drivers/net/fm/tgec.c

   1 /*
   2  * Copyright 2009-2011 Freescale Semiconductor, Inc.
   3  *      Dave Liu <daveliu@freescale.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 /* MAXFRM - maximum frame length */
   9 #define MAXFRM_MASK     0x0000ffff
  10
  11 #include <common.h>
  12 #include <phy.h>
  13 #include <asm/types.h>
  14 #include <asm/io.h>
  15 #include <fsl_tgec.h>
  16
  17 #include "fm.h"
  18
  19 #define TGEC_CMD_CFG_INIT       (TGEC_CMD_CFG_NO_LEN_CHK | \
  20                                  TGEC_CMD_CFG_RX_ER_DISC | \
  21                                  TGEC_CMD_CFG_STAT_CLR | \
  22                                  TGEC_CMD_CFG_PAUSE_IGNORE | \
  23                                  TGEC_CMD_CFG_CRC_FWD)
  24 #define TGEC_CMD_CFG_FINAL      (TGEC_CMD_CFG_NO_LEN_CHK | \
  25                                  TGEC_CMD_CFG_RX_ER_DISC | \
  26                                  TGEC_CMD_CFG_PAUSE_IGNORE | \
  27                                  TGEC_CMD_CFG_CRC_FWD)
  28
  29 static void tgec_init_mac(struct fsl_enet_mac *mac)
  30 {
  31         struct tgec *regs = mac->base;
  32
  33         /* mask all interrupt */
  34         out_be32(&regs->imask, IMASK_MASK_ALL);
  35
  36         /* clear all events */
  37         out_be32(&regs->ievent, IEVENT_CLEAR_ALL);
  38
  39         /* set the max receive length */
  40         out_be32(&regs->maxfrm, mac->max_rx_len & MAXFRM_MASK);
  41
  42         /*
  43          * 1588 disable, insert second mac disable payload length check
  44          * disable, normal operation, any rx error frame is discarded, clear
  45          * counters, pause frame ignore, no promiscuous, LAN mode Rx CRC no
  46          * strip, Tx CRC append, Rx disable and Tx disable
  47          */
  48         out_be32(&regs->command_config, TGEC_CMD_CFG_INIT);
  49         udelay(1000);
  50         out_be32(&regs->command_config, TGEC_CMD_CFG_FINAL);
  51
  52         /* multicast frame reception for the hash entry disable */
  53         out_be32(&regs->hashtable_ctrl, 0);
  54 }
  55
  56 static void tgec_enable_mac(struct fsl_enet_mac *mac)
  57 {
  58         struct tgec *regs = mac->base;
  59
  60         setbits_be32(&regs->command_config, TGEC_CMD_CFG_RXTX_EN);
  61 }
  62
  63 static void tgec_disable_mac(struct fsl_enet_mac *mac)
  64 {
  65         struct tgec *regs = mac->base;
  66
  67         clrbits_be32(&regs->command_config, TGEC_CMD_CFG_RXTX_EN);
  68 }
  69
  70 static void tgec_set_mac_addr(struct fsl_enet_mac *mac, u8 *mac_addr)
  71 {
  72         struct tgec *regs = mac->base;
  73         u32 mac_addr0, mac_addr1;
  74
  75         /*
  76          * if a station address of 0x12345678ABCD, perform a write to
  77          * MAC_ADDR0 of 0x78563412, MAC_ADDR1 of 0x0000CDAB
  78          */
  79         mac_addr0 = (mac_addr[3] << 24) | (mac_addr[2] << 16) | \
  80                         (mac_addr[1] << 8)  | (mac_addr[0]);
  81         out_be32(&regs->mac_addr_0, mac_addr0);
  82
  83         mac_addr1 = ((mac_addr[5] << 8) | mac_addr[4]) & 0x0000ffff;
  84         out_be32(&regs->mac_addr_1, mac_addr1);
  85 }
  86
  87 static void tgec_set_interface_mode(struct fsl_enet_mac *mac,
  88                                         phy_interface_t type, int speed)
  89 {
  90         /* nothing right now */
  91         return;
  92 }
  93
  94 void init_tgec(struct fsl_enet_mac *mac, void *base,
  95                 void *phyregs, int max_rx_len)
  96 {
  97         mac->base = base;
  98         mac->phyregs = phyregs;
  99         mac->max_rx_len = max_rx_len;
 100         mac->init_mac = tgec_init_mac;
 101         mac->enable_mac = tgec_enable_mac;
 102         mac->disable_mac = tgec_disable_mac;
 103         mac->set_mac_addr = tgec_set_mac_addr;
 104         mac->set_if_mode = tgec_set_interface_mode;
 105 }