David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1 | /** |
| 2 | * @file me6000_device.c |
| 3 | * |
| 4 | * @brief Device class template implementation. |
| 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 | #ifndef __KERNEL__ |
| 29 | # define __KERNEL__ |
| 30 | #endif |
| 31 | |
| 32 | #ifndef MODULE |
| 33 | # define MODULE |
| 34 | #endif |
| 35 | |
| 36 | #include <linux/module.h> |
| 37 | |
| 38 | #include <linux/pci.h> |
| 39 | #include <linux/slab.h> |
| 40 | |
| 41 | #include "meids.h" |
| 42 | #include "meerror.h" |
| 43 | #include "mecommon.h" |
| 44 | #include "meinternal.h" |
| 45 | |
| 46 | #include "mefirmware.h" |
| 47 | |
| 48 | #include "mesubdevice.h" |
| 49 | #include "medebug.h" |
| 50 | #include "medevice.h" |
| 51 | #include "me6000_reg.h" |
| 52 | #include "me6000_device.h" |
| 53 | #include "meplx_reg.h" |
| 54 | #include "me6000_dio.h" |
| 55 | #include "me6000_ao.h" |
| 56 | |
| 57 | /** |
| 58 | * @brief Global variable. |
| 59 | * This is working queue for runing a separate atask that will be responsible for work status (start, stop, timeouts). |
| 60 | */ |
| 61 | static struct workqueue_struct *me6000_workqueue; |
| 62 | |
| 63 | me_device_t *me6000_pci_constructor(struct pci_dev *pci_device) |
| 64 | { |
| 65 | me6000_device_t *me6000_device; |
| 66 | me_subdevice_t *subdevice; |
| 67 | unsigned int version_idx; |
| 68 | int err; |
| 69 | int i; |
| 70 | int high_range = 0; |
| 71 | int fifo; |
| 72 | |
| 73 | PDEBUG("executed.\n"); |
| 74 | |
| 75 | // Allocate structure for device instance. |
| 76 | me6000_device = kmalloc(sizeof(me6000_device_t), GFP_KERNEL); |
| 77 | |
| 78 | if (!me6000_device) { |
| 79 | PERROR("Cannot get memory for device instance.\n"); |
| 80 | return NULL; |
| 81 | } |
| 82 | |
| 83 | memset(me6000_device, 0, sizeof(me6000_device_t)); |
| 84 | |
| 85 | // Initialize base class structure. |
| 86 | err = me_device_pci_init((me_device_t *) me6000_device, pci_device); |
| 87 | |
| 88 | if (err) { |
| 89 | kfree(me6000_device); |
| 90 | PERROR("Cannot initialize device base class.\n"); |
| 91 | return NULL; |
| 92 | } |
| 93 | |
| 94 | /* Download the xilinx firmware */ |
| 95 | err = me_xilinx_download(me6000_device->base.info.pci.reg_bases[1], |
| 96 | me6000_device->base.info.pci.reg_bases[2], |
| 97 | &pci_device->dev, "me6000.bin"); |
| 98 | |
| 99 | if (err) { |
| 100 | me_device_deinit((me_device_t *) me6000_device); |
| 101 | kfree(me6000_device); |
| 102 | PERROR("Can't download firmware.\n"); |
| 103 | return NULL; |
| 104 | } |
| 105 | |
| 106 | /* Get the index in the device version information table. */ |
| 107 | version_idx = |
| 108 | me6000_versions_get_device_index(me6000_device->base.info.pci. |
| 109 | device_id); |
| 110 | |
| 111 | // Initialize spin lock . |
| 112 | spin_lock_init(&me6000_device->preload_reg_lock); |
| 113 | spin_lock_init(&me6000_device->dio_ctrl_reg_lock); |
| 114 | |
| 115 | /* Create digital input/output instances. */ |
| 116 | for (i = 0; i < me6000_versions[version_idx].dio_subdevices; i++) { |
| 117 | subdevice = |
| 118 | (me_subdevice_t *) me6000_dio_constructor(me6000_device-> |
| 119 | base.info.pci. |
| 120 | reg_bases[3], i, |
| 121 | &me6000_device-> |
| 122 | dio_ctrl_reg_lock); |
| 123 | |
| 124 | if (!subdevice) { |
| 125 | me_device_deinit((me_device_t *) me6000_device); |
| 126 | kfree(me6000_device); |
| 127 | PERROR("Cannot get memory for subdevice.\n"); |
| 128 | return NULL; |
| 129 | } |
| 130 | |
| 131 | me_slist_add_subdevice_tail(&me6000_device->base.slist, |
| 132 | subdevice); |
| 133 | } |
| 134 | |
| 135 | /* Create analog output instances. */ |
| 136 | for (i = 0; i < me6000_versions[version_idx].ao_subdevices; i++) { |
| 137 | high_range = ((i == 8) |
| 138 | && |
| 139 | ((me6000_device->base.info.pci.device_id == |
| 140 | PCI_DEVICE_ID_MEILHAUS_ME6359) |
| 141 | || (me6000_device->base.info.pci.device_id == |
| 142 | PCI_DEVICE_ID_MEILHAUS_ME6259) |
| 143 | ) |
| 144 | )? 1 : 0; |
| 145 | |
| 146 | fifo = |
| 147 | (i < |
| 148 | me6000_versions[version_idx]. |
| 149 | ao_fifo) ? ME6000_AO_HAS_FIFO : 0x0; |
| 150 | fifo |= (i < 4) ? ME6000_AO_EXTRA_HARDWARE : 0x0; |
| 151 | |
| 152 | subdevice = |
| 153 | (me_subdevice_t *) me6000_ao_constructor(me6000_device-> |
| 154 | base.info.pci. |
| 155 | reg_bases[2], |
| 156 | &me6000_device-> |
| 157 | preload_reg_lock, |
| 158 | &me6000_device-> |
| 159 | preload_flags, |
| 160 | &me6000_device-> |
| 161 | triggering_flags, |
| 162 | i, fifo, |
| 163 | me6000_device-> |
| 164 | base.irq, |
| 165 | high_range, |
| 166 | me6000_workqueue); |
| 167 | |
| 168 | if (!subdevice) { |
| 169 | me_device_deinit((me_device_t *) me6000_device); |
| 170 | kfree(me6000_device); |
| 171 | PERROR("Cannot get memory for subdevice.\n"); |
| 172 | return NULL; |
| 173 | } |
| 174 | |
| 175 | me_slist_add_subdevice_tail(&me6000_device->base.slist, |
| 176 | subdevice); |
| 177 | } |
| 178 | |
| 179 | return (me_device_t *) me6000_device; |
| 180 | } |
| 181 | |
| 182 | // Init and exit of module. |
| 183 | |
| 184 | static int __init me6000_init(void) |
| 185 | { |
| 186 | PDEBUG("executed.\n"); |
| 187 | |
| 188 | me6000_workqueue = create_singlethread_workqueue("me6000"); |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static void __exit me6000_exit(void) |
| 193 | { |
| 194 | PDEBUG("executed.\n"); |
| 195 | |
| 196 | flush_workqueue(me6000_workqueue); |
| 197 | destroy_workqueue(me6000_workqueue); |
| 198 | } |
| 199 | |
| 200 | module_init(me6000_init); |
| 201 | module_exit(me6000_exit); |
| 202 | |
| 203 | // Administrative stuff for modinfo. |
| 204 | MODULE_AUTHOR |
| 205 | ("Guenter Gebhardt <g.gebhardt@meilhaus.de> & Krzysztof Gantzke <k.gantzke@meilhaus.de>"); |
| 206 | MODULE_DESCRIPTION("Device Driver Module for ME-6000 Device"); |
| 207 | MODULE_SUPPORTED_DEVICE("Meilhaus ME-6000 Devices"); |
| 208 | MODULE_LICENSE("GPL"); |
| 209 | |
| 210 | // Export the constructor. |
| 211 | EXPORT_SYMBOL(me6000_pci_constructor); |