s390/char/hmcdrv_mod.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  *    HMC Drive DVD Module
0004  *
0005  *    Copyright IBM Corp. 2013
0006  *    Author(s): Ralf Hoppe (rhoppe@de.ibm.com)
0007  */
0008
0009 #define KMSG_COMPONENT "hmcdrv"
0010 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
0011
0012 #include <linux/kernel.h>
0013 #include <linux/module.h>
0014 #include <linux/moduleparam.h>
0015 #include <linux/stat.h>
0016
0017 #include "hmcdrv_ftp.h"
0018 #include "hmcdrv_dev.h"
0019 #include "hmcdrv_cache.h"
0020
0021 MODULE_LICENSE("GPL");
0022 MODULE_AUTHOR("Copyright 2013 IBM Corporation");
0023 MODULE_DESCRIPTION("HMC drive DVD access");
0024
0025 /*
0026  * module parameter 'cachesize'
0027  */
0028 static size_t hmcdrv_mod_cachesize = HMCDRV_CACHE_SIZE_DFLT;
0029 module_param_named(cachesize, hmcdrv_mod_cachesize, ulong, S_IRUGO);
0030
0031 /**
0032  * hmcdrv_mod_init() - module init function
0033  */
0034 static int __init hmcdrv_mod_init(void)
0035 {
0036     int rc = hmcdrv_ftp_probe(); /* perform w/o cache */
0037
0038     if (rc)
0039         return rc;
0040
0041     rc = hmcdrv_cache_startup(hmcdrv_mod_cachesize);
0042
0043     if (rc)
0044         return rc;
0045
0046     rc = hmcdrv_dev_init();
0047
0048     if (rc)
0049         hmcdrv_cache_shutdown();
0050
0051     return rc;
0052 }
0053
0054 /**
0055  * hmcdrv_mod_exit() - module exit function
0056  */
0057 static void __exit hmcdrv_mod_exit(void)
0058 {
0059     hmcdrv_dev_exit();
0060     hmcdrv_cache_shutdown();
0061 }
0062
0063 module_init(hmcdrv_mod_init);
0064 module_exit(hmcdrv_mod_exit);