Author: manu Date: Fri May 17 17:04:01 2019 New Revision: 347929 URL: https://svnweb.freebsd.org/changeset/base/347929
Log: pci: ecam: Do not warn on mismatch of bus_end We cannot know the bus end number before parsing the MCFG table so don't set the bus_end before that. If the MCFG table doesn't exist we will set the configuration base address based on the _CBA value and set the bus_end to the maximal number allowed by PCI. Sponsored by: Ampere Computing, LLC Differential Revision: https://reviews.freebsd.org/D20213 Modified: head/sys/dev/pci/pci_host_generic_acpi.c Modified: head/sys/dev/pci/pci_host_generic_acpi.c ============================================================================== --- head/sys/dev/pci/pci_host_generic_acpi.c Fri May 17 16:41:18 2019 (r347928) +++ head/sys/dev/pci/pci_host_generic_acpi.c Fri May 17 17:04:01 2019 (r347929) @@ -207,11 +207,7 @@ pci_host_acpi_get_ecam_resource(device_t dev) mcfg_entry++; } if (found) { - if (mcfg_entry->EndBusNumber < sc->base.bus_end) { - device_printf(dev, "bus end mismatch! expected %d found %d.\n", - sc->base.bus_end, (int)mcfg_entry->EndBusNumber); - sc->base.bus_end = mcfg_entry->EndBusNumber; - } + sc->base.bus_end = mcfg_entry->EndBusNumber; base = mcfg_entry->Address; } else { device_printf(dev, "MCFG exists, but does not have bus %d-%d\n", @@ -220,9 +216,10 @@ pci_host_acpi_get_ecam_resource(device_t dev) } } else { status = acpi_GetInteger(handle, "_CBA", &val); - if (ACPI_SUCCESS(status)) + if (ACPI_SUCCESS(status)) { base = val; - else + sc->base.bus_end = 255; + } else return (ENXIO); } @@ -259,7 +256,6 @@ pci_host_generic_acpi_attach(device_t dev) device_printf(dev, "No _BBN, using start bus 0\n"); sc->base.bus_start = 0; } - sc->base.bus_end = 255; /* Get PCI Segment (domain) needed for MCFG lookup */ status = acpi_GetInteger(handle, "_SEG", &sc->base.ecam); _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
