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authorKevin Wolf <kwolf@redhat.com>2011-04-18 16:45:49 +0200
committerKevin Wolf <kwolf@redhat.com>2011-04-27 16:20:27 +0200
commit33231e0e221543759b11a4a79b54b9a88d4b455e (patch)
tree349dc1e8c186f51e142869917e65e091ee7c821c /hw/ide/atapi.c
parentff5c52a379b9fddaf512907e9ffdc275a722e65a (diff)
ide: Split atapi.c out
Besides moving code, this patch only fixes some whitespace issues in the moved code and makes all functions in atapi.c static which can be static. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw/ide/atapi.c')
-rw-r--r--hw/ide/atapi.c1083
1 files changed, 1083 insertions, 0 deletions
diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
new file mode 100644
index 0000000000..0edfd580f2
--- /dev/null
+++ b/hw/ide/atapi.c
@@ -0,0 +1,1083 @@
+/*
+ * 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.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;
+}
+
+/* XXX: DVDs that could fit on a CD will be reported as a CD */
+static inline int media_present(IDEState *s)
+{
+ return (s->nb_sectors > 0);
+}
+
+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(BlockDriverState *bs, int lba, uint8_t *buf,
+ int sector_size)
+{
+ int ret;
+
+ switch(sector_size) {
+ case 2048:
+ ret = bdrv_read(bs, (int64_t)lba << 2, buf, 4);
+ break;
+ case 2352:
+ ret = bdrv_read(bs, (int64_t)lba << 2, buf + 16, 4);
+ 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_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_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, SENSE_NOT_READY,
+ ASC_MEDIUM_NOT_PRESENT);
+ } else {
+ ide_atapi_cmd_error(s, SENSE_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_transfer_stop(s);
+ s->status = READY_STAT | SEEK_STAT;
+ s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
+ 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->bs, s->lba, s->io_buffer, s->cd_sector_size);
+ if (ret < 0) {
+ ide_transfer_stop(s);
+ 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;
+ s->io_buffer_index = 0;
+
+ if (s->atapi_dma) {
+ s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
+ s->bus->dma->ops->start_dma(s->bus->dma, s,
+ ide_atapi_cmd_read_dma_cb);
+ } else {
+ s->status = READY_STAT | SEEK_STAT;
+ 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 | (SENSE_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);
+ eot:
+ s->bus->dma->ops->add_status(s->bus->dma, BM_STATUS_INT);
+ ide_set_inactive(s);
+ return;
+ }
+
+ 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 = bdrv_aio_readv(s->bs, (int64_t)s->lba << 2,
+ &s->bus->dma->qiov, n * 4,
+ ide_atapi_cmd_read_dma_cb, s);
+ if (!s->bus->dma->aiocb) {
+ /* Note: media not present is the most likely case */
+ ide_atapi_cmd_error(s, SENSE_NOT_READY,
+ ASC_MEDIUM_NOT_PRESENT);
+ goto eot;
+ }
+}
+
+/* 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_index = 0;
+ s->io_buffer_size = 0;
+ s->cd_sector_size = sector_size;
+
+ /* XXX: check if BUSY_STAT should be set */
+ s->status = READY_STAT | SEEK_STAT | DRQ_STAT | BUSY_STAT;
+ s->bus->dma->ops->start_dma(s->bus->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);
+ }
+}
+
+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;
+
+ bdrv_get_geometry(s->bs, &total_sectors);
+ total_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 */
+ cpu_to_be16wu((uint16_t *)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 */
+ cpu_to_be16wu((uint16_t *)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 */
+ cpu_to_be16wu((uint16_t *)buf, 2048 + 2);
+
+ /* 2k data + 4 byte header */
+ return (2048 + 4);
+
+ case 0xff:
+ /*
+ * This lists all the command capabilities above. Add new ones
+ * in order and update the length and buffer return values.
+ */
+
+ buf[4] = 0x00; /* Physical format */
+ buf[5] = 0x40; /* Not writable, is readable */
+ cpu_to_be16wu((uint16_t *)(buf + 6), 2048 + 4);
+
+ buf[8] = 0x01; /* Copyright info */
+ buf[9] = 0x40; /* Not writable, is readable */
+ cpu_to_be16wu((uint16_t *)(buf + 10), 4 + 4);
+
+ buf[12] = 0x03; /* BCA info */
+ buf[13] = 0x40; /* Not writable, is readable */
+ cpu_to_be16wu((uint16_t *)(buf + 14), 188 + 4);
+
+ buf[16] = 0x04; /* Manufacturing info */
+ buf[17] = 0x40; /* Not writable, is readable */
+ cpu_to_be16wu((uint16_t *)(buf + 18), 2048 + 4);
+
+ /* Size of buffer, not including 2 byte size field */
+ cpu_to_be16wu((uint16_t *)buf, 16 + 2);
+
+ /* data written + 4 byte header */
+ return (16 + 4);
+
+ default: /* TODO: formats beyond DVD-ROM requires */
+ return -ASC_INV_FIELD_IN_CMD_PACKET;
+ }
+}
+
+static unsigned int event_status_media(IDEState *s,
+ uint8_t *buf)
+{
+ enum media_event_code {
+ MEC_NO_CHANGE = 0, /* Status unchanged */
+ MEC_EJECT_REQUESTED, /* received a request from user to eject */
+ MEC_NEW_MEDIA, /* new media inserted and ready for access */
+ MEC_MEDIA_REMOVAL, /* only for media changers */
+ MEC_MEDIA_CHANGED, /* only for media changers */
+ MEC_BG_FORMAT_COMPLETED, /* MRW or DVD+RW b/g format completed */
+ MEC_BG_FORMAT_RESTARTED, /* MRW or DVD+RW b/g format restarted */
+ };
+ enum media_status {
+ MS_TRAY_OPEN = 1,
+ MS_MEDIA_PRESENT = 2,
+ };
+ uint8_t event_code, media_status;
+
+ media_status = 0;
+ if (s->bs->tray_open) {
+ media_status = MS_TRAY_OPEN;
+ } else if (bdrv_is_inserted(s->bs)) {
+ media_status = MS_MEDIA_PRESENT;
+ }
+
+ /* Event notification descriptor */
+ event_code = MEC_NO_CHANGE;
+ if (media_status != MS_TRAY_OPEN && s->events.new_media) {
+ event_code = MEC_NEW_MEDIA;
+ s->events.new_media = false;
+ }
+
+ buf[4] = event_code;
+ buf[5] = media_status;
+
+ /* These fields are reserved, just clear them. */
+ buf[6] = 0;
+ buf[7] = 0;
+
+ return 8; /* We wrote to 4 extra bytes from the header */
+}
+
+static void handle_get_event_status_notification(IDEState *s,
+ uint8_t *buf,
+ const uint8_t *packet)
+{
+ 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;
+ } __attribute__((packed)) *gesn_cdb;
+
+ struct {
+ uint16_t len;
+ uint8_t notification_class;
+ uint8_t supported_events;
+ } __attribute((packed)) *gesn_event_header;
+
+ enum notification_class_request_type {
+ NCR_RESERVED1 = 1 << 0,
+ NCR_OPERATIONAL_CHANGE = 1 << 1,
+ NCR_POWER_MANAGEMENT = 1 << 2,
+ NCR_EXTERNAL_REQUEST = 1 << 3,
+ NCR_MEDIA = 1 << 4,
+ NCR_MULTI_HOST = 1 << 5,
+ NCR_DEVICE_BUSY = 1 << 6,
+ NCR_RESERVED2 = 1 << 7,
+ };
+ enum event_notification_class_field {
+ ENC_NO_EVENTS = 0,
+ ENC_OPERATIONAL_CHANGE,
+ ENC_POWER_MANAGEMENT,
+ ENC_EXTERNAL_REQUEST,
+ ENC_MEDIA,
+ ENC_MULTIPLE_HOSTS,
+ ENC_DEVICE_BUSY,
+ ENC_RESERVED,
+ };
+ unsigned int max_len, used_len;
+
+ gesn_cdb = (void *)packet;
+ gesn_event_header = (void *)buf;
+
+ max_len = be16_to_cpu(gesn_cdb->len);
+
+ /* It is fine by the MMC spec to not support async mode operations */
+ if (!(gesn_cdb->polled & 0x01)) { /* asynchronous mode */
+ /* Only polling is supported, asynchronous mode is not. */
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ return;
+ }
+
+ /* polling mode operation */
+
+ /*
+ * These are the supported events.
+ *
+ * We currently only support requests of the 'media' type.
+ */
+ gesn_event_header->supported_events = NCR_MEDIA;
+
+ /*
+ * We use |= below to set the class field; other bits in this byte
+ * are reserved now but this is useful to do if we have to use the
+ * reserved fields later.
+ */
+ gesn_event_header->notification_class = 0;
+
+ /*
+ * Responses to requests are to be based on request priority. The
+ * notification_class_request_type enum above specifies the
+ * priority: upper elements are higher prio than lower ones.
+ */
+ if (gesn_cdb->class & NCR_MEDIA) {
+ gesn_event_header->notification_class |= ENC_MEDIA;
+ used_len = event_status_media(s, buf);
+ } else {
+ gesn_event_header->notification_class = 0x80; /* No event available */
+ used_len = sizeof(*gesn_event_header);
+ }
+ gesn_event_header->len = cpu_to_be16(used_len
+ - sizeof(*gesn_event_header));
+ ide_atapi_cmd_reply(s, used_len, max_len);
+}
+
+void ide_atapi_cmd(IDEState *s)
+{
+ const uint8_t *packet;
+ uint8_t *buf;
+ int max_len;
+
+ packet = s->io_buffer;
+ 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", packet[i]);
+ }
+ printf("\n");
+ }
+#endif
+ /*
+ * If there's a UNIT_ATTENTION condition pending, only
+ * REQUEST_SENSE, INQUIRY, GET_CONFIGURATION and
+ * GET_EVENT_STATUS_NOTIFICATION commands are allowed to complete.
+ * MMC-5, section 4.1.6.1 lists only these commands being allowed
+ * to complete, with other commands getting a CHECK condition
+ * response unless a higher priority status, defined by the drive
+ * here, is pending.
+ */
+ if (s->sense_key == SENSE_UNIT_ATTENTION &&
+ s->io_buffer[0] != GPCMD_REQUEST_SENSE &&
+ s->io_buffer[0] != GPCMD_INQUIRY &&
+ s->io_buffer[0] != GPCMD_GET_EVENT_STATUS_NOTIFICATION) {
+ ide_atapi_cmd_check_status(s);
+ return;
+ }
+ if (bdrv_is_inserted(s->bs) && s->cdrom_changed) {
+ ide_atapi_cmd_error(s, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+
+ s->cdrom_changed = 0;
+ s->sense_key = SENSE_UNIT_ATTENTION;
+ s->asc = ASC_MEDIUM_MAY_HAVE_CHANGED;
+ return;
+ }
+ switch(s->io_buffer[0]) {
+ case GPCMD_TEST_UNIT_READY:
+ if (bdrv_is_inserted(s->bs)) {
+ ide_atapi_cmd_ok(s);
+ } else {
+ ide_atapi_cmd_error(s, SENSE_NOT_READY,
+ ASC_MEDIUM_NOT_PRESENT);
+ }
+ break;
+ case GPCMD_MODE_SENSE_6:
+ case GPCMD_MODE_SENSE_10:
+ {
+ int action, code;
+ if (packet[0] == GPCMD_MODE_SENSE_10)
+ max_len = ube16_to_cpu(packet + 7);
+ else
+ max_len = packet[4];
+ action = packet[2] >> 6;
+ code = packet[2] & 0x3f;
+ switch(action) {
+ case 0: /* current values */
+ switch(code) {
+ case GPMODE_R_W_ERROR_PAGE: /* error recovery */
+ cpu_to_ube16(&buf[0], 16 + 6);
+ buf[2] = 0x70;
+ buf[3] = 0;
+ buf[4] = 0;
+ buf[5] = 0;
+ buf[6] = 0;
+ buf[7] = 0;
+
+ buf[8] = 0x01;
+ buf[9] = 0x06;
+ buf[10] = 0x00;
+ buf[11] = 0x05;
+ buf[12] = 0x00;
+ buf[13] = 0x00;
+ buf[14] = 0x00;
+ buf[15] = 0x00;
+ ide_atapi_cmd_reply(s, 16, max_len);
+ break;
+ case GPMODE_AUDIO_CTL_PAGE:
+ cpu_to_ube16(&buf[0], 24 + 6);
+ buf[2] = 0x70;
+ buf[3] = 0;
+ buf[4] = 0;
+ buf[5] = 0;
+ buf[6] = 0;
+ buf[7] = 0;
+
+ /* Fill with CDROM audio volume */
+ buf[17] = 0;
+ buf[19] = 0;
+ buf[21] = 0;
+ buf[23] = 0;
+
+ ide_atapi_cmd_reply(s, 24, max_len);
+ break;
+ case GPMODE_CAPABILITIES_PAGE:
+ cpu_to_ube16(&buf[0], 28 + 6);
+ buf[2] = 0x70;
+ buf[3] = 0;
+ buf[4] = 0;
+ buf[5] = 0;
+ buf[6] = 0;
+ buf[7] = 0;
+
+ buf[8] = 0x2a;
+ buf[9] = 0x12;
+ buf[10] = 0x00;
+ buf[11] = 0x00;
+
+ /* Claim PLAY_AUDIO capability (0x01) since some Linux
+ code checks for this to automount media. */
+ buf[12] = 0x71;
+ buf[13] = 3 << 5;
+ buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
+ if (bdrv_is_locked(s->bs))
+ buf[6] |= 1 << 1;
+ buf[15] = 0x00;
+ cpu_to_ube16(&buf[16], 706);
+ buf[18] = 0;
+ buf[19] = 2;
+ cpu_to_ube16(&buf[20], 512);
+ cpu_to_ube16(&buf[22], 706);
+ buf[24] = 0;
+ buf[25] = 0;
+ buf[26] = 0;
+ buf[27] = 0;
+ ide_atapi_cmd_reply(s, 28, max_len);
+ break;
+ default:
+ goto error_cmd;
+ }
+ break;
+ case 1: /* changeable values */
+ goto error_cmd;
+ case 2: /* default values */
+ goto error_cmd;
+ default:
+ case 3: /* saved values */
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
+ break;
+ }
+ }
+ break;
+ case GPCMD_REQUEST_SENSE:
+ max_len = packet[4];
+ memset(buf, 0, 18);
+ buf[0] = 0x70 | (1 << 7);
+ buf[2] = s->sense_key;
+ buf[7] = 10;
+ buf[12] = s->asc;
+ if (s->sense_key == SENSE_UNIT_ATTENTION)
+ s->sense_key = SENSE_NONE;
+ ide_atapi_cmd_reply(s, 18, max_len);
+ break;
+ case GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
+ bdrv_set_locked(s->bs, packet[4] & 1);
+ ide_atapi_cmd_ok(s);
+ break;
+ case GPCMD_READ_10:
+ case GPCMD_READ_12:
+ {
+ int nb_sectors, lba;
+
+ if (packet[0] == GPCMD_READ_10)
+ nb_sectors = ube16_to_cpu(packet + 7);
+ else
+ nb_sectors = ube32_to_cpu(packet + 6);
+ lba = ube32_to_cpu(packet + 2);
+ if (nb_sectors == 0) {
+ ide_atapi_cmd_ok(s);
+ break;
+ }
+ ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
+ }
+ break;
+ case GPCMD_READ_CD:
+ {
+ int nb_sectors, lba, transfer_request;
+
+ nb_sectors = (packet[6] << 16) | (packet[7] << 8) | packet[8];
+ lba = ube32_to_cpu(packet + 2);
+ if (nb_sectors == 0) {
+ ide_atapi_cmd_ok(s);
+ break;
+ }
+ transfer_request = packet[9];
+ switch(transfer_request & 0xf8) {
+ case 0x00:
+ /* nothing */
+ ide_atapi_cmd_ok(s);
+ break;
+ case 0x10:
+ /* normal read */
+ ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
+ break;
+ case 0xf8:
+ /* read all data */
+ ide_atapi_cmd_read(s, lba, nb_sectors, 2352);
+ break;
+ default:
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ break;
+ }
+ }
+ break;
+ case GPCMD_SEEK:
+ {
+ unsigned int lba;
+ uint64_t total_sectors;
+
+ bdrv_get_geometry(s->bs, &total_sectors);
+ total_sectors >>= 2;
+ if (total_sectors == 0) {
+ ide_atapi_cmd_error(s, SENSE_NOT_READY,
+ ASC_MEDIUM_NOT_PRESENT);
+ break;
+ }
+ lba = ube32_to_cpu(packet + 2);
+ if (lba >= total_sectors) {
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_LOGICAL_BLOCK_OOR);
+ break;
+ }
+ ide_atapi_cmd_ok(s);
+ }
+ break;
+ case GPCMD_START_STOP_UNIT:
+ {
+ int start, eject, sense, err = 0;
+ start = packet[4] & 1;
+ eject = (packet[4] >> 1) & 1;
+
+ if (eject) {
+ err = bdrv_eject(s->bs, !start);
+ }
+
+ switch (err) {
+ case 0:
+ ide_atapi_cmd_ok(s);
+ break;
+ case -EBUSY:
+ sense = SENSE_NOT_READY;
+ if (bdrv_is_inserted(s->bs)) {
+ sense = SENSE_ILLEGAL_REQUEST;
+ }
+ ide_atapi_cmd_error(s, sense,
+ ASC_MEDIA_REMOVAL_PREVENTED);
+ break;
+ default:
+ ide_atapi_cmd_error(s, SENSE_NOT_READY,
+ ASC_MEDIUM_NOT_PRESENT);
+ break;
+ }
+ }
+ break;
+ case GPCMD_MECHANISM_STATUS:
+ {
+ max_len = ube16_to_cpu(packet + 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);
+ }
+ break;
+ case GPCMD_READ_TOC_PMA_ATIP:
+ {
+ int format, msf, start_track, len;
+ uint64_t total_sectors;
+
+ bdrv_get_geometry(s->bs, &total_sectors);
+ total_sectors >>= 2;
+ if (total_sectors == 0) {
+ ide_atapi_cmd_error(s, SENSE_NOT_READY,
+ ASC_MEDIUM_NOT_PRESENT);
+ break;
+ }
+ max_len = ube16_to_cpu(packet + 7);
+ format = packet[9] >> 6;
+ msf = (packet[1] >> 1) & 1;
+ start_track = packet[6];
+ switch(format) {
+ case 0:
+ len = cdrom_read_toc(total_sectors, buf, msf, start_track);
+ if (len < 0)
+ goto error_cmd;
+ ide_atapi_cmd_reply(s, len, max_len);
+ break;
+ case 1:
+ /* multi session : only a single session defined */
+ memset(buf, 0, 12);
+ buf[1] = 0x0a;
+ buf[2] = 0x01;
+ buf[3] = 0x01;
+ ide_atapi_cmd_reply(s, 12, max_len);
+ break;
+ case 2:
+ len = cdrom_read_toc_raw(total_sectors, buf, msf, start_track);
+ if (len < 0)
+ goto error_cmd;
+ ide_atapi_cmd_reply(s, len, max_len);
+ break;
+ default:
+ error_cmd:
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ break;
+ }
+ }
+ break;
+ case GPCMD_READ_CDVD_CAPACITY:
+ {
+ uint64_t total_sectors;
+
+ bdrv_get_geometry(s->bs, &total_sectors);
+ total_sectors >>= 2;
+ if (total_sectors == 0) {
+ ide_atapi_cmd_error(s, SENSE_NOT_READY,
+ ASC_MEDIUM_NOT_PRESENT);
+ break;
+ }
+ /* 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);
+ }
+ break;
+ case GPCMD_READ_DVD_STRUCTURE:
+ {
+ int media = packet[1];
+ int format = packet[7];
+ int ret;
+
+ max_len = ube16_to_cpu(packet + 8);
+
+ if (format < 0xff) {
+ if (media_is_cd(s)) {
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_INCOMPATIBLE_FORMAT);
+ break;
+ } else if (!media_present(s)) {
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ break;
+ }
+ }
+
+ 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, packet, buf);
+
+ if (ret < 0)
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST, -ret);
+ else
+ ide_atapi_cmd_reply(s, ret, max_len);
+
+ break;
+ }
+ /* TODO: BD support, fall through for now */
+
+ /* Generic disk structures */
+ case 0x80: /* TODO: AACS volume identifier */
+ case 0x81: /* TODO: AACS media serial number */
+ case 0x82: /* TODO: AACS media identifier */
+ case 0x83: /* TODO: AACS media key block */
+ case 0x90: /* TODO: List of recognized format layers */
+ case 0xc0: /* TODO: Write protection status */
+ default:
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ break;
+ }
+ }
+ break;
+ case GPCMD_SET_SPEED:
+ ide_atapi_cmd_ok(s);
+ break;
+ case GPCMD_INQUIRY:
+ max_len = packet[4];
+ buf[0] = 0x05; /* CD-ROM */
+ buf[1] = 0x80; /* removable */
+ buf[2] = 0x00; /* ISO */
+ buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
+ buf[4] = 31; /* additional length */
+ buf[5] = 0; /* reserved */
+ buf[6] = 0; /* reserved */
+ buf[7] = 0; /* reserved */
+ padstr8(buf + 8, 8, "QEMU");
+ padstr8(buf + 16, 16, "QEMU DVD-ROM");
+ padstr8(buf + 32, 4, s->version);
+ ide_atapi_cmd_reply(s, 36, max_len);
+ break;
+ case GPCMD_GET_CONFIGURATION:
+ {
+ uint32_t len;
+ uint8_t index = 0;
+
+ /* only feature 0 is supported */
+ if (packet[2] != 0 || packet[3] != 0) {
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ break;
+ }
+
+ /* XXX: could result in alignment problems in some architectures */
+ max_len = ube16_to_cpu(packet + 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);
+ break;
+ }
+ case GPCMD_GET_EVENT_STATUS_NOTIFICATION:
+ handle_get_event_status_notification(s, buf, packet);
+ break;
+ default:
+ ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
+ ASC_ILLEGAL_OPCODE);
+ break;
+ }
+}