dummy_hcd.c revision a04ce20d9f5e9484ed3879e1290bd05933cbbe2a
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> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/irq.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/unaligned.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_DESC "USB Host+Gadget Emulator" 51391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#define DRIVER_VERSION "02 May 2005" 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 53caf29f62655e7aa57996821535d11fa3b0537b6bAlan Stern#define POWER_BUDGET 500 /* in mA; use 8 for low-power port testing */ 54caf29f62655e7aa57996821535d11fa3b0537b6bAlan Stern 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char driver_name [] = "dummy_hcd"; 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char driver_desc [] = "USB Host+Gadget Emulator"; 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char gadget_name [] = "dummy_udc"; 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION (DRIVER_DESC); 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR ("David Brownell"); 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE ("GPL"); 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 641cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstruct dummy_hcd_module_parameters { 651cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman bool is_super_speed; 667eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman bool is_high_speed; 671cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman}; 681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic struct dummy_hcd_module_parameters mod_data = { 707eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman .is_super_speed = false, 717eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman .is_high_speed = true, 721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman}; 731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanmodule_param_named(is_super_speed, mod_data.is_super_speed, bool, S_IRUGO); 741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana BrokhmanMODULE_PARM_DESC(is_super_speed, "true to simulate SuperSpeed connection"); 757eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhmanmodule_param_named(is_high_speed, mod_data.is_high_speed, bool, S_IRUGO); 767eca4c5a8b73f22ad16ad6e76b901351732355daTatyana BrokhmanMODULE_PARM_DESC(is_high_speed, "true to simulate HighSpeed connection"); 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* gadget side driver data structres */ 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy_ep { 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head queue; 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long last_io; /* jiffies timestamp */ 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget *gadget; 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct usb_endpoint_descriptor *desc; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ep ep; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned halted : 1; 87851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern unsigned wedged : 1; 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned already_seen : 1; 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned setup_stage : 1; 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy_request { 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head queue; /* ep's requests */ 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_request req; 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy_ep *usb_ep_to_dummy_ep (struct usb_ep *_ep) 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (_ep, struct dummy_ep, ep); 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy_request *usb_request_to_dummy_request 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct usb_request *_req) 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (_req, struct dummy_request, req); 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Every device has ep0 for control requests, plus up to 30 more endpoints, 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in one of two types: 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Configurable: direction (in/out), type (bulk, iso, etc), and endpoint 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * number can be changed. Names like "ep-a" are used for this type. 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Fixed Function: in other cases. some characteristics may be mutable; 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that'd be hardware-specific. Names like "ep12out-bulk" are used. 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Gadget drivers are responsible for not setting up conflicting endpoint 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * configurations, illegal or unsupported packet lengths, and so on. 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char ep0name [] = "ep0"; 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char *const ep_name [] = { 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep0name, /* everyone has ep0 */ 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* act like a net2280: high speed, six configurable endpoints */ 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep-a", "ep-b", "ep-c", "ep-d", "ep-e", "ep-f", 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* or like pxa250: fifteen fixed function endpoints */ 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int", 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int", 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso", 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep15in-int", 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* or like sa1100: two fixed function endpoints */ 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep1out-bulk", "ep2in-bulk", 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 14152950ed40dc97456209979af1d8f51b63cf6dcabTobias Klauser#define DUMMY_ENDPOINTS ARRAY_SIZE(ep_name) 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 143d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/*-------------------------------------------------------------------------*/ 144d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FIFO_SIZE 64 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct urbp { 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb; 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head urbp_list; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 152391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 153391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternenum dummy_rh_state { 154391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_RESET, 155391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_SUSPENDED, 156391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_RUNNING 157391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern}; 158391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 159cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstruct dummy_hcd { 160cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum; 161cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman enum dummy_rh_state rh_state; 162cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct timer_list timer; 163cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman u32 port_status; 164cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman u32 old_status; 165cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned long re_timeout; 166cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 167cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct usb_device *udev; 168cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct list_head urbp_list; 169cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 170cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned active:1; 171cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned old_active:1; 172cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned resuming:1; 173cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman}; 174cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy { 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SLAVE/GADGET side support 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep ep [DUMMY_ENDPOINTS]; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int address; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget gadget; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget_driver *driver; 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request fifo_req; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 fifo_buf [FIFO_SIZE]; 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 devstatus; 188391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern unsigned udc_suspended:1; 189f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned pullup:1; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MASTER/HOST side support 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 194cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *hs_hcd; 1951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct dummy_hcd *ss_hcd; 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 198cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd) 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 200cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return (struct dummy_hcd *) (hcd->hcd_priv); 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 203cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct usb_hcd *dummy_hcd_to_hcd(struct dummy_hcd *dum) 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of((void *) dum, struct usb_hcd, hcd_priv); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 208cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct device *dummy_dev(struct dummy_hcd *dum) 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 210cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return dummy_hcd_to_hcd(dum)->self.controller; 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 213d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic inline struct device *udc_dev (struct dummy *dum) 214d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 215d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return dum->gadget.dev.parent; 216d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 217d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *ep_to_dummy (struct dummy_ep *ep) 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (ep->gadget, struct dummy, gadget); 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 223cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget) 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 225cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = container_of(gadget, struct dummy, gadget); 2261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->gadget.speed == USB_SPEED_SUPER) 2271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return dum->ss_hcd; 2281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 2291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return dum->hs_hcd; 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *gadget_dev_to_dummy (struct device *dev) 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (dev, struct dummy, gadget.dev); 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 237cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic struct dummy the_controller; 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 241f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* SLAVE/GADGET SIDE UTILITY ROUTINES */ 242f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 243f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* called with spinlock held */ 244f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic void nuke (struct dummy *dum, struct dummy_ep *ep) 245f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 246f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern while (!list_empty (&ep->queue)) { 247f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy_request *req; 248f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 249f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req = list_entry (ep->queue.next, struct dummy_request, queue); 250f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern list_del_init (&req->queue); 251f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req->req.status = -ESHUTDOWN; 252f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 253f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock (&dum->lock); 254f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req->req.complete (&ep->ep, &req->req); 255f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock (&dum->lock); 256f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 257f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 258f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 259f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* caller must hold lock */ 260f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic void 261f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstop_activity (struct dummy *dum) 262f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 263f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy_ep *ep; 264f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 265f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* prevent any more requests */ 266f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->address = 0; 267f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 268f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* The timer is left running so that outstanding URBs can fail */ 269f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 270f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* nuke any pending requests first, so driver i/o is quiesced */ 271f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern list_for_each_entry (ep, &dum->gadget.ep_list, ep.ep_list) 272f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern nuke (dum, ep); 273f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 274f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* driver now does any non-usb quiescing necessary */ 275f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 276f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 2771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman/** 2781cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * set_link_state_by_speed() - Sets the current state of the link according to 2791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * the hcd speed 2801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * @dum_hcd: pointer to the dummy_hcd structure to update the link state for 2811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * 2821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * This function updates the port_status according to the link state and the 2831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * speed of the hcd. 2841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 2851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic void set_link_state_by_speed(struct dummy_hcd *dum_hcd) 2861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 2871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct dummy *dum = dum_hcd->dum; 2881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3) { 2901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) == 0) { 2911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 0; 2921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else if (!dum->pullup || dum->udc_suspended) { 2931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* UDC suspend must cause a disconnect */ 2941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | 2951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_ENABLE); 2961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 2971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) != 0) 2981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 2991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 3011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* device is connected and not suspended */ 3021cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_CONNECTION | 3031cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_SPEED_5GBPS) ; 3041cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) == 0) 3061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & 3091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_ENABLE) == 1 && 3101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (dum_hcd->port_status & 3111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SS_PORT_LS_U0) == 1 && 3121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->rh_state != DUMMY_RH_SUSPENDED) 3131cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->active = 1; 3141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 3151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 3161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) { 3171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 0; 3181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else if (!dum->pullup || dum->udc_suspended) { 3191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* UDC suspend must cause a disconnect */ 3201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | 3211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_ENABLE | 3221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_LOW_SPEED | 3231cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_HIGH_SPEED | 3241cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_SUSPEND); 3251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) != 0) 3271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 3301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_CONNECTION; 3311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) == 0) 3331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0) 3361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; 3371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else if ((dum_hcd->port_status & 3381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_SUSPEND) == 0 && 3391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->rh_state != DUMMY_RH_SUSPENDED) 3401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->active = 1; 3411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 3421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 3431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 3441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 345f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* caller must hold lock */ 346cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic void set_link_state(struct dummy_hcd *dum_hcd) 347f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 348cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = dum_hcd->dum; 349cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 350cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->active = 0; 3511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->pullup) 3521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 && 3531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->gadget.speed != USB_SPEED_SUPER) || 3541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (dummy_hcd_to_hcd(dum_hcd)->speed != HCD_USB3 && 3551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->gadget.speed == USB_SPEED_SUPER)) 3561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return; 3571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 3581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman set_link_state_by_speed(dum_hcd); 359f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 360cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 || 361cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->active) 362cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->resuming = 0; 363f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 3641cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* if !connected or reset */ 365cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 || 366cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) { 3671cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 3681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * We're connected and not reset (reset occurred now), 3691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * and driver attached - disconnect! 3701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 371cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 && 3721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 && 3731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver) { 3741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman stop_activity(dum); 3751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_unlock(&dum->lock); 3761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver->disconnect(&dum->gadget); 3771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_lock(&dum->lock); 378f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 379cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } else if (dum_hcd->active != dum_hcd->old_active) { 380cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->old_active && dum->driver->suspend) { 3811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_unlock(&dum->lock); 3821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver->suspend(&dum->gadget); 3831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_lock(&dum->lock); 3841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else if (!dum_hcd->old_active && dum->driver->resume) { 3851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_unlock(&dum->lock); 3861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver->resume(&dum->gadget); 3871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_lock(&dum->lock); 388f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 389f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 390f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 391cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->old_status = dum_hcd->port_status; 392cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->old_active = dum_hcd->active; 393f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 394f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 395f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/*-------------------------------------------------------------------------*/ 396f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* SLAVE/GADGET SIDE DRIVER 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This only tracks gadget state. All the work is done when the host 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * side tries some (emulated) i/o operation. Real device controller 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * drivers would do real i/o using dma, fifos, irqs, timers, etc. 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define is_enabled(dum) \ 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (dum->port_status & USB_PORT_STAT_ENABLE) 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 411cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned max; 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !desc || ep->desc || _ep->name == ep0name 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || desc->bDescriptorType != USB_DT_ENDPOINT) 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 421cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum->driver) 422cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return -ESHUTDOWN; 423719e52cbc7b826fae9501f3b86b8cbc25a4c5268Sebastian Andrzej Siewior 424719e52cbc7b826fae9501f3b86b8cbc25a4c5268Sebastian Andrzej Siewior dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 425cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!is_enabled(dum_hcd)) 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 427cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 428cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman /* 429cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the 430cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * maximum packet size. 4311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * For SS devices the wMaxPacketSize is limited by 1024. 432cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman */ 43329cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto max = usb_endpoint_maxp(desc) & 0x7ff; 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* drivers must not request bad settings, since lower levels 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (hardware or its drivers) may not check. some endpoints 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can't do iso, many have maxpacket limitations, etc. 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since this "hardware" driver is here to help debugging, we 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * have some extra sanity checks. (there could be more though, 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * especially for "ep9out" style fixed function ones.) 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EINVAL; 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (desc->bmAttributes & 0x03) { 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_BULK: 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-iso") 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || strstr (ep->ep.name, "-int")) { 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 4511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 4521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (max == 1024) 4531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 4541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto done; 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max == 512) 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4589063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil goto done; 4599063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil case USB_SPEED_FULL: 4609063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil if (max == 8 || max == 16 || max == 32 || max == 64) 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we'll fake any legal size */ 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4639063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil /* save a return statement */ 4649063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil default: 4659063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil goto done; 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_INT: 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-iso")) /* bulk is ok */ 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware might not handle all packet sizes */ 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 4731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1024) 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 64) 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 8) 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_ISOC: 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-bulk") 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || strstr (ep->ep.name, "-int")) 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware might not handle all packet sizes */ 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 4941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1024) 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1023) 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* few chips support control except on ep0 */ 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _ep->maxpacket = max; 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = desc; 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 515d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d\n", 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _ep->name, 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bEndpointAddress & 0x0f, 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *val; 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (desc->bmAttributes & 0x03) { 5217c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_ENDPOINT_XFER_BULK: 5227c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "bulk"; 5237c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5247c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_ENDPOINT_XFER_ISOC: 5257c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "iso"; 5267c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5277c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_ENDPOINT_XFER_INT: 5287c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "intr"; 5297c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5307c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman default: 5317c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "ctrl"; 5327c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; val; }), 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds max); 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* at this point real hardware should be NAKing transfers 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to that endpoint, until a buffer is queued to it. 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 539851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern ep->halted = ep->wedged = 0; 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdone: 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_disable (struct usb_ep *_ep) 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !ep->desc || _ep->name == ep0name) 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = NULL; 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nuke (dum, ep); 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 563d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "disabled %s\n", _ep->name); 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_request * 56855016f10e31bb15b85d8c500f979dfdceb37d548Al Virodummy_alloc_request (struct usb_ep *_ep, gfp_t mem_flags) 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep) 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5777039f4224d4e40b06308d5c1a97427af1a142459Eric Sesterhenn req = kzalloc(sizeof(*req), mem_flags); 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!req) 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&req->queue); 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &req->req; 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_free_request (struct usb_ep *_ep, struct usb_request *_req) 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = usb_request_to_dummy_request (_req); 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds WARN_ON (!list_empty (&req->queue)); 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (req); 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfifo_complete (struct usb_ep *ep, struct usb_request *req) 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 6055db539e49fc7471e23bf3c94ca304f008cb7b7f3Olav Kongasdummy_queue (struct usb_ep *_ep, struct usb_request *_req, 60655016f10e31bb15b85d8c500f979dfdceb37d548Al Viro gfp_t mem_flags) 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 611cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = usb_request_to_dummy_request (_req); 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_req || !list_empty (&req->queue) || !_req->complete) 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || (!ep->desc && _ep->name != ep0name)) 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 623719e52cbc7b826fae9501f3b86b8cbc25a4c5268Sebastian Andrzej Siewior dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 624cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum->driver || !is_enabled(dum_hcd)) 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 628d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, _req, _ep->name, _req->length, _req->buf); 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -EINPROGRESS; 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = 0; 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* implement an emulated single-request FIFO */ 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&dum->fifo_req.queue) && 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&ep->queue) && 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->length <= FIFO_SIZE) { 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = &dum->fifo_req; 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req = *_req; 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.buf = dum->fifo_buf; 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy (dum->fifo_buf, _req->buf, _req->length); 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.context = dum; 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete = fifo_complete; 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 648c728df70ab0dd59b8ccdc3c611ea88925e6697dbDavid Brownell list_add_tail(&req->queue, &ep->queue); 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = _req->length; 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = 0; 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 654c728df70ab0dd59b8ccdc3c611ea88925e6697dbDavid Brownell } else 655c728df70ab0dd59b8ccdc3c611ea88925e6697dbDavid Brownell list_add_tail(&req->queue, &ep->queue); 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware would likely enable transfers here, in case 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it'd been left NAKing. 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = -EINVAL; 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req = NULL; 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !_req) 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 680b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern local_irq_save (flags); 681b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern spin_lock (&dum->lock); 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (&req->req == _req) { 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -ECONNRESET; 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 690b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern spin_unlock (&dum->lock); 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval == 0) { 693d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "dequeued req %p from %s, len %d buf %p\n", 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req, _ep->name, _req->length, _req->buf); 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 698b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern local_irq_restore (flags); 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 703851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sterndummy_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged) 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep) 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!value) 715851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern ep->halted = ep->wedged = 0; 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !list_empty (&ep->queue)) 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EAGAIN; 719851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern else { 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 1; 721851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern if (wedged) 722851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern ep->wedged = 1; 723851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern } 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME clear emulated data toggle too */ 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 728851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sternstatic int 729851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sterndummy_set_halt(struct usb_ep *_ep, int value) 730851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern{ 731851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern return dummy_set_halt_and_wedge(_ep, value, 0); 732851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern} 733851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern 734851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sternstatic int dummy_set_wedge(struct usb_ep *_ep) 735851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern{ 736851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern if (!_ep || _ep->name == ep0name) 737851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern return -EINVAL; 738851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern return dummy_set_halt_and_wedge(_ep, 1, 1); 739851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern} 740851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_ep_ops dummy_ep_ops = { 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .enable = dummy_enable, 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disable = dummy_disable, 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .alloc_request = dummy_alloc_request, 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .free_request = dummy_free_request, 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .queue = dummy_queue, 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .dequeue = dummy_dequeue, 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_halt = dummy_set_halt, 752851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern .set_wedge = dummy_set_wedge, 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* there are both host and device side versions of this call ... */ 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_g_get_frame (struct usb_gadget *_gadget) 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timeval tv; 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_gettimeofday (&tv); 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tv.tv_usec / 1000; 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_wakeup (struct usb_gadget *_gadget) 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 768cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 770cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = gadget_to_dummy_hcd(_gadget); 771cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!(dum_hcd->dum->devstatus & ((1 << USB_DEVICE_B_HNP_ENABLE) 7725742b0c95026c817d9c266174ca39a909e8d38caAlan Stern | (1 << USB_DEVICE_REMOTE_WAKEUP)))) 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 774cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0) 775391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ENOLINK; 776cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 && 777cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state != DUMMY_RH_SUSPENDED) 778391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -EIO; 779391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 780391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* FIXME: What if the root hub is suspended but the port isn't? */ 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* hub notices our request, issues downstream resume, etc */ 783cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->resuming = 1; 784cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->re_timeout = jiffies + msecs_to_jiffies(20); 785cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dummy_hcd_to_hcd(dum_hcd)->rh_timer, dum_hcd->re_timeout); 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 793cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum = (gadget_to_dummy_hcd(_gadget))->dum; 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value) 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 801b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewiorstatic void dummy_udc_udpate_ep0(struct dummy *dum) 802b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior{ 803c688419141ad6134d7973fcf182e3719e98d7491Sebastian Andrzej Siewior if (dum->gadget.speed == USB_SPEED_SUPER) 804b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->ep[0].ep.maxpacket = 9; 805c688419141ad6134d7973fcf182e3719e98d7491Sebastian Andrzej Siewior else 806b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->ep[0].ep.maxpacket = 64; 807b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior} 808b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 809f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic int dummy_pullup (struct usb_gadget *_gadget, int value) 810f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 811d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior struct dummy_hcd *dum_hcd; 812f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy *dum; 813f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned long flags; 814f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 815b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum = gadget_dev_to_dummy(&_gadget->dev); 816b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 817b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior if (value && dum->driver) { 818b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior if (mod_data.is_super_speed) 8197177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz dum->gadget.speed = dum->driver->max_speed; 820b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior else if (mod_data.is_high_speed) 821b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, 8227177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz dum->driver->max_speed); 823b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior else 824b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->gadget.speed = USB_SPEED_FULL; 825b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dummy_udc_udpate_ep0(dum); 826b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 8277177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (dum->gadget.speed < dum->driver->max_speed) 828b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dev_dbg(udc_dev(dum), "This device can perform faster" 8297177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz " if you connect it to a %s port...\n", 8307177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz usb_speed_string(dum->driver->max_speed)); 831b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior } 832d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior dum_hcd = gadget_to_dummy_hcd(_gadget); 833d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior 834f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock_irqsave (&dum->lock, flags); 835f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = (value != 0); 836d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior set_link_state(dum_hcd); 837f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock_irqrestore (&dum->lock, flags); 838b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 839d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); 840f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern return 0; 841f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 842f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 843aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_start(struct usb_gadget *g, 844aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver); 845aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_stop(struct usb_gadget *g, 846aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver); 8470f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_gadget_ops dummy_ops = { 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame = dummy_g_get_frame, 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .wakeup = dummy_wakeup, 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_selfpowered = dummy_set_selfpowered, 852f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern .pullup = dummy_pullup, 853aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior .udc_start = dummy_udc_start, 854aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior .udc_stop = dummy_udc_stop, 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* "function" sysfs attribute */ 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 86110523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_function (struct device *dev, struct device_attribute *attr, char *buf) 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = gadget_dev_to_dummy (dev); 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver || !dum->driver->function) 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 869cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Sternstatic DEVICE_ATTR (function, S_IRUGO, show_function, NULL); 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver registration/unregistration. 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is basically hardware-specific; there's usually only one real USB 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * device (not host) controller since that's how USB devices are intended 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to work. So most implementations of these api calls will rely on the 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fact that only one driver will ever bind to the hardware. But curious 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hardware can be built with discrete components, so the gadget API doesn't 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * require that assumption. 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * For this emulator, it might be convenient to create a usb slave device 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for each driver that registers: just add to a big root hub. 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 887aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_start(struct usb_gadget *g, 888aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver) 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 890aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); 891aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy *dum = dum_hcd->dum; 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8937177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (driver->max_speed == USB_SPEED_UNKNOWN) 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SLAVE side init ... the layer above hardware, which 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can't enumerate without help from the driver we're binding. 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9005742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus = 0; 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = driver; 904d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 909aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_stop(struct usb_gadget *g, 910aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver) 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 912aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); 913aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy *dum = dum_hcd->dum; 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 915d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = NULL; 9192542787430fc46b4e07e0da4c6ec80ed230032e5Sebastian Andrzej Siewior 9202542787430fc46b4e07e0da4c6ec80ed230032e5Sebastian Andrzej Siewior dummy_pullup(&dum->gadget, 0); 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_enabled 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 926d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/* The gadget structure is stored inside the hcd structure and will be 927d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern * released along with it. */ 928d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic void 929d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sterndummy_gadget_release (struct device *dev) 930d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 931cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return; 932d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 933d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9340fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewiorstatic void init_dummy_udc_hw(struct dummy *dum) 9350fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior{ 9360fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior int i; 9370fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9380fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior INIT_LIST_HEAD(&dum->gadget.ep_list); 9390fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior for (i = 0; i < DUMMY_ENDPOINTS; i++) { 9400fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior struct dummy_ep *ep = &dum->ep[i]; 9410fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9420fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior if (!ep_name[i]) 9430fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior break; 9440fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->ep.name = ep_name[i]; 9450fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->ep.ops = &dummy_ep_ops; 9460fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior list_add_tail(&ep->ep.ep_list, &dum->gadget.ep_list); 9470fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->halted = ep->wedged = ep->already_seen = 9480fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->setup_stage = 0; 9490fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->ep.maxpacket = ~0; 950c688419141ad6134d7973fcf182e3719e98d7491Sebastian Andrzej Siewior ep->ep.max_streams = 16; 9510fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->last_io = jiffies; 9520fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->gadget = &dum->gadget; 9530fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->desc = NULL; 9540fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior INIT_LIST_HEAD(&ep->queue); 9550fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior } 9560fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9570fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior dum->gadget.ep0 = &dum->ep[0].ep; 9580fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior list_del_init(&dum->ep[0].ep.ep_list); 9590fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior INIT_LIST_HEAD(&dum->fifo_req.queue); 960f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior 961f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior#ifdef CONFIG_USB_OTG 962f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior dum->gadget.is_otg = 1; 963f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior#endif 9640fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior} 9650fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9668364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_udc_probe (struct platform_device *pdev) 967d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 968cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = &the_controller; 969d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern int rc; 970d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 971d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.name = gadget_name; 972d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.ops = &dummy_ops; 973d327ab5b6d660d6fe22b073b743fde1668e593bbMichal Nazarewicz dum->gadget.max_speed = USB_SPEED_SUPER; 974d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9750031a06e2f07ab0d1bc98c31dbb6801f95f4bf01Kay Sievers dev_set_name(&dum->gadget.dev, "gadget"); 9768364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern dum->gadget.dev.parent = &pdev->dev; 977d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.dev.release = dummy_gadget_release; 978d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern rc = device_register (&dum->gadget.dev); 97975d87cdf3cefd2744fabd3f2a558c49cdf36238bRahul Ruikar if (rc < 0) { 98075d87cdf3cefd2744fabd3f2a558c49cdf36238bRahul Ruikar put_device(&dum->gadget.dev); 981d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 98275d87cdf3cefd2744fabd3f2a558c49cdf36238bRahul Ruikar } 983d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9840fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior init_dummy_udc_hw(dum); 9850fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9860f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget); 9870f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior if (rc < 0) 9880f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior goto err_udc; 9890f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 990efd54a364121f61b2050b1df5ecb1b8329c4eabaAlan Stern rc = device_create_file (&dum->gadget.dev, &dev_attr_function); 991efd54a364121f61b2050b1df5ecb1b8329c4eabaAlan Stern if (rc < 0) 9920f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior goto err_dev; 9930f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior platform_set_drvdata(pdev, dum); 9940f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior return rc; 9950f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 9960f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewiorerr_dev: 9970f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&dum->gadget); 9980f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewiorerr_udc: 9990f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior device_unregister(&dum->gadget.dev); 1000d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 1001d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 1002d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 10038364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_udc_remove (struct platform_device *pdev) 1004d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 10058364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern struct dummy *dum = platform_get_drvdata (pdev); 1006d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 10070f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&dum->gadget); 10088364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern platform_set_drvdata (pdev, NULL); 1009d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_remove_file (&dum->gadget.dev, &dev_attr_function); 1010d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_unregister (&dum->gadget.dev); 1011d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 1012d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 1013d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 1014fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewiorstatic void dummy_udc_pm(struct dummy *dum, struct dummy_hcd *dum_hcd, 1015fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior int suspend) 1016391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1017fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior spin_lock_irq(&dum->lock); 1018fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dum->udc_suspended = suspend; 1019d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior set_link_state(dum_hcd); 1020fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior spin_unlock_irq(&dum->lock); 1021fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior} 1022fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior 1023fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewiorstatic int dummy_udc_suspend(struct platform_device *pdev, pm_message_t state) 1024fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior{ 1025fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy *dum = platform_get_drvdata(pdev); 1026fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 1027391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1028fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dev_dbg(&pdev->dev, "%s\n", __func__); 1029fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dummy_udc_pm(dum, dum_hcd, 1); 1030d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); 1031391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1032391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1033391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1034fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewiorstatic int dummy_udc_resume(struct platform_device *pdev) 1035391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1036fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy *dum = platform_get_drvdata(pdev); 1037fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 1038391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1039fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dev_dbg(&pdev->dev, "%s\n", __func__); 1040fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dummy_udc_pm(dum, dum_hcd, 0); 1041d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); 1042391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1043391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1044391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 10453ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell Kingstatic struct platform_driver dummy_udc_driver = { 1046d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_udc_probe, 1047d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_udc_remove, 1048391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_udc_suspend, 1049391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_udc_resume, 10503ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .driver = { 10513ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .name = (char *) gadget_name, 10523ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .owner = THIS_MODULE, 10533ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King }, 1054d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 1055d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* MASTER/HOST SIDE DRIVER 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this uses the hcd framework to hook up to host side drivers. 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * its root hub will only have one device, otherwise it acts like 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a normal host controller. 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * when urbs are queued, they're just stuck on a list that we 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scan in a timer callback. that callback connects writes from 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the host with reads from the device, and so on, based on the 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * usb 2.0 rules. 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_urb_enqueue ( 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb, 107355016f10e31bb15b85d8c500f979dfdceb37d548Al Viro gfp_t mem_flags 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 1075cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1078e9df41c5c5899259541dc928872cad4d07b82076Alan Stern int rc; 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!urb->transfer_buffer && urb->transfer_buffer_length) 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp = kmalloc (sizeof *urbp, mem_flags); 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!urbp) 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp->urb = urb; 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1088cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 1089cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 1090e9df41c5c5899259541dc928872cad4d07b82076Alan Stern rc = usb_hcd_link_urb_to_ep(hcd, urb); 1091e9df41c5c5899259541dc928872cad4d07b82076Alan Stern if (rc) { 1092e9df41c5c5899259541dc928872cad4d07b82076Alan Stern kfree(urbp); 1093e9df41c5c5899259541dc928872cad4d07b82076Alan Stern goto done; 1094e9df41c5c5899259541dc928872cad4d07b82076Alan Stern } 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1096cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum_hcd->udev) { 1097cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->udev = urb->dev; 1098cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_get_dev(dum_hcd->udev); 1099cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } else if (unlikely(dum_hcd->udev != urb->dev)) 1100cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n"); 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1102cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list); 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->hcpriv = urbp; 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipetype (urb->pipe) == PIPE_CONTROL) 11051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 1; /* mark as a new urb */ 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* kick the scheduler, it'll do the rest */ 1108cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!timer_pending(&dum_hcd->timer)) 1109cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies + 1); 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1111e9df41c5c5899259541dc928872cad4d07b82076Alan Stern done: 1112cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 1113e9df41c5c5899259541dc928872cad4d07b82076Alan Stern return rc; 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1116e9df41c5c5899259541dc928872cad4d07b82076Alan Sternstatic int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1118cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 1119391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern unsigned long flags; 1120e9df41c5c5899259541dc928872cad4d07b82076Alan Stern int rc; 1121391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1122391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* giveback happens automatically in timer callback, 1123391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern * so make sure the callback happens */ 1124cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 1125cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 1126e9df41c5c5899259541dc928872cad4d07b82076Alan Stern 1127e9df41c5c5899259541dc928872cad4d07b82076Alan Stern rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1128cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && 1129cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman !list_empty(&dum_hcd->urbp_list)) 1130cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies); 1131e9df41c5c5899259541dc928872cad4d07b82076Alan Stern 1132cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 1133e9df41c5c5899259541dc928872cad4d07b82076Alan Stern return rc; 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1136a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewiorstatic int dummy_perform_transfer(struct urb *urb, struct dummy_request *req, 1137a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior u32 len) 1138a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior{ 1139a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior void *ubuf, *rbuf; 1140a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior int to_host; 1141a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 1142a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior to_host = usb_pipein(urb->pipe); 1143a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior rbuf = req->req.buf + req->req.actual; 1144a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior ubuf = urb->transfer_buffer + urb->actual_length; 1145a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 1146a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior if (to_host) 1147a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior memcpy(ubuf, rbuf, len); 1148a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior else 1149a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior memcpy(rbuf, ubuf, len); 1150a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior return len; 1151a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior} 1152a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* transfer up to a frame's worth; caller must own lock */ 11541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 11554d2f110c51eec853c50f68cf068888a77551c8d3Alan Sterntransfer(struct dummy *dum, struct urb *urb, struct dummy_ep *ep, int limit, 11564d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern int *status) 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstop: 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if there's no request queued, the device is NAKing; return */ 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned host_len, dev_len, len; 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int is_short, to_host; 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rescan = 0; 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1..N packets of ep->ep.maxpacket each ... the last one 11681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * may be short (including zero length). 11691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * writer can send a zlp explicitly (length 0) or implicitly 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (length mod maxpacket zero, and 'zero' flag); they always 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * terminate reads. 11731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host_len = urb->transfer_buffer_length - urb->actual_length; 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_len = req->req.length - req->req.actual; 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (host_len, dev_len); 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME update emulated data toggle too */ 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to_host = usb_pipein (urb->pipe); 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely (len == 0)) 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = 1; 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 11841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* not enough bandwidth left? */ 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (limit < ep->ep.maxpacket && limit < len) 11861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (len, (unsigned) limit); 11881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len == 0) 11891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 11901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* use an extra pass for the final short packet */ 11921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len > ep->ep.maxpacket) { 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 11941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len -= (len % ep->ep.maxpacket); 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = (len % ep->ep.maxpacket) != 0; 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1198a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior len = dummy_perform_transfer(urb, req, len); 1199a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 12011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit -= len; 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length += len; 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.actual += len; 12051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* short packets terminate, maybe with overflow/underflow. 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it's only really an error to write too much. 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * partially filling a buffer optionally blocks queue advances 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (so completion handlers can clean up the queue) but we don't 1212b0d9efba3ec53468984aecef8eeaf079089f2e5aAlan Stern * need to emulate such data-in-flight. 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (is_short) { 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len == dev_len) { 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 12174d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 12181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (to_host) { 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dev_len > host_len) 12214d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = -EOVERFLOW; 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12234d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 12241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!to_host) { 12254d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len > dev_len) 12271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* many requests terminate without a short packet */ 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.length == req->req.actual 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !req->req.zero) 12361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->transfer_buffer_length == urb->actual_length 12381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !(urb->transfer_flags 12394d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern & URB_ZERO_PACKET)) 12404d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* device side completion --> continuable */ 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.status != -EINPROGRESS) { 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 12481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* requests might have been unlinked... */ 12521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* host side completion --> terminate */ 12564d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern if (*status != -EINPROGRESS) 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* rescan to continue with any other queued i/o */ 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rescan) 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto top; 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 12641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit = ep->ep.maxpacket; 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dum->gadget.speed == USB_SPEED_HIGH) { 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tmp; 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* high bandwidth mode */ 127429cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto tmp = usb_endpoint_maxp(ep->desc); 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp = (tmp >> 11) & 0x03; 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp *= 8 /* applies to entire frame */; 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit += limit * tmp; 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 12791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->gadget.speed == USB_SPEED_SUPER) { 12801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman switch (ep->desc->bmAttributes & 0x03) { 12811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_ENDPOINT_XFER_ISOC: 12821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Sec. 4.4.8.2 USB3.0 Spec */ 12831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman limit = 3 * 16 * 1024 * 8; 12841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 12851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_ENDPOINT_XFER_INT: 12861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Sec. 4.4.7.2 USB3.0 Spec */ 12871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman limit = 3 * 1024 * 8; 12881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 12891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_ENDPOINT_XFER_BULK: 12901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman default: 12911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 12921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 12931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 12941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 12951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1297cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman#define is_active(dum_hcd) ((dum_hcd->port_status & \ 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_PORT_STAT_SUSPEND)) \ 13001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ? 13071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->ss_hcd : dum->hs_hcd))) 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((address & ~USB_DIR_IN) == 0) 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &dum->ep [0]; 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 1; i < DUMMY_ENDPOINTS; i++) { 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = &dum->ep [i]; 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep->desc) 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc->bEndpointAddress == address) 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ep; 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_active 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_InRequest (Dev_Request | USB_DIR_IN) 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_InRequest (Intf_Request | USB_DIR_IN) 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_InRequest (Ep_Request | USB_DIR_IN) 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13318be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman 13328be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman/** 13338be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * handle_control_request() - handles all control transfers 13348be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @dum: pointer to dummy (the_controller) 13358be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @urb: the urb request to handle 13368be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @setup: pointer to the setup data for a USB device control 13378be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * request 13388be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @status: pointer to request handling status 13398be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * 13408be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * Return 0 - if the request was handled 13418be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * 1 - if the request wasn't handles 13428be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * error code on error 13438be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman */ 1344cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb, 13458be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman struct usb_ctrlrequest *setup, 13468be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman int *status) 13478be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman{ 13488be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman struct dummy_ep *ep2; 1349cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = dum_hcd->dum; 13508be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman int ret_val = 1; 13518be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman unsigned w_index; 13528be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman unsigned w_value; 13538be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman 13548be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_index = le16_to_cpu(setup->wIndex); 13558be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_value = le16_to_cpu(setup->wValue); 13568be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman switch (setup->bRequest) { 13578be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_SET_ADDRESS: 13588be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType != Dev_Request) 13598be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 13608be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->address = w_value; 13618be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 13628be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dev_dbg(udc_dev(dum), "set_address = %d\n", 13638be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_value); 13648be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 13658be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 13668be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_SET_FEATURE: 13678be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Dev_Request) { 13688be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 13698be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman switch (w_value) { 13708be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_REMOTE_WAKEUP: 13718be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 13728be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_B_HNP_ENABLE: 13738be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->gadget.b_hnp_enable = 1; 13748be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 13758be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_A_HNP_SUPPORT: 13768be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->gadget.a_hnp_support = 1; 13778be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 13788be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_A_ALT_HNP_SUPPORT: 13798be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->gadget.a_alt_hnp_support = 1; 13808be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 13811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U1_ENABLE: 13821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 13831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 13841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U1_ENABLED; 13851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 13861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 13871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 13881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U2_ENABLE: 13891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 13901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 13911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U2_ENABLED; 13921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 13931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 13941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 13951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_LTM_ENABLE: 13961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 13971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 13981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_LTM_ENABLED; 13991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 14001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 14011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14028be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman default: 14038be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 14048be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14058be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (ret_val == 0) { 14068be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->devstatus |= (1 << w_value); 14078be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 14088be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14098be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else if (setup->bRequestType == Ep_Request) { 14108be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman /* endpoint halt */ 14118be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2 = find_endpoint(dum, w_index); 14128be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2 || ep2->ep.name == ep0name) { 14138be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 14148be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14158be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14168be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2->halted = 1; 14178be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 14188be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 14198be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14208be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14218be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_CLEAR_FEATURE: 14228be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Dev_Request) { 14238be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 14248be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman switch (w_value) { 14258be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_REMOTE_WAKEUP: 14268be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_value = USB_DEVICE_REMOTE_WAKEUP; 14278be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U1_ENABLE: 14291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 14301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 14311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U1_ENABLED; 14321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 14331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 14341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U2_ENABLE: 14361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 14371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 14381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U2_ENABLED; 14391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 14401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 14411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_LTM_ENABLE: 14431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 14441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 14451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_LTM_ENABLED; 14461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 14471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 14481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14498be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman default: 14508be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 14518be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14528be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14538be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (ret_val == 0) { 14548be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->devstatus &= ~(1 << w_value); 14558be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 14568be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14578be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else if (setup->bRequestType == Ep_Request) { 14588be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman /* endpoint halt */ 14598be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2 = find_endpoint(dum, w_index); 14608be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2) { 14618be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 14628be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14638be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14648be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2->wedged) 14658be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2->halted = 0; 14668be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 14678be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 14688be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14698be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14708be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_GET_STATUS: 14718be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Dev_InRequest 14728be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman || setup->bRequestType == Intf_InRequest 14738be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman || setup->bRequestType == Ep_InRequest) { 14748be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman char *buf; 14758be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman /* 14768be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * device: remote wakeup, selfpowered 14778be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * interface: nothing 14788be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * endpoint: halt 14798be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman */ 14808be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf = (char *)urb->transfer_buffer; 14818be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (urb->transfer_buffer_length > 0) { 14828be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Ep_InRequest) { 14838be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2 = find_endpoint(dum, w_index); 14848be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2) { 14858be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 14868be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 14878be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14888be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[0] = ep2->halted; 14898be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else if (setup->bRequestType == 14908be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman Dev_InRequest) { 14918be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[0] = (u8)dum->devstatus; 14928be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else 14938be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[0] = 0; 14948be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 14958be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (urb->transfer_buffer_length > 1) 14968be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[1] = 0; 14978be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman urb->actual_length = min_t(u32, 2, 14988be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman urb->transfer_buffer_length); 14998be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 15008be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 15018be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15028be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15038be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15048be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman return ret_val; 15058be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman} 15068be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* drive both sides of the transfers; looks like irq handlers to 15081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * both drivers except the callbacks aren't in_irq(). 15091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1510cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic void dummy_timer(unsigned long _dum_hcd) 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1512cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = (struct dummy_hcd *) _dum_hcd; 1513cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = dum_hcd->dum; 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp, *tmp; 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit, total; 15171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* simplistic model for one frame's bandwidth */ 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 8/*bytes*/ * 12/*packets*/; 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 64/*bytes*/ * 19/*packets*/; 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 15311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Bus speed is 500000 bytes/ms, so use a little less */ 15321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman total = 490000; 15331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1535cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME if HZ != 1000 this will probably misbehave ... */ 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* look at each urb queued by the host side driver */ 15421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 15431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1544cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum_hcd->udev) { 1545cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_err(dummy_dev(dum_hcd), 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "timer fired with no URBs pending?\n"); 15471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 15481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 15491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DUMMY_ENDPOINTS; i++) { 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep_name [i]) 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->ep [i].already_seen = 0; 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsrestart: 1558cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) { 15591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb; 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 address; 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = NULL; 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int type; 15644d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern int status = -EINPROGRESS; 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb = urbp->urb; 1567eb23105462304fd35571fd0cab1de7aec79a9ec5Alan Stern if (urb->unlinked) 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 1569cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman else if (dum_hcd->rh_state != DUMMY_RH_RUNNING) 1570391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern continue; 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = usb_pipetype (urb->pipe); 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* used up this frame's non-periodic bandwidth? 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME there's infinite bandwidth for control and 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * periodic transfers ... unrealistic. 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (total <= 0 && type == PIPE_BULK) 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* find the gadget's ep for this request (if configured) */ 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address = usb_pipeendpoint (urb->pipe); 15821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipein (urb->pipe)) 15831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address |= USB_DIR_IN; 15841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = find_endpoint(dum, address); 15851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep) { 15861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set_configuration() disagreement */ 1587cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 15881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "no ep configured for urb %p\n", 15891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb); 15904d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -EPROTO; 15911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 15921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->already_seen) 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 1; 15971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && urb->error_count) { 15981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 1; /* a new urb */ 15991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 0; 16001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->halted && !ep->setup_stage) { 16021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: must not be iso! */ 1603cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n", 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.name, urb); 16054d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -EPIPE; 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME make sure both ends agree on maxpacket */ 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle control requests */ 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && ep->setup_stage) { 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ctrlrequest setup; 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int value = 1; 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds setup = *(struct usb_ctrlrequest*) urb->setup_packet; 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* paranoia, in case of stale queued data */ 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 1620d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "stale req = %p\n", 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req); 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 0; 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver never sees set_address or operations 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * on standard feature flags. some hardware doesn't 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * even expose them. 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 16351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 0; 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 0; 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1638cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman value = handle_control_request(dum_hcd, urb, &setup, 16398be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman &status); 16401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver handles all other requests. block 16421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * until setup() returns; no reentrancy issues etc. 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value > 0) { 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = dum->driver->setup (&dum->gadget, 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &setup); 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 16491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value >= 0) { 16511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no delays (max 64KB data stage) */ 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = 64*1024; 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto treat_control_like_bulk; 16541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* error, see below */ 16561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value < 0) { 16591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value != -EOPNOTSUPP) 1660d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 16611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "setup --> %d\n", 16621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value); 16634d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -EPIPE; 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length = 0; 16651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* non-control requests */ 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = total; 16721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_ISOCHRONOUS: 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * use urb->iso_frame_desc[i]. 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete whether or not ep has requests queued. 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * report random errors, to debug drivers. 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 16804d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -ENOSYS; 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_INTERRUPT: 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this almost certainly polls too fast. 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FALLTHROUGH */ 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // case PIPE_BULK: case PIPE_CONTROL: 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds treat_control_like_bulk: 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 16944d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern total = transfer(dum, urb, ep, limit, &status); 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 16971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* incomplete transfer? */ 16994d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern if (status == -EINPROGRESS) 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsreturn_urb: 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del (&urbp->urbp_list); 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (urbp); 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep) 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = ep->setup_stage = 0; 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1708cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb); 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 1710cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status); 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1716cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (list_empty(&dum_hcd->urbp_list)) { 1717cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_put_dev(dum_hcd->udev); 1718cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->udev = NULL; 1719cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { 1720391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* want a 1 msec delay here */ 1721cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PORT_C_MASK \ 1730c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern ((USB_PORT_STAT_C_CONNECTION \ 1731c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_ENABLE \ 1732c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_SUSPEND \ 1733c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_OVERCURRENT \ 1734c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_RESET) << 16) 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_status (struct usb_hcd *hcd, char *buf) 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1738cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1740391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern int retval = 0; 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1742cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1744cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 1745541c7d432f76771079e7c295d596ea47cc6a3030Alan Stern if (!HCD_HW_ACCESSIBLE(hcd)) 1746391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern goto done; 1747f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1748cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->resuming && time_after_eq(jiffies, dum_hcd->re_timeout)) { 1749cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 1750cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; 1751cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 1752f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 1753f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1754cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & PORT_C_MASK) != 0) { 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *buf = (1 << 1); 1756cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n", 1757cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status); 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 1; 1759cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED) 1760391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_resume_root_hub (hcd); 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1762391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sterndone: 1763cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 17651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 17681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanss_hub_descriptor(struct usb_hub_descriptor *desc) 17691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 17701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman memset(desc, 0, sizeof *desc); 17711cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->bDescriptorType = 0x2a; 17721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->bDescLength = 12; 17731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->wHubCharacteristics = cpu_to_le16(0x0001); 17741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->bNbrPorts = 1; 17751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/ 17761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->u.ss.DeviceRemovable = 0xffff; 17771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 17781cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 17791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic inline void 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldshub_descriptor (struct usb_hub_descriptor *desc) 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 17821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset (desc, 0, sizeof *desc); 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescriptorType = 0x29; 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescLength = 9; 1785fd05e720099e8eeddb378305d1a41c1445344b91Al Viro desc->wHubCharacteristics = cpu_to_le16(0x0001); 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bNbrPorts = 1; 1787dbe79bbe9dcb22cb3651c46f18943477141ca452John Youn desc->u.hs.DeviceRemovable[0] = 0xff; 1788dbe79bbe9dcb22cb3651c46f18943477141ca452John Youn desc->u.hs.DeviceRemovable[1] = 0xff; 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_control ( 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 typeReq, 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wValue, 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wIndex, 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf, 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wLength 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 1799cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 18001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = 0; 18011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1803541c7d432f76771079e7c295d596ea47cc6a3030Alan Stern if (!HCD_HW_ACCESSIBLE(hcd)) 1804391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ETIMEDOUT; 1805391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1806cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 1807cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 1808cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (typeReq) { 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearHubFeature: 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearPortFeature: 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 18151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 18161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 18171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_SUSPEND req not " 18181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 3.0 roothub\n"); 18191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 18201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 1821cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) { 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 20msec resume signaling */ 1823cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->resuming = 1; 1824cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->re_timeout = jiffies + 1825f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern msecs_to_jiffies(20); 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_POWER: 18291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 18301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum_hcd->port_status & USB_PORT_STAT_POWER) 18311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 18321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "power-off\n"); 18331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else 18341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum_hcd->port_status & 18351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SS_PORT_STAT_POWER) 18361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 18371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "power-off\n"); 1838f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1840cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~(1 << wValue); 1841cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 18421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubDescriptor: 18451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3 && 18461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (wLength < USB_DT_SS_HUB_SIZE || 18471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman wValue != (USB_DT_SS_HUB << 8))) { 18481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 18491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "Wrong hub descriptor type for " 18501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB 3.0 roothub.\n"); 18511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 18521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 18531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) 18541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ss_hub_descriptor((struct usb_hub_descriptor *) buf); 18551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 18561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman hub_descriptor((struct usb_hub_descriptor *) buf); 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubStatus: 1859551509d267905705f6d723e51ec706916f06b859Harvey Harrison *(__le32 *) buf = cpu_to_le32 (0); 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetPortStatus: 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (wIndex != 1) 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* whoever resets or resumes must GetPortStatus to 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete it!! 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1868cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->resuming && 1869cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman time_after_eq(jiffies, dum_hcd->re_timeout)) { 1870cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 1871cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1873cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_RESET) != 0 && 1874cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman time_after_eq(jiffies, dum_hcd->re_timeout)) { 1875cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_C_RESET << 16); 1876cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_RESET; 1877cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->dum->pullup) { 1878cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_ENABLE; 18791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 18801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed < HCD_USB3) { 18811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman switch (dum_hcd->dum->gadget.speed) { 18821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_HIGH: 18831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 18841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_HIGH_SPEED; 18851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 18861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_LOW: 18871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->dum->gadget.ep0-> 18881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman maxpacket = 8; 18891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 18901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_LOW_SPEED; 18911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 18921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman default: 18931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->dum->gadget.speed = 18941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SPEED_FULL; 18951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 18961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1900cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 1901cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman ((__le16 *) buf)[0] = cpu_to_le16 (dum_hcd->port_status); 1902cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman ((__le16 *) buf)[1] = cpu_to_le16 (dum_hcd->port_status >> 16); 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 19041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetHubFeature: 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 19061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 19071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetPortFeature: 19081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 19091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_LINK_STATE: 19101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 19111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_LINK_STATE req not " 19131cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 19141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 19151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 19161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 19171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * Since this is dummy we don't have an actual link so 19181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * there is nothing to do for the SET_LINK_STATE cmd 19191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 19201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 19211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_U1_TIMEOUT: 19221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_U2_TIMEOUT: 19231cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* TODO: add suspend/resume support! */ 19241cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 19251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_U1/2_TIMEOUT req not " 19271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 19281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 19291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 19301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 19311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 19321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Applicable only for USB2.0 hub */ 19331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 19341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_SUSPEND req not " 19361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 3.0 roothub\n"); 19371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 19381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 1939cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->active) { 1940cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_SUSPEND; 1941f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1942f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* HNP would happen here; for now we 1943f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern * assume b_bus_req is always true. 1944f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern */ 1945cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 1946f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (((1 << USB_DEVICE_B_HNP_ENABLE) 1947cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman & dum_hcd->dum->devstatus) != 0) 1948cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19495742b0c95026c817d9c266174ca39a909e8d38caAlan Stern "no HNP yet!\n"); 19501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1952f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern case USB_PORT_FEAT_POWER: 19531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) 19541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= USB_SS_PORT_STAT_POWER; 19551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 19561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_POWER; 1957cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 1958f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern break; 19591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_BH_PORT_RESET: 19601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Applicable only for USB3.0 hub */ 19611cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 19621cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19631cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_BH_PORT_RESET req not " 19641cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 19651cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 19661cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 19671cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* FALLS THROUGH */ 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_RESET: 1969f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* if it's already enabled, disable */ 19701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 19711cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 0; 19721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 19731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_SS_PORT_STAT_POWER | 19741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION | 19751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_RESET); 19761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else 19771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE 1978f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_LOW_SPEED 1979f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_HIGH_SPEED); 1980cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman /* 1981cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * We want to reset device status. All but the 1982cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * Self powered feature 1983cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman */ 1984cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->dum->devstatus &= 1985cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman (1 << USB_DEVICE_SELF_POWERED); 19861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 19871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * FIXME USB3.0: what is the correct reset signaling 19881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * interval? Is it still 50msec as for HS? 19891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 1990cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50); 1991f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 19921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 19931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 19941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & 19951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SS_PORT_STAT_POWER) != 0) { 19961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= (1 << wValue); 19971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman set_link_state(dum_hcd); 19981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 19991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else 20001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & 20011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_POWER) != 0) { 20021cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= (1 << wValue); 20031cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman set_link_state(dum_hcd); 20041cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case GetPortErrorCount: 20081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 20091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "GetPortErrorCount req not " 20111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 20121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 20131cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* We'll always return 0 since this is a dummy hub */ 20151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman *(__le32 *) buf = cpu_to_le32(0); 20161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case SetHubDepth: 20181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 20191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "SetHubDepth req not supported for " 20211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB 2.0 roothub\n"); 20221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 2026cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "hub control req%04x v%04x i%04x l%d\n", 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds typeReq, wValue, wIndex, wLength); 20291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanerror: 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* "protocol stall" on error */ 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 20321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2033cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 2034685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern 2035cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & PORT_C_MASK) != 0) 2036685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (hcd); 20371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 20381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20400c0382e32d46f606951010b202382be14d180a17Alan Sternstatic int dummy_bus_suspend (struct usb_hcd *hcd) 2041391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2042cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 2043391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2044441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); 20453cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern 2046cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irq(&dum_hcd->dum->lock); 2047cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state = DUMMY_RH_SUSPENDED; 2048cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 20493cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd->state = HC_STATE_SUSPENDED; 2050cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irq(&dum_hcd->dum->lock); 2051391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 2052391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 2053391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 20540c0382e32d46f606951010b202382be14d180a17Alan Sternstatic int dummy_bus_resume (struct usb_hcd *hcd) 2055391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2056cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 20573cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern int rc = 0; 20583cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern 2059441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); 2060391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2061cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irq(&dum_hcd->dum->lock); 2062541c7d432f76771079e7c295d596ea47cc6a3030Alan Stern if (!HCD_HW_ACCESSIBLE(hcd)) { 2063cfa59dab27d1b282886e7772a8f9548236883892Alan Stern rc = -ESHUTDOWN; 20643cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern } else { 2065cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state = DUMMY_RH_RUNNING; 2066cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 2067cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!list_empty(&dum_hcd->urbp_list)) 2068cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies); 20693cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd->state = HC_STATE_RUNNING; 20703cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern } 2071cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irq(&dum_hcd->dum->lock); 20723cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern return rc; 2073391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline ssize_t 20781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsshow_urb (char *buf, size_t size, struct urb *urb) 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ep = usb_pipeendpoint (urb->pipe); 20811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return snprintf (buf, size, 20831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "urb/%p %s ep%d%s%s len %d/%d\n", 20841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb, 20851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; 20861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (urb->dev->speed) { 20877c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_SPEED_LOW: 20887c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "ls"; 20897c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 20907c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_SPEED_FULL: 20917c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "fs"; 20927c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 20937c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_SPEED_HIGH: 20947c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "hs"; 20957c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 20961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 20971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman s = "ss"; 20981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20997c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman default: 21007c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "?"; 21017c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 21021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s; }), 21031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", 21041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; \ 21051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { \ 21067c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case PIPE_CONTROL: \ 21077c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = ""; \ 21087c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 21097c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case PIPE_BULK: \ 21107c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "-bulk"; \ 21117c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 21127c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case PIPE_INTERRUPT: \ 21137c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "-int"; \ 21147c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 21157c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman default: \ 21167c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "-iso"; \ 21177c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 21181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s;}), 21191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length, urb->transfer_buffer_length); 21201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 212310523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_urbs (struct device *dev, struct device_attribute *attr, char *buf) 21241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd = dev_get_drvdata (dev); 2126cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 21271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 21281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t size = 0; 21291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2131cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 2132cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) { 21331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t temp; 21341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); 21361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += temp; 21371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size += temp; 21381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2139cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 21401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return size; 21421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); 21441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic int dummy_start_ss(struct dummy_hcd *dum_hcd) 21461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 21471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman init_timer(&dum_hcd->timer); 21481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->timer.function = dummy_timer; 21491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->timer.data = (unsigned long)dum_hcd; 21501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->rh_state = DUMMY_RH_RUNNING; 21511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman INIT_LIST_HEAD(&dum_hcd->urbp_list); 21521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET; 21531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING; 21541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1; 21551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman#ifdef CONFIG_USB_OTG 21561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->self.otg_port = 1; 21571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman#endif 21581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 21591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 21601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ 21611cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); 21621cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 21631cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2164cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int dummy_start(struct usb_hcd *hcd) 21651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2166cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 21671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 21691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MASTER side init ... we emulate a root hub that'll only ever 21701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * talk to one device (the slave side). Also appears in sysfs, 21711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * just like more familiar pci-based HCDs. 21721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 21731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!usb_hcd_is_primary_hcd(hcd)) 21741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return dummy_start_ss(dum_hcd); 21751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2176cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_init(&dum_hcd->dum->lock); 2177cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman init_timer(&dum_hcd->timer); 2178cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->timer.function = dummy_timer; 2179cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->timer.data = (unsigned long)dum_hcd; 2180cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state = DUMMY_RH_RUNNING; 21811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2182cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman INIT_LIST_HEAD(&dum_hcd->urbp_list); 21831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2184caf29f62655e7aa57996821535d11fa3b0537b6bAlan Stern hcd->power_budget = POWER_BUDGET; 21851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hcd->state = HC_STATE_RUNNING; 2186685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern hcd->uses_new_polling = 1; 21871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21885742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#ifdef CONFIG_USB_OTG 21895742b0c95026c817d9c266174ca39a909e8d38caAlan Stern hcd->self.otg_port = 1; 21905742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#endif 21915742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 21921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ 2193cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); 21941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 21951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dummy_stop (struct usb_hcd *hcd) 21971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 21981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 21991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2200cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum = (hcd_to_dummy_hcd(hcd))->dum; 2201cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); 2202cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_gadget_unregister_driver(dum->driver); 2203cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); 22041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 22071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_h_get_frame (struct usb_hcd *hcd) 22091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dummy_g_get_frame (NULL); 22111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2213cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int dummy_setup(struct usb_hcd *hcd) 2214cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman{ 2215cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (usb_hcd_is_primary_hcd(hcd)) { 2216cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman the_controller.hs_hcd = hcd_to_dummy_hcd(hcd); 2217cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman the_controller.hs_hcd->dum = &the_controller; 22181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 22191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * Mark the first roothub as being USB 2.0. 22201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * The USB 3.0 roothub will be registered later by 22211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * dummy_hcd_probe() 22221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 2223cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hcd->speed = HCD_USB2; 2224cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hcd->self.root_hub->speed = USB_SPEED_HIGH; 22251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 22261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.ss_hcd = hcd_to_dummy_hcd(hcd); 22271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.ss_hcd->dum = &the_controller; 22281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman hcd->speed = HCD_USB3; 22291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman hcd->self.root_hub->speed = USB_SPEED_SUPER; 2230cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } 2231cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return 0; 2232cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman} 2233cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 22341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman/* Change a group of bulk endpoints to support multiple stream IDs */ 22351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanint dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, 22361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct usb_host_endpoint **eps, unsigned int num_eps, 22371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman unsigned int num_streams, gfp_t mem_flags) 22381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 22391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) 22401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), 22411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "%s() - ERROR! Not supported for USB2.0 roothub\n", 22421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman __func__); 22431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 22441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 22451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 22461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman/* Reverts a group of bulk endpoints back to not using stream IDs. */ 22471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanint dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev, 22481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct usb_host_endpoint **eps, unsigned int num_eps, 22491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman gfp_t mem_flags) 22501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 22511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) 22521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(hcd_to_dummy_hcd(hcd)), 22531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "%s() - ERROR! Not supported for USB2.0 roothub\n", 22541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman __func__); 22551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 22561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 22571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 22581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic struct hc_driver dummy_hcd = { 22591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .description = (char *) driver_name, 22601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .product_desc = "Dummy host controller", 2261cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman .hcd_priv_size = sizeof(struct dummy_hcd), 22621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22631cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman .flags = HCD_USB3 | HCD_SHARED, 22641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2265cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman .reset = dummy_setup, 22661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = dummy_start, 22671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = dummy_stop, 22681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_enqueue = dummy_urb_enqueue, 22701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_dequeue = dummy_urb_dequeue, 22711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame_number = dummy_h_get_frame, 22731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_status_data = dummy_hub_status, 22751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_control = dummy_hub_control, 22760c0382e32d46f606951010b202382be14d180a17Alan Stern .bus_suspend = dummy_bus_suspend, 22770c0382e32d46f606951010b202382be14d180a17Alan Stern .bus_resume = dummy_bus_resume, 22781cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 22791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman .alloc_streams = dummy_alloc_streams, 22801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman .free_streams = dummy_free_streams, 22811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 22821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22838364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_hcd_probe(struct platform_device *pdev) 22841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2285cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct usb_hcd *hs_hcd; 22861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct usb_hcd *ss_hcd; 22871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 22881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22898364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); 22901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!mod_data.is_super_speed) 22921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd.flags = HCD_USB2; 2293cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev)); 2294cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!hs_hcd) 22951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 2296cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hs_hcd->has_tt = 1; 22971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2298cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman retval = usb_add_hcd(hs_hcd, 0, 0); 22991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval != 0) { 2300cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_put_hcd(hs_hcd); 23011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return retval; 23021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 23031cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23041cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (mod_data.is_super_speed) { 23051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev, 23061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_name(&pdev->dev), hs_hcd); 23071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!ss_hcd) { 23081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman retval = -ENOMEM; 23091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto dealloc_usb2_hcd; 23101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 23111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman retval = usb_add_hcd(ss_hcd, 0, 0); 23131cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (retval) 23141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto put_usb3_hcd; 23151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 23161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 23171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanput_usb3_hcd: 23191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_put_hcd(ss_hcd); 23201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmandealloc_usb2_hcd: 23211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_put_hcd(hs_hcd); 23221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.hs_hcd = the_controller.ss_hcd = NULL; 23231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 23241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2326cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int dummy_hcd_remove(struct platform_device *pdev) 23271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2328cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum; 2329cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 2330cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum; 23311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->ss_hcd) { 23331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); 23341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_put_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); 23351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 23361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2337cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); 2338cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); 23391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2340cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman the_controller.hs_hcd = NULL; 23411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.ss_hcd = NULL; 23421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2343d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 23441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23468364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state) 2347391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2348391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 2349cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 23503cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern int rc = 0; 2351391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2352441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&pdev->dev, "%s\n", __func__); 2353391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 23543cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd = platform_get_drvdata (pdev); 2355cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 2356cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { 23573cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern dev_warn(&pdev->dev, "Root hub isn't suspended!\n"); 23583cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern rc = -EBUSY; 23593cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern } else 23603cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 23613cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern return rc; 2362391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 2363391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 23648364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_hcd_resume (struct platform_device *pdev) 2365391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2366391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 2367391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2368441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&pdev->dev, "%s\n", __func__); 2369391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 23703cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd = platform_get_drvdata (pdev); 23713cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 2372391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_poll_rh_status (hcd); 2373391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 2374391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 2375391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 23763ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell Kingstatic struct platform_driver dummy_hcd_driver = { 2377d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_hcd_probe, 2378d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_hcd_remove, 2379391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_hcd_suspend, 2380391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_hcd_resume, 23813ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .driver = { 23823ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .name = (char *) driver_name, 23833ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .owner = THIS_MODULE, 23843ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King }, 2385d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 23861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2387d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/*-------------------------------------------------------------------------*/ 23881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2389a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternstatic struct platform_device *the_udc_pdev; 2390a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternstatic struct platform_device *the_hcd_pdev; 23911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init (void) 23931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2394a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern int retval = -ENOMEM; 23951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_disabled ()) 23971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2398d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 23997eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman if (!mod_data.is_high_speed && mod_data.is_super_speed) 24007eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman return -EINVAL; 24017eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman 2402a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern the_hcd_pdev = platform_device_alloc(driver_name, -1); 2403a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern if (!the_hcd_pdev) 24041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 2405a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern the_udc_pdev = platform_device_alloc(gadget_name, -1); 2406a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern if (!the_udc_pdev) 2407a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_alloc_udc; 2408d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2409a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_driver_register(&dummy_hcd_driver); 2410a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern if (retval < 0) 2411a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_register_hcd_driver; 2412a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_driver_register(&dummy_udc_driver); 2413d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2414d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern goto err_register_udc_driver; 2415d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2416a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_device_add(the_hcd_pdev); 2417d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2418a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_add_hcd; 24191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!the_controller.hs_hcd || 24201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (!the_controller.ss_hcd && mod_data.is_super_speed)) { 2421865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior /* 2422865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * The hcd was added successfully but its probe function failed 2423865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * for some reason. 2424865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior */ 2425865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior retval = -EINVAL; 2426865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior goto err_add_udc; 2427865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior } 2428a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_device_add(the_udc_pdev); 2429d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2430a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_add_udc; 2431865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior if (!platform_get_drvdata(the_udc_pdev)) { 2432865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior /* 2433865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * The udc was added successfully but its probe function failed 2434865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * for some reason. 2435865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior */ 2436865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior retval = -EINVAL; 2437865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior goto err_probe_udc; 2438865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior } 2439d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return retval; 2440d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2441865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewiorerr_probe_udc: 2442865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior platform_device_del(the_udc_pdev); 2443a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_add_udc: 2444a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_del(the_hcd_pdev); 2445a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_add_hcd: 2446a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_udc_driver); 2447d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternerr_register_udc_driver: 2448a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_hcd_driver); 2449a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_register_hcd_driver: 2450a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_put(the_udc_pdev); 2451a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_alloc_udc: 2452a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_put(the_hcd_pdev); 24531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 24541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init (init); 24561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit cleanup (void) 24581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2459a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_unregister(the_udc_pdev); 2460a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_unregister(the_hcd_pdev); 2461a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_udc_driver); 2462a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_hcd_driver); 24631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 24641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit (cleanup); 2465