2011-07-03 15:00:09 +02:00
|
|
|
/*
|
|
|
|
* Standard PCI Bridge Device
|
|
|
|
*
|
|
|
|
* Copyright (c) 2011 Red Hat Inc. Author: Michael S. Tsirkin <mst@redhat.com>
|
|
|
|
*
|
|
|
|
* http://www.pcisig.com/specifications/conventional/pci_to_pci_bridge_architecture/
|
|
|
|
*
|
|
|
|
* 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; either version 2 of the License, or
|
|
|
|
* (at your option) any later version.
|
|
|
|
*
|
|
|
|
* 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
|
2016-01-26 19:17:15 +01:00
|
|
|
#include "qemu/osdep.h"
|
include/qemu/osdep.h: Don't include qapi/error.h
Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef. Since then, we've moved to include qemu/osdep.h
everywhere. Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h. That's in excess of
100KiB of crap most .c files don't actually need.
Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h. Include qapi/error.h in .c files that need it and don't
get it now. Include qapi-types.h in qom/object.h for uint16List.
Update scripts/clean-includes accordingly. Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h
comment quoted above similarly.
This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third. Unfortunately, the number depending on
qapi-types.h shrinks only a little. More work is needed for that one.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
[Fix compilation without the spice devel packages. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-14 09:01:28 +01:00
|
|
|
#include "qapi/error.h"
|
2013-02-04 15:40:22 +01:00
|
|
|
#include "hw/pci/pci_bridge.h"
|
|
|
|
#include "hw/pci/pci_ids.h"
|
|
|
|
#include "hw/pci/msi.h"
|
|
|
|
#include "hw/pci/shpc.h"
|
|
|
|
#include "hw/pci/slotid_cap.h"
|
2012-12-17 18:19:49 +01:00
|
|
|
#include "exec/memory.h"
|
2013-02-04 15:40:22 +01:00
|
|
|
#include "hw/pci/pci_bus.h"
|
2014-02-05 16:36:50 +01:00
|
|
|
#include "hw/hotplug.h"
|
2011-07-03 15:00:09 +02:00
|
|
|
|
2015-06-18 12:17:29 +02:00
|
|
|
#define TYPE_PCI_BRIDGE_DEV "pci-bridge"
|
|
|
|
#define TYPE_PCI_BRIDGE_SEAT_DEV "pci-bridge-seat"
|
2013-07-12 19:16:46 +02:00
|
|
|
#define PCI_BRIDGE_DEV(obj) \
|
|
|
|
OBJECT_CHECK(PCIBridgeDev, (obj), TYPE_PCI_BRIDGE_DEV)
|
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
struct PCIBridgeDev {
|
2013-07-12 19:16:46 +02:00
|
|
|
/*< private >*/
|
|
|
|
PCIBridge parent_obj;
|
|
|
|
/*< public >*/
|
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
MemoryRegion bar;
|
|
|
|
uint8_t chassis_nr;
|
2016-06-20 08:13:38 +02:00
|
|
|
#define PCI_BRIDGE_DEV_F_SHPC_REQ 0
|
2011-07-03 15:00:09 +02:00
|
|
|
uint32_t flags;
|
2016-06-20 08:13:38 +02:00
|
|
|
|
|
|
|
OnOffAuto msi;
|
2011-07-03 15:00:09 +02:00
|
|
|
};
|
|
|
|
typedef struct PCIBridgeDev PCIBridgeDev;
|
|
|
|
|
|
|
|
static int pci_bridge_dev_initfn(PCIDevice *dev)
|
|
|
|
{
|
2013-07-11 17:13:43 +02:00
|
|
|
PCIBridge *br = PCI_BRIDGE(dev);
|
2013-07-12 19:16:46 +02:00
|
|
|
PCIBridgeDev *bridge_dev = PCI_BRIDGE_DEV(dev);
|
2012-07-04 06:39:27 +02:00
|
|
|
int err;
|
2016-06-20 08:13:39 +02:00
|
|
|
Error *local_err = NULL;
|
2012-07-04 06:39:27 +02:00
|
|
|
|
2016-01-15 03:23:32 +01:00
|
|
|
pci_bridge_initfn(dev, TYPE_PCI_BUS);
|
|
|
|
|
2015-06-19 04:40:13 +02:00
|
|
|
if (bridge_dev->flags & (1 << PCI_BRIDGE_DEV_F_SHPC_REQ)) {
|
|
|
|
dev->config[PCI_INTERRUPT_PIN] = 0x1;
|
|
|
|
memory_region_init(&bridge_dev->bar, OBJECT(dev), "shpc-bar",
|
|
|
|
shpc_bar_size(dev));
|
|
|
|
err = shpc_init(dev, &br->sec_bus, &bridge_dev->bar, 0);
|
|
|
|
if (err) {
|
|
|
|
goto shpc_error;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* MSI is not applicable without SHPC */
|
2016-06-20 08:13:38 +02:00
|
|
|
bridge_dev->msi = ON_OFF_AUTO_OFF;
|
2011-07-03 15:00:09 +02:00
|
|
|
}
|
2016-06-10 11:54:23 +02:00
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
err = slotid_cap_init(dev, 0, bridge_dev->chassis_nr, 0);
|
|
|
|
if (err) {
|
|
|
|
goto slotid_error;
|
|
|
|
}
|
2016-06-10 11:54:23 +02:00
|
|
|
|
2016-06-20 08:13:39 +02:00
|
|
|
if (bridge_dev->msi != ON_OFF_AUTO_OFF) {
|
|
|
|
/* it means SHPC exists, because MSI is needed by SHPC */
|
|
|
|
|
|
|
|
err = msi_init(dev, 0, 1, true, true, &local_err);
|
|
|
|
/* Any error other than -ENOTSUP(board's MSI support is broken)
|
|
|
|
* is a programming error */
|
|
|
|
assert(!err || err == -ENOTSUP);
|
|
|
|
if (err && bridge_dev->msi == ON_OFF_AUTO_ON) {
|
|
|
|
/* Can't satisfy user's explicit msi=on request, fail */
|
|
|
|
error_append_hint(&local_err, "You have to use msi=auto (default) "
|
|
|
|
"or msi=off with this machine type.\n");
|
|
|
|
error_report_err(local_err);
|
2011-07-03 15:00:09 +02:00
|
|
|
goto msi_error;
|
|
|
|
}
|
2016-06-20 08:13:39 +02:00
|
|
|
assert(!local_err || bridge_dev->msi == ON_OFF_AUTO_AUTO);
|
|
|
|
/* With msi=auto, we fall back to MSI off silently */
|
|
|
|
error_free(local_err);
|
2011-07-03 15:00:09 +02:00
|
|
|
}
|
2016-06-10 11:54:23 +02:00
|
|
|
|
2015-06-19 04:40:13 +02:00
|
|
|
if (shpc_present(dev)) {
|
|
|
|
/* TODO: spec recommends using 64 bit prefetcheable BAR.
|
|
|
|
* Check whether that works well. */
|
|
|
|
pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY |
|
|
|
|
PCI_BASE_ADDRESS_MEM_TYPE_64, &bridge_dev->bar);
|
|
|
|
}
|
2011-07-03 15:00:09 +02:00
|
|
|
return 0;
|
2016-06-10 11:54:23 +02:00
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
msi_error:
|
|
|
|
slotid_cap_cleanup(dev);
|
|
|
|
slotid_error:
|
2015-06-19 04:40:13 +02:00
|
|
|
if (shpc_present(dev)) {
|
|
|
|
shpc_cleanup(dev, &bridge_dev->bar);
|
|
|
|
}
|
2011-07-03 15:00:09 +02:00
|
|
|
shpc_error:
|
2012-07-04 06:39:27 +02:00
|
|
|
pci_bridge_exitfn(dev);
|
2016-01-15 03:23:32 +01:00
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2012-07-04 06:39:27 +02:00
|
|
|
static void pci_bridge_dev_exitfn(PCIDevice *dev)
|
2011-07-03 15:00:09 +02:00
|
|
|
{
|
2013-07-12 19:16:46 +02:00
|
|
|
PCIBridgeDev *bridge_dev = PCI_BRIDGE_DEV(dev);
|
2011-07-03 15:00:09 +02:00
|
|
|
if (msi_present(dev)) {
|
|
|
|
msi_uninit(dev);
|
|
|
|
}
|
|
|
|
slotid_cap_cleanup(dev);
|
2015-06-19 04:40:13 +02:00
|
|
|
if (shpc_present(dev)) {
|
|
|
|
shpc_cleanup(dev, &bridge_dev->bar);
|
|
|
|
}
|
2012-07-04 06:39:27 +02:00
|
|
|
pci_bridge_exitfn(dev);
|
2011-07-03 15:00:09 +02:00
|
|
|
}
|
|
|
|
|
2015-02-12 21:39:20 +01:00
|
|
|
static void pci_bridge_dev_instance_finalize(Object *obj)
|
|
|
|
{
|
2015-06-19 04:40:13 +02:00
|
|
|
/* this function is idempotent and handles (PCIDevice.shpc == NULL) */
|
2015-02-12 21:39:20 +01:00
|
|
|
shpc_free(PCI_DEVICE(obj));
|
|
|
|
}
|
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
static void pci_bridge_dev_write_config(PCIDevice *d,
|
|
|
|
uint32_t address, uint32_t val, int len)
|
|
|
|
{
|
|
|
|
pci_bridge_write_config(d, address, val, len);
|
|
|
|
if (msi_present(d)) {
|
|
|
|
msi_write_config(d, address, val, len);
|
|
|
|
}
|
2015-06-19 04:40:13 +02:00
|
|
|
if (shpc_present(d)) {
|
|
|
|
shpc_cap_write_config(d, address, val, len);
|
|
|
|
}
|
2011-07-03 15:00:09 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static void qdev_pci_bridge_dev_reset(DeviceState *qdev)
|
|
|
|
{
|
2013-07-12 19:16:46 +02:00
|
|
|
PCIDevice *dev = PCI_DEVICE(qdev);
|
2012-05-16 01:09:56 +02:00
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
pci_bridge_reset(qdev);
|
2015-06-19 04:40:13 +02:00
|
|
|
if (shpc_present(dev)) {
|
|
|
|
shpc_reset(dev);
|
|
|
|
}
|
2011-07-03 15:00:09 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static Property pci_bridge_dev_properties[] = {
|
|
|
|
/* Note: 0 is not a legal chassis number. */
|
2015-06-19 04:40:10 +02:00
|
|
|
DEFINE_PROP_UINT8(PCI_BRIDGE_DEV_PROP_CHASSIS_NR, PCIBridgeDev, chassis_nr,
|
|
|
|
0),
|
2016-06-20 08:13:38 +02:00
|
|
|
DEFINE_PROP_ON_OFF_AUTO(PCI_BRIDGE_DEV_PROP_MSI, PCIBridgeDev, msi,
|
|
|
|
ON_OFF_AUTO_AUTO),
|
2015-06-19 04:40:13 +02:00
|
|
|
DEFINE_PROP_BIT(PCI_BRIDGE_DEV_PROP_SHPC, PCIBridgeDev, flags,
|
2017-01-25 09:44:46 +01:00
|
|
|
PCI_BRIDGE_DEV_F_SHPC_REQ, false),
|
2011-07-03 15:00:09 +02:00
|
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
|
|
};
|
|
|
|
|
2015-06-19 04:40:13 +02:00
|
|
|
static bool pci_device_shpc_present(void *opaque, int version_id)
|
|
|
|
{
|
|
|
|
PCIDevice *dev = opaque;
|
|
|
|
|
|
|
|
return shpc_present(dev);
|
|
|
|
}
|
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
static const VMStateDescription pci_bridge_dev_vmstate = {
|
|
|
|
.name = "pci_bridge",
|
|
|
|
.fields = (VMStateField[]) {
|
2013-07-12 19:16:46 +02:00
|
|
|
VMSTATE_PCI_DEVICE(parent_obj, PCIBridge),
|
2015-06-19 04:40:13 +02:00
|
|
|
SHPC_VMSTATE(shpc, PCIDevice, pci_device_shpc_present),
|
2011-07-03 15:00:09 +02:00
|
|
|
VMSTATE_END_OF_LIST()
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2015-06-19 04:40:13 +02:00
|
|
|
static void pci_bridge_dev_hotplug_cb(HotplugHandler *hotplug_dev,
|
|
|
|
DeviceState *dev, Error **errp)
|
|
|
|
{
|
|
|
|
PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev);
|
|
|
|
|
|
|
|
if (!shpc_present(pci_hotplug_dev)) {
|
|
|
|
error_setg(errp, "standard hotplug controller has been disabled for "
|
|
|
|
"this %s", TYPE_PCI_BRIDGE_DEV);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
shpc_device_hotplug_cb(hotplug_dev, dev, errp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void pci_bridge_dev_hot_unplug_request_cb(HotplugHandler *hotplug_dev,
|
|
|
|
DeviceState *dev,
|
|
|
|
Error **errp)
|
|
|
|
{
|
|
|
|
PCIDevice *pci_hotplug_dev = PCI_DEVICE(hotplug_dev);
|
|
|
|
|
|
|
|
if (!shpc_present(pci_hotplug_dev)) {
|
|
|
|
error_setg(errp, "standard hotplug controller has been disabled for "
|
|
|
|
"this %s", TYPE_PCI_BRIDGE_DEV);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
shpc_device_hot_unplug_request_cb(hotplug_dev, dev, errp);
|
|
|
|
}
|
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
static void pci_bridge_dev_class_init(ObjectClass *klass, void *data)
|
|
|
|
{
|
|
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
|
2014-02-05 16:36:50 +01:00
|
|
|
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
|
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
k->init = pci_bridge_dev_initfn;
|
|
|
|
k->exit = pci_bridge_dev_exitfn;
|
|
|
|
k->config_write = pci_bridge_dev_write_config;
|
2012-12-13 10:19:38 +01:00
|
|
|
k->vendor_id = PCI_VENDOR_ID_REDHAT;
|
|
|
|
k->device_id = PCI_DEVICE_ID_REDHAT_BRIDGE;
|
2011-07-03 15:00:09 +02:00
|
|
|
k->class_id = PCI_CLASS_BRIDGE_PCI;
|
|
|
|
k->is_bridge = 1,
|
|
|
|
dc->desc = "Standard PCI Bridge";
|
|
|
|
dc->reset = qdev_pci_bridge_dev_reset;
|
|
|
|
dc->props = pci_bridge_dev_properties;
|
|
|
|
dc->vmsd = &pci_bridge_dev_vmstate;
|
2013-07-29 16:17:45 +02:00
|
|
|
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
|
2015-06-19 04:40:13 +02:00
|
|
|
hc->plug = pci_bridge_dev_hotplug_cb;
|
|
|
|
hc->unplug_request = pci_bridge_dev_hot_unplug_request_cb;
|
2011-07-03 15:00:09 +02:00
|
|
|
}
|
|
|
|
|
2013-01-10 16:19:07 +01:00
|
|
|
static const TypeInfo pci_bridge_dev_info = {
|
2015-02-12 21:39:20 +01:00
|
|
|
.name = TYPE_PCI_BRIDGE_DEV,
|
|
|
|
.parent = TYPE_PCI_BRIDGE,
|
|
|
|
.instance_size = sizeof(PCIBridgeDev),
|
|
|
|
.class_init = pci_bridge_dev_class_init,
|
|
|
|
.instance_finalize = pci_bridge_dev_instance_finalize,
|
2014-02-05 16:36:50 +01:00
|
|
|
.interfaces = (InterfaceInfo[]) {
|
|
|
|
{ TYPE_HOTPLUG_HANDLER },
|
|
|
|
{ }
|
|
|
|
}
|
2011-07-03 15:00:09 +02:00
|
|
|
};
|
|
|
|
|
2015-06-18 12:17:29 +02:00
|
|
|
/*
|
|
|
|
* Multiseat bridge. Same as the standard pci bridge, only with a
|
|
|
|
* different pci id, so we can match it easily in the guest for
|
|
|
|
* automagic multiseat configuration. See docs/multiseat.txt for more.
|
|
|
|
*/
|
|
|
|
static void pci_bridge_dev_seat_class_init(ObjectClass *klass, void *data)
|
|
|
|
{
|
|
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
|
|
|
|
|
|
|
|
k->device_id = PCI_DEVICE_ID_REDHAT_BRIDGE_SEAT;
|
|
|
|
dc->desc = "Standard PCI Bridge (multiseat)";
|
|
|
|
}
|
|
|
|
|
|
|
|
static const TypeInfo pci_bridge_dev_seat_info = {
|
|
|
|
.name = TYPE_PCI_BRIDGE_SEAT_DEV,
|
|
|
|
.parent = TYPE_PCI_BRIDGE_DEV,
|
|
|
|
.instance_size = sizeof(PCIBridgeDev),
|
|
|
|
.class_init = pci_bridge_dev_seat_class_init,
|
|
|
|
};
|
|
|
|
|
2011-07-03 15:00:09 +02:00
|
|
|
static void pci_bridge_dev_register(void)
|
|
|
|
{
|
|
|
|
type_register_static(&pci_bridge_dev_info);
|
2015-06-18 12:17:29 +02:00
|
|
|
type_register_static(&pci_bridge_dev_seat_info);
|
2011-07-03 15:00:09 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
type_init(pci_bridge_dev_register);
|