score: update files according to review comments

modified:   arch/score/include/asm/cacheflush.h
	modified:   arch/score/include/asm/delay.h
	modified:   arch/score/include/asm/errno.h
	modified:   arch/score/include/asm/pgtable-bits.h
	modified:   arch/score/include/asm/pgtable.h
	modified:   arch/score/include/asm/ptrace.h
	modified:   arch/score/include/asm/unistd.h
	modified:   arch/score/kernel/entry.S
	modified:   arch/score/kernel/process.c
	modified:   arch/score/kernel/ptrace.c
	modified:   arch/score/kernel/signal.c
	modified:   arch/score/kernel/sys_score.c
	modified:   arch/score/kernel/traps.c
	modified:   arch/score/mm/cache.c
Signed-off-by: Chen Liqin <liqin.chen@sunplusct.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/score/include/asm/cacheflush.h

@@ -4,18 +4,16 @@
 /* Keep includes the same across arches. */
 #include <linux/mm.h>
 
-extern void (*flush_cache_all)(void);
-extern void (*flush_cache_mm)(struct mm_struct *mm);
-extern void (*flush_cache_range)(struct vm_area_struct *vma,
+extern void flush_cache_all(void);
+extern void flush_cache_mm(struct mm_struct *mm);
+extern void flush_cache_range(struct vm_area_struct *vma,
 				unsigned long start, unsigned long end);
-extern void (*flush_cache_page)(struct vm_area_struct *vma,
+extern void flush_cache_page(struct vm_area_struct *vma,
 				unsigned long page, unsigned long pfn);
-extern void (*flush_cache_sigtramp)(unsigned long addr);
-extern void (*flush_icache_all)(void);
-extern void (*flush_icache_range)(unsigned long start, unsigned long end);
-extern void (*flush_data_cache_page)(unsigned long addr);
-
-extern void s7_flush_cache_all(void);
+extern void flush_cache_sigtramp(unsigned long addr);
+extern void flush_icache_all(void);
+extern void flush_icache_range(unsigned long start, unsigned long end);
+extern void flush_dcache_range(unsigned long start, unsigned long end);
 
 #define flush_cache_dup_mm(mm)			do {} while (0)
 #define flush_dcache_page(page)			do {} while (0)

arch/score/include/asm/delay.h

@@ -3,17 +3,22 @@
 
 static inline void __delay(unsigned long loops)
 {
+	/* 3 cycles per loop. */
 	__asm__ __volatile__ (
-		"1:\tsubi\t%0,1\n\t"
+		"1:\tsubi\t%0, 3\n\t"
 		"cmpz.c\t%0\n\t"
-		"bne\t1b\n\t"
+		"ble\t1b\n\t"
 		: "=r" (loops)
 		: "0" (loops));
 }
 
 static inline void __udelay(unsigned long usecs)
 {
-	__delay(usecs);
+	unsigned long loops_per_usec;
+
+	loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
+
+	__delay(usecs * loops_per_usec);
 }
 
 #define udelay(usecs) __udelay(usecs)

arch/score/include/asm/errno.h

@@ -2,6 +2,5 @@
 #define _ASM_SCORE_ERRNO_H
 
 #include <asm-generic/errno.h>
-#define EMAXERRNO 1024
 
 #endif /* _ASM_SCORE_ERRNO_H */

arch/score/include/asm/pgtable-bits.h

@@ -17,6 +17,8 @@
 #define _CACHE_MASK			(1<<3)
 #define _PAGE_BUFFERABLE		(1<<4)	/*Fallow Spec. */
 
+#define __READABLE	(_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED)
+#define __WRITEABLE	(_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED)
 #define _PAGE_CHG_MASK			\
 	(PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_CACHE)
 

arch/score/include/asm/pgtable.h

@@ -106,24 +106,6 @@ static inline void pmd_clear(pmd_t *pmdp)
 	((swp_entry_t) { pte_val(pte)})
 #define __swp_entry_to_pte(x)	((pte_t) {(x).val})
 
-#define __P000 __pgprot(0)
-#define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
-#define __P011 __pgprot(0)
-#define __P100 __pgprot(0)
-#define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
-#define __P111 __pgprot(0)
-
-#define __S000 __pgprot(0)
-#define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
-#define __S011 __pgprot(0)
-#define __S100 __pgprot(0)
-#define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
-#define __S111 __pgprot(0)
-
 #define pmd_page(pmd) virt_to_page(__va(pmd_val(pmd)))
 #define mk_pte(page, prot)	pfn_pte(page_to_pfn(page), prot)
 static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
@@ -136,10 +118,15 @@ static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
 #define io_remap_pfn_range(vma, vaddr, pfn, size, prot)		\
 		remap_pfn_range(vma, vaddr, pfn, size, prot)
 
-#define pgd_present(pgd)	(1) /* pages are always present on non MMU */
+/*
+ * The "pgd_xxx()" functions here are trivial for a folded two-level
+ * setup: the pgd is never bad, and a pmd always exists (as it's folded
+ * into the pgd entry)
+ */
+#define pgd_present(pgd)	(1)
 #define pgd_none(pgd)		(0)
 #define pgd_bad(pgd)		(0)
-#define pgd_clear(pgdp)
+#define pgd_clear(pgdp)		do { } while (0)
 
 #define kern_addr_valid(addr)	(1)
 #define	pmd_offset(a, b)	((void *) 0)
@@ -150,11 +137,33 @@ static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
 
 #define pud_offset(pgd, address) ((pud_t *) pgd)
 
-#define PAGE_NONE		__pgprot(0) /* these mean nothing to non MMU */
-#define PAGE_SHARED		__pgprot(0) /* these mean nothing to non MMU */
-#define PAGE_COPY		__pgprot(0) /* these mean nothing to non MMU */
-#define PAGE_READONLY		__pgprot(0) /* these mean nothing to non MMU */
-#define PAGE_KERNEL		__pgprot(0) /* these mean nothing to non MMU */
+#define PAGE_NONE	__pgprot(_PAGE_PRESENT | _PAGE_CACHE)
+#define PAGE_SHARED	__pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
+				_PAGE_CACHE)
+#define PAGE_COPY	__pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
+#define PAGE_READONLY	__pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
+#define PAGE_KERNEL	__pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
+				_PAGE_GLOBAL | _PAGE_CACHE)
+#define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \
+				__WRITEABLE | _PAGE_GLOBAL & ~_PAGE_CACHE)
+
+#define __P000	PAGE_NONE
+#define __P001	PAGE_READONLY
+#define __P010	PAGE_COPY
+#define __P011	PAGE_COPY
+#define __P100	PAGE_READONLY
+#define __P101	PAGE_READONLY
+#define __P110	PAGE_COPY
+#define __P111	PAGE_COPY
+
+#define __S000	PAGE_NONE
+#define __S001	PAGE_READONLY
+#define __S010	PAGE_SHARED
+#define __S011	PAGE_SHARED
+#define __S100	PAGE_READONLY
+#define __S101	PAGE_READONLY
+#define __S110	PAGE_SHARED
+#define __S111	PAGE_SHARED
 
 #define pgprot_noncached(x)	(x)
 

arch/score/include/asm/ptrace.h

 #ifndef _ASM_SCORE_PTRACE_H
 #define _ASM_SCORE_PTRACE_H
 
+#define PTRACE_GETREGS		12
+#define PTRACE_SETREGS		13
+
 #define PC		32
 #define CONDITION	33
 #define ECR		34
@@ -76,12 +79,17 @@ struct pt_regs {
  */
 #define user_mode(regs) 	((regs->cp0_psr & 8) == 8)
 
-#define instruction_pointer(regs) (0)
+#define instruction_pointer(regs)	((unsigned long)(regs)->cp0_epc)
 #define profile_pc(regs)		instruction_pointer(regs)
 
-extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
+extern void do_syscall_trace(struct pt_regs *regs, int entryexit);
 extern int read_tsk_long(struct task_struct *, unsigned long, unsigned long *);
-extern void clear_single_step(struct task_struct *);
-#endif
+extern int read_tsk_short(struct task_struct *, unsigned long,
+			 unsigned short *);
+
+#define arch_has_single_step()	(1)
+extern void user_enable_single_step(struct task_struct *);
+extern void user_disable_single_step(struct task_struct *);
+#endif /* __KERNEL__ */
 
 #endif /* _ASM_SCORE_PTRACE_H */

arch/score/include/asm/unistd.h

-#ifndef _ASM_SCORE_UNISTD_H
+#if !defined(_ASM_SCORE_UNISTD_H) || defined(__SYSCALL)
 #define _ASM_SCORE_UNISTD_H
 
 #define __ARCH_HAVE_MMU
+#define __ARCH_WANT_IPC_PARSE_VERSION
 
 #include <asm-generic/unistd.h>
 

arch/score/kernel/entry.S

@@ -23,7 +23,7 @@
  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#include <linux/errno.h>
+#include <linux/err.h>
 #include <linux/init.h>
 #include <linux/linkage.h>
 
@@ -434,7 +434,7 @@ stack_done:
 	sw	r8, [r0, PT_R7]
 	b 2f
 1:
-	cmpi.c	r4, -EMAXERRNO-1	# -EMAXERRNO - 1=-1134
+	cmpi.c	r4, -MAX_ERRNO - 1
 	ble	2f
 	ldi	r8, 0x1;
 	sw	r8, [r0, PT_R7]
@@ -466,7 +466,7 @@ syscall_trace_entry:
 	lw	r7, [r0, PT_R7]
 	brl	r8
 
-	li	r8, -EMAXERRNO - 1	# error?
+	li	r8, -MAX_ERRNO - 1
 	sw	r8, [r0, PT_R7]		# set error flag
 
 	neg	r4, r4			# error

arch/score/kernel/process.c

@@ -56,7 +56,7 @@ void __noreturn cpu_idle(void)
 	}
 }
 
-asmlinkage void ret_from_fork(void);
+void ret_from_fork(void);
 
 void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
 {

arch/score/kernel/ptrace.c

@@ -80,7 +80,35 @@ write_tsk_long(struct task_struct *child,
 	return copied != sizeof(val) ? -EIO : 0;
 }
 
-void set_single_step(struct task_struct *child)
+/*
+ * Get all user integer registers.
+ */
+static int ptrace_getregs(struct task_struct *tsk, void __user *uregs)
+{
+	struct pt_regs *regs = task_pt_regs(tsk);
+
+	return copy_to_user(uregs, regs, sizeof(struct pt_regs)) ? -EFAULT : 0;
+}
+
+/*
+ * Set all user integer registers.
+ */
+static int ptrace_setregs(struct task_struct *tsk, void __user *uregs)
+{
+	struct pt_regs newregs;
+	int ret;
+
+	ret = -EFAULT;
+	if (copy_from_user(&newregs, uregs, sizeof(struct pt_regs)) == 0) {
+		struct pt_regs *regs = task_pt_regs(tsk);
+		*regs = newregs;
+		ret = 0;
+	}
+
+	return ret;
+}
+
+void user_enable_single_step(struct task_struct *child)
 {
 	/* far_epc is the target of branch */
 	unsigned int epc, far_epc = 0;
@@ -201,7 +229,7 @@ void set_single_step(struct task_struct *child)
 	}
 }
 
-void clear_single_step(struct task_struct *child)
+void user_disable_single_step(struct task_struct *child)
 {
 	if (child->thread.insn1_type == 0)
 		write_tsk_short(child, child->thread.addr1,
@@ -230,54 +258,17 @@ void clear_single_step(struct task_struct *child)
 	child->thread.ss_nextcnt = 0;
 }
 
-
-void ptrace_disable(struct task_struct *child) {}
+void ptrace_disable(struct task_struct *child)
+{
+	user_disable_single_step(child);
+}
 
 long
 arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
 	int ret;
 
-	if (request == PTRACE_TRACEME) {
-		/* are we already being traced? */
-		if (current->ptrace & PT_PTRACED)
-			return -EPERM;
-
-		/* set the ptrace bit in the process flags. */
-		current->ptrace |= PT_PTRACED;
-		return 0;
-	}
-
-	ret = -ESRCH;
-	if (!child)
-		return ret;
-
-	ret = -EPERM;
-
-	if (request == PTRACE_ATTACH) {
-		ret = ptrace_attach(child);
-		return ret;
-	}
-
-	ret = ptrace_check_attach(child, request == PTRACE_KILL);
-	if (ret < 0)
-		return ret;
-
 	switch (request) {
-	case PTRACE_PEEKTEXT: /* read word at location addr. */
-	case PTRACE_PEEKDATA: {
-		unsigned long tmp;
-		int copied;
-
-		copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
-		ret = -EIO;
-		if (copied != sizeof(tmp))
-			break;
-
-		ret = put_user(tmp, (unsigned long *) data);
-		return ret;
-	}
-
 	/* Read the word at location addr in the USER area.  */
 	case PTRACE_PEEKUSR: {
 		struct pt_regs *regs;
@@ -329,15 +320,6 @@ arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		return ret;
 	}
 
-	case PTRACE_POKETEXT: /* write the word at location addr. */
-	case PTRACE_POKEDATA:
-		ret = 0;
-		if (access_process_vm(child, addr, &data, sizeof(data), 1)
-			== sizeof(data))
-			break;
-		ret = -EIO;
-		return ret;
-
 	case PTRACE_POKEUSR: {
 		struct pt_regs *regs;
 		ret = 0;
@@ -372,64 +354,16 @@ arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		break;
 	}
 
-	case PTRACE_SYSCALL: /* continue and stop at next
-				(return from) syscall. */
-	case PTRACE_CONT: { /* restart after signal. */
-		ret = -EIO;
-		if (!valid_signal(data))
+	case PTRACE_GETREGS:
+		ret = ptrace_getregs(child, (void __user *)data);
 		break;
-		if (request == PTRACE_SYSCALL)
-			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		else
-			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 
-		child->exit_code = data;
-		wake_up_process(child);
-		ret = 0;
-		break;
-	}
-
-	/*
-	 * make the child exit.  Best I can do is send it a sigkill.
-	 * perhaps it should be put in the status that it wants to
-	 * exit.
-	 */
-	case PTRACE_KILL:
-		ret = 0;
-		if (child->state == EXIT_ZOMBIE)	/* already dead. */
-			break;
-		child->exit_code = SIGKILL;
-		clear_single_step(child);
-		wake_up_process(child);
-		break;
-
-	case PTRACE_SINGLESTEP: {		/* set the trap flag. */
-		ret = -EIO;
-		if ((unsigned long) data > _NSIG)
-			break;
-		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		set_single_step(child);
-		child->exit_code = data;
-		/* give it a chance to run. */
-		wake_up_process(child);
-		ret = 0;
-		break;
-	}
-
-	case PTRACE_DETACH: /* detach a process that was attached. */
-		ret = ptrace_detach(child, data);
-		break;
-
-	case PTRACE_SETOPTIONS:
-		if (data & PTRACE_O_TRACESYSGOOD)
-			child->ptrace |= PT_TRACESYSGOOD;
-		else
-			child->ptrace &= ~PT_TRACESYSGOOD;
-		ret = 0;
+	case PTRACE_SETREGS:
+		ret = ptrace_setregs(child, (void __user *)data);
 		break;
 
 	default:
-		ret = -EIO;
+		ret = ptrace_request(child, request, addr, data);
 		break;
 	}
 

arch/score/kernel/signal.c

@@ -132,7 +132,7 @@ void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
 	return (void *)((sp - frame_size) & ~7);
 }
 
-asmlinkage int score_sigaltstack(struct pt_regs *regs)
+int score_sigaltstack(struct pt_regs *regs)
 {
 	const stack_t *uss = (const stack_t *) regs->regs[4];
 	stack_t *uoss = (stack_t *) regs->regs[5];
@@ -141,7 +141,7 @@ asmlinkage int score_sigaltstack(struct pt_regs *regs)
 	return do_sigaltstack(uss, uoss, usp);
 }
 
-asmlinkage void score_rt_sigreturn(struct pt_regs *regs)
+void score_rt_sigreturn(struct pt_regs *regs)
 {
 	struct rt_sigframe __user *frame;
 	sigset_t set;
@@ -276,7 +276,7 @@ int handle_signal(unsigned long sig, siginfo_t *info,
 	return ret;
 }
 
-asmlinkage void do_signal(struct pt_regs *regs)
+void do_signal(struct pt_regs *regs)
 {
 	struct k_sigaction ka;
 	sigset_t *oldset;

arch/score/kernel/sys_score.c

@@ -64,8 +64,7 @@ sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
  * Clone a task - this clones the calling program thread.
  * This is called indirectly via a small wrapper
  */
-asmlinkage int
-score_clone(struct pt_regs *regs)
+int score_clone(struct pt_regs *regs)
 {
 	unsigned long clone_flags;
 	unsigned long newsp;
@@ -93,7 +92,7 @@ score_clone(struct pt_regs *regs)
  * sys_execve() executes a new program.
  * This is called indirectly via a small wrapper
  */
-asmlinkage int score_execve(struct pt_regs *regs)
+int score_execve(struct pt_regs *regs)
 {
 	int error;
 	char *filename;
@@ -114,7 +113,7 @@ asmlinkage int score_execve(struct pt_regs *regs)
  * If we ever come here the user sp is bad.  Zap the process right away.
  * Due to the bad stack signaling wouldn't work.
  */
-asmlinkage void bad_stack(void)
+void bad_stack(void)
 {
 	do_exit(SIGSEGV);
 }

arch/score/kernel/traps.c

@@ -252,7 +252,7 @@ asmlinkage void do_ri(struct pt_regs *regs)
 	if (current->thread.single_step == 1) {
 		if ((epc == current->thread.addr1) ||
 		    (epc == current->thread.addr2)) {
-			clear_single_step(current);
+			user_disable_single_step(current);
 			force_sig(SIGTRAP, current);
 			return;
 		} else

arch/score/mm/cache.c

@@ -32,34 +32,26 @@
 
 #include <asm/mmu_context.h>
 
-/* Cache operations. */
-void (*flush_cache_all)(void);
-void (*__flush_cache_all)(void);
-void (*flush_cache_mm)(struct mm_struct *mm);
-void (*flush_cache_range)(struct vm_area_struct *vma,
-			unsigned long start, unsigned long end);
-void (*flush_cache_page)(struct vm_area_struct *vma,
-			unsigned long page, unsigned long pfn);
-void (*flush_icache_range)(unsigned long start, unsigned long end);
-void (*__flush_cache_vmap)(void);
-void (*__flush_cache_vunmap)(void);
-void (*flush_cache_sigtramp)(unsigned long addr);
-void (*flush_data_cache_page)(unsigned long addr);
-EXPORT_SYMBOL(flush_data_cache_page);
-void (*flush_icache_all)(void);
-
-/*Score 7 cache operations*/
-static inline void s7___flush_cache_all(void);
-static void s7_flush_cache_mm(struct mm_struct *mm);
-static void s7_flush_cache_range(struct vm_area_struct *vma,
-				unsigned long start, unsigned long end);
-static void s7_flush_cache_page(struct vm_area_struct *vma,
-				unsigned long page, unsigned long pfn);
-static void s7_flush_icache_range(unsigned long start, unsigned long end);
-static void s7_flush_cache_sigtramp(unsigned long addr);
-static void s7_flush_data_cache_page(unsigned long addr);
-static void s7_flush_dcache_range(unsigned long start, unsigned long end);
+/*
+Just flush entire Dcache!!
+You must ensure the page doesn't include instructions, because
+the function will not flush the Icache.
+The addr must be cache aligned.
+*/
+static void flush_data_cache_page(unsigned long addr)
+{
+	unsigned int i;
+	for (i = 0; i < (PAGE_SIZE / L1_CACHE_BYTES); i += L1_CACHE_BYTES) {
+		__asm__ __volatile__(
+		"cache 0x0e, [%0, 0]\n"
+		"cache 0x1a, [%0, 0]\n"
+		"nop\n"
+		: : "r" (addr));
+		addr += L1_CACHE_BYTES;
+	}
+}
 
+/* called by update_mmu_cache. */
 void __update_cache(struct vm_area_struct *vma, unsigned long address,
 		pte_t pte)
 {
@@ -74,7 +66,7 @@ void __update_cache(struct vm_area_struct *vma, unsigned long address,
 	if (page_mapping(page) && test_bit(PG_arch_1, &page->flags)) {
 		addr = (unsigned long) page_address(page);
 		if (exec)
-			s7_flush_data_cache_page(addr);
+			flush_data_cache_page(addr);
 		clear_bit(PG_arch_1, &page->flags);
 	}
 }
@@ -101,44 +93,22 @@ static inline void setup_protection_map(void)
 
 void __devinit cpu_cache_init(void)
 {
-	flush_cache_all = s7_flush_cache_all;
-	__flush_cache_all = s7___flush_cache_all;
-	flush_cache_mm = s7_flush_cache_mm;
-	flush_cache_range = s7_flush_cache_range;
-	flush_cache_page = s7_flush_cache_page;
-	flush_icache_range = s7_flush_icache_range;
-	flush_cache_sigtramp = s7_flush_cache_sigtramp;
-	flush_data_cache_page = s7_flush_data_cache_page;
-
 	setup_protection_map();
 }
 
-void s7_flush_icache_all(void)
+void flush_icache_all(void)
 {
 	__asm__ __volatile__(
-	"la r8, s7_flush_icache_all\n"
+	"la r8, flush_icache_all\n"
 	"cache 0x10, [r8, 0]\n"
 	"nop\nnop\nnop\nnop\nnop\nnop\n"
 	: : : "r8");
 }
 
-void s7_flush_dcache_all(void)
-{
-	__asm__ __volatile__(
-	"la r8, s7_flush_dcache_all\n"
-	"cache 0x1f, [r8, 0]\n"
-	"nop\nnop\nnop\nnop\nnop\nnop\n"
-	"cache 0x1a, [r8, 0]\n"
-	"nop\nnop\nnop\nnop\nnop\nnop\n"
-	: : : "r8");
-}
-
-void s7_flush_cache_all(void)
+void flush_dcache_all(void)
 {
 	__asm__ __volatile__(
-	"la r8, s7_flush_cache_all\n"
-	"cache 0x10, [r8, 0]\n"
-	"nop\nnop\nnop\nnop\nnop\nnop\n"
+	"la r8, flush_dcache_all\n"
 	"cache 0x1f, [r8, 0]\n"
 	"nop\nnop\nnop\nnop\nnop\nnop\n"
 	"cache 0x1a, [r8, 0]\n"
@@ -146,10 +116,10 @@ void s7_flush_cache_all(void)
 	: : : "r8");
 }
 
-void s7___flush_cache_all(void)
+void flush_cache_all(void)
 {
 	__asm__ __volatile__(
-	"la r8, s7_flush_cache_all\n"
+	"la r8, flush_cache_all\n"
 	"cache 0x10, [r8, 0]\n"
 	"nop\nnop\nnop\nnop\nnop\nnop\n"
 	"cache 0x1f, [r8, 0]\n"
@@ -159,11 +129,11 @@ void s7___flush_cache_all(void)
 	: : : "r8");
 }
 
-static void s7_flush_cache_mm(struct mm_struct *mm)
+void flush_cache_mm(struct mm_struct *mm)
 {
 	if (!(mm->context))
 		return;
-	s7_flush_cache_all();
+	flush_cache_all();
 }
 
 /*if we flush a range precisely , the processing may be very long.
@@ -176,8 +146,7 @@ The interface is provided in hopes that the port can find
 a suitably efficient method for removing multiple page
 sized regions from the cache.
 */
-static void
-s7_flush_cache_range(struct vm_area_struct *vma,
+void flush_cache_range(struct vm_area_struct *vma,
 		unsigned long start, unsigned long end)
 {
 	struct mm_struct *mm = vma->vm_mm;
@@ -209,27 +178,26 @@ s7_flush_cache_range(struct vm_area_struct *vma,
 		tmpend = (start | (PAGE_SIZE-1)) > end ?
 				 end : (start | (PAGE_SIZE-1));
 
-		s7_flush_dcache_range(start, tmpend);
+		flush_dcache_range(start, tmpend);
 		if (exec)
-			s7_flush_icache_range(start, tmpend);
+			flush_icache_range(start, tmpend);
 		start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1);
 	}
 }
 
-static void
-s7_flush_cache_page(struct vm_area_struct *vma,
+void flush_cache_page(struct vm_area_struct *vma,
 		unsigned long addr, unsigned long pfn)
 {
 	int exec = vma->vm_flags & VM_EXEC;
 	unsigned long kaddr = 0xa0000000 | (pfn << PAGE_SHIFT);
 
-	s7_flush_dcache_range(kaddr, kaddr + PAGE_SIZE);
+	flush_dcache_range(kaddr, kaddr + PAGE_SIZE);
 
 	if (exec)
-		s7_flush_icache_range(kaddr, kaddr + PAGE_SIZE);
+		flush_icache_range(kaddr, kaddr + PAGE_SIZE);
 }
 
-static void s7_flush_cache_sigtramp(unsigned long addr)
+void flush_cache_sigtramp(unsigned long addr)
 {
 	__asm__ __volatile__(
 	"cache 0x02, [%0, 0]\n"
@@ -247,31 +215,12 @@ static void s7_flush_cache_sigtramp(unsigned long addr)
 	: : "r" (addr));
 }
 
-/*
-Just flush entire Dcache!!
-You must ensure the page doesn't include instructions, because
-the function will not flush the Icache.
-The addr must be cache aligned.
-*/
-static void s7_flush_data_cache_page(unsigned long addr)
-{
-	unsigned int i;
-	for (i = 0; i < (PAGE_SIZE / L1_CACHE_BYTES); i += L1_CACHE_BYTES) {
-		__asm__ __volatile__(
-		"cache 0x0e, [%0, 0]\n"
-		"cache 0x1a, [%0, 0]\n"
-		"nop\n"
-		: : "r" (addr));
-		addr += L1_CACHE_BYTES;
-	}
-}
-
 /*
 1. WB and invalid a cache line of Dcache
 2. Drain Write Buffer
 the range must be smaller than PAGE_SIZE
 */
-static void s7_flush_dcache_range(unsigned long start, unsigned long end)
+void flush_dcache_range(unsigned long start, unsigned long end)
 {
 	int size, i;
 
@@ -290,7 +239,7 @@ static void s7_flush_dcache_range(unsigned long start, unsigned long end)
 	}
 }
 
-static void s7_flush_icache_range(unsigned long start, unsigned long end)
+void flush_icache_range(unsigned long start, unsigned long end)
 {
 	int size, i;
 	start = start & ~(L1_CACHE_BYTES - 1);