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authorJoerg Roedel <joerg.roedel@amd.com>2009-01-09 12:19:52 +0100
committerJoerg Roedel <joerg.roedel@amd.com>2009-03-05 15:11:12 +0100
commitf2f45e5f3c921c73c913e9a9c00f21ec01c86b4d (patch)
tree36a481a95e8e412e1453fb4b4843333725400ab3
parent5ee00bd4691e7364bb7b62e2068d473cd5cb9320 (diff)
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>
-rw-r--r--include/linux/dma-debug.h25
-rw-r--r--lib/Makefile2
-rw-r--r--lib/dma-debug.c42
3 files changed, 69 insertions, 0 deletions
diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
new file mode 100644
index 00000000000..ce4ace707c7
--- /dev/null
+++ b/include/linux/dma-debug.h
@@ -0,0 +1,25 @@
+/*
+ * 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
+ */
+
+#ifndef __DMA_DEBUG_H
+#define __DMA_DEBUG_H
+
+struct device;
+
+#endif /* __DMA_DEBUG_H */
diff --git a/lib/Makefile b/lib/Makefile
index 32b0e64ded2..50b48cf63e4 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 00000000000..31099712328
--- /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;
+};
+