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authorBoris Brezillon <boris.brezillon@bootlin.com>2018-06-07 22:52:56 +0200
committerBoris Brezillon <boris.brezillon@bootlin.com>2018-06-07 22:52:56 +0200
commit6e89b84e28f69c4f848dc8f1ea8fdecf33f2fbb4 (patch)
tree4c32febe723d922cf551e34c5a082033ebe371ce
parentc64d4419a17cfb39a5b573f9016cd02ade4c9a64 (diff)
parentf567c71f4f91d173795a2f46d6fc493387ce084d (diff)
downloadlinux-6e89b84e28f69c4f848dc8f1ea8fdecf33f2fbb4.tar.bz2
Merge tag 'nand/for-4.18' of git://git.infradead.org/linux-mtd into mtd/next
Core changes: - Add Miquel as a NAND maintainer - Add access mode to the nand_page_io_req struct - Fix kernel-doc in rawnand.h - Support bit-wise majority to recover from corrupted ONFI parameter pages - Stop checking FAIL bit after a SET_FEATURES, as documented in the ONFI spec Raw NAND Driver changes: - Fix and cleanup the error path of many NAND controller drivers - GPMI: * Cleanup/simplification of a few aspects in the driver * Take ECC setup specified in the DT into account - sunxi: remove support for GPIO-based R/B polling - MTK: * Use of_device_get_match_data() instead of of_match_device() * Add an entry in MAINTAINERS for this driver * Fix nand-ecc-step-size and nand-ecc-strength description in the DT bindings doc - fsl_ifc: fix ->cmdfunc() to read more than one ONFI parameter page OneNAND driver changes: - samsung: use dev_get_drvdata() instead of platform_get_drvdata()
-rw-r--r--Documentation/devicetree/bindings/mtd/gpmi-nand.txt5
-rw-r--r--Documentation/devicetree/bindings/mtd/mtk-nand.txt24
-rw-r--r--Documentation/devicetree/bindings/mtd/sunxi-nand.txt2
-rw-r--r--MAINTAINERS8
-rw-r--r--drivers/mtd/nand/onenand/samsung.c6
-rw-r--r--drivers/mtd/nand/raw/davinci_nand.c25
-rw-r--r--drivers/mtd/nand/raw/diskonchip.c4
-rw-r--r--drivers/mtd/nand/raw/fsl_elbc_nand.c13
-rw-r--r--drivers/mtd/nand/raw/fsl_ifc_nand.c29
-rw-r--r--drivers/mtd/nand/raw/fsmc_nand.c27
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c54
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c188
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h25
-rw-r--r--drivers/mtd/nand/raw/hisi504_nand.c35
-rw-r--r--drivers/mtd/nand/raw/lpc32xx_mlc.c38
-rw-r--r--drivers/mtd/nand/raw/lpc32xx_slc.c26
-rw-r--r--drivers/mtd/nand/raw/mtk_ecc.c7
-rw-r--r--drivers/mtd/nand/raw/mtk_nand.c10
-rw-r--r--drivers/mtd/nand/raw/nand_base.c89
-rw-r--r--drivers/mtd/nand/raw/sunxi_nand.c91
-rw-r--r--include/linux/mtd/nand.h3
-rw-r--r--include/linux/mtd/rawnand.h35
22 files changed, 328 insertions, 416 deletions
diff --git a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
index b289ef3c1b7e..393588385c6e 100644
--- a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
@@ -47,6 +47,11 @@ Optional properties:
partitions written from Linux with this feature
turned on may not be accessible by the BootROM
code.
+ - nand-ecc-strength: integer representing the number of bits to correct
+ per ECC step. Needs to be a multiple of 2.
+ - nand-ecc-step-size: integer representing the number of data bytes
+ that are covered by a single ECC step. The driver
+ supports 512 and 1024.
The device tree may optionally contain sub-nodes describing partitions of the
address space. See partition.txt for more detail.
diff --git a/Documentation/devicetree/bindings/mtd/mtk-nand.txt b/Documentation/devicetree/bindings/mtd/mtk-nand.txt
index 1c88526dedfc..f20ab4abd214 100644
--- a/Documentation/devicetree/bindings/mtd/mtk-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/mtk-nand.txt
@@ -50,14 +50,19 @@ Optional:
- nand-on-flash-bbt: Store BBT on NAND Flash.
- nand-ecc-mode: the NAND ecc mode (check driver for supported modes)
- nand-ecc-step-size: Number of data bytes covered by a single ECC step.
- valid values: 512 and 1024.
+ valid values:
+ 512 and 1024 on mt2701 and mt2712.
+ 512 only on mt7622.
1024 is recommended for large page NANDs.
- nand-ecc-strength: Number of bits to correct per ECC step.
- The valid values that the controller supports are: 4, 6,
- 8, 10, 12, 14, 16, 18, 20, 22, 24, 28, 32, 36, 40, 44,
- 48, 52, 56, 60.
+ The valid values that each controller supports:
+ mt2701: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 28,
+ 32, 36, 40, 44, 48, 52, 56, 60.
+ mt2712: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 28,
+ 32, 36, 40, 44, 48, 52, 56, 60, 68, 72, 80.
+ mt7622: 4, 6, 8, 10, 12, 14, 16.
The strength should be calculated as follows:
- E = (S - F) * 8 / 14
+ E = (S - F) * 8 / B
S = O / (P / Q)
E : nand-ecc-strength.
S : spare size per sector.
@@ -66,6 +71,15 @@ Optional:
O : oob size.
P : page size.
Q : nand-ecc-step-size.
+ B : number of parity bits needed to correct
+ 1 bitflip.
+ According to MTK NAND controller design,
+ this number depends on max ecc step size
+ that MTK NAND controller supports.
+ If max ecc step size supported is 1024,
+ then it should be always 14. And if max
+ ecc step size is 512, then it should be
+ always 13.
If the result does not match any one of the listed
choices above, please select the smaller valid value from
the list.
diff --git a/Documentation/devicetree/bindings/mtd/sunxi-nand.txt b/Documentation/devicetree/bindings/mtd/sunxi-nand.txt
index 0734f03bf3d3..dcd5a5d80dc0 100644
--- a/Documentation/devicetree/bindings/mtd/sunxi-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/sunxi-nand.txt
@@ -22,8 +22,6 @@ Optional properties:
- reset : phandle + reset specifier pair
- reset-names : must contain "ahb"
- allwinner,rb : shall contain the native Ready/Busy ids.
- or
-- rb-gpios : shall contain the gpios used as R/B pins.
- nand-ecc-mode : one of the supported ECC modes ("hw", "soft", "soft_bch" or
"none")
diff --git a/MAINTAINERS b/MAINTAINERS
index 0a1410d5a621..634abf4569c4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8941,6 +8941,13 @@ L: linux-wireless@vger.kernel.org
S: Maintained
F: drivers/net/wireless/mediatek/mt7601u/
+MEDIATEK NAND CONTROLLER DRIVER
+M: Xiaolei Li <xiaolei.li@mediatek.com>
+L: linux-mtd@lists.infradead.org
+S: Maintained
+F: drivers/mtd/nand/raw/mtk_*
+F: Documentation/devicetree/bindings/mtd/mtk-nand.txt
+
MEDIATEK RANDOM NUMBER GENERATOR SUPPORT
M: Sean Wang <sean.wang@mediatek.com>
S: Maintained
@@ -9574,6 +9581,7 @@ F: drivers/net/ethernet/myricom/myri10ge/
NAND FLASH SUBSYSTEM
M: Boris Brezillon <boris.brezillon@bootlin.com>
+M: Miquel Raynal <miquel.raynal@bootlin.com>
R: Richard Weinberger <richard@nod.at>
L: linux-mtd@lists.infradead.org
W: http://www.linux-mtd.infradead.org/
diff --git a/drivers/mtd/nand/onenand/samsung.c b/drivers/mtd/nand/onenand/samsung.c
index 2e9d076e445a..4cce4c0311ca 100644
--- a/drivers/mtd/nand/onenand/samsung.c
+++ b/drivers/mtd/nand/onenand/samsung.c
@@ -958,8 +958,7 @@ static int s3c_onenand_remove(struct platform_device *pdev)
static int s3c_pm_ops_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct mtd_info *mtd = platform_get_drvdata(pdev);
+ struct mtd_info *mtd = dev_get_drvdata(dev);
struct onenand_chip *this = mtd->priv;
this->wait(mtd, FL_PM_SUSPENDED);
@@ -968,8 +967,7 @@ static int s3c_pm_ops_suspend(struct device *dev)
static int s3c_pm_ops_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct mtd_info *mtd = platform_get_drvdata(pdev);
+ struct mtd_info *mtd = dev_get_drvdata(dev);
struct onenand_chip *this = mtd->priv;
this->unlock_all(mtd);
diff --git a/drivers/mtd/nand/raw/davinci_nand.c b/drivers/mtd/nand/raw/davinci_nand.c
index 0f09518d980f..7255a0d94374 100644
--- a/drivers/mtd/nand/raw/davinci_nand.c
+++ b/drivers/mtd/nand/raw/davinci_nand.c
@@ -27,7 +27,6 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/err.h>
-#include <linux/clk.h>
#include <linux/io.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/partitions.h>
@@ -55,7 +54,6 @@ struct davinci_nand_info {
struct nand_chip chip;
struct device *dev;
- struct clk *clk;
bool is_readmode;
@@ -703,22 +701,6 @@ static int nand_davinci_probe(struct platform_device *pdev)
/* Use board-specific ECC config */
info->chip.ecc.mode = pdata->ecc_mode;
- ret = -EINVAL;
-
- info->clk = devm_clk_get(&pdev->dev, "aemif");
- if (IS_ERR(info->clk)) {
- ret = PTR_ERR(info->clk);
- dev_dbg(&pdev->dev, "unable to get AEMIF clock, err %d\n", ret);
- return ret;
- }
-
- ret = clk_prepare_enable(info->clk);
- if (ret < 0) {
- dev_dbg(&pdev->dev, "unable to enable AEMIF clock, err %d\n",
- ret);
- goto err_clk_enable;
- }
-
spin_lock_irq(&davinci_nand_lock);
/* put CSxNAND into NAND mode */
@@ -732,7 +714,7 @@ static int nand_davinci_probe(struct platform_device *pdev)
ret = nand_scan_ident(mtd, pdata->mask_chipsel ? 2 : 1, NULL);
if (ret < 0) {
dev_dbg(&pdev->dev, "no NAND chip(s) found\n");
- goto err;
+ return ret;
}
switch (info->chip.ecc.mode) {
@@ -838,9 +820,6 @@ err_cleanup_nand:
nand_cleanup(&info->chip);
err:
- clk_disable_unprepare(info->clk);
-
-err_clk_enable:
spin_lock_irq(&davinci_nand_lock);
if (info->chip.ecc.mode == NAND_ECC_HW_SYNDROME)
ecc4_busy = false;
@@ -859,8 +838,6 @@ static int nand_davinci_remove(struct platform_device *pdev)
nand_release(nand_to_mtd(&info->chip));
- clk_disable_unprepare(info->clk);
-
return 0;
}
diff --git a/drivers/mtd/nand/raw/diskonchip.c b/drivers/mtd/nand/raw/diskonchip.c
index 86a258de0b75..8d0fb2daad71 100644
--- a/drivers/mtd/nand/raw/diskonchip.c
+++ b/drivers/mtd/nand/raw/diskonchip.c
@@ -1481,12 +1481,12 @@ static int __init doc_probe(unsigned long physadr)
WriteDOC(tmp, virtadr, Mplus_DOCControl);
WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm);
- mdelay(1);
+ usleep_range(1000, 2000);
/* Enable the Millennium Plus ASIC */
tmp = DOC_MODE_NORMAL | DOC_MODE_MDWREN | DOC_MODE_RST_LAT | DOC_MODE_BDECT;
WriteDOC(tmp, virtadr, Mplus_DOCControl);
WriteDOC(~tmp, virtadr, Mplus_CtrlConfirm);
- mdelay(1);
+ usleep_range(1000, 2000);
ChipID = ReadDOC(virtadr, ChipID);
diff --git a/drivers/mtd/nand/raw/fsl_elbc_nand.c b/drivers/mtd/nand/raw/fsl_elbc_nand.c
index d28df991c73c..51f0b340bc0d 100644
--- a/drivers/mtd/nand/raw/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/raw/fsl_elbc_nand.c
@@ -813,8 +813,6 @@ static int fsl_elbc_chip_remove(struct fsl_elbc_mtd *priv)
struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = priv->ctrl->nand;
struct mtd_info *mtd = nand_to_mtd(&priv->chip);
- nand_release(mtd);
-
kfree(mtd->name);
if (priv->vbase)
@@ -926,15 +924,20 @@ static int fsl_elbc_nand_probe(struct platform_device *pdev)
/* First look for RedBoot table or partitions on the command
* line, these take precedence over device tree information */
- mtd_device_parse_register(mtd, part_probe_types, NULL,
- NULL, 0);
+ ret = mtd_device_parse_register(mtd, part_probe_types, NULL, NULL, 0);
+ if (ret)
+ goto cleanup_nand;
pr_info("eLBC NAND device at 0x%llx, bank %d\n",
(unsigned long long)res.start, priv->bank);
+
return 0;
+cleanup_nand:
+ nand_cleanup(&priv->chip);
err:
fsl_elbc_chip_remove(priv);
+
return ret;
}
@@ -942,7 +945,9 @@ static int fsl_elbc_nand_remove(struct platform_device *pdev)
{
struct fsl_elbc_fcm_ctrl *elbc_fcm_ctrl = fsl_lbc_ctrl_dev->nand;
struct fsl_elbc_mtd *priv = dev_get_drvdata(&pdev->dev);
+ struct mtd_info *mtd = nand_to_mtd(&priv->chip);
+ nand_release(mtd);
fsl_elbc_chip_remove(priv);
mutex_lock(&fsl_elbc_nand_mutex);
diff --git a/drivers/mtd/nand/raw/fsl_ifc_nand.c b/drivers/mtd/nand/raw/fsl_ifc_nand.c
index 61aae0224078..382b67e97174 100644
--- a/drivers/mtd/nand/raw/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/raw/fsl_ifc_nand.c
@@ -342,9 +342,16 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
case NAND_CMD_READID:
case NAND_CMD_PARAM: {
+ /*
+ * For READID, read 8 bytes that are currently used.
+ * For PARAM, read all 3 copies of 256-bytes pages.
+ */
+ int len = 8;
int timing = IFC_FIR_OP_RB;
- if (command == NAND_CMD_PARAM)
+ if (command == NAND_CMD_PARAM) {
timing = IFC_FIR_OP_RBCD;
+ len = 256 * 3;
+ }
ifc_out32((IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_UA << IFC_NAND_FIR0_OP1_SHIFT) |
@@ -354,12 +361,8 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
&ifc->ifc_nand.nand_fcr0);
ifc_out32(column, &ifc->ifc_nand.row3);
- /*
- * although currently it's 8 bytes for READID, we always read
- * the maximum 256 bytes(for PARAM)
- */
- ifc_out32(256, &ifc->ifc_nand.nand_fbcr);
- ifc_nand_ctrl->read_bytes = 256;
+ ifc_out32(len, &ifc->ifc_nand.nand_fbcr);
+ ifc_nand_ctrl->read_bytes = len;
set_addr(mtd, 0, 0, 0);
fsl_ifc_run_command(mtd);
@@ -924,8 +927,6 @@ static int fsl_ifc_chip_remove(struct fsl_ifc_mtd *priv)
{
struct mtd_info *mtd = nand_to_mtd(&priv->chip);
- nand_release(mtd);
-
kfree(mtd->name);
if (priv->vbase)
@@ -1059,21 +1060,29 @@ static int fsl_ifc_nand_probe(struct platform_device *dev)
/* First look for RedBoot table or partitions on the command
* line, these take precedence over device tree information */
- mtd_device_parse_register(mtd, part_probe_types, NULL, NULL, 0);
+ ret = mtd_device_parse_register(mtd, part_probe_types, NULL, NULL, 0);
+ if (ret)
+ goto cleanup_nand;
dev_info(priv->dev, "IFC NAND device at 0x%llx, bank %d\n",
(unsigned long long)res.start, priv->bank);
+
return 0;
+cleanup_nand:
+ nand_cleanup(&priv->chip);
err:
fsl_ifc_chip_remove(priv);
+
return ret;
}
static int fsl_ifc_nand_remove(struct platform_device *dev)
{
struct fsl_ifc_mtd *priv = dev_get_drvdata(&dev->dev);
+ struct mtd_info *mtd = nand_to_mtd(&priv->chip);
+ nand_release(mtd);
fsl_ifc_chip_remove(priv);
mutex_lock(&fsl_ifc_nand_mutex);
diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c
index 28c48dcc514e..f4a5a317d4ae 100644
--- a/drivers/mtd/nand/raw/fsmc_nand.c
+++ b/drivers/mtd/nand/raw/fsmc_nand.c
@@ -1022,12 +1022,12 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
host->read_dma_chan = dma_request_channel(mask, filter, NULL);
if (!host->read_dma_chan) {
dev_err(&pdev->dev, "Unable to get read dma channel\n");
- goto err_req_read_chnl;
+ goto disable_clk;
}
host->write_dma_chan = dma_request_channel(mask, filter, NULL);
if (!host->write_dma_chan) {
dev_err(&pdev->dev, "Unable to get write dma channel\n");
- goto err_req_write_chnl;
+ goto release_dma_read_chan;
}
}
@@ -1050,7 +1050,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
ret = nand_scan_ident(mtd, 1, NULL);
if (ret) {
dev_err(&pdev->dev, "No NAND Device found!\n");
- goto err_scan_ident;
+ goto release_dma_write_chan;
}
if (AMBA_REV_BITS(host->pid) >= 8) {
@@ -1065,7 +1065,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
dev_warn(&pdev->dev, "No oob scheme defined for oobsize %d\n",
mtd->oobsize);
ret = -EINVAL;
- goto err_probe;
+ goto release_dma_write_chan;
}
mtd_set_ooblayout(mtd, &fsmc_ecc4_ooblayout_ops);
@@ -1090,7 +1090,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
default:
dev_err(&pdev->dev, "Unsupported ECC mode!\n");
- goto err_probe;
+ goto release_dma_write_chan;
}
/*
@@ -1110,7 +1110,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
"No oob scheme defined for oobsize %d\n",
mtd->oobsize);
ret = -EINVAL;
- goto err_probe;
+ goto release_dma_write_chan;
}
}
}
@@ -1118,26 +1118,29 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
/* Second stage of scan to fill MTD data-structures */
ret = nand_scan_tail(mtd);
if (ret)
- goto err_probe;
+ goto release_dma_write_chan;
mtd->name = "nand";
ret = mtd_device_register(mtd, NULL, 0);
if (ret)
- goto err_probe;
+ goto cleanup_nand;
platform_set_drvdata(pdev, host);
dev_info(&pdev->dev, "FSMC NAND driver registration successful\n");
+
return 0;
-err_probe:
-err_scan_ident:
+cleanup_nand:
+ nand_cleanup(nand);
+release_dma_write_chan:
if (host->mode == USE_DMA_ACCESS)
dma_release_channel(host->write_dma_chan);
-err_req_write_chnl:
+release_dma_read_chan:
if (host->mode == USE_DMA_ACCESS)
dma_release_channel(host->read_dma_chan);
-err_req_read_chnl:
+disable_clk:
clk_disable_unprepare(host->clk);
+
return ret;
}
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c
index e94556705dc7..83697b8df871 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-lib.c
@@ -258,8 +258,9 @@ int bch_set_geometry(struct gpmi_nand_data *this)
unsigned int gf_len;
int ret;
- if (common_nfc_set_geometry(this))
- return !0;
+ ret = common_nfc_set_geometry(this);
+ if (ret)
+ return ret;
block_count = bch_geo->ecc_chunk_count - 1;
block_size = bch_geo->ecc_chunk_size;
@@ -544,19 +545,13 @@ int gpmi_is_ready(struct gpmi_nand_data *this, unsigned chip)
return reg & mask;
}
-static inline void set_dma_type(struct gpmi_nand_data *this,
- enum dma_ops_type type)
-{
- this->last_dma_type = this->dma_type;
- this->dma_type = type;
-}
-
int gpmi_send_command(struct gpmi_nand_data *this)
{
struct dma_chan *channel = get_dma_chan(this);
struct dma_async_tx_descriptor *desc;
struct scatterlist *sgl;
int chip = this->current_chip;
+ int ret;
u32 pio[3];
/* [1] send out the PIO words */
@@ -586,15 +581,19 @@ int gpmi_send_command(struct gpmi_nand_data *this)
return -EINVAL;
/* [3] submit the DMA */
- set_dma_type(this, DMA_FOR_COMMAND);
- return start_dma_without_bch_irq(this, desc);
+ ret = start_dma_without_bch_irq(this, desc);
+
+ dma_unmap_sg(this->dev, sgl, 1, DMA_TO_DEVICE);
+
+ return ret;
}
-int gpmi_send_data(struct gpmi_nand_data *this)
+int gpmi_send_data(struct gpmi_nand_data *this, const void *buf, int len)
{
struct dma_async_tx_descriptor *desc;
struct dma_chan *channel = get_dma_chan(this);
int chip = this->current_chip;
+ int ret;
uint32_t command_mode;
uint32_t address;
u32 pio[2];
@@ -608,7 +607,7 @@ int gpmi_send_data(struct gpmi_nand_data *this)
| BF_GPMI_CTRL0_CS(chip, this)
| BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this)
| BF_GPMI_CTRL0_ADDRESS(address)
- | BF_GPMI_CTRL0_XFER_COUNT(this->upper_len);
+ | BF_GPMI_CTRL0_XFER_COUNT(len);
pio[1] = 0;
desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
@@ -616,7 +615,7 @@ int gpmi_send_data(struct gpmi_nand_data *this)
return -EINVAL;
/* [2] send DMA request */
- prepare_data_dma(this, DMA_TO_DEVICE);
+ prepare_data_dma(this, buf, len, DMA_TO_DEVICE);
desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
1, DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
@@ -624,16 +623,21 @@ int gpmi_send_data(struct gpmi_nand_data *this)
return -EINVAL;
/* [3] submit the DMA */
- set_dma_type(this, DMA_FOR_WRITE_DATA);
- return start_dma_without_bch_irq(this, desc);
+ ret = start_dma_without_bch_irq(this, desc);
+
+ dma_unmap_sg(this->dev, &this->data_sgl, 1, DMA_TO_DEVICE);
+
+ return ret;
}
-int gpmi_read_data(struct gpmi_nand_data *this)
+int gpmi_read_data(struct gpmi_nand_data *this, void *buf, int len)
{
struct dma_async_tx_descriptor *desc;
struct dma_chan *channel = get_dma_chan(this);
int chip = this->current_chip;
+ int ret;
u32 pio[2];
+ bool direct;
/* [1] : send PIO */
pio[0] = BF_GPMI_CTRL0_COMMAND_MODE(BV_GPMI_CTRL0_COMMAND_MODE__READ)
@@ -641,7 +645,7 @@ int gpmi_read_data(struct gpmi_nand_data *this)
| BF_GPMI_CTRL0_CS(chip, this)
| BF_GPMI_CTRL0_LOCK_CS(LOCK_CS_ENABLE, this)
| BF_GPMI_CTRL0_ADDRESS(BV_GPMI_CTRL0_ADDRESS__NAND_DATA)
- | BF_GPMI_CTRL0_XFER_COUNT(this->upper_len);
+ | BF_GPMI_CTRL0_XFER_COUNT(len);
pio[1] = 0;
desc = dmaengine_prep_slave_sg(channel,
(struct scatterlist *)pio,
@@ -650,7 +654,7 @@ int gpmi_read_data(struct gpmi_nand_data *this)
return -EINVAL;
/* [2] : send DMA request */
- prepare_data_dma(this, DMA_FROM_DEVICE);
+ direct = prepare_data_dma(this, buf, len, DMA_FROM_DEVICE);
desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
1, DMA_DEV_TO_MEM,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
@@ -658,8 +662,14 @@ int gpmi_read_data(struct gpmi_nand_data *this)
return -EINVAL;
/* [3] : submit the DMA */
- set_dma_type(this, DMA_FOR_READ_DATA);
- return start_dma_without_bch_irq(this, desc);
+
+ ret = start_dma_without_bch_irq(this, desc);
+
+ dma_unmap_sg(this->dev, &this->data_sgl, 1, DMA_FROM_DEVICE);
+ if (!direct)
+ memcpy(buf, this->data_buffer_dma, len);
+
+ return ret;
}
int gpmi_send_page(struct gpmi_nand_data *this,
@@ -703,7 +713,6 @@ int gpmi_send_page(struct gpmi_nand_data *this,
if (!desc)
return -EINVAL;
- set_dma_type(this, DMA_FOR_WRITE_ECC_PAGE);
return start_dma_with_bch_irq(this, desc);
}
@@ -785,7 +794,6 @@ int gpmi_read_page(struct gpmi_nand_data *this,
return -EINVAL;
/* [4] submit the DMA */
- set_dma_type(this, DMA_FOR_READ_ECC_PAGE);
return start_dma_with_bch_irq(this, desc);
}
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index c2597c8107a0..f6aa358a3452 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -198,17 +198,16 @@ static inline bool gpmi_check_ecc(struct gpmi_nand_data *this)
*
* We may have available oob space in this case.
*/
-static int set_geometry_by_ecc_info(struct gpmi_nand_data *this)
+static int set_geometry_by_ecc_info(struct gpmi_nand_data *this,
+ unsigned int ecc_strength,
+ unsigned int ecc_step)
{
struct bch_geometry *geo = &this->bch_geometry;
struct nand_chip *chip = &this->nand;
struct mtd_info *mtd = nand_to_mtd(chip);
unsigned int block_mark_bit_offset;
- if (!(chip->ecc_strength_ds > 0 && chip->ecc_step_ds > 0))
- return -EINVAL;
-
- switch (chip->ecc_step_ds) {
+ switch (ecc_step) {
case SZ_512:
geo->gf_len = 13;
break;
@@ -221,8 +220,8 @@ static int set_geometry_by_ecc_info(struct gpmi_nand_data *this)
chip->ecc_strength_ds, chip->ecc_step_ds);
return -EINVAL;
}
- geo->ecc_chunk_size = chip->ecc_step_ds;
- geo->ecc_strength = round_up(chip->ecc_strength_ds, 2);
+ geo->ecc_chunk_size = ecc_step;
+ geo->ecc_strength = round_up(ecc_strength, 2);
if (!gpmi_check_ecc(this))
return -EINVAL;
@@ -230,7 +229,7 @@ static int set_geometry_by_ecc_info(struct gpmi_nand_data *this)
if (geo->ecc_chunk_size < mtd->oobsize) {
dev_err(this->dev,
"unsupported nand chip. ecc size: %d, oob size : %d\n",
- chip->ecc_step_ds, mtd->oobsize);
+ ecc_step, mtd->oobsize);
return -EINVAL;
}
@@ -423,9 +422,20 @@ static int legacy_set_geometry(struct gpmi_nand_data *this)
int common_nfc_set_geometry(struct gpmi_nand_data *this)
{
+ struct nand_chip *chip = &this->nand;
+
+ if (chip->ecc.strength > 0 && chip->ecc.size > 0)
+ return set_geometry_by_ecc_info(this, chip->ecc.strength,
+ chip->ecc.size);
+
if ((of_property_read_bool(this->dev->of_node, "fsl,use-minimum-ecc"))
- || legacy_set_geometry(this))
- return set_geometry_by_ecc_info(this);
+ || legacy_set_geometry(this)) {
+ if (!(chip->ecc_strength_ds > 0 && chip->ecc_step_ds > 0))
+ return -EINVAL;
+
+ return set_geometry_by_ecc_info(this, chip->ecc_strength_ds,
+ chip->ecc_step_ds);
+ }
return 0;
}
@@ -437,33 +447,32 @@ struct dma_chan *get_dma_chan(struct gpmi_nand_data *this)
}
/* Can we use the upper's buffer directly for DMA? */
-void prepare_data_dma(struct gpmi_nand_data *this, enum dma_data_direction dr)
+bool prepare_data_dma(struct gpmi_nand_data *this, const void *buf, int len,
+ enum dma_data_direction dr)
{
struct scatterlist *sgl = &this->data_sgl;
int ret;
/* first try to map the upper buffer directly */
- if (virt_addr_valid(this->upper_buf) &&
- !object_is_on_stack(this->upper_buf)) {
- sg_init_one(sgl, this->upper_buf, this->upper_len);
+ if (virt_addr_valid(buf) && !object_is_on_stack(buf)) {
+ sg_init_one(sgl, buf, len);
ret = dma_map_sg(this->dev, sgl, 1, dr);
if (ret == 0)
goto map_fail;
- this->direct_dma_map_ok = true;
- return;
+ return true;
}
map_fail:
/* We have to use our own DMA buffer. */
- sg_init_one(sgl, this->data_buffer_dma, this->upper_len);
+ sg_init_one(sgl, this->data_buffer_dma, len);
if (dr == DMA_TO_DEVICE)
- memcpy(this->data_buffer_dma, this->upper_buf, this->upper_len);
+ memcpy(this->data_buffer_dma, buf, len);
dma_map_sg(this->dev, sgl, 1, dr);
- this->direct_dma_map_ok = false;
+ return false;
}
/* This will be called after the DMA operation is finished. */
@@ -472,31 +481,6 @@ static void dma_irq_callback(void *param)
struct gpmi_nand_data *this = param;
struct completion *dma_c = &this->dma_done;
- switch (this->dma_type) {
- case DMA_FOR_COMMAND:
- dma_unmap_sg(this->dev, &this->cmd_sgl, 1, DMA_TO_DEVICE);
- break;
-
- case DMA_FOR_READ_DATA:
- dma_unmap_sg(this->dev, &this->data_sgl, 1, DMA_FROM_DEVICE);
- if (this->direct_dma_map_ok == false)
- memcpy(this->upper_buf, this->data_buffer_dma,
- this->upper_len);
- break;
-
- case DMA_FOR_WRITE_DATA:
- dma_unmap_sg(this->dev, &this->data_sgl, 1, DMA_TO_DEVICE);
- break;
-
- case DMA_FOR_READ_ECC_PAGE:
- case DMA_FOR_WRITE_ECC_PAGE:
- /* We have to wait the BCH interrupt to finish. */
- break;
-
- default:
- dev_err(this->dev, "in wrong DMA operation.\n");
- }
-
complete(dma_c);
}
@@ -516,8 +500,7 @@ int start_dma_without_bch_irq(struct gpmi_nand_data *this,
/* Wait for the interrupt from the DMA block. */
timeout = wait_for_completion_timeout(dma_c, msecs_to_jiffies(1000));
if (!timeout) {
- dev_err(this->dev, "DMA timeout, last DMA :%d\n",
- this->last_dma_type);
+ dev_err(this->dev, "DMA timeout, last DMA\n");
gpmi_dump_info(this);
return -ETIMEDOUT;
}
@@ -546,8 +529,7 @@ int start_dma_with_bch_irq(struct gpmi_nand_data *this,
/* Wait for the interrupt from the BCH block. */
timeout = wait_for_completion_timeout(bch_c, msecs_to_jiffies(1000));
if (!timeout) {
- dev_err(this->dev, "BCH timeout, last DMA :%d\n",
- this->last_dma_type);
+ dev_err(this->dev, "BCH timeout\n");
gpmi_dump_info(this);
return -ETIMEDOUT;
}
@@ -695,56 +677,6 @@ static void release_resources(struct gpmi_nand_data *this)
release_dma_channels(this);
}
-static int read_page_prepare(struct gpmi_nand_data *this,
- void *destination, unsigned length,
- void *alt_virt, dma_addr_t alt_phys, unsigned alt_size,
- void **use_virt, dma_addr_t *use_phys)
-{
- struct device *dev = this->dev;
-
- if (virt_addr_valid(destination)) {
- dma_addr_t dest_phys;
-
- dest_phys = dma_map_single(dev, destination,
- length, DMA_FROM_DEVICE);
- if (dma_mapping_error(dev, dest_phys)) {
- if (alt_size < length) {
- dev_err(dev, "Alternate buffer is too small\n");
- return -ENOMEM;
- }
- goto map_failed;
- }
- *use_virt = destination;
- *use_phys = dest_phys;
- this->direct_dma_map_ok = true;
- return 0;
- }
-
-map_failed:
- *use_virt = alt_virt;
- *use_phys = alt_phys;
- this->direct_dma_map_ok = false;
- return 0;
-}
-
-static inline void read_page_end(struct gpmi_nand_data *this,
- void *destination, unsigned length,
- void *alt_virt, dma_addr_t alt_phys, unsigned alt_size,
- void *used_virt, dma_addr_t used_phys)
-{
- if (this->direct_dma_map_ok)
- dma_unmap_single(this->dev, used_phys, length, DMA_FROM_DEVICE);
-}
-
-static inline void read_page_swap_end(struct gpmi_nand_data *this,
- void *destination, unsigned length,
- void *alt_virt, dma_addr_t alt_phys, unsigned alt_size,
- void *used_virt, dma_addr_t used_phys)
-{
- if (!this->direct_dma_map_ok)
- memcpy(destination, alt_virt, length);
-}
-
static int send_page_prepare(struct gpmi_nand_data *this,
const void *source, unsigned length,
void *alt_virt, dma_addr_t alt_phys, unsigned alt_size,
@@ -946,10 +878,8 @@ static void gpmi_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
struct gpmi_nand_data *this = nand_get_controller_data(chip);
dev_dbg(this->dev, "len is %d\n", len);
- this->upper_buf = buf;
- this->upper_len = len;
- gpmi_read_data(this);
+ gpmi_read_data(this, buf, len);
}
static void gpmi_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
@@ -958,10 +888,8 @@ static void gpmi_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
struct gpmi_nand_data *this = nand_get_controller_data(chip);
dev_dbg(this->dev, "len is %d\n", len);
- this->upper_buf = (uint8_t *)buf;
- this->upper_len = len;
- gpmi_send_data(this);
+ gpmi_send_data(this, buf, len);
}
static uint8_t gpmi_read_byte(struct mtd_info *mtd)
@@ -1031,44 +959,46 @@ static int gpmi_ecc_read_page_data(struct nand_chip *chip,
struct mtd_info *mtd = nand_to_mtd(chip);
void *payload_virt;
dma_addr_t payload_phys;
- void *auxiliary_virt;
- dma_addr_t auxiliary_phys;
unsigned int i;
unsigned char *status;
unsigned int max_bitflips = 0;
int ret;
+ bool direct = false;
dev_dbg(this->dev, "page number is : %d\n", page);
- ret = read_page_prepare(this, buf, nfc_geo->payload_size,
- this->payload_virt, this->payload_phys,
- nfc_geo->payload_size,
- &payload_virt, &payload_phys);
- if (ret) {
- dev_err(this->dev, "Inadequate DMA buffer\n");
- ret = -ENOMEM;
- return ret;
+
+ payload_virt = this->payload_virt;
+ payload_phys = this->payload_phys;
+
+ if (virt_addr_valid(buf)) {
+ dma_addr_t dest_phys;
+
+ dest_phys = dma_map_single(this->dev, buf, nfc_geo->payload_size,
+ DMA_FROM_DEVICE);
+ if (!dma_mapping_error(this->dev, dest_phys)) {
+ payload_virt = buf;
+ payload_phys = dest_phys;
+ direct = true;
+ }
}
- auxiliary_virt = this->auxiliary_virt;
- auxiliary_phys = this->auxiliary_phys;
/* go! */
- ret = gpmi_read_page(this, payload_phys, auxiliary_phys);
- read_page_end(this, buf, nfc_geo->payload_size,
- this->payload_virt, this->payload_phys,
- nfc_geo->payload_size,
- payload_virt, payload_phys);
+ ret = gpmi_read_page(this, payload_phys, this->auxiliary_phys);
+
+ if (direct)
+ dma_unmap_single(this->dev, payload_phys, nfc_geo->payload_size,
+ DMA_FROM_DEVICE);
+
if (ret) {
dev_err(this->dev, "Error in ECC-based read: %d\n", ret);
return ret;
}
/* Loop over status bytes, accumulating ECC status. */
- status = auxiliary_virt + nfc_geo->auxiliary_status_offset;
+ status = this->auxiliary_virt + nfc_geo->auxiliary_status_offset;
- read_page_swap_end(this, buf, nfc_geo->payload_size,
- this->payload_virt, this->payload_phys,
- nfc_geo->payload_size,
- payload_virt, payload_phys);
+ if (!direct)
+ memcpy(buf, this->payload_virt, nfc_geo->payload_size);
for (i = 0; i < nfc_geo->ecc_chunk_count; i++, status++) {
if ((*status == STATUS_GOOD) || (*status == STATUS_ERASED))
@@ -1123,7 +1053,7 @@ static int gpmi_ecc_read_page_data(struct nand_chip *chip,
buf + i * nfc_geo->ecc_chunk_size,
nfc_geo->ecc_chunk_size,
eccbuf, eccbytes,
- auxiliary_virt,
+ this->auxiliary_virt,
nfc_geo->metadata_size,
nfc_geo->ecc_strength);
} else {
@@ -1151,7 +1081,7 @@ static int gpmi_ecc_read_page_data(struct nand_chip *chip,
}
/* handle the block mark swapping */
- block_mark_swapping(this, buf, auxiliary_virt);
+ block_mark_swapping(this, buf, this->auxiliary_virt);
if (oob_required) {
/*
@@ -1165,7 +1095,7 @@ static int gpmi_ecc_read_page_data(struct nand_chip *chip,
* the block mark.
*/
memset(chip->oob_poi, ~0, mtd->oobsize);
- chip->oob_poi[0] = ((uint8_t *) auxiliary_virt)[0];
+ chip->oob_poi[0] = ((uint8_t *)this->auxiliary_virt)[0];
}
return max_bitflips;
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
index 62fde59b995f..6aa10d6962d6 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
@@ -77,15 +77,6 @@ struct boot_rom_geometry {
unsigned int search_area_stride_exponent;
};
-/* DMA operations types */
-enum dma_ops_type {
- DMA_FOR_COMMAND = 1,
- DMA_FOR_READ_DATA,
- DMA_FOR_WRITE_DATA,
- DMA_FOR_READ_ECC_PAGE,
- DMA_FOR_WRITE_ECC_PAGE
-};
-
enum gpmi_type {
IS_MX23,
IS_MX28,
@@ -150,13 +141,6 @@ struct gpmi_nand_data {
int current_chip;
unsigned int command_length;
- /* passed from upper layer */
- uint8_t *upper_buf;
- int upper_len;
-
- /* for DMA operations */
- bool direct_dma_map_ok;
-
struct scatterlist cmd_sgl;
char *cmd_buffer;
@@ -178,8 +162,6 @@ struct gpmi_nand_data {
/* DMA channels */
#define DMA_CHANS 8
struct dma_chan *dma_chans[DMA_CHANS];
- enum dma_ops_type last_dma_type;
- enum dma_ops_type dma_type;
struct completion dma_done;
/* private */
@@ -189,7 +171,7 @@ struct gpmi_nand_data {
/* Common Services */
int common_nfc_set_geometry(struct gpmi_nand_data *);
struct dma_chan *get_dma_chan(struct gpmi_nand_data *);
-void prepare_data_dma(struct gpmi_nand_data *,
+bool prepare_data_dma(struct gpmi_nand_data *, const void *buf, int len,
enum dma_data_direction dr);
int start_dma_without_bch_irq(struct gpmi_nand_data *,
struct dma_async_tx_descriptor *);
@@ -208,8 +190,9 @@ int gpmi_disable_clk(struct gpmi_nand_data *this);
int gpmi_setup_data_interface(struct mtd_info *mtd, int chipnr,
const struct nand_data_interface *conf);
void gpmi_nfc_apply_timings(struct gpmi_nand_data *this);
-int gpmi_read_data(struct gpmi_nand_data *);
-int gpmi_send_data(struct gpmi_nand_data *);
+int gpmi_read_data(struct gpmi_nand_data *, void *buf, int len);
+int gpmi_send_data(struct gpmi_nand_data *, const void *buf, int len);
+
int gpmi_send_page(struct gpmi_nand_data *,
dma_addr_t payload, dma_addr_t auxiliary);
int gpmi_read_page(struct gpmi_nand_data *,
diff --git a/drivers/mtd/nand/raw/hisi504_nand.c b/drivers/mtd/nand/raw/hisi504_nand.c
index 27558a67fa41..a1e009c8e556 100644
--- a/drivers/mtd/nand/raw/hisi504_nand.c
+++ b/drivers/mtd/nand/raw/hisi504_nand.c
@@ -731,23 +731,19 @@ static int hisi_nfc_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(dev, "no IRQ resource defined\n");
- ret = -ENXIO;
- goto err_res;
+ return -ENXIO;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host->iobase = devm_ioremap_resource(dev, res);
- if (IS_ERR(host->iobase)) {
- ret = PTR_ERR(host->iobase);
- goto err_res;
- }
+ if (IS_ERR(host->iobase))
+ return PTR_ERR(host->iobase);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
host->mmio = devm_ioremap_resource(dev, res);
if (IS_ERR(host->mmio)) {
- ret = PTR_ERR(host->mmio);
dev_err(dev, "devm_ioremap_resource[1] fail\n");
- goto err_res;
+ return PTR_ERR(host->mmio);
}
mtd->name = "hisi_nand";
@@ -770,19 +766,17 @@ static int hisi_nfc_probe(struct platform_device *pdev)
ret = devm_request_irq(dev, irq, hinfc_irq_handle, 0x0, "nandc", host);
if (ret) {
dev_err(dev, "failed to request IRQ\n");
- goto err_res;
+ return ret;
}
ret = nand_scan_ident(mtd, max_chips, NULL);
if (ret)
- goto err_res;
+ return ret;
host->buffer = dmam_alloc_coherent(dev, mtd->writesize + mtd->oobsize,
&host->dma_buffer, GFP_KERNEL);
- if (!host->buffer) {
- ret = -ENOMEM;
- goto err_res;
- }
+ if (!host->buffer)
+ return -ENOMEM;
host->dma_oob = host->dma_buffer + mtd->writesize;
memset(host->buffer, 0xff, mtd->writesize + mtd->oobsize);
@@ -798,8 +792,7 @@ static int hisi_nfc_probe(struct platform_device *pdev)
*/
default:
dev_err(dev, "NON-2KB page size nand flash\n");
- ret = -EINVAL;
- goto err_res;
+ return -EINVAL;
}
hinfc_write(host, flag, HINFC504_CON);
@@ -809,21 +802,17 @@ static int hisi_nfc_probe(struct platform_device *pdev)
ret = nand_scan_tail(mtd);
if (ret) {
dev_err(dev, "nand_scan_tail failed: %d\n", ret);
- goto err_res;
+ return ret;
}
ret = mtd_device_register(mtd, NULL, 0);
if (ret) {
dev_err(dev, "Err MTD partition=%d\n", ret);
- goto err_mtd;
+ nand_cleanup(chip);
+ return ret;
}
return 0;
-
-err_mtd:
- nand_release(mtd);
-err_res:
- return ret;
}
static int hisi_nfc_remove(struct platform_device *pdev)
diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c
index e357948a7505..052d123a8304 100644
--- a/drivers/mtd/nand/raw/lpc32xx_mlc.c
+++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c
@@ -673,7 +673,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
host->io_base = devm_ioremap_resource(&pdev->dev, rc);
if (IS_ERR(host->io_base))
return PTR_ERR(host->io_base);
-
+
host->io_base_phy = rc->start;
nand_chip = &host->nand_chip;
@@ -706,11 +706,11 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
if (IS_ERR(host->clk)) {
dev_err(&pdev->dev, "Clock initialization failure\n");
res = -ENOENT;
- goto err_exit1;
+ goto free_gpio;
}
res = clk_prepare_enable(host->clk);
if (res)
- goto err_put_clk;
+ goto put_clk;
nand_chip->cmd_ctrl = lpc32xx_nand_cmd_ctrl;
nand_chip->dev_ready = lpc32xx_nand_device_ready;
@@ -744,7 +744,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
res = lpc32xx_dma_setup(host);
if (res) {
res = -EIO;
- goto err_exit2;
+ goto unprepare_clk;
}
}
@@ -754,18 +754,18 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
*/
res = nand_scan_ident(mtd, 1, NULL);
if (res)
- goto err_exit3;
+ goto release_dma_chan;
host->dma_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL);
if (!host->dma_buf) {
res = -ENOMEM;
- goto err_exit3;
+ goto release_dma_chan;
}
host->dummy_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL);
if (!host->dummy_buf) {
res = -ENOMEM;
- goto err_exit3;
+ goto release_dma_chan;
}
nand_chip->ecc.mode = NAND_ECC_HW;
@@ -783,14 +783,14 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
if (host->irq < 0) {
dev_err(&pdev->dev, "failed to get platform irq\n");
res = -EINVAL;
- goto err_exit3;
+ goto release_dma_chan;
}
if (request_irq(host->irq, (irq_handler_t)&lpc3xxx_nand_irq,
IRQF_TRIGGER_HIGH, DRV_NAME, host)) {
dev_err(&pdev->dev, "Error requesting NAND IRQ\n");
res = -ENXIO;
- goto err_exit3;
+ goto release_dma_chan;
}
/*
@@ -799,27 +799,29 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
*/
res = nand_scan_tail(mtd);
if (res)
- goto err_exit4;
+ goto free_irq;
mtd->name = DRV_NAME;
res = mtd_device_register(mtd, host->ncfg->parts,
host->ncfg->num_parts);
- if (!res)
- return res;
+ if (res)
+ goto cleanup_nand;
- nand_release(mtd);
+ return 0;
-err_exit4:
+cleanup_nand:
+ nand_cleanup(nand_chip);
+free_irq:
free_irq(host->irq, host);
-err_exit3:
+release_dma_chan:
if (use_dma)
dma_release_channel(host->dma_chan);
-err_exit2:
+unprepare_clk:
clk_disable_unprepare(host->clk);
-err_put_clk:
+put_clk:
clk_put(host->clk);
-err_exit1:
+free_gpio:
lpc32xx_wp_enable(host);
gpio_free(host->ncfg->wp_gpio);
diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c
index 5f7cc6da0a7f..42820aa1abab 100644
--- a/drivers/mtd/nand/raw/lpc32xx_slc.c
+++ b/drivers/mtd/nand/raw/lpc32xx_slc.c
@@ -831,11 +831,11 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
if (IS_ERR(host->clk)) {
dev_err(&pdev->dev, "Clock failure\n");
res = -ENOENT;
- goto err_exit1;
+ goto enable_wp;
}
res = clk_prepare_enable(host->clk);
if (res)
- goto err_exit1;
+ goto enable_wp;
/* Set NAND IO addresses and command/ready functions */
chip->IO_ADDR_R = SLC_DATA(host->io_base);
@@ -874,19 +874,19 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
GFP_KERNEL);
if (host->data_buf == NULL) {
res = -ENOMEM;
- goto err_exit2;
+ goto unprepare_clk;
}
res = lpc32xx_nand_dma_setup(host);
if (res) {
res = -EIO;
- goto err_exit2;
+ goto unprepare_clk;
}
/* Find NAND device */
res = nand_scan_ident(mtd, 1, NULL);
if (res)
- goto err_exit3;
+ goto release_dma;
/* OOB and ECC CPU and DMA work areas */
host->ecc_buf = (uint32_t *)(host->data_buf + LPC32XX_DMA_DATA_SIZE);
@@ -920,21 +920,23 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
*/
res = nand_scan_tail(mtd);
if (res)
- goto err_exit3;
+ goto release_dma;
mtd->name = "nxp_lpc3220_slc";
res = mtd_device_register(mtd, host->ncfg->parts,
host->ncfg->num_parts);
- if (!res)
- return res;
+ if (res)
+ goto cleanup_nand;
- nand_release(mtd);
+ return 0;
-err_exit3:
+cleanup_nand:
+ nand_cleanup(chip);
+release_dma:
dma_release_channel(host->dma_chan);
-err_exit2:
+unprepare_clk:
clk_disable_unprepare(host->clk);
-err_exit1:
+enable_wp:
lpc32xx_wp_enable(host);
return res;
diff --git a/drivers/mtd/nand/raw/mtk_ecc.c b/drivers/mtd/nand/raw/mtk_ecc.c
index 40d86a861a70..6432bd70c3b3 100644
--- a/drivers/mtd/nand/raw/mtk_ecc.c
+++ b/drivers/mtd/nand/raw/mtk_ecc.c
@@ -500,7 +500,6 @@ static int mtk_ecc_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct mtk_ecc *ecc;
struct resource *res;
- const struct of_device_id *of_ecc_id = NULL;
u32 max_eccdata_size;
int irq, ret;
@@ -508,11 +507,7 @@ static int mtk_ecc_probe(struct platform_device *pdev)
if (!ecc)
return -ENOMEM;
- of_ecc_id = of_match_device(mtk_ecc_dt_match, &pdev->dev);
- if (!of_ecc_id)
- return -ENODEV;
-
- ecc->caps = of_ecc_id->data;
+ ecc->caps = of_device_get_match_data(dev);
max_eccdata_size = ecc->caps->num_ecc_strength - 1;
max_eccdata_size = ecc->caps->ecc_strength[max_eccdata_size];
diff --git a/drivers/mtd/nand/raw/mtk_nand.c b/drivers/mtd/nand/raw/mtk_nand.c
index 6977da3a26aa..75c845adb050 100644
--- a/drivers/mtd/nand/raw/mtk_nand.c
+++ b/drivers/mtd/nand/raw/mtk_nand.c
@@ -1434,7 +1434,6 @@ static int mtk_nfc_probe(struct platform_device *pdev)
struct device_node *np = dev->of_node;
struct mtk_nfc *nfc;
struct resource *res;
- const struct of_device_id *of_nfc_id = NULL;
int ret, irq;
nfc = devm_kzalloc(dev, sizeof(*nfc), GFP_KERNEL);
@@ -1452,6 +1451,7 @@ static int mtk_nfc_probe(struct platform_device *pdev)
else if (!nfc->ecc)
return -ENODEV;
+ nfc->caps = of_device_get_match_data(dev);
nfc->dev = dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1498,14 +1498,6 @@ static int mtk_nfc_probe(struct platform_device *pdev)
goto clk_disable;
}
- of_nfc_id = of_match_device(mtk_nfc_id_table, &pdev->dev);
- if (!of_nfc_id) {
- ret = -ENODEV;
- goto clk_disable;
- }
-
- nfc->caps = of_nfc_id->data;
-
platform_set_drvdata(pdev, nfc);
ret = mtk_nfc_nand_chips_init(dev, nfc);
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 72f3a89da513..327c60b06f87 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -2169,7 +2169,6 @@ static int nand_set_features_op(struct nand_chip *chip, u8 feature,
struct mtd_info *mtd = nand_to_mtd(chip);
const u8 *params = data;
int i, ret;
- u8 status;
if (chip->exec_op) {
const struct nand_sdr_timings *sdr =
@@ -2183,26 +2182,18 @@ static int nand_set_features_op(struct nand_chip *chip, u8 feature,
};
struct nand_operation op = NAND_OPERATION(instrs);
- ret = nand_exec_op(chip, &op);
- if (ret)
- return ret;
-
- ret = nand_status_op(chip, &status);
- if (ret)
- return ret;
- } else {
- chip->cmdfunc(mtd, NAND_CMD_SET_FEATURES, feature, -1);
- for (i = 0; i < ONFI_SUBFEATURE_PARAM_LEN; ++i)
- chip->write_byte(mtd, params[i]);
+ return nand_exec_op(chip, &op);
+ }
- ret = chip->waitfunc(mtd, chip);
- if (ret < 0)
- return ret;
+ chip->cmdfunc(mtd, NAND_CMD_SET_FEATURES, feature, -1);
+ for (i = 0; i < ONFI_SUBFEATURE_PARAM_LEN; ++i)
+ chip->write_byte(mtd, params[i]);
- status = ret;
- }
+ ret = chip->waitfunc(mtd, chip);
+ if (ret < 0)
+ return ret;
- if (status & NAND_STATUS_FAIL)
+ if (ret & NAND_STATUS_FAIL)
return -EIO;
return 0;
@@ -5087,6 +5078,37 @@ ext_out:
}
/*
+ * Recover data with bit-wise majority
+ */
+static void nand_bit_wise_majority(const void **srcbufs,
+ unsigned int nsrcbufs,
+ void *dstbuf,
+ unsigned int bufsize)
+{
+ int i, j, k;
+
+ for (i = 0; i < bufsize; i++) {
+ u8 val = 0;
+
+ for (j = 0; j < 8; j++) {
+ unsigned int cnt = 0;
+
+ for (k = 0; k < nsrcbufs; k++) {
+ const u8 *srcbuf = srcbufs[k];
+
+ if (srcbuf[i] & BIT(j))
+ cnt++;
+ }
+
+ if (cnt > nsrcbufs / 2)
+ val |= BIT(j);
+ }
+
+ ((u8 *)dstbuf)[i] = val;
+ }
+}
+
+/*
* Check if the NAND chip is ONFI compliant, returns 1 if it is, 0 otherwise.
*/
static int nand_flash_detect_onfi(struct nand_chip *chip)
@@ -5102,7 +5124,7 @@ static int nand_flash_detect_onfi(struct nand_chip *chip)
return 0;
/* ONFI chip: allocate a buffer to hold its parameter page */
- p = kzalloc(sizeof(*p), GFP_KERNEL);
+ p = kzalloc((sizeof(*p) * 3), GFP_KERNEL);
if (!p)
return -ENOMEM;
@@ -5113,21 +5135,32 @@ static int nand_flash_detect_onfi(struct nand_chip *chip)
}
for (i = 0; i < 3; i++) {
- ret = nand_read_data_op(chip, p, sizeof(*p), true);
+ ret = nand_read_data_op(chip, &p[i], sizeof(*p), true);
if (ret) {
ret = 0;
goto free_onfi_param_page;
}
- if (onfi_crc16(ONFI_CRC_BASE, (uint8_t *)p, 254) ==
+ if (onfi_crc16(ONFI_CRC_BASE, (u8 *)&p[i], 254) ==
le16_to_cpu(p->crc)) {
+ if (i)
+ memcpy(p, &p[i], sizeof(*p));
break;
}
}
if (i == 3) {
- pr_err("Could not find valid ONFI parameter page; aborting\n");
- goto free_onfi_param_page;
+ const void *srcbufs[3] = {p, p + 1, p + 2};
+
+ pr_warn("Could not find a valid ONFI parameter page, trying bit-wise majority to recover it\n");
+ nand_bit_wise_majority(srcbufs, ARRAY_SIZE(srcbufs), p,
+ sizeof(*p));
+
+ if (onfi_crc16(ONFI_CRC_BASE, (u8 *)p, 254) !=
+ le16_to_cpu(p->crc)) {
+ pr_err("ONFI parameter recovery failed, aborting\n");
+ goto free_onfi_param_page;
+ }
}
/* Check version */
@@ -6630,24 +6663,26 @@ EXPORT_SYMBOL(nand_scan_tail);
#endif
/**
- * nand_scan - [NAND Interface] Scan for the NAND device
+ * nand_scan_with_ids - [NAND Interface] Scan for the NAND device
* @mtd: MTD device structure
* @maxchips: number of chips to scan for
+ * @ids: optional flash IDs table
*
* This fills out all the uninitialized function pointers with the defaults.
* The flash ID is read and the mtd/chip structures are filled with the
* appropriate values.
*/
-int nand_scan(struct mtd_info *mtd, int maxchips)
+int nand_scan_with_ids(struct mtd_info *mtd, int maxchips,
+ struct nand_flash_dev *ids)
{
int ret;
- ret = nand_scan_ident(mtd, maxchips, NULL);
+ ret = nand_scan_ident(mtd, maxchips, ids);
if (!ret)
ret = nand_scan_tail(mtd);
return ret;
}
-EXPORT_SYMBOL(nand_scan);
+EXPORT_SYMBOL(nand_scan_with_ids);
/**
* nand_cleanup - [NAND Interface] Free resources held by the NAND device
diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c
index aad42812a353..d831a141a196 100644
--- a/drivers/mtd/nand/raw/sunxi_nand.c
+++ b/drivers/mtd/nand/raw/sunxi_nand.c
@@ -166,48 +166,15 @@
#define NFC_MAX_CS 7
/*
- * Ready/Busy detection type: describes the Ready/Busy detection modes
- *
- * @RB_NONE: no external detection available, rely on STATUS command
- * and software timeouts
- * @RB_NATIVE: use sunxi NAND controller Ready/Busy support. The Ready/Busy
- * pin of the NAND flash chip must be connected to one of the
- * native NAND R/B pins (those which can be muxed to the NAND
- * Controller)
- * @RB_GPIO: use a simple GPIO to handle Ready/Busy status. The Ready/Busy
- * pin of the NAND flash chip must be connected to a GPIO capable
- * pin.
- */
-enum sunxi_nand_rb_type {
- RB_NONE,
- RB_NATIVE,
- RB_GPIO,
-};
-
-/*
- * Ready/Busy structure: stores information related to Ready/Busy detection
- *
- * @type: the Ready/Busy detection mode
- * @info: information related to the R/B detection mode. Either a gpio
- * id or a native R/B id (those supported by the NAND controller).
- */
-struct sunxi_nand_rb {
- enum sunxi_nand_rb_type type;
- union {
- int gpio;
- int nativeid;
- } info;
-};
-
-/*
* Chip Select structure: stores information related to NAND Chip Select
*
* @cs: the NAND CS id used to communicate with a NAND Chip
- * @rb: the Ready/Busy description
+ * @rb: the Ready/Busy pin ID. -1 means no R/B pin connected to the
+ * NFC
*/
struct sunxi_nand_chip_sel {
u8 cs;
- struct sunxi_nand_rb rb;
+ s8 rb;
};
/*
@@ -440,30 +407,19 @@ static int sunxi_nfc_dev_ready(struct mtd_info *mtd)
struct nand_chip *nand = mtd_to_nand(mtd);
struct sunxi_nand_chip *sunxi_nand = to_sunxi_nand(nand);
struct sunxi_nfc *nfc = to_sunxi_nfc(sunxi_nand->nand.controller);
- struct sunxi_nand_rb *rb;
- int ret;
+ u32 mask;
if (sunxi_nand->selected < 0)
return 0;
- rb = &sunxi_nand->sels[sunxi_nand->selected].rb;
-
- switch (rb->type) {
- case RB_NATIVE:
- ret = !!(readl(nfc->regs + NFC_REG_ST) &
- NFC_RB_STATE(rb->info.nativeid));
- break;
- case RB_GPIO:
- ret = gpio_get_value(rb->info.gpio);
- break;
- case RB_NONE:
- default:
- ret = 0;
+ if (sunxi_nand->sels[sunxi_nand->selected].rb < 0) {
dev_err(nfc->dev, "cannot check R/B NAND status!\n");
- break;
+ return 0;
}
- return ret;
+ mask = NFC_RB_STATE(sunxi_nand->sels[sunxi_nand->selected].rb);
+
+ return !!(readl(nfc->regs + NFC_REG_ST) & mask);
}
static void sunxi_nfc_select_chip(struct mtd_info *mtd, int chip)
@@ -488,12 +444,11 @@ static void sunxi_nfc_select_chip(struct mtd_info *mtd, int chip)
ctl |= NFC_CE_SEL(sel->cs) | NFC_EN |
NFC_PAGE_SHIFT(nand->page_shift);
- if (sel->rb.type == RB_NONE) {
+ if (sel->rb < 0) {
nand->dev_ready = NULL;
} else {
nand->dev_ready = sunxi_nfc_dev_ready;
- if (sel->rb.type == RB_NATIVE)
- ctl |= NFC_RB_SEL(sel->rb.info.nativeid);
+ ctl |= NFC_RB_SEL(sel->rb);
}
writel(mtd->writesize, nfc->regs + NFC_REG_SPARE_AREA);
@@ -1946,26 +1901,10 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
chip->sels[i].cs = tmp;
if (!of_property_read_u32_index(np, "allwinner,rb", i, &tmp) &&
- tmp < 2) {
- chip->sels[i].rb.type = RB_NATIVE;
- chip->sels[i].rb.info.nativeid = tmp;
- } else {
- ret = of_get_named_gpio(np, "rb-gpios", i);
- if (ret >= 0) {
- tmp = ret;
- chip->sels[i].rb.type = RB_GPIO;
- chip->sels[i].rb.info.gpio = tmp;
- ret = devm_gpio_request(dev, tmp, "nand-rb");
- if (ret)
- return ret;
-
- ret = gpio_direction_input(tmp);
- if (ret)
- return ret;
- } else {
- chip->sels[i].rb.type = RB_NONE;
- }
- }
+ tmp < 2)
+ chip->sels[i].rb = tmp;
+ else
+ chip->sels[i].rb = -1;
}
nand = &chip->nand;
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 792ea5c26329..abe975c87b90 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -86,6 +86,7 @@ struct nand_pos {
* @ooboffs: the OOB offset within the page
* @ooblen: the number of OOB bytes to read from/write to this page
* @oobbuf: buffer to store OOB data in or get OOB data from
+ * @mode: one of the %MTD_OPS_XXX mode
*
* This object is used to pass per-page I/O requests to NAND sub-layers. This
* way all useful information are already formatted in a useful way and
@@ -106,6 +107,7 @@ struct nand_page_io_req {
const void *out;
void *in;
} oobbuf;
+ int mode;
};
/**
@@ -599,6 +601,7 @@ static inline void nanddev_io_iter_init(struct nand_device *nand,
{
struct mtd_info *mtd = nanddev_to_mtd(nand);
+ iter->req.mode = req->mode;
iter->req.dataoffs = nanddev_offs_to_pos(nand, offs, &iter->req.pos);
iter->req.ooboffs = req->ooboffs;
iter->oobbytes_per_page = mtd_oobavail(mtd, req);
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 5dad59b31244..a206172ec23b 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -28,7 +28,14 @@ struct nand_flash_dev;
struct device_node;
/* Scan and identify a NAND device */
-int nand_scan(struct mtd_info *mtd, int max_chips);
+int nand_scan_with_ids(struct mtd_info *mtd, int max_chips,
+ struct nand_flash_dev *ids);
+
+static inline int nand_scan(struct mtd_info *mtd, int max_chips)
+{
+ return nand_scan_with_ids(mtd, max_chips, NULL);
+}
+
/*
* Separate phases of nand_scan(), allowing board driver to intervene
* and override command or ECC setup according to flash type.
@@ -740,8 +747,9 @@ enum nand_data_interface_type {
/**
* struct nand_data_interface - NAND interface timing
- * @type: type of the timing
- * @timings: The timing, type according to @type
+ * @type: type of the timing
+ * @timings: The timing, type according to @type
+ * @timings.sdr: Use it when @type is %NAND_SDR_IFACE.
*/
struct nand_data_interface {
enum nand_data_interface_type type;
@@ -798,8 +806,9 @@ struct nand_op_addr_instr {
/**
* struct nand_op_data_instr - Definition of a data instruction
* @len: number of data bytes to move
- * @in: buffer to fill when reading from the NAND chip
- * @out: buffer to read from when writing to the NAND chip
+ * @buf: buffer to fill
+ * @buf.in: buffer to fill when reading from the NAND chip
+ * @buf.out: buffer to read from when writing to the NAND chip
* @force_8bit: force 8-bit access
*
* Please note that "in" and "out" are inverted from the ONFI specification
@@ -842,9 +851,13 @@ enum nand_op_instr_type {
/**
* struct nand_op_instr - Instruction object
* @type: the instruction type
- * @cmd/@addr/@data/@waitrdy: extra data associated to the instruction.
- * You'll have to use the appropriate element
- * depending on @type
+ * @ctx: extra data associated to the instruction. You'll have to use the
+ * appropriate element depending on @type
+ * @ctx.cmd: use it if @type is %NAND_OP_CMD_INSTR
+ * @ctx.addr: use it if @type is %NAND_OP_ADDR_INSTR
+ * @ctx.data: use it if @type is %NAND_OP_DATA_IN_INSTR
+ * or %NAND_OP_DATA_OUT_INSTR
+ * @ctx.waitrdy: use it if @type is %NAND_OP_WAITRDY_INSTR
* @delay_ns: delay the controller should apply after the instruction has been
* issued on the bus. Most modern controllers have internal timings
* control logic, and in this case, the controller driver can ignore
@@ -997,7 +1010,9 @@ struct nand_op_parser_data_constraints {
* struct nand_op_parser_pattern_elem - One element of a pattern
* @type: the instructuction type
* @optional: whether this element of the pattern is optional or mandatory
- * @addr/@data: address or data constraint (number of cycles or data length)
+ * @ctx: address or data constraint
+ * @ctx.addr: address constraint (number of cycles)
+ * @ctx.data: data constraint (data length)
*/
struct nand_op_parser_pattern_elem {
enum nand_op_instr_type type;
@@ -1224,6 +1239,8 @@ int nand_op_parser_exec_op(struct nand_chip *chip,
* devices.
* @priv: [OPTIONAL] pointer to private chip data
* @manufacturer: [INTERN] Contains manufacturer information
+ * @manufacturer.desc: [INTERN] Contains manufacturer's description
+ * @manufacturer.priv: [INTERN] Contains manufacturer private information
*/
struct nand_chip {