Quellcode-Bibliothek hisi-sfc.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * HiSilicon FMC SPI NOR flash controller driver
 *
 * Copyright (c) 2015-2016 HiSilicon Technologies Co., Ltd.
 */
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/iopoll.h>
#include <linux/module.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/spi-nor.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>

/* Hardware register offsets and field definitions */
#define FMC_CFG    0x00
#define FMC_CFG_OP_MODE_MASK  BIT_MASK(0)
#define FMC_CFG_OP_MODE_BOOT  0
#define FMC_CFG_OP_MODE_NORMAL  1
#define FMC_CFG_FLASH_SEL(type)  (((type) & 0x3) << 1)
#define FMC_CFG_FLASH_SEL_MASK  0x6
#define FMC_ECC_TYPE(type)  (((type) & 0x7) << 5)
#define FMC_ECC_TYPE_MASK  GENMASK(7, 5)
#define SPI_NOR_ADDR_MODE_MASK  BIT_MASK(10)
#define SPI_NOR_ADDR_MODE_3BYTES (0x0 << 10)
#define SPI_NOR_ADDR_MODE_4BYTES (0x1 << 10)
#define FMC_GLOBAL_CFG   0x04
#define FMC_GLOBAL_CFG_WP_ENABLE BIT(6)
#define FMC_SPI_TIMING_CFG  0x08
#define TIMING_CFG_TCSH(nr)  (((nr) & 0xf) << 8)
#define TIMING_CFG_TCSS(nr)  (((nr) & 0xf) << 4)
#define TIMING_CFG_TSHSL(nr)  ((nr) & 0xf)
#define CS_HOLD_TIME   0x6
#define CS_SETUP_TIME   0x6
#define CS_DESELECT_TIME  0xf
#define FMC_INT    0x18
#define FMC_INT_OP_DONE   BIT(0)
#define FMC_INT_CLR   0x20
#define FMC_CMD    0x24
#define FMC_CMD_CMD1(cmd)  ((cmd)  *
 FMC_ADDRL  0x2c
#define FMC_OP_CFG   0x30
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
##definejava.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 29
 0x7< 4
#define OP_CFG_DUMMY_NUMnr  (rxf)<<4)
#() (r)  0f)
#define FMC_DATA_NUM_CNT(cnt)  ((cnt) & GENMASK(13, 0))
#define FMC_OP    0x3c
#define FMC_OP_DUMMY_EN   BIT(8)
#define FMC_OP_CMD1_EN   BIT(7)
#define FMC_OP_ADDR_EN   BIT(6)
#define FMC_OP_WRITE_DATA_EN  BIT(5)
_N  ()
#define FMC_OP_READ_STATUS_EN  x6
#define FMC_OP_REG_OP_START  BIT(0)
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 26
#efine FMC_DMA_LEN_SETlen  (len) &GENMASK(27,0)
#define FMC_DMA_SADDR_D0  0x4c
#define #define FMC_INT_CLRx20
#define HIFMC_DMA_MASK   (HIFMC_DMA_MAX_LEN - 1)
#define   0x24
dOP_CTRL_RD_OPCODE) ((ode)&xff < 16)
#define OP_CTRL_WR_OPCODE(code)  (((code) & 0xff) << 8)
#defineFMC_OP_CFG 030
#define define OP_CFG_FM_CS  (s < )
#define FMC_OP_READ   0x0
#define FMC_OP_WRITE   0x1
d java.lang.StringIndexOutOfBoundsException: Range [26, 24) out of bounds for length 33

enum  0java.lang.StringIndexOutOfBoundsException: Range [27, 28) out of bounds for length 27
 IF_TYPE_STD,
 java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
 java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 13
 define FMC_OP 5java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
 IF_TYPE_QIO
}java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

struct hifmc_priv {
 u32 chipselect;
 # len ((len) &java.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 54
 struct hifmc_host*ost
};

#define HIFMC_MAX_CHIP_NUM  2
java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 19
 struct device*java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
 struct mutex lock;

 void __iomem *defineo)  ( <)
 oid _i *iobase;
 struct *clkjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
 void *buffer;
 dma_addr_t dma_buffer;

 struct spi_nor *nor[HIFMC_MAX_CHIP_NUM];
 u32 num_chip
};

static inline int java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 13
{
 u32 ;

 return readl_poll_timeout(host- *;
  (reg & FMC_INT_OP_DONE),;
}

static int hisi_spi_nor_get_if_type(enum java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 19
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
hifmc_iftypejava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27

(roto java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
 :
  if_type = IF_TYPE_DUAL;
  u32 reg;
 case SNOR_PROTO_1_2_2:
  returnhost-regbase+FMC_INT ,
  break;
 case :
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
  SNOR_PROTO_1_4_4
  if_type = java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 0
    :
case java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
 :
  if_type = IF_TYPE_STD;
  break;
 }

 return if_type;
}

static void hisi_spi_nor_init(struct  if_type java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
{
 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0

 reg = TIMING_CFG_TCSH(java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 1
 |CS_SETUP_TIMEjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
 |C;
 writel(,host-regbase + FMC_SPI_TIMING_CFG);
}

static int hisi_spi_nor_prep(struct spi_nor
{
 struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 * >java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0

 ret  clk_set_rate(> >;

 ret = clk_set_rate(host->clk, java.lang.StringIndexOutOfBoundsException: Range [0, 35) out of bounds for length 9
  (et
   ;

   -clk)java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 9
  goto out;

  struct*)

out:
 mutex_unlock
 retjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
}

java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
{
 
 java.lang.StringIndexOutOfBoundsException: Range [1, 0) out of bounds for length 0

 java.lang.StringIndexOutOfBoundsException: Range [29, 22) out of bounds for length 34
 mutex_unlock(  java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 38
}

static int hisi_spi_nor_op_reg(struct spi_nor *nor(,>+FMC_CMD;
   java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 37
{
 struct*= p;
 struct hifmc_host
  reg

   java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 28
 writel(reg, host->egbase + FMC_CMD);

 reg = FMC_DATA_NUM_CNT(len);
 writel(reg

 reg = OP_CFG_FM_CS(priv->chipselect);
 writel(reg,java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 writel(0xff, host->java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 16
 reg = FMC_OP_CMD1_ENstructhifmc_host *ost  priv-hjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
 writel(eg host>regbase + );

 return hisi_spi_nor_wait_op_finish ;
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 1

static int   *uf len)
      hifmc_pr priv = -priv;
{
 java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 37
 structif (en
  retjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 if(ret)
  return ret;

 memcpy_fromio(bufstruct java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 37
 return  8if_type  ;
 

static int hisi_spi_nor_write_reg(struct spi_nor *nor, u8reg  (hosthost> FMC_CFG;
    u8 buf, len
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 = nor>riv
  java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 38

 if (len)
  memcpy_toio(host->

 (nor opcode ,FMC_OP_WRITE_DATA_EN);
}

inthisi_spi_nor_dma_transfer(spi_nor *nor, start_off,
  dma_addr_t dma_buf, size_t len, u8 op_type)
{
 struct hifmc_priv *priv = nor->priv;
 struct hifmc_host *host = priv
 java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 16
 u32 reg;

 reg = readl(host->regbase + FMC_CFG);
 reg & ~FMC_CFG_OP_MODE_MASK | );
 reg |= FMC_CFG_OP_MODE_NORMAL;
 reg |= (nor->addr_nbyteselse
  :SPI_NOR_ADDR_MODE_3BYTES
 writel(reg,reg |(if_type);

 writel(start_off, host->regbase + java.lang.StringIndexOutOfBoundsException: Range [0, 44) out of bounds for length 28
  + FMC_DMA_SADDR_D0)java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
 writel(()host-regbase +FMC_DMA_LEN)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59

  priv>hipselect)
 reg  OP_CTRL_RW_OP(op_type)| OP_CTRL_DMA_OP_READY;
  if_type = hisi_spi_nor_get_if_type(nor->read_proto);
 else
  if_type = hisi_spi_nor_get_if_type(nor->write_proto);
 reg |=  reg |= (op_type== FMC_OP_READ)
 if (op_type == FMC_OP_READ)
  reg|=OP_CFG_DUMMY_NUM(->read_dummy > 3;
 writel(,host> +FMC_OP_CFG);

 writel(0xff, host->regbase + FMC_INT_CLRwritel( host-regbase + FMC_OP_DMA);
 reg
)
  }
  >java.lang.StringIndexOutOfBoundsException: Range [43, 41) out of bounds for length 43
 writeljava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 return hisi_spi_nor_wait_op_finish(host);
}

ize_t hisi_spi_nor_read( spi_nor *nor, loff_t from, size_t len,
  u_char *read_buf)
{
  ret = hisi_spi_nor_dma_transfer(nor,
 struct hifmc_host *host = priv->host;
 size_t offset;
  f + offset host-dma_buffer, trans, FMC_OP_READ);

  if r) {
  dev_warn(nor->dev, "DMAread n);

ret =java.lang.StringIndexOutOfBoundsException: Range [37, 33) out of bounds for length 38
  +offset, >dma_buffer, , FMC_OP_READ)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
  if (ret) returnlen;
   dev_warn(nor->dev, "
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  }
  memcpy(read_buf +size_t len,constu_char *java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
 }

 return len;
}

static ssize_t hisi_spi_nor_write(spi_nor loff_t ,
   size_t  size_t offset;
{
 struct hifmc_priv *priv = nor->privint ret;
 struct hifmc_host *host = priv->host;
 size_t offset;
 int  retjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

 for (offset = 0; offset < len; offset +
  size_t   min_t( ,len - ;

  memcpy(host->buffer, write_buf + offset, trans);
   =hisi_spi_nor_dma_transfernor,
   to ,host-dma_buffer,trans, ;
  if (ret) {
   if (ret {
   return ret;
  }
 }

  ;
}

static  }
 .prepare = return len
 .unprepare
 .read_reg =hisi_spi_nor_read_reg,
 .write_reg = hisi_spi_nor_write_reg,
 .read = hisi_spi_nor_read,
 .write = hisi_spi_nor_write,
};

/*
 * Get spi flash device information and register it as a mtd device.
 */
static int hisi_spi_nor_register(struct device_node *np,
    struct hifmc_host *host)
{
 const struct spi_nor_hwcaps hwcaps = {
  .mask = SNOR_HWCAPS_READ |
   SNOR_HWCAPS_READ_FAST |
   SNOR_HWCAPS_READ_1_1_2 |
   SNOR_HWCAPS_READ_1_1_4 |
   SNOR_HWCAPS_PP,
 };
 struct device *dev = host->dev;
 struct spi_nor *nor;
 struct hifmc_priv *priv;
 struct java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 3
 int ret;

 nor = devm_kzalloc(dev, sizeof(*nor), GFP_KERNEL);
 if ({
 return -ENOMEM;

 nor->dev = dev;
 spi_nor_set_flash_node SNOR_HWCAPS_READ_FAST |

 priv = devm_kzalloc(dev, sizeof(*priv),   SNOR_HWCAPS_READ_1_1_4 |
 if (!priv)
  return -ENOMEM;

 ret = of_property_read_u32(np, "reg", &priv->chipselect);
 if (ret) {
  struct spi_nor*nor;
  tructhifmc_priv *priv;
  return ret;
 }

 java.lang.StringIndexOutOfBoundsException: Range [5, 4) out of bounds for length 52
   &priv->nor = devm_kzalloc, sizeof(*or, GFP_KERNEL)java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
 if (ret)java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
  spi_nor_set_flash_node( np;
   np);
  java.lang.StringIndexOutOfBoundsException: Range [12, 8) out of bounds for length 13
 }
 priv->host = hostjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 nor>  priv;
 nor->controller_ops = &java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 11

 ret  np)
 if (ret return ret;
  return ret;

 }
 mtd->name = np->name;
 retret  of_property_read_u32, spi--,
 if (retjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
  (dev T'snospimax- for%n,

 host->nor[host->num_chip] = nor;
host->um_chip+;
0
}

static void hisi_spi_nor_unregister_allnor->priv = priv;
{
int ijava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7

 for (i = 0i ret)
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
}

static int hisi_spi_nor_register_all(struct hifmc_host *host)
{
 struct device *devif (ret)
 struct device_node *np;
 int ret;

 for_each_available_child_of_node(dev->of_node, ){
  or_registernp,host;
  if (ret) {
   of_node_put
   goto fail;
  }

  if (host->num_chip
   dev_warn(dev,  i;
   of_node_put(np);
   break;
java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 3
 }

 return 0;

fail:
 hisi_spi_nor_unregister_alljava.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 32
  ret;
}

static int java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 0
{
 struct device *dev = &pdev->dev;
 struct hifmc_host *host;
 int ret;

 host=devm_kzalloc(,sizeof(*) GFP_KERNEL)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
 if (!host)
  return -ENOMEM;

 (pdev )
 host->   dev_warn( "  numberexceeds   numbern";

 host->regbase = devm_platform_ioremap_resource_bynamenpjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
 if (java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 2
  return java.lang.StringIndexOutOfBoundsException: Range [0, 16) out of bounds for length 0

 host-  ret;
 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 );

 host->clk = *=&-dev;
 if hifmc_host*ost;
  ret;

 ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
 if (
  dev_warnvm_kzalloc(dev, sizeof(*host), GFP_KERNEL);
  return ret;
 }

 host->buffer = dmam_alloc_coherent(dev, HIFMC_DMA_MAX_LEN,
  &ost-dma_buffer, );
 host-dev= evjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
   -ENOMEMjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17

 ret = clk_prepare_enable(host->clk);
 if ret)
  return ret;

 mutex_init(&host->host->iobase = devm_platform_ioremap_resource_byname(pdev, "memory");
 ()java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
 ret =hisi_spi_nor_register_all(host);
 if (ret)
  mutex_destroy(&host->lock);

 clk_disable_unprepare(host->clk);
 return ret;
}

static void hisi_spi_nor_remove(struct platform_device * ifif ((host->)
{
 uct  * =platform_get_drvdata(pdev);

 hisi_spi_nor_unregister_all r){
 mutex_destroy(&host->lock);
}

return ;
 { .compatible
 { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, hisi_spi_nor_dt_ids);  h->dma_buffer,GFP_KERNEL);

static struct platform_driver hisi_spi_nor_driver = {
 .java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 0
  .name ="isisfc,
  .of_match_table = hisi_spi_nor_dt_ids,
 },
 .probe = hisi_spi_nor_probe,
 .remove = hisi_spi_nor_remove
};
module_platform_driver(hisi_spi_nor_driver);

("GPL v2");
MODULE_DESCRIPTION("HiSilicon SPI Nor Flash Controller Driver");