/* GT64260eth.h
*
* Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc.
* All rights reserved.
*
* RTEMS/Mvme5500 port 2004 by S. Kate Feng, <feng1@bnl.gov>,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Allegro Networks, Inc., and Wasabi Systems, Inc.
* 4. The name of Allegro Networks, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* 5. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND
* WASABI SYSTEMS, INC. ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC.
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/* Keep the ring sizes a power of two for efficiency.
Making the Tx ring too long decreases the effectiveness of channel
bonding and packet priority.
There are no ill effects from too-large receive rings. */
#define TX_RING_SIZE 32
#define GT_NEXTTX(x) ((x + 1) % TX_RING_SIZE )
#define TX_QUARTER_FULL TX_RING_SIZE/2
#define TX_HALF_FULL TX_RING_SIZE/2
#define RX_RING_SIZE 16
#define HASH_TABLE_SIZE 16
#define HASH_DRAM_SIZE HASH_TABLE_SIZE*1024 /* size of DRAM for hash table */
#define INTR_ERR_SIZE 16
enum GTeth_txprio {
GE_TXPRIO_HI=1,
GE_TXPRIO_LO=0,
GE_TXPRIO_NONE=2
};
enum GTeth_rxprio {
GE_RXPRIO_HI=3,
GE_RXPRIO_MEDHI=2,
GE_RXPRIO_MEDLO=1,
GE_RXPRIO_LO=0
};
struct GTeth_softc {
struct GTeth_desc txq_desc[TX_RING_SIZE]; /* transmit descriptor memory */
struct GTeth_desc rxq_desc[RX_RING_SIZE]; /* receive descriptor memory */
struct mbuf* txq_mbuf[TX_RING_SIZE]; /* transmit buffer memory */
struct mbuf* rxq_mbuf[RX_RING_SIZE]; /* receive buffer memory */
struct GTeth_softc *next_module;
volatile unsigned int intr_errsts[INTR_ERR_SIZE]; /* capture the right intr_status */
unsigned int intr_err_ptr1; /* ptr used in GTeth_error() */
unsigned int intr_err_ptr2; /* ptr used in ISR */
struct ifqueue txq_pendq; /* these are ready to go to the GT */
unsigned int txq_pending;
unsigned int txq_lo; /* next to be given to GT DMA */
unsigned int txq_fi; /* next to be free */
unsigned int txq_to_cpu; /* next to be returned to CPU */
unsigned int txq_ei_gapcount; /* counter until next EI */
unsigned int txq_nactive; /* number of active descriptors */
unsigned int txq_nintr; /* number of txq desc. send TX_EVENT */
unsigned int txq_outptr; /* where to put next transmit packet */
unsigned int txq_inptr; /* start of 1st queued tx packet */
unsigned int txq_free; /* free Tx queue slots. */
unsigned txq_intrbits; /* bits to write to EIMR */
unsigned txq_esdcmrbits; /* bits to write to ESDCMR */
unsigned txq_epsrbits; /* bits to test with EPSR */
caddr_t txq_ectdp; /* offset to cur. tx desc ptr reg */
unsigned long txq_desc_busaddr; /* bus addr of tx descriptors */
caddr_t txq_buf_busaddr; /* bus addr of tx buffers */
struct mbuf *rxq_curpkt; /* mbuf for current packet */
struct GTeth_desc *rxq_head_desc; /* rxq head descriptor */
unsigned int rxq_fi; /* next to be returned to CPU */
unsigned int rxq_active; /* # of descriptors given to GT */
unsigned rxq_intrbits; /* bits to write to EIMR */
unsigned long rxq_desc_busaddr; /* bus addr of rx descriptors */
struct arpcom arpcom; /* rtems if structure, contains ifnet */
int sc_macno; /* which mac? 0, 1, or 2 */
unsigned int sc_tickflags;
#define GE_TICK_TX_IFSTART 0x0001
#define GE_TICK_RX_RESTART 0x0002
unsigned int sc_flags;
#define GE_ALLMULTI 0x0001
#define GE_PHYSTSCHG 0x0002
#define GE_RXACTIVE 0x0004
unsigned sc_pcr; /* current EPCR value */
unsigned sc_pcxr; /* current EPCXR value */
unsigned sc_intrmask; /* current EIMR value */
unsigned sc_idlemask; /* suspended EIMR bits */
unsigned sc_max_frame_length; /* maximum frame length */
unsigned rx_buf_sz;
/* Hash table related members */
unsigned long long *sc_hashtable;
unsigned int sc_hashmask; /* 0x1ff or 0x1fff */
rtems_id daemonTid;
rtems_id daemonSync; /* synchronization with the daemon */
/* statistics */
struct {
volatile unsigned long rxInterrupts;
volatile unsigned long txInterrupts;
unsigned long txMultiBuffPacket;
unsigned long txMultiMaxLen;
unsigned long txSinglMaxLen;
unsigned long txMultiMaxLoop;
unsigned long txBuffMaxLen;
unsigned long length_errors;
unsigned long frame_errors;
unsigned long crc_errors;
unsigned long or_errors; /* overrun error */
} stats;
};
