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sparc32,leon: per-cpu ticker use genirq per-cpu handler

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Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Hellstrom
2011-04-19 23:41:23 +00:00
committed by David S. Miller
parent 4c6773c395
commit 2cf9530420
4 changed files with 22 additions and 51 deletions
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39
arch/sparc/kernel/leon_kernel.c
View File

@@ -26,7 +26,6 @@
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;
@@ -36,6 +35,7 @@ static DEFINE_SPINLOCK(leon_irq_lock);
unsigned long leon3_gptimer_irq; /* interrupt controller irq number */
unsigned long leon3_gptimer_idx; /* Timer Index (0..6) within Timer Core */
int leon3_ticker_irq; /* Timer ticker IRQ */
unsigned int sparc_leon_eirq;
#define LEON_IMASK (&leon3_irqctrl_regs->mask[0])
#define LEON_IACK (&leon3_irqctrl_regs->iclear)
@@ -271,9 +271,7 @@ void __init leon_init_timers(irq_handler_t counter_fn)
&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl, 0);
#ifdef CONFIG_SMP
leon_percpu_timer_dev[0].start = (int)leon3_gptimer_regs;
leon_percpu_timer_dev[0].irq = leon3_gptimer_irq + 1 +
leon3_gptimer_idx;
leon3_ticker_irq = leon3_gptimer_irq + 1 + leon3_gptimer_idx;
if (!(LEON3_BYPASS_LOAD_PA(&leon3_gptimer_regs->config) &
(1<<LEON3_GPTIMER_SEPIRQ))) {
@@ -322,27 +320,6 @@ void __init leon_init_timers(irq_handler_t counter_fn)
prom_halt();
}
# ifdef CONFIG_SMP
{
unsigned long flags;
struct tt_entry *trap_table = &sparc_ttable[SP_TRAP_IRQ1 + (leon_percpu_timer_dev[0].irq - 1)];
/* For SMP we use the level 14 ticker, however the bootup code
* has copied the firmwares level 14 vector into boot cpu's
* trap table, we must fix this now or we get squashed.
*/
local_irq_save(flags);
patchme_maybe_smp_msg[0] = 0x01000000; /* NOP out the branch */
/* Adjust so that we jump directly to smpleon_ticker */
trap_table->inst_three += smpleon_ticker - real_irq_entry;
local_flush_cache_all();
local_irq_restore(flags);
}
# endif
if (leon3_gptimer_regs) {
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl,
LEON3_GPTIMER_EN |
@@ -350,6 +327,18 @@ void __init leon_init_timers(irq_handler_t counter_fn)
LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN);
#ifdef CONFIG_SMP
/* Install per-cpu IRQ handler for broadcasted ticker */
irq = leon_build_device_irq(leon3_ticker_irq,
handle_percpu_irq, "per-cpu",
0);
err = request_irq(irq, leon_percpu_timer_interrupt,
IRQF_PERCPU | IRQF_TIMER, "ticker",
NULL);
if (err) {
printk(KERN_ERR "unable to attach ticker IRQ%d\n", irq);
prom_halt();
}
LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx+1].ctrl,
LEON3_GPTIMER_EN |
LEON3_GPTIMER_RL |