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]>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/gallium/drivers/panfrost/pan_assemble.c b/src/gallium/drivers/panfrost/pan_assemble.c
index 44136acc18a..4cbbecce0f7 100644
--- a/src/gallium/drivers/panfrost/pan_assemble.c
+++ b/src/gallium/drivers/panfrost/pan_assemble.c
@@ -96,8 +96,8 @@ panfrost_shader_compile(struct panfrost_context *ctx, struct mali_shader_meta *m
         if (type == JOB_TYPE_VERTEX)
                 meta->varying_count += 1;
 
-        /* gl_FragCoord does -not- eat an extra spot; it will be included in our count if we need it */
-
+	/* Note: gl_FragCoord does -not- eat an extra spot; it will be included
+	 * in our count if we need it */
 
         meta->midgard1.unknown2 = 8; /* XXX */