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1da177e4 LT |
1 | /*====================================================================== |
2 | ||
3 | A driver for PCMCIA parallel port adapters | |
4 | ||
5 | (specifically, for the Quatech SPP-100 EPP card: other cards will | |
6 | probably require driver tweaks) | |
7 | ||
8 | parport_cs.c 1.29 2002/10/11 06:57:41 | |
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 | |
26 | which 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/kernel.h> | |
38 | #include <linux/module.h> | |
39 | #include <linux/init.h> | |
40 | #include <linux/sched.h> | |
41 | #include <linux/ptrace.h> | |
42 | #include <linux/slab.h> | |
43 | #include <linux/string.h> | |
44 | #include <linux/timer.h> | |
45 | #include <linux/ioport.h> | |
46 | #include <linux/major.h> | |
47 | ||
48 | #include <linux/parport.h> | |
49 | #include <linux/parport_pc.h> | |
50 | ||
1da177e4 LT |
51 | #include <pcmcia/cs_types.h> |
52 | #include <pcmcia/cs.h> | |
53 | #include <pcmcia/cistpl.h> | |
54 | #include <pcmcia/ds.h> | |
55 | #include <pcmcia/cisreg.h> | |
56 | #include <pcmcia/ciscode.h> | |
57 | ||
58 | /*====================================================================*/ | |
59 | ||
60 | /* Module parameters */ | |
61 | ||
62 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
63 | MODULE_DESCRIPTION("PCMCIA parallel port card driver"); | |
64 | MODULE_LICENSE("Dual MPL/GPL"); | |
65 | ||
66 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) | |
67 | ||
68 | INT_MODULE_PARM(epp_mode, 1); | |
69 | ||
70 | #ifdef PCMCIA_DEBUG | |
71 | INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); | |
72 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
73 | static char *version = | |
74 | "parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)"; | |
75 | #else | |
76 | #define DEBUG(n, args...) | |
77 | #endif | |
78 | ||
79 | /*====================================================================*/ | |
80 | ||
81 | #define FORCE_EPP_MODE 0x08 | |
82 | ||
83 | typedef struct parport_info_t { | |
fd238232 | 84 | struct pcmcia_device *p_dev; |
1da177e4 LT |
85 | int ndev; |
86 | dev_node_t node; | |
87 | struct parport *port; | |
88 | } parport_info_t; | |
89 | ||
cc3b4866 | 90 | static void parport_detach(struct pcmcia_device *p_dev); |
fba395ee DB |
91 | static void parport_config(struct pcmcia_device *link); |
92 | static void parport_cs_release(struct pcmcia_device *); | |
1da177e4 LT |
93 | |
94 | /*====================================================================== | |
95 | ||
96 | parport_attach() creates an "instance" of the driver, allocating | |
97 | local data structures for one device. The device is registered | |
98 | with Card Services. | |
99 | ||
100 | ======================================================================*/ | |
101 | ||
fba395ee | 102 | static int parport_attach(struct pcmcia_device *link) |
1da177e4 LT |
103 | { |
104 | parport_info_t *info; | |
f8cfa618 | 105 | |
1da177e4 LT |
106 | DEBUG(0, "parport_attach()\n"); |
107 | ||
108 | /* Create new parport device */ | |
109 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
f8cfa618 | 110 | if (!info) return -ENOMEM; |
1da177e4 | 111 | memset(info, 0, sizeof(*info)); |
fd238232 | 112 | link->priv = info; |
fba395ee | 113 | info->p_dev = link; |
1da177e4 LT |
114 | |
115 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
116 | link->io.Attributes2 = IO_DATA_PATH_WIDTH_8; | |
117 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
118 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
119 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
1da177e4 | 120 | link->conf.IntType = INT_MEMORY_AND_IO; |
f8cfa618 | 121 | |
f8cfa618 DB |
122 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; |
123 | parport_config(link); | |
124 | ||
125 | return 0; | |
1da177e4 LT |
126 | } /* parport_attach */ |
127 | ||
128 | /*====================================================================== | |
129 | ||
130 | This deletes a driver "instance". The device is de-registered | |
131 | with Card Services. If it has been released, all local data | |
132 | structures are freed. Otherwise, the structures will be freed | |
133 | when the device is released. | |
134 | ||
135 | ======================================================================*/ | |
136 | ||
fba395ee | 137 | static void parport_detach(struct pcmcia_device *link) |
1da177e4 | 138 | { |
1da177e4 | 139 | DEBUG(0, "parport_detach(0x%p)\n", link); |
cc3b4866 | 140 | |
1da177e4 LT |
141 | if (link->state & DEV_CONFIG) |
142 | parport_cs_release(link); | |
cc3b4866 | 143 | |
1da177e4 | 144 | kfree(link->priv); |
1da177e4 LT |
145 | } /* parport_detach */ |
146 | ||
147 | /*====================================================================== | |
148 | ||
149 | parport_config() is scheduled to run after a CARD_INSERTION event | |
150 | is received, to configure the PCMCIA socket, and to make the | |
151 | parport device available to the system. | |
152 | ||
153 | ======================================================================*/ | |
154 | ||
155 | #define CS_CHECK(fn, ret) \ | |
156 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
157 | ||
fba395ee | 158 | void parport_config(struct pcmcia_device *link) |
1da177e4 | 159 | { |
1da177e4 LT |
160 | parport_info_t *info = link->priv; |
161 | tuple_t tuple; | |
162 | u_short buf[128]; | |
163 | cisparse_t parse; | |
1da177e4 LT |
164 | cistpl_cftable_entry_t *cfg = &parse.cftable_entry; |
165 | cistpl_cftable_entry_t dflt = { 0 }; | |
166 | struct parport *p; | |
167 | int last_ret, last_fn; | |
168 | ||
169 | DEBUG(0, "parport_config(0x%p)\n", link); | |
170 | ||
171 | tuple.TupleData = (cisdata_t *)buf; | |
172 | tuple.TupleOffset = 0; tuple.TupleDataMax = 255; | |
173 | tuple.Attributes = 0; | |
174 | tuple.DesiredTuple = CISTPL_CONFIG; | |
fba395ee DB |
175 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); |
176 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple)); | |
177 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse)); | |
1da177e4 LT |
178 | link->conf.ConfigBase = parse.config.base; |
179 | link->conf.Present = parse.config.rmask[0]; | |
180 | ||
181 | /* Configure card */ | |
182 | link->state |= DEV_CONFIG; | |
183 | ||
1da177e4 LT |
184 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; |
185 | tuple.Attributes = 0; | |
fba395ee | 186 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); |
1da177e4 | 187 | while (1) { |
fba395ee DB |
188 | if (pcmcia_get_tuple_data(link, &tuple) != 0 || |
189 | pcmcia_parse_tuple(link, &tuple, &parse) != 0) | |
1da177e4 LT |
190 | goto next_entry; |
191 | ||
192 | if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { | |
193 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; | |
194 | link->conf.ConfigIndex = cfg->index; | |
195 | if (epp_mode) | |
196 | link->conf.ConfigIndex |= FORCE_EPP_MODE; | |
197 | link->io.BasePort1 = io->win[0].base; | |
198 | link->io.NumPorts1 = io->win[0].len; | |
199 | link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; | |
200 | if (io->nwin == 2) { | |
201 | link->io.BasePort2 = io->win[1].base; | |
202 | link->io.NumPorts2 = io->win[1].len; | |
203 | } | |
fba395ee | 204 | if (pcmcia_request_io(link, &link->io) != 0) |
1da177e4 LT |
205 | goto next_entry; |
206 | /* If we've got this far, we're done */ | |
207 | break; | |
208 | } | |
209 | ||
210 | next_entry: | |
211 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg; | |
fba395ee | 212 | CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple)); |
1da177e4 LT |
213 | } |
214 | ||
fba395ee DB |
215 | CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); |
216 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); | |
1da177e4 | 217 | |
1da177e4 LT |
218 | p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2, |
219 | link->irq.AssignedIRQ, PARPORT_DMA_NONE, | |
220 | NULL); | |
221 | if (p == NULL) { | |
222 | printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at " | |
223 | "0x%3x, irq %u failed\n", link->io.BasePort1, | |
224 | link->irq.AssignedIRQ); | |
225 | goto failed; | |
226 | } | |
227 | ||
228 | p->modes |= PARPORT_MODE_PCSPP; | |
229 | if (epp_mode) | |
230 | p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP; | |
231 | info->ndev = 1; | |
232 | info->node.major = LP_MAJOR; | |
233 | info->node.minor = p->number; | |
234 | info->port = p; | |
235 | strcpy(info->node.dev_name, p->name); | |
fd238232 | 236 | link->dev_node = &info->node; |
1da177e4 LT |
237 | |
238 | link->state &= ~DEV_CONFIG_PENDING; | |
239 | return; | |
240 | ||
241 | cs_failed: | |
fba395ee | 242 | cs_error(link, last_fn, last_ret); |
1da177e4 LT |
243 | failed: |
244 | parport_cs_release(link); | |
245 | link->state &= ~DEV_CONFIG_PENDING; | |
246 | ||
247 | } /* parport_config */ | |
248 | ||
249 | /*====================================================================== | |
250 | ||
251 | After a card is removed, parport_cs_release() will unregister the | |
252 | device, and release the PCMCIA configuration. If the device is | |
253 | still open, this will be postponed until it is closed. | |
254 | ||
255 | ======================================================================*/ | |
256 | ||
fba395ee | 257 | void parport_cs_release(struct pcmcia_device *link) |
1da177e4 | 258 | { |
5f2a71fc | 259 | parport_info_t *info = link->priv; |
1da177e4 | 260 | |
5f2a71fc DB |
261 | DEBUG(0, "parport_release(0x%p)\n", link); |
262 | ||
263 | if (info->ndev) { | |
264 | struct parport *p = info->port; | |
265 | parport_pc_unregister_port(p); | |
266 | } | |
267 | info->ndev = 0; | |
1da177e4 | 268 | |
fba395ee | 269 | pcmcia_disable_device(link); |
1da177e4 LT |
270 | } /* parport_cs_release */ |
271 | ||
98e4c28b | 272 | |
476835af DB |
273 | static struct pcmcia_device_id parport_ids[] = { |
274 | PCMCIA_DEVICE_FUNC_ID(3), | |
275 | PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003), | |
276 | PCMCIA_DEVICE_NULL | |
277 | }; | |
278 | MODULE_DEVICE_TABLE(pcmcia, parport_ids); | |
279 | ||
1da177e4 LT |
280 | static struct pcmcia_driver parport_cs_driver = { |
281 | .owner = THIS_MODULE, | |
282 | .drv = { | |
283 | .name = "parport_cs", | |
284 | }, | |
f8cfa618 | 285 | .probe = parport_attach, |
cc3b4866 | 286 | .remove = parport_detach, |
476835af | 287 | .id_table = parport_ids, |
1da177e4 LT |
288 | }; |
289 | ||
290 | static int __init init_parport_cs(void) | |
291 | { | |
292 | return pcmcia_register_driver(&parport_cs_driver); | |
293 | } | |
294 | ||
295 | static void __exit exit_parport_cs(void) | |
296 | { | |
297 | pcmcia_unregister_driver(&parport_cs_driver); | |
1da177e4 LT |
298 | } |
299 | ||
300 | module_init(init_parport_cs); | |
301 | module_exit(exit_parport_cs); |