[MIPS] Handle IDE PIO cache aliases on SMP.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

5 files changed, 15 insertions, 0 deletions

diff --git a/arch/mips/mm/c-r3k.c b/arch/mips/mm/c-r3k.c
index 9dd1352d5748..bb041a22f20a 100644
--- a/arch/mips/mm/c-r3k.c
+++ b/arch/mips/mm/c-r3k.c
@@ -260,6 +260,10 @@ static void r3k_flush_cache_page(struct vm_area_struct *vma, unsigned long page,
 {
 }
 
+static void local_r3k_flush_data_cache_page(unsigned long addr)
+{
+}
+
 static void r3k_flush_data_cache_page(unsigned long addr)
 {
 }
@@ -335,6 +339,7 @@ void __init r3k_cache_init(void)
 	flush_icache_range = r3k_flush_icache_range;
 
 	flush_cache_sigtramp = r3k_flush_cache_sigtramp;
+	local_flush_data_cache_page = local_r3k_flush_data_cache_page;
 	flush_data_cache_page = r3k_flush_data_cache_page;
 
 	_dma_cache_wback_inv = r3k_dma_cache_wback_inv;
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index c4c208449d87..d88c6686413a 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1199,6 +1199,7 @@ void __init r4k_cache_init(void)
 
 	flush_cache_sigtramp	= r4k_flush_cache_sigtramp;
 	flush_icache_all	= r4k_flush_icache_all;
+	local_flush_data_cache_page	= local_r4k_flush_data_cache_page;
 	flush_data_cache_page	= r4k_flush_data_cache_page;
 	flush_icache_range	= r4k_flush_icache_range;
 
diff --git a/arch/mips/mm/c-sb1.c b/arch/mips/mm/c-sb1.c
index 2f08b535f20e..f9b129491b1e 100644
--- a/arch/mips/mm/c-sb1.c
+++ b/arch/mips/mm/c-sb1.c
@@ -528,6 +528,7 @@ void sb1_cache_init(void)
 	flush_cache_page = sb1_flush_cache_page;
 
 	flush_cache_sigtramp = sb1_flush_cache_sigtramp;
+	local_flush_data_cache_page = (void *) sb1_nop;
 	flush_data_cache_page = (void *) sb1_nop;
 
 	/* Full flush */
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index fe232e3988e3..5dfc9b1901f6 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -216,6 +216,11 @@ static void tx39_flush_cache_page(struct vm_area_struct *vma, unsigned long page
 		tx39_blast_icache_page_indexed(page);
 }
 
+static void local_tx39_flush_data_cache_page(void * addr)
+{
+	tx39_blast_dcache_page(addr);
+}
+
 static void tx39_flush_data_cache_page(unsigned long addr)
 {
 	tx39_blast_dcache_page(addr);
@@ -381,6 +386,7 @@ void __init tx39_cache_init(void)
 		flush_icache_range	= (void *) tx39h_flush_icache_all;
 
 		flush_cache_sigtramp	= (void *) tx39h_flush_icache_all;
+		local_flush_data_cache_page	= (void *) tx39h_flush_icache_all;
 		flush_data_cache_page	= (void *) tx39h_flush_icache_all;
 
 		_dma_cache_wback_inv	= tx39h_dma_cache_wback_inv;
@@ -406,6 +412,7 @@ void __init tx39_cache_init(void)
 		flush_icache_range = tx39_flush_icache_range;
 
 		flush_cache_sigtramp = tx39_flush_cache_sigtramp;
+		local_flush_data_cache_page = local_tx39_flush_data_cache_page;
 		flush_data_cache_page = tx39_flush_data_cache_page;
 
 		_dma_cache_wback_inv = tx39_dma_cache_wback_inv;
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 591c22b080e4..83a56296be86 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -30,6 +30,7 @@ void (*flush_icache_page)(struct vm_area_struct *vma, struct page *page);
 
 /* MIPS specific cache operations */
 void (*flush_cache_sigtramp)(unsigned long addr);
+void (*local_flush_data_cache_page)(void * addr);
 void (*flush_data_cache_page)(unsigned long addr);
 void (*flush_icache_all)(void);