author | Florian Pose <fp@igh-essen.com> |
Fri, 06 Jan 2006 16:19:35 +0000 | |
changeset 49 | 3f8e769ca747 |
parent 42 | a22a202d0f42 |
child 52 | c0405659a74a |
permissions | -rw-r--r-- |
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EtherCAT-Master in eigenes Modul ausgelagert.
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/****************************************************************************** |
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parents:
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* |
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parents:
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* ec_module.c |
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EtherCAT-Master in eigenes Modul ausgelagert.
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* |
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parents:
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* EtherCAT-Master-Treiber |
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EtherCAT-Master in eigenes Modul ausgelagert.
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parents:
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* |
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parents:
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* Autoren: Wilhelm Hagemeister, Florian Pose |
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parents:
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* |
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parents:
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* $Id$ |
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parents:
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* |
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parents:
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* (C) Copyright IgH 2005 |
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EtherCAT-Master in eigenes Modul ausgelagert.
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* Ingenieurgemeinschaft IgH |
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EtherCAT-Master in eigenes Modul ausgelagert.
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* Heinz-Bäcker Str. 34 |
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* D-45356 Essen |
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* Tel.: +49 201/61 99 31 |
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* Fax.: +49 201/61 98 36 |
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* E-mail: sp@igh-essen.com |
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* |
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*****************************************************************************/ |
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|
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/init.h> |
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#include "ec_module.h" |
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/*****************************************************************************/ |
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#define LIT(X) #X |
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#define STR(X) LIT(X) |
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#define COMPILE_INFO "Revision " STR(EC_REV) \ |
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", compiled by " STR(EC_USER) \ |
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" at " STR(EC_DATE) |
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/*****************************************************************************/ |
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|
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int ecat_master_count = 1; |
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EtherCAT_master_t *ecat_masters = NULL; |
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int *ecat_masters_reserved = NULL; |
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/*****************************************************************************/ |
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|
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MODULE_AUTHOR ("Wilhelm Hagemeister <hm@igh-essen.com>," |
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"Florian Pose <fp@igh-essen.com>"); |
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MODULE_DESCRIPTION ("EtherCAT master driver module"); |
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MODULE_LICENSE("GPL"); |
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MODULE_VERSION(COMPILE_INFO); |
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|
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module_param(ecat_master_count, int, 1); |
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MODULE_PARM_DESC(ecat_master_count, |
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"Number of EtherCAT master to initialize."); |
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|
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module_init(ecat_init_module); |
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module_exit(ecat_cleanup_module); |
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|
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EXPORT_SYMBOL(EtherCAT_register_device); |
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EXPORT_SYMBOL(EtherCAT_unregister_device); |
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EXPORT_SYMBOL(EtherCAT_request); |
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EXPORT_SYMBOL(EtherCAT_release); |
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|
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/*****************************************************************************/ |
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|
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/** |
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Init-Funktion des EtherCAT-Master-Treibermodules |
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|
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Initialisiert soviele Master, wie im Parameter ecat_master_count |
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angegeben wurde (Default ist 1). |
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|
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@returns 0, wenn alles o.k., -1 bei ungueltiger Anzahl Master |
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oder zu wenig Speicher. |
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*/ |
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|
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int __init ecat_init_module(void) |
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{ |
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unsigned int i; |
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|
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printk(KERN_ERR "EtherCAT: Master driver, %s\n", COMPILE_INFO); |
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|
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if (ecat_master_count < 1) { |
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printk(KERN_ERR "EtherCAT: Error - Illegal" |
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" ecat_master_count: %i\n", ecat_master_count); |
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83 |
return -1; |
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84 |
} |
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|
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printk(KERN_ERR "EtherCAT: Initializing %i EtherCAT master(s)...\n", |
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ecat_master_count); |
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88 |
|
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89 |
if ((ecat_masters = |
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(EtherCAT_master_t *) kmalloc(sizeof(EtherCAT_master_t) |
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91 |
* ecat_master_count, |
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GFP_KERNEL)) == NULL) { |
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printk(KERN_ERR "EtherCAT: Could not allocate" |
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" memory for EtherCAT master(s)!\n"); |
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return -1; |
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96 |
} |
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97 |
|
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98 |
if ((ecat_masters_reserved = |
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(int *) kmalloc(sizeof(int) * ecat_master_count, |
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GFP_KERNEL)) == NULL) { |
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printk(KERN_ERR "EtherCAT: Could not allocate" |
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102 |
" memory for reservation flags!\n"); |
33
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103 |
kfree(ecat_masters); |
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104 |
return -1; |
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105 |
} |
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parents:
27
diff
changeset
|
106 |
|
27
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EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
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|
107 |
for (i = 0; i < ecat_master_count; i++) |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
108 |
{ |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
109 |
EtherCAT_master_init(&ecat_masters[i]); |
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
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parents:
27
diff
changeset
|
110 |
ecat_masters_reserved[i] = 0; |
27
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
111 |
} |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
112 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
113 |
printk(KERN_ERR "EtherCAT: Master driver initialized.\n"); |
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EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
114 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
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parents:
diff
changeset
|
115 |
return 0; |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
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parents:
diff
changeset
|
116 |
} |
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EtherCAT-Master in eigenes Modul ausgelagert.
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parents:
diff
changeset
|
117 |
|
39
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|
118 |
/*****************************************************************************/ |
27
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
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parents:
diff
changeset
|
119 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
120 |
/** |
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EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
121 |
Cleanup-Funktion des EtherCAT-Master-Treibermoduls |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
122 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
123 |
Entfernt alle Master-Instanzen. |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
124 |
*/ |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
125 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
126 |
void __exit ecat_cleanup_module(void) |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
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diff
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|
127 |
{ |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
128 |
unsigned int i; |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
129 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
130 |
printk(KERN_ERR "EtherCAT: Cleaning up master driver...\n"); |
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EtherCAT-Master in eigenes Modul ausgelagert.
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parents:
diff
changeset
|
131 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
132 |
if (ecat_masters) |
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EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
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changeset
|
133 |
{ |
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EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
134 |
for (i = 0; i < ecat_master_count; i++) |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
135 |
{ |
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
136 |
if (ecat_masters_reserved[i]) { |
39
6965c23a6826
likely/unlikely, Fehlermeldungen in zyklischem Code begrenzt und Kommentare ge??ndert.
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34
diff
changeset
|
137 |
printk(KERN_WARNING "EtherCAT: Warning -" |
6965c23a6826
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Florian Pose <fp@igh-essen.com>
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34
diff
changeset
|
138 |
" Master %i is still in use!\n", i); |
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
139 |
} |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
140 |
|
27
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
141 |
EtherCAT_master_clear(&ecat_masters[i]); |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
142 |
} |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
143 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
144 |
kfree(ecat_masters); |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
145 |
} |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
146 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
147 |
printk(KERN_ERR "EtherCAT: Master driver cleaned up.\n"); |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
148 |
} |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
149 |
|
39
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Florian Pose <fp@igh-essen.com>
parents:
34
diff
changeset
|
150 |
/*****************************************************************************/ |
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
151 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
152 |
/** |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
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27
diff
changeset
|
153 |
Setzt das EtherCAT-Geraet, auf dem der Master arbeitet. |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
154 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
155 |
Registriert das Geraet beim Master, der es daraufhin oeffnet. |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
156 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
157 |
@param master Der EtherCAT-Master |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
158 |
@param device Das EtherCAT-Geraet |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
159 |
@return 0, wenn alles o.k., |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
160 |
< 0, wenn bereits ein Geraet registriert |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
161 |
oder das Geraet nicht geoeffnet werden konnte. |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
162 |
*/ |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
163 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
164 |
int EtherCAT_register_device(int index, EtherCAT_device_t *device) |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
165 |
{ |
39
6965c23a6826
likely/unlikely, Fehlermeldungen in zyklischem Code begrenzt und Kommentare ge??ndert.
Florian Pose <fp@igh-essen.com>
parents:
34
diff
changeset
|
166 |
if (index < 0 || index >= ecat_master_count) { |
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
167 |
printk(KERN_ERR "EtherCAT: Master %i does not exist!\n", index); |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
168 |
return -1; |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
169 |
} |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
170 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
171 |
return EtherCAT_master_open(&ecat_masters[index], device); |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
172 |
} |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
173 |
|
39
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likely/unlikely, Fehlermeldungen in zyklischem Code begrenzt und Kommentare ge??ndert.
Florian Pose <fp@igh-essen.com>
parents:
34
diff
changeset
|
174 |
/*****************************************************************************/ |
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
175 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
176 |
/** |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
177 |
Loescht das EtherCAT-Geraet, auf dem der Master arbeitet. |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
178 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
179 |
@param master Der EtherCAT-Master |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
180 |
@param device Das EtherCAT-Geraet |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
181 |
*/ |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
182 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
183 |
void EtherCAT_unregister_device(int index, EtherCAT_device_t *device) |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
184 |
{ |
39
6965c23a6826
likely/unlikely, Fehlermeldungen in zyklischem Code begrenzt und Kommentare ge??ndert.
Florian Pose <fp@igh-essen.com>
parents:
34
diff
changeset
|
185 |
if (index < 0 || index >= ecat_master_count) { |
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
186 |
printk(KERN_WARNING "EtherCAT: Master %i does not exist!\n", index); |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
187 |
return; |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
188 |
} |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
189 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
190 |
EtherCAT_master_close(&ecat_masters[index], device); |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
191 |
} |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
192 |
|
39
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likely/unlikely, Fehlermeldungen in zyklischem Code begrenzt und Kommentare ge??ndert.
Florian Pose <fp@igh-essen.com>
parents:
34
diff
changeset
|
193 |
/*****************************************************************************/ |
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
194 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
195 |
/** |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
196 |
Reserviert einen bestimmten EtherCAT-Master und das zugehörige Gerät. |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
197 |
|
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
198 |
Gibt einen Zeiger auf den reservierten EtherCAT-Master zurueck. |
27
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
199 |
|
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
200 |
@param index Index des gewuenschten Masters |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
201 |
@returns Zeiger auf EtherCAT-Master oder NULL, wenn Parameter ungueltig. |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
202 |
*/ |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
203 |
|
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
204 |
EtherCAT_master_t *EtherCAT_request(int index) |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
205 |
{ |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
206 |
if (index < 0 || index >= ecat_master_count) { |
27
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
207 |
printk(KERN_ERR "EtherCAT: Master %i does not exist!\n", index); |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
208 |
return NULL; |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
209 |
} |
d75ef6b46e33
EtherCAT-Master in eigenes Modul ausgelagert.
Florian Pose <fp@igh-essen.com>
parents:
diff
changeset
|
210 |
|
33
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
211 |
if (ecat_masters_reserved[index]) { |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
212 |
printk(KERN_ERR "EtherCAT: Master %i already in use!\n", index); |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
213 |
return NULL; |
f4171b8aadf8
Master-Reservierung und Use-Count f?r NIC-Treiber.
Florian Pose <fp@igh-essen.com>
parents:
27
diff
changeset
|
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} |
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215 |
|
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if (!ecat_masters[index].dev) { |
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printk(KERN_ERR "EtherCAT: Master %i has no device assigned yet!\n", |
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index); |
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return NULL; |
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} |
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221 |
|
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if (!ecat_masters[index].dev->module) { |
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printk(KERN_ERR "EtherCAT: Master %i device module is not set!\n", index); |
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224 |
return NULL; |
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} |
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226 |
|
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if (!try_module_get(ecat_masters[index].dev->module)) { |
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printk(KERN_ERR "EtherCAT: Could not reserve device module!\n"); |
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229 |
return NULL; |
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230 |
} |
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231 |
|
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232 |
ecat_masters_reserved[index] = 1; |
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233 |
|
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printk(KERN_INFO "EtherCAT: Reserved master %i.\n", index); |
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235 |
|
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236 |
return &ecat_masters[index]; |
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237 |
} |
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|
238 |
|
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239 |
/*****************************************************************************/ |
33
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240 |
|
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241 |
/** |
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242 |
Gibt einen zuvor angeforderten EtherCAT-Master wieder frei. |
33
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|
243 |
|
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244 |
@param master Zeiger auf den freizugebenden EtherCAT-Master. |
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245 |
*/ |
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246 |
|
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247 |
void EtherCAT_release(EtherCAT_master_t *master) |
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248 |
{ |
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249 |
unsigned int i; |
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|
250 |
|
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251 |
for (i = 0; i < ecat_master_count; i++) |
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252 |
{ |
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253 |
if (&ecat_masters[i] == master) |
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|
254 |
{ |
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|
255 |
if (!ecat_masters[i].dev) { |
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|
256 |
printk(KERN_WARNING "EtherCAT: Could not release device" |
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|
257 |
"module because of no device!\n"); |
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|
258 |
return; |
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|
259 |
} |
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|
260 |
|
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|
261 |
module_put(ecat_masters[i].dev->module); |
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|
262 |
ecat_masters_reserved[i] = 0; |
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|
263 |
|
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|
264 |
printk(KERN_INFO "EtherCAT: Released master %i.\n", i); |
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|
265 |
|
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|
266 |
return; |
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|
267 |
} |
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|
268 |
} |
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|
269 |
|
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|
270 |
printk(KERN_WARNING "EtherCAT: Master %X was never requested!\n", |
33
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|
271 |
(unsigned int) master); |
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|
272 |
} |
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|
273 |
|
39
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parents:
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|
274 |
/*****************************************************************************/ |