Sun Peng e677f9413b dm: Increase OpRegion size for bigger VBT ...

OpRegion: 8KB(0x2000)
[ OpRegion Header      ] Offset: 0x0
[ Mailbox #1: ACPI     ] Offset: 0x100
[ Mailbox #2: SWSCI    ] Offset: 0x200
[ Mailbox #3: ASLE     ] Offset: 0x300
[ Mailbox #4: VBT      ] Offset: 0x400
[ Mailbox #5: ASLE EXT ] Offset: 0x1C00
Extended OpRegion: 8KB(0x2000)
[ Raw VBT              ] Offset: 0x0

Generally VBT stores in MailBox4 in OpRegion which max size is 6KB.
If VBT larger than 6KB, it will be stored in extended OpRegion which
is neighborhood with legacy OpRegion. In this case, we need to
passthrough extended OpRegion also to support GVT-d feature. The
OpRegion size that we passthrough should be (OpRegion+Extended)=16KB
ASLE.rvda stores the location of VBT.
For OpRegion 2.1+: ASLE.rvda = offset to OpRegion base address
For OpRegion 2.0:  ASLE.rvda = physical address

To-do: Add support for OpRegion on some platforms(eg. APL)

Tracked-On: #5029
Signed-off-by: Sun Peng <peng.p.sun@intel.com>

2020-07-15 16:13:03 +08:00

..

pci

dm: Increase OpRegion size for bigger VBT

2020-07-15 16:13:03 +08:00

platform

hv: vioapic: expose ioapic to guest unconditionally

2020-07-10 19:33:46 +08:00

block_if.c

dm:replace perror with pr_err

2020-01-08 13:37:57 +08:00

uart_core.c

dm: refine assert usage

2019-06-24 11:57:05 +08:00

usb_core.c

DM USB: modify disconnecting logic to support Windows 10

2019-09-26 11:29:22 +08:00