lkml.org 
[lkml]   [2009]   [Jun]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 13/25] Blackfin: allow CONFIG_TICKSOURCE_GPTMR0 with interrupt pipeline
Date
From: Philippe Gerum <rpm@xenomai.org>

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
arch/blackfin/Kconfig | 1 -
arch/blackfin/include/asm/ipipe.h | 7 ++++-
arch/blackfin/mach-common/ints-priority.c | 47 +++++++++++++---------------
3 files changed, 28 insertions(+), 27 deletions(-)

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index c2c4a62..8140a2f 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -623,7 +623,6 @@ choice
config TICKSOURCE_GPTMR0
bool "Gptimer0 (SCLK domain)"
select BFIN_GPTIMERS
- depends on !IPIPE

config TICKSOURCE_CORETMR
bool "Core timer (CCLK domain)"
diff --git a/arch/blackfin/include/asm/ipipe.h b/arch/blackfin/include/asm/ipipe.h
index bbe1c37..ffa5e60 100644
--- a/arch/blackfin/include/asm/ipipe.h
+++ b/arch/blackfin/include/asm/ipipe.h
@@ -207,7 +207,7 @@ void ipipe_init_irq_threads(void);

int ipipe_start_irq_thread(unsigned irq, struct irq_desc *desc);

-#ifdef CONFIG_GENERIC_CLOCKEVENTS
+#ifdef CONFIG_TICKSOURCE_CORETMR
#define IRQ_SYSTMR IRQ_CORETMR
#define IRQ_PRIOTMR IRQ_CORETMR
#else
@@ -240,8 +240,13 @@ int ipipe_start_irq_thread(unsigned irq, struct irq_desc *desc);
#define ipipe_init_irq_threads() do { } while (0)
#define ipipe_start_irq_thread(irq, desc) 0

+#ifndef CONFIG_TICKSOURCE_GPTMR0
#define IRQ_SYSTMR IRQ_CORETMR
#define IRQ_PRIOTMR IRQ_CORETMR
+#else
+#define IRQ_SYSTMR IRQ_TIMER0
+#define IRQ_PRIOTMR CONFIG_IRQ_TIMER0
+#endif

#define __ipipe_root_tick_p(regs) 1

diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c
index af70f09..b421501 100644
--- a/arch/blackfin/mach-common/ints-priority.c
+++ b/arch/blackfin/mach-common/ints-priority.c
@@ -1052,35 +1052,34 @@ int __init init_arch_irq(void)
set_irq_chained_handler(irq, bfin_demux_error_irq);
break;
#endif
-#if defined(CONFIG_TICKSOURCE_GPTMR0)
- case IRQ_TIMER0:
- set_irq_handler(irq, handle_percpu_irq);
- break;
-#endif
#ifdef CONFIG_SMP
case IRQ_SUPPLE_0:
case IRQ_SUPPLE_1:
set_irq_handler(irq, handle_percpu_irq);
break;
#endif
- default:
#ifdef CONFIG_IPIPE
- /*
- * We want internal interrupt sources to be
- * masked, because ISRs may trigger interrupts
- * recursively (e.g. DMA), but interrupts are
- * _not_ masked at CPU level. So let's handle
- * most of them as level interrupts, except
- * the timer interrupt which is special.
- */
- if (irq == IRQ_SYSTMR || irq == IRQ_CORETMR)
- set_irq_handler(irq, handle_simple_irq);
- else
- set_irq_handler(irq, handle_level_irq);
+#ifndef CONFIG_TICKSOURCE_CORETMR
+ case IRQ_TIMER0:
+ set_irq_handler(irq, handle_simple_irq);
+ break;
+#endif /* !CONFIG_TICKSOURCE_CORETMR */
+ case IRQ_CORETMR:
+ set_irq_handler(irq, handle_simple_irq);
+ break;
+ default:
+ set_irq_handler(irq, handle_level_irq);
+ break;
#else /* !CONFIG_IPIPE */
+#ifdef CONFIG_TICKSOURCE_GPTMR0
+ case IRQ_TIMER0:
+ set_irq_handler(irq, handle_percpu_irq);
+ break;
+#endif /* CONFIG_TICKSOURCE_GPTMR0 */
+ default:
set_irq_handler(irq, handle_simple_irq);
-#endif /* !CONFIG_IPIPE */
break;
+#endif /* !CONFIG_IPIPE */
}
}

@@ -1224,15 +1223,14 @@ __attribute__((l1_text))
asmlinkage int __ipipe_grab_irq(int vec, struct pt_regs *regs)
{
struct ipipe_percpu_domain_data *p = ipipe_root_cpudom_ptr();
- struct ipipe_domain *this_domain = ipipe_current_domain;
+ struct ipipe_domain *this_domain = __ipipe_current_domain;
struct ivgx *ivg_stop = ivg7_13[vec-IVG7].istop;
struct ivgx *ivg = ivg7_13[vec-IVG7].ifirst;
int irq, s;

- if (likely(vec == EVT_IVTMR_P)) {
+ if (likely(vec == EVT_IVTMR_P))
irq = IRQ_CORETMR;
-
- } else {
+ else {
#if defined(SIC_ISR0) || defined(SICA_ISR0)
unsigned long sic_status[3];

@@ -1262,12 +1260,11 @@ asmlinkage int __ipipe_grab_irq(int vec, struct pt_regs *regs)
break;
}
#endif
-
irq = ivg->irqno;
}

if (irq == IRQ_SYSTMR) {
-#ifndef CONFIG_GENERIC_CLOCKEVENTS
+#if !defined(CONFIG_GENERIC_CLOCKEVENTS) || defined(CONFIG_TICKSOURCE_GPTMR0)
bfin_write_TIMER_STATUS(1); /* Latch TIMIL0 */
#endif
/* This is basically what we need from the register frame. */
--
1.6.3.1


\
 
 \ /
  Last update: 2009-06-20 20:53    [W:0.121 / U:5.384 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site