From af7828fbceed4f9e503034111066a0adef3db383 Mon Sep 17 00:00:00 2001
From: Yifan Zhang <yifan1.zhang@amd.com>
Date: Thu, 27 Apr 2023 14:01:05 +0800
Subject: [PATCH] drm/amdgpu: set gfx9 onwards APU atomics support to be true
Git-commit: af7828fbceed4f9e503034111066a0adef3db383
Patch-mainline: v6.4-rc2
References: git-fixes
APUs w/ gfx9 onwards doesn't reply on PCIe atomics, rather
it is internal path w/ native atomic support. Set have_atomics_support
to true.
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Lang Yu <lang.yu@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 981a9cfb63b5..e348a62ec0ec 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3757,6 +3757,12 @@ int amdgpu_device_init(struct amdgpu_device *adev,
adev->have_atomics_support = ((struct amd_sriov_msg_pf2vf_info *)
adev->virt.fw_reserve.p_pf2vf)->pcie_atomic_ops_support_flags ==
(PCI_EXP_DEVCAP2_ATOMIC_COMP32 | PCI_EXP_DEVCAP2_ATOMIC_COMP64);
+ /* APUs w/ gfx9 onwards doesn't reply on PCIe atomics, rather it is a
+ * internal path natively support atomics, set have_atomics_support to true.
+ */
+ else if ((adev->flags & AMD_IS_APU) &&
+ (adev->ip_versions[GC_HWIP][0] > IP_VERSION(9, 0, 0)))
+ adev->have_atomics_support = true;
else
adev->have_atomics_support =
!pci_enable_atomic_ops_to_root(adev->pdev,
--
2.35.3