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Patch from Eric Norum <eric@cls.usask.ca> to add optional support for

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fast mutexes that bypass the API level to directly interface with the
SuperCore.
This commit is contained in:
Joel Sherrill
2000-08-02 21:12:36 +00:00
parent 3393f6dda3
commit 0e08ff0033
3 changed files with 141 additions and 9 deletions
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50
c/src/exec/libnetworking/rtems/rtems_glue.c
View File

@@ -2,6 +2,12 @@
* $Id$
*/
#define RTEMS_FAST_MUTEX
#ifdef RTEMS_FAST_MUTEX
#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__ 1
#endif
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
@@ -45,6 +51,9 @@ unsigned long sb_efficiency = 8;
* Network task synchronization
*/
static rtems_id networkSemaphore;
#ifdef RTEMS_FAST_MUTEX
Semaphore_Control *the_networkSemaphore;
#endif
static rtems_id networkDaemonTid;
static rtems_unsigned32 networkDaemonPriority;
static void networkDaemon (void *task_argument);
@@ -221,9 +230,9 @@ rtems_bsdnet_initialize (void)
*/
sc = rtems_semaphore_create (rtems_build_name('B', 'S', 'D', 'n'),
0,
RTEMS_FIFO |
RTEMS_PRIORITY |
RTEMS_BINARY_SEMAPHORE |
RTEMS_NO_INHERIT_PRIORITY |
RTEMS_INHERIT_PRIORITY |
RTEMS_NO_PRIORITY_CEILING |
RTEMS_LOCAL,
0,
@@ -232,6 +241,13 @@ rtems_bsdnet_initialize (void)
printf ("Can't create network seamphore: `%s'\n", rtems_status_text (sc));
return -1;
}
#ifdef RTEMS_FAST_MUTEX
{
Objects_Locations location;
the_networkSemaphore = _Semaphore_Get( networkSemaphore, &location );
_Thread_Enable_dispatch();
}
#endif
/*
* Compute clock tick conversion factors
@@ -270,11 +286,25 @@ rtems_bsdnet_initialize (void)
void
rtems_bsdnet_semaphore_obtain (void)
{
#ifdef RTEMS_FAST_MUTEX
ISR_Level level;
_ISR_Disable (level);
_CORE_mutex_Seize (
&the_networkSemaphore->Core_control.mutex,
networkSemaphore,
1, /* wait */
0, /* forever */
level
);
if (_Thread_Executing->Wait.return_code)
rtems_panic ("Can't obtain network semaphore\n");
#else
rtems_status_code sc;
sc = rtems_semaphore_obtain (networkSemaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
if (sc != RTEMS_SUCCESSFUL)
rtems_panic ("Can't obtain network semaphore: `%s'\n", rtems_status_text (sc));
#endif
}
/*
@@ -283,12 +313,26 @@ rtems_bsdnet_semaphore_obtain (void)
void
rtems_bsdnet_semaphore_release (void)
{
#ifdef RTEMS_FAST_MUTEX
int i;
_Thread_Disable_dispatch();
i = _CORE_mutex_Surrender (
&the_networkSemaphore->Core_control.mutex,
networkSemaphore,
NULL
);
_Thread_Enable_dispatch();
if (i)
rtems_panic ("Can't release network semaphore\n");
#else
rtems_status_code sc;
sc = rtems_semaphore_release (networkSemaphore);
if (sc != RTEMS_SUCCESSFUL)
rtems_panic ("Can't release network semaphore: `%s'\n", rtems_status_text (sc));
}
#endif
}
/*
* Wait for something to happen to a socket buffer

50
c/src/libnetworking/rtems/rtems_glue.c
View File

@@ -2,6 +2,12 @@
* $Id$
*/
#define RTEMS_FAST_MUTEX
#ifdef RTEMS_FAST_MUTEX
#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__ 1
#endif
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
@@ -45,6 +51,9 @@ unsigned long sb_efficiency = 8;
* Network task synchronization
*/
static rtems_id networkSemaphore;
#ifdef RTEMS_FAST_MUTEX
Semaphore_Control *the_networkSemaphore;
#endif
static rtems_id networkDaemonTid;
static rtems_unsigned32 networkDaemonPriority;
static void networkDaemon (void *task_argument);
@@ -221,9 +230,9 @@ rtems_bsdnet_initialize (void)
*/
sc = rtems_semaphore_create (rtems_build_name('B', 'S', 'D', 'n'),
0,
RTEMS_FIFO |
RTEMS_PRIORITY |
RTEMS_BINARY_SEMAPHORE |
RTEMS_NO_INHERIT_PRIORITY |
RTEMS_INHERIT_PRIORITY |
RTEMS_NO_PRIORITY_CEILING |
RTEMS_LOCAL,
0,
@@ -232,6 +241,13 @@ rtems_bsdnet_initialize (void)
printf ("Can't create network seamphore: `%s'\n", rtems_status_text (sc));
return -1;
}
#ifdef RTEMS_FAST_MUTEX
{
Objects_Locations location;
the_networkSemaphore = _Semaphore_Get( networkSemaphore, &location );
_Thread_Enable_dispatch();
}
#endif
/*
* Compute clock tick conversion factors
@@ -270,11 +286,25 @@ rtems_bsdnet_initialize (void)
void
rtems_bsdnet_semaphore_obtain (void)
{
#ifdef RTEMS_FAST_MUTEX
ISR_Level level;
_ISR_Disable (level);
_CORE_mutex_Seize (
&the_networkSemaphore->Core_control.mutex,
networkSemaphore,
1, /* wait */
0, /* forever */
level
);
if (_Thread_Executing->Wait.return_code)
rtems_panic ("Can't obtain network semaphore\n");
#else
rtems_status_code sc;
sc = rtems_semaphore_obtain (networkSemaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
if (sc != RTEMS_SUCCESSFUL)
rtems_panic ("Can't obtain network semaphore: `%s'\n", rtems_status_text (sc));
#endif
}
/*
@@ -283,12 +313,26 @@ rtems_bsdnet_semaphore_obtain (void)
void
rtems_bsdnet_semaphore_release (void)
{
#ifdef RTEMS_FAST_MUTEX
int i;
_Thread_Disable_dispatch();
i = _CORE_mutex_Surrender (
&the_networkSemaphore->Core_control.mutex,
networkSemaphore,
NULL
);
_Thread_Enable_dispatch();
if (i)
rtems_panic ("Can't release network semaphore\n");
#else
rtems_status_code sc;
sc = rtems_semaphore_release (networkSemaphore);
if (sc != RTEMS_SUCCESSFUL)
rtems_panic ("Can't release network semaphore: `%s'\n", rtems_status_text (sc));
}
#endif
}
/*
* Wait for something to happen to a socket buffer

50
cpukit/libnetworking/rtems/rtems_glue.c
View File

@@ -2,6 +2,12 @@
* $Id$
*/
#define RTEMS_FAST_MUTEX
#ifdef RTEMS_FAST_MUTEX
#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__ 1
#endif
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
@@ -45,6 +51,9 @@ unsigned long sb_efficiency = 8;
* Network task synchronization
*/
static rtems_id networkSemaphore;
#ifdef RTEMS_FAST_MUTEX
Semaphore_Control *the_networkSemaphore;
#endif
static rtems_id networkDaemonTid;
static rtems_unsigned32 networkDaemonPriority;
static void networkDaemon (void *task_argument);
@@ -221,9 +230,9 @@ rtems_bsdnet_initialize (void)
*/
sc = rtems_semaphore_create (rtems_build_name('B', 'S', 'D', 'n'),
0,
RTEMS_FIFO |
RTEMS_PRIORITY |
RTEMS_BINARY_SEMAPHORE |
RTEMS_NO_INHERIT_PRIORITY |
RTEMS_INHERIT_PRIORITY |
RTEMS_NO_PRIORITY_CEILING |
RTEMS_LOCAL,
0,
@@ -232,6 +241,13 @@ rtems_bsdnet_initialize (void)
printf ("Can't create network seamphore: `%s'\n", rtems_status_text (sc));
return -1;
}
#ifdef RTEMS_FAST_MUTEX
{
Objects_Locations location;
the_networkSemaphore = _Semaphore_Get( networkSemaphore, &location );
_Thread_Enable_dispatch();
}
#endif
/*
* Compute clock tick conversion factors
@@ -270,11 +286,25 @@ rtems_bsdnet_initialize (void)
void
rtems_bsdnet_semaphore_obtain (void)
{
#ifdef RTEMS_FAST_MUTEX
ISR_Level level;
_ISR_Disable (level);
_CORE_mutex_Seize (
&the_networkSemaphore->Core_control.mutex,
networkSemaphore,
1, /* wait */
0, /* forever */
level
);
if (_Thread_Executing->Wait.return_code)
rtems_panic ("Can't obtain network semaphore\n");
#else
rtems_status_code sc;
sc = rtems_semaphore_obtain (networkSemaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
if (sc != RTEMS_SUCCESSFUL)
rtems_panic ("Can't obtain network semaphore: `%s'\n", rtems_status_text (sc));
#endif
}
/*
@@ -283,12 +313,26 @@ rtems_bsdnet_semaphore_obtain (void)
void
rtems_bsdnet_semaphore_release (void)
{
#ifdef RTEMS_FAST_MUTEX
int i;
_Thread_Disable_dispatch();
i = _CORE_mutex_Surrender (
&the_networkSemaphore->Core_control.mutex,
networkSemaphore,
NULL
);
_Thread_Enable_dispatch();
if (i)
rtems_panic ("Can't release network semaphore\n");
#else
rtems_status_code sc;
sc = rtems_semaphore_release (networkSemaphore);
if (sc != RTEMS_SUCCESSFUL)
rtems_panic ("Can't release network semaphore: `%s'\n", rtems_status_text (sc));
}
#endif
}
/*
* Wait for something to happen to a socket buffer