dummy_hcd.c revision 391eca9d8892a940ff8dbfee2ca78942e05c2d37
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 * 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_alloc_request (struct usb_ep *_ep, int 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, 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int 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 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_queue (struct usb_ep *_ep, struct usb_request *_req, int mem_flags) 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = usb_request_to_dummy_request (_req); 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_req || !list_empty (&req->queue) || !_req->complete) 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || (!ep->desc && _ep->name != ep0name)) 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver || !is_enabled (dum)) 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 563d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, _req, _ep->name, _req->length, _req->buf); 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -EINPROGRESS; 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = 0; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* implement an emulated single-request FIFO */ 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&dum->fifo_req.queue) && 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&ep->queue) && 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->length <= FIFO_SIZE) { 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = &dum->fifo_req; 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req = *_req; 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.buf = dum->fifo_buf; 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy (dum->fifo_buf, _req->buf, _req->length); 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.context = dum; 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete = fifo_complete; 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = _req->length; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = 0; 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_add_tail (&req->queue, &ep->queue); 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware would likely enable transfers here, in case 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it'd been left NAKing. 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = -EINVAL; 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req = NULL; 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !_req) 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (&req->req == _req) { 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -ECONNRESET; 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval == 0) { 626d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "dequeued req %p from %s, len %d buf %p\n", 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req, _ep->name, _req->length, _req->buf); 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_set_halt (struct usb_ep *_ep, int value) 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep) 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!value) 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 0; 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !list_empty (&ep->queue)) 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EAGAIN; 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 1; 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME clear emulated data toggle too */ 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_ep_ops dummy_ep_ops = { 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .enable = dummy_enable, 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disable = dummy_disable, 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .alloc_request = dummy_alloc_request, 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .free_request = dummy_free_request, 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .alloc_buffer = dummy_alloc_buffer, 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .free_buffer = dummy_free_buffer, 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* map, unmap, ... eventually hook the "generic" dma calls */ 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .queue = dummy_queue, 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .dequeue = dummy_dequeue, 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_halt = dummy_set_halt, 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* there are both host and device side versions of this call ... */ 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_g_get_frame (struct usb_gadget *_gadget) 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timeval tv; 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_gettimeofday (&tv); 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tv.tv_usec / 1000; 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_wakeup (struct usb_gadget *_gadget) 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = gadget_to_dummy (_gadget); 690391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (!(dum->devstatus & ( (1 << USB_DEVICE_B_HNP_ENABLE) 6915742b0c95026c817d9c266174ca39a909e8d38caAlan Stern | (1 << USB_DEVICE_REMOTE_WAKEUP)))) 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 693391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if ((dum->port_status & USB_PORT_STAT_CONNECTION) == 0) 694391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ENOLINK; 695391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if ((dum->port_status & USB_PORT_STAT_SUSPEND) == 0 && 696391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->rh_state != DUMMY_RH_SUSPENDED) 697391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -EIO; 698391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 699391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* FIXME: What if the root hub is suspended but the port isn't? */ 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* hub notices our request, issues downstream resume, etc */ 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->resuming = 1; 703f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->re_timeout = jiffies + msecs_to_jiffies(20); 704685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern mod_timer (&dummy_to_hcd (dum)->rh_timer, dum->re_timeout); 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = gadget_to_dummy (_gadget); 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value) 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 720f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic int dummy_pullup (struct usb_gadget *_gadget, int value) 721f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 722f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy *dum; 723f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned long flags; 724f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 725f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum = gadget_to_dummy (_gadget); 726f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock_irqsave (&dum->lock, flags); 727f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = (value != 0); 728f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 729f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock_irqrestore (&dum->lock, flags); 730685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern 731685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 732f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern return 0; 733f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 734f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_gadget_ops dummy_ops = { 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame = dummy_g_get_frame, 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .wakeup = dummy_wakeup, 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_selfpowered = dummy_set_selfpowered, 739f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern .pullup = dummy_pullup, 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* "function" sysfs attribute */ 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 74610523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_function (struct device *dev, struct device_attribute *attr, char *buf) 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = gadget_dev_to_dummy (dev); 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver || !dum->driver->function) 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 754cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Sternstatic DEVICE_ATTR (function, S_IRUGO, show_function, NULL); 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver registration/unregistration. 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is basically hardware-specific; there's usually only one real USB 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * device (not host) controller since that's how USB devices are intended 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to work. So most implementations of these api calls will rely on the 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fact that only one driver will ever bind to the hardware. But curious 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hardware can be built with discrete components, so the gadget API doesn't 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * require that assumption. 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * For this emulator, it might be convenient to create a usb slave device 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for each driver that registers: just add to a big root hub. 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsusb_gadget_register_driver (struct usb_gadget_driver *driver) 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = the_controller; 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval, i; 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum) 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dum->driver) 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!driver->bind || !driver->unbind || !driver->setup 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || driver->speed == USB_SPEED_UNKNOWN) 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SLAVE side init ... the layer above hardware, which 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can't enumerate without help from the driver we're binding. 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7905742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus = 0; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&dum->gadget.ep_list); 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DUMMY_ENDPOINTS; i++) { 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = &dum->ep [i]; 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep_name [i]) 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.name = ep_name [i]; 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.ops = &dummy_ep_ops; 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_add_tail (&ep->ep.ep_list, &dum->gadget.ep_list); 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = ep->already_seen = ep->setup_stage = 0; 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.maxpacket = ~0; 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->gadget = &dum->gadget; 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = NULL; 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&ep->queue); 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.ep0 = &dum->ep [0].ep; 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->ep [0].ep.maxpacket = 64; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&dum->ep [0].ep.ep_list); 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD(&dum->fifo_req.queue); 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = driver; 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.dev.driver = &driver->driver; 817d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((retval = driver->bind (&dum->gadget)) != 0) { 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = NULL; 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.dev.driver = NULL; 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.bus = dum->gadget.dev.parent->bus; 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver_register (&driver->driver); 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds device_bind_driver (&dum->gadget.dev); 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* khubd will enumerate this in a while */ 830f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock_irq (&dum->lock); 831f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = 1; 832f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 833f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock_irq (&dum->lock); 834685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern 835685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL (usb_gadget_register_driver); 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsusb_gadget_unregister_driver (struct usb_gadget_driver *driver) 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = the_controller; 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum) 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!driver || driver != dum->driver) 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 851d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 855f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = 0; 856f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->unbind (&dum->gadget); 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = NULL; 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds device_release_driver (&dum->gadget.dev); 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver_unregister (&driver->driver); 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 865f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock_irqsave (&dum->lock, flags); 866f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = 0; 867f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 868f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock_irqrestore (&dum->lock, flags); 869f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 870685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL (usb_gadget_unregister_driver); 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_enabled 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 877cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern/* just declare this in any driver that really need it */ 878cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Sternextern int net2280_set_fifo_mode (struct usb_gadget *gadget, int mode); 879cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint net2280_set_fifo_mode (struct usb_gadget *gadget, int mode) 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOSYS; 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL (net2280_set_fifo_mode); 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 886d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 887d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/* The gadget structure is stored inside the hcd structure and will be 888d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern * released along with it. */ 889d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic void 890d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sterndummy_gadget_release (struct device *dev) 891d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 892d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern#if 0 /* usb_bus_put isn't EXPORTed! */ 893d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern struct dummy *dum = gadget_dev_to_dummy (dev); 894d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 895d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern usb_bus_put (&dummy_to_hcd (dum)->self); 896d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern#endif 897d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 898d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 899d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic int dummy_udc_probe (struct device *dev) 900d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 901d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern struct dummy *dum = the_controller; 902d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern int rc; 903d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 904d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.name = gadget_name; 905d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.ops = &dummy_ops; 906d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.is_dualspeed = 1; 907d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 908d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern /* maybe claim OTG support, though we won't complete HNP */ 909d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.is_otg = (dummy_to_hcd(dum)->self.otg_port != 0); 910d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 911d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern strcpy (dum->gadget.dev.bus_id, "gadget"); 912d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.dev.parent = dev; 913d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.dev.release = dummy_gadget_release; 914d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern rc = device_register (&dum->gadget.dev); 915d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (rc < 0) 916d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 917d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 918d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern#if 0 /* usb_bus_get isn't EXPORTed! */ 919d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern usb_bus_get (&dummy_to_hcd (dum)->self); 920d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern#endif 921d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 922d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_set_drvdata (dev, dum); 923d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_create_file (&dum->gadget.dev, &dev_attr_function); 924d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 925d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 926d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 927d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic int dummy_udc_remove (struct device *dev) 928d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 929d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern struct dummy *dum = dev_get_drvdata (dev); 930d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 931d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_set_drvdata (dev, NULL); 932d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_remove_file (&dum->gadget.dev, &dev_attr_function); 933d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_unregister (&dum->gadget.dev); 934d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 935d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 936d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 937391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_udc_suspend (struct device *dev, pm_message_t state, 938391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern u32 level) 939391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 940391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum = dev_get_drvdata(dev); 941391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 942391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (level != SUSPEND_DISABLE) 943391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 944391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 945391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev_dbg (dev, "%s\n", __FUNCTION__); 946391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irq (&dum->lock); 947391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->udc_suspended = 1; 948391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern set_link_state (dum); 949391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irq (&dum->lock); 950391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 951391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev->power.power_state = state; 952391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 953391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 954391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 955391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 956391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_udc_resume (struct device *dev, u32 level) 957391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 958391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum = dev_get_drvdata(dev); 959391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 960391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (level != RESUME_ENABLE) 961391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 962391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 963391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev_dbg (dev, "%s\n", __FUNCTION__); 964391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irq (&dum->lock); 965391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->udc_suspended = 0; 966391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern set_link_state (dum); 967391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irq (&dum->lock); 968391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 969391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev->power.power_state = PMSG_ON; 970391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_poll_rh_status (dummy_to_hcd (dum)); 971391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 972391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 973391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 974d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic struct device_driver dummy_udc_driver = { 975d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .name = (char *) gadget_name, 976d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .bus = &platform_bus_type, 977d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_udc_probe, 978d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_udc_remove, 979391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_udc_suspend, 980391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_udc_resume, 981d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 982d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* MASTER/HOST SIDE DRIVER 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this uses the hcd framework to hook up to host side drivers. 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * its root hub will only have one device, otherwise it acts like 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a normal host controller. 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * when urbs are queued, they're just stuck on a list that we 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scan in a timer callback. that callback connects writes from 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the host with reads from the device, and so on, based on the 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * usb 2.0 rules. 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_urb_enqueue ( 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_host_endpoint *ep, 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb, 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int mem_flags 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!urb->transfer_buffer && urb->transfer_buffer_length) 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp = kmalloc (sizeof *urbp, mem_flags); 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!urbp) 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp->urb = urb; 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->udev) { 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->udev = urb->dev; 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_get_dev (dum->udev); 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (unlikely (dum->udev != urb->dev)) 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_err (dummy_dev(dum), "usb_device address has changed!\n"); 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_add_tail (&urbp->urbp_list, &dum->urbp_list); 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->hcpriv = urbp; 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipetype (urb->pipe) == PIPE_CONTROL) 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 1; /* mark as a new urb */ 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* kick the scheduler, it'll do the rest */ 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!timer_pending (&dum->timer)) 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mod_timer (&dum->timer, jiffies + 1); 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_urb_dequeue (struct usb_hcd *hcd, struct urb *urb) 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1039391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum; 1040391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern unsigned long flags; 1041391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1042391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* giveback happens automatically in timer callback, 1043391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern * so make sure the callback happens */ 1044391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum = hcd_to_dummy (hcd); 1045391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irqsave (&dum->lock, flags); 1046391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (dum->rh_state != DUMMY_RH_RUNNING && !list_empty(&dum->urbp_list)) 1047391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern mod_timer (&dum->timer, jiffies); 1048391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irqrestore (&dum->lock, flags); 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void maybe_set_status (struct urb *urb, int status) 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&urb->lock); 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->status == -EINPROGRESS) 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->status = status; 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&urb->lock); 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* transfer up to a frame's worth; caller must own lock */ 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstransfer (struct dummy *dum, struct urb *urb, struct dummy_ep *ep, int limit) 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstop: 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if there's no request queued, the device is NAKing; return */ 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned host_len, dev_len, len; 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int is_short, to_host; 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rescan = 0; 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1..N packets of ep->ep.maxpacket each ... the last one 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * may be short (including zero length). 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * writer can send a zlp explicitly (length 0) or implicitly 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (length mod maxpacket zero, and 'zero' flag); they always 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * terminate reads. 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host_len = urb->transfer_buffer_length - urb->actual_length; 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_len = req->req.length - req->req.actual; 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (host_len, dev_len); 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME update emulated data toggle too */ 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to_host = usb_pipein (urb->pipe); 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely (len == 0)) 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = 1; 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *ubuf, *rbuf; 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* not enough bandwidth left? */ 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (limit < ep->ep.maxpacket && limit < len) 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (len, (unsigned) limit); 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len == 0) 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* use an extra pass for the final short packet */ 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len > ep->ep.maxpacket) { 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len -= (len % ep->ep.maxpacket); 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = (len % ep->ep.maxpacket) != 0; 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* else transfer packet(s) */ 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ubuf = urb->transfer_buffer + urb->actual_length; 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rbuf = req->req.buf + req->req.actual; 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (to_host) 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy (ubuf, rbuf, len); 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy (rbuf, ubuf, len); 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit -= len; 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length += len; 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.actual += len; 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* short packets terminate, maybe with overflow/underflow. 11211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it's only really an error to write too much. 11221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * partially filling a buffer optionally blocks queue advances 11241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (so completion handlers can clean up the queue) but we don't 11251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * need to emulate such data-in-flight. so we only show part 11261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of the URB_SHORT_NOT_OK effect: completion status. 11271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (is_short) { 11291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len == dev_len) { 11301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 11311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (to_host) { 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dev_len > host_len) 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EOVERFLOW); 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (urb->transfer_flags 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds & URB_SHORT_NOT_OK) 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ? -EREMOTEIO : 0); 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!to_host) { 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len > dev_len) 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* many requests terminate without a short packet */ 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.length == req->req.actual 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !req->req.zero) 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->transfer_buffer_length == urb->actual_length 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !(urb->transfer_flags 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds & URB_ZERO_PACKET)) { 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* device side completion --> continuable */ 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.status != -EINPROGRESS) { 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* requests might have been unlinked... */ 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* host side completion --> terminate */ 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->status != -EINPROGRESS) 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* rescan to continue with any other queued i/o */ 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rescan) 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto top; 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit = ep->ep.maxpacket; 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dum->gadget.speed == USB_SPEED_HIGH) { 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tmp; 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* high bandwidth mode */ 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp = le16_to_cpu(ep->desc->wMaxPacketSize); 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp = (tmp >> 11) & 0x03; 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp *= 8 /* applies to entire frame */; 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit += limit * tmp; 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define is_active(dum) ((dum->port_status & \ 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_PORT_STAT_SUSPEND)) \ 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!is_active (dum)) 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((address & ~USB_DIR_IN) == 0) 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &dum->ep [0]; 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 1; i < DUMMY_ENDPOINTS; i++) { 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = &dum->ep [i]; 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep->desc) 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc->bEndpointAddress == address) 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ep; 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_active 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_InRequest (Dev_Request | USB_DIR_IN) 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_InRequest (Intf_Request | USB_DIR_IN) 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_InRequest (Ep_Request | USB_DIR_IN) 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* drive both sides of the transfers; looks like irq handlers to 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * both drivers except the callbacks aren't in_irq(). 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dummy_timer (unsigned long _dum) 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = (struct dummy *) _dum; 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp, *tmp; 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit, total; 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* simplistic model for one frame's bandwidth */ 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 8/*bytes*/ * 12/*packets*/; 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 64/*bytes*/ * 19/*packets*/; 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_err (dummy_dev(dum), "bogus device speed\n"); 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME if HZ != 1000 this will probably misbehave ... */ 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* look at each urb queued by the host side driver */ 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->udev) { 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_err (dummy_dev(dum), 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "timer fired with no URBs pending?\n"); 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DUMMY_ENDPOINTS; i++) { 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep_name [i]) 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->ep [i].already_seen = 0; 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsrestart: 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry_safe (urbp, tmp, &dum->urbp_list, urbp_list) { 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb; 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 address; 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = NULL; 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int type; 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb = urbp->urb; 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->status != -EINPROGRESS) { 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* likely it was just unlinked */ 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 1290391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern } else if (dum->rh_state != DUMMY_RH_RUNNING) 1291391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern continue; 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = usb_pipetype (urb->pipe); 12931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* used up this frame's non-periodic bandwidth? 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME there's infinite bandwidth for control and 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * periodic transfers ... unrealistic. 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (total <= 0 && type == PIPE_BULK) 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* find the gadget's ep for this request (if configured) */ 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address = usb_pipeendpoint (urb->pipe); 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipein (urb->pipe)) 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address |= USB_DIR_IN; 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = find_endpoint(dum, address); 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep) { 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set_configuration() disagreement */ 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_dbg (dummy_dev(dum), 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "no ep configured for urb %p\n", 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb); 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EPROTO); 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->already_seen) 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 1; 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && urb->error_count) { 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 1; /* a new urb */ 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 0; 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->halted && !ep->setup_stage) { 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: must not be iso! */ 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_dbg (dummy_dev(dum), "ep %s halted, urb %p\n", 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.name, urb); 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EPIPE); 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME make sure both ends agree on maxpacket */ 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle control requests */ 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && ep->setup_stage) { 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ctrlrequest setup; 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int value = 1; 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep2; 1336cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern unsigned w_index; 1337cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern unsigned w_value; 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds setup = *(struct usb_ctrlrequest*) urb->setup_packet; 1340cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern w_index = le16_to_cpu(setup.wIndex); 1341cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern w_value = le16_to_cpu(setup.wValue); 1342cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern if (le16_to_cpu(setup.wLength) != 1343cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern urb->transfer_buffer_length) { 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EOVERFLOW); 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* paranoia, in case of stale queued data */ 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 1352d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "stale req = %p\n", 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req); 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 0; 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 13601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver never sees set_address or operations 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * on standard feature flags. some hardware doesn't 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * even expose them. 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 0; 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 0; 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (setup.bRequest) { 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_REQ_SET_ADDRESS: 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType != Dev_Request) 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1373cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern dum->address = w_value; 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 1375d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "set_address = %d\n", 1376cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern w_value); 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_REQ_SET_FEATURE: 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType == Dev_Request) { 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 1382cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern switch (w_value) { 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_DEVICE_REMOTE_WAKEUP: 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13855742b0c95026c817d9c266174ca39a909e8d38caAlan Stern case USB_DEVICE_B_HNP_ENABLE: 13865742b0c95026c817d9c266174ca39a909e8d38caAlan Stern dum->gadget.b_hnp_enable = 1; 13875742b0c95026c817d9c266174ca39a909e8d38caAlan Stern break; 13885742b0c95026c817d9c266174ca39a909e8d38caAlan Stern case USB_DEVICE_A_HNP_SUPPORT: 13895742b0c95026c817d9c266174ca39a909e8d38caAlan Stern dum->gadget.a_hnp_support = 1; 13905742b0c95026c817d9c266174ca39a909e8d38caAlan Stern break; 13915742b0c95026c817d9c266174ca39a909e8d38caAlan Stern case USB_DEVICE_A_ALT_HNP_SUPPORT: 13925742b0c95026c817d9c266174ca39a909e8d38caAlan Stern dum->gadget.a_alt_hnp_support 13935742b0c95026c817d9c266174ca39a909e8d38caAlan Stern = 1; 13945742b0c95026c817d9c266174ca39a909e8d38caAlan Stern break; 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value == 0) { 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus |= 1400cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern (1 << w_value); 14011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (setup.bRequestType == Ep_Request) { 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // endpoint halt 1406cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ep2 = find_endpoint (dum, w_index); 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep2) { 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep2->halted = 1; 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_REQ_CLEAR_FEATURE: 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType == Dev_Request) { 1418cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern switch (w_value) { 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_DEVICE_REMOTE_WAKEUP: 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus &= ~(1 << 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_DEVICE_REMOTE_WAKEUP); 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (setup.bRequestType == Ep_Request) { 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // endpoint halt 1431cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ep2 = find_endpoint (dum, w_index); 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep2) { 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep2->halted = 0; 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_REQ_GET_STATUS: 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType == Dev_InRequest 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || setup.bRequestType 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == Intf_InRequest 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || setup.bRequestType 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == Ep_InRequest 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ) { 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf; 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // device: remote wakeup, selfpowered 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // interface: nothing 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // endpoint: halt 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = (char *)urb->transfer_buffer; 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->transfer_buffer_length > 0) { 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (setup.bRequestType == 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds Ep_InRequest) { 1457cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ep2 = find_endpoint (dum, w_index); 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep2) { 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = -EOPNOTSUPP; 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf [0] = ep2->halted; 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (setup.bRequestType == 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds Dev_InRequest) { 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf [0] = (u8) 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus; 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf [0] = 0; 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->transfer_buffer_length > 1) 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf [1] = 0; 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length = min (2, 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->transfer_buffer_length); 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = 0; 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, 0); 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver handles all other requests. block 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * until setup() returns; no reentrancy issues etc. 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value > 0) { 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = dum->driver->setup (&dum->gadget, 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &setup); 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value >= 0) { 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no delays (max 64KB data stage) */ 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = 64*1024; 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto treat_control_like_bulk; 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* error, see below */ 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value < 0) { 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value != -EOPNOTSUPP) 1499d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "setup --> %d\n", 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value); 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -EPIPE); 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length = 0; 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* non-control requests */ 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = total; 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_ISOCHRONOUS: 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * use urb->iso_frame_desc[i]. 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete whether or not ep has requests queued. 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * report random errors, to debug drivers. 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds maybe_set_status (urb, -ENOSYS); 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_INTERRUPT: 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this almost certainly polls too fast. 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FALLTHROUGH */ 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // case PIPE_BULK: case PIPE_CONTROL: 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds treat_control_like_bulk: 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = transfer (dum, urb, ep, limit); 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* incomplete transfer? */ 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->status == -EINPROGRESS) 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsreturn_urb: 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->hcpriv = NULL; 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del (&urbp->urbp_list); 15441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (urbp); 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep) 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = ep->setup_stage = 0; 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_hcd_giveback_urb (dummy_to_hcd(dum), urb, NULL); 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1555391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (list_empty (&dum->urbp_list)) { 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_put_dev (dum->udev); 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->udev = NULL; 1558391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern } else if (dum->rh_state == DUMMY_RH_RUNNING) { 1559391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* want a 1 msec delay here */ 1560391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern mod_timer (&dum->timer, jiffies + msecs_to_jiffies(1)); 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PORT_C_MASK \ 1569c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern ((USB_PORT_STAT_C_CONNECTION \ 1570c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_ENABLE \ 1571c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_SUSPEND \ 1572c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_OVERCURRENT \ 1573c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_RESET) << 16) 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_status (struct usb_hcd *hcd, char *buf) 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1579391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern int retval = 0; 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 1584391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (hcd->state != HC_STATE_RUNNING) 1585391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern goto done; 1586f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1587f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->resuming && time_after_eq (jiffies, dum->re_timeout)) { 1588f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 1589f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status &= ~USB_PORT_STAT_SUSPEND; 1590f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1591f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 1592f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1593391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if ((dum->port_status & PORT_C_MASK) != 0) { 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *buf = (1 << 1); 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_dbg (dummy_dev(dum), "port status 0x%08x has changes\n", 1596391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->port_status); 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 1; 1598391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (dum->rh_state == DUMMY_RH_SUSPENDED) 1599391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_resume_root_hub (hcd); 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1601391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sterndone: 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldshub_descriptor (struct usb_hub_descriptor *desc) 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset (desc, 0, sizeof *desc); 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescriptorType = 0x29; 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescLength = 9; 1612cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern desc->wHubCharacteristics = (__force __u16) 1613cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern (__constant_cpu_to_le16 (0x0001)); 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bNbrPorts = 1; 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bitmap [0] = 0xff; 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bitmap [1] = 0xff; 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_control ( 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 typeReq, 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wValue, 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wIndex, 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf, 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wLength 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = 0; 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (hcd->state != HC_STATE_RUNNING) 1632391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ETIMEDOUT; 1633391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (typeReq) { 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearHubFeature: 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearPortFeature: 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 1642c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern if (dum->port_status & USB_PORT_STAT_SUSPEND) { 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 20msec resume signaling */ 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->resuming = 1; 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->re_timeout = jiffies + 1646f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern msecs_to_jiffies(20); 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_POWER: 1650f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->port_status & USB_PORT_STAT_POWER) 1651f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dev_dbg (dummy_dev(dum), "power-off\n"); 1652f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->port_status &= ~(1 << wValue); 1655f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubDescriptor: 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hub_descriptor ((struct usb_hub_descriptor *) buf); 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubStatus: 1662cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern *(__le32 *) buf = __constant_cpu_to_le32 (0); 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetPortStatus: 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (wIndex != 1) 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* whoever resets or resumes must GetPortStatus to 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete it!! 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1671f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->resuming && 1672f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern time_after_eq (jiffies, dum->re_timeout)) { 1673c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 1674c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status &= ~USB_PORT_STAT_SUSPEND; 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1676f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->port_status & USB_PORT_STAT_RESET) != 0 && 1677f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern time_after_eq (jiffies, dum->re_timeout)) { 1678c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status |= (USB_PORT_STAT_C_RESET << 16); 1679c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status &= ~USB_PORT_STAT_RESET; 1680f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->pullup) { 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->port_status |= USB_PORT_STAT_ENABLE; 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* give it the best speed we agree on */ 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.speed = dum->driver->speed; 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.ep0->maxpacket = 64; 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->port_status |= 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_PORT_STAT_HIGH_SPEED; 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.ep0->maxpacket = 8; 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->port_status |= 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_PORT_STAT_LOW_SPEED; 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->gadget.speed = USB_SPEED_FULL; 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1701f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1702cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ((__le16 *) buf)[0] = cpu_to_le16 (dum->port_status); 1703cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Stern ((__le16 *) buf)[1] = cpu_to_le16 (dum->port_status >> 16); 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetHubFeature: 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetPortFeature: 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 1711f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (dum->active) { 1712c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern dum->port_status |= USB_PORT_STAT_SUSPEND; 1713f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1714f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* HNP would happen here; for now we 1715f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern * assume b_bus_req is always true. 1716f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern */ 1717f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1718f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (((1 << USB_DEVICE_B_HNP_ENABLE) 1719f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern & dum->devstatus) != 0) 1720f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dev_dbg (dummy_dev(dum), 17215742b0c95026c817d9c266174ca39a909e8d38caAlan Stern "no HNP yet!\n"); 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1724f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern case USB_PORT_FEAT_POWER: 1725f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status |= USB_PORT_STAT_POWER; 1726f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1727f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern break; 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_RESET: 1729f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* if it's already enabled, disable */ 1730f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status &= ~(USB_PORT_STAT_ENABLE 1731f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_LOW_SPEED 1732f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_HIGH_SPEED); 1733391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->devstatus = 0; 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 50msec reset signaling */ 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->re_timeout = jiffies + msecs_to_jiffies(50); 1736f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1738f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if ((dum->port_status & USB_PORT_STAT_POWER) != 0) { 1739f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->port_status |= (1 << wValue); 1740f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern set_link_state (dum); 1741f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_dbg (dummy_dev(dum), 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "hub control req%04x v%04x i%04x l%d\n", 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds typeReq, wValue, wIndex, wLength); 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* "protocol stall" on error */ 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 17521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 1754685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern 1755685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern if ((dum->port_status & PORT_C_MASK) != 0) 1756685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (hcd); 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1760391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_hub_suspend (struct usb_hcd *hcd) 1761391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1762391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum = hcd_to_dummy (hcd); 1763391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1764391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irq (&dum->lock); 1765391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->rh_state = DUMMY_RH_SUSPENDED; 1766391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern set_link_state (dum); 1767391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irq (&dum->lock); 1768391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1769391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1770391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1771391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_hub_resume (struct usb_hcd *hcd) 1772391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1773391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct dummy *dum = hcd_to_dummy (hcd); 1774391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1775391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_lock_irq (&dum->lock); 1776391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->rh_state = DUMMY_RH_RUNNING; 1777391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern set_link_state (dum); 1778391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (!list_empty(&dum->urbp_list)) 1779391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern mod_timer (&dum->timer, jiffies); 1780391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern spin_unlock_irq (&dum->lock); 1781391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1782391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline ssize_t 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsshow_urb (char *buf, size_t size, struct urb *urb) 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ep = usb_pipeendpoint (urb->pipe); 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return snprintf (buf, size, 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "urb/%p %s ep%d%s%s len %d/%d\n", 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb, 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (urb->dev->speed) { 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: s = "ls"; break; 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: s = "fs"; break; 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: s = "hs"; break; 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: s = "?"; break; 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s; }), 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; \ 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { \ 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_CONTROL: s = ""; break; \ 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_BULK: s = "-bulk"; break; \ 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_INTERRUPT: s = "-int"; break; \ 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: s = "-iso"; break; \ 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s;}), 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length, urb->transfer_buffer_length); 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 181310523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_urbs (struct device *dev, struct device_attribute *attr, char *buf) 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd = dev_get_drvdata (dev); 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = hcd_to_dummy (hcd); 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t size = 0; 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (urbp, &dum->urbp_list, urbp_list) { 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t temp; 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += temp; 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size += temp; 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return size; 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_start (struct usb_hcd *hcd) 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MASTER side init ... we emulate a root hub that'll only ever 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * talk to one device (the slave side). Also appears in sysfs, 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * just like more familiar pci-based HCDs. 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init (&dum->lock); 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_timer (&dum->timer); 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->timer.function = dummy_timer; 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->timer.data = (unsigned long) dum; 1850391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dum->rh_state = DUMMY_RH_RUNNING; 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&dum->urbp_list); 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1854bc96c0ad1ed0c938fefc0423aa99f086c5a2a1eaAlan Stern /* only show a low-power port: just 8mA */ 1855bc96c0ad1ed0c938fefc0423aa99f086c5a2a1eaAlan Stern hcd->power_budget = 8; 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hcd->state = HC_STATE_RUNNING; 1857685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern hcd->uses_new_polling = 1; 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18595742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#ifdef CONFIG_USB_OTG 18605742b0c95026c817d9c266174ca39a909e8d38caAlan Stern hcd->self.otg_port = 1; 18615742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#endif 18625742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds device_create_file (dummy_dev(dum), &dev_attr_urbs); 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dummy_stop (struct usb_hcd *hcd) 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = hcd_to_dummy (hcd); 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds device_remove_file (dummy_dev(dum), &dev_attr_urbs); 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_gadget_unregister_driver (dum->driver); 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_info (dummy_dev(dum), "stopped\n"); 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_h_get_frame (struct usb_hcd *hcd) 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dummy_g_get_frame (NULL); 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct hc_driver dummy_hcd = { 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .description = (char *) driver_name, 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .product_desc = "Dummy host controller", 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hcd_priv_size = sizeof(struct dummy), 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .flags = HCD_USB2, 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = dummy_start, 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = dummy_stop, 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_enqueue = dummy_urb_enqueue, 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_dequeue = dummy_urb_dequeue, 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame_number = dummy_h_get_frame, 19001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_status_data = dummy_hub_status, 19021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_control = dummy_hub_control, 1903391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .hub_suspend = dummy_hub_suspend, 1904391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .hub_resume = dummy_hub_resume, 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1907d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic int dummy_hcd_probe (struct device *dev) 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd; 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_info (dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hcd = usb_create_hcd (&dummy_hcd, dev, dev->bus_id); 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!hcd) 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the_controller = hcd_to_dummy (hcd); 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_add_hcd(hcd, 0, 0); 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval != 0) { 19211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_put_hcd (hcd); 19221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the_controller = NULL; 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1927d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic int dummy_hcd_remove (struct device *dev) 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd; 19301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hcd = dev_get_drvdata (dev); 19321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_remove_hcd (hcd); 19331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_put_hcd (hcd); 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the_controller = NULL; 1935d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 19361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1938391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_hcd_suspend (struct device *dev, pm_message_t state, 1939391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern u32 level) 1940391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1941391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 1942391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1943391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (level != SUSPEND_DISABLE) 1944391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1945391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1946391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev_dbg (dev, "%s\n", __FUNCTION__); 1947391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern hcd = dev_get_drvdata (dev); 1948391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1949391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#ifndef CONFIG_USB_SUSPEND 1950391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* Otherwise this would never happen */ 1951391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_lock_device (hcd->self.root_hub); 1952391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dummy_hub_suspend (hcd); 1953391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_unlock_device (hcd->self.root_hub); 1954391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#endif 1955391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1956391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern hcd->state = HC_STATE_SUSPENDED; 1957391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1958391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1959391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1960391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternstatic int dummy_hcd_resume (struct device *dev, u32 level) 1961391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1962391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 1963391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1964391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern if (level != RESUME_ENABLE) 1965391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1966391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1967391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dev_dbg (dev, "%s\n", __FUNCTION__); 1968391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern hcd = dev_get_drvdata (dev); 1969391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern hcd->state = HC_STATE_RUNNING; 1970391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1971391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#ifndef CONFIG_USB_SUSPEND 1972391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* Otherwise this would never happen */ 1973391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_lock_device (hcd->self.root_hub); 1974391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern dummy_hub_resume (hcd); 1975391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_unlock_device (hcd->self.root_hub); 1976391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#endif 1977391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1978391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_poll_rh_status (hcd); 1979391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1980391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1981391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1982d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic struct device_driver dummy_hcd_driver = { 1983d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .name = (char *) driver_name, 1984d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .bus = &platform_bus_type, 1985d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_hcd_probe, 1986d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_hcd_remove, 1987391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_hcd_suspend, 1988391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_hcd_resume, 1989d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1991d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/*-------------------------------------------------------------------------*/ 19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1993d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/* These don't need to do anything because the pdev structures are 1994d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern * statically allocated. */ 1995d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic void 1996d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sterndummy_udc_release (struct device *dev) {} 19971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1998d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic void 1999d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sterndummy_hcd_release (struct device *dev) {} 2000d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2001d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic struct platform_device the_udc_pdev = { 2002d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .name = (char *) gadget_name, 2003d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .id = -1, 2004d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .dev = { 2005d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .release = dummy_udc_release, 2006d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern }, 2007d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 20081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2009d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic struct platform_device the_hcd_pdev = { 2010d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .name = (char *) driver_name, 2011d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .id = -1, 2012d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .dev = { 2013d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .release = dummy_hcd_release, 2014d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern }, 2015d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 20161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init (void) 20181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_disabled ()) 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2023d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2024d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern retval = driver_register (&dummy_hcd_driver); 2025d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 2027d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2028d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern retval = driver_register (&dummy_udc_driver); 2029d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2030d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern goto err_register_udc_driver; 2031d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2032d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern retval = platform_device_register (&the_hcd_pdev); 2033d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2034d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern goto err_register_hcd; 2035d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2036d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern retval = platform_device_register (&the_udc_pdev); 2037d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2038d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern goto err_register_udc; 2039d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return retval; 2040d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2041d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternerr_register_udc: 2042d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern platform_device_unregister (&the_hcd_pdev); 2043d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternerr_register_hcd: 2044d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern driver_unregister (&dummy_udc_driver); 2045d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternerr_register_udc_driver: 2046d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern driver_unregister (&dummy_hcd_driver); 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init (init); 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit cleanup (void) 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2053d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern platform_device_unregister (&the_udc_pdev); 2054d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern platform_device_unregister (&the_hcd_pdev); 2055d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern driver_unregister (&dummy_udc_driver); 2056d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern driver_unregister (&dummy_hcd_driver); 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit (cleanup); 2059