cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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virtio-scsi.h (2061B)

      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#define VIRTIO_SCSI_MAX_SECTORS 2048
     23
     24/* command-specific response values */
     25#define VIRTIO_SCSI_S_OK                     0x00
     26#define VIRTIO_SCSI_S_BAD_TARGET             0x03
     27
     28#define QEMU_CDROM_SIGNATURE "QEMU CD-ROM     "
     29
     30enum virtio_scsi_vq_id {
     31    VR_CONTROL  = 0,
     32    VR_EVENT    = 1,
     33    VR_REQUEST  = 2,
     34};
     35
     36struct VirtioScsiCmdReq {
     37    ScsiLun lun;
     38    uint64_t id;
     39    uint8_t task_attr;   /* = 0 = VIRTIO_SCSI_S_SIMPLE */
     40    uint8_t prio;
     41    uint8_t crn;         /* = 0 */
     42    uint8_t cdb[VIRTIO_SCSI_CDB_SIZE];
     43} __attribute__((packed));
     44typedef struct VirtioScsiCmdReq VirtioScsiCmdReq;
     45
     46struct VirtioScsiCmdResp {
     47        uint32_t sense_len;
     48        uint32_t residual;
     49        uint16_t status_qualifier;
     50        uint8_t status;      /* first check for .response    */
     51        uint8_t response;    /* then for .status             */
     52        uint8_t sense[VIRTIO_SCSI_SENSE_SIZE];
     53} __attribute__((packed));
     54typedef struct VirtioScsiCmdResp VirtioScsiCmdResp;
     55
     56static inline const char *virtio_scsi_response_msg(const VirtioScsiCmdResp *r)
     57{
     58    static char err_msg[] = "VS RESP=XX";
     59    uint8_t v = r->response;
     60
     61    fill_hex_val(err_msg + 8, &v, 1);
     62    return err_msg;
     63}
     64
     65static inline bool virtio_scsi_response_ok(const VirtioScsiCmdResp *r)
     66{
     67        return r->response == VIRTIO_SCSI_S_OK && r->status == CDB_STATUS_GOOD;
     68}
     69
     70int virtio_scsi_setup(VDev *vdev);
     71int virtio_scsi_read_many(VDev *vdev,
     72                          ulong sector, void *load_addr, int sec_num);
     73
     74#endif /* VIRTIO_SCSI_H */