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xserver/hw/xfree86/common/xf86platformBus.c

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/*
* Copyright © 2012 Red Hat.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Author: Dave Airlie <airlied@redhat.com>
*/
/*
* This file contains the interfaces to the bus-specific code
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#ifdef XSERVER_PLATFORM_BUS
#include <errno.h>
#include <pciaccess.h>
#include <fcntl.h>
#include <unistd.h>
#include "dix/screenint_priv.h"
#include "os.h"
#include "hotplug.h"
#include "systemd-logind.h"
#include "loaderProcs.h"
#include "xf86.h"
#include "xf86_os_support.h"
#include "xf86_OSproc.h"
#include "xf86Priv.h"
#include "xf86str.h"
#include "xf86Bus.h"
#include "Pci.h"
#include "xf86platformBus.h"
#include "xf86Config.h"
#include "xf86Crtc.h"
#include "randrstr.h"
int platformSlotClaimed;
int xf86_num_platform_devices;
struct xf86_platform_device *xf86_platform_devices;
int
xf86_add_platform_device(struct OdevAttributes *attribs, Bool unowned)
{
xf86_platform_devices = XNFreallocarray(xf86_platform_devices,
xf86_num_platform_devices + 1,
sizeof(struct xf86_platform_device));
xf86_platform_devices[xf86_num_platform_devices].attribs = attribs;
xf86_platform_devices[xf86_num_platform_devices].pdev = NULL;
xf86_platform_devices[xf86_num_platform_devices].flags =
unowned ? XF86_PDEV_UNOWNED : 0;
xf86_num_platform_devices++;
return 0;
}
int
xf86_remove_platform_device(int dev_index)
{
int j;
config_odev_free_attributes(xf86_platform_devices[dev_index].attribs);
for (j = dev_index; j < xf86_num_platform_devices - 1; j++)
memcpy(&xf86_platform_devices[j], &xf86_platform_devices[j + 1], sizeof(struct xf86_platform_device));
xf86_num_platform_devices--;
return 0;
}
Bool
xf86_get_platform_device_unowned(int index)
{
return (xf86_platform_devices[index].flags & XF86_PDEV_UNOWNED) ?
TRUE : FALSE;
}
struct xf86_platform_device *
xf86_find_platform_device_by_devnum(int major, int minor)
{
int i, attr_major, attr_minor;
for (i = 0; i < xf86_num_platform_devices; i++) {
attr_major = xf86_platform_odev_attributes(i)->major;
attr_minor = xf86_platform_odev_attributes(i)->minor;
if (attr_major == major && attr_minor == minor)
return &xf86_platform_devices[i];
}
return NULL;
}
/*
* xf86IsPrimaryPlatform() -- return TRUE if primary device
* is a platform device and it matches this one.
*/
static Bool
xf86IsPrimaryPlatform(struct xf86_platform_device *plat)
{
/* Add max. 1 screen for the IgnorePrimary fallback path */
if (xf86ProbeIgnorePrimary && xf86NumScreens == 0)
return TRUE;
if (primaryBus.type == BUS_PLATFORM)
return plat == primaryBus.id.plat;
#ifdef XSERVER_LIBPCIACCESS
if (primaryBus.type == BUS_PCI)
if (plat->pdev)
if (MATCH_PCI_DEVICES(primaryBus.id.pci, plat->pdev))
return TRUE;
#endif
return FALSE;
}
static void
platform_find_pci_info(struct xf86_platform_device *pd, char *busid)
{
struct pci_slot_match devmatch;
struct pci_device *info;
struct pci_device_iterator *iter;
int ret;
ret = sscanf(busid, "pci:%04x:%02x:%02x.%u",
&devmatch.domain, &devmatch.bus, &devmatch.dev,
&devmatch.func);
if (ret != 4)
return;
iter = pci_slot_match_iterator_create(&devmatch);
info = pci_device_next(iter);
if (info)
pd->pdev = info;
pci_iterator_destroy(iter);
}
static Bool
xf86_check_platform_slot(const struct xf86_platform_device *pd)
{
int i;
for (i = 0; i < xf86NumEntities; i++) {
const EntityPtr u = xf86Entities[i];
if (pd->pdev && u->bus.type == BUS_PCI &&
MATCH_PCI_DEVICES(pd->pdev, u->bus.id.pci)) {
return FALSE;
}
if ((u->bus.type == BUS_PLATFORM) && (pd == u->bus.id.plat)) {
return FALSE;
}
}
return TRUE;
}
static Bool
MatchToken(const char *value, struct xorg_list *patterns,
int (*compare)(const char *, const char *))
{
const xf86MatchGroup *group;
/* If there are no patterns, accept the match */
if (xorg_list_is_empty(patterns))
return TRUE;
/* If there are patterns but no attribute, reject the match */
if (!value)
return FALSE;
/*
* Otherwise, iterate the list of patterns ensuring each entry has a
* match. Each list entry is a separate Match line of the same type.
*/
xorg_list_for_each_entry(group, patterns, entry) {
Bool match = FALSE;
char *const *cur;
for (cur = group->values; *cur; cur++) {
if ((*compare)(value, *cur) == 0) {
match = TRUE;
break;
}
}
if (!match)
return FALSE;
}
/* All the entries in the list matched the attribute */
return TRUE;
}
static Bool
OutputClassMatches(const XF86ConfOutputClassPtr oclass,
struct xf86_platform_device *dev)
{
char *driver = dev->attribs->driver;
if (!MatchToken(driver, &oclass->match_driver, strcmp))
return FALSE;
return TRUE;
}
static void
xf86OutputClassDriverList(int index, XF86MatchedDrivers *md)
{
XF86ConfOutputClassPtr cl;
for (cl = xf86configptr->conf_outputclass_lst; cl; cl = cl->list.next) {
if (OutputClassMatches(cl, &xf86_platform_devices[index])) {
char *path = xf86_platform_odev_attributes(index)->path;
xf86Msg(X_INFO, "Applying OutputClass \"%s\" to %s\n",
cl->identifier, path);
xf86Msg(X_NONE, "\tloading driver: %s\n", cl->driver);
xf86AddMatchedDriver(md, cl->driver);
}
}
}
/**
* @return The numbers of found devices that match with the current system
* drivers.
*/
void
xf86PlatformMatchDriver(XF86MatchedDrivers *md)
{
int i;
struct pci_device *info = NULL;
int pass = 0;
for (pass = 0; pass < 2; pass++) {
for (i = 0; i < xf86_num_platform_devices; i++) {
if (xf86IsPrimaryPlatform(&xf86_platform_devices[i]) && (pass == 1))
continue;
else if (!xf86IsPrimaryPlatform(&xf86_platform_devices[i]) && (pass == 0))
continue;
xf86OutputClassDriverList(i, md);
info = xf86_platform_devices[i].pdev;
#ifdef __linux__
if (info)
xf86MatchDriverFromFiles(info->vendor_id, info->device_id, md);
#endif
if (info != NULL) {
xf86VideoPtrToDriverList(info, md);
}
}
}
}
void xf86PlatformScanPciDev(void)
{
int i;
if (!xf86scanpci())
return;
xf86Msg(X_CONFIG, "Scanning the platform PCI devices\n");
for (i = 0; i < xf86_num_platform_devices; i++) {
char *busid = xf86_platform_odev_attributes(i)->busid;
if (strncmp(busid, "pci:", 4) == 0)
platform_find_pci_info(&xf86_platform_devices[i], busid);
}
}
int
xf86platformProbe(void)
{
int i;
Bool pci = TRUE;
XF86ConfOutputClassPtr cl, cl_head = (xf86configptr) ?
xf86configptr->conf_outputclass_lst : NULL;
char *old_path, *path = NULL;
config_odev_probe(xf86PlatformDeviceProbe);
if (!xf86scanpci()) {
pci = FALSE;
}
for (i = 0; i < xf86_num_platform_devices; i++) {
char *busid = xf86_platform_odev_attributes(i)->busid;
if (pci && busid && (strncmp(busid, "pci:", 4) == 0)) {
platform_find_pci_info(&xf86_platform_devices[i], busid);
}
/*
* Deal with OutputClass ModulePath directives, these must be
* processed before we do any module loading.
*/
for (cl = cl_head; cl; cl = cl->list.next) {
if (!OutputClassMatches(cl, &xf86_platform_devices[i]))
continue;
if (cl->modulepath && xf86ModPathFrom != X_CMDLINE) {
old_path = path;
XNFasprintf(&path, "%s,%s", cl->modulepath,
path ? path : xf86ModulePath);
free(old_path);
xf86Msg(X_CONFIG, "OutputClass \"%s\" ModulePath extended to \"%s\"\n",
cl->identifier, path);
LoaderSetPath(path);
}
}
}
free(path);
/* First see if there is an OutputClass match marking a device as primary */
for (i = 0; i < xf86_num_platform_devices; i++) {
struct xf86_platform_device *dev = &xf86_platform_devices[i];
for (cl = cl_head; cl; cl = cl->list.next) {
if (!OutputClassMatches(cl, dev))
continue;
if (xf86CheckBoolOption(cl->option_lst, "PrimaryGPU", FALSE)) {
xf86Msg(X_CONFIG, "OutputClass \"%s\" setting %s as PrimaryGPU\n",
cl->identifier, dev->attribs->path);
primaryBus.type = BUS_PLATFORM;
primaryBus.id.plat = dev;
return 0;
}
}
}
/* Then check for pci_device_is_boot_vga() */
for (i = 0; i < xf86_num_platform_devices; i++) {
struct xf86_platform_device *dev = &xf86_platform_devices[i];
if (!dev->pdev)
continue;
pci_device_probe(dev->pdev);
if (pci_device_is_boot_vga(dev->pdev)) {
primaryBus.type = BUS_PLATFORM;
primaryBus.id.plat = dev;
}
}
return 0;
}
void
xf86MergeOutputClassOptions(int entityIndex, void **options)
{
const EntityPtr entity = xf86Entities[entityIndex];
struct xf86_platform_device *dev = NULL;
XF86ConfOutputClassPtr cl;
XF86OptionPtr classopts;
int i = 0;
switch (entity->bus.type) {
case BUS_PLATFORM:
dev = entity->bus.id.plat;
break;
case BUS_PCI:
for (i = 0; i < xf86_num_platform_devices; i++) {
if (xf86_platform_devices[i].pdev) {
if (MATCH_PCI_DEVICES(xf86_platform_devices[i].pdev,
entity->bus.id.pci)) {
dev = &xf86_platform_devices[i];
break;
}
}
}
break;
default:
xf86Msg(X_DEBUG, "xf86MergeOutputClassOptions unsupported bus type %d\n",
entity->bus.type);
}
if (!dev)
return;
for (cl = xf86configptr->conf_outputclass_lst; cl; cl = cl->list.next) {
if (!OutputClassMatches(cl, dev) || !cl->option_lst)
continue;
xf86Msg(X_INFO, "Applying OutputClass \"%s\" options to %s\n",
cl->identifier, dev->attribs->path);
classopts = xf86optionListDup(cl->option_lst);
*options = xf86optionListMerge(*options, classopts);
}
}
static int
xf86ClaimPlatformSlot(struct xf86_platform_device * d, DriverPtr drvp,
int chipset, GDevPtr dev, Bool active)
{
EntityPtr p = NULL;
int num;
if (xf86_check_platform_slot(d)) {
num = xf86AllocateEntity();
p = xf86Entities[num];
p->driver = drvp;
p->chipset = chipset;
p->bus.type = BUS_PLATFORM;
p->bus.id.plat = d;
p->active = active;
p->inUse = FALSE;
if (dev)
xf86AddDevToEntity(num, dev);
platformSlotClaimed++;
return num;
}
else
return -1;
}
static int
xf86UnclaimPlatformSlot(struct xf86_platform_device *d, GDevPtr dev)
{
int i;
for (i = 0; i < xf86NumEntities; i++) {
const EntityPtr p = xf86Entities[i];
if ((p->bus.type == BUS_PLATFORM) && (p->bus.id.plat == d)) {
if (dev)
xf86RemoveDevFromEntity(i, dev);
platformSlotClaimed--;
p->bus.type = BUS_NONE;
return 0;
}
}
return 0;
}
#define END_OF_MATCHES(m) \
(((m).vendor_id == 0) && ((m).device_id == 0) && ((m).subvendor_id == 0))
static Bool doPlatformProbe(struct xf86_platform_device *dev, DriverPtr drvp,
GDevPtr gdev, int flags, intptr_t match_data)
{
Bool foundScreen = FALSE;
int entity;
if (gdev && gdev->screen == 0 && !xf86_check_platform_slot(dev))
return FALSE;
entity = xf86ClaimPlatformSlot(dev, drvp, 0,
gdev, gdev ? gdev->active : 0);
if ((entity == -1) && gdev && (gdev->screen > 0)) {
unsigned nent;
for (nent = 0; nent < xf86NumEntities; nent++) {
EntityPtr pEnt = xf86Entities[nent];
if (pEnt->bus.type != BUS_PLATFORM)
continue;
if (pEnt->bus.id.plat == dev) {
entity = nent;
xf86AddDevToEntity(nent, gdev);
break;
}
}
}
if (entity != -1) {
if ((dev->flags & XF86_PDEV_SERVER_FD) && (!drvp->driverFunc ||
!drvp->driverFunc(NULL, SUPPORTS_SERVER_FDS, NULL))) {
systemd_logind_release_fd(dev->attribs->major, dev->attribs->minor, dev->attribs->fd);
dev->attribs->fd = -1;
dev->flags &= ~XF86_PDEV_SERVER_FD;
}
if (drvp->platformProbe(drvp, entity, flags, dev, match_data))
foundScreen = TRUE;
else
xf86UnclaimPlatformSlot(dev, gdev);
}
return foundScreen;
}
static Bool
probeSingleDevice(struct xf86_platform_device *dev, DriverPtr drvp, GDevPtr gdev, int flags)
{
int k;
Bool foundScreen = FALSE;
struct pci_device *pPci;
const struct pci_id_match *const devices = drvp->supported_devices;
if (dev->pdev && devices) {
int device_id = dev->pdev->device_id;
pPci = dev->pdev;
for (k = 0; !END_OF_MATCHES(devices[k]); k++) {
if (PCI_ID_COMPARE(devices[k].vendor_id, pPci->vendor_id)
&& PCI_ID_COMPARE(devices[k].device_id, device_id)
&& ((devices[k].device_class_mask & pPci->device_class)
== devices[k].device_class)) {
foundScreen = doPlatformProbe(dev, drvp, gdev, flags, devices[k].match_data);
if (foundScreen)
break;
}
}
}
else if (dev->pdev && !devices)
return FALSE;
else
foundScreen = doPlatformProbe(dev, drvp, gdev, flags, 0);
return foundScreen;
}
static Bool
isGPUDevice(GDevPtr gdev)
{
int i;
for (i = 0; i < gdev->myScreenSection->num_gpu_devices; i++) {
if (gdev == gdev->myScreenSection->gpu_devices[i])
return TRUE;
}
return FALSE;
}
int
xf86platformProbeDev(DriverPtr drvp)
{
Bool foundScreen = FALSE;
GDevPtr *devList;
const unsigned numDevs = xf86MatchDevice(drvp->driverName, &devList);
int i, j;
/* find the main device or any device specified in xorg.conf */
for (i = 0; i < numDevs; i++) {
const char *devpath;
/* skip inactive devices */
if (!devList[i]->active)
continue;
/* This is specific to modesetting. */
devpath = xf86FindOptionValue(devList[i]->options, "kmsdev");
for (j = 0; j < xf86_num_platform_devices; j++) {
if (devpath && *devpath) {
if (strcmp(xf86_platform_devices[j].attribs->path, devpath) == 0)
break;
} else if (devList[i]->busID && *devList[i]->busID) {
if (xf86PlatformDeviceCheckBusID(&xf86_platform_devices[j], devList[i]->busID))
break;
}
else {
/* for non-seat0 servers assume first device is the master */
if (ServerIsNotSeat0()) {
break;
} else {
/* Accept the device if the driver is hyperv_drm */
if (strcmp(xf86_platform_devices[j].attribs->driver, "hyperv_drm") == 0)
break;
/* Accept the device if the driver is ofdrm */
if (strcmp(xf86_platform_devices[j].attribs->driver, "ofdrm") == 0)
break;
/* Accept the device if the driver is simpledrm */
if (strcmp(xf86_platform_devices[j].attribs->driver, "simpledrm") == 0)
break;
}
if (xf86IsPrimaryPlatform(&xf86_platform_devices[j]))
break;
}
}
if (j == xf86_num_platform_devices)
continue;
foundScreen = probeSingleDevice(&xf86_platform_devices[j], drvp, devList[i],
isGPUDevice(devList[i]) ? PLATFORM_PROBE_GPU_SCREEN : 0);
}
free(devList);
return foundScreen;
}
int
xf86platformAddGPUDevices(DriverPtr drvp)
{
Bool foundScreen = FALSE;
GDevPtr *devList;
int j;
if (!drvp->platformProbe)
return FALSE;
xf86MatchDevice(drvp->driverName, &devList);
/* if autoaddgpu devices is enabled then go find any unclaimed platform
* devices and add them as GPU screens */
if (xf86Info.autoAddGPU) {
for (j = 0; j < xf86_num_platform_devices; j++) {
if (probeSingleDevice(&xf86_platform_devices[j], drvp,
devList ? devList[0] : NULL,
PLATFORM_PROBE_GPU_SCREEN))
foundScreen = TRUE;
}
}
free(devList);
return foundScreen;
}
const char *
xf86PlatformFindHotplugDriver(int dev_index)
{
XF86ConfOutputClassPtr cl;
const char *hp_driver = NULL;
struct xf86_platform_device *dev = &xf86_platform_devices[dev_index];
for (cl = xf86configptr->conf_outputclass_lst; cl; cl = cl->list.next) {
if (!OutputClassMatches(cl, dev) || !cl->option_lst)
continue;
hp_driver = xf86FindOptionValue(cl->option_lst, "HotplugDriver");
if (hp_driver)
xf86MarkOptionUsed(cl->option_lst);
}
/* Return the first driver from the match list */
xf86Msg(X_INFO, "matching hotplug-driver is %s\n",
hp_driver ? hp_driver : "none");
return hp_driver;
}
int
xf86platformAddDevice(const char *driver_name, int index)
{
int i, old_screens, scr_index, scrnum;
DriverPtr drvp = NULL;
screenLayoutPtr layout;
if (!xf86Info.autoAddGPU)
return -1;
/* Load modesetting driver if no driver given, or driver open failed */
if (!driver_name || !xf86LoadOneModule(driver_name, NULL)) {
driver_name = "modesetting";
xf86LoadOneModule(driver_name, NULL);
}
for (i = 0; i < xf86NumDrivers; i++) {
if (!xf86DriverList[i])
continue;
if (!strcmp(xf86DriverList[i]->driverName, driver_name)) {
drvp = xf86DriverList[i];
break;
}
}
if (i == xf86NumDrivers) {
ErrorF("can't find driver %s for hotplugged device\n", driver_name);
return -1;
}
old_screens = xf86NumGPUScreens;
doPlatformProbe(&xf86_platform_devices[index], drvp, NULL,
PLATFORM_PROBE_GPU_SCREEN, 0);
if (old_screens == xf86NumGPUScreens)
return -1;
i = old_screens;
for (layout = xf86ConfigLayout.screens; layout->screen != NULL;
layout++) {
xf86GPUScreens[i]->confScreen = layout->screen;
break;
}
if (xf86GPUScreens[i]->PreInit &&
xf86GPUScreens[i]->PreInit(xf86GPUScreens[i], 0))
xf86GPUScreens[i]->configured = TRUE;
if (!xf86GPUScreens[i]->configured) {
ErrorF("hotplugged device %d didn't configure\n", i);
xf86DeleteScreen(xf86GPUScreens[i]);
return -1;
}
scr_index = AddGPUScreen(xf86GPUScreens[i]->ScreenInit, 0, NULL);
if (scr_index == -1) {
xf86DeleteScreen(xf86GPUScreens[i]);
xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL);
xf86NumGPUScreens = old_screens;
return -1;
}
dixSetPrivate(&xf86GPUScreens[i]->pScreen->devPrivates,
xf86ScreenKey, xf86GPUScreens[i]);
PixmapScreenInit(xf86GPUScreens[i]->pScreen);
if (xf86GPUScreens[i]->pScreen->CreateScreenResources &&
!(*xf86GPUScreens[i]->pScreen->CreateScreenResources) (xf86GPUScreens[i]->pScreen)) {
RemoveGPUScreen(xf86GPUScreens[i]->pScreen);
xf86DeleteScreen(xf86GPUScreens[i]);
xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL);
xf86NumGPUScreens = old_screens;
return -1;
}
/* attach unbound to the configured protocol screen (or 0) */
scrnum = xf86GPUScreens[i]->confScreen->screennum;
AttachUnboundGPU(xf86Screens[scrnum]->pScreen, xf86GPUScreens[i]->pScreen);
if (xf86Info.autoBindGPU)
RRProviderAutoConfigGpuScreen(xf86ScrnToScreen(xf86GPUScreens[i]),
xf86ScrnToScreen(xf86Screens[scrnum]));
RRResourcesChanged(xf86Screens[scrnum]->pScreen);
RRTellChanged(xf86Screens[scrnum]->pScreen);
return 0;
}
void
xf86platformRemoveDevice(int index)
{
EntityPtr entity;
int ent_num, i, j, scrnum;
Bool found;
for (ent_num = 0; ent_num < xf86NumEntities; ent_num++) {
entity = xf86Entities[ent_num];
if (entity->bus.type == BUS_PLATFORM &&
entity->bus.id.plat == &xf86_platform_devices[index])
break;
}
if (ent_num == xf86NumEntities)
goto out;
found = FALSE;
for (i = 0; i < xf86NumGPUScreens; i++) {
for (j = 0; j < xf86GPUScreens[i]->numEntities; j++)
if (xf86GPUScreens[i]->entityList[j] == ent_num) {
found = TRUE;
break;
}
if (found)
break;
}
if (!found) {
ErrorF("failed to find screen to remove\n");
goto out;
}
scrnum = xf86GPUScreens[i]->confScreen->screennum;
xf86GPUScreens[i]->pScreen->CloseScreen(xf86GPUScreens[i]->pScreen);
RemoveGPUScreen(xf86GPUScreens[i]->pScreen);
xf86DeleteScreen(xf86GPUScreens[i]);
xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL);
xf86_remove_platform_device(index);
RRResourcesChanged(xf86Screens[scrnum]->pScreen);
RRTellChanged(xf86Screens[scrnum]->pScreen);
out:
return;
}
/* called on return from VT switch to find any new devices */
void xf86platformVTProbe(void)
{
int i;
for (i = 0; i < xf86_num_platform_devices; i++) {
if (!(xf86_platform_devices[i].flags & XF86_PDEV_UNOWNED))
continue;
xf86_platform_devices[i].flags &= ~XF86_PDEV_UNOWNED;
xf86PlatformReprobeDevice(i, xf86_platform_devices[i].attribs);
}
}
void xf86platformPrimary(void)
{
/* use the first platform device as a fallback */
if (primaryBus.type == BUS_NONE) {
xf86Msg(X_INFO, "no primary bus or device found\n");
if (xf86_num_platform_devices > 0) {
primaryBus.id.plat = &xf86_platform_devices[0];
primaryBus.type = BUS_PLATFORM;
xf86Msg(X_NONE, "\tfalling back to %s\n", primaryBus.id.plat->attribs->syspath);
}
}
}
#endif
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