original files of m241
This commit is contained in:
neelimap
@@ -0,0 +1,210 @@
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/* nullVme.c - null VMEbus library */
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/* Copyright 1984-2004 Wind River Systems, Inc. */
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#include "copyright_wrs.h"
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/*
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modification history
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--------------------
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01j,17sep04,mdo Documentation fixes for apigen
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01i,17oct03,sru fix prototype mismatch
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01h,18jun01,mil Cleaned up compiler warnings.
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01g,03jan97,wlf doc: more cleanup.
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01f,04jun96,wlf doc: cleanup.
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01e,30may96,wlf doc: cleanup.
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01d,21may96,dat documentation
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01c,15sep93,hdn added a title of sysMailboxConnect () for documentation.
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01b,18aug93,vin fixed title to sysMailboxConnect which causes error
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when generating man pages.
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01a,20aug92,ccc created by copying routines from mb930 sysLib.c.
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*/
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/*
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DESCRIPTION
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This library contains null routines for boards which do not include any
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common bus routines.
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The functions addressed here include:
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Bus interrupt functions:
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- enable/disable VMEbus interrupt levels
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- generate bus interrupts
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Mailbox/locations monitor functions:
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- enable mailbox/location monitor interrupts
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*/
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/******************************************************************************
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*
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* sysLocalToBusAdrs - convert a local address to a bus address
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*
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* This routine gets the VMEbus address that accesses a specified local
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* memory address.
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*
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* NOTE: This routine has no effect, since there is no VMEbus.
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*
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* RETURNS: ERROR, always.
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*
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* ERRNO
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*
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* SEE ALSO: sysBusToLocalAdrs()
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*/
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STATUS sysLocalToBusAdrs
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(
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int adrsSpace, /* bus address space in which busAdrs resides, */
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/* use address modifier codes defined in vme.h, */
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/* such as VME_AM_STD_SUP_DATA */
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char *localAdrs, /* local address to convert */
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char **pBusAdrs /* where to return bus address */
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)
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{
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return (ERROR);
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}
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/******************************************************************************
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*
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* sysBusToLocalAdrs - convert a bus address to a local address
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*
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* This routine gets the local address that accesses a specified VMEbus
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* address.
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*
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* NOTE: This routine has no effect, since there is no VMEbus.
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*
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* RETURNS: ERROR, always.
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*
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* ERRNO
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*
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* SEE ALSO: sysLocalToBusAdrs()
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*/
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STATUS sysBusToLocalAdrs
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(
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int adrsSpace, /* bus address space in which busAdrs resides, */
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/* use address modifier codes defined in vme.h, */
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/* such as VME_AM_STD_SUP_DATA */
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char *busAdrs, /* bus address to convert */
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char **pLocalAdrs /* where to return local address */
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)
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{
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return (ERROR);
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}
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/******************************************************************************
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*
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* sysBusIntAck - acknowledge a bus interrupt
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*
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* This routine acknowledges a specified VMEbus interrupt level.
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*
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* NOTE: This routine has no effect, since there is no VMEbus.
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*
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* RETURNS: NULL.
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*
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* ERRNO
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*/
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int sysBusIntAck
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(
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int intLevel /* interrupt level to acknowledge */
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)
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{
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return (0);
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}
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/******************************************************************************
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*
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* sysBusIntGen - generate a bus interrupt
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*
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* This routine generates a VMEbus interrupt for a specified level with a
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* specified vector.
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*
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* NOTE: This routine has no effect, since there is no VMEbus.
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*
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* RETURNS: ERROR, always.
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*
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* ERRNO
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*/
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STATUS sysBusIntGen
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(
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int level, /* bus interrupt level to generate */
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int vector /* interrupt vector to return (0-255) */
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)
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{
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return (ERROR);
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}
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/******************************************************************************
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*
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* sysMailboxConnect - connect a routine to the mailbox interrupt
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*
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* This routine specifies the interrupt service routine to be called at each
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* mailbox interrupt.
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*
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* NOTE: This routine has no effect, since the hardware does not support mailbox
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* interrupts.
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*
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* RETURNS: ERROR, always.
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*
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* ERRNO
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*
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* SEE ALSO: sysMailboxEnable()
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*/
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STATUS sysMailboxConnect
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(
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FUNCPTR routine, /* routine called at each mailbox interrupt */
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int arg /* argument with which to call routine */
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)
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{
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return (ERROR);
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}
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/******************************************************************************
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*
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* sysMailboxEnable - enable the mailbox interrupt
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*
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* This routine enables the mailbox interrupt.
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*
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* NOTE: This routine has no effect, since the hardware does not support mailbox
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* interrupts.
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*
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* RETURNS: ERROR, always.
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*
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* ERRNO
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*
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* SEE ALSO: sysMailboxConnect()
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*/
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STATUS sysMailboxEnable
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(
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char *mailboxAdrs /* mailbox address */
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)
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{
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return (ERROR);
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}
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/********************************************************************************
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* sysBusTas - test and set a location across the bus
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*
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* This routine performs a test-and-set (TAS) instruction across the backplane.
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*
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* NOTE: This routine is equivalent to vxTas(), since there is no VMEbus.
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*
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* RETURNS: TRUE if the value had not been set but is now,
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* or FALSE if the value was set already.
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*
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* ERRNO
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*
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* SEE ALSO: vxTas()
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*/
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BOOL sysBusTas
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(
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char *addr /* address to be tested and set */
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||||
)
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{
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return(vxTas(addr)); /* RMW cycle */
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||||
}
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||||
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||||
@@ -0,0 +1,471 @@
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||||
/* templateVme.c - template VMEbus library */
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||||
/* Copyright 1984-1997 Wind River Systems, Inc. */
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#include "copyright_wrs.h"
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|
||||
/*
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||||
modification history
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||||
--------------------
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||||
TODO - Remove the template modification history and begin a new history
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||||
starting with version 01a and growing the history upward with
|
||||
each revision.
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||||
|
||||
01b,02apr97,dat chg'd sysBusToLocalAdrs, and sysLocalToBusAdrs
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||||
01a,10mar97,dat written, from nullVme.c, ver 01g
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||||
*/
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||||
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/*
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||||
TODO - This is an example driver. The documentation and code must be
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||||
replaced with appropriate information.
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DESCRIPTION
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||||
Describe the complete device, including features not controlled by this
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||||
driver.
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Describe the device's VME capabilities, including those not supported or
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used by this driver. Describe the capabilities this driver does support
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and any restrictions or limitations imposed.
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The functions usually addressed here include:
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Mapping of master and slave windows on the bus.
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|
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Test and set functions on the bus.
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||||
|
||||
Bus interrupt functions:
|
||||
- enable/disable VMEbus interrupt levels
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||||
- generate bus interrupts
|
||||
|
||||
Mailbox/locations monitor functions:
|
||||
- enable mailbox/location monitor interrupts
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||||
|
||||
In this example, the following macros control the mapping of VMEbus addresses
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to local addresses. Master accesses are accesses where the local processor
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is the bus master. The one-time setup of the control registers that implements
|
||||
master windows is normally done in sysHwInit(), in file sysLib.c.
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||||
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||||
VME_A16_MSTR_BUS Master window base (bus addr)
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VME_A16_MSTR_SIZE Master window size
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VME_A16_MSTR_LOCAL Local address of window
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||||
VME_A24_MSTR_BUS Master window base (bus addr)
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VME_A24_MSTR_SIZE Master window size
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VME_A24_MSTR_LOCAL Local address of window
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VME_A32_MSTR_BUS Master window base (bus addr)
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VME_A32_MSTR_SIZE Master window size
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VME_A32_MSTR_LOCAL Local address of window
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||||
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Slave accesses are initiated by some other CPU and the board acts as
|
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the VMEbus slave device. When a CPU exports it's memory to the bus, it
|
||||
is creating a slave window on the bus. In this example driver, the
|
||||
following macros describe the slave windows on the VMEbus. The setup
|
||||
of the slave window control registers is usually a one-time operation
|
||||
done as part of sysProcNumSet, and only for processor number 0.
|
||||
|
||||
VME_A16_SLV_LOCAL Local address mapped to window on bus.
|
||||
VME_A16_SLV_WINDOW Bus address of window
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||||
VME_A16_SLV_SIZE Slave window size
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||||
VME_A24_SLV_LOCAL Local address mapped to window on bus.
|
||||
VME_A24_SLV_WINDOW Bus address of window
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VME_A24_SLV_SIZE Slave window size
|
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|
||||
VME_A32_SLV_LOCAL Local address mapped to window on bus.
|
||||
VME_A32_SLV_WINDOW Bus address of window
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||||
VME_A32_SLV_SIZE Slave window size
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||||
|
||||
This sample driver uses the macros mentioned above to implement the functions
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||||
sysBusToLocalAdrs() and sysLocalToBusAdrs(). These are commonly declared
|
||||
directly in the sysLib.c file rather than a driver file. Declaring them
|
||||
in the driver is preferred.
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||||
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||||
The macros described above are usually defined in either config.h or
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||||
<target>.h. Those macros that are user changeable should be in config.h, while
|
||||
those that are fixed and unchangeable should be in <target>.h. The user
|
||||
should be able to set any xxxx_SIZE macro to 0 and cause the associated window,
|
||||
master or slave, to be disabled.
|
||||
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||||
INCLUDES:
|
||||
vme.h, vxLib.h, sysLib.h
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||||
*/
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||||
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||||
/* This driver contributes nothing, if INCLUDE_VME is not defined. */
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||||
#ifdef INCLUDE_VME
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||||
/* includes */
|
||||
|
||||
#include "vme.h"
|
||||
#include "vxLib.h"
|
||||
#include "sysLib.h"
|
||||
|
||||
/* locals */
|
||||
|
||||
LOCAL FUNCPTR sysMailboxRoutine = NULL;
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||||
LOCAL int sysMailboxArg = NULL;
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* sysIntDisable - disable a bus interrupt level
|
||||
*
|
||||
* This routine disables a specified VMEbus interrupt level. SysHwInit()
|
||||
* should have disabled all interrupts by default. It should not be
|
||||
* necessary to disable individual interrupts following startup.
|
||||
*
|
||||
* RETURNS: OK, or ERROR if <intLevel> is not in the range 1 - 7.
|
||||
*
|
||||
* SEE ALSO: sysIntEnable()
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||||
*/
|
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|
||||
STATUS sysIntDisable
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||||
(
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||||
int intLevel /* interrupt level to disable (1-7) */
|
||||
)
|
||||
{
|
||||
if (intLevel < 1 || intLevel > 7)
|
||||
return (ERROR);
|
||||
|
||||
/* TODO - Disable the requested interrupt level */
|
||||
|
||||
return (OK);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* sysIntEnable - enable a bus interrupt level
|
||||
*
|
||||
* This routine enables a specified VMEbus interrupt level. At startup,
|
||||
* sysHwInit() should have disabled all interrupts. Specific interrupts
|
||||
* must be enabled if interrupts are expected.
|
||||
*
|
||||
* RETURNS: OK, or ERROR if <intLevel> is not in the range 1 - 7.
|
||||
*
|
||||
* SEE ALSO: sysIntDisable()
|
||||
*/
|
||||
|
||||
STATUS sysIntEnable
|
||||
(
|
||||
int intLevel /* interrupt level to enable (1-7) */
|
||||
)
|
||||
{
|
||||
if (intLevel < 1 || intLevel > 7)
|
||||
return (ERROR);
|
||||
|
||||
/* TODO - Enable the requested interrupt level */
|
||||
|
||||
return (OK);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* sysBusIntAck - acknowledge a bus interrupt
|
||||
*
|
||||
* This routine acknowledges a specified VMEbus interrupt level.
|
||||
*
|
||||
* RETURNS: NULL.
|
||||
*/
|
||||
|
||||
int sysBusIntAck
|
||||
(
|
||||
int intLevel /* interrupt level to acknowledge */
|
||||
)
|
||||
{
|
||||
/* TODO - perform any special acknowledge cycles */
|
||||
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* sysBusIntGen - generate a bus interrupt
|
||||
*
|
||||
* This routine generates a VMEbus interrupt for a specified level with a
|
||||
* specified vector.
|
||||
*
|
||||
* WARNING:
|
||||
* The local CPU is sending an interrupt to a remote CPU. If the local
|
||||
* CPU has enabled the same VMEbus interrupt level that it is sending, then
|
||||
* the local CPU will interrupt itself and this sequence will probably fail.
|
||||
*
|
||||
* RETURNS: OK or ERROR if unable to generate requested interrupt.
|
||||
*/
|
||||
|
||||
STATUS sysBusIntGen
|
||||
(
|
||||
int level, /* bus interrupt level to generate */
|
||||
int vector /* interrupt vector to return (0-255) */
|
||||
)
|
||||
{
|
||||
/*
|
||||
* TODO - cause interrupt to occur on the VMEbus, present vector
|
||||
* during IACK cycle.
|
||||
*/
|
||||
|
||||
return (ERROR);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* sysMailboxInt - handle mailbox interrupt
|
||||
*
|
||||
* Mailbox interrupts usually must be acknowledged.
|
||||
*
|
||||
* RETURNS: N/A.
|
||||
*/
|
||||
|
||||
LOCAL void sysMailboxInt (void)
|
||||
|
||||
{
|
||||
/* TODO - Acknowledge and reset mailbox interrupt as needed */
|
||||
|
||||
if (sysMailboxRoutine != NULL)
|
||||
sysMailboxRoutine (sysMailboxArg);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* sysMailboxConnect - connect a routine to the mailbox interrupt
|
||||
*
|
||||
* This routine specifies the interrupt service routine to be called at each
|
||||
* mailbox interrupt.
|
||||
*
|
||||
* RETURNS: OK or ERROR, if mailboxes are not supported.
|
||||
*
|
||||
* SEE ALSO: sysMailboxEnable()
|
||||
*/
|
||||
|
||||
STATUS sysMailboxConnect
|
||||
(
|
||||
FUNCPTR routine, /* routine called at each mailbox interrupt */
|
||||
int arg /* argument with which to call routine */
|
||||
)
|
||||
{
|
||||
sysMailboxRoutine = NULL;
|
||||
sysMailboxArg = arg;
|
||||
sysMailboxRoutine = routine;
|
||||
|
||||
return (OK);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* sysMailboxEnable - enable the mailbox interrupt
|
||||
*
|
||||
* This routine enables the mailbox interrupt.
|
||||
*
|
||||
* RETURNS: OK or ERROR if mailboxes are not supported.
|
||||
*
|
||||
* SEE ALSO: sysMailboxConnect()
|
||||
*/
|
||||
|
||||
STATUS sysMailboxEnable
|
||||
(
|
||||
INT8 *mailboxAdrs /* mailbox address */
|
||||
)
|
||||
{
|
||||
static BOOL connected = FALSE;
|
||||
|
||||
if (!connected)
|
||||
{
|
||||
/* TODO - connect the mailbox interrupt */
|
||||
|
||||
connected = TRUE;
|
||||
}
|
||||
|
||||
/* TODO - enable mailbox interrupts */
|
||||
|
||||
return (ERROR);
|
||||
}
|
||||
|
||||
/********************************************************************************
|
||||
* sysBusTas - test and set a location across the bus
|
||||
*
|
||||
* This routine performs a test-and-set (TAS) instruction across the backplane.
|
||||
*
|
||||
* RETURNS: TRUE if the value had not been set but is now,
|
||||
* or FALSE if the value was set already.
|
||||
*
|
||||
* SEE ALSO: vxTas()
|
||||
*/
|
||||
|
||||
BOOL sysBusTas
|
||||
(
|
||||
INT8 *addr /* address to be tested and set */
|
||||
)
|
||||
{
|
||||
/* TODO - Modify as necessary to guarantee atomic read/write operation */
|
||||
|
||||
return (vxTas(addr)); /* RMW cycle */
|
||||
}
|
||||
|
||||
/********************************************************************************
|
||||
* sysBusTasClear - clear a test and set location on the bus
|
||||
*
|
||||
* This routine clears a bus test and set location. Usually this routine is
|
||||
* not even required. It is required if the sysBusTas() routine uses any
|
||||
* special semaphore techniques.
|
||||
*
|
||||
* If used, the BSP activates this routine by placing its address into the
|
||||
* global variable 'smUtilTasClearRtn'. e.g.
|
||||
*
|
||||
smUtilTasClearRtn = sysBusTasClear;
|
||||
*
|
||||
* RETURNS: N/A.
|
||||
*/
|
||||
|
||||
void sysBusTasClear
|
||||
(
|
||||
INT8 *addr /* address to be cleared */
|
||||
)
|
||||
{
|
||||
/* TODO - Modify as necessary to guarantee atomic read/write operation */
|
||||
|
||||
*addr = 0;
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* sysLocalToBusAdrs - convert a local address to a bus address
|
||||
*
|
||||
* This routine gets the VMEbus address that accesses a specified local
|
||||
* memory address.
|
||||
*
|
||||
* RETURNS: OK, or ERROR if the address space is unknown or not mapped.
|
||||
*
|
||||
* SEE ALSO: sysBusToLocalAdrs()
|
||||
*/
|
||||
|
||||
STATUS sysLocalToBusAdrs
|
||||
(
|
||||
int adrsSpace, /* bus address space in which pBusAdrs resides */
|
||||
char * pLocalAdrs, /* local address to convert */
|
||||
char ** ppBusAdrs /* where to return bus address */
|
||||
)
|
||||
{
|
||||
/* return error if local memory is not mapped to VMEbus */
|
||||
|
||||
if (sysProcNumGet () != 0)
|
||||
return ERROR;
|
||||
|
||||
switch (adrsSpace)
|
||||
{
|
||||
case VME_AM_EXT_SUP_PGM:
|
||||
case VME_AM_EXT_SUP_DATA:
|
||||
case VME_AM_EXT_USR_PGM:
|
||||
case VME_AM_EXT_USR_DATA:
|
||||
|
||||
if ((VME_A32_SLV_SIZE != 0) &&
|
||||
((ULONG)localAdrs >= VME_A32_SLV_LOCAL) &&
|
||||
((ULONG)localAdrs < (VME_A32_SLV_LOCAL + VME_A32_SLV_SIZE)))
|
||||
{
|
||||
*pBusAdrs = localAdrs + (VME_A32_SLV_BUS - VME_A32_SLV_LOCAL);
|
||||
return (OK);
|
||||
}
|
||||
return (ERROR);
|
||||
|
||||
case VME_AM_STD_SUP_PGM:
|
||||
case VME_AM_STD_SUP_DATA:
|
||||
case VME_AM_STD_USR_PGM:
|
||||
case VME_AM_STD_USR_DATA:
|
||||
|
||||
if ((VME_A24_SLV_SIZE != 0) &&
|
||||
((ULONG)localAdrs >= VME_A24_SLV_LOCAL) &&
|
||||
((ULONG)localAdrs < (VME_A24_SLV_LOCAL + VME_A24_SLV_SIZE)))
|
||||
{
|
||||
*pBusAdrs = localAdrs + (VME_A24_SLV_BUS - VME_A24_SLV_LOCAL);
|
||||
return (OK);
|
||||
}
|
||||
return (ERROR);
|
||||
|
||||
case VME_AM_SUP_SHORT_IO:
|
||||
case VME_AM_USR_SHORT_IO:
|
||||
|
||||
if ((VME_A16_SLV_SIZE != 0) &&
|
||||
((ULONG)localAdrs >= VME_A16_SLV_LOCAL) &&
|
||||
((ULONG)localAdrs < (VME_A16_SLV_LOCAL + VME_A16_SLV_SIZE)))
|
||||
{
|
||||
*pBusAdrs = localAdrs + (VME_A16_SLV_BUS - VME_A16_SLV_LOCAL);
|
||||
return (OK);
|
||||
}
|
||||
return (ERROR);
|
||||
|
||||
default:
|
||||
return (ERROR);
|
||||
}
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* sysBusToLocalAdrs - convert a bus address to a local address
|
||||
*
|
||||
* This routine gets the local address that accesses a specified VMEbus
|
||||
* memory address.
|
||||
*
|
||||
* RETURNS: OK, or ERROR if the address space is unknown or the mapping is not
|
||||
* possible.
|
||||
*
|
||||
* SEE ALSO: sysLocalToBusAdrs()
|
||||
*/
|
||||
|
||||
STATUS sysBusToLocalAdrs
|
||||
(
|
||||
int adrsSpace, /* bus address space in which pBusAdrs resides */
|
||||
char *pBusAdrs, /* bus address to convert */
|
||||
char **ppLocalAdrs /* where to return local address */
|
||||
)
|
||||
{
|
||||
switch (adrsSpace)
|
||||
{
|
||||
case VME_AM_EXT_SUP_PGM:
|
||||
case VME_AM_EXT_USR_PGM:
|
||||
case VME_AM_EXT_SUP_DATA:
|
||||
case VME_AM_EXT_USR_DATA:
|
||||
|
||||
if ((VME_A32_MSTR_SIZE == 0) ||
|
||||
((ULONG) busAdrs < VME_A32_MSTR_BUS) ||
|
||||
((ULONG) busAdrs >= (VME_A32_MSTR_BUS + VME_A32_MSTR_SIZE)))
|
||||
{
|
||||
return (ERROR);
|
||||
}
|
||||
|
||||
*pLocalAdrs = (char *)busAdrs +
|
||||
(VME_A32_MSTR_LOCAL - VME_A32_MSTR_BUS);
|
||||
return (OK);
|
||||
|
||||
case VME_AM_STD_SUP_PGM:
|
||||
case VME_AM_STD_USR_PGM:
|
||||
case VME_AM_STD_SUP_DATA:
|
||||
case VME_AM_STD_USR_DATA:
|
||||
|
||||
if ((VME_A24_MSTR_SIZE == 0) ||
|
||||
((ULONG) busAdrs < VME_A24_MSTR_BUS) ||
|
||||
((ULONG) busAdrs >= (VME_A24_MSTR_BUS + VME_A24_MSTR_SIZE)))
|
||||
{
|
||||
return (ERROR);
|
||||
}
|
||||
|
||||
*pLocalAdrs = (char *) busAdrs +
|
||||
(VME_A24_MSTR_LOCAL - VME_A24_MSTR_BUS);
|
||||
return (OK);
|
||||
|
||||
case VME_AM_SUP_SHORT_IO:
|
||||
case VME_AM_USR_SHORT_IO:
|
||||
|
||||
if ((VME_A16_MSTR_SIZE == 0) ||
|
||||
((ULONG) busAdrs < VME_A16_MSTR_BUS) ||
|
||||
((ULONG) busAdrs >= (VME_A16_MSTR_BUS + VME_A16_MSTR_SIZE)))
|
||||
{
|
||||
return (ERROR);
|
||||
}
|
||||
|
||||
*pLocalAdrs = (char *) busAdrs +
|
||||
(VME_A16_MSTR_LOCAL - VME_A16_MSTR_BUS);
|
||||
return (OK);
|
||||
|
||||
default:
|
||||
return (ERROR);
|
||||
}
|
||||
}
|
||||
|
||||
#endif /*INCLUDE_VME*/
|
||||
Reference in New Issue
Block a user