Michael Brown
71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
#ifdef CONFIG_PCI
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2, or (at
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* your option) any later version.
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*/
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#include "etherboot.h"
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#include "nic.h"
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#include "pci.h"
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void pci_enumerate(void)
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{
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const struct pci_driver *driver;
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for(driver = pci_drivers; driver < pci_drivers_end; driver++) {
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printf("%s ", driver->name);
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}
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}
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int pci_probe(struct dev *dev, const char *type_name)
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{
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/*
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* NIC probing is in pci device order, followed by the
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* link order of the drivers. A driver that matches
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* on vendor and device id will supersede a driver
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* that matches on pci class.
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*
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* If you want to probe for another device behind the same pci
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* device just increment index. And the previous probe call
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* will be repeated.
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*/
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struct pci_probe_state *state = &dev->state.pci;
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printf("Probing pci %s...\n", type_name);
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if (dev->how_probe == PROBE_FIRST) {
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state->advance = 1;
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state->dev.driver = 0;
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state->dev.bus = 0;
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state->dev.devfn = 0;
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dev->index = -1;
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}
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for(;;) {
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if ((dev->how_probe != PROBE_AWAKE) && state->advance) {
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find_pci(dev->type, &state->dev);
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dev->index = -1;
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}
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state->advance = 1;
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if (state->dev.driver == 0)
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break;
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if (dev->how_probe != PROBE_AWAKE) {
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dev->type_index++;
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}
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dev->devid.bus_type = PCI_BUS_TYPE;
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dev->devid.vendor_id = htons(state->dev.vendor);
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dev->devid.device_id = htons(state->dev.dev_id);
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/* FIXME how do I handle dev->index + PROBE_AGAIN?? */
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printf("[%s]", state->dev.name);
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if (state->dev.driver->probe(dev, &state->dev)) {
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state->advance = (dev->index == -1);
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return PROBE_WORKED;
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}
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putchar('\n');
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}
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return PROBE_FAILED;
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}
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#endif
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