#asahi-dev on 2023-12-26 — irc logs at oftc.irclog.whitequark.org

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11:25 <janneg> kettenis: what do you mean? iova's out of the annotated dma-range? dma-range came later and nobody updated m1n1

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12:30 <kettenis> janneg: that is exactly what I mean

12:32 <kettenis> I also noticed something else that's weird with the apple,dma-range properties for some of the SoCs

12:33 <kettenis> the dcp driver enters some of the buffers into both the disp0 and dcp DARTs with the same iova

12:33 <kettenis> but on t8103 for example, the apple,dma-range windows of those two DARTs do not overlap

12:41 <janneg> that is already present in the adt. on t8103 it's based on asc-dram-mask in the ADT which only applies to dcp

12:43 <janneg> t8112 make the inconsistency even more obvious, see vm-base for dart-disp0 (0) and dart-dcp (0x800000000)

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14:50 <kettenis> but there vm-size for dart-disp0 is 0xfffff0000 such that it includes the dcp range

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18:21 <kettenis> jaaneg: dcpep_cb_map_reg *WARNING* attempted to read invalid reg index 4

18:21 <kettenis> are we missing a register region on t600x?

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18:47 <janneg> kettenis: I can't remember having seen that ever. which device and OS firmware?

18:55 <janneg> kettenis: or most probably incompatible driver and dtb

18:57 <janneg> the disp-4 register got moved to "apple,bw-scratch" because it is apple's wisdom always pmgr on die0

18:58 <janneg> i.e. we can't have it as reg since it must not be mapped to the second's dies MMIO range via ranges

19:00 <janneg> kettenis: see https://github.com/AsahiLinux/linux/commit/00f0043a5d78919cf14aee3999592b66792115d4

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19:19 <kettenis> janneg: ah, thanks, I'm still working on crossing the apple,dma-addr bump

19:20 <kettenis> so older code with the latest dtb

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23:00 <vadorovsky> hi! quick question - I would like to submit a little patch to u-boot, related to the apple pcie driver

23:00 <vadorovsky> https://github.com/vadorovsky/u-boot/commit/3d8fc8615b22d42551f65be17351d03a11bff4e9

23:00 <vadorovsky> where should I send it? to asahi fork on github as a PR or to the upstream gitlab repo?

23:01 <vadorovsky> (the patch is just a simple fix to get it building with clang, I'm trying out building asahi-gentoo with llvm+musl :v)

23:07 <janneg> vadorovsky: hej, if the patch applies to upstream u-boot please send it to the u-boot ml, if not please create a github pr

23:09 <vadorovsky> janneg: thanks! it applies to upstream, will send it to the ml then

23:14 <janneg> thanks

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