diff options
Diffstat (limited to 'arch/powerpc/include/asm/processor.h')
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 108 |
1 files changed, 10 insertions, 98 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index ee58526cb6c2..3351bcf42f2d 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -40,7 +40,7 @@ #ifndef __ASSEMBLY__ #include <linux/types.h> -#include <asm/thread_info.h> +#include <linux/thread_info.h> #include <asm/ptrace.h> #include <asm/hw_breakpoint.h> @@ -77,105 +77,15 @@ extern int _chrp_type; #ifdef __KERNEL__ -struct task_struct; -void start_thread(struct pt_regs *regs, unsigned long fdptr, unsigned long sp); -void release_thread(struct task_struct *); - -#ifdef CONFIG_PPC32 - -#if CONFIG_TASK_SIZE > CONFIG_KERNEL_START -#error User TASK_SIZE overlaps with KERNEL_START address -#endif -#define TASK_SIZE (CONFIG_TASK_SIZE) - -/* This decides where the kernel will search for a free chunk of vm - * space during mmap's. - */ -#define TASK_UNMAPPED_BASE (TASK_SIZE / 8 * 3) -#endif - #ifdef CONFIG_PPC64 -/* - * 64-bit user address space can have multiple limits - * For now supported values are: - */ -#define TASK_SIZE_64TB (0x0000400000000000UL) -#define TASK_SIZE_128TB (0x0000800000000000UL) -#define TASK_SIZE_512TB (0x0002000000000000UL) -#define TASK_SIZE_1PB (0x0004000000000000UL) -#define TASK_SIZE_2PB (0x0008000000000000UL) -/* - * With 52 bits in the address we can support - * upto 4PB of range. - */ -#define TASK_SIZE_4PB (0x0010000000000000UL) - -/* - * For now 512TB is only supported with book3s and 64K linux page size. - */ -#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_PPC_64K_PAGES) -/* - * Max value currently used: - */ -#define TASK_SIZE_USER64 TASK_SIZE_4PB -#define DEFAULT_MAP_WINDOW_USER64 TASK_SIZE_128TB -#define TASK_CONTEXT_SIZE TASK_SIZE_512TB +#include <asm/task_size_64.h> #else -#define TASK_SIZE_USER64 TASK_SIZE_64TB -#define DEFAULT_MAP_WINDOW_USER64 TASK_SIZE_64TB -/* - * We don't need to allocate extended context ids for 4K page size, because - * we limit the max effective address on this config to 64TB. - */ -#define TASK_CONTEXT_SIZE TASK_SIZE_64TB +#include <asm/task_size_32.h> #endif -/* - * 32-bit user address space is 4GB - 1 page - * (this 1 page is needed so referencing of 0xFFFFFFFF generates EFAULT - */ -#define TASK_SIZE_USER32 (0x0000000100000000UL - (1*PAGE_SIZE)) - -#define TASK_SIZE_OF(tsk) (test_tsk_thread_flag(tsk, TIF_32BIT) ? \ - TASK_SIZE_USER32 : TASK_SIZE_USER64) -#define TASK_SIZE TASK_SIZE_OF(current) -/* This decides where the kernel will search for a free chunk of vm - * space during mmap's. - */ -#define TASK_UNMAPPED_BASE_USER32 (PAGE_ALIGN(TASK_SIZE_USER32 / 4)) -#define TASK_UNMAPPED_BASE_USER64 (PAGE_ALIGN(DEFAULT_MAP_WINDOW_USER64 / 4)) - -#define TASK_UNMAPPED_BASE ((is_32bit_task()) ? \ - TASK_UNMAPPED_BASE_USER32 : TASK_UNMAPPED_BASE_USER64 ) -#endif - -/* - * Initial task size value for user applications. For book3s 64 we start - * with 128TB and conditionally enable upto 512TB - */ -#ifdef CONFIG_PPC_BOOK3S_64 -#define DEFAULT_MAP_WINDOW ((is_32bit_task()) ? \ - TASK_SIZE_USER32 : DEFAULT_MAP_WINDOW_USER64) -#else -#define DEFAULT_MAP_WINDOW TASK_SIZE -#endif - -#ifdef __powerpc64__ - -#define STACK_TOP_USER64 DEFAULT_MAP_WINDOW_USER64 -#define STACK_TOP_USER32 TASK_SIZE_USER32 - -#define STACK_TOP (is_32bit_task() ? \ - STACK_TOP_USER32 : STACK_TOP_USER64) - -#define STACK_TOP_MAX TASK_SIZE_USER64 - -#else /* __powerpc64__ */ - -#define STACK_TOP TASK_SIZE -#define STACK_TOP_MAX STACK_TOP - -#endif /* __powerpc64__ */ +struct task_struct; +void start_thread(struct pt_regs *regs, unsigned long fdptr, unsigned long sp); +void release_thread(struct task_struct *); typedef struct { unsigned long seg; @@ -250,6 +160,9 @@ struct thread_struct { #ifdef CONFIG_PPC32 void *pgdir; /* root of page-table tree */ unsigned long ksp_limit; /* if ksp <= ksp_limit stack overflow */ +#ifdef CONFIG_PPC_RTAS + unsigned long rtas_sp; /* stack pointer for when in RTAS */ +#endif #endif /* Debug Registers */ struct debug_reg debug; @@ -357,8 +270,7 @@ struct thread_struct { #define ARCH_MIN_TASKALIGN 16 #define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack) -#define INIT_SP_LIMIT \ - (_ALIGN_UP(sizeof(init_thread_info), 16) + (unsigned long) &init_stack) +#define INIT_SP_LIMIT ((unsigned long)&init_stack) #ifdef CONFIG_SPE #define SPEFSCR_INIT \ |