diff options
Diffstat (limited to 'drivers/block/libata.c')
| -rw-r--r-- | drivers/block/libata.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/block/libata.c b/drivers/block/libata.c new file mode 100644 index 0000000..bbe16a2 --- /dev/null +++ b/drivers/block/libata.c @@ -0,0 +1,158 @@ +/* + * Copyright (C) 2008 Freescale Semiconductor, Inc. + * Dave Liu <daveliu@freescale.com> + * port from the libata of linux kernel + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + */ + +#include <libata.h> + +u64 ata_id_n_sectors(u16 *id) +{ + if (ata_id_has_lba(id)) { + if (ata_id_has_lba48(id)) + return ata_id_u64(id, ATA_ID_LBA48_SECTORS); + else + return ata_id_u32(id, ATA_ID_LBA_SECTORS); + } else { + return 0; + } +} + +u32 ata_dev_classify(u32 sig) +{ + u8 lbam, lbah; + + lbam = (sig >> 16) & 0xff; + lbah = (sig >> 24) & 0xff; + + if (((lbam == 0) && (lbah == 0)) || + ((lbam == 0x3c) && (lbah == 0xc3))) + return ATA_DEV_ATA; + + if ((lbam == 0x14) && (lbah == 0xeb)) + return ATA_DEV_ATAPI; + + if ((lbam == 0x69) && (lbah == 0x96)) + return ATA_DEV_PMP; + + return ATA_DEV_UNKNOWN; +} + +static void ata_id_string(const u16 *id, unsigned char *s, + unsigned int ofs, unsigned int len) +{ + unsigned int c; + + while (len > 0) { + c = id[ofs] >> 8; + *s = c; + s++; + + c = id[ofs] & 0xff; + *s = c; + s++; + + ofs++; + len -= 2; + } +} + +void ata_id_c_string(const u16 *id, unsigned char *s, + unsigned int ofs, unsigned int len) +{ + unsigned char *p; + + ata_id_string(id, s, ofs, len - 1); + + p = s + strnlen((char *)s, len - 1); + while (p > s && p[-1] == ' ') + p--; + *p = '\0'; +} + +void ata_dump_id(u16 *id) +{ + unsigned char serial[ATA_ID_SERNO_LEN + 1]; + unsigned char firmware[ATA_ID_FW_REV_LEN + 1]; + unsigned char product[ATA_ID_PROD_LEN + 1]; + u64 n_sectors; + + /* Serial number */ + ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial)); + printf("S/N: %s\n\r", serial); + + /* Firmware version */ + ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware)); + printf("Firmware version: %s\n\r", firmware); + + /* Product model */ + ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product)); + printf("Product model number: %s\n\r", product); + + /* Total sectors of device */ + n_sectors = ata_id_n_sectors(id); + printf("Capablity: %d sectors\n\r", n_sectors); + + printf ("id[49]: capabilities ==0x%04x\n" + "id[53]: field valid ==0x%04x\n" + "id[63]: mwdma ==0x%04x\n" + "id[64]: pio ==0x%04x\n" + "id[75]: queue depth ==0x%04x\n", + id[49], + id[53], + id[63], + id[64], + id[75]); + + printf ("id[76]: sata capablity ==0x%04x\n" + "id[78]: sata features supported ==0x%04x\n" + "id[79]: sata features enable ==0x%04x\n", + id[76], + id[78], + id[79]); + + printf ("id[80]: major version ==0x%04x\n" + "id[81]: minor version ==0x%04x\n" + "id[82]: command set supported 1 ==0x%04x\n" + "id[83]: command set supported 2 ==0x%04x\n" + "id[84]: command set extension ==0x%04x\n", + id[80], + id[81], + id[82], + id[83], + id[84]); + printf ("id[85]: command set enable 1 ==0x%04x\n" + "id[86]: command set enable 2 ==0x%04x\n" + "id[87]: command set default ==0x%04x\n" + "id[88]: udma ==0x%04x\n" + "id[93]: hardware reset result ==0x%04x\n", + id[85], + id[86], + id[87], + id[88], + id[93]); +} + +void ata_swap_buf_le16(u16 *buf, unsigned int buf_words) +{ + unsigned int i; + + for (i = 0; i < buf_words; i++) + buf[i] = le16_to_cpu(buf[i]); +} |