mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
151 lines
3.7 KiB
C
151 lines
3.7 KiB
C
/*
|
|
*
|
|
* ===================================
|
|
* HARP | Host ATM Research Platform
|
|
* ===================================
|
|
*
|
|
*
|
|
* This Host ATM Research Platform ("HARP") file (the "Software") is
|
|
* made available by Network Computing Services, Inc. ("NetworkCS")
|
|
* "AS IS". NetworkCS does not provide maintenance, improvements or
|
|
* support of any kind.
|
|
*
|
|
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
|
|
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
|
|
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
|
|
* In no event shall NetworkCS be responsible for any damages, including
|
|
* but not limited to consequential damages, arising from or relating to
|
|
* any use of the Software or related support.
|
|
*
|
|
* Copyright 1994-1998 Network Computing Services, Inc.
|
|
*
|
|
* Copies of this Software may be made, however, the above copyright
|
|
* notice must be reproduced on all copies.
|
|
*
|
|
* @(#) $FreeBSD$
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Efficient ENI Adapter Support
|
|
* -----------------------------
|
|
*
|
|
* Driver initialization support
|
|
*
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/socket.h>
|
|
#include <net/if.h>
|
|
#include <netatm/port.h>
|
|
#include <netatm/queue.h>
|
|
#include <netatm/atm.h>
|
|
#include <netatm/atm_sys.h>
|
|
#include <netatm/atm_cm.h>
|
|
#include <netatm/atm_if.h>
|
|
|
|
#include <dev/hea/eni_stats.h>
|
|
#include <dev/hea/eni.h>
|
|
#include <dev/hea/eni_var.h>
|
|
|
|
#ifndef lint
|
|
__RCSID("@(#) $FreeBSD$");
|
|
#endif
|
|
|
|
/*
|
|
* Initialize adapter for PDU processing
|
|
*
|
|
* Enable interrupts, set master control, initialize TX buffer,
|
|
* set initial pointers, etc.
|
|
*
|
|
* Arguments:
|
|
* eup pointer to device unit structure
|
|
*
|
|
* Returns:
|
|
* 0 successful
|
|
* error error condition
|
|
*/
|
|
int
|
|
eni_init ( eup )
|
|
Eni_unit *eup;
|
|
{
|
|
u_long words, order;
|
|
|
|
/*
|
|
* Allocate one large TX buffer. Currently we use only one
|
|
* channel with full cell rate which all VCs will use.
|
|
* This will (probably) have to change (alot) when we
|
|
* implement QoS.
|
|
*/
|
|
/*
|
|
* Server cards, which have more then 512KB of RAM, will
|
|
* allocate a 128KB TX buffer, while client cards, with
|
|
* 512KB or less will allocate a 32KB TX buffer.
|
|
*/
|
|
words = ( eup->eu_ramsize > MAX_CLIENT_RAM * ENI_BUF_PGSZ ?
|
|
TX_LARGE_BSIZE : TX_SMALL_BSIZE ) * ENI_BUF_PGSZ;
|
|
if ( ( eup->eu_txbuf = eni_allocate_buffer ( eup, &words ) ) ==
|
|
(caddr_t)NULL ) {
|
|
return ENOMEM;
|
|
}
|
|
eup->eu_txsize = words >> 2; /* Bytes to words */
|
|
words >>= ENI_LOC_PREDIV; /* Predivide by 256 words */
|
|
for ( order = -1; words; order++ )
|
|
words >>= 1;
|
|
eup->eu_midway[MIDWAY_TXPLACE] =
|
|
(order << TXSIZE_SHIFT) | ((int)eup->eu_txbuf >> ENI_LOC_PREDIV);
|
|
eup->eu_txpos = eup->eu_midway[MIDWAY_DESCR] & 0x7FFF;
|
|
/*
|
|
* Set first word of unack'ed data to start
|
|
*/
|
|
eup->eu_txfirst = eup->eu_txpos;
|
|
|
|
/*
|
|
* Set initial values of local DMA pointer used to prevent wraps
|
|
*/
|
|
eup->eu_txdmawr = 0;
|
|
eup->eu_rxdmawr = 0;
|
|
|
|
/*
|
|
* Initialize queue's for receive/transmit pdus
|
|
*/
|
|
eup->eu_txqueue.ifq_maxlen = ENI_IFQ_MAXLEN;
|
|
eup->eu_rxqueue.ifq_maxlen = ENI_IFQ_MAXLEN;
|
|
|
|
/*
|
|
* Acknowledge any interrupts
|
|
*/
|
|
(void) eup->eu_midway[MIDWAY_ISA];
|
|
|
|
/*
|
|
* "Zero" Sonet error counters
|
|
*/
|
|
eni_zero_stats ( eup );
|
|
|
|
/*
|
|
* Set master control register
|
|
*
|
|
* IntSel1 | LOCK_MODE | DMA_ENABLE | TX_ENABLE | RX_ENABLE
|
|
*
|
|
*/
|
|
eup->eu_midway[MIDWAY_MASTER] = 1 << ENI_ISEL_SHIFT |
|
|
ENI_M_DMAENABLE | ENI_M_TXENABLE | ENI_M_RXENABLE;
|
|
|
|
/*
|
|
* Enable interrupts
|
|
*/
|
|
eup->eu_midway[MIDWAY_IE] = ENI_INT_SERVICE | ENI_INT_RX_DMA |
|
|
ENI_INT_TX_DMA | ENI_INT_DMA_ERR | ENI_INT_DMA_LERR |
|
|
ENI_INT_IDEN | ENI_INT_DMA_OVFL;
|
|
|
|
/*
|
|
* Last thing to do is to indicate that we've finished initializing
|
|
* this unit.
|
|
*/
|
|
eup->eu_flags |= CUF_INITED;
|
|
|
|
return 0;
|
|
}
|
|
|