MIPS: Netlogic: Make number of nodes configurable
There can be 1, 2 or 4 SoCs(nodes) in a multi-chip XLP board. Add an
option for multi-chip boards in case of XLP, and make the number of
nodes configurable.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4470
Signed-off-by: John Crispin <blogic@openwrt.org>
diff --git a/arch/mips/include/asm/mach-netlogic/irq.h b/arch/mips/include/asm/mach-netlogic/irq.h
index b590245..868ed8a 100644
--- a/arch/mips/include/asm/mach-netlogic/irq.h
+++ b/arch/mips/include/asm/mach-netlogic/irq.h
@@ -8,7 +8,9 @@
#ifndef __ASM_NETLOGIC_IRQ_H
#define __ASM_NETLOGIC_IRQ_H
-#define NR_IRQS 64
+#include <asm/mach-netlogic/multi-node.h>
+#define NR_IRQS (64 * NLM_NR_NODES)
+
#define MIPS_CPU_IRQ_BASE 0
#endif /* __ASM_NETLOGIC_IRQ_H */
diff --git a/arch/mips/include/asm/mach-netlogic/multi-node.h b/arch/mips/include/asm/mach-netlogic/multi-node.h
new file mode 100644
index 0000000..d62fc77
--- /dev/null
+++ b/arch/mips/include/asm/mach-netlogic/multi-node.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2003-2012 Broadcom Corporation
+ * All Rights Reserved
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the Broadcom
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _NETLOGIC_MULTI_NODE_H_
+#define _NETLOGIC_MULTI_NODE_H_
+
+#ifndef CONFIG_NLM_MULTINODE
+#define NLM_NR_NODES 1
+#else
+#if defined(CONFIG_NLM_MULTINODE_2)
+#define NLM_NR_NODES 2
+#elif defined(CONFIG_NLM_MULTINODE_4)
+#define NLM_NR_NODES 4
+#else
+#define NLM_NR_NODES 1
+#endif
+#endif
+
+#define NLM_CORES_PER_NODE 8
+#define NLM_THREADS_PER_CORE 4
+#define NLM_CPUS_PER_NODE (NLM_CORES_PER_NODE * NLM_THREADS_PER_CORE)
+
+#endif
diff --git a/arch/mips/include/asm/netlogic/common.h b/arch/mips/include/asm/netlogic/common.h
index 2eb39fa..3c6814e 100644
--- a/arch/mips/include/asm/netlogic/common.h
+++ b/arch/mips/include/asm/netlogic/common.h
@@ -48,6 +48,7 @@
#include <linux/cpumask.h>
#include <linux/spinlock.h>
#include <asm/irq.h>
+#include <asm/mach-netlogic/multi-node.h>
struct irq_desc;
void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc);
@@ -86,12 +87,12 @@
spinlock_t piclock;
};
-#define NLM_CORES_PER_NODE 8
-#define NLM_THREADS_PER_CORE 4
-#define NLM_CPUS_PER_NODE (NLM_CORES_PER_NODE * NLM_THREADS_PER_CORE)
#define nlm_get_node(i) (&nlm_nodes[i])
-#define NLM_NR_NODES 1
+#ifdef CONFIG_CPU_XLR
#define nlm_current_node() (&nlm_nodes[0])
+#else
+#define nlm_current_node() (&nlm_nodes[nlm_nodeid()])
+#endif
struct irq_data;
uint64_t nlm_pci_irqmask(int node);
diff --git a/arch/mips/netlogic/Kconfig b/arch/mips/netlogic/Kconfig
index 8059eb7..3c05bf9 100644
--- a/arch/mips/netlogic/Kconfig
+++ b/arch/mips/netlogic/Kconfig
@@ -9,6 +9,34 @@
This DTB will be used if the firmware does not pass in a DTB
pointer to the kernel. The corresponding DTS file is at
arch/mips/netlogic/dts/xlp_evp.dts
+
+config NLM_MULTINODE
+ bool "Support for multi-chip boards"
+ depends on NLM_XLP_BOARD
+ default n
+ help
+ Add support for boards with 2 or 4 XLPs connected over ICI.
+
+if NLM_MULTINODE
+choice
+ prompt "Number of XLPs on the board"
+ default NLM_MULTINODE_2
+ help
+ In the multi-node case, specify the number of SoCs on the board.
+
+config NLM_MULTINODE_2
+ bool "Dual-XLP board"
+ help
+ Support boards with upto two XLPs connected over ICI.
+
+config NLM_MULTINODE_4
+ bool "Quad-XLP board"
+ help
+ Support boards with upto four XLPs connected over ICI.
+
+endchoice
+
+endif
endif
config NLM_COMMON