1 /* 2 * Copyright (C) 2008 Freescale Semiconductor, Inc. 3 * Dave Liu <daveliu@freescale.com> 4 * port from libata of linux kernel 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 19 * MA 02111-1307 USA 20 * 21 */ 22 23 #ifndef __LIBATA_H__ 24 #define __LIBATA_H__ 25 26 #include <common.h> 27 28 /* command 29 */ 30 enum ata_cmd { 31 /* non-NCQ command */ 32 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */ 33 ATA_CMD_FLUSH_CACHE = 0xE7, 34 ATA_CMD_FLUSH_CACHE_EXT = 0xEA, 35 ATA_CMD_ID_ATA = 0xEC, 36 ATA_CMD_ID_ATAPI = 0xA1, 37 ATA_CMD_READ_DMA = 0xC8, 38 ATA_CMD_READ_DMA_EXT = 0x25, 39 ATA_CMD_WRITE_DMA = 0xCA, 40 ATA_CMD_WRITE_DMA_EXT = 0x35, 41 ATA_CMD_PIO_READ = 0x20, 42 ATA_CMD_PIO_READ_EXT = 0x24, 43 ATA_CMD_PIO_WRITE = 0x30, 44 ATA_CMD_PIO_WRITE_EXT = 0x34, 45 ATA_CMD_SET_FEATURES = 0xEF, 46 47 /* NCQ command */ 48 ATA_CMD_READ_FPDMA_QUEUED = 0x60, 49 ATA_CMD_WRITE_FPDMA_QUEUED = 0x61, 50 }; 51 52 /* SETFEATURES stuff 53 */ 54 enum ata_set_features { 55 /* SETFEATURES stuff */ 56 SETFEATURES_XFER = 0x03, 57 XFER_UDMA_7 = 0x47, 58 XFER_UDMA_6 = 0x46, 59 XFER_UDMA_5 = 0x45, 60 XFER_UDMA_4 = 0x44, 61 XFER_UDMA_3 = 0x43, 62 XFER_UDMA_2 = 0x42, 63 XFER_UDMA_1 = 0x41, 64 XFER_UDMA_0 = 0x40, 65 XFER_MW_DMA_4 = 0x24, /* CFA only */ 66 XFER_MW_DMA_3 = 0x23, /* CFA only */ 67 XFER_MW_DMA_2 = 0x22, 68 XFER_MW_DMA_1 = 0x21, 69 XFER_MW_DMA_0 = 0x20, 70 XFER_PIO_6 = 0x0E, /* CFA only */ 71 XFER_PIO_5 = 0x0D, /* CFA only */ 72 XFER_PIO_4 = 0x0C, 73 XFER_PIO_3 = 0x0B, 74 XFER_PIO_2 = 0x0A, 75 XFER_PIO_1 = 0x09, 76 XFER_PIO_0 = 0x08, 77 XFER_PIO_SLOW = 0x00, 78 79 SETFEATURES_WC_ON = 0x02, /* Enable write cache */ 80 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */ 81 82 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */ 83 }; 84 85 enum ata_protocol { 86 ATA_PROT_UNKNOWN, /* unknown */ 87 ATA_PROT_NODATA, /* no data */ 88 ATA_PROT_PIO, /* PIO data xfer */ 89 ATA_PROT_DMA, /* DMA */ 90 ATA_PROT_NCQ, /* NCQ */ 91 ATA_PROT_ATAPI, /* packet command, PIO data xfer */ 92 ATA_PROT_ATAPI_NODATA, /* packet command, no data */ 93 ATA_PROT_ATAPI_DMA, /* packet command, DMA */ 94 }; 95 96 enum ata_dev_typed { 97 ATA_DEV_ATA, /* ATA device */ 98 ATA_DEV_ATAPI, /* ATAPI device */ 99 ATA_DEV_PMP, /* Port Multiplier Port */ 100 ATA_DEV_UNKNOWN, /* unknown */ 101 }; 102 103 enum { 104 ATA_SECT_SIZE = 512, 105 ATA_MAX_SECTORS_128 = 128, 106 ATA_MAX_SECTORS = 256, 107 ATA_MAX_SECTORS_LBA48 = 65535, 108 109 /* bits in ATA command block registers */ 110 ATA_HOB = (1 << 7), /* LBA48 selector */ 111 ATA_NIEN = (1 << 1), /* disable-irq flag */ 112 ATA_LBA = (1 << 6), /* LBA28 selector */ 113 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ 114 ATA_BUSY = (1 << 7), /* BSY status bit */ 115 ATA_DRDY = (1 << 6), /* device ready */ 116 ATA_DF = (1 << 5), /* device fault */ 117 ATA_DRQ = (1 << 3), /* data request i/o */ 118 ATA_ERR = (1 << 0), /* have an error */ 119 ATA_SRST = (1 << 2), /* software reset */ 120 ATA_ICRC = (1 << 7), /* interface CRC error */ 121 ATA_UNC = (1 << 6), /* uncorrectable media error */ 122 ATA_IDNF = (1 << 4), /* ID not found */ 123 ATA_ABORTED = (1 << 2), /* command aborted */ 124 125 ATA_ID_WORDS = 256, 126 ATA_ID_SERNO = 10, 127 ATA_ID_FW_REV = 23, 128 ATA_ID_PROD = 27, 129 ATA_ID_FIELD_VALID = 53, 130 ATA_ID_LBA_SECTORS = 60, 131 ATA_ID_MWDMA_MODES = 63, 132 ATA_ID_PIO_MODES = 64, 133 ATA_ID_QUEUE_DEPTH = 75, 134 ATA_ID_SATA_CAP = 76, 135 ATA_ID_SATA_FEATURES = 78, 136 ATA_ID_SATA_FEATURES_EN = 79, 137 ATA_ID_MAJOR_VER = 80, 138 ATA_ID_MINOR_VER = 81, 139 ATA_ID_UDMA_MODES = 88, 140 ATA_ID_LBA48_SECTORS = 100, 141 142 ATA_ID_SERNO_LEN = 20, 143 ATA_ID_FW_REV_LEN = 8, 144 ATA_ID_PROD_LEN = 40, 145 146 ATA_PIO3 = (1 << 0), 147 ATA_PIO4 = ATA_PIO3 | (1 << 1), 148 149 ATA_UDMA0 = (1 << 0), 150 ATA_UDMA1 = ATA_UDMA0 | (1 << 1), 151 ATA_UDMA2 = ATA_UDMA1 | (1 << 2), 152 ATA_UDMA3 = ATA_UDMA2 | (1 << 3), 153 ATA_UDMA4 = ATA_UDMA3 | (1 << 4), 154 ATA_UDMA5 = ATA_UDMA4 | (1 << 5), 155 ATA_UDMA6 = ATA_UDMA5 | (1 << 6), 156 ATA_UDMA7 = ATA_UDMA6 | (1 << 7), 157 }; 158 159 #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) 160 #define ata_id_wcache_enabled(id) ((id)[85] & (1 << 5)) 161 #define ata_id_has_fua(id) ((id)[84] & (1 << 6)) 162 #define ata_id_has_flush(id) ((id)[83] & (1 << 12)) 163 #define ata_id_has_flush_ext(id) ((id)[83] & (1 << 13)) 164 #define ata_id_has_lba48(id) ((id)[83] & (1 << 10)) 165 #define ata_id_has_wcache(id) ((id)[82] & (1 << 5)) 166 #define ata_id_has_lba(id) ((id)[49] & (1 << 9)) 167 #define ata_id_has_dma(id) ((id)[49] & (1 << 8)) 168 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) 169 #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) 170 171 #define ata_id_u32(id,n) \ 172 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) 173 #define ata_id_u64(id,n) \ 174 ( ((u64) (id)[(n) + 3] << 48) | \ 175 ((u64) (id)[(n) + 2] << 32) | \ 176 ((u64) (id)[(n) + 1] << 16) | \ 177 ((u64) (id)[(n) + 0]) ) 178 179 180 static inline unsigned int ata_id_major_version(const u16 *id) 181 { 182 unsigned int mver; 183 184 if (id[ATA_ID_MAJOR_VER] == 0xFFFF) 185 return 0; 186 187 for (mver = 14; mver >= 1; mver--) 188 if (id[ATA_ID_MAJOR_VER] & (1 << mver)) 189 break; 190 return mver; 191 } 192 193 static inline int ata_id_is_sata(const u16 *id) 194 { 195 return ata_id_major_version(id) >= 5 && id[93] == 0; 196 } 197 198 u64 ata_id_n_sectors(u16 *id); 199 u32 ata_dev_classify(u32 sig); 200 void ata_id_c_string(const u16 *id, unsigned char *s, 201 unsigned int ofs, unsigned int len); 202 void ata_dump_id(u16 *id); 203 void ata_swap_buf_le16(u16 *buf, unsigned int buf_words); 204 205 #endif /* __LIBATA_H__ */ 206