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Merge branch 'xl0-timer'

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This commit is contained in:
Michael Brown
2008-03-10 13:02:53 +00:00
parent 1dd3f88964 8de54ef9aa
commit 3e781eb87f
70 changed files with 412 additions and 398 deletions
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2
src/include/etherboot.h
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@@ -12,8 +12,8 @@
#include <stdio.h>
#include <unistd.h>
#include <strings.h>
#include <latch.h>
#include <console.h>
#include <gpxe/timer.h>
#include <gpxe/if_arp.h>
#include <gpxe/if_ether.h>

1
src/include/gpxe/dhcp.h
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@@ -12,7 +12,6 @@
#include <gpxe/in.h>
#include <gpxe/refcnt.h>
#include <gpxe/tables.h>
#include <latch.h>
struct net_device;
struct job_interface;

1
src/include/gpxe/tcp.h
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@@ -9,7 +9,6 @@
*
*/
#include "latch.h"
#include <gpxe/tcpip.h>
/**

32
src/include/gpxe/timer.h Normal file
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@@ -0,0 +1,32 @@
#ifndef GPXE_TIMER_H
#define GPXE_TIMER_H
#include <stddef.h>
typedef uint32_t tick_t;
#define MSECS_IN_SEC (1000)
#define USECS_IN_SEC (1000*1000)
#define USECS_IN_MSEC (1000)
#define TICKS_PER_SEC USECS_IN_SEC
tick_t currticks(void);
void generic_currticks_udelay(unsigned int usecs);
struct timer {
/* Returns zero on successful initialisation. */
int (*init) (void);
/* Return the current time, int mictoseconds since the beginning. */
tick_t (*currticks) (void);
/* Sleep for a few useconds. */
void (*udelay) (unsigned int useconds);
};
#define __timer(order) __table (struct timer, timers, order)
#endif /* GPXE_TIMER_H */

61
src/include/timer.h
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@@ -1,61 +0,0 @@
/* Defines for routines to implement a low-overhead timer for drivers */
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*/
#ifndef TIMER_H
#define TIMER_H
/* Ports for the 8254 timer chip */
#define TIMER2_PORT 0x42
#define TIMER_MODE_PORT 0x43
/* Meaning of the mode bits */
#define TIMER0_SEL 0x00
#define TIMER1_SEL 0x40
#define TIMER2_SEL 0x80
#define READBACK_SEL 0xC0
#define LATCH_COUNT 0x00
#define LOBYTE_ACCESS 0x10
#define HIBYTE_ACCESS 0x20
#define WORD_ACCESS 0x30
#define MODE0 0x00
#define MODE1 0x02
#define MODE2 0x04
#define MODE3 0x06
#define MODE4 0x08
#define MODE5 0x0A
#define BINARY_COUNT 0x00
#define BCD_COUNT 0x01
/* Timers tick over at this rate */
#define CLOCK_TICK_RATE 1193180U
#define TICKS_PER_MS (CLOCK_TICK_RATE/1000)
/* Parallel Peripheral Controller Port B */
#define PPC_PORTB 0x61
/* Meaning of the port bits */
#define PPCB_T2OUT 0x20 /* Bit 5 */
#define PPCB_SPKR 0x02 /* Bit 1 */
#define PPCB_T2GATE 0x01 /* Bit 0 */
/* Ticks must be between 0 and 65535 (0 == 65536)
because it is a 16 bit counter */
extern void load_timer2(unsigned int ticks);
extern inline int timer2_running(void);
extern void waiton_timer2(unsigned int ticks);
extern void ndelay(unsigned int nsecs);
extern void udelay(unsigned int usecs);
extern void mdelay(unsigned int msecs);
#endif /* TIMER_H */

8
src/include/unistd.h
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@@ -4,7 +4,7 @@
#include <stddef.h>
#include <stdarg.h>
extern unsigned int sleep ( unsigned int seconds );
unsigned int sleep ( unsigned int seconds );
extern int execv ( const char *command, char * const argv[] );
/**
@@ -22,4 +22,10 @@ extern int execv ( const char *command, char * const argv[] );
rc; \
} )
void udelay(unsigned int usecs);
void mdelay(unsigned int msecs);
#define usleep(x) udelay(x)
#endif /* _UNISTD_H */