projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Written by: Patricia Gaughen, IBM Corporation | |
| 3 | * | |
| 4 | * Copyright (C) 2002, IBM Corp. | |
| 5 | * | |
| 6 | * All rights reserved. | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License as published by | |
| 10 | * the Free Software Foundation; either version 2 of the License, or | |
| 11 | * (at your option) any later version. | |
| 12 | * | |
| 13 | * This program is distributed in the hope that it will be useful, but | |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
| 16 | * NON INFRINGEMENT. See the GNU General Public License for more | |
| 17 | * details. | |
| 18 | * | |
| 19 | * You should have received a copy of the GNU General Public License | |
| 20 | * along with this program; if not, write to the Free Software | |
| 21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 22 | * | |
| 23 | * Send feedback to <gone@us.ibm.com> | |
| 24 | */ | |
| 25 | ||
| 1da177e4 LT |
26 | #include <linux/mm.h> |
| 27 | #include <linux/bootmem.h> | |
| 28 | #include <linux/mmzone.h> | |
| 29 | #include <linux/module.h> | |
| 30 | #include <linux/nodemask.h> | |
| 31 | #include <asm/numaq.h> | |
| 32 | #include <asm/topology.h> | |
| e1474e2d | 33 | #include <asm/processor.h> |
| 1da177e4 LT |
34 | |
| 35 | #define MB_TO_PAGES(addr) ((addr) << (20 - PAGE_SHIFT)) | |
| 36 | ||
| 37 | /* | |
| 38 | * Function: smp_dump_qct() | |
| 39 | * | |
| 40 | * Description: gets memory layout from the quad config table. This | |
| 41 | * function also updates node_online_map with the nodes (quads) present. | |
| 42 | */ | |
| 43 | static void __init smp_dump_qct(void) | |
| 44 | { | |
| 45 | int node; | |
| 46 | struct eachquadmem *eq; | |
| 47 | struct sys_cfg_data *scd = | |
| 48 | (struct sys_cfg_data *)__va(SYS_CFG_DATA_PRIV_ADDR); | |
| 49 | ||
| 50 | nodes_clear(node_online_map); | |
| 51 | for_each_node(node) { | |
| 52 | if (scd->quads_present31_0 & (1 << node)) { | |
| 53 | node_set_online(node); | |
| 54 | eq = &scd->eq[node]; | |
| 55 | /* Convert to pages */ | |
| 56 | node_start_pfn[node] = MB_TO_PAGES( | |
| 57 | eq->hi_shrd_mem_start - eq->priv_mem_size); | |
| 58 | node_end_pfn[node] = MB_TO_PAGES( | |
| 59 | eq->hi_shrd_mem_start + eq->hi_shrd_mem_size); | |
| 60 | ||
| 61 | memory_present(node, | |
| 62 | node_start_pfn[node], node_end_pfn[node]); | |
| 63 | node_remap_size[node] = node_memmap_size_bytes(node, | |
| 64 | node_start_pfn[node], | |
| 65 | node_end_pfn[node]); | |
| 66 | } | |
| 67 | } | |
| 68 | } | |
| 69 | ||
| 70 | /* | |
| 71 | * Unlike Summit, we don't really care to let the NUMA-Q | |
| 72 | * fall back to flat mode. Don't compile for NUMA-Q | |
| 73 | * unless you really need it! | |
| 74 | */ | |
| 75 | int __init get_memcfg_numaq(void) | |
| 76 | { | |
| 77 | smp_dump_qct(); | |
| 78 | return 1; | |
| 79 | } | |
| e1474e2d | 80 | |
| 539eb11e | 81 | static int __init numaq_tsc_disable(void) |
| e1474e2d | 82 | { |
| 539eb11e | 83 | if (num_online_nodes() > 1) { |
| 84 | printk(KERN_DEBUG "NUMAQ: disabling TSC\n"); | |
| 404ee5b1 | 85 | setup_clear_cpu_cap(X86_FEATURE_TSC); |
| 539eb11e | 86 | } |
| e1474e2d DH |
87 | return 0; |
| 88 | } | |
| 539eb11e | 89 | arch_initcall(numaq_tsc_disable); |
| f3294690 IM |
90 | |
| 91 | #ifdef CONFIG_ACPI | |
| 92 | /* | |
| 93 | * Dummy implementation: | |
| 94 | */ | |
| 95 | struct pci_bus * __devinit | |
| 96 | pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum) | |
| 97 | { | |
| 98 | return NULL; | |
| 99 | } | |
| 100 | #endif |