Unify the dozen pci-dma copies we had.

1 files changed, 37 insertions, 0 deletions

diff --git a/arch/mips/kernel/pci-dma.c b/arch/mips/kernel/pci-dma.c
new file mode 100644
index 000000000..de9cb90aa
--- /dev/null
+++ b/arch/mips/kernel/pci-dma.c
@@ -0,0 +1,37 @@
+/*
+ *
+ * Dynamic DMA mapping support.
+ *
+ * Copyright (C) 2000   Ani Joshi <ajoshi@unixbox.com>
+ * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
+ */
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+
+#include <asm/io.h>
+
+void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
+			   dma_addr_t * dma_handle)
+{
+	void *ret;
+	int gfp = GFP_ATOMIC;
+
+	if (hwdev == NULL || hwdev->dma_mask != 0xffffffff)
+		gfp |= GFP_DMA;
+	ret = (void *) __get_free_pages(gfp, get_order(size));
+
+	if (ret != NULL) {
+		dma_cache_inv((unsigned long) ret, size);
+		*dma_handle = virt_to_bus(ret);
+	}
+
+	return KSEG1ADDR(ret);
+}
+
+void pci_free_consistent(struct pci_dev *hwdev, size_t size,
+			 void *vaddr, dma_addr_t dma_handle)
+{
+	free_pages((unsigned long) KSEG0ADDR(vaddr), get_order(size));
+}