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/ptrace.h>
41 #include <linux/slab.h>
42 #include <linux/string.h>
43 #include <linux/timer.h>
44 #include <linux/ioport.h>
45 #include <linux/major.h>
47 #include <linux/parport.h>
48 #include <linux/parport_pc.h>
50 #include <pcmcia/cs_types.h>
51 #include <pcmcia/cs.h>
52 #include <pcmcia/cistpl.h>
53 #include <pcmcia/ds.h>
54 #include <pcmcia/cisreg.h>
55 #include <pcmcia/ciscode.h>
57 /*====================================================================*/
59 /* Module parameters */
61 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
62 MODULE_DESCRIPTION("PCMCIA parallel port card driver");
63 MODULE_LICENSE("Dual MPL/GPL");
65 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
67 INT_MODULE_PARM(epp_mode, 1);
70 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
71 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
72 static char *version =
73 "parport_cs.c 1.29 2002/10/11 06:57:41 (David Hinds)";
75 #define DEBUG(n, args...)
78 /*====================================================================*/
80 #define FORCE_EPP_MODE 0x08
82 typedef struct parport_info_t {
83 struct pcmcia_device *p_dev;
89 static void parport_detach(struct pcmcia_device *p_dev);
90 static int parport_config(struct pcmcia_device *link);
91 static void parport_cs_release(struct pcmcia_device *);
93 /*======================================================================
95 parport_attach() creates an "instance" of the driver, allocating
96 local data structures for one device. The device is registered
99 ======================================================================*/
101 static int parport_probe(struct pcmcia_device *link)
103 parport_info_t *info;
105 DEBUG(0, "parport_attach()\n");
107 /* Create new parport device */
108 info = kzalloc(sizeof(*info), GFP_KERNEL);
109 if (!info) return -ENOMEM;
113 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
114 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
115 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
116 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
117 link->conf.Attributes = CONF_ENABLE_IRQ;
118 link->conf.IntType = INT_MEMORY_AND_IO;
120 return parport_config(link);
121 } /* parport_attach */
123 /*======================================================================
125 This deletes a driver "instance". The device is de-registered
126 with Card Services. If it has been released, all local data
127 structures are freed. Otherwise, the structures will be freed
128 when the device is released.
130 ======================================================================*/
132 static void parport_detach(struct pcmcia_device *link)
134 DEBUG(0, "parport_detach(0x%p)\n", link);
136 parport_cs_release(link);
139 } /* parport_detach */
141 /*======================================================================
143 parport_config() is scheduled to run after a CARD_INSERTION event
144 is received, to configure the PCMCIA socket, and to make the
145 parport device available to the system.
147 ======================================================================*/
149 #define CS_CHECK(fn, ret) \
150 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
152 static int parport_config(struct pcmcia_device *link)
154 parport_info_t *info = link->priv;
158 cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
159 cistpl_cftable_entry_t dflt = { 0 };
161 int last_ret, last_fn;
163 DEBUG(0, "parport_config(0x%p)\n", link);
165 tuple.TupleData = (cisdata_t *)buf;
166 tuple.TupleOffset = 0; tuple.TupleDataMax = 255;
167 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
168 tuple.Attributes = 0;
169 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
171 if (pcmcia_get_tuple_data(link, &tuple) != 0 ||
172 pcmcia_parse_tuple(link, &tuple, &parse) != 0)
175 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
176 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
177 link->conf.ConfigIndex = cfg->index;
179 link->conf.ConfigIndex |= FORCE_EPP_MODE;
180 link->io.BasePort1 = io->win[0].base;
181 link->io.NumPorts1 = io->win[0].len;
182 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
184 link->io.BasePort2 = io->win[1].base;
185 link->io.NumPorts2 = io->win[1].len;
187 if (pcmcia_request_io(link, &link->io) != 0)
189 /* If we've got this far, we're done */
194 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg;
195 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple));
198 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
199 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
201 p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
202 link->irq.AssignedIRQ, PARPORT_DMA_NONE,
205 printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
206 "0x%3x, irq %u failed\n", link->io.BasePort1,
207 link->irq.AssignedIRQ);
211 p->modes |= PARPORT_MODE_PCSPP;
213 p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
215 info->node.major = LP_MAJOR;
216 info->node.minor = p->number;
218 strcpy(info->node.dev_name, p->name);
219 link->dev_node = &info->node;
224 cs_error(link, last_fn, last_ret);
226 parport_cs_release(link);
228 } /* parport_config */
230 /*======================================================================
232 After a card is removed, parport_cs_release() will unregister the
233 device, and release the PCMCIA configuration. If the device is
234 still open, this will be postponed until it is closed.
236 ======================================================================*/
238 static void parport_cs_release(struct pcmcia_device *link)
240 parport_info_t *info = link->priv;
242 DEBUG(0, "parport_release(0x%p)\n", link);
245 struct parport *p = info->port;
246 parport_pc_unregister_port(p);
250 pcmcia_disable_device(link);
251 } /* parport_cs_release */
254 static struct pcmcia_device_id parport_ids[] = {
255 PCMCIA_DEVICE_FUNC_ID(3),
256 PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc),
257 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
260 MODULE_DEVICE_TABLE(pcmcia, parport_ids);
262 static struct pcmcia_driver parport_cs_driver = {
263 .owner = THIS_MODULE,
265 .name = "parport_cs",
267 .probe = parport_probe,
268 .remove = parport_detach,
269 .id_table = parport_ids,
272 static int __init init_parport_cs(void)
274 return pcmcia_register_driver(&parport_cs_driver);
277 static void __exit exit_parport_cs(void)
279 pcmcia_unregister_driver(&parport_cs_driver);
282 module_init(init_parport_cs);
283 module_exit(exit_parport_cs);