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irqchip: gic: Perform the gic_secondary_init() call via CPU notifier

Browse source 
All the calls to gic_secondary_init() pass 0 as the first argument.
Since this function is called on each CPU when starting, it can be done
in a platform-independent way via a CPU notifier registered by the GIC
code.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Tested-by: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: David Brown <davidb@codeaurora.org>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Barry Song <baohua.song@csr.com>
This commit is contained in:
Catalin Marinas 2013-01-14 18:05:37 +00:00
parent aec0095653
commit c0114709ed
17 changed files with 21 additions and 131 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
arch/arm/mach-exynos/platsmp.c
View file

@ -20,7 +20,6 @@
#include <linux/jiffies.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/cacheflush.h>
#include <asm/smp_plat.h>
@ -75,13 +74,6 @@ static DEFINE_SPINLOCK(boot_lock);
static void __cpuinit exynos_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
/*
* let the primary processor know we're out of the
* pen, then head off into the C entry point

7
arch/arm/mach-highbank/platsmp.c
View file

@ -17,7 +17,6 @@
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/smp_scu.h>
@ -25,11 +24,6 @@
extern void secondary_startup(void);
static void __cpuinit highbank_secondary_init(unsigned int cpu)
{
gic_secondary_init(0);
}
static int __cpuinit highbank_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
highbank_set_cpu_jump(cpu, secondary_startup);
@ -67,7 +61,6 @@ static void __init highbank_smp_prepare_cpus(unsigned int max_cpus)
struct smp_operations highbank_smp_ops __initdata = {
.smp_init_cpus = highbank_smp_init_cpus,
.smp_prepare_cpus = highbank_smp_prepare_cpus,
.smp_secondary_init = highbank_secondary_init,
.smp_boot_secondary = highbank_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_die = highbank_cpu_die,

12
arch/arm/mach-imx/platsmp.c
View file

@ -12,7 +12,6 @@
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/page.h>
#include <asm/smp_scu.h>
#include <asm/mach/map.h>
@ -52,16 +51,6 @@ void imx_scu_standby_enable(void)
writel_relaxed(val, scu_base);
}
static void __cpuinit imx_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
}
static int __cpuinit imx_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
imx_set_cpu_jump(cpu, v7_secondary_startup);
@ -96,7 +85,6 @@ static void __init imx_smp_prepare_cpus(unsigned int max_cpus)
struct smp_operations imx_smp_ops __initdata = {
.smp_init_cpus = imx_smp_init_cpus,
.smp_prepare_cpus = imx_smp_prepare_cpus,
.smp_secondary_init = imx_secondary_init,
.smp_boot_secondary = imx_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_die = imx_cpu_die,

8
arch/arm/mach-msm/platsmp.c
View file

@ -15,7 +15,6 @@
#include <linux/jiffies.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/cacheflush.h>
#include <asm/cputype.h>
@ -41,13 +40,6 @@ static inline int get_core_count(void)
static void __cpuinit msm_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
/*
* let the primary processor know we're out of the
* pen, then head off into the C entry point

7
arch/arm/mach-omap2/omap-smp.c
View file

@ -66,13 +66,6 @@ static void __cpuinit omap4_secondary_init(unsigned int cpu)
omap_secure_dispatcher(OMAP4_PPA_CPU_ACTRL_SMP_INDEX,
4, 0, 0, 0, 0, 0);
/*
* If any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
/*
* Synchronise with the boot thread.
*/

8
arch/arm/mach-prima2/platsmp.c
View file

@ -11,7 +11,6 @@
#include <linux/delay.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/page.h>
#include <asm/mach/map.h>
#include <asm/smp_plat.h>
@ -48,13 +47,6 @@ void __init sirfsoc_map_scu(void)
static void __cpuinit sirfsoc_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
/*
* let the primary processor know we're out of the
* pen, then head off into the C entry point

7
arch/arm/mach-shmobile/smp-emev2.c
View file

@ -23,7 +23,6 @@
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/irqchip/arm-gic.h>
#include <mach/common.h>
#include <mach/emev2.h>
#include <asm/smp_plat.h>
@ -85,11 +84,6 @@ static int __maybe_unused emev2_cpu_kill(unsigned int cpu)
}
static void __cpuinit emev2_secondary_init(unsigned int cpu)
{
gic_secondary_init(0);
}
static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
cpu = cpu_logical_map(cpu);
@ -124,7 +118,6 @@ static void __init emev2_smp_init_cpus(void)
struct smp_operations emev2_smp_ops __initdata = {
.smp_init_cpus = emev2_smp_init_cpus,
.smp_prepare_cpus = emev2_smp_prepare_cpus,
.smp_secondary_init = emev2_secondary_init,
.smp_boot_secondary = emev2_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_kill = emev2_cpu_kill,

7
arch/arm/mach-shmobile/smp-r8a7779.c
View file

@ -23,7 +23,6 @@
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/irqchip/arm-gic.h>
#include <mach/common.h>
#include <mach/r8a7779.h>
#include <asm/smp_plat.h>
@ -132,11 +131,6 @@ static int __maybe_unused r8a7779_cpu_kill(unsigned int cpu)
}
static void __cpuinit r8a7779_secondary_init(unsigned int cpu)
{
gic_secondary_init(0);
}
static int __cpuinit r8a7779_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
struct r8a7779_pm_ch *ch = NULL;
@ -186,7 +180,6 @@ static void __init r8a7779_smp_init_cpus(void)
struct smp_operations r8a7779_smp_ops __initdata = {
.smp_init_cpus = r8a7779_smp_init_cpus,
.smp_prepare_cpus = r8a7779_smp_prepare_cpus,
.smp_secondary_init = r8a7779_secondary_init,
.smp_boot_secondary = r8a7779_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_kill = r8a7779_cpu_kill,

7
arch/arm/mach-shmobile/smp-sh73a0.c
View file

@ -23,7 +23,6 @@
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/irqchip/arm-gic.h>
#include <mach/common.h>
#include <asm/cacheflush.h>
#include <asm/smp_plat.h>
@ -59,11 +58,6 @@ static unsigned int __init sh73a0_get_core_count(void)
return scu_get_core_count(scu_base);
}
static void __cpuinit sh73a0_secondary_init(unsigned int cpu)
{
gic_secondary_init(0);
}
static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
cpu = cpu_logical_map(cpu);
@ -138,7 +132,6 @@ static void sh73a0_cpu_die(unsigned int cpu)
struct smp_operations sh73a0_smp_ops __initdata = {
.smp_init_cpus = sh73a0_smp_init_cpus,
.smp_prepare_cpus = sh73a0_smp_prepare_cpus,
.smp_secondary_init = sh73a0_secondary_init,
.smp_boot_secondary = sh73a0_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_kill = sh73a0_cpu_kill,

12
arch/arm/mach-socfpga/platsmp.c
View file

@ -22,7 +22,6 @@
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/cacheflush.h>
#include <asm/smp_scu.h>
@ -33,16 +32,6 @@
extern void __iomem *sys_manager_base_addr;
extern void __iomem *rst_manager_base_addr;
static void __cpuinit socfpga_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
}
static int __cpuinit socfpga_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
int trampoline_size = &secondary_trampoline_end - &secondary_trampoline;
@ -109,7 +98,6 @@ static void socfpga_cpu_die(unsigned int cpu)
struct smp_operations socfpga_smp_ops __initdata = {
.smp_init_cpus = socfpga_smp_init_cpus,
.smp_prepare_cpus = socfpga_smp_prepare_cpus,
.smp_secondary_init = socfpga_secondary_init,
.smp_boot_secondary = socfpga_boot_secondary,
#ifdef CONFIG_HOTPLUG_CPU
.cpu_die = socfpga_cpu_die,

8
arch/arm/mach-spear13xx/platsmp.c
View file

@ -15,7 +15,6 @@
#include <linux/jiffies.h>
#include <linux/io.h>
#include <linux/smp.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/cacheflush.h>
#include <asm/smp_scu.h>
#include <mach/spear.h>
@ -27,13 +26,6 @@ static void __iomem *scu_base = IOMEM(VA_SCU_BASE);
static void __cpuinit spear13xx_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
/*
* let the primary processor know we're out of the
* pen, then head off into the C entry point

8
arch/arm/mach-tegra/platsmp.c
View file

@ -18,7 +18,6 @@
#include <linux/jiffies.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/clk/tegra.h>
#include <asm/cacheflush.h>
@ -44,13 +43,6 @@ static cpumask_t tegra_cpu_init_mask;
static void __cpuinit tegra_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
cpumask_set_cpu(cpu, &tegra_cpu_init_mask);
}

8
arch/arm/mach-ux500/platsmp.c
View file

@ -16,7 +16,6 @@
#include <linux/device.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/cacheflush.h>
#include <asm/smp_plat.h>
@ -57,13 +56,6 @@ static DEFINE_SPINLOCK(boot_lock);
static void __cpuinit ux500_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
/*
* let the primary processor know we're out of the
* pen, then head off into the C entry point

8
arch/arm/mach-virt/platsmp.c
View file

@ -21,8 +21,6 @@
#include <linux/smp.h>
#include <linux/of.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/psci.h>
#include <asm/smp_plat.h>
@ -45,14 +43,8 @@ static int __cpuinit virt_boot_secondary(unsigned int cpu,
return -ENODEV;
}
static void __cpuinit virt_secondary_init(unsigned int cpu)
{
gic_secondary_init(0);
}
struct smp_operations __initdata virt_smp_ops = {
.smp_init_cpus = virt_smp_init_cpus,
.smp_prepare_cpus = virt_smp_prepare_cpus,
.smp_secondary_init = virt_secondary_init,
.smp_boot_secondary = virt_boot_secondary,
};

8
arch/arm/plat-versatile/platsmp.c
View file

@ -14,7 +14,6 @@
#include <linux/device.h>
#include <linux/jiffies.h>
#include <linux/smp.h>
#include <linux/irqchip/arm-gic.h>
#include <asm/cacheflush.h>
#include <asm/smp_plat.h>
@ -36,13 +35,6 @@ static DEFINE_SPINLOCK(boot_lock);
void __cpuinit versatile_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_secondary_init(0);
/*
* let the primary processor know we're out of the
* pen, then head off into the C entry point

28
drivers/irqchip/irq-gic.c
View file

@ -28,6 +28,7 @@
#include <linux/module.h>
#include <linux/list.h>
#include <linux/smp.h>
#include <linux/cpu.h>
#include <linux/cpu_pm.h>
#include <linux/cpumask.h>
#include <linux/io.h>
@ -699,6 +700,25 @@ static int gic_irq_domain_xlate(struct irq_domain *d,
return 0;
}
#ifdef CONFIG_SMP
static int __cpuinit gic_secondary_init(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
if (action == CPU_STARTING)
gic_cpu_init(&gic_data[0]);
return NOTIFY_OK;
}
/*
* Notifier for enabling the GIC CPU interface. Set an arbitrarily high
* priority because the GIC needs to be up before the ARM generic timers.
*/
static struct notifier_block __cpuinitdata gic_cpu_notifier = {
.notifier_call = gic_secondary_init,
.priority = 100,
};
#endif
const struct irq_domain_ops gic_irq_domain_ops = {
.map = gic_irq_domain_map,
.xlate = gic_irq_domain_xlate,
@ -789,6 +809,7 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
#ifdef CONFIG_SMP
set_smp_cross_call(gic_raise_softirq);
register_cpu_notifier(&gic_cpu_notifier);
#endif
set_handle_irq(gic_handle_irq);
@ -799,13 +820,6 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
gic_pm_init(gic);
}
void __cpuinit gic_secondary_init(unsigned int gic_nr)
{
BUG_ON(gic_nr >= MAX_GIC_NR);
gic_cpu_init(&gic_data[gic_nr]);
}
#ifdef CONFIG_OF
static int gic_cnt __initdata = 0;

1
include/linux/irqchip/arm-gic.h
View file

@ -65,7 +65,6 @@ extern struct irq_chip gic_arch_extn;
void gic_init_bases(unsigned int, int, void __iomem *, void __iomem *,
u32 offset, struct device_node *);
void gic_secondary_init(unsigned int);
void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
static inline void gic_init(unsigned int nr, int start,