kernel/2.6.29.6-aldebaran-rt/drivers/staging/meilhaus/me4600_ao.h

   1 /**
   2  * @file me4600_ao.h
   3  *
   4  * @brief Meilhaus ME-4000 analog output subdevice class.
   5  * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
   6  * @author Guenter Gebhardt
   7  */
   8
   9 /*
  10  * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
  11  *
  12  * This file is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #ifndef _ME4600_AO_H_
  28 # define _ME4600_AO_H_
  29
  30 # include <linux/version.h>
  31 # include "mesubdevice.h"
  32 # include "mecirc_buf.h"
  33 # include "meioctl.h"
  34
  35 # ifdef __KERNEL__
  36
  37 #  ifdef BOSCH
  38 #   undef ME_SYNAPSE
  39 #   ifndef _CBUFF_32b_t
  40 #        define _CBUFF_32b_t
  41 #   endif //_CBUFF_32b_t
  42 #  endif //BOSCH
  43
  44 #  define ME4600_AO_MAX_SUBDEVICES              4
  45 #  define ME4600_AO_FIFO_COUNT                  4096
  46
  47 #  define ME4600_AO_BASE_FREQUENCY              33000000LL
  48
  49 #  define ME4600_AO_MIN_ACQ_TICKS               0LL
  50 #  define ME4600_AO_MAX_ACQ_TICKS               0LL
  51
  52 #  define ME4600_AO_MIN_CHAN_TICKS              66LL
  53 #  define ME4600_AO_MAX_CHAN_TICKS              0xFFFFFFFFLL
  54
  55 #  define ME4600_AO_MIN_RANGE                   -10000000
  56 #  define ME4600_AO_MAX_RANGE                   9999694
  57
  58 #  define ME4600_AO_MAX_DATA                    0xFFFF
  59
  60 #  ifdef ME_SYNAPSE
  61 #   define ME4600_AO_CIRC_BUF_SIZE_ORDER                8       // 2^n PAGES =>> Maximum value of 1MB for Synapse
  62 #  else
  63 #   define ME4600_AO_CIRC_BUF_SIZE_ORDER                5       // 2^n PAGES =>> 128KB
  64 #  endif
  65 #  define ME4600_AO_CIRC_BUF_SIZE               PAGE_SIZE<<ME4600_AO_CIRC_BUF_SIZE_ORDER        // Buffer size in bytes.
  66
  67 #  ifdef _CBUFF_32b_t
  68 #   define ME4600_AO_CIRC_BUF_COUNT     ((ME4600_AO_CIRC_BUF_SIZE) / sizeof(uint32_t))  // Size in values
  69 #  else
  70 #   define ME4600_AO_CIRC_BUF_COUNT     ((ME4600_AO_CIRC_BUF_SIZE) / sizeof(uint16_t))  // Size in values
  71 #  endif
  72
  73 #  define ME4600_AO_CONTINOUS                                   0x0
  74 #  define ME4600_AO_WRAP_MODE                                   0x1
  75 #  define ME4600_AO_HW_MODE                                             0x2
  76
  77 #  define ME4600_AO_HW_WRAP_MODE                                (ME4600_AO_WRAP_MODE | ME4600_AO_HW_MODE)
  78 #  define ME4600_AO_SW_WRAP_MODE                                ME4600_AO_WRAP_MODE
  79
  80 #  define ME4600_AO_INF_STOP_MODE                               0x0
  81 #  define ME4600_AO_ACQ_STOP_MODE                               0x1
  82 #  define ME4600_AO_SCAN_STOP_MODE                              0x2
  83
  84 #  ifdef BOSCH                  //SPECIAL BUILD FOR BOSCH
  85
  86 /* Bits for flags attribute. */
  87 #   define ME4600_AO_FLAGS_BROKEN_PIPE                  0x1
  88 #   define ME4600_AO_FLAGS_SW_WRAP_MODE_0               0x2
  89 #   define ME4600_AO_FLAGS_SW_WRAP_MODE_1               0x4
  90 #   define ME4600_AO_FLAGS_SW_WRAP_MODE_MASK    (ME4600_AO_FLAGS_SW_WRAP_MODE_0 | ME4600_AO_FLAGS_SW_WRAP_MODE_1)
  91
  92 #   define ME4600_AO_FLAGS_SW_WRAP_MODE_NONE    0x0
  93 #   define ME4600_AO_FLAGS_SW_WRAP_MODE_INF             0x2
  94 #   define ME4600_AO_FLAGS_SW_WRAP_MODE_FIN             0x4
  95
  96         /**
  97         * @brief The ME-4000 analog output subdevice class.
  98         */
  99 typedef struct me4600_ao_subdevice {
 100         /* Inheritance */
 101         me_subdevice_t base;                            /**< The subdevice base class. */
 102
 103         /* Attributes */
 104         spinlock_t subdevice_lock;                      /**< Spin lock to protect the subdevice from concurrent access. */
 105         spinlock_t *preload_reg_lock;           /**< Spin lock to protect #preload_reg from concurrent access. */
 106         uint32_t *preload_flags;
 107
 108         unsigned int irq;                                       /**< The interrupt request number assigned by the PCI BIOS. */
 109         me_circ_buf_t circ_buf;                         /**< Circular buffer holding measurment data. */
 110         wait_queue_head_t wait_queue;           /**< Wait queue to put on tasks waiting for data to arrive. */
 111
 112         int single_value;                                       /**< Mirror of the value written in single mode. */
 113
 114         int volatile flags;                                     /**< Flags used for storing SW wraparound setup and error signalling from ISR. */
 115         unsigned int wrap_count;                        /**< The user defined wraparound cycle count. */
 116         unsigned int wrap_remaining;            /**< The wraparound cycle down counter used by a running conversion. */
 117         unsigned int ao_idx;                            /**< The index of this analog output on this device. */
 118         int fifo;                                                       /**< If set this device has a FIFO. */
 119
 120         int bosch_fw;                                           /**< If set the bosch firmware is in PROM. */
 121
 122         /* Registers */
 123         uint32_t ctrl_reg;
 124         uint32_t status_reg;
 125         uint32_t fifo_reg;
 126         uint32_t single_reg;
 127         uint32_t timer_reg;
 128         uint32_t irq_status_reg;
 129         uint32_t preload_reg;
 130         uint32_t reg_base;
 131 } me4600_ao_subdevice_t;
 132
 133         /**
 134         * @brief The constructor to generate a ME-4000 analog output subdevice instance for BOSCH project.
 135         *
 136         * @param reg_base The register base address of the device as returned by the PCI BIOS.
 137         * @param ctrl_reg_lock Pointer to spin lock protecting the control register from concurrent access.
 138         * @param preload_flags Pointer to spin lock protecting the hold&trigger register from concurrent access.
 139         * @param ao_idx Subdevice number.
 140         * @param fifo Flag set if subdevice has hardware FIFO.
 141         * @param irq IRQ number.
 142         *
 143         * @return Pointer to new instance on success.\n
 144         * NULL on error.
 145         */
 146 me4600_ao_subdevice_t *me4600_ao_constructor(uint32_t reg_base,
 147                                              spinlock_t * preload_reg_lock,
 148                                              uint32_t * preload_flags,
 149                                              int ao_idx, int fifo, int irq);
 150
 151 #  else //~BOSCH
 152
 153 //ME4600_AO_FLAGS_BROKEN_PIPE is OBSOLETE => Now problems are reported in status.
 154
 155 typedef enum ME4600_AO_STATUS {
 156         ao_status_none = 0,
 157         ao_status_single_configured,
 158         ao_status_single_run_wait,
 159         ao_status_single_run,
 160         ao_status_single_end_wait,
 161         ao_status_single_end,
 162         ao_status_stream_configured,
 163         ao_status_stream_run_wait,
 164         ao_status_stream_run,
 165         ao_status_stream_end_wait,
 166         ao_status_stream_end,
 167         ao_status_stream_fifo_error,
 168         ao_status_stream_buffer_error,
 169         ao_status_stream_error,
 170         ao_status_last
 171 } ME4600_AO_STATUS;
 172
 173 typedef struct me4600_ao_timeout {
 174         unsigned long start_time;
 175         unsigned long delay;
 176 } me4600_ao_timeout_t;
 177
 178         /**
 179         * @brief The ME-4600 analog output subdevice class.
 180         */
 181 typedef struct me4600_ao_subdevice {
 182         /* Inheritance */
 183         me_subdevice_t base;                                            /**< The subdevice base class. */
 184         unsigned int ao_idx;                                            /**< The index of this analog output on this device. */
 185
 186         /* Attributes */
 187         spinlock_t subdevice_lock;                                      /**< Spin lock to protect the subdevice from concurrent access. */
 188         spinlock_t *preload_reg_lock;                           /**< Spin lock to protect preload_reg from concurrent access. */
 189
 190         uint32_t *preload_flags;
 191
 192         /* Hardware feautres */
 193         unsigned int irq;                                                       /**< The interrupt request number assigned by the PCI BIOS. */
 194         int fifo;                                                                       /**< If set this device has a FIFO. */
 195         int bitpattern;                                                         /**< If set this device use bitpattern. */
 196
 197         int single_value;                                                       /**< Mirror of the output value in single mode. */
 198         int single_value_in_fifo;                                       /**< Mirror of the value written in single mode. */
 199         uint32_t ctrl_trg;                                                      /**< Mirror of the trigger settings. */
 200
 201         volatile int mode;                                                      /**< Flags used for storing SW wraparound setup*/
 202         int stop_mode;                                                          /**< The user defined stop condition flag. */
 203         unsigned int start_mode;
 204         unsigned int stop_count;                                        /**< The user defined dates presentation end count. */
 205         unsigned int stop_data_count;                           /**< The stop presentation count. */
 206         unsigned int data_count;                                        /**< The real presentation count. */
 207         unsigned int preloaded_count;                           /**< The next data addres in buffer. <= for wraparound mode. */
 208         int hardware_stop_delay;                                        /**< The time that stop can take. This is only to not show hardware bug to user. */
 209
 210         volatile enum ME4600_AO_STATUS status;          /**< The current stream status flag. */
 211         me4600_ao_timeout_t timeout;                            /**< The timeout for start in blocking and non-blocking mode. */
 212
 213                                                                                 /* Registers *//**< All registers are 32 bits long. */
 214         unsigned long ctrl_reg;
 215         unsigned long status_reg;
 216         unsigned long fifo_reg;
 217         unsigned long single_reg;
 218         unsigned long timer_reg;
 219         unsigned long irq_status_reg;
 220         unsigned long preload_reg;
 221         unsigned long reg_base;
 222
 223         /* Software buffer */
 224         me_circ_buf_t circ_buf;                                         /**< Circular buffer holding measurment data. 32 bit long */
 225         wait_queue_head_t wait_queue;                           /**< Wait queue to put on tasks waiting for data to arrive. */
 226
 227         struct workqueue_struct *me4600_workqueue;
 228 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
 229         struct work_struct ao_control_task;
 230 #else
 231         struct delayed_work ao_control_task;
 232 #endif
 233
 234         volatile int ao_control_task_flag;                      /**< Flag controling reexecuting of control task */
 235
 236 } me4600_ao_subdevice_t;
 237
 238         /**
 239         * @brief The constructor to generate a ME-4600 analog output subdevice instance.
 240         *
 241         * @param reg_base The register base address of the device as returned by the PCI BIOS.
 242         * @param ctrl_reg_lock Pointer to spin lock protecting the control register from concurrent access.
 243         * @param preload_flags Pointer to spin lock protecting the hold&trigger register from concurrent access.
 244         * @param ao_idx Subdevice number.
 245         * @param fifo Flag set if subdevice has hardware FIFO.
 246         * @param irq IRQ number.
 247         * @param me4600_wq Queue for asynchronous task (1 queue for all subdevice on 1 board).
 248         *
 249         * @return Pointer to new instance on success.\n
 250         * NULL on error.
 251         */
 252 me4600_ao_subdevice_t *me4600_ao_constructor(uint32_t reg_base,
 253                                              spinlock_t * preload_reg_lock,
 254                                              uint32_t * preload_flags,
 255                                              int ao_idx,
 256                                              int fifo,
 257                                              int irq,
 258                                              struct workqueue_struct
 259                                              *me4600_wq);
 260
 261 #  endif //BOSCH
 262 # endif //__KERNEL__
 263 #endif // ~_ME4600_AO_H_