[svn-commits] tzafrir: branch tzafrir/sysfs r3151 - /team/tzafrir/sysfs/zaptel-sysfs.c
SVN commits to the Digium repositories
svn-commits at lists.digium.com
Wed Oct 17 04:57:44 CDT 2007
Author: tzafrir
Date: Wed Oct 17 04:57:44 2007
New Revision: 3151
URL: http://svn.digium.com/view/zaptel?view=rev&rev=3151
Log:
Better include the extra source file zatel-sysfs.c as well.
Added:
team/tzafrir/sysfs/zaptel-sysfs.c (with props)
Added: team/tzafrir/sysfs/zaptel-sysfs.c
URL: http://svn.digium.com/view/zaptel/team/tzafrir/sysfs/zaptel-sysfs.c?view=auto&rev=3151
==============================================================================
--- team/tzafrir/sysfs/zaptel-sysfs.c (added)
+++ team/tzafrir/sysfs/zaptel-sysfs.c Wed Oct 17 04:57:44 2007
@@ -1,0 +1,293 @@
+/*
+ * Written by Tzafrir Cohen <tzafrir.cohen at xorcom.com>
+ * Copyright (C) 2007, Xorcom
+ *
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+
+/****************************************************
+ *
+ * Device Model Stuff
+ *
+ */
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+# warning "This module is tested only with 2.6 kernels"
+#endif
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/device.h>
+#include "zap_dbg.h"
+#include "zaptel.h"
+#include "zaptel-sysfs.h"
+#include "zaptel-base.h"
+
+static const char rcsid[] = "$Id";
+
+/* Kernel versions... */
+/*
+ * Hotplug replaced with uevent in 2.6.16
+ */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16)
+#define OLD_HOPLUG_SUPPORT // for older kernels
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
+#define DEVICE_ATTR_FUNC(name,dev,buf) \
+ ssize_t name(struct device *dev, struct device_attribute *attr, char *buf)
+#else
+#define DEVICE_ATTR_FUNC(name,dev,buf) \
+ ssize_t name(struct device *dev, char *buf)
+#endif
+
+/* Always match, because the zaptel core handles all devices. */
+static int zap_bus_match(struct device *dev, struct device_driver *driver)
+{
+ zap_dbg("dev->bus_id = %s, driver->name = %s\n", dev->bus_id, driver->name);
+ return 1;
+}
+
+#ifdef OLD_HOPLUG_SUPPORT
+static int zap_bus_hotplug(struct device *dev, char **envp, int envnum, char *buff, int bufsize)
+{
+ struct zt_span *span;
+
+ if(!dev)
+ return -ENODEV;
+ span = dev_to_span(dev);
+ envp[0] = buff;
+ if(snprintf(buff, bufsize, "XBUS_NAME=%s", span->name) >= bufsize)
+ return -ENOMEM;
+ envp[1] = NULL;
+ return 0;
+}
+#else
+
+#define SPAN_ADD_UEVENT_VAR(fmt, val...) \
+ do { \
+ int err = add_uevent_var(envp, num_envp, &i, \
+ buffer, buffer_size, &len, \
+ fmt, val); \
+ if (err) \
+ return err; \
+ } while (0)
+
+static int zap_bus_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size)
+{
+ struct zt_span *span;
+ int i = 0;
+ int len = 0;
+
+ if(!dev)
+ return -ENODEV;
+ span = dev_to_span(dev);
+ zap_dbg("bus_id=%s span=%s\n", dev->bus_id, span->name);
+ SPAN_ADD_UEVENT_VAR("SPAN_NUM=%02d", span->spanno);
+ SPAN_ADD_UEVENT_VAR("SPAN_NAME=%s", span->name);
+ envp[i] = NULL;
+ return 0;
+}
+#endif
+
+static void zap_bus_release(struct device *dev)
+{
+ zap_dbg("\n");
+}
+
+static void zap_dev_release(struct device *dev)
+{
+ struct zt_span *span;
+
+ BUG_ON(!dev);
+ span = dev_to_span(dev);
+ zap_dbg_span(span, "\n");
+}
+
+static struct bus_type zap_bus_type = {
+ .name = "zaptel",
+ .match = zap_bus_match,
+#ifdef OLD_HOPLUG_SUPPORT
+ .hotplug = zap_bus_hotplug,
+#else
+ .uevent = zap_bus_uevent,
+#endif
+};
+
+static struct device zap_bus = {
+ .bus_id = "zapbus",
+ .release = zap_bus_release
+};
+
+static struct device_driver zap_driver = {
+ .name = "zapdrv",
+ .bus = &zap_bus_type,
+#ifndef OLD_HOPLUG_SUPPORT
+ .owner = THIS_MODULE
+#endif
+};
+
+int register_zap_bus(void)
+{
+ int ret;
+
+ if((ret = bus_register(&zap_bus_type)) < 0) {
+ zap_err("%s: bus_register failed. Error number %d", __FUNCTION__, ret);
+ goto failed_bus;
+ }
+ if((ret = device_register(&zap_bus)) < 0) {
+ zap_err("%s: registration of zap_bus failed. Error number %d",
+ __FUNCTION__, ret);
+ goto failed_busdevice;
+ }
+ if((ret = driver_register(&zap_driver)) < 0) {
+ zap_err("%s: driver_register failed. Error number %d", __FUNCTION__, ret);
+ goto failed_driver;
+ }
+ return 0;
+failed_driver:
+ device_unregister(&zap_bus);
+failed_busdevice:
+ bus_unregister(&zap_bus_type);
+failed_bus:
+ return ret;
+}
+
+void unregister_zap_bus(void)
+{
+ driver_unregister(&zap_driver);
+ device_unregister(&zap_bus);
+ bus_unregister(&zap_bus_type);
+}
+
+/*--------- Sysfs Device handling ----*/
+static DEVICE_ATTR_FUNC(digital_coding_show, dev, buf)
+{
+ struct zt_span *span = dev_to_span(dev);
+ int lineconfig = span->lineconfig;
+ char* name;
+
+ lineconfig &= ~(ZT_CONFIG_AMI | ZT_CONFIG_B8ZS | ZT_CONFIG_HDB3 );
+ switch (lineconfig) {
+ case ZT_CONFIG_AMI: name="ami"; break;
+ case ZT_CONFIG_B8ZS: name="b8zf"; break;
+ case ZT_CONFIG_HDB3: name="hdb3"; break;
+ default: name="unknown"; break;
+ }
+ return snprintf(buf, PAGE_SIZE, "%s\n", name);
+}
+static DEVICE_ATTR(digital_coding, S_IRUGO, digital_coding_show, NULL);
+
+static DEVICE_ATTR_FUNC(digital_framing_show, dev, buf)
+{
+ struct zt_span *span = dev_to_span(dev);
+ int lineconfig = span->lineconfig;
+ char* name;
+
+ lineconfig &= ~(ZT_CONFIG_D4 | ZT_CONFIG_ESF | ZT_CONFIG_CCS);
+ switch (lineconfig) {
+ case 0: name="cas"; break;
+ case ZT_CONFIG_D4: name="d4"; break;
+ case ZT_CONFIG_ESF: name="esf"; break;
+ case ZT_CONFIG_CCS: name="ccs"; break;
+ default: name="unknown"; break;
+ }
+ return snprintf(buf, PAGE_SIZE, "%s\n", name);
+}
+static DEVICE_ATTR(digital_framing, S_IRUGO, digital_framing_show, NULL);
+
+static DEVICE_ATTR_FUNC(flags_show, dev, buf)
+{
+ struct zt_span *span = dev_to_span(dev);
+ return snprintf(buf, PAGE_SIZE, "%x\n", span->flags);
+}
+static DEVICE_ATTR(flags, S_IRUGO, flags_show, NULL);
+
+static DEVICE_ATTR_FUNC(name_show, dev, buf)
+{
+ struct zt_span *span = dev_to_span(dev);
+ return snprintf(buf, PAGE_SIZE, "%s\n", span->name);
+}
+static DEVICE_ATTR(name, S_IRUGO, name_show, NULL);
+
+static DEVICE_ATTR_FUNC(sync_master_show, dev, buf)
+{
+ struct zt_span *span = dev_to_span(dev);
+ return snprintf(buf, PAGE_SIZE, "%s\n", (span == master) ? "Y":"N");
+}
+static DEVICE_ATTR(sync_master, S_IRUGO, sync_master_show, NULL);
+
+void span_sysfs_remove(struct zt_span *span)
+{
+ struct device *device;
+
+ BUG_ON(!span);
+ zap_dbg_span(span, "\n");
+ device = &span->device;
+ BUG_ON(!device);
+ device_remove_file(&span->device, &dev_attr_digital_coding);
+ device_remove_file(&span->device, &dev_attr_digital_framing);
+ device_remove_file(&span->device, &dev_attr_flags);
+ device_remove_file(&span->device, &dev_attr_name);
+ device_remove_file(&span->device, &dev_attr_sync_master);
+ device_unregister(&span->device);
+}
+
+#define span_add_attribute(name) \
+ ret = device_create_file(device, &dev_attr_##name); \
+ if(ret) { \
+ zap_err_span(span, "%s: device_create_file failed (flags): %d\n", __FUNCTION__, ret); \
+ goto out; \
+ }
+int span_sysfs_create(struct zt_span *span)
+{
+ struct device *device;
+ int ret = 0;
+
+ BUG_ON(!span);
+ device = &span->device;
+ BUG_ON(!device);
+ zap_dbg_span(span, "\n");
+ device_initialize(device);
+ device->bus = &zap_bus_type;
+ device->parent = &zap_bus;
+ snprintf(device->bus_id, BUS_ID_SIZE, "span-%02d", span->spanno);
+ device->driver_data = NULL; /* FIXME: add some usefull data */
+ device->release = zap_dev_release;
+ ret = device_register(device);
+ if(ret) {
+ zap_err_span(span, "%s: device_add failed: %d\n", __FUNCTION__, ret);
+ goto out;
+ }
+ span_add_attribute(digital_coding);
+ span_add_attribute(digital_framing);
+ span_add_attribute(flags);
+ span_add_attribute(name);
+ span_add_attribute(sync_master);
+out:
+ return ret;
+}
+/*
+ * End device Model Stuff
+ *
+ ****************************************************/
+
+
Propchange: team/tzafrir/sysfs/zaptel-sysfs.c
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Propchange: team/tzafrir/sysfs/zaptel-sysfs.c
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Propchange: team/tzafrir/sysfs/zaptel-sysfs.c
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