542 lines
14 KiB
C
542 lines
14 KiB
C
/*
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* Written by: Patricia Gaughen, IBM Corporation
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*
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* Copyright (C) 2002, IBM Corp.
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* Copyright (C) 2009, Red Hat, Inc., Ingo Molnar
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <gone@us.ibm.com>
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*/
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#include <linux/nodemask.h>
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#include <linux/topology.h>
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#include <linux/bootmem.h>
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#include <linux/memblock.h>
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <linux/kernel.h>
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#include <linux/mmzone.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/numa.h>
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#include <linux/smp.h>
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#include <linux/io.h>
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#include <linux/mm.h>
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#include <asm/processor.h>
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#include <asm/fixmap.h>
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#include <asm/mpspec.h>
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#include <asm/numaq.h>
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#include <asm/setup.h>
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#include <asm/apic.h>
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#include <asm/e820.h>
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#include <asm/ipi.h>
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int found_numaq;
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/*
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* Have to match translation table entries to main table entries by counter
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* hence the mpc_record variable .... can't see a less disgusting way of
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* doing this ....
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*/
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struct mpc_trans {
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unsigned char mpc_type;
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unsigned char trans_len;
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unsigned char trans_type;
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unsigned char trans_quad;
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unsigned char trans_global;
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unsigned char trans_local;
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unsigned short trans_reserved;
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};
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static int mpc_record;
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static struct mpc_trans *translation_table[MAX_MPC_ENTRY];
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int mp_bus_id_to_node[MAX_MP_BUSSES];
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int mp_bus_id_to_local[MAX_MP_BUSSES];
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int quad_local_to_mp_bus_id[NR_CPUS/4][4];
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static inline void numaq_register_node(int node, struct sys_cfg_data *scd)
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{
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struct eachquadmem *eq = scd->eq + node;
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u64 start = (u64)(eq->hi_shrd_mem_start - eq->priv_mem_size) << 20;
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u64 end = (u64)(eq->hi_shrd_mem_start + eq->hi_shrd_mem_size) << 20;
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int ret;
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node_set(node, numa_nodes_parsed);
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ret = numa_add_memblk(node, start, end);
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BUG_ON(ret < 0);
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}
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/*
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* Function: smp_dump_qct()
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*
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* Description: gets memory layout from the quad config table. This
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* function also updates numa_nodes_parsed with the nodes (quads) present.
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*/
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static void __init smp_dump_qct(void)
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{
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struct sys_cfg_data *scd;
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int node;
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scd = (void *)__va(SYS_CFG_DATA_PRIV_ADDR);
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for_each_node(node) {
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if (scd->quads_present31_0 & (1 << node))
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numaq_register_node(node, scd);
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}
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}
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void __cpuinit numaq_tsc_disable(void)
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{
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if (!found_numaq)
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return;
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if (num_online_nodes() > 1) {
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printk(KERN_DEBUG "NUMAQ: disabling TSC\n");
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setup_clear_cpu_cap(X86_FEATURE_TSC);
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}
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}
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static void __init numaq_tsc_init(void)
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{
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numaq_tsc_disable();
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}
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static inline int generate_logical_apicid(int quad, int phys_apicid)
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{
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return (quad << 4) + (phys_apicid ? phys_apicid << 1 : 1);
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}
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/* x86_quirks member */
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static int mpc_apic_id(struct mpc_cpu *m)
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{
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int quad = translation_table[mpc_record]->trans_quad;
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int logical_apicid = generate_logical_apicid(quad, m->apicid);
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printk(KERN_DEBUG
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"Processor #%d %u:%u APIC version %d (quad %d, apic %d)\n",
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m->apicid, (m->cpufeature & CPU_FAMILY_MASK) >> 8,
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(m->cpufeature & CPU_MODEL_MASK) >> 4,
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m->apicver, quad, logical_apicid);
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return logical_apicid;
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}
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/* x86_quirks member */
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static void mpc_oem_bus_info(struct mpc_bus *m, char *name)
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{
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int quad = translation_table[mpc_record]->trans_quad;
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int local = translation_table[mpc_record]->trans_local;
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mp_bus_id_to_node[m->busid] = quad;
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mp_bus_id_to_local[m->busid] = local;
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printk(KERN_INFO "Bus #%d is %s (node %d)\n", m->busid, name, quad);
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}
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/* x86_quirks member */
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static void mpc_oem_pci_bus(struct mpc_bus *m)
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{
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int quad = translation_table[mpc_record]->trans_quad;
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int local = translation_table[mpc_record]->trans_local;
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quad_local_to_mp_bus_id[quad][local] = m->busid;
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}
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/*
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* Called from mpparse code.
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* mode = 0: prescan
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* mode = 1: one mpc entry scanned
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*/
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static void numaq_mpc_record(unsigned int mode)
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{
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if (!mode)
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mpc_record = 0;
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else
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mpc_record++;
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}
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static void __init MP_translation_info(struct mpc_trans *m)
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{
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printk(KERN_INFO
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"Translation: record %d, type %d, quad %d, global %d, local %d\n",
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mpc_record, m->trans_type, m->trans_quad, m->trans_global,
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m->trans_local);
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if (mpc_record >= MAX_MPC_ENTRY)
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printk(KERN_ERR "MAX_MPC_ENTRY exceeded!\n");
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else
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translation_table[mpc_record] = m; /* stash this for later */
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if (m->trans_quad < MAX_NUMNODES && !node_online(m->trans_quad))
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node_set_online(m->trans_quad);
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}
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static int __init mpf_checksum(unsigned char *mp, int len)
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{
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int sum = 0;
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while (len--)
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sum += *mp++;
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return sum & 0xFF;
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}
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/*
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* Read/parse the MPC oem tables
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*/
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static void __init smp_read_mpc_oem(struct mpc_table *mpc)
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{
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struct mpc_oemtable *oemtable = (void *)(long)mpc->oemptr;
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int count = sizeof(*oemtable); /* the header size */
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unsigned char *oemptr = ((unsigned char *)oemtable) + count;
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mpc_record = 0;
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printk(KERN_INFO
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"Found an OEM MPC table at %8p - parsing it...\n", oemtable);
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if (memcmp(oemtable->signature, MPC_OEM_SIGNATURE, 4)) {
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printk(KERN_WARNING
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"SMP mpc oemtable: bad signature [%c%c%c%c]!\n",
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oemtable->signature[0], oemtable->signature[1],
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oemtable->signature[2], oemtable->signature[3]);
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return;
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}
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if (mpf_checksum((unsigned char *)oemtable, oemtable->length)) {
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printk(KERN_WARNING "SMP oem mptable: checksum error!\n");
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return;
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}
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while (count < oemtable->length) {
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switch (*oemptr) {
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case MP_TRANSLATION:
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{
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struct mpc_trans *m = (void *)oemptr;
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MP_translation_info(m);
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oemptr += sizeof(*m);
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count += sizeof(*m);
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++mpc_record;
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break;
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}
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default:
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printk(KERN_WARNING
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"Unrecognised OEM table entry type! - %d\n",
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(int)*oemptr);
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return;
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}
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}
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}
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static __init void early_check_numaq(void)
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{
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/*
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* get boot-time SMP configuration:
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*/
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if (smp_found_config)
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early_get_smp_config();
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if (found_numaq) {
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x86_init.mpparse.mpc_record = numaq_mpc_record;
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x86_init.mpparse.setup_ioapic_ids = x86_init_noop;
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x86_init.mpparse.mpc_apic_id = mpc_apic_id;
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x86_init.mpparse.smp_read_mpc_oem = smp_read_mpc_oem;
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x86_init.mpparse.mpc_oem_pci_bus = mpc_oem_pci_bus;
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x86_init.mpparse.mpc_oem_bus_info = mpc_oem_bus_info;
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x86_init.timers.tsc_pre_init = numaq_tsc_init;
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x86_init.pci.init = pci_numaq_init;
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}
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}
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int __init numaq_numa_init(void)
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{
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early_check_numaq();
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if (!found_numaq)
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return -ENOENT;
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smp_dump_qct();
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return 0;
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}
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#define NUMAQ_APIC_DFR_VALUE (APIC_DFR_CLUSTER)
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static inline unsigned int numaq_get_apic_id(unsigned long x)
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{
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return (x >> 24) & 0x0F;
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}
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static inline void numaq_send_IPI_mask(const struct cpumask *mask, int vector)
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{
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default_send_IPI_mask_sequence_logical(mask, vector);
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}
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static inline void numaq_send_IPI_allbutself(int vector)
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{
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default_send_IPI_mask_allbutself_logical(cpu_online_mask, vector);
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}
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static inline void numaq_send_IPI_all(int vector)
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{
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numaq_send_IPI_mask(cpu_online_mask, vector);
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}
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#define NUMAQ_TRAMPOLINE_PHYS_LOW (0x8)
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#define NUMAQ_TRAMPOLINE_PHYS_HIGH (0xa)
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/*
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* Because we use NMIs rather than the INIT-STARTUP sequence to
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* bootstrap the CPUs, the APIC may be in a weird state. Kick it:
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*/
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static inline void numaq_smp_callin_clear_local_apic(void)
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{
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clear_local_APIC();
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}
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static inline const struct cpumask *numaq_target_cpus(void)
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{
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return cpu_all_mask;
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}
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static unsigned long numaq_check_apicid_used(physid_mask_t *map, int apicid)
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{
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return physid_isset(apicid, *map);
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}
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static inline unsigned long numaq_check_apicid_present(int bit)
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{
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return physid_isset(bit, phys_cpu_present_map);
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}
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static inline int numaq_apic_id_registered(void)
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{
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return 1;
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}
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static inline void numaq_init_apic_ldr(void)
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{
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/* Already done in NUMA-Q firmware */
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}
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static inline void numaq_setup_apic_routing(void)
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{
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printk(KERN_INFO
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"Enabling APIC mode: NUMA-Q. Using %d I/O APICs\n",
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nr_ioapics);
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}
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/*
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* Skip adding the timer int on secondary nodes, which causes
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* a small but painful rift in the time-space continuum.
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*/
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static inline int numaq_multi_timer_check(int apic, int irq)
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{
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return apic != 0 && irq == 0;
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}
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static inline void numaq_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap)
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{
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/* We don't have a good way to do this yet - hack */
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return physids_promote(0xFUL, retmap);
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}
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/*
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* Supporting over 60 cpus on NUMA-Q requires a locality-dependent
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* cpu to APIC ID relation to properly interact with the intelligent
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* mode of the cluster controller.
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*/
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static inline int numaq_cpu_present_to_apicid(int mps_cpu)
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{
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if (mps_cpu < 60)
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return ((mps_cpu >> 2) << 4) | (1 << (mps_cpu & 0x3));
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else
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return BAD_APICID;
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}
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static inline int numaq_apicid_to_node(int logical_apicid)
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{
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return logical_apicid >> 4;
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}
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static int numaq_numa_cpu_node(int cpu)
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{
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int logical_apicid = early_per_cpu(x86_cpu_to_logical_apicid, cpu);
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if (logical_apicid != BAD_APICID)
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return numaq_apicid_to_node(logical_apicid);
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return NUMA_NO_NODE;
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}
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static void numaq_apicid_to_cpu_present(int logical_apicid, physid_mask_t *retmap)
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{
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int node = numaq_apicid_to_node(logical_apicid);
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int cpu = __ffs(logical_apicid & 0xf);
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physid_set_mask_of_physid(cpu + 4*node, retmap);
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}
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/* Where the IO area was mapped on multiquad, always 0 otherwise */
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void *xquad_portio;
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static inline int numaq_check_phys_apicid_present(int phys_apicid)
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{
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return 1;
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}
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/*
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* We use physical apicids here, not logical, so just return the default
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* physical broadcast to stop people from breaking us
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*/
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static unsigned int numaq_cpu_mask_to_apicid(const struct cpumask *cpumask)
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{
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return 0x0F;
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}
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static inline unsigned int
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numaq_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
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const struct cpumask *andmask)
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{
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return 0x0F;
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}
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/* No NUMA-Q box has a HT CPU, but it can't hurt to use the default code. */
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static inline int numaq_phys_pkg_id(int cpuid_apic, int index_msb)
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{
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return cpuid_apic >> index_msb;
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}
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static int
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numaq_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
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{
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if (strncmp(oem, "IBM NUMA", 8))
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printk(KERN_ERR "Warning! Not a NUMA-Q system!\n");
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else
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found_numaq = 1;
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return found_numaq;
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}
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static int probe_numaq(void)
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{
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/* already know from get_memcfg_numaq() */
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return found_numaq;
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}
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static void numaq_vector_allocation_domain(int cpu, struct cpumask *retmask)
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{
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/* Careful. Some cpus do not strictly honor the set of cpus
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* specified in the interrupt destination when using lowest
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* priority interrupt delivery mode.
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*
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* In particular there was a hyperthreading cpu observed to
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* deliver interrupts to the wrong hyperthread when only one
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* hyperthread was specified in the interrupt desitination.
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*/
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cpumask_clear(retmask);
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cpumask_bits(retmask)[0] = APIC_ALL_CPUS;
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}
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static void numaq_setup_portio_remap(void)
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{
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int num_quads = num_online_nodes();
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if (num_quads <= 1)
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return;
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printk(KERN_INFO
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"Remapping cross-quad port I/O for %d quads\n", num_quads);
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xquad_portio = ioremap(XQUAD_PORTIO_BASE, num_quads*XQUAD_PORTIO_QUAD);
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printk(KERN_INFO
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"xquad_portio vaddr 0x%08lx, len %08lx\n",
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(u_long) xquad_portio, (u_long) num_quads*XQUAD_PORTIO_QUAD);
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}
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/* Use __refdata to keep false positive warning calm. */
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static struct apic __refdata apic_numaq = {
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.name = "NUMAQ",
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.probe = probe_numaq,
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.acpi_madt_oem_check = NULL,
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.apic_id_registered = numaq_apic_id_registered,
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.irq_delivery_mode = dest_LowestPrio,
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/* physical delivery on LOCAL quad: */
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.irq_dest_mode = 0,
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.target_cpus = numaq_target_cpus,
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.disable_esr = 1,
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.dest_logical = APIC_DEST_LOGICAL,
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.check_apicid_used = numaq_check_apicid_used,
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.check_apicid_present = numaq_check_apicid_present,
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.vector_allocation_domain = numaq_vector_allocation_domain,
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.init_apic_ldr = numaq_init_apic_ldr,
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.ioapic_phys_id_map = numaq_ioapic_phys_id_map,
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.setup_apic_routing = numaq_setup_apic_routing,
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.multi_timer_check = numaq_multi_timer_check,
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.cpu_present_to_apicid = numaq_cpu_present_to_apicid,
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.apicid_to_cpu_present = numaq_apicid_to_cpu_present,
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.setup_portio_remap = numaq_setup_portio_remap,
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.check_phys_apicid_present = numaq_check_phys_apicid_present,
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.enable_apic_mode = NULL,
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|
.phys_pkg_id = numaq_phys_pkg_id,
|
|
.mps_oem_check = numaq_mps_oem_check,
|
|
|
|
.get_apic_id = numaq_get_apic_id,
|
|
.set_apic_id = NULL,
|
|
.apic_id_mask = 0x0F << 24,
|
|
|
|
.cpu_mask_to_apicid = numaq_cpu_mask_to_apicid,
|
|
.cpu_mask_to_apicid_and = numaq_cpu_mask_to_apicid_and,
|
|
|
|
.send_IPI_mask = numaq_send_IPI_mask,
|
|
.send_IPI_mask_allbutself = NULL,
|
|
.send_IPI_allbutself = numaq_send_IPI_allbutself,
|
|
.send_IPI_all = numaq_send_IPI_all,
|
|
.send_IPI_self = default_send_IPI_self,
|
|
|
|
.wakeup_secondary_cpu = wakeup_secondary_cpu_via_nmi,
|
|
.trampoline_phys_low = NUMAQ_TRAMPOLINE_PHYS_LOW,
|
|
.trampoline_phys_high = NUMAQ_TRAMPOLINE_PHYS_HIGH,
|
|
|
|
/* We don't do anything here because we use NMI's to boot instead */
|
|
.wait_for_init_deassert = NULL,
|
|
|
|
.smp_callin_clear_local_apic = numaq_smp_callin_clear_local_apic,
|
|
.inquire_remote_apic = NULL,
|
|
|
|
.read = native_apic_mem_read,
|
|
.write = native_apic_mem_write,
|
|
.icr_read = native_apic_icr_read,
|
|
.icr_write = native_apic_icr_write,
|
|
.wait_icr_idle = native_apic_wait_icr_idle,
|
|
.safe_wait_icr_idle = native_safe_apic_wait_icr_idle,
|
|
|
|
.x86_32_early_logical_apicid = noop_x86_32_early_logical_apicid,
|
|
.x86_32_numa_cpu_node = numaq_numa_cpu_node,
|
|
};
|
|
|
|
apic_driver(apic_numaq);
|