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  * 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 #include <libata.h>
  24
  25 u64 ata_id_n_sectors(u16 *id)
  26 {
  27         if (ata_id_has_lba(id)) {
  28                 if (ata_id_has_lba48(id))
  29                         return ata_id_u64(id, ATA_ID_LBA48_SECTORS);
  30                 else
  31                         return ata_id_u32(id, ATA_ID_LBA_SECTORS);
  32         } else {
  33                 return 0;
  34         }
  35 }
  36
  37 u32 ata_dev_classify(u32 sig)
  38 {
  39         u8 lbam, lbah;
  40
  41         lbam = (sig >> 16) & 0xff;
  42         lbah = (sig >> 24) & 0xff;
  43
  44         if (((lbam == 0) && (lbah == 0)) ||
  45                 ((lbam == 0x3c) && (lbah == 0xc3)))
  46                 return ATA_DEV_ATA;
  47
  48         if ((lbam == 0x14) && (lbah == 0xeb))
  49                 return ATA_DEV_ATAPI;
  50
  51         if ((lbam == 0x69) && (lbah == 0x96))
  52                 return ATA_DEV_PMP;
  53
  54         return ATA_DEV_UNKNOWN;
  55 }
  56
  57 static void ata_id_string(const u16 *id, unsigned char *s,
  58                          unsigned int ofs, unsigned int len)
  59 {
  60         unsigned int c;
  61
  62         while (len > 0) {
  63                 c = id[ofs] >> 8;
  64                 *s = c;
  65                 s++;
  66
  67                 c = id[ofs] & 0xff;
  68                 *s = c;
  69                 s++;
  70
  71                 ofs++;
  72                 len -= 2;
  73         }
  74 }
  75
  76 void ata_id_c_string(const u16 *id, unsigned char *s,
  77                          unsigned int ofs, unsigned int len)
  78 {
  79         unsigned char *p;
  80
  81         ata_id_string(id, s, ofs, len - 1);
  82
  83         p = s + strnlen((char *)s, len - 1);
  84         while (p > s && p[-1] == ' ')
  85                 p--;
  86         *p = '\0';
  87 }
  88
  89 void ata_dump_id(u16 *id)
  90 {
  91         unsigned char serial[ATA_ID_SERNO_LEN + 1];
  92         unsigned char firmware[ATA_ID_FW_REV_LEN + 1];
  93         unsigned char product[ATA_ID_PROD_LEN + 1];
  94         u64 n_sectors;
  95
  96         /* Serial number */
  97         ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
  98         printf("S/N: %s\n\r", serial);
  99
 100         /* Firmware version */
 101         ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
 102         printf("Firmware version: %s\n\r", firmware);
 103
 104         /* Product model */
 105         ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
 106         printf("Product model number: %s\n\r", product);
 107
 108         /* Total sectors of device  */
 109         n_sectors = ata_id_n_sectors(id);
 110         printf("Capablity: %d sectors\n\r", n_sectors);
 111
 112         printf ("id[49]: capabilities ==0x%04x\n"
 113                 "id[53]: field valid ==0x%04x\n"
 114                 "id[63]: mwdma ==0x%04x\n"
 115                 "id[64]: pio ==0x%04x\n"
 116                 "id[75]: queue depth ==0x%04x\n",
 117                 id[49],
 118                 id[53],
 119                 id[63],
 120                 id[64],
 121                 id[75]);
 122
 123         printf ("id[76]: sata capablity ==0x%04x\n"
 124                 "id[78]: sata features supported ==0x%04x\n"
 125                 "id[79]: sata features enable ==0x%04x\n",
 126                 id[76],
 127                 id[78],
 128                 id[79]);
 129
 130         printf ("id[80]: major version ==0x%04x\n"
 131                 "id[81]: minor version ==0x%04x\n"
 132                 "id[82]: command set supported 1 ==0x%04x\n"
 133                 "id[83]: command set supported 2 ==0x%04x\n"
 134                 "id[84]: command set extension ==0x%04x\n",
 135                 id[80],
 136                 id[81],
 137                 id[82],
 138                 id[83],
 139                 id[84]);
 140         printf ("id[85]: command set enable 1 ==0x%04x\n"
 141                 "id[86]: command set enable 2 ==0x%04x\n"
 142                 "id[87]: command set default ==0x%04x\n"
 143                 "id[88]: udma ==0x%04x\n"
 144                 "id[93]: hardware reset result ==0x%04x\n",
 145                 id[85],
 146                 id[86],
 147                 id[87],
 148                 id[88],
 149                 id[93]);
 150 }
 151
 152 void ata_swap_buf_le16(u16 *buf, unsigned int buf_words)
 153 {
 154         unsigned int i;
 155
 156         for (i = 0; i < buf_words; i++)
 157                 buf[i] = le16_to_cpu(buf[i]);
 158 }