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/*
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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/scsi.h" |
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static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret); |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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, NOT_READY, |
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ASC_MEDIUM_NOT_PRESENT); |
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} else {
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ide_atapi_cmd_error(s, 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++; |
194 |
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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|
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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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|
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if (s->atapi_dma) {
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bdrv_acct_start(s->bs, &s->acct, size, BDRV_ACCT_READ); |
257 |
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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|
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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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|
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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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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 | (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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|
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/* XXX: handle read errors */
|
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static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret) |
294 |
{ |
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IDEState *s = opaque; |
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int data_offset, n;
|
297 |
|
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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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} |
302 |
|
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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) { |
312 |
if (s->cd_sector_size == 2352) { |
313 |
n = 1;
|
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cd_data_to_raw(s->io_buffer, s->lba); |
315 |
} else {
|
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n = s->io_buffer_size >> 11;
|
317 |
} |
318 |
s->lba += n; |
319 |
} |
320 |
s->packet_transfer_size -= s->io_buffer_size; |
321 |
if (s->bus->dma->ops->rw_buf(s->bus->dma, 1) == 0) |
322 |
goto eot;
|
323 |
} |
324 |
|
325 |
if (s->packet_transfer_size <= 0) { |
326 |
s->status = READY_STAT | SEEK_STAT; |
327 |
s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
|
328 |
ide_set_irq(s->bus); |
329 |
goto eot;
|
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} |
331 |
|
332 |
s->io_buffer_index = 0;
|
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if (s->cd_sector_size == 2352) { |
334 |
n = 1;
|
335 |
s->io_buffer_size = s->cd_sector_size; |
336 |
data_offset = 16;
|
337 |
} else {
|
338 |
n = s->packet_transfer_size >> 11;
|
339 |
if (n > (IDE_DMA_BUF_SECTORS / 4)) |
340 |
n = (IDE_DMA_BUF_SECTORS / 4);
|
341 |
s->io_buffer_size = n * 2048;
|
342 |
data_offset = 0;
|
343 |
} |
344 |
#ifdef DEBUG_AIO
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345 |
printf("aio_read_cd: lba=%u n=%d\n", s->lba, n);
|
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#endif
|
347 |
|
348 |
s->bus->dma->iov.iov_base = (void *)(s->io_buffer + data_offset);
|
349 |
s->bus->dma->iov.iov_len = n * 4 * 512; |
350 |
qemu_iovec_init_external(&s->bus->dma->qiov, &s->bus->dma->iov, 1);
|
351 |
|
352 |
s->bus->dma->aiocb = bdrv_aio_readv(s->bs, (int64_t)s->lba << 2,
|
353 |
&s->bus->dma->qiov, n * 4,
|
354 |
ide_atapi_cmd_read_dma_cb, s); |
355 |
return;
|
356 |
|
357 |
eot:
|
358 |
bdrv_acct_done(s->bs, &s->acct); |
359 |
s->bus->dma->ops->add_status(s->bus->dma, BM_STATUS_INT); |
360 |
ide_set_inactive(s); |
361 |
} |
362 |
|
363 |
/* start a CD-CDROM read command with DMA */
|
364 |
/* XXX: test if DMA is available */
|
365 |
static void ide_atapi_cmd_read_dma(IDEState *s, int lba, int nb_sectors, |
366 |
int sector_size)
|
367 |
{ |
368 |
s->lba = lba; |
369 |
s->packet_transfer_size = nb_sectors * sector_size; |
370 |
s->io_buffer_index = 0;
|
371 |
s->io_buffer_size = 0;
|
372 |
s->cd_sector_size = sector_size; |
373 |
|
374 |
bdrv_acct_start(s->bs, &s->acct, s->packet_transfer_size, BDRV_ACCT_READ); |
375 |
|
376 |
/* XXX: check if BUSY_STAT should be set */
|
377 |
s->status = READY_STAT | SEEK_STAT | DRQ_STAT | BUSY_STAT; |
378 |
s->bus->dma->ops->start_dma(s->bus->dma, s, |
379 |
ide_atapi_cmd_read_dma_cb); |
380 |
} |
381 |
|
382 |
static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors, |
383 |
int sector_size)
|
384 |
{ |
385 |
#ifdef DEBUG_IDE_ATAPI
|
386 |
printf("read %s: LBA=%d nb_sectors=%d\n", s->atapi_dma ? "dma" : "pio", |
387 |
lba, nb_sectors); |
388 |
#endif
|
389 |
if (s->atapi_dma) {
|
390 |
ide_atapi_cmd_read_dma(s, lba, nb_sectors, sector_size); |
391 |
} else {
|
392 |
ide_atapi_cmd_read_pio(s, lba, nb_sectors, sector_size); |
393 |
} |
394 |
} |
395 |
|
396 |
static inline uint8_t ide_atapi_set_profile(uint8_t *buf, uint8_t *index, |
397 |
uint16_t profile) |
398 |
{ |
399 |
uint8_t *buf_profile = buf + 12; /* start of profiles */ |
400 |
|
401 |
buf_profile += ((*index) * 4); /* start of indexed profile */ |
402 |
cpu_to_ube16 (buf_profile, profile); |
403 |
buf_profile[2] = ((buf_profile[0] == buf[6]) && (buf_profile[1] == buf[7])); |
404 |
|
405 |
/* each profile adds 4 bytes to the response */
|
406 |
(*index)++; |
407 |
buf[11] += 4; /* Additional Length */ |
408 |
|
409 |
return 4; |
410 |
} |
411 |
|
412 |
static int ide_dvd_read_structure(IDEState *s, int format, |
413 |
const uint8_t *packet, uint8_t *buf)
|
414 |
{ |
415 |
switch (format) {
|
416 |
case 0x0: /* Physical format information */ |
417 |
{ |
418 |
int layer = packet[6]; |
419 |
uint64_t total_sectors; |
420 |
|
421 |
if (layer != 0) |
422 |
return -ASC_INV_FIELD_IN_CMD_PACKET;
|
423 |
|
424 |
total_sectors = s->nb_sectors >> 2;
|
425 |
if (total_sectors == 0) { |
426 |
return -ASC_MEDIUM_NOT_PRESENT;
|
427 |
} |
428 |
|
429 |
buf[4] = 1; /* DVD-ROM, part version 1 */ |
430 |
buf[5] = 0xf; /* 120mm disc, minimum rate unspecified */ |
431 |
buf[6] = 1; /* one layer, read-only (per MMC-2 spec) */ |
432 |
buf[7] = 0; /* default densities */ |
433 |
|
434 |
/* FIXME: 0x30000 per spec? */
|
435 |
cpu_to_ube32(buf + 8, 0); /* start sector */ |
436 |
cpu_to_ube32(buf + 12, total_sectors - 1); /* end sector */ |
437 |
cpu_to_ube32(buf + 16, total_sectors - 1); /* l0 end sector */ |
438 |
|
439 |
/* Size of buffer, not including 2 byte size field */
|
440 |
cpu_to_be16wu((uint16_t *)buf, 2048 + 2); |
441 |
|
442 |
/* 2k data + 4 byte header */
|
443 |
return (2048 + 4); |
444 |
} |
445 |
|
446 |
case 0x01: /* DVD copyright information */ |
447 |
buf[4] = 0; /* no copyright data */ |
448 |
buf[5] = 0; /* no region restrictions */ |
449 |
|
450 |
/* Size of buffer, not including 2 byte size field */
|
451 |
cpu_to_be16wu((uint16_t *)buf, 4 + 2); |
452 |
|
453 |
/* 4 byte header + 4 byte data */
|
454 |
return (4 + 4); |
455 |
|
456 |
case 0x03: /* BCA information - invalid field for no BCA info */ |
457 |
return -ASC_INV_FIELD_IN_CMD_PACKET;
|
458 |
|
459 |
case 0x04: /* DVD disc manufacturing information */ |
460 |
/* Size of buffer, not including 2 byte size field */
|
461 |
cpu_to_be16wu((uint16_t *)buf, 2048 + 2); |
462 |
|
463 |
/* 2k data + 4 byte header */
|
464 |
return (2048 + 4); |
465 |
|
466 |
case 0xff: |
467 |
/*
|
468 |
* This lists all the command capabilities above. Add new ones
|
469 |
* in order and update the length and buffer return values.
|
470 |
*/
|
471 |
|
472 |
buf[4] = 0x00; /* Physical format */ |
473 |
buf[5] = 0x40; /* Not writable, is readable */ |
474 |
cpu_to_be16wu((uint16_t *)(buf + 6), 2048 + 4); |
475 |
|
476 |
buf[8] = 0x01; /* Copyright info */ |
477 |
buf[9] = 0x40; /* Not writable, is readable */ |
478 |
cpu_to_be16wu((uint16_t *)(buf + 10), 4 + 4); |
479 |
|
480 |
buf[12] = 0x03; /* BCA info */ |
481 |
buf[13] = 0x40; /* Not writable, is readable */ |
482 |
cpu_to_be16wu((uint16_t *)(buf + 14), 188 + 4); |
483 |
|
484 |
buf[16] = 0x04; /* Manufacturing info */ |
485 |
buf[17] = 0x40; /* Not writable, is readable */ |
486 |
cpu_to_be16wu((uint16_t *)(buf + 18), 2048 + 4); |
487 |
|
488 |
/* Size of buffer, not including 2 byte size field */
|
489 |
cpu_to_be16wu((uint16_t *)buf, 16 + 2); |
490 |
|
491 |
/* data written + 4 byte header */
|
492 |
return (16 + 4); |
493 |
|
494 |
default: /* TODO: formats beyond DVD-ROM requires */ |
495 |
return -ASC_INV_FIELD_IN_CMD_PACKET;
|
496 |
} |
497 |
} |
498 |
|
499 |
static unsigned int event_status_media(IDEState *s, |
500 |
uint8_t *buf) |
501 |
{ |
502 |
uint8_t event_code, media_status; |
503 |
|
504 |
media_status = 0;
|
505 |
if (s->tray_open) {
|
506 |
media_status = MS_TRAY_OPEN; |
507 |
} else if (bdrv_is_inserted(s->bs)) { |
508 |
media_status = MS_MEDIA_PRESENT; |
509 |
} |
510 |
|
511 |
/* Event notification descriptor */
|
512 |
event_code = MEC_NO_CHANGE; |
513 |
if (media_status != MS_TRAY_OPEN) {
|
514 |
if (s->events.new_media) {
|
515 |
event_code = MEC_NEW_MEDIA; |
516 |
s->events.new_media = false;
|
517 |
} else if (s->events.eject_request) { |
518 |
event_code = MEC_EJECT_REQUESTED; |
519 |
s->events.eject_request = false;
|
520 |
} |
521 |
} |
522 |
|
523 |
buf[4] = event_code;
|
524 |
buf[5] = media_status;
|
525 |
|
526 |
/* These fields are reserved, just clear them. */
|
527 |
buf[6] = 0; |
528 |
buf[7] = 0; |
529 |
|
530 |
return 8; /* We wrote to 4 extra bytes from the header */ |
531 |
} |
532 |
|
533 |
static void cmd_get_event_status_notification(IDEState *s, |
534 |
uint8_t *buf) |
535 |
{ |
536 |
const uint8_t *packet = buf;
|
537 |
|
538 |
struct {
|
539 |
uint8_t opcode; |
540 |
uint8_t polled; /* lsb bit is polled; others are reserved */
|
541 |
uint8_t reserved2[2];
|
542 |
uint8_t class; |
543 |
uint8_t reserved3[2];
|
544 |
uint16_t len; |
545 |
uint8_t control; |
546 |
} QEMU_PACKED *gesn_cdb; |
547 |
|
548 |
struct {
|
549 |
uint16_t len; |
550 |
uint8_t notification_class; |
551 |
uint8_t supported_events; |
552 |
} QEMU_PACKED *gesn_event_header; |
553 |
unsigned int max_len, used_len; |
554 |
|
555 |
gesn_cdb = (void *)packet;
|
556 |
gesn_event_header = (void *)buf;
|
557 |
|
558 |
max_len = be16_to_cpu(gesn_cdb->len); |
559 |
|
560 |
/* It is fine by the MMC spec to not support async mode operations */
|
561 |
if (!(gesn_cdb->polled & 0x01)) { /* asynchronous mode */ |
562 |
/* Only polling is supported, asynchronous mode is not. */
|
563 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, |
564 |
ASC_INV_FIELD_IN_CMD_PACKET); |
565 |
return;
|
566 |
} |
567 |
|
568 |
/* polling mode operation */
|
569 |
|
570 |
/*
|
571 |
* These are the supported events.
|
572 |
*
|
573 |
* We currently only support requests of the 'media' type.
|
574 |
* Notification class requests and supported event classes are bitmasks,
|
575 |
* but they are build from the same values as the "notification class"
|
576 |
* field.
|
577 |
*/
|
578 |
gesn_event_header->supported_events = 1 << GESN_MEDIA;
|
579 |
|
580 |
/*
|
581 |
* We use |= below to set the class field; other bits in this byte
|
582 |
* are reserved now but this is useful to do if we have to use the
|
583 |
* reserved fields later.
|
584 |
*/
|
585 |
gesn_event_header->notification_class = 0;
|
586 |
|
587 |
/*
|
588 |
* Responses to requests are to be based on request priority. The
|
589 |
* notification_class_request_type enum above specifies the
|
590 |
* priority: upper elements are higher prio than lower ones.
|
591 |
*/
|
592 |
if (gesn_cdb->class & (1 << GESN_MEDIA)) { |
593 |
gesn_event_header->notification_class |= GESN_MEDIA; |
594 |
used_len = event_status_media(s, buf); |
595 |
} else {
|
596 |
gesn_event_header->notification_class = 0x80; /* No event available */ |
597 |
used_len = sizeof(*gesn_event_header);
|
598 |
} |
599 |
gesn_event_header->len = cpu_to_be16(used_len |
600 |
- sizeof(*gesn_event_header));
|
601 |
ide_atapi_cmd_reply(s, used_len, max_len); |
602 |
} |
603 |
|
604 |
static void cmd_request_sense(IDEState *s, uint8_t *buf) |
605 |
{ |
606 |
int max_len = buf[4]; |
607 |
|
608 |
memset(buf, 0, 18); |
609 |
buf[0] = 0x70 | (1 << 7); |
610 |
buf[2] = s->sense_key;
|
611 |
buf[7] = 10; |
612 |
buf[12] = s->asc;
|
613 |
|
614 |
if (s->sense_key == UNIT_ATTENTION) {
|
615 |
s->sense_key = NO_SENSE; |
616 |
} |
617 |
|
618 |
ide_atapi_cmd_reply(s, 18, max_len);
|
619 |
} |
620 |
|
621 |
static void cmd_inquiry(IDEState *s, uint8_t *buf) |
622 |
{ |
623 |
int max_len = buf[4]; |
624 |
|
625 |
buf[0] = 0x05; /* CD-ROM */ |
626 |
buf[1] = 0x80; /* removable */ |
627 |
buf[2] = 0x00; /* ISO */ |
628 |
buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */ |
629 |
buf[4] = 31; /* additional length */ |
630 |
buf[5] = 0; /* reserved */ |
631 |
buf[6] = 0; /* reserved */ |
632 |
buf[7] = 0; /* reserved */ |
633 |
padstr8(buf + 8, 8, "QEMU"); |
634 |
padstr8(buf + 16, 16, "QEMU DVD-ROM"); |
635 |
padstr8(buf + 32, 4, s->version); |
636 |
ide_atapi_cmd_reply(s, 36, max_len);
|
637 |
} |
638 |
|
639 |
static void cmd_get_configuration(IDEState *s, uint8_t *buf) |
640 |
{ |
641 |
uint32_t len; |
642 |
uint8_t index = 0;
|
643 |
int max_len;
|
644 |
|
645 |
/* only feature 0 is supported */
|
646 |
if (buf[2] != 0 || buf[3] != 0) { |
647 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, |
648 |
ASC_INV_FIELD_IN_CMD_PACKET); |
649 |
return;
|
650 |
} |
651 |
|
652 |
/* XXX: could result in alignment problems in some architectures */
|
653 |
max_len = ube16_to_cpu(buf + 7);
|
654 |
|
655 |
/*
|
656 |
* XXX: avoid overflow for io_buffer if max_len is bigger than
|
657 |
* the size of that buffer (dimensioned to max number of
|
658 |
* sectors to transfer at once)
|
659 |
*
|
660 |
* Only a problem if the feature/profiles grow.
|
661 |
*/
|
662 |
if (max_len > 512) { |
663 |
/* XXX: assume 1 sector */
|
664 |
max_len = 512;
|
665 |
} |
666 |
|
667 |
memset(buf, 0, max_len);
|
668 |
/*
|
669 |
* the number of sectors from the media tells us which profile
|
670 |
* to use as current. 0 means there is no media
|
671 |
*/
|
672 |
if (media_is_dvd(s)) {
|
673 |
cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM);
|
674 |
} else if (media_is_cd(s)) { |
675 |
cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM);
|
676 |
} |
677 |
|
678 |
buf[10] = 0x02 | 0x01; /* persistent and current */ |
679 |
len = 12; /* headers: 8 + 4 */ |
680 |
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM); |
681 |
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM); |
682 |
cpu_to_ube32(buf, len - 4); /* data length */ |
683 |
|
684 |
ide_atapi_cmd_reply(s, len, max_len); |
685 |
} |
686 |
|
687 |
static void cmd_mode_sense(IDEState *s, uint8_t *buf) |
688 |
{ |
689 |
int action, code;
|
690 |
int max_len;
|
691 |
|
692 |
max_len = ube16_to_cpu(buf + 7);
|
693 |
action = buf[2] >> 6; |
694 |
code = buf[2] & 0x3f; |
695 |
|
696 |
switch(action) {
|
697 |
case 0: /* current values */ |
698 |
switch(code) {
|
699 |
case MODE_PAGE_R_W_ERROR: /* error recovery */ |
700 |
cpu_to_ube16(&buf[0], 16 - 2); |
701 |
buf[2] = 0x70; |
702 |
buf[3] = 0; |
703 |
buf[4] = 0; |
704 |
buf[5] = 0; |
705 |
buf[6] = 0; |
706 |
buf[7] = 0; |
707 |
|
708 |
buf[8] = MODE_PAGE_R_W_ERROR;
|
709 |
buf[9] = 16 - 10; |
710 |
buf[10] = 0x00; |
711 |
buf[11] = 0x05; |
712 |
buf[12] = 0x00; |
713 |
buf[13] = 0x00; |
714 |
buf[14] = 0x00; |
715 |
buf[15] = 0x00; |
716 |
ide_atapi_cmd_reply(s, 16, max_len);
|
717 |
break;
|
718 |
case MODE_PAGE_AUDIO_CTL:
|
719 |
cpu_to_ube16(&buf[0], 24 - 2); |
720 |
buf[2] = 0x70; |
721 |
buf[3] = 0; |
722 |
buf[4] = 0; |
723 |
buf[5] = 0; |
724 |
buf[6] = 0; |
725 |
buf[7] = 0; |
726 |
|
727 |
buf[8] = MODE_PAGE_AUDIO_CTL;
|
728 |
buf[9] = 24 - 10; |
729 |
/* Fill with CDROM audio volume */
|
730 |
buf[17] = 0; |
731 |
buf[19] = 0; |
732 |
buf[21] = 0; |
733 |
buf[23] = 0; |
734 |
|
735 |
ide_atapi_cmd_reply(s, 24, max_len);
|
736 |
break;
|
737 |
case MODE_PAGE_CAPABILITIES:
|
738 |
cpu_to_ube16(&buf[0], 30 - 2); |
739 |
buf[2] = 0x70; |
740 |
buf[3] = 0; |
741 |
buf[4] = 0; |
742 |
buf[5] = 0; |
743 |
buf[6] = 0; |
744 |
buf[7] = 0; |
745 |
|
746 |
buf[8] = MODE_PAGE_CAPABILITIES;
|
747 |
buf[9] = 30 - 10; |
748 |
buf[10] = 0x3b; /* read CDR/CDRW/DVDROM/DVDR/DVDRAM */ |
749 |
buf[11] = 0x00; |
750 |
|
751 |
/* Claim PLAY_AUDIO capability (0x01) since some Linux
|
752 |
code checks for this to automount media. */
|
753 |
buf[12] = 0x71; |
754 |
buf[13] = 3 << 5; |
755 |
buf[14] = (1 << 0) | (1 << 3) | (1 << 5); |
756 |
if (s->tray_locked) {
|
757 |
buf[14] |= 1 << 1; |
758 |
} |
759 |
buf[15] = 0x00; /* No volume & mute control, no changer */ |
760 |
cpu_to_ube16(&buf[16], 704); /* 4x read speed */ |
761 |
buf[18] = 0; /* Two volume levels */ |
762 |
buf[19] = 2; |
763 |
cpu_to_ube16(&buf[20], 512); /* 512k buffer */ |
764 |
cpu_to_ube16(&buf[22], 704); /* 4x read speed current */ |
765 |
buf[24] = 0; |
766 |
buf[25] = 0; |
767 |
buf[26] = 0; |
768 |
buf[27] = 0; |
769 |
buf[28] = 0; |
770 |
buf[29] = 0; |
771 |
ide_atapi_cmd_reply(s, 30, max_len);
|
772 |
break;
|
773 |
default:
|
774 |
goto error_cmd;
|
775 |
} |
776 |
break;
|
777 |
case 1: /* changeable values */ |
778 |
goto error_cmd;
|
779 |
case 2: /* default values */ |
780 |
goto error_cmd;
|
781 |
default:
|
782 |
case 3: /* saved values */ |
783 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, |
784 |
ASC_SAVING_PARAMETERS_NOT_SUPPORTED); |
785 |
break;
|
786 |
} |
787 |
return;
|
788 |
|
789 |
error_cmd:
|
790 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET); |
791 |
} |
792 |
|
793 |
static void cmd_test_unit_ready(IDEState *s, uint8_t *buf) |
794 |
{ |
795 |
/* Not Ready Conditions are already handled in ide_atapi_cmd(), so if we
|
796 |
* come here, we know that it's ready. */
|
797 |
ide_atapi_cmd_ok(s); |
798 |
} |
799 |
|
800 |
static void cmd_prevent_allow_medium_removal(IDEState *s, uint8_t* buf) |
801 |
{ |
802 |
s->tray_locked = buf[4] & 1; |
803 |
bdrv_lock_medium(s->bs, buf[4] & 1); |
804 |
ide_atapi_cmd_ok(s); |
805 |
} |
806 |
|
807 |
static void cmd_read(IDEState *s, uint8_t* buf) |
808 |
{ |
809 |
int nb_sectors, lba;
|
810 |
|
811 |
if (buf[0] == GPCMD_READ_10) { |
812 |
nb_sectors = ube16_to_cpu(buf + 7);
|
813 |
} else {
|
814 |
nb_sectors = ube32_to_cpu(buf + 6);
|
815 |
} |
816 |
|
817 |
lba = ube32_to_cpu(buf + 2);
|
818 |
if (nb_sectors == 0) { |
819 |
ide_atapi_cmd_ok(s); |
820 |
return;
|
821 |
} |
822 |
|
823 |
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
|
824 |
} |
825 |
|
826 |
static void cmd_read_cd(IDEState *s, uint8_t* buf) |
827 |
{ |
828 |
int nb_sectors, lba, transfer_request;
|
829 |
|
830 |
nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8]; |
831 |
lba = ube32_to_cpu(buf + 2);
|
832 |
|
833 |
if (nb_sectors == 0) { |
834 |
ide_atapi_cmd_ok(s); |
835 |
return;
|
836 |
} |
837 |
|
838 |
transfer_request = buf[9];
|
839 |
switch(transfer_request & 0xf8) { |
840 |
case 0x00: |
841 |
/* nothing */
|
842 |
ide_atapi_cmd_ok(s); |
843 |
break;
|
844 |
case 0x10: |
845 |
/* normal read */
|
846 |
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
|
847 |
break;
|
848 |
case 0xf8: |
849 |
/* read all data */
|
850 |
ide_atapi_cmd_read(s, lba, nb_sectors, 2352);
|
851 |
break;
|
852 |
default:
|
853 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, |
854 |
ASC_INV_FIELD_IN_CMD_PACKET); |
855 |
break;
|
856 |
} |
857 |
} |
858 |
|
859 |
static void cmd_seek(IDEState *s, uint8_t* buf) |
860 |
{ |
861 |
unsigned int lba; |
862 |
uint64_t total_sectors = s->nb_sectors >> 2;
|
863 |
|
864 |
lba = ube32_to_cpu(buf + 2);
|
865 |
if (lba >= total_sectors) {
|
866 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR); |
867 |
return;
|
868 |
} |
869 |
|
870 |
ide_atapi_cmd_ok(s); |
871 |
} |
872 |
|
873 |
static void cmd_start_stop_unit(IDEState *s, uint8_t* buf) |
874 |
{ |
875 |
int sense;
|
876 |
bool start = buf[4] & 1; |
877 |
bool loej = buf[4] & 2; /* load on start, eject on !start */ |
878 |
int pwrcnd = buf[4] & 0xf0; |
879 |
|
880 |
if (pwrcnd) {
|
881 |
/* eject/load only happens for power condition == 0 */
|
882 |
return;
|
883 |
} |
884 |
|
885 |
if (loej) {
|
886 |
if (!start && !s->tray_open && s->tray_locked) {
|
887 |
sense = bdrv_is_inserted(s->bs) |
888 |
? NOT_READY : ILLEGAL_REQUEST; |
889 |
ide_atapi_cmd_error(s, sense, ASC_MEDIA_REMOVAL_PREVENTED); |
890 |
return;
|
891 |
} |
892 |
|
893 |
if (s->tray_open != !start) {
|
894 |
bdrv_eject(s->bs, !start); |
895 |
s->tray_open = !start; |
896 |
} |
897 |
} |
898 |
|
899 |
ide_atapi_cmd_ok(s); |
900 |
} |
901 |
|
902 |
static void cmd_mechanism_status(IDEState *s, uint8_t* buf) |
903 |
{ |
904 |
int max_len = ube16_to_cpu(buf + 8); |
905 |
|
906 |
cpu_to_ube16(buf, 0);
|
907 |
/* no current LBA */
|
908 |
buf[2] = 0; |
909 |
buf[3] = 0; |
910 |
buf[4] = 0; |
911 |
buf[5] = 1; |
912 |
cpu_to_ube16(buf + 6, 0); |
913 |
ide_atapi_cmd_reply(s, 8, max_len);
|
914 |
} |
915 |
|
916 |
static void cmd_read_toc_pma_atip(IDEState *s, uint8_t* buf) |
917 |
{ |
918 |
int format, msf, start_track, len;
|
919 |
int max_len;
|
920 |
uint64_t total_sectors = s->nb_sectors >> 2;
|
921 |
|
922 |
max_len = ube16_to_cpu(buf + 7);
|
923 |
format = buf[9] >> 6; |
924 |
msf = (buf[1] >> 1) & 1; |
925 |
start_track = buf[6];
|
926 |
|
927 |
switch(format) {
|
928 |
case 0: |
929 |
len = cdrom_read_toc(total_sectors, buf, msf, start_track); |
930 |
if (len < 0) |
931 |
goto error_cmd;
|
932 |
ide_atapi_cmd_reply(s, len, max_len); |
933 |
break;
|
934 |
case 1: |
935 |
/* multi session : only a single session defined */
|
936 |
memset(buf, 0, 12); |
937 |
buf[1] = 0x0a; |
938 |
buf[2] = 0x01; |
939 |
buf[3] = 0x01; |
940 |
ide_atapi_cmd_reply(s, 12, max_len);
|
941 |
break;
|
942 |
case 2: |
943 |
len = cdrom_read_toc_raw(total_sectors, buf, msf, start_track); |
944 |
if (len < 0) |
945 |
goto error_cmd;
|
946 |
ide_atapi_cmd_reply(s, len, max_len); |
947 |
break;
|
948 |
default:
|
949 |
error_cmd:
|
950 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, |
951 |
ASC_INV_FIELD_IN_CMD_PACKET); |
952 |
} |
953 |
} |
954 |
|
955 |
static void cmd_read_cdvd_capacity(IDEState *s, uint8_t* buf) |
956 |
{ |
957 |
uint64_t total_sectors = s->nb_sectors >> 2;
|
958 |
|
959 |
/* NOTE: it is really the number of sectors minus 1 */
|
960 |
cpu_to_ube32(buf, total_sectors - 1);
|
961 |
cpu_to_ube32(buf + 4, 2048); |
962 |
ide_atapi_cmd_reply(s, 8, 8); |
963 |
} |
964 |
|
965 |
static void cmd_read_disc_information(IDEState *s, uint8_t* buf) |
966 |
{ |
967 |
uint8_t type = buf[1] & 7; |
968 |
uint32_t max_len = ube16_to_cpu(buf + 7);
|
969 |
|
970 |
/* Types 1/2 are only defined for Blu-Ray. */
|
971 |
if (type != 0) { |
972 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, |
973 |
ASC_INV_FIELD_IN_CMD_PACKET); |
974 |
return;
|
975 |
} |
976 |
|
977 |
memset(buf, 0, 34); |
978 |
buf[1] = 32; |
979 |
buf[2] = 0xe; /* last session complete, disc finalized */ |
980 |
buf[3] = 1; /* first track on disc */ |
981 |
buf[4] = 1; /* # of sessions */ |
982 |
buf[5] = 1; /* first track of last session */ |
983 |
buf[6] = 1; /* last track of last session */ |
984 |
buf[7] = 0x20; /* unrestricted use */ |
985 |
buf[8] = 0x00; /* CD-ROM or DVD-ROM */ |
986 |
/* 9-10-11: most significant byte corresponding bytes 4-5-6 */
|
987 |
/* 12-23: not meaningful for CD-ROM or DVD-ROM */
|
988 |
/* 24-31: disc bar code */
|
989 |
/* 32: disc application code */
|
990 |
/* 33: number of OPC tables */
|
991 |
|
992 |
ide_atapi_cmd_reply(s, 34, max_len);
|
993 |
} |
994 |
|
995 |
static void cmd_read_dvd_structure(IDEState *s, uint8_t* buf) |
996 |
{ |
997 |
int max_len;
|
998 |
int media = buf[1]; |
999 |
int format = buf[7]; |
1000 |
int ret;
|
1001 |
|
1002 |
max_len = ube16_to_cpu(buf + 8);
|
1003 |
|
1004 |
if (format < 0xff) { |
1005 |
if (media_is_cd(s)) {
|
1006 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, |
1007 |
ASC_INCOMPATIBLE_FORMAT); |
1008 |
return;
|
1009 |
} else if (!media_present(s)) { |
1010 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, |
1011 |
ASC_INV_FIELD_IN_CMD_PACKET); |
1012 |
return;
|
1013 |
} |
1014 |
} |
1015 |
|
1016 |
memset(buf, 0, max_len > IDE_DMA_BUF_SECTORS * 512 + 4 ? |
1017 |
IDE_DMA_BUF_SECTORS * 512 + 4 : max_len); |
1018 |
|
1019 |
switch (format) {
|
1020 |
case 0x00 ... 0x7f: |
1021 |
case 0xff: |
1022 |
if (media == 0) { |
1023 |
ret = ide_dvd_read_structure(s, format, buf, buf); |
1024 |
|
1025 |
if (ret < 0) { |
1026 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, -ret); |
1027 |
} else {
|
1028 |
ide_atapi_cmd_reply(s, ret, max_len); |
1029 |
} |
1030 |
|
1031 |
break;
|
1032 |
} |
1033 |
/* TODO: BD support, fall through for now */
|
1034 |
|
1035 |
/* Generic disk structures */
|
1036 |
case 0x80: /* TODO: AACS volume identifier */ |
1037 |
case 0x81: /* TODO: AACS media serial number */ |
1038 |
case 0x82: /* TODO: AACS media identifier */ |
1039 |
case 0x83: /* TODO: AACS media key block */ |
1040 |
case 0x90: /* TODO: List of recognized format layers */ |
1041 |
case 0xc0: /* TODO: Write protection status */ |
1042 |
default:
|
1043 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, |
1044 |
ASC_INV_FIELD_IN_CMD_PACKET); |
1045 |
break;
|
1046 |
} |
1047 |
} |
1048 |
|
1049 |
static void cmd_set_speed(IDEState *s, uint8_t* buf) |
1050 |
{ |
1051 |
ide_atapi_cmd_ok(s); |
1052 |
} |
1053 |
|
1054 |
enum {
|
1055 |
/*
|
1056 |
* Only commands flagged as ALLOW_UA are allowed to run under a
|
1057 |
* unit attention condition. (See MMC-5, section 4.1.6.1)
|
1058 |
*/
|
1059 |
ALLOW_UA = 0x01,
|
1060 |
|
1061 |
/*
|
1062 |
* Commands flagged with CHECK_READY can only execute if a medium is present.
|
1063 |
* Otherwise they report the Not Ready Condition. (See MMC-5, section
|
1064 |
* 4.1.8)
|
1065 |
*/
|
1066 |
CHECK_READY = 0x02,
|
1067 |
}; |
1068 |
|
1069 |
static const struct { |
1070 |
void (*handler)(IDEState *s, uint8_t *buf);
|
1071 |
int flags;
|
1072 |
} atapi_cmd_table[0x100] = {
|
1073 |
[ 0x00 ] = { cmd_test_unit_ready, CHECK_READY },
|
1074 |
[ 0x03 ] = { cmd_request_sense, ALLOW_UA },
|
1075 |
[ 0x12 ] = { cmd_inquiry, ALLOW_UA },
|
1076 |
[ 0x1b ] = { cmd_start_stop_unit, 0 }, /* [1] */ |
1077 |
[ 0x1e ] = { cmd_prevent_allow_medium_removal, 0 }, |
1078 |
[ 0x25 ] = { cmd_read_cdvd_capacity, CHECK_READY },
|
1079 |
[ 0x28 ] = { cmd_read, /* (10) */ CHECK_READY }, |
1080 |
[ 0x2b ] = { cmd_seek, CHECK_READY },
|
1081 |
[ 0x43 ] = { cmd_read_toc_pma_atip, CHECK_READY },
|
1082 |
[ 0x46 ] = { cmd_get_configuration, ALLOW_UA },
|
1083 |
[ 0x4a ] = { cmd_get_event_status_notification, ALLOW_UA },
|
1084 |
[ 0x51 ] = { cmd_read_disc_information, CHECK_READY },
|
1085 |
[ 0x5a ] = { cmd_mode_sense, /* (10) */ 0 }, |
1086 |
[ 0xa8 ] = { cmd_read, /* (12) */ CHECK_READY }, |
1087 |
[ 0xad ] = { cmd_read_dvd_structure, CHECK_READY },
|
1088 |
[ 0xbb ] = { cmd_set_speed, 0 }, |
1089 |
[ 0xbd ] = { cmd_mechanism_status, 0 }, |
1090 |
[ 0xbe ] = { cmd_read_cd, CHECK_READY },
|
1091 |
/* [1] handler detects and reports not ready condition itself */
|
1092 |
}; |
1093 |
|
1094 |
void ide_atapi_cmd(IDEState *s)
|
1095 |
{ |
1096 |
uint8_t *buf; |
1097 |
|
1098 |
buf = s->io_buffer; |
1099 |
#ifdef DEBUG_IDE_ATAPI
|
1100 |
{ |
1101 |
int i;
|
1102 |
printf("ATAPI limit=0x%x packet:", s->lcyl | (s->hcyl << 8)); |
1103 |
for(i = 0; i < ATAPI_PACKET_SIZE; i++) { |
1104 |
printf(" %02x", buf[i]);
|
1105 |
} |
1106 |
printf("\n");
|
1107 |
} |
1108 |
#endif
|
1109 |
/*
|
1110 |
* If there's a UNIT_ATTENTION condition pending, only command flagged with
|
1111 |
* ALLOW_UA are allowed to complete. with other commands getting a CHECK
|
1112 |
* condition response unless a higher priority status, defined by the drive
|
1113 |
* here, is pending.
|
1114 |
*/
|
1115 |
if (s->sense_key == UNIT_ATTENTION &&
|
1116 |
!(atapi_cmd_table[s->io_buffer[0]].flags & ALLOW_UA)) {
|
1117 |
ide_atapi_cmd_check_status(s); |
1118 |
return;
|
1119 |
} |
1120 |
/*
|
1121 |
* When a CD gets changed, we have to report an ejected state and
|
1122 |
* then a loaded state to guests so that they detect tray
|
1123 |
* open/close and media change events. Guests that do not use
|
1124 |
* GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
|
1125 |
* states rely on this behavior.
|
1126 |
*/
|
1127 |
if (!(atapi_cmd_table[s->io_buffer[0]].flags & ALLOW_UA) && |
1128 |
!s->tray_open && bdrv_is_inserted(s->bs) && s->cdrom_changed) { |
1129 |
|
1130 |
if (s->cdrom_changed == 1) { |
1131 |
ide_atapi_cmd_error(s, NOT_READY, ASC_MEDIUM_NOT_PRESENT); |
1132 |
s->cdrom_changed = 2;
|
1133 |
} else {
|
1134 |
ide_atapi_cmd_error(s, UNIT_ATTENTION, ASC_MEDIUM_MAY_HAVE_CHANGED); |
1135 |
s->cdrom_changed = 0;
|
1136 |
} |
1137 |
|
1138 |
return;
|
1139 |
} |
1140 |
|
1141 |
/* Report a Not Ready condition if appropriate for the command */
|
1142 |
if ((atapi_cmd_table[s->io_buffer[0]].flags & CHECK_READY) && |
1143 |
(!media_present(s) || !bdrv_is_inserted(s->bs))) |
1144 |
{ |
1145 |
ide_atapi_cmd_error(s, NOT_READY, ASC_MEDIUM_NOT_PRESENT); |
1146 |
return;
|
1147 |
} |
1148 |
|
1149 |
/* Execute the command */
|
1150 |
if (atapi_cmd_table[s->io_buffer[0]].handler) { |
1151 |
atapi_cmd_table[s->io_buffer[0]].handler(s, buf);
|
1152 |
return;
|
1153 |
} |
1154 |
|
1155 |
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_ILLEGAL_OPCODE); |
1156 |
} |