Add SDK modifications by BassAceGold as of 2011-04-14, as well as modified DMA functions as of 2013-01-29.

1 files changed, 64 insertions, 0 deletions

diff --git a/sdk-modifications/include/file_allocation_table.h b/sdk-modifications/include/file_allocation_table.h
new file mode 100644
index 0000000..4fb4149
--- /dev/null
+++ b/sdk-modifications/include/file_allocation_table.h
@@ -0,0 +1,64 @@
+/*
+ file_allocation_table.h
+ Reading, writing and manipulation of the FAT structure on
+ a FAT partition
+
+ Copyright (c) 2006 Michael "Chishm" Chisholm
+	
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+  1. Redistributions of source code must retain the above copyright notice,
+     this list of conditions and the following disclaimer.
+  2. Redistributions in binary form must reproduce the above copyright notice,
+     this list of conditions and the following disclaimer in the documentation and/or
+     other materials provided with the distribution.
+  3. The name of the author may not be used to endorse or promote products derived
+     from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+	2006-07-11 - Chishm
+		* Original release
+
+	2006-10-01 - Chishm
+		* Added _FAT_fat_linkFreeClusterCleared to clear a cluster when it is allocated
+*/
+
+#ifndef _FAT_H
+#define _FAT_H
+
+#include "fs_common.h"
+#include "partition.h"
+
+#define CLUSTER_EOF_16	0xFFFF
+#define	CLUSTER_EOF	0x0FFFFFFF
+#define CLUSTER_FREE	0x0000
+#define CLUSTER_FIRST	0x0002
+
+#define CLUSTERS_PER_FAT12 4085
+#define CLUSTERS_PER_FAT16 65525
+
+
+u32 _FAT_fat_nextCluster(PARTITION* partition, u32 cluster);
+
+u32 _FAT_fat_linkFreeCluster(PARTITION* partition, u32 cluster);
+u32 _FAT_fat_linkFreeClusterCleared (PARTITION* partition, u32 cluster);
+
+bool _FAT_fat_clearLinks (PARTITION* partition, u32 cluster);
+
+u32 _FAT_fat_lastCluster (PARTITION* partition, u32 cluster);
+
+static inline u32 _FAT_fat_clusterToSector (PARTITION* partition, u32 cluster) {
+	return (cluster >= 2) ? ((cluster - 2) * partition->sectorsPerCluster) + partition->dataStart : partition->rootDirStart;
+}
+
+#endif // _FAT_H