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| author | Bjorn Helgaas <bhelgaas@google.com> | 2018-10-20 11:45:28 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-10-20 11:45:28 -0500 |
| commit | de468b755464426c276df2daf1e54bcd64186020 (patch) | |
| tree | 85d70498798e2112fad41d5b0e5e29a520d6bed6 /drivers/pci | |
| parent | b1801bf05964321d79fbbeae96c8ab09da2e2e49 (diff) | |
| parent | d6112f8def514e019658bcc9b57d53acdb71ca3f (diff) | |
| download | lwn-de468b755464426c276df2daf1e54bcd64186020.tar.gz lwn-de468b755464426c276df2daf1e54bcd64186020.zip | |
Merge branch 'pci/enumeration'
- Remove x86 and arm64 node-local allocation for host bridge structures
(Punit Agrawal)
- Pay attention to device-specific _PXM node values (Jonathan Cameron)
- Support new Immediate Readiness bit (Felipe Balbi)
* pci/enumeration:
PCI: Add support for Immediate Readiness
ACPI/PCI: Pay attention to device-specific _PXM node values
x86/PCI: Remove node-local allocation when initialising host controller
arm64: PCI: Remove node-local allocations when initialising host controller
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci-acpi.c | 5 | ||||
| -rw-r--r-- | drivers/pci/pci.c | 13 |
2 files changed, 17 insertions, 1 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index c2ab57705043..8f75ba068d45 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -751,10 +751,15 @@ static void pci_acpi_setup(struct device *dev) { struct pci_dev *pci_dev = to_pci_dev(dev); struct acpi_device *adev = ACPI_COMPANION(dev); + int node; if (!adev) return; + node = acpi_get_node(adev->handle); + if (node != NUMA_NO_NODE) + set_dev_node(dev, node); + pci_acpi_optimize_delay(pci_dev, adev->handle); pci_acpi_add_pm_notifier(adev, pci_dev); diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 1835f3a7aa8d..ee7c2f4eef9b 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -999,7 +999,7 @@ static void __pci_start_power_transition(struct pci_dev *dev, pci_power_t state) * because have already delayed for the bridge. */ if (dev->runtime_d3cold) { - if (dev->d3cold_delay) + if (dev->d3cold_delay && !dev->imm_ready) msleep(dev->d3cold_delay); /* * When powering on a bridge from D3cold, the @@ -2644,6 +2644,7 @@ EXPORT_SYMBOL_GPL(pci_d3cold_disable); void pci_pm_init(struct pci_dev *dev) { int pm; + u16 status; u16 pmc; pm_runtime_forbid(&dev->dev); @@ -2706,6 +2707,10 @@ void pci_pm_init(struct pci_dev *dev) /* Disable the PME# generation functionality */ pci_pme_active(dev, false); } + + pci_read_config_word(dev, PCI_STATUS, &status); + if (status & PCI_STATUS_IMM_READY) + dev->imm_ready = 1; } static unsigned long pci_ea_flags(struct pci_dev *dev, u8 prop) @@ -4376,6 +4381,9 @@ int pcie_flr(struct pci_dev *dev) pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR); + if (dev->imm_ready) + return 0; + /* * Per PCIe r4.0, sec 6.6.2, a device must complete an FLR within * 100ms, but may silently discard requests while the FLR is in @@ -4417,6 +4425,9 @@ static int pci_af_flr(struct pci_dev *dev, int probe) pci_write_config_byte(dev, pos + PCI_AF_CTRL, PCI_AF_CTRL_FLR); + if (dev->imm_ready) + return 0; + /* * Per Advanced Capabilities for Conventional PCI ECN, 13 April 2006, * updated 27 July 2006; a device must complete an FLR within |