^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2006-2008 Nokia Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Test OOB read and write on MTD device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/div64.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/mtd/mtd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "mtd_test.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int dev = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static int bitflip_limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) module_param(dev, int, S_IRUGO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) MODULE_PARM_DESC(dev, "MTD device number to use");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) module_param(bitflip_limit, int, S_IRUGO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) MODULE_PARM_DESC(bitflip_limit, "Max. allowed bitflips per page");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static struct mtd_info *mtd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static unsigned char *readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static unsigned char *writebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static unsigned char *bbt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static int ebcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static int pgcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int errcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static int use_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static int use_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static int use_len_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static int vary_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static struct rnd_state rnd_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static void do_vary_offset(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) use_len -= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (use_len < 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) use_offset += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (use_offset >= use_len_max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) use_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) use_len = use_len_max - use_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static int write_eraseblock(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct mtd_oob_ops ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) prandom_bytes_state(&rnd_state, writebuf, use_len_max * pgcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) ops.ooblen = use_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) ops.ooboffs = use_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) ops.oobbuf = writebuf + (use_len_max * i) + use_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) err = mtd_write_oob(mtd, addr, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (err || ops.oobretlen != use_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) pr_err("error: writeoob failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) pr_err("error: use_len %d, use_offset %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) use_len, use_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (vary_offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) do_vary_offset();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static int write_whole_device(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) pr_info("writing OOBs of whole device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) err = write_eraseblock(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) pr_info("written up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) pr_info("written %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * Display the address, offset and data bytes at comparison failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * Return number of bitflips encountered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static size_t memcmpshowoffset(loff_t addr, loff_t offset, const void *cs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) const void *ct, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) const unsigned char *su1, *su2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) size_t i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) size_t bitflips = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) for (su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--, i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) res = *su1 ^ *su2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) pr_info("error @addr[0x%lx:0x%lx] 0x%x -> 0x%x diff 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) (unsigned long)addr, (unsigned long)offset + i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) *su1, *su2, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) bitflips += hweight8(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return bitflips;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #define memcmpshow(addr, cs, ct, count) memcmpshowoffset((addr), 0, (cs), (ct),\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) (count))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * Compare with 0xff and show the address, offset and data bytes at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * comparison failure. Return number of bitflips encountered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static size_t memffshow(loff_t addr, loff_t offset, const void *cs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) const unsigned char *su1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) size_t i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) size_t bitflips = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) for (su1 = cs; 0 < count; ++su1, count--, i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) res = *su1 ^ 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) pr_info("error @addr[0x%lx:0x%lx] 0x%x -> 0xff diff 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) (unsigned long)addr, (unsigned long)offset + i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) *su1, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) bitflips += hweight8(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return bitflips;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static int verify_eraseblock(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct mtd_oob_ops ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) size_t bitflips;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) prandom_bytes_state(&rnd_state, writebuf, use_len_max * pgcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) ops.ooblen = use_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) ops.ooboffs = use_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) ops.oobbuf = readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) err = mtd_read_oob(mtd, addr, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (mtd_is_bitflip(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (err || ops.oobretlen != use_len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) pr_err("error: readoob failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) bitflips = memcmpshow(addr, readbuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) writebuf + (use_len_max * i) + use_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) use_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (bitflips > bitflip_limit) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) pr_err("error: verify failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (errcnt > 1000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) pr_err("error: too many errors\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) } else if (bitflips) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) pr_info("ignoring error as within bitflip_limit\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (use_offset != 0 || use_len < mtd->oobavail) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) int k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) ops.ooblen = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) ops.ooboffs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) ops.oobbuf = readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) err = mtd_read_oob(mtd, addr, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) if (mtd_is_bitflip(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (err || ops.oobretlen != mtd->oobavail) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) pr_err("error: readoob failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) bitflips = memcmpshowoffset(addr, use_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) readbuf + use_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) writebuf + (use_len_max * i) + use_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) use_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) /* verify pre-offset area for 0xff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) bitflips += memffshow(addr, 0, readbuf, use_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) /* verify post-(use_offset + use_len) area for 0xff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) k = use_offset + use_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) bitflips += memffshow(addr, k, readbuf + k,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) mtd->oobavail - k);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (bitflips > bitflip_limit) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) pr_err("error: verify failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (errcnt > 1000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) pr_err("error: too many errors\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) } else if (bitflips) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) pr_info("ignoring errors as within bitflip limit\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (vary_offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) do_vary_offset();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static int verify_eraseblock_in_one_go(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct mtd_oob_ops ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) size_t len = mtd->oobavail * pgcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) size_t oobavail = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) size_t bitflips;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) prandom_bytes_state(&rnd_state, writebuf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) ops.ooblen = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) ops.ooboffs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) ops.oobbuf = readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /* read entire block's OOB at one go */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) err = mtd_read_oob(mtd, addr, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (mtd_is_bitflip(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (err || ops.oobretlen != len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) pr_err("error: readoob failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) /* verify one page OOB at a time for bitflip per page limit check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) bitflips = memcmpshow(addr, readbuf + (i * oobavail),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) writebuf + (i * oobavail), oobavail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (bitflips > bitflip_limit) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) pr_err("error: verify failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (errcnt > 1000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) pr_err("error: too many errors\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) } else if (bitflips) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) pr_info("ignoring error as within bitflip_limit\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) static int verify_all_eraseblocks(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) pr_info("verifying all eraseblocks\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) err = verify_eraseblock(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) pr_info("verified up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) pr_info("verified %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static int __init mtd_oobtest_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) uint64_t tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) struct mtd_oob_ops ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) loff_t addr = 0, addr0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) printk(KERN_INFO "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) printk(KERN_INFO "=================================================\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (dev < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) pr_info("Please specify a valid mtd-device via module parameter\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) pr_info("MTD device: %d\n", dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) mtd = get_mtd_device(NULL, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (IS_ERR(mtd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) err = PTR_ERR(mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) pr_err("error: cannot get MTD device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (!mtd_type_is_nand(mtd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) pr_info("this test requires NAND flash\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) tmp = mtd->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) do_div(tmp, mtd->erasesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) ebcnt = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) pgcnt = mtd->erasesize / mtd->writesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) pr_info("MTD device size %llu, eraseblock size %u, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) "page size %u, count of eraseblocks %u, pages per "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) "eraseblock %u, OOB size %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) (unsigned long long)mtd->size, mtd->erasesize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) mtd->writesize, ebcnt, pgcnt, mtd->oobsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) readbuf = kmalloc(mtd->erasesize, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) if (!readbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) writebuf = kmalloc(mtd->erasesize, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (!writebuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) bbt = kzalloc(ebcnt, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (!bbt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) use_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) use_len = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) use_len_max = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) vary_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) /* First test: write all OOB, read it back and verify */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) pr_info("test 1 of 5\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) prandom_seed_state(&rnd_state, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) err = write_whole_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) prandom_seed_state(&rnd_state, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) err = verify_all_eraseblocks();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) * Second test: write all OOB, a block at a time, read it back and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * verify.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) pr_info("test 2 of 5\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) prandom_seed_state(&rnd_state, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) err = write_whole_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) /* Check all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) prandom_seed_state(&rnd_state, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) pr_info("verifying all eraseblocks\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) err = verify_eraseblock_in_one_go(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) pr_info("verified up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) pr_info("verified %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) * Third test: write OOB at varying offsets and lengths, read it back
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) * and verify.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) pr_info("test 3 of 5\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) /* Write all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) use_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) use_len = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) use_len_max = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) vary_offset = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) prandom_seed_state(&rnd_state, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) err = write_whole_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) /* Check all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) use_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) use_len = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) use_len_max = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) vary_offset = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) prandom_seed_state(&rnd_state, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) err = verify_all_eraseblocks();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) use_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) use_len = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) use_len_max = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) vary_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /* Fourth test: try to write off end of device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) pr_info("test 4 of 5\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) addr0 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) for (i = 0; i < ebcnt && bbt[i]; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) addr0 += mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) /* Attempt to write off end of OOB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) ops.ooblen = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) ops.ooboffs = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) ops.oobbuf = writebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) pr_info("attempting to start write past end of OOB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) pr_info("an error is expected...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) err = mtd_write_oob(mtd, addr0, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) pr_info("error occurred as expected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) pr_err("error: can write past end of OOB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /* Attempt to read off end of OOB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) ops.ooblen = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) ops.ooboffs = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) ops.oobbuf = readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) pr_info("attempting to start read past end of OOB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) pr_info("an error is expected...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) err = mtd_read_oob(mtd, addr0, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) if (mtd_is_bitflip(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) pr_info("error occurred as expected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) pr_err("error: can read past end of OOB\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) if (bbt[ebcnt - 1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) pr_info("skipping end of device tests because last "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) "block is bad\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) /* Attempt to write off end of device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) ops.ooblen = mtd->oobavail + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) ops.ooboffs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) ops.oobbuf = writebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) pr_info("attempting to write past end of device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) pr_info("an error is expected...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) err = mtd_write_oob(mtd, mtd->size - mtd->writesize, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) pr_info("error occurred as expected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) pr_err("error: wrote past end of device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) /* Attempt to read off end of device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) ops.ooblen = mtd->oobavail + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) ops.ooboffs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) ops.oobbuf = readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) pr_info("attempting to read past end of device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) pr_info("an error is expected...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) err = mtd_read_oob(mtd, mtd->size - mtd->writesize, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (mtd_is_bitflip(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) pr_info("error occurred as expected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) pr_err("error: read past end of device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) err = mtdtest_erase_eraseblock(mtd, ebcnt - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) /* Attempt to write off end of device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) ops.ooblen = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) ops.ooboffs = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) ops.oobbuf = writebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) pr_info("attempting to write past end of device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) pr_info("an error is expected...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) err = mtd_write_oob(mtd, mtd->size - mtd->writesize, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) pr_info("error occurred as expected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) pr_err("error: wrote past end of device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) /* Attempt to read off end of device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) ops.ooblen = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) ops.ooboffs = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) ops.oobbuf = readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) pr_info("attempting to read past end of device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) pr_info("an error is expected...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) err = mtd_read_oob(mtd, mtd->size - mtd->writesize, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) if (mtd_is_bitflip(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) pr_info("error occurred as expected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) pr_err("error: read past end of device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) /* Fifth test: write / read across block boundaries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) pr_info("test 5 of 5\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) /* Erase all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) /* Write all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) prandom_seed_state(&rnd_state, 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) pr_info("writing OOBs of whole device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) for (i = 0; i < ebcnt - 1; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) int cnt = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) int pg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) size_t sz = mtd->oobavail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) if (bbt[i] || bbt[i + 1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) addr = (loff_t)(i + 1) * mtd->erasesize - mtd->writesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) prandom_bytes_state(&rnd_state, writebuf, sz * cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) for (pg = 0; pg < cnt; ++pg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) ops.ooblen = sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) ops.ooboffs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) ops.oobbuf = writebuf + pg * sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) err = mtd_write_oob(mtd, addr, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) pr_info("written up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) addr += mtd->writesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) pr_info("written %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) /* Check all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) prandom_seed_state(&rnd_state, 11);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) pr_info("verifying all eraseblocks\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) for (i = 0; i < ebcnt - 1; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) if (bbt[i] || bbt[i + 1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) prandom_bytes_state(&rnd_state, writebuf, mtd->oobavail * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) addr = (loff_t)(i + 1) * mtd->erasesize - mtd->writesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) ops.mode = MTD_OPS_AUTO_OOB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) ops.len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) ops.retlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) ops.ooblen = mtd->oobavail * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) ops.oobretlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) ops.ooboffs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) ops.datbuf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) ops.oobbuf = readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) err = mtd_read_oob(mtd, addr, &ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (mtd_is_bitflip(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) if (memcmpshow(addr, readbuf, writebuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) mtd->oobavail * 2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) pr_err("error: verify failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (errcnt > 1000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) pr_err("error: too many errors\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) pr_info("verified up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) pr_info("verified %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) pr_info("finished with %d errors\n", errcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) kfree(bbt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) kfree(writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) kfree(readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) put_mtd_device(mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) pr_info("error %d occurred\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) printk(KERN_INFO "=================================================\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) module_init(mtd_oobtest_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) static void __exit mtd_oobtest_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) module_exit(mtd_oobtest_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) MODULE_DESCRIPTION("Out-of-band test module");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) MODULE_AUTHOR("Adrian Hunter");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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