flashbench: add try_open_au_oob
This function is needed for certain USB sticks that
use an odd erase block size (4128 KiB in one case).
We will probably need this later, commit it as unused
for now.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/flashbench.c b/flashbench.c
index cc5e567..9d04a23 100644
--- a/flashbench.c
+++ b/flashbench.c
@@ -466,6 +466,46 @@
return 0;
}
+static int try_open_au_oob(struct device *dev, unsigned int erasesize,
+ unsigned int blocksize,
+ unsigned int count,
+ bool random)
+{
+ /* find maximum number of open AUs */
+ struct operation program[] = {
+ /* loop through power of two multiple of one sector */
+ {O_LEN_POW2, find_order(erasesize, blocksize), -(long long)blocksize},
+ {O_SEQUENCE, 4},
+ /* print block size */
+ {O_DROP},
+ {O_PRINTF},
+ {O_FORMAT},
+ {O_LENGTH},
+ /* start 16 MB into the device, to skip FAT */
+ {O_OFF_FIXED, .val = 4 * 1024 * 4128}, {O_DROP},
+ /* print one line of aggregated
+ per second results */
+ {O_PRINTF}, {O_FORMAT}, {O_BPS},
+ /* linear write 0x5a */
+ {O_REDUCE, .aggregate = A_MAXIMUM}, {O_REPEAT, 1},
+ {O_REDUCE, .aggregate = A_AVERAGE},
+ { (random ? O_OFF_RAND : O_OFF_LIN),
+ erasesize / blocksize, -1},
+ {O_REDUCE, .aggregate = A_AVERAGE}, // {O_BPS},
+ {O_OFF_RAND, count, /* 2 * erasesize */ 2 * 4128 * 1024}, {O_WRITE_RAND},
+ {O_DROP},
+ {O_OFF_FIXED, .val = 4 * 1024 * 4128 + 4 * 1024 * 1024}, {O_DROP},
+ {O_LEN_FIXED, .val = 32 * 1024},
+ {O_OFF_RAND, count, 2 * 4128 * 1024}, {O_WRITE_RAND},
+ {O_NEWLINE},
+ {O_END},
+ {O_END},
+ };
+ call(program, dev, 0, erasesize, 0);
+
+ return 0;
+}
+
static int try_open_au(struct device *dev, unsigned int erasesize,
unsigned int blocksize,
unsigned int count,
