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1da177e4 LT |
1 | /*====================================================================== |
2 | ||
3 | A driver for Adaptec AHA152X-compatible PCMCIA SCSI cards. | |
4 | ||
5 | This driver supports the Adaptec AHA-1460, the New Media Bus | |
6 | Toaster, and the New Media Toast & Jam. | |
7 | ||
8 | aha152x_cs.c 1.54 2000/06/12 21:27:25 | |
9 | ||
10 | The contents of this file are subject to the Mozilla Public | |
11 | License Version 1.1 (the "License"); you may not use this file | |
12 | except in compliance with the License. You may obtain a copy of | |
13 | the License at http://www.mozilla.org/MPL/ | |
14 | ||
15 | Software distributed under the License is distributed on an "AS | |
16 | IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
17 | implied. See the License for the specific language governing | |
18 | rights and limitations under the License. | |
19 | ||
20 | The initial developer of the original code is David A. Hinds | |
21 | <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
22 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
23 | ||
24 | Alternatively, the contents of this file may be used under the | |
25 | terms of the GNU General Public License version 2 (the "GPL"), in which | |
26 | case the provisions of the GPL are applicable instead of the | |
27 | above. If you wish to allow the use of your version of this file | |
28 | only under the terms of the GPL and not to allow others to use | |
29 | your version of this file under the MPL, indicate your decision | |
30 | by deleting the provisions above and replace them with the notice | |
31 | and other provisions required by the GPL. If you do not delete | |
32 | the provisions above, a recipient may use your version of this | |
33 | file under either the MPL or the GPL. | |
34 | ||
35 | ======================================================================*/ | |
36 | ||
37 | #include <linux/module.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/kernel.h> | |
40 | #include <linux/sched.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/string.h> | |
43 | #include <linux/ioport.h> | |
44 | #include <scsi/scsi.h> | |
45 | #include <linux/major.h> | |
46 | #include <linux/blkdev.h> | |
47 | #include <scsi/scsi_ioctl.h> | |
48 | ||
49 | #include "scsi.h" | |
50 | #include <scsi/scsi_host.h> | |
51 | #include "aha152x.h" | |
52 | ||
53 | #include <pcmcia/version.h> | |
54 | #include <pcmcia/cs_types.h> | |
55 | #include <pcmcia/cs.h> | |
56 | #include <pcmcia/cistpl.h> | |
57 | #include <pcmcia/ds.h> | |
58 | ||
59 | #ifdef PCMCIA_DEBUG | |
60 | static int pc_debug = PCMCIA_DEBUG; | |
61 | module_param(pc_debug, int, 0644); | |
62 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
63 | static char *version = | |
64 | "aha152x_cs.c 1.54 2000/06/12 21:27:25 (David Hinds)"; | |
65 | #else | |
66 | #define DEBUG(n, args...) | |
67 | #endif | |
68 | ||
69 | /*====================================================================*/ | |
70 | ||
71 | /* Parameters that can be set with 'insmod' */ | |
72 | ||
73 | /* SCSI bus setup options */ | |
74 | static int host_id = 7; | |
75 | static int reconnect = 1; | |
76 | static int parity = 1; | |
77 | static int synchronous = 1; | |
78 | static int reset_delay = 100; | |
79 | static int ext_trans = 0; | |
80 | ||
81 | module_param(host_id, int, 0); | |
82 | module_param(reconnect, int, 0); | |
83 | module_param(parity, int, 0); | |
84 | module_param(synchronous, int, 0); | |
85 | module_param(reset_delay, int, 0); | |
86 | module_param(ext_trans, int, 0); | |
87 | ||
88 | MODULE_LICENSE("Dual MPL/GPL"); | |
89 | ||
90 | /*====================================================================*/ | |
91 | ||
92 | typedef struct scsi_info_t { | |
93 | dev_link_t link; | |
94 | dev_node_t node; | |
95 | struct Scsi_Host *host; | |
96 | } scsi_info_t; | |
97 | ||
98 | static void aha152x_release_cs(dev_link_t *link); | |
99 | static int aha152x_event(event_t event, int priority, | |
100 | event_callback_args_t *args); | |
101 | ||
102 | static dev_link_t *aha152x_attach(void); | |
103 | static void aha152x_detach(dev_link_t *); | |
104 | ||
105 | static dev_link_t *dev_list; | |
106 | static dev_info_t dev_info = "aha152x_cs"; | |
107 | ||
108 | static dev_link_t *aha152x_attach(void) | |
109 | { | |
110 | scsi_info_t *info; | |
111 | client_reg_t client_reg; | |
112 | dev_link_t *link; | |
113 | int ret; | |
114 | ||
115 | DEBUG(0, "aha152x_attach()\n"); | |
116 | ||
117 | /* Create new SCSI device */ | |
118 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
119 | if (!info) return NULL; | |
120 | memset(info, 0, sizeof(*info)); | |
121 | link = &info->link; link->priv = info; | |
122 | ||
123 | link->io.NumPorts1 = 0x20; | |
124 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; | |
125 | link->io.IOAddrLines = 10; | |
126 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
127 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
128 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
129 | link->conf.Vcc = 50; | |
130 | link->conf.IntType = INT_MEMORY_AND_IO; | |
131 | link->conf.Present = PRESENT_OPTION; | |
132 | ||
133 | /* Register with Card Services */ | |
134 | link->next = dev_list; | |
135 | dev_list = link; | |
136 | client_reg.dev_info = &dev_info; | |
137 | client_reg.event_handler = &aha152x_event; | |
138 | client_reg.EventMask = | |
139 | CS_EVENT_RESET_REQUEST | CS_EVENT_CARD_RESET | | |
140 | CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | | |
141 | CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; | |
142 | client_reg.Version = 0x0210; | |
143 | client_reg.event_callback_args.client_data = link; | |
144 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
145 | if (ret != 0) { | |
146 | cs_error(link->handle, RegisterClient, ret); | |
147 | aha152x_detach(link); | |
148 | return NULL; | |
149 | } | |
150 | ||
151 | return link; | |
152 | } /* aha152x_attach */ | |
153 | ||
154 | /*====================================================================*/ | |
155 | ||
156 | static void aha152x_detach(dev_link_t *link) | |
157 | { | |
158 | dev_link_t **linkp; | |
159 | ||
160 | DEBUG(0, "aha152x_detach(0x%p)\n", link); | |
161 | ||
162 | /* Locate device structure */ | |
163 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) | |
164 | if (*linkp == link) break; | |
165 | if (*linkp == NULL) | |
166 | return; | |
167 | ||
168 | if (link->state & DEV_CONFIG) | |
169 | aha152x_release_cs(link); | |
170 | ||
171 | if (link->handle) | |
172 | pcmcia_deregister_client(link->handle); | |
173 | ||
174 | /* Unlink device structure, free bits */ | |
175 | *linkp = link->next; | |
176 | kfree(link->priv); | |
177 | ||
178 | } /* aha152x_detach */ | |
179 | ||
180 | /*====================================================================*/ | |
181 | ||
182 | #define CS_CHECK(fn, ret) \ | |
183 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
184 | ||
185 | static void aha152x_config_cs(dev_link_t *link) | |
186 | { | |
187 | client_handle_t handle = link->handle; | |
188 | scsi_info_t *info = link->priv; | |
189 | struct aha152x_setup s; | |
190 | tuple_t tuple; | |
191 | cisparse_t parse; | |
192 | int i, last_ret, last_fn; | |
193 | u_char tuple_data[64]; | |
194 | struct Scsi_Host *host; | |
195 | ||
196 | DEBUG(0, "aha152x_config(0x%p)\n", link); | |
197 | ||
198 | tuple.DesiredTuple = CISTPL_CONFIG; | |
199 | tuple.TupleData = tuple_data; | |
200 | tuple.TupleDataMax = 64; | |
201 | tuple.TupleOffset = 0; | |
202 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
203 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
204 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); | |
205 | link->conf.ConfigBase = parse.config.base; | |
206 | ||
207 | /* Configure card */ | |
208 | link->state |= DEV_CONFIG; | |
209 | ||
210 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
211 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
212 | while (1) { | |
213 | if (pcmcia_get_tuple_data(handle, &tuple) != 0 || | |
214 | pcmcia_parse_tuple(handle, &tuple, &parse) != 0) | |
215 | goto next_entry; | |
216 | /* For New Media T&J, look for a SCSI window */ | |
217 | if (parse.cftable_entry.io.win[0].len >= 0x20) | |
218 | link->io.BasePort1 = parse.cftable_entry.io.win[0].base; | |
219 | else if ((parse.cftable_entry.io.nwin > 1) && | |
220 | (parse.cftable_entry.io.win[1].len >= 0x20)) | |
221 | link->io.BasePort1 = parse.cftable_entry.io.win[1].base; | |
222 | if ((parse.cftable_entry.io.nwin > 0) && | |
223 | (link->io.BasePort1 < 0xffff)) { | |
224 | link->conf.ConfigIndex = parse.cftable_entry.index; | |
225 | i = pcmcia_request_io(handle, &link->io); | |
226 | if (i == CS_SUCCESS) break; | |
227 | } | |
228 | next_entry: | |
229 | CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple)); | |
230 | } | |
231 | ||
232 | CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq)); | |
233 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf)); | |
234 | ||
235 | /* Set configuration options for the aha152x driver */ | |
236 | memset(&s, 0, sizeof(s)); | |
237 | s.conf = "PCMCIA setup"; | |
238 | s.io_port = link->io.BasePort1; | |
239 | s.irq = link->irq.AssignedIRQ; | |
240 | s.scsiid = host_id; | |
241 | s.reconnect = reconnect; | |
242 | s.parity = parity; | |
243 | s.synchronous = synchronous; | |
244 | s.delay = reset_delay; | |
245 | if (ext_trans) | |
246 | s.ext_trans = ext_trans; | |
247 | ||
248 | host = aha152x_probe_one(&s); | |
249 | if (host == NULL) { | |
250 | printk(KERN_INFO "aha152x_cs: no SCSI devices found\n"); | |
251 | goto cs_failed; | |
252 | } | |
253 | ||
254 | sprintf(info->node.dev_name, "scsi%d", host->host_no); | |
255 | link->dev = &info->node; | |
256 | info->host = host; | |
257 | ||
258 | link->state &= ~DEV_CONFIG_PENDING; | |
259 | return; | |
260 | ||
261 | cs_failed: | |
262 | cs_error(link->handle, last_fn, last_ret); | |
263 | aha152x_release_cs(link); | |
264 | return; | |
265 | } | |
266 | ||
267 | static void aha152x_release_cs(dev_link_t *link) | |
268 | { | |
269 | scsi_info_t *info = link->priv; | |
270 | ||
271 | aha152x_release(info->host); | |
272 | link->dev = NULL; | |
273 | ||
274 | pcmcia_release_configuration(link->handle); | |
275 | pcmcia_release_io(link->handle, &link->io); | |
276 | pcmcia_release_irq(link->handle, &link->irq); | |
277 | ||
278 | link->state &= ~DEV_CONFIG; | |
279 | } | |
280 | ||
281 | static int aha152x_event(event_t event, int priority, | |
282 | event_callback_args_t *args) | |
283 | { | |
284 | dev_link_t *link = args->client_data; | |
285 | scsi_info_t *info = link->priv; | |
286 | ||
287 | DEBUG(0, "aha152x_event(0x%06x)\n", event); | |
288 | ||
289 | switch (event) { | |
290 | case CS_EVENT_CARD_REMOVAL: | |
291 | link->state &= ~DEV_PRESENT; | |
292 | if (link->state & DEV_CONFIG) | |
293 | aha152x_release_cs(link); | |
294 | break; | |
295 | case CS_EVENT_CARD_INSERTION: | |
296 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
297 | aha152x_config_cs(link); | |
298 | break; | |
299 | case CS_EVENT_PM_SUSPEND: | |
300 | link->state |= DEV_SUSPEND; | |
301 | /* Fall through... */ | |
302 | case CS_EVENT_RESET_PHYSICAL: | |
303 | if (link->state & DEV_CONFIG) | |
304 | pcmcia_release_configuration(link->handle); | |
305 | break; | |
306 | case CS_EVENT_PM_RESUME: | |
307 | link->state &= ~DEV_SUSPEND; | |
308 | /* Fall through... */ | |
309 | case CS_EVENT_CARD_RESET: | |
310 | if (link->state & DEV_CONFIG) { | |
311 | Scsi_Cmnd tmp; | |
312 | pcmcia_request_configuration(link->handle, &link->conf); | |
313 | tmp.device->host = info->host; | |
314 | aha152x_host_reset(&tmp); | |
315 | } | |
316 | break; | |
317 | } | |
318 | return 0; | |
319 | } | |
320 | ||
321 | static struct pcmcia_driver aha152x_cs_driver = { | |
322 | .owner = THIS_MODULE, | |
323 | .drv = { | |
324 | .name = "aha152x_cs", | |
325 | }, | |
326 | .attach = aha152x_attach, | |
327 | .detach = aha152x_detach, | |
328 | }; | |
329 | ||
330 | static int __init init_aha152x_cs(void) | |
331 | { | |
332 | return pcmcia_register_driver(&aha152x_cs_driver); | |
333 | } | |
334 | ||
335 | static void __exit exit_aha152x_cs(void) | |
336 | { | |
337 | pcmcia_unregister_driver(&aha152x_cs_driver); | |
338 | BUG_ON(dev_list != NULL); | |
339 | } | |
340 | ||
341 | module_init(init_aha152x_cs); | |
342 | module_exit(exit_aha152x_cs); | |
343 |