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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/hw/block/cdrom.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/hw/block/cdrom.c')
-rw-r--r--qemu/hw/block/cdrom.c155
1 files changed, 155 insertions, 0 deletions
diff --git a/qemu/hw/block/cdrom.c b/qemu/hw/block/cdrom.c
new file mode 100644
index 000000000..4e1019c89
--- /dev/null
+++ b/qemu/hw/block/cdrom.c
@@ -0,0 +1,155 @@
+/*
+ * QEMU ATAPI CD-ROM Emulator
+ *
+ * Copyright (c) 2006 Fabrice Bellard
+ *
+ * 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.
+ */
+
+/* ??? Most of the ATAPI emulation is still in ide.c. It should be moved
+ here. */
+
+#include "qemu-common.h"
+#include "hw/scsi/scsi.h"
+
+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;
+}
+
+/* same toc as bochs. Return -1 if error or the toc length */
+/* XXX: check this */
+int cdrom_read_toc(int nb_sectors, uint8_t *buf, int msf, int start_track)
+{
+ uint8_t *q;
+ int len;
+
+ if (start_track > 1 && start_track != 0xaa)
+ return -1;
+ q = buf + 2;
+ *q++ = 1; /* first session */
+ *q++ = 1; /* last session */
+ if (start_track <= 1) {
+ *q++ = 0; /* reserved */
+ *q++ = 0x14; /* ADR, control */
+ *q++ = 1; /* track number */
+ *q++ = 0; /* reserved */
+ if (msf) {
+ *q++ = 0; /* reserved */
+ lba_to_msf(q, 0);
+ q += 3;
+ } else {
+ /* sector 0 */
+ stl_be_p(q, 0);
+ q += 4;
+ }
+ }
+ /* lead out track */
+ *q++ = 0; /* reserved */
+ *q++ = 0x16; /* ADR, control */
+ *q++ = 0xaa; /* track number */
+ *q++ = 0; /* reserved */
+ if (msf) {
+ *q++ = 0; /* reserved */
+ lba_to_msf(q, nb_sectors);
+ q += 3;
+ } else {
+ stl_be_p(q, nb_sectors);
+ q += 4;
+ }
+ len = q - buf;
+ stw_be_p(buf, len - 2);
+ return len;
+}
+
+/* mostly same info as PearPc */
+int cdrom_read_toc_raw(int nb_sectors, uint8_t *buf, int msf, int session_num)
+{
+ uint8_t *q;
+ int len;
+
+ q = buf + 2;
+ *q++ = 1; /* first session */
+ *q++ = 1; /* last session */
+
+ *q++ = 1; /* session number */
+ *q++ = 0x14; /* data track */
+ *q++ = 0; /* track number */
+ *q++ = 0xa0; /* lead-in */
+ *q++ = 0; /* min */
+ *q++ = 0; /* sec */
+ *q++ = 0; /* frame */
+ *q++ = 0;
+ *q++ = 1; /* first track */
+ *q++ = 0x00; /* disk type */
+ *q++ = 0x00;
+
+ *q++ = 1; /* session number */
+ *q++ = 0x14; /* data track */
+ *q++ = 0; /* track number */
+ *q++ = 0xa1;
+ *q++ = 0; /* min */
+ *q++ = 0; /* sec */
+ *q++ = 0; /* frame */
+ *q++ = 0;
+ *q++ = 1; /* last track */
+ *q++ = 0x00;
+ *q++ = 0x00;
+
+ *q++ = 1; /* session number */
+ *q++ = 0x14; /* data track */
+ *q++ = 0; /* track number */
+ *q++ = 0xa2; /* lead-out */
+ *q++ = 0; /* min */
+ *q++ = 0; /* sec */
+ *q++ = 0; /* frame */
+ if (msf) {
+ *q++ = 0; /* reserved */
+ lba_to_msf(q, nb_sectors);
+ q += 3;
+ } else {
+ stl_be_p(q, nb_sectors);
+ q += 4;
+ }
+
+ *q++ = 1; /* session number */
+ *q++ = 0x14; /* ADR, control */
+ *q++ = 0; /* track number */
+ *q++ = 1; /* point */
+ *q++ = 0; /* min */
+ *q++ = 0; /* sec */
+ *q++ = 0; /* frame */
+ if (msf) {
+ *q++ = 0;
+ lba_to_msf(q, 0);
+ q += 3;
+ } else {
+ *q++ = 0;
+ *q++ = 0;
+ *q++ = 0;
+ *q++ = 0;
+ }
+
+ len = q - buf;
+ stw_be_p(buf, len - 2);
+ return len;
+}