#include <asm/io.h>
+/*
+ * Multiblock erase if number of blocks to erase is 2 or more.
+ * Maximum number of blocks for simultaneous erase is 64.
+ */
+#define MB_ERASE_MIN_BLK_COUNT 2
+#define MB_ERASE_MAX_BLK_COUNT 64
+
/* Default Flex-OneNAND boundary and lock respectively */
static int flex_bdry[MAX_DIES * 2] = { -1, 0, -1, 0 };
break;
case ONENAND_CMD_ERASE:
+ case ONENAND_CMD_MULTIBLOCK_ERASE:
+ case ONENAND_CMD_ERASE_VERIFY:
case ONENAND_CMD_BUFFERRAM:
case ONENAND_CMD_OTP_ACCESS:
block = onenand_block(this, addr);
if (interrupt & flags)
break;
- if (state != FL_READING)
+ if (state != FL_READING && state != FL_PREPARING_ERASE)
cond_resched();
}
/* To get correct interrupt status in timeout case */
return -EIO;
}
+ if (state == FL_PREPARING_ERASE && !(interrupt & ONENAND_INT_ERASE)) {
+ printk(KERN_ERR "%s: mb erase timeout! ctrl=0x%04x intr=0x%04x\n",
+ __func__, ctrl, interrupt);
+ return -EIO;
+ }
+
+ if (!(interrupt & ONENAND_INT_MASTER)) {
+ printk(KERN_ERR "%s: timeout! ctrl=0x%04x intr=0x%04x\n",
+ __func__, ctrl, interrupt);
+ return -EIO;
+ }
+
/* If there's controller error, it's a real error */
if (ctrl & ONENAND_CTRL_ERROR) {
printk(KERN_ERR "%s: controller error = 0x%04x\n",
return bbm->isbad_bbt(mtd, ofs, allowbbt);
}
+
+static int onenand_multiblock_erase_verify(struct mtd_info *mtd,
+ struct erase_info *instr)
+{
+ struct onenand_chip *this = mtd->priv;
+ loff_t addr = instr->addr;
+ int len = instr->len;
+ unsigned int block_size = (1 << this->erase_shift);
+ int ret = 0;
+
+ while (len) {
+ this->command(mtd, ONENAND_CMD_ERASE_VERIFY, addr, block_size);
+ ret = this->wait(mtd, FL_VERIFYING_ERASE);
+ if (ret) {
+ printk(KERN_ERR "%s: Failed verify, block %d\n",
+ __func__, onenand_block(this, addr));
+ instr->state = MTD_ERASE_FAILED;
+ instr->fail_addr = addr;
+ return -1;
+ }
+ len -= block_size;
+ addr += block_size;
+ }
+ return 0;
+}
+
+/**
+ * onenand_multiblock_erase - [Internal] erase block(s) using multiblock erase
+ * @param mtd MTD device structure
+ * @param instr erase instruction
+ * @param region erase region
+ *
+ * Erase one or more blocks up to 64 block at a time
+ */
+static int onenand_multiblock_erase(struct mtd_info *mtd,
+ struct erase_info *instr,
+ unsigned int block_size)
+{
+ struct onenand_chip *this = mtd->priv;
+ loff_t addr = instr->addr;
+ int len = instr->len;
+ int eb_count = 0;
+ int ret = 0;
+ int bdry_block = 0;
+
+ instr->state = MTD_ERASING;
+
+ if (ONENAND_IS_DDP(this)) {
+ loff_t bdry_addr = this->chipsize >> 1;
+ if (addr < bdry_addr && (addr + len) > bdry_addr)
+ bdry_block = bdry_addr >> this->erase_shift;
+ }
+
+ /* Pre-check bbs */
+ while (len) {
+ /* Check if we have a bad block, we do not erase bad blocks */
+ if (onenand_block_isbad_nolock(mtd, addr, 0)) {
+ printk(KERN_WARNING "%s: attempt to erase a bad block "
+ "at addr 0x%012llx\n",
+ __func__, (unsigned long long) addr);
+ instr->state = MTD_ERASE_FAILED;
+ return -EIO;
+ }
+ len -= block_size;
+ addr += block_size;
+ }
+
+ len = instr->len;
+ addr = instr->addr;
+
+ /* loop over 64 eb batches */
+ while (len) {
+ struct erase_info verify_instr = *instr;
+ int max_eb_count = MB_ERASE_MAX_BLK_COUNT;
+
+ verify_instr.addr = addr;
+ verify_instr.len = 0;
+
+ /* do not cross chip boundary */
+ if (bdry_block) {
+ int this_block = (addr >> this->erase_shift);
+
+ if (this_block < bdry_block) {
+ max_eb_count = min(max_eb_count,
+ (bdry_block - this_block));
+ }
+ }
+
+ eb_count = 0;
+
+ while (len > block_size && eb_count < (max_eb_count - 1)) {
+ this->command(mtd, ONENAND_CMD_MULTIBLOCK_ERASE,
+ addr, block_size);
+ onenand_invalidate_bufferram(mtd, addr, block_size);
+
+ ret = this->wait(mtd, FL_PREPARING_ERASE);
+ if (ret) {
+ printk(KERN_ERR "%s: Failed multiblock erase, "
+ "block %d\n", __func__,
+ onenand_block(this, addr));
+ instr->state = MTD_ERASE_FAILED;
+ instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
+ return -EIO;
+ }
+
+ len -= block_size;
+ addr += block_size;
+ eb_count++;
+ }
+
+ /* last block of 64-eb series */
+ cond_resched();
+ this->command(mtd, ONENAND_CMD_ERASE, addr, block_size);
+ onenand_invalidate_bufferram(mtd, addr, block_size);
+
+ ret = this->wait(mtd, FL_ERASING);
+ /* Check if it is write protected */
+ if (ret) {
+ printk(KERN_ERR "%s: Failed erase, block %d\n",
+ __func__, onenand_block(this, addr));
+ instr->state = MTD_ERASE_FAILED;
+ instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
+ return -EIO;
+ }
+
+ len -= block_size;
+ addr += block_size;
+ eb_count++;
+
+ /* verify */
+ verify_instr.len = eb_count * block_size;
+ if (onenand_multiblock_erase_verify(mtd, &verify_instr)) {
+ instr->state = verify_instr.state;
+ instr->fail_addr = verify_instr.fail_addr;
+ return -EIO;
+ }
+
+ }
+ return 0;
+}
+
+
/**
* onenand_block_by_block_erase - [Internal] erase block(s) using regular erase
* @param mtd MTD device structure
/* Grab the lock and see if the device is available */
onenand_get_device(mtd, FL_ERASING);
- ret = onenand_block_by_block_erase(mtd, instr, region, block_size);
+ if (region || instr->len < MB_ERASE_MIN_BLK_COUNT * block_size) {
+ /* region is set for Flex-OneNAND (no mb erase) */
+ ret = onenand_block_by_block_erase(mtd, instr,
+ region, block_size);
+ } else {
+ ret = onenand_multiblock_erase(mtd, instr, block_size);
+ }
/* Deselect and wake up anyone waiting on the device */
onenand_release_device(mtd);
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff