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-rw-r--r--arch/csky/abiv2/cacheflush.c3
-rw-r--r--arch/csky/abiv2/inc/abi/ckmmu.h44
-rw-r--r--arch/csky/abiv2/inc/abi/entry.h20
-rw-r--r--arch/csky/abiv2/inc/abi/fpu.h1
-rw-r--r--arch/csky/abiv2/inc/abi/page.h1
-rw-r--r--arch/csky/abiv2/inc/abi/pgtable-bits.h37
-rw-r--r--arch/csky/abiv2/inc/abi/reg_ops.h1
-rw-r--r--arch/csky/abiv2/inc/abi/regdef.h6
-rw-r--r--arch/csky/abiv2/inc/abi/switch_context.h1
-rw-r--r--arch/csky/abiv2/inc/abi/vdso.h20
-rw-r--r--arch/csky/abiv2/sysdep.h1
11 files changed, 85 insertions, 50 deletions
diff --git a/arch/csky/abiv2/cacheflush.c b/arch/csky/abiv2/cacheflush.c
index 790f1ebfba44..39c51399dd81 100644
--- a/arch/csky/abiv2/cacheflush.c
+++ b/arch/csky/abiv2/cacheflush.c
@@ -12,6 +12,9 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
unsigned long addr;
struct page *page;
+ if (!pfn_valid(pte_pfn(*pte)))
+ return;
+
page = pfn_to_page(pte_pfn(*pte));
if (page == ZERO_PAGE(0))
return;
diff --git a/arch/csky/abiv2/inc/abi/ckmmu.h b/arch/csky/abiv2/inc/abi/ckmmu.h
index 73ded7c72482..64215f2380f1 100644
--- a/arch/csky/abiv2/inc/abi/ckmmu.h
+++ b/arch/csky/abiv2/inc/abi/ckmmu.h
@@ -1,5 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_CKMMUV2_H
#define __ASM_CSKY_CKMMUV2_H
@@ -78,8 +77,13 @@ 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 +92,13 @@ 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
@@ -100,16 +109,31 @@ static inline void tlb_invalid_indexed(void)
mtcr("cr<8, 15>", 0x02000000);
}
-static inline void setup_pgd(unsigned long pgd, bool kernel)
+#define NOP32 ".long 0x4820c400\n"
+
+static inline void setup_pgd(pgd_t *pgd, int asid)
{
- if (kernel)
- mtcr("cr<28, 15>", pgd | BIT(0));
- else
- mtcr("cr<29, 15>", pgd | BIT(0));
+#ifdef CONFIG_CPU_HAS_TLBI
+ sync_is();
+#else
+ mb();
+#endif
+ asm volatile(
+#ifdef CONFIG_CPU_HAS_TLBI
+ "mtcr %1, cr<28, 15> \n"
+#endif
+ "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 unsigned long get_pgd(void)
+static inline pgd_t *get_pgd(void)
{
- return mfcr("cr<29, 15>") & ~BIT(0);
+ return __va(mfcr("cr<29, 15>") & ~BIT(0));
}
#endif /* __ASM_CSKY_CKMMUV2_H */
diff --git a/arch/csky/abiv2/inc/abi/entry.h b/arch/csky/abiv2/inc/abi/entry.h
index bedcc6f06bba..cca63e699b58 100644
--- a/arch/csky/abiv2/inc/abi/entry.h
+++ b/arch/csky/abiv2/inc/abi/entry.h
@@ -1,5 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_ENTRY_H
#define __ASM_CSKY_ENTRY_H
@@ -26,6 +25,9 @@
stw tls, (sp, 0)
stw lr, (sp, 4)
+ RD_MEH lr
+ WR_MEH lr
+
mfcr lr, epc
movi tls, \epc_inc
add lr, tls
@@ -231,6 +233,16 @@
mtcr \rx, cr<8, 15>
.endm
+#ifdef CONFIG_PAGE_OFFSET_80000000
+#define MSA_SET cr<30, 15>
+#define MSA_CLR cr<31, 15>
+#endif
+
+#ifdef CONFIG_PAGE_OFFSET_A0000000
+#define MSA_SET cr<31, 15>
+#define MSA_CLR cr<30, 15>
+#endif
+
.macro SETUP_MMU
/* Init psr and enable ee */
lrw r6, DEFAULT_PSR_VALUE
@@ -281,15 +293,15 @@
* 31 - 29 | 28 - 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
* BA Reserved SH WA B SO SEC C D V
*/
- mfcr r6, cr<30, 15> /* Get MSA0 */
+ mfcr r6, MSA_SET /* Get MSA */
2:
lsri r6, 29
lsli r6, 29
addi r6, 0x1ce
- mtcr r6, cr<30, 15> /* Set MSA0 */
+ mtcr r6, MSA_SET /* Set MSA */
movi r6, 0
- mtcr r6, cr<31, 15> /* Clr MSA1 */
+ mtcr r6, MSA_CLR /* Clr MSA */
/* enable MMU */
mfcr r6, cr18
diff --git a/arch/csky/abiv2/inc/abi/fpu.h b/arch/csky/abiv2/inc/abi/fpu.h
index 09e2700a3693..aabb79355013 100644
--- a/arch/csky/abiv2/inc/abi/fpu.h
+++ b/arch/csky/abiv2/inc/abi/fpu.h
@@ -1,5 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_FPU_H
#define __ASM_CSKY_FPU_H
diff --git a/arch/csky/abiv2/inc/abi/page.h b/arch/csky/abiv2/inc/abi/page.h
index 0a70cb553dca..cf005f13cd15 100644
--- a/arch/csky/abiv2/inc/abi/page.h
+++ b/arch/csky/abiv2/inc/abi/page.h
@@ -1,5 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
static inline void clear_user_page(void *addr, unsigned long vaddr,
struct page *page)
diff --git a/arch/csky/abiv2/inc/abi/pgtable-bits.h b/arch/csky/abiv2/inc/abi/pgtable-bits.h
index 137f7932c83b..7e7f389f546f 100644
--- a/arch/csky/abiv2/inc/abi/pgtable-bits.h
+++ b/arch/csky/abiv2/inc/abi/pgtable-bits.h
@@ -1,37 +1,48 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_PGTABLE_BITS_H
#define __ASM_CSKY_PGTABLE_BITS_H
/* implemented in software */
#define _PAGE_ACCESSED (1<<7)
-#define PAGE_ACCESSED_BIT (7)
-
#define _PAGE_READ (1<<8)
#define _PAGE_WRITE (1<<9)
#define _PAGE_PRESENT (1<<10)
-
#define _PAGE_MODIFIED (1<<11)
-#define PAGE_MODIFIED_BIT (11)
/* implemented in hardware */
#define _PAGE_GLOBAL (1<<0)
-
#define _PAGE_VALID (1<<1)
-#define PAGE_VALID_BIT (1)
-
#define _PAGE_DIRTY (1<<2)
-#define PAGE_DIRTY_BIT (2)
#define _PAGE_SO (1<<5)
#define _PAGE_BUF (1<<6)
-
#define _PAGE_CACHE (1<<3)
-
#define _CACHE_MASK _PAGE_CACHE
-#define _CACHE_CACHED (_PAGE_VALID | _PAGE_CACHE | _PAGE_BUF)
-#define _CACHE_UNCACHED (_PAGE_VALID)
+#define _CACHE_CACHED (_PAGE_CACHE | _PAGE_BUF)
+#define _CACHE_UNCACHED (0)
+
+#define _PAGE_PROT_NONE _PAGE_WRITE
+
+/*
+ * Encode and decode a swap entry
+ *
+ * Format of swap PTE:
+ * bit 0: _PAGE_GLOBAL (zero)
+ * bit 1: _PAGE_VALID (zero)
+ * bit 2 - 6: swap type
+ * bit 7 - 8: swap offset[0 - 1]
+ * bit 9: _PAGE_WRITE (zero)
+ * bit 10: _PAGE_PRESENT (zero)
+ * bit 11 - 31: swap offset[2 - 22]
+ */
+#define __swp_type(x) (((x).val >> 2) & 0x1f)
+#define __swp_offset(x) ((((x).val >> 7) & 0x3) | \
+ (((x).val >> 9) & 0x7ffffc))
+#define __swp_entry(type, offset) ((swp_entry_t) { \
+ ((type & 0x1f) << 2) | \
+ ((offset & 0x3) << 7) | \
+ ((offset & 0x7ffffc) << 9)})
#endif /* __ASM_CSKY_PGTABLE_BITS_H */
diff --git a/arch/csky/abiv2/inc/abi/reg_ops.h b/arch/csky/abiv2/inc/abi/reg_ops.h
index ae82c3f26a6b..49ba18a64751 100644
--- a/arch/csky/abiv2/inc/abi/reg_ops.h
+++ b/arch/csky/abiv2/inc/abi/reg_ops.h
@@ -1,5 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ABI_REG_OPS_H
#define __ABI_REG_OPS_H
diff --git a/arch/csky/abiv2/inc/abi/regdef.h b/arch/csky/abiv2/inc/abi/regdef.h
index d7328bbc1ce7..0933addbc27b 100644
--- a/arch/csky/abiv2/inc/abi/regdef.h
+++ b/arch/csky/abiv2/inc/abi/regdef.h
@@ -1,10 +1,14 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_REGDEF_H
#define __ASM_CSKY_REGDEF_H
+#ifdef __ASSEMBLY__
#define syscallid r7
+#else
+#define syscallid "r7"
+#endif
+
#define regs_syscallid(regs) regs->regs[3]
#define regs_fp(regs) regs->regs[4]
diff --git a/arch/csky/abiv2/inc/abi/switch_context.h b/arch/csky/abiv2/inc/abi/switch_context.h
index 73a81245a3b3..5dd5c3f4ee7e 100644
--- a/arch/csky/abiv2/inc/abi/switch_context.h
+++ b/arch/csky/abiv2/inc/abi/switch_context.h
@@ -1,5 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ABI_CSKY_PTRACE_H
#define __ABI_CSKY_PTRACE_H
diff --git a/arch/csky/abiv2/inc/abi/vdso.h b/arch/csky/abiv2/inc/abi/vdso.h
index b60d4a070326..40fd10d893ff 100644
--- a/arch/csky/abiv2/inc/abi/vdso.h
+++ b/arch/csky/abiv2/inc/abi/vdso.h
@@ -3,21 +3,7 @@
#ifndef __ABI_CSKY_VDSO_H
#define __ABI_CSKY_VDSO_H
-#include <linux/uaccess.h>
+/* movi r7, 173 */
+#define SET_SYSCALL_ID .long 0x008bea07
-static inline int setup_vdso_page(unsigned short *ptr)
-{
- int err = 0;
-
- /* movi r7, 173 */
- err |= __put_user(0xea07, ptr);
- err |= __put_user(0x008b, ptr+1);
-
- /* trap 0 */
- err |= __put_user(0xc000, ptr+2);
- err |= __put_user(0x2020, ptr+3);
-
- return err;
-}
-
-#endif /* __ABI_CSKY_STRING_H */
+#endif /* __ABI_CSKY_VDSO_H */
diff --git a/arch/csky/abiv2/sysdep.h b/arch/csky/abiv2/sysdep.h
index bbbedfd34777..61abe9201c50 100644
--- a/arch/csky/abiv2/sysdep.h
+++ b/arch/csky/abiv2/sysdep.h
@@ -1,5 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __SYSDEP_H
#define __SYSDEP_H
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