forked from luck/tmp_suning_uos_patched
073a345c04
Replace the nondescriptive names ETH_INT_UNMASK_ALL and ETH_INT_UNMASK_ALL_EXT by names of the actual fields being masked and unmasked in the various writes to the interrupt mask registers. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Acked-by: Dale Farnsworth <dale@farnsworth.org>
3073 lines
85 KiB
C
3073 lines
85 KiB
C
/*
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* Driver for Marvell Discovery (MV643XX) and Marvell Orion ethernet ports
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* Copyright (C) 2002 Matthew Dharm <mdharm@momenco.com>
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*
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* Based on the 64360 driver from:
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* Copyright (C) 2002 Rabeeh Khoury <rabeeh@galileo.co.il>
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* Rabeeh Khoury <rabeeh@marvell.com>
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*
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* Copyright (C) 2003 PMC-Sierra, Inc.,
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* written by Manish Lachwani
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*
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* Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org>
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*
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* Copyright (C) 2004-2006 MontaVista Software, Inc.
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* Dale Farnsworth <dale@farnsworth.org>
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*
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* Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com>
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* <sjhill@realitydiluted.com>
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*
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* Copyright (C) 2007-2008 Marvell Semiconductor
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* Lennert Buytenhek <buytenh@marvell.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <linux/init.h>
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#include <linux/dma-mapping.h>
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#include <linux/in.h>
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#include <linux/tcp.h>
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#include <linux/udp.h>
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#include <linux/etherdevice.h>
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#include <linux/delay.h>
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#include <linux/ethtool.h>
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#include <linux/platform_device.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/mii.h>
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#include <linux/mv643xx_eth.h>
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#include <asm/io.h>
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#include <asm/types.h>
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#include <asm/system.h>
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static char mv643xx_driver_name[] = "mv643xx_eth";
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static char mv643xx_driver_version[] = "1.0";
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#define MV643XX_CHECKSUM_OFFLOAD_TX
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#define MV643XX_NAPI
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#define MV643XX_TX_FAST_REFILL
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#undef MV643XX_COAL
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#define MV643XX_TX_COAL 100
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#ifdef MV643XX_COAL
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#define MV643XX_RX_COAL 100
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#endif
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#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
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#define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1)
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#else
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#define MAX_DESCS_PER_SKB 1
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#endif
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#define ETH_VLAN_HLEN 4
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#define ETH_FCS_LEN 4
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#define ETH_HW_IP_ALIGN 2 /* hw aligns IP header */
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#define ETH_WRAPPER_LEN (ETH_HW_IP_ALIGN + ETH_HLEN + \
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ETH_VLAN_HLEN + ETH_FCS_LEN)
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#define ETH_RX_SKB_SIZE (dev->mtu + ETH_WRAPPER_LEN + \
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dma_get_cache_alignment())
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/*
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* Registers shared between all ports.
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*/
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#define PHY_ADDR 0x0000
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#define SMI_REG 0x0004
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#define WINDOW_BASE(w) (0x0200 + ((w) << 3))
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#define WINDOW_SIZE(w) (0x0204 + ((w) << 3))
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#define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2))
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#define WINDOW_BAR_ENABLE 0x0290
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#define WINDOW_PROTECT(w) (0x0294 + ((w) << 4))
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/*
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* Per-port registers.
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*/
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#define PORT_CONFIG(p) (0x0400 + ((p) << 10))
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#define UNICAST_PROMISCUOUS_MODE 0x00000001
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#define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10))
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#define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10))
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#define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10))
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#define SDMA_CONFIG(p) (0x041c + ((p) << 10))
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#define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10))
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#define PORT_STATUS(p) (0x0444 + ((p) << 10))
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#define TXQ_COMMAND(p) (0x0448 + ((p) << 10))
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#define TX_BW_MTU(p) (0x0458 + ((p) << 10))
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#define INT_CAUSE(p) (0x0460 + ((p) << 10))
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#define INT_RX 0x00000804
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#define INT_EXT 0x00000002
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#define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10))
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#define INT_EXT_LINK 0x00100000
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#define INT_EXT_PHY 0x00010000
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#define INT_EXT_TX_ERROR_0 0x00000100
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#define INT_EXT_TX_0 0x00000001
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#define INT_EXT_TX 0x00000101
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#define INT_MASK(p) (0x0468 + ((p) << 10))
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#define INT_MASK_EXT(p) (0x046c + ((p) << 10))
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#define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10))
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#define RXQ_CURRENT_DESC_PTR(p) (0x060c + ((p) << 10))
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#define RXQ_COMMAND(p) (0x0680 + ((p) << 10))
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#define TXQ_CURRENT_DESC_PTR(p) (0x06c0 + ((p) << 10))
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#define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
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#define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
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#define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
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#define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
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/*
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* SDMA configuration register.
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*/
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#define RX_BURST_SIZE_4_64BIT (2 << 1)
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#define BLM_RX_NO_SWAP (1 << 4)
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#define BLM_TX_NO_SWAP (1 << 5)
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#define TX_BURST_SIZE_4_64BIT (2 << 22)
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#if defined(__BIG_ENDIAN)
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#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
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RX_BURST_SIZE_4_64BIT | \
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TX_BURST_SIZE_4_64BIT
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#elif defined(__LITTLE_ENDIAN)
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#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
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RX_BURST_SIZE_4_64BIT | \
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BLM_RX_NO_SWAP | \
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BLM_TX_NO_SWAP | \
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TX_BURST_SIZE_4_64BIT
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#else
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#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
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#endif
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/*
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* Port serial control register.
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*/
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#define SET_MII_SPEED_TO_100 (1 << 24)
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#define SET_GMII_SPEED_TO_1000 (1 << 23)
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#define SET_FULL_DUPLEX_MODE (1 << 21)
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#define MAX_RX_PACKET_1522BYTE (1 << 17)
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#define MAX_RX_PACKET_9700BYTE (5 << 17)
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#define MAX_RX_PACKET_MASK (7 << 17)
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#define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
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#define DO_NOT_FORCE_LINK_FAIL (1 << 10)
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#define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
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#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
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#define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2)
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#define FORCE_LINK_PASS (1 << 1)
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#define SERIAL_PORT_ENABLE (1 << 0)
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#define PORT_DEFAULT_TRANSMIT_QUEUE_SIZE 800
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#define PORT_DEFAULT_RECEIVE_QUEUE_SIZE 400
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#define PHY_WAIT_ITERATIONS 1000 /* 1000 iterations * 10uS = 10mS max */
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#define PHY_WAIT_MICRO_SECONDS 10
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/* Buffer offset from buffer pointer */
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#define RX_BUF_OFFSET 0x2
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/* Gigabit Ethernet Unit Global Registers */
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/* MIB Counters register definitions */
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#define ETH_MIB_GOOD_OCTETS_RECEIVED_LOW 0x0
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#define ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH 0x4
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#define ETH_MIB_BAD_OCTETS_RECEIVED 0x8
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#define ETH_MIB_INTERNAL_MAC_TRANSMIT_ERR 0xc
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#define ETH_MIB_GOOD_FRAMES_RECEIVED 0x10
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#define ETH_MIB_BAD_FRAMES_RECEIVED 0x14
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#define ETH_MIB_BROADCAST_FRAMES_RECEIVED 0x18
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#define ETH_MIB_MULTICAST_FRAMES_RECEIVED 0x1c
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#define ETH_MIB_FRAMES_64_OCTETS 0x20
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#define ETH_MIB_FRAMES_65_TO_127_OCTETS 0x24
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#define ETH_MIB_FRAMES_128_TO_255_OCTETS 0x28
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#define ETH_MIB_FRAMES_256_TO_511_OCTETS 0x2c
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#define ETH_MIB_FRAMES_512_TO_1023_OCTETS 0x30
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#define ETH_MIB_FRAMES_1024_TO_MAX_OCTETS 0x34
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#define ETH_MIB_GOOD_OCTETS_SENT_LOW 0x38
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#define ETH_MIB_GOOD_OCTETS_SENT_HIGH 0x3c
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#define ETH_MIB_GOOD_FRAMES_SENT 0x40
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#define ETH_MIB_EXCESSIVE_COLLISION 0x44
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#define ETH_MIB_MULTICAST_FRAMES_SENT 0x48
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#define ETH_MIB_BROADCAST_FRAMES_SENT 0x4c
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#define ETH_MIB_UNREC_MAC_CONTROL_RECEIVED 0x50
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#define ETH_MIB_FC_SENT 0x54
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#define ETH_MIB_GOOD_FC_RECEIVED 0x58
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#define ETH_MIB_BAD_FC_RECEIVED 0x5c
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#define ETH_MIB_UNDERSIZE_RECEIVED 0x60
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#define ETH_MIB_FRAGMENTS_RECEIVED 0x64
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#define ETH_MIB_OVERSIZE_RECEIVED 0x68
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#define ETH_MIB_JABBER_RECEIVED 0x6c
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#define ETH_MIB_MAC_RECEIVE_ERROR 0x70
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#define ETH_MIB_BAD_CRC_EVENT 0x74
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#define ETH_MIB_COLLISION 0x78
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#define ETH_MIB_LATE_COLLISION 0x7c
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/* Port serial status reg (PSR) */
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#define ETH_INTERFACE_PCM 0x00000001
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#define ETH_LINK_IS_UP 0x00000002
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#define ETH_PORT_AT_FULL_DUPLEX 0x00000004
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#define ETH_RX_FLOW_CTRL_ENABLED 0x00000008
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#define ETH_GMII_SPEED_1000 0x00000010
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#define ETH_MII_SPEED_100 0x00000020
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#define ETH_TX_IN_PROGRESS 0x00000080
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#define ETH_BYPASS_ACTIVE 0x00000100
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#define ETH_PORT_AT_PARTITION_STATE 0x00000200
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#define ETH_PORT_TX_FIFO_EMPTY 0x00000400
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/* SMI reg */
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#define ETH_SMI_BUSY 0x10000000 /* 0 - Write, 1 - Read */
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#define ETH_SMI_READ_VALID 0x08000000 /* 0 - Write, 1 - Read */
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#define ETH_SMI_OPCODE_WRITE 0 /* Completion of Read */
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#define ETH_SMI_OPCODE_READ 0x04000000 /* Operation is in progress */
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/* Interrupt Cause Register Bit Definitions */
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/* SDMA command status fields macros */
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/* Tx & Rx descriptors status */
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#define ETH_ERROR_SUMMARY 0x00000001
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/* Tx & Rx descriptors command */
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#define ETH_BUFFER_OWNED_BY_DMA 0x80000000
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/* Tx descriptors status */
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#define ETH_LC_ERROR 0
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#define ETH_UR_ERROR 0x00000002
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#define ETH_RL_ERROR 0x00000004
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#define ETH_LLC_SNAP_FORMAT 0x00000200
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/* Rx descriptors status */
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#define ETH_OVERRUN_ERROR 0x00000002
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#define ETH_MAX_FRAME_LENGTH_ERROR 0x00000004
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#define ETH_RESOURCE_ERROR 0x00000006
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#define ETH_VLAN_TAGGED 0x00080000
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#define ETH_BPDU_FRAME 0x00100000
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#define ETH_UDP_FRAME_OVER_IP_V_4 0x00200000
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#define ETH_OTHER_FRAME_TYPE 0x00400000
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#define ETH_LAYER_2_IS_ETH_V_2 0x00800000
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#define ETH_FRAME_TYPE_IP_V_4 0x01000000
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#define ETH_FRAME_HEADER_OK 0x02000000
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#define ETH_RX_LAST_DESC 0x04000000
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#define ETH_RX_FIRST_DESC 0x08000000
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#define ETH_UNKNOWN_DESTINATION_ADDR 0x10000000
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#define ETH_RX_ENABLE_INTERRUPT 0x20000000
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#define ETH_LAYER_4_CHECKSUM_OK 0x40000000
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/* Rx descriptors byte count */
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#define ETH_FRAME_FRAGMENTED 0x00000004
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/* Tx descriptors command */
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#define ETH_LAYER_4_CHECKSUM_FIRST_DESC 0x00000400
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#define ETH_FRAME_SET_TO_VLAN 0x00008000
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#define ETH_UDP_FRAME 0x00010000
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#define ETH_GEN_TCP_UDP_CHECKSUM 0x00020000
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#define ETH_GEN_IP_V_4_CHECKSUM 0x00040000
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#define ETH_ZERO_PADDING 0x00080000
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#define ETH_TX_LAST_DESC 0x00100000
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#define ETH_TX_FIRST_DESC 0x00200000
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#define ETH_GEN_CRC 0x00400000
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#define ETH_TX_ENABLE_INTERRUPT 0x00800000
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#define ETH_AUTO_MODE 0x40000000
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#define ETH_TX_IHL_SHIFT 11
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/* typedefs */
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typedef enum _eth_func_ret_status {
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ETH_OK, /* Returned as expected. */
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ETH_ERROR, /* Fundamental error. */
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ETH_RETRY, /* Could not process request. Try later.*/
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ETH_END_OF_JOB, /* Ring has nothing to process. */
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ETH_QUEUE_FULL, /* Ring resource error. */
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ETH_QUEUE_LAST_RESOURCE /* Ring resources about to exhaust. */
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} ETH_FUNC_RET_STATUS;
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/* These are for big-endian machines. Little endian needs different
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* definitions.
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*/
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#if defined(__BIG_ENDIAN)
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struct eth_rx_desc {
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u16 byte_cnt; /* Descriptor buffer byte count */
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u16 buf_size; /* Buffer size */
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u32 cmd_sts; /* Descriptor command status */
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u32 next_desc_ptr; /* Next descriptor pointer */
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u32 buf_ptr; /* Descriptor buffer pointer */
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};
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struct eth_tx_desc {
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u16 byte_cnt; /* buffer byte count */
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u16 l4i_chk; /* CPU provided TCP checksum */
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u32 cmd_sts; /* Command/status field */
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u32 next_desc_ptr; /* Pointer to next descriptor */
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u32 buf_ptr; /* pointer to buffer for this descriptor*/
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};
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#elif defined(__LITTLE_ENDIAN)
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struct eth_rx_desc {
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u32 cmd_sts; /* Descriptor command status */
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u16 buf_size; /* Buffer size */
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u16 byte_cnt; /* Descriptor buffer byte count */
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u32 buf_ptr; /* Descriptor buffer pointer */
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u32 next_desc_ptr; /* Next descriptor pointer */
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};
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struct eth_tx_desc {
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u32 cmd_sts; /* Command/status field */
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u16 l4i_chk; /* CPU provided TCP checksum */
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u16 byte_cnt; /* buffer byte count */
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u32 buf_ptr; /* pointer to buffer for this descriptor*/
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u32 next_desc_ptr; /* Pointer to next descriptor */
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};
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#else
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#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
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#endif
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/* Unified struct for Rx and Tx operations. The user is not required to */
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/* be familier with neither Tx nor Rx descriptors. */
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struct pkt_info {
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unsigned short byte_cnt; /* Descriptor buffer byte count */
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unsigned short l4i_chk; /* Tx CPU provided TCP Checksum */
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unsigned int cmd_sts; /* Descriptor command status */
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dma_addr_t buf_ptr; /* Descriptor buffer pointer */
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struct sk_buff *return_info; /* User resource return information */
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};
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/* global *******************************************************************/
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struct mv643xx_shared_private {
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void __iomem *eth_base;
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/* used to protect SMI_REG, which is shared across ports */
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spinlock_t phy_lock;
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u32 win_protect;
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unsigned int t_clk;
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};
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/* per-port *****************************************************************/
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struct mv643xx_mib_counters {
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u64 good_octets_received;
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u32 bad_octets_received;
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u32 internal_mac_transmit_err;
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u32 good_frames_received;
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u32 bad_frames_received;
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u32 broadcast_frames_received;
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u32 multicast_frames_received;
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u32 frames_64_octets;
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u32 frames_65_to_127_octets;
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u32 frames_128_to_255_octets;
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u32 frames_256_to_511_octets;
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u32 frames_512_to_1023_octets;
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u32 frames_1024_to_max_octets;
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u64 good_octets_sent;
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u32 good_frames_sent;
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u32 excessive_collision;
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u32 multicast_frames_sent;
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u32 broadcast_frames_sent;
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u32 unrec_mac_control_received;
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u32 fc_sent;
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u32 good_fc_received;
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u32 bad_fc_received;
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u32 undersize_received;
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u32 fragments_received;
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u32 oversize_received;
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u32 jabber_received;
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u32 mac_receive_error;
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u32 bad_crc_event;
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u32 collision;
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u32 late_collision;
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};
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struct mv643xx_private {
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struct mv643xx_shared_private *shared;
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int port_num; /* User Ethernet port number */
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struct mv643xx_shared_private *shared_smi;
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u32 rx_sram_addr; /* Base address of rx sram area */
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u32 rx_sram_size; /* Size of rx sram area */
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u32 tx_sram_addr; /* Base address of tx sram area */
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u32 tx_sram_size; /* Size of tx sram area */
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int rx_resource_err; /* Rx ring resource error flag */
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/* Tx/Rx rings managment indexes fields. For driver use */
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/* Next available and first returning Rx resource */
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int rx_curr_desc_q, rx_used_desc_q;
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/* Next available and first returning Tx resource */
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int tx_curr_desc_q, tx_used_desc_q;
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#ifdef MV643XX_TX_FAST_REFILL
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u32 tx_clean_threshold;
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#endif
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struct eth_rx_desc *p_rx_desc_area;
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dma_addr_t rx_desc_dma;
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int rx_desc_area_size;
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struct sk_buff **rx_skb;
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struct eth_tx_desc *p_tx_desc_area;
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dma_addr_t tx_desc_dma;
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int tx_desc_area_size;
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struct sk_buff **tx_skb;
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struct work_struct tx_timeout_task;
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|
|
|
struct net_device *dev;
|
|
struct napi_struct napi;
|
|
struct net_device_stats stats;
|
|
struct mv643xx_mib_counters mib_counters;
|
|
spinlock_t lock;
|
|
/* Size of Tx Ring per queue */
|
|
int tx_ring_size;
|
|
/* Number of tx descriptors in use */
|
|
int tx_desc_count;
|
|
/* Size of Rx Ring per queue */
|
|
int rx_ring_size;
|
|
/* Number of rx descriptors in use */
|
|
int rx_desc_count;
|
|
|
|
/*
|
|
* Used in case RX Ring is empty, which can be caused when
|
|
* system does not have resources (skb's)
|
|
*/
|
|
struct timer_list timeout;
|
|
|
|
u32 rx_int_coal;
|
|
u32 tx_int_coal;
|
|
struct mii_if_info mii;
|
|
};
|
|
|
|
|
|
/* port register accessors **************************************************/
|
|
static inline u32 rdl(struct mv643xx_private *mp, int offset)
|
|
{
|
|
return readl(mp->shared->eth_base + offset);
|
|
}
|
|
|
|
static inline void wrl(struct mv643xx_private *mp, int offset, u32 data)
|
|
{
|
|
writel(data, mp->shared->eth_base + offset);
|
|
}
|
|
|
|
|
|
/* rxq/txq helper functions *************************************************/
|
|
static void mv643xx_eth_port_enable_rx(struct mv643xx_private *mp,
|
|
unsigned int queues)
|
|
{
|
|
wrl(mp, RXQ_COMMAND(mp->port_num), queues);
|
|
}
|
|
|
|
static unsigned int mv643xx_eth_port_disable_rx(struct mv643xx_private *mp)
|
|
{
|
|
unsigned int port_num = mp->port_num;
|
|
u32 queues;
|
|
|
|
/* Stop Rx port activity. Check port Rx activity. */
|
|
queues = rdl(mp, RXQ_COMMAND(port_num)) & 0xFF;
|
|
if (queues) {
|
|
/* Issue stop command for active queues only */
|
|
wrl(mp, RXQ_COMMAND(port_num), (queues << 8));
|
|
|
|
/* Wait for all Rx activity to terminate. */
|
|
/* Check port cause register that all Rx queues are stopped */
|
|
while (rdl(mp, RXQ_COMMAND(port_num)) & 0xFF)
|
|
udelay(PHY_WAIT_MICRO_SECONDS);
|
|
}
|
|
|
|
return queues;
|
|
}
|
|
|
|
static void mv643xx_eth_port_enable_tx(struct mv643xx_private *mp,
|
|
unsigned int queues)
|
|
{
|
|
wrl(mp, TXQ_COMMAND(mp->port_num), queues);
|
|
}
|
|
|
|
static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_private *mp)
|
|
{
|
|
unsigned int port_num = mp->port_num;
|
|
u32 queues;
|
|
|
|
/* Stop Tx port activity. Check port Tx activity. */
|
|
queues = rdl(mp, TXQ_COMMAND(port_num)) & 0xFF;
|
|
if (queues) {
|
|
/* Issue stop command for active queues only */
|
|
wrl(mp, TXQ_COMMAND(port_num), (queues << 8));
|
|
|
|
/* Wait for all Tx activity to terminate. */
|
|
/* Check port cause register that all Tx queues are stopped */
|
|
while (rdl(mp, TXQ_COMMAND(port_num)) & 0xFF)
|
|
udelay(PHY_WAIT_MICRO_SECONDS);
|
|
|
|
/* Wait for Tx FIFO to empty */
|
|
while (rdl(mp, PORT_STATUS(port_num)) & ETH_PORT_TX_FIFO_EMPTY)
|
|
udelay(PHY_WAIT_MICRO_SECONDS);
|
|
}
|
|
|
|
return queues;
|
|
}
|
|
|
|
|
|
/* rx ***********************************************************************/
|
|
static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev);
|
|
|
|
/*
|
|
* eth_rx_return_buff - Returns a Rx buffer back to the Rx ring.
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine returns a Rx buffer back to the Rx ring. It retrieves the
|
|
* next 'used' descriptor and attached the returned buffer to it.
|
|
* In case the Rx ring was in "resource error" condition, where there are
|
|
* no available Rx resources, the function resets the resource error flag.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port Control srtuct.
|
|
* struct pkt_info *p_pkt_info Information on returned buffer.
|
|
*
|
|
* OUTPUT:
|
|
* New available Rx resource in Rx descriptor ring.
|
|
*
|
|
* RETURN:
|
|
* ETH_ERROR in case the routine can not access Rx desc ring.
|
|
* ETH_OK otherwise.
|
|
*/
|
|
static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
|
|
struct pkt_info *p_pkt_info)
|
|
{
|
|
int used_rx_desc; /* Where to return Rx resource */
|
|
volatile struct eth_rx_desc *p_used_rx_desc;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&mp->lock, flags);
|
|
|
|
/* Get 'used' Rx descriptor */
|
|
used_rx_desc = mp->rx_used_desc_q;
|
|
p_used_rx_desc = &mp->p_rx_desc_area[used_rx_desc];
|
|
|
|
p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr;
|
|
p_used_rx_desc->buf_size = p_pkt_info->byte_cnt;
|
|
mp->rx_skb[used_rx_desc] = p_pkt_info->return_info;
|
|
|
|
/* Flush the write pipe */
|
|
|
|
/* Return the descriptor to DMA ownership */
|
|
wmb();
|
|
p_used_rx_desc->cmd_sts =
|
|
ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
|
|
wmb();
|
|
|
|
/* Move the used descriptor pointer to the next descriptor */
|
|
mp->rx_used_desc_q = (used_rx_desc + 1) % mp->rx_ring_size;
|
|
|
|
/* Any Rx return cancels the Rx resource error status */
|
|
mp->rx_resource_err = 0;
|
|
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
|
|
return ETH_OK;
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_rx_refill_descs
|
|
*
|
|
* Fills / refills RX queue on a certain gigabit ethernet port
|
|
*
|
|
* Input : pointer to ethernet interface network device structure
|
|
* Output : N/A
|
|
*/
|
|
static void mv643xx_eth_rx_refill_descs(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
struct pkt_info pkt_info;
|
|
struct sk_buff *skb;
|
|
int unaligned;
|
|
|
|
while (mp->rx_desc_count < mp->rx_ring_size) {
|
|
skb = dev_alloc_skb(ETH_RX_SKB_SIZE + dma_get_cache_alignment());
|
|
if (!skb)
|
|
break;
|
|
mp->rx_desc_count++;
|
|
unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
|
|
if (unaligned)
|
|
skb_reserve(skb, dma_get_cache_alignment() - unaligned);
|
|
pkt_info.cmd_sts = ETH_RX_ENABLE_INTERRUPT;
|
|
pkt_info.byte_cnt = ETH_RX_SKB_SIZE;
|
|
pkt_info.buf_ptr = dma_map_single(NULL, skb->data,
|
|
ETH_RX_SKB_SIZE, DMA_FROM_DEVICE);
|
|
pkt_info.return_info = skb;
|
|
if (eth_rx_return_buff(mp, &pkt_info) != ETH_OK) {
|
|
printk(KERN_ERR
|
|
"%s: Error allocating RX Ring\n", dev->name);
|
|
break;
|
|
}
|
|
skb_reserve(skb, ETH_HW_IP_ALIGN);
|
|
}
|
|
/*
|
|
* If RX ring is empty of SKB, set a timer to try allocating
|
|
* again at a later time.
|
|
*/
|
|
if (mp->rx_desc_count == 0) {
|
|
printk(KERN_INFO "%s: Rx ring is empty\n", dev->name);
|
|
mp->timeout.expires = jiffies + (HZ / 10); /* 100 mSec */
|
|
add_timer(&mp->timeout);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_rx_refill_descs_timer_wrapper
|
|
*
|
|
* Timer routine to wake up RX queue filling task. This function is
|
|
* used only in case the RX queue is empty, and all alloc_skb has
|
|
* failed (due to out of memory event).
|
|
*
|
|
* Input : pointer to ethernet interface network device structure
|
|
* Output : N/A
|
|
*/
|
|
static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data)
|
|
{
|
|
mv643xx_eth_rx_refill_descs((struct net_device *)data);
|
|
}
|
|
|
|
/*
|
|
* eth_port_receive - Get received information from Rx ring.
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine returns the received data to the caller. There is no
|
|
* data copying during routine operation. All information is returned
|
|
* using pointer to packet information struct passed from the caller.
|
|
* If the routine exhausts Rx ring resources then the resource error flag
|
|
* is set.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port Control srtuct.
|
|
* struct pkt_info *p_pkt_info User packet buffer.
|
|
*
|
|
* OUTPUT:
|
|
* Rx ring current and used indexes are updated.
|
|
*
|
|
* RETURN:
|
|
* ETH_ERROR in case the routine can not access Rx desc ring.
|
|
* ETH_QUEUE_FULL if Rx ring resources are exhausted.
|
|
* ETH_END_OF_JOB if there is no received data.
|
|
* ETH_OK otherwise.
|
|
*/
|
|
static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
|
|
struct pkt_info *p_pkt_info)
|
|
{
|
|
int rx_next_curr_desc, rx_curr_desc, rx_used_desc;
|
|
volatile struct eth_rx_desc *p_rx_desc;
|
|
unsigned int command_status;
|
|
unsigned long flags;
|
|
|
|
/* Do not process Rx ring in case of Rx ring resource error */
|
|
if (mp->rx_resource_err)
|
|
return ETH_QUEUE_FULL;
|
|
|
|
spin_lock_irqsave(&mp->lock, flags);
|
|
|
|
/* Get the Rx Desc ring 'curr and 'used' indexes */
|
|
rx_curr_desc = mp->rx_curr_desc_q;
|
|
rx_used_desc = mp->rx_used_desc_q;
|
|
|
|
p_rx_desc = &mp->p_rx_desc_area[rx_curr_desc];
|
|
|
|
/* The following parameters are used to save readings from memory */
|
|
command_status = p_rx_desc->cmd_sts;
|
|
rmb();
|
|
|
|
/* Nothing to receive... */
|
|
if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
return ETH_END_OF_JOB;
|
|
}
|
|
|
|
p_pkt_info->byte_cnt = (p_rx_desc->byte_cnt) - RX_BUF_OFFSET;
|
|
p_pkt_info->cmd_sts = command_status;
|
|
p_pkt_info->buf_ptr = (p_rx_desc->buf_ptr) + RX_BUF_OFFSET;
|
|
p_pkt_info->return_info = mp->rx_skb[rx_curr_desc];
|
|
p_pkt_info->l4i_chk = p_rx_desc->buf_size;
|
|
|
|
/*
|
|
* Clean the return info field to indicate that the
|
|
* packet has been moved to the upper layers
|
|
*/
|
|
mp->rx_skb[rx_curr_desc] = NULL;
|
|
|
|
/* Update current index in data structure */
|
|
rx_next_curr_desc = (rx_curr_desc + 1) % mp->rx_ring_size;
|
|
mp->rx_curr_desc_q = rx_next_curr_desc;
|
|
|
|
/* Rx descriptors exhausted. Set the Rx ring resource error flag */
|
|
if (rx_next_curr_desc == rx_used_desc)
|
|
mp->rx_resource_err = 1;
|
|
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
|
|
return ETH_OK;
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_receive
|
|
*
|
|
* This function is forward packets that are received from the port's
|
|
* queues toward kernel core or FastRoute them to another interface.
|
|
*
|
|
* Input : dev - a pointer to the required interface
|
|
* max - maximum number to receive (0 means unlimted)
|
|
*
|
|
* Output : number of served packets
|
|
*/
|
|
static int mv643xx_eth_receive_queue(struct net_device *dev, int budget)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
struct net_device_stats *stats = &dev->stats;
|
|
unsigned int received_packets = 0;
|
|
struct sk_buff *skb;
|
|
struct pkt_info pkt_info;
|
|
|
|
while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) {
|
|
dma_unmap_single(NULL, pkt_info.buf_ptr, ETH_RX_SKB_SIZE,
|
|
DMA_FROM_DEVICE);
|
|
mp->rx_desc_count--;
|
|
received_packets++;
|
|
|
|
/*
|
|
* Update statistics.
|
|
* Note byte count includes 4 byte CRC count
|
|
*/
|
|
stats->rx_packets++;
|
|
stats->rx_bytes += pkt_info.byte_cnt;
|
|
skb = pkt_info.return_info;
|
|
/*
|
|
* In case received a packet without first / last bits on OR
|
|
* the error summary bit is on, the packets needs to be dropeed.
|
|
*/
|
|
if (((pkt_info.cmd_sts
|
|
& (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) !=
|
|
(ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC))
|
|
|| (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)) {
|
|
stats->rx_dropped++;
|
|
if ((pkt_info.cmd_sts & (ETH_RX_FIRST_DESC |
|
|
ETH_RX_LAST_DESC)) !=
|
|
(ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) {
|
|
if (net_ratelimit())
|
|
printk(KERN_ERR
|
|
"%s: Received packet spread "
|
|
"on multiple descriptors\n",
|
|
dev->name);
|
|
}
|
|
if (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)
|
|
stats->rx_errors++;
|
|
|
|
dev_kfree_skb_irq(skb);
|
|
} else {
|
|
/*
|
|
* The -4 is for the CRC in the trailer of the
|
|
* received packet
|
|
*/
|
|
skb_put(skb, pkt_info.byte_cnt - 4);
|
|
|
|
if (pkt_info.cmd_sts & ETH_LAYER_4_CHECKSUM_OK) {
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
skb->csum = htons(
|
|
(pkt_info.cmd_sts & 0x0007fff8) >> 3);
|
|
}
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
#ifdef MV643XX_NAPI
|
|
netif_receive_skb(skb);
|
|
#else
|
|
netif_rx(skb);
|
|
#endif
|
|
}
|
|
dev->last_rx = jiffies;
|
|
}
|
|
mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
|
|
|
|
return received_packets;
|
|
}
|
|
|
|
#ifdef MV643XX_NAPI
|
|
/*
|
|
* mv643xx_poll
|
|
*
|
|
* This function is used in case of NAPI
|
|
*/
|
|
static int mv643xx_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct mv643xx_private *mp = container_of(napi, struct mv643xx_private, napi);
|
|
struct net_device *dev = mp->dev;
|
|
unsigned int port_num = mp->port_num;
|
|
int work_done;
|
|
|
|
#ifdef MV643XX_TX_FAST_REFILL
|
|
if (++mp->tx_clean_threshold > 5) {
|
|
mv643xx_eth_free_completed_tx_descs(dev);
|
|
mp->tx_clean_threshold = 0;
|
|
}
|
|
#endif
|
|
|
|
work_done = 0;
|
|
if ((rdl(mp, RXQ_CURRENT_DESC_PTR(port_num)))
|
|
!= (u32) mp->rx_used_desc_q)
|
|
work_done = mv643xx_eth_receive_queue(dev, budget);
|
|
|
|
if (work_done < budget) {
|
|
netif_rx_complete(dev, napi);
|
|
wrl(mp, INT_CAUSE(port_num), 0);
|
|
wrl(mp, INT_CAUSE_EXT(port_num), 0);
|
|
wrl(mp, INT_MASK(port_num), INT_RX | INT_EXT);
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
#endif
|
|
|
|
|
|
/* tx ***********************************************************************/
|
|
/**
|
|
* has_tiny_unaligned_frags - check if skb has any small, unaligned fragments
|
|
*
|
|
* Hardware can't handle unaligned fragments smaller than 9 bytes.
|
|
* This helper function detects that case.
|
|
*/
|
|
|
|
static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
|
|
{
|
|
unsigned int frag;
|
|
skb_frag_t *fragp;
|
|
|
|
for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
|
|
fragp = &skb_shinfo(skb)->frags[frag];
|
|
if (fragp->size <= 8 && fragp->page_offset & 0x7)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* eth_alloc_tx_desc_index - return the index of the next available tx desc
|
|
*/
|
|
static int eth_alloc_tx_desc_index(struct mv643xx_private *mp)
|
|
{
|
|
int tx_desc_curr;
|
|
|
|
BUG_ON(mp->tx_desc_count >= mp->tx_ring_size);
|
|
|
|
tx_desc_curr = mp->tx_curr_desc_q;
|
|
mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size;
|
|
|
|
BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q);
|
|
|
|
return tx_desc_curr;
|
|
}
|
|
|
|
/**
|
|
* eth_tx_fill_frag_descs - fill tx hw descriptors for an skb's fragments.
|
|
*
|
|
* Ensure the data for each fragment to be transmitted is mapped properly,
|
|
* then fill in descriptors in the tx hw queue.
|
|
*/
|
|
static void eth_tx_fill_frag_descs(struct mv643xx_private *mp,
|
|
struct sk_buff *skb)
|
|
{
|
|
int frag;
|
|
int tx_index;
|
|
struct eth_tx_desc *desc;
|
|
|
|
for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
|
|
skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
|
|
|
|
tx_index = eth_alloc_tx_desc_index(mp);
|
|
desc = &mp->p_tx_desc_area[tx_index];
|
|
|
|
desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA;
|
|
/* Last Frag enables interrupt and frees the skb */
|
|
if (frag == (skb_shinfo(skb)->nr_frags - 1)) {
|
|
desc->cmd_sts |= ETH_ZERO_PADDING |
|
|
ETH_TX_LAST_DESC |
|
|
ETH_TX_ENABLE_INTERRUPT;
|
|
mp->tx_skb[tx_index] = skb;
|
|
} else
|
|
mp->tx_skb[tx_index] = NULL;
|
|
|
|
desc = &mp->p_tx_desc_area[tx_index];
|
|
desc->l4i_chk = 0;
|
|
desc->byte_cnt = this_frag->size;
|
|
desc->buf_ptr = dma_map_page(NULL, this_frag->page,
|
|
this_frag->page_offset,
|
|
this_frag->size,
|
|
DMA_TO_DEVICE);
|
|
}
|
|
}
|
|
|
|
static inline __be16 sum16_as_be(__sum16 sum)
|
|
{
|
|
return (__force __be16)sum;
|
|
}
|
|
|
|
/**
|
|
* eth_tx_submit_descs_for_skb - submit data from an skb to the tx hw
|
|
*
|
|
* Ensure the data for an skb to be transmitted is mapped properly,
|
|
* then fill in descriptors in the tx hw queue and start the hardware.
|
|
*/
|
|
static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp,
|
|
struct sk_buff *skb)
|
|
{
|
|
int tx_index;
|
|
struct eth_tx_desc *desc;
|
|
u32 cmd_sts;
|
|
int length;
|
|
int nr_frags = skb_shinfo(skb)->nr_frags;
|
|
|
|
cmd_sts = ETH_TX_FIRST_DESC | ETH_GEN_CRC | ETH_BUFFER_OWNED_BY_DMA;
|
|
|
|
tx_index = eth_alloc_tx_desc_index(mp);
|
|
desc = &mp->p_tx_desc_area[tx_index];
|
|
|
|
if (nr_frags) {
|
|
eth_tx_fill_frag_descs(mp, skb);
|
|
|
|
length = skb_headlen(skb);
|
|
mp->tx_skb[tx_index] = NULL;
|
|
} else {
|
|
cmd_sts |= ETH_ZERO_PADDING |
|
|
ETH_TX_LAST_DESC |
|
|
ETH_TX_ENABLE_INTERRUPT;
|
|
length = skb->len;
|
|
mp->tx_skb[tx_index] = skb;
|
|
}
|
|
|
|
desc->byte_cnt = length;
|
|
desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
BUG_ON(skb->protocol != htons(ETH_P_IP));
|
|
|
|
cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM |
|
|
ETH_GEN_IP_V_4_CHECKSUM |
|
|
ip_hdr(skb)->ihl << ETH_TX_IHL_SHIFT;
|
|
|
|
switch (ip_hdr(skb)->protocol) {
|
|
case IPPROTO_UDP:
|
|
cmd_sts |= ETH_UDP_FRAME;
|
|
desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
|
|
break;
|
|
case IPPROTO_TCP:
|
|
desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
} else {
|
|
/* Errata BTS #50, IHL must be 5 if no HW checksum */
|
|
cmd_sts |= 5 << ETH_TX_IHL_SHIFT;
|
|
desc->l4i_chk = 0;
|
|
}
|
|
|
|
/* ensure all other descriptors are written before first cmd_sts */
|
|
wmb();
|
|
desc->cmd_sts = cmd_sts;
|
|
|
|
/* ensure all descriptors are written before poking hardware */
|
|
wmb();
|
|
mv643xx_eth_port_enable_tx(mp, 1);
|
|
|
|
mp->tx_desc_count += nr_frags + 1;
|
|
}
|
|
|
|
/**
|
|
* mv643xx_eth_start_xmit - queue an skb to the hardware for transmission
|
|
*
|
|
*/
|
|
static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
struct net_device_stats *stats = &dev->stats;
|
|
unsigned long flags;
|
|
|
|
BUG_ON(netif_queue_stopped(dev));
|
|
|
|
if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
|
|
stats->tx_dropped++;
|
|
printk(KERN_DEBUG "%s: failed to linearize tiny "
|
|
"unaligned fragment\n", dev->name);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
spin_lock_irqsave(&mp->lock, flags);
|
|
|
|
if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) {
|
|
printk(KERN_ERR "%s: transmit with queue full\n", dev->name);
|
|
netif_stop_queue(dev);
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
eth_tx_submit_descs_for_skb(mp, skb);
|
|
stats->tx_bytes += skb->len;
|
|
stats->tx_packets++;
|
|
dev->trans_start = jiffies;
|
|
|
|
if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB)
|
|
netif_stop_queue(dev);
|
|
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
|
|
/* mii management interface *************************************************/
|
|
static int ethernet_phy_get(struct mv643xx_private *mp);
|
|
|
|
/*
|
|
* eth_port_read_smi_reg - Read PHY registers
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine utilize the SMI interface to interact with the PHY in
|
|
* order to perform PHY register read.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port.
|
|
* unsigned int phy_reg PHY register address offset.
|
|
* unsigned int *value Register value buffer.
|
|
*
|
|
* OUTPUT:
|
|
* Write the value of a specified PHY register into given buffer.
|
|
*
|
|
* RETURN:
|
|
* false if the PHY is busy or read data is not in valid state.
|
|
* true otherwise.
|
|
*
|
|
*/
|
|
static void eth_port_read_smi_reg(struct mv643xx_private *mp,
|
|
unsigned int phy_reg, unsigned int *value)
|
|
{
|
|
void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG;
|
|
int phy_addr = ethernet_phy_get(mp);
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
/* the SMI register is a shared resource */
|
|
spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
|
|
|
|
/* wait for the SMI register to become available */
|
|
for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) {
|
|
if (i == PHY_WAIT_ITERATIONS) {
|
|
printk("%s: PHY busy timeout\n", mp->dev->name);
|
|
goto out;
|
|
}
|
|
udelay(PHY_WAIT_MICRO_SECONDS);
|
|
}
|
|
|
|
writel((phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_READ,
|
|
smi_reg);
|
|
|
|
/* now wait for the data to be valid */
|
|
for (i = 0; !(readl(smi_reg) & ETH_SMI_READ_VALID); i++) {
|
|
if (i == PHY_WAIT_ITERATIONS) {
|
|
printk("%s: PHY read timeout\n", mp->dev->name);
|
|
goto out;
|
|
}
|
|
udelay(PHY_WAIT_MICRO_SECONDS);
|
|
}
|
|
|
|
*value = readl(smi_reg) & 0xffff;
|
|
out:
|
|
spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
|
|
}
|
|
|
|
/*
|
|
* eth_port_write_smi_reg - Write to PHY registers
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine utilize the SMI interface to interact with the PHY in
|
|
* order to perform writes to PHY registers.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port.
|
|
* unsigned int phy_reg PHY register address offset.
|
|
* unsigned int value Register value.
|
|
*
|
|
* OUTPUT:
|
|
* Write the given value to the specified PHY register.
|
|
*
|
|
* RETURN:
|
|
* false if the PHY is busy.
|
|
* true otherwise.
|
|
*
|
|
*/
|
|
static void eth_port_write_smi_reg(struct mv643xx_private *mp,
|
|
unsigned int phy_reg, unsigned int value)
|
|
{
|
|
void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG;
|
|
int phy_addr = ethernet_phy_get(mp);
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
/* the SMI register is a shared resource */
|
|
spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
|
|
|
|
/* wait for the SMI register to become available */
|
|
for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) {
|
|
if (i == PHY_WAIT_ITERATIONS) {
|
|
printk("%s: PHY busy timeout\n", mp->dev->name);
|
|
goto out;
|
|
}
|
|
udelay(PHY_WAIT_MICRO_SECONDS);
|
|
}
|
|
|
|
writel((phy_addr << 16) | (phy_reg << 21) |
|
|
ETH_SMI_OPCODE_WRITE | (value & 0xffff), smi_reg);
|
|
out:
|
|
spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
|
|
}
|
|
|
|
|
|
/* mib counters *************************************************************/
|
|
/*
|
|
* eth_clear_mib_counters - Clear all MIB counters
|
|
*
|
|
* DESCRIPTION:
|
|
* This function clears all MIB counters of a specific ethernet port.
|
|
* A read from the MIB counter will reset the counter.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port.
|
|
*
|
|
* OUTPUT:
|
|
* After reading all MIB counters, the counters resets.
|
|
*
|
|
* RETURN:
|
|
* MIB counter value.
|
|
*
|
|
*/
|
|
static void eth_clear_mib_counters(struct mv643xx_private *mp)
|
|
{
|
|
unsigned int port_num = mp->port_num;
|
|
int i;
|
|
|
|
/* Perform dummy reads from MIB counters */
|
|
for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION;
|
|
i += 4)
|
|
rdl(mp, MIB_COUNTERS(port_num) + i);
|
|
}
|
|
|
|
static inline u32 read_mib(struct mv643xx_private *mp, int offset)
|
|
{
|
|
return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
|
|
}
|
|
|
|
static void eth_update_mib_counters(struct mv643xx_private *mp)
|
|
{
|
|
struct mv643xx_mib_counters *p = &mp->mib_counters;
|
|
int offset;
|
|
|
|
p->good_octets_received +=
|
|
read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_LOW);
|
|
p->good_octets_received +=
|
|
(u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32;
|
|
|
|
for (offset = ETH_MIB_BAD_OCTETS_RECEIVED;
|
|
offset <= ETH_MIB_FRAMES_1024_TO_MAX_OCTETS;
|
|
offset += 4)
|
|
*(u32 *)((char *)p + offset) += read_mib(mp, offset);
|
|
|
|
p->good_octets_sent += read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_LOW);
|
|
p->good_octets_sent +=
|
|
(u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_HIGH) << 32;
|
|
|
|
for (offset = ETH_MIB_GOOD_FRAMES_SENT;
|
|
offset <= ETH_MIB_LATE_COLLISION;
|
|
offset += 4)
|
|
*(u32 *)((char *)p + offset) += read_mib(mp, offset);
|
|
}
|
|
|
|
|
|
/* ethtool ******************************************************************/
|
|
struct mv643xx_stats {
|
|
char stat_string[ETH_GSTRING_LEN];
|
|
int sizeof_stat;
|
|
int stat_offset;
|
|
};
|
|
|
|
#define MV643XX_STAT(m) FIELD_SIZEOF(struct mv643xx_private, m), \
|
|
offsetof(struct mv643xx_private, m)
|
|
|
|
static const struct mv643xx_stats mv643xx_gstrings_stats[] = {
|
|
{ "rx_packets", MV643XX_STAT(stats.rx_packets) },
|
|
{ "tx_packets", MV643XX_STAT(stats.tx_packets) },
|
|
{ "rx_bytes", MV643XX_STAT(stats.rx_bytes) },
|
|
{ "tx_bytes", MV643XX_STAT(stats.tx_bytes) },
|
|
{ "rx_errors", MV643XX_STAT(stats.rx_errors) },
|
|
{ "tx_errors", MV643XX_STAT(stats.tx_errors) },
|
|
{ "rx_dropped", MV643XX_STAT(stats.rx_dropped) },
|
|
{ "tx_dropped", MV643XX_STAT(stats.tx_dropped) },
|
|
{ "good_octets_received", MV643XX_STAT(mib_counters.good_octets_received) },
|
|
{ "bad_octets_received", MV643XX_STAT(mib_counters.bad_octets_received) },
|
|
{ "internal_mac_transmit_err", MV643XX_STAT(mib_counters.internal_mac_transmit_err) },
|
|
{ "good_frames_received", MV643XX_STAT(mib_counters.good_frames_received) },
|
|
{ "bad_frames_received", MV643XX_STAT(mib_counters.bad_frames_received) },
|
|
{ "broadcast_frames_received", MV643XX_STAT(mib_counters.broadcast_frames_received) },
|
|
{ "multicast_frames_received", MV643XX_STAT(mib_counters.multicast_frames_received) },
|
|
{ "frames_64_octets", MV643XX_STAT(mib_counters.frames_64_octets) },
|
|
{ "frames_65_to_127_octets", MV643XX_STAT(mib_counters.frames_65_to_127_octets) },
|
|
{ "frames_128_to_255_octets", MV643XX_STAT(mib_counters.frames_128_to_255_octets) },
|
|
{ "frames_256_to_511_octets", MV643XX_STAT(mib_counters.frames_256_to_511_octets) },
|
|
{ "frames_512_to_1023_octets", MV643XX_STAT(mib_counters.frames_512_to_1023_octets) },
|
|
{ "frames_1024_to_max_octets", MV643XX_STAT(mib_counters.frames_1024_to_max_octets) },
|
|
{ "good_octets_sent", MV643XX_STAT(mib_counters.good_octets_sent) },
|
|
{ "good_frames_sent", MV643XX_STAT(mib_counters.good_frames_sent) },
|
|
{ "excessive_collision", MV643XX_STAT(mib_counters.excessive_collision) },
|
|
{ "multicast_frames_sent", MV643XX_STAT(mib_counters.multicast_frames_sent) },
|
|
{ "broadcast_frames_sent", MV643XX_STAT(mib_counters.broadcast_frames_sent) },
|
|
{ "unrec_mac_control_received", MV643XX_STAT(mib_counters.unrec_mac_control_received) },
|
|
{ "fc_sent", MV643XX_STAT(mib_counters.fc_sent) },
|
|
{ "good_fc_received", MV643XX_STAT(mib_counters.good_fc_received) },
|
|
{ "bad_fc_received", MV643XX_STAT(mib_counters.bad_fc_received) },
|
|
{ "undersize_received", MV643XX_STAT(mib_counters.undersize_received) },
|
|
{ "fragments_received", MV643XX_STAT(mib_counters.fragments_received) },
|
|
{ "oversize_received", MV643XX_STAT(mib_counters.oversize_received) },
|
|
{ "jabber_received", MV643XX_STAT(mib_counters.jabber_received) },
|
|
{ "mac_receive_error", MV643XX_STAT(mib_counters.mac_receive_error) },
|
|
{ "bad_crc_event", MV643XX_STAT(mib_counters.bad_crc_event) },
|
|
{ "collision", MV643XX_STAT(mib_counters.collision) },
|
|
{ "late_collision", MV643XX_STAT(mib_counters.late_collision) },
|
|
};
|
|
|
|
#define MV643XX_STATS_LEN ARRAY_SIZE(mv643xx_gstrings_stats)
|
|
|
|
static int mv643xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
int err;
|
|
|
|
spin_lock_irq(&mp->lock);
|
|
err = mii_ethtool_gset(&mp->mii, cmd);
|
|
spin_unlock_irq(&mp->lock);
|
|
|
|
/* The PHY may support 1000baseT_Half, but the mv643xx does not */
|
|
cmd->supported &= ~SUPPORTED_1000baseT_Half;
|
|
cmd->advertising &= ~ADVERTISED_1000baseT_Half;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mv643xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
int err;
|
|
|
|
spin_lock_irq(&mp->lock);
|
|
err = mii_ethtool_sset(&mp->mii, cmd);
|
|
spin_unlock_irq(&mp->lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void mv643xx_get_drvinfo(struct net_device *netdev,
|
|
struct ethtool_drvinfo *drvinfo)
|
|
{
|
|
strncpy(drvinfo->driver, mv643xx_driver_name, 32);
|
|
strncpy(drvinfo->version, mv643xx_driver_version, 32);
|
|
strncpy(drvinfo->fw_version, "N/A", 32);
|
|
strncpy(drvinfo->bus_info, "mv643xx", 32);
|
|
drvinfo->n_stats = MV643XX_STATS_LEN;
|
|
}
|
|
|
|
static int mv643xx_eth_nway_restart(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
|
|
return mii_nway_restart(&mp->mii);
|
|
}
|
|
|
|
static u32 mv643xx_eth_get_link(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
|
|
return mii_link_ok(&mp->mii);
|
|
}
|
|
|
|
static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset,
|
|
uint8_t *data)
|
|
{
|
|
int i;
|
|
|
|
switch(stringset) {
|
|
case ETH_SS_STATS:
|
|
for (i=0; i < MV643XX_STATS_LEN; i++) {
|
|
memcpy(data + i * ETH_GSTRING_LEN,
|
|
mv643xx_gstrings_stats[i].stat_string,
|
|
ETH_GSTRING_LEN);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void mv643xx_get_ethtool_stats(struct net_device *netdev,
|
|
struct ethtool_stats *stats, uint64_t *data)
|
|
{
|
|
struct mv643xx_private *mp = netdev->priv;
|
|
int i;
|
|
|
|
eth_update_mib_counters(mp);
|
|
|
|
for (i = 0; i < MV643XX_STATS_LEN; i++) {
|
|
char *p = (char *)mp+mv643xx_gstrings_stats[i].stat_offset;
|
|
data[i] = (mv643xx_gstrings_stats[i].sizeof_stat ==
|
|
sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p;
|
|
}
|
|
}
|
|
|
|
static int mv643xx_get_sset_count(struct net_device *netdev, int sset)
|
|
{
|
|
switch (sset) {
|
|
case ETH_SS_STATS:
|
|
return MV643XX_STATS_LEN;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static const struct ethtool_ops mv643xx_ethtool_ops = {
|
|
.get_settings = mv643xx_get_settings,
|
|
.set_settings = mv643xx_set_settings,
|
|
.get_drvinfo = mv643xx_get_drvinfo,
|
|
.get_link = mv643xx_eth_get_link,
|
|
.set_sg = ethtool_op_set_sg,
|
|
.get_sset_count = mv643xx_get_sset_count,
|
|
.get_ethtool_stats = mv643xx_get_ethtool_stats,
|
|
.get_strings = mv643xx_get_strings,
|
|
.nway_reset = mv643xx_eth_nway_restart,
|
|
};
|
|
|
|
|
|
/* address handling *********************************************************/
|
|
/*
|
|
* eth_port_uc_addr_get - Read the MAC address from the port's hw registers
|
|
*/
|
|
static void eth_port_uc_addr_get(struct mv643xx_private *mp,
|
|
unsigned char *p_addr)
|
|
{
|
|
unsigned int port_num = mp->port_num;
|
|
unsigned int mac_h;
|
|
unsigned int mac_l;
|
|
|
|
mac_h = rdl(mp, MAC_ADDR_HIGH(port_num));
|
|
mac_l = rdl(mp, MAC_ADDR_LOW(port_num));
|
|
|
|
p_addr[0] = (mac_h >> 24) & 0xff;
|
|
p_addr[1] = (mac_h >> 16) & 0xff;
|
|
p_addr[2] = (mac_h >> 8) & 0xff;
|
|
p_addr[3] = mac_h & 0xff;
|
|
p_addr[4] = (mac_l >> 8) & 0xff;
|
|
p_addr[5] = mac_l & 0xff;
|
|
}
|
|
|
|
/*
|
|
* eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables
|
|
*
|
|
* DESCRIPTION:
|
|
* Go through all the DA filter tables (Unicast, Special Multicast &
|
|
* Other Multicast) and set each entry to 0.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port.
|
|
*
|
|
* OUTPUT:
|
|
* Multicast and Unicast packets are rejected.
|
|
*
|
|
* RETURN:
|
|
* None.
|
|
*/
|
|
static void eth_port_init_mac_tables(struct mv643xx_private *mp)
|
|
{
|
|
unsigned int port_num = mp->port_num;
|
|
int table_index;
|
|
|
|
/* Clear DA filter unicast table (Ex_dFUT) */
|
|
for (table_index = 0; table_index <= 0xC; table_index += 4)
|
|
wrl(mp, UNICAST_TABLE(port_num) + table_index, 0);
|
|
|
|
for (table_index = 0; table_index <= 0xFC; table_index += 4) {
|
|
/* Clear DA filter special multicast table (Ex_dFSMT) */
|
|
wrl(mp, SPECIAL_MCAST_TABLE(port_num) + table_index, 0);
|
|
/* Clear DA filter other multicast table (Ex_dFOMT) */
|
|
wrl(mp, OTHER_MCAST_TABLE(port_num) + table_index, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The entries in each table are indexed by a hash of a packet's MAC
|
|
* address. One bit in each entry determines whether the packet is
|
|
* accepted. There are 4 entries (each 8 bits wide) in each register
|
|
* of the table. The bits in each entry are defined as follows:
|
|
* 0 Accept=1, Drop=0
|
|
* 3-1 Queue (ETH_Q0=0)
|
|
* 7-4 Reserved = 0;
|
|
*/
|
|
static void eth_port_set_filter_table_entry(struct mv643xx_private *mp,
|
|
int table, unsigned char entry)
|
|
{
|
|
unsigned int table_reg;
|
|
unsigned int tbl_offset;
|
|
unsigned int reg_offset;
|
|
|
|
tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */
|
|
reg_offset = entry % 4; /* Entry offset within the register */
|
|
|
|
/* Set "accepts frame bit" at specified table entry */
|
|
table_reg = rdl(mp, table + tbl_offset);
|
|
table_reg |= 0x01 << (8 * reg_offset);
|
|
wrl(mp, table + tbl_offset, table_reg);
|
|
}
|
|
|
|
/*
|
|
* eth_port_uc_addr_set - Write a MAC address into the port's hw registers
|
|
*/
|
|
static void eth_port_uc_addr_set(struct mv643xx_private *mp,
|
|
unsigned char *p_addr)
|
|
{
|
|
unsigned int port_num = mp->port_num;
|
|
unsigned int mac_h;
|
|
unsigned int mac_l;
|
|
int table;
|
|
|
|
mac_l = (p_addr[4] << 8) | (p_addr[5]);
|
|
mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) |
|
|
(p_addr[3] << 0);
|
|
|
|
wrl(mp, MAC_ADDR_LOW(port_num), mac_l);
|
|
wrl(mp, MAC_ADDR_HIGH(port_num), mac_h);
|
|
|
|
/* Accept frames with this address */
|
|
table = UNICAST_TABLE(port_num);
|
|
eth_port_set_filter_table_entry(mp, table, p_addr[5] & 0x0f);
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_update_mac_address
|
|
*
|
|
* Update the MAC address of the port in the address table
|
|
*
|
|
* Input : pointer to ethernet interface network device structure
|
|
* Output : N/A
|
|
*/
|
|
static void mv643xx_eth_update_mac_address(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
|
|
eth_port_init_mac_tables(mp);
|
|
eth_port_uc_addr_set(mp, dev->dev_addr);
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_set_mac_address
|
|
*
|
|
* Change the interface's mac address.
|
|
* No special hardware thing should be done because interface is always
|
|
* put in promiscuous mode.
|
|
*
|
|
* Input : pointer to ethernet interface network device structure and
|
|
* a pointer to the designated entry to be added to the cache.
|
|
* Output : zero upon success, negative upon failure
|
|
*/
|
|
static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 6; i++)
|
|
/* +2 is for the offset of the HW addr type */
|
|
dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
|
|
mv643xx_eth_update_mac_address(dev);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* eth_port_mc_addr - Multicast address settings.
|
|
*
|
|
* The MV device supports multicast using two tables:
|
|
* 1) Special Multicast Table for MAC addresses of the form
|
|
* 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_FF).
|
|
* The MAC DA[7:0] bits are used as a pointer to the Special Multicast
|
|
* Table entries in the DA-Filter table.
|
|
* 2) Other Multicast Table for multicast of another type. A CRC-8bit
|
|
* is used as an index to the Other Multicast Table entries in the
|
|
* DA-Filter table. This function calculates the CRC-8bit value.
|
|
* In either case, eth_port_set_filter_table_entry() is then called
|
|
* to set to set the actual table entry.
|
|
*/
|
|
static void eth_port_mc_addr(struct mv643xx_private *mp, unsigned char *p_addr)
|
|
{
|
|
unsigned int port_num = mp->port_num;
|
|
unsigned int mac_h;
|
|
unsigned int mac_l;
|
|
unsigned char crc_result = 0;
|
|
int table;
|
|
int mac_array[48];
|
|
int crc[8];
|
|
int i;
|
|
|
|
if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) &&
|
|
(p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) {
|
|
table = SPECIAL_MCAST_TABLE(port_num);
|
|
eth_port_set_filter_table_entry(mp, table, p_addr[5]);
|
|
return;
|
|
}
|
|
|
|
/* Calculate CRC-8 out of the given address */
|
|
mac_h = (p_addr[0] << 8) | (p_addr[1]);
|
|
mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) |
|
|
(p_addr[4] << 8) | (p_addr[5] << 0);
|
|
|
|
for (i = 0; i < 32; i++)
|
|
mac_array[i] = (mac_l >> i) & 0x1;
|
|
for (i = 32; i < 48; i++)
|
|
mac_array[i] = (mac_h >> (i - 32)) & 0x1;
|
|
|
|
crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^ mac_array[39] ^
|
|
mac_array[35] ^ mac_array[34] ^ mac_array[31] ^ mac_array[30] ^
|
|
mac_array[28] ^ mac_array[23] ^ mac_array[21] ^ mac_array[19] ^
|
|
mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^
|
|
mac_array[8] ^ mac_array[7] ^ mac_array[6] ^ mac_array[0];
|
|
|
|
crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
|
|
mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[34] ^
|
|
mac_array[32] ^ mac_array[30] ^ mac_array[29] ^ mac_array[28] ^
|
|
mac_array[24] ^ mac_array[23] ^ mac_array[22] ^ mac_array[21] ^
|
|
mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[16] ^
|
|
mac_array[15] ^ mac_array[14] ^ mac_array[13] ^ mac_array[12] ^
|
|
mac_array[9] ^ mac_array[6] ^ mac_array[1] ^ mac_array[0];
|
|
|
|
crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^ mac_array[43] ^
|
|
mac_array[42] ^ mac_array[39] ^ mac_array[37] ^ mac_array[34] ^
|
|
mac_array[33] ^ mac_array[29] ^ mac_array[28] ^ mac_array[25] ^
|
|
mac_array[24] ^ mac_array[22] ^ mac_array[17] ^ mac_array[15] ^
|
|
mac_array[13] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^
|
|
mac_array[6] ^ mac_array[2] ^ mac_array[1] ^ mac_array[0];
|
|
|
|
crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
|
|
mac_array[40] ^ mac_array[38] ^ mac_array[35] ^ mac_array[34] ^
|
|
mac_array[30] ^ mac_array[29] ^ mac_array[26] ^ mac_array[25] ^
|
|
mac_array[23] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^
|
|
mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[7] ^
|
|
mac_array[3] ^ mac_array[2] ^ mac_array[1];
|
|
|
|
crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[41] ^
|
|
mac_array[39] ^ mac_array[36] ^ mac_array[35] ^ mac_array[31] ^
|
|
mac_array[30] ^ mac_array[27] ^ mac_array[26] ^ mac_array[24] ^
|
|
mac_array[19] ^ mac_array[17] ^ mac_array[15] ^ mac_array[14] ^
|
|
mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[4] ^
|
|
mac_array[3] ^ mac_array[2];
|
|
|
|
crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^ mac_array[42] ^
|
|
mac_array[40] ^ mac_array[37] ^ mac_array[36] ^ mac_array[32] ^
|
|
mac_array[31] ^ mac_array[28] ^ mac_array[27] ^ mac_array[25] ^
|
|
mac_array[20] ^ mac_array[18] ^ mac_array[16] ^ mac_array[15] ^
|
|
mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[5] ^
|
|
mac_array[4] ^ mac_array[3];
|
|
|
|
crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^ mac_array[41] ^
|
|
mac_array[38] ^ mac_array[37] ^ mac_array[33] ^ mac_array[32] ^
|
|
mac_array[29] ^ mac_array[28] ^ mac_array[26] ^ mac_array[21] ^
|
|
mac_array[19] ^ mac_array[17] ^ mac_array[16] ^ mac_array[14] ^
|
|
mac_array[12] ^ mac_array[10] ^ mac_array[6] ^ mac_array[5] ^
|
|
mac_array[4];
|
|
|
|
crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^ mac_array[39] ^
|
|
mac_array[38] ^ mac_array[34] ^ mac_array[33] ^ mac_array[30] ^
|
|
mac_array[29] ^ mac_array[27] ^ mac_array[22] ^ mac_array[20] ^
|
|
mac_array[18] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^
|
|
mac_array[11] ^ mac_array[7] ^ mac_array[6] ^ mac_array[5];
|
|
|
|
for (i = 0; i < 8; i++)
|
|
crc_result = crc_result | (crc[i] << i);
|
|
|
|
table = OTHER_MCAST_TABLE(port_num);
|
|
eth_port_set_filter_table_entry(mp, table, crc_result);
|
|
}
|
|
|
|
/*
|
|
* Set the entire multicast list based on dev->mc_list.
|
|
*/
|
|
static void eth_port_set_multicast_list(struct net_device *dev)
|
|
{
|
|
|
|
struct dev_mc_list *mc_list;
|
|
int i;
|
|
int table_index;
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
unsigned int eth_port_num = mp->port_num;
|
|
|
|
/* If the device is in promiscuous mode or in all multicast mode,
|
|
* we will fully populate both multicast tables with accept.
|
|
* This is guaranteed to yield a match on all multicast addresses...
|
|
*/
|
|
if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI)) {
|
|
for (table_index = 0; table_index <= 0xFC; table_index += 4) {
|
|
/* Set all entries in DA filter special multicast
|
|
* table (Ex_dFSMT)
|
|
* Set for ETH_Q0 for now
|
|
* Bits
|
|
* 0 Accept=1, Drop=0
|
|
* 3-1 Queue ETH_Q0=0
|
|
* 7-4 Reserved = 0;
|
|
*/
|
|
wrl(mp, SPECIAL_MCAST_TABLE(eth_port_num) + table_index, 0x01010101);
|
|
|
|
/* Set all entries in DA filter other multicast
|
|
* table (Ex_dFOMT)
|
|
* Set for ETH_Q0 for now
|
|
* Bits
|
|
* 0 Accept=1, Drop=0
|
|
* 3-1 Queue ETH_Q0=0
|
|
* 7-4 Reserved = 0;
|
|
*/
|
|
wrl(mp, OTHER_MCAST_TABLE(eth_port_num) + table_index, 0x01010101);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* We will clear out multicast tables every time we get the list.
|
|
* Then add the entire new list...
|
|
*/
|
|
for (table_index = 0; table_index <= 0xFC; table_index += 4) {
|
|
/* Clear DA filter special multicast table (Ex_dFSMT) */
|
|
wrl(mp, SPECIAL_MCAST_TABLE(eth_port_num) + table_index, 0);
|
|
|
|
/* Clear DA filter other multicast table (Ex_dFOMT) */
|
|
wrl(mp, OTHER_MCAST_TABLE(eth_port_num) + table_index, 0);
|
|
}
|
|
|
|
/* Get pointer to net_device multicast list and add each one... */
|
|
for (i = 0, mc_list = dev->mc_list;
|
|
(i < 256) && (mc_list != NULL) && (i < dev->mc_count);
|
|
i++, mc_list = mc_list->next)
|
|
if (mc_list->dmi_addrlen == 6)
|
|
eth_port_mc_addr(mp, mc_list->dmi_addr);
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_set_rx_mode
|
|
*
|
|
* Change from promiscuos to regular rx mode
|
|
*
|
|
* Input : pointer to ethernet interface network device structure
|
|
* Output : N/A
|
|
*/
|
|
static void mv643xx_eth_set_rx_mode(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
u32 config_reg;
|
|
|
|
config_reg = rdl(mp, PORT_CONFIG(mp->port_num));
|
|
if (dev->flags & IFF_PROMISC)
|
|
config_reg |= UNICAST_PROMISCUOUS_MODE;
|
|
else
|
|
config_reg &= ~UNICAST_PROMISCUOUS_MODE;
|
|
wrl(mp, PORT_CONFIG(mp->port_num), config_reg);
|
|
|
|
eth_port_set_multicast_list(dev);
|
|
}
|
|
|
|
|
|
/* rx/tx queue initialisation ***********************************************/
|
|
/*
|
|
* ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
|
|
*
|
|
* DESCRIPTION:
|
|
* This function prepares a Rx chained list of descriptors and packet
|
|
* buffers in a form of a ring. The routine must be called after port
|
|
* initialization routine and before port start routine.
|
|
* The Ethernet SDMA engine uses CPU bus addresses to access the various
|
|
* devices in the system (i.e. DRAM). This function uses the ethernet
|
|
* struct 'virtual to physical' routine (set by the user) to set the ring
|
|
* with physical addresses.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port Control srtuct.
|
|
*
|
|
* OUTPUT:
|
|
* The routine updates the Ethernet port control struct with information
|
|
* regarding the Rx descriptors and buffers.
|
|
*
|
|
* RETURN:
|
|
* None.
|
|
*/
|
|
static void ether_init_rx_desc_ring(struct mv643xx_private *mp)
|
|
{
|
|
volatile struct eth_rx_desc *p_rx_desc;
|
|
int rx_desc_num = mp->rx_ring_size;
|
|
int i;
|
|
|
|
/* initialize the next_desc_ptr links in the Rx descriptors ring */
|
|
p_rx_desc = (struct eth_rx_desc *)mp->p_rx_desc_area;
|
|
for (i = 0; i < rx_desc_num; i++) {
|
|
p_rx_desc[i].next_desc_ptr = mp->rx_desc_dma +
|
|
((i + 1) % rx_desc_num) * sizeof(struct eth_rx_desc);
|
|
}
|
|
|
|
/* Save Rx desc pointer to driver struct. */
|
|
mp->rx_curr_desc_q = 0;
|
|
mp->rx_used_desc_q = 0;
|
|
|
|
mp->rx_desc_area_size = rx_desc_num * sizeof(struct eth_rx_desc);
|
|
}
|
|
|
|
static void mv643xx_eth_free_rx_rings(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
int curr;
|
|
|
|
/* Stop RX Queues */
|
|
mv643xx_eth_port_disable_rx(mp);
|
|
|
|
/* Free preallocated skb's on RX rings */
|
|
for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) {
|
|
if (mp->rx_skb[curr]) {
|
|
dev_kfree_skb(mp->rx_skb[curr]);
|
|
mp->rx_desc_count--;
|
|
}
|
|
}
|
|
|
|
if (mp->rx_desc_count)
|
|
printk(KERN_ERR
|
|
"%s: Error in freeing Rx Ring. %d skb's still"
|
|
" stuck in RX Ring - ignoring them\n", dev->name,
|
|
mp->rx_desc_count);
|
|
/* Free RX ring */
|
|
if (mp->rx_sram_size)
|
|
iounmap(mp->p_rx_desc_area);
|
|
else
|
|
dma_free_coherent(NULL, mp->rx_desc_area_size,
|
|
mp->p_rx_desc_area, mp->rx_desc_dma);
|
|
}
|
|
|
|
/*
|
|
* ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory.
|
|
*
|
|
* DESCRIPTION:
|
|
* This function prepares a Tx chained list of descriptors and packet
|
|
* buffers in a form of a ring. The routine must be called after port
|
|
* initialization routine and before port start routine.
|
|
* The Ethernet SDMA engine uses CPU bus addresses to access the various
|
|
* devices in the system (i.e. DRAM). This function uses the ethernet
|
|
* struct 'virtual to physical' routine (set by the user) to set the ring
|
|
* with physical addresses.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port Control srtuct.
|
|
*
|
|
* OUTPUT:
|
|
* The routine updates the Ethernet port control struct with information
|
|
* regarding the Tx descriptors and buffers.
|
|
*
|
|
* RETURN:
|
|
* None.
|
|
*/
|
|
static void ether_init_tx_desc_ring(struct mv643xx_private *mp)
|
|
{
|
|
int tx_desc_num = mp->tx_ring_size;
|
|
struct eth_tx_desc *p_tx_desc;
|
|
int i;
|
|
|
|
/* Initialize the next_desc_ptr links in the Tx descriptors ring */
|
|
p_tx_desc = (struct eth_tx_desc *)mp->p_tx_desc_area;
|
|
for (i = 0; i < tx_desc_num; i++) {
|
|
p_tx_desc[i].next_desc_ptr = mp->tx_desc_dma +
|
|
((i + 1) % tx_desc_num) * sizeof(struct eth_tx_desc);
|
|
}
|
|
|
|
mp->tx_curr_desc_q = 0;
|
|
mp->tx_used_desc_q = 0;
|
|
|
|
mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc);
|
|
}
|
|
|
|
/**
|
|
* mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors
|
|
*
|
|
* If force is non-zero, frees uncompleted descriptors as well
|
|
*/
|
|
static int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
struct eth_tx_desc *desc;
|
|
u32 cmd_sts;
|
|
struct sk_buff *skb;
|
|
unsigned long flags;
|
|
int tx_index;
|
|
dma_addr_t addr;
|
|
int count;
|
|
int released = 0;
|
|
|
|
while (mp->tx_desc_count > 0) {
|
|
spin_lock_irqsave(&mp->lock, flags);
|
|
|
|
/* tx_desc_count might have changed before acquiring the lock */
|
|
if (mp->tx_desc_count <= 0) {
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
return released;
|
|
}
|
|
|
|
tx_index = mp->tx_used_desc_q;
|
|
desc = &mp->p_tx_desc_area[tx_index];
|
|
cmd_sts = desc->cmd_sts;
|
|
|
|
if (!force && (cmd_sts & ETH_BUFFER_OWNED_BY_DMA)) {
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
return released;
|
|
}
|
|
|
|
mp->tx_used_desc_q = (tx_index + 1) % mp->tx_ring_size;
|
|
mp->tx_desc_count--;
|
|
|
|
addr = desc->buf_ptr;
|
|
count = desc->byte_cnt;
|
|
skb = mp->tx_skb[tx_index];
|
|
if (skb)
|
|
mp->tx_skb[tx_index] = NULL;
|
|
|
|
if (cmd_sts & ETH_ERROR_SUMMARY) {
|
|
printk("%s: Error in TX\n", dev->name);
|
|
dev->stats.tx_errors++;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
|
|
if (cmd_sts & ETH_TX_FIRST_DESC)
|
|
dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
|
|
else
|
|
dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
|
|
|
|
if (skb)
|
|
dev_kfree_skb_irq(skb);
|
|
|
|
released = 1;
|
|
}
|
|
|
|
return released;
|
|
}
|
|
|
|
static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
|
|
if (mv643xx_eth_free_tx_descs(dev, 0) &&
|
|
mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
static void mv643xx_eth_free_all_tx_descs(struct net_device *dev)
|
|
{
|
|
mv643xx_eth_free_tx_descs(dev, 1);
|
|
}
|
|
|
|
static void mv643xx_eth_free_tx_rings(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
|
|
/* Stop Tx Queues */
|
|
mv643xx_eth_port_disable_tx(mp);
|
|
|
|
/* Free outstanding skb's on TX ring */
|
|
mv643xx_eth_free_all_tx_descs(dev);
|
|
|
|
BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q);
|
|
|
|
/* Free TX ring */
|
|
if (mp->tx_sram_size)
|
|
iounmap(mp->p_tx_desc_area);
|
|
else
|
|
dma_free_coherent(NULL, mp->tx_desc_area_size,
|
|
mp->p_tx_desc_area, mp->tx_desc_dma);
|
|
}
|
|
|
|
|
|
/* netdev ops and related ***************************************************/
|
|
static void eth_port_reset(struct mv643xx_private *mp);
|
|
|
|
/* Set the mv643xx port configuration register for the speed/duplex mode. */
|
|
static void mv643xx_eth_update_pscr(struct net_device *dev,
|
|
struct ethtool_cmd *ecmd)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
int port_num = mp->port_num;
|
|
u32 o_pscr, n_pscr;
|
|
unsigned int queues;
|
|
|
|
o_pscr = rdl(mp, PORT_SERIAL_CONTROL(port_num));
|
|
n_pscr = o_pscr;
|
|
|
|
/* clear speed, duplex and rx buffer size fields */
|
|
n_pscr &= ~(SET_MII_SPEED_TO_100 |
|
|
SET_GMII_SPEED_TO_1000 |
|
|
SET_FULL_DUPLEX_MODE |
|
|
MAX_RX_PACKET_MASK);
|
|
|
|
if (ecmd->duplex == DUPLEX_FULL)
|
|
n_pscr |= SET_FULL_DUPLEX_MODE;
|
|
|
|
if (ecmd->speed == SPEED_1000)
|
|
n_pscr |= SET_GMII_SPEED_TO_1000 |
|
|
MAX_RX_PACKET_9700BYTE;
|
|
else {
|
|
if (ecmd->speed == SPEED_100)
|
|
n_pscr |= SET_MII_SPEED_TO_100;
|
|
n_pscr |= MAX_RX_PACKET_1522BYTE;
|
|
}
|
|
|
|
if (n_pscr != o_pscr) {
|
|
if ((o_pscr & SERIAL_PORT_ENABLE) == 0)
|
|
wrl(mp, PORT_SERIAL_CONTROL(port_num), n_pscr);
|
|
else {
|
|
queues = mv643xx_eth_port_disable_tx(mp);
|
|
|
|
o_pscr &= ~SERIAL_PORT_ENABLE;
|
|
wrl(mp, PORT_SERIAL_CONTROL(port_num), o_pscr);
|
|
wrl(mp, PORT_SERIAL_CONTROL(port_num), n_pscr);
|
|
wrl(mp, PORT_SERIAL_CONTROL(port_num), n_pscr);
|
|
if (queues)
|
|
mv643xx_eth_port_enable_tx(mp, queues);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_int_handler
|
|
*
|
|
* Main interrupt handler for the gigbit ethernet ports
|
|
*
|
|
* Input : irq - irq number (not used)
|
|
* dev_id - a pointer to the required interface's data structure
|
|
* regs - not used
|
|
* Output : N/A
|
|
*/
|
|
|
|
static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = (struct net_device *)dev_id;
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
u32 eth_int_cause, eth_int_cause_ext = 0;
|
|
unsigned int port_num = mp->port_num;
|
|
|
|
/* Read interrupt cause registers */
|
|
eth_int_cause = rdl(mp, INT_CAUSE(port_num)) & (INT_RX | INT_EXT);
|
|
if (eth_int_cause & INT_EXT) {
|
|
eth_int_cause_ext = rdl(mp, INT_CAUSE_EXT(port_num))
|
|
& (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
|
|
wrl(mp, INT_CAUSE_EXT(port_num), ~eth_int_cause_ext);
|
|
}
|
|
|
|
/* PHY status changed */
|
|
if (eth_int_cause_ext & (INT_EXT_LINK | INT_EXT_PHY)) {
|
|
struct ethtool_cmd cmd;
|
|
|
|
if (mii_link_ok(&mp->mii)) {
|
|
mii_ethtool_gset(&mp->mii, &cmd);
|
|
mv643xx_eth_update_pscr(dev, &cmd);
|
|
mv643xx_eth_port_enable_tx(mp, 1);
|
|
if (!netif_carrier_ok(dev)) {
|
|
netif_carrier_on(dev);
|
|
if (mp->tx_ring_size - mp->tx_desc_count >=
|
|
MAX_DESCS_PER_SKB)
|
|
netif_wake_queue(dev);
|
|
}
|
|
} else if (netif_carrier_ok(dev)) {
|
|
netif_stop_queue(dev);
|
|
netif_carrier_off(dev);
|
|
}
|
|
}
|
|
|
|
#ifdef MV643XX_NAPI
|
|
if (eth_int_cause & INT_RX) {
|
|
/* schedule the NAPI poll routine to maintain port */
|
|
wrl(mp, INT_MASK(port_num), 0x00000000);
|
|
|
|
/* wait for previous write to complete */
|
|
rdl(mp, INT_MASK(port_num));
|
|
|
|
netif_rx_schedule(dev, &mp->napi);
|
|
}
|
|
#else
|
|
if (eth_int_cause & INT_RX)
|
|
mv643xx_eth_receive_queue(dev, INT_MAX);
|
|
#endif
|
|
if (eth_int_cause_ext & INT_EXT_TX)
|
|
mv643xx_eth_free_completed_tx_descs(dev);
|
|
|
|
/*
|
|
* If no real interrupt occured, exit.
|
|
* This can happen when using gigE interrupt coalescing mechanism.
|
|
*/
|
|
if ((eth_int_cause == 0x0) && (eth_int_cause_ext == 0x0))
|
|
return IRQ_NONE;
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* ethernet_phy_reset - Reset Ethernet port PHY.
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine utilizes the SMI interface to reset the ethernet port PHY.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port.
|
|
*
|
|
* OUTPUT:
|
|
* The PHY is reset.
|
|
*
|
|
* RETURN:
|
|
* None.
|
|
*
|
|
*/
|
|
static void ethernet_phy_reset(struct mv643xx_private *mp)
|
|
{
|
|
unsigned int phy_reg_data;
|
|
|
|
/* Reset the PHY */
|
|
eth_port_read_smi_reg(mp, 0, &phy_reg_data);
|
|
phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */
|
|
eth_port_write_smi_reg(mp, 0, phy_reg_data);
|
|
|
|
/* wait for PHY to come out of reset */
|
|
do {
|
|
udelay(1);
|
|
eth_port_read_smi_reg(mp, 0, &phy_reg_data);
|
|
} while (phy_reg_data & 0x8000);
|
|
}
|
|
|
|
/*
|
|
* eth_port_start - Start the Ethernet port activity.
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine prepares the Ethernet port for Rx and Tx activity:
|
|
* 1. Initialize Tx and Rx Current Descriptor Pointer for each queue that
|
|
* has been initialized a descriptor's ring (using
|
|
* ether_init_tx_desc_ring for Tx and ether_init_rx_desc_ring for Rx)
|
|
* 2. Initialize and enable the Ethernet configuration port by writing to
|
|
* the port's configuration and command registers.
|
|
* 3. Initialize and enable the SDMA by writing to the SDMA's
|
|
* configuration and command registers. After completing these steps,
|
|
* the ethernet port SDMA can starts to perform Rx and Tx activities.
|
|
*
|
|
* Note: Each Rx and Tx queue descriptor's list must be initialized prior
|
|
* to calling this function (use ether_init_tx_desc_ring for Tx queues
|
|
* and ether_init_rx_desc_ring for Rx queues).
|
|
*
|
|
* INPUT:
|
|
* dev - a pointer to the required interface
|
|
*
|
|
* OUTPUT:
|
|
* Ethernet port is ready to receive and transmit.
|
|
*
|
|
* RETURN:
|
|
* None.
|
|
*/
|
|
static void eth_port_start(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
unsigned int port_num = mp->port_num;
|
|
int tx_curr_desc, rx_curr_desc;
|
|
u32 pscr;
|
|
struct ethtool_cmd ethtool_cmd;
|
|
|
|
/* Assignment of Tx CTRP of given queue */
|
|
tx_curr_desc = mp->tx_curr_desc_q;
|
|
wrl(mp, TXQ_CURRENT_DESC_PTR(port_num),
|
|
(u32)((struct eth_tx_desc *)mp->tx_desc_dma + tx_curr_desc));
|
|
|
|
/* Assignment of Rx CRDP of given queue */
|
|
rx_curr_desc = mp->rx_curr_desc_q;
|
|
wrl(mp, RXQ_CURRENT_DESC_PTR(port_num),
|
|
(u32)((struct eth_rx_desc *)mp->rx_desc_dma + rx_curr_desc));
|
|
|
|
/* Add the assigned Ethernet address to the port's address table */
|
|
eth_port_uc_addr_set(mp, dev->dev_addr);
|
|
|
|
/*
|
|
* Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
|
|
* frames to RX queue #0.
|
|
*/
|
|
wrl(mp, PORT_CONFIG(port_num), 0x00000000);
|
|
|
|
/*
|
|
* Treat BPDUs as normal multicasts, and disable partition mode.
|
|
*/
|
|
wrl(mp, PORT_CONFIG_EXT(port_num), 0x00000000);
|
|
|
|
pscr = rdl(mp, PORT_SERIAL_CONTROL(port_num));
|
|
|
|
pscr &= ~(SERIAL_PORT_ENABLE | FORCE_LINK_PASS);
|
|
wrl(mp, PORT_SERIAL_CONTROL(port_num), pscr);
|
|
|
|
pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
|
|
DISABLE_AUTO_NEG_SPEED_GMII |
|
|
DISABLE_AUTO_NEG_FOR_DUPLEX |
|
|
DO_NOT_FORCE_LINK_FAIL |
|
|
SERIAL_PORT_CONTROL_RESERVED;
|
|
|
|
wrl(mp, PORT_SERIAL_CONTROL(port_num), pscr);
|
|
|
|
pscr |= SERIAL_PORT_ENABLE;
|
|
wrl(mp, PORT_SERIAL_CONTROL(port_num), pscr);
|
|
|
|
/* Assign port SDMA configuration */
|
|
wrl(mp, SDMA_CONFIG(port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE);
|
|
|
|
/* Enable port Rx. */
|
|
mv643xx_eth_port_enable_rx(mp, 1);
|
|
|
|
/* Disable port bandwidth limits by clearing MTU register */
|
|
wrl(mp, TX_BW_MTU(port_num), 0);
|
|
|
|
/* save phy settings across reset */
|
|
mv643xx_get_settings(dev, ðtool_cmd);
|
|
ethernet_phy_reset(mp);
|
|
mv643xx_set_settings(dev, ðtool_cmd);
|
|
}
|
|
|
|
#ifdef MV643XX_COAL
|
|
|
|
/*
|
|
* eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine sets the RX coalescing interrupt mechanism parameter.
|
|
* This parameter is a timeout counter, that counts in 64 t_clk
|
|
* chunks ; that when timeout event occurs a maskable interrupt
|
|
* occurs.
|
|
* The parameter is calculated using the tClk of the MV-643xx chip
|
|
* , and the required delay of the interrupt in usec.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet port
|
|
* unsigned int delay Delay in usec
|
|
*
|
|
* OUTPUT:
|
|
* Interrupt coalescing mechanism value is set in MV-643xx chip.
|
|
*
|
|
* RETURN:
|
|
* The interrupt coalescing value set in the gigE port.
|
|
*
|
|
*/
|
|
static unsigned int eth_port_set_rx_coal(struct mv643xx_private *mp,
|
|
unsigned int delay)
|
|
{
|
|
unsigned int port_num = mp->port_num;
|
|
unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
|
|
|
|
/* Set RX Coalescing mechanism */
|
|
wrl(mp, SDMA_CONFIG(port_num),
|
|
((coal & 0x3fff) << 8) |
|
|
(rdl(mp, SDMA_CONFIG(port_num))
|
|
& 0xffc000ff));
|
|
|
|
return coal;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine sets the TX coalescing interrupt mechanism parameter.
|
|
* This parameter is a timeout counter, that counts in 64 t_clk
|
|
* chunks ; that when timeout event occurs a maskable interrupt
|
|
* occurs.
|
|
* The parameter is calculated using the t_cLK frequency of the
|
|
* MV-643xx chip and the required delay in the interrupt in uSec
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet port
|
|
* unsigned int delay Delay in uSeconds
|
|
*
|
|
* OUTPUT:
|
|
* Interrupt coalescing mechanism value is set in MV-643xx chip.
|
|
*
|
|
* RETURN:
|
|
* The interrupt coalescing value set in the gigE port.
|
|
*
|
|
*/
|
|
static unsigned int eth_port_set_tx_coal(struct mv643xx_private *mp,
|
|
unsigned int delay)
|
|
{
|
|
unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
|
|
|
|
/* Set TX Coalescing mechanism */
|
|
wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), coal << 4);
|
|
|
|
return coal;
|
|
}
|
|
|
|
/*
|
|
* eth_port_init - Initialize the Ethernet port driver
|
|
*
|
|
* DESCRIPTION:
|
|
* This function prepares the ethernet port to start its activity:
|
|
* 1) Completes the ethernet port driver struct initialization toward port
|
|
* start routine.
|
|
* 2) Resets the device to a quiescent state in case of warm reboot.
|
|
* 3) Enable SDMA access to all four DRAM banks as well as internal SRAM.
|
|
* 4) Clean MAC tables. The reset status of those tables is unknown.
|
|
* 5) Set PHY address.
|
|
* Note: Call this routine prior to eth_port_start routine and after
|
|
* setting user values in the user fields of Ethernet port control
|
|
* struct.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet port control struct
|
|
*
|
|
* OUTPUT:
|
|
* See description.
|
|
*
|
|
* RETURN:
|
|
* None.
|
|
*/
|
|
static void eth_port_init(struct mv643xx_private *mp)
|
|
{
|
|
mp->rx_resource_err = 0;
|
|
|
|
eth_port_reset(mp);
|
|
|
|
eth_port_init_mac_tables(mp);
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_open
|
|
*
|
|
* This function is called when openning the network device. The function
|
|
* should initialize all the hardware, initialize cyclic Rx/Tx
|
|
* descriptors chain and buffers and allocate an IRQ to the network
|
|
* device.
|
|
*
|
|
* Input : a pointer to the network device structure
|
|
*
|
|
* Output : zero of success , nonzero if fails.
|
|
*/
|
|
|
|
static int mv643xx_eth_open(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
unsigned int port_num = mp->port_num;
|
|
unsigned int size;
|
|
int err;
|
|
|
|
/* Clear any pending ethernet port interrupts */
|
|
wrl(mp, INT_CAUSE(port_num), 0);
|
|
wrl(mp, INT_CAUSE_EXT(port_num), 0);
|
|
/* wait for previous write to complete */
|
|
rdl(mp, INT_CAUSE_EXT(port_num));
|
|
|
|
err = request_irq(dev->irq, mv643xx_eth_int_handler,
|
|
IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: Can not assign IRQ\n", dev->name);
|
|
return -EAGAIN;
|
|
}
|
|
|
|
eth_port_init(mp);
|
|
|
|
memset(&mp->timeout, 0, sizeof(struct timer_list));
|
|
mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper;
|
|
mp->timeout.data = (unsigned long)dev;
|
|
|
|
/* Allocate RX and TX skb rings */
|
|
mp->rx_skb = kmalloc(sizeof(*mp->rx_skb) * mp->rx_ring_size,
|
|
GFP_KERNEL);
|
|
if (!mp->rx_skb) {
|
|
printk(KERN_ERR "%s: Cannot allocate Rx skb ring\n", dev->name);
|
|
err = -ENOMEM;
|
|
goto out_free_irq;
|
|
}
|
|
mp->tx_skb = kmalloc(sizeof(*mp->tx_skb) * mp->tx_ring_size,
|
|
GFP_KERNEL);
|
|
if (!mp->tx_skb) {
|
|
printk(KERN_ERR "%s: Cannot allocate Tx skb ring\n", dev->name);
|
|
err = -ENOMEM;
|
|
goto out_free_rx_skb;
|
|
}
|
|
|
|
/* Allocate TX ring */
|
|
mp->tx_desc_count = 0;
|
|
size = mp->tx_ring_size * sizeof(struct eth_tx_desc);
|
|
mp->tx_desc_area_size = size;
|
|
|
|
if (mp->tx_sram_size) {
|
|
mp->p_tx_desc_area = ioremap(mp->tx_sram_addr,
|
|
mp->tx_sram_size);
|
|
mp->tx_desc_dma = mp->tx_sram_addr;
|
|
} else
|
|
mp->p_tx_desc_area = dma_alloc_coherent(NULL, size,
|
|
&mp->tx_desc_dma,
|
|
GFP_KERNEL);
|
|
|
|
if (!mp->p_tx_desc_area) {
|
|
printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n",
|
|
dev->name, size);
|
|
err = -ENOMEM;
|
|
goto out_free_tx_skb;
|
|
}
|
|
BUG_ON((u32) mp->p_tx_desc_area & 0xf); /* check 16-byte alignment */
|
|
memset((void *)mp->p_tx_desc_area, 0, mp->tx_desc_area_size);
|
|
|
|
ether_init_tx_desc_ring(mp);
|
|
|
|
/* Allocate RX ring */
|
|
mp->rx_desc_count = 0;
|
|
size = mp->rx_ring_size * sizeof(struct eth_rx_desc);
|
|
mp->rx_desc_area_size = size;
|
|
|
|
if (mp->rx_sram_size) {
|
|
mp->p_rx_desc_area = ioremap(mp->rx_sram_addr,
|
|
mp->rx_sram_size);
|
|
mp->rx_desc_dma = mp->rx_sram_addr;
|
|
} else
|
|
mp->p_rx_desc_area = dma_alloc_coherent(NULL, size,
|
|
&mp->rx_desc_dma,
|
|
GFP_KERNEL);
|
|
|
|
if (!mp->p_rx_desc_area) {
|
|
printk(KERN_ERR "%s: Cannot allocate Rx ring (size %d bytes)\n",
|
|
dev->name, size);
|
|
printk(KERN_ERR "%s: Freeing previously allocated TX queues...",
|
|
dev->name);
|
|
if (mp->rx_sram_size)
|
|
iounmap(mp->p_tx_desc_area);
|
|
else
|
|
dma_free_coherent(NULL, mp->tx_desc_area_size,
|
|
mp->p_tx_desc_area, mp->tx_desc_dma);
|
|
err = -ENOMEM;
|
|
goto out_free_tx_skb;
|
|
}
|
|
memset((void *)mp->p_rx_desc_area, 0, size);
|
|
|
|
ether_init_rx_desc_ring(mp);
|
|
|
|
mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
|
|
|
|
#ifdef MV643XX_NAPI
|
|
napi_enable(&mp->napi);
|
|
#endif
|
|
|
|
eth_port_start(dev);
|
|
|
|
/* Interrupt Coalescing */
|
|
|
|
#ifdef MV643XX_COAL
|
|
mp->rx_int_coal =
|
|
eth_port_set_rx_coal(mp, MV643XX_RX_COAL);
|
|
#endif
|
|
|
|
mp->tx_int_coal =
|
|
eth_port_set_tx_coal(mp, MV643XX_TX_COAL);
|
|
|
|
/* Unmask phy and link status changes interrupts */
|
|
wrl(mp, INT_MASK_EXT(port_num), INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
|
|
|
|
/* Unmask RX buffer and TX end interrupt */
|
|
wrl(mp, INT_MASK(port_num), INT_RX | INT_EXT);
|
|
|
|
return 0;
|
|
|
|
out_free_tx_skb:
|
|
kfree(mp->tx_skb);
|
|
out_free_rx_skb:
|
|
kfree(mp->rx_skb);
|
|
out_free_irq:
|
|
free_irq(dev->irq, dev);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* eth_port_reset - Reset Ethernet port
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine resets the chip by aborting any SDMA engine activity and
|
|
* clearing the MIB counters. The Receiver and the Transmit unit are in
|
|
* idle state after this command is performed and the port is disabled.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port.
|
|
*
|
|
* OUTPUT:
|
|
* Channel activity is halted.
|
|
*
|
|
* RETURN:
|
|
* None.
|
|
*
|
|
*/
|
|
static void eth_port_reset(struct mv643xx_private *mp)
|
|
{
|
|
unsigned int port_num = mp->port_num;
|
|
unsigned int reg_data;
|
|
|
|
mv643xx_eth_port_disable_tx(mp);
|
|
mv643xx_eth_port_disable_rx(mp);
|
|
|
|
/* Clear all MIB counters */
|
|
eth_clear_mib_counters(mp);
|
|
|
|
/* Reset the Enable bit in the Configuration Register */
|
|
reg_data = rdl(mp, PORT_SERIAL_CONTROL(port_num));
|
|
reg_data &= ~(SERIAL_PORT_ENABLE |
|
|
DO_NOT_FORCE_LINK_FAIL |
|
|
FORCE_LINK_PASS);
|
|
wrl(mp, PORT_SERIAL_CONTROL(port_num), reg_data);
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_stop
|
|
*
|
|
* This function is used when closing the network device.
|
|
* It updates the hardware,
|
|
* release all memory that holds buffers and descriptors and release the IRQ.
|
|
* Input : a pointer to the device structure
|
|
* Output : zero if success , nonzero if fails
|
|
*/
|
|
|
|
static int mv643xx_eth_stop(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
unsigned int port_num = mp->port_num;
|
|
|
|
/* Mask all interrupts on ethernet port */
|
|
wrl(mp, INT_MASK(port_num), 0x00000000);
|
|
/* wait for previous write to complete */
|
|
rdl(mp, INT_MASK(port_num));
|
|
|
|
#ifdef MV643XX_NAPI
|
|
napi_disable(&mp->napi);
|
|
#endif
|
|
netif_carrier_off(dev);
|
|
netif_stop_queue(dev);
|
|
|
|
eth_port_reset(mp);
|
|
|
|
mv643xx_eth_free_tx_rings(dev);
|
|
mv643xx_eth_free_rx_rings(dev);
|
|
|
|
free_irq(dev->irq, dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
|
|
return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
|
|
}
|
|
|
|
/*
|
|
* Changes MTU (maximum transfer unit) of the gigabit ethenret port
|
|
*
|
|
* Input : pointer to ethernet interface network device structure
|
|
* new mtu size
|
|
* Output : 0 upon success, -EINVAL upon failure
|
|
*/
|
|
static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
if ((new_mtu > 9500) || (new_mtu < 64))
|
|
return -EINVAL;
|
|
|
|
dev->mtu = new_mtu;
|
|
if (!netif_running(dev))
|
|
return 0;
|
|
|
|
/*
|
|
* Stop and then re-open the interface. This will allocate RX
|
|
* skbs of the new MTU.
|
|
* There is a possible danger that the open will not succeed,
|
|
* due to memory being full, which might fail the open function.
|
|
*/
|
|
mv643xx_eth_stop(dev);
|
|
if (mv643xx_eth_open(dev)) {
|
|
printk(KERN_ERR "%s: Fatal error on opening device\n",
|
|
dev->name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_tx_timeout_task
|
|
*
|
|
* Actual routine to reset the adapter when a timeout on Tx has occurred
|
|
*/
|
|
static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly)
|
|
{
|
|
struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private,
|
|
tx_timeout_task);
|
|
struct net_device *dev = mp->dev;
|
|
|
|
if (!netif_running(dev))
|
|
return;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
eth_port_reset(mp);
|
|
eth_port_start(dev);
|
|
|
|
if (mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
/*
|
|
* mv643xx_eth_tx_timeout
|
|
*
|
|
* Called upon a timeout on transmitting a packet
|
|
*
|
|
* Input : pointer to ethernet interface network device structure.
|
|
* Output : N/A
|
|
*/
|
|
static void mv643xx_eth_tx_timeout(struct net_device *dev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
|
|
printk(KERN_INFO "%s: TX timeout ", dev->name);
|
|
|
|
/* Do the reset outside of interrupt context */
|
|
schedule_work(&mp->tx_timeout_task);
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static void mv643xx_netpoll(struct net_device *netdev)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(netdev);
|
|
int port_num = mp->port_num;
|
|
|
|
wrl(mp, INT_MASK(port_num), 0x00000000);
|
|
/* wait for previous write to complete */
|
|
rdl(mp, INT_MASK(port_num));
|
|
|
|
mv643xx_eth_int_handler(netdev->irq, netdev);
|
|
|
|
wrl(mp, INT_MASK(port_num), INT_RX | INT_CAUSE_EXT);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Wrappers for MII support library.
|
|
*/
|
|
static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
int val;
|
|
|
|
eth_port_read_smi_reg(mp, location, &val);
|
|
return val;
|
|
}
|
|
|
|
static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
eth_port_write_smi_reg(mp, location, val);
|
|
}
|
|
|
|
|
|
/* platform glue ************************************************************/
|
|
static void mv643xx_eth_conf_mbus_windows(struct mv643xx_shared_private *msp,
|
|
struct mbus_dram_target_info *dram)
|
|
{
|
|
void __iomem *base = msp->eth_base;
|
|
u32 win_enable;
|
|
u32 win_protect;
|
|
int i;
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
writel(0, base + WINDOW_BASE(i));
|
|
writel(0, base + WINDOW_SIZE(i));
|
|
if (i < 4)
|
|
writel(0, base + WINDOW_REMAP_HIGH(i));
|
|
}
|
|
|
|
win_enable = 0x3f;
|
|
win_protect = 0;
|
|
|
|
for (i = 0; i < dram->num_cs; i++) {
|
|
struct mbus_dram_window *cs = dram->cs + i;
|
|
|
|
writel((cs->base & 0xffff0000) |
|
|
(cs->mbus_attr << 8) |
|
|
dram->mbus_dram_target_id, base + WINDOW_BASE(i));
|
|
writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
|
|
|
|
win_enable &= ~(1 << i);
|
|
win_protect |= 3 << (2 * i);
|
|
}
|
|
|
|
writel(win_enable, base + WINDOW_BAR_ENABLE);
|
|
msp->win_protect = win_protect;
|
|
}
|
|
|
|
static int mv643xx_eth_shared_probe(struct platform_device *pdev)
|
|
{
|
|
static int mv643xx_version_printed = 0;
|
|
struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
|
|
struct mv643xx_shared_private *msp;
|
|
struct resource *res;
|
|
int ret;
|
|
|
|
if (!mv643xx_version_printed++)
|
|
printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
|
|
|
|
ret = -EINVAL;
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (res == NULL)
|
|
goto out;
|
|
|
|
ret = -ENOMEM;
|
|
msp = kmalloc(sizeof(*msp), GFP_KERNEL);
|
|
if (msp == NULL)
|
|
goto out;
|
|
memset(msp, 0, sizeof(*msp));
|
|
|
|
msp->eth_base = ioremap(res->start, res->end - res->start + 1);
|
|
if (msp->eth_base == NULL)
|
|
goto out_free;
|
|
|
|
spin_lock_init(&msp->phy_lock);
|
|
msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
|
|
|
|
platform_set_drvdata(pdev, msp);
|
|
|
|
/*
|
|
* (Re-)program MBUS remapping windows if we are asked to.
|
|
*/
|
|
if (pd != NULL && pd->dram != NULL)
|
|
mv643xx_eth_conf_mbus_windows(msp, pd->dram);
|
|
|
|
return 0;
|
|
|
|
out_free:
|
|
kfree(msp);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int mv643xx_eth_shared_remove(struct platform_device *pdev)
|
|
{
|
|
struct mv643xx_shared_private *msp = platform_get_drvdata(pdev);
|
|
|
|
iounmap(msp->eth_base);
|
|
kfree(msp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver mv643xx_eth_shared_driver = {
|
|
.probe = mv643xx_eth_shared_probe,
|
|
.remove = mv643xx_eth_shared_remove,
|
|
.driver = {
|
|
.name = MV643XX_ETH_SHARED_NAME,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
/*
|
|
* ethernet_phy_set - Set the ethernet port PHY address.
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine sets the given ethernet port PHY address.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port.
|
|
* int phy_addr PHY address.
|
|
*
|
|
* OUTPUT:
|
|
* None.
|
|
*
|
|
* RETURN:
|
|
* None.
|
|
*
|
|
*/
|
|
static void ethernet_phy_set(struct mv643xx_private *mp, int phy_addr)
|
|
{
|
|
u32 reg_data;
|
|
int addr_shift = 5 * mp->port_num;
|
|
|
|
reg_data = rdl(mp, PHY_ADDR);
|
|
reg_data &= ~(0x1f << addr_shift);
|
|
reg_data |= (phy_addr & 0x1f) << addr_shift;
|
|
wrl(mp, PHY_ADDR, reg_data);
|
|
}
|
|
|
|
/*
|
|
* ethernet_phy_get - Get the ethernet port PHY address.
|
|
*
|
|
* DESCRIPTION:
|
|
* This routine returns the given ethernet port PHY address.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port.
|
|
*
|
|
* OUTPUT:
|
|
* None.
|
|
*
|
|
* RETURN:
|
|
* PHY address.
|
|
*
|
|
*/
|
|
static int ethernet_phy_get(struct mv643xx_private *mp)
|
|
{
|
|
unsigned int reg_data;
|
|
|
|
reg_data = rdl(mp, PHY_ADDR);
|
|
|
|
return ((reg_data >> (5 * mp->port_num)) & 0x1f);
|
|
}
|
|
|
|
/*
|
|
* ethernet_phy_detect - Detect whether a phy is present
|
|
*
|
|
* DESCRIPTION:
|
|
* This function tests whether there is a PHY present on
|
|
* the specified port.
|
|
*
|
|
* INPUT:
|
|
* struct mv643xx_private *mp Ethernet Port.
|
|
*
|
|
* OUTPUT:
|
|
* None
|
|
*
|
|
* RETURN:
|
|
* 0 on success
|
|
* -ENODEV on failure
|
|
*
|
|
*/
|
|
static int ethernet_phy_detect(struct mv643xx_private *mp)
|
|
{
|
|
unsigned int phy_reg_data0;
|
|
int auto_neg;
|
|
|
|
eth_port_read_smi_reg(mp, 0, &phy_reg_data0);
|
|
auto_neg = phy_reg_data0 & 0x1000;
|
|
phy_reg_data0 ^= 0x1000; /* invert auto_neg */
|
|
eth_port_write_smi_reg(mp, 0, phy_reg_data0);
|
|
|
|
eth_port_read_smi_reg(mp, 0, &phy_reg_data0);
|
|
if ((phy_reg_data0 & 0x1000) == auto_neg)
|
|
return -ENODEV; /* change didn't take */
|
|
|
|
phy_reg_data0 ^= 0x1000;
|
|
eth_port_write_smi_reg(mp, 0, phy_reg_data0);
|
|
return 0;
|
|
}
|
|
|
|
static void mv643xx_init_ethtool_cmd(struct net_device *dev, int phy_address,
|
|
int speed, int duplex,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
|
|
memset(cmd, 0, sizeof(*cmd));
|
|
|
|
cmd->port = PORT_MII;
|
|
cmd->transceiver = XCVR_INTERNAL;
|
|
cmd->phy_address = phy_address;
|
|
|
|
if (speed == 0) {
|
|
cmd->autoneg = AUTONEG_ENABLE;
|
|
/* mii lib checks, but doesn't use speed on AUTONEG_ENABLE */
|
|
cmd->speed = SPEED_100;
|
|
cmd->advertising = ADVERTISED_10baseT_Half |
|
|
ADVERTISED_10baseT_Full |
|
|
ADVERTISED_100baseT_Half |
|
|
ADVERTISED_100baseT_Full;
|
|
if (mp->mii.supports_gmii)
|
|
cmd->advertising |= ADVERTISED_1000baseT_Full;
|
|
} else {
|
|
cmd->autoneg = AUTONEG_DISABLE;
|
|
cmd->speed = speed;
|
|
cmd->duplex = duplex;
|
|
}
|
|
}
|
|
|
|
/*/
|
|
* mv643xx_eth_probe
|
|
*
|
|
* First function called after registering the network device.
|
|
* It's purpose is to initialize the device as an ethernet device,
|
|
* fill the ethernet device structure with pointers * to functions,
|
|
* and set the MAC address of the interface
|
|
*
|
|
* Input : struct device *
|
|
* Output : -ENOMEM if failed , 0 if success
|
|
*/
|
|
static int mv643xx_eth_probe(struct platform_device *pdev)
|
|
{
|
|
struct mv643xx_eth_platform_data *pd;
|
|
int port_num;
|
|
struct mv643xx_private *mp;
|
|
struct net_device *dev;
|
|
u8 *p;
|
|
struct resource *res;
|
|
int err;
|
|
struct ethtool_cmd cmd;
|
|
int duplex = DUPLEX_HALF;
|
|
int speed = 0; /* default to auto-negotiation */
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
pd = pdev->dev.platform_data;
|
|
if (pd == NULL) {
|
|
printk(KERN_ERR "No mv643xx_eth_platform_data\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (pd->shared == NULL) {
|
|
printk(KERN_ERR "No mv643xx_eth_platform_data->shared\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
dev = alloc_etherdev(sizeof(struct mv643xx_private));
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(pdev, dev);
|
|
|
|
mp = netdev_priv(dev);
|
|
mp->dev = dev;
|
|
#ifdef MV643XX_NAPI
|
|
netif_napi_add(dev, &mp->napi, mv643xx_poll, 64);
|
|
#endif
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
|
BUG_ON(!res);
|
|
dev->irq = res->start;
|
|
|
|
dev->open = mv643xx_eth_open;
|
|
dev->stop = mv643xx_eth_stop;
|
|
dev->hard_start_xmit = mv643xx_eth_start_xmit;
|
|
dev->set_mac_address = mv643xx_eth_set_mac_address;
|
|
dev->set_multicast_list = mv643xx_eth_set_rx_mode;
|
|
|
|
/* No need to Tx Timeout */
|
|
dev->tx_timeout = mv643xx_eth_tx_timeout;
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
dev->poll_controller = mv643xx_netpoll;
|
|
#endif
|
|
|
|
dev->watchdog_timeo = 2 * HZ;
|
|
dev->base_addr = 0;
|
|
dev->change_mtu = mv643xx_eth_change_mtu;
|
|
dev->do_ioctl = mv643xx_eth_do_ioctl;
|
|
SET_ETHTOOL_OPS(dev, &mv643xx_ethtool_ops);
|
|
|
|
#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
|
|
#ifdef MAX_SKB_FRAGS
|
|
/*
|
|
* Zero copy can only work if we use Discovery II memory. Else, we will
|
|
* have to map the buffers to ISA memory which is only 16 MB
|
|
*/
|
|
dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
|
|
#endif
|
|
#endif
|
|
|
|
/* Configure the timeout task */
|
|
INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task);
|
|
|
|
spin_lock_init(&mp->lock);
|
|
|
|
mp->shared = platform_get_drvdata(pd->shared);
|
|
port_num = mp->port_num = pd->port_number;
|
|
|
|
if (mp->shared->win_protect)
|
|
wrl(mp, WINDOW_PROTECT(port_num), mp->shared->win_protect);
|
|
|
|
mp->shared_smi = mp->shared;
|
|
if (pd->shared_smi != NULL)
|
|
mp->shared_smi = platform_get_drvdata(pd->shared_smi);
|
|
|
|
/* set default config values */
|
|
eth_port_uc_addr_get(mp, dev->dev_addr);
|
|
mp->rx_ring_size = PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
|
|
mp->tx_ring_size = PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
|
|
|
|
if (is_valid_ether_addr(pd->mac_addr))
|
|
memcpy(dev->dev_addr, pd->mac_addr, 6);
|
|
|
|
if (pd->phy_addr || pd->force_phy_addr)
|
|
ethernet_phy_set(mp, pd->phy_addr);
|
|
|
|
if (pd->rx_queue_size)
|
|
mp->rx_ring_size = pd->rx_queue_size;
|
|
|
|
if (pd->tx_queue_size)
|
|
mp->tx_ring_size = pd->tx_queue_size;
|
|
|
|
if (pd->tx_sram_size) {
|
|
mp->tx_sram_size = pd->tx_sram_size;
|
|
mp->tx_sram_addr = pd->tx_sram_addr;
|
|
}
|
|
|
|
if (pd->rx_sram_size) {
|
|
mp->rx_sram_size = pd->rx_sram_size;
|
|
mp->rx_sram_addr = pd->rx_sram_addr;
|
|
}
|
|
|
|
duplex = pd->duplex;
|
|
speed = pd->speed;
|
|
|
|
/* Hook up MII support for ethtool */
|
|
mp->mii.dev = dev;
|
|
mp->mii.mdio_read = mv643xx_mdio_read;
|
|
mp->mii.mdio_write = mv643xx_mdio_write;
|
|
mp->mii.phy_id = ethernet_phy_get(mp);
|
|
mp->mii.phy_id_mask = 0x3f;
|
|
mp->mii.reg_num_mask = 0x1f;
|
|
|
|
err = ethernet_phy_detect(mp);
|
|
if (err) {
|
|
pr_debug("%s: No PHY detected at addr %d\n",
|
|
dev->name, ethernet_phy_get(mp));
|
|
goto out;
|
|
}
|
|
|
|
ethernet_phy_reset(mp);
|
|
mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
|
|
mv643xx_init_ethtool_cmd(dev, mp->mii.phy_id, speed, duplex, &cmd);
|
|
mv643xx_eth_update_pscr(dev, &cmd);
|
|
mv643xx_set_settings(dev, &cmd);
|
|
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
err = register_netdev(dev);
|
|
if (err)
|
|
goto out;
|
|
|
|
p = dev->dev_addr;
|
|
printk(KERN_NOTICE
|
|
"%s: port %d with MAC address %s\n",
|
|
dev->name, port_num, print_mac(mac, p));
|
|
|
|
if (dev->features & NETIF_F_SG)
|
|
printk(KERN_NOTICE "%s: Scatter Gather Enabled\n", dev->name);
|
|
|
|
if (dev->features & NETIF_F_IP_CSUM)
|
|
printk(KERN_NOTICE "%s: TX TCP/IP Checksumming Supported\n",
|
|
dev->name);
|
|
|
|
#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
|
|
printk(KERN_NOTICE "%s: RX TCP/UDP Checksum Offload ON \n", dev->name);
|
|
#endif
|
|
|
|
#ifdef MV643XX_COAL
|
|
printk(KERN_NOTICE "%s: TX and RX Interrupt Coalescing ON \n",
|
|
dev->name);
|
|
#endif
|
|
|
|
#ifdef MV643XX_NAPI
|
|
printk(KERN_NOTICE "%s: RX NAPI Enabled \n", dev->name);
|
|
#endif
|
|
|
|
if (mp->tx_sram_size > 0)
|
|
printk(KERN_NOTICE "%s: Using SRAM\n", dev->name);
|
|
|
|
return 0;
|
|
|
|
out:
|
|
free_netdev(dev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mv643xx_eth_remove(struct platform_device *pdev)
|
|
{
|
|
struct net_device *dev = platform_get_drvdata(pdev);
|
|
|
|
unregister_netdev(dev);
|
|
flush_scheduled_work();
|
|
|
|
free_netdev(dev);
|
|
platform_set_drvdata(pdev, NULL);
|
|
return 0;
|
|
}
|
|
|
|
static void mv643xx_eth_shutdown(struct platform_device *pdev)
|
|
{
|
|
struct net_device *dev = platform_get_drvdata(pdev);
|
|
struct mv643xx_private *mp = netdev_priv(dev);
|
|
unsigned int port_num = mp->port_num;
|
|
|
|
/* Mask all interrupts on ethernet port */
|
|
wrl(mp, INT_MASK(port_num), 0);
|
|
rdl(mp, INT_MASK(port_num));
|
|
|
|
eth_port_reset(mp);
|
|
}
|
|
|
|
static struct platform_driver mv643xx_eth_driver = {
|
|
.probe = mv643xx_eth_probe,
|
|
.remove = mv643xx_eth_remove,
|
|
.shutdown = mv643xx_eth_shutdown,
|
|
.driver = {
|
|
.name = MV643XX_ETH_NAME,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
/*
|
|
* mv643xx_init_module
|
|
*
|
|
* Registers the network drivers into the Linux kernel
|
|
*
|
|
* Input : N/A
|
|
*
|
|
* Output : N/A
|
|
*/
|
|
static int __init mv643xx_init_module(void)
|
|
{
|
|
int rc;
|
|
|
|
rc = platform_driver_register(&mv643xx_eth_shared_driver);
|
|
if (!rc) {
|
|
rc = platform_driver_register(&mv643xx_eth_driver);
|
|
if (rc)
|
|
platform_driver_unregister(&mv643xx_eth_shared_driver);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* mv643xx_cleanup_module
|
|
*
|
|
* Registers the network drivers into the Linux kernel
|
|
*
|
|
* Input : N/A
|
|
*
|
|
* Output : N/A
|
|
*/
|
|
static void __exit mv643xx_cleanup_module(void)
|
|
{
|
|
platform_driver_unregister(&mv643xx_eth_driver);
|
|
platform_driver_unregister(&mv643xx_eth_shared_driver);
|
|
}
|
|
|
|
module_init(mv643xx_init_module);
|
|
module_exit(mv643xx_cleanup_module);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR( "Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani"
|
|
" and Dale Farnsworth");
|
|
MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
|
|
MODULE_ALIAS("platform:" MV643XX_ETH_NAME);
|
|
MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
|