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 | |
Randy Dunlap | 20fbdc3 | 2018-07-07 08:31:15 -0700 | [diff] [blame] | 12 | #include <linux/compiler.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/module.h> |
| 14 | #include <linux/errno.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/major.h> |
| 17 | #include <linux/sched.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <linux/fcntl.h> |
| 20 | #include <linux/fs.h> |
| 21 | #include <linux/signal.h> |
Matthias Kaehlcke | 9ea6e5d | 2007-05-08 00:32:43 -0700 | [diff] [blame] | 22 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/timer.h> |
| 25 | #include <linux/wait.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/tty.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/netdevice.h> |
| 28 | #include <linux/ppp_defs.h> |
Paul Mackerras | 4b32da2b | 2012-03-04 12:56:55 +0000 | [diff] [blame] | 29 | #include <linux/ppp-ioctl.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/skbuff.h> |
| 31 | #include <linux/proc_fs.h> |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 32 | #include <linux/seq_file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/poll.h> |
| 34 | #include <linux/capi.h> |
| 35 | #include <linux/kernelcapi.h> |
| 36 | #include <linux/init.h> |
| 37 | #include <linux/device.h> |
| 38 | #include <linux/moduleparam.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/isdn/capiutil.h> |
| 40 | #include <linux/isdn/capicmd.h> |
Jan Kiszka | 90926f0 | 2010-02-08 10:12:06 +0000 | [diff] [blame] | 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface"); |
| 43 | MODULE_AUTHOR("Carsten Paeth"); |
| 44 | MODULE_LICENSE("GPL"); |
| 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | /* -------- driver information -------------------------------------- */ |
| 47 | |
Arnd Bergmann | 76a6492 | 2010-07-11 11:18:53 +0000 | [diff] [blame] | 48 | static DEFINE_MUTEX(capi_mutex); |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 49 | static struct class *capi_class; |
Adrian Bunk | 408b664 | 2005-05-01 08:59:29 -0700 | [diff] [blame] | 50 | static int capi_major = 68; /* allocated */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | module_param_named(major, capi_major, uint, 0); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 55 | #define CAPINC_NR_PORTS 32 |
| 56 | #define CAPINC_MAX_PORTS 256 |
| 57 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 58 | static int capi_ttyminors = CAPINC_NR_PORTS; |
| 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | module_param_named(ttyminors, capi_ttyminors, uint, 0); |
| 61 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 62 | |
| 63 | /* -------- defines ------------------------------------------------- */ |
| 64 | |
| 65 | #define CAPINC_MAX_RECVQUEUE 10 |
| 66 | #define CAPINC_MAX_SENDQUEUE 10 |
| 67 | #define CAPI_MAX_BLKSIZE 2048 |
| 68 | |
| 69 | /* -------- data structures ----------------------------------------- */ |
| 70 | |
| 71 | struct capidev; |
| 72 | struct capincci; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | struct capiminor; |
| 74 | |
Jan Kiszka | 42651b5 | 2010-02-08 10:12:37 +0000 | [diff] [blame] | 75 | struct ackqueue_entry { |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 76 | struct list_head list; |
| 77 | u16 datahandle; |
| 78 | }; |
| 79 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | struct capiminor { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | unsigned int minor; |
| 82 | |
Jan Kiszka | 4279271 | 2010-02-08 10:12:38 +0000 | [diff] [blame] | 83 | struct capi20_appl *ap; |
| 84 | u32 ncci; |
| 85 | atomic_t datahandle; |
| 86 | atomic_t msgid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 88 | struct tty_port port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | int ttyinstop; |
| 90 | int ttyoutstop; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 92 | struct sk_buff_head inqueue; |
| 93 | |
| 94 | struct sk_buff_head outqueue; |
| 95 | int outbytes; |
| 96 | struct sk_buff *outskb; |
| 97 | spinlock_t outlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | |
| 99 | /* transmit path */ |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 100 | struct list_head ackqueue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | int nack; |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 102 | spinlock_t ackqlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
| 105 | struct capincci { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 106 | struct list_head list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | u32 ncci; |
| 108 | struct capidev *cdev; |
| 109 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
| 110 | struct capiminor *minorp; |
| 111 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 112 | }; |
| 113 | |
| 114 | struct capidev { |
| 115 | struct list_head list; |
| 116 | struct capi20_appl ap; |
| 117 | u16 errcode; |
| 118 | unsigned userflags; |
| 119 | |
| 120 | struct sk_buff_head recvqueue; |
| 121 | wait_queue_head_t recvwait; |
| 122 | |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 123 | struct list_head nccis; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 125 | struct mutex lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | }; |
| 127 | |
| 128 | /* -------- global variables ---------------------------------------- */ |
| 129 | |
Jan Kiszka | b8f433d | 2010-02-08 10:12:17 +0000 | [diff] [blame] | 130 | static DEFINE_MUTEX(capidev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | static LIST_HEAD(capidev_list); |
| 132 | |
| 133 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 134 | |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 135 | static DEFINE_SPINLOCK(capiminors_lock); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 136 | static struct capiminor **capiminors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 138 | static struct tty_driver *capinc_tty_driver; |
| 139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | /* -------- datahandles --------------------------------------------- */ |
| 141 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 142 | static int capiminor_add_ack(struct capiminor *mp, u16 datahandle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | { |
Jan Kiszka | 42651b5 | 2010-02-08 10:12:37 +0000 | [diff] [blame] | 144 | struct ackqueue_entry *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
| 146 | n = kmalloc(sizeof(*n), GFP_ATOMIC); |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 147 | if (unlikely(!n)) { |
| 148 | printk(KERN_ERR "capi: alloc datahandle failed\n"); |
| 149 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | n->datahandle = datahandle; |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 152 | INIT_LIST_HEAD(&n->list); |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 153 | spin_lock_bh(&mp->ackqlock); |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 154 | list_add_tail(&n->list, &mp->ackqueue); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | mp->nack++; |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 156 | spin_unlock_bh(&mp->ackqlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) |
| 161 | { |
Jan Kiszka | 42651b5 | 2010-02-08 10:12:37 +0000 | [diff] [blame] | 162 | struct ackqueue_entry *p, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 164 | spin_lock_bh(&mp->ackqlock); |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 165 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 166 | if (p->datahandle == datahandle) { |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 167 | list_del(&p->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | mp->nack--; |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 169 | spin_unlock_bh(&mp->ackqlock); |
| 170 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | return 0; |
| 172 | } |
| 173 | } |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 174 | spin_unlock_bh(&mp->ackqlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | return -1; |
| 176 | } |
| 177 | |
| 178 | static void capiminor_del_all_ack(struct capiminor *mp) |
| 179 | { |
Jan Kiszka | 42651b5 | 2010-02-08 10:12:37 +0000 | [diff] [blame] | 180 | struct ackqueue_entry *p, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 182 | list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { |
| 183 | list_del(&p->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | kfree(p); |
| 185 | mp->nack--; |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | |
| 190 | /* -------- struct capiminor ---------------------------------------- */ |
| 191 | |
Jiri Slaby | 55bef83c | 2012-11-15 09:49:50 +0100 | [diff] [blame] | 192 | static void capiminor_destroy(struct tty_port *port) |
| 193 | { |
| 194 | struct capiminor *mp = container_of(port, struct capiminor, port); |
| 195 | |
| 196 | kfree_skb(mp->outskb); |
| 197 | skb_queue_purge(&mp->inqueue); |
| 198 | skb_queue_purge(&mp->outqueue); |
| 199 | capiminor_del_all_ack(mp); |
| 200 | kfree(mp); |
| 201 | } |
| 202 | |
| 203 | static const struct tty_port_operations capiminor_port_ops = { |
| 204 | .destruct = capiminor_destroy, |
| 205 | }; |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 206 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) |
| 208 | { |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 209 | struct capiminor *mp; |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 210 | struct device *dev; |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 211 | unsigned int minor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Jan Kiszka | 54f0fad | 2010-02-08 10:12:20 +0000 | [diff] [blame] | 213 | mp = kzalloc(sizeof(*mp), GFP_KERNEL); |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 214 | if (!mp) { |
| 215 | printk(KERN_ERR "capi: can't alloc capiminor\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | return NULL; |
| 217 | } |
| 218 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | mp->ap = ap; |
| 220 | mp->ncci = ncci; |
Michael Buesch | 6aa6547 | 2006-06-26 00:25:30 -0700 | [diff] [blame] | 221 | INIT_LIST_HEAD(&mp->ackqueue); |
| 222 | spin_lock_init(&mp->ackqlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | |
| 224 | skb_queue_head_init(&mp->inqueue); |
| 225 | skb_queue_head_init(&mp->outqueue); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 226 | spin_lock_init(&mp->outlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 228 | tty_port_init(&mp->port); |
| 229 | mp->port.ops = &capiminor_port_ops; |
| 230 | |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 231 | /* Allocate the least unused minor number. */ |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 232 | spin_lock(&capiminors_lock); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 233 | for (minor = 0; minor < capi_ttyminors; minor++) |
| 234 | if (!capiminors[minor]) { |
| 235 | capiminors[minor] = mp; |
| 236 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | } |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 238 | spin_unlock(&capiminors_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 240 | if (minor == capi_ttyminors) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | printk(KERN_NOTICE "capi: out of minors\n"); |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 242 | goto err_out1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | } |
| 244 | |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 245 | mp->minor = minor; |
| 246 | |
Jiri Slaby | 734cc17 | 2012-08-07 21:47:47 +0200 | [diff] [blame] | 247 | dev = tty_port_register_device(&mp->port, capinc_tty_driver, minor, |
| 248 | NULL); |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 249 | if (IS_ERR(dev)) |
| 250 | goto err_out2; |
| 251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | return mp; |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 253 | |
| 254 | err_out2: |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 255 | spin_lock(&capiminors_lock); |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 256 | capiminors[minor] = NULL; |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 257 | spin_unlock(&capiminors_lock); |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 258 | |
| 259 | err_out1: |
Jiri Slaby | 55bef83c | 2012-11-15 09:49:50 +0100 | [diff] [blame] | 260 | tty_port_put(&mp->port); |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 261 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | } |
| 263 | |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 264 | static struct capiminor *capiminor_get(unsigned int minor) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | { |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 266 | struct capiminor *mp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 268 | spin_lock(&capiminors_lock); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 269 | mp = capiminors[minor]; |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 270 | if (mp) |
Jiri Slaby | 55bef83c | 2012-11-15 09:49:50 +0100 | [diff] [blame] | 271 | tty_port_get(&mp->port); |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 272 | spin_unlock(&capiminors_lock); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 273 | |
| 274 | return mp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 277 | static inline void capiminor_put(struct capiminor *mp) |
| 278 | { |
Jiri Slaby | 55bef83c | 2012-11-15 09:49:50 +0100 | [diff] [blame] | 279 | tty_port_put(&mp->port); |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | static void capiminor_free(struct capiminor *mp) |
| 283 | { |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 284 | tty_unregister_device(capinc_tty_driver, mp->minor); |
| 285 | |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 286 | spin_lock(&capiminors_lock); |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 287 | capiminors[mp->minor] = NULL; |
Jan Kiszka | 3d5d30f | 2010-02-08 10:12:33 +0000 | [diff] [blame] | 288 | spin_unlock(&capiminors_lock); |
Jan Kiszka | 0159d54 | 2010-02-08 10:12:27 +0000 | [diff] [blame] | 289 | |
| 290 | capiminor_put(mp); |
| 291 | } |
| 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | /* -------- struct capincci ----------------------------------------- */ |
| 294 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 295 | static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | { |
Jan Kiszka | 1f90d66 | 2011-04-06 10:58:37 +0000 | [diff] [blame] | 297 | if (cdev->userflags & CAPIFLAG_HIGHJACKING) |
| 298 | np->minorp = capiminor_alloc(&cdev->ap, np->ncci); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | static void capincci_free_minor(struct capincci *np) |
| 302 | { |
| 303 | struct capiminor *mp = np->minorp; |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 304 | struct tty_struct *tty; |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 305 | |
| 306 | if (mp) { |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 307 | tty = tty_port_tty_get(&mp->port); |
| 308 | if (tty) { |
Jan Kiszka | 30bced9 | 2010-02-08 10:12:31 +0000 | [diff] [blame] | 309 | tty_vhangup(tty); |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 310 | tty_kref_put(tty); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 311 | } |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 312 | |
| 313 | capiminor_free(mp); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 314 | } |
| 315 | } |
| 316 | |
| 317 | static inline unsigned int capincci_minor_opencount(struct capincci *np) |
| 318 | { |
| 319 | struct capiminor *mp = np->minorp; |
Jan Kiszka | a84fdf4 | 2010-02-08 10:12:34 +0000 | [diff] [blame] | 320 | unsigned int count = 0; |
| 321 | struct tty_struct *tty; |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 322 | |
Jan Kiszka | a84fdf4 | 2010-02-08 10:12:34 +0000 | [diff] [blame] | 323 | if (mp) { |
| 324 | tty = tty_port_tty_get(&mp->port); |
| 325 | if (tty) { |
| 326 | count = tty->count; |
| 327 | tty_kref_put(tty); |
| 328 | } |
| 329 | } |
| 330 | return count; |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 331 | } |
| 332 | |
| 333 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 334 | |
| 335 | static inline void |
| 336 | capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { } |
| 337 | static inline void capincci_free_minor(struct capincci *np) { } |
| 338 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 339 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 340 | |
| 341 | static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) |
| 342 | { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 343 | struct capincci *np; |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 344 | |
Jan Kiszka | 54f0fad | 2010-02-08 10:12:20 +0000 | [diff] [blame] | 345 | np = kzalloc(sizeof(*np), GFP_KERNEL); |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 346 | if (!np) |
| 347 | return NULL; |
| 348 | np->ncci = ncci; |
| 349 | np->cdev = cdev; |
| 350 | |
| 351 | capincci_alloc_minor(cdev, np); |
| 352 | |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 353 | list_add_tail(&np->list, &cdev->nccis); |
| 354 | |
| 355 | return np; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | } |
| 357 | |
| 358 | static void capincci_free(struct capidev *cdev, u32 ncci) |
| 359 | { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 360 | struct capincci *np, *tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 362 | list_for_each_entry_safe(np, tmp, &cdev->nccis, list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | if (ncci == 0xffffffff || np->ncci == ncci) { |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 364 | capincci_free_minor(np); |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 365 | list_del(&np->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | kfree(np); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | } |
| 369 | |
Tilman Schmidt | 7dc2ce5 | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 370 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | static struct capincci *capincci_find(struct capidev *cdev, u32 ncci) |
| 372 | { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 373 | struct capincci *np; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 375 | list_for_each_entry(np, &cdev->nccis, list) |
| 376 | if (np->ncci == ncci) |
| 377 | return np; |
| 378 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | } |
| 380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | /* -------- handle data queue --------------------------------------- */ |
| 382 | |
| 383 | static struct sk_buff * |
| 384 | gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) |
| 385 | { |
| 386 | struct sk_buff *nskb; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 387 | nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | if (nskb) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 389 | u16 datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 4 + 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN); |
| 391 | capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN); |
| 392 | capimsg_setu16(s, 2, mp->ap->applid); |
| 393 | capimsg_setu8 (s, 4, CAPI_DATA_B3); |
| 394 | capimsg_setu8 (s, 5, CAPI_RESP); |
Jan Kiszka | 4279271 | 2010-02-08 10:12:38 +0000 | [diff] [blame] | 395 | capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | capimsg_setu32(s, 8, mp->ncci); |
| 397 | capimsg_setu16(s, 12, datahandle); |
| 398 | } |
| 399 | return nskb; |
| 400 | } |
| 401 | |
| 402 | static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) |
| 403 | { |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 404 | unsigned int datalen = skb->len - CAPIMSG_LEN(skb->data); |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 405 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | struct sk_buff *nskb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | u16 errcode, datahandle; |
| 408 | struct tty_ldisc *ld; |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 409 | int ret = -1; |
| 410 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 411 | tty = tty_port_tty_get(&mp->port); |
| 412 | if (!tty) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 413 | pr_debug("capi: currently no receiver\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | return -1; |
| 415 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 416 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 417 | ld = tty_ldisc_ref(tty); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 418 | if (!ld) { |
| 419 | /* fatal error, do not requeue */ |
| 420 | ret = 0; |
| 421 | kfree_skb(skb); |
| 422 | goto deref_tty; |
| 423 | } |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 424 | |
Alan Cox | a352def | 2008-07-16 21:53:12 +0100 | [diff] [blame] | 425 | if (ld->ops->receive_buf == NULL) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 426 | pr_debug("capi: ldisc has no receive_buf function\n"); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 427 | /* fatal error, do not requeue */ |
| 428 | goto free_skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | } |
| 430 | if (mp->ttyinstop) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 431 | pr_debug("capi: recv tty throttled\n"); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 432 | goto deref_ldisc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | } |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 434 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 435 | if (tty->receive_room < datalen) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 436 | pr_debug("capi: no room in tty\n"); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 437 | goto deref_ldisc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | } |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 439 | |
| 440 | nskb = gen_data_b3_resp_for(mp, skb); |
| 441 | if (!nskb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 443 | goto deref_ldisc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | } |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 445 | |
| 446 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4); |
| 447 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | errcode = capi20_put_message(mp->ap, nskb); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 449 | |
| 450 | if (errcode == CAPI_NOERROR) { |
| 451 | skb_pull(skb, CAPIMSG_LEN(skb->data)); |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 452 | pr_debug("capi: DATA_B3_RESP %u len=%d => ldisc\n", |
| 453 | datahandle, skb->len); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 454 | ld->ops->receive_buf(tty, skb->data, NULL, skb->len); |
| 455 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 457 | errcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | kfree_skb(nskb); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 459 | |
| 460 | if (errcode == CAPI_SENDQUEUEFULL) |
| 461 | goto deref_ldisc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 463 | |
| 464 | free_skb: |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 465 | ret = 0; |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 466 | kfree_skb(skb); |
| 467 | |
| 468 | deref_ldisc: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | tty_ldisc_deref(ld); |
Jan Kiszka | a11ef7b | 2010-02-08 10:12:36 +0000 | [diff] [blame] | 470 | |
| 471 | deref_tty: |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 472 | tty_kref_put(tty); |
| 473 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | } |
| 475 | |
| 476 | static void handle_minor_recv(struct capiminor *mp) |
| 477 | { |
| 478 | struct sk_buff *skb; |
Jan Kiszka | 68d7347 | 2010-02-08 10:12:39 +0000 | [diff] [blame] | 479 | |
| 480 | while ((skb = skb_dequeue(&mp->inqueue)) != NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | if (handle_recv_skb(mp, skb) < 0) { |
| 482 | skb_queue_head(&mp->inqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | return; |
| 484 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | } |
| 486 | |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 487 | static void handle_minor_send(struct capiminor *mp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | { |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 489 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | struct sk_buff *skb; |
| 491 | u16 len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | u16 errcode; |
| 493 | u16 datahandle; |
| 494 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 495 | tty = tty_port_tty_get(&mp->port); |
| 496 | if (!tty) |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 497 | return; |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 498 | |
| 499 | if (mp->ttyoutstop) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 500 | pr_debug("capi: send: tty stopped\n"); |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 501 | tty_kref_put(tty); |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 502 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | } |
| 504 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 505 | while (1) { |
| 506 | spin_lock_bh(&mp->outlock); |
| 507 | skb = __skb_dequeue(&mp->outqueue); |
| 508 | if (!skb) { |
| 509 | spin_unlock_bh(&mp->outlock); |
| 510 | break; |
| 511 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | len = (u16)skb->len; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 513 | mp->outbytes -= len; |
| 514 | spin_unlock_bh(&mp->outlock); |
| 515 | |
| 516 | datahandle = atomic_inc_return(&mp->datahandle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); |
| 518 | memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); |
| 519 | capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); |
| 520 | capimsg_setu16(skb->data, 2, mp->ap->applid); |
| 521 | capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); |
| 522 | capimsg_setu8 (skb->data, 5, CAPI_REQ); |
Jan Kiszka | 4279271 | 2010-02-08 10:12:38 +0000 | [diff] [blame] | 523 | capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ |
Andrew Morton | 5e6c20a | 2007-07-17 04:04:22 -0700 | [diff] [blame] | 525 | capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | capimsg_setu16(skb->data, 16, len); /* Data length */ |
| 527 | capimsg_setu16(skb->data, 18, datahandle); |
| 528 | capimsg_setu16(skb->data, 20, 0); /* Flags */ |
| 529 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 530 | if (capiminor_add_ack(mp, datahandle) < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 532 | |
| 533 | spin_lock_bh(&mp->outlock); |
| 534 | __skb_queue_head(&mp->outqueue, skb); |
| 535 | mp->outbytes += len; |
| 536 | spin_unlock_bh(&mp->outlock); |
| 537 | |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 538 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | } |
| 540 | errcode = capi20_put_message(mp->ap, skb); |
| 541 | if (errcode == CAPI_NOERROR) { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 542 | pr_debug("capi: DATA_B3_REQ %u len=%u\n", |
| 543 | datahandle, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | continue; |
| 545 | } |
| 546 | capiminor_del_ack(mp, datahandle); |
| 547 | |
| 548 | if (errcode == CAPI_SENDQUEUEFULL) { |
| 549 | skb_pull(skb, CAPI_DATA_B3_REQ_LEN); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 550 | |
| 551 | spin_lock_bh(&mp->outlock); |
| 552 | __skb_queue_head(&mp->outqueue, skb); |
| 553 | mp->outbytes += len; |
| 554 | spin_unlock_bh(&mp->outlock); |
| 555 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | break; |
| 557 | } |
| 558 | |
| 559 | /* ups, drop packet */ |
| 560 | printk(KERN_ERR "capi: put_message = %x\n", errcode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | kfree_skb(skb); |
| 562 | } |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 563 | tty_kref_put(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 567 | /* -------- function called by lower level -------------------------- */ |
| 568 | |
| 569 | static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) |
| 570 | { |
| 571 | struct capidev *cdev = ap->private; |
| 572 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
| 573 | struct capiminor *mp; |
| 574 | u16 datahandle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | struct capincci *np; |
Tilman Schmidt | 7dc2ce5 | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 576 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 578 | mutex_lock(&cdev->lock); |
| 579 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { |
| 581 | u16 info = CAPIMSG_U16(skb->data, 12); // Info field |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 582 | if ((info & 0xff00) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 585 | if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { |
| 589 | skb_queue_tail(&cdev->recvqueue, skb); |
| 590 | wake_up_interruptible(&cdev->recvwait); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 591 | goto unlock_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 593 | |
Tilman Schmidt | 7dc2ce5 | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 594 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
| 595 | skb_queue_tail(&cdev->recvqueue, skb); |
| 596 | wake_up_interruptible(&cdev->recvwait); |
| 597 | |
| 598 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 599 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 600 | np = capincci_find(cdev, CAPIMSG_CONTROL(skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | if (!np) { |
| 602 | printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); |
| 603 | skb_queue_tail(&cdev->recvqueue, skb); |
| 604 | wake_up_interruptible(&cdev->recvwait); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 605 | goto unlock_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | } |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | mp = np->minorp; |
| 609 | if (!mp) { |
| 610 | skb_queue_tail(&cdev->recvqueue, skb); |
| 611 | wake_up_interruptible(&cdev->recvwait); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 612 | goto unlock_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 615 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 4 + 2); |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 616 | pr_debug("capi_signal: DATA_B3_IND %u len=%d\n", |
| 617 | datahandle, skb->len-CAPIMSG_LEN(skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | skb_queue_tail(&mp->inqueue, skb); |
Jan Kiszka | 68d7347 | 2010-02-08 10:12:39 +0000 | [diff] [blame] | 619 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | handle_minor_recv(mp); |
| 621 | |
| 622 | } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { |
| 623 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 624 | datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4); |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 625 | pr_debug("capi_signal: DATA_B3_CONF %u 0x%x\n", |
| 626 | datahandle, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 627 | CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 2)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | kfree_skb(skb); |
Jan Kiszka | 2b72b5b | 2010-02-08 10:12:41 +0000 | [diff] [blame] | 629 | capiminor_del_ack(mp, datahandle); |
Jiri Slaby | 6aad04f | 2013-03-07 13:12:29 +0100 | [diff] [blame] | 630 | tty_port_tty_wakeup(&mp->port); |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 631 | handle_minor_send(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | |
| 633 | } else { |
| 634 | /* ups, let capi application handle it :-) */ |
| 635 | skb_queue_tail(&cdev->recvqueue, skb); |
| 636 | wake_up_interruptible(&cdev->recvwait); |
| 637 | } |
| 638 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 639 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 640 | unlock_out: |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 641 | mutex_unlock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } |
| 643 | |
| 644 | /* -------- file_operations for capidev ----------------------------- */ |
| 645 | |
| 646 | static ssize_t |
| 647 | capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) |
| 648 | { |
Joe Perches | 54cbb1c | 2010-07-12 10:50:02 +0000 | [diff] [blame] | 649 | struct capidev *cdev = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | struct sk_buff *skb; |
| 651 | size_t copied; |
Jan Kiszka | 28a1dbb | 2010-02-08 10:12:21 +0000 | [diff] [blame] | 652 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | |
| 654 | if (!cdev->ap.applid) |
| 655 | return -ENODEV; |
| 656 | |
Jan Kiszka | 28a1dbb | 2010-02-08 10:12:21 +0000 | [diff] [blame] | 657 | skb = skb_dequeue(&cdev->recvqueue); |
| 658 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | if (file->f_flags & O_NONBLOCK) |
| 660 | return -EAGAIN; |
Jan Kiszka | 28a1dbb | 2010-02-08 10:12:21 +0000 | [diff] [blame] | 661 | err = wait_event_interruptible(cdev->recvwait, |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 662 | (skb = skb_dequeue(&cdev->recvqueue))); |
Jan Kiszka | 28a1dbb | 2010-02-08 10:12:21 +0000 | [diff] [blame] | 663 | if (err) |
| 664 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | } |
| 666 | if (skb->len > count) { |
| 667 | skb_queue_head(&cdev->recvqueue, skb); |
| 668 | return -EMSGSIZE; |
| 669 | } |
| 670 | if (copy_to_user(buf, skb->data, skb->len)) { |
| 671 | skb_queue_head(&cdev->recvqueue, skb); |
| 672 | return -EFAULT; |
| 673 | } |
| 674 | copied = skb->len; |
| 675 | |
| 676 | kfree_skb(skb); |
| 677 | |
| 678 | return copied; |
| 679 | } |
| 680 | |
| 681 | static ssize_t |
| 682 | capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) |
| 683 | { |
Joe Perches | 54cbb1c | 2010-07-12 10:50:02 +0000 | [diff] [blame] | 684 | struct capidev *cdev = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | struct sk_buff *skb; |
| 686 | u16 mlen; |
| 687 | |
| 688 | if (!cdev->ap.applid) |
| 689 | return -ENODEV; |
| 690 | |
| 691 | skb = alloc_skb(count, GFP_USER); |
| 692 | if (!skb) |
| 693 | return -ENOMEM; |
| 694 | |
| 695 | if (copy_from_user(skb_put(skb, count), buf, count)) { |
| 696 | kfree_skb(skb); |
| 697 | return -EFAULT; |
| 698 | } |
| 699 | mlen = CAPIMSG_LEN(skb->data); |
| 700 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { |
| 701 | if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { |
| 702 | kfree_skb(skb); |
| 703 | return -EINVAL; |
| 704 | } |
| 705 | } else { |
| 706 | if (mlen != count) { |
| 707 | kfree_skb(skb); |
| 708 | return -EINVAL; |
| 709 | } |
| 710 | } |
| 711 | CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); |
| 712 | |
| 713 | if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 714 | mutex_lock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | capincci_free(cdev, CAPIMSG_NCCI(skb->data)); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 716 | mutex_unlock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | } |
| 718 | |
| 719 | cdev->errcode = capi20_put_message(&cdev->ap, skb); |
| 720 | |
| 721 | if (cdev->errcode) { |
| 722 | kfree_skb(skb); |
| 723 | return -EIO; |
| 724 | } |
| 725 | return count; |
| 726 | } |
| 727 | |
Al Viro | afc9a42 | 2017-07-03 06:39:46 -0400 | [diff] [blame] | 728 | static __poll_t |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 729 | capi_poll(struct file *file, poll_table *wait) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | { |
Joe Perches | 54cbb1c | 2010-07-12 10:50:02 +0000 | [diff] [blame] | 731 | struct capidev *cdev = file->private_data; |
Al Viro | afc9a42 | 2017-07-03 06:39:46 -0400 | [diff] [blame] | 732 | __poll_t mask = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | |
| 734 | if (!cdev->ap.applid) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 735 | return EPOLLERR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | |
| 737 | poll_wait(file, &(cdev->recvwait), wait); |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 738 | mask = EPOLLOUT | EPOLLWRNORM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | if (!skb_queue_empty(&cdev->recvqueue)) |
Linus Torvalds | a9a0884 | 2018-02-11 14:34:03 -0800 | [diff] [blame] | 740 | mask |= EPOLLIN | EPOLLRDNORM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | return mask; |
| 742 | } |
| 743 | |
| 744 | static int |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 745 | capi_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | { |
| 747 | struct capidev *cdev = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | capi_ioctl_struct data; |
| 749 | int retval = -EINVAL; |
| 750 | void __user *argp = (void __user *)arg; |
| 751 | |
| 752 | switch (cmd) { |
| 753 | case CAPI_REGISTER: |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 754 | mutex_lock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 756 | if (cdev->ap.applid) { |
| 757 | retval = -EEXIST; |
| 758 | goto register_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 760 | if (copy_from_user(&cdev->ap.rparam, argp, |
| 761 | sizeof(struct capi_register_params))) { |
| 762 | retval = -EFAULT; |
| 763 | goto register_out; |
| 764 | } |
| 765 | cdev->ap.private = cdev; |
| 766 | cdev->ap.recv_message = capi_recv_message; |
| 767 | cdev->errcode = capi20_register(&cdev->ap); |
| 768 | retval = (int)cdev->ap.applid; |
| 769 | if (cdev->errcode) { |
| 770 | cdev->ap.applid = 0; |
| 771 | retval = -EIO; |
| 772 | } |
| 773 | |
| 774 | register_out: |
| 775 | mutex_unlock(&cdev->lock); |
| 776 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | |
| 778 | case CAPI_GET_VERSION: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 779 | if (copy_from_user(&data.contr, argp, |
| 780 | sizeof(data.contr))) |
| 781 | return -EFAULT; |
| 782 | cdev->errcode = capi20_get_version(data.contr, &data.version); |
| 783 | if (cdev->errcode) |
| 784 | return -EIO; |
| 785 | if (copy_to_user(argp, &data.version, |
| 786 | sizeof(data.version))) |
| 787 | return -EFAULT; |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 788 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | |
| 790 | case CAPI_GET_SERIAL: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 791 | if (copy_from_user(&data.contr, argp, |
| 792 | sizeof(data.contr))) |
| 793 | return -EFAULT; |
| 794 | cdev->errcode = capi20_get_serial(data.contr, data.serial); |
| 795 | if (cdev->errcode) |
| 796 | return -EIO; |
| 797 | if (copy_to_user(argp, data.serial, |
| 798 | sizeof(data.serial))) |
| 799 | return -EFAULT; |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 800 | return 0; |
| 801 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 802 | case CAPI_GET_PROFILE: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 803 | if (copy_from_user(&data.contr, argp, |
| 804 | sizeof(data.contr))) |
| 805 | return -EFAULT; |
| 806 | |
| 807 | if (data.contr == 0) { |
| 808 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | if (cdev->errcode) |
| 810 | return -EIO; |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 811 | |
| 812 | retval = copy_to_user(argp, |
| 813 | &data.profile.ncontroller, |
| 814 | sizeof(data.profile.ncontroller)); |
| 815 | |
| 816 | } else { |
| 817 | cdev->errcode = capi20_get_profile(data.contr, &data.profile); |
| 818 | if (cdev->errcode) |
| 819 | return -EIO; |
| 820 | |
| 821 | retval = copy_to_user(argp, &data.profile, |
| 822 | sizeof(data.profile)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | } |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 824 | if (retval) |
| 825 | return -EFAULT; |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 826 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | |
| 828 | case CAPI_GET_MANUFACTURER: |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 829 | if (copy_from_user(&data.contr, argp, |
| 830 | sizeof(data.contr))) |
| 831 | return -EFAULT; |
| 832 | cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); |
| 833 | if (cdev->errcode) |
| 834 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 836 | if (copy_to_user(argp, data.manufacturer, |
| 837 | sizeof(data.manufacturer))) |
| 838 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 840 | return 0; |
| 841 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | case CAPI_GET_ERRCODE: |
| 843 | data.errcode = cdev->errcode; |
| 844 | cdev->errcode = CAPI_NOERROR; |
| 845 | if (arg) { |
| 846 | if (copy_to_user(argp, &data.errcode, |
| 847 | sizeof(data.errcode))) |
| 848 | return -EFAULT; |
| 849 | } |
| 850 | return data.errcode; |
| 851 | |
| 852 | case CAPI_INSTALLED: |
| 853 | if (capi20_isinstalled() == CAPI_NOERROR) |
| 854 | return 0; |
| 855 | return -ENXIO; |
| 856 | |
Tilman Schmidt | 7fdaadc | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 857 | case CAPI_MANUFACTURER_CMD: { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 858 | struct capi_manufacturer_cmd mcmd; |
| 859 | if (!capable(CAP_SYS_ADMIN)) |
| 860 | return -EPERM; |
| 861 | if (copy_from_user(&mcmd, argp, sizeof(mcmd))) |
| 862 | return -EFAULT; |
| 863 | return capi20_manufacturer(mcmd.cmd, mcmd.data); |
| 864 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | case CAPI_SET_FLAGS: |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 866 | case CAPI_CLR_FLAGS: { |
| 867 | unsigned userflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 869 | if (copy_from_user(&userflags, argp, sizeof(userflags))) |
| 870 | return -EFAULT; |
| 871 | |
| 872 | mutex_lock(&cdev->lock); |
| 873 | if (cmd == CAPI_SET_FLAGS) |
| 874 | cdev->userflags |= userflags; |
| 875 | else |
| 876 | cdev->userflags &= ~userflags; |
| 877 | mutex_unlock(&cdev->lock); |
| 878 | return 0; |
| 879 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | case CAPI_GET_FLAGS: |
| 881 | if (copy_to_user(argp, &cdev->userflags, |
| 882 | sizeof(cdev->userflags))) |
| 883 | return -EFAULT; |
| 884 | return 0; |
| 885 | |
Tilman Schmidt | 7dc2ce5 | 2012-04-25 13:02:20 +0000 | [diff] [blame] | 886 | #ifndef CONFIG_ISDN_CAPI_MIDDLEWARE |
| 887 | case CAPI_NCCI_OPENCOUNT: |
| 888 | return 0; |
| 889 | |
| 890 | #else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 891 | case CAPI_NCCI_OPENCOUNT: { |
| 892 | struct capincci *nccip; |
| 893 | unsigned ncci; |
| 894 | int count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 896 | if (copy_from_user(&ncci, argp, sizeof(ncci))) |
| 897 | return -EFAULT; |
| 898 | |
| 899 | mutex_lock(&cdev->lock); |
| 900 | nccip = capincci_find(cdev, (u32)ncci); |
| 901 | if (nccip) |
| 902 | count = capincci_minor_opencount(nccip); |
| 903 | mutex_unlock(&cdev->lock); |
| 904 | return count; |
| 905 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 907 | case CAPI_NCCI_GETUNIT: { |
| 908 | struct capincci *nccip; |
| 909 | struct capiminor *mp; |
| 910 | unsigned ncci; |
| 911 | int unit = -ESRCH; |
| 912 | |
| 913 | if (copy_from_user(&ncci, argp, sizeof(ncci))) |
| 914 | return -EFAULT; |
| 915 | |
| 916 | mutex_lock(&cdev->lock); |
| 917 | nccip = capincci_find(cdev, (u32)ncci); |
| 918 | if (nccip) { |
| 919 | mp = nccip->minorp; |
| 920 | if (mp) |
| 921 | unit = mp->minor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 923 | mutex_unlock(&cdev->lock); |
| 924 | return unit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | } |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 926 | #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 927 | |
| 928 | default: |
| 929 | return -EINVAL; |
| 930 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | } |
| 932 | |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 933 | static long |
| 934 | capi_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 935 | { |
| 936 | int ret; |
| 937 | |
Arnd Bergmann | 76a6492 | 2010-07-11 11:18:53 +0000 | [diff] [blame] | 938 | mutex_lock(&capi_mutex); |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 939 | ret = capi_ioctl(file, cmd, arg); |
Arnd Bergmann | 76a6492 | 2010-07-11 11:18:53 +0000 | [diff] [blame] | 940 | mutex_unlock(&capi_mutex); |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 941 | |
| 942 | return ret; |
| 943 | } |
| 944 | |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 945 | static int capi_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | { |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 947 | struct capidev *cdev; |
| 948 | |
| 949 | cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); |
| 950 | if (!cdev) |
| 951 | return -ENOMEM; |
| 952 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 953 | mutex_init(&cdev->lock); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 954 | skb_queue_head_init(&cdev->recvqueue); |
| 955 | init_waitqueue_head(&cdev->recvwait); |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 956 | INIT_LIST_HEAD(&cdev->nccis); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 957 | file->private_data = cdev; |
| 958 | |
| 959 | mutex_lock(&capidev_list_lock); |
| 960 | list_add_tail(&cdev->list, &capidev_list); |
| 961 | mutex_unlock(&capidev_list_lock); |
| 962 | |
Kirill Smelkov | c5bf68f | 2019-03-26 23:51:19 +0300 | [diff] [blame] | 963 | return stream_open(inode, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | } |
| 965 | |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 966 | static int capi_release(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | { |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 968 | struct capidev *cdev = file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 970 | mutex_lock(&capidev_list_lock); |
| 971 | list_del(&cdev->list); |
| 972 | mutex_unlock(&capidev_list_lock); |
| 973 | |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 974 | if (cdev->ap.applid) |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 975 | capi20_release(&cdev->ap); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 976 | skb_queue_purge(&cdev->recvqueue); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 977 | capincci_free(cdev, 0xffffffff); |
Jan Kiszka | eca39dd | 2010-02-08 10:12:18 +0000 | [diff] [blame] | 978 | |
| 979 | kfree(cdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | return 0; |
| 981 | } |
| 982 | |
Arjan van de Ven | 2b8693c | 2007-02-12 00:55:32 -0800 | [diff] [blame] | 983 | static const struct file_operations capi_fops = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | { |
| 985 | .owner = THIS_MODULE, |
| 986 | .llseek = no_llseek, |
| 987 | .read = capi_read, |
| 988 | .write = capi_write, |
| 989 | .poll = capi_poll, |
Arnd Bergmann | 703c631 | 2010-04-27 00:24:02 +0200 | [diff] [blame] | 990 | .unlocked_ioctl = capi_unlocked_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | .open = capi_open, |
| 992 | .release = capi_release, |
| 993 | }; |
| 994 | |
| 995 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
| 996 | /* -------- tty_operations for capincci ----------------------------- */ |
| 997 | |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 998 | static int |
| 999 | capinc_tty_install(struct tty_driver *driver, struct tty_struct *tty) |
| 1000 | { |
Jiri Slaby | 410235f | 2012-03-05 14:52:01 +0100 | [diff] [blame] | 1001 | struct capiminor *mp = capiminor_get(tty->index); |
Jiri Slaby | 81f5835 | 2012-01-30 21:14:30 +0100 | [diff] [blame] | 1002 | int ret = tty_standard_install(driver, tty); |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1003 | |
Jiri Slaby | 81f5835 | 2012-01-30 21:14:30 +0100 | [diff] [blame] | 1004 | if (ret == 0) |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1005 | tty->driver_data = mp; |
Jiri Slaby | 81f5835 | 2012-01-30 21:14:30 +0100 | [diff] [blame] | 1006 | else |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1007 | capiminor_put(mp); |
| 1008 | return ret; |
| 1009 | } |
| 1010 | |
| 1011 | static void capinc_tty_cleanup(struct tty_struct *tty) |
| 1012 | { |
| 1013 | struct capiminor *mp = tty->driver_data; |
| 1014 | tty->driver_data = NULL; |
| 1015 | capiminor_put(mp); |
| 1016 | } |
| 1017 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1018 | static int capinc_tty_open(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | { |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1020 | struct capiminor *mp = tty->driver_data; |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1021 | int err; |
| 1022 | |
| 1023 | err = tty_port_open(&mp->port, tty, filp); |
| 1024 | if (err) |
| 1025 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | handle_minor_recv(mp); |
| 1028 | return 0; |
| 1029 | } |
| 1030 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1031 | static void capinc_tty_close(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | { |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1033 | struct capiminor *mp = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1035 | tty_port_close(&mp->port, tty, filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | } |
| 1037 | |
Jan Kiszka | 6576c28 | 2010-02-08 10:12:32 +0000 | [diff] [blame] | 1038 | static int capinc_tty_write(struct tty_struct *tty, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | const unsigned char *buf, int count) |
| 1040 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1041 | struct capiminor *mp = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | struct sk_buff *skb; |
| 1043 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1044 | pr_debug("capinc_tty_write(count=%d)\n", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1046 | spin_lock_bh(&mp->outlock); |
| 1047 | skb = mp->outskb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | if (skb) { |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1049 | mp->outskb = NULL; |
| 1050 | __skb_queue_tail(&mp->outqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | mp->outbytes += skb->len; |
| 1052 | } |
| 1053 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1054 | skb = alloc_skb(CAPI_DATA_B3_REQ_LEN + count, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | if (!skb) { |
| 1056 | printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1057 | spin_unlock_bh(&mp->outlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | return -ENOMEM; |
| 1059 | } |
| 1060 | |
| 1061 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); |
Johannes Berg | 59ae1d1 | 2017-06-16 14:29:20 +0200 | [diff] [blame] | 1062 | skb_put_data(skb, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1064 | __skb_queue_tail(&mp->outqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | mp->outbytes += skb->len; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1066 | spin_unlock_bh(&mp->outlock); |
| 1067 | |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 1068 | handle_minor_send(mp); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1069 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | return count; |
| 1071 | } |
| 1072 | |
Alan Cox | f2545a7 | 2008-04-30 00:54:09 -0700 | [diff] [blame] | 1073 | 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] | 1074 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1075 | struct capiminor *mp = tty->driver_data; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1076 | bool invoke_send = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | struct sk_buff *skb; |
Alan Cox | f2545a7 | 2008-04-30 00:54:09 -0700 | [diff] [blame] | 1078 | int ret = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1080 | pr_debug("capinc_put_char(%u)\n", ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1082 | spin_lock_bh(&mp->outlock); |
| 1083 | skb = mp->outskb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | if (skb) { |
| 1085 | if (skb_tailroom(skb) > 0) { |
Johannes Berg | 634fef6 | 2017-06-16 14:29:24 +0200 | [diff] [blame] | 1086 | skb_put_u8(skb, ch); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1087 | goto unlock_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | } |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1089 | mp->outskb = NULL; |
| 1090 | __skb_queue_tail(&mp->outqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | mp->outbytes += skb->len; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1092 | invoke_send = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | } |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1094 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1095 | 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] | 1096 | if (skb) { |
| 1097 | skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); |
Johannes Berg | 634fef6 | 2017-06-16 14:29:24 +0200 | [diff] [blame] | 1098 | skb_put_u8(skb, ch); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1099 | mp->outskb = skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | } else { |
| 1101 | printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); |
Alan Cox | f2545a7 | 2008-04-30 00:54:09 -0700 | [diff] [blame] | 1102 | ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | } |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1104 | |
| 1105 | unlock_out: |
| 1106 | spin_unlock_bh(&mp->outlock); |
| 1107 | |
| 1108 | if (invoke_send) |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 1109 | handle_minor_send(mp); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1110 | |
Alan Cox | f2545a7 | 2008-04-30 00:54:09 -0700 | [diff] [blame] | 1111 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | } |
| 1113 | |
| 1114 | static void capinc_tty_flush_chars(struct tty_struct *tty) |
| 1115 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1116 | struct capiminor *mp = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | struct sk_buff *skb; |
| 1118 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1119 | pr_debug("capinc_tty_flush_chars\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1121 | spin_lock_bh(&mp->outlock); |
| 1122 | skb = mp->outskb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | if (skb) { |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1124 | mp->outskb = NULL; |
| 1125 | __skb_queue_tail(&mp->outqueue, skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | mp->outbytes += skb->len; |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1127 | spin_unlock_bh(&mp->outlock); |
| 1128 | |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 1129 | handle_minor_send(mp); |
Jan Kiszka | dfbb84f | 2010-02-08 10:12:40 +0000 | [diff] [blame] | 1130 | } else |
| 1131 | spin_unlock_bh(&mp->outlock); |
| 1132 | |
| 1133 | handle_minor_recv(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | } |
| 1135 | |
| 1136 | static int capinc_tty_write_room(struct tty_struct *tty) |
| 1137 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1138 | struct capiminor *mp = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | int room; |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); |
| 1142 | room *= CAPI_MAX_BLKSIZE; |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1143 | pr_debug("capinc_tty_write_room = %d\n", room); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | return room; |
| 1145 | } |
| 1146 | |
Adrian Bunk | 408b664 | 2005-05-01 08:59:29 -0700 | [diff] [blame] | 1147 | static int capinc_tty_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1149 | struct capiminor *mp = tty->driver_data; |
| 1150 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1151 | pr_debug("capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", |
| 1152 | mp->outbytes, mp->nack, |
| 1153 | skb_queue_len(&mp->outqueue), |
| 1154 | skb_queue_len(&mp->inqueue)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | return mp->outbytes; |
| 1156 | } |
| 1157 | |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1158 | 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] | 1159 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1160 | pr_debug("capinc_tty_set_termios\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | } |
| 1162 | |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1163 | static void capinc_tty_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1165 | struct capiminor *mp = tty->driver_data; |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1166 | pr_debug("capinc_tty_throttle\n"); |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1167 | mp->ttyinstop = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | } |
| 1169 | |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1170 | static void capinc_tty_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1172 | struct capiminor *mp = tty->driver_data; |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1173 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1174 | pr_debug("capinc_tty_unthrottle\n"); |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1175 | mp->ttyinstop = 0; |
| 1176 | handle_minor_recv(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | } |
| 1178 | |
| 1179 | static void capinc_tty_stop(struct tty_struct *tty) |
| 1180 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1181 | struct capiminor *mp = tty->driver_data; |
| 1182 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1183 | pr_debug("capinc_tty_stop\n"); |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1184 | mp->ttyoutstop = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | } |
| 1186 | |
| 1187 | static void capinc_tty_start(struct tty_struct *tty) |
| 1188 | { |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1189 | struct capiminor *mp = tty->driver_data; |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1190 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1191 | pr_debug("capinc_tty_start\n"); |
Jan Kiszka | 2c8df72 | 2010-02-08 10:12:30 +0000 | [diff] [blame] | 1192 | mp->ttyoutstop = 0; |
Jan Kiszka | eef0ced | 2010-02-08 10:12:42 +0000 | [diff] [blame] | 1193 | handle_minor_send(mp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | } |
| 1195 | |
| 1196 | static void capinc_tty_hangup(struct tty_struct *tty) |
| 1197 | { |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1198 | struct capiminor *mp = tty->driver_data; |
| 1199 | |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1200 | pr_debug("capinc_tty_hangup\n"); |
Jan Kiszka | fb4b488 | 2010-02-08 10:12:29 +0000 | [diff] [blame] | 1201 | tty_port_hangup(&mp->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | } |
| 1203 | |
Alan Cox | 9e98966c | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 1204 | static int capinc_tty_break_ctl(struct tty_struct *tty, int state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1206 | pr_debug("capinc_tty_break_ctl(%d)\n", state); |
Alan Cox | 9e98966c | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 1207 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | } |
| 1209 | |
| 1210 | static void capinc_tty_flush_buffer(struct tty_struct *tty) |
| 1211 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1212 | pr_debug("capinc_tty_flush_buffer\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | } |
| 1214 | |
| 1215 | static void capinc_tty_set_ldisc(struct tty_struct *tty) |
| 1216 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1217 | pr_debug("capinc_tty_set_ldisc\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | } |
| 1219 | |
| 1220 | static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) |
| 1221 | { |
David S. Miller | 8fb53b9 | 2011-05-19 18:20:29 -0400 | [diff] [blame] | 1222 | pr_debug("capinc_tty_send_xchar(%d)\n", ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | } |
| 1224 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 1225 | static const struct tty_operations capinc_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | .open = capinc_tty_open, |
| 1227 | .close = capinc_tty_close, |
| 1228 | .write = capinc_tty_write, |
| 1229 | .put_char = capinc_tty_put_char, |
| 1230 | .flush_chars = capinc_tty_flush_chars, |
| 1231 | .write_room = capinc_tty_write_room, |
| 1232 | .chars_in_buffer = capinc_tty_chars_in_buffer, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | .set_termios = capinc_tty_set_termios, |
| 1234 | .throttle = capinc_tty_throttle, |
| 1235 | .unthrottle = capinc_tty_unthrottle, |
| 1236 | .stop = capinc_tty_stop, |
| 1237 | .start = capinc_tty_start, |
| 1238 | .hangup = capinc_tty_hangup, |
| 1239 | .break_ctl = capinc_tty_break_ctl, |
| 1240 | .flush_buffer = capinc_tty_flush_buffer, |
| 1241 | .set_ldisc = capinc_tty_set_ldisc, |
| 1242 | .send_xchar = capinc_tty_send_xchar, |
Jan Kiszka | 4632451 | 2010-02-08 10:12:28 +0000 | [diff] [blame] | 1243 | .install = capinc_tty_install, |
| 1244 | .cleanup = capinc_tty_cleanup, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | }; |
| 1246 | |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1247 | static int __init capinc_tty_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | { |
| 1249 | struct tty_driver *drv; |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1250 | int err; |
| 1251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | if (capi_ttyminors > CAPINC_MAX_PORTS) |
| 1253 | capi_ttyminors = CAPINC_MAX_PORTS; |
| 1254 | if (capi_ttyminors <= 0) |
| 1255 | capi_ttyminors = CAPINC_NR_PORTS; |
| 1256 | |
Kees Cook | 6396bb2 | 2018-06-12 14:03:40 -0700 | [diff] [blame] | 1257 | capiminors = kcalloc(capi_ttyminors, sizeof(struct capiminor *), |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 1258 | GFP_KERNEL); |
| 1259 | if (!capiminors) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | return -ENOMEM; |
| 1261 | |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 1262 | drv = alloc_tty_driver(capi_ttyminors); |
| 1263 | if (!drv) { |
| 1264 | kfree(capiminors); |
| 1265 | return -ENOMEM; |
| 1266 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | drv->driver_name = "capi_nc"; |
Paul Bolle | d1cadce | 2014-06-01 23:47:24 +0200 | [diff] [blame] | 1268 | drv->name = "capi!"; |
Jan Kiszka | e95ac14 | 2010-02-08 10:12:26 +0000 | [diff] [blame] | 1269 | drv->major = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | drv->minor_start = 0; |
| 1271 | drv->type = TTY_DRIVER_TYPE_SERIAL; |
| 1272 | drv->subtype = SERIAL_TYPE_NORMAL; |
| 1273 | drv->init_termios = tty_std_termios; |
| 1274 | drv->init_termios.c_iflag = ICRNL; |
| 1275 | drv->init_termios.c_oflag = OPOST | ONLCR; |
| 1276 | drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
| 1277 | drv->init_termios.c_lflag = 0; |
Jan Kiszka | 40fb2d0 | 2010-02-08 10:12:25 +0000 | [diff] [blame] | 1278 | drv->flags = |
| 1279 | TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS | |
| 1280 | TTY_DRIVER_DYNAMIC_DEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | tty_set_operations(drv, &capinc_ops); |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1282 | |
| 1283 | err = tty_register_driver(drv); |
| 1284 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | put_tty_driver(drv); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 1286 | kfree(capiminors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | printk(KERN_ERR "Couldn't register capi_nc driver\n"); |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1288 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | } |
| 1290 | capinc_tty_driver = drv; |
| 1291 | return 0; |
| 1292 | } |
| 1293 | |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1294 | static void __exit capinc_tty_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | { |
Jan Kiszka | e76b154 | 2010-02-08 10:12:24 +0000 | [diff] [blame] | 1296 | tty_unregister_driver(capinc_tty_driver); |
| 1297 | put_tty_driver(capinc_tty_driver); |
Jan Kiszka | 81d17fe | 2010-02-08 10:12:23 +0000 | [diff] [blame] | 1298 | kfree(capiminors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | } |
| 1300 | |
Jan Kiszka | 501c87a | 2010-02-08 10:12:16 +0000 | [diff] [blame] | 1301 | #else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
| 1302 | |
| 1303 | static inline int capinc_tty_init(void) |
| 1304 | { |
| 1305 | return 0; |
| 1306 | } |
| 1307 | |
| 1308 | static inline void capinc_tty_exit(void) { } |
| 1309 | |
| 1310 | #endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | |
| 1312 | /* -------- /proc functions ----------------------------------------- */ |
| 1313 | |
| 1314 | /* |
| 1315 | * /proc/capi/capi20: |
| 1316 | * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt |
| 1317 | */ |
Randy Dunlap | 20fbdc3 | 2018-07-07 08:31:15 -0700 | [diff] [blame] | 1318 | static int __maybe_unused capi20_proc_show(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | { |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1320 | struct capidev *cdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | struct list_head *l; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | |
Jan Kiszka | b8f433d | 2010-02-08 10:12:17 +0000 | [diff] [blame] | 1323 | mutex_lock(&capidev_list_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | list_for_each(l, &capidev_list) { |
| 1325 | cdev = list_entry(l, struct capidev, list); |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1326 | seq_printf(m, "0 %d %lu %lu %lu %lu\n", |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1327 | cdev->ap.applid, |
| 1328 | cdev->ap.nrecvctlpkt, |
| 1329 | cdev->ap.nrecvdatapkt, |
| 1330 | cdev->ap.nsentctlpkt, |
| 1331 | cdev->ap.nsentdatapkt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | } |
Jan Kiszka | b8f433d | 2010-02-08 10:12:17 +0000 | [diff] [blame] | 1333 | mutex_unlock(&capidev_list_lock); |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1334 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | } |
| 1336 | |
| 1337 | /* |
| 1338 | * /proc/capi/capi20ncci: |
| 1339 | * applid ncci |
| 1340 | */ |
Randy Dunlap | 20fbdc3 | 2018-07-07 08:31:15 -0700 | [diff] [blame] | 1341 | static int __maybe_unused capi20ncci_proc_show(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | { |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 1343 | struct capidev *cdev; |
| 1344 | struct capincci *np; |
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_lock(&capidev_list_lock); |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 1347 | list_for_each_entry(cdev, &capidev_list, list) { |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 1348 | mutex_lock(&cdev->lock); |
Jan Kiszka | 884f5c4 | 2010-02-08 10:12:22 +0000 | [diff] [blame] | 1349 | list_for_each_entry(np, &cdev->nccis, list) |
| 1350 | seq_printf(m, "%d 0x%x\n", cdev->ap.applid, np->ncci); |
Jan Kiszka | 05b4149 | 2010-02-08 10:12:19 +0000 | [diff] [blame] | 1351 | mutex_unlock(&cdev->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | } |
Jan Kiszka | b8f433d | 2010-02-08 10:12:17 +0000 | [diff] [blame] | 1353 | mutex_unlock(&capidev_list_lock); |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1354 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | } |
| 1356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | static void __init proc_init(void) |
| 1358 | { |
Christoph Hellwig | 3f3942a | 2018-05-15 15:57:23 +0200 | [diff] [blame] | 1359 | proc_create_single("capi/capi20", 0, NULL, capi20_proc_show); |
| 1360 | proc_create_single("capi/capi20ncci", 0, NULL, capi20ncci_proc_show); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | } |
| 1362 | |
| 1363 | static void __exit proc_exit(void) |
| 1364 | { |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 1365 | remove_proc_entry("capi/capi20", NULL); |
| 1366 | remove_proc_entry("capi/capi20ncci", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | } |
| 1368 | |
| 1369 | /* -------- init function and module interface ---------------------- */ |
| 1370 | |
| 1371 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | static int __init capi_init(void) |
| 1373 | { |
Jan Kiszka | 88549d6 | 2010-02-08 10:12:09 +0000 | [diff] [blame] | 1374 | const char *compileinfo; |
Andrew Morton | 6d9eac3 | 2006-03-28 01:56:19 -0800 | [diff] [blame] | 1375 | int major_ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | |
Andrew Morton | 6d9eac3 | 2006-03-28 01:56:19 -0800 | [diff] [blame] | 1377 | major_ret = register_chrdev(capi_major, "capi20", &capi_fops); |
| 1378 | if (major_ret < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); |
Andrew Morton | 6d9eac3 | 2006-03-28 01:56:19 -0800 | [diff] [blame] | 1380 | return major_ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | } |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 1382 | capi_class = class_create(THIS_MODULE, "capi"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | if (IS_ERR(capi_class)) { |
| 1384 | unregister_chrdev(capi_major, "capi20"); |
| 1385 | return PTR_ERR(capi_class); |
| 1386 | } |
| 1387 | |
Paul Bolle | d1cadce | 2014-06-01 23:47:24 +0200 | [diff] [blame] | 1388 | device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi20"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | if (capinc_tty_init() < 0) { |
Tony Jones | d78b036 | 2007-09-25 02:03:03 +0200 | [diff] [blame] | 1391 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 1392 | class_destroy(capi_class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | unregister_chrdev(capi_major, "capi20"); |
| 1394 | return -ENOMEM; |
| 1395 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | |
| 1397 | proc_init(); |
| 1398 | |
Jan Kiszka | 1f90d66 | 2011-04-06 10:58:37 +0000 | [diff] [blame] | 1399 | #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1400 | compileinfo = " (middleware)"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | #else |
Joe Perches | 475be4d | 2012-02-19 19:52:38 -0800 | [diff] [blame] | 1402 | compileinfo = " (no middleware)"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | #endif |
Jan Kiszka | 88549d6 | 2010-02-08 10:12:09 +0000 | [diff] [blame] | 1404 | printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n", |
| 1405 | capi_major, compileinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | |
| 1407 | return 0; |
| 1408 | } |
| 1409 | |
| 1410 | static void __exit capi_exit(void) |
| 1411 | { |
| 1412 | proc_exit(); |
| 1413 | |
Tony Jones | d78b036 | 2007-09-25 02:03:03 +0200 | [diff] [blame] | 1414 | device_destroy(capi_class, MKDEV(capi_major, 0)); |
gregkh@suse.de | 56b2293 | 2005-03-23 10:01:41 -0800 | [diff] [blame] | 1415 | class_destroy(capi_class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | unregister_chrdev(capi_major, "capi20"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | capinc_tty_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | } |
| 1420 | |
| 1421 | module_init(capi_init); |
| 1422 | module_exit(capi_exit); |