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Do some housekeeping with fat.h and SECTOR_SIZE

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Many includes of fat.h are pointless. Some includes are just for
SECTOR_SIZE. Add a file 'firmware/include/fs_defines.h' for that
and to define tuneable values that were scattered amongst various
headers.

Remove some local definitions of SECTOR_SIZE since they have to be
in agreement with the rest of the fs code anyway.

(We'll see what's in fact pointless in a moment ;)

Change-Id: I9ba183bf58bd87f5c45eba7bd675c7e2c1c18ed5
This commit is contained in:
Michael Sevakis 2017-03-12 22:05:44 -04:00
parent 70c929179b
commit 6db80020b4
29 changed files with 118 additions and 105 deletions
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23
firmware/include/disk_cache.h
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@ -21,29 +21,6 @@
#ifndef DISK_CACHE_H
#define DISK_CACHE_H
/* This needs enough for all file handles to have a buffer in the worst case
* plus at least one reserved exclusively for the cache client and a couple
* for other file system code. The buffers are put to use by the cache if not
* taken for another purpose (meaning nothing is wasted sitting fallow).
*
* One map per volume is maintained in order to avoid collisions between
* volumes that would slow cache probing. DC_MAP_NUM_ENTRIES is the number
* for each map per volume. The buffers themselves are shared.
*/
#if MEMORYSIZE < 8
#define DC_NUM_ENTRIES 32
#define DC_MAP_NUM_ENTRIES 128
#elif MEMORYSIZE <= 32
#define DC_NUM_ENTRIES 48
#define DC_MAP_NUM_ENTRIES 128
#else /* MEMORYSIZE > 32 */
#define DC_NUM_ENTRIES 64
#define DC_MAP_NUM_ENTRIES 256
#endif /* MEMORYSIZE */
/* this _could_ be larger than a sector if that would ever be useful */
#define DC_CACHE_BUFSIZE SECTOR_SIZE
#include "mutex.h"
#include "mv.h"