This is version 2.2 of the original patch proposed to fix the MMC6
command for GET CONFIGURATION for multi profile CD/DVD support and that
was originally committed as b64c20519d5826875679b6df85afebed27e1a9a8
cvs -q diff -up -r1.79 -r1.80 hw/ide.c
Signed-off-by: Carlo Marcelo Arenas Belon <[EMAIL PROTECTED]>
---
qemu/hw/ide.c | 123 +++++++++++++++++++++++++++++++++++++++++++++++++++------
1 files changed, 110 insertions(+), 13 deletions(-)
diff --git a/qemu/hw/ide.c b/qemu/hw/ide.c
index 9a22db9..54496c2 100644
--- a/qemu/hw/ide.c
+++ b/qemu/hw/ide.c
@@ -1,5 +1,5 @@
/*
- * QEMU IDE disk and CD-ROM Emulator
+ * QEMU IDE disk and CD/DVD-ROM Emulator
*
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2006 Openedhand Ltd.
@@ -284,6 +284,58 @@
* of MODE_SENSE_POWER_PAGE */
#define GPMODE_CDROM_PAGE 0x0d
+/*
+ * Based on values from <linux/cdrom.h> but extending CD_MINS
+ * to the maximum common size allowed by the Orange's Book ATIP
+ *
+ * 90 and 99 min CDs are also available but using them as the
+ * upper limit reduces the effectiveness of the heuristic to
+ * detect DVDs burned to less than 25% of their maximum capacity
+ */
+
+/* Some generally useful CD-ROM information */
+#define CD_MINS 80 /* max. minutes per CD */
+#define CD_SECS 60 /* seconds per minute */
+#define CD_FRAMES 75 /* frames per second */
+#define CD_FRAMESIZE 2048 /* bytes per frame, "cooked" mode */
+#define CD_MAX_BYTES (CD_MINS * CD_SECS * CD_FRAMES * CD_FRAMESIZE)
+#define CD_MAX_SECTORS (CD_MAX_BYTES / 512)
+
+/*
+ * The MMC values are not IDE specific and might need to be moved
+ * to a common header if they are also needed for the SCSI emulation
+ */
+
+/* Profile list from MMC-6 revision 1 table 91 */
+#define MMC_PROFILE_NONE 0x0000
+#define MMC_PROFILE_CD_ROM 0x0008
+#define MMC_PROFILE_CD_R 0x0009
+#define MMC_PROFILE_CD_RW 0x000A
+#define MMC_PROFILE_DVD_ROM 0x0010
+#define MMC_PROFILE_DVD_R_SR 0x0011
+#define MMC_PROFILE_DVD_RAM 0x0012
+#define MMC_PROFILE_DVD_RW_RO 0x0013
+#define MMC_PROFILE_DVD_RW_SR 0x0014
+#define MMC_PROFILE_DVD_R_DL_SR 0x0015
+#define MMC_PROFILE_DVD_R_DL_JR 0x0016
+#define MMC_PROFILE_DVD_RW_DL 0x0017
+#define MMC_PROFILE_DVD_DDR 0x0018
+#define MMC_PROFILE_DVD_PLUS_RW 0x001A
+#define MMC_PROFILE_DVD_PLUS_R 0x001B
+#define MMC_PROFILE_DVD_PLUS_RW_DL 0x002A
+#define MMC_PROFILE_DVD_PLUS_R_DL 0x002B
+#define MMC_PROFILE_BD_ROM 0x0040
+#define MMC_PROFILE_BD_R_SRM 0x0041
+#define MMC_PROFILE_BD_R_RRM 0x0042
+#define MMC_PROFILE_BD_RE 0x0043
+#define MMC_PROFILE_HDDVD_ROM 0x0050
+#define MMC_PROFILE_HDDVD_R 0x0051
+#define MMC_PROFILE_HDDVD_RAM 0x0052
+#define MMC_PROFILE_HDDVD_RW 0x0053
+#define MMC_PROFILE_HDDVD_R_DL 0x0058
+#define MMC_PROFILE_HDDVD_RW_DL 0x005A
+#define MMC_PROFILE_INVALID 0xFFFF
+
#define ATAPI_INT_REASON_CD 0x01 /* 0 = data transfer */
#define ATAPI_INT_REASON_IO 0x02 /* 1 = transfer to the host */
#define ATAPI_INT_REASON_REL 0x04
@@ -1290,6 +1342,22 @@ static void ide_atapi_cmd_read(IDEState *s, int lba, int
nb_sectors,
}
}
+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 void ide_atapi_cmd(IDEState *s)
{
const uint8_t *packet;
@@ -1640,7 +1708,7 @@ static void ide_atapi_cmd(IDEState *s)
break;
case GPCMD_GET_CONFIGURATION:
{
- uint64_t total_sectors;
+ uint32_t len;
/* only feature 0 is supported */
if (packet[2] != 0 || packet[3] != 0) {
@@ -1648,17 +1716,46 @@ static void ide_atapi_cmd(IDEState *s)
ASC_INV_FIELD_IN_CMD_PACKET);
break;
}
- memset(buf, 0, 32);
- bdrv_get_geometry(s->bs, &total_sectors);
- buf[3] = 16;
- buf[7] = total_sectors <= 1433600 ? 0x08 : 0x10; /* current
profile */
- buf[10] = 0x10 | 0x1;
- buf[11] = 0x08; /* size of profile list */
- buf[13] = 0x10; /* DVD-ROM profile */
- buf[14] = buf[7] == 0x10; /* (in)active */
- buf[17] = 0x08; /* CD-ROM profile */
- buf[18] = buf[7] == 0x08; /* (in)active */
- ide_atapi_cmd_reply(s, 32, 32);
+
+ /* 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 exponentially.
+ */
+ 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
+ *
+ * XXX: fails to detect correctly DVDs with less data burned
+ * than what a CD can hold
+ */
+ if ((s -> nb_sectors)) {
+ if ((s -> nb_sectors > CD_MAX_SECTORS))
+ cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM);
+ else
+ cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM);
+ }
+
+ len = 8; /* header completed */
+ if (max_len > len) {
+ uint8_t index = 0;
+
+ buf[10] = 0x02 | 0x01; /* persistent and current */
+ len += 4; /* header */
+ 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;
}
default:
--
1.5.3.7
-------------------------------------------------------------------------
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