sh: Centralize the CPU cache initialization routines.

This provides a central point for CPU cache initialization routines.
This replaces the antiquated p3_cache_init() method, which the vast
majority of CPUs never cared about.

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

10 files changed, 16 insertions, 13 deletions

diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h
index 9ec13fb909dd..e37654f7f545 100644
--- a/arch/sh/include/asm/cacheflush.h
+++ b/arch/sh/include/asm/cacheflush.h
@@ -12,7 +12,6 @@
  *
  * See arch/sh/kernel/cpu/init.c:cache_init().
  */
-#define p3_cache_init()                         do { } while (0)
 #define flush_cache_all()                       do { } while (0)
 #define flush_cache_mm(mm)                      do { } while (0)
 #define flush_cache_dup_mm(mm)                  do { } while (0)
@@ -78,5 +77,7 @@ void kunmap_coherent(void);
 
 #define PG_dcache_dirty PG_arch_1
 
+void cpu_cache_init(void);
+
 #endif /* __KERNEL__ */
 #endif /* __ASM_SH_CACHEFLUSH_H */
diff --git a/arch/sh/include/cpu-common/cpu/cacheflush.h b/arch/sh/include/cpu-common/cpu/cacheflush.h
index c3db00b73605..0c38278509cb 100644
--- a/arch/sh/include/cpu-common/cpu/cacheflush.h
+++ b/arch/sh/include/cpu-common/cpu/cacheflush.h
@@ -39,6 +39,4 @@
 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
 #define flush_cache_sigtramp(vaddr)             do { } while (0)
 
-#define p3_cache_init()                         do { } while (0)
-
 #endif /* __ASM_CPU_SH2_CACHEFLUSH_H */
diff --git a/arch/sh/include/cpu-sh2a/cpu/cacheflush.h b/arch/sh/include/cpu-sh2a/cpu/cacheflush.h
index 3d3b9205d2ac..b9eaa19325e2 100644
--- a/arch/sh/include/cpu-sh2a/cpu/cacheflush.h
+++ b/arch/sh/include/cpu-sh2a/cpu/cacheflush.h
@@ -30,5 +30,4 @@ void flush_icache_range(unsigned long start, unsigned long end);
 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
 #define flush_cache_sigtramp(vaddr)             do { } while (0)
 
-#define p3_cache_init()                         do { } while (0)
 #endif /* __ASM_CPU_SH2A_CACHEFLUSH_H */
diff --git a/arch/sh/include/cpu-sh3/cpu/cacheflush.h b/arch/sh/include/cpu-sh3/cpu/cacheflush.h
index 3b5f3df4e1c8..cf656a093770 100644
--- a/arch/sh/include/cpu-sh3/cpu/cacheflush.h
+++ b/arch/sh/include/cpu-sh3/cpu/cacheflush.h
@@ -32,8 +32,6 @@ void flush_icache_page(struct vm_area_struct *vma, struct page *page);
 #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)
-
 #else
 #include <cpu-common/cpu/cacheflush.h>
 #endif
diff --git a/arch/sh/include/cpu-sh4/cpu/cacheflush.h b/arch/sh/include/cpu-sh4/cpu/cacheflush.h
index 76764f0fb88a..a28c542f5179 100644
--- a/arch/sh/include/cpu-sh4/cpu/cacheflush.h
+++ b/arch/sh/include/cpu-sh4/cpu/cacheflush.h
@@ -35,7 +35,4 @@ void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
 
 #define flush_icache_page(vma,pg)               do { } while (0)
 
-/* Initialization of P3 area for copy_user_page */
-void p3_cache_init(void);
-
 #endif /* __ASM_CPU_SH4_CACHEFLUSH_H */
diff --git a/arch/sh/include/cpu-sh5/cpu/cacheflush.h b/arch/sh/include/cpu-sh5/cpu/cacheflush.h
index 5a11f0b7e66a..8350cc7ed1c5 100644
--- a/arch/sh/include/cpu-sh5/cpu/cacheflush.h
+++ b/arch/sh/include/cpu-sh5/cpu/cacheflush.h
@@ -25,7 +25,6 @@ extern void flush_icache_user_range(struct vm_area_struct *vma,
 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
 
 #define flush_icache_page(vma, page)    do { } while (0)
-void p3_cache_init(void);
 
 #endif /* __ASSEMBLY__ */
 
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index 92f87a460a81..df2eb87f1524 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -94,7 +94,7 @@ static void __init emit_cache_params(void)
 /*
  * SH-4 has virtually indexed and physically tagged cache.
  */
-void __init p3_cache_init(void)
+void __init sh4_cache_init(void)
 {
         compute_alias(&boot_cpu_data.icache);
         compute_alias(&boot_cpu_data.dcache);
diff --git a/arch/sh/mm/cache-sh5.c b/arch/sh/mm/cache-sh5.c
index 28f3c8fb1b99..576cad04b11b 100644
--- a/arch/sh/mm/cache-sh5.c
+++ b/arch/sh/mm/cache-sh5.c
@@ -23,7 +23,7 @@
 /* Wired TLB entry for the D-cache */
 static unsigned long long dtlb_cache_slot;
 
-void __init p3_cache_init(void)
+void __init cpu_cache_init(void)
 {
         /* Reserve a slot for dcache colouring in the DTLB */
         dtlb_cache_slot = sh64_get_wired_dtlb_entry();
diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c
index f51d0a4eb3ba..659981ffae24 100644
--- a/arch/sh/mm/cache.c
+++ b/arch/sh/mm/cache.c
@@ -127,3 +127,14 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr)
                         __flush_wback_region((void *)addr, PAGE_SIZE);
         }
 }
+
+void __init cpu_cache_init(void)
+{
+        if ((boot_cpu_data.family == CPU_FAMILY_SH4) ||
+            (boot_cpu_data.family == CPU_FAMILY_SH4A) ||
+            (boot_cpu_data.family == CPU_FAMILY_SH4AL_DSP)) {
+                extern void __weak sh4_cache_init(void);
+
+                sh4_cache_init();
+        }
+}
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index fe532aeaa16d..cf0e9c5146b1 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -230,7 +230,7 @@ void __init mem_init(void)
                 datasize >> 10,
                 initsize >> 10);
 
-        p3_cache_init();
+        cpu_cache_init();
 
         /* Initialize the vDSO */
         vsyscall_init();