diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/5690-drm-amdkfd-Try-to-enable-atomics-for-all-GPUs.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/5690-drm-amdkfd-Try-to-enable-atomics-for-all-GPUs.patch | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/5690-drm-amdkfd-Try-to-enable-atomics-for-all-GPUs.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/5690-drm-amdkfd-Try-to-enable-atomics-for-all-GPUs.patch new file mode 100644 index 00000000..d11b5556 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/5690-drm-amdkfd-Try-to-enable-atomics-for-all-GPUs.patch @@ -0,0 +1,60 @@ +From 447658699284a95a9ce3458415c954206dd3882c Mon Sep 17 00:00:00 2001 +From: welu <Wei.Lu2@amd.com> +Date: Tue, 10 Apr 2018 17:33:17 -0400 +Subject: [PATCH 5690/5725] drm/amdkfd: Try to enable atomics for all GPUs + +Report failure to enable atomics only on GPUs that require them. +This allows GPUs that don't require atomics to function, but can +benefit if they are available. This is the case for Vega10, which +doesn't use atomics for basic functioning of the MEC, AQL and HWS +microcode. So it can work without atomics. But shader programs can +still use atomic instructions on systems that support PCIe atomics. + +Signed-off-by: welu <Wei.Lu2@amd.com> +Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> +Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> +Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com> +--- + drivers/gpu/drm/amd/amdkfd/kfd_device.c | 26 +++++++++++++------------- + 1 file changed, 13 insertions(+), 13 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c +index 20a20ed..fc7eb66 100644 +--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c ++++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c +@@ -400,19 +400,19 @@ struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, + dev_err(kfd_device, "kgd2kfd_probe failed\n"); + return NULL; + } +- if (device_info->needs_pci_atomics) { +- /* Allow BIF to recode atomics to PCIe 3.0 +- * AtomicOps. 32 and 64-bit requests are possible and +- * must be supported. +- */ +- if (pci_enable_atomic_ops_to_root(pdev, +- PCI_EXP_DEVCAP2_ATOMIC_COMP32 | +- PCI_EXP_DEVCAP2_ATOMIC_COMP64) < 0) { +- dev_info(kfd_device, +- "skipped device %x:%x, PCI rejects atomics", +- pdev->vendor, pdev->device); +- return NULL; +- } ++ ++ /* Allow BIF to recode atomics to PCIe 3.0 AtomicOps. ++ * 32 and 64-bit requests are possible and must be ++ * supported. ++ */ ++ ret = pci_enable_atomic_ops_to_root(pdev, ++ PCI_EXP_DEVCAP2_ATOMIC_COMP32 | ++ PCI_EXP_DEVCAP2_ATOMIC_COMP64); ++ if (device_info->needs_pci_atomics && ret < 0) { ++ dev_info(kfd_device, ++ "skipped device %x:%x, PCI rejects atomics\n", ++ pdev->vendor, pdev->device); ++ return NULL; + } + + kfd = kzalloc(sizeof(*kfd), GFP_KERNEL); +-- +2.7.4 + |