1 /*======================================================================
3 A driver for PCMCIA parallel port adapters
5 (specifically, for the Quatech SPP-100 EPP card: other cards will
6 probably require driver tweaks)
8 parport_cs.c 1.29 2002/10/11 06:57:41
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/
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.
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.
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.
35 ======================================================================*/
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>
48 #include <linux/parport.h>
49 #include <linux/parport_pc.h>
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>
58 /*====================================================================*/
60 /* Module parameters */
62 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
63 MODULE_DESCRIPTION("PCMCIA parallel port card driver");
64 MODULE_LICENSE("Dual MPL/GPL");
66 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
68 INT_MODULE_PARM(epp_mode, 1);
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)";
76 #define DEBUG(n, args...)
79 /*====================================================================*/
81 #define FORCE_EPP_MODE 0x08
83 typedef struct parport_info_t {
84 struct pcmcia_device *p_dev;
90 static void parport_detach(struct pcmcia_device *p_dev);
91 static int parport_config(struct pcmcia_device *link);
92 static void parport_cs_release(struct pcmcia_device *);
94 /*======================================================================
96 parport_attach() creates an "instance" of the driver, allocating
97 local data structures for one device. The device is registered
100 ======================================================================*/
102 static int parport_probe(struct pcmcia_device *link)
104 parport_info_t *info;
106 DEBUG(0, "parport_attach()\n");
108 /* Create new parport device */
109 info = kmalloc(sizeof(*info), GFP_KERNEL);
110 if (!info) return -ENOMEM;
111 memset(info, 0, sizeof(*info));
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;
120 link->conf.IntType = INT_MEMORY_AND_IO;
122 return parport_config(link);
123 } /* parport_attach */
125 /*======================================================================
127 This deletes a driver "instance". The device is de-registered
128 with Card Services. If it has been released, all local data
129 structures are freed. Otherwise, the structures will be freed
130 when the device is released.
132 ======================================================================*/
134 static void parport_detach(struct pcmcia_device *link)
136 DEBUG(0, "parport_detach(0x%p)\n", link);
138 parport_cs_release(link);
141 } /* parport_detach */
143 /*======================================================================
145 parport_config() is scheduled to run after a CARD_INSERTION event
146 is received, to configure the PCMCIA socket, and to make the
147 parport device available to the system.
149 ======================================================================*/
151 #define CS_CHECK(fn, ret) \
152 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
154 static int parport_config(struct pcmcia_device *link)
156 parport_info_t *info = link->priv;
160 cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
161 cistpl_cftable_entry_t dflt = { 0 };
163 int last_ret, last_fn;
165 DEBUG(0, "parport_config(0x%p)\n", link);
167 tuple.TupleData = (cisdata_t *)buf;
168 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
169 tuple.Attributes = 0;
170 tuple.DesiredTuple = CISTPL_CONFIG;
171 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
172 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
173 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
174 link->conf.ConfigBase = parse.config.base;
175 link->conf.Present = parse.config.rmask[0];
177 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
178 tuple.Attributes = 0;
179 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
181 if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
182 pcmcia_parse_tuple(link, &tuple, &parse) != 0)
185 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
186 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
187 link->conf.ConfigIndex = cfg->index;
189 link->conf.ConfigIndex |= FORCE_EPP_MODE;
190 link->io.BasePort1 = io->win[0].base;
191 link->io.NumPorts1 = io->win[0].len;
192 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
194 link->io.BasePort2 = io->win[1].base;
195 link->io.NumPorts2 = io->win[1].len;
197 if (pcmcia_request_io(link, &link->io) != 0)
199 /* If we've got this far, we're done */
204 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
205 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple));
208 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
209 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
211 p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
212 link->irq.AssignedIRQ, PARPORT_DMA_NONE,
215 printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
216 "0x%3x, irq %u failed\n", link->io.BasePort1,
217 link->irq.AssignedIRQ);
221 p->modes |= PARPORT_MODE_PCSPP;
223 p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
225 info->node.major = LP_MAJOR;
226 info->node.minor = p->number;
228 strcpy(info->node.dev_name, p->name);
229 link->dev_node = &info->node;
234 cs_error(link, last_fn, last_ret);
236 parport_cs_release(link);
238 } /* parport_config */
240 /*======================================================================
242 After a card is removed, parport_cs_release() will unregister the
243 device, and release the PCMCIA configuration. If the device is
244 still open, this will be postponed until it is closed.
246 ======================================================================*/
248 void parport_cs_release(struct pcmcia_device *link)
250 parport_info_t *info = link->priv;
252 DEBUG(0, "parport_release(0x%p)\n", link);
255 struct parport *p = info->port;
256 parport_pc_unregister_port(p);
260 pcmcia_disable_device(link);
261 } /* parport_cs_release */
264 static struct pcmcia_device_id parport_ids[] = {
265 PCMCIA_DEVICE_FUNC_ID(3),
266 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
269 MODULE_DEVICE_TABLE(pcmcia, parport_ids);
271 static struct pcmcia_driver parport_cs_driver = {
272 .owner = THIS_MODULE,
274 .name = "parport_cs",
276 .probe = parport_probe,
277 .remove = parport_detach,
278 .id_table = parport_ids,
281 static int __init init_parport_cs(void)
283 return pcmcia_register_driver(&parport_cs_driver);
286 static void __exit exit_parport_cs(void)
288 pcmcia_unregister_driver(&parport_cs_driver);
291 module_init(init_parport_cs);
292 module_exit(exit_parport_cs);