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panfrost: Add UBO push data structure 

Will be used to generalize RMU on Midgard and also to support Bifrost's
FAU (which is essentially the same thing).

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8973>
This commit is contained in:
Alyssa Rosenzweig 2021-02-07 11:08:33 -05:00 committed by Marge Bot
parent ed810eb0a0
commit d4dccea0ba
1 changed files with 23 additions and 0 deletions
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23
src/panfrost/util/pan_ir.h
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@ -78,6 +78,25 @@ struct panfrost_sysvals {
struct hash_table_u64 *sysval_to_id;
};
/* Technically Midgard could go up to 92 in a pathological case but we don't
* take advantage of that. Likewise Bifrost's FAU encoding can address 128
* words but actual implementations (G72, G76) are capped at 64 */
#define PAN_MAX_PUSH 64
/* Architectural invariants (Midgard and Bifrost): UBO must be <= 2^16 bytes so
* an offset to a word must be < 2^16. There are less than 2^8 UBOs */
struct panfrost_ubo_word {
uint16_t ubo;
uint16_t offset;
};
struct panfrost_ubo_push {
unsigned count;
struct panfrost_ubo_word words[PAN_MAX_PUSH];
};
void
panfrost_nir_assign_sysvals(struct panfrost_sysvals *ctx, void *memctx, nir_shader *shader);
@ -100,6 +119,10 @@ typedef struct {
unsigned sysval_count;
unsigned sysvals[MAX_SYSVAL_COUNT];
/* UBOs to push to Register Mapped Uniforms (Midgard) or Fast Access
* Uniforms (Bifrost) */
struct panfrost_ubo_push push;
int first_tag;
struct util_dynarray compiled;