table of contents
| PCI_ENABLE_ATOMIC_OP(9) | Hardware Interfaces | PCI_ENABLE_ATOMIC_OP(9) |
NAME¶
pci_enable_atomic_ops_to_root - enable AtomicOp requests to root port
SYNOPSIS¶
int pci_enable_atomic_ops_to_root(struct pci_dev * dev, u32 cap_mask);
ARGUMENTS¶
dev
the PCI device
cap_mask
mask of desired AtomicOp sizes, including one or more of:
PCI_EXP_DEVCAP2_ATOMIC_COMP32 PCI_EXP_DEVCAP2_ATOMIC_COMP64
PCI_EXP_DEVCAP2_ATOMIC_COMP128
DESCRIPTION¶
Return 0 if all upstream bridges support AtomicOp routing, egress blocking is disabled on all upstream ports, and the root port supports the requested completion capabilities (32-bit, 64-bit and/or 128-bit AtomicOp completion), or negative otherwise.
COPYRIGHT¶
| June 2023 | Kernel Hackers Manual 3.10 |