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[PATCH] powerpc: clean up iSeries PCI probe 

Only scan the host bridges and then use the existing pci_devs_phb_init()
routine.

Also fix typo in setup of reg property.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Stephen Rothwell 2006-05-19 16:54:42 +10:00 committed by Paul Mackerras
parent efbd386967
commit 095eed4f8d
3 changed files with 22 additions and 30 deletions
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6
arch/powerpc/kernel/pci_dn.c
View File

@ -31,6 +31,7 @@
#include <asm/pci-bridge.h>
#include <asm/pSeries_reconfig.h>
#include <asm/ppc-pci.h>
#include <asm/firmware.h>
/*
* Traverse_func that inits the PCI fields of the device node.
@ -59,6 +60,11 @@ static void * __devinit update_dn_pci_info(struct device_node *dn, void *data)
pdn->busno = (regs[0] >> 16) & 0xff;
pdn->devfn = (regs[0] >> 8) & 0xff;
}
if (firmware_has_feature(FW_FEATURE_ISERIES)) {
u32 *busp = (u32 *)get_property(dn, "linux,subbus", NULL);
if (busp)
pdn->bussubno = *busp;
}
pdn->pci_ext_config_space = (type && *type == 1);
return NULL;

44
arch/powerpc/platforms/iseries/pci.c
View File

@ -166,13 +166,21 @@ static void pci_Log_Error(char *Error_Text, int Bus, int SubBus,
void iSeries_pcibios_init(void)
{
struct pci_controller *phb;
struct device_node *node;
struct device_node *dn;
struct device_node *root = of_find_node_by_path("/");
struct device_node *node = NULL;
for_each_node_by_type(node, "pci") {
if (root == NULL) {
printk(KERN_CRIT "iSeries_pcibios_init: can't find root "
"of device tree\n");
return;
}
while ((node = of_get_next_child(root, node)) != NULL) {
HvBusNumber bus;
u32 *busp;
if ((node->type == NULL) || (strcmp(node->type, "pci") != 0))
continue;
busp = (u32 *)get_property(node, "bus-range", NULL);
if (busp == NULL)
continue;
@ -186,33 +194,11 @@ void iSeries_pcibios_init(void)
phb->first_busno = bus;
phb->last_busno = bus;
phb->ops = &iSeries_pci_ops;
/* Find and connect the devices. */
for (dn = NULL; (dn = of_get_next_child(node, dn)) != NULL;) {
struct pci_dn *pdn;
u32 *reg;
reg = (u32 *)get_property(dn, "reg", NULL);
if (reg == NULL) {
printk(KERN_DEBUG "no reg property!\n");
continue;
}
busp = (u32 *)get_property(dn, "linux,subbus", NULL);
if (busp == NULL) {
printk(KERN_DEBUG "no subbus property!\n");
continue;
}
pdn = kzalloc(sizeof(*pdn), GFP_KERNEL);
if (pdn == NULL)
return;
dn->data = pdn;
pdn->node = dn;
pdn->busno = bus;
pdn->devfn = (reg[0] >> 8) & 0xff;
pdn->bussubno = *busp;
}
}
of_node_put(root);
pci_devs_phb_init();
}
/*

2
arch/powerpc/platforms/iseries/setup.c
View File

@ -1073,7 +1073,7 @@ static void scan_bridge_slot(struct iseries_flat_dt *dt, HvBusNumber bus,
snprintf(buf, sizeof(buf), "pci@%x,%d",
PCI_SLOT(devfn), function);
dt_start_node(dt, buf);
reg[0] = (bus << 18) | (devfn << 8);
reg[0] = (bus << 16) | (devfn << 8);
reg[1] = 0;
reg[2] = 0;
reg[3] = 0;