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Diffstat (limited to 'drivers/mtd/nand/bcm_umi_bch.c')
-rw-r--r--drivers/mtd/nand/bcm_umi_bch.c217
1 files changed, 0 insertions, 217 deletions
diff --git a/drivers/mtd/nand/bcm_umi_bch.c b/drivers/mtd/nand/bcm_umi_bch.c
deleted file mode 100644
index 5914bb32e001..000000000000
--- a/drivers/mtd/nand/bcm_umi_bch.c
+++ /dev/null
@@ -1,217 +0,0 @@
-/*****************************************************************************
-* Copyright 2004 - 2009 Broadcom Corporation. All rights reserved.
-*
-* Unless you and Broadcom execute a separate written software license
-* agreement governing use of this software, this software is licensed to you
-* under the terms of the GNU General Public License version 2, available at
-* http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
-*
-* Notwithstanding the above, under no circumstances may you combine this
-* software in any way with any other Broadcom software provided under a
-* license other than the GPL, without Broadcom's express prior written
-* consent.
-*****************************************************************************/
-
-/* ---- Include Files ---------------------------------------------------- */
-#include "nand_bcm_umi.h"
-
-/* ---- External Variable Declarations ----------------------------------- */
-/* ---- External Function Prototypes ------------------------------------- */
-/* ---- Public Variables ------------------------------------------------- */
-/* ---- Private Constants and Types -------------------------------------- */
-
-/* ---- Private Function Prototypes -------------------------------------- */
-static int bcm_umi_bch_read_page_hwecc(struct mtd_info *mtd,
- struct nand_chip *chip, uint8_t *buf, int oob_required, int page);
-static void bcm_umi_bch_write_page_hwecc(struct mtd_info *mtd,
- struct nand_chip *chip, const uint8_t *buf, int oob_required);
-
-/* ---- Private Variables ------------------------------------------------ */
-
-/*
-** nand_hw_eccoob
-** New oob placement block for use with hardware ecc generation.
-*/
-static struct nand_ecclayout nand_hw_eccoob_512 = {
- /* Reserve 5 for BI indicator */
- .oobfree = {
-#if (NAND_ECC_NUM_BYTES > 3)
- {.offset = 0, .length = 2}
-#else
- {.offset = 0, .length = 5},
- {.offset = 6, .length = 7}
-#endif
- }
-};
-
-/*
-** We treat the OOB for a 2K page as if it were 4 512 byte oobs,
-** except the BI is at byte 0.
-*/
-static struct nand_ecclayout nand_hw_eccoob_2048 = {
- /* Reserve 0 as BI indicator */
- .oobfree = {
-#if (NAND_ECC_NUM_BYTES > 10)
- {.offset = 1, .length = 2},
-#elif (NAND_ECC_NUM_BYTES > 7)
- {.offset = 1, .length = 5},
- {.offset = 16, .length = 6},
- {.offset = 32, .length = 6},
- {.offset = 48, .length = 6}
-#else
- {.offset = 1, .length = 8},
- {.offset = 16, .length = 9},
- {.offset = 32, .length = 9},
- {.offset = 48, .length = 9}
-#endif
- }
-};
-
-/* We treat the OOB for a 4K page as if it were 8 512 byte oobs,
- * except the BI is at byte 0. */
-static struct nand_ecclayout nand_hw_eccoob_4096 = {
- /* Reserve 0 as BI indicator */
- .oobfree = {
-#if (NAND_ECC_NUM_BYTES > 10)
- {.offset = 1, .length = 2},
- {.offset = 16, .length = 3},
- {.offset = 32, .length = 3},
- {.offset = 48, .length = 3},
- {.offset = 64, .length = 3},
- {.offset = 80, .length = 3},
- {.offset = 96, .length = 3},
- {.offset = 112, .length = 3}
-#else
- {.offset = 1, .length = 5},
- {.offset = 16, .length = 6},
- {.offset = 32, .length = 6},
- {.offset = 48, .length = 6},
- {.offset = 64, .length = 6},
- {.offset = 80, .length = 6},
- {.offset = 96, .length = 6},
- {.offset = 112, .length = 6}
-#endif
- }
-};
-
-/* ---- Private Functions ------------------------------------------------ */
-/* ==== Public Functions ================================================= */
-
-/****************************************************************************
-*
-* bcm_umi_bch_read_page_hwecc - hardware ecc based page read function
-* @mtd: mtd info structure
-* @chip: nand chip info structure
-* @buf: buffer to store read data
-* @oob_required: caller expects OOB data read to chip->oob_poi
-*
-***************************************************************************/
-static int bcm_umi_bch_read_page_hwecc(struct mtd_info *mtd,
- struct nand_chip *chip, uint8_t * buf,
- int oob_required, int page)
-{
- int sectorIdx = 0;
- int eccsize = chip->ecc.size;
- int eccsteps = chip->ecc.steps;
- uint8_t *datap = buf;
- uint8_t eccCalc[NAND_ECC_NUM_BYTES];
- int sectorOobSize = mtd->oobsize / eccsteps;
- int stat;
- unsigned int max_bitflips = 0;
-
- for (sectorIdx = 0; sectorIdx < eccsteps;
- sectorIdx++, datap += eccsize) {
- if (sectorIdx > 0) {
- /* Seek to page location within sector */
- chip->cmdfunc(mtd, NAND_CMD_RNDOUT, sectorIdx * eccsize,
- -1);
- }
-
- /* Enable hardware ECC before reading the buf */
- nand_bcm_umi_bch_enable_read_hwecc();
-
- /* Read in data */
- bcm_umi_nand_read_buf(mtd, datap, eccsize);
-
- /* Pause hardware ECC after reading the buf */
- nand_bcm_umi_bch_pause_read_ecc_calc();
-
- /* Read the OOB ECC */
- chip->cmdfunc(mtd, NAND_CMD_RNDOUT,
- mtd->writesize + sectorIdx * sectorOobSize, -1);
- nand_bcm_umi_bch_read_oobEcc(mtd->writesize, eccCalc,
- NAND_ECC_NUM_BYTES,
- chip->oob_poi +
- sectorIdx * sectorOobSize);
-
- /* Correct any ECC detected errors */
- stat =
- nand_bcm_umi_bch_correct_page(datap, eccCalc,
- NAND_ECC_NUM_BYTES);
-
- /* Update Stats */
- if (stat < 0) {
-#if defined(NAND_BCM_UMI_DEBUG)
- printk(KERN_WARNING "%s uncorr_err sectorIdx=%d\n",
- __func__, sectorIdx);
- printk(KERN_WARNING
- "%s data %02x %02x %02x %02x "
- "%02x %02x %02x %02x\n",
- __func__, datap[0], datap[1], datap[2], datap[3],
- datap[4], datap[5], datap[6], datap[7]);
- printk(KERN_WARNING
- "%s ecc %02x %02x %02x %02x "
- "%02x %02x %02x %02x %02x %02x "
- "%02x %02x %02x\n",
- __func__, eccCalc[0], eccCalc[1], eccCalc[2],
- eccCalc[3], eccCalc[4], eccCalc[5], eccCalc[6],
- eccCalc[7], eccCalc[8], eccCalc[9], eccCalc[10],
- eccCalc[11], eccCalc[12]);
- BUG();
-#endif
- mtd->ecc_stats.failed++;
- } else {
-#if defined(NAND_BCM_UMI_DEBUG)
- if (stat > 0) {
- printk(KERN_INFO
- "%s %d correctable_errors detected\n",
- __func__, stat);
- }
-#endif
- mtd->ecc_stats.corrected += stat;
- max_bitflips = max_t(unsigned int, max_bitflips, stat);
- }
- }
- return max_bitflips;
-}
-
-/****************************************************************************
-*
-* bcm_umi_bch_write_page_hwecc - hardware ecc based page write function
-* @mtd: mtd info structure
-* @chip: nand chip info structure
-* @buf: data buffer
-* @oob_required: must write chip->oob_poi to OOB
-*
-***************************************************************************/
-static void bcm_umi_bch_write_page_hwecc(struct mtd_info *mtd,
- struct nand_chip *chip, const uint8_t *buf, int oob_required)
-{
- int sectorIdx = 0;
- int eccsize = chip->ecc.size;
- int eccsteps = chip->ecc.steps;
- const uint8_t *datap = buf;
- uint8_t *oobp = chip->oob_poi;
- int sectorOobSize = mtd->oobsize / eccsteps;
-
- for (sectorIdx = 0; sectorIdx < eccsteps;
- sectorIdx++, datap += eccsize, oobp += sectorOobSize) {
- /* Enable hardware ECC before writing the buf */
- nand_bcm_umi_bch_enable_write_hwecc();
- bcm_umi_nand_write_buf(mtd, datap, eccsize);
- nand_bcm_umi_bch_write_oobEcc(mtd->writesize, oobp,
- NAND_ECC_NUM_BYTES);
- }
-
- bcm_umi_nand_write_buf(mtd, chip->oob_poi, mtd->oobsize);
-}
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