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_DESCRIPTION("ARCnet COM20020 chipset PCMCIA driver" ); |
101 | MODULE_LICENSE("GPL" ); |
102 | |
103 | /*====================================================================*/ |
104 | |
105 | static int com20020_config(struct pcmcia_device *link); |
106 | static void com20020_release(struct pcmcia_device *link); |
107 | |
108 | static void com20020_detach(struct pcmcia_device *p_dev); |
109 | |
110 | /*====================================================================*/ |
111 | |
112 | static int com20020_probe(struct pcmcia_device *p_dev) |
113 | { |
114 | struct com20020_dev *info; |
115 | struct net_device *dev; |
116 | struct arcnet_local *lp; |
117 | int ret = -ENOMEM; |
118 | |
119 | dev_dbg(&p_dev->dev, "com20020_attach()\n" ); |
120 | |
121 | /* Create new network device */ |
122 | info = kzalloc(size: sizeof(*info), GFP_KERNEL); |
123 | if (!info) |
124 | goto fail_alloc_info; |
125 | |
126 | dev = alloc_arcdev(name: "" ); |
127 | if (!dev) |
128 | goto fail_alloc_dev; |
129 | |
130 | lp = netdev_priv(dev); |
131 | lp->timeout = timeout; |
132 | lp->backplane = backplane; |
133 | lp->clockp = clockp; |
134 | lp->clockm = clockm & 3; |
135 | lp->hw.owner = THIS_MODULE; |
136 | |
137 | /* fill in our module parameters as defaults */ |
138 | arcnet_set_addr(dev, addr: node); |
139 | |
140 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
141 | p_dev->resource[0]->end = 16; |
142 | p_dev->config_flags |= CONF_ENABLE_IRQ; |
143 | |
144 | info->dev = dev; |
145 | p_dev->priv = info; |
146 | |
147 | ret = com20020_config(link: p_dev); |
148 | if (ret) |
149 | goto fail_config; |
150 | |
151 | return 0; |
152 | |
153 | fail_config: |
154 | free_arcdev(dev); |
155 | fail_alloc_dev: |
156 | kfree(objp: info); |
157 | fail_alloc_info: |
158 | return ret; |
159 | } /* com20020_attach */ |
160 | |
161 | static void com20020_detach(struct pcmcia_device *link) |
162 | { |
163 | struct com20020_dev *info = link->priv; |
164 | struct net_device *dev = info->dev; |
165 | |
166 | dev_dbg(&link->dev, "detach...\n" ); |
167 | |
168 | dev_dbg(&link->dev, "com20020_detach\n" ); |
169 | |
170 | dev_dbg(&link->dev, "unregister...\n" ); |
171 | |
172 | unregister_netdev(dev); |
173 | |
174 | /* this is necessary because we register our IRQ separately |
175 | * from card services. |
176 | */ |
177 | if (dev->irq) |
178 | free_irq(dev->irq, dev); |
179 | |
180 | com20020_release(link); |
181 | |
182 | /* Unlink device structure, free bits */ |
183 | dev_dbg(&link->dev, "unlinking...\n" ); |
184 | if (link->priv) { |
185 | dev = info->dev; |
186 | if (dev) { |
187 | dev_dbg(&link->dev, "kfree...\n" ); |
188 | free_arcdev(dev); |
189 | } |
190 | dev_dbg(&link->dev, "kfree2...\n" ); |
191 | kfree(objp: info); |
192 | } |
193 | |
194 | } /* com20020_detach */ |
195 | |
196 | static int com20020_config(struct pcmcia_device *link) |
197 | { |
198 | struct arcnet_local *lp; |
199 | struct com20020_dev *info; |
200 | struct net_device *dev; |
201 | int i, ret; |
202 | int ioaddr; |
203 | |
204 | info = link->priv; |
205 | dev = info->dev; |
206 | |
207 | dev_dbg(&link->dev, "config...\n" ); |
208 | |
209 | dev_dbg(&link->dev, "com20020_config\n" ); |
210 | |
211 | dev_dbg(&link->dev, "baseport1 is %Xh\n" , |
212 | (unsigned int)link->resource[0]->start); |
213 | |
214 | i = -ENODEV; |
215 | link->io_lines = 16; |
216 | |
217 | if (!link->resource[0]->start) { |
218 | for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10) { |
219 | link->resource[0]->start = ioaddr; |
220 | i = pcmcia_request_io(p_dev: link); |
221 | if (i == 0) |
222 | break; |
223 | } |
224 | } else { |
225 | i = pcmcia_request_io(p_dev: link); |
226 | } |
227 | |
228 | if (i != 0) { |
229 | dev_dbg(&link->dev, "requestIO failed totally!\n" ); |
230 | goto failed; |
231 | } |
232 | |
233 | ioaddr = dev->base_addr = link->resource[0]->start; |
234 | dev_dbg(&link->dev, "got ioaddr %Xh\n" , ioaddr); |
235 | |
236 | dev_dbg(&link->dev, "request IRQ %d\n" , |
237 | link->irq); |
238 | if (!link->irq) { |
239 | dev_dbg(&link->dev, "requestIRQ failed totally!\n" ); |
240 | goto failed; |
241 | } |
242 | |
243 | dev->irq = link->irq; |
244 | |
245 | ret = pcmcia_enable_device(p_dev: link); |
246 | if (ret) |
247 | goto failed; |
248 | |
249 | if (com20020_check(dev)) { |
250 | regdump(dev); |
251 | goto failed; |
252 | } |
253 | |
254 | lp = netdev_priv(dev); |
255 | lp->card_name = "PCMCIA COM20020" ; |
256 | lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */ |
257 | |
258 | SET_NETDEV_DEV(dev, &link->dev); |
259 | |
260 | i = com20020_found(dev, shared: 0); /* calls register_netdev */ |
261 | |
262 | if (i != 0) { |
263 | dev_notice(&link->dev, |
264 | "com20020_found() failed\n" ); |
265 | goto failed; |
266 | } |
267 | |
268 | netdev_dbg(dev, "port %#3lx, irq %d\n" , |
269 | dev->base_addr, dev->irq); |
270 | return 0; |
271 | |
272 | failed: |
273 | dev_dbg(&link->dev, "com20020_config failed...\n" ); |
274 | com20020_release(link); |
275 | return -ENODEV; |
276 | } /* com20020_config */ |
277 | |
278 | static void com20020_release(struct pcmcia_device *link) |
279 | { |
280 | dev_dbg(&link->dev, "com20020_release\n" ); |
281 | pcmcia_disable_device(p_dev: link); |
282 | } |
283 | |
284 | static int com20020_suspend(struct pcmcia_device *link) |
285 | { |
286 | struct com20020_dev *info = link->priv; |
287 | struct net_device *dev = info->dev; |
288 | |
289 | if (link->open) |
290 | netif_device_detach(dev); |
291 | |
292 | return 0; |
293 | } |
294 | |
295 | static int com20020_resume(struct pcmcia_device *link) |
296 | { |
297 | struct com20020_dev *info = link->priv; |
298 | struct net_device *dev = info->dev; |
299 | |
300 | if (link->open) { |
301 | int ioaddr = dev->base_addr; |
302 | struct arcnet_local *lp = netdev_priv(dev); |
303 | |
304 | arcnet_outb(lp->config | 0x80, ioaddr, COM20020_REG_W_CONFIG); |
305 | udelay(5); |
306 | arcnet_outb(lp->config, ioaddr, COM20020_REG_W_CONFIG); |
307 | } |
308 | |
309 | return 0; |
310 | } |
311 | |
312 | static const struct pcmcia_device_id com20020_ids[] = { |
313 | PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc." , |
314 | "PCM20 Arcnet Adapter" , 0x59991666, 0x95dfffaf), |
315 | PCMCIA_DEVICE_PROD_ID12("SoHard AG" , |
316 | "SH ARC PCMCIA" , 0xf8991729, 0x69dff0c7), |
317 | PCMCIA_DEVICE_NULL |
318 | }; |
319 | MODULE_DEVICE_TABLE(pcmcia, com20020_ids); |
320 | |
321 | static struct pcmcia_driver com20020_cs_driver = { |
322 | .owner = THIS_MODULE, |
323 | .name = "com20020_cs" , |
324 | .probe = com20020_probe, |
325 | .remove = com20020_detach, |
326 | .id_table = com20020_ids, |
327 | .suspend = com20020_suspend, |
328 | .resume = com20020_resume, |
329 | }; |
330 | module_pcmcia_driver(com20020_cs_driver); |
331 | |