C++ (Cpp) read_oob_data Examples

Example #1

File: denali.c Project: FEDEVEL/imx6rex-linux-3.10.17

static int denali_read_oob(struct mtd_info *mtd, struct nand_chip *chip,
			   int page)
{
	read_oob_data(mtd, chip->oob_poi, page);

	return 0;
}

Example #2

File: denali.c Project: rrowicki/Chrono_Kernel-1

static int denali_read_oob(struct mtd_info *mtd, struct nand_chip *chip,
			   int page, int sndcmd)
{
	read_oob_data(mtd, chip->oob_poi, page);

	return 0; /* notify NAND core to send command to
			   NAND device. */
}

Example #3

File: denali.c Project: FEDEVEL/imx6rex-linux-3.10.17

static int denali_read_page(struct mtd_info *mtd, struct nand_chip *chip,
			    uint8_t *buf, int oob_required, int page)
{
	unsigned int max_bitflips;
	struct denali_nand_info *denali = mtd_to_denali(mtd);

	dma_addr_t addr = denali->buf.dma_buf;
	size_t size = denali->mtd.writesize + denali->mtd.oobsize;

	uint32_t irq_status = 0;
	uint32_t irq_mask = INTR_STATUS__ECC_TRANSACTION_DONE |
			    INTR_STATUS__ECC_ERR;
	bool check_erased_page = false;

	if (page != denali->page) {
		dev_err(denali->dev, "IN %s: page %d is not"
				" equal to denali->page %d, investigate!!",
				__func__, page, denali->page);
		BUG();
	}

	setup_ecc_for_xfer(denali, true, false);

	denali_enable_dma(denali, true);
	dma_sync_single_for_device(denali->dev, addr, size, DMA_FROM_DEVICE);

	clear_interrupts(denali);
	denali_setup_dma(denali, DENALI_READ);

	/* wait for operation to complete */
	irq_status = wait_for_irq(denali, irq_mask);

	dma_sync_single_for_cpu(denali->dev, addr, size, DMA_FROM_DEVICE);

	memcpy(buf, denali->buf.buf, mtd->writesize);

	check_erased_page = handle_ecc(denali, buf, irq_status, &max_bitflips);
	denali_enable_dma(denali, false);

	if (check_erased_page) {
		read_oob_data(&denali->mtd, chip->oob_poi, denali->page);

		/* check ECC failures that may have occurred on erased pages */
		if (check_erased_page) {
			if (!is_erased(buf, denali->mtd.writesize))
				denali->mtd.ecc_stats.failed++;
			if (!is_erased(buf, denali->mtd.oobsize))
				denali->mtd.ecc_stats.failed++;
		}
	}
	return max_bitflips;
}

Example #4

File: nand_denali.c Project: MinimumLaw/ravion-barebox

static int denali_read_page(struct mtd_info *mtd, struct nand_chip *chip,
			    uint8_t *buf, int oob_required, int page)
{
	unsigned int max_bitflips = 0;
	struct denali_nand_info *denali = mtd_to_denali(mtd);

	dma_addr_t addr = (unsigned long)denali->buf.buf;
	size_t size = denali->mtd.writesize + denali->mtd.oobsize;

	uint32_t irq_status;
	uint32_t irq_mask = denali->have_hw_ecc_fixup ?
		(INTR_STATUS__DMA_CMD_COMP) :
		(INTR_STATUS__ECC_TRANSACTION_DONE | INTR_STATUS__ECC_ERR);
	bool check_erased_page = false;

	if (page != denali->page) {
		dev_err(denali->dev,
			"IN %s: page %d is not equal to denali->page %d",
			__func__, page, denali->page);
		BUG();
	}

	setup_ecc_for_xfer(denali, true, false);

	denali_enable_dma(denali, true);
	dma_sync_single_for_device(addr, size, DMA_FROM_DEVICE);

	clear_interrupts(denali);
	denali_setup_dma(denali, DENALI_READ);

	/* wait for operation to complete */
	irq_status = wait_for_irq(denali, irq_mask);

	dma_sync_single_for_cpu(addr, size, DMA_FROM_DEVICE);

	memcpy(buf, denali->buf.buf, mtd->writesize);

	check_erased_page = handle_ecc(denali, buf, irq_status, &max_bitflips);
	denali_enable_dma(denali, false);

	if (check_erased_page) {
		if (denali->have_hw_ecc_fixup) {
			/* When we have hw ecc fixup, don't check oob.
			 * That code below looks jacked up anyway.  I mean,
			 * look at it, wtf? */
			if (!is_erased(buf, denali->mtd.writesize))
				denali->mtd.ecc_stats.failed++;
		} else {
			read_oob_data(&denali->mtd, chip->oob_poi,
				denali->page);

			/* check ECC failures that may have occurred on
			 * erased pages */
			if (check_erased_page) {
				if (!is_erased(buf, denali->mtd.writesize))
					denali->mtd.ecc_stats.failed++;
				if (!is_erased(buf, denali->mtd.oobsize))
					denali->mtd.ecc_stats.failed++;
			}
		}
	}
	return max_bitflips;
}