diff options
Diffstat (limited to 'arch/s390/power')
-rw-r--r-- | arch/s390/power/Makefile | 7 | ||||
-rw-r--r-- | arch/s390/power/suspend.c | 40 | ||||
-rw-r--r-- | arch/s390/power/swsusp.c | 42 | ||||
-rw-r--r-- | arch/s390/power/swsusp_asm64.S | 184 |
4 files changed, 0 insertions, 273 deletions
diff --git a/arch/s390/power/Makefile b/arch/s390/power/Makefile deleted file mode 100644 index ee2f279beff..00000000000 --- a/arch/s390/power/Makefile +++ /dev/null @@ -1,7 +0,0 @@ -# -# Makefile for s390 PM support -# - -obj-$(CONFIG_HIBERNATION) += suspend.o -obj-$(CONFIG_HIBERNATION) += swsusp.o -obj-$(CONFIG_HIBERNATION) += swsusp_asm64.o diff --git a/arch/s390/power/suspend.c b/arch/s390/power/suspend.c deleted file mode 100644 index b3351eceebb..00000000000 --- a/arch/s390/power/suspend.c +++ /dev/null @@ -1,40 +0,0 @@ -/* - * Suspend support specific for s390. - * - * Copyright IBM Corp. 2009 - * - * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com> - */ - -#include <linux/mm.h> -#include <linux/suspend.h> -#include <linux/reboot.h> -#include <linux/pfn.h> -#include <asm/sections.h> -#include <asm/ipl.h> - -/* - * References to section boundaries - */ -extern const void __nosave_begin, __nosave_end; - -/* - * check if given pfn is in the 'nosave' or in the read only NSS section - */ -int pfn_is_nosave(unsigned long pfn) -{ - unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT; - unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) - >> PAGE_SHIFT; - unsigned long eshared_pfn = PFN_DOWN(__pa(&_eshared)) - 1; - unsigned long stext_pfn = PFN_DOWN(__pa(&_stext)); - - if (pfn >= nosave_begin_pfn && pfn < nosave_end_pfn) - return 1; - if (pfn >= stext_pfn && pfn <= eshared_pfn) { - if (ipl_info.type == IPL_TYPE_NSS) - return 1; - } else if ((tprot(pfn * PAGE_SIZE) && pfn > 0)) - return 1; - return 0; -} diff --git a/arch/s390/power/swsusp.c b/arch/s390/power/swsusp.c deleted file mode 100644 index bd1f5c6b0b8..00000000000 --- a/arch/s390/power/swsusp.c +++ /dev/null @@ -1,42 +0,0 @@ -/* - * Support for suspend and resume on s390 - * - * Copyright IBM Corp. 2009 - * - * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com> - * - */ - -#include <asm/system.h> - -void save_processor_state(void) -{ - /* swsusp_arch_suspend() actually saves all cpu register contents. - * Machine checks must be disabled since swsusp_arch_suspend() stores - * register contents to their lowcore save areas. That's the same - * place where register contents on machine checks would be saved. - * To avoid register corruption disable machine checks. - * We must also disable machine checks in the new psw mask for - * program checks, since swsusp_arch_suspend() may generate program - * checks. Disabling machine checks for all other new psw masks is - * just paranoia. - */ - local_mcck_disable(); - /* Disable lowcore protection */ - __ctl_clear_bit(0,28); - S390_lowcore.external_new_psw.mask &= ~PSW_MASK_MCHECK; - S390_lowcore.svc_new_psw.mask &= ~PSW_MASK_MCHECK; - S390_lowcore.io_new_psw.mask &= ~PSW_MASK_MCHECK; - S390_lowcore.program_new_psw.mask &= ~PSW_MASK_MCHECK; -} - -void restore_processor_state(void) -{ - S390_lowcore.external_new_psw.mask |= PSW_MASK_MCHECK; - S390_lowcore.svc_new_psw.mask |= PSW_MASK_MCHECK; - S390_lowcore.io_new_psw.mask |= PSW_MASK_MCHECK; - S390_lowcore.program_new_psw.mask |= PSW_MASK_MCHECK; - /* Enable lowcore protection */ - __ctl_set_bit(0,28); - local_mcck_enable(); -} diff --git a/arch/s390/power/swsusp_asm64.S b/arch/s390/power/swsusp_asm64.S deleted file mode 100644 index b26df5c5933..00000000000 --- a/arch/s390/power/swsusp_asm64.S +++ /dev/null @@ -1,184 +0,0 @@ -/* - * S390 64-bit swsusp implementation - * - * Copyright IBM Corp. 2009 - * - * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com> - * Michael Holzheu <holzheu@linux.vnet.ibm.com> - */ - -#include <asm/page.h> -#include <asm/ptrace.h> -#include <asm/asm-offsets.h> - -/* - * Save register context in absolute 0 lowcore and call swsusp_save() to - * create in-memory kernel image. The context is saved in the designated - * "store status" memory locations (see POP). - * We return from this function twice. The first time during the suspend to - * disk process. The second time via the swsusp_arch_resume() function - * (see below) in the resume process. - * This function runs with disabled interrupts. - */ - .section .text - .align 2 - .globl swsusp_arch_suspend -swsusp_arch_suspend: - stmg %r6,%r15,__SF_GPRS(%r15) - lgr %r1,%r15 - aghi %r15,-STACK_FRAME_OVERHEAD - stg %r1,__SF_BACKCHAIN(%r15) - - /* Deactivate DAT */ - stnsm __SF_EMPTY(%r15),0xfb - - /* Store prefix register on stack */ - stpx __SF_EMPTY(%r15) - - /* Save prefix register contents for lowcore */ - llgf %r4,__SF_EMPTY(%r15) - - /* Get pointer to save area */ - lghi %r1,0x1000 - - /* Store registers */ - mvc 0x318(4,%r1),__SF_EMPTY(%r15) /* move prefix to lowcore */ - stfpc 0x31c(%r1) /* store fpu control */ - std 0,0x200(%r1) /* store f0 */ - std 1,0x208(%r1) /* store f1 */ - std 2,0x210(%r1) /* store f2 */ - std 3,0x218(%r1) /* store f3 */ - std 4,0x220(%r1) /* store f4 */ - std 5,0x228(%r1) /* store f5 */ - std 6,0x230(%r1) /* store f6 */ - std 7,0x238(%r1) /* store f7 */ - std 8,0x240(%r1) /* store f8 */ - std 9,0x248(%r1) /* store f9 */ - std 10,0x250(%r1) /* store f10 */ - std 11,0x258(%r1) /* store f11 */ - std 12,0x260(%r1) /* store f12 */ - std 13,0x268(%r1) /* store f13 */ - std 14,0x270(%r1) /* store f14 */ - std 15,0x278(%r1) /* store f15 */ - stam %a0,%a15,0x340(%r1) /* store access registers */ - stctg %c0,%c15,0x380(%r1) /* store control registers */ - stmg %r0,%r15,0x280(%r1) /* store general registers */ - - stpt 0x328(%r1) /* store timer */ - stckc 0x330(%r1) /* store clock comparator */ - - /* Activate DAT */ - stosm __SF_EMPTY(%r15),0x04 - - /* Set prefix page to zero */ - xc __SF_EMPTY(4,%r15),__SF_EMPTY(%r15) - spx __SF_EMPTY(%r15) - - lghi %r2,0 - lghi %r3,2*PAGE_SIZE - lghi %r5,2*PAGE_SIZE -1: mvcle %r2,%r4,0 - jo 1b - - /* Save image */ - brasl %r14,swsusp_save - - /* Restore prefix register and return */ - lghi %r1,0x1000 - spx 0x318(%r1) - lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15) - lghi %r2,0 - br %r14 - -/* - * Restore saved memory image to correct place and restore register context. - * Then we return to the function that called swsusp_arch_suspend(). - * swsusp_arch_resume() runs with disabled interrupts. - */ - .globl swsusp_arch_resume -swsusp_arch_resume: - stmg %r6,%r15,__SF_GPRS(%r15) - lgr %r1,%r15 - aghi %r15,-STACK_FRAME_OVERHEAD - stg %r1,__SF_BACKCHAIN(%r15) - -#ifdef CONFIG_SMP - /* Save boot cpu number */ - brasl %r14,smp_get_phys_cpu_id - lgr %r10,%r2 -#endif - /* Deactivate DAT */ - stnsm __SF_EMPTY(%r15),0xfb - - /* Set prefix page to zero */ - xc __SF_EMPTY(4,%r15),__SF_EMPTY(%r15) - spx __SF_EMPTY(%r15) - - /* Restore saved image */ - larl %r1,restore_pblist - lg %r1,0(%r1) - ltgr %r1,%r1 - jz 2f -0: - lg %r2,8(%r1) - lg %r4,0(%r1) - lghi %r3,PAGE_SIZE - lghi %r5,PAGE_SIZE -1: - mvcle %r2,%r4,0 - jo 1b - lg %r1,16(%r1) - ltgr %r1,%r1 - jnz 0b -2: - ptlb /* flush tlb */ - - /* Restore registers */ - lghi %r13,0x1000 /* %r1 = pointer to save arae */ - - spt 0x328(%r13) /* reprogram timer */ - //sckc 0x330(%r13) /* set clock comparator */ - - lctlg %c0,%c15,0x380(%r13) /* load control registers */ - lam %a0,%a15,0x340(%r13) /* load access registers */ - - lfpc 0x31c(%r13) /* load fpu control */ - ld 0,0x200(%r13) /* load f0 */ - ld 1,0x208(%r13) /* load f1 */ - ld 2,0x210(%r13) /* load f2 */ - ld 3,0x218(%r13) /* load f3 */ - ld 4,0x220(%r13) /* load f4 */ - ld 5,0x228(%r13) /* load f5 */ - ld 6,0x230(%r13) /* load f6 */ - ld 7,0x238(%r13) /* load f7 */ - ld 8,0x240(%r13) /* load f8 */ - ld 9,0x248(%r13) /* load f9 */ - ld 10,0x250(%r13) /* load f10 */ - ld 11,0x258(%r13) /* load f11 */ - ld 12,0x260(%r13) /* load f12 */ - ld 13,0x268(%r13) /* load f13 */ - ld 14,0x270(%r13) /* load f14 */ - ld 15,0x278(%r13) /* load f15 */ - - /* Load old stack */ - lg %r15,0x2f8(%r13) - - /* Pointer to save area */ - lghi %r13,0x1000 - -#ifdef CONFIG_SMP - /* Switch CPUs */ - lgr %r2,%r10 /* get cpu id */ - llgf %r3,0x318(%r13) - brasl %r14,smp_switch_boot_cpu_in_resume -#endif - /* Restore prefix register */ - spx 0x318(%r13) - - /* Activate DAT */ - stosm __SF_EMPTY(%r15),0x04 - - /* Return 0 */ - lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15) - lghi %r2,0 - br %r14 |