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/* Copyright (c) 2008-2010, Advanced Micro Devices. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
#include "gsl.h"
#include "gsl_hal.h"
//////////////////////////////////////////////////////////////////////////////
// defines
//////////////////////////////////////////////////////////////////////////////
#define GSL_PROCESSID_NONE 0x00000000
#define GSL_DRVFLAGS_EXTERNAL 0x10000000
#define GSL_DRVFLAGS_INTERNAL 0x20000000
//////////////////////////////////////////////////////////////////////////////
// globals
//////////////////////////////////////////////////////////////////////////////
#ifndef KGSL_USER_MODE
static gsl_flags_t gsl_driver_initialized = 0;
gsl_driver_t gsl_driver;
#else
extern gsl_flags_t gsl_driver_initialized;
extern gsl_driver_t gsl_driver;
#endif
//////////////////////////////////////////////////////////////////////////////
// functions
//////////////////////////////////////////////////////////////////////////////
int
kgsl_driver_init0(gsl_flags_t flags, gsl_flags_t flags_debug)
{
int status = GSL_SUCCESS;
if (!(gsl_driver_initialized & GSL_FLAGS_INITIALIZED0))
{
#ifdef GSL_LOG
// Uncomment these to enable logging.
//kgsl_log_init();
//kgsl_log_open_stdout( KGSL_LOG_GROUP_ALL | KGSL_LOG_LEVEL_ALL | KGSL_LOG_TIMESTAMP
// | KGSL_LOG_THREAD_ID | KGSL_LOG_PROCESS_ID );
//kgsl_log_open_file( "c:\\kgsl_log.txt", KGSL_LOG_GROUP_ALL | KGSL_LOG_LEVEL_ALL | KGSL_LOG_TIMESTAMP
// | KGSL_LOG_THREAD_ID | KGSL_LOG_PROCESS_ID );
#endif
kos_memset(&gsl_driver, 0, sizeof(gsl_driver_t));
GSL_API_MUTEX_CREATE();
}
#ifdef _DEBUG
// set debug flags on every entry, and prior to hal initialization
gsl_driver.flags_debug |= flags_debug;
#else
(void) flags_debug; // unref formal parameter
#endif // _DEBUG
KGSL_DEBUG(GSL_DBGFLAGS_DUMPX,
{
KGSL_DEBUG_DUMPX_OPEN("dumpx.tb", 0);
KGSL_DEBUG_DUMPX( BB_DUMP_ENABLE, 0, 0, 0, " ");
});
KGSL_DEBUG_TBDUMP_OPEN("tbdump.txt");
if (!(gsl_driver_initialized & GSL_FLAGS_INITIALIZED0))
{
GSL_API_MUTEX_LOCK();
// init hal
status = kgsl_hal_init();
if (status == GSL_SUCCESS)
{
gsl_driver_initialized |= flags;
gsl_driver_initialized |= GSL_FLAGS_INITIALIZED0;
}
GSL_API_MUTEX_UNLOCK();
}
return (status);
}
//----------------------------------------------------------------------------
int
kgsl_driver_close0(gsl_flags_t flags)
{
int status = GSL_SUCCESS;
if ((gsl_driver_initialized & GSL_FLAGS_INITIALIZED0) && (gsl_driver_initialized & flags))
{
GSL_API_MUTEX_LOCK();
// close hall
status = kgsl_hal_close();
GSL_API_MUTEX_UNLOCK();
GSL_API_MUTEX_FREE();
#ifdef GSL_LOG
kgsl_log_close();
#endif
gsl_driver_initialized &= ~flags;
gsl_driver_initialized &= ~GSL_FLAGS_INITIALIZED0;
KGSL_DEBUG(GSL_DBGFLAGS_DUMPX,
{
KGSL_DEBUG_DUMPX_CLOSE();
});
KGSL_DEBUG_TBDUMP_CLOSE();
}
return (status);
}
//----------------------------------------------------------------------------
KGSL_API int
kgsl_driver_init()
{
// only an external (platform specific device driver) component should call this
return(kgsl_driver_init0(GSL_DRVFLAGS_EXTERNAL, 0));
}
//----------------------------------------------------------------------------
KGSL_API int
kgsl_driver_close()
{
// only an external (platform specific device driver) component should call this
return(kgsl_driver_close0(GSL_DRVFLAGS_EXTERNAL));
}
//----------------------------------------------------------------------------
KGSL_API int
kgsl_driver_entry(gsl_flags_t flags)
{
int status = GSL_FAILURE;
int index, i;
unsigned int pid;
if (kgsl_driver_init0(GSL_DRVFLAGS_INTERNAL, flags) != GSL_SUCCESS)
{
return (GSL_FAILURE);
}
kgsl_log_write( KGSL_LOG_GROUP_DRIVER | KGSL_LOG_LEVEL_TRACE, "--> int kgsl_driver_entry( gsl_flags_t flags=%d )\n", flags );
GSL_API_MUTEX_LOCK();
pid = GSL_CALLER_PROCESSID_GET();
// if caller process has not already opened access
status = kgsl_driver_getcallerprocessindex(pid, &index);
if (status != GSL_SUCCESS)
{
// then, add caller pid to process table
status = kgsl_driver_getcallerprocessindex(GSL_PROCESSID_NONE, &index);
if (status == GSL_SUCCESS)
{
gsl_driver.callerprocess[index] = pid;
gsl_driver.refcnt++;
}
}
if (status == GSL_SUCCESS)
{
if (!(gsl_driver_initialized & GSL_FLAGS_INITIALIZED))
{
// init memory apertures
status = kgsl_sharedmem_init(&gsl_driver.shmem);
if (status == GSL_SUCCESS)
{
// init devices
for (i = 0; i < GSL_DEVICE_MAX; i++)
{
status = kgsl_device_init(&gsl_driver.device[i], (gsl_deviceid_t)(i + 1));
if (status != GSL_SUCCESS)
{
break;
}
}
}
if (status == GSL_SUCCESS)
{
gsl_driver_initialized |= GSL_FLAGS_INITIALIZED;
}
}
// walk through process attach callbacks
if (status == GSL_SUCCESS)
{
for (i = 0; i < GSL_DEVICE_MAX; i++)
{
status = kgsl_device_attachcallback(&gsl_driver.device[i], pid);
if (status != GSL_SUCCESS)
{
break;
}
}
}
// if something went wrong
if (status != GSL_SUCCESS)
{
// then, remove caller pid from process table
if (kgsl_driver_getcallerprocessindex(pid, &index) == GSL_SUCCESS)
{
gsl_driver.callerprocess[index] = GSL_PROCESSID_NONE;
gsl_driver.refcnt--;
}
}
}
GSL_API_MUTEX_UNLOCK();
kgsl_log_write( KGSL_LOG_GROUP_DRIVER | KGSL_LOG_LEVEL_TRACE, "<-- kgsl_driver_entry. Return value: %B\n", status );
return (status);
}
//----------------------------------------------------------------------------
int
kgsl_driver_exit0(unsigned int pid)
{
int status = GSL_SUCCESS;
int index, i;
GSL_API_MUTEX_LOCK();
if (gsl_driver_initialized & GSL_FLAGS_INITIALIZED)
{
if (kgsl_driver_getcallerprocessindex(pid, &index) == GSL_SUCCESS)
{
// walk through process detach callbacks
for (i = 0; i < GSL_DEVICE_MAX; i++)
{
// Empty the freememqueue of this device
kgsl_cmdstream_memqueue_drain(&gsl_driver.device[i]);
// Detach callback
status = kgsl_device_detachcallback(&gsl_driver.device[i], pid);
if (status != GSL_SUCCESS)
{
break;
}
}
// last running caller process
if (gsl_driver.refcnt - 1 == 0)
{
// close devices
for (i = 0; i < GSL_DEVICE_MAX; i++)
{
kgsl_device_close(&gsl_driver.device[i]);
}
// shutdown memory apertures
kgsl_sharedmem_close(&gsl_driver.shmem);
gsl_driver_initialized &= ~GSL_FLAGS_INITIALIZED;
}
// remove caller pid from process table
gsl_driver.callerprocess[index] = GSL_PROCESSID_NONE;
gsl_driver.refcnt--;
}
}
GSL_API_MUTEX_UNLOCK();
if (!(gsl_driver_initialized & GSL_FLAGS_INITIALIZED))
{
kgsl_driver_close0(GSL_DRVFLAGS_INTERNAL);
}
return (status);
}
//----------------------------------------------------------------------------
KGSL_API int
kgsl_driver_exit(void)
{
int status;
kgsl_log_write( KGSL_LOG_GROUP_DRIVER | KGSL_LOG_LEVEL_TRACE, "--> int kgsl_driver_exit()\n" );
status = kgsl_driver_exit0(GSL_CALLER_PROCESSID_GET());
kgsl_log_write( KGSL_LOG_GROUP_DRIVER | KGSL_LOG_LEVEL_TRACE, "<-- kgsl_driver_exit(). Return value: %B\n", status );
return (status);
}
//----------------------------------------------------------------------------
KGSL_API int
kgsl_driver_destroy(unsigned int pid)
{
return (kgsl_driver_exit0(pid));
}
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