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pan/bi: Add 32-bit _FAST packing 

For frcp/frsq on newer Bifrost.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4470>
This commit is contained in:
Alyssa Rosenzweig 2020-04-06 10:15:34 -04:00 committed by Marge Bot
parent a6ae2d8f94
commit d7bb7b79a8
2 changed files with 28 additions and 0 deletions
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26
src/panfrost/bifrost/bi_pack.c
View File

@ -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:

2
src/panfrost/bifrost/bifrost.h
View File

@ -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;