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author | Alyssa Rosenzweig <[email protected]> | 2019-02-10 20:06:21 +0000 |
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committer | Alyssa Rosenzweig <[email protected]> | 2019-02-15 07:22:42 +0000 |
commit | 97aa05470a7a95983e365ef57d7af9425f4642a8 (patch) | |
tree | f672f6d991594a185328d29e00747a2d4721f870 /src/meson.build | |
parent | f96e871c26dbc2c9d8c68ee87a46853737492320 (diff) |
panfrost: Backport driver to Mali T600/T700
There are a few differenes between Mali T860 (Panfrost's primary
reference target) and the older Midgard generations (T600/T700):
- Miscellaneous different magic numbers. It's not clear what these
numbers mean on either the old or new configurations yet.
- Errata fixes. T800 is the final Midgard generation and presumably the
least buggy. Older Midgard has some extra hardware errata we have to
workaround.
- SFBD vs MFBD split. Essentially, older Midgard use a Single
FrameBuffer Descriptor (SFBD), which corresponds to single
render-target rendering. Newer Midgard (T760+) use a Multiple
FrameBuffer Descriptor (MFBD), allowing multiple RTs. On ES 2.0, these
descriptors serve the same function, but we implement both, depending on
the version of the hardware.
- CPU bitness. 32-bit systems generally use 32-bit GPU descriptors, and
vice versa for 64-bit. Our target T760 systems are 32-bit whereas our
target T860 systems are 64-bit. More work is needed in this area.
This patch fixes support in these areas for supporting older Midgard
hardware. It is tested on Mali T760 and Mali T860.
Signed-off-by: Alyssa Rosenzweig <[email protected]>
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