sh: Fixup SHMLBA definition for SH7705.

We need this set to something sensible anywhere were we have
an aliasing dcache..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

5 files changed, 38 insertions, 81 deletions

diff --git a/include/asm-sh/cpu-sh2/shmparam.h b/include/asm-sh/cpu-sh2/shmparam.h
deleted file mode 100644
index 817c182..0000000
--- a/include/asm-sh/cpu-sh2/shmparam.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * include/asm-sh/cpu-sh2/shmparam.h
- *
- * Copyright (C) 2003  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#ifndef __ASM_CPU_SH2_SHMPARAM_H
-#define __ASM_CPU_SH2_SHMPARAM_H
-
-#define	SHMLBA PAGE_SIZE		 /* attach addr a multiple of this */
-
-#endif /* __ASM_CPU_SH2_SHMPARAM_H */
-
diff --git a/include/asm-sh/cpu-sh3/cacheflush.h b/include/asm-sh/cpu-sh3/cacheflush.h
index db0cb07..97f5a64 100644
--- a/include/asm-sh/cpu-sh3/cacheflush.h
+++ b/include/asm-sh/cpu-sh3/cacheflush.h
@@ -35,47 +35,41 @@
  /* 32KB cache, 4kb PAGE sizes need to check bit 12 */
 #define CACHE_ALIAS 0x00001000
 
-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, unsigned long addr, unsigned long pfn);
-extern void flush_dcache_page(struct page *pg);
-extern void flush_icache_range(unsigned long start, unsigned long end);
-extern void flush_icache_page(struct vm_area_struct *vma, struct page *page);
-
-#define flush_dcache_mmap_lock(mapping)		do { } while (0)
-#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
-
-/* SH3 has unified cache so no special action needed here */
-#define flush_cache_sigtramp(vaddr)		do { } while (0)
-#define flush_page_to_ram(page)			do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
-
-#define p3_cache_init()				do { } while (0)
-
 #define PG_mapped	PG_arch_1
 
-/* We provide our own get_unmapped_area to avoid cache alias issue */
-#define HAVE_ARCH_UNMAPPED_AREA
-
+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 addr, unsigned long pfn);
+void flush_dcache_page(struct page *pg);
+void flush_icache_range(unsigned long start, unsigned long end);
+void flush_icache_page(struct vm_area_struct *vma, struct page *page);
 #else
-
 #define flush_cache_all()			do { } while (0)
 #define flush_cache_mm(mm)			do { } while (0)
 #define flush_cache_range(vma, start, end)	do { } while (0)
 #define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)
 #define flush_dcache_page(page)			do { } while (0)
-#define flush_dcache_mmap_lock(mapping)		do { } while (0)
-#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
 #define flush_icache_range(start, end)		do { } while (0)
 #define flush_icache_page(vma,pg)		do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
+#endif
+
+#define flush_dcache_mmap_lock(mapping)		do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
+
+/* SH3 has unified cache so no special action needed here */
 #define flush_cache_sigtramp(vaddr)		do { } while (0)
+#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
 
 #define p3_cache_init()				do { } while (0)
 
-#endif
+/*
+ * We provide our own get_unmapped_area to avoid cache aliasing issues
+ * on SH7705 with a 32KB cache, and to page align addresses in the
+ * non-aliasing case.
+ */
+#define HAVE_ARCH_UNMAPPED_AREA
 
 #endif /* __ASM_CPU_SH3_CACHEFLUSH_H */
 
diff --git a/include/asm-sh/cpu-sh3/shmparam.h b/include/asm-sh/cpu-sh3/shmparam.h
deleted file mode 100644
index da5b5ee..0000000
--- a/include/asm-sh/cpu-sh3/shmparam.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * include/asm-sh/cpu-sh3/shmparam.h
- *
- * Copyright (C) 1999 Niibe Yutaka
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#ifndef __ASM_CPU_SH3_SHMPARAM_H
-#define __ASM_CPU_SH3_SHMPARAM_H
-
-#define	SHMLBA PAGE_SIZE		 /* attach addr a multiple of this */
-
-#endif /* __ASM_CPU_SH3_SHMPARAM_H */
-
diff --git a/include/asm-sh/cpu-sh4/shmparam.h b/include/asm-sh/cpu-sh4/shmparam.h
deleted file mode 100644
index a5a0aa9..0000000
--- a/include/asm-sh/cpu-sh4/shmparam.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * include/asm-sh/cpu-sh4/shmparam.h
- *
- * Copyright (C) 1999 Niibe Yutaka
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#ifndef __ASM_CPU_SH4_SHMPARAM_H
-#define __ASM_CPU_SH4_SHMPARAM_H
-
-/*
- * SH-4 has D-cache alias issue
- */
-#define	SHMLBA (PAGE_SIZE*4)		 /* attach addr a multiple of this */
-
-#endif /* __ASM_CPU_SH4_SHMPARAM_H */
-
diff --git a/include/asm-sh/shmparam.h b/include/asm-sh/shmparam.h
index 0a95604..ba1758d 100644
--- a/include/asm-sh/shmparam.h
+++ b/include/asm-sh/shmparam.h
@@ -1,8 +1,22 @@
+/*
+ * include/asm-sh/shmparam.h
+ *
+ * Copyright (C) 1999 Niibe Yutaka
+ * Copyright (C) 2006 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
 #ifndef __ASM_SH_SHMPARAM_H
 #define __ASM_SH_SHMPARAM_H
-#ifdef __KERNEL__
 
-#include <asm/cpu/shmparam.h>
+/*
+ * SH-4 and SH-3 7705 have an aliasing dcache. Bump this up to a sensible value
+ * for everyone, and work out the specifics from the probed cache descriptor.
+ */
+#define	SHMLBA	0x4000		 /* attach addr a multiple of this */
+
+#define __ARCH_FORCE_SHMLBA
 
-#endif /* __KERNEL__ */
 #endif /* __ASM_SH_SHMPARAM_H */