The first enhanced version of Linux CAN-bus driver for OCERA project

[lincan.git] / lincan / src / main.c

diff --git a/lincan/src/main.c b/lincan/src/main.c
index 4ff1523c44f9ebb7400eb81f428710d79734f205..f21e78fe437daa581109eb4de1af882c3b1369c5 100644 (file)
--- a/lincan/src/main.c
+++ b/lincan/src/main.c
@@ -22,10 +22,12 @@
 #include <linux/fs.h>
 #include <linux/wrapper.h>
 #include <linux/sched.h>
+#include <linux/poll.h>
 #include <linux/version.h>
 #include <linux/autoconf.h>
+#include <linux/interrupt.h>
 
-#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,2,19))
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,0))
 #include <asm/spinlock.h>
 #else
 #include <linux/spinlock.h>
@@ -34,10 +36,14 @@
 #if !defined (__GENKSYMS__) 
 #if (defined (MODVERSIONS) && !defined(NOVER))
 #include <linux/modversions.h>
-#include "../include/main.ver"
+/*#include "../include/main.ver"*/
 #endif
 #endif
 
+#ifdef CONFIG_DEVFS_FS
+#include <linux/miscdevice.h>
+#endif
+
 #include "../include/main.h"
 #include "../include/modparms.h"
 #include "../include/setup.h"
@@ -45,6 +51,7 @@
 #include "../include/open.h"
 #include "../include/close.h"
 #include "../include/read.h"
+#include "../include/select.h"
 #include "../include/irq.h"
 #include "../include/ioctl.h"
 #include "../include/write.h"
@@ -55,7 +62,8 @@
 int major=CAN_MAJOR;
 MODULE_PARM(major,"1i");
 int minor[MAX_TOT_CHIPS]={-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1};
-MODULE_PARM(minor, "1-" __MODULE_STRING(MAX_TOT_CHIPS)"i");
+/*MODULE_PARM(minor, "1-" __MODULE_STRING(MAX_TOT_CHIPS)"i");*/
+MODULE_PARM(minor, "1-" __MODULE_STRING(MAX_TOT_CHIPS_STR)"i");
 int extended=0;
 MODULE_PARM(extended,"1i");
 int pelican=0;
@@ -75,26 +83,40 @@ MODULE_PARM(extmask, "1i");
 int mo15mask=0;
 MODULE_PARM(mo15mask, "1i");
 
+/* Other module attributes */
+#ifdef MODULE_SUPPORTED_DEVICE
+MODULE_SUPPORTED_DEVICE("can");
+#endif
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
+#ifdef MODULE_DESCRIPTION
+MODULE_DESCRIPTION("Universal Linux CAN-bus device driver");
+#endif
+
 /* Global structures, used to describe the installed hardware. */
 struct canhardware_t canhardware;
 struct canhardware_t *hardware_p=&canhardware;
 struct candevice_t *candevices_p[MAX_HW_CARDS];
 struct chip_t *chips_p[MAX_TOT_CHIPS];
 struct msgobj_t *objects_p[MAX_TOT_MSGOBJS];
+#ifdef CONFIG_DEVFS_FS
+devfs_handle_t  devfs_handles[MAX_TOT_MSGOBJS];
+#endif
 
 /* Pointers to dynamically allocated memory are maintained in a linked list
  * to ease memory deallocation.
  */
 struct mem_addr *mem_head=NULL;
 
-#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,2,19))
+#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,0))
 struct file_operations can_fops=
 {
        NULL,                           /* llseek */
        read:           can_read,
        write:          can_write,
        NULL,                           /* readdir */
-       NULL,                           /* poll */
+       poll:           can_poll,
        ioctl:          can_ioctl,
        NULL,                           /* mmap */
        open:           can_open,
@@ -108,6 +130,7 @@ struct file_operations can_fops=
        owner:          THIS_MODULE,    
        read:           can_read,
        write:          can_write,
+       poll:           can_poll,
        ioctl:          can_ioctl,
        open:           can_open,
        release:        can_close,
@@ -146,6 +169,9 @@ int init_module(void)
                        goto reset_error;
        }
 
+       spin_lock_init(&hardware_p->rtr_lock);
+       hardware_p->rtr_queue=NULL;
+
        i=0;
        while ( (chips_p[i] != NULL) && (i < MAX_TOT_CHIPS) ) {
                if (!strcmp(chips_p[i]->chip_type,"i82527")) {
@@ -171,14 +197,26 @@ int init_module(void)
                                goto interrupt_error;
        }
 
-       spin_lock_init(&hardware_p->rtr_lock);
-       hardware_p->rtr_queue=NULL;
-
 #ifdef CONFIG_PROC_FS
        if (can_init_procdir())
                goto proc_error;
 #endif
 
+#ifdef CONFIG_DEVFS_FS
+        {
+               char dev_name[32];
+               int dev_minor;
+               for(i=0;i<MAX_TOT_MSGOBJS;i++) {
+                       if(!objects_p[i]) continue;
+                       dev_minor=objects_p[i]->minor;
+                       sprintf (dev_name, "can%d", dev_minor);
+                       devfs_handles[i]=devfs_register(NULL, dev_name,
+                               DEVFS_FL_DEFAULT, major, dev_minor,
+                               S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP,
+                               &can_fops, (void*)objects_p[i]);
+               }
+        }
+#endif
        return 0;
 
 #ifdef CONFIG_PROC_FS
@@ -218,6 +256,13 @@ void cleanup_module(void)
                CANMSG("Error unregistering /proc/can entry.\n"); 
 #endif
 
+#ifdef CONFIG_DEVFS_FS
+               for(i=0;i<MAX_TOT_MSGOBJS;i++) {
+                       if(devfs_handles[i])
+                               devfs_unregister(devfs_handles[i]);
+               }
+#endif
+        i=0;
        while ( (chips_p[i] != NULL) & (i < MAX_TOT_CHIPS) ) {
                free_irq(chips_p[i]->chip_irq, chips_p[i]);
                i++;