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22246614 JS |
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 | ||
17 | DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info); | |
18 | EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info); | |
19 | ||
732a675a JS |
20 | #ifdef CONFIG_IA64_SGI_UV |
21 | int sn_prom_type; | |
22 | #endif | |
22246614 JS |
23 | |
24 | struct redir_addr { | |
25 | unsigned long redirect; | |
26 | unsigned long alias; | |
27 | }; | |
28 | ||
29 | #define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT | |
30 | ||
31 | static __initdata struct redir_addr redir_addrs[] = { | |
32 | {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG}, | |
33 | {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG}, | |
34 | {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG}, | |
35 | }; | |
36 | ||
37 | static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size) | |
38 | { | |
39 | union uvh_si_alias0_overlay_config_u alias; | |
40 | union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect; | |
41 | int i; | |
42 | ||
43 | for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) { | |
44 | alias.v = uv_read_local_mmr(redir_addrs[i].alias); | |
45 | if (alias.s.base == 0) { | |
46 | *size = (1UL << alias.s.m_alias); | |
47 | redirect.v = uv_read_local_mmr(redir_addrs[i].redirect); | |
48 | *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT; | |
49 | return; | |
50 | } | |
51 | } | |
52 | BUG(); | |
53 | } | |
54 | ||
55 | void __init uv_setup(char **cmdline_p) | |
56 | { | |
57 | union uvh_si_addr_map_config_u m_n_config; | |
58 | union uvh_node_id_u node_id; | |
59 | unsigned long gnode_upper; | |
60 | int nid, cpu, m_val, n_val; | |
61 | unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size; | |
62 | ||
63 | if (IS_MEDUSA()) { | |
64 | lowmem_redir_base = 0; | |
65 | lowmem_redir_size = 0; | |
66 | node_id.v = 0; | |
67 | m_n_config.s.m_skt = 37; | |
68 | m_n_config.s.n_skt = 0; | |
69 | mmr_base = 0; | |
732a675a JS |
70 | #if 0 |
71 | /* Need BIOS calls - TDB */ | |
72 | if (!ia64_sn_is_fake_prom()) | |
73 | sn_prom_type = 1; | |
74 | else | |
75 | #endif | |
76 | sn_prom_type = 2; | |
77 | printk(KERN_INFO "Running on medusa with %s PROM\n", | |
78 | (sn_prom_type == 1) ? "real" : "fake"); | |
22246614 JS |
79 | } else { |
80 | get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size); | |
81 | node_id.v = uv_read_local_mmr(UVH_NODE_ID); | |
82 | m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG); | |
83 | mmr_base = | |
84 | uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) & | |
85 | ~UV_MMR_ENABLE; | |
86 | } | |
87 | ||
88 | m_val = m_n_config.s.m_skt; | |
89 | n_val = m_n_config.s.n_skt; | |
90 | printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base); | |
91 | ||
92 | gnode_upper = (((unsigned long)node_id.s.node_id) & | |
93 | ~((1 << n_val) - 1)) << m_val; | |
94 | ||
95 | for_each_present_cpu(cpu) { | |
96 | nid = cpu_to_node(cpu); | |
97 | uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base; | |
98 | uv_cpu_hub_info(cpu)->lowmem_remap_top = | |
99 | lowmem_redir_base + lowmem_redir_size; | |
100 | uv_cpu_hub_info(cpu)->m_val = m_val; | |
101 | uv_cpu_hub_info(cpu)->n_val = m_val; | |
102 | uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) -1; | |
103 | uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1; | |
104 | uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper; | |
105 | uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base; | |
106 | uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */ | |
107 | printk(KERN_DEBUG "UV cpu %d, nid %d\n", cpu, nid); | |
108 | } | |
109 | } | |
110 |