Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /*====================================================================== |
2 | ||
3 | A PCMCIA token-ring driver for IBM-based cards | |
4 | ||
5 | This driver supports the IBM PCMCIA Token-Ring Card. | |
6 | Written by Steve Kipisz, kipisz@vnet.ibm.com or | |
7 | bungy@ibm.net | |
8 | ||
9 | Written 1995,1996. | |
10 | ||
11 | This code is based on pcnet_cs.c from David Hinds. | |
12 | ||
13 | V2.2.0 February 1999 - Mike Phillips phillim@amtrak.com | |
14 | ||
15 | Linux V2.2.x presented significant changes to the underlying | |
16 | ibmtr.c code. Mainly the code became a lot more organized and | |
17 | modular. | |
18 | ||
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 | |
22 | improved. | |
23 | ||
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. | |
27 | ||
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. | |
31 | ||
32 | CHANGES | |
33 | ||
34 | v2.2.5 April 1999 Mike Phillips (phillim@amtrak.com) | |
35 | Obscure bug fix, required changed to ibmtr.c not ibmtr_cs.c | |
36 | ||
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. | |
40 | ||
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 | |
44 | 0xFFFFF.) | |
45 | ||
46 | ======================================================================*/ | |
47 | ||
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> | |
59 | ||
1da177e4 LT |
60 | #include <pcmcia/cs_types.h> |
61 | #include <pcmcia/cs.h> | |
62 | #include <pcmcia/cistpl.h> | |
63 | #include <pcmcia/ds.h> | |
64 | ||
65 | #include <asm/uaccess.h> | |
66 | #include <asm/io.h> | |
67 | #include <asm/system.h> | |
68 | ||
69 | #define PCMCIA | |
70 | #include "../tokenring/ibmtr.c" | |
71 | ||
72 | #ifdef PCMCIA_DEBUG | |
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"; | |
80 | #else | |
81 | #define DEBUG(n, args...) | |
82 | #endif | |
83 | ||
84 | /*====================================================================*/ | |
85 | ||
86 | /* Parameters that can be set with 'insmod' */ | |
87 | ||
88 | /* MMIO base address */ | |
89 | static u_long mmiobase = 0xce000; | |
90 | ||
91 | /* SRAM base address */ | |
92 | static u_long srambase = 0xd0000; | |
93 | ||
94 | /* SRAM size 8,16,32,64 */ | |
95 | static u_long sramsize = 64; | |
96 | ||
97 | /* Ringspeed 4,16 */ | |
98 | static int ringspeed = 16; | |
99 | ||
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"); | |
105 | ||
106 | /*====================================================================*/ | |
107 | ||
15b99ac1 | 108 | static int ibmtr_config(struct pcmcia_device *link); |
1da177e4 | 109 | static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase); |
fba395ee | 110 | static void ibmtr_release(struct pcmcia_device *link); |
cc3b4866 | 111 | static void ibmtr_detach(struct pcmcia_device *p_dev); |
1da177e4 | 112 | |
1da177e4 LT |
113 | /*====================================================================*/ |
114 | ||
115 | typedef struct ibmtr_dev_t { | |
fd238232 | 116 | struct pcmcia_device *p_dev; |
1da177e4 LT |
117 | struct net_device *dev; |
118 | dev_node_t node; | |
119 | window_handle_t sram_win_handle; | |
120 | struct tok_info *ti; | |
121 | } ibmtr_dev_t; | |
122 | ||
123 | static void netdev_get_drvinfo(struct net_device *dev, | |
124 | struct ethtool_drvinfo *info) | |
125 | { | |
126 | strcpy(info->driver, "ibmtr_cs"); | |
127 | } | |
128 | ||
7282d491 | 129 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 LT |
130 | .get_drvinfo = netdev_get_drvinfo, |
131 | }; | |
132 | ||
133 | /*====================================================================== | |
134 | ||
135 | ibmtr_attach() creates an "instance" of the driver, allocating | |
136 | local data structures for one device. The device is registered | |
137 | with Card Services. | |
138 | ||
139 | ======================================================================*/ | |
140 | ||
abf0437b | 141 | static int __devinit ibmtr_attach(struct pcmcia_device *link) |
1da177e4 LT |
142 | { |
143 | ibmtr_dev_t *info; | |
1da177e4 | 144 | struct net_device *dev; |
fba395ee | 145 | |
1da177e4 LT |
146 | DEBUG(0, "ibmtr_attach()\n"); |
147 | ||
148 | /* Create new token-ring device */ | |
dd00cc48 | 149 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
f8cfa618 | 150 | if (!info) return -ENOMEM; |
1da177e4 | 151 | dev = alloc_trdev(sizeof(struct tok_info)); |
f8cfa618 DB |
152 | if (!dev) { |
153 | kfree(info); | |
154 | return -ENOMEM; | |
155 | } | |
1da177e4 | 156 | |
fba395ee | 157 | info->p_dev = link; |
1da177e4 LT |
158 | link->priv = info; |
159 | info->ti = netdev_priv(dev); | |
160 | ||
161 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
162 | link->io.NumPorts1 = 4; | |
163 | link->io.IOAddrLines = 16; | |
164 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; | |
165 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
166 | link->irq.Handler = &tok_interrupt; | |
167 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
1da177e4 LT |
168 | link->conf.IntType = INT_MEMORY_AND_IO; |
169 | link->conf.Present = PRESENT_OPTION; | |
170 | ||
171 | link->irq.Instance = info->dev = dev; | |
1da177e4 | 172 | |
fd238232 | 173 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
1da177e4 | 174 | |
15b99ac1 | 175 | return ibmtr_config(link); |
1da177e4 LT |
176 | } /* ibmtr_attach */ |
177 | ||
178 | /*====================================================================== | |
179 | ||
180 | This deletes a driver "instance". The device is de-registered | |
181 | with Card Services. If it has been released, all local data | |
182 | structures are freed. Otherwise, the structures will be freed | |
183 | when the device is released. | |
184 | ||
185 | ======================================================================*/ | |
186 | ||
fba395ee | 187 | static void ibmtr_detach(struct pcmcia_device *link) |
1da177e4 LT |
188 | { |
189 | struct ibmtr_dev_t *info = link->priv; | |
b4635811 | 190 | struct net_device *dev = info->dev; |
5bebf82f | 191 | struct tok_info *ti = netdev_priv(dev); |
1da177e4 LT |
192 | |
193 | DEBUG(0, "ibmtr_detach(0x%p)\n", link); | |
5bebf82f PW |
194 | |
195 | /* | |
196 | * When the card removal interrupt hits tok_interrupt(), | |
197 | * bail out early, so we don't crash the machine | |
198 | */ | |
199 | ti->sram_phys |= 1; | |
1da177e4 | 200 | |
fd238232 | 201 | if (link->dev_node) |
1da177e4 | 202 | unregister_netdev(dev); |
5bebf82f PW |
203 | |
204 | del_timer_sync(&(ti->tr_timer)); | |
e2d40963 DB |
205 | |
206 | ibmtr_release(link); | |
1da177e4 | 207 | |
1da177e4 | 208 | free_netdev(dev); |
b4635811 | 209 | kfree(info); |
1da177e4 LT |
210 | } /* ibmtr_detach */ |
211 | ||
212 | /*====================================================================== | |
213 | ||
214 | ibmtr_config() is scheduled to run after a CARD_INSERTION event | |
215 | is received, to configure the PCMCIA socket, and to make the | |
216 | token-ring device available to the system. | |
217 | ||
218 | ======================================================================*/ | |
219 | ||
220 | #define CS_CHECK(fn, ret) \ | |
221 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
222 | ||
abf0437b | 223 | static int __devinit ibmtr_config(struct pcmcia_device *link) |
1da177e4 | 224 | { |
1da177e4 LT |
225 | ibmtr_dev_t *info = link->priv; |
226 | struct net_device *dev = info->dev; | |
227 | struct tok_info *ti = netdev_priv(dev); | |
1da177e4 LT |
228 | win_req_t req; |
229 | memreq_t mem; | |
230 | int i, last_ret, last_fn; | |
1da177e4 LT |
231 | |
232 | DEBUG(0, "ibmtr_config(0x%p)\n", link); | |
233 | ||
1da177e4 LT |
234 | link->conf.ConfigIndex = 0x61; |
235 | ||
236 | /* Determine if this is PRIMARY or ALTERNATE. */ | |
237 | ||
238 | /* Try PRIMARY card at 0xA20-0xA23 */ | |
239 | link->io.BasePort1 = 0xA20; | |
fba395ee | 240 | i = pcmcia_request_io(link, &link->io); |
4c89e88b | 241 | if (i != 0) { |
1da177e4 LT |
242 | /* Couldn't get 0xA20-0xA23. Try ALTERNATE at 0xA24-0xA27. */ |
243 | link->io.BasePort1 = 0xA24; | |
fba395ee | 244 | CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io)); |
1da177e4 LT |
245 | } |
246 | dev->base_addr = link->io.BasePort1; | |
247 | ||
fba395ee | 248 | CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); |
1da177e4 LT |
249 | dev->irq = link->irq.AssignedIRQ; |
250 | ti->irq = link->irq.AssignedIRQ; | |
251 | ti->global_int_enable=GLOBAL_INT_ENABLE+((dev->irq==9) ? 2 : dev->irq); | |
252 | ||
253 | /* Allocate the MMIO memory window */ | |
254 | req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; | |
255 | req.Attributes |= WIN_USE_WAIT; | |
256 | req.Base = 0; | |
257 | req.Size = 0x2000; | |
258 | req.AccessSpeed = 250; | |
fba395ee | 259 | CS_CHECK(RequestWindow, pcmcia_request_window(&link, &req, &link->win)); |
1da177e4 LT |
260 | |
261 | mem.CardOffset = mmiobase; | |
262 | mem.Page = 0; | |
263 | CS_CHECK(MapMemPage, pcmcia_map_mem_page(link->win, &mem)); | |
264 | ti->mmio = ioremap(req.Base, req.Size); | |
265 | ||
266 | /* Allocate the SRAM memory window */ | |
267 | req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; | |
268 | req.Attributes |= WIN_USE_WAIT; | |
269 | req.Base = 0; | |
270 | req.Size = sramsize * 1024; | |
271 | req.AccessSpeed = 250; | |
fba395ee | 272 | CS_CHECK(RequestWindow, pcmcia_request_window(&link, &req, &info->sram_win_handle)); |
1da177e4 LT |
273 | |
274 | mem.CardOffset = srambase; | |
275 | mem.Page = 0; | |
276 | CS_CHECK(MapMemPage, pcmcia_map_mem_page(info->sram_win_handle, &mem)); | |
277 | ||
278 | ti->sram_base = mem.CardOffset >> 12; | |
279 | ti->sram_virt = ioremap(req.Base, req.Size); | |
280 | ti->sram_phys = req.Base; | |
281 | ||
fba395ee | 282 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); |
1da177e4 LT |
283 | |
284 | /* Set up the Token-Ring Controller Configuration Register and | |
285 | turn on the card. Check the "Local Area Network Credit Card | |
286 | Adapters Technical Reference" SC30-3585 for this info. */ | |
287 | ibmtr_hw_setup(dev, mmiobase); | |
288 | ||
fd238232 | 289 | link->dev_node = &info->node; |
fba395ee | 290 | SET_NETDEV_DEV(dev, &handle_to_dev(link)); |
1da177e4 LT |
291 | |
292 | i = ibmtr_probe_card(dev); | |
293 | if (i != 0) { | |
294 | printk(KERN_NOTICE "ibmtr_cs: register_netdev() failed\n"); | |
fd238232 | 295 | link->dev_node = NULL; |
1da177e4 LT |
296 | goto failed; |
297 | } | |
298 | ||
299 | strcpy(info->node.dev_name, dev->name); | |
300 | ||
301 | printk(KERN_INFO "%s: port %#3lx, irq %d,", | |
302 | dev->name, dev->base_addr, dev->irq); | |
303 | printk (" mmio %#5lx,", (u_long)ti->mmio); | |
304 | printk (" sram %#5lx,", (u_long)ti->sram_base << 12); | |
305 | printk ("\n" KERN_INFO " hwaddr="); | |
306 | for (i = 0; i < TR_ALEN; i++) | |
307 | printk("%02X", dev->dev_addr[i]); | |
308 | printk("\n"); | |
15b99ac1 | 309 | return 0; |
1da177e4 LT |
310 | |
311 | cs_failed: | |
fba395ee | 312 | cs_error(link, last_fn, last_ret); |
1da177e4 LT |
313 | failed: |
314 | ibmtr_release(link); | |
15b99ac1 | 315 | return -ENODEV; |
1da177e4 LT |
316 | } /* ibmtr_config */ |
317 | ||
318 | /*====================================================================== | |
319 | ||
320 | After a card is removed, ibmtr_release() will unregister the net | |
321 | device, and release the PCMCIA configuration. If the device is | |
322 | still open, this will be postponed until it is closed. | |
323 | ||
324 | ======================================================================*/ | |
325 | ||
fba395ee | 326 | static void ibmtr_release(struct pcmcia_device *link) |
1da177e4 | 327 | { |
5f2a71fc DB |
328 | ibmtr_dev_t *info = link->priv; |
329 | struct net_device *dev = info->dev; | |
1da177e4 | 330 | |
5f2a71fc | 331 | DEBUG(0, "ibmtr_release(0x%p)\n", link); |
1da177e4 | 332 | |
5f2a71fc DB |
333 | if (link->win) { |
334 | struct tok_info *ti = netdev_priv(dev); | |
335 | iounmap(ti->mmio); | |
336 | pcmcia_release_window(info->sram_win_handle); | |
337 | } | |
fba395ee | 338 | pcmcia_disable_device(link); |
1da177e4 LT |
339 | } |
340 | ||
fba395ee | 341 | static int ibmtr_suspend(struct pcmcia_device *link) |
98e4c28b | 342 | { |
98e4c28b DB |
343 | ibmtr_dev_t *info = link->priv; |
344 | struct net_device *dev = info->dev; | |
345 | ||
e2d40963 | 346 | if (link->open) |
8661bb5b | 347 | netif_device_detach(dev); |
98e4c28b DB |
348 | |
349 | return 0; | |
350 | } | |
351 | ||
8814b505 | 352 | static int __devinit ibmtr_resume(struct pcmcia_device *link) |
98e4c28b | 353 | { |
98e4c28b DB |
354 | ibmtr_dev_t *info = link->priv; |
355 | struct net_device *dev = info->dev; | |
356 | ||
e2d40963 | 357 | if (link->open) { |
8661bb5b DB |
358 | ibmtr_probe(dev); /* really? */ |
359 | netif_device_attach(dev); | |
360 | } | |
98e4c28b DB |
361 | |
362 | return 0; | |
363 | } | |
364 | ||
365 | ||
1da177e4 LT |
366 | /*====================================================================*/ |
367 | ||
368 | static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase) | |
369 | { | |
370 | int i; | |
371 | ||
372 | /* Bizarre IBM behavior, there are 16 bits of information we | |
373 | need to set, but the card only allows us to send 4 bits at a | |
374 | time. For each byte sent to base_addr, bits 7-4 tell the | |
375 | card which part of the 16 bits we are setting, bits 3-0 contain | |
376 | the actual information */ | |
377 | ||
378 | /* First nibble provides 4 bits of mmio */ | |
379 | i = (mmiobase >> 16) & 0x0F; | |
380 | outb(i, dev->base_addr); | |
381 | ||
382 | /* Second nibble provides 3 bits of mmio */ | |
383 | i = 0x10 | ((mmiobase >> 12) & 0x0E); | |
384 | outb(i, dev->base_addr); | |
385 | ||
386 | /* Third nibble, hard-coded values */ | |
387 | i = 0x26; | |
388 | outb(i, dev->base_addr); | |
389 | ||
390 | /* Fourth nibble sets shared ram page size */ | |
391 | ||
392 | /* 8 = 00, 16 = 01, 32 = 10, 64 = 11 */ | |
393 | i = (sramsize >> 4) & 0x07; | |
394 | i = ((i == 4) ? 3 : i) << 2; | |
395 | i |= 0x30; | |
396 | ||
397 | if (ringspeed == 16) | |
398 | i |= 2; | |
399 | if (dev->base_addr == 0xA24) | |
400 | i |= 1; | |
401 | outb(i, dev->base_addr); | |
402 | ||
403 | /* 0x40 will release the card for use */ | |
404 | outb(0x40, dev->base_addr); | |
405 | ||
406 | return; | |
407 | } | |
408 | ||
469bf2b9 DB |
409 | static struct pcmcia_device_id ibmtr_ids[] = { |
410 | PCMCIA_DEVICE_PROD_ID12("3Com", "TokenLink Velocity PC Card", 0x41240e5b, 0x82c3734e), | |
411 | PCMCIA_DEVICE_PROD_ID12("IBM", "TOKEN RING", 0xb569a6e5, 0xbf8eed47), | |
412 | PCMCIA_DEVICE_NULL, | |
413 | }; | |
414 | MODULE_DEVICE_TABLE(pcmcia, ibmtr_ids); | |
415 | ||
1da177e4 LT |
416 | static struct pcmcia_driver ibmtr_cs_driver = { |
417 | .owner = THIS_MODULE, | |
418 | .drv = { | |
419 | .name = "ibmtr_cs", | |
420 | }, | |
f8cfa618 | 421 | .probe = ibmtr_attach, |
cc3b4866 | 422 | .remove = ibmtr_detach, |
469bf2b9 | 423 | .id_table = ibmtr_ids, |
98e4c28b DB |
424 | .suspend = ibmtr_suspend, |
425 | .resume = ibmtr_resume, | |
1da177e4 LT |
426 | }; |
427 | ||
428 | static int __init init_ibmtr_cs(void) | |
429 | { | |
430 | return pcmcia_register_driver(&ibmtr_cs_driver); | |
431 | } | |
432 | ||
433 | static void __exit exit_ibmtr_cs(void) | |
434 | { | |
435 | pcmcia_unregister_driver(&ibmtr_cs_driver); | |
1da177e4 LT |
436 | } |
437 | ||
438 | module_init(init_ibmtr_cs); | |
439 | module_exit(exit_ibmtr_cs); |