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_check(struct pcmcia_device *p_dev,
153 cistpl_cftable_entry_t *cfg,
156 cistpl_cftable_entry_t *dflt = priv_data;
157 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
158 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
159 p_dev->conf.ConfigIndex = cfg->index;
161 p_dev->conf.ConfigIndex |= FORCE_EPP_MODE;
162 p_dev->io.BasePort1 = io->win[0].base;
163 p_dev->io.NumPorts1 = io->win[0].len;
164 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
166 p_dev->io.BasePort2 = io->win[1].base;
167 p_dev->io.NumPorts2 = io->win[1].len;
169 if (pcmcia_request_io(p_dev, &p_dev->io) != 0)
175 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
180 static int parport_config(struct pcmcia_device *link)
182 parport_info_t *info = link->priv;
183 cistpl_cftable_entry_t dflt = { 0 };
185 int last_ret, last_fn;
187 DEBUG(0, "parport_config(0x%p)\n", link);
189 last_ret = pcmcia_loop_config(link, parport_config_check, &dflt);
191 cs_error(link, RequestIO, last_ret);
195 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
196 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
198 p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2,
199 link->irq.AssignedIRQ, PARPORT_DMA_NONE,
202 printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at "
203 "0x%3x, irq %u failed\n", link->io.BasePort1,
204 link->irq.AssignedIRQ);
208 p->modes |= PARPORT_MODE_PCSPP;
210 p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP;
212 info->node.major = LP_MAJOR;
213 info->node.minor = p->number;
215 strcpy(info->node.dev_name, p->name);
216 link->dev_node = &info->node;
221 cs_error(link, last_fn, last_ret);
223 parport_cs_release(link);
225 } /* parport_config */
227 /*======================================================================
229 After a card is removed, parport_cs_release() will unregister the
230 device, and release the PCMCIA configuration. If the device is
231 still open, this will be postponed until it is closed.
233 ======================================================================*/
235 static void parport_cs_release(struct pcmcia_device *link)
237 parport_info_t *info = link->priv;
239 DEBUG(0, "parport_release(0x%p)\n", link);
242 struct parport *p = info->port;
243 parport_pc_unregister_port(p);
247 pcmcia_disable_device(link);
248 } /* parport_cs_release */
251 static struct pcmcia_device_id parport_ids[] = {
252 PCMCIA_DEVICE_FUNC_ID(3),
253 PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc),
254 PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003),
257 MODULE_DEVICE_TABLE(pcmcia, parport_ids);
259 static struct pcmcia_driver parport_cs_driver = {
260 .owner = THIS_MODULE,
262 .name = "parport_cs",
264 .probe = parport_probe,
265 .remove = parport_detach,
266 .id_table = parport_ids,
269 static int __init init_parport_cs(void)
271 return pcmcia_register_driver(&parport_cs_driver);
274 static void __exit exit_parport_cs(void)
276 pcmcia_unregister_driver(&parport_cs_driver);
279 module_init(init_parport_cs);
280 module_exit(exit_parport_cs);