Christopher Haster
b1d8114889
Having BENCH/TEST_NAND ifdefs that enable the relevant timings, but _not_ the relevant geometry, is certainly a choice. Defaulting to NAND geometry when BENCH/TEST_NAND is defined is more useful, if only for minimizing confusion.
202 lines
9.1 KiB
C
202 lines
9.1 KiB
C
// littlefs bench runner defines
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// preconfigured defines that control how benches run
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#ifdef BENCH_DEFINE
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// name value (overridable)
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#ifndef BENCH_NAND
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// NOR flash geometry
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BENCH_DEFINE(READ_SIZE, 1 )
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BENCH_DEFINE(PROG_SIZE, 1 )
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BENCH_DEFINE(BLOCK_SIZE, 4096 )
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#else
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// NAND flash geometry
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BENCH_DEFINE(READ_SIZE, 1 )
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BENCH_DEFINE(PROG_SIZE, 512 )
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BENCH_DEFINE(BLOCK_SIZE, 131072 )
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#endif
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BENCH_DEFINE(BLOCK_COUNT, DISK_SIZE/BLOCK_SIZE )
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BENCH_DEFINE(DISK_SIZE, 1024*1024 )
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BENCH_DEFINE(BLOCK_RECYCLES, -1 )
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BENCH_DEFINE(RCACHE_SIZE, LFS3_MAX(16, READ_SIZE) )
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BENCH_DEFINE(PCACHE_SIZE, LFS3_MAX(16, PROG_SIZE) )
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BENCH_DEFINE(FCACHE_SIZE, 16 )
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BENCH_DEFINE(LOOKAHEAD_SIZE, 16 )
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BENCH_DEFINE(GC_FLAGS, LFS3_GC_GC )
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BENCH_DEFINE(GC_STEPS, 0 )
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BENCH_DEFINE(GC_LOOKAHEAD_THRESH, -1 )
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BENCH_DEFINE(GC_LOOKGBMAP_THRESH, -1 )
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BENCH_DEFINE(GC_PREERASE_COUNT, -1 )
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BENCH_DEFINE(GC_COMPACT_THRESH, 0 )
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BENCH_DEFINE(SHRUB_SIZE, BLOCK_SIZE/4 )
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BENCH_DEFINE(FRAGMENT_SIZE, LFS3_MIN(BLOCK_SIZE/8, 512) )
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BENCH_DEFINE(CRYSTAL_THRESH, BLOCK_SIZE/8 )
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BENCH_DEFINE(LOOKGBMAP_THRESH, BLOCK_COUNT/4 )
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BENCH_DEFINE(ERASE_VALUE, 0xff )
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#ifndef BENCH_NAND
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// NOR flash timings
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//
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// based on w25q64jv:
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// https://www.winbond.com/resource-files/
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// W25Q64JV%20RevM%2012242024%20Plus.pdf
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//
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// note one thing unique to NOR flash is the extreme erase cost
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//
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// FR=104 MHz, quad prog (9.6 ns * 8/4)
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// => +~19 ns for bus (not read!)
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//
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// simple:
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// readed=40ns/B fR=50 MHz, quad read (20 ns * 8/4)
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// progged=1582ns/B tPP=0.4 ms, page=256 (0.4 ms / 256 + bus)
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// erased=10986ns/B tSE=45 ms, sector=4096 (45 ms / 4096)
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//
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// less-simple:
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// reads=0ns (no transaction cost)
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// progs=400000ns tPP=0.4 ms, page=256
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// erases=0ns (no transaction cost)
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// readed=40ns/B fR=50 MHz, quad read (20 ns * 8/4)
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// progged=1484ns/B tPP=0.4 ms (((4096/256)*0.4ms - 0.4ms)/4096 + bus)
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// erased=10986ns/B tSE=45 ms, sector=4096 (45 ms / 4096)
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//
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// note we always treat erases as per-byte to simplify benchmarking
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// across different block sizes
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//
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#ifdef BENCH_SIMPLE
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BENCH_DEFINE(READS_TIMING, 0 )
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BENCH_DEFINE(PROGS_TIMING, 0 )
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BENCH_DEFINE(ERASES_TIMING, 0 )
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BENCH_DEFINE(READED_TIMING, 40 )
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BENCH_DEFINE(PROGGED_TIMING, 1582 )
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BENCH_DEFINE(ERASED_TIMING, 10986 )
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#else
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BENCH_DEFINE(READS_TIMING, 0 )
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BENCH_DEFINE(PROGS_TIMING, 400000 )
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BENCH_DEFINE(ERASES_TIMING, 0 )
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BENCH_DEFINE(READED_TIMING, 40 )
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BENCH_DEFINE(PROGGED_TIMING, 1484 )
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BENCH_DEFINE(ERASED_TIMING, 10986 )
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#endif
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#else
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// NAND flash timings
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//
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// based on w25n01gv:
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// https://www.winbond.com/resource-files/W25N01GV%20Rev%20R%20070323.pdf
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//
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// FR=104 MHz, quad read/prog (9.6 ns * 8/4)
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// => +~19 ns for bus
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//
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// simple:
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// readed=31ns/B tRD1=25 us, p=2048, s=512 (25 us / 2048 + bus)
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// progged=141ns/B tPP=250 us, p=2048, s=512 (250 us / 2048 + bus)
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// erased=15ns/B tBE=2 ms, block=131072 (2 ms / 131072)
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//
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// less-simple:
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// reads=25000ns tRD1=25 us, p=2048, s=512
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// progs=250000ns tPP=250 us, p=2048, s=512
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// erases=0ns (no transaction cost)
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// readed=31ns/B tRD1=25 us (((131072/2048)*25us - 25us)/131072 + bus)
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// progged=139ns/B tPP=250 us (((131072/2048)*250us - 250us)/131072 + bus)
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// erased=15ns/B tBE=2 ms, block=131072 (2 ms / 131072)
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//
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// note we always treat erases as per-byte to simplify benchmarking
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// across different block sizes
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//
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#ifdef BENCH_SIMPLE
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BENCH_DEFINE(READS_TIMING, 0 )
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BENCH_DEFINE(PROGS_TIMING, 0 )
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BENCH_DEFINE(ERASES_TIMING, 0 )
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BENCH_DEFINE(READED_TIMING, 31 )
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BENCH_DEFINE(PROGGED_TIMING, 141 )
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BENCH_DEFINE(ERASED_TIMING, 15 )
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#else
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BENCH_DEFINE(READS_TIMING, 25000 )
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BENCH_DEFINE(PROGS_TIMING, 250000 )
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BENCH_DEFINE(ERASES_TIMING, 0 )
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BENCH_DEFINE(READED_TIMING, 31 )
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BENCH_DEFINE(PROGGED_TIMING, 139 )
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BENCH_DEFINE(ERASED_TIMING, 15 )
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#endif
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#endif
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#ifndef BENCH_KIWIBD
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BENCH_DEFINE(ERASE_CYCLES, 0 )
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BENCH_DEFINE(BADBLOCK_BEHAVIOR, LFS3_EMUBD_BADBLOCK_PROGERROR )
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BENCH_DEFINE(POWERLOSS_BEHAVIOR, LFS3_EMUBD_POWERLOSS_ATOMIC )
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BENCH_DEFINE(BD_SEED, 0 )
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#endif
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#endif
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// struct lfs3_cfg definition
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#ifdef BENCH_CFG
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struct lfs3_cfg _cfg = {
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#ifdef BENCH_CFG_CFG
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BENCH_CFG_CFG
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#endif
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.read_size = READ_SIZE,
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.prog_size = PROG_SIZE,
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.block_size = BLOCK_SIZE,
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.block_count = BLOCK_COUNT,
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.block_recycles = BLOCK_RECYCLES,
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.rcache_size = RCACHE_SIZE,
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.pcache_size = PCACHE_SIZE,
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.fcache_size = FCACHE_SIZE,
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.lookahead_size = LOOKAHEAD_SIZE,
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#ifdef LFS3_GBMAP
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.gc_lookgbmap_thresh = GC_LOOKGBMAP_THRESH,
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.lookgbmap_thresh = LOOKGBMAP_THRESH,
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#endif
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#ifdef LFS3_PREERASE
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.gc_preerase_count = GC_PREERASE_COUNT,
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#endif
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#ifdef LFS3_GC
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.gc_flags = GC_FLAGS,
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.gc_steps = GC_STEPS,
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#endif
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.gc_lookahead_thresh = GC_LOOKAHEAD_THRESH,
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.gc_compact_thresh = GC_COMPACT_THRESH,
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.shrub_size = SHRUB_SIZE,
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.fragment_size = FRAGMENT_SIZE,
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.crystal_thresh = CRYSTAL_THRESH,
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};
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struct lfs3_cfg *BENCH_CFG = &_cfg;
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#endif
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// struct lfs3_*bd_cfg definition
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#ifdef BENCH_BDCFG
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#ifndef BENCH_KIWIBD
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struct lfs3_emubd_cfg _bdcfg = {
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#ifdef BENCH_BDCFG_CFG
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BENCH_BDCFG_CFG
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#endif
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.erase_value = ERASE_VALUE,
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.reads_timing = READS_TIMING,
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.progs_timing = PROGS_TIMING,
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.erases_timing = ERASES_TIMING,
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.readed_timing = READED_TIMING,
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.progged_timing = PROGGED_TIMING,
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.erased_timing = ERASED_TIMING,
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.erase_cycles = ERASE_CYCLES,
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.badblock_behavior = BADBLOCK_BEHAVIOR,
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.powerloss_behavior = POWERLOSS_BEHAVIOR,
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.seed = BD_SEED,
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};
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struct lfs3_emubd_cfg *BENCH_BDCFG = &_bdcfg;
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#else
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struct lfs3_kiwibd_cfg _bdcfg = {
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#ifdef BENCH_BDCFG_CFG
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BENCH_BDCFG_CFG
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#endif
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.erase_value = ERASE_VALUE,
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.reads_timing = READS_TIMING,
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.progs_timing = PROGS_TIMING,
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.erases_timing = ERASES_TIMING,
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.readed_timing = READED_TIMING,
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.progged_timing = PROGGED_TIMING,
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.erased_timing = ERASED_TIMING,
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};
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struct lfs3_kiwibd_cfg *BENCH_BDCFG = &_bdcfg;
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#endif
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#endif
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