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a0a7573b84
We already track it in BlockDriverState. Just like tray open/close state, we should track it in the device models instead, because it's device state. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
1157 lines
34 KiB
C
1157 lines
34 KiB
C
/*
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* QEMU ATAPI Emulation
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*
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* Copyright (c) 2003 Fabrice Bellard
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* Copyright (c) 2006 Openedhand Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw/ide/internal.h"
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#include "hw/scsi.h"
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static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret);
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static void padstr8(uint8_t *buf, int buf_size, const char *src)
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{
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int i;
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for(i = 0; i < buf_size; i++) {
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if (*src)
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buf[i] = *src++;
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else
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buf[i] = ' ';
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}
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}
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static inline void cpu_to_ube16(uint8_t *buf, int val)
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{
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buf[0] = val >> 8;
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buf[1] = val & 0xff;
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}
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static inline void cpu_to_ube32(uint8_t *buf, unsigned int val)
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{
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buf[0] = val >> 24;
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buf[1] = val >> 16;
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buf[2] = val >> 8;
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buf[3] = val & 0xff;
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}
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static inline int ube16_to_cpu(const uint8_t *buf)
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{
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return (buf[0] << 8) | buf[1];
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}
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static inline int ube32_to_cpu(const uint8_t *buf)
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{
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return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
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}
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static void lba_to_msf(uint8_t *buf, int lba)
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{
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lba += 150;
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buf[0] = (lba / 75) / 60;
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buf[1] = (lba / 75) % 60;
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buf[2] = lba % 75;
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}
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static inline int media_present(IDEState *s)
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{
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return !s->tray_open && s->nb_sectors > 0;
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}
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/* XXX: DVDs that could fit on a CD will be reported as a CD */
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static inline int media_is_dvd(IDEState *s)
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{
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return (media_present(s) && s->nb_sectors > CD_MAX_SECTORS);
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}
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static inline int media_is_cd(IDEState *s)
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{
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return (media_present(s) && s->nb_sectors <= CD_MAX_SECTORS);
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}
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static void cd_data_to_raw(uint8_t *buf, int lba)
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{
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/* sync bytes */
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buf[0] = 0x00;
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memset(buf + 1, 0xff, 10);
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buf[11] = 0x00;
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buf += 12;
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/* MSF */
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lba_to_msf(buf, lba);
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buf[3] = 0x01; /* mode 1 data */
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buf += 4;
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/* data */
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buf += 2048;
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/* XXX: ECC not computed */
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memset(buf, 0, 288);
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}
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static int cd_read_sector(IDEState *s, int lba, uint8_t *buf, int sector_size)
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{
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int ret;
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switch(sector_size) {
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case 2048:
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bdrv_acct_start(s->bs, &s->acct, 4 * BDRV_SECTOR_SIZE, BDRV_ACCT_READ);
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ret = bdrv_read(s->bs, (int64_t)lba << 2, buf, 4);
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bdrv_acct_done(s->bs, &s->acct);
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break;
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case 2352:
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bdrv_acct_start(s->bs, &s->acct, 4 * BDRV_SECTOR_SIZE, BDRV_ACCT_READ);
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ret = bdrv_read(s->bs, (int64_t)lba << 2, buf + 16, 4);
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bdrv_acct_done(s->bs, &s->acct);
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if (ret < 0)
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return ret;
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cd_data_to_raw(buf, lba);
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break;
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default:
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ret = -EIO;
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break;
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}
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return ret;
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}
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void ide_atapi_cmd_ok(IDEState *s)
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{
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s->error = 0;
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s->status = READY_STAT | SEEK_STAT;
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s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
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ide_set_irq(s->bus);
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}
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void ide_atapi_cmd_error(IDEState *s, int sense_key, int asc)
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{
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#ifdef DEBUG_IDE_ATAPI
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printf("atapi_cmd_error: sense=0x%x asc=0x%x\n", sense_key, asc);
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#endif
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s->error = sense_key << 4;
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s->status = READY_STAT | ERR_STAT;
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s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
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s->sense_key = sense_key;
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s->asc = asc;
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ide_set_irq(s->bus);
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}
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void ide_atapi_io_error(IDEState *s, int ret)
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{
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/* XXX: handle more errors */
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if (ret == -ENOMEDIUM) {
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ide_atapi_cmd_error(s, SENSE_NOT_READY,
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ASC_MEDIUM_NOT_PRESENT);
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} else {
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ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
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ASC_LOGICAL_BLOCK_OOR);
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}
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}
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/* The whole ATAPI transfer logic is handled in this function */
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void ide_atapi_cmd_reply_end(IDEState *s)
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{
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int byte_count_limit, size, ret;
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#ifdef DEBUG_IDE_ATAPI
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printf("reply: tx_size=%d elem_tx_size=%d index=%d\n",
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s->packet_transfer_size,
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s->elementary_transfer_size,
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s->io_buffer_index);
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#endif
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if (s->packet_transfer_size <= 0) {
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/* end of transfer */
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ide_transfer_stop(s);
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s->status = READY_STAT | SEEK_STAT;
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s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
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ide_set_irq(s->bus);
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#ifdef DEBUG_IDE_ATAPI
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printf("status=0x%x\n", s->status);
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#endif
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} else {
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/* see if a new sector must be read */
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if (s->lba != -1 && s->io_buffer_index >= s->cd_sector_size) {
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ret = cd_read_sector(s, s->lba, s->io_buffer, s->cd_sector_size);
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if (ret < 0) {
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ide_transfer_stop(s);
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ide_atapi_io_error(s, ret);
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return;
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}
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s->lba++;
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s->io_buffer_index = 0;
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}
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if (s->elementary_transfer_size > 0) {
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/* there are some data left to transmit in this elementary
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transfer */
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size = s->cd_sector_size - s->io_buffer_index;
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if (size > s->elementary_transfer_size)
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size = s->elementary_transfer_size;
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s->packet_transfer_size -= size;
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s->elementary_transfer_size -= size;
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s->io_buffer_index += size;
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ide_transfer_start(s, s->io_buffer + s->io_buffer_index - size,
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size, ide_atapi_cmd_reply_end);
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} else {
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/* a new transfer is needed */
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s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO;
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byte_count_limit = s->lcyl | (s->hcyl << 8);
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#ifdef DEBUG_IDE_ATAPI
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printf("byte_count_limit=%d\n", byte_count_limit);
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#endif
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if (byte_count_limit == 0xffff)
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byte_count_limit--;
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size = s->packet_transfer_size;
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if (size > byte_count_limit) {
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/* byte count limit must be even if this case */
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if (byte_count_limit & 1)
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byte_count_limit--;
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size = byte_count_limit;
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}
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s->lcyl = size;
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s->hcyl = size >> 8;
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s->elementary_transfer_size = size;
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/* we cannot transmit more than one sector at a time */
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if (s->lba != -1) {
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if (size > (s->cd_sector_size - s->io_buffer_index))
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size = (s->cd_sector_size - s->io_buffer_index);
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}
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s->packet_transfer_size -= size;
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s->elementary_transfer_size -= size;
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s->io_buffer_index += size;
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ide_transfer_start(s, s->io_buffer + s->io_buffer_index - size,
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size, ide_atapi_cmd_reply_end);
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ide_set_irq(s->bus);
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#ifdef DEBUG_IDE_ATAPI
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printf("status=0x%x\n", s->status);
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#endif
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}
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}
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}
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/* send a reply of 'size' bytes in s->io_buffer to an ATAPI command */
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static void ide_atapi_cmd_reply(IDEState *s, int size, int max_size)
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{
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if (size > max_size)
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size = max_size;
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s->lba = -1; /* no sector read */
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s->packet_transfer_size = size;
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s->io_buffer_size = size; /* dma: send the reply data as one chunk */
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s->elementary_transfer_size = 0;
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s->io_buffer_index = 0;
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if (s->atapi_dma) {
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bdrv_acct_start(s->bs, &s->acct, size, BDRV_ACCT_READ);
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s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
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s->bus->dma->ops->start_dma(s->bus->dma, s,
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ide_atapi_cmd_read_dma_cb);
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} else {
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s->status = READY_STAT | SEEK_STAT;
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ide_atapi_cmd_reply_end(s);
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}
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}
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/* start a CD-CDROM read command */
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static void ide_atapi_cmd_read_pio(IDEState *s, int lba, int nb_sectors,
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int sector_size)
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{
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s->lba = lba;
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s->packet_transfer_size = nb_sectors * sector_size;
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s->elementary_transfer_size = 0;
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s->io_buffer_index = sector_size;
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s->cd_sector_size = sector_size;
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s->status = READY_STAT | SEEK_STAT;
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ide_atapi_cmd_reply_end(s);
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}
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static void ide_atapi_cmd_check_status(IDEState *s)
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{
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#ifdef DEBUG_IDE_ATAPI
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printf("atapi_cmd_check_status\n");
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#endif
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s->error = MC_ERR | (SENSE_UNIT_ATTENTION << 4);
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s->status = ERR_STAT;
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s->nsector = 0;
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ide_set_irq(s->bus);
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}
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/* ATAPI DMA support */
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/* XXX: handle read errors */
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static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret)
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{
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IDEState *s = opaque;
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int data_offset, n;
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if (ret < 0) {
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ide_atapi_io_error(s, ret);
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goto eot;
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}
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if (s->io_buffer_size > 0) {
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/*
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* For a cdrom read sector command (s->lba != -1),
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* adjust the lba for the next s->io_buffer_size chunk
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* and dma the current chunk.
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* For a command != read (s->lba == -1), just transfer
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* the reply data.
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*/
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if (s->lba != -1) {
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if (s->cd_sector_size == 2352) {
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n = 1;
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cd_data_to_raw(s->io_buffer, s->lba);
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} else {
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n = s->io_buffer_size >> 11;
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}
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s->lba += n;
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}
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s->packet_transfer_size -= s->io_buffer_size;
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if (s->bus->dma->ops->rw_buf(s->bus->dma, 1) == 0)
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goto eot;
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}
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if (s->packet_transfer_size <= 0) {
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s->status = READY_STAT | SEEK_STAT;
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s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
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ide_set_irq(s->bus);
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goto eot;
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}
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s->io_buffer_index = 0;
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if (s->cd_sector_size == 2352) {
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n = 1;
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s->io_buffer_size = s->cd_sector_size;
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data_offset = 16;
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} else {
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n = s->packet_transfer_size >> 11;
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if (n > (IDE_DMA_BUF_SECTORS / 4))
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n = (IDE_DMA_BUF_SECTORS / 4);
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s->io_buffer_size = n * 2048;
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data_offset = 0;
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}
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#ifdef DEBUG_AIO
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printf("aio_read_cd: lba=%u n=%d\n", s->lba, n);
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#endif
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s->bus->dma->iov.iov_base = (void *)(s->io_buffer + data_offset);
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s->bus->dma->iov.iov_len = n * 4 * 512;
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qemu_iovec_init_external(&s->bus->dma->qiov, &s->bus->dma->iov, 1);
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s->bus->dma->aiocb = bdrv_aio_readv(s->bs, (int64_t)s->lba << 2,
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&s->bus->dma->qiov, n * 4,
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ide_atapi_cmd_read_dma_cb, s);
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if (!s->bus->dma->aiocb) {
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/* Note: media not present is the most likely case */
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ide_atapi_cmd_error(s, SENSE_NOT_READY,
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ASC_MEDIUM_NOT_PRESENT);
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goto eot;
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}
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return;
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eot:
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bdrv_acct_done(s->bs, &s->acct);
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s->bus->dma->ops->add_status(s->bus->dma, BM_STATUS_INT);
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ide_set_inactive(s);
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}
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/* start a CD-CDROM read command with DMA */
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/* XXX: test if DMA is available */
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static void ide_atapi_cmd_read_dma(IDEState *s, int lba, int nb_sectors,
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int sector_size)
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{
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s->lba = lba;
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s->packet_transfer_size = nb_sectors * sector_size;
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s->io_buffer_index = 0;
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s->io_buffer_size = 0;
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s->cd_sector_size = sector_size;
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bdrv_acct_start(s->bs, &s->acct, s->packet_transfer_size, BDRV_ACCT_READ);
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/* XXX: check if BUSY_STAT should be set */
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s->status = READY_STAT | SEEK_STAT | DRQ_STAT | BUSY_STAT;
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s->bus->dma->ops->start_dma(s->bus->dma, s,
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ide_atapi_cmd_read_dma_cb);
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}
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static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors,
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int sector_size)
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{
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#ifdef DEBUG_IDE_ATAPI
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printf("read %s: LBA=%d nb_sectors=%d\n", s->atapi_dma ? "dma" : "pio",
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lba, nb_sectors);
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#endif
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if (s->atapi_dma) {
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ide_atapi_cmd_read_dma(s, lba, nb_sectors, sector_size);
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} else {
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ide_atapi_cmd_read_pio(s, lba, nb_sectors, sector_size);
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}
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}
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static inline uint8_t ide_atapi_set_profile(uint8_t *buf, uint8_t *index,
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uint16_t profile)
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{
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uint8_t *buf_profile = buf + 12; /* start of profiles */
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buf_profile += ((*index) * 4); /* start of indexed profile */
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cpu_to_ube16 (buf_profile, profile);
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buf_profile[2] = ((buf_profile[0] == buf[6]) && (buf_profile[1] == buf[7]));
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/* each profile adds 4 bytes to the response */
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(*index)++;
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buf[11] += 4; /* Additional Length */
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return 4;
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}
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static int ide_dvd_read_structure(IDEState *s, int format,
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const uint8_t *packet, uint8_t *buf)
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{
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switch (format) {
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case 0x0: /* Physical format information */
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{
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int layer = packet[6];
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uint64_t total_sectors;
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if (layer != 0)
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return -ASC_INV_FIELD_IN_CMD_PACKET;
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total_sectors = s->nb_sectors >> 2;
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if (total_sectors == 0) {
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return -ASC_MEDIUM_NOT_PRESENT;
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}
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buf[4] = 1; /* DVD-ROM, part version 1 */
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buf[5] = 0xf; /* 120mm disc, minimum rate unspecified */
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buf[6] = 1; /* one layer, read-only (per MMC-2 spec) */
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buf[7] = 0; /* default densities */
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/* FIXME: 0x30000 per spec? */
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cpu_to_ube32(buf + 8, 0); /* start sector */
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cpu_to_ube32(buf + 12, total_sectors - 1); /* end sector */
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cpu_to_ube32(buf + 16, total_sectors - 1); /* l0 end sector */
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/* Size of buffer, not including 2 byte size field */
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cpu_to_be16wu((uint16_t *)buf, 2048 + 2);
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/* 2k data + 4 byte header */
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return (2048 + 4);
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}
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case 0x01: /* DVD copyright information */
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buf[4] = 0; /* no copyright data */
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buf[5] = 0; /* no region restrictions */
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|
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/* Size of buffer, not including 2 byte size field */
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cpu_to_be16wu((uint16_t *)buf, 4 + 2);
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/* 4 byte header + 4 byte data */
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return (4 + 4);
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case 0x03: /* BCA information - invalid field for no BCA info */
|
|
return -ASC_INV_FIELD_IN_CMD_PACKET;
|
|
|
|
case 0x04: /* DVD disc manufacturing information */
|
|
/* Size of buffer, not including 2 byte size field */
|
|
cpu_to_be16wu((uint16_t *)buf, 2048 + 2);
|
|
|
|
/* 2k data + 4 byte header */
|
|
return (2048 + 4);
|
|
|
|
case 0xff:
|
|
/*
|
|
* This lists all the command capabilities above. Add new ones
|
|
* in order and update the length and buffer return values.
|
|
*/
|
|
|
|
buf[4] = 0x00; /* Physical format */
|
|
buf[5] = 0x40; /* Not writable, is readable */
|
|
cpu_to_be16wu((uint16_t *)(buf + 6), 2048 + 4);
|
|
|
|
buf[8] = 0x01; /* Copyright info */
|
|
buf[9] = 0x40; /* Not writable, is readable */
|
|
cpu_to_be16wu((uint16_t *)(buf + 10), 4 + 4);
|
|
|
|
buf[12] = 0x03; /* BCA info */
|
|
buf[13] = 0x40; /* Not writable, is readable */
|
|
cpu_to_be16wu((uint16_t *)(buf + 14), 188 + 4);
|
|
|
|
buf[16] = 0x04; /* Manufacturing info */
|
|
buf[17] = 0x40; /* Not writable, is readable */
|
|
cpu_to_be16wu((uint16_t *)(buf + 18), 2048 + 4);
|
|
|
|
/* Size of buffer, not including 2 byte size field */
|
|
cpu_to_be16wu((uint16_t *)buf, 16 + 2);
|
|
|
|
/* data written + 4 byte header */
|
|
return (16 + 4);
|
|
|
|
default: /* TODO: formats beyond DVD-ROM requires */
|
|
return -ASC_INV_FIELD_IN_CMD_PACKET;
|
|
}
|
|
}
|
|
|
|
static unsigned int event_status_media(IDEState *s,
|
|
uint8_t *buf)
|
|
{
|
|
enum media_event_code {
|
|
MEC_NO_CHANGE = 0, /* Status unchanged */
|
|
MEC_EJECT_REQUESTED, /* received a request from user to eject */
|
|
MEC_NEW_MEDIA, /* new media inserted and ready for access */
|
|
MEC_MEDIA_REMOVAL, /* only for media changers */
|
|
MEC_MEDIA_CHANGED, /* only for media changers */
|
|
MEC_BG_FORMAT_COMPLETED, /* MRW or DVD+RW b/g format completed */
|
|
MEC_BG_FORMAT_RESTARTED, /* MRW or DVD+RW b/g format restarted */
|
|
};
|
|
enum media_status {
|
|
MS_TRAY_OPEN = 1,
|
|
MS_MEDIA_PRESENT = 2,
|
|
};
|
|
uint8_t event_code, media_status;
|
|
|
|
media_status = 0;
|
|
if (s->tray_open) {
|
|
media_status = MS_TRAY_OPEN;
|
|
} else if (bdrv_is_inserted(s->bs)) {
|
|
media_status = MS_MEDIA_PRESENT;
|
|
}
|
|
|
|
/* Event notification descriptor */
|
|
event_code = MEC_NO_CHANGE;
|
|
if (media_status != MS_TRAY_OPEN && s->events.new_media) {
|
|
event_code = MEC_NEW_MEDIA;
|
|
s->events.new_media = false;
|
|
}
|
|
|
|
buf[4] = event_code;
|
|
buf[5] = media_status;
|
|
|
|
/* These fields are reserved, just clear them. */
|
|
buf[6] = 0;
|
|
buf[7] = 0;
|
|
|
|
return 8; /* We wrote to 4 extra bytes from the header */
|
|
}
|
|
|
|
static void cmd_get_event_status_notification(IDEState *s,
|
|
uint8_t *buf)
|
|
{
|
|
const uint8_t *packet = buf;
|
|
|
|
struct {
|
|
uint8_t opcode;
|
|
uint8_t polled; /* lsb bit is polled; others are reserved */
|
|
uint8_t reserved2[2];
|
|
uint8_t class;
|
|
uint8_t reserved3[2];
|
|
uint16_t len;
|
|
uint8_t control;
|
|
} QEMU_PACKED *gesn_cdb;
|
|
|
|
struct {
|
|
uint16_t len;
|
|
uint8_t notification_class;
|
|
uint8_t supported_events;
|
|
} QEMU_PACKED *gesn_event_header;
|
|
|
|
enum notification_class_request_type {
|
|
NCR_RESERVED1 = 1 << 0,
|
|
NCR_OPERATIONAL_CHANGE = 1 << 1,
|
|
NCR_POWER_MANAGEMENT = 1 << 2,
|
|
NCR_EXTERNAL_REQUEST = 1 << 3,
|
|
NCR_MEDIA = 1 << 4,
|
|
NCR_MULTI_HOST = 1 << 5,
|
|
NCR_DEVICE_BUSY = 1 << 6,
|
|
NCR_RESERVED2 = 1 << 7,
|
|
};
|
|
enum event_notification_class_field {
|
|
ENC_NO_EVENTS = 0,
|
|
ENC_OPERATIONAL_CHANGE,
|
|
ENC_POWER_MANAGEMENT,
|
|
ENC_EXTERNAL_REQUEST,
|
|
ENC_MEDIA,
|
|
ENC_MULTIPLE_HOSTS,
|
|
ENC_DEVICE_BUSY,
|
|
ENC_RESERVED,
|
|
};
|
|
unsigned int max_len, used_len;
|
|
|
|
gesn_cdb = (void *)packet;
|
|
gesn_event_header = (void *)buf;
|
|
|
|
max_len = be16_to_cpu(gesn_cdb->len);
|
|
|
|
/* It is fine by the MMC spec to not support async mode operations */
|
|
if (!(gesn_cdb->polled & 0x01)) { /* asynchronous mode */
|
|
/* Only polling is supported, asynchronous mode is not. */
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
|
|
ASC_INV_FIELD_IN_CMD_PACKET);
|
|
return;
|
|
}
|
|
|
|
/* polling mode operation */
|
|
|
|
/*
|
|
* These are the supported events.
|
|
*
|
|
* We currently only support requests of the 'media' type.
|
|
*/
|
|
gesn_event_header->supported_events = NCR_MEDIA;
|
|
|
|
/*
|
|
* We use |= below to set the class field; other bits in this byte
|
|
* are reserved now but this is useful to do if we have to use the
|
|
* reserved fields later.
|
|
*/
|
|
gesn_event_header->notification_class = 0;
|
|
|
|
/*
|
|
* Responses to requests are to be based on request priority. The
|
|
* notification_class_request_type enum above specifies the
|
|
* priority: upper elements are higher prio than lower ones.
|
|
*/
|
|
if (gesn_cdb->class & NCR_MEDIA) {
|
|
gesn_event_header->notification_class |= ENC_MEDIA;
|
|
used_len = event_status_media(s, buf);
|
|
} else {
|
|
gesn_event_header->notification_class = 0x80; /* No event available */
|
|
used_len = sizeof(*gesn_event_header);
|
|
}
|
|
gesn_event_header->len = cpu_to_be16(used_len
|
|
- sizeof(*gesn_event_header));
|
|
ide_atapi_cmd_reply(s, used_len, max_len);
|
|
}
|
|
|
|
static void cmd_request_sense(IDEState *s, uint8_t *buf)
|
|
{
|
|
int max_len = buf[4];
|
|
|
|
memset(buf, 0, 18);
|
|
buf[0] = 0x70 | (1 << 7);
|
|
buf[2] = s->sense_key;
|
|
buf[7] = 10;
|
|
buf[12] = s->asc;
|
|
|
|
if (s->sense_key == SENSE_UNIT_ATTENTION) {
|
|
s->sense_key = SENSE_NONE;
|
|
}
|
|
|
|
ide_atapi_cmd_reply(s, 18, max_len);
|
|
}
|
|
|
|
static void cmd_inquiry(IDEState *s, uint8_t *buf)
|
|
{
|
|
int max_len = buf[4];
|
|
|
|
buf[0] = 0x05; /* CD-ROM */
|
|
buf[1] = 0x80; /* removable */
|
|
buf[2] = 0x00; /* ISO */
|
|
buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
|
|
buf[4] = 31; /* additional length */
|
|
buf[5] = 0; /* reserved */
|
|
buf[6] = 0; /* reserved */
|
|
buf[7] = 0; /* reserved */
|
|
padstr8(buf + 8, 8, "QEMU");
|
|
padstr8(buf + 16, 16, "QEMU DVD-ROM");
|
|
padstr8(buf + 32, 4, s->version);
|
|
ide_atapi_cmd_reply(s, 36, max_len);
|
|
}
|
|
|
|
static void cmd_get_configuration(IDEState *s, uint8_t *buf)
|
|
{
|
|
uint32_t len;
|
|
uint8_t index = 0;
|
|
int max_len;
|
|
|
|
/* only feature 0 is supported */
|
|
if (buf[2] != 0 || buf[3] != 0) {
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
|
|
ASC_INV_FIELD_IN_CMD_PACKET);
|
|
return;
|
|
}
|
|
|
|
/* XXX: could result in alignment problems in some architectures */
|
|
max_len = ube16_to_cpu(buf + 7);
|
|
|
|
/*
|
|
* XXX: avoid overflow for io_buffer if max_len is bigger than
|
|
* the size of that buffer (dimensioned to max number of
|
|
* sectors to transfer at once)
|
|
*
|
|
* Only a problem if the feature/profiles grow.
|
|
*/
|
|
if (max_len > 512) {
|
|
/* XXX: assume 1 sector */
|
|
max_len = 512;
|
|
}
|
|
|
|
memset(buf, 0, max_len);
|
|
/*
|
|
* the number of sectors from the media tells us which profile
|
|
* to use as current. 0 means there is no media
|
|
*/
|
|
if (media_is_dvd(s)) {
|
|
cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM);
|
|
} else if (media_is_cd(s)) {
|
|
cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM);
|
|
}
|
|
|
|
buf[10] = 0x02 | 0x01; /* persistent and current */
|
|
len = 12; /* headers: 8 + 4 */
|
|
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM);
|
|
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM);
|
|
cpu_to_ube32(buf, len - 4); /* data length */
|
|
|
|
ide_atapi_cmd_reply(s, len, max_len);
|
|
}
|
|
|
|
static void cmd_mode_sense(IDEState *s, uint8_t *buf)
|
|
{
|
|
int action, code;
|
|
int max_len;
|
|
|
|
if (buf[0] == GPCMD_MODE_SENSE_10) {
|
|
max_len = ube16_to_cpu(buf + 7);
|
|
} else {
|
|
max_len = buf[4];
|
|
}
|
|
|
|
action = buf[2] >> 6;
|
|
code = buf[2] & 0x3f;
|
|
|
|
switch(action) {
|
|
case 0: /* current values */
|
|
switch(code) {
|
|
case GPMODE_R_W_ERROR_PAGE: /* error recovery */
|
|
cpu_to_ube16(&buf[0], 16 + 6);
|
|
buf[2] = 0x70;
|
|
buf[3] = 0;
|
|
buf[4] = 0;
|
|
buf[5] = 0;
|
|
buf[6] = 0;
|
|
buf[7] = 0;
|
|
|
|
buf[8] = 0x01;
|
|
buf[9] = 0x06;
|
|
buf[10] = 0x00;
|
|
buf[11] = 0x05;
|
|
buf[12] = 0x00;
|
|
buf[13] = 0x00;
|
|
buf[14] = 0x00;
|
|
buf[15] = 0x00;
|
|
ide_atapi_cmd_reply(s, 16, max_len);
|
|
break;
|
|
case GPMODE_AUDIO_CTL_PAGE:
|
|
cpu_to_ube16(&buf[0], 24 + 6);
|
|
buf[2] = 0x70;
|
|
buf[3] = 0;
|
|
buf[4] = 0;
|
|
buf[5] = 0;
|
|
buf[6] = 0;
|
|
buf[7] = 0;
|
|
|
|
/* Fill with CDROM audio volume */
|
|
buf[17] = 0;
|
|
buf[19] = 0;
|
|
buf[21] = 0;
|
|
buf[23] = 0;
|
|
|
|
ide_atapi_cmd_reply(s, 24, max_len);
|
|
break;
|
|
case GPMODE_CAPABILITIES_PAGE:
|
|
cpu_to_ube16(&buf[0], 28 + 6);
|
|
buf[2] = 0x70;
|
|
buf[3] = 0;
|
|
buf[4] = 0;
|
|
buf[5] = 0;
|
|
buf[6] = 0;
|
|
buf[7] = 0;
|
|
|
|
buf[8] = 0x2a;
|
|
buf[9] = 0x12;
|
|
buf[10] = 0x00;
|
|
buf[11] = 0x00;
|
|
|
|
/* Claim PLAY_AUDIO capability (0x01) since some Linux
|
|
code checks for this to automount media. */
|
|
buf[12] = 0x71;
|
|
buf[13] = 3 << 5;
|
|
buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
|
|
if (s->tray_locked) {
|
|
buf[6] |= 1 << 1;
|
|
}
|
|
buf[15] = 0x00;
|
|
cpu_to_ube16(&buf[16], 706);
|
|
buf[18] = 0;
|
|
buf[19] = 2;
|
|
cpu_to_ube16(&buf[20], 512);
|
|
cpu_to_ube16(&buf[22], 706);
|
|
buf[24] = 0;
|
|
buf[25] = 0;
|
|
buf[26] = 0;
|
|
buf[27] = 0;
|
|
ide_atapi_cmd_reply(s, 28, max_len);
|
|
break;
|
|
default:
|
|
goto error_cmd;
|
|
}
|
|
break;
|
|
case 1: /* changeable values */
|
|
goto error_cmd;
|
|
case 2: /* default values */
|
|
goto error_cmd;
|
|
default:
|
|
case 3: /* saved values */
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
|
|
ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
|
|
break;
|
|
}
|
|
return;
|
|
|
|
error_cmd:
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
|
|
}
|
|
|
|
static void cmd_test_unit_ready(IDEState *s, uint8_t *buf)
|
|
{
|
|
/* Not Ready Conditions are already handled in ide_atapi_cmd(), so if we
|
|
* come here, we know that it's ready. */
|
|
ide_atapi_cmd_ok(s);
|
|
}
|
|
|
|
static void cmd_prevent_allow_medium_removal(IDEState *s, uint8_t* buf)
|
|
{
|
|
s->tray_locked = buf[4] & 1;
|
|
bdrv_set_locked(s->bs, buf[4] & 1);
|
|
ide_atapi_cmd_ok(s);
|
|
}
|
|
|
|
static void cmd_read(IDEState *s, uint8_t* buf)
|
|
{
|
|
int nb_sectors, lba;
|
|
|
|
if (buf[0] == GPCMD_READ_10) {
|
|
nb_sectors = ube16_to_cpu(buf + 7);
|
|
} else {
|
|
nb_sectors = ube32_to_cpu(buf + 6);
|
|
}
|
|
|
|
lba = ube32_to_cpu(buf + 2);
|
|
if (nb_sectors == 0) {
|
|
ide_atapi_cmd_ok(s);
|
|
return;
|
|
}
|
|
|
|
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
|
|
}
|
|
|
|
static void cmd_read_cd(IDEState *s, uint8_t* buf)
|
|
{
|
|
int nb_sectors, lba, transfer_request;
|
|
|
|
nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8];
|
|
lba = ube32_to_cpu(buf + 2);
|
|
|
|
if (nb_sectors == 0) {
|
|
ide_atapi_cmd_ok(s);
|
|
return;
|
|
}
|
|
|
|
transfer_request = buf[9];
|
|
switch(transfer_request & 0xf8) {
|
|
case 0x00:
|
|
/* nothing */
|
|
ide_atapi_cmd_ok(s);
|
|
break;
|
|
case 0x10:
|
|
/* normal read */
|
|
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
|
|
break;
|
|
case 0xf8:
|
|
/* read all data */
|
|
ide_atapi_cmd_read(s, lba, nb_sectors, 2352);
|
|
break;
|
|
default:
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
|
|
ASC_INV_FIELD_IN_CMD_PACKET);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void cmd_seek(IDEState *s, uint8_t* buf)
|
|
{
|
|
unsigned int lba;
|
|
uint64_t total_sectors = s->nb_sectors >> 2;
|
|
|
|
lba = ube32_to_cpu(buf + 2);
|
|
if (lba >= total_sectors) {
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
|
|
return;
|
|
}
|
|
|
|
ide_atapi_cmd_ok(s);
|
|
}
|
|
|
|
static void cmd_start_stop_unit(IDEState *s, uint8_t* buf)
|
|
{
|
|
int sense, err = 0;
|
|
bool start = buf[4] & 1;
|
|
bool loej = buf[4] & 2; /* load on start, eject on !start */
|
|
|
|
if (loej) {
|
|
err = bdrv_eject(s->bs, !start);
|
|
}
|
|
|
|
switch (err) {
|
|
case 0:
|
|
ide_atapi_cmd_ok(s);
|
|
break;
|
|
case -EBUSY:
|
|
sense = SENSE_NOT_READY;
|
|
if (bdrv_is_inserted(s->bs)) {
|
|
sense = SENSE_ILLEGAL_REQUEST;
|
|
}
|
|
ide_atapi_cmd_error(s, sense, ASC_MEDIA_REMOVAL_PREVENTED);
|
|
break;
|
|
default:
|
|
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
|
|
break;
|
|
}
|
|
|
|
if (loej && !err) {
|
|
s->tray_open = !start;
|
|
}
|
|
}
|
|
|
|
static void cmd_mechanism_status(IDEState *s, uint8_t* buf)
|
|
{
|
|
int max_len = ube16_to_cpu(buf + 8);
|
|
|
|
cpu_to_ube16(buf, 0);
|
|
/* no current LBA */
|
|
buf[2] = 0;
|
|
buf[3] = 0;
|
|
buf[4] = 0;
|
|
buf[5] = 1;
|
|
cpu_to_ube16(buf + 6, 0);
|
|
ide_atapi_cmd_reply(s, 8, max_len);
|
|
}
|
|
|
|
static void cmd_read_toc_pma_atip(IDEState *s, uint8_t* buf)
|
|
{
|
|
int format, msf, start_track, len;
|
|
int max_len;
|
|
uint64_t total_sectors = s->nb_sectors >> 2;
|
|
|
|
max_len = ube16_to_cpu(buf + 7);
|
|
format = buf[9] >> 6;
|
|
msf = (buf[1] >> 1) & 1;
|
|
start_track = buf[6];
|
|
|
|
switch(format) {
|
|
case 0:
|
|
len = cdrom_read_toc(total_sectors, buf, msf, start_track);
|
|
if (len < 0)
|
|
goto error_cmd;
|
|
ide_atapi_cmd_reply(s, len, max_len);
|
|
break;
|
|
case 1:
|
|
/* multi session : only a single session defined */
|
|
memset(buf, 0, 12);
|
|
buf[1] = 0x0a;
|
|
buf[2] = 0x01;
|
|
buf[3] = 0x01;
|
|
ide_atapi_cmd_reply(s, 12, max_len);
|
|
break;
|
|
case 2:
|
|
len = cdrom_read_toc_raw(total_sectors, buf, msf, start_track);
|
|
if (len < 0)
|
|
goto error_cmd;
|
|
ide_atapi_cmd_reply(s, len, max_len);
|
|
break;
|
|
default:
|
|
error_cmd:
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
|
|
ASC_INV_FIELD_IN_CMD_PACKET);
|
|
}
|
|
}
|
|
|
|
static void cmd_read_cdvd_capacity(IDEState *s, uint8_t* buf)
|
|
{
|
|
uint64_t total_sectors = s->nb_sectors >> 2;
|
|
|
|
/* NOTE: it is really the number of sectors minus 1 */
|
|
cpu_to_ube32(buf, total_sectors - 1);
|
|
cpu_to_ube32(buf + 4, 2048);
|
|
ide_atapi_cmd_reply(s, 8, 8);
|
|
}
|
|
|
|
static void cmd_read_dvd_structure(IDEState *s, uint8_t* buf)
|
|
{
|
|
int max_len;
|
|
int media = buf[1];
|
|
int format = buf[7];
|
|
int ret;
|
|
|
|
max_len = ube16_to_cpu(buf + 8);
|
|
|
|
if (format < 0xff) {
|
|
if (media_is_cd(s)) {
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
|
|
ASC_INCOMPATIBLE_FORMAT);
|
|
return;
|
|
} else if (!media_present(s)) {
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
|
|
ASC_INV_FIELD_IN_CMD_PACKET);
|
|
return;
|
|
}
|
|
}
|
|
|
|
memset(buf, 0, max_len > IDE_DMA_BUF_SECTORS * 512 + 4 ?
|
|
IDE_DMA_BUF_SECTORS * 512 + 4 : max_len);
|
|
|
|
switch (format) {
|
|
case 0x00 ... 0x7f:
|
|
case 0xff:
|
|
if (media == 0) {
|
|
ret = ide_dvd_read_structure(s, format, buf, buf);
|
|
|
|
if (ret < 0) {
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, -ret);
|
|
} else {
|
|
ide_atapi_cmd_reply(s, ret, max_len);
|
|
}
|
|
|
|
break;
|
|
}
|
|
/* TODO: BD support, fall through for now */
|
|
|
|
/* Generic disk structures */
|
|
case 0x80: /* TODO: AACS volume identifier */
|
|
case 0x81: /* TODO: AACS media serial number */
|
|
case 0x82: /* TODO: AACS media identifier */
|
|
case 0x83: /* TODO: AACS media key block */
|
|
case 0x90: /* TODO: List of recognized format layers */
|
|
case 0xc0: /* TODO: Write protection status */
|
|
default:
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
|
|
ASC_INV_FIELD_IN_CMD_PACKET);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void cmd_set_speed(IDEState *s, uint8_t* buf)
|
|
{
|
|
ide_atapi_cmd_ok(s);
|
|
}
|
|
|
|
enum {
|
|
/*
|
|
* Only commands flagged as ALLOW_UA are allowed to run under a
|
|
* unit attention condition. (See MMC-5, section 4.1.6.1)
|
|
*/
|
|
ALLOW_UA = 0x01,
|
|
|
|
/*
|
|
* Commands flagged with CHECK_READY can only execute if a medium is present.
|
|
* Otherwise they report the Not Ready Condition. (See MMC-5, section
|
|
* 4.1.8)
|
|
*/
|
|
CHECK_READY = 0x02,
|
|
};
|
|
|
|
static const struct {
|
|
void (*handler)(IDEState *s, uint8_t *buf);
|
|
int flags;
|
|
} atapi_cmd_table[0x100] = {
|
|
[ 0x00 ] = { cmd_test_unit_ready, CHECK_READY },
|
|
[ 0x03 ] = { cmd_request_sense, ALLOW_UA },
|
|
[ 0x12 ] = { cmd_inquiry, ALLOW_UA },
|
|
[ 0x1a ] = { cmd_mode_sense, /* (6) */ 0 },
|
|
[ 0x1b ] = { cmd_start_stop_unit, 0 }, /* [1] */
|
|
[ 0x1e ] = { cmd_prevent_allow_medium_removal, 0 },
|
|
[ 0x25 ] = { cmd_read_cdvd_capacity, CHECK_READY },
|
|
[ 0x28 ] = { cmd_read, /* (10) */ CHECK_READY },
|
|
[ 0x2b ] = { cmd_seek, CHECK_READY },
|
|
[ 0x43 ] = { cmd_read_toc_pma_atip, CHECK_READY },
|
|
[ 0x46 ] = { cmd_get_configuration, ALLOW_UA },
|
|
[ 0x4a ] = { cmd_get_event_status_notification, ALLOW_UA },
|
|
[ 0x5a ] = { cmd_mode_sense, /* (10) */ 0 },
|
|
[ 0xa8 ] = { cmd_read, /* (12) */ CHECK_READY },
|
|
[ 0xad ] = { cmd_read_dvd_structure, CHECK_READY },
|
|
[ 0xbb ] = { cmd_set_speed, 0 },
|
|
[ 0xbd ] = { cmd_mechanism_status, 0 },
|
|
[ 0xbe ] = { cmd_read_cd, CHECK_READY },
|
|
/* [1] handler detects and reports not ready condition itself */
|
|
};
|
|
|
|
void ide_atapi_cmd(IDEState *s)
|
|
{
|
|
uint8_t *buf;
|
|
|
|
buf = s->io_buffer;
|
|
#ifdef DEBUG_IDE_ATAPI
|
|
{
|
|
int i;
|
|
printf("ATAPI limit=0x%x packet:", s->lcyl | (s->hcyl << 8));
|
|
for(i = 0; i < ATAPI_PACKET_SIZE; i++) {
|
|
printf(" %02x", buf[i]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
/*
|
|
* If there's a UNIT_ATTENTION condition pending, only command flagged with
|
|
* ALLOW_UA are allowed to complete. with other commands getting a CHECK
|
|
* condition response unless a higher priority status, defined by the drive
|
|
* here, is pending.
|
|
*/
|
|
if (s->sense_key == SENSE_UNIT_ATTENTION &&
|
|
!(atapi_cmd_table[s->io_buffer[0]].flags & ALLOW_UA)) {
|
|
ide_atapi_cmd_check_status(s);
|
|
return;
|
|
}
|
|
/*
|
|
* When a CD gets changed, we have to report an ejected state and
|
|
* then a loaded state to guests so that they detect tray
|
|
* open/close and media change events. Guests that do not use
|
|
* GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
|
|
* states rely on this behavior.
|
|
*/
|
|
if (!s->tray_open && bdrv_is_inserted(s->bs) && s->cdrom_changed) {
|
|
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
|
|
|
|
s->cdrom_changed = 0;
|
|
s->sense_key = SENSE_UNIT_ATTENTION;
|
|
s->asc = ASC_MEDIUM_MAY_HAVE_CHANGED;
|
|
return;
|
|
}
|
|
|
|
/* Report a Not Ready condition if appropriate for the command */
|
|
if ((atapi_cmd_table[s->io_buffer[0]].flags & CHECK_READY) &&
|
|
(!media_present(s) || !bdrv_is_inserted(s->bs)))
|
|
{
|
|
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
|
|
return;
|
|
}
|
|
|
|
/* Execute the command */
|
|
if (atapi_cmd_table[s->io_buffer[0]].handler) {
|
|
atapi_cmd_table[s->io_buffer[0]].handler(s, buf);
|
|
return;
|
|
}
|
|
|
|
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, ASC_ILLEGAL_OPCODE);
|
|
}
|