1 /* r3964 linediscipline for linux 2 * 3 * ----------------------------------------------------------- 4 * Copyright by 5 * Philips Automation Projects 6 * Kassel (Germany) 7 * ----------------------------------------------------------- 8 * This software may be used and distributed according to the terms of 9 * the GNU General Public License, incorporated herein by reference. 10 * 11 * Author: 12 * L. Haag 13 * 14 * $Log: r3964.h,v $ 15 * Revision 1.4 2005/12/21 19:54:24 Kurt Huwig <kurt huwig de> 16 * Fixed HZ usage on 2.6 kernels 17 * Removed unnecessary include 18 * 19 * Revision 1.3 2001/03/18 13:02:24 dwmw2 20 * Fix timer usage, use spinlocks properly. 21 * 22 * Revision 1.2 2001/03/18 12:53:15 dwmw2 23 * Merge changes in 2.4.2 24 * 25 * Revision 1.1.1.1 1998/10/13 16:43:14 dwmw2 26 * This'll screw the version control 27 * 28 * Revision 1.6 1998/09/30 00:40:38 dwmw2 29 * Updated to use kernel's N_R3964 if available 30 * 31 * Revision 1.4 1998/04/02 20:29:44 lhaag 32 * select, blocking, ... 33 * 34 * Revision 1.3 1998/02/12 18:58:43 root 35 * fixed some memory leaks 36 * calculation of checksum characters 37 * 38 * Revision 1.2 1998/02/07 13:03:17 root 39 * ioctl read_telegram 40 * 41 * Revision 1.1 1998/02/06 19:19:43 root 42 * Initial revision 43 * 44 * 45 */ 46 47 #ifndef __LINUX_N_R3964_H__ 48 #define __LINUX_N_R3964_H__ 49 50 /* line disciplines for r3964 protocol */ 51 52 53 /* 54 * Ioctl-commands 55 */ 56 57 #define R3964_ENABLE_SIGNALS 0x5301 58 #define R3964_SETPRIORITY 0x5302 59 #define R3964_USE_BCC 0x5303 60 #define R3964_READ_TELEGRAM 0x5304 61 62 /* Options for R3964_SETPRIORITY */ 63 #define R3964_MASTER 0 64 #define R3964_SLAVE 1 65 66 /* Options for R3964_ENABLE_SIGNALS */ 67 #define R3964_SIG_ACK 0x0001 68 #define R3964_SIG_DATA 0x0002 69 #define R3964_SIG_ALL 0x000f 70 #define R3964_SIG_NONE 0x0000 71 #define R3964_USE_SIGIO 0x1000 72 73 /* 74 * r3964 operation states: 75 */ 76 77 /* types for msg_id: */ 78 enum {R3964_MSG_ACK=1, R3964_MSG_DATA }; 79 80 #define R3964_MAX_MSG_COUNT 32 81 82 /* error codes for client messages */ 83 #define R3964_OK 0 /* no error. */ 84 #define R3964_TX_FAIL -1 /* transmission error, block NOT sent */ 85 #define R3964_OVERFLOW -2 /* msg queue overflow */ 86 87 /* the client gets this struct when calling read(fd,...): */ 88 struct r3964_client_message { 89 int msg_id; 90 int arg; 91 int error_code; 92 }; 93 94 #define R3964_MTU 256 95 96 97 98 #endif 99
