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| author | Jiri Kosina <jkosina@suse.cz> | 2010-04-23 02:08:44 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2010-04-23 02:08:44 +0200 |
| commit | 6c9468e9eb1252eaefd94ce7f06e1be9b0b641b1 (patch) | |
| tree | 797676a336b050bfa1ef879377c07e541b9075d6 /arch/blackfin/mach-bf561/hotplug.c | |
| parent | UML: Fix compiler warning due to missing task_struct declaration (diff) | |
| parent | Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 (diff) | |
| download | linux-6c9468e9eb1252eaefd94ce7f06e1be9b0b641b1.tar.xz linux-6c9468e9eb1252eaefd94ce7f06e1be9b0b641b1.zip | |
Merge branch 'master' into for-next
Diffstat (limited to 'arch/blackfin/mach-bf561/hotplug.c')
| -rw-r--r-- | arch/blackfin/mach-bf561/hotplug.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf561/hotplug.c b/arch/blackfin/mach-bf561/hotplug.c new file mode 100644 index 000000000000..c95169b612dc --- /dev/null +++ b/arch/blackfin/mach-bf561/hotplug.c @@ -0,0 +1,32 @@ +/* + * Copyright 2007-2009 Analog Devices Inc. + * Graff Yang <graf.yang@analog.com> + * + * Licensed under the GPL-2 or later. + */ + +#include <asm/blackfin.h> +#include <asm/smp.h> +#define SIC_SYSIRQ(irq) (irq - (IRQ_CORETMR + 1)) + +int hotplug_coreb; + +void platform_cpu_die(void) +{ + unsigned long iwr[2] = {0, 0}; + unsigned long bank = SIC_SYSIRQ(IRQ_SUPPLE_0) / 32; + unsigned long bit = 1 << (SIC_SYSIRQ(IRQ_SUPPLE_0) % 32); + + hotplug_coreb = 1; + + iwr[bank] = bit; + + /* disable core timer */ + bfin_write_TCNTL(0); + + /* clear ipi interrupt IRQ_SUPPLE_0 */ + bfin_write_SICB_SYSCR(bfin_read_SICB_SYSCR() | (1 << (10 + 1))); + SSYNC(); + + coreb_sleep(iwr[0], iwr[1], 0); +} |