dummy_hcd.c revision d262127c330b852ce4b210a0b1b06e69d4d87704
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 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This exposes a device side "USB gadget" API, driven by requests to a 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Linux-USB host controller driver. USB traffic is simulated; there's 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * no need for USB hardware. Use this with two other drivers: 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Gadget driver, responding to requests (slave); 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Host-side device driver, as already familiar in Linux. 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Having this all in one kernel can help some stages of development, 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bypassing some hardware (and driver) issues. UML could help too. 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/timer.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/list.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 38d052d1beff706920e82c5d55006b08e256b5df09Russell King#include <linux/platform_device.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb.h> 409454a57ab5922e5cd25321cae9d1a8cbeb3e2e85David Brownell#include <linux/usb/gadget.h> 4127729aadd31dafddaaf64c24f8ef6d0ff750f3aaEric Lescouet#include <linux/usb/hcd.h> 4214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior#include <linux/scatterlist.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/irq.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/unaligned.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_DESC "USB Host+Gadget Emulator" 52391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#define DRIVER_VERSION "02 May 2005" 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 54caf29f62655e7aa57996821535d11fa3b0537b6bAlan Stern#define POWER_BUDGET 500 /* in mA; use 8 for low-power port testing */ 55caf29f62655e7aa57996821535d11fa3b0537b6bAlan Stern 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char driver_name [] = "dummy_hcd"; 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char driver_desc [] = "USB Host+Gadget Emulator"; 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char gadget_name [] = "dummy_udc"; 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION (DRIVER_DESC); 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR ("David Brownell"); 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE ("GPL"); 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 651cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstruct dummy_hcd_module_parameters { 661cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman bool is_super_speed; 677eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman bool is_high_speed; 681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman}; 691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic struct dummy_hcd_module_parameters mod_data = { 717eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman .is_super_speed = false, 727eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman .is_high_speed = true, 731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman}; 741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanmodule_param_named(is_super_speed, mod_data.is_super_speed, bool, S_IRUGO); 751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana BrokhmanMODULE_PARM_DESC(is_super_speed, "true to simulate SuperSpeed connection"); 767eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhmanmodule_param_named(is_high_speed, mod_data.is_high_speed, bool, S_IRUGO); 777eca4c5a8b73f22ad16ad6e76b901351732355daTatyana BrokhmanMODULE_PARM_DESC(is_high_speed, "true to simulate HighSpeed connection"); 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* gadget side driver data structres */ 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy_ep { 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head queue; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long last_io; /* jiffies timestamp */ 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget *gadget; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct usb_endpoint_descriptor *desc; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ep ep; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned halted : 1; 88851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern unsigned wedged : 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}; 14252950ed40dc97456209979af1d8f51b63cf6dcabTobias Klauser#define DUMMY_ENDPOINTS ARRAY_SIZE(ep_name) 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; 15114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior struct sg_mapping_iter miter; 15214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior u32 miter_started; 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 155391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 156391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternenum dummy_rh_state { 157391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_RESET, 158391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_SUSPENDED, 159391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_RUNNING 160391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern}; 161391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 162cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstruct dummy_hcd { 163cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum; 164cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman enum dummy_rh_state rh_state; 165cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct timer_list timer; 166cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman u32 port_status; 167cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman u32 old_status; 168cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned long re_timeout; 169cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 170cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct usb_device *udev; 171cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct list_head urbp_list; 172cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 173cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned active:1; 174cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned old_active:1; 175cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned resuming:1; 176cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman}; 177cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy { 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SLAVE/GADGET side support 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep ep [DUMMY_ENDPOINTS]; 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int address; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget gadget; 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget_driver *driver; 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request fifo_req; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 fifo_buf [FIFO_SIZE]; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 devstatus; 191391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern unsigned udc_suspended:1; 192f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned pullup:1; 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MASTER/HOST side support 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 197cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *hs_hcd; 1981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct dummy_hcd *ss_hcd; 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 201cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd) 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 203cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return (struct dummy_hcd *) (hcd->hcd_priv); 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 206cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct usb_hcd *dummy_hcd_to_hcd(struct dummy_hcd *dum) 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of((void *) dum, struct usb_hcd, hcd_priv); 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 211cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct device *dummy_dev(struct dummy_hcd *dum) 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 213cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return dummy_hcd_to_hcd(dum)->self.controller; 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 216d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic inline struct device *udc_dev (struct dummy *dum) 217d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 218d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return dum->gadget.dev.parent; 219d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 220d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *ep_to_dummy (struct dummy_ep *ep) 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (ep->gadget, struct dummy, gadget); 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 226cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget) 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 228cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = container_of(gadget, struct dummy, gadget); 2291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->gadget.speed == USB_SPEED_SUPER) 2301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return dum->ss_hcd; 2311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 2321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return dum->hs_hcd; 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *gadget_dev_to_dummy (struct device *dev) 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (dev, struct dummy, gadget.dev); 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 240cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic struct dummy the_controller; 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 244f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* SLAVE/GADGET SIDE UTILITY ROUTINES */ 245f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 246f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* called with spinlock held */ 247f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic void nuke (struct dummy *dum, struct dummy_ep *ep) 248f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 249f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern while (!list_empty (&ep->queue)) { 250f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy_request *req; 251f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 252f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req = list_entry (ep->queue.next, struct dummy_request, queue); 253f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern list_del_init (&req->queue); 254f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req->req.status = -ESHUTDOWN; 255f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 256f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock (&dum->lock); 257f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req->req.complete (&ep->ep, &req->req); 258f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock (&dum->lock); 259f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 260f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 261f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 262f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* caller must hold lock */ 263f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic void 264f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstop_activity (struct dummy *dum) 265f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 266f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy_ep *ep; 267f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 268f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* prevent any more requests */ 269f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->address = 0; 270f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 271f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* The timer is left running so that outstanding URBs can fail */ 272f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 273f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* nuke any pending requests first, so driver i/o is quiesced */ 274f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern list_for_each_entry (ep, &dum->gadget.ep_list, ep.ep_list) 275f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern nuke (dum, ep); 276f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 277f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* driver now does any non-usb quiescing necessary */ 278f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 279f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 2801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman/** 2811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * set_link_state_by_speed() - Sets the current state of the link according to 2821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * the hcd speed 2831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * @dum_hcd: pointer to the dummy_hcd structure to update the link state for 2841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * 2851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * This function updates the port_status according to the link state and the 2861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * speed of the hcd. 2871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 2881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic void set_link_state_by_speed(struct dummy_hcd *dum_hcd) 2891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 2901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct dummy *dum = dum_hcd->dum; 2911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3) { 2931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) == 0) { 2941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 0; 2951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else if (!dum->pullup || dum->udc_suspended) { 2961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* UDC suspend must cause a disconnect */ 2971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | 2981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_ENABLE); 2991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) != 0) 3011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3021cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3031cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 3041cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* device is connected and not suspended */ 3051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_CONNECTION | 3061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_SPEED_5GBPS) ; 3071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) == 0) 3091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & 3121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_ENABLE) == 1 && 3131cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (dum_hcd->port_status & 3141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SS_PORT_LS_U0) == 1 && 3151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->rh_state != DUMMY_RH_SUSPENDED) 3161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->active = 1; 3171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 3181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 3191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) { 3201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 0; 3211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else if (!dum->pullup || dum->udc_suspended) { 3221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* UDC suspend must cause a disconnect */ 3231cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | 3241cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_ENABLE | 3251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_LOW_SPEED | 3261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_HIGH_SPEED | 3271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_SUSPEND); 3281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) != 0) 3301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 3331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_CONNECTION; 3341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) == 0) 3361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0) 3391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; 3401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else if ((dum_hcd->port_status & 3411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_SUSPEND) == 0 && 3421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->rh_state != DUMMY_RH_SUSPENDED) 3431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->active = 1; 3441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 3451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 3461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 3471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 348f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* caller must hold lock */ 349cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic void set_link_state(struct dummy_hcd *dum_hcd) 350f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 351cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = dum_hcd->dum; 352cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 353cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->active = 0; 3541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->pullup) 3551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 && 3561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->gadget.speed != USB_SPEED_SUPER) || 3571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (dummy_hcd_to_hcd(dum_hcd)->speed != HCD_USB3 && 3581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->gadget.speed == USB_SPEED_SUPER)) 3591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return; 3601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 3611cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman set_link_state_by_speed(dum_hcd); 362f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 363cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 || 364cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->active) 365cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->resuming = 0; 366f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 3671cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* if !connected or reset */ 368cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 || 369cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) { 3701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 3711cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * We're connected and not reset (reset occurred now), 3721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * and driver attached - disconnect! 3731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 374cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 && 3751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 && 3761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver) { 3771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman stop_activity(dum); 3781cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_unlock(&dum->lock); 3791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver->disconnect(&dum->gadget); 3801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_lock(&dum->lock); 381f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 382cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } else if (dum_hcd->active != dum_hcd->old_active) { 383cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->old_active && dum->driver->suspend) { 3841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_unlock(&dum->lock); 3851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver->suspend(&dum->gadget); 3861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_lock(&dum->lock); 3871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else if (!dum_hcd->old_active && dum->driver->resume) { 3881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_unlock(&dum->lock); 3891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver->resume(&dum->gadget); 3901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_lock(&dum->lock); 391f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 392f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 393f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 394cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->old_status = dum_hcd->port_status; 395cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->old_active = dum_hcd->active; 396f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 397f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 398f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/*-------------------------------------------------------------------------*/ 399f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* SLAVE/GADGET SIDE DRIVER 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This only tracks gadget state. All the work is done when the host 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * side tries some (emulated) i/o operation. Real device controller 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * drivers would do real i/o using dma, fifos, irqs, timers, etc. 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define is_enabled(dum) \ 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (dum->port_status & USB_PORT_STAT_ENABLE) 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 414cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned max; 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !desc || ep->desc || _ep->name == ep0name 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || desc->bDescriptorType != USB_DT_ENDPOINT) 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 424cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum->driver) 425cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return -ESHUTDOWN; 426719e52cbc7b826fae9501f3b86b8cbc25a4c5268Sebastian Andrzej Siewior 427719e52cbc7b826fae9501f3b86b8cbc25a4c5268Sebastian Andrzej Siewior dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 428cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!is_enabled(dum_hcd)) 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 430cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 431cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman /* 432cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the 433cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * maximum packet size. 4341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * For SS devices the wMaxPacketSize is limited by 1024. 435cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman */ 43629cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto max = usb_endpoint_maxp(desc) & 0x7ff; 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* drivers must not request bad settings, since lower levels 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (hardware or its drivers) may not check. some endpoints 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can't do iso, many have maxpacket limitations, etc. 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since this "hardware" driver is here to help debugging, we 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * have some extra sanity checks. (there could be more though, 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * especially for "ep9out" style fixed function ones.) 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EINVAL; 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (desc->bmAttributes & 0x03) { 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_BULK: 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-iso") 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || strstr (ep->ep.name, "-int")) { 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 4541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 4551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (max == 1024) 4561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 4571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto done; 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max == 512) 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4619063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil goto done; 4629063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil case USB_SPEED_FULL: 4639063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil if (max == 8 || max == 16 || max == 32 || max == 64) 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we'll fake any legal size */ 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4669063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil /* save a return statement */ 4679063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil default: 4689063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil goto done; 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_INT: 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-iso")) /* bulk is ok */ 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware might not handle all packet sizes */ 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 4761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1024) 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 64) 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 8) 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_ISOC: 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-bulk") 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || strstr (ep->ep.name, "-int")) 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware might not handle all packet sizes */ 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 4971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1024) 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1023) 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* few chips support control except on ep0 */ 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _ep->maxpacket = max; 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = desc; 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 518d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d\n", 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _ep->name, 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bEndpointAddress & 0x0f, 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *val; 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (desc->bmAttributes & 0x03) { 5247c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_ENDPOINT_XFER_BULK: 5257c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "bulk"; 5267c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5277c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_ENDPOINT_XFER_ISOC: 5287c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "iso"; 5297c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5307c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_ENDPOINT_XFER_INT: 5317c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "intr"; 5327c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5337c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman default: 5347c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "ctrl"; 5357c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; val; }), 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds max); 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* at this point real hardware should be NAKing transfers 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to that endpoint, until a buffer is queued to it. 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 542851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern ep->halted = ep->wedged = 0; 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdone: 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_disable (struct usb_ep *_ep) 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !ep->desc || _ep->name == ep0name) 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = NULL; 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nuke (dum, ep); 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 566d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "disabled %s\n", _ep->name); 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_request * 57155016f10e31bb15b85d8c500f979dfdceb37d548Al Virodummy_alloc_request (struct usb_ep *_ep, gfp_t mem_flags) 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep) 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5807039f4224d4e40b06308d5c1a97427af1a142459Eric Sesterhenn req = kzalloc(sizeof(*req), mem_flags); 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!req) 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&req->queue); 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &req->req; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_free_request (struct usb_ep *_ep, struct usb_request *_req) 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = usb_request_to_dummy_request (_req); 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds WARN_ON (!list_empty (&req->queue)); 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (req); 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfifo_complete (struct usb_ep *ep, struct usb_request *req) 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 6085db539e49fc7471e23bf3c94ca304f008cb7b7f3Olav Kongasdummy_queue (struct usb_ep *_ep, struct usb_request *_req, 60955016f10e31bb15b85d8c500f979dfdceb37d548Al Viro gfp_t mem_flags) 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 614cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = usb_request_to_dummy_request (_req); 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_req || !list_empty (&req->queue) || !_req->complete) 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || (!ep->desc && _ep->name != ep0name)) 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 626719e52cbc7b826fae9501f3b86b8cbc25a4c5268Sebastian Andrzej Siewior dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 627cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum->driver || !is_enabled(dum_hcd)) 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 631d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, _req, _ep->name, _req->length, _req->buf); 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -EINPROGRESS; 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = 0; 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* implement an emulated single-request FIFO */ 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&dum->fifo_req.queue) && 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&ep->queue) && 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->length <= FIFO_SIZE) { 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = &dum->fifo_req; 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req = *_req; 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.buf = dum->fifo_buf; 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy (dum->fifo_buf, _req->buf, _req->length); 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.context = dum; 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete = fifo_complete; 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 651c728df70ab0dd59b8ccdc3c611ea88925e6697dbDavid Brownell list_add_tail(&req->queue, &ep->queue); 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = _req->length; 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = 0; 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 657c728df70ab0dd59b8ccdc3c611ea88925e6697dbDavid Brownell } else 658c728df70ab0dd59b8ccdc3c611ea88925e6697dbDavid Brownell list_add_tail(&req->queue, &ep->queue); 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware would likely enable transfers here, in case 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it'd been left NAKing. 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = -EINVAL; 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req = NULL; 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !_req) 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 683b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern local_irq_save (flags); 684b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern spin_lock (&dum->lock); 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (&req->req == _req) { 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -ECONNRESET; 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 693b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern spin_unlock (&dum->lock); 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval == 0) { 696d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "dequeued req %p from %s, len %d buf %p\n", 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req, _ep->name, _req->length, _req->buf); 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 701b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern local_irq_restore (flags); 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 706851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sterndummy_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged) 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep) 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!value) 718851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern ep->halted = ep->wedged = 0; 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !list_empty (&ep->queue)) 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EAGAIN; 722851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern else { 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 1; 724851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern if (wedged) 725851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern ep->wedged = 1; 726851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern } 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME clear emulated data toggle too */ 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sternstatic int 732851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sterndummy_set_halt(struct usb_ep *_ep, int value) 733851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern{ 734851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern return dummy_set_halt_and_wedge(_ep, value, 0); 735851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern} 736851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern 737851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sternstatic int dummy_set_wedge(struct usb_ep *_ep) 738851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern{ 739851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern if (!_ep || _ep->name == ep0name) 740851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern return -EINVAL; 741851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern return dummy_set_halt_and_wedge(_ep, 1, 1); 742851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern} 743851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_ep_ops dummy_ep_ops = { 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .enable = dummy_enable, 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disable = dummy_disable, 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .alloc_request = dummy_alloc_request, 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .free_request = dummy_free_request, 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .queue = dummy_queue, 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .dequeue = dummy_dequeue, 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_halt = dummy_set_halt, 755851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern .set_wedge = dummy_set_wedge, 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* there are both host and device side versions of this call ... */ 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_g_get_frame (struct usb_gadget *_gadget) 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timeval tv; 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_gettimeofday (&tv); 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tv.tv_usec / 1000; 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_wakeup (struct usb_gadget *_gadget) 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 771cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 773cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = gadget_to_dummy_hcd(_gadget); 774cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!(dum_hcd->dum->devstatus & ((1 << USB_DEVICE_B_HNP_ENABLE) 7755742b0c95026c817d9c266174ca39a909e8d38caAlan Stern | (1 << USB_DEVICE_REMOTE_WAKEUP)))) 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 777cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0) 778391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ENOLINK; 779cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 && 780cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state != DUMMY_RH_SUSPENDED) 781391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -EIO; 782391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 783391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* FIXME: What if the root hub is suspended but the port isn't? */ 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* hub notices our request, issues downstream resume, etc */ 786cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->resuming = 1; 787cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->re_timeout = jiffies + msecs_to_jiffies(20); 788cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dummy_hcd_to_hcd(dum_hcd)->rh_timer, dum_hcd->re_timeout); 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 796cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum = (gadget_to_dummy_hcd(_gadget))->dum; 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value) 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 804d262127c330b852ce4b210a0b1b06e69d4d87704Sebastian Andrzej Siewiorstatic void dummy_udc_update_ep0(struct dummy *dum) 805b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior{ 806c688419141ad6134d7973fcf182e3719e98d7491Sebastian Andrzej Siewior if (dum->gadget.speed == USB_SPEED_SUPER) 807b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->ep[0].ep.maxpacket = 9; 808c688419141ad6134d7973fcf182e3719e98d7491Sebastian Andrzej Siewior else 809b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->ep[0].ep.maxpacket = 64; 810b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior} 811b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 812f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic int dummy_pullup (struct usb_gadget *_gadget, int value) 813f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 814d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior struct dummy_hcd *dum_hcd; 815f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy *dum; 816f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned long flags; 817f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 818b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum = gadget_dev_to_dummy(&_gadget->dev); 819b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 820b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior if (value && dum->driver) { 821b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior if (mod_data.is_super_speed) 8227177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz dum->gadget.speed = dum->driver->max_speed; 823b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior else if (mod_data.is_high_speed) 824b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, 8257177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz dum->driver->max_speed); 826b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior else 827b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->gadget.speed = USB_SPEED_FULL; 828d262127c330b852ce4b210a0b1b06e69d4d87704Sebastian Andrzej Siewior dummy_udc_update_ep0(dum); 829b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 8307177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (dum->gadget.speed < dum->driver->max_speed) 831b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dev_dbg(udc_dev(dum), "This device can perform faster" 8327177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz " if you connect it to a %s port...\n", 8337177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz usb_speed_string(dum->driver->max_speed)); 834b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior } 835d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior dum_hcd = gadget_to_dummy_hcd(_gadget); 836d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior 837f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock_irqsave (&dum->lock, flags); 838f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = (value != 0); 839d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior set_link_state(dum_hcd); 840f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock_irqrestore (&dum->lock, flags); 841b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 842d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); 843f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern return 0; 844f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 845f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 846aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_start(struct usb_gadget *g, 847aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver); 848aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_stop(struct usb_gadget *g, 849aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver); 8500f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_gadget_ops dummy_ops = { 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame = dummy_g_get_frame, 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .wakeup = dummy_wakeup, 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_selfpowered = dummy_set_selfpowered, 855f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern .pullup = dummy_pullup, 856aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior .udc_start = dummy_udc_start, 857aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior .udc_stop = dummy_udc_stop, 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* "function" sysfs attribute */ 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 86410523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_function (struct device *dev, struct device_attribute *attr, char *buf) 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = gadget_dev_to_dummy (dev); 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver || !dum->driver->function) 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 872cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Sternstatic DEVICE_ATTR (function, S_IRUGO, show_function, NULL); 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver registration/unregistration. 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is basically hardware-specific; there's usually only one real USB 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * device (not host) controller since that's how USB devices are intended 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to work. So most implementations of these api calls will rely on the 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fact that only one driver will ever bind to the hardware. But curious 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hardware can be built with discrete components, so the gadget API doesn't 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * require that assumption. 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * For this emulator, it might be convenient to create a usb slave device 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for each driver that registers: just add to a big root hub. 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 890aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_start(struct usb_gadget *g, 891aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver) 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 893aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); 894aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy *dum = dum_hcd->dum; 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8967177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (driver->max_speed == USB_SPEED_UNKNOWN) 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SLAVE side init ... the layer above hardware, which 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can't enumerate without help from the driver we're binding. 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9035742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus = 0; 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = driver; 907d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 912aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_stop(struct usb_gadget *g, 913aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver) 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 915aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); 916aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy *dum = dum_hcd->dum; 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 918d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = NULL; 9222542787430fc46b4e07e0da4c6ec80ed230032e5Sebastian Andrzej Siewior 9232542787430fc46b4e07e0da4c6ec80ed230032e5Sebastian Andrzej Siewior dummy_pullup(&dum->gadget, 0); 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_enabled 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 929d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/* The gadget structure is stored inside the hcd structure and will be 930d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern * released along with it. */ 931d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic void 932d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sterndummy_gadget_release (struct device *dev) 933d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 934cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return; 935d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 936d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9370fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewiorstatic void init_dummy_udc_hw(struct dummy *dum) 9380fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior{ 9390fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior int i; 9400fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9410fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior INIT_LIST_HEAD(&dum->gadget.ep_list); 9420fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior for (i = 0; i < DUMMY_ENDPOINTS; i++) { 9430fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior struct dummy_ep *ep = &dum->ep[i]; 9440fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9450fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior if (!ep_name[i]) 9460fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior break; 9470fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->ep.name = ep_name[i]; 9480fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->ep.ops = &dummy_ep_ops; 9490fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior list_add_tail(&ep->ep.ep_list, &dum->gadget.ep_list); 9500fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->halted = ep->wedged = ep->already_seen = 9510fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->setup_stage = 0; 9520fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->ep.maxpacket = ~0; 953c688419141ad6134d7973fcf182e3719e98d7491Sebastian Andrzej Siewior ep->ep.max_streams = 16; 9540fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->last_io = jiffies; 9550fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->gadget = &dum->gadget; 9560fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->desc = NULL; 9570fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior INIT_LIST_HEAD(&ep->queue); 9580fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior } 9590fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9600fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior dum->gadget.ep0 = &dum->ep[0].ep; 9610fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior list_del_init(&dum->ep[0].ep.ep_list); 9620fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior INIT_LIST_HEAD(&dum->fifo_req.queue); 963f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior 964f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior#ifdef CONFIG_USB_OTG 965f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior dum->gadget.is_otg = 1; 966f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior#endif 9670fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior} 9680fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9698364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_udc_probe (struct platform_device *pdev) 970d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 971cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = &the_controller; 972d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern int rc; 973d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 974d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.name = gadget_name; 975d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.ops = &dummy_ops; 976d327ab5b6d660d6fe22b073b743fde1668e593bbMichal Nazarewicz dum->gadget.max_speed = USB_SPEED_SUPER; 977d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9780031a06e2f07ab0d1bc98c31dbb6801f95f4bf01Kay Sievers dev_set_name(&dum->gadget.dev, "gadget"); 9798364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern dum->gadget.dev.parent = &pdev->dev; 980d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.dev.release = dummy_gadget_release; 981d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern rc = device_register (&dum->gadget.dev); 98275d87cdf3cefd2744fabd3f2a558c49cdf36238bRahul Ruikar if (rc < 0) { 98375d87cdf3cefd2744fabd3f2a558c49cdf36238bRahul Ruikar put_device(&dum->gadget.dev); 984d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 98575d87cdf3cefd2744fabd3f2a558c49cdf36238bRahul Ruikar } 986d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9870fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior init_dummy_udc_hw(dum); 9880fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9890f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget); 9900f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior if (rc < 0) 9910f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior goto err_udc; 9920f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 993efd54a364121f61b2050b1df5ecb1b8329c4eabaAlan Stern rc = device_create_file (&dum->gadget.dev, &dev_attr_function); 994efd54a364121f61b2050b1df5ecb1b8329c4eabaAlan Stern if (rc < 0) 9950f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior goto err_dev; 9960f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior platform_set_drvdata(pdev, dum); 9970f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior return rc; 9980f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 9990f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewiorerr_dev: 10000f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&dum->gadget); 10010f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewiorerr_udc: 10020f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior device_unregister(&dum->gadget.dev); 1003d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 1004d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 1005d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 10068364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_udc_remove (struct platform_device *pdev) 1007d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 10088364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern struct dummy *dum = platform_get_drvdata (pdev); 1009d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 10100f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&dum->gadget); 10118364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern platform_set_drvdata (pdev, NULL); 1012d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_remove_file (&dum->gadget.dev, &dev_attr_function); 1013d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_unregister (&dum->gadget.dev); 1014d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 1015d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 1016d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 1017fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewiorstatic void dummy_udc_pm(struct dummy *dum, struct dummy_hcd *dum_hcd, 1018fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior int suspend) 1019391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1020fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior spin_lock_irq(&dum->lock); 1021fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dum->udc_suspended = suspend; 1022d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior set_link_state(dum_hcd); 1023fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior spin_unlock_irq(&dum->lock); 1024fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior} 1025fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior 1026fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewiorstatic int dummy_udc_suspend(struct platform_device *pdev, pm_message_t state) 1027fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior{ 1028fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy *dum = platform_get_drvdata(pdev); 1029fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 1030391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1031fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dev_dbg(&pdev->dev, "%s\n", __func__); 1032fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dummy_udc_pm(dum, dum_hcd, 1); 1033d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); 1034391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1035391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1036391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1037fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewiorstatic int dummy_udc_resume(struct platform_device *pdev) 1038391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1039fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy *dum = platform_get_drvdata(pdev); 1040fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 1041391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1042fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dev_dbg(&pdev->dev, "%s\n", __func__); 1043fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dummy_udc_pm(dum, dum_hcd, 0); 1044d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); 1045391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1046391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1047391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 10483ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell Kingstatic struct platform_driver dummy_udc_driver = { 1049d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_udc_probe, 1050d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_udc_remove, 1051391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_udc_suspend, 1052391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_udc_resume, 10533ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .driver = { 10543ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .name = (char *) gadget_name, 10553ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .owner = THIS_MODULE, 10563ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King }, 1057d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 1058d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* MASTER/HOST SIDE DRIVER 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this uses the hcd framework to hook up to host side drivers. 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * its root hub will only have one device, otherwise it acts like 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a normal host controller. 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * when urbs are queued, they're just stuck on a list that we 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scan in a timer callback. that callback connects writes from 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the host with reads from the device, and so on, based on the 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * usb 2.0 rules. 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_urb_enqueue ( 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb, 107655016f10e31bb15b85d8c500f979dfdceb37d548Al Viro gfp_t mem_flags 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 1078cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1081e9df41c5c5899259541dc928872cad4d07b82076Alan Stern int rc; 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp = kmalloc (sizeof *urbp, mem_flags); 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!urbp) 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp->urb = urb; 108714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior urbp->miter_started = 0; 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1089cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 1090cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 1091e9df41c5c5899259541dc928872cad4d07b82076Alan Stern rc = usb_hcd_link_urb_to_ep(hcd, urb); 1092e9df41c5c5899259541dc928872cad4d07b82076Alan Stern if (rc) { 1093e9df41c5c5899259541dc928872cad4d07b82076Alan Stern kfree(urbp); 1094e9df41c5c5899259541dc928872cad4d07b82076Alan Stern goto done; 1095e9df41c5c5899259541dc928872cad4d07b82076Alan Stern } 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1097cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum_hcd->udev) { 1098cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->udev = urb->dev; 1099cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_get_dev(dum_hcd->udev); 1100cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } else if (unlikely(dum_hcd->udev != urb->dev)) 1101cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n"); 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1103cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list); 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->hcpriv = urbp; 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipetype (urb->pipe) == PIPE_CONTROL) 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 1; /* mark as a new urb */ 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* kick the scheduler, it'll do the rest */ 1109cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!timer_pending(&dum_hcd->timer)) 1110cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies + 1); 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1112e9df41c5c5899259541dc928872cad4d07b82076Alan Stern done: 1113cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 1114e9df41c5c5899259541dc928872cad4d07b82076Alan Stern return rc; 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1117e9df41c5c5899259541dc928872cad4d07b82076Alan Sternstatic int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) 11181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1119cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 1120391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern unsigned long flags; 1121e9df41c5c5899259541dc928872cad4d07b82076Alan Stern int rc; 1122391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1123391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* giveback happens automatically in timer callback, 1124391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern * so make sure the callback happens */ 1125cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 1126cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 1127e9df41c5c5899259541dc928872cad4d07b82076Alan Stern 1128e9df41c5c5899259541dc928872cad4d07b82076Alan Stern rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1129cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && 1130cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman !list_empty(&dum_hcd->urbp_list)) 1131cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies); 1132e9df41c5c5899259541dc928872cad4d07b82076Alan Stern 1133cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 1134e9df41c5c5899259541dc928872cad4d07b82076Alan Stern return rc; 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1137a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewiorstatic int dummy_perform_transfer(struct urb *urb, struct dummy_request *req, 1138a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior u32 len) 1139a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior{ 1140a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior void *ubuf, *rbuf; 114114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior struct urbp *urbp = urb->hcpriv; 1142a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior int to_host; 114314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior struct sg_mapping_iter *miter = &urbp->miter; 114414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior u32 trans = 0; 114514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior u32 this_sg; 114614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior bool next_sg; 1147a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 1148a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior to_host = usb_pipein(urb->pipe); 1149a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior rbuf = req->req.buf + req->req.actual; 1150a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 115114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (!urb->num_sgs) { 115214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior ubuf = urb->transfer_buffer + urb->actual_length; 115314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (to_host) 115414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior memcpy(ubuf, rbuf, len); 115514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior else 115614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior memcpy(rbuf, ubuf, len); 115714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior return len; 115814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 115914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 116014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (!urbp->miter_started) { 116114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior u32 flags = SG_MITER_ATOMIC; 116214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 116314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (to_host) 116414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior flags |= SG_MITER_TO_SG; 116514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior else 116614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior flags |= SG_MITER_FROM_SG; 116714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 116814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior sg_miter_start(miter, urb->sg, urb->num_sgs, flags); 116914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior urbp->miter_started = 1; 117014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 117114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior next_sg = sg_miter_next(miter); 117214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (next_sg == false) { 117314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior WARN_ON_ONCE(1); 117414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior return -EINVAL; 117514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 117614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior do { 117714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior ubuf = miter->addr; 117814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior this_sg = min_t(u32, len, miter->length); 117914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior miter->consumed = this_sg; 118014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior trans += this_sg; 118114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 118214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (to_host) 118314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior memcpy(ubuf, rbuf, this_sg); 118414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior else 118514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior memcpy(rbuf, ubuf, this_sg); 118614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior len -= this_sg; 118714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 118814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (!len) 118914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior break; 119014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior next_sg = sg_miter_next(miter); 119114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (next_sg == false) { 119214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior WARN_ON_ONCE(1); 119314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior return -EINVAL; 119414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 119514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 119614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior rbuf += this_sg; 119714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } while (1); 119814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 119914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior sg_miter_stop(miter); 120014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior return trans; 1201a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior} 1202a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* transfer up to a frame's worth; caller must own lock */ 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 12054d2f110c51eec853c50f68cf068888a77551c8d3Alan Sterntransfer(struct dummy *dum, struct urb *urb, struct dummy_ep *ep, int limit, 12064d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern int *status) 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstop: 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if there's no request queued, the device is NAKing; return */ 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned host_len, dev_len, len; 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int is_short, to_host; 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rescan = 0; 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1..N packets of ep->ep.maxpacket each ... the last one 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * may be short (including zero length). 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * writer can send a zlp explicitly (length 0) or implicitly 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (length mod maxpacket zero, and 'zero' flag); they always 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * terminate reads. 12231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host_len = urb->transfer_buffer_length - urb->actual_length; 12251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_len = req->req.length - req->req.actual; 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (host_len, dev_len); 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME update emulated data toggle too */ 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to_host = usb_pipein (urb->pipe); 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely (len == 0)) 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = 1; 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* not enough bandwidth left? */ 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (limit < ep->ep.maxpacket && limit < len) 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (len, (unsigned) limit); 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len == 0) 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* use an extra pass for the final short packet */ 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len > ep->ep.maxpacket) { 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len -= (len % ep->ep.maxpacket); 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = (len % ep->ep.maxpacket) != 0; 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1248a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior len = dummy_perform_transfer(urb, req, len); 1249a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 125114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (len < 0) { 125214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior req->req.status = len; 125314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } else { 125414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior limit -= len; 125514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior urb->actual_length += len; 125614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior req->req.actual += len; 125714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* short packets terminate, maybe with overflow/underflow. 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it's only really an error to write too much. 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * partially filling a buffer optionally blocks queue advances 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (so completion handlers can clean up the queue) but we don't 1265b0d9efba3ec53468984aecef8eeaf079089f2e5aAlan Stern * need to emulate such data-in-flight. 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (is_short) { 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len == dev_len) { 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 12704d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (to_host) { 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dev_len > host_len) 12744d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = -EOVERFLOW; 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12764d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!to_host) { 12784d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 12791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len > dev_len) 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* many requests terminate without a short packet */ 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.length == req->req.actual 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !req->req.zero) 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->transfer_buffer_length == urb->actual_length 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !(urb->transfer_flags 12924d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern & URB_ZERO_PACKET)) 12934d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* device side completion --> continuable */ 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.status != -EINPROGRESS) { 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* requests might have been unlinked... */ 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 13061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* host side completion --> terminate */ 13094d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern if (*status != -EINPROGRESS) 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* rescan to continue with any other queued i/o */ 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rescan) 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto top; 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit = ep->ep.maxpacket; 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dum->gadget.speed == USB_SPEED_HIGH) { 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tmp; 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* high bandwidth mode */ 132729cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto tmp = usb_endpoint_maxp(ep->desc); 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp = (tmp >> 11) & 0x03; 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp *= 8 /* applies to entire frame */; 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit += limit * tmp; 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->gadget.speed == USB_SPEED_SUPER) { 13331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman switch (ep->desc->bmAttributes & 0x03) { 13341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_ENDPOINT_XFER_ISOC: 13351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Sec. 4.4.8.2 USB3.0 Spec */ 13361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman limit = 3 * 16 * 1024 * 8; 13371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 13381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_ENDPOINT_XFER_INT: 13391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Sec. 4.4.7.2 USB3.0 Spec */ 13401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman limit = 3 * 1024 * 8; 13411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 13421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_ENDPOINT_XFER_BULK: 13431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman default: 13441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 13451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 13461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1350cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman#define is_active(dum_hcd) ((dum_hcd->port_status & \ 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_PORT_STAT_SUSPEND)) \ 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 13581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ? 13601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->ss_hcd : dum->hs_hcd))) 13611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 13621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((address & ~USB_DIR_IN) == 0) 13631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &dum->ep [0]; 13641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 1; i < DUMMY_ENDPOINTS; i++) { 13651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = &dum->ep [i]; 13661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep->desc) 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc->bEndpointAddress == address) 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ep; 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_active 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_InRequest (Dev_Request | USB_DIR_IN) 13791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_InRequest (Intf_Request | USB_DIR_IN) 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_InRequest (Ep_Request | USB_DIR_IN) 13831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13848be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman 13858be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman/** 13868be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * handle_control_request() - handles all control transfers 13878be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @dum: pointer to dummy (the_controller) 13888be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @urb: the urb request to handle 13898be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @setup: pointer to the setup data for a USB device control 13908be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * request 13918be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @status: pointer to request handling status 13928be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * 13938be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * Return 0 - if the request was handled 13948be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * 1 - if the request wasn't handles 13958be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * error code on error 13968be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman */ 1397cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb, 13988be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman struct usb_ctrlrequest *setup, 13998be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman int *status) 14008be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman{ 14018be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman struct dummy_ep *ep2; 1402cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = dum_hcd->dum; 14038be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman int ret_val = 1; 14048be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman unsigned w_index; 14058be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman unsigned w_value; 14068be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman 14078be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_index = le16_to_cpu(setup->wIndex); 14088be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_value = le16_to_cpu(setup->wValue); 14098be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman switch (setup->bRequest) { 14108be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_SET_ADDRESS: 14118be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType != Dev_Request) 14128be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14138be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->address = w_value; 14148be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 14158be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dev_dbg(udc_dev(dum), "set_address = %d\n", 14168be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_value); 14178be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 14188be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14198be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_SET_FEATURE: 14208be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Dev_Request) { 14218be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 14228be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman switch (w_value) { 14238be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_REMOTE_WAKEUP: 14248be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14258be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_B_HNP_ENABLE: 14268be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->gadget.b_hnp_enable = 1; 14278be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14288be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_A_HNP_SUPPORT: 14298be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->gadget.a_hnp_support = 1; 14308be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14318be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_A_ALT_HNP_SUPPORT: 14328be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->gadget.a_alt_hnp_support = 1; 14338be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U1_ENABLE: 14351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 14361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 14371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U1_ENABLED; 14381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 14391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 14401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U2_ENABLE: 14421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 14431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 14441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U2_ENABLED; 14451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 14461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 14471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_LTM_ENABLE: 14491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 14501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 14511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_LTM_ENABLED; 14521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 14531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 14541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14558be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman default: 14568be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 14578be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14588be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (ret_val == 0) { 14598be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->devstatus |= (1 << w_value); 14608be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 14618be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14628be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else if (setup->bRequestType == Ep_Request) { 14638be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman /* endpoint halt */ 14648be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2 = find_endpoint(dum, w_index); 14658be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2 || ep2->ep.name == ep0name) { 14668be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 14678be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14688be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14698be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2->halted = 1; 14708be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 14718be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 14728be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14738be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14748be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_CLEAR_FEATURE: 14758be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Dev_Request) { 14768be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 14778be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman switch (w_value) { 14788be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_REMOTE_WAKEUP: 14798be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_value = USB_DEVICE_REMOTE_WAKEUP; 14808be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U1_ENABLE: 14821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 14831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 14841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U1_ENABLED; 14851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 14861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 14871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U2_ENABLE: 14891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 14901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 14911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U2_ENABLED; 14921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 14931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 14941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_LTM_ENABLE: 14961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 14971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 14981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_LTM_ENABLED; 14991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 15001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 15011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 15028be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman default: 15038be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 15048be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15058be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15068be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (ret_val == 0) { 15078be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->devstatus &= ~(1 << w_value); 15088be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 15098be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15108be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else if (setup->bRequestType == Ep_Request) { 15118be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman /* endpoint halt */ 15128be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2 = find_endpoint(dum, w_index); 15138be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2) { 15148be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 15158be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15168be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15178be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2->wedged) 15188be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2->halted = 0; 15198be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 15208be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 15218be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15228be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15238be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_GET_STATUS: 15248be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Dev_InRequest 15258be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman || setup->bRequestType == Intf_InRequest 15268be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman || setup->bRequestType == Ep_InRequest) { 15278be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman char *buf; 15288be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman /* 15298be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * device: remote wakeup, selfpowered 15308be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * interface: nothing 15318be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * endpoint: halt 15328be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman */ 15338be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf = (char *)urb->transfer_buffer; 15348be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (urb->transfer_buffer_length > 0) { 15358be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Ep_InRequest) { 15368be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2 = find_endpoint(dum, w_index); 15378be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2) { 15388be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 15398be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15408be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15418be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[0] = ep2->halted; 15428be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else if (setup->bRequestType == 15438be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman Dev_InRequest) { 15448be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[0] = (u8)dum->devstatus; 15458be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else 15468be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[0] = 0; 15478be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15488be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (urb->transfer_buffer_length > 1) 15498be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[1] = 0; 15508be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman urb->actual_length = min_t(u32, 2, 15518be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman urb->transfer_buffer_length); 15528be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 15538be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 15548be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15558be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15568be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15578be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman return ret_val; 15588be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman} 15598be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* drive both sides of the transfers; looks like irq handlers to 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * both drivers except the callbacks aren't in_irq(). 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1563cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic void dummy_timer(unsigned long _dum_hcd) 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1565cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = (struct dummy_hcd *) _dum_hcd; 1566cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = dum_hcd->dum; 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp, *tmp; 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 15691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit, total; 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* simplistic model for one frame's bandwidth */ 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 8/*bytes*/ * 12/*packets*/; 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 64/*bytes*/ * 19/*packets*/; 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 15841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Bus speed is 500000 bytes/ms, so use a little less */ 15851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman total = 490000; 15861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 15871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1588cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME if HZ != 1000 this will probably misbehave ... */ 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* look at each urb queued by the host side driver */ 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1597cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum_hcd->udev) { 1598cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_err(dummy_dev(dum_hcd), 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "timer fired with no URBs pending?\n"); 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DUMMY_ENDPOINTS; i++) { 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep_name [i]) 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->ep [i].already_seen = 0; 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsrestart: 1611cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) { 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb; 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 address; 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = NULL; 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int type; 16174d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern int status = -EINPROGRESS; 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb = urbp->urb; 1620eb23105462304fd35571fd0cab1de7aec79a9ec5Alan Stern if (urb->unlinked) 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 1622cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman else if (dum_hcd->rh_state != DUMMY_RH_RUNNING) 1623391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern continue; 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = usb_pipetype (urb->pipe); 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* used up this frame's non-periodic bandwidth? 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME there's infinite bandwidth for control and 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * periodic transfers ... unrealistic. 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (total <= 0 && type == PIPE_BULK) 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* find the gadget's ep for this request (if configured) */ 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address = usb_pipeendpoint (urb->pipe); 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipein (urb->pipe)) 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address |= USB_DIR_IN; 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = find_endpoint(dum, address); 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep) { 16391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set_configuration() disagreement */ 1640cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "no ep configured for urb %p\n", 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb); 16434d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -EPROTO; 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->already_seen) 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 1; 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && urb->error_count) { 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 1; /* a new urb */ 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 0; 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->halted && !ep->setup_stage) { 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: must not be iso! */ 1656cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n", 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.name, urb); 16584d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -EPIPE; 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 16601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME make sure both ends agree on maxpacket */ 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle control requests */ 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && ep->setup_stage) { 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ctrlrequest setup; 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int value = 1; 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds setup = *(struct usb_ctrlrequest*) urb->setup_packet; 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* paranoia, in case of stale queued data */ 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 1673d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "stale req = %p\n", 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req); 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 0; 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver never sees set_address or operations 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * on standard feature flags. some hardware doesn't 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * even expose them. 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 0; 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 0; 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1691cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman value = handle_control_request(dum_hcd, urb, &setup, 16928be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman &status); 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver handles all other requests. block 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * until setup() returns; no reentrancy issues etc. 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value > 0) { 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = dum->driver->setup (&dum->gadget, 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &setup); 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value >= 0) { 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no delays (max 64KB data stage) */ 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = 64*1024; 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto treat_control_like_bulk; 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* error, see below */ 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value < 0) { 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value != -EOPNOTSUPP) 1713d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "setup --> %d\n", 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value); 17164d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -EPIPE; 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length = 0; 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* non-control requests */ 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = total; 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_ISOCHRONOUS: 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * use urb->iso_frame_desc[i]. 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete whether or not ep has requests queued. 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * report random errors, to debug drivers. 17311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 17334d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -ENOSYS; 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_INTERRUPT: 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this almost certainly polls too fast. 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FALLTHROUGH */ 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // case PIPE_BULK: case PIPE_CONTROL: 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds treat_control_like_bulk: 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 17474d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern total = transfer(dum, urb, ep, limit, &status); 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* incomplete transfer? */ 17524d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern if (status == -EINPROGRESS) 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsreturn_urb: 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del (&urbp->urbp_list); 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (urbp); 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep) 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = ep->setup_stage = 0; 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1761cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb); 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 1763cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status); 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1769cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (list_empty(&dum_hcd->urbp_list)) { 1770cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_put_dev(dum_hcd->udev); 1771cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->udev = NULL; 1772cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { 1773391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* want a 1 msec delay here */ 1774cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PORT_C_MASK \ 1783c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern ((USB_PORT_STAT_C_CONNECTION \ 1784c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_ENABLE \ 1785c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_SUSPEND \ 1786c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_OVERCURRENT \ 1787c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_RESET) << 16) 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_status (struct usb_hcd *hcd, char *buf) 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1791cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1793391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern int retval = 0; 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1795cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1797cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 1798541c7d432f76771079e7c295d596ea47cc6a3030Alan Stern if (!HCD_HW_ACCESSIBLE(hcd)) 1799391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern goto done; 1800f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1801cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->resuming && time_after_eq(jiffies, dum_hcd->re_timeout)) { 1802cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 1803cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; 1804cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 1805f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 1806f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1807cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & PORT_C_MASK) != 0) { 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *buf = (1 << 1); 1809cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n", 1810cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status); 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 1; 1812cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED) 1813391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_resume_root_hub (hcd); 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1815391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sterndone: 1816cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 18211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanss_hub_descriptor(struct usb_hub_descriptor *desc) 18221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 18231cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman memset(desc, 0, sizeof *desc); 18241cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->bDescriptorType = 0x2a; 18251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->bDescLength = 12; 18261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->wHubCharacteristics = cpu_to_le16(0x0001); 18271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->bNbrPorts = 1; 18281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/ 18291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->u.ss.DeviceRemovable = 0xffff; 18301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 18311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 18321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic inline void 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldshub_descriptor (struct usb_hub_descriptor *desc) 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset (desc, 0, sizeof *desc); 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescriptorType = 0x29; 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescLength = 9; 1838fd05e720099e8eeddb378305d1a41c1445344b91Al Viro desc->wHubCharacteristics = cpu_to_le16(0x0001); 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bNbrPorts = 1; 1840dbe79bbe9dcb22cb3651c46f18943477141ca452John Youn desc->u.hs.DeviceRemovable[0] = 0xff; 1841dbe79bbe9dcb22cb3651c46f18943477141ca452John Youn desc->u.hs.DeviceRemovable[1] = 0xff; 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_control ( 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 typeReq, 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wValue, 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wIndex, 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf, 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wLength 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 1852cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = 0; 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1856541c7d432f76771079e7c295d596ea47cc6a3030Alan Stern if (!HCD_HW_ACCESSIBLE(hcd)) 1857391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ETIMEDOUT; 1858391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1859cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 1860cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 1861cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (typeReq) { 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearHubFeature: 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearPortFeature: 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 18681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 18691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 18701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_SUSPEND req not " 18711cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 3.0 roothub\n"); 18721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 18731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 1874cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) { 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 20msec resume signaling */ 1876cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->resuming = 1; 1877cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->re_timeout = jiffies + 1878f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern msecs_to_jiffies(20); 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_POWER: 18821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 18831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum_hcd->port_status & USB_PORT_STAT_POWER) 18841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 18851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "power-off\n"); 18861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else 18871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum_hcd->port_status & 18881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SS_PORT_STAT_POWER) 18891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 18901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "power-off\n"); 1891f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1893cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~(1 << wValue); 1894cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubDescriptor: 18981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3 && 18991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (wLength < USB_DT_SS_HUB_SIZE || 19001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman wValue != (USB_DT_SS_HUB << 8))) { 19011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19021cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "Wrong hub descriptor type for " 19031cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB 3.0 roothub.\n"); 19041cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 19051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 19061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) 19071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ss_hub_descriptor((struct usb_hub_descriptor *) buf); 19081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 19091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman hub_descriptor((struct usb_hub_descriptor *) buf); 19101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 19111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubStatus: 1912551509d267905705f6d723e51ec706916f06b859Harvey Harrison *(__le32 *) buf = cpu_to_le32 (0); 19131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 19141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetPortStatus: 19151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (wIndex != 1) 19161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* whoever resets or resumes must GetPortStatus to 19191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete it!! 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1921cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->resuming && 1922cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman time_after_eq(jiffies, dum_hcd->re_timeout)) { 1923cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 1924cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; 19251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1926cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_RESET) != 0 && 1927cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman time_after_eq(jiffies, dum_hcd->re_timeout)) { 1928cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_C_RESET << 16); 1929cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_RESET; 1930cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->dum->pullup) { 1931cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_ENABLE; 19321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 19331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed < HCD_USB3) { 19341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman switch (dum_hcd->dum->gadget.speed) { 19351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_HIGH: 19361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 19371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_HIGH_SPEED; 19381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 19391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_LOW: 19401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->dum->gadget.ep0-> 19411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman maxpacket = 8; 19421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 19431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_LOW_SPEED; 19441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 19451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman default: 19461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->dum->gadget.speed = 19471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SPEED_FULL; 19481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 19491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1953cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 1954cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman ((__le16 *) buf)[0] = cpu_to_le16 (dum_hcd->port_status); 1955cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman ((__le16 *) buf)[1] = cpu_to_le16 (dum_hcd->port_status >> 16); 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetHubFeature: 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetPortFeature: 19611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 19621cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_LINK_STATE: 19631cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 19641cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19651cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_LINK_STATE req not " 19661cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 19671cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 19681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 19691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 19701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * Since this is dummy we don't have an actual link so 19711cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * there is nothing to do for the SET_LINK_STATE cmd 19721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 19731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 19741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_U1_TIMEOUT: 19751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_U2_TIMEOUT: 19761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* TODO: add suspend/resume support! */ 19771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 19781cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_U1/2_TIMEOUT req not " 19801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 19811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 19821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 19831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 19851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Applicable only for USB2.0 hub */ 19861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 19871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_SUSPEND req not " 19891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 3.0 roothub\n"); 19901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 19911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 1992cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->active) { 1993cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_SUSPEND; 1994f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1995f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* HNP would happen here; for now we 1996f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern * assume b_bus_req is always true. 1997f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern */ 1998cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 1999f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (((1 << USB_DEVICE_B_HNP_ENABLE) 2000cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman & dum_hcd->dum->devstatus) != 0) 2001cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20025742b0c95026c817d9c266174ca39a909e8d38caAlan Stern "no HNP yet!\n"); 20031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2005f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern case USB_PORT_FEAT_POWER: 20061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) 20071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= USB_SS_PORT_STAT_POWER; 20081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 20091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_POWER; 2010cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 2011f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern break; 20121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_BH_PORT_RESET: 20131cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Applicable only for USB3.0 hub */ 20141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 20151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_BH_PORT_RESET req not " 20171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 20181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 20191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* FALLS THROUGH */ 20211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_RESET: 2022f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* if it's already enabled, disable */ 20231cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 20241cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 0; 20251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 20261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_SS_PORT_STAT_POWER | 20271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION | 20281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_RESET); 20291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else 20301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE 2031f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_LOW_SPEED 2032f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_HIGH_SPEED); 2033cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman /* 2034cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * We want to reset device status. All but the 2035cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * Self powered feature 2036cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman */ 2037cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->dum->devstatus &= 2038cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman (1 << USB_DEVICE_SELF_POWERED); 20391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 20401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * FIXME USB3.0: what is the correct reset signaling 20411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * interval? Is it still 50msec as for HS? 20421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 2043cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50); 2044f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 20451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 20461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 20471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & 20481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SS_PORT_STAT_POWER) != 0) { 20491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= (1 << wValue); 20501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman set_link_state(dum_hcd); 20511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else 20531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & 20541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_POWER) != 0) { 20551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= (1 << wValue); 20561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman set_link_state(dum_hcd); 20571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case GetPortErrorCount: 20611cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 20621cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20631cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "GetPortErrorCount req not " 20641cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 20651cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 20661cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20671cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* We'll always return 0 since this is a dummy hub */ 20681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman *(__le32 *) buf = cpu_to_le32(0); 20691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case SetHubDepth: 20711cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 20721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "SetHubDepth req not supported for " 20741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB 2.0 roothub\n"); 20751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 2079cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "hub control req%04x v%04x i%04x l%d\n", 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds typeReq, wValue, wIndex, wLength); 20821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanerror: 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* "protocol stall" on error */ 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2086cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 2087685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern 2088cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & PORT_C_MASK) != 0) 2089685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (hcd); 20901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 20911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20930c0382e32d46f606951010b202382be14d180a17Alan Sternstatic int dummy_bus_suspend (struct usb_hcd *hcd) 2094391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2095cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 2096391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2097441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); 20983cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern 2099cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irq(&dum_hcd->dum->lock); 2100cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state = DUMMY_RH_SUSPENDED; 2101cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 21023cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd->state = HC_STATE_SUSPENDED; 2103cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irq(&dum_hcd->dum->lock); 2104391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 2105391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 2106391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 21070c0382e32d46f606951010b202382be14d180a17Alan Sternstatic int dummy_bus_resume (struct usb_hcd *hcd) 2108391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2109cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 21103cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern int rc = 0; 21113cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern 2112441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); 2113391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2114cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irq(&dum_hcd->dum->lock); 2115541c7d432f76771079e7c295d596ea47cc6a3030Alan Stern if (!HCD_HW_ACCESSIBLE(hcd)) { 2116cfa59dab27d1b282886e7772a8f9548236883892Alan Stern rc = -ESHUTDOWN; 21173cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern } else { 2118cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state = DUMMY_RH_RUNNING; 2119cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 2120cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!list_empty(&dum_hcd->urbp_list)) 2121cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies); 21223cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd->state = HC_STATE_RUNNING; 21233cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern } 2124cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irq(&dum_hcd->dum->lock); 21253cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern return rc; 2126391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline ssize_t 21311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsshow_urb (char *buf, size_t size, struct urb *urb) 21321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ep = usb_pipeendpoint (urb->pipe); 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return snprintf (buf, size, 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "urb/%p %s ep%d%s%s len %d/%d\n", 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb, 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; 21391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (urb->dev->speed) { 21407c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_SPEED_LOW: 21417c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "ls"; 21427c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 21437c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_SPEED_FULL: 21447c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "fs"; 21457c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 21467c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_SPEED_HIGH: 21477c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "hs"; 21487c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 21491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 21501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman s = "ss"; 21511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 21527c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman default: 21537c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "?"; 21547c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 21551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s; }), 21561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", 21571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; \ 21581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { \ 21597c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case PIPE_CONTROL: \ 21607c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = ""; \ 21617c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 21627c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case PIPE_BULK: \ 21637c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "-bulk"; \ 21647c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 21657c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case PIPE_INTERRUPT: \ 21667c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "-int"; \ 21677c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 21687c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman default: \ 21697c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "-iso"; \ 21707c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s;}), 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length, urb->transfer_buffer_length); 21731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 217610523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_urbs (struct device *dev, struct device_attribute *attr, char *buf) 21771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd = dev_get_drvdata (dev); 2179cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 21801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 21811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t size = 0; 21821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 21831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2184cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 2185cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) { 21861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t temp; 21871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); 21891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += temp; 21901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size += temp; 21911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2192cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 21931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return size; 21951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); 21971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic int dummy_start_ss(struct dummy_hcd *dum_hcd) 21991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 22001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman init_timer(&dum_hcd->timer); 22011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->timer.function = dummy_timer; 22021cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->timer.data = (unsigned long)dum_hcd; 22031cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->rh_state = DUMMY_RH_RUNNING; 22041cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman INIT_LIST_HEAD(&dum_hcd->urbp_list); 22051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET; 22061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING; 22071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1; 22081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman#ifdef CONFIG_USB_OTG 22091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->self.otg_port = 1; 22101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman#endif 22111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 22121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 22131cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ 22141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); 22151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 22161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2217cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int dummy_start(struct usb_hcd *hcd) 22181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2219cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 22201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 22221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MASTER side init ... we emulate a root hub that'll only ever 22231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * talk to one device (the slave side). Also appears in sysfs, 22241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * just like more familiar pci-based HCDs. 22251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 22261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!usb_hcd_is_primary_hcd(hcd)) 22271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return dummy_start_ss(dum_hcd); 22281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2229cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_init(&dum_hcd->dum->lock); 2230cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman init_timer(&dum_hcd->timer); 2231cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->timer.function = dummy_timer; 2232cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->timer.data = (unsigned long)dum_hcd; 2233cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state = DUMMY_RH_RUNNING; 22341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2235cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman INIT_LIST_HEAD(&dum_hcd->urbp_list); 22361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2237caf29f62655e7aa57996821535d11fa3b0537b6bAlan Stern hcd->power_budget = POWER_BUDGET; 22381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hcd->state = HC_STATE_RUNNING; 2239685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern hcd->uses_new_polling = 1; 22401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22415742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#ifdef CONFIG_USB_OTG 22425742b0c95026c817d9c266174ca39a909e8d38caAlan Stern hcd->self.otg_port = 1; 22435742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#endif 22445742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 22451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ 2246cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); 22471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dummy_stop (struct usb_hcd *hcd) 22501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 22521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2253cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum = (hcd_to_dummy_hcd(hcd))->dum; 2254cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); 2255cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_gadget_unregister_driver(dum->driver); 2256cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); 22571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 22601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_h_get_frame (struct usb_hcd *hcd) 22621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dummy_g_get_frame (NULL); 22641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2266cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int dummy_setup(struct usb_hcd *hcd) 2267cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman{ 226814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior hcd->self.sg_tablesize = ~0; 2269cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (usb_hcd_is_primary_hcd(hcd)) { 2270cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman the_controller.hs_hcd = hcd_to_dummy_hcd(hcd); 2271cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman the_controller.hs_hcd->dum = &the_controller; 22721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 22731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * Mark the first roothub as being USB 2.0. 22741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * The USB 3.0 roothub will be registered later by 22751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * dummy_hcd_probe() 22761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 2277cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hcd->speed = HCD_USB2; 2278cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hcd->self.root_hub->speed = USB_SPEED_HIGH; 22791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 22801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.ss_hcd = hcd_to_dummy_hcd(hcd); 22811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.ss_hcd->dum = &the_controller; 22821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman hcd->speed = HCD_USB3; 22831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman hcd->self.root_hub->speed = USB_SPEED_SUPER; 2284cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } 2285cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return 0; 2286cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman} 2287cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 22881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman/* Change a group of bulk endpoints to support multiple stream IDs */ 22891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanint dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, 22901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct usb_host_endpoint **eps, unsigned int num_eps, 22911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman unsigned int num_streams, gfp_t mem_flags) 22921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 22931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) 22941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), 22951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "%s() - ERROR! Not supported for USB2.0 roothub\n", 22961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman __func__); 22971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 22981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 22991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman/* Reverts a group of bulk endpoints back to not using stream IDs. */ 23011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanint dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev, 23021cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct usb_host_endpoint **eps, unsigned int num_eps, 23031cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman gfp_t mem_flags) 23041cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 23051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) 23061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), 23071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "%s() - ERROR! Not supported for USB2.0 roothub\n", 23081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman __func__); 23091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 23101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 23111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic struct hc_driver dummy_hcd = { 23131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .description = (char *) driver_name, 23141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .product_desc = "Dummy host controller", 2315cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman .hcd_priv_size = sizeof(struct dummy_hcd), 23161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman .flags = HCD_USB3 | HCD_SHARED, 23181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2319cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman .reset = dummy_setup, 23201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = dummy_start, 23211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = dummy_stop, 23221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_enqueue = dummy_urb_enqueue, 23241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_dequeue = dummy_urb_dequeue, 23251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame_number = dummy_h_get_frame, 23271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_status_data = dummy_hub_status, 23291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_control = dummy_hub_control, 23300c0382e32d46f606951010b202382be14d180a17Alan Stern .bus_suspend = dummy_bus_suspend, 23310c0382e32d46f606951010b202382be14d180a17Alan Stern .bus_resume = dummy_bus_resume, 23321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman .alloc_streams = dummy_alloc_streams, 23341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman .free_streams = dummy_free_streams, 23351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 23361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23378364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_hcd_probe(struct platform_device *pdev) 23381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2339cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct usb_hcd *hs_hcd; 23401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct usb_hcd *ss_hcd; 23411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 23421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23438364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); 23441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!mod_data.is_super_speed) 23461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd.flags = HCD_USB2; 2347cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev)); 2348cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!hs_hcd) 23491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 2350cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hs_hcd->has_tt = 1; 23511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2352cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman retval = usb_add_hcd(hs_hcd, 0, 0); 23531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval != 0) { 2354cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_put_hcd(hs_hcd); 23551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return retval; 23561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (mod_data.is_super_speed) { 23591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev, 23601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_name(&pdev->dev), hs_hcd); 23611cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!ss_hcd) { 23621cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman retval = -ENOMEM; 23631cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto dealloc_usb2_hcd; 23641cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 23651cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23661cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman retval = usb_add_hcd(ss_hcd, 0, 0); 23671cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (retval) 23681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto put_usb3_hcd; 23691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 23701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 23711cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanput_usb3_hcd: 23731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_put_hcd(ss_hcd); 23741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmandealloc_usb2_hcd: 23751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_put_hcd(hs_hcd); 23761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.hs_hcd = the_controller.ss_hcd = NULL; 23771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 23781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2380cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int dummy_hcd_remove(struct platform_device *pdev) 23811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2382cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum; 2383cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 2384cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum; 23851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->ss_hcd) { 23871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); 23881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_put_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); 23891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 23901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2391cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); 2392cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); 23931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2394cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman the_controller.hs_hcd = NULL; 23951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.ss_hcd = NULL; 23961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2397d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 23981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24008364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state) 2401391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2402391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 2403cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 24043cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern int rc = 0; 2405391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2406441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&pdev->dev, "%s\n", __func__); 2407391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 24083cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd = platform_get_drvdata (pdev); 2409cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 2410cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { 24113cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern dev_warn(&pdev->dev, "Root hub isn't suspended!\n"); 24123cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern rc = -EBUSY; 24133cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern } else 24143cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 24153cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern return rc; 2416391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 2417391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 24188364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_hcd_resume (struct platform_device *pdev) 2419391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2420391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 2421391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2422441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&pdev->dev, "%s\n", __func__); 2423391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 24243cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd = platform_get_drvdata (pdev); 24253cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 2426391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_poll_rh_status (hcd); 2427391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 2428391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 2429391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 24303ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell Kingstatic struct platform_driver dummy_hcd_driver = { 2431d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_hcd_probe, 2432d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_hcd_remove, 2433391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_hcd_suspend, 2434391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_hcd_resume, 24353ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .driver = { 24363ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .name = (char *) driver_name, 24373ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .owner = THIS_MODULE, 24383ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King }, 2439d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 24401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2441d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/*-------------------------------------------------------------------------*/ 24421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2443a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternstatic struct platform_device *the_udc_pdev; 2444a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternstatic struct platform_device *the_hcd_pdev; 24451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init (void) 24471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2448a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern int retval = -ENOMEM; 24491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_disabled ()) 24511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2452d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 24537eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman if (!mod_data.is_high_speed && mod_data.is_super_speed) 24547eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman return -EINVAL; 24557eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman 2456a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern the_hcd_pdev = platform_device_alloc(driver_name, -1); 2457a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern if (!the_hcd_pdev) 24581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 2459a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern the_udc_pdev = platform_device_alloc(gadget_name, -1); 2460a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern if (!the_udc_pdev) 2461a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_alloc_udc; 2462d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2463a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_driver_register(&dummy_hcd_driver); 2464a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern if (retval < 0) 2465a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_register_hcd_driver; 2466a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_driver_register(&dummy_udc_driver); 2467d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2468d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern goto err_register_udc_driver; 2469d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2470a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_device_add(the_hcd_pdev); 2471d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2472a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_add_hcd; 24731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!the_controller.hs_hcd || 24741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (!the_controller.ss_hcd && mod_data.is_super_speed)) { 2475865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior /* 2476865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * The hcd was added successfully but its probe function failed 2477865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * for some reason. 2478865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior */ 2479865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior retval = -EINVAL; 2480865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior goto err_add_udc; 2481865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior } 2482a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_device_add(the_udc_pdev); 2483d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2484a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_add_udc; 2485865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior if (!platform_get_drvdata(the_udc_pdev)) { 2486865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior /* 2487865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * The udc was added successfully but its probe function failed 2488865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * for some reason. 2489865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior */ 2490865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior retval = -EINVAL; 2491865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior goto err_probe_udc; 2492865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior } 2493d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return retval; 2494d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2495865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewiorerr_probe_udc: 2496865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior platform_device_del(the_udc_pdev); 2497a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_add_udc: 2498a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_del(the_hcd_pdev); 2499a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_add_hcd: 2500a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_udc_driver); 2501d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternerr_register_udc_driver: 2502a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_hcd_driver); 2503a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_register_hcd_driver: 2504a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_put(the_udc_pdev); 2505a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_alloc_udc: 2506a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_put(the_hcd_pdev); 25071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 25081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init (init); 25101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit cleanup (void) 25121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2513a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_unregister(the_udc_pdev); 2514a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_unregister(the_hcd_pdev); 2515a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_udc_driver); 2516a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_hcd_driver); 25171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit (cleanup); 2519