projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 |