drivers/block/libata.c

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