diff options
| -rw-r--r-- | core/pci.c | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -605,9 +605,31 @@ static int pci_configure_mps(struct phb *phb, return 0; } +static void pci_disable_completion_timeout(struct phb *phb, struct pci_device *pd) +{ + uint32_t ecap; + uint32_t val; + + /* PCIE capability required */ + if (!pci_has_cap(pd, PCI_CFG_CAP_ID_EXP, false)) + return; + + /* Check if it has capability to disable completion timeout */ + ecap = pci_cap(pd, PCI_CFG_CAP_ID_EXP, false); + pci_cfg_read32(phb, pd->bdfn, ecap + PCIECAP_EXP_DCAP2, &val); + if (!(val & PCICAP_EXP_DCAP2_CMPTOUT_DIS)) + return; + + /* Disable completion timeout without more check */ + pci_cfg_read32(phb, pd->bdfn, ecap + PCICAP_EXP_DCTL2, &val); + val |= PCICAP_EXP_DCTL2_CMPTOUT_DIS; + pci_cfg_write32(phb, pd->bdfn, ecap + PCICAP_EXP_DCTL2, val); +} + void pci_device_init(struct phb *phb, struct pci_device *pd) { pci_configure_mps(phb, pd, NULL); + pci_disable_completion_timeout(phb, pd); } /* |