diff options
Diffstat (limited to 'arch/powerpc/platforms/iseries/smp.c')
| -rw-r--r-- | arch/powerpc/platforms/iseries/smp.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/arch/powerpc/platforms/iseries/smp.c b/arch/powerpc/platforms/iseries/smp.c deleted file mode 100644 index 6c6029914db..00000000000 --- a/arch/powerpc/platforms/iseries/smp.c +++ /dev/null @@ -1,120 +0,0 @@ -/* - * SMP support for iSeries machines. - * - * Dave Engebretsen, Peter Bergner, and - * Mike Corrigan {engebret|bergner|mikec}@us.ibm.com - * - * Plus various changes from other IBM teams... - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#undef DEBUG - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/smp.h> -#include <linux/interrupt.h> -#include <linux/kernel_stat.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/cache.h> -#include <linux/err.h> -#include <linux/sysdev.h> -#include <linux/cpu.h> - -#include <asm/ptrace.h> -#include <asm/atomic.h> -#include <asm/irq.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/io.h> -#include <asm/smp.h> -#include <asm/paca.h> -#include <asm/iseries/hv_call.h> -#include <asm/time.h> -#include <asm/machdep.h> -#include <asm/cputable.h> -#include <asm/system.h> - -#include "smp.h" - -static unsigned long iSeries_smp_message[NR_CPUS]; - -void iSeries_smp_message_recv(void) -{ - int cpu = smp_processor_id(); - int msg; - - if (num_online_cpus() < 2) - return; - - for (msg = 0; msg < 4; msg++) - if (test_and_clear_bit(msg, &iSeries_smp_message[cpu])) - smp_message_recv(msg); -} - -static inline void smp_iSeries_do_message(int cpu, int msg) -{ - set_bit(msg, &iSeries_smp_message[cpu]); - HvCall_sendIPI(&(paca[cpu])); -} - -static void smp_iSeries_message_pass(int target, int msg) -{ - int i; - - if (target < NR_CPUS) - smp_iSeries_do_message(target, msg); - else { - for_each_online_cpu(i) { - if ((target == MSG_ALL_BUT_SELF) && - (i == smp_processor_id())) - continue; - smp_iSeries_do_message(i, msg); - } - } -} - -static int smp_iSeries_probe(void) -{ - return cpumask_weight(cpu_possible_mask); -} - -static void smp_iSeries_kick_cpu(int nr) -{ - BUG_ON((nr < 0) || (nr >= NR_CPUS)); - - /* Verify that our partition has a processor nr */ - if (lppaca_of(nr).dyn_proc_status >= 2) - return; - - /* The processor is currently spinning, waiting - * for the cpu_start field to become non-zero - * After we set cpu_start, the processor will - * continue on to secondary_start in iSeries_head.S - */ - paca[nr].cpu_start = 1; -} - -static void __devinit smp_iSeries_setup_cpu(int nr) -{ -} - -static struct smp_ops_t iSeries_smp_ops = { - .message_pass = smp_iSeries_message_pass, - .probe = smp_iSeries_probe, - .kick_cpu = smp_iSeries_kick_cpu, - .setup_cpu = smp_iSeries_setup_cpu, -}; - -/* This is called very early. */ -void __init smp_init_iSeries(void) -{ - smp_ops = &iSeries_smp_ops; -} |
