1 /** @file 2 3 Virtio SCSI Host Device specific type and macro definitions corresponding to 4 the virtio-0.9.5 specification. 5 6 Copyright (C) 2012, Red Hat, Inc. 7 8 This program and the accompanying materials are licensed and made available 9 under the terms and conditions of the BSD License which accompanies this 10 distribution. The full text of the license may be found at 11 http://opensource.org/licenses/bsd-license.php 12 13 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT 14 WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 15 16 **/ 17 18 #ifndef _VIRTIO_SCSI_H_ 19 #define _VIRTIO_SCSI_H_ 20 21 #include <IndustryStandard/Virtio.h> 22 23 24 // 25 // virtio-0.9.5, Appendix I: SCSI Host Device 26 // 27 #pragma pack(1) 28 typedef struct { 29 UINT32 NumQueues; 30 UINT32 SegMax; 31 UINT32 MaxSectors; 32 UINT32 CmdPerLun; 33 UINT32 EventInfoSize; 34 UINT32 SenseSize; 35 UINT32 CdbSize; 36 UINT16 MaxChannel; 37 UINT16 MaxTarget; 38 UINT32 MaxLun; 39 } VIRTIO_SCSI_CONFIG; 40 #pragma pack() 41 42 #define OFFSET_OF_VSCSI(Field) OFFSET_OF (VIRTIO_SCSI_CONFIG, Field) 43 #define SIZE_OF_VSCSI(Field) (sizeof ((VIRTIO_SCSI_CONFIG *) 0)->Field) 44 45 #define VIRTIO_SCSI_F_INOUT BIT0 46 #define VIRTIO_SCSI_F_HOTPLUG BIT1 47 48 // 49 // We expect these maximum sizes from the host. Also we force the CdbLength and 50 // SenseDataLength parameters of EFI_EXT_SCSI_PASS_THRU_PROTOCOL.PassThru() not 51 // to exceed these limits. See UEFI 2.3.1 errata C 14.7. 52 // 53 #define VIRTIO_SCSI_CDB_SIZE 32 54 #define VIRTIO_SCSI_SENSE_SIZE 96 55 56 // 57 // We pass the dynamically sized buffers ("dataout", "datain") in separate ring 58 // descriptors. 59 // 60 #pragma pack(1) 61 typedef struct { 62 UINT8 Lun[8]; 63 UINT64 Id; 64 UINT8 TaskAttr; 65 UINT8 Prio; 66 UINT8 Crn; 67 UINT8 Cdb[VIRTIO_SCSI_CDB_SIZE]; 68 } VIRTIO_SCSI_REQ; 69 70 typedef struct { 71 UINT32 SenseLen; 72 UINT32 Residual; 73 UINT16 StatusQualifier; 74 UINT8 Status; 75 UINT8 Response; 76 UINT8 Sense[VIRTIO_SCSI_SENSE_SIZE]; 77 } VIRTIO_SCSI_RESP; 78 #pragma pack() 79 80 // 81 // selector of first virtio queue usable for request transfer 82 // 83 #define VIRTIO_SCSI_REQUEST_QUEUE 2 84 85 // 86 // host response codes 87 // 88 #define VIRTIO_SCSI_S_OK 0 89 #define VIRTIO_SCSI_S_OVERRUN 1 90 #define VIRTIO_SCSI_S_ABORTED 2 91 #define VIRTIO_SCSI_S_BAD_TARGET 3 92 #define VIRTIO_SCSI_S_RESET 4 93 #define VIRTIO_SCSI_S_BUSY 5 94 #define VIRTIO_SCSI_S_TRANSPORT_FAILURE 6 95 #define VIRTIO_SCSI_S_TARGET_FAILURE 7 96 #define VIRTIO_SCSI_S_NEXUS_FAILURE 8 97 #define VIRTIO_SCSI_S_FAILURE 9 98 99 #endif // _VIRTIO_SCSI_H_ 100
