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-rw-r--r--arch/powerpc/platforms/cell/spufs/file.c23
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 99c73066b82..010a51f5979 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)