From 111fd19e3b9eb1005fd24ef09c163dd10103f5fa Mon Sep 17 00:00:00 2001 From: Roy Zang Date: Mon, 8 Oct 2012 07:44:21 +0000 Subject: fm/mEMAC: add mEMAC frame work The multirate ethernet media access controller (mEMAC) interfaces to 10Gbps and below Ethernet/IEEE 802.3 networks via either RGMII/RMII interfaces or XAUI/XFI/SGMII/QSGMII using the high-speed SerDes interface. Signed-off-by: Sandeep Singh Signed-off-by: Poonam Aggrwal Signed-off-by: Roy Zang Signed-off-by: Andy Fleming --- drivers/net/fm/memac.c | 132 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 drivers/net/fm/memac.c (limited to 'drivers/net/fm/memac.c') diff --git a/drivers/net/fm/memac.c b/drivers/net/fm/memac.c new file mode 100644 index 0000000000..32c7054e35 --- /dev/null +++ b/drivers/net/fm/memac.c @@ -0,0 +1,132 @@ +/* + * Copyright 2012 Freescale Semiconductor, Inc. + * Roy Zang + * + * 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 + */ + +/* MAXFRM - maximum frame length */ +#define MAXFRM_MASK 0x0000ffff + +#include +#include +#include +#include +#include +#include + +#include "fm.h" + +static void memac_init_mac(struct fsl_enet_mac *mac) +{ + struct memac *regs = mac->base; + + /* mask all interrupt */ + out_be32(®s->imask, IMASK_MASK_ALL); + + /* clear all events */ + out_be32(®s->ievent, IEVENT_CLEAR_ALL); + + /* set the max receive length */ + out_be32(®s->maxfrm, mac->max_rx_len & MAXFRM_MASK); + + /* multicast frame reception for the hash entry disable */ + out_be32(®s->hashtable_ctrl, 0); +} + +static void memac_enable_mac(struct fsl_enet_mac *mac) +{ + struct memac *regs = mac->base; + + setbits_be32(®s->command_config, MEMAC_CMD_CFG_RXTX_EN); +} + +static void memac_disable_mac(struct fsl_enet_mac *mac) +{ + struct memac *regs = mac->base; + + clrbits_be32(®s->command_config, MEMAC_CMD_CFG_RXTX_EN); +} + +static void memac_set_mac_addr(struct fsl_enet_mac *mac, u8 *mac_addr) +{ + struct memac *regs = mac->base; + u32 mac_addr0, mac_addr1; + + /* + * if a station address of 0x12345678ABCD, perform a write to + * MAC_ADDR0 of 0x78563412, MAC_ADDR1 of 0x0000CDAB + */ + mac_addr0 = (mac_addr[3] << 24) | (mac_addr[2] << 16) | \ + (mac_addr[1] << 8) | (mac_addr[0]); + out_be32(®s->mac_addr_0, mac_addr0); + + mac_addr1 = ((mac_addr[5] << 8) | mac_addr[4]) & 0x0000ffff; + out_be32(®s->mac_addr_1, mac_addr1); +} + +static void memac_set_interface_mode(struct fsl_enet_mac *mac, + phy_interface_t type, int speed) +{ + /* Roy need more work here */ + + struct memac *regs = mac->base; + u32 if_mode, if_status; + + /* clear all bits relative with interface mode */ + if_mode = in_be32(®s->if_mode); + if_status = in_be32(®s->if_status); + + /* set interface mode */ + switch (type) { + case PHY_INTERFACE_MODE_GMII: + if_mode &= ~IF_MODE_MASK; + if_mode |= IF_MODE_GMII; + break; + case PHY_INTERFACE_MODE_RGMII: + if_mode |= (IF_MODE_GMII | IF_MODE_RG); + break; + case PHY_INTERFACE_MODE_RMII: + if_mode |= (IF_MODE_GMII | IF_MODE_RM); + break; + case PHY_INTERFACE_MODE_SGMII: + if_mode &= ~IF_MODE_MASK; + if_mode |= (IF_MODE_GMII); + break; + default: + break; + } + /* Enable automatic speed selection */ + if_mode |= IF_MODE_EN_AUTO; + + debug(" %s, if_mode = %x\n", __func__, if_mode); + debug(" %s, if_status = %x\n", __func__, if_status); + out_be32(®s->if_mode, if_mode); + return; +} + +void init_memac(struct fsl_enet_mac *mac, void *base, + void *phyregs, int max_rx_len) +{ + mac->base = base; + mac->phyregs = phyregs; + mac->max_rx_len = max_rx_len; + mac->init_mac = memac_init_mac; + mac->enable_mac = memac_enable_mac; + mac->disable_mac = memac_disable_mac; + mac->set_mac_addr = memac_set_mac_addr; + mac->set_if_mode = memac_set_interface_mode; +} -- cgit v1.2.1