static int write_eraseblock(int ebnum)
{
loff_t addr = (loff_t)ebnum * mtd->erasesize;
prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize);
cond_resched();
return mtdtest_write(mtd, addr, mtd->erasesize, writebuf);
}
static int write_eraseblock_by_2pages(int ebnum)
{
size_t sz = pgsize * 2;
int i, n = pgcnt / 2, err = 0;
loff_t addr = ebnum * mtd->erasesize;
void *buf = iobuf;
for (i = 0; i < n; i++) {
err = mtdtest_write(mtd, addr, sz, buf);
if (err)
return err;
addr += sz;
buf += sz;
}
if (pgcnt % 2)
err = mtdtest_write(mtd, addr, pgsize, buf);
return err;
}
static int erasetest(void)
{
int err = 0, i, ebnum, ok = 1;
loff_t addr0;
pr_info("erasetest\n");
ebnum = 0;
addr0 = 0;
for (i = 0; i < ebcnt && bbt[i]; ++i) {
addr0 += mtd->erasesize;
ebnum += 1;
}
pr_info("erasing block %d\n", ebnum);
err = mtdtest_erase_eraseblock(mtd, ebnum);
if (err)
return err;
pr_info("writing 1st page of block %d\n", ebnum);
prandom_bytes_state(&rnd_state, writebuf, pgsize);
err = mtdtest_write(mtd, addr0, pgsize, writebuf);
if (err)
return err;
pr_info("erasing block %d\n", ebnum);
err = mtdtest_erase_eraseblock(mtd, ebnum);
if (err)
return err;
pr_info("reading 1st page of block %d\n", ebnum);
err = mtdtest_read(mtd, addr0, pgsize, twopages);
if (err)
return err;
pr_info("verifying 1st page of block %d is all 0xff\n",
ebnum);
for (i = 0; i < pgsize; ++i)
if (twopages[i] != 0xff) {
pr_err("verifying all 0xff failed at %d\n",
i);
errcnt += 1;
ok = 0;
break;
}
if (ok && !err)
pr_info("erasetest ok\n");
return err;
}
static int write_eraseblock_by_page(int ebnum)
{
int i, err = 0;
loff_t addr = ebnum * mtd->erasesize;
void *buf = iobuf;
for (i = 0; i < pgcnt; i++) {
err = mtdtest_write(mtd, addr, pgsize, buf);
if (err)
break;
addr += pgsize;
buf += pgsize;
}
return err;
}
static int do_write(void)
{
int eb = rand_eb(), offs, err, len;
loff_t addr;
offs = offsets[eb];
if (offs >= mtd->erasesize) {
err = mtdtest_erase_eraseblock(mtd, eb);
if (err)
return err;
offs = offsets[eb] = 0;
}
len = rand_len(offs);
len = ((len + pgsize - 1) / pgsize) * pgsize;
if (offs + len > mtd->erasesize) {
if (bbt[eb + 1])
len = mtd->erasesize - offs;
else {
err = mtdtest_erase_eraseblock(mtd, eb + 1);
if (err)
return err;
offsets[eb + 1] = 0;
}
}
addr = (loff_t)eb * mtd->erasesize + offs;
err = mtdtest_write(mtd, addr, len, writebuf);
if (unlikely(err))
return err;
offs += len;
while (offs > mtd->erasesize) {
offsets[eb++] = mtd->erasesize;
offs -= mtd->erasesize;
}
offsets[eb] = offs;
return 0;
}
static int write_eraseblock(int ebnum)
{
loff_t addr = ebnum * mtd->erasesize;
return mtdtest_write(mtd, addr, mtd->erasesize, iobuf);
}
static int erasecrosstest(void)
{
int err = 0, i, ebnum, ebnum2;
loff_t addr0;
char *readbuf = twopages;
pr_info("erasecrosstest\n");
ebnum = 0;
addr0 = 0;
for (i = 0; i < ebcnt && bbt[i]; ++i) {
addr0 += mtd->erasesize;
ebnum += 1;
}
ebnum2 = ebcnt - 1;
while (ebnum2 && bbt[ebnum2])
ebnum2 -= 1;
pr_info("erasing block %d\n", ebnum);
err = mtdtest_erase_eraseblock(mtd, ebnum);
if (err)
return err;
pr_info("writing 1st page of block %d\n", ebnum);
prandom_bytes_state(&rnd_state, writebuf, pgsize);
strcpy(writebuf, "There is no data like this!");
err = mtdtest_write(mtd, addr0, pgsize, writebuf);
if (err)
return err;
pr_info("reading 1st page of block %d\n", ebnum);
memset(readbuf, 0, pgsize);
err = mtdtest_read(mtd, addr0, pgsize, readbuf);
if (err)
return err;
pr_info("verifying 1st page of block %d\n", ebnum);
if (memcmp(writebuf, readbuf, pgsize)) {
pr_err("verify failed!\n");
errcnt += 1;
return -1;
}
pr_info("erasing block %d\n", ebnum);
err = mtdtest_erase_eraseblock(mtd, ebnum);
if (err)
return err;
pr_info("writing 1st page of block %d\n", ebnum);
prandom_bytes_state(&rnd_state, writebuf, pgsize);
strcpy(writebuf, "There is no data like this!");
err = mtdtest_write(mtd, addr0, pgsize, writebuf);
if (err)
return err;
pr_info("erasing block %d\n", ebnum2);
err = mtdtest_erase_eraseblock(mtd, ebnum2);
if (err)
return err;
pr_info("reading 1st page of block %d\n", ebnum);
memset(readbuf, 0, pgsize);
err = mtdtest_read(mtd, addr0, pgsize, readbuf);
if (err)
return err;
pr_info("verifying 1st page of block %d\n", ebnum);
if (memcmp(writebuf, readbuf, pgsize)) {
pr_err("verify failed!\n");
errcnt += 1;
return -1;
}
if (!err)
pr_info("erasecrosstest ok\n");
return err;
}
