1 | /* |
2 | * Linux ARCnet driver - COM20020 PCMCIA support |
3 | * |
4 | * Written 1994-1999 by Avery Pennarun, |
5 | * based on an ISA version by David Woodhouse. |
6 | * Derived from ibmtr_cs.c by Steve Kipisz (pcmcia-cs 3.1.4) |
7 | * which was derived from pcnet_cs.c by David Hinds. |
8 | * Some additional portions derived from skeleton.c by Donald Becker. |
9 | * |
10 | * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com) |
11 | * for sponsoring the further development of this driver. |
12 | * |
13 | * ********************** |
14 | * |
15 | * The original copyright of skeleton.c was as follows: |
16 | * |
17 | * skeleton.c Written 1993 by Donald Becker. |
18 | * Copyright 1993 United States Government as represented by the |
19 | * Director, National Security Agency. This software may only be used |
20 | * and distributed according to the terms of the GNU General Public License as |
21 | * modified by SRC, incorporated herein by reference. |
22 | * |
23 | * ********************** |
24 | * Changes: |
25 | * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/2000 |
26 | * - reorganize kmallocs in com20020_attach, checking all for failure |
27 | * and releasing the previous allocations if one fails |
28 | * ********************** |
29 | * |
30 | * For more details, see drivers/net/arcnet.c |
31 | * |
32 | * ********************** |
33 | */ |
34 | |
35 | #define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt |
36 | |
37 | #include <linux/kernel.h> |
38 | #include <linux/ptrace.h> |
39 | #include <linux/slab.h> |
40 | #include <linux/string.h> |
41 | #include <linux/timer.h> |
42 | #include <linux/delay.h> |
43 | #include <linux/module.h> |
44 | #include <linux/netdevice.h> |
45 | #include <linux/io.h> |
46 | #include <pcmcia/cistpl.h> |
47 | #include <pcmcia/ds.h> |
48 | |
49 | #include "arcdevice.h" |
50 | #include "com20020.h" |
51 | |
52 | static void regdump(struct net_device *dev) |
53 | { |
54 | #ifdef DEBUG |
55 | int ioaddr = dev->base_addr; |
56 | int count; |
57 | |
58 | netdev_dbg(dev, "register dump:\n" ); |
59 | for (count = 0; count < 16; count++) { |
60 | if (!(count % 16)) |
61 | pr_cont("%04X:" , ioaddr + count); |
62 | pr_cont(" %02X" , arcnet_inb(ioaddr, count)); |
63 | } |
64 | pr_cont("\n" ); |
65 | |
66 | netdev_dbg(dev, "buffer0 dump:\n" ); |
67 | /* set up the address register */ |
68 | count = 0; |
69 | arcnet_outb((count >> 8) | RDDATAflag | AUTOINCflag, |
70 | ioaddr, COM20020_REG_W_ADDR_HI); |
71 | arcnet_outb(count & 0xff, ioaddr, COM20020_REG_W_ADDR_LO); |
72 | |
73 | for (count = 0; count < 256 + 32; count++) { |
74 | if (!(count % 16)) |
75 | pr_cont("%04X:" , count); |
76 | |
77 | /* copy the data */ |
78 | pr_cont(" %02X" , arcnet_inb(ioaddr, COM20020_REG_RW_MEMDATA)); |
79 | } |
80 | pr_cont("\n" ); |
81 | #endif |
82 | } |
83 | |
84 | /*====================================================================*/ |
85 | |
86 | /* Parameters that can be set with 'insmod' */ |
87 | |
88 | static int node; |
89 | static int timeout = 3; |
90 | static int backplane; |
91 | static int clockp; |
92 | static int clockm; |
93 | |
94 | module_param(node, int, 0); |
95 | module_param(timeout, int, 0); |
96 | module_param(backplane, int, 0); |
97 | module_param(clockp, int, 0); |
98 | module_param(clockm, int, 0); |
99 | |
100 | MODULE_LICENSE("GPL" ); |
101 | |
102 | /*====================================================================*/ |
103 | |
104 | static int com20020_config(struct pcmcia_device *link); |
105 | static void com20020_release(struct pcmcia_device *link); |
106 | |
107 | static void com20020_detach(struct pcmcia_device *p_dev); |
108 | |
109 | /*====================================================================*/ |
110 | |
111 | static int com20020_probe(struct pcmcia_device *p_dev) |
112 | { |
113 | struct com20020_dev *info; |
114 | struct net_device *dev; |
115 | struct arcnet_local *lp; |
116 | int ret = -ENOMEM; |
117 | |
118 | dev_dbg(&p_dev->dev, "com20020_attach()\n" ); |
119 | |
120 | /* Create new network device */ |
121 | info = kzalloc(size: sizeof(*info), GFP_KERNEL); |
122 | if (!info) |
123 | goto fail_alloc_info; |
124 | |
125 | dev = alloc_arcdev(name: "" ); |
126 | if (!dev) |
127 | goto fail_alloc_dev; |
128 | |
129 | lp = netdev_priv(dev); |
130 | lp->timeout = timeout; |
131 | lp->backplane = backplane; |
132 | lp->clockp = clockp; |
133 | lp->clockm = clockm & 3; |
134 | lp->hw.owner = THIS_MODULE; |
135 | |
136 | /* fill in our module parameters as defaults */ |
137 | arcnet_set_addr(dev, addr: node); |
138 | |
139 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
140 | p_dev->resource[0]->end = 16; |
141 | p_dev->config_flags |= CONF_ENABLE_IRQ; |
142 | |
143 | info->dev = dev; |
144 | p_dev->priv = info; |
145 | |
146 | ret = com20020_config(link: p_dev); |
147 | if (ret) |
148 | goto fail_config; |
149 | |
150 | return 0; |
151 | |
152 | fail_config: |
153 | free_arcdev(dev); |
154 | fail_alloc_dev: |
155 | kfree(objp: info); |
156 | fail_alloc_info: |
157 | return ret; |
158 | } /* com20020_attach */ |
159 | |
160 | static void com20020_detach(struct pcmcia_device *link) |
161 | { |
162 | struct com20020_dev *info = link->priv; |
163 | struct net_device *dev = info->dev; |
164 | |
165 | dev_dbg(&link->dev, "detach...\n" ); |
166 | |
167 | dev_dbg(&link->dev, "com20020_detach\n" ); |
168 | |
169 | dev_dbg(&link->dev, "unregister...\n" ); |
170 | |
171 | unregister_netdev(dev); |
172 | |
173 | /* this is necessary because we register our IRQ separately |
174 | * from card services. |
175 | */ |
176 | if (dev->irq) |
177 | free_irq(dev->irq, dev); |
178 | |
179 | com20020_release(link); |
180 | |
181 | /* Unlink device structure, free bits */ |
182 | dev_dbg(&link->dev, "unlinking...\n" ); |
183 | if (link->priv) { |
184 | dev = info->dev; |
185 | if (dev) { |
186 | dev_dbg(&link->dev, "kfree...\n" ); |
187 | free_arcdev(dev); |
188 | } |
189 | dev_dbg(&link->dev, "kfree2...\n" ); |
190 | kfree(objp: info); |
191 | } |
192 | |
193 | } /* com20020_detach */ |
194 | |
195 | static int com20020_config(struct pcmcia_device *link) |
196 | { |
197 | struct arcnet_local *lp; |
198 | struct com20020_dev *info; |
199 | struct net_device *dev; |
200 | int i, ret; |
201 | int ioaddr; |
202 | |
203 | info = link->priv; |
204 | dev = info->dev; |
205 | |
206 | dev_dbg(&link->dev, "config...\n" ); |
207 | |
208 | dev_dbg(&link->dev, "com20020_config\n" ); |
209 | |
210 | dev_dbg(&link->dev, "baseport1 is %Xh\n" , |
211 | (unsigned int)link->resource[0]->start); |
212 | |
213 | i = -ENODEV; |
214 | link->io_lines = 16; |
215 | |
216 | if (!link->resource[0]->start) { |
217 | for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10) { |
218 | link->resource[0]->start = ioaddr; |
219 | i = pcmcia_request_io(p_dev: link); |
220 | if (i == 0) |
221 | break; |
222 | } |
223 | } else { |
224 | i = pcmcia_request_io(p_dev: link); |
225 | } |
226 | |
227 | if (i != 0) { |
228 | dev_dbg(&link->dev, "requestIO failed totally!\n" ); |
229 | goto failed; |
230 | } |
231 | |
232 | ioaddr = dev->base_addr = link->resource[0]->start; |
233 | dev_dbg(&link->dev, "got ioaddr %Xh\n" , ioaddr); |
234 | |
235 | dev_dbg(&link->dev, "request IRQ %d\n" , |
236 | link->irq); |
237 | if (!link->irq) { |
238 | dev_dbg(&link->dev, "requestIRQ failed totally!\n" ); |
239 | goto failed; |
240 | } |
241 | |
242 | dev->irq = link->irq; |
243 | |
244 | ret = pcmcia_enable_device(p_dev: link); |
245 | if (ret) |
246 | goto failed; |
247 | |
248 | if (com20020_check(dev)) { |
249 | regdump(dev); |
250 | goto failed; |
251 | } |
252 | |
253 | lp = netdev_priv(dev); |
254 | lp->card_name = "PCMCIA COM20020" ; |
255 | lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */ |
256 | |
257 | SET_NETDEV_DEV(dev, &link->dev); |
258 | |
259 | i = com20020_found(dev, shared: 0); /* calls register_netdev */ |
260 | |
261 | if (i != 0) { |
262 | dev_notice(&link->dev, |
263 | "com20020_found() failed\n" ); |
264 | goto failed; |
265 | } |
266 | |
267 | netdev_dbg(dev, "port %#3lx, irq %d\n" , |
268 | dev->base_addr, dev->irq); |
269 | return 0; |
270 | |
271 | failed: |
272 | dev_dbg(&link->dev, "com20020_config failed...\n" ); |
273 | com20020_release(link); |
274 | return -ENODEV; |
275 | } /* com20020_config */ |
276 | |
277 | static void com20020_release(struct pcmcia_device *link) |
278 | { |
279 | dev_dbg(&link->dev, "com20020_release\n" ); |
280 | pcmcia_disable_device(p_dev: link); |
281 | } |
282 | |
283 | static int com20020_suspend(struct pcmcia_device *link) |
284 | { |
285 | struct com20020_dev *info = link->priv; |
286 | struct net_device *dev = info->dev; |
287 | |
288 | if (link->open) |
289 | netif_device_detach(dev); |
290 | |
291 | return 0; |
292 | } |
293 | |
294 | static int com20020_resume(struct pcmcia_device *link) |
295 | { |
296 | struct com20020_dev *info = link->priv; |
297 | struct net_device *dev = info->dev; |
298 | |
299 | if (link->open) { |
300 | int ioaddr = dev->base_addr; |
301 | struct arcnet_local *lp = netdev_priv(dev); |
302 | |
303 | arcnet_outb(lp->config | 0x80, ioaddr, COM20020_REG_W_CONFIG); |
304 | udelay(5); |
305 | arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG); |
306 | } |
307 | |
308 | return 0; |
309 | } |
310 | |
311 | static const struct pcmcia_device_id com20020_ids[] = { |
312 | PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc." , |
313 | "PCM20 Arcnet Adapter" , 0x59991666, 0x95dfffaf), |
314 | PCMCIA_DEVICE_PROD_ID12("SoHard AG" , |
315 | "SH ARC PCMCIA" , 0xf8991729, 0x69dff0c7), |
316 | PCMCIA_DEVICE_NULL |
317 | }; |
318 | MODULE_DEVICE_TABLE(pcmcia, com20020_ids); |
319 | |
320 | static struct pcmcia_driver com20020_cs_driver = { |
321 | .owner = THIS_MODULE, |
322 | .name = "com20020_cs" , |
323 | .probe = com20020_probe, |
324 | .remove = com20020_detach, |
325 | .id_table = com20020_ids, |
326 | .suspend = com20020_suspend, |
327 | .resume = com20020_resume, |
328 | }; |
329 | module_pcmcia_driver(com20020_cs_driver); |
330 | |