Mesa (main): panfrost: Support rendering to AFBC on Valhall

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Module: Mesa
Branch: main
Commit: 9afa8cc555e8452081103f0d1258ece6c54d12ef
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9afa8cc555e8452081103f0d1258ece6c54d12ef

Author: Alyssa Rosenzweig <alyssa at collabora.com>
Date:   Tue May 17 14:27:09 2022 -0400

panfrost: Support rendering to AFBC on Valhall

Add the required handling when packing render target and depth buffer
descriptors on Valhall. This is mostly equivalent to Bifrost.

Signed-off-by: Alyssa Rosenzweig <alyssa at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16800>

---

 src/panfrost/lib/pan_cs.c | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/src/panfrost/lib/pan_cs.c b/src/panfrost/lib/pan_cs.c
index 35747a84633..41b46a9a441 100644
--- a/src/panfrost/lib/pan_cs.c
+++ b/src/panfrost/lib/pan_cs.c
@@ -204,12 +204,18 @@ pan_prepare_zs(const struct pan_fb_info *fb,
 
         struct pan_surface surf;
         pan_iview_get_surface(zs, 0, 0, 0, &surf);
+        UNUSED const struct pan_image_slice_layout *slice = &zs->image->layout.slices[level];
 
         if (drm_is_afbc(zs->image->layout.modifier)) {
-#if PAN_ARCH <= 8
-#if PAN_ARCH >= 6
-                const struct pan_image_slice_layout *slice = &zs->image->layout.slices[level];
+#if PAN_ARCH >= 9
+                ext->zs_writeback_base = surf.afbc.header;
+                ext->zs_writeback_row_stride = slice->row_stride;
+                /* TODO: surface stride? */
+                ext->zs_afbc_body_offset = surf.afbc.body - surf.afbc.header;
 
+                /* TODO: stencil AFBC? */
+#else
+#if PAN_ARCH >= 6
                 ext->zs_afbc_row_stride = pan_afbc_stride_blocks(zs->image->layout.modifier, slice->row_stride);
 #else
                 ext->zs_block_format = MALI_BLOCK_FORMAT_AFBC;
@@ -473,7 +479,18 @@ pan_prepare_rt(const struct pan_fb_info *fb, unsigned idx,
         pan_iview_get_surface(rt, 0, 0, 0, &surf);
 
         if (drm_is_afbc(rt->image->layout.modifier)) {
-#if PAN_ARCH <= 8
+#if PAN_ARCH >= 9
+                if (rt->image->layout.modifier & AFBC_FORMAT_MOD_YTR)
+                        cfg->afbc.yuv_transform = true;
+
+                cfg->afbc.wide_block = panfrost_afbc_is_wide(rt->image->layout.modifier);
+                cfg->afbc.header = surf.afbc.header;
+                cfg->afbc.body_offset = surf.afbc.body - surf.afbc.header;
+                assert(surf.afbc.body >= surf.afbc.header);
+
+                cfg->afbc.compression_mode = pan_afbc_compression_mode(rt->format);
+                cfg->afbc.row_stride = row_stride;
+#else
                 const struct pan_image_slice_layout *slice = &rt->image->layout.slices[level];
 
 #if PAN_ARCH >= 6