aboutsummaryrefslogtreecommitdiffstats
path: root/arch/ia64/uv/kernel
diff options
context:
space:
mode:
authorJack Steiner <steiner@sgi.com>2008-05-06 16:18:57 -0400
committerTony Luck <tony.luck@intel.com>2008-05-14 17:22:04 -0400
commit2224661494278bfc1c35b392cf6ee6f58e1d5e64 (patch)
tree1a0bd165aedfd28191a017901490c5bf3fd9f328 /arch/ia64/uv/kernel
parent7868f1ed84696d3cca83558e8dd459f20a36d077 (diff)
[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/kernel')
-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
3 files changed, 122 insertions, 0 deletions
diff --git a/arch/ia64/uv/kernel/Makefile b/arch/ia64/uv/kernel/Makefile
new file mode 100644
index 000000000000..8d92b4684d8e
--- /dev/null
+++ b/arch/ia64/uv/kernel/Makefile
@@ -0,0 +1,13 @@
1# arch/ia64/uv/kernel/Makefile
2#
3# This file is subject to the terms and conditions of the GNU General Public
4# License. See the file "COPYING" in the main directory of this archive
5# for more details.
6#
7# Copyright (C) 2008 Silicon Graphics, Inc. All Rights Reserved.
8#
9
10EXTRA_CFLAGS += -Iarch/ia64/sn/include
11
12obj-y += setup.o
13obj-$(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 000000000000..50737a9dca74
--- /dev/null
+++ b/arch/ia64/uv/kernel/machvec.c
@@ -0,0 +1,11 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
7 */
8
9#define MACHVEC_PLATFORM_NAME uv
10#define MACHVEC_PLATFORM_HEADER <asm/machvec_uv.h>
11#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 000000000000..9aa743203c3c
--- /dev/null
+++ b/arch/ia64/uv/kernel/setup.c
@@ -0,0 +1,98 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * SGI UV Core Functions
7 *
8 * Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
9 */
10
11#include <linux/module.h>
12#include <linux/percpu.h>
13#include <asm/sn/simulator.h>
14#include <asm/uv/uv_mmrs.h>
15#include <asm/uv/uv_hub.h>
16
17DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
18EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
19
20
21struct redir_addr {
22 unsigned long redirect;
23 unsigned long alias;
24};
25
26#define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
27
28static __initdata struct redir_addr redir_addrs[] = {
29 {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG},
30 {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG},
31 {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG},
32};
33
34static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
35{
36 union uvh_si_alias0_overlay_config_u alias;
37 union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect;
38 int i;
39
40 for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
41 alias.v = uv_read_local_mmr(redir_addrs[i].alias);
42 if (alias.s.base == 0) {
43 *size = (1UL << alias.s.m_alias);
44 redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
45 *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
46 return;
47 }
48 }
49 BUG();
50}
51
52void __init uv_setup(char **cmdline_p)
53{
54 union uvh_si_addr_map_config_u m_n_config;
55 union uvh_node_id_u node_id;
56 unsigned long gnode_upper;
57 int nid, cpu, m_val, n_val;
58 unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size;
59
60 if (IS_MEDUSA()) {
61 lowmem_redir_base = 0;
62 lowmem_redir_size = 0;
63 node_id.v = 0;
64 m_n_config.s.m_skt = 37;
65 m_n_config.s.n_skt = 0;
66 mmr_base = 0;
67 } else {
68 get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
69 node_id.v = uv_read_local_mmr(UVH_NODE_ID);
70 m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
71 mmr_base =
72 uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
73 ~UV_MMR_ENABLE;
74 }
75
76 m_val = m_n_config.s.m_skt;
77 n_val = m_n_config.s.n_skt;
78 printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
79
80 gnode_upper = (((unsigned long)node_id.s.node_id) &
81 ~((1 << n_val) - 1)) << m_val;
82
83 for_each_present_cpu(cpu) {
84 nid = cpu_to_node(cpu);
85 uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
86 uv_cpu_hub_info(cpu)->lowmem_remap_top =
87 lowmem_redir_base + lowmem_redir_size;
88 uv_cpu_hub_info(cpu)->m_val = m_val;
89 uv_cpu_hub_info(cpu)->n_val = m_val;
90 uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) -1;
91 uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
92 uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
93 uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
94 uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */
95 printk(KERN_DEBUG "UV cpu %d, nid %d\n", cpu, nid);
96 }
97}
98