scsi/isci/scu_task_context.h

7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
20  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
26  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
60  * This file contains the structures and constants for the SCU hardware task
68  * enum scu_ssp_task_type - This enumberation defines the various SSP task
69  *    types the SCU hardware will accept. The definition for the various task
70  *    types the SCU hardware will accept can be found in the DS specification.
84  * enum scu_sata_task_type - This enumeration defines the various SATA task
85  *    types the SCU hardware will accept. The definition for the various task
86  *    types the SCU hardware will accept can be found in the DS specification.
187  * operations to construct the various SCU commands
222  * MAKE_SCU_CONTEXT_COMMAND_TYPE() -
224  * SCU_COMMAND_TYPES These constants provide the grouping of the different SCU
240  * posted to the SCU hardware.
284  * SCU_TASK_CONTEXT_PROTOCOL SCU Task context protocol types this is uesd to
285  * program the SCU Task context protocol field in word 0x00.
293  * struct ssp_task_context - This is the SCU hardware definition for an SSP
327  * struct stp_task_context - This is the SCU hardware definition for an STP
359  * struct smp_task_context - This is the SCU hardware definition for an SMP
389  * struct primitive_task_context - This is the SCU hardware definition used
421  * The union of the protocols that can be selected in the SCU task context
435  * struct scu_sgl_element - This structure represents a single SCU defined SGL
436  *    element. SCU SGLs contain a 64 bit address with the maximum data transfer
469  * struct scu_sgl_element_pair - This structure is the SCU hardware definition
470  *    of a pair of SGL elements. The SCU hardware always works on SGL pairs.
477 	/* OFFSET 0x60-0x68 */
483 	/* OFFSET 0x6C-0x74 */
489 	/* OFFSET 0x78-0x7C */
505  * struct transport_snapshot - This structure is the SCU hardware scratch area
507  *    issuing a dump TC request to the SCU.
531  * struct scu_task_context - This structure defines the contents of the SCU
538 	/* OFFSET 0x00 ------ */
540 	 * This field must be encoded to one of the valid SCU task priority values
541 	 *    - SCU_TASK_PRIORITY_NORMAL
542 	 *    - SCU_TASK_PRIORITY_HEAD_OF_Q
543 	 *    - SCU_TASK_PRIORITY_HIGH
572 	 *    - SCU_TASK_CONTEXT_PROTOCOL_SMP
573 	 *    - SCU_TASK_CONTEXT_PROTOCOL_SSP
574 	 *    - SCU_TASK_CONTEXT_PROTOCOL_STP
575 	 *    - SCU_TASK_CONTEXT_PROTOCOL_NONE
596 	 * This field must be set to true for the SCU hardware to process the task.
619 	 *    - SCU_SATA_WRITE_DATA_DIRECTION
620 	 *    - SCU_SATA_READ_DATA_DIRECTION
626 	 *    - SCU_COMMAND_CODE_INITIATOR_NEW_TASK
627 	 *    - SCU_COMMAND_CODE_ACTIVE_TASK
628 	 *    - SCU_COMMAND_CODE_PRIMITIVE_SEQ_TASK
629 	 *    - SCU_COMMAND_CODE_TARGET_RAW_FRAMES
643 	 *    - SCU_TASK_TYPE_IOREAD
644 	 *    - SCU_TASK_TYPE_IOWRITE
645 	 *    - SCU_TASK_TYPE_SMP_REQUEST
646 	 *    - SCU_TASK_TYPE_RESPONSE
647 	 *    - SCU_TASK_TYPE_RAW_FRAME
648 	 *    - SCU_TASK_TYPE_PRIMITIVE
651 	 *    - SCU_TASK_TYPE_DMA_IN
652 	 *    - SCU_TASK_TYPE_FPDMAQ_READ
653 	 *    - SCU_TASK_TYPE_PACKET_DMA_IN
654 	 *    - SCU_TASK_TYPE_SATA_RAW_FRAME
655 	 *    - SCU_TASK_TYPE_DMA_OUT
656 	 *    - SCU_TASK_TYPE_FPDMAQ_WRITE
657 	 *    - SCU_TASK_TYPE_PACKET_DMA_OUT
673 	 * This is field specifies if the SCU DMAs a response frame to host
679 	 * This field indicates if the SCU should DMA the response frame to
702 	 * This field is set to true when the SCU hardware task timeout control is to
732 	u32 mirrored_protocol_engine:3;  /* mirrored protocol Engine Index */
735 	 * If this is a mirrored request the logical port index for the mirrored RNi
738 	u32 mirrored_logical_port:4;  /* mirrored local port index */
769 	 * This is the maximum burst size that the SCU hardware will send in one
786 	/* OFFSET 0x18-0x2C */
788 	 * This union provides for the protocol specif part of the SCU Task Context.
792 	/* OFFSET 0x30-0x34 */
805 	/* OFFSET 0x38-0x3C */
820 	 * This field is set to the task phase of the SCU hardware. The driver must
837 	 * This field is set the maximum number of retries for a STP non-data FIS
847 	 * This field is used by the SCU TL to determine when to take a snapshot when
849 	 *    - 0x00 The entire IO
850 	 *    - 0x01 32k
851 	 *    - 0x02 64k
852 	 *    - 0x04 128k
853 	 *    - 0x08 256k
865 	/* OFFSET 0x48-0x58 */
878 	/* OFFSET 0x60-0x7C */
883 	/* OFFSET 0x80-0x9C */
889 	/* OFFSET 0xA0-BC */
895 	/* OFFSET 0xC4-0xCC */