Date: Tue, 15 Oct 2019 19:12:09 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r353587 - head/sys/dev/acpica Message-ID: <201910151912.x9FJC9Tc084441@repo.freebsd.org>
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Author: jhb Date: Tue Oct 15 19:12:09 2019 New Revision: 353587 URL: https://svnweb.freebsd.org/changeset/base/353587 Log: Install an ACPI PCI bus notify handler. Rescan a PCI bus when the ACPI_NOTIFY_BUS_CHECK event is posted to a PCI bus. Reviewed by: scottl MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D21948 Modified: head/sys/dev/acpica/acpi_pci.c Modified: head/sys/dev/acpica/acpi_pci.c ============================================================================== --- head/sys/dev/acpica/acpi_pci.c Tue Oct 15 19:04:39 2019 (r353586) +++ head/sys/dev/acpica/acpi_pci.c Tue Oct 15 19:12:09 2019 (r353587) @@ -331,6 +331,25 @@ acpi_pci_probe(device_t dev) } static void +acpi_pci_bus_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) +{ + device_t dev; + + dev = context; + + switch (notify) { + case ACPI_NOTIFY_BUS_CHECK: + mtx_lock(&Giant); + BUS_RESCAN(dev); + mtx_unlock(&Giant); + break; + default: + device_printf(dev, "unknown notify %#x\n", notify); + break; + } +} + +static void acpi_pci_device_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context) { device_t child, dev; @@ -401,6 +420,8 @@ acpi_pci_attach(device_t dev) error = pci_attach(dev); if (error) return (error); + AcpiInstallNotifyHandler(acpi_get_handle(dev), ACPI_SYSTEM_NOTIFY, + acpi_pci_bus_notify_handler, dev); AcpiWalkNamespace(ACPI_TYPE_DEVICE, acpi_get_handle(dev), 1, acpi_pci_install_device_notify_handler, NULL, dev, NULL); @@ -429,6 +450,8 @@ acpi_pci_detach(device_t dev) AcpiWalkNamespace(ACPI_TYPE_DEVICE, acpi_get_handle(dev), 1, acpi_pci_remove_notify_handler, NULL, dev, NULL); + AcpiRemoveNotifyHandler(acpi_get_handle(dev), ACPI_SYSTEM_NOTIFY, + acpi_pci_bus_notify_handler); return (pci_detach(dev)); }
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