Revert "hw/block/fdc: Implement tray status"

This reverts the changes that commit
2e1280e8ff95b3145bc6262accc9d447718e5318 applied to hw/block/fdc.c.

That commit changed tests/fdc-test.c, too, because after it, one less
TRAY_MOVED event would be emitted when executing 'change' on an empty
drive. However, now, no TRAY_MOVED events will be emitted at all, and
the tray_open status returned by query-block will always be false,
necessitating (different) changes to tests/fdc-test.c and iotest 118,
which is why this patch is not a pure revert of said commit.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1453314561-10486-4-git-send-email-mreitz@redhat.com

3 files changed, 40 insertions, 99 deletions

diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index 6711c6ac1a..d2df218b84 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -193,8 +193,6 @@ typedef struct FDrive {
     uint8_t ro;               /* Is read-only           */
     uint8_t media_changed;    /* Is media changed       */
     uint8_t media_rate;       /* Data rate of medium    */
-
-    bool media_inserted;      /* Is there a medium in the tray */
 } FDrive;
 
 static void fd_init(FDrive *drv)
@@ -264,7 +262,7 @@ static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect,
 #endif
         drv->head = head;
         if (drv->track != track) {
-            if (drv->media_inserted) {
+            if (drv->blk != NULL && blk_is_inserted(drv->blk)) {
                 drv->media_changed = 0;
             }
             ret = 1;
@@ -273,7 +271,7 @@ static int fd_seek(FDrive *drv, uint8_t head, uint8_t track, uint8_t sect,
         drv->sect = sect;
     }
 
-    if (!drv->media_inserted) {
+    if (drv->blk == NULL || !blk_is_inserted(drv->blk)) {
         ret = 2;
     }
 
@@ -299,7 +297,7 @@ static void fd_revalidate(FDrive *drv)
         ro = blk_is_read_only(drv->blk);
         pick_geometry(drv->blk, &nb_heads, &max_track,
                       &last_sect, drv->drive, &drive, &rate);
-        if (!drv->media_inserted) {
+        if (!blk_is_inserted(drv->blk)) {
             FLOPPY_DPRINTF("No disk in drive\n");
         } else {
             FLOPPY_DPRINTF("Floppy disk (%d h %d t %d s) %s\n", nb_heads,
@@ -695,7 +693,7 @@ static bool fdrive_media_changed_needed(void *opaque)
 {
     FDrive *drive = opaque;
 
-    return (drive->media_inserted && drive->media_changed != 1);
+    return (drive->blk != NULL && drive->media_changed != 1);
 }
 
 static const VMStateDescription vmstate_fdrive_media_changed = {
@@ -2187,21 +2185,12 @@ static void fdctrl_change_cb(void *opaque, bool load)
 {
     FDrive *drive = opaque;
 
-    drive->media_inserted = load && drive->blk && blk_is_inserted(drive->blk);
-
     drive->media_changed = 1;
     fd_revalidate(drive);
 }
 
-static bool fdctrl_is_tray_open(void *opaque)
-{
-    FDrive *drive = opaque;
-    return !drive->media_inserted;
-}
-
 static const BlockDevOps fdctrl_block_ops = {
     .change_media_cb = fdctrl_change_cb,
-    .is_tray_open = fdctrl_is_tray_open,
 };
 
 /* Init functions */
@@ -2229,7 +2218,6 @@ static void fdctrl_connect_drives(FDCtrl *fdctrl, Error **errp)
         fdctrl_change_cb(drive, 0);
         if (drive->blk) {
             blk_set_dev_ops(drive->blk, &fdctrl_block_ops, drive);
-            drive->media_inserted = blk_is_inserted(drive->blk);
         }
     }
 }
diff --git a/tests/fdc-test.c b/tests/fdc-test.c
index b5a4696d86..7f0e215c04 100644
--- a/tests/fdc-test.c
+++ b/tests/fdc-test.c
@@ -304,7 +304,6 @@ static void test_media_insert(void)
     qmp_discard_response("{'execute':'change', 'arguments':{"
                          " 'device':'floppy0', 'target': %s, 'arg': 'raw' }}",
                          test_image);
-    qmp_discard_response(""); /* ignore event (open -> close) */
 
     dir = inb(FLOPPY_BASE + reg_dir);
     assert_bit_set(dir, DSKCHG);
@@ -335,7 +334,6 @@ static void test_media_change(void)
      * reset the bit. */
     qmp_discard_response("{'execute':'eject', 'arguments':{"
                          " 'device':'floppy0' }}");
-    qmp_discard_response(""); /* ignore event */
 
     dir = inb(FLOPPY_BASE + reg_dir);
     assert_bit_set(dir, DSKCHG);
diff --git a/tests/qemu-iotests/118 b/tests/qemu-iotests/118
index 114d0e2dea..7caa38cbe9 100755
--- a/tests/qemu-iotests/118
+++ b/tests/qemu-iotests/118
@@ -42,6 +42,9 @@ class ChangeBaseClass(iotests.QMPTestCase):
                     self.has_opened = True
 
     def wait_for_open(self):
+        if not self.has_real_tray:
+            return
+
         timeout = time.clock() + 3
         while not self.has_opened and time.clock() < timeout:
             self.process_events()
@@ -49,6 +52,9 @@ class ChangeBaseClass(iotests.QMPTestCase):
             self.fail('Timeout while waiting for the tray to open')
 
     def wait_for_close(self):
+        if not self.has_real_tray:
+            return
+
         timeout = time.clock() + 3
         while not self.has_closed and time.clock() < timeout:
             self.process_events()
@@ -65,7 +71,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_close()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
     def test_blockdev_change_medium(self):
@@ -78,7 +85,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_close()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
     def test_eject(self):
@@ -88,7 +96,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_open()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
     def test_tray_eject_change(self):
@@ -98,7 +107,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_open()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
         result = self.vm.qmp('blockdev-change-medium', device='drive0',
@@ -109,7 +119,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_close()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
     def test_tray_open_close(self):
@@ -119,7 +130,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_open()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', True)
         if self.was_empty == True:
             self.assert_qmp_absent(result, 'return[0]/inserted')
         else:
@@ -132,10 +144,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
             self.wait_for_close()
 
         result = self.vm.qmp('query-block')
-        if self.has_real_tray or not self.was_empty:
+        if self.has_real_tray:
             self.assert_qmp(result, 'return[0]/tray_open', False)
-        else:
-            self.assert_qmp(result, 'return[0]/tray_open', True)
         if self.was_empty == True:
             self.assert_qmp_absent(result, 'return[0]/inserted')
         else:
@@ -148,20 +158,18 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_open()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
         result = self.vm.qmp('blockdev-close-tray', device='drive0')
         self.assert_qmp(result, 'return', {})
 
-        if self.has_real_tray:
-            self.wait_for_close()
+        self.wait_for_close()
 
         result = self.vm.qmp('query-block')
         if self.has_real_tray:
             self.assert_qmp(result, 'return[0]/tray_open', False)
-        else:
-            self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
     def test_tray_open_change(self):
@@ -171,7 +179,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_open()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', True)
         if self.was_empty == True:
             self.assert_qmp_absent(result, 'return[0]/inserted')
         else:
@@ -185,7 +194,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_close()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
     def test_cycle(self):
@@ -202,7 +212,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_open()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', True)
         if self.was_empty == True:
             self.assert_qmp_absent(result, 'return[0]/inserted')
         else:
@@ -212,7 +223,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
         result = self.vm.qmp('x-blockdev-insert-medium', device='drive0',
@@ -220,7 +232,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
         result = self.vm.qmp('blockdev-close-tray', device='drive0')
@@ -229,7 +242,8 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.wait_for_close()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
+        if self.has_real_tray:
+            self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
     def test_close_on_closed(self):
@@ -239,16 +253,14 @@ class GeneralChangeTestsBaseClass(ChangeBaseClass):
         self.assertEquals(self.vm.get_qmp_events(wait=False), [])
 
     def test_remove_on_closed(self):
-        if self.has_opened:
-            # Empty floppy drive
+        if not self.has_real_tray:
             return
 
         result = self.vm.qmp('x-blockdev-remove-medium', device='drive0')
         self.assert_qmp(result, 'error/class', 'GenericError')
 
     def test_insert_on_closed(self):
-        if self.has_opened:
-            # Empty floppy drive
+        if not self.has_real_tray:
             return
 
         result = self.vm.qmp('blockdev-add',
@@ -366,7 +378,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -376,11 +387,7 @@ class TestChangeReadOnly(ChangeBaseClass):
                                                        read_only_mode='retain')
         self.assert_qmp(result, 'return', {})
 
-        self.wait_for_open()
-        self.wait_for_close()
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
@@ -390,7 +397,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -400,11 +406,7 @@ class TestChangeReadOnly(ChangeBaseClass):
                                                        read_only_mode='retain')
         self.assert_qmp(result, 'return', {})
 
-        self.wait_for_open()
-        self.wait_for_close()
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
@@ -414,7 +416,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -427,7 +428,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.assertEquals(self.vm.get_qmp_events(wait=False), [])
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -437,7 +437,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -448,11 +447,7 @@ class TestChangeReadOnly(ChangeBaseClass):
                              read_only_mode='read-write')
         self.assert_qmp(result, 'return', {})
 
-        self.wait_for_open()
-        self.wait_for_close()
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
@@ -462,7 +457,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -473,11 +467,7 @@ class TestChangeReadOnly(ChangeBaseClass):
                              read_only_mode='read-only')
         self.assert_qmp(result, 'return', {})
 
-        self.wait_for_open()
-        self.wait_for_close()
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
@@ -486,7 +476,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -497,11 +486,7 @@ class TestChangeReadOnly(ChangeBaseClass):
                              read_only_mode='read-only')
         self.assert_qmp(result, 'return', {})
 
-        self.wait_for_open()
-        self.wait_for_close()
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
@@ -511,7 +496,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -522,10 +506,7 @@ class TestChangeReadOnly(ChangeBaseClass):
                              read_only_mode='read-write')
         self.assert_qmp(result, 'error/class', 'GenericError')
 
-        self.assertEquals(self.vm.get_qmp_events(wait=False), [])
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -535,7 +516,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -545,11 +525,7 @@ class TestChangeReadOnly(ChangeBaseClass):
                                                        read_only_mode='retain')
         self.assert_qmp(result, 'return', {})
 
-        self.wait_for_open()
-        self.wait_for_close()
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
@@ -559,7 +535,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -569,10 +544,7 @@ class TestChangeReadOnly(ChangeBaseClass):
                                                        read_only_mode='retain')
         self.assert_qmp(result, 'error/class', 'GenericError')
 
-        self.assertEquals(self.vm.get_qmp_events(wait=False), [])
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -582,7 +554,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.vm.launch()
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -594,13 +565,7 @@ class TestChangeReadOnly(ChangeBaseClass):
                                                'driver': 'file'}})
         self.assert_qmp(result, 'return', {})
 
-        result = self.vm.qmp('blockdev-open-tray', device='drive0', force=True)
-        self.assert_qmp(result, 'return', {})
-
-        self.wait_for_open()
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp(result, 'return[0]/inserted/ro', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
@@ -608,7 +573,6 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp_absent(result, 'return[0]/inserted')
 
         result = self.vm.qmp('x-blockdev-insert-medium', device='drive0',
@@ -616,17 +580,10 @@ class TestChangeReadOnly(ChangeBaseClass):
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', True)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
-        result = self.vm.qmp('blockdev-close-tray', device='drive0')
-        self.assert_qmp(result, 'return', {})
-
-        self.wait_for_close()
-
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/ro', True)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', new_img)
 
@@ -648,7 +605,6 @@ class TestBlockJobsAfterCycle(ChangeBaseClass):
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/image/format', 'null-co')
 
         # For device-less BBs, calling blockdev-open-tray or blockdev-close-tray
@@ -671,7 +627,6 @@ class TestBlockJobsAfterCycle(ChangeBaseClass):
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('query-block')
-        self.assert_qmp(result, 'return[0]/tray_open', False)
         self.assert_qmp(result, 'return[0]/inserted/image/filename', old_img)
 
     def tearDown(self):