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u-boot/drivers/net/fec_mxc.h
John Rigby 740d6ae5b9 fec_mxc: add MX25 support 
Use RMII for MX25
Add code to init gasket that enables RMII

Signed-off-by: John Rigby <jcrigby@gmail.com>
CC: Ben Warren <biggerbadderben@gmail.com>
2010-03-07 12:36:36 -06:00

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/*
* (C) Copyright 2009 Ilya Yanok, Emcraft Systems Ltd <yanok@emcraft.com>
* (C) Copyright 2008 Armadeus Systems, nc
* (C) Copyright 2008 Eric Jarrige <eric.jarrige@armadeus.org>
* (C) Copyright 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
* (C) Copyright 2007 Pengutronix, Juergen Beisert <j.beisert@pengutronix.de>
*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* This file is based on mpc4200fec.h
* (C) Copyright Motorola, Inc., 2000
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*/
#ifndef __FEC_MXC_H
#define __FEC_MXC_H
/**
* Layout description of the FEC
*/
struct ethernet_regs {
/* [10:2]addr = 00 */
/* Control and status Registers (offset 000-1FF) */
uint32_t res0[1]; /* MBAR_ETH + 0x000 */
uint32_t ievent; /* MBAR_ETH + 0x004 */
uint32_t imask; /* MBAR_ETH + 0x008 */
uint32_t res1[1]; /* MBAR_ETH + 0x00C */
uint32_t r_des_active; /* MBAR_ETH + 0x010 */
uint32_t x_des_active; /* MBAR_ETH + 0x014 */
uint32_t res2[3]; /* MBAR_ETH + 0x018-20 */
uint32_t ecntrl; /* MBAR_ETH + 0x024 */
uint32_t res3[6]; /* MBAR_ETH + 0x028-03C */
uint32_t mii_data; /* MBAR_ETH + 0x040 */
uint32_t mii_speed; /* MBAR_ETH + 0x044 */
uint32_t res4[7]; /* MBAR_ETH + 0x048-60 */
uint32_t mib_control; /* MBAR_ETH + 0x064 */
uint32_t res5[7]; /* MBAR_ETH + 0x068-80 */
uint32_t r_cntrl; /* MBAR_ETH + 0x084 */
uint32_t res6[15]; /* MBAR_ETH + 0x088-C0 */
uint32_t x_cntrl; /* MBAR_ETH + 0x0C4 */
uint32_t res7[7]; /* MBAR_ETH + 0x0C8-E0 */
uint32_t paddr1; /* MBAR_ETH + 0x0E4 */
uint32_t paddr2; /* MBAR_ETH + 0x0E8 */
uint32_t op_pause; /* MBAR_ETH + 0x0EC */
uint32_t res8[10]; /* MBAR_ETH + 0x0F0-114 */
uint32_t iaddr1; /* MBAR_ETH + 0x118 */
uint32_t iaddr2; /* MBAR_ETH + 0x11C */
uint32_t gaddr1; /* MBAR_ETH + 0x120 */
uint32_t gaddr2; /* MBAR_ETH + 0x124 */
uint32_t res9[7]; /* MBAR_ETH + 0x128-140 */
uint32_t x_wmrk; /* MBAR_ETH + 0x144 */
uint32_t res10[1]; /* MBAR_ETH + 0x148 */
uint32_t r_bound; /* MBAR_ETH + 0x14C */
uint32_t r_fstart; /* MBAR_ETH + 0x150 */
uint32_t res11[11]; /* MBAR_ETH + 0x154-17C */
uint32_t erdsr; /* MBAR_ETH + 0x180 */
uint32_t etdsr; /* MBAR_ETH + 0x184 */
uint32_t emrbr; /* MBAR_ETH + 0x188 */
uint32_t res12[29]; /* MBAR_ETH + 0x18C-1FC */
/* MIB COUNTERS (Offset 200-2FF) */
uint32_t rmon_t_drop; /* MBAR_ETH + 0x200 */
uint32_t rmon_t_packets; /* MBAR_ETH + 0x204 */
uint32_t rmon_t_bc_pkt; /* MBAR_ETH + 0x208 */
uint32_t rmon_t_mc_pkt; /* MBAR_ETH + 0x20C */
uint32_t rmon_t_crc_align; /* MBAR_ETH + 0x210 */
uint32_t rmon_t_undersize; /* MBAR_ETH + 0x214 */
uint32_t rmon_t_oversize; /* MBAR_ETH + 0x218 */
uint32_t rmon_t_frag; /* MBAR_ETH + 0x21C */
uint32_t rmon_t_jab; /* MBAR_ETH + 0x220 */
uint32_t rmon_t_col; /* MBAR_ETH + 0x224 */
uint32_t rmon_t_p64; /* MBAR_ETH + 0x228 */
uint32_t rmon_t_p65to127; /* MBAR_ETH + 0x22C */
uint32_t rmon_t_p128to255; /* MBAR_ETH + 0x230 */
uint32_t rmon_t_p256to511; /* MBAR_ETH + 0x234 */
uint32_t rmon_t_p512to1023; /* MBAR_ETH + 0x238 */
uint32_t rmon_t_p1024to2047; /* MBAR_ETH + 0x23C */
uint32_t rmon_t_p_gte2048; /* MBAR_ETH + 0x240 */
uint32_t rmon_t_octets; /* MBAR_ETH + 0x244 */
uint32_t ieee_t_drop; /* MBAR_ETH + 0x248 */
uint32_t ieee_t_frame_ok; /* MBAR_ETH + 0x24C */
uint32_t ieee_t_1col; /* MBAR_ETH + 0x250 */
uint32_t ieee_t_mcol; /* MBAR_ETH + 0x254 */
uint32_t ieee_t_def; /* MBAR_ETH + 0x258 */
uint32_t ieee_t_lcol; /* MBAR_ETH + 0x25C */
uint32_t ieee_t_excol; /* MBAR_ETH + 0x260 */
uint32_t ieee_t_macerr; /* MBAR_ETH + 0x264 */
uint32_t ieee_t_cserr; /* MBAR_ETH + 0x268 */
uint32_t ieee_t_sqe; /* MBAR_ETH + 0x26C */
uint32_t t_fdxfc; /* MBAR_ETH + 0x270 */
uint32_t ieee_t_octets_ok; /* MBAR_ETH + 0x274 */
uint32_t res13[2]; /* MBAR_ETH + 0x278-27C */
uint32_t rmon_r_drop; /* MBAR_ETH + 0x280 */
uint32_t rmon_r_packets; /* MBAR_ETH + 0x284 */
uint32_t rmon_r_bc_pkt; /* MBAR_ETH + 0x288 */
uint32_t rmon_r_mc_pkt; /* MBAR_ETH + 0x28C */
uint32_t rmon_r_crc_align; /* MBAR_ETH + 0x290 */
uint32_t rmon_r_undersize; /* MBAR_ETH + 0x294 */
uint32_t rmon_r_oversize; /* MBAR_ETH + 0x298 */
uint32_t rmon_r_frag; /* MBAR_ETH + 0x29C */
uint32_t rmon_r_jab; /* MBAR_ETH + 0x2A0 */
uint32_t rmon_r_resvd_0; /* MBAR_ETH + 0x2A4 */
uint32_t rmon_r_p64; /* MBAR_ETH + 0x2A8 */
uint32_t rmon_r_p65to127; /* MBAR_ETH + 0x2AC */
uint32_t rmon_r_p128to255; /* MBAR_ETH + 0x2B0 */
uint32_t rmon_r_p256to511; /* MBAR_ETH + 0x2B4 */
uint32_t rmon_r_p512to1023; /* MBAR_ETH + 0x2B8 */
uint32_t rmon_r_p1024to2047; /* MBAR_ETH + 0x2BC */
uint32_t rmon_r_p_gte2048; /* MBAR_ETH + 0x2C0 */
uint32_t rmon_r_octets; /* MBAR_ETH + 0x2C4 */
uint32_t ieee_r_drop; /* MBAR_ETH + 0x2C8 */
uint32_t ieee_r_frame_ok; /* MBAR_ETH + 0x2CC */
uint32_t ieee_r_crc; /* MBAR_ETH + 0x2D0 */
uint32_t ieee_r_align; /* MBAR_ETH + 0x2D4 */
uint32_t r_macerr; /* MBAR_ETH + 0x2D8 */
uint32_t r_fdxfc; /* MBAR_ETH + 0x2DC */
uint32_t ieee_r_octets_ok; /* MBAR_ETH + 0x2E0 */
uint32_t res14[7]; /* MBAR_ETH + 0x2E4-2FC */
#ifdef CONFIG_MX25
uint16_t miigsk_cfgr; /* MBAR_ETH + 0x300 */
uint16_t res15[3]; /* MBAR_ETH + 0x302-306 */
uint16_t miigsk_enr; /* MBAR_ETH + 0x308 */
uint16_t res16[3]; /* MBAR_ETH + 0x30a-30e */
uint32_t res17[60]; /* MBAR_ETH + 0x300-3FF */
#else
uint32_t res15[64]; /* MBAR_ETH + 0x300-3FF */
#endif
};
#define FEC_IEVENT_HBERR 0x80000000
#define FEC_IEVENT_BABR 0x40000000
#define FEC_IEVENT_BABT 0x20000000
#define FEC_IEVENT_GRA 0x10000000
#define FEC_IEVENT_TXF 0x08000000
#define FEC_IEVENT_TXB 0x04000000
#define FEC_IEVENT_RXF 0x02000000
#define FEC_IEVENT_RXB 0x01000000
#define FEC_IEVENT_MII 0x00800000
#define FEC_IEVENT_EBERR 0x00400000
#define FEC_IEVENT_LC 0x00200000
#define FEC_IEVENT_RL 0x00100000
#define FEC_IEVENT_UN 0x00080000
#define FEC_IMASK_HBERR 0x80000000
#define FEC_IMASK_BABR 0x40000000
#define FEC_IMASKT_BABT 0x20000000
#define FEC_IMASK_GRA 0x10000000
#define FEC_IMASKT_TXF 0x08000000
#define FEC_IMASK_TXB 0x04000000
#define FEC_IMASKT_RXF 0x02000000
#define FEC_IMASK_RXB 0x01000000
#define FEC_IMASK_MII 0x00800000
#define FEC_IMASK_EBERR 0x00400000
#define FEC_IMASK_LC 0x00200000
#define FEC_IMASKT_RL 0x00100000
#define FEC_IMASK_UN 0x00080000
#define FEC_RCNTRL_MAX_FL_SHIFT 16
#define FEC_RCNTRL_LOOP 0x00000001
#define FEC_RCNTRL_DRT 0x00000002
#define FEC_RCNTRL_MII_MODE 0x00000004
#define FEC_RCNTRL_PROM 0x00000008
#define FEC_RCNTRL_BC_REJ 0x00000010
#define FEC_RCNTRL_FCE 0x00000020
#define FEC_TCNTRL_GTS 0x00000001
#define FEC_TCNTRL_HBC 0x00000002
#define FEC_TCNTRL_FDEN 0x00000004
#define FEC_TCNTRL_TFC_PAUSE 0x00000008
#define FEC_TCNTRL_RFC_PAUSE 0x00000010
#define FEC_ECNTRL_RESET 0x00000001 /* reset the FEC */
#define FEC_ECNTRL_ETHER_EN 0x00000002 /* enable the FEC */
#ifdef CONFIG_MX25
/* defines for MIIGSK */
/* RMII frequency control: 0=50MHz, 1=5MHz */
#define MIIGSK_CFGR_FRCONT (1 << 6)
/* loopback mode */
#define MIIGSK_CFGR_LBMODE (1 << 4)
/* echo mode */
#define MIIGSK_CFGR_EMODE (1 << 3)
/* MII gasket mode field */
#define MIIGSK_CFGR_IF_MODE_MASK (3 << 0)
/* MMI/7-Wire mode */
#define MIIGSK_CFGR_IF_MODE_MII (0 << 0)
/* RMII mode */
#define MIIGSK_CFGR_IF_MODE_RMII (1 << 0)
/* reflects MIIGSK Enable bit (RO) */
#define MIIGSK_ENR_READY (1 << 2)
/* enable MIGSK (set by default) */
#define MIIGSK_ENR_EN (1 << 1)
#endif
/**
* @brief Descriptor buffer alignment
*
* i.MX27 requires a 16 byte alignment (but for the first element only)
*/
#define DB_ALIGNMENT 16
/**
* @brief Data buffer alignment
*
* i.MX27 requires a four byte alignment for transmit and 16 bits
* alignment for receive so take 16
* Note: Valid for member data_pointer in struct buffer_descriptor
*/
#define DB_DATA_ALIGNMENT 16
/**
* @brief Receive & Transmit Buffer Descriptor definitions
*
* Note: The first BD must be aligned (see DB_ALIGNMENT)
*/
struct fec_bd {
uint16_t data_length; /* payload's length in bytes */
uint16_t status; /* BD's staus (see datasheet) */
uint32_t data_pointer; /* payload's buffer address */
};
/**
* Supported phy types on this platform
*/
enum xceiver_type {
SEVENWIRE, /* 7-wire */
MII10, /* MII 10Mbps */
MII100 /* MII 100Mbps */
};
/**
* @brief i.MX27-FEC private structure
*/
struct fec_priv {
struct ethernet_regs *eth; /* pointer to register'S base */
enum xceiver_type xcv_type; /* transceiver type */
struct fec_bd *rbd_base; /* RBD ring */
int rbd_index; /* next receive BD to read */
struct fec_bd *tbd_base; /* TBD ring */
int tbd_index; /* next transmit BD to write */
bd_t *bd;
void *rdb_ptr;
void *base_ptr;
};
/**
* @brief Numbers of buffer descriptors for receiving
*
* The number defines the stocked memory buffers for the receiving task.
* Larger values makes no sense in this limited environment.
*/
#define FEC_RBD_NUM 64
/**
* @brief Define the ethernet packet size limit in memory
*
* Note: Do not shrink this number. This will force the FEC to spread larger
* frames in more than one BD. This is nothing to worry about, but the current
* driver can't handle it.
*/
#define FEC_MAX_PKT_SIZE 1536
/* Receive BD status bits */
#define FEC_RBD_EMPTY 0x8000 /* Receive BD status: Buffer is empty */
#define FEC_RBD_WRAP 0x2000 /* Receive BD status: Last BD in ring */
/* Receive BD status: Buffer is last in frame (useless here!) */
#define FEC_RBD_LAST 0x0800
#define FEC_RBD_MISS 0x0100 /* Receive BD status: Miss bit for prom mode */
/* Receive BD status: The received frame is broadcast frame */
#define FEC_RBD_BC 0x0080
/* Receive BD status: The received frame is multicast frame */
#define FEC_RBD_MC 0x0040
#define FEC_RBD_LG 0x0020 /* Receive BD status: Frame length violation */
#define FEC_RBD_NO 0x0010 /* Receive BD status: Nonoctet align frame */
#define FEC_RBD_CR 0x0004 /* Receive BD status: CRC error */
#define FEC_RBD_OV 0x0002 /* Receive BD status: Receive FIFO overrun */
#define FEC_RBD_TR 0x0001 /* Receive BD status: Frame is truncated */
#define FEC_RBD_ERR (FEC_RBD_LG | FEC_RBD_NO | FEC_RBD_CR | \
FEC_RBD_OV | FEC_RBD_TR)
/* Transmit BD status bits */
#define FEC_TBD_READY 0x8000 /* Tansmit BD status: Buffer is ready */
#define FEC_TBD_WRAP 0x2000 /* Tansmit BD status: Mark as last BD in ring */
#define FEC_TBD_LAST 0x0800 /* Tansmit BD status: Buffer is last in frame */
#define FEC_TBD_TC 0x0400 /* Tansmit BD status: Transmit the CRC */
#define FEC_TBD_ABC 0x0200 /* Tansmit BD status: Append bad CRC */
/* MII-related definitios */
#define FEC_MII_DATA_ST 0x40000000 /* Start of frame delimiter */
#define FEC_MII_DATA_OP_RD 0x20000000 /* Perform a read operation */
#define FEC_MII_DATA_OP_WR 0x10000000 /* Perform a write operation */
#define FEC_MII_DATA_PA_MSK 0x0f800000 /* PHY Address field mask */
#define FEC_MII_DATA_RA_MSK 0x007c0000 /* PHY Register field mask */
#define FEC_MII_DATA_TA 0x00020000 /* Turnaround */
#define FEC_MII_DATA_DATAMSK 0x0000ffff /* PHY data field */
#define FEC_MII_DATA_RA_SHIFT 18 /* MII Register address bits */
#define FEC_MII_DATA_PA_SHIFT 23 /* MII PHY address bits */
#endif /* __FEC_MXC_H */
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