summaryrefslogtreecommitdiff
path: root/arch/csky
diff options
context:
space:
mode:
Diffstat (limited to 'arch/csky')
-rw-r--r--arch/csky/abiv1/inc/abi/ckmmu.h3
-rw-r--r--arch/csky/abiv2/inc/abi/ckmmu.h35
-rw-r--r--arch/csky/include/asm/mmu_context.h3
-rw-r--r--arch/csky/mm/init.c2
-rw-r--r--arch/csky/mm/tlb.c42
5 files changed, 69 insertions, 16 deletions
diff --git a/arch/csky/abiv1/inc/abi/ckmmu.h b/arch/csky/abiv1/inc/abi/ckmmu.h
index cceb3afb4c91..b4650de43078 100644
--- a/arch/csky/abiv1/inc/abi/ckmmu.h
+++ b/arch/csky/abiv1/inc/abi/ckmmu.h
@@ -89,9 +89,10 @@ static inline void tlb_invalid_indexed(void)
cpwcr("cpcr8", 0x02000000);
}
-static inline void setup_pgd(pgd_t *pgd)
+static inline void setup_pgd(pgd_t *pgd, int asid)
{
cpwcr("cpcr29", __pa(pgd) | BIT(0));
+ write_mmu_entryhi(asid);
}
static inline pgd_t *get_pgd(void)
diff --git a/arch/csky/abiv2/inc/abi/ckmmu.h b/arch/csky/abiv2/inc/abi/ckmmu.h
index c39b13810550..530d2c7edc85 100644
--- a/arch/csky/abiv2/inc/abi/ckmmu.h
+++ b/arch/csky/abiv2/inc/abi/ckmmu.h
@@ -78,8 +78,13 @@ static inline void tlb_read(void)
static inline void tlb_invalid_all(void)
{
#ifdef CONFIG_CPU_HAS_TLBI
- asm volatile("tlbi.alls\n":::"memory");
sync_is();
+ asm volatile(
+ "tlbi.alls \n"
+ "sync.i \n"
+ :
+ :
+ : "memory");
#else
mtcr("cr<8, 15>", 0x04000000);
#endif
@@ -88,8 +93,13 @@ static inline void tlb_invalid_all(void)
static inline void local_tlb_invalid_all(void)
{
#ifdef CONFIG_CPU_HAS_TLBI
- asm volatile("tlbi.all\n":::"memory");
sync_is();
+ asm volatile(
+ "tlbi.all \n"
+ "sync.i \n"
+ :
+ :
+ : "memory");
#else
tlb_invalid_all();
#endif
@@ -100,12 +110,27 @@ static inline void tlb_invalid_indexed(void)
mtcr("cr<8, 15>", 0x02000000);
}
-static inline void setup_pgd(pgd_t *pgd)
+#define NOP32 ".long 0x4820c400\n"
+
+static inline void setup_pgd(pgd_t *pgd, int asid)
{
#ifdef CONFIG_CPU_HAS_TLBI
- mtcr("cr<28, 15>", __pa(pgd) | BIT(0));
+ sync_is();
+#else
+ mb();
+#endif
+ asm volatile(
+#ifdef CONFIG_CPU_HAS_TLBI
+ "mtcr %1, cr<28, 15> \n"
#endif
- mtcr("cr<29, 15>", __pa(pgd) | BIT(0));
+ "mtcr %1, cr<29, 15> \n"
+ "mtcr %0, cr< 4, 15> \n"
+ ".rept 64 \n"
+ NOP32
+ ".endr \n"
+ :
+ :"r"(asid), "r"(__pa(pgd) | BIT(0))
+ :"memory");
}
static inline pgd_t *get_pgd(void)
diff --git a/arch/csky/include/asm/mmu_context.h b/arch/csky/include/asm/mmu_context.h
index 3767dbffd02f..594167bbdc63 100644
--- a/arch/csky/include/asm/mmu_context.h
+++ b/arch/csky/include/asm/mmu_context.h
@@ -30,8 +30,7 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
if (prev != next)
check_and_switch_context(next, cpu);
- setup_pgd(next->pgd);
- write_mmu_entryhi(next->context.asid.counter);
+ setup_pgd(next->pgd, next->context.asid.counter);
flush_icache_deferred(next);
}
diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c
index 8170d7ce116b..bc05a3be9d57 100644
--- a/arch/csky/mm/init.c
+++ b/arch/csky/mm/init.c
@@ -164,7 +164,7 @@ void __init mmu_init(unsigned long min_pfn, unsigned long max_pfn)
/* Setup page mask to 4k */
write_mmu_pagemask(0);
- setup_pgd(swapper_pg_dir);
+ setup_pgd(swapper_pg_dir, 0);
}
void __init fixrange_init(unsigned long start, unsigned long end,
diff --git a/arch/csky/mm/tlb.c b/arch/csky/mm/tlb.c
index ed1512381112..9234c5e5ceaf 100644
--- a/arch/csky/mm/tlb.c
+++ b/arch/csky/mm/tlb.c
@@ -24,7 +24,13 @@ void flush_tlb_all(void)
void flush_tlb_mm(struct mm_struct *mm)
{
#ifdef CONFIG_CPU_HAS_TLBI
- asm volatile("tlbi.asids %0"::"r"(cpu_asid(mm)));
+ sync_is();
+ asm volatile(
+ "tlbi.asids %0 \n"
+ "sync.i \n"
+ :
+ : "r" (cpu_asid(mm))
+ : "memory");
#else
tlb_invalid_all();
#endif
@@ -53,11 +59,17 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
end &= TLB_ENTRY_SIZE_MASK;
#ifdef CONFIG_CPU_HAS_TLBI
+ sync_is();
while (start < end) {
- asm volatile("tlbi.vas %0"::"r"(start | newpid));
+ asm volatile(
+ "tlbi.vas %0 \n"
+ :
+ : "r" (start | newpid)
+ : "memory");
+
start += 2*PAGE_SIZE;
}
- sync_is();
+ asm volatile("sync.i\n");
#else
{
unsigned long flags, oldpid;
@@ -87,11 +99,17 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end)
end &= TLB_ENTRY_SIZE_MASK;
#ifdef CONFIG_CPU_HAS_TLBI
+ sync_is();
while (start < end) {
- asm volatile("tlbi.vaas %0"::"r"(start));
+ asm volatile(
+ "tlbi.vaas %0 \n"
+ :
+ : "r" (start)
+ : "memory");
+
start += 2*PAGE_SIZE;
}
- sync_is();
+ asm volatile("sync.i\n");
#else
{
unsigned long flags, oldpid;
@@ -121,8 +139,13 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
addr &= TLB_ENTRY_SIZE_MASK;
#ifdef CONFIG_CPU_HAS_TLBI
- asm volatile("tlbi.vas %0"::"r"(addr | newpid));
sync_is();
+ asm volatile(
+ "tlbi.vas %0 \n"
+ "sync.i \n"
+ :
+ : "r" (addr | newpid)
+ : "memory");
#else
{
int oldpid, idx;
@@ -147,8 +170,13 @@ void flush_tlb_one(unsigned long addr)
addr &= TLB_ENTRY_SIZE_MASK;
#ifdef CONFIG_CPU_HAS_TLBI
- asm volatile("tlbi.vaas %0"::"r"(addr));
sync_is();
+ asm volatile(
+ "tlbi.vaas %0 \n"
+ "sync.i \n"
+ :
+ : "r" (addr)
+ : "memory");
#else
{
int oldpid, idx;