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pan/bi: Model 3-bit Bifrost srcs in IR

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We'll want to set these manually for schedule-time passthrough, as well
as use the enum for packing.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4242>
This commit is contained in:
Alyssa Rosenzweig 2020-03-18 09:57:32 -04:00 • committed by Marge Bot
parent fe379776c7
commit cd40e189b6
2 changed files with 14 additions and 1 deletions
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11
src/panfrost/bifrost/bifrost.h
View file

@ -72,6 +72,17 @@ struct bifrost_header {
unsigned unk4 : 1; // part of nextClauseType?
} __attribute__((packed));
enum bifrost_packed_src {
BIFROST_SRC_PORT0 = 0,
BIFROST_SRC_PORT1 = 1,
BIFROST_SRC_PORT3 = 2,
BIFROST_SRC_STAGE = 3,
BIFROST_SRC_CONST_LO = 4,
BIFROST_SRC_CONST_HI = 5,
BIFROST_SRC_PASS_FMA = 6,
BIFROST_SRC_PASS_ADD = 7,
};
struct bifrost_fma_inst {
unsigned src0 : 3;
unsigned op : 20;

4
src/panfrost/bifrost/compiler.h
View file

@ -371,17 +371,19 @@ bi_remove_instruction(bi_instruction *ins)
* Uniform: access a uniform register given by low bits.
* Constant: access the specified constant
* Zero: special cased to avoid wasting a constant
* Passthrough: a bifrost_packed_src to passthrough T/T0/T1
*/
#define BIR_INDEX_REGISTER (1 << 31)
#define BIR_INDEX_UNIFORM (1 << 30)
#define BIR_INDEX_CONSTANT (1 << 29)
#define BIR_INDEX_ZERO (1 << 28)
#define BIR_INDEX_PASS (1 << 27)
/* Keep me synced please so we can check src & BIR_SPECIAL */
#define BIR_SPECIAL ((BIR_INDEX_REGISTER | BIR_INDEX_UNIFORM) | \
(BIR_INDEX_CONSTANT | BIR_INDEX_ZERO))
(BIR_INDEX_CONSTANT | BIR_INDEX_ZERO | BIR_INDEX_PASS))
static inline unsigned
bi_max_temp(bi_context *ctx)