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-rw-r--r--arch/arm/include/asm/assembler.h12
-rw-r--r--arch/arm/include/asm/cacheflush.h4
-rw-r--r--arch/arm/include/asm/elf.h2
-rw-r--r--arch/arm/include/asm/futex.h16
-rw-r--r--arch/arm/include/asm/highmem.h15
-rw-r--r--arch/arm/include/asm/kmap_types.h1
-rw-r--r--arch/arm/include/asm/smp_twd.h17
-rw-r--r--arch/arm/include/asm/tlbflush.h29
-rw-r--r--arch/arm/include/asm/uaccess.h40
-rw-r--r--arch/arm/include/asm/ucontext.h23
-rw-r--r--arch/arm/include/asm/user.h12
11 files changed, 122 insertions, 49 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 00f46d9ce299..6e8f05c8a1c8 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -149,10 +149,10 @@
#define USER(x...) \
9999: x; \
- .section __ex_table,"a"; \
+ .pushsection __ex_table,"a"; \
.align 3; \
.long 9999b,9001f; \
- .previous
+ .popsection
/*
* SMP data memory barrier
@@ -193,10 +193,10 @@
.error "Unsupported inc macro argument"
.endif
- .section __ex_table,"a"
+ .pushsection __ex_table,"a"
.align 3
.long 9999b, \abort
- .previous
+ .popsection
.endm
.macro usracc, instr, reg, ptr, inc, cond, rept, abort
@@ -234,10 +234,10 @@
.error "Unsupported inc macro argument"
.endif
- .section __ex_table,"a"
+ .pushsection __ex_table,"a"
.align 3
.long 9999b, \abort
- .previous
+ .popsection
.endr
.endm
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 0d08d4170b64..4656a24058d2 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -371,6 +371,10 @@ static inline void __flush_icache_all(void)
#ifdef CONFIG_ARM_ERRATA_411920
extern void v6_icache_inval_all(void);
v6_icache_inval_all();
+#elif defined(CONFIG_SMP) && __LINUX_ARM_ARCH__ >= 7
+ asm("mcr p15, 0, %0, c7, c1, 0 @ invalidate I-cache inner shareable\n"
+ :
+ : "r" (0));
#else
asm("mcr p15, 0, %0, c7, c5, 0 @ invalidate I-cache\n"
:
diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
index bff056489cc1..51662feb9f1d 100644
--- a/arch/arm/include/asm/elf.h
+++ b/arch/arm/include/asm/elf.h
@@ -9,6 +9,8 @@
#include <asm/ptrace.h>
#include <asm/user.h>
+struct task_struct;
+
typedef unsigned long elf_greg_t;
typedef unsigned long elf_freg_t[3];
diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h
index bfcc15929a7f..540a044153a5 100644
--- a/arch/arm/include/asm/futex.h
+++ b/arch/arm/include/asm/futex.h
@@ -21,14 +21,14 @@
"2: strt %0, [%2]\n" \
" mov %0, #0\n" \
"3:\n" \
- " .section __ex_table,\"a\"\n" \
+ " .pushsection __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 4f, 2b, 4f\n" \
- " .previous\n" \
- " .section .fixup,\"ax\"\n" \
+ " .popsection\n" \
+ " .pushsection .fixup,\"ax\"\n" \
"4: mov %0, %4\n" \
" b 3b\n" \
- " .previous" \
+ " .popsection" \
: "=&r" (ret), "=&r" (oldval) \
: "r" (uaddr), "r" (oparg), "Ir" (-EFAULT) \
: "cc", "memory")
@@ -102,14 +102,14 @@ futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
" it eq @ explicit IT needed for the 2b label\n"
"2: streqt %2, [%3]\n"
"3:\n"
- " .section __ex_table,\"a\"\n"
+ " .pushsection __ex_table,\"a\"\n"
" .align 3\n"
" .long 1b, 4f, 2b, 4f\n"
- " .previous\n"
- " .section .fixup,\"ax\"\n"
+ " .popsection\n"
+ " .pushsection .fixup,\"ax\"\n"
"4: mov %0, %4\n"
" b 3b\n"
- " .previous"
+ " .popsection"
: "=&r" (val)
: "r" (oldval), "r" (newval), "r" (uaddr), "Ir" (-EFAULT)
: "cc", "memory");
diff --git a/arch/arm/include/asm/highmem.h b/arch/arm/include/asm/highmem.h
index 7f36d00600b4..feb988a7ec37 100644
--- a/arch/arm/include/asm/highmem.h
+++ b/arch/arm/include/asm/highmem.h
@@ -11,7 +11,11 @@
#define kmap_prot PAGE_KERNEL
-#define flush_cache_kmaps() flush_cache_all()
+#define flush_cache_kmaps() \
+ do { \
+ if (cache_is_vivt()) \
+ flush_cache_all(); \
+ } while (0)
extern pte_t *pkmap_page_table;
@@ -21,11 +25,20 @@ extern void *kmap_high(struct page *page);
extern void *kmap_high_get(struct page *page);
extern void kunmap_high(struct page *page);
+extern void *kmap_high_l1_vipt(struct page *page, pte_t *saved_pte);
+extern void kunmap_high_l1_vipt(struct page *page, pte_t saved_pte);
+
+/*
+ * The following functions are already defined by <linux/highmem.h>
+ * when CONFIG_HIGHMEM is not set.
+ */
+#ifdef CONFIG_HIGHMEM
extern void *kmap(struct page *page);
extern void kunmap(struct page *page);
extern void *kmap_atomic(struct page *page, enum km_type type);
extern void kunmap_atomic(void *kvaddr, enum km_type type);
extern void *kmap_atomic_pfn(unsigned long pfn, enum km_type type);
extern struct page *kmap_atomic_to_page(const void *ptr);
+#endif
#endif
diff --git a/arch/arm/include/asm/kmap_types.h b/arch/arm/include/asm/kmap_types.h
index c019949a5189..c4b2ea3fbe42 100644
--- a/arch/arm/include/asm/kmap_types.h
+++ b/arch/arm/include/asm/kmap_types.h
@@ -18,6 +18,7 @@ enum km_type {
KM_IRQ1,
KM_SOFTIRQ0,
KM_SOFTIRQ1,
+ KM_L1_CACHE,
KM_L2_CACHE,
KM_TYPE_NR
};
diff --git a/arch/arm/include/asm/smp_twd.h b/arch/arm/include/asm/smp_twd.h
index 7be0978b2625..634f357be6bb 100644
--- a/arch/arm/include/asm/smp_twd.h
+++ b/arch/arm/include/asm/smp_twd.h
@@ -1,6 +1,23 @@
#ifndef __ASMARM_SMP_TWD_H
#define __ASMARM_SMP_TWD_H
+#define TWD_TIMER_LOAD 0x00
+#define TWD_TIMER_COUNTER 0x04
+#define TWD_TIMER_CONTROL 0x08
+#define TWD_TIMER_INTSTAT 0x0C
+
+#define TWD_WDOG_LOAD 0x20
+#define TWD_WDOG_COUNTER 0x24
+#define TWD_WDOG_CONTROL 0x28
+#define TWD_WDOG_INTSTAT 0x2C
+#define TWD_WDOG_RESETSTAT 0x30
+#define TWD_WDOG_DISABLE 0x34
+
+#define TWD_TIMER_CONTROL_ENABLE (1 << 0)
+#define TWD_TIMER_CONTROL_ONESHOT (0 << 1)
+#define TWD_TIMER_CONTROL_PERIODIC (1 << 1)
+#define TWD_TIMER_CONTROL_IT_ENABLE (1 << 2)
+
struct clock_event_device;
extern void __iomem *twd_base;
diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h
index e085e2c545eb..bd863d8608cd 100644
--- a/arch/arm/include/asm/tlbflush.h
+++ b/arch/arm/include/asm/tlbflush.h
@@ -46,6 +46,9 @@
#define TLB_V7_UIS_FULL (1 << 20)
#define TLB_V7_UIS_ASID (1 << 21)
+/* Inner Shareable BTB operation (ARMv7 MP extensions) */
+#define TLB_V7_IS_BTB (1 << 22)
+
#define TLB_L2CLEAN_FR (1 << 29) /* Feroceon */
#define TLB_DCLEAN (1 << 30)
#define TLB_WB (1 << 31)
@@ -183,7 +186,7 @@
#endif
#ifdef CONFIG_SMP
-#define v7wbi_tlb_flags (TLB_WB | TLB_DCLEAN | TLB_BTB | \
+#define v7wbi_tlb_flags (TLB_WB | TLB_DCLEAN | TLB_V7_IS_BTB | \
TLB_V7_UIS_FULL | TLB_V7_UIS_PAGE | TLB_V7_UIS_ASID)
#else
#define v7wbi_tlb_flags (TLB_WB | TLB_DCLEAN | TLB_BTB | \
@@ -339,6 +342,12 @@ static inline void local_flush_tlb_all(void)
dsb();
isb();
}
+ if (tlb_flag(TLB_V7_IS_BTB)) {
+ /* flush the branch target cache */
+ asm("mcr p15, 0, %0, c7, c1, 6" : : "r" (zero) : "cc");
+ dsb();
+ isb();
+ }
}
static inline void local_flush_tlb_mm(struct mm_struct *mm)
@@ -376,6 +385,12 @@ static inline void local_flush_tlb_mm(struct mm_struct *mm)
asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc");
dsb();
}
+ if (tlb_flag(TLB_V7_IS_BTB)) {
+ /* flush the branch target cache */
+ asm("mcr p15, 0, %0, c7, c1, 6" : : "r" (zero) : "cc");
+ dsb();
+ isb();
+ }
}
static inline void
@@ -416,6 +431,12 @@ local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero) : "cc");
dsb();
}
+ if (tlb_flag(TLB_V7_IS_BTB)) {
+ /* flush the branch target cache */
+ asm("mcr p15, 0, %0, c7, c1, 6" : : "r" (zero) : "cc");
+ dsb();
+ isb();
+ }
}
static inline void local_flush_tlb_kernel_page(unsigned long kaddr)
@@ -454,6 +475,12 @@ static inline void local_flush_tlb_kernel_page(unsigned long kaddr)
dsb();
isb();
}
+ if (tlb_flag(TLB_V7_IS_BTB)) {
+ /* flush the branch target cache */
+ asm("mcr p15, 0, %0, c7, c1, 6" : : "r" (zero) : "cc");
+ dsb();
+ isb();
+ }
}
/*
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index 1d6bd40a4322..33e4a48fe103 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -229,16 +229,16 @@ do { \
__asm__ __volatile__( \
"1: ldrbt %1,[%2]\n" \
"2:\n" \
- " .section .fixup,\"ax\"\n" \
+ " .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"3: mov %0, %3\n" \
" mov %1, #0\n" \
" b 2b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
+ " .popsection\n" \
+ " .pushsection __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 3b\n" \
- " .previous" \
+ " .popsection" \
: "+r" (err), "=&r" (x) \
: "r" (addr), "i" (-EFAULT) \
: "cc")
@@ -265,16 +265,16 @@ do { \
__asm__ __volatile__( \
"1: ldrt %1,[%2]\n" \
"2:\n" \
- " .section .fixup,\"ax\"\n" \
+ " .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"3: mov %0, %3\n" \
" mov %1, #0\n" \
" b 2b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
+ " .popsection\n" \
+ " .pushsection __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 3b\n" \
- " .previous" \
+ " .popsection" \
: "+r" (err), "=&r" (x) \
: "r" (addr), "i" (-EFAULT) \
: "cc")
@@ -310,15 +310,15 @@ do { \
__asm__ __volatile__( \
"1: strbt %1,[%2]\n" \
"2:\n" \
- " .section .fixup,\"ax\"\n" \
+ " .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"3: mov %0, %3\n" \
" b 2b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
+ " .popsection\n" \
+ " .pushsection __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 3b\n" \
- " .previous" \
+ " .popsection" \
: "+r" (err) \
: "r" (x), "r" (__pu_addr), "i" (-EFAULT) \
: "cc")
@@ -343,15 +343,15 @@ do { \
__asm__ __volatile__( \
"1: strt %1,[%2]\n" \
"2:\n" \
- " .section .fixup,\"ax\"\n" \
+ " .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"3: mov %0, %3\n" \
" b 2b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
+ " .popsection\n" \
+ " .pushsection __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 3b\n" \
- " .previous" \
+ " .popsection" \
: "+r" (err) \
: "r" (x), "r" (__pu_addr), "i" (-EFAULT) \
: "cc")
@@ -371,16 +371,16 @@ do { \
THUMB( "1: strt " __reg_oper1 ", [%1]\n" ) \
THUMB( "2: strt " __reg_oper0 ", [%1, #4]\n" ) \
"3:\n" \
- " .section .fixup,\"ax\"\n" \
+ " .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"4: mov %0, %3\n" \
" b 3b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
+ " .popsection\n" \
+ " .pushsection __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 4b\n" \
" .long 2b, 4b\n" \
- " .previous" \
+ " .popsection" \
: "+r" (err), "+r" (__pu_addr) \
: "r" (x), "i" (-EFAULT) \
: "cc")
diff --git a/arch/arm/include/asm/ucontext.h b/arch/arm/include/asm/ucontext.h
index bf65e9f4525d..47f023aa8495 100644
--- a/arch/arm/include/asm/ucontext.h
+++ b/arch/arm/include/asm/ucontext.h
@@ -59,23 +59,22 @@ struct iwmmxt_sigframe {
#endif /* CONFIG_IWMMXT */
#ifdef CONFIG_VFP
-#if __LINUX_ARM_ARCH__ < 6
-/* For ARM pre-v6, we use fstmiax and fldmiax. This adds one extra
- * word after the registers, and a word of padding at the end for
- * alignment. */
#define VFP_MAGIC 0x56465001
-#define VFP_STORAGE_SIZE 152
-#else
-#define VFP_MAGIC 0x56465002
-#define VFP_STORAGE_SIZE 144
-#endif
struct vfp_sigframe
{
unsigned long magic;
unsigned long size;
- union vfp_state storage;
-};
+ struct user_vfp ufp;
+ struct user_vfp_exc ufp_exc;
+} __attribute__((__aligned__(8)));
+
+/*
+ * 8 byte for magic and size, 264 byte for ufp, 12 bytes for ufp_exc,
+ * 4 bytes padding.
+ */
+#define VFP_STORAGE_SIZE sizeof(struct vfp_sigframe)
+
#endif /* CONFIG_VFP */
/*
@@ -91,7 +90,7 @@ struct aux_sigframe {
#ifdef CONFIG_IWMMXT
struct iwmmxt_sigframe iwmmxt;
#endif
-#if 0 && defined CONFIG_VFP /* Not yet saved. */
+#ifdef CONFIG_VFP
struct vfp_sigframe vfp;
#endif
/* Something that isn't a valid magic number for any coprocessor. */
diff --git a/arch/arm/include/asm/user.h b/arch/arm/include/asm/user.h
index df95e050f9dd..05ac4b06876a 100644
--- a/arch/arm/include/asm/user.h
+++ b/arch/arm/include/asm/user.h
@@ -83,11 +83,21 @@ struct user{
/*
* User specific VFP registers. If only VFPv2 is present, registers 16 to 31
- * are ignored by the ptrace system call.
+ * are ignored by the ptrace system call and the signal handler.
*/
struct user_vfp {
unsigned long long fpregs[32];
unsigned long fpscr;
};
+/*
+ * VFP exception registers exposed to user space during signal delivery.
+ * Fields not relavant to the current VFP architecture are ignored.
+ */
+struct user_vfp_exc {
+ unsigned long fpexc;
+ unsigned long fpinst;
+ unsigned long fpinst2;
+};
+
#endif /* _ARM_USER_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 19:46:51 +0000