diff options
author | Marc Zyngier <marc.zyngier@arm.com> | 2011-09-08 12:15:22 (GMT) |
---|---|---|
committer | Arnd Bergmann <arnd@arndb.de> | 2012-09-13 13:35:49 (GMT) |
commit | a17257322f5e6ca376c15908b55423369274fcad (patch) | |
tree | eda0026c1ba985db6e9029d0d79d5f4ea5d86a9e /arch/arm | |
parent | 06915321e7935d2eb778f0a7f333b2603c1404df (diff) | |
download | linux-a17257322f5e6ca376c15908b55423369274fcad.tar.xz |
ARM: SoC: convert Tegra to SMP operations
Convert Tegra to use struct smp_operations to provide its SMP
and CPU hotplug operations.
Tested on Harmony.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/mach-tegra/board-dt-tegra20.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-tegra/board-dt-tegra30.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-tegra/board-harmony.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-tegra/board-paz00.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-tegra/board-trimslice.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-tegra/common.c | 1 | ||||
-rw-r--r-- | arch/arm/mach-tegra/common.h | 3 | ||||
-rw-r--r-- | arch/arm/mach-tegra/hotplug.c | 16 | ||||
-rw-r--r-- | arch/arm/mach-tegra/platsmp.c | 20 |
9 files changed, 31 insertions, 19 deletions
diff --git a/arch/arm/mach-tegra/board-dt-tegra20.c b/arch/arm/mach-tegra/board-dt-tegra20.c index c099963..a30537c 100644 --- a/arch/arm/mach-tegra/board-dt-tegra20.c +++ b/arch/arm/mach-tegra/board-dt-tegra20.c @@ -45,6 +45,7 @@ #include "board-harmony.h" #include "clock.h" #include "devices.h" +#include "common.h" struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL), @@ -166,6 +167,7 @@ static const char *tegra20_dt_board_compat[] = { DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)") .map_io = tegra_map_common_io, + .smp = smp_ops(tegra_smp_ops), .init_early = tegra20_init_early, .init_irq = tegra_dt_init_irq, .handle_irq = gic_handle_irq, diff --git a/arch/arm/mach-tegra/board-dt-tegra30.c b/arch/arm/mach-tegra/board-dt-tegra30.c index 53bf60f..e4a676d 100644 --- a/arch/arm/mach-tegra/board-dt-tegra30.c +++ b/arch/arm/mach-tegra/board-dt-tegra30.c @@ -37,6 +37,7 @@ #include "board.h" #include "clock.h" +#include "common.h" struct of_dev_auxdata tegra30_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("nvidia,tegra20-sdhci", 0x78000000, "sdhci-tegra.0", NULL), @@ -83,6 +84,7 @@ static const char *tegra30_dt_board_compat[] = { }; DT_MACHINE_START(TEGRA30_DT, "NVIDIA Tegra30 (Flattened Device Tree)") + .smp = smp_ops(tegra_smp_ops), .map_io = tegra_map_common_io, .init_early = tegra30_init_early, .init_irq = tegra_dt_init_irq, diff --git a/arch/arm/mach-tegra/board-harmony.c b/arch/arm/mach-tegra/board-harmony.c index e65e837..c1a0c8d 100644 --- a/arch/arm/mach-tegra/board-harmony.c +++ b/arch/arm/mach-tegra/board-harmony.c @@ -45,6 +45,7 @@ #include "clock.h" #include "devices.h" #include "gpio-names.h" +#include "common.h" static struct plat_serial8250_port debug_uart_platform_data[] = { { @@ -185,6 +186,7 @@ static void __init tegra_harmony_init(void) MACHINE_START(HARMONY, "harmony") .atag_offset = 0x100, + .smp = smp_ops(tegra_smp_ops), .fixup = tegra_harmony_fixup, .map_io = tegra_map_common_io, .init_early = tegra20_init_early, diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c index 4b64af5..2b25cc7 100644 --- a/arch/arm/mach-tegra/board-paz00.c +++ b/arch/arm/mach-tegra/board-paz00.c @@ -47,6 +47,7 @@ #include "clock.h" #include "devices.h" #include "gpio-names.h" +#include "common.h" static struct plat_serial8250_port debug_uart_platform_data[] = { { @@ -223,6 +224,7 @@ static void __init tegra_paz00_init(void) MACHINE_START(PAZ00, "Toshiba AC100 / Dynabook AZ") .atag_offset = 0x100, + .smp = smp_ops(tegra_smp_ops), .fixup = tegra_paz00_fixup, .map_io = tegra_map_common_io, .init_early = tegra20_init_early, diff --git a/arch/arm/mach-tegra/board-trimslice.c b/arch/arm/mach-tegra/board-trimslice.c index 776aa95..6a1e0b2 100644 --- a/arch/arm/mach-tegra/board-trimslice.c +++ b/arch/arm/mach-tegra/board-trimslice.c @@ -40,6 +40,7 @@ #include "clock.h" #include "devices.h" #include "gpio-names.h" +#include "common.h" #include "board-trimslice.h" @@ -171,6 +172,7 @@ static void __init tegra_trimslice_init(void) MACHINE_START(TRIMSLICE, "trimslice") .atag_offset = 0x100, + .smp = smp_ops(tegra_smp_ops), .fixup = tegra_trimslice_fixup, .map_io = tegra_map_common_io, .init_early = tegra20_init_early, diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c index 96fef6b..990f275 100644 --- a/arch/arm/mach-tegra/common.c +++ b/arch/arm/mach-tegra/common.c @@ -31,6 +31,7 @@ #include "board.h" #include "clock.h" +#include "common.h" #include "fuse.h" #include "pmc.h" #include "apbio.h" diff --git a/arch/arm/mach-tegra/common.h b/arch/arm/mach-tegra/common.h new file mode 100644 index 0000000..301b35e --- /dev/null +++ b/arch/arm/mach-tegra/common.h @@ -0,0 +1,3 @@ +extern struct smp_operations tegra_smp_ops; + +extern void tegra_cpu_die(unsigned int cpu); diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c index d8dc9dd..2440705 100644 --- a/arch/arm/mach-tegra/hotplug.c +++ b/arch/arm/mach-tegra/hotplug.c @@ -87,17 +87,12 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious) } } -int platform_cpu_kill(unsigned int cpu) -{ - return 1; -} - /* * platform-specific code to shutdown a CPU * * Called with IRQs disabled */ -void platform_cpu_die(unsigned int cpu) +void __ref tegra_cpu_die(unsigned int cpu) { int spurious = 0; @@ -116,12 +111,3 @@ void platform_cpu_die(unsigned int cpu) if (spurious) pr_warn("CPU%u: %u spurious wakeup calls\n", cpu, spurious); } - -int platform_cpu_disable(unsigned int cpu) -{ - /* - * we don't allow CPU 0 to be shutdown (it is still too special - * e.g. clock tick interrupts) - */ - return cpu == 0 ? -EPERM : 0; -} diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c index 1a208db..24bfb653 100644 --- a/arch/arm/mach-tegra/platsmp.c +++ b/arch/arm/mach-tegra/platsmp.c @@ -32,6 +32,8 @@ #include "flowctrl.h" #include "reset.h" +#include "common.h" + extern void tegra_secondary_startup(void); static void __iomem *scu_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE); @@ -50,7 +52,7 @@ static void __iomem *scu_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE); #define CPU_CLOCK(cpu) (0x1<<(8+cpu)) #define CPU_RESET(cpu) (0x1111ul<<(cpu)) -void __cpuinit platform_secondary_init(unsigned int cpu) +static void __cpuinit tegra_secondary_init(unsigned int cpu) { /* * if any interrupts are already enabled for the primary @@ -117,7 +119,7 @@ static int tegra30_power_up_cpu(unsigned int cpu) return 0; } -int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) +static int __cpuinit tegra_boot_secondary(unsigned int cpu, struct task_struct *idle) { int status; @@ -165,7 +167,7 @@ done: * Initialise the CPU possible map early - this describes the CPUs * which may be present or become present in the system. */ -void __init smp_init_cpus(void) +static void __init tegra_smp_init_cpus(void) { unsigned int i, ncores = scu_get_core_count(scu_base); @@ -181,8 +183,18 @@ void __init smp_init_cpus(void) set_smp_cross_call(gic_raise_softirq); } -void __init platform_smp_prepare_cpus(unsigned int max_cpus) +static void __init tegra_smp_prepare_cpus(unsigned int max_cpus) { tegra_cpu_reset_handler_init(); scu_enable(scu_base); } + +struct smp_operations tegra_smp_ops __initdata = { + .smp_init_cpus = tegra_smp_init_cpus, + .smp_prepare_cpus = tegra_smp_prepare_cpus, + .smp_secondary_init = tegra_secondary_init, + .smp_boot_secondary = tegra_boot_secondary, +#ifdef CONFIG_HOTPLUG_CPU + .cpu_die = tegra_cpu_die, +#endif +}; |