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53 #include <sys/cdefs.h>
54 __FBSDID("$FreeBSD$");
58 * @brief This file contains the method implementations required to
59 * translate the SCSI read (6, 10, 12, or 16-byte) commands.
62 #include <dev/isci/scil/sati_move.h>
63 #include <dev/isci/scil/sati_read.h>
64 #include <dev/isci/scil/sati_callbacks.h>
65 #include <dev/isci/scil/sati_util.h>
67 #include <dev/isci/scil/intel_ata.h>
68 #include <dev/isci/scil/intel_scsi.h>
70 //******************************************************************************
71 //* P R I V A T E M E T H O D S
72 //******************************************************************************
75 * @brief This method performs the common translation functionality for
76 * all SCSI read operations that are 10 bytes in size or larger.
77 * Translated/Written items include:
78 * - Force Unit Access (FUA)
79 * - Sector Count/Transfer Length
82 * @param[in] sector_count This parameter specifies the number of sectors
83 * to be transferred by this request.
84 * @param[in] device_head This parameter points to device head register
85 * that is to be written into the ATA task file (register FIS).
87 * @return Indicate if the command translation succeeded.
88 * @see sati_move_set_sector_count() for additional return values.
91 SATI_STATUS sati_read_large_translate_command(
92 SATI_TRANSLATOR_SEQUENCE_T * sequence,
99 sequence->data_direction = SATI_DATA_DIRECTION_IN;
101 return sati_move_large_translate_command(
111 * @brief This method performs the common translation functionality for
112 * all SCSI read operations containing a 32-bit logical block
114 * Translated/Written items include:
115 * - Logical Block Address (LBA)
116 * - Force Unit Access (FUA)
117 * - Sector Count/Transfer Length
119 * For more information on the parameters passed to this method,
120 * please reference sati_translate_command().
122 * @param[in] sector_count This parameter specifies the number of sectors
123 * to be transferred by this request.
124 * @param[in] control_byte_offset This parameter specifies the byte offset
125 * into the command descriptor block at which the control byte
128 * @return Indicate if the command translation succeeded.
129 * @see sati_move_32_bit_lba_translate_command(), sati_move_set_sector_count()
130 * for additional return values.
133 SATI_STATUS sati_read_32_bit_lba_translate_command(
134 SATI_TRANSLATOR_SEQUENCE_T * sequence,
138 U8 control_byte_offset
144 status = sati_read_large_translate_command(
145 sequence, scsi_io, ata_io, sector_count, &device_head
148 if (status == SATI_SUCCESS)
150 status = sati_move_32_bit_lba_translate_command(
151 sequence, scsi_io, ata_io, device_head
158 //******************************************************************************
159 //* P U B L I C M E T H O D S
160 //******************************************************************************
163 * @brief This method will translate the SCSI read command into a
164 * corresponding ATA read 6 command. Depending upon the capabilities
165 * supported by the target different ATA commands can be selected.
166 * For more information on the parameters passed to this method,
167 * please reference sati_translate_command().
169 * @return Indicate if the command translation succeeded.
170 * @retval SCI_SUCCESS This is returned if the command translation was
172 * @retval SATI_FAILURE_CHECK_RESPONSE_DATA This value is returned if
173 * sense data has been created as a result of something specified
176 SATI_STATUS sati_read_6_translate_command(
177 SATI_TRANSLATOR_SEQUENCE_T * sequence,
182 if(sati_device_state_stopped(sequence, scsi_io))
184 return SATI_FAILURE_CHECK_RESPONSE_DATA;
188 sequence->data_direction = SATI_DATA_DIRECTION_IN;
189 sequence->type = SATI_SEQUENCE_READ_6;
191 return sati_move_small_translate_command(sequence, scsi_io, ata_io);
196 * @brief This method will translate the SCSI read 10 command into a
197 * corresponding ATA read command. Depending upon the capabilities
198 * supported by the target different ATA commands can be selected.
199 * It ensures that all translation required for this command is
200 * performed successfully.
201 * For more information on the parameters passed to this method,
202 * please reference sati_translate_command().
204 * @return Indicate if the command translation succeeded.
205 * @see sati_read_32_bit_lba_translate_command() for return values.
207 SATI_STATUS sati_read_10_translate_command(
208 SATI_TRANSLATOR_SEQUENCE_T * sequence,
214 U8 * cdb = sati_cb_get_cdb_address(scsi_io);
216 U32 sector_count = (sati_get_cdb_byte(cdb, 7) << 8) |
217 (sati_get_cdb_byte(cdb, 8));
219 if(sati_device_state_stopped(sequence, scsi_io))
221 return SATI_FAILURE_CHECK_RESPONSE_DATA;
225 sequence->type = SATI_SEQUENCE_READ_10;
227 return sati_read_32_bit_lba_translate_command(
228 sequence, scsi_io, ata_io, sector_count, 9
234 * @brief This method will translate the SCSI read 12 command into a
235 * corresponding ATA read command. Depending upon the capabilities
236 * supported by the target different ATA commands can be selected.
237 * It ensures that all translation required for this command is
238 * performed successfully.
239 * For more information on the parameters passed to this method,
240 * please reference sati_translate_command().
242 * @return Indicate if the command translation succeeded.
243 * @see sati_read_32_bit_lba_translate_command() for return values.
245 SATI_STATUS sati_read_12_translate_command(
246 SATI_TRANSLATOR_SEQUENCE_T * sequence,
251 U8 * cdb = sati_cb_get_cdb_address(scsi_io);
252 U32 sector_count = (sati_get_cdb_byte(cdb, 6) << 24) |
253 (sati_get_cdb_byte(cdb, 7) << 16) |
254 (sati_get_cdb_byte(cdb, 8) << 8) |
255 (sati_get_cdb_byte(cdb, 9));
257 if(sati_device_state_stopped(sequence, scsi_io))
259 return SATI_FAILURE_CHECK_RESPONSE_DATA;
263 sequence->type = SATI_SEQUENCE_READ_12;
265 return sati_read_32_bit_lba_translate_command(
266 sequence, scsi_io, ata_io, sector_count, 11
272 * @brief This method will translate the SCSI read 16 command into a
273 * corresponding ATA read command. Depending upon the capabilities
274 * supported by the target different ATA commands can be selected.
275 * It ensures that all translation required for this command is
276 * performed successfully.
277 * For more information on the parameters passed to this method,
278 * please reference sati_translate_command().
280 * @return Indicate if the command translation succeeded.
281 * @see sati_read_large_translate_command(), sati_move_translate_64_bit_lba()
282 * for additional return values.
284 SATI_STATUS sati_read_16_translate_command(
285 SATI_TRANSLATOR_SEQUENCE_T * sequence,
292 U8 * cdb = sati_cb_get_cdb_address(scsi_io);
293 U32 sector_count = (sati_get_cdb_byte(cdb, 10) << 24) |
294 (sati_get_cdb_byte(cdb, 11) << 16) |
295 (sati_get_cdb_byte(cdb, 12) << 8) |
296 (sati_get_cdb_byte(cdb, 13));
298 if(sati_device_state_stopped(sequence, scsi_io))
300 return SATI_FAILURE_CHECK_RESPONSE_DATA;
304 sequence->type = SATI_SEQUENCE_READ_16;
306 // Translate the sector count, write command register, and check various
307 // other parts of the CDB.
308 status = sati_read_large_translate_command(
309 sequence, scsi_io, ata_io, sector_count, &device_head
312 // Attempt to translate the 64-bit LBA field from the SCSI request
313 // into the 48-bits of LBA in the ATA register FIS.
314 if (status == SATI_SUCCESS)
316 sati_move_translate_command(sequence, scsi_io, ata_io, device_head);
317 status = sati_move_translate_64_bit_lba(sequence, scsi_io, ata_io);