root / hw / scsi-disk.c @ 0200db65
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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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#define SCSI_DMA_BUF_SIZE 131072 |
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#define SCSI_MAX_INQUIRY_LEN 256 |
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#define SCSI_REQ_STATUS_RETRY 0x01 |
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#define SCSI_REQ_STATUS_RETRY_TYPE_MASK 0x06 |
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#define SCSI_REQ_STATUS_RETRY_READ 0x00 |
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#define SCSI_REQ_STATUS_RETRY_WRITE 0x02 |
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#define SCSI_REQ_STATUS_RETRY_FLUSH 0x04 |
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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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uint32_t status; |
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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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BlockDriverState *bs; |
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/* The qemu block layer uses a fixed 512 byte sector size.
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This is the number of 512 byte blocks in a single scsi sector. */
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int cluster_size;
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uint32_t removable; |
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uint64_t max_lba; |
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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, int type); |
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static int scsi_disk_emulate_command(SCSIDiskReq *r); |
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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); |
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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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} |
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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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} |
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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->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->bs, &r->acct); |
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} |
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if (ret) {
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if (scsi_handle_rw_error(r, -ret, SCSI_REQ_STATUS_RETRY_READ)) {
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return;
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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); |
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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->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, SCSI_REQ_STATUS_RETRY_FLUSH)) {
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return;
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} |
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} |
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scsi_req_complete(&r->req, GOOD); |
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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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} |
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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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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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} |
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n = scsi_init_iovec(r); |
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bdrv_acct_start(s->bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_READ); |
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r->req.aiocb = bdrv_aio_readv(s->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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static int scsi_handle_rw_error(SCSIDiskReq *r, int error, int type) |
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{ |
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int is_read = (type == SCSI_REQ_STATUS_RETRY_READ);
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
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BlockErrorAction action = bdrv_get_on_error(s->bs, is_read); |
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if (action == BLOCK_ERR_IGNORE) {
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bdrv_mon_event(s->bs, BDRV_ACTION_IGNORE, is_read); |
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return 0; |
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} |
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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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type &= SCSI_REQ_STATUS_RETRY_TYPE_MASK; |
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r->status |= SCSI_REQ_STATUS_RETRY | type; |
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bdrv_mon_event(s->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->bs, error); |
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} else {
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switch (error) {
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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)); |
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break;
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default:
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scsi_check_condition(r, SENSE_CODE(IO_ERROR)); |
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break;
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} |
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bdrv_mon_event(s->bs, BDRV_ACTION_REPORT, is_read); |
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} |
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return 1; |
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} |
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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; |
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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->req.aiocb != NULL) { |
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r->req.aiocb = NULL;
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bdrv_acct_done(s->bs, &r->acct); |
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} |
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if (ret) {
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if (scsi_handle_rw_error(r, -ret, SCSI_REQ_STATUS_RETRY_WRITE)) {
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return;
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} |
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} |
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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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if (r->sector_count == 0) { |
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scsi_req_complete(&r->req, GOOD); |
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} else {
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scsi_init_iovec(r); |
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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); |
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} |
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} |
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static void scsi_write_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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/* No data transfer may already be in progress */
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assert(r->req.aiocb == NULL);
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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_write_complete(r, -EINVAL); |
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return;
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} |
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n = r->qiov.size / 512;
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if (n) {
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if (s->tray_open) {
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scsi_write_complete(r, -ENOMEDIUM); |
297 |
} |
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bdrv_acct_start(s->bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_WRITE); |
299 |
r->req.aiocb = bdrv_aio_writev(s->bs, r->sector, &r->qiov, n, |
300 |
scsi_write_complete, r); |
301 |
if (r->req.aiocb == NULL) { |
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scsi_write_complete(r, -ENOMEM); |
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} |
304 |
} else {
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/* Called for the first time. Ask the driver to send us more data. */
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scsi_write_complete(r, 0);
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} |
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} |
309 |
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static void scsi_dma_restart_bh(void *opaque) |
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{ |
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SCSIDiskState *s = opaque; |
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SCSIRequest *req; |
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SCSIDiskReq *r; |
315 |
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qemu_bh_delete(s->bh); |
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s->bh = NULL;
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QTAILQ_FOREACH(req, &s->qdev.requests, next) { |
320 |
r = DO_UPCAST(SCSIDiskReq, req, req); |
321 |
if (r->status & SCSI_REQ_STATUS_RETRY) {
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int status = r->status;
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int ret;
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r->status &= |
326 |
~(SCSI_REQ_STATUS_RETRY | SCSI_REQ_STATUS_RETRY_TYPE_MASK); |
327 |
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switch (status & SCSI_REQ_STATUS_RETRY_TYPE_MASK) {
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case SCSI_REQ_STATUS_RETRY_READ:
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scsi_read_data(&r->req); |
331 |
break;
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case SCSI_REQ_STATUS_RETRY_WRITE:
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scsi_write_data(&r->req); |
334 |
break;
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case SCSI_REQ_STATUS_RETRY_FLUSH:
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ret = scsi_disk_emulate_command(r); |
337 |
if (ret == 0) { |
338 |
scsi_req_complete(&r->req, GOOD); |
339 |
} |
340 |
} |
341 |
} |
342 |
} |
343 |
} |
344 |
|
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static void scsi_dma_restart_cb(void *opaque, int running, RunState state) |
346 |
{ |
347 |
SCSIDiskState *s = opaque; |
348 |
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349 |
if (!running)
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350 |
return;
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351 |
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352 |
if (!s->bh) {
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s->bh = qemu_bh_new(scsi_dma_restart_bh, s); |
354 |
qemu_bh_schedule(s->bh); |
355 |
} |
356 |
} |
357 |
|
358 |
/* Return a pointer to the data buffer. */
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359 |
static uint8_t *scsi_get_buf(SCSIRequest *req)
|
360 |
{ |
361 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
362 |
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363 |
return (uint8_t *)r->iov.iov_base;
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364 |
} |
365 |
|
366 |
static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) |
367 |
{ |
368 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
369 |
int buflen = 0; |
370 |
|
371 |
if (req->cmd.buf[1] & 0x2) { |
372 |
/* Command support data - optional, not implemented */
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373 |
BADF("optional INQUIRY command support request not implemented\n");
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374 |
return -1; |
375 |
} |
376 |
|
377 |
if (req->cmd.buf[1] & 0x1) { |
378 |
/* Vital product data */
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379 |
uint8_t page_code = req->cmd.buf[2];
|
380 |
if (req->cmd.xfer < 4) { |
381 |
BADF("Error: Inquiry (EVPD[%02X]) buffer size %zd is "
|
382 |
"less than 4\n", page_code, req->cmd.xfer);
|
383 |
return -1; |
384 |
} |
385 |
|
386 |
if (s->qdev.type == TYPE_ROM) {
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387 |
outbuf[buflen++] = 5;
|
388 |
} else {
|
389 |
outbuf[buflen++] = 0;
|
390 |
} |
391 |
outbuf[buflen++] = page_code ; // this page
|
392 |
outbuf[buflen++] = 0x00;
|
393 |
|
394 |
switch (page_code) {
|
395 |
case 0x00: /* Supported page codes, mandatory */ |
396 |
{ |
397 |
int pages;
|
398 |
DPRINTF("Inquiry EVPD[Supported pages] "
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399 |
"buffer size %zd\n", req->cmd.xfer);
|
400 |
pages = buflen++; |
401 |
outbuf[buflen++] = 0x00; // list of supported pages (this page) |
402 |
if (s->serial)
|
403 |
outbuf[buflen++] = 0x80; // unit serial number |
404 |
outbuf[buflen++] = 0x83; // device identification |
405 |
if (s->qdev.type == TYPE_DISK) {
|
406 |
outbuf[buflen++] = 0xb0; // block limits |
407 |
outbuf[buflen++] = 0xb2; // thin provisioning |
408 |
} |
409 |
outbuf[pages] = buflen - pages - 1; // number of pages |
410 |
break;
|
411 |
} |
412 |
case 0x80: /* Device serial number, optional */ |
413 |
{ |
414 |
int l;
|
415 |
|
416 |
if (!s->serial) {
|
417 |
DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
|
418 |
return -1; |
419 |
} |
420 |
|
421 |
l = strlen(s->serial); |
422 |
if (l > req->cmd.xfer)
|
423 |
l = req->cmd.xfer; |
424 |
if (l > 20) |
425 |
l = 20;
|
426 |
|
427 |
DPRINTF("Inquiry EVPD[Serial number] "
|
428 |
"buffer size %zd\n", req->cmd.xfer);
|
429 |
outbuf[buflen++] = l; |
430 |
memcpy(outbuf+buflen, s->serial, l); |
431 |
buflen += l; |
432 |
break;
|
433 |
} |
434 |
|
435 |
case 0x83: /* Device identification page, mandatory */ |
436 |
{ |
437 |
int max_len = 255 - 8; |
438 |
int id_len = strlen(bdrv_get_device_name(s->bs));
|
439 |
|
440 |
if (id_len > max_len)
|
441 |
id_len = max_len; |
442 |
DPRINTF("Inquiry EVPD[Device identification] "
|
443 |
"buffer size %zd\n", req->cmd.xfer);
|
444 |
|
445 |
outbuf[buflen++] = 4 + id_len;
|
446 |
outbuf[buflen++] = 0x2; // ASCII |
447 |
outbuf[buflen++] = 0; // not officially assigned |
448 |
outbuf[buflen++] = 0; // reserved |
449 |
outbuf[buflen++] = id_len; // length of data following
|
450 |
|
451 |
memcpy(outbuf+buflen, bdrv_get_device_name(s->bs), id_len); |
452 |
buflen += id_len; |
453 |
break;
|
454 |
} |
455 |
case 0xb0: /* block limits */ |
456 |
{ |
457 |
unsigned int unmap_sectors = |
458 |
s->qdev.conf.discard_granularity / s->qdev.blocksize; |
459 |
unsigned int min_io_size = |
460 |
s->qdev.conf.min_io_size / s->qdev.blocksize; |
461 |
unsigned int opt_io_size = |
462 |
s->qdev.conf.opt_io_size / s->qdev.blocksize; |
463 |
|
464 |
if (s->qdev.type == TYPE_ROM) {
|
465 |
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
|
466 |
page_code); |
467 |
return -1; |
468 |
} |
469 |
/* required VPD size with unmap support */
|
470 |
outbuf[3] = buflen = 0x3c; |
471 |
|
472 |
memset(outbuf + 4, 0, buflen - 4); |
473 |
|
474 |
/* optimal transfer length granularity */
|
475 |
outbuf[6] = (min_io_size >> 8) & 0xff; |
476 |
outbuf[7] = min_io_size & 0xff; |
477 |
|
478 |
/* optimal transfer length */
|
479 |
outbuf[12] = (opt_io_size >> 24) & 0xff; |
480 |
outbuf[13] = (opt_io_size >> 16) & 0xff; |
481 |
outbuf[14] = (opt_io_size >> 8) & 0xff; |
482 |
outbuf[15] = opt_io_size & 0xff; |
483 |
|
484 |
/* optimal unmap granularity */
|
485 |
outbuf[28] = (unmap_sectors >> 24) & 0xff; |
486 |
outbuf[29] = (unmap_sectors >> 16) & 0xff; |
487 |
outbuf[30] = (unmap_sectors >> 8) & 0xff; |
488 |
outbuf[31] = unmap_sectors & 0xff; |
489 |
break;
|
490 |
} |
491 |
case 0xb2: /* thin provisioning */ |
492 |
{ |
493 |
outbuf[3] = buflen = 8; |
494 |
outbuf[4] = 0; |
495 |
outbuf[5] = 0x40; /* write same with unmap supported */ |
496 |
outbuf[6] = 0; |
497 |
outbuf[7] = 0; |
498 |
break;
|
499 |
} |
500 |
default:
|
501 |
BADF("Error: unsupported Inquiry (EVPD[%02X]) "
|
502 |
"buffer size %zd\n", page_code, req->cmd.xfer);
|
503 |
return -1; |
504 |
} |
505 |
/* done with EVPD */
|
506 |
return buflen;
|
507 |
} |
508 |
|
509 |
/* Standard INQUIRY data */
|
510 |
if (req->cmd.buf[2] != 0) { |
511 |
BADF("Error: Inquiry (STANDARD) page or code "
|
512 |
"is non-zero [%02X]\n", req->cmd.buf[2]); |
513 |
return -1; |
514 |
} |
515 |
|
516 |
/* PAGE CODE == 0 */
|
517 |
if (req->cmd.xfer < 5) { |
518 |
BADF("Error: Inquiry (STANDARD) buffer size %zd "
|
519 |
"is less than 5\n", req->cmd.xfer);
|
520 |
return -1; |
521 |
} |
522 |
|
523 |
buflen = req->cmd.xfer; |
524 |
if (buflen > SCSI_MAX_INQUIRY_LEN)
|
525 |
buflen = SCSI_MAX_INQUIRY_LEN; |
526 |
|
527 |
memset(outbuf, 0, buflen);
|
528 |
|
529 |
outbuf[0] = s->qdev.type & 0x1f; |
530 |
if (s->qdev.type == TYPE_ROM) {
|
531 |
outbuf[1] = 0x80; |
532 |
memcpy(&outbuf[16], "QEMU CD-ROM ", 16); |
533 |
} else {
|
534 |
outbuf[1] = s->removable ? 0x80 : 0; |
535 |
memcpy(&outbuf[16], "QEMU HARDDISK ", 16); |
536 |
} |
537 |
memcpy(&outbuf[8], "QEMU ", 8); |
538 |
memset(&outbuf[32], 0, 4); |
539 |
memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version))); |
540 |
/*
|
541 |
* We claim conformance to SPC-3, which is required for guests
|
542 |
* to ask for modern features like READ CAPACITY(16) or the
|
543 |
* block characteristics VPD page by default. Not all of SPC-3
|
544 |
* is actually implemented, but we're good enough.
|
545 |
*/
|
546 |
outbuf[2] = 5; |
547 |
outbuf[3] = 2; /* Format 2 */ |
548 |
|
549 |
if (buflen > 36) { |
550 |
outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */ |
551 |
} else {
|
552 |
/* If the allocation length of CDB is too small,
|
553 |
the additional length is not adjusted */
|
554 |
outbuf[4] = 36 - 5; |
555 |
} |
556 |
|
557 |
/* Sync data transfer and TCQ. */
|
558 |
outbuf[7] = 0x10 | (req->bus->tcq ? 0x02 : 0); |
559 |
return buflen;
|
560 |
} |
561 |
|
562 |
static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf, |
563 |
int page_control)
|
564 |
{ |
565 |
BlockDriverState *bdrv = s->bs; |
566 |
int cylinders, heads, secs;
|
567 |
uint8_t *p = *p_outbuf; |
568 |
|
569 |
/*
|
570 |
* If Changeable Values are requested, a mask denoting those mode parameters
|
571 |
* that are changeable shall be returned. As we currently don't support
|
572 |
* parameter changes via MODE_SELECT all bits are returned set to zero.
|
573 |
* The buffer was already menset to zero by the caller of this function.
|
574 |
*/
|
575 |
switch (page) {
|
576 |
case 4: /* Rigid disk device geometry page. */ |
577 |
if (s->qdev.type == TYPE_ROM) {
|
578 |
return -1; |
579 |
} |
580 |
p[0] = 4; |
581 |
p[1] = 0x16; |
582 |
if (page_control == 1) { /* Changeable Values */ |
583 |
break;
|
584 |
} |
585 |
/* if a geometry hint is available, use it */
|
586 |
bdrv_get_geometry_hint(bdrv, &cylinders, &heads, &secs); |
587 |
p[2] = (cylinders >> 16) & 0xff; |
588 |
p[3] = (cylinders >> 8) & 0xff; |
589 |
p[4] = cylinders & 0xff; |
590 |
p[5] = heads & 0xff; |
591 |
/* Write precomp start cylinder, disabled */
|
592 |
p[6] = (cylinders >> 16) & 0xff; |
593 |
p[7] = (cylinders >> 8) & 0xff; |
594 |
p[8] = cylinders & 0xff; |
595 |
/* Reduced current start cylinder, disabled */
|
596 |
p[9] = (cylinders >> 16) & 0xff; |
597 |
p[10] = (cylinders >> 8) & 0xff; |
598 |
p[11] = cylinders & 0xff; |
599 |
/* Device step rate [ns], 200ns */
|
600 |
p[12] = 0; |
601 |
p[13] = 200; |
602 |
/* Landing zone cylinder */
|
603 |
p[14] = 0xff; |
604 |
p[15] = 0xff; |
605 |
p[16] = 0xff; |
606 |
/* Medium rotation rate [rpm], 5400 rpm */
|
607 |
p[20] = (5400 >> 8) & 0xff; |
608 |
p[21] = 5400 & 0xff; |
609 |
break;
|
610 |
|
611 |
case 5: /* Flexible disk device geometry page. */ |
612 |
if (s->qdev.type == TYPE_ROM) {
|
613 |
return -1; |
614 |
} |
615 |
p[0] = 5; |
616 |
p[1] = 0x1e; |
617 |
if (page_control == 1) { /* Changeable Values */ |
618 |
break;
|
619 |
} |
620 |
/* Transfer rate [kbit/s], 5Mbit/s */
|
621 |
p[2] = 5000 >> 8; |
622 |
p[3] = 5000 & 0xff; |
623 |
/* if a geometry hint is available, use it */
|
624 |
bdrv_get_geometry_hint(bdrv, &cylinders, &heads, &secs); |
625 |
p[4] = heads & 0xff; |
626 |
p[5] = secs & 0xff; |
627 |
p[6] = s->cluster_size * 2; |
628 |
p[8] = (cylinders >> 8) & 0xff; |
629 |
p[9] = cylinders & 0xff; |
630 |
/* Write precomp start cylinder, disabled */
|
631 |
p[10] = (cylinders >> 8) & 0xff; |
632 |
p[11] = cylinders & 0xff; |
633 |
/* Reduced current start cylinder, disabled */
|
634 |
p[12] = (cylinders >> 8) & 0xff; |
635 |
p[13] = cylinders & 0xff; |
636 |
/* Device step rate [100us], 100us */
|
637 |
p[14] = 0; |
638 |
p[15] = 1; |
639 |
/* Device step pulse width [us], 1us */
|
640 |
p[16] = 1; |
641 |
/* Device head settle delay [100us], 100us */
|
642 |
p[17] = 0; |
643 |
p[18] = 1; |
644 |
/* Motor on delay [0.1s], 0.1s */
|
645 |
p[19] = 1; |
646 |
/* Motor off delay [0.1s], 0.1s */
|
647 |
p[20] = 1; |
648 |
/* Medium rotation rate [rpm], 5400 rpm */
|
649 |
p[28] = (5400 >> 8) & 0xff; |
650 |
p[29] = 5400 & 0xff; |
651 |
break;
|
652 |
|
653 |
case 8: /* Caching page. */ |
654 |
p[0] = 8; |
655 |
p[1] = 0x12; |
656 |
if (page_control == 1) { /* Changeable Values */ |
657 |
break;
|
658 |
} |
659 |
if (bdrv_enable_write_cache(s->bs)) {
|
660 |
p[2] = 4; /* WCE */ |
661 |
} |
662 |
break;
|
663 |
|
664 |
case 0x2a: /* CD Capabilities and Mechanical Status page. */ |
665 |
if (s->qdev.type != TYPE_ROM) {
|
666 |
return -1; |
667 |
} |
668 |
p[0] = 0x2a; |
669 |
p[1] = 0x14; |
670 |
if (page_control == 1) { /* Changeable Values */ |
671 |
break;
|
672 |
} |
673 |
p[2] = 3; // CD-R & CD-RW read |
674 |
p[3] = 0; // Writing not supported |
675 |
p[4] = 0x7f; /* Audio, composite, digital out, |
676 |
mode 2 form 1&2, multi session */
|
677 |
p[5] = 0xff; /* CD DA, DA accurate, RW supported, |
678 |
RW corrected, C2 errors, ISRC,
|
679 |
UPC, Bar code */
|
680 |
p[6] = 0x2d | (s->tray_locked ? 2 : 0); |
681 |
/* Locking supported, jumper present, eject, tray */
|
682 |
p[7] = 0; /* no volume & mute control, no |
683 |
changer */
|
684 |
p[8] = (50 * 176) >> 8; // 50x read speed |
685 |
p[9] = (50 * 176) & 0xff; |
686 |
p[10] = 0 >> 8; // No volume |
687 |
p[11] = 0 & 0xff; |
688 |
p[12] = 2048 >> 8; // 2M buffer |
689 |
p[13] = 2048 & 0xff; |
690 |
p[14] = (16 * 176) >> 8; // 16x read speed current |
691 |
p[15] = (16 * 176) & 0xff; |
692 |
p[18] = (16 * 176) >> 8; // 16x write speed |
693 |
p[19] = (16 * 176) & 0xff; |
694 |
p[20] = (16 * 176) >> 8; // 16x write speed current |
695 |
p[21] = (16 * 176) & 0xff; |
696 |
break;
|
697 |
|
698 |
default:
|
699 |
return -1; |
700 |
} |
701 |
|
702 |
*p_outbuf += p[1] + 2; |
703 |
return p[1] + 2; |
704 |
} |
705 |
|
706 |
static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf) |
707 |
{ |
708 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
709 |
uint64_t nb_sectors; |
710 |
int page, dbd, buflen, ret, page_control;
|
711 |
uint8_t *p; |
712 |
uint8_t dev_specific_param; |
713 |
|
714 |
dbd = r->req.cmd.buf[1] & 0x8; |
715 |
page = r->req.cmd.buf[2] & 0x3f; |
716 |
page_control = (r->req.cmd.buf[2] & 0xc0) >> 6; |
717 |
DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
|
718 |
(r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 10, page, r->req.cmd.xfer, page_control); |
719 |
memset(outbuf, 0, r->req.cmd.xfer);
|
720 |
p = outbuf; |
721 |
|
722 |
if (bdrv_is_read_only(s->bs)) {
|
723 |
dev_specific_param = 0x80; /* Readonly. */ |
724 |
} else {
|
725 |
dev_specific_param = 0x00;
|
726 |
} |
727 |
|
728 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
729 |
p[1] = 0; /* Default media type. */ |
730 |
p[2] = dev_specific_param;
|
731 |
p[3] = 0; /* Block descriptor length. */ |
732 |
p += 4;
|
733 |
} else { /* MODE_SENSE_10 */ |
734 |
p[2] = 0; /* Default media type. */ |
735 |
p[3] = dev_specific_param;
|
736 |
p[6] = p[7] = 0; /* Block descriptor length. */ |
737 |
p += 8;
|
738 |
} |
739 |
|
740 |
bdrv_get_geometry(s->bs, &nb_sectors); |
741 |
if (!dbd && nb_sectors) {
|
742 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
743 |
outbuf[3] = 8; /* Block descriptor length */ |
744 |
} else { /* MODE_SENSE_10 */ |
745 |
outbuf[7] = 8; /* Block descriptor length */ |
746 |
} |
747 |
nb_sectors /= s->cluster_size; |
748 |
if (nb_sectors > 0xffffff) |
749 |
nb_sectors = 0;
|
750 |
p[0] = 0; /* media density code */ |
751 |
p[1] = (nb_sectors >> 16) & 0xff; |
752 |
p[2] = (nb_sectors >> 8) & 0xff; |
753 |
p[3] = nb_sectors & 0xff; |
754 |
p[4] = 0; /* reserved */ |
755 |
p[5] = 0; /* bytes 5-7 are the sector size in bytes */ |
756 |
p[6] = s->cluster_size * 2; |
757 |
p[7] = 0; |
758 |
p += 8;
|
759 |
} |
760 |
|
761 |
if (page_control == 3) { |
762 |
/* Saved Values */
|
763 |
scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED)); |
764 |
return -1; |
765 |
} |
766 |
|
767 |
if (page == 0x3f) { |
768 |
for (page = 0; page <= 0x3e; page++) { |
769 |
mode_sense_page(s, page, &p, page_control); |
770 |
} |
771 |
} else {
|
772 |
ret = mode_sense_page(s, page, &p, page_control); |
773 |
if (ret == -1) { |
774 |
return -1; |
775 |
} |
776 |
} |
777 |
|
778 |
buflen = p - outbuf; |
779 |
/*
|
780 |
* The mode data length field specifies the length in bytes of the
|
781 |
* following data that is available to be transferred. The mode data
|
782 |
* length does not include itself.
|
783 |
*/
|
784 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
785 |
outbuf[0] = buflen - 1; |
786 |
} else { /* MODE_SENSE_10 */ |
787 |
outbuf[0] = ((buflen - 2) >> 8) & 0xff; |
788 |
outbuf[1] = (buflen - 2) & 0xff; |
789 |
} |
790 |
if (buflen > r->req.cmd.xfer)
|
791 |
buflen = r->req.cmd.xfer; |
792 |
return buflen;
|
793 |
} |
794 |
|
795 |
static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf) |
796 |
{ |
797 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
798 |
int start_track, format, msf, toclen;
|
799 |
uint64_t nb_sectors; |
800 |
|
801 |
msf = req->cmd.buf[1] & 2; |
802 |
format = req->cmd.buf[2] & 0xf; |
803 |
start_track = req->cmd.buf[6];
|
804 |
bdrv_get_geometry(s->bs, &nb_sectors); |
805 |
DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1); |
806 |
nb_sectors /= s->cluster_size; |
807 |
switch (format) {
|
808 |
case 0: |
809 |
toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track); |
810 |
break;
|
811 |
case 1: |
812 |
/* multi session : only a single session defined */
|
813 |
toclen = 12;
|
814 |
memset(outbuf, 0, 12); |
815 |
outbuf[1] = 0x0a; |
816 |
outbuf[2] = 0x01; |
817 |
outbuf[3] = 0x01; |
818 |
break;
|
819 |
case 2: |
820 |
toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track); |
821 |
break;
|
822 |
default:
|
823 |
return -1; |
824 |
} |
825 |
if (toclen > req->cmd.xfer)
|
826 |
toclen = req->cmd.xfer; |
827 |
return toclen;
|
828 |
} |
829 |
|
830 |
static int scsi_disk_emulate_start_stop(SCSIDiskReq *r) |
831 |
{ |
832 |
SCSIRequest *req = &r->req; |
833 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
834 |
bool start = req->cmd.buf[4] & 1; |
835 |
bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */ |
836 |
|
837 |
if (s->qdev.type == TYPE_ROM && loej) {
|
838 |
if (!start && !s->tray_open && s->tray_locked) {
|
839 |
scsi_check_condition(r, |
840 |
bdrv_is_inserted(s->bs) |
841 |
? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED) |
842 |
: SENSE_CODE(NOT_READY_REMOVAL_PREVENTED)); |
843 |
return -1; |
844 |
} |
845 |
bdrv_eject(s->bs, !start); |
846 |
s->tray_open = !start; |
847 |
} |
848 |
return 0; |
849 |
} |
850 |
|
851 |
static int scsi_disk_emulate_command(SCSIDiskReq *r) |
852 |
{ |
853 |
SCSIRequest *req = &r->req; |
854 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
855 |
uint64_t nb_sectors; |
856 |
uint8_t *outbuf; |
857 |
int buflen = 0; |
858 |
|
859 |
if (!r->iov.iov_base) {
|
860 |
/*
|
861 |
* FIXME: we shouldn't return anything bigger than 4k, but the code
|
862 |
* requires the buffer to be as big as req->cmd.xfer in several
|
863 |
* places. So, do not allow CDBs with a very large ALLOCATION
|
864 |
* LENGTH. The real fix would be to modify scsi_read_data and
|
865 |
* dma_buf_read, so that they return data beyond the buflen
|
866 |
* as all zeros.
|
867 |
*/
|
868 |
if (req->cmd.xfer > 65536) { |
869 |
goto illegal_request;
|
870 |
} |
871 |
r->buflen = MAX(4096, req->cmd.xfer);
|
872 |
r->iov.iov_base = qemu_blockalign(s->bs, r->buflen); |
873 |
} |
874 |
|
875 |
outbuf = r->iov.iov_base; |
876 |
switch (req->cmd.buf[0]) { |
877 |
case TEST_UNIT_READY:
|
878 |
if (s->tray_open || !bdrv_is_inserted(s->bs))
|
879 |
goto not_ready;
|
880 |
break;
|
881 |
case INQUIRY:
|
882 |
buflen = scsi_disk_emulate_inquiry(req, outbuf); |
883 |
if (buflen < 0) |
884 |
goto illegal_request;
|
885 |
break;
|
886 |
case MODE_SENSE:
|
887 |
case MODE_SENSE_10:
|
888 |
buflen = scsi_disk_emulate_mode_sense(r, outbuf); |
889 |
if (buflen < 0) |
890 |
goto illegal_request;
|
891 |
break;
|
892 |
case READ_TOC:
|
893 |
buflen = scsi_disk_emulate_read_toc(req, outbuf); |
894 |
if (buflen < 0) |
895 |
goto illegal_request;
|
896 |
break;
|
897 |
case RESERVE:
|
898 |
if (req->cmd.buf[1] & 1) |
899 |
goto illegal_request;
|
900 |
break;
|
901 |
case RESERVE_10:
|
902 |
if (req->cmd.buf[1] & 3) |
903 |
goto illegal_request;
|
904 |
break;
|
905 |
case RELEASE:
|
906 |
if (req->cmd.buf[1] & 1) |
907 |
goto illegal_request;
|
908 |
break;
|
909 |
case RELEASE_10:
|
910 |
if (req->cmd.buf[1] & 3) |
911 |
goto illegal_request;
|
912 |
break;
|
913 |
case START_STOP:
|
914 |
if (scsi_disk_emulate_start_stop(r) < 0) { |
915 |
return -1; |
916 |
} |
917 |
break;
|
918 |
case ALLOW_MEDIUM_REMOVAL:
|
919 |
s->tray_locked = req->cmd.buf[4] & 1; |
920 |
bdrv_lock_medium(s->bs, req->cmd.buf[4] & 1); |
921 |
break;
|
922 |
case READ_CAPACITY_10:
|
923 |
/* The normal LEN field for this command is zero. */
|
924 |
memset(outbuf, 0, 8); |
925 |
bdrv_get_geometry(s->bs, &nb_sectors); |
926 |
if (!nb_sectors)
|
927 |
goto not_ready;
|
928 |
nb_sectors /= s->cluster_size; |
929 |
/* Returned value is the address of the last sector. */
|
930 |
nb_sectors--; |
931 |
/* Remember the new size for read/write sanity checking. */
|
932 |
s->max_lba = nb_sectors; |
933 |
/* Clip to 2TB, instead of returning capacity modulo 2TB. */
|
934 |
if (nb_sectors > UINT32_MAX)
|
935 |
nb_sectors = UINT32_MAX; |
936 |
outbuf[0] = (nb_sectors >> 24) & 0xff; |
937 |
outbuf[1] = (nb_sectors >> 16) & 0xff; |
938 |
outbuf[2] = (nb_sectors >> 8) & 0xff; |
939 |
outbuf[3] = nb_sectors & 0xff; |
940 |
outbuf[4] = 0; |
941 |
outbuf[5] = 0; |
942 |
outbuf[6] = s->cluster_size * 2; |
943 |
outbuf[7] = 0; |
944 |
buflen = 8;
|
945 |
break;
|
946 |
case GET_CONFIGURATION:
|
947 |
memset(outbuf, 0, 8); |
948 |
/* ??? This should probably return much more information. For now
|
949 |
just return the basic header indicating the CD-ROM profile. */
|
950 |
outbuf[7] = 8; // CD-ROM |
951 |
buflen = 8;
|
952 |
break;
|
953 |
case SERVICE_ACTION_IN_16:
|
954 |
/* Service Action In subcommands. */
|
955 |
if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) { |
956 |
DPRINTF("SAI READ CAPACITY(16)\n");
|
957 |
memset(outbuf, 0, req->cmd.xfer);
|
958 |
bdrv_get_geometry(s->bs, &nb_sectors); |
959 |
if (!nb_sectors)
|
960 |
goto not_ready;
|
961 |
nb_sectors /= s->cluster_size; |
962 |
/* Returned value is the address of the last sector. */
|
963 |
nb_sectors--; |
964 |
/* Remember the new size for read/write sanity checking. */
|
965 |
s->max_lba = nb_sectors; |
966 |
outbuf[0] = (nb_sectors >> 56) & 0xff; |
967 |
outbuf[1] = (nb_sectors >> 48) & 0xff; |
968 |
outbuf[2] = (nb_sectors >> 40) & 0xff; |
969 |
outbuf[3] = (nb_sectors >> 32) & 0xff; |
970 |
outbuf[4] = (nb_sectors >> 24) & 0xff; |
971 |
outbuf[5] = (nb_sectors >> 16) & 0xff; |
972 |
outbuf[6] = (nb_sectors >> 8) & 0xff; |
973 |
outbuf[7] = nb_sectors & 0xff; |
974 |
outbuf[8] = 0; |
975 |
outbuf[9] = 0; |
976 |
outbuf[10] = s->cluster_size * 2; |
977 |
outbuf[11] = 0; |
978 |
outbuf[12] = 0; |
979 |
outbuf[13] = get_physical_block_exp(&s->qdev.conf);
|
980 |
|
981 |
/* set TPE bit if the format supports discard */
|
982 |
if (s->qdev.conf.discard_granularity) {
|
983 |
outbuf[14] = 0x80; |
984 |
} |
985 |
|
986 |
/* Protection, exponent and lowest lba field left blank. */
|
987 |
buflen = req->cmd.xfer; |
988 |
break;
|
989 |
} |
990 |
DPRINTF("Unsupported Service Action In\n");
|
991 |
goto illegal_request;
|
992 |
case VERIFY_10:
|
993 |
break;
|
994 |
default:
|
995 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
996 |
return -1; |
997 |
} |
998 |
return buflen;
|
999 |
|
1000 |
not_ready:
|
1001 |
if (s->tray_open || !bdrv_is_inserted(s->bs)) {
|
1002 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
1003 |
} else {
|
1004 |
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); |
1005 |
} |
1006 |
return -1; |
1007 |
|
1008 |
illegal_request:
|
1009 |
if (r->req.status == -1) { |
1010 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1011 |
} |
1012 |
return -1; |
1013 |
} |
1014 |
|
1015 |
/* Execute a scsi command. Returns the length of the data expected by the
|
1016 |
command. This will be Positive for data transfers from the device
|
1017 |
(eg. disk reads), negative for transfers to the device (eg. disk writes),
|
1018 |
and zero if the command does not transfer any data. */
|
1019 |
|
1020 |
static int32_t scsi_send_command(SCSIRequest *req, uint8_t *buf)
|
1021 |
{ |
1022 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1023 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1024 |
int32_t len; |
1025 |
uint8_t command; |
1026 |
int rc;
|
1027 |
|
1028 |
command = buf[0];
|
1029 |
DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", req->lun, req->tag, buf[0]); |
1030 |
|
1031 |
#ifdef DEBUG_SCSI
|
1032 |
{ |
1033 |
int i;
|
1034 |
for (i = 1; i < r->req.cmd.len; i++) { |
1035 |
printf(" 0x%02x", buf[i]);
|
1036 |
} |
1037 |
printf("\n");
|
1038 |
} |
1039 |
#endif
|
1040 |
|
1041 |
switch (command) {
|
1042 |
case TEST_UNIT_READY:
|
1043 |
case INQUIRY:
|
1044 |
case MODE_SENSE:
|
1045 |
case MODE_SENSE_10:
|
1046 |
case RESERVE:
|
1047 |
case RESERVE_10:
|
1048 |
case RELEASE:
|
1049 |
case RELEASE_10:
|
1050 |
case START_STOP:
|
1051 |
case ALLOW_MEDIUM_REMOVAL:
|
1052 |
case READ_CAPACITY_10:
|
1053 |
case READ_TOC:
|
1054 |
case GET_CONFIGURATION:
|
1055 |
case SERVICE_ACTION_IN_16:
|
1056 |
case VERIFY_10:
|
1057 |
rc = scsi_disk_emulate_command(r); |
1058 |
if (rc < 0) { |
1059 |
return 0; |
1060 |
} |
1061 |
|
1062 |
r->iov.iov_len = rc; |
1063 |
break;
|
1064 |
case SYNCHRONIZE_CACHE:
|
1065 |
bdrv_acct_start(s->bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
1066 |
r->req.aiocb = bdrv_aio_flush(s->bs, scsi_flush_complete, r); |
1067 |
if (r->req.aiocb == NULL) { |
1068 |
scsi_flush_complete(r, -EIO); |
1069 |
} |
1070 |
return 0; |
1071 |
case READ_6:
|
1072 |
case READ_10:
|
1073 |
case READ_12:
|
1074 |
case READ_16:
|
1075 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1076 |
DPRINTF("Read (sector %" PRId64 ", count %d)\n", r->req.cmd.lba, len); |
1077 |
if (r->req.cmd.lba > s->max_lba)
|
1078 |
goto illegal_lba;
|
1079 |
r->sector = r->req.cmd.lba * s->cluster_size; |
1080 |
r->sector_count = len * s->cluster_size; |
1081 |
break;
|
1082 |
case WRITE_6:
|
1083 |
case WRITE_10:
|
1084 |
case WRITE_12:
|
1085 |
case WRITE_16:
|
1086 |
case WRITE_VERIFY_10:
|
1087 |
case WRITE_VERIFY_12:
|
1088 |
case WRITE_VERIFY_16:
|
1089 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1090 |
DPRINTF("Write %s(sector %" PRId64 ", count %d)\n", |
1091 |
(command & 0xe) == 0xe ? "And Verify " : "", |
1092 |
r->req.cmd.lba, len); |
1093 |
if (r->req.cmd.lba > s->max_lba)
|
1094 |
goto illegal_lba;
|
1095 |
r->sector = r->req.cmd.lba * s->cluster_size; |
1096 |
r->sector_count = len * s->cluster_size; |
1097 |
break;
|
1098 |
case MODE_SELECT:
|
1099 |
DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer); |
1100 |
/* We don't support mode parameter changes.
|
1101 |
Allow the mode parameter header + block descriptors only. */
|
1102 |
if (r->req.cmd.xfer > 12) { |
1103 |
goto fail;
|
1104 |
} |
1105 |
break;
|
1106 |
case MODE_SELECT_10:
|
1107 |
DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer); |
1108 |
/* We don't support mode parameter changes.
|
1109 |
Allow the mode parameter header + block descriptors only. */
|
1110 |
if (r->req.cmd.xfer > 16) { |
1111 |
goto fail;
|
1112 |
} |
1113 |
break;
|
1114 |
case SEEK_6:
|
1115 |
case SEEK_10:
|
1116 |
DPRINTF("Seek(%d) (sector %" PRId64 ")\n", command == SEEK_6 ? 6 : 10, |
1117 |
r->req.cmd.lba); |
1118 |
if (r->req.cmd.lba > s->max_lba) {
|
1119 |
goto illegal_lba;
|
1120 |
} |
1121 |
break;
|
1122 |
case WRITE_SAME_16:
|
1123 |
len = r->req.cmd.xfer / s->qdev.blocksize; |
1124 |
|
1125 |
DPRINTF("WRITE SAME(16) (sector %" PRId64 ", count %d)\n", |
1126 |
r->req.cmd.lba, len); |
1127 |
|
1128 |
if (r->req.cmd.lba > s->max_lba) {
|
1129 |
goto illegal_lba;
|
1130 |
} |
1131 |
|
1132 |
/*
|
1133 |
* We only support WRITE SAME with the unmap bit set for now.
|
1134 |
*/
|
1135 |
if (!(buf[1] & 0x8)) { |
1136 |
goto fail;
|
1137 |
} |
1138 |
|
1139 |
rc = bdrv_discard(s->bs, r->req.cmd.lba * s->cluster_size, |
1140 |
len * s->cluster_size); |
1141 |
if (rc < 0) { |
1142 |
/* XXX: better error code ?*/
|
1143 |
goto fail;
|
1144 |
} |
1145 |
|
1146 |
break;
|
1147 |
case REQUEST_SENSE:
|
1148 |
abort(); |
1149 |
default:
|
1150 |
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); |
1151 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
1152 |
return 0; |
1153 |
fail:
|
1154 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1155 |
return 0; |
1156 |
illegal_lba:
|
1157 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1158 |
return 0; |
1159 |
} |
1160 |
if (r->sector_count == 0 && r->iov.iov_len == 0) { |
1161 |
scsi_req_complete(&r->req, GOOD); |
1162 |
} |
1163 |
len = r->sector_count * 512 + r->iov.iov_len;
|
1164 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
1165 |
return -len;
|
1166 |
} else {
|
1167 |
if (!r->sector_count)
|
1168 |
r->sector_count = -1;
|
1169 |
return len;
|
1170 |
} |
1171 |
} |
1172 |
|
1173 |
static void scsi_disk_reset(DeviceState *dev) |
1174 |
{ |
1175 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev); |
1176 |
uint64_t nb_sectors; |
1177 |
|
1178 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET)); |
1179 |
|
1180 |
bdrv_get_geometry(s->bs, &nb_sectors); |
1181 |
nb_sectors /= s->cluster_size; |
1182 |
if (nb_sectors) {
|
1183 |
nb_sectors--; |
1184 |
} |
1185 |
s->max_lba = nb_sectors; |
1186 |
} |
1187 |
|
1188 |
static void scsi_destroy(SCSIDevice *dev) |
1189 |
{ |
1190 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1191 |
|
1192 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE)); |
1193 |
blockdev_mark_auto_del(s->qdev.conf.bs); |
1194 |
} |
1195 |
|
1196 |
static void scsi_cd_change_media_cb(void *opaque, bool load) |
1197 |
{ |
1198 |
((SCSIDiskState *)opaque)->tray_open = !load; |
1199 |
} |
1200 |
|
1201 |
static bool scsi_cd_is_tray_open(void *opaque) |
1202 |
{ |
1203 |
return ((SCSIDiskState *)opaque)->tray_open;
|
1204 |
} |
1205 |
|
1206 |
static bool scsi_cd_is_medium_locked(void *opaque) |
1207 |
{ |
1208 |
return ((SCSIDiskState *)opaque)->tray_locked;
|
1209 |
} |
1210 |
|
1211 |
static const BlockDevOps scsi_cd_block_ops = { |
1212 |
.change_media_cb = scsi_cd_change_media_cb, |
1213 |
.is_tray_open = scsi_cd_is_tray_open, |
1214 |
.is_medium_locked = scsi_cd_is_medium_locked, |
1215 |
}; |
1216 |
|
1217 |
static int scsi_initfn(SCSIDevice *dev, uint8_t scsi_type) |
1218 |
{ |
1219 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1220 |
DriveInfo *dinfo; |
1221 |
|
1222 |
if (!s->qdev.conf.bs) {
|
1223 |
error_report("scsi-disk: drive property not set");
|
1224 |
return -1; |
1225 |
} |
1226 |
s->bs = s->qdev.conf.bs; |
1227 |
|
1228 |
if (scsi_type == TYPE_DISK && !bdrv_is_inserted(s->bs)) {
|
1229 |
error_report("Device needs media, but drive is empty");
|
1230 |
return -1; |
1231 |
} |
1232 |
|
1233 |
if (!s->serial) {
|
1234 |
/* try to fall back to value set with legacy -drive serial=... */
|
1235 |
dinfo = drive_get_by_blockdev(s->bs); |
1236 |
if (*dinfo->serial) {
|
1237 |
s->serial = g_strdup(dinfo->serial); |
1238 |
} |
1239 |
} |
1240 |
|
1241 |
if (!s->version) {
|
1242 |
s->version = g_strdup(QEMU_VERSION); |
1243 |
} |
1244 |
|
1245 |
if (bdrv_is_sg(s->bs)) {
|
1246 |
error_report("scsi-disk: unwanted /dev/sg*");
|
1247 |
return -1; |
1248 |
} |
1249 |
|
1250 |
if (scsi_type == TYPE_ROM) {
|
1251 |
bdrv_set_dev_ops(s->bs, &scsi_cd_block_ops, s); |
1252 |
s->qdev.blocksize = 2048;
|
1253 |
} else if (scsi_type == TYPE_DISK) { |
1254 |
s->qdev.blocksize = s->qdev.conf.logical_block_size; |
1255 |
} else {
|
1256 |
error_report("scsi-disk: Unhandled SCSI type %02x", scsi_type);
|
1257 |
return -1; |
1258 |
} |
1259 |
s->cluster_size = s->qdev.blocksize / 512;
|
1260 |
bdrv_set_buffer_alignment(s->bs, s->qdev.blocksize); |
1261 |
|
1262 |
s->qdev.type = scsi_type; |
1263 |
qemu_add_vm_change_state_handler(scsi_dma_restart_cb, s); |
1264 |
bdrv_iostatus_enable(s->bs); |
1265 |
add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, ",0");
|
1266 |
return 0; |
1267 |
} |
1268 |
|
1269 |
static int scsi_hd_initfn(SCSIDevice *dev) |
1270 |
{ |
1271 |
return scsi_initfn(dev, TYPE_DISK);
|
1272 |
} |
1273 |
|
1274 |
static int scsi_cd_initfn(SCSIDevice *dev) |
1275 |
{ |
1276 |
return scsi_initfn(dev, TYPE_ROM);
|
1277 |
} |
1278 |
|
1279 |
static int scsi_disk_initfn(SCSIDevice *dev) |
1280 |
{ |
1281 |
DriveInfo *dinfo; |
1282 |
uint8_t scsi_type; |
1283 |
|
1284 |
if (!dev->conf.bs) {
|
1285 |
scsi_type = TYPE_DISK; /* will die in scsi_initfn() */
|
1286 |
} else {
|
1287 |
dinfo = drive_get_by_blockdev(dev->conf.bs); |
1288 |
scsi_type = dinfo->media_cd ? TYPE_ROM : TYPE_DISK; |
1289 |
} |
1290 |
|
1291 |
return scsi_initfn(dev, scsi_type);
|
1292 |
} |
1293 |
|
1294 |
static SCSIReqOps scsi_disk_reqops = {
|
1295 |
.size = sizeof(SCSIDiskReq),
|
1296 |
.free_req = scsi_free_request, |
1297 |
.send_command = scsi_send_command, |
1298 |
.read_data = scsi_read_data, |
1299 |
.write_data = scsi_write_data, |
1300 |
.cancel_io = scsi_cancel_io, |
1301 |
.get_buf = scsi_get_buf, |
1302 |
}; |
1303 |
|
1304 |
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag,
|
1305 |
uint32_t lun, void *hba_private)
|
1306 |
{ |
1307 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
1308 |
SCSIRequest *req; |
1309 |
|
1310 |
req = scsi_req_alloc(&scsi_disk_reqops, &s->qdev, tag, lun, hba_private); |
1311 |
return req;
|
1312 |
} |
1313 |
|
1314 |
#define DEFINE_SCSI_DISK_PROPERTIES() \
|
1315 |
DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \ |
1316 |
DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
|
1317 |
DEFINE_PROP_STRING("serial", SCSIDiskState, serial)
|
1318 |
|
1319 |
static SCSIDeviceInfo scsi_disk_info[] = {
|
1320 |
{ |
1321 |
.qdev.name = "scsi-hd",
|
1322 |
.qdev.fw_name = "disk",
|
1323 |
.qdev.desc = "virtual SCSI disk",
|
1324 |
.qdev.size = sizeof(SCSIDiskState),
|
1325 |
.qdev.reset = scsi_disk_reset, |
1326 |
.init = scsi_hd_initfn, |
1327 |
.destroy = scsi_destroy, |
1328 |
.alloc_req = scsi_new_request, |
1329 |
.qdev.props = (Property[]) { |
1330 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1331 |
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false), |
1332 |
DEFINE_PROP_END_OF_LIST(), |
1333 |
} |
1334 |
},{ |
1335 |
.qdev.name = "scsi-cd",
|
1336 |
.qdev.fw_name = "disk",
|
1337 |
.qdev.desc = "virtual SCSI CD-ROM",
|
1338 |
.qdev.size = sizeof(SCSIDiskState),
|
1339 |
.qdev.reset = scsi_disk_reset, |
1340 |
.init = scsi_cd_initfn, |
1341 |
.destroy = scsi_destroy, |
1342 |
.alloc_req = scsi_new_request, |
1343 |
.qdev.props = (Property[]) { |
1344 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1345 |
DEFINE_PROP_END_OF_LIST(), |
1346 |
}, |
1347 |
},{ |
1348 |
.qdev.name = "scsi-disk", /* legacy -device scsi-disk */ |
1349 |
.qdev.fw_name = "disk",
|
1350 |
.qdev.desc = "virtual SCSI disk or CD-ROM (legacy)",
|
1351 |
.qdev.size = sizeof(SCSIDiskState),
|
1352 |
.qdev.reset = scsi_disk_reset, |
1353 |
.init = scsi_disk_initfn, |
1354 |
.destroy = scsi_destroy, |
1355 |
.alloc_req = scsi_new_request, |
1356 |
.qdev.props = (Property[]) { |
1357 |
DEFINE_SCSI_DISK_PROPERTIES(), |
1358 |
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false), |
1359 |
DEFINE_PROP_END_OF_LIST(), |
1360 |
} |
1361 |
} |
1362 |
}; |
1363 |
|
1364 |
static void scsi_disk_register_devices(void) |
1365 |
{ |
1366 |
int i;
|
1367 |
|
1368 |
for (i = 0; i < ARRAY_SIZE(scsi_disk_info); i++) { |
1369 |
scsi_qdev_register(&scsi_disk_info[i]); |
1370 |
} |
1371 |
} |
1372 |
device_init(scsi_disk_register_devices) |