ksz8851snl.c File Reference

Driver for Micrel KSZ8851SNL Ethernet controller.



Copyright 2015 Silicon Labs, Inc. http://www.silabs.com

This file is licensed under the Silabs License Agreement. See the file "Silabs_License_Agreement.txt" for details. Before using this software for any purpose, you must agree to the terms of that agreement.

Definition in file ksz8851snl.c .

#include <stdio.h>
#include " ksz8851snl.h "
#include " ksz8851snl_spi.h "
#include " em_assert.h "
#include "lwip/sys.h"
#include "lwipopts.h"
#include "debug.h"


#define AUTO_NEG 0x1000
#define BYTE_MASK 0x00FF
#define BYTE_SIZE 0x0008
#define CHIP_ID_MASK 0xFFF0
#define CIDER 0xC0
#define CLEAR_INT 0xFFFF
#define DIGITAL_LOOPBACK 0x4000
#define EXTRA_SIZE 0x0008
#define FCHWR 0xB2
#define FCLWR 0xB0
#define FD_PTR_AUTO_INC 0x4000
#define FORCE_100 0x2000
#define FORCE_FULL_DUPLEX 0x0100
#define FRAME_ID_MASK 0x003F
#define GLOBAL_SOFT_RESET 0x0001
#define GRR 0x26
#define HIGH_QMU_MAC_H 0x00
#define HIGH_QMU_MAC_L 0x0B
#define IACR 0xC8
#define IADHR 0xD2
#define IADLR 0xD0
#define IER 0x90
#define ISR 0x92
#define KSZ8851SNL_CHIP_ID 0x8870
#define LSB_MASK 0x00FF
#define MARH 0x14
#define MARL 0x10
#define MARM 0x12
#define MIB_MASK 0x1C00
#define MIB_Rx1024to1521Octets 0x13
#define MIB_Rx128to255Octets 0x10
#define MIB_Rx1522to2000Octets 0x14
#define MIB_Rx256to511Octets 0x11
#define MIB_Rx512to1023Octets 0x12
#define MIB_Rx64Octets 0x0E
#define MIB_Rx65to127Octets 0x0F
#define MIB_RxAlignmentError 0x08
#define MIB_RxBroadcast 0x0B
#define MIB_RxByte 0x00
#define MIB_RxControl8808Pkts 0x09
#define MIB_RxCRCError 0x07
#define MIB_RxFragments 0x03
#define MIB_RxJabbers 0x05
#define MIB_RxMulticast 0x0C
#define MIB_RxOversize 0x04
#define MIB_RxPausePkts 0x0A
#define MIB_RxSymbolError 0x06
#define MIB_RxUndersizePkt 0x02
#define MIB_RxUnicast 0x0D
#define MIB_TxBroadcastPkts 0x18
#define MIB_TxByte 0x15
#define MIB_TxDeferred 0x1B
#define MIB_TxExcessiveCollision 0x1D
#define MIB_TxLateCollision 0x16
#define MIB_TxMulticastPkts 0x19
#define MIB_TxMultipleCollision 0x1F
#define MIB_TxPausePkts 0x17
#define MIB_TxSingleCollision 0x1E
#define MIB_TxTotalCollision 0x1C
#define MIB_TxUnicastPkts 0x1A
#define MIB_XXX 0x01
#define MID_QMU_MAC_H 0x57
#define MSB_POS 0x0008
#define NO_INT 0x0000
#define OBCR 0x20
#define ONE_FRAME_THRES 0x0001
#define P1CR 0xF6
#define P1MBCR 0xE4
#define P1SR 0xF8
#define PHY_RESET 0x0001
#define PHYRR 0xD8
#define PMECR 0xD4
#define PORT1_AN_DONE 0x0040
#define PORT1_AUTO_MDIX_DISABLE 0x0400
#define PORT1_AUTO_NEG_100BTX 0x0004
#define PORT1_AUTO_NEG_100BTX_FD 0x0008
#define PORT1_AUTO_NEG_10BT 0x0001
#define PORT1_AUTO_NEG_10BT_FD 0x0002
#define PORT1_AUTO_NEG_ENABLE 0x0080
#define PORT1_AUTO_NEG_FLOW_CTRL 0x0010
#define PORT1_AUTO_NEG_RESTART 0x2000
#define PORT1_CONFIG
#define PORT1_FORCE_100_MBIT 0x0040
#define PORT1_FORCE_FULL_DUPLEX 0x0020
#define PORT1_FORCE_MDIX 0x0200
#define PORT1_LED_OFF 0x8000
#define PORT1_LINK_GOOD 0x0020
#define PORT1_POWER_DOWN 0x0800
#define PORT1_TX_DISABLE 0x4000
#define QMU_MODULE_SOFT_RESET 0x0002
#define RESTART_AUTO_NEG 0x0200
#define RX_FLOW_CTRL_BAD_PACKET 0x0200
#define RX_FLOW_CTRL_BLOCK_MAC 0x0001
#define RX_FLOW_CTRL_BURST_LEN_16 0x0040
#define RX_FLOW_CTRL_BURST_LEN_32 0x0060
#define RX_FLOW_CTRL_BURST_LEN_4 0x0000
#define RX_FLOW_CTRL_BURST_LEN_8 0x0020
#define RX_FLOW_CTRL_MAC_FILTER 0x0800
#define RX_FLOW_CTRL_RX_ALL 0x0010
#define RX_FLOW_CTRL_RX_ENABLE 0x0001
#define RXCR1 0x74
#define RXCR2 0x76
#define RXFCTR 0x9C
#define RXFDPR 0x86
#define RXFHBCR 0x7E
#define RXFHSR 0x7C
#define RXQ_AUTO_DEQUEUE 0x0010
#define RXQ_EN_ON_BYTE_CNT_INT 0x0040
#define RXQ_EN_ON_FRAME_CNT_INT 0x0020
#define RXQ_EN_ON_TIME_INT 0x0080
#define RXQ_ON_BYTE_CNT_INT 0x0800
#define RXQ_ON_FRAME_CNT_INT 0x0400
#define RXQ_ON_TIME_INT 0x1000
#define RXQ_START_DMA 0x0008
#define RXQ_TWOBYTE_OFFSET 0x0200
#define RXQCR 0x82
#define TX_FLOW_CTRL_CRC_ENABLE 0x0002
#define TX_FLOW_CTRL_ENABLE 0x0001
#define TX_FLOW_CTRL_PAD_ENABLE 0x0004
#define TX_INT_on_COMPLETION 0x8000
#define TX_MEMORY_WAIT_MS 500
#define TXCR 0x70
#define TXFDPR 0x84
#define TXMIR 0x78
#define TXNTFSR 0x9E
#define TXQ_AUTO_ENQUEUE 0x0004
#define TXQ_ENQUEUE 0x0001
#define TXQ_MEM_AVAILABLE_INT 0x0002
#define TXQCR 0x80
#define VALID_FRAME_MASK 0x8000
#define WATERMARK_4KB 0x0400
#define WATERMARK_6KB 0x0600
#define WORD_SIZE 0x0004


void KSZ8851SNL_AllRegistersDump (void)
Prints the value of the registers of the ethernet controller.
void KSZ8851SNL_Enable (void)
Enable RX and TX.
uint16_t KSZ8851SNL_FrameCounterGet (void)
void KSZ8851SNL_FrameCounterSet (void)
void KSZ8851SNL_Init (void)
Initialize the registers of the ethernet controller.
void KSZ8851SNL_IntClear (uint16_t flags)
Clear interrupt flags.
void KSZ8851SNL_IntDisable (void)
disables the chip interrupts
void KSZ8851SNL_IntEnable (void)
enables the chip interrupts
uint16_t KSZ8851SNL_IntGet (void)
Get interrupt flags.
void KSZ8851SNL_MacAddressGet (uint8_t *macAddress)
Get the MAC address of the current board.
void KSZ8851SNL_MIBCountersDump (void)
Dumps the Management Information Base Counters.
void KSZ8851SNL_MIBCountersUpdate (void)
Update the Management Information Base Counters.
uint16_t KSZ8851SNL_PHYStatusGet (void)
Get the PHY status.
void KSZ8851SNL_PMECRStatusClear (uint16_t flags)
Clear PMECR (Power Management Event Control Register) flags.
uint16_t KSZ8851SNL_Receive (uint16_t length, uint8_t *buffer)
Performs the actual receive of a raw frame over the network.
void KSZ8851SNL_RegistersDump (void)
Prints the value of the registers of the ethernet controller.
uint16_t KSZ8851SNL_RXQCRGet (void)
Get RXQCR register.
void KSZ8851SNL_RxQueueReset (void)
Reset RxQueue.
void KSZ8851SNL_Transmit (uint16_t length, const uint8_t *buffer)
Transmit a chunk of data to the ethernet controller. The chunk can be either a full ethernet frame or a partial chunk of an ethernet frame.
bool KSZ8851SNL_TransmitBegin (uint16_t length)
Prepares for a transmission of an ethernet frame over the network.
void KSZ8851SNL_TransmitEnd (uint16_t length)
Ends a transmission of an ethernet frame to the ethernet controller.
void KSZ8851SNL_TxQueueReset (void)
Reset TxQueue.
static uint32_t MIBCountersRead (uint16_t offset)
helper function for KSZ8851SNL_UpdateMIBCounters
static void ReleaseIncosistentFrame (void)
Release the current frame if it is inconsistent.


static KSZ8851SLN_mib_t mibCounters
Copy of the current MIB counters values from the ksz8851snl. This is updated by calling KSZ8851SNL_MIBCountersUpdate .

Macro Definition Documentation

#define AUTO_NEG   0x1000

Force auto negotiation

Definition at line 287 of file ksz8851snl.c .


Determines if receive will block

Definition at line 85 of file ksz8851snl.c .

#define BYTE_MASK   0x00FF

Used to mask the LSB

Definition at line 92 of file ksz8851snl.c .

#define BYTE_SIZE   0x0008

Used to mark the MSB pos

Definition at line 93 of file ksz8851snl.c .


CRC OK for ICMP, IP, TCP, UDP MII error Frame too long error

Definition at line 69 of file ksz8851snl.c .

#define CHIP_ID_MASK   0xFFF0

Used to mask the revision ID

Definition at line 62 of file ksz8851snl.c .

#define CIDER   0xC0

Chip ID and Enable Register

Definition at line 51 of file ksz8851snl.c .

#define CLEAR_INT   0xFFFF

Used to clear INT_STATUS_REG

Definition at line 65 of file ksz8851snl.c .

#define DIGITAL_LOOPBACK   0x4000

Enable Digital loopback mode

Definition at line 283 of file ksz8851snl.c .

#define EXTRA_SIZE   0x0008

Needed for the frame header

Definition at line 84 of file ksz8851snl.c .

#define FCHWR   0xB2

Configure High Watermark to 4KByte

Definition at line 50 of file ksz8851snl.c .

#define FCLWR   0xB0

Configure Low Watermark to 6KByte

Definition at line 49 of file ksz8851snl.c .

#define FD_PTR_AUTO_INC   0x4000

Used to reset the FD pointer

Definition at line 64 of file ksz8851snl.c .

#define FORCE_100   0x2000

Force the speed to 100MBps

Definition at line 285 of file ksz8851snl.c .

#define FORCE_FULL_DUPLEX   0x0100

Force full duplex

Definition at line 291 of file ksz8851snl.c .


Receive Frame Count Threshold to use in RXFCTR

Definition at line 297 of file ksz8851snl.c .

#define FRAME_ID_MASK   0x003F

Used to mask the reserved bits

Definition at line 68 of file ksz8851snl.c .

#define GLOBAL_SOFT_RESET   0x0001

Global reset

Definition at line 276 of file ksz8851snl.c .

#define GRR   0x26

Global Reset Register

Definition at line 34 of file ksz8851snl.c .

#define HIGH_QMU_MAC_H   0x00

1st segment of the MAC address

Definition at line 89 of file ksz8851snl.c .

#define HIGH_QMU_MAC_L   0x0B

2nd segment of the MAC address

Definition at line 90 of file ksz8851snl.c .

#define IACR   0xC8

Indirect access control Register

Definition at line 52 of file ksz8851snl.c .

#define IADHR   0xD2

Indirect access data high Register

Definition at line 54 of file ksz8851snl.c .

#define IADLR   0xD0

Indirect access data low Register

Definition at line 53 of file ksz8851snl.c .

#define IER   0x90

Interrupt Enable Register

Definition at line 45 of file ksz8851snl.c .

#define ISR   0x92

Interrupt Status Register

Definition at line 46 of file ksz8851snl.c .

#define KSZ8851SNL_CHIP_ID   0x8870

Default Chip ID for KSZ8851SNL

Definition at line 61 of file ksz8851snl.c .

#define LSB_MASK   0x00FF

Used to mask the LSB

Definition at line 80 of file ksz8851snl.c .

#define MARH   0x14

MAC Address High

Definition at line 32 of file ksz8851snl.c .

#define MARL   0x10

MAC Address Low

Definition at line 30 of file ksz8851snl.c .

#define MARM   0x12

MAC Address Middle

Definition at line 31 of file ksz8851snl.c .

#define MIB_MASK   0x1C00

Management information base registers MIB Mask

Definition at line 300 of file ksz8851snl.c .

#define MIB_Rx1024to1521Octets   0x13

of received packets with size between 1024 and 1521 bytes

Definition at line 320 of file ksz8851snl.c .

#define MIB_Rx128to255Octets   0x10

of received packets with size between 128 and 255 bytes

Definition at line 317 of file ksz8851snl.c .

#define MIB_Rx1522to2000Octets   0x14

of received packets with size between 1522 and 2000 bytes

Definition at line 321 of file ksz8851snl.c .

#define MIB_Rx256to511Octets   0x11

of received packets with size between 256 and 511 bytes

Definition at line 318 of file ksz8851snl.c .

#define MIB_Rx512to1023Octets   0x12

of received packets with size between 512 and 1023 bytes

Definition at line 319 of file ksz8851snl.c .

#define MIB_Rx64Octets   0x0E

of received packets with size of 64 bytes

Definition at line 315 of file ksz8851snl.c .

#define MIB_Rx65to127Octets   0x0F

of received packets with size between 65 and 127 bytes

Definition at line 316 of file ksz8851snl.c .

#define MIB_RxAlignmentError   0x08

of received missaligned packets

Definition at line 309 of file ksz8851snl.c .

#define MIB_RxBroadcast   0x0B

of received broadcast packets

Definition at line 312 of file ksz8851snl.c .

#define MIB_RxByte   0x00

of received bytes

Definition at line 301 of file ksz8851snl.c .

#define MIB_RxControl8808Pkts   0x09

of received control packets

Definition at line 310 of file ksz8851snl.c .

#define MIB_RxCRCError   0x07

of received packets with CRC error

Definition at line 308 of file ksz8851snl.c .

#define MIB_RxFragments   0x03

of received fragments

Definition at line 304 of file ksz8851snl.c .

#define MIB_RxJabbers   0x05

of received jabbers

Definition at line 306 of file ksz8851snl.c .

#define MIB_RxMulticast   0x0C

of received multicast packets

Definition at line 313 of file ksz8851snl.c .

#define MIB_RxOversize   0x04

of received oversized packets

Definition at line 305 of file ksz8851snl.c .

#define MIB_RxPausePkts   0x0A

of received pause packets

Definition at line 311 of file ksz8851snl.c .

#define MIB_RxSymbolError   0x06

of received error symbols

Definition at line 307 of file ksz8851snl.c .

#define MIB_RxUndersizePkt   0x02

of received undersized packets

Definition at line 303 of file ksz8851snl.c .

#define MIB_RxUnicast   0x0D

of received unicast packets

Definition at line 314 of file ksz8851snl.c .

#define MIB_TxBroadcastPkts   0x18

of transmitted broadcast packets

Definition at line 325 of file ksz8851snl.c .

#define MIB_TxByte   0x15

of transmitted bytes

Definition at line 322 of file ksz8851snl.c .

#define MIB_TxDeferred   0x1B

of transmitted deferred packets

Definition at line 328 of file ksz8851snl.c .

#define MIB_TxExcessiveCollision   0x1D

of transmitted excessive collisions

Definition at line 330 of file ksz8851snl.c .

#define MIB_TxLateCollision   0x16

of transmitted late collision packets

Definition at line 323 of file ksz8851snl.c .

#define MIB_TxMulticastPkts   0x19

of transmitted multicast packets

Definition at line 326 of file ksz8851snl.c .

#define MIB_TxMultipleCollision   0x1F

of transmitted multiple collisions

Definition at line 332 of file ksz8851snl.c .

#define MIB_TxPausePkts   0x17

of transmitted pause packets

Definition at line 324 of file ksz8851snl.c .

#define MIB_TxSingleCollision   0x1E

of transmitted single collisions

Definition at line 331 of file ksz8851snl.c .

#define MIB_TxTotalCollision   0x1C

of transmitted total collisions

Definition at line 329 of file ksz8851snl.c .

#define MIB_TxUnicastPkts   0x1A

of transmitted unicast packets

Definition at line 327 of file ksz8851snl.c .

#define MIB_XXX   0x01

MIB Reserved byte

Definition at line 302 of file ksz8851snl.c .

#define MID_QMU_MAC_H   0x57

3rd segment of the MAC address

Definition at line 91 of file ksz8851snl.c .

#define MSB_POS   0x0008

Used to mark the MSB pos

Definition at line 81 of file ksz8851snl.c .

#define NO_INT   0x0000

Used to disable the interupts

Definition at line 66 of file ksz8851snl.c .

#define OBCR   0x20

On-Chip Bus Control Register

Definition at line 33 of file ksz8851snl.c .

#define ONE_FRAME_THRES   0x0001

RX INT after one frame

Definition at line 63 of file ksz8851snl.c .

#define P1CR   0xF6

Port 1 Control Register

Definition at line 58 of file ksz8851snl.c .

#define P1MBCR   0xE4

PHY1 MII-Register Basic Control Register

Definition at line 57 of file ksz8851snl.c .

#define P1SR   0xF8

Port 1 Status Register

Definition at line 59 of file ksz8851snl.c .

#define PHY_RESET   0x0001

PHY Reset Register Options

Definition at line 279 of file ksz8851snl.c .

#define PHYRR   0xD8

PHY Reset Register

Definition at line 56 of file ksz8851snl.c .

#define PMECR   0xD4

Power Managment Event Control Register

Definition at line 55 of file ksz8851snl.c .

#define PORT1_AN_DONE   0x0040

Auto-neg done

Definition at line 228 of file ksz8851snl.c .

#define PORT1_AUTO_MDIX_DISABLE   0x0400

Disable auto MDI/MDI-X

Definition at line 242 of file ksz8851snl.c .

#define PORT1_AUTO_NEG_100BTX   0x0004

Advertise 100BT half-duplex capability

Definition at line 256 of file ksz8851snl.c .

#define PORT1_AUTO_NEG_100BTX_FD   0x0008

Advertise 100BT full-duplex capability

Definition at line 254 of file ksz8851snl.c .

#define PORT1_AUTO_NEG_10BT   0x0001

Advertise 10BT half-duplex capability

Definition at line 260 of file ksz8851snl.c .

#define PORT1_AUTO_NEG_10BT_FD   0x0002

Advertise 10BT full-duplex capability

Definition at line 258 of file ksz8851snl.c .

#define PORT1_AUTO_NEG_ENABLE   0x0080

Enable auto-negotiation

Definition at line 246 of file ksz8851snl.c .

#define PORT1_AUTO_NEG_FLOW_CTRL   0x0010

Advertise flow control capability

Definition at line 252 of file ksz8851snl.c .

#define PORT1_AUTO_NEG_RESTART   0x2000

Restart auto-negotiation

Definition at line 238 of file ksz8851snl.c .

#define PORT1_CONFIG
#define PORT1_AUTO_NEG_10BT
Definition: ksz8851snl.c:260
#define PORT1_AUTO_NEG_10BT_FD
Definition: ksz8851snl.c:258
#define PORT1_AUTO_NEG_100BTX
Definition: ksz8851snl.c:256
#define PORT1_FORCE_100_MBIT
Definition: ksz8851snl.c:248
Definition: ksz8851snl.c:250
#define PORT1_AUTO_NEG_100BTX_FD
Definition: ksz8851snl.c:254
Definition: ksz8851snl.c:246
Definition: ksz8851snl.c:252

PHY Port default config P1CR

Definition at line 263 of file ksz8851snl.c .

#define PORT1_FORCE_100_MBIT   0x0040

Force PHY 100Mbps

Definition at line 248 of file ksz8851snl.c .

#define PORT1_FORCE_FULL_DUPLEX   0x0020

Force PHY in full duplex mode

Definition at line 250 of file ksz8851snl.c .

#define PORT1_FORCE_MDIX   0x0200

Force MDI-X

Definition at line 244 of file ksz8851snl.c .

#define PORT1_LED_OFF   0x8000

Turn off port LEDs

Definition at line 234 of file ksz8851snl.c .

#define PORT1_LINK_GOOD   0x0020

Link good

Definition at line 230 of file ksz8851snl.c .

#define PORT1_POWER_DOWN   0x0800

Set port power-down

Definition at line 240 of file ksz8851snl.c .

#define PORT1_TX_DISABLE   0x4000

Disable port transmit

Definition at line 236 of file ksz8851snl.c .

#define QMU_MODULE_SOFT_RESET   0x0002

QMU Reset

Definition at line 274 of file ksz8851snl.c .

#define RESTART_AUTO_NEG   0x0200

Restart auto negotiation

Definition at line 289 of file ksz8851snl.c .

#define RX_BYTE_CNT_MASK   0x0FFF

Used to mask the reserved bits

Definition at line 79 of file ksz8851snl.c .

Definition: ksz8851snl.c:138
Definition: ksz8851snl.c:140
Definition: ksz8851snl.c:136
Definition: ksz8851snl.c:150
Definition: ksz8851snl.c:134
Definition: ksz8851snl.c:142
Definition: ksz8851snl.c:146

RX FLOW CONTROL1 Initialization collection

Definition at line 161 of file ksz8851snl.c .

Definition: ksz8851snl.c:182
Definition: ksz8851snl.c:190
Definition: ksz8851snl.c:188
Definition: ksz8851snl.c:184

RX FLOW CONTROL2 Initialization collection

Definition at line 195 of file ksz8851snl.c .

#define RX_FLOW_CTRL_BAD_PACKET   0x0200

Enable Receive Error Frames

Definition at line 144 of file ksz8851snl.c .

#define RX_FLOW_CTRL_BLOCK_MAC   0x0001

Receive Source Address Filtering

Definition at line 192 of file ksz8851snl.c .


Enable Receive Broadcast frames

Definition at line 146 of file ksz8851snl.c .

#define RX_FLOW_CTRL_BURST_LEN_16   0x0040

16 Bytes length

Definition at line 178 of file ksz8851snl.c .

#define RX_FLOW_CTRL_BURST_LEN_32   0x0060

32 Bytes length

Definition at line 180 of file ksz8851snl.c .

#define RX_FLOW_CTRL_BURST_LEN_4   0x0000

4 bytes length

Definition at line 174 of file ksz8851snl.c .

#define RX_FLOW_CTRL_BURST_LEN_8   0x0020

8 Bytes length

Definition at line 176 of file ksz8851snl.c .


Full frame length

Definition at line 182 of file ksz8851snl.c .


Receive Flow Control Burst Length mask

Definition at line 172 of file ksz8851snl.c .


Enable Receive Flow Control

Definition at line 142 of file ksz8851snl.c .

#define RX_FLOW_CTRL_FLUSH_QUEUE   0x8000

Flush Receive Queue

Definition at line 132 of file ksz8851snl.c .


Enable ICMP frame

Definition at line 190 of file ksz8851snl.c .


Receive Inverse Filtering

Definition at line 156 of file ksz8851snl.c .

#define RX_FLOW_CTRL_IP_CHECKSUM   0x1000

Enable Receive IP Frame Checksum Check

Definition at line 138 of file ksz8851snl.c .

#define RX_FLOW_CTRL_IPV6_UDP_FRAG_PASS   0x0010

IPV4/IPV6/UDP Fragment Frame Pass

Definition at line 184 of file ksz8851snl.c .

#define RX_FLOW_CTRL_IPV6_UDP_ZERO_PASS   0x0008

IPV4/IPV6/UDP Frame Checksum Equal Zero

Definition at line 186 of file ksz8851snl.c .

#define RX_FLOW_CTRL_MAC_FILTER   0x0800

Receive Physical Address Filtering with MAC Address Enable

Definition at line 140 of file ksz8851snl.c .


Enable Receive Multicast frames

Definition at line 148 of file ksz8851snl.c .


Receive all incoming frames

Definition at line 152 of file ksz8851snl.c .

#define RX_FLOW_CTRL_RX_ALL   0x0010

Receive all frames

Definition at line 154 of file ksz8851snl.c .

#define RX_FLOW_CTRL_RX_ENABLE   0x0001

Enable receive

Definition at line 158 of file ksz8851snl.c .

#define RX_FLOW_CTRL_TCP_CHECKSUM   0x2000

Enable Receive TCP Frame Checksum Check

Definition at line 136 of file ksz8851snl.c .

#define RX_FLOW_CTRL_UDP_CHECKSUM   0x4000

Enable Receive UDP Frame Checksum Check

Definition at line 134 of file ksz8851snl.c .


Enable UDP Lite frame

Definition at line 188 of file ksz8851snl.c .


Enable Receive Unicast frames

Definition at line 150 of file ksz8851snl.c .

#define RXCR1   0x74

Receive Flow Control Register 1

Definition at line 36 of file ksz8851snl.c .

#define RXCR2   0x76

Receive Flow Control Register 2

Definition at line 37 of file ksz8851snl.c .

#define RXFCTR   0x9C

RX Frame Count & Threshold Register

Definition at line 47 of file ksz8851snl.c .

#define RXFDPR   0x86

RX Frame Data Pointer Register

Definition at line 44 of file ksz8851snl.c .

#define RXFHBCR   0x7E

Receive Frame Header Bytecount Register

Definition at line 40 of file ksz8851snl.c .

#define RXFHSR   0x7C

Receive Frame Header Status Register

Definition at line 39 of file ksz8851snl.c .

#define RXQ_AUTO_DEQUEUE   0x0010

Enable Auto Dequeue RXQ Frame

Definition at line 216 of file ksz8851snl.c .

Definition: ksz8851snl.c:214
Definition: ksz8851snl.c:216

RX COMMAND Initialization collection

Definition at line 223 of file ksz8851snl.c .

#define RXQ_EN_ON_BYTE_CNT_INT   0x0040

Enable RX interrupt on byte count threshold

Definition at line 212 of file ksz8851snl.c .

#define RXQ_EN_ON_FRAME_CNT_INT   0x0020

Enable RX interrupt on frame count threshold

Definition at line 214 of file ksz8851snl.c .

#define RXQ_EN_ON_TIME_INT   0x0080

Enable RX interrupt on timer duration

Definition at line 210 of file ksz8851snl.c .

#define RXQ_ON_BYTE_CNT_INT   0x0800

RX interrupt is occured on byte count threshold

Definition at line 204 of file ksz8851snl.c .

#define RXQ_ON_FRAME_CNT_INT   0x0400

RX interrupt is occured on frame count threshold

Definition at line 206 of file ksz8851snl.c .

#define RXQ_ON_TIME_INT   0x1000

RX interrupt is occured on timer duration

Definition at line 202 of file ksz8851snl.c .

#define RXQ_RELEASE_ERROR_FRAME   0x0001

Release RX Error Frame

Definition at line 220 of file ksz8851snl.c .

#define RXQ_START_DMA   0x0008

Start QMU transfer operation

Definition at line 218 of file ksz8851snl.c .

#define RXQ_TWOBYTE_OFFSET   0x0200

Enable adding 2-bytes offset before IP frame header

Definition at line 208 of file ksz8851snl.c .

#define RXQCR   0x82

RXQ Command Register

Definition at line 42 of file ksz8851snl.c .

Definition: ksz8851snl.c:110
Definition: ksz8851snl.c:106
Definition: ksz8851snl.c:98
Definition: ksz8851snl.c:108
Definition: ksz8851snl.c:100
Definition: ksz8851snl.c:102

TX FLOW CONTROL Initialization collection

Definition at line 115 of file ksz8851snl.c .

#define TX_FLOW_CTRL_CRC_ENABLE   0x0002

Transmit CRC Enable

Definition at line 110 of file ksz8851snl.c .

#define TX_FLOW_CTRL_ENABLE   0x0001

Enable tranmsit

Definition at line 112 of file ksz8851snl.c .

#define TX_FLOW_CTRL_FLOW_ENABLE   0x0008

Transmit flow control enable

Definition at line 106 of file ksz8851snl.c .

#define TX_FLOW_CTRL_FLUSH_QUEUE   0x0010

Flush Transmit Queue

Definition at line 104 of file ksz8851snl.c .


Enable Transmit Checksum Generation for ICMP

Definition at line 98 of file ksz8851snl.c .

#define TX_FLOW_CTRL_IP_CHECKSUM   0x0020

Enable Transmit Checksum Generation for IP

Definition at line 102 of file ksz8851snl.c .

#define TX_FLOW_CTRL_PAD_ENABLE   0x0004

Transmit Padding enable

Definition at line 108 of file ksz8851snl.c .

#define TX_FLOW_CTRL_TCP_CHECKSUM   0x0040

Enable Transmit Checksum Generation for TCP

Definition at line 100 of file ksz8851snl.c .

#define TX_INT_on_COMPLETION   0x8000

TX INT on completion

Definition at line 82 of file ksz8851snl.c .

#define TX_MEM_AVAIL_MASK   0x1FFF

Used to mask the reserved bits

Definition at line 67 of file ksz8851snl.c .

#define TX_MEMORY_WAIT_MS   500

wait time in ms for TX memory to be available

Definition at line 294 of file ksz8851snl.c .

#define TXCR   0x70

Transmit Flow Control Register

Definition at line 35 of file ksz8851snl.c .

#define TXFDPR   0x84

TX Frame Data Pointer Register

Definition at line 43 of file ksz8851snl.c .

#define TXMIR   0x78

TXQ Memory Information Register

Definition at line 38 of file ksz8851snl.c .

#define TXNTFSR   0x9E

TX Next Frame size register

Definition at line 48 of file ksz8851snl.c .

#define TXQ_AUTO_ENQUEUE   0x0004

Enable Auto-Enqueue TXQ Frame

Definition at line 124 of file ksz8851snl.c .

#define TXQ_ENQUEUE   0x0001

Enable Manual Engueue TXQ Frame

Definition at line 128 of file ksz8851snl.c .

#define TXQ_MEM_AVAILABLE_INT   0x0002

Enable INT generation when TXQ Memory Available

Definition at line 126 of file ksz8851snl.c .

#define TXQCR   0x80

TXQ Command Register

Definition at line 41 of file ksz8851snl.c .

#define VALID_FRAME_MASK   0x8000

RXFV Receive Frame Valid of the RXFHSR register

Definition at line 75 of file ksz8851snl.c .

#define WATERMARK_4KB   0x0400

4KByte Watermark

Definition at line 87 of file ksz8851snl.c .

#define WATERMARK_6KB   0x0600

6KByte Watermark

Definition at line 86 of file ksz8851snl.c .

#define WORD_SIZE   0x0004

Word size in # of bytes

Definition at line 83 of file ksz8851snl.c .

Function Documentation

static uint32_t MIBCountersRead ( uint16_t offset )

helper function for KSZ8851SNL_UpdateMIBCounters

[in] offset The offset specifies which MIB counter you want to read
The value of the MIB Counter

Definition at line 364 of file ksz8851snl.c .

static void ReleaseIncosistentFrame ( void )

Release the current frame if it is inconsistent.

Support method used for minimizing the code size.

Definition at line 844 of file ksz8851snl.c .

Variable Documentation

KSZ8851SLN_mib_t mibCounters

Copy of the current MIB counters values from the ksz8851snl. This is updated by calling KSZ8851SNL_MIBCountersUpdate .

The datasheet recommends that the MIB counter values are read at least every 30 seconds because of counter overflow possibility.

Definition at line 352 of file ksz8851snl.c .