dummy_hcd.c revision 59f08e6d2015a16fb4856f910ef0660d13a0c767
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * dummy_hcd.c -- Dummy/Loopback USB host and device emulator driver. 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Maintainer: Alan Stern <stern@rowland.harvard.edu> 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2003 David Brownell 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2003-2005 Alan Stern 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (at your option) any later version. 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This exposes a device side "USB gadget" API, driven by requests to a 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Linux-USB host controller driver. USB traffic is simulated; there's 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * no need for USB hardware. Use this with two other drivers: 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Gadget driver, responding to requests (slave); 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Host-side device driver, as already familiar in Linux. 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Having this all in one kernel can help some stages of development, 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * bypassing some hardware (and driver) issues. UML could help too. 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/timer.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/list.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/interrupt.h> 38d052d1beff706920e82c5d55006b08e256b5df09Russell King#include <linux/platform_device.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb.h> 409454a57ab5922e5cd25321cae9d1a8cbeb3e2e85David Brownell#include <linux/usb/gadget.h> 4127729aadd31dafddaaf64c24f8ef6d0ff750f3aaEric Lescouet#include <linux/usb/hcd.h> 4214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior#include <linux/scatterlist.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/byteorder.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/irq.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/system.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/unaligned.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_DESC "USB Host+Gadget Emulator" 52391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern#define DRIVER_VERSION "02 May 2005" 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 54caf29f62655e7aa57996821535d11fa3b0537b6bAlan Stern#define POWER_BUDGET 500 /* in mA; use 8 for low-power port testing */ 55caf29f62655e7aa57996821535d11fa3b0537b6bAlan Stern 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char driver_name [] = "dummy_hcd"; 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char driver_desc [] = "USB Host+Gadget Emulator"; 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char gadget_name [] = "dummy_udc"; 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION (DRIVER_DESC); 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR ("David Brownell"); 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE ("GPL"); 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 651cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstruct dummy_hcd_module_parameters { 661cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman bool is_super_speed; 677eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman bool is_high_speed; 681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman}; 691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic struct dummy_hcd_module_parameters mod_data = { 717eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman .is_super_speed = false, 727eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman .is_high_speed = true, 731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman}; 741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanmodule_param_named(is_super_speed, mod_data.is_super_speed, bool, S_IRUGO); 751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana BrokhmanMODULE_PARM_DESC(is_super_speed, "true to simulate SuperSpeed connection"); 767eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhmanmodule_param_named(is_high_speed, mod_data.is_high_speed, bool, S_IRUGO); 777eca4c5a8b73f22ad16ad6e76b901351732355daTatyana BrokhmanMODULE_PARM_DESC(is_high_speed, "true to simulate HighSpeed connection"); 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* gadget side driver data structres */ 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy_ep { 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head queue; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long last_io; /* jiffies timestamp */ 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget *gadget; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const struct usb_endpoint_descriptor *desc; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ep ep; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned halted : 1; 88851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern unsigned wedged : 1; 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned already_seen : 1; 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned setup_stage : 1; 91a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned stream_en:1; 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy_request { 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head queue; /* ep's requests */ 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_request req; 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy_ep *usb_ep_to_dummy_ep (struct usb_ep *_ep) 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (_ep, struct dummy_ep, ep); 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy_request *usb_request_to_dummy_request 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (struct usb_request *_req) 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (_req, struct dummy_request, req); 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Every device has ep0 for control requests, plus up to 30 more endpoints, 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in one of two types: 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Configurable: direction (in/out), type (bulk, iso, etc), and endpoint 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * number can be changed. Names like "ep-a" are used for this type. 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Fixed Function: in other cases. some characteristics may be mutable; 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * that'd be hardware-specific. Names like "ep12out-bulk" are used. 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Gadget drivers are responsible for not setting up conflicting endpoint 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * configurations, illegal or unsupported packet lengths, and so on. 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char ep0name [] = "ep0"; 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const char *const ep_name [] = { 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep0name, /* everyone has ep0 */ 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* act like a net2280: high speed, six configurable endpoints */ 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep-a", "ep-b", "ep-c", "ep-d", "ep-e", "ep-f", 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* or like pxa250: fifteen fixed function endpoints */ 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep1in-bulk", "ep2out-bulk", "ep3in-iso", "ep4out-iso", "ep5in-int", 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep6in-bulk", "ep7out-bulk", "ep8in-iso", "ep9out-iso", "ep10in-int", 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep11in-bulk", "ep12out-bulk", "ep13in-iso", "ep14out-iso", 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep15in-int", 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* or like sa1100: two fixed function endpoints */ 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "ep1out-bulk", "ep2in-bulk", 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 14352950ed40dc97456209979af1d8f51b63cf6dcabTobias Klauser#define DUMMY_ENDPOINTS ARRAY_SIZE(ep_name) 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 145d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/*-------------------------------------------------------------------------*/ 146d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FIFO_SIZE 64 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct urbp { 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head urbp_list; 15214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior struct sg_mapping_iter miter; 15314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior u32 miter_started; 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 156391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 157391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sternenum dummy_rh_state { 158391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_RESET, 159391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_SUSPENDED, 160391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern DUMMY_RH_RUNNING 161391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern}; 162391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 163cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstruct dummy_hcd { 164cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum; 165cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman enum dummy_rh_state rh_state; 166cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct timer_list timer; 167cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman u32 port_status; 168cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman u32 old_status; 169cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned long re_timeout; 170cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 171cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct usb_device *udev; 172cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct list_head urbp_list; 173a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior u32 stream_en_ep; 174a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior u8 num_stream[30 / 2]; 175cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 176cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned active:1; 177cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned old_active:1; 178cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman unsigned resuming:1; 179cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman}; 180cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct dummy { 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SLAVE/GADGET side support 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep ep [DUMMY_ENDPOINTS]; 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int address; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget gadget; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_gadget_driver *driver; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request fifo_req; 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 fifo_buf [FIFO_SIZE]; 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 devstatus; 194391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern unsigned udc_suspended:1; 195f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned pullup:1; 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MASTER/HOST side support 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 200cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *hs_hcd; 2011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct dummy_hcd *ss_hcd; 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 204cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct dummy_hcd *hcd_to_dummy_hcd(struct usb_hcd *hcd) 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 206cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return (struct dummy_hcd *) (hcd->hcd_priv); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 209cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct usb_hcd *dummy_hcd_to_hcd(struct dummy_hcd *dum) 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of((void *) dum, struct usb_hcd, hcd_priv); 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 214cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct device *dummy_dev(struct dummy_hcd *dum) 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 216cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return dummy_hcd_to_hcd(dum)->self.controller; 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 219d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic inline struct device *udc_dev (struct dummy *dum) 220d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 221d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return dum->gadget.dev.parent; 222d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 223d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *ep_to_dummy (struct dummy_ep *ep) 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (ep->gadget, struct dummy, gadget); 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 229cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic inline struct dummy_hcd *gadget_to_dummy_hcd(struct usb_gadget *gadget) 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 231cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = container_of(gadget, struct dummy, gadget); 2321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->gadget.speed == USB_SPEED_SUPER) 2331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return dum->ss_hcd; 2341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 2351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return dum->hs_hcd; 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct dummy *gadget_dev_to_dummy (struct device *dev) 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return container_of (dev, struct dummy, gadget.dev); 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 243cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic struct dummy the_controller; 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 247f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* SLAVE/GADGET SIDE UTILITY ROUTINES */ 248f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 249f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* called with spinlock held */ 250f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic void nuke (struct dummy *dum, struct dummy_ep *ep) 251f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 252f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern while (!list_empty (&ep->queue)) { 253f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy_request *req; 254f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 255f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req = list_entry (ep->queue.next, struct dummy_request, queue); 256f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern list_del_init (&req->queue); 257f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req->req.status = -ESHUTDOWN; 258f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 259f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock (&dum->lock); 260f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern req->req.complete (&ep->ep, &req->req); 261f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock (&dum->lock); 262f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 263f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 264f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 265f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* caller must hold lock */ 266f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic void 267f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstop_activity (struct dummy *dum) 268f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 269f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy_ep *ep; 270f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 271f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* prevent any more requests */ 272f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->address = 0; 273f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 274f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* The timer is left running so that outstanding URBs can fail */ 275f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 276f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* nuke any pending requests first, so driver i/o is quiesced */ 277f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern list_for_each_entry (ep, &dum->gadget.ep_list, ep.ep_list) 278f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern nuke (dum, ep); 279f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 280f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* driver now does any non-usb quiescing necessary */ 281f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 282f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 2831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman/** 2841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * set_link_state_by_speed() - Sets the current state of the link according to 2851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * the hcd speed 2861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * @dum_hcd: pointer to the dummy_hcd structure to update the link state for 2871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * 2881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * This function updates the port_status according to the link state and the 2891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * speed of the hcd. 2901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 2911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic void set_link_state_by_speed(struct dummy_hcd *dum_hcd) 2921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 2931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct dummy *dum = dum_hcd->dum; 2941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3) { 2961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) == 0) { 2971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 0; 2981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else if (!dum->pullup || dum->udc_suspended) { 2991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* UDC suspend must cause a disconnect */ 3001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | 3011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_ENABLE); 3021cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3031cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) != 0) 3041cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 3071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* device is connected and not suspended */ 3081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_CONNECTION | 3091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_SPEED_5GBPS) ; 3101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) == 0) 3121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3131cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & 3151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_ENABLE) == 1 && 3161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (dum_hcd->port_status & 3171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SS_PORT_LS_U0) == 1 && 3181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->rh_state != DUMMY_RH_SUSPENDED) 3191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->active = 1; 3201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 3211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 3221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_POWER) == 0) { 3231cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 0; 3241cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else if (!dum->pullup || dum->udc_suspended) { 3251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* UDC suspend must cause a disconnect */ 3261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~(USB_PORT_STAT_CONNECTION | 3271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_ENABLE | 3281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_LOW_SPEED | 3291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_HIGH_SPEED | 3301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_SUSPEND); 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 } else { 3361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_CONNECTION; 3371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->old_status & 3381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION) == 0) 3391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 3401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_PORT_STAT_C_CONNECTION << 16); 3411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0) 3421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; 3431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else if ((dum_hcd->port_status & 3441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_SUSPEND) == 0 && 3451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->rh_state != DUMMY_RH_SUSPENDED) 3461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->active = 1; 3471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 3481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 3491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 3501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 351f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/* caller must hold lock */ 352cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic void set_link_state(struct dummy_hcd *dum_hcd) 353f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 354cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = dum_hcd->dum; 355cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 356cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->active = 0; 3571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->pullup) 3581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dummy_hcd_to_hcd(dum_hcd)->speed == HCD_USB3 && 3591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->gadget.speed != USB_SPEED_SUPER) || 3601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (dummy_hcd_to_hcd(dum_hcd)->speed != HCD_USB3 && 3611cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->gadget.speed == USB_SPEED_SUPER)) 3621cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return; 3631cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 3641cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman set_link_state_by_speed(dum_hcd); 365f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 366cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_ENABLE) == 0 || 367cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->active) 368cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->resuming = 0; 369f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 3701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* if !connected or reset */ 371cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0 || 372cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman (dum_hcd->port_status & USB_PORT_STAT_RESET) != 0) { 3731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 3741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * We're connected and not reset (reset occurred now), 3751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * and driver attached - disconnect! 3761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 377cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->old_status & USB_PORT_STAT_CONNECTION) != 0 && 3781cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (dum_hcd->old_status & USB_PORT_STAT_RESET) == 0 && 3791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver) { 3801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman stop_activity(dum); 3811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_unlock(&dum->lock); 3821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver->disconnect(&dum->gadget); 3831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_lock(&dum->lock); 384f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 385cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } else if (dum_hcd->active != dum_hcd->old_active) { 386cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->old_active && dum->driver->suspend) { 3871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_unlock(&dum->lock); 3881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver->suspend(&dum->gadget); 3891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_lock(&dum->lock); 3901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else if (!dum_hcd->old_active && dum->driver->resume) { 3911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_unlock(&dum->lock); 3921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->driver->resume(&dum->gadget); 3931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman spin_lock(&dum->lock); 394f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 395f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 396f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 397cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->old_status = dum_hcd->port_status; 398cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->old_active = dum_hcd->active; 399f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 400f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 401f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern/*-------------------------------------------------------------------------*/ 402f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* SLAVE/GADGET SIDE DRIVER 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This only tracks gadget state. All the work is done when the host 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * side tries some (emulated) i/o operation. Real device controller 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * drivers would do real i/o using dma, fifos, irqs, timers, etc. 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define is_enabled(dum) \ 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (dum->port_status & USB_PORT_STAT_ENABLE) 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 417cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned max; 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !desc || ep->desc || _ep->name == ep0name 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || desc->bDescriptorType != USB_DT_ENDPOINT) 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 427cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum->driver) 428cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return -ESHUTDOWN; 429719e52cbc7b826fae9501f3b86b8cbc25a4c5268Sebastian Andrzej Siewior 430719e52cbc7b826fae9501f3b86b8cbc25a4c5268Sebastian Andrzej Siewior dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 431cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!is_enabled(dum_hcd)) 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 433cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 434cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman /* 435cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * For HS/FS devices only bits 0..10 of the wMaxPacketSize represent the 436cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * maximum packet size. 4371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * For SS devices the wMaxPacketSize is limited by 1024. 438cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman */ 43929cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto max = usb_endpoint_maxp(desc) & 0x7ff; 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* drivers must not request bad settings, since lower levels 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (hardware or its drivers) may not check. some endpoints 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can't do iso, many have maxpacket limitations, etc. 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since this "hardware" driver is here to help debugging, we 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * have some extra sanity checks. (there could be more though, 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * especially for "ep9out" style fixed function ones.) 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EINVAL; 45059f08e6d2015a16fb4856f910ef0660d13a0c767Sebastian Andrzej Siewior switch (usb_endpoint_type(desc)) { 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_BULK: 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-iso") 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || strstr (ep->ep.name, "-int")) { 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 4571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 4581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (max == 1024) 4591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 4601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto done; 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max == 512) 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4649063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil goto done; 4659063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil case USB_SPEED_FULL: 4669063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil if (max == 8 || max == 16 || max == 32 || max == 64) 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* we'll fake any legal size */ 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4699063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil /* save a return statement */ 4709063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil default: 4719063ff44f081a0297085952f6760dfe1f8ca840eIngo van Lil goto done; 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_INT: 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-iso")) /* bulk is ok */ 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware might not handle all packet sizes */ 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 4791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1024) 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 64) 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 8) 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_ENDPOINT_XFER_ISOC: 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (strstr (ep->ep.name, "-bulk") 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || strstr (ep->ep.name, "-int")) 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware might not handle all packet sizes */ 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 5001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1024) 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max <= 1023) 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* save a return statement */ 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* few chips support control except on ep0 */ 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto done; 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _ep->maxpacket = max; 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = desc; 520a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (usb_ss_max_streams(_ep->comp_desc)) { 521a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (!usb_endpoint_xfer_bulk(desc)) { 522a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior dev_err(udc_dev(dum), "Can't enable stream support on " 523a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior "non-bulk ep %s\n", _ep->name); 524a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return -EINVAL; 525a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 526a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior ep->stream_en = 1; 527a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 529a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior dev_dbg(udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d stream %s\n", 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _ep->name, 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bEndpointAddress & 0x0f, 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *val; 53459f08e6d2015a16fb4856f910ef0660d13a0c767Sebastian Andrzej Siewior switch (usb_endpoint_type(desc)) { 5357c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_ENDPOINT_XFER_BULK: 5367c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "bulk"; 5377c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5387c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_ENDPOINT_XFER_ISOC: 5397c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "iso"; 5407c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5417c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_ENDPOINT_XFER_INT: 5427c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "intr"; 5437c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5447c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman default: 5457c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman val = "ctrl"; 5467c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; val; }), 548a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max, ep->stream_en ? "enabled" : "disabled"); 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* at this point real hardware should be NAKing transfers 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to that endpoint, until a buffer is queued to it. 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 553851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern ep->halted = ep->wedged = 0; 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdone: 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_disable (struct usb_ep *_ep) 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !ep->desc || _ep->name == ep0name) 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->desc = NULL; 573a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior ep->stream_en = 0; 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds nuke (dum, ep); 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 578d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "disabled %s\n", _ep->name); 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_request * 58355016f10e31bb15b85d8c500f979dfdceb37d548Al Virodummy_alloc_request (struct usb_ep *_ep, gfp_t mem_flags) 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep) 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5927039f4224d4e40b06308d5c1a97427af1a142459Eric Sesterhenn req = kzalloc(sizeof(*req), mem_flags); 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!req) 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds INIT_LIST_HEAD (&req->queue); 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &req->req; 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsdummy_free_request (struct usb_ep *_ep, struct usb_request *_req) 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep || !_req || (!ep->desc && _ep->name != ep0name)) 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = usb_request_to_dummy_request (_req); 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds WARN_ON (!list_empty (&req->queue)); 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (req); 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfifo_complete (struct usb_ep *ep, struct usb_request *req) 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 6205db539e49fc7471e23bf3c94ca304f008cb7b7f3Olav Kongasdummy_queue (struct usb_ep *_ep, struct usb_request *_req, 62155016f10e31bb15b85d8c500f979dfdceb37d548Al Viro gfp_t mem_flags) 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 626cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = usb_request_to_dummy_request (_req); 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_req || !list_empty (&req->queue) || !_req->complete) 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || (!ep->desc && _ep->name != ep0name)) 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 638719e52cbc7b826fae9501f3b86b8cbc25a4c5268Sebastian Andrzej Siewior dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 639cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum->driver || !is_enabled(dum_hcd)) 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 643d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "ep %p queue req %p to %s, len %d buf %p\n", 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, _req, _ep->name, _req->length, _req->buf); 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -EINPROGRESS; 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = 0; 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* implement an emulated single-request FIFO */ 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&dum->fifo_req.queue) && 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_empty (&ep->queue) && 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->length <= FIFO_SIZE) { 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req = &dum->fifo_req; 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req = *_req; 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.buf = dum->fifo_buf; 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy (dum->fifo_buf, _req->buf, _req->length); 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.context = dum; 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete = fifo_complete; 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 663c728df70ab0dd59b8ccdc3c611ea88925e6697dbDavid Brownell list_add_tail(&req->queue, &ep->queue); 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->actual = _req->length; 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = 0; 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 669c728df70ab0dd59b8ccdc3c611ea88925e6697dbDavid Brownell } else 670c728df70ab0dd59b8ccdc3c611ea88925e6697dbDavid Brownell list_add_tail(&req->queue, &ep->queue); 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* real hardware would likely enable transfers here, in case 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it'd been left NAKing. 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_dequeue (struct usb_ep *_ep, struct usb_request *_req) 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = -EINVAL; 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req = NULL; 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep || !_req) 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 695b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern local_irq_save (flags); 696b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern spin_lock (&dum->lock); 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (&req->req == _req) { 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->status = -ECONNRESET; 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 0; 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 705b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern spin_unlock (&dum->lock); 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval == 0) { 708d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "dequeued req %p from %s, len %d buf %p\n", 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req, _ep->name, _req->length, _req->buf); 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _req->complete (_ep, _req); 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 713b4dbda1a22d236842b75be4e2679a96a4fd72632Alan Stern local_irq_restore (flags); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 718851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sterndummy_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged) 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep; 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!_ep) 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = usb_ep_to_dummy_ep (_ep); 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum = ep_to_dummy (ep); 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver) 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ESHUTDOWN; 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!value) 730851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern ep->halted = ep->wedged = 0; 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (ep->desc && (ep->desc->bEndpointAddress & USB_DIR_IN) && 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !list_empty (&ep->queue)) 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EAGAIN; 734851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern else { 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 1; 736851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern if (wedged) 737851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern ep->wedged = 1; 738851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern } 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME clear emulated data toggle too */ 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 743851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sternstatic int 744851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sterndummy_set_halt(struct usb_ep *_ep, int value) 745851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern{ 746851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern return dummy_set_halt_and_wedge(_ep, value, 0); 747851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern} 748851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern 749851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Sternstatic int dummy_set_wedge(struct usb_ep *_ep) 750851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern{ 751851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern if (!_ep || _ep->name == ep0name) 752851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern return -EINVAL; 753851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern return dummy_set_halt_and_wedge(_ep, 1, 1); 754851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern} 755851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_ep_ops dummy_ep_ops = { 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .enable = dummy_enable, 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disable = dummy_disable, 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .alloc_request = dummy_alloc_request, 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .free_request = dummy_free_request, 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .queue = dummy_queue, 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .dequeue = dummy_dequeue, 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_halt = dummy_set_halt, 767851a526dcf97964265cadcc6664a9f0ff7c143c7Alan Stern .set_wedge = dummy_set_wedge, 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* there are both host and device side versions of this call ... */ 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_g_get_frame (struct usb_gadget *_gadget) 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timeval tv; 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_gettimeofday (&tv); 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return tv.tv_usec / 1000; 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_wakeup (struct usb_gadget *_gadget) 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 783cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 785cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = gadget_to_dummy_hcd(_gadget); 786cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!(dum_hcd->dum->devstatus & ((1 << USB_DEVICE_B_HNP_ENABLE) 7875742b0c95026c817d9c266174ca39a909e8d38caAlan Stern | (1 << USB_DEVICE_REMOTE_WAKEUP)))) 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 789cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_CONNECTION) == 0) 790391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ENOLINK; 791cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_SUSPEND) == 0 && 792cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state != DUMMY_RH_SUSPENDED) 793391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -EIO; 794391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 795391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* FIXME: What if the root hub is suspended but the port isn't? */ 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* hub notices our request, issues downstream resume, etc */ 798cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->resuming = 1; 799cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->re_timeout = jiffies + msecs_to_jiffies(20); 800cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dummy_hcd_to_hcd(dum_hcd)->rh_timer, dum_hcd->re_timeout); 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_set_selfpowered (struct usb_gadget *_gadget, int value) 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 808cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum = (gadget_to_dummy_hcd(_gadget))->dum; 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value) 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus |= (1 << USB_DEVICE_SELF_POWERED); 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus &= ~(1 << USB_DEVICE_SELF_POWERED); 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 816d262127c330b852ce4b210a0b1b06e69d4d87704Sebastian Andrzej Siewiorstatic void dummy_udc_update_ep0(struct dummy *dum) 817b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior{ 818c688419141ad6134d7973fcf182e3719e98d7491Sebastian Andrzej Siewior if (dum->gadget.speed == USB_SPEED_SUPER) 819b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->ep[0].ep.maxpacket = 9; 820c688419141ad6134d7973fcf182e3719e98d7491Sebastian Andrzej Siewior else 821b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->ep[0].ep.maxpacket = 64; 822b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior} 823b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 824f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Sternstatic int dummy_pullup (struct usb_gadget *_gadget, int value) 825f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern{ 826d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior struct dummy_hcd *dum_hcd; 827f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern struct dummy *dum; 828f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern unsigned long flags; 829f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 830b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum = gadget_dev_to_dummy(&_gadget->dev); 831b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 832b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior if (value && dum->driver) { 833b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior if (mod_data.is_super_speed) 8347177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz dum->gadget.speed = dum->driver->max_speed; 835b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior else if (mod_data.is_high_speed) 836b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, 8377177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz dum->driver->max_speed); 838b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior else 839b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dum->gadget.speed = USB_SPEED_FULL; 840d262127c330b852ce4b210a0b1b06e69d4d87704Sebastian Andrzej Siewior dummy_udc_update_ep0(dum); 841b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 8427177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (dum->gadget.speed < dum->driver->max_speed) 843b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior dev_dbg(udc_dev(dum), "This device can perform faster" 8447177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz " if you connect it to a %s port...\n", 8457177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz usb_speed_string(dum->driver->max_speed)); 846b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior } 847d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior dum_hcd = gadget_to_dummy_hcd(_gadget); 848d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior 849f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_lock_irqsave (&dum->lock, flags); 850f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern dum->pullup = (value != 0); 851d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior set_link_state(dum_hcd); 852f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern spin_unlock_irqrestore (&dum->lock, flags); 853b5738413c96126e8191bc506b403cd55950b8f9aSebastian Andrzej Siewior 854d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); 855f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern return 0; 856f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern} 857f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 858aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_start(struct usb_gadget *g, 859aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver); 860aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_stop(struct usb_gadget *g, 861aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver); 8620f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const struct usb_gadget_ops dummy_ops = { 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame = dummy_g_get_frame, 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .wakeup = dummy_wakeup, 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_selfpowered = dummy_set_selfpowered, 867f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern .pullup = dummy_pullup, 868aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior .udc_start = dummy_udc_start, 869aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior .udc_stop = dummy_udc_stop, 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* "function" sysfs attribute */ 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 87610523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_function (struct device *dev, struct device_attribute *attr, char *buf) 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum = gadget_dev_to_dummy (dev); 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!dum->driver || !dum->driver->function) 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return scnprintf (buf, PAGE_SIZE, "%s\n", dum->driver->function); 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 884cc095b0b5b653dca3e106710a72ba28b5bb7456bAlan Sternstatic DEVICE_ATTR (function, S_IRUGO, show_function, NULL); 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Driver registration/unregistration. 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is basically hardware-specific; there's usually only one real USB 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * device (not host) controller since that's how USB devices are intended 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to work. So most implementations of these api calls will rely on the 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fact that only one driver will ever bind to the hardware. But curious 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * hardware can be built with discrete components, so the gadget API doesn't 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * require that assumption. 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * For this emulator, it might be convenient to create a usb slave device 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for each driver that registers: just add to a big root hub. 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 902aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_start(struct usb_gadget *g, 903aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver) 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 905aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); 906aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy *dum = dum_hcd->dum; 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9087177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (driver->max_speed == USB_SPEED_UNKNOWN) 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SLAVE side init ... the layer above hardware, which 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * can't enumerate without help from the driver we're binding. 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9155742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->devstatus = 0; 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = driver; 919d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "binding gadget driver '%s'\n", 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 924aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewiorstatic int dummy_udc_stop(struct usb_gadget *g, 925aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct usb_gadget_driver *driver) 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 927aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(g); 928aa0747394337e50533badd46e8fb7106bad3311eSebastian Andrzej Siewior struct dummy *dum = dum_hcd->dum; 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 930d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "unregister gadget driver '%s'\n", 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds driver->driver.name); 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->driver = NULL; 9342542787430fc46b4e07e0da4c6ec80ed230032e5Sebastian Andrzej Siewior 9352542787430fc46b4e07e0da4c6ec80ed230032e5Sebastian Andrzej Siewior dummy_pullup(&dum->gadget, 0); 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_enabled 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 941d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/* The gadget structure is stored inside the hcd structure and will be 942d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern * released along with it. */ 943d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternstatic void 944d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sterndummy_gadget_release (struct device *dev) 945d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 946cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return; 947d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 948d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9490fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewiorstatic void init_dummy_udc_hw(struct dummy *dum) 9500fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior{ 9510fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior int i; 9520fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9530fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior INIT_LIST_HEAD(&dum->gadget.ep_list); 9540fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior for (i = 0; i < DUMMY_ENDPOINTS; i++) { 9550fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior struct dummy_ep *ep = &dum->ep[i]; 9560fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9570fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior if (!ep_name[i]) 9580fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior break; 9590fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->ep.name = ep_name[i]; 9600fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->ep.ops = &dummy_ep_ops; 9610fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior list_add_tail(&ep->ep.ep_list, &dum->gadget.ep_list); 9620fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->halted = ep->wedged = ep->already_seen = 9630fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->setup_stage = 0; 9640fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->ep.maxpacket = ~0; 965c688419141ad6134d7973fcf182e3719e98d7491Sebastian Andrzej Siewior ep->ep.max_streams = 16; 9660fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->last_io = jiffies; 9670fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->gadget = &dum->gadget; 9680fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior ep->desc = NULL; 9690fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior INIT_LIST_HEAD(&ep->queue); 9700fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior } 9710fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9720fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior dum->gadget.ep0 = &dum->ep[0].ep; 9730fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior list_del_init(&dum->ep[0].ep.ep_list); 9740fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior INIT_LIST_HEAD(&dum->fifo_req.queue); 975f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior 976f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior#ifdef CONFIG_USB_OTG 977f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior dum->gadget.is_otg = 1; 978f8744d40ca12d54f35c56831040683d52e765bf8Sebastian Andrzej Siewior#endif 9790fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior} 9800fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 9818364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_udc_probe (struct platform_device *pdev) 982d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 983cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = &the_controller; 984d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern int rc; 985d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 986d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.name = gadget_name; 987d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.ops = &dummy_ops; 988d327ab5b6d660d6fe22b073b743fde1668e593bbMichal Nazarewicz dum->gadget.max_speed = USB_SPEED_SUPER; 989d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9900031a06e2f07ab0d1bc98c31dbb6801f95f4bf01Kay Sievers dev_set_name(&dum->gadget.dev, "gadget"); 9918364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern dum->gadget.dev.parent = &pdev->dev; 992d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dum->gadget.dev.release = dummy_gadget_release; 993d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern rc = device_register (&dum->gadget.dev); 99475d87cdf3cefd2744fabd3f2a558c49cdf36238bRahul Ruikar if (rc < 0) { 99575d87cdf3cefd2744fabd3f2a558c49cdf36238bRahul Ruikar put_device(&dum->gadget.dev); 996d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 99775d87cdf3cefd2744fabd3f2a558c49cdf36238bRahul Ruikar } 998d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 9990fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior init_dummy_udc_hw(dum); 10000fb5759952e934dd5ff25fd79f45cb5d69c8d2d1Sebastian Andrzej Siewior 10010f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior rc = usb_add_gadget_udc(&pdev->dev, &dum->gadget); 10020f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior if (rc < 0) 10030f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior goto err_udc; 10040f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 1005efd54a364121f61b2050b1df5ecb1b8329c4eabaAlan Stern rc = device_create_file (&dum->gadget.dev, &dev_attr_function); 1006efd54a364121f61b2050b1df5ecb1b8329c4eabaAlan Stern if (rc < 0) 10070f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior goto err_dev; 10080f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior platform_set_drvdata(pdev, dum); 10090f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior return rc; 10100f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 10110f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewiorerr_dev: 10120f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&dum->gadget); 10130f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewiorerr_udc: 10140f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior device_unregister(&dum->gadget.dev); 1015d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return rc; 1016d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 1017d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 10188364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_udc_remove (struct platform_device *pdev) 1019d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern{ 10208364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern struct dummy *dum = platform_get_drvdata (pdev); 1021d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 10220f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&dum->gadget); 10238364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern platform_set_drvdata (pdev, NULL); 1024d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_remove_file (&dum->gadget.dev, &dev_attr_function); 1025d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern device_unregister (&dum->gadget.dev); 1026d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 1027d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern} 1028d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 1029fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewiorstatic void dummy_udc_pm(struct dummy *dum, struct dummy_hcd *dum_hcd, 1030fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior int suspend) 1031391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1032fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior spin_lock_irq(&dum->lock); 1033fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dum->udc_suspended = suspend; 1034d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior set_link_state(dum_hcd); 1035fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior spin_unlock_irq(&dum->lock); 1036fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior} 1037fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior 1038fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewiorstatic int dummy_udc_suspend(struct platform_device *pdev, pm_message_t state) 1039fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior{ 1040fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy *dum = platform_get_drvdata(pdev); 1041fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 1042391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1043fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dev_dbg(&pdev->dev, "%s\n", __func__); 1044fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dummy_udc_pm(dum, dum_hcd, 1); 1045d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); 1046391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1047391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1048391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1049fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewiorstatic int dummy_udc_resume(struct platform_device *pdev) 1050391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 1051fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy *dum = platform_get_drvdata(pdev); 1052fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior struct dummy_hcd *dum_hcd = gadget_to_dummy_hcd(&dum->gadget); 1053391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1054fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dev_dbg(&pdev->dev, "%s\n", __func__); 1055fc0b721f27beb5464d9fb5e521f5cd68127dd14eSebastian Andrzej Siewior dummy_udc_pm(dum, dum_hcd, 0); 1056d8a14a85c72faf1bdcbbc12255361aaa9cb79ff5Sebastian Andrzej Siewior usb_hcd_poll_rh_status(dummy_hcd_to_hcd(dum_hcd)); 1057391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 1058391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 1059391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 10603ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell Kingstatic struct platform_driver dummy_udc_driver = { 1061d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_udc_probe, 1062d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_udc_remove, 1063391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_udc_suspend, 1064391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_udc_resume, 10653ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .driver = { 10663ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .name = (char *) gadget_name, 10673ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .owner = THIS_MODULE, 10683ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King }, 1069d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 1070d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1073a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewiorstatic unsigned int dummy_get_ep_idx(const struct usb_endpoint_descriptor *desc) 1074a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior{ 1075a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned int index; 1076a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1077a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior index = usb_endpoint_num(desc) << 1; 1078a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (usb_endpoint_dir_in(desc)) 1079a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior index |= 1; 1080a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return index; 1081a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior} 1082a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* MASTER/HOST SIDE DRIVER 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this uses the hcd framework to hook up to host side drivers. 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * its root hub will only have one device, otherwise it acts like 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * a normal host controller. 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * when urbs are queued, they're just stuck on a list that we 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scan in a timer callback. that callback connects writes from 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the host with reads from the device, and so on, based on the 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * usb 2.0 rules. 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 10941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1095a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewiorstatic int dummy_ep_stream_en(struct dummy_hcd *dum_hcd, struct urb *urb) 1096a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior{ 1097a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior const struct usb_endpoint_descriptor *desc = &urb->ep->desc; 1098a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior u32 index; 1099a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1100a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (!usb_endpoint_xfer_bulk(desc)) 1101a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return 0; 1102a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1103a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior index = dummy_get_ep_idx(desc); 1104a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return (1 << index) & dum_hcd->stream_en_ep; 1105a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior} 1106a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1107a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior/* 1108a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior * The max stream number is saved as a nibble so for the 30 possible endpoints 1109a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior * we only 15 bytes of memory. Therefore we are limited to max 16 streams (0 1110a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior * means we use only 1 stream). The maximum according to the spec is 16bit so 1111a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior * if the 16 stream limit is about to go, the array size should be incremented 1112a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior * to 30 elements of type u16. 1113a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior */ 1114a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewiorstatic int get_max_streams_for_pipe(struct dummy_hcd *dum_hcd, 1115a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned int pipe) 1116a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior{ 1117a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior int max_streams; 1118a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1119a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_streams = dum_hcd->num_stream[usb_pipeendpoint(pipe)]; 1120a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (usb_pipeout(pipe)) 1121a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_streams >>= 4; 1122a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior else 1123a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_streams &= 0xf; 1124a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_streams++; 1125a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return max_streams; 1126a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior} 1127a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1128a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewiorstatic void set_max_streams_for_pipe(struct dummy_hcd *dum_hcd, 1129a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned int pipe, unsigned int streams) 1130a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior{ 1131a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior int max_streams; 1132a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1133a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior streams--; 1134a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_streams = dum_hcd->num_stream[usb_pipeendpoint(pipe)]; 1135a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (usb_pipeout(pipe)) { 1136a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior streams <<= 4; 1137a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_streams &= 0xf; 1138a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } else { 1139a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_streams &= 0xf0; 1140a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 1141a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_streams |= streams; 1142a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior dum_hcd->num_stream[usb_pipeendpoint(pipe)] = max_streams; 1143a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior} 1144a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1145a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewiorstatic int dummy_validate_stream(struct dummy_hcd *dum_hcd, struct urb *urb) 1146a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior{ 1147a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned int max_streams; 1148a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior int enabled; 1149a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1150a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior enabled = dummy_ep_stream_en(dum_hcd, urb); 1151a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (!urb->stream_id) { 1152a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (enabled) 1153a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return -EINVAL; 1154a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return 0; 1155a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 1156a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (!enabled) 1157a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return -EINVAL; 1158a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1159a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_streams = get_max_streams_for_pipe(dum_hcd, 1160a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior usb_pipeendpoint(urb->pipe)); 1161a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (urb->stream_id > max_streams) { 1162a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior dev_err(dummy_dev(dum_hcd), "Stream id %d is out of range.\n", 1163a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior urb->stream_id); 1164a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior BUG(); 1165a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return -EINVAL; 1166a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 1167a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return 0; 1168a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior} 1169a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 11701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_urb_enqueue ( 11711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 11721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb, 117355016f10e31bb15b85d8c500f979dfdceb37d548Al Viro gfp_t mem_flags 11741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 1175cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 11761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 11771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1178e9df41c5c5899259541dc928872cad4d07b82076Alan Stern int rc; 11791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp = kmalloc (sizeof *urbp, mem_flags); 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!urbp) 11821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 11831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urbp->urb = urb; 118414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior urbp->miter_started = 0; 11851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1186cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 1187cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 1188a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1189a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior rc = dummy_validate_stream(dum_hcd, urb); 1190a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (rc) { 1191a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior kfree(urbp); 1192a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior goto done; 1193a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 1194a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 1195e9df41c5c5899259541dc928872cad4d07b82076Alan Stern rc = usb_hcd_link_urb_to_ep(hcd, urb); 1196e9df41c5c5899259541dc928872cad4d07b82076Alan Stern if (rc) { 1197e9df41c5c5899259541dc928872cad4d07b82076Alan Stern kfree(urbp); 1198e9df41c5c5899259541dc928872cad4d07b82076Alan Stern goto done; 1199e9df41c5c5899259541dc928872cad4d07b82076Alan Stern } 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1201cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum_hcd->udev) { 1202cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->udev = urb->dev; 1203cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_get_dev(dum_hcd->udev); 1204cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } else if (unlikely(dum_hcd->udev != urb->dev)) 1205cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_err(dummy_dev(dum_hcd), "usb_device address has changed!\n"); 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1207cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman list_add_tail(&urbp->urbp_list, &dum_hcd->urbp_list); 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->hcpriv = urbp; 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipetype (urb->pipe) == PIPE_CONTROL) 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 1; /* mark as a new urb */ 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* kick the scheduler, it'll do the rest */ 1213cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!timer_pending(&dum_hcd->timer)) 1214cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies + 1); 12151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1216e9df41c5c5899259541dc928872cad4d07b82076Alan Stern done: 1217cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 1218e9df41c5c5899259541dc928872cad4d07b82076Alan Stern return rc; 12191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1221e9df41c5c5899259541dc928872cad4d07b82076Alan Sternstatic int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) 12221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1223cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 1224391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern unsigned long flags; 1225e9df41c5c5899259541dc928872cad4d07b82076Alan Stern int rc; 1226391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1227391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* giveback happens automatically in timer callback, 1228391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern * so make sure the callback happens */ 1229cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 1230cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 1231e9df41c5c5899259541dc928872cad4d07b82076Alan Stern 1232e9df41c5c5899259541dc928872cad4d07b82076Alan Stern rc = usb_hcd_check_unlink_urb(hcd, urb, status); 1233cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && 1234cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman !list_empty(&dum_hcd->urbp_list)) 1235cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies); 1236e9df41c5c5899259541dc928872cad4d07b82076Alan Stern 1237cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 1238e9df41c5c5899259541dc928872cad4d07b82076Alan Stern return rc; 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1241a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewiorstatic int dummy_perform_transfer(struct urb *urb, struct dummy_request *req, 1242a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior u32 len) 1243a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior{ 1244a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior void *ubuf, *rbuf; 124514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior struct urbp *urbp = urb->hcpriv; 1246a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior int to_host; 124714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior struct sg_mapping_iter *miter = &urbp->miter; 124814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior u32 trans = 0; 124914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior u32 this_sg; 125014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior bool next_sg; 1251a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 1252a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior to_host = usb_pipein(urb->pipe); 1253a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior rbuf = req->req.buf + req->req.actual; 1254a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 125514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (!urb->num_sgs) { 125614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior ubuf = urb->transfer_buffer + urb->actual_length; 125714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (to_host) 125814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior memcpy(ubuf, rbuf, len); 125914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior else 126014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior memcpy(rbuf, ubuf, len); 126114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior return len; 126214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 126314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 126414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (!urbp->miter_started) { 126514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior u32 flags = SG_MITER_ATOMIC; 126614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 126714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (to_host) 126814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior flags |= SG_MITER_TO_SG; 126914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior else 127014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior flags |= SG_MITER_FROM_SG; 127114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 127214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior sg_miter_start(miter, urb->sg, urb->num_sgs, flags); 127314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior urbp->miter_started = 1; 127414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 127514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior next_sg = sg_miter_next(miter); 127614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (next_sg == false) { 127714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior WARN_ON_ONCE(1); 127814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior return -EINVAL; 127914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 128014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior do { 128114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior ubuf = miter->addr; 128214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior this_sg = min_t(u32, len, miter->length); 128314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior miter->consumed = this_sg; 128414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior trans += this_sg; 128514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 128614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (to_host) 128714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior memcpy(ubuf, rbuf, this_sg); 128814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior else 128914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior memcpy(rbuf, ubuf, this_sg); 129014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior len -= this_sg; 129114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 129214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (!len) 129314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior break; 129414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior next_sg = sg_miter_next(miter); 129514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (next_sg == false) { 129614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior WARN_ON_ONCE(1); 129714fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior return -EINVAL; 129814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 129914fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 130014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior rbuf += this_sg; 130114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } while (1); 130214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior 130314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior sg_miter_stop(miter); 130414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior return trans; 1305a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior} 1306a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* transfer up to a frame's worth; caller must own lock */ 1308a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewiorstatic int transfer(struct dummy_hcd *dum_hcd, struct urb *urb, 1309a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior struct dummy_ep *ep, int limit, int *status) 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1311a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior struct dummy *dum = dum_hcd->dum; 13121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 13131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldstop: 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* if there's no request queued, the device is NAKing; return */ 13161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned host_len, dev_len, len; 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int is_short, to_host; 13191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rescan = 0; 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1321a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (dummy_ep_stream_en(dum_hcd, urb)) { 1322a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if ((urb->stream_id != req->req.stream_id)) 1323a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior continue; 1324a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 1325a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 13261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1..N packets of ep->ep.maxpacket each ... the last one 13271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * may be short (including zero length). 13281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 13291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * writer can send a zlp explicitly (length 0) or implicitly 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (length mod maxpacket zero, and 'zero' flag); they always 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * terminate reads. 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds host_len = urb->transfer_buffer_length - urb->actual_length; 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_len = req->req.length - req->req.actual; 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (host_len, dev_len); 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME update emulated data toggle too */ 13381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to_host = usb_pipein (urb->pipe); 13401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely (len == 0)) 13411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = 1; 13421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else { 13431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* not enough bandwidth left? */ 13441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (limit < ep->ep.maxpacket && limit < len) 13451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = min (len, (unsigned) limit); 13471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len == 0) 13481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 13491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* use an extra pass for the final short packet */ 13511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len > ep->ep.maxpacket) { 13521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 13531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len -= (len % ep->ep.maxpacket); 13541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is_short = (len % ep->ep.maxpacket) != 0; 13561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1357a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior len = dummy_perform_transfer(urb, req, len); 1358a04ce20d9f5e9484ed3879e1290bd05933cbbe2aSebastian Andrzej Siewior 13591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 136014fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior if (len < 0) { 136114fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior req->req.status = len; 136214fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } else { 136314fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior limit -= len; 136414fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior urb->actual_length += len; 136514fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior req->req.actual += len; 136614fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior } 13671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* short packets terminate, maybe with overflow/underflow. 13701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it's only really an error to write too much. 13711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 13721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * partially filling a buffer optionally blocks queue advances 13731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (so completion handlers can clean up the queue) but we don't 1374b0d9efba3ec53468984aecef8eeaf079089f2e5aAlan Stern * need to emulate such data-in-flight. 13751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 13761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (is_short) { 13771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len == dev_len) { 13781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 13794d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 13801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (to_host) { 13811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 13821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dev_len > host_len) 13834d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = -EOVERFLOW; 13841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 13854d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 13861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!to_host) { 13874d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 13881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (host_len > dev_len) 13891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 13901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 13911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 13921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 13931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* many requests terminate without a short packet */ 13951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 13961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.length == req->req.actual 13971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !req->req.zero) 13981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = 0; 13991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->transfer_buffer_length == urb->actual_length 14001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds && !(urb->transfer_flags 14014d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern & URB_ZERO_PACKET)) 14024d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern *status = 0; 14031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* device side completion --> continuable */ 14061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (req->req.status != -EINPROGRESS) { 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 14081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* requests might have been unlinked... */ 14141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rescan = 1; 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* host side completion --> terminate */ 14184d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern if (*status != -EINPROGRESS) 14191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* rescan to continue with any other queued i/o */ 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rescan) 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto top; 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 14261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int periodic_bytes (struct dummy *dum, struct dummy_ep *ep) 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit = ep->ep.maxpacket; 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (dum->gadget.speed == USB_SPEED_HIGH) { 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int tmp; 14341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* high bandwidth mode */ 143629cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto tmp = usb_endpoint_maxp(ep->desc); 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp = (tmp >> 11) & 0x03; 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp *= 8 /* applies to entire frame */; 14391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit += limit * tmp; 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->gadget.speed == USB_SPEED_SUPER) { 144259f08e6d2015a16fb4856f910ef0660d13a0c767Sebastian Andrzej Siewior switch (usb_endpoint_type(ep->desc)) { 14431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_ENDPOINT_XFER_ISOC: 14441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Sec. 4.4.8.2 USB3.0 Spec */ 14451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman limit = 3 * 16 * 1024 * 8; 14461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_ENDPOINT_XFER_INT: 14481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Sec. 4.4.7.2 USB3.0 Spec */ 14491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman limit = 3 * 1024 * 8; 14501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_ENDPOINT_XFER_BULK: 14521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman default: 14531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 14541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 14551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return limit; 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1459cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman#define is_active(dum_hcd) ((dum_hcd->port_status & \ 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE | \ 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds USB_PORT_STAT_SUSPEND)) \ 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds == (USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE)) 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct dummy_ep *find_endpoint (struct dummy *dum, u8 address) 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!is_active((dum->gadget.speed == USB_SPEED_SUPER ? 14691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum->ss_hcd : dum->hs_hcd))) 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((address & ~USB_DIR_IN) == 0) 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &dum->ep [0]; 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 1; i < DUMMY_ENDPOINTS; i++) { 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = &dum->ep [i]; 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep->desc) 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->desc->bEndpointAddress == address) 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ep; 14801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef is_active 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_Request (USB_TYPE_STANDARD | USB_RECIP_DEVICE) 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Dev_InRequest (Dev_Request | USB_DIR_IN) 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_Request (USB_TYPE_STANDARD | USB_RECIP_INTERFACE) 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Intf_InRequest (Intf_Request | USB_DIR_IN) 14901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_Request (USB_TYPE_STANDARD | USB_RECIP_ENDPOINT) 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define Ep_InRequest (Ep_Request | USB_DIR_IN) 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14938be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman 14948be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman/** 14958be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * handle_control_request() - handles all control transfers 14968be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @dum: pointer to dummy (the_controller) 14978be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @urb: the urb request to handle 14988be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @setup: pointer to the setup data for a USB device control 14998be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * request 15008be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * @status: pointer to request handling status 15018be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * 15028be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * Return 0 - if the request was handled 15038be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * 1 - if the request wasn't handles 15048be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * error code on error 15058be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman */ 1506cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb, 15078be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman struct usb_ctrlrequest *setup, 15088be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman int *status) 15098be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman{ 15108be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman struct dummy_ep *ep2; 1511cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = dum_hcd->dum; 15128be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman int ret_val = 1; 15138be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman unsigned w_index; 15148be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman unsigned w_value; 15158be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman 15168be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_index = le16_to_cpu(setup->wIndex); 15178be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_value = le16_to_cpu(setup->wValue); 15188be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman switch (setup->bRequest) { 15198be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_SET_ADDRESS: 15208be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType != Dev_Request) 15218be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15228be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->address = w_value; 15238be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 15248be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dev_dbg(udc_dev(dum), "set_address = %d\n", 15258be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_value); 15268be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 15278be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15288be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_SET_FEATURE: 15298be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Dev_Request) { 15308be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 15318be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman switch (w_value) { 15328be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_REMOTE_WAKEUP: 15338be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15348be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_B_HNP_ENABLE: 15358be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->gadget.b_hnp_enable = 1; 15368be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15378be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_A_HNP_SUPPORT: 15388be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->gadget.a_hnp_support = 1; 15398be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15408be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_A_ALT_HNP_SUPPORT: 15418be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->gadget.a_alt_hnp_support = 1; 15428be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U1_ENABLE: 15441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 15451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 15461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U1_ENABLED; 15471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 15481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 15491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 15501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U2_ENABLE: 15511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 15521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 15531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U2_ENABLED; 15541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 15551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 15561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 15571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_LTM_ENABLE: 15581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 15591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 15601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_LTM_ENABLED; 15611cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 15621cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 15631cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 15648be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman default: 15658be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 15668be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15678be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (ret_val == 0) { 15688be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->devstatus |= (1 << w_value); 15698be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 15708be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15718be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else if (setup->bRequestType == Ep_Request) { 15728be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman /* endpoint halt */ 15738be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2 = find_endpoint(dum, w_index); 15748be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2 || ep2->ep.name == ep0name) { 15758be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 15768be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15778be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15788be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2->halted = 1; 15798be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 15808be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 15818be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 15828be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15838be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_CLEAR_FEATURE: 15848be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Dev_Request) { 15858be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 15868be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman switch (w_value) { 15878be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_DEVICE_REMOTE_WAKEUP: 15888be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman w_value = USB_DEVICE_REMOTE_WAKEUP; 15898be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 15901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U1_ENABLE: 15911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 15921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 15931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U1_ENABLED; 15941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 15951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 15961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 15971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_U2_ENABLE: 15981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 15991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 16001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_U2_ENABLED; 16011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 16021cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 16031cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 16041cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_DEVICE_LTM_ENABLE: 16051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dummy_hcd_to_hcd(dum_hcd)->speed == 16061cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman HCD_USB3) 16071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman w_value = USB_DEV_STAT_LTM_ENABLED; 16081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 16091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ret_val = -EOPNOTSUPP; 16101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 16118be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman default: 16128be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 16138be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 16148be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 16158be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (ret_val == 0) { 16168be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman dum->devstatus &= ~(1 << w_value); 16178be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 16188be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 16198be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else if (setup->bRequestType == Ep_Request) { 16208be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman /* endpoint halt */ 16218be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2 = find_endpoint(dum, w_index); 16228be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2) { 16238be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 16248be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 16258be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 16268be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2->wedged) 16278be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2->halted = 0; 16288be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 16298be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 16308be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 16318be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 16328be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman case USB_REQ_GET_STATUS: 16338be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Dev_InRequest 16348be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman || setup->bRequestType == Intf_InRequest 16358be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman || setup->bRequestType == Ep_InRequest) { 16368be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman char *buf; 16378be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman /* 16388be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * device: remote wakeup, selfpowered 16398be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * interface: nothing 16408be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman * endpoint: halt 16418be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman */ 16428be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf = (char *)urb->transfer_buffer; 16438be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (urb->transfer_buffer_length > 0) { 16448be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (setup->bRequestType == Ep_InRequest) { 16458be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ep2 = find_endpoint(dum, w_index); 16468be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (!ep2) { 16478be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = -EOPNOTSUPP; 16488be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 16498be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 16508be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[0] = ep2->halted; 16518be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else if (setup->bRequestType == 16528be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman Dev_InRequest) { 16538be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[0] = (u8)dum->devstatus; 16548be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } else 16558be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[0] = 0; 16568be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 16578be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman if (urb->transfer_buffer_length > 1) 16588be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman buf[1] = 0; 16598be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman urb->actual_length = min_t(u32, 2, 16608be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman urb->transfer_buffer_length); 16618be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman ret_val = 0; 16628be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman *status = 0; 16638be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 16648be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman break; 16658be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman } 16668be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman return ret_val; 16678be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman} 16688be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* drive both sides of the transfers; looks like irq handlers to 16701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * both drivers except the callbacks aren't in_irq(). 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1672cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic void dummy_timer(unsigned long _dum_hcd) 16731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1674cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = (struct dummy_hcd *) _dum_hcd; 1675cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum = dum_hcd->dum; 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp, *tmp; 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int limit, total; 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* simplistic model for one frame's bandwidth */ 16821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (dum->gadget.speed) { 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_LOW: 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 8/*bytes*/ * 12/*packets*/; 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_FULL: 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 64/*bytes*/ * 19/*packets*/; 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_SPEED_HIGH: 16901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds total = 512/*bytes*/ * 13/*packets*/ * 8/*uframes*/; 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 16921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 16931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Bus speed is 500000 bytes/ms, so use a little less */ 16941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman total = 490000; 16951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1697cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_err(dummy_dev(dum_hcd), "bogus device speed\n"); 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME if HZ != 1000 this will probably misbehave ... */ 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* look at each urb queued by the host side driver */ 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave (&dum->lock, flags); 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1706cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!dum_hcd->udev) { 1707cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_err(dummy_dev(dum_hcd), 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "timer fired with no URBs pending?\n"); 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 17111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < DUMMY_ENDPOINTS; i++) { 17141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep_name [i]) 17151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 17161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dum->ep [i].already_seen = 0; 17171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsrestart: 1720cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman list_for_each_entry_safe(urbp, tmp, &dum_hcd->urbp_list, urbp_list) { 17211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urb *urb; 17221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_request *req; 17231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 address; 17241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy_ep *ep = NULL; 17251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int type; 17264d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern int status = -EINPROGRESS; 17271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb = urbp->urb; 1729eb23105462304fd35571fd0cab1de7aec79a9ec5Alan Stern if (urb->unlinked) 17301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 1731cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman else if (dum_hcd->rh_state != DUMMY_RH_RUNNING) 1732391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern continue; 17331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = usb_pipetype (urb->pipe); 17341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* used up this frame's non-periodic bandwidth? 17361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FIXME there's infinite bandwidth for control and 17371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * periodic transfers ... unrealistic. 17381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (total <= 0 && type == PIPE_BULK) 17401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 17411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* find the gadget's ep for this request (if configured) */ 17431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address = usb_pipeendpoint (urb->pipe); 17441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_pipein (urb->pipe)) 17451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address |= USB_DIR_IN; 17461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep = find_endpoint(dum, address); 17471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!ep) { 17481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set_configuration() disagreement */ 1749cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 17501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "no ep configured for urb %p\n", 17511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb); 17524d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -EPROTO; 17531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 17541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->already_seen) 17571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 17581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 1; 17591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && urb->error_count) { 17601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 1; /* a new urb */ 17611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->error_count = 0; 17621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep->halted && !ep->setup_stage) { 17641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTE: must not be iso! */ 1765cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), "ep %s halted, urb %p\n", 17661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->ep.name, urb); 17674d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -EPIPE; 17681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 17691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME make sure both ends agree on maxpacket */ 17711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* handle control requests */ 17731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep == &dum->ep [0] && ep->setup_stage) { 17741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_ctrlrequest setup; 17751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int value = 1; 17761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds setup = *(struct usb_ctrlrequest*) urb->setup_packet; 17781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* paranoia, in case of stale queued data */ 17791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_for_each_entry (req, &ep->queue, queue) { 17801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init (&req->queue); 17811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.status = -EOVERFLOW; 1782d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), "stale req = %p\n", 17831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req); 17841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 17861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->req.complete (&ep->ep, &req->req); 17871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 17881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = 0; 17891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 17901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 17911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver never sees set_address or operations 17931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * on standard feature flags. some hardware doesn't 17941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * even expose them. 17951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 17961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 17971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->setup_stage = 0; 17981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->halted = 0; 17991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1800cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman value = handle_control_request(dum_hcd, urb, &setup, 18018be8a9d3d16a25645b7869e4544a9d0ec386966aTatyana Brokhman &status); 18021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gadget driver handles all other requests. block 18041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * until setup() returns; no reentrancy issues etc. 18051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value > 0) { 18071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 18081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = dum->driver->setup (&dum->gadget, 18091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &setup); 18101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 18111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value >= 0) { 18131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* no delays (max 64KB data stage) */ 18141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = 64*1024; 18151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto treat_control_like_bulk; 18161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* error, see below */ 18181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value < 0) { 18211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (value != -EOPNOTSUPP) 1822d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern dev_dbg (udc_dev(dum), 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "setup --> %d\n", 18241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value); 18254d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -EPIPE; 18261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length = 0; 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto return_urb; 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* non-control requests */ 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = total; 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_ISOCHRONOUS: 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 18371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * use urb->iso_frame_desc[i]. 18381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete whether or not ep has requests queued. 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * report random errors, to debug drivers. 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 18424d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern status = -ENOSYS; 18431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case PIPE_INTERRUPT: 18461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME is it urb->interval since the last xfer? 18471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this almost certainly polls too fast. 18481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds limit = max (limit, periodic_bytes (dum, ep)); 18501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FALLTHROUGH */ 18511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // case PIPE_BULK: case PIPE_CONTROL: 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds treat_control_like_bulk: 18551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->last_io = jiffies; 1856a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior total = transfer(dum_hcd, urb, ep, limit, &status); 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* incomplete transfer? */ 18614d2f110c51eec853c50f68cf068888a77551c8d3Alan Stern if (status == -EINPROGRESS) 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsreturn_urb: 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del (&urbp->urbp_list); 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree (urbp); 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ep) 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep->already_seen = ep->setup_stage = 0; 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1870cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_hcd_unlink_urb_from_ep(dummy_hcd_to_hcd(dum_hcd), urb); 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock (&dum->lock); 1872cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_hcd_giveback_urb(dummy_hcd_to_hcd(dum_hcd), urb, status); 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock (&dum->lock); 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto restart; 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1878cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (list_empty(&dum_hcd->urbp_list)) { 1879cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_put_dev(dum_hcd->udev); 1880cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->udev = NULL; 1881cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { 1882391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern /* want a 1 msec delay here */ 1883cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore (&dum->lock, flags); 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 18901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PORT_C_MASK \ 1892c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern ((USB_PORT_STAT_C_CONNECTION \ 1893c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_ENABLE \ 1894c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_SUSPEND \ 1895c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_OVERCURRENT \ 1896c2db8b5e5692a6f35913a829607ee6efde3c7cbdAlan Stern | USB_PORT_STAT_C_RESET) << 16) 18971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_status (struct usb_hcd *hcd, char *buf) 18991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1900cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 19011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 1902391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern int retval = 0; 19031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1904cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 19051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1906cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 1907541c7d432f76771079e7c295d596ea47cc6a3030Alan Stern if (!HCD_HW_ACCESSIBLE(hcd)) 1908391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern goto done; 1909f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1910cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->resuming && time_after_eq(jiffies, dum_hcd->re_timeout)) { 1911cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 1912cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; 1913cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 1914f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern } 1915f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 1916cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & PORT_C_MASK) != 0) { 19171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *buf = (1 << 1); 1918cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), "port status 0x%08x has changes\n", 1919cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status); 19201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = 1; 1921cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->rh_state == DUMMY_RH_SUSPENDED) 1922391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_resume_root_hub (hcd); 19231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1924391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Sterndone: 1925cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 19261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 19271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 19301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanss_hub_descriptor(struct usb_hub_descriptor *desc) 19311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 19321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman memset(desc, 0, sizeof *desc); 19331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->bDescriptorType = 0x2a; 19341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->bDescLength = 12; 19351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->wHubCharacteristics = cpu_to_le16(0x0001); 19361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->bNbrPorts = 1; 19371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/ 19381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman desc->u.ss.DeviceRemovable = 0xffff; 19391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 19401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 19411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic inline void 19421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldshub_descriptor (struct usb_hub_descriptor *desc) 19431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 19441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset (desc, 0, sizeof *desc); 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescriptorType = 0x29; 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bDescLength = 9; 1947fd05e720099e8eeddb378305d1a41c1445344b91Al Viro desc->wHubCharacteristics = cpu_to_le16(0x0001); 19481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds desc->bNbrPorts = 1; 1949dbe79bbe9dcb22cb3651c46f18943477141ca452John Youn desc->u.hs.DeviceRemovable[0] = 0xff; 1950dbe79bbe9dcb22cb3651c46f18943477141ca452John Youn desc->u.hs.DeviceRemovable[1] = 0xff; 19511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 19521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_hub_control ( 19541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd, 19551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 typeReq, 19561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wValue, 19571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wIndex, 19581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf, 19591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 wLength 19601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds) { 1961cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval = 0; 19631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 19641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1965541c7d432f76771079e7c295d596ea47cc6a3030Alan Stern if (!HCD_HW_ACCESSIBLE(hcd)) 1966391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return -ETIMEDOUT; 1967391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 1968cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 1969cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 1970cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 19711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (typeReq) { 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearHubFeature: 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 19741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ClearPortFeature: 19751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 19771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 19781cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_SUSPEND req not " 19801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 3.0 roothub\n"); 19811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 19821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 1983cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->port_status & USB_PORT_STAT_SUSPEND) { 19841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 20msec resume signaling */ 1985cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->resuming = 1; 1986cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->re_timeout = jiffies + 1987f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern msecs_to_jiffies(20); 19881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 19891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 19901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_POWER: 19911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 19921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum_hcd->port_status & USB_PORT_STAT_POWER) 19931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "power-off\n"); 19951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else 19961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum_hcd->port_status & 19971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SS_PORT_STAT_POWER) 19981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 19991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "power-off\n"); 2000f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 2002cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~(1 << wValue); 2003cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 20041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubDescriptor: 20071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3 && 20081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (wLength < USB_DT_SS_HUB_SIZE || 20091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman wValue != (USB_DT_SS_HUB << 8))) { 20101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "Wrong hub descriptor type for " 20121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB 3.0 roothub.\n"); 20131cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 20141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) 20161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ss_hub_descriptor((struct usb_hub_descriptor *) buf); 20171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 20181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman hub_descriptor((struct usb_hub_descriptor *) buf); 20191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetHubStatus: 2021551509d267905705f6d723e51ec706916f06b859Harvey Harrison *(__le32 *) buf = cpu_to_le32 (0); 20221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case GetPortStatus: 20241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (wIndex != 1) 20251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* whoever resets or resumes must GetPortStatus to 20281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * complete it!! 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2030cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->resuming && 2031cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman time_after_eq(jiffies, dum_hcd->re_timeout)) { 2032cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_C_SUSPEND << 16); 2033cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_SUSPEND; 20341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2035cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & USB_PORT_STAT_RESET) != 0 && 2036cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman time_after_eq(jiffies, dum_hcd->re_timeout)) { 2037cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= (USB_PORT_STAT_C_RESET << 16); 2038cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status &= ~USB_PORT_STAT_RESET; 2039cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->dum->pullup) { 2040cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_ENABLE; 20411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 20421cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed < HCD_USB3) { 20431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman switch (dum_hcd->dum->gadget.speed) { 20441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_HIGH: 20451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 20461cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_HIGH_SPEED; 20471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_LOW: 20491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->dum->gadget.ep0-> 20501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman maxpacket = 8; 20511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= 20521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_LOW_SPEED; 20531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman default: 20551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->dum->gadget.speed = 20561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SPEED_FULL; 20571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 20611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2062cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 2063cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman ((__le16 *) buf)[0] = cpu_to_le16 (dum_hcd->port_status); 2064cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman ((__le16 *) buf)[1] = cpu_to_le16 (dum_hcd->port_status >> 16); 20651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetHubFeature: 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SetPortFeature: 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (wValue) { 20711cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_LINK_STATE: 20721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 20731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_LINK_STATE req not " 20751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 20761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 20771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20781cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 20791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * Since this is dummy we don't have an actual link so 20801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * there is nothing to do for the SET_LINK_STATE cmd 20811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 20821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_U1_TIMEOUT: 20841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_U2_TIMEOUT: 20851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* TODO: add suspend/resume support! */ 20861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 20871cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20881cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_U1/2_TIMEOUT req not " 20891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 20901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 20911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 20921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 20931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_SUSPEND: 20941cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Applicable only for USB2.0 hub */ 20951cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 20961cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 20971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_SUSPEND req not " 20981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 3.0 roothub\n"); 20991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 21001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 2101cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->active) { 2102cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_SUSPEND; 2103f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern 2104f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* HNP would happen here; for now we 2105f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern * assume b_bus_req is always true. 2106f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern */ 2107cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 2108f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern if (((1 << USB_DEVICE_B_HNP_ENABLE) 2109cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman & dum_hcd->dum->devstatus) != 0) 2110cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 21115742b0c95026c817d9c266174ca39a909e8d38caAlan Stern "no HNP yet!\n"); 21121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2114f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern case USB_PORT_FEAT_POWER: 21151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) 21161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= USB_SS_PORT_STAT_POWER; 21171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman else 21181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= USB_PORT_STAT_POWER; 2119cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 2120f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern break; 21211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_PORT_FEAT_BH_PORT_RESET: 21221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* Applicable only for USB3.0 hub */ 21231cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 21241cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 21251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB_PORT_FEAT_BH_PORT_RESET req not " 21261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 21271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 21281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 21291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* FALLS THROUGH */ 21301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case USB_PORT_FEAT_RESET: 2131f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* if it's already enabled, disable */ 21321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 21331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 0; 21341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status = 21351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (USB_SS_PORT_STAT_POWER | 21361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_CONNECTION | 21371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_RESET); 21381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else 21391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status &= ~(USB_PORT_STAT_ENABLE 2140f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_LOW_SPEED 2141f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern | USB_PORT_STAT_HIGH_SPEED); 2142cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman /* 2143cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * We want to reset device status. All but the 2144cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman * Self powered feature 2145cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman */ 2146cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->dum->devstatus &= 2147cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman (1 << USB_DEVICE_SELF_POWERED); 21481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 21491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * FIXME USB3.0: what is the correct reset signaling 21501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * interval? Is it still 50msec as for HS? 21511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 2152cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->re_timeout = jiffies + msecs_to_jiffies(50); 2153f1c39fad7d1bbea31744138cd3a532ff346cd4abAlan Stern /* FALLS THROUGH */ 21541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 21551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed == HCD_USB3) { 21561cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & 21571cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_SS_PORT_STAT_POWER) != 0) { 21581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= (1 << wValue); 21591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman set_link_state(dum_hcd); 21601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 21611cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else 21621cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if ((dum_hcd->port_status & 21631cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman USB_PORT_STAT_POWER) != 0) { 21641cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->port_status |= (1 << wValue); 21651cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman set_link_state(dum_hcd); 21661cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 21671cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 21681cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 21691cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case GetPortErrorCount: 21701cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 21711cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 21721cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "GetPortErrorCount req not " 21731cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "supported for USB 2.0 roothub\n"); 21741cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 21751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 21761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* We'll always return 0 since this is a dummy hub */ 21771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman *(__le32 *) buf = cpu_to_le32(0); 21781cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 21791cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case SetHubDepth: 21801cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (hcd->speed != HCD_USB3) { 21811cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 21821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "SetHubDepth req not supported for " 21831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman "USB 2.0 roothub\n"); 21841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto error; 21851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 21861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 21871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 2188cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_dbg(dummy_dev(dum_hcd), 21891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "hub control req%04x v%04x i%04x l%d\n", 21901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds typeReq, wValue, wIndex, wLength); 21911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanerror: 21921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* "protocol stall" on error */ 21931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = -EPIPE; 21941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2195cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 2196685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern 2197cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if ((dum_hcd->port_status & PORT_C_MASK) != 0) 2198685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern usb_hcd_poll_rh_status (hcd); 21991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 22001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22020c0382e32d46f606951010b202382be14d180a17Alan Sternstatic int dummy_bus_suspend (struct usb_hcd *hcd) 2203391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2204cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 2205391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2206441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); 22073cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern 2208cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irq(&dum_hcd->dum->lock); 2209cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state = DUMMY_RH_SUSPENDED; 2210cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 22113cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd->state = HC_STATE_SUSPENDED; 2212cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irq(&dum_hcd->dum->lock); 2213391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 2214391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 2215391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 22160c0382e32d46f606951010b202382be14d180a17Alan Sternstatic int dummy_bus_resume (struct usb_hcd *hcd) 2217391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2218cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 22193cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern int rc = 0; 22203cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern 2221441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&hcd->self.root_hub->dev, "%s\n", __func__); 2222391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2223cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irq(&dum_hcd->dum->lock); 2224541c7d432f76771079e7c295d596ea47cc6a3030Alan Stern if (!HCD_HW_ACCESSIBLE(hcd)) { 2225cfa59dab27d1b282886e7772a8f9548236883892Alan Stern rc = -ESHUTDOWN; 22263cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern } else { 2227cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state = DUMMY_RH_RUNNING; 2228cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman set_link_state(dum_hcd); 2229cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!list_empty(&dum_hcd->urbp_list)) 2230cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman mod_timer(&dum_hcd->timer, jiffies); 22313cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd->state = HC_STATE_RUNNING; 22323cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern } 2233cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irq(&dum_hcd->dum->lock); 22343cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern return rc; 2235391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 22361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 22381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline ssize_t 22401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsshow_urb (char *buf, size_t size, struct urb *urb) 22411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ep = usb_pipeendpoint (urb->pipe); 22431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return snprintf (buf, size, 22451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "urb/%p %s ep%d%s%s len %d/%d\n", 22461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb, 22471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; 22481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (urb->dev->speed) { 22497c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_SPEED_LOW: 22507c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "ls"; 22517c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 22527c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_SPEED_FULL: 22537c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "fs"; 22547c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 22557c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case USB_SPEED_HIGH: 22567c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "hs"; 22577c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 22581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman case USB_SPEED_SUPER: 22591cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman s = "ss"; 22601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman break; 22617c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman default: 22627c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "?"; 22637c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; 22641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s; }), 22651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ep, ep ? (usb_pipein (urb->pipe) ? "in" : "out") : "", 22661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ({ char *s; \ 22671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (usb_pipetype (urb->pipe)) { \ 22687c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case PIPE_CONTROL: \ 22697c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = ""; \ 22707c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 22717c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case PIPE_BULK: \ 22727c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "-bulk"; \ 22737c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 22747c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman case PIPE_INTERRUPT: \ 22757c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "-int"; \ 22767c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 22777c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman default: \ 22787c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman s = "-iso"; \ 22797c884fe4d74d17efc83b19f3dc898a75f03859e9Tatyana Brokhman break; \ 22801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds }; s;}), 22811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->actual_length, urb->transfer_buffer_length); 22821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 22831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 228510523b3b82456e416cbaffcc24ea2246980aa746Yani Ioannoushow_urbs (struct device *dev, struct device_attribute *attr, char *buf) 22861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 22871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_hcd *hcd = dev_get_drvdata (dev); 2288cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 22891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct urbp *urbp; 22901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t size = 0; 22911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 22921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2293cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_irqsave(&dum_hcd->dum->lock, flags); 2294cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman list_for_each_entry(urbp, &dum_hcd->urbp_list, urbp_list) { 22951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t temp; 22961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 22971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp = show_urb (buf, PAGE_SIZE - size, urbp->urb); 22981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf += temp; 22991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size += temp; 23001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2301cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 23021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return size; 23041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic DEVICE_ATTR (urbs, S_IRUGO, show_urbs, NULL); 23061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23071cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic int dummy_start_ss(struct dummy_hcd *dum_hcd) 23081cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 23091cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman init_timer(&dum_hcd->timer); 23101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->timer.function = dummy_timer; 23111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->timer.data = (unsigned long)dum_hcd; 23121cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dum_hcd->rh_state = DUMMY_RH_RUNNING; 2313a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior dum_hcd->stream_en_ep = 0; 23141cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman INIT_LIST_HEAD(&dum_hcd->urbp_list); 23151cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET; 23161cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING; 23171cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1; 23181cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman#ifdef CONFIG_USB_OTG 23191cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd_to_hcd(dum_hcd)->self.otg_port = 1; 23201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman#endif 23211cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 23221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 23231cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ 23241cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); 23251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 23261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2327cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int dummy_start(struct usb_hcd *hcd) 23281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2329cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 23301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 23321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MASTER side init ... we emulate a root hub that'll only ever 23331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * talk to one device (the slave side). Also appears in sysfs, 23341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * just like more familiar pci-based HCDs. 23351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 23361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!usb_hcd_is_primary_hcd(hcd)) 23371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return dummy_start_ss(dum_hcd); 23381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2339cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman spin_lock_init(&dum_hcd->dum->lock); 2340cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman init_timer(&dum_hcd->timer); 2341cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->timer.function = dummy_timer; 2342cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->timer.data = (unsigned long)dum_hcd; 2343cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd->rh_state = DUMMY_RH_RUNNING; 23441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2345cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman INIT_LIST_HEAD(&dum_hcd->urbp_list); 23461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2347caf29f62655e7aa57996821535d11fa3b0537b6bAlan Stern hcd->power_budget = POWER_BUDGET; 23481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hcd->state = HC_STATE_RUNNING; 2349685eb93f086eb15d9fb1e82c7400fd750f564640Alan Stern hcd->uses_new_polling = 1; 23501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23515742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#ifdef CONFIG_USB_OTG 23525742b0c95026c817d9c266174ca39a909e8d38caAlan Stern hcd->self.otg_port = 1; 23535742b0c95026c817d9c266174ca39a909e8d38caAlan Stern#endif 23545742b0c95026c817d9c266174ca39a909e8d38caAlan Stern 23551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME 'urbs' should be a per-device thing, maybe in usbcore */ 2356cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return device_create_file(dummy_dev(dum_hcd), &dev_attr_urbs); 23571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void dummy_stop (struct usb_hcd *hcd) 23601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 23611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct dummy *dum; 23621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2363cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum = (hcd_to_dummy_hcd(hcd))->dum; 2364cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); 2365cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_gadget_unregister_driver(dum->driver); 2366cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); 23671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*-------------------------------------------------------------------------*/ 23701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int dummy_h_get_frame (struct usb_hcd *hcd) 23721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 23731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return dummy_g_get_frame (NULL); 23741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 23751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2376cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int dummy_setup(struct usb_hcd *hcd) 2377cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman{ 237814fce33a960afbcf91ef97135903092c33f6d076Sebastian Andrzej Siewior hcd->self.sg_tablesize = ~0; 2379cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (usb_hcd_is_primary_hcd(hcd)) { 2380cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman the_controller.hs_hcd = hcd_to_dummy_hcd(hcd); 2381cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman the_controller.hs_hcd->dum = &the_controller; 23821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman /* 23831cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * Mark the first roothub as being USB 2.0. 23841cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * The USB 3.0 roothub will be registered later by 23851cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman * dummy_hcd_probe() 23861cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman */ 2387cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hcd->speed = HCD_USB2; 2388cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hcd->self.root_hub->speed = USB_SPEED_HIGH; 23891cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } else { 23901cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.ss_hcd = hcd_to_dummy_hcd(hcd); 23911cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.ss_hcd->dum = &the_controller; 23921cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman hcd->speed = HCD_USB3; 23931cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman hcd->self.root_hub->speed = USB_SPEED_SUPER; 2394cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman } 2395cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman return 0; 2396cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman} 2397cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 23981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman/* Change a group of bulk endpoints to support multiple stream IDs */ 2399d81f3e4f5792acab5929ef99aad6ca5e21a31a0eSebastian Andrzej Siewiorstatic int dummy_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, 24001cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct usb_host_endpoint **eps, unsigned int num_eps, 24011cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman unsigned int num_streams, gfp_t mem_flags) 24021cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 2403a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 2404a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned long flags; 2405a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior int max_stream; 2406a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior int ret_streams = num_streams; 2407a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned int index; 2408a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned int i; 2409a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 2410a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (!num_eps) 2411a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return -EINVAL; 2412a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 2413a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior spin_lock_irqsave(&dum_hcd->dum->lock, flags); 2414a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior for (i = 0; i < num_eps; i++) { 2415a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior index = dummy_get_ep_idx(&eps[i]->desc); 2416a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if ((1 << index) & dum_hcd->stream_en_ep) { 2417a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior ret_streams = -EINVAL; 2418a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior goto out; 2419a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 2420a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_stream = usb_ss_max_streams(&eps[i]->ss_ep_comp); 2421a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (!max_stream) { 2422a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior ret_streams = -EINVAL; 2423a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior goto out; 2424a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 2425a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (max_stream < ret_streams) { 2426a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior dev_dbg(dummy_dev(dum_hcd), "Ep 0x%x only supports %u " 2427a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior "stream IDs.\n", 2428a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior eps[i]->desc.bEndpointAddress, 2429a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior max_stream); 2430a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior ret_streams = max_stream; 2431a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 2432a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 2433a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 2434a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior for (i = 0; i < num_eps; i++) { 2435a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior index = dummy_get_ep_idx(&eps[i]->desc); 2436a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior dum_hcd->stream_en_ep |= 1 << index; 2437a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior set_max_streams_for_pipe(dum_hcd, 2438a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior usb_endpoint_num(&eps[i]->desc), ret_streams); 2439a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 2440a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewiorout: 2441a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 2442a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return ret_streams; 24431cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 24441cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 24451cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman/* Reverts a group of bulk endpoints back to not using stream IDs. */ 2446d81f3e4f5792acab5929ef99aad6ca5e21a31a0eSebastian Andrzej Siewiorstatic int dummy_free_streams(struct usb_hcd *hcd, struct usb_device *udev, 24471cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct usb_host_endpoint **eps, unsigned int num_eps, 24481cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman gfp_t mem_flags) 24491cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman{ 2450a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); 2451a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned long flags; 2452a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior int ret; 2453a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned int index; 2454a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior unsigned int i; 2455a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 2456a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior spin_lock_irqsave(&dum_hcd->dum->lock, flags); 2457a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior for (i = 0; i < num_eps; i++) { 2458a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior index = dummy_get_ep_idx(&eps[i]->desc); 2459a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior if (!((1 << index) & dum_hcd->stream_en_ep)) { 2460a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior ret = -EINVAL; 2461a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior goto out; 2462a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 2463a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 2464a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior 2465a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior for (i = 0; i < num_eps; i++) { 2466a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior index = dummy_get_ep_idx(&eps[i]->desc); 2467a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior dum_hcd->stream_en_ep &= ~(1 << index); 2468a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior set_max_streams_for_pipe(dum_hcd, 2469a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior usb_endpoint_num(&eps[i]->desc), 0); 2470a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior } 2471a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior ret = 0; 2472a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewiorout: 2473a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); 2474a54c979fed31b4230b2e63132f7167206e4e5d69Sebastian Andrzej Siewior return ret; 24751cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman} 24761cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 24771cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanstatic struct hc_driver dummy_hcd = { 24781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .description = (char *) driver_name, 24791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .product_desc = "Dummy host controller", 2480cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman .hcd_priv_size = sizeof(struct dummy_hcd), 24811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24821cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman .flags = HCD_USB3 | HCD_SHARED, 24831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2484cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman .reset = dummy_setup, 24851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .start = dummy_start, 24861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .stop = dummy_stop, 24871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_enqueue = dummy_urb_enqueue, 24891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .urb_dequeue = dummy_urb_dequeue, 24901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .get_frame_number = dummy_h_get_frame, 24921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_status_data = dummy_hub_status, 24941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .hub_control = dummy_hub_control, 24950c0382e32d46f606951010b202382be14d180a17Alan Stern .bus_suspend = dummy_bus_suspend, 24960c0382e32d46f606951010b202382be14d180a17Alan Stern .bus_resume = dummy_bus_resume, 24971cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 24981cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman .alloc_streams = dummy_alloc_streams, 24991cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman .free_streams = dummy_free_streams, 25001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 25011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25028364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_hcd_probe(struct platform_device *pdev) 25031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2504cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct usb_hcd *hs_hcd; 25051cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman struct usb_hcd *ss_hcd; 25061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 25071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25088364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Stern dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); 25091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25101cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!mod_data.is_super_speed) 25111cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dummy_hcd.flags = HCD_USB2; 2512cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hs_hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev)); 2513cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (!hs_hcd) 25141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 2515cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman hs_hcd->has_tt = 1; 25161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2517cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman retval = usb_add_hcd(hs_hcd, 0, 0); 25181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval != 0) { 2519cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_put_hcd(hs_hcd); 25201cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return retval; 25211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 25221cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 25231cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (mod_data.is_super_speed) { 25241cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev, 25251cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman dev_name(&pdev->dev), hs_hcd); 25261cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!ss_hcd) { 25271cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman retval = -ENOMEM; 25281cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto dealloc_usb2_hcd; 25291cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 25301cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 25311cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman retval = usb_add_hcd(ss_hcd, 0, 0); 25321cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (retval) 25331cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman goto put_usb3_hcd; 25341cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 25351cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman return 0; 25361cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 25371cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmanput_usb3_hcd: 25381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_put_hcd(ss_hcd); 25391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhmandealloc_usb2_hcd: 25401cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_put_hcd(hs_hcd); 25411cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.hs_hcd = the_controller.ss_hcd = NULL; 25421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 25431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2545cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhmanstatic int dummy_hcd_remove(struct platform_device *pdev) 25461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2547cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy *dum; 2548cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman 2549cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum = (hcd_to_dummy_hcd(platform_get_drvdata(pdev)))->dum; 25501cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 25511cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (dum->ss_hcd) { 25521cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_remove_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); 25531cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman usb_put_hcd(dummy_hcd_to_hcd(dum->ss_hcd)); 25541cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman } 25551cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2556cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_remove_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); 2557cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman usb_put_hcd(dummy_hcd_to_hcd(dum->hs_hcd)); 25581cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman 2559cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman the_controller.hs_hcd = NULL; 25601cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman the_controller.ss_hcd = NULL; 25611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2562d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return 0; 25631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 25641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 25658364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_hcd_suspend (struct platform_device *pdev, pm_message_t state) 2566391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2567391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 2568cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman struct dummy_hcd *dum_hcd; 25693cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern int rc = 0; 2570391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2571441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&pdev->dev, "%s\n", __func__); 2572391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 25733cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd = platform_get_drvdata (pdev); 2574cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman dum_hcd = hcd_to_dummy_hcd(hcd); 2575cdfcbd2c4a9e866c19bf8fe2b4e011a12441c32aTatyana Brokhman if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { 25763cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern dev_warn(&pdev->dev, "Root hub isn't suspended!\n"); 25773cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern rc = -EBUSY; 25783cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern } else 25793cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 25803cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern return rc; 2581391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 2582391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 25838364d6b0be2dbbf162c6aea79615b5025a0d67c2Alan Sternstatic int dummy_hcd_resume (struct platform_device *pdev) 2584391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern{ 2585391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern struct usb_hcd *hcd; 2586391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 2587441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dev_dbg (&pdev->dev, "%s\n", __func__); 2588391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 25893cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern hcd = platform_get_drvdata (pdev); 25903cf0a22e8b1b3f44288db773d315e72e89d51c4cAlan Stern set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); 2591391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern usb_hcd_poll_rh_status (hcd); 2592391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern return 0; 2593391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern} 2594391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern 25953ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell Kingstatic struct platform_driver dummy_hcd_driver = { 2596d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .probe = dummy_hcd_probe, 2597d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern .remove = dummy_hcd_remove, 2598391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .suspend = dummy_hcd_suspend, 2599391eca9d8892a940ff8dbfee2ca78942e05c2d37Alan Stern .resume = dummy_hcd_resume, 26003ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .driver = { 26013ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .name = (char *) driver_name, 26023ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King .owner = THIS_MODULE, 26033ae5eaec1d2d9c0cf53745352e7d4b152810ba24Russell King }, 2604d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern}; 26051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2606d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern/*-------------------------------------------------------------------------*/ 26071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2608a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternstatic struct platform_device *the_udc_pdev; 2609a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternstatic struct platform_device *the_hcd_pdev; 26101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init (void) 26121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2613a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern int retval = -ENOMEM; 26141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (usb_disabled ()) 26161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 2617d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 26187eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman if (!mod_data.is_high_speed && mod_data.is_super_speed) 26197eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman return -EINVAL; 26207eca4c5a8b73f22ad16ad6e76b901351732355daTatyana Brokhman 2621a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern the_hcd_pdev = platform_device_alloc(driver_name, -1); 2622a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern if (!the_hcd_pdev) 26231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 2624a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern the_udc_pdev = platform_device_alloc(gadget_name, -1); 2625a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern if (!the_udc_pdev) 2626a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_alloc_udc; 2627d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2628a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_driver_register(&dummy_hcd_driver); 2629a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern if (retval < 0) 2630a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_register_hcd_driver; 2631a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_driver_register(&dummy_udc_driver); 2632d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2633d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern goto err_register_udc_driver; 2634d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2635a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_device_add(the_hcd_pdev); 2636d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2637a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_add_hcd; 26381cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman if (!the_controller.hs_hcd || 26391cd8fd2887e162ad3d067150962cc3d32dcf3150Tatyana Brokhman (!the_controller.ss_hcd && mod_data.is_super_speed)) { 2640865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior /* 2641865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * The hcd was added successfully but its probe function failed 2642865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * for some reason. 2643865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior */ 2644865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior retval = -EINVAL; 2645865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior goto err_add_udc; 2646865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior } 2647a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern retval = platform_device_add(the_udc_pdev); 2648d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern if (retval < 0) 2649a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern goto err_add_udc; 2650865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior if (!platform_get_drvdata(the_udc_pdev)) { 2651865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior /* 2652865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * The udc was added successfully but its probe function failed 2653865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior * for some reason. 2654865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior */ 2655865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior retval = -EINVAL; 2656865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior goto err_probe_udc; 2657865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior } 2658d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern return retval; 2659d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Stern 2660865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewiorerr_probe_udc: 2661865835fa441fcabc65251f14280df3055fe82d0fSebastian Andrzej Siewior platform_device_del(the_udc_pdev); 2662a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_add_udc: 2663a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_del(the_hcd_pdev); 2664a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_add_hcd: 2665a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_udc_driver); 2666d9b762510c186584a6be0d3ece03e8a4b2ac13a8Alan Sternerr_register_udc_driver: 2667a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_hcd_driver); 2668a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_register_hcd_driver: 2669a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_put(the_udc_pdev); 2670a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Sternerr_alloc_udc: 2671a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_put(the_hcd_pdev); 26721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 26731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init (init); 26751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit cleanup (void) 26771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2678a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_unregister(the_udc_pdev); 2679a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_device_unregister(the_hcd_pdev); 2680a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_udc_driver); 2681a89a2cd396b20c46a37fa8db4b652fb00f29d0a4Alan Stern platform_driver_unregister(&dummy_hcd_driver); 26821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 26831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit (cleanup); 2684