[Qemu-devel] [PATCH 27/55] atapi/scsi-disk: make mode page values coherent between the two

[Kevin Wolf <kwolf@redhat.com>]

From: Paolo Bonzini <pbonzini@redhat.com>

This patch adds to scsi-disk the missing mode page 0x01 for both disk
and CD-ROM drives, and mode page 0x0e for CD drives only.

A few offsets were wrong in atapi.c.  Also change the 2Ah mode page to
expose DVD media read capabilities in the IDE cdrom.  This lets you run
dvd+rw-mediainfo on the virtual DVD drives.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 hw/ide/atapi.c |   14 +++++++-------
 hw/scsi-disk.c |   33 ++++++++++++++++++++++++---------
 2 files changed, 31 insertions(+), 16 deletions(-)

diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
index e898da2..90b6729 100644
--- a/hw/ide/atapi.c
+++ b/hw/ide/atapi.c
@@ -751,7 +751,7 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf)
 
             buf[8] = MODE_PAGE_CAPABILITIES;
             buf[9] = 28 - 10;
-            buf[10] = 0x00;
+            buf[10] = 0x3b; /* read CDR/CDRW/DVDROM/DVDR/DVDRAM */
             buf[11] = 0x00;
 
             /* Claim PLAY_AUDIO capability (0x01) since some Linux
@@ -760,14 +760,14 @@ static void cmd_mode_sense(IDEState *s, uint8_t *buf)
             buf[13] = 3 << 5;
             buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
             if (s->tray_locked) {
-                buf[6] |= 1 << 1;
+                buf[14] |= 1 << 1;
             }
-            buf[15] = 0x00;
-            cpu_to_ube16(&buf[16], 706);
-            buf[18] = 0;
+            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);
-            cpu_to_ube16(&buf[22], 706);
+            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;
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 8f3ada6..116e562 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -611,6 +611,8 @@ static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf,
         [MODE_PAGE_HD_GEOMETRY]            = (1 << TYPE_DISK),
         [MODE_PAGE_FLEXIBLE_DISK_GEOMETRY] = (1 << TYPE_DISK),
         [MODE_PAGE_CACHING]                = (1 << TYPE_DISK) | (1 << TYPE_ROM),
+        [MODE_PAGE_R_W_ERROR]              = (1 << TYPE_DISK) | (1 << TYPE_ROM),
+        [MODE_PAGE_AUDIO_CTL]              = (1 << TYPE_ROM),
         [MODE_PAGE_CAPABILITIES]           = (1 << TYPE_ROM),
     };
 
@@ -711,13 +713,26 @@ static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf,
         }
         break;
 
+    case MODE_PAGE_R_W_ERROR:
+        p[1] = 10;
+        p[2] = 0x80; /* Automatic Write Reallocation Enabled */
+        if (s->qdev.type == TYPE_ROM) {
+            p[3] = 0x20; /* Read Retry Count */
+        }
+        break;
+
+    case MODE_PAGE_AUDIO_CTL:
+        p[1] = 14;
+        break;
+
     case MODE_PAGE_CAPABILITIES:
         p[1] = 0x14;
         if (page_control == 1) { /* Changeable Values */
             break;
         }
-        p[2] = 3; // CD-R & CD-RW read
-        p[3] = 0; // Writing not supported
+
+        p[2] = 0x3b; /* CD-R & CD-RW read */
+        p[3] = 0; /* Writing not supported */
         p[4] = 0x7f; /* Audio, composite, digital out,
                         mode 2 form 1&2, multi session */
         p[5] = 0xff; /* CD DA, DA accurate, RW supported,
@@ -727,17 +742,17 @@ static int mode_sense_page(SCSIDiskState *s, int page, uint8_t **p_outbuf,
         /* Locking supported, jumper present, eject, tray */
         p[7] = 0; /* no volume & mute control, no
                      changer */
-        p[8] = (50 * 176) >> 8; // 50x read speed
+        p[8] = (50 * 176) >> 8; /* 50x read speed */
         p[9] = (50 * 176) & 0xff;
-        p[10] = 0 >> 8; // No volume
-        p[11] = 0 & 0xff;
-        p[12] = 2048 >> 8; // 2M buffer
+        p[10] = 2 >> 8; /* Two volume levels */
+        p[11] = 2 & 0xff;
+        p[12] = 2048 >> 8; /* 2M buffer */
         p[13] = 2048 & 0xff;
-        p[14] = (16 * 176) >> 8; // 16x read speed current
+        p[14] = (16 * 176) >> 8; /* 16x read speed current */
         p[15] = (16 * 176) & 0xff;
-        p[18] = (16 * 176) >> 8; // 16x write speed
+        p[18] = (16 * 176) >> 8; /* 16x write speed */
         p[19] = (16 * 176) & 0xff;
-        p[20] = (16 * 176) >> 8; // 16x write speed current
+        p[20] = (16 * 176) >> 8; /* 16x write speed current */
         p[21] = (16 * 176) & 0xff;
         break;
 
-- 
1.7.6.4