cris: use dma-direct

[sfrench/cifs-2.6.git] / arch / cris / arch-v32 / drivers / pci / dma.c

diff --git a/arch/cris/arch-v32/drivers/pci/dma.c b/arch/cris/arch-v32/drivers/pci/dma.c
deleted file mode 100644 (file)
index 8c38022..0000000
--- a/arch/cris/arch-v32/drivers/pci/dma.c
+++ /dev/null
@@ -1,77 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Dynamic DMA mapping support.
- *
- * On cris there is no hardware dynamic DMA address translation,
- * so consistent alloc/free are merely page allocation/freeing.
- * The rest of the dynamic DMA mapping interface is implemented
- * in asm/pci.h.
- *
- * Borrowed from i386.
- */
-
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <linux/gfp.h>
-#include <asm/io.h>
-
-static void *v32_dma_alloc(struct device *dev, size_t size,
-               dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
-{
-       void *ret;
-
-       if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-               gfp |= GFP_DMA;
-
-       ret = (void *)__get_free_pages(gfp,  get_order(size));
-
-       if (ret != NULL) {
-               memset(ret, 0, size);
-               *dma_handle = virt_to_phys(ret);
-       }
-       return ret;
-}
-
-static void v32_dma_free(struct device *dev, size_t size, void *vaddr,
-               dma_addr_t dma_handle, unsigned long attrs)
-{
-       free_pages((unsigned long)vaddr, get_order(size));
-}
-
-static inline dma_addr_t v32_dma_map_page(struct device *dev,
-               struct page *page, unsigned long offset, size_t size,
-               enum dma_data_direction direction, unsigned long attrs)
-{
-       return page_to_phys(page) + offset;
-}
-
-static inline int v32_dma_map_sg(struct device *dev, struct scatterlist *sg,
-               int nents, enum dma_data_direction direction,
-               unsigned long attrs)
-{
-       printk("Map sg\n");
-       return nents;
-}
-
-static inline int v32_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 v32_dma_ops = {
-       .alloc                  = v32_dma_alloc,
-       .free                   = v32_dma_free,
-       .map_page               = v32_dma_map_page,
-       .map_sg                 = v32_dma_map_sg,
-       .dma_supported          = v32_dma_supported,
-};
-EXPORT_SYMBOL(v32_dma_ops);