diff --git a/src/add-ons/kernel/drivers/graphics/common/Jamfile b/src/add-ons/kernel/drivers/graphics/common/Jamfile
new file mode 100644
index 0000000000..1f08875eaa
--- /dev/null
+++ b/src/add-ons/kernel/drivers/graphics/common/Jamfile
@@ -0,0 +1,13 @@
+SubDir OBOS_TOP src add-ons kernel drivers graphics common ;
+
+SubDirCcFlags -DENABLE_LOGGING -DLOG_INCLUDE_STARTUP ;
+
+UsePrivateHeaders graphics ;
+UsePrivateHeaders [ FDirName graphics radeon ] ;
+UsePrivateHeaders [ FDirName graphics common ] ;
+
+StaticLibrary graphicscommon :
+	log_coll.c
+	log_dump.c
+	memmgr.c
+;
diff --git a/src/add-ons/kernel/drivers/graphics/common/log_coll.c b/src/add-ons/kernel/drivers/graphics/common/log_coll.c
new file mode 100644
index 0000000000..811e749e50
--- /dev/null
+++ b/src/add-ons/kernel/drivers/graphics/common/log_coll.c
@@ -0,0 +1,129 @@
+/*
+	Copyright (c) 2002, Thomas Kurschel
+
+
+	Part of Radeon driver
+		
+	Both kernel and user space part.
+	(init and clean-up must be done in
+	kernel space).
+*/
+
+
+#include <KernelExport.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <perfmon_kernel.h>
+#include "log_coll.h"
+#include <OS.h>
+#include <string.h>
+
+typedef struct log_info_t {
+	char *log_buffer;
+	uint32 log_buffer_len;
+	uint32 log_buffer_pos;
+	area_id area;
+} log_info;
+
+#ifdef ENABLE_LOGGING
+
+
+// write one log entry
+void log( log_info *li, uint16 what, const uint8 num_args, ... )
+{
+	uint32 pos;
+	va_list vl;
+	log_entry *entry;
+	uint32 i;
+	uint32 entry_size;
+	
+	entry_size = sizeof( log_entry ) + (num_args - 1) * sizeof( uint32 );
+	pos = atomic_add( &li->log_buffer_pos, entry_size );
+		
+	if( li->log_buffer_pos > li->log_buffer_len ) {
+		atomic_add( &li->log_buffer_pos, -entry_size );
+		return;
+	}
+	
+	entry = (log_entry *)&li->log_buffer[pos];
+	
+	entry->tsc = read_tsc();
+	entry->what = what;
+	entry->num_args = num_args;
+	
+	va_start( vl, num_args );
+	for( i = 0; i < num_args; ++i ) {
+		entry->args[i] = va_arg( vl, uint32 );
+	}
+	va_end( vl );
+}
+
+#ifdef LOG_INCLUDE_STARTUP
+
+// create log buffer
+log_info *log_init( uint32 size )
+{
+	log_info *li;
+	area_id area;
+
+	// buffer must be accessible from user mem
+	// to allow logging from there as well;
+	// you cannot clone this area as there are
+	// pointers which would break (it wouldn't be
+	// hard to get rid of them, but I don't care
+	// and keep it as simple as possible)
+	area = create_area( "fast_logger", 
+		(void **)&li, B_ANY_KERNEL_ADDRESS, 
+		(sizeof( log_info ) + size + (B_PAGE_SIZE - 1)) & ~(B_PAGE_SIZE - 1), 
+		B_FULL_LOCK, B_READ_AREA | B_WRITE_AREA );
+		
+	if( area < 0 )
+		panic( "Radeon Fast logger: cannot allocate %ld byte for logging data\n", size );
+
+	li->area = area;
+	li->log_buffer = (char *)li + sizeof( log_info );
+	li->log_buffer_len = size;
+	li->log_buffer_pos = 0;
+	
+	return li;
+}
+
+// clean-up logging
+void log_exit( log_info *li )
+{
+	li->log_buffer_pos = 0;
+	//free( li->log_buffer );
+	delete_area( li->area );
+}
+
+#endif
+
+#endif
+
+
+#ifdef LOG_INCLUDE_STARTUP
+
+// get *current* size of logging data
+uint32 log_getsize( log_info *li )
+{
+	if( li == NULL )
+		return 0;
+		
+	dprintf( "RADEON -- log_getsize: log_pos %ld\n", li->log_buffer_pos );
+	return li->log_buffer_pos;
+}
+
+// get up to max_size bytes of logging data
+void log_getcopy( log_info *li, void *dest, uint32 max_size )
+{
+	if( li == NULL )
+		return;
+		
+	dprintf( "RADEON -- log_getcopy: max_size %ld, log_pos %ld\n", 
+		max_size, li->log_buffer_pos );
+	memcpy( dest, li->log_buffer, min( li->log_buffer_pos, max_size ));
+	
+	li->log_buffer_pos = 0;
+}
+
+#endif
diff --git a/src/add-ons/kernel/drivers/graphics/common/log_dump.c b/src/add-ons/kernel/drivers/graphics/common/log_dump.c
new file mode 100644
index 0000000000..6f8c62e27e
--- /dev/null
+++ b/src/add-ons/kernel/drivers/graphics/common/log_dump.c
@@ -0,0 +1,73 @@
+/*
+	Copyright (c) 2002, Thomas Kurschel
+
+
+	Part of Radeon driver
+		
+	Fast logger - functions to create dump
+*/
+
+
+#include <stdio.h>
+#include <OS.h>
+
+#include "log_coll.h"
+#include "log_dump.h"
+#include "log_enum.h"
+#include "log_names.h"
+
+system_info sysinfo;
+
+// dump one entry
+void log_printentry( FILE *logfile, log_entry *entry )
+{
+	uint64 time;
+	uint32 min, sec, mill, mic;
+		
+	time = entry->tsc / (sysinfo.cpu_clock_speed / 1000000);
+	mic = time % 1000;
+	time /= 1000;
+	mill = time % 1000;
+	time /= 1000;
+	sec = time % 60;
+	time /= 60;
+	min = time;
+	
+	fprintf( logfile, "%03ld:%02ld:%03ld.%03ld ", min, sec, mill, mic );
+	if( entry->what < sizeof( log_names ) / sizeof( log_names[0] ) )
+		fprintf( logfile, log_names[entry->what] );
+	else
+		fprintf( logfile, "unknown %ld", (uint32)entry->what );
+		
+	if( entry->num_args > 0 ) {
+		uint32 i;
+		
+		fprintf( logfile, " (" );
+		for( i = 0; i < entry->num_args; ++i ) {
+			if( i > 0 )
+				fprintf( logfile, ", " );
+				
+			fprintf( logfile, "0x%08lx", entry->args[i] );
+		}
+		fprintf( logfile, ")" );
+	}
+	
+	fprintf( logfile, "\n" );
+}
+
+
+// dump entire log
+void log_printall( FILE *logfile, char *buffer, uint32 buffer_len )
+{
+	uint32 pos;
+	
+	get_system_info( &sysinfo );
+
+	for( pos = 0; pos < buffer_len;  ) {
+		log_entry *entry;
+		
+		entry = (log_entry *)(buffer + pos);
+		log_printentry( logfile, entry/*, &tsc*/ );
+		pos += sizeof( log_entry ) + (entry->num_args - 1) * sizeof( uint32 );
+	}
+}
diff --git a/src/add-ons/kernel/drivers/graphics/common/memmgr.c b/src/add-ons/kernel/drivers/graphics/common/memmgr.c
new file mode 100644
index 0000000000..3d10cc9da0
--- /dev/null
+++ b/src/add-ons/kernel/drivers/graphics/common/memmgr.c
@@ -0,0 +1,273 @@
+/*
+	Copyright (c) 2002, Thomas Kurschel
+
+
+	Part of Radeon kernel driver
+		
+	Memory manager used for graphics mem
+	
+	
+	It has the following features
+	- doesn't access memory to be managed
+	- memory block's owner is identified by tag,
+	  tag is verified during free, and all memory
+	  belonging to one tag can be freed at once
+	- multi-threading save
+*/
+
+#include "memmgr.h"
+#include <malloc.h>
+#include "KernelExport.h"
+
+#define debug_level_flow 4
+#define debug_level_info 4
+#define debug_level_error 4
+
+#define DEBUG_MSG_PREFIX "Graphics Driver - "
+#include "debug_ext.h"
+
+
+#if 0
+#ifndef _KERNEL_MODE
+void    _kdprintf_(const char *format, ...);
+//bool    set_dprintf_enabled(bool);	/* returns old enable flag */
+
+#define dprintf _kdprintf_
+#endif
+#endif
+
+
+// init manager
+//   start - start of address space
+//   len - len of address space
+//   block_size - granularity
+//   heap_entries - maximum number of blocks
+mem_info *mem_init( uint32 start, uint32 len, uint32 block_size, uint32 heap_entries )
+{
+	mem_block *first;
+	mem_info *mem;
+	uint i;
+	
+	SHOW_FLOW( 2, "start=%lx, len=%lx, block_size=%lx, heap_entries=%ld",
+		start, len, block_size, heap_entries );
+	
+	mem = malloc( sizeof( *mem ));
+	if( mem == NULL )
+		goto err;
+	
+	mem->block_size = block_size;
+	mem->heap_entries = heap_entries;
+	mem->lock = create_sem( 1, "mem_lock" );
+	
+	if( mem->lock < 0 )
+		goto err2;
+		
+	mem->heap = malloc( heap_entries * sizeof( mem_block ));
+	if( mem->heap == NULL )
+		goto err3;
+		
+	for( i = 1; i < heap_entries; ++i )
+		mem->heap[i].next = &mem->heap[i+1];
+		
+	mem->heap[heap_entries - 1].next = NULL;
+	mem->unused = &mem->heap[1];
+
+	first = &mem->heap[0];
+	mem->first = first;
+	
+	first->base = start;
+	first->size = len;
+	first->prev = first->next = NULL;
+	first->alloced = false;
+	
+	return mem;
+
+err3:
+	delete_sem( mem->lock );	
+err2:
+	free( mem );
+err:
+	return NULL;
+}
+
+
+// destroy heap
+void mem_destroy( mem_info *mem )
+{	
+	SHOW_FLOW0( 2, "" );
+	
+	free( mem->heap );
+	delete_sem( mem->lock );
+	free( mem );
+}
+
+
+// allocate memory block
+// in:
+//   mem - heap handle
+//   size - size in bytes
+//   tag - owner tag
+// out:
+//   block_id - block id
+//   offset - start address of block
+status_t mem_alloc( mem_info *mem, uint32 size, void *tag, uint32 *block_id, uint32 *offset )
+{
+	mem_block *cur, *new_entry;
+	
+	SHOW_FLOW( 2, "size=%ld, tag=%p", size, tag );
+	
+	acquire_sem( mem->lock );
+
+	// we assume block_size is power of two	
+	size = (size + mem->block_size - 1) & ~(mem->block_size - 1);
+
+	// simple first fit	
+	for( cur = mem->first; cur; cur = cur->next ) {
+		if( !cur->alloced && cur->size >= size )
+			break;
+	}
+	
+	if( cur == NULL ) {
+		SHOW_FLOW0( 2, "out of memory" );
+		goto err;
+	}
+	
+	if( size != cur->size ) {
+		new_entry = mem->unused;
+		
+		if( new_entry == NULL ) {
+			SHOW_FLOW0( 2, "out of blocks" );
+			goto err;
+		}
+		
+		mem->unused = new_entry->next;
+	
+		new_entry->next = cur->next;
+		new_entry->prev = cur;	
+		new_entry->alloced = false;
+		new_entry->base = cur->base + size;
+		new_entry->size = cur->size - size;
+		
+		if( cur->next )
+			cur->next->prev = new_entry;
+			
+		cur->next = new_entry;
+		cur->size = size;
+	}
+
+	cur->alloced = true;
+	cur->tag = tag;
+	
+	*block_id = cur - mem->heap + 1;
+	*offset = cur->base;
+
+	release_sem( mem->lock );
+	
+	SHOW_FLOW( 2, "block_id=%ld, offset=%lx", *block_id, *offset );
+	
+	return B_OK;
+	
+err:
+	release_sem( mem->lock );
+	return B_NO_MEMORY;
+}
+
+
+// merge "block" with successor
+static void merge( mem_info *mem, mem_block *block )
+{
+	mem_block *next;
+	
+	next = block->next;
+	
+	block->size += next->size;
+	
+	if( next->next )
+		next->next->prev = block;
+	
+	block->next = next->next;
+
+	next->next = mem->unused;
+	mem->unused = next;
+}
+
+
+// internal: free memory block including merge
+static mem_block *freeblock( mem_info *mem, mem_block *block )
+{
+	mem_block *prev, *next;
+
+	block->alloced = false;
+	
+	prev = block->prev;
+	
+	if( prev && !prev->alloced ) {
+		block = prev;
+		merge( mem, prev );
+	}
+
+	next = block->next;
+		
+	if( next && !next->alloced )
+		merge( mem, block );
+		
+	return block;
+}
+
+
+// free memory
+//   mem - heap handle
+//   block_id - block id
+//   tag - owner tag (must match tag passed to mem_alloc)
+status_t mem_free( mem_info *mem, uint32 block_id, void *tag )
+{	
+	mem_block *block;
+	
+	SHOW_FLOW( 2, "block_id=%ld, tag=%p", block_id, tag );
+	
+	acquire_sem( mem->lock );
+	
+	--block_id;
+	
+	if( block_id >= mem->heap_entries ) {
+		SHOW_ERROR0( 2, "invalid id" );
+		goto err;
+	}
+		
+	block = &mem->heap[block_id];
+	if( !block->alloced || block->tag != tag ) {
+		SHOW_ERROR0( 2, "not owner" );
+		goto err;
+	}
+	
+	freeblock( mem, block );
+		
+	release_sem( mem->lock );
+	
+	SHOW_FLOW0( 2, "success" );
+	return B_OK;
+	
+err:
+	release_sem( mem->lock );
+	return B_BAD_VALUE;
+}
+
+
+// free all memory belonging to owner "tag"
+void mem_freetag( mem_info *mem, void *tag )
+{
+	mem_block *cur;
+	
+	SHOW_FLOW( 2, "tag=%p", tag );
+	
+	acquire_sem( mem->lock );
+	
+	for( cur = mem->first; cur; cur = cur->next ) {
+		if( cur->alloced && cur->tag == tag )
+			cur = freeblock( mem, cur );
+	}
+	
+	release_sem( mem->lock );
+	
+	SHOW_FLOW0( 2, "done" );
+}