ARM: GIC: provide a single initialization function for boot CPU

Provide gic_init() which initializes the GIC distributor and current
CPU's GIC interface for the boot (or single) CPU.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

14 files changed, 46 insertions, 39 deletions

diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index e6388dcd8cf..8eab2f34a7f 100644
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -213,8 +213,8 @@ void __init gic_cascade_irq(unsigned int gic_nr, unsigned int irq)
 	set_irq_chained_handler(irq, gic_handle_cascade_irq);
 }
 
-void __init gic_dist_init(unsigned int gic_nr, void __iomem *base,
-			  unsigned int irq_start)
+static void __init gic_dist_init(unsigned int gic_nr, void __iomem *base,
+	unsigned int irq_start)
 {
 	unsigned int gic_irqs, irq_limit, i;
 	u32 cpumask = 1 << smp_processor_id();
@@ -314,6 +314,13 @@ void __cpuinit gic_cpu_init(unsigned int gic_nr, void __iomem *base)
 	writel(1, base + GIC_CPU_CTRL);
 }
 
+void __init gic_init(unsigned int gic_nr, unsigned int irq_start,
+	void __iomem *dist_base, void __iomem *cpu_base)
+{
+	gic_dist_init(gic_nr, dist_base, irq_start);
+	gic_cpu_init(gic_nr, cpu_base);
+}
+
 #ifdef CONFIG_SMP
 void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
 {
diff --git a/arch/arm/include/asm/hardware/gic.h b/arch/arm/include/asm/hardware/gic.h
index 7f34333bb54..387c6ae5567 100644
--- a/arch/arm/include/asm/hardware/gic.h
+++ b/arch/arm/include/asm/hardware/gic.h
@@ -33,8 +33,8 @@
 #define GIC_DIST_SOFTINT		0xf00
 
 #ifndef __ASSEMBLY__
-void gic_dist_init(unsigned int gic_nr, void __iomem *base, unsigned int irq_start);
 void gic_cpu_init(unsigned int gic_nr, void __iomem *base);
+void gic_init(unsigned int, unsigned int, void __iomem *, void __iomem *);
 void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
 void gic_raise_softirq(const struct cpumask *mask, unsigned int irq);
 #endif
diff --git a/arch/arm/mach-cns3xxx/core.c b/arch/arm/mach-cns3xxx/core.c
index 9ca4d581016..e9c491552ca 100644
--- a/arch/arm/mach-cns3xxx/core.c
+++ b/arch/arm/mach-cns3xxx/core.c
@@ -74,8 +74,8 @@ void __iomem *gic_cpu_base_addr;
 void __init cns3xxx_init_irq(void)
 {
 	gic_cpu_base_addr = __io(CNS3XXX_TC11MP_GIC_CPU_BASE_VIRT);
-	gic_dist_init(0, __io(CNS3XXX_TC11MP_GIC_DIST_BASE_VIRT), 29);
-	gic_cpu_init(0, gic_cpu_base_addr);
+	gic_init(0, 29, __io(CNS3XXX_TC11MP_GIC_DIST_BASE_VIRT),
+		gic_cpu_base_addr);
 }
 
 void cns3xxx_power_off(void)
diff --git a/arch/arm/mach-msm/board-msm8x60.c b/arch/arm/mach-msm/board-msm8x60.c
index 7486a681cc7..aaf8ec8a149 100644
--- a/arch/arm/mach-msm/board-msm8x60.c
+++ b/arch/arm/mach-msm/board-msm8x60.c
@@ -44,9 +44,8 @@ static void __init msm8x60_init_irq(void)
 {
 	unsigned int i;
 
-	gic_dist_init(0, MSM_QGIC_DIST_BASE, GIC_PPI_START);
 	gic_cpu_base_addr = (void *)MSM_QGIC_CPU_BASE;
-	gic_cpu_init(0, MSM_QGIC_CPU_BASE);
+	gic_init(0, GIC_PPI_START, MSM_QGIC_DIST_BASE, gic_cpu_base_addr);
 
 	/* Edge trigger PPIs except AVS_SVICINT and AVS_SVICINTSWDONE */
 	writel(0xFFFFD7FF, MSM_QGIC_DIST_BASE + GIC_DIST_CONFIG + 4);
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index 2f895553e6a..3fd3df7a769 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -35,12 +35,12 @@ void __init gic_init_irq(void)
 	/* Static mapping, never released */
 	gic_dist_base_addr = ioremap(OMAP44XX_GIC_DIST_BASE, SZ_4K);
 	BUG_ON(!gic_dist_base_addr);
-	gic_dist_init(0, gic_dist_base_addr, 29);
 
 	/* Static mapping, never released */
 	gic_cpu_base_addr = ioremap(OMAP44XX_GIC_CPU_BASE, SZ_512);
 	BUG_ON(!gic_cpu_base_addr);
-	gic_cpu_init(0, gic_cpu_base_addr);
+
+	gic_init(0, 29, gic_dist_base_addr, gic_cpu_base_addr);
 }
 
 #ifdef CONFIG_CACHE_L2X0
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index f2697106f80..241bcbc73f6 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -365,20 +365,20 @@ static void __init gic_init_irq(void)
 
 		/* core tile GIC, primary */
 		gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
-		gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
-		gic_cpu_init(0, gic_cpu_base_addr);
+		gic_init(0, 29, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE),
+			 gic_cpu_base_addr);
 
 #ifndef CONFIG_REALVIEW_EB_ARM11MP_REVB
 		/* board GIC, secondary */
-		gic_dist_init(1, __io_address(REALVIEW_EB_GIC_DIST_BASE), 64);
-		gic_cpu_init(1, __io_address(REALVIEW_EB_GIC_CPU_BASE));
+		gic_init(1, 64, __io_address(REALVIEW_EB_GIC_DIST_BASE),
+			 __io_address(REALVIEW_EB_GIC_CPU_BASE));
 		gic_cascade_irq(1, IRQ_EB11MP_EB_IRQ1);
 #endif
 	} else {
 		/* board GIC, primary */
 		gic_cpu_base_addr = __io_address(REALVIEW_EB_GIC_CPU_BASE);
-		gic_dist_init(0, __io_address(REALVIEW_EB_GIC_DIST_BASE), 29);
-		gic_cpu_init(0, gic_cpu_base_addr);
+		gic_init(0, 29, __io_address(REALVIEW_EB_GIC_DIST_BASE),
+			 gic_cpu_base_addr);
 	}
 }
 
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index a4125619d71..8047b198f84 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -305,12 +305,14 @@ static void __init gic_init_irq(void)
 {
 	/* ARM1176 DevChip GIC, primary */
 	gic_cpu_base_addr = __io_address(REALVIEW_DC1176_GIC_CPU_BASE);
-	gic_dist_init(0, __io_address(REALVIEW_DC1176_GIC_DIST_BASE), IRQ_DC1176_GIC_START);
-	gic_cpu_init(0, gic_cpu_base_addr);
+	gic_init(0, IRQ_DC1176_GIC_START,
+		 __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
+		 gic_cpu_base_addr);
 
 	/* board GIC, secondary */
-	gic_dist_init(1, __io_address(REALVIEW_PB1176_GIC_DIST_BASE), IRQ_PB1176_GIC_START);
-	gic_cpu_init(1, __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
+	gic_init(1, IRQ_PB1176_GIC_START,
+		 __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
+		 __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
 	gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
 }
 
diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index 117b95b2ca1..61204265b4e 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -310,12 +310,13 @@ static void __init gic_init_irq(void)
 
 	/* ARM11MPCore test chip GIC, primary */
 	gic_cpu_base_addr = __io_address(REALVIEW_TC11MP_GIC_CPU_BASE);
-	gic_dist_init(0, __io_address(REALVIEW_TC11MP_GIC_DIST_BASE), 29);
-	gic_cpu_init(0, gic_cpu_base_addr);
+	gic_init(0, 29, __io_address(REALVIEW_TC11MP_GIC_DIST_BASE),
+		 gic_cpu_base_addr);
 
 	/* board GIC, secondary */
-	gic_dist_init(1, __io_address(REALVIEW_PB11MP_GIC_DIST_BASE), IRQ_PB11MP_GIC_START);
-	gic_cpu_init(1, __io_address(REALVIEW_PB11MP_GIC_CPU_BASE));
+	gic_init(1, IRQ_PB11MP_GIC_START,
+		 __io_address(REALVIEW_PB11MP_GIC_DIST_BASE),
+		 __io_address(REALVIEW_PB11MP_GIC_CPU_BASE));
 	gic_cascade_irq(1, IRQ_TC11MP_PB_IRQ1);
 }
 
diff --git a/arch/arm/mach-realview/realview_pba8.c b/arch/arm/mach-realview/realview_pba8.c
index 929b8dc12e8..90f492a35d4 100644
--- a/arch/arm/mach-realview/realview_pba8.c
+++ b/arch/arm/mach-realview/realview_pba8.c
@@ -274,8 +274,9 @@ static void __init gic_init_irq(void)
 {
 	/* ARM PB-A8 on-board GIC */
 	gic_cpu_base_addr = __io_address(REALVIEW_PBA8_GIC_CPU_BASE);
-	gic_dist_init(0, __io_address(REALVIEW_PBA8_GIC_DIST_BASE), IRQ_PBA8_GIC_START);
-	gic_cpu_init(0, __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
+	gic_init(0, IRQ_PBA8_GIC_START,
+		 __io_address(REALVIEW_PBA8_GIC_DIST_BASE),
+		 __io_address(REALVIEW_PBA8_GIC_CPU_BASE));
 }
 
 static void __init realview_pba8_timer_init(void)
diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index b9f9e20031a..86f28f725a2 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -314,14 +314,13 @@ static void __init gic_init_irq(void)
 	/* ARM PBX on-board GIC */
 	if (core_tile_pbx11mp() || core_tile_pbxa9mp()) {
 		gic_cpu_base_addr = __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE);
-		gic_dist_init(0, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
-			      29);
-		gic_cpu_init(0, __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
+		gic_init(0, 29, __io_address(REALVIEW_PBX_TILE_GIC_DIST_BASE),
+			 __io_address(REALVIEW_PBX_TILE_GIC_CPU_BASE));
 	} else {
 		gic_cpu_base_addr = __io_address(REALVIEW_PBX_GIC_CPU_BASE);
-		gic_dist_init(0, __io_address(REALVIEW_PBX_GIC_DIST_BASE),
-			      IRQ_PBX_GIC_START);
-		gic_cpu_init(0, __io_address(REALVIEW_PBX_GIC_CPU_BASE));
+		gic_init(0, IRQ_PBX_GIC_START,
+			 __io_address(REALVIEW_PBX_GIC_DIST_BASE),
+			 __io_address(REALVIEW_PBX_GIC_CPU_BASE));
 	}
 }
 
diff --git a/arch/arm/mach-s5pv310/cpu.c b/arch/arm/mach-s5pv310/cpu.c
index 82ce4aa6d61..bce3e91be43 100644
--- a/arch/arm/mach-s5pv310/cpu.c
+++ b/arch/arm/mach-s5pv310/cpu.c
@@ -123,8 +123,7 @@ void __init s5pv310_init_irq(void)
 	int irq;
 
 	gic_cpu_base_addr = S5P_VA_GIC_CPU;
-	gic_dist_init(0, S5P_VA_GIC_DIST, IRQ_LOCALTIMER);
-	gic_cpu_init(0, S5P_VA_GIC_CPU);
+	gic_init(0, IRQ_LOCALTIMER, S5P_VA_GIC_DIST, S5P_VA_GIC_CPU);
 
 	for (irq = 0; irq < MAX_COMBINER_NR; irq++) {
 		combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq),
diff --git a/arch/arm/mach-tegra/irq.c b/arch/arm/mach-tegra/irq.c
index 50a8dfb9a0c..5407de01abf 100644
--- a/arch/arm/mach-tegra/irq.c
+++ b/arch/arm/mach-tegra/irq.c
@@ -94,8 +94,8 @@ void __init tegra_init_irq(void)
 		writel(0, ictlr_to_virt(i) + ICTLR_CPU_IEP_CLASS);
 	}
 
-	gic_dist_init(0, IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE), 29);
-	gic_cpu_init(0, IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x100));
+	gic_init(0, 29, IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE),
+		 IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x100));
 
 	gic = get_irq_chip(29);
 	gic_unmask_irq = gic->unmask;
diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c
index 608a1372b17..7328c017976 100644
--- a/arch/arm/mach-ux500/cpu.c
+++ b/arch/arm/mach-ux500/cpu.c
@@ -61,8 +61,8 @@ void __init ux500_init_devices(void)
 
 void __init ux500_init_irq(void)
 {
-	gic_dist_init(0, __io_address(UX500_GIC_DIST_BASE), 29);
-	gic_cpu_init(0, __io_address(UX500_GIC_CPU_BASE));
+	gic_init(0, 29, __io_address(UX500_GIC_DIST_BASE),
+		 __io_address(UX500_GIC_CPU_BASE));
 
 	/*
 	 * Init clocks here so that they are available for system timer
diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c
index fd25ccd7272..25a3ca6e5a4 100644
--- a/arch/arm/mach-vexpress/ct-ca9x4.c
+++ b/arch/arm/mach-vexpress/ct-ca9x4.c
@@ -65,8 +65,7 @@ void __iomem *gic_cpu_base_addr;
 static void __init ct_ca9x4_init_irq(void)
 {
 	gic_cpu_base_addr = MMIO_P2V(A9_MPCORE_GIC_CPU);
-	gic_dist_init(0, MMIO_P2V(A9_MPCORE_GIC_DIST), 29);
-	gic_cpu_init(0, gic_cpu_base_addr);
+	gic_init(0, 29, MMIO_P2V(A9_MPCORE_GIC_DIST), gic_cpu_base_addr);
 }
 
 #if 0