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authorThomas Gleixner <tglx@linutronix.de>2009-08-29 16:24:51 +0200
committerH. Peter Anvin <hpa@zytor.com>2010-02-19 16:12:29 -0800
commitb72d0db9dd41da1f2ec6274b03e8909583c64e41 (patch)
tree6424768067546f3aa4bd2e5d0a11d6459a6aad51 /arch/x86/kernel
parentcf4c43dd439b90a1a876b3f836ebe745abb9a269 (diff)
x86: Move pci init function to x86_init
The PCI initialization in pci_subsys_init() is a mess. pci_numaq_init, pci_acpi_init, pci_visws_init and pci_legacy_init are called and each implementation checks and eventually modifies the global variable pcibios_scanned. x86_init functions allow us to do this more elegant. The pci.init function pointer is preset to pci_legacy_init. numaq, acpi and visws can modify the pointer in their early setup functions. The functions return 0 when they did the full initialization including bus scan. A non zero return value indicates that pci_legacy_init needs to be called either because the selected function failed or wants the generic bus scan in pci_legacy_init to happen (e.g. visws). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <43F901BD926A4E43B106BF17856F07559FB80CFE@orsmsx508.amr.corp.intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/acpi/boot.c4
-rw-r--r--arch/x86/kernel/apic/numaq_32.c1
-rw-r--r--arch/x86/kernel/visws_quirks.c6
-rw-r--r--arch/x86/kernel/x86_init.c5
4 files changed, 11 insertions, 5 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 0acbcdfa5ca4..054a5f5548b0 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -35,6 +35,7 @@
#include <linux/ioport.h>
#include <linux/pci.h>
+#include <asm/pci_x86.h>
#include <asm/pgtable.h>
#include <asm/io_apic.h>
#include <asm/apic.h>
@@ -1604,6 +1605,9 @@ int __init acpi_boot_init(void)
acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
+ if (!acpi_noirq)
+ x86_init.pci.init = pci_acpi_init;
+
return 0;
}
diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c
index 98c4665f251c..be5c4fd47778 100644
--- a/arch/x86/kernel/apic/numaq_32.c
+++ b/arch/x86/kernel/apic/numaq_32.c
@@ -277,6 +277,7 @@ static __init void early_check_numaq(void)
x86_init.mpparse.mpc_oem_pci_bus = mpc_oem_pci_bus;
x86_init.mpparse.mpc_oem_bus_info = mpc_oem_bus_info;
x86_init.timers.tsc_pre_init = numaq_tsc_init;
+ x86_init.pci.init = pci_numaq_init;
}
}
diff --git a/arch/x86/kernel/visws_quirks.c b/arch/x86/kernel/visws_quirks.c
index 34a279a7471d..843e9d30a1e3 100644
--- a/arch/x86/kernel/visws_quirks.c
+++ b/arch/x86/kernel/visws_quirks.c
@@ -49,11 +49,6 @@ extern int no_broadcast;
char visws_board_type = -1;
char visws_board_rev = -1;
-int is_visws_box(void)
-{
- return visws_board_type >= 0;
-}
-
static void __init visws_time_init(void)
{
printk(KERN_INFO "Starting Cobalt Timer system clock\n");
@@ -242,6 +237,7 @@ void __init visws_early_detect(void)
x86_init.irqs.pre_vector_init = visws_pre_intr_init;
x86_init.irqs.trap_init = visws_trap_init;
x86_init.timers.timer_init = visws_time_init;
+ x86_init.pci.init = pci_visws_init;
/*
* Install reboot quirks:
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index ccd179dec36e..81faa6d67d69 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -7,6 +7,7 @@
#include <asm/bios_ebda.h>
#include <asm/paravirt.h>
+#include <asm/pci_x86.h>
#include <asm/mpspec.h>
#include <asm/setup.h>
#include <asm/apic.h>
@@ -70,6 +71,10 @@ struct x86_init_ops x86_init __initdata = {
.iommu = {
.iommu_init = iommu_init_noop,
},
+
+ .pci = {
+ .init = x86_default_pci_init,
+ },
};
struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {