Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 /**
  2  * @file me4600_device.h
  3  *
  4  * @brief ME-4600 device class.
  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 _ME4600_DEVICE_H
 29 #define _ME4600_DEVICE_H
 30 
 31 #include <linux/pci.h>
 32 #include <linux/spinlock.h>
 33 
 34 #include "medevice.h"
 35 
 36 #ifdef __KERNEL__
 37 
 38 /**
 39  * @brief Structure holding ME-4600 device capabilities.
 40  */
 41 typedef struct me4600_version {
 42         uint16_t device_id;
 43         unsigned int do_subdevices;
 44         unsigned int di_subdevices;
 45         unsigned int dio_subdevices;
 46         unsigned int ctr_subdevices;
 47         unsigned int ai_subdevices;
 48         unsigned int ai_channels;
 49         unsigned int ai_ranges;
 50         unsigned int ai_isolated;
 51         unsigned int ai_sh;
 52         unsigned int ao_subdevices;
 53         unsigned int ao_fifo;   //How many devices have FIFO
 54         unsigned int ext_irq_subdevices;
 55 } me4600_version_t;
 56 
 57 /**
 58  * @brief ME-4600 device capabilities.
 59  */
 60 static me4600_version_t me4600_versions[] = {
 61         {PCI_DEVICE_ID_MEILHAUS_ME4610, 0, 0, 4, 3, 1, 16, 1, 0, 0, 0, 0, 1},
 62 
 63         {PCI_DEVICE_ID_MEILHAUS_ME4650, 0, 0, 4, 0, 1, 16, 4, 0, 0, 0, 0, 1},
 64 
 65         {PCI_DEVICE_ID_MEILHAUS_ME4660, 0, 0, 4, 3, 1, 16, 4, 0, 0, 2, 0, 1},
 66         {PCI_DEVICE_ID_MEILHAUS_ME4660I, 1, 1, 2, 3, 1, 16, 4, 1, 0, 2, 0, 1},
 67         {PCI_DEVICE_ID_MEILHAUS_ME4660S, 0, 0, 4, 3, 1, 16, 4, 0, 1, 2, 0, 1},
 68         {PCI_DEVICE_ID_MEILHAUS_ME4660IS, 1, 1, 2, 3, 1, 16, 4, 1, 1, 2, 0, 1},
 69 
 70         {PCI_DEVICE_ID_MEILHAUS_ME4670, 0, 0, 4, 3, 1, 32, 4, 0, 0, 4, 0, 1},
 71         {PCI_DEVICE_ID_MEILHAUS_ME4670I, 1, 1, 2, 3, 1, 32, 4, 1, 0, 4, 0, 1},
 72         {PCI_DEVICE_ID_MEILHAUS_ME4670S, 0, 0, 4, 3, 1, 32, 4, 0, 1, 4, 0, 1},
 73         {PCI_DEVICE_ID_MEILHAUS_ME4670IS, 1, 1, 2, 3, 1, 32, 4, 1, 1, 4, 0, 1},
 74 
 75         {PCI_DEVICE_ID_MEILHAUS_ME4680, 0, 0, 4, 3, 1, 32, 4, 0, 0, 4, 4, 1},
 76         {PCI_DEVICE_ID_MEILHAUS_ME4680I, 1, 1, 2, 3, 1, 32, 4, 1, 0, 4, 4, 1},
 77         {PCI_DEVICE_ID_MEILHAUS_ME4680S, 0, 0, 4, 3, 1, 32, 4, 0, 1, 4, 4, 1},
 78         {PCI_DEVICE_ID_MEILHAUS_ME4680IS, 1, 1, 2, 3, 1, 32, 4, 1, 1, 4, 4, 1},
 79 
 80         {0},
 81 };
 82 
 83 #define ME4600_DEVICE_VERSIONS (sizeof(me4600_versions) / sizeof(me4600_version_t) - 1) /**< Returns the number of entries in #me4600_versions. */
 84 
 85 /**
 86  * @brief Returns the index of the device entry in #me4600_versions.
 87  *
 88  * @param device_id The PCI device id of the device to query.
 89  * @return The index of the device in #me4600_versions.
 90  */
 91 static inline unsigned int me4600_versions_get_device_index(uint16_t device_id)
 92 {
 93         unsigned int i;
 94         for (i = 0; i < ME4600_DEVICE_VERSIONS; i++)
 95                 if (me4600_versions[i].device_id == device_id)
 96                         break;
 97         return i;
 98 }
 99 
100 /**
101  * @brief The ME-4600 device class structure.
102  */
103 typedef struct me4600_device {
104         me_device_t base;                                       /**< The Meilhaus device base class. */
105 
106         /* Child class attributes. */
107         spinlock_t preload_reg_lock;            /**< Guards the preload register of the anaolog output devices. */
108         unsigned int preload_flags;                     /**< Used in conjunction with #preload_reg_lock. */
109         spinlock_t dio_lock;                            /**< Locks the control register of the digital input/output subdevices. */
110         spinlock_t ai_ctrl_lock;                        /**< Locks the control register of the analog input subdevice. */
111         spinlock_t ctr_ctrl_reg_lock;           /**< Locks the counter control register. */
112         spinlock_t ctr_clk_src_reg_lock;        /**< Not used on this device but needed for the me8254 subdevice constructor call. */
113 } me4600_device_t;
114 
115 /**
116  * @brief The ME-4600 device class constructor.
117  *
118  * @param pci_device The pci device structure given by the PCI subsystem.
119  * @param me_bosch_fw If set the device shall use the bosch firmware. (Only for special BOSCH build)
120  *
121  * @return On succes a new ME-4600 device instance. \n
122  *         NULL on error.
123  */
124 
125 #ifdef BOSCH
126 /**
127  * @brief The ME-4600 device class constructor.
128  *
129  * @param pci_device The pci device structure given by the PCI subsystem.
130  * @param me_bosch_fw If set the device shall use the bosch firmware.
131  *
132  * @return On succes a new ME-4600 device instance. \n
133  *         NULL on error.
134  */
135 me_device_t *me4600_pci_constructor(struct pci_dev *pci_device, int me_bosch_fw)
136     __attribute__ ((weak));
137 #else //~BOSCH
138 /**
139  * @brief The ME-4600 device class constructor.
140  *
141  * @param pci_device The pci device structure given by the PCI subsystem.
142  *
143  * @return On succes a new ME-4600 device instance. \n
144  *         NULL on error.
145  */
146 me_device_t *me4600_pci_constructor(struct pci_dev *pci_device)
147     __attribute__ ((weak));
148 #endif
149 
150 #endif
151 #endif
152 
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