drivers/ata/libata.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2008 Freescale Semiconductor, Inc.
   4  *              Dave Liu <daveliu@freescale.com>
   5  *              port from the libata of linux kernel
   6  */
   7
   8 #include <common.h>
   9 #include <compiler.h>
  10 #include <libata.h>
  11
  12 u64 ata_id_n_sectors(u16 *id)
  13 {
  14         if (ata_id_has_lba(id)) {
  15                 if (ata_id_has_lba48(id))
  16                         return ata_id_u64(id, ATA_ID_LBA48_SECTORS);
  17                 else
  18                         return ata_id_u32(id, ATA_ID_LBA_SECTORS);
  19         } else {
  20                 return 0;
  21         }
  22 }
  23
  24 u32 ata_dev_classify(u32 sig)
  25 {
  26         u8 lbam, lbah;
  27
  28         lbam = (sig >> 16) & 0xff;
  29         lbah = (sig >> 24) & 0xff;
  30
  31         if (((lbam == 0) && (lbah == 0)) ||
  32                 ((lbam == 0x3c) && (lbah == 0xc3)))
  33                 return ATA_DEV_ATA;
  34
  35         if ((lbam == 0x14) && (lbah == 0xeb))
  36                 return ATA_DEV_ATAPI;
  37
  38         if ((lbam == 0x69) && (lbah == 0x96))
  39                 return ATA_DEV_PMP;
  40
  41         return ATA_DEV_UNKNOWN;
  42 }
  43
  44 static void ata_id_string(const u16 *id, unsigned char *s,
  45                          unsigned int ofs, unsigned int len)
  46 {
  47         unsigned int c;
  48
  49         while (len > 0) {
  50                 c = id[ofs] >> 8;
  51                 *s = c;
  52                 s++;
  53
  54                 c = id[ofs] & 0xff;
  55                 *s = c;
  56                 s++;
  57
  58                 ofs++;
  59                 len -= 2;
  60         }
  61 }
  62
  63 void ata_id_c_string(const u16 *id, unsigned char *s,
  64                          unsigned int ofs, unsigned int len)
  65 {
  66         unsigned char *p;
  67
  68         ata_id_string(id, s, ofs, len - 1);
  69
  70         p = s + strnlen((char *)s, len - 1);
  71         while (p > s && p[-1] == ' ')
  72                 p--;
  73         *p = '\0';
  74 }
  75
  76 void ata_dump_id(u16 *id)
  77 {
  78         unsigned char serial[ATA_ID_SERNO_LEN + 1];
  79         unsigned char firmware[ATA_ID_FW_REV_LEN + 1];
  80         unsigned char product[ATA_ID_PROD_LEN + 1];
  81         u64 n_sectors;
  82
  83         /* Serial number */
  84         ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
  85         printf("S/N: %s\n\r", serial);
  86
  87         /* Firmware version */
  88         ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
  89         printf("Firmware version: %s\n\r", firmware);
  90
  91         /* Product model */
  92         ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
  93         printf("Product model number: %s\n\r", product);
  94
  95         /* Total sectors of device  */
  96         n_sectors = ata_id_n_sectors(id);
  97         printf("Capablity: %lld sectors\n\r", n_sectors);
  98
  99         printf ("id[49]: capabilities = 0x%04x\n"
 100                 "id[53]: field valid = 0x%04x\n"
 101                 "id[63]: mwdma = 0x%04x\n"
 102                 "id[64]: pio = 0x%04x\n"
 103                 "id[75]: queue depth = 0x%04x\n",
 104                 id[49],
 105                 id[53],
 106                 id[63],
 107                 id[64],
 108                 id[75]);
 109
 110         printf ("id[76]: sata capablity = 0x%04x\n"
 111                 "id[78]: sata features supported = 0x%04x\n"
 112                 "id[79]: sata features enable = 0x%04x\n",
 113                 id[76],
 114                 id[78],
 115                 id[79]);
 116
 117         printf ("id[80]: major version = 0x%04x\n"
 118                 "id[81]: minor version = 0x%04x\n"
 119                 "id[82]: command set supported 1 = 0x%04x\n"
 120                 "id[83]: command set supported 2 = 0x%04x\n"
 121                 "id[84]: command set extension = 0x%04x\n",
 122                 id[80],
 123                 id[81],
 124                 id[82],
 125                 id[83],
 126                 id[84]);
 127         printf ("id[85]: command set enable 1 = 0x%04x\n"
 128                 "id[86]: command set enable 2 = 0x%04x\n"
 129                 "id[87]: command set default = 0x%04x\n"
 130                 "id[88]: udma = 0x%04x\n"
 131                 "id[93]: hardware reset result = 0x%04x\n",
 132                 id[85],
 133                 id[86],
 134                 id[87],
 135                 id[88],
 136                 id[93]);
 137 }
 138
 139 void ata_swap_buf_le16(u16 *buf, unsigned int buf_words)
 140 {
 141         unsigned int i;
 142
 143         for (i = 0; i < buf_words; i++)
 144                 buf[i] = le16_to_cpu(buf[i]);
 145 }