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powerpc/pseries: Remove MPIC from pseries smp

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MPIC was only used by Power3 which is now unsupported, so remove MPIC
code. XICS is now the only supported interrupt controller for
pSeries so do some cleanups too.

Signed-off-by: Rashmica Gupta <rashmicy@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Rashmica Gupta 2016-05-30 16:18:12 +10:00 committed by Michael Ellerman
parent e7da5dac4e
commit 86425bedd5
3 changed files with 8 additions and 31 deletions
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6
arch/powerpc/platforms/pseries/pseries.h
View file

@ -31,11 +31,9 @@ extern int pSeries_system_reset_exception(struct pt_regs *regs);
extern int pSeries_machine_check_exception(struct pt_regs *regs);
#ifdef CONFIG_SMP
extern void smp_init_pseries_mpic(void);
extern void smp_init_pseries_xics(void);
extern void smp_init_pseries(void);
#else
static inline void smp_init_pseries_mpic(void) { };
static inline void smp_init_pseries_xics(void) { };
static inline void smp_init_pseries(void) { };
#endif
#ifdef CONFIG_KEXEC

2
arch/powerpc/platforms/pseries/setup.c
View file

@ -437,7 +437,7 @@ static void __init pSeries_setup_arch(void)
/* Discover PIC type and setup ppc_md accordingly */
setup_kexec_cpu_down_xics();
smp_init_pseries_xics();
smp_init_pseries();
/* openpic global configuration register (64-bit format). */

31
arch/powerpc/platforms/pseries/smp.c
View file

@ -38,7 +38,6 @@
#include <asm/cputable.h>
#include <asm/firmware.h>
#include <asm/rtas.h>
#include <asm/mpic.h>
#include <asm/vdso_datapage.h>
#include <asm/cputhreads.h>
#include <asm/xics.h>
@ -140,7 +139,7 @@ static inline int smp_startup_cpu(unsigned int lcpu)
return 1;
}
static void smp_xics_setup_cpu(int cpu)
static void smp_setup_cpu(int cpu)
{
if (cpu != boot_cpuid)
xics_setup_cpu();
@ -207,28 +206,22 @@ static __init void pSeries_smp_probe(void)
}
}
static struct smp_ops_t pSeries_mpic_smp_ops = {
.message_pass = smp_mpic_message_pass,
.probe = smp_mpic_probe,
.kick_cpu = smp_pSeries_kick_cpu,
.setup_cpu = smp_mpic_setup_cpu,
};
static struct smp_ops_t pSeries_xics_smp_ops = {
static struct smp_ops_t pseries_smp_ops = {
.message_pass = NULL, /* Use smp_muxed_ipi_message_pass */
.cause_ipi = NULL, /* Filled at runtime by pSeries_smp_probe() */
.probe = pSeries_smp_probe,
.kick_cpu = smp_pSeries_kick_cpu,
.setup_cpu = smp_xics_setup_cpu,
.setup_cpu = smp_setup_cpu,
.cpu_bootable = smp_generic_cpu_bootable,
};
/* This is called very early */
static void __init smp_init_pseries(void)
void __init smp_init_pseries(void)
{
int i;
pr_debug(" -> smp_init_pSeries()\n");
smp_ops = &pseries_smp_ops;
alloc_bootmem_cpumask_var(&of_spin_mask);
@ -258,17 +251,3 @@ static void __init smp_init_pseries(void)
pr_debug(" <- smp_init_pSeries()\n");
}
void __init smp_init_pseries_mpic(void)
{
smp_ops = &pSeries_mpic_smp_ops;
smp_init_pseries();
}
void __init smp_init_pseries_xics(void)
{
smp_ops = &pSeries_xics_smp_ops;
smp_init_pseries();
}