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block: Support providing LCHS from user

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Add logical geometry variables to BlockConf.

A user can now supply "lcyls", "lheads" & "lsecs" for any HD device
that supports CHS ("cyls", "heads", "secs").

These devices include:
    * ide-hd
    * scsi-hd
    * virtio-blk-pci

In future commits we will use the provided LCHS and pass it to the BIOS
through fw_cfg to be supplied using INT13 routines.

Reviewed-by: Karl Heubaum <karl.heubaum@oracle.com>
Reviewed-by: Arbel Moshe <arbel.moshe@oracle.com>
Signed-off-by: Sam Eiderman <shmuel.eiderman@oracle.com>
Signed-off-by: Sam Eiderman <sameid@google.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Sam Eiderman 2019-10-16 19:41:39 +03:00 • committed by John Snow
parent 8e6a174937
commit 64c5bb83df
1 changed files with 5 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
include/hw/block/block.h
View file

@ -26,6 +26,7 @@ typedef struct BlockConf {
uint32_t discard_granularity;
/* geometry, not all devices use this */
uint32_t cyls, heads, secs;
uint32_t lcyls, lheads, lsecs;
OnOffAuto wce;
bool share_rw;
BlockdevOnError rerror;
@ -65,7 +66,10 @@ static inline unsigned int get_physical_block_exp(BlockConf *conf)
#define DEFINE_BLOCK_CHS_PROPERTIES(_state, _conf) \
DEFINE_PROP_UINT32("cyls", _state, _conf.cyls, 0), \
DEFINE_PROP_UINT32("heads", _state, _conf.heads, 0), \
DEFINE_PROP_UINT32("secs", _state, _conf.secs, 0)
DEFINE_PROP_UINT32("secs", _state, _conf.secs, 0), \
DEFINE_PROP_UINT32("lcyls", _state, _conf.lcyls, 0), \
DEFINE_PROP_UINT32("lheads", _state, _conf.lheads, 0), \
DEFINE_PROP_UINT32("lsecs", _state, _conf.lsecs, 0)
#define DEFINE_BLOCK_ERROR_PROPERTIES(_state, _conf) \
DEFINE_PROP_BLOCKDEV_ON_ERROR("rerror", _state, _conf.rerror, \