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WIP: Implement DCP 14.7 ABI - #562
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974d5b6CompareSigned-off-by: James Calligeros <jcalligeros99@gmail.com>
This firmware version was only ever used for extremely early alpha installs based on ALARM (so basically just for developers testing things). Remove support for it to make way for a new target ABI for M3 machines. Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Asahi Linux will target the firmware ABI from macOS 14.8.3 for i/mBoot-loaded firmware on M3 series machines. This version identifies itself as v14.7, so add it as such to the DCP driver. Most things are working, except for EDID retrieval for external displays and audio over HDMI/DisplayPort. There is also an issue where DCP will try to read destroyed/invisible framebuffers for some reason or another, causing IOVA faults. We will need to figure out how to get the new firmware to clear surfaces and stop reading the nonexistent framebuffers at the very least before shipping. Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Because we have not yet figured out how to clear surfaces, freeing old framebuffer references crashes DCP with IOVA errors. Don't destroy them for now so that we can continue working. Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Some of this is 0xaa padding, some of it is zeroes, and there is a conspicuous empty byte at the end. Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
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Depends on #520
Implements the macOS 14.7 EPIC IPC interface for DCP and drops 12.x (partially, WIP). Required for M3 series (excluding Ultra).
Draft until below is addressed
TODO: