diff options
Diffstat (limited to 'arch/xtensa/include')
24 files changed, 506 insertions, 152 deletions
diff --git a/arch/xtensa/include/asm/Kbuild b/arch/xtensa/include/asm/Kbuild index 228d6ae..0a337e4 100644 --- a/arch/xtensa/include/asm/Kbuild +++ b/arch/xtensa/include/asm/Kbuild @@ -8,7 +8,6 @@ generic-y += emergency-restart.h generic-y += errno.h generic-y += exec.h generic-y += fcntl.h -generic-y += futex.h generic-y += hardirq.h generic-y += ioctl.h generic-y += irq_regs.h @@ -29,3 +28,4 @@ generic-y += topology.h generic-y += trace_clock.h generic-y += xor.h generic-y += preempt.h +generic-y += hash.h diff --git a/arch/xtensa/include/asm/barrier.h b/arch/xtensa/include/asm/barrier.h index e1ee6b5..0a24b04 100644 --- a/arch/xtensa/include/asm/barrier.h +++ b/arch/xtensa/include/asm/barrier.h @@ -13,10 +13,6 @@ #define rmb() barrier() #define wmb() mb() -#ifdef CONFIG_SMP -#error smp_* not defined -#endif - #include <asm-generic/barrier.h> #endif /* _XTENSA_SYSTEM_H */ diff --git a/arch/xtensa/include/asm/bitops.h b/arch/xtensa/include/asm/bitops.h index 84afe58d..7b6873a 100644 --- a/arch/xtensa/include/asm/bitops.h +++ b/arch/xtensa/include/asm/bitops.h @@ -22,12 +22,8 @@ #include <asm/processor.h> #include <asm/byteorder.h> -#ifdef CONFIG_SMP -# error SMP not supported on this architecture -#endif - -#define smp_mb__before_clear_bit() barrier() -#define smp_mb__after_clear_bit() barrier() +#define smp_mb__before_clear_bit() smp_mb() +#define smp_mb__after_clear_bit() smp_mb() #include <asm-generic/bitops/non-atomic.h> diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h index 127cd48..555a98a 100644 --- a/arch/xtensa/include/asm/cacheflush.h +++ b/arch/xtensa/include/asm/cacheflush.h @@ -1,18 +1,14 @@ /* - * include/asm-xtensa/cacheflush.h - * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * - * (C) 2001 - 2007 Tensilica Inc. + * (C) 2001 - 2013 Tensilica Inc. */ #ifndef _XTENSA_CACHEFLUSH_H #define _XTENSA_CACHEFLUSH_H -#ifdef __KERNEL__ - #include <linux/mm.h> #include <asm/processor.h> #include <asm/page.h> @@ -51,7 +47,6 @@ extern void __invalidate_icache_page(unsigned long); extern void __invalidate_icache_range(unsigned long, unsigned long); extern void __invalidate_dcache_range(unsigned long, unsigned long); - #if XCHAL_DCACHE_IS_WRITEBACK extern void __flush_invalidate_dcache_all(void); extern void __flush_dcache_page(unsigned long); @@ -87,9 +82,22 @@ static inline void __invalidate_icache_page_alias(unsigned long virt, * (see also Documentation/cachetlb.txt) */ -#if (DCACHE_WAY_SIZE > PAGE_SIZE) +#if (DCACHE_WAY_SIZE > PAGE_SIZE) || defined(CONFIG_SMP) + +#ifdef CONFIG_SMP +void flush_cache_all(void); +void flush_cache_range(struct vm_area_struct*, ulong, ulong); +void flush_icache_range(unsigned long start, unsigned long end); +void flush_cache_page(struct vm_area_struct*, + unsigned long, unsigned long); +#else +#define flush_cache_all local_flush_cache_all +#define flush_cache_range local_flush_cache_range +#define flush_icache_range local_flush_icache_range +#define flush_cache_page local_flush_cache_page +#endif -#define flush_cache_all() \ +#define local_flush_cache_all() \ do { \ __flush_invalidate_dcache_all(); \ __invalidate_icache_all(); \ @@ -103,9 +111,11 @@ static inline void __invalidate_icache_page_alias(unsigned long virt, #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 extern void flush_dcache_page(struct page*); -extern void flush_cache_range(struct vm_area_struct*, ulong, ulong); -extern void flush_cache_page(struct vm_area_struct*, - unsigned long, unsigned long); + +void local_flush_cache_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end); +void local_flush_cache_page(struct vm_area_struct *vma, + unsigned long address, unsigned long pfn); #else @@ -119,13 +129,14 @@ extern void flush_cache_page(struct vm_area_struct*, #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 #define flush_dcache_page(page) do { } while (0) -#define flush_cache_page(vma,addr,pfn) do { } while (0) -#define flush_cache_range(vma,start,end) do { } while (0) +#define flush_icache_range local_flush_icache_range +#define flush_cache_page(vma, addr, pfn) do { } while (0) +#define flush_cache_range(vma, start, end) do { } while (0) #endif /* Ensure consistency between data and instruction cache. */ -#define flush_icache_range(start,end) \ +#define local_flush_icache_range(start, end) \ do { \ __flush_dcache_range(start, (end) - (start)); \ __invalidate_icache_range(start,(end) - (start)); \ @@ -253,5 +264,4 @@ static inline void flush_invalidate_dcache_unaligned(u32 addr, u32 size) } } -#endif /* __KERNEL__ */ #endif /* _XTENSA_CACHEFLUSH_H */ diff --git a/arch/xtensa/include/asm/delay.h b/arch/xtensa/include/asm/delay.h index 3899610c..24304b3 100644 --- a/arch/xtensa/include/asm/delay.h +++ b/arch/xtensa/include/asm/delay.h @@ -19,23 +19,57 @@ extern unsigned long loops_per_jiffy; static inline void __delay(unsigned long loops) { - /* 2 cycles per loop. */ - __asm__ __volatile__ ("1: addi %0, %0, -2; bgeui %0, 2, 1b" - : "=r" (loops) : "0" (loops)); + if (__builtin_constant_p(loops) && loops < 2) + __asm__ __volatile__ ("nop"); + else if (loops >= 2) + /* 2 cycles per loop. */ + __asm__ __volatile__ ("1: addi %0, %0, -2; bgeui %0, 2, 1b" + : "+r" (loops)); } -/* For SMP/NUMA systems, change boot_cpu_data to something like - * local_cpu_data->... where local_cpu_data points to the current - * cpu. */ +/* Undefined function to get compile-time error */ +void __bad_udelay(void); +void __bad_ndelay(void); -static __inline__ void udelay (unsigned long usecs) +#define __MAX_UDELAY 30000 +#define __MAX_NDELAY 30000 + +static inline void __udelay(unsigned long usecs) { unsigned long start = get_ccount(); - unsigned long cycles = usecs * (loops_per_jiffy / (1000000UL / HZ)); + unsigned long cycles = (usecs * (ccount_freq >> 15)) >> 5; /* Note: all variables are unsigned (can wrap around)! */ while (((unsigned long)get_ccount()) - start < cycles) - ; + cpu_relax(); +} + +static inline void udelay(unsigned long usec) +{ + if (__builtin_constant_p(usec) && usec >= __MAX_UDELAY) + __bad_udelay(); + else + __udelay(usec); +} + +static inline void __ndelay(unsigned long nsec) +{ + /* + * Inner shift makes sure multiplication doesn't overflow + * for legitimate nsec values + */ + unsigned long cycles = (nsec * (ccount_freq >> 15)) >> 15; + __delay(cycles); +} + +#define ndelay(n) ndelay(n) + +static inline void ndelay(unsigned long nsec) +{ + if (__builtin_constant_p(nsec) && nsec >= __MAX_NDELAY) + __bad_ndelay(); + else + __ndelay(nsec); } #endif diff --git a/arch/xtensa/include/asm/ftrace.h b/arch/xtensa/include/asm/ftrace.h index 73cc3f4..736b9d2 100644 --- a/arch/xtensa/include/asm/ftrace.h +++ b/arch/xtensa/include/asm/ftrace.h @@ -18,7 +18,7 @@ __asm__ __volatile__ ( \ "mov %0, a0\n" \ "mov %1, a1\n" \ - : "=r"(a0), "=r"(a1) : : ); \ + : "=r"(a0), "=r"(a1)); \ MAKE_PC_FROM_RA(a0, a1); }) #ifdef CONFIG_FRAME_POINTER extern unsigned long return_address(unsigned level); diff --git a/arch/xtensa/include/asm/futex.h b/arch/xtensa/include/asm/futex.h new file mode 100644 index 0000000..b39531b --- /dev/null +++ b/arch/xtensa/include/asm/futex.h @@ -0,0 +1,147 @@ +/* + * Atomic futex routines + * + * Based on the PowerPC implementataion + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Copyright (C) 2013 TangoTec Ltd. + * + * Baruch Siach <baruch@tkos.co.il> + */ + +#ifndef _ASM_XTENSA_FUTEX_H +#define _ASM_XTENSA_FUTEX_H + +#ifdef __KERNEL__ + +#include <linux/futex.h> +#include <linux/uaccess.h> +#include <linux/errno.h> + +#define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \ + __asm__ __volatile( \ + "1: l32i %0, %2, 0\n" \ + insn "\n" \ + " wsr %0, scompare1\n" \ + "2: s32c1i %1, %2, 0\n" \ + " bne %1, %0, 1b\n" \ + " movi %1, 0\n" \ + "3:\n" \ + " .section .fixup,\"ax\"\n" \ + " .align 4\n" \ + "4: .long 3b\n" \ + "5: l32r %0, 4b\n" \ + " movi %1, %3\n" \ + " jx %0\n" \ + " .previous\n" \ + " .section __ex_table,\"a\"\n" \ + " .long 1b,5b,2b,5b\n" \ + " .previous\n" \ + : "=&r" (oldval), "=&r" (ret) \ + : "r" (uaddr), "I" (-EFAULT), "r" (oparg) \ + : "memory") + +static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr) +{ + int op = (encoded_op >> 28) & 7; + int cmp = (encoded_op >> 24) & 15; + int oparg = (encoded_op << 8) >> 20; + int cmparg = (encoded_op << 20) >> 20; + int oldval = 0, ret; + if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) + oparg = 1 << oparg; + + if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) + return -EFAULT; + +#if !XCHAL_HAVE_S32C1I + return -ENOSYS; +#endif + + pagefault_disable(); + + switch (op) { + case FUTEX_OP_SET: + __futex_atomic_op("mov %1, %4", ret, oldval, uaddr, oparg); + break; + case FUTEX_OP_ADD: + __futex_atomic_op("add %1, %0, %4", ret, oldval, uaddr, + oparg); + break; + case FUTEX_OP_OR: + __futex_atomic_op("or %1, %0, %4", ret, oldval, uaddr, + oparg); + break; + case FUTEX_OP_ANDN: + __futex_atomic_op("and %1, %0, %4", ret, oldval, uaddr, + ~oparg); + break; + case FUTEX_OP_XOR: + __futex_atomic_op("xor %1, %0, %4", ret, oldval, uaddr, + oparg); + break; + default: + ret = -ENOSYS; + } + + pagefault_enable(); + + if (ret) + return ret; + + switch (cmp) { + case FUTEX_OP_CMP_EQ: return (oldval == cmparg); + case FUTEX_OP_CMP_NE: return (oldval != cmparg); + case FUTEX_OP_CMP_LT: return (oldval < cmparg); + case FUTEX_OP_CMP_GE: return (oldval >= cmparg); + case FUTEX_OP_CMP_LE: return (oldval <= cmparg); + case FUTEX_OP_CMP_GT: return (oldval > cmparg); + } + + return -ENOSYS; +} + +static inline int +futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, + u32 oldval, u32 newval) +{ + int ret = 0; + u32 prev; + + if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) + return -EFAULT; + +#if !XCHAL_HAVE_S32C1I + return -ENOSYS; +#endif + + __asm__ __volatile__ ( + " # futex_atomic_cmpxchg_inatomic\n" + "1: l32i %1, %3, 0\n" + " mov %0, %5\n" + " wsr %1, scompare1\n" + "2: s32c1i %0, %3, 0\n" + "3:\n" + " .section .fixup,\"ax\"\n" + " .align 4\n" + "4: .long 3b\n" + "5: l32r %1, 4b\n" + " movi %0, %6\n" + " jx %1\n" + " .previous\n" + " .section __ex_table,\"a\"\n" + " .long 1b,5b,2b,5b\n" + " .previous\n" + : "+r" (ret), "=&r" (prev), "+m" (*uaddr) + : "r" (uaddr), "r" (oldval), "r" (newval), "I" (-EFAULT) + : "memory"); + + *uval = prev; + return ret; +} + +#endif /* __KERNEL__ */ +#endif /* _ASM_XTENSA_FUTEX_H */ diff --git a/arch/xtensa/include/asm/initialize_mmu.h b/arch/xtensa/include/asm/initialize_mmu.h index 722553f..600781e 100644 --- a/arch/xtensa/include/asm/initialize_mmu.h +++ b/arch/xtensa/include/asm/initialize_mmu.h @@ -26,6 +26,9 @@ #include <asm/pgtable.h> #include <asm/vectors.h> +#define CA_BYPASS (_PAGE_CA_BYPASS | _PAGE_HW_WRITE | _PAGE_HW_EXEC) +#define CA_WRITEBACK (_PAGE_CA_WB | _PAGE_HW_WRITE | _PAGE_HW_EXEC) + #ifdef __ASSEMBLY__ #define XTENSA_HWVERSION_RC_2009_0 230000 @@ -80,8 +83,6 @@ /* Step 2: map 0x40000000..0x47FFFFFF to paddr containing this code * and jump to the new mapping. */ -#define CA_BYPASS (_PAGE_CA_BYPASS | _PAGE_HW_WRITE | _PAGE_HW_EXEC) -#define CA_WRITEBACK (_PAGE_CA_WB | _PAGE_HW_WRITE | _PAGE_HW_EXEC) srli a3, a0, 27 slli a3, a3, 27 @@ -123,13 +124,13 @@ wdtlb a4, a5 witlb a4, a5 - movi a5, 0xe0000006 - movi a4, 0xf0000000 + CA_WRITEBACK + movi a5, XCHAL_KIO_CACHED_VADDR + 6 + movi a4, XCHAL_KIO_DEFAULT_PADDR + CA_WRITEBACK wdtlb a4, a5 witlb a4, a5 - movi a5, 0xf0000006 - movi a4, 0xf0000000 + CA_BYPASS + movi a5, XCHAL_KIO_BYPASS_VADDR + 6 + movi a4, XCHAL_KIO_DEFAULT_PADDR + CA_BYPASS wdtlb a4, a5 witlb a4, a5 diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h index 700c2e6..2a042d4 100644 --- a/arch/xtensa/include/asm/io.h +++ b/arch/xtensa/include/asm/io.h @@ -14,20 +14,26 @@ #ifdef __KERNEL__ #include <asm/byteorder.h> #include <asm/page.h> +#include <asm/vectors.h> #include <linux/bug.h> #include <linux/kernel.h> #include <linux/types.h> -#define XCHAL_KIO_CACHED_VADDR 0xe0000000 -#define XCHAL_KIO_BYPASS_VADDR 0xf0000000 -#define XCHAL_KIO_PADDR 0xf0000000 -#define XCHAL_KIO_SIZE 0x10000000 - #define IOADDR(x) (XCHAL_KIO_BYPASS_VADDR + (x)) #define IO_SPACE_LIMIT ~0 #ifdef CONFIG_MMU + +#if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY && CONFIG_OF +extern unsigned long xtensa_kio_paddr; + +static inline unsigned long xtensa_get_kio_paddr(void) +{ + return xtensa_kio_paddr; +} +#endif + /* * Return the virtual address for the specified bus memory. * Note that we currently don't support any address outside the KIO segment. diff --git a/arch/xtensa/include/asm/irq.h b/arch/xtensa/include/asm/irq.h index 4c0ccc9..f71f88e 100644 --- a/arch/xtensa/include/asm/irq.h +++ b/arch/xtensa/include/asm/irq.h @@ -43,5 +43,14 @@ static __inline__ int irq_canonicalize(int irq) } struct irqaction; +struct irq_domain; + +void migrate_irqs(void); +int xtensa_irq_domain_xlate(const u32 *intspec, unsigned int intsize, + unsigned long int_irq, unsigned long ext_irq, + unsigned long *out_hwirq, unsigned int *out_type); +int xtensa_irq_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw); +unsigned xtensa_map_ext_irq(unsigned ext_irq); +unsigned xtensa_get_ext_irq_no(unsigned irq); #endif /* _XTENSA_IRQ_H */ diff --git a/arch/xtensa/include/asm/mmu.h b/arch/xtensa/include/asm/mmu.h index 8554b2c..71afe41 100644 --- a/arch/xtensa/include/asm/mmu.h +++ b/arch/xtensa/include/asm/mmu.h @@ -1,11 +1,9 @@ /* - * include/asm-xtensa/mmu.h - * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2001 - 2005 Tensilica Inc. + * Copyright (C) 2001 - 2013 Tensilica Inc. */ #ifndef _XTENSA_MMU_H @@ -15,8 +13,10 @@ #include <asm-generic/mmu.h> #else -/* Default "unsigned long" context */ -typedef unsigned long mm_context_t; +typedef struct { + unsigned long asid[NR_CPUS]; + unsigned int cpu; +} mm_context_t; #endif /* CONFIG_MMU */ #endif /* _XTENSA_MMU_H */ diff --git a/arch/xtensa/include/asm/mmu_context.h b/arch/xtensa/include/asm/mmu_context.h index d43525a..d33c71a 100644 --- a/arch/xtensa/include/asm/mmu_context.h +++ b/arch/xtensa/include/asm/mmu_context.h @@ -1,13 +1,11 @@ /* - * include/asm-xtensa/mmu_context.h - * * Switch an MMU context. * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2001 - 2005 Tensilica Inc. + * Copyright (C) 2001 - 2013 Tensilica Inc. */ #ifndef _XTENSA_MMU_CONTEXT_H @@ -20,22 +18,25 @@ #include <linux/stringify.h> #include <linux/sched.h> -#include <variant/core.h> +#include <asm/vectors.h> #include <asm/pgtable.h> #include <asm/cacheflush.h> #include <asm/tlbflush.h> #include <asm-generic/mm_hooks.h> +#include <asm-generic/percpu.h> #if (XCHAL_HAVE_TLBS != 1) # error "Linux must have an MMU!" #endif -extern unsigned long asid_cache; +DECLARE_PER_CPU(unsigned long, asid_cache); +#define cpu_asid_cache(cpu) per_cpu(asid_cache, cpu) /* * NO_CONTEXT is the invalid ASID value that we don't ever assign to - * any user or kernel context. + * any user or kernel context. We use the reserved values in the + * ASID_INSERT macro below. * * 0 invalid * 1 kernel @@ -49,6 +50,12 @@ extern unsigned long asid_cache; #define ASID_MASK ((1 << XCHAL_MMU_ASID_BITS) - 1) #define ASID_INSERT(x) (0x03020001 | (((x) & ASID_MASK) << 8)) +#ifdef CONFIG_MMU +void init_mmu(void); +#else +static inline void init_mmu(void) { } +#endif + static inline void set_rasid_register (unsigned long val) { __asm__ __volatile__ (" wsr %0, rasid\n\t" @@ -62,64 +69,77 @@ static inline unsigned long get_rasid_register (void) return tmp; } -static inline void -__get_new_mmu_context(struct mm_struct *mm) +static inline void get_new_mmu_context(struct mm_struct *mm, unsigned int cpu) { - extern void flush_tlb_all(void); - if (! (++asid_cache & ASID_MASK) ) { - flush_tlb_all(); /* start new asid cycle */ - asid_cache += ASID_USER_FIRST; + unsigned long asid = cpu_asid_cache(cpu); + if ((++asid & ASID_MASK) == 0) { + /* + * Start new asid cycle; continue counting with next + * incarnation bits; skipping over 0, 1, 2, 3. + */ + local_flush_tlb_all(); + asid += ASID_USER_FIRST; } - mm->context = asid_cache; + cpu_asid_cache(cpu) = asid; + mm->context.asid[cpu] = asid; + mm->context.cpu = cpu; } -static inline void -__load_mmu_context(struct mm_struct *mm) +static inline void get_mmu_context(struct mm_struct *mm, unsigned int cpu) { - set_rasid_register(ASID_INSERT(mm->context)); + /* + * Check if our ASID is of an older version and thus invalid. + */ + + if (mm) { + unsigned long asid = mm->context.asid[cpu]; + + if (asid == NO_CONTEXT || + ((asid ^ cpu_asid_cache(cpu)) & ~ASID_MASK)) + get_new_mmu_context(mm, cpu); + } +} + +static inline void activate_context(struct mm_struct *mm, unsigned int cpu) +{ + get_mmu_context(mm, cpu); + set_rasid_register(ASID_INSERT(mm->context.asid[cpu])); invalidate_page_directory(); } /* * Initialize the context related info for a new mm_struct - * instance. + * instance. Valid cpu values are 0..(NR_CPUS-1), so initializing + * to -1 says the process has never run on any core. */ -static inline int -init_new_context(struct task_struct *tsk, struct mm_struct *mm) +static inline int init_new_context(struct task_struct *tsk, + struct mm_struct *mm) { - mm->context = NO_CONTEXT; + int cpu; + for_each_possible_cpu(cpu) { + mm->context.asid[cpu] = NO_CONTEXT; + } + mm->context.cpu = -1; return 0; } -/* - * After we have set current->mm to a new value, this activates - * the context for the new mm so we see the new mappings. - */ -static inline void -activate_mm(struct mm_struct *prev, struct mm_struct *next) -{ - /* Unconditionally get a new ASID. */ - - __get_new_mmu_context(next); - __load_mmu_context(next); -} - - static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk) { - unsigned long asid = asid_cache; - - /* Check if our ASID is of an older version and thus invalid */ - - if (next->context == NO_CONTEXT || ((next->context^asid) & ~ASID_MASK)) - __get_new_mmu_context(next); - - __load_mmu_context(next); + unsigned int cpu = smp_processor_id(); + int migrated = next->context.cpu != cpu; + /* Flush the icache if we migrated to a new core. */ + if (migrated) { + __invalidate_icache_all(); + next->context.cpu = cpu; + } + if (migrated || prev != next) + activate_context(next, cpu); } -#define deactivate_mm(tsk, mm) do { } while(0) +#define activate_mm(prev, next) switch_mm((prev), (next), NULL) +#define deactivate_mm(tsk, mm) do { } while (0) /* * Destroy context related info for an mm_struct that is about diff --git a/arch/xtensa/include/asm/mxregs.h b/arch/xtensa/include/asm/mxregs.h new file mode 100644 index 0000000..73dcc54 --- /dev/null +++ b/arch/xtensa/include/asm/mxregs.h @@ -0,0 +1,46 @@ +/* + * Xtensa MX interrupt distributor + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 - 2013 Tensilica Inc. + */ + +#ifndef _XTENSA_MXREGS_H +#define _XTENSA_MXREGS_H + +/* + * RER/WER at, as Read/write external register + * at: value + * as: address + * + * Address Value + * 00nn 0...0p..p Interrupt Routing, route IRQ n to processor p + * 01pp 0...0d..d 16 bits (d) 'ored' as single IPI to processor p + * 0180 0...0m..m Clear enable specified by mask (m) + * 0184 0...0m..m Set enable specified by mask (m) + * 0190 0...0x..x 8-bit IPI partition register + * VVVVVVVVPPPPUUUUUUUUUUUUUUUUU + * V (10-bit) Release/Version + * P ( 4-bit) Number of cores - 1 + * U (18-bit) ID + * 01a0 i.......i 32-bit ConfigID + * 0200 0...0m..m RunStall core 'n' + * 0220 c Cache coherency enabled + */ + +#define MIROUT(irq) (0x000 + (irq)) +#define MIPICAUSE(cpu) (0x100 + (cpu)) +#define MIPISET(cause) (0x140 + (cause)) +#define MIENG 0x180 +#define MIENGSET 0x184 +#define MIASG 0x188 /* Read Global Assert Register */ +#define MIASGSET 0x18c /* Set Global Addert Regiter */ +#define MIPIPART 0x190 +#define SYSCFGID 0x1a0 +#define MPSCORE 0x200 +#define CCON 0x220 + +#endif /* _XTENSA_MXREGS_H */ diff --git a/arch/xtensa/include/asm/perf_event.h b/arch/xtensa/include/asm/perf_event.h new file mode 100644 index 0000000..5aa4590 --- /dev/null +++ b/arch/xtensa/include/asm/perf_event.h @@ -0,0 +1,4 @@ +#ifndef __ASM_XTENSA_PERF_EVENT_H +#define __ASM_XTENSA_PERF_EVENT_H + +#endif /* __ASM_XTENSA_PERF_EVENT_H */ diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h index 7e409a5..abb5970 100644 --- a/arch/xtensa/include/asm/processor.h +++ b/arch/xtensa/include/asm/processor.h @@ -191,5 +191,25 @@ extern unsigned long get_wchan(struct task_struct *p); #define set_sr(x,sr) ({unsigned int v=(unsigned int)x; WSR(v,sr);}) #define get_sr(sr) ({unsigned int v; RSR(v,sr); v; }) +#ifndef XCHAL_HAVE_EXTERN_REGS +#define XCHAL_HAVE_EXTERN_REGS 0 +#endif + +#if XCHAL_HAVE_EXTERN_REGS + +static inline void set_er(unsigned long value, unsigned long addr) +{ + asm volatile ("wer %0, %1" : : "a" (value), "a" (addr) : "memory"); +} + +static inline unsigned long get_er(unsigned long addr) +{ + register unsigned long value; + asm volatile ("rer %0, %1" : "=a" (value) : "a" (addr) : "memory"); + return value; +} + +#endif /* XCHAL_HAVE_EXTERN_REGS */ + #endif /* __ASSEMBLY__ */ #endif /* _XTENSA_PROCESSOR_H */ diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h index 81f31bc..598e752 100644 --- a/arch/xtensa/include/asm/ptrace.h +++ b/arch/xtensa/include/asm/ptrace.h @@ -59,9 +59,17 @@ struct pt_regs { (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 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], \ + (regs)->areg[1])) # ifndef CONFIG_SMP # define profile_pc(regs) instruction_pointer(regs) +# else +# define profile_pc(regs) \ + ({ \ + in_lock_functions(instruction_pointer(regs)) ? \ + return_pointer(regs) : instruction_pointer(regs); \ + }) # endif #define user_stack_pointer(regs) ((regs)->areg[1]) diff --git a/arch/xtensa/include/asm/smp.h b/arch/xtensa/include/asm/smp.h index 83c569e..4e43f56 100644 --- a/arch/xtensa/include/asm/smp.h +++ b/arch/xtensa/include/asm/smp.h @@ -1,27 +1,43 @@ /* - * include/asm-xtensa/smp.h - * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2001 - 2005 Tensilica Inc. + * Copyright (C) 2001 - 2013 Tensilica Inc. */ #ifndef _XTENSA_SMP_H #define _XTENSA_SMP_H -extern struct xtensa_cpuinfo boot_cpu_data; +#ifdef CONFIG_SMP -#define cpu_data (&boot_cpu_data) -#define current_cpu_data boot_cpu_data +#define raw_smp_processor_id() (current_thread_info()->cpu) +#define cpu_logical_map(cpu) (cpu) -struct xtensa_cpuinfo { - unsigned long *pgd_cache; - unsigned long *pte_cache; - unsigned long pgtable_cache_sz; +struct start_info { + unsigned long stack; }; +extern struct start_info start_info; -#define cpu_logical_map(cpu) (cpu) +struct cpumask; +void arch_send_call_function_ipi_mask(const struct cpumask *mask); +void arch_send_call_function_single_ipi(int cpu); + +void smp_init_cpus(void); +void secondary_init_irq(void); +void ipi_init(void); +struct seq_file; +void show_ipi_list(struct seq_file *p, int prec); + +#ifdef CONFIG_HOTPLUG_CPU + +void __cpu_die(unsigned int cpu); +int __cpu_disable(void); +void cpu_die(void); +void cpu_restart(void); + +#endif /* CONFIG_HOTPLUG_CPU */ + +#endif /* CONFIG_SMP */ #endif /* _XTENSA_SMP_H */ diff --git a/arch/xtensa/include/asm/spinlock.h b/arch/xtensa/include/asm/spinlock.h index 0397590..1d95fa5 100644 --- a/arch/xtensa/include/asm/spinlock.h +++ b/arch/xtensa/include/asm/spinlock.h @@ -28,13 +28,13 @@ * 1 somebody owns the spinlock */ -#define __raw_spin_is_locked(x) ((x)->slock != 0) -#define __raw_spin_unlock_wait(lock) \ - do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) +#define arch_spin_is_locked(x) ((x)->slock != 0) +#define arch_spin_unlock_wait(lock) \ + do { while (arch_spin_is_locked(lock)) cpu_relax(); } while (0) -#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) +#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) -static inline void __raw_spin_lock(raw_spinlock_t *lock) +static inline void arch_spin_lock(arch_spinlock_t *lock) { unsigned long tmp; @@ -51,7 +51,7 @@ static inline void __raw_spin_lock(raw_spinlock_t *lock) /* Returns 1 if the lock is obtained, 0 otherwise. */ -static inline int __raw_spin_trylock(raw_spinlock_t *lock) +static inline int arch_spin_trylock(arch_spinlock_t *lock) { unsigned long tmp; @@ -67,7 +67,7 @@ static inline int __raw_spin_trylock(raw_spinlock_t *lock) return tmp == 0 ? 1 : 0; } -static inline void __raw_spin_unlock(raw_spinlock_t *lock) +static inline void arch_spin_unlock(arch_spinlock_t *lock) { unsigned long tmp; @@ -96,9 +96,9 @@ static inline void __raw_spin_unlock(raw_spinlock_t *lock) * 0x80000000 one writer owns the rwlock, no other writers, no readers */ -#define __raw_write_can_lock(x) ((x)->lock == 0) +#define arch_write_can_lock(x) ((x)->lock == 0) -static inline void __raw_write_lock(raw_rwlock_t *rw) +static inline void arch_write_lock(arch_rwlock_t *rw) { unsigned long tmp; @@ -116,7 +116,7 @@ static inline void __raw_write_lock(raw_rwlock_t *rw) /* Returns 1 if the lock is obtained, 0 otherwise. */ -static inline int __raw_write_trylock(raw_rwlock_t *rw) +static inline int arch_write_trylock(arch_rwlock_t *rw) { unsigned long tmp; @@ -133,7 +133,7 @@ static inline int __raw_write_trylock(raw_rwlock_t *rw) return tmp == 0 ? 1 : 0; } -static inline void __raw_write_unlock(raw_rwlock_t *rw) +static inline void arch_write_unlock(arch_rwlock_t *rw) { unsigned long tmp; @@ -145,7 +145,7 @@ static inline void __raw_write_unlock(raw_rwlock_t *rw) : "memory"); } -static inline void __raw_read_lock(raw_rwlock_t *rw) +static inline void arch_read_lock(arch_rwlock_t *rw) { unsigned long tmp; unsigned long result; @@ -164,7 +164,7 @@ static inline void __raw_read_lock(raw_rwlock_t *rw) /* Returns 1 if the lock is obtained, 0 otherwise. */ -static inline int __raw_read_trylock(raw_rwlock_t *rw) +static inline int arch_read_trylock(arch_rwlock_t *rw) { unsigned long result; unsigned long tmp; @@ -184,7 +184,7 @@ static inline int __raw_read_trylock(raw_rwlock_t *rw) return result == 0; } -static inline void __raw_read_unlock(raw_rwlock_t *rw) +static inline void arch_read_unlock(arch_rwlock_t *rw) { unsigned long tmp1, tmp2; @@ -199,4 +199,7 @@ static inline void __raw_read_unlock(raw_rwlock_t *rw) : "memory"); } +#define arch_read_lock_flags(lock, flags) arch_read_lock(lock) +#define arch_write_lock_flags(lock, flags) arch_write_lock(lock) + #endif /* _XTENSA_SPINLOCK_H */ diff --git a/arch/xtensa/include/asm/spinlock_types.h b/arch/xtensa/include/asm/spinlock_types.h new file mode 100644 index 0000000..7ec5ce1 --- /dev/null +++ b/arch/xtensa/include/asm/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef __ASM_SPINLOCK_TYPES_H +#define __ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int slock; +} arch_spinlock_t; + +#define __ARCH_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile unsigned int lock; +} arch_rwlock_t; + +#define __ARCH_RW_LOCK_UNLOCKED { 0 } + +#endif diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h index 27fa3c1..ca929e6 100644 --- a/arch/xtensa/include/asm/timex.h +++ b/arch/xtensa/include/asm/timex.h @@ -1,18 +1,14 @@ /* - * include/asm-xtensa/timex.h - * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2001 - 2008 Tensilica Inc. + * Copyright (C) 2001 - 2013 Tensilica Inc. */ #ifndef _XTENSA_TIMEX_H #define _XTENSA_TIMEX_H -#ifdef __KERNEL__ - #include <asm/processor.h> #include <linux/stringify.h> @@ -39,14 +35,9 @@ extern unsigned long ccount_freq; typedef unsigned long long cycles_t; -/* - * Only used for SMP. - */ - -extern cycles_t cacheflush_time; - #define get_cycles() (0) +void local_timer_setup(unsigned cpu); /* * Register access. @@ -81,5 +72,4 @@ static inline void set_linux_timer (unsigned long ccompare) WSR_CCOMPARE(LINUX_TIMER, ccompare); } -#endif /* __KERNEL__ */ #endif /* _XTENSA_TIMEX_H */ diff --git a/arch/xtensa/include/asm/tlbflush.h b/arch/xtensa/include/asm/tlbflush.h index 43dd348..fc34274 100644 --- a/arch/xtensa/include/asm/tlbflush.h +++ b/arch/xtensa/include/asm/tlbflush.h @@ -1,18 +1,14 @@ /* - * include/asm-xtensa/tlbflush.h - * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2001 - 2005 Tensilica Inc. + * Copyright (C) 2001 - 2013 Tensilica Inc. */ #ifndef _XTENSA_TLBFLUSH_H #define _XTENSA_TLBFLUSH_H -#ifdef __KERNEL__ - #include <linux/stringify.h> #include <asm/processor.h> @@ -34,12 +30,37 @@ * - flush_tlb_range(mm, start, end) flushes a range of pages */ -extern void flush_tlb_all(void); -extern void flush_tlb_mm(struct mm_struct*); -extern void flush_tlb_page(struct vm_area_struct*,unsigned long); -extern void flush_tlb_range(struct vm_area_struct*,unsigned long,unsigned long); +void local_flush_tlb_all(void); +void local_flush_tlb_mm(struct mm_struct *mm); +void local_flush_tlb_page(struct vm_area_struct *vma, + unsigned long page); +void local_flush_tlb_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end); + +#ifdef CONFIG_SMP + +void flush_tlb_all(void); +void flush_tlb_mm(struct mm_struct *); +void flush_tlb_page(struct vm_area_struct *, unsigned long); +void flush_tlb_range(struct vm_area_struct *, unsigned long, + unsigned long); + +static inline void flush_tlb_kernel_range(unsigned long start, + unsigned long end) +{ + flush_tlb_all(); +} + +#else /* !CONFIG_SMP */ + +#define flush_tlb_all() local_flush_tlb_all() +#define flush_tlb_mm(mm) local_flush_tlb_mm(mm) +#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page) +#define flush_tlb_range(vma, vmaddr, end) local_flush_tlb_range(vma, vmaddr, \ + end) +#define flush_tlb_kernel_range(start, end) local_flush_tlb_all() -#define flush_tlb_kernel_range(start,end) flush_tlb_all() +#endif /* CONFIG_SMP */ /* TLB operations. */ @@ -187,5 +208,4 @@ static inline unsigned long read_itlb_translation (int way) } #endif /* __ASSEMBLY__ */ -#endif /* __KERNEL__ */ #endif /* _XTENSA_TLBFLUSH_H */ diff --git a/arch/xtensa/include/asm/traps.h b/arch/xtensa/include/asm/traps.h index 917488a..8c194f6 100644 --- a/arch/xtensa/include/asm/traps.h +++ b/arch/xtensa/include/asm/traps.h @@ -19,6 +19,7 @@ */ extern void * __init trap_set_handler(int cause, void *handler); extern void do_unhandled(struct pt_regs *regs, unsigned long exccause); +void secondary_trap_init(void); static inline void spill_registers(void) { diff --git a/arch/xtensa/include/asm/vectors.h b/arch/xtensa/include/asm/vectors.h index c52b656..5791b45 100644 --- a/arch/xtensa/include/asm/vectors.h +++ b/arch/xtensa/include/asm/vectors.h @@ -20,6 +20,17 @@ #include <variant/core.h> +#define XCHAL_KIO_CACHED_VADDR 0xe0000000 +#define XCHAL_KIO_BYPASS_VADDR 0xf0000000 +#define XCHAL_KIO_DEFAULT_PADDR 0xf0000000 +#define XCHAL_KIO_SIZE 0x10000000 + +#if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY && CONFIG_OF +#define XCHAL_KIO_PADDR xtensa_get_kio_paddr() +#else +#define XCHAL_KIO_PADDR XCHAL_KIO_DEFAULT_PADDR +#endif + #if defined(CONFIG_MMU) /* Will Become VECBASE */ @@ -30,11 +41,9 @@ #if defined(XCHAL_HAVE_PTP_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY /* MMU v3 - XCHAL_HAVE_PTP_MMU == 1 */ - #define PHYSICAL_MEMORY_ADDRESS 0x00000000 #define LOAD_MEMORY_ADDRESS 0x00003000 #else /* MMU V2 - XCHAL_HAVE_PTP_MMU == 0 */ - #define PHYSICAL_MEMORY_ADDRESS 0xD0000000 #define LOAD_MEMORY_ADDRESS 0xD0003000 #endif @@ -46,7 +55,6 @@ /* Location of the start of the kernel text, _start */ #define KERNELOFFSET 0x00003000 - #define PHYSICAL_MEMORY_ADDRESS 0x00000000 /* Loaded just above possibly live vectors */ #define LOAD_MEMORY_ADDRESS 0x00003000 @@ -54,7 +62,6 @@ #endif /* CONFIG_MMU */ #define XC_VADDR(offset) (VIRTUAL_MEMORY_ADDRESS + offset) -#define XC_PADDR(offset) (PHYSICAL_MEMORY_ADDRESS + offset) /* Used to set VECBASE register */ #define VECBASE_RESET_VADDR VIRTUAL_MEMORY_ADDRESS @@ -67,7 +74,7 @@ VECBASE_RESET_VADDR) #define RESET_VECTOR1_VADDR XC_VADDR(RESET_VECTOR1_VECOFS) -#if XCHAL_HAVE_VECBASE +#if defined(XCHAL_HAVE_VECBASE) && XCHAL_HAVE_VECBASE #define USER_VECTOR_VADDR XC_VADDR(XCHAL_USER_VECOFS) #define KERNEL_VECTOR_VADDR XC_VADDR(XCHAL_KERNEL_VECOFS) @@ -81,11 +88,9 @@ #define DEBUG_VECTOR_VADDR XC_VADDR(XCHAL_DEBUG_VECOFS) -#undef XCHAL_NMI_VECTOR_VADDR -#define XCHAL_NMI_VECTOR_VADDR XC_VADDR(XCHAL_NMI_VECOFS) +#define NMI_VECTOR_VADDR XC_VADDR(XCHAL_NMI_VECOFS) -#undef XCHAL_INTLEVEL7_VECTOR_VADDR -#define XCHAL_INTLEVEL7_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL7_VECOFS) +#define INTLEVEL7_VECTOR_VADDR XC_VADDR(XCHAL_INTLEVEL7_VECOFS) /* * These XCHAL_* #defines from varian/core.h diff --git a/arch/xtensa/include/uapi/asm/socket.h b/arch/xtensa/include/uapi/asm/socket.h index 7db5c22..39acec0c 100644 --- a/arch/xtensa/include/uapi/asm/socket.h +++ b/arch/xtensa/include/uapi/asm/socket.h @@ -89,4 +89,6 @@ #define SO_MAX_PACING_RATE 47 +#define SO_BPF_EXTENSIONS 48 + #endif /* _XTENSA_SOCKET_H */ |
