0a96ca2437
To add support for the emulation of Block Limits VPD page for passthrough devices, a few adjustments in the current code base is required to avoid repetition and improve clarity. In scsi-generic.c, detach the Inquiry handling from scsi_read_complete and put it into a new function called scsi_handle_inquiry_reply. This change aims to avoid cluttering of scsi_read_complete when we more logic in the Inquiry response handling is added in the next patches, centralizing the changes in the new function. In scsi-disk.c, take the build of all emulated VPD pages from scsi_disk_emulate_inquiry and make it available to other files into a non-static function called scsi_disk_emulate_vpd_page. Making it public will allow the future VPD BL emulation code for passthrough devices to use it from scsi-generic.c, avoiding copy/pasting this code solely for that purpose. It also has the advantage of providing emulation of all VPD pages in case we need to emulate other pages in other scenarios. As a bonus, scsi_disk_emulate_inquiry got tidier. Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20180627172432.11120-2-danielhb413@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
196 lines
6.7 KiB
C
196 lines
6.7 KiB
C
#ifndef QEMU_HW_SCSI_H
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#define QEMU_HW_SCSI_H
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#include "hw/qdev.h"
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#include "hw/block/block.h"
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#include "sysemu/sysemu.h"
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#include "scsi/utils.h"
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#include "qemu/notify.h"
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#define MAX_SCSI_DEVS 255
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typedef struct SCSIBus SCSIBus;
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typedef struct SCSIBusInfo SCSIBusInfo;
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typedef struct SCSIDevice SCSIDevice;
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typedef struct SCSIRequest SCSIRequest;
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typedef struct SCSIReqOps SCSIReqOps;
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#define SCSI_SENSE_BUF_SIZE_OLD 96
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#define SCSI_SENSE_BUF_SIZE 252
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struct SCSIRequest {
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SCSIBus *bus;
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SCSIDevice *dev;
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const SCSIReqOps *ops;
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uint32_t refcount;
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uint32_t tag;
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uint32_t lun;
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uint32_t status;
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void *hba_private;
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size_t resid;
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SCSICommand cmd;
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NotifierList cancel_notifiers;
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/* Note:
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* - fields before sense are initialized by scsi_req_alloc;
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* - sense[] is uninitialized;
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* - fields after sense are memset to 0 by scsi_req_alloc.
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* */
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uint8_t sense[SCSI_SENSE_BUF_SIZE];
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uint32_t sense_len;
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bool enqueued;
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bool io_canceled;
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bool retry;
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bool dma_started;
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BlockAIOCB *aiocb;
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QEMUSGList *sg;
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QTAILQ_ENTRY(SCSIRequest) next;
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};
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#define TYPE_SCSI_DEVICE "scsi-device"
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#define SCSI_DEVICE(obj) \
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OBJECT_CHECK(SCSIDevice, (obj), TYPE_SCSI_DEVICE)
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#define SCSI_DEVICE_CLASS(klass) \
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OBJECT_CLASS_CHECK(SCSIDeviceClass, (klass), TYPE_SCSI_DEVICE)
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#define SCSI_DEVICE_GET_CLASS(obj) \
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OBJECT_GET_CLASS(SCSIDeviceClass, (obj), TYPE_SCSI_DEVICE)
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typedef struct SCSIDeviceClass {
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DeviceClass parent_class;
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void (*realize)(SCSIDevice *dev, Error **errp);
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int (*parse_cdb)(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
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void *hba_private);
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SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun,
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uint8_t *buf, void *hba_private);
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void (*unit_attention_reported)(SCSIDevice *s);
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} SCSIDeviceClass;
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struct SCSIDevice
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{
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DeviceState qdev;
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VMChangeStateEntry *vmsentry;
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QEMUBH *bh;
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uint32_t id;
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BlockConf conf;
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SCSISense unit_attention;
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bool sense_is_ua;
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uint8_t sense[SCSI_SENSE_BUF_SIZE];
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uint32_t sense_len;
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QTAILQ_HEAD(, SCSIRequest) requests;
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uint32_t channel;
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uint32_t lun;
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int blocksize;
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int type;
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uint64_t max_lba;
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uint64_t wwn;
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uint64_t port_wwn;
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int scsi_version;
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int default_scsi_version;
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};
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extern const VMStateDescription vmstate_scsi_device;
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#define VMSTATE_SCSI_DEVICE(_field, _state) { \
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.name = (stringify(_field)), \
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.size = sizeof(SCSIDevice), \
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.vmsd = &vmstate_scsi_device, \
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.flags = VMS_STRUCT, \
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.offset = vmstate_offset_value(_state, _field, SCSIDevice), \
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}
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/* cdrom.c */
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int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track);
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int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num);
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/* scsi-bus.c */
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struct SCSIReqOps {
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size_t size;
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void (*free_req)(SCSIRequest *req);
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int32_t (*send_command)(SCSIRequest *req, uint8_t *buf);
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void (*read_data)(SCSIRequest *req);
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void (*write_data)(SCSIRequest *req);
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uint8_t *(*get_buf)(SCSIRequest *req);
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void (*save_request)(QEMUFile *f, SCSIRequest *req);
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void (*load_request)(QEMUFile *f, SCSIRequest *req);
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};
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struct SCSIBusInfo {
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int tcq;
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int max_channel, max_target, max_lun;
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int (*parse_cdb)(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
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void *hba_private);
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void (*transfer_data)(SCSIRequest *req, uint32_t arg);
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void (*complete)(SCSIRequest *req, uint32_t arg, size_t resid);
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void (*cancel)(SCSIRequest *req);
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void (*change)(SCSIBus *bus, SCSIDevice *dev, SCSISense sense);
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QEMUSGList *(*get_sg_list)(SCSIRequest *req);
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void (*save_request)(QEMUFile *f, SCSIRequest *req);
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void *(*load_request)(QEMUFile *f, SCSIRequest *req);
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void (*free_request)(SCSIBus *bus, void *priv);
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};
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#define TYPE_SCSI_BUS "SCSI"
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#define SCSI_BUS(obj) OBJECT_CHECK(SCSIBus, (obj), TYPE_SCSI_BUS)
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struct SCSIBus {
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BusState qbus;
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int busnr;
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SCSISense unit_attention;
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const SCSIBusInfo *info;
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};
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void scsi_bus_new(SCSIBus *bus, size_t bus_size, DeviceState *host,
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const SCSIBusInfo *info, const char *bus_name);
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static inline SCSIBus *scsi_bus_from_device(SCSIDevice *d)
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{
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return DO_UPCAST(SCSIBus, qbus, d->qdev.parent_bus);
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}
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SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockBackend *blk,
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int unit, bool removable, int bootindex,
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bool share_rw,
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const char *serial, Error **errp);
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void scsi_bus_legacy_handle_cmdline(SCSIBus *bus);
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void scsi_legacy_handle_cmdline(void);
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SCSIRequest *scsi_req_alloc(const SCSIReqOps *reqops, SCSIDevice *d,
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uint32_t tag, uint32_t lun, void *hba_private);
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SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun,
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uint8_t *buf, void *hba_private);
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int32_t scsi_req_enqueue(SCSIRequest *req);
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SCSIRequest *scsi_req_ref(SCSIRequest *req);
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void scsi_req_unref(SCSIRequest *req);
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int scsi_bus_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf,
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void *hba_private);
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int scsi_req_parse_cdb(SCSIDevice *dev, SCSICommand *cmd, uint8_t *buf);
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void scsi_req_build_sense(SCSIRequest *req, SCSISense sense);
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void scsi_req_print(SCSIRequest *req);
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void scsi_req_continue(SCSIRequest *req);
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void scsi_req_data(SCSIRequest *req, int len);
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void scsi_req_complete(SCSIRequest *req, int status);
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uint8_t *scsi_req_get_buf(SCSIRequest *req);
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int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len);
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void scsi_req_cancel_complete(SCSIRequest *req);
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void scsi_req_cancel(SCSIRequest *req);
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void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier);
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void scsi_req_retry(SCSIRequest *req);
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void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense);
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void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense);
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void scsi_device_report_change(SCSIDevice *dev, SCSISense sense);
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void scsi_device_unit_attention_reported(SCSIDevice *dev);
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void scsi_generic_read_device_identification(SCSIDevice *dev);
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int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed);
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int scsi_disk_emulate_vpd_page(SCSIRequest *req, uint8_t *outbuf);
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SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int target, int lun);
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/* scsi-generic.c. */
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extern const SCSIReqOps scsi_generic_req_ops;
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#endif
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