On 2014-1-18 0:56, Sudeep Holla wrote: > On 17/01/14 12:24, Hanjun Guo wrote: >> Introduce arm_core.c and its related head file, after this patch, >> we can get ACPI tables from firmware on ARM64 now. >> >> Signed-off-by: Al Stone <al.stone@xxxxxxxxxx> >> Signed-off-by: Graeme Gregory <graeme.gregory@xxxxxxxxxx> >> Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> >> --- >> arch/arm64/include/asm/acpi.h | 57 +++++++++++ >> arch/arm64/kernel/setup.c | 6 ++ >> drivers/acpi/Makefile | 2 + >> drivers/acpi/plat/Makefile | 1 + >> drivers/acpi/plat/arm-core.c | 209 +++++++++++++++++++++++++++++++++++++++++ >> 5 files changed, 275 insertions(+) >> create mode 100644 drivers/acpi/plat/Makefile >> create mode 100644 drivers/acpi/plat/arm-core.c >> >> diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h >> index cf19dc6..908d71b 100644 >> --- a/arch/arm64/include/asm/acpi.h >> +++ b/arch/arm64/include/asm/acpi.h >> @@ -19,6 +19,43 @@ >> #ifndef _ASM_ARM64_ACPI_H >> #define _ASM_ARM64_ACPI_H >> >> +#include <asm/cacheflush.h> >> + >> +#include <linux/init.h> >> + >> +#define COMPILER_DEPENDENT_INT64 s64 >> +#define COMPILER_DEPENDENT_UINT64 u64 >> + >> +/* >> + * Calling conventions: >> + * >> + * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads) >> + * ACPI_EXTERNAL_XFACE - External ACPI interfaces >> + * ACPI_INTERNAL_XFACE - Internal ACPI interfaces >> + * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces >> + */ >> +#define ACPI_SYSTEM_XFACE >> +#define ACPI_EXTERNAL_XFACE >> +#define ACPI_INTERNAL_XFACE >> +#define ACPI_INTERNAL_VAR_XFACE >> + >> +/* Asm macros */ >> +#define ACPI_FLUSH_CPU_CACHE() flush_cache_all() >> + >> +/* Basic configuration for ACPI */ >> +#ifdef CONFIG_ACPI >> +extern int acpi_disabled; >> +extern int acpi_noirq; >> +extern int acpi_pci_disabled; >> +extern int acpi_strict; >> + >> +static inline void disable_acpi(void) >> +{ >> + acpi_disabled = 1; >> + acpi_pci_disabled = 1; >> + acpi_noirq = 1; >> +} >> + >> static inline bool arch_has_acpi_pdc(void) >> { >> return false; /* always false for now */ >> @@ -29,4 +66,24 @@ static inline void arch_acpi_set_pdc_bits(u32 *buf) >> return; >> } >> >> +static inline void acpi_noirq_set(void) { acpi_noirq = 1; } >> +static inline void acpi_disable_pci(void) >> +{ >> + acpi_pci_disabled = 1; >> + acpi_noirq_set(); >> +} >> + >> +/* FIXME: this function should be moved to topology.h when it's ready */ >> +void arch_fix_phys_package_id(int num, u32 slot); >> + >> +/* temperally define -1 to make acpi core compilerable */ >> +#define cpu_physical_id(cpu) -1 >> + > > I assume `cpu` here is logical cpu id in which case you can define it to be same > as cpu_logical_map ? Yes. it is about the hardware id of CPU and may refer to MPIDR in ARM/ARM64. Thanks Hanjun -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html