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-rw-r--r--arch/sh/boards/harp/pcidma.c42
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 00000000000..475311390fd
--- /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));
+}