root / hw / scsi-disk.c @ 4480de19
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/*
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* SCSI Device emulation
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*
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* Copyright (c) 2006 CodeSourcery.
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* Based on code by Fabrice Bellard
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*
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* Written by Paul Brook
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* Modifications:
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* 2009-Dec-12 Artyom Tarasenko : implemented stamdard inquiry for the case
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* when the allocation length of CDB is smaller
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* than 36.
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* 2009-Oct-13 Artyom Tarasenko : implemented the block descriptor in the
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* MODE SENSE response.
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*
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* This code is licensed under the LGPL.
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*
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* Note that this file only handles the SCSI architecture model and device
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* commands. Emulation of interface/link layer protocols is handled by
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* the host adapter emulator.
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*/
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//#define DEBUG_SCSI
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#ifdef DEBUG_SCSI
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#define DPRINTF(fmt, ...) \
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do { printf("scsi-disk: " fmt , ## __VA_ARGS__); } while (0) |
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#else
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#define DPRINTF(fmt, ...) do {} while(0) |
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#endif
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#define BADF(fmt, ...) \
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do { fprintf(stderr, "scsi-disk: " fmt , ## __VA_ARGS__); } while (0) |
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#include "qemu-common.h" |
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#include "qemu-error.h" |
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#include "scsi.h" |
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#include "scsi-defs.h" |
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#include "sysemu.h" |
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#include "blockdev.h" |
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#include "block_int.h" |
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#ifdef __linux
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#include <scsi/sg.h> |
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#endif
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#define SCSI_DMA_BUF_SIZE 131072 |
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#define SCSI_MAX_INQUIRY_LEN 256 |
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typedef struct SCSIDiskState SCSIDiskState; |
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typedef struct SCSIDiskReq { |
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SCSIRequest req; |
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/* Both sector and sector_count are in terms of qemu 512 byte blocks. */
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uint64_t sector; |
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uint32_t sector_count; |
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uint32_t buflen; |
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struct iovec iov;
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QEMUIOVector qiov; |
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BlockAcctCookie acct; |
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} SCSIDiskReq; |
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struct SCSIDiskState
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{ |
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SCSIDevice qdev; |
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uint32_t removable; |
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bool media_changed;
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bool media_event;
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bool eject_request;
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QEMUBH *bh; |
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char *version;
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char *serial;
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bool tray_open;
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bool tray_locked;
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}; |
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static int scsi_handle_rw_error(SCSIDiskReq *r, int error); |
77 |
|
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static void scsi_free_request(SCSIRequest *req) |
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{ |
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SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
81 |
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if (r->iov.iov_base) {
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qemu_vfree(r->iov.iov_base); |
84 |
} |
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} |
86 |
|
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/* Helper function for command completion with sense. */
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static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense) |
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{ |
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DPRINTF("Command complete tag=0x%x sense=%d/%d/%d\n",
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r->req.tag, sense.key, sense.asc, sense.ascq); |
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scsi_req_build_sense(&r->req, sense); |
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scsi_req_complete(&r->req, CHECK_CONDITION); |
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} |
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/* Cancel a pending data transfer. */
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static void scsi_cancel_io(SCSIRequest *req) |
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{ |
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SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
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DPRINTF("Cancel tag=0x%x\n", req->tag);
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if (r->req.aiocb) {
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bdrv_aio_cancel(r->req.aiocb); |
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/* This reference was left in by scsi_*_data. We take ownership of
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* it the moment scsi_req_cancel is called, independent of whether
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* bdrv_aio_cancel completes the request or not. */
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scsi_req_unref(&r->req); |
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} |
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r->req.aiocb = NULL;
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} |
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static uint32_t scsi_init_iovec(SCSIDiskReq *r)
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{ |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
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if (!r->iov.iov_base) {
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r->buflen = SCSI_DMA_BUF_SIZE; |
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r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen); |
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} |
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r->iov.iov_len = MIN(r->sector_count * 512, r->buflen);
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qemu_iovec_init_external(&r->qiov, &r->iov, 1);
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return r->qiov.size / 512; |
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} |
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|
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static void scsi_read_complete(void * opaque, int ret) |
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{ |
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SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
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int n;
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if (r->req.aiocb != NULL) { |
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r->req.aiocb = NULL;
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bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
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} |
136 |
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if (ret) {
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if (scsi_handle_rw_error(r, -ret)) {
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goto done;
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} |
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} |
142 |
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DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->qiov.size);
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n = r->qiov.size / 512;
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r->sector += n; |
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r->sector_count -= n; |
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scsi_req_data(&r->req, r->qiov.size); |
149 |
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done:
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if (!r->req.io_canceled) {
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scsi_req_unref(&r->req); |
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} |
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} |
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static void scsi_flush_complete(void * opaque, int ret) |
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{ |
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SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
160 |
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if (r->req.aiocb != NULL) { |
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r->req.aiocb = NULL;
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bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
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} |
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if (ret < 0) { |
167 |
if (scsi_handle_rw_error(r, -ret)) {
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goto done;
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} |
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} |
171 |
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scsi_req_complete(&r->req, GOOD); |
173 |
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done:
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if (!r->req.io_canceled) {
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scsi_req_unref(&r->req); |
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} |
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} |
179 |
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/* Read more data from scsi device into buffer. */
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static void scsi_read_data(SCSIRequest *req) |
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{ |
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SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
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uint32_t n; |
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if (r->sector_count == (uint32_t)-1) { |
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DPRINTF("Read buf_len=%zd\n", r->iov.iov_len);
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r->sector_count = 0;
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scsi_req_data(&r->req, r->iov.iov_len); |
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return;
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} |
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DPRINTF("Read sector_count=%d\n", r->sector_count);
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if (r->sector_count == 0) { |
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/* This also clears the sense buffer for REQUEST SENSE. */
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scsi_req_complete(&r->req, GOOD); |
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return;
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} |
199 |
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/* No data transfer may already be in progress */
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assert(r->req.aiocb == NULL);
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/* The request is used as the AIO opaque value, so add a ref. */
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scsi_req_ref(&r->req); |
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if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
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DPRINTF("Data transfer direction invalid\n");
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scsi_read_complete(r, -EINVAL); |
208 |
return;
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} |
210 |
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if (s->tray_open) {
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scsi_read_complete(r, -ENOMEDIUM); |
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return;
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} |
215 |
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n = scsi_init_iovec(r); |
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bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_READ); |
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r->req.aiocb = bdrv_aio_readv(s->qdev.conf.bs, r->sector, &r->qiov, n, |
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scsi_read_complete, r); |
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if (r->req.aiocb == NULL) { |
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scsi_read_complete(r, -EIO); |
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} |
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} |
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/*
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* scsi_handle_rw_error has two return values. 0 means that the error
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* must be ignored, 1 means that the error has been processed and the
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* caller should not do anything else for this request. Note that
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* scsi_handle_rw_error always manages its reference counts, independent
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* of the return value.
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*/
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static int scsi_handle_rw_error(SCSIDiskReq *r, int error) |
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{ |
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int is_read = (r->req.cmd.xfer == SCSI_XFER_FROM_DEV);
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
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BlockErrorAction action = bdrv_get_on_error(s->qdev.conf.bs, is_read); |
237 |
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if (action == BLOCK_ERR_IGNORE) {
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bdrv_mon_event(s->qdev.conf.bs, BDRV_ACTION_IGNORE, is_read); |
240 |
return 0; |
241 |
} |
242 |
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if ((error == ENOSPC && action == BLOCK_ERR_STOP_ENOSPC)
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|| action == BLOCK_ERR_STOP_ANY) { |
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bdrv_mon_event(s->qdev.conf.bs, BDRV_ACTION_STOP, is_read); |
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vm_stop(RUN_STATE_IO_ERROR); |
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bdrv_iostatus_set_err(s->qdev.conf.bs, error); |
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scsi_req_retry(&r->req); |
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} else {
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switch (error) {
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case ENOMEDIUM:
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scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
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break;
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case ENOMEM:
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scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE)); |
257 |
break;
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case EINVAL:
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scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
260 |
break;
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default:
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scsi_check_condition(r, SENSE_CODE(IO_ERROR)); |
263 |
break;
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} |
265 |
bdrv_mon_event(s->qdev.conf.bs, BDRV_ACTION_REPORT, is_read); |
266 |
} |
267 |
return 1; |
268 |
} |
269 |
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static void scsi_write_complete(void * opaque, int ret) |
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{ |
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SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
273 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
274 |
uint32_t n; |
275 |
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276 |
if (r->req.aiocb != NULL) { |
277 |
r->req.aiocb = NULL;
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bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
279 |
} |
280 |
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281 |
if (ret) {
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282 |
if (scsi_handle_rw_error(r, -ret)) {
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goto done;
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} |
285 |
} |
286 |
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287 |
n = r->qiov.size / 512;
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r->sector += n; |
289 |
r->sector_count -= n; |
290 |
if (r->sector_count == 0) { |
291 |
scsi_req_complete(&r->req, GOOD); |
292 |
} else {
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scsi_init_iovec(r); |
294 |
DPRINTF("Write complete tag=0x%x more=%d\n", r->req.tag, r->qiov.size);
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scsi_req_data(&r->req, r->qiov.size); |
296 |
} |
297 |
|
298 |
done:
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299 |
if (!r->req.io_canceled) {
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300 |
scsi_req_unref(&r->req); |
301 |
} |
302 |
} |
303 |
|
304 |
static void scsi_write_data(SCSIRequest *req) |
305 |
{ |
306 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
307 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
308 |
uint32_t n; |
309 |
|
310 |
/* No data transfer may already be in progress */
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311 |
assert(r->req.aiocb == NULL);
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312 |
|
313 |
/* The request is used as the AIO opaque value, so add a ref. */
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314 |
scsi_req_ref(&r->req); |
315 |
if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
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316 |
DPRINTF("Data transfer direction invalid\n");
|
317 |
scsi_write_complete(r, -EINVAL); |
318 |
return;
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319 |
} |
320 |
|
321 |
n = r->qiov.size / 512;
|
322 |
if (n) {
|
323 |
if (s->tray_open) {
|
324 |
scsi_write_complete(r, -ENOMEDIUM); |
325 |
return;
|
326 |
} |
327 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_WRITE); |
328 |
r->req.aiocb = bdrv_aio_writev(s->qdev.conf.bs, r->sector, &r->qiov, n, |
329 |
scsi_write_complete, r); |
330 |
if (r->req.aiocb == NULL) { |
331 |
scsi_write_complete(r, -ENOMEM); |
332 |
} |
333 |
} else {
|
334 |
/* Called for the first time. Ask the driver to send us more data. */
|
335 |
scsi_write_complete(r, 0);
|
336 |
} |
337 |
} |
338 |
|
339 |
/* Return a pointer to the data buffer. */
|
340 |
static uint8_t *scsi_get_buf(SCSIRequest *req)
|
341 |
{ |
342 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
343 |
|
344 |
return (uint8_t *)r->iov.iov_base;
|
345 |
} |
346 |
|
347 |
static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) |
348 |
{ |
349 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
350 |
int buflen = 0; |
351 |
|
352 |
if (req->cmd.buf[1] & 0x2) { |
353 |
/* Command support data - optional, not implemented */
|
354 |
BADF("optional INQUIRY command support request not implemented\n");
|
355 |
return -1; |
356 |
} |
357 |
|
358 |
if (req->cmd.buf[1] & 0x1) { |
359 |
/* Vital product data */
|
360 |
uint8_t page_code = req->cmd.buf[2];
|
361 |
if (req->cmd.xfer < 4) { |
362 |
BADF("Error: Inquiry (EVPD[%02X]) buffer size %zd is "
|
363 |
"less than 4\n", page_code, req->cmd.xfer);
|
364 |
return -1; |
365 |
} |
366 |
|
367 |
outbuf[buflen++] = s->qdev.type & 0x1f;
|
368 |
outbuf[buflen++] = page_code ; // this page
|
369 |
outbuf[buflen++] = 0x00;
|
370 |
|
371 |
switch (page_code) {
|
372 |
case 0x00: /* Supported page codes, mandatory */ |
373 |
{ |
374 |
int pages;
|
375 |
DPRINTF("Inquiry EVPD[Supported pages] "
|
376 |
"buffer size %zd\n", req->cmd.xfer);
|
377 |
pages = buflen++; |
378 |
outbuf[buflen++] = 0x00; // list of supported pages (this page) |
379 |
if (s->serial) {
|
380 |
outbuf[buflen++] = 0x80; // unit serial number |
381 |
} |
382 |
outbuf[buflen++] = 0x83; // device identification |
383 |
if (s->qdev.type == TYPE_DISK) {
|
384 |
outbuf[buflen++] = 0xb0; // block limits |
385 |
outbuf[buflen++] = 0xb2; // thin provisioning |
386 |
} |
387 |
outbuf[pages] = buflen - pages - 1; // number of pages |
388 |
break;
|
389 |
} |
390 |
case 0x80: /* Device serial number, optional */ |
391 |
{ |
392 |
int l;
|
393 |
|
394 |
if (!s->serial) {
|
395 |
DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
|
396 |
return -1; |
397 |
} |
398 |
|
399 |
l = strlen(s->serial); |
400 |
if (l > req->cmd.xfer) {
|
401 |
l = req->cmd.xfer; |
402 |
} |
403 |
if (l > 20) { |
404 |
l = 20;
|
405 |
} |
406 |
|
407 |
DPRINTF("Inquiry EVPD[Serial number] "
|
408 |
"buffer size %zd\n", req->cmd.xfer);
|
409 |
outbuf[buflen++] = l; |
410 |
memcpy(outbuf+buflen, s->serial, l); |
411 |
buflen += l; |
412 |
break;
|
413 |
} |
414 |
|
415 |
case 0x83: /* Device identification page, mandatory */ |
416 |
{ |
417 |
int max_len = 255 - 8; |
418 |
int id_len = strlen(bdrv_get_device_name(s->qdev.conf.bs));
|
419 |
|
420 |
if (id_len > max_len) {
|
421 |
id_len = max_len; |
422 |
} |
423 |
DPRINTF("Inquiry EVPD[Device identification] "
|
424 |
"buffer size %zd\n", req->cmd.xfer);
|
425 |
|
426 |
outbuf[buflen++] = 4 + id_len;
|
427 |
outbuf[buflen++] = 0x2; // ASCII |
428 |
outbuf[buflen++] = 0; // not officially assigned |
429 |
outbuf[buflen++] = 0; // reserved |
430 |
outbuf[buflen++] = id_len; // length of data following
|
431 |
|
432 |
memcpy(outbuf+buflen, bdrv_get_device_name(s->qdev.conf.bs), id_len); |
433 |
buflen += id_len; |
434 |
break;
|
435 |
} |
436 |
case 0xb0: /* block limits */ |
437 |
{ |
438 |
unsigned int unmap_sectors = |
439 |
s->qdev.conf.discard_granularity / s->qdev.blocksize; |
440 |
unsigned int min_io_size = |
441 |
s->qdev.conf.min_io_size / s->qdev.blocksize; |
442 |
unsigned int opt_io_size = |
443 |
s->qdev.conf.opt_io_size / s->qdev.blocksize; |
444 |
|
445 |
if (s->qdev.type == TYPE_ROM) {
|
446 |
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
|
447 |
page_code); |
448 |
return -1; |
449 |
} |
450 |
/* required VPD size with unmap support */
|
451 |
outbuf[3] = buflen = 0x3c; |
452 |
|
453 |
memset(outbuf + 4, 0, buflen - 4); |
454 |
|
455 |
/* optimal transfer length granularity */
|
456 |
outbuf[6] = (min_io_size >> 8) & 0xff; |
457 |
outbuf[7] = min_io_size & 0xff; |
458 |
|
459 |
/* optimal transfer length */
|
460 |
outbuf[12] = (opt_io_size >> 24) & 0xff; |
461 |
outbuf[13] = (opt_io_size >> 16) & 0xff; |
462 |
outbuf[14] = (opt_io_size >> 8) & 0xff; |
463 |
outbuf[15] = opt_io_size & 0xff; |
464 |
|
465 |
/* optimal unmap granularity */
|
466 |
outbuf[28] = (unmap_sectors >> 24) & 0xff; |
467 |
outbuf[29] = (unmap_sectors >> 16) & 0xff; |
468 |
outbuf[30] = (unmap_sectors >> 8) & 0xff; |
469 |
outbuf[31] = unmap_sectors & 0xff; |
470 |
break;
|
471 |
} |
472 |
case 0xb2: /* thin provisioning */ |
473 |
{ |
474 |
outbuf[3] = buflen = 8; |
475 |
outbuf[4] = 0; |
476 |
outbuf[5] = 0x40; /* write same with unmap supported */ |
477 |
outbuf[6] = 0; |
478 |
outbuf[7] = 0; |
479 |
break;
|
480 |
} |
481 |
default:
|
482 |
BADF("Error: unsupported Inquiry (EVPD[%02X]) "
|
483 |
"buffer size %zd\n", page_code, req->cmd.xfer);
|
484 |
return -1; |
485 |
} |
486 |
/* done with EVPD */
|
487 |
return buflen;
|
488 |
} |
489 |
|
490 |
/* Standard INQUIRY data */
|
491 |
if (req->cmd.buf[2] != 0) { |
492 |
BADF("Error: Inquiry (STANDARD) page or code "
|
493 |
"is non-zero [%02X]\n", req->cmd.buf[2]); |
494 |
return -1; |
495 |
} |
496 |
|
497 |
/* PAGE CODE == 0 */
|
498 |
if (req->cmd.xfer < 5) { |
499 |
BADF("Error: Inquiry (STANDARD) buffer size %zd "
|
500 |
"is less than 5\n", req->cmd.xfer);
|
501 |
return -1; |
502 |
} |
503 |
|
504 |
buflen = req->cmd.xfer; |
505 |
if (buflen > SCSI_MAX_INQUIRY_LEN) {
|
506 |
buflen = SCSI_MAX_INQUIRY_LEN; |
507 |
} |
508 |
memset(outbuf, 0, buflen);
|
509 |
|
510 |
outbuf[0] = s->qdev.type & 0x1f; |
511 |
outbuf[1] = s->removable ? 0x80 : 0; |
512 |
if (s->qdev.type == TYPE_ROM) {
|
513 |
memcpy(&outbuf[16], "QEMU CD-ROM ", 16); |
514 |
} else {
|
515 |
memcpy(&outbuf[16], "QEMU HARDDISK ", 16); |
516 |
} |
517 |
memcpy(&outbuf[8], "QEMU ", 8); |
518 |
memset(&outbuf[32], 0, 4); |
519 |
memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version))); |
520 |
/*
|
521 |
* We claim conformance to SPC-3, which is required for guests
|
522 |
* to ask for modern features like READ CAPACITY(16) or the
|
523 |
* block characteristics VPD page by default. Not all of SPC-3
|
524 |
* is actually implemented, but we're good enough.
|
525 |
*/
|
526 |
outbuf[2] = 5; |
527 |
outbuf[3] = 2; /* Format 2 */ |
528 |
|
529 |
if (buflen > 36) { |
530 |
outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */ |
531 |
} else {
|
532 |
/* If the allocation length of CDB is too small,
|
533 |
the additional length is not adjusted */
|
534 |
outbuf[4] = 36 - 5; |
535 |
} |
536 |
|
537 |
/* Sync data transfer and TCQ. */
|
538 |
outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0); |
539 |
return buflen;
|
540 |
} |
541 |
|
542 |
static inline bool media_is_dvd(SCSIDiskState *s) |
543 |
{ |
544 |
uint64_t nb_sectors; |
545 |
if (s->qdev.type != TYPE_ROM) {
|
546 |
return false; |
547 |
} |
548 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
549 |
return false; |
550 |
} |
551 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
552 |
return nb_sectors > CD_MAX_SECTORS;
|
553 |
} |
554 |
|
555 |
static inline bool media_is_cd(SCSIDiskState *s) |
556 |
{ |
557 |
uint64_t nb_sectors; |
558 |
if (s->qdev.type != TYPE_ROM) {
|
559 |
return false; |
560 |
} |
561 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
562 |
return false; |
563 |
} |
564 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
565 |
return nb_sectors <= CD_MAX_SECTORS;
|
566 |
} |
567 |
|
568 |
static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r, |
569 |
uint8_t *outbuf) |
570 |
{ |
571 |
static const int rds_caps_size[5] = { |
572 |
[0] = 2048 + 4, |
573 |
[1] = 4 + 4, |
574 |
[3] = 188 + 4, |
575 |
[4] = 2048 + 4, |
576 |
}; |
577 |
|
578 |
uint8_t media = r->req.cmd.buf[1];
|
579 |
uint8_t layer = r->req.cmd.buf[6];
|
580 |
uint8_t format = r->req.cmd.buf[7];
|
581 |
int size = -1; |
582 |
|
583 |
if (s->qdev.type != TYPE_ROM) {
|
584 |
return -1; |
585 |
} |
586 |
if (media != 0) { |
587 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
588 |
return -1; |
589 |
} |
590 |
|
591 |
if (format != 0xff) { |
592 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
593 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
594 |
return -1; |
595 |
} |
596 |
if (media_is_cd(s)) {
|
597 |
scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT)); |
598 |
return -1; |
599 |
} |
600 |
if (format >= ARRAY_SIZE(rds_caps_size)) {
|
601 |
return -1; |
602 |
} |
603 |
size = rds_caps_size[format]; |
604 |
memset(outbuf, 0, size);
|
605 |
} |
606 |
|
607 |
switch (format) {
|
608 |
case 0x00: { |
609 |
/* Physical format information */
|
610 |
uint64_t nb_sectors; |
611 |
if (layer != 0) { |
612 |
goto fail;
|
613 |
} |
614 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
615 |
|
616 |
outbuf[4] = 1; /* DVD-ROM, part version 1 */ |
617 |
outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */ |
618 |
outbuf[6] = 1; /* one layer, read-only (per MMC-2 spec) */ |
619 |
outbuf[7] = 0; /* default densities */ |
620 |
|
621 |
stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */ |
622 |
stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */ |
623 |
break;
|
624 |
} |
625 |
|
626 |
case 0x01: /* DVD copyright information, all zeros */ |
627 |
break;
|
628 |
|
629 |
case 0x03: /* BCA information - invalid field for no BCA info */ |
630 |
return -1; |
631 |
|
632 |
case 0x04: /* DVD disc manufacturing information, all zeros */ |
633 |
break;
|
634 |
|
635 |
case 0xff: { /* List capabilities */ |
636 |
int i;
|
637 |
size = 4;
|
638 |
for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) { |
639 |
if (!rds_caps_size[i]) {
|
640 |
continue;
|
641 |
} |
642 |
outbuf[size] = i; |
643 |
outbuf[size + 1] = 0x40; /* Not writable, readable */ |
644 |
stw_be_p(&outbuf[size + 2], rds_caps_size[i]);
|
645 |
size += 4;
|
646 |
} |
647 |
break;
|
648 |
} |
649 |
|
650 |
default:
|
651 |
return -1; |
652 |
} |
653 |
|
654 |
/* Size of buffer, not including 2 byte size field */
|
655 |
stw_be_p(outbuf, size - 2);
|
656 |
return size;
|
657 |
|
658 |
fail:
|
659 |
return -1; |
660 |
} |
661 |
|
662 |
static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf) |
663 |
{ |
664 |
uint8_t event_code, media_status; |
665 |
|
666 |
media_status = 0;
|
667 |
if (s->tray_open) {
|
668 |
media_status = MS_TRAY_OPEN; |
669 |
} else if (bdrv_is_inserted(s->qdev.conf.bs)) { |
670 |
media_status = MS_MEDIA_PRESENT; |
671 |
} |
672 |
|
673 |
/* Event notification descriptor */
|
674 |
event_code = MEC_NO_CHANGE; |
675 |
if (media_status != MS_TRAY_OPEN) {
|
676 |
if (s->media_event) {
|
677 |
event_code = MEC_NEW_MEDIA; |
678 |
s->media_event = false;
|
679 |
} else if (s->eject_request) { |
680 |
event_code = MEC_EJECT_REQUESTED; |
681 |
s->eject_request = false;
|
682 |
} |
683 |
} |
684 |
|
685 |
outbuf[0] = event_code;
|
686 |
outbuf[1] = media_status;
|
687 |
|
688 |
/* These fields are reserved, just clear them. */
|
689 |
outbuf[2] = 0; |
690 |
outbuf[3] = 0; |
691 |
return 4; |
692 |
} |
693 |
|
694 |
static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r, |
695 |
uint8_t *outbuf) |
696 |
{ |
697 |
int size;
|
698 |
uint8_t *buf = r->req.cmd.buf; |
699 |
uint8_t notification_class_request = buf[4];
|
700 |
if (s->qdev.type != TYPE_ROM) {
|
701 |
return -1; |
702 |
} |
703 |
if ((buf[1] & 1) == 0) { |
704 |
/* asynchronous */
|
705 |
return -1; |
706 |
} |
707 |
|
708 |
size = 4;
|
709 |
outbuf[0] = outbuf[1] = 0; |
710 |
outbuf[3] = 1 << GESN_MEDIA; /* supported events */ |
711 |
if (notification_class_request & (1 << GESN_MEDIA)) { |
712 |
outbuf[2] = GESN_MEDIA;
|
713 |
size += scsi_event_status_media(s, &outbuf[size]); |
714 |
} else {
|
715 |
outbuf[2] = 0x80; |
716 |
} |
717 |
stw_be_p(outbuf, size - 4);
|
718 |
return size;
|
719 |
} |
720 |
|
721 |
static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf) |
722 |
{ |
723 |
int current;
|
724 |
|
725 |
if (s->qdev.type != TYPE_ROM) {
|
726 |
return -1; |
727 |
} |
728 |
current = media_is_dvd(s) ? MMC_PROFILE_DVD_ROM : MMC_PROFILE_CD_ROM; |
729 |
memset(outbuf, 0, 40); |
730 |
stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */ |
731 |
stw_be_p(&outbuf[6], current);
|
732 |
/* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
|
733 |
outbuf[10] = 0x03; /* persistent, current */ |
734 |
outbuf[11] = 8; /* two profiles */ |
735 |
stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM);
|
736 |
outbuf[14] = (current == MMC_PROFILE_DVD_ROM);
|
737 |
stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM);
|
738 |
outbuf[18] = (current == MMC_PROFILE_CD_ROM);
|
739 |
/* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
|
740 |
stw_be_p(&outbuf[20], 1); |
741 |
outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */ |
742 |
outbuf[23] = 8; |
743 |
stl_be_p(&outbuf[24], 1); /* SCSI */ |
744 |
outbuf[28] = 1; /* DBE = 1, mandatory */ |
745 |
/* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
|
746 |
stw_be_p(&outbuf[32], 3); |
747 |
outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */ |
748 |
outbuf[35] = 4; |
749 |
outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */ |
750 |
/* TODO: Random readable, CD read, DVD read, drive serial number,
|
751 |
power management */
|
752 |
return 40; |
753 |
} |
754 |
|
755 |
static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf) |
756 |
{ |
757 |
if (s->qdev.type != TYPE_ROM) {
|
758 |
return -1; |
759 |
} |
760 |
memset(outbuf, 0, 8); |
761 |
outbuf[5] = 1; /* CD-ROM */ |
762 |
return 8; |
763 |
} |
764 |
|
765 |
static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf, |
766 |
int page_control)
|
767 |
{ |
768 |
static const int mode_sense_valid[0x3f] = { |
769 |
[MODE_PAGE_HD_GEOMETRY] = (1 << TYPE_DISK),
|
770 |
[MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
|
771 |
[MODE_PAGE_CACHING] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
772 |
[MODE_PAGE_R_W_ERROR] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
773 |
[MODE_PAGE_AUDIO_CTL] = (1 << TYPE_ROM),
|
774 |
[MODE_PAGE_CAPABILITIES] = (1 << TYPE_ROM),
|
775 |
}; |
776 |
|
777 |
BlockDriverState *bdrv = s->qdev.conf.bs; |
778 |
int cylinders, heads, secs;
|
779 |
uint8_t *p = *p_outbuf; |
780 |
|
781 |
if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) { |
782 |
return -1; |
783 |
} |
784 |
|
785 |
p[0] = page;
|
786 |
|
787 |
/*
|
788 |
* If Changeable Values are requested, a mask denoting those mode parameters
|
789 |
* that are changeable shall be returned. As we currently don't support
|
790 |
* parameter changes via MODE_SELECT all bits are returned set to zero.
|
791 |
* The buffer was already menset to zero by the caller of this function.
|
792 |
*/
|
793 |
switch (page) {
|
794 |
case MODE_PAGE_HD_GEOMETRY:
|
795 |
p[1] = 0x16; |
796 |
if (page_control == 1) { /* Changeable Values */ |
797 |
break;
|
798 |
} |
799 |
/* if a geometry hint is available, use it */
|
800 |
bdrv_get_geometry_hint(bdrv, &cylinders, &heads, &secs); |
801 |
p[2] = (cylinders >> 16) & 0xff; |
802 |
p[3] = (cylinders >> 8) & 0xff; |
803 |
p[4] = cylinders & 0xff; |
804 |
p[5] = heads & 0xff; |
805 |
/* Write precomp start cylinder, disabled */
|
806 |
p[6] = (cylinders >> 16) & 0xff; |
807 |
p[7] = (cylinders >> 8) & 0xff; |
808 |
p[8] = cylinders & 0xff; |
809 |
/* Reduced current start cylinder, disabled */
|
810 |
p[9] = (cylinders >> 16) & 0xff; |
811 |
p[10] = (cylinders >> 8) & 0xff; |
812 |
p[11] = cylinders & 0xff; |
813 |
/* Device step rate [ns], 200ns */
|
814 |
p[12] = 0; |
815 |
p[13] = 200; |
816 |
/* Landing zone cylinder */
|
817 |
p[14] = 0xff; |
818 |
p[15] = 0xff; |
819 |
p[16] = 0xff; |
820 |
/* Medium rotation rate [rpm], 5400 rpm */
|
821 |
p[20] = (5400 >> 8) & 0xff; |
822 |
p[21] = 5400 & 0xff; |
823 |
break;
|
824 |
|
825 |
case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY:
|
826 |
p[1] = 0x1e; |
827 |
if (page_control == 1) { /* Changeable Values */ |
828 |
break;
|
829 |
} |
830 |
/* Transfer rate [kbit/s], 5Mbit/s */
|
831 |
p[2] = 5000 >> 8; |
832 |
p[3] = 5000 & 0xff; |
833 |
/* if a geometry hint is available, use it */
|
834 |
bdrv_get_geometry_hint(bdrv, &cylinders, &heads, &secs); |
835 |
p[4] = heads & 0xff; |
836 |
p[5] = secs & 0xff; |
837 |
p[6] = s->qdev.blocksize >> 8; |
838 |
p[8] = (cylinders >> 8) & 0xff; |
839 |
p[9] = cylinders & 0xff; |
840 |
/* Write precomp start cylinder, disabled */
|
841 |
p[10] = (cylinders >> 8) & 0xff; |
842 |
p[11] = cylinders & 0xff; |
843 |
/* Reduced current start cylinder, disabled */
|
844 |
p[12] = (cylinders >> 8) & 0xff; |
845 |
p[13] = cylinders & 0xff; |
846 |
/* Device step rate [100us], 100us */
|
847 |
p[14] = 0; |
848 |
p[15] = 1; |
849 |
/* Device step pulse width [us], 1us */
|
850 |
p[16] = 1; |
851 |
/* Device head settle delay [100us], 100us */
|
852 |
p[17] = 0; |
853 |
p[18] = 1; |
854 |
/* Motor on delay [0.1s], 0.1s */
|
855 |
p[19] = 1; |
856 |
/* Motor off delay [0.1s], 0.1s */
|
857 |
p[20] = 1; |
858 |
/* Medium rotation rate [rpm], 5400 rpm */
|
859 |
p[28] = (5400 >> 8) & 0xff; |
860 |
p[29] = 5400 & 0xff; |
861 |
break;
|
862 |
|
863 |
case MODE_PAGE_CACHING:
|
864 |
p[0] = 8; |
865 |
p[1] = 0x12; |
866 |
if (page_control == 1) { /* Changeable Values */ |
867 |
break;
|
868 |
} |
869 |
if (bdrv_enable_write_cache(s->qdev.conf.bs)) {
|
870 |
p[2] = 4; /* WCE */ |
871 |
} |
872 |
break;
|
873 |
|
874 |
case MODE_PAGE_R_W_ERROR:
|
875 |
p[1] = 10; |
876 |
p[2] = 0x80; /* Automatic Write Reallocation Enabled */ |
877 |
if (s->qdev.type == TYPE_ROM) {
|
878 |
p[3] = 0x20; /* Read Retry Count */ |
879 |
} |
880 |
break;
|
881 |
|
882 |
case MODE_PAGE_AUDIO_CTL:
|
883 |
p[1] = 14; |
884 |
break;
|
885 |
|
886 |
case MODE_PAGE_CAPABILITIES:
|
887 |
p[1] = 0x14; |
888 |
if (page_control == 1) { /* Changeable Values */ |
889 |
break;
|
890 |
} |
891 |
|
892 |
p[2] = 0x3b; /* CD-R & CD-RW read */ |
893 |
p[3] = 0; /* Writing not supported */ |
894 |
p[4] = 0x7f; /* Audio, composite, digital out, |
895 |
mode 2 form 1&2, multi session */
|
896 |
p[5] = 0xff; /* CD DA, DA accurate, RW supported, |
897 |
RW corrected, C2 errors, ISRC,
|
898 |
UPC, Bar code */
|
899 |
p[6] = 0x2d | (s->tray_locked ? 2 : 0); |
900 |
/* Locking supported, jumper present, eject, tray */
|
901 |
p[7] = 0; /* no volume & mute control, no |
902 |
changer */
|
903 |
p[8] = (50 * 176) >> 8; /* 50x read speed */ |
904 |
p[9] = (50 * 176) & 0xff; |
905 |
p[10] = 2 >> 8; /* Two volume levels */ |
906 |
p[11] = 2 & 0xff; |
907 |
p[12] = 2048 >> 8; /* 2M buffer */ |
908 |
p[13] = 2048 & 0xff; |
909 |
p[14] = (16 * 176) >> 8; /* 16x read speed current */ |
910 |
p[15] = (16 * 176) & 0xff; |
911 |
p[18] = (16 * 176) >> 8; /* 16x write speed */ |
912 |
p[19] = (16 * 176) & 0xff; |
913 |
p[20] = (16 * 176) >> 8; /* 16x write speed current */ |
914 |
p[21] = (16 * 176) & 0xff; |
915 |
break;
|
916 |
|
917 |
default:
|
918 |
return -1; |
919 |
} |
920 |
|
921 |
*p_outbuf += p[1] + 2; |
922 |
return p[1] + 2; |
923 |
} |
924 |
|
925 |
static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf) |
926 |
{ |
927 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
928 |
uint64_t nb_sectors; |
929 |
int page, dbd, buflen, ret, page_control;
|
930 |
uint8_t *p; |
931 |
uint8_t dev_specific_param; |
932 |
|
933 |
dbd = r->req.cmd.buf[1] & 0x8; |
934 |
page = r->req.cmd.buf[2] & 0x3f; |
935 |
page_control = (r->req.cmd.buf[2] & 0xc0) >> 6; |
936 |
DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
|
937 |
(r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 10, page, r->req.cmd.xfer, page_control); |
938 |
memset(outbuf, 0, r->req.cmd.xfer);
|
939 |
p = outbuf; |
940 |
|
941 |
if (bdrv_is_read_only(s->qdev.conf.bs)) {
|
942 |
dev_specific_param = 0x80; /* Readonly. */ |
943 |
} else {
|
944 |
dev_specific_param = 0x00;
|
945 |
} |
946 |
|
947 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
948 |
p[1] = 0; /* Default media type. */ |
949 |
p[2] = dev_specific_param;
|
950 |
p[3] = 0; /* Block descriptor length. */ |
951 |
p += 4;
|
952 |
} else { /* MODE_SENSE_10 */ |
953 |
p[2] = 0; /* Default media type. */ |
954 |
p[3] = dev_specific_param;
|
955 |
p[6] = p[7] = 0; /* Block descriptor length. */ |
956 |
p += 8;
|
957 |
} |
958 |
|
959 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
960 |
if (!dbd && nb_sectors) {
|
961 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
962 |
outbuf[3] = 8; /* Block descriptor length */ |
963 |
} else { /* MODE_SENSE_10 */ |
964 |
outbuf[7] = 8; /* Block descriptor length */ |
965 |
} |
966 |
nb_sectors /= (s->qdev.blocksize / 512);
|
967 |
if (nb_sectors > 0xffffff) { |
968 |
nb_sectors = 0;
|
969 |
} |
970 |
p[0] = 0; /* media density code */ |
971 |
p[1] = (nb_sectors >> 16) & 0xff; |
972 |
p[2] = (nb_sectors >> 8) & 0xff; |
973 |
p[3] = nb_sectors & 0xff; |
974 |
p[4] = 0; /* reserved */ |
975 |
p[5] = 0; /* bytes 5-7 are the sector size in bytes */ |
976 |
p[6] = s->qdev.blocksize >> 8; |
977 |
p[7] = 0; |
978 |
p += 8;
|
979 |
} |
980 |
|
981 |
if (page_control == 3) { |
982 |
/* Saved Values */
|
983 |
scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED)); |
984 |
return -1; |
985 |
} |
986 |
|
987 |
if (page == 0x3f) { |
988 |
for (page = 0; page <= 0x3e; page++) { |
989 |
mode_sense_page(s, page, &p, page_control); |
990 |
} |
991 |
} else {
|
992 |
ret = mode_sense_page(s, page, &p, page_control); |
993 |
if (ret == -1) { |
994 |
return -1; |
995 |
} |
996 |
} |
997 |
|
998 |
buflen = p - outbuf; |
999 |
/*
|
1000 |
* The mode data length field specifies the length in bytes of the
|
1001 |
* following data that is available to be transferred. The mode data
|
1002 |
* length does not include itself.
|
1003 |
*/
|
1004 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1005 |
outbuf[0] = buflen - 1; |
1006 |
} else { /* MODE_SENSE_10 */ |
1007 |
outbuf[0] = ((buflen - 2) >> 8) & 0xff; |
1008 |
outbuf[1] = (buflen - 2) & 0xff; |
1009 |
} |
1010 |
if (buflen > r->req.cmd.xfer) {
|
1011 |
buflen = r->req.cmd.xfer; |
1012 |
} |
1013 |
return buflen;
|
1014 |
} |
1015 |
|
1016 |
static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf) |
1017 |
{ |
1018 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1019 |
int start_track, format, msf, toclen;
|
1020 |
uint64_t nb_sectors; |
1021 |
|
1022 |
msf = req->cmd.buf[1] & 2; |
1023 |
format = req->cmd.buf[2] & 0xf; |
1024 |
start_track = req->cmd.buf[6];
|
1025 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1026 |
DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1); |
1027 |
nb_sectors /= s->qdev.blocksize / 512;
|
1028 |
switch (format) {
|
1029 |
case 0: |
1030 |
toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track); |
1031 |
break;
|
1032 |
case 1: |
1033 |
/* multi session : only a single session defined */
|
1034 |
toclen = 12;
|
1035 |
memset(outbuf, 0, 12); |
1036 |
outbuf[1] = 0x0a; |
1037 |
outbuf[2] = 0x01; |
1038 |
outbuf[3] = 0x01; |
1039 |
break;
|
1040 |
case 2: |
1041 |
toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track); |
1042 |
break;
|
1043 |
default:
|
1044 |
return -1; |
1045 |
} |
1046 |
if (toclen > req->cmd.xfer) {
|
1047 |
toclen = req->cmd.xfer; |
1048 |
} |
1049 |
return toclen;
|
1050 |
} |
1051 |
|
1052 |
static int scsi_disk_emulate_start_stop(SCSIDiskReq *r) |
1053 |
{ |
1054 |
SCSIRequest *req = &r->req; |
1055 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1056 |
bool start = req->cmd.buf[4] & 1; |
1057 |
bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */ |
1058 |
|
1059 |
if (s->qdev.type == TYPE_ROM && loej) {
|
1060 |
if (!start && !s->tray_open && s->tray_locked) {
|
1061 |
scsi_check_condition(r, |
1062 |
bdrv_is_inserted(s->qdev.conf.bs) |
1063 |
? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED) |
1064 |
: SENSE_CODE(NOT_READY_REMOVAL_PREVENTED)); |
1065 |
return -1; |
1066 |
} |
1067 |
bdrv_eject(s->qdev.conf.bs, !start); |
1068 |
s->tray_open = !start; |
1069 |
} |
1070 |
return 0; |
1071 |
} |
1072 |
|
1073 |
static int scsi_disk_emulate_command(SCSIDiskReq *r) |
1074 |
{ |
1075 |
SCSIRequest *req = &r->req; |
1076 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1077 |
uint64_t nb_sectors; |
1078 |
uint8_t *outbuf; |
1079 |
int buflen = 0; |
1080 |
|
1081 |
if (!r->iov.iov_base) {
|
1082 |
/*
|
1083 |
* FIXME: we shouldn't return anything bigger than 4k, but the code
|
1084 |
* requires the buffer to be as big as req->cmd.xfer in several
|
1085 |
* places. So, do not allow CDBs with a very large ALLOCATION
|
1086 |
* LENGTH. The real fix would be to modify scsi_read_data and
|
1087 |
* dma_buf_read, so that they return data beyond the buflen
|
1088 |
* as all zeros.
|
1089 |
*/
|
1090 |
if (req->cmd.xfer > 65536) { |
1091 |
goto illegal_request;
|
1092 |
} |
1093 |
r->buflen = MAX(4096, req->cmd.xfer);
|
1094 |
r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen); |
1095 |
} |
1096 |
|
1097 |
outbuf = r->iov.iov_base; |
1098 |
switch (req->cmd.buf[0]) { |
1099 |
case TEST_UNIT_READY:
|
1100 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1101 |
goto not_ready;
|
1102 |
} |
1103 |
break;
|
1104 |
case INQUIRY:
|
1105 |
buflen = scsi_disk_emulate_inquiry(req, outbuf); |
1106 |
if (buflen < 0) { |
1107 |
goto illegal_request;
|
1108 |
} |
1109 |
break;
|
1110 |
case MODE_SENSE:
|
1111 |
case MODE_SENSE_10:
|
1112 |
buflen = scsi_disk_emulate_mode_sense(r, outbuf); |
1113 |
if (buflen < 0) { |
1114 |
goto illegal_request;
|
1115 |
} |
1116 |
break;
|
1117 |
case READ_TOC:
|
1118 |
buflen = scsi_disk_emulate_read_toc(req, outbuf); |
1119 |
if (buflen < 0) { |
1120 |
goto illegal_request;
|
1121 |
} |
1122 |
break;
|
1123 |
case RESERVE:
|
1124 |
if (req->cmd.buf[1] & 1) { |
1125 |
goto illegal_request;
|
1126 |
} |
1127 |
break;
|
1128 |
case RESERVE_10:
|
1129 |
if (req->cmd.buf[1] & 3) { |
1130 |
goto illegal_request;
|
1131 |
} |
1132 |
break;
|
1133 |
case RELEASE:
|
1134 |
if (req->cmd.buf[1] & 1) { |
1135 |
goto illegal_request;
|
1136 |
} |
1137 |
break;
|
1138 |
case RELEASE_10:
|
1139 |
if (req->cmd.buf[1] & 3) { |
1140 |
goto illegal_request;
|
1141 |
} |
1142 |
break;
|
1143 |
case START_STOP:
|
1144 |
if (scsi_disk_emulate_start_stop(r) < 0) { |
1145 |
return -1; |
1146 |
} |
1147 |
break;
|
1148 |
case ALLOW_MEDIUM_REMOVAL:
|
1149 |
s->tray_locked = req->cmd.buf[4] & 1; |
1150 |
bdrv_lock_medium(s->qdev.conf.bs, req->cmd.buf[4] & 1); |
1151 |
break;
|
1152 |
case READ_CAPACITY_10:
|
1153 |
/* The normal LEN field for this command is zero. */
|
1154 |
memset(outbuf, 0, 8); |
1155 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1156 |
if (!nb_sectors) {
|
1157 |
goto not_ready;
|
1158 |
} |
1159 |
if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) { |
1160 |
goto illegal_request;
|
1161 |
} |
1162 |
nb_sectors /= s->qdev.blocksize / 512;
|
1163 |
/* Returned value is the address of the last sector. */
|
1164 |
nb_sectors--; |
1165 |
/* Remember the new size for read/write sanity checking. */
|
1166 |
s->qdev.max_lba = nb_sectors; |
1167 |
/* Clip to 2TB, instead of returning capacity modulo 2TB. */
|
1168 |
if (nb_sectors > UINT32_MAX) {
|
1169 |
nb_sectors = UINT32_MAX; |
1170 |
} |
1171 |
outbuf[0] = (nb_sectors >> 24) & 0xff; |
1172 |
outbuf[1] = (nb_sectors >> 16) & 0xff; |
1173 |
outbuf[2] = (nb_sectors >> 8) & 0xff; |
1174 |
outbuf[3] = nb_sectors & 0xff; |
1175 |
outbuf[4] = 0; |
1176 |
outbuf[5] = 0; |
1177 |
outbuf[6] = s->qdev.blocksize >> 8; |
1178 |
outbuf[7] = 0; |
1179 |
buflen = 8;
|
1180 |
break;
|
1181 |
case MECHANISM_STATUS:
|
1182 |
buflen = scsi_emulate_mechanism_status(s, outbuf); |
1183 |
if (buflen < 0) { |
1184 |
goto illegal_request;
|
1185 |
} |
1186 |
break;
|
1187 |
case GET_CONFIGURATION:
|
1188 |
buflen = scsi_get_configuration(s, outbuf); |
1189 |
if (buflen < 0) { |
1190 |
goto illegal_request;
|
1191 |
} |
1192 |
break;
|
1193 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1194 |
buflen = scsi_get_event_status_notification(s, r, outbuf); |
1195 |
if (buflen < 0) { |
1196 |
goto illegal_request;
|
1197 |
} |
1198 |
break;
|
1199 |
case READ_DVD_STRUCTURE:
|
1200 |
buflen = scsi_read_dvd_structure(s, r, outbuf); |
1201 |
if (buflen < 0) { |
1202 |
goto illegal_request;
|
1203 |
} |
1204 |
break;
|
1205 |
case SERVICE_ACTION_IN_16:
|
1206 |
/* Service Action In subcommands. */
|
1207 |
if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) { |
1208 |
DPRINTF("SAI READ CAPACITY(16)\n");
|
1209 |
memset(outbuf, 0, req->cmd.xfer);
|
1210 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1211 |
if (!nb_sectors) {
|
1212 |
goto not_ready;
|
1213 |
} |
1214 |
if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) { |
1215 |
goto illegal_request;
|
1216 |
} |
1217 |
nb_sectors /= s->qdev.blocksize / 512;
|
1218 |
/* Returned value is the address of the last sector. */
|
1219 |
nb_sectors--; |
1220 |
/* Remember the new size for read/write sanity checking. */
|
1221 |
s->qdev.max_lba = nb_sectors; |
1222 |
outbuf[0] = (nb_sectors >> 56) & 0xff; |
1223 |
outbuf[1] = (nb_sectors >> 48) & 0xff; |
1224 |
outbuf[2] = (nb_sectors >> 40) & 0xff; |
1225 |
outbuf[3] = (nb_sectors >> 32) & 0xff; |
1226 |
outbuf[4] = (nb_sectors >> 24) & 0xff; |
1227 |
outbuf[5] = (nb_sectors >> 16) & 0xff; |
1228 |
outbuf[6] = (nb_sectors >> 8) & 0xff; |
1229 |
outbuf[7] = nb_sectors & 0xff; |
1230 |
outbuf[8] = 0; |
1231 |
outbuf[9] = 0; |
1232 |
outbuf[10] = s->qdev.blocksize >> 8; |
1233 |
outbuf[11] = 0; |
1234 |
outbuf[12] = 0; |
1235 |
outbuf[13] = get_physical_block_exp(&s->qdev.conf);
|
1236 |
|
1237 |
/* set TPE bit if the format supports discard */
|
1238 |
if (s->qdev.conf.discard_granularity) {
|
1239 |
outbuf[14] = 0x80; |
1240 |
} |
1241 |
|
1242 |
/* Protection, exponent and lowest lba field left blank. */
|
1243 |
buflen = req->cmd.xfer; |
1244 |
break;
|
1245 |
} |
1246 |
DPRINTF("Unsupported Service Action In\n");
|
1247 |
goto illegal_request;
|
1248 |
case VERIFY_10:
|
1249 |
break;
|
1250 |
default:
|
1251 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
1252 |
return -1; |
1253 |
} |
1254 |
return buflen;
|
1255 |
|
1256 |
not_ready:
|
1257 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1258 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
1259 |
} else {
|
1260 |
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); |
1261 |
} |
1262 |
return -1; |
1263 |
|
1264 |
illegal_request:
|
1265 |
if (r->req.status == -1) { |
1266 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1267 |
} |
1268 |
return -1; |
1269 |
} |
1270 |
|
1271 |
/* Execute a scsi command. Returns the length of the data expected by the
|
1272 |
command. This will be Positive for data transfers from the device
|
1273 |
(eg. disk reads), negative for transfers to the device (eg. disk writes),
|
1274 |
and zero if the command does not transfer any data. */
|
1275 |
|
1276 |
static int32_t scsi_send_command(SCSIRequest *req, uint8_t *buf)
|
1277 |
{ |
1278 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1279 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1280 |
int32_t len; |
1281 |
uint8_t command; |
1282 |
int rc;
|
1283 |
|
1284 |
command = buf[0];
|
1285 |
DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", req->lun, req->tag, buf[0]); |
1286 |
|
1287 |
#ifdef DEBUG_SCSI
|
1288 |
{ |
1289 |
int i;
|
1290 |
for (i = 1; i < r->req.cmd.len; i++) { |
1291 |
printf(" 0x%02x", buf[i]);
|
1292 |
} |
1293 |
printf("\n");
|
1294 |
} |
1295 |
#endif
|
1296 |
|
1297 |
switch (command) {
|
1298 |
case TEST_UNIT_READY:
|
1299 |
case INQUIRY:
|
1300 |
case MODE_SENSE:
|
1301 |
case MODE_SENSE_10:
|
1302 |
case RESERVE:
|
1303 |
case RESERVE_10:
|
1304 |
case RELEASE:
|
1305 |
case RELEASE_10:
|
1306 |
case START_STOP:
|
1307 |
case ALLOW_MEDIUM_REMOVAL:
|
1308 |
case READ_CAPACITY_10:
|
1309 |
case READ_TOC:
|
1310 |
case READ_DVD_STRUCTURE:
|
1311 |
case GET_CONFIGURATION:
|
1312 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1313 |
case MECHANISM_STATUS:
|
1314 |
case SERVICE_ACTION_IN_16:
|
1315 |
case VERIFY_10:
|
1316 |
rc = scsi_disk_emulate_command(r); |
1317 |
if (rc < 0) { |
1318 |
return 0; |
1319 |
} |
1320 |
|
1321 |
r->iov.iov_len = rc; |
1322 |
break;
|
1323 |
case SYNCHRONIZE_CACHE:
|
1324 |
/* The request is used as the AIO opaque value, so add a ref. */
|
1325 |
scsi_req_ref(&r->req); |
1326 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
1327 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_flush_complete, r); |
1328 |
if (r->req.aiocb == NULL) { |
1329 |
scsi_flush_complete(r, -EIO); |
1330 |
} |
1331 |
return 0; |
1332 |
case READ_6:
|
1333 |
case READ_10:
|
1334 |
case READ_12:
|
1335 |
case READ_16:
|
1336 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1337 |
DPRINTF("Read (sector %" PRId64 ", count %d)\n", r->req.cmd.lba, len); |
1338 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1339 |
goto illegal_lba;
|
1340 |
} |
1341 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1342 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1343 |
break;
|
1344 |
case WRITE_6:
|
1345 |
case WRITE_10:
|
1346 |
case WRITE_12:
|
1347 |
case WRITE_16:
|
1348 |
case WRITE_VERIFY_10:
|
1349 |
case WRITE_VERIFY_12:
|
1350 |
case WRITE_VERIFY_16:
|
1351 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1352 |
DPRINTF("Write %s(sector %" PRId64 ", count %d)\n", |
1353 |
(command & 0xe) == 0xe ? "And Verify " : "", |
1354 |
r->req.cmd.lba, len); |
1355 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1356 |
goto illegal_lba;
|
1357 |
} |
1358 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1359 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1360 |
break;
|
1361 |
case MODE_SELECT:
|
1362 |
DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer); |
1363 |
/* We don't support mode parameter changes.
|
1364 |
Allow the mode parameter header + block descriptors only. */
|
1365 |
if (r->req.cmd.xfer > 12) { |
1366 |
goto fail;
|
1367 |
} |
1368 |
break;
|
1369 |
case MODE_SELECT_10:
|
1370 |
DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer); |
1371 |
/* We don't support mode parameter changes.
|
1372 |
Allow the mode parameter header + block descriptors only. */
|
1373 |
if (r->req.cmd.xfer > 16) { |
1374 |
goto fail;
|
1375 |
} |
1376 |
break;
|
1377 |
case SEEK_6:
|
1378 |
case SEEK_10:
|
1379 |
DPRINTF("Seek(%d) (sector %" PRId64 ")\n", command == SEEK_6 ? 6 : 10, |
1380 |
r->req.cmd.lba); |
1381 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1382 |
goto illegal_lba;
|
1383 |
} |
1384 |
break;
|
1385 |
case WRITE_SAME_16:
|
1386 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1387 |
|
1388 |
DPRINTF("WRITE SAME(16) (sector %" PRId64 ", count %d)\n", |
1389 |
r->req.cmd.lba, len); |
1390 |
|
1391 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1392 |
goto illegal_lba;
|
1393 |
} |
1394 |
|
1395 |
/*
|
1396 |
* We only support WRITE SAME with the unmap bit set for now.
|
1397 |
*/
|
1398 |
if (!(buf[1] & 0x8)) { |
1399 |
goto fail;
|
1400 |
} |
1401 |
|
1402 |
rc = bdrv_discard(s->qdev.conf.bs, |
1403 |
r->req.cmd.lba * (s->qdev.blocksize / 512),
|
1404 |
len * (s->qdev.blocksize / 512));
|
1405 |
if (rc < 0) { |
1406 |
/* XXX: better error code ?*/
|
1407 |
goto fail;
|
1408 |
} |
1409 |
|
1410 |
break;
|
1411 |
case REQUEST_SENSE:
|
1412 |
abort(); |
1413 |
default:
|
1414 |
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); |
1415 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
1416 |
return 0; |
1417 |
fail:
|
1418 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1419 |
return 0; |
1420 |
illegal_lba:
|
1421 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1422 |
return 0; |
1423 |
} |
1424 |
if (r->sector_count == 0 && r->iov.iov_len == 0) { |
1425 |
scsi_req_complete(&r->req, GOOD); |
1426 |
} |
1427 |
len = r->sector_count * 512 + r->iov.iov_len;
|
1428 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
1429 |
return -len;
|
1430 |
} else {
|
1431 |
if (!r->sector_count) {
|
1432 |
r->sector_count = -1;
|
1433 |
} |
1434 |
return len;
|
1435 |
} |
1436 |
} |
1437 |
|
1438 |
static void scsi_disk_reset(DeviceState *dev) |
1439 |
{ |
1440 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev); |
1441 |
uint64_t nb_sectors; |
1442 |
|
1443 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET)); |
1444 |
|
1445 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1446 |
nb_sectors /= s->qdev.blocksize / 512;
|
1447 |
if (nb_sectors) {
|
1448 |
nb_sectors--; |
1449 |
} |
1450 |
s->qdev.max_lba = nb_sectors; |
1451 |
} |
1452 |
|
1453 |
static void scsi_destroy(SCSIDevice *dev) |
1454 |
{ |
1455 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1456 |
|
1457 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE)); |
1458 |
blockdev_mark_auto_del(s->qdev.conf.bs); |
1459 |
} |
1460 |
|
1461 |
static void scsi_cd_change_media_cb(void *opaque, bool load) |
1462 |
{ |
1463 |
SCSIDiskState *s = opaque; |
1464 |
|
1465 |
/*
|
1466 |
* When a CD gets changed, we have to report an ejected state and
|
1467 |
* then a loaded state to guests so that they detect tray
|
1468 |
* open/close and media change events. Guests that do not use
|
1469 |
* GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
|
1470 |
* states rely on this behavior.
|
1471 |
*
|
1472 |
* media_changed governs the state machine used for unit attention
|
1473 |
* report. media_event is used by GET EVENT STATUS NOTIFICATION.
|
1474 |
*/
|
1475 |
s->media_changed = load; |
1476 |
s->tray_open = !load; |
1477 |
s->qdev.unit_attention = SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM); |
1478 |
s->media_event = true;
|
1479 |
s->eject_request = false;
|
1480 |
} |
1481 |
|
1482 |
static void scsi_cd_eject_request_cb(void *opaque, bool force) |
1483 |
{ |
1484 |
SCSIDiskState *s = opaque; |
1485 |
|
1486 |
s->eject_request = true;
|
1487 |
if (force) {
|
1488 |
s->tray_locked = false;
|
1489 |
} |
1490 |
} |
1491 |
|
1492 |
static bool scsi_cd_is_tray_open(void *opaque) |
1493 |
{ |
1494 |
return ((SCSIDiskState *)opaque)->tray_open;
|
1495 |
} |
1496 |
|
1497 |
static bool scsi_cd_is_medium_locked(void *opaque) |
1498 |
{ |
1499 |
return ((SCSIDiskState *)opaque)->tray_locked;
|
1500 |
} |
1501 |
|
1502 |
static const BlockDevOps scsi_cd_block_ops = { |
1503 |
.change_media_cb = scsi_cd_change_media_cb, |
1504 |
.eject_request_cb = scsi_cd_eject_request_cb, |
1505 |
.is_tray_open = scsi_cd_is_tray_open, |
1506 |
.is_medium_locked = scsi_cd_is_medium_locked, |
1507 |
}; |
1508 |
|
1509 |
static void scsi_disk_unit_attention_reported(SCSIDevice *dev) |
1510 |
{ |
1511 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1512 |
if (s->media_changed) {
|
1513 |
s->media_changed = false;
|
1514 |
s->qdev.unit_attention = SENSE_CODE(MEDIUM_CHANGED); |
1515 |
} |
1516 |
} |
1517 |
|
1518 |
static int scsi_initfn(SCSIDevice *dev) |
1519 |
{ |
1520 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1521 |
DriveInfo *dinfo; |
1522 |
|
1523 |
if (!s->qdev.conf.bs) {
|
1524 |
error_report("scsi-disk: drive property not set");
|
1525 |
return -1; |
1526 |
} |
1527 |
|
1528 |
if (!s->removable && !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1529 |
error_report("Device needs media, but drive is empty");
|
1530 |
return -1; |
1531 |
} |
1532 |
|
1533 |
if (!s->serial) {
|
1534 |
/* try to fall back to value set with legacy -drive serial=... */
|
1535 |
dinfo = drive_get_by_blockdev(s->qdev.conf.bs); |
1536 |
if (*dinfo->serial) {
|
1537 |
s->serial = g_strdup(dinfo->serial); |
1538 |
} |
1539 |
} |
1540 |
|
1541 |
if (!s->version) {
|
1542 |
s->version = g_strdup(QEMU_VERSION); |
1543 |
} |
1544 |
|
1545 |
if (bdrv_is_sg(s->qdev.conf.bs)) {
|
1546 |
error_report("scsi-disk: unwanted /dev/sg*");
|
1547 |
return -1; |
1548 |
} |
1549 |
|
1550 |
if (s->removable) {
|
1551 |
bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_cd_block_ops, s); |
1552 |
} |
1553 |
bdrv_set_buffer_alignment(s->qdev.conf.bs, s->qdev.blocksize); |
1554 |
|
1555 |
bdrv_iostatus_enable(s->qdev.conf.bs); |
1556 |
add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, ",0");
|
1557 |
return 0; |
1558 |
} |
1559 |
|
1560 |
static int scsi_hd_initfn(SCSIDevice *dev) |
1561 |
{ |
1562 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1563 |
s->qdev.blocksize = s->qdev.conf.logical_block_size; |
1564 |
s->qdev.type = TYPE_DISK; |
1565 |
return scsi_initfn(&s->qdev);
|
1566 |
} |
1567 |
|
1568 |
static int scsi_cd_initfn(SCSIDevice *dev) |
1569 |
{ |
1570 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1571 |
s->qdev.blocksize = 2048;
|
1572 |
s->qdev.type = TYPE_ROM; |
1573 |
s->removable = true;
|
1574 |
return scsi_initfn(&s->qdev);
|
1575 |
} |
1576 |
|
1577 |
static int scsi_disk_initfn(SCSIDevice *dev) |
1578 |
{ |
1579 |
DriveInfo *dinfo; |
1580 |
|
1581 |
if (!dev->conf.bs) {
|
1582 |
return scsi_initfn(dev); /* ... and die there */ |
1583 |
} |
1584 |
|
1585 |
dinfo = drive_get_by_blockdev(dev->conf.bs); |
1586 |
if (dinfo->media_cd) {
|
1587 |
return scsi_cd_initfn(dev);
|
1588 |
} else {
|
1589 |
return scsi_hd_initfn(dev);
|
1590 |
} |
1591 |
} |
1592 |
|
1593 |
static const SCSIReqOps scsi_disk_reqops = { |
1594 |
.size = sizeof(SCSIDiskReq),
|
1595 |
.free_req = scsi_free_request, |
1596 |
.send_command = scsi_send_command, |
1597 |
.read_data = scsi_read_data, |
1598 |
.write_data = scsi_write_data, |
1599 |
.cancel_io = scsi_cancel_io, |
1600 |
.get_buf = scsi_get_buf, |
1601 |
}; |
1602 |
|
1603 |
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
|
1604 |
uint8_t *buf, void *hba_private)
|
1605 |
{ |
1606 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
1607 |
SCSIRequest *req; |
1608 |
|
1609 |
req = scsi_req_alloc(&scsi_disk_reqops, &s->qdev, tag, lun, hba_private); |
1610 |
return req;
|
1611 |
} |
1612 |
|
1613 |
#ifdef __linux__
|
1614 |
static int get_device_type(SCSIDiskState *s) |
1615 |
{ |
1616 |
BlockDriverState *bdrv = s->qdev.conf.bs; |
1617 |
uint8_t cmd[16];
|
1618 |
uint8_t buf[36];
|
1619 |
uint8_t sensebuf[8];
|
1620 |
sg_io_hdr_t io_header; |
1621 |
int ret;
|
1622 |
|
1623 |
memset(cmd, 0, sizeof(cmd)); |
1624 |
memset(buf, 0, sizeof(buf)); |
1625 |
cmd[0] = INQUIRY;
|
1626 |
cmd[4] = sizeof(buf); |
1627 |
|
1628 |
memset(&io_header, 0, sizeof(io_header)); |
1629 |
io_header.interface_id = 'S';
|
1630 |
io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
1631 |
io_header.dxfer_len = sizeof(buf);
|
1632 |
io_header.dxferp = buf; |
1633 |
io_header.cmdp = cmd; |
1634 |
io_header.cmd_len = sizeof(cmd);
|
1635 |
io_header.mx_sb_len = sizeof(sensebuf);
|
1636 |
io_header.sbp = sensebuf; |
1637 |
io_header.timeout = 6000; /* XXX */ |
1638 |
|
1639 |
ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
1640 |
if (ret < 0 || io_header.driver_status || io_header.host_status) { |
1641 |
return -1; |
1642 |
} |
1643 |
s->qdev.type = buf[0];
|
1644 |
s->removable = (buf[1] & 0x80) != 0; |
1645 |
return 0; |
1646 |
} |
1647 |
|
1648 |
static int scsi_block_initfn(SCSIDevice *dev) |
1649 |
{ |
1650 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1651 |
int sg_version;
|
1652 |
int rc;
|
1653 |
|
1654 |
if (!s->qdev.conf.bs) {
|
1655 |
error_report("scsi-block: drive property not set");
|
1656 |
return -1; |
1657 |
} |
1658 |
|
1659 |
/* check we are using a driver managing SG_IO (version 3 and after) */
|
1660 |
if (bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 || |
1661 |
sg_version < 30000) {
|
1662 |
error_report("scsi-block: scsi generic interface too old");
|
1663 |
return -1; |
1664 |
} |
1665 |
|
1666 |
/* get device type from INQUIRY data */
|
1667 |
rc = get_device_type(s); |
1668 |
if (rc < 0) { |
1669 |
error_report("scsi-block: INQUIRY failed");
|
1670 |
return -1; |
1671 |
} |
1672 |
|
1673 |
/* Make a guess for the block size, we'll fix it when the guest sends.
|
1674 |
* READ CAPACITY. If they don't, they likely would assume these sizes
|
1675 |
* anyway. (TODO: check in /sys).
|
1676 |
*/
|
1677 |
if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) {
|
1678 |
s->qdev.blocksize = 2048;
|
1679 |
} else {
|
1680 |
s->qdev.blocksize = 512;
|
1681 |
} |
1682 |
return scsi_initfn(&s->qdev);
|
1683 |
} |
1684 |
|
1685 |
static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
|
1686 |
uint32_t lun, uint8_t *buf, |
1687 |
void *hba_private)
|
1688 |
{ |
1689 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
1690 |
|
1691 |
switch (buf[0]) { |
1692 |
case READ_6:
|
1693 |
case READ_10:
|
1694 |
case READ_12:
|
1695 |
case READ_16:
|
1696 |
case WRITE_6:
|
1697 |
case WRITE_10:
|
1698 |
case WRITE_12:
|
1699 |
case WRITE_16:
|
1700 |
case WRITE_VERIFY_10:
|
1701 |
case WRITE_VERIFY_12:
|
1702 |
case WRITE_VERIFY_16:
|
1703 |
return scsi_req_alloc(&scsi_disk_reqops, &s->qdev, tag, lun,
|
1704 |
hba_private); |
1705 |
} |
1706 |
|
1707 |
return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun,
|
1708 |
hba_private); |
1709 |
} |
1710 |
#endif
|
1711 |
|
1712 |
#define DEFINE_SCSI_DISK_PROPERTIES() \
|
1713 |
DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \ |
1714 |
DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
|
1715 |
DEFINE_PROP_STRING("serial", SCSIDiskState, serial)
|
1716 |
|
1717 |
static SCSIDeviceInfo scsi_disk_info[] = {
|
1718 |
{ |
1719 |
.qdev.name = "scsi-hd",
|
1720 |
.qdev.fw_name = "disk",
|
1721 |
.qdev.desc = "virtual SCSI disk",
|
1722 |
.qdev.size = sizeof(SCSIDiskState),
|
1723 |
.qdev.reset = scsi_disk_reset, |
1724 |
.init = scsi_hd_initfn, |
1725 |
.destroy = scsi_destroy, |
1726 |
.alloc_req = scsi_new_request, |
1727 |
.unit_attention_reported = scsi_disk_unit_attention_reported, |
1728 |
.qdev.props = (Property[]) { |
1729 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1730 |
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false), |
1731 |
DEFINE_PROP_END_OF_LIST(), |
1732 |
} |
1733 |
},{ |
1734 |
.qdev.name = "scsi-cd",
|
1735 |
.qdev.fw_name = "disk",
|
1736 |
.qdev.desc = "virtual SCSI CD-ROM",
|
1737 |
.qdev.size = sizeof(SCSIDiskState),
|
1738 |
.qdev.reset = scsi_disk_reset, |
1739 |
.init = scsi_cd_initfn, |
1740 |
.destroy = scsi_destroy, |
1741 |
.alloc_req = scsi_new_request, |
1742 |
.unit_attention_reported = scsi_disk_unit_attention_reported, |
1743 |
.qdev.props = (Property[]) { |
1744 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1745 |
DEFINE_PROP_END_OF_LIST(), |
1746 |
}, |
1747 |
#ifdef __linux__
|
1748 |
},{ |
1749 |
.qdev.name = "scsi-block",
|
1750 |
.qdev.fw_name = "disk",
|
1751 |
.qdev.desc = "SCSI block device passthrough",
|
1752 |
.qdev.size = sizeof(SCSIDiskState),
|
1753 |
.qdev.reset = scsi_disk_reset, |
1754 |
.init = scsi_block_initfn, |
1755 |
.destroy = scsi_destroy, |
1756 |
.alloc_req = scsi_block_new_request, |
1757 |
.qdev.props = (Property[]) { |
1758 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1759 |
DEFINE_PROP_END_OF_LIST(), |
1760 |
}, |
1761 |
#endif
|
1762 |
},{ |
1763 |
.qdev.name = "scsi-disk", /* legacy -device scsi-disk */ |
1764 |
.qdev.fw_name = "disk",
|
1765 |
.qdev.desc = "virtual SCSI disk or CD-ROM (legacy)",
|
1766 |
.qdev.size = sizeof(SCSIDiskState),
|
1767 |
.qdev.reset = scsi_disk_reset, |
1768 |
.init = scsi_disk_initfn, |
1769 |
.destroy = scsi_destroy, |
1770 |
.alloc_req = scsi_new_request, |
1771 |
.unit_attention_reported = scsi_disk_unit_attention_reported, |
1772 |
.qdev.props = (Property[]) { |
1773 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1774 |
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false), |
1775 |
DEFINE_PROP_END_OF_LIST(), |
1776 |
} |
1777 |
} |
1778 |
}; |
1779 |
|
1780 |
static void scsi_disk_register_devices(void) |
1781 |
{ |
1782 |
int i;
|
1783 |
|
1784 |
for (i = 0; i < ARRAY_SIZE(scsi_disk_info); i++) { |
1785 |
scsi_qdev_register(&scsi_disk_info[i]); |
1786 |
} |
1787 |
} |
1788 |
device_init(scsi_disk_register_devices) |