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[SPARC64]: Use in-kernel OBP device tree for PCI controller probing.

Browse source 
It can be pushed even further down, but this is a first step.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-06-21 18:18:47 -07:00
parent aaf7cec276
commit e87dc35020
7 changed files with 311 additions and 384 deletions
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53
arch/sparc64/kernel/pci.c
View file

@ -22,6 +22,7 @@
#include <asm/irq.h>
#include <asm/ebus.h>
#include <asm/isa.h>
#include <asm/prom.h>
unsigned long pci_memspace_mask = 0xffffffffUL;
@ -177,16 +178,16 @@ void pci_config_write32(u32 *addr, u32 val)
}
/* Probe for all PCI controllers in the system. */
extern void sabre_init(int, char *);
extern void psycho_init(int, char *);
extern void schizo_init(int, char *);
extern void schizo_plus_init(int, char *);
extern void tomatillo_init(int, char *);
extern void sun4v_pci_init(int, char *);
extern void sabre_init(struct device_node *, const char *);
extern void psycho_init(struct device_node *, const char *);
extern void schizo_init(struct device_node *, const char *);
extern void schizo_plus_init(struct device_node *, const char *);
extern void tomatillo_init(struct device_node *, const char *);
extern void sun4v_pci_init(struct device_node *, const char *);
static struct {
char *model_name;
void (*init)(int, char *);
void (*init)(struct device_node *, const char *);
} pci_controller_table[] __initdata = {
{ "SUNW,sabre", sabre_init },
{ "pci108e,a000", sabre_init },
@ -204,7 +205,7 @@ static struct {
#define PCI_NUM_CONTROLLER_TYPES (sizeof(pci_controller_table) / \
sizeof(pci_controller_table[0]))
static int __init pci_controller_init(char *model_name, int namelen, int node)
static int __init pci_controller_init(const char *model_name, int namelen, struct device_node *dp)
{
int i;
@ -212,18 +213,15 @@ static int __init pci_controller_init(char *model_name, int namelen, int node)
if (!strncmp(model_name,
pci_controller_table[i].model_name,
namelen)) {
pci_controller_table[i].init(node, model_name);
pci_controller_table[i].init(dp, model_name);
return 1;
}
}
printk("PCI: Warning unknown controller, model name [%s]\n",
model_name);
printk("PCI: Ignoring controller...\n");
return 0;
}
static int __init pci_is_controller(char *model_name, int namelen, int node)
static int __init pci_is_controller(const char *model_name, int namelen, struct device_node *dp)
{
int i;
@ -237,36 +235,35 @@ static int __init pci_is_controller(char *model_name, int namelen, int node)
return 0;
}
static int __init pci_controller_scan(int (*handler)(char *, int, int))
static int __init pci_controller_scan(int (*handler)(const char *, int, struct device_node *))
{
char namebuf[64];
int node;
struct device_node *dp;
int count = 0;
node = prom_getchild(prom_root_node);
while ((node = prom_searchsiblings(node, "pci")) != 0) {
for_each_node_by_name(dp, "pci") {
struct property *prop;
int len;
if ((len = prom_getproperty(node, "model", namebuf, sizeof(namebuf))) > 0 ||
(len = prom_getproperty(node, "compatible", namebuf, sizeof(namebuf))) > 0) {
prop = of_find_property(dp, "model", &len);
if (!prop)
prop = of_find_property(dp, "compatible", &len);
if (prop) {
const char *model = prop->value;
int item_len = 0;
/* Our value may be a multi-valued string in the
* case of some compatible properties. For sanity,
* only try the first one. */
while (namebuf[item_len] && len) {
* only try the first one.
*/
while (model[item_len] && len) {
len--;
item_len++;
}
if (handler(namebuf, item_len, node))
if (handler(model, item_len, dp))
count++;
}
node = prom_getsibling(node);
if (!node)
break;
}
return count;