Module Name: src
Committed By: jmcneill
Date: Fri Oct 15 18:51:39 UTC 2021
Modified Files:
src/sys/arch/x86/pci: pci_machdep.c
Log Message:
Disable MSI and MSI-X support if IAPC_BOOT_ARCH reports that MSI is not
supported.
To generate a diff of this commit:
cvs rdiff -u -r1.88 -r1.89 src/sys/arch/x86/pci/pci_machdep.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/x86/pci/pci_machdep.c
diff -u src/sys/arch/x86/pci/pci_machdep.c:1.88 src/sys/arch/x86/pci/pci_machdep.c:1.89
--- src/sys/arch/x86/pci/pci_machdep.c:1.88 Thu Jan 28 01:57:31 2021
+++ src/sys/arch/x86/pci/pci_machdep.c Fri Oct 15 18:51:38 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: pci_machdep.c,v 1.88 2021/01/28 01:57:31 jmcneill Exp $ */
+/* $NetBSD: pci_machdep.c,v 1.89 2021/10/15 18:51:38 jmcneill Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
@@ -73,7 +73,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.88 2021/01/28 01:57:31 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.89 2021/10/15 18:51:38 jmcneill Exp $");
#include <sys/types.h>
#include <sys/param.h>
@@ -534,6 +534,16 @@ pci_attach_hook(device_t parent, device_
aprint_verbose("\n");
aprint_verbose_dev(self,
"This pci host does not support MSI-X.");
+#if NACPICA > 0
+ } else if (acpi_active &&
+ AcpiGbl_FADT.Header.Revision >= 4 &&
+ (AcpiGbl_FADT.BootFlags & ACPI_FADT_NO_MSI) != 0) {
+ pba->pba_flags &= ~PCI_FLAGS_MSI_OKAY;
+ pba->pba_flags &= ~PCI_FLAGS_MSIX_OKAY;
+ aprint_verbose("\n");
+ aprint_verbose_dev(self,
+ "MSI support disabled via ACPI IAPC_BOOT_ARCH flag.\n");
+#endif
} else {
pba->pba_flags |= PCI_FLAGS_MSI_OKAY;
pba->pba_flags |= PCI_FLAGS_MSIX_OKAY;
