kernel/2.6.29.6-aldebaran-rt/drivers/staging/meilhaus/me1400_ext_irq.h

   1 /**
   2  * @file me1400_ext_irq.h
   3  *
   4  * @brief ME-1400 external interrupt implementation.
   5  * @note Copyright (C) 2006 Meilhaus Electronic GmbH (support@meilhaus.de)
   6  * @author Guenter Gebhardt
   7  */
   8
   9 #ifndef _ME1400_EXT_IRQ_H_
  10 #define _ME1400_EXT_IRQ_H_
  11
  12 #include <linux/sched.h>
  13
  14 #include "mesubdevice.h"
  15 #include "meslock.h"
  16
  17 #ifdef __KERNEL__
  18
  19 /**
  20  * @brief The ME-1400 external interrupt subdevice class.
  21  */
  22 typedef struct me1400_ext_irq_subdevice {
  23         /* Inheritance */
  24         me_subdevice_t base;                    /**< The subdevice base class. */
  25
  26         /* Attributes */
  27         spinlock_t subdevice_lock;              /**< Spin lock to protect the subdevice from concurrent access. */
  28         spinlock_t *clk_src_reg_lock;   /**< Lock protecting the clock control register. */
  29
  30         wait_queue_head_t wait_queue;   /**< Queue to put on threads waiting for an interrupt. */
  31
  32         uint32_t device_id;                             /**< The device id of the device holding the subdevice. */
  33         int irq;                                                /**< The irq number assigned by PCI BIOS. */
  34         int rised;                                              /**< If true an interrupt has occured. */
  35         unsigned int n;                                 /**< The number of interrupt since the driver was loaded. */
  36
  37         unsigned long plx_intcs_reg;    /**< The PLX interrupt control and status register. */
  38         unsigned long ctrl_reg;                 /**< The control register. */
  39 #ifdef MEDEBUG_DEBUG_REG
  40         unsigned long reg_base;
  41 #endif
  42 } me1400_ext_irq_subdevice_t;
  43
  44 /**
  45  * @brief The constructor to generate a ME-1400 external interrupt instance.
  46  *
  47  * @param plx_reg_base The register base address of the PLX chip as returned by the PCI BIOS.
  48  * @param me1400_reg_base The register base address of the ME-1400 device as returned by the PCI BIOS.
  49  * @param irq The irq assigned by the PCI BIOS.
  50  *
  51  * @return Pointer to new instance on success.\n
  52  * NULL on error.
  53  */
  54 me1400_ext_irq_subdevice_t *me1400_ext_irq_constructor(uint32_t device_id,
  55                                                        uint32_t plx_reg_base,
  56                                                        uint32_t me1400_reg_base,
  57                                                        spinlock_t *
  58                                                        clk_src_reg_lock,
  59                                                        int irq);
  60
  61 #endif
  62 #endif