ARM: consolidate SMP cross call implementation

Rather than having each platform class provide a mach/smp.h header for
smp_cross_call(), arrange for them to register the function with the
core ARM SMP code instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/include/asm/smp.h

@@ -14,8 +14,6 @@
 #include <linux/cpumask.h>
 #include <linux/thread_info.h>
 
-#include <mach/smp.h>
-
 #ifndef CONFIG_SMP
 # error "<asm/smp.h> included in non-SMP build"
 #endif
@@ -47,9 +45,9 @@ extern void smp_init_cpus(void);
 
 
 /*
- * Raise an IPI cross call on CPUs in callmap.
+ * Provide a function to raise an IPI cross call on CPUs in callmap.
  */
-extern void smp_cross_call(const struct cpumask *mask, int ipi);
+extern void set_smp_cross_call(void (*)(const struct cpumask *, unsigned int));
 
 /*
  * Boot a secondary CPU, and assign it the specified idle task.

arch/arm/kernel/smp.c

@@ -376,6 +376,13 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 	}
 }
 
+static void (*smp_cross_call)(const struct cpumask *, unsigned int);
+
+void __init set_smp_cross_call(void (*fn)(const struct cpumask *, unsigned int))
+{
+	smp_cross_call = fn;
+}
+
 void arch_send_call_function_ipi_mask(const struct cpumask *mask)
 {
 	smp_cross_call(mask, IPI_CALL_FUNC);

arch/arm/mach-exynos4/platsmp.c

@@ -22,6 +22,7 @@
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
+#include <asm/hardware/gic.h>
 #include <asm/smp_scu.h>
 #include <asm/unified.h>
 
@@ -104,7 +105,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
 	 * the boot monitor to read the system wide flags register,
 	 * and branch to the address found there.
 	 */
-	smp_cross_call(cpumask_of(cpu), 1);
+	gic_raise_softirq(cpumask_of(cpu), 1);
 
 	timeout = jiffies + (1 * HZ);
 	while (time_before(jiffies, timeout)) {
@@ -147,6 +148,8 @@ void __init smp_init_cpus(void)
 
 	for (i = 0; i < ncores; i++)
 		set_cpu_possible(i, true);
+
+	set_smp_cross_call(gic_raise_softirq);
 }
 
 void __init platform_smp_prepare_cpus(unsigned int max_cpus)

arch/arm/mach-msm/platsmp.c

@@ -119,7 +119,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
 	 * the boot monitor to read the system wide flags register,
 	 * and branch to the address found there.
 	 */
-	smp_cross_call(cpumask_of(cpu), 1);
+	gic_raise_softirq(cpumask_of(cpu), 1);
 
 	timeout = jiffies + (1 * HZ);
 	while (time_before(jiffies, timeout)) {
@@ -151,6 +151,8 @@ void __init smp_init_cpus(void)
 
 	for (i = 0; i < NR_CPUS; i++)
 		set_cpu_possible(i, true);
+
+        set_smp_cross_call(gic_raise_softirq);
 }
 
 void __init platform_smp_prepare_cpus(unsigned int max_cpus)

arch/arm/mach-omap2/omap-smp.c

@@ -21,6 +21,7 @@
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
+#include <asm/hardware/gic.h>
 #include <asm/smp_scu.h>
 #include <mach/hardware.h>
 #include <mach/omap4-common.h>
@@ -63,7 +64,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
 	omap_modify_auxcoreboot0(0x200, 0xfffffdff);
 	flush_cache_all();
 	smp_wmb();
-	smp_cross_call(cpumask_of(cpu), 1);
+	gic_raise_softirq(cpumask_of(cpu), 1);
 
 	/*
 	 * Now the secondary core is starting up let it run its
@@ -118,6 +119,8 @@ void __init smp_init_cpus(void)
 
 	for (i = 0; i < ncores; i++)
 		set_cpu_possible(i, true);
+
+	set_smp_cross_call(gic_raise_softirq);
 }
 
 void __init platform_smp_prepare_cpus(unsigned int max_cpus)

arch/arm/mach-realview/platsmp.c

@@ -14,6 +14,7 @@
 #include <linux/io.h>
 
 #include <mach/hardware.h>
+#include <asm/hardware/gic.h>
 #include <asm/mach-types.h>
 #include <asm/smp_scu.h>
 #include <asm/unified.h>
@@ -61,6 +62,8 @@ void __init smp_init_cpus(void)
 
 	for (i = 0; i < ncores; i++)
 		set_cpu_possible(i, true);
+
+	set_smp_cross_call(gic_raise_softirq);
 }
 
 void __init platform_smp_prepare_cpus(unsigned int max_cpus)

arch/arm/mach-shmobile/platsmp.c

@@ -16,6 +16,7 @@
 #include <linux/device.h>
 #include <linux/smp.h>
 #include <linux/io.h>
+#include <asm/hardware/gic.h>
 #include <asm/localtimer.h>
 #include <asm/mach-types.h>
 #include <mach/common.h>
@@ -57,6 +58,8 @@ void __init smp_init_cpus(void)
 
 	for (i = 0; i < ncores; i++)
 		set_cpu_possible(i, true);
+
+	set_smp_cross_call(gic_raise_softirq);
 }
 
 void __init platform_smp_prepare_cpus(unsigned int max_cpus)

arch/arm/mach-tegra/platsmp.c

@@ -20,6 +20,7 @@
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
+#include <asm/hardware/gic.h>
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/smp_scu.h>
@@ -122,6 +123,8 @@ void __init smp_init_cpus(void)
 
 	for (i = 0; i < ncores; i++)
 		cpu_set(i, cpu_possible_map);
+
+	set_smp_cross_call(gic_raise_softirq);
 }
 
 void __init platform_smp_prepare_cpus(unsigned int max_cpus)

arch/arm/mach-ux500/platsmp.c

@@ -18,6 +18,7 @@
 #include <linux/io.h>
 
 #include <asm/cacheflush.h>
+#include <asm/hardware/gic.h>
 #include <asm/smp_scu.h>
 #include <mach/hardware.h>
 #include <mach/setup.h>
@@ -94,7 +95,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
 	 */
 	write_pen_release(cpu);
 
-	smp_cross_call(cpumask_of(cpu), 1);
+	gic_raise_softirq(cpumask_of(cpu), 1);
 
 	timeout = jiffies + (1 * HZ);
 	while (time_before(jiffies, timeout)) {
@@ -162,6 +163,8 @@ void __init smp_init_cpus(void)
 
 	for (i = 0; i < ncores; i++)
 		set_cpu_possible(i, true);
+
+	set_smp_cross_call(gic_raise_softirq);
 }
 
 void __init platform_smp_prepare_cpus(unsigned int max_cpus)

arch/arm/mach-vexpress/ct-ca9x4.c

@@ -210,6 +210,8 @@ static void ct_ca9x4_init_cpu_map(void)
 
 	for (i = 0; i < ncores; ++i)
 		set_cpu_possible(i, true);
+
+	set_smp_cross_call(gic_raise_softirq);
 }
 
 static void ct_ca9x4_smp_enable(unsigned int max_cpus)

arch/arm/plat-versatile/platsmp.c

@@ -16,6 +16,7 @@
 #include <linux/smp.h>
 
 #include <asm/cacheflush.h>
+#include <asm/hardware/gic.h>
 
 /*
  * control for which core is the next to come out of the secondary
@@ -83,7 +84,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
 	 * the boot monitor to read the system wide flags register,
 	 * and branch to the address found there.
 	 */
-	smp_cross_call(cpumask_of(cpu), 1);
+	gic_raise_softirq(cpumask_of(cpu), 1);
 
 	timeout = jiffies + (1 * HZ);
 	while (time_before(jiffies, timeout)) {