Mesa (master): pan/bi: Add 32-bit _FAST packing
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Mon Apr 6 19:59:01 UTC 2020
Module: Mesa
Branch: master
Commit: d7bb7b79a8b0a86ee3fbd21fffa8e3d0c8dd03a2
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=d7bb7b79a8b0a86ee3fbd21fffa8e3d0c8dd03a2
Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date: Mon Apr 6 10:15:34 2020 -0400
pan/bi: Add 32-bit _FAST packing
For frcp/frsq on newer Bifrost.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4470>
---
src/panfrost/bifrost/bi_pack.c | 26 ++++++++++++++++++++++++++
src/panfrost/bifrost/bifrost.h | 2 ++
2 files changed, 28 insertions(+)
diff --git a/src/panfrost/bifrost/bi_pack.c b/src/panfrost/bifrost/bi_pack.c
index ea68aa41b37..c6439c39e0c 100644
--- a/src/panfrost/bifrost/bi_pack.c
+++ b/src/panfrost/bifrost/bi_pack.c
@@ -634,6 +634,17 @@ bi_pack_fma_1src(bi_instruction *ins, struct bi_registers *regs, unsigned op)
RETURN_PACKED(pack);
}
+static unsigned
+bi_pack_add_1src(bi_instruction *ins, struct bi_registers *regs, unsigned op)
+{
+ struct bifrost_add_inst pack = {
+ .src0 = bi_get_src(ins, regs, 0, true),
+ .op = op
+ };
+
+ RETURN_PACKED(pack);
+}
+
static enum bifrost_csel_cond
bi_cond_to_csel(enum bi_cond cond, bool *flip, bool *invert, nir_alu_type T)
{
@@ -974,6 +985,20 @@ bi_pack_add_blend(bi_instruction *ins, struct bi_registers *regs)
RETURN_PACKED(pack);
}
+static unsigned
+bi_pack_add_special(bi_instruction *ins, struct bi_registers *regs)
+{
+ unsigned op = 0;
+
+ if (ins->op.special == BI_SPECIAL_FRCP) {
+ op = BIFROST_ADD_OP_FRCP_FAST_F32;
+ } else {
+ op = BIFROST_ADD_OP_FRSQ_FAST_F32;
+ }
+
+ return bi_pack_add_1src(ins, regs, op);
+}
+
static unsigned
bi_pack_add(bi_clause *clause, bi_bundle bundle, struct bi_registers *regs)
{
@@ -1013,6 +1038,7 @@ bi_pack_add(bi_clause *clause, bi_bundle bundle, struct bi_registers *regs)
case BI_STORE_VAR:
return bi_pack_add_st_vary(clause, bundle.add, regs);
case BI_SPECIAL:
+ return bi_pack_add_special(bundle.add, regs);
case BI_SWIZZLE:
case BI_TEX:
case BI_ROUND:
diff --git a/src/panfrost/bifrost/bifrost.h b/src/panfrost/bifrost/bifrost.h
index 4dc3c741b38..31ea14db63c 100644
--- a/src/panfrost/bifrost/bifrost.h
+++ b/src/panfrost/bifrost/bifrost.h
@@ -110,6 +110,8 @@ struct bifrost_fma_2src {
} __attribute__((packed));
#define BIFROST_ADD_OP_BLEND (0x1952c)
+#define BIFROST_ADD_OP_FRCP_FAST_F32 (0x0cc00)
+#define BIFROST_ADD_OP_FRSQ_FAST_F32 (0x0cc20)
struct bifrost_add_inst {
unsigned src0 : 3;
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