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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>
This commit is contained in:
Sun Peng 2020-07-10 14:32:20 +08:00 committed by wenlingz
parent 76ec5f69f8
commit e677f9413b
1 changed files with 28 additions and 10 deletions
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38
devicemodel/hw/pci/passthrough.c
View File

@ -59,17 +59,35 @@
#define PCI_BDF_GPU 0x00000010 /* 00:02.0 */
#define GPU_DSM_SIZE 0x4000000
/* set dsm gpa=0xDB000000, which is reserved in e820 table */
#define GPU_DSM_GPA 0xDB000000
#define GPU_OPREGION_SIZE 0x3000
/* set opregion gpa=0xDFFFD000, which is reserved in e820 table.
* [0xDFFFD000, 0XE0000000] 12K opregion has reserved for GVT-g,
* because GVT-d is not compatible with GVT-g,
* so here can use [0xDFFFD000, 0XE0000000] region.
/* Reserved [0x DF000000, 0x E0000000] 16M in e820 table for GVT
* [0xDB000000, 0xDF000000) 64M, DSM, used by native GOP and gfx driver
* for GVT-g use:
* [0xDF000000, 0xDF800000) 8M, GOP FB, used OvmfPkg/GvtGopDxe for 1080p@30
* [0xDFFFD000, 0xDFFFF000) 8K, OpRegion, used by GvtGopDxe and GVT-g
* [0xDFFFF000, 0XE0000000) 4K, Reserved, not used
* for GVT-d use:
* [0xDFFFC000, 0xDFFFE000) 8K, OpRegion, used by native GOP and gfx driver
* [0xDFFFE000, 0XE0000000] 8K, Extended OpRegion, store raw 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
* If VBT <= 6KB, stores in Mailbox #4
* If VBT > 6KB, stores in Extended OpRegion
* 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, not support currently
*/
#define GPU_OPREGION_GPA 0xDFFFD000
#define GPU_DSM_GPA 0xDB000000
#define GPU_DSM_SIZE 0x4000000
#define GPU_OPREGION_GPA 0xDFFFC000
#define GPU_OPREGION_SIZE 0x4000
extern uint64_t audio_nhlt_len;