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Diffstat (limited to 'include/asm-s390/processor.h')
| -rw-r--r-- | include/asm-s390/processor.h | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h deleted file mode 100644 index 4af80af2a88f..000000000000 --- a/include/asm-s390/processor.h +++ /dev/null @@ -1,360 +0,0 @@ -/* - * include/asm-s390/processor.h - * - * S390 version - * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation - * Author(s): Hartmut Penner (hp@de.ibm.com), - * Martin Schwidefsky (schwidefsky@de.ibm.com) - * - * Derived from "include/asm-i386/processor.h" - * Copyright (C) 1994, Linus Torvalds - */ - -#ifndef __ASM_S390_PROCESSOR_H -#define __ASM_S390_PROCESSOR_H - -#include <asm/ptrace.h> - -#ifdef __KERNEL__ -/* - * Default implementation of macro that returns current - * instruction pointer ("program counter"). - */ -#define current_text_addr() ({ void *pc; asm("basr %0,0" : "=a" (pc)); pc; }) - -/* - * CPU type and hardware bug flags. Kept separately for each CPU. - * Members of this structure are referenced in head.S, so think twice - * before touching them. [mj] - */ - -typedef struct -{ - unsigned int version : 8; - unsigned int ident : 24; - unsigned int machine : 16; - unsigned int unused : 16; -} __attribute__ ((packed)) cpuid_t; - -static inline void get_cpu_id(cpuid_t *ptr) -{ - asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr)); -} - -struct cpuinfo_S390 -{ - cpuid_t cpu_id; - __u16 cpu_addr; - __u16 cpu_nr; - unsigned long loops_per_jiffy; - unsigned long *pgd_quick; -#ifdef __s390x__ - unsigned long *pmd_quick; -#endif /* __s390x__ */ - unsigned long *pte_quick; - unsigned long pgtable_cache_sz; -}; - -extern void s390_adjust_jiffies(void); -extern void print_cpu_info(struct cpuinfo_S390 *); -extern int get_cpu_capability(unsigned int *); - -/* - * User space process size: 2GB for 31 bit, 4TB for 64 bit. - */ -#ifndef __s390x__ - -#define TASK_SIZE (1UL << 31) -#define TASK_UNMAPPED_BASE (1UL << 30) - -#else /* __s390x__ */ - -#define TASK_SIZE_OF(tsk) (test_tsk_thread_flag(tsk,TIF_31BIT) ? \ - (1UL << 31) : (1UL << 53)) -#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_31BIT) ? \ - (1UL << 30) : (1UL << 41)) -#define TASK_SIZE TASK_SIZE_OF(current) - -#endif /* __s390x__ */ - -#ifdef __KERNEL__ - -#ifndef __s390x__ -#define STACK_TOP (1UL << 31) -#define STACK_TOP_MAX (1UL << 31) -#else /* __s390x__ */ -#define STACK_TOP (1UL << (test_thread_flag(TIF_31BIT) ? 31:42)) -#define STACK_TOP_MAX (1UL << 42) -#endif /* __s390x__ */ - - -#endif - -#define HAVE_ARCH_PICK_MMAP_LAYOUT - -typedef struct { - __u32 ar4; -} mm_segment_t; - -/* - * Thread structure - */ -struct thread_struct { - s390_fp_regs fp_regs; - unsigned int acrs[NUM_ACRS]; - unsigned long ksp; /* kernel stack pointer */ - mm_segment_t mm_segment; - unsigned long prot_addr; /* address of protection-excep. */ - unsigned int trap_no; - per_struct per_info; - /* Used to give failing instruction back to user for ieee exceptions */ - unsigned long ieee_instruction_pointer; - /* pfault_wait is used to block the process on a pfault event */ - unsigned long pfault_wait; -}; - -typedef struct thread_struct thread_struct; - -/* - * Stack layout of a C stack frame. - */ -#ifndef __PACK_STACK -struct stack_frame { - unsigned long back_chain; - unsigned long empty1[5]; - unsigned long gprs[10]; - unsigned int empty2[8]; -}; -#else -struct stack_frame { - unsigned long empty1[5]; - unsigned int empty2[8]; - unsigned long gprs[10]; - unsigned long back_chain; -}; -#endif - -#define ARCH_MIN_TASKALIGN 8 - -#define INIT_THREAD { \ - .ksp = sizeof(init_stack) + (unsigned long) &init_stack, \ -} - -/* - * Do necessary setup to start up a new thread. - */ -#define start_thread(regs, new_psw, new_stackp) do { \ - set_fs(USER_DS); \ - regs->psw.mask = psw_user_bits; \ - regs->psw.addr = new_psw | PSW_ADDR_AMODE; \ - regs->gprs[15] = new_stackp; \ -} while (0) - -#define start_thread31(regs, new_psw, new_stackp) do { \ - set_fs(USER_DS); \ - regs->psw.mask = psw_user32_bits; \ - regs->psw.addr = new_psw | PSW_ADDR_AMODE; \ - regs->gprs[15] = new_stackp; \ - crst_table_downgrade(current->mm, 1UL << 31); \ -} while (0) - -/* Forward declaration, a strange C thing */ -struct task_struct; -struct mm_struct; -struct seq_file; - -/* Free all resources held by a thread. */ -extern void release_thread(struct task_struct *); -extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); - -/* Prepare to copy thread state - unlazy all lazy status */ -#define prepare_to_copy(tsk) do { } while (0) - -/* - * Return saved PC of a blocked thread. - */ -extern unsigned long thread_saved_pc(struct task_struct *t); - -/* - * Print register of task into buffer. Used in fs/proc/array.c. - */ -extern void task_show_regs(struct seq_file *m, struct task_struct *task); - -extern void show_code(struct pt_regs *regs); - -unsigned long get_wchan(struct task_struct *p); -#define task_pt_regs(tsk) ((struct pt_regs *) \ - (task_stack_page(tsk) + THREAD_SIZE) - 1) -#define KSTK_EIP(tsk) (task_pt_regs(tsk)->psw.addr) -#define KSTK_ESP(tsk) (task_pt_regs(tsk)->gprs[15]) - -/* - * Give up the time slice of the virtual PU. - */ -static inline void cpu_relax(void) -{ - if (MACHINE_HAS_DIAG44) - asm volatile("diag 0,0,68"); - barrier(); -} - -static inline void psw_set_key(unsigned int key) -{ - asm volatile("spka 0(%0)" : : "d" (key)); -} - -/* - * Set PSW to specified value. - */ -static inline void __load_psw(psw_t psw) -{ -#ifndef __s390x__ - asm volatile("lpsw 0(%0)" : : "a" (&psw), "m" (psw) : "cc"); -#else - asm volatile("lpswe 0(%0)" : : "a" (&psw), "m" (psw) : "cc"); -#endif -} - -/* - * Set PSW mask to specified value, while leaving the - * PSW addr pointing to the next instruction. - */ - -static inline void __load_psw_mask (unsigned long mask) -{ - unsigned long addr; - psw_t psw; - - psw.mask = mask; - -#ifndef __s390x__ - asm volatile( - " basr %0,0\n" - "0: ahi %0,1f-0b\n" - " st %0,4(%1)\n" - " lpsw 0(%1)\n" - "1:" - : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc"); -#else /* __s390x__ */ - asm volatile( - " larl %0,1f\n" - " stg %0,8(%1)\n" - " lpswe 0(%1)\n" - "1:" - : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc"); -#endif /* __s390x__ */ -} - -/* - * Function to stop a processor until an interruption occurred - */ -static inline void enabled_wait(void) -{ - __load_psw_mask(PSW_BASE_BITS | PSW_MASK_IO | PSW_MASK_EXT | - PSW_MASK_MCHECK | PSW_MASK_WAIT | PSW_DEFAULT_KEY); -} - -/* - * Function to drop a processor into disabled wait state - */ - -static inline void disabled_wait(unsigned long code) -{ - unsigned long ctl_buf; - psw_t dw_psw; - - dw_psw.mask = PSW_BASE_BITS | PSW_MASK_WAIT; - dw_psw.addr = code; - /* - * Store status and then load disabled wait psw, - * the processor is dead afterwards - */ -#ifndef __s390x__ - asm volatile( - " stctl 0,0,0(%2)\n" - " ni 0(%2),0xef\n" /* switch off protection */ - " lctl 0,0,0(%2)\n" - " stpt 0xd8\n" /* store timer */ - " stckc 0xe0\n" /* store clock comparator */ - " stpx 0x108\n" /* store prefix register */ - " stam 0,15,0x120\n" /* store access registers */ - " std 0,0x160\n" /* store f0 */ - " std 2,0x168\n" /* store f2 */ - " std 4,0x170\n" /* store f4 */ - " std 6,0x178\n" /* store f6 */ - " stm 0,15,0x180\n" /* store general registers */ - " stctl 0,15,0x1c0\n" /* store control registers */ - " oi 0x1c0,0x10\n" /* fake protection bit */ - " lpsw 0(%1)" - : "=m" (ctl_buf) - : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc"); -#else /* __s390x__ */ - asm volatile( - " stctg 0,0,0(%2)\n" - " ni 4(%2),0xef\n" /* switch off protection */ - " lctlg 0,0,0(%2)\n" - " lghi 1,0x1000\n" - " stpt 0x328(1)\n" /* store timer */ - " stckc 0x330(1)\n" /* store clock comparator */ - " stpx 0x318(1)\n" /* store prefix register */ - " stam 0,15,0x340(1)\n"/* store access registers */ - " stfpc 0x31c(1)\n" /* store fpu control */ - " std 0,0x200(1)\n" /* store f0 */ - " std 1,0x208(1)\n" /* store f1 */ - " std 2,0x210(1)\n" /* store f2 */ - " std 3,0x218(1)\n" /* store f3 */ - " std 4,0x220(1)\n" /* store f4 */ - " std 5,0x228(1)\n" /* store f5 */ - " std 6,0x230(1)\n" /* store f6 */ - " std 7,0x238(1)\n" /* store f7 */ - " std 8,0x240(1)\n" /* store f8 */ - " std 9,0x248(1)\n" /* store f9 */ - " std 10,0x250(1)\n" /* store f10 */ - " std 11,0x258(1)\n" /* store f11 */ - " std 12,0x260(1)\n" /* store f12 */ - " std 13,0x268(1)\n" /* store f13 */ - " std 14,0x270(1)\n" /* store f14 */ - " std 15,0x278(1)\n" /* store f15 */ - " stmg 0,15,0x280(1)\n"/* store general registers */ - " stctg 0,15,0x380(1)\n"/* store control registers */ - " oi 0x384(1),0x10\n"/* fake protection bit */ - " lpswe 0(%1)" - : "=m" (ctl_buf) - : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0"); -#endif /* __s390x__ */ -} - -/* - * Basic Machine Check/Program Check Handler. - */ - -extern void s390_base_mcck_handler(void); -extern void s390_base_pgm_handler(void); -extern void s390_base_ext_handler(void); - -extern void (*s390_base_mcck_handler_fn)(void); -extern void (*s390_base_pgm_handler_fn)(void); -extern void (*s390_base_ext_handler_fn)(void); - -#define ARCH_LOW_ADDRESS_LIMIT 0x7fffffffUL - -#endif - -/* - * Helper macro for exception table entries - */ -#ifndef __s390x__ -#define EX_TABLE(_fault,_target) \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long " #_fault "," #_target "\n" \ - ".previous\n" -#else -#define EX_TABLE(_fault,_target) \ - ".section __ex_table,\"a\"\n" \ - " .align 8\n" \ - " .quad " #_fault "," #_target "\n" \ - ".previous\n" -#endif - -#endif /* __ASM_S390_PROCESSOR_H */ |