forked from Minki/linux
80cca775cd
Execution 'ethtool -S' on fec device that is down causes OOPS on Vybrid board: Unhandled fault: external abort on non-linefetch (0x1008) at 0xe0898200 pgd = ddecc000 [e0898200] *pgd=9e406811, *pte=400d1653, *ppte=400d1453 Internal error: : 1008 [#1] SMP ARM ... Reason of OOPS is that fec_enet_get_ethtool_stats() accesses fec registers while IPG clock is stopped by PM. Fix that by caching statistics in fec_enet_private. Cache is initialized at device probe time, and updated at statistics request time if device is up, and also just before turning device off on down path. Additional locking is not needed, since cached statistics is accessed either before device is registered, or under rtnl_lock(). Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
590 lines
23 KiB
C
590 lines
23 KiB
C
/****************************************************************************/
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/*
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* fec.h -- Fast Ethernet Controller for Motorola ColdFire SoC
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* processors.
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*
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* (C) Copyright 2000-2005, Greg Ungerer (gerg@snapgear.com)
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* (C) Copyright 2000-2001, Lineo (www.lineo.com)
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*/
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/****************************************************************************/
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#ifndef FEC_H
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#define FEC_H
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/****************************************************************************/
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#include <linux/clocksource.h>
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#include <linux/net_tstamp.h>
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#include <linux/ptp_clock_kernel.h>
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#include <linux/timecounter.h>
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#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
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defined(CONFIG_M520x) || defined(CONFIG_M532x) || defined(CONFIG_ARM)
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/*
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* Just figures, Motorola would have to change the offsets for
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* registers in the same peripheral device on different models
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* of the ColdFire!
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*/
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#define FEC_IEVENT 0x004 /* Interrupt event reg */
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#define FEC_IMASK 0x008 /* Interrupt mask reg */
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#define FEC_R_DES_ACTIVE_0 0x010 /* Receive descriptor reg */
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#define FEC_X_DES_ACTIVE_0 0x014 /* Transmit descriptor reg */
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#define FEC_ECNTRL 0x024 /* Ethernet control reg */
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#define FEC_MII_DATA 0x040 /* MII manage frame reg */
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#define FEC_MII_SPEED 0x044 /* MII speed control reg */
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#define FEC_MIB_CTRLSTAT 0x064 /* MIB control/status reg */
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#define FEC_R_CNTRL 0x084 /* Receive control reg */
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#define FEC_X_CNTRL 0x0c4 /* Transmit Control reg */
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#define FEC_ADDR_LOW 0x0e4 /* Low 32bits MAC address */
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#define FEC_ADDR_HIGH 0x0e8 /* High 16bits MAC address */
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#define FEC_OPD 0x0ec /* Opcode + Pause duration */
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#define FEC_TXIC0 0x0f0 /* Tx Interrupt Coalescing for ring 0 */
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#define FEC_TXIC1 0x0f4 /* Tx Interrupt Coalescing for ring 1 */
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#define FEC_TXIC2 0x0f8 /* Tx Interrupt Coalescing for ring 2 */
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#define FEC_RXIC0 0x100 /* Rx Interrupt Coalescing for ring 0 */
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#define FEC_RXIC1 0x104 /* Rx Interrupt Coalescing for ring 1 */
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#define FEC_RXIC2 0x108 /* Rx Interrupt Coalescing for ring 2 */
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#define FEC_HASH_TABLE_HIGH 0x118 /* High 32bits hash table */
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#define FEC_HASH_TABLE_LOW 0x11c /* Low 32bits hash table */
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#define FEC_GRP_HASH_TABLE_HIGH 0x120 /* High 32bits hash table */
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#define FEC_GRP_HASH_TABLE_LOW 0x124 /* Low 32bits hash table */
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#define FEC_X_WMRK 0x144 /* FIFO transmit water mark */
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#define FEC_R_BOUND 0x14c /* FIFO receive bound reg */
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#define FEC_R_FSTART 0x150 /* FIFO receive start reg */
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#define FEC_R_DES_START_1 0x160 /* Receive descriptor ring 1 */
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#define FEC_X_DES_START_1 0x164 /* Transmit descriptor ring 1 */
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#define FEC_R_BUFF_SIZE_1 0x168 /* Maximum receive buff ring1 size */
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#define FEC_R_DES_START_2 0x16c /* Receive descriptor ring 2 */
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#define FEC_X_DES_START_2 0x170 /* Transmit descriptor ring 2 */
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#define FEC_R_BUFF_SIZE_2 0x174 /* Maximum receive buff ring2 size */
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#define FEC_R_DES_START_0 0x180 /* Receive descriptor ring */
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#define FEC_X_DES_START_0 0x184 /* Transmit descriptor ring */
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#define FEC_R_BUFF_SIZE_0 0x188 /* Maximum receive buff size */
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#define FEC_R_FIFO_RSFL 0x190 /* Receive FIFO section full threshold */
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#define FEC_R_FIFO_RSEM 0x194 /* Receive FIFO section empty threshold */
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#define FEC_R_FIFO_RAEM 0x198 /* Receive FIFO almost empty threshold */
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#define FEC_R_FIFO_RAFL 0x19c /* Receive FIFO almost full threshold */
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#define FEC_FTRL 0x1b0 /* Frame truncation receive length*/
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#define FEC_RACC 0x1c4 /* Receive Accelerator function */
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#define FEC_RCMR_1 0x1c8 /* Receive classification match ring 1 */
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#define FEC_RCMR_2 0x1cc /* Receive classification match ring 2 */
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#define FEC_DMA_CFG_1 0x1d8 /* DMA class configuration for ring 1 */
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#define FEC_DMA_CFG_2 0x1dc /* DMA class Configuration for ring 2 */
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#define FEC_R_DES_ACTIVE_1 0x1e0 /* Rx descriptor active for ring 1 */
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#define FEC_X_DES_ACTIVE_1 0x1e4 /* Tx descriptor active for ring 1 */
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#define FEC_R_DES_ACTIVE_2 0x1e8 /* Rx descriptor active for ring 2 */
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#define FEC_X_DES_ACTIVE_2 0x1ec /* Tx descriptor active for ring 2 */
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#define FEC_QOS_SCHEME 0x1f0 /* Set multi queues Qos scheme */
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#define FEC_MIIGSK_CFGR 0x300 /* MIIGSK Configuration reg */
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#define FEC_MIIGSK_ENR 0x308 /* MIIGSK Enable reg */
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#define BM_MIIGSK_CFGR_MII 0x00
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#define BM_MIIGSK_CFGR_RMII 0x01
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#define BM_MIIGSK_CFGR_FRCONT_10M 0x40
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#define RMON_T_DROP 0x200 /* Count of frames not cntd correctly */
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#define RMON_T_PACKETS 0x204 /* RMON TX packet count */
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#define RMON_T_BC_PKT 0x208 /* RMON TX broadcast pkts */
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#define RMON_T_MC_PKT 0x20c /* RMON TX multicast pkts */
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#define RMON_T_CRC_ALIGN 0x210 /* RMON TX pkts with CRC align err */
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#define RMON_T_UNDERSIZE 0x214 /* RMON TX pkts < 64 bytes, good CRC */
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#define RMON_T_OVERSIZE 0x218 /* RMON TX pkts > MAX_FL bytes good CRC */
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#define RMON_T_FRAG 0x21c /* RMON TX pkts < 64 bytes, bad CRC */
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#define RMON_T_JAB 0x220 /* RMON TX pkts > MAX_FL bytes, bad CRC */
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#define RMON_T_COL 0x224 /* RMON TX collision count */
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#define RMON_T_P64 0x228 /* RMON TX 64 byte pkts */
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#define RMON_T_P65TO127 0x22c /* RMON TX 65 to 127 byte pkts */
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#define RMON_T_P128TO255 0x230 /* RMON TX 128 to 255 byte pkts */
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#define RMON_T_P256TO511 0x234 /* RMON TX 256 to 511 byte pkts */
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#define RMON_T_P512TO1023 0x238 /* RMON TX 512 to 1023 byte pkts */
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#define RMON_T_P1024TO2047 0x23c /* RMON TX 1024 to 2047 byte pkts */
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#define RMON_T_P_GTE2048 0x240 /* RMON TX pkts > 2048 bytes */
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#define RMON_T_OCTETS 0x244 /* RMON TX octets */
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#define IEEE_T_DROP 0x248 /* Count of frames not counted crtly */
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#define IEEE_T_FRAME_OK 0x24c /* Frames tx'd OK */
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#define IEEE_T_1COL 0x250 /* Frames tx'd with single collision */
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#define IEEE_T_MCOL 0x254 /* Frames tx'd with multiple collision */
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#define IEEE_T_DEF 0x258 /* Frames tx'd after deferral delay */
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#define IEEE_T_LCOL 0x25c /* Frames tx'd with late collision */
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#define IEEE_T_EXCOL 0x260 /* Frames tx'd with excesv collisions */
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#define IEEE_T_MACERR 0x264 /* Frames tx'd with TX FIFO underrun */
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#define IEEE_T_CSERR 0x268 /* Frames tx'd with carrier sense err */
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#define IEEE_T_SQE 0x26c /* Frames tx'd with SQE err */
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#define IEEE_T_FDXFC 0x270 /* Flow control pause frames tx'd */
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#define IEEE_T_OCTETS_OK 0x274 /* Octet count for frames tx'd w/o err */
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#define RMON_R_PACKETS 0x284 /* RMON RX packet count */
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#define RMON_R_BC_PKT 0x288 /* RMON RX broadcast pkts */
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#define RMON_R_MC_PKT 0x28c /* RMON RX multicast pkts */
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#define RMON_R_CRC_ALIGN 0x290 /* RMON RX pkts with CRC alignment err */
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#define RMON_R_UNDERSIZE 0x294 /* RMON RX pkts < 64 bytes, good CRC */
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#define RMON_R_OVERSIZE 0x298 /* RMON RX pkts > MAX_FL bytes good CRC */
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#define RMON_R_FRAG 0x29c /* RMON RX pkts < 64 bytes, bad CRC */
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#define RMON_R_JAB 0x2a0 /* RMON RX pkts > MAX_FL bytes, bad CRC */
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#define RMON_R_RESVD_O 0x2a4 /* Reserved */
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#define RMON_R_P64 0x2a8 /* RMON RX 64 byte pkts */
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#define RMON_R_P65TO127 0x2ac /* RMON RX 65 to 127 byte pkts */
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#define RMON_R_P128TO255 0x2b0 /* RMON RX 128 to 255 byte pkts */
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#define RMON_R_P256TO511 0x2b4 /* RMON RX 256 to 511 byte pkts */
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#define RMON_R_P512TO1023 0x2b8 /* RMON RX 512 to 1023 byte pkts */
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#define RMON_R_P1024TO2047 0x2bc /* RMON RX 1024 to 2047 byte pkts */
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#define RMON_R_P_GTE2048 0x2c0 /* RMON RX pkts > 2048 bytes */
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#define RMON_R_OCTETS 0x2c4 /* RMON RX octets */
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#define IEEE_R_DROP 0x2c8 /* Count frames not counted correctly */
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#define IEEE_R_FRAME_OK 0x2cc /* Frames rx'd OK */
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#define IEEE_R_CRC 0x2d0 /* Frames rx'd with CRC err */
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#define IEEE_R_ALIGN 0x2d4 /* Frames rx'd with alignment err */
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#define IEEE_R_MACERR 0x2d8 /* Receive FIFO overflow count */
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#define IEEE_R_FDXFC 0x2dc /* Flow control pause frames rx'd */
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#define IEEE_R_OCTETS_OK 0x2e0 /* Octet cnt for frames rx'd w/o err */
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#else
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#define FEC_ECNTRL 0x000 /* Ethernet control reg */
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#define FEC_IEVENT 0x004 /* Interrupt even reg */
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#define FEC_IMASK 0x008 /* Interrupt mask reg */
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#define FEC_IVEC 0x00c /* Interrupt vec status reg */
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#define FEC_R_DES_ACTIVE_0 0x010 /* Receive descriptor reg */
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#define FEC_R_DES_ACTIVE_1 FEC_R_DES_ACTIVE_0
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#define FEC_R_DES_ACTIVE_2 FEC_R_DES_ACTIVE_0
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#define FEC_X_DES_ACTIVE_0 0x014 /* Transmit descriptor reg */
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#define FEC_X_DES_ACTIVE_1 FEC_X_DES_ACTIVE_0
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#define FEC_X_DES_ACTIVE_2 FEC_X_DES_ACTIVE_0
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#define FEC_MII_DATA 0x040 /* MII manage frame reg */
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#define FEC_MII_SPEED 0x044 /* MII speed control reg */
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#define FEC_R_BOUND 0x08c /* FIFO receive bound reg */
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#define FEC_R_FSTART 0x090 /* FIFO receive start reg */
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#define FEC_X_WMRK 0x0a4 /* FIFO transmit water mark */
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#define FEC_X_FSTART 0x0ac /* FIFO transmit start reg */
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#define FEC_R_CNTRL 0x104 /* Receive control reg */
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#define FEC_MAX_FRM_LEN 0x108 /* Maximum frame length reg */
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#define FEC_X_CNTRL 0x144 /* Transmit Control reg */
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#define FEC_ADDR_LOW 0x3c0 /* Low 32bits MAC address */
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#define FEC_ADDR_HIGH 0x3c4 /* High 16bits MAC address */
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#define FEC_GRP_HASH_TABLE_HIGH 0x3c8 /* High 32bits hash table */
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#define FEC_GRP_HASH_TABLE_LOW 0x3cc /* Low 32bits hash table */
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#define FEC_R_DES_START_0 0x3d0 /* Receive descriptor ring */
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#define FEC_R_DES_START_1 FEC_R_DES_START_0
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#define FEC_R_DES_START_2 FEC_R_DES_START_0
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#define FEC_X_DES_START_0 0x3d4 /* Transmit descriptor ring */
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#define FEC_X_DES_START_1 FEC_X_DES_START_0
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#define FEC_X_DES_START_2 FEC_X_DES_START_0
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#define FEC_R_BUFF_SIZE_0 0x3d8 /* Maximum receive buff size */
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#define FEC_R_BUFF_SIZE_1 FEC_R_BUFF_SIZE_0
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#define FEC_R_BUFF_SIZE_2 FEC_R_BUFF_SIZE_0
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#define FEC_FIFO_RAM 0x400 /* FIFO RAM buffer */
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/* Not existed in real chip
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* Just for pass build.
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*/
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#define FEC_RCMR_1 0xfff
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#define FEC_RCMR_2 0xfff
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#define FEC_DMA_CFG_1 0xfff
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#define FEC_DMA_CFG_2 0xfff
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#define FEC_TXIC0 0xfff
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#define FEC_TXIC1 0xfff
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#define FEC_TXIC2 0xfff
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#define FEC_RXIC0 0xfff
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#define FEC_RXIC1 0xfff
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#define FEC_RXIC2 0xfff
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#endif /* CONFIG_M5272 */
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/*
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* Define the buffer descriptor structure.
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*
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* Evidently, ARM SoCs have the FEC block generated in a
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* little endian mode so adjust endianness accordingly.
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*/
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#if defined(CONFIG_ARM)
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#define fec32_to_cpu le32_to_cpu
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#define fec16_to_cpu le16_to_cpu
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#define cpu_to_fec32 cpu_to_le32
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#define cpu_to_fec16 cpu_to_le16
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#define __fec32 __le32
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#define __fec16 __le16
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struct bufdesc {
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__fec16 cbd_datlen; /* Data length */
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__fec16 cbd_sc; /* Control and status info */
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__fec32 cbd_bufaddr; /* Buffer address */
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};
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#else
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#define fec32_to_cpu be32_to_cpu
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#define fec16_to_cpu be16_to_cpu
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#define cpu_to_fec32 cpu_to_be32
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#define cpu_to_fec16 cpu_to_be16
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#define __fec32 __be32
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#define __fec16 __be16
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struct bufdesc {
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__fec16 cbd_sc; /* Control and status info */
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__fec16 cbd_datlen; /* Data length */
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__fec32 cbd_bufaddr; /* Buffer address */
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};
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#endif
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struct bufdesc_ex {
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struct bufdesc desc;
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__fec32 cbd_esc;
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__fec32 cbd_prot;
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__fec32 cbd_bdu;
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__fec32 ts;
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__fec16 res0[4];
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};
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/*
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* The following definitions courtesy of commproc.h, which where
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* Copyright (c) 1997 Dan Malek (dmalek@jlc.net).
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*/
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#define BD_SC_EMPTY ((ushort)0x8000) /* Receive is empty */
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#define BD_SC_READY ((ushort)0x8000) /* Transmit is ready */
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#define BD_SC_WRAP ((ushort)0x2000) /* Last buffer descriptor */
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#define BD_SC_INTRPT ((ushort)0x1000) /* Interrupt on change */
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#define BD_SC_CM ((ushort)0x0200) /* Continuous mode */
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#define BD_SC_ID ((ushort)0x0100) /* Rec'd too many idles */
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#define BD_SC_P ((ushort)0x0100) /* xmt preamble */
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#define BD_SC_BR ((ushort)0x0020) /* Break received */
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#define BD_SC_FR ((ushort)0x0010) /* Framing error */
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#define BD_SC_PR ((ushort)0x0008) /* Parity error */
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#define BD_SC_OV ((ushort)0x0002) /* Overrun */
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#define BD_SC_CD ((ushort)0x0001) /* ?? */
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/* Buffer descriptor control/status used by Ethernet receive.
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*/
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#define BD_ENET_RX_EMPTY ((ushort)0x8000)
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#define BD_ENET_RX_WRAP ((ushort)0x2000)
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#define BD_ENET_RX_INTR ((ushort)0x1000)
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#define BD_ENET_RX_LAST ((ushort)0x0800)
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#define BD_ENET_RX_FIRST ((ushort)0x0400)
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#define BD_ENET_RX_MISS ((ushort)0x0100)
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#define BD_ENET_RX_LG ((ushort)0x0020)
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#define BD_ENET_RX_NO ((ushort)0x0010)
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#define BD_ENET_RX_SH ((ushort)0x0008)
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#define BD_ENET_RX_CR ((ushort)0x0004)
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#define BD_ENET_RX_OV ((ushort)0x0002)
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#define BD_ENET_RX_CL ((ushort)0x0001)
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#define BD_ENET_RX_STATS ((ushort)0x013f) /* All status bits */
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/* Enhanced buffer descriptor control/status used by Ethernet receive */
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#define BD_ENET_RX_VLAN 0x00000004
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/* Buffer descriptor control/status used by Ethernet transmit.
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*/
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#define BD_ENET_TX_READY ((ushort)0x8000)
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#define BD_ENET_TX_PAD ((ushort)0x4000)
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#define BD_ENET_TX_WRAP ((ushort)0x2000)
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#define BD_ENET_TX_INTR ((ushort)0x1000)
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#define BD_ENET_TX_LAST ((ushort)0x0800)
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#define BD_ENET_TX_TC ((ushort)0x0400)
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#define BD_ENET_TX_DEF ((ushort)0x0200)
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#define BD_ENET_TX_HB ((ushort)0x0100)
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#define BD_ENET_TX_LC ((ushort)0x0080)
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#define BD_ENET_TX_RL ((ushort)0x0040)
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#define BD_ENET_TX_RCMASK ((ushort)0x003c)
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#define BD_ENET_TX_UN ((ushort)0x0002)
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#define BD_ENET_TX_CSL ((ushort)0x0001)
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#define BD_ENET_TX_STATS ((ushort)0x0fff) /* All status bits */
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/* enhanced buffer descriptor control/status used by Ethernet transmit */
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#define BD_ENET_TX_INT 0x40000000
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#define BD_ENET_TX_TS 0x20000000
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#define BD_ENET_TX_PINS 0x10000000
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#define BD_ENET_TX_IINS 0x08000000
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/* This device has up to three irqs on some platforms */
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#define FEC_IRQ_NUM 3
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/* Maximum number of queues supported
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* ENET with AVB IP can support up to 3 independent tx queues and rx queues.
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* User can point the queue number that is less than or equal to 3.
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*/
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#define FEC_ENET_MAX_TX_QS 3
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#define FEC_ENET_MAX_RX_QS 3
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#define FEC_R_DES_START(X) (((X) == 1) ? FEC_R_DES_START_1 : \
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(((X) == 2) ? \
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FEC_R_DES_START_2 : FEC_R_DES_START_0))
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#define FEC_X_DES_START(X) (((X) == 1) ? FEC_X_DES_START_1 : \
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(((X) == 2) ? \
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FEC_X_DES_START_2 : FEC_X_DES_START_0))
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#define FEC_R_BUFF_SIZE(X) (((X) == 1) ? FEC_R_BUFF_SIZE_1 : \
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(((X) == 2) ? \
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FEC_R_BUFF_SIZE_2 : FEC_R_BUFF_SIZE_0))
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#define FEC_DMA_CFG(X) (((X) == 2) ? FEC_DMA_CFG_2 : FEC_DMA_CFG_1)
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#define DMA_CLASS_EN (1 << 16)
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#define FEC_RCMR(X) (((X) == 2) ? FEC_RCMR_2 : FEC_RCMR_1)
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#define IDLE_SLOPE_MASK 0xffff
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#define IDLE_SLOPE_1 0x200 /* BW fraction: 0.5 */
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#define IDLE_SLOPE_2 0x200 /* BW fraction: 0.5 */
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#define IDLE_SLOPE(X) (((X) == 1) ? \
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(IDLE_SLOPE_1 & IDLE_SLOPE_MASK) : \
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(IDLE_SLOPE_2 & IDLE_SLOPE_MASK))
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#define RCMR_MATCHEN (0x1 << 16)
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#define RCMR_CMP_CFG(v, n) (((v) & 0x7) << (n << 2))
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#define RCMR_CMP_1 (RCMR_CMP_CFG(0, 0) | RCMR_CMP_CFG(1, 1) | \
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RCMR_CMP_CFG(2, 2) | RCMR_CMP_CFG(3, 3))
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#define RCMR_CMP_2 (RCMR_CMP_CFG(4, 0) | RCMR_CMP_CFG(5, 1) | \
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RCMR_CMP_CFG(6, 2) | RCMR_CMP_CFG(7, 3))
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#define RCMR_CMP(X) (((X) == 1) ? RCMR_CMP_1 : RCMR_CMP_2)
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#define FEC_TX_BD_FTYPE(X) (((X) & 0xf) << 20)
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/* The number of Tx and Rx buffers. These are allocated from the page
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* pool. The code may assume these are power of two, so it it best
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* to keep them that size.
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* We don't need to allocate pages for the transmitter. We just use
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* the skbuffer directly.
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*/
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#define FEC_ENET_RX_PAGES 256
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#define FEC_ENET_RX_FRSIZE 2048
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#define FEC_ENET_RX_FRPPG (PAGE_SIZE / FEC_ENET_RX_FRSIZE)
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#define RX_RING_SIZE (FEC_ENET_RX_FRPPG * FEC_ENET_RX_PAGES)
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#define FEC_ENET_TX_FRSIZE 2048
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#define FEC_ENET_TX_FRPPG (PAGE_SIZE / FEC_ENET_TX_FRSIZE)
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#define TX_RING_SIZE 512 /* Must be power of two */
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#define TX_RING_MOD_MASK 511 /* for this to work */
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#define BD_ENET_RX_INT 0x00800000
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#define BD_ENET_RX_PTP ((ushort)0x0400)
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#define BD_ENET_RX_ICE 0x00000020
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#define BD_ENET_RX_PCR 0x00000010
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#define FLAG_RX_CSUM_ENABLED (BD_ENET_RX_ICE | BD_ENET_RX_PCR)
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#define FLAG_RX_CSUM_ERROR (BD_ENET_RX_ICE | BD_ENET_RX_PCR)
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/* Interrupt events/masks. */
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#define FEC_ENET_HBERR ((uint)0x80000000) /* Heartbeat error */
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#define FEC_ENET_BABR ((uint)0x40000000) /* Babbling receiver */
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#define FEC_ENET_BABT ((uint)0x20000000) /* Babbling transmitter */
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#define FEC_ENET_GRA ((uint)0x10000000) /* Graceful stop complete */
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#define FEC_ENET_TXF_0 ((uint)0x08000000) /* Full frame transmitted */
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#define FEC_ENET_TXF_1 ((uint)0x00000008) /* Full frame transmitted */
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#define FEC_ENET_TXF_2 ((uint)0x00000080) /* Full frame transmitted */
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#define FEC_ENET_TXB ((uint)0x04000000) /* A buffer was transmitted */
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#define FEC_ENET_RXF_0 ((uint)0x02000000) /* Full frame received */
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#define FEC_ENET_RXF_1 ((uint)0x00000002) /* Full frame received */
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#define FEC_ENET_RXF_2 ((uint)0x00000020) /* Full frame received */
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#define FEC_ENET_RXB ((uint)0x01000000) /* A buffer was received */
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#define FEC_ENET_MII ((uint)0x00800000) /* MII interrupt */
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#define FEC_ENET_EBERR ((uint)0x00400000) /* SDMA bus error */
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#define FEC_ENET_WAKEUP ((uint)0x00020000) /* Wakeup request */
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#define FEC_ENET_TXF (FEC_ENET_TXF_0 | FEC_ENET_TXF_1 | FEC_ENET_TXF_2)
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#define FEC_ENET_RXF (FEC_ENET_RXF_0 | FEC_ENET_RXF_1 | FEC_ENET_RXF_2)
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#define FEC_ENET_TS_AVAIL ((uint)0x00010000)
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#define FEC_ENET_TS_TIMER ((uint)0x00008000)
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#define FEC_DEFAULT_IMASK (FEC_ENET_TXF | FEC_ENET_RXF | FEC_ENET_MII | FEC_ENET_TS_TIMER)
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#define FEC_NAPI_IMASK (FEC_ENET_MII | FEC_ENET_TS_TIMER)
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#define FEC_RX_DISABLED_IMASK (FEC_DEFAULT_IMASK & (~FEC_ENET_RXF))
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/* ENET interrupt coalescing macro define */
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#define FEC_ITR_CLK_SEL (0x1 << 30)
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#define FEC_ITR_EN (0x1 << 31)
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#define FEC_ITR_ICFT(X) (((X) & 0xff) << 20)
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#define FEC_ITR_ICTT(X) ((X) & 0xffff)
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#define FEC_ITR_ICFT_DEFAULT 200 /* Set 200 frame count threshold */
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#define FEC_ITR_ICTT_DEFAULT 1000 /* Set 1000us timer threshold */
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#define FEC_VLAN_TAG_LEN 0x04
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#define FEC_ETHTYPE_LEN 0x02
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/* Controller is ENET-MAC */
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#define FEC_QUIRK_ENET_MAC (1 << 0)
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/* Controller needs driver to swap frame */
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#define FEC_QUIRK_SWAP_FRAME (1 << 1)
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/* Controller uses gasket */
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#define FEC_QUIRK_USE_GASKET (1 << 2)
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/* Controller has GBIT support */
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#define FEC_QUIRK_HAS_GBIT (1 << 3)
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/* Controller has extend desc buffer */
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#define FEC_QUIRK_HAS_BUFDESC_EX (1 << 4)
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/* Controller has hardware checksum support */
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#define FEC_QUIRK_HAS_CSUM (1 << 5)
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/* Controller has hardware vlan support */
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#define FEC_QUIRK_HAS_VLAN (1 << 6)
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/* ENET IP errata ERR006358
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*
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* If the ready bit in the transmit buffer descriptor (TxBD[R]) is previously
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* detected as not set during a prior frame transmission, then the
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* ENET_TDAR[TDAR] bit is cleared at a later time, even if additional TxBDs
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* were added to the ring and the ENET_TDAR[TDAR] bit is set. This results in
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* frames not being transmitted until there is a 0-to-1 transition on
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* ENET_TDAR[TDAR].
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*/
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#define FEC_QUIRK_ERR006358 (1 << 7)
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/* ENET IP hw AVB
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*
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* i.MX6SX ENET IP add Audio Video Bridging (AVB) feature support.
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* - Two class indicators on receive with configurable priority
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* - Two class indicators and line speed timer on transmit allowing
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* implementation class credit based shapers externally
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* - Additional DMA registers provisioned to allow managing up to 3
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* independent rings
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*/
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#define FEC_QUIRK_HAS_AVB (1 << 8)
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/* There is a TDAR race condition for mutliQ when the software sets TDAR
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* and the UDMA clears TDAR simultaneously or in a small window (2-4 cycles).
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* This will cause the udma_tx and udma_tx_arbiter state machines to hang.
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* The issue exist at i.MX6SX enet IP.
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*/
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#define FEC_QUIRK_ERR007885 (1 << 9)
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/* ENET Block Guide/ Chapter for the iMX6SX (PELE) address one issue:
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* After set ENET_ATCR[Capture], there need some time cycles before the counter
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* value is capture in the register clock domain.
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* The wait-time-cycles is at least 6 clock cycles of the slower clock between
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* the register clock and the 1588 clock. The 1588 ts_clk is fixed to 25Mhz,
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* register clock is 66Mhz, so the wait-time-cycles must be greater than 240ns
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* (40ns * 6).
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*/
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#define FEC_QUIRK_BUG_CAPTURE (1 << 10)
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/* Controller has only one MDIO bus */
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#define FEC_QUIRK_SINGLE_MDIO (1 << 11)
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/* Controller supports RACC register */
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#define FEC_QUIRK_HAS_RACC (1 << 12)
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/* Controller supports interrupt coalesc */
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#define FEC_QUIRK_HAS_COALESCE (1 << 13)
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/* Interrupt doesn't wake CPU from deep idle */
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|
#define FEC_QUIRK_ERR006687 (1 << 14)
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|
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struct bufdesc_prop {
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int qid;
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/* Address of Rx and Tx buffers */
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struct bufdesc *base;
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struct bufdesc *last;
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struct bufdesc *cur;
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void __iomem *reg_desc_active;
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dma_addr_t dma;
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unsigned short ring_size;
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unsigned char dsize;
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unsigned char dsize_log2;
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|
};
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struct fec_enet_priv_tx_q {
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|
struct bufdesc_prop bd;
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|
unsigned char *tx_bounce[TX_RING_SIZE];
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struct sk_buff *tx_skbuff[TX_RING_SIZE];
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|
|
unsigned short tx_stop_threshold;
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|
unsigned short tx_wake_threshold;
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|
|
struct bufdesc *dirty_tx;
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|
char *tso_hdrs;
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|
dma_addr_t tso_hdrs_dma;
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|
};
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|
|
struct fec_enet_priv_rx_q {
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|
struct bufdesc_prop bd;
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|
struct sk_buff *rx_skbuff[RX_RING_SIZE];
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|
};
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|
|
|
/* 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;
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|
|
|
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];
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|
|
|
unsigned int total_tx_ring_size;
|
|
unsigned int total_rx_ring_size;
|
|
|
|
unsigned long work_tx;
|
|
unsigned long work_rx;
|
|
unsigned long work_ts;
|
|
unsigned long work_mdio;
|
|
|
|
struct platform_device *pdev;
|
|
|
|
int dev_id;
|
|
|
|
/* Phylib and MDIO interface */
|
|
struct mii_bus *mii_bus;
|
|
int mii_timeout;
|
|
uint phy_speed;
|
|
phy_interface_t phy_interface;
|
|
struct device_node *phy_node;
|
|
int link;
|
|
int full_duplex;
|
|
int speed;
|
|
struct completion mdio_done;
|
|
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;
|
|
|
|
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[0];
|
|
};
|
|
|
|
void fec_ptp_init(struct platform_device *pdev);
|
|
void fec_ptp_stop(struct platform_device *pdev);
|
|
void fec_ptp_start_cyclecounter(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);
|
|
uint fec_ptp_check_pps_event(struct fec_enet_private *fep);
|
|
|
|
/****************************************************************************/
|
|
#endif /* FEC_H */
|