Files
ModemManager/plugins/mm-plugin-simtech.c
Aleksander Morgado f9f6d1dfdb plugins: propagate cached probing result to supports task
We need to ensure that the supports task always has the results of the probing,
no matter if the probing was just launched by the plugin grabbing the port, or
by a previous plugin. We do this during supports_port(), by propagating to the
supports task any possible previously cached probing results.
2011-06-06 17:21:47 +02:00

203 lines
7.0 KiB
C

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* 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:
*
* Copyright (C) 2008 - 2009 Novell, Inc.
* Copyright (C) 2009 - 2010 Red Hat, Inc.
*/
#include <string.h>
#include <gmodule.h>
#include "mm-plugin-simtech.h"
#include "mm-modem-simtech-gsm.h"
#include "mm-generic-gsm.h"
#include "mm-generic-cdma.h"
G_DEFINE_TYPE (MMPluginSimtech, mm_plugin_simtech, MM_TYPE_PLUGIN_BASE)
int mm_plugin_major_version = MM_PLUGIN_MAJOR_VERSION;
int mm_plugin_minor_version = MM_PLUGIN_MINOR_VERSION;
G_MODULE_EXPORT MMPlugin *
mm_plugin_create (void)
{
return MM_PLUGIN (g_object_new (MM_TYPE_PLUGIN_SIMTECH,
MM_PLUGIN_BASE_NAME, "SimTech",
NULL));
}
/*****************************************************************************/
#define CAP_CDMA (MM_PLUGIN_BASE_PORT_CAP_IS707_A | \
MM_PLUGIN_BASE_PORT_CAP_IS707_P | \
MM_PLUGIN_BASE_PORT_CAP_IS856 | \
MM_PLUGIN_BASE_PORT_CAP_IS856_A)
static guint32
get_level_for_capabilities (guint32 capabilities)
{
if (capabilities & MM_PLUGIN_BASE_PORT_CAP_GSM)
return 10;
if (capabilities & CAP_CDMA)
return 10;
if (capabilities & MM_PLUGIN_BASE_PORT_CAP_QCDM)
return 10;
return 0;
}
static void
probe_result (MMPluginBase *base,
MMPluginBaseSupportsTask *task,
guint32 capabilities,
gpointer user_data)
{
mm_plugin_base_supports_task_complete (task, get_level_for_capabilities (capabilities));
}
static MMPluginSupportsResult
supports_port (MMPluginBase *base,
MMModem *existing,
MMPluginBaseSupportsTask *task)
{
GUdevDevice *port;
guint16 vendor = 0;
const char *subsys, *name;
/* Can't do anything with non-serial ports */
port = mm_plugin_base_supports_task_get_port (task);
if (strcmp (g_udev_device_get_subsystem (port), "tty"))
return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
subsys = g_udev_device_get_subsystem (port);
name = g_udev_device_get_name (port);
if (!mm_plugin_base_get_device_ids (base, subsys, name, &vendor, NULL))
return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
/* A-Link (for now) */
if (vendor != 0x1e0e)
return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
/* Check if a previous probing was already launched in this port */
if (mm_plugin_base_supports_task_propagate_cached (task)) {
guint32 level;
/* A previous probing was already done, use its results */
level = get_level_for_capabilities (mm_plugin_base_supports_task_get_probed_capabilities (task));
if (level) {
mm_plugin_base_supports_task_complete (task, level);
return MM_PLUGIN_SUPPORTS_PORT_IN_PROGRESS;
}
return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
}
/* Otherwise kick off a probe */
if (mm_plugin_base_probe_port (base, task, 100000, NULL))
return MM_PLUGIN_SUPPORTS_PORT_IN_PROGRESS;
return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
}
static MMModem *
grab_port (MMPluginBase *base,
MMModem *existing,
MMPluginBaseSupportsTask *task,
GError **error)
{
GUdevDevice *port = NULL;
MMModem *modem = NULL;
const char *name, *subsys, *sysfs_path;
guint32 caps;
MMPortType ptype = MM_PORT_TYPE_UNKNOWN;
guint16 vendor = 0, product = 0;
port = mm_plugin_base_supports_task_get_port (task);
g_assert (port);
/* Look for port type hints; just probing can't distinguish which port should
* be the data/primary port on these devices. We have to tag them based on
* what the Windows .INF files say the port layout should be.
*/
if (g_udev_device_get_property_as_boolean (port, "ID_MM_SIMTECH_PORT_TYPE_MODEM"))
ptype = MM_PORT_TYPE_PRIMARY;
else if (g_udev_device_get_property_as_boolean (port, "ID_MM_SIMTECH_PORT_TYPE_AUX"))
ptype = MM_PORT_TYPE_SECONDARY;
/* If the device was tagged by the udev rules, then ignore any other ports
* to guard against race conditions if a device just happens to show up
* with more than two AT-capable ports.
*/
if ( (ptype == MM_PORT_TYPE_UNKNOWN)
&& g_udev_device_get_property_as_boolean (port, "ID_MM_SIMTECH_TAGGED"))
ptype = MM_PORT_TYPE_IGNORED;
subsys = g_udev_device_get_subsystem (port);
name = g_udev_device_get_name (port);
if (!mm_plugin_base_get_device_ids (base, subsys, name, &vendor, &product)) {
g_set_error (error, 0, 0, "Could not get modem product ID.");
return NULL;
}
caps = mm_plugin_base_supports_task_get_probed_capabilities (task);
sysfs_path = mm_plugin_base_supports_task_get_physdev_path (task);
if (!existing) {
if (caps & MM_PLUGIN_BASE_PORT_CAP_GSM) {
modem = mm_modem_simtech_gsm_new (sysfs_path,
mm_plugin_base_supports_task_get_driver (task),
mm_plugin_get_name (MM_PLUGIN (base)),
vendor,
product);
} else if (caps & CAP_CDMA) {
modem = mm_generic_cdma_new (sysfs_path,
mm_plugin_base_supports_task_get_driver (task),
mm_plugin_get_name (MM_PLUGIN (base)),
!!(caps & MM_PLUGIN_BASE_PORT_CAP_IS856),
!!(caps & MM_PLUGIN_BASE_PORT_CAP_IS856_A),
vendor,
product);
}
if (modem) {
if (!mm_modem_grab_port (modem, subsys, name, ptype, NULL, error)) {
g_object_unref (modem);
return NULL;
}
}
} else if (get_level_for_capabilities (caps)) {
if (caps & MM_PLUGIN_BASE_PORT_CAP_QCDM)
ptype = MM_PORT_TYPE_QCDM;
modem = existing;
if (!mm_modem_grab_port (modem, subsys, name, ptype, NULL, error))
return NULL;
}
return modem;
}
/*****************************************************************************/
static void
mm_plugin_simtech_init (MMPluginSimtech *self)
{
g_signal_connect (self, "probe-result", G_CALLBACK (probe_result), NULL);
}
static void
mm_plugin_simtech_class_init (MMPluginSimtechClass *klass)
{
MMPluginBaseClass *pb_class = MM_PLUGIN_BASE_CLASS (klass);
pb_class->supports_port = supports_port;
pb_class->grab_port = grab_port;
}