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1 | /** |
2 | * @file me1400_device.c | |
3 | * | |
4 | * @brief ME-1400 device instance. | |
5 | * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) | |
6 | * @author Guenter Gebhardt | |
7 | * @author Krzysztof Gantzke (k.gantzke@meilhaus.de) | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) | |
12 | * | |
13 | * This file is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | */ | |
27 | ||
28 | /* | |
29 | * User application could also include the kernel header files. But the | |
30 | * real kernel functions are protected by #ifdef __KERNEL__. | |
31 | */ | |
32 | #ifndef __KERNEL__ | |
33 | # define __KERNEL__ | |
34 | #endif | |
35 | ||
36 | /* | |
37 | * This must be defined before module.h is included. Not needed, when | |
38 | * it is a built in driver. | |
39 | */ | |
40 | #ifndef MODULE | |
41 | # define MODULE | |
42 | #endif | |
43 | ||
44 | #include <linux/module.h> | |
45 | ||
46 | #include <linux/pci.h> | |
47 | #include <linux/slab.h> | |
48 | #include <linux/sched.h> | |
49 | #include <linux/interrupt.h> | |
3fedd148 DK |
50 | |
51 | #include "meids.h" | |
52 | #include "meerror.h" | |
53 | #include "mecommon.h" | |
54 | #include "meinternal.h" | |
55 | ||
56 | #include "medebug.h" | |
57 | ||
58 | #include "me1400_device.h" | |
59 | #include "me8254.h" | |
60 | #include "me8254_reg.h" | |
61 | #include "me8255.h" | |
62 | #include "me1400_ext_irq.h" | |
63 | ||
64 | me_device_t *me1400_pci_constructor(struct pci_dev *pci_device) | |
65 | { | |
66 | int err; | |
67 | me1400_device_t *me1400_device; | |
68 | me_subdevice_t *subdevice; | |
69 | unsigned int version_idx; | |
70 | unsigned int me8255_idx; | |
71 | unsigned int dio_idx; | |
72 | unsigned int me8254_idx; | |
73 | unsigned int ctr_idx; | |
74 | unsigned int ext_irq_idx; | |
75 | ||
76 | PDEBUG("executed.\n"); | |
77 | ||
78 | // Allocate structure for device instance. | |
79 | me1400_device = kmalloc(sizeof(me1400_device_t), GFP_KERNEL); | |
80 | ||
81 | if (!me1400_device) { | |
82 | PERROR("Cannot get memory for 1400ate device instance.\n"); | |
83 | return NULL; | |
84 | } | |
85 | ||
86 | memset(me1400_device, 0, sizeof(me1400_device_t)); | |
87 | ||
88 | // Initialize base class structure. | |
89 | err = me_device_pci_init((me_device_t *) me1400_device, pci_device); | |
90 | ||
91 | if (err) { | |
92 | kfree(me1400_device); | |
93 | PERROR("Cannot initialize device base class.\n"); | |
94 | return NULL; | |
95 | } | |
96 | ||
97 | /* Check for ME1400 extension device. If detected we fake a ME-1400 D device id. */ | |
98 | if (me1400_device->base.info.pci.device_id == | |
99 | PCI_DEVICE_ID_MEILHAUS_ME140C) { | |
100 | uint8_t ctrl; | |
101 | ctrl = | |
102 | inb(me1400_device->base.info.pci.reg_bases[2] + | |
103 | ME1400D_CLK_SRC_2_REG); | |
104 | PDEBUG_REG("xxx_reg inb(0x%X+0x%X)=0x%x\n", | |
105 | me1400_device->base.info.pci.reg_bases[2], | |
106 | ME1400D_CLK_SRC_2_REG, ctrl); | |
107 | outb(ctrl | 0xF0, | |
108 | me1400_device->base.info.pci.reg_bases[2] + | |
109 | ME1400D_CLK_SRC_2_REG); | |
110 | PDEBUG_REG("xxx_reg outb(0x%X+0x%X)=0x%x\n", | |
111 | me1400_device->base.info.pci.reg_bases[2], | |
112 | ME1400D_CLK_SRC_2_REG, ctrl | 0xF0); | |
113 | ctrl = | |
114 | inb(me1400_device->base.info.pci.reg_bases[2] + | |
115 | ME1400D_CLK_SRC_2_REG); | |
116 | PDEBUG_REG("xxx_reg inb(0x%X+0x%X)=0x%x\n", | |
117 | me1400_device->base.info.pci.reg_bases[2], | |
118 | ME1400D_CLK_SRC_2_REG, ctrl); | |
119 | ||
120 | if ((ctrl & 0xF0) == 0xF0) { | |
121 | PINFO("ME1400 D detected.\n"); | |
122 | me1400_device->base.info.pci.device_id = | |
123 | PCI_DEVICE_ID_MEILHAUS_ME140D; | |
124 | } | |
125 | } | |
126 | ||
127 | /* Initialize global stuff of digital i/o subdevices. */ | |
128 | for (me8255_idx = 0; me8255_idx < ME1400_MAX_8255; me8255_idx++) { | |
129 | me1400_device->dio_current_mode[me8255_idx] = 0; | |
130 | spin_lock_init(&me1400_device->dio_ctrl_reg_lock[me8255_idx]); | |
131 | } | |
132 | ||
133 | /* Initialize global stuff of counter subdevices. */ | |
134 | spin_lock_init(&me1400_device->clk_src_reg_lock); | |
135 | ||
136 | for (me8254_idx = 0; me8254_idx < ME1400_MAX_8254; me8254_idx++) | |
137 | spin_lock_init(&me1400_device->ctr_ctrl_reg_lock[me8254_idx]); | |
138 | ||
139 | /* Get the index in the device version information table. */ | |
140 | version_idx = | |
141 | me1400_versions_get_device_index(me1400_device->base.info.pci. | |
142 | device_id); | |
143 | ||
144 | /* Generate DIO subdevice instances. */ | |
145 | for (me8255_idx = 0; | |
146 | me8255_idx < me1400_versions[version_idx].dio_chips; | |
147 | me8255_idx++) { | |
148 | for (dio_idx = 0; dio_idx < 3; dio_idx++) { | |
149 | subdevice = | |
150 | (me_subdevice_t *) | |
151 | me8255_constructor(me1400_versions[version_idx]. | |
152 | device_id, | |
153 | me1400_device->base.info.pci. | |
154 | reg_bases[2], me8255_idx, | |
155 | dio_idx, | |
156 | &me1400_device-> | |
157 | dio_current_mode[me8255_idx], | |
158 | &me1400_device-> | |
159 | dio_ctrl_reg_lock[me8255_idx]); | |
160 | ||
161 | if (!subdevice) { | |
162 | me_device_deinit((me_device_t *) me1400_device); | |
163 | kfree(me1400_device); | |
164 | PERROR("Cannot get memory for subdevice.\n"); | |
165 | return NULL; | |
166 | } | |
167 | ||
168 | me_slist_add_subdevice_tail(&me1400_device->base.slist, | |
169 | subdevice); | |
170 | } | |
171 | } | |
172 | ||
173 | /* Generate counter subdevice instances. */ | |
174 | for (me8254_idx = 0; | |
175 | me8254_idx < me1400_versions[version_idx].ctr_chips; | |
176 | me8254_idx++) { | |
177 | for (ctr_idx = 0; ctr_idx < 3; ctr_idx++) { | |
178 | subdevice = | |
179 | (me_subdevice_t *) | |
180 | me8254_constructor(me1400_device->base.info.pci. | |
181 | device_id, | |
182 | me1400_device->base.info.pci. | |
183 | reg_bases[2], me8254_idx, | |
184 | ctr_idx, | |
185 | &me1400_device-> | |
186 | ctr_ctrl_reg_lock[me8254_idx], | |
187 | &me1400_device-> | |
188 | clk_src_reg_lock); | |
189 | ||
190 | if (!subdevice) { | |
191 | me_device_deinit((me_device_t *) me1400_device); | |
192 | kfree(me1400_device); | |
193 | PERROR("Cannot get memory for subdevice.\n"); | |
194 | return NULL; | |
195 | } | |
196 | ||
197 | me_slist_add_subdevice_tail(&me1400_device->base.slist, | |
198 | subdevice); | |
199 | } | |
200 | } | |
201 | ||
202 | /* Generate external interrupt subdevice instances. */ | |
203 | for (ext_irq_idx = 0; | |
204 | ext_irq_idx < me1400_versions[version_idx].ext_irq_subdevices; | |
205 | ext_irq_idx++) { | |
206 | subdevice = | |
207 | (me_subdevice_t *) | |
208 | me1400_ext_irq_constructor(me1400_device->base.info.pci. | |
209 | device_id, | |
210 | me1400_device->base.info.pci. | |
211 | reg_bases[1], | |
212 | me1400_device->base.info.pci. | |
213 | reg_bases[2], | |
214 | &me1400_device->clk_src_reg_lock, | |
215 | me1400_device->base.irq); | |
216 | ||
217 | if (!subdevice) { | |
218 | me_device_deinit((me_device_t *) me1400_device); | |
219 | kfree(me1400_device); | |
220 | PERROR("Cannot get memory for subdevice.\n"); | |
221 | return NULL; | |
222 | } | |
223 | ||
224 | me_slist_add_subdevice_tail(&me1400_device->base.slist, | |
225 | subdevice); | |
226 | } | |
227 | ||
228 | return (me_device_t *) me1400_device; | |
229 | } | |
451084d2 | 230 | EXPORT_SYMBOL(me1400_pci_constructor); |
3fedd148 DK |
231 | |
232 | // Init and exit of module. | |
233 | ||
234 | static int __init me1400_init(void) | |
235 | { | |
236 | PDEBUG("executed.\n"); | |
237 | return 0; | |
238 | } | |
239 | ||
240 | static void __exit me1400_exit(void) | |
241 | { | |
242 | PDEBUG("executed.\n"); | |
243 | } | |
244 | ||
245 | module_init(me1400_init); | |
246 | module_exit(me1400_exit); | |
247 | ||
248 | // Administrative stuff for modinfo. | |
249 | MODULE_AUTHOR | |
250 | ("Guenter Gebhardt <g.gebhardt@meilhaus.de> & Krzysztof Gantzke <k.gantzke@meilhaus.de>"); | |
251 | MODULE_DESCRIPTION("Device Driver Module for Meilhaus ME-14xx devices"); | |
252 | MODULE_SUPPORTED_DEVICE("Meilhaus ME-14xx MIO devices"); | |
253 | MODULE_LICENSE("GPL"); |