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This commit is contained in:
Andy Ritger
2022-10-10 14:59:24 -07:00
parent fe0728787f
commit 90eb10774f
758 changed files with 88383 additions and 26493 deletions
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86
kernel-open/nvidia/os-pci.c
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@@ -158,49 +158,47 @@ void NV_API_CALL os_pci_remove(
#endif
}
NV_STATUS NV_API_CALL
os_enable_pci_req_atomics(
void *handle,
enum os_pci_req_atomics_type type
)
{
#ifdef NV_PCI_ENABLE_ATOMIC_OPS_TO_ROOT_PRESENT
int ret;
u16 val;
switch (type)
{
case OS_INTF_PCIE_REQ_ATOMICS_32BIT:
ret = pci_enable_atomic_ops_to_root(handle,
PCI_EXP_DEVCAP2_ATOMIC_COMP32);
break;
case OS_INTF_PCIE_REQ_ATOMICS_64BIT:
ret = pci_enable_atomic_ops_to_root(handle,
PCI_EXP_DEVCAP2_ATOMIC_COMP64);
break;
case OS_INTF_PCIE_REQ_ATOMICS_128BIT:
ret = pci_enable_atomic_ops_to_root(handle,
PCI_EXP_DEVCAP2_ATOMIC_COMP128);
break;
default:
ret = -1;
break;
}
if (ret == 0)
{
/*
* GPUs that don't support Requester Atomics have its
* PCI_EXP_DEVCTL2_ATOMIC_REQ always set to 0 even after SW enables it.
*/
if ((pcie_capability_read_word(handle, PCI_EXP_DEVCTL2, &val) == 0) &&
(val & PCI_EXP_DEVCTL2_ATOMIC_REQ))
{
return NV_OK;
}
}
#endif
return NV_ERR_NOT_SUPPORTED;
}