6 files changed, 38 insertions, 4 deletions

diff --git a/include/block/block.h b/include/block/block.h
index 649c269ecd..473c746342 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -60,6 +60,17 @@ typedef enum {
     BDRV_REQ_MAY_UNMAP    = 0x4,
 } BdrvRequestFlags;
 
+typedef struct BlockSizes {
+    uint32_t phys;
+    uint32_t log;
+} BlockSizes;
+
+typedef struct HDGeometry {
+    uint32_t heads;
+    uint32_t sectors;
+    uint32_t cylinders;
+} HDGeometry;
+
 #define BDRV_O_RDWR        0x0002
 #define BDRV_O_SNAPSHOT    0x0008 /* open the file read only and save writes in a snapshot */
 #define BDRV_O_TEMPORARY   0x0010 /* delete the file after use */
@@ -550,6 +561,8 @@ AioContext *bdrv_get_aio_context(BlockDriverState *bs);
  * This function must be called with iothread lock held.
  */
 void bdrv_set_aio_context(BlockDriverState *bs, AioContext *new_context);
+int bdrv_probe_blocksizes(BlockDriverState *bs, BlockSizes *bsz);
+int bdrv_probe_geometry(BlockDriverState *bs, HDGeometry *geo);
 
 void bdrv_io_plug(BlockDriverState *bs);
 void bdrv_io_unplug(BlockDriverState *bs);
diff --git a/include/block/block_int.h b/include/block/block_int.h
index b340e7e140..dccb092df7 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -56,6 +56,8 @@
 #define BLOCK_OPT_ADAPTER_TYPE      "adapter_type"
 #define BLOCK_OPT_REDUNDANCY        "redundancy"
 #define BLOCK_OPT_NOCOW             "nocow"
+#define BLOCK_OPT_OBJECT_SIZE       "object_size"
+#define BLOCK_OPT_REFCOUNT_BITS     "refcount_bits"
 
 #define BLOCK_PROBE_BUF_SIZE        512
 
@@ -273,6 +275,21 @@ struct BlockDriver {
     void (*bdrv_io_unplug)(BlockDriverState *bs);
     void (*bdrv_flush_io_queue)(BlockDriverState *bs);
 
+    /**
+     * Try to get @bs's logical and physical block size.
+     * On success, store them in @bsz and return zero.
+     * On failure, return negative errno.
+     */
+    int (*bdrv_probe_blocksizes)(BlockDriverState *bs, BlockSizes *bsz);
+    /**
+     * Try to get @bs's geometry (cyls, heads, sectors)
+     * On success, store them in @geo and return 0.
+     * On failure return -errno.
+     * Only drivers that want to override guest geometry implement this
+     * callback; see hd_geometry_guess().
+     */
+    int (*bdrv_probe_geometry)(BlockDriverState *bs, HDGeometry *geo);
+
     QLIST_ENTRY(BlockDriver) list;
 };
 
diff --git a/include/block/coroutine_int.h b/include/block/coroutine_int.h
index f133d65af8..9aa1aae5d5 100644
--- a/include/block/coroutine_int.h
+++ b/include/block/coroutine_int.h
@@ -31,6 +31,7 @@
 typedef enum {
     COROUTINE_YIELD = 1,
     COROUTINE_TERMINATE = 2,
+    COROUTINE_ENTER = 3,
 } CoroutineAction;
 
 struct Coroutine {
diff --git a/include/hw/block/block.h b/include/hw/block/block.h
index 0d0ce9a467..8d7c4b413f 100644
--- a/include/hw/block/block.h
+++ b/include/hw/block/block.h
@@ -44,9 +44,9 @@ static inline unsigned int get_physical_block_exp(BlockConf *conf)
 #define DEFINE_BLOCK_PROPERTIES(_state, _conf)                          \
     DEFINE_PROP_DRIVE("drive", _state, _conf.blk),                      \
     DEFINE_PROP_BLOCKSIZE("logical_block_size", _state,                 \
-                          _conf.logical_block_size, 512),               \
+                          _conf.logical_block_size),                    \
     DEFINE_PROP_BLOCKSIZE("physical_block_size", _state,                \
-                          _conf.physical_block_size, 512),              \
+                          _conf.physical_block_size),                   \
     DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0),  \
     DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0),    \
     DEFINE_PROP_UINT32("discard_granularity", _state, \
@@ -63,6 +63,7 @@ void blkconf_serial(BlockConf *conf, char **serial);
 void blkconf_geometry(BlockConf *conf, int *trans,
                       unsigned cyls_max, unsigned heads_max, unsigned secs_max,
                       Error **errp);
+void blkconf_blocksizes(BlockConf *conf);
 
 /* Hard disk geometry */
 
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index 57ee363b89..0772a567c0 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -149,8 +149,8 @@ extern PropertyInfo qdev_prop_arraylen;
                         LostTickPolicy)
 #define DEFINE_PROP_BIOS_CHS_TRANS(_n, _s, _f, _d) \
     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_bios_chs_trans, int)
-#define DEFINE_PROP_BLOCKSIZE(_n, _s, _f, _d) \
-    DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_blocksize, uint16_t)
+#define DEFINE_PROP_BLOCKSIZE(_n, _s, _f) \
+    DEFINE_PROP_DEFAULT(_n, _s, _f, 0, qdev_prop_blocksize, uint16_t)
 #define DEFINE_PROP_PCI_HOST_DEVADDR(_n, _s, _f) \
     DEFINE_PROP(_n, _s, _f, qdev_prop_pci_host_devaddr, PCIHostDeviceAddress)
 
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 3ff9aeeb09..77e9b9c370 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -164,5 +164,7 @@ int blk_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors);
 int blk_save_vmstate(BlockBackend *blk, const uint8_t *buf,
                      int64_t pos, int size);
 int blk_load_vmstate(BlockBackend *blk, uint8_t *buf, int64_t pos, int size);
+int blk_probe_blocksizes(BlockBackend *blk, BlockSizes *bsz);
+int blk_probe_geometry(BlockBackend *blk, HDGeometry *geo);
 
 #endif