X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdeModulePkg%2FBus%2FPci%2FNvmExpressDxe%2FNvmExpressHci.h;fp=MdeModulePkg%2FBus%2FPci%2FNvmExpressDxe%2FNvmExpressHci.h;h=406cef4f8ed22f08ee0457bf11417f7dc0c6e3eb;hb=eb290d0257814701eefd93ee71d46efb6dcc320b;hp=0000000000000000000000000000000000000000;hpb=17625930ba14ec785dbc221d79967d398593cc32;p=mirror_edk2.git diff --git a/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressHci.h b/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressHci.h new file mode 100644 index 0000000000..406cef4f8e --- /dev/null +++ b/MdeModulePkg/Bus/Pci/NvmExpressDxe/NvmExpressHci.h @@ -0,0 +1,790 @@ +/** @file + NvmExpressDxe driver is used to manage non-volatile memory subsystem which follows + NVM Express specification. + + Copyright (c) 2013, Intel Corporation. All rights reserved.
+ This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php. + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#ifndef _NVME_HCI_H_ +#define _NVME_HCI_H_ + +#define NVME_BAR 0 + +// +// controller register offsets +// +#define NVME_CAP_OFFSET 0x0000 // Controller Capabilities +#define NVME_VER_OFFSET 0x0008 // Version +#define NVME_INTMS_OFFSET 0x000c // Interrupt Mask Set +#define NVME_INTMC_OFFSET 0x0010 // Interrupt Mask Clear +#define NVME_CC_OFFSET 0x0014 // Controller Configuration +#define NVME_CSTS_OFFSET 0x001c // Controller Status +#define NVME_AQA_OFFSET 0x0024 // Admin Queue Attributes +#define NVME_ASQ_OFFSET 0x0028 // Admin Submission Queue Base Address +#define NVME_ACQ_OFFSET 0x0030 // Admin Completion Queue Base Address +#define NVME_SQ0_OFFSET 0x1000 // Submission Queue 0 (admin) Tail Doorbell +#define NVME_CQ0_OFFSET 0x1004 // Completion Queue 0 (admin) Head Doorbell + +// +// These register offsets are defined as 0x1000 + (N * (4 << CAP.DSTRD)) +// Get the doorbell stride bit shift value from the controller capabilities. +// +#define NVME_SQTDBL_OFFSET(QID, DSTRD) 0x1000 + ((2 * (QID)) * (4 << (DSTRD))) // Submission Queue y (NVM) Tail Doorbell +#define NVME_CQHDBL_OFFSET(QID, DSTRD) 0x1000 + (((2 * (QID)) + 1) * (4 << (DSTRD))) // Completion Queue y (NVM) Head Doorbell + + +#pragma pack(1) + +// +// 3.1.1 Offset 00h: CAP - Controller Capabilities +// +typedef struct { + UINT16 Mqes; // Maximum Queue Entries Supported + UINT8 Cqr:1; // Contiguous Queues Required + UINT8 Ams:2; // Arbitration Mechanism Supported + UINT8 Rsvd1:5; + UINT8 To; // Timeout + UINT16 Dstrd:4; + UINT16 Rsvd2:1; + UINT16 Css:4; // Command Sets Supported + UINT16 Rsvd3:7; + UINT8 Mpsmin:4; + UINT8 Mpsmax:4; + UINT8 Rsvd4; +} NVME_CAP; + +// +// 3.1.2 Offset 08h: VS - Version +// +typedef struct { + UINT16 Mnr; // Minor version number + UINT16 Mjr; // Major version number +} NVME_VER; + +// +// 3.1.5 Offset 14h: CC - Controller Configuration +// +typedef struct { + UINT16 En:1; // Enable + UINT16 Rsvd1:3; + UINT16 Css:3; // Command Set Selected + UINT16 Mps:4; // Memory Page Size + UINT16 Ams:3; // Arbitration Mechanism Selected + UINT16 Shn:2; // Shutdown Notification + UINT8 Iosqes:4; // I/O Submission Queue Entry Size + UINT8 Iocqes:4; // I/O Completion Queue Entry Size + UINT8 Rsvd2; +} NVME_CC; + +// +// 3.1.6 Offset 1Ch: CSTS - Controller Status +// +typedef struct { + UINT32 Rdy:1; // Ready + UINT32 Cfs:1; // Controller Fatal Status + UINT32 Shst:2; // Shutdown Status + UINT32 Nssro:1; // NVM Subsystem Reset Occurred + UINT32 Rsvd1:27; +} NVME_CSTS; + +// +// 3.1.8 Offset 24h: AQA - Admin Queue Attributes +// +typedef struct { + UINT16 Asqs:12; // Submission Queue Size + UINT16 Rsvd1:4; + UINT16 Acqs:12; // Completion Queue Size + UINT16 Rsvd2:4; +} NVME_AQA; + +// +// 3.1.9 Offset 28h: ASQ - Admin Submission Queue Base Address +// +typedef struct { + UINT64 Rsvd1:12; + UINT64 Asqb:52; // Admin Submission Queue Base Address +} NVME_ASQ; + +// +// 3.1.10 Offset 30h: ACQ - Admin Completion Queue Base Address +// +typedef struct { + UINT64 Rsvd1:12; + UINT64 Acqb:52; // Admin Completion Queue Base Address +} NVME_ACQ; + +// +// 3.1.11 Offset (1000h + ((2y) * (4 << CAP.DSTRD))): SQyTDBL - Submission Queue y Tail Doorbell +// +typedef struct { + UINT16 Sqt; + UINT16 Rsvd1; +} NVME_SQTDBL; + +// +// 3.1.12 Offset (1000h + ((2y + 1) * (4 << CAP.DSTRD))): CQyHDBL - Completion Queue y Head Doorbell +// +typedef struct { + UINT16 Cqh; + UINT16 Rsvd1; +} NVME_CQHDBL; + +// +// NVM command set structures +// +// Read Command +// +typedef struct { + // + // CDW 10, 11 + // + UINT64 Slba; /* Starting Sector Address */ + // + // CDW 12 + // + UINT16 Nlb; /* Number of Sectors */ + UINT16 Rsvd1:10; + UINT16 Prinfo:4; /* Protection Info Check */ + UINT16 Fua:1; /* Force Unit Access */ + UINT16 Lr:1; /* Limited Retry */ + // + // CDW 13 + // + UINT32 Af:4; /* Access Frequency */ + UINT32 Al:2; /* Access Latency */ + UINT32 Sr:1; /* Sequential Request */ + UINT32 In:1; /* Incompressible */ + UINT32 Rsvd2:24; + // + // CDW 14 + // + UINT32 Eilbrt; /* Expected Initial Logical Block Reference Tag */ + // + // CDW 15 + // + UINT16 Elbat; /* Expected Logical Block Application Tag */ + UINT16 Elbatm; /* Expected Logical Block Application Tag Mask */ +} NVME_READ; + +// +// Write Command +// +typedef struct { + // + // CDW 10, 11 + // + UINT64 Slba; /* Starting Sector Address */ + // + // CDW 12 + // + UINT16 Nlb; /* Number of Sectors */ + UINT16 Rsvd1:10; + UINT16 Prinfo:4; /* Protection Info Check */ + UINT16 Fua:1; /* Force Unit Access */ + UINT16 Lr:1; /* Limited Retry */ + // + // CDW 13 + // + UINT32 Af:4; /* Access Frequency */ + UINT32 Al:2; /* Access Latency */ + UINT32 Sr:1; /* Sequential Request */ + UINT32 In:1; /* Incompressible */ + UINT32 Rsvd2:24; + // + // CDW 14 + // + UINT32 Ilbrt; /* Initial Logical Block Reference Tag */ + // + // CDW 15 + // + UINT16 Lbat; /* Logical Block Application Tag */ + UINT16 Lbatm; /* Logical Block Application Tag Mask */ +} NVME_WRITE; + +// +// Flush +// +typedef struct { + // + // CDW 10 + // + UINT32 Flush; /* Flush */ +} NVME_FLUSH; + +// +// Write Uncorrectable command +// +typedef struct { + // + // CDW 10, 11 + // + UINT64 Slba; /* Starting LBA */ + // + // CDW 12 + // + UINT32 Nlb:16; /* Number of Logical Blocks */ + UINT32 Rsvd1:16; +} NVME_WRITE_UNCORRECTABLE; + +// +// Write Zeroes command +// +typedef struct { + // + // CDW 10, 11 + // + UINT64 Slba; /* Starting LBA */ + // + // CDW 12 + // + UINT16 Nlb; /* Number of Logical Blocks */ + UINT16 Rsvd1:10; + UINT16 Prinfo:4; /* Protection Info Check */ + UINT16 Fua:1; /* Force Unit Access */ + UINT16 Lr:1; /* Limited Retry */ + // + // CDW 13 + // + UINT32 Rsvd2; + // + // CDW 14 + // + UINT32 Ilbrt; /* Initial Logical Block Reference Tag */ + // + // CDW 15 + // + UINT16 Lbat; /* Logical Block Application Tag */ + UINT16 Lbatm; /* Logical Block Application Tag Mask */ +} NVME_WRITE_ZEROES; + +// +// Compare command +// +typedef struct { + // + // CDW 10, 11 + // + UINT64 Slba; /* Starting LBA */ + // + // CDW 12 + // + UINT16 Nlb; /* Number of Logical Blocks */ + UINT16 Rsvd1:10; + UINT16 Prinfo:4; /* Protection Info Check */ + UINT16 Fua:1; /* Force Unit Access */ + UINT16 Lr:1; /* Limited Retry */ + // + // CDW 13 + // + UINT32 Rsvd2; + // + // CDW 14 + // + UINT32 Eilbrt; /* Expected Initial Logical Block Reference Tag */ + // + // CDW 15 + // + UINT16 Elbat; /* Expected Logical Block Application Tag */ + UINT16 Elbatm; /* Expected Logical Block Application Tag Mask */ +} NVME_COMPARE; + +typedef union { + NVME_READ Read; + NVME_WRITE Write; + NVME_FLUSH Flush; + NVME_WRITE_UNCORRECTABLE WriteUncorrectable; + NVME_WRITE_ZEROES WriteZeros; + NVME_COMPARE Compare; +} NVME_CMD; + +typedef struct { + UINT16 Mp; /* Maximum Power */ + UINT8 Rsvd1; /* Reserved as of Nvm Express 1.1 Spec */ + UINT8 Mps:1; /* Max Power Scale */ + UINT8 Nops:1; /* Non-Operational State */ + UINT8 Rsvd2:6; /* Reserved as of Nvm Express 1.1 Spec */ + UINT32 Enlat; /* Entry Latency */ + UINT32 Exlat; /* Exit Latency */ + UINT8 Rrt:5; /* Relative Read Throughput */ + UINT8 Rsvd3:3; /* Reserved as of Nvm Express 1.1 Spec */ + UINT8 Rrl:5; /* Relative Read Leatency */ + UINT8 Rsvd4:3; /* Reserved as of Nvm Express 1.1 Spec */ + UINT8 Rwt:5; /* Relative Write Throughput */ + UINT8 Rsvd5:3; /* Reserved as of Nvm Express 1.1 Spec */ + UINT8 Rwl:5; /* Relative Write Leatency */ + UINT8 Rsvd6:3; /* Reserved as of Nvm Express 1.1 Spec */ + UINT8 Rsvd7[16]; /* Reserved as of Nvm Express 1.1 Spec */ +} NVME_PSDESCRIPTOR; + +// +// Identify Controller Data +// +typedef struct { + // + // Controller Capabilities and Features 0-255 + // + UINT16 Vid; /* PCI Vendor ID */ + UINT16 Ssvid; /* PCI sub-system vendor ID */ + UINT8 Sn[20]; /* Produce serial number */ + + UINT8 Mn[40]; /* Proeduct model number */ + UINT8 Fr[8]; /* Firmware Revision */ + UINT8 Rab; /* Recommended Arbitration Burst */ + UINT8 Ieee_oiu[3]; /* Organization Unique Identifier */ + UINT8 Cmic; /* Multi-interface Capabilities */ + UINT8 Mdts; /* Maximum Data Transfer Size */ + UINT8 Cntlid[2]; /* Controller ID */ + UINT8 Rsvd1[176]; /* Reserved as of Nvm Express 1.1 Spec */ + // + // Admin Command Set Attributes + // + UINT16 Oacs; /* Optional Admin Command Support */ + UINT8 Acl; /* Abort Command Limit */ + UINT8 Aerl; /* Async Event Request Limit */ + UINT8 Frmw; /* Firmware updates */ + UINT8 Lpa; /* Log Page Attributes */ + UINT8 Elpe; /* Error Log Page Entries */ + UINT8 Npss; /* Number of Power States Support */ + UINT8 Avscc; /* Admin Vendor Specific Command Configuration */ + UINT8 Apsta; /* Autonomous Power State Transition Attributes */ + UINT8 Rsvd2[246]; /* Reserved as of Nvm Express 1.1 Spec */ + // + // NVM Command Set Attributes + // + UINT8 Sqes; /* Submission Queue Entry Size */ + UINT8 Cqes; /* Completion Queue Entry Size */ + UINT16 Rsvd3; /* Reserved as of Nvm Express 1.1 Spec */ + UINT32 Nn; /* Number of Namespaces */ + UINT16 Oncs; /* Optional NVM Command Support */ + UINT16 Fuses; /* Fused Operation Support */ + UINT8 Fna; /* Format NVM Attributes */ + UINT8 Vwc; /* Volatile Write Cache */ + UINT16 Awun; /* Atomic Write Unit Normal */ + UINT16 Awupf; /* Atomic Write Unit Power Fail */ + UINT8 Nvscc; /* NVM Vendor Specific Command Configuration */ + UINT8 Rsvd4; /* Reserved as of Nvm Express 1.1 Spec */ + UINT16 Acwu; /* Atomic Compare & Write Unit */ + UINT16 Rsvd5; /* Reserved as of Nvm Express 1.1 Spec */ + UINT32 Sgls; /* SGL Support */ + UINT8 Rsvd6[164]; /* Reserved as of Nvm Express 1.1 Spec */ + // + // I/O Command set Attributes + // + UINT8 Rsvd7[1344]; /* Reserved as of Nvm Express 1.1 Spec */ + // + // Power State Descriptors + // + NVME_PSDESCRIPTOR PsDescriptor[32]; + + UINT8 VendorData[1024]; /* Vendor specific data */ +} NVME_ADMIN_CONTROLLER_DATA; + +typedef struct { + UINT16 Ms; /* Metadata Size */ + UINT8 Lbads; /* LBA Data Size */ + UINT8 Rp:2; /* Relative Performance */ + #define LBAF_RP_BEST 00b + #define LBAF_RP_BETTER 01b + #define LBAF_RP_GOOD 10b + #define LBAF_RP_DEGRADED 11b + UINT8 Rsvd1:6; /* Reserved as of Nvm Express 1.1 Spec */ +} NVME_LBAFORMAT; + +// +// Identify Namespace Data +// +typedef struct { + // + // NVM Command Set Specific + // + UINT64 Nsze; /* Namespace Size (total number of blocks in formatted namespace) */ + UINT64 Ncap; /* Namespace Capacity (max number of logical blocks) */ + UINT64 Nuse; /* Namespace Utilization */ + UINT8 Nsfeat; /* Namespace Features */ + UINT8 Nlbaf; /* Number of LBA Formats */ + UINT8 Flbas; /* Formatted LBA size */ + UINT8 Mc; /* Metadata Capabilities */ + UINT8 Dpc; /* End-to-end Data Protection capabilities */ + UINT8 Dps; /* End-to-end Data Protection Type Settings */ + UINT8 Nmic; /* Namespace Multi-path I/O and Namespace Sharing Capabilities */ + UINT8 Rescap; /* Reservation Capabilities */ + UINT8 Rsvd1[88]; /* Reserved as of Nvm Express 1.1 Spec */ + UINT64 Eui64; /* IEEE Extended Unique Identifier */ + // + // LBA Format + // + NVME_LBAFORMAT LbaFormat[16]; + + UINT8 Rsvd2[192]; /* Reserved as of Nvm Express 1.1 Spec */ + UINT8 VendorData[3712]; /* Vendor specific data */ +} NVME_ADMIN_NAMESPACE_DATA; + +// +// NvmExpress Admin Identify Cmd +// +typedef struct { + // + // CDW 10 + // + UINT32 Cns:2; + UINT32 Rsvd1:30; +} NVME_ADMIN_IDENTIFY; + +// +// NvmExpress Admin Create I/O Completion Queue +// +typedef struct { + // + // CDW 10 + // + UINT32 Qid:16; /* Queue Identifier */ + UINT32 Qsize:16; /* Queue Size */ + + // + // CDW 11 + // + UINT32 Pc:1; /* Physically Contiguous */ + UINT32 Ien:1; /* Interrupts Enabled */ + UINT32 Rsvd1:14; /* reserved as of Nvm Express 1.1 Spec */ + UINT32 Iv:16; /* Interrupt Vector */ +} NVME_ADMIN_CRIOCQ; + +// +// NvmExpress Admin Create I/O Submission Queue +// +typedef struct { + // + // CDW 10 + // + UINT32 Qid:16; /* Queue Identifier */ + UINT32 Qsize:16; /* Queue Size */ + + // + // CDW 11 + // + UINT32 Pc:1; /* Physically Contiguous */ + UINT32 Qprio:2; /* Queue Priority */ + UINT32 Rsvd1:13; /* Reserved as of Nvm Express 1.1 Spec */ + UINT32 Cqid:16; /* Completion Queue ID */ +} NVME_ADMIN_CRIOSQ; + +// +// NvmExpress Admin Delete I/O Completion Queue +// +typedef struct { + // + // CDW 10 + // + UINT16 Qid; + UINT16 Rsvd1; +} NVME_ADMIN_DEIOCQ; + +// +// NvmExpress Admin Delete I/O Submission Queue +// +typedef struct { + // + // CDW 10 + // + UINT16 Qid; + UINT16 Rsvd1; +} NVME_ADMIN_DEIOSQ; + +// +// NvmExpress Admin Abort Command +// +typedef struct { + // + // CDW 10 + // + UINT32 Sqid:16; /* Submission Queue identifier */ + UINT32 Cid:16; /* Command Identifier */ +} NVME_ADMIN_ABORT; + +// +// NvmExpress Admin Firmware Activate Command +// +typedef struct { + // + // CDW 10 + // + UINT32 Fs:3; /* Submission Queue identifier */ + UINT32 Aa:2; /* Command Identifier */ + UINT32 Rsvd1:27; +} NVME_ADMIN_FIRMWARE_ACTIVATE; + +// +// NvmExpress Admin Firmware Image Download Command +// +typedef struct { + // + // CDW 10 + // + UINT32 Numd; /* Number of Dwords */ + // + // CDW 11 + // + UINT32 Ofst; /* Offset */ +} NVME_ADMIN_FIRMWARE_IMAGE_DOWNLOAD; + +// +// NvmExpress Admin Get Features Command +// +typedef struct { + // + // CDW 10 + // + UINT32 Fid:8; /* Feature Identifier */ + UINT32 Sel:3; /* Select */ + UINT32 Rsvd1:21; +} NVME_ADMIN_GET_FEATURES; + +// +// NvmExpress Admin Get Log Page Command +// +typedef struct { + // + // CDW 10 + // + UINT32 Lid:8; /* Log Page Identifier */ + #define LID_ERROR_INFO + #define LID_SMART_INFO + #define LID_FW_SLOT_INFO + UINT32 Rsvd1:8; + UINT32 Numd:12; /* Number of Dwords */ + UINT32 Rsvd2:4; /* Reserved as of Nvm Express 1.1 Spec */ +} NVME_ADMIN_GET_LOG_PAGE; + +// +// NvmExpress Admin Set Features Command +// +typedef struct { + // + // CDW 10 + // + UINT32 Fid:8; /* Feature Identifier */ + UINT32 Rsvd1:23; + UINT32 Sv:1; /* Save */ +} NVME_ADMIN_SET_FEATURES; + +// +// NvmExpress Admin Format NVM Command +// +typedef struct { + // + // CDW 10 + // + UINT32 Lbaf:4; /* LBA Format */ + UINT32 Ms:1; /* Metadata Settings */ + UINT32 Pi:3; /* Protection Information */ + UINT32 Pil:1; /* Protection Information Location */ + UINT32 Ses:3; /* Secure Erase Settings */ + UINT32 Rsvd1:20; +} NVME_ADMIN_FORMAT_NVM; + +// +// NvmExpress Admin Security Receive Command +// +typedef struct { + // + // CDW 10 + // + UINT32 Rsvd1:8; + UINT32 Spsp:16; /* SP Specific */ + UINT32 Secp:8; /* Security Protocol */ + // + // CDW 11 + // + UINT32 Al; /* Allocation Length */ +} NVME_ADMIN_SECURITY_RECEIVE; + +// +// NvmExpress Admin Security Send Command +// +typedef struct { + // + // CDW 10 + // + UINT32 Rsvd1:8; + UINT32 Spsp:16; /* SP Specific */ + UINT32 Secp:8; /* Security Protocol */ + // + // CDW 11 + // + UINT32 Tl; /* Transfer Length */ +} NVME_ADMIN_SECURITY_SEND; + +typedef union { + NVME_ADMIN_IDENTIFY Identify; + NVME_ADMIN_CRIOCQ CrIoCq; + NVME_ADMIN_CRIOSQ CrIoSq; + NVME_ADMIN_DEIOCQ DeIoCq; + NVME_ADMIN_DEIOSQ DeIoSq; + NVME_ADMIN_ABORT Abort; + NVME_ADMIN_FIRMWARE_ACTIVATE Activate; + NVME_ADMIN_FIRMWARE_IMAGE_DOWNLOAD FirmwareImageDownload; + NVME_ADMIN_GET_FEATURES GetFeatures; + NVME_ADMIN_GET_LOG_PAGE GetLogPage; + NVME_ADMIN_SET_FEATURES SetFeatures; + NVME_ADMIN_FORMAT_NVM FormatNvm; + NVME_ADMIN_SECURITY_RECEIVE SecurityReceive; + NVME_ADMIN_SECURITY_SEND SecuritySend; +} NVME_ADMIN_CMD; + +typedef struct { + UINT32 Cdw10; + UINT32 Cdw11; + UINT32 Cdw12; + UINT32 Cdw13; + UINT32 Cdw14; + UINT32 Cdw15; +} NVME_RAW; + +typedef union { + NVME_ADMIN_CMD Admin; // Union of Admin commands + NVME_CMD Nvm; // Union of Nvm commands + NVME_RAW Raw; +} NVME_PAYLOAD; + +// +// Submission Queue +// +typedef struct { + // + // CDW 0, Common to all comnmands + // + UINT8 Opc; // Opcode + UINT8 Fuse:2; // Fused Operation + UINT8 Rsvd1:5; + UINT8 Psdt:1; // PRP or SGL for Data Transfer + UINT16 Cid; // Command Identifier + + // + // CDW 1 + // + UINT32 Nsid; // Namespace Identifier + + // + // CDW 2,3 + // + UINT64 Rsvd2; + + // + // CDW 4,5 + // + UINT64 Mptr; // Metadata Pointer + + // + // CDW 6-9 + // + UINT64 Prp[2]; // First and second PRP entries + + NVME_PAYLOAD Payload; + +} NVME_SQ; + +// +// Completion Queue +// +typedef struct { + // + // CDW 0 + // + UINT32 Dword0; + // + // CDW 1 + // + UINT32 Rsvd1; + // + // CDW 2 + // + UINT16 Sqhd; // Submission Queue Head Pointer + UINT16 Sqid; // Submission Queue Identifier + // + // CDW 3 + // + UINT16 Cid; // Command Identifier + UINT16 Pt:1; // Phase Tag + UINT16 Sc:8; // Status Code + UINT16 Sct:3; // Status Code Type + UINT16 Rsvd2:2; + UINT16 Mo:1; // More + UINT16 Dnr:1; // Retry +} NVME_CQ; + +// +// Nvm Express Admin cmd opcodes +// +#define NVME_ADMIN_CRIOSQ_OPC 1 +#define NVME_ADMIN_CRIOCQ_OPC 5 +#define NVME_ADMIN_IDENTIFY_OPC 6 + +#define NVME_IO_FLUSH_OPC 0 +#define NVME_IO_WRITE_OPC 1 +#define NVME_IO_READ_OPC 2 + +// +// Offset from the beginning of private data queue buffer +// +#define NVME_ASQ_BUF_OFFSET EFI_PAGE_SIZE + +/** + Initialize the Nvm Express controller. + + @param[in] Private The pointer to the NVME_CONTROLLER_PRIVATE_DATA data structure. + + @retval EFI_SUCCESS The NVM Express Controller is initialized successfully. + @retval Others A device error occurred while initializing the controller. + +**/ +EFI_STATUS +NvmeControllerInit ( + IN NVME_CONTROLLER_PRIVATE_DATA *Private + ); + +/** + Get identify controller data. + + @param Private The pointer to the NVME_CONTROLLER_PRIVATE_DATA data structure. + @param Buffer The buffer used to store the identify controller data. + + @return EFI_SUCCESS Successfully get the identify controller data. + @return EFI_DEVICE_ERROR Fail to get the identify controller data. + +**/ +EFI_STATUS +NvmeIdentifyController ( + IN NVME_CONTROLLER_PRIVATE_DATA *Private, + IN VOID *Buffer + ); + +/** + Get specified identify namespace data. + + @param Private The pointer to the NVME_CONTROLLER_PRIVATE_DATA data structure. + @param NamespaceId The specified namespace identifier. + @param Buffer The buffer used to store the identify namespace data. + + @return EFI_SUCCESS Successfully get the identify namespace data. + @return EFI_DEVICE_ERROR Fail to get the identify namespace data. + +**/ +EFI_STATUS +NvmeIdentifyNamespace ( + IN NVME_CONTROLLER_PRIVATE_DATA *Private, + IN UINT32 NamespaceId, + IN VOID *Buffer + ); + +#pragma pack() + +#endif +