root / hw / ide / atapi.c @ 02fa69b6
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/*
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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.h" |
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|
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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) |
| 32 |
{
|
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int i;
|
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for(i = 0; i < buf_size; i++) { |
| 35 |
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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} |
| 41 |
|
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static inline void cpu_to_ube16(uint8_t *buf, int val) |
| 43 |
{
|
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buf[0] = val >> 8; |
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buf[1] = val & 0xff; |
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} |
| 47 |
|
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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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} |
| 55 |
|
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static inline int ube16_to_cpu(const uint8_t *buf) |
| 57 |
{
|
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return (buf[0] << 8) | buf[1]; |
| 59 |
} |
| 60 |
|
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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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} |
| 65 |
|
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static void lba_to_msf(uint8_t *buf, int lba) |
| 67 |
{
|
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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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} |
| 73 |
|
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static inline int media_present(IDEState *s) |
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{
|
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return (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(BlockDriverState *bs, int lba, uint8_t *buf, |
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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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ret = bdrv_read(bs, (int64_t)lba << 2, buf, 4); |
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break;
|
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case 2352: |
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ret = bdrv_read(bs, (int64_t)lba << 2, buf + 16, 4); |
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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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} |
| 128 |
|
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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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} |
| 136 |
|
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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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|
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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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|
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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
|
| 181 |
} 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->bs, s->lba, s->io_buffer, s->cd_sector_size); |
| 185 |
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++; |
| 191 |
s->io_buffer_index = 0;
|
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} |
| 193 |
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; |
| 214 |
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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} |
| 240 |
|
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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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s->status = READY_STAT | SEEK_STAT | DRQ_STAT; |
| 254 |
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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} |
| 261 |
|
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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, |
| 264 |
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; |
| 268 |
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; |
| 271 |
|
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s->status = READY_STAT | SEEK_STAT; |
| 273 |
ide_atapi_cmd_reply_end(s); |
| 274 |
} |
| 275 |
|
| 276 |
static void ide_atapi_cmd_check_status(IDEState *s) |
| 277 |
{
|
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#ifdef DEBUG_IDE_ATAPI
|
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printf("atapi_cmd_check_status\n");
|
| 280 |
#endif
|
| 281 |
s->error = MC_ERR | (SENSE_UNIT_ATTENTION << 4);
|
| 282 |
s->status = ERR_STAT; |
| 283 |
s->nsector = 0;
|
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ide_set_irq(s->bus); |
| 285 |
} |
| 286 |
/* ATAPI DMA support */
|
| 287 |
|
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/* XXX: handle read errors */
|
| 289 |
static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret) |
| 290 |
{
|
| 291 |
IDEState *s = opaque; |
| 292 |
int data_offset, n;
|
| 293 |
|
| 294 |
if (ret < 0) { |
| 295 |
ide_atapi_io_error(s, ret); |
| 296 |
goto eot;
|
| 297 |
} |
| 298 |
|
| 299 |
if (s->io_buffer_size > 0) { |
| 300 |
/*
|
| 301 |
* For a cdrom read sector command (s->lba != -1),
|
| 302 |
* adjust the lba for the next s->io_buffer_size chunk
|
| 303 |
* and dma the current chunk.
|
| 304 |
* For a command != read (s->lba == -1), just transfer
|
| 305 |
* the reply data.
|
| 306 |
*/
|
| 307 |
if (s->lba != -1) { |
| 308 |
if (s->cd_sector_size == 2352) { |
| 309 |
n = 1;
|
| 310 |
cd_data_to_raw(s->io_buffer, s->lba); |
| 311 |
} else {
|
| 312 |
n = s->io_buffer_size >> 11;
|
| 313 |
} |
| 314 |
s->lba += n; |
| 315 |
} |
| 316 |
s->packet_transfer_size -= s->io_buffer_size; |
| 317 |
if (s->bus->dma->ops->rw_buf(s->bus->dma, 1) == 0) |
| 318 |
goto eot;
|
| 319 |
} |
| 320 |
|
| 321 |
if (s->packet_transfer_size <= 0) { |
| 322 |
s->status = READY_STAT | SEEK_STAT; |
| 323 |
s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
|
| 324 |
ide_set_irq(s->bus); |
| 325 |
eot:
|
| 326 |
s->bus->dma->ops->add_status(s->bus->dma, BM_STATUS_INT); |
| 327 |
ide_set_inactive(s); |
| 328 |
return;
|
| 329 |
} |
| 330 |
|
| 331 |
s->io_buffer_index = 0;
|
| 332 |
if (s->cd_sector_size == 2352) { |
| 333 |
n = 1;
|
| 334 |
s->io_buffer_size = s->cd_sector_size; |
| 335 |
data_offset = 16;
|
| 336 |
} else {
|
| 337 |
n = s->packet_transfer_size >> 11;
|
| 338 |
if (n > (IDE_DMA_BUF_SECTORS / 4)) |
| 339 |
n = (IDE_DMA_BUF_SECTORS / 4);
|
| 340 |
s->io_buffer_size = n * 2048;
|
| 341 |
data_offset = 0;
|
| 342 |
} |
| 343 |
#ifdef DEBUG_AIO
|
| 344 |
printf("aio_read_cd: lba=%u n=%d\n", s->lba, n);
|
| 345 |
#endif
|
| 346 |
s->bus->dma->iov.iov_base = (void *)(s->io_buffer + data_offset);
|
| 347 |
s->bus->dma->iov.iov_len = n * 4 * 512; |
| 348 |
qemu_iovec_init_external(&s->bus->dma->qiov, &s->bus->dma->iov, 1);
|
| 349 |
s->bus->dma->aiocb = bdrv_aio_readv(s->bs, (int64_t)s->lba << 2,
|
| 350 |
&s->bus->dma->qiov, n * 4,
|
| 351 |
ide_atapi_cmd_read_dma_cb, s); |
| 352 |
if (!s->bus->dma->aiocb) {
|
| 353 |
/* Note: media not present is the most likely case */
|
| 354 |
ide_atapi_cmd_error(s, SENSE_NOT_READY, |
| 355 |
ASC_MEDIUM_NOT_PRESENT); |
| 356 |
goto eot;
|
| 357 |
} |
| 358 |
} |
| 359 |
|
| 360 |
/* start a CD-CDROM read command with DMA */
|
| 361 |
/* XXX: test if DMA is available */
|
| 362 |
static void ide_atapi_cmd_read_dma(IDEState *s, int lba, int nb_sectors, |
| 363 |
int sector_size)
|
| 364 |
{
|
| 365 |
s->lba = lba; |
| 366 |
s->packet_transfer_size = nb_sectors * sector_size; |
| 367 |
s->io_buffer_index = 0;
|
| 368 |
s->io_buffer_size = 0;
|
| 369 |
s->cd_sector_size = sector_size; |
| 370 |
|
| 371 |
/* XXX: check if BUSY_STAT should be set */
|
| 372 |
s->status = READY_STAT | SEEK_STAT | DRQ_STAT | BUSY_STAT; |
| 373 |
s->bus->dma->ops->start_dma(s->bus->dma, s, |
| 374 |
ide_atapi_cmd_read_dma_cb); |
| 375 |
} |
| 376 |
|
| 377 |
static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors, |
| 378 |
int sector_size)
|
| 379 |
{
|
| 380 |
#ifdef DEBUG_IDE_ATAPI
|
| 381 |
printf("read %s: LBA=%d nb_sectors=%d\n", s->atapi_dma ? "dma" : "pio", |
| 382 |
lba, nb_sectors); |
| 383 |
#endif
|
| 384 |
if (s->atapi_dma) {
|
| 385 |
ide_atapi_cmd_read_dma(s, lba, nb_sectors, sector_size); |
| 386 |
} else {
|
| 387 |
ide_atapi_cmd_read_pio(s, lba, nb_sectors, sector_size); |
| 388 |
} |
| 389 |
} |
| 390 |
|
| 391 |
static inline uint8_t ide_atapi_set_profile(uint8_t *buf, uint8_t *index, |
| 392 |
uint16_t profile) |
| 393 |
{
|
| 394 |
uint8_t *buf_profile = buf + 12; /* start of profiles */ |
| 395 |
|
| 396 |
buf_profile += ((*index) * 4); /* start of indexed profile */ |
| 397 |
cpu_to_ube16 (buf_profile, profile); |
| 398 |
buf_profile[2] = ((buf_profile[0] == buf[6]) && (buf_profile[1] == buf[7])); |
| 399 |
|
| 400 |
/* each profile adds 4 bytes to the response */
|
| 401 |
(*index)++; |
| 402 |
buf[11] += 4; /* Additional Length */ |
| 403 |
|
| 404 |
return 4; |
| 405 |
} |
| 406 |
|
| 407 |
static int ide_dvd_read_structure(IDEState *s, int format, |
| 408 |
const uint8_t *packet, uint8_t *buf)
|
| 409 |
{
|
| 410 |
switch (format) {
|
| 411 |
case 0x0: /* Physical format information */ |
| 412 |
{
|
| 413 |
int layer = packet[6]; |
| 414 |
uint64_t total_sectors; |
| 415 |
|
| 416 |
if (layer != 0) |
| 417 |
return -ASC_INV_FIELD_IN_CMD_PACKET;
|
| 418 |
|
| 419 |
total_sectors = s->nb_sectors >> 2;
|
| 420 |
if (total_sectors == 0) { |
| 421 |
return -ASC_MEDIUM_NOT_PRESENT;
|
| 422 |
} |
| 423 |
|
| 424 |
buf[4] = 1; /* DVD-ROM, part version 1 */ |
| 425 |
buf[5] = 0xf; /* 120mm disc, minimum rate unspecified */ |
| 426 |
buf[6] = 1; /* one layer, read-only (per MMC-2 spec) */ |
| 427 |
buf[7] = 0; /* default densities */ |
| 428 |
|
| 429 |
/* FIXME: 0x30000 per spec? */
|
| 430 |
cpu_to_ube32(buf + 8, 0); /* start sector */ |
| 431 |
cpu_to_ube32(buf + 12, total_sectors - 1); /* end sector */ |
| 432 |
cpu_to_ube32(buf + 16, total_sectors - 1); /* l0 end sector */ |
| 433 |
|
| 434 |
/* Size of buffer, not including 2 byte size field */
|
| 435 |
cpu_to_be16wu((uint16_t *)buf, 2048 + 2); |
| 436 |
|
| 437 |
/* 2k data + 4 byte header */
|
| 438 |
return (2048 + 4); |
| 439 |
} |
| 440 |
|
| 441 |
case 0x01: /* DVD copyright information */ |
| 442 |
buf[4] = 0; /* no copyright data */ |
| 443 |
buf[5] = 0; /* no region restrictions */ |
| 444 |
|
| 445 |
/* Size of buffer, not including 2 byte size field */
|
| 446 |
cpu_to_be16wu((uint16_t *)buf, 4 + 2); |
| 447 |
|
| 448 |
/* 4 byte header + 4 byte data */
|
| 449 |
return (4 + 4); |
| 450 |
|
| 451 |
case 0x03: /* BCA information - invalid field for no BCA info */ |
| 452 |
return -ASC_INV_FIELD_IN_CMD_PACKET;
|
| 453 |
|
| 454 |
case 0x04: /* DVD disc manufacturing information */ |
| 455 |
/* Size of buffer, not including 2 byte size field */
|
| 456 |
cpu_to_be16wu((uint16_t *)buf, 2048 + 2); |
| 457 |
|
| 458 |
/* 2k data + 4 byte header */
|
| 459 |
return (2048 + 4); |
| 460 |
|
| 461 |
case 0xff: |
| 462 |
/*
|
| 463 |
* This lists all the command capabilities above. Add new ones
|
| 464 |
* in order and update the length and buffer return values.
|
| 465 |
*/
|
| 466 |
|
| 467 |
buf[4] = 0x00; /* Physical format */ |
| 468 |
buf[5] = 0x40; /* Not writable, is readable */ |
| 469 |
cpu_to_be16wu((uint16_t *)(buf + 6), 2048 + 4); |
| 470 |
|
| 471 |
buf[8] = 0x01; /* Copyright info */ |
| 472 |
buf[9] = 0x40; /* Not writable, is readable */ |
| 473 |
cpu_to_be16wu((uint16_t *)(buf + 10), 4 + 4); |
| 474 |
|
| 475 |
buf[12] = 0x03; /* BCA info */ |
| 476 |
buf[13] = 0x40; /* Not writable, is readable */ |
| 477 |
cpu_to_be16wu((uint16_t *)(buf + 14), 188 + 4); |
| 478 |
|
| 479 |
buf[16] = 0x04; /* Manufacturing info */ |
| 480 |
buf[17] = 0x40; /* Not writable, is readable */ |
| 481 |
cpu_to_be16wu((uint16_t *)(buf + 18), 2048 + 4); |
| 482 |
|
| 483 |
/* Size of buffer, not including 2 byte size field */
|
| 484 |
cpu_to_be16wu((uint16_t *)buf, 16 + 2); |
| 485 |
|
| 486 |
/* data written + 4 byte header */
|
| 487 |
return (16 + 4); |
| 488 |
|
| 489 |
default: /* TODO: formats beyond DVD-ROM requires */ |
| 490 |
return -ASC_INV_FIELD_IN_CMD_PACKET;
|
| 491 |
} |
| 492 |
} |
| 493 |
|
| 494 |
static unsigned int event_status_media(IDEState *s, |
| 495 |
uint8_t *buf) |
| 496 |
{
|
| 497 |
enum media_event_code {
|
| 498 |
MEC_NO_CHANGE = 0, /* Status unchanged */ |
| 499 |
MEC_EJECT_REQUESTED, /* received a request from user to eject */
|
| 500 |
MEC_NEW_MEDIA, /* new media inserted and ready for access */
|
| 501 |
MEC_MEDIA_REMOVAL, /* only for media changers */
|
| 502 |
MEC_MEDIA_CHANGED, /* only for media changers */
|
| 503 |
MEC_BG_FORMAT_COMPLETED, /* MRW or DVD+RW b/g format completed */
|
| 504 |
MEC_BG_FORMAT_RESTARTED, /* MRW or DVD+RW b/g format restarted */
|
| 505 |
}; |
| 506 |
enum media_status {
|
| 507 |
MS_TRAY_OPEN = 1,
|
| 508 |
MS_MEDIA_PRESENT = 2,
|
| 509 |
}; |
| 510 |
uint8_t event_code, media_status; |
| 511 |
|
| 512 |
media_status = 0;
|
| 513 |
if (s->bs->tray_open) {
|
| 514 |
media_status = MS_TRAY_OPEN; |
| 515 |
} else if (bdrv_is_inserted(s->bs)) { |
| 516 |
media_status = MS_MEDIA_PRESENT; |
| 517 |
} |
| 518 |
|
| 519 |
/* Event notification descriptor */
|
| 520 |
event_code = MEC_NO_CHANGE; |
| 521 |
if (media_status != MS_TRAY_OPEN && s->events.new_media) {
|
| 522 |
event_code = MEC_NEW_MEDIA; |
| 523 |
s->events.new_media = false;
|
| 524 |
} |
| 525 |
|
| 526 |
buf[4] = event_code;
|
| 527 |
buf[5] = media_status;
|
| 528 |
|
| 529 |
/* These fields are reserved, just clear them. */
|
| 530 |
buf[6] = 0; |
| 531 |
buf[7] = 0; |
| 532 |
|
| 533 |
return 8; /* We wrote to 4 extra bytes from the header */ |
| 534 |
} |
| 535 |
|
| 536 |
static void cmd_get_event_status_notification(IDEState *s, |
| 537 |
uint8_t *buf) |
| 538 |
{
|
| 539 |
const uint8_t *packet = buf;
|
| 540 |
|
| 541 |
struct {
|
| 542 |
uint8_t opcode; |
| 543 |
uint8_t polled; /* lsb bit is polled; others are reserved */
|
| 544 |
uint8_t reserved2[2];
|
| 545 |
uint8_t class; |
| 546 |
uint8_t reserved3[2];
|
| 547 |
uint16_t len; |
| 548 |
uint8_t control; |
| 549 |
} __attribute__((packed)) *gesn_cdb; |
| 550 |
|
| 551 |
struct {
|
| 552 |
uint16_t len; |
| 553 |
uint8_t notification_class; |
| 554 |
uint8_t supported_events; |
| 555 |
} __attribute((packed)) *gesn_event_header; |
| 556 |
|
| 557 |
enum notification_class_request_type {
|
| 558 |
NCR_RESERVED1 = 1 << 0, |
| 559 |
NCR_OPERATIONAL_CHANGE = 1 << 1, |
| 560 |
NCR_POWER_MANAGEMENT = 1 << 2, |
| 561 |
NCR_EXTERNAL_REQUEST = 1 << 3, |
| 562 |
NCR_MEDIA = 1 << 4, |
| 563 |
NCR_MULTI_HOST = 1 << 5, |
| 564 |
NCR_DEVICE_BUSY = 1 << 6, |
| 565 |
NCR_RESERVED2 = 1 << 7, |
| 566 |
}; |
| 567 |
enum event_notification_class_field {
|
| 568 |
ENC_NO_EVENTS = 0,
|
| 569 |
ENC_OPERATIONAL_CHANGE, |
| 570 |
ENC_POWER_MANAGEMENT, |
| 571 |
ENC_EXTERNAL_REQUEST, |
| 572 |
ENC_MEDIA, |
| 573 |
ENC_MULTIPLE_HOSTS, |
| 574 |
ENC_DEVICE_BUSY, |
| 575 |
ENC_RESERVED, |
| 576 |
}; |
| 577 |
unsigned int max_len, used_len; |
| 578 |
|
| 579 |
gesn_cdb = (void *)packet;
|
| 580 |
gesn_event_header = (void *)buf;
|
| 581 |
|
| 582 |
max_len = be16_to_cpu(gesn_cdb->len); |
| 583 |
|
| 584 |
/* It is fine by the MMC spec to not support async mode operations */
|
| 585 |
if (!(gesn_cdb->polled & 0x01)) { /* asynchronous mode */ |
| 586 |
/* Only polling is supported, asynchronous mode is not. */
|
| 587 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, |
| 588 |
ASC_INV_FIELD_IN_CMD_PACKET); |
| 589 |
return;
|
| 590 |
} |
| 591 |
|
| 592 |
/* polling mode operation */
|
| 593 |
|
| 594 |
/*
|
| 595 |
* These are the supported events.
|
| 596 |
*
|
| 597 |
* We currently only support requests of the 'media' type.
|
| 598 |
*/
|
| 599 |
gesn_event_header->supported_events = NCR_MEDIA; |
| 600 |
|
| 601 |
/*
|
| 602 |
* We use |= below to set the class field; other bits in this byte
|
| 603 |
* are reserved now but this is useful to do if we have to use the
|
| 604 |
* reserved fields later.
|
| 605 |
*/
|
| 606 |
gesn_event_header->notification_class = 0;
|
| 607 |
|
| 608 |
/*
|
| 609 |
* Responses to requests are to be based on request priority. The
|
| 610 |
* notification_class_request_type enum above specifies the
|
| 611 |
* priority: upper elements are higher prio than lower ones.
|
| 612 |
*/
|
| 613 |
if (gesn_cdb->class & NCR_MEDIA) {
|
| 614 |
gesn_event_header->notification_class |= ENC_MEDIA; |
| 615 |
used_len = event_status_media(s, buf); |
| 616 |
} else {
|
| 617 |
gesn_event_header->notification_class = 0x80; /* No event available */ |
| 618 |
used_len = sizeof(*gesn_event_header);
|
| 619 |
} |
| 620 |
gesn_event_header->len = cpu_to_be16(used_len |
| 621 |
- sizeof(*gesn_event_header));
|
| 622 |
ide_atapi_cmd_reply(s, used_len, max_len); |
| 623 |
} |
| 624 |
|
| 625 |
static void cmd_request_sense(IDEState *s, uint8_t *buf) |
| 626 |
{
|
| 627 |
int max_len = buf[4]; |
| 628 |
|
| 629 |
memset(buf, 0, 18); |
| 630 |
buf[0] = 0x70 | (1 << 7); |
| 631 |
buf[2] = s->sense_key;
|
| 632 |
buf[7] = 10; |
| 633 |
buf[12] = s->asc;
|
| 634 |
|
| 635 |
if (s->sense_key == SENSE_UNIT_ATTENTION) {
|
| 636 |
s->sense_key = SENSE_NONE; |
| 637 |
} |
| 638 |
|
| 639 |
ide_atapi_cmd_reply(s, 18, max_len);
|
| 640 |
} |
| 641 |
|
| 642 |
static void cmd_inquiry(IDEState *s, uint8_t *buf) |
| 643 |
{
|
| 644 |
int max_len = buf[4]; |
| 645 |
|
| 646 |
buf[0] = 0x05; /* CD-ROM */ |
| 647 |
buf[1] = 0x80; /* removable */ |
| 648 |
buf[2] = 0x00; /* ISO */ |
| 649 |
buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */ |
| 650 |
buf[4] = 31; /* additional length */ |
| 651 |
buf[5] = 0; /* reserved */ |
| 652 |
buf[6] = 0; /* reserved */ |
| 653 |
buf[7] = 0; /* reserved */ |
| 654 |
padstr8(buf + 8, 8, "QEMU"); |
| 655 |
padstr8(buf + 16, 16, "QEMU DVD-ROM"); |
| 656 |
padstr8(buf + 32, 4, s->version); |
| 657 |
ide_atapi_cmd_reply(s, 36, max_len);
|
| 658 |
} |
| 659 |
|
| 660 |
static void cmd_get_configuration(IDEState *s, uint8_t *buf) |
| 661 |
{
|
| 662 |
uint32_t len; |
| 663 |
uint8_t index = 0;
|
| 664 |
int max_len;
|
| 665 |
|
| 666 |
/* only feature 0 is supported */
|
| 667 |
if (buf[2] != 0 || buf[3] != 0) { |
| 668 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, |
| 669 |
ASC_INV_FIELD_IN_CMD_PACKET); |
| 670 |
return;
|
| 671 |
} |
| 672 |
|
| 673 |
/* XXX: could result in alignment problems in some architectures */
|
| 674 |
max_len = ube16_to_cpu(buf + 7);
|
| 675 |
|
| 676 |
/*
|
| 677 |
* XXX: avoid overflow for io_buffer if max_len is bigger than
|
| 678 |
* the size of that buffer (dimensioned to max number of
|
| 679 |
* sectors to transfer at once)
|
| 680 |
*
|
| 681 |
* Only a problem if the feature/profiles grow.
|
| 682 |
*/
|
| 683 |
if (max_len > 512) { |
| 684 |
/* XXX: assume 1 sector */
|
| 685 |
max_len = 512;
|
| 686 |
} |
| 687 |
|
| 688 |
memset(buf, 0, max_len);
|
| 689 |
/*
|
| 690 |
* the number of sectors from the media tells us which profile
|
| 691 |
* to use as current. 0 means there is no media
|
| 692 |
*/
|
| 693 |
if (media_is_dvd(s)) {
|
| 694 |
cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM);
|
| 695 |
} else if (media_is_cd(s)) { |
| 696 |
cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM);
|
| 697 |
} |
| 698 |
|
| 699 |
buf[10] = 0x02 | 0x01; /* persistent and current */ |
| 700 |
len = 12; /* headers: 8 + 4 */ |
| 701 |
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM); |
| 702 |
len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM); |
| 703 |
cpu_to_ube32(buf, len - 4); /* data length */ |
| 704 |
|
| 705 |
ide_atapi_cmd_reply(s, len, max_len); |
| 706 |
} |
| 707 |
|
| 708 |
static void cmd_mode_sense(IDEState *s, uint8_t *buf) |
| 709 |
{
|
| 710 |
int action, code;
|
| 711 |
int max_len;
|
| 712 |
|
| 713 |
if (buf[0] == GPCMD_MODE_SENSE_10) { |
| 714 |
max_len = ube16_to_cpu(buf + 7);
|
| 715 |
} else {
|
| 716 |
max_len = buf[4];
|
| 717 |
} |
| 718 |
|
| 719 |
action = buf[2] >> 6; |
| 720 |
code = buf[2] & 0x3f; |
| 721 |
|
| 722 |
switch(action) {
|
| 723 |
case 0: /* current values */ |
| 724 |
switch(code) {
|
| 725 |
case GPMODE_R_W_ERROR_PAGE: /* error recovery */ |
| 726 |
cpu_to_ube16(&buf[0], 16 + 6); |
| 727 |
buf[2] = 0x70; |
| 728 |
buf[3] = 0; |
| 729 |
buf[4] = 0; |
| 730 |
buf[5] = 0; |
| 731 |
buf[6] = 0; |
| 732 |
buf[7] = 0; |
| 733 |
|
| 734 |
buf[8] = 0x01; |
| 735 |
buf[9] = 0x06; |
| 736 |
buf[10] = 0x00; |
| 737 |
buf[11] = 0x05; |
| 738 |
buf[12] = 0x00; |
| 739 |
buf[13] = 0x00; |
| 740 |
buf[14] = 0x00; |
| 741 |
buf[15] = 0x00; |
| 742 |
ide_atapi_cmd_reply(s, 16, max_len);
|
| 743 |
break;
|
| 744 |
case GPMODE_AUDIO_CTL_PAGE:
|
| 745 |
cpu_to_ube16(&buf[0], 24 + 6); |
| 746 |
buf[2] = 0x70; |
| 747 |
buf[3] = 0; |
| 748 |
buf[4] = 0; |
| 749 |
buf[5] = 0; |
| 750 |
buf[6] = 0; |
| 751 |
buf[7] = 0; |
| 752 |
|
| 753 |
/* Fill with CDROM audio volume */
|
| 754 |
buf[17] = 0; |
| 755 |
buf[19] = 0; |
| 756 |
buf[21] = 0; |
| 757 |
buf[23] = 0; |
| 758 |
|
| 759 |
ide_atapi_cmd_reply(s, 24, max_len);
|
| 760 |
break;
|
| 761 |
case GPMODE_CAPABILITIES_PAGE:
|
| 762 |
cpu_to_ube16(&buf[0], 28 + 6); |
| 763 |
buf[2] = 0x70; |
| 764 |
buf[3] = 0; |
| 765 |
buf[4] = 0; |
| 766 |
buf[5] = 0; |
| 767 |
buf[6] = 0; |
| 768 |
buf[7] = 0; |
| 769 |
|
| 770 |
buf[8] = 0x2a; |
| 771 |
buf[9] = 0x12; |
| 772 |
buf[10] = 0x00; |
| 773 |
buf[11] = 0x00; |
| 774 |
|
| 775 |
/* Claim PLAY_AUDIO capability (0x01) since some Linux
|
| 776 |
code checks for this to automount media. */
|
| 777 |
buf[12] = 0x71; |
| 778 |
buf[13] = 3 << 5; |
| 779 |
buf[14] = (1 << 0) | (1 << 3) | (1 << 5); |
| 780 |
if (bdrv_is_locked(s->bs))
|
| 781 |
buf[6] |= 1 << 1; |
| 782 |
buf[15] = 0x00; |
| 783 |
cpu_to_ube16(&buf[16], 706); |
| 784 |
buf[18] = 0; |
| 785 |
buf[19] = 2; |
| 786 |
cpu_to_ube16(&buf[20], 512); |
| 787 |
cpu_to_ube16(&buf[22], 706); |
| 788 |
buf[24] = 0; |
| 789 |
buf[25] = 0; |
| 790 |
buf[26] = 0; |
| 791 |
buf[27] = 0; |
| 792 |
ide_atapi_cmd_reply(s, 28, max_len);
|
| 793 |
break;
|
| 794 |
default:
|
| 795 |
goto error_cmd;
|
| 796 |
} |
| 797 |
break;
|
| 798 |
case 1: /* changeable values */ |
| 799 |
goto error_cmd;
|
| 800 |
case 2: /* default values */ |
| 801 |
goto error_cmd;
|
| 802 |
default:
|
| 803 |
case 3: /* saved values */ |
| 804 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, |
| 805 |
ASC_SAVING_PARAMETERS_NOT_SUPPORTED); |
| 806 |
break;
|
| 807 |
} |
| 808 |
return;
|
| 809 |
|
| 810 |
error_cmd:
|
| 811 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET); |
| 812 |
} |
| 813 |
|
| 814 |
static void cmd_test_unit_ready(IDEState *s, uint8_t *buf) |
| 815 |
{
|
| 816 |
/* Not Ready Conditions are already handled in ide_atapi_cmd(), so if we
|
| 817 |
* come here, we know that it's ready. */
|
| 818 |
ide_atapi_cmd_ok(s); |
| 819 |
} |
| 820 |
|
| 821 |
static void cmd_prevent_allow_medium_removal(IDEState *s, uint8_t* buf) |
| 822 |
{
|
| 823 |
bdrv_set_locked(s->bs, buf[4] & 1); |
| 824 |
ide_atapi_cmd_ok(s); |
| 825 |
} |
| 826 |
|
| 827 |
static void cmd_read(IDEState *s, uint8_t* buf) |
| 828 |
{
|
| 829 |
int nb_sectors, lba;
|
| 830 |
|
| 831 |
if (buf[0] == GPCMD_READ_10) { |
| 832 |
nb_sectors = ube16_to_cpu(buf + 7);
|
| 833 |
} else {
|
| 834 |
nb_sectors = ube32_to_cpu(buf + 6);
|
| 835 |
} |
| 836 |
|
| 837 |
lba = ube32_to_cpu(buf + 2);
|
| 838 |
if (nb_sectors == 0) { |
| 839 |
ide_atapi_cmd_ok(s); |
| 840 |
return;
|
| 841 |
} |
| 842 |
|
| 843 |
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
|
| 844 |
} |
| 845 |
|
| 846 |
static void cmd_read_cd(IDEState *s, uint8_t* buf) |
| 847 |
{
|
| 848 |
int nb_sectors, lba, transfer_request;
|
| 849 |
|
| 850 |
nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8]; |
| 851 |
lba = ube32_to_cpu(buf + 2);
|
| 852 |
|
| 853 |
if (nb_sectors == 0) { |
| 854 |
ide_atapi_cmd_ok(s); |
| 855 |
return;
|
| 856 |
} |
| 857 |
|
| 858 |
transfer_request = buf[9];
|
| 859 |
switch(transfer_request & 0xf8) { |
| 860 |
case 0x00: |
| 861 |
/* nothing */
|
| 862 |
ide_atapi_cmd_ok(s); |
| 863 |
break;
|
| 864 |
case 0x10: |
| 865 |
/* normal read */
|
| 866 |
ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
|
| 867 |
break;
|
| 868 |
case 0xf8: |
| 869 |
/* read all data */
|
| 870 |
ide_atapi_cmd_read(s, lba, nb_sectors, 2352);
|
| 871 |
break;
|
| 872 |
default:
|
| 873 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, |
| 874 |
ASC_INV_FIELD_IN_CMD_PACKET); |
| 875 |
break;
|
| 876 |
} |
| 877 |
} |
| 878 |
|
| 879 |
static void cmd_seek(IDEState *s, uint8_t* buf) |
| 880 |
{
|
| 881 |
unsigned int lba; |
| 882 |
uint64_t total_sectors = s->nb_sectors >> 2;
|
| 883 |
|
| 884 |
lba = ube32_to_cpu(buf + 2);
|
| 885 |
if (lba >= total_sectors) {
|
| 886 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR); |
| 887 |
return;
|
| 888 |
} |
| 889 |
|
| 890 |
ide_atapi_cmd_ok(s); |
| 891 |
} |
| 892 |
|
| 893 |
static void cmd_start_stop_unit(IDEState *s, uint8_t* buf) |
| 894 |
{
|
| 895 |
int start, eject, sense, err = 0; |
| 896 |
start = buf[4] & 1; |
| 897 |
eject = (buf[4] >> 1) & 1; |
| 898 |
|
| 899 |
if (eject) {
|
| 900 |
err = bdrv_eject(s->bs, !start); |
| 901 |
} |
| 902 |
|
| 903 |
switch (err) {
|
| 904 |
case 0: |
| 905 |
ide_atapi_cmd_ok(s); |
| 906 |
break;
|
| 907 |
case -EBUSY:
|
| 908 |
sense = SENSE_NOT_READY; |
| 909 |
if (bdrv_is_inserted(s->bs)) {
|
| 910 |
sense = SENSE_ILLEGAL_REQUEST; |
| 911 |
} |
| 912 |
ide_atapi_cmd_error(s, sense, ASC_MEDIA_REMOVAL_PREVENTED); |
| 913 |
break;
|
| 914 |
default:
|
| 915 |
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT); |
| 916 |
break;
|
| 917 |
} |
| 918 |
} |
| 919 |
|
| 920 |
static void cmd_mechanism_status(IDEState *s, uint8_t* buf) |
| 921 |
{
|
| 922 |
int max_len = ube16_to_cpu(buf + 8); |
| 923 |
|
| 924 |
cpu_to_ube16(buf, 0);
|
| 925 |
/* no current LBA */
|
| 926 |
buf[2] = 0; |
| 927 |
buf[3] = 0; |
| 928 |
buf[4] = 0; |
| 929 |
buf[5] = 1; |
| 930 |
cpu_to_ube16(buf + 6, 0); |
| 931 |
ide_atapi_cmd_reply(s, 8, max_len);
|
| 932 |
} |
| 933 |
|
| 934 |
static void cmd_read_toc_pma_atip(IDEState *s, uint8_t* buf) |
| 935 |
{
|
| 936 |
int format, msf, start_track, len;
|
| 937 |
int max_len;
|
| 938 |
uint64_t total_sectors = s->nb_sectors >> 2;
|
| 939 |
|
| 940 |
max_len = ube16_to_cpu(buf + 7);
|
| 941 |
format = buf[9] >> 6; |
| 942 |
msf = (buf[1] >> 1) & 1; |
| 943 |
start_track = buf[6];
|
| 944 |
|
| 945 |
switch(format) {
|
| 946 |
case 0: |
| 947 |
len = cdrom_read_toc(total_sectors, buf, msf, start_track); |
| 948 |
if (len < 0) |
| 949 |
goto error_cmd;
|
| 950 |
ide_atapi_cmd_reply(s, len, max_len); |
| 951 |
break;
|
| 952 |
case 1: |
| 953 |
/* multi session : only a single session defined */
|
| 954 |
memset(buf, 0, 12); |
| 955 |
buf[1] = 0x0a; |
| 956 |
buf[2] = 0x01; |
| 957 |
buf[3] = 0x01; |
| 958 |
ide_atapi_cmd_reply(s, 12, max_len);
|
| 959 |
break;
|
| 960 |
case 2: |
| 961 |
len = cdrom_read_toc_raw(total_sectors, buf, msf, start_track); |
| 962 |
if (len < 0) |
| 963 |
goto error_cmd;
|
| 964 |
ide_atapi_cmd_reply(s, len, max_len); |
| 965 |
break;
|
| 966 |
default:
|
| 967 |
error_cmd:
|
| 968 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, |
| 969 |
ASC_INV_FIELD_IN_CMD_PACKET); |
| 970 |
} |
| 971 |
} |
| 972 |
|
| 973 |
static void cmd_read_cdvd_capacity(IDEState *s, uint8_t* buf) |
| 974 |
{
|
| 975 |
uint64_t total_sectors = s->nb_sectors >> 2;
|
| 976 |
|
| 977 |
/* NOTE: it is really the number of sectors minus 1 */
|
| 978 |
cpu_to_ube32(buf, total_sectors - 1);
|
| 979 |
cpu_to_ube32(buf + 4, 2048); |
| 980 |
ide_atapi_cmd_reply(s, 8, 8); |
| 981 |
} |
| 982 |
|
| 983 |
static void cmd_read_dvd_structure(IDEState *s, uint8_t* buf) |
| 984 |
{
|
| 985 |
int max_len;
|
| 986 |
int media = buf[1]; |
| 987 |
int format = buf[7]; |
| 988 |
int ret;
|
| 989 |
|
| 990 |
max_len = ube16_to_cpu(buf + 8);
|
| 991 |
|
| 992 |
if (format < 0xff) { |
| 993 |
if (media_is_cd(s)) {
|
| 994 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, |
| 995 |
ASC_INCOMPATIBLE_FORMAT); |
| 996 |
return;
|
| 997 |
} else if (!media_present(s)) { |
| 998 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, |
| 999 |
ASC_INV_FIELD_IN_CMD_PACKET); |
| 1000 |
return;
|
| 1001 |
} |
| 1002 |
} |
| 1003 |
|
| 1004 |
memset(buf, 0, max_len > IDE_DMA_BUF_SECTORS * 512 + 4 ? |
| 1005 |
IDE_DMA_BUF_SECTORS * 512 + 4 : max_len); |
| 1006 |
|
| 1007 |
switch (format) {
|
| 1008 |
case 0x00 ... 0x7f: |
| 1009 |
case 0xff: |
| 1010 |
if (media == 0) { |
| 1011 |
ret = ide_dvd_read_structure(s, format, buf, buf); |
| 1012 |
|
| 1013 |
if (ret < 0) { |
| 1014 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, -ret); |
| 1015 |
} else {
|
| 1016 |
ide_atapi_cmd_reply(s, ret, max_len); |
| 1017 |
} |
| 1018 |
|
| 1019 |
break;
|
| 1020 |
} |
| 1021 |
/* TODO: BD support, fall through for now */
|
| 1022 |
|
| 1023 |
/* Generic disk structures */
|
| 1024 |
case 0x80: /* TODO: AACS volume identifier */ |
| 1025 |
case 0x81: /* TODO: AACS media serial number */ |
| 1026 |
case 0x82: /* TODO: AACS media identifier */ |
| 1027 |
case 0x83: /* TODO: AACS media key block */ |
| 1028 |
case 0x90: /* TODO: List of recognized format layers */ |
| 1029 |
case 0xc0: /* TODO: Write protection status */ |
| 1030 |
default:
|
| 1031 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, |
| 1032 |
ASC_INV_FIELD_IN_CMD_PACKET); |
| 1033 |
break;
|
| 1034 |
} |
| 1035 |
} |
| 1036 |
|
| 1037 |
static void cmd_set_speed(IDEState *s, uint8_t* buf) |
| 1038 |
{
|
| 1039 |
ide_atapi_cmd_ok(s); |
| 1040 |
} |
| 1041 |
|
| 1042 |
enum {
|
| 1043 |
/*
|
| 1044 |
* Only commands flagged as ALLOW_UA are allowed to run under a
|
| 1045 |
* unit attention condition. (See MMC-5, section 4.1.6.1)
|
| 1046 |
*/
|
| 1047 |
ALLOW_UA = 0x01,
|
| 1048 |
|
| 1049 |
/*
|
| 1050 |
* Commands flagged with CHECK_READY can only execute if a medium is present.
|
| 1051 |
* Otherwise they report the Not Ready Condition. (See MMC-5, section
|
| 1052 |
* 4.1.8)
|
| 1053 |
*/
|
| 1054 |
CHECK_READY = 0x02,
|
| 1055 |
}; |
| 1056 |
|
| 1057 |
static const struct { |
| 1058 |
void (*handler)(IDEState *s, uint8_t *buf);
|
| 1059 |
int flags;
|
| 1060 |
} atapi_cmd_table[0x100] = {
|
| 1061 |
[ 0x00 ] = { cmd_test_unit_ready, CHECK_READY },
|
| 1062 |
[ 0x03 ] = { cmd_request_sense, ALLOW_UA },
|
| 1063 |
[ 0x12 ] = { cmd_inquiry, ALLOW_UA },
|
| 1064 |
[ 0x1a ] = { cmd_mode_sense, /* (6) */ 0 }, |
| 1065 |
[ 0x1b ] = { cmd_start_stop_unit, 0 }, |
| 1066 |
[ 0x1e ] = { cmd_prevent_allow_medium_removal, 0 }, |
| 1067 |
[ 0x25 ] = { cmd_read_cdvd_capacity, CHECK_READY },
|
| 1068 |
[ 0x28 ] = { cmd_read, /* (10) */ 0 }, |
| 1069 |
[ 0x2b ] = { cmd_seek, CHECK_READY },
|
| 1070 |
[ 0x43 ] = { cmd_read_toc_pma_atip, CHECK_READY },
|
| 1071 |
[ 0x46 ] = { cmd_get_configuration, ALLOW_UA },
|
| 1072 |
[ 0x4a ] = { cmd_get_event_status_notification, ALLOW_UA },
|
| 1073 |
[ 0x5a ] = { cmd_mode_sense, /* (10) */ 0 }, |
| 1074 |
[ 0xa8 ] = { cmd_read, /* (12) */ 0 }, |
| 1075 |
[ 0xad ] = { cmd_read_dvd_structure, 0 }, |
| 1076 |
[ 0xbb ] = { cmd_set_speed, 0 }, |
| 1077 |
[ 0xbd ] = { cmd_mechanism_status, 0 }, |
| 1078 |
[ 0xbe ] = { cmd_read_cd, 0 }, |
| 1079 |
}; |
| 1080 |
|
| 1081 |
void ide_atapi_cmd(IDEState *s)
|
| 1082 |
{
|
| 1083 |
uint8_t *buf; |
| 1084 |
|
| 1085 |
buf = s->io_buffer; |
| 1086 |
#ifdef DEBUG_IDE_ATAPI
|
| 1087 |
{
|
| 1088 |
int i;
|
| 1089 |
printf("ATAPI limit=0x%x packet:", s->lcyl | (s->hcyl << 8)); |
| 1090 |
for(i = 0; i < ATAPI_PACKET_SIZE; i++) { |
| 1091 |
printf(" %02x", buf[i]);
|
| 1092 |
} |
| 1093 |
printf("\n");
|
| 1094 |
} |
| 1095 |
#endif
|
| 1096 |
/*
|
| 1097 |
* If there's a UNIT_ATTENTION condition pending, only command flagged with
|
| 1098 |
* ALLOW_UA are allowed to complete. with other commands getting a CHECK
|
| 1099 |
* condition response unless a higher priority status, defined by the drive
|
| 1100 |
* here, is pending.
|
| 1101 |
*/
|
| 1102 |
if (s->sense_key == SENSE_UNIT_ATTENTION &&
|
| 1103 |
!(atapi_cmd_table[s->io_buffer[0]].flags & ALLOW_UA)) {
|
| 1104 |
ide_atapi_cmd_check_status(s); |
| 1105 |
return;
|
| 1106 |
} |
| 1107 |
/*
|
| 1108 |
* When a CD gets changed, we have to report an ejected state and
|
| 1109 |
* then a loaded state to guests so that they detect tray
|
| 1110 |
* open/close and media change events. Guests that do not use
|
| 1111 |
* GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
|
| 1112 |
* states rely on this behavior.
|
| 1113 |
*/
|
| 1114 |
if (bdrv_is_inserted(s->bs) && s->cdrom_changed) {
|
| 1115 |
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT); |
| 1116 |
|
| 1117 |
s->cdrom_changed = 0;
|
| 1118 |
s->sense_key = SENSE_UNIT_ATTENTION; |
| 1119 |
s->asc = ASC_MEDIUM_MAY_HAVE_CHANGED; |
| 1120 |
return;
|
| 1121 |
} |
| 1122 |
|
| 1123 |
/* Report a Not Ready condition if appropriate for the command */
|
| 1124 |
if ((atapi_cmd_table[s->io_buffer[0]].flags & CHECK_READY) && |
| 1125 |
(!media_present(s) || !bdrv_is_inserted(s->bs))) |
| 1126 |
{
|
| 1127 |
ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT); |
| 1128 |
return;
|
| 1129 |
} |
| 1130 |
|
| 1131 |
/* Execute the command */
|
| 1132 |
if (atapi_cmd_table[s->io_buffer[0]].handler) { |
| 1133 |
atapi_cmd_table[s->io_buffer[0]].handler(s, buf);
|
| 1134 |
return;
|
| 1135 |
} |
| 1136 |
|
| 1137 |
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, ASC_ILLEGAL_OPCODE); |
| 1138 |
} |