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#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#ifdef XSERVER_PLATFORM_BUS
#include <xf86drm.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
/* Linux platform device support */
#include "xf86_OSproc.h"
#include "xf86.h"
#include "xf86platformBus.h"
#include "xf86Bus.h"
#include "hotplug.h"
#include "systemd-logind.h"
static Bool
get_drm_info(struct OdevAttributes *attribs, char *path, int delayed_index)
{
drmSetVersion sv;
drmVersionPtr v;
char *buf;
int major, minor, fd;
int err = 0;
Bool paused, server_fd = FALSE;
major = attribs->major;
minor = attribs->minor;
fd = systemd_logind_take_fd(major, minor, path, &paused);
if (fd != -1) {
if (paused) {
LogMessage(X_ERROR,
"Error systemd-logind returned paused fd for drm node\n");
systemd_logind_release_fd(major, minor, -1);
return FALSE;
}
attribs->fd = fd;
server_fd = TRUE;
}
if (fd == -1)
fd = open(path, O_RDWR, O_CLOEXEC);
if (fd == -1)
return FALSE;
sv.drm_di_major = 1;
sv.drm_di_minor = 4;
sv.drm_dd_major = -1; /* Don't care */
sv.drm_dd_minor = -1; /* Don't care */
err = drmSetInterfaceVersion(fd, &sv);
if (err) {
xf86Msg(X_ERROR, "%s: failed to set DRM interface version 1.4: %s\n",
path, strerror(-err));
goto out;
}
/* for a delayed probe we've already added the device */
if (delayed_index == -1) {
xf86_add_platform_device(attribs, FALSE);
delayed_index = xf86_num_platform_devices - 1;
}
if (server_fd)
xf86_platform_devices[delayed_index].flags |= XF86_PDEV_SERVER_FD;
buf = drmGetBusid(fd);
xf86_platform_odev_attributes(delayed_index)->busid = XNFstrdup(buf);
drmFreeBusid(buf);
v = drmGetVersion(fd);
if (!v) {
xf86Msg(X_ERROR, "%s: failed to query DRM version\n", path);
goto out;
}
xf86_platform_odev_attributes(delayed_index)->driver = XNFstrdup(v->name);
drmFreeVersion(v);
out:
if (!server_fd)
close(fd);
return (err == 0);
}
Bool
xf86PlatformDeviceCheckBusID(struct xf86_platform_device *device, const char *busid)
{
const char *syspath = device->attribs->syspath;
BusType bustype;
const char *id;
if (!syspath)
return FALSE;
bustype = StringToBusType(busid, &id);
if (bustype == BUS_PCI) {
struct pci_device *pPci = device->pdev;
if (xf86ComparePciBusString(busid,
((pPci->domain << 8)
| pPci->bus),
pPci->dev, pPci->func)) {
return TRUE;
}
}
else if (bustype == BUS_PLATFORM) {
/* match on the minimum string */
int len = strlen(id);
if (strlen(syspath) < strlen(id))
len = strlen(syspath);
if (strncmp(id, syspath, len))
return FALSE;
return TRUE;
}
return FALSE;
}
void
xf86PlatformReprobeDevice(int index, struct OdevAttributes *attribs)
{
Bool ret;
char *dpath = attribs->path;
ret = get_drm_info(attribs, dpath, index);
if (ret == FALSE) {
xf86_remove_platform_device(index);
return;
}
ret = xf86platformAddDevice(index);
if (ret == -1)
xf86_remove_platform_device(index);
}
void
xf86PlatformDeviceProbe(struct OdevAttributes *attribs)
{
int i;
char *path = attribs->path;
Bool ret;
if (!path)
goto out_free;
for (i = 0; i < xf86_num_platform_devices; i++) {
char *dpath = xf86_platform_odev_attributes(i)->path;
if (dpath && !strcmp(path, dpath))
break;
}
if (i != xf86_num_platform_devices)
goto out_free;
LogMessage(X_INFO, "xfree86: Adding drm device (%s)\n", path);
if (!xf86VTOwner()) {
/* if we don't currently own the VT then don't probe the device,
just mark it as unowned for later use */
xf86_add_platform_device(attribs, TRUE);
return;
}
ret = get_drm_info(attribs, path, -1);
if (ret == FALSE)
goto out_free;
return;
out_free:
config_odev_free_attributes(attribs);
}
void NewGPUDeviceRequest(struct OdevAttributes *attribs)
{
int old_num = xf86_num_platform_devices;
int ret;
xf86PlatformDeviceProbe(attribs);
if (old_num == xf86_num_platform_devices)
return;
if (xf86_get_platform_device_unowned(xf86_num_platform_devices - 1) == TRUE)
return;
ret = xf86platformAddDevice(xf86_num_platform_devices-1);
if (ret == -1)
xf86_remove_platform_device(xf86_num_platform_devices-1);
ErrorF("xf86: found device %d\n", xf86_num_platform_devices);
return;
}
void DeleteGPUDeviceRequest(struct OdevAttributes *attribs)
{
int index;
char *syspath = attribs->syspath;
if (!syspath)
goto out;
for (index = 0; index < xf86_num_platform_devices; index++) {
char *dspath = xf86_platform_odev_attributes(index)->syspath;
if (dspath && !strcmp(syspath, dspath))
break;
}
if (index == xf86_num_platform_devices)
goto out;
ErrorF("xf86: remove device %d %s\n", index, syspath);
if (xf86_get_platform_device_unowned(index) == TRUE)
xf86_remove_platform_device(index);
else
xf86platformRemoveDevice(index);
out:
config_odev_free_attributes(attribs);
}
#endif
|
