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r600/sfn: Prepare scheduler to handle WaitAck instructions

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Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37096>
This commit is contained in:
Gert Wollny 2025-08-28 13:33:09 +02:00 • committed by Marge Bot
parent b1166f3def
commit a6b6ce84f7
1 changed files with 22 additions and 2 deletions
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24
src/gallium/drivers/r600/sfn/sfn_scheduler.cpp
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@ -61,8 +61,11 @@ public:
void visit(ControlFlowInstr *instr) override
{
assert(!m_cf_instr);
m_cf_instr = instr;
if (instr->cf_type() != ControlFlowInstr::cf_wait_ack) {
assert(!m_cf_instr);
m_cf_instr = instr;
} else
waitacks.push_back(instr);
}
void visit(IfInstr *instr) override
@ -116,6 +119,7 @@ public:
std::list<FetchInstr *> fetches;
std::list<Instr *> free_instr;
std::list<Instr *> gds_instr;
std::list<Instr *> waitacks;
Instr *m_cf_instr{nullptr};
ValueFactory& m_value_factory;
@ -192,6 +196,7 @@ private:
std::list<FetchInstr *> fetches_ready;
std::list<Instr *> free_ready;
std::list<Instr *> gds_ready;
std::list<Instr *> waitacks_ready;
enum {
sched_alu,
@ -199,6 +204,7 @@ private:
sched_fetch,
sched_free,
sched_gds,
sched_waitack,
} current_shed;
ExportInstr *m_last_pos;
@ -338,6 +344,8 @@ BlockScheduler::schedule_block(Block& in_block,
sfn_log << SfnLog::schedule << " GENERIC:" << free_ready.size() << "\n";
if (gds_ready.size())
sfn_log << SfnLog::schedule << " GDS:" << gds_ready.size() << "\n";
if (waitacks_ready.size())
sfn_log << SfnLog::schedule << " WAITACK:" << waitacks_ready.size() << "\n";
if (!m_current_block->lds_group_active() &&
m_current_block->expected_ar_uses() == 0) {
@ -348,6 +356,11 @@ BlockScheduler::schedule_block(Block& in_block,
}
switch (current_shed) {
case sched_waitack:
if (waitacks_ready.empty() || !schedule_cf(out_blocks, waitacks_ready)) {
current_shed = sched_alu;
break;
}
case sched_alu:
if (!schedule_alu(out_blocks, vf)) {
assert(!m_current_block->lds_group_active());
@ -386,6 +399,12 @@ BlockScheduler::schedule_block(Block& in_block,
}
have_instr = collect_ready(cir);
if (alu_vec_ready.empty() && alu_multi_slot_ready.empty() &&
alu_trans_ready.empty() && alu_groups_ready.empty() && tex_ready.empty() &&
exports_ready.empty() && fetches_ready.empty() && free_ready.empty() &&
gds_ready.empty())
current_shed = sched_waitack;
}
/* Emit exports always at end of a block */
@ -1104,6 +1123,7 @@ BlockScheduler::collect_ready(CollectInstructions& available)
result |= collect_ready_type(tex_ready, available.tex);
result |= collect_ready_type(fetches_ready, available.fetches);
result |= collect_ready_type(free_ready, available.free_instr);
result |= collect_ready_type(waitacks_ready, available.waitacks);
sfn_log << SfnLog::schedule << "\n";
return result;