Subversion Repositories HelenOS

Rev

Rev 3902 | Rev 3930 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3902 Rev 3906
Line 59... Line 59...
59 
#define CLK_CONST   1193180
 59 
#define CLK_CONST   1193180
60 
#define MAGIC_NUMBER    1194
 60 
#define MAGIC_NUMBER    1194
61 
 
 61 
 
62 
static irq_t i8254_irq;
 62 
static irq_t i8254_irq;
63 
 
 63 
 
64 
static irq_ownership_t i8254_claim(void)
 64 
static irq_ownership_t i8254_claim(void *instance)
65 
{
 65 
{
66 
    return IRQ_ACCEPT;
 66 
    return IRQ_ACCEPT;
67 
}
 67 
}
68 
 
 68 
 
69 
static void i8254_irq_handler(irq_t *irq, void *arg __attribute__((unused)), ...)
 69 
static void i8254_irq_handler(irq_t *irq)
70 
{
 70 
{
71 
    /*
 71 
    /*
72 
     * This IRQ is responsible for kernel preemption.
 72 
     * This IRQ is responsible for kernel preemption.
73 
     * Nevertheless, we are now holding a spinlock which prevents
 73 
     * Nevertheless, we are now holding a spinlock which prevents
74 
     * preemption. For this particular IRQ, we don't need the
 74 
     * preemption. For this particular IRQ, we don't need the