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SubjectRe: dmapool (was: Re: Linux 2.6.3-rc2)
On Thu, 12 Feb 2004, Gerd Knorr wrote:
> Geert Uytterhoeven <geert@linux-m68k.org> writes:
> > Feel free to move the stubs to asm-generic/no-dma-mapping.h, if there are
> > enough users to warrant that.
>
> Yes, please. user-mode-linux needs this too.

So here's a new patch:

--- /dev/null 2004-02-08 10:50:36.000000000 +0100
+++ linux-m68k-2.6.3-rc2/include/asm-generic/dma-mapping-broken.h 2004-02-13 16:17:05.000000000 +0100
@@ -0,0 +1,121 @@
+#ifndef _ASM_GENERIC_DMA_MAPPING_H
+#define _ASM_GENERIC_DMA_MAPPING_H
+
+/* This is used for archs that do not support DMA */
+
+
+static inline int
+dma_supported(struct device *dev, u64 mask)
+{
+ BUG();
+ return 0;
+}
+
+static inline int
+dma_set_mask(struct device *dev, u64 dma_mask)
+{
+ BUG();
+ return 0;
+}
+
+static inline void *
+dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
+ int flag)
+{
+ BUG();
+ return 0;
+}
+
+static inline void
+dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
+ dma_addr_t dma_handle)
+{
+ BUG();
+}
+
+static inline dma_addr_t
+dma_map_single(struct device *dev, void *cpu_addr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+ return 0;
+}
+
+static inline void
+dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline dma_addr_t
+dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+ return 0;
+}
+
+static inline void
+dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline int
+dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction direction)
+{
+ BUG();
+ return 0;
+}
+
+static inline void
+dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_single(struct device *dev, dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_sg(struct device *dev, struct scatterlist *sg, int nelems,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+#define dma_is_consistent(d) (1)
+
+static inline int
+dma_get_cache_alignment(void)
+{
+ BUG();
+ return 0;
+}
+
+static inline void
+dma_sync_single_range(struct device *dev, dma_addr_t dma_handle,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_cache_sync(void *vaddr, size_t size, enum dma_data_direction direction)
+{
+ BUG();
+}
+
+#endif /* _ASM_GENERIC_DMA_MAPPING_H */
--- linux-2.6.3-rc2/include/asm-m68k/dma-mapping.h 2003-07-29 18:19:20.000000000 +0200
+++ linux-m68k-2.6.3-rc2/include/asm-m68k/dma-mapping.h 2004-02-13 16:14:30.000000000 +0100
@@ -5,6 +5,8 @@

#ifdef CONFIG_PCI
#include <asm-generic/dma-mapping.h>
+#else
+#include <asm-generic/dma-mapping-broken.h>
#endif

#endif /* _M68K_DMA_MAPPING_H */
Gr{oetje,eeting}s,
Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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