Support virtio-GPU backed by both iGPU and dGPU scanouts #100
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| if (ret == 0 && value & (1UL << (index + 16))) { | ||
| ALOGI("wf -- set allow p2p for crtc %u, bitmask = 0x%lx\n", index, value); | ||
| c->allow_p2p_ = true; | ||
| } |
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drmCrtc.cpp is common code, while added code is virtio-gpu specific, it is better we can move these code to virtio-gpu file
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Yeah, but the flag is per-CRTC and it would be handy to include it in class DrmCrtc.
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sysopenci
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yyao3
* Save first shadow buffer handle and fd for destroying. * Make i915_device local to avoid race condition. Tracked-On: OAM-129252 Signed-off-by: Weifeng Liu <[email protected]>
Add a flag to the HwcLayer which will be set when the layer is allowed to be shared as local memory objects without migrating to system memory, primarily used in the case that the layer is to be displayed on dGPU. If this flag is enabled, we will set the DMA BUF name to "p2p" via DMA_BUF_SET_NAME ioctl. The name acts as a hint in the KMD for local memory sharing. This feature cannot be achieved without the help from virtio-GPU KMD: now virtio-GPU will expose a bit mask (queried by ALLOW_P2P parameter) indicating whether local memory sharing is allowed for each scan-out. Tracked-On: OAM-129252 Signed-off-by: Weifeng Liu <[email protected]>
sysopenci
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