8) 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus; 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf [0] = 0; 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->transfer_buffer_length > 1) 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf [1] = 0; 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length = min (2, 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->transfer_buffer_length); 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver handles all other requests. block 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * until setup() returns; no reentrancy issues etc. 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value > 0) { 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = dum->driver->setup (&dum->gadget, 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &setup); 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value >= 0) { 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no delays (max 64KB data stage) */ 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = 64*1024; 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto treat_control_like_bulk; 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* error, see below */ 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value < 0) { 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value != -EOPNOTSUPP) 1500d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "setup --> %d\n", 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value); 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EPIPE); 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length = 0; 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* non-control requests */ 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = total; 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_ISOCHRONOUS: 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * use urb->iso_frame_desc[i]. 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete whether or not ep has requests queued. 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * report random errors, to debug drivers. 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -ENOSYS); 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_INTERRUPT: 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this almost certainly polls too fast. 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FALLTHROUGH */ 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // case PIPE_BULK: case PIPE_CONTROL: 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds treat_control_like_bulk: 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = transfer (dum, urb, ep, limit); 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* incomplete transfer? */ 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->status == -EINPROGRESS) 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsreturn_urb: 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->hcpriv = NULL; 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del (&urbp->urbp_list); 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (urbp); 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep) 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = ep->setup_stage = 0; 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_hcd_giveback_urb (dummy_to_hcd(dum), urb, NULL); 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1556391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (list_empty (&dum->urbp_list)) { 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_put_dev (dum->udev); 15581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->udev = NULL; 1559391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern } else if (dum->rh_state == DUMMY_RH_RUNNING) { 1560391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* want a 1 msec delay here */ 1561391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern mod_timer (&dum->timer, jiffies + msecs_to_jiffies(1)); 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PORT_C_MASK \ 1570c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern ((USB_PORT_STAT_C_CONNECTION \ 1571c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_ENABLE \ 1572c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_SUSPEND \ 1573c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_OVERCURRENT \ 1574c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_RESET) << 16) 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_status (struct usb_hcd *hcd, char *buf) 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1580391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern int retval = 0; 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 1585391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (hcd->state != HC_STATE_RUNNING) 1586391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern goto done; 1587f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1588f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->resuming && time_after_eq (jiffies, dum->re_timeout)) { 1589f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 1590f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status &= ~USB_PORT_STAT_SUSPEND; 1591f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1592f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 1593f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1594391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if ((dum->port_status & PORT_C_MASK) != 0) { 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *buf = (1 << 1); 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_dbg (dummy_dev(dum), "port status 0x%08x has changes\n", 1597391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->port_status); 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 1; 1599391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (dum->rh_state == DUMMY_RH_SUSPENDED) 1600391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_resume_root_hub (hcd); 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1602391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sterndone: 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldshub_descriptor (struct usb_hub_descriptor *desc) 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset (desc, 0, sizeof *desc); 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescriptorType = 0x29; 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescLength = 9; 1613cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern desc->wHubCharacteristics = (__force __u16) 1614cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern (__constant_cpu_to_le16 (0x0001)); 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bNbrPorts = 1; 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bitmap [0] = 0xff; 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bitmap [1] = 0xff; 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_control ( 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 typeReq, 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wValue, 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wIndex, 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf, 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wLength 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = 0; 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1632391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (hcd->state != HC_STATE_RUNNING) 1633391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ETIMEDOUT; 1634391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (typeReq) { 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearHubFeature: 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearPortFeature: 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 1643c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern if (dum->port_status & USB_PORT_STAT_SUSPEND) { 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 20msec resume signaling */ 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->resuming = 1; 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->re_timeout = jiffies + 1647f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern msecs_to_jiffies(20); 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_POWER: 1651f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->port_status & USB_PORT_STAT_POWER) 1652f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dev_dbg (dummy_dev(dum), "power-off\n"); 1653f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->port_status &= ~(1 << wValue); 1656f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubDescriptor: 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hub_descriptor ((struct usb_hub_descriptor *) buf); 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubStatus: 1663cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern *(__le32 *) buf = __constant_cpu_to_le32 (0); 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetPortStatus: 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (wIndex != 1) 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* whoever resets or resumes must GetPortStatus to 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete it!! 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1672f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->resuming && 1673f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern time_after_eq (jiffies, dum->re_timeout)) { 1674c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 1675c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status &= ~USB_PORT_STAT_SUSPEND; 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1677f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->port_status & USB_PORT_STAT_RESET) != 0 && 1678f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern time_after_eq (jiffies, dum->re_timeout)) { 1679c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status |= (USB_PORT_STAT_C_RESET << 16); 1680c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status &= ~USB_PORT_STAT_RESET; 1681f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->pullup) { 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->port_status |= USB_PORT_STAT_ENABLE; 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* give it the best speed we agree on */ 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.speed = dum->driver->speed; 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.ep0->maxpacket = 64; 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->port_status |= 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_PORT_STAT_HIGH_SPEED; 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.ep0->maxpacket = 8; 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->port_status |= 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_PORT_STAT_LOW_SPEED; 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.speed = USB_SPEED_FULL; 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1702f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1703cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ((__le16 *) buf)[0] = cpu_to_le16 (dum->port_status); 1704cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ((__le16 *) buf)[1] = cpu_to_le16 (dum->port_status >> 16); 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetHubFeature: 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetPortFeature: 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 1712f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->active) { 1713c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status |= USB_PORT_STAT_SUSPEND; 1714f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1715f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* HNP would happen here; for now we 1716f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern * assume b_bus_req is always true. 1717f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern */ 1718f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1719f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (((1 << USB_DEVICE_B_HNP_ENABLE) 1720f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern & dum->devstatus) != 0) 1721f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dev_dbg (dummy_dev(dum), 17225742b0c95026c817d9c266174ca39a909e8d38caAlan Stern "no HNP yet!\n"); 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1725f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern case USB_PORT_FEAT_POWER: 1726f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status |= USB_PORT_STAT_POWER; 1727f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1728f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern break; 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_RESET: 1730f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* if it's already enabled, disable */ 1731f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status &= ~(USB_PORT_STAT_ENABLE 1732f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_LOW_SPEED 1733f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_HIGH_SPEED); 1734391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->devstatus = 0; 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 50msec reset signaling */ 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->re_timeout = jiffies + msecs_to_jiffies(50); 1737f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1739f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->port_status & USB_PORT_STAT_POWER) != 0) { 1740f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status |= (1 << wValue); 1741f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1742f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_dbg (dummy_dev(dum), 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "hub control req%04x v%04x i%04x l%d\n", 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds typeReq, wValue, wIndex, wLength); 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* "protocol stall" on error */ 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 1755685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern 1756685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern if ((dum->port_status & PORT_C_MASK) != 0) 1757685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (hcd); 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1761391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_hub_suspend (struct usb_hcd *hcd) 1762391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1763391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum = hcd_to_dummy (hcd); 1764391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1765391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irq (&dum->lock); 1766391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->rh_state = DUMMY_RH_SUSPENDED; 1767391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern set_link_state (dum); 1768391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irq (&dum->lock); 1769391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1770391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1771391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1772391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_hub_resume (struct usb_hcd *hcd) 1773391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1774391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum = hcd_to_dummy (hcd); 1775391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1776391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irq (&dum->lock); 1777391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->rh_state = DUMMY_RH_RUNNING; 1778391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern set_link_state (dum); 1779391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (!list_empty(&dum->urbp_list)) 1780391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern mod_timer (&dum->timer, jiffies); 1781391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irq (&dum->lock); 1782391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1783391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline ssize_t 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsshow_urb (char *buf, size_t size, struct urb *urb) 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ep = usb_pipeendpoint (urb->pipe); 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return snprintf (buf, size, 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "urb/%p %s ep%d%s%s len %d/%d\n", 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb, 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (urb->dev->speed) { 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: s = "ls"; break; 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: s = "fs"; break; 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: s = "hs"; break; 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: s = "?"; break; 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s; }), 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; \ 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { \ 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_CONTROL: s = ""; break; \ 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_BULK: s = "-bulk"; break; \ 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_INTERRUPT: s = "-int"; break; \ 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: s = "-iso"; break; \ 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s;}), 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length, urb->transfer_buffer_length); 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 181410523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_urbs (struct device *dev, struct device_attribute *attr, char *buf) 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd = dev_get_drvdata (dev); 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = hcd_to_dummy (hcd); 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t size = 0; 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (urbp, &dum->urbp_list, urbp_list) { 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t temp; 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += temp; 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size += temp; 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return size; 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_start (struct usb_hcd *hcd) 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MASTER side init ... we emulate a root hub that'll only ever 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * talk to one device (the slave side). Also appears in sysfs, 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * just like more familiar pci-based HCDs. 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init (&dum->lock); 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_timer (&dum->timer); 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->timer.function = dummy_timer; 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->timer.data = (unsigned long) dum; 1851391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->rh_state = DUMMY_RH_RUNNING; 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&dum->urbp_list); 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1855bc96c0ad1ed0c938fefc0423aa99f086c5a2a1eaAlan Stern /* only show a low-power port: just 8mA */ 1856bc96c0ad1ed0c938fefc0423aa99f086c5a2a1eaAlan Stern hcd->power_budget = 8; 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hcd->state = HC_STATE_RUNNING; 1858685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern hcd->uses_new_polling = 1; 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18605742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#ifdef CONFIG_USB_OTG 18615742b0c95026c817d9c266174ca39a909e8d38caAlan Stern hcd->self.otg_port = 1; 18625742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#endif 18635742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds device_create_file (dummy_dev(dum), &dev_attr_urbs); 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dummy_stop (struct usb_hcd *hcd) 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds device_remove_file (dummy_dev(dum), &dev_attr_urbs); 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_gadget_unregister_driver (dum->driver); 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_info (dummy_dev(dum), "stopped\n"); 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_h_get_frame (struct usb_hcd *hcd) 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dummy_g_get_frame (NULL); 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct hc_driver dummy_hcd = { 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .description = (char *) driver_name, 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .product_desc = "Dummy host controller", 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hcd_priv_size = sizeof(struct dummy), 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flags = HCD_USB2, 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = dummy_start, 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = dummy_stop, 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_enqueue = dummy_urb_enqueue, 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_dequeue = dummy_urb_dequeue, 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame_number = dummy_h_get_frame, 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_status_data = dummy_hub_status, 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_control = dummy_hub_control, 1904391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .hub_suspend = dummy_hub_suspend, 1905391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .hub_resume = dummy_hub_resume, 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1908d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic int dummy_hcd_probe (struct device *dev) 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd; 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_info (dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hcd = usb_create_hcd (&dummy_hcd, dev, dev->bus_id); 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!hcd) 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the_controller = hcd_to_dummy (hcd); 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_add_hcd(hcd, 0, 0); 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval != 0) { 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_put_hcd (hcd); 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the_controller = NULL; 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1928d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic int dummy_hcd_remove (struct device *dev) 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd; 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hcd = dev_get_drvdata (dev); 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_remove_hcd (hcd); 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_put_hcd (hcd); 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the_controller = NULL; 1936d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1939391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_hcd_suspend (struct device *dev, pm_message_t state, 1940391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern u32 level) 1941391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1942391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 1943391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1944391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (level != SUSPEND_DISABLE) 1945391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1946391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1947391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev_dbg (dev, "%s\n", __FUNCTION__); 1948391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern hcd = dev_get_drvdata (dev); 1949391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1950391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#ifndef CONFIG_USB_SUSPEND 1951391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* Otherwise this would never happen */ 1952391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_lock_device (hcd->self.root_hub); 1953391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dummy_hub_suspend (hcd); 1954391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_unlock_device (hcd->self.root_hub); 1955391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#endif 1956391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1957391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern hcd->state = HC_STATE_SUSPENDED; 1958391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1959391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1960391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1961391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_hcd_resume (struct device *dev, u32 level) 1962391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1963391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 1964391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1965391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (level != RESUME_ENABLE) 1966391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1967391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1968391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev_dbg (dev, "%s\n", __FUNCTION__); 1969391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern hcd = dev_get_drvdata (dev); 1970391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern hcd->state = HC_STATE_RUNNING; 1971391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1972391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#ifndef CONFIG_USB_SUSPEND 1973391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* Otherwise this would never happen */ 1974391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_lock_device (hcd->self.root_hub); 1975391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dummy_hub_resume (hcd); 1976391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_unlock_device (hcd->self.root_hub); 1977391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#endif 1978391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1979391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_poll_rh_status (hcd); 1980391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1981391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1982391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1983d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic struct device_driver dummy_hcd_driver = { 1984d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .name = (char *) driver_name, 1985d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .bus = &platform_bus_type, 1986d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_hcd_probe, 1987d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_hcd_remove, 1988391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_hcd_suspend, 1989391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_hcd_resume, 1990d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 19911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1992d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/*-------------------------------------------------------------------------*/ 19931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1994d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/* These don't need to do anything because the pdev structures are 1995d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern * statically allocated. */ 1996d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic void 1997d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sterndummy_udc_release (struct device *dev) {} 19981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1999d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic void 2000d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sterndummy_hcd_release (struct device *dev) {} 2001d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2002d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic struct platform_device the_udc_pdev = { 2003d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .name = (char *) gadget_name, 2004d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .id = -1, 2005d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .dev = { 2006d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .release = dummy_udc_release, 2007d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern }, 2008d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 20091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2010d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic struct platform_device the_hcd_pdev = { 2011d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .name = (char *) driver_name, 2012d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .id = -1, 2013d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .dev = { 2014d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .release = dummy_hcd_release, 2015d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern }, 2016d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init (void) 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_disabled ()) 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2024d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2025d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern retval = driver_register (&dummy_hcd_driver); 2026d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 2028d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2029d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern retval = driver_register (&dummy_udc_driver); 2030d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2031d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern goto err_register_udc_driver; 2032d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2033d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern retval = platform_device_register (&the_hcd_pdev); 2034d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2035d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern goto err_register_hcd; 2036d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2037d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern retval = platform_device_register (&the_udc_pdev); 2038d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2039d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern goto err_register_udc; 2040d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return retval; 2041d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2042d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternerr_register_udc: 2043d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern platform_device_unregister (&the_hcd_pdev); 2044d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternerr_register_hcd: 2045d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern driver_unregister (&dummy_udc_driver); 2046d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternerr_register_udc_driver: 2047d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern driver_unregister (&dummy_hcd_driver); 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init (init); 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit cleanup (void) 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2054d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern platform_device_unregister (&the_udc_pdev); 2055d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern platform_device_unregister (&the_hcd_pdev); 2056d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern driver_unregister (&dummy_udc_driver); 2057d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern driver_unregister (&dummy_hcd_driver); 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit (cleanup); 2060