| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 22 Feb 2007 19:59:45 -0500
From: "John W. Linville" <linville@...driver.com>
To: linux-kernel@...r.kernel.org, James.Bottomley@...elEye.com
Cc: Tejun Heo <htejun@...il.com>, Jeff Garzik <jeff@...zik.org>,
Martin Schwidefsky <schwidefsky@...ibm.com>,
Heiko Carstens <heiko.carstens@...ibm.com>
Subject: [PATCH] dma-mapping-broken.h: flesh-out DMA API stubs
This allows some drivers compile on arches that don't support DMA
(e.g. s390).
Signed-off-by: John W. Linville <linville@...driver.com>
---
Is there any reason why this header should not cover the whole DMA API?
Compile-tested only...
include/asm-generic/dma-mapping-broken.h | 134 ++++++++++++++++++++++++++++++
1 files changed, 134 insertions(+), 0 deletions(-)
diff --git a/include/asm-generic/dma-mapping-broken.h b/include/asm-generic/dma-mapping-broken.h
index 29413d3..84812dd 100644
--- a/include/asm-generic/dma-mapping-broken.h
+++ b/include/asm-generic/dma-mapping-broken.h
@@ -21,4 +21,116 @@ dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
#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)
+static inline dma_addr_t
+dma_map_single(struct device *dev, void *ptr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+ return (dma_addr_t)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 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 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 (dma_addr_t)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 void
+dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+#define dma_sync_single_for_device dma_sync_single_for_cpu
+#define dma_sync_single_range_for_device dma_sync_single_range_for_cpu
+#define dma_sync_sg_for_device dma_sync_sg_for_cpu
+
+static inline int
+dma_mapping_error(dma_addr_t dma_addr)
+{
+ BUG();
+ return 1;
+}
+
+static inline int
+dma_supported(struct device *dev, u64 mask)
+{
+ return 0;
+}
+
+static inline int
+dma_set_mask(struct device *dev, u64 mask)
+{
+ BUG();
+ return -EIO;
+}
+
+static inline int
+dma_get_cache_alignment(void)
+{
+ BUG();
+ return 0;
+}
+
+int
+dma_is_consistent(struct device *dev, dma_addr_t dma_handle)
+{
+ BUG();
+ return 0;
+}
+
+static inline void
+dma_cache_sync(struct device *dev, void *vaddr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
#endif /* _ASM_GENERIC_DMA_MAPPING_H */
--
1.4.4.2
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists