[Qemu-devel] [PATCH 21/32] ide: qdev properties for disk geometry

[Markus Armbruster <armbru@redhat.com>]

Geometry needs to be qdev properties, because it belongs to the
disk's guest part.

Maintain backward compatibility exactly like for serial: fall back to
DriveInfo's geometry, set with -drive cyls=...

Do this only for ide-hd.  ide-drive is legacy.  ide-cd doesn't have a
geometry.

Bonus: info qtree now shows the geometry.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 hw/ide/core.c     |   19 ++++++++++++++-----
 hw/ide/internal.h |    4 +++-
 hw/ide/qdev.c     |   22 +++++++++++++++++++++-
 3 files changed, 38 insertions(+), 7 deletions(-)

diff --git a/hw/ide/core.c b/hw/ide/core.c
index f1966e3..bf1ce89 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1925,16 +1925,16 @@ static const BlockDevOps ide_cd_block_ops = {
 
 int ide_init_drive(IDEState *s, BlockDriverState *bs, IDEDriveKind kind,
                    const char *version, const char *serial, const char *model,
-                   uint64_t wwn)
+                   uint64_t wwn,
+                   uint32_t cylinders, uint32_t heads, uint32_t secs,
+                   int chs_trans)
 {
-    uint32_t cylinders, heads, secs;
     uint64_t nb_sectors;
 
     s->bs = bs;
     s->drive_kind = kind;
 
     bdrv_get_geometry(bs, &nb_sectors);
-    hd_geometry_guess(bs, &cylinders, &heads, &secs, &s->chs_trans);
     if (cylinders < 1 || cylinders > 16383) {
         error_report("cyls must be between 1 and 16383");
         return -1;
@@ -1950,6 +1950,7 @@ int ide_init_drive(IDEState *s, BlockDriverState *bs, IDEDriveKind kind,
     s->cylinders = cylinders;
     s->heads = heads;
     s->sectors = secs;
+    s->chs_trans = chs_trans;
     s->nb_sectors = nb_sectors;
     s->wwn = wwn;
     /* The SMART values should be preserved across power cycles
@@ -2076,17 +2077,25 @@ void ide_init2(IDEBus *bus, qemu_irq irq)
 void ide_init2_with_non_qdev_drives(IDEBus *bus, DriveInfo *hd0,
                                     DriveInfo *hd1, qemu_irq irq)
 {
-    int i;
+    int i, trans;
     DriveInfo *dinfo;
+    uint32_t cyls, heads, secs;
 
     for(i = 0; i < 2; i++) {
         dinfo = i == 0 ? hd0 : hd1;
         ide_init1(bus, i);
         if (dinfo) {
+            cyls  = dinfo->cyls;
+            heads = dinfo->heads;
+            secs  = dinfo->secs;
+            trans = dinfo->trans;
+            if (!cyls && !heads && !secs) {
+                hd_geometry_guess(dinfo->bdrv, &cyls, &heads, &secs, &trans);
+            }
             if (ide_init_drive(&bus->ifs[i], dinfo->bdrv,
                                dinfo->media_cd ? IDE_CD : IDE_HD, NULL,
                                *dinfo->serial ? dinfo->serial : NULL,
-                               NULL, 0) < 0) {
+                               NULL, 0, cyls, heads, secs, trans) < 0) {
                 error_report("Can't set up IDE drive %s", dinfo->id);
                 exit(1);
             }
diff --git a/hw/ide/internal.h b/hw/ide/internal.h
index 56c718e..685e976 100644
--- a/hw/ide/internal.h
+++ b/hw/ide/internal.h
@@ -545,7 +545,9 @@ uint32_t ide_data_readl(void *opaque, uint32_t addr);
 
 int ide_init_drive(IDEState *s, BlockDriverState *bs, IDEDriveKind kind,
                    const char *version, const char *serial, const char *model,
-                   uint64_t wwn);
+                   uint64_t wwn,
+                   uint32_t cylinders, uint32_t heads, uint32_t secs,
+                   int chs_trans);
 void ide_init2(IDEBus *bus, qemu_irq irq);
 void ide_init2_with_non_qdev_drives(IDEBus *bus, DriveInfo *hd0,
                                     DriveInfo *hd1, qemu_irq irq);
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index 87e0b75..3e297dc 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -21,6 +21,7 @@
 #include "qemu-error.h"
 #include <hw/ide/internal.h>
 #include "blockdev.h"
+#include "hw/block-common.h"
 #include "sysemu.h"
 
 /* --------------------------------- */
@@ -143,6 +144,7 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
     IDEState *s = bus->ifs + dev->unit;
     const char *serial;
     DriveInfo *dinfo;
+    int trans;
 
     if (dev->conf.discard_granularity && dev->conf.discard_granularity != 512) {
         error_report("discard_granularity must be 512 for ide");
@@ -158,8 +160,25 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
         }
     }
 
+    trans = BIOS_ATA_TRANSLATION_AUTO;
+    if (!dev->conf.cyls && !dev->conf.heads && !dev->conf.secs) {
+        /* try to fall back to value set with legacy -drive cyls=... */
+        dinfo = drive_get_by_blockdev(dev->conf.bs);
+        dev->conf.cyls  = dinfo->cyls;
+        dev->conf.heads = dinfo->heads;
+        dev->conf.secs  = dinfo->secs;
+        trans           = dinfo->trans;
+    }
+    if (!dev->conf.cyls && !dev->conf.heads && !dev->conf.secs) {
+        hd_geometry_guess(dev->conf.bs,
+                          &dev->conf.cyls, &dev->conf.heads, &dev->conf.secs,
+                          &trans);
+    }
+
     if (ide_init_drive(s, dev->conf.bs, kind,
-                       dev->version, serial, dev->model, dev->wwn) < 0) {
+                       dev->version, serial, dev->model, dev->wwn,
+                       dev->conf.cyls, dev->conf.heads, dev->conf.secs,
+                       trans) < 0) {
         return -1;
     }
 
@@ -202,6 +221,7 @@ static int ide_drive_initfn(IDEDevice *dev)
 
 static Property ide_hd_properties[] = {
     DEFINE_IDE_DEV_PROPERTIES(),
+    DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
     DEFINE_PROP_END_OF_LIST(),
 };
 
-- 
1.7.6.5