Add new files for HARP3

Host ATM Research Platform (HARP), Network Computing Services, Inc.
This software was developed with the support of the Defense Advanced
Research Projects Agency (DARPA).

1 files changed, 142 insertions, 0 deletions

diff --git a/sys/dev/hea/eni_init.c b/sys/dev/hea/eni_init.c
new file mode 100644
index 0000000..d8106ab
--- /dev/null
+++ b/sys/dev/hea/eni_init.c
@@ -0,0 +1,142 @@
+/*
+ *
+ * ===================================
+ * 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.
+ *
+ *	@(#) $Id: eni_init.c,v 1.6 1998/08/26 23:28:53 mks Exp $
+ *
+ */
+
+/*
+ * Efficient ENI Adapter Support
+ * -----------------------------
+ *
+ * Driver initialization support
+ *
+ */
+
+#ifndef lint
+static char *RCSid = "@(#) $Id: eni_init.c,v 1.6 1998/08/26 23:28:53 mks Exp $";
+#endif
+
+#include <netatm/kern_include.h>
+
+#include <dev/hea/eni_stats.h>
+#include <dev/hea/eni.h>
+#include <dev/hea/eni_var.h>
+
+/*
+ * 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;
+}
+