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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> |
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> |
47 | |
48 | #include <linux/parport.h> |
49 | #include <linux/parport_pc.h> |
50 | |
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 | |
70 | |
71 | /*====================================================================*/ |
72 | |
73 | #define FORCE_EPP_MODE 0x08 |
74 | |
75 | typedef struct parport_info_t { |
76 | struct pcmcia_device *p_dev; |
77 | int ndev; |
78 | dev_node_t node; |
79 | struct parport *port; |
80 | } parport_info_t; |
81 | |
82 | static void parport_detach(struct pcmcia_device *p_dev); |
83 | static int parport_config(struct pcmcia_device *link); |
84 | static void parport_cs_release(struct pcmcia_device *); |
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 | |
94 | static int parport_probe(struct pcmcia_device *link) |
95 | { |
96 | parport_info_t *info; |
97 | |
98 | dev_dbg(&link->dev, "parport_attach()\n"); |
99 | |
100 | /* Create new parport device */ |
101 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
102 | if (!info) return -ENOMEM; |
103 | link->priv = info; |
104 | info->p_dev = link; |
105 | |
106 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; |
107 | link->io.Attributes2 = IO_DATA_PATH_WIDTH_8; |
108 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; |
109 | link->conf.Attributes = CONF_ENABLE_IRQ; |
110 | link->conf.IntType = INT_MEMORY_AND_IO; |
111 | |
112 | return parport_config(link); |
113 | } /* parport_attach */ |
114 | |
115 | /*====================================================================== |
116 | |
117 | This deletes a driver "instance". The device is de-registered |
118 | with Card Services. If it has been released, all local data |
119 | structures are freed. Otherwise, the structures will be freed |
120 | when the device is released. |
121 | |
122 | ======================================================================*/ |
123 | |
124 | static void parport_detach(struct pcmcia_device *link) |
125 | { |
126 | dev_dbg(&link->dev, "parport_detach\n"); |
127 | |
128 | parport_cs_release(link); |
129 | |
130 | kfree(link->priv); |
131 | } /* parport_detach */ |
132 | |
133 | /*====================================================================== |
134 | |
135 | parport_config() is scheduled to run after a CARD_INSERTION event |
136 | is received, to configure the PCMCIA socket, and to make the |
137 | parport device available to the system. |
138 | |
139 | ======================================================================*/ |
140 | |
141 | static int parport_config_check(struct pcmcia_device *p_dev, |
142 | cistpl_cftable_entry_t *cfg, |
143 | cistpl_cftable_entry_t *dflt, |
144 | unsigned int vcc, |
145 | void *priv_data) |
146 | { |
147 | if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { |
148 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; |
149 | if (epp_mode) |
150 | p_dev->conf.ConfigIndex |= FORCE_EPP_MODE; |
151 | p_dev->io.BasePort1 = io->win[0].base; |
152 | p_dev->io.NumPorts1 = io->win[0].len; |
153 | p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; |
154 | if (io->nwin == 2) { |
155 | p_dev->io.BasePort2 = io->win[1].base; |
156 | p_dev->io.NumPorts2 = io->win[1].len; |
157 | } |
158 | if (pcmcia_request_io(p_dev, &p_dev->io) != 0) |
159 | return -ENODEV; |
160 | return 0; |
161 | } |
162 | return -ENODEV; |
163 | } |
164 | |
165 | static int parport_config(struct pcmcia_device *link) |
166 | { |
167 | parport_info_t *info = link->priv; |
168 | struct parport *p; |
169 | int ret; |
170 | |
171 | dev_dbg(&link->dev, "parport_config\n"); |
172 | |
173 | ret = pcmcia_loop_config(link, parport_config_check, NULL); |
174 | if (ret) |
175 | goto failed; |
176 | |
177 | ret = pcmcia_request_irq(link, &link->irq); |
178 | if (ret) |
179 | goto failed; |
180 | ret = pcmcia_request_configuration(link, &link->conf); |
181 | if (ret) |
182 | goto failed; |
183 | |
184 | p = parport_pc_probe_port(link->io.BasePort1, link->io.BasePort2, |
185 | link->irq.AssignedIRQ, PARPORT_DMA_NONE, |
186 | &link->dev, IRQF_SHARED); |
187 | if (p == NULL) { |
188 | printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at " |
189 | "0x%3x, irq %u failed\n", link->io.BasePort1, |
190 | link->irq.AssignedIRQ); |
191 | goto failed; |
192 | } |
193 | |
194 | p->modes |= PARPORT_MODE_PCSPP; |
195 | if (epp_mode) |
196 | p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP; |
197 | info->ndev = 1; |
198 | info->node.major = LP_MAJOR; |
199 | info->node.minor = p->number; |
200 | info->port = p; |
201 | strcpy(info->node.dev_name, p->name); |
202 | link->dev_node = &info->node; |
203 | |
204 | return 0; |
205 | |
206 | failed: |
207 | parport_cs_release(link); |
208 | return -ENODEV; |
209 | } /* parport_config */ |
210 | |
211 | /*====================================================================== |
212 | |
213 | After a card is removed, parport_cs_release() will unregister the |
214 | device, and release the PCMCIA configuration. If the device is |
215 | still open, this will be postponed until it is closed. |
216 | |
217 | ======================================================================*/ |
218 | |
219 | static void parport_cs_release(struct pcmcia_device *link) |
220 | { |
221 | parport_info_t *info = link->priv; |
222 | |
223 | dev_dbg(&link->dev, "parport_release\n"); |
224 | |
225 | if (info->ndev) { |
226 | struct parport *p = info->port; |
227 | parport_pc_unregister_port(p); |
228 | } |
229 | info->ndev = 0; |
230 | |
231 | pcmcia_disable_device(link); |
232 | } /* parport_cs_release */ |
233 | |
234 | |
235 | static struct pcmcia_device_id parport_ids[] = { |
236 | PCMCIA_DEVICE_FUNC_ID(3), |
237 | PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc), |
238 | PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003), |
239 | PCMCIA_DEVICE_NULL |
240 | }; |
241 | MODULE_DEVICE_TABLE(pcmcia, parport_ids); |
242 | |
243 | static struct pcmcia_driver parport_cs_driver = { |
244 | .owner = THIS_MODULE, |
245 | .drv = { |
246 | .name = "parport_cs", |
247 | }, |
248 | .probe = parport_probe, |
249 | .remove = parport_detach, |
250 | .id_table = parport_ids, |
251 | }; |
252 | |
253 | static int __init init_parport_cs(void) |
254 | { |
255 | return pcmcia_register_driver(&parport_cs_driver); |
256 | } |
257 | |
258 | static void __exit exit_parport_cs(void) |
259 | { |
260 | pcmcia_unregister_driver(&parport_cs_driver); |
261 | } |
262 | |
263 | module_init(init_parport_cs); |
264 | module_exit(exit_parport_cs); |
265 |
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