summaryrefslogtreecommitdiffstats
path: root/arch/frv/mb93090-mb00/pci-dma.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/frv/mb93090-mb00/pci-dma.c')
-rw-r--r--arch/frv/mb93090-mb00/pci-dma.c118
1 files changed, 0 insertions, 118 deletions
diff --git a/arch/frv/mb93090-mb00/pci-dma.c b/arch/frv/mb93090-mb00/pci-dma.c
deleted file mode 100644
index e7130abc0dae..000000000000
--- a/arch/frv/mb93090-mb00/pci-dma.c
+++ /dev/null
@@ -1,118 +0,0 @@
-/* pci-dma.c: Dynamic DMA mapping support for the FRV CPUs that have MMUs
- *
- * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/types.h>
-#include <linux/dma-mapping.h>
-#include <linux/list.h>
-#include <linux/pci.h>
-#include <linux/export.h>
-#include <linux/highmem.h>
-#include <linux/scatterlist.h>
-#include <asm/io.h>
-
-static void *frv_dma_alloc(struct device *hwdev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
-{
- void *ret;
-
- ret = consistent_alloc(gfp, size, dma_handle);
- if (ret)
- memset(ret, 0, size);
-
- return ret;
-}
-
-static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr,
- dma_addr_t dma_handle, unsigned long attrs)
-{
- consistent_free(vaddr);
-}
-
-static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction direction,
- unsigned long attrs)
-{
- struct scatterlist *sg;
- unsigned long dampr2;
- void *vaddr;
- int i;
-
- BUG_ON(direction == DMA_NONE);
-
- if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
- return nents;
-
- dampr2 = __get_DAMPR(2);
-
- for_each_sg(sglist, sg, nents, i) {
- vaddr = kmap_atomic_primary(sg_page(sg));
-
- frv_dcache_writeback((unsigned long) vaddr,
- (unsigned long) vaddr + PAGE_SIZE);
-
- }
-
- kunmap_atomic_primary(vaddr);
- if (dampr2) {
- __set_DAMPR(2, dampr2);
- __set_IAMPR(2, dampr2);
- }
-
- return nents;
-}
-
-static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction direction, unsigned long attrs)
-{
- if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- flush_dcache_page(page);
-
- return (dma_addr_t) page_to_phys(page) + offset;
-}
-
-static void frv_dma_sync_single_for_device(struct device *dev,
- dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-static void frv_dma_sync_sg_for_device(struct device *dev,
- struct scatterlist *sg, int nelems,
- enum dma_data_direction direction)
-{
- flush_write_buffers();
-}
-
-
-static int frv_dma_supported(struct device *dev, u64 mask)
-{
- /*
- * we fall back to GFP_DMA when the mask isn't all 1s,
- * so we can't guarantee allocations that must be
- * within a tighter range than GFP_DMA..
- */
- if (mask < 0x00ffffff)
- return 0;
- return 1;
-}
-
-const struct dma_map_ops frv_dma_ops = {
- .alloc = frv_dma_alloc,
- .free = frv_dma_free,
- .map_page = frv_dma_map_page,
- .map_sg = frv_dma_map_sg,
- .sync_single_for_device = frv_dma_sync_single_for_device,
- .sync_sg_for_device = frv_dma_sync_sg_for_device,
- .dma_supported = frv_dma_supported,
-};
-EXPORT_SYMBOL(frv_dma_ops);