diff options
Diffstat (limited to 'arch/powerpc/kernel')
25 files changed, 356 insertions, 595 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 8b133afbdc20..7af23c43fd4b 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -38,7 +38,6 @@ obj-$(CONFIG_6xx) += idle_6xx.o l2cr_6xx.o cpu_setup_6xx.o obj-$(CONFIG_TAU) += tau_6xx.o obj32-$(CONFIG_SOFTWARE_SUSPEND) += swsusp_32.o obj32-$(CONFIG_MODULES) += module_32.o -obj-$(CONFIG_E500) += perfmon_fsl_booke.o ifeq ($(CONFIG_PPC_MERGE),y) diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c index 995fcef156fd..93f21aaf7c8e 100644 --- a/arch/powerpc/kernel/btext.c +++ b/arch/powerpc/kernel/btext.c @@ -182,7 +182,7 @@ int btext_initialize(struct device_node *np) prop = get_property(np, "linux,bootx-linebytes", NULL); if (prop == NULL) prop = get_property(np, "linebytes", NULL); - if (prop) + if (prop && *prop != 0xffffffffu) pitch = *prop; if (pitch == 1) pitch = 0x1000; diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 47a613cdd775..bfd499ee3753 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -18,6 +18,7 @@ #include <asm/oprofile_impl.h> #include <asm/cputable.h> +#include <asm/prom.h> /* for PTRRELOC on ARCH=ppc */ struct cpu_spec* cur_cpu_spec = NULL; EXPORT_SYMBOL(cur_cpu_spec); @@ -73,7 +74,7 @@ extern void __restore_cpu_ppc970(void); #define PPC_FEATURE_SPE_COMP 0 #endif -struct cpu_spec cpu_specs[] = { +static struct cpu_spec cpu_specs[] = { #ifdef CONFIG_PPC64 { /* Power3 */ .pvr_mask = 0xffff0000, @@ -227,6 +228,21 @@ struct cpu_spec cpu_specs[] = { .oprofile_type = PPC_OPROFILE_POWER4, .platform = "ppc970", }, + { /* PPC970GX */ + .pvr_mask = 0xffff0000, + .pvr_value = 0x00450000, + .cpu_name = "PPC970GX", + .cpu_features = CPU_FTRS_PPC970, + .cpu_user_features = COMMON_USER_POWER4 | + PPC_FEATURE_HAS_ALTIVEC_COMP, + .icache_bsize = 128, + .dcache_bsize = 128, + .num_pmcs = 8, + .cpu_setup = __setup_cpu_ppc970, + .oprofile_cpu_type = "ppc64/970", + .oprofile_type = PPC_OPROFILE_POWER4, + .platform = "ppc970", + }, { /* Power5 GR */ .pvr_mask = 0xffff0000, .pvr_value = 0x003a0000, @@ -268,7 +284,7 @@ struct cpu_spec cpu_specs[] = { .cpu_user_features = COMMON_USER_POWER6, .icache_bsize = 128, .dcache_bsize = 128, - .num_pmcs = 8, + .num_pmcs = 6, .oprofile_cpu_type = "ppc64/power6", .oprofile_type = PPC_OPROFILE_POWER4, .oprofile_mmcra_sihv = POWER6_MMCRA_SIHV, @@ -1152,3 +1168,71 @@ struct cpu_spec cpu_specs[] = { #endif /* !CLASSIC_PPC */ #endif /* CONFIG_PPC32 */ }; + +struct cpu_spec *identify_cpu(unsigned long offset) +{ + struct cpu_spec *s = cpu_specs; + struct cpu_spec **cur = &cur_cpu_spec; + unsigned int pvr = mfspr(SPRN_PVR); + int i; + + s = PTRRELOC(s); + cur = PTRRELOC(cur); + + if (*cur != NULL) + return PTRRELOC(*cur); + + for (i = 0; i < ARRAY_SIZE(cpu_specs); i++,s++) + if ((pvr & s->pvr_mask) == s->pvr_value) { + *cur = cpu_specs + i; +#ifdef CONFIG_PPC64 + /* ppc64 expects identify_cpu to also call setup_cpu + * for that processor. I will consolidate that at a + * later time, for now, just use our friend #ifdef. + * we also don't need to PTRRELOC the function pointer + * on ppc64 as we are running at 0 in real mode. + */ + if (s->cpu_setup) { + s->cpu_setup(offset, s); + } +#endif /* CONFIG_PPC64 */ + return s; + } + BUG(); + return NULL; +} + +void do_feature_fixups(unsigned long value, void *fixup_start, void *fixup_end) +{ + struct fixup_entry { + unsigned long mask; + unsigned long value; + long start_off; + long end_off; + } *fcur, *fend; + + fcur = fixup_start; + fend = fixup_end; + + for (; fcur < fend; fcur++) { + unsigned int *pstart, *pend, *p; + + if ((value & fcur->mask) == fcur->value) + continue; + + /* These PTRRELOCs will disappear once the new scheme for + * modules and vdso is implemented + */ + pstart = ((unsigned int *)fcur) + (fcur->start_off / 4); + pend = ((unsigned int *)fcur) + (fcur->end_off / 4); + + for (p = pstart; p < pend; p++) { + *p = 0x60000000u; + asm volatile ("dcbst 0, %0" : : "r" (p)); + } + asm volatile ("sync" : : : "memory"); + for (p = pstart; p < pend; p++) + asm volatile ("icbi 0,%0" : : "r" (p)); + asm volatile ("sync; isync" : : : "memory"); + } +} diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 645c7f10fb28..e720729f3e55 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -487,7 +487,7 @@ BEGIN_FTR_SECTION rlwimi r13,r12,16,0x20 mfcr r12 cmpwi r13,0x2c - beq .do_stab_bolted_pSeries + beq do_stab_bolted_pSeries mtcrf 0x80,r12 mfspr r12,SPRN_SPRG2 END_FTR_SECTION_IFCLR(CPU_FTR_SLB) @@ -600,7 +600,7 @@ system_call_pSeries: STD_EXCEPTION_PSERIES(., performance_monitor) .align 7 -_GLOBAL(do_stab_bolted_pSeries) +do_stab_bolted_pSeries: mtcrf 0x80,r12 mfspr r12,SPRN_SPRG2 EXCEPTION_PROLOG_PSERIES(PACA_EXSLB, .do_stab_bolted) @@ -1046,7 +1046,7 @@ slb_miss_fault: li r5,0 std r4,_DAR(r1) std r5,_DSISR(r1) - b .handle_page_fault + b handle_page_fault unrecov_user_slb: EXCEPTION_PROLOG_COMMON(0x4200, PACA_EXGEN) @@ -1174,12 +1174,13 @@ program_check_common: .globl fp_unavailable_common fp_unavailable_common: EXCEPTION_PROLOG_COMMON(0x800, PACA_EXGEN) - bne .load_up_fpu /* if from user, just load it up */ + bne 1f /* if from user, just load it up */ bl .save_nvgprs addi r3,r1,STACK_FRAME_OVERHEAD ENABLE_INTS bl .kernel_fp_unavailable_exception BUG_OPCODE +1: b .load_up_fpu .align 7 .globl altivec_unavailable_common @@ -1279,10 +1280,10 @@ _GLOBAL(do_hash_page) std r4,_DSISR(r1) andis. r0,r4,0xa450 /* weird error? */ - bne- .handle_page_fault /* if not, try to insert a HPTE */ + bne- handle_page_fault /* if not, try to insert a HPTE */ BEGIN_FTR_SECTION andis. r0,r4,0x0020 /* Is it a segment table fault? */ - bne- .do_ste_alloc /* If so handle it */ + bne- do_ste_alloc /* If so handle it */ END_FTR_SECTION_IFCLR(CPU_FTR_SLB) /* @@ -1324,7 +1325,7 @@ BEGIN_FW_FTR_SECTION * because ret_from_except_lite will check for and handle pending * interrupts if necessary. */ - beq .ret_from_except_lite + beq 13f /* For a hash failure, we don't bother re-enabling interrupts */ ble- 12f @@ -1346,14 +1347,14 @@ BEGIN_FW_FTR_SECTION END_FW_FTR_SECTION_IFCLR(FW_FEATURE_ISERIES) /* Here we have a page fault that hash_page can't handle. */ -_GLOBAL(handle_page_fault) +handle_page_fault: ENABLE_INTS 11: ld r4,_DAR(r1) ld r5,_DSISR(r1) addi r3,r1,STACK_FRAME_OVERHEAD bl .do_page_fault cmpdi r3,0 - beq+ .ret_from_except_lite + beq+ 13f bl .save_nvgprs mr r5,r3 addi r3,r1,STACK_FRAME_OVERHEAD @@ -1370,12 +1371,14 @@ _GLOBAL(handle_page_fault) bl .low_hash_fault b .ret_from_except +13: b .ret_from_except_lite + /* here we have a segment miss */ -_GLOBAL(do_ste_alloc) +do_ste_alloc: bl .ste_allocate /* try to insert stab entry */ cmpdi r3,0 - beq+ fast_exception_return - b .handle_page_fault + bne- handle_page_fault + b fast_exception_return /* * r13 points to the PACA, r9 contains the saved CR, @@ -1580,11 +1583,6 @@ _STATIC(__start_initialization_iSeries) li r0,0 stdu r0,-STACK_FRAME_OVERHEAD(r1) - LOAD_REG_IMMEDIATE(r3,cpu_specs) - LOAD_REG_IMMEDIATE(r4,cur_cpu_spec) - li r5,0 - bl .identify_cpu - LOAD_REG_IMMEDIATE(r2,__toc_start) addi r2,r2,0x4000 addi r2,r2,0x4000 @@ -1646,6 +1644,8 @@ _GLOBAL(__start_initialization_multiplatform) cmpwi r0,0x3c /* 970FX */ beq 1f cmpwi r0,0x44 /* 970MP */ + beq 1f + cmpwi r0,0x45 /* 970GX */ bne 2f 1: bl .__cpu_preinit_ppc970 2: @@ -1964,13 +1964,6 @@ _STATIC(start_here_multiplatform) addi r2,r2,0x4000 add r2,r2,r26 - LOAD_REG_IMMEDIATE(r3, cpu_specs) - add r3,r3,r26 - LOAD_REG_IMMEDIATE(r4,cur_cpu_spec) - add r4,r4,r26 - mr r5,r26 - bl .identify_cpu - /* Do very early kernel initializations, including initial hash table, * stab and slb setup before we turn on relocation. */ @@ -2000,13 +1993,6 @@ _STATIC(start_here_common) li r0,0 stdu r0,-STACK_FRAME_OVERHEAD(r1) - /* Apply the CPUs-specific fixups (nop out sections not relevant - * to this CPU - */ - li r3,0 - bl .do_cpu_ftr_fixups - bl .do_fw_ftr_fixups - /* ptr to current */ LOAD_REG_IMMEDIATE(r4, init_task) std r4,PACACURRENT(r13) diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index f88a2a675d90..ba6b7256084b 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -47,6 +47,17 @@ static int novmerge = 0; static int novmerge = 1; #endif +static inline unsigned long iommu_num_pages(unsigned long vaddr, + unsigned long slen) +{ + unsigned long npages; + + npages = IOMMU_PAGE_ALIGN(vaddr + slen) - (vaddr & IOMMU_PAGE_MASK); + npages >>= IOMMU_PAGE_SHIFT; + + return npages; +} + static int __init setup_iommu(char *str) { if (!strcmp(str, "novmerge")) @@ -178,10 +189,10 @@ static dma_addr_t iommu_alloc(struct iommu_table *tbl, void *page, } entry += tbl->it_offset; /* Offset into real TCE table */ - ret = entry << PAGE_SHIFT; /* Set the return dma address */ + ret = entry << IOMMU_PAGE_SHIFT; /* Set the return dma address */ /* Put the TCEs in the HW table */ - ppc_md.tce_build(tbl, entry, npages, (unsigned long)page & PAGE_MASK, + ppc_md.tce_build(tbl, entry, npages, (unsigned long)page & IOMMU_PAGE_MASK, direction); @@ -203,7 +214,7 @@ static void __iommu_free(struct iommu_table *tbl, dma_addr_t dma_addr, unsigned long entry, free_entry; unsigned long i; - entry = dma_addr >> PAGE_SHIFT; + entry = dma_addr >> IOMMU_PAGE_SHIFT; free_entry = entry - tbl->it_offset; if (((free_entry + npages) > tbl->it_size) || @@ -270,7 +281,7 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl, /* Init first segment length for backout at failure */ outs->dma_length = 0; - DBG("mapping %d elements:\n", nelems); + DBG("sg mapping %d elements:\n", nelems); spin_lock_irqsave(&(tbl->it_lock), flags); @@ -285,9 +296,8 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl, } /* Allocate iommu entries for that segment */ vaddr = (unsigned long)page_address(s->page) + s->offset; - npages = PAGE_ALIGN(vaddr + slen) - (vaddr & PAGE_MASK); - npages >>= PAGE_SHIFT; - entry = iommu_range_alloc(tbl, npages, &handle, mask >> PAGE_SHIFT, 0); + npages = iommu_num_pages(vaddr, slen); + entry = iommu_range_alloc(tbl, npages, &handle, mask >> IOMMU_PAGE_SHIFT, 0); DBG(" - vaddr: %lx, size: %lx\n", vaddr, slen); @@ -301,14 +311,14 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl, /* Convert entry to a dma_addr_t */ entry += tbl->it_offset; - dma_addr = entry << PAGE_SHIFT; - dma_addr |= s->offset; + dma_addr = entry << IOMMU_PAGE_SHIFT; + dma_addr |= (s->offset & ~IOMMU_PAGE_MASK); - DBG(" - %lx pages, entry: %lx, dma_addr: %lx\n", + DBG(" - %lu pages, entry: %lx, dma_addr: %lx\n", npages, entry, dma_addr); /* Insert into HW table */ - ppc_md.tce_build(tbl, entry, npages, vaddr & PAGE_MASK, direction); + ppc_md.tce_build(tbl, entry, npages, vaddr & IOMMU_PAGE_MASK, direction); /* If we are in an open segment, try merging */ if (segstart != s) { @@ -323,7 +333,7 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl, DBG(" can't merge, new segment.\n"); } else { outs->dma_length += s->length; - DBG(" merged, new len: %lx\n", outs->dma_length); + DBG(" merged, new len: %ux\n", outs->dma_length); } } @@ -367,9 +377,8 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl, if (s->dma_length != 0) { unsigned long vaddr, npages; - vaddr = s->dma_address & PAGE_MASK; - npages = (PAGE_ALIGN(s->dma_address + s->dma_length) - vaddr) - >> PAGE_SHIFT; + vaddr = s->dma_address & IOMMU_PAGE_MASK; + npages = iommu_num_pages(s->dma_address, s->dma_length); __iommu_free(tbl, vaddr, npages); s->dma_address = DMA_ERROR_CODE; s->dma_length = 0; @@ -398,8 +407,7 @@ void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist, if (sglist->dma_length == 0) break; - npages = (PAGE_ALIGN(dma_handle + sglist->dma_length) - - (dma_handle & PAGE_MASK)) >> PAGE_SHIFT; + npages = iommu_num_pages(dma_handle,sglist->dma_length); __iommu_free(tbl, dma_handle, npages); sglist++; } @@ -532,12 +540,11 @@ dma_addr_t iommu_map_single(struct iommu_table *tbl, void *vaddr, BUG_ON(direction == DMA_NONE); uaddr = (unsigned long)vaddr; - npages = PAGE_ALIGN(uaddr + size) - (uaddr & PAGE_MASK); - npages >>= PAGE_SHIFT; + npages = iommu_num_pages(uaddr, size); if (tbl) { dma_handle = iommu_alloc(tbl, vaddr, npages, direction, - mask >> PAGE_SHIFT, 0); + mask >> IOMMU_PAGE_SHIFT, 0); if (dma_handle == DMA_ERROR_CODE) { if (printk_ratelimit()) { printk(KERN_INFO "iommu_alloc failed, " @@ -545,7 +552,7 @@ dma_addr_t iommu_map_single(struct iommu_table *tbl, void *vaddr, tbl, vaddr, npages); } } else - dma_handle |= (uaddr & ~PAGE_MASK); + dma_handle |= (uaddr & ~IOMMU_PAGE_MASK); } return dma_handle; @@ -554,11 +561,14 @@ dma_addr_t iommu_map_single(struct iommu_table *tbl, void *vaddr, void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle, size_t size, enum dma_data_direction direction) { + unsigned int npages; + BUG_ON(direction == DMA_NONE); - if (tbl) - iommu_free(tbl, dma_handle, (PAGE_ALIGN(dma_handle + size) - - (dma_handle & PAGE_MASK)) >> PAGE_SHIFT); + if (tbl) { + npages = iommu_num_pages(dma_handle, size); + iommu_free(tbl, dma_handle, npages); + } } /* Allocates a contiguous real buffer and creates mappings over it. @@ -570,11 +580,11 @@ void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size, { void *ret = NULL; dma_addr_t mapping; - unsigned int npages, order; + unsigned int order; + unsigned int nio_pages, io_order; struct page *page; size = PAGE_ALIGN(size); - npages = size >> PAGE_SHIFT; order = get_order(size); /* @@ -598,8 +608,10 @@ void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size, memset(ret, 0, size); /* Set up tces to cover the allocated range */ - mapping = iommu_alloc(tbl, ret, npages, DMA_BIDIRECTIONAL, - mask >> PAGE_SHIFT, order); + nio_pages = size >> IOMMU_PAGE_SHIFT; + io_order = get_iommu_order(size); + mapping = iommu_alloc(tbl, ret, nio_pages, DMA_BIDIRECTIONAL, + mask >> IOMMU_PAGE_SHIFT, io_order); if (mapping == DMA_ERROR_CODE) { free_pages((unsigned long)ret, order); return NULL; @@ -611,12 +623,13 @@ void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size, void iommu_free_coherent(struct iommu_table *tbl, size_t size, void *vaddr, dma_addr_t dma_handle) { - unsigned int npages; - if (tbl) { + unsigned int nio_pages; + + size = PAGE_ALIGN(size); + nio_pages = size >> IOMMU_PAGE_SHIFT; + iommu_free(tbl, dma_handle, nio_pages); size = PAGE_ALIGN(size); - npages = size >> PAGE_SHIFT; - iommu_free(tbl, dma_handle, npages); free_pages((unsigned long)vaddr, get_order(size)); } } diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 88fd73fdf048..412bea3cf813 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -102,80 +102,6 @@ _GLOBAL(reloc_got2) blr /* - * identify_cpu, - * called with r3 = data offset and r4 = CPU number - * doesn't change r3 - */ -_GLOBAL(identify_cpu) - addis r8,r3,cpu_specs@ha - addi r8,r8,cpu_specs@l - mfpvr r7 -1: - lwz r5,CPU_SPEC_PVR_MASK(r8) - and r5,r5,r7 - lwz r6,CPU_SPEC_PVR_VALUE(r8) - cmplw 0,r6,r5 - beq 1f - addi r8,r8,CPU_SPEC_ENTRY_SIZE - b 1b -1: - addis r6,r3,cur_cpu_spec@ha - addi r6,r6,cur_cpu_spec@l - sub r8,r8,r3 - stw r8,0(r6) - blr - -/* - * do_cpu_ftr_fixups - goes through the list of CPU feature fixups - * and writes nop's over sections of code that don't apply for this cpu. - * r3 = data offset (not changed) - */ -_GLOBAL(do_cpu_ftr_fixups) - /* Get CPU 0 features */ - addis r6,r3,cur_cpu_spec@ha - addi r6,r6,cur_cpu_spec@l - lwz r4,0(r6) - add r4,r4,r3 - lwz r4,CPU_SPEC_FEATURES(r4) - - /* Get the fixup table */ - addis r6,r3,__start___ftr_fixup@ha - addi r6,r6,__start___ftr_fixup@l - addis r7,r3,__stop___ftr_fixup@ha - addi r7,r7,__stop___ftr_fixup@l - - /* Do the fixup */ -1: cmplw 0,r6,r7 - bgelr - addi r6,r6,16 - lwz r8,-16(r6) /* mask */ - and r8,r8,r4 - lwz r9,-12(r6) /* value */ - cmplw 0,r8,r9 - beq 1b - lwz r8,-8(r6) /* section begin */ - lwz r9,-4(r6) /* section end */ - subf. r9,r8,r9 - beq 1b - /* write nops over the section of code */ - /* todo: if large section, add a branch at the start of it */ - srwi r9,r9,2 - mtctr r9 - add r8,r8,r3 - lis r0,0x60000000@h /* nop */ -3: stw r0,0(r8) - andi. r10,r4,CPU_FTR_SPLIT_ID_CACHE@l - beq 2f - dcbst 0,r8 /* suboptimal, but simpler */ - sync - icbi 0,r8 -2: addi r8,r8,4 - bdnz 3b - sync /* additional sync needed on g4 */ - isync - b 1b - -/* * call_setup_cpu - call the setup_cpu function for this cpu * r3 = data offset, r24 = cpu number * diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index c70e20708a1f..21fd2c662a99 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -246,130 +246,6 @@ _GLOBAL(__flush_dcache_icache) isync blr -/* - * identify_cpu and calls setup_cpu - * In: r3 = base of the cpu_specs array - * r4 = address of cur_cpu_spec - * r5 = relocation offset - */ -_GLOBAL(identify_cpu) - mfpvr r7 -1: - lwz r8,CPU_SPEC_PVR_MASK(r3) - and r8,r8,r7 - lwz r9,CPU_SPEC_PVR_VALUE(r3) - cmplw 0,r9,r8 - beq 1f - addi r3,r3,CPU_SPEC_ENTRY_SIZE - b 1b -1: - sub r0,r3,r5 - std r0,0(r4) - ld r4,CPU_SPEC_SETUP(r3) - cmpdi 0,r4,0 - add r4,r4,r5 - beqlr - ld r4,0(r4) - add r4,r4,r5 - mtctr r4 - /* Calling convention for cpu setup is r3=offset, r4=cur_cpu_spec */ - mr r4,r3 - mr r3,r5 - bctr - -/* - * do_cpu_ftr_fixups - goes through the list of CPU feature fixups - * and writes nop's over sections of code that don't apply for this cpu. - * r3 = data offset (not changed) - */ -_GLOBAL(do_cpu_ftr_fixups) - /* Get CPU 0 features */ - LOAD_REG_IMMEDIATE(r6,cur_cpu_spec) - sub r6,r6,r3 - ld r4,0(r6) - sub r4,r4,r3 - ld r4,CPU_SPEC_FEATURES(r4) - /* Get the fixup table */ - LOAD_REG_IMMEDIATE(r6,__start___ftr_fixup) - sub r6,r6,r3 - LOAD_REG_IMMEDIATE(r7,__stop___ftr_fixup) - sub r7,r7,r3 - /* Do the fixup */ -1: cmpld r6,r7 - bgelr - addi r6,r6,32 - ld r8,-32(r6) /* mask */ - and r8,r8,r4 - ld r9,-24(r6) /* value */ - cmpld r8,r9 - beq 1b - ld r8,-16(r6) /* section begin */ - ld r9,-8(r6) /* section end */ - subf. r9,r8,r9 - beq 1b - /* write nops over the section of code */ - /* todo: if large section, add a branch at the start of it */ - srwi r9,r9,2 - mtctr r9 - sub r8,r8,r3 - lis r0,0x60000000@h /* nop */ -3: stw r0,0(r8) - andi. r10,r4,CPU_FTR_SPLIT_ID_CACHE@l - beq 2f - dcbst 0,r8 /* suboptimal, but simpler */ - sync - icbi 0,r8 -2: addi r8,r8,4 - bdnz 3b - sync /* additional sync needed on g4 */ - isync - b 1b - -/* - * do_fw_ftr_fixups - goes through the list of firmware feature fixups - * and writes nop's over sections of code that don't apply for this firmware. - * r3 = data offset (not changed) - */ -_GLOBAL(do_fw_ftr_fixups) - /* Get firmware features */ - LOAD_REG_IMMEDIATE(r6,powerpc_firmware_features) - sub r6,r6,r3 - ld r4,0(r6) - /* Get the fixup table */ - LOAD_REG_IMMEDIATE(r6,__start___fw_ftr_fixup) - sub r6,r6,r3 - LOAD_REG_IMMEDIATE(r7,__stop___fw_ftr_fixup) - sub r7,r7,r3 - /* Do the fixup */ -1: cmpld r6,r7 - bgelr - addi r6,r6,32 - ld r8,-32(r6) /* mask */ - and r8,r8,r4 - ld r9,-24(r6) /* value */ - cmpld r8,r9 - beq 1b - ld r8,-16(r6) /* section begin */ - ld r9,-8(r6) /* section end */ - subf. r9,r8,r9 - beq 1b - /* write nops over the section of code */ - /* todo: if large section, add a branch at the start of it */ - srwi r9,r9,2 - mtctr r9 - sub r8,r8,r3 - lis r0,0x60000000@h /* nop */ -3: stw r0,0(r8) -BEGIN_FTR_SECTION - dcbst 0,r8 /* suboptimal, but simpler */ - sync - icbi 0,r8 -END_FTR_SECTION_IFSET(CPU_FTR_SPLIT_ID_CACHE) - addi r8,r8,4 - bdnz 3b - sync /* additional sync needed on g4 */ - isync - b 1b #if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) /* diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c index 92f4e5f64f02..e2c3c6a85f33 100644 --- a/arch/powerpc/kernel/module_32.c +++ b/arch/powerpc/kernel/module_32.c @@ -24,6 +24,8 @@ #include <linux/kernel.h> #include <linux/cache.h> +#include "setup.h" + #if 0 #define DEBUGP printk #else @@ -269,33 +271,50 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, return 0; } +static const Elf_Shdr *find_section(const Elf_Ehdr *hdr, + const Elf_Shdr *sechdrs, + const char *name) +{ + char *secstrings; + unsigned int i; + + secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + for (i = 1; i < hdr->e_shnum; i++) + if (strcmp(secstrings+sechdrs[i].sh_name, name) == 0) + return &sechdrs[i]; + return NULL; +} + int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *me) { - char *secstrings; - unsigned int i; + const Elf_Shdr *sect; me->arch.bug_table = NULL; me->arch.num_bugs = 0; /* Find the __bug_table section, if present */ - secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; - for (i = 1; i < hdr->e_shnum; i++) { - if (strcmp(secstrings+sechdrs[i].sh_name, "__bug_table")) - continue; - me->arch.bug_table = (void *) sechdrs[i].sh_addr; - me->arch.num_bugs = sechdrs[i].sh_size / sizeof(struct bug_entry); - break; + sect = find_section(hdr, sechdrs, "__bug_table"); + if (sect != NULL) { + me->arch.bug_table = (void *) sect->sh_addr; + me->arch.num_bugs = sect->sh_size / sizeof(struct bug_entry); } - /* + /* * Strictly speaking this should have a spinlock to protect against * traversals, but since we only traverse on BUG()s, a spinlock * could potentially lead to deadlock and thus be counter-productive. */ list_add(&me->arch.bug_list, &module_bug_list); + /* Apply feature fixups */ + sect = find_section(hdr, sechdrs, "__ftr_fixup"); + if (sect != NULL) + do_feature_fixups(cur_cpu_spec->cpu_features, + (void *)sect->sh_addr, + (void *)sect->sh_addr + sect->sh_size); + return 0; } diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c index ba34001fca8e..8dd1f0aae5d6 100644 --- a/arch/powerpc/kernel/module_64.c +++ b/arch/powerpc/kernel/module_64.c @@ -22,6 +22,9 @@ #include <linux/vmalloc.h> #include <asm/module.h> #include <asm/uaccess.h> +#include <asm/firmware.h> + +#include "setup.h" /* FIXME: We don't do .init separately. To do this, we'd need to have a separate r2 value in the init and core section, and stub between @@ -400,6 +403,11 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, | (value & 0x03fffffc); break; + case R_PPC64_REL64: + /* 64 bits relative (used by features fixups) */ + *location = value - (unsigned long)location; + break; + default: printk("%s: Unknown ADD relocation: %lu\n", me->name, @@ -413,23 +421,33 @@ int apply_relocate_add(Elf64_Shdr *sechdrs, LIST_HEAD(module_bug_list); -int module_finalize(const Elf_Ehdr *hdr, - const Elf_Shdr *sechdrs, struct module *me) +static const Elf_Shdr *find_section(const Elf_Ehdr *hdr, + const Elf_Shdr *sechdrs, + const char *name) { char *secstrings; unsigned int i; + secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + for (i = 1; i < hdr->e_shnum; i++) + if (strcmp(secstrings+sechdrs[i].sh_name, name) == 0) + return &sechdrs[i]; + return NULL; +} + +int module_finalize(const Elf_Ehdr *hdr, + const Elf_Shdr *sechdrs, struct module *me) +{ + const Elf_Shdr *sect; + me->arch.bug_table = NULL; me->arch.num_bugs = 0; /* Find the __bug_table section, if present */ - secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; - for (i = 1; i < hdr->e_shnum; i++) { - if (strcmp(secstrings+sechdrs[i].sh_name, "__bug_table")) - continue; - me->arch.bug_table = (void *) sechdrs[i].sh_addr; - me->arch.num_bugs = sechdrs[i].sh_size / sizeof(struct bug_entry); - break; + sect = find_section(hdr, sechdrs, "__bug_table"); + if (sect != NULL) { + me->arch.bug_table = (void *) sect->sh_addr; + me->arch.num_bugs = sect->sh_size / sizeof(struct bug_entry); } /* @@ -439,6 +457,19 @@ int module_finalize(const Elf_Ehdr *hdr, */ list_add(&me->arch.bug_list, &module_bug_list); + /* Apply feature fixups */ + sect = find_section(hdr, sechdrs, "__ftr_fixup"); + if (sect != NULL) + do_feature_fixups(cur_cpu_spec->cpu_features, + (void *)sect->sh_addr, + (void *)sect->sh_addr + sect->sh_size); + + sect = find_section(hdr, sechdrs, "__fw_ftr_fixup"); + if (sect != NULL) + do_feature_fixups(powerpc_firmware_features, + (void *)sect->sh_addr, + (void *)sect->sh_addr + sect->sh_size); + return 0; } diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c index 9b49f8691d29..0d9ff72e2852 100644 --- a/arch/powerpc/kernel/pci_32.c +++ b/arch/powerpc/kernel/pci_32.c @@ -441,14 +441,14 @@ update_bridge_base(struct pci_bus *bus, int i) end = res->end - off; io_base_lo = (start >> 8) & PCI_IO_RANGE_MASK; io_limit_lo = (end >> 8) & PCI_IO_RANGE_MASK; - if (end > 0xffff) { - pci_write_config_word(dev, PCI_IO_BASE_UPPER16, - start >> 16); - pci_write_config_word(dev, PCI_IO_LIMIT_UPPER16, - end >> 16); + if (end > 0xffff) io_base_lo |= PCI_IO_RANGE_TYPE_32; - } else + else io_base_lo |= PCI_IO_RANGE_TYPE_16; + pci_write_config_word(dev, PCI_IO_BASE_UPPER16, + start >> 16); + pci_write_config_word(dev, PCI_IO_LIMIT_UPPER16, + end >> 16); pci_write_config_byte(dev, PCI_IO_BASE, io_base_lo); pci_write_config_byte(dev, PCI_IO_LIMIT, io_limit_lo); diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index 78d3c0fc8dfb..9bae8a5bf671 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -199,8 +199,14 @@ struct pci_controller * pcibios_alloc_controller(struct device_node *dev) pci_setup_pci_controller(phb); phb->arch_data = dev; phb->is_dynamic = mem_init_done; - if (dev) - PHB_SET_NODE(phb, of_node_to_nid(dev)); + if (dev) { + int nid = of_node_to_nid(dev); + + if (nid < 0 || !node_online(nid)) + nid = -1; + + PHB_SET_NODE(phb, nid); + } return phb; } diff --git a/arch/powerpc/kernel/perfmon_fsl_booke.c b/arch/powerpc/kernel/perfmon_fsl_booke.c deleted file mode 100644 index e0dcf2b41fbe..000000000000 --- a/arch/powerpc/kernel/perfmon_fsl_booke.c +++ /dev/null @@ -1,221 +0,0 @@ -/* arch/powerpc/kernel/perfmon_fsl_booke.c - * Freescale Book-E Performance Monitor code - * - * Author: Andy Fleming - * Copyright (c) 2004 Freescale Semiconductor, Inc - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/stddef.h> -#include <linux/unistd.h> -#include <linux/ptrace.h> -#include <linux/slab.h> -#include <linux/user.h> -#include <linux/a.out.h> -#include <linux/interrupt.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/prctl.h> - -#include <asm/pgtable.h> -#include <asm/uaccess.h> -#include <asm/system.h> -#include <asm/io.h> -#include <asm/reg.h> -#include <asm/xmon.h> -#include <asm/pmc.h> - -static inline u32 get_pmlca(int ctr); -static inline void set_pmlca(int ctr, u32 pmlca); - -static inline u32 get_pmlca(int ctr) -{ - u32 pmlca; - - switch (ctr) { - case 0: - pmlca = mfpmr(PMRN_PMLCA0); - break; - case 1: - pmlca = mfpmr(PMRN_PMLCA1); - break; - case 2: - pmlca = mfpmr(PMRN_PMLCA2); - break; - case 3: - pmlca = mfpmr(PMRN_PMLCA3); - break; - default: - panic("Bad ctr number\n"); - } - - return pmlca; -} - -static inline void set_pmlca(int ctr, u32 pmlca) -{ - switch (ctr) { - case 0: - mtpmr(PMRN_PMLCA0, pmlca); - break; - case 1: - mtpmr(PMRN_PMLCA1, pmlca); - break; - case 2: - mtpmr(PMRN_PMLCA2, pmlca); - break; - case 3: - mtpmr(PMRN_PMLCA3, pmlca); - break; - default: - panic("Bad ctr number\n"); - } -} - -void init_pmc_stop(int ctr) -{ - u32 pmlca = (PMLCA_FC | PMLCA_FCS | PMLCA_FCU | - PMLCA_FCM1 | PMLCA_FCM0); - u32 pmlcb = 0; - - switch (ctr) { - case 0: - mtpmr(PMRN_PMLCA0, pmlca); - mtpmr(PMRN_PMLCB0, pmlcb); - break; - case 1: - mtpmr(PMRN_PMLCA1, pmlca); - mtpmr(PMRN_PMLCB1, pmlcb); - break; - case 2: - mtpmr(PMRN_PMLCA2, pmlca); - mtpmr(PMRN_PMLCB2, pmlcb); - break; - case 3: - mtpmr(PMRN_PMLCA3, pmlca); - mtpmr(PMRN_PMLCB3, pmlcb); - break; - default: - panic("Bad ctr number!\n"); - } -} - -void set_pmc_event(int ctr, int event) -{ - u32 pmlca; - - pmlca = get_pmlca(ctr); - - pmlca = (pmlca & ~PMLCA_EVENT_MASK) | - ((event << PMLCA_EVENT_SHIFT) & - PMLCA_EVENT_MASK); - - set_pmlca(ctr, pmlca); -} - -void set_pmc_user_kernel(int ctr, int user, int kernel) -{ - u32 pmlca; - - pmlca = get_pmlca(ctr); - - if(user) - pmlca &= ~PMLCA_FCU; - else - pmlca |= PMLCA_FCU; - - if(kernel) - pmlca &= ~PMLCA_FCS; - else - pmlca |= PMLCA_FCS; - - set_pmlca(ctr, pmlca); -} - -void set_pmc_marked(int ctr, int mark0, int mark1) -{ - u32 pmlca = get_pmlca(ctr); - - if(mark0) - pmlca &= ~PMLCA_FCM0; - else - pmlca |= PMLCA_FCM0; - - if(mark1) - pmlca &= ~PMLCA_FCM1; - else - pmlca |= PMLCA_FCM1; - - set_pmlca(ctr, pmlca); -} - -void pmc_start_ctr(int ctr, int enable) -{ - u32 pmlca = get_pmlca(ctr); - - pmlca &= ~PMLCA_FC; - - if (enable) - pmlca |= PMLCA_CE; - else - pmlca &= ~PMLCA_CE; - - set_pmlca(ctr, pmlca); -} - -void pmc_start_ctrs(int enable) -{ - u32 pmgc0 = mfpmr(PMRN_PMGC0); - - pmgc0 &= ~PMGC0_FAC; - pmgc0 |= PMGC0_FCECE; - - if (enable) - pmgc0 |= PMGC0_PMIE; - else - pmgc0 &= ~PMGC0_PMIE; - - mtpmr(PMRN_PMGC0, pmgc0); -} - -void pmc_stop_ctrs(void) -{ - u32 pmgc0 = mfpmr(PMRN_PMGC0); - - pmgc0 |= PMGC0_FAC; - - pmgc0 &= ~(PMGC0_PMIE | PMGC0_FCECE); - - mtpmr(PMRN_PMGC0, pmgc0); -} - -void dump_pmcs(void) -{ - printk("pmgc0: %x\n", mfpmr(PMRN_PMGC0)); - printk("pmc\t\tpmlca\t\tpmlcb\n"); - printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC0), - mfpmr(PMRN_PMLCA0), mfpmr(PMRN_PMLCB0)); - printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC1), - mfpmr(PMRN_PMLCA1), mfpmr(PMRN_PMLCB1)); - printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC2), - mfpmr(PMRN_PMLCA2), mfpmr(PMRN_PMLCB2)); - printk("%8x\t%8x\t%8x\n", mfpmr(PMRN_PMC3), - mfpmr(PMRN_PMLCA3), mfpmr(PMRN_PMLCB3)); -} - -EXPORT_SYMBOL(init_pmc_stop); -EXPORT_SYMBOL(set_pmc_event); -EXPORT_SYMBOL(set_pmc_user_kernel); -EXPORT_SYMBOL(set_pmc_marked); -EXPORT_SYMBOL(pmc_start_ctr); -EXPORT_SYMBOL(pmc_start_ctrs); -EXPORT_SYMBOL(pmc_stop_ctrs); -EXPORT_SYMBOL(dump_pmcs); diff --git a/arch/powerpc/kernel/pmc.c b/arch/powerpc/kernel/pmc.c index a0a2efadeabf..3d8f6f44641e 100644 --- a/arch/powerpc/kernel/pmc.c +++ b/arch/powerpc/kernel/pmc.c @@ -71,7 +71,7 @@ int reserve_pmc_hardware(perf_irq_t new_perf_irq) } pmc_owner_caller = __builtin_return_address(0); - perf_irq = new_perf_irq ? : dummy_perf; + perf_irq = new_perf_irq ? new_perf_irq : dummy_perf; out: spin_unlock(&pmc_owner_lock); diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 7b2f6452ba72..f3d4dd580dd6 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -341,13 +341,6 @@ struct task_struct *__switch_to(struct task_struct *prev, static int instructions_to_print = 16; -#ifdef CONFIG_PPC64 -#define BAD_PC(pc) ((REGION_ID(pc) != KERNEL_REGION_ID) && \ - (REGION_ID(pc) != VMALLOC_REGION_ID)) -#else -#define BAD_PC(pc) ((pc) < KERNELBASE) -#endif - static void show_instructions(struct pt_regs *regs) { int i; @@ -366,7 +359,8 @@ static void show_instructions(struct pt_regs *regs) * bad address because the pc *should* only be a * kernel address. */ - if (BAD_PC(pc) || __get_user(instr, (unsigned int __user *)pc)) { + if (!__kernel_text_address(pc) || + __get_user(instr, (unsigned int __user *)pc)) { printk("XXXXXXXX "); } else { if (regs->nip == pc) diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 865b9648d0d5..bdb412d4b748 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -1014,7 +1014,7 @@ EXPORT_SYMBOL(find_all_nodes); /** Checks if the given "compat" string matches one of the strings in * the device's "compatible" property */ -int device_is_compatible(struct device_node *device, const char *compat) +int device_is_compatible(const struct device_node *device, const char *compat) { const char* cp; int cplen, l; @@ -1491,7 +1491,8 @@ static int __init prom_reconfig_setup(void) __initcall(prom_reconfig_setup); #endif -struct property *of_find_property(struct device_node *np, const char *name, +struct property *of_find_property(const struct device_node *np, + const char *name, int *lenp) { struct property *pp; @@ -1512,7 +1513,8 @@ struct property *of_find_property(struct device_node *np, const char *name, * Find a property with a given name for a given node * and return the value. */ -const void *get_property(struct device_node *np, const char *name, int *lenp) +const void *get_property(const struct device_node *np, const char *name, + int *lenp) { struct property *pp = of_find_property(np,name,lenp); return pp ? pp->value : NULL; diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 191d0ab09222..a4c2964a3ca6 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -91,6 +91,7 @@ int ucache_bsize; unsigned long __init early_init(unsigned long dt_ptr) { unsigned long offset = reloc_offset(); + struct cpu_spec *spec; /* First zero the BSS -- use memset_io, some platforms don't have * caches on yet */ @@ -100,8 +101,11 @@ unsigned long __init early_init(unsigned long dt_ptr) * Identify the CPU type and fix up code sections * that depend on which cpu we have. */ - identify_cpu(offset, 0); - do_cpu_ftr_fixups(offset); + spec = identify_cpu(offset); + + do_feature_fixups(spec->cpu_features, + PTRRELOC(&__start___ftr_fixup), + PTRRELOC(&__stop___ftr_fixup)); return KERNELBASE + offset; } diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 4b2e32eab9dc..16278968dab6 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -170,6 +170,9 @@ void __init setup_paca(int cpu) void __init early_setup(unsigned long dt_ptr) { + /* Identify CPU type */ + identify_cpu(0); + /* Assume we're on cpu 0 for now. Don't write to the paca yet! */ setup_paca(0); @@ -348,6 +351,14 @@ void __init setup_system(void) { DBG(" -> setup_system()\n"); + /* Apply the CPUs-specific and firmware specific fixups to kernel + * text (nop out sections not relevant to this CPU or this firmware) + */ + do_feature_fixups(cur_cpu_spec->cpu_features, + &__start___ftr_fixup, &__stop___ftr_fixup); + do_feature_fixups(powerpc_firmware_features, + &__start___fw_ftr_fixup, &__stop___fw_ftr_fixup); + /* * Unflatten the device-tree passed by prom_init or kexec */ diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 5b59bc18dfe7..a1b5e4b16151 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -220,11 +220,8 @@ static void account_process_time(struct pt_regs *regs) */ struct cpu_purr_data { int initialized; /* thread is running */ - u64 tb0; /* timebase at origin time */ - u64 purr0; /* PURR at origin time */ u64 tb; /* last TB value read */ u64 purr; /* last PURR value read */ - u64 stolen; /* stolen time so far */ spinlock_t lock; }; @@ -234,10 +231,8 @@ static void snapshot_tb_and_purr(void *data) { struct cpu_purr_data *p = &__get_cpu_var(cpu_purr_data); - p->tb0 = mftb(); - p->purr0 = mfspr(SPRN_PURR); - p->tb = p->tb0; - p->purr = 0; + p->tb = mftb(); + p->purr = mfspr(SPRN_PURR); wmb(); p->initialized = 1; } @@ -258,37 +253,24 @@ void snapshot_timebases(void) void calculate_steal_time(void) { - u64 tb, purr, t0; + u64 tb, purr; s64 stolen; - struct cpu_purr_data *p0, *pme, *phim; - int cpu; + struct cpu_purr_data *pme; if (!cpu_has_feature(CPU_FTR_PURR)) return; - cpu = smp_processor_id(); - pme = &per_cpu(cpu_purr_data, cpu); + pme = &per_cpu(cpu_purr_data, smp_processor_id()); if (!pme->initialized) return; /* this can happen in early boot */ - p0 = &per_cpu(cpu_purr_data, cpu & ~1); - phim = &per_cpu(cpu_purr_data, cpu ^ 1); - spin_lock(&p0->lock); + spin_lock(&pme->lock); tb = mftb(); - purr = mfspr(SPRN_PURR) - pme->purr0; - if (!phim->initialized || !cpu_online(cpu ^ 1)) { - stolen = (tb - pme->tb) - (purr - pme->purr); - } else { - t0 = pme->tb0; - if (phim->tb0 < t0) - t0 = phim->tb0; - stolen = phim->tb - t0 - phim->purr - purr - p0->stolen; - } - if (stolen > 0) { + purr = mfspr(SPRN_PURR); + stolen = (tb - pme->tb) - (purr - pme->purr); + if (stolen > 0) account_steal_time(current, stolen); - p0->stolen += stolen; - } pme->tb = tb; pme->purr = purr; - spin_unlock(&p0->lock); + spin_unlock(&pme->lock); } /* @@ -297,30 +279,17 @@ void calculate_steal_time(void) */ static void snapshot_purr(void) { - int cpu; - u64 purr; - struct cpu_purr_data *p0, *pme, *phim; + struct cpu_purr_data *pme; unsigned long flags; if (!cpu_has_feature(CPU_FTR_PURR)) return; - cpu = smp_processor_id(); - pme = &per_cpu(cpu_purr_data, cpu); - p0 = &per_cpu(cpu_purr_data, cpu & ~1); - phim = &per_cpu(cpu_purr_data, cpu ^ 1); - spin_lock_irqsave(&p0->lock, flags); - pme->tb = pme->tb0 = mftb(); - purr = mfspr(SPRN_PURR); - if (!phim->initialized) { - pme->purr = 0; - pme->purr0 = purr; - } else { - /* set p->purr and p->purr0 for no change in p0->stolen */ - pme->purr = phim->tb - phim->tb0 - phim->purr - p0->stolen; - pme->purr0 = purr - pme->purr; - } + pme = &per_cpu(cpu_purr_data, smp_processor_id()); + spin_lock_irqsave(&pme->lock, flags); + pme->tb = mftb(); + pme->purr = mfspr(SPRN_PURR); pme->initialized = 1; - spin_unlock_irqrestore(&p0->lock, flags); + spin_unlock_irqrestore(&pme->lock, flags); } #endif /* CONFIG_PPC_SPLPAR */ diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index d9f10f2fc372..c66b4771ef44 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -843,7 +843,7 @@ void __kprobes program_check_exception(struct pt_regs *regs) void alignment_exception(struct pt_regs *regs) { - int fixed = 0; + int sig, code, fixed = 0; /* we don't implement logging of alignment exceptions */ if (!(current->thread.align_ctl & PR_UNALIGN_SIGBUS)) @@ -857,14 +857,16 @@ void alignment_exception(struct pt_regs *regs) /* Operand address was bad */ if (fixed == -EFAULT) { - if (user_mode(regs)) - _exception(SIGSEGV, regs, SEGV_ACCERR, regs->dar); - else - /* Search exception table */ - bad_page_fault(regs, regs->dar, SIGSEGV); - return; + sig = SIGSEGV; + code = SEGV_ACCERR; + } else { + sig = SIGBUS; + code = BUS_ADRALN; } - _exception(SIGBUS, regs, BUS_ADRALN, regs->dar); + if (user_mode(regs)) + _exception(sig, regs, code, regs->dar); + else + bad_page_fault(regs, regs->dar, sig); } void StackOverflow(struct pt_regs *regs) @@ -900,14 +902,13 @@ void kernel_fp_unavailable_exception(struct pt_regs *regs) void altivec_unavailable_exception(struct pt_regs *regs) { -#if !defined(CONFIG_ALTIVEC) if (user_mode(regs)) { /* A user program has executed an altivec instruction, but this kernel doesn't support altivec. */ _exception(SIGILL, regs, ILL_ILLOPC, regs->nip); return; } -#endif + printk(KERN_EMERG "Unrecoverable VMX/Altivec Unavailable Exception " "%lx at %lx\n", regs->trap, regs->nip); die("Unrecoverable VMX/Altivec Unavailable Exception", regs, SIGABRT); diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index 1a7e19cdab39..c913ad5cad29 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -36,6 +36,8 @@ #include <asm/vdso.h> #include <asm/vdso_datapage.h> +#include "setup.h" + #undef DEBUG #ifdef DEBUG @@ -586,6 +588,43 @@ static __init int vdso_fixup_datapage(struct lib32_elfinfo *v32, return 0; } + +static __init int vdso_fixup_features(struct lib32_elfinfo *v32, + struct lib64_elfinfo *v64) +{ + void *start32; + unsigned long size32; + +#ifdef CONFIG_PPC64 + void *start64; + unsigned long size64; + + start64 = find_section64(v64->hdr, "__ftr_fixup", &size64); + if (start64) + do_feature_fixups(cur_cpu_spec->cpu_features, + start64, start64 + size64); + + start64 = find_section64(v64->hdr, "__fw_ftr_fixup", &size64); + if (start64) + do_feature_fixups(powerpc_firmware_features, + start64, start64 + size64); +#endif /* CONFIG_PPC64 */ + + start32 = find_section32(v32->hdr, "__ftr_fixup", &size32); + if (start32) + do_feature_fixups(cur_cpu_spec->cpu_features, + start32, start32 + size32); + +#ifdef CONFIG_PPC64 + start32 = find_section32(v32->hdr, "__fw_ftr_fixup", &size32); + if (start32) + do_feature_fixups(powerpc_firmware_features, + start32, start32 + size32); +#endif /* CONFIG_PPC64 */ + + return 0; +} + static __init int vdso_fixup_alt_funcs(struct lib32_elfinfo *v32, struct lib64_elfinfo *v64) { @@ -634,6 +673,9 @@ static __init int vdso_setup(void) if (vdso_fixup_datapage(&v32, &v64)) return -1; + if (vdso_fixup_features(&v32, &v64)) + return -1; + if (vdso_fixup_alt_funcs(&v32, &v64)) return -1; @@ -714,6 +756,7 @@ void __init vdso_init(void) * Setup the syscall map in the vDOS */ vdso_setup_syscall_map(); + /* * Initialize the vDSO images in memory, that is do necessary * fixups of vDSO symbols, locate trampolines, etc... diff --git a/arch/powerpc/kernel/vdso32/vdso32.lds.S b/arch/powerpc/kernel/vdso32/vdso32.lds.S index 6187af2d54c3..26e138c4ce17 100644 --- a/arch/powerpc/kernel/vdso32/vdso32.lds.S +++ b/arch/powerpc/kernel/vdso32/vdso32.lds.S @@ -32,6 +32,18 @@ SECTIONS PROVIDE (_etext = .); PROVIDE (etext = .); + . = ALIGN(8); + __ftr_fixup : { + *(__ftr_fixup) + } + +#ifdef CONFIG_PPC64 + . = ALIGN(8); + __fw_ftr_fixup : { + *(__fw_ftr_fixup) + } +#endif + /* Other stuff is appended to the text segment: */ .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } .rodata1 : { *(.rodata1) } diff --git a/arch/powerpc/kernel/vdso64/gettimeofday.S b/arch/powerpc/kernel/vdso64/gettimeofday.S index 56e76ff5498f..40ffd9b6cef7 100644 --- a/arch/powerpc/kernel/vdso64/gettimeofday.S +++ b/arch/powerpc/kernel/vdso64/gettimeofday.S @@ -229,8 +229,10 @@ V_FUNCTION_BEGIN(__do_get_xsec) xor r0,r8,r8 /* create dependency */ add r3,r3,r0 - /* Get TB & offset it */ - mftb r7 + /* Get TB & offset it. We use the MFTB macro which will generate + * workaround code for Cell. + */ + MFTB(r7) ld r9,CFG_TB_ORIG_STAMP(r3) subf r7,r9,r7 diff --git a/arch/powerpc/kernel/vdso64/vdso64.lds.S b/arch/powerpc/kernel/vdso64/vdso64.lds.S index 4a2b6dc0960c..2d70f35d50b5 100644 --- a/arch/powerpc/kernel/vdso64/vdso64.lds.S +++ b/arch/powerpc/kernel/vdso64/vdso64.lds.S @@ -31,6 +31,16 @@ SECTIONS PROVIDE (_etext = .); PROVIDE (etext = .); + . = ALIGN(8); + __ftr_fixup : { + *(__ftr_fixup) + } + + . = ALIGN(8); + __fw_ftr_fixup : { + *(__fw_ftr_fixup) + } + /* Other stuff is appended to the text segment: */ .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } .rodata1 : { *(.rodata1) } diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index cb87e71eec66..ed007878d1bf 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -92,9 +92,9 @@ static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev) &tbl->it_index, &offset, &size); /* TCE table size - measured in tce entries */ - tbl->it_size = size >> PAGE_SHIFT; + tbl->it_size = size >> IOMMU_PAGE_SHIFT; /* offset for VIO should always be 0 */ - tbl->it_offset = offset >> PAGE_SHIFT; + tbl->it_offset = offset >> IOMMU_PAGE_SHIFT; tbl->it_busno = 0; tbl->it_type = TCE_VB; diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index cb0e8d46c3e8..e8342d867536 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -108,13 +108,7 @@ SECTIONS .initcall.init : { __initcall_start = .; - *(.initcall1.init) - *(.initcall2.init) - *(.initcall3.init) - *(.initcall4.init) - *(.initcall5.init) - *(.initcall6.init) - *(.initcall7.init) + INITCALLS __initcall_end = .; } |