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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> | |
1da177e4 LT |
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> | |
51dcdfec | 46 | #include <linux/interrupt.h> |
1da177e4 LT |
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 | ||
1da177e4 LT |
70 | |
71 | /*====================================================================*/ | |
72 | ||
73 | #define FORCE_EPP_MODE 0x08 | |
74 | ||
75 | typedef struct parport_info_t { | |
fd238232 | 76 | struct pcmcia_device *p_dev; |
1da177e4 LT |
77 | int ndev; |
78 | dev_node_t node; | |
79 | struct parport *port; | |
80 | } parport_info_t; | |
81 | ||
cc3b4866 | 82 | static void parport_detach(struct pcmcia_device *p_dev); |
15b99ac1 | 83 | static int parport_config(struct pcmcia_device *link); |
fba395ee | 84 | static void parport_cs_release(struct pcmcia_device *); |
1da177e4 LT |
85 | |
86 | /*====================================================================== | |
87 | ||
88 | parport_attach() creates an "instance" of the driver, allocating | |
89 | local data structures for one device. The device is registered | |
90 | with Card Services. | |
91 | ||
92 | ======================================================================*/ | |
93 | ||
15b99ac1 | 94 | static int parport_probe(struct pcmcia_device *link) |
1da177e4 LT |
95 | { |
96 | parport_info_t *info; | |
f8cfa618 | 97 | |
9b44de20 | 98 | dev_dbg(&link->dev, "parport_attach()\n"); |
1da177e4 LT |
99 | |
100 | /* Create new parport device */ | |
dd00cc48 | 101 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
f8cfa618 | 102 | if (!info) return -ENOMEM; |
fd238232 | 103 | link->priv = info; |
fba395ee | 104 | info->p_dev = link; |
1da177e4 LT |
105 | |
106 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
107 | link->io.Attributes2 = IO_DATA_PATH_WIDTH_8; | |
1da177e4 | 108 | link->conf.Attributes = CONF_ENABLE_IRQ; |
1da177e4 | 109 | link->conf.IntType = INT_MEMORY_AND_IO; |
f8cfa618 | 110 | |
15b99ac1 | 111 | return parport_config(link); |
1da177e4 LT |
112 | } /* parport_attach */ |
113 | ||
114 | /*====================================================================== | |
115 | ||
116 | This deletes a driver "instance". The device is de-registered | |
117 | with Card Services. If it has been released, all local data | |
118 | structures are freed. Otherwise, the structures will be freed | |
119 | when the device is released. | |
120 | ||
121 | ======================================================================*/ | |
122 | ||
fba395ee | 123 | static void parport_detach(struct pcmcia_device *link) |
1da177e4 | 124 | { |
9b44de20 | 125 | dev_dbg(&link->dev, "parport_detach\n"); |
cc3b4866 | 126 | |
e2d40963 | 127 | parport_cs_release(link); |
cc3b4866 | 128 | |
1da177e4 | 129 | kfree(link->priv); |
1da177e4 LT |
130 | } /* parport_detach */ |
131 | ||
132 | /*====================================================================== | |
133 | ||
134 | parport_config() is scheduled to run after a CARD_INSERTION event | |
135 | is received, to configure the PCMCIA socket, and to make the | |
136 | parport device available to the system. | |
137 | ||
138 | ======================================================================*/ | |
139 | ||
84e2d340 DB |
140 | static int parport_config_check(struct pcmcia_device *p_dev, |
141 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 142 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 143 | unsigned int vcc, |
84e2d340 DB |
144 | void *priv_data) |
145 | { | |
84e2d340 DB |
146 | if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { |
147 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; | |
84e2d340 DB |
148 | if (epp_mode) |
149 | p_dev->conf.ConfigIndex |= FORCE_EPP_MODE; | |
150 | p_dev->io.BasePort1 = io->win[0].base; | |
151 | p_dev->io.NumPorts1 = io->win[0].len; | |
152 | p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; | |
153 | if (io->nwin == 2) { | |
154 | p_dev->io.BasePort2 = io->win[1].base; | |
155 | p_dev->io.NumPorts2 = io->win[1].len; | |
156 | } | |
157 | if (pcmcia_request_io(p_dev, &p_dev->io) != 0) | |
8e2fc39d | 158 | return -ENODEV; |
84e2d340 DB |
159 | return 0; |
160 | } | |
ad913c11 | 161 | return -ENODEV; |
84e2d340 DB |
162 | } |
163 | ||
15b99ac1 | 164 | static int parport_config(struct pcmcia_device *link) |
1da177e4 | 165 | { |
1da177e4 | 166 | parport_info_t *info = link->priv; |
1da177e4 | 167 | struct parport *p; |
9b44de20 | 168 | int ret; |
84e2d340 | 169 | |
9b44de20 | 170 | dev_dbg(&link->dev, "parport_config\n"); |
84e2d340 | 171 | |
9b44de20 DB |
172 | ret = pcmcia_loop_config(link, parport_config_check, NULL); |
173 | if (ret) | |
84e2d340 | 174 | goto failed; |
84e2d340 | 175 | |
eb14120f | 176 | if (!link->irq) |
9b44de20 DB |
177 | goto failed; |
178 | ret = pcmcia_request_configuration(link, &link->conf); | |
179 | if (ret) | |
180 | goto failed; | |
1da177e4 | 181 | |
1da177e4 | 182 | p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2, |
eb14120f | 183 | link->irq, PARPORT_DMA_NONE, |
51dcdfec | 184 | &link->dev, IRQF_SHARED); |
1da177e4 LT |
185 | if (p == NULL) { |
186 | printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at " | |
187 | "0x%3x, irq %u failed\n", link->io.BasePort1, | |
eb14120f | 188 | link->irq); |
1da177e4 LT |
189 | goto failed; |
190 | } | |
191 | ||
192 | p->modes |= PARPORT_MODE_PCSPP; | |
193 | if (epp_mode) | |
194 | p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP; | |
195 | info->ndev = 1; | |
196 | info->node.major = LP_MAJOR; | |
197 | info->node.minor = p->number; | |
198 | info->port = p; | |
199 | strcpy(info->node.dev_name, p->name); | |
fd238232 | 200 | link->dev_node = &info->node; |
1da177e4 | 201 | |
15b99ac1 DB |
202 | return 0; |
203 | ||
1da177e4 LT |
204 | failed: |
205 | parport_cs_release(link); | |
15b99ac1 | 206 | return -ENODEV; |
1da177e4 LT |
207 | } /* parport_config */ |
208 | ||
209 | /*====================================================================== | |
210 | ||
211 | After a card is removed, parport_cs_release() will unregister the | |
212 | device, and release the PCMCIA configuration. If the device is | |
213 | still open, this will be postponed until it is closed. | |
214 | ||
215 | ======================================================================*/ | |
216 | ||
23d5f96c | 217 | static void parport_cs_release(struct pcmcia_device *link) |
1da177e4 | 218 | { |
5f2a71fc | 219 | parport_info_t *info = link->priv; |
1da177e4 | 220 | |
9b44de20 | 221 | dev_dbg(&link->dev, "parport_release\n"); |
5f2a71fc DB |
222 | |
223 | if (info->ndev) { | |
224 | struct parport *p = info->port; | |
225 | parport_pc_unregister_port(p); | |
226 | } | |
227 | info->ndev = 0; | |
1da177e4 | 228 | |
fba395ee | 229 | pcmcia_disable_device(link); |
1da177e4 LT |
230 | } /* parport_cs_release */ |
231 | ||
98e4c28b | 232 | |
476835af DB |
233 | static struct pcmcia_device_id parport_ids[] = { |
234 | PCMCIA_DEVICE_FUNC_ID(3), | |
44e5e33e | 235 | PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc), |
476835af DB |
236 | PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003), |
237 | PCMCIA_DEVICE_NULL | |
238 | }; | |
239 | MODULE_DEVICE_TABLE(pcmcia, parport_ids); | |
240 | ||
1da177e4 LT |
241 | static struct pcmcia_driver parport_cs_driver = { |
242 | .owner = THIS_MODULE, | |
243 | .drv = { | |
244 | .name = "parport_cs", | |
245 | }, | |
15b99ac1 | 246 | .probe = parport_probe, |
cc3b4866 | 247 | .remove = parport_detach, |
476835af | 248 | .id_table = parport_ids, |
1da177e4 LT |
249 | }; |
250 | ||
251 | static int __init init_parport_cs(void) | |
252 | { | |
253 | return pcmcia_register_driver(&parport_cs_driver); | |
254 | } | |
255 | ||
256 | static void __exit exit_parport_cs(void) | |
257 | { | |
258 | pcmcia_unregister_driver(&parport_cs_driver); | |
1da177e4 LT |
259 | } |
260 | ||
261 | module_init(init_parport_cs); | |
262 | module_exit(exit_parport_cs); |