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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-09 12:19:52 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-03-05 15:11:12 +0100 |
| commit | f2f45e5f3c921c73c913e9a9c00f21ec01c86b4d (patch) | |
| tree | 36a481a95e8e412e1453fb4b4843333725400ab3 /lib | |
| parent | 5ee00bd4691e7364bb7b62e2068d473cd5cb9320 (diff) | |
| download | lwn-f2f45e5f3c921c73c913e9a9c00f21ec01c86b4d.tar.gz lwn-f2f45e5f3c921c73c913e9a9c00f21ec01c86b4d.zip | |
dma-debug: add header file and core data structures
Impact: add groundwork for DMA-API debugging
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Makefile | 2 | ||||
| -rw-r--r-- | lib/dma-debug.c | 42 |
2 files changed, 44 insertions, 0 deletions
diff --git a/lib/Makefile b/lib/Makefile index 32b0e64ded27..50b48cf63e4a 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -84,6 +84,8 @@ obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o obj-$(CONFIG_DYNAMIC_PRINTK_DEBUG) += dynamic_printk.o +obj-$(CONFIG_DMA_API_DEBUG) += dma-debug.o + hostprogs-y := gen_crc32table clean-files := crc32table.h diff --git a/lib/dma-debug.c b/lib/dma-debug.c new file mode 100644 index 000000000000..31099712328c --- /dev/null +++ b/lib/dma-debug.c @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * + * Author: Joerg Roedel <joerg.roedel@amd.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/dma-debug.h> +#include <linux/types.h> +#include <linux/list.h> + +enum { + dma_debug_single, + dma_debug_page, + dma_debug_sg, + dma_debug_coherent, +}; + +struct dma_debug_entry { + struct list_head list; + struct device *dev; + int type; + phys_addr_t paddr; + u64 dev_addr; + u64 size; + int direction; + int sg_call_ents; + int sg_mapped_ents; +}; + |