mirror of https://gitee.com/openkylin/linux.git
mtd: nand: denali: use the mtd instance embedded in struct nand_chip
struct nand_chip now embeds an mtd device. Make use of this mtd instance. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Boris BREZILLON
Brian Norris
parent
a723bf6a58
commit
442f201b93
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@ -75,7 +75,10 @@ MODULE_PARM_DESC(onfi_timing_mode,
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* this macro allows us to convert from an MTD structure to our own
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* device context (denali) structure.
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*/
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#define mtd_to_denali(m) container_of(m, struct denali_nand_info, mtd)
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static inline struct denali_nand_info *mtd_to_denali(struct mtd_info *mtd)
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{
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return container_of(mtd_to_nand(mtd), struct denali_nand_info, nand);
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}
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/*
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* These constants are defined by the driver to enable common driver
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@ -986,6 +989,8 @@ static bool handle_ecc(struct denali_nand_info *denali, uint8_t *buf,
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* than one NAND connected.
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*/
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if (err_byte < ECC_SECTOR_SIZE) {
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struct mtd_info *mtd =
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nand_to_mtd(&denali->nand);
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int offset;
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offset = (err_sector *
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@ -995,7 +1000,7 @@ static bool handle_ecc(struct denali_nand_info *denali, uint8_t *buf,
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err_device;
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/* correct the ECC error */
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buf[offset] ^= err_correction_value;
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denali->mtd.ecc_stats.corrected++;
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mtd->ecc_stats.corrected++;
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bitflips++;
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}
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} else {
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@ -1062,7 +1067,7 @@ static int write_page(struct mtd_info *mtd, struct nand_chip *chip,
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{
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struct denali_nand_info *denali = mtd_to_denali(mtd);
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dma_addr_t addr = denali->buf.dma_buf;
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size_t size = denali->mtd.writesize + denali->mtd.oobsize;
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size_t size = mtd->writesize + mtd->oobsize;
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uint32_t irq_status;
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uint32_t irq_mask = INTR_STATUS__DMA_CMD_COMP |
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INTR_STATUS__PROGRAM_FAIL;
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@ -1160,7 +1165,7 @@ static int denali_read_page(struct mtd_info *mtd, struct nand_chip *chip,
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struct denali_nand_info *denali = mtd_to_denali(mtd);
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dma_addr_t addr = denali->buf.dma_buf;
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size_t size = denali->mtd.writesize + denali->mtd.oobsize;
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size_t size = mtd->writesize + mtd->oobsize;
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uint32_t irq_status;
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uint32_t irq_mask = INTR_STATUS__ECC_TRANSACTION_DONE |
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@ -1193,14 +1198,14 @@ static int denali_read_page(struct mtd_info *mtd, struct nand_chip *chip,
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denali_enable_dma(denali, false);
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if (check_erased_page) {
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read_oob_data(&denali->mtd, chip->oob_poi, denali->page);
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read_oob_data(mtd, chip->oob_poi, denali->page);
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/* check ECC failures that may have occurred on erased pages */
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if (check_erased_page) {
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if (!is_erased(buf, denali->mtd.writesize))
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denali->mtd.ecc_stats.failed++;
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if (!is_erased(buf, denali->mtd.oobsize))
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denali->mtd.ecc_stats.failed++;
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if (!is_erased(buf, mtd->writesize))
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mtd->ecc_stats.failed++;
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if (!is_erased(buf, mtd->oobsize))
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mtd->ecc_stats.failed++;
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}
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}
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return max_bitflips;
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@ -1211,7 +1216,7 @@ static int denali_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
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{
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struct denali_nand_info *denali = mtd_to_denali(mtd);
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dma_addr_t addr = denali->buf.dma_buf;
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size_t size = denali->mtd.writesize + denali->mtd.oobsize;
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size_t size = mtd->writesize + mtd->oobsize;
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uint32_t irq_mask = INTR_STATUS__DMA_CMD_COMP;
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if (page != denali->page) {
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@ -1428,6 +1433,7 @@ static void denali_drv_init(struct denali_nand_info *denali)
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int denali_init(struct denali_nand_info *denali)
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{
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struct mtd_info *mtd = nand_to_mtd(&denali->nand);
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int ret;
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if (denali->platform == INTEL_CE4100) {
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@ -1447,7 +1453,7 @@ int denali_init(struct denali_nand_info *denali)
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if (!denali->buf.buf)
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return -ENOMEM;
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denali->mtd.dev.parent = denali->dev;
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mtd->dev.parent = denali->dev;
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denali_hw_init(denali);
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denali_drv_init(denali);
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@ -1463,8 +1469,8 @@ int denali_init(struct denali_nand_info *denali)
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/* now that our ISR is registered, we can enable interrupts */
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denali_set_intr_modes(denali, true);
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denali->mtd.name = "denali-nand";
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denali->mtd.priv = &denali->nand;
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mtd->name = "denali-nand";
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mtd->priv = &denali->nand;
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/* register the driver with the NAND core subsystem */
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denali->nand.select_chip = denali_select_chip;
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@ -1477,7 +1483,7 @@ int denali_init(struct denali_nand_info *denali)
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* this is the first stage in a two step process to register
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* with the nand subsystem
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*/
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if (nand_scan_ident(&denali->mtd, denali->max_banks, NULL)) {
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if (nand_scan_ident(mtd, denali->max_banks, NULL)) {
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ret = -ENXIO;
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goto failed_req_irq;
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}
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@ -1485,7 +1491,7 @@ int denali_init(struct denali_nand_info *denali)
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/* allocate the right size buffer now */
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devm_kfree(denali->dev, denali->buf.buf);
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denali->buf.buf = devm_kzalloc(denali->dev,
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denali->mtd.writesize + denali->mtd.oobsize,
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mtd->writesize + mtd->oobsize,
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GFP_KERNEL);
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if (!denali->buf.buf) {
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ret = -ENOMEM;
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@ -1500,7 +1506,7 @@ int denali_init(struct denali_nand_info *denali)
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}
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denali->buf.dma_buf = dma_map_single(denali->dev, denali->buf.buf,
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denali->mtd.writesize + denali->mtd.oobsize,
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mtd->writesize + mtd->oobsize,
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DMA_BIDIRECTIONAL);
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if (dma_mapping_error(denali->dev, denali->buf.dma_buf)) {
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dev_err(denali->dev, "Spectra: failed to map DMA buffer\n");
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@ -1521,10 +1527,10 @@ int denali_init(struct denali_nand_info *denali)
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denali->nand.bbt_erase_shift += (denali->devnum - 1);
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denali->nand.phys_erase_shift = denali->nand.bbt_erase_shift;
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denali->nand.chip_shift += (denali->devnum - 1);
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denali->mtd.writesize <<= (denali->devnum - 1);
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denali->mtd.oobsize <<= (denali->devnum - 1);
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denali->mtd.erasesize <<= (denali->devnum - 1);
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denali->mtd.size = denali->nand.numchips * denali->nand.chipsize;
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mtd->writesize <<= (denali->devnum - 1);
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mtd->oobsize <<= (denali->devnum - 1);
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mtd->erasesize <<= (denali->devnum - 1);
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mtd->size = denali->nand.numchips * denali->nand.chipsize;
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denali->bbtskipbytes *= denali->devnum;
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/*
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@ -1551,16 +1557,16 @@ int denali_init(struct denali_nand_info *denali)
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* SLC if possible.
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* */
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if (!nand_is_slc(&denali->nand) &&
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(denali->mtd.oobsize > (denali->bbtskipbytes +
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ECC_15BITS * (denali->mtd.writesize /
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(mtd->oobsize > (denali->bbtskipbytes +
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ECC_15BITS * (mtd->writesize /
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ECC_SECTOR_SIZE)))) {
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/* if MLC OOB size is large enough, use 15bit ECC*/
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denali->nand.ecc.strength = 15;
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denali->nand.ecc.layout = &nand_15bit_oob;
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denali->nand.ecc.bytes = ECC_15BITS;
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iowrite32(15, denali->flash_reg + ECC_CORRECTION);
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} else if (denali->mtd.oobsize < (denali->bbtskipbytes +
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ECC_8BITS * (denali->mtd.writesize /
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} else if (mtd->oobsize < (denali->bbtskipbytes +
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ECC_8BITS * (mtd->writesize /
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ECC_SECTOR_SIZE))) {
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pr_err("Your NAND chip OOB is not large enough to contain 8bit ECC correction codes");
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goto failed_req_irq;
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@ -1574,11 +1580,11 @@ int denali_init(struct denali_nand_info *denali)
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denali->nand.ecc.bytes *= denali->devnum;
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denali->nand.ecc.strength *= denali->devnum;
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denali->nand.ecc.layout->eccbytes *=
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denali->mtd.writesize / ECC_SECTOR_SIZE;
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mtd->writesize / ECC_SECTOR_SIZE;
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denali->nand.ecc.layout->oobfree[0].offset =
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denali->bbtskipbytes + denali->nand.ecc.layout->eccbytes;
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denali->nand.ecc.layout->oobfree[0].length =
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denali->mtd.oobsize - denali->nand.ecc.layout->eccbytes -
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mtd->oobsize - denali->nand.ecc.layout->eccbytes -
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denali->bbtskipbytes;
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/*
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@ -1586,7 +1592,7 @@ int denali_init(struct denali_nand_info *denali)
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* contained by each nand chip. blksperchip will help driver to
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* know how many blocks is taken by FW.
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*/
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denali->totalblks = denali->mtd.size >> denali->nand.phys_erase_shift;
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denali->totalblks = mtd->size >> denali->nand.phys_erase_shift;
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denali->blksperchip = denali->totalblks / denali->nand.numchips;
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/* override the default read operations */
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@ -1599,12 +1605,12 @@ int denali_init(struct denali_nand_info *denali)
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denali->nand.ecc.write_oob = denali_write_oob;
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denali->nand.erase = denali_erase;
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if (nand_scan_tail(&denali->mtd)) {
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if (nand_scan_tail(mtd)) {
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ret = -ENXIO;
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goto failed_req_irq;
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}
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ret = mtd_device_register(&denali->mtd, NULL, 0);
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ret = mtd_device_register(mtd, NULL, 0);
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if (ret) {
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dev_err(denali->dev, "Spectra: Failed to register MTD: %d\n",
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ret);
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@ -1622,14 +1628,15 @@ EXPORT_SYMBOL(denali_init);
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/* driver exit point */
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void denali_remove(struct denali_nand_info *denali)
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{
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struct mtd_info *mtd = nand_to_mtd(&denali->nand);
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/*
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* Pre-compute DMA buffer size to avoid any problems in case
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* nand_release() ever changes in a way that mtd->writesize and
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* mtd->oobsize are not reliable after this call.
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*/
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int bufsize = denali->mtd.writesize + denali->mtd.oobsize;
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int bufsize = mtd->writesize + mtd->oobsize;
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nand_release(&denali->mtd);
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nand_release(mtd);
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denali_irq_cleanup(denali->irq, denali);
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dma_unmap_single(denali->dev, denali->buf.dma_buf, bufsize,
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DMA_BIDIRECTIONAL);
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@ -450,7 +450,6 @@ struct nand_buf {
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#define DT 3
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struct denali_nand_info {
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struct mtd_info mtd;
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struct nand_chip nand;
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int flash_bank; /* currently selected chip */
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int status;
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