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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/x86/pci/init.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/pci/init.c')
-rw-r--r--arch/x86/pci/init.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/x86/pci/init.c b/arch/x86/pci/init.c
new file mode 100644
index 0000000000..0bb3b8b44e
--- /dev/null
+++ b/arch/x86/pci/init.c
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <asm/pci_x86.h>
+#include <asm/x86_init.h>
+#include <asm/irqdomain.h>
+
+/* arch_initcall has too random ordering, so call the initializers
+ in the right sequence from here. */
+static __init int pci_arch_init(void)
+{
+ int type, pcbios = 1;
+
+ type = pci_direct_probe();
+
+ if (!(pci_probe & PCI_PROBE_NOEARLY))
+ pci_mmcfg_early_init();
+
+ if (x86_init.pci.arch_init)
+ pcbios = x86_init.pci.arch_init();
+
+ /*
+ * Must happen after x86_init.pci.arch_init(). Xen sets up the
+ * x86_init.irqs.create_pci_msi_domain there.
+ */
+ x86_create_pci_msi_domain();
+
+ if (!pcbios)
+ return 0;
+
+ pci_pcbios_init();
+
+ /*
+ * don't check for raw_pci_ops here because we want pcbios as last
+ * fallback, yet it's needed to run first to set pcibios_last_bus
+ * in case legacy PCI probing is used. otherwise detecting peer busses
+ * fails.
+ */
+ pci_direct_init(type);
+
+ if (!raw_pci_ops && !raw_pci_ext_ops)
+ printk(KERN_ERR
+ "PCI: Fatal: No config space access function found\n");
+
+ dmi_check_pciprobe();
+
+ dmi_check_skip_isa_align();
+
+ return 0;
+}
+arch_initcall(pci_arch_init);