hw: move target-independent files to subdirectories

This patch tackles all files that are compiled once, moving
them to subdirectories of hw/.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 2526 deletions

diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
deleted file mode 100644
index f52bd11d42..0000000000
--- a/hw/scsi-disk.c
+++ /dev/null
@@ -1,2526 +0,0 @@
-/*
- * SCSI Device emulation
- *
- * Copyright (c) 2006 CodeSourcery.
- * Based on code by Fabrice Bellard
- *
- * Written by Paul Brook
- * Modifications:
- *  2009-Dec-12 Artyom Tarasenko : implemented stamdard inquiry for the case
- *                                 when the allocation length of CDB is smaller
- *                                 than 36.
- *  2009-Oct-13 Artyom Tarasenko : implemented the block descriptor in the
- *                                 MODE SENSE response.
- *
- * This code is licensed under the LGPL.
- *
- * Note that this file only handles the SCSI architecture model and device
- * commands.  Emulation of interface/link layer protocols is handled by
- * the host adapter emulator.
- */
-
-//#define DEBUG_SCSI
-
-#ifdef DEBUG_SCSI
-#define DPRINTF(fmt, ...) \
-do { printf("scsi-disk: " fmt , ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) do {} while(0)
-#endif
-
-#include "qemu-common.h"
-#include "qemu/error-report.h"
-#include "hw/scsi/scsi.h"
-#include "block/scsi.h"
-#include "sysemu/sysemu.h"
-#include "sysemu/blockdev.h"
-#include "hw/block/block.h"
-#include "sysemu/dma.h"
-
-#ifdef __linux
-#include <scsi/sg.h>
-#endif
-
-#define SCSI_DMA_BUF_SIZE           131072
-#define SCSI_MAX_INQUIRY_LEN        256
-#define SCSI_MAX_MODE_LEN           256
-
-#define DEFAULT_DISCARD_GRANULARITY 4096
-
-typedef struct SCSIDiskState SCSIDiskState;
-
-typedef struct SCSIDiskReq {
-    SCSIRequest req;
-    /* Both sector and sector_count are in terms of qemu 512 byte blocks.  */
-    uint64_t sector;
-    uint32_t sector_count;
-    uint32_t buflen;
-    bool started;
-    struct iovec iov;
-    QEMUIOVector qiov;
-    BlockAcctCookie acct;
-} SCSIDiskReq;
-
-#define SCSI_DISK_F_REMOVABLE   0
-#define SCSI_DISK_F_DPOFUA      1
-
-struct SCSIDiskState
-{
-    SCSIDevice qdev;
-    uint32_t features;
-    bool media_changed;
-    bool media_event;
-    bool eject_request;
-    uint64_t wwn;
-    QEMUBH *bh;
-    char *version;
-    char *serial;
-    char *vendor;
-    char *product;
-    bool tray_open;
-    bool tray_locked;
-};
-
-static int scsi_handle_rw_error(SCSIDiskReq *r, int error);
-
-static void scsi_free_request(SCSIRequest *req)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
-    qemu_vfree(r->iov.iov_base);
-}
-
-/* Helper function for command completion with sense.  */
-static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense)
-{
-    DPRINTF("Command complete tag=0x%x sense=%d/%d/%d\n",
-            r->req.tag, sense.key, sense.asc, sense.ascq);
-    scsi_req_build_sense(&r->req, sense);
-    scsi_req_complete(&r->req, CHECK_CONDITION);
-}
-
-/* Cancel a pending data transfer.  */
-static void scsi_cancel_io(SCSIRequest *req)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
-    DPRINTF("Cancel tag=0x%x\n", req->tag);
-    if (r->req.aiocb) {
-        bdrv_aio_cancel(r->req.aiocb);
-
-        /* This reference was left in by scsi_*_data.  We take ownership of
-         * it the moment scsi_req_cancel is called, independent of whether
-         * bdrv_aio_cancel completes the request or not.  */
-        scsi_req_unref(&r->req);
-    }
-    r->req.aiocb = NULL;
-}
-
-static uint32_t scsi_init_iovec(SCSIDiskReq *r, size_t size)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
-    if (!r->iov.iov_base) {
-        r->buflen = size;
-        r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen);
-    }
-    r->iov.iov_len = MIN(r->sector_count * 512, r->buflen);
-    qemu_iovec_init_external(&r->qiov, &r->iov, 1);
-    return r->qiov.size / 512;
-}
-
-static void scsi_disk_save_request(QEMUFile *f, SCSIRequest *req)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
-    qemu_put_be64s(f, &r->sector);
-    qemu_put_be32s(f, &r->sector_count);
-    qemu_put_be32s(f, &r->buflen);
-    if (r->buflen) {
-        if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
-            qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len);
-        } else if (!req->retry) {
-            uint32_t len = r->iov.iov_len;
-            qemu_put_be32s(f, &len);
-            qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len);
-        }
-    }
-}
-
-static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
-    qemu_get_be64s(f, &r->sector);
-    qemu_get_be32s(f, &r->sector_count);
-    qemu_get_be32s(f, &r->buflen);
-    if (r->buflen) {
-        scsi_init_iovec(r, r->buflen);
-        if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
-            qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len);
-        } else if (!r->req.retry) {
-            uint32_t len;
-            qemu_get_be32s(f, &len);
-            r->iov.iov_len = len;
-            assert(r->iov.iov_len <= r->buflen);
-            qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len);
-        }
-    }
-
-    qemu_iovec_init_external(&r->qiov, &r->iov, 1);
-}
-
-static void scsi_aio_complete(void *opaque, int ret)
-{
-    SCSIDiskReq *r = (SCSIDiskReq *)opaque;
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
-    assert(r->req.aiocb != NULL);
-    r->req.aiocb = NULL;
-    bdrv_acct_done(s->qdev.conf.bs, &r->acct);
-    if (r->req.io_canceled) {
-        goto done;
-    }
-
-    if (ret < 0) {
-        if (scsi_handle_rw_error(r, -ret)) {
-            goto done;
-        }
-    }
-
-    scsi_req_complete(&r->req, GOOD);
-
-done:
-    if (!r->req.io_canceled) {
-        scsi_req_unref(&r->req);
-    }
-}
-
-static bool scsi_is_cmd_fua(SCSICommand *cmd)
-{
-    switch (cmd->buf[0]) {
-    case READ_10:
-    case READ_12:
-    case READ_16:
-    case WRITE_10:
-    case WRITE_12:
-    case WRITE_16:
-        return (cmd->buf[1] & 8) != 0;
-
-    case VERIFY_10:
-    case VERIFY_12:
-    case VERIFY_16:
-    case WRITE_VERIFY_10:
-    case WRITE_VERIFY_12:
-    case WRITE_VERIFY_16:
-        return true;
-
-    case READ_6:
-    case WRITE_6:
-    default:
-        return false;
-    }
-}
-
-static void scsi_write_do_fua(SCSIDiskReq *r)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
-    if (r->req.io_canceled) {
-        goto done;
-    }
-
-    if (scsi_is_cmd_fua(&r->req.cmd)) {
-        bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
-        r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r);
-        return;
-    }
-
-    scsi_req_complete(&r->req, GOOD);
-
-done:
-    if (!r->req.io_canceled) {
-        scsi_req_unref(&r->req);
-    }
-}
-
-static void scsi_dma_complete(void *opaque, int ret)
-{
-    SCSIDiskReq *r = (SCSIDiskReq *)opaque;
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
-    assert(r->req.aiocb != NULL);
-    r->req.aiocb = NULL;
-    bdrv_acct_done(s->qdev.conf.bs, &r->acct);
-    if (r->req.io_canceled) {
-        goto done;
-    }
-
-    if (ret < 0) {
-        if (scsi_handle_rw_error(r, -ret)) {
-            goto done;
-        }
-    }
-
-    r->sector += r->sector_count;
-    r->sector_count = 0;
-    if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
-        scsi_write_do_fua(r);
-        return;
-    } else {
-        scsi_req_complete(&r->req, GOOD);
-    }
-
-done:
-    if (!r->req.io_canceled) {
-        scsi_req_unref(&r->req);
-    }
-}
-
-static void scsi_read_complete(void * opaque, int ret)
-{
-    SCSIDiskReq *r = (SCSIDiskReq *)opaque;
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    int n;
-
-    assert(r->req.aiocb != NULL);
-    r->req.aiocb = NULL;
-    bdrv_acct_done(s->qdev.conf.bs, &r->acct);
-    if (r->req.io_canceled) {
-        goto done;
-    }
-
-    if (ret < 0) {
-        if (scsi_handle_rw_error(r, -ret)) {
-            goto done;
-        }
-    }
-
-    DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->qiov.size);
-
-    n = r->qiov.size / 512;
-    r->sector += n;
-    r->sector_count -= n;
-    scsi_req_data(&r->req, r->qiov.size);
-
-done:
-    if (!r->req.io_canceled) {
-        scsi_req_unref(&r->req);
-    }
-}
-
-/* Actually issue a read to the block device.  */
-static void scsi_do_read(void *opaque, int ret)
-{
-    SCSIDiskReq *r = opaque;
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    uint32_t n;
-
-    if (r->req.aiocb != NULL) {
-        r->req.aiocb = NULL;
-        bdrv_acct_done(s->qdev.conf.bs, &r->acct);
-    }
-    if (r->req.io_canceled) {
-        goto done;
-    }
-
-    if (ret < 0) {
-        if (scsi_handle_rw_error(r, -ret)) {
-            goto done;
-        }
-    }
-
-    /* The request is used as the AIO opaque value, so add a ref.  */
-    scsi_req_ref(&r->req);
-
-    if (r->req.sg) {
-        dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_READ);
-        r->req.resid -= r->req.sg->size;
-        r->req.aiocb = dma_bdrv_read(s->qdev.conf.bs, r->req.sg, r->sector,
-                                     scsi_dma_complete, r);
-    } else {
-        n = scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
-        bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_READ);
-        r->req.aiocb = bdrv_aio_readv(s->qdev.conf.bs, r->sector, &r->qiov, n,
-                                      scsi_read_complete, r);
-    }
-
-done:
-    if (!r->req.io_canceled) {
-        scsi_req_unref(&r->req);
-    }
-}
-
-/* Read more data from scsi device into buffer.  */
-static void scsi_read_data(SCSIRequest *req)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    bool first;
-
-    DPRINTF("Read sector_count=%d\n", r->sector_count);
-    if (r->sector_count == 0) {
-        /* This also clears the sense buffer for REQUEST SENSE.  */
-        scsi_req_complete(&r->req, GOOD);
-        return;
-    }
-
-    /* No data transfer may already be in progress */
-    assert(r->req.aiocb == NULL);
-
-    /* The request is used as the AIO opaque value, so add a ref.  */
-    scsi_req_ref(&r->req);
-    if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
-        DPRINTF("Data transfer direction invalid\n");
-        scsi_read_complete(r, -EINVAL);
-        return;
-    }
-
-    if (s->tray_open) {
-        scsi_read_complete(r, -ENOMEDIUM);
-        return;
-    }
-
-    first = !r->started;
-    r->started = true;
-    if (first && scsi_is_cmd_fua(&r->req.cmd)) {
-        bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
-        r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_do_read, r);
-    } else {
-        scsi_do_read(r, 0);
-    }
-}
-
-/*
- * scsi_handle_rw_error has two return values.  0 means that the error
- * must be ignored, 1 means that the error has been processed and the
- * caller should not do anything else for this request.  Note that
- * scsi_handle_rw_error always manages its reference counts, independent
- * of the return value.
- */
-static int scsi_handle_rw_error(SCSIDiskReq *r, int error)
-{
-    bool is_read = (r->req.cmd.xfer == SCSI_XFER_FROM_DEV);
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    BlockErrorAction action = bdrv_get_error_action(s->qdev.conf.bs, is_read, error);
-
-    if (action == BDRV_ACTION_REPORT) {
-        switch (error) {
-        case ENOMEDIUM:
-            scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
-            break;
-        case ENOMEM:
-            scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE));
-            break;
-        case EINVAL:
-            scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
-            break;
-        default:
-            scsi_check_condition(r, SENSE_CODE(IO_ERROR));
-            break;
-        }
-    }
-    bdrv_error_action(s->qdev.conf.bs, action, is_read, error);
-    if (action == BDRV_ACTION_STOP) {
-        scsi_req_retry(&r->req);
-    }
-    return action != BDRV_ACTION_IGNORE;
-}
-
-static void scsi_write_complete(void * opaque, int ret)
-{
-    SCSIDiskReq *r = (SCSIDiskReq *)opaque;
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    uint32_t n;
-
-    if (r->req.aiocb != NULL) {
-        r->req.aiocb = NULL;
-        bdrv_acct_done(s->qdev.conf.bs, &r->acct);
-    }
-    if (r->req.io_canceled) {
-        goto done;
-    }
-
-    if (ret < 0) {
-        if (scsi_handle_rw_error(r, -ret)) {
-            goto done;
-        }
-    }
-
-    n = r->qiov.size / 512;
-    r->sector += n;
-    r->sector_count -= n;
-    if (r->sector_count == 0) {
-        scsi_write_do_fua(r);
-        return;
-    } else {
-        scsi_init_iovec(r, SCSI_DMA_BUF_SIZE);
-        DPRINTF("Write complete tag=0x%x more=%zd\n", r->req.tag, r->qiov.size);
-        scsi_req_data(&r->req, r->qiov.size);
-    }
-
-done:
-    if (!r->req.io_canceled) {
-        scsi_req_unref(&r->req);
-    }
-}
-
-static void scsi_write_data(SCSIRequest *req)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    uint32_t n;
-
-    /* No data transfer may already be in progress */
-    assert(r->req.aiocb == NULL);
-
-    /* The request is used as the AIO opaque value, so add a ref.  */
-    scsi_req_ref(&r->req);
-    if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
-        DPRINTF("Data transfer direction invalid\n");
-        scsi_write_complete(r, -EINVAL);
-        return;
-    }
-
-    if (!r->req.sg && !r->qiov.size) {
-        /* Called for the first time.  Ask the driver to send us more data.  */
-        r->started = true;
-        scsi_write_complete(r, 0);
-        return;
-    }
-    if (s->tray_open) {
-        scsi_write_complete(r, -ENOMEDIUM);
-        return;
-    }
-
-    if (r->req.cmd.buf[0] == VERIFY_10 || r->req.cmd.buf[0] == VERIFY_12 ||
-        r->req.cmd.buf[0] == VERIFY_16) {
-        if (r->req.sg) {
-            scsi_dma_complete(r, 0);
-        } else {
-            scsi_write_complete(r, 0);
-        }
-        return;
-    }
-
-    if (r->req.sg) {
-        dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_WRITE);
-        r->req.resid -= r->req.sg->size;
-        r->req.aiocb = dma_bdrv_write(s->qdev.conf.bs, r->req.sg, r->sector,
-                                      scsi_dma_complete, r);
-    } else {
-        n = r->qiov.size / 512;
-        bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_WRITE);
-        r->req.aiocb = bdrv_aio_writev(s->qdev.conf.bs, r->sector, &r->qiov, n,
-                                       scsi_write_complete, r);
-    }
-}
-
-/* Return a pointer to the data buffer.  */
-static uint8_t *scsi_get_buf(SCSIRequest *req)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
-    return (uint8_t *)r->iov.iov_base;
-}
-
-static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
-    int buflen = 0;
-    int start;
-
-    if (req->cmd.buf[1] & 0x1) {
-        /* Vital product data */
-        uint8_t page_code = req->cmd.buf[2];
-
-        outbuf[buflen++] = s->qdev.type & 0x1f;
-        outbuf[buflen++] = page_code ; // this page
-        outbuf[buflen++] = 0x00;
-        outbuf[buflen++] = 0x00;
-        start = buflen;
-
-        switch (page_code) {
-        case 0x00: /* Supported page codes, mandatory */
-        {
-            DPRINTF("Inquiry EVPD[Supported pages] "
-                    "buffer size %zd\n", req->cmd.xfer);
-            outbuf[buflen++] = 0x00; // list of supported pages (this page)
-            if (s->serial) {
-                outbuf[buflen++] = 0x80; // unit serial number
-            }
-            outbuf[buflen++] = 0x83; // device identification
-            if (s->qdev.type == TYPE_DISK) {
-                outbuf[buflen++] = 0xb0; // block limits
-                outbuf[buflen++] = 0xb2; // thin provisioning
-            }
-            break;
-        }
-        case 0x80: /* Device serial number, optional */
-        {
-            int l;
-
-            if (!s->serial) {
-                DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
-                return -1;
-            }
-
-            l = strlen(s->serial);
-            if (l > 20) {
-                l = 20;
-            }
-
-            DPRINTF("Inquiry EVPD[Serial number] "
-                    "buffer size %zd\n", req->cmd.xfer);
-            memcpy(outbuf+buflen, s->serial, l);
-            buflen += l;
-            break;
-        }
-
-        case 0x83: /* Device identification page, mandatory */
-        {
-            const char *str = s->serial ?: bdrv_get_device_name(s->qdev.conf.bs);
-            int max_len = s->serial ? 20 : 255 - 8;
-            int id_len = strlen(str);
-
-            if (id_len > max_len) {
-                id_len = max_len;
-            }
-            DPRINTF("Inquiry EVPD[Device identification] "
-                    "buffer size %zd\n", req->cmd.xfer);
-
-            outbuf[buflen++] = 0x2; // ASCII
-            outbuf[buflen++] = 0;   // not officially assigned
-            outbuf[buflen++] = 0;   // reserved
-            outbuf[buflen++] = id_len; // length of data following
-            memcpy(outbuf+buflen, str, id_len);
-            buflen += id_len;
-
-            if (s->wwn) {
-                outbuf[buflen++] = 0x1; // Binary
-                outbuf[buflen++] = 0x3; // NAA
-                outbuf[buflen++] = 0;   // reserved
-                outbuf[buflen++] = 8;
-                stq_be_p(&outbuf[buflen], s->wwn);
-                buflen += 8;
-            }
-            break;
-        }
-        case 0xb0: /* block limits */
-        {
-            unsigned int unmap_sectors =
-                    s->qdev.conf.discard_granularity / s->qdev.blocksize;
-            unsigned int min_io_size =
-                    s->qdev.conf.min_io_size / s->qdev.blocksize;
-            unsigned int opt_io_size =
-                    s->qdev.conf.opt_io_size / s->qdev.blocksize;
-
-            if (s->qdev.type == TYPE_ROM) {
-                DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
-                        page_code);
-                return -1;
-            }
-            /* required VPD size with unmap support */
-            buflen = 0x40;
-            memset(outbuf + 4, 0, buflen - 4);
-
-            /* optimal transfer length granularity */
-            outbuf[6] = (min_io_size >> 8) & 0xff;
-            outbuf[7] = min_io_size & 0xff;
-
-            /* optimal transfer length */
-            outbuf[12] = (opt_io_size >> 24) & 0xff;
-            outbuf[13] = (opt_io_size >> 16) & 0xff;
-            outbuf[14] = (opt_io_size >> 8) & 0xff;
-            outbuf[15] = opt_io_size & 0xff;
-
-            /* optimal unmap granularity */
-            outbuf[28] = (unmap_sectors >> 24) & 0xff;
-            outbuf[29] = (unmap_sectors >> 16) & 0xff;
-            outbuf[30] = (unmap_sectors >> 8) & 0xff;
-            outbuf[31] = unmap_sectors & 0xff;
-            break;
-        }
-        case 0xb2: /* thin provisioning */
-        {
-            buflen = 8;
-            outbuf[4] = 0;
-            outbuf[5] = 0xe0; /* unmap & write_same 10/16 all supported */
-            outbuf[6] = s->qdev.conf.discard_granularity ? 2 : 1;
-            outbuf[7] = 0;
-            break;
-        }
-        default:
-            return -1;
-        }
-        /* done with EVPD */
-        assert(buflen - start <= 255);
-        outbuf[start - 1] = buflen - start;
-        return buflen;
-    }
-
-    /* Standard INQUIRY data */
-    if (req->cmd.buf[2] != 0) {
-        return -1;
-    }
-
-    /* PAGE CODE == 0 */
-    buflen = req->cmd.xfer;
-    if (buflen > SCSI_MAX_INQUIRY_LEN) {
-        buflen = SCSI_MAX_INQUIRY_LEN;
-    }
-
-    outbuf[0] = s->qdev.type & 0x1f;
-    outbuf[1] = (s->features & (1 << SCSI_DISK_F_REMOVABLE)) ? 0x80 : 0;
-
-    strpadcpy((char *) &outbuf[16], 16, s->product, ' ');
-    strpadcpy((char *) &outbuf[8], 8, s->vendor, ' ');
-
-    memset(&outbuf[32], 0, 4);
-    memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version)));
-    /*
-     * We claim conformance to SPC-3, which is required for guests
-     * to ask for modern features like READ CAPACITY(16) or the
-     * block characteristics VPD page by default.  Not all of SPC-3
-     * is actually implemented, but we're good enough.
-     */
-    outbuf[2] = 5;
-    outbuf[3] = 2 | 0x10; /* Format 2, HiSup */
-
-    if (buflen > 36) {
-        outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */
-    } else {
-        /* If the allocation length of CDB is too small,
-               the additional length is not adjusted */
-        outbuf[4] = 36 - 5;
-    }
-
-    /* Sync data transfer and TCQ.  */
-    outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0);
-    return buflen;
-}
-
-static inline bool media_is_dvd(SCSIDiskState *s)
-{
-    uint64_t nb_sectors;
-    if (s->qdev.type != TYPE_ROM) {
-        return false;
-    }
-    if (!bdrv_is_inserted(s->qdev.conf.bs)) {
-        return false;
-    }
-    bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
-    return nb_sectors > CD_MAX_SECTORS;
-}
-
-static inline bool media_is_cd(SCSIDiskState *s)
-{
-    uint64_t nb_sectors;
-    if (s->qdev.type != TYPE_ROM) {
-        return false;
-    }
-    if (!bdrv_is_inserted(s->qdev.conf.bs)) {
-        return false;
-    }
-    bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
-    return nb_sectors <= CD_MAX_SECTORS;
-}
-
-static int scsi_read_disc_information(SCSIDiskState *s, SCSIDiskReq *r,
-                                      uint8_t *outbuf)
-{
-    uint8_t type = r->req.cmd.buf[1] & 7;
-
-    if (s->qdev.type != TYPE_ROM) {
-        return -1;
-    }
-
-    /* Types 1/2 are only defined for Blu-Ray.  */
-    if (type != 0) {
-        scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
-        return -1;
-    }
-
-    memset(outbuf, 0, 34);
-    outbuf[1] = 32;
-    outbuf[2] = 0xe; /* last session complete, disc finalized */
-    outbuf[3] = 1;   /* first track on disc */
-    outbuf[4] = 1;   /* # of sessions */
-    outbuf[5] = 1;   /* first track of last session */
-    outbuf[6] = 1;   /* last track of last session */
-    outbuf[7] = 0x20; /* unrestricted use */
-    outbuf[8] = 0x00; /* CD-ROM or DVD-ROM */
-    /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
-    /* 12-23: not meaningful for CD-ROM or DVD-ROM */
-    /* 24-31: disc bar code */
-    /* 32: disc application code */
-    /* 33: number of OPC tables */
-
-    return 34;
-}
-
-static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r,
-                                   uint8_t *outbuf)
-{
-    static const int rds_caps_size[5] = {
-        [0] = 2048 + 4,
-        [1] = 4 + 4,
-        [3] = 188 + 4,
-        [4] = 2048 + 4,
-    };
-
-    uint8_t media = r->req.cmd.buf[1];
-    uint8_t layer = r->req.cmd.buf[6];
-    uint8_t format = r->req.cmd.buf[7];
-    int size = -1;
-
-    if (s->qdev.type != TYPE_ROM) {
-        return -1;
-    }
-    if (media != 0) {
-        scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
-        return -1;
-    }
-
-    if (format != 0xff) {
-        if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
-            scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
-            return -1;
-        }
-        if (media_is_cd(s)) {
-            scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT));
-            return -1;
-        }
-        if (format >= ARRAY_SIZE(rds_caps_size)) {
-            return -1;
-        }
-        size = rds_caps_size[format];
-        memset(outbuf, 0, size);
-    }
-
-    switch (format) {
-    case 0x00: {
-        /* Physical format information */
-        uint64_t nb_sectors;
-        if (layer != 0) {
-            goto fail;
-        }
-        bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
-
-        outbuf[4] = 1;   /* DVD-ROM, part version 1 */
-        outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */
-        outbuf[6] = 1;   /* one layer, read-only (per MMC-2 spec) */
-        outbuf[7] = 0;   /* default densities */
-
-        stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */
-        stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */
-        break;
-    }
-
-    case 0x01: /* DVD copyright information, all zeros */
-        break;
-
-    case 0x03: /* BCA information - invalid field for no BCA info */
-        return -1;
-
-    case 0x04: /* DVD disc manufacturing information, all zeros */
-        break;
-
-    case 0xff: { /* List capabilities */
-        int i;
-        size = 4;
-        for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) {
-            if (!rds_caps_size[i]) {
-                continue;
-            }
-            outbuf[size] = i;
-            outbuf[size + 1] = 0x40; /* Not writable, readable */
-            stw_be_p(&outbuf[size + 2], rds_caps_size[i]);
-            size += 4;
-        }
-        break;
-     }
-
-    default:
-        return -1;
-    }
-
-    /* Size of buffer, not including 2 byte size field */
-    stw_be_p(outbuf, size - 2);
-    return size;
-
-fail:
-    return -1;
-}
-
-static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf)
-{
-    uint8_t event_code, media_status;
-
-    media_status = 0;
-    if (s->tray_open) {
-        media_status = MS_TRAY_OPEN;
-    } else if (bdrv_is_inserted(s->qdev.conf.bs)) {
-        media_status = MS_MEDIA_PRESENT;
-    }
-
-    /* Event notification descriptor */
-    event_code = MEC_NO_CHANGE;
-    if (media_status != MS_TRAY_OPEN) {
-        if (s->media_event) {
-            event_code = MEC_NEW_MEDIA;
-            s->media_event = false;
-        } else if (s->eject_request) {
-            event_code = MEC_EJECT_REQUESTED;
-            s->eject_request = false;
-        }
-    }
-
-    outbuf[0] = event_code;
-    outbuf[1] = media_status;
-
-    /* These fields are reserved, just clear them. */
-    outbuf[2] = 0;
-    outbuf[3] = 0;
-    return 4;
-}
-
-static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r,
-                                              uint8_t *outbuf)
-{
-    int size;
-    uint8_t *buf = r->req.cmd.buf;
-    uint8_t notification_class_request = buf[4];
-    if (s->qdev.type != TYPE_ROM) {
-        return -1;
-    }
-    if ((buf[1] & 1) == 0) {
-        /* asynchronous */
-        return -1;
-    }
-
-    size = 4;
-    outbuf[0] = outbuf[1] = 0;
-    outbuf[3] = 1 << GESN_MEDIA; /* supported events */
-    if (notification_class_request & (1 << GESN_MEDIA)) {
-        outbuf[2] = GESN_MEDIA;
-        size += scsi_event_status_media(s, &outbuf[size]);
-    } else {
-        outbuf[2] = 0x80;
-    }
-    stw_be_p(outbuf, size - 4);
-    return size;
-}
-
-static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf)
-{
-    int current;
-
-    if (s->qdev.type != TYPE_ROM) {
-        return -1;
-    }
-    current = media_is_dvd(s) ? MMC_PROFILE_DVD_ROM : MMC_PROFILE_CD_ROM;
-    memset(outbuf, 0, 40);
-    stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */
-    stw_be_p(&outbuf[6], current);
-    /* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
-    outbuf[10] = 0x03; /* persistent, current */
-    outbuf[11] = 8; /* two profiles */
-    stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM);
-    outbuf[14] = (current == MMC_PROFILE_DVD_ROM);
-    stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM);
-    outbuf[18] = (current == MMC_PROFILE_CD_ROM);
-    /* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
-    stw_be_p(&outbuf[20], 1);
-    outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */
-    outbuf[23] = 8;
-    stl_be_p(&outbuf[24], 1); /* SCSI */
-    outbuf[28] = 1; /* DBE = 1, mandatory */
-    /* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
-    stw_be_p(&outbuf[32], 3);
-    outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */
-    outbuf[35] = 4;
-    outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */
-    /* TODO: Random readable, CD read, DVD read, drive serial number,
-       power management */
-    return 40;
-}
-
-static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf)
-{
-    if (s->qdev.type != TYPE_ROM) {
-        return -1;
-    }
-    memset(outbuf, 0, 8);
-    outbuf[5] = 1; /* CD-ROM */
-    return 8;
-}
-
-static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf,
-                           int page_control)
-{
-    static const int mode_sense_valid[0x3f] = {
-        [MODE_PAGE_HD_GEOMETRY]            = (1 << TYPE_DISK),
-        [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
-        [MODE_PAGE_CACHING]                = (1 << TYPE_DISK) | (1 << TYPE_ROM),
-        [MODE_PAGE_R_W_ERROR]              = (1 << TYPE_DISK) | (1 << TYPE_ROM),
-        [MODE_PAGE_AUDIO_CTL]              = (1 << TYPE_ROM),
-        [MODE_PAGE_CAPABILITIES]           = (1 << TYPE_ROM),
-    };
-
-    uint8_t *p = *p_outbuf + 2;
-    int length;
-
-    if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) {
-        return -1;
-    }
-
-    /*
-     * If Changeable Values are requested, a mask denoting those mode parameters
-     * that are changeable shall be returned. As we currently don't support
-     * parameter changes via MODE_SELECT all bits are returned set to zero.
-     * The buffer was already menset to zero by the caller of this function.
-     *
-     * The offsets here are off by two compared to the descriptions in the
-     * SCSI specs, because those include a 2-byte header.  This is unfortunate,
-     * but it is done so that offsets are consistent within our implementation
-     * of MODE SENSE and MODE SELECT.  MODE SELECT has to deal with both
-     * 2-byte and 4-byte headers.
-     */
-    switch (page) {
-    case MODE_PAGE_HD_GEOMETRY:
-        length = 0x16;
-        if (page_control == 1) { /* Changeable Values */
-            break;
-        }
-        /* if a geometry hint is available, use it */
-        p[0] = (s->qdev.conf.cyls >> 16) & 0xff;
-        p[1] = (s->qdev.conf.cyls >> 8) & 0xff;
-        p[2] = s->qdev.conf.cyls & 0xff;
-        p[3] = s->qdev.conf.heads & 0xff;
-        /* Write precomp start cylinder, disabled */
-        p[4] = (s->qdev.conf.cyls >> 16) & 0xff;
-        p[5] = (s->qdev.conf.cyls >> 8) & 0xff;
-        p[6] = s->qdev.conf.cyls & 0xff;
-        /* Reduced current start cylinder, disabled */
-        p[7] = (s->qdev.conf.cyls >> 16) & 0xff;
-        p[8] = (s->qdev.conf.cyls >> 8) & 0xff;
-        p[9] = s->qdev.conf.cyls & 0xff;
-        /* Device step rate [ns], 200ns */
-        p[10] = 0;
-        p[11] = 200;
-        /* Landing zone cylinder */
-        p[12] = 0xff;
-        p[13] =  0xff;
-        p[14] = 0xff;
-        /* Medium rotation rate [rpm], 5400 rpm */
-        p[18] = (5400 >> 8) & 0xff;
-        p[19] = 5400 & 0xff;
-        break;
-
-    case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY:
-        length = 0x1e;
-        if (page_control == 1) { /* Changeable Values */
-            break;
-        }
-        /* Transfer rate [kbit/s], 5Mbit/s */
-        p[0] = 5000 >> 8;
-        p[1] = 5000 & 0xff;
-        /* if a geometry hint is available, use it */
-        p[2] = s->qdev.conf.heads & 0xff;
-        p[3] = s->qdev.conf.secs & 0xff;
-        p[4] = s->qdev.blocksize >> 8;
-        p[6] = (s->qdev.conf.cyls >> 8) & 0xff;
-        p[7] = s->qdev.conf.cyls & 0xff;
-        /* Write precomp start cylinder, disabled */
-        p[8] = (s->qdev.conf.cyls >> 8) & 0xff;
-        p[9] = s->qdev.conf.cyls & 0xff;
-        /* Reduced current start cylinder, disabled */
-        p[10] = (s->qdev.conf.cyls >> 8) & 0xff;
-        p[11] = s->qdev.conf.cyls & 0xff;
-        /* Device step rate [100us], 100us */
-        p[12] = 0;
-        p[13] = 1;
-        /* Device step pulse width [us], 1us */
-        p[14] = 1;
-        /* Device head settle delay [100us], 100us */
-        p[15] = 0;
-        p[16] = 1;
-        /* Motor on delay [0.1s], 0.1s */
-        p[17] = 1;
-        /* Motor off delay [0.1s], 0.1s */
-        p[18] = 1;
-        /* Medium rotation rate [rpm], 5400 rpm */
-        p[26] = (5400 >> 8) & 0xff;
-        p[27] = 5400 & 0xff;
-        break;
-
-    case MODE_PAGE_CACHING:
-        length = 0x12;
-        if (page_control == 1 || /* Changeable Values */
-            bdrv_enable_write_cache(s->qdev.conf.bs)) {
-            p[0] = 4; /* WCE */
-        }
-        break;
-
-    case MODE_PAGE_R_W_ERROR:
-        length = 10;
-        if (page_control == 1) { /* Changeable Values */
-            break;
-        }
-        p[0] = 0x80; /* Automatic Write Reallocation Enabled */
-        if (s->qdev.type == TYPE_ROM) {
-            p[1] = 0x20; /* Read Retry Count */
-        }
-        break;
-
-    case MODE_PAGE_AUDIO_CTL:
-        length = 14;
-        break;
-
-    case MODE_PAGE_CAPABILITIES:
-        length = 0x14;
-        if (page_control == 1) { /* Changeable Values */
-            break;
-        }
-
-        p[0] = 0x3b; /* CD-R & CD-RW read */
-        p[1] = 0; /* Writing not supported */
-        p[2] = 0x7f; /* Audio, composite, digital out,
-                        mode 2 form 1&2, multi session */
-        p[3] = 0xff; /* CD DA, DA accurate, RW supported,
-                        RW corrected, C2 errors, ISRC,
-                        UPC, Bar code */
-        p[4] = 0x2d | (s->tray_locked ? 2 : 0);
-        /* Locking supported, jumper present, eject, tray */
-        p[5] = 0; /* no volume & mute control, no
-                     changer */
-        p[6] = (50 * 176) >> 8; /* 50x read speed */
-        p[7] = (50 * 176) & 0xff;
-        p[8] = 2 >> 8; /* Two volume levels */
-        p[9] = 2 & 0xff;
-        p[10] = 2048 >> 8; /* 2M buffer */
-        p[11] = 2048 & 0xff;
-        p[12] = (16 * 176) >> 8; /* 16x read speed current */
-        p[13] = (16 * 176) & 0xff;
-        p[16] = (16 * 176) >> 8; /* 16x write speed */
-        p[17] = (16 * 176) & 0xff;
-        p[18] = (16 * 176) >> 8; /* 16x write speed current */
-        p[19] = (16 * 176) & 0xff;
-        break;
-
-    default:
-        return -1;
-    }
-
-    assert(length < 256);
-    (*p_outbuf)[0] = page;
-    (*p_outbuf)[1] = length;
-    *p_outbuf += length + 2;
-    return length + 2;
-}
-
-static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    uint64_t nb_sectors;
-    bool dbd;
-    int page, buflen, ret, page_control;
-    uint8_t *p;
-    uint8_t dev_specific_param;
-
-    dbd = (r->req.cmd.buf[1] & 0x8) != 0;
-    page = r->req.cmd.buf[2] & 0x3f;
-    page_control = (r->req.cmd.buf[2] & 0xc0) >> 6;
-    DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
-        (r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 10, page, r->req.cmd.xfer, page_control);
-    memset(outbuf, 0, r->req.cmd.xfer);
-    p = outbuf;
-
-    if (s->qdev.type == TYPE_DISK) {
-        dev_specific_param = s->features & (1 << SCSI_DISK_F_DPOFUA) ? 0x10 : 0;
-        if (bdrv_is_read_only(s->qdev.conf.bs)) {
-            dev_specific_param |= 0x80; /* Readonly.  */
-        }
-    } else {
-        /* MMC prescribes that CD/DVD drives have no block descriptors,
-         * and defines no device-specific parameter.  */
-        dev_specific_param = 0x00;
-        dbd = true;
-    }
-
-    if (r->req.cmd.buf[0] == MODE_SENSE) {
-        p[1] = 0; /* Default media type.  */
-        p[2] = dev_specific_param;
-        p[3] = 0; /* Block descriptor length.  */
-        p += 4;
-    } else { /* MODE_SENSE_10 */
-        p[2] = 0; /* Default media type.  */
-        p[3] = dev_specific_param;
-        p[6] = p[7] = 0; /* Block descriptor length.  */
-        p += 8;
-    }
-
-    bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
-    if (!dbd && nb_sectors) {
-        if (r->req.cmd.buf[0] == MODE_SENSE) {
-            outbuf[3] = 8; /* Block descriptor length  */
-        } else { /* MODE_SENSE_10 */
-            outbuf[7] = 8; /* Block descriptor length  */
-        }
-        nb_sectors /= (s->qdev.blocksize / 512);
-        if (nb_sectors > 0xffffff) {
-            nb_sectors = 0;
-        }
-        p[0] = 0; /* media density code */
-        p[1] = (nb_sectors >> 16) & 0xff;
-        p[2] = (nb_sectors >> 8) & 0xff;
-        p[3] = nb_sectors & 0xff;
-        p[4] = 0; /* reserved */
-        p[5] = 0; /* bytes 5-7 are the sector size in bytes */
-        p[6] = s->qdev.blocksize >> 8;
-        p[7] = 0;
-        p += 8;
-    }
-
-    if (page_control == 3) {
-        /* Saved Values */
-        scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED));
-        return -1;
-    }
-
-    if (page == 0x3f) {
-        for (page = 0; page <= 0x3e; page++) {
-            mode_sense_page(s, page, &p, page_control);
-        }
-    } else {
-        ret = mode_sense_page(s, page, &p, page_control);
-        if (ret == -1) {
-            return -1;
-        }
-    }
-
-    buflen = p - outbuf;
-    /*
-     * The mode data length field specifies the length in bytes of the
-     * following data that is available to be transferred. The mode data
-     * length does not include itself.
-     */
-    if (r->req.cmd.buf[0] == MODE_SENSE) {
-        outbuf[0] = buflen - 1;
-    } else { /* MODE_SENSE_10 */
-        outbuf[0] = ((buflen - 2) >> 8) & 0xff;
-        outbuf[1] = (buflen - 2) & 0xff;
-    }
-    return buflen;
-}
-
-static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
-    int start_track, format, msf, toclen;
-    uint64_t nb_sectors;
-
-    msf = req->cmd.buf[1] & 2;
-    format = req->cmd.buf[2] & 0xf;
-    start_track = req->cmd.buf[6];
-    bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
-    DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1);
-    nb_sectors /= s->qdev.blocksize / 512;
-    switch (format) {
-    case 0:
-        toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track);
-        break;
-    case 1:
-        /* multi session : only a single session defined */
-        toclen = 12;
-        memset(outbuf, 0, 12);
-        outbuf[1] = 0x0a;
-        outbuf[2] = 0x01;
-        outbuf[3] = 0x01;
-        break;
-    case 2:
-        toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track);
-        break;
-    default:
-        return -1;
-    }
-    return toclen;
-}
-
-static int scsi_disk_emulate_start_stop(SCSIDiskReq *r)
-{
-    SCSIRequest *req = &r->req;
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
-    bool start = req->cmd.buf[4] & 1;
-    bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */
-    int pwrcnd = req->cmd.buf[4] & 0xf0;
-
-    if (pwrcnd) {
-        /* eject/load only happens for power condition == 0 */
-        return 0;
-    }
-
-    if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) && loej) {
-        if (!start && !s->tray_open && s->tray_locked) {
-            scsi_check_condition(r,
-                                 bdrv_is_inserted(s->qdev.conf.bs)
-                                 ? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED)
-                                 : SENSE_CODE(NOT_READY_REMOVAL_PREVENTED));
-            return -1;
-        }
-
-        if (s->tray_open != !start) {
-            bdrv_eject(s->qdev.conf.bs, !start);
-            s->tray_open = !start;
-        }
-    }
-    return 0;
-}
-
-static void scsi_disk_emulate_read_data(SCSIRequest *req)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-    int buflen = r->iov.iov_len;
-
-    if (buflen) {
-        DPRINTF("Read buf_len=%d\n", buflen);
-        r->iov.iov_len = 0;
-        r->started = true;
-        scsi_req_data(&r->req, buflen);
-        return;
-    }
-
-    /* This also clears the sense buffer for REQUEST SENSE.  */
-    scsi_req_complete(&r->req, GOOD);
-}
-
-static int scsi_disk_check_mode_select(SCSIDiskState *s, int page,
-                                       uint8_t *inbuf, int inlen)
-{
-    uint8_t mode_current[SCSI_MAX_MODE_LEN];
-    uint8_t mode_changeable[SCSI_MAX_MODE_LEN];
-    uint8_t *p;
-    int len, expected_len, changeable_len, i;
-
-    /* The input buffer does not include the page header, so it is
-     * off by 2 bytes.
-     */
-    expected_len = inlen + 2;
-    if (expected_len > SCSI_MAX_MODE_LEN) {
-        return -1;
-    }
-
-    p = mode_current;
-    memset(mode_current, 0, inlen + 2);
-    len = mode_sense_page(s, page, &p, 0);
-    if (len < 0 || len != expected_len) {
-        return -1;
-    }
-
-    p = mode_changeable;
-    memset(mode_changeable, 0, inlen + 2);
-    changeable_len = mode_sense_page(s, page, &p, 1);
-    assert(changeable_len == len);
-
-    /* Check that unchangeable bits are the same as what MODE SENSE
-     * would return.
-     */
-    for (i = 2; i < len; i++) {
-        if (((mode_current[i] ^ inbuf[i - 2]) & ~mode_changeable[i]) != 0) {
-            return -1;
-        }
-    }
-    return 0;
-}
-
-static void scsi_disk_apply_mode_select(SCSIDiskState *s, int page, uint8_t *p)
-{
-    switch (page) {
-    case MODE_PAGE_CACHING:
-        bdrv_set_enable_write_cache(s->qdev.conf.bs, (p[0] & 4) != 0);
-        break;
-
-    default:
-        break;
-    }
-}
-
-static int mode_select_pages(SCSIDiskReq *r, uint8_t *p, int len, bool change)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-
-    while (len > 0) {
-        int page, subpage, page_len;
-
-        /* Parse both possible formats for the mode page headers.  */
-        page = p[0] & 0x3f;
-        if (p[0] & 0x40) {
-            if (len < 4) {
-                goto invalid_param_len;
-            }
-            subpage = p[1];
-            page_len = lduw_be_p(&p[2]);
-            p += 4;
-            len -= 4;
-        } else {
-            if (len < 2) {
-                goto invalid_param_len;
-            }
-            subpage = 0;
-            page_len = p[1];
-            p += 2;
-            len -= 2;
-        }
-
-        if (subpage) {
-            goto invalid_param;
-        }
-        if (page_len > len) {
-            goto invalid_param_len;
-        }
-
-        if (!change) {
-            if (scsi_disk_check_mode_select(s, page, p, page_len) < 0) {
-                goto invalid_param;
-            }
-        } else {
-            scsi_disk_apply_mode_select(s, page, p);
-        }
-
-        p += page_len;
-        len -= page_len;
-    }
-    return 0;
-
-invalid_param:
-    scsi_check_condition(r, SENSE_CODE(INVALID_PARAM));
-    return -1;
-
-invalid_param_len:
-    scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
-    return -1;
-}
-
-static void scsi_disk_emulate_mode_select(SCSIDiskReq *r, uint8_t *inbuf)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    uint8_t *p = inbuf;
-    int cmd = r->req.cmd.buf[0];
-    int len = r->req.cmd.xfer;
-    int hdr_len = (cmd == MODE_SELECT ? 4 : 8);
-    int bd_len;
-    int pass;
-
-    /* We only support PF=1, SP=0.  */
-    if ((r->req.cmd.buf[1] & 0x11) != 0x10) {
-        goto invalid_field;
-    }
-
-    if (len < hdr_len) {
-        goto invalid_param_len;
-    }
-
-    bd_len = (cmd == MODE_SELECT ? p[3] : lduw_be_p(&p[6]));
-    len -= hdr_len;
-    p += hdr_len;
-    if (len < bd_len) {
-        goto invalid_param_len;
-    }
-    if (bd_len != 0 && bd_len != 8) {
-        goto invalid_param;
-    }
-
-    len -= bd_len;
-    p += bd_len;
-
-    /* Ensure no change is made if there is an error!  */
-    for (pass = 0; pass < 2; pass++) {
-        if (mode_select_pages(r, p, len, pass == 1) < 0) {
-            assert(pass == 0);
-            return;
-        }
-    }
-    if (!bdrv_enable_write_cache(s->qdev.conf.bs)) {
-        /* The request is used as the AIO opaque value, so add a ref.  */
-        scsi_req_ref(&r->req);
-        bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
-        r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r);
-        return;
-    }
-
-    scsi_req_complete(&r->req, GOOD);
-    return;
-
-invalid_param:
-    scsi_check_condition(r, SENSE_CODE(INVALID_PARAM));
-    return;
-
-invalid_param_len:
-    scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
-    return;
-
-invalid_field:
-    scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
-}
-
-static inline bool check_lba_range(SCSIDiskState *s,
-                                   uint64_t sector_num, uint32_t nb_sectors)
-{
-    /*
-     * The first line tests that no overflow happens when computing the last
-     * sector.  The second line tests that the last accessed sector is in
-     * range.
-     *
-     * Careful, the computations should not underflow for nb_sectors == 0,
-     * and a 0-block read to the first LBA beyond the end of device is
-     * valid.
-     */
-    return (sector_num <= sector_num + nb_sectors &&
-            sector_num + nb_sectors <= s->qdev.max_lba + 1);
-}
-
-typedef struct UnmapCBData {
-    SCSIDiskReq *r;
-    uint8_t *inbuf;
-    int count;
-} UnmapCBData;
-
-static void scsi_unmap_complete(void *opaque, int ret)
-{
-    UnmapCBData *data = opaque;
-    SCSIDiskReq *r = data->r;
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
-    uint64_t sector_num;
-    uint32_t nb_sectors;
-
-    r->req.aiocb = NULL;
-    if (r->req.io_canceled) {
-        goto done;
-    }
-
-    if (ret < 0) {
-        if (scsi_handle_rw_error(r, -ret)) {
-            goto done;
-        }
-    }
-
-    if (data->count > 0) {
-        sector_num = ldq_be_p(&data->inbuf[0]);
-        nb_sectors = ldl_be_p(&data->inbuf[8]) & 0xffffffffULL;
-        if (!check_lba_range(s, sector_num, nb_sectors)) {
-            scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
-            goto done;
-        }
-
-        r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs,
-                                        sector_num * (s->qdev.blocksize / 512),
-                                        nb_sectors * (s->qdev.blocksize / 512),
-                                        scsi_unmap_complete, data);
-        data->count--;
-        data->inbuf += 16;
-        return;
-    }
-
-    scsi_req_complete(&r->req, GOOD);
-
-done:
-    if (!r->req.io_canceled) {
-        scsi_req_unref(&r->req);
-    }
-    g_free(data);
-}
-
-static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf)
-{
-    uint8_t *p = inbuf;
-    int len = r->req.cmd.xfer;
-    UnmapCBData *data;
-
-    if (len < 8) {
-        goto invalid_param_len;
-    }
-    if (len < lduw_be_p(&p[0]) + 2) {
-        goto invalid_param_len;
-    }
-    if (len < lduw_be_p(&p[2]) + 8) {
-        goto invalid_param_len;
-    }
-    if (lduw_be_p(&p[2]) & 15) {
-        goto invalid_param_len;
-    }
-
-    data = g_new0(UnmapCBData, 1);
-    data->r = r;
-    data->inbuf = &p[8];
-    data->count = lduw_be_p(&p[2]) >> 4;
-
-    /* The matching unref is in scsi_unmap_complete, before data is freed.  */
-    scsi_req_ref(&r->req);
-    scsi_unmap_complete(data, 0);
-    return;
-
-invalid_param_len:
-    scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN));
-}
-
-static void scsi_disk_emulate_write_data(SCSIRequest *req)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-
-    if (r->iov.iov_len) {
-        int buflen = r->iov.iov_len;
-        DPRINTF("Write buf_len=%d\n", buflen);
-        r->iov.iov_len = 0;
-        scsi_req_data(&r->req, buflen);
-        return;
-    }
-
-    switch (req->cmd.buf[0]) {
-    case MODE_SELECT:
-    case MODE_SELECT_10:
-        /* This also clears the sense buffer for REQUEST SENSE.  */
-        scsi_disk_emulate_mode_select(r, r->iov.iov_base);
-        break;
-
-    case UNMAP:
-        scsi_disk_emulate_unmap(r, r->iov.iov_base);
-        break;
-
-    default:
-        abort();
-    }
-}
-
-static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
-    uint64_t nb_sectors;
-    uint8_t *outbuf;
-    int buflen;
-
-    switch (req->cmd.buf[0]) {
-    case INQUIRY:
-    case MODE_SENSE:
-    case MODE_SENSE_10:
-    case RESERVE:
-    case RESERVE_10:
-    case RELEASE:
-    case RELEASE_10:
-    case START_STOP:
-    case ALLOW_MEDIUM_REMOVAL:
-    case GET_CONFIGURATION:
-    case GET_EVENT_STATUS_NOTIFICATION:
-    case MECHANISM_STATUS:
-    case REQUEST_SENSE:
-        break;
-
-    default:
-        if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
-            scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
-            return 0;
-        }
-        break;
-    }
-
-    /*
-     * FIXME: we shouldn't return anything bigger than 4k, but the code
-     * requires the buffer to be as big as req->cmd.xfer in several
-     * places.  So, do not allow CDBs with a very large ALLOCATION
-     * LENGTH.  The real fix would be to modify scsi_read_data and
-     * dma_buf_read, so that they return data beyond the buflen
-     * as all zeros.
-     */
-    if (req->cmd.xfer > 65536) {
-        goto illegal_request;
-    }
-    r->buflen = MAX(4096, req->cmd.xfer);
-
-    if (!r->iov.iov_base) {
-        r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen);
-    }
-
-    buflen = req->cmd.xfer;
-    outbuf = r->iov.iov_base;
-    memset(outbuf, 0, r->buflen);
-    switch (req->cmd.buf[0]) {
-    case TEST_UNIT_READY:
-        assert(!s->tray_open && bdrv_is_inserted(s->qdev.conf.bs));
-        break;
-    case INQUIRY:
-        buflen = scsi_disk_emulate_inquiry(req, outbuf);
-        if (buflen < 0) {
-            goto illegal_request;
-        }
-        break;
-    case MODE_SENSE:
-    case MODE_SENSE_10:
-        buflen = scsi_disk_emulate_mode_sense(r, outbuf);
-        if (buflen < 0) {
-            goto illegal_request;
-        }
-        break;
-    case READ_TOC:
-        buflen = scsi_disk_emulate_read_toc(req, outbuf);
-        if (buflen < 0) {
-            goto illegal_request;
-        }
-        break;
-    case RESERVE:
-        if (req->cmd.buf[1] & 1) {
-            goto illegal_request;
-        }
-        break;
-    case RESERVE_10:
-        if (req->cmd.buf[1] & 3) {
-            goto illegal_request;
-        }
-        break;
-    case RELEASE:
-        if (req->cmd.buf[1] & 1) {
-            goto illegal_request;
-        }
-        break;
-    case RELEASE_10:
-        if (req->cmd.buf[1] & 3) {
-            goto illegal_request;
-        }
-        break;
-    case START_STOP:
-        if (scsi_disk_emulate_start_stop(r) < 0) {
-            return 0;
-        }
-        break;
-    case ALLOW_MEDIUM_REMOVAL:
-        s->tray_locked = req->cmd.buf[4] & 1;
-        bdrv_lock_medium(s->qdev.conf.bs, req->cmd.buf[4] & 1);
-        break;
-    case READ_CAPACITY_10:
-        /* The normal LEN field for this command is zero.  */
-        memset(outbuf, 0, 8);
-        bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
-        if (!nb_sectors) {
-            scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
-            return 0;
-        }
-        if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) {
-            goto illegal_request;
-        }
-        nb_sectors /= s->qdev.blocksize / 512;
-        /* Returned value is the address of the last sector.  */
-        nb_sectors--;
-        /* Remember the new size for read/write sanity checking. */
-        s->qdev.max_lba = nb_sectors;
-        /* Clip to 2TB, instead of returning capacity modulo 2TB. */
-        if (nb_sectors > UINT32_MAX) {
-            nb_sectors = UINT32_MAX;
-        }
-        outbuf[0] = (nb_sectors >> 24) & 0xff;
-        outbuf[1] = (nb_sectors >> 16) & 0xff;
-        outbuf[2] = (nb_sectors >> 8) & 0xff;
-        outbuf[3] = nb_sectors & 0xff;
-        outbuf[4] = 0;
-        outbuf[5] = 0;
-        outbuf[6] = s->qdev.blocksize >> 8;
-        outbuf[7] = 0;
-        break;
-    case REQUEST_SENSE:
-        /* Just return "NO SENSE".  */
-        buflen = scsi_build_sense(NULL, 0, outbuf, r->buflen,
-                                  (req->cmd.buf[1] & 1) == 0);
-        if (buflen < 0) {
-            goto illegal_request;
-        }
-        break;
-    case MECHANISM_STATUS:
-        buflen = scsi_emulate_mechanism_status(s, outbuf);
-        if (buflen < 0) {
-            goto illegal_request;
-        }
-        break;
-    case GET_CONFIGURATION:
-        buflen = scsi_get_configuration(s, outbuf);
-        if (buflen < 0) {
-            goto illegal_request;
-        }
-        break;
-    case GET_EVENT_STATUS_NOTIFICATION:
-        buflen = scsi_get_event_status_notification(s, r, outbuf);
-        if (buflen < 0) {
-            goto illegal_request;
-        }
-        break;
-    case READ_DISC_INFORMATION:
-        buflen = scsi_read_disc_information(s, r, outbuf);
-        if (buflen < 0) {
-            goto illegal_request;
-        }
-        break;
-    case READ_DVD_STRUCTURE:
-        buflen = scsi_read_dvd_structure(s, r, outbuf);
-        if (buflen < 0) {
-            goto illegal_request;
-        }
-        break;
-    case SERVICE_ACTION_IN_16:
-        /* Service Action In subcommands. */
-        if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) {
-            DPRINTF("SAI READ CAPACITY(16)\n");
-            memset(outbuf, 0, req->cmd.xfer);
-            bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
-            if (!nb_sectors) {
-                scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
-                return 0;
-            }
-            if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) {
-                goto illegal_request;
-            }
-            nb_sectors /= s->qdev.blocksize / 512;
-            /* Returned value is the address of the last sector.  */
-            nb_sectors--;
-            /* Remember the new size for read/write sanity checking. */
-            s->qdev.max_lba = nb_sectors;
-            outbuf[0] = (nb_sectors >> 56) & 0xff;
-            outbuf[1] = (nb_sectors >> 48) & 0xff;
-            outbuf[2] = (nb_sectors >> 40) & 0xff;
-            outbuf[3] = (nb_sectors >> 32) & 0xff;
-            outbuf[4] = (nb_sectors >> 24) & 0xff;
-            outbuf[5] = (nb_sectors >> 16) & 0xff;
-            outbuf[6] = (nb_sectors >> 8) & 0xff;
-            outbuf[7] = nb_sectors & 0xff;
-            outbuf[8] = 0;
-            outbuf[9] = 0;
-            outbuf[10] = s->qdev.blocksize >> 8;
-            outbuf[11] = 0;
-            outbuf[12] = 0;
-            outbuf[13] = get_physical_block_exp(&s->qdev.conf);
-
-            /* set TPE bit if the format supports discard */
-            if (s->qdev.conf.discard_granularity) {
-                outbuf[14] = 0x80;
-            }
-
-            /* Protection, exponent and lowest lba field left blank. */
-            break;
-        }
-        DPRINTF("Unsupported Service Action In\n");
-        goto illegal_request;
-    case SYNCHRONIZE_CACHE:
-        /* The request is used as the AIO opaque value, so add a ref.  */
-        scsi_req_ref(&r->req);
-        bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
-        r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r);
-        return 0;
-    case SEEK_10:
-        DPRINTF("Seek(10) (sector %" PRId64 ")\n", r->req.cmd.lba);
-        if (r->req.cmd.lba > s->qdev.max_lba) {
-            goto illegal_lba;
-        }
-        break;
-    case MODE_SELECT:
-        DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer);
-        break;
-    case MODE_SELECT_10:
-        DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer);
-        break;
-    case UNMAP:
-        DPRINTF("Unmap (len %lu)\n", (long)r->req.cmd.xfer);
-        break;
-    case WRITE_SAME_10:
-    case WRITE_SAME_16:
-        nb_sectors = scsi_data_cdb_length(r->req.cmd.buf);
-        if (bdrv_is_read_only(s->qdev.conf.bs)) {
-            scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
-            return 0;
-        }
-        if (!check_lba_range(s, r->req.cmd.lba, nb_sectors)) {
-            goto illegal_lba;
-        }
-
-        /*
-         * We only support WRITE SAME with the unmap bit set for now.
-         */
-        if (!(req->cmd.buf[1] & 0x8)) {
-            goto illegal_request;
-        }
-
-        /* The request is used as the AIO opaque value, so add a ref.  */
-        scsi_req_ref(&r->req);
-        r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs,
-                                        r->req.cmd.lba * (s->qdev.blocksize / 512),
-                                        nb_sectors * (s->qdev.blocksize / 512),
-                                        scsi_aio_complete, r);
-        return 0;
-    default:
-        DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]);
-        scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE));
-        return 0;
-    }
-    assert(!r->req.aiocb);
-    r->iov.iov_len = MIN(r->buflen, req->cmd.xfer);
-    if (r->iov.iov_len == 0) {
-        scsi_req_complete(&r->req, GOOD);
-    }
-    if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
-        assert(r->iov.iov_len == req->cmd.xfer);
-        return -r->iov.iov_len;
-    } else {
-        return r->iov.iov_len;
-    }
-
-illegal_request:
-    if (r->req.status == -1) {
-        scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
-    }
-    return 0;
-
-illegal_lba:
-    scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
-    return 0;
-}
-
-/* Execute a scsi command.  Returns the length of the data expected by the
-   command.  This will be Positive for data transfers from the device
-   (eg. disk reads), negative for transfers to the device (eg. disk writes),
-   and zero if the command does not transfer any data.  */
-
-static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
-{
-    SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
-    uint32_t len;
-    uint8_t command;
-
-    command = buf[0];
-
-    if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
-        scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
-        return 0;
-    }
-
-    len = scsi_data_cdb_length(r->req.cmd.buf);
-    switch (command) {
-    case READ_6:
-    case READ_10:
-    case READ_12:
-    case READ_16:
-        DPRINTF("Read (sector %" PRId64 ", count %u)\n", r->req.cmd.lba, len);
-        if (r->req.cmd.buf[1] & 0xe0) {
-            goto illegal_request;
-        }
-        if (!check_lba_range(s, r->req.cmd.lba, len)) {
-            goto illegal_lba;
-        }
-        r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
-        r->sector_count = len * (s->qdev.blocksize / 512);
-        break;
-    case WRITE_6:
-    case WRITE_10:
-    case WRITE_12:
-    case WRITE_16:
-    case WRITE_VERIFY_10:
-    case WRITE_VERIFY_12:
-    case WRITE_VERIFY_16:
-        if (bdrv_is_read_only(s->qdev.conf.bs)) {
-            scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED));
-            return 0;
-        }
-        /* fallthrough */
-    case VERIFY_10:
-    case VERIFY_12:
-    case VERIFY_16:
-        DPRINTF("Write %s(sector %" PRId64 ", count %u)\n",
-                (command & 0xe) == 0xe ? "And Verify " : "",
-                r->req.cmd.lba, len);
-        if (r->req.cmd.buf[1] & 0xe0) {
-            goto illegal_request;
-        }
-        if (!check_lba_range(s, r->req.cmd.lba, len)) {
-            goto illegal_lba;
-        }
-        r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
-        r->sector_count = len * (s->qdev.blocksize / 512);
-        break;
-    default:
-        abort();
-    illegal_request:
-        scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
-        return 0;
-    illegal_lba:
-        scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE));
-        return 0;
-    }
-    if (r->sector_count == 0) {
-        scsi_req_complete(&r->req, GOOD);
-    }
-    assert(r->iov.iov_len == 0);
-    if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
-        return -r->sector_count * 512;
-    } else {
-        return r->sector_count * 512;
-    }
-}
-
-static void scsi_disk_reset(DeviceState *dev)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev);
-    uint64_t nb_sectors;
-
-    scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET));
-
-    bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
-    nb_sectors /= s->qdev.blocksize / 512;
-    if (nb_sectors) {
-        nb_sectors--;
-    }
-    s->qdev.max_lba = nb_sectors;
-}
-
-static void scsi_destroy(SCSIDevice *dev)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
-
-    scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE));
-    blockdev_mark_auto_del(s->qdev.conf.bs);
-}
-
-static void scsi_disk_resize_cb(void *opaque)
-{
-    SCSIDiskState *s = opaque;
-
-    /* SPC lists this sense code as available only for
-     * direct-access devices.
-     */
-    if (s->qdev.type == TYPE_DISK) {
-        scsi_device_report_change(&s->qdev, SENSE_CODE(CAPACITY_CHANGED));
-    }
-}
-
-static void scsi_cd_change_media_cb(void *opaque, bool load)
-{
-    SCSIDiskState *s = opaque;
-
-    /*
-     * When a CD gets changed, we have to report an ejected state and
-     * then a loaded state to guests so that they detect tray
-     * open/close and media change events.  Guests that do not use
-     * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
-     * states rely on this behavior.
-     *
-     * media_changed governs the state machine used for unit attention
-     * report.  media_event is used by GET EVENT STATUS NOTIFICATION.
-     */
-    s->media_changed = load;
-    s->tray_open = !load;
-    scsi_device_set_ua(&s->qdev, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM));
-    s->media_event = true;
-    s->eject_request = false;
-}
-
-static void scsi_cd_eject_request_cb(void *opaque, bool force)
-{
-    SCSIDiskState *s = opaque;
-
-    s->eject_request = true;
-    if (force) {
-        s->tray_locked = false;
-    }
-}
-
-static bool scsi_cd_is_tray_open(void *opaque)
-{
-    return ((SCSIDiskState *)opaque)->tray_open;
-}
-
-static bool scsi_cd_is_medium_locked(void *opaque)
-{
-    return ((SCSIDiskState *)opaque)->tray_locked;
-}
-
-static const BlockDevOps scsi_disk_removable_block_ops = {
-    .change_media_cb = scsi_cd_change_media_cb,
-    .eject_request_cb = scsi_cd_eject_request_cb,
-    .is_tray_open = scsi_cd_is_tray_open,
-    .is_medium_locked = scsi_cd_is_medium_locked,
-
-    .resize_cb = scsi_disk_resize_cb,
-};
-
-static const BlockDevOps scsi_disk_block_ops = {
-    .resize_cb = scsi_disk_resize_cb,
-};
-
-static void scsi_disk_unit_attention_reported(SCSIDevice *dev)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
-    if (s->media_changed) {
-        s->media_changed = false;
-        scsi_device_set_ua(&s->qdev, SENSE_CODE(MEDIUM_CHANGED));
-    }
-}
-
-static int scsi_initfn(SCSIDevice *dev)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
-
-    if (!s->qdev.conf.bs) {
-        error_report("drive property not set");
-        return -1;
-    }
-
-    if (!(s->features & (1 << SCSI_DISK_F_REMOVABLE)) &&
-        !bdrv_is_inserted(s->qdev.conf.bs)) {
-        error_report("Device needs media, but drive is empty");
-        return -1;
-    }
-
-    blkconf_serial(&s->qdev.conf, &s->serial);
-    if (dev->type == TYPE_DISK
-        && blkconf_geometry(&dev->conf, NULL, 65535, 255, 255) < 0) {
-        return -1;
-    }
-
-    if (s->qdev.conf.discard_granularity == -1) {
-        s->qdev.conf.discard_granularity =
-            MAX(s->qdev.conf.logical_block_size, DEFAULT_DISCARD_GRANULARITY);
-    }
-
-    if (!s->version) {
-        s->version = g_strdup(qemu_get_version());
-    }
-    if (!s->vendor) {
-        s->vendor = g_strdup("QEMU");
-    }
-
-    if (bdrv_is_sg(s->qdev.conf.bs)) {
-        error_report("unwanted /dev/sg*");
-        return -1;
-    }
-
-    if (s->features & (1 << SCSI_DISK_F_REMOVABLE)) {
-        bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_removable_block_ops, s);
-    } else {
-        bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_block_ops, s);
-    }
-    bdrv_set_buffer_alignment(s->qdev.conf.bs, s->qdev.blocksize);
-
-    bdrv_iostatus_enable(s->qdev.conf.bs);
-    add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, NULL);
-    return 0;
-}
-
-static int scsi_hd_initfn(SCSIDevice *dev)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
-    s->qdev.blocksize = s->qdev.conf.logical_block_size;
-    s->qdev.type = TYPE_DISK;
-    if (!s->product) {
-        s->product = g_strdup("QEMU HARDDISK");
-    }
-    return scsi_initfn(&s->qdev);
-}
-
-static int scsi_cd_initfn(SCSIDevice *dev)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
-    s->qdev.blocksize = 2048;
-    s->qdev.type = TYPE_ROM;
-    s->features |= 1 << SCSI_DISK_F_REMOVABLE;
-    if (!s->product) {
-        s->product = g_strdup("QEMU CD-ROM");
-    }
-    return scsi_initfn(&s->qdev);
-}
-
-static int scsi_disk_initfn(SCSIDevice *dev)
-{
-    DriveInfo *dinfo;
-
-    if (!dev->conf.bs) {
-        return scsi_initfn(dev);  /* ... and die there */
-    }
-
-    dinfo = drive_get_by_blockdev(dev->conf.bs);
-    if (dinfo->media_cd) {
-        return scsi_cd_initfn(dev);
-    } else {
-        return scsi_hd_initfn(dev);
-    }
-}
-
-static const SCSIReqOps scsi_disk_emulate_reqops = {
-    .size         = sizeof(SCSIDiskReq),
-    .free_req     = scsi_free_request,
-    .send_command = scsi_disk_emulate_command,
-    .read_data    = scsi_disk_emulate_read_data,
-    .write_data   = scsi_disk_emulate_write_data,
-    .get_buf      = scsi_get_buf,
-};
-
-static const SCSIReqOps scsi_disk_dma_reqops = {
-    .size         = sizeof(SCSIDiskReq),
-    .free_req     = scsi_free_request,
-    .send_command = scsi_disk_dma_command,
-    .read_data    = scsi_read_data,
-    .write_data   = scsi_write_data,
-    .cancel_io    = scsi_cancel_io,
-    .get_buf      = scsi_get_buf,
-    .load_request = scsi_disk_load_request,
-    .save_request = scsi_disk_save_request,
-};
-
-static const SCSIReqOps *const scsi_disk_reqops_dispatch[256] = {
-    [TEST_UNIT_READY]                 = &scsi_disk_emulate_reqops,
-    [INQUIRY]                         = &scsi_disk_emulate_reqops,
-    [MODE_SENSE]                      = &scsi_disk_emulate_reqops,
-    [MODE_SENSE_10]                   = &scsi_disk_emulate_reqops,
-    [START_STOP]                      = &scsi_disk_emulate_reqops,
-    [ALLOW_MEDIUM_REMOVAL]            = &scsi_disk_emulate_reqops,
-    [READ_CAPACITY_10]                = &scsi_disk_emulate_reqops,
-    [READ_TOC]                        = &scsi_disk_emulate_reqops,
-    [READ_DVD_STRUCTURE]              = &scsi_disk_emulate_reqops,
-    [READ_DISC_INFORMATION]           = &scsi_disk_emulate_reqops,
-    [GET_CONFIGURATION]               = &scsi_disk_emulate_reqops,
-    [GET_EVENT_STATUS_NOTIFICATION]   = &scsi_disk_emulate_reqops,
-    [MECHANISM_STATUS]                = &scsi_disk_emulate_reqops,
-    [SERVICE_ACTION_IN_16]            = &scsi_disk_emulate_reqops,
-    [REQUEST_SENSE]                   = &scsi_disk_emulate_reqops,
-    [SYNCHRONIZE_CACHE]               = &scsi_disk_emulate_reqops,
-    [SEEK_10]                         = &scsi_disk_emulate_reqops,
-    [MODE_SELECT]                     = &scsi_disk_emulate_reqops,
-    [MODE_SELECT_10]                  = &scsi_disk_emulate_reqops,
-    [UNMAP]                           = &scsi_disk_emulate_reqops,
-    [WRITE_SAME_10]                   = &scsi_disk_emulate_reqops,
-    [WRITE_SAME_16]                   = &scsi_disk_emulate_reqops,
-
-    [READ_6]                          = &scsi_disk_dma_reqops,
-    [READ_10]                         = &scsi_disk_dma_reqops,
-    [READ_12]                         = &scsi_disk_dma_reqops,
-    [READ_16]                         = &scsi_disk_dma_reqops,
-    [VERIFY_10]                       = &scsi_disk_dma_reqops,
-    [VERIFY_12]                       = &scsi_disk_dma_reqops,
-    [VERIFY_16]                       = &scsi_disk_dma_reqops,
-    [WRITE_6]                         = &scsi_disk_dma_reqops,
-    [WRITE_10]                        = &scsi_disk_dma_reqops,
-    [WRITE_12]                        = &scsi_disk_dma_reqops,
-    [WRITE_16]                        = &scsi_disk_dma_reqops,
-    [WRITE_VERIFY_10]                 = &scsi_disk_dma_reqops,
-    [WRITE_VERIFY_12]                 = &scsi_disk_dma_reqops,
-    [WRITE_VERIFY_16]                 = &scsi_disk_dma_reqops,
-};
-
-static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
-                                     uint8_t *buf, void *hba_private)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
-    SCSIRequest *req;
-    const SCSIReqOps *ops;
-    uint8_t command;
-
-    command = buf[0];
-    ops = scsi_disk_reqops_dispatch[command];
-    if (!ops) {
-        ops = &scsi_disk_emulate_reqops;
-    }
-    req = scsi_req_alloc(ops, &s->qdev, tag, lun, hba_private);
-
-#ifdef DEBUG_SCSI
-    DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]);
-    {
-        int i;
-        for (i = 1; i < req->cmd.len; i++) {
-            printf(" 0x%02x", buf[i]);
-        }
-        printf("\n");
-    }
-#endif
-
-    return req;
-}
-
-#ifdef __linux__
-static int get_device_type(SCSIDiskState *s)
-{
-    BlockDriverState *bdrv = s->qdev.conf.bs;
-    uint8_t cmd[16];
-    uint8_t buf[36];
-    uint8_t sensebuf[8];
-    sg_io_hdr_t io_header;
-    int ret;
-
-    memset(cmd, 0, sizeof(cmd));
-    memset(buf, 0, sizeof(buf));
-    cmd[0] = INQUIRY;
-    cmd[4] = sizeof(buf);
-
-    memset(&io_header, 0, sizeof(io_header));
-    io_header.interface_id = 'S';
-    io_header.dxfer_direction = SG_DXFER_FROM_DEV;
-    io_header.dxfer_len = sizeof(buf);
-    io_header.dxferp = buf;
-    io_header.cmdp = cmd;
-    io_header.cmd_len = sizeof(cmd);
-    io_header.mx_sb_len = sizeof(sensebuf);
-    io_header.sbp = sensebuf;
-    io_header.timeout = 6000; /* XXX */
-
-    ret = bdrv_ioctl(bdrv, SG_IO, &io_header);
-    if (ret < 0 || io_header.driver_status || io_header.host_status) {
-        return -1;
-    }
-    s->qdev.type = buf[0];
-    if (buf[1] & 0x80) {
-        s->features |= 1 << SCSI_DISK_F_REMOVABLE;
-    }
-    return 0;
-}
-
-static int scsi_block_initfn(SCSIDevice *dev)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
-    int sg_version;
-    int rc;
-
-    if (!s->qdev.conf.bs) {
-        error_report("scsi-block: drive property not set");
-        return -1;
-    }
-
-    /* check we are using a driver managing SG_IO (version 3 and after) */
-    if (bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 ||
-        sg_version < 30000) {
-        error_report("scsi-block: scsi generic interface too old");
-        return -1;
-    }
-
-    /* get device type from INQUIRY data */
-    rc = get_device_type(s);
-    if (rc < 0) {
-        error_report("scsi-block: INQUIRY failed");
-        return -1;
-    }
-
-    /* Make a guess for the block size, we'll fix it when the guest sends.
-     * READ CAPACITY.  If they don't, they likely would assume these sizes
-     * anyway. (TODO: check in /sys).
-     */
-    if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) {
-        s->qdev.blocksize = 2048;
-    } else {
-        s->qdev.blocksize = 512;
-    }
-    return scsi_initfn(&s->qdev);
-}
-
-static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
-                                           uint32_t lun, uint8_t *buf,
-                                           void *hba_private)
-{
-    SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
-
-    switch (buf[0]) {
-    case READ_6:
-    case READ_10:
-    case READ_12:
-    case READ_16:
-    case VERIFY_10:
-    case VERIFY_12:
-    case VERIFY_16:
-    case WRITE_6:
-    case WRITE_10:
-    case WRITE_12:
-    case WRITE_16:
-    case WRITE_VERIFY_10:
-    case WRITE_VERIFY_12:
-    case WRITE_VERIFY_16:
-        /* If we are not using O_DIRECT, we might read stale data from the
-	 * host cache if writes were made using other commands than these
-	 * ones (such as WRITE SAME or EXTENDED COPY, etc.).  So, without
-	 * O_DIRECT everything must go through SG_IO.
-         */
-        if (bdrv_get_flags(s->qdev.conf.bs) & BDRV_O_NOCACHE) {
-            break;
-        }
-
-        /* MMC writing cannot be done via pread/pwrite, because it sometimes
-         * involves writing beyond the maximum LBA or to negative LBA (lead-in).
-         * And once you do these writes, reading from the block device is
-         * unreliable, too.  It is even possible that reads deliver random data
-         * from the host page cache (this is probably a Linux bug).
-         *
-         * We might use scsi_disk_dma_reqops as long as no writing commands are
-         * seen, but performance usually isn't paramount on optical media.  So,
-         * just make scsi-block operate the same as scsi-generic for them.
-         */
-        if (s->qdev.type != TYPE_ROM) {
-            return scsi_req_alloc(&scsi_disk_dma_reqops, &s->qdev, tag, lun,
-                                  hba_private);
-        }
-    }
-
-    return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun,
-                          hba_private);
-}
-#endif
-
-#define DEFINE_SCSI_DISK_PROPERTIES()                                \
-    DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf),               \
-    DEFINE_PROP_STRING("ver", SCSIDiskState, version),               \
-    DEFINE_PROP_STRING("serial", SCSIDiskState, serial),             \
-    DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor),             \
-    DEFINE_PROP_STRING("product", SCSIDiskState, product)
-
-static Property scsi_hd_properties[] = {
-    DEFINE_SCSI_DISK_PROPERTIES(),
-    DEFINE_PROP_BIT("removable", SCSIDiskState, features,
-                    SCSI_DISK_F_REMOVABLE, false),
-    DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
-                    SCSI_DISK_F_DPOFUA, false),
-    DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0),
-    DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState, qdev.conf),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
-static const VMStateDescription vmstate_scsi_disk_state = {
-    .name = "scsi-disk",
-    .version_id = 1,
-    .minimum_version_id = 1,
-    .minimum_version_id_old = 1,
-    .fields = (VMStateField[]) {
-        VMSTATE_SCSI_DEVICE(qdev, SCSIDiskState),
-        VMSTATE_BOOL(media_changed, SCSIDiskState),
-        VMSTATE_BOOL(media_event, SCSIDiskState),
-        VMSTATE_BOOL(eject_request, SCSIDiskState),
-        VMSTATE_BOOL(tray_open, SCSIDiskState),
-        VMSTATE_BOOL(tray_locked, SCSIDiskState),
-        VMSTATE_END_OF_LIST()
-    }
-};
-
-static void scsi_hd_class_initfn(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-    SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
-
-    sc->init         = scsi_hd_initfn;
-    sc->destroy      = scsi_destroy;
-    sc->alloc_req    = scsi_new_request;
-    sc->unit_attention_reported = scsi_disk_unit_attention_reported;
-    dc->fw_name = "disk";
-    dc->desc = "virtual SCSI disk";
-    dc->reset = scsi_disk_reset;
-    dc->props = scsi_hd_properties;
-    dc->vmsd  = &vmstate_scsi_disk_state;
-}
-
-static const TypeInfo scsi_hd_info = {
-    .name          = "scsi-hd",
-    .parent        = TYPE_SCSI_DEVICE,
-    .instance_size = sizeof(SCSIDiskState),
-    .class_init    = scsi_hd_class_initfn,
-};
-
-static Property scsi_cd_properties[] = {
-    DEFINE_SCSI_DISK_PROPERTIES(),
-    DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
-static void scsi_cd_class_initfn(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-    SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
-
-    sc->init         = scsi_cd_initfn;
-    sc->destroy      = scsi_destroy;
-    sc->alloc_req    = scsi_new_request;
-    sc->unit_attention_reported = scsi_disk_unit_attention_reported;
-    dc->fw_name = "disk";
-    dc->desc = "virtual SCSI CD-ROM";
-    dc->reset = scsi_disk_reset;
-    dc->props = scsi_cd_properties;
-    dc->vmsd  = &vmstate_scsi_disk_state;
-}
-
-static const TypeInfo scsi_cd_info = {
-    .name          = "scsi-cd",
-    .parent        = TYPE_SCSI_DEVICE,
-    .instance_size = sizeof(SCSIDiskState),
-    .class_init    = scsi_cd_class_initfn,
-};
-
-#ifdef __linux__
-static Property scsi_block_properties[] = {
-    DEFINE_PROP_DRIVE("drive", SCSIDiskState, qdev.conf.bs),
-    DEFINE_PROP_INT32("bootindex", SCSIDiskState, qdev.conf.bootindex, -1),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
-static void scsi_block_class_initfn(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-    SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
-
-    sc->init         = scsi_block_initfn;
-    sc->destroy      = scsi_destroy;
-    sc->alloc_req    = scsi_block_new_request;
-    dc->fw_name = "disk";
-    dc->desc = "SCSI block device passthrough";
-    dc->reset = scsi_disk_reset;
-    dc->props = scsi_block_properties;
-    dc->vmsd  = &vmstate_scsi_disk_state;
-}
-
-static const TypeInfo scsi_block_info = {
-    .name          = "scsi-block",
-    .parent        = TYPE_SCSI_DEVICE,
-    .instance_size = sizeof(SCSIDiskState),
-    .class_init    = scsi_block_class_initfn,
-};
-#endif
-
-static Property scsi_disk_properties[] = {
-    DEFINE_SCSI_DISK_PROPERTIES(),
-    DEFINE_PROP_BIT("removable", SCSIDiskState, features,
-                    SCSI_DISK_F_REMOVABLE, false),
-    DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
-                    SCSI_DISK_F_DPOFUA, false),
-    DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
-static void scsi_disk_class_initfn(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-    SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass);
-
-    sc->init         = scsi_disk_initfn;
-    sc->destroy      = scsi_destroy;
-    sc->alloc_req    = scsi_new_request;
-    sc->unit_attention_reported = scsi_disk_unit_attention_reported;
-    dc->fw_name = "disk";
-    dc->desc = "virtual SCSI disk or CD-ROM (legacy)";
-    dc->reset = scsi_disk_reset;
-    dc->props = scsi_disk_properties;
-    dc->vmsd  = &vmstate_scsi_disk_state;
-}
-
-static const TypeInfo scsi_disk_info = {
-    .name          = "scsi-disk",
-    .parent        = TYPE_SCSI_DEVICE,
-    .instance_size = sizeof(SCSIDiskState),
-    .class_init    = scsi_disk_class_initfn,
-};
-
-static void scsi_disk_register_types(void)
-{
-    type_register_static(&scsi_hd_info);
-    type_register_static(&scsi_cd_info);
-#ifdef __linux__
-    type_register_static(&scsi_block_info);
-#endif
-    type_register_static(&scsi_disk_info);
-}
-
-type_init(scsi_disk_register_types)