[Mesa-dev] [PATCH] gm107/ir: add emission for ATOMS

[Ilia Mirkin]

Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>

On Mon, Mar 7, 2016 at 12:57 PM, Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
> This allows to perform atomic operations on shared memory.
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoiset at 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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