Subversion Repositories HelenOS-historic

Rev

Rev 576 | Rev 1702 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 576 Rev 958
Line 51... Line 51...
51 
 
 51 
 
52 
 
 52 
 
53 
#define CLK_CONST   1193180
 53 
#define CLK_CONST   1193180
54 
#define MAGIC_NUMBER    1194
 54 
#define MAGIC_NUMBER    1194
55 
 
 55 
 
56 
static void i8254_interrupt(int n, void *stack);
 56 
static void i8254_interrupt(int n, istate_t *istate);
57 
 
 57 
 
58 
void i8254_init(void)
 58 
void i8254_init(void)
59 
{
 59 
{
60 
    i8254_normal_operation();
 60 
    i8254_normal_operation();
61 
}
 61 
}
Line 65... Line 65...
65 
    outb(CLK_PORT4, 0x36);
 65 
    outb(CLK_PORT4, 0x36);
66 
    pic_disable_irqs(1<<IRQ_CLK);
 66 
    pic_disable_irqs(1<<IRQ_CLK);
67 
    outb(CLK_PORT1, (CLK_CONST/HZ) & 0xf);
 67 
    outb(CLK_PORT1, (CLK_CONST/HZ) & 0xf);
68 
    outb(CLK_PORT1, (CLK_CONST/HZ) >> 8);
 68 
    outb(CLK_PORT1, (CLK_CONST/HZ) >> 8);
69 
    pic_enable_irqs(1<<IRQ_CLK);
 69 
    pic_enable_irqs(1<<IRQ_CLK);
70 
    exc_register(VECTOR_CLK, "i8254_clock", i8254_interrupt);
 70 
    exc_register(VECTOR_CLK, "i8254_clock", (iroutine) i8254_interrupt);
71 
}
 71 
}
72 
 
 72 
 
73 
#define LOOPS 150000
 73 
#define LOOPS 150000
74 
#define SHIFT 11
 74 
#define SHIFT 11
75 
void i8254_calibrate_delay_loop(void)
 75 
void i8254_calibrate_delay_loop(void)
Line 123... Line 123...
123 
    CPU->frequency_mhz = (clk2-clk1)>>SHIFT;
 123 
    CPU->frequency_mhz = (clk2-clk1)>>SHIFT;
124 
 
 124 
 
125 
    return;
 125 
    return;
126 
}
 126 
}
127 
 
 127 
 
128 
void i8254_interrupt(int n, void *stack)
 128 
void i8254_interrupt(int n, istate_t *istate)
129 
{
 129 
{
130 
    trap_virtual_eoi();
 130 
    trap_virtual_eoi();
131 
    clock();
 131 
    clock();
132 
}
 132 
}