FreeBSD/sys/dev/isci/scil/sati_read_capacity.c
/**
 * @brief This method will translate the ATA Identify Device data into
 *        SCSI read capacity 16 data.
 *        For more information on the parameters passed to this method,
 *        please reference sati_translate_data().
 *
 * @return none
 */
@brief This method will translate the ATA Identify Device data into
SCSI read capacity 16 data.
For more information on the parameters passed to this method,
please reference sati_translate_data().

@return none
@brief This method will translate the ATA Identify Device data into SCSI read capacity 16 data . For more information on the parameters passed to this method please reference sati_translate_data () . @return none
void sati_read_capacity_16_translate_data(
   SATI_TRANSLATOR_SEQUENCE_T * sequence,
   void                       * ata_input_data,
   void                       * scsi_io
)
{
   U32  lba_low     = 0;
   U32  lba_high    = 0;
   U32  sector_size = 0;
   ATA_IDENTIFY_DEVICE_DATA_T * identify_device_data;
   U16  physical_per_logical_enable_bit = 0;
   U8   physical_per_logical_sector_exponent = 0;
   U16  physical_per_logical_sector = 0;
   U16  logical_sector_alignment = 0;
   U16  scsi_logical_sector_alignment = 0;
   U8   byte14 = 0;
   identify_device_data = (ATA_IDENTIFY_DEVICE_DATA_T*)ata_input_data;
   sati_ata_identify_device_get_sector_info(
      (ATA_IDENTIFY_DEVICE_DATA_T*)ata_input_data,
      &lba_high,
      &lba_low,
      &sector_size
   );
   if ((lba_low == 0) && (lba_high == 0))
      lba_high -= 1;
   lba_low -= 1;
   sati_set_data_byte(sequence, scsi_io, 0, (U8)((lba_high >> 24) & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 1, (U8)((lba_high >> 16) & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 2, (U8)((lba_high >> 8)  & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 3, (U8)(lba_high & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 4, (U8)((lba_low >> 24) & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 5, (U8)((lba_low >> 16) & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 6, (U8)((lba_low >> 8)  & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 7, (U8)(lba_low & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 8,  (U8)((sector_size >> 24) & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 9,  (U8)((sector_size >> 16) & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 10, (U8)((sector_size >> 8)  & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 11, (U8)(sector_size & 0xFF));
   sati_set_data_byte(sequence, scsi_io, 12, 0);
   physical_per_logical_enable_bit = (identify_device_data->physical_logical_sector_info
      & ATA_IDENTIFY_LOGICAL_SECTOR_PER_PHYSICAL_SECTOR_ENABLE);
   physical_per_logical_sector_exponent = (U8) (identify_device_data->physical_logical_sector_info
      & ATA_IDENTIFY_LOGICAL_SECTOR_PER_PHYSICAL_SECTOR_MASK);
   physical_per_logical_sector = 1 << (physical_per_logical_sector_exponent);
   if (physical_per_logical_enable_bit != 0)
      sati_set_data_byte(
         sequence,
         scsi_io,
         13,
         (U8)(physical_per_logical_sector_exponent & 0xFF)
      );
   else
      sati_set_data_byte(sequence, scsi_io, 13, 0);
   logical_sector_alignment = identify_device_data->logical_sector_alignment;
   if (logical_sector_alignment == 0)
      scsi_logical_sector_alignment = 0;
   else
      scsi_logical_sector_alignment = (physical_per_logical_sector - logical_sector_alignment)
         % physical_per_logical_sector;
   if ((sequence->device->capabilities & SATI_DEVICE_CAP_DSM_TRIM_SUPPORT) &&
       (sequence->device->capabilities & SATI_DEVICE_CAP_DETERMINISTIC_READ_AFTER_TRIM))
   {
      byte14 |= 0x80;
      if (sequence->device->capabilities & SATI_DEVICE_CAP_READ_ZERO_AFTER_TRIM)
          byte14 |= 0x40;
   }
   sati_set_data_byte(
       sequence,
       scsi_io,
       14,
       (U8)(((scsi_logical_sector_alignment >>8) & 0x3F) | byte14));
   sati_set_data_byte(
       sequence,
       scsi_io,
       15,
       (U8)(scsi_logical_sector_alignment & 0xFF));
}
void sati_read_capacity_16_translate_data ( SATI_TRANSLATOR_SEQUENCE_T * sequence , void * ata_input_data , void * scsi_io ) { U32 lba_low = 0 ; U32 lba_high = 0 ; U32 sector_size = 0 ; ATA_IDENTIFY_DEVICE_DATA_T * identify_device_data ; U16 physical_per_logical_enable_bit = 0 ; U8 physical_per_logical_sector_exponent = 0 ; U16 physical_per_logical_sector = 0 ; U16 logical_sector_alignment = 0 ; U16 scsi_logical_sector_alignment = 0 ; U8 byte14 = 0 ; identify_device_data = ( ATA_IDENTIFY_DEVICE_DATA_T * ) ata_input_data ; sati_ata_identify_device_get_sector_info ( ( ATA_IDENTIFY_DEVICE_DATA_T * ) ata_input_data , & lba_high , & lba_low , & sector_size ) ; if ( ( lba_low == 0 ) && ( lba_high == 0 ) ) lba_high -= 1 ; lba_low -= 1 ; sati_set_data_byte ( sequence , scsi_io , 0 , ( U8 ) ( ( lba_high >> 24 ) & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 1 , ( U8 ) ( ( lba_high >> 16 ) & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 2 , ( U8 ) ( ( lba_high >> 8 ) & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 3 , ( U8 ) ( lba_high & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 4 , ( U8 ) ( ( lba_low >> 24 ) & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 5 , ( U8 ) ( ( lba_low >> 16 ) & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 6 , ( U8 ) ( ( lba_low >> 8 ) & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 7 , ( U8 ) ( lba_low & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 8 , ( U8 ) ( ( sector_size >> 24 ) & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 9 , ( U8 ) ( ( sector_size >> 16 ) & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 10 , ( U8 ) ( ( sector_size >> 8 ) & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 11 , ( U8 ) ( sector_size & 0xFF ) ) ; sati_set_data_byte ( sequence , scsi_io , 12 , 0 ) ; physical_per_logical_enable_bit = ( identify_device_data -> physical_logical_sector_info & ATA_IDENTIFY_LOGICAL_SECTOR_PER_PHYSICAL_SECTOR_ENABLE ) ; physical_per_logical_sector_exponent = ( U8 ) ( identify_device_data -> physical_logical_sector_info & ATA_IDENTIFY_LOGICAL_SECTOR_PER_PHYSICAL_SECTOR_MASK ) ; physical_per_logical_sector = 1 << ( physical_per_logical_sector_exponent ) ; if ( physical_per_logical_enable_bit != 0 ) sati_set_data_byte ( sequence , scsi_io , 13 , ( U8 ) ( physical_per_logical_sector_exponent & 0xFF ) ) ; else sati_set_data_byte ( sequence , scsi_io , 13 , 0 ) ; logical_sector_alignment = identify_device_data -> logical_sector_alignment ; if ( logical_sector_alignment == 0 ) scsi_logical_sector_alignment = 0 ; else scsi_logical_sector_alignment = ( physical_per_logical_sector - logical_sector_alignment ) % physical_per_logical_sector ; if ( ( sequence -> device -> capabilities & SATI_DEVICE_CAP_DSM_TRIM_SUPPORT ) && ( sequence -> device -> capabilities & SATI_DEVICE_CAP_DETERMINISTIC_READ_AFTER_TRIM ) ) { byte14 |= 0x80 ; if ( sequence -> device -> capabilities & SATI_DEVICE_CAP_READ_ZERO_AFTER_TRIM ) byte14 |= 0x40 ; } sati_set_data_byte ( sequence , scsi_io , 14 , ( U8 ) ( ( ( scsi_logical_sector_alignment >> 8 ) & 0x3F ) | byte14 ) ) ; sati_set_data_byte ( sequence , scsi_io , 15 , ( U8 ) ( scsi_logical_sector_alignment & 0xFF ) ) ; }
@brief This method will translate the ATA Identify Device data into
        SCSI read capacity 16 data.
@brief This method will translate the ATA Identify Device data into SCSI read capacity 16 data .
//A number of data fields need to be extracted from ATA identify device data // Extract the sector information (sector size, logical blocks) from // the retrieved ATA identify device data. // SATA drives report a value that is one LBA larger than the last LBA. // SCSI wants the last LBA.  Make the correction here.  lba_low is // always decremented since it is an unsigned long the value 0 will // wrap to 0xFFFFFFFF. // Build the CDB for Read Capacity 16 // Fill in the Logical Block Address bytes. //Fill in the sector size field. //Explicitly set byte 12 to 0.  SATI requires that all bytes in the data //response be explicitly set to some value. //Check Bit 13 of ATA_IDENTIFY_DEVICE_DATA physical_logical_sector_info //(Word 106) is enabled //Extract the Physical per logical sector exponent field and calculate //Physical per logical sector value //If the data is valid, fill in the logical blocks per physical block exponent field. //Else set logical blocks per physical block exponent to 1 //Fill in the lowest aligned logical block address field. //Follow SAT for reporting tprz and tpe // tpe // tprz