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linux/drivers/net/ethernet/freescale/fec.h

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/* SPDX-License-Identifier: GPL-2.0 */
/****************************************************************************/
/*
* fec.h -- Fast Ethernet Controller for Motorola ColdFire SoC
* processors.
*
* (C) Copyright 2000-2005, Greg Ungerer (gerg@snapgear.com)
* (C) Copyright 2000-2001, Lineo (www.lineo.com)
*/
/****************************************************************************/
#ifndef FEC_H
#define FEC_H
/****************************************************************************/
#include <linux/clocksource.h>
#include <linux/net_tstamp.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/timecounter.h>
#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM) || \
defined(CONFIG_ARM64) || defined(CONFIG_COMPILE_TEST)
/*
* Just figures, Motorola would have to change the offsets for
* registers in the same peripheral device on different models
* of the ColdFire!
*/
#define FEC_IEVENT 0x004 /* Interrupt event reg */
#define FEC_IMASK 0x008 /* Interrupt mask reg */
#define FEC_R_DES_ACTIVE_0 0x010 /* Receive descriptor reg */
#define FEC_X_DES_ACTIVE_0 0x014 /* Transmit descriptor reg */
#define FEC_ECNTRL 0x024 /* Ethernet control reg */
#define FEC_MII_DATA 0x040 /* MII manage frame reg */
#define FEC_MII_SPEED 0x044 /* MII speed control reg */
#define FEC_MIB_CTRLSTAT 0x064 /* MIB control/status reg */
#define FEC_R_CNTRL 0x084 /* Receive control reg */
#define FEC_X_CNTRL 0x0c4 /* Transmit Control reg */
#define FEC_ADDR_LOW 0x0e4 /* Low 32bits MAC address */
#define FEC_ADDR_HIGH 0x0e8 /* High 16bits MAC address */
#define FEC_OPD 0x0ec /* Opcode + Pause duration */
#define FEC_TXIC0 0x0f0 /* Tx Interrupt Coalescing for ring 0 */
#define FEC_TXIC1 0x0f4 /* Tx Interrupt Coalescing for ring 1 */
#define FEC_TXIC2 0x0f8 /* Tx Interrupt Coalescing for ring 2 */
#define FEC_RXIC0 0x100 /* Rx Interrupt Coalescing for ring 0 */
#define FEC_RXIC1 0x104 /* Rx Interrupt Coalescing for ring 1 */
#define FEC_RXIC2 0x108 /* Rx Interrupt Coalescing for ring 2 */
#define FEC_HASH_TABLE_HIGH 0x118 /* High 32bits hash table */
#define FEC_HASH_TABLE_LOW 0x11c /* Low 32bits hash table */
#define FEC_GRP_HASH_TABLE_HIGH 0x120 /* High 32bits hash table */
#define FEC_GRP_HASH_TABLE_LOW 0x124 /* Low 32bits hash table */
#define FEC_X_WMRK 0x144 /* FIFO transmit water mark */
#define FEC_R_BOUND 0x14c /* FIFO receive bound reg */
#define FEC_R_FSTART 0x150 /* FIFO receive start reg */
#define FEC_R_DES_START_1 0x160 /* Receive descriptor ring 1 */
#define FEC_X_DES_START_1 0x164 /* Transmit descriptor ring 1 */
#define FEC_R_BUFF_SIZE_1 0x168 /* Maximum receive buff ring1 size */
#define FEC_R_DES_START_2 0x16c /* Receive descriptor ring 2 */
#define FEC_X_DES_START_2 0x170 /* Transmit descriptor ring 2 */
#define FEC_R_BUFF_SIZE_2 0x174 /* Maximum receive buff ring2 size */
#define FEC_R_DES_START_0 0x180 /* Receive descriptor ring */
#define FEC_X_DES_START_0 0x184 /* Transmit descriptor ring */
#define FEC_R_BUFF_SIZE_0 0x188 /* Maximum receive buff size */
#define FEC_R_FIFO_RSFL 0x190 /* Receive FIFO section full threshold */
#define FEC_R_FIFO_RSEM 0x194 /* Receive FIFO section empty threshold */
#define FEC_R_FIFO_RAEM 0x198 /* Receive FIFO almost empty threshold */
#define FEC_R_FIFO_RAFL 0x19c /* Receive FIFO almost full threshold */
#define FEC_FTRL 0x1b0 /* Frame truncation receive length*/
#define FEC_RACC 0x1c4 /* Receive Accelerator function */
#define FEC_RCMR_1 0x1c8 /* Receive classification match ring 1 */
#define FEC_RCMR_2 0x1cc /* Receive classification match ring 2 */
#define FEC_DMA_CFG_1 0x1d8 /* DMA class configuration for ring 1 */
#define FEC_DMA_CFG_2 0x1dc /* DMA class Configuration for ring 2 */
#define FEC_R_DES_ACTIVE_1 0x1e0 /* Rx descriptor active for ring 1 */
#define FEC_X_DES_ACTIVE_1 0x1e4 /* Tx descriptor active for ring 1 */
#define FEC_R_DES_ACTIVE_2 0x1e8 /* Rx descriptor active for ring 2 */
#define FEC_X_DES_ACTIVE_2 0x1ec /* Tx descriptor active for ring 2 */
#define FEC_QOS_SCHEME 0x1f0 /* Set multi queues Qos scheme */
#define FEC_MIIGSK_CFGR 0x300 /* MIIGSK Configuration reg */
#define FEC_MIIGSK_ENR 0x308 /* MIIGSK Enable reg */
#define BM_MIIGSK_CFGR_MII 0x00
#define BM_MIIGSK_CFGR_RMII 0x01
#define BM_MIIGSK_CFGR_FRCONT_10M 0x40
#define RMON_T_DROP 0x200 /* Count of frames not cntd correctly */
#define RMON_T_PACKETS 0x204 /* RMON TX packet count */
#define RMON_T_BC_PKT 0x208 /* RMON TX broadcast pkts */
#define RMON_T_MC_PKT 0x20c /* RMON TX multicast pkts */
#define RMON_T_CRC_ALIGN 0x210 /* RMON TX pkts with CRC align err */
#define RMON_T_UNDERSIZE 0x214 /* RMON TX pkts < 64 bytes, good CRC */
#define RMON_T_OVERSIZE 0x218 /* RMON TX pkts > MAX_FL bytes good CRC */
#define RMON_T_FRAG 0x21c /* RMON TX pkts < 64 bytes, bad CRC */
#define RMON_T_JAB 0x220 /* RMON TX pkts > MAX_FL bytes, bad CRC */
#define RMON_T_COL 0x224 /* RMON TX collision count */
#define RMON_T_P64 0x228 /* RMON TX 64 byte pkts */
#define RMON_T_P65TO127 0x22c /* RMON TX 65 to 127 byte pkts */
#define RMON_T_P128TO255 0x230 /* RMON TX 128 to 255 byte pkts */
#define RMON_T_P256TO511 0x234 /* RMON TX 256 to 511 byte pkts */
#define RMON_T_P512TO1023 0x238 /* RMON TX 512 to 1023 byte pkts */
#define RMON_T_P1024TO2047 0x23c /* RMON TX 1024 to 2047 byte pkts */
#define RMON_T_P_GTE2048 0x240 /* RMON TX pkts > 2048 bytes */
#define RMON_T_OCTETS 0x244 /* RMON TX octets */
#define IEEE_T_DROP 0x248 /* Count of frames not counted crtly */
#define IEEE_T_FRAME_OK 0x24c /* Frames tx'd OK */
#define IEEE_T_1COL 0x250 /* Frames tx'd with single collision */
#define IEEE_T_MCOL 0x254 /* Frames tx'd with multiple collision */
#define IEEE_T_DEF 0x258 /* Frames tx'd after deferral delay */
#define IEEE_T_LCOL 0x25c /* Frames tx'd with late collision */
#define IEEE_T_EXCOL 0x260 /* Frames tx'd with excesv collisions */
#define IEEE_T_MACERR 0x264 /* Frames tx'd with TX FIFO underrun */
#define IEEE_T_CSERR 0x268 /* Frames tx'd with carrier sense err */
#define IEEE_T_SQE 0x26c /* Frames tx'd with SQE err */
#define IEEE_T_FDXFC 0x270 /* Flow control pause frames tx'd */
#define IEEE_T_OCTETS_OK 0x274 /* Octet count for frames tx'd w/o err */
#define RMON_R_PACKETS 0x284 /* RMON RX packet count */
#define RMON_R_BC_PKT 0x288 /* RMON RX broadcast pkts */
#define RMON_R_MC_PKT 0x28c /* RMON RX multicast pkts */
#define RMON_R_CRC_ALIGN 0x290 /* RMON RX pkts with CRC alignment err */
#define RMON_R_UNDERSIZE 0x294 /* RMON RX pkts < 64 bytes, good CRC */
#define RMON_R_OVERSIZE 0x298 /* RMON RX pkts > MAX_FL bytes good CRC */
#define RMON_R_FRAG 0x29c /* RMON RX pkts < 64 bytes, bad CRC */
#define RMON_R_JAB 0x2a0 /* RMON RX pkts > MAX_FL bytes, bad CRC */
#define RMON_R_RESVD_O 0x2a4 /* Reserved */
#define RMON_R_P64 0x2a8 /* RMON RX 64 byte pkts */
#define RMON_R_P65TO127 0x2ac /* RMON RX 65 to 127 byte pkts */
#define RMON_R_P128TO255 0x2b0 /* RMON RX 128 to 255 byte pkts */
#define RMON_R_P256TO511 0x2b4 /* RMON RX 256 to 511 byte pkts */
#define RMON_R_P512TO1023 0x2b8 /* RMON RX 512 to 1023 byte pkts */
#define RMON_R_P1024TO2047 0x2bc /* RMON RX 1024 to 2047 byte pkts */
#define RMON_R_P_GTE2048 0x2c0 /* RMON RX pkts > 2048 bytes */
#define RMON_R_OCTETS 0x2c4 /* RMON RX octets */
#define IEEE_R_DROP 0x2c8 /* Count frames not counted correctly */
#define IEEE_R_FRAME_OK 0x2cc /* Frames rx'd OK */
#define IEEE_R_CRC 0x2d0 /* Frames rx'd with CRC err */
#define IEEE_R_ALIGN 0x2d4 /* Frames rx'd with alignment err */
#define IEEE_R_MACERR 0x2d8 /* Receive FIFO overflow count */
#define IEEE_R_FDXFC 0x2dc /* Flow control pause frames rx'd */
#define IEEE_R_OCTETS_OK 0x2e0 /* Octet cnt for frames rx'd w/o err */
#else
#define FEC_ECNTRL 0x000 /* Ethernet control reg */
#define FEC_IEVENT 0x004 /* Interrupt even reg */
#define FEC_IMASK 0x008 /* Interrupt mask reg */
#define FEC_IVEC 0x00c /* Interrupt vec status reg */
#define FEC_R_DES_ACTIVE_0 0x010 /* Receive descriptor reg */
#define FEC_R_DES_ACTIVE_1 FEC_R_DES_ACTIVE_0
#define FEC_R_DES_ACTIVE_2 FEC_R_DES_ACTIVE_0
#define FEC_X_DES_ACTIVE_0 0x014 /* Transmit descriptor reg */
#define FEC_X_DES_ACTIVE_1 FEC_X_DES_ACTIVE_0
#define FEC_X_DES_ACTIVE_2 FEC_X_DES_ACTIVE_0
#define FEC_MII_DATA 0x040 /* MII manage frame reg */
#define FEC_MII_SPEED 0x044 /* MII speed control reg */
#define FEC_R_BOUND 0x08c /* FIFO receive bound reg */
#define FEC_R_FSTART 0x090 /* FIFO receive start reg */
#define FEC_X_WMRK 0x0a4 /* FIFO transmit water mark */
#define FEC_X_FSTART 0x0ac /* FIFO transmit start reg */
#define FEC_R_CNTRL 0x104 /* Receive control reg */
#define FEC_MAX_FRM_LEN 0x108 /* Maximum frame length reg */
#define FEC_X_CNTRL 0x144 /* Transmit Control reg */
#define FEC_ADDR_LOW 0x3c0 /* Low 32bits MAC address */
#define FEC_ADDR_HIGH 0x3c4 /* High 16bits MAC address */
#define FEC_GRP_HASH_TABLE_HIGH 0x3c8 /* High 32bits hash table */
#define FEC_GRP_HASH_TABLE_LOW 0x3cc /* Low 32bits hash table */
#define FEC_R_DES_START_0 0x3d0 /* Receive descriptor ring */
#define FEC_R_DES_START_1 FEC_R_DES_START_0
#define FEC_R_DES_START_2 FEC_R_DES_START_0
#define FEC_X_DES_START_0 0x3d4 /* Transmit descriptor ring */
#define FEC_X_DES_START_1 FEC_X_DES_START_0
#define FEC_X_DES_START_2 FEC_X_DES_START_0
#define FEC_R_BUFF_SIZE_0 0x3d8 /* Maximum receive buff size */
#define FEC_R_BUFF_SIZE_1 FEC_R_BUFF_SIZE_0
#define FEC_R_BUFF_SIZE_2 FEC_R_BUFF_SIZE_0
#define FEC_FIFO_RAM 0x400 /* FIFO RAM buffer */
/* Not existed in real chip
* Just for pass build.
*/
#define FEC_RCMR_1 0xfff
#define FEC_RCMR_2 0xfff
#define FEC_DMA_CFG_1 0xfff
#define FEC_DMA_CFG_2 0xfff
#define FEC_TXIC0 0xfff
#define FEC_TXIC1 0xfff
#define FEC_TXIC2 0xfff
#define FEC_RXIC0 0xfff
#define FEC_RXIC1 0xfff
#define FEC_RXIC2 0xfff
#endif /* CONFIG_M5272 */
/*
* Define the buffer descriptor structure.
*
* Evidently, ARM SoCs have the FEC block generated in a
* little endian mode so adjust endianness accordingly.
*/
#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
#define fec32_to_cpu le32_to_cpu
#define fec16_to_cpu le16_to_cpu
#define cpu_to_fec32 cpu_to_le32
#define cpu_to_fec16 cpu_to_le16
#define __fec32 __le32
#define __fec16 __le16
struct bufdesc {
__fec16 cbd_datlen; /* Data length */
__fec16 cbd_sc; /* Control and status info */
__fec32 cbd_bufaddr; /* Buffer address */
};
#else
#define fec32_to_cpu be32_to_cpu
#define fec16_to_cpu be16_to_cpu
#define cpu_to_fec32 cpu_to_be32
#define cpu_to_fec16 cpu_to_be16
#define __fec32 __be32
#define __fec16 __be16
struct bufdesc {
__fec16 cbd_sc; /* Control and status info */
__fec16 cbd_datlen; /* Data length */
__fec32 cbd_bufaddr; /* Buffer address */
};
#endif
struct bufdesc_ex {
struct bufdesc desc;
__fec32 cbd_esc;
__fec32 cbd_prot;
__fec32 cbd_bdu;
__fec32 ts;
__fec16 res0[4];
};
/*
* The following definitions courtesy of commproc.h, which where
* Copyright (c) 1997 Dan Malek (dmalek@jlc.net).
*/
#define BD_SC_EMPTY ((ushort)0x8000) /* Receive is empty */
#define BD_SC_READY ((ushort)0x8000) /* Transmit is ready */
#define BD_SC_WRAP ((ushort)0x2000) /* Last buffer descriptor */
#define BD_SC_INTRPT ((ushort)0x1000) /* Interrupt on change */
#define BD_SC_CM ((ushort)0x0200) /* Continuous mode */
#define BD_SC_ID ((ushort)0x0100) /* Rec'd too many idles */
#define BD_SC_P ((ushort)0x0100) /* xmt preamble */
#define BD_SC_BR ((ushort)0x0020) /* Break received */
#define BD_SC_FR ((ushort)0x0010) /* Framing error */
#define BD_SC_PR ((ushort)0x0008) /* Parity error */
#define BD_SC_OV ((ushort)0x0002) /* Overrun */
#define BD_SC_CD ((ushort)0x0001) /* ?? */
/* Buffer descriptor control/status used by Ethernet receive.
*/
#define BD_ENET_RX_EMPTY ((ushort)0x8000)
#define BD_ENET_RX_WRAP ((ushort)0x2000)
#define BD_ENET_RX_INTR ((ushort)0x1000)
#define BD_ENET_RX_LAST ((ushort)0x0800)
#define BD_ENET_RX_FIRST ((ushort)0x0400)
#define BD_ENET_RX_MISS ((ushort)0x0100)
#define BD_ENET_RX_LG ((ushort)0x0020)
#define BD_ENET_RX_NO ((ushort)0x0010)
#define BD_ENET_RX_SH ((ushort)0x0008)
#define BD_ENET_RX_CR ((ushort)0x0004)
#define BD_ENET_RX_OV ((ushort)0x0002)
#define BD_ENET_RX_CL ((ushort)0x0001)
#define BD_ENET_RX_STATS ((ushort)0x013f) /* All status bits */
/* Enhanced buffer descriptor control/status used by Ethernet receive */
#define BD_ENET_RX_VLAN 0x00000004
/* Buffer descriptor control/status used by Ethernet transmit.
*/
#define BD_ENET_TX_READY ((ushort)0x8000)
#define BD_ENET_TX_PAD ((ushort)0x4000)
#define BD_ENET_TX_WRAP ((ushort)0x2000)
#define BD_ENET_TX_INTR ((ushort)0x1000)
#define BD_ENET_TX_LAST ((ushort)0x0800)
#define BD_ENET_TX_TC ((ushort)0x0400)
#define BD_ENET_TX_DEF ((ushort)0x0200)
#define BD_ENET_TX_HB ((ushort)0x0100)
#define BD_ENET_TX_LC ((ushort)0x0080)
#define BD_ENET_TX_RL ((ushort)0x0040)
#define BD_ENET_TX_RCMASK ((ushort)0x003c)
#define BD_ENET_TX_UN ((ushort)0x0002)
#define BD_ENET_TX_CSL ((ushort)0x0001)
#define BD_ENET_TX_STATS ((ushort)0x0fff) /* All status bits */
/* enhanced buffer descriptor control/status used by Ethernet transmit */
#define BD_ENET_TX_INT 0x40000000
#define BD_ENET_TX_TS 0x20000000
#define BD_ENET_TX_PINS 0x10000000
#define BD_ENET_TX_IINS 0x08000000
/* This device has up to three irqs on some platforms */
#define FEC_IRQ_NUM 3
/* Maximum number of queues supported
* ENET with AVB IP can support up to 3 independent tx queues and rx queues.
* User can point the queue number that is less than or equal to 3.
*/
#define FEC_ENET_MAX_TX_QS 3
#define FEC_ENET_MAX_RX_QS 3
#define FEC_R_DES_START(X) (((X) == 1) ? FEC_R_DES_START_1 : \
(((X) == 2) ? \
FEC_R_DES_START_2 : FEC_R_DES_START_0))
#define FEC_X_DES_START(X) (((X) == 1) ? FEC_X_DES_START_1 : \
(((X) == 2) ? \
FEC_X_DES_START_2 : FEC_X_DES_START_0))
#define FEC_R_BUFF_SIZE(X) (((X) == 1) ? FEC_R_BUFF_SIZE_1 : \
(((X) == 2) ? \
FEC_R_BUFF_SIZE_2 : FEC_R_BUFF_SIZE_0))
#define FEC_DMA_CFG(X) (((X) == 2) ? FEC_DMA_CFG_2 : FEC_DMA_CFG_1)
#define DMA_CLASS_EN (1 << 16)
#define FEC_RCMR(X) (((X) == 2) ? FEC_RCMR_2 : FEC_RCMR_1)
#define IDLE_SLOPE_MASK 0xffff
#define IDLE_SLOPE_1 0x200 /* BW fraction: 0.5 */
#define IDLE_SLOPE_2 0x200 /* BW fraction: 0.5 */
#define IDLE_SLOPE(X) (((X) == 1) ? \
(IDLE_SLOPE_1 & IDLE_SLOPE_MASK) : \
(IDLE_SLOPE_2 & IDLE_SLOPE_MASK))
#define RCMR_MATCHEN (0x1 << 16)
#define RCMR_CMP_CFG(v, n) (((v) & 0x7) << (n << 2))
#define RCMR_CMP_1 (RCMR_CMP_CFG(0, 0) | RCMR_CMP_CFG(1, 1) | \
RCMR_CMP_CFG(2, 2) | RCMR_CMP_CFG(3, 3))
#define RCMR_CMP_2 (RCMR_CMP_CFG(4, 0) | RCMR_CMP_CFG(5, 1) | \
RCMR_CMP_CFG(6, 2) | RCMR_CMP_CFG(7, 3))
#define RCMR_CMP(X) (((X) == 1) ? RCMR_CMP_1 : RCMR_CMP_2)
#define FEC_TX_BD_FTYPE(X) (((X) & 0xf) << 20)
/* The number of Tx and Rx buffers. These are allocated from the page
* pool. The code may assume these are power of two, so it it best
* to keep them that size.
* We don't need to allocate pages for the transmitter. We just use
* the skbuffer directly.
*/
#define FEC_ENET_RX_PAGES 256
#define FEC_ENET_RX_FRSIZE 2048
#define FEC_ENET_RX_FRPPG (PAGE_SIZE / FEC_ENET_RX_FRSIZE)
#define RX_RING_SIZE (FEC_ENET_RX_FRPPG * FEC_ENET_RX_PAGES)
#define FEC_ENET_TX_FRSIZE 2048
#define FEC_ENET_TX_FRPPG (PAGE_SIZE / FEC_ENET_TX_FRSIZE)
#define TX_RING_SIZE 512 /* Must be power of two */
#define TX_RING_MOD_MASK 511 /* for this to work */
#define BD_ENET_RX_INT 0x00800000
#define BD_ENET_RX_PTP ((ushort)0x0400)
#define BD_ENET_RX_ICE 0x00000020
#define BD_ENET_RX_PCR 0x00000010
#define FLAG_RX_CSUM_ENABLED (BD_ENET_RX_ICE | BD_ENET_RX_PCR)
#define FLAG_RX_CSUM_ERROR (BD_ENET_RX_ICE | BD_ENET_RX_PCR)
/* Interrupt events/masks. */
#define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
#define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */
#define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */
#define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */
#define FEC_ENET_TXF_0 ((uint)0x08000000) /* Full frame transmitted */
#define FEC_ENET_TXF_1 ((uint)0x00000008) /* Full frame transmitted */
#define FEC_ENET_TXF_2 ((uint)0x00000080) /* Full frame transmitted */
#define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */
#define FEC_ENET_RXF_0 ((uint)0x02000000) /* Full frame received */
#define FEC_ENET_RXF_1 ((uint)0x00000002) /* Full frame received */
#define FEC_ENET_RXF_2 ((uint)0x00000020) /* Full frame received */
#define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */
#define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */
#define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */
#define FEC_ENET_WAKEUP ((uint)0x00020000) /* Wakeup request */
#define FEC_ENET_TXF (FEC_ENET_TXF_0 | FEC_ENET_TXF_1 | FEC_ENET_TXF_2)
#define FEC_ENET_RXF (FEC_ENET_RXF_0 | FEC_ENET_RXF_1 | FEC_ENET_RXF_2)
#define FEC_ENET_TS_AVAIL ((uint)0x00010000)
#define FEC_ENET_TS_TIMER ((uint)0x00008000)
#define FEC_DEFAULT_IMASK (FEC_ENET_TXF | FEC_ENET_RXF)
#define FEC_RX_DISABLED_IMASK (FEC_DEFAULT_IMASK & (~FEC_ENET_RXF))
/* ENET interrupt coalescing macro define */
#define FEC_ITR_CLK_SEL (0x1 << 30)
#define FEC_ITR_EN (0x1 << 31)
#define FEC_ITR_ICFT(X) (((X) & 0xff) << 20)
#define FEC_ITR_ICTT(X) ((X) & 0xffff)
#define FEC_ITR_ICFT_DEFAULT 200 /* Set 200 frame count threshold */
#define FEC_ITR_ICTT_DEFAULT 1000 /* Set 1000us timer threshold */
#define FEC_VLAN_TAG_LEN 0x04
#define FEC_ETHTYPE_LEN 0x02
/* Controller is ENET-MAC */
#define FEC_QUIRK_ENET_MAC (1 << 0)
/* Controller needs driver to swap frame */
#define FEC_QUIRK_SWAP_FRAME (1 << 1)
/* Controller uses gasket */
#define FEC_QUIRK_USE_GASKET (1 << 2)
/* Controller has GBIT support */
#define FEC_QUIRK_HAS_GBIT (1 << 3)
/* Controller has extend desc buffer */
#define FEC_QUIRK_HAS_BUFDESC_EX (1 << 4)
/* Controller has hardware checksum support */
#define FEC_QUIRK_HAS_CSUM (1 << 5)
/* Controller has hardware vlan support */
#define FEC_QUIRK_HAS_VLAN (1 << 6)
/* ENET IP errata ERR006358
*
* If the ready bit in the transmit buffer descriptor (TxBD[R]) is previously
* detected as not set during a prior frame transmission, then the
* ENET_TDAR[TDAR] bit is cleared at a later time, even if additional TxBDs
* were added to the ring and the ENET_TDAR[TDAR] bit is set. This results in
* frames not being transmitted until there is a 0-to-1 transition on
* ENET_TDAR[TDAR].
*/
#define FEC_QUIRK_ERR006358 (1 << 7)
/* ENET IP hw AVB
*
* i.MX6SX ENET IP add Audio Video Bridging (AVB) feature support.
* - Two class indicators on receive with configurable priority
* - Two class indicators and line speed timer on transmit allowing
* implementation class credit based shapers externally
* - Additional DMA registers provisioned to allow managing up to 3
* independent rings
*/
#define FEC_QUIRK_HAS_AVB (1 << 8)
/* There is a TDAR race condition for mutliQ when the software sets TDAR
* and the UDMA clears TDAR simultaneously or in a small window (2-4 cycles).
* This will cause the udma_tx and udma_tx_arbiter state machines to hang.
* The issue exist at i.MX6SX enet IP.
*/
#define FEC_QUIRK_ERR007885 (1 << 9)
/* ENET Block Guide/ Chapter for the iMX6SX (PELE) address one issue:
* After set ENET_ATCR[Capture], there need some time cycles before the counter
* value is capture in the register clock domain.
* The wait-time-cycles is at least 6 clock cycles of the slower clock between
* the register clock and the 1588 clock. The 1588 ts_clk is fixed to 25Mhz,
* register clock is 66Mhz, so the wait-time-cycles must be greater than 240ns
* (40ns * 6).
*/
#define FEC_QUIRK_BUG_CAPTURE (1 << 10)
/* Controller has only one MDIO bus */
#define FEC_QUIRK_SINGLE_MDIO (1 << 11)
/* Controller supports RACC register */
#define FEC_QUIRK_HAS_RACC (1 << 12)
/* Controller supports interrupt coalesc */
#define FEC_QUIRK_HAS_COALESCE (1 << 13)
/* Interrupt doesn't wake CPU from deep idle */
#define FEC_QUIRK_ERR006687 (1 << 14)
/* The MIB counters should be cleared and enabled during
* initialisation.
*/
#define FEC_QUIRK_MIB_CLEAR (1 << 15)
/* Only i.MX25/i.MX27/i.MX28 controller supports FRBR,FRSR registers,
* those FIFO receive registers are resolved in other platforms.
*/
#define FEC_QUIRK_HAS_FRREG (1 << 16)
struct bufdesc_prop {
int qid;
/* Address of Rx and Tx buffers */
struct bufdesc *base;
struct bufdesc *last;
struct bufdesc *cur;
void __iomem *reg_desc_active;
dma_addr_t dma;
unsigned short ring_size;
unsigned char dsize;
unsigned char dsize_log2;
};
struct fec_enet_priv_tx_q {
struct bufdesc_prop bd;
unsigned char *tx_bounce[TX_RING_SIZE];
struct sk_buff *tx_skbuff[TX_RING_SIZE];
unsigned short tx_stop_threshold;
unsigned short tx_wake_threshold;
struct bufdesc *dirty_tx;
char *tso_hdrs;
dma_addr_t tso_hdrs_dma;
};
struct fec_enet_priv_rx_q {
struct bufdesc_prop bd;
struct sk_buff *rx_skbuff[RX_RING_SIZE];
};
struct fec_stop_mode_gpr {
struct regmap *gpr;
u8 reg;
u8 bit;
};
/* The FEC buffer descriptors track the ring buffers. The rx_bd_base and
* tx_bd_base always point to the base of the buffer descriptors. The
* cur_rx and cur_tx point to the currently available buffer.
* The dirty_tx tracks the current buffer that is being sent by the
* controller. The cur_tx and dirty_tx are equal under both completely
* empty and completely full conditions. The empty/ready indicator in
* the buffer descriptor determines the actual condition.
*/
struct fec_enet_private {
/* Hardware registers of the FEC device */
void __iomem *hwp;
struct net_device *netdev;
struct clk *clk_ipg;
struct clk *clk_ahb;
struct clk *clk_ref;
struct clk *clk_enet_out;
struct clk *clk_ptp;
bool ptp_clk_on;
struct mutex ptp_clk_mutex;
unsigned int num_tx_queues;
unsigned int num_rx_queues;
/* The saved address of a sent-in-place packet/buffer, for skfree(). */
struct fec_enet_priv_tx_q *tx_queue[FEC_ENET_MAX_TX_QS];
struct fec_enet_priv_rx_q *rx_queue[FEC_ENET_MAX_RX_QS];
unsigned int total_tx_ring_size;
unsigned int total_rx_ring_size;
struct platform_device *pdev;
int dev_id;
/* Phylib and MDIO interface */
struct mii_bus *mii_bus;
uint phy_speed;
phy_interface_t phy_interface;
struct device_node *phy_node;
int link;
int full_duplex;
int speed;
int irq[FEC_IRQ_NUM];
bool bufdesc_ex;
int pause_flag;
int wol_flag;
u32 quirks;
struct napi_struct napi;
int csum_flags;
struct work_struct tx_timeout_work;
struct ptp_clock *ptp_clock;
struct ptp_clock_info ptp_caps;
unsigned long last_overflow_check;
spinlock_t tmreg_lock;
struct cyclecounter cc;
struct timecounter tc;
int rx_hwtstamp_filter;
u32 base_incval;
u32 cycle_speed;
int hwts_rx_en;
int hwts_tx_en;
struct delayed_work time_keep;
struct regulator *reg_phy;
struct fec_stop_mode_gpr stop_gpr;
unsigned int tx_align;
unsigned int rx_align;
/* hw interrupt coalesce */
unsigned int rx_pkts_itr;
unsigned int rx_time_itr;
unsigned int tx_pkts_itr;
unsigned int tx_time_itr;
unsigned int itr_clk_rate;
u32 rx_copybreak;
/* ptp clock period in ns*/
unsigned int ptp_inc;
/* pps */
int pps_channel;
unsigned int reload_period;
int pps_enable;
unsigned int next_counter;
u64 ethtool_stats[];
};
void fec_ptp_init(struct platform_device *pdev, int irq_idx);
void fec_ptp_stop(struct platform_device *pdev);
void fec_ptp_start_cyclecounter(struct net_device *ndev);
void fec_ptp_disable_hwts(struct net_device *ndev);
int fec_ptp_set(struct net_device *ndev, struct ifreq *ifr);
int fec_ptp_get(struct net_device *ndev, struct ifreq *ifr);
/****************************************************************************/
#endif /* FEC_H */
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