1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * (C) Copyright 2010-2011 Texas Instruments, <www.ti.com> 3*4882a593Smuzhiyun * Mansoor Ahamed <mansoor.ahamed@ti.com> 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Derived from work done by Rohit Choraria <rohitkc@ti.com> for omap3 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun #ifndef __ASM_ARCH_ELM_H 10*4882a593Smuzhiyun #define __ASM_ARCH_ELM_H 11*4882a593Smuzhiyun /* 12*4882a593Smuzhiyun * ELM Module Registers 13*4882a593Smuzhiyun */ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun /* ELM registers bit fields */ 16*4882a593Smuzhiyun #define ELM_SYSCONFIG_SOFTRESET_MASK (0x2) 17*4882a593Smuzhiyun #define ELM_SYSCONFIG_SOFTRESET (0x2) 18*4882a593Smuzhiyun #define ELM_SYSSTATUS_RESETDONE_MASK (0x1) 19*4882a593Smuzhiyun #define ELM_SYSSTATUS_RESETDONE (0x1) 20*4882a593Smuzhiyun #define ELM_LOCATION_CONFIG_ECC_BCH_LEVEL_MASK (0x3) 21*4882a593Smuzhiyun #define ELM_LOCATION_CONFIG_ECC_SIZE_MASK (0x7FF0000) 22*4882a593Smuzhiyun #define ELM_LOCATION_CONFIG_ECC_SIZE_POS (16) 23*4882a593Smuzhiyun #define ELM_SYNDROME_FRAGMENT_6_SYNDROME_VALID (0x00010000) 24*4882a593Smuzhiyun #define ELM_LOCATION_STATUS_ECC_CORRECTABLE_MASK (0x100) 25*4882a593Smuzhiyun #define ELM_LOCATION_STATUS_ECC_NB_ERRORS_MASK (0x1F) 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #define ELM_MAX_CHANNELS 8 28*4882a593Smuzhiyun #define ELM_MAX_ERROR_COUNT 16 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun enum bch_level { 33*4882a593Smuzhiyun BCH_4_BIT = 0, 34*4882a593Smuzhiyun BCH_8_BIT, 35*4882a593Smuzhiyun BCH_16_BIT 36*4882a593Smuzhiyun }; 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun /* BCH syndrome registers */ 40*4882a593Smuzhiyun struct syndrome { 41*4882a593Smuzhiyun u32 syndrome_fragment_x[7]; /* 0x400, 0x404.... 0x418 */ 42*4882a593Smuzhiyun u8 res1[36]; /* 0x41c */ 43*4882a593Smuzhiyun }; 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun /* BCH error status & location register */ 46*4882a593Smuzhiyun struct location { 47*4882a593Smuzhiyun u32 location_status; /* 0x800 */ 48*4882a593Smuzhiyun u8 res1[124]; /* 0x804 */ 49*4882a593Smuzhiyun u32 error_location_x[ELM_MAX_ERROR_COUNT]; /* 0x880, 0x980, .. */ 50*4882a593Smuzhiyun u8 res2[64]; /* 0x8c0 */ 51*4882a593Smuzhiyun }; 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun /* BCH ELM register map - do not try to allocate memmory for this structure. 54*4882a593Smuzhiyun * We have used plenty of reserved variables to fill the slots in the ELM 55*4882a593Smuzhiyun * register memory map. 56*4882a593Smuzhiyun * Directly initialize the struct pointer to ELM base address. 57*4882a593Smuzhiyun */ 58*4882a593Smuzhiyun struct elm { 59*4882a593Smuzhiyun u32 rev; /* 0x000 */ 60*4882a593Smuzhiyun u8 res1[12]; /* 0x004 */ 61*4882a593Smuzhiyun u32 sysconfig; /* 0x010 */ 62*4882a593Smuzhiyun u32 sysstatus; /* 0x014 */ 63*4882a593Smuzhiyun u32 irqstatus; /* 0x018 */ 64*4882a593Smuzhiyun u32 irqenable; /* 0x01c */ 65*4882a593Smuzhiyun u32 location_config; /* 0x020 */ 66*4882a593Smuzhiyun u8 res2[92]; /* 0x024 */ 67*4882a593Smuzhiyun u32 page_ctrl; /* 0x080 */ 68*4882a593Smuzhiyun u8 res3[892]; /* 0x084 */ 69*4882a593Smuzhiyun struct syndrome syndrome_fragments[ELM_MAX_CHANNELS]; /* 0x400,0x420 */ 70*4882a593Smuzhiyun u8 res4[512]; /* 0x600 */ 71*4882a593Smuzhiyun struct location error_location[ELM_MAX_CHANNELS]; /* 0x800,0x900 ... */ 72*4882a593Smuzhiyun }; 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun int elm_check_error(u8 *syndrome, enum bch_level bch_type, u32 *error_count, 75*4882a593Smuzhiyun u32 *error_locations); 76*4882a593Smuzhiyun int elm_config(enum bch_level level); 77*4882a593Smuzhiyun void elm_reset(void); 78*4882a593Smuzhiyun void elm_init(void); 79*4882a593Smuzhiyun #endif /* __ASSEMBLY__ */ 80*4882a593Smuzhiyun #endif /* __ASM_ARCH_ELM_H */ 81