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[PATCH] i386/x86-64: PCI: split probing and initialization of type 1 config space access

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First probe if type1/2 accesses work, but then only initialize them at the end.

This is useful for a later patch that needs this information inbetween.

Signed-off-by: Andi Kleen <ak@suse.de>
This commit is contained in:
Andi Kleen 2006-09-26 10:52:40 +02:00 committed by Andi Kleen
parent a15da49deb
commit 5e544d618f
5 changed files with 29 additions and 15 deletions
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25
arch/i386/pci/direct.c
View file

@ -254,7 +254,16 @@ static int __init pci_check_type2(void)
return works;
}
void __init pci_direct_init(void)
void __init pci_direct_init(int type)
{
printk(KERN_INFO "PCI: Using configuration type %d\n", type);
if (type == 1)
raw_pci_ops = &pci_direct_conf1;
else
raw_pci_ops = &pci_direct_conf2;
}
int __init pci_direct_probe(void)
{
struct resource *region, *region2;
@ -264,19 +273,16 @@ void __init pci_direct_init(void)
if (!region)
goto type2;
if (pci_check_type1()) {
printk(KERN_INFO "PCI: Using configuration type 1\n");
raw_pci_ops = &pci_direct_conf1;
return;
}
if (pci_check_type1())
return 1;
release_resource(region);
type2:
if ((pci_probe & PCI_PROBE_CONF2) == 0)
return;
return 0;
region = request_region(0xCF8, 4, "PCI conf2");
if (!region)
return;
return 0;
region2 = request_region(0xC000, 0x1000, "PCI conf2");
if (!region2)
goto fail2;
@ -284,10 +290,11 @@ void __init pci_direct_init(void)
if (pci_check_type2()) {
printk(KERN_INFO "PCI: Using configuration type 2\n");
raw_pci_ops = &pci_direct_conf2;
return;
return 2;
}
release_resource(region2);
fail2:
release_resource(region);
return 0;
}

9
arch/i386/pci/init.c
View file

@ -6,8 +6,13 @@
in the right sequence from here. */
static __init int pci_access_init(void)
{
int type = 0;
#ifdef CONFIG_PCI_DIRECT
type = pci_direct_probe();
#endif
#ifdef CONFIG_PCI_MMCONFIG
pci_mmcfg_init();
pci_mmcfg_init(type);
#endif
if (raw_pci_ops)
return 0;
@ -21,7 +26,7 @@ static __init int pci_access_init(void)
* fails.
*/
#ifdef CONFIG_PCI_DIRECT
pci_direct_init();
pci_direct_init(type);
#endif
return 0;
}

2
arch/i386/pci/mmconfig.c
View file

@ -187,7 +187,7 @@ static __init void unreachable_devices(void)
}
}
void __init pci_mmcfg_init(void)
void __init pci_mmcfg_init(int type)
{
if ((pci_probe & PCI_PROBE_MMCONF) == 0)
return;

6
arch/i386/pci/pci.h
View file

@ -81,7 +81,9 @@ extern int pci_conf1_write(unsigned int seg, unsigned int bus,
extern int pci_conf1_read(unsigned int seg, unsigned int bus,
unsigned int devfn, int reg, int len, u32 *value);
extern void pci_direct_init(void);
extern int pci_direct_probe(void);
extern void pci_direct_init(int type);
extern void pci_pcbios_init(void);
extern void pci_mmcfg_init(void);
extern void pci_mmcfg_init(int type);
extern void pcibios_sort(void);

2
arch/x86_64/pci/mmconfig.c
View file

@ -163,7 +163,7 @@ static __init void unreachable_devices(void)
}
}
void __init pci_mmcfg_init(void)
void __init pci_mmcfg_init(int type)
{
int i;