patch-2.3.31 linux/drivers/net/pcmcia/aironet4500_cs.c

• Lines: 642
• Date: Tue Dec 7 23:58:22 1999
• Orig file: v2.3.30/linux/drivers/net/pcmcia/aironet4500_cs.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.30/linux/drivers/net/pcmcia/aironet4500_cs.c linux/drivers/net/pcmcia/aironet4500_cs.c
@@ -0,0 +1,640 @@
+/*
+ *	 Aironet 4500 Pcmcia driver
+ *
+ *		Elmer Joandi, Januar 1999
+ *	Copyright Elmer Joandi, all rights restricted
+ *	
+ *
+ *	Revision 0.1 ,started  30.12.1998
+ *
+ *
+ */
+
+static const char *awc_version =
+"aironet4500_cs.c v0.1 1/1/99 Elmer Joandi, elmer@ylenurme.ee.\n";
+
+
+#include <linux/module.h>
+//#include <pcmcia/config.h>
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <linux/malloc.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/in.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/bitops.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/ioport.h>
+
+
+#include <pcmcia/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ciscode.h>
+#if LINUX_VERSION_CODE < 0x20300
+#ifdef MODULE
+#include <pcmcia/k_compat.h>
+#endif
+#endif
+#include <pcmcia/ds.h>
+
+#include "../aironet4500.h"
+
+
+static u_int irq_mask = 0x5eF8;
+static int 	awc_ports[] = {0x140,0x100,0xc0, 0x80 };
+#if LINUX_VERSION_CODE > 0x20100
+MODULE_PARM(irq_mask, "i");
+
+#endif
+
+
+#define RUN_AT(x)               (jiffies+(x))
+
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+MODULE_PARM(pc_debug, "i");
+#define PC_DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version =
+"aironet4500_cs.c v0.1 1/1/99 Elmer Joandi, elmer@ylenurme.ee.\n";
+#else
+#define PC_DEBUG(n, args...)
+#endif
+
+/* Index of functions. */
+
+static dev_info_t dev_info = "aironet4500_cs";
+
+static dev_link_t *awc_attach(void);
+static void awc_detach(dev_link_t *);
+static void awc_release(u_long arg);
+static int awc_event(event_t event, int priority,
+					   event_callback_args_t *args);
+
+static dev_link_t *dev_list = NULL;
+
+static void cs_error(client_handle_t handle, int func, int ret)
+{
+#if CS_RELEASE_CODE < 0x2911
+    CardServices(ReportError, dev_info, (void *)func, (void *)ret);
+#else
+	error_info_t err = { func, ret };
+	CardServices(ReportError, handle, &err);
+#endif
+}
+
+#define CFG_CHECK(fn, args...) if (CardServices(fn, args) != 0) goto next_entry
+
+static void flush_stale_links(void)
+{
+    dev_link_t *link, *next;
+    for (link = dev_list; link; link = next) {
+	next = link->next;
+	if (link->state & DEV_STALE_LINK)
+	    awc_detach(link);
+    }
+}
+
+
+/*
+   We never need to do anything when a awc device is "initialized"
+   by the net software, because we only register already-found cards.
+*/
+
+static int awc_pcmcia_init(struct NET_DEVICE *dev)
+{
+	return awc_init(dev);
+
+}
+
+static int awc_pcmcia_open(struct NET_DEVICE *dev)
+{
+	dev_link_t *link;
+	int status;
+	
+	for (link = dev_list; link; link = link->next)
+		if (link->priv == dev) break;
+	if (!DEV_OK(link))
+		return -ENODEV;
+	
+	status = awc_open(dev);
+	
+	if (!status )
+		link->open++;
+	
+	return status;
+}
+
+static int awc_pcmcia_close(struct NET_DEVICE *dev)
+{
+//	int ioaddr = dev->base_addr;
+	dev_link_t *link;
+	int ret;
+	
+	for (link = dev_list; link; link = link->next)
+		if (link->priv == dev) break;
+	if (link == NULL)
+		return -ENODEV;
+
+	PC_DEBUG(2, "%s: closing device.\n", dev->name);
+
+	link->open--;
+	ret = awc_close(dev);
+	
+	if (link->state & DEV_STALE_CONFIG) {
+		link->release.expires = RUN_AT( HZ/20 );
+		link->state |= DEV_RELEASE_PENDING;
+		add_timer(&link->release);
+	}
+	return ret;
+}
+
+/*
+	awc_attach() creates an "instance" of the driver, allocating
+	local data structures for one device.  The device is registered
+	with Card Services.
+*/
+
+static dev_link_t *awc_attach(void)
+{
+	client_reg_t client_reg;
+	dev_link_t *link = NULL;
+	struct NET_DEVICE *dev = NULL;
+	int  ret;
+
+	PC_DEBUG(0, "awc_attach()\n");
+	flush_stale_links();
+
+	/* Create the PC card device object. */
+	link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
+	memset(link, 0, sizeof(struct dev_link_t));
+	link->dev = kmalloc(sizeof(struct dev_node_t), GFP_KERNEL);
+	memset(link->dev, 0, sizeof(struct dev_node_t));
+
+	link->release.function = &awc_release;
+	link->release.data = (u_long)link;
+//	link->io.NumPorts1 = 32;
+	link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+//	link->io.IOAddrLines = 5;
+	link->irq.Attributes = IRQ_HANDLE_PRESENT ; // |IRQ_TYPE_EXCLUSIVE  ;
+	link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
+	link->irq.IRQInfo2 = irq_mask;
+	link->irq.Handler = &awc_interrupt;
+	link->conf.Attributes = CONF_ENABLE_IRQ;
+	link->conf.Vcc = 50;
+	link->conf.IntType = INT_MEMORY_AND_IO;
+	link->conf.ConfigIndex = 1;
+	link->conf.Present = PRESENT_OPTION;
+
+	/* Create the network device object. */
+
+	dev = kmalloc(sizeof(struct NET_DEVICE ), GFP_KERNEL);
+	memset(dev,0,sizeof(struct NET_DEVICE));
+//	dev =  init_etherdev(0, sizeof(struct awc_private) );
+	if (!dev ) {
+		printk(KERN_CRIT "out of mem on dev alloc \n");
+		kfree(link->dev);
+		kfree(link);
+		return NULL;
+	};
+	dev->priv = kmalloc(sizeof(struct awc_private), GFP_KERNEL);
+	if (!dev->priv ) {printk(KERN_CRIT "out of mem on dev priv alloc \n"); return NULL;};
+	memset(dev->priv,0,sizeof(struct awc_private));
+	
+//	link->dev->minor = dev->minor;
+//	link->dev->major = dev->major;
+
+	/* The 4500-specific entries in the device structure. */
+
+//	dev->tx_queue_len = tx_queue_len;
+
+	dev->hard_start_xmit = 		&awc_start_xmit;
+//	dev->set_config = 		&awc_config_misiganes,aga mitte awc_config;
+	dev->get_stats = 		&awc_get_stats;
+//	dev->set_multicast_list = 	&awc_set_multicast_list;
+
+	ether_setup(dev);
+
+	dev->name = ((struct awc_private *)dev->priv)->node.dev_name;
+
+	dev->init = &awc_pcmcia_init;
+	dev->open = &awc_pcmcia_open;
+	dev->stop = &awc_pcmcia_close;
+	dev->tbusy = 1;
+	dev->start  = 0;
+	
+	link->priv = dev;
+#if CS_RELEASE_CODE > 0x2911
+	link->irq.Instance = dev;
+#endif
+
+	/* Register with Card Services */
+	link->next = dev_list;
+	dev_list = link;
+	
+        
+	client_reg.dev_info = &dev_info;
+	client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
+	client_reg.EventMask =
+		CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
+			CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
+				CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
+	client_reg.event_handler = &awc_event;
+	client_reg.Version = 0x0210;
+	client_reg.event_callback_args.client_data = link;
+	ret = CardServices(RegisterClient, &link->handle, &client_reg);
+	if (ret != 0) {
+		cs_error(link->handle, RegisterClient, ret);
+		awc_detach(link);
+		return NULL;
+	}
+
+	return link;
+} /* awc_attach */
+
+/*
+
+	This deletes a driver "instance".  The device is de-registered
+	with Card Services.  If it has been released, all local data
+	structures are freed.  Otherwise, the structures will be freed
+	when the device is released.
+
+*/
+
+static void awc_detach(dev_link_t *link)
+{
+	dev_link_t **linkp;
+	long flags;
+	int i=0;
+
+	DEBUG(0, "awc_detach(0x%p)\n", link);
+
+	/* Locate device structure */
+	for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+		if (*linkp == link) break;
+	if (*linkp == NULL)
+	return;
+
+	save_flags(flags);
+	cli();
+	if (link->state & DEV_RELEASE_PENDING) {
+		del_timer(&link->release);
+		link->state &= ~DEV_RELEASE_PENDING;
+	}
+	restore_flags(flags);
+
+	if (link->state & DEV_CONFIG) {
+		awc_release((u_long)link);
+		if (link->state & DEV_STALE_CONFIG) {
+			link->state |= DEV_STALE_LINK;
+			return;
+		}
+	}
+
+	if (link->handle)
+		CardServices(DeregisterClient, link->handle);
+
+	/* Unlink device structure, free bits */
+	*linkp = link->next;
+
+	i=0;
+	while ( i < MAX_AWCS) {
+		if (!aironet4500_devices[i])
+			{i++; continue;}
+		if (aironet4500_devices[i] == link->priv){
+			if (awc_proc_unset_fun)
+				awc_proc_unset_fun(i);
+
+			aironet4500_devices[i]=0;
+		}
+		i++;
+	}
+	
+	if (link->priv) {
+		//struct NET_DEVICE *dev = link->priv;
+		// dam dam damn mif (dev->priv)
+		//	kfree_s(dev->priv, sizeof(struct awc_private));
+		kfree_s(link->priv, sizeof(struct NET_DEVICE));
+	}
+	kfree_s(link->dev, sizeof(struct dev_node_t));
+	kfree_s(link, sizeof(struct dev_link_t));
+
+} /* awc_detach */
+
+/*
+
+	awc_pcmcia_config() is scheduled to run after a CARD_INSERTION event
+	is received, to configure the PCMCIA socket, and to make the
+	ethernet device available to the system.
+
+*/
+
+#define CS_CHECK(fn, args...) \
+while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
+
+static void awc_pcmcia_config(dev_link_t *link)
+{
+	client_handle_t handle;
+	struct NET_DEVICE *dev;
+	struct awc_private *lp;
+	tuple_t tuple;
+	int ii;
+	cisparse_t parse;
+	u_short buf[64];
+	int last_fn, last_ret, i = 0;
+//	int ioaddr;
+	u16 *phys_addr;
+	int retval;
+	
+	handle = link->handle;
+	dev = link->priv;
+	phys_addr = (u16 *)dev->dev_addr;
+
+	PC_DEBUG(0, "awc_pcmcia_config(0x%p)\n", link);
+
+	tuple.Attributes = 0;
+	tuple.DesiredTuple = CISTPL_CONFIG;
+	CS_CHECK(GetFirstTuple, handle, &tuple);
+	tuple.TupleData = (cisdata_t *)buf;
+	tuple.TupleDataMax = 64;
+	tuple.TupleOffset = 0;
+	CS_CHECK(GetTupleData, handle, &tuple);
+	CS_CHECK(ParseTuple, handle, &tuple, &parse);
+	link->conf.ConfigBase = parse.config.base;
+	link->conf.Present = parse.config.rmask[0];
+
+
+	/* Configure card */
+	link->state |= DEV_CONFIG;
+
+     	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+        CS_CHECK(GetFirstTuple, handle, &tuple);
+
+    	while (1) {
+		cistpl_cftable_entry_t dflt = { 0 };
+		cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
+		CFG_CHECK(GetTupleData, handle, &tuple);
+		CFG_CHECK(ParseTuple, handle, &tuple, &parse);
+
+		if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
+		if (cfg->index == 0) goto next_entry;
+		link->conf.ConfigIndex = cfg->index;
+
+		/* Use power settings for Vcc and Vpp if present */
+		/*  Note that the CIS values need to be rescaled */
+		if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM))
+		    link->conf.Vcc = cfg->vcc.param[CISTPL_POWER_VNOM]/10000;
+		else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM))
+		    link->conf.Vcc = dflt.vcc.param[CISTPL_POWER_VNOM]/10000;
+	    
+		if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
+		    link->conf.Vpp1 = link->conf.Vpp2 =
+			cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
+		else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
+		    link->conf.Vpp1 = link->conf.Vpp2 =
+			dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
+	
+		/* Do we need to allocate an interrupt? */
+		if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
+		    link->conf.Attributes |= CONF_ENABLE_IRQ;
+	
+		/* IO window settings */
+		link->io.NumPorts1 = link->io.NumPorts2 = 0;
+		if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
+	    		cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
+	    		link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+	    		if (!(io->flags & CISTPL_IO_8BIT))
+				link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+	    		if (!(io->flags & CISTPL_IO_16BIT)) {
+	    			
+				link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+				printk(KERN_CRIT "8-bit IO not supported on this aironet 4500 driver \n");
+	    		}
+	    		link->io.BasePort1 = io->win[0].base;
+	    		
+	    		link->io.NumPorts1 = io->win[0].len;
+	    		if (io->nwin > 1) {
+				link->io.Attributes2 = link->io.Attributes1;
+				link->io.BasePort2 = io->win[1].base;
+				link->io.NumPorts2 = io->win[1].len;
+	    		}
+		}
+		ii = 0;
+		last_fn = RequestIO;
+		while ((last_ret = CardServices(RequestIO, link->handle, &link->io)) ){
+		
+			if (ii > 4) 
+				goto cs_failed;
+			link->io.BasePort1 = awc_ports[ii];
+			ii++;
+		};
+
+
+		break;
+	
+    	next_entry:
+		if (CardServices(GetNextTuple, handle, &tuple))
+			break;
+    	}
+    
+    	if (link->conf.Attributes & CONF_ENABLE_IRQ){
+	
+		ii = 0;  last_fn = RequestIRQ; 
+		while ((last_ret  = CardServices(RequestIRQ, link->handle, &link->irq)) ){
+		
+			ii++;	
+			while (!(irq_mask & (1 << ii) ) && ii < 15)
+			 	ii++;
+			link->irq.IRQInfo2 = 1 << ii;
+
+			if(ii > 15)
+				goto cs_failed;
+			printk("trying irq %d , mask %x \n",ii, link->irq.IRQInfo2); 
+			 
+		};
+	}
+
+    	CS_CHECK(RequestConfiguration, link->handle, &link->conf);
+
+
+    	dev->irq = link->irq.AssignedIRQ;
+    	dev->base_addr = link->io.BasePort1;
+
+
+	awc_private_init( dev);
+
+
+	
+	retval = register_netdev(dev);
+	if (retval != 0) {
+		printk(KERN_NOTICE "awc_cs: register_netdev() failed for dev %x retval %x\n",(unsigned int)dev,retval);
+		goto failed;
+	}
+
+    	if(awc_pcmcia_init(dev)) goto failed;
+
+	i=0;
+	while (aironet4500_devices[i] && i < MAX_AWCS-1) i++;
+	if (!aironet4500_devices[i]){
+		aironet4500_devices[i]=dev;
+		if (awc_proc_set_fun)
+			awc_proc_set_fun(i);
+	}
+	
+
+	link->state &= ~DEV_CONFIG_PENDING;
+
+	lp = (struct awc_private *)dev->priv;
+
+	DEBUG(1,"pcmcia config complete on port %x \n",(unsigned int)dev->base_addr);
+
+	return;
+
+cs_failed:
+	cs_error(link->handle, last_fn, last_ret);
+	link->dev=NULL;
+failed:
+
+	awc_release((u_long)link);
+	return;
+
+} /* awc_pcmcia_config */
+
+/*
+	After a card is removed, awc_release() will unregister the net
+	device, and release the PCMCIA configuration.  If the device is
+	still open, this will be postponed until it is closed.
+
+*/
+
+static void awc_release(u_long arg)
+{
+	dev_link_t *link = (dev_link_t *)arg;
+	struct NET_DEVICE *dev = link->priv;
+
+	DEBUG(0, "awc_release(0x%p)\n", link);
+
+	if (link->open) {
+		DEBUG(1, "awc_cs: release postponed, '%s' still open\n",
+			  link->dev->dev_name);
+		link->state |= DEV_STALE_CONFIG;
+		return;
+	}
+
+	CardServices(ReleaseConfiguration, link->handle);
+	CardServices(ReleaseIO, link->handle, &link->io);
+	CardServices(ReleaseIRQ, link->handle, &link->irq);
+
+	CardServices(ReleaseWindow, link->win);
+	if (link->dev)
+		unregister_netdev(dev);
+	// link->dev = NULL;
+
+	link->state &= ~DEV_CONFIG;
+	if (link->state & DEV_STALE_LINK)
+		awc_detach(link);
+
+} /* awc_release */
+
+/*
+
+	The card status event handler.  Mostly, this schedules other
+	stuff to run after an event is received.  A CARD_REMOVAL event
+	also sets some flags to discourage the net drivers from trying
+	to talk to the card any more.
+*/
+
+static int awc_event(event_t event, int priority,
+					   event_callback_args_t *args)
+{
+	dev_link_t *link = args->client_data;
+	struct NET_DEVICE *dev = link->priv;
+
+	PC_DEBUG(1, "awc_event(0x%06x)\n", event);
+
+	switch (event) {
+	case CS_EVENT_CARD_REMOVAL:
+		link->state &= ~DEV_PRESENT;
+		if (link->state & DEV_CONFIG) {
+			dev->tbusy = 1; dev->start = 0;
+			link->release.expires = RUN_AT( HZ/20 );
+			add_timer(&link->release);
+		}
+		break;
+	case CS_EVENT_CARD_INSERTION:
+		link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+		awc_pcmcia_config(link);
+		break;
+	case CS_EVENT_PM_SUSPEND:
+		link->state |= DEV_SUSPEND;
+		/* Fall through... */
+	case CS_EVENT_RESET_PHYSICAL:
+		if (link->state & DEV_CONFIG) {
+			if (link->open) {
+				dev->tbusy = 1; dev->start = 0;
+			}
+			CardServices(ReleaseConfiguration, link->handle);
+		}
+		break;
+	case CS_EVENT_PM_RESUME:
+		link->state &= ~DEV_SUSPEND;
+		/* Fall through... */
+	case CS_EVENT_CARD_RESET:
+		if (link->state & DEV_CONFIG) {
+			CardServices(RequestConfiguration, link->handle, &link->conf);
+			if (link->open) {
+				// awc_reset(dev);
+				dev->tbusy = 0; dev->start = 1;
+			}
+		}
+		break;
+	}
+	return 0;
+} /* awc_event */
+
+
+        
+int init_module(void)
+{
+	servinfo_t serv;
+
+	/* Always emit the version, before any failure. */
+	printk(KERN_INFO"%s", awc_version);
+	PC_DEBUG(0, "%s\n", version);
+	CardServices(GetCardServicesInfo, &serv);
+	if (serv.Revision != CS_RELEASE_CODE) {
+		printk(KERN_NOTICE "awc_cs: Card Services release "
+			   "does not match!\n");
+		return -1;
+	}
+	register_pcmcia_driver(&dev_info, &awc_attach, &awc_detach);
+	return 0;
+}
+
+void cleanup_module(void)
+{
+	DEBUG(0, "awc_cs: unloading %c ",'\n');
+	unregister_pcmcia_driver(&dev_info);
+	
+	while (dev_list != NULL) {
+		if (dev_list->state & DEV_CONFIG)
+			awc_release((u_long)dev_list);
+		awc_detach(dev_list);
+	}
+	        
+//	while (dev_list != NULL)
+//		awc_detach(dev_list);
+}
+
+        
\ No newline at end of file