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>

diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
new file mode 100644 (file)
index 0000000..ce4ace7
--- /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 32b0e64ded27d7c1f614fdc974d0857abfc19bbc..50b48cf63e4a5d7967e3b3d757b1a40afb7fba97 100644 (file)
--- 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 (file)
index 0000000..3109971
--- /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;
+};
+