Here's what I had to do. First, though, let me say: the new linuxbios
architecture, while hard to get the hang of (learning curve) is very
powerful.
You can have a mainboard-specific pci scan function, and that's what I
needed. I may put this as a generic thing into the pci device code.
See below for how it works. Basically, for your mainboard, you provide a
function that scans the root of the "mainboard PCI" tree.
ron
Here goes
================
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <arch/io.h>
#include <device/chip.h>
#include "chip.h"
static int
mainboard_scan_bus(device_t root, int maxbus)
{
int retval;
printk_spew("%s: root %p maxbus %d\n", __FUNCTION__, root, maxbus);
retval = pci_scan_bus(root->bus, 0, 0xff, maxbus);
printk_spew("DONE %s: return %d\n", __FUNCTION__, maxbus);
return maxbus;
}
static struct device_operations mainboard_operations = {
.read_resources = root_dev_read_resources,
.set_resources = root_dev_set_resources,
.enable_resources = enable_childrens_resources,
.init = 0,
.scan_bus = mainboard_scan_bus,
.enable = 0,
};
static void enumerate(struct chip *chip)
{
struct chip *child;
dev_root.ops = &mainboard_operations;
chip->dev = &dev_root;
chip->bus = 0;
for(child = chip->children; child; child = child->next) {
child->bus = &dev_root.link[0];
}
}
struct chip_control mainboard_via_epia_control = {
.enumerate = enumerate,
.name = "VIA EPIA mainboard ",
};
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