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/
usr/
src/
linux-headers-3.0.0-14/
arch/
arm/
plat-omap/
include/
plat/
- drwxr-xr-x
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Viewing file:  gpmc.h (6.16 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/*
* General-Purpose Memory Controller for OMAP2
*
* Copyright (C) 2005-2006 Nokia Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __OMAP2_GPMC_H
#define __OMAP2_GPMC_H
/* Maximum Number of Chip Selects */
#define GPMC_CS_NUM 8
#define GPMC_CS_CONFIG1 0x00
#define GPMC_CS_CONFIG2 0x04
#define GPMC_CS_CONFIG3 0x08
#define GPMC_CS_CONFIG4 0x0c
#define GPMC_CS_CONFIG5 0x10
#define GPMC_CS_CONFIG6 0x14
#define GPMC_CS_CONFIG7 0x18
#define GPMC_CS_NAND_COMMAND 0x1c
#define GPMC_CS_NAND_ADDRESS 0x20
#define GPMC_CS_NAND_DATA 0x24
/* Control Commands */
#define GPMC_CONFIG_RDY_BSY 0x00000001
#define GPMC_CONFIG_DEV_SIZE 0x00000002
#define GPMC_CONFIG_DEV_TYPE 0x00000003
#define GPMC_SET_IRQ_STATUS 0x00000004
#define GPMC_CONFIG_WP 0x00000005
#define GPMC_GET_IRQ_STATUS 0x00000006
#define GPMC_PREFETCH_FIFO_CNT 0x00000007 /* bytes available in FIFO for r/w */
#define GPMC_PREFETCH_COUNT 0x00000008 /* remaining bytes to be read/write*/
#define GPMC_STATUS_BUFFER 0x00000009 /* 1: buffer is available to write */
#define GPMC_NAND_COMMAND 0x0000000a
#define GPMC_NAND_ADDRESS 0x0000000b
#define GPMC_NAND_DATA 0x0000000c
#define GPMC_ENABLE_IRQ 0x0000000d
/* ECC commands */
#define GPMC_ECC_READ 0 /* Reset Hardware ECC for read */
#define GPMC_ECC_WRITE 1 /* Reset Hardware ECC for write */
#define GPMC_ECC_READSYN 2 /* Reset before syndrom is read back */
#define GPMC_CONFIG1_WRAPBURST_SUPP (1 << 31)
#define GPMC_CONFIG1_READMULTIPLE_SUPP (1 << 30)
#define GPMC_CONFIG1_READTYPE_ASYNC (0 << 29)
#define GPMC_CONFIG1_READTYPE_SYNC (1 << 29)
#define GPMC_CONFIG1_WRITEMULTIPLE_SUPP (1 << 28)
#define GPMC_CONFIG1_WRITETYPE_ASYNC (0 << 27)
#define GPMC_CONFIG1_WRITETYPE_SYNC (1 << 27)
#define GPMC_CONFIG1_CLKACTIVATIONTIME(val) ((val & 3) << 25)
#define GPMC_CONFIG1_PAGE_LEN(val) ((val & 3) << 23)
#define GPMC_CONFIG1_WAIT_READ_MON (1 << 22)
#define GPMC_CONFIG1_WAIT_WRITE_MON (1 << 21)
#define GPMC_CONFIG1_WAIT_MON_IIME(val) ((val & 3) << 18)
#define GPMC_CONFIG1_WAIT_PIN_SEL(val) ((val & 3) << 16)
#define GPMC_CONFIG1_DEVICESIZE(val) ((val & 3) << 12)
#define GPMC_CONFIG1_DEVICESIZE_16 GPMC_CONFIG1_DEVICESIZE(1)
#define GPMC_CONFIG1_DEVICETYPE(val) ((val & 3) << 10)
#define GPMC_CONFIG1_DEVICETYPE_NOR GPMC_CONFIG1_DEVICETYPE(0)
#define GPMC_CONFIG1_MUXADDDATA (1 << 9)
#define GPMC_CONFIG1_TIME_PARA_GRAN (1 << 4)
#define GPMC_CONFIG1_FCLK_DIV(val) (val & 3)
#define GPMC_CONFIG1_FCLK_DIV2 (GPMC_CONFIG1_FCLK_DIV(1))
#define GPMC_CONFIG1_FCLK_DIV3 (GPMC_CONFIG1_FCLK_DIV(2))
#define GPMC_CONFIG1_FCLK_DIV4 (GPMC_CONFIG1_FCLK_DIV(3))
#define GPMC_CONFIG7_CSVALID (1 << 6)
#define GPMC_DEVICETYPE_NOR 0
#define GPMC_DEVICETYPE_NAND 2
#define GPMC_CONFIG_WRITEPROTECT 0x00000010
#define GPMC_STATUS_BUFF_EMPTY 0x00000001
#define WR_RD_PIN_MONITORING 0x00600000
#define GPMC_PREFETCH_STATUS_FIFO_CNT(val) ((val >> 24) & 0x7F)
#define GPMC_PREFETCH_STATUS_COUNT(val) (val & 0x00003fff)
#define GPMC_IRQ_FIFOEVENTENABLE 0x01
#define GPMC_IRQ_COUNT_EVENT 0x02
#define PREFETCH_FIFOTHRESHOLD_MAX 0x40
#define PREFETCH_FIFOTHRESHOLD(val) ((val) << 8)
enum omap_ecc {
/* 1-bit ecc: stored at end of spare area */
OMAP_ECC_HAMMING_CODE_DEFAULT = 0, /* Default, s/w method */
OMAP_ECC_HAMMING_CODE_HW, /* gpmc to detect the error */
/* 1-bit ecc: stored at beginning of spare area as romcode */
OMAP_ECC_HAMMING_CODE_HW_ROMCODE, /* gpmc method & romcode layout */
};
/*
* Note that all values in this struct are in nanoseconds except sync_clk
* (which is in picoseconds), while the register values are in gpmc_fck cycles.
*/
struct gpmc_timings {
/* Minimum clock period for synchronous mode (in picoseconds) */
u32 sync_clk;
/* Chip-select signal timings corresponding to GPMC_CS_CONFIG2 */
u16 cs_on; /* Assertion time */
u16 cs_rd_off; /* Read deassertion time */
u16 cs_wr_off; /* Write deassertion time */
/* ADV signal timings corresponding to GPMC_CONFIG3 */
u16 adv_on; /* Assertion time */
u16 adv_rd_off; /* Read deassertion time */
u16 adv_wr_off; /* Write deassertion time */
/* WE signals timings corresponding to GPMC_CONFIG4 */
u16 we_on; /* WE assertion time */
u16 we_off; /* WE deassertion time */
/* OE signals timings corresponding to GPMC_CONFIG4 */
u16 oe_on; /* OE assertion time */
u16 oe_off; /* OE deassertion time */
/* Access time and cycle time timings corresponding to GPMC_CONFIG5 */
u16 page_burst_access; /* Multiple access word delay */
u16 access; /* Start-cycle to first data valid delay */
u16 rd_cycle; /* Total read cycle time */
u16 wr_cycle; /* Total write cycle time */
/* The following are only on OMAP3430 */
u16 wr_access; /* WRACCESSTIME */
u16 wr_data_mux_bus; /* WRDATAONADMUXBUS */
};
extern unsigned int gpmc_ns_to_ticks(unsigned int time_ns);
extern unsigned int gpmc_ps_to_ticks(unsigned int time_ps);
extern unsigned int gpmc_ticks_to_ns(unsigned int ticks);
extern unsigned int gpmc_round_ns_to_ticks(unsigned int time_ns);
extern unsigned long gpmc_get_fclk_period(void);
extern void gpmc_cs_write_reg(int cs, int idx, u32 val);
extern u32 gpmc_cs_read_reg(int cs, int idx);
extern int gpmc_cs_calc_divider(int cs, unsigned int sync_clk);
extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t);
extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base);
extern void gpmc_cs_free(int cs);
extern int gpmc_cs_set_reserved(int cs, int reserved);
extern int gpmc_cs_reserved(int cs);
extern int gpmc_prefetch_enable(int cs, int fifo_th, int dma_mode,
unsigned int u32_count, int is_write);
extern int gpmc_prefetch_reset(int cs);
extern void omap3_gpmc_save_context(void);
extern void omap3_gpmc_restore_context(void);
extern int gpmc_read_status(int cmd);
extern int gpmc_cs_configure(int cs, int cmd, int wval);
extern int gpmc_nand_read(int cs, int cmd);
extern int gpmc_nand_write(int cs, int cmd, int wval);
int gpmc_enable_hwecc(int cs, int mode, int dev_width, int ecc_size);
int gpmc_calculate_ecc(int cs, const u_char *dat, u_char *ecc_code);
#endif
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