MIPS: Netlogic: Support for multi-chip configuration

Upto 4 Netlogic XLP SoCs can be connected over ICI links to form a
coherent multi-node system.  Each SoC has its own set of on-chip
devices including PIC.  To support this, add a per SoC stucture and
use it for the PIC and SYS block addresses instead of using global
variables.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4469
Signed-off-by: John Crispin <blogic@openwrt.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/mips/include/asm/netlogic/mips-extns.h b/arch/mips/include/asm/netlogic/mips-extns.h
index 8c53d0ba4bf2..c9f6de53d410 100644
--- a/arch/mips/include/asm/netlogic/mips-extns.h
+++ b/arch/mips/include/asm/netlogic/mips-extns.h
@@ -73,4 +73,9 @@ static inline int hard_smp_processor_id(void)
         return __read_32bit_c0_register($15, 1) & 0x3ff;
 }
 
+static inline int nlm_nodeid(void)
+{
+        return (__read_32bit_c0_register($15, 1) >> 5) & 0x3;
+}
+
 #endif /*_ASM_NLM_MIPS_EXTS_H */