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https://github.com/fail0verflow/switch-coreboot.git
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0fb2a8f081
phases. One benefit of this is that it makes the call chain easier to follow. device/device.c: Remove references to have_resources. Remove read_resources from compute allocate resources. Split compute_allocate_resources into two 1. compute_resource_needs A. Traverse the tree depth first B. Sum resources C. Adjust limits and bases D. Update bridge resources sizes 2. assign_resource_values A. Traverse the tree breadth first B. Assign resource values device/device_util.c: Remove references to have_resources. device/pci_device.c: Remove saved values stubs (they're not needed now.) 1. Sizing function restores values Fix 64-bit flag masking. Add an error message for an invalid value. Update pci_record_bridge_resource: 1. remove compute_allocate_resource call 2. remove pci_set_resource call Update pci_bus_read_resources to read children's too. Update pci_set_resource: 1. change logic for setting zero-size resources A. Set range to [limit->limit-2^gran] (Could have been any range with base > limit) 2. remove compute_allocate_resource calls 3. Change phase4_assign_resources ->phase4_set_resources device/pci_ops.c: Change an error message to be more helpful. device/root_device.c: Remove code for read_resources and set resources. Add a .id to the ops. include/device/device.h: Remove have_resources. Comment out assign_resources. I think we could comment out more here. Add debugging function prototypes. Change phase4_assign_resources to phase4_set_resources. include/device/resource.h Add a IORESOURCE_BRIDGE flag. device/cardbus_device.c Remove compute_allocate_resource call. Use probe_resource (doesn't die) instead of find_resource. Signed-off-by: Myles Watson <mylesgw@gmail.com> Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://coreboot.org/repository/coreboot-v3@1089 f3766cd6-281f-0410-b1cd-43a5c92072e9
101 lines
3 KiB
C
101 lines
3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2004 Linux Networx
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* (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <console.h>
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#include <device/device.h>
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#include <pciconf.h>
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#include <device/pci.h>
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#include <device/pci_ids.h>
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#include <device/pci_ops.h>
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#include <types.h>
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/**
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* Walk up the tree from the current dev, in an attempt to find a
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* bus that has ops_pci_bus set. The assumption here being that if it
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* has ops_pci_bus set, then it can do bus operations.
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*/
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static struct bus *get_pbus(struct device *dev)
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{
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struct bus *pbus = dev->bus;
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while (pbus && pbus->dev && !ops_pci_bus(pbus)) {
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if (pbus->dev == dev) {
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printk(BIOS_EMERG, "Loop: %s->bus->dev\n", dev->dtsname);
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printk(BIOS_EMERG, "To fix this, set ops_pci_bus in dts\n");
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die("loop due to insufficient dts");
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}
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pbus = pbus->dev->bus;
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}
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if (!pbus || !pbus->dev || !pbus->dev->ops
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|| !pbus->dev->ops->ops_pci_bus) {
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printk(BIOS_ALERT, "%s: %s(%s) Cannot find PCI bus operations",
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__func__, dev->dtsname, dev_path(dev));
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die("");
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}
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return pbus;
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}
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u8 pci_read_config8(struct device *dev, unsigned int where)
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{
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struct bus *pbus = get_pbus(dev);
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return ops_pci_bus(pbus)->read8(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where);
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}
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u16 pci_read_config16(struct device *dev, unsigned int where)
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{
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struct bus *pbus = get_pbus(dev);
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return ops_pci_bus(pbus)->read16(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where);
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}
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u32 pci_read_config32(struct device *dev, unsigned int where)
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{
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struct bus *pbus = get_pbus(dev);
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return ops_pci_bus(pbus)->read32(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where);
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}
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void pci_write_config8(struct device *dev, unsigned int where, u8 val)
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{
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struct bus *pbus = get_pbus(dev);
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ops_pci_bus(pbus)->write8(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where, val);
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}
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void pci_write_config16(struct device *dev, unsigned int where, u16 val)
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{
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struct bus *pbus = get_pbus(dev);
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ops_pci_bus(pbus)->write16(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where, val);
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}
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void pci_write_config32(struct device *dev, unsigned int where, u32 val)
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{
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struct bus *pbus = get_pbus(dev);
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ops_pci_bus(pbus)->write32(PCI_BDEVFN(dev->bus->secondary,
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dev->path.pci.devfn),
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where, val);
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}
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