346 lines
14 KiB
C
346 lines
14 KiB
C
/****************************************************************************/
|
|
|
|
/*
|
|
* 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>
|
|
|
|
#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
|
|
defined(CONFIG_M520x) || defined(CONFIG_M532x) || \
|
|
defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28)
|
|
/*
|
|
* 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 0x010 /* Receive descriptor reg */
|
|
#define FEC_X_DES_ACTIVE 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_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 0x180 /* Receive descriptor ring */
|
|
#define FEC_X_DES_START 0x184 /* Transmit descriptor ring */
|
|
#define FEC_R_BUFF_SIZE 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_RACC 0x1C4 /* Receive Accelerator function */
|
|
#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 0x010 /* Receive descriptor reg */
|
|
#define FEC_X_DES_ACTIVE 0x014 /* Transmit descriptor reg */
|
|
#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 0x3d0 /* Receive descriptor ring */
|
|
#define FEC_X_DES_START 0x3d4 /* Transmit descriptor ring */
|
|
#define FEC_R_BUFF_SIZE 0x3d8 /* Maximum receive buff size */
|
|
#define FEC_FIFO_RAM 0x400 /* FIFO RAM buffer */
|
|
|
|
#endif /* CONFIG_M5272 */
|
|
|
|
|
|
/*
|
|
* Define the buffer descriptor structure.
|
|
*/
|
|
#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28)
|
|
struct bufdesc {
|
|
unsigned short cbd_datlen; /* Data length */
|
|
unsigned short cbd_sc; /* Control and status info */
|
|
unsigned long cbd_bufaddr; /* Buffer address */
|
|
};
|
|
#else
|
|
struct bufdesc {
|
|
unsigned short cbd_sc; /* Control and status info */
|
|
unsigned short cbd_datlen; /* Data length */
|
|
unsigned long cbd_bufaddr; /* Buffer address */
|
|
};
|
|
#endif
|
|
|
|
struct bufdesc_ex {
|
|
struct bufdesc desc;
|
|
unsigned long cbd_esc;
|
|
unsigned long cbd_prot;
|
|
unsigned long cbd_bdu;
|
|
unsigned long ts;
|
|
unsigned short 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)0x03ff) /* 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
|
|
|
|
/* 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 8
|
|
#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 16 /* Must be power of two */
|
|
#define TX_RING_MOD_MASK 15 /* 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)
|
|
|
|
struct fec_enet_delayed_work {
|
|
struct delayed_work delay_work;
|
|
bool timeout;
|
|
bool trig_tx;
|
|
};
|
|
|
|
/* 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_enet_out;
|
|
struct clk *clk_ptp;
|
|
|
|
/* The saved address of a sent-in-place packet/buffer, for skfree(). */
|
|
unsigned char *tx_bounce[TX_RING_SIZE];
|
|
struct sk_buff *tx_skbuff[TX_RING_SIZE];
|
|
struct sk_buff *rx_skbuff[RX_RING_SIZE];
|
|
|
|
/* CPM dual port RAM relative addresses */
|
|
dma_addr_t bd_dma;
|
|
/* Address of Rx and Tx buffers */
|
|
struct bufdesc *rx_bd_base;
|
|
struct bufdesc *tx_bd_base;
|
|
/* The next free ring entry */
|
|
struct bufdesc *cur_rx, *cur_tx;
|
|
/* The ring entries to be free()ed */
|
|
struct bufdesc *dirty_tx;
|
|
|
|
unsigned short tx_ring_size;
|
|
unsigned short rx_ring_size;
|
|
|
|
struct platform_device *pdev;
|
|
|
|
int opened;
|
|
int dev_id;
|
|
|
|
/* Phylib and MDIO interface */
|
|
struct mii_bus *mii_bus;
|
|
struct phy_device *phy_dev;
|
|
int mii_timeout;
|
|
uint phy_speed;
|
|
phy_interface_t phy_interface;
|
|
int link;
|
|
int full_duplex;
|
|
int speed;
|
|
struct completion mdio_done;
|
|
int irq[FEC_IRQ_NUM];
|
|
int bufdesc_ex;
|
|
int pause_flag;
|
|
|
|
struct napi_struct napi;
|
|
int csum_flags;
|
|
|
|
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 timer_list time_keep;
|
|
struct fec_enet_delayed_work delay_work;
|
|
struct regulator *reg_phy;
|
|
};
|
|
|
|
void fec_ptp_init(struct platform_device *pdev);
|
|
void fec_ptp_start_cyclecounter(struct net_device *ndev);
|
|
int fec_ptp_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd);
|
|
|
|
/****************************************************************************/
|
|
#endif /* FEC_H */
|