1 files changed, 42 insertions, 0 deletions

diff --git a/arch/sh/boards/harp/pcidma.c b/arch/sh/boards/harp/pcidma.c
new file mode 100644
index 000000000000..475311390fd6
--- /dev/null
+++ b/arch/sh/boards/harp/pcidma.c
@@ -0,0 +1,42 @@
+/* 
+ * Copyright (C) 2001 David J. Mckay (david.mckay@st.com)
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.                            
+ *
+ * Dynamic DMA mapping support.
+ */
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+#include <asm/addrspace.h>
+
+
+void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
+                           dma_addr_t * dma_handle)
+{
+        void *ret;
+        int gfp = GFP_ATOMIC;
+
+        ret = (void *) __get_free_pages(gfp, get_order(size));
+
+        if (ret != NULL) {
+                /* Is it neccessary to do the memset? */
+                memset(ret, 0, size);
+                *dma_handle = virt_to_bus(ret);
+        }
+        /* We must flush the cache before we pass it on to the device */
+        flush_cache_all();
+        return  P2SEGADDR(ret);
+}
+
+void pci_free_consistent(struct pci_dev *hwdev, size_t size,
+                         void *vaddr, dma_addr_t dma_handle)
+{
+        unsigned long p1addr=P1SEGADDR((unsigned long)vaddr);
+
+        free_pages(p1addr, get_order(size));
+}