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Diffstat (limited to 'Source/DirectFB/systems/devmem/devmem.c')
-rwxr-xr-xSource/DirectFB/systems/devmem/devmem.c374
1 files changed, 374 insertions, 0 deletions
diff --git a/Source/DirectFB/systems/devmem/devmem.c b/Source/DirectFB/systems/devmem/devmem.c
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+++ b/Source/DirectFB/systems/devmem/devmem.c
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+/*
+ (c) Copyright 2001-2009 The world wide DirectFB Open Source Community (directfb.org)
+ (c) Copyright 2000-2004 Convergence (integrated media) GmbH
+
+ All rights reserved.
+
+ Written by Denis Oliver Kropp <dok@directfb.org>,
+ Andreas Hundt <andi@fischlustig.de>,
+ Sven Neumann <neo@directfb.org>,
+ Ville Syrjälä <syrjala@sci.fi> and
+ Claudio Ciccani <klan@users.sf.net>.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+
+#include <config.h>
+
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#include <directfb.h>
+
+#include <direct/mem.h>
+
+#include <fusion/arena.h>
+#include <fusion/shmalloc.h>
+
+#include <core/core.h>
+#include <core/surface_pool.h>
+
+#include <misc/conf.h>
+
+#include "devmem.h"
+#include "surfacemanager.h"
+
+
+#include <core/core_system.h>
+
+DFB_CORE_SYSTEM( devmem )
+
+/**********************************************************************************************************************/
+
+static DevMemData *m_data; /* FIXME: Fix Core System API to pass data in all functions. */
+
+/**********************************************************************************************************************/
+
+static DFBResult
+MapMemAndReg( DevMemData *data,
+ unsigned long mem_phys,
+ unsigned int mem_length,
+ unsigned long reg_phys,
+ unsigned int reg_length )
+{
+ int fd;
+
+ fd = open( DEV_MEM, O_RDWR | O_SYNC );
+ if (fd < 0) {
+ D_PERROR( "System/DevMem: Opening '%s' failed!\n", DEV_MEM );
+ return DFB_INIT;
+ }
+
+ data->mem = mmap( NULL, mem_length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, mem_phys );
+ if (data->mem == MAP_FAILED) {
+ D_PERROR( "System/DevMem: Mapping %d bytes at 0x%08lx via '%s' failed!\n", mem_length, mem_phys, DEV_MEM );
+ return DFB_INIT;
+ }
+
+ if (reg_phys && reg_length) {
+ data->reg = mmap( NULL, reg_length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, reg_phys );
+ if (data->reg == MAP_FAILED) {
+ D_PERROR( "System/DevMem: Mapping %d bytes at 0x%08lx via '%s' failed!\n", reg_length, reg_phys, DEV_MEM );
+ munmap( data->mem, mem_length );
+ close( fd );
+ return DFB_INIT;
+ }
+ }
+
+ close( fd );
+
+ return DFB_OK;
+}
+
+static void
+UnmapMemAndReg( DevMemData *data,
+ unsigned int mem_length,
+ unsigned int reg_length )
+{
+ munmap( data->mem, mem_length );
+
+ if (reg_length)
+ munmap( (void*) data->reg, reg_length );
+}
+
+/**********************************************************************************************************************/
+
+static void
+system_get_info( CoreSystemInfo *info )
+{
+ info->type = CORE_DEVMEM;
+ info->caps = CSCAPS_ACCELERATION;
+
+ snprintf( info->name, DFB_CORE_SYSTEM_INFO_NAME_LENGTH, "DevMem" );
+}
+
+static DFBResult
+system_initialize( CoreDFB *core, void **ret_data )
+{
+ DFBResult ret;
+ DevMemData *data;
+ DevMemDataShared *shared;
+ FusionSHMPoolShared *pool;
+
+ D_ASSERT( m_data == NULL );
+
+ if (!dfb_config->video_phys || !dfb_config->video_length) {
+ D_ERROR( "System/DevMem: Please supply 'video-phys = 0xXXXXXXXX' and 'video-length = XXXX' options!\n" );
+ return DFB_INVARG;
+ }
+
+ if (dfb_config->mmio_phys && !dfb_config->mmio_length) {
+ D_ERROR( "System/DevMem: Please supply both 'mmio-phys = 0xXXXXXXXX' and 'mmio-length = XXXX' options or none!\n" );
+ return DFB_INVARG;
+ }
+
+ data = D_CALLOC( 1, sizeof(DevMemData) );
+ if (!data)
+ return D_OOM();
+
+ pool = dfb_core_shmpool( core );
+
+ shared = SHCALLOC( pool, 1, sizeof(DevMemDataShared) );
+ if (!shared) {
+ D_FREE( data );
+ return D_OOSHM();
+ }
+
+ shared->shmpool = pool;
+
+ data->shared = shared;
+
+ ret = MapMemAndReg( data,
+ dfb_config->video_phys, dfb_config->video_length,
+ dfb_config->mmio_phys, dfb_config->mmio_length );
+ if (ret) {
+ SHFREE( pool, shared );
+ D_FREE( data );
+ return ret;
+ }
+
+
+ *ret_data = m_data = data;
+
+ dfb_surface_pool_initialize( core, &devmemSurfacePoolFuncs, &shared->pool );
+
+ fusion_arena_add_shared_field( dfb_core_arena( core ), "devmem", shared );
+
+ return DFB_OK;
+}
+
+static DFBResult
+system_join( CoreDFB *core, void **ret_data )
+{
+ DFBResult ret;
+ void *tmp;
+ DevMemData *data;
+ DevMemDataShared *shared;
+
+ D_ASSERT( m_data == NULL );
+
+ if (!dfb_config->video_phys || !dfb_config->video_length) {
+ D_ERROR( "System/DevMem: Please supply 'video-phys = 0xXXXXXXXX' and 'video-length = XXXX' options!\n" );
+ return DFB_INVARG;
+ }
+
+ if (dfb_config->mmio_phys && !dfb_config->mmio_length) {
+ D_ERROR( "System/DevMem: Please supply both 'mmio-phys = 0xXXXXXXXX' and 'mmio-length = XXXX' options or none!\n" );
+ return DFB_INVARG;
+ }
+
+ data = D_CALLOC( 1, sizeof(DevMemData) );
+ if (!data)
+ return D_OOM();
+
+ ret = fusion_arena_get_shared_field( dfb_core_arena( core ), "devmem", &tmp );
+ if (ret) {
+ D_FREE( data );
+ return ret;
+ }
+
+ data->shared = shared = tmp;
+
+ ret = MapMemAndReg( data,
+ dfb_config->video_phys, dfb_config->video_length,
+ dfb_config->mmio_phys, dfb_config->mmio_length );
+ if (ret) {
+ D_FREE( data );
+ return ret;
+ }
+
+ *ret_data = m_data = data;
+
+ dfb_surface_pool_join( core, shared->pool, &devmemSurfacePoolFuncs );
+
+ return DFB_OK;
+}
+
+static DFBResult
+system_shutdown( bool emergency )
+{
+ DevMemDataShared *shared;
+
+ D_ASSERT( m_data != NULL );
+
+ shared = m_data->shared;
+ D_ASSERT( shared != NULL );
+
+ dfb_surface_pool_destroy( shared->pool );
+
+ UnmapMemAndReg( m_data, dfb_config->video_length, dfb_config->mmio_length );
+
+ SHFREE( shared->shmpool, shared );
+
+ D_FREE( m_data );
+ m_data = NULL;
+
+ return DFB_OK;
+}
+
+static DFBResult
+system_leave( bool emergency )
+{
+ DevMemDataShared *shared;
+
+ D_ASSERT( m_data != NULL );
+
+ shared = m_data->shared;
+ D_ASSERT( shared != NULL );
+
+ dfb_surface_pool_leave( shared->pool );
+
+ UnmapMemAndReg( m_data, dfb_config->video_length, dfb_config->mmio_length );
+
+ D_FREE( m_data );
+ m_data = NULL;
+
+ return DFB_OK;
+}
+
+static DFBResult
+system_suspend( void )
+{
+ D_ASSERT( m_data != NULL );
+
+ return DFB_OK;
+}
+
+static DFBResult
+system_resume( void )
+{
+ D_ASSERT( m_data != NULL );
+
+ return DFB_OK;
+}
+
+static volatile void *
+system_map_mmio( unsigned int offset,
+ int length )
+{
+ D_ASSERT( m_data != NULL );
+
+ return m_data->reg + offset;
+}
+
+static void
+system_unmap_mmio( volatile void *addr,
+ int length )
+{
+}
+
+static int
+system_get_accelerator( void )
+{
+ return dfb_config->accelerator;
+}
+
+static VideoMode *
+system_get_modes( void )
+{
+ return NULL;
+}
+
+static VideoMode *
+system_get_current_mode( void )
+{
+ return NULL;
+}
+
+static DFBResult
+system_thread_init( void )
+{
+ return DFB_OK;
+}
+
+static bool
+system_input_filter( CoreInputDevice *device,
+ DFBInputEvent *event )
+{
+ return false;
+}
+
+static unsigned long
+system_video_memory_physical( unsigned int offset )
+{
+ return dfb_config->video_phys + offset;
+}
+
+static void *
+system_video_memory_virtual( unsigned int offset )
+{
+ D_ASSERT( m_data != NULL );
+
+ return m_data->mem + offset;
+}
+
+static unsigned int
+system_videoram_length( void )
+{
+ return dfb_config->video_length;
+}
+
+static unsigned long
+system_aux_memory_physical( unsigned int offset )
+{
+ return 0;
+}
+
+static void *
+system_aux_memory_virtual( unsigned int offset )
+{
+ return NULL;
+}
+
+static unsigned int
+system_auxram_length( void )
+{
+ return 0;
+}
+
+static void
+system_get_busid( int *ret_bus, int *ret_dev, int *ret_func )
+{
+ return;
+}
+
+static void
+system_get_deviceid( unsigned int *ret_vendor_id,
+ unsigned int *ret_device_id )
+{
+ return;
+}
+
generated by cgit (git 2.34.1) at 2024-04-23 19:17:01 +0000