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freebsd/sys/dev/gx/if_gxreg.h

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/*-
* Copyright (c) 1999,2000,2001 Jonathan Lemon
* 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. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
/*
* Intel vendor ID
*/
#define INTEL_VENDORID 0x8086
/*
* Intel gigabit ethernet device ID
*/
#define DEVICEID_WISEMAN 0x1000
#define DEVICEID_LIVINGOOD_FIBER 0x1001
#define DEVICEID_LIVINGOOD_COPPER 0x1004
#define DEVICEID_CORDOVA_COPPER 0x1008
#define DEVICEID_CORDOVA_FIBER 0x1009
#define DEVICEID_CORDOVA2_COPPER 0x100D
/*
* chip register offsets. These are memory mapped registers
* which can be accessed with the CSR_READ_4()/CSR_WRITE_4() macros.
* Each register must be accessed using 32 bit operations.
*/
#define GX_CTRL 0x0000 /* control register */
#define GX_STATUS 0x0008 /* status register */
#define GX_EEPROM_CTRL 0x0010 /* EEPROM/Flash control/data */
#define GX_CTRL_EXT 0x0018 /* extended device control */
#define GX_MDIC 0x0020 /* MDI control */
#define GX_FLOW_CTRL_BASE 0x0028 /* flow control address low/high */
#define GX_FLOW_CTRL_TYPE 0x0030 /* flow control type */
#define GX_VET 0x0038 /* VLAN ethertype */
#define GX_RX_ADDR_BASE 0x0040 /* 16 pairs of receive address low/high */
#define GX_INT_READ 0x00C0 /* read interrupts */
#define GX_INT_FORCE 0x00C8 /* force an interrupt */
#define GX_INT_MASK_SET 0x00D0 /* interrupt mask set/read */
#define GX_INT_MASK_CLR 0x00D8 /* interrupt mask clear */
#define GX_RX_CONTROL 0x0100 /* RX control */
/* 82542 and older 82543 chips */
#define GX_RX_OLD_INTR_DELAY 0x0108 /* RX delay timer */
#define GX_RX_OLD_RING_BASE 0x0110 /* RX descriptor base address */
#define GX_RX_OLD_RING_LEN 0x0118 /* RX descriptor length */
#define GX_RX_OLD_RING_HEAD 0x0120 /* RX descriptor head */
#define GX_RX_OLD_RING_TAIL 0x0128 /* RX descriptor tail */
/* 82542 and older 82543 chips */
#define GX_OLD_FCRTH 0x0160 /* flow control rcv threshhold high */
#define GX_OLD_FCRTL 0x0168 /* flow control rcv threshhold low */
#define GX_FCTTV 0x0170 /* flow control xmit timer value */
#define GX_TX_CONFIG 0x0178 /* xmit configuration (tbi mode) */
#define GX_RX_CONFIG 0x0180 /* recv configuration word */
#define GX_MULTICAST_BASE 0x0200 /* multicast table array base */
#define GX_TX_CONTROL 0x0400 /* TX control */
#define GX_TX_IPG 0x0410 /* TX interpacket gap */
/* 82542 and older 82543 chips */
#define GX_TX_OLD_RING_BASE 0x0420 /* TX descriptor base address */
#define GX_TX_OLD_RING_LEN 0x0428 /* TX descriptor length */
#define GX_TX_OLD_RING_HEAD 0x0430 /* TX descriptor head */
#define GX_TX_OLD_RING_TAIL 0x0438 /* TX descriptor tail */
#define GX_TX_OLD_INTR_DELAY 0x0440 /* TX interrupt delay value */
#define GX_TBT 0x0448 /* TX burst timer */
#define GX_AIT 0x0458 /* adaptive IFS throttle */
#define GX_VFTA_BASE 0x0600 /* VLAN filter table array base */
#define GX_PKT_BUFFER_ALLOC 0x1000 /* Packet buffer allocation */
#define GX_ERT 0x2000 /* Early receive threshold */
#define GX_RX_OLD_DMA_CTRL 0x2028 /* RX descriptor control */
/* newer 82543 chips */
#define GX_FCRTH 0x2160 /* flow control rcv threshhold high */
#define GX_FCRTL 0x2168 /* flow control rcv threshhold low */
/* newer 82543 chips */
#define GX_RX_RING_BASE 0x2800 /* RX descriptor base address */
#define GX_RX_RING_LEN 0x2808 /* RX descriptor length */
#define GX_RX_RING_HEAD 0x2810 /* RX descriptor head */
#define GX_RX_RING_TAIL 0x2818 /* RX descriptor tail */
#define GX_RX_INTR_DELAY 0x2820 /* RX delay timer */
#define GX_RX_DMA_CTRL 0x2820 /* RX descriptor control */
#define GX_EARLY_TX_THRESH 0x3000 /* early transmit threshold */
#define GX_TX_OLD_DMA_CTRL 0x3028 /* TX descriptor control */
/* newer 82543 chips */
#define GX_TX_RING_BASE 0x3800 /* TX descriptor base address */
#define GX_TX_RING_LEN 0x3808 /* TX descriptor length */
#define GX_TX_RING_HEAD 0x3810 /* TX descriptor head */
#define GX_TX_RING_TAIL 0x3818 /* TX descriptor tail */
#define GX_TX_INTR_DELAY 0x3820 /* TX interrupt delay value */
#define GX_TX_DMA_CTRL 0x3828 /* TX descriptor control */
#define GX_CRCERRS 0x4000 /* CRC error count */
#define GX_ALGNERRC 0x4004 /* alignment error count */
#define GX_SYMERRS 0x4008 /* symbol error count */
#define GX_RXERRC 0x400C /* RX error count */
#define GX_MPC 0x4010 /* missed packets count */
#define GX_SCC 0x4014 /* single collision count */
#define GX_ECOL 0x4018 /* excessive collision count */
#define GX_MCC 0x401C /* multiple collision count */
#define GX_LATECOL 0x4020 /* late collision count */
#define GX_COLC 0x4020 /* collision count */
#define GX_TUC 0x402C /* transmit underrun count */
#define GX_DC 0x4030 /* defer count */
#define GX_TNCRS 0x4034 /* transmit - no CRS */
#define GX_SEC 0x4038 /* sequence error count */
#define GX_CEXTERR 0x403C /* carrier extension error count */
#define GX_RLEC 0x4040 /* receive length error count */
#define GX_RDMAUC 0x4044 /* receive DMA underrun count */
#define GX_XONRXC 0x4048 /* XON received count */
#define GX_XONTXC 0x404C /* XON transmitted count */
#define GX_XOFFRXC 0x4050 /* XOFF received count */
#define GX_XOFFTXC 0x4054 /* XOFF transmitted count */
#define GX_FCRUC 0x4058 /* FC received unsupported count */
#define GX_PRC64 0x405C /* packets rcvd (64 bytes) */
#define GX_PRC127 0x4060 /* packets rcvd (65 - 127 bytes) */
#define GX_PRC255 0x4064 /* packets rcvd (128 - 255 bytes) */
#define GX_PRC511 0x4068 /* packets rcvd (256 - 511 bytes) */
#define GX_PRC1023 0x406C /* packets rcvd (512 - 1023 bytes) */
#define GX_PRC1522 0x4070 /* packets rcvd (1023 - 1522 bytes) */
#define GX_GPRC 0x4074 /* good packets received */
#define GX_BPRC 0x4078 /* broadcast packets received */
#define GX_MPRC 0x407C /* multicast packets received */
#define GX_GPTC 0x4080 /* good packets transmitted */
#define GX_GORC 0x4088 /* good octets received (low/high) */
#define GX_GOTC 0x4090 /* good octets transmitted (low/high) */
#define GX_RNBC 0x40A0 /* receive no buffers count */
#define GX_RUC 0x40A4 /* receive undersize count */
#define GX_RFC 0x40A8 /* receive fragment count */
#define GX_ROC 0x40AC /* receive oversize count */
#define GX_RJC 0x40B0 /* receive jabber count */
#define GX_TOR 0x40C0 /* total octets received (low/high) */
#define GX_TOT 0x40C8 /* total octets transmitted (low/high) */
#define GX_TPR 0x40D0 /* total packets received */
#define GX_TPT 0x40D4 /* total packets transmitted */
#define GX_PTC64 0x40D8 /* packets transmitted (64 B) */
#define GX_PTC127 0x40DC /* packets xmitted (65 - 127 B) */
#define GX_PTC255 0x40E0 /* packets xmitted (128 - 255 B) */
#define GX_PTC511 0x40E4 /* packets xmitted (256 - 511 B) */
#define GX_PTC1023 0x40E8 /* packets xmitted (512 - 1023 B) */
#define GX_PTC1522 0x40EC /* packets xmitted (1023 - 1522 B) */
#define GX_MPTC 0x40F0 /* multicast packets transmitted */
#define GX_BPTC 0x40F4 /* broadcast packets transmitted */
#define GX_TSCTC 0x40F8 /* TCP segmentation context xmitted */
#define GX_TSCTFC 0x40FC /* TCP segmentation context fail */
#define GX_RX_CSUM_CONTROL 0x5000 /* receive checksum control */
#define GX_RDFH 0x8000 /* RX data fifo head */
#define GX_RDFT 0x8008 /* RX data fifo tail */
#define GX_TDFH 0x8010 /* TX data fifo head */
#define GX_TDFT 0x8018 /* TX data fifo tail */
#define GX_RBM_BASE 0x10000 /* packet buffer memory */
/* GX_RX_CSUM_CONTROL */
#define GX_CSUM_START_MASK 0x000ff
#define GX_CSUM_IP 0x00100
#define GX_CSUM_TCP 0x00200
/* GX_CTRL register */
#define GX_CTRL_DUPLEX 0x00000001 /* full duplex */
#define GX_CTRL_BIGENDIAN 0x00000002 /* 1 == big endian */
#define GX_CTRL_PCI_PRIORITY 0x00000004 /* 1 == fairness */
#define GX_CTRL_LINK_RESET 0x00000008
#define GX_CTRL_TEST_MODE 0x00000010
#define GX_CTRL_AUTOSPEED 0x00000020
#define GX_CTRL_SET_LINK_UP 0x00000040
#define GX_CTRL_INVERT_LOS 0x00000080 /* invert loss of signal */
#define GX_CTRL_SPEEDMASK 0x00000300 /* 2 bits */
#define GX_CTRL_FORCESPEED 0x00000800
#define GX_CTRL_FORCEDUPLEX 0x00001000
#define GX_CTRL_GPIO_0 0x00040000 /* Software defined pin #0 */
#define GX_CTRL_GPIO_1 0x00080000 /* Software defined pin #1 */
#define GX_CTRL_GPIO_2 0x00100000 /* Software defined pin #2 */
#define GX_CTRL_GPIO_3 0x00200000 /* Software defined pin #3 */
#define GX_CTRL_GPIO_DIR_0 0x00400000 /* Pin is Input(0)/Output(1) */
#define GX_CTRL_GPIO_DIR_1 0x00800000 /* Pin is Input(0)/Output(1) */
#define GX_CTRL_GPIO_DIR_2 0x01000000 /* Pin is Input(0)/Output(1) */
#define GX_CTRL_GPIO_DIR_3 0x02000000 /* Pin is Input(0)/Output(1) */
#define GX_CTRL_DEVICE_RESET 0x04000000
#define GX_CTRL_RX_FLOWCTRL 0x08000000 /* RX flowcontrol enable */
#define GX_CTRL_TX_FLOWCTRL 0x10000000 /* TX flowcontrol enable */
#define GX_CTRL_VLAN_ENABLE 0x40000000
/* GX_STATUS register */
#define GX_STAT_DUPLEX 0x00000001
#define GX_STAT_LINKUP 0x00000002
#define GX_STAT_XMITCLK_OK 0x00000004
#define GX_STAT_RECVCLK_OK 0x00000008
#define GX_STAT_XMIT_OFF 0x00000010
#define GX_STAT_TBIMODE 0x00000020
#define GX_STAT_SPEED_MASK 0x000000C0 /* 2 bits, not valid w/TBI */
#define GX_STAT_AUTOSPEED_MASK 0x00000300 /* 2 bits, not valid w/TBI */
#define GX_STAT_MTXCLK_OK 0x00000400
#define GX_STAT_PCI66 0x00000800
#define GX_STAT_BUS64 0x00001000
#define GX_SPEED_10MB 0x00000000
#define GX_SPEED_100MB 0x00000040
#define GX_SPEED_1000MB 0x00000080
/* GX_EEPROM_CTRL register */
#define GX_EE_CLOCK 0x0001 /* software clock */
#define GX_EE_SELECT 0x0002 /* chip select */
#define GX_EE_DATA_IN 0x0004
#define GX_EE_DATA_OUT 0x0008
#define GX_EE_FLASH_CTRL 0x0030 /* 0x02 == enable writes */
/* serial EEPROM opcodes */
#define GX_EE_OPC_WRITE 0x5
#define GX_EE_OPC_READ 0x6
#define GX_EE_OPC_ERASE 0x7
#define GX_EE_OPC_SIZE 3 /* bits of opcode */
#define GX_EE_ADDR_SIZE 6 /* bits of address */
/* EEPROM map offsets */
#define GX_EEMAP_MAC 0x00 /* station address (6 bytes) */
#define GX_EEMAP_INIT1 0x0A /* init control (2 bytes) */
/* GX_CTRL_EXT register */
#define GX_CTRLX_GPIO_4 0x00000010 /* Software defined pin #4 */
#define GX_CTRLX_GPIO_5 0x00000020 /* Software defined pin #5 */
#define GX_CTRLX_GPIO_6 0x00000040 /* Software defined pin #6 */
#define GX_CTRLX_GPIO_7 0x00000080 /* Software defined pin #7 */
#define GX_CTRLX_GPIO_DIR_4 0x00000100 /* Pin is Input(0)/Output(1) */
#define GX_CTRLX_GPIO_DIR_5 0x00000200 /* Pin is Input(0)/Output(1) */
#define GX_CTRLX_GPIO_DIR_6 0x00000400 /* Pin is Input(0)/Output(1) */
#define GX_CTRLX_GPIO_DIR_7 0x00000800 /* Pin is Input(0)/Output(1) */
#define GX_CTRLX_EEPROM_RESET 0x00002000 /* PCI_RST type EEPROM reset */
#define GX_CTRLX_SPEED_BYPASS 0x00008000 /* use CTRL.SPEED setting */
/*
* Defines for MII/GMII PHY.
*
* GPIO bits 0-3 are controlled by GX_CTRL, 4-7 by GX_CTRL_EXT.
*/
#define GX_CTRL_GPIO_DIR (GX_CTRL_GPIO_DIR_3)
#define GX_CTRL_GPIO_DIR_MASK (GX_CTRL_GPIO_DIR_0 | GX_CTRL_GPIO_DIR_1 | \
GX_CTRL_GPIO_DIR_2 | GX_CTRL_GPIO_DIR_3)
#define GX_CTRL_PHY_IO GX_CTRL_GPIO_2
#define GX_CTRL_PHY_IO_DIR GX_CTRL_GPIO_DIR_2
#define GX_CTRL_PHY_CLK GX_CTRL_GPIO_3
#define GX_CTRLX_GPIO_DIR (GX_CTRLX_GPIO_DIR_4)
#define GX_CTRLX_GPIO_DIR_MASK (GX_CTRLX_GPIO_DIR_4 | GX_CTRLX_GPIO_DIR_5 | \
GX_CTRLX_GPIO_DIR_6 | GX_CTRLX_GPIO_DIR_7)
#define GX_CTRLX_PHY_RESET GX_CTRLX_GPIO_4
#define GX_PHY_PREAMBLE 0xffffffff
#define GX_PHY_PREAMBLE_LEN 32
#define GX_PHY_SOF 0x01
#define GX_PHY_TURNAROUND 0x02
#define GX_PHY_OP_WRITE 0x01
#define GX_PHY_OP_READ 0x02
#define GX_PHY_READ_LEN 14
#define GX_PHY_WRITE_LEN 32
/* GX_RX_ADDR registers */
#define GX_RA_VALID 0x80000000
/* GX_TX_CONFIG register */
#define GX_TXCFG_AUTONEG 0x80000000
#define GX_TXCFG_SWCONFIG 0x80000000
/* GX_RX_CONFIG register */
#define GX_RXCFG_INVALID 0x08000000
/* GX_RX_CONTROL register */
#define GX_RXC_RESET 0x00000001
#define GX_RXC_ENABLE 0x00000002
#define GX_RXC_STORE_BAD_PKT 0x00000004
#define GX_RXC_UNI_PROMISC 0x00000008
#define GX_RXC_MULTI_PROMISC 0x00000010
#define GX_RXC_LONG_PKT_ENABLE 0x00000020
#define GX_RXC_LOOPBACK 0x000000C0
#define GX_RXC_RX_THOLD_MASK 0x00000300
#define GX_RXC_MCAST_OFF_MASK 0x00003000
#define GX_RXC_BCAST_ACCEPT 0x00008000
#define GX_RXC_RX_BSIZE_MASK 0x00030000
#define GX_RXC_VLAN_ENABLE 0x00040000
#define GX_RXC_CFI_ENABLE 0x00080000 /* canonical form enable */
#define GX_RXC_CFI 0x00100000
#define GX_RXC_DISCARD_PAUSE 0x00400000
#define GX_RXC_PASS_MAC 0x00800000
#define GX_RXC_RX_BSIZE_SCALE 0x02000000 /* multiply BSIZE by 16 */
#define GX_RXC_STRIP_ETHERCRC 0x04000000
/* bits for GX_RXC_RX_THOLD */
#define GX_RXC_RX_THOLD_HALF 0x00000000
#define GX_RXC_RX_THOLD_QUARTER 0x00000100
#define GX_RXC_RX_THOLD_EIGHTH 0x00000200
/* bits for GX_RXC_RX_BSIZE_MASK */
#define GX_RXC_RX_BSIZE_2K 0x00000000
#define GX_RXC_RX_BSIZE_1K 0x00010000
#define GX_RXC_RX_BSIZE_512 0x00020000
#define GX_RXC_RX_BSIZE_256 0x00030000
/* GX_TX_CONTROL register */
#define GX_TXC_RESET 0x00000001
#define GX_TXC_ENABLE 0x00000002
#define GX_TXC_PAD_SHORT_PKTS 0x00000008
#define GX_TXC_COLL_RETRY_MASK 0x00000FF0
#define GX_TXC_COLL_TIME_MASK 0x003FF000
#define GX_TXC_XMIT_XOFF 0x00400000
#define GX_TXC_PKT_BURST_ENABLE 0x00800000
#define GX_TXC_REXMT_LATE_COLL 0x01000000
#define GX_TXC_NO_REXMT_UNDERRN 0x02000000
/* bits for GX_TXC_COLL_RETRY_MASK */
#define GX_TXC_COLL_RETRY_16 0x000000F0 /* 16 attempts at retransmit */
/* bits for GX_TXC_COLL_TIME_MASK */
#define GX_TXC_COLL_TIME_HDX 0x00200000
#define GX_TXC_COLL_TIME_FDX 0x00040000
/* GX_INT bits */
#define GX_INT_XMIT_DONE 0x00000001
#define GX_INT_XMIT_EMPTY 0x00000002
#define GX_INT_LINK_CHANGE 0x00000004
#define GX_INT_RCV_SEQ_ERR 0x00000008
#define GX_INT_RCV_THOLD 0x00000010
#define GX_INT_RCV_OVERRUN 0x00000040
#define GX_INT_RCV_TIMER 0x00000080
#define GX_INT_MDIO_DONE 0x00000200
#define GX_INT_C_SETS 0x00000400
#define GX_INT_GPI_MASK 0x00007800
#define GX_INT_ALL \
(GX_INT_XMIT_DONE | GX_INT_XMIT_EMPTY | GX_INT_LINK_CHANGE | \
GX_INT_RCV_SEQ_ERR | GX_INT_RCV_THOLD | GX_INT_RCV_OVERRUN | \
GX_INT_RCV_TIMER | GX_INT_MDIO_DONE | GX_INT_C_SETS | GX_INT_GPI_MASK)
#if 0
#define GX_INT_WANTED \
(GX_INT_XMIT_DONE | /*GX_INT_XMIT_EMPTY |*/ GX_INT_LINK_CHANGE | \
GX_INT_RCV_SEQ_ERR | GX_INT_RCV_THOLD | GX_INT_RCV_OVERRUN | \
GX_INT_RCV_TIMER | GX_INT_C_SETS)
#else
#define GX_INT_WANTED \
(GX_INT_XMIT_DONE | GX_INT_RCV_THOLD | GX_INT_RCV_TIMER | \
GX_INT_LINK_CHANGE)
#endif
/* PCI space */
#define GX_PCI_VENDOR_ID 0x0000
#define GX_PCI_DEVICE_ID 0x0002
#define GX_PCI_COMMAND 0x0004
#define GX_PCI_STATUS 0x0006
#define GX_PCI_REVID 0x0008
#define GX_PCI_CLASSCODE 0x0009
#define GX_PCI_CACHELEN 0x000C
#define GX_PCI_LATENCY_TIMER 0x000D
#define GX_PCI_HEADER_TYPE 0x000E
#define GX_PCI_LOMEM 0x0010
#define GX_PCI_SUBVEN_ID 0x002C
#define GX_PCI_SYBSYS_ID 0x002E
#define GX_PCI_BIOSROM 0x0030
#define GX_PCI_CAPABILITY_PTR 0x0034
#define GX_PCI_INTLINE 0x003C
#define GX_PCI_INTPIN 0x003D
#define GX_PCI_MINGNT 0x003E
#define GX_PCI_MINLAT 0x003F
/* generic TX descriptor */
struct gx_tx_desc {
u_int64_t :64;
u_int16_t :16;
u_int8_t :4,
tx_type:4,
u_int8_t :5,
tx_extended:1,
:2;
u_int32_t :32;
};
/* legacy TX descriptor */
struct gx_tx_desc_old {
u_int64_t tx_addr;
u_int16_t tx_len;
u_int8_t tx_csum_offset;
u_int8_t tx_command;
u_int8_t tx_status;
u_int8_t tx_csum_start;
u_int16_t tx_vlan;
};
#define GX_TXOLD_END_OF_PKT 0x01 /* end of packet */
#define GX_TXOLD_ETHER_CRC 0x02 /* insert ethernet CRC */
#define GX_TXOLD_INSERT_CSUM 0x04 /* insert checksum */
#define GX_TXOLD_REPORT_STATUS 0x08 /* report packet status */
#define GX_TXOLD_REPORT_SENT 0x10 /* report packet sent */
#define GX_TXOLD_EXTENSION 0x20 /* extended format */
#define GX_TXOLD_VLAN_ENABLE 0x40 /* use vlan */
#define GX_TXOLD_INT_DELAY 0x80 /* delay interrupt */
/* bits for tx_status */
#define GX_TXSTAT_DONE 0x01 /* descriptor done */
#define GX_TXSTAT_EXCESS_COLL 0x02 /* excess collisions */
#define GX_TXSTAT_LATE_COLL 0x04 /* late collision */
#define GX_TXSTAT_UNDERRUN 0x08 /* transmit underrun */
/* TX descriptor for checksum offloading context */
struct gx_tx_desc_ctx {
u_int8_t tx_ip_csum_start;
u_int8_t tx_ip_csum_offset;
u_int16_t tx_ip_csum_end;
u_int8_t tx_tcp_csum_start;
u_int8_t tx_tcp_csum_offset;
u_int16_t tx_tcp_csum_end;
u_int32_t tx_len:20,
tx_type:4,
tx_command:8;
u_int8_t tx_status;
u_int8_t tx_hdrlen;
u_int16_t tx_mss;
};
#define GX_TXCTX_TCP_PKT 0x01 /* its a TCP packet */
#define GX_TXCTX_IP_PKT 0x02 /* its an IP packet */
#define GX_TXCTX_TCP_SEG_EN 0x04 /* TCP segmentation enable */
#define GX_TXCTX_REPORT_STATUS 0x08 /* report packet status */
#define GX_TXCTX_EXTENSION 0x20 /* extended format */
#define GX_TXCTX_INT_DELAY 0x80 /* delay interrupt */
/* TX descriptor for data */
struct gx_tx_desc_data {
u_int64_t tx_addr;
u_int32_t tx_len:20,
tx_type:4,
tx_command:8;
u_int8_t tx_status;
u_int8_t tx_options;
u_int16_t tx_vlan;
};
#define GX_TXTCP_END_OF_PKT 0x01 /* end of packet */
#define GX_TXTCP_ETHER_CRC 0x02 /* insert ethernet CRC */
#define GX_TXTCP_TCP_SEG_EN 0x04 /* TCP segmentation enable */
#define GX_TXTCP_REPORT_STATUS 0x08 /* report packet status */
#define GX_TXTCP_REPORT_SENT 0x10 /* report packet sent */
#define GX_TXTCP_EXTENSION 0x20 /* extended format */
#define GX_TXTCP_VLAN_ENABLE 0x40 /* use vlan */
#define GX_TXTCP_INT_DELAY 0x80 /* delay interrupt */
/* bits for tx_options */
#define GX_TXTCP_OPT_IP_CSUM 0x01 /* insert IP checksum */
#define GX_TXTCP_OPT_TCP_CSUM 0x02 /* insert UDP/TCP checksum */
/* RX descriptor data structure */
struct gx_rx_desc {
u_int64_t rx_addr;
u_int16_t rx_len;
u_int16_t rx_csum;
u_int16_t rx_staterr; /* status + error fields */
u_int16_t rx_special;
};
/* bits for rx_status portion of rx_staterr */
#define GX_RXSTAT_COMPLETED 0x01 /* completed */
#define GX_RXSTAT_END_OF_PACKET 0x02 /* end of this packet */
#define GX_RXSTAT_IGNORE_CSUM 0x04 /* ignore computed checksum */
#define GX_RXSTAT_VLAN_PKT 0x08 /* matched vlan */
#define GX_RXSTAT_HAS_TCP_CSUM 0x20 /* TCP checksum calculated */
#define GX_RXSTAT_HAS_IP_CSUM 0x40 /* IP checksum calculated */
#define GX_RXSTAT_INEXACT_MATCH 0x80 /* must check address */
/* bits for rx_error portion of rx_staterr */
#define GX_RXERR_CRC 0x0100 /* CRC or alignment error */
#define GX_RXERR_SYMBOL 0x0200 /* symbol error */
#define GX_RXERR_SEQUENCE 0x0400 /* sequence error */
#define GX_RXERR_CARRIER 0x1000 /* carrier extension error */
#define GX_RXERR_TCP_CSUM 0x2000 /* TCP/UDP checksum error */
#define GX_RXERR_IP_CSUM 0x4000 /* IP checksum error */
#define GX_RXERR_RX_DATA 0x8000 /* RX data error */
/* drop packet on these errors */
#define GX_INPUT_ERROR \
(GX_RXERR_CRC | GX_RXERR_SYMBOL | GX_RXERR_SEQUENCE | \
GX_RXERR_CARRIER | GX_RXERR_RX_DATA)
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