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Linux kernel mirror (for testing)
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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
13enum 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
20enum 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
44struct 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