| Jack Steiner | 2224661 | 2008-05-06 15:18:57 -0500 | [diff] [blame^] | 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 | |
| 21 | struct 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 | |
| 28 | static __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 | |
| 34 | static __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 | |
| 52 | void __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 | |