Reviewed-by: Ilia Mirkin <imir...@alum.mit.edu>
On Mon, Mar 7, 2016 at 12:57 PM, Samuel Pitoiset
<samuel.pitoi...@gmail.com> wrote:
> This allows to perform atomic operations on shared memory.
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
> ---
> .../drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp | 45
> +++++++++++++++++++++-
> 1 file changed, 44 insertions(+), 1 deletion(-)
>
> diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
> b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
> index 0e621e0..e079a57 100644
> --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
> +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
> @@ -177,6 +177,7 @@ private:
> void emitAL2P();
> void emitIPA();
> void emitATOM();
> + void emitATOMS();
> void emitCCTL();
>
> void emitPIXLD();
> @@ -2374,6 +2375,45 @@ CodeEmitterGM107::emitATOM()
> }
>
> void
> +CodeEmitterGM107::emitATOMS()
> +{
> + unsigned dType, subOp;
> +
> + if (insn->subOp == NV50_IR_SUBOP_ATOM_CAS) {
> + switch (insn->dType) {
> + case TYPE_U32: dType = 0; break;
> + case TYPE_U64: dType = 1; break;
> + default: assert(!"unexpected dType"); dType = 0; break;
> + }
> + subOp = 4;
> +
> + emitInsn (0xee000000);
> + emitField(0x34, 1, dType);
> + } else {
> + switch (insn->dType) {
> + case TYPE_U32: dType = 0; break;
> + case TYPE_S32: dType = 1; break;
> + case TYPE_U64: dType = 2; break;
> + case TYPE_S64: dType = 3; break;
> + default: assert(!"unexpected dType"); dType = 0; break;
> + }
> +
> + if (insn->subOp == NV50_IR_SUBOP_ATOM_EXCH)
> + subOp = 8;
> + else
> + subOp = insn->subOp;
> +
> + emitInsn (0xec000000);
> + emitField(0x1c, 3, dType);
> + }
> +
> + emitField(0x34, 4, subOp);
> + emitGPR (0x14, insn->src(1));
> + emitADDR (0x08, 0x12, 22, 0, insn->src(0));
> + emitGPR (0x00, insn->def(0));
> +}
> +
> +void
> CodeEmitterGM107::emitCCTL()
> {
> unsigned width;
> @@ -2967,7 +3007,10 @@ CodeEmitterGM107::emitInstruction(Instruction *i)
> }
> break;
> case OP_ATOM:
> - emitATOM();
> + if (insn->src(0).getFile() == FILE_MEMORY_SHARED)
> + emitATOMS();
> + else
> + emitATOM();
> break;
> case OP_CCTL:
> emitCCTL();
> --
> 2.7.1
>
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