powerpc/spufs: avoid magic numbers for mapping sizes

Use a set of #defines for the size of context mappings, instead of
magic numbers.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

arch/powerpc/platforms/cell/spufs/context.c

@@ -130,17 +130,17 @@ void spu_unmap_mappings(struct spu_context *ctx)
 	if (ctx->local_store)
 		unmap_mapping_range(ctx->local_store, 0, LS_SIZE, 1);
 	if (ctx->mfc)
-		unmap_mapping_range(ctx->mfc, 0, 0x1000, 1);
+		unmap_mapping_range(ctx->mfc, 0, SPUFS_MFC_MAP_SIZE, 1);
 	if (ctx->cntl)
-		unmap_mapping_range(ctx->cntl, 0, 0x1000, 1);
+		unmap_mapping_range(ctx->cntl, 0, SPUFS_CNTL_MAP_SIZE, 1);
 	if (ctx->signal1)
-		unmap_mapping_range(ctx->signal1, 0, PAGE_SIZE, 1);
+		unmap_mapping_range(ctx->signal1, 0, SPUFS_SIGNAL_MAP_SIZE, 1);
 	if (ctx->signal2)
-		unmap_mapping_range(ctx->signal2, 0, PAGE_SIZE, 1);
+		unmap_mapping_range(ctx->signal2, 0, SPUFS_SIGNAL_MAP_SIZE, 1);
 	if (ctx->mss)
-		unmap_mapping_range(ctx->mss, 0, 0x1000, 1);
+		unmap_mapping_range(ctx->mss, 0, SPUFS_MSS_MAP_SIZE, 1);
 	if (ctx->psmap)
-		unmap_mapping_range(ctx->psmap, 0, 0x20000, 1);
+		unmap_mapping_range(ctx->psmap, 0, SPUFS_PS_MAP_SIZE, 1);
 	mutex_unlock(&ctx->mapping_lock);
 }
 

arch/powerpc/platforms/cell/spufs/file.c

@@ -410,7 +410,7 @@ static int spufs_ps_fault(struct vm_area_struct *vma,
 static int spufs_cntl_mmap_fault(struct vm_area_struct *vma,
 					   struct vm_fault *vmf)
 {
-	return spufs_ps_fault(vma, vmf, 0x4000, 0x1000);
+	return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE);
 }
 
 static struct vm_operations_struct spufs_cntl_mmap_vmops = {
@@ -1102,13 +1102,13 @@ static ssize_t spufs_signal1_write(struct file *file, const char __user *buf,
 static int
 spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-#if PAGE_SIZE == 0x1000
-	return spufs_ps_fault(vma, vmf, 0x14000, 0x1000);
-#elif PAGE_SIZE == 0x10000
+#if SPUFS_SIGNAL_MAP_SIZE == 0x1000
+	return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE);
+#elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
 	/* For 64k pages, both signal1 and signal2 can be used to mmap the whole
 	 * signal 1 and 2 area
 	 */
-	return spufs_ps_fault(vma, vmf, 0x10000, 0x10000);
+	return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
 #else
 #error unsupported page size
 #endif
@@ -1239,13 +1239,13 @@ static ssize_t spufs_signal2_write(struct file *file, const char __user *buf,
 static int
 spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-#if PAGE_SIZE == 0x1000
-	return spufs_ps_fault(vma, vmf, 0x1c000, 0x1000);
-#elif PAGE_SIZE == 0x10000
+#if SPUFS_SIGNAL_MAP_SIZE == 0x1000
+	return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE);
+#elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
 	/* For 64k pages, both signal1 and signal2 can be used to mmap the whole
 	 * signal 1 and 2 area
 	 */
-	return spufs_ps_fault(vma, vmf, 0x10000, 0x10000);
+	return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
 #else
 #error unsupported page size
 #endif
@@ -1367,7 +1367,7 @@ DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get,
 static int
 spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-	return spufs_ps_fault(vma, vmf, 0x0000, 0x1000);
+	return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE);
 }
 
 static struct vm_operations_struct spufs_mss_mmap_vmops = {
@@ -1429,7 +1429,7 @@ static const struct file_operations spufs_mss_fops = {
 static int
 spufs_psmap_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-	return spufs_ps_fault(vma, vmf, 0x0000, 0x20000);
+	return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE);
 }
 
 static struct vm_operations_struct spufs_psmap_mmap_vmops = {
@@ -1489,7 +1489,7 @@ static const struct file_operations spufs_psmap_fops = {
 static int
 spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-	return spufs_ps_fault(vma, vmf, 0x3000, 0x1000);
+	return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE);
 }
 
 static struct vm_operations_struct spufs_mfc_mmap_vmops = {

arch/powerpc/platforms/cell/spufs/spufs.h

@@ -32,6 +32,13 @@
 #include <asm/spu_csa.h>
 #include <asm/spu_info.h>
 
+#define SPUFS_PS_MAP_SIZE	0x20000
+#define SPUFS_MFC_MAP_SIZE	0x1000
+#define SPUFS_CNTL_MAP_SIZE	0x1000
+#define SPUFS_CNTL_MAP_SIZE	0x1000
+#define SPUFS_SIGNAL_MAP_SIZE	PAGE_SIZE
+#define SPUFS_MSS_MAP_SIZE	0x1000
+
 /* The magic number for our file system */
 enum {
 	SPUFS_MAGIC = 0x23c9b64e,