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authorJack Steiner <steiner@sgi.com>2008-05-06 15:18:57 -0500
committerTony Luck <tony.luck@intel.com>2008-05-14 14:22:04 -0700
commit2224661494278bfc1c35b392cf6ee6f58e1d5e64 (patch)
tree1a0bd165aedfd28191a017901490c5bf3fd9f328 /arch/ia64/uv
parent7868f1ed84696d3cca83558e8dd459f20a36d077 (diff)
downloadlinux-2.6.38-lt-ux500-2224661494278bfc1c35b392cf6ee6f58e1d5e64.tar.gz
[IA64] machvec support for SGI UV platform
This patch adds the basic IA64 machvec infrastructure to support the SGI "UV" platform. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/uv')
-rw-r--r--arch/ia64/uv/Makefile12
-rw-r--r--arch/ia64/uv/kernel/Makefile13
-rw-r--r--arch/ia64/uv/kernel/machvec.c11
-rw-r--r--arch/ia64/uv/kernel/setup.c98
4 files changed, 134 insertions, 0 deletions
diff --git a/arch/ia64/uv/Makefile b/arch/ia64/uv/Makefile
new file mode 100644
index 00000000000..aa9f91947c4
--- /dev/null
+++ b/arch/ia64/uv/Makefile
@@ -0,0 +1,12 @@
+# arch/ia64/uv/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2008 Silicon Graphics, Inc. All Rights Reserved.
+#
+# Makefile for the sn uv subplatform
+#
+
+obj-y += kernel/
diff --git a/arch/ia64/uv/kernel/Makefile b/arch/ia64/uv/kernel/Makefile
new file mode 100644
index 00000000000..8d92b4684d8
--- /dev/null
+++ b/arch/ia64/uv/kernel/Makefile
@@ -0,0 +1,13 @@
+# arch/ia64/uv/kernel/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2008 Silicon Graphics, Inc. All Rights Reserved.
+#
+
+EXTRA_CFLAGS += -Iarch/ia64/sn/include
+
+obj-y += setup.o
+obj-$(CONFIG_IA64_GENERIC) += machvec.o
diff --git a/arch/ia64/uv/kernel/machvec.c b/arch/ia64/uv/kernel/machvec.c
new file mode 100644
index 00000000000..50737a9dca7
--- /dev/null
+++ b/arch/ia64/uv/kernel/machvec.c
@@ -0,0 +1,11 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
+ */
+
+#define MACHVEC_PLATFORM_NAME uv
+#define MACHVEC_PLATFORM_HEADER <asm/machvec_uv.h>
+#include <asm/machvec_init.h>
diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c
new file mode 100644
index 00000000000..9aa743203c3
--- /dev/null
+++ b/arch/ia64/uv/kernel/setup.c
@@ -0,0 +1,98 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * SGI UV Core Functions
+ *
+ * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#include <linux/module.h>
+#include <linux/percpu.h>
+#include <asm/sn/simulator.h>
+#include <asm/uv/uv_mmrs.h>
+#include <asm/uv/uv_hub.h>
+
+DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
+EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
+
+
+struct redir_addr {
+ unsigned long redirect;
+ unsigned long alias;
+};
+
+#define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
+
+static __initdata struct redir_addr redir_addrs[] = {
+ {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG},
+ {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG},
+ {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG},
+};
+
+static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
+{
+ union uvh_si_alias0_overlay_config_u alias;
+ union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
+ alias.v = uv_read_local_mmr(redir_addrs[i].alias);
+ if (alias.s.base == 0) {
+ *size = (1UL << alias.s.m_alias);
+ redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
+ *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
+ return;
+ }
+ }
+ BUG();
+}
+
+void __init uv_setup(char **cmdline_p)
+{
+ union uvh_si_addr_map_config_u m_n_config;
+ union uvh_node_id_u node_id;
+ unsigned long gnode_upper;
+ int nid, cpu, m_val, n_val;
+ unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size;
+
+ if (IS_MEDUSA()) {
+ lowmem_redir_base = 0;
+ lowmem_redir_size = 0;
+ node_id.v = 0;
+ m_n_config.s.m_skt = 37;
+ m_n_config.s.n_skt = 0;
+ mmr_base = 0;
+ } else {
+ get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
+ node_id.v = uv_read_local_mmr(UVH_NODE_ID);
+ m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
+ mmr_base =
+ uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
+ ~UV_MMR_ENABLE;
+ }
+
+ m_val = m_n_config.s.m_skt;
+ n_val = m_n_config.s.n_skt;
+ printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
+
+ gnode_upper = (((unsigned long)node_id.s.node_id) &
+ ~((1 << n_val) - 1)) << m_val;
+
+ for_each_present_cpu(cpu) {
+ nid = cpu_to_node(cpu);
+ uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
+ uv_cpu_hub_info(cpu)->lowmem_remap_top =
+ lowmem_redir_base + lowmem_redir_size;
+ uv_cpu_hub_info(cpu)->m_val = m_val;
+ uv_cpu_hub_info(cpu)->n_val = m_val;
+ uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) -1;
+ uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
+ uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
+ uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
+ uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */
+ printk(KERN_DEBUG "UV cpu %d, nid %d\n", cpu, nid);
+ }
+}
+