--- /dev/null
+/*
+ * QEMU ATAPI Emulation
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ * Copyright (c) 2006 Openedhand Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw/ide/internal.h"
+#include "hw/scsi/scsi.h"
+#include "sysemu/block-backend.h"
+
+static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret);
+
+static void padstr8(uint8_t *buf, int buf_size, const char *src)
+{
+ int i;
+ for(i = 0; i < buf_size; i++) {
+ if (*src)
+ buf[i] = *src++;
+ else
+ buf[i] = ' ';
+ }
+}
+
+static inline void cpu_to_ube16(uint8_t *buf, int val)
+{
+ buf[0] = val >> 8;
+ buf[1] = val & 0xff;
+}
+
+static inline void cpu_to_ube32(uint8_t *buf, unsigned int val)
+{
+ buf[0] = val >> 24;
+ buf[1] = val >> 16;
+ buf[2] = val >> 8;
+ buf[3] = val & 0xff;
+}
+
+static inline int ube16_to_cpu(const uint8_t *buf)
+{
+ return (buf[0] << 8) | buf[1];
+}
+
+static inline int ube32_to_cpu(const uint8_t *buf)
+{
+ return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+}
+
+static void lba_to_msf(uint8_t *buf, int lba)
+{
+ lba += 150;
+ buf[0] = (lba / 75) / 60;
+ buf[1] = (lba / 75) % 60;
+ buf[2] = lba % 75;
+}
+
+static inline int media_present(IDEState *s)
+{
+ return !s->tray_open && s->nb_sectors > 0;
+}
+
+/* XXX: DVDs that could fit on a CD will be reported as a CD */
+static inline int media_is_dvd(IDEState *s)
+{
+ return (media_present(s) && s->nb_sectors > CD_MAX_SECTORS);
+}
+
+static inline int media_is_cd(IDEState *s)
+{
+ return (media_present(s) && s->nb_sectors <= CD_MAX_SECTORS);
+}
+
+static void cd_data_to_raw(uint8_t *buf, int lba)
+{
+ /* sync bytes */
+ buf[0] = 0x00;
+ memset(buf + 1, 0xff, 10);
+ buf[11] = 0x00;
+ buf += 12;
+ /* MSF */
+ lba_to_msf(buf, lba);
+ buf[3] = 0x01; /* mode 1 data */
+ buf += 4;
+ /* data */
+ buf += 2048;
+ /* XXX: ECC not computed */
+ memset(buf, 0, 288);
+}
+
+static int cd_read_sector(IDEState *s, int lba, uint8_t *buf, int sector_size)
+{
+ int ret;
+
+ switch(sector_size) {
+ case 2048:
+ block_acct_start(blk_get_stats(s->blk), &s->acct,
+ 4 * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
+ ret = blk_read(s->blk, (int64_t)lba << 2, buf, 4);
+ block_acct_done(blk_get_stats(s->blk), &s->acct);
+ break;
+ case 2352:
+ block_acct_start(blk_get_stats(s->blk), &s->acct,
+ 4 * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
+ ret = blk_read(s->blk, (int64_t)lba << 2, buf + 16, 4);
+ block_acct_done(blk_get_stats(s->blk), &s->acct);
+ if (ret < 0)
+ return ret;
+ cd_data_to_raw(buf, lba);
+ break;
+ default:
+ ret = -EIO;
+ break;
+ }
+ return ret;
+}
+
+void ide_atapi_cmd_ok(IDEState *s)
+{
+ s->error = 0;
+ s->status = READY_STAT | SEEK_STAT;
+ s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
+ ide_transfer_stop(s);
+ ide_set_irq(s->bus);
+}
+
+void ide_atapi_cmd_error(IDEState *s, int sense_key, int asc)
+{
+#ifdef DEBUG_IDE_ATAPI
+ printf("atapi_cmd_error: sense=0x%x asc=0x%x\n", sense_key, asc);
+#endif
+ s->error = sense_key << 4;
+ s->status = READY_STAT | ERR_STAT;
+ s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
+ s->sense_key = sense_key;
+ s->asc = asc;
+ ide_transfer_stop(s);
+ ide_set_irq(s->bus);
+}
+
+void ide_atapi_io_error(IDEState *s, int ret)
+{
+ /* XXX: handle more errors */
+ if (ret == -ENOMEDIUM) {
+ ide_atapi_cmd_error(s, NOT_READY,
+ ASC_MEDIUM_NOT_PRESENT);
+ } else {
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_LOGICAL_BLOCK_OOR);
+ }
+}
+
+/* The whole ATAPI transfer logic is handled in this function */
+void ide_atapi_cmd_reply_end(IDEState *s)
+{
+ int byte_count_limit, size, ret;
+#ifdef DEBUG_IDE_ATAPI
+ printf("reply: tx_size=%d elem_tx_size=%d index=%d\n",
+ s->packet_transfer_size,
+ s->elementary_transfer_size,
+ s->io_buffer_index);
+#endif
+ if (s->packet_transfer_size <= 0) {
+ /* end of transfer */
+ ide_atapi_cmd_ok(s);
+ ide_set_irq(s->bus);
+#ifdef DEBUG_IDE_ATAPI
+ printf("status=0x%x\n", s->status);
+#endif
+ } else {
+ /* see if a new sector must be read */
+ if (s->lba != -1 && s->io_buffer_index >= s->cd_sector_size) {
+ ret = cd_read_sector(s, s->lba, s->io_buffer, s->cd_sector_size);
+ if (ret < 0) {
+ ide_atapi_io_error(s, ret);
+ return;
+ }
+ s->lba++;
+ s->io_buffer_index = 0;
+ }
+ if (s->elementary_transfer_size > 0) {
+ /* there are some data left to transmit in this elementary
+ transfer */
+ size = s->cd_sector_size - s->io_buffer_index;
+ if (size > s->elementary_transfer_size)
+ size = s->elementary_transfer_size;
+ s->packet_transfer_size -= size;
+ s->elementary_transfer_size -= size;
+ s->io_buffer_index += size;
+ ide_transfer_start(s, s->io_buffer + s->io_buffer_index - size,
+ size, ide_atapi_cmd_reply_end);
+ } else {
+ /* a new transfer is needed */
+ s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO;
+ byte_count_limit = s->lcyl | (s->hcyl << 8);
+#ifdef DEBUG_IDE_ATAPI
+ printf("byte_count_limit=%d\n", byte_count_limit);
+#endif
+ if (byte_count_limit == 0xffff)
+ byte_count_limit--;
+ size = s->packet_transfer_size;
+ if (size > byte_count_limit) {
+ /* byte count limit must be even if this case */
+ if (byte_count_limit & 1)
+ byte_count_limit--;
+ size = byte_count_limit;
+ }
+ s->lcyl = size;
+ s->hcyl = size >> 8;
+ s->elementary_transfer_size = size;
+ /* we cannot transmit more than one sector at a time */
+ if (s->lba != -1) {
+ if (size > (s->cd_sector_size - s->io_buffer_index))
+ size = (s->cd_sector_size - s->io_buffer_index);
+ }
+ s->packet_transfer_size -= size;
+ s->elementary_transfer_size -= size;
+ s->io_buffer_index += size;
+ ide_transfer_start(s, s->io_buffer + s->io_buffer_index - size,
+ size, ide_atapi_cmd_reply_end);
+ ide_set_irq(s->bus);
+#ifdef DEBUG_IDE_ATAPI
+ printf("status=0x%x\n", s->status);
+#endif
+ }
+ }
+}
+
+/* send a reply of 'size' bytes in s->io_buffer to an ATAPI command */
+static void ide_atapi_cmd_reply(IDEState *s, int size, int max_size)
+{
+ if (size > max_size)
+ size = max_size;
+ s->lba = -1; /* no sector read */
+ s->packet_transfer_size = size;
+ s->io_buffer_size = size; /* dma: send the reply data as one chunk */
+ s->elementary_transfer_size = 0;
+
+ if (s->atapi_dma) {
+ block_acct_start(blk_get_stats(s->blk), &s->acct, size,
+ BLOCK_ACCT_READ);
+ s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
+ ide_start_dma(s, ide_atapi_cmd_read_dma_cb);
+ } else {
+ s->status = READY_STAT | SEEK_STAT;
+ s->io_buffer_index = 0;
+ ide_atapi_cmd_reply_end(s);
+ }
+}
+
+/* start a CD-CDROM read command */
+static void ide_atapi_cmd_read_pio(IDEState *s, int lba, int nb_sectors,
+ int sector_size)
+{
+ s->lba = lba;
+ s->packet_transfer_size = nb_sectors * sector_size;
+ s->elementary_transfer_size = 0;
+ s->io_buffer_index = sector_size;
+ s->cd_sector_size = sector_size;
+
+ s->status = READY_STAT | SEEK_STAT;
+ ide_atapi_cmd_reply_end(s);
+}
+
+static void ide_atapi_cmd_check_status(IDEState *s)
+{
+#ifdef DEBUG_IDE_ATAPI
+ printf("atapi_cmd_check_status\n");
+#endif
+ s->error = MC_ERR | (UNIT_ATTENTION << 4);
+ s->status = ERR_STAT;
+ s->nsector = 0;
+ ide_set_irq(s->bus);
+}
+/* ATAPI DMA support */
+
+/* XXX: handle read errors */
+static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret)
+{
+ IDEState *s = opaque;
+ int data_offset, n;
+
+ if (ret < 0) {
+ ide_atapi_io_error(s, ret);
+ goto eot;
+ }
+
+ if (s->io_buffer_size > 0) {
+ /*
+ * For a cdrom read sector command (s->lba != -1),
+ * adjust the lba for the next s->io_buffer_size chunk
+ * and dma the current chunk.
+ * For a command != read (s->lba == -1), just transfer
+ * the reply data.
+ */
+ if (s->lba != -1) {
+ if (s->cd_sector_size == 2352) {
+ n = 1;
+ cd_data_to_raw(s->io_buffer, s->lba);
+ } else {
+ n = s->io_buffer_size >> 11;
+ }
+ s->lba += n;
+ }
+ s->packet_transfer_size -= s->io_buffer_size;
+ if (s->bus->dma->ops->rw_buf(s->bus->dma, 1) == 0)
+ goto eot;
+ }
+
+ if (s->packet_transfer_size <= 0) {
+ s->status = READY_STAT | SEEK_STAT;
+ s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
+ ide_set_irq(s->bus);
+ goto eot;
+ }
+
+ s->io_buffer_index = 0;
+ if (s->cd_sector_size == 2352) {
+ n = 1;
+ s->io_buffer_size = s->cd_sector_size;
+ data_offset = 16;
+ } else {
+ n = s->packet_transfer_size >> 11;
+ if (n > (IDE_DMA_BUF_SECTORS / 4))
+ n = (IDE_DMA_BUF_SECTORS / 4);
+ s->io_buffer_size = n * 2048;
+ data_offset = 0;
+ }
+#ifdef DEBUG_AIO
+ printf("aio_read_cd: lba=%u n=%d\n", s->lba, n);
+#endif
+
+ s->bus->dma->iov.iov_base = (void *)(s->io_buffer + data_offset);
+ s->bus->dma->iov.iov_len = n * 4 * 512;
+ qemu_iovec_init_external(&s->bus->dma->qiov, &s->bus->dma->iov, 1);
+
+ s->bus->dma->aiocb = blk_aio_readv(s->blk, (int64_t)s->lba << 2,
+ &s->bus->dma->qiov, n * 4,
+ ide_atapi_cmd_read_dma_cb, s);
+ return;
+
+eot:
+ block_acct_done(blk_get_stats(s->blk), &s->acct);
+ ide_set_inactive(s, false);
+}
+
+/* start a CD-CDROM read command with DMA */
+/* XXX: test if DMA is available */
+static void ide_atapi_cmd_read_dma(IDEState *s, int lba, int nb_sectors,
+ int sector_size)
+{
+ s->lba = lba;
+ s->packet_transfer_size = nb_sectors * sector_size;
+ s->io_buffer_size = 0;
+ s->cd_sector_size = sector_size;
+
+ block_acct_start(blk_get_stats(s->blk), &s->acct, s->packet_transfer_size,
+ BLOCK_ACCT_READ);
+
+ /* XXX: check if BUSY_STAT should be set */
+ s->status = READY_STAT | SEEK_STAT | DRQ_STAT | BUSY_STAT;
+ ide_start_dma(s, ide_atapi_cmd_read_dma_cb);
+}
+
+static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors,
+ int sector_size)
+{
+#ifdef DEBUG_IDE_ATAPI
+ printf("read %s: LBA=%d nb_sectors=%d\n", s->atapi_dma ? "dma" : "pio",
+ lba, nb_sectors);
+#endif
+ if (s->atapi_dma) {
+ ide_atapi_cmd_read_dma(s, lba, nb_sectors, sector_size);
+ } else {
+ ide_atapi_cmd_read_pio(s, lba, nb_sectors, sector_size);
+ }
+}
+
+
+/* Called by *_restart_bh when the transfer function points
+ * to ide_atapi_cmd
+ */
+void ide_atapi_dma_restart(IDEState *s)
+{
+ /*
+ * I'm not sure we have enough stored to restart the command
+ * safely, so give the guest an error it should recover from.
+ * I'm assuming most guests will try to recover from something
+ * listed as a medium error on a CD; it seems to work on Linux.
+ * This would be more of a problem if we did any other type of
+ * DMA operation.
+ */
+ ide_atapi_cmd_error(s, MEDIUM_ERROR, ASC_NO_SEEK_COMPLETE);
+}
+
+static inline uint8_t ide_atapi_set_profile(uint8_t *buf, uint8_t *index,
+ uint16_t profile)
+{
+ uint8_t *buf_profile = buf + 12; /* start of profiles */
+
+ buf_profile += ((*index) * 4); /* start of indexed profile */
+ cpu_to_ube16 (buf_profile, profile);
+ buf_profile[2] = ((buf_profile[0] == buf[6]) && (buf_profile[1] == buf[7]));
+
+ /* each profile adds 4 bytes to the response */
+ (*index)++;
+ buf[11] += 4; /* Additional Length */
+
+ return 4;
+}
+
+static int ide_dvd_read_structure(IDEState *s, int format,
+ const uint8_t *packet, uint8_t *buf)
+{
+ switch (format) {
+ case 0x0: /* Physical format information */
+ {
+ int layer = packet[6];
+ uint64_t total_sectors;
+
+ if (layer != 0)
+ return -ASC_INV_FIELD_IN_CMD_PACKET;
+
+ total_sectors = s->nb_sectors >> 2;
+ if (total_sectors == 0) {
+ return -ASC_MEDIUM_NOT_PRESENT;
+ }
+
+ buf[4] = 1; /* DVD-ROM, part version 1 */
+ buf[5] = 0xf; /* 120mm disc, minimum rate unspecified */
+ buf[6] = 1; /* one layer, read-only (per MMC-2 spec) */
+ buf[7] = 0; /* default densities */
+
+ /* FIXME: 0x30000 per spec? */
+ cpu_to_ube32(buf + 8, 0); /* start sector */
+ cpu_to_ube32(buf + 12, total_sectors - 1); /* end sector */
+ cpu_to_ube32(buf + 16, total_sectors - 1); /* l0 end sector */
+
+ /* Size of buffer, not including 2 byte size field */
+ stw_be_p(buf, 2048 + 2);
+
+ /* 2k data + 4 byte header */
+ return (2048 + 4);
+ }
+
+ case 0x01: /* DVD copyright information */
+ buf[4] = 0; /* no copyright data */
+ buf[5] = 0; /* no region restrictions */
+
+ /* Size of buffer, not including 2 byte size field */
+ stw_be_p(buf, 4 + 2);
+
+ /* 4 byte header + 4 byte data */
+ return (4 + 4);
+
+ case 0x03: /* BCA information - invalid field for no BCA info */
+ return -ASC_INV_FIELD_IN_CMD_PACKET;
+
+ case 0x04: /* DVD disc manufacturing information */
+ /* Size of buffer, not including 2 byte size field */
+ stw_be_p(buf, 2048 + 2);
+
+ /* 2k data + 4 byte header */
+ return (2048 + 4);
+
+ case 0xff:
+ /*
+ * This lists all the command capabilities above. Add new ones
+ * in order and update the length and buffer return values.
+ */
+
+ buf[4] = 0x00; /* Physical format */
+ buf[5] = 0x40; /* Not writable, is readable */
+ stw_be_p(buf + 6, 2048 + 4);
+
+ buf[8] = 0x01; /* Copyright info */
+ buf[9] = 0x40; /* Not writable, is readable */
+ stw_be_p(buf + 10, 4 + 4);
+
+ buf[12] = 0x03; /* BCA info */
+ buf[13] = 0x40; /* Not writable, is readable */
+ stw_be_p(buf + 14, 188 + 4);
+
+ buf[16] = 0x04; /* Manufacturing info */
+ buf[17] = 0x40; /* Not writable, is readable */
+ stw_be_p(buf + 18, 2048 + 4);
+
+ /* Size of buffer, not including 2 byte size field */
+ stw_be_p(buf, 16 + 2);
+
+ /* data written + 4 byte header */
+ return (16 + 4);
+
+ default: /* TODO: formats beyond DVD-ROM requires */
+ return -ASC_INV_FIELD_IN_CMD_PACKET;
+ }
+}
+
+static unsigned int event_status_media(IDEState *s,
+ uint8_t *buf)
+{
+ uint8_t event_code, media_status;
+
+ media_status = 0;
+ if (s->tray_open) {
+ media_status = MS_TRAY_OPEN;
+ } else if (blk_is_inserted(s->blk)) {
+ media_status = MS_MEDIA_PRESENT;
+ }
+
+ /* Event notification descriptor */
+ event_code = MEC_NO_CHANGE;
+ if (media_status != MS_TRAY_OPEN) {
+ if (s->events.new_media) {
+ event_code = MEC_NEW_MEDIA;
+ s->events.new_media = false;
+ } else if (s->events.eject_request) {
+ event_code = MEC_EJECT_REQUESTED;
+ s->events.eject_request = false;
+ }
+ }
+
+ buf[4] = event_code;
+ buf[5] = media_status;
+
+ /* These fields are reserved, just clear them. */
+ buf[6] = 0;
+ buf[7] = 0;
+
+ return 8; /* We wrote to 4 extra bytes from the header */
+}
+
+static void cmd_get_event_status_notification(IDEState *s,
+ uint8_t *buf)
+{
+ const uint8_t *packet = buf;
+
+ struct {
+ uint8_t opcode;
+ uint8_t polled; /* lsb bit is polled; others are reserved */
+ uint8_t reserved2[2];
+ uint8_t class;
+ uint8_t reserved3[2];
+ uint16_t len;
+ uint8_t control;
+ } QEMU_PACKED *gesn_cdb;
+
+ struct {
+ uint16_t len;
+ uint8_t notification_class;
+ uint8_t supported_events;
+ } QEMU_PACKED *gesn_event_header;
+ unsigned int max_len, used_len;
+
+ gesn_cdb = (void *)packet;
+ gesn_event_header = (void *)buf;
+
+ max_len = be16_to_cpu(gesn_cdb->len);
+
+ /* It is fine by the MMC spec to not support async mode operations */
+ if (!(gesn_cdb->polled & 0x01)) { /* asynchronous mode */
+ /* Only polling is supported, asynchronous mode is not. */
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ return;
+ }
+
+ /* polling mode operation */
+
+ /*
+ * These are the supported events.
+ *
+ * We currently only support requests of the 'media' type.
+ * Notification class requests and supported event classes are bitmasks,
+ * but they are build from the same values as the "notification class"
+ * field.
+ */
+ gesn_event_header->supported_events = 1 << GESN_MEDIA;
+
+ /*
+ * We use |= below to set the class field; other bits in this byte
+ * are reserved now but this is useful to do if we have to use the
+ * reserved fields later.
+ */
+ gesn_event_header->notification_class = 0;
+
+ /*
+ * Responses to requests are to be based on request priority. The
+ * notification_class_request_type enum above specifies the
+ * priority: upper elements are higher prio than lower ones.
+ */
+ if (gesn_cdb->class & (1 << GESN_MEDIA)) {
+ gesn_event_header->notification_class |= GESN_MEDIA;
+ used_len = event_status_media(s, buf);
+ } else {
+ gesn_event_header->notification_class = 0x80; /* No event available */
+ used_len = sizeof(*gesn_event_header);
+ }
+ gesn_event_header->len = cpu_to_be16(used_len
+ - sizeof(*gesn_event_header));
+ ide_atapi_cmd_reply(s, used_len, max_len);
+}
+
+static void cmd_request_sense(IDEState *s, uint8_t *buf)
+{
+ int max_len = buf[4];
+
+ memset(buf, 0, 18);
+ buf[0] = 0x70 | (1 << 7);
+ buf[2] = s->sense_key;
+ buf[7] = 10;
+ buf[12] = s->asc;
+
+ if (s->sense_key == UNIT_ATTENTION) {
+ s->sense_key = NO_SENSE;
+ }
+
+ ide_atapi_cmd_reply(s, 18, max_len);
+}
+
+static void cmd_inquiry(IDEState *s, uint8_t *buf)
+{
+ uint8_t page_code = buf[2];
+ int max_len = buf[4];
+
+ unsigned idx = 0;
+ unsigned size_idx;
+ unsigned preamble_len;
+
+ /* If the EVPD (Enable Vital Product Data) bit is set in byte 1,
+ * we are being asked for a specific page of info indicated by byte 2. */
+ if (buf[1] & 0x01) {
+ preamble_len = 4;
+ size_idx = 3;
+
+ buf[idx++] = 0x05; /* CD-ROM */
+ buf[idx++] = page_code; /* Page Code */
+ buf[idx++] = 0x00; /* reserved */
+ idx++; /* length (set later) */
+
+ switch (page_code) {
+ case 0x00:
+ /* Supported Pages: List of supported VPD responses. */
+ buf[idx++] = 0x00; /* 0x00: Supported Pages, and: */
+ buf[idx++] = 0x83; /* 0x83: Device Identification. */
+ break;
+
+ case 0x83:
+ /* Device Identification. Each entry is optional, but the entries
+ * included here are modeled after libata's VPD responses.
+ * If the response is given, at least one entry must be present. */
+
+ /* Entry 1: Serial */
+ if (idx + 24 > max_len) {
+ /* Not enough room for even the first entry: */
+ /* 4 byte header + 20 byte string */
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_DATA_PHASE_ERROR);
+ return;
+ }
+ buf[idx++] = 0x02; /* Ascii */
+ buf[idx++] = 0x00; /* Vendor Specific */
+ buf[idx++] = 0x00;
+ buf[idx++] = 20; /* Remaining length */
+ padstr8(buf + idx, 20, s->drive_serial_str);
+ idx += 20;
+
+ /* Entry 2: Drive Model and Serial */
+ if (idx + 72 > max_len) {
+ /* 4 (header) + 8 (vendor) + 60 (model & serial) */
+ goto out;
+ }
+ buf[idx++] = 0x02; /* Ascii */
+ buf[idx++] = 0x01; /* T10 Vendor */
+ buf[idx++] = 0x00;
+ buf[idx++] = 68;
+ padstr8(buf + idx, 8, "ATA"); /* Generic T10 vendor */
+ idx += 8;
+ padstr8(buf + idx, 40, s->drive_model_str);
+ idx += 40;
+ padstr8(buf + idx, 20, s->drive_serial_str);
+ idx += 20;
+
+ /* Entry 3: WWN */
+ if (s->wwn && (idx + 12 <= max_len)) {
+ /* 4 byte header + 8 byte wwn */
+ buf[idx++] = 0x01; /* Binary */
+ buf[idx++] = 0x03; /* NAA */
+ buf[idx++] = 0x00;
+ buf[idx++] = 0x08;
+ stq_be_p(&buf[idx], s->wwn);
+ idx += 8;
+ }
+ break;
+
+ default:
+ /* SPC-3, revision 23 sec. 6.4 */
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ return;
+ }
+ } else {
+ preamble_len = 5;
+ size_idx = 4;
+
+ buf[0] = 0x05; /* CD-ROM */
+ buf[1] = 0x80; /* removable */
+ buf[2] = 0x00; /* ISO */
+ buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
+ /* buf[size_idx] set below. */
+ buf[5] = 0; /* reserved */
+ buf[6] = 0; /* reserved */
+ buf[7] = 0; /* reserved */
+ padstr8(buf + 8, 8, "QEMU");
+ padstr8(buf + 16, 16, "QEMU DVD-ROM");
+ padstr8(buf + 32, 4, s->version);
+ idx = 36;
+ }
+
+ out:
+ buf[size_idx] = idx - preamble_len;
+ ide_atapi_cmd_reply(s, idx, max_len);
+ return;
+}
+
+static void cmd_get_configuration(IDEState *s, uint8_t *buf)
+{
+ uint32_t len;
+ uint8_t index = 0;
+ int max_len;
+
+ /* only feature 0 is supported */
+ if (buf[2] != 0 || buf[3] != 0) {
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ return;
+ }
+
+ /* XXX: could result in alignment problems in some architectures */
+ max_len = ube16_to_cpu(buf + 7);
+
+ /*
+ * XXX: avoid overflow for io_buffer if max_len is bigger than
+ * the size of that buffer (dimensioned to max number of
+ * sectors to transfer at once)
+ *
+ * Only a problem if the feature/profiles grow.
+ */
+ if (max_len > 512) {
+ /* XXX: assume 1 sector */
+ max_len = 512;
+ }
+
+ memset(buf, 0, max_len);
+ /*
+ * the number of sectors from the media tells us which profile
+ * to use as current. 0 means there is no media
+ */
+ if (media_is_dvd(s)) {
+ cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM);
+ } else if (media_is_cd(s)) {
+ cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM);
+ }
+
+ buf[10] = 0x02 | 0x01; /* persistent and current */
+ len = 12; /* headers: 8 + 4 */
+ len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM);
+ len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM);
+ cpu_to_ube32(buf, len - 4); /* data length */
+
+ ide_atapi_cmd_reply(s, len, max_len);
+}
+
+static void cmd_mode_sense(IDEState *s, uint8_t *buf)
+{
+ int action, code;
+ int max_len;
+
+ max_len = ube16_to_cpu(buf + 7);
+ action = buf[2] >> 6;
+ code = buf[2] & 0x3f;
+
+ switch(action) {
+ case 0: /* current values */
+ switch(code) {
+ case MODE_PAGE_R_W_ERROR: /* error recovery */
+ cpu_to_ube16(&buf[0], 16 - 2);
+ buf[2] = 0x70;
+ buf[3] = 0;
+ buf[4] = 0;
+ buf[5] = 0;
+ buf[6] = 0;
+ buf[7] = 0;
+
+ buf[8] = MODE_PAGE_R_W_ERROR;
+ buf[9] = 16 - 10;
+ buf[10] = 0x00;
+ buf[11] = 0x05;
+ buf[12] = 0x00;
+ buf[13] = 0x00;
+ buf[14] = 0x00;
+ buf[15] = 0x00;
+ ide_atapi_cmd_reply(s, 16, max_len);
+ break;
+ case MODE_PAGE_AUDIO_CTL:
+ cpu_to_ube16(&buf[0], 24 - 2);
+ buf[2] = 0x70;
+ buf[3] = 0;
+ buf[4] = 0;
+ buf[5] = 0;
+ buf[6] = 0;
+ buf[7] = 0;
+
+ buf[8] = MODE_PAGE_AUDIO_CTL;
+ buf[9] = 24 - 10;
+ /* Fill with CDROM audio volume */
+ buf[17] = 0;
+ buf[19] = 0;
+ buf[21] = 0;
+ buf[23] = 0;
+
+ ide_atapi_cmd_reply(s, 24, max_len);
+ break;
+ case MODE_PAGE_CAPABILITIES:
+ cpu_to_ube16(&buf[0], 30 - 2);
+ buf[2] = 0x70;
+ buf[3] = 0;
+ buf[4] = 0;
+ buf[5] = 0;
+ buf[6] = 0;
+ buf[7] = 0;
+
+ buf[8] = MODE_PAGE_CAPABILITIES;
+ buf[9] = 30 - 10;
+ buf[10] = 0x3b; /* read CDR/CDRW/DVDROM/DVDR/DVDRAM */
+ buf[11] = 0x00;
+
+ /* Claim PLAY_AUDIO capability (0x01) since some Linux
+ code checks for this to automount media. */
+ buf[12] = 0x71;
+ buf[13] = 3 << 5;
+ buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
+ if (s->tray_locked) {
+ buf[14] |= 1 << 1;
+ }
+ buf[15] = 0x00; /* No volume & mute control, no changer */
+ cpu_to_ube16(&buf[16], 704); /* 4x read speed */
+ buf[18] = 0; /* Two volume levels */
+ buf[19] = 2;
+ cpu_to_ube16(&buf[20], 512); /* 512k buffer */
+ cpu_to_ube16(&buf[22], 704); /* 4x read speed current */
+ buf[24] = 0;
+ buf[25] = 0;
+ buf[26] = 0;
+ buf[27] = 0;
+ buf[28] = 0;
+ buf[29] = 0;
+ ide_atapi_cmd_reply(s, 30, max_len);
+ break;
+ default:
+ goto error_cmd;
+ }
+ break;
+ case 1: /* changeable values */
+ goto error_cmd;
+ case 2: /* default values */
+ goto error_cmd;
+ default:
+ case 3: /* saved values */
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
+ break;
+ }
+ return;
+
+error_cmd:
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
+}
+
+static void cmd_test_unit_ready(IDEState *s, uint8_t *buf)
+{
+ /* Not Ready Conditions are already handled in ide_atapi_cmd(), so if we
+ * come here, we know that it's ready. */
+ ide_atapi_cmd_ok(s);
+}
+
+static void cmd_prevent_allow_medium_removal(IDEState *s, uint8_t* buf)
+{
+ s->tray_locked = buf[4] & 1;
+ blk_lock_medium(s->blk, buf[4] & 1);
+ ide_atapi_cmd_ok(s);
+}
+
+static void cmd_read(IDEState *s, uint8_t* buf)
+{
+ int nb_sectors, lba;
+
+ if (buf[0] == GPCMD_READ_10) {
+ nb_sectors = ube16_to_cpu(buf + 7);
+ } else {
+ nb_sectors = ube32_to_cpu(buf + 6);
+ }
+
+ lba = ube32_to_cpu(buf + 2);
+ if (nb_sectors == 0) {
+ ide_atapi_cmd_ok(s);
+ return;
+ }
+
+ ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
+}
+
+static void cmd_read_cd(IDEState *s, uint8_t* buf)
+{
+ int nb_sectors, lba, transfer_request;
+
+ nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8];
+ lba = ube32_to_cpu(buf + 2);
+
+ if (nb_sectors == 0) {
+ ide_atapi_cmd_ok(s);
+ return;
+ }
+
+ transfer_request = buf[9];
+ switch(transfer_request & 0xf8) {
+ case 0x00:
+ /* nothing */
+ ide_atapi_cmd_ok(s);
+ break;
+ case 0x10:
+ /* normal read */
+ ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
+ break;
+ case 0xf8:
+ /* read all data */
+ ide_atapi_cmd_read(s, lba, nb_sectors, 2352);
+ break;
+ default:
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ break;
+ }
+}
+
+static void cmd_seek(IDEState *s, uint8_t* buf)
+{
+ unsigned int lba;
+ uint64_t total_sectors = s->nb_sectors >> 2;
+
+ lba = ube32_to_cpu(buf + 2);
+ if (lba >= total_sectors) {
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
+ return;
+ }
+
+ ide_atapi_cmd_ok(s);
+}
+
+static void cmd_start_stop_unit(IDEState *s, uint8_t* buf)
+{
+ int sense;
+ bool start = buf[4] & 1;
+ bool loej = buf[4] & 2; /* load on start, eject on !start */
+ int pwrcnd = buf[4] & 0xf0;
+
+ if (pwrcnd) {
+ /* eject/load only happens for power condition == 0 */
+ ide_atapi_cmd_ok(s);
+ return;
+ }
+
+ if (loej) {
+ if (!start && !s->tray_open && s->tray_locked) {
+ sense = blk_is_inserted(s->blk)
+ ? NOT_READY : ILLEGAL_REQUEST;
+ ide_atapi_cmd_error(s, sense, ASC_MEDIA_REMOVAL_PREVENTED);
+ return;
+ }
+
+ if (s->tray_open != !start) {
+ blk_eject(s->blk, !start);
+ s->tray_open = !start;
+ }
+ }
+
+ ide_atapi_cmd_ok(s);
+}
+
+static void cmd_mechanism_status(IDEState *s, uint8_t* buf)
+{
+ int max_len = ube16_to_cpu(buf + 8);
+
+ cpu_to_ube16(buf, 0);
+ /* no current LBA */
+ buf[2] = 0;
+ buf[3] = 0;
+ buf[4] = 0;
+ buf[5] = 1;
+ cpu_to_ube16(buf + 6, 0);
+ ide_atapi_cmd_reply(s, 8, max_len);
+}
+
+static void cmd_read_toc_pma_atip(IDEState *s, uint8_t* buf)
+{
+ int format, msf, start_track, len;
+ int max_len;
+ uint64_t total_sectors = s->nb_sectors >> 2;
+
+ max_len = ube16_to_cpu(buf + 7);
+ format = buf[9] >> 6;
+ msf = (buf[1] >> 1) & 1;
+ start_track = buf[6];
+
+ switch(format) {
+ case 0:
+ len = cdrom_read_toc(total_sectors, buf, msf, start_track);
+ if (len < 0)
+ goto error_cmd;
+ ide_atapi_cmd_reply(s, len, max_len);
+ break;
+ case 1:
+ /* multi session : only a single session defined */
+ memset(buf, 0, 12);
+ buf[1] = 0x0a;
+ buf[2] = 0x01;
+ buf[3] = 0x01;
+ ide_atapi_cmd_reply(s, 12, max_len);
+ break;
+ case 2:
+ len = cdrom_read_toc_raw(total_sectors, buf, msf, start_track);
+ if (len < 0)
+ goto error_cmd;
+ ide_atapi_cmd_reply(s, len, max_len);
+ break;
+ default:
+ error_cmd:
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ }
+}
+
+static void cmd_read_cdvd_capacity(IDEState *s, uint8_t* buf)
+{
+ uint64_t total_sectors = s->nb_sectors >> 2;
+
+ /* NOTE: it is really the number of sectors minus 1 */
+ cpu_to_ube32(buf, total_sectors - 1);
+ cpu_to_ube32(buf + 4, 2048);
+ ide_atapi_cmd_reply(s, 8, 8);
+}
+
+static void cmd_read_disc_information(IDEState *s, uint8_t* buf)
+{
+ uint8_t type = buf[1] & 7;
+ uint32_t max_len = ube16_to_cpu(buf + 7);
+
+ /* Types 1/2 are only defined for Blu-Ray. */
+ if (type != 0) {
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ return;
+ }
+
+ memset(buf, 0, 34);
+ buf[1] = 32;
+ buf[2] = 0xe; /* last session complete, disc finalized */
+ buf[3] = 1; /* first track on disc */
+ buf[4] = 1; /* # of sessions */
+ buf[5] = 1; /* first track of last session */
+ buf[6] = 1; /* last track of last session */
+ buf[7] = 0x20; /* unrestricted use */
+ buf[8] = 0x00; /* CD-ROM or DVD-ROM */
+ /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
+ /* 12-23: not meaningful for CD-ROM or DVD-ROM */
+ /* 24-31: disc bar code */
+ /* 32: disc application code */
+ /* 33: number of OPC tables */
+
+ ide_atapi_cmd_reply(s, 34, max_len);
+}
+
+static void cmd_read_dvd_structure(IDEState *s, uint8_t* buf)
+{
+ int max_len;
+ int media = buf[1];
+ int format = buf[7];
+ int ret;
+
+ max_len = ube16_to_cpu(buf + 8);
+
+ if (format < 0xff) {
+ if (media_is_cd(s)) {
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_INCOMPATIBLE_FORMAT);
+ return;
+ } else if (!media_present(s)) {
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ return;
+ }
+ }
+
+ memset(buf, 0, max_len > IDE_DMA_BUF_SECTORS * 512 + 4 ?
+ IDE_DMA_BUF_SECTORS * 512 + 4 : max_len);
+
+ switch (format) {
+ case 0x00 ... 0x7f:
+ case 0xff:
+ if (media == 0) {
+ ret = ide_dvd_read_structure(s, format, buf, buf);
+
+ if (ret < 0) {
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST, -ret);
+ } else {
+ ide_atapi_cmd_reply(s, ret, max_len);
+ }
+
+ break;
+ }
+ /* TODO: BD support, fall through for now */
+
+ /* Generic disk structures */
+ case 0x80: /* TODO: AACS volume identifier */
+ case 0x81: /* TODO: AACS media serial number */
+ case 0x82: /* TODO: AACS media identifier */
+ case 0x83: /* TODO: AACS media key block */
+ case 0x90: /* TODO: List of recognized format layers */
+ case 0xc0: /* TODO: Write protection status */
+ default:
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ break;
+ }
+}
+
+static void cmd_set_speed(IDEState *s, uint8_t* buf)
+{
+ ide_atapi_cmd_ok(s);
+}
+
+enum {
+ /*
+ * Only commands flagged as ALLOW_UA are allowed to run under a
+ * unit attention condition. (See MMC-5, section 4.1.6.1)
+ */
+ ALLOW_UA = 0x01,
+
+ /*
+ * Commands flagged with CHECK_READY can only execute if a medium is present.
+ * Otherwise they report the Not Ready Condition. (See MMC-5, section
+ * 4.1.8)
+ */
+ CHECK_READY = 0x02,
+};
+
+static const struct {
+ void (*handler)(IDEState *s, uint8_t *buf);
+ int flags;
+} atapi_cmd_table[0x100] = {
+ [ 0x00 ] = { cmd_test_unit_ready, CHECK_READY },
+ [ 0x03 ] = { cmd_request_sense, ALLOW_UA },
+ [ 0x12 ] = { cmd_inquiry, ALLOW_UA },
+ [ 0x1b ] = { cmd_start_stop_unit, 0 }, /* [1] */
+ [ 0x1e ] = { cmd_prevent_allow_medium_removal, 0 },
+ [ 0x25 ] = { cmd_read_cdvd_capacity, CHECK_READY },
+ [ 0x28 ] = { cmd_read, /* (10) */ CHECK_READY },
+ [ 0x2b ] = { cmd_seek, CHECK_READY },
+ [ 0x43 ] = { cmd_read_toc_pma_atip, CHECK_READY },
+ [ 0x46 ] = { cmd_get_configuration, ALLOW_UA },
+ [ 0x4a ] = { cmd_get_event_status_notification, ALLOW_UA },
+ [ 0x51 ] = { cmd_read_disc_information, CHECK_READY },
+ [ 0x5a ] = { cmd_mode_sense, /* (10) */ 0 },
+ [ 0xa8 ] = { cmd_read, /* (12) */ CHECK_READY },
+ [ 0xad ] = { cmd_read_dvd_structure, CHECK_READY },
+ [ 0xbb ] = { cmd_set_speed, 0 },
+ [ 0xbd ] = { cmd_mechanism_status, 0 },
+ [ 0xbe ] = { cmd_read_cd, CHECK_READY },
+ /* [1] handler detects and reports not ready condition itself */
+};
+
+void ide_atapi_cmd(IDEState *s)
+{
+ uint8_t *buf;
+
+ buf = s->io_buffer;
+#ifdef DEBUG_IDE_ATAPI
+ {
+ int i;
+ printf("ATAPI limit=0x%x packet:", s->lcyl | (s->hcyl << 8));
+ for(i = 0; i < ATAPI_PACKET_SIZE; i++) {
+ printf(" %02x", buf[i]);
+ }
+ printf("\n");
+ }
+#endif
+ /*
+ * If there's a UNIT_ATTENTION condition pending, only command flagged with
+ * ALLOW_UA are allowed to complete. with other commands getting a CHECK
+ * condition response unless a higher priority status, defined by the drive
+ * here, is pending.
+ */
+ if (s->sense_key == UNIT_ATTENTION &&
+ !(atapi_cmd_table[s->io_buffer[0]].flags & ALLOW_UA)) {
+ ide_atapi_cmd_check_status(s);
+ return;
+ }
+ /*
+ * When a CD gets changed, we have to report an ejected state and
+ * then a loaded state to guests so that they detect tray
+ * open/close and media change events. Guests that do not use
+ * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
+ * states rely on this behavior.
+ */
+ if (!(atapi_cmd_table[s->io_buffer[0]].flags & ALLOW_UA) &&
+ !s->tray_open && blk_is_inserted(s->blk) && s->cdrom_changed) {
+
+ if (s->cdrom_changed == 1) {
+ ide_atapi_cmd_error(s, NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ s->cdrom_changed = 2;
+ } else {
+ ide_atapi_cmd_error(s, UNIT_ATTENTION, ASC_MEDIUM_MAY_HAVE_CHANGED);
+ s->cdrom_changed = 0;
+ }
+
+ return;
+ }
+
+ /* Report a Not Ready condition if appropriate for the command */
+ if ((atapi_cmd_table[s->io_buffer[0]].flags & CHECK_READY) &&
+ (!media_present(s) || !blk_is_inserted(s->blk)))
+ {
+ ide_atapi_cmd_error(s, NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ return;
+ }
+
+ /* Execute the command */
+ if (atapi_cmd_table[s->io_buffer[0]].handler) {
+ atapi_cmd_table[s->io_buffer[0]].handler(s, buf);
+ return;
+ }
+
+ ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_ILLEGAL_OPCODE);
+}
Code Review / kvmfornfv.git / blobdiff