vme_api.c

universeII驱动

/*
===============================================================================
                            COPYRIGHT NOTICE

    Copyright (C) 2002 VMIC
    International Copyright Secured.  All Rights Reserved.

-------------------------------------------------------------------------------

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

   o Redistributions of source code must retain the above copyright notice, this
     list of conditions and the following disclaimer.
   o Redistributions in binary form must reproduce the above copyright notice,
     this list of conditions and the following disclaimer in the documentation
     and/or other materials provided with the distribution.
   o Neither the name of VMIC nor the names of its contributors may be used to
     endorse or promote products derived from this software without specific
     prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

===============================================================================
*/


 /* Notes on the implementation of the legacy VMEbus interface:
    We create and map resources here, but since the Linux 2.x driver did not
    dynamically allocate resources, the API provided no way to free the
    resources.  The resource will continue to exist until the application exits.
    The driver knows to free all resources granted to a process when vmeTerm()
    is called, or when the process terminates.
  */

#include <fcntl.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <linux/stddef.h>
#include <sys/mman.h>
#include <vmic/vme_api.h>


#define UNIVERSE_DEVICE  "/dev/bus/vme/ctl"


static vme_interrupt_handle_t interrupt[UNIV_IRQS] = { 0 };
static vme_bus_handle_t bus_handle;


/*============================================================================
 * Initialize the VMEbus driver interface
 */
int                             /* Returns 0 on success or -1 on failure */
vmeInit ()
{
  return (vme_init (&bus_handle));
}


/*============================================================================
 * Cleanup the VMEbus driver interface
 */
int                             /* Returns a positive int on success or -1 
                                   on failure */
vmeTerm ()
{
  return (vme_term (bus_handle));
}


/*****************************************************************************
 * Set the number of retries before the PCI master interface signals an error
 */
int                             /* 0 on success, -1 on failure */
vmeSetMaxRetry (int maxrtry     /* Number of retry attempts. This value must
                                   be a multiple of 64 between the
                                   values of 0 and 960. The value 0
                                   means retry forever */
  )
{
  return (vme_set_max_retry (bus_handle, maxrtry));
}


/*****************************************************************************
 * Get the number of retries before the PCI master interface signals an error
 */
int                             /* 0 on success, -1 on failure */
vmeGetMaxRetry (int *maxrtry /* Number of retry attempts */ )
{
  return (vme_get_max_retry (bus_handle, maxrtry));
}


/*****************************************************************************
 * Set the transfer count at which the PCI slave channel posted write FIFO
 * gives up the VMEbus master interface
 */
int                             /* 0 on success, -1 on failure */
vmeSetPostedWriteCount (vme_posted_write_count_t pwon /* Transfer count */ )
{
  return (vme_set_posted_write_count (bus_handle, pwon));
}


/*****************************************************************************
 * Set the transfer count at which the PCI slave channel posted write FIFO
 * gives up the VMEbus master interface
 */
int                             /* 0 on success, -1 on failure */
vmeGetPostedWriteCount (vme_posted_write_count_t * pwon /* Transfer count */ )
{
  return (vme_get_posted_write_count (bus_handle, (int *) pwon));
}


/*****************************************************************************
 * Set the VMEbus request level
 */
int                             /* 0 on success, -1 on failure */
vmeSetBusRequestLevel (vme_bus_request_level_t br_level /* VMEbus request
                                                           level */
  )
{
  return (vme_set_bus_request_level (bus_handle, br_level));
}


/*****************************************************************************
 * Get the VMEbus request level
 */
int                             /* 0 on success, -1 on failure */
vmeGetBusRequestLevel (vme_bus_request_level_t * br_level       /* VMEbus
                                                                   request
                                                                   level */
  )
{
  return (vme_get_bus_request_level (bus_handle, (int *) br_level));
}


/*****************************************************************************
 * Set the VMEbus request mode
 */
int                             /* 0 on success, -1 on failure */
vmeSetBusRequestMode (vme_bus_request_mode_t br_mode    /* VMEbus request
                                                           mode */
  )
{
  return (vme_set_bus_request_mode (bus_handle, br_mode));
}


/*****************************************************************************
 * Get the VMEbus request mode
 */
int                             /* 0 on success, -1 on failure */
vmeGetBusRequestMode (vme_bus_request_mode_t * br_mode  /* VMEbus request
                                                           mode */
  )
{
  return (vme_get_bus_request_mode (bus_handle, (int *) br_mode));
}


/*****************************************************************************
 * Set the VMEbus release mode
 */
int                             /* 0 on success, -1 on failure */
vmeSetBusReleaseMode (vme_bus_release_mode_t br_mode    /* VMEbus release
                                                           mode */
  )
{
  return (vme_set_bus_release_mode (bus_handle, br_mode));
}


/*****************************************************************************
 * Get the VMEbus release mode
 */
int                             /* 0 on success, -1 on failure */
vmeGetBusReleaseMode (vme_bus_release_mode_t * br_mode  /* VMEbus release 
                                                           mode */
  )
{
  return (vme_get_bus_release_mode (bus_handle, (int *) br_mode));
}


/*****************************************************************************
 * Set the state of VMEbus ownership
 */
int                             /* 0 on success, -1 on failure */
vmeSetVown (vme_vown_t vown /* VMEbus ownership state */ )
{
  if (vown)
    return (vme_acquire_bus_ownership (bus_handle));
  else
    return (vme_release_bus_ownership (bus_handle));
}


/*****************************************************************************
 * Get the state of VMEbus ownership
 */
int                             /* 0 on success, -1 on failure */
vmeGetVown (vme_vown_t * vown /* VMEbus ownership state */ )
{
  return (vme_get_bus_ownership (bus_handle, (int *) vown));
}


/*****************************************************************************
 * Set the VMEbus timeout value
 */
int                             /* 0 on success, -1 on failure */
vmeSetBusTimeout (vme_bus_timeout_t to /* VMEbus timeout value */ )
{
  return (vme_set_bus_timeout (bus_handle, to));
}


/*****************************************************************************
 * Get the VMEbus timeout value
 */
int                             /* 0 on success, -1 on failure */
vmeGetBusTimeout (vme_bus_timeout_t * to /* VMEbus timeout value */ )
{
  return (vme_get_bus_timeout (bus_handle, (int *) to));
}


/*****************************************************************************
 * Set the VMEbus arbitration mode
 */
int                             /* 0 on success, -1 on failure */
vmeSetBusArbitrationMode (vme_bus_arbitration_mode_t arb_mode   /* VMEbus
                                                                   arbitration
                                                                   mode */
  )
{
  return (vme_set_arbitration_mode (bus_handle, arb_mode));
}


/*****************************************************************************
 * Get the VMEbus arbitration mode
 */
int                             /* 0 on success, -1 on failure */
vmeGetBusArbitrationMode (vme_bus_arbitration_mode_t * arb_mode /* VMEbus
                                                                   arbitration
                                                                   mode */
  )
{
  return (vme_get_arbitration_mode (bus_handle, (int *) arb_mode));
}


/*****************************************************************************
 * Set the VMEbus arbitration timeout value
 */
int                             /* 0 on success, -1 on failure */
vmeSetBusArbitrationTimeout (vme_bus_arbitration_timeout_t to   /* VMEbus
                                                                   arbitration
                                                                   timeout */
  )
{
  return (vme_set_arbitration_timeout (bus_handle, to));
}


/*****************************************************************************
 * Get the VMEbus arbitration timeout value
 */
int                             /* 0 on success, -1 on failure */
vmeGetBusArbitrationTimeout (vme_bus_arbitration_timeout_t * to /* VMEbus
                                                                   arbitration
                                                                   timeout */
  )
{
  return (vme_get_arbitration_timeout (bus_handle, (int *) to));
}


/*****************************************************************************
 * Set the hardware master window endian control register
 */
int                             /* 0 on success, -1 on failure */
vmeSetMEC (vme_endian_conversion_t endian /* hardware endian control */ )
{