projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 86aec22d ED |
1 | /* |
| 2 | * Virtio-SCSI definitions for s390 machine loader for qemu | |
| 3 | * | |
| 4 | * Copyright 2015 IBM Corp. | |
| 5 | * Author: Eugene "jno" Dvurechenski <jno@linux.vnet.ibm.com> | |
| 6 | * | |
| 7 | * This work is licensed under the terms of the GNU GPL, version 2 or (at | |
| 8 | * your option) any later version. See the COPYING file in the top-level | |
| 9 | * directory. | |
| 10 | */ | |
| 11 | ||
| 12 | #ifndef VIRTIO_SCSI_H | |
| 13 | #define VIRTIO_SCSI_H | |
| 14 | ||
| 15 | #include "s390-ccw.h" | |
| 16 | #include "virtio.h" | |
| 17 | #include "scsi.h" | |
| 18 | ||
| 19 | #define VIRTIO_SCSI_CDB_SIZE SCSI_DEFAULT_CDB_SIZE | |
| 20 | #define VIRTIO_SCSI_SENSE_SIZE SCSI_DEFAULT_SENSE_SIZE | |
| 21 | ||
| 22 | /* command-specific response values */ | |
| 23 | #define VIRTIO_SCSI_S_OK 0x00 | |
| 24 | #define VIRTIO_SCSI_S_BAD_TARGET 0x03 | |
| 25 | ||
| 26 | #define QEMU_CDROM_SIGNATURE "QEMU CD-ROM " | |
| 27 | ||
| 28 | enum virtio_scsi_vq_id { | |
| 29 | VR_CONTROL = 0, | |
| 30 | VR_EVENT = 1, | |
| 31 | VR_REQUEST = 2, | |
| 32 | }; | |
| 33 | ||
| 34 | struct VirtioScsiCmdReq { | |
| 35 | ScsiLun lun; | |
| 36 | uint64_t id; | |
| 37 | uint8_t task_attr; /* = 0 = VIRTIO_SCSI_S_SIMPLE */ | |
| 38 | uint8_t prio; | |
| 39 | uint8_t crn; /* = 0 */ | |
| 40 | uint8_t cdb[VIRTIO_SCSI_CDB_SIZE]; | |
| 41 | } __attribute__((packed)); | |
| 42 | typedef struct VirtioScsiCmdReq VirtioScsiCmdReq; | |
| 43 | ||
| 44 | struct VirtioScsiCmdResp { | |
| 45 | uint32_t sense_len; | |
| 46 | uint32_t residual; | |
| 47 | uint16_t status_qualifier; | |
| 48 | uint8_t status; /* first check for .response */ | |
| 49 | uint8_t response; /* then for .status */ | |
| 50 | uint8_t sense[VIRTIO_SCSI_SENSE_SIZE]; | |
| 51 | } __attribute__((packed)); | |
| 52 | typedef struct VirtioScsiCmdResp VirtioScsiCmdResp; | |
| 53 | ||
| 54 | static inline const char *virtio_scsi_response_msg(const VirtioScsiCmdResp *r) | |
| 55 | { | |
| 56 | static char err_msg[] = "VS RESP=XX"; | |
| 57 | uint8_t v = r->response; | |
| 58 | ||
| 59 | fill_hex_val(err_msg + 8, &v, 1); | |
| 60 | return err_msg; | |
| 61 | } | |
| 62 | ||
| 63 | static inline bool virtio_scsi_response_ok(const VirtioScsiCmdResp *r) | |
| 64 | { | |
| 65 | return r->response == VIRTIO_SCSI_S_OK && r->status == CDB_STATUS_GOOD; | |
| 66 | } | |
| 67 | ||
| 68 | void virtio_scsi_setup(VDev *vdev); | |
| 69 | int virtio_scsi_read_many(VDev *vdev, | |
| 70 | ulong sector, void *load_addr, int sec_num); | |
| 71 | ||
| 72 | #endif /* VIRTIO_SCSI_H */ |