root / hw / scsi-disk.c @ 329c0a48
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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); |
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} |
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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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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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} |
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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); |
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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) { |
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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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} |
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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} |
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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); |
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return;
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} |
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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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} |
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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); |
234 |
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if (action == BLOCK_ERR_IGNORE) {
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bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_IGNORE, is_read); |
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return 0; |
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} |
239 |
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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_emit_qmp_error_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)); |
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break;
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case EINVAL:
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scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
257 |
break;
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default:
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scsi_check_condition(r, SENSE_CODE(IO_ERROR)); |
260 |
break;
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} |
262 |
bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_REPORT, is_read); |
263 |
} |
264 |
return 1; |
265 |
} |
266 |
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static void scsi_write_complete(void * opaque, int ret) |
268 |
{ |
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SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
271 |
uint32_t n; |
272 |
|
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if (r->req.aiocb != NULL) { |
274 |
r->req.aiocb = NULL;
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bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
276 |
} |
277 |
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278 |
if (ret) {
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if (scsi_handle_rw_error(r, -ret)) {
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goto done;
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} |
282 |
} |
283 |
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n = r->qiov.size / 512;
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r->sector += n; |
286 |
r->sector_count -= n; |
287 |
if (r->sector_count == 0) { |
288 |
scsi_req_complete(&r->req, GOOD); |
289 |
} else {
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290 |
scsi_init_iovec(r); |
291 |
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); |
293 |
} |
294 |
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done:
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296 |
if (!r->req.io_canceled) {
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scsi_req_unref(&r->req); |
298 |
} |
299 |
} |
300 |
|
301 |
static void scsi_write_data(SCSIRequest *req) |
302 |
{ |
303 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
304 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
305 |
uint32_t n; |
306 |
|
307 |
/* No data transfer may already be in progress */
|
308 |
assert(r->req.aiocb == NULL);
|
309 |
|
310 |
/* The request is used as the AIO opaque value, so add a ref. */
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311 |
scsi_req_ref(&r->req); |
312 |
if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
|
313 |
DPRINTF("Data transfer direction invalid\n");
|
314 |
scsi_write_complete(r, -EINVAL); |
315 |
return;
|
316 |
} |
317 |
|
318 |
n = r->qiov.size / 512;
|
319 |
if (n) {
|
320 |
if (s->tray_open) {
|
321 |
scsi_write_complete(r, -ENOMEDIUM); |
322 |
return;
|
323 |
} |
324 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_WRITE); |
325 |
r->req.aiocb = bdrv_aio_writev(s->qdev.conf.bs, r->sector, &r->qiov, n, |
326 |
scsi_write_complete, r); |
327 |
} else {
|
328 |
/* Called for the first time. Ask the driver to send us more data. */
|
329 |
scsi_write_complete(r, 0);
|
330 |
} |
331 |
} |
332 |
|
333 |
/* Return a pointer to the data buffer. */
|
334 |
static uint8_t *scsi_get_buf(SCSIRequest *req)
|
335 |
{ |
336 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
337 |
|
338 |
return (uint8_t *)r->iov.iov_base;
|
339 |
} |
340 |
|
341 |
static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) |
342 |
{ |
343 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
344 |
int buflen = 0; |
345 |
|
346 |
if (req->cmd.buf[1] & 0x2) { |
347 |
/* Command support data - optional, not implemented */
|
348 |
BADF("optional INQUIRY command support request not implemented\n");
|
349 |
return -1; |
350 |
} |
351 |
|
352 |
if (req->cmd.buf[1] & 0x1) { |
353 |
/* Vital product data */
|
354 |
uint8_t page_code = req->cmd.buf[2];
|
355 |
if (req->cmd.xfer < 4) { |
356 |
BADF("Error: Inquiry (EVPD[%02X]) buffer size %zd is "
|
357 |
"less than 4\n", page_code, req->cmd.xfer);
|
358 |
return -1; |
359 |
} |
360 |
|
361 |
outbuf[buflen++] = s->qdev.type & 0x1f;
|
362 |
outbuf[buflen++] = page_code ; // this page
|
363 |
outbuf[buflen++] = 0x00;
|
364 |
|
365 |
switch (page_code) {
|
366 |
case 0x00: /* Supported page codes, mandatory */ |
367 |
{ |
368 |
int pages;
|
369 |
DPRINTF("Inquiry EVPD[Supported pages] "
|
370 |
"buffer size %zd\n", req->cmd.xfer);
|
371 |
pages = buflen++; |
372 |
outbuf[buflen++] = 0x00; // list of supported pages (this page) |
373 |
if (s->serial) {
|
374 |
outbuf[buflen++] = 0x80; // unit serial number |
375 |
} |
376 |
outbuf[buflen++] = 0x83; // device identification |
377 |
if (s->qdev.type == TYPE_DISK) {
|
378 |
outbuf[buflen++] = 0xb0; // block limits |
379 |
outbuf[buflen++] = 0xb2; // thin provisioning |
380 |
} |
381 |
outbuf[pages] = buflen - pages - 1; // number of pages |
382 |
break;
|
383 |
} |
384 |
case 0x80: /* Device serial number, optional */ |
385 |
{ |
386 |
int l;
|
387 |
|
388 |
if (!s->serial) {
|
389 |
DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
|
390 |
return -1; |
391 |
} |
392 |
|
393 |
l = strlen(s->serial); |
394 |
if (l > 20) { |
395 |
l = 20;
|
396 |
} |
397 |
|
398 |
DPRINTF("Inquiry EVPD[Serial number] "
|
399 |
"buffer size %zd\n", req->cmd.xfer);
|
400 |
outbuf[buflen++] = l; |
401 |
memcpy(outbuf+buflen, s->serial, l); |
402 |
buflen += l; |
403 |
break;
|
404 |
} |
405 |
|
406 |
case 0x83: /* Device identification page, mandatory */ |
407 |
{ |
408 |
int max_len = 255 - 8; |
409 |
int id_len = strlen(bdrv_get_device_name(s->qdev.conf.bs));
|
410 |
|
411 |
if (id_len > max_len) {
|
412 |
id_len = max_len; |
413 |
} |
414 |
DPRINTF("Inquiry EVPD[Device identification] "
|
415 |
"buffer size %zd\n", req->cmd.xfer);
|
416 |
|
417 |
outbuf[buflen++] = 4 + id_len;
|
418 |
outbuf[buflen++] = 0x2; // ASCII |
419 |
outbuf[buflen++] = 0; // not officially assigned |
420 |
outbuf[buflen++] = 0; // reserved |
421 |
outbuf[buflen++] = id_len; // length of data following
|
422 |
|
423 |
memcpy(outbuf+buflen, bdrv_get_device_name(s->qdev.conf.bs), id_len); |
424 |
buflen += id_len; |
425 |
break;
|
426 |
} |
427 |
case 0xb0: /* block limits */ |
428 |
{ |
429 |
unsigned int unmap_sectors = |
430 |
s->qdev.conf.discard_granularity / s->qdev.blocksize; |
431 |
unsigned int min_io_size = |
432 |
s->qdev.conf.min_io_size / s->qdev.blocksize; |
433 |
unsigned int opt_io_size = |
434 |
s->qdev.conf.opt_io_size / s->qdev.blocksize; |
435 |
|
436 |
if (s->qdev.type == TYPE_ROM) {
|
437 |
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
|
438 |
page_code); |
439 |
return -1; |
440 |
} |
441 |
/* required VPD size with unmap support */
|
442 |
outbuf[3] = buflen = 0x3c; |
443 |
|
444 |
memset(outbuf + 4, 0, buflen - 4); |
445 |
|
446 |
/* optimal transfer length granularity */
|
447 |
outbuf[6] = (min_io_size >> 8) & 0xff; |
448 |
outbuf[7] = min_io_size & 0xff; |
449 |
|
450 |
/* optimal transfer length */
|
451 |
outbuf[12] = (opt_io_size >> 24) & 0xff; |
452 |
outbuf[13] = (opt_io_size >> 16) & 0xff; |
453 |
outbuf[14] = (opt_io_size >> 8) & 0xff; |
454 |
outbuf[15] = opt_io_size & 0xff; |
455 |
|
456 |
/* optimal unmap granularity */
|
457 |
outbuf[28] = (unmap_sectors >> 24) & 0xff; |
458 |
outbuf[29] = (unmap_sectors >> 16) & 0xff; |
459 |
outbuf[30] = (unmap_sectors >> 8) & 0xff; |
460 |
outbuf[31] = unmap_sectors & 0xff; |
461 |
break;
|
462 |
} |
463 |
case 0xb2: /* thin provisioning */ |
464 |
{ |
465 |
outbuf[3] = buflen = 8; |
466 |
outbuf[4] = 0; |
467 |
outbuf[5] = 0x40; /* write same with unmap supported */ |
468 |
outbuf[6] = 0; |
469 |
outbuf[7] = 0; |
470 |
break;
|
471 |
} |
472 |
default:
|
473 |
BADF("Error: unsupported Inquiry (EVPD[%02X]) "
|
474 |
"buffer size %zd\n", page_code, req->cmd.xfer);
|
475 |
return -1; |
476 |
} |
477 |
/* done with EVPD */
|
478 |
return buflen;
|
479 |
} |
480 |
|
481 |
/* Standard INQUIRY data */
|
482 |
if (req->cmd.buf[2] != 0) { |
483 |
BADF("Error: Inquiry (STANDARD) page or code "
|
484 |
"is non-zero [%02X]\n", req->cmd.buf[2]); |
485 |
return -1; |
486 |
} |
487 |
|
488 |
/* PAGE CODE == 0 */
|
489 |
if (req->cmd.xfer < 5) { |
490 |
BADF("Error: Inquiry (STANDARD) buffer size %zd "
|
491 |
"is less than 5\n", req->cmd.xfer);
|
492 |
return -1; |
493 |
} |
494 |
|
495 |
buflen = req->cmd.xfer; |
496 |
if (buflen > SCSI_MAX_INQUIRY_LEN) {
|
497 |
buflen = SCSI_MAX_INQUIRY_LEN; |
498 |
} |
499 |
memset(outbuf, 0, buflen);
|
500 |
|
501 |
outbuf[0] = s->qdev.type & 0x1f; |
502 |
outbuf[1] = s->removable ? 0x80 : 0; |
503 |
if (s->qdev.type == TYPE_ROM) {
|
504 |
memcpy(&outbuf[16], "QEMU CD-ROM ", 16); |
505 |
} else {
|
506 |
memcpy(&outbuf[16], "QEMU HARDDISK ", 16); |
507 |
} |
508 |
memcpy(&outbuf[8], "QEMU ", 8); |
509 |
memset(&outbuf[32], 0, 4); |
510 |
memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version))); |
511 |
/*
|
512 |
* We claim conformance to SPC-3, which is required for guests
|
513 |
* to ask for modern features like READ CAPACITY(16) or the
|
514 |
* block characteristics VPD page by default. Not all of SPC-3
|
515 |
* is actually implemented, but we're good enough.
|
516 |
*/
|
517 |
outbuf[2] = 5; |
518 |
outbuf[3] = 2; /* Format 2 */ |
519 |
|
520 |
if (buflen > 36) { |
521 |
outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */ |
522 |
} else {
|
523 |
/* If the allocation length of CDB is too small,
|
524 |
the additional length is not adjusted */
|
525 |
outbuf[4] = 36 - 5; |
526 |
} |
527 |
|
528 |
/* Sync data transfer and TCQ. */
|
529 |
outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0); |
530 |
return buflen;
|
531 |
} |
532 |
|
533 |
static inline bool media_is_dvd(SCSIDiskState *s) |
534 |
{ |
535 |
uint64_t nb_sectors; |
536 |
if (s->qdev.type != TYPE_ROM) {
|
537 |
return false; |
538 |
} |
539 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
540 |
return false; |
541 |
} |
542 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
543 |
return nb_sectors > CD_MAX_SECTORS;
|
544 |
} |
545 |
|
546 |
static inline bool media_is_cd(SCSIDiskState *s) |
547 |
{ |
548 |
uint64_t nb_sectors; |
549 |
if (s->qdev.type != TYPE_ROM) {
|
550 |
return false; |
551 |
} |
552 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
553 |
return false; |
554 |
} |
555 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
556 |
return nb_sectors <= CD_MAX_SECTORS;
|
557 |
} |
558 |
|
559 |
static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r, |
560 |
uint8_t *outbuf) |
561 |
{ |
562 |
static const int rds_caps_size[5] = { |
563 |
[0] = 2048 + 4, |
564 |
[1] = 4 + 4, |
565 |
[3] = 188 + 4, |
566 |
[4] = 2048 + 4, |
567 |
}; |
568 |
|
569 |
uint8_t media = r->req.cmd.buf[1];
|
570 |
uint8_t layer = r->req.cmd.buf[6];
|
571 |
uint8_t format = r->req.cmd.buf[7];
|
572 |
int size = -1; |
573 |
|
574 |
if (s->qdev.type != TYPE_ROM) {
|
575 |
return -1; |
576 |
} |
577 |
if (media != 0) { |
578 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
579 |
return -1; |
580 |
} |
581 |
|
582 |
if (format != 0xff) { |
583 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
584 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
585 |
return -1; |
586 |
} |
587 |
if (media_is_cd(s)) {
|
588 |
scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT)); |
589 |
return -1; |
590 |
} |
591 |
if (format >= ARRAY_SIZE(rds_caps_size)) {
|
592 |
return -1; |
593 |
} |
594 |
size = rds_caps_size[format]; |
595 |
memset(outbuf, 0, size);
|
596 |
} |
597 |
|
598 |
switch (format) {
|
599 |
case 0x00: { |
600 |
/* Physical format information */
|
601 |
uint64_t nb_sectors; |
602 |
if (layer != 0) { |
603 |
goto fail;
|
604 |
} |
605 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
606 |
|
607 |
outbuf[4] = 1; /* DVD-ROM, part version 1 */ |
608 |
outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */ |
609 |
outbuf[6] = 1; /* one layer, read-only (per MMC-2 spec) */ |
610 |
outbuf[7] = 0; /* default densities */ |
611 |
|
612 |
stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */ |
613 |
stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */ |
614 |
break;
|
615 |
} |
616 |
|
617 |
case 0x01: /* DVD copyright information, all zeros */ |
618 |
break;
|
619 |
|
620 |
case 0x03: /* BCA information - invalid field for no BCA info */ |
621 |
return -1; |
622 |
|
623 |
case 0x04: /* DVD disc manufacturing information, all zeros */ |
624 |
break;
|
625 |
|
626 |
case 0xff: { /* List capabilities */ |
627 |
int i;
|
628 |
size = 4;
|
629 |
for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) { |
630 |
if (!rds_caps_size[i]) {
|
631 |
continue;
|
632 |
} |
633 |
outbuf[size] = i; |
634 |
outbuf[size + 1] = 0x40; /* Not writable, readable */ |
635 |
stw_be_p(&outbuf[size + 2], rds_caps_size[i]);
|
636 |
size += 4;
|
637 |
} |
638 |
break;
|
639 |
} |
640 |
|
641 |
default:
|
642 |
return -1; |
643 |
} |
644 |
|
645 |
/* Size of buffer, not including 2 byte size field */
|
646 |
stw_be_p(outbuf, size - 2);
|
647 |
return size;
|
648 |
|
649 |
fail:
|
650 |
return -1; |
651 |
} |
652 |
|
653 |
static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf) |
654 |
{ |
655 |
uint8_t event_code, media_status; |
656 |
|
657 |
media_status = 0;
|
658 |
if (s->tray_open) {
|
659 |
media_status = MS_TRAY_OPEN; |
660 |
} else if (bdrv_is_inserted(s->qdev.conf.bs)) { |
661 |
media_status = MS_MEDIA_PRESENT; |
662 |
} |
663 |
|
664 |
/* Event notification descriptor */
|
665 |
event_code = MEC_NO_CHANGE; |
666 |
if (media_status != MS_TRAY_OPEN) {
|
667 |
if (s->media_event) {
|
668 |
event_code = MEC_NEW_MEDIA; |
669 |
s->media_event = false;
|
670 |
} else if (s->eject_request) { |
671 |
event_code = MEC_EJECT_REQUESTED; |
672 |
s->eject_request = false;
|
673 |
} |
674 |
} |
675 |
|
676 |
outbuf[0] = event_code;
|
677 |
outbuf[1] = media_status;
|
678 |
|
679 |
/* These fields are reserved, just clear them. */
|
680 |
outbuf[2] = 0; |
681 |
outbuf[3] = 0; |
682 |
return 4; |
683 |
} |
684 |
|
685 |
static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r, |
686 |
uint8_t *outbuf) |
687 |
{ |
688 |
int size;
|
689 |
uint8_t *buf = r->req.cmd.buf; |
690 |
uint8_t notification_class_request = buf[4];
|
691 |
if (s->qdev.type != TYPE_ROM) {
|
692 |
return -1; |
693 |
} |
694 |
if ((buf[1] & 1) == 0) { |
695 |
/* asynchronous */
|
696 |
return -1; |
697 |
} |
698 |
|
699 |
size = 4;
|
700 |
outbuf[0] = outbuf[1] = 0; |
701 |
outbuf[3] = 1 << GESN_MEDIA; /* supported events */ |
702 |
if (notification_class_request & (1 << GESN_MEDIA)) { |
703 |
outbuf[2] = GESN_MEDIA;
|
704 |
size += scsi_event_status_media(s, &outbuf[size]); |
705 |
} else {
|
706 |
outbuf[2] = 0x80; |
707 |
} |
708 |
stw_be_p(outbuf, size - 4);
|
709 |
return size;
|
710 |
} |
711 |
|
712 |
static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf) |
713 |
{ |
714 |
int current;
|
715 |
|
716 |
if (s->qdev.type != TYPE_ROM) {
|
717 |
return -1; |
718 |
} |
719 |
current = media_is_dvd(s) ? MMC_PROFILE_DVD_ROM : MMC_PROFILE_CD_ROM; |
720 |
memset(outbuf, 0, 40); |
721 |
stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */ |
722 |
stw_be_p(&outbuf[6], current);
|
723 |
/* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
|
724 |
outbuf[10] = 0x03; /* persistent, current */ |
725 |
outbuf[11] = 8; /* two profiles */ |
726 |
stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM);
|
727 |
outbuf[14] = (current == MMC_PROFILE_DVD_ROM);
|
728 |
stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM);
|
729 |
outbuf[18] = (current == MMC_PROFILE_CD_ROM);
|
730 |
/* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
|
731 |
stw_be_p(&outbuf[20], 1); |
732 |
outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */ |
733 |
outbuf[23] = 8; |
734 |
stl_be_p(&outbuf[24], 1); /* SCSI */ |
735 |
outbuf[28] = 1; /* DBE = 1, mandatory */ |
736 |
/* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
|
737 |
stw_be_p(&outbuf[32], 3); |
738 |
outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */ |
739 |
outbuf[35] = 4; |
740 |
outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */ |
741 |
/* TODO: Random readable, CD read, DVD read, drive serial number,
|
742 |
power management */
|
743 |
return 40; |
744 |
} |
745 |
|
746 |
static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf) |
747 |
{ |
748 |
if (s->qdev.type != TYPE_ROM) {
|
749 |
return -1; |
750 |
} |
751 |
memset(outbuf, 0, 8); |
752 |
outbuf[5] = 1; /* CD-ROM */ |
753 |
return 8; |
754 |
} |
755 |
|
756 |
static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf, |
757 |
int page_control)
|
758 |
{ |
759 |
static const int mode_sense_valid[0x3f] = { |
760 |
[MODE_PAGE_HD_GEOMETRY] = (1 << TYPE_DISK),
|
761 |
[MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
|
762 |
[MODE_PAGE_CACHING] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
763 |
[MODE_PAGE_R_W_ERROR] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
764 |
[MODE_PAGE_AUDIO_CTL] = (1 << TYPE_ROM),
|
765 |
[MODE_PAGE_CAPABILITIES] = (1 << TYPE_ROM),
|
766 |
}; |
767 |
|
768 |
BlockDriverState *bdrv = s->qdev.conf.bs; |
769 |
int cylinders, heads, secs;
|
770 |
uint8_t *p = *p_outbuf; |
771 |
|
772 |
if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) { |
773 |
return -1; |
774 |
} |
775 |
|
776 |
p[0] = page;
|
777 |
|
778 |
/*
|
779 |
* If Changeable Values are requested, a mask denoting those mode parameters
|
780 |
* that are changeable shall be returned. As we currently don't support
|
781 |
* parameter changes via MODE_SELECT all bits are returned set to zero.
|
782 |
* The buffer was already menset to zero by the caller of this function.
|
783 |
*/
|
784 |
switch (page) {
|
785 |
case MODE_PAGE_HD_GEOMETRY:
|
786 |
p[1] = 0x16; |
787 |
if (page_control == 1) { /* Changeable Values */ |
788 |
break;
|
789 |
} |
790 |
/* if a geometry hint is available, use it */
|
791 |
bdrv_guess_geometry(bdrv, &cylinders, &heads, &secs); |
792 |
p[2] = (cylinders >> 16) & 0xff; |
793 |
p[3] = (cylinders >> 8) & 0xff; |
794 |
p[4] = cylinders & 0xff; |
795 |
p[5] = heads & 0xff; |
796 |
/* Write precomp start cylinder, disabled */
|
797 |
p[6] = (cylinders >> 16) & 0xff; |
798 |
p[7] = (cylinders >> 8) & 0xff; |
799 |
p[8] = cylinders & 0xff; |
800 |
/* Reduced current start cylinder, disabled */
|
801 |
p[9] = (cylinders >> 16) & 0xff; |
802 |
p[10] = (cylinders >> 8) & 0xff; |
803 |
p[11] = cylinders & 0xff; |
804 |
/* Device step rate [ns], 200ns */
|
805 |
p[12] = 0; |
806 |
p[13] = 200; |
807 |
/* Landing zone cylinder */
|
808 |
p[14] = 0xff; |
809 |
p[15] = 0xff; |
810 |
p[16] = 0xff; |
811 |
/* Medium rotation rate [rpm], 5400 rpm */
|
812 |
p[20] = (5400 >> 8) & 0xff; |
813 |
p[21] = 5400 & 0xff; |
814 |
break;
|
815 |
|
816 |
case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY:
|
817 |
p[1] = 0x1e; |
818 |
if (page_control == 1) { /* Changeable Values */ |
819 |
break;
|
820 |
} |
821 |
/* Transfer rate [kbit/s], 5Mbit/s */
|
822 |
p[2] = 5000 >> 8; |
823 |
p[3] = 5000 & 0xff; |
824 |
/* if a geometry hint is available, use it */
|
825 |
bdrv_guess_geometry(bdrv, &cylinders, &heads, &secs); |
826 |
p[4] = heads & 0xff; |
827 |
p[5] = secs & 0xff; |
828 |
p[6] = s->qdev.blocksize >> 8; |
829 |
p[8] = (cylinders >> 8) & 0xff; |
830 |
p[9] = cylinders & 0xff; |
831 |
/* Write precomp start cylinder, disabled */
|
832 |
p[10] = (cylinders >> 8) & 0xff; |
833 |
p[11] = cylinders & 0xff; |
834 |
/* Reduced current start cylinder, disabled */
|
835 |
p[12] = (cylinders >> 8) & 0xff; |
836 |
p[13] = cylinders & 0xff; |
837 |
/* Device step rate [100us], 100us */
|
838 |
p[14] = 0; |
839 |
p[15] = 1; |
840 |
/* Device step pulse width [us], 1us */
|
841 |
p[16] = 1; |
842 |
/* Device head settle delay [100us], 100us */
|
843 |
p[17] = 0; |
844 |
p[18] = 1; |
845 |
/* Motor on delay [0.1s], 0.1s */
|
846 |
p[19] = 1; |
847 |
/* Motor off delay [0.1s], 0.1s */
|
848 |
p[20] = 1; |
849 |
/* Medium rotation rate [rpm], 5400 rpm */
|
850 |
p[28] = (5400 >> 8) & 0xff; |
851 |
p[29] = 5400 & 0xff; |
852 |
break;
|
853 |
|
854 |
case MODE_PAGE_CACHING:
|
855 |
p[0] = 8; |
856 |
p[1] = 0x12; |
857 |
if (page_control == 1) { /* Changeable Values */ |
858 |
break;
|
859 |
} |
860 |
if (bdrv_enable_write_cache(s->qdev.conf.bs)) {
|
861 |
p[2] = 4; /* WCE */ |
862 |
} |
863 |
break;
|
864 |
|
865 |
case MODE_PAGE_R_W_ERROR:
|
866 |
p[1] = 10; |
867 |
p[2] = 0x80; /* Automatic Write Reallocation Enabled */ |
868 |
if (s->qdev.type == TYPE_ROM) {
|
869 |
p[3] = 0x20; /* Read Retry Count */ |
870 |
} |
871 |
break;
|
872 |
|
873 |
case MODE_PAGE_AUDIO_CTL:
|
874 |
p[1] = 14; |
875 |
break;
|
876 |
|
877 |
case MODE_PAGE_CAPABILITIES:
|
878 |
p[1] = 0x14; |
879 |
if (page_control == 1) { /* Changeable Values */ |
880 |
break;
|
881 |
} |
882 |
|
883 |
p[2] = 0x3b; /* CD-R & CD-RW read */ |
884 |
p[3] = 0; /* Writing not supported */ |
885 |
p[4] = 0x7f; /* Audio, composite, digital out, |
886 |
mode 2 form 1&2, multi session */
|
887 |
p[5] = 0xff; /* CD DA, DA accurate, RW supported, |
888 |
RW corrected, C2 errors, ISRC,
|
889 |
UPC, Bar code */
|
890 |
p[6] = 0x2d | (s->tray_locked ? 2 : 0); |
891 |
/* Locking supported, jumper present, eject, tray */
|
892 |
p[7] = 0; /* no volume & mute control, no |
893 |
changer */
|
894 |
p[8] = (50 * 176) >> 8; /* 50x read speed */ |
895 |
p[9] = (50 * 176) & 0xff; |
896 |
p[10] = 2 >> 8; /* Two volume levels */ |
897 |
p[11] = 2 & 0xff; |
898 |
p[12] = 2048 >> 8; /* 2M buffer */ |
899 |
p[13] = 2048 & 0xff; |
900 |
p[14] = (16 * 176) >> 8; /* 16x read speed current */ |
901 |
p[15] = (16 * 176) & 0xff; |
902 |
p[18] = (16 * 176) >> 8; /* 16x write speed */ |
903 |
p[19] = (16 * 176) & 0xff; |
904 |
p[20] = (16 * 176) >> 8; /* 16x write speed current */ |
905 |
p[21] = (16 * 176) & 0xff; |
906 |
break;
|
907 |
|
908 |
default:
|
909 |
return -1; |
910 |
} |
911 |
|
912 |
*p_outbuf += p[1] + 2; |
913 |
return p[1] + 2; |
914 |
} |
915 |
|
916 |
static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf) |
917 |
{ |
918 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
919 |
uint64_t nb_sectors; |
920 |
int page, dbd, buflen, ret, page_control;
|
921 |
uint8_t *p; |
922 |
uint8_t dev_specific_param; |
923 |
|
924 |
dbd = r->req.cmd.buf[1] & 0x8; |
925 |
page = r->req.cmd.buf[2] & 0x3f; |
926 |
page_control = (r->req.cmd.buf[2] & 0xc0) >> 6; |
927 |
DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
|
928 |
(r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 10, page, r->req.cmd.xfer, page_control); |
929 |
memset(outbuf, 0, r->req.cmd.xfer);
|
930 |
p = outbuf; |
931 |
|
932 |
if (bdrv_is_read_only(s->qdev.conf.bs)) {
|
933 |
dev_specific_param = 0x80; /* Readonly. */ |
934 |
} else {
|
935 |
dev_specific_param = 0x00;
|
936 |
} |
937 |
|
938 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
939 |
p[1] = 0; /* Default media type. */ |
940 |
p[2] = dev_specific_param;
|
941 |
p[3] = 0; /* Block descriptor length. */ |
942 |
p += 4;
|
943 |
} else { /* MODE_SENSE_10 */ |
944 |
p[2] = 0; /* Default media type. */ |
945 |
p[3] = dev_specific_param;
|
946 |
p[6] = p[7] = 0; /* Block descriptor length. */ |
947 |
p += 8;
|
948 |
} |
949 |
|
950 |
/* MMC prescribes that CD/DVD drives have no block descriptors. */
|
951 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
952 |
if (!dbd && s->qdev.type == TYPE_DISK && nb_sectors) {
|
953 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
954 |
outbuf[3] = 8; /* Block descriptor length */ |
955 |
} else { /* MODE_SENSE_10 */ |
956 |
outbuf[7] = 8; /* Block descriptor length */ |
957 |
} |
958 |
nb_sectors /= (s->qdev.blocksize / 512);
|
959 |
if (nb_sectors > 0xffffff) { |
960 |
nb_sectors = 0;
|
961 |
} |
962 |
p[0] = 0; /* media density code */ |
963 |
p[1] = (nb_sectors >> 16) & 0xff; |
964 |
p[2] = (nb_sectors >> 8) & 0xff; |
965 |
p[3] = nb_sectors & 0xff; |
966 |
p[4] = 0; /* reserved */ |
967 |
p[5] = 0; /* bytes 5-7 are the sector size in bytes */ |
968 |
p[6] = s->qdev.blocksize >> 8; |
969 |
p[7] = 0; |
970 |
p += 8;
|
971 |
} |
972 |
|
973 |
if (page_control == 3) { |
974 |
/* Saved Values */
|
975 |
scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED)); |
976 |
return -1; |
977 |
} |
978 |
|
979 |
if (page == 0x3f) { |
980 |
for (page = 0; page <= 0x3e; page++) { |
981 |
mode_sense_page(s, page, &p, page_control); |
982 |
} |
983 |
} else {
|
984 |
ret = mode_sense_page(s, page, &p, page_control); |
985 |
if (ret == -1) { |
986 |
return -1; |
987 |
} |
988 |
} |
989 |
|
990 |
buflen = p - outbuf; |
991 |
/*
|
992 |
* The mode data length field specifies the length in bytes of the
|
993 |
* following data that is available to be transferred. The mode data
|
994 |
* length does not include itself.
|
995 |
*/
|
996 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
997 |
outbuf[0] = buflen - 1; |
998 |
} else { /* MODE_SENSE_10 */ |
999 |
outbuf[0] = ((buflen - 2) >> 8) & 0xff; |
1000 |
outbuf[1] = (buflen - 2) & 0xff; |
1001 |
} |
1002 |
return buflen;
|
1003 |
} |
1004 |
|
1005 |
static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf) |
1006 |
{ |
1007 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1008 |
int start_track, format, msf, toclen;
|
1009 |
uint64_t nb_sectors; |
1010 |
|
1011 |
msf = req->cmd.buf[1] & 2; |
1012 |
format = req->cmd.buf[2] & 0xf; |
1013 |
start_track = req->cmd.buf[6];
|
1014 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1015 |
DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1); |
1016 |
nb_sectors /= s->qdev.blocksize / 512;
|
1017 |
switch (format) {
|
1018 |
case 0: |
1019 |
toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track); |
1020 |
break;
|
1021 |
case 1: |
1022 |
/* multi session : only a single session defined */
|
1023 |
toclen = 12;
|
1024 |
memset(outbuf, 0, 12); |
1025 |
outbuf[1] = 0x0a; |
1026 |
outbuf[2] = 0x01; |
1027 |
outbuf[3] = 0x01; |
1028 |
break;
|
1029 |
case 2: |
1030 |
toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track); |
1031 |
break;
|
1032 |
default:
|
1033 |
return -1; |
1034 |
} |
1035 |
return toclen;
|
1036 |
} |
1037 |
|
1038 |
static int scsi_disk_emulate_start_stop(SCSIDiskReq *r) |
1039 |
{ |
1040 |
SCSIRequest *req = &r->req; |
1041 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1042 |
bool start = req->cmd.buf[4] & 1; |
1043 |
bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */ |
1044 |
|
1045 |
if (s->qdev.type == TYPE_ROM && loej) {
|
1046 |
if (!start && !s->tray_open && s->tray_locked) {
|
1047 |
scsi_check_condition(r, |
1048 |
bdrv_is_inserted(s->qdev.conf.bs) |
1049 |
? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED) |
1050 |
: SENSE_CODE(NOT_READY_REMOVAL_PREVENTED)); |
1051 |
return -1; |
1052 |
} |
1053 |
bdrv_eject(s->qdev.conf.bs, !start); |
1054 |
s->tray_open = !start; |
1055 |
} |
1056 |
return 0; |
1057 |
} |
1058 |
|
1059 |
static int scsi_disk_emulate_command(SCSIDiskReq *r) |
1060 |
{ |
1061 |
SCSIRequest *req = &r->req; |
1062 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1063 |
uint64_t nb_sectors; |
1064 |
uint8_t *outbuf; |
1065 |
int buflen = 0; |
1066 |
|
1067 |
if (!r->iov.iov_base) {
|
1068 |
/*
|
1069 |
* FIXME: we shouldn't return anything bigger than 4k, but the code
|
1070 |
* requires the buffer to be as big as req->cmd.xfer in several
|
1071 |
* places. So, do not allow CDBs with a very large ALLOCATION
|
1072 |
* LENGTH. The real fix would be to modify scsi_read_data and
|
1073 |
* dma_buf_read, so that they return data beyond the buflen
|
1074 |
* as all zeros.
|
1075 |
*/
|
1076 |
if (req->cmd.xfer > 65536) { |
1077 |
goto illegal_request;
|
1078 |
} |
1079 |
r->buflen = MAX(4096, req->cmd.xfer);
|
1080 |
r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen); |
1081 |
} |
1082 |
|
1083 |
outbuf = r->iov.iov_base; |
1084 |
switch (req->cmd.buf[0]) { |
1085 |
case TEST_UNIT_READY:
|
1086 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1087 |
goto not_ready;
|
1088 |
} |
1089 |
break;
|
1090 |
case INQUIRY:
|
1091 |
buflen = scsi_disk_emulate_inquiry(req, outbuf); |
1092 |
if (buflen < 0) { |
1093 |
goto illegal_request;
|
1094 |
} |
1095 |
break;
|
1096 |
case MODE_SENSE:
|
1097 |
case MODE_SENSE_10:
|
1098 |
buflen = scsi_disk_emulate_mode_sense(r, outbuf); |
1099 |
if (buflen < 0) { |
1100 |
goto illegal_request;
|
1101 |
} |
1102 |
break;
|
1103 |
case READ_TOC:
|
1104 |
buflen = scsi_disk_emulate_read_toc(req, outbuf); |
1105 |
if (buflen < 0) { |
1106 |
goto illegal_request;
|
1107 |
} |
1108 |
break;
|
1109 |
case RESERVE:
|
1110 |
if (req->cmd.buf[1] & 1) { |
1111 |
goto illegal_request;
|
1112 |
} |
1113 |
break;
|
1114 |
case RESERVE_10:
|
1115 |
if (req->cmd.buf[1] & 3) { |
1116 |
goto illegal_request;
|
1117 |
} |
1118 |
break;
|
1119 |
case RELEASE:
|
1120 |
if (req->cmd.buf[1] & 1) { |
1121 |
goto illegal_request;
|
1122 |
} |
1123 |
break;
|
1124 |
case RELEASE_10:
|
1125 |
if (req->cmd.buf[1] & 3) { |
1126 |
goto illegal_request;
|
1127 |
} |
1128 |
break;
|
1129 |
case START_STOP:
|
1130 |
if (scsi_disk_emulate_start_stop(r) < 0) { |
1131 |
return -1; |
1132 |
} |
1133 |
break;
|
1134 |
case ALLOW_MEDIUM_REMOVAL:
|
1135 |
s->tray_locked = req->cmd.buf[4] & 1; |
1136 |
bdrv_lock_medium(s->qdev.conf.bs, req->cmd.buf[4] & 1); |
1137 |
break;
|
1138 |
case READ_CAPACITY_10:
|
1139 |
/* The normal LEN field for this command is zero. */
|
1140 |
memset(outbuf, 0, 8); |
1141 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1142 |
if (!nb_sectors) {
|
1143 |
goto not_ready;
|
1144 |
} |
1145 |
if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) { |
1146 |
goto illegal_request;
|
1147 |
} |
1148 |
nb_sectors /= s->qdev.blocksize / 512;
|
1149 |
/* Returned value is the address of the last sector. */
|
1150 |
nb_sectors--; |
1151 |
/* Remember the new size for read/write sanity checking. */
|
1152 |
s->qdev.max_lba = nb_sectors; |
1153 |
/* Clip to 2TB, instead of returning capacity modulo 2TB. */
|
1154 |
if (nb_sectors > UINT32_MAX) {
|
1155 |
nb_sectors = UINT32_MAX; |
1156 |
} |
1157 |
outbuf[0] = (nb_sectors >> 24) & 0xff; |
1158 |
outbuf[1] = (nb_sectors >> 16) & 0xff; |
1159 |
outbuf[2] = (nb_sectors >> 8) & 0xff; |
1160 |
outbuf[3] = nb_sectors & 0xff; |
1161 |
outbuf[4] = 0; |
1162 |
outbuf[5] = 0; |
1163 |
outbuf[6] = s->qdev.blocksize >> 8; |
1164 |
outbuf[7] = 0; |
1165 |
buflen = 8;
|
1166 |
break;
|
1167 |
case REQUEST_SENSE:
|
1168 |
/* Just return "NO SENSE". */
|
1169 |
buflen = scsi_build_sense(NULL, 0, outbuf, r->buflen, |
1170 |
(req->cmd.buf[1] & 1) == 0); |
1171 |
break;
|
1172 |
case MECHANISM_STATUS:
|
1173 |
buflen = scsi_emulate_mechanism_status(s, outbuf); |
1174 |
if (buflen < 0) { |
1175 |
goto illegal_request;
|
1176 |
} |
1177 |
break;
|
1178 |
case GET_CONFIGURATION:
|
1179 |
buflen = scsi_get_configuration(s, outbuf); |
1180 |
if (buflen < 0) { |
1181 |
goto illegal_request;
|
1182 |
} |
1183 |
break;
|
1184 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1185 |
buflen = scsi_get_event_status_notification(s, r, outbuf); |
1186 |
if (buflen < 0) { |
1187 |
goto illegal_request;
|
1188 |
} |
1189 |
break;
|
1190 |
case READ_DVD_STRUCTURE:
|
1191 |
buflen = scsi_read_dvd_structure(s, r, outbuf); |
1192 |
if (buflen < 0) { |
1193 |
goto illegal_request;
|
1194 |
} |
1195 |
break;
|
1196 |
case SERVICE_ACTION_IN_16:
|
1197 |
/* Service Action In subcommands. */
|
1198 |
if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) { |
1199 |
DPRINTF("SAI READ CAPACITY(16)\n");
|
1200 |
memset(outbuf, 0, req->cmd.xfer);
|
1201 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1202 |
if (!nb_sectors) {
|
1203 |
goto not_ready;
|
1204 |
} |
1205 |
if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) { |
1206 |
goto illegal_request;
|
1207 |
} |
1208 |
nb_sectors /= s->qdev.blocksize / 512;
|
1209 |
/* Returned value is the address of the last sector. */
|
1210 |
nb_sectors--; |
1211 |
/* Remember the new size for read/write sanity checking. */
|
1212 |
s->qdev.max_lba = nb_sectors; |
1213 |
outbuf[0] = (nb_sectors >> 56) & 0xff; |
1214 |
outbuf[1] = (nb_sectors >> 48) & 0xff; |
1215 |
outbuf[2] = (nb_sectors >> 40) & 0xff; |
1216 |
outbuf[3] = (nb_sectors >> 32) & 0xff; |
1217 |
outbuf[4] = (nb_sectors >> 24) & 0xff; |
1218 |
outbuf[5] = (nb_sectors >> 16) & 0xff; |
1219 |
outbuf[6] = (nb_sectors >> 8) & 0xff; |
1220 |
outbuf[7] = nb_sectors & 0xff; |
1221 |
outbuf[8] = 0; |
1222 |
outbuf[9] = 0; |
1223 |
outbuf[10] = s->qdev.blocksize >> 8; |
1224 |
outbuf[11] = 0; |
1225 |
outbuf[12] = 0; |
1226 |
outbuf[13] = get_physical_block_exp(&s->qdev.conf);
|
1227 |
|
1228 |
/* set TPE bit if the format supports discard */
|
1229 |
if (s->qdev.conf.discard_granularity) {
|
1230 |
outbuf[14] = 0x80; |
1231 |
} |
1232 |
|
1233 |
/* Protection, exponent and lowest lba field left blank. */
|
1234 |
buflen = req->cmd.xfer; |
1235 |
break;
|
1236 |
} |
1237 |
DPRINTF("Unsupported Service Action In\n");
|
1238 |
goto illegal_request;
|
1239 |
case VERIFY_10:
|
1240 |
break;
|
1241 |
default:
|
1242 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
1243 |
return -1; |
1244 |
} |
1245 |
buflen = MIN(buflen, req->cmd.xfer); |
1246 |
return buflen;
|
1247 |
|
1248 |
not_ready:
|
1249 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1250 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
1251 |
} else {
|
1252 |
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); |
1253 |
} |
1254 |
return -1; |
1255 |
|
1256 |
illegal_request:
|
1257 |
if (r->req.status == -1) { |
1258 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1259 |
} |
1260 |
return -1; |
1261 |
} |
1262 |
|
1263 |
/* Execute a scsi command. Returns the length of the data expected by the
|
1264 |
command. This will be Positive for data transfers from the device
|
1265 |
(eg. disk reads), negative for transfers to the device (eg. disk writes),
|
1266 |
and zero if the command does not transfer any data. */
|
1267 |
|
1268 |
static int32_t scsi_send_command(SCSIRequest *req, uint8_t *buf)
|
1269 |
{ |
1270 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1271 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1272 |
int32_t len; |
1273 |
uint8_t command; |
1274 |
int rc;
|
1275 |
|
1276 |
command = buf[0];
|
1277 |
DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", req->lun, req->tag, buf[0]); |
1278 |
|
1279 |
#ifdef DEBUG_SCSI
|
1280 |
{ |
1281 |
int i;
|
1282 |
for (i = 1; i < r->req.cmd.len; i++) { |
1283 |
printf(" 0x%02x", buf[i]);
|
1284 |
} |
1285 |
printf("\n");
|
1286 |
} |
1287 |
#endif
|
1288 |
|
1289 |
switch (command) {
|
1290 |
case TEST_UNIT_READY:
|
1291 |
case INQUIRY:
|
1292 |
case MODE_SENSE:
|
1293 |
case MODE_SENSE_10:
|
1294 |
case RESERVE:
|
1295 |
case RESERVE_10:
|
1296 |
case RELEASE:
|
1297 |
case RELEASE_10:
|
1298 |
case START_STOP:
|
1299 |
case ALLOW_MEDIUM_REMOVAL:
|
1300 |
case READ_CAPACITY_10:
|
1301 |
case READ_TOC:
|
1302 |
case READ_DVD_STRUCTURE:
|
1303 |
case GET_CONFIGURATION:
|
1304 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1305 |
case MECHANISM_STATUS:
|
1306 |
case SERVICE_ACTION_IN_16:
|
1307 |
case REQUEST_SENSE:
|
1308 |
case VERIFY_10:
|
1309 |
rc = scsi_disk_emulate_command(r); |
1310 |
if (rc < 0) { |
1311 |
return 0; |
1312 |
} |
1313 |
|
1314 |
r->iov.iov_len = rc; |
1315 |
break;
|
1316 |
case SYNCHRONIZE_CACHE:
|
1317 |
/* The request is used as the AIO opaque value, so add a ref. */
|
1318 |
scsi_req_ref(&r->req); |
1319 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
1320 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_flush_complete, r); |
1321 |
return 0; |
1322 |
case READ_6:
|
1323 |
case READ_10:
|
1324 |
case READ_12:
|
1325 |
case READ_16:
|
1326 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1327 |
DPRINTF("Read (sector %" PRId64 ", count %d)\n", r->req.cmd.lba, len); |
1328 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1329 |
goto illegal_lba;
|
1330 |
} |
1331 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1332 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1333 |
break;
|
1334 |
case WRITE_6:
|
1335 |
case WRITE_10:
|
1336 |
case WRITE_12:
|
1337 |
case WRITE_16:
|
1338 |
case WRITE_VERIFY_10:
|
1339 |
case WRITE_VERIFY_12:
|
1340 |
case WRITE_VERIFY_16:
|
1341 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1342 |
DPRINTF("Write %s(sector %" PRId64 ", count %d)\n", |
1343 |
(command & 0xe) == 0xe ? "And Verify " : "", |
1344 |
r->req.cmd.lba, len); |
1345 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1346 |
goto illegal_lba;
|
1347 |
} |
1348 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1349 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1350 |
break;
|
1351 |
case MODE_SELECT:
|
1352 |
DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer); |
1353 |
/* We don't support mode parameter changes.
|
1354 |
Allow the mode parameter header + block descriptors only. */
|
1355 |
if (r->req.cmd.xfer > 12) { |
1356 |
goto fail;
|
1357 |
} |
1358 |
break;
|
1359 |
case MODE_SELECT_10:
|
1360 |
DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer); |
1361 |
/* We don't support mode parameter changes.
|
1362 |
Allow the mode parameter header + block descriptors only. */
|
1363 |
if (r->req.cmd.xfer > 16) { |
1364 |
goto fail;
|
1365 |
} |
1366 |
break;
|
1367 |
case SEEK_10:
|
1368 |
DPRINTF("Seek(10) (sector %" PRId64 ")\n", r->req.cmd.lba); |
1369 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1370 |
goto illegal_lba;
|
1371 |
} |
1372 |
break;
|
1373 |
case WRITE_SAME_16:
|
1374 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1375 |
|
1376 |
DPRINTF("WRITE SAME(16) (sector %" PRId64 ", count %d)\n", |
1377 |
r->req.cmd.lba, len); |
1378 |
|
1379 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1380 |
goto illegal_lba;
|
1381 |
} |
1382 |
|
1383 |
/*
|
1384 |
* We only support WRITE SAME with the unmap bit set for now.
|
1385 |
*/
|
1386 |
if (!(buf[1] & 0x8)) { |
1387 |
goto fail;
|
1388 |
} |
1389 |
|
1390 |
rc = bdrv_discard(s->qdev.conf.bs, |
1391 |
r->req.cmd.lba * (s->qdev.blocksize / 512),
|
1392 |
len * (s->qdev.blocksize / 512));
|
1393 |
if (rc < 0) { |
1394 |
/* XXX: better error code ?*/
|
1395 |
goto fail;
|
1396 |
} |
1397 |
|
1398 |
break;
|
1399 |
default:
|
1400 |
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); |
1401 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
1402 |
return 0; |
1403 |
fail:
|
1404 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1405 |
return 0; |
1406 |
illegal_lba:
|
1407 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1408 |
return 0; |
1409 |
} |
1410 |
if (r->sector_count == 0 && r->iov.iov_len == 0) { |
1411 |
scsi_req_complete(&r->req, GOOD); |
1412 |
} |
1413 |
len = r->sector_count * 512 + r->iov.iov_len;
|
1414 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
1415 |
return -len;
|
1416 |
} else {
|
1417 |
if (!r->sector_count) {
|
1418 |
r->sector_count = -1;
|
1419 |
} |
1420 |
return len;
|
1421 |
} |
1422 |
} |
1423 |
|
1424 |
static void scsi_disk_reset(DeviceState *dev) |
1425 |
{ |
1426 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev); |
1427 |
uint64_t nb_sectors; |
1428 |
|
1429 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET)); |
1430 |
|
1431 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1432 |
nb_sectors /= s->qdev.blocksize / 512;
|
1433 |
if (nb_sectors) {
|
1434 |
nb_sectors--; |
1435 |
} |
1436 |
s->qdev.max_lba = nb_sectors; |
1437 |
} |
1438 |
|
1439 |
static void scsi_destroy(SCSIDevice *dev) |
1440 |
{ |
1441 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1442 |
|
1443 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE)); |
1444 |
blockdev_mark_auto_del(s->qdev.conf.bs); |
1445 |
} |
1446 |
|
1447 |
static void scsi_cd_change_media_cb(void *opaque, bool load) |
1448 |
{ |
1449 |
SCSIDiskState *s = opaque; |
1450 |
|
1451 |
/*
|
1452 |
* When a CD gets changed, we have to report an ejected state and
|
1453 |
* then a loaded state to guests so that they detect tray
|
1454 |
* open/close and media change events. Guests that do not use
|
1455 |
* GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
|
1456 |
* states rely on this behavior.
|
1457 |
*
|
1458 |
* media_changed governs the state machine used for unit attention
|
1459 |
* report. media_event is used by GET EVENT STATUS NOTIFICATION.
|
1460 |
*/
|
1461 |
s->media_changed = load; |
1462 |
s->tray_open = !load; |
1463 |
s->qdev.unit_attention = SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM); |
1464 |
s->media_event = true;
|
1465 |
s->eject_request = false;
|
1466 |
} |
1467 |
|
1468 |
static void scsi_cd_eject_request_cb(void *opaque, bool force) |
1469 |
{ |
1470 |
SCSIDiskState *s = opaque; |
1471 |
|
1472 |
s->eject_request = true;
|
1473 |
if (force) {
|
1474 |
s->tray_locked = false;
|
1475 |
} |
1476 |
} |
1477 |
|
1478 |
static bool scsi_cd_is_tray_open(void *opaque) |
1479 |
{ |
1480 |
return ((SCSIDiskState *)opaque)->tray_open;
|
1481 |
} |
1482 |
|
1483 |
static bool scsi_cd_is_medium_locked(void *opaque) |
1484 |
{ |
1485 |
return ((SCSIDiskState *)opaque)->tray_locked;
|
1486 |
} |
1487 |
|
1488 |
static const BlockDevOps scsi_cd_block_ops = { |
1489 |
.change_media_cb = scsi_cd_change_media_cb, |
1490 |
.eject_request_cb = scsi_cd_eject_request_cb, |
1491 |
.is_tray_open = scsi_cd_is_tray_open, |
1492 |
.is_medium_locked = scsi_cd_is_medium_locked, |
1493 |
}; |
1494 |
|
1495 |
static void scsi_disk_unit_attention_reported(SCSIDevice *dev) |
1496 |
{ |
1497 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1498 |
if (s->media_changed) {
|
1499 |
s->media_changed = false;
|
1500 |
s->qdev.unit_attention = SENSE_CODE(MEDIUM_CHANGED); |
1501 |
} |
1502 |
} |
1503 |
|
1504 |
static int scsi_initfn(SCSIDevice *dev) |
1505 |
{ |
1506 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1507 |
DriveInfo *dinfo; |
1508 |
|
1509 |
if (!s->qdev.conf.bs) {
|
1510 |
error_report("drive property not set");
|
1511 |
return -1; |
1512 |
} |
1513 |
|
1514 |
if (!s->removable && !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1515 |
error_report("Device needs media, but drive is empty");
|
1516 |
return -1; |
1517 |
} |
1518 |
|
1519 |
if (!s->serial) {
|
1520 |
/* try to fall back to value set with legacy -drive serial=... */
|
1521 |
dinfo = drive_get_by_blockdev(s->qdev.conf.bs); |
1522 |
if (*dinfo->serial) {
|
1523 |
s->serial = g_strdup(dinfo->serial); |
1524 |
} |
1525 |
} |
1526 |
|
1527 |
if (!s->version) {
|
1528 |
s->version = g_strdup(QEMU_VERSION); |
1529 |
} |
1530 |
|
1531 |
if (bdrv_is_sg(s->qdev.conf.bs)) {
|
1532 |
error_report("unwanted /dev/sg*");
|
1533 |
return -1; |
1534 |
} |
1535 |
|
1536 |
if (s->removable) {
|
1537 |
bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_cd_block_ops, s); |
1538 |
} |
1539 |
bdrv_set_buffer_alignment(s->qdev.conf.bs, s->qdev.blocksize); |
1540 |
|
1541 |
bdrv_iostatus_enable(s->qdev.conf.bs); |
1542 |
add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, NULL);
|
1543 |
return 0; |
1544 |
} |
1545 |
|
1546 |
static int scsi_hd_initfn(SCSIDevice *dev) |
1547 |
{ |
1548 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1549 |
s->qdev.blocksize = s->qdev.conf.logical_block_size; |
1550 |
s->qdev.type = TYPE_DISK; |
1551 |
return scsi_initfn(&s->qdev);
|
1552 |
} |
1553 |
|
1554 |
static int scsi_cd_initfn(SCSIDevice *dev) |
1555 |
{ |
1556 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1557 |
s->qdev.blocksize = 2048;
|
1558 |
s->qdev.type = TYPE_ROM; |
1559 |
s->removable = true;
|
1560 |
return scsi_initfn(&s->qdev);
|
1561 |
} |
1562 |
|
1563 |
static int scsi_disk_initfn(SCSIDevice *dev) |
1564 |
{ |
1565 |
DriveInfo *dinfo; |
1566 |
|
1567 |
if (!dev->conf.bs) {
|
1568 |
return scsi_initfn(dev); /* ... and die there */ |
1569 |
} |
1570 |
|
1571 |
dinfo = drive_get_by_blockdev(dev->conf.bs); |
1572 |
if (dinfo->media_cd) {
|
1573 |
return scsi_cd_initfn(dev);
|
1574 |
} else {
|
1575 |
return scsi_hd_initfn(dev);
|
1576 |
} |
1577 |
} |
1578 |
|
1579 |
static const SCSIReqOps scsi_disk_reqops = { |
1580 |
.size = sizeof(SCSIDiskReq),
|
1581 |
.free_req = scsi_free_request, |
1582 |
.send_command = scsi_send_command, |
1583 |
.read_data = scsi_read_data, |
1584 |
.write_data = scsi_write_data, |
1585 |
.cancel_io = scsi_cancel_io, |
1586 |
.get_buf = scsi_get_buf, |
1587 |
}; |
1588 |
|
1589 |
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
|
1590 |
uint8_t *buf, void *hba_private)
|
1591 |
{ |
1592 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
1593 |
SCSIRequest *req; |
1594 |
|
1595 |
req = scsi_req_alloc(&scsi_disk_reqops, &s->qdev, tag, lun, hba_private); |
1596 |
return req;
|
1597 |
} |
1598 |
|
1599 |
#ifdef __linux__
|
1600 |
static int get_device_type(SCSIDiskState *s) |
1601 |
{ |
1602 |
BlockDriverState *bdrv = s->qdev.conf.bs; |
1603 |
uint8_t cmd[16];
|
1604 |
uint8_t buf[36];
|
1605 |
uint8_t sensebuf[8];
|
1606 |
sg_io_hdr_t io_header; |
1607 |
int ret;
|
1608 |
|
1609 |
memset(cmd, 0, sizeof(cmd)); |
1610 |
memset(buf, 0, sizeof(buf)); |
1611 |
cmd[0] = INQUIRY;
|
1612 |
cmd[4] = sizeof(buf); |
1613 |
|
1614 |
memset(&io_header, 0, sizeof(io_header)); |
1615 |
io_header.interface_id = 'S';
|
1616 |
io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
1617 |
io_header.dxfer_len = sizeof(buf);
|
1618 |
io_header.dxferp = buf; |
1619 |
io_header.cmdp = cmd; |
1620 |
io_header.cmd_len = sizeof(cmd);
|
1621 |
io_header.mx_sb_len = sizeof(sensebuf);
|
1622 |
io_header.sbp = sensebuf; |
1623 |
io_header.timeout = 6000; /* XXX */ |
1624 |
|
1625 |
ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
1626 |
if (ret < 0 || io_header.driver_status || io_header.host_status) { |
1627 |
return -1; |
1628 |
} |
1629 |
s->qdev.type = buf[0];
|
1630 |
s->removable = (buf[1] & 0x80) != 0; |
1631 |
return 0; |
1632 |
} |
1633 |
|
1634 |
static int scsi_block_initfn(SCSIDevice *dev) |
1635 |
{ |
1636 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1637 |
int sg_version;
|
1638 |
int rc;
|
1639 |
|
1640 |
if (!s->qdev.conf.bs) {
|
1641 |
error_report("scsi-block: drive property not set");
|
1642 |
return -1; |
1643 |
} |
1644 |
|
1645 |
/* check we are using a driver managing SG_IO (version 3 and after) */
|
1646 |
if (bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 || |
1647 |
sg_version < 30000) {
|
1648 |
error_report("scsi-block: scsi generic interface too old");
|
1649 |
return -1; |
1650 |
} |
1651 |
|
1652 |
/* get device type from INQUIRY data */
|
1653 |
rc = get_device_type(s); |
1654 |
if (rc < 0) { |
1655 |
error_report("scsi-block: INQUIRY failed");
|
1656 |
return -1; |
1657 |
} |
1658 |
|
1659 |
/* Make a guess for the block size, we'll fix it when the guest sends.
|
1660 |
* READ CAPACITY. If they don't, they likely would assume these sizes
|
1661 |
* anyway. (TODO: check in /sys).
|
1662 |
*/
|
1663 |
if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) {
|
1664 |
s->qdev.blocksize = 2048;
|
1665 |
} else {
|
1666 |
s->qdev.blocksize = 512;
|
1667 |
} |
1668 |
return scsi_initfn(&s->qdev);
|
1669 |
} |
1670 |
|
1671 |
static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
|
1672 |
uint32_t lun, uint8_t *buf, |
1673 |
void *hba_private)
|
1674 |
{ |
1675 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
1676 |
|
1677 |
switch (buf[0]) { |
1678 |
case READ_6:
|
1679 |
case READ_10:
|
1680 |
case READ_12:
|
1681 |
case READ_16:
|
1682 |
case WRITE_6:
|
1683 |
case WRITE_10:
|
1684 |
case WRITE_12:
|
1685 |
case WRITE_16:
|
1686 |
case WRITE_VERIFY_10:
|
1687 |
case WRITE_VERIFY_12:
|
1688 |
case WRITE_VERIFY_16:
|
1689 |
/* MMC writing cannot be done via pread/pwrite, because it sometimes
|
1690 |
* involves writing beyond the maximum LBA or to negative LBA (lead-in).
|
1691 |
* And once you do these writes, reading from the block device is
|
1692 |
* unreliable, too. It is even possible that reads deliver random data
|
1693 |
* from the host page cache (this is probably a Linux bug).
|
1694 |
*
|
1695 |
* We might use scsi_disk_reqops as long as no writing commands are
|
1696 |
* seen, but performance usually isn't paramount on optical media. So,
|
1697 |
* just make scsi-block operate the same as scsi-generic for them.
|
1698 |
*/
|
1699 |
if (s->qdev.type != TYPE_ROM) {
|
1700 |
return scsi_req_alloc(&scsi_disk_reqops, &s->qdev, tag, lun,
|
1701 |
hba_private); |
1702 |
} |
1703 |
} |
1704 |
|
1705 |
return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun,
|
1706 |
hba_private); |
1707 |
} |
1708 |
#endif
|
1709 |
|
1710 |
#define DEFINE_SCSI_DISK_PROPERTIES() \
|
1711 |
DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \ |
1712 |
DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
|
1713 |
DEFINE_PROP_STRING("serial", SCSIDiskState, serial)
|
1714 |
|
1715 |
static Property scsi_hd_properties[] = {
|
1716 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1717 |
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false), |
1718 |
DEFINE_PROP_END_OF_LIST(), |
1719 |
}; |
1720 |
|
1721 |
static void scsi_hd_class_initfn(ObjectClass *klass, void *data) |
1722 |
{ |
1723 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1724 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
1725 |
|
1726 |
sc->init = scsi_hd_initfn; |
1727 |
sc->destroy = scsi_destroy; |
1728 |
sc->alloc_req = scsi_new_request; |
1729 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
1730 |
dc->fw_name = "disk";
|
1731 |
dc->desc = "virtual SCSI disk";
|
1732 |
dc->reset = scsi_disk_reset; |
1733 |
dc->props = scsi_hd_properties; |
1734 |
} |
1735 |
|
1736 |
static TypeInfo scsi_hd_info = {
|
1737 |
.name = "scsi-hd",
|
1738 |
.parent = TYPE_SCSI_DEVICE, |
1739 |
.instance_size = sizeof(SCSIDiskState),
|
1740 |
.class_init = scsi_hd_class_initfn, |
1741 |
}; |
1742 |
|
1743 |
static Property scsi_cd_properties[] = {
|
1744 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1745 |
DEFINE_PROP_END_OF_LIST(), |
1746 |
}; |
1747 |
|
1748 |
static void scsi_cd_class_initfn(ObjectClass *klass, void *data) |
1749 |
{ |
1750 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1751 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
1752 |
|
1753 |
sc->init = scsi_cd_initfn; |
1754 |
sc->destroy = scsi_destroy; |
1755 |
sc->alloc_req = scsi_new_request; |
1756 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
1757 |
dc->fw_name = "disk";
|
1758 |
dc->desc = "virtual SCSI CD-ROM";
|
1759 |
dc->reset = scsi_disk_reset; |
1760 |
dc->props = scsi_cd_properties; |
1761 |
} |
1762 |
|
1763 |
static TypeInfo scsi_cd_info = {
|
1764 |
.name = "scsi-cd",
|
1765 |
.parent = TYPE_SCSI_DEVICE, |
1766 |
.instance_size = sizeof(SCSIDiskState),
|
1767 |
.class_init = scsi_cd_class_initfn, |
1768 |
}; |
1769 |
|
1770 |
#ifdef __linux__
|
1771 |
static Property scsi_block_properties[] = {
|
1772 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1773 |
DEFINE_PROP_END_OF_LIST(), |
1774 |
}; |
1775 |
|
1776 |
static void scsi_block_class_initfn(ObjectClass *klass, void *data) |
1777 |
{ |
1778 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1779 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
1780 |
|
1781 |
sc->init = scsi_block_initfn; |
1782 |
sc->destroy = scsi_destroy; |
1783 |
sc->alloc_req = scsi_block_new_request; |
1784 |
dc->fw_name = "disk";
|
1785 |
dc->desc = "SCSI block device passthrough";
|
1786 |
dc->reset = scsi_disk_reset; |
1787 |
dc->props = scsi_block_properties; |
1788 |
} |
1789 |
|
1790 |
static TypeInfo scsi_block_info = {
|
1791 |
.name = "scsi-block",
|
1792 |
.parent = TYPE_SCSI_DEVICE, |
1793 |
.instance_size = sizeof(SCSIDiskState),
|
1794 |
.class_init = scsi_block_class_initfn, |
1795 |
}; |
1796 |
#endif
|
1797 |
|
1798 |
static Property scsi_disk_properties[] = {
|
1799 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1800 |
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false), |
1801 |
DEFINE_PROP_END_OF_LIST(), |
1802 |
}; |
1803 |
|
1804 |
static void scsi_disk_class_initfn(ObjectClass *klass, void *data) |
1805 |
{ |
1806 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1807 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
1808 |
|
1809 |
sc->init = scsi_disk_initfn; |
1810 |
sc->destroy = scsi_destroy; |
1811 |
sc->alloc_req = scsi_new_request; |
1812 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
1813 |
dc->fw_name = "disk";
|
1814 |
dc->desc = "virtual SCSI disk or CD-ROM (legacy)";
|
1815 |
dc->reset = scsi_disk_reset; |
1816 |
dc->props = scsi_disk_properties; |
1817 |
} |
1818 |
|
1819 |
static TypeInfo scsi_disk_info = {
|
1820 |
.name = "scsi-disk",
|
1821 |
.parent = TYPE_SCSI_DEVICE, |
1822 |
.instance_size = sizeof(SCSIDiskState),
|
1823 |
.class_init = scsi_disk_class_initfn, |
1824 |
}; |
1825 |
|
1826 |
static void scsi_disk_register_types(void) |
1827 |
{ |
1828 |
type_register_static(&scsi_hd_info); |
1829 |
type_register_static(&scsi_cd_info); |
1830 |
#ifdef __linux__
|
1831 |
type_register_static(&scsi_block_info); |
1832 |
#endif
|
1833 |
type_register_static(&scsi_disk_info); |
1834 |
} |
1835 |
|
1836 |
type_init(scsi_disk_register_types) |