[IA64] remove duplicate include iommu.h
[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 long sn_partition_id;
23 EXPORT_SYMBOL(sn_partition_id);
24 long sn_coherency_id;
25 EXPORT_SYMBOL_GPL(sn_coherency_id);
26 long sn_region_size;
27 EXPORT_SYMBOL(sn_region_size);
28 #endif
29
30 struct redir_addr {
31         unsigned long redirect;
32         unsigned long alias;
33 };
34
35 #define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
36
37 static __initdata struct redir_addr redir_addrs[] = {
38         {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG},
39         {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG},
40         {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG},
41 };
42
43 static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
44 {
45         union uvh_si_alias0_overlay_config_u alias;
46         union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect;
47         int i;
48
49         for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
50                 alias.v = uv_read_local_mmr(redir_addrs[i].alias);
51                 if (alias.s.base == 0) {
52                         *size = (1UL << alias.s.m_alias);
53                         redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
54                         *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
55                         return;
56                 }
57         }
58         BUG();
59 }
60
61 void __init uv_setup(char **cmdline_p)
62 {
63         union uvh_si_addr_map_config_u m_n_config;
64         union uvh_node_id_u node_id;
65         unsigned long gnode_upper;
66         int nid, cpu, m_val, n_val;
67         unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size;
68
69         if (IS_MEDUSA()) {
70                 lowmem_redir_base = 0;
71                 lowmem_redir_size = 0;
72                 node_id.v = 0;
73                 m_n_config.s.m_skt = 37;
74                 m_n_config.s.n_skt = 0;
75                 mmr_base = 0;
76 #if 0
77                 /* Need BIOS calls - TDB */
78                 if (!ia64_sn_is_fake_prom())
79                         sn_prom_type = 1;
80                 else
81 #endif
82                         sn_prom_type = 2;
83                 printk(KERN_INFO "Running on medusa with %s PROM\n",
84                                         (sn_prom_type == 1) ? "real" : "fake");
85         } else {
86                 get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
87                 node_id.v = uv_read_local_mmr(UVH_NODE_ID);
88                 m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
89                 mmr_base =
90                         uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
91                                 ~UV_MMR_ENABLE;
92         }
93
94         m_val = m_n_config.s.m_skt;
95         n_val = m_n_config.s.n_skt;
96         printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
97
98         gnode_upper = (((unsigned long)node_id.s.node_id) &
99                        ~((1 << n_val) - 1)) << m_val;
100
101         for_each_present_cpu(cpu) {
102                 nid = cpu_to_node(cpu);
103                 uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
104                 uv_cpu_hub_info(cpu)->lowmem_remap_top =
105                         lowmem_redir_base + lowmem_redir_size;
106                 uv_cpu_hub_info(cpu)->m_val = m_val;
107                 uv_cpu_hub_info(cpu)->n_val = m_val;
108                 uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) -1;
109                 uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
110                 uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
111                 uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
112                 uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */
113                 printk(KERN_DEBUG "UV cpu %d, nid %d\n", cpu, nid);
114         }
115 }
116