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SPARC/LEON: find IRQCTRL and Timer via OF-Tree, instead of hardcoded. 

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Hellstrom 2011-01-04 01:41:29 +00:00 committed by David S. Miller
parent 5f66dd35b4
commit 53aea7caf2
1 changed files with 38 additions and 6 deletions
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44
arch/sparc/kernel/leon_kernel.c
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@ -23,15 +23,15 @@
#include "prom.h"
#include "irq.h"
struct leon3_irqctrl_regs_map *leon3_irqctrl_regs; /* interrupt controller base address, initialized by amba_init() */
struct leon3_gptimer_regs_map *leon3_gptimer_regs; /* timer controller base address, initialized by amba_init() */
struct leon3_irqctrl_regs_map *leon3_irqctrl_regs; /* interrupt controller base address */
struct leon3_gptimer_regs_map *leon3_gptimer_regs; /* timer controller base address */
struct amba_apb_device leon_percpu_timer_dev[16];
int leondebug_irq_disable;
int leon_debug_irqout;
static int dummy_master_l10_counter;
unsigned long leon3_gptimer_irq; /* interrupt controller irq number, initialized by amba_init() */
unsigned long leon3_gptimer_irq; /* interrupt controller irq number */
unsigned int sparc_leon_eirq;
#define LEON_IMASK ((&leon3_irqctrl_regs->mask[0]))
@ -105,13 +105,41 @@ static void leon_disable_irq(unsigned int irq_nr)
void __init leon_init_timers(irq_handler_t counter_fn)
{
int irq;
struct device_node *rootnp, *np;
struct property *pp;
int len;
leondebug_irq_disable = 0;
leon_debug_irqout = 0;
master_l10_counter = (unsigned int *)&dummy_master_l10_counter;
dummy_master_l10_counter = 0;
if (leon3_gptimer_regs && leon3_irqctrl_regs) {
/*Find IRQMP IRQ Controller Registers base address otherwise bail out.*/
rootnp = of_find_node_by_path("/ambapp0");
if (!rootnp)
goto bad;
np = of_find_node_by_name(rootnp, "GAISLER_IRQMP");
if (!np)
goto bad;
pp = of_find_property(np, "reg", &len);
if (!pp)
goto bad;
leon3_irqctrl_regs = *(struct leon3_irqctrl_regs_map **)pp->value;
/* Find GPTIMER Timer Registers base address otherwise bail out. */
np = of_find_node_by_name(rootnp, "GAISLER_GPTIMER");
if (!np)
goto bad;
pp = of_find_property(np, "reg", &len);
if (!pp)
goto bad;
leon3_gptimer_regs = *(struct leon3_gptimer_regs_map **)pp->value;
pp = of_find_property(np, "interrupts", &len);
if (!pp)
goto bad;
leon3_gptimer_irq = *(unsigned int *)pp->value;
if (leon3_gptimer_regs && leon3_irqctrl_regs && leon3_gptimer_irq) {
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].val, 0);
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[0].rld,
(((1000000 / HZ) - 1)));
@ -133,8 +161,7 @@ void __init leon_init_timers(irq_handler_t counter_fn)
# endif
} else {
printk(KERN_ERR "No Timer/irqctrl found\n");
BUG();
goto bad;
}
irq = request_irq(leon3_gptimer_irq,
@ -183,6 +210,11 @@ void __init leon_init_timers(irq_handler_t counter_fn)
#endif
}
return;
bad:
printk(KERN_ERR "No Timer/irqctrl found\n");
BUG();
return;
}
void leon_clear_clock_irq(void)