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 | ||
636b8116 JP |
48 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
49 | ||
1da177e4 LT |
50 | #include <linux/kernel.h> |
51 | #include <linux/init.h> | |
52 | #include <linux/ptrace.h> | |
53 | #include <linux/slab.h> | |
54 | #include <linux/string.h> | |
55 | #include <linux/timer.h> | |
56 | #include <linux/module.h> | |
1da177e4 LT |
57 | #include <linux/netdevice.h> |
58 | #include <linux/trdevice.h> | |
59 | #include <linux/ibmtr.h> | |
60 | ||
1da177e4 LT |
61 | #include <pcmcia/cistpl.h> |
62 | #include <pcmcia/ds.h> | |
63 | ||
64 | #include <asm/uaccess.h> | |
65 | #include <asm/io.h> | |
66 | #include <asm/system.h> | |
67 | ||
68 | #define PCMCIA | |
69 | #include "../tokenring/ibmtr.c" | |
70 | ||
1da177e4 LT |
71 | |
72 | /*====================================================================*/ | |
73 | ||
74 | /* Parameters that can be set with 'insmod' */ | |
75 | ||
76 | /* MMIO base address */ | |
77 | static u_long mmiobase = 0xce000; | |
78 | ||
79 | /* SRAM base address */ | |
80 | static u_long srambase = 0xd0000; | |
81 | ||
82 | /* SRAM size 8,16,32,64 */ | |
83 | static u_long sramsize = 64; | |
84 | ||
85 | /* Ringspeed 4,16 */ | |
86 | static int ringspeed = 16; | |
87 | ||
88 | module_param(mmiobase, ulong, 0); | |
89 | module_param(srambase, ulong, 0); | |
90 | module_param(sramsize, ulong, 0); | |
91 | module_param(ringspeed, int, 0); | |
92 | MODULE_LICENSE("GPL"); | |
93 | ||
94 | /*====================================================================*/ | |
95 | ||
15b99ac1 | 96 | static int ibmtr_config(struct pcmcia_device *link); |
1da177e4 | 97 | static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase); |
fba395ee | 98 | static void ibmtr_release(struct pcmcia_device *link); |
cc3b4866 | 99 | static void ibmtr_detach(struct pcmcia_device *p_dev); |
1da177e4 | 100 | |
1da177e4 LT |
101 | /*====================================================================*/ |
102 | ||
103 | typedef struct ibmtr_dev_t { | |
fd238232 | 104 | struct pcmcia_device *p_dev; |
cdb13808 DB |
105 | struct net_device *dev; |
106 | struct tok_info *ti; | |
1da177e4 LT |
107 | } ibmtr_dev_t; |
108 | ||
5fa9167a DB |
109 | static irqreturn_t ibmtr_interrupt(int irq, void *dev_id) { |
110 | ibmtr_dev_t *info = dev_id; | |
111 | struct net_device *dev = info->dev; | |
112 | return tok_interrupt(irq, dev); | |
113 | }; | |
114 | ||
abf0437b | 115 | static int __devinit ibmtr_attach(struct pcmcia_device *link) |
1da177e4 LT |
116 | { |
117 | ibmtr_dev_t *info; | |
1da177e4 | 118 | struct net_device *dev; |
fba395ee | 119 | |
dd0fab5b | 120 | dev_dbg(&link->dev, "ibmtr_attach()\n"); |
1da177e4 LT |
121 | |
122 | /* Create new token-ring device */ | |
dd00cc48 | 123 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
f8cfa618 | 124 | if (!info) return -ENOMEM; |
1da177e4 | 125 | dev = alloc_trdev(sizeof(struct tok_info)); |
f8cfa618 DB |
126 | if (!dev) { |
127 | kfree(info); | |
128 | return -ENOMEM; | |
129 | } | |
1da177e4 | 130 | |
fba395ee | 131 | info->p_dev = link; |
1da177e4 LT |
132 | link->priv = info; |
133 | info->ti = netdev_priv(dev); | |
134 | ||
90abdc3b DB |
135 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
136 | link->resource[0]->end = 4; | |
1ac71e5a | 137 | link->config_flags |= CONF_ENABLE_IRQ; |
7feabb64 | 138 | link->config_regs = PRESENT_OPTION; |
1da177e4 | 139 | |
5fa9167a | 140 | info->dev = dev; |
1da177e4 | 141 | |
15b99ac1 | 142 | return ibmtr_config(link); |
1da177e4 LT |
143 | } /* ibmtr_attach */ |
144 | ||
fba395ee | 145 | static void ibmtr_detach(struct pcmcia_device *link) |
1da177e4 LT |
146 | { |
147 | struct ibmtr_dev_t *info = link->priv; | |
b4635811 | 148 | struct net_device *dev = info->dev; |
5bebf82f | 149 | struct tok_info *ti = netdev_priv(dev); |
1da177e4 | 150 | |
dd0fab5b | 151 | dev_dbg(&link->dev, "ibmtr_detach\n"); |
5bebf82f PW |
152 | |
153 | /* | |
154 | * When the card removal interrupt hits tok_interrupt(), | |
155 | * bail out early, so we don't crash the machine | |
156 | */ | |
157 | ti->sram_phys |= 1; | |
1da177e4 | 158 | |
c7c2fa07 | 159 | unregister_netdev(dev); |
5bebf82f PW |
160 | |
161 | del_timer_sync(&(ti->tr_timer)); | |
e2d40963 DB |
162 | |
163 | ibmtr_release(link); | |
1da177e4 | 164 | |
1da177e4 | 165 | free_netdev(dev); |
b4635811 | 166 | kfree(info); |
1da177e4 LT |
167 | } /* ibmtr_detach */ |
168 | ||
abf0437b | 169 | static int __devinit ibmtr_config(struct pcmcia_device *link) |
1da177e4 | 170 | { |
1da177e4 LT |
171 | ibmtr_dev_t *info = link->priv; |
172 | struct net_device *dev = info->dev; | |
173 | struct tok_info *ti = netdev_priv(dev); | |
dd0fab5b | 174 | int i, ret; |
1da177e4 | 175 | |
dd0fab5b | 176 | dev_dbg(&link->dev, "ibmtr_config\n"); |
1da177e4 | 177 | |
90abdc3b | 178 | link->io_lines = 16; |
7feabb64 | 179 | link->config_index = 0x61; |
1da177e4 LT |
180 | |
181 | /* Determine if this is PRIMARY or ALTERNATE. */ | |
182 | ||
183 | /* Try PRIMARY card at 0xA20-0xA23 */ | |
90abdc3b DB |
184 | link->resource[0]->start = 0xA20; |
185 | i = pcmcia_request_io(link); | |
4c89e88b | 186 | if (i != 0) { |
1da177e4 | 187 | /* Couldn't get 0xA20-0xA23. Try ALTERNATE at 0xA24-0xA27. */ |
90abdc3b DB |
188 | link->resource[0]->start = 0xA24; |
189 | ret = pcmcia_request_io(link); | |
dd0fab5b DB |
190 | if (ret) |
191 | goto failed; | |
1da177e4 | 192 | } |
9a017a91 | 193 | dev->base_addr = link->resource[0]->start; |
1da177e4 | 194 | |
eb14120f | 195 | ret = pcmcia_request_exclusive_irq(link, ibmtr_interrupt); |
dd0fab5b DB |
196 | if (ret) |
197 | goto failed; | |
eb14120f DB |
198 | dev->irq = link->irq; |
199 | ti->irq = link->irq; | |
1da177e4 LT |
200 | ti->global_int_enable=GLOBAL_INT_ENABLE+((dev->irq==9) ? 2 : dev->irq); |
201 | ||
202 | /* Allocate the MMIO memory window */ | |
cdb13808 DB |
203 | link->resource[2]->flags |= WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; |
204 | link->resource[2]->flags |= WIN_USE_WAIT; | |
205 | link->resource[2]->start = 0; | |
206 | link->resource[2]->end = 0x2000; | |
207 | ret = pcmcia_request_window(link, link->resource[2], 250); | |
dd0fab5b DB |
208 | if (ret) |
209 | goto failed; | |
1da177e4 | 210 | |
cdb13808 | 211 | ret = pcmcia_map_mem_page(link, link->resource[2], mmiobase); |
dd0fab5b DB |
212 | if (ret) |
213 | goto failed; | |
cdb13808 DB |
214 | ti->mmio = ioremap(link->resource[2]->start, |
215 | resource_size(link->resource[2])); | |
1da177e4 LT |
216 | |
217 | /* Allocate the SRAM memory window */ | |
cdb13808 DB |
218 | link->resource[3]->flags = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; |
219 | link->resource[3]->flags |= WIN_USE_WAIT; | |
220 | link->resource[3]->start = 0; | |
221 | link->resource[3]->end = sramsize * 1024; | |
222 | ret = pcmcia_request_window(link, link->resource[3], 250); | |
dd0fab5b DB |
223 | if (ret) |
224 | goto failed; | |
1da177e4 | 225 | |
cdb13808 | 226 | ret = pcmcia_map_mem_page(link, link->resource[3], srambase); |
dd0fab5b DB |
227 | if (ret) |
228 | goto failed; | |
1da177e4 | 229 | |
b5cb259e | 230 | ti->sram_base = srambase >> 12; |
cdb13808 DB |
231 | ti->sram_virt = ioremap(link->resource[3]->start, |
232 | resource_size(link->resource[3])); | |
233 | ti->sram_phys = link->resource[3]->start; | |
1da177e4 | 234 | |
1ac71e5a | 235 | ret = pcmcia_enable_device(link); |
dd0fab5b DB |
236 | if (ret) |
237 | goto failed; | |
1da177e4 LT |
238 | |
239 | /* Set up the Token-Ring Controller Configuration Register and | |
240 | turn on the card. Check the "Local Area Network Credit Card | |
241 | Adapters Technical Reference" SC30-3585 for this info. */ | |
242 | ibmtr_hw_setup(dev, mmiobase); | |
243 | ||
dd2e5a15 | 244 | SET_NETDEV_DEV(dev, &link->dev); |
1da177e4 LT |
245 | |
246 | i = ibmtr_probe_card(dev); | |
247 | if (i != 0) { | |
636b8116 | 248 | pr_notice("register_netdev() failed\n"); |
1da177e4 LT |
249 | goto failed; |
250 | } | |
251 | ||
636b8116 JP |
252 | netdev_info(dev, "port %#3lx, irq %d, mmio %#5lx, sram %#5lx, hwaddr=%pM\n", |
253 | dev->base_addr, dev->irq, | |
254 | (u_long)ti->mmio, (u_long)(ti->sram_base << 12), | |
255 | dev->dev_addr); | |
15b99ac1 | 256 | return 0; |
1da177e4 | 257 | |
1da177e4 LT |
258 | failed: |
259 | ibmtr_release(link); | |
15b99ac1 | 260 | return -ENODEV; |
1da177e4 LT |
261 | } /* ibmtr_config */ |
262 | ||
fba395ee | 263 | static void ibmtr_release(struct pcmcia_device *link) |
1da177e4 | 264 | { |
5f2a71fc DB |
265 | ibmtr_dev_t *info = link->priv; |
266 | struct net_device *dev = info->dev; | |
1da177e4 | 267 | |
dd0fab5b | 268 | dev_dbg(&link->dev, "ibmtr_release\n"); |
1da177e4 | 269 | |
cdb13808 | 270 | if (link->resource[2]->end) { |
5f2a71fc DB |
271 | struct tok_info *ti = netdev_priv(dev); |
272 | iounmap(ti->mmio); | |
5f2a71fc | 273 | } |
fba395ee | 274 | pcmcia_disable_device(link); |
1da177e4 LT |
275 | } |
276 | ||
fba395ee | 277 | static int ibmtr_suspend(struct pcmcia_device *link) |
98e4c28b | 278 | { |
98e4c28b DB |
279 | ibmtr_dev_t *info = link->priv; |
280 | struct net_device *dev = info->dev; | |
281 | ||
e2d40963 | 282 | if (link->open) |
8661bb5b | 283 | netif_device_detach(dev); |
98e4c28b DB |
284 | |
285 | return 0; | |
286 | } | |
287 | ||
8814b505 | 288 | static int __devinit ibmtr_resume(struct pcmcia_device *link) |
98e4c28b | 289 | { |
98e4c28b DB |
290 | ibmtr_dev_t *info = link->priv; |
291 | struct net_device *dev = info->dev; | |
292 | ||
e2d40963 | 293 | if (link->open) { |
8661bb5b DB |
294 | ibmtr_probe(dev); /* really? */ |
295 | netif_device_attach(dev); | |
296 | } | |
98e4c28b DB |
297 | |
298 | return 0; | |
299 | } | |
300 | ||
301 | ||
1da177e4 LT |
302 | /*====================================================================*/ |
303 | ||
304 | static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase) | |
305 | { | |
306 | int i; | |
307 | ||
308 | /* Bizarre IBM behavior, there are 16 bits of information we | |
309 | need to set, but the card only allows us to send 4 bits at a | |
310 | time. For each byte sent to base_addr, bits 7-4 tell the | |
311 | card which part of the 16 bits we are setting, bits 3-0 contain | |
312 | the actual information */ | |
313 | ||
314 | /* First nibble provides 4 bits of mmio */ | |
315 | i = (mmiobase >> 16) & 0x0F; | |
316 | outb(i, dev->base_addr); | |
317 | ||
318 | /* Second nibble provides 3 bits of mmio */ | |
319 | i = 0x10 | ((mmiobase >> 12) & 0x0E); | |
320 | outb(i, dev->base_addr); | |
321 | ||
322 | /* Third nibble, hard-coded values */ | |
323 | i = 0x26; | |
324 | outb(i, dev->base_addr); | |
325 | ||
326 | /* Fourth nibble sets shared ram page size */ | |
327 | ||
328 | /* 8 = 00, 16 = 01, 32 = 10, 64 = 11 */ | |
329 | i = (sramsize >> 4) & 0x07; | |
330 | i = ((i == 4) ? 3 : i) << 2; | |
331 | i |= 0x30; | |
332 | ||
333 | if (ringspeed == 16) | |
334 | i |= 2; | |
335 | if (dev->base_addr == 0xA24) | |
336 | i |= 1; | |
337 | outb(i, dev->base_addr); | |
338 | ||
339 | /* 0x40 will release the card for use */ | |
340 | outb(0x40, dev->base_addr); | |
1da177e4 LT |
341 | } |
342 | ||
25f8f54f | 343 | static const struct pcmcia_device_id ibmtr_ids[] = { |
469bf2b9 DB |
344 | PCMCIA_DEVICE_PROD_ID12("3Com", "TokenLink Velocity PC Card", 0x41240e5b, 0x82c3734e), |
345 | PCMCIA_DEVICE_PROD_ID12("IBM", "TOKEN RING", 0xb569a6e5, 0xbf8eed47), | |
346 | PCMCIA_DEVICE_NULL, | |
347 | }; | |
348 | MODULE_DEVICE_TABLE(pcmcia, ibmtr_ids); | |
349 | ||
1da177e4 LT |
350 | static struct pcmcia_driver ibmtr_cs_driver = { |
351 | .owner = THIS_MODULE, | |
2e9b981a | 352 | .name = "ibmtr_cs", |
f8cfa618 | 353 | .probe = ibmtr_attach, |
cc3b4866 | 354 | .remove = ibmtr_detach, |
469bf2b9 | 355 | .id_table = ibmtr_ids, |
98e4c28b DB |
356 | .suspend = ibmtr_suspend, |
357 | .resume = ibmtr_resume, | |
1da177e4 LT |
358 | }; |
359 | ||
360 | static int __init init_ibmtr_cs(void) | |
361 | { | |
362 | return pcmcia_register_driver(&ibmtr_cs_driver); | |
363 | } | |
364 | ||
365 | static void __exit exit_ibmtr_cs(void) | |
366 | { | |
367 | pcmcia_unregister_driver(&ibmtr_cs_driver); | |
1da177e4 LT |
368 | } |
369 | ||
370 | module_init(init_ibmtr_cs); | |
371 | module_exit(exit_ibmtr_cs); |