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authorDaniel Hellstrom <daniel@gaisler.com>2011-01-04 01:41:30 +0000
committerDavid S. Miller <davem@davemloft.net>2011-01-04 11:16:36 -0800
commite2305e37d4c82ef55be54e9edc8a7e2250739b4f (patch)
treee3db48384802210c241ea3450841a78b82620afd /arch/sparc/include/asm/leon.h
parent53aea7caf2e27108912b9b9dbc5bfe18dbbaec9d (diff)
downloadop-kernel-dev-e2305e37d4c82ef55be54e9edc8a7e2250739b4f.zip
op-kernel-dev-e2305e37d4c82ef55be54e9edc8a7e2250739b4f.tar.gz
SPARC/LEON: added support for IRQAMP IRQ Controller
Needed for LEON AMP systems where different CPUs are routed to different IRQ controllers. This patch selects the IRQ Controller which has been routed to the boot CPU, it is up to the boot loader to configure the IRQ controller. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/leon.h')
-rw-r--r--arch/sparc/include/asm/leon.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h
index 3ea5964..8580d17 100644
--- a/arch/sparc/include/asm/leon.h
+++ b/arch/sparc/include/asm/leon.h
@@ -224,6 +224,18 @@ static inline void sparc_leon3_disable_cache(void)
"sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
};
+static inline unsigned long sparc_leon3_asr17(void)
+{
+ u32 asr17;
+ __asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17));
+ return asr17;
+};
+
+static inline int sparc_leon3_cpuid(void)
+{
+ return sparc_leon3_asr17() >> 28;
+}
+
#endif /*!__ASSEMBLY__*/
#ifdef CONFIG_SMP
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