1 /*======================================================================
3 A PCMCIA token-ring driver for IBM-based cards
5 This driver supports the IBM PCMCIA Token-Ring Card.
6 Written by Steve Kipisz, kipisz@vnet.ibm.com or
11 This code is based on pcnet_cs.c from David Hinds.
13 V2.2.0 February 1999 - Mike Phillips phillim@amtrak.com
15 Linux V2.2.x presented significant changes to the underlying
16 ibmtr.c code. Mainly the code became a lot more organized and
19 This caused the old PCMCIA Token Ring driver to give up and go
20 home early. Instead of just patching the old code to make it
21 work, the PCMCIA code has been streamlined, updated and possibly
24 This code now only contains code required for the Card Services.
25 All we do here is set the card up enough so that the real ibmtr.c
26 driver can find it and work with it properly.
28 i.e. We set up the io port, irq, mmio memory and shared ram
29 memory. This enables ibmtr_probe in ibmtr.c to find the card and
30 configure it as though it was a normal ISA and/or PnP card.
34 v2.2.5 April 1999 Mike Phillips (phillim@amtrak.com)
35 Obscure bug fix, required changed to ibmtr.c not ibmtr_cs.c
37 v2.2.7 May 1999 Mike Phillips (phillim@amtrak.com)
38 Updated to version 2.2.7 to match the first version of the kernel
39 that the modification to ibmtr.c were incorporated into.
41 v2.2.17 July 2000 Burt Silverman (burts@us.ibm.com)
42 Address translation feature of PCMCIA controller is usable so
43 memory windows can be placed in High memory (meaning above
46 ======================================================================*/
48 #include <linux/kernel.h>
49 #include <linux/init.h>
50 #include <linux/ptrace.h>
51 #include <linux/slab.h>
52 #include <linux/string.h>
53 #include <linux/timer.h>
54 #include <linux/module.h>
55 #include <linux/ethtool.h>
56 #include <linux/netdevice.h>
57 #include <linux/trdevice.h>
58 #include <linux/ibmtr.h>
60 #include <pcmcia/cs_types.h>
61 #include <pcmcia/cs.h>
62 #include <pcmcia/cistpl.h>
63 #include <pcmcia/ds.h>
65 #include <asm/uaccess.h>
67 #include <asm/system.h>
70 #include "../tokenring/ibmtr.c"
73 static int pc_debug = PCMCIA_DEBUG;
74 module_param(pc_debug, int, 0);
75 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
76 static char *version =
77 "ibmtr_cs.c 1.10 1996/01/06 05:19:00 (Steve Kipisz)\n"
78 " 2.2.7 1999/05/03 12:00:00 (Mike Phillips)\n"
79 " 2.4.2 2001/30/28 Midnight (Burt Silverman)\n";
81 #define DEBUG(n, args...)
84 /*====================================================================*/
86 /* Parameters that can be set with 'insmod' */
88 /* MMIO base address */
89 static u_long mmiobase = 0xce000;
91 /* SRAM base address */
92 static u_long srambase = 0xd0000;
94 /* SRAM size 8,16,32,64 */
95 static u_long sramsize = 64;
98 static int ringspeed = 16;
100 module_param(mmiobase, ulong, 0);
101 module_param(srambase, ulong, 0);
102 module_param(sramsize, ulong, 0);
103 module_param(ringspeed, int, 0);
104 MODULE_LICENSE("GPL");
106 /*====================================================================*/
108 static void ibmtr_config(dev_link_t *link);
109 static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase);
110 static void ibmtr_release(dev_link_t *link);
111 static int ibmtr_event(event_t event, int priority,
112 event_callback_args_t *args);
114 static dev_info_t dev_info = "ibmtr_cs";
116 static dev_link_t *ibmtr_attach(void);
117 static void ibmtr_detach(dev_link_t *);
119 static dev_link_t *dev_list;
121 /*====================================================================*/
123 typedef struct ibmtr_dev_t {
125 struct net_device *dev;
127 window_handle_t sram_win_handle;
131 static void netdev_get_drvinfo(struct net_device *dev,
132 struct ethtool_drvinfo *info)
134 strcpy(info->driver, "ibmtr_cs");
137 static struct ethtool_ops netdev_ethtool_ops = {
138 .get_drvinfo = netdev_get_drvinfo,
141 /*======================================================================
143 ibmtr_attach() creates an "instance" of the driver, allocating
144 local data structures for one device. The device is registered
147 ======================================================================*/
149 static dev_link_t *ibmtr_attach(void)
153 struct net_device *dev;
154 client_reg_t client_reg;
157 DEBUG(0, "ibmtr_attach()\n");
159 /* Create new token-ring device */
160 info = kmalloc(sizeof(*info), GFP_KERNEL);
161 if (!info) return NULL;
162 memset(info,0,sizeof(*info));
163 dev = alloc_trdev(sizeof(struct tok_info));
171 info->ti = netdev_priv(dev);
173 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
174 link->io.NumPorts1 = 4;
175 link->io.IOAddrLines = 16;
176 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
177 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
178 link->irq.Handler = &tok_interrupt;
179 link->conf.Attributes = CONF_ENABLE_IRQ;
181 link->conf.IntType = INT_MEMORY_AND_IO;
182 link->conf.Present = PRESENT_OPTION;
184 link->irq.Instance = info->dev = dev;
186 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
188 /* Register with Card Services */
189 link->next = dev_list;
191 client_reg.dev_info = &dev_info;
192 client_reg.Version = 0x0210;
193 client_reg.event_callback_args.client_data = link;
194 ret = pcmcia_register_client(&link->handle, &client_reg);
196 cs_error(link->handle, RegisterClient, ret);
209 /*======================================================================
211 This deletes a driver "instance". The device is de-registered
212 with Card Services. If it has been released, all local data
213 structures are freed. Otherwise, the structures will be freed
214 when the device is released.
216 ======================================================================*/
218 static void ibmtr_detach(dev_link_t *link)
220 struct ibmtr_dev_t *info = link->priv;
222 struct net_device *dev;
224 DEBUG(0, "ibmtr_detach(0x%p)\n", link);
226 /* Locate device structure */
227 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
228 if (*linkp == link) break;
235 unregister_netdev(dev);
238 struct tok_info *ti = netdev_priv(dev);
239 del_timer_sync(&(ti->tr_timer));
241 if (link->state & DEV_CONFIG)
245 pcmcia_deregister_client(link->handle);
247 /* Unlink device structure, free bits */
253 /*======================================================================
255 ibmtr_config() is scheduled to run after a CARD_INSERTION event
256 is received, to configure the PCMCIA socket, and to make the
257 token-ring device available to the system.
259 ======================================================================*/
261 #define CS_CHECK(fn, ret) \
262 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
264 static void ibmtr_config(dev_link_t *link)
266 client_handle_t handle = link->handle;
267 ibmtr_dev_t *info = link->priv;
268 struct net_device *dev = info->dev;
269 struct tok_info *ti = netdev_priv(dev);
274 int i, last_ret, last_fn;
277 DEBUG(0, "ibmtr_config(0x%p)\n", link);
279 tuple.Attributes = 0;
280 tuple.TupleData = buf;
281 tuple.TupleDataMax = 64;
282 tuple.TupleOffset = 0;
283 tuple.DesiredTuple = CISTPL_CONFIG;
284 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
285 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
286 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
287 link->conf.ConfigBase = parse.config.base;
290 link->state |= DEV_CONFIG;
292 link->conf.ConfigIndex = 0x61;
294 /* Determine if this is PRIMARY or ALTERNATE. */
296 /* Try PRIMARY card at 0xA20-0xA23 */
297 link->io.BasePort1 = 0xA20;
298 i = pcmcia_request_io(link->handle, &link->io);
299 if (i != CS_SUCCESS) {
300 /* Couldn't get 0xA20-0xA23. Try ALTERNATE at 0xA24-0xA27. */
301 link->io.BasePort1 = 0xA24;
302 CS_CHECK(RequestIO, pcmcia_request_io(link->handle, &link->io));
304 dev->base_addr = link->io.BasePort1;
306 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
307 dev->irq = link->irq.AssignedIRQ;
308 ti->irq = link->irq.AssignedIRQ;
309 ti->global_int_enable=GLOBAL_INT_ENABLE+((dev->irq==9) ? 2 : dev->irq);
311 /* Allocate the MMIO memory window */
312 req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE;
313 req.Attributes |= WIN_USE_WAIT;
316 req.AccessSpeed = 250;
317 CS_CHECK(RequestWindow, pcmcia_request_window(&link->handle, &req, &link->win));
319 mem.CardOffset = mmiobase;
321 CS_CHECK(MapMemPage, pcmcia_map_mem_page(link->win, &mem));
322 ti->mmio = ioremap(req.Base, req.Size);
324 /* Allocate the SRAM memory window */
325 req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE;
326 req.Attributes |= WIN_USE_WAIT;
328 req.Size = sramsize * 1024;
329 req.AccessSpeed = 250;
330 CS_CHECK(RequestWindow, pcmcia_request_window(&link->handle, &req, &info->sram_win_handle));
332 mem.CardOffset = srambase;
334 CS_CHECK(MapMemPage, pcmcia_map_mem_page(info->sram_win_handle, &mem));
336 ti->sram_base = mem.CardOffset >> 12;
337 ti->sram_virt = ioremap(req.Base, req.Size);
338 ti->sram_phys = req.Base;
340 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
342 /* Set up the Token-Ring Controller Configuration Register and
343 turn on the card. Check the "Local Area Network Credit Card
344 Adapters Technical Reference" SC30-3585 for this info. */
345 ibmtr_hw_setup(dev, mmiobase);
347 link->dev = &info->node;
348 link->state &= ~DEV_CONFIG_PENDING;
349 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
351 i = ibmtr_probe_card(dev);
353 printk(KERN_NOTICE "ibmtr_cs: register_netdev() failed\n");
358 strcpy(info->node.dev_name, dev->name);
360 printk(KERN_INFO "%s: port %#3lx, irq %d,",
361 dev->name, dev->base_addr, dev->irq);
362 printk (" mmio %#5lx,", (u_long)ti->mmio);
363 printk (" sram %#5lx,", (u_long)ti->sram_base << 12);
364 printk ("\n" KERN_INFO " hwaddr=");
365 for (i = 0; i < TR_ALEN; i++)
366 printk("%02X", dev->dev_addr[i]);
371 cs_error(link->handle, last_fn, last_ret);
376 /*======================================================================
378 After a card is removed, ibmtr_release() will unregister the net
379 device, and release the PCMCIA configuration. If the device is
380 still open, this will be postponed until it is closed.
382 ======================================================================*/
384 static void ibmtr_release(dev_link_t *link)
386 ibmtr_dev_t *info = link->priv;
387 struct net_device *dev = info->dev;
389 DEBUG(0, "ibmtr_release(0x%p)\n", link);
391 pcmcia_release_configuration(link->handle);
392 pcmcia_release_io(link->handle, &link->io);
393 pcmcia_release_irq(link->handle, &link->irq);
395 struct tok_info *ti = netdev_priv(dev);
397 pcmcia_release_window(link->win);
398 pcmcia_release_window(info->sram_win_handle);
401 link->state &= ~DEV_CONFIG;
404 static int ibmtr_suspend(struct pcmcia_device *p_dev)
406 dev_link_t *link = dev_to_instance(p_dev);
407 ibmtr_dev_t *info = link->priv;
408 struct net_device *dev = info->dev;
410 link->state |= DEV_SUSPEND;
411 if (link->state & DEV_CONFIG) {
413 netif_device_detach(dev);
414 pcmcia_release_configuration(link->handle);
420 static int ibmtr_resume(struct pcmcia_device *p_dev)
422 dev_link_t *link = dev_to_instance(p_dev);
423 ibmtr_dev_t *info = link->priv;
424 struct net_device *dev = info->dev;
426 link->state &= ~DEV_SUSPEND;
427 if (link->state & DEV_CONFIG) {
428 pcmcia_request_configuration(link->handle, &link->conf);
430 ibmtr_probe(dev); /* really? */
431 netif_device_attach(dev);
439 /*======================================================================
441 The card status event handler. Mostly, this schedules other
442 stuff to run after an event is received. A CARD_REMOVAL event
443 also sets some flags to discourage the net drivers from trying
444 to talk to the card any more.
446 ======================================================================*/
448 static int ibmtr_event(event_t event, int priority,
449 event_callback_args_t *args)
451 dev_link_t *link = args->client_data;
452 ibmtr_dev_t *info = link->priv;
453 struct net_device *dev = info->dev;
455 DEBUG(1, "ibmtr_event(0x%06x)\n", event);
458 case CS_EVENT_CARD_REMOVAL:
459 link->state &= ~DEV_PRESENT;
460 if (link->state & DEV_CONFIG) {
461 /* set flag to bypass normal interrupt code */
462 struct tok_info *priv = netdev_priv(dev);
463 priv->sram_phys |= 1;
464 netif_device_detach(dev);
467 case CS_EVENT_CARD_INSERTION:
468 link->state |= DEV_PRESENT;
475 /*====================================================================*/
477 static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase)
481 /* Bizarre IBM behavior, there are 16 bits of information we
482 need to set, but the card only allows us to send 4 bits at a
483 time. For each byte sent to base_addr, bits 7-4 tell the
484 card which part of the 16 bits we are setting, bits 3-0 contain
485 the actual information */
487 /* First nibble provides 4 bits of mmio */
488 i = (mmiobase >> 16) & 0x0F;
489 outb(i, dev->base_addr);
491 /* Second nibble provides 3 bits of mmio */
492 i = 0x10 | ((mmiobase >> 12) & 0x0E);
493 outb(i, dev->base_addr);
495 /* Third nibble, hard-coded values */
497 outb(i, dev->base_addr);
499 /* Fourth nibble sets shared ram page size */
501 /* 8 = 00, 16 = 01, 32 = 10, 64 = 11 */
502 i = (sramsize >> 4) & 0x07;
503 i = ((i == 4) ? 3 : i) << 2;
508 if (dev->base_addr == 0xA24)
510 outb(i, dev->base_addr);
512 /* 0x40 will release the card for use */
513 outb(0x40, dev->base_addr);
518 static struct pcmcia_device_id ibmtr_ids[] = {
519 PCMCIA_DEVICE_PROD_ID12("3Com", "TokenLink Velocity PC Card", 0x41240e5b, 0x82c3734e),
520 PCMCIA_DEVICE_PROD_ID12("IBM", "TOKEN RING", 0xb569a6e5, 0xbf8eed47),
523 MODULE_DEVICE_TABLE(pcmcia, ibmtr_ids);
525 static struct pcmcia_driver ibmtr_cs_driver = {
526 .owner = THIS_MODULE,
530 .attach = ibmtr_attach,
531 .event = ibmtr_event,
532 .detach = ibmtr_detach,
533 .id_table = ibmtr_ids,
534 .suspend = ibmtr_suspend,
535 .resume = ibmtr_resume,
538 static int __init init_ibmtr_cs(void)
540 return pcmcia_register_driver(&ibmtr_cs_driver);
543 static void __exit exit_ibmtr_cs(void)
545 pcmcia_unregister_driver(&ibmtr_cs_driver);
546 BUG_ON(dev_list != NULL);
549 module_init(init_ibmtr_cs);
550 module_exit(exit_ibmtr_cs);