[IA64] Fix CONFIG_IA64_SGI_UV build error
[linux-2.6.git] / arch / ia64 / uv / kernel / setup.c
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
20 #ifdef CONFIG_IA64_SGI_UV
21 int sn_prom_type;
22 #endif
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;
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");
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