u_fs.h revision 6d5c1c77bbf98b2cc5373af02bb7b3b27584ee4a
1e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz/* 2e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * u_fs.h 3e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * 4e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * Utility definitions for the FunctionFS 5e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * 6e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * Copyright (c) 2013 Samsung Electronics Co., Ltd. 7e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * http://www.samsung.com 8e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * 9e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> 10e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * 11e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * This program is free software; you can redistribute it and/or modify 12e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * it under the terms of the GNU General Public License version 2 as 13e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz * published by the Free Software Foundation. 14e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz */ 15e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz 16e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz#ifndef U_FFS_H 17e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz#define U_FFS_H 18e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz 19e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz#include <linux/usb/composite.h> 204b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz#include <linux/list.h> 214b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz#include <linux/mutex.h> 22e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz 235920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#ifdef VERBOSE_DEBUG 245920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#ifndef pr_vdebug 255920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz# define pr_vdebug pr_debug 265920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#endif /* pr_vdebug */ 275920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz# define ffs_dump_mem(prefix, ptr, len) \ 285920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz print_hex_dump_bytes(pr_fmt(prefix ": "), DUMP_PREFIX_NONE, ptr, len) 295920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#else 305920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#ifndef pr_vdebug 315920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz# define pr_vdebug(...) do { } while (0) 325920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#endif /* pr_vdebug */ 335920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz# define ffs_dump_mem(prefix, ptr, len) do { } while (0) 345920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#endif /* VERBOSE_DEBUG */ 355920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 365920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#define ENTER() pr_vdebug("%s()\n", __func__) 375920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 38b658499f0f0f4ebf21d09c7da62a46f66ffa67cbAndrzej Pietrasiewiczstruct f_fs_opts; 395920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 40e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewiczstruct ffs_dev { 41e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz const char *name; 42b658499f0f0f4ebf21d09c7da62a46f66ffa67cbAndrzej Pietrasiewicz bool name_allocated; 43e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz bool mounted; 44e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz bool desc_ready; 454b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz bool single; 46e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz struct ffs_data *ffs_data; 47b658499f0f0f4ebf21d09c7da62a46f66ffa67cbAndrzej Pietrasiewicz struct f_fs_opts *opts; 484b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz struct list_head entry; 494b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz 504b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz int (*ffs_ready_callback)(struct ffs_data *ffs); 514b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz void (*ffs_closed_callback)(struct ffs_data *ffs); 525920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz void *(*ffs_acquire_dev_callback)(struct ffs_dev *dev); 535920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz void (*ffs_release_dev_callback)(struct ffs_dev *dev); 54e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz}; 55e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz 564b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewiczextern struct mutex ffs_lock; 574b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz 584b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewiczstatic inline void ffs_dev_lock(void) 594b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz{ 604b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz mutex_lock(&ffs_lock); 614b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz} 624b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz 634b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewiczstatic inline void ffs_dev_unlock(void) 644b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz{ 654b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz mutex_unlock(&ffs_lock); 664b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz} 674b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz 684b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewiczint ffs_name_dev(struct ffs_dev *dev, const char *name); 694b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewiczint ffs_single_dev(struct ffs_dev *dev); 704b187fceec3c731815ff8e6a7317fd5ba50d1d5dAndrzej Pietrasiewicz 715920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewiczstruct ffs_epfile; 725920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewiczstruct ffs_function; 735920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 745920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewiczenum ffs_state { 755920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 765920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * Waiting for descriptors and strings. 775920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * 785920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * In this state no open(2), read(2) or write(2) on epfiles 795920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * may succeed (which should not be the problem as there 805920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * should be no such files opened in the first place). 815920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 825920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz FFS_READ_DESCRIPTORS, 835920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz FFS_READ_STRINGS, 845920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 855920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 865920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * We've got descriptors and strings. We are or have called 875920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * functionfs_ready_callback(). functionfs_bind() may have 885920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * been called but we don't know. 895920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * 905920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * This is the only state in which operations on epfiles may 915920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * succeed. 925920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 935920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz FFS_ACTIVE, 945920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 955920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 965920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * All endpoints have been closed. This state is also set if 975920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * we encounter an unrecoverable error. The only 985920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * unrecoverable error is situation when after reading strings 995920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * from user space we fail to initialise epfiles or 1005920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * functionfs_ready_callback() returns with error (<0). 1015920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * 1025920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * In this state no open(2), read(2) or write(2) (both on ep0 1035920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * as well as epfile) may succeed (at this point epfiles are 1045920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * unlinked and all closed so this is not a problem; ep0 is 1055920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * also closed but ep0 file exists and so open(2) on ep0 must 1065920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * fail). 1075920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 1085920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz FFS_CLOSING 1095920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz}; 1105920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1115920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewiczenum ffs_setup_state { 1125920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* There is no setup request pending. */ 1135920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz FFS_NO_SETUP, 1145920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 1155920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * User has read events and there was a setup request event 1165920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * there. The next read/write on ep0 will handle the 1175920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * request. 1185920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 1195920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz FFS_SETUP_PENDING, 1205920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 1215920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * There was event pending but before user space handled it 1225920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * some other event was introduced which canceled existing 1235920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * setup. If this state is set read/write on ep0 return 1245920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * -EIDRM. This state is only set when adding event. 1255920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 126e46318a00091e3e009363a516acc44a4a80e2ebbMichal Nazarewicz FFS_SETUP_CANCELLED 1275920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz}; 1285920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1295920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewiczstruct ffs_data { 1305920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct usb_gadget *gadget; 1315920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1325920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 1335920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * Protect access read/write operations, only one read/write 1345920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * at a time. As a consequence protects ep0req and company. 1355920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * While setup request is being processed (queued) this is 1365920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * held. 1375920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 1385920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct mutex mutex; 1395920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1405920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 1415920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * Protect access to endpoint related structures (basically 1425920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * usb_ep_queue(), usb_ep_dequeue(), etc. calls) except for 1435920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * endpoint zero. 1445920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 1455920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz spinlock_t eps_lock; 1465920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1475920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 1485920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * XXX REVISIT do we need our own request? Since we are not 1495920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * handling setup requests immediately user space may be so 1505920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * slow that another setup will be sent to the gadget but this 1515920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * time not to us but another function and then there could be 1525920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * a race. Is that the case? Or maybe we can use cdev->req 1535920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * after all, maybe we just need some spinlock for that? 1545920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 1555920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct usb_request *ep0req; /* P: mutex */ 1565920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct completion ep0req_completion; /* P: mutex */ 1575920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1585920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* reference counter */ 1595920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz atomic_t ref; 1605920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* how many files are opened (EP0 and others) */ 1615920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz atomic_t opened; 1625920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1635920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* EP0 state */ 1645920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz enum ffs_state state; 1655920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1665920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 1675920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * Possible transitions: 168e46318a00091e3e009363a516acc44a4a80e2ebbMichal Nazarewicz * + FFS_NO_SETUP -> FFS_SETUP_PENDING -- P: ev.waitq.lock 1695920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * happens only in ep0 read which is P: mutex 170e46318a00091e3e009363a516acc44a4a80e2ebbMichal Nazarewicz * + FFS_SETUP_PENDING -> FFS_NO_SETUP -- P: ev.waitq.lock 1715920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * happens only in ep0 i/o which is P: mutex 172e46318a00091e3e009363a516acc44a4a80e2ebbMichal Nazarewicz * + FFS_SETUP_PENDING -> FFS_SETUP_CANCELLED -- P: ev.waitq.lock 173e46318a00091e3e009363a516acc44a4a80e2ebbMichal Nazarewicz * + FFS_SETUP_CANCELLED -> FFS_NO_SETUP -- cmpxchg 174a7ecf0544f0fc710ba6e2ff751d328a4190c4a1fMichal Nazarewicz * 175a7ecf0544f0fc710ba6e2ff751d328a4190c4a1fMichal Nazarewicz * This field should never be accessed directly and instead 176a7ecf0544f0fc710ba6e2ff751d328a4190c4a1fMichal Nazarewicz * ffs_setup_state_clear_cancelled function should be used. 1775920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 1785920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz enum ffs_setup_state setup_state; 1795920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1805920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* Events & such. */ 1815920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct { 1825920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz u8 types[4]; 1835920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned short count; 1845920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* XXX REVISIT need to update it in some places, or do we? */ 1855920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned short can_stall; 1865920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct usb_ctrlrequest setup; 1875920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1885920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz wait_queue_head_t waitq; 1895920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz } ev; /* the whole structure, P: ev.waitq.lock */ 1905920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1915920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* Flags */ 1925920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned long flags; 1935920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#define FFS_FL_CALL_CLOSED_CALLBACK 0 1945920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz#define FFS_FL_BOUND 1 1955920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1965920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* Active function */ 1975920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct ffs_function *func; 1985920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 1995920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 2005920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * Device name, write once when file system is mounted. 2015920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * Intended for user to read if she wants. 2025920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 2035920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz const char *dev_name; 2045920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* Private data for our user (ie. gadget). Managed by user. */ 2055920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz void *private_data; 2065920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 2075920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* filled by __ffs_data_got_descs() */ 2085920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 209ac8dde11f2b397fe2282f585d5eb427a13675ea2Michal Nazarewicz * raw_descs is what you kfree, real_descs points inside of raw_descs, 210ac8dde11f2b397fe2282f585d5eb427a13675ea2Michal Nazarewicz * where full speed, high speed and super speed descriptors start. 211ac8dde11f2b397fe2282f585d5eb427a13675ea2Michal Nazarewicz * real_descs_length is the length of all those descriptors. 2125920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 213ac8dde11f2b397fe2282f585d5eb427a13675ea2Michal Nazarewicz const void *raw_descs_data; 2145920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz const void *raw_descs; 215ac8dde11f2b397fe2282f585d5eb427a13675ea2Michal Nazarewicz unsigned raw_descs_length; 2165920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned fs_descs_count; 2175920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned hs_descs_count; 2188d4e897bd0150fab594a871484e554472ee01452Manu Gautam unsigned ss_descs_count; 219f0175ab51993d2dc2728e7b22a16ffb0c8f4cfa0Andrzej Pietrasiewicz unsigned ms_os_descs_count; 220f0175ab51993d2dc2728e7b22a16ffb0c8f4cfa0Andrzej Pietrasiewicz unsigned ms_os_descs_ext_prop_count; 221f0175ab51993d2dc2728e7b22a16ffb0c8f4cfa0Andrzej Pietrasiewicz unsigned ms_os_descs_ext_prop_name_len; 222f0175ab51993d2dc2728e7b22a16ffb0c8f4cfa0Andrzej Pietrasiewicz unsigned ms_os_descs_ext_prop_data_len; 223f0175ab51993d2dc2728e7b22a16ffb0c8f4cfa0Andrzej Pietrasiewicz void *ms_os_descs_ext_prop_avail; 224f0175ab51993d2dc2728e7b22a16ffb0c8f4cfa0Andrzej Pietrasiewicz void *ms_os_descs_ext_prop_name_avail; 225f0175ab51993d2dc2728e7b22a16ffb0c8f4cfa0Andrzej Pietrasiewicz void *ms_os_descs_ext_prop_data_avail; 2265920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 2276d5c1c77bbf98b2cc5373af02bb7b3b27584ee4aRobert Baldyga u8 eps_addrmap[15]; 2286d5c1c77bbf98b2cc5373af02bb7b3b27584ee4aRobert Baldyga 2295920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned short strings_count; 2305920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned short interfaces_count; 2315920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned short eps_count; 2325920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned short _pad1; 2335920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 2345920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* filled by __ffs_data_got_strings() */ 2355920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* ids in stringtabs are set in functionfs_bind() */ 2365920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz const void *raw_strings; 2375920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct usb_gadget_strings **stringtabs; 2385920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 2395920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 2405920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * File system's super block, write once when file system is 2415920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * mounted. 2425920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 2435920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct super_block *sb; 2445920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 2455920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* File permissions, written once when fs is mounted */ 2465920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct ffs_file_perms { 2475920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz umode_t mode; 2485920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz kuid_t uid; 2495920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz kgid_t gid; 2505920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz } file_perms; 2515920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 2525920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz /* 2535920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * The endpoint files, filled by ffs_epfiles_create(), 2545920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz * destroyed by ffs_epfiles_destroy(). 2555920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz */ 2565920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct ffs_epfile *epfiles; 2575920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz}; 2585920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 2595920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 2605920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewiczstruct f_fs_opts { 2615920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct usb_function_instance func_inst; 2625920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz struct ffs_dev *dev; 2635920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz unsigned refcnt; 2645920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz bool no_configfs; 2655920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz}; 2665920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 2675920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewiczstatic inline struct f_fs_opts *to_f_fs_opts(struct usb_function_instance *fi) 2685920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz{ 2695920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz return container_of(fi, struct f_fs_opts, func_inst); 2705920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz} 2715920cda627688c3229fd63157ff031f3f174175eAndrzej Pietrasiewicz 272e72c39c0692d17da4c7f08e20d6c57f7409415f7Andrzej Pietrasiewicz#endif /* U_FFS_H */ 273