0bc0ffd5f0
include/asm-ppc64/iSeries/LparData.h just included a whole lot of other files to declare variables that would be better declared in those other files. So, remove it. This will reduce that number of things needed to be included in most cases to access the relevant variables. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
150 lines
3.3 KiB
C
150 lines
3.3 KiB
C
/*
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* SMP support for iSeries machines.
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*
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* Dave Engebretsen, Peter Bergner, and
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* Mike Corrigan {engebret|bergner|mikec}@us.ibm.com
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*
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* Plus various changes from other IBM teams...
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#undef DEBUG
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/sched.h>
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#include <linux/smp.h>
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#include <linux/smp_lock.h>
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#include <linux/interrupt.h>
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#include <linux/kernel_stat.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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#include <linux/cache.h>
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#include <linux/err.h>
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#include <linux/sysdev.h>
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#include <linux/cpu.h>
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#include <asm/ptrace.h>
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#include <asm/atomic.h>
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#include <asm/irq.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/io.h>
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#include <asm/smp.h>
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#include <asm/paca.h>
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#include <asm/iSeries/HvCall.h>
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#include <asm/iSeries/HvCallCfg.h>
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#include <asm/time.h>
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#include <asm/ppcdebug.h>
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#include <asm/machdep.h>
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#include <asm/cputable.h>
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#include <asm/system.h>
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static unsigned long iSeries_smp_message[NR_CPUS];
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void iSeries_smp_message_recv( struct pt_regs * regs )
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{
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int cpu = smp_processor_id();
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int msg;
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if ( num_online_cpus() < 2 )
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return;
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for ( msg = 0; msg < 4; ++msg )
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if ( test_and_clear_bit( msg, &iSeries_smp_message[cpu] ) )
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smp_message_recv( msg, regs );
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}
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static inline void smp_iSeries_do_message(int cpu, int msg)
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{
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set_bit(msg, &iSeries_smp_message[cpu]);
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HvCall_sendIPI(&(paca[cpu]));
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}
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static void smp_iSeries_message_pass(int target, int msg)
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{
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int i;
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if (target < NR_CPUS)
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smp_iSeries_do_message(target, msg);
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else {
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for_each_online_cpu(i) {
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if (target == MSG_ALL_BUT_SELF
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&& i == smp_processor_id())
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continue;
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smp_iSeries_do_message(i, msg);
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}
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}
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}
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static int smp_iSeries_numProcs(void)
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{
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unsigned np, i;
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np = 0;
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for (i=0; i < NR_CPUS; ++i) {
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if (paca[i].lppaca.dyn_proc_status < 2) {
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cpu_set(i, cpu_possible_map);
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cpu_set(i, cpu_present_map);
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cpu_set(i, cpu_sibling_map[i]);
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++np;
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}
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}
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return np;
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}
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static int smp_iSeries_probe(void)
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{
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unsigned i;
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unsigned np = 0;
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for (i=0; i < NR_CPUS; ++i) {
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if (paca[i].lppaca.dyn_proc_status < 2) {
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/*paca[i].active = 1;*/
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++np;
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}
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}
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return np;
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}
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static void smp_iSeries_kick_cpu(int nr)
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{
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BUG_ON(nr < 0 || nr >= NR_CPUS);
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/* Verify that our partition has a processor nr */
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if (paca[nr].lppaca.dyn_proc_status >= 2)
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return;
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/* The processor is currently spinning, waiting
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* for the cpu_start field to become non-zero
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* After we set cpu_start, the processor will
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* continue on to secondary_start in iSeries_head.S
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*/
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paca[nr].cpu_start = 1;
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}
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static void __devinit smp_iSeries_setup_cpu(int nr)
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{
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}
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static struct smp_ops_t iSeries_smp_ops = {
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.message_pass = smp_iSeries_message_pass,
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.probe = smp_iSeries_probe,
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.kick_cpu = smp_iSeries_kick_cpu,
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.setup_cpu = smp_iSeries_setup_cpu,
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};
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/* This is called very early. */
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void __init smp_init_iSeries(void)
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{
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smp_ops = &iSeries_smp_ops;
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systemcfg->processorCount = smp_iSeries_numProcs();
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}
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