Merge branch 'pci/ecam'

- Reserve ECAM if BIOS didn't include it in PNP0C02 _CRS (Bjorn Helgaas)

- Add MMCONFIG/ECAM debug logging (Bjorn Helgaas)

- Rename 'MMCONFIG' to 'ECAM' to match spec usage (Bjorn Helgaas)

* pci/ecam:
  x86/pci: Reorder pci_mmcfg_arch_map() definition before calls
  x86/pci: Return pci_mmconfig_add() failure early
  x86/pci: Comment pci_mmconfig_insert() obscure MCFG dependency
  x86/pci: Rename pci_mmcfg_check_reserved() to pci_mmcfg_reserved()
  x86/pci: Rename acpi_mcfg_check_entry() to acpi_mcfg_valid_entry()
  x86/pci: Rename 'MMCONFIG' to 'ECAM', use pr_fmt
  x86/pci: Add MCFG debug logging
  x86/pci: Reword ECAM EfiMemoryMappedIO logging to avoid 'reserved'
  x86/pci: Reserve ECAM if BIOS didn't include it in PNP0C02 _CRS

Author: bjorn-helgaas

arch/x86/pci/acpi.c

@@ -283,6 +283,9 @@ static int setup_mcfg_map(struct acpi_pci_root_info *ci)
 	info->mcfg_added = false;
 	seg = info->sd.domain;
 
+	dev_dbg(dev, "%s(%04x %pR ECAM %pa)\n", __func__, seg,
+		&root->secondary, &root->mcfg_addr);
+
 	/* return success if MMCFG is not in use */
 	if (raw_pci_ext_ops && raw_pci_ext_ops != &pci_mmcfg)
 		return 0;