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DM: gvt: Identical mapping for GPU DSM refine to support EHL/TGL

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Windows graphic driver obtains DSM address from in-BAR mmio register
which has passthroughed. Not like the other platforms obtained from
pci configure space register which has virtualized. GPU GuC must use
WOPCM in DSM, besides, Windows OS wants to manage DSM also. These two
reason force acrn has to keep identical mapping to avoid trap mmio
BAR to do the emulation.

Tracked-On: #5880
Signed-off-by: Peng Sun <peng.p.sun@intel.com>
This commit is contained in:
ppsun
2021-03-29 08:53:29 +00:00
committed by wenlingz
parent b80c388b52
commit 2a96c567b8
7 changed files with 148 additions and 111 deletions
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4
devicemodel/include/pcireg.h
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@@ -1066,8 +1066,8 @@
#define PCIM_OSC_CTL_PCIE_CAP_STRUCT 0x10 /* Various Capability Structures */
/* Graphics definitions */
#define INTEL_ELKHARTLAKE 0x4551
#define INTEL_TIGERLAKE 0x9a49
#define INTEL_ELKHARTLAKE 0x4571
#define INTEL_TIGERLAKE 0x9a49
#define PCIR_BDSM 0x5C /* BDSM graphics base data of stolen memory register */
#define PCIR_GEN11_BDSM_DW0 0xC0
#define PCIR_GEN11_BDSM_DW1 0xC4