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dev-amdgpu,configs,gpu-compute: Add gfx942 version

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This is the version for MI300. For the most part, it is the same as
MI200 with the exception of architected flat scratch (not yet
implemented in gem5) and therefore a new version enum is required.

Change-Id: Id18cd7b57c4eebd467c010a3f61e3117beb8d58a
This commit is contained in:
Matthew Poremba
2024-05-15 10:49:05 -07:00
parent 65976e4c6d
commit 8be5ce6fc9
10 changed files with 39 additions and 24 deletions
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2
src/gpu-compute/GPU.py
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@@ -45,7 +45,7 @@ class PrefetchType(Enum):
class GfxVersion(ScopedEnum):
vals = ["gfx900", "gfx902", "gfx908", "gfx90a"]
vals = ["gfx900", "gfx902", "gfx908", "gfx90a", "gfx942"]
class PoolManager(SimObject):

10
src/gpu-compute/hsa_queue_entry.hh
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@@ -94,9 +94,10 @@ class HSAQueueEntry
// LLVM docs: https://www.llvm.org/docs/AMDGPUUsage.html
// #code-object-v3-kernel-descriptor
//
// Currently, the only supported gfx version in gem5 that computes
// VGPR count differently is gfx90a.
if (gfx_version == GfxVersion::gfx90a) {
// Currently, the only supported gfx versions in gem5 that compute
// VGPR count differently are gfx90a and gfx942.
if (gfx_version == GfxVersion::gfx90a ||
gfx_version == GfxVersion::gfx942) {
numVgprs = (akc->granulated_workitem_vgpr_count + 1) * 8;
} else {
numVgprs = (akc->granulated_workitem_vgpr_count + 1) * 4;
@@ -107,7 +108,8 @@ class HSAQueueEntry
if (gfx_version == GfxVersion::gfx900 ||
gfx_version == GfxVersion::gfx902 ||
gfx_version == GfxVersion::gfx908 ||
gfx_version == GfxVersion::gfx90a) {
gfx_version == GfxVersion::gfx90a ||
gfx_version == GfxVersion::gfx942) {
numSgprs = ((akc->granulated_wavefront_sgpr_count + 1) * 16)/2;
} else {
panic("Saw unknown gfx version setting up GPR counts\n");

3
src/gpu-compute/wavefront.cc
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@@ -442,7 +442,8 @@ Wavefront::initRegState(HSAQueueEntry *task, int wgSizeInWorkItems)
// Default to false and set to true for gem5 supported ISAs.
bool packed_work_item_id = false;
if (task->gfxVersion() == GfxVersion::gfx90a) {
if (task->gfxVersion() == GfxVersion::gfx90a ||
task->gfxVersion() == GfxVersion::gfx942) {
packed_work_item_id = true;
}