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1da177e4 LT |
1 | /*====================================================================== |
2 | ||
3 | A driver for Future Domain-compatible PCMCIA SCSI cards | |
4 | ||
5 | fdomain_cs.c 1.47 2001/10/13 00:08:52 | |
6 | ||
7 | The contents of this file are subject to the Mozilla Public | |
8 | License Version 1.1 (the "License"); you may not use this file | |
9 | except in compliance with the License. You may obtain a copy of | |
10 | the License at http://www.mozilla.org/MPL/ | |
11 | ||
12 | Software distributed under the License is distributed on an "AS | |
13 | IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
14 | implied. See the License for the specific language governing | |
15 | rights and limitations under the License. | |
16 | ||
17 | The initial developer of the original code is David A. Hinds | |
18 | <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
19 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
20 | ||
21 | Alternatively, the contents of this file may be used under the | |
22 | terms of the GNU General Public License version 2 (the "GPL"), in | |
23 | which case the provisions of the GPL are applicable instead of the | |
24 | above. If you wish to allow the use of your version of this file | |
25 | only under the terms of the GPL and not to allow others to use | |
26 | your version of this file under the MPL, indicate your decision | |
27 | by deleting the provisions above and replace them with the notice | |
28 | and other provisions required by the GPL. If you do not delete | |
29 | the provisions above, a recipient may use your version of this | |
30 | file under either the MPL or the GPL. | |
31 | ||
32 | ======================================================================*/ | |
33 | ||
34 | #include <linux/module.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/kernel.h> | |
37 | #include <linux/sched.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/string.h> | |
40 | #include <linux/ioport.h> | |
41 | #include <scsi/scsi.h> | |
42 | #include <linux/major.h> | |
43 | #include <linux/blkdev.h> | |
44 | #include <scsi/scsi_ioctl.h> | |
45 | ||
46 | #include "scsi.h" | |
47 | #include <scsi/scsi_host.h> | |
48 | #include "fdomain.h" | |
49 | ||
1da177e4 LT |
50 | #include <pcmcia/cs_types.h> |
51 | #include <pcmcia/cs.h> | |
52 | #include <pcmcia/cistpl.h> | |
53 | #include <pcmcia/ds.h> | |
54 | ||
55 | /*====================================================================*/ | |
56 | ||
57 | /* Module parameters */ | |
58 | ||
59 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
60 | MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver"); | |
61 | MODULE_LICENSE("Dual MPL/GPL"); | |
62 | ||
63 | #ifdef PCMCIA_DEBUG | |
64 | static int pc_debug = PCMCIA_DEBUG; | |
65 | module_param(pc_debug, int, 0); | |
66 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
67 | static char *version = | |
68 | "fdomain_cs.c 1.47 2001/10/13 00:08:52 (David Hinds)"; | |
69 | #else | |
70 | #define DEBUG(n, args...) | |
71 | #endif | |
72 | ||
73 | /*====================================================================*/ | |
74 | ||
75 | typedef struct scsi_info_t { | |
76 | dev_link_t link; | |
77 | dev_node_t node; | |
78 | struct Scsi_Host *host; | |
79 | } scsi_info_t; | |
80 | ||
81 | ||
82 | static void fdomain_release(dev_link_t *link); | |
83 | static int fdomain_event(event_t event, int priority, | |
84 | event_callback_args_t *args); | |
85 | ||
86 | static dev_link_t *fdomain_attach(void); | |
87 | static void fdomain_detach(dev_link_t *); | |
88 | ||
89 | ||
90 | static dev_link_t *dev_list = NULL; | |
91 | ||
92 | static dev_info_t dev_info = "fdomain_cs"; | |
93 | ||
94 | static dev_link_t *fdomain_attach(void) | |
95 | { | |
96 | scsi_info_t *info; | |
97 | client_reg_t client_reg; | |
98 | dev_link_t *link; | |
99 | int ret; | |
100 | ||
101 | DEBUG(0, "fdomain_attach()\n"); | |
102 | ||
103 | /* Create new SCSI device */ | |
104 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
105 | if (!info) return NULL; | |
106 | memset(info, 0, sizeof(*info)); | |
107 | link = &info->link; link->priv = info; | |
108 | link->io.NumPorts1 = 0x10; | |
109 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; | |
110 | link->io.IOAddrLines = 10; | |
111 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
112 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
113 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
114 | link->conf.Vcc = 50; | |
115 | link->conf.IntType = INT_MEMORY_AND_IO; | |
116 | link->conf.Present = PRESENT_OPTION; | |
117 | ||
118 | /* Register with Card Services */ | |
119 | link->next = dev_list; | |
120 | dev_list = link; | |
121 | client_reg.dev_info = &dev_info; | |
1da177e4 LT |
122 | client_reg.Version = 0x0210; |
123 | client_reg.event_callback_args.client_data = link; | |
124 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
125 | if (ret != 0) { | |
126 | cs_error(link->handle, RegisterClient, ret); | |
127 | fdomain_detach(link); | |
128 | return NULL; | |
129 | } | |
130 | ||
131 | return link; | |
132 | } /* fdomain_attach */ | |
133 | ||
134 | /*====================================================================*/ | |
135 | ||
136 | static void fdomain_detach(dev_link_t *link) | |
137 | { | |
138 | dev_link_t **linkp; | |
139 | ||
140 | DEBUG(0, "fdomain_detach(0x%p)\n", link); | |
141 | ||
142 | /* Locate device structure */ | |
143 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) | |
144 | if (*linkp == link) break; | |
145 | if (*linkp == NULL) | |
146 | return; | |
147 | ||
148 | if (link->state & DEV_CONFIG) | |
149 | fdomain_release(link); | |
150 | ||
151 | if (link->handle) | |
152 | pcmcia_deregister_client(link->handle); | |
153 | ||
154 | /* Unlink device structure, free bits */ | |
155 | *linkp = link->next; | |
156 | kfree(link->priv); | |
157 | ||
158 | } /* fdomain_detach */ | |
159 | ||
160 | /*====================================================================*/ | |
161 | ||
162 | #define CS_CHECK(fn, ret) \ | |
163 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
164 | ||
165 | static void fdomain_config(dev_link_t *link) | |
166 | { | |
167 | client_handle_t handle = link->handle; | |
168 | scsi_info_t *info = link->priv; | |
169 | tuple_t tuple; | |
170 | cisparse_t parse; | |
171 | int i, last_ret, last_fn; | |
172 | u_char tuple_data[64]; | |
173 | char str[16]; | |
174 | struct Scsi_Host *host; | |
175 | ||
176 | DEBUG(0, "fdomain_config(0x%p)\n", link); | |
177 | ||
178 | tuple.DesiredTuple = CISTPL_CONFIG; | |
179 | tuple.TupleData = tuple_data; | |
180 | tuple.TupleDataMax = 64; | |
181 | tuple.TupleOffset = 0; | |
182 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
183 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
184 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); | |
185 | link->conf.ConfigBase = parse.config.base; | |
186 | ||
187 | /* Configure card */ | |
188 | link->state |= DEV_CONFIG; | |
189 | ||
190 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
191 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
192 | while (1) { | |
193 | if (pcmcia_get_tuple_data(handle, &tuple) != 0 || | |
194 | pcmcia_parse_tuple(handle, &tuple, &parse) != 0) | |
195 | goto next_entry; | |
196 | link->conf.ConfigIndex = parse.cftable_entry.index; | |
197 | link->io.BasePort1 = parse.cftable_entry.io.win[0].base; | |
198 | i = pcmcia_request_io(handle, &link->io); | |
199 | if (i == CS_SUCCESS) break; | |
200 | next_entry: | |
201 | CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple)); | |
202 | } | |
203 | ||
204 | CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq)); | |
205 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf)); | |
206 | ||
207 | /* A bad hack... */ | |
208 | release_region(link->io.BasePort1, link->io.NumPorts1); | |
209 | ||
210 | /* Set configuration options for the fdomain driver */ | |
211 | sprintf(str, "%d,%d", link->io.BasePort1, link->irq.AssignedIRQ); | |
212 | fdomain_setup(str); | |
213 | ||
214 | host = __fdomain_16x0_detect(&fdomain_driver_template); | |
215 | if (!host) { | |
216 | printk(KERN_INFO "fdomain_cs: no SCSI devices found\n"); | |
217 | goto cs_failed; | |
218 | } | |
219 | ||
220 | scsi_add_host(host, NULL); /* XXX handle failure */ | |
221 | scsi_scan_host(host); | |
222 | ||
223 | sprintf(info->node.dev_name, "scsi%d", host->host_no); | |
224 | link->dev = &info->node; | |
225 | info->host = host; | |
226 | ||
227 | link->state &= ~DEV_CONFIG_PENDING; | |
228 | return; | |
229 | ||
230 | cs_failed: | |
231 | cs_error(link->handle, last_fn, last_ret); | |
232 | fdomain_release(link); | |
233 | return; | |
234 | ||
235 | } /* fdomain_config */ | |
236 | ||
237 | /*====================================================================*/ | |
238 | ||
239 | static void fdomain_release(dev_link_t *link) | |
240 | { | |
241 | scsi_info_t *info = link->priv; | |
242 | ||
243 | DEBUG(0, "fdomain_release(0x%p)\n", link); | |
244 | ||
245 | scsi_remove_host(info->host); | |
246 | link->dev = NULL; | |
247 | ||
248 | pcmcia_release_configuration(link->handle); | |
249 | pcmcia_release_io(link->handle, &link->io); | |
250 | pcmcia_release_irq(link->handle, &link->irq); | |
251 | ||
252 | scsi_unregister(info->host); | |
253 | ||
254 | link->state &= ~DEV_CONFIG; | |
255 | } | |
256 | ||
257 | /*====================================================================*/ | |
258 | ||
98e4c28b DB |
259 | static int fdomain_suspend(struct pcmcia_device *dev) |
260 | { | |
261 | dev_link_t *link = dev_to_instance(dev); | |
262 | ||
263 | link->state |= DEV_SUSPEND; | |
264 | if (link->state & DEV_CONFIG) | |
265 | pcmcia_release_configuration(link->handle); | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | static int fdomain_resume(struct pcmcia_device *dev) | |
271 | { | |
272 | dev_link_t *link = dev_to_instance(dev); | |
273 | ||
274 | link->state &= ~DEV_SUSPEND; | |
275 | if (link->state & DEV_CONFIG) { | |
276 | pcmcia_request_configuration(link->handle, &link->conf); | |
277 | fdomain_16x0_bus_reset(NULL); | |
278 | } | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
1da177e4 LT |
283 | static int fdomain_event(event_t event, int priority, |
284 | event_callback_args_t *args) | |
285 | { | |
286 | dev_link_t *link = args->client_data; | |
287 | ||
288 | DEBUG(1, "fdomain_event(0x%06x)\n", event); | |
289 | ||
290 | switch (event) { | |
291 | case CS_EVENT_CARD_REMOVAL: | |
292 | link->state &= ~DEV_PRESENT; | |
293 | if (link->state & DEV_CONFIG) | |
294 | fdomain_release(link); | |
295 | break; | |
296 | case CS_EVENT_CARD_INSERTION: | |
297 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
298 | fdomain_config(link); | |
299 | break; | |
1da177e4 LT |
300 | } |
301 | return 0; | |
302 | } /* fdomain_event */ | |
303 | ||
2d1fb376 DB |
304 | |
305 | static struct pcmcia_device_id fdomain_ids[] = { | |
306 | PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88, 0x859cad20), | |
307 | PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e), | |
308 | PCMCIA_DEVICE_PROD_ID12(" SIMPLE TECHNOLOGY Corporation", "SCSI PCMCIA Credit Card Controller", 0x182bdafe, 0xc80d106f), | |
309 | PCMCIA_DEVICE_NULL, | |
310 | }; | |
311 | MODULE_DEVICE_TABLE(pcmcia, fdomain_ids); | |
312 | ||
1da177e4 LT |
313 | static struct pcmcia_driver fdomain_cs_driver = { |
314 | .owner = THIS_MODULE, | |
315 | .drv = { | |
316 | .name = "fdomain_cs", | |
317 | }, | |
318 | .attach = fdomain_attach, | |
1e212f36 | 319 | .event = fdomain_event, |
1da177e4 | 320 | .detach = fdomain_detach, |
2d1fb376 | 321 | .id_table = fdomain_ids, |
98e4c28b DB |
322 | .suspend = fdomain_suspend, |
323 | .resume = fdomain_resume, | |
1da177e4 LT |
324 | }; |
325 | ||
326 | static int __init init_fdomain_cs(void) | |
327 | { | |
328 | return pcmcia_register_driver(&fdomain_cs_driver); | |
329 | } | |
330 | ||
331 | static void __exit exit_fdomain_cs(void) | |
332 | { | |
333 | pcmcia_unregister_driver(&fdomain_cs_driver); | |
334 | BUG_ON(dev_list != NULL); | |
335 | } | |
336 | ||
337 | module_init(init_fdomain_cs); | |
338 | module_exit(exit_fdomain_cs); |