1*83d290c5STom Rini /* SPDX-License-Identifier: GPL-2.0+ */ 22eda892fSpekon gupta /* 32eda892fSpekon gupta * (C) Copyright 2010-2011 Texas Instruments, <www.ti.com> 42eda892fSpekon gupta * Mansoor Ahamed <mansoor.ahamed@ti.com> 52eda892fSpekon gupta * 62eda892fSpekon gupta * Derived from work done by Rohit Choraria <rohitkc@ti.com> for omap3 72eda892fSpekon gupta */ 82eda892fSpekon gupta #ifndef __ASM_ARCH_ELM_H 92eda892fSpekon gupta #define __ASM_ARCH_ELM_H 102eda892fSpekon gupta /* 112eda892fSpekon gupta * ELM Module Registers 122eda892fSpekon gupta */ 132eda892fSpekon gupta 142eda892fSpekon gupta /* ELM registers bit fields */ 152eda892fSpekon gupta #define ELM_SYSCONFIG_SOFTRESET_MASK (0x2) 162eda892fSpekon gupta #define ELM_SYSCONFIG_SOFTRESET (0x2) 172eda892fSpekon gupta #define ELM_SYSSTATUS_RESETDONE_MASK (0x1) 182eda892fSpekon gupta #define ELM_SYSSTATUS_RESETDONE (0x1) 192eda892fSpekon gupta #define ELM_LOCATION_CONFIG_ECC_BCH_LEVEL_MASK (0x3) 202eda892fSpekon gupta #define ELM_LOCATION_CONFIG_ECC_SIZE_MASK (0x7FF0000) 212eda892fSpekon gupta #define ELM_LOCATION_CONFIG_ECC_SIZE_POS (16) 222eda892fSpekon gupta #define ELM_SYNDROME_FRAGMENT_6_SYNDROME_VALID (0x00010000) 232eda892fSpekon gupta #define ELM_LOCATION_STATUS_ECC_CORRECTABLE_MASK (0x100) 242eda892fSpekon gupta #define ELM_LOCATION_STATUS_ECC_NB_ERRORS_MASK (0x1F) 252eda892fSpekon gupta 260439d752Spekon gupta #define ELM_MAX_CHANNELS 8 270439d752Spekon gupta #define ELM_MAX_ERROR_COUNT 16 280439d752Spekon gupta 292eda892fSpekon gupta #ifndef __ASSEMBLY__ 302eda892fSpekon gupta 312eda892fSpekon gupta enum bch_level { 322eda892fSpekon gupta BCH_4_BIT = 0, 332eda892fSpekon gupta BCH_8_BIT, 342eda892fSpekon gupta BCH_16_BIT 352eda892fSpekon gupta }; 362eda892fSpekon gupta 372eda892fSpekon gupta 382eda892fSpekon gupta /* BCH syndrome registers */ 392eda892fSpekon gupta struct syndrome { 402eda892fSpekon gupta u32 syndrome_fragment_x[7]; /* 0x400, 0x404.... 0x418 */ 412eda892fSpekon gupta u8 res1[36]; /* 0x41c */ 422eda892fSpekon gupta }; 432eda892fSpekon gupta 442eda892fSpekon gupta /* BCH error status & location register */ 452eda892fSpekon gupta struct location { 462eda892fSpekon gupta u32 location_status; /* 0x800 */ 472eda892fSpekon gupta u8 res1[124]; /* 0x804 */ 480439d752Spekon gupta u32 error_location_x[ELM_MAX_ERROR_COUNT]; /* 0x880, 0x980, .. */ 492eda892fSpekon gupta u8 res2[64]; /* 0x8c0 */ 502eda892fSpekon gupta }; 512eda892fSpekon gupta 522eda892fSpekon gupta /* BCH ELM register map - do not try to allocate memmory for this structure. 532eda892fSpekon gupta * We have used plenty of reserved variables to fill the slots in the ELM 542eda892fSpekon gupta * register memory map. 552eda892fSpekon gupta * Directly initialize the struct pointer to ELM base address. 562eda892fSpekon gupta */ 572eda892fSpekon gupta struct elm { 582eda892fSpekon gupta u32 rev; /* 0x000 */ 592eda892fSpekon gupta u8 res1[12]; /* 0x004 */ 602eda892fSpekon gupta u32 sysconfig; /* 0x010 */ 612eda892fSpekon gupta u32 sysstatus; /* 0x014 */ 622eda892fSpekon gupta u32 irqstatus; /* 0x018 */ 632eda892fSpekon gupta u32 irqenable; /* 0x01c */ 642eda892fSpekon gupta u32 location_config; /* 0x020 */ 652eda892fSpekon gupta u8 res2[92]; /* 0x024 */ 662eda892fSpekon gupta u32 page_ctrl; /* 0x080 */ 672eda892fSpekon gupta u8 res3[892]; /* 0x084 */ 680439d752Spekon gupta struct syndrome syndrome_fragments[ELM_MAX_CHANNELS]; /* 0x400,0x420 */ 692eda892fSpekon gupta u8 res4[512]; /* 0x600 */ 700439d752Spekon gupta struct location error_location[ELM_MAX_CHANNELS]; /* 0x800,0x900 ... */ 712eda892fSpekon gupta }; 722eda892fSpekon gupta 7341bbe4ddSpekon gupta int elm_check_error(u8 *syndrome, enum bch_level bch_type, u32 *error_count, 742eda892fSpekon gupta u32 *error_locations); 752eda892fSpekon gupta int elm_config(enum bch_level level); 762eda892fSpekon gupta void elm_reset(void); 772eda892fSpekon gupta void elm_init(void); 782eda892fSpekon gupta #endif /* __ASSEMBLY__ */ 792eda892fSpekon gupta #endif /* __ASM_ARCH_ELM_H */ 80