drivers/char/rio/list.h - kernel/msm-4.9 - Gitiles

 /****************************************************************************
  *******                                                              *******
  *******                      L I S T                                 *******
  *******                                                              *******
  ****************************************************************************

  Author  : Jeremy Rolls.
  Date    : 04-Nov-1990

  *
  *  (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
  *
  *      This program is free software; you can redistribute it and/or modify
  *      it under the terms of the GNU General Public License as published by
  *      the Free Software Foundation; either version 2 of the License, or
  *      (at your option) any later version.
  *
  *      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., 675 Mass Ave, Cambridge, MA 02139, USA.

  Version : 0.01


                             Mods
  ----------------------------------------------------------------------------
   Date     By                Description
  ----------------------------------------------------------------------------
  ***************************************************************************/

 #ifndef _list_h
 #define _list_h 1

 #ifdef SCCS_LABELS
 #ifndef lint
 static char *_rio_list_h_sccs = "@(#)list.h	1.9" ;
 #endif
 #endif

 #define PKT_IN_USE    0x1

 #ifdef INKERNEL

 #define ZERO_PTR (ushort) 0x8000
 #define	CaD	PortP->Caddr

 /*
 ** We can add another packet to a transmit queue if the packet pointer pointed
 ** to by the TxAdd pointer has PKT_IN_USE clear in its address.
 */

 #ifndef linux
 #if defined( MIPS ) && !defined( MIPSEISA )
 /* May the shoes of the Devil dance on your grave for creating this */
 #define   can_add_transmit(PacketP,PortP) \
           (!((uint)(PacketP = (struct PKT *)RIO_PTR(CaD,RINDW(PortP->TxAdd))) \
           & (PKT_IN_USE<<2)))

 #elif  defined(MIPSEISA) || defined(nx6000) || \
        defined(drs6000)  || defined(UWsparc)

 #define   can_add_transmit(PacketP,PortP) \
           (!((uint)(PacketP = (struct PKT *)RIO_PTR(CaD,RINDW(PortP->TxAdd))) \
 	  & PKT_IN_USE))

 #else
 #define   can_add_transmit(PacketP,PortP) \
           (!((uint)(PacketP = (struct PKT *)RIO_PTR(CaD,*PortP->TxAdd)) \
 	  & PKT_IN_USE))
 #endif

 /*
 ** To add a packet to the queue, you set the PKT_IN_USE bit in the address,
 ** and then move the TxAdd pointer along one position to point to the next
 ** packet pointer. You must wrap the pointer from the end back to the start.
 */
 #if defined(MIPS) || defined(nx6000) || defined(drs6000) || defined(UWsparc)
 #   define add_transmit(PortP)  \
 	WINDW(PortP->TxAdd,RINDW(PortP->TxAdd) | PKT_IN_USE);\
 	if (PortP->TxAdd == PortP->TxEnd)\
 	    PortP->TxAdd = PortP->TxStart;\
 	else\
 	    PortP->TxAdd++;\
 	WWORD(PortP->PhbP->tx_add , RIO_OFF(CaD,PortP->TxAdd));
 #elif defined(AIX)
 #   define add_transmit(PortP)  \
 	{\
 	    register ushort *TxAddP = (ushort *)RIO_PTR(Cad,PortP->TxAddO);\
 	    WINDW( TxAddP, RINDW( TxAddP ) | PKT_IN_USE );\
 	    if (PortP->TxAddO == PortP->TxEndO )\
 		PortP->TxAddO = PortP->TxStartO;\
 	    else\
 		PortP->TxAddO += sizeof(ushort);\
 	    WWORD(((PHB *)RIO_PTR(Cad,PortP->PhbO))->tx_add , PortP->TxAddO );\
 	}
 #else
 #   define add_transmit(PortP)  \
 	*PortP->TxAdd |= PKT_IN_USE;\
 	if (PortP->TxAdd == PortP->TxEnd)\
 	    PortP->TxAdd = PortP->TxStart;\
 	else\
 	    PortP->TxAdd++;\
 	PortP->PhbP->tx_add = RIO_OFF(CaD,PortP->TxAdd);
 #endif

 /*
 ** can_remove_receive( PacketP, PortP ) returns non-zero if PKT_IN_USE is set
 ** for the next packet on the queue. It will also set PacketP to point to the
 ** relevant packet, [having cleared the PKT_IN_USE bit]. If PKT_IN_USE is clear,
 ** then can_remove_receive() returns 0.
 */
 #if defined(MIPS) || defined(nx6000) || defined(drs6000) || defined(UWsparc)
 #   define can_remove_receive(PacketP,PortP) \
 	((RINDW(PortP->RxRemove) & PKT_IN_USE) ? \
 	(PacketP=(struct PKT *)RIO_PTR(CaD,(RINDW(PortP->RxRemove) & ~PKT_IN_USE))):0)
 #elif defined(AIX)
 #   define can_remove_receive(PacketP,PortP) \
 	((RINDW((ushort *)RIO_PTR(Cad,PortP->RxRemoveO)) & PKT_IN_USE) ? \
 	(PacketP=(struct PKT *)RIO_PTR(Cad,RINDW((ushort *)RIO_PTR(Cad,PortP->RxRemoveO)) & ~PKT_IN_USE)):0)
 #else
 #   define can_remove_receive(PacketP,PortP) \
 	((*PortP->RxRemove & PKT_IN_USE) ? \
 	(PacketP=(struct PKT *)RIO_PTR(CaD,(*PortP->RxRemove & ~PKT_IN_USE))):0)
 #endif


 /*
 ** Will God see it within his heart to forgive us for this thing that
 ** we have created? To remove a packet from the receive queue you clear
 ** its PKT_IN_USE bit, and then bump the pointers. Once the pointers
 ** get to the end, they must be wrapped back to the start.
 */
 #if defined(MIPS) || defined(nx6000) || defined(drs6000) || defined(UWsparc)
 #   define remove_receive(PortP) \
 	WINDW(PortP->RxRemove, (RINDW(PortP->RxRemove) & ~PKT_IN_USE));\
 	if (PortP->RxRemove == PortP->RxEnd)\
 	    PortP->RxRemove = PortP->RxStart;\
 	else\
 	    PortP->RxRemove++;\
 	WWORD(PortP->PhbP->rx_remove , RIO_OFF(CaD,PortP->RxRemove));
 #elif defined(AIX)
 #   define remove_receive(PortP) \
     {\
         register ushort *RxRemoveP = (ushort *)RIO_PTR(Cad,PortP->RxRemoveO);\
         WINDW( RxRemoveP, RINDW( RxRemoveP ) & ~PKT_IN_USE );\
         if (PortP->RxRemoveO == PortP->RxEndO)\
             PortP->RxRemoveO = PortP->RxStartO;\
         else\
             PortP->RxRemoveO += sizeof(ushort);\
         WWORD(((PHB *)RIO_PTR(Cad,PortP->PhbO))->rx_remove, PortP->RxRemoveO );\
     }
 #else
 #   define remove_receive(PortP) \
 	*PortP->RxRemove &= ~PKT_IN_USE;\
 	if (PortP->RxRemove == PortP->RxEnd)\
 	    PortP->RxRemove = PortP->RxStart;\
 	else\
 	    PortP->RxRemove++;\
 	PortP->PhbP->rx_remove = RIO_OFF(CaD,PortP->RxRemove);
 #endif
 #endif


 #else /* !IN_KERNEL */

 #define ZERO_PTR NULL


 #ifdef HOST
 /* #define can_remove_transmit(pkt,phb) ((((char*)pkt = (*(char**)(phb->tx_remove))-1) || 1)) && (*phb->u3.s2.tx_remove_ptr & PKT_IN_USE))   */
 #define remove_transmit(phb) *phb->u3.s2.tx_remove_ptr &= ~(ushort)PKT_IN_USE;\
                              if (phb->tx_remove == phb->tx_end)\
                                 phb->tx_remove = phb->tx_start;\
                              else\
                                 phb->tx_remove++;
 #define can_add_receive(phb) !(*phb->u4.s2.rx_add_ptr & PKT_IN_USE)
 #define add_receive(pkt,phb) *phb->rx_add = pkt;\
                              *phb->u4.s2.rx_add_ptr |= PKT_IN_USE;\
                              if (phb->rx_add == phb->rx_end)\
                                 phb->rx_add = phb->rx_start;\
                              else\
                                 phb->rx_add++;
 #endif
 #endif

 #ifdef RTA
 #define splx(oldspl)    if ((oldspl) == 0) spl0()
 #endif

 #endif /* ifndef _list.h */
 /*********** end of file ***********/
	/****************************************************************************
	***** *****
	***** L I S T *****
	***** *****
	****************************************************************************

	Author : Jeremy Rolls.
	Date : 04-Nov-1990

	*
	* (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* 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., 675 Mass Ave, Cambridge, MA 02139, USA.

	Version : 0.01


	Mods
	----------------------------------------------------------------------------
	Date By Description
	----------------------------------------------------------------------------
	***************************************************************************/

	#ifndef _list_h
	#define _list_h 1

	#ifdef SCCS_LABELS
	#ifndef lint
	static char *_rio_list_h_sccs = "@(#)list.h 1.9" ;
	#endif
	#endif

	#define PKT_IN_USE 0x1

	#ifdef INKERNEL

	#define ZERO_PTR (ushort) 0x8000
	#define CaD PortP->Caddr

	/*
	** We can add another packet to a transmit queue if the packet pointer pointed
	** to by the TxAdd pointer has PKT_IN_USE clear in its address.
	*/

	#ifndef linux
	#if defined( MIPS ) && !defined( MIPSEISA )
	/* May the shoes of the Devil dance on your grave for creating this */
	#define can_add_transmit(PacketP,PortP) \
	(!((uint)(PacketP = (struct PKT *)RIO_PTR(CaD,RINDW(PortP->TxAdd))) \
	& (PKT_IN_USE<<2)))

	#elif defined(MIPSEISA) \|\| defined(nx6000) \|\| \
	defined(drs6000) \|\| defined(UWsparc)

	#define can_add_transmit(PacketP,PortP) \
	(!((uint)(PacketP = (struct PKT *)RIO_PTR(CaD,RINDW(PortP->TxAdd))) \
	& PKT_IN_USE))

	#else
	#define can_add_transmit(PacketP,PortP) \
	(!((uint)(PacketP = (struct PKT )RIO_PTR(CaD,PortP->TxAdd)) \
	& PKT_IN_USE))
	#endif

	/*
	** To add a packet to the queue, you set the PKT_IN_USE bit in the address,
	** and then move the TxAdd pointer along one position to point to the next
	** packet pointer. You must wrap the pointer from the end back to the start.
	*/
	#if defined(MIPS) \|\| defined(nx6000) \|\| defined(drs6000) \|\| defined(UWsparc)
	# define add_transmit(PortP) \
	WINDW(PortP->TxAdd,RINDW(PortP->TxAdd) \| PKT_IN_USE);\
	if (PortP->TxAdd == PortP->TxEnd)\
	PortP->TxAdd = PortP->TxStart;\
	else\
	PortP->TxAdd++;\
	WWORD(PortP->PhbP->tx_add , RIO_OFF(CaD,PortP->TxAdd));
	#elif defined(AIX)
	# define add_transmit(PortP) \
	{\
	register ushort TxAddP = (ushort )RIO_PTR(Cad,PortP->TxAddO);\
	WINDW( TxAddP, RINDW( TxAddP ) \| PKT_IN_USE );\
	if (PortP->TxAddO == PortP->TxEndO )\
	PortP->TxAddO = PortP->TxStartO;\
	else\
	PortP->TxAddO += sizeof(ushort);\
	WWORD(((PHB *)RIO_PTR(Cad,PortP->PhbO))->tx_add , PortP->TxAddO );\
	}
	#else
	# define add_transmit(PortP) \
	*PortP->TxAdd \|= PKT_IN_USE;\
	if (PortP->TxAdd == PortP->TxEnd)\
	PortP->TxAdd = PortP->TxStart;\
	else\
	PortP->TxAdd++;\
	PortP->PhbP->tx_add = RIO_OFF(CaD,PortP->TxAdd);
	#endif

	/*
	** can_remove_receive( PacketP, PortP ) returns non-zero if PKT_IN_USE is set
	** for the next packet on the queue. It will also set PacketP to point to the
	** relevant packet, [having cleared the PKT_IN_USE bit]. If PKT_IN_USE is clear,
	** then can_remove_receive() returns 0.
	*/
	#if defined(MIPS) \|\| defined(nx6000) \|\| defined(drs6000) \|\| defined(UWsparc)
	# define can_remove_receive(PacketP,PortP) \
	((RINDW(PortP->RxRemove) & PKT_IN_USE) ? \
	(PacketP=(struct PKT *)RIO_PTR(CaD,(RINDW(PortP->RxRemove) & ~PKT_IN_USE))):0)
	#elif defined(AIX)
	# define can_remove_receive(PacketP,PortP) \
	((RINDW((ushort *)RIO_PTR(Cad,PortP->RxRemoveO)) & PKT_IN_USE) ? \
	(PacketP=(struct PKT )RIO_PTR(Cad,RINDW((ushort )RIO_PTR(Cad,PortP->RxRemoveO)) & ~PKT_IN_USE)):0)
	#else
	# define can_remove_receive(PacketP,PortP) \
	((*PortP->RxRemove & PKT_IN_USE) ? \
	(PacketP=(struct PKT )RIO_PTR(CaD,(PortP->RxRemove & ~PKT_IN_USE))):0)
	#endif


	/*
	** Will God see it within his heart to forgive us for this thing that
	** we have created? To remove a packet from the receive queue you clear
	** its PKT_IN_USE bit, and then bump the pointers. Once the pointers
	** get to the end, they must be wrapped back to the start.
	*/
	#if defined(MIPS) \|\| defined(nx6000) \|\| defined(drs6000) \|\| defined(UWsparc)
	# define remove_receive(PortP) \
	WINDW(PortP->RxRemove, (RINDW(PortP->RxRemove) & ~PKT_IN_USE));\
	if (PortP->RxRemove == PortP->RxEnd)\
	PortP->RxRemove = PortP->RxStart;\
	else\
	PortP->RxRemove++;\
	WWORD(PortP->PhbP->rx_remove , RIO_OFF(CaD,PortP->RxRemove));
	#elif defined(AIX)
	# define remove_receive(PortP) \
	{\
	register ushort RxRemoveP = (ushort )RIO_PTR(Cad,PortP->RxRemoveO);\
	WINDW( RxRemoveP, RINDW( RxRemoveP ) & ~PKT_IN_USE );\
	if (PortP->RxRemoveO == PortP->RxEndO)\
	PortP->RxRemoveO = PortP->RxStartO;\
	else\
	PortP->RxRemoveO += sizeof(ushort);\
	WWORD(((PHB *)RIO_PTR(Cad,PortP->PhbO))->rx_remove, PortP->RxRemoveO );\
	}
	#else
	# define remove_receive(PortP) \
	*PortP->RxRemove &= ~PKT_IN_USE;\
	if (PortP->RxRemove == PortP->RxEnd)\
	PortP->RxRemove = PortP->RxStart;\
	else\
	PortP->RxRemove++;\
	PortP->PhbP->rx_remove = RIO_OFF(CaD,PortP->RxRemove);
	#endif
	#endif


	#else /* !IN_KERNEL */

	#define ZERO_PTR NULL


	#ifdef HOST
	/* #define can_remove_transmit(pkt,phb) ((((char)pkt = ((char*)(phb->tx_remove))-1) \|\| 1)) && (phb->u3.s2.tx_remove_ptr & PKT_IN_USE)) */
	#define remove_transmit(phb) *phb->u3.s2.tx_remove_ptr &= ~(ushort)PKT_IN_USE;\
	if (phb->tx_remove == phb->tx_end)\
	phb->tx_remove = phb->tx_start;\
	else\
	phb->tx_remove++;
	#define can_add_receive(phb) !(*phb->u4.s2.rx_add_ptr & PKT_IN_USE)
	#define add_receive(pkt,phb) *phb->rx_add = pkt;\
	*phb->u4.s2.rx_add_ptr \|= PKT_IN_USE;\
	if (phb->rx_add == phb->rx_end)\
	phb->rx_add = phb->rx_start;\
	else\
	phb->rx_add++;
	#endif
	#endif

	#ifdef RTA
	#define splx(oldspl) if ((oldspl) == 0) spl0()
	#endif

	#endif /* ifndef _list.h */
	/********* end of file *********/