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PCI subsystem: Remove AGP bridge type 

There is no auto-detection for AGP type and we have no hardware that
selects this. Furthermore, we treat AGP bridges just like PCI bridges,
there is no optimisation for higher bandwidth.

Change-Id: I4fe87c83411643cb9b8d3216f2af07bf098174d3
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8367
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Kyösti Mälkki 2015-02-02 15:56:27 +02:00
parent b474abee84
commit 754fac4346
5 changed files with 0 additions and 99 deletions
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5
src/device/Kconfig
View File

@ -225,11 +225,6 @@ config PCIEXP_PLUGIN_SUPPORT
depends on PCI
default y
config AGP_PLUGIN_SUPPORT
bool
depends on PCI
default y
config CARDBUS_PLUGIN_SUPPORT
bool
depends on PCI

1
src/device/Makefile.inc
View File

@ -6,7 +6,6 @@ ramstage-$(CONFIG_PCI) += pci_device.c
ramstage-$(CONFIG_HYPERTRANSPORT_PLUGIN_SUPPORT) += hypertransport.c
ramstage-$(CONFIG_PCIX_PLUGIN_SUPPORT) += pcix_device.c
ramstage-$(CONFIG_PCIEXP_PLUGIN_SUPPORT) += pciexp_device.c
ramstage-$(CONFIG_AGP_PLUGIN_SUPPORT) += agp_device.c
ramstage-$(CONFIG_CARDBUS_PLUGIN_SUPPORT) += cardbus_device.c
ramstage-$(CONFIG_AZALIA_PLUGIN_SUPPORT) += azalia_device.c
ramstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += pnp_device.c

75
src/device/agp_device.c
View File

@ -1,75 +0,0 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2005 Linux Networx
* (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/agp.h>
static void agp_tune_dev(device_t dev)
{
unsigned int cap;
cap = pci_find_capability(dev, PCI_CAP_ID_AGP);
if (!cap)
return;
/* The OS is responsible for AGP tuning so do nothing here. */
}
unsigned int agp_scan_bus(struct bus *bus, unsigned int min_devfn,
unsigned int max_devfn, unsigned int max)
{
device_t child;
max = pci_scan_bus(bus, min_devfn, max_devfn, max);
for (child = bus->children; child; child = child->sibling) {
if ((child->path.pci.devfn < min_devfn) ||
(child->path.pci.devfn > max_devfn)) {
continue;
}
agp_tune_dev(child);
}
return max;
}
unsigned int agp_scan_bridge(device_t dev, unsigned int max)
{
return do_pci_scan_bridge(dev, max, agp_scan_bus);
}
/** Default device operations for AGP bridges. */
static struct pci_operations agp_bus_ops_pci = {
.set_subsystem = 0,
};
struct device_operations default_agp_ops_bus = {
.read_resources = pci_bus_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_bus_enable_resources,
.init = 0,
.scan_bus = agp_scan_bridge,
.enable = 0,
.reset_bus = pci_bus_reset,
.ops_pci = &agp_bus_ops_pci,
};

4
src/device/pci_device.c
View File

@ -32,7 +32,6 @@
#include <stdint.h>
#include <string.h>
#include <delay.h>
#include <device/agp.h>
#include <device/cardbus.h>
#include <device/device.h>
#include <device/pci.h>
@ -771,9 +770,6 @@ static struct device_operations *get_pci_bridge_ops(device_t dev)
return &default_pcix_ops_bus;
}
#endif
#if CONFIG_AGP_PLUGIN_SUPPORT
/* How do I detect a PCI to AGP bridge? */
#endif
#if CONFIG_HYPERTRANSPORT_PLUGIN_SUPPORT
unsigned int htpos = 0;
while ((htpos = pci_find_next_capability(dev, PCI_CAP_ID_HT, htpos))) {

14
src/include/device/agp.h
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@ -1,14 +0,0 @@
/* (c) 2005 Linux Networx GPL see COPYING for details */
#ifndef DEVICE_AGP_H
#define DEVICE_AGP_H
#include <device/device.h>
unsigned int agp_scan_bus(struct bus *bus,
unsigned min_devfn, unsigned max_devfn, unsigned int max);
unsigned int agp_scan_bridge(device_t dev, unsigned int max);
extern struct device_operations default_agp_ops_bus;
#endif /* DEVICE_AGP_H */