diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2013-10-17 02:42:26 +0400 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2014-01-14 10:19:58 -0800 |
| commit | f615136c06a791364f5afa8b8ba965315a6440f1 (patch) | |
| tree | d9ced4cfdfd13438ce23384fbd64006bb74fd8b6 /arch/xtensa/kernel/irq.c | |
| parent | 26a8e96a8b37e8070fa9dcb1b7490cf4d4492d50 (diff) | |
xtensa: add SMP support
This is largely based on SMP code from the xtensa-2.6.29-smp tree by
Piet Delaney, Marc Gauthier, Joe Taylor, Christian Zankel (and possibly
other Tensilica folks).
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/kernel/irq.c')
| -rw-r--r-- | arch/xtensa/kernel/irq.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c index 7d49730f4056..fad9e0059765 100644 --- a/arch/xtensa/kernel/irq.c +++ b/arch/xtensa/kernel/irq.c @@ -4,7 +4,7 @@ * Xtensa built-in interrupt controller and some generic functions copied * from i386. * - * Copyright (C) 2002 - 2006 Tensilica, Inc. + * Copyright (C) 2002 - 2013 Tensilica, Inc. * Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar * * @@ -19,10 +19,12 @@ #include <linux/irq.h> #include <linux/kernel_stat.h> #include <linux/irqchip.h> +#include <linux/irqchip/xtensa-mx.h> #include <linux/irqchip/xtensa-pic.h> #include <linux/irqdomain.h> #include <linux/of.h> +#include <asm/mxregs.h> #include <asm/uaccess.h> #include <asm/platform.h> @@ -55,6 +57,9 @@ asmlinkage void do_IRQ(int hwirq, struct pt_regs *regs) int arch_show_interrupts(struct seq_file *p, int prec) { +#ifdef CONFIG_SMP + show_ipi_list(p, prec); +#endif seq_printf(p, "%*s: ", prec, "ERR"); seq_printf(p, "%10u\n", atomic_read(&irq_err_count)); return 0; @@ -136,7 +141,15 @@ void __init init_IRQ(void) #ifdef CONFIG_OF irqchip_init(); #else +#ifdef CONFIG_HAVE_SMP + xtensa_mx_init_legacy(NULL); +#else xtensa_pic_init_legacy(NULL); #endif +#endif + +#ifdef CONFIG_SMP + ipi_init(); +#endif variant_init_irq(); } |