scsi.h (8159B)
1#ifndef QEMU_HW_SCSI_H 2#define QEMU_HW_SCSI_H 3 4#include "block/aio.h" 5#include "hw/block/block.h" 6#include "hw/qdev-core.h" 7#include "scsi/utils.h" 8#include "qemu/notify.h" 9#include "qom/object.h" 10 11#define MAX_SCSI_DEVS 255 12 13typedef struct SCSIBus SCSIBus; 14typedef struct SCSIBusInfo SCSIBusInfo; 15typedef struct SCSIDevice SCSIDevice; 16typedef struct SCSIRequest SCSIRequest; 17typedef struct SCSIReqOps SCSIReqOps; 18 19#define SCSI_SENSE_BUF_SIZE_OLD 96 20#define SCSI_SENSE_BUF_SIZE 252 21#define DEFAULT_IO_TIMEOUT 30 22 23struct SCSIRequest { 24 SCSIBus *bus; 25 SCSIDevice *dev; 26 const SCSIReqOps *ops; 27 uint32_t refcount; 28 uint32_t tag; 29 uint32_t lun; 30 int16_t status; 31 int16_t host_status; 32 void *hba_private; 33 size_t resid; 34 SCSICommand cmd; 35 NotifierList cancel_notifiers; 36 37 /* Note: 38 * - fields before sense are initialized by scsi_req_alloc; 39 * - sense[] is uninitialized; 40 * - fields after sense are memset to 0 by scsi_req_alloc. 41 * */ 42 43 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 44 uint32_t sense_len; 45 bool enqueued; 46 bool io_canceled; 47 bool retry; 48 bool dma_started; 49 BlockAIOCB *aiocb; 50 QEMUSGList *sg; 51 QTAILQ_ENTRY(SCSIRequest) next; 52}; 53 54#define TYPE_SCSI_DEVICE "scsi-device" 55OBJECT_DECLARE_TYPE(SCSIDevice, SCSIDeviceClass, SCSI_DEVICE) 56 57struct SCSIDeviceClass { 58 DeviceClass parent_class; 59 void (*realize)(SCSIDevice *dev, Error **errp); 60 void (*unrealize)(SCSIDevice *dev); 61 int (*parse_cdb)(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, 62 void *hba_private); 63 SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun, 64 uint8_t *buf, void *hba_private); 65 void (*unit_attention_reported)(SCSIDevice *s); 66}; 67 68struct SCSIDevice 69{ 70 DeviceState qdev; 71 VMChangeStateEntry *vmsentry; 72 QEMUBH *bh; 73 uint32_t id; 74 BlockConf conf; 75 SCSISense unit_attention; 76 bool sense_is_ua; 77 uint8_t sense[SCSI_SENSE_BUF_SIZE]; 78 uint32_t sense_len; 79 QTAILQ_HEAD(, SCSIRequest) requests; 80 uint32_t channel; 81 uint32_t lun; 82 int blocksize; 83 int type; 84 uint64_t max_lba; 85 uint64_t wwn; 86 uint64_t port_wwn; 87 int scsi_version; 88 int default_scsi_version; 89 uint32_t io_timeout; 90 bool needs_vpd_bl_emulation; 91 bool hba_supports_iothread; 92}; 93 94extern const VMStateDescription vmstate_scsi_device; 95 96#define VMSTATE_SCSI_DEVICE(_field, _state) { \ 97 .name = (stringify(_field)), \ 98 .size = sizeof(SCSIDevice), \ 99 .vmsd = &vmstate_scsi_device, \ 100 .flags = VMS_STRUCT, \ 101 .offset = vmstate_offset_value(_state, _field, SCSIDevice), \ 102} 103 104/* cdrom.c */ 105int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track); 106int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num); 107 108/* scsi-bus.c */ 109struct SCSIReqOps { 110 size_t size; 111 void (*free_req)(SCSIRequest *req); 112 int32_t (*send_command)(SCSIRequest *req, uint8_t *buf); 113 void (*read_data)(SCSIRequest *req); 114 void (*write_data)(SCSIRequest *req); 115 uint8_t *(*get_buf)(SCSIRequest *req); 116 117 void (*save_request)(QEMUFile *f, SCSIRequest *req); 118 void (*load_request)(QEMUFile *f, SCSIRequest *req); 119}; 120 121struct SCSIBusInfo { 122 int tcq; 123 int max_channel, max_target, max_lun; 124 int (*parse_cdb)(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, 125 void *hba_private); 126 void (*transfer_data)(SCSIRequest *req, uint32_t arg); 127 void (*fail)(SCSIRequest *req); 128 void (*complete)(SCSIRequest *req, size_t resid); 129 void (*cancel)(SCSIRequest *req); 130 void (*change)(SCSIBus *bus, SCSIDevice *dev, SCSISense sense); 131 QEMUSGList *(*get_sg_list)(SCSIRequest *req); 132 133 void (*save_request)(QEMUFile *f, SCSIRequest *req); 134 void *(*load_request)(QEMUFile *f, SCSIRequest *req); 135 void (*free_request)(SCSIBus *bus, void *priv); 136}; 137 138#define TYPE_SCSI_BUS "SCSI" 139OBJECT_DECLARE_SIMPLE_TYPE(SCSIBus, SCSI_BUS) 140 141struct SCSIBus { 142 BusState qbus; 143 int busnr; 144 145 SCSISense unit_attention; 146 const SCSIBusInfo *info; 147}; 148 149/** 150 * scsi_bus_init_named: Initialize a SCSI bus with the specified name 151 * @bus: SCSIBus object to initialize 152 * @bus_size: size of @bus object 153 * @host: Device which owns the bus (generally the SCSI controller) 154 * @info: structure defining callbacks etc for the controller 155 * @bus_name: Name to use for this bus 156 * 157 * This in-place initializes @bus as a new SCSI bus with a name 158 * provided by the caller. It is the caller's responsibility to make 159 * sure that name does not clash with the name of any other bus in the 160 * system. Unless you need the new bus to have a specific name, you 161 * should use scsi_bus_new() instead. 162 */ 163void scsi_bus_init_named(SCSIBus *bus, size_t bus_size, DeviceState *host, 164 const SCSIBusInfo *info, const char *bus_name); 165 166/** 167 * scsi_bus_init: Initialize a SCSI bus 168 * 169 * This in-place-initializes @bus as a new SCSI bus and gives it 170 * an automatically generated unique name. 171 */ 172static inline void scsi_bus_init(SCSIBus *bus, size_t bus_size, 173 DeviceState *host, const SCSIBusInfo *info) 174{ 175 scsi_bus_init_named(bus, bus_size, host, info, NULL); 176} 177 178static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d) 179{ 180 return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus); 181} 182 183SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk, 184 int unit, bool removable, int bootindex, 185 bool share_rw, 186 BlockdevOnError rerror, 187 BlockdevOnError werror, 188 const char *serial, Error **errp); 189void scsi_bus_legacy_handle_cmdline(SCSIBus *bus); 190void scsi_legacy_handle_cmdline(void); 191 192SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d, 193 uint32_t tag, uint32_t lun, void *hba_private); 194SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, 195 uint8_t *buf, void *hba_private); 196int32_t scsi_req_enqueue(SCSIRequest *req); 197SCSIRequest *scsi_req_ref(SCSIRequest *req); 198void scsi_req_unref(SCSIRequest *req); 199 200int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf, 201 void *hba_private); 202int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf); 203void scsi_req_build_sense(SCSIRequest *req, SCSISense sense); 204void scsi_req_print(SCSIRequest *req); 205void scsi_req_continue(SCSIRequest *req); 206void scsi_req_data(SCSIRequest *req, int len); 207void scsi_req_complete(SCSIRequest *req, int status); 208void scsi_req_complete_failed(SCSIRequest *req, int host_status); 209uint8_t *scsi_req_get_buf(SCSIRequest *req); 210int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len); 211void scsi_req_cancel_complete(SCSIRequest *req); 212void scsi_req_cancel(SCSIRequest *req); 213void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier); 214void scsi_req_retry(SCSIRequest *req); 215void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense); 216void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense); 217void scsi_device_report_change(SCSIDevice *dev, SCSISense sense); 218void scsi_device_unit_attention_reported(SCSIDevice *dev); 219void scsi_generic_read_device_inquiry(SCSIDevice *dev); 220int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed); 221int scsi_SG_IO_FROM_DEV(BlockBackend *blk, uint8_t *cmd, uint8_t cmd_size, 222 uint8_t *buf, uint8_t buf_size, uint32_t timeout); 223SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int target, int lun); 224SCSIDevice *scsi_device_get(SCSIBus *bus, int channel, int target, int lun); 225 226/* scsi-generic.c. */ 227extern const SCSIReqOps scsi_generic_req_ops; 228 229#endif