4dad94d500
Make port roles more flexible. We have modems that do PPP on interfaces other than the primary interface, and that wasn't possible with the old code. So clean up all that logic and move the port organization code into the core so we can reduce code in the plugins. In the new world order, the plugins say whether the port is a QCDM port, an AT port, or ignored. If it's an AT port the plugins get to tag it as primary, secondary, or PPP, or any combination of the 3. This allows for modems where PPP should really be done on the secondary port (Huawei E220, Sierra devices) so that the primary port stays open for command and status. Modem subclasses no longer get asked to handle port grabbing themselves. Instead, that's now done by the generic classes (MMGenericCdma and MMGenericGsm) and the plugins are notified when a port is grabbed so they can add unsolicited response handlers for it. After all ports are grabbed by the generic classes, they get "organized", which assigns various ports to the roles of PRIMARY, SECONDARY, DATA, and QCDM based on specific rules and hints that the plugin provided (which are expressed as MMAtPortFlags). The plugins then have a chance to perform fixups on the primary port if they choose. The plugin code is responsible for determining the port hints (ie MMAtPortFlags) at probe time, instead of having a combination of the plugin and the modem class do the job. This simplifies things greatly for the plugins at the expense of more complicated logic in the core.
260 lines
9.6 KiB
C
260 lines
9.6 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details:
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*
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* Copyright (C) 2008 - 2009 Novell, Inc.
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* Copyright (C) 2009 - 2010 Red Hat, Inc.
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*/
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#include <string.h>
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#include <gmodule.h>
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#include "mm-plugin-longcheer.h"
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#include "mm-modem-longcheer-gsm.h"
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#include "mm-generic-gsm.h"
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#include "mm-generic-cdma.h"
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#include "mm-modem-helpers.h"
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G_DEFINE_TYPE (MMPluginLongcheer, mm_plugin_longcheer, MM_TYPE_PLUGIN_BASE)
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int mm_plugin_major_version = MM_PLUGIN_MAJOR_VERSION;
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int mm_plugin_minor_version = MM_PLUGIN_MINOR_VERSION;
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G_MODULE_EXPORT MMPlugin *
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mm_plugin_create (void)
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{
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return MM_PLUGIN (g_object_new (MM_TYPE_PLUGIN_LONGCHEER,
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MM_PLUGIN_BASE_NAME, "Longcheer",
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NULL));
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}
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/*****************************************************************************/
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#define CAP_CDMA (MM_PLUGIN_BASE_PORT_CAP_IS707_A | \
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MM_PLUGIN_BASE_PORT_CAP_IS707_P | \
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MM_PLUGIN_BASE_PORT_CAP_IS856 | \
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MM_PLUGIN_BASE_PORT_CAP_IS856_A)
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static guint32
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get_level_for_capabilities (guint32 capabilities)
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{
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if (capabilities & MM_PLUGIN_BASE_PORT_CAP_GSM)
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return 10;
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if (capabilities & CAP_CDMA)
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return 10;
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if (capabilities & MM_PLUGIN_BASE_PORT_CAP_QCDM)
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return 10;
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return 0;
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}
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static void
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probe_result (MMPluginBase *base,
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MMPluginBaseSupportsTask *task,
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guint32 capabilities,
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gpointer user_data)
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{
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mm_plugin_base_supports_task_complete (task, get_level_for_capabilities (capabilities));
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}
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static gboolean
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custom_init_response_cb (MMPluginBaseSupportsTask *task,
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GString *response,
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GError *error,
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guint32 tries,
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gboolean *out_stop,
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guint32 *out_level,
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gpointer user_data)
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{
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const char *p;
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if (error)
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return tries <= 4 ? TRUE : FALSE;
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/* Note the lack of a ':' on the GMR; the X200 doesn't send one */
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g_assert (response);
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p = mm_strip_tag (response->str, "AT+GMR");
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if (*p == 'L') {
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/* X200 modems have a GMR firmware revision that starts with 'L', and
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* as far as I can tell X060s devices have a revision starting with 'C'.
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* So use that to determine if the device is an X200, which this plugin
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* does not support since it uses a different chipset even though the
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* X060s and the X200 have the exact same USB VID and PID.
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*/
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*out_level = 0;
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*out_stop = TRUE;
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return FALSE;
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}
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/* Continue with generic probing */
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return FALSE;
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}
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static MMPluginSupportsResult
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supports_port (MMPluginBase *base,
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MMModem *existing,
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MMPluginBaseSupportsTask *task)
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{
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GUdevDevice *port;
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guint16 vendor = 0, product = 0;
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const char *subsys, *name;
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/* Can't do anything with non-serial ports */
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port = mm_plugin_base_supports_task_get_port (task);
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if (strcmp (g_udev_device_get_subsystem (port), "tty"))
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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subsys = g_udev_device_get_subsystem (port);
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name = g_udev_device_get_name (port);
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if (!mm_plugin_base_get_device_ids (base, subsys, name, &vendor, &product))
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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/* Longcheer and TAMobile */
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if (vendor != 0x1c9e && vendor != 0x1bbb)
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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/* Some TAMobile devices are different chipsets and should be handled
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* by other plugins, so only handle LONGCHEER tagged devices here.
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*/
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if (g_udev_device_get_property_as_boolean (port, "ID_MM_LONGCHEER_TAGGED") == FALSE)
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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/* Check if a previous probing was already launched in this port */
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if (mm_plugin_base_supports_task_propagate_cached (task)) {
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guint32 level;
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/* A previous probing was already done, use its results */
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level = get_level_for_capabilities (mm_plugin_base_supports_task_get_probed_capabilities (task));
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if (level) {
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mm_plugin_base_supports_task_complete (task, level);
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return MM_PLUGIN_SUPPORTS_PORT_IN_PROGRESS;
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}
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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}
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/* TCT/Alcatel in their infinite wisdom assigned the same USB VID/PID to
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* the x060s (Longcheer firmware) and the x200 (something else) and thus
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* we can't tell them apart via udev rules. Worse, they both report the
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* same +GMM and +GMI, so we're left with just +GMR which is a sketchy way
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* to tell modems apart. We can't really use Longcheer-specific commands
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* like AT+MODODR or AT+PSRAT because we're not sure if they work when the
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* SIM PIN has not been entered yet; many modems have a limited command
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* parser before the SIM is unlocked.
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*/
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if (vendor == 0x1bbb && product == 0x0000) {
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mm_plugin_base_supports_task_add_custom_init_command (task,
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"AT+GMR",
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3,
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custom_init_response_cb,
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NULL);
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}
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/* Otherwise kick off a probe */
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if (mm_plugin_base_probe_port (base, task, 100000, NULL))
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return MM_PLUGIN_SUPPORTS_PORT_IN_PROGRESS;
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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}
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static MMModem *
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grab_port (MMPluginBase *base,
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MMModem *existing,
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MMPluginBaseSupportsTask *task,
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GError **error)
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{
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GUdevDevice *port = NULL;
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MMModem *modem = NULL;
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const char *name, *subsys, *sysfs_path;
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guint32 caps;
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MMPortType ptype;
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MMAtPortFlags pflags = MM_AT_PORT_FLAG_NONE;
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guint16 vendor = 0, product = 0;
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port = mm_plugin_base_supports_task_get_port (task);
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g_assert (port);
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/* Look for port type hints; just probing can't distinguish which port should
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* be the data/primary port on these devices. We have to tag them based on
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* what the Windows .INF files say the port layout should be.
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*/
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if (g_udev_device_get_property_as_boolean (port, "ID_MM_LONGCHEER_PORT_TYPE_MODEM"))
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pflags = MM_AT_PORT_FLAG_PRIMARY;
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else if (g_udev_device_get_property_as_boolean (port, "ID_MM_LONGCHEER_PORT_TYPE_AUX"))
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pflags = MM_AT_PORT_FLAG_SECONDARY;
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caps = mm_plugin_base_supports_task_get_probed_capabilities (task);
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ptype = mm_plugin_base_probed_capabilities_to_port_type (caps);
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/* If the port was tagged by the udev rules but isn't a primary or secondary,
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* then ignore it to guard against race conditions if a device just happens
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* to show up with more than two AT-capable ports.
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*/
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if ( (pflags == MM_AT_PORT_FLAG_NONE)
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&& g_udev_device_get_property_as_boolean (port, "ID_MM_LONGCHEER_TAGGED"))
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ptype = MM_PORT_TYPE_IGNORED;
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subsys = g_udev_device_get_subsystem (port);
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name = g_udev_device_get_name (port);
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if (!mm_plugin_base_get_device_ids (base, subsys, name, &vendor, &product)) {
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g_set_error (error, 0, 0, "Could not get modem product ID.");
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return NULL;
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}
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sysfs_path = mm_plugin_base_supports_task_get_physdev_path (task);
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if (!existing) {
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if (caps & MM_PLUGIN_BASE_PORT_CAP_GSM) {
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modem = mm_modem_longcheer_gsm_new (sysfs_path,
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mm_plugin_base_supports_task_get_driver (task),
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mm_plugin_get_name (MM_PLUGIN (base)),
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vendor,
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product);
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} else if (caps & CAP_CDMA) {
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modem = mm_generic_cdma_new (sysfs_path,
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mm_plugin_base_supports_task_get_driver (task),
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mm_plugin_get_name (MM_PLUGIN (base)),
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!!(caps & MM_PLUGIN_BASE_PORT_CAP_IS856),
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!!(caps & MM_PLUGIN_BASE_PORT_CAP_IS856_A),
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vendor,
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product);
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}
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if (modem) {
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if (!mm_modem_grab_port (modem, subsys, name, ptype, pflags, NULL, error)) {
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g_object_unref (modem);
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return NULL;
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}
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}
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} else if (get_level_for_capabilities (caps)) {
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modem = existing;
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if (!mm_modem_grab_port (modem, subsys, name, ptype, pflags, NULL, error))
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return NULL;
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}
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return modem;
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}
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/*****************************************************************************/
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static void
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mm_plugin_longcheer_init (MMPluginLongcheer *self)
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{
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g_signal_connect (self, "probe-result", G_CALLBACK (probe_result), NULL);
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}
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static void
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mm_plugin_longcheer_class_init (MMPluginLongcheerClass *klass)
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{
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MMPluginBaseClass *pb_class = MM_PLUGIN_BASE_CLASS (klass);
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pb_class->supports_port = supports_port;
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pb_class->grab_port = grab_port;
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}
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