1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2006 Micron Technology Inc. 4 */ 5 6 #ifndef _MTD_NAND_OMAP2_H 7 #define _MTD_NAND_OMAP2_H 8 9 #include <linux/mtd/partitions.h> 10 11 #define GPMC_BCH_NUM_REMAINDER 8 12 13 enum nand_io { 14 NAND_OMAP_PREFETCH_POLLED = 0, /* prefetch polled mode, default */ 15 NAND_OMAP_POLLED, /* polled mode, without prefetch */ 16 NAND_OMAP_PREFETCH_DMA, /* prefetch enabled sDMA mode */ 17 NAND_OMAP_PREFETCH_IRQ /* prefetch enabled irq mode */ 18 }; 19 20 enum omap_ecc { 21 /* 22 * 1-bit ECC: calculation and correction by SW 23 * ECC stored at end of spare area 24 */ 25 OMAP_ECC_HAM1_CODE_SW = 0, 26 27 /* 28 * 1-bit ECC: calculation by GPMC, Error detection by Software 29 * ECC layout compatible with ROM code layout 30 */ 31 OMAP_ECC_HAM1_CODE_HW, 32 /* 4-bit ECC calculation by GPMC, Error detection by Software */ 33 OMAP_ECC_BCH4_CODE_HW_DETECTION_SW, 34 /* 4-bit ECC calculation by GPMC, Error detection by ELM */ 35 OMAP_ECC_BCH4_CODE_HW, 36 /* 8-bit ECC calculation by GPMC, Error detection by Software */ 37 OMAP_ECC_BCH8_CODE_HW_DETECTION_SW, 38 /* 8-bit ECC calculation by GPMC, Error detection by ELM */ 39 OMAP_ECC_BCH8_CODE_HW, 40 /* 16-bit ECC calculation by GPMC, Error detection by ELM */ 41 OMAP_ECC_BCH16_CODE_HW, 42 }; 43 44 struct gpmc_nand_regs { 45 void __iomem *gpmc_nand_command; 46 void __iomem *gpmc_nand_address; 47 void __iomem *gpmc_nand_data; 48 void __iomem *gpmc_prefetch_config1; 49 void __iomem *gpmc_prefetch_config2; 50 void __iomem *gpmc_prefetch_control; 51 void __iomem *gpmc_prefetch_status; 52 void __iomem *gpmc_ecc_config; 53 void __iomem *gpmc_ecc_control; 54 void __iomem *gpmc_ecc_size_config; 55 void __iomem *gpmc_ecc1_result; 56 void __iomem *gpmc_bch_result0[GPMC_BCH_NUM_REMAINDER]; 57 void __iomem *gpmc_bch_result1[GPMC_BCH_NUM_REMAINDER]; 58 void __iomem *gpmc_bch_result2[GPMC_BCH_NUM_REMAINDER]; 59 void __iomem *gpmc_bch_result3[GPMC_BCH_NUM_REMAINDER]; 60 void __iomem *gpmc_bch_result4[GPMC_BCH_NUM_REMAINDER]; 61 void __iomem *gpmc_bch_result5[GPMC_BCH_NUM_REMAINDER]; 62 void __iomem *gpmc_bch_result6[GPMC_BCH_NUM_REMAINDER]; 63 }; 64 #endif 65