1 #ifndef _LINUX_TIMER_H 2 #define _LINUX_TIMER_H 3 4 /* 5 * DON'T CHANGE THESE!! Most of them are hardcoded into some assembly language 6 * as well as being defined here. 7 */ 8 9 /* 10 * The timers are: 11 * 12 * BLANK_TIMER console screen-saver timer 13 * 14 * BEEP_TIMER console beep timer 15 * 16 * RS_TIMER timer for the RS-232 ports 17 * 18 * HD_TIMER harddisk timer 19 * 20 * FLOPPY_TIMER floppy disk timer (not used right now) 21 * 22 * SCSI_TIMER scsi.c timeout timer 23 * 24 * NET_TIMER tcp/ip timeout timer 25 * 26 * COPRO_TIMER 387 timeout for buggy hardware.. 27 * 28 * TAPE_QIC02_TIMER timer for QIC-02 tape driver (it's not hardcoded) 29 * 30 * MCD_TIMER Mitsumi CD-ROM Timer 31 */ 32 33 #define BLANK_TIMER 0 34 #define BEEP_TIMER 1 35 #define RS_TIMER 2 36 37 #define HD_TIMER 16 38 #define FLOPPY_TIMER 17 39 #define SCSI_TIMER 18 40 #define NET_TIMER 19 41 #define SOUND_TIMER 20 42 #define COPRO_TIMER 21 43 44 #define TAPE_QIC02_TIMER 22 /* hhb */ 45 #define MCD_TIMER 23 46 47 struct timer_struct { 48 unsigned long expires; 49 void (*fn)(void); 50 }; 51 52 extern unsigned long timer_active; 53 extern struct timer_struct timer_table[32]; 54 55 /* 56 * This is completely separate from the above, and is the 57 * "new and improved" way of handling timers more dynamically. 58 * Hopefully efficient and general enough for most things. 59 * 60 * The "hardcoded" timers above are still useful for well- 61 * defined problems, but the timer-list is probably better 62 * when you need multiple outstanding timers or similar. 63 * 64 * The "data" field is in case you want to use the same 65 * timeout function for several timeouts. You can use this 66 * to distinguish between the different invocations. 67 */ 68 struct timer_list { 69 struct timer_list *next; 70 unsigned long expires; 71 unsigned long data; 72 void (*function)(unsigned long); 73 }; 74 75 extern void add_timer(struct timer_list * timer); 76 extern int del_timer(struct timer_list * timer); 77 78 #endif