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authorChen Liqin <liqin.chen@sunplusct.com>2009-06-19 13:53:49 +0800
committerArnd Bergmann <arnd@arndb.de>2009-06-19 11:40:13 +0200
commit0402c91af944c61bf788370f03326959a35cb8be (patch)
tree1f522cec2d62050e7fcaed676005b7d43922276e /arch/score
parent6bcf67374137f433e85aa42a18fde9f0e8562901 (diff)
downloadlinux-2.6.34-ux500-0402c91af944c61bf788370f03326959a35cb8be.tar.gz
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>
Diffstat (limited to 'arch/score')
-rw-r--r--arch/score/include/asm/cacheflush.h18
-rw-r--r--arch/score/include/asm/delay.h11
-rw-r--r--arch/score/include/asm/errno.h1
-rw-r--r--arch/score/include/asm/pgtable-bits.h2
-rw-r--r--arch/score/include/asm/pgtable.h59
-rw-r--r--arch/score/include/asm/ptrace.h18
-rw-r--r--arch/score/include/asm/unistd.h3
-rw-r--r--arch/score/kernel/entry.S6
-rw-r--r--arch/score/kernel/process.c2
-rw-r--r--arch/score/kernel/ptrace.c144
-rw-r--r--arch/score/kernel/signal.c6
-rw-r--r--arch/score/kernel/sys_score.c7
-rw-r--r--arch/score/kernel/traps.c2
-rw-r--r--arch/score/mm/cache.c125
14 files changed, 154 insertions, 250 deletions
diff --git a/arch/score/include/asm/cacheflush.h b/arch/score/include/asm/cacheflush.h
index 1c74628caf7..07cc8fc457c 100644
--- a/arch/score/include/asm/cacheflush.h
+++ b/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)
diff --git a/arch/score/include/asm/delay.h b/arch/score/include/asm/delay.h
index ad716f6d922..6726ec199dc 100644
--- a/arch/score/include/asm/delay.h
+++ b/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)
diff --git a/arch/score/include/asm/errno.h b/arch/score/include/asm/errno.h
index 7cd3e1f07c0..29ff39d5ab4 100644
--- a/arch/score/include/asm/errno.h
+++ b/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 */
diff --git a/arch/score/include/asm/pgtable-bits.h b/arch/score/include/asm/pgtable-bits.h
index ca16d357a64..7d65a96a82e 100644
--- a/arch/score/include/asm/pgtable-bits.h
+++ b/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)
diff --git a/arch/score/include/asm/pgtable.h b/arch/score/include/asm/pgtable.h
index 0f7177a4220..5e913e57c67 100644
--- a/arch/score/include/asm/pgtable.h
+++ b/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)
diff --git a/arch/score/include/asm/ptrace.h b/arch/score/include/asm/ptrace.h
index 1a4900ac49f..66b14c8891c 100644
--- a/arch/score/include/asm/ptrace.h
+++ b/arch/score/include/asm/ptrace.h
@@ -1,6 +1,9 @@
#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 profile_pc(regs) instruction_pointer(regs)
+#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 */
diff --git a/arch/score/include/asm/unistd.h b/arch/score/include/asm/unistd.h
index 9aa3a159bbf..f0f84deeb56 100644
--- a/arch/score/include/asm/unistd.h
+++ b/arch/score/include/asm/unistd.h
@@ -1,7 +1,8 @@
-#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>
diff --git a/arch/score/kernel/entry.S b/arch/score/kernel/entry.S
index 6c6b7ea58af..0af89b2f16b 100644
--- a/arch/score/kernel/entry.S
+++ b/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
diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c
index aaa3085251f..d93966f7ac8 100644
--- a/arch/score/kernel/process.c
+++ b/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)
{
diff --git a/arch/score/kernel/ptrace.c b/arch/score/kernel/ptrace.c
index 8fe7209355a..19911e3187b 100644
--- a/arch/score/kernel/ptrace.c
+++ b/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))
- 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);
+ case PTRACE_GETREGS:
+ ret = ptrace_getregs(child, (void __user *)data);
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;
}
diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c
index b4ed1b3f807..5c004084d17 100644
--- a/arch/score/kernel/signal.c
+++ b/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;
diff --git a/arch/score/kernel/sys_score.c b/arch/score/kernel/sys_score.c
index 6a60d1ee533..68655f4cbce 100644
--- a/arch/score/kernel/sys_score.c
+++ b/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);
}
diff --git a/arch/score/kernel/traps.c b/arch/score/kernel/traps.c
index 957ae9eb356..0e46fb19a84 100644
--- a/arch/score/kernel/traps.c
+++ b/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
diff --git a/arch/score/mm/cache.c b/arch/score/mm/cache.c
index 1ebc67f18c6..dbac9d9dfdd 100644
--- a/arch/score/mm/cache.c
+++ b/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"
@@ -248,30 +216,11 @@ static void s7_flush_cache_sigtramp(unsigned long 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);