patch-2.4.6 linux/arch/mips/kernel/pci-dma.c
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- Lines: 42
- Date:
Mon Jul 2 13:56:40 2001
- Orig file:
v2.4.5/linux/arch/mips/kernel/pci-dma.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.4.5/linux/arch/mips/kernel/pci-dma.c linux/arch/mips/kernel/pci-dma.c
@@ -0,0 +1,41 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
+ * Copyright (C) 2000 Ralf Baechle <ralf@gnu.org>
+ * 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) {
+ memset(ret, 0, size);
+ dma_cache_wback_inv((unsigned long) ret, size);
+ *dma_handle = virt_to_bus(ret);
+ ret = KSEG1ADDR(ret);
+ }
+
+ return 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));
+}
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