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Now obsolete. :)
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Michael Brown
parent
0effbefe6f
commit
daad093c40
@ -1,195 +0,0 @@
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#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 "pci.h"
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/*#define DEBUG 1*/
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static void scan_drivers(
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int type,
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uint32_t class, uint16_t vendor, uint16_t device,
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const struct pci_driver *last_driver, struct pci_device *dev)
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{
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const struct pci_driver *skip_driver = last_driver;
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/* Assume there is only one match of the correct type */
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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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int i;
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if (driver->type != type)
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continue;
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if (skip_driver) {
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if (skip_driver == driver)
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skip_driver = 0;
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continue;
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}
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for(i = 0; i < driver->id_count; i++) {
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if ((vendor == driver->ids[i].vendor) &&
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(device == driver->ids[i].dev_id)) {
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dev->driver = driver;
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dev->name = driver->ids[i].name;
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goto out;
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}
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}
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}
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if (!class) {
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goto out;
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}
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for(driver = pci_drivers; driver < pci_drivers_end; driver++) {
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if (driver->type != type)
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continue;
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if (skip_driver) {
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if (skip_driver == driver)
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skip_driver = 0;
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continue;
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}
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if (last_driver == driver)
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continue;
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if ((class >> 8) == driver->class) {
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dev->driver = driver;
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dev->name = driver->name;
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goto out;
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}
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}
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out:
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return;
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}
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void scan_pci_bus(int type, struct pci_device *dev)
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{
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unsigned int first_bus, first_devfn;
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const struct pci_driver *first_driver;
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unsigned int devfn, bus, buses;
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unsigned char hdr_type = 0;
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uint32_t class;
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uint16_t vendor, device;
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uint32_t l, membase, ioaddr, romaddr;
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uint8_t irq;
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int reg;
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first_bus = 0;
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first_devfn = 0;
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first_driver = 0;
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if (dev->driver || dev->use_specified) {
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first_driver = dev->driver;
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first_bus = dev->bus;
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first_devfn = dev->devfn;
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/* Re read the header type on a restart */
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pcibios_read_config_byte(first_bus, first_devfn & ~0x7,
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PCI_HEADER_TYPE, &hdr_type);
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dev->driver = 0;
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dev->bus = 0;
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dev->devfn = 0;
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}
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/* Scan all PCI buses, until we find our card.
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* We could be smart only scan the required buses but that
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* is error prone, and tricky.
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* By scanning all possible pci buses in order we should find
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* our card eventually.
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*/
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buses=256;
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for (bus = first_bus; bus < buses; ++bus) {
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for (devfn = first_devfn; devfn < 0xff; ++devfn, first_driver = 0) {
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if (PCI_FUNC (devfn) == 0)
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pcibios_read_config_byte(bus, devfn, PCI_HEADER_TYPE, &hdr_type);
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else if (!(hdr_type & 0x80)) /* not a multi-function device */
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continue;
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pcibios_read_config_dword(bus, devfn, PCI_VENDOR_ID, &l);
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/* some broken boards return 0 if a slot is empty: */
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if (l == 0xffffffff || l == 0x00000000) {
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continue;
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}
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vendor = l & 0xffff;
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device = (l >> 16) & 0xffff;
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pcibios_read_config_dword(bus, devfn, PCI_REVISION, &l);
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class = (l >> 8) & 0xffffff;
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#if DEBUG
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{
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int i;
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printf("%hhx:%hhx.%hhx [%hX/%hX] Class %hX\n",
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bus, PCI_SLOT(devfn), PCI_FUNC(devfn),
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vendor, device, class >> 8);
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#if DEBUG > 1
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for(i = 0; i < 256; i++) {
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unsigned char byte;
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if ((i & 0xf) == 0) {
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printf("%hhx: ", i);
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}
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pcibios_read_config_byte(bus, devfn, i, &byte);
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printf("%hhx ", byte);
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if ((i & 0xf) == 0xf) {
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printf("\n");
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}
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}
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#endif
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}
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#endif
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scan_drivers(type, class, vendor, device, first_driver, dev);
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if (!dev->driver)
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continue;
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dev->devfn = devfn;
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dev->bus = bus;
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dev->class = class;
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dev->vendor = vendor;
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dev->dev_id = device;
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/* Get the ROM base address */
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pcibios_read_config_dword(bus, devfn,
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PCI_ROM_ADDRESS, &romaddr);
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romaddr >>= 10;
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dev->romaddr = romaddr;
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/* Get the ``membase'' */
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pcibios_read_config_dword(bus, devfn,
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PCI_BASE_ADDRESS_1, &membase);
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dev->membase = membase;
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/* Get the ``ioaddr'' */
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for (reg = PCI_BASE_ADDRESS_0; reg <= PCI_BASE_ADDRESS_5; reg += 4) {
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pcibios_read_config_dword(bus, devfn, reg, &ioaddr);
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if ((ioaddr & PCI_BASE_ADDRESS_IO_MASK) == 0 || (ioaddr & PCI_BASE_ADDRESS_SPACE_IO) == 0)
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continue;
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/* Strip the I/O address out of the returned value */
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ioaddr &= PCI_BASE_ADDRESS_IO_MASK;
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/* Take the first one or the one that matches in boot ROM address */
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dev->ioaddr = ioaddr;
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}
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/* Get the irq */
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pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &irq);
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if (irq) {
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pci_read_config_byte(dev, PCI_INTERRUPT_LINE,
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&irq);
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}
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dev->irq = irq;
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#if DEBUG > 2
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printf("Found %s ROM address %#hx\n",
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dev->name, romaddr);
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#endif
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return;
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}
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first_devfn = 0;
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}
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first_bus = 0;
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}
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#endif /* CONFIG_PCI */
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