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>
46 #include <linux/interrupt.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 = kzalloc(sizeof(*info), GFP_KERNEL);
110 if (!info) return -ENOMEM;
114 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
115 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
116 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
117 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
118 link->conf.Attributes = CONF_ENABLE_IRQ;
119 link->conf.IntType = INT_MEMORY_AND_IO;
121 return parport_config(link);
122 } /* parport_attach */
124 /*======================================================================
126 This deletes a driver "instance". The device is de-registered
127 with Card Services. If it has been released, all local data
128 structures are freed. Otherwise, the structures will be freed
129 when the device is released.
131 ======================================================================*/
133 static void parport_detach(struct pcmcia_device *link)
135 DEBUG(0, "parport_detach(0x%p)\n", link);
137 parport_cs_release(link);
140 } /* parport_detach */
142 /*======================================================================
144 parport_config() is scheduled to run after a CARD_INSERTION event
145 is received, to configure the PCMCIA socket, and to make the
146 parport device available to the system.
148 ======================================================================*/
150 #define CS_CHECK(fn, ret) \
151 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
153 static int parport_config_check(struct pcmcia_device *p_dev,
154 cistpl_cftable_entry_t *cfg,
155 cistpl_cftable_entry_t *dflt,
159 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
160 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
162 p_dev->conf.ConfigIndex |= FORCE_EPP_MODE;
163 p_dev->io.BasePort1 = io->win[0].base;
164 p_dev->io.NumPorts1 = io->win[0].len;
165 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
167 p_dev->io.BasePort2 = io->win[1].base;
168 p_dev->io.NumPorts2 = io->win[1].len;
170 if (pcmcia_request_io(p_dev, &p_dev->io) != 0)
177 static int parport_config(struct pcmcia_device *link)
179 parport_info_t *info = link->priv;
181 int last_ret, last_fn;
183 DEBUG(0, "parport_config(0x%p)\n", link);
185 last_ret = pcmcia_loop_config(link, parport_config_check, NULL);
187 cs_error(link, RequestIO, last_ret);
191 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
192 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
194 p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
195 link->irq.AssignedIRQ, PARPORT_DMA_NONE,
196 &link->dev, IRQF_SHARED);
198 printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
199 "0x%3x, irq %u failed\n", link->io.BasePort1,
200 link->irq.AssignedIRQ);
204 p->modes |= PARPORT_MODE_PCSPP;
206 p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
208 info->node.major = LP_MAJOR;
209 info->node.minor = p->number;
211 strcpy(info->node.dev_name, p->name);
212 link->dev_node = &info->node;
217 cs_error(link, last_fn, last_ret);
219 parport_cs_release(link);
221 } /* parport_config */
223 /*======================================================================
225 After a card is removed, parport_cs_release() will unregister the
226 device, and release the PCMCIA configuration. If the device is
227 still open, this will be postponed until it is closed.
229 ======================================================================*/
231 static void parport_cs_release(struct pcmcia_device *link)
233 parport_info_t *info = link->priv;
235 DEBUG(0, "parport_release(0x%p)\n", link);
238 struct parport *p = info->port;
239 parport_pc_unregister_port(p);
243 pcmcia_disable_device(link);
244 } /* parport_cs_release */
247 static struct pcmcia_device_id parport_ids[] = {
248 PCMCIA_DEVICE_FUNC_ID(3),
249 PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc),
250 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
253 MODULE_DEVICE_TABLE(pcmcia, parport_ids);
255 static struct pcmcia_driver parport_cs_driver = {
256 .owner = THIS_MODULE,
258 .name = "parport_cs",
260 .probe = parport_probe,
261 .remove = parport_detach,
262 .id_table = parport_ids,
265 static int __init init_parport_cs(void)
267 return pcmcia_register_driver(&parport_cs_driver);
270 static void __exit exit_parport_cs(void)
272 pcmcia_unregister_driver(&parport_cs_driver);
275 module_init(init_parport_cs);
276 module_exit(exit_parport_cs);