diff options
| author | Alyssa Rosenzweig <[email protected]> | 2019-08-01 13:29:01 -0700 |
|---|---|---|
| committer | Alyssa Rosenzweig <[email protected]> | 2019-08-02 14:20:02 -0700 |
| commit | c908772ee47201a1f84503099d1e0767a9f9818f (patch) | |
| tree | a3465670ae5dcbba46db0890cb96fafc8cf44a85 /src/panfrost/midgard/midgard.h | |
| parent | 2d54fdb563829fc9a097d35169e058acd8e1e790 (diff) | |
pan/midgard: Split ld/st unknown to arg_1/arg_2 fields
The 16-bit field can be decomposed to two independent 8-bit fields, each
representing a single (additional) argument to the load/store op,
generally used for encoding registers. Addressable registers here are
substantially limited compared to the main register in a load/store op.
Signed-off-by: Alyssa Rosenzweig <[email protected]>
Diffstat (limited to 'src/panfrost/midgard/midgard.h')
| -rw-r--r-- | src/panfrost/midgard/midgard.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/panfrost/midgard/midgard.h b/src/panfrost/midgard/midgard.h index aa8b1793c99..45eaca21c42 100644 --- a/src/panfrost/midgard/midgard.h +++ b/src/panfrost/midgard/midgard.h @@ -505,7 +505,14 @@ __attribute__((__packed__)) unsigned reg : 5; unsigned mask : 4; unsigned swizzle : 8; - unsigned unknown : 16; + + /* Load/store ops can take two additional registers as arguments, but + * these are limited to load/store registers with only a few supported + * mask/swizzle combinations. The tradeoff is these are much more + * compact, requiring 8-bits each rather than 17-bits for a full + * reg/mask/swizzle */ + unsigned arg_1 : 8; + unsigned arg_2 : 8; unsigned varying_parameters : 10; |