0816e8fca6
At the point where xf86BusProbe runs we haven't yet taken our own VT, which means we can't perform drm "master" operations on the device. This is tragic, because we need master to fish the bus id string out of the kernel, which we can only do after drmSetInterfaceVersion, which for some reason stores that string on the device not the file handle and thus needs master access. Fortunately we know the format of the busid string, and it happens to almost be the same as the ID_PATH variable from udev. Use that instead and stop calling drmSetInterfaceVersion. Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Adam Jackson <ajax@redhat.com>
536 lines
17 KiB
C
536 lines
17 KiB
C
/*
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* Copyright © 2009 Julien Cristau
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Julien Cristau <jcristau@debian.org>
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <libudev.h>
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#include <ctype.h>
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#include <unistd.h>
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#include "input.h"
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#include "inputstr.h"
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#include "hotplug.h"
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#include "config-backends.h"
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#include "os.h"
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#include "globals.h"
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#include "systemd-logind.h"
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#define UDEV_XKB_PROP_KEY "xkb"
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#define LOG_PROPERTY(path, prop, val) \
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LogMessageVerb(X_INFO, 10, \
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"config/udev: getting property %s on %s " \
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"returned \"%s\"\n", \
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(prop), (path), (val) ? (val) : "(null)")
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#define LOG_SYSATTR(path, attr, val) \
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LogMessageVerb(X_INFO, 10, \
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"config/udev: getting attribute %s on %s " \
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"returned \"%s\"\n", \
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(attr), (path), (val) ? (val) : "(null)")
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static struct udev_monitor *udev_monitor;
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#ifdef CONFIG_UDEV_KMS
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static void
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config_udev_odev_setup_attribs(struct udev_device *udev_device, const char *path, const char *syspath,
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int major, int minor,
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config_odev_probe_proc_ptr probe_callback);
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#endif
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static char itoa_buf[16];
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static const char *itoa(int i)
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{
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snprintf(itoa_buf, sizeof(itoa_buf), "%d", i);
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return itoa_buf;
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}
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static Bool
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check_seat(struct udev_device *udev_device)
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{
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const char *dev_seat;
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dev_seat = udev_device_get_property_value(udev_device, "ID_SEAT");
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if (!dev_seat)
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dev_seat = "seat0";
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if (SeatId && strcmp(dev_seat, SeatId))
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return FALSE;
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if (!SeatId && strcmp(dev_seat, "seat0"))
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return FALSE;
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return TRUE;
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}
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static void
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device_added(struct udev_device *udev_device)
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{
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const char *path, *name = NULL;
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char *config_info = NULL;
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const char *syspath;
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const char *tags_prop;
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const char *key, *value, *tmp;
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InputOption *input_options;
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InputAttributes attrs = { };
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DeviceIntPtr dev = NULL;
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struct udev_list_entry *set, *entry;
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struct udev_device *parent;
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int rc;
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dev_t devnum;
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path = udev_device_get_devnode(udev_device);
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syspath = udev_device_get_syspath(udev_device);
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if (!path || !syspath)
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return;
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if (!check_seat(udev_device))
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return;
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devnum = udev_device_get_devnum(udev_device);
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#ifdef CONFIG_UDEV_KMS
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if (!strcmp(udev_device_get_subsystem(udev_device), "drm")) {
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const char *sysname = udev_device_get_sysname(udev_device);
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if (strncmp(sysname, "card", 4) != 0)
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return;
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/* Check for devices already added through xf86platformProbe() */
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if (xf86_find_platform_device_by_devnum(major(devnum), minor(devnum)))
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return;
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LogMessage(X_INFO, "config/udev: Adding drm device (%s)\n", path);
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config_udev_odev_setup_attribs(udev_device, path, syspath, major(devnum),
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minor(devnum), NewGPUDeviceRequest);
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return;
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}
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#endif
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value = udev_device_get_property_value(udev_device, "ID_INPUT");
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if (!value || !strcmp(value, "0")) {
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LogMessageVerb(X_INFO, 10,
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"config/udev: ignoring device %s without "
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"property ID_INPUT set\n", path);
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return;
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}
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input_options = input_option_new(NULL, "_source", "server/udev");
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if (!input_options)
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return;
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parent = udev_device_get_parent(udev_device);
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if (parent) {
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const char *ppath = udev_device_get_devnode(parent);
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const char *product = udev_device_get_property_value(parent, "PRODUCT");
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const char *pnp_id = udev_device_get_sysattr_value(parent, "id");
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unsigned int usb_vendor, usb_model;
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name = udev_device_get_sysattr_value(parent, "name");
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LOG_SYSATTR(ppath, "name", name);
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if (!name) {
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name = udev_device_get_property_value(parent, "NAME");
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LOG_PROPERTY(ppath, "NAME", name);
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}
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/* construct USB ID in lowercase hex - "0000:ffff" */
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if (product &&
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sscanf(product, "%*x/%4x/%4x/%*x", &usb_vendor, &usb_model) == 2) {
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char *usb_id;
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if (asprintf(&usb_id, "%04x:%04x", usb_vendor, usb_model)
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== -1)
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usb_id = NULL;
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else
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LOG_PROPERTY(ppath, "PRODUCT", product);
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attrs.usb_id = usb_id;
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}
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while (!pnp_id && (parent = udev_device_get_parent(parent))) {
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pnp_id = udev_device_get_sysattr_value(parent, "id");
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if (!pnp_id)
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continue;
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attrs.pnp_id = strdup(pnp_id);
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ppath = udev_device_get_devnode(parent);
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LOG_SYSATTR(ppath, "id", pnp_id);
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}
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}
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if (!name)
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name = "(unnamed)";
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else
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attrs.product = strdup(name);
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input_options = input_option_new(input_options, "name", name);
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input_options = input_option_new(input_options, "path", path);
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input_options = input_option_new(input_options, "device", path);
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input_options = input_option_new(input_options, "major", itoa(major(devnum)));
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input_options = input_option_new(input_options, "minor", itoa(minor(devnum)));
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if (path)
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attrs.device = strdup(path);
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tags_prop = udev_device_get_property_value(udev_device, "ID_INPUT.tags");
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LOG_PROPERTY(path, "ID_INPUT.tags", tags_prop);
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attrs.tags = xstrtokenize(tags_prop, ",");
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if (asprintf(&config_info, "udev:%s", syspath) == -1) {
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config_info = NULL;
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goto unwind;
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}
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if (device_is_duplicate(config_info)) {
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LogMessage(X_WARNING, "config/udev: device %s already added. "
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"Ignoring.\n", name);
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goto unwind;
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}
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set = udev_device_get_properties_list_entry(udev_device);
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udev_list_entry_foreach(entry, set) {
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key = udev_list_entry_get_name(entry);
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if (!key)
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continue;
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value = udev_list_entry_get_value(entry);
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if (!strncasecmp(key, UDEV_XKB_PROP_KEY, sizeof(UDEV_XKB_PROP_KEY) - 1)) {
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LOG_PROPERTY(path, key, value);
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tmp = key + sizeof(UDEV_XKB_PROP_KEY) - 1;
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if (!strcasecmp(tmp, "rules"))
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input_options =
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input_option_new(input_options, "xkb_rules", value);
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else if (!strcasecmp(tmp, "layout"))
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input_options =
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input_option_new(input_options, "xkb_layout", value);
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else if (!strcasecmp(tmp, "variant"))
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input_options =
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input_option_new(input_options, "xkb_variant", value);
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else if (!strcasecmp(tmp, "model"))
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input_options =
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input_option_new(input_options, "xkb_model", value);
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else if (!strcasecmp(tmp, "options"))
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input_options =
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input_option_new(input_options, "xkb_options", value);
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}
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else if (!strcmp(key, "ID_VENDOR")) {
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LOG_PROPERTY(path, key, value);
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attrs.vendor = strdup(value);
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} else if (!strncmp(key, "ID_INPUT_", 9)) {
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const struct pfmap {
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const char *property;
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unsigned int flag;
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} map[] = {
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{ "ID_INPUT_KEY", ATTR_KEY },
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{ "ID_INPUT_KEYBOARD", ATTR_KEYBOARD },
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{ "ID_INPUT_MOUSE", ATTR_POINTER },
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{ "ID_INPUT_JOYSTICK", ATTR_JOYSTICK },
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{ "ID_INPUT_TABLET", ATTR_TABLET },
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{ "ID_INPUT_TABLET_PAD", ATTR_TABLET_PAD },
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{ "ID_INPUT_TOUCHPAD", ATTR_TOUCHPAD },
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{ "ID_INPUT_TOUCHSCREEN", ATTR_TOUCHSCREEN },
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{ NULL, 0 },
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};
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/* Anything but the literal string "0" is considered a
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* boolean true. The empty string isn't a thing with udev
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* properties anyway */
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if (value && strcmp(value, "0")) {
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const struct pfmap *m = map;
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while (m->property != NULL) {
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if (!strcmp(m->property, key)) {
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LOG_PROPERTY(path, key, value);
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attrs.flags |= m->flag;
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}
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m++;
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}
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}
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}
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}
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input_options = input_option_new(input_options, "config_info", config_info);
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/* Default setting needed for non-seat0 seats */
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if (ServerIsNotSeat0())
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input_options = input_option_new(input_options, "GrabDevice", "on");
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LogMessage(X_INFO, "config/udev: Adding input device %s (%s)\n",
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name, path);
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rc = NewInputDeviceRequest(input_options, &attrs, &dev);
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if (rc != Success)
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goto unwind;
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unwind:
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free(config_info);
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input_option_free_list(&input_options);
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free(attrs.usb_id);
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free(attrs.pnp_id);
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free(attrs.product);
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free(attrs.device);
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free(attrs.vendor);
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if (attrs.tags) {
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char **tag = attrs.tags;
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while (*tag) {
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free(*tag);
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tag++;
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}
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free(attrs.tags);
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}
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return;
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}
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static void
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device_removed(struct udev_device *device)
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{
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char *value;
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const char *syspath = udev_device_get_syspath(device);
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#ifdef CONFIG_UDEV_KMS
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if (!strcmp(udev_device_get_subsystem(device), "drm")) {
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const char *sysname = udev_device_get_sysname(device);
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const char *path = udev_device_get_devnode(device);
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dev_t devnum = udev_device_get_devnum(device);
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if ((strncmp(sysname,"card", 4) != 0) || (path == NULL))
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return;
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LogMessage(X_INFO, "config/udev: removing GPU device %s %s\n",
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syspath, path);
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config_udev_odev_setup_attribs(device, path, syspath, major(devnum),
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minor(devnum), DeleteGPUDeviceRequest);
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/* Retry vtenter after a drm node removal */
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systemd_logind_vtenter();
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return;
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}
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#endif
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if (asprintf(&value, "udev:%s", syspath) == -1)
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return;
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remove_devices("udev", value);
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free(value);
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}
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static void
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socket_handler(int fd, int ready, void *data)
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{
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struct udev_device *udev_device;
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const char *action;
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input_lock();
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udev_device = udev_monitor_receive_device(udev_monitor);
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if (!udev_device) {
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input_unlock();
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return;
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}
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action = udev_device_get_action(udev_device);
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if (action) {
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if (!strcmp(action, "add")) {
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device_removed(udev_device);
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device_added(udev_device);
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} else if (!strcmp(action, "change")) {
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/* ignore change for the drm devices */
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if (strcmp(udev_device_get_subsystem(udev_device), "drm")) {
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device_removed(udev_device);
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device_added(udev_device);
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}
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}
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else if (!strcmp(action, "remove"))
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device_removed(udev_device);
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}
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udev_device_unref(udev_device);
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input_unlock();
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}
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int
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config_udev_pre_init(void)
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{
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struct udev *udev;
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udev = udev_new();
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if (!udev)
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return 0;
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udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
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if (!udev_monitor)
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return 0;
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udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "input",
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NULL);
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/* For Wacom serial devices */
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udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL);
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#ifdef CONFIG_UDEV_KMS
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/* For output GPU devices */
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udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "drm", NULL);
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#endif
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#ifdef HAVE_UDEV_MONITOR_FILTER_ADD_MATCH_TAG
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if (ServerIsNotSeat0())
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udev_monitor_filter_add_match_tag(udev_monitor, SeatId);
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#endif
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if (udev_monitor_enable_receiving(udev_monitor)) {
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ErrorF("config/udev: failed to bind the udev monitor\n");
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return 0;
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}
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return 1;
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}
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int
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config_udev_init(void)
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{
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struct udev *udev;
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struct udev_enumerate *enumerate;
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struct udev_list_entry *devices, *device;
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udev = udev_monitor_get_udev(udev_monitor);
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enumerate = udev_enumerate_new(udev);
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if (!enumerate)
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return 0;
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udev_enumerate_add_match_subsystem(enumerate, "input");
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udev_enumerate_add_match_subsystem(enumerate, "tty");
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#ifdef CONFIG_UDEV_KMS
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udev_enumerate_add_match_subsystem(enumerate, "drm");
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#endif
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#ifdef HAVE_UDEV_ENUMERATE_ADD_MATCH_TAG
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if (ServerIsNotSeat0())
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udev_enumerate_add_match_tag(enumerate, SeatId);
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#endif
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udev_enumerate_scan_devices(enumerate);
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devices = udev_enumerate_get_list_entry(enumerate);
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udev_list_entry_foreach(device, devices) {
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const char *syspath = udev_list_entry_get_name(device);
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struct udev_device *udev_device =
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udev_device_new_from_syspath(udev, syspath);
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/* Device might be gone by the time we try to open it */
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if (!udev_device)
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continue;
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device_added(udev_device);
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udev_device_unref(udev_device);
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}
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udev_enumerate_unref(enumerate);
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SetNotifyFd(udev_monitor_get_fd(udev_monitor), socket_handler, X_NOTIFY_READ, NULL);
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return 1;
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}
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void
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config_udev_fini(void)
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{
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struct udev *udev;
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if (!udev_monitor)
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return;
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udev = udev_monitor_get_udev(udev_monitor);
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RemoveNotifyFd(udev_monitor_get_fd(udev_monitor));
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udev_monitor_unref(udev_monitor);
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udev_monitor = NULL;
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udev_unref(udev);
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}
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#ifdef CONFIG_UDEV_KMS
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static void
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config_udev_odev_setup_attribs(struct udev_device *udev_device, const char *path, const char *syspath,
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int major, int minor,
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config_odev_probe_proc_ptr probe_callback)
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{
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struct OdevAttributes *attribs = config_odev_allocate_attributes();
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const char *value;
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attribs->path = XNFstrdup(path);
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attribs->syspath = XNFstrdup(syspath);
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attribs->major = major;
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attribs->minor = minor;
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value = udev_device_get_property_value(udev_device, "ID_PATH");
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if (value && !strncmp(value, "pci-", 4)) {
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attribs->busid = XNFstrdup(value);
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attribs->busid[3] = ':';
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}
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/* ownership of attribs is passed to probe layer */
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probe_callback(attribs);
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}
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void
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config_udev_odev_probe(config_odev_probe_proc_ptr probe_callback)
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|
{
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|
struct udev *udev;
|
|
struct udev_enumerate *enumerate;
|
|
struct udev_list_entry *devices, *device;
|
|
|
|
udev = udev_monitor_get_udev(udev_monitor);
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|
enumerate = udev_enumerate_new(udev);
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|
if (!enumerate)
|
|
return;
|
|
|
|
udev_enumerate_add_match_subsystem(enumerate, "drm");
|
|
udev_enumerate_add_match_sysname(enumerate, "card[0-9]*");
|
|
#ifdef HAVE_UDEV_ENUMERATE_ADD_MATCH_TAG
|
|
if (ServerIsNotSeat0())
|
|
udev_enumerate_add_match_tag(enumerate, SeatId);
|
|
#endif
|
|
udev_enumerate_scan_devices(enumerate);
|
|
devices = udev_enumerate_get_list_entry(enumerate);
|
|
udev_list_entry_foreach(device, devices) {
|
|
const char *syspath = udev_list_entry_get_name(device);
|
|
struct udev_device *udev_device = udev_device_new_from_syspath(udev, syspath);
|
|
const char *path = udev_device_get_devnode(udev_device);
|
|
const char *sysname = udev_device_get_sysname(udev_device);
|
|
dev_t devnum = udev_device_get_devnum(udev_device);
|
|
|
|
if (!path || !syspath)
|
|
goto no_probe;
|
|
else if (strcmp(udev_device_get_subsystem(udev_device), "drm") != 0)
|
|
goto no_probe;
|
|
else if (strncmp(sysname, "card", 4) != 0)
|
|
goto no_probe;
|
|
else if (!check_seat(udev_device))
|
|
goto no_probe;
|
|
|
|
config_udev_odev_setup_attribs(udev_device, path, syspath, major(devnum),
|
|
minor(devnum), probe_callback);
|
|
no_probe:
|
|
udev_device_unref(udev_device);
|
|
}
|
|
udev_enumerate_unref(enumerate);
|
|
return;
|
|
}
|
|
#endif
|
|
|