root / hw / scsi-disk.c @ 4d5b97da
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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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#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 "hw/block-common.h" |
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#include "dma.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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#define SCSI_MAX_MODE_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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bool started;
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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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#define SCSI_DISK_F_REMOVABLE 0 |
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#define SCSI_DISK_F_DPOFUA 1 |
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struct SCSIDiskState
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{ |
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SCSIDevice qdev; |
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uint32_t features; |
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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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uint64_t wwn; |
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QEMUBH *bh; |
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char *version;
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char *serial;
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char *vendor;
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char *product;
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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); |
83 |
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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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/* 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, size_t size)
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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 = 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_disk_save_request(QEMUFile *f, SCSIRequest *req) |
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{ |
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SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
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qemu_put_be64s(f, &r->sector); |
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qemu_put_be32s(f, &r->sector_count); |
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qemu_put_be32s(f, &r->buflen); |
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if (r->buflen) {
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if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
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qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len); |
142 |
} else if (!req->retry) { |
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uint32_t len = r->iov.iov_len; |
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qemu_put_be32s(f, &len); |
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qemu_put_buffer(f, r->iov.iov_base, r->iov.iov_len); |
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} |
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} |
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} |
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static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req) |
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{ |
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SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
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qemu_get_be64s(f, &r->sector); |
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qemu_get_be32s(f, &r->sector_count); |
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qemu_get_be32s(f, &r->buflen); |
157 |
if (r->buflen) {
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scsi_init_iovec(r, r->buflen); |
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if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
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qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len); |
161 |
} else if (!r->req.retry) { |
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uint32_t len; |
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qemu_get_be32s(f, &len); |
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r->iov.iov_len = len; |
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assert(r->iov.iov_len <= r->buflen); |
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qemu_get_buffer(f, r->iov.iov_base, r->iov.iov_len); |
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} |
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} |
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qemu_iovec_init_external(&r->qiov, &r->iov, 1);
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} |
172 |
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static void scsi_aio_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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assert(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); |
181 |
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if (ret < 0) { |
183 |
if (scsi_handle_rw_error(r, -ret)) {
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goto done;
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} |
186 |
} |
187 |
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scsi_req_complete(&r->req, GOOD); |
189 |
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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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} |
195 |
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static bool scsi_is_cmd_fua(SCSICommand *cmd) |
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{ |
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switch (cmd->buf[0]) { |
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case READ_10:
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case READ_12:
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case READ_16:
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case WRITE_10:
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case WRITE_12:
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case WRITE_16:
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return (cmd->buf[1] & 8) != 0; |
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case VERIFY_10:
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case VERIFY_12:
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case VERIFY_16:
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case WRITE_VERIFY_10:
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case WRITE_VERIFY_12:
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case WRITE_VERIFY_16:
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return true; |
214 |
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case READ_6:
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case WRITE_6:
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default:
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return false; |
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} |
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} |
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static void scsi_write_do_fua(SCSIDiskReq *r) |
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{ |
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SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
225 |
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if (scsi_is_cmd_fua(&r->req.cmd)) {
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bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
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r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r); |
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return;
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} |
231 |
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scsi_req_complete(&r->req, GOOD); |
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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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} |
237 |
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static void scsi_dma_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); |
242 |
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assert(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); |
246 |
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if (ret < 0) { |
248 |
if (scsi_handle_rw_error(r, -ret)) {
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goto done;
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} |
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} |
252 |
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r->sector += r->sector_count; |
254 |
r->sector_count = 0;
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if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
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scsi_write_do_fua(r); |
257 |
return;
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} else {
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scsi_req_complete(&r->req, GOOD); |
260 |
} |
261 |
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done:
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if (!r->req.io_canceled) {
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scsi_req_unref(&r->req); |
265 |
} |
266 |
} |
267 |
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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); |
272 |
int n;
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273 |
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assert(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); |
277 |
|
278 |
if (ret < 0) { |
279 |
if (scsi_handle_rw_error(r, -ret)) {
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280 |
goto done;
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281 |
} |
282 |
} |
283 |
|
284 |
DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->qiov.size);
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285 |
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286 |
n = r->qiov.size / 512;
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287 |
r->sector += n; |
288 |
r->sector_count -= n; |
289 |
scsi_req_data(&r->req, r->qiov.size); |
290 |
|
291 |
done:
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292 |
if (!r->req.io_canceled) {
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293 |
scsi_req_unref(&r->req); |
294 |
} |
295 |
} |
296 |
|
297 |
/* Actually issue a read to the block device. */
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298 |
static void scsi_do_read(void *opaque, int ret) |
299 |
{ |
300 |
SCSIDiskReq *r = opaque; |
301 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
302 |
uint32_t n; |
303 |
|
304 |
if (r->req.aiocb != NULL) { |
305 |
r->req.aiocb = NULL;
|
306 |
bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
307 |
} |
308 |
|
309 |
if (ret < 0) { |
310 |
if (scsi_handle_rw_error(r, -ret)) {
|
311 |
goto done;
|
312 |
} |
313 |
} |
314 |
|
315 |
if (r->req.io_canceled) {
|
316 |
return;
|
317 |
} |
318 |
|
319 |
/* The request is used as the AIO opaque value, so add a ref. */
|
320 |
scsi_req_ref(&r->req); |
321 |
|
322 |
if (r->req.sg) {
|
323 |
dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_READ); |
324 |
r->req.resid -= r->req.sg->size; |
325 |
r->req.aiocb = dma_bdrv_read(s->qdev.conf.bs, r->req.sg, r->sector, |
326 |
scsi_dma_complete, r); |
327 |
} else {
|
328 |
n = scsi_init_iovec(r, SCSI_DMA_BUF_SIZE); |
329 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_READ); |
330 |
r->req.aiocb = bdrv_aio_readv(s->qdev.conf.bs, r->sector, &r->qiov, n, |
331 |
scsi_read_complete, r); |
332 |
} |
333 |
|
334 |
done:
|
335 |
if (!r->req.io_canceled) {
|
336 |
scsi_req_unref(&r->req); |
337 |
} |
338 |
} |
339 |
|
340 |
/* Read more data from scsi device into buffer. */
|
341 |
static void scsi_read_data(SCSIRequest *req) |
342 |
{ |
343 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
344 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
345 |
bool first;
|
346 |
|
347 |
DPRINTF("Read sector_count=%d\n", r->sector_count);
|
348 |
if (r->sector_count == 0) { |
349 |
/* This also clears the sense buffer for REQUEST SENSE. */
|
350 |
scsi_req_complete(&r->req, GOOD); |
351 |
return;
|
352 |
} |
353 |
|
354 |
/* No data transfer may already be in progress */
|
355 |
assert(r->req.aiocb == NULL);
|
356 |
|
357 |
/* The request is used as the AIO opaque value, so add a ref. */
|
358 |
scsi_req_ref(&r->req); |
359 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
360 |
DPRINTF("Data transfer direction invalid\n");
|
361 |
scsi_read_complete(r, -EINVAL); |
362 |
return;
|
363 |
} |
364 |
|
365 |
if (s->tray_open) {
|
366 |
scsi_read_complete(r, -ENOMEDIUM); |
367 |
return;
|
368 |
} |
369 |
|
370 |
first = !r->started; |
371 |
r->started = true;
|
372 |
if (first && scsi_is_cmd_fua(&r->req.cmd)) {
|
373 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
374 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_do_read, r); |
375 |
} else {
|
376 |
scsi_do_read(r, 0);
|
377 |
} |
378 |
} |
379 |
|
380 |
/*
|
381 |
* scsi_handle_rw_error has two return values. 0 means that the error
|
382 |
* must be ignored, 1 means that the error has been processed and the
|
383 |
* caller should not do anything else for this request. Note that
|
384 |
* scsi_handle_rw_error always manages its reference counts, independent
|
385 |
* of the return value.
|
386 |
*/
|
387 |
static int scsi_handle_rw_error(SCSIDiskReq *r, int error) |
388 |
{ |
389 |
bool is_read = (r->req.cmd.xfer == SCSI_XFER_FROM_DEV);
|
390 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
391 |
BlockErrorAction action = bdrv_get_error_action(s->qdev.conf.bs, is_read, error); |
392 |
|
393 |
if (action == BDRV_ACTION_REPORT) {
|
394 |
switch (error) {
|
395 |
case ENOMEDIUM:
|
396 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
397 |
break;
|
398 |
case ENOMEM:
|
399 |
scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE)); |
400 |
break;
|
401 |
case EINVAL:
|
402 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
403 |
break;
|
404 |
default:
|
405 |
scsi_check_condition(r, SENSE_CODE(IO_ERROR)); |
406 |
break;
|
407 |
} |
408 |
} |
409 |
bdrv_error_action(s->qdev.conf.bs, action, is_read, error); |
410 |
if (action == BDRV_ACTION_STOP) {
|
411 |
scsi_req_retry(&r->req); |
412 |
} |
413 |
return action != BDRV_ACTION_IGNORE;
|
414 |
} |
415 |
|
416 |
static void scsi_write_complete(void * opaque, int ret) |
417 |
{ |
418 |
SCSIDiskReq *r = (SCSIDiskReq *)opaque; |
419 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
420 |
uint32_t n; |
421 |
|
422 |
if (r->req.aiocb != NULL) { |
423 |
r->req.aiocb = NULL;
|
424 |
bdrv_acct_done(s->qdev.conf.bs, &r->acct); |
425 |
} |
426 |
|
427 |
if (ret < 0) { |
428 |
if (scsi_handle_rw_error(r, -ret)) {
|
429 |
goto done;
|
430 |
} |
431 |
} |
432 |
|
433 |
n = r->qiov.size / 512;
|
434 |
r->sector += n; |
435 |
r->sector_count -= n; |
436 |
if (r->sector_count == 0) { |
437 |
scsi_write_do_fua(r); |
438 |
return;
|
439 |
} else {
|
440 |
scsi_init_iovec(r, SCSI_DMA_BUF_SIZE); |
441 |
DPRINTF("Write complete tag=0x%x more=%zd\n", r->req.tag, r->qiov.size);
|
442 |
scsi_req_data(&r->req, r->qiov.size); |
443 |
} |
444 |
|
445 |
done:
|
446 |
if (!r->req.io_canceled) {
|
447 |
scsi_req_unref(&r->req); |
448 |
} |
449 |
} |
450 |
|
451 |
static void scsi_write_data(SCSIRequest *req) |
452 |
{ |
453 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
454 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
455 |
uint32_t n; |
456 |
|
457 |
/* No data transfer may already be in progress */
|
458 |
assert(r->req.aiocb == NULL);
|
459 |
|
460 |
/* The request is used as the AIO opaque value, so add a ref. */
|
461 |
scsi_req_ref(&r->req); |
462 |
if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
|
463 |
DPRINTF("Data transfer direction invalid\n");
|
464 |
scsi_write_complete(r, -EINVAL); |
465 |
return;
|
466 |
} |
467 |
|
468 |
if (!r->req.sg && !r->qiov.size) {
|
469 |
/* Called for the first time. Ask the driver to send us more data. */
|
470 |
r->started = true;
|
471 |
scsi_write_complete(r, 0);
|
472 |
return;
|
473 |
} |
474 |
if (s->tray_open) {
|
475 |
scsi_write_complete(r, -ENOMEDIUM); |
476 |
return;
|
477 |
} |
478 |
|
479 |
if (r->req.cmd.buf[0] == VERIFY_10 || r->req.cmd.buf[0] == VERIFY_12 || |
480 |
r->req.cmd.buf[0] == VERIFY_16) {
|
481 |
if (r->req.sg) {
|
482 |
scsi_dma_complete(r, 0);
|
483 |
} else {
|
484 |
scsi_write_complete(r, 0);
|
485 |
} |
486 |
return;
|
487 |
} |
488 |
|
489 |
if (r->req.sg) {
|
490 |
dma_acct_start(s->qdev.conf.bs, &r->acct, r->req.sg, BDRV_ACCT_WRITE); |
491 |
r->req.resid -= r->req.sg->size; |
492 |
r->req.aiocb = dma_bdrv_write(s->qdev.conf.bs, r->req.sg, r->sector, |
493 |
scsi_dma_complete, r); |
494 |
} else {
|
495 |
n = r->qiov.size / 512;
|
496 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, n * BDRV_SECTOR_SIZE, BDRV_ACCT_WRITE); |
497 |
r->req.aiocb = bdrv_aio_writev(s->qdev.conf.bs, r->sector, &r->qiov, n, |
498 |
scsi_write_complete, r); |
499 |
} |
500 |
} |
501 |
|
502 |
/* Return a pointer to the data buffer. */
|
503 |
static uint8_t *scsi_get_buf(SCSIRequest *req)
|
504 |
{ |
505 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
506 |
|
507 |
return (uint8_t *)r->iov.iov_base;
|
508 |
} |
509 |
|
510 |
static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) |
511 |
{ |
512 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
513 |
int buflen = 0; |
514 |
int start;
|
515 |
|
516 |
if (req->cmd.buf[1] & 0x1) { |
517 |
/* Vital product data */
|
518 |
uint8_t page_code = req->cmd.buf[2];
|
519 |
|
520 |
outbuf[buflen++] = s->qdev.type & 0x1f;
|
521 |
outbuf[buflen++] = page_code ; // this page
|
522 |
outbuf[buflen++] = 0x00;
|
523 |
outbuf[buflen++] = 0x00;
|
524 |
start = buflen; |
525 |
|
526 |
switch (page_code) {
|
527 |
case 0x00: /* Supported page codes, mandatory */ |
528 |
{ |
529 |
DPRINTF("Inquiry EVPD[Supported pages] "
|
530 |
"buffer size %zd\n", req->cmd.xfer);
|
531 |
outbuf[buflen++] = 0x00; // list of supported pages (this page) |
532 |
if (s->serial) {
|
533 |
outbuf[buflen++] = 0x80; // unit serial number |
534 |
} |
535 |
outbuf[buflen++] = 0x83; // device identification |
536 |
if (s->qdev.type == TYPE_DISK) {
|
537 |
outbuf[buflen++] = 0xb0; // block limits |
538 |
outbuf[buflen++] = 0xb2; // thin provisioning |
539 |
} |
540 |
break;
|
541 |
} |
542 |
case 0x80: /* Device serial number, optional */ |
543 |
{ |
544 |
int l;
|
545 |
|
546 |
if (!s->serial) {
|
547 |
DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
|
548 |
return -1; |
549 |
} |
550 |
|
551 |
l = strlen(s->serial); |
552 |
if (l > 20) { |
553 |
l = 20;
|
554 |
} |
555 |
|
556 |
DPRINTF("Inquiry EVPD[Serial number] "
|
557 |
"buffer size %zd\n", req->cmd.xfer);
|
558 |
memcpy(outbuf+buflen, s->serial, l); |
559 |
buflen += l; |
560 |
break;
|
561 |
} |
562 |
|
563 |
case 0x83: /* Device identification page, mandatory */ |
564 |
{ |
565 |
const char *str = s->serial ?: bdrv_get_device_name(s->qdev.conf.bs); |
566 |
int max_len = s->serial ? 20 : 255 - 8; |
567 |
int id_len = strlen(str);
|
568 |
|
569 |
if (id_len > max_len) {
|
570 |
id_len = max_len; |
571 |
} |
572 |
DPRINTF("Inquiry EVPD[Device identification] "
|
573 |
"buffer size %zd\n", req->cmd.xfer);
|
574 |
|
575 |
outbuf[buflen++] = 0x2; // ASCII |
576 |
outbuf[buflen++] = 0; // not officially assigned |
577 |
outbuf[buflen++] = 0; // reserved |
578 |
outbuf[buflen++] = id_len; // length of data following
|
579 |
memcpy(outbuf+buflen, str, id_len); |
580 |
buflen += id_len; |
581 |
|
582 |
if (s->wwn) {
|
583 |
outbuf[buflen++] = 0x1; // Binary |
584 |
outbuf[buflen++] = 0x3; // NAA |
585 |
outbuf[buflen++] = 0; // reserved |
586 |
outbuf[buflen++] = 8;
|
587 |
stq_be_p(&outbuf[buflen], s->wwn); |
588 |
buflen += 8;
|
589 |
} |
590 |
break;
|
591 |
} |
592 |
case 0xb0: /* block limits */ |
593 |
{ |
594 |
unsigned int unmap_sectors = |
595 |
s->qdev.conf.discard_granularity / s->qdev.blocksize; |
596 |
unsigned int min_io_size = |
597 |
s->qdev.conf.min_io_size / s->qdev.blocksize; |
598 |
unsigned int opt_io_size = |
599 |
s->qdev.conf.opt_io_size / s->qdev.blocksize; |
600 |
|
601 |
if (s->qdev.type == TYPE_ROM) {
|
602 |
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
|
603 |
page_code); |
604 |
return -1; |
605 |
} |
606 |
/* required VPD size with unmap support */
|
607 |
buflen = 0x40;
|
608 |
memset(outbuf + 4, 0, buflen - 4); |
609 |
|
610 |
/* optimal transfer length granularity */
|
611 |
outbuf[6] = (min_io_size >> 8) & 0xff; |
612 |
outbuf[7] = min_io_size & 0xff; |
613 |
|
614 |
/* optimal transfer length */
|
615 |
outbuf[12] = (opt_io_size >> 24) & 0xff; |
616 |
outbuf[13] = (opt_io_size >> 16) & 0xff; |
617 |
outbuf[14] = (opt_io_size >> 8) & 0xff; |
618 |
outbuf[15] = opt_io_size & 0xff; |
619 |
|
620 |
/* optimal unmap granularity */
|
621 |
outbuf[28] = (unmap_sectors >> 24) & 0xff; |
622 |
outbuf[29] = (unmap_sectors >> 16) & 0xff; |
623 |
outbuf[30] = (unmap_sectors >> 8) & 0xff; |
624 |
outbuf[31] = unmap_sectors & 0xff; |
625 |
break;
|
626 |
} |
627 |
case 0xb2: /* thin provisioning */ |
628 |
{ |
629 |
buflen = 8;
|
630 |
outbuf[4] = 0; |
631 |
outbuf[5] = 0xe0; /* unmap & write_same 10/16 all supported */ |
632 |
outbuf[6] = s->qdev.conf.discard_granularity ? 2 : 1; |
633 |
outbuf[7] = 0; |
634 |
break;
|
635 |
} |
636 |
default:
|
637 |
return -1; |
638 |
} |
639 |
/* done with EVPD */
|
640 |
assert(buflen - start <= 255);
|
641 |
outbuf[start - 1] = buflen - start;
|
642 |
return buflen;
|
643 |
} |
644 |
|
645 |
/* Standard INQUIRY data */
|
646 |
if (req->cmd.buf[2] != 0) { |
647 |
return -1; |
648 |
} |
649 |
|
650 |
/* PAGE CODE == 0 */
|
651 |
buflen = req->cmd.xfer; |
652 |
if (buflen > SCSI_MAX_INQUIRY_LEN) {
|
653 |
buflen = SCSI_MAX_INQUIRY_LEN; |
654 |
} |
655 |
memset(outbuf, 0, buflen);
|
656 |
|
657 |
outbuf[0] = s->qdev.type & 0x1f; |
658 |
outbuf[1] = (s->features & (1 << SCSI_DISK_F_REMOVABLE)) ? 0x80 : 0; |
659 |
|
660 |
strpadcpy((char *) &outbuf[16], 16, s->product, ' '); |
661 |
strpadcpy((char *) &outbuf[8], 8, s->vendor, ' '); |
662 |
|
663 |
memset(&outbuf[32], 0, 4); |
664 |
memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version))); |
665 |
/*
|
666 |
* We claim conformance to SPC-3, which is required for guests
|
667 |
* to ask for modern features like READ CAPACITY(16) or the
|
668 |
* block characteristics VPD page by default. Not all of SPC-3
|
669 |
* is actually implemented, but we're good enough.
|
670 |
*/
|
671 |
outbuf[2] = 5; |
672 |
outbuf[3] = 2 | 0x10; /* Format 2, HiSup */ |
673 |
|
674 |
if (buflen > 36) { |
675 |
outbuf[4] = buflen - 5; /* Additional Length = (Len - 1) - 4 */ |
676 |
} else {
|
677 |
/* If the allocation length of CDB is too small,
|
678 |
the additional length is not adjusted */
|
679 |
outbuf[4] = 36 - 5; |
680 |
} |
681 |
|
682 |
/* Sync data transfer and TCQ. */
|
683 |
outbuf[7] = 0x10 | (req->bus->info->tcq ? 0x02 : 0); |
684 |
return buflen;
|
685 |
} |
686 |
|
687 |
static inline bool media_is_dvd(SCSIDiskState *s) |
688 |
{ |
689 |
uint64_t nb_sectors; |
690 |
if (s->qdev.type != TYPE_ROM) {
|
691 |
return false; |
692 |
} |
693 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
694 |
return false; |
695 |
} |
696 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
697 |
return nb_sectors > CD_MAX_SECTORS;
|
698 |
} |
699 |
|
700 |
static inline bool media_is_cd(SCSIDiskState *s) |
701 |
{ |
702 |
uint64_t nb_sectors; |
703 |
if (s->qdev.type != TYPE_ROM) {
|
704 |
return false; |
705 |
} |
706 |
if (!bdrv_is_inserted(s->qdev.conf.bs)) {
|
707 |
return false; |
708 |
} |
709 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
710 |
return nb_sectors <= CD_MAX_SECTORS;
|
711 |
} |
712 |
|
713 |
static int scsi_read_disc_information(SCSIDiskState *s, SCSIDiskReq *r, |
714 |
uint8_t *outbuf) |
715 |
{ |
716 |
uint8_t type = r->req.cmd.buf[1] & 7; |
717 |
|
718 |
if (s->qdev.type != TYPE_ROM) {
|
719 |
return -1; |
720 |
} |
721 |
|
722 |
/* Types 1/2 are only defined for Blu-Ray. */
|
723 |
if (type != 0) { |
724 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
725 |
return -1; |
726 |
} |
727 |
|
728 |
memset(outbuf, 0, 34); |
729 |
outbuf[1] = 32; |
730 |
outbuf[2] = 0xe; /* last session complete, disc finalized */ |
731 |
outbuf[3] = 1; /* first track on disc */ |
732 |
outbuf[4] = 1; /* # of sessions */ |
733 |
outbuf[5] = 1; /* first track of last session */ |
734 |
outbuf[6] = 1; /* last track of last session */ |
735 |
outbuf[7] = 0x20; /* unrestricted use */ |
736 |
outbuf[8] = 0x00; /* CD-ROM or DVD-ROM */ |
737 |
/* 9-10-11: most significant byte corresponding bytes 4-5-6 */
|
738 |
/* 12-23: not meaningful for CD-ROM or DVD-ROM */
|
739 |
/* 24-31: disc bar code */
|
740 |
/* 32: disc application code */
|
741 |
/* 33: number of OPC tables */
|
742 |
|
743 |
return 34; |
744 |
} |
745 |
|
746 |
static int scsi_read_dvd_structure(SCSIDiskState *s, SCSIDiskReq *r, |
747 |
uint8_t *outbuf) |
748 |
{ |
749 |
static const int rds_caps_size[5] = { |
750 |
[0] = 2048 + 4, |
751 |
[1] = 4 + 4, |
752 |
[3] = 188 + 4, |
753 |
[4] = 2048 + 4, |
754 |
}; |
755 |
|
756 |
uint8_t media = r->req.cmd.buf[1];
|
757 |
uint8_t layer = r->req.cmd.buf[6];
|
758 |
uint8_t format = r->req.cmd.buf[7];
|
759 |
int size = -1; |
760 |
|
761 |
if (s->qdev.type != TYPE_ROM) {
|
762 |
return -1; |
763 |
} |
764 |
if (media != 0) { |
765 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
766 |
return -1; |
767 |
} |
768 |
|
769 |
if (format != 0xff) { |
770 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
771 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
772 |
return -1; |
773 |
} |
774 |
if (media_is_cd(s)) {
|
775 |
scsi_check_condition(r, SENSE_CODE(INCOMPATIBLE_FORMAT)); |
776 |
return -1; |
777 |
} |
778 |
if (format >= ARRAY_SIZE(rds_caps_size)) {
|
779 |
return -1; |
780 |
} |
781 |
size = rds_caps_size[format]; |
782 |
memset(outbuf, 0, size);
|
783 |
} |
784 |
|
785 |
switch (format) {
|
786 |
case 0x00: { |
787 |
/* Physical format information */
|
788 |
uint64_t nb_sectors; |
789 |
if (layer != 0) { |
790 |
goto fail;
|
791 |
} |
792 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
793 |
|
794 |
outbuf[4] = 1; /* DVD-ROM, part version 1 */ |
795 |
outbuf[5] = 0xf; /* 120mm disc, minimum rate unspecified */ |
796 |
outbuf[6] = 1; /* one layer, read-only (per MMC-2 spec) */ |
797 |
outbuf[7] = 0; /* default densities */ |
798 |
|
799 |
stl_be_p(&outbuf[12], (nb_sectors >> 2) - 1); /* end sector */ |
800 |
stl_be_p(&outbuf[16], (nb_sectors >> 2) - 1); /* l0 end sector */ |
801 |
break;
|
802 |
} |
803 |
|
804 |
case 0x01: /* DVD copyright information, all zeros */ |
805 |
break;
|
806 |
|
807 |
case 0x03: /* BCA information - invalid field for no BCA info */ |
808 |
return -1; |
809 |
|
810 |
case 0x04: /* DVD disc manufacturing information, all zeros */ |
811 |
break;
|
812 |
|
813 |
case 0xff: { /* List capabilities */ |
814 |
int i;
|
815 |
size = 4;
|
816 |
for (i = 0; i < ARRAY_SIZE(rds_caps_size); i++) { |
817 |
if (!rds_caps_size[i]) {
|
818 |
continue;
|
819 |
} |
820 |
outbuf[size] = i; |
821 |
outbuf[size + 1] = 0x40; /* Not writable, readable */ |
822 |
stw_be_p(&outbuf[size + 2], rds_caps_size[i]);
|
823 |
size += 4;
|
824 |
} |
825 |
break;
|
826 |
} |
827 |
|
828 |
default:
|
829 |
return -1; |
830 |
} |
831 |
|
832 |
/* Size of buffer, not including 2 byte size field */
|
833 |
stw_be_p(outbuf, size - 2);
|
834 |
return size;
|
835 |
|
836 |
fail:
|
837 |
return -1; |
838 |
} |
839 |
|
840 |
static int scsi_event_status_media(SCSIDiskState *s, uint8_t *outbuf) |
841 |
{ |
842 |
uint8_t event_code, media_status; |
843 |
|
844 |
media_status = 0;
|
845 |
if (s->tray_open) {
|
846 |
media_status = MS_TRAY_OPEN; |
847 |
} else if (bdrv_is_inserted(s->qdev.conf.bs)) { |
848 |
media_status = MS_MEDIA_PRESENT; |
849 |
} |
850 |
|
851 |
/* Event notification descriptor */
|
852 |
event_code = MEC_NO_CHANGE; |
853 |
if (media_status != MS_TRAY_OPEN) {
|
854 |
if (s->media_event) {
|
855 |
event_code = MEC_NEW_MEDIA; |
856 |
s->media_event = false;
|
857 |
} else if (s->eject_request) { |
858 |
event_code = MEC_EJECT_REQUESTED; |
859 |
s->eject_request = false;
|
860 |
} |
861 |
} |
862 |
|
863 |
outbuf[0] = event_code;
|
864 |
outbuf[1] = media_status;
|
865 |
|
866 |
/* These fields are reserved, just clear them. */
|
867 |
outbuf[2] = 0; |
868 |
outbuf[3] = 0; |
869 |
return 4; |
870 |
} |
871 |
|
872 |
static int scsi_get_event_status_notification(SCSIDiskState *s, SCSIDiskReq *r, |
873 |
uint8_t *outbuf) |
874 |
{ |
875 |
int size;
|
876 |
uint8_t *buf = r->req.cmd.buf; |
877 |
uint8_t notification_class_request = buf[4];
|
878 |
if (s->qdev.type != TYPE_ROM) {
|
879 |
return -1; |
880 |
} |
881 |
if ((buf[1] & 1) == 0) { |
882 |
/* asynchronous */
|
883 |
return -1; |
884 |
} |
885 |
|
886 |
size = 4;
|
887 |
outbuf[0] = outbuf[1] = 0; |
888 |
outbuf[3] = 1 << GESN_MEDIA; /* supported events */ |
889 |
if (notification_class_request & (1 << GESN_MEDIA)) { |
890 |
outbuf[2] = GESN_MEDIA;
|
891 |
size += scsi_event_status_media(s, &outbuf[size]); |
892 |
} else {
|
893 |
outbuf[2] = 0x80; |
894 |
} |
895 |
stw_be_p(outbuf, size - 4);
|
896 |
return size;
|
897 |
} |
898 |
|
899 |
static int scsi_get_configuration(SCSIDiskState *s, uint8_t *outbuf) |
900 |
{ |
901 |
int current;
|
902 |
|
903 |
if (s->qdev.type != TYPE_ROM) {
|
904 |
return -1; |
905 |
} |
906 |
current = media_is_dvd(s) ? MMC_PROFILE_DVD_ROM : MMC_PROFILE_CD_ROM; |
907 |
memset(outbuf, 0, 40); |
908 |
stl_be_p(&outbuf[0], 36); /* Bytes after the data length field */ |
909 |
stw_be_p(&outbuf[6], current);
|
910 |
/* outbuf[8] - outbuf[19]: Feature 0 - Profile list */
|
911 |
outbuf[10] = 0x03; /* persistent, current */ |
912 |
outbuf[11] = 8; /* two profiles */ |
913 |
stw_be_p(&outbuf[12], MMC_PROFILE_DVD_ROM);
|
914 |
outbuf[14] = (current == MMC_PROFILE_DVD_ROM);
|
915 |
stw_be_p(&outbuf[16], MMC_PROFILE_CD_ROM);
|
916 |
outbuf[18] = (current == MMC_PROFILE_CD_ROM);
|
917 |
/* outbuf[20] - outbuf[31]: Feature 1 - Core feature */
|
918 |
stw_be_p(&outbuf[20], 1); |
919 |
outbuf[22] = 0x08 | 0x03; /* version 2, persistent, current */ |
920 |
outbuf[23] = 8; |
921 |
stl_be_p(&outbuf[24], 1); /* SCSI */ |
922 |
outbuf[28] = 1; /* DBE = 1, mandatory */ |
923 |
/* outbuf[32] - outbuf[39]: Feature 3 - Removable media feature */
|
924 |
stw_be_p(&outbuf[32], 3); |
925 |
outbuf[34] = 0x08 | 0x03; /* version 2, persistent, current */ |
926 |
outbuf[35] = 4; |
927 |
outbuf[36] = 0x39; /* tray, load=1, eject=1, unlocked at powerup, lock=1 */ |
928 |
/* TODO: Random readable, CD read, DVD read, drive serial number,
|
929 |
power management */
|
930 |
return 40; |
931 |
} |
932 |
|
933 |
static int scsi_emulate_mechanism_status(SCSIDiskState *s, uint8_t *outbuf) |
934 |
{ |
935 |
if (s->qdev.type != TYPE_ROM) {
|
936 |
return -1; |
937 |
} |
938 |
memset(outbuf, 0, 8); |
939 |
outbuf[5] = 1; /* CD-ROM */ |
940 |
return 8; |
941 |
} |
942 |
|
943 |
static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf, |
944 |
int page_control)
|
945 |
{ |
946 |
static const int mode_sense_valid[0x3f] = { |
947 |
[MODE_PAGE_HD_GEOMETRY] = (1 << TYPE_DISK),
|
948 |
[MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
|
949 |
[MODE_PAGE_CACHING] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
950 |
[MODE_PAGE_R_W_ERROR] = (1 << TYPE_DISK) | (1 << TYPE_ROM), |
951 |
[MODE_PAGE_AUDIO_CTL] = (1 << TYPE_ROM),
|
952 |
[MODE_PAGE_CAPABILITIES] = (1 << TYPE_ROM),
|
953 |
}; |
954 |
|
955 |
uint8_t *p = *p_outbuf + 2;
|
956 |
int length;
|
957 |
|
958 |
if ((mode_sense_valid[page] & (1 << s->qdev.type)) == 0) { |
959 |
return -1; |
960 |
} |
961 |
|
962 |
/*
|
963 |
* If Changeable Values are requested, a mask denoting those mode parameters
|
964 |
* that are changeable shall be returned. As we currently don't support
|
965 |
* parameter changes via MODE_SELECT all bits are returned set to zero.
|
966 |
* The buffer was already menset to zero by the caller of this function.
|
967 |
*
|
968 |
* The offsets here are off by two compared to the descriptions in the
|
969 |
* SCSI specs, because those include a 2-byte header. This is unfortunate,
|
970 |
* but it is done so that offsets are consistent within our implementation
|
971 |
* of MODE SENSE and MODE SELECT. MODE SELECT has to deal with both
|
972 |
* 2-byte and 4-byte headers.
|
973 |
*/
|
974 |
switch (page) {
|
975 |
case MODE_PAGE_HD_GEOMETRY:
|
976 |
length = 0x16;
|
977 |
if (page_control == 1) { /* Changeable Values */ |
978 |
break;
|
979 |
} |
980 |
/* if a geometry hint is available, use it */
|
981 |
p[0] = (s->qdev.conf.cyls >> 16) & 0xff; |
982 |
p[1] = (s->qdev.conf.cyls >> 8) & 0xff; |
983 |
p[2] = s->qdev.conf.cyls & 0xff; |
984 |
p[3] = s->qdev.conf.heads & 0xff; |
985 |
/* Write precomp start cylinder, disabled */
|
986 |
p[4] = (s->qdev.conf.cyls >> 16) & 0xff; |
987 |
p[5] = (s->qdev.conf.cyls >> 8) & 0xff; |
988 |
p[6] = s->qdev.conf.cyls & 0xff; |
989 |
/* Reduced current start cylinder, disabled */
|
990 |
p[7] = (s->qdev.conf.cyls >> 16) & 0xff; |
991 |
p[8] = (s->qdev.conf.cyls >> 8) & 0xff; |
992 |
p[9] = s->qdev.conf.cyls & 0xff; |
993 |
/* Device step rate [ns], 200ns */
|
994 |
p[10] = 0; |
995 |
p[11] = 200; |
996 |
/* Landing zone cylinder */
|
997 |
p[12] = 0xff; |
998 |
p[13] = 0xff; |
999 |
p[14] = 0xff; |
1000 |
/* Medium rotation rate [rpm], 5400 rpm */
|
1001 |
p[18] = (5400 >> 8) & 0xff; |
1002 |
p[19] = 5400 & 0xff; |
1003 |
break;
|
1004 |
|
1005 |
case MODE_PAGE_FLEXIBLE_DISK_GEOMETRY:
|
1006 |
length = 0x1e;
|
1007 |
if (page_control == 1) { /* Changeable Values */ |
1008 |
break;
|
1009 |
} |
1010 |
/* Transfer rate [kbit/s], 5Mbit/s */
|
1011 |
p[0] = 5000 >> 8; |
1012 |
p[1] = 5000 & 0xff; |
1013 |
/* if a geometry hint is available, use it */
|
1014 |
p[2] = s->qdev.conf.heads & 0xff; |
1015 |
p[3] = s->qdev.conf.secs & 0xff; |
1016 |
p[4] = s->qdev.blocksize >> 8; |
1017 |
p[6] = (s->qdev.conf.cyls >> 8) & 0xff; |
1018 |
p[7] = s->qdev.conf.cyls & 0xff; |
1019 |
/* Write precomp start cylinder, disabled */
|
1020 |
p[8] = (s->qdev.conf.cyls >> 8) & 0xff; |
1021 |
p[9] = s->qdev.conf.cyls & 0xff; |
1022 |
/* Reduced current start cylinder, disabled */
|
1023 |
p[10] = (s->qdev.conf.cyls >> 8) & 0xff; |
1024 |
p[11] = s->qdev.conf.cyls & 0xff; |
1025 |
/* Device step rate [100us], 100us */
|
1026 |
p[12] = 0; |
1027 |
p[13] = 1; |
1028 |
/* Device step pulse width [us], 1us */
|
1029 |
p[14] = 1; |
1030 |
/* Device head settle delay [100us], 100us */
|
1031 |
p[15] = 0; |
1032 |
p[16] = 1; |
1033 |
/* Motor on delay [0.1s], 0.1s */
|
1034 |
p[17] = 1; |
1035 |
/* Motor off delay [0.1s], 0.1s */
|
1036 |
p[18] = 1; |
1037 |
/* Medium rotation rate [rpm], 5400 rpm */
|
1038 |
p[26] = (5400 >> 8) & 0xff; |
1039 |
p[27] = 5400 & 0xff; |
1040 |
break;
|
1041 |
|
1042 |
case MODE_PAGE_CACHING:
|
1043 |
length = 0x12;
|
1044 |
if (page_control == 1 || /* Changeable Values */ |
1045 |
bdrv_enable_write_cache(s->qdev.conf.bs)) { |
1046 |
p[0] = 4; /* WCE */ |
1047 |
} |
1048 |
break;
|
1049 |
|
1050 |
case MODE_PAGE_R_W_ERROR:
|
1051 |
length = 10;
|
1052 |
if (page_control == 1) { /* Changeable Values */ |
1053 |
break;
|
1054 |
} |
1055 |
p[0] = 0x80; /* Automatic Write Reallocation Enabled */ |
1056 |
if (s->qdev.type == TYPE_ROM) {
|
1057 |
p[1] = 0x20; /* Read Retry Count */ |
1058 |
} |
1059 |
break;
|
1060 |
|
1061 |
case MODE_PAGE_AUDIO_CTL:
|
1062 |
length = 14;
|
1063 |
break;
|
1064 |
|
1065 |
case MODE_PAGE_CAPABILITIES:
|
1066 |
length = 0x14;
|
1067 |
if (page_control == 1) { /* Changeable Values */ |
1068 |
break;
|
1069 |
} |
1070 |
|
1071 |
p[0] = 0x3b; /* CD-R & CD-RW read */ |
1072 |
p[1] = 0; /* Writing not supported */ |
1073 |
p[2] = 0x7f; /* Audio, composite, digital out, |
1074 |
mode 2 form 1&2, multi session */
|
1075 |
p[3] = 0xff; /* CD DA, DA accurate, RW supported, |
1076 |
RW corrected, C2 errors, ISRC,
|
1077 |
UPC, Bar code */
|
1078 |
p[4] = 0x2d | (s->tray_locked ? 2 : 0); |
1079 |
/* Locking supported, jumper present, eject, tray */
|
1080 |
p[5] = 0; /* no volume & mute control, no |
1081 |
changer */
|
1082 |
p[6] = (50 * 176) >> 8; /* 50x read speed */ |
1083 |
p[7] = (50 * 176) & 0xff; |
1084 |
p[8] = 2 >> 8; /* Two volume levels */ |
1085 |
p[9] = 2 & 0xff; |
1086 |
p[10] = 2048 >> 8; /* 2M buffer */ |
1087 |
p[11] = 2048 & 0xff; |
1088 |
p[12] = (16 * 176) >> 8; /* 16x read speed current */ |
1089 |
p[13] = (16 * 176) & 0xff; |
1090 |
p[16] = (16 * 176) >> 8; /* 16x write speed */ |
1091 |
p[17] = (16 * 176) & 0xff; |
1092 |
p[18] = (16 * 176) >> 8; /* 16x write speed current */ |
1093 |
p[19] = (16 * 176) & 0xff; |
1094 |
break;
|
1095 |
|
1096 |
default:
|
1097 |
return -1; |
1098 |
} |
1099 |
|
1100 |
assert(length < 256);
|
1101 |
(*p_outbuf)[0] = page;
|
1102 |
(*p_outbuf)[1] = length;
|
1103 |
*p_outbuf += length + 2;
|
1104 |
return length + 2; |
1105 |
} |
1106 |
|
1107 |
static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf) |
1108 |
{ |
1109 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
1110 |
uint64_t nb_sectors; |
1111 |
bool dbd;
|
1112 |
int page, buflen, ret, page_control;
|
1113 |
uint8_t *p; |
1114 |
uint8_t dev_specific_param; |
1115 |
|
1116 |
dbd = (r->req.cmd.buf[1] & 0x8) != 0; |
1117 |
page = r->req.cmd.buf[2] & 0x3f; |
1118 |
page_control = (r->req.cmd.buf[2] & 0xc0) >> 6; |
1119 |
DPRINTF("Mode Sense(%d) (page %d, xfer %zd, page_control %d)\n",
|
1120 |
(r->req.cmd.buf[0] == MODE_SENSE) ? 6 : 10, page, r->req.cmd.xfer, page_control); |
1121 |
memset(outbuf, 0, r->req.cmd.xfer);
|
1122 |
p = outbuf; |
1123 |
|
1124 |
if (s->qdev.type == TYPE_DISK) {
|
1125 |
dev_specific_param = s->features & (1 << SCSI_DISK_F_DPOFUA) ? 0x10 : 0; |
1126 |
if (bdrv_is_read_only(s->qdev.conf.bs)) {
|
1127 |
dev_specific_param |= 0x80; /* Readonly. */ |
1128 |
} |
1129 |
} else {
|
1130 |
/* MMC prescribes that CD/DVD drives have no block descriptors,
|
1131 |
* and defines no device-specific parameter. */
|
1132 |
dev_specific_param = 0x00;
|
1133 |
dbd = true;
|
1134 |
} |
1135 |
|
1136 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1137 |
p[1] = 0; /* Default media type. */ |
1138 |
p[2] = dev_specific_param;
|
1139 |
p[3] = 0; /* Block descriptor length. */ |
1140 |
p += 4;
|
1141 |
} else { /* MODE_SENSE_10 */ |
1142 |
p[2] = 0; /* Default media type. */ |
1143 |
p[3] = dev_specific_param;
|
1144 |
p[6] = p[7] = 0; /* Block descriptor length. */ |
1145 |
p += 8;
|
1146 |
} |
1147 |
|
1148 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1149 |
if (!dbd && nb_sectors) {
|
1150 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1151 |
outbuf[3] = 8; /* Block descriptor length */ |
1152 |
} else { /* MODE_SENSE_10 */ |
1153 |
outbuf[7] = 8; /* Block descriptor length */ |
1154 |
} |
1155 |
nb_sectors /= (s->qdev.blocksize / 512);
|
1156 |
if (nb_sectors > 0xffffff) { |
1157 |
nb_sectors = 0;
|
1158 |
} |
1159 |
p[0] = 0; /* media density code */ |
1160 |
p[1] = (nb_sectors >> 16) & 0xff; |
1161 |
p[2] = (nb_sectors >> 8) & 0xff; |
1162 |
p[3] = nb_sectors & 0xff; |
1163 |
p[4] = 0; /* reserved */ |
1164 |
p[5] = 0; /* bytes 5-7 are the sector size in bytes */ |
1165 |
p[6] = s->qdev.blocksize >> 8; |
1166 |
p[7] = 0; |
1167 |
p += 8;
|
1168 |
} |
1169 |
|
1170 |
if (page_control == 3) { |
1171 |
/* Saved Values */
|
1172 |
scsi_check_condition(r, SENSE_CODE(SAVING_PARAMS_NOT_SUPPORTED)); |
1173 |
return -1; |
1174 |
} |
1175 |
|
1176 |
if (page == 0x3f) { |
1177 |
for (page = 0; page <= 0x3e; page++) { |
1178 |
mode_sense_page(s, page, &p, page_control); |
1179 |
} |
1180 |
} else {
|
1181 |
ret = mode_sense_page(s, page, &p, page_control); |
1182 |
if (ret == -1) { |
1183 |
return -1; |
1184 |
} |
1185 |
} |
1186 |
|
1187 |
buflen = p - outbuf; |
1188 |
/*
|
1189 |
* The mode data length field specifies the length in bytes of the
|
1190 |
* following data that is available to be transferred. The mode data
|
1191 |
* length does not include itself.
|
1192 |
*/
|
1193 |
if (r->req.cmd.buf[0] == MODE_SENSE) { |
1194 |
outbuf[0] = buflen - 1; |
1195 |
} else { /* MODE_SENSE_10 */ |
1196 |
outbuf[0] = ((buflen - 2) >> 8) & 0xff; |
1197 |
outbuf[1] = (buflen - 2) & 0xff; |
1198 |
} |
1199 |
return buflen;
|
1200 |
} |
1201 |
|
1202 |
static int scsi_disk_emulate_read_toc(SCSIRequest *req, uint8_t *outbuf) |
1203 |
{ |
1204 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1205 |
int start_track, format, msf, toclen;
|
1206 |
uint64_t nb_sectors; |
1207 |
|
1208 |
msf = req->cmd.buf[1] & 2; |
1209 |
format = req->cmd.buf[2] & 0xf; |
1210 |
start_track = req->cmd.buf[6];
|
1211 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1212 |
DPRINTF("Read TOC (track %d format %d msf %d)\n", start_track, format, msf >> 1); |
1213 |
nb_sectors /= s->qdev.blocksize / 512;
|
1214 |
switch (format) {
|
1215 |
case 0: |
1216 |
toclen = cdrom_read_toc(nb_sectors, outbuf, msf, start_track); |
1217 |
break;
|
1218 |
case 1: |
1219 |
/* multi session : only a single session defined */
|
1220 |
toclen = 12;
|
1221 |
memset(outbuf, 0, 12); |
1222 |
outbuf[1] = 0x0a; |
1223 |
outbuf[2] = 0x01; |
1224 |
outbuf[3] = 0x01; |
1225 |
break;
|
1226 |
case 2: |
1227 |
toclen = cdrom_read_toc_raw(nb_sectors, outbuf, msf, start_track); |
1228 |
break;
|
1229 |
default:
|
1230 |
return -1; |
1231 |
} |
1232 |
return toclen;
|
1233 |
} |
1234 |
|
1235 |
static int scsi_disk_emulate_start_stop(SCSIDiskReq *r) |
1236 |
{ |
1237 |
SCSIRequest *req = &r->req; |
1238 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1239 |
bool start = req->cmd.buf[4] & 1; |
1240 |
bool loej = req->cmd.buf[4] & 2; /* load on start, eject on !start */ |
1241 |
int pwrcnd = req->cmd.buf[4] & 0xf0; |
1242 |
|
1243 |
if (pwrcnd) {
|
1244 |
/* eject/load only happens for power condition == 0 */
|
1245 |
return 0; |
1246 |
} |
1247 |
|
1248 |
if ((s->features & (1 << SCSI_DISK_F_REMOVABLE)) && loej) { |
1249 |
if (!start && !s->tray_open && s->tray_locked) {
|
1250 |
scsi_check_condition(r, |
1251 |
bdrv_is_inserted(s->qdev.conf.bs) |
1252 |
? SENSE_CODE(ILLEGAL_REQ_REMOVAL_PREVENTED) |
1253 |
: SENSE_CODE(NOT_READY_REMOVAL_PREVENTED)); |
1254 |
return -1; |
1255 |
} |
1256 |
|
1257 |
if (s->tray_open != !start) {
|
1258 |
bdrv_eject(s->qdev.conf.bs, !start); |
1259 |
s->tray_open = !start; |
1260 |
} |
1261 |
} |
1262 |
return 0; |
1263 |
} |
1264 |
|
1265 |
static void scsi_disk_emulate_read_data(SCSIRequest *req) |
1266 |
{ |
1267 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1268 |
int buflen = r->iov.iov_len;
|
1269 |
|
1270 |
if (buflen) {
|
1271 |
DPRINTF("Read buf_len=%d\n", buflen);
|
1272 |
r->iov.iov_len = 0;
|
1273 |
r->started = true;
|
1274 |
scsi_req_data(&r->req, buflen); |
1275 |
return;
|
1276 |
} |
1277 |
|
1278 |
/* This also clears the sense buffer for REQUEST SENSE. */
|
1279 |
scsi_req_complete(&r->req, GOOD); |
1280 |
} |
1281 |
|
1282 |
static int scsi_disk_check_mode_select(SCSIDiskState *s, int page, |
1283 |
uint8_t *inbuf, int inlen)
|
1284 |
{ |
1285 |
uint8_t mode_current[SCSI_MAX_MODE_LEN]; |
1286 |
uint8_t mode_changeable[SCSI_MAX_MODE_LEN]; |
1287 |
uint8_t *p; |
1288 |
int len, expected_len, changeable_len, i;
|
1289 |
|
1290 |
/* The input buffer does not include the page header, so it is
|
1291 |
* off by 2 bytes.
|
1292 |
*/
|
1293 |
expected_len = inlen + 2;
|
1294 |
if (expected_len > SCSI_MAX_MODE_LEN) {
|
1295 |
return -1; |
1296 |
} |
1297 |
|
1298 |
p = mode_current; |
1299 |
memset(mode_current, 0, inlen + 2); |
1300 |
len = mode_sense_page(s, page, &p, 0);
|
1301 |
if (len < 0 || len != expected_len) { |
1302 |
return -1; |
1303 |
} |
1304 |
|
1305 |
p = mode_changeable; |
1306 |
memset(mode_changeable, 0, inlen + 2); |
1307 |
changeable_len = mode_sense_page(s, page, &p, 1);
|
1308 |
assert(changeable_len == len); |
1309 |
|
1310 |
/* Check that unchangeable bits are the same as what MODE SENSE
|
1311 |
* would return.
|
1312 |
*/
|
1313 |
for (i = 2; i < len; i++) { |
1314 |
if (((mode_current[i] ^ inbuf[i - 2]) & ~mode_changeable[i]) != 0) { |
1315 |
return -1; |
1316 |
} |
1317 |
} |
1318 |
return 0; |
1319 |
} |
1320 |
|
1321 |
static void scsi_disk_apply_mode_select(SCSIDiskState *s, int page, uint8_t *p) |
1322 |
{ |
1323 |
switch (page) {
|
1324 |
case MODE_PAGE_CACHING:
|
1325 |
bdrv_set_enable_write_cache(s->qdev.conf.bs, (p[0] & 4) != 0); |
1326 |
break;
|
1327 |
|
1328 |
default:
|
1329 |
break;
|
1330 |
} |
1331 |
} |
1332 |
|
1333 |
static int mode_select_pages(SCSIDiskReq *r, uint8_t *p, int len, bool change) |
1334 |
{ |
1335 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
1336 |
|
1337 |
while (len > 0) { |
1338 |
int page, subpage, page_len;
|
1339 |
|
1340 |
/* Parse both possible formats for the mode page headers. */
|
1341 |
page = p[0] & 0x3f; |
1342 |
if (p[0] & 0x40) { |
1343 |
if (len < 4) { |
1344 |
goto invalid_param_len;
|
1345 |
} |
1346 |
subpage = p[1];
|
1347 |
page_len = lduw_be_p(&p[2]);
|
1348 |
p += 4;
|
1349 |
len -= 4;
|
1350 |
} else {
|
1351 |
if (len < 2) { |
1352 |
goto invalid_param_len;
|
1353 |
} |
1354 |
subpage = 0;
|
1355 |
page_len = p[1];
|
1356 |
p += 2;
|
1357 |
len -= 2;
|
1358 |
} |
1359 |
|
1360 |
if (subpage) {
|
1361 |
goto invalid_param;
|
1362 |
} |
1363 |
if (page_len > len) {
|
1364 |
goto invalid_param_len;
|
1365 |
} |
1366 |
|
1367 |
if (!change) {
|
1368 |
if (scsi_disk_check_mode_select(s, page, p, page_len) < 0) { |
1369 |
goto invalid_param;
|
1370 |
} |
1371 |
} else {
|
1372 |
scsi_disk_apply_mode_select(s, page, p); |
1373 |
} |
1374 |
|
1375 |
p += page_len; |
1376 |
len -= page_len; |
1377 |
} |
1378 |
return 0; |
1379 |
|
1380 |
invalid_param:
|
1381 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM)); |
1382 |
return -1; |
1383 |
|
1384 |
invalid_param_len:
|
1385 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); |
1386 |
return -1; |
1387 |
} |
1388 |
|
1389 |
static void scsi_disk_emulate_mode_select(SCSIDiskReq *r, uint8_t *inbuf) |
1390 |
{ |
1391 |
uint8_t *p = inbuf; |
1392 |
int cmd = r->req.cmd.buf[0]; |
1393 |
int len = r->req.cmd.xfer;
|
1394 |
int hdr_len = (cmd == MODE_SELECT ? 4 : 8); |
1395 |
int bd_len;
|
1396 |
int pass;
|
1397 |
|
1398 |
/* We only support PF=1, SP=0. */
|
1399 |
if ((r->req.cmd.buf[1] & 0x11) != 0x10) { |
1400 |
goto invalid_field;
|
1401 |
} |
1402 |
|
1403 |
if (len < hdr_len) {
|
1404 |
goto invalid_param_len;
|
1405 |
} |
1406 |
|
1407 |
bd_len = (cmd == MODE_SELECT ? p[3] : lduw_be_p(&p[6])); |
1408 |
len -= hdr_len; |
1409 |
p += hdr_len; |
1410 |
if (len < bd_len) {
|
1411 |
goto invalid_param_len;
|
1412 |
} |
1413 |
if (bd_len != 0 && bd_len != 8) { |
1414 |
goto invalid_param;
|
1415 |
} |
1416 |
|
1417 |
len -= bd_len; |
1418 |
p += bd_len; |
1419 |
|
1420 |
/* Ensure no change is made if there is an error! */
|
1421 |
for (pass = 0; pass < 2; pass++) { |
1422 |
if (mode_select_pages(r, p, len, pass == 1) < 0) { |
1423 |
assert(pass == 0);
|
1424 |
return;
|
1425 |
} |
1426 |
} |
1427 |
scsi_req_complete(&r->req, GOOD); |
1428 |
return;
|
1429 |
|
1430 |
invalid_param:
|
1431 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM)); |
1432 |
return;
|
1433 |
|
1434 |
invalid_param_len:
|
1435 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); |
1436 |
return;
|
1437 |
|
1438 |
invalid_field:
|
1439 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1440 |
} |
1441 |
|
1442 |
static inline bool check_lba_range(SCSIDiskState *s, |
1443 |
uint64_t sector_num, uint32_t nb_sectors) |
1444 |
{ |
1445 |
/*
|
1446 |
* The first line tests that no overflow happens when computing the last
|
1447 |
* sector. The second line tests that the last accessed sector is in
|
1448 |
* range.
|
1449 |
*
|
1450 |
* Careful, the computations should not underflow for nb_sectors == 0,
|
1451 |
* and a 0-block read to the first LBA beyond the end of device is
|
1452 |
* valid.
|
1453 |
*/
|
1454 |
return (sector_num <= sector_num + nb_sectors &&
|
1455 |
sector_num + nb_sectors <= s->qdev.max_lba + 1);
|
1456 |
} |
1457 |
|
1458 |
typedef struct UnmapCBData { |
1459 |
SCSIDiskReq *r; |
1460 |
uint8_t *inbuf; |
1461 |
int count;
|
1462 |
} UnmapCBData; |
1463 |
|
1464 |
static void scsi_unmap_complete(void *opaque, int ret) |
1465 |
{ |
1466 |
UnmapCBData *data = opaque; |
1467 |
SCSIDiskReq *r = data->r; |
1468 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); |
1469 |
uint64_t sector_num; |
1470 |
uint32_t nb_sectors; |
1471 |
|
1472 |
r->req.aiocb = NULL;
|
1473 |
if (ret < 0) { |
1474 |
if (scsi_handle_rw_error(r, -ret)) {
|
1475 |
goto done;
|
1476 |
} |
1477 |
} |
1478 |
|
1479 |
if (data->count > 0 && !r->req.io_canceled) { |
1480 |
sector_num = ldq_be_p(&data->inbuf[0]);
|
1481 |
nb_sectors = ldl_be_p(&data->inbuf[8]) & 0xffffffffULL; |
1482 |
if (!check_lba_range(s, sector_num, nb_sectors)) {
|
1483 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1484 |
goto done;
|
1485 |
} |
1486 |
|
1487 |
r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs, |
1488 |
sector_num * (s->qdev.blocksize / 512),
|
1489 |
nb_sectors * (s->qdev.blocksize / 512),
|
1490 |
scsi_unmap_complete, data); |
1491 |
data->count--; |
1492 |
data->inbuf += 16;
|
1493 |
return;
|
1494 |
} |
1495 |
|
1496 |
done:
|
1497 |
if (data->count == 0) { |
1498 |
scsi_req_complete(&r->req, GOOD); |
1499 |
} |
1500 |
if (!r->req.io_canceled) {
|
1501 |
scsi_req_unref(&r->req); |
1502 |
} |
1503 |
g_free(data); |
1504 |
} |
1505 |
|
1506 |
static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf) |
1507 |
{ |
1508 |
uint8_t *p = inbuf; |
1509 |
int len = r->req.cmd.xfer;
|
1510 |
UnmapCBData *data; |
1511 |
|
1512 |
if (len < 8) { |
1513 |
goto invalid_param_len;
|
1514 |
} |
1515 |
if (len < lduw_be_p(&p[0]) + 2) { |
1516 |
goto invalid_param_len;
|
1517 |
} |
1518 |
if (len < lduw_be_p(&p[2]) + 8) { |
1519 |
goto invalid_param_len;
|
1520 |
} |
1521 |
if (lduw_be_p(&p[2]) & 15) { |
1522 |
goto invalid_param_len;
|
1523 |
} |
1524 |
|
1525 |
data = g_new0(UnmapCBData, 1);
|
1526 |
data->r = r; |
1527 |
data->inbuf = &p[8];
|
1528 |
data->count = lduw_be_p(&p[2]) >> 4; |
1529 |
|
1530 |
/* The matching unref is in scsi_unmap_complete, before data is freed. */
|
1531 |
scsi_req_ref(&r->req); |
1532 |
scsi_unmap_complete(data, 0);
|
1533 |
return;
|
1534 |
|
1535 |
invalid_param_len:
|
1536 |
scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); |
1537 |
} |
1538 |
|
1539 |
static void scsi_disk_emulate_write_data(SCSIRequest *req) |
1540 |
{ |
1541 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1542 |
|
1543 |
if (r->iov.iov_len) {
|
1544 |
int buflen = r->iov.iov_len;
|
1545 |
DPRINTF("Write buf_len=%d\n", buflen);
|
1546 |
r->iov.iov_len = 0;
|
1547 |
scsi_req_data(&r->req, buflen); |
1548 |
return;
|
1549 |
} |
1550 |
|
1551 |
switch (req->cmd.buf[0]) { |
1552 |
case MODE_SELECT:
|
1553 |
case MODE_SELECT_10:
|
1554 |
/* This also clears the sense buffer for REQUEST SENSE. */
|
1555 |
scsi_disk_emulate_mode_select(r, r->iov.iov_base); |
1556 |
break;
|
1557 |
|
1558 |
case UNMAP:
|
1559 |
scsi_disk_emulate_unmap(r, r->iov.iov_base); |
1560 |
break;
|
1561 |
|
1562 |
default:
|
1563 |
abort(); |
1564 |
} |
1565 |
} |
1566 |
|
1567 |
static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf)
|
1568 |
{ |
1569 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1570 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1571 |
uint64_t nb_sectors; |
1572 |
uint8_t *outbuf; |
1573 |
int buflen;
|
1574 |
|
1575 |
switch (req->cmd.buf[0]) { |
1576 |
case INQUIRY:
|
1577 |
case MODE_SENSE:
|
1578 |
case MODE_SENSE_10:
|
1579 |
case RESERVE:
|
1580 |
case RESERVE_10:
|
1581 |
case RELEASE:
|
1582 |
case RELEASE_10:
|
1583 |
case START_STOP:
|
1584 |
case ALLOW_MEDIUM_REMOVAL:
|
1585 |
case GET_CONFIGURATION:
|
1586 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1587 |
case MECHANISM_STATUS:
|
1588 |
case REQUEST_SENSE:
|
1589 |
break;
|
1590 |
|
1591 |
default:
|
1592 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1593 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
1594 |
return 0; |
1595 |
} |
1596 |
break;
|
1597 |
} |
1598 |
|
1599 |
if (!r->iov.iov_base) {
|
1600 |
/*
|
1601 |
* FIXME: we shouldn't return anything bigger than 4k, but the code
|
1602 |
* requires the buffer to be as big as req->cmd.xfer in several
|
1603 |
* places. So, do not allow CDBs with a very large ALLOCATION
|
1604 |
* LENGTH. The real fix would be to modify scsi_read_data and
|
1605 |
* dma_buf_read, so that they return data beyond the buflen
|
1606 |
* as all zeros.
|
1607 |
*/
|
1608 |
if (req->cmd.xfer > 65536) { |
1609 |
goto illegal_request;
|
1610 |
} |
1611 |
r->buflen = MAX(4096, req->cmd.xfer);
|
1612 |
r->iov.iov_base = qemu_blockalign(s->qdev.conf.bs, r->buflen); |
1613 |
} |
1614 |
|
1615 |
buflen = req->cmd.xfer; |
1616 |
outbuf = r->iov.iov_base; |
1617 |
switch (req->cmd.buf[0]) { |
1618 |
case TEST_UNIT_READY:
|
1619 |
assert(!s->tray_open && bdrv_is_inserted(s->qdev.conf.bs)); |
1620 |
break;
|
1621 |
case INQUIRY:
|
1622 |
buflen = scsi_disk_emulate_inquiry(req, outbuf); |
1623 |
if (buflen < 0) { |
1624 |
goto illegal_request;
|
1625 |
} |
1626 |
break;
|
1627 |
case MODE_SENSE:
|
1628 |
case MODE_SENSE_10:
|
1629 |
buflen = scsi_disk_emulate_mode_sense(r, outbuf); |
1630 |
if (buflen < 0) { |
1631 |
goto illegal_request;
|
1632 |
} |
1633 |
break;
|
1634 |
case READ_TOC:
|
1635 |
buflen = scsi_disk_emulate_read_toc(req, outbuf); |
1636 |
if (buflen < 0) { |
1637 |
goto illegal_request;
|
1638 |
} |
1639 |
break;
|
1640 |
case RESERVE:
|
1641 |
if (req->cmd.buf[1] & 1) { |
1642 |
goto illegal_request;
|
1643 |
} |
1644 |
break;
|
1645 |
case RESERVE_10:
|
1646 |
if (req->cmd.buf[1] & 3) { |
1647 |
goto illegal_request;
|
1648 |
} |
1649 |
break;
|
1650 |
case RELEASE:
|
1651 |
if (req->cmd.buf[1] & 1) { |
1652 |
goto illegal_request;
|
1653 |
} |
1654 |
break;
|
1655 |
case RELEASE_10:
|
1656 |
if (req->cmd.buf[1] & 3) { |
1657 |
goto illegal_request;
|
1658 |
} |
1659 |
break;
|
1660 |
case START_STOP:
|
1661 |
if (scsi_disk_emulate_start_stop(r) < 0) { |
1662 |
return 0; |
1663 |
} |
1664 |
break;
|
1665 |
case ALLOW_MEDIUM_REMOVAL:
|
1666 |
s->tray_locked = req->cmd.buf[4] & 1; |
1667 |
bdrv_lock_medium(s->qdev.conf.bs, req->cmd.buf[4] & 1); |
1668 |
break;
|
1669 |
case READ_CAPACITY_10:
|
1670 |
/* The normal LEN field for this command is zero. */
|
1671 |
memset(outbuf, 0, 8); |
1672 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1673 |
if (!nb_sectors) {
|
1674 |
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); |
1675 |
return -1; |
1676 |
} |
1677 |
if ((req->cmd.buf[8] & 1) == 0 && req->cmd.lba) { |
1678 |
goto illegal_request;
|
1679 |
} |
1680 |
nb_sectors /= s->qdev.blocksize / 512;
|
1681 |
/* Returned value is the address of the last sector. */
|
1682 |
nb_sectors--; |
1683 |
/* Remember the new size for read/write sanity checking. */
|
1684 |
s->qdev.max_lba = nb_sectors; |
1685 |
/* Clip to 2TB, instead of returning capacity modulo 2TB. */
|
1686 |
if (nb_sectors > UINT32_MAX) {
|
1687 |
nb_sectors = UINT32_MAX; |
1688 |
} |
1689 |
outbuf[0] = (nb_sectors >> 24) & 0xff; |
1690 |
outbuf[1] = (nb_sectors >> 16) & 0xff; |
1691 |
outbuf[2] = (nb_sectors >> 8) & 0xff; |
1692 |
outbuf[3] = nb_sectors & 0xff; |
1693 |
outbuf[4] = 0; |
1694 |
outbuf[5] = 0; |
1695 |
outbuf[6] = s->qdev.blocksize >> 8; |
1696 |
outbuf[7] = 0; |
1697 |
buflen = 8;
|
1698 |
break;
|
1699 |
case REQUEST_SENSE:
|
1700 |
/* Just return "NO SENSE". */
|
1701 |
buflen = scsi_build_sense(NULL, 0, outbuf, r->buflen, |
1702 |
(req->cmd.buf[1] & 1) == 0); |
1703 |
break;
|
1704 |
case MECHANISM_STATUS:
|
1705 |
buflen = scsi_emulate_mechanism_status(s, outbuf); |
1706 |
if (buflen < 0) { |
1707 |
goto illegal_request;
|
1708 |
} |
1709 |
break;
|
1710 |
case GET_CONFIGURATION:
|
1711 |
buflen = scsi_get_configuration(s, outbuf); |
1712 |
if (buflen < 0) { |
1713 |
goto illegal_request;
|
1714 |
} |
1715 |
break;
|
1716 |
case GET_EVENT_STATUS_NOTIFICATION:
|
1717 |
buflen = scsi_get_event_status_notification(s, r, outbuf); |
1718 |
if (buflen < 0) { |
1719 |
goto illegal_request;
|
1720 |
} |
1721 |
break;
|
1722 |
case READ_DISC_INFORMATION:
|
1723 |
buflen = scsi_read_disc_information(s, r, outbuf); |
1724 |
if (buflen < 0) { |
1725 |
goto illegal_request;
|
1726 |
} |
1727 |
break;
|
1728 |
case READ_DVD_STRUCTURE:
|
1729 |
buflen = scsi_read_dvd_structure(s, r, outbuf); |
1730 |
if (buflen < 0) { |
1731 |
goto illegal_request;
|
1732 |
} |
1733 |
break;
|
1734 |
case SERVICE_ACTION_IN_16:
|
1735 |
/* Service Action In subcommands. */
|
1736 |
if ((req->cmd.buf[1] & 31) == SAI_READ_CAPACITY_16) { |
1737 |
DPRINTF("SAI READ CAPACITY(16)\n");
|
1738 |
memset(outbuf, 0, req->cmd.xfer);
|
1739 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1740 |
if (!nb_sectors) {
|
1741 |
scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY)); |
1742 |
return -1; |
1743 |
} |
1744 |
if ((req->cmd.buf[14] & 1) == 0 && req->cmd.lba) { |
1745 |
goto illegal_request;
|
1746 |
} |
1747 |
nb_sectors /= s->qdev.blocksize / 512;
|
1748 |
/* Returned value is the address of the last sector. */
|
1749 |
nb_sectors--; |
1750 |
/* Remember the new size for read/write sanity checking. */
|
1751 |
s->qdev.max_lba = nb_sectors; |
1752 |
outbuf[0] = (nb_sectors >> 56) & 0xff; |
1753 |
outbuf[1] = (nb_sectors >> 48) & 0xff; |
1754 |
outbuf[2] = (nb_sectors >> 40) & 0xff; |
1755 |
outbuf[3] = (nb_sectors >> 32) & 0xff; |
1756 |
outbuf[4] = (nb_sectors >> 24) & 0xff; |
1757 |
outbuf[5] = (nb_sectors >> 16) & 0xff; |
1758 |
outbuf[6] = (nb_sectors >> 8) & 0xff; |
1759 |
outbuf[7] = nb_sectors & 0xff; |
1760 |
outbuf[8] = 0; |
1761 |
outbuf[9] = 0; |
1762 |
outbuf[10] = s->qdev.blocksize >> 8; |
1763 |
outbuf[11] = 0; |
1764 |
outbuf[12] = 0; |
1765 |
outbuf[13] = get_physical_block_exp(&s->qdev.conf);
|
1766 |
|
1767 |
/* set TPE bit if the format supports discard */
|
1768 |
if (s->qdev.conf.discard_granularity) {
|
1769 |
outbuf[14] = 0x80; |
1770 |
} |
1771 |
|
1772 |
/* Protection, exponent and lowest lba field left blank. */
|
1773 |
buflen = req->cmd.xfer; |
1774 |
break;
|
1775 |
} |
1776 |
DPRINTF("Unsupported Service Action In\n");
|
1777 |
goto illegal_request;
|
1778 |
case SYNCHRONIZE_CACHE:
|
1779 |
/* The request is used as the AIO opaque value, so add a ref. */
|
1780 |
scsi_req_ref(&r->req); |
1781 |
bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH);
|
1782 |
r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r); |
1783 |
return 0; |
1784 |
case SEEK_10:
|
1785 |
DPRINTF("Seek(10) (sector %" PRId64 ")\n", r->req.cmd.lba); |
1786 |
if (r->req.cmd.lba > s->qdev.max_lba) {
|
1787 |
goto illegal_lba;
|
1788 |
} |
1789 |
break;
|
1790 |
case MODE_SELECT:
|
1791 |
DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer); |
1792 |
break;
|
1793 |
case MODE_SELECT_10:
|
1794 |
DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer); |
1795 |
break;
|
1796 |
case UNMAP:
|
1797 |
DPRINTF("Unmap (len %lu)\n", (long)r->req.cmd.xfer); |
1798 |
break;
|
1799 |
case WRITE_SAME_10:
|
1800 |
case WRITE_SAME_16:
|
1801 |
nb_sectors = scsi_data_cdb_length(r->req.cmd.buf); |
1802 |
if (bdrv_is_read_only(s->qdev.conf.bs)) {
|
1803 |
scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED)); |
1804 |
return 0; |
1805 |
} |
1806 |
if (!check_lba_range(s, r->req.cmd.lba, nb_sectors)) {
|
1807 |
goto illegal_lba;
|
1808 |
} |
1809 |
|
1810 |
/*
|
1811 |
* We only support WRITE SAME with the unmap bit set for now.
|
1812 |
*/
|
1813 |
if (!(req->cmd.buf[1] & 0x8)) { |
1814 |
goto illegal_request;
|
1815 |
} |
1816 |
|
1817 |
/* The request is used as the AIO opaque value, so add a ref. */
|
1818 |
scsi_req_ref(&r->req); |
1819 |
r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs, |
1820 |
r->req.cmd.lba * (s->qdev.blocksize / 512),
|
1821 |
nb_sectors * (s->qdev.blocksize / 512),
|
1822 |
scsi_aio_complete, r); |
1823 |
return 0; |
1824 |
default:
|
1825 |
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); |
1826 |
scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE)); |
1827 |
return 0; |
1828 |
} |
1829 |
assert(!r->req.aiocb); |
1830 |
r->iov.iov_len = MIN(buflen, req->cmd.xfer); |
1831 |
if (r->iov.iov_len == 0) { |
1832 |
scsi_req_complete(&r->req, GOOD); |
1833 |
} |
1834 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
1835 |
assert(r->iov.iov_len == req->cmd.xfer); |
1836 |
return -r->iov.iov_len;
|
1837 |
} else {
|
1838 |
return r->iov.iov_len;
|
1839 |
} |
1840 |
|
1841 |
illegal_request:
|
1842 |
if (r->req.status == -1) { |
1843 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1844 |
} |
1845 |
return 0; |
1846 |
|
1847 |
illegal_lba:
|
1848 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1849 |
return 0; |
1850 |
} |
1851 |
|
1852 |
/* Execute a scsi command. Returns the length of the data expected by the
|
1853 |
command. This will be Positive for data transfers from the device
|
1854 |
(eg. disk reads), negative for transfers to the device (eg. disk writes),
|
1855 |
and zero if the command does not transfer any data. */
|
1856 |
|
1857 |
static int32_t scsi_disk_dma_command(SCSIRequest *req, uint8_t *buf)
|
1858 |
{ |
1859 |
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); |
1860 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev); |
1861 |
uint32_t len; |
1862 |
uint8_t command; |
1863 |
|
1864 |
command = buf[0];
|
1865 |
|
1866 |
if (s->tray_open || !bdrv_is_inserted(s->qdev.conf.bs)) {
|
1867 |
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM)); |
1868 |
return 0; |
1869 |
} |
1870 |
|
1871 |
len = scsi_data_cdb_length(r->req.cmd.buf); |
1872 |
switch (command) {
|
1873 |
case READ_6:
|
1874 |
case READ_10:
|
1875 |
case READ_12:
|
1876 |
case READ_16:
|
1877 |
DPRINTF("Read (sector %" PRId64 ", count %u)\n", r->req.cmd.lba, len); |
1878 |
if (r->req.cmd.buf[1] & 0xe0) { |
1879 |
goto illegal_request;
|
1880 |
} |
1881 |
if (!check_lba_range(s, r->req.cmd.lba, len)) {
|
1882 |
goto illegal_lba;
|
1883 |
} |
1884 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1885 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1886 |
break;
|
1887 |
case WRITE_6:
|
1888 |
case WRITE_10:
|
1889 |
case WRITE_12:
|
1890 |
case WRITE_16:
|
1891 |
case WRITE_VERIFY_10:
|
1892 |
case WRITE_VERIFY_12:
|
1893 |
case WRITE_VERIFY_16:
|
1894 |
if (bdrv_is_read_only(s->qdev.conf.bs)) {
|
1895 |
scsi_check_condition(r, SENSE_CODE(WRITE_PROTECTED)); |
1896 |
return 0; |
1897 |
} |
1898 |
/* fallthrough */
|
1899 |
case VERIFY_10:
|
1900 |
case VERIFY_12:
|
1901 |
case VERIFY_16:
|
1902 |
DPRINTF("Write %s(sector %" PRId64 ", count %u)\n", |
1903 |
(command & 0xe) == 0xe ? "And Verify " : "", |
1904 |
r->req.cmd.lba, len); |
1905 |
if (r->req.cmd.buf[1] & 0xe0) { |
1906 |
goto illegal_request;
|
1907 |
} |
1908 |
if (!check_lba_range(s, r->req.cmd.lba, len)) {
|
1909 |
goto illegal_lba;
|
1910 |
} |
1911 |
r->sector = r->req.cmd.lba * (s->qdev.blocksize / 512);
|
1912 |
r->sector_count = len * (s->qdev.blocksize / 512);
|
1913 |
break;
|
1914 |
default:
|
1915 |
abort(); |
1916 |
illegal_request:
|
1917 |
scsi_check_condition(r, SENSE_CODE(INVALID_FIELD)); |
1918 |
return 0; |
1919 |
illegal_lba:
|
1920 |
scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); |
1921 |
return 0; |
1922 |
} |
1923 |
if (r->sector_count == 0) { |
1924 |
scsi_req_complete(&r->req, GOOD); |
1925 |
} |
1926 |
assert(r->iov.iov_len == 0);
|
1927 |
if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
|
1928 |
return -r->sector_count * 512; |
1929 |
} else {
|
1930 |
return r->sector_count * 512; |
1931 |
} |
1932 |
} |
1933 |
|
1934 |
static void scsi_disk_reset(DeviceState *dev) |
1935 |
{ |
1936 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev); |
1937 |
uint64_t nb_sectors; |
1938 |
|
1939 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(RESET)); |
1940 |
|
1941 |
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors); |
1942 |
nb_sectors /= s->qdev.blocksize / 512;
|
1943 |
if (nb_sectors) {
|
1944 |
nb_sectors--; |
1945 |
} |
1946 |
s->qdev.max_lba = nb_sectors; |
1947 |
} |
1948 |
|
1949 |
static void scsi_destroy(SCSIDevice *dev) |
1950 |
{ |
1951 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
1952 |
|
1953 |
scsi_device_purge_requests(&s->qdev, SENSE_CODE(NO_SENSE)); |
1954 |
blockdev_mark_auto_del(s->qdev.conf.bs); |
1955 |
} |
1956 |
|
1957 |
static void scsi_disk_resize_cb(void *opaque) |
1958 |
{ |
1959 |
SCSIDiskState *s = opaque; |
1960 |
|
1961 |
/* SPC lists this sense code as available only for
|
1962 |
* direct-access devices.
|
1963 |
*/
|
1964 |
if (s->qdev.type == TYPE_DISK) {
|
1965 |
scsi_device_set_ua(&s->qdev, SENSE_CODE(CAPACITY_CHANGED)); |
1966 |
scsi_device_report_change(&s->qdev, SENSE_CODE(CAPACITY_CHANGED)); |
1967 |
} |
1968 |
} |
1969 |
|
1970 |
static void scsi_cd_change_media_cb(void *opaque, bool load) |
1971 |
{ |
1972 |
SCSIDiskState *s = opaque; |
1973 |
|
1974 |
/*
|
1975 |
* When a CD gets changed, we have to report an ejected state and
|
1976 |
* then a loaded state to guests so that they detect tray
|
1977 |
* open/close and media change events. Guests that do not use
|
1978 |
* GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
|
1979 |
* states rely on this behavior.
|
1980 |
*
|
1981 |
* media_changed governs the state machine used for unit attention
|
1982 |
* report. media_event is used by GET EVENT STATUS NOTIFICATION.
|
1983 |
*/
|
1984 |
s->media_changed = load; |
1985 |
s->tray_open = !load; |
1986 |
scsi_device_set_ua(&s->qdev, SENSE_CODE(UNIT_ATTENTION_NO_MEDIUM)); |
1987 |
s->media_event = true;
|
1988 |
s->eject_request = false;
|
1989 |
} |
1990 |
|
1991 |
static void scsi_cd_eject_request_cb(void *opaque, bool force) |
1992 |
{ |
1993 |
SCSIDiskState *s = opaque; |
1994 |
|
1995 |
s->eject_request = true;
|
1996 |
if (force) {
|
1997 |
s->tray_locked = false;
|
1998 |
} |
1999 |
} |
2000 |
|
2001 |
static bool scsi_cd_is_tray_open(void *opaque) |
2002 |
{ |
2003 |
return ((SCSIDiskState *)opaque)->tray_open;
|
2004 |
} |
2005 |
|
2006 |
static bool scsi_cd_is_medium_locked(void *opaque) |
2007 |
{ |
2008 |
return ((SCSIDiskState *)opaque)->tray_locked;
|
2009 |
} |
2010 |
|
2011 |
static const BlockDevOps scsi_disk_removable_block_ops = { |
2012 |
.change_media_cb = scsi_cd_change_media_cb, |
2013 |
.eject_request_cb = scsi_cd_eject_request_cb, |
2014 |
.is_tray_open = scsi_cd_is_tray_open, |
2015 |
.is_medium_locked = scsi_cd_is_medium_locked, |
2016 |
|
2017 |
.resize_cb = scsi_disk_resize_cb, |
2018 |
}; |
2019 |
|
2020 |
static const BlockDevOps scsi_disk_block_ops = { |
2021 |
.resize_cb = scsi_disk_resize_cb, |
2022 |
}; |
2023 |
|
2024 |
static void scsi_disk_unit_attention_reported(SCSIDevice *dev) |
2025 |
{ |
2026 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2027 |
if (s->media_changed) {
|
2028 |
s->media_changed = false;
|
2029 |
scsi_device_set_ua(&s->qdev, SENSE_CODE(MEDIUM_CHANGED)); |
2030 |
} |
2031 |
} |
2032 |
|
2033 |
static int scsi_initfn(SCSIDevice *dev) |
2034 |
{ |
2035 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2036 |
|
2037 |
if (!s->qdev.conf.bs) {
|
2038 |
error_report("drive property not set");
|
2039 |
return -1; |
2040 |
} |
2041 |
|
2042 |
if (!(s->features & (1 << SCSI_DISK_F_REMOVABLE)) && |
2043 |
!bdrv_is_inserted(s->qdev.conf.bs)) { |
2044 |
error_report("Device needs media, but drive is empty");
|
2045 |
return -1; |
2046 |
} |
2047 |
|
2048 |
blkconf_serial(&s->qdev.conf, &s->serial); |
2049 |
if (dev->type == TYPE_DISK
|
2050 |
&& blkconf_geometry(&dev->conf, NULL, 65535, 255, 255) < 0) { |
2051 |
return -1; |
2052 |
} |
2053 |
|
2054 |
if (!s->version) {
|
2055 |
s->version = g_strdup(qemu_get_version()); |
2056 |
} |
2057 |
if (!s->vendor) {
|
2058 |
s->vendor = g_strdup("QEMU");
|
2059 |
} |
2060 |
|
2061 |
if (bdrv_is_sg(s->qdev.conf.bs)) {
|
2062 |
error_report("unwanted /dev/sg*");
|
2063 |
return -1; |
2064 |
} |
2065 |
|
2066 |
if (s->features & (1 << SCSI_DISK_F_REMOVABLE)) { |
2067 |
bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_removable_block_ops, s); |
2068 |
} else {
|
2069 |
bdrv_set_dev_ops(s->qdev.conf.bs, &scsi_disk_block_ops, s); |
2070 |
} |
2071 |
bdrv_set_buffer_alignment(s->qdev.conf.bs, s->qdev.blocksize); |
2072 |
|
2073 |
bdrv_iostatus_enable(s->qdev.conf.bs); |
2074 |
add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, NULL);
|
2075 |
return 0; |
2076 |
} |
2077 |
|
2078 |
static int scsi_hd_initfn(SCSIDevice *dev) |
2079 |
{ |
2080 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2081 |
s->qdev.blocksize = s->qdev.conf.logical_block_size; |
2082 |
s->qdev.type = TYPE_DISK; |
2083 |
if (!s->product) {
|
2084 |
s->product = g_strdup("QEMU HARDDISK");
|
2085 |
} |
2086 |
return scsi_initfn(&s->qdev);
|
2087 |
} |
2088 |
|
2089 |
static int scsi_cd_initfn(SCSIDevice *dev) |
2090 |
{ |
2091 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2092 |
s->qdev.blocksize = 2048;
|
2093 |
s->qdev.type = TYPE_ROM; |
2094 |
s->features |= 1 << SCSI_DISK_F_REMOVABLE;
|
2095 |
if (!s->product) {
|
2096 |
s->product = g_strdup("QEMU CD-ROM");
|
2097 |
} |
2098 |
return scsi_initfn(&s->qdev);
|
2099 |
} |
2100 |
|
2101 |
static int scsi_disk_initfn(SCSIDevice *dev) |
2102 |
{ |
2103 |
DriveInfo *dinfo; |
2104 |
|
2105 |
if (!dev->conf.bs) {
|
2106 |
return scsi_initfn(dev); /* ... and die there */ |
2107 |
} |
2108 |
|
2109 |
dinfo = drive_get_by_blockdev(dev->conf.bs); |
2110 |
if (dinfo->media_cd) {
|
2111 |
return scsi_cd_initfn(dev);
|
2112 |
} else {
|
2113 |
return scsi_hd_initfn(dev);
|
2114 |
} |
2115 |
} |
2116 |
|
2117 |
static const SCSIReqOps scsi_disk_emulate_reqops = { |
2118 |
.size = sizeof(SCSIDiskReq),
|
2119 |
.free_req = scsi_free_request, |
2120 |
.send_command = scsi_disk_emulate_command, |
2121 |
.read_data = scsi_disk_emulate_read_data, |
2122 |
.write_data = scsi_disk_emulate_write_data, |
2123 |
.get_buf = scsi_get_buf, |
2124 |
}; |
2125 |
|
2126 |
static const SCSIReqOps scsi_disk_dma_reqops = { |
2127 |
.size = sizeof(SCSIDiskReq),
|
2128 |
.free_req = scsi_free_request, |
2129 |
.send_command = scsi_disk_dma_command, |
2130 |
.read_data = scsi_read_data, |
2131 |
.write_data = scsi_write_data, |
2132 |
.cancel_io = scsi_cancel_io, |
2133 |
.get_buf = scsi_get_buf, |
2134 |
.load_request = scsi_disk_load_request, |
2135 |
.save_request = scsi_disk_save_request, |
2136 |
}; |
2137 |
|
2138 |
static const SCSIReqOps *const scsi_disk_reqops_dispatch[256] = { |
2139 |
[TEST_UNIT_READY] = &scsi_disk_emulate_reqops, |
2140 |
[INQUIRY] = &scsi_disk_emulate_reqops, |
2141 |
[MODE_SENSE] = &scsi_disk_emulate_reqops, |
2142 |
[MODE_SENSE_10] = &scsi_disk_emulate_reqops, |
2143 |
[START_STOP] = &scsi_disk_emulate_reqops, |
2144 |
[ALLOW_MEDIUM_REMOVAL] = &scsi_disk_emulate_reqops, |
2145 |
[READ_CAPACITY_10] = &scsi_disk_emulate_reqops, |
2146 |
[READ_TOC] = &scsi_disk_emulate_reqops, |
2147 |
[READ_DVD_STRUCTURE] = &scsi_disk_emulate_reqops, |
2148 |
[READ_DISC_INFORMATION] = &scsi_disk_emulate_reqops, |
2149 |
[GET_CONFIGURATION] = &scsi_disk_emulate_reqops, |
2150 |
[GET_EVENT_STATUS_NOTIFICATION] = &scsi_disk_emulate_reqops, |
2151 |
[MECHANISM_STATUS] = &scsi_disk_emulate_reqops, |
2152 |
[SERVICE_ACTION_IN_16] = &scsi_disk_emulate_reqops, |
2153 |
[REQUEST_SENSE] = &scsi_disk_emulate_reqops, |
2154 |
[SYNCHRONIZE_CACHE] = &scsi_disk_emulate_reqops, |
2155 |
[SEEK_10] = &scsi_disk_emulate_reqops, |
2156 |
[MODE_SELECT] = &scsi_disk_emulate_reqops, |
2157 |
[MODE_SELECT_10] = &scsi_disk_emulate_reqops, |
2158 |
[UNMAP] = &scsi_disk_emulate_reqops, |
2159 |
[WRITE_SAME_10] = &scsi_disk_emulate_reqops, |
2160 |
[WRITE_SAME_16] = &scsi_disk_emulate_reqops, |
2161 |
|
2162 |
[READ_6] = &scsi_disk_dma_reqops, |
2163 |
[READ_10] = &scsi_disk_dma_reqops, |
2164 |
[READ_12] = &scsi_disk_dma_reqops, |
2165 |
[READ_16] = &scsi_disk_dma_reqops, |
2166 |
[VERIFY_10] = &scsi_disk_dma_reqops, |
2167 |
[VERIFY_12] = &scsi_disk_dma_reqops, |
2168 |
[VERIFY_16] = &scsi_disk_dma_reqops, |
2169 |
[WRITE_6] = &scsi_disk_dma_reqops, |
2170 |
[WRITE_10] = &scsi_disk_dma_reqops, |
2171 |
[WRITE_12] = &scsi_disk_dma_reqops, |
2172 |
[WRITE_16] = &scsi_disk_dma_reqops, |
2173 |
[WRITE_VERIFY_10] = &scsi_disk_dma_reqops, |
2174 |
[WRITE_VERIFY_12] = &scsi_disk_dma_reqops, |
2175 |
[WRITE_VERIFY_16] = &scsi_disk_dma_reqops, |
2176 |
}; |
2177 |
|
2178 |
static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag, uint32_t lun,
|
2179 |
uint8_t *buf, void *hba_private)
|
2180 |
{ |
2181 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
2182 |
SCSIRequest *req; |
2183 |
const SCSIReqOps *ops;
|
2184 |
uint8_t command; |
2185 |
|
2186 |
command = buf[0];
|
2187 |
ops = scsi_disk_reqops_dispatch[command]; |
2188 |
if (!ops) {
|
2189 |
ops = &scsi_disk_emulate_reqops; |
2190 |
} |
2191 |
req = scsi_req_alloc(ops, &s->qdev, tag, lun, hba_private); |
2192 |
|
2193 |
#ifdef DEBUG_SCSI
|
2194 |
DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]); |
2195 |
{ |
2196 |
int i;
|
2197 |
for (i = 1; i < req->cmd.len; i++) { |
2198 |
printf(" 0x%02x", buf[i]);
|
2199 |
} |
2200 |
printf("\n");
|
2201 |
} |
2202 |
#endif
|
2203 |
|
2204 |
return req;
|
2205 |
} |
2206 |
|
2207 |
#ifdef __linux__
|
2208 |
static int get_device_type(SCSIDiskState *s) |
2209 |
{ |
2210 |
BlockDriverState *bdrv = s->qdev.conf.bs; |
2211 |
uint8_t cmd[16];
|
2212 |
uint8_t buf[36];
|
2213 |
uint8_t sensebuf[8];
|
2214 |
sg_io_hdr_t io_header; |
2215 |
int ret;
|
2216 |
|
2217 |
memset(cmd, 0, sizeof(cmd)); |
2218 |
memset(buf, 0, sizeof(buf)); |
2219 |
cmd[0] = INQUIRY;
|
2220 |
cmd[4] = sizeof(buf); |
2221 |
|
2222 |
memset(&io_header, 0, sizeof(io_header)); |
2223 |
io_header.interface_id = 'S';
|
2224 |
io_header.dxfer_direction = SG_DXFER_FROM_DEV; |
2225 |
io_header.dxfer_len = sizeof(buf);
|
2226 |
io_header.dxferp = buf; |
2227 |
io_header.cmdp = cmd; |
2228 |
io_header.cmd_len = sizeof(cmd);
|
2229 |
io_header.mx_sb_len = sizeof(sensebuf);
|
2230 |
io_header.sbp = sensebuf; |
2231 |
io_header.timeout = 6000; /* XXX */ |
2232 |
|
2233 |
ret = bdrv_ioctl(bdrv, SG_IO, &io_header); |
2234 |
if (ret < 0 || io_header.driver_status || io_header.host_status) { |
2235 |
return -1; |
2236 |
} |
2237 |
s->qdev.type = buf[0];
|
2238 |
if (buf[1] & 0x80) { |
2239 |
s->features |= 1 << SCSI_DISK_F_REMOVABLE;
|
2240 |
} |
2241 |
return 0; |
2242 |
} |
2243 |
|
2244 |
static int scsi_block_initfn(SCSIDevice *dev) |
2245 |
{ |
2246 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev); |
2247 |
int sg_version;
|
2248 |
int rc;
|
2249 |
|
2250 |
if (!s->qdev.conf.bs) {
|
2251 |
error_report("scsi-block: drive property not set");
|
2252 |
return -1; |
2253 |
} |
2254 |
|
2255 |
/* check we are using a driver managing SG_IO (version 3 and after) */
|
2256 |
if (bdrv_ioctl(s->qdev.conf.bs, SG_GET_VERSION_NUM, &sg_version) < 0 || |
2257 |
sg_version < 30000) {
|
2258 |
error_report("scsi-block: scsi generic interface too old");
|
2259 |
return -1; |
2260 |
} |
2261 |
|
2262 |
/* get device type from INQUIRY data */
|
2263 |
rc = get_device_type(s); |
2264 |
if (rc < 0) { |
2265 |
error_report("scsi-block: INQUIRY failed");
|
2266 |
return -1; |
2267 |
} |
2268 |
|
2269 |
/* Make a guess for the block size, we'll fix it when the guest sends.
|
2270 |
* READ CAPACITY. If they don't, they likely would assume these sizes
|
2271 |
* anyway. (TODO: check in /sys).
|
2272 |
*/
|
2273 |
if (s->qdev.type == TYPE_ROM || s->qdev.type == TYPE_WORM) {
|
2274 |
s->qdev.blocksize = 2048;
|
2275 |
} else {
|
2276 |
s->qdev.blocksize = 512;
|
2277 |
} |
2278 |
return scsi_initfn(&s->qdev);
|
2279 |
} |
2280 |
|
2281 |
static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
|
2282 |
uint32_t lun, uint8_t *buf, |
2283 |
void *hba_private)
|
2284 |
{ |
2285 |
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d); |
2286 |
|
2287 |
switch (buf[0]) { |
2288 |
case READ_6:
|
2289 |
case READ_10:
|
2290 |
case READ_12:
|
2291 |
case READ_16:
|
2292 |
case VERIFY_10:
|
2293 |
case VERIFY_12:
|
2294 |
case VERIFY_16:
|
2295 |
case WRITE_6:
|
2296 |
case WRITE_10:
|
2297 |
case WRITE_12:
|
2298 |
case WRITE_16:
|
2299 |
case WRITE_VERIFY_10:
|
2300 |
case WRITE_VERIFY_12:
|
2301 |
case WRITE_VERIFY_16:
|
2302 |
/* If we are not using O_DIRECT, we might read stale data from the
|
2303 |
* host cache if writes were made using other commands than these
|
2304 |
* ones (such as WRITE SAME or EXTENDED COPY, etc.). So, without
|
2305 |
* O_DIRECT everything must go through SG_IO.
|
2306 |
*/
|
2307 |
if (bdrv_get_flags(s->qdev.conf.bs) & BDRV_O_NOCACHE) {
|
2308 |
break;
|
2309 |
} |
2310 |
|
2311 |
/* MMC writing cannot be done via pread/pwrite, because it sometimes
|
2312 |
* involves writing beyond the maximum LBA or to negative LBA (lead-in).
|
2313 |
* And once you do these writes, reading from the block device is
|
2314 |
* unreliable, too. It is even possible that reads deliver random data
|
2315 |
* from the host page cache (this is probably a Linux bug).
|
2316 |
*
|
2317 |
* We might use scsi_disk_dma_reqops as long as no writing commands are
|
2318 |
* seen, but performance usually isn't paramount on optical media. So,
|
2319 |
* just make scsi-block operate the same as scsi-generic for them.
|
2320 |
*/
|
2321 |
if (s->qdev.type != TYPE_ROM) {
|
2322 |
return scsi_req_alloc(&scsi_disk_dma_reqops, &s->qdev, tag, lun,
|
2323 |
hba_private); |
2324 |
} |
2325 |
} |
2326 |
|
2327 |
return scsi_req_alloc(&scsi_generic_req_ops, &s->qdev, tag, lun,
|
2328 |
hba_private); |
2329 |
} |
2330 |
#endif
|
2331 |
|
2332 |
#define DEFINE_SCSI_DISK_PROPERTIES() \
|
2333 |
DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \ |
2334 |
DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
|
2335 |
DEFINE_PROP_STRING("serial", SCSIDiskState, serial), \
|
2336 |
DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor), \
|
2337 |
DEFINE_PROP_STRING("product", SCSIDiskState, product)
|
2338 |
|
2339 |
static Property scsi_hd_properties[] = {
|
2340 |
DEFINE_SCSI_DISK_PROPERTIES(), |
2341 |
DEFINE_PROP_BIT("removable", SCSIDiskState, features,
|
2342 |
SCSI_DISK_F_REMOVABLE, false),
|
2343 |
DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
|
2344 |
SCSI_DISK_F_DPOFUA, false),
|
2345 |
DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0), |
2346 |
DEFINE_BLOCK_CHS_PROPERTIES(SCSIDiskState, qdev.conf), |
2347 |
DEFINE_PROP_END_OF_LIST(), |
2348 |
}; |
2349 |
|
2350 |
static const VMStateDescription vmstate_scsi_disk_state = { |
2351 |
.name = "scsi-disk",
|
2352 |
.version_id = 1,
|
2353 |
.minimum_version_id = 1,
|
2354 |
.minimum_version_id_old = 1,
|
2355 |
.fields = (VMStateField[]) { |
2356 |
VMSTATE_SCSI_DEVICE(qdev, SCSIDiskState), |
2357 |
VMSTATE_BOOL(media_changed, SCSIDiskState), |
2358 |
VMSTATE_BOOL(media_event, SCSIDiskState), |
2359 |
VMSTATE_BOOL(eject_request, SCSIDiskState), |
2360 |
VMSTATE_BOOL(tray_open, SCSIDiskState), |
2361 |
VMSTATE_BOOL(tray_locked, SCSIDiskState), |
2362 |
VMSTATE_END_OF_LIST() |
2363 |
} |
2364 |
}; |
2365 |
|
2366 |
static void scsi_hd_class_initfn(ObjectClass *klass, void *data) |
2367 |
{ |
2368 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2369 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2370 |
|
2371 |
sc->init = scsi_hd_initfn; |
2372 |
sc->destroy = scsi_destroy; |
2373 |
sc->alloc_req = scsi_new_request; |
2374 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
2375 |
dc->fw_name = "disk";
|
2376 |
dc->desc = "virtual SCSI disk";
|
2377 |
dc->reset = scsi_disk_reset; |
2378 |
dc->props = scsi_hd_properties; |
2379 |
dc->vmsd = &vmstate_scsi_disk_state; |
2380 |
} |
2381 |
|
2382 |
static TypeInfo scsi_hd_info = {
|
2383 |
.name = "scsi-hd",
|
2384 |
.parent = TYPE_SCSI_DEVICE, |
2385 |
.instance_size = sizeof(SCSIDiskState),
|
2386 |
.class_init = scsi_hd_class_initfn, |
2387 |
}; |
2388 |
|
2389 |
static Property scsi_cd_properties[] = {
|
2390 |
DEFINE_SCSI_DISK_PROPERTIES(), |
2391 |
DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0), |
2392 |
DEFINE_PROP_END_OF_LIST(), |
2393 |
}; |
2394 |
|
2395 |
static void scsi_cd_class_initfn(ObjectClass *klass, void *data) |
2396 |
{ |
2397 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2398 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2399 |
|
2400 |
sc->init = scsi_cd_initfn; |
2401 |
sc->destroy = scsi_destroy; |
2402 |
sc->alloc_req = scsi_new_request; |
2403 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
2404 |
dc->fw_name = "disk";
|
2405 |
dc->desc = "virtual SCSI CD-ROM";
|
2406 |
dc->reset = scsi_disk_reset; |
2407 |
dc->props = scsi_cd_properties; |
2408 |
dc->vmsd = &vmstate_scsi_disk_state; |
2409 |
} |
2410 |
|
2411 |
static TypeInfo scsi_cd_info = {
|
2412 |
.name = "scsi-cd",
|
2413 |
.parent = TYPE_SCSI_DEVICE, |
2414 |
.instance_size = sizeof(SCSIDiskState),
|
2415 |
.class_init = scsi_cd_class_initfn, |
2416 |
}; |
2417 |
|
2418 |
#ifdef __linux__
|
2419 |
static Property scsi_block_properties[] = {
|
2420 |
DEFINE_PROP_DRIVE("drive", SCSIDiskState, qdev.conf.bs),
|
2421 |
DEFINE_PROP_INT32("bootindex", SCSIDiskState, qdev.conf.bootindex, -1), |
2422 |
DEFINE_PROP_END_OF_LIST(), |
2423 |
}; |
2424 |
|
2425 |
static void scsi_block_class_initfn(ObjectClass *klass, void *data) |
2426 |
{ |
2427 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2428 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2429 |
|
2430 |
sc->init = scsi_block_initfn; |
2431 |
sc->destroy = scsi_destroy; |
2432 |
sc->alloc_req = scsi_block_new_request; |
2433 |
dc->fw_name = "disk";
|
2434 |
dc->desc = "SCSI block device passthrough";
|
2435 |
dc->reset = scsi_disk_reset; |
2436 |
dc->props = scsi_block_properties; |
2437 |
dc->vmsd = &vmstate_scsi_disk_state; |
2438 |
} |
2439 |
|
2440 |
static TypeInfo scsi_block_info = {
|
2441 |
.name = "scsi-block",
|
2442 |
.parent = TYPE_SCSI_DEVICE, |
2443 |
.instance_size = sizeof(SCSIDiskState),
|
2444 |
.class_init = scsi_block_class_initfn, |
2445 |
}; |
2446 |
#endif
|
2447 |
|
2448 |
static Property scsi_disk_properties[] = {
|
2449 |
DEFINE_SCSI_DISK_PROPERTIES(), |
2450 |
DEFINE_PROP_BIT("removable", SCSIDiskState, features,
|
2451 |
SCSI_DISK_F_REMOVABLE, false),
|
2452 |
DEFINE_PROP_BIT("dpofua", SCSIDiskState, features,
|
2453 |
SCSI_DISK_F_DPOFUA, false),
|
2454 |
DEFINE_PROP_HEX64("wwn", SCSIDiskState, wwn, 0), |
2455 |
DEFINE_PROP_END_OF_LIST(), |
2456 |
}; |
2457 |
|
2458 |
static void scsi_disk_class_initfn(ObjectClass *klass, void *data) |
2459 |
{ |
2460 |
DeviceClass *dc = DEVICE_CLASS(klass); |
2461 |
SCSIDeviceClass *sc = SCSI_DEVICE_CLASS(klass); |
2462 |
|
2463 |
sc->init = scsi_disk_initfn; |
2464 |
sc->destroy = scsi_destroy; |
2465 |
sc->alloc_req = scsi_new_request; |
2466 |
sc->unit_attention_reported = scsi_disk_unit_attention_reported; |
2467 |
dc->fw_name = "disk";
|
2468 |
dc->desc = "virtual SCSI disk or CD-ROM (legacy)";
|
2469 |
dc->reset = scsi_disk_reset; |
2470 |
dc->props = scsi_disk_properties; |
2471 |
dc->vmsd = &vmstate_scsi_disk_state; |
2472 |
} |
2473 |
|
2474 |
static TypeInfo scsi_disk_info = {
|
2475 |
.name = "scsi-disk",
|
2476 |
.parent = TYPE_SCSI_DEVICE, |
2477 |
.instance_size = sizeof(SCSIDiskState),
|
2478 |
.class_init = scsi_disk_class_initfn, |
2479 |
}; |
2480 |
|
2481 |
static void scsi_disk_register_types(void) |
2482 |
{ |
2483 |
type_register_static(&scsi_hd_info); |
2484 |
type_register_static(&scsi_cd_info); |
2485 |
#ifdef __linux__
|
2486 |
type_register_static(&scsi_block_info); |
2487 |
#endif
|
2488 |
type_register_static(&scsi_disk_info); |
2489 |
} |
2490 |
|
2491 |
type_init(scsi_disk_register_types) |