/****************************************************************************/ /* * 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 #include #include #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 #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 */ /* 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; }; /* 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; 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; }; void fec_ptp_init(struct net_device *ndev, 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 */