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authorVineet Gupta <vgupta@synopsys.com>2013-05-14 13:28:17 +0530
committerVineet Gupta <vgupta@synopsys.com>2013-06-22 13:46:42 +0530
commitda1677b02d3ef674dfd8a4ba1ed32153dc717fa2 (patch)
tree109d07ee350a94a85f9447af3f488623f989b6fa
parent18437347b976b81e616a57fb36922a240e71a6de (diff)
ARC: Disintegrate arcregs.h
* Move the various sub-system defines/types into relevant files/functions (reduces compilation time) * move CPU specific stuff out of asm/tlb.h into asm/mmu.h Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
-rw-r--r--arch/arc/include/asm/arcregs.h116
-rw-r--r--arch/arc/include/asm/cache.h19
-rw-r--r--arch/arc/include/asm/irqflags.h20
-rw-r--r--arch/arc/include/asm/mmu.h36
-rw-r--r--arch/arc/include/asm/pgtable.h6
-rw-r--r--arch/arc/include/asm/tlb-mmu1.h1
-rw-r--r--arch/arc/include/asm/tlb.h26
-rw-r--r--arch/arc/kernel/time.c11
-rw-r--r--arch/arc/mm/cache_arc700.c39
-rw-r--r--arch/arc/mm/fault.c1
-rw-r--r--arch/arc/mm/tlb.c24
-rw-r--r--arch/arc/mm/tlbex.S2
12 files changed, 139 insertions, 162 deletions
diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h
index 1b907c465666..20002c46e3bc 100644
--- a/arch/arc/include/asm/arcregs.h
+++ b/arch/arc/include/asm/arcregs.h
@@ -20,7 +20,6 @@
#define ARC_REG_PERIBASE_BCR 0x69
#define ARC_REG_FP_BCR 0x6B /* Single-Precision FPU */
#define ARC_REG_DPFP_BCR 0x6C /* Dbl Precision FPU */
-#define ARC_REG_MMU_BCR 0x6f
#define ARC_REG_DCCM_BCR 0x74 /* DCCM Present + SZ */
#define ARC_REG_TIMERS_BCR 0x75
#define ARC_REG_ICCM_BCR 0x78
@@ -34,22 +33,12 @@
#define ARC_REG_D_UNCACH_BCR 0x6A
/* status32 Bits Positions */
-#define STATUS_H_BIT 0 /* CPU Halted */
-#define STATUS_E1_BIT 1 /* Int 1 enable */
-#define STATUS_E2_BIT 2 /* Int 2 enable */
-#define STATUS_A1_BIT 3 /* Int 1 active */
-#define STATUS_A2_BIT 4 /* Int 2 active */
#define STATUS_AE_BIT 5 /* Exception active */
#define STATUS_DE_BIT 6 /* PC is in delay slot */
#define STATUS_U_BIT 7 /* User/Kernel mode */
#define STATUS_L_BIT 12 /* Loop inhibit */
/* These masks correspond to the status word(STATUS_32) bits */
-#define STATUS_H_MASK (1<<STATUS_H_BIT)
-#define STATUS_E1_MASK (1<<STATUS_E1_BIT)
-#define STATUS_E2_MASK (1<<STATUS_E2_BIT)
-#define STATUS_A1_MASK (1<<STATUS_A1_BIT)
-#define STATUS_A2_MASK (1<<STATUS_A2_BIT)
#define STATUS_AE_MASK (1<<STATUS_AE_BIT)
#define STATUS_DE_MASK (1<<STATUS_DE_BIT)
#define STATUS_U_MASK (1<<STATUS_U_BIT)
@@ -87,86 +76,7 @@
/* Auxiliary registers */
#define AUX_IDENTITY 4
#define AUX_INTR_VEC_BASE 0x25
-#define AUX_IRQ_LEV 0x200 /* IRQ Priority: L1 or L2 */
-#define AUX_IRQ_HINT 0x201 /* For generating Soft Interrupts */
-#define AUX_IRQ_LV12 0x43 /* interrupt level register */
-
-#define AUX_IENABLE 0x40c
-#define AUX_ITRIGGER 0x40d
-#define AUX_IPULSE 0x415
-
-/* Timer related Aux registers */
-#define ARC_REG_TIMER0_LIMIT 0x23 /* timer 0 limit */
-#define ARC_REG_TIMER0_CTRL 0x22 /* timer 0 control */
-#define ARC_REG_TIMER0_CNT 0x21 /* timer 0 count */
-#define ARC_REG_TIMER1_LIMIT 0x102 /* timer 1 limit */
-#define ARC_REG_TIMER1_CTRL 0x101 /* timer 1 control */
-#define ARC_REG_TIMER1_CNT 0x100 /* timer 1 count */
-
-#define TIMER_CTRL_IE (1 << 0) /* Interupt when Count reachs limit */
-#define TIMER_CTRL_NH (1 << 1) /* Count only when CPU NOT halted */
-
-/* MMU Management regs */
-#define ARC_REG_TLBPD0 0x405
-#define ARC_REG_TLBPD1 0x406
-#define ARC_REG_TLBINDEX 0x407
-#define ARC_REG_TLBCOMMAND 0x408
-#define ARC_REG_PID 0x409
-#define ARC_REG_SCRATCH_DATA0 0x418
-
-/* Bits in MMU PID register */
-#define MMU_ENABLE (1 << 31) /* Enable MMU for process */
-
-/* Error code if probe fails */
-#define TLB_LKUP_ERR 0x80000000
-
-/* TLB Commands */
-#define TLBWrite 0x1
-#define TLBRead 0x2
-#define TLBGetIndex 0x3
-#define TLBProbe 0x4
-
-#if (CONFIG_ARC_MMU_VER >= 2)
-#define TLBWriteNI 0x5 /* write JTLB without inv uTLBs */
-#define TLBIVUTLB 0x6 /* explicitly inv uTLBs */
-#else
-#undef TLBWriteNI /* These cmds don't exist on older MMU */
-#undef TLBIVUTLB
-#endif
-
-/* Instruction cache related Auxiliary registers */
-#define ARC_REG_IC_BCR 0x77 /* Build Config reg */
-#define ARC_REG_IC_IVIC 0x10
-#define ARC_REG_IC_CTRL 0x11
-#define ARC_REG_IC_IVIL 0x19
-#if (CONFIG_ARC_MMU_VER > 2)
-#define ARC_REG_IC_PTAG 0x1E
-#endif
-
-/* Bit val in IC_CTRL */
-#define IC_CTRL_CACHE_DISABLE 0x1
-
-/* Data cache related Auxiliary registers */
-#define ARC_REG_DC_BCR 0x72
-#define ARC_REG_DC_IVDC 0x47
-#define ARC_REG_DC_CTRL 0x48
-#define ARC_REG_DC_IVDL 0x4A
-#define ARC_REG_DC_FLSH 0x4B
-#define ARC_REG_DC_FLDL 0x4C
-#if (CONFIG_ARC_MMU_VER > 2)
-#define ARC_REG_DC_PTAG 0x5C
-#endif
-/* Bit val in DC_CTRL */
-#define DC_CTRL_INV_MODE_FLUSH 0x40
-#define DC_CTRL_FLUSH_STATUS 0x100
-
-/* MMU Management regs */
-#define ARC_REG_PID 0x409
-#define ARC_REG_SCRATCH_DATA0 0x418
-
-/* Bits in MMU PID register */
-#define MMU_ENABLE (1 << 31) /* Enable MMU for process */
/*
* Floating Pt Registers
@@ -293,24 +203,6 @@ struct bcr_identity {
#endif
};
-struct bcr_mmu_1_2 {
-#ifdef CONFIG_CPU_BIG_ENDIAN
- unsigned int ver:8, ways:4, sets:4, u_itlb:8, u_dtlb:8;
-#else
- unsigned int u_dtlb:8, u_itlb:8, sets:4, ways:4, ver:8;
-#endif
-};
-
-struct bcr_mmu_3 {
-#ifdef CONFIG_CPU_BIG_ENDIAN
- unsigned int ver:8, ways:4, sets:4, osm:1, reserv:3, pg_sz:4,
- u_itlb:4, u_dtlb:4;
-#else
- unsigned int u_dtlb:4, u_itlb:4, pg_sz:4, reserv:3, osm:1, sets:4,
- ways:4, ver:8;
-#endif
-};
-
#define EXTN_SWAP_VALID 0x1
#define EXTN_NORM_VALID 0x2
#define EXTN_MINMAX_VALID 0x2
@@ -343,14 +235,6 @@ struct bcr_extn_xymem {
#endif
};
-struct bcr_cache {
-#ifdef CONFIG_CPU_BIG_ENDIAN
- unsigned int pad:12, line_len:4, sz:4, config:4, ver:8;
-#else
- unsigned int ver:8, config:4, sz:4, line_len:4, pad:12;
-#endif
-};
-
struct bcr_perip {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int start:8, pad2:8, sz:8, pad:8;
diff --git a/arch/arc/include/asm/cache.h b/arch/arc/include/asm/cache.h
index 2fe8e41a551c..44eb07eb92e5 100644
--- a/arch/arc/include/asm/cache.h
+++ b/arch/arc/include/asm/cache.h
@@ -9,8 +9,6 @@
#ifndef __ARC_ASM_CACHE_H
#define __ARC_ASM_CACHE_H
-#include <asm/mmu.h> /* some of cache registers depend on MMU ver */
-
/* In case $$ not config, setup a dummy number for rest of kernel */
#ifndef CONFIG_ARC_CACHE_LINE_SHIFT
#define L1_CACHE_SHIFT 6
@@ -36,6 +34,13 @@
#define is_not_cache_aligned(p) ((unsigned long)p & (~DCACHE_LINE_MASK))
#endif
+/*
+ * ARC700 doesn't cache any access in top 256M.
+ * Ideal for wiring memory mapped peripherals as we don't need to do
+ * explicit uncached accesses (LD.di/ST.di) hence more portable drivers
+ */
+#define ARC_UNCACHED_ADDR_SPACE 0xc0000000
+
#ifndef __ASSEMBLY__
/* Uncached access macros */
@@ -59,16 +64,10 @@
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
-/*
- * ARC700 doesn't cache any access in top 256M.
- * Ideal for wiring memory mapped peripherals as we don't need to do
- * explicit uncached accesses (LD.di/ST.di) hence more portable drivers
- */
-#define ARC_UNCACHED_ADDR_SPACE 0xc0000000
-
extern void arc_cache_init(void);
extern char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len);
extern void __init read_decode_cache_bcr(void);
-#endif
+
+#endif /* !__ASSEMBLY__ */
#endif /* _ASM_CACHE_H */
diff --git a/arch/arc/include/asm/irqflags.h b/arch/arc/include/asm/irqflags.h
index eac071668201..d99f79bcf865 100644
--- a/arch/arc/include/asm/irqflags.h
+++ b/arch/arc/include/asm/irqflags.h
@@ -19,6 +19,26 @@
#include <asm/arcregs.h>
+/* status32 Reg bits related to Interrupt Handling */
+#define STATUS_E1_BIT 1 /* Int 1 enable */
+#define STATUS_E2_BIT 2 /* Int 2 enable */
+#define STATUS_A1_BIT 3 /* Int 1 active */
+#define STATUS_A2_BIT 4 /* Int 2 active */
+
+#define STATUS_E1_MASK (1<<STATUS_E1_BIT)
+#define STATUS_E2_MASK (1<<STATUS_E2_BIT)
+#define STATUS_A1_MASK (1<<STATUS_A1_BIT)
+#define STATUS_A2_MASK (1<<STATUS_A2_BIT)
+
+/* Other Interrupt Handling related Aux regs */
+#define AUX_IRQ_LEV 0x200 /* IRQ Priority: L1 or L2 */
+#define AUX_IRQ_HINT 0x201 /* For generating Soft Interrupts */
+#define AUX_IRQ_LV12 0x43 /* interrupt level register */
+
+#define AUX_IENABLE 0x40c
+#define AUX_ITRIGGER 0x40d
+#define AUX_IPULSE 0x415
+
#ifndef __ASSEMBLY__
/******************************************************************
diff --git a/arch/arc/include/asm/mmu.h b/arch/arc/include/asm/mmu.h
index 33548f975cd2..7c03fe61759c 100644
--- a/arch/arc/include/asm/mmu.h
+++ b/arch/arc/include/asm/mmu.h
@@ -17,6 +17,32 @@
#define CONFIG_ARC_MMU_VER 3
#endif
+/* MMU Management regs */
+#define ARC_REG_MMU_BCR 0x06f
+#define ARC_REG_TLBPD0 0x405
+#define ARC_REG_TLBPD1 0x406
+#define ARC_REG_TLBINDEX 0x407
+#define ARC_REG_TLBCOMMAND 0x408
+#define ARC_REG_PID 0x409
+#define ARC_REG_SCRATCH_DATA0 0x418
+
+/* Bits in MMU PID register */
+#define MMU_ENABLE (1 << 31) /* Enable MMU for process */
+
+/* Error code if probe fails */
+#define TLB_LKUP_ERR 0x80000000
+
+/* TLB Commands */
+#define TLBWrite 0x1
+#define TLBRead 0x2
+#define TLBGetIndex 0x3
+#define TLBProbe 0x4
+
+#if (CONFIG_ARC_MMU_VER >= 2)
+#define TLBWriteNI 0x5 /* write JTLB without inv uTLBs */
+#define TLBIVUTLB 0x6 /* explicitly inv uTLBs */
+#endif
+
#ifndef __ASSEMBLY__
typedef struct {
@@ -26,6 +52,16 @@ typedef struct {
#endif
} mm_context_t;
+#ifdef CONFIG_ARC_DBG_TLB_PARANOIA
+void tlb_paranoid_check(unsigned int pid_sw, unsigned long address);
+#else
+#define tlb_paranoid_check(a, b)
#endif
+void arc_mmu_init(void);
+extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len);
+void __init read_decode_mmu_bcr(void);
+
+#endif /* !__ASSEMBLY__ */
+
#endif
diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
index 95b1522212a7..f31dc817fe12 100644
--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -135,6 +135,12 @@
/* ioremap */
#define PAGE_KERNEL_NO_CACHE __pgprot(_K_PAGE_PERMS)
+/* Masks for actual TLB "PD"s */
+#define PTE_BITS_IN_PD0 (_PAGE_GLOBAL | _PAGE_PRESENT)
+#define PTE_BITS_IN_PD1 (PAGE_MASK | _PAGE_CACHEABLE | \
+ _PAGE_U_EXECUTE | _PAGE_U_WRITE | _PAGE_U_READ | \
+ _PAGE_K_EXECUTE | _PAGE_K_WRITE | _PAGE_K_READ)
+
/**************************************************************************
* Mapping of vm_flags (Generic VM) to PTE flags (arch specific)
*
diff --git a/arch/arc/include/asm/tlb-mmu1.h b/arch/arc/include/asm/tlb-mmu1.h
index 351ae6568d0a..8a1ec96012ae 100644
--- a/arch/arc/include/asm/tlb-mmu1.h
+++ b/arch/arc/include/asm/tlb-mmu1.h
@@ -10,7 +10,6 @@
#define __ASM_TLB_MMU_V1_H__
#include <asm/mmu.h>
-#include <asm/tlb.h>
#if defined(__ASSEMBLY__) && (CONFIG_ARC_MMU_VER == 1)
diff --git a/arch/arc/include/asm/tlb.h b/arch/arc/include/asm/tlb.h
index cb0c708ca665..a9db5f62aaf3 100644
--- a/arch/arc/include/asm/tlb.h
+++ b/arch/arc/include/asm/tlb.h
@@ -9,18 +9,6 @@
#ifndef _ASM_ARC_TLB_H
#define _ASM_ARC_TLB_H
-#ifdef __KERNEL__
-
-#include <asm/pgtable.h>
-
-/* Masks for actual TLB "PD"s */
-#define PTE_BITS_IN_PD0 (_PAGE_GLOBAL | _PAGE_PRESENT)
-#define PTE_BITS_IN_PD1 (PAGE_MASK | _PAGE_CACHEABLE | \
- _PAGE_U_EXECUTE | _PAGE_U_WRITE | _PAGE_U_READ | \
- _PAGE_K_EXECUTE | _PAGE_K_WRITE | _PAGE_K_READ)
-
-#ifndef __ASSEMBLY__
-
#define tlb_flush(tlb) \
do { \
if (tlb->fullmm) \
@@ -56,18 +44,4 @@ do { \
#include <linux/pagemap.h>
#include <asm-generic/tlb.h>
-#ifdef CONFIG_ARC_DBG_TLB_PARANOIA
-void tlb_paranoid_check(unsigned int pid_sw, unsigned long address);
-#else
-#define tlb_paranoid_check(a, b)
-#endif
-
-void arc_mmu_init(void);
-extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len);
-void __init read_decode_mmu_bcr(void);
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* __KERNEL__ */
-
#endif /* _ASM_ARC_TLB_H */
diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c
index 09f4309aa2c0..32afa54a585d 100644
--- a/arch/arc/kernel/time.c
+++ b/arch/arc/kernel/time.c
@@ -44,6 +44,17 @@
#include <asm/clk.h>
#include <asm/mach_desc.h>
+/* Timer related Aux registers */
+#define ARC_REG_TIMER0_LIMIT 0x23 /* timer 0 limit */
+#define ARC_REG_TIMER0_CTRL 0x22 /* timer 0 control */
+#define ARC_REG_TIMER0_CNT 0x21 /* timer 0 count */
+#define ARC_REG_TIMER1_LIMIT 0x102 /* timer 1 limit */
+#define ARC_REG_TIMER1_CTRL 0x101 /* timer 1 control */
+#define ARC_REG_TIMER1_CNT 0x100 /* timer 1 count */
+
+#define TIMER_CTRL_IE (1 << 0) /* Interupt when Count reachs limit */
+#define TIMER_CTRL_NH (1 << 1) /* Count only when CPU NOT halted */
+
#define ARC_TIMER_MAX 0xFFFFFFFF
/********** Clock Source Device *********/
diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c
index 28007d25066e..e9c7a66817ca 100644
--- a/arch/arc/mm/cache_arc700.c
+++ b/arch/arc/mm/cache_arc700.c
@@ -73,6 +73,33 @@
#include <asm/cachectl.h>
#include <asm/setup.h>
+/* Instruction cache related Auxiliary registers */
+#define ARC_REG_IC_BCR 0x77 /* Build Config reg */
+#define ARC_REG_IC_IVIC 0x10
+#define ARC_REG_IC_CTRL 0x11
+#define ARC_REG_IC_IVIL 0x19
+#if (CONFIG_ARC_MMU_VER > 2)
+#define ARC_REG_IC_PTAG 0x1E
+#endif
+
+/* Bit val in IC_CTRL */
+#define IC_CTRL_CACHE_DISABLE 0x1
+
+/* Data cache related Auxiliary registers */
+#define ARC_REG_DC_BCR 0x72 /* Build Config reg */
+#define ARC_REG_DC_IVDC 0x47
+#define ARC_REG_DC_CTRL 0x48
+#define ARC_REG_DC_IVDL 0x4A
+#define ARC_REG_DC_FLSH 0x4B
+#define ARC_REG_DC_FLDL 0x4C
+#if (CONFIG_ARC_MMU_VER > 2)
+#define ARC_REG_DC_PTAG 0x5C
+#endif
+
+/* Bit val in DC_CTRL */
+#define DC_CTRL_INV_MODE_FLUSH 0x40
+#define DC_CTRL_FLUSH_STATUS 0x100
+
char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len)
{
int n = 0;
@@ -104,9 +131,15 @@ char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len)
*/
void __cpuinit read_decode_cache_bcr(void)
{
- struct bcr_cache ibcr, dbcr;
struct cpuinfo_arc_cache *p_ic, *p_dc;
unsigned int cpu = smp_processor_id();
+ struct bcr_cache {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ unsigned int pad:12, line_len:4, sz:4, config:4, ver:8;
+#else
+ unsigned int ver:8, config:4, sz:4, line_len:4, pad:12;
+#endif
+ } ibcr, dbcr;
p_ic = &cpuinfo_arc700[cpu].icache;
READ_BCR(ARC_REG_IC_BCR, ibcr);
@@ -136,12 +169,10 @@ void __cpuinit read_decode_cache_bcr(void)
*/
void __cpuinit arc_cache_init(void)
{
- unsigned int temp;
unsigned int cpu = smp_processor_id();
struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache;
struct cpuinfo_arc_cache *dc = &cpuinfo_arc700[cpu].dcache;
- int way_pg_ratio = way_pg_ratio;
- int dcache_does_alias;
+ unsigned int dcache_does_alias, temp;
char str[256];
printk(arc_cache_mumbojumbo(0, str, sizeof(str)));
diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c
index 689ffd86d5e9..c0decc1f8d22 100644
--- a/arch/arc/mm/fault.c
+++ b/arch/arc/mm/fault.c
@@ -15,6 +15,7 @@
#include <linux/uaccess.h>
#include <linux/kdebug.h>
#include <asm/pgalloc.h>
+#include <asm/mmu.h>
static int handle_vmalloc_fault(struct mm_struct *mm, unsigned long address)
{
diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c
index 1ced5f18e6b3..f60807c2683d 100644
--- a/arch/arc/mm/tlb.c
+++ b/arch/arc/mm/tlb.c
@@ -55,7 +55,7 @@
#include <asm/arcregs.h>
#include <asm/setup.h>
#include <asm/mmu_context.h>
-#include <asm/tlb.h>
+#include <asm/mmu.h>
/* Need for ARC MMU v2
*
@@ -97,6 +97,7 @@
* J-TLB entry got evicted/replaced.
*/
+
/* A copy of the ASID from the PID reg is kept in asid_cache */
int asid_cache = FIRST_ASID;
@@ -466,10 +467,25 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr_unaligned,
*/
void __cpuinit read_decode_mmu_bcr(void)
{
- unsigned int tmp;
- struct bcr_mmu_1_2 *mmu2; /* encoded MMU2 attr */
- struct bcr_mmu_3 *mmu3; /* encoded MMU3 attr */
struct cpuinfo_arc_mmu *mmu = &cpuinfo_arc700[smp_processor_id()].mmu;
+ unsigned int tmp;
+ struct bcr_mmu_1_2 {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ unsigned int ver:8, ways:4, sets:4, u_itlb:8, u_dtlb:8;
+#else
+ unsigned int u_dtlb:8, u_itlb:8, sets:4, ways:4, ver:8;
+#endif
+ } *mmu2;
+
+ struct bcr_mmu_3 {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+ unsigned int ver:8, ways:4, sets:4, osm:1, reserv:3, pg_sz:4,
+ u_itlb:4, u_dtlb:4;
+#else
+ unsigned int u_dtlb:4, u_itlb:4, pg_sz:4, reserv:3, osm:1, sets:4,
+ ways:4, ver:8;
+#endif
+ } *mmu3;
tmp = read_aux_reg(ARC_REG_MMU_BCR);
mmu->ver = (tmp >> 24);
diff --git a/arch/arc/mm/tlbex.S b/arch/arc/mm/tlbex.S
index 3357d26ffe54..7bf811d51af8 100644
--- a/arch/arc/mm/tlbex.S
+++ b/arch/arc/mm/tlbex.S
@@ -39,7 +39,7 @@
#include <linux/linkage.h>
#include <asm/entry.h>
-#include <asm/tlb.h>
+#include <asm/mmu.h>
#include <asm/pgtable.h>
#include <asm/arcregs.h>
#include <asm/cache.h>