e4d7abc0d4
The devicetree data structures have been available in more than just ramstage and romstage. In order to provide clearer and consistent semantics two new macros are provided: 1. DEVTREE_EARLY which is true when !ENV_RAMSTAGE 2. DEVTREE_CONST as a replacment for ROMSTAGE_CONST The ROMSTAGE_CONST attribute is used in the source code to mark the devicetree data structures as const in early stages even though it's not just romstage. Therefore, rename the attribute to DEVTREE_CONST as that's the actual usage. The only place where the usage was not devicetree related is console_loglevel, but the same name was used for consistency. Any stage that is not ramstage has the const C attribute applied when DEVTREE_CONST is used. Change-Id: Ibd51c2628dc8f68e0896974f7e4e7c8588d333ed Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19333 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2003-2004 Linux Networx
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* (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
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* Copyright (C) 2003 Greg Watson <jarrah@users.sourceforge.net>
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* Copyright (C) 2004 Li-Ta Lo <ollie@lanl.gov>
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* Copyright (C) 2005-2006 Tyan
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* (Written by Yinghai Lu <yhlu@tyan.com> for Tyan)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <device/device.h>
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#include <device/path.h>
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#include <device/pci.h>
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#include <device/resource.h>
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/** Linked list of ALL devices */
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DEVTREE_CONST struct device * DEVTREE_CONST all_devices = &dev_root;
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/**
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* Given a PCI bus and a devfn number, find the device structure.
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*
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* @param bus The bus number.
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* @param devfn A device/function number.
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* @return Pointer to the device structure (if found), 0 otherwise.
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*/
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DEVTREE_CONST struct device *dev_find_slot(unsigned int bus,
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unsigned int devfn)
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{
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DEVTREE_CONST struct device *dev, *result;
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result = 0;
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for (dev = all_devices; dev; dev = dev->next) {
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if ((dev->path.type == DEVICE_PATH_PCI) &&
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(dev->bus->secondary == bus) &&
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(dev->path.pci.devfn == devfn)) {
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result = dev;
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break;
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}
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}
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return result;
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}
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/**
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* Given a device pointer, find the next PCI device.
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*
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* @param previous_dev A pointer to a PCI device structure.
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* @return Pointer to the next device structure (if found), 0 otherwise.
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*/
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DEVTREE_CONST struct device *dev_find_next_pci_device(
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DEVTREE_CONST struct device *previous_dev)
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{
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DEVTREE_CONST struct device *dev, *result;
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if (previous_dev == NULL)
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previous_dev = all_devices;
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result = 0;
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for (dev = previous_dev->next; dev; dev = dev->next) {
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if (dev->path.type == DEVICE_PATH_PCI) {
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result = dev;
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break;
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}
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}
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return result;
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}
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/**
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* Given an SMBus bus and a device number, find the device structure.
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*
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* @param bus The bus number.
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* @param addr A device number.
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* @return Pointer to the device structure (if found), 0 otherwise.
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*/
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DEVTREE_CONST struct device *dev_find_slot_on_smbus(unsigned int bus,
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unsigned int addr)
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{
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DEVTREE_CONST struct device *dev, *result;
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result = 0;
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for (dev = all_devices; dev; dev = dev->next) {
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if ((dev->path.type == DEVICE_PATH_I2C) &&
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(dev->bus->secondary == bus) &&
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(dev->path.i2c.device == addr)) {
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result = dev;
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break;
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}
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}
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return result;
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}
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/**
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* Given a PnP port and a device number, find the device structure.
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*
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* @param port The I/O port.
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* @param device Logical device number.
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* @return Pointer to the device structure (if found), 0 otherwise.
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*/
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DEVTREE_CONST struct device *dev_find_slot_pnp(u16 port, u16 device)
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{
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DEVTREE_CONST struct device *dev;
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for (dev = all_devices; dev; dev = dev->next) {
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if ((dev->path.type == DEVICE_PATH_PNP) &&
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(dev->path.pnp.port == port) &&
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(dev->path.pnp.device == device)) {
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return dev;
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}
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}
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return 0;
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}
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