/* SPDX-License-Identifier: GPL-2.0
*
* SuperH FLCTL nand controller
*
* Copyright © 2008 Renesas Solutions Corp.
*/
#ifndef __SH_FLCTL_H__
#define __SH_FLCTL_H__
#include <linux/completion.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/partitions.h>
#include <linux/pm_qos.h>
/* FLCTL registers */
#define FLCMNCR(f) (f->reg + 0 x0)
#define FLCMDCR(f) (f->reg + 0 x4)
#define FLCMCDR(f) (f->reg + 0 x8)
#define FLADR(f) (f->reg + 0 xC)
#define FLADR2(f) (f->reg + 0 x3C)
#define FLDATAR(f) (f->reg + 0 x10)
#define FLDTCNTR(f) (f->reg + 0 x14)
#define FLINTDMACR(f) (f->reg + 0 x18)
#define FLBSYTMR(f) (f->reg + 0 x1C)
#define FLBSYCNT(f) (f->reg + 0 x20)
#define FLDTFIFO(f) (f->reg + 0 x24)
#define FLECFIFO(f) (f->reg + 0 x28)
#define FLTRCR(f) (f->reg + 0 x2C)
#define FLHOLDCR(f) (f->reg + 0 x38)
#define FL4ECCRESULT0(f) (f->reg + 0 x80)
#define FL4ECCRESULT1(f) (f->reg + 0 x84)
#define FL4ECCRESULT2(f) (f->reg + 0 x88)
#define FL4ECCRESULT3(f) (f->reg + 0 x8C)
#define FL4ECCCR(f) (f->reg + 0 x90)
#define FL4ECCCNT(f) (f->reg + 0 x94)
#define FLERRADR(f) (f->reg + 0 x98)
/* FLCMNCR control bits */
#define _4 ECCCNTEN (0 x1 << 24 )
#define _4 ECCEN (0 x1 << 23 )
#define _4 ECCCORRECT (0 x1 << 22 )
#define SHBUSSEL (0 x1 << 20 )
#define SEL_16BIT (0 x1 << 19 )
#define SNAND_E (0 x1 << 18 ) /* SNAND (0=512 1=2048)*/
#define QTSEL_E (0 x1 << 17 )
#define ENDIAN (0 x1 << 16 ) /* 1 = little endian */
#define FCKSEL_E (0 x1 << 15 )
#define ACM_SACCES_MODE (0 x01 << 10 )
#define NANWF_E (0 x1 << 9 )
#define SE_D (0 x1 << 8 ) /* Spare area disable */
#define CE1_ENABLE (0 x1 << 4 ) /* Chip Enable 1 */
#define CE0_ENABLE (0 x1 << 3 ) /* Chip Enable 0 */
#define TYPESEL_SET (0 x1 << 0 )
/*
* Clock settings using the PULSEx registers from FLCMNCR
*
* Some hardware uses bits called PULSEx instead of FCKSEL_E and QTSEL_E
* to control the clock divider used between the High-Speed Peripheral Clock
* and the FLCTL internal clock. If so, use CLK_8_BIT_xxx for connecting 8 bit
* and CLK_16_BIT_xxx for connecting 16 bit bus bandwith NAND chips. For the 16
* bit version the divider is seperate for the pulse width of high and low
* signals.
*/
#define PULSE3 (0 x1 << 27 )
#define PULSE2 (0 x1 << 17 )
#define PULSE1 (0 x1 << 15 )
#define PULSE0 (0 x1 << 9 )
#define CLK_8B_0_5 PULSE1
#define CLK_8B_1 0 x0
#define CLK_8B_1_5 (PULSE1 | PULSE2)
#define CLK_8B_2 PULSE0
#define CLK_8B_3 (PULSE0 | PULSE1 | PULSE2)
#define CLK_8B_4 (PULSE0 | PULSE2)
#define CLK_16B_6L_2H PULSE0
#define CLK_16B_9L_3H (PULSE0 | PULSE1 | PULSE2)
#define CLK_16B_12L_4H (PULSE0 | PULSE2)
/* FLCMDCR control bits */
#define ADRCNT2_E (0 x1 << 31 ) /* 5byte address enable */
#define ADRMD_E (0 x1 << 26 ) /* Sector address access */
#define CDSRC_E (0 x1 << 25 ) /* Data buffer selection */
#define DOSR_E (0 x1 << 24 ) /* Status read check */
#define SELRW (0 x1 << 21 ) /* 0:read 1:write */
#define DOADR_E (0 x1 << 20 ) /* Address stage execute */
#define ADRCNT_1 (0 x00 << 18 ) /* Address data bytes: 1byte */
#define ADRCNT_2 (0 x01 << 18 ) /* Address data bytes: 2byte */
#define ADRCNT_3 (0 x02 << 18 ) /* Address data bytes: 3byte */
#define ADRCNT_4 (0 x03 << 18 ) /* Address data bytes: 4byte */
#define DOCMD2_E (0 x1 << 17 ) /* 2nd cmd stage execute */
#define DOCMD1_E (0 x1 << 16 ) /* 1st cmd stage execute */
/* FLINTDMACR control bits */
#define ESTERINTE (0 x1 << 24 ) /* ECC error interrupt enable */
#define AC1CLR (0 x1 << 19 ) /* ECC FIFO clear */
#define AC0CLR (0 x1 << 18 ) /* Data FIFO clear */
#define DREQ0EN (0 x1 << 16 ) /* FLDTFIFODMA Request Enable */
#define ECERB (0 x1 << 9 ) /* ECC error */
#define STERB (0 x1 << 8 ) /* Status error */
#define STERINTE (0 x1 << 4 ) /* Status error enable */
/* FLTRCR control bits */
#define TRSTRT (0 x1 << 0 ) /* translation start */
#define TREND (0 x1 << 1 ) /* translation end */
/*
* FLHOLDCR control bits
*
* HOLDEN: Bus Occupancy Enable (inverted)
* Enable this bit when the external bus might be used in between transfers.
* If not set and the bus gets used by other modules, a deadlock occurs.
*/
#define HOLDEN (0 x1 << 0 )
/* FL4ECCCR control bits */
#define _4 ECCFA (0 x1 << 2 ) /* 4 symbols correct fault */
#define _4 ECCEND (0 x1 << 1 ) /* 4 symbols end */
#define _4 ECCEXST (0 x1 << 0 ) /* 4 symbols exist */
#define LOOP_TIMEOUT_MAX 0 x00010000
enum flctl_ecc_res_t {
FL_SUCCESS,
FL_REPAIRABLE,
FL_ERROR,
FL_TIMEOUT
};
struct dma_chan;
struct sh_flctl {
struct nand_chip chip;
struct platform_device *pdev;
struct dev_pm_qos_request pm_qos;
void __iomem *reg;
resource_size_t fifo;
uint8_t done_buff[2048 + 64 ]; /* max size 2048 + 64 */
int read_bytes;
unsigned int index;
int seqin_column; /* column in SEQIN cmd */
int seqin_page_addr; /* page_addr in SEQIN cmd */
uint32_t seqin_read_cmd; /* read cmd in SEQIN cmd */
int erase1_page_addr; /* page_addr in ERASE1 cmd */
uint32_t erase_ADRCNT; /* bits of FLCMDCR in ERASE1 cmd */
uint32_t rw_ADRCNT; /* bits of FLCMDCR in READ WRITE cmd */
uint32_t flcmncr_base; /* base value of FLCMNCR */
uint32_t flintdmacr_base; /* irq enable bits */
unsigned page_size:1 ; /* NAND page size (0 = 512, 1 = 2048) */
unsigned hwecc:1 ; /* Hardware ECC (0 = disabled, 1 = enabled) */
unsigned holden:1 ; /* Hardware has FLHOLDCR and HOLDEN is set */
unsigned qos_request:1 ; /* QoS request to prevent deep power shutdown */
/* DMA related objects */
struct dma_chan *chan_fifo0_rx;
struct dma_chan *chan_fifo0_tx;
struct completion dma_complete;
};
struct sh_flctl_platform_data {
struct mtd_partition *parts;
int nr_parts;
unsigned long flcmncr_val;
unsigned has_hwecc:1 ;
unsigned use_holden:1 ;
unsigned int slave_id_fifo0_tx;
unsigned int slave_id_fifo0_rx;
};
static inline struct sh_flctl *mtd_to_flctl(struct mtd_info *mtdinfo)
{
return container_of(mtd_to_nand(mtdinfo), struct sh_flctl, chip);
}
#endif /* __SH_FLCTL_H__ */
Messung V0.5 in Prozent C=78 H=99 G=88
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-07)
¤
*© Formatika GbR, Deutschland