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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); |
15b99ac1 | 91 | static int parport_config(struct pcmcia_device *link); |
fba395ee | 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 | ||
15b99ac1 | 102 | static int parport_probe(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 | 122 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; |
15b99ac1 | 123 | return parport_config(link); |
1da177e4 LT |
124 | } /* parport_attach */ |
125 | ||
126 | /*====================================================================== | |
127 | ||
128 | This deletes a driver "instance". The device is de-registered | |
129 | with Card Services. If it has been released, all local data | |
130 | structures are freed. Otherwise, the structures will be freed | |
131 | when the device is released. | |
132 | ||
133 | ======================================================================*/ | |
134 | ||
fba395ee | 135 | static void parport_detach(struct pcmcia_device *link) |
1da177e4 | 136 | { |
1da177e4 | 137 | DEBUG(0, "parport_detach(0x%p)\n", link); |
cc3b4866 | 138 | |
1da177e4 LT |
139 | if (link->state & DEV_CONFIG) |
140 | parport_cs_release(link); | |
cc3b4866 | 141 | |
1da177e4 | 142 | kfree(link->priv); |
1da177e4 LT |
143 | } /* parport_detach */ |
144 | ||
145 | /*====================================================================== | |
146 | ||
147 | parport_config() is scheduled to run after a CARD_INSERTION event | |
148 | is received, to configure the PCMCIA socket, and to make the | |
149 | parport device available to the system. | |
150 | ||
151 | ======================================================================*/ | |
152 | ||
153 | #define CS_CHECK(fn, ret) \ | |
154 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
155 | ||
15b99ac1 | 156 | static int parport_config(struct pcmcia_device *link) |
1da177e4 | 157 | { |
1da177e4 LT |
158 | parport_info_t *info = link->priv; |
159 | tuple_t tuple; | |
160 | u_short buf[128]; | |
161 | cisparse_t parse; | |
1da177e4 LT |
162 | cistpl_cftable_entry_t *cfg = &parse.cftable_entry; |
163 | cistpl_cftable_entry_t dflt = { 0 }; | |
164 | struct parport *p; | |
165 | int last_ret, last_fn; | |
166 | ||
167 | DEBUG(0, "parport_config(0x%p)\n", link); | |
168 | ||
169 | tuple.TupleData = (cisdata_t *)buf; | |
170 | tuple.TupleOffset = 0; tuple.TupleDataMax = 255; | |
171 | tuple.Attributes = 0; | |
172 | tuple.DesiredTuple = CISTPL_CONFIG; | |
fba395ee DB |
173 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); |
174 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple)); | |
175 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse)); | |
1da177e4 LT |
176 | link->conf.ConfigBase = parse.config.base; |
177 | link->conf.Present = parse.config.rmask[0]; | |
178 | ||
179 | /* Configure card */ | |
180 | link->state |= DEV_CONFIG; | |
181 | ||
1da177e4 LT |
182 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; |
183 | tuple.Attributes = 0; | |
fba395ee | 184 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); |
1da177e4 | 185 | while (1) { |
fba395ee DB |
186 | if (pcmcia_get_tuple_data(link, &tuple) != 0 || |
187 | pcmcia_parse_tuple(link, &tuple, &parse) != 0) | |
1da177e4 LT |
188 | goto next_entry; |
189 | ||
190 | if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { | |
191 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; | |
192 | link->conf.ConfigIndex = cfg->index; | |
193 | if (epp_mode) | |
194 | link->conf.ConfigIndex |= FORCE_EPP_MODE; | |
195 | link->io.BasePort1 = io->win[0].base; | |
196 | link->io.NumPorts1 = io->win[0].len; | |
197 | link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; | |
198 | if (io->nwin == 2) { | |
199 | link->io.BasePort2 = io->win[1].base; | |
200 | link->io.NumPorts2 = io->win[1].len; | |
201 | } | |
fba395ee | 202 | if (pcmcia_request_io(link, &link->io) != 0) |
1da177e4 LT |
203 | goto next_entry; |
204 | /* If we've got this far, we're done */ | |
205 | break; | |
206 | } | |
207 | ||
208 | next_entry: | |
209 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg; | |
fba395ee | 210 | CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple)); |
1da177e4 LT |
211 | } |
212 | ||
fba395ee DB |
213 | CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); |
214 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); | |
1da177e4 | 215 | |
1da177e4 LT |
216 | p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2, |
217 | link->irq.AssignedIRQ, PARPORT_DMA_NONE, | |
218 | NULL); | |
219 | if (p == NULL) { | |
220 | printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at " | |
221 | "0x%3x, irq %u failed\n", link->io.BasePort1, | |
222 | link->irq.AssignedIRQ); | |
223 | goto failed; | |
224 | } | |
225 | ||
226 | p->modes |= PARPORT_MODE_PCSPP; | |
227 | if (epp_mode) | |
228 | p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP; | |
229 | info->ndev = 1; | |
230 | info->node.major = LP_MAJOR; | |
231 | info->node.minor = p->number; | |
232 | info->port = p; | |
233 | strcpy(info->node.dev_name, p->name); | |
fd238232 | 234 | link->dev_node = &info->node; |
1da177e4 LT |
235 | |
236 | link->state &= ~DEV_CONFIG_PENDING; | |
15b99ac1 DB |
237 | return 0; |
238 | ||
1da177e4 | 239 | cs_failed: |
fba395ee | 240 | cs_error(link, last_fn, last_ret); |
1da177e4 LT |
241 | failed: |
242 | parport_cs_release(link); | |
243 | link->state &= ~DEV_CONFIG_PENDING; | |
15b99ac1 | 244 | return -ENODEV; |
1da177e4 LT |
245 | } /* parport_config */ |
246 | ||
247 | /*====================================================================== | |
248 | ||
249 | After a card is removed, parport_cs_release() will unregister the | |
250 | device, and release the PCMCIA configuration. If the device is | |
251 | still open, this will be postponed until it is closed. | |
252 | ||
253 | ======================================================================*/ | |
254 | ||
fba395ee | 255 | void parport_cs_release(struct pcmcia_device *link) |
1da177e4 | 256 | { |
5f2a71fc | 257 | parport_info_t *info = link->priv; |
1da177e4 | 258 | |
5f2a71fc DB |
259 | DEBUG(0, "parport_release(0x%p)\n", link); |
260 | ||
261 | if (info->ndev) { | |
262 | struct parport *p = info->port; | |
263 | parport_pc_unregister_port(p); | |
264 | } | |
265 | info->ndev = 0; | |
1da177e4 | 266 | |
fba395ee | 267 | pcmcia_disable_device(link); |
1da177e4 LT |
268 | } /* parport_cs_release */ |
269 | ||
98e4c28b | 270 | |
476835af DB |
271 | static struct pcmcia_device_id parport_ids[] = { |
272 | PCMCIA_DEVICE_FUNC_ID(3), | |
273 | PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003), | |
274 | PCMCIA_DEVICE_NULL | |
275 | }; | |
276 | MODULE_DEVICE_TABLE(pcmcia, parport_ids); | |
277 | ||
1da177e4 LT |
278 | static struct pcmcia_driver parport_cs_driver = { |
279 | .owner = THIS_MODULE, | |
280 | .drv = { | |
281 | .name = "parport_cs", | |
282 | }, | |
15b99ac1 | 283 | .probe = parport_probe, |
cc3b4866 | 284 | .remove = parport_detach, |
476835af | 285 | .id_table = parport_ids, |
1da177e4 LT |
286 | }; |
287 | ||
288 | static int __init init_parport_cs(void) | |
289 | { | |
290 | return pcmcia_register_driver(&parport_cs_driver); | |
291 | } | |
292 | ||
293 | static void __exit exit_parport_cs(void) | |
294 | { | |
295 | pcmcia_unregister_driver(&parport_cs_driver); | |
1da177e4 LT |
296 | } |
297 | ||
298 | module_init(init_parport_cs); | |
299 | module_exit(exit_parport_cs); |