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-rw-r--r--arch/m68k/kernel/dma.c165
-rw-r--r--arch/m68k/kernel/dma_mm.c131
-rw-r--r--arch/m68k/kernel/dma_no.c75
3 files changed, 162 insertions, 209 deletions
diff --git a/arch/m68k/kernel/dma.c b/arch/m68k/kernel/dma.c
index 90e8cb726c8c..f6daf6e15d2e 100644
--- a/arch/m68k/kernel/dma.c
+++ b/arch/m68k/kernel/dma.c
@@ -1,5 +1,164 @@
+/*
+ * 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.
+ */
+
+#undef DEBUG
+
+#include <linux/dma-mapping.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/export.h>
+
+#include <asm/pgalloc.h>
+
#ifdef CONFIG_MMU
-#include "dma_mm.c"
+
+void *dma_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *handle, gfp_t flag)
+{
+ struct page *page, **map;
+ pgprot_t pgprot;
+ void *addr;
+ int i, order;
+
+ pr_debug("dma_alloc_coherent: %d,%x\n", size, flag);
+
+ size = PAGE_ALIGN(size);
+ order = get_order(size);
+
+ page = alloc_pages(flag, order);
+ if (!page)
+ return NULL;
+
+ *handle = page_to_phys(page);
+ map = kmalloc(sizeof(struct page *) << order, flag & ~__GFP_DMA);
+ if (!map) {
+ __free_pages(page, order);
+ return NULL;
+ }
+ split_page(page, order);
+
+ order = 1 << order;
+ size >>= PAGE_SHIFT;
+ map[0] = page;
+ for (i = 1; i < size; i++)
+ map[i] = page + i;
+ for (; i < order; i++)
+ __free_page(page + i);
+ pgprot = __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY);
+ if (CPU_IS_040_OR_060)
+ pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S;
+ else
+ pgprot_val(pgprot) |= _PAGE_NOCACHE030;
+ addr = vmap(map, size, VM_MAP, pgprot);
+ kfree(map);
+
+ return addr;
+}
+
+void dma_free_coherent(struct device *dev, size_t size,
+ void *addr, dma_addr_t handle)
+{
+ pr_debug("dma_free_coherent: %p, %x\n", addr, handle);
+ vfree(addr);
+}
+
#else
-#include "dma_no.c"
-#endif
+
+#include <asm/cacheflush.h>
+
+void *dma_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t gfp)
+{
+ void *ret;
+ /* ignore region specifiers */
+ gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
+
+ if (dev == NULL || (*dev->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;
+}
+
+void dma_free_coherent(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma_handle)
+{
+ free_pages((unsigned long)vaddr, get_order(size));
+}
+
+#endif /* CONFIG_MMU */
+
+EXPORT_SYMBOL(dma_alloc_coherent);
+EXPORT_SYMBOL(dma_free_coherent);
+
+void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
+ size_t size, enum dma_data_direction dir)
+{
+ switch (dir) {
+ case DMA_TO_DEVICE:
+ cache_push(handle, size);
+ break;
+ case DMA_FROM_DEVICE:
+ cache_clear(handle, size);
+ break;
+ default:
+ if (printk_ratelimit())
+ printk("dma_sync_single_for_device: unsupported dir %u\n", dir);
+ break;
+ }
+}
+EXPORT_SYMBOL(dma_sync_single_for_device);
+
+void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction dir)
+{
+ int i;
+
+ for (i = 0; i < nents; sg++, i++)
+ dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir);
+}
+EXPORT_SYMBOL(dma_sync_sg_for_device);
+
+dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size,
+ enum dma_data_direction dir)
+{
+ dma_addr_t handle = virt_to_bus(addr);
+
+ dma_sync_single_for_device(dev, handle, size, dir);
+ return handle;
+}
+EXPORT_SYMBOL(dma_map_single);
+
+dma_addr_t dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir)
+{
+ dma_addr_t handle = page_to_phys(page) + offset;
+
+ dma_sync_single_for_device(dev, handle, size, dir);
+ return handle;
+}
+EXPORT_SYMBOL(dma_map_page);
+
+int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction dir)
+{
+ int i;
+
+ for (i = 0; i < nents; sg++, i++) {
+ sg->dma_address = sg_phys(sg);
+ dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir);
+ }
+ return nents;
+}
+EXPORT_SYMBOL(dma_map_sg);
diff --git a/arch/m68k/kernel/dma_mm.c b/arch/m68k/kernel/dma_mm.c
deleted file mode 100644
index a3c471b523f2..000000000000
--- a/arch/m68k/kernel/dma_mm.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- * 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.
- */
-
-#undef DEBUG
-
-#include <linux/dma-mapping.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/export.h>
-
-#include <asm/pgalloc.h>
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *handle, gfp_t flag)
-{
- struct page *page, **map;
- pgprot_t pgprot;
- void *addr;
- int i, order;
-
- pr_debug("dma_alloc_coherent: %d,%x\n", size, flag);
-
- size = PAGE_ALIGN(size);
- order = get_order(size);
-
- page = alloc_pages(flag, order);
- if (!page)
- return NULL;
-
- *handle = page_to_phys(page);
- map = kmalloc(sizeof(struct page *) << order, flag & ~__GFP_DMA);
- if (!map) {
- __free_pages(page, order);
- return NULL;
- }
- split_page(page, order);
-
- order = 1 << order;
- size >>= PAGE_SHIFT;
- map[0] = page;
- for (i = 1; i < size; i++)
- map[i] = page + i;
- for (; i < order; i++)
- __free_page(page + i);
- pgprot = __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY);
- if (CPU_IS_040_OR_060)
- pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S;
- else
- pgprot_val(pgprot) |= _PAGE_NOCACHE030;
- addr = vmap(map, size, VM_MAP, pgprot);
- kfree(map);
-
- return addr;
-}
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-void dma_free_coherent(struct device *dev, size_t size,
- void *addr, dma_addr_t handle)
-{
- pr_debug("dma_free_coherent: %p, %x\n", addr, handle);
- vfree(addr);
-}
-EXPORT_SYMBOL(dma_free_coherent);
-
-void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir)
-{
- switch (dir) {
- case DMA_TO_DEVICE:
- cache_push(handle, size);
- break;
- case DMA_FROM_DEVICE:
- cache_clear(handle, size);
- break;
- default:
- if (printk_ratelimit())
- printk("dma_sync_single_for_device: unsupported dir %u\n", dir);
- break;
- }
-}
-EXPORT_SYMBOL(dma_sync_single_for_device);
-
-void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir)
-{
- int i;
-
- for (i = 0; i < nents; sg++, i++)
- dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir);
-}
-EXPORT_SYMBOL(dma_sync_sg_for_device);
-
-dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size,
- enum dma_data_direction dir)
-{
- dma_addr_t handle = virt_to_bus(addr);
-
- dma_sync_single_for_device(dev, handle, size, dir);
- return handle;
-}
-EXPORT_SYMBOL(dma_map_single);
-
-dma_addr_t dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction dir)
-{
- dma_addr_t handle = page_to_phys(page) + offset;
-
- dma_sync_single_for_device(dev, handle, size, dir);
- return handle;
-}
-EXPORT_SYMBOL(dma_map_page);
-
-int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
- enum dma_data_direction dir)
-{
- int i;
-
- for (i = 0; i < nents; sg++, i++) {
- sg->dma_address = sg_phys(sg);
- dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir);
- }
- return nents;
-}
-EXPORT_SYMBOL(dma_map_sg);
diff --git a/arch/m68k/kernel/dma_no.c b/arch/m68k/kernel/dma_no.c
deleted file mode 100644
index f1dc3fc71bc2..000000000000
--- a/arch/m68k/kernel/dma_no.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Dynamic DMA mapping support.
- *
- * We never have any address translations to worry about, so this
- * is just alloc/free.
- */
-
-#include <linux/types.h>
-#include <linux/gfp.h>
-#include <linux/mm.h>
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-#include <linux/export.h>
-#include <asm/cacheflush.h>
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp)
-{
- void *ret;
- /* ignore region specifiers */
- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-
- if (dev == NULL || (*dev->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;
-}
-
-void dma_free_coherent(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_handle)
-{
- free_pages((unsigned long)vaddr, get_order(size));
-}
-
-void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir)
-{
- switch (dir) {
- case DMA_TO_DEVICE:
- flush_dcache_range(handle, size);
- break;
- case DMA_FROM_DEVICE:
- /* Should be clear already */
- break;
- default:
- if (printk_ratelimit())
- printk("dma_sync_single_for_device: unsupported dir %u\n", dir);
- break;
- }
-}
-
-EXPORT_SYMBOL(dma_sync_single_for_device);
-dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size,
- enum dma_data_direction dir)
-{
- dma_addr_t handle = virt_to_phys(addr);
- flush_dcache_range(handle, size);
- return handle;
-}
-EXPORT_SYMBOL(dma_map_single);
-
-dma_addr_t dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction dir)
-{
- dma_addr_t handle = page_to_phys(page) + offset;
- dma_sync_single_for_device(dev, handle, size, dir);
- return handle;
-}
-EXPORT_SYMBOL(dma_map_page);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 07:28:11 +0000