mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 05:04:00 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
197 lines
7.0 KiB
C
197 lines
7.0 KiB
C
/****************************************************************************
|
|
******* *******
|
|
******* 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 ***********/
|