1 files changed, 23 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 99c73066b82f..010a51f59796 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -288,9 +288,32 @@ spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
         return VM_FAULT_NOPAGE;
 }
 
+static int spufs_mem_mmap_access(struct vm_area_struct *vma,
+                                unsigned long address,
+                                void *buf, int len, int write)
+{
+        struct spu_context *ctx = vma->vm_file->private_data;
+        unsigned long offset = address - vma->vm_start;
+        char *local_store;
+
+        if (write && !(vma->vm_flags & VM_WRITE))
+                return -EACCES;
+        if (spu_acquire(ctx))
+                return -EINTR;
+        if ((offset + len) > vma->vm_end)
+                len = vma->vm_end - offset;
+        local_store = ctx->ops->get_ls(ctx);
+        if (write)
+                memcpy_toio(local_store + offset, buf, len);
+        else
+                memcpy_fromio(buf, local_store + offset, len);
+        spu_release(ctx);
+        return len;
+}
 
 static struct vm_operations_struct spufs_mem_mmap_vmops = {
         .fault = spufs_mem_mmap_fault,
+        .access = spufs_mem_mmap_access,
 };
 
 static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)