patch-2.3.21 linux/drivers/net/cycx_main.c

• Lines: 380
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.20/linux/drivers/net/cycx_main.c
• Orig date: Tue Aug 31 17:29:14 1999

diff -u --recursive --new-file v2.3.20/linux/drivers/net/cycx_main.c linux/drivers/net/cycx_main.c
@@ -1,379 +0,0 @@
-/*
-* cycx_main.c	Cyclades Cyclom X Multiprotocol WAN Link Driver. Main module.
-*
-* Author:	Arnaldo Carvalho de Melo <acme@conectiva.com.br>
-*
-* Copyright:	(c) 1998, 1999 Arnaldo Carvalho de Melo
-*
-* Based on sdlamain.c by Gene Kozin <genek@compuserve.com> &
-*			 Jaspreet Singh	<jaspreet@sangoma.com>
-*
-*		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.
-* ============================================================================
-* 1999/08/09	acme		removed references to enable_tx_int
-*				use spinlocks instead of cli/sti in
-*				cyclomx_set_state
-* 1999/05/19	acme		works directly linked into the kernel
-*				init_waitqueue_head for 2.3.* kernel
-* 1999/05/18	acme		major cleanup (polling not needed), etc
-* 1998/08/28	acme		minor cleanup (ioctls for firmware deleted)
-*				queue_task activated
-* 1998/08/08	acme		Initial version.
-*/
-
-#include <linux/config.h>	/* OS configuration options */
-#include <linux/stddef.h>	/* offsetof(), etc. */
-#include <linux/errno.h>	/* return codes */
-#include <linux/string.h>	/* inline memset(), etc. */
-#include <linux/malloc.h>	/* kmalloc(), kfree() */
-#include <linux/kernel.h>	/* printk(), and other useful stuff */
-#include <linux/module.h>	/* support for loadable modules */
-#include <linux/ioport.h>	/* request_region(), release_region() */
-#include <linux/tqueue.h>	/* for kernel task queues */
-#include <linux/wanrouter.h>	/* WAN router definitions */
-#include <linux/cyclomx.h>	/* cyclomx common user API definitions */
-#include <asm/uaccess.h>	/* kernel <-> user copy */
-#include <linux/init.h>         /* __init (when not using as a module) */
-
-#ifdef MODULE
-MODULE_AUTHOR("Arnaldo Carvalho de Melo");
-MODULE_DESCRIPTION("Cyclades Sync Cards Driver.");
-#endif
-
-/* Defines & Macros */
-
-#define	DRV_VERSION	0		/* version number */
-#define	DRV_RELEASE	4		/* release (minor version) number */
-#define	MAX_CARDS	1		/* max number of adapters */
-
-#ifndef	CONFIG_CYCLOMX_CARDS		/* configurable option */
-#define	CONFIG_CYCLOMX_CARDS 1
-#endif
-
-/* Function Prototypes */
-
-/* Module entry points */
-int init_module (void);
-void cleanup_module (void);
-
-/* WAN link driver entry points */
-static int setup (wan_device_t *wandev, wandev_conf_t *conf);
-static int shutdown (wan_device_t *wandev);
-static int ioctl (wan_device_t *wandev, unsigned cmd, unsigned long arg);
-
-/* Miscellaneous functions */
-static void cycx_isr (int irq, void *dev_id, struct pt_regs *regs);
-
-/* Global Data
- * Note: All data must be explicitly initialized!!!
- */
-
-/* private data */
-static char drvname[]	= "cyclomx";
-static char fullname[]	= "CYCLOM X(tm) Multiprotocol Driver";
-static char copyright[]	= "(c) 1998, 1999 Arnaldo Carvalho de Melo";
-static int ncards = CONFIG_CYCLOMX_CARDS;
-static cycx_t *card_array = NULL;	/* adapter data space */
-
-/* Kernel Loadable Module Entry Points */
-
-/*
- * Module 'insert' entry point.
- * o print announcement
- * o allocate adapter data space
- * o initialize static data
- * o register all cards with WAN router
- * o calibrate CYCX shared memory access delay.
- *
- * Return:	0	Ok
- *		< 0	error.
- * Context:	process
- */
-#ifdef MODULE
-int init_module (void)
-#else
-int __init cyclomx_init (void)
-#endif
-{
-	int cnt, err = 0;
-
-	printk(KERN_INFO "%s v%u.%u %s\n",
-		fullname, DRV_VERSION, DRV_RELEASE, copyright);
-
-	/* Verify number of cards and allocate adapter data space */
-	ncards = min(ncards, MAX_CARDS);
-	ncards = max(ncards, 1);
-	card_array = kmalloc(sizeof(cycx_t) * ncards, GFP_KERNEL);
-
-	if (card_array == NULL) return -ENOMEM;
-
-	memset(card_array, 0, sizeof(cycx_t) * ncards);
-
-	/* Register adapters with WAN router */
-	for (cnt = 0; cnt < ncards; ++cnt) {
-		cycx_t *card = &card_array[cnt];
-		wan_device_t *wandev = &card->wandev;
-
-		sprintf(card->devname, "%s%d", drvname, cnt + 1);
-		wandev->magic    = ROUTER_MAGIC;
-		wandev->name     = card->devname;
-		wandev->private  = card;
-		wandev->setup    = &setup;
-		wandev->shutdown = &shutdown;
-		wandev->ioctl    = &ioctl;
-		err = register_wan_device(wandev);
-
-		if (err) {
-			printk(KERN_ERR
-				"%s: %s registration failed with error %d!\n",
-				drvname, card->devname, err);
-			break;
-		}
-	}
-
-	if (cnt) ncards = cnt;	/* adjust actual number of cards */
-	else {
-		kfree(card_array);
-		err = -ENODEV;
-	}
-
-	return err;
-}
-
-/*
- * Module 'remove' entry point.
- * o unregister all adapters from the WAN router
- * o release all remaining system resources
- */
-#ifdef MODULE
-void cleanup_module (void)
-{
-	int i = 0;
-
-	for (; i < ncards; ++i) {
-		cycx_t *card = &card_array[i];
-		unregister_wan_device(card->devname);
-	}
-
-	kfree(card_array);
-}
-#endif
-/* WAN Device Driver Entry Points */
-/*
- * Setup/confugure WAN link driver.
- * o check adapter state
- * o make sure firmware is present in configuration
- * o allocate interrupt vector
- * o setup CYCLOM X hardware
- * o call appropriate routine to perform protocol-specific initialization
- * o mark I/O region as used
- *
- * This function is called when router handles ROUTER_SETUP IOCTL. The
- * configuration structure is in kernel memory (including extended data, if
- * any).
- */
-static int setup (wan_device_t *wandev, wandev_conf_t *conf)
-{
-	cycx_t *card;
-	int err = 0;
-	int irq;
-
-	/* Sanity checks */
-	if (!wandev || !wandev->private || !conf) return -EFAULT;
-
-	card = wandev->private;
-
-	if (wandev->state != WAN_UNCONFIGURED) return -EBUSY;
-
-	if (!conf->data_size || (conf->data == NULL)) {
-		printk(KERN_ERR "%s: firmware not found in configuration "
-				"data!\n", wandev->name);
-		return -EINVAL;
-	}
-
-	if (conf->irq <= 0) {
-		printk(KERN_ERR "%s: can't configure without IRQ!\n",
-				wandev->name);
-		return -EINVAL;
-	}
-
-	/* Allocate IRQ */
-	irq = conf->irq == 2 ? 9 : conf->irq;	/* IRQ2 -> IRQ9 */
-
-	if (request_irq(irq, cycx_isr, 0, wandev->name, card)) {
-		printk(KERN_ERR "%s: can't reserve IRQ %d!\n",
-				wandev->name, irq);
-		return -EINVAL;
-	}
-
-	/* Configure hardware, load firmware, etc. */
-	memset(&card->hw, 0, sizeof(cycxhw_t));
-	card->hw.irq = (conf->irq == 9) ? 2 : conf->irq;
-	card->hw.dpmbase = conf->maddr;
-	card->hw.dpmsize = CYCX_WINDOWSIZE;
-	card->hw.type = conf->hw_opt[0];
-	card->hw.fwid = CFID_X25_2X;
-	card->lock = SPIN_LOCK_UNLOCKED;
-#if LINUX_VERSION_CODE >= 0x020300
-	init_waitqueue_head(&card->wait_stats);
-#else
-	card->wait_stats = NULL;
-#endif
-	err = cycx_setup(&card->hw, conf->data, conf->data_size);
-
-	if (err) {
-		free_irq(irq, card);
-		return err;
-	}
-
-	/* Intialize WAN device data space */
-	wandev->irq       = irq;
-	wandev->dma       = wandev->ioport = 0;
-	wandev->maddr     = (unsigned long*)card->hw.dpmbase;
-	wandev->msize     = card->hw.dpmsize;
-	wandev->hw_opt[0] = card->hw.type;
-	wandev->hw_opt[1] = card->hw.pclk;
-	wandev->hw_opt[2] = card->hw.memory;
-	wandev->hw_opt[3] = card->hw.fwid;
-
-	/* Protocol-specific initialization */
-	switch (card->hw.fwid) {
-#ifdef CONFIG_CYCLOMX_X25
-		case CFID_X25_2X: err = cyx_init(card, conf); break;
-#endif
-		default:
-			printk(KERN_ERR "%s: this firmware is not supported!\n",
-					wandev->name);
-			err = -EINVAL;
-	}
-
-	if (err) {
-		cycx_down(&card->hw);
-		free_irq(irq, card);
-		return err;
-	}
-
-	return 0;
-}
-
-/*
- * Shut down WAN link driver. 
- * o shut down adapter hardware
- * o release system resources.
- *
- * This function is called by the router when device is being unregistered or
- * when it handles ROUTER_DOWN IOCTL.
- */
-static int shutdown (wan_device_t *wandev)
-{
-	cycx_t *card;
-
-	/* sanity checks */
-	if (!wandev || !wandev->private) return -EFAULT;
-
-	if (wandev->state == WAN_UNCONFIGURED) return 0;
-
-	card = wandev->private;
-	wandev->state = WAN_UNCONFIGURED;
-	cycx_down(&card->hw);
-	printk(KERN_INFO "%s: irq %d being freed!\n", wandev->name,wandev->irq);
-	free_irq(wandev->irq, card);
-	return 0;
-}
-
-/*
- * Driver I/O control. 
- * o verify arguments
- * o perform requested action
- *
- * This function is called when router handles one of the reserved user
- * IOCTLs.  Note that 'arg' stil points to user address space.
- */
-static int ioctl (wan_device_t *wandev, unsigned cmd, unsigned long arg)
-{
-	return -EINVAL;
-}
-
-/* Miscellaneous */
-/*
- * CYCX Interrupt Service Routine.
- * o acknowledge CYCX hardware interrupt.
- * o call protocol-specific interrupt service routine, if any.
- */
-static void cycx_isr (int irq, void *dev_id, struct pt_regs *regs)
-{
-#define	card	((cycx_t*)dev_id)
-	if (!card || card->wandev.state == WAN_UNCONFIGURED)
-		return;
-
-	if (card->in_isr) {
-		printk(KERN_WARNING "%s: interrupt re-entrancy on IRQ %d!\n",
-				    card->devname, card->wandev.irq);
-		return;
-	}
-
-	if (card->isr)
-		card->isr(card);
-#undef	card
-}
-
-/*
- * This routine is called by the protocol-specific modules when network
- * interface is being open.  The only reason we need this, is because we
- * have to call MOD_INC_USE_COUNT, but cannot include 'module.h' where it's
- * defined more than once into the same kernel module.
- */
-void cyclomx_open (cycx_t *card)
-{
-	++card->open_cnt;
-	MOD_INC_USE_COUNT;
-}
-
-/*
- * This routine is called by the protocol-specific modules when network
- * interface is being closed.  The only reason we need this, is because we
- * have to call MOD_DEC_USE_COUNT, but cannot include 'module.h' where it's
- * defined more than once into the same kernel module.
- */
-void cyclomx_close (cycx_t *card)
-{
-	--card->open_cnt;
-	MOD_DEC_USE_COUNT;
-}
-
-/* Set WAN device state.  */
-void cyclomx_set_state (cycx_t *card, int state)
-{
-	unsigned long host_cpu_flags;
-
-	spin_lock_irqsave(&card->lock, host_cpu_flags);
-
-	if (card->wandev.state != state) {
-		switch (state) {
-			case WAN_CONNECTED:
-				printk (KERN_INFO "%s: link connected!\n",
-						  card->devname);
-				break;
-
-			case WAN_CONNECTING:
-				printk (KERN_INFO "%s: link connecting...\n",
-						  card->devname);
-				break;
-
-			case WAN_DISCONNECTED:
-				printk (KERN_INFO "%s: link disconnected!\n",
-						  card->devname);
-				break;
-		}
-
-		card->wandev.state = state;
-	}
-
-	card->state_tick = jiffies;
-	spin_unlock_irqrestore(&card->lock, host_cpu_flags);
-}
-
-/* End */