^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) 2006-2007 Nokia Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Test sub-page read and write on MTD device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mtd/mtd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "mtd_test.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static int dev = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) module_param(dev, int, S_IRUGO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) MODULE_PARM_DESC(dev, "MTD device number to use");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static struct mtd_info *mtd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static unsigned char *writebuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static unsigned char *readbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static unsigned char *bbt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static int subpgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static int bufsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static int ebcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int pgcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static int errcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static struct rnd_state rnd_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static inline void clear_data(unsigned char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) memset(buf, 0, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static int write_eraseblock(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) size_t written;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) prandom_bytes_state(&rnd_state, writebuf, subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) err = mtd_write(mtd, addr, subpgsize, &written, writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (unlikely(err || written != subpgsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) pr_err("error: write failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (written != subpgsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) pr_err(" write size: %#x\n", subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) pr_err(" written: %#zx\n", written);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) addr += subpgsize;
^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, subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) err = mtd_write(mtd, addr, subpgsize, &written, writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (unlikely(err || written != subpgsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) pr_err("error: write failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (written != subpgsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) pr_err(" write size: %#x\n", subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) pr_err(" written: %#zx\n", written);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static int write_eraseblock2(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) size_t written;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) int err = 0, k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) for (k = 1; k < 33; ++k) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (addr + (subpgsize * k) > (loff_t)(ebnum + 1) * mtd->erasesize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) prandom_bytes_state(&rnd_state, writebuf, subpgsize * k);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) err = mtd_write(mtd, addr, subpgsize * k, &written, writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (unlikely(err || written != subpgsize * k)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) pr_err("error: write failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (written != subpgsize * k) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) pr_err(" write size: %#x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) subpgsize * k);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) pr_err(" written: %#08zx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) written);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) addr += subpgsize * k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static void print_subpage(unsigned char *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) for (i = 0; i < subpgsize; ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) for (j = 0; i < subpgsize && j < 32; ++i, ++j)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) printk("%02x", *p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) printk("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static int verify_eraseblock(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) size_t read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) prandom_bytes_state(&rnd_state, writebuf, subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) clear_data(readbuf, subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) err = mtd_read(mtd, addr, subpgsize, &read, readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (unlikely(err || read != subpgsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (mtd_is_bitflip(err) && read == subpgsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) pr_info("ECC correction at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) pr_err("error: read failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return err ? err : -1;
^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) if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) pr_err("error: verify failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) pr_info("------------- written----------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) print_subpage(writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) pr_info("------------- read ------------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) print_subpage(readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) pr_info("-------------------------------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) addr += subpgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) prandom_bytes_state(&rnd_state, writebuf, subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) clear_data(readbuf, subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) err = mtd_read(mtd, addr, subpgsize, &read, readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (unlikely(err || read != subpgsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (mtd_is_bitflip(err) && read == subpgsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) pr_info("ECC correction at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) pr_err("error: read failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) pr_info("error: verify failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) pr_info("------------- written----------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) print_subpage(writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) pr_info("------------- read ------------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) print_subpage(readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) pr_info("-------------------------------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static int verify_eraseblock2(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) size_t read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) int err = 0, k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) for (k = 1; k < 33; ++k) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (addr + (subpgsize * k) > (loff_t)(ebnum + 1) * mtd->erasesize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) prandom_bytes_state(&rnd_state, writebuf, subpgsize * k);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) clear_data(readbuf, subpgsize * k);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) err = mtd_read(mtd, addr, subpgsize * k, &read, readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (unlikely(err || read != subpgsize * k)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (mtd_is_bitflip(err) && read == subpgsize * k) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) pr_info("ECC correction at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) pr_err("error: read failed at "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) "%#llx\n", (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (unlikely(memcmp(readbuf, writebuf, subpgsize * k))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) pr_err("error: verify failed at %#llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) addr += subpgsize * k;
^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) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static int verify_eraseblock_ff(int ebnum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) uint32_t j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) size_t read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) loff_t addr = (loff_t)ebnum * mtd->erasesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) memset(writebuf, 0xff, subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) for (j = 0; j < mtd->erasesize / subpgsize; ++j) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) clear_data(readbuf, subpgsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) err = mtd_read(mtd, addr, subpgsize, &read, readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (unlikely(err || read != subpgsize)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (mtd_is_bitflip(err) && read == subpgsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) pr_info("ECC correction 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) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) pr_err("error: read failed at "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) "%#llx\n", (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return err ? err : -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) pr_err("error: verify 0xff failed at "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) "%#llx\n", (long long)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) errcnt += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) addr += subpgsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) static int verify_all_eraseblocks_ff(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) pr_info("verifying all eraseblocks for 0xff\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) err = verify_eraseblock_ff(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) pr_info("verified up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) pr_info("verified %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) static int __init mtd_subpagetest_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) uint32_t i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) uint64_t tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) printk(KERN_INFO "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) printk(KERN_INFO "=================================================\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (dev < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) pr_info("Please specify a valid mtd-device via module parameter\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) pr_info("MTD device: %d\n", dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) mtd = get_mtd_device(NULL, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (IS_ERR(mtd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) err = PTR_ERR(mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) pr_err("error: cannot get MTD device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (!mtd_type_is_nand(mtd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) pr_info("this test requires NAND flash\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) subpgsize = mtd->writesize >> mtd->subpage_sft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) tmp = mtd->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) do_div(tmp, mtd->erasesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) ebcnt = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) pgcnt = mtd->erasesize / mtd->writesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) pr_info("MTD device size %llu, eraseblock size %u, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) "page size %u, subpage size %u, count of eraseblocks %u, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) "pages per eraseblock %u, OOB size %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) (unsigned long long)mtd->size, mtd->erasesize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) mtd->writesize, subpgsize, ebcnt, pgcnt, mtd->oobsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) bufsize = subpgsize * 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) writebuf = kmalloc(bufsize, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (!writebuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) readbuf = kmalloc(bufsize, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (!readbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) bbt = kzalloc(ebcnt, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (!bbt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) err = mtdtest_scan_for_bad_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) pr_info("writing whole device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) prandom_seed_state(&rnd_state, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) err = write_eraseblock(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) pr_info("written up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) pr_info("written %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) prandom_seed_state(&rnd_state, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) pr_info("verifying all eraseblocks\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) err = verify_eraseblock(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) pr_info("verified up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) pr_info("verified %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) err = verify_all_eraseblocks_ff();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) /* Write all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) prandom_seed_state(&rnd_state, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) pr_info("writing whole device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) err = write_eraseblock2(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) pr_info("written up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) err = mtdtest_relax();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) pr_info("written %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) /* Check all eraseblocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) prandom_seed_state(&rnd_state, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) pr_info("verifying all eraseblocks\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) for (i = 0; i < ebcnt; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (bbt[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) err = verify_eraseblock2(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) if (i % 256 == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) pr_info("verified up to eraseblock %u\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) err = mtdtest_relax();
^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) pr_info("verified %u eraseblocks\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) err = mtdtest_erase_good_eraseblocks(mtd, bbt, 0, ebcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) err = verify_all_eraseblocks_ff();
^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) pr_info("finished with %d errors\n", errcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) kfree(bbt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) kfree(readbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) kfree(writebuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) put_mtd_device(mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) pr_info("error %d occurred\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) printk(KERN_INFO "=================================================\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) module_init(mtd_subpagetest_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) static void __exit mtd_subpagetest_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) module_exit(mtd_subpagetest_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) MODULE_DESCRIPTION("Subpage test module");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) MODULE_AUTHOR("Adrian Hunter");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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