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PCI/x86: fix up PCI stuff so that PCI_GOANY supports OLPC 

Previously, one would have to specifically choose CONFIG_OLPC and
CONFIG_PCI_GOOLPC in order to enable PCI_OLPC.  That doesn't really work
for distro kernels, so this patch allows one to choose CONFIG_OLPC and
CONFIG_PCI_GOANY in order to build in OLPC support in a generic kernel (as
requested by Robert Millan).

This also moves GOOLPC before GOANY in the menuconfig list.

Finally, make pci_access_init return early if we detect OLPC hardware.
There's no need to continue probing stuff, and pci_pcbios_init
specifically trashes our settings (we didn't run into that before because
PCI_GOANY wasn't supported).

Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
hifive-unleashed-5.1
Andres Salomon 2008-06-05 14:14:41 -07:00 committed by Jesse Barnes
parent 53c8ba9540
commit 2bdd1b031b
4 changed files with 11 additions and 10 deletions
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11
arch/x86/Kconfig
View File

@ -1508,13 +1508,13 @@ config PCI_GOMMCONFIG
config PCI_GODIRECT
bool "Direct"
config PCI_GOANY
bool "Any"
config PCI_GOOLPC
bool "OLPC"
depends on OLPC
config PCI_GOANY
bool "Any"
endchoice
config PCI_BIOS
@ -1531,9 +1531,8 @@ config PCI_MMCONFIG
depends on X86_32 && PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
config PCI_OLPC
bool
depends on PCI && PCI_GOOLPC
default y
def_bool y
depends on PCI && OLPC && (PCI_GOOLPC || PCI_GOANY)
config PCI_DOMAINS
def_bool y

3
arch/x86/pci/init.c
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@ -15,7 +15,8 @@ static __init int pci_access_init(void)
pci_mmcfg_early_init();
#ifdef CONFIG_PCI_OLPC
pci_olpc_init();
if (!pci_olpc_init())
return 0; /* skip additional checks if it's an XO */
#endif
#ifdef CONFIG_PCI_BIOS
pci_pcbios_init();

5
arch/x86/pci/olpc.c
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@ -302,12 +302,13 @@ static struct pci_raw_ops pci_olpc_conf = {
.write = pci_olpc_write,
};
void __init pci_olpc_init(void)
int __init pci_olpc_init(void)
{
if (!machine_is_olpc() || olpc_has_vsa())
return;
return -ENODEV;
printk(KERN_INFO "PCI: Using configuration type OLPC\n");
raw_pci_ops = &pci_olpc_conf;
is_lx = is_geode_lx();
return 0;
}

2
arch/x86/pci/pci.h
View File

@ -101,7 +101,7 @@ extern struct pci_raw_ops pci_direct_conf1;
extern int pci_direct_probe(void);
extern void pci_direct_init(int type);
extern void pci_pcbios_init(void);
extern void pci_olpc_init(void);
extern int pci_olpc_init(void);
/* pci-mmconfig.c */