nouveau: codegen: Add support for OpenCL global memory buffers

Add support for OpenCL global memory buffers, note this has only
been tested with regular load and stores and likely needs more work
for e.g. atomic ops.

Tested with piglet on a gf119 and a gk107:
./piglit run -o shader -t '.*arb_shader_storage_buffer_object.*' results/shader
[9/9] pass: 9 /
./piglit run -o shader -t '.*arb_compute_shader.*' results/shader
[20/20] skip: 4, pass: 16 |

Signed-off-by: Hans de Goede <[email protected]>
Reviewed-by: Samuel Pitoiset <[email protected]>

1 files changed, 10 insertions, 2 deletions

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
index 0fa6cc4278e..557608ee977 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
@@ -1289,7 +1289,9 @@ bool Source::scanInstruction(const struct tgsi_full_instruction *inst)
          if (dst.isIndirect(0))
             indirectTempArrays.insert(dst.getArrayId());
       } else
-      if (dst.getFile() == TGSI_FILE_BUFFER) {
+      if (dst.getFile() == TGSI_FILE_BUFFER ||
+          (dst.getFile() == TGSI_FILE_MEMORY &&
+           memoryFiles[dst.getIndex(0)].mem_type == TGSI_MEMORY_TYPE_GLOBAL)) {
          info->io.globalAccess |= 0x2;
       }
    }
@@ -1300,7 +1302,9 @@ bool Source::scanInstruction(const struct tgsi_full_instruction *inst)
          if (src.isIndirect(0))
             indirectTempArrays.insert(src.getArrayId());
       } else
-      if (src.getFile() == TGSI_FILE_BUFFER) {
+      if (src.getFile() == TGSI_FILE_BUFFER ||
+          (src.getFile() == TGSI_FILE_MEMORY &&
+           memoryFiles[src.getIndex(0)].mem_type == TGSI_MEMORY_TYPE_GLOBAL)) {
          info->io.globalAccess |= (insn.getOpcode() == TGSI_OPCODE_LOAD) ?
                0x1 : 0x2;
       } else
@@ -1534,6 +1538,10 @@ Converter::makeSym(uint tgsiFile, int fileIdx, int idx, int c, uint32_t address)
 
    if (tgsiFile == TGSI_FILE_MEMORY) {
       switch (code->memoryFiles[fileIdx].mem_type) {
+      case TGSI_MEMORY_TYPE_GLOBAL:
+         /* No-op this is the default for TGSI_FILE_MEMORY */
+         sym->setFile(FILE_MEMORY_GLOBAL);
+         break;
       case TGSI_MEMORY_TYPE_SHARED:
          sym->setFile(FILE_MEMORY_SHARED);
          break;