Dear Linux-enthusiasts, I'm still at the same problem.
I have now implemented a irq_chip for the hardwired IRQ2. Now I have:
--==>
volatile static struct mpc52xx_intr __iomem *intr;
unsigned long flags;
static DEFINE_SPINLOCK(my_irq_controller_lock);
/*
* HELPER-Function
*/
static inline void io_be_setbit(u32 __iomem *addr, int bitno)
{
out_be32(addr, in_be32(addr) | (1 << bitno));
}
static inline void io_be_clrbit(u32 __iomem *addr, int bitno)
{
out_be32(addr, in_be32(addr) & ~(1 << bitno));
}
/*
* IRQ-Zeugs
*/
static void my_irq_ack(unsigned int irq)
{
printk("%s(%s/%d):\n", __FILE__, __FUNCTION__, __LINE__);
spin_lock_irqsave(&my_irq_controller_lock, flags);
if(intr)
io_be_setbit(&intr->ctrl, 25);
spin_unlock_irqrestore(&my_irq_controller_lock, flags);
printk("%s(%s/%d):\n", __FILE__, __FUNCTION__, __LINE__);
}
/* irq - disabled */
static void my_irq_mask(unsigned int irq)
{
printk("%s(%s/%d):\n", __FILE__, __FUNCTION__, __LINE__);
spin_lock_irqsave(&my_irq_controller_lock, flags);
if(intr)
io_be_clrbit(&intr->ctrl, 9);
spin_unlock_irqrestore(&my_irq_controller_lock, flags);
printk("%s(%s/%d):\n", __FILE__, __FUNCTION__, __LINE__);
}
/* irq - enable */
static void my_irq_unmask(unsigned int irq)
{
printk("%s(%s/%d):\n", __FILE__, __FUNCTION__, __LINE__);
spin_lock_irqsave(&my_irq_controller_lock, flags);
if(intr)
io_be_setbit(&intr->ctrl, 9);
spin_unlock_irqrestore(&my_irq_controller_lock, flags);
printk("%s(%s/%d):\n", __FILE__, __FUNCTION__, __LINE__);
}
static struct irq_chip my_irq_chip = {
.typename = "MY_IRQ_TEST",
.ack = my_irq_ack,
.mask = my_irq_mask,
.unmask = my_irq_unmask,
};
static int __init mod_init( void )
{
// ...
intr = mpc52xx_find_and_map("mpc52xx-pic");
if(!intr) {
panic(__FILE__ ": mpc52xx-pic - MAP failed");
}
set_irq_chip(MPC52xx_IRQ2, &my_irq_chip);
a = request_irq(2, intmod_isr, IRQF_DISABLED , "intmod", INTMOD_IRQ_BOARD);
printk("a: 0x%08x\n", a);
// ...
}
<==--
Now my code hangs on the my_irq_unmask(...)-function on "io_be_setbit". Why?
Can anyone help me, or point me to the right newsgroup/forum?
So long!
Silvio
--
-- S. Fricke ----------------------------- MAILTO:[EMAIL PROTECTED] --
Diplom-Informatiker (FH)
Linux-Entwicklung JABBER: [EMAIL PROTECTED]
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