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linux/drivers/scsi/megaraid/megaraid_sas_fusion.h
adam radford 046c9ec259 [SCSI] megaraid_sas: Add 4k FastPath DIF support 
The following patch for megaraid_sas will allow Fastpath T10PI/DIF
frame builds to work with 4k sector size.

Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-02-22 15:25:18 +00:00

706 lines
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/*
* Linux MegaRAID driver for SAS based RAID controllers
*
* Copyright (c) 2009-2012 LSI Corporation.
*
* 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
*
* FILE: megaraid_sas_fusion.h
*
* Authors: LSI Corporation
* Manoj Jose
* Sumant Patro
*
* Send feedback to: <megaraidlinux@lsi.com>
*
* Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
* ATTN: Linuxraid
*/
#ifndef _MEGARAID_SAS_FUSION_H_
#define _MEGARAID_SAS_FUSION_H_
/* Fusion defines */
#define MEGASAS_MAX_SZ_CHAIN_FRAME 1024
#define MFI_FUSION_ENABLE_INTERRUPT_MASK (0x00000009)
#define MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 256
#define MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST 0xF0
#define MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST 0xF1
#define MEGASAS_LOAD_BALANCE_FLAG 0x1
#define MEGASAS_DCMD_MBOX_PEND_FLAG 0x1
#define HOST_DIAG_WRITE_ENABLE 0x80
#define HOST_DIAG_RESET_ADAPTER 0x4
#define MEGASAS_FUSION_MAX_RESET_TRIES 3
#define MAX_MSIX_QUEUES_FUSION 16
/* Invader defines */
#define MPI2_TYPE_CUDA 0x2
#define MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH 0x4000
#define MR_RL_FLAGS_GRANT_DESTINATION_CPU0 0x00
#define MR_RL_FLAGS_GRANT_DESTINATION_CPU1 0x10
#define MR_RL_FLAGS_GRANT_DESTINATION_CUDA 0x80
#define MR_RL_FLAGS_SEQ_NUM_ENABLE 0x8
/* T10 PI defines */
#define MR_PROT_INFO_TYPE_CONTROLLER 0x8
#define MEGASAS_SCSI_VARIABLE_LENGTH_CMD 0x7f
#define MEGASAS_SCSI_SERVICE_ACTION_READ32 0x9
#define MEGASAS_SCSI_SERVICE_ACTION_WRITE32 0xB
#define MEGASAS_SCSI_ADDL_CDB_LEN 0x18
#define MEGASAS_RD_WR_PROTECT_CHECK_ALL 0x20
#define MEGASAS_RD_WR_PROTECT_CHECK_NONE 0x60
/*
* Raid context flags
*/
#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT 0x4
#define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_MASK 0x30
enum MR_RAID_FLAGS_IO_SUB_TYPE {
MR_RAID_FLAGS_IO_SUB_TYPE_NONE = 0,
MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD = 1,
};
/*
* Request descriptor types
*/
#define MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 0x7
#define MEGASAS_REQ_DESCRIPT_FLAGS_MFA 0x1
#define MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK 0x2
#define MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT 1
#define MEGASAS_FP_CMD_LEN 16
#define MEGASAS_FUSION_IN_RESET 0
/*
* Raid Context structure which describes MegaRAID specific IO Paramenters
* This resides at offset 0x60 where the SGL normally starts in MPT IO Frames
*/
struct RAID_CONTEXT {
u8 Type:4;
u8 nseg:4;
u8 resvd0;
u16 timeoutValue;
u8 regLockFlags;
u8 resvd1;
u16 VirtualDiskTgtId;
u64 regLockRowLBA;
u32 regLockLength;
u16 nextLMId;
u8 exStatus;
u8 status;
u8 RAIDFlags;
u8 numSGE;
u16 configSeqNum;
u8 spanArm;
u8 resvd2[3];
};
#define RAID_CTX_SPANARM_ARM_SHIFT (0)
#define RAID_CTX_SPANARM_ARM_MASK (0x1f)
#define RAID_CTX_SPANARM_SPAN_SHIFT (5)
#define RAID_CTX_SPANARM_SPAN_MASK (0xE0)
/*
* define region lock types
*/
enum REGION_TYPE {
REGION_TYPE_UNUSED = 0,
REGION_TYPE_SHARED_READ = 1,
REGION_TYPE_SHARED_WRITE = 2,
REGION_TYPE_EXCLUSIVE = 3,
};
/* MPI2 defines */
#define MPI2_FUNCTION_IOC_INIT (0x02) /* IOC Init */
#define MPI2_WHOINIT_HOST_DRIVER (0x04)
#define MPI2_VERSION_MAJOR (0x02)
#define MPI2_VERSION_MINOR (0x00)
#define MPI2_VERSION_MAJOR_MASK (0xFF00)
#define MPI2_VERSION_MAJOR_SHIFT (8)
#define MPI2_VERSION_MINOR_MASK (0x00FF)
#define MPI2_VERSION_MINOR_SHIFT (0)
#define MPI2_VERSION ((MPI2_VERSION_MAJOR << MPI2_VERSION_MAJOR_SHIFT) | \
MPI2_VERSION_MINOR)
#define MPI2_HEADER_VERSION_UNIT (0x10)
#define MPI2_HEADER_VERSION_DEV (0x00)
#define MPI2_HEADER_VERSION_UNIT_MASK (0xFF00)
#define MPI2_HEADER_VERSION_UNIT_SHIFT (8)
#define MPI2_HEADER_VERSION_DEV_MASK (0x00FF)
#define MPI2_HEADER_VERSION_DEV_SHIFT (0)
#define MPI2_HEADER_VERSION ((MPI2_HEADER_VERSION_UNIT << 8) | \
MPI2_HEADER_VERSION_DEV)
#define MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03)
#define MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG (0x8000)
#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG (0x0400)
#define MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP (0x0003)
#define MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG (0x0200)
#define MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD (0x0100)
#define MPI2_SCSIIO_EEDPFLAGS_INSERT_OP (0x0004)
#define MPI2_FUNCTION_SCSI_IO_REQUEST (0x00) /* SCSI IO */
#define MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY (0x06)
#define MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO (0x00)
#define MPI2_SGE_FLAGS_64_BIT_ADDRESSING (0x02)
#define MPI2_SCSIIO_CONTROL_WRITE (0x01000000)
#define MPI2_SCSIIO_CONTROL_READ (0x02000000)
#define MPI2_REQ_DESCRIPT_FLAGS_TYPE_MASK (0x0E)
#define MPI2_RPY_DESCRIPT_FLAGS_UNUSED (0x0F)
#define MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS (0x00)
#define MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK (0x0F)
#define MPI2_WRSEQ_FLUSH_KEY_VALUE (0x0)
#define MPI2_WRITE_SEQUENCE_OFFSET (0x00000004)
#define MPI2_WRSEQ_1ST_KEY_VALUE (0xF)
#define MPI2_WRSEQ_2ND_KEY_VALUE (0x4)
#define MPI2_WRSEQ_3RD_KEY_VALUE (0xB)
#define MPI2_WRSEQ_4TH_KEY_VALUE (0x2)
#define MPI2_WRSEQ_5TH_KEY_VALUE (0x7)
#define MPI2_WRSEQ_6TH_KEY_VALUE (0xD)
struct MPI25_IEEE_SGE_CHAIN64 {
u64 Address;
u32 Length;
u16 Reserved1;
u8 NextChainOffset;
u8 Flags;
};
struct MPI2_SGE_SIMPLE_UNION {
u32 FlagsLength;
union {
u32 Address32;
u64 Address64;
} u;
};
struct MPI2_SCSI_IO_CDB_EEDP32 {
u8 CDB[20]; /* 0x00 */
u32 PrimaryReferenceTag; /* 0x14 */
u16 PrimaryApplicationTag; /* 0x18 */
u16 PrimaryApplicationTagMask; /* 0x1A */
u32 TransferLength; /* 0x1C */
};
struct MPI2_SGE_CHAIN_UNION {
u16 Length;
u8 NextChainOffset;
u8 Flags;
union {
u32 Address32;
u64 Address64;
} u;
};
struct MPI2_IEEE_SGE_SIMPLE32 {
u32 Address;
u32 FlagsLength;
};
struct MPI2_IEEE_SGE_CHAIN32 {
u32 Address;
u32 FlagsLength;
};
struct MPI2_IEEE_SGE_SIMPLE64 {
u64 Address;
u32 Length;
u16 Reserved1;
u8 Reserved2;
u8 Flags;
};
struct MPI2_IEEE_SGE_CHAIN64 {
u64 Address;
u32 Length;
u16 Reserved1;
u8 Reserved2;
u8 Flags;
};
union MPI2_IEEE_SGE_SIMPLE_UNION {
struct MPI2_IEEE_SGE_SIMPLE32 Simple32;
struct MPI2_IEEE_SGE_SIMPLE64 Simple64;
};
union MPI2_IEEE_SGE_CHAIN_UNION {
struct MPI2_IEEE_SGE_CHAIN32 Chain32;
struct MPI2_IEEE_SGE_CHAIN64 Chain64;
};
union MPI2_SGE_IO_UNION {
struct MPI2_SGE_SIMPLE_UNION MpiSimple;
struct MPI2_SGE_CHAIN_UNION MpiChain;
union MPI2_IEEE_SGE_SIMPLE_UNION IeeeSimple;
union MPI2_IEEE_SGE_CHAIN_UNION IeeeChain;
};
union MPI2_SCSI_IO_CDB_UNION {
u8 CDB32[32];
struct MPI2_SCSI_IO_CDB_EEDP32 EEDP32;
struct MPI2_SGE_SIMPLE_UNION SGE;
};
/*
* RAID SCSI IO Request Message
* Total SGE count will be one less than _MPI2_SCSI_IO_REQUEST
*/
struct MPI2_RAID_SCSI_IO_REQUEST {
u16 DevHandle; /* 0x00 */
u8 ChainOffset; /* 0x02 */
u8 Function; /* 0x03 */
u16 Reserved1; /* 0x04 */
u8 Reserved2; /* 0x06 */
u8 MsgFlags; /* 0x07 */
u8 VP_ID; /* 0x08 */
u8 VF_ID; /* 0x09 */
u16 Reserved3; /* 0x0A */
u32 SenseBufferLowAddress; /* 0x0C */
u16 SGLFlags; /* 0x10 */
u8 SenseBufferLength; /* 0x12 */
u8 Reserved4; /* 0x13 */
u8 SGLOffset0; /* 0x14 */
u8 SGLOffset1; /* 0x15 */
u8 SGLOffset2; /* 0x16 */
u8 SGLOffset3; /* 0x17 */
u32 SkipCount; /* 0x18 */
u32 DataLength; /* 0x1C */
u32 BidirectionalDataLength; /* 0x20 */
u16 IoFlags; /* 0x24 */
u16 EEDPFlags; /* 0x26 */
u32 EEDPBlockSize; /* 0x28 */
u32 SecondaryReferenceTag; /* 0x2C */
u16 SecondaryApplicationTag; /* 0x30 */
u16 ApplicationTagTranslationMask; /* 0x32 */
u8 LUN[8]; /* 0x34 */
u32 Control; /* 0x3C */
union MPI2_SCSI_IO_CDB_UNION CDB; /* 0x40 */
struct RAID_CONTEXT RaidContext; /* 0x60 */
union MPI2_SGE_IO_UNION SGL; /* 0x80 */
};
/*
* MPT RAID MFA IO Descriptor.
*/
struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR {
u32 RequestFlags:8;
u32 MessageAddress1:24; /* bits 31:8*/
u32 MessageAddress2; /* bits 61:32 */
};
/* Default Request Descriptor */
struct MPI2_DEFAULT_REQUEST_DESCRIPTOR {
u8 RequestFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 SMID; /* 0x02 */
u16 LMID; /* 0x04 */
u16 DescriptorTypeDependent; /* 0x06 */
};
/* High Priority Request Descriptor */
struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR {
u8 RequestFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 SMID; /* 0x02 */
u16 LMID; /* 0x04 */
u16 Reserved1; /* 0x06 */
};
/* SCSI IO Request Descriptor */
struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR {
u8 RequestFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 SMID; /* 0x02 */
u16 LMID; /* 0x04 */
u16 DevHandle; /* 0x06 */
};
/* SCSI Target Request Descriptor */
struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR {
u8 RequestFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 SMID; /* 0x02 */
u16 LMID; /* 0x04 */
u16 IoIndex; /* 0x06 */
};
/* RAID Accelerator Request Descriptor */
struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR {
u8 RequestFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 SMID; /* 0x02 */
u16 LMID; /* 0x04 */
u16 Reserved; /* 0x06 */
};
/* union of Request Descriptors */
union MEGASAS_REQUEST_DESCRIPTOR_UNION {
struct MPI2_DEFAULT_REQUEST_DESCRIPTOR Default;
struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR HighPriority;
struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR SCSIIO;
struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR SCSITarget;
struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR RAIDAccelerator;
struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR MFAIo;
union {
struct {
u32 low;
u32 high;
} u;
u64 Words;
};
};
/* Default Reply Descriptor */
struct MPI2_DEFAULT_REPLY_DESCRIPTOR {
u8 ReplyFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 DescriptorTypeDependent1; /* 0x02 */
u32 DescriptorTypeDependent2; /* 0x04 */
};
/* Address Reply Descriptor */
struct MPI2_ADDRESS_REPLY_DESCRIPTOR {
u8 ReplyFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 SMID; /* 0x02 */
u32 ReplyFrameAddress; /* 0x04 */
};
/* SCSI IO Success Reply Descriptor */
struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR {
u8 ReplyFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 SMID; /* 0x02 */
u16 TaskTag; /* 0x04 */
u16 Reserved1; /* 0x06 */
};
/* TargetAssist Success Reply Descriptor */
struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR {
u8 ReplyFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 SMID; /* 0x02 */
u8 SequenceNumber; /* 0x04 */
u8 Reserved1; /* 0x05 */
u16 IoIndex; /* 0x06 */
};
/* Target Command Buffer Reply Descriptor */
struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR {
u8 ReplyFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u8 VP_ID; /* 0x02 */
u8 Flags; /* 0x03 */
u16 InitiatorDevHandle; /* 0x04 */
u16 IoIndex; /* 0x06 */
};
/* RAID Accelerator Success Reply Descriptor */
struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR {
u8 ReplyFlags; /* 0x00 */
u8 MSIxIndex; /* 0x01 */
u16 SMID; /* 0x02 */
u32 Reserved; /* 0x04 */
};
/* union of Reply Descriptors */
union MPI2_REPLY_DESCRIPTORS_UNION {
struct MPI2_DEFAULT_REPLY_DESCRIPTOR Default;
struct MPI2_ADDRESS_REPLY_DESCRIPTOR AddressReply;
struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR SCSIIOSuccess;
struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR TargetAssistSuccess;
struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR TargetCommandBuffer;
struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR
RAIDAcceleratorSuccess;
u64 Words;
};
/* IOCInit Request message */
struct MPI2_IOC_INIT_REQUEST {
u8 WhoInit; /* 0x00 */
u8 Reserved1; /* 0x01 */
u8 ChainOffset; /* 0x02 */
u8 Function; /* 0x03 */
u16 Reserved2; /* 0x04 */
u8 Reserved3; /* 0x06 */
u8 MsgFlags; /* 0x07 */
u8 VP_ID; /* 0x08 */
u8 VF_ID; /* 0x09 */
u16 Reserved4; /* 0x0A */
u16 MsgVersion; /* 0x0C */
u16 HeaderVersion; /* 0x0E */
u32 Reserved5; /* 0x10 */
u16 Reserved6; /* 0x14 */
u8 Reserved7; /* 0x16 */
u8 HostMSIxVectors; /* 0x17 */
u16 Reserved8; /* 0x18 */
u16 SystemRequestFrameSize; /* 0x1A */
u16 ReplyDescriptorPostQueueDepth; /* 0x1C */
u16 ReplyFreeQueueDepth; /* 0x1E */
u32 SenseBufferAddressHigh; /* 0x20 */
u32 SystemReplyAddressHigh; /* 0x24 */
u64 SystemRequestFrameBaseAddress; /* 0x28 */
u64 ReplyDescriptorPostQueueAddress;/* 0x30 */
u64 ReplyFreeQueueAddress; /* 0x38 */
u64 TimeStamp; /* 0x40 */
};
/* mrpriv defines */
#define MR_PD_INVALID 0xFFFF
#define MAX_SPAN_DEPTH 8
#define MAX_RAIDMAP_SPAN_DEPTH (MAX_SPAN_DEPTH)
#define MAX_ROW_SIZE 32
#define MAX_RAIDMAP_ROW_SIZE (MAX_ROW_SIZE)
#define MAX_LOGICAL_DRIVES 64
#define MAX_RAIDMAP_LOGICAL_DRIVES (MAX_LOGICAL_DRIVES)
#define MAX_RAIDMAP_VIEWS (MAX_LOGICAL_DRIVES)
#define MAX_ARRAYS 128
#define MAX_RAIDMAP_ARRAYS (MAX_ARRAYS)
#define MAX_PHYSICAL_DEVICES 256
#define MAX_RAIDMAP_PHYSICAL_DEVICES (MAX_PHYSICAL_DEVICES)
#define MR_DCMD_LD_MAP_GET_INFO 0x0300e101
struct MR_DEV_HANDLE_INFO {
u16 curDevHdl;
u8 validHandles;
u8 reserved;
u16 devHandle[2];
};
struct MR_ARRAY_INFO {
u16 pd[MAX_RAIDMAP_ROW_SIZE];
};
struct MR_QUAD_ELEMENT {
u64 logStart;
u64 logEnd;
u64 offsetInSpan;
u32 diff;
u32 reserved1;
};
struct MR_SPAN_INFO {
u32 noElements;
u32 reserved1;
struct MR_QUAD_ELEMENT quad[MAX_RAIDMAP_SPAN_DEPTH];
};
struct MR_LD_SPAN {
u64 startBlk;
u64 numBlks;
u16 arrayRef;
u8 reserved[6];
};
struct MR_SPAN_BLOCK_INFO {
u64 num_rows;
struct MR_LD_SPAN span;
struct MR_SPAN_INFO block_span_info;
};
struct MR_LD_RAID {
struct {
u32 fpCapable:1;
u32 reserved5:3;
u32 ldPiMode:4;
u32 pdPiMode:4;
u32 encryptionType:8;
u32 fpWriteCapable:1;
u32 fpReadCapable:1;
u32 fpWriteAcrossStripe:1;
u32 fpReadAcrossStripe:1;
u32 reserved4:8;
} capability;
u32 reserved6;
u64 size;
u8 spanDepth;
u8 level;
u8 stripeShift;
u8 rowSize;
u8 rowDataSize;
u8 writeMode;
u8 PRL;
u8 SRL;
u16 targetId;
u8 ldState;
u8 regTypeReqOnWrite;
u8 modFactor;
u8 regTypeReqOnRead;
u16 seqNum;
struct {
u32 ldSyncRequired:1;
u32 reserved:31;
} flags;
u8 reserved3[0x5C];
};
struct MR_LD_SPAN_MAP {
struct MR_LD_RAID ldRaid;
u8 dataArmMap[MAX_RAIDMAP_ROW_SIZE];
struct MR_SPAN_BLOCK_INFO spanBlock[MAX_RAIDMAP_SPAN_DEPTH];
};
struct MR_FW_RAID_MAP {
u32 totalSize;
union {
struct {
u32 maxLd;
u32 maxSpanDepth;
u32 maxRowSize;
u32 maxPdCount;
u32 maxArrays;
} validationInfo;
u32 version[5];
u32 reserved1[5];
};
u32 ldCount;
u32 Reserved1;
u8 ldTgtIdToLd[MAX_RAIDMAP_LOGICAL_DRIVES+
MAX_RAIDMAP_VIEWS];
u8 fpPdIoTimeoutSec;
u8 reserved2[7];
struct MR_ARRAY_INFO arMapInfo[MAX_RAIDMAP_ARRAYS];
struct MR_DEV_HANDLE_INFO devHndlInfo[MAX_RAIDMAP_PHYSICAL_DEVICES];
struct MR_LD_SPAN_MAP ldSpanMap[1];
};
struct IO_REQUEST_INFO {
u64 ldStartBlock;
u32 numBlocks;
u16 ldTgtId;
u8 isRead;
u16 devHandle;
u64 pdBlock;
u8 fpOkForIo;
};
struct MR_LD_TARGET_SYNC {
u8 targetId;
u8 reserved;
u16 seqNum;
};
#define IEEE_SGE_FLAGS_ADDR_MASK (0x03)
#define IEEE_SGE_FLAGS_SYSTEM_ADDR (0x00)
#define IEEE_SGE_FLAGS_IOCDDR_ADDR (0x01)
#define IEEE_SGE_FLAGS_IOCPLB_ADDR (0x02)
#define IEEE_SGE_FLAGS_IOCPLBNTA_ADDR (0x03)
#define IEEE_SGE_FLAGS_CHAIN_ELEMENT (0x80)
#define IEEE_SGE_FLAGS_END_OF_LIST (0x40)
struct megasas_register_set;
struct megasas_instance;
union desc_word {
u64 word;
struct {
u32 low;
u32 high;
} u;
};
struct megasas_cmd_fusion {
struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
dma_addr_t io_request_phys_addr;
union MPI2_SGE_IO_UNION *sg_frame;
dma_addr_t sg_frame_phys_addr;
u8 *sense;
dma_addr_t sense_phys_addr;
struct list_head list;
struct scsi_cmnd *scmd;
struct megasas_instance *instance;
u8 retry_for_fw_reset;
union MEGASAS_REQUEST_DESCRIPTOR_UNION *request_desc;
/*
* Context for a MFI frame.
* Used to get the mfi cmd from list when a MFI cmd is completed
*/
u32 sync_cmd_idx;
u32 index;
u8 flags;
};
struct LD_LOAD_BALANCE_INFO {
u8 loadBalanceFlag;
u8 reserved1;
u16 raid1DevHandle[2];
atomic_t scsi_pending_cmds[2];
u64 last_accessed_block[2];
};
struct MR_FW_RAID_MAP_ALL {
struct MR_FW_RAID_MAP raidMap;
struct MR_LD_SPAN_MAP ldSpanMap[MAX_LOGICAL_DRIVES - 1];
} __attribute__ ((packed));
struct fusion_context {
struct megasas_cmd_fusion **cmd_list;
struct list_head cmd_pool;
spinlock_t cmd_pool_lock;
dma_addr_t req_frames_desc_phys;
u8 *req_frames_desc;
struct dma_pool *io_request_frames_pool;
dma_addr_t io_request_frames_phys;
u8 *io_request_frames;
struct dma_pool *sg_dma_pool;
struct dma_pool *sense_dma_pool;
dma_addr_t reply_frames_desc_phys;
union MPI2_REPLY_DESCRIPTORS_UNION *reply_frames_desc;
struct dma_pool *reply_frames_desc_pool;
u16 last_reply_idx[MAX_MSIX_QUEUES_FUSION];
u32 reply_q_depth;
u32 request_alloc_sz;
u32 reply_alloc_sz;
u32 io_frames_alloc_sz;
u16 max_sge_in_main_msg;
u16 max_sge_in_chain;
u8 chain_offset_io_request;
u8 chain_offset_mfi_pthru;
struct MR_FW_RAID_MAP_ALL *ld_map[2];
dma_addr_t ld_map_phys[2];
u32 map_sz;
u8 fast_path_io;
struct LD_LOAD_BALANCE_INFO load_balance_info[MAX_LOGICAL_DRIVES];
};
union desc_value {
u64 word;
struct {
u32 low;
u32 high;
} u;
};
#endif /* _MEGARAID_SAS_FUSION_H_ */
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