powerpc/pseries: Remove MPIC from pseries smp

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>

diff --git a/arch/powerpc/platforms/pseries/pseries.h b/arch/powerpc/platforms/pseries/pseries.h
index 7aa83f00ac620d2554a04363f3dc2500c09ad211..edeaec74b656ef8bc7e2612948ac4c90d1cfe4ea 100644 (file)
--- a/arch/powerpc/platforms/pseries/pseries.h
+++ b/arch/powerpc/platforms/pseries/pseries.h
@@ -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

diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 39f21fb3c609a872fe6330d6e050709566029f53..4b94a1e75bcfd237685b613bdc2eaab0c064c5db 100644 (file)
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -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). */

diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 6932ea803e33594fb0e89e21bed1edfe255aef08..f6f83aeccaaaceafae91940cec0ae513d8d07b62 100644 (file)
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -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 @@ out:
        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();
-}