diff options
Diffstat (limited to 'arch/xtensa/include/asm')
24 files changed, 154 insertions, 202 deletions
diff --git a/arch/xtensa/include/asm/Kbuild b/arch/xtensa/include/asm/Kbuild index 854c5e07e867..fa07c686cbcc 100644 --- a/arch/xtensa/include/asm/Kbuild +++ b/arch/xtensa/include/asm/Kbuild @@ -4,6 +4,7 @@ generic-y += extable.h generic-y += kvm_para.h generic-y += mcs_spinlock.h generic-y += param.h +generic-y += parport.h generic-y += qrwlock.h generic-y += qspinlock.h generic-y += user.h diff --git a/arch/xtensa/include/asm/asm-uaccess.h b/arch/xtensa/include/asm/asm-uaccess.h index 7f6cf4151843..7cec869136e3 100644 --- a/arch/xtensa/include/asm/asm-uaccess.h +++ b/arch/xtensa/include/asm/asm-uaccess.h @@ -24,76 +24,6 @@ #include <asm/processor.h> /* - * These assembly macros mirror the C macros in asm/uaccess.h. They - * should always have identical functionality. See - * arch/xtensa/kernel/sys.S for usage. - */ - -#define KERNEL_DS 0 -#define USER_DS 1 - -/* - * get_fs reads current->thread.current_ds into a register. - * On Entry: - * <ad> anything - * <sp> stack - * On Exit: - * <ad> contains current->thread.current_ds - */ - .macro get_fs ad, sp - GET_CURRENT(\ad,\sp) -#if THREAD_CURRENT_DS > 1020 - addi \ad, \ad, TASK_THREAD - l32i \ad, \ad, THREAD_CURRENT_DS - TASK_THREAD -#else - l32i \ad, \ad, THREAD_CURRENT_DS -#endif - .endm - -/* - * set_fs sets current->thread.current_ds to some value. - * On Entry: - * <at> anything (temp register) - * <av> value to write - * <sp> stack - * On Exit: - * <at> destroyed (actually, current) - * <av> preserved, value to write - */ - .macro set_fs at, av, sp - GET_CURRENT(\at,\sp) - s32i \av, \at, THREAD_CURRENT_DS - .endm - -/* - * kernel_ok determines whether we should bypass addr/size checking. - * See the equivalent C-macro version below for clarity. - * On success, kernel_ok branches to a label indicated by parameter - * <success>. This implies that the macro falls through to the next - * insruction on an error. - * - * Note that while this macro can be used independently, we designed - * in for optimal use in the access_ok macro below (i.e., we fall - * through on error). - * - * On Entry: - * <at> anything (temp register) - * <success> label to branch to on success; implies - * fall-through macro on error - * <sp> stack pointer - * On Exit: - * <at> destroyed (actually, current->thread.current_ds) - */ - -#if ((KERNEL_DS != 0) || (USER_DS == 0)) -# error Assembly macro kernel_ok fails -#endif - .macro kernel_ok at, sp, success - get_fs \at, \sp - beqz \at, \success - .endm - -/* * user_ok determines whether the access to user-space memory is allowed. * See the equivalent C-macro version below for clarity. * @@ -147,7 +77,6 @@ * <at> destroyed */ .macro access_ok aa, as, at, sp, error - kernel_ok \at, \sp, .Laccess_ok_\@ user_ok \aa, \as, \at, \error .Laccess_ok_\@: .endm diff --git a/arch/xtensa/include/asm/asmmacro.h b/arch/xtensa/include/asm/asmmacro.h index 809c507d1825..e3474ca411ff 100644 --- a/arch/xtensa/include/asm/asmmacro.h +++ b/arch/xtensa/include/asm/asmmacro.h @@ -191,7 +191,39 @@ #endif .endm -#define XTENSA_STACK_ALIGNMENT 16 + .macro do_nsau cnt, val, tmp, a +#if XCHAL_HAVE_NSA + nsau \cnt, \val +#else + mov \a, \val + movi \cnt, 0 + extui \tmp, \a, 16, 16 + bnez \tmp, 0f + movi \cnt, 16 + slli \a, \a, 16 +0: + extui \tmp, \a, 24, 8 + bnez \tmp, 1f + addi \cnt, \cnt, 8 + slli \a, \a, 8 +1: + movi \tmp, __nsau_data + extui \a, \a, 24, 8 + add \tmp, \tmp, \a + l8ui \tmp, \tmp, 0 + add \cnt, \cnt, \tmp +#endif /* !XCHAL_HAVE_NSA */ + .endm + + .macro do_abs dst, src, tmp +#if XCHAL_HAVE_ABS + abs \dst, \src +#else + neg \tmp, \src + movgez \tmp, \src, \src + mov \dst, \tmp +#endif + .endm #if defined(__XTENSA_WINDOWED_ABI__) diff --git a/arch/xtensa/include/asm/barrier.h b/arch/xtensa/include/asm/barrier.h index d6f8d4ddc2bc..898ea397e9bc 100644 --- a/arch/xtensa/include/asm/barrier.h +++ b/arch/xtensa/include/asm/barrier.h @@ -11,9 +11,15 @@ #include <asm/core.h> -#define mb() ({ __asm__ __volatile__("memw" : : : "memory"); }) -#define rmb() barrier() -#define wmb() mb() +#define __mb() ({ __asm__ __volatile__("memw" : : : "memory"); }) +#define __rmb() barrier() +#define __wmb() __mb() + +#ifdef CONFIG_SMP +#define __smp_mb() __mb() +#define __smp_rmb() __rmb() +#define __smp_wmb() __wmb() +#endif #if XCHAL_HAVE_S32C1I #define __smp_mb__before_atomic() barrier() diff --git a/arch/xtensa/include/asm/bitops.h b/arch/xtensa/include/asm/bitops.h index 3f71d364ba90..e02ec5833389 100644 --- a/arch/xtensa/include/asm/bitops.h +++ b/arch/xtensa/include/asm/bitops.h @@ -99,7 +99,7 @@ static inline unsigned long __fls(unsigned long word) #if XCHAL_HAVE_EXCLUSIVE #define BIT_OP(op, insn, inv) \ -static inline void op##_bit(unsigned int bit, volatile unsigned long *p)\ +static inline void arch_##op##_bit(unsigned int bit, volatile unsigned long *p)\ { \ unsigned long tmp; \ unsigned long mask = 1UL << (bit & 31); \ @@ -119,7 +119,7 @@ static inline void op##_bit(unsigned int bit, volatile unsigned long *p)\ #define TEST_AND_BIT_OP(op, insn, inv) \ static inline int \ -test_and_##op##_bit(unsigned int bit, volatile unsigned long *p) \ +arch_test_and_##op##_bit(unsigned int bit, volatile unsigned long *p) \ { \ unsigned long tmp, value; \ unsigned long mask = 1UL << (bit & 31); \ @@ -142,7 +142,7 @@ test_and_##op##_bit(unsigned int bit, volatile unsigned long *p) \ #elif XCHAL_HAVE_S32C1I #define BIT_OP(op, insn, inv) \ -static inline void op##_bit(unsigned int bit, volatile unsigned long *p)\ +static inline void arch_##op##_bit(unsigned int bit, volatile unsigned long *p)\ { \ unsigned long tmp, value; \ unsigned long mask = 1UL << (bit & 31); \ @@ -163,7 +163,7 @@ static inline void op##_bit(unsigned int bit, volatile unsigned long *p)\ #define TEST_AND_BIT_OP(op, insn, inv) \ static inline int \ -test_and_##op##_bit(unsigned int bit, volatile unsigned long *p) \ +arch_test_and_##op##_bit(unsigned int bit, volatile unsigned long *p) \ { \ unsigned long tmp, value; \ unsigned long mask = 1UL << (bit & 31); \ @@ -205,7 +205,8 @@ BIT_OPS(change, "xor", ) #undef BIT_OP #undef TEST_AND_BIT_OP -#include <asm-generic/bitops/find.h> +#include <asm-generic/bitops/instrumented-atomic.h> + #include <asm-generic/bitops/le.h> #include <asm-generic/bitops/ext2-atomic-setbit.h> diff --git a/arch/xtensa/include/asm/bootparam.h b/arch/xtensa/include/asm/bootparam.h index 892aab399ac8..6333bd1eb9d2 100644 --- a/arch/xtensa/include/asm/bootparam.h +++ b/arch/xtensa/include/asm/bootparam.h @@ -34,7 +34,7 @@ typedef struct bp_tag { unsigned short id; /* tag id */ unsigned short size; /* size of this record excluding the structure*/ - unsigned long data[0]; /* data */ + unsigned long data[]; /* data */ } bp_tag_t; struct bp_meminfo { diff --git a/arch/xtensa/include/asm/coprocessor.h b/arch/xtensa/include/asm/coprocessor.h index 0fbe2a740b8d..3b1a0d5d2169 100644 --- a/arch/xtensa/include/asm/coprocessor.h +++ b/arch/xtensa/include/asm/coprocessor.h @@ -142,11 +142,12 @@ typedef struct { XCHAL_CP6_SA_LIST(2) } xtregs_cp6_t typedef struct { XCHAL_CP7_SA_LIST(2) } xtregs_cp7_t __attribute__ ((aligned (XCHAL_CP7_SA_ALIGN))); -extern struct thread_info* coprocessor_owner[XCHAL_CP_MAX]; -extern void coprocessor_flush(struct thread_info*, int); - -extern void coprocessor_release_all(struct thread_info*); -extern void coprocessor_flush_all(struct thread_info*); +struct thread_info; +void coprocessor_flush(struct thread_info *ti, int cp_index); +void coprocessor_release_all(struct thread_info *ti); +void coprocessor_flush_all(struct thread_info *ti); +void coprocessor_flush_release_all(struct thread_info *ti); +void local_coprocessors_flush_release_all(void); #endif /* XTENSA_HAVE_COPROCESSORS */ diff --git a/arch/xtensa/include/asm/core.h b/arch/xtensa/include/asm/core.h index 9138077e567d..f856d2bcb9f3 100644 --- a/arch/xtensa/include/asm/core.h +++ b/arch/xtensa/include/asm/core.h @@ -37,4 +37,11 @@ #endif #endif +/* Xtensa ABI requires stack alignment to be at least 16 */ +#if XCHAL_DATA_WIDTH > 16 +#define XTENSA_STACK_ALIGNMENT XCHAL_DATA_WIDTH +#else +#define XTENSA_STACK_ALIGNMENT 16 +#endif + #endif diff --git a/arch/xtensa/include/asm/current.h b/arch/xtensa/include/asm/current.h index 5d98a7ad4251..08010dbf5e09 100644 --- a/arch/xtensa/include/asm/current.h +++ b/arch/xtensa/include/asm/current.h @@ -26,6 +26,8 @@ static inline struct task_struct *get_current(void) #define current get_current() +register unsigned long current_stack_pointer __asm__("a1"); + #else #define GET_CURRENT(reg,sp) \ diff --git a/arch/xtensa/include/asm/dma.h b/arch/xtensa/include/asm/dma.h index bb099a373b5a..172644539032 100644 --- a/arch/xtensa/include/asm/dma.h +++ b/arch/xtensa/include/asm/dma.h @@ -52,11 +52,4 @@ extern int request_dma(unsigned int dmanr, const char * device_id); extern void free_dma(unsigned int dmanr); -#ifdef CONFIG_PCI -extern int isa_dma_bridge_buggy; -#else -#define isa_dma_bridge_buggy (0) -#endif - - #endif diff --git a/arch/xtensa/include/asm/elf.h b/arch/xtensa/include/asm/elf.h index 909a6ab4f22b..ffcf1ada19c6 100644 --- a/arch/xtensa/include/asm/elf.h +++ b/arch/xtensa/include/asm/elf.h @@ -93,6 +93,10 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; #define elf_check_arch(x) ( ( (x)->e_machine == EM_XTENSA ) || \ ( (x)->e_machine == EM_XTENSA_OLD ) ) +#define ELFOSABI_XTENSA_FDPIC 65 +#define elf_check_fdpic(x) ((x)->e_ident[EI_OSABI] == ELFOSABI_XTENSA_FDPIC) +#define ELF_FDPIC_CORE_EFLAGS 0 + /* * These are used to set parameters in the core dumps. */ @@ -153,10 +157,22 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; */ #define ELF_PLAT_INIT(_r, load_addr) \ - do { _r->areg[0]=0; /*_r->areg[1]=0;*/ _r->areg[2]=0; _r->areg[3]=0; \ - _r->areg[4]=0; _r->areg[5]=0; _r->areg[6]=0; _r->areg[7]=0; \ - _r->areg[8]=0; _r->areg[9]=0; _r->areg[10]=0; _r->areg[11]=0; \ - _r->areg[12]=0; _r->areg[13]=0; _r->areg[14]=0; _r->areg[15]=0; \ + do { \ + (_r)->areg[0] = 0; /*(_r)->areg[1] = 0;*/ \ + (_r)->areg[2] = 0; (_r)->areg[3] = 0; \ + (_r)->areg[4] = 0; (_r)->areg[5] = 0; \ + (_r)->areg[6] = 0; (_r)->areg[7] = 0; \ + (_r)->areg[8] = 0; (_r)->areg[9] = 0; \ + (_r)->areg[10] = 0; (_r)->areg[11] = 0; \ + (_r)->areg[12] = 0; (_r)->areg[13] = 0; \ + (_r)->areg[14] = 0; (_r)->areg[15] = 0; \ + } while (0) + +#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, dynamic_addr) \ + do { \ + (_r)->areg[4] = _exec_map_addr; \ + (_r)->areg[5] = _interp_map_addr; \ + (_r)->areg[6] = dynamic_addr; \ } while (0) typedef struct { diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h index 54188e69b988..a5b707e1c0f4 100644 --- a/arch/xtensa/include/asm/io.h +++ b/arch/xtensa/include/asm/io.h @@ -63,9 +63,6 @@ static inline void iounmap(volatile void __iomem *addr) xtensa_iounmap(addr); } -#define virt_to_bus virt_to_phys -#define bus_to_virt phys_to_virt - #endif /* CONFIG_MMU */ #include <asm-generic/io.h> diff --git a/arch/xtensa/include/asm/pci-bridge.h b/arch/xtensa/include/asm/pci-bridge.h index 405526912d9a..e320aa5bbedb 100644 --- a/arch/xtensa/include/asm/pci-bridge.h +++ b/arch/xtensa/include/asm/pci-bridge.h @@ -73,13 +73,4 @@ static inline void pcibios_init_resource(struct resource *res, res->child = NULL; } - -/* These are used for config access before all the PCI probing has been done. */ -int early_read_config_byte(struct pci_controller*, int, int, int, u8*); -int early_read_config_word(struct pci_controller*, int, int, int, u16*); -int early_read_config_dword(struct pci_controller*, int, int, int, u32*); -int early_write_config_byte(struct pci_controller*, int, int, int, u8); -int early_write_config_word(struct pci_controller*, int, int, int, u16); -int early_write_config_dword(struct pci_controller*, int, int, int, u32); - #endif /* _XTENSA_PCI_BRIDGE_H */ diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h index 8e2b48a268db..b56de9635b6c 100644 --- a/arch/xtensa/include/asm/pci.h +++ b/arch/xtensa/include/asm/pci.h @@ -43,7 +43,4 @@ #define ARCH_GENERIC_PCI_MMAP_RESOURCE 1 #define arch_can_pci_mmap_io() 1 -/* Generic PCI */ -#include <asm-generic/pci.h> - #endif /* _XTENSA_PCI_H */ diff --git a/arch/xtensa/include/asm/pgalloc.h b/arch/xtensa/include/asm/pgalloc.h index eeb2de3a89e5..7fc0f9126dd3 100644 --- a/arch/xtensa/include/asm/pgalloc.h +++ b/arch/xtensa/include/asm/pgalloc.h @@ -29,7 +29,7 @@ static inline pgd_t* pgd_alloc(struct mm_struct *mm) { - return (pgd_t*) __get_free_pages(GFP_KERNEL | __GFP_ZERO, PGD_ORDER); + return (pgd_t*) __get_free_page(GFP_KERNEL | __GFP_ZERO); } static inline void ptes_clear(pte_t *ptep) diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h index bd5aeb795567..54f577c13afa 100644 --- a/arch/xtensa/include/asm/pgtable.h +++ b/arch/xtensa/include/asm/pgtable.h @@ -57,7 +57,6 @@ #define PTRS_PER_PTE 1024 #define PTRS_PER_PTE_SHIFT 10 #define PTRS_PER_PGD 1024 -#define PGD_ORDER 0 #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) #define FIRST_USER_PGD_NR (FIRST_USER_ADDRESS >> PGDIR_SHIFT) @@ -200,24 +199,6 @@ * What follows is the closest we can get by reasonable means.. * See linux/mm/mmap.c for protection_map[] array that uses these definitions. */ -#define __P000 PAGE_NONE /* private --- */ -#define __P001 PAGE_READONLY /* private --r */ -#define __P010 PAGE_COPY /* private -w- */ -#define __P011 PAGE_COPY /* private -wr */ -#define __P100 PAGE_READONLY_EXEC /* private x-- */ -#define __P101 PAGE_READONLY_EXEC /* private x-r */ -#define __P110 PAGE_COPY_EXEC /* private xw- */ -#define __P111 PAGE_COPY_EXEC /* private xwr */ - -#define __S000 PAGE_NONE /* shared --- */ -#define __S001 PAGE_READONLY /* shared --r */ -#define __S010 PAGE_SHARED /* shared -w- */ -#define __S011 PAGE_SHARED /* shared -wr */ -#define __S100 PAGE_READONLY_EXEC /* shared x-- */ -#define __S101 PAGE_READONLY_EXEC /* shared x-r */ -#define __S110 PAGE_SHARED_EXEC /* shared xw- */ -#define __S111 PAGE_SHARED_EXEC /* shared xwr */ - #ifndef __ASSEMBLY__ #define pte_ERROR(e) \ @@ -241,6 +222,7 @@ static inline void paging_init(void) { } * The pmd contains the kernel virtual address of the pte page. */ #define pmd_page_vaddr(pmd) ((unsigned long)(pmd_val(pmd) & PAGE_MASK)) +#define pmd_pfn(pmd) (__pa(pmd_val(pmd)) >> PAGE_SHIFT) #define pmd_page(pmd) virt_to_page(pmd_val(pmd)) /* @@ -411,6 +393,10 @@ extern void update_mmu_cache(struct vm_area_struct * vma, typedef pte_t *pte_addr_t; +void update_mmu_tlb(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep); +#define __HAVE_ARCH_UPDATE_MMU_TLB + #endif /* !defined (__ASSEMBLY__) */ #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h index 37d3e9887fe7..228e4dff5fb2 100644 --- a/arch/xtensa/include/asm/processor.h +++ b/arch/xtensa/include/asm/processor.h @@ -18,11 +18,7 @@ #include <asm/types.h> #include <asm/regs.h> -/* Xtensa ABI requires stack alignment to be at least 16 */ - -#define STACK_ALIGN (XCHAL_DATA_WIDTH > 16 ? XCHAL_DATA_WIDTH : 16) - -#define ARCH_SLAB_MINALIGN STACK_ALIGN +#define ARCH_SLAB_MINALIGN XTENSA_STACK_ALIGNMENT /* * User space process size: 1 GB. @@ -152,18 +148,12 @@ */ #define SPILL_SLOT_CALL12(sp, reg) (*(((unsigned long *)(sp)) - 16 + (reg))) -typedef struct { - unsigned long seg; -} mm_segment_t; - struct thread_struct { /* kernel's return address and stack pointer for context switching */ unsigned long ra; /* kernel's a0: return address and window call size */ unsigned long sp; /* kernel's a1: stack pointer */ - mm_segment_t current_ds; /* see uaccess.h for example uses */ - /* struct xtensa_cpuinfo info; */ unsigned long bad_vaddr; /* last user fault */ @@ -186,7 +176,6 @@ struct thread_struct { { \ ra: 0, \ sp: sizeof(init_stack) + (long) &init_stack, \ - current_ds: {0}, \ /*info: {0}, */ \ bad_vaddr: 0, \ bad_uaddr: 0, \ @@ -216,9 +205,12 @@ struct thread_struct { #define start_thread(regs, new_pc, new_sp) \ do { \ unsigned long syscall = (regs)->syscall; \ + unsigned long current_aregs[16]; \ + memcpy(current_aregs, (regs)->areg, sizeof(current_aregs)); \ memset((regs), 0, sizeof(*(regs))); \ (regs)->pc = (new_pc); \ (regs)->ps = USER_PS_VALUE; \ + memcpy((regs)->areg, current_aregs, sizeof(current_aregs)); \ (regs)->areg[1] = (new_sp); \ (regs)->areg[0] = 0; \ (regs)->wmask = 1; \ @@ -232,9 +224,6 @@ struct thread_struct { struct task_struct; struct mm_struct; -/* Free all resources held by a thread. */ -#define release_thread(thread) do { } while(0) - extern unsigned long __get_wchan(struct task_struct *p); #define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc) @@ -246,8 +235,8 @@ extern unsigned long __get_wchan(struct task_struct *p); #define xtensa_set_sr(x, sr) \ ({ \ - unsigned int v = (unsigned int)(x); \ - __asm__ __volatile__ ("wsr %0, "__stringify(sr) :: "a"(v)); \ + __asm__ __volatile__ ("wsr %0, "__stringify(sr) :: \ + "a"((unsigned int)(x))); \ }) #define xtensa_get_sr(sr) \ @@ -257,6 +246,13 @@ extern unsigned long __get_wchan(struct task_struct *p); v; \ }) +#define xtensa_xsr(x, sr) \ + ({ \ + unsigned int __v__ = (unsigned int)(x); \ + __asm__ __volatile__ ("xsr %0, " __stringify(sr) : "+a"(__v__)); \ + __v__; \ + }) + #if XCHAL_HAVE_EXTERN_REGS static inline void set_er(unsigned long value, unsigned long addr) diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h index b109416dc07e..308f209a4740 100644 --- a/arch/xtensa/include/asm/ptrace.h +++ b/arch/xtensa/include/asm/ptrace.h @@ -44,6 +44,7 @@ #ifndef __ASSEMBLY__ #include <asm/coprocessor.h> +#include <asm/core.h> /* * This struct defines the way the registers are stored on the @@ -77,14 +78,12 @@ struct pt_regs { /* current register frame. * Note: The ESF for kernel exceptions ends after 16 registers! */ - unsigned long areg[16]; + unsigned long areg[XCHAL_NUM_AREGS]; }; -#include <asm/core.h> - # define arch_has_single_step() (1) # define task_pt_regs(tsk) ((struct pt_regs*) \ - (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1) + (task_stack_page(tsk) + KERNEL_STACK_SIZE) - 1) # define user_mode(regs) (((regs)->ps & 0x00000020)!=0) # define instruction_pointer(regs) ((regs)->pc) # define return_pointer(regs) (MAKE_PC_FROM_RA((regs)->areg[0], \ diff --git a/arch/xtensa/include/asm/sections.h b/arch/xtensa/include/asm/sections.h index a8c42d08e281..3bc6b9afa993 100644 --- a/arch/xtensa/include/asm/sections.h +++ b/arch/xtensa/include/asm/sections.h @@ -29,7 +29,7 @@ extern char _Level5InterruptVector_text_end[]; extern char _Level6InterruptVector_text_start[]; extern char _Level6InterruptVector_text_end[]; #endif -#ifdef CONFIG_SMP +#ifdef CONFIG_SECONDARY_RESET_VECTOR extern char _SecondaryResetVector_text_start[]; extern char _SecondaryResetVector_text_end[]; #endif diff --git a/arch/xtensa/include/asm/stacktrace.h b/arch/xtensa/include/asm/stacktrace.h index fe06e8ed162b..a85e785a6288 100644 --- a/arch/xtensa/include/asm/stacktrace.h +++ b/arch/xtensa/include/asm/stacktrace.h @@ -19,14 +19,14 @@ struct stackframe { static __always_inline unsigned long *stack_pointer(struct task_struct *task) { - unsigned long *sp; + unsigned long sp; if (!task || task == current) - __asm__ __volatile__ ("mov %0, a1\n" : "=a"(sp)); + sp = current_stack_pointer; else - sp = (unsigned long *)task->thread.sp; + sp = task->thread.sp; - return sp; + return (unsigned long *)sp; } void walk_stackframe(unsigned long *sp, diff --git a/arch/xtensa/include/asm/thread_info.h b/arch/xtensa/include/asm/thread_info.h index a312333a9add..326db1c1d5d8 100644 --- a/arch/xtensa/include/asm/thread_info.h +++ b/arch/xtensa/include/asm/thread_info.h @@ -52,14 +52,21 @@ struct thread_info { __u32 cpu; /* current CPU */ __s32 preempt_count; /* 0 => preemptable,< 0 => BUG*/ - mm_segment_t addr_limit; /* thread address space */ - - unsigned long cpenable; #if XCHAL_HAVE_EXCLUSIVE /* result of the most recent exclusive store */ unsigned long atomctl8; #endif +#ifdef CONFIG_USER_ABI_CALL0_PROBE + /* Address where PS.WOE was enabled by the ABI probing code */ + unsigned long ps_woe_fix_addr; +#endif + /* + * If i-th bit is set then coprocessor state is loaded into the + * coprocessor i on CPU cp_owner_cpu. + */ + unsigned long cpenable; + u32 cp_owner_cpu; /* Allocate storage for extra user states and coprocessor states. */ #if XTENSA_HAVE_COPROCESSORS xtregs_coprocessor_t xtregs_cp; @@ -81,7 +88,6 @@ struct thread_info { .flags = 0, \ .cpu = 0, \ .preempt_count = INIT_PREEMPT_COUNT, \ - .addr_limit = KERNEL_DS, \ } /* how to get the thread information struct from C */ diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h index 233ec75e60c6..3f2462f2d027 100644 --- a/arch/xtensa/include/asm/timex.h +++ b/arch/xtensa/include/asm/timex.h @@ -29,10 +29,6 @@ extern unsigned long ccount_freq; -typedef unsigned long long cycles_t; - -#define get_cycles() (0) - void local_timer_setup(unsigned cpu); /* @@ -59,4 +55,6 @@ static inline void set_linux_timer (unsigned long ccompare) xtensa_set_sr(ccompare, SREG_CCOMPARE + LINUX_TIMER); } +#include <asm-generic/timex.h> + #endif /* _XTENSA_TIMEX_H */ diff --git a/arch/xtensa/include/asm/traps.h b/arch/xtensa/include/asm/traps.h index 6fa47cd8e02d..6f74ccc0c7ea 100644 --- a/arch/xtensa/include/asm/traps.h +++ b/arch/xtensa/include/asm/traps.h @@ -12,6 +12,8 @@ #include <asm/ptrace.h> +typedef void xtensa_exception_handler(struct pt_regs *regs); + /* * Per-CPU exception handling data structure. * EXCSAVE1 points to it. @@ -25,31 +27,47 @@ struct exc_table { void *fixup; /* For passing a parameter to fixup */ void *fixup_param; +#if XTENSA_HAVE_COPROCESSORS + /* Pointers to owner struct thread_info */ + struct thread_info *coprocessor_owner[XCHAL_CP_MAX]; +#endif /* Fast user exception handlers */ void *fast_user_handler[EXCCAUSE_N]; /* Fast kernel exception handlers */ void *fast_kernel_handler[EXCCAUSE_N]; /* Default C-Handlers */ - void *default_handler[EXCCAUSE_N]; + xtensa_exception_handler *default_handler[EXCCAUSE_N]; }; -/* - * handler must be either of the following: - * void (*)(struct pt_regs *regs); - * void (*)(struct pt_regs *regs, unsigned long exccause); - */ -extern void * __init trap_set_handler(int cause, void *handler); -extern void do_unhandled(struct pt_regs *regs, unsigned long exccause); -void fast_second_level_miss(void); +DECLARE_PER_CPU(struct exc_table, exc_table); + +xtensa_exception_handler * +__init trap_set_handler(int cause, xtensa_exception_handler *handler); + +asmlinkage void fast_illegal_instruction_user(void); +asmlinkage void fast_syscall_user(void); +asmlinkage void fast_alloca(void); +asmlinkage void fast_unaligned(void); +asmlinkage void fast_second_level_miss(void); +asmlinkage void fast_store_prohibited(void); +asmlinkage void fast_coprocessor(void); + +asmlinkage void kernel_exception(void); +asmlinkage void user_exception(void); +asmlinkage void system_call(struct pt_regs *regs); + +void do_IRQ(int hwirq, struct pt_regs *regs); +void do_page_fault(struct pt_regs *regs); +void do_unhandled(struct pt_regs *regs); /* Initialize minimal exc_table structure sufficient for basic paging */ static inline void __init early_trap_init(void) { - static struct exc_table exc_table __initdata = { + static struct exc_table init_exc_table __initdata = { .fast_kernel_handler[EXCCAUSE_DTLB_MISS] = fast_second_level_miss, }; - __asm__ __volatile__("wsr %0, excsave1\n" : : "a" (&exc_table)); + xtensa_set_sr(&init_exc_table, excsave1); } void secondary_trap_init(void); diff --git a/arch/xtensa/include/asm/uaccess.h b/arch/xtensa/include/asm/uaccess.h index 75bd8fbf52ba..56aec6d504fe 100644 --- a/arch/xtensa/include/asm/uaccess.h +++ b/arch/xtensa/include/asm/uaccess.h @@ -19,31 +19,7 @@ #include <linux/prefetch.h> #include <asm/types.h> #include <asm/extable.h> - -/* - * The fs value determines whether argument validity checking should - * be performed or not. If get_fs() == USER_DS, checking is - * performed, with get_fs() == KERNEL_DS, checking is bypassed. - * - * For historical reasons (Data Segment Register?), these macros are - * grossly misnamed. - */ - -#define KERNEL_DS ((mm_segment_t) { 0 }) -#define USER_DS ((mm_segment_t) { 1 }) - -#define get_fs() (current->thread.current_ds) -#define set_fs(val) (current->thread.current_ds = (val)) - -#define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg) - -#define __kernel_ok (uaccess_kernel()) -#define __user_ok(addr, size) \ - (((size) <= TASK_SIZE)&&((addr) <= TASK_SIZE-(size))) -#define __access_ok(addr, size) (__kernel_ok || __user_ok((addr), (size))) -#define access_ok(addr, size) __access_ok((unsigned long)(addr), (size)) - -#define user_addr_max() (uaccess_kernel() ? ~0UL : TASK_SIZE) +#include <asm-generic/access_ok.h> /* * These are the main single-value transfer routines. They |