Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: capi.c,v 1.1.2.7 2004/04/28 09:48:59 armin Exp $ |
| 2 | * |
| 3 | * CAPI 2.0 Interface for Linux |
| 4 | * |
| 5 | * Copyright 1996 by Carsten Paeth <calle@calle.de> |
| 6 | * |
| 7 | * This software may be used and distributed according to the terms |
| 8 | * of the GNU General Public License, incorporated herein by reference. |
| 9 | * |
| 10 | */ |
| 11 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/module.h> |
| 13 | #include <linux/errno.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/major.h> |
| 16 | #include <linux/sched.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/fcntl.h> |
| 19 | #include <linux/fs.h> |
| 20 | #include <linux/signal.h> |
Matthias Kaehlcke | 9ea6e5d | 2007-05-08 00:32:43 -0700 | [diff] [blame] | 21 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/timer.h> |
| 24 | #include <linux/wait.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/tty.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/netdevice.h> |
| 27 | #include <linux/ppp_defs.h> |
Paul Mackerras | 4b32da2b | 2012-03-04 12:56:55 +0000 | [diff] [blame] | 28 | #include <linux/ppp-ioctl.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/skbuff.h> |
| 30 | #include <linux/proc_fs.h> |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 31 | #include <linux/seq_file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/poll.h> |
| 33 | #include <linux/capi.h> |
| 34 | #include <linux/kernelcapi.h> |
| 35 | #include <linux/init.h> |
| 36 | #include <linux/device.h> |
| 37 | #include <linux/moduleparam.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <linux/isdn/capiutil.h> |
| 39 | #include <linux/isdn/capicmd.h> |
Jan Kiszka | 90926f0 | 2010-02-08 10:12:06 +0000 | [diff] [blame] | 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface"); |
| 42 | MODULE_AUTHOR("Carsten Paeth"); |
| 43 | MODULE_LICENSE("GPL"); |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | /* -------- driver information -------------------------------------- */ |
| 46 | |
Arnd Bergmann | 76a6492 | 2010-07-11 11:18:53 +0000 | [diff] [blame] | 47 | static DEFINE_MUTEX(capi_mutex); |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 48 | static struct class *capi_class; |
Adrian Bunk | 408b664 | 2005-05-01 08:59:29 -0700 | [diff] [blame] | 49 | static int capi_major = 68; /* allocated */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | module_param_named(major, capi_major, uint, 0); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 54 | #define CAPINC_NR_PORTS 32 |
| 55 | #define CAPINC_MAX_PORTS 256 |
| 56 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 57 | static int capi_ttyminors = CAPINC_NR_PORTS; |
| 58 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | module_param_named(ttyminors, capi_ttyminors, uint, 0); |
| 60 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 61 | |
| 62 | /* -------- defines ------------------------------------------------- */ |
| 63 | |
| 64 | #define CAPINC_MAX_RECVQUEUE 10 |
| 65 | #define CAPINC_MAX_SENDQUEUE 10 |
| 66 | #define CAPI_MAX_BLKSIZE 2048 |
| 67 | |
| 68 | /* -------- data structures ----------------------------------------- */ |
| 69 | |
| 70 | struct capidev; |
| 71 | struct capincci; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | struct capiminor; |
| 73 | |
Jan Kiszka | 42651b5 | 2010-02-08 10:12:37 +0000 | [diff] [blame] | 74 | struct ackqueue_entry { |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 75 | struct list_head list; |
| 76 | u16 datahandle; |
| 77 | }; |
| 78 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | struct capiminor { |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 80 | struct kref kref; |
| 81 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | unsigned int minor; |
| 83 | |
Jan Kiszka | 4279271 | 2010-02-08 10:12:38 +0000 | [diff] [blame] | 84 | struct capi20_appl *ap; |
| 85 | u32 ncci; |
| 86 | atomic_t datahandle; |
| 87 | atomic_t msgid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 89 | struct tty_port port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | int ttyinstop; |
| 91 | int ttyoutstop; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 93 | struct sk_buff_head inqueue; |
| 94 | |
| 95 | struct sk_buff_head outqueue; |
| 96 | int outbytes; |
| 97 | struct sk_buff *outskb; |
| 98 | spinlock_t outlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
| 100 | /* transmit path */ |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 101 | struct list_head ackqueue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | int nack; |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 103 | spinlock_t ackqlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
| 106 | struct capincci { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 107 | struct list_head list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | u32 ncci; |
| 109 | struct capidev *cdev; |
| 110 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
| 111 | struct capiminor *minorp; |
| 112 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 113 | }; |
| 114 | |
| 115 | struct capidev { |
| 116 | struct list_head list; |
| 117 | struct capi20_appl ap; |
| 118 | u16 errcode; |
| 119 | unsigned userflags; |
| 120 | |
| 121 | struct sk_buff_head recvqueue; |
| 122 | wait_queue_head_t recvwait; |
| 123 | |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 124 | struct list_head nccis; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 126 | struct mutex lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | }; |
| 128 | |
| 129 | /* -------- global variables ---------------------------------------- */ |
| 130 | |
Jan Kiszka | b8f433d | 2010-02-08 10:12:17 +0000 | [diff] [blame] | 131 | static DEFINE_MUTEX(capidev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | static LIST_HEAD(capidev_list); |
| 133 | |
| 134 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 135 | |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 136 | static DEFINE_SPINLOCK(capiminors_lock); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 137 | static struct capiminor **capiminors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 139 | static struct tty_driver *capinc_tty_driver; |
| 140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | /* -------- datahandles --------------------------------------------- */ |
| 142 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 143 | static int capiminor_add_ack(struct capiminor *mp, u16 datahandle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | { |
Jan Kiszka | 42651b5 | 2010-02-08 10:12:37 +0000 | [diff] [blame] | 145 | struct ackqueue_entry *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
| 147 | n = kmalloc(sizeof(*n), GFP_ATOMIC); |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 148 | if (unlikely(!n)) { |
| 149 | printk(KERN_ERR "capi: alloc datahandle failed\n"); |
| 150 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | n->datahandle = datahandle; |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 153 | INIT_LIST_HEAD(&n->list); |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 154 | spin_lock_bh(&mp->ackqlock); |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 155 | list_add_tail(&n->list, &mp->ackqueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | mp->nack++; |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 157 | spin_unlock_bh(&mp->ackqlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) |
| 162 | { |
Jan Kiszka | 42651b5 | 2010-02-08 10:12:37 +0000 | [diff] [blame] | 163 | struct ackqueue_entry *p, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 165 | spin_lock_bh(&mp->ackqlock); |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 166 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 167 | if (p->datahandle == datahandle) { |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 168 | list_del(&p->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | mp->nack--; |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 170 | spin_unlock_bh(&mp->ackqlock); |
| 171 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | return 0; |
| 173 | } |
| 174 | } |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 175 | spin_unlock_bh(&mp->ackqlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | return -1; |
| 177 | } |
| 178 | |
| 179 | static void capiminor_del_all_ack(struct capiminor *mp) |
| 180 | { |
Jan Kiszka | 42651b5 | 2010-02-08 10:12:37 +0000 | [diff] [blame] | 181 | struct ackqueue_entry *p, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 183 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { |
| 184 | list_del(&p->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | kfree(p); |
| 186 | mp->nack--; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | |
| 191 | /* -------- struct capiminor ---------------------------------------- */ |
| 192 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 193 | static const struct tty_port_operations capiminor_port_ops; /* we have none */ |
| 194 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) |
| 196 | { |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 197 | struct capiminor *mp; |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 198 | struct device *dev; |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 199 | unsigned int minor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
Jan Kiszka | 54f0fad | 2010-02-08 10:12:20 +0000 | [diff] [blame] | 201 | mp = kzalloc(sizeof(*mp), GFP_KERNEL); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 202 | if (!mp) { |
| 203 | printk(KERN_ERR "capi: can't alloc capiminor\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | return NULL; |
| 205 | } |
| 206 | |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 207 | kref_init(&mp->kref); |
| 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | mp->ap = ap; |
| 210 | mp->ncci = ncci; |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 211 | INIT_LIST_HEAD(&mp->ackqueue); |
| 212 | spin_lock_init(&mp->ackqlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
| 214 | skb_queue_head_init(&mp->inqueue); |
| 215 | skb_queue_head_init(&mp->outqueue); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 216 | spin_lock_init(&mp->outlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 218 | tty_port_init(&mp->port); |
| 219 | mp->port.ops = &capiminor_port_ops; |
| 220 | |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 221 | /* Allocate the least unused minor number. */ |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 222 | spin_lock(&capiminors_lock); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 223 | for (minor = 0; minor < capi_ttyminors; minor++) |
| 224 | if (!capiminors[minor]) { |
| 225 | capiminors[minor] = mp; |
| 226 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | } |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 228 | spin_unlock(&capiminors_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 230 | if (minor == capi_ttyminors) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | printk(KERN_NOTICE "capi: out of minors\n"); |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 232 | goto err_out1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | } |
| 234 | |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 235 | mp->minor = minor; |
| 236 | |
Jiri Slaby | 734cc17 | 2012-08-07 21:47:47 +0200 | [diff] [blame] | 237 | dev = tty_port_register_device(&mp->port, capinc_tty_driver, minor, |
| 238 | NULL); |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 239 | if (IS_ERR(dev)) |
| 240 | goto err_out2; |
| 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | return mp; |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 243 | |
| 244 | err_out2: |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 245 | spin_lock(&capiminors_lock); |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 246 | capiminors[minor] = NULL; |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 247 | spin_unlock(&capiminors_lock); |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 248 | |
| 249 | err_out1: |
| 250 | kfree(mp); |
| 251 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 254 | static void capiminor_destroy(struct kref *kref) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | { |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 256 | struct capiminor *mp = container_of(kref, struct capiminor, kref); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 258 | kfree_skb(mp->outskb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | skb_queue_purge(&mp->inqueue); |
| 260 | skb_queue_purge(&mp->outqueue); |
| 261 | capiminor_del_all_ack(mp); |
| 262 | kfree(mp); |
| 263 | } |
| 264 | |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 265 | static struct capiminor *capiminor_get(unsigned int minor) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | { |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 267 | struct capiminor *mp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 269 | spin_lock(&capiminors_lock); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 270 | mp = capiminors[minor]; |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 271 | if (mp) |
| 272 | kref_get(&mp->kref); |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 273 | spin_unlock(&capiminors_lock); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 274 | |
| 275 | return mp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 278 | static inline void capiminor_put(struct capiminor *mp) |
| 279 | { |
| 280 | kref_put(&mp->kref, capiminor_destroy); |
| 281 | } |
| 282 | |
| 283 | static void capiminor_free(struct capiminor *mp) |
| 284 | { |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 285 | tty_unregister_device(capinc_tty_driver, mp->minor); |
| 286 | |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 287 | spin_lock(&capiminors_lock); |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 288 | capiminors[mp->minor] = NULL; |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 289 | spin_unlock(&capiminors_lock); |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 290 | |
| 291 | capiminor_put(mp); |
| 292 | } |
| 293 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | /* -------- struct capincci ----------------------------------------- */ |
| 295 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 296 | static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | { |
Jan Kiszka | 1f90d66 | 2011-04-06 10:58:37 +0000 | [diff] [blame] | 298 | if (cdev->userflags & CAPIFLAG_HIGHJACKING) |
| 299 | np->minorp = capiminor_alloc(&cdev->ap, np->ncci); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | static void capincci_free_minor(struct capincci *np) |
| 303 | { |
| 304 | struct capiminor *mp = np->minorp; |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 305 | struct tty_struct *tty; |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 306 | |
| 307 | if (mp) { |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 308 | tty = tty_port_tty_get(&mp->port); |
| 309 | if (tty) { |
Jan Kiszka | 30bced9 | 2010-02-08 10:12:31 +0000 | [diff] [blame] | 310 | tty_vhangup(tty); |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 311 | tty_kref_put(tty); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 312 | } |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 313 | |
| 314 | capiminor_free(mp); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 315 | } |
| 316 | } |
| 317 | |
| 318 | static inline unsigned int capincci_minor_opencount(struct capincci *np) |
| 319 | { |
| 320 | struct capiminor *mp = np->minorp; |
Jan Kiszka | a84fdf4 | 2010-02-08 10:12:34 +0000 | [diff] [blame] | 321 | unsigned int count = 0; |
| 322 | struct tty_struct *tty; |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 323 | |
Jan Kiszka | a84fdf4 | 2010-02-08 10:12:34 +0000 | [diff] [blame] | 324 | if (mp) { |
| 325 | tty = tty_port_tty_get(&mp->port); |
| 326 | if (tty) { |
| 327 | count = tty->count; |
| 328 | tty_kref_put(tty); |
| 329 | } |
| 330 | } |
| 331 | return count; |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 335 | |
| 336 | static inline void |
| 337 | capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { } |
| 338 | static inline void capincci_free_minor(struct capincci *np) { } |
| 339 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 340 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 341 | |
| 342 | static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) |
| 343 | { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 344 | struct capincci *np; |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 345 | |
Jan Kiszka | 54f0fad | 2010-02-08 10:12:20 +0000 | [diff] [blame] | 346 | np = kzalloc(sizeof(*np), GFP_KERNEL); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 347 | if (!np) |
| 348 | return NULL; |
| 349 | np->ncci = ncci; |
| 350 | np->cdev = cdev; |
| 351 | |
| 352 | capincci_alloc_minor(cdev, np); |
| 353 | |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 354 | list_add_tail(&np->list, &cdev->nccis); |
| 355 | |
| 356 | return np; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | static void capincci_free(struct capidev *cdev, u32 ncci) |
| 360 | { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 361 | struct capincci *np, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 363 | list_for_each_entry_safe(np, tmp, &cdev->nccis, list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | if (ncci == 0xffffffff || np->ncci == ncci) { |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 365 | capincci_free_minor(np); |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 366 | list_del(&np->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | kfree(np); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | } |
| 370 | |
Tilman Schmidt | 7dc2ce5 | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 371 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | static struct capincci *capincci_find(struct capidev *cdev, u32 ncci) |
| 373 | { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 374 | struct capincci *np; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 376 | list_for_each_entry(np, &cdev->nccis, list) |
| 377 | if (np->ncci == ncci) |
| 378 | return np; |
| 379 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | } |
| 381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | /* -------- handle data queue --------------------------------------- */ |
| 383 | |
| 384 | static struct sk_buff * |
| 385 | gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) |
| 386 | { |
| 387 | struct sk_buff *nskb; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 388 | nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | if (nskb) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 390 | u16 datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 4 + 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN); |
| 392 | capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN); |
| 393 | capimsg_setu16(s, 2, mp->ap->applid); |
| 394 | capimsg_setu8 (s, 4, CAPI_DATA_B3); |
| 395 | capimsg_setu8 (s, 5, CAPI_RESP); |
Jan Kiszka | 4279271 | 2010-02-08 10:12:38 +0000 | [diff] [blame] | 396 | capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | capimsg_setu32(s, 8, mp->ncci); |
| 398 | capimsg_setu16(s, 12, datahandle); |
| 399 | } |
| 400 | return nskb; |
| 401 | } |
| 402 | |
| 403 | static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) |
| 404 | { |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 405 | unsigned int datalen = skb->len - CAPIMSG_LEN(skb->data); |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 406 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | struct sk_buff *nskb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | u16 errcode, datahandle; |
| 409 | struct tty_ldisc *ld; |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 410 | int ret = -1; |
| 411 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 412 | tty = tty_port_tty_get(&mp->port); |
| 413 | if (!tty) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 414 | pr_debug("capi: currently no receiver\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | return -1; |
| 416 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 417 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 418 | ld = tty_ldisc_ref(tty); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 419 | if (!ld) { |
| 420 | /* fatal error, do not requeue */ |
| 421 | ret = 0; |
| 422 | kfree_skb(skb); |
| 423 | goto deref_tty; |
| 424 | } |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 425 | |
Alan Cox | a352def | 2008-07-16 21:53:12 +0100 | [diff] [blame] | 426 | if (ld->ops->receive_buf == NULL) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 427 | pr_debug("capi: ldisc has no receive_buf function\n"); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 428 | /* fatal error, do not requeue */ |
| 429 | goto free_skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | } |
| 431 | if (mp->ttyinstop) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 432 | pr_debug("capi: recv tty throttled\n"); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 433 | goto deref_ldisc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | } |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 435 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 436 | if (tty->receive_room < datalen) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 437 | pr_debug("capi: no room in tty\n"); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 438 | goto deref_ldisc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | } |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 440 | |
| 441 | nskb = gen_data_b3_resp_for(mp, skb); |
| 442 | if (!nskb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 444 | goto deref_ldisc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | } |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 446 | |
| 447 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4); |
| 448 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | errcode = capi20_put_message(mp->ap, nskb); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 450 | |
| 451 | if (errcode == CAPI_NOERROR) { |
| 452 | skb_pull(skb, CAPIMSG_LEN(skb->data)); |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 453 | pr_debug("capi: DATA_B3_RESP %u len=%d => ldisc\n", |
| 454 | datahandle, skb->len); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 455 | ld->ops->receive_buf(tty, skb->data, NULL, skb->len); |
| 456 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 458 | errcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | kfree_skb(nskb); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 460 | |
| 461 | if (errcode == CAPI_SENDQUEUEFULL) |
| 462 | goto deref_ldisc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 464 | |
| 465 | free_skb: |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 466 | ret = 0; |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 467 | kfree_skb(skb); |
| 468 | |
| 469 | deref_ldisc: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | tty_ldisc_deref(ld); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 471 | |
| 472 | deref_tty: |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 473 | tty_kref_put(tty); |
| 474 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | } |
| 476 | |
| 477 | static void handle_minor_recv(struct capiminor *mp) |
| 478 | { |
| 479 | struct sk_buff *skb; |
Jan Kiszka | 68d7347 | 2010-02-08 10:12:39 +0000 | [diff] [blame] | 480 | |
| 481 | while ((skb = skb_dequeue(&mp->inqueue)) != NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | if (handle_recv_skb(mp, skb) < 0) { |
| 483 | skb_queue_head(&mp->inqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | return; |
| 485 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | } |
| 487 | |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 488 | static void handle_minor_send(struct capiminor *mp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | { |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 490 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | struct sk_buff *skb; |
| 492 | u16 len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | u16 errcode; |
| 494 | u16 datahandle; |
| 495 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 496 | tty = tty_port_tty_get(&mp->port); |
| 497 | if (!tty) |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 498 | return; |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 499 | |
| 500 | if (mp->ttyoutstop) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 501 | pr_debug("capi: send: tty stopped\n"); |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 502 | tty_kref_put(tty); |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 503 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | } |
| 505 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 506 | while (1) { |
| 507 | spin_lock_bh(&mp->outlock); |
| 508 | skb = __skb_dequeue(&mp->outqueue); |
| 509 | if (!skb) { |
| 510 | spin_unlock_bh(&mp->outlock); |
| 511 | break; |
| 512 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | len = (u16)skb->len; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 514 | mp->outbytes -= len; |
| 515 | spin_unlock_bh(&mp->outlock); |
| 516 | |
| 517 | datahandle = atomic_inc_return(&mp->datahandle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); |
| 519 | memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); |
| 520 | capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); |
| 521 | capimsg_setu16(skb->data, 2, mp->ap->applid); |
| 522 | capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); |
| 523 | capimsg_setu8 (skb->data, 5, CAPI_REQ); |
Jan Kiszka | 4279271 | 2010-02-08 10:12:38 +0000 | [diff] [blame] | 524 | capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ |
Andrew Morton | 5e6c20a | 2007-07-17 04:04:22 -0700 | [diff] [blame] | 526 | capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | capimsg_setu16(skb->data, 16, len); /* Data length */ |
| 528 | capimsg_setu16(skb->data, 18, datahandle); |
| 529 | capimsg_setu16(skb->data, 20, 0); /* Flags */ |
| 530 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 531 | if (capiminor_add_ack(mp, datahandle) < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 533 | |
| 534 | spin_lock_bh(&mp->outlock); |
| 535 | __skb_queue_head(&mp->outqueue, skb); |
| 536 | mp->outbytes += len; |
| 537 | spin_unlock_bh(&mp->outlock); |
| 538 | |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 539 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | } |
| 541 | errcode = capi20_put_message(mp->ap, skb); |
| 542 | if (errcode == CAPI_NOERROR) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 543 | pr_debug("capi: DATA_B3_REQ %u len=%u\n", |
| 544 | datahandle, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | continue; |
| 546 | } |
| 547 | capiminor_del_ack(mp, datahandle); |
| 548 | |
| 549 | if (errcode == CAPI_SENDQUEUEFULL) { |
| 550 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 551 | |
| 552 | spin_lock_bh(&mp->outlock); |
| 553 | __skb_queue_head(&mp->outqueue, skb); |
| 554 | mp->outbytes += len; |
| 555 | spin_unlock_bh(&mp->outlock); |
| 556 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | break; |
| 558 | } |
| 559 | |
| 560 | /* ups, drop packet */ |
| 561 | printk(KERN_ERR "capi: put_message = %x\n", errcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | kfree_skb(skb); |
| 563 | } |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 564 | tty_kref_put(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | } |
| 566 | |
| 567 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 568 | /* -------- function called by lower level -------------------------- */ |
| 569 | |
| 570 | static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) |
| 571 | { |
| 572 | struct capidev *cdev = ap->private; |
| 573 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 574 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | struct capiminor *mp; |
| 576 | u16 datahandle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | struct capincci *np; |
Tilman Schmidt | 7dc2ce5 | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 578 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 580 | mutex_lock(&cdev->lock); |
| 581 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { |
| 583 | u16 info = CAPIMSG_U16(skb->data, 12); // Info field |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 584 | if ((info & 0xff00) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 587 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { |
| 591 | skb_queue_tail(&cdev->recvqueue, skb); |
| 592 | wake_up_interruptible(&cdev->recvwait); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 593 | goto unlock_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 595 | |
Tilman Schmidt | 7dc2ce5 | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 596 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
| 597 | skb_queue_tail(&cdev->recvqueue, skb); |
| 598 | wake_up_interruptible(&cdev->recvwait); |
| 599 | |
| 600 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 601 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 602 | np = capincci_find(cdev, CAPIMSG_CONTROL(skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | if (!np) { |
| 604 | printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); |
| 605 | skb_queue_tail(&cdev->recvqueue, skb); |
| 606 | wake_up_interruptible(&cdev->recvwait); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 607 | goto unlock_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | } |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 609 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | mp = np->minorp; |
| 611 | if (!mp) { |
| 612 | skb_queue_tail(&cdev->recvqueue, skb); |
| 613 | wake_up_interruptible(&cdev->recvwait); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 614 | goto unlock_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 617 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 4 + 2); |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 618 | pr_debug("capi_signal: DATA_B3_IND %u len=%d\n", |
| 619 | datahandle, skb->len-CAPIMSG_LEN(skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | skb_queue_tail(&mp->inqueue, skb); |
Jan Kiszka | 68d7347 | 2010-02-08 10:12:39 +0000 | [diff] [blame] | 621 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | handle_minor_recv(mp); |
| 623 | |
| 624 | } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { |
| 625 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 626 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4); |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 627 | pr_debug("capi_signal: DATA_B3_CONF %u 0x%x\n", |
| 628 | datahandle, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 629 | CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 2)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | kfree_skb(skb); |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 631 | capiminor_del_ack(mp, datahandle); |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 632 | tty = tty_port_tty_get(&mp->port); |
| 633 | if (tty) { |
| 634 | tty_wakeup(tty); |
| 635 | tty_kref_put(tty); |
| 636 | } |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 637 | handle_minor_send(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
| 639 | } else { |
| 640 | /* ups, let capi application handle it :-) */ |
| 641 | skb_queue_tail(&cdev->recvqueue, skb); |
| 642 | wake_up_interruptible(&cdev->recvwait); |
| 643 | } |
| 644 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 645 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 646 | unlock_out: |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 647 | mutex_unlock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | } |
| 649 | |
| 650 | /* -------- file_operations for capidev ----------------------------- */ |
| 651 | |
| 652 | static ssize_t |
| 653 | capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) |
| 654 | { |
Joe Perches | 54cbb1c | 2010-07-12 10:50:02 +0000 | [diff] [blame] | 655 | struct capidev *cdev = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | struct sk_buff *skb; |
| 657 | size_t copied; |
Jan Kiszka | 28a1dbb | 2010-02-08 10:12:21 +0000 | [diff] [blame] | 658 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | |
| 660 | if (!cdev->ap.applid) |
| 661 | return -ENODEV; |
| 662 | |
Jan Kiszka | 28a1dbb | 2010-02-08 10:12:21 +0000 | [diff] [blame] | 663 | skb = skb_dequeue(&cdev->recvqueue); |
| 664 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | if (file->f_flags & O_NONBLOCK) |
| 666 | return -EAGAIN; |
Jan Kiszka | 28a1dbb | 2010-02-08 10:12:21 +0000 | [diff] [blame] | 667 | err = wait_event_interruptible(cdev->recvwait, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 668 | (skb = skb_dequeue(&cdev->recvqueue))); |
Jan Kiszka | 28a1dbb | 2010-02-08 10:12:21 +0000 | [diff] [blame] | 669 | if (err) |
| 670 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | } |
| 672 | if (skb->len > count) { |
| 673 | skb_queue_head(&cdev->recvqueue, skb); |
| 674 | return -EMSGSIZE; |
| 675 | } |
| 676 | if (copy_to_user(buf, skb->data, skb->len)) { |
| 677 | skb_queue_head(&cdev->recvqueue, skb); |
| 678 | return -EFAULT; |
| 679 | } |
| 680 | copied = skb->len; |
| 681 | |
| 682 | kfree_skb(skb); |
| 683 | |
| 684 | return copied; |
| 685 | } |
| 686 | |
| 687 | static ssize_t |
| 688 | capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) |
| 689 | { |
Joe Perches | 54cbb1c | 2010-07-12 10:50:02 +0000 | [diff] [blame] | 690 | struct capidev *cdev = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | struct sk_buff *skb; |
| 692 | u16 mlen; |
| 693 | |
| 694 | if (!cdev->ap.applid) |
| 695 | return -ENODEV; |
| 696 | |
| 697 | skb = alloc_skb(count, GFP_USER); |
| 698 | if (!skb) |
| 699 | return -ENOMEM; |
| 700 | |
| 701 | if (copy_from_user(skb_put(skb, count), buf, count)) { |
| 702 | kfree_skb(skb); |
| 703 | return -EFAULT; |
| 704 | } |
| 705 | mlen = CAPIMSG_LEN(skb->data); |
| 706 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { |
| 707 | if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { |
| 708 | kfree_skb(skb); |
| 709 | return -EINVAL; |
| 710 | } |
| 711 | } else { |
| 712 | if (mlen != count) { |
| 713 | kfree_skb(skb); |
| 714 | return -EINVAL; |
| 715 | } |
| 716 | } |
| 717 | CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); |
| 718 | |
| 719 | if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 720 | mutex_lock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | capincci_free(cdev, CAPIMSG_NCCI(skb->data)); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 722 | mutex_unlock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | } |
| 724 | |
| 725 | cdev->errcode = capi20_put_message(&cdev->ap, skb); |
| 726 | |
| 727 | if (cdev->errcode) { |
| 728 | kfree_skb(skb); |
| 729 | return -EIO; |
| 730 | } |
| 731 | return count; |
| 732 | } |
| 733 | |
| 734 | static unsigned int |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 735 | capi_poll(struct file *file, poll_table *wait) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | { |
Joe Perches | 54cbb1c | 2010-07-12 10:50:02 +0000 | [diff] [blame] | 737 | struct capidev *cdev = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | unsigned int mask = 0; |
| 739 | |
| 740 | if (!cdev->ap.applid) |
| 741 | return POLLERR; |
| 742 | |
| 743 | poll_wait(file, &(cdev->recvwait), wait); |
| 744 | mask = POLLOUT | POLLWRNORM; |
| 745 | if (!skb_queue_empty(&cdev->recvqueue)) |
| 746 | mask |= POLLIN | POLLRDNORM; |
| 747 | return mask; |
| 748 | } |
| 749 | |
| 750 | static int |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 751 | capi_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | { |
| 753 | struct capidev *cdev = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | capi_ioctl_struct data; |
| 755 | int retval = -EINVAL; |
| 756 | void __user *argp = (void __user *)arg; |
| 757 | |
| 758 | switch (cmd) { |
| 759 | case CAPI_REGISTER: |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 760 | mutex_lock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 762 | if (cdev->ap.applid) { |
| 763 | retval = -EEXIST; |
| 764 | goto register_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 766 | if (copy_from_user(&cdev->ap.rparam, argp, |
| 767 | sizeof(struct capi_register_params))) { |
| 768 | retval = -EFAULT; |
| 769 | goto register_out; |
| 770 | } |
| 771 | cdev->ap.private = cdev; |
| 772 | cdev->ap.recv_message = capi_recv_message; |
| 773 | cdev->errcode = capi20_register(&cdev->ap); |
| 774 | retval = (int)cdev->ap.applid; |
| 775 | if (cdev->errcode) { |
| 776 | cdev->ap.applid = 0; |
| 777 | retval = -EIO; |
| 778 | } |
| 779 | |
| 780 | register_out: |
| 781 | mutex_unlock(&cdev->lock); |
| 782 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | |
| 784 | case CAPI_GET_VERSION: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 785 | if (copy_from_user(&data.contr, argp, |
| 786 | sizeof(data.contr))) |
| 787 | return -EFAULT; |
| 788 | cdev->errcode = capi20_get_version(data.contr, &data.version); |
| 789 | if (cdev->errcode) |
| 790 | return -EIO; |
| 791 | if (copy_to_user(argp, &data.version, |
| 792 | sizeof(data.version))) |
| 793 | return -EFAULT; |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 794 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | |
| 796 | case CAPI_GET_SERIAL: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 797 | if (copy_from_user(&data.contr, argp, |
| 798 | sizeof(data.contr))) |
| 799 | return -EFAULT; |
| 800 | cdev->errcode = capi20_get_serial(data.contr, data.serial); |
| 801 | if (cdev->errcode) |
| 802 | return -EIO; |
| 803 | if (copy_to_user(argp, data.serial, |
| 804 | sizeof(data.serial))) |
| 805 | return -EFAULT; |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 806 | return 0; |
| 807 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 808 | case CAPI_GET_PROFILE: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 809 | if (copy_from_user(&data.contr, argp, |
| 810 | sizeof(data.contr))) |
| 811 | return -EFAULT; |
| 812 | |
| 813 | if (data.contr == 0) { |
| 814 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | if (cdev->errcode) |
| 816 | return -EIO; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 817 | |
| 818 | retval = copy_to_user(argp, |
| 819 | &data.profile.ncontroller, |
| 820 | sizeof(data.profile.ncontroller)); |
| 821 | |
| 822 | } else { |
| 823 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); |
| 824 | if (cdev->errcode) |
| 825 | return -EIO; |
| 826 | |
| 827 | retval = copy_to_user(argp, &data.profile, |
| 828 | sizeof(data.profile)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 830 | if (retval) |
| 831 | return -EFAULT; |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 832 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | |
| 834 | case CAPI_GET_MANUFACTURER: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 835 | if (copy_from_user(&data.contr, argp, |
| 836 | sizeof(data.contr))) |
| 837 | return -EFAULT; |
| 838 | cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); |
| 839 | if (cdev->errcode) |
| 840 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 842 | if (copy_to_user(argp, data.manufacturer, |
| 843 | sizeof(data.manufacturer))) |
| 844 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 846 | return 0; |
| 847 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | case CAPI_GET_ERRCODE: |
| 849 | data.errcode = cdev->errcode; |
| 850 | cdev->errcode = CAPI_NOERROR; |
| 851 | if (arg) { |
| 852 | if (copy_to_user(argp, &data.errcode, |
| 853 | sizeof(data.errcode))) |
| 854 | return -EFAULT; |
| 855 | } |
| 856 | return data.errcode; |
| 857 | |
| 858 | case CAPI_INSTALLED: |
| 859 | if (capi20_isinstalled() == CAPI_NOERROR) |
| 860 | return 0; |
| 861 | return -ENXIO; |
| 862 | |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 863 | case CAPI_MANUFACTURER_CMD: { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 864 | struct capi_manufacturer_cmd mcmd; |
| 865 | if (!capable(CAP_SYS_ADMIN)) |
| 866 | return -EPERM; |
| 867 | if (copy_from_user(&mcmd, argp, sizeof(mcmd))) |
| 868 | return -EFAULT; |
| 869 | return capi20_manufacturer(mcmd.cmd, mcmd.data); |
| 870 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | case CAPI_SET_FLAGS: |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 872 | case CAPI_CLR_FLAGS: { |
| 873 | unsigned userflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 875 | if (copy_from_user(&userflags, argp, sizeof(userflags))) |
| 876 | return -EFAULT; |
| 877 | |
| 878 | mutex_lock(&cdev->lock); |
| 879 | if (cmd == CAPI_SET_FLAGS) |
| 880 | cdev->userflags |= userflags; |
| 881 | else |
| 882 | cdev->userflags &= ~userflags; |
| 883 | mutex_unlock(&cdev->lock); |
| 884 | return 0; |
| 885 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | case CAPI_GET_FLAGS: |
| 887 | if (copy_to_user(argp, &cdev->userflags, |
| 888 | sizeof(cdev->userflags))) |
| 889 | return -EFAULT; |
| 890 | return 0; |
| 891 | |
Tilman Schmidt | 7dc2ce5 | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 892 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
| 893 | case CAPI_NCCI_OPENCOUNT: |
| 894 | return 0; |
| 895 | |
| 896 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 897 | case CAPI_NCCI_OPENCOUNT: { |
| 898 | struct capincci *nccip; |
| 899 | unsigned ncci; |
| 900 | int count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 902 | if (copy_from_user(&ncci, argp, sizeof(ncci))) |
| 903 | return -EFAULT; |
| 904 | |
| 905 | mutex_lock(&cdev->lock); |
| 906 | nccip = capincci_find(cdev, (u32)ncci); |
| 907 | if (nccip) |
| 908 | count = capincci_minor_opencount(nccip); |
| 909 | mutex_unlock(&cdev->lock); |
| 910 | return count; |
| 911 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 913 | case CAPI_NCCI_GETUNIT: { |
| 914 | struct capincci *nccip; |
| 915 | struct capiminor *mp; |
| 916 | unsigned ncci; |
| 917 | int unit = -ESRCH; |
| 918 | |
| 919 | if (copy_from_user(&ncci, argp, sizeof(ncci))) |
| 920 | return -EFAULT; |
| 921 | |
| 922 | mutex_lock(&cdev->lock); |
| 923 | nccip = capincci_find(cdev, (u32)ncci); |
| 924 | if (nccip) { |
| 925 | mp = nccip->minorp; |
| 926 | if (mp) |
| 927 | unit = mp->minor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 929 | mutex_unlock(&cdev->lock); |
| 930 | return unit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 932 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 933 | |
| 934 | default: |
| 935 | return -EINVAL; |
| 936 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | } |
| 938 | |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 939 | static long |
| 940 | capi_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 941 | { |
| 942 | int ret; |
| 943 | |
Arnd Bergmann | 76a6492 | 2010-07-11 11:18:53 +0000 | [diff] [blame] | 944 | mutex_lock(&capi_mutex); |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 945 | ret = capi_ioctl(file, cmd, arg); |
Arnd Bergmann | 76a6492 | 2010-07-11 11:18:53 +0000 | [diff] [blame] | 946 | mutex_unlock(&capi_mutex); |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 947 | |
| 948 | return ret; |
| 949 | } |
| 950 | |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 951 | static int capi_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | { |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 953 | struct capidev *cdev; |
| 954 | |
| 955 | cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); |
| 956 | if (!cdev) |
| 957 | return -ENOMEM; |
| 958 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 959 | mutex_init(&cdev->lock); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 960 | skb_queue_head_init(&cdev->recvqueue); |
| 961 | init_waitqueue_head(&cdev->recvwait); |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 962 | INIT_LIST_HEAD(&cdev->nccis); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 963 | file->private_data = cdev; |
| 964 | |
| 965 | mutex_lock(&capidev_list_lock); |
| 966 | list_add_tail(&cdev->list, &capidev_list); |
| 967 | mutex_unlock(&capidev_list_lock); |
| 968 | |
| 969 | return nonseekable_open(inode, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | } |
| 971 | |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 972 | static int capi_release(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | { |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 974 | struct capidev *cdev = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 976 | mutex_lock(&capidev_list_lock); |
| 977 | list_del(&cdev->list); |
| 978 | mutex_unlock(&capidev_list_lock); |
| 979 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 980 | if (cdev->ap.applid) |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 981 | capi20_release(&cdev->ap); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 982 | skb_queue_purge(&cdev->recvqueue); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 983 | capincci_free(cdev, 0xffffffff); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 984 | |
| 985 | kfree(cdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | return 0; |
| 987 | } |
| 988 | |
Arjan van de Ven | 2b8693c | 2007-02-12 00:55:32 -0800 | [diff] [blame] | 989 | static const struct file_operations capi_fops = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | { |
| 991 | .owner = THIS_MODULE, |
| 992 | .llseek = no_llseek, |
| 993 | .read = capi_read, |
| 994 | .write = capi_write, |
| 995 | .poll = capi_poll, |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 996 | .unlocked_ioctl = capi_unlocked_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | .open = capi_open, |
| 998 | .release = capi_release, |
| 999 | }; |
| 1000 | |
| 1001 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
| 1002 | /* -------- tty_operations for capincci ----------------------------- */ |
| 1003 | |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1004 | static int |
| 1005 | capinc_tty_install(struct tty_driver *driver, struct tty_struct *tty) |
| 1006 | { |
Jiri Slaby | 410235f | 2012-03-05 14:52:01 +0100 | [diff] [blame] | 1007 | struct capiminor *mp = capiminor_get(tty->index); |
Jiri Slaby | 81f5835 | 2012-01-30 21:14:30 +0100 | [diff] [blame] | 1008 | int ret = tty_standard_install(driver, tty); |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1009 | |
Jiri Slaby | 81f5835 | 2012-01-30 21:14:30 +0100 | [diff] [blame] | 1010 | if (ret == 0) |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1011 | tty->driver_data = mp; |
Jiri Slaby | 81f5835 | 2012-01-30 21:14:30 +0100 | [diff] [blame] | 1012 | else |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1013 | capiminor_put(mp); |
| 1014 | return ret; |
| 1015 | } |
| 1016 | |
| 1017 | static void capinc_tty_cleanup(struct tty_struct *tty) |
| 1018 | { |
| 1019 | struct capiminor *mp = tty->driver_data; |
| 1020 | tty->driver_data = NULL; |
| 1021 | capiminor_put(mp); |
| 1022 | } |
| 1023 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1024 | static int capinc_tty_open(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | { |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1026 | struct capiminor *mp = tty->driver_data; |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1027 | int err; |
| 1028 | |
| 1029 | err = tty_port_open(&mp->port, tty, filp); |
| 1030 | if (err) |
| 1031 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | handle_minor_recv(mp); |
| 1034 | return 0; |
| 1035 | } |
| 1036 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1037 | static void capinc_tty_close(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | { |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1039 | struct capiminor *mp = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1041 | tty_port_close(&mp->port, tty, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | } |
| 1043 | |
Jan Kiszka | 6576c28 | 2010-02-08 10:12:32 +0000 | [diff] [blame] | 1044 | static int capinc_tty_write(struct tty_struct *tty, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | const unsigned char *buf, int count) |
| 1046 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1047 | struct capiminor *mp = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | struct sk_buff *skb; |
| 1049 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1050 | pr_debug("capinc_tty_write(count=%d)\n", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1052 | spin_lock_bh(&mp->outlock); |
| 1053 | skb = mp->outskb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | if (skb) { |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1055 | mp->outskb = NULL; |
| 1056 | __skb_queue_tail(&mp->outqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | mp->outbytes += skb->len; |
| 1058 | } |
| 1059 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1060 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN + count, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | if (!skb) { |
| 1062 | printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1063 | spin_unlock_bh(&mp->outlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | return -ENOMEM; |
| 1065 | } |
| 1066 | |
| 1067 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); |
| 1068 | memcpy(skb_put(skb, count), buf, count); |
| 1069 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1070 | __skb_queue_tail(&mp->outqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | mp->outbytes += skb->len; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1072 | spin_unlock_bh(&mp->outlock); |
| 1073 | |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 1074 | handle_minor_send(mp); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1075 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | return count; |
| 1077 | } |
| 1078 | |
Alan Cox | f2545a7 | 2008-04-30 00:54:09 -0700 | [diff] [blame] | 1079 | static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1081 | struct capiminor *mp = tty->driver_data; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1082 | bool invoke_send = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | struct sk_buff *skb; |
Alan Cox | f2545a7 | 2008-04-30 00:54:09 -0700 | [diff] [blame] | 1084 | int ret = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1086 | pr_debug("capinc_put_char(%u)\n", ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1088 | spin_lock_bh(&mp->outlock); |
| 1089 | skb = mp->outskb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | if (skb) { |
| 1091 | if (skb_tailroom(skb) > 0) { |
| 1092 | *(skb_put(skb, 1)) = ch; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1093 | goto unlock_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | } |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1095 | mp->outskb = NULL; |
| 1096 | __skb_queue_tail(&mp->outqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | mp->outbytes += skb->len; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1098 | invoke_send = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | } |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1100 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1101 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN + CAPI_MAX_BLKSIZE, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | if (skb) { |
| 1103 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); |
| 1104 | *(skb_put(skb, 1)) = ch; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1105 | mp->outskb = skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | } else { |
| 1107 | printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); |
Alan Cox | f2545a7 | 2008-04-30 00:54:09 -0700 | [diff] [blame] | 1108 | ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | } |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1110 | |
| 1111 | unlock_out: |
| 1112 | spin_unlock_bh(&mp->outlock); |
| 1113 | |
| 1114 | if (invoke_send) |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 1115 | handle_minor_send(mp); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1116 | |
Alan Cox | f2545a7 | 2008-04-30 00:54:09 -0700 | [diff] [blame] | 1117 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | } |
| 1119 | |
| 1120 | static void capinc_tty_flush_chars(struct tty_struct *tty) |
| 1121 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1122 | struct capiminor *mp = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | struct sk_buff *skb; |
| 1124 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1125 | pr_debug("capinc_tty_flush_chars\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1127 | spin_lock_bh(&mp->outlock); |
| 1128 | skb = mp->outskb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | if (skb) { |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1130 | mp->outskb = NULL; |
| 1131 | __skb_queue_tail(&mp->outqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | mp->outbytes += skb->len; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1133 | spin_unlock_bh(&mp->outlock); |
| 1134 | |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 1135 | handle_minor_send(mp); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1136 | } else |
| 1137 | spin_unlock_bh(&mp->outlock); |
| 1138 | |
| 1139 | handle_minor_recv(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | } |
| 1141 | |
| 1142 | static int capinc_tty_write_room(struct tty_struct *tty) |
| 1143 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1144 | struct capiminor *mp = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | int room; |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1146 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); |
| 1148 | room *= CAPI_MAX_BLKSIZE; |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1149 | pr_debug("capinc_tty_write_room = %d\n", room); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | return room; |
| 1151 | } |
| 1152 | |
Adrian Bunk | 408b664 | 2005-05-01 08:59:29 -0700 | [diff] [blame] | 1153 | static int capinc_tty_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1155 | struct capiminor *mp = tty->driver_data; |
| 1156 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1157 | pr_debug("capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", |
| 1158 | mp->outbytes, mp->nack, |
| 1159 | skb_queue_len(&mp->outqueue), |
| 1160 | skb_queue_len(&mp->inqueue)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | return mp->outbytes; |
| 1162 | } |
| 1163 | |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 1164 | static int capinc_tty_ioctl(struct tty_struct *tty, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1165 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | { |
Alan Cox | 6caa76b | 2011-02-14 16:27:22 +0000 | [diff] [blame] | 1167 | return -ENOIOCTLCMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | } |
| 1169 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1170 | static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios *old) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1172 | pr_debug("capinc_tty_set_termios\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | } |
| 1174 | |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1175 | static void capinc_tty_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1177 | struct capiminor *mp = tty->driver_data; |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1178 | pr_debug("capinc_tty_throttle\n"); |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1179 | mp->ttyinstop = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | } |
| 1181 | |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1182 | static void capinc_tty_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1184 | struct capiminor *mp = tty->driver_data; |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1185 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1186 | pr_debug("capinc_tty_unthrottle\n"); |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1187 | mp->ttyinstop = 0; |
| 1188 | handle_minor_recv(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | } |
| 1190 | |
| 1191 | static void capinc_tty_stop(struct tty_struct *tty) |
| 1192 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1193 | struct capiminor *mp = tty->driver_data; |
| 1194 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1195 | pr_debug("capinc_tty_stop\n"); |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1196 | mp->ttyoutstop = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | } |
| 1198 | |
| 1199 | static void capinc_tty_start(struct tty_struct *tty) |
| 1200 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1201 | struct capiminor *mp = tty->driver_data; |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1202 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1203 | pr_debug("capinc_tty_start\n"); |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1204 | mp->ttyoutstop = 0; |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 1205 | handle_minor_send(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | } |
| 1207 | |
| 1208 | static void capinc_tty_hangup(struct tty_struct *tty) |
| 1209 | { |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1210 | struct capiminor *mp = tty->driver_data; |
| 1211 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1212 | pr_debug("capinc_tty_hangup\n"); |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1213 | tty_port_hangup(&mp->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | } |
| 1215 | |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 1216 | static int capinc_tty_break_ctl(struct tty_struct *tty, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1218 | pr_debug("capinc_tty_break_ctl(%d)\n", state); |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 1219 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | } |
| 1221 | |
| 1222 | static void capinc_tty_flush_buffer(struct tty_struct *tty) |
| 1223 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1224 | pr_debug("capinc_tty_flush_buffer\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | } |
| 1226 | |
| 1227 | static void capinc_tty_set_ldisc(struct tty_struct *tty) |
| 1228 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1229 | pr_debug("capinc_tty_set_ldisc\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | } |
| 1231 | |
| 1232 | static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) |
| 1233 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1234 | pr_debug("capinc_tty_send_xchar(%d)\n", ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | } |
| 1236 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 1237 | static const struct tty_operations capinc_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | .open = capinc_tty_open, |
| 1239 | .close = capinc_tty_close, |
| 1240 | .write = capinc_tty_write, |
| 1241 | .put_char = capinc_tty_put_char, |
| 1242 | .flush_chars = capinc_tty_flush_chars, |
| 1243 | .write_room = capinc_tty_write_room, |
| 1244 | .chars_in_buffer = capinc_tty_chars_in_buffer, |
| 1245 | .ioctl = capinc_tty_ioctl, |
| 1246 | .set_termios = capinc_tty_set_termios, |
| 1247 | .throttle = capinc_tty_throttle, |
| 1248 | .unthrottle = capinc_tty_unthrottle, |
| 1249 | .stop = capinc_tty_stop, |
| 1250 | .start = capinc_tty_start, |
| 1251 | .hangup = capinc_tty_hangup, |
| 1252 | .break_ctl = capinc_tty_break_ctl, |
| 1253 | .flush_buffer = capinc_tty_flush_buffer, |
| 1254 | .set_ldisc = capinc_tty_set_ldisc, |
| 1255 | .send_xchar = capinc_tty_send_xchar, |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1256 | .install = capinc_tty_install, |
| 1257 | .cleanup = capinc_tty_cleanup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | }; |
| 1259 | |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1260 | static int __init capinc_tty_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | { |
| 1262 | struct tty_driver *drv; |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1263 | int err; |
| 1264 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | if (capi_ttyminors > CAPINC_MAX_PORTS) |
| 1266 | capi_ttyminors = CAPINC_MAX_PORTS; |
| 1267 | if (capi_ttyminors <= 0) |
| 1268 | capi_ttyminors = CAPINC_NR_PORTS; |
| 1269 | |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 1270 | capiminors = kzalloc(sizeof(struct capi_minor *) * capi_ttyminors, |
| 1271 | GFP_KERNEL); |
| 1272 | if (!capiminors) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | return -ENOMEM; |
| 1274 | |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 1275 | drv = alloc_tty_driver(capi_ttyminors); |
| 1276 | if (!drv) { |
| 1277 | kfree(capiminors); |
| 1278 | return -ENOMEM; |
| 1279 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | drv->driver_name = "capi_nc"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | drv->name = "capi"; |
Jan Kiszka | e95ac14 | 2010-02-08 10:12:26 +0000 | [diff] [blame] | 1282 | drv->major = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | drv->minor_start = 0; |
| 1284 | drv->type = TTY_DRIVER_TYPE_SERIAL; |
| 1285 | drv->subtype = SERIAL_TYPE_NORMAL; |
| 1286 | drv->init_termios = tty_std_termios; |
| 1287 | drv->init_termios.c_iflag = ICRNL; |
| 1288 | drv->init_termios.c_oflag = OPOST | ONLCR; |
| 1289 | drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
| 1290 | drv->init_termios.c_lflag = 0; |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 1291 | drv->flags = |
| 1292 | TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS | |
| 1293 | TTY_DRIVER_DYNAMIC_DEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | tty_set_operations(drv, &capinc_ops); |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1295 | |
| 1296 | err = tty_register_driver(drv); |
| 1297 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | put_tty_driver(drv); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 1299 | kfree(capiminors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | printk(KERN_ERR "Couldn't register capi_nc driver\n"); |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1301 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | } |
| 1303 | capinc_tty_driver = drv; |
| 1304 | return 0; |
| 1305 | } |
| 1306 | |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1307 | static void __exit capinc_tty_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | { |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1309 | tty_unregister_driver(capinc_tty_driver); |
| 1310 | put_tty_driver(capinc_tty_driver); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 1311 | kfree(capiminors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | } |
| 1313 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 1314 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 1315 | |
| 1316 | static inline int capinc_tty_init(void) |
| 1317 | { |
| 1318 | return 0; |
| 1319 | } |
| 1320 | |
| 1321 | static inline void capinc_tty_exit(void) { } |
| 1322 | |
| 1323 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | |
| 1325 | /* -------- /proc functions ----------------------------------------- */ |
| 1326 | |
| 1327 | /* |
| 1328 | * /proc/capi/capi20: |
| 1329 | * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt |
| 1330 | */ |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1331 | static int capi20_proc_show(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1333 | struct capidev *cdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | struct list_head *l; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | |
Jan Kiszka | b8f433d | 2010-02-08 10:12:17 +0000 | [diff] [blame] | 1336 | mutex_lock(&capidev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | list_for_each(l, &capidev_list) { |
| 1338 | cdev = list_entry(l, struct capidev, list); |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1339 | seq_printf(m, "0 %d %lu %lu %lu %lu\n", |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1340 | cdev->ap.applid, |
| 1341 | cdev->ap.nrecvctlpkt, |
| 1342 | cdev->ap.nrecvdatapkt, |
| 1343 | cdev->ap.nsentctlpkt, |
| 1344 | cdev->ap.nsentdatapkt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | } |
Jan Kiszka | b8f433d | 2010-02-08 10:12:17 +0000 | [diff] [blame] | 1346 | mutex_unlock(&capidev_list_lock); |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1347 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | } |
| 1349 | |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1350 | static int capi20_proc_open(struct inode *inode, struct file *file) |
| 1351 | { |
| 1352 | return single_open(file, capi20_proc_show, NULL); |
| 1353 | } |
| 1354 | |
| 1355 | static const struct file_operations capi20_proc_fops = { |
| 1356 | .owner = THIS_MODULE, |
| 1357 | .open = capi20_proc_open, |
| 1358 | .read = seq_read, |
| 1359 | .llseek = seq_lseek, |
| 1360 | .release = single_release, |
| 1361 | }; |
| 1362 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | /* |
| 1364 | * /proc/capi/capi20ncci: |
| 1365 | * applid ncci |
| 1366 | */ |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1367 | static int capi20ncci_proc_show(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 1369 | struct capidev *cdev; |
| 1370 | struct capincci *np; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | |
Jan Kiszka | b8f433d | 2010-02-08 10:12:17 +0000 | [diff] [blame] | 1372 | mutex_lock(&capidev_list_lock); |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 1373 | list_for_each_entry(cdev, &capidev_list, list) { |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 1374 | mutex_lock(&cdev->lock); |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 1375 | list_for_each_entry(np, &cdev->nccis, list) |
| 1376 | seq_printf(m, "%d 0x%x\n", cdev->ap.applid, np->ncci); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 1377 | mutex_unlock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | } |
Jan Kiszka | b8f433d | 2010-02-08 10:12:17 +0000 | [diff] [blame] | 1379 | mutex_unlock(&capidev_list_lock); |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1380 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | } |
| 1382 | |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1383 | static int capi20ncci_proc_open(struct inode *inode, struct file *file) |
| 1384 | { |
| 1385 | return single_open(file, capi20ncci_proc_show, NULL); |
| 1386 | } |
| 1387 | |
| 1388 | static const struct file_operations capi20ncci_proc_fops = { |
| 1389 | .owner = THIS_MODULE, |
| 1390 | .open = capi20ncci_proc_open, |
| 1391 | .read = seq_read, |
| 1392 | .llseek = seq_lseek, |
| 1393 | .release = single_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | }; |
| 1395 | |
| 1396 | static void __init proc_init(void) |
| 1397 | { |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1398 | proc_create("capi/capi20", 0, NULL, &capi20_proc_fops); |
| 1399 | proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | } |
| 1401 | |
| 1402 | static void __exit proc_exit(void) |
| 1403 | { |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1404 | remove_proc_entry("capi/capi20", NULL); |
| 1405 | remove_proc_entry("capi/capi20ncci", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | } |
| 1407 | |
| 1408 | /* -------- init function and module interface ---------------------- */ |
| 1409 | |
| 1410 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | static int __init capi_init(void) |
| 1412 | { |
Jan Kiszka | 88549d6 | 2010-02-08 10:12:09 +0000 | [diff] [blame] | 1413 | const char *compileinfo; |
Andrew Morton | 6d9eac3 | 2006-03-28 01:56:19 -0800 | [diff] [blame] | 1414 | int major_ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | |
Andrew Morton | 6d9eac3 | 2006-03-28 01:56:19 -0800 | [diff] [blame] | 1416 | major_ret = register_chrdev(capi_major, "capi20", &capi_fops); |
| 1417 | if (major_ret < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); |
Andrew Morton | 6d9eac3 | 2006-03-28 01:56:19 -0800 | [diff] [blame] | 1419 | return major_ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | } |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 1421 | capi_class = class_create(THIS_MODULE, "capi"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | if (IS_ERR(capi_class)) { |
| 1423 | unregister_chrdev(capi_major, "capi20"); |
| 1424 | return PTR_ERR(capi_class); |
| 1425 | } |
| 1426 | |
Greg Kroah-Hartman | a9b1261 | 2008-07-21 20:03:34 -0700 | [diff] [blame] | 1427 | device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | if (capinc_tty_init() < 0) { |
Tony Jones | d78b036 | 2007-09-25 02:03:03 +0200 | [diff] [blame] | 1430 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 1431 | class_destroy(capi_class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | unregister_chrdev(capi_major, "capi20"); |
| 1433 | return -ENOMEM; |
| 1434 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | |
| 1436 | proc_init(); |
| 1437 | |
Jan Kiszka | 1f90d66 | 2011-04-06 10:58:37 +0000 | [diff] [blame] | 1438 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1439 | compileinfo = " (middleware)"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | #else |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1441 | compileinfo = " (no middleware)"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | #endif |
Jan Kiszka | 88549d6 | 2010-02-08 10:12:09 +0000 | [diff] [blame] | 1443 | printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n", |
| 1444 | capi_major, compileinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | |
| 1446 | return 0; |
| 1447 | } |
| 1448 | |
| 1449 | static void __exit capi_exit(void) |
| 1450 | { |
| 1451 | proc_exit(); |
| 1452 | |
Tony Jones | d78b036 | 2007-09-25 02:03:03 +0200 | [diff] [blame] | 1453 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 1454 | class_destroy(capi_class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | unregister_chrdev(capi_major, "capi20"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | capinc_tty_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | } |
| 1459 | |
| 1460 | module_init(capi_init); |
| 1461 | module_exit(capi_exit); |