#include <linux/slab.h>#include <linux/init.h>#include <linux/module.h>#include <linux/mtd/mtd.h>#include <linux/mtd/nand.h>#include <linux/mtd/partitions.h>#include <asm/arch/memmap.h>#include <asm/arch/hwregs/reg_map.h>#include <asm/arch/hwregs/reg_rdwr.h>#include <asm/arch/hwregs/gio_defs.h>#include <asm/arch/hwregs/bif_core_defs.h>#include <asm/io.h>#include <linux/time.h>Include dependency graph for nandflash.c:
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Defines | |
| #define | CE_BIT 4 |
| #define | CLE_BIT 5 |
| #define | ALE_BIT 6 |
| #define | BY_BIT 7 |
| #define | PIN_BITMASK ((1 << CE_BIT) | (1 << CLE_BIT) | (1 << ALE_BIT)) |
| #define | CTRL_BITMASK (NAND_NCE | NAND_CLE | NAND_ALE) |
| #define | DEBUG_ELPHEL_MTD 1 |
| when enabled allows monitoring NAND requests by OR-ing 0x10000000 with cfg3 (not used) | |
Functions | |
| static void | crisv32_hwcontrol (struct mtd_info *mtd, int cmd, unsigned int ctrl) |
| int | crisv32_device_ready (struct mtd_info *mtd) |
| mtd_info *__init | crisv32_nand_flash_probe (void) |
Variables | |
| static struct mtd_info * | crisv32_mtd = NULL |
| volatile unsigned long * | port_dummy_addr |
| #define ALE_BIT 6 |
Definition at line 34 of file nandflash.c.
Referenced by crisv32_hwcontrol(), and crisv32_nand_flash_probe().
| #define BY_BIT 7 |
Definition at line 35 of file nandflash.c.
Referenced by crisv32_device_ready(), and crisv32_nand_flash_probe().
| #define CE_BIT 4 |
Definition at line 32 of file nandflash.c.
Referenced by crisv32_hwcontrol(), and crisv32_nand_flash_probe().
| #define CLE_BIT 5 |
Definition at line 33 of file nandflash.c.
Referenced by crisv32_hwcontrol(), and crisv32_nand_flash_probe().
| #define CTRL_BITMASK (NAND_NCE | NAND_CLE | NAND_ALE) |
| #define DEBUG_ELPHEL_MTD 1 |
when enabled allows monitoring NAND requests by OR-ing 0x10000000 with cfg3 (not used)
Definition at line 44 of file nandflash.c.
| #define PIN_BITMASK ((1 << CE_BIT) | (1 << CLE_BIT) | (1 << ALE_BIT)) |
| int crisv32_device_ready | ( | struct mtd_info * | mtd | ) |
Definition at line 112 of file nandflash.c.
References BY_BIT, NAND_NCE, and printk.
Referenced by crisv32_nand_flash_probe().
| static void crisv32_hwcontrol | ( | struct mtd_info * | mtd, | |
| int | cmd, | |||
| unsigned int | ctrl | |||
| ) | [static] |
read from unused CSR1 (0 w.s.) - used to make sure bus write cycle (possibly delayed by DMA) is over and it is OK to change ALE, CLE, ...
these commands take a small fraction of the time compared to block read/write, so there is really no sense to optimize it.
Make sure port_dummy_addr[0] is not optimized out. Will that work?
Definition at line 53 of file nandflash.c.
References ALE_BIT, CE_BIT, CLE_BIT, CTRL_BITMASK, NAND_ALE, NAND_CLE, NAND_CMD_NONE, NAND_CTRL_CHANGE, NAND_NCE, PIN_BITMASK, port_dummy_addr, printk, mtd_info::priv, and writeb().
Referenced by crisv32_nand_flash_probe().
| struct mtd_info* __init crisv32_nand_flash_probe | ( | void | ) |
Definition at line 125 of file nandflash.c.
struct mtd_info* crisv32_mtd = NULL [static] |
| volatile unsigned long* port_dummy_addr |
Definition at line 50 of file nandflash.c.
Referenced by crisv32_hwcontrol(), and crisv32_nand_flash_probe().
1.5.1