abe787170b
The mv643xx_eth hardware ignores the lower three bits of the buffer size field in receive descriptors, causing the reception of full-sized packets to fail at some MTUs. Fix this by rounding the size of allocated receive buffers up to a multiple of eight bytes. While we are at it, add a bit of extra space to each receive buffer so that we can handle multiple vlan tags on ingress. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
2698 lines
65 KiB
C
2698 lines
65 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_eth_driver_name[] = "mv643xx_eth";
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static char mv643xx_eth_driver_version[] = "1.2";
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#define MV643XX_ETH_CHECKSUM_OFFLOAD_TX
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#define MV643XX_ETH_NAPI
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#define MV643XX_ETH_TX_FAST_REFILL
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#ifdef MV643XX_ETH_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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/*
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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 TX_FIFO_EMPTY 0x00000400
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#define TX_IN_PROGRESS 0x00000080
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#define PORT_SPEED_MASK 0x00000030
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#define PORT_SPEED_1000 0x00000010
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#define PORT_SPEED_100 0x00000020
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#define PORT_SPEED_10 0x00000000
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#define FLOW_CONTROL_ENABLED 0x00000008
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#define FULL_DUPLEX 0x00000004
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#define LINK_UP 0x00000002
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#define TXQ_COMMAND(p) (0x0448 + ((p) << 10))
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#define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10))
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#define TX_BW_RATE(p) (0x0450 + ((p) << 10))
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#define TX_BW_MTU(p) (0x0458 + ((p) << 10))
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#define TX_BW_BURST(p) (0x045c + ((p) << 10))
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#define INT_CAUSE(p) (0x0460 + ((p) << 10))
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#define INT_TX_END_0 0x00080000
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#define INT_TX_END 0x07f80000
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#define INT_RX 0x0007fbfc
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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 0x0000ffff
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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 TXQ_FIX_PRIO_CONF_MOVED(p) (0x04dc + ((p) << 10))
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#define TX_BW_RATE_MOVED(p) (0x04e0 + ((p) << 10))
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#define TX_BW_MTU_MOVED(p) (0x04e8 + ((p) << 10))
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#define TX_BW_BURST_MOVED(p) (0x04ec + ((p) << 10))
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#define RXQ_CURRENT_DESC_PTR(p, q) (0x060c + ((p) << 10) + ((q) << 4))
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#define RXQ_COMMAND(p) (0x0680 + ((p) << 10))
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#define TXQ_CURRENT_DESC_PTR(p, q) (0x06c0 + ((p) << 10) + ((q) << 2))
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#define TXQ_BW_TOKENS(p, q) (0x0700 + ((p) << 10) + ((q) << 4))
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#define TXQ_BW_CONF(p, q) (0x0704 + ((p) << 10) + ((q) << 4))
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#define TXQ_BW_WRR_CONF(p, q) (0x0708 + ((p) << 10) + ((q) << 4))
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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_16_64BIT (4 << 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_16_64BIT (4 << 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_16_64BIT | \
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TX_BURST_SIZE_16_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_16_64BIT | \
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BLM_RX_NO_SWAP | \
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BLM_TX_NO_SWAP | \
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TX_BURST_SIZE_16_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_9700BYTE (5 << 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 DEFAULT_RX_QUEUE_SIZE 400
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#define DEFAULT_TX_QUEUE_SIZE 800
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/*
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* RX/TX descriptors.
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*/
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#if defined(__BIG_ENDIAN)
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struct 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 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 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 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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/* RX & TX descriptor command */
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#define BUFFER_OWNED_BY_DMA 0x80000000
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/* RX & TX descriptor status */
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#define ERROR_SUMMARY 0x00000001
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/* RX descriptor status */
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#define LAYER_4_CHECKSUM_OK 0x40000000
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#define RX_ENABLE_INTERRUPT 0x20000000
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#define RX_FIRST_DESC 0x08000000
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#define RX_LAST_DESC 0x04000000
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/* TX descriptor command */
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#define TX_ENABLE_INTERRUPT 0x00800000
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#define GEN_CRC 0x00400000
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#define TX_FIRST_DESC 0x00200000
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#define TX_LAST_DESC 0x00100000
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#define ZERO_PADDING 0x00080000
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#define GEN_IP_V4_CHECKSUM 0x00040000
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#define GEN_TCP_UDP_CHECKSUM 0x00020000
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#define UDP_FRAME 0x00010000
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#define MAC_HDR_EXTRA_4_BYTES 0x00008000
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#define MAC_HDR_EXTRA_8_BYTES 0x00000200
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#define TX_IHL_SHIFT 11
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/* global *******************************************************************/
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struct mv643xx_eth_shared_private {
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/*
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* Ethernet controller base address.
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*/
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void __iomem *base;
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/*
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* Protects access to SMI_REG, which is shared between ports.
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*/
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spinlock_t phy_lock;
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/*
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* Per-port MBUS window access register value.
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*/
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u32 win_protect;
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/*
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* Hardware-specific parameters.
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*/
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unsigned int t_clk;
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int extended_rx_coal_limit;
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int tx_bw_control_moved;
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};
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/* per-port *****************************************************************/
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struct 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 rx_queue {
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int index;
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int rx_ring_size;
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int rx_desc_count;
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int rx_curr_desc;
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int rx_used_desc;
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struct rx_desc *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 timer_list rx_oom;
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};
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struct tx_queue {
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int index;
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int tx_ring_size;
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int tx_desc_count;
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int tx_curr_desc;
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int tx_used_desc;
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struct tx_desc *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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};
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struct mv643xx_eth_private {
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struct mv643xx_eth_shared_private *shared;
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int port_num;
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struct net_device *dev;
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struct mv643xx_eth_shared_private *shared_smi;
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int phy_addr;
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spinlock_t lock;
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struct mib_counters mib_counters;
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struct work_struct tx_timeout_task;
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struct mii_if_info mii;
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/*
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* RX state.
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*/
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int default_rx_ring_size;
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unsigned long rx_desc_sram_addr;
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int rx_desc_sram_size;
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u8 rxq_mask;
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int rxq_primary;
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struct napi_struct napi;
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struct rx_queue rxq[8];
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/*
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* TX state.
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*/
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int default_tx_ring_size;
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unsigned long tx_desc_sram_addr;
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int tx_desc_sram_size;
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u8 txq_mask;
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int txq_primary;
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struct tx_queue txq[8];
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#ifdef MV643XX_ETH_TX_FAST_REFILL
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int tx_clean_threshold;
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#endif
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};
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/* port register accessors **************************************************/
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static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
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{
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return readl(mp->shared->base + offset);
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}
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static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
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{
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writel(data, mp->shared->base + offset);
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}
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/* rxq/txq helper functions *************************************************/
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static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
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{
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return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
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}
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static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
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{
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return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
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}
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static void rxq_enable(struct rx_queue *rxq)
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{
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struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
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wrl(mp, RXQ_COMMAND(mp->port_num), 1 << rxq->index);
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}
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static void rxq_disable(struct rx_queue *rxq)
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{
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struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
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u8 mask = 1 << rxq->index;
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wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8);
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while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask)
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udelay(10);
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}
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static void txq_reset_hw_ptr(struct tx_queue *txq)
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{
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struct mv643xx_eth_private *mp = txq_to_mp(txq);
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int off = TXQ_CURRENT_DESC_PTR(mp->port_num, txq->index);
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u32 addr;
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addr = (u32)txq->tx_desc_dma;
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addr += txq->tx_curr_desc * sizeof(struct tx_desc);
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wrl(mp, off, addr);
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}
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static void txq_enable(struct tx_queue *txq)
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{
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struct mv643xx_eth_private *mp = txq_to_mp(txq);
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wrl(mp, TXQ_COMMAND(mp->port_num), 1 << txq->index);
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}
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static void txq_disable(struct tx_queue *txq)
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{
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struct mv643xx_eth_private *mp = txq_to_mp(txq);
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u8 mask = 1 << txq->index;
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wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8);
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while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask)
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udelay(10);
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}
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static void __txq_maybe_wake(struct tx_queue *txq)
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{
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struct mv643xx_eth_private *mp = txq_to_mp(txq);
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/*
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* netif_{stop,wake}_queue() flow control only applies to
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* the primary queue.
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*/
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BUG_ON(txq->index != mp->txq_primary);
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if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB)
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netif_wake_queue(mp->dev);
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}
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/* rx ***********************************************************************/
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static void txq_reclaim(struct tx_queue *txq, int force);
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static void rxq_refill(struct rx_queue *rxq)
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{
|
|
struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&mp->lock, flags);
|
|
|
|
while (rxq->rx_desc_count < rxq->rx_ring_size) {
|
|
int skb_size;
|
|
struct sk_buff *skb;
|
|
int unaligned;
|
|
int rx;
|
|
|
|
/*
|
|
* Reserve 2+14 bytes for an ethernet header (the
|
|
* hardware automatically prepends 2 bytes of dummy
|
|
* data to each received packet), 16 bytes for up to
|
|
* four VLAN tags, and 4 bytes for the trailing FCS
|
|
* -- 36 bytes total.
|
|
*/
|
|
skb_size = mp->dev->mtu + 36;
|
|
|
|
/*
|
|
* Make sure that the skb size is a multiple of 8
|
|
* bytes, as the lower three bits of the receive
|
|
* descriptor's buffer size field are ignored by
|
|
* the hardware.
|
|
*/
|
|
skb_size = (skb_size + 7) & ~7;
|
|
|
|
skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1);
|
|
if (skb == NULL)
|
|
break;
|
|
|
|
unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
|
|
if (unaligned)
|
|
skb_reserve(skb, dma_get_cache_alignment() - unaligned);
|
|
|
|
rxq->rx_desc_count++;
|
|
rx = rxq->rx_used_desc;
|
|
rxq->rx_used_desc = (rx + 1) % rxq->rx_ring_size;
|
|
|
|
rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data,
|
|
skb_size, DMA_FROM_DEVICE);
|
|
rxq->rx_desc_area[rx].buf_size = skb_size;
|
|
rxq->rx_skb[rx] = skb;
|
|
wmb();
|
|
rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA |
|
|
RX_ENABLE_INTERRUPT;
|
|
wmb();
|
|
|
|
/*
|
|
* The hardware automatically prepends 2 bytes of
|
|
* dummy data to each received packet, so that the
|
|
* IP header ends up 16-byte aligned.
|
|
*/
|
|
skb_reserve(skb, 2);
|
|
}
|
|
|
|
if (rxq->rx_desc_count != rxq->rx_ring_size)
|
|
mod_timer(&rxq->rx_oom, jiffies + (HZ / 10));
|
|
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
}
|
|
|
|
static inline void rxq_refill_timer_wrapper(unsigned long data)
|
|
{
|
|
rxq_refill((struct rx_queue *)data);
|
|
}
|
|
|
|
static int rxq_process(struct rx_queue *rxq, int budget)
|
|
{
|
|
struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
|
|
struct net_device_stats *stats = &mp->dev->stats;
|
|
int rx;
|
|
|
|
rx = 0;
|
|
while (rx < budget && rxq->rx_desc_count) {
|
|
struct rx_desc *rx_desc;
|
|
unsigned int cmd_sts;
|
|
struct sk_buff *skb;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&mp->lock, flags);
|
|
|
|
rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
|
|
|
|
cmd_sts = rx_desc->cmd_sts;
|
|
if (cmd_sts & BUFFER_OWNED_BY_DMA) {
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
break;
|
|
}
|
|
rmb();
|
|
|
|
skb = rxq->rx_skb[rxq->rx_curr_desc];
|
|
rxq->rx_skb[rxq->rx_curr_desc] = NULL;
|
|
|
|
rxq->rx_curr_desc = (rxq->rx_curr_desc + 1) % rxq->rx_ring_size;
|
|
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
|
|
dma_unmap_single(NULL, rx_desc->buf_ptr + 2,
|
|
rx_desc->buf_size, DMA_FROM_DEVICE);
|
|
rxq->rx_desc_count--;
|
|
rx++;
|
|
|
|
/*
|
|
* Update statistics.
|
|
*
|
|
* Note that the descriptor byte count includes 2 dummy
|
|
* bytes automatically inserted by the hardware at the
|
|
* start of the packet (which we don't count), and a 4
|
|
* byte CRC at the end of the packet (which we do count).
|
|
*/
|
|
stats->rx_packets++;
|
|
stats->rx_bytes += rx_desc->byte_cnt - 2;
|
|
|
|
/*
|
|
* In case we received a packet without first / last bits
|
|
* on, or the error summary bit is set, the packet needs
|
|
* to be dropped.
|
|
*/
|
|
if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
|
|
(RX_FIRST_DESC | RX_LAST_DESC))
|
|
|| (cmd_sts & ERROR_SUMMARY)) {
|
|
stats->rx_dropped++;
|
|
|
|
if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
|
|
(RX_FIRST_DESC | RX_LAST_DESC)) {
|
|
if (net_ratelimit())
|
|
dev_printk(KERN_ERR, &mp->dev->dev,
|
|
"received packet spanning "
|
|
"multiple descriptors\n");
|
|
}
|
|
|
|
if (cmd_sts & 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, rx_desc->byte_cnt - 2 - 4);
|
|
|
|
if (cmd_sts & LAYER_4_CHECKSUM_OK) {
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
skb->csum = htons(
|
|
(cmd_sts & 0x0007fff8) >> 3);
|
|
}
|
|
skb->protocol = eth_type_trans(skb, mp->dev);
|
|
#ifdef MV643XX_ETH_NAPI
|
|
netif_receive_skb(skb);
|
|
#else
|
|
netif_rx(skb);
|
|
#endif
|
|
}
|
|
|
|
mp->dev->last_rx = jiffies;
|
|
}
|
|
|
|
rxq_refill(rxq);
|
|
|
|
return rx;
|
|
}
|
|
|
|
#ifdef MV643XX_ETH_NAPI
|
|
static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct mv643xx_eth_private *mp;
|
|
int rx;
|
|
int i;
|
|
|
|
mp = container_of(napi, struct mv643xx_eth_private, napi);
|
|
|
|
#ifdef MV643XX_ETH_TX_FAST_REFILL
|
|
if (++mp->tx_clean_threshold > 5) {
|
|
mp->tx_clean_threshold = 0;
|
|
for (i = 0; i < 8; i++)
|
|
if (mp->txq_mask & (1 << i))
|
|
txq_reclaim(mp->txq + i, 0);
|
|
|
|
if (netif_carrier_ok(mp->dev)) {
|
|
spin_lock_irq(&mp->lock);
|
|
__txq_maybe_wake(mp->txq + mp->txq_primary);
|
|
spin_unlock_irq(&mp->lock);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
rx = 0;
|
|
for (i = 7; rx < budget && i >= 0; i--)
|
|
if (mp->rxq_mask & (1 << i))
|
|
rx += rxq_process(mp->rxq + i, budget - rx);
|
|
|
|
if (rx < budget) {
|
|
netif_rx_complete(mp->dev, napi);
|
|
wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
|
|
}
|
|
|
|
return rx;
|
|
}
|
|
#endif
|
|
|
|
|
|
/* tx ***********************************************************************/
|
|
static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
|
|
{
|
|
int frag;
|
|
|
|
for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
|
|
skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
|
|
if (fragp->size <= 8 && fragp->page_offset & 7)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int txq_alloc_desc_index(struct tx_queue *txq)
|
|
{
|
|
int tx_desc_curr;
|
|
|
|
BUG_ON(txq->tx_desc_count >= txq->tx_ring_size);
|
|
|
|
tx_desc_curr = txq->tx_curr_desc;
|
|
txq->tx_curr_desc = (tx_desc_curr + 1) % txq->tx_ring_size;
|
|
|
|
BUG_ON(txq->tx_curr_desc == txq->tx_used_desc);
|
|
|
|
return tx_desc_curr;
|
|
}
|
|
|
|
static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
|
|
{
|
|
int nr_frags = skb_shinfo(skb)->nr_frags;
|
|
int frag;
|
|
|
|
for (frag = 0; frag < nr_frags; frag++) {
|
|
skb_frag_t *this_frag;
|
|
int tx_index;
|
|
struct tx_desc *desc;
|
|
|
|
this_frag = &skb_shinfo(skb)->frags[frag];
|
|
tx_index = txq_alloc_desc_index(txq);
|
|
desc = &txq->tx_desc_area[tx_index];
|
|
|
|
/*
|
|
* The last fragment will generate an interrupt
|
|
* which will free the skb on TX completion.
|
|
*/
|
|
if (frag == nr_frags - 1) {
|
|
desc->cmd_sts = BUFFER_OWNED_BY_DMA |
|
|
ZERO_PADDING | TX_LAST_DESC |
|
|
TX_ENABLE_INTERRUPT;
|
|
txq->tx_skb[tx_index] = skb;
|
|
} else {
|
|
desc->cmd_sts = BUFFER_OWNED_BY_DMA;
|
|
txq->tx_skb[tx_index] = NULL;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
|
|
{
|
|
struct mv643xx_eth_private *mp = txq_to_mp(txq);
|
|
int nr_frags = skb_shinfo(skb)->nr_frags;
|
|
int tx_index;
|
|
struct tx_desc *desc;
|
|
u32 cmd_sts;
|
|
int length;
|
|
|
|
cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
|
|
|
|
tx_index = txq_alloc_desc_index(txq);
|
|
desc = &txq->tx_desc_area[tx_index];
|
|
|
|
if (nr_frags) {
|
|
txq_submit_frag_skb(txq, skb);
|
|
|
|
length = skb_headlen(skb);
|
|
txq->tx_skb[tx_index] = NULL;
|
|
} else {
|
|
cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
|
|
length = skb->len;
|
|
txq->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) {
|
|
int mac_hdr_len;
|
|
|
|
BUG_ON(skb->protocol != htons(ETH_P_IP) &&
|
|
skb->protocol != htons(ETH_P_8021Q));
|
|
|
|
cmd_sts |= GEN_TCP_UDP_CHECKSUM |
|
|
GEN_IP_V4_CHECKSUM |
|
|
ip_hdr(skb)->ihl << TX_IHL_SHIFT;
|
|
|
|
mac_hdr_len = (void *)ip_hdr(skb) - (void *)skb->data;
|
|
switch (mac_hdr_len - ETH_HLEN) {
|
|
case 0:
|
|
break;
|
|
case 4:
|
|
cmd_sts |= MAC_HDR_EXTRA_4_BYTES;
|
|
break;
|
|
case 8:
|
|
cmd_sts |= MAC_HDR_EXTRA_8_BYTES;
|
|
break;
|
|
case 12:
|
|
cmd_sts |= MAC_HDR_EXTRA_4_BYTES;
|
|
cmd_sts |= MAC_HDR_EXTRA_8_BYTES;
|
|
break;
|
|
default:
|
|
if (net_ratelimit())
|
|
dev_printk(KERN_ERR, &txq_to_mp(txq)->dev->dev,
|
|
"mac header length is %d?!\n", mac_hdr_len);
|
|
break;
|
|
}
|
|
|
|
switch (ip_hdr(skb)->protocol) {
|
|
case IPPROTO_UDP:
|
|
cmd_sts |= 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 << TX_IHL_SHIFT;
|
|
desc->l4i_chk = 0;
|
|
}
|
|
|
|
/* ensure all other descriptors are written before first cmd_sts */
|
|
wmb();
|
|
desc->cmd_sts = cmd_sts;
|
|
|
|
/* clear TX_END interrupt status */
|
|
wrl(mp, INT_CAUSE(mp->port_num), ~(INT_TX_END_0 << txq->index));
|
|
rdl(mp, INT_CAUSE(mp->port_num));
|
|
|
|
/* ensure all descriptors are written before poking hardware */
|
|
wmb();
|
|
txq_enable(txq);
|
|
|
|
txq->tx_desc_count += nr_frags + 1;
|
|
}
|
|
|
|
static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
struct net_device_stats *stats = &dev->stats;
|
|
struct tx_queue *txq;
|
|
unsigned long flags;
|
|
|
|
if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
|
|
stats->tx_dropped++;
|
|
dev_printk(KERN_DEBUG, &dev->dev,
|
|
"failed to linearize skb with tiny "
|
|
"unaligned fragment\n");
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
spin_lock_irqsave(&mp->lock, flags);
|
|
|
|
txq = mp->txq + mp->txq_primary;
|
|
|
|
if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) {
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
if (txq->index == mp->txq_primary && net_ratelimit())
|
|
dev_printk(KERN_ERR, &dev->dev,
|
|
"primary tx queue full?!\n");
|
|
kfree_skb(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
txq_submit_skb(txq, skb);
|
|
stats->tx_bytes += skb->len;
|
|
stats->tx_packets++;
|
|
dev->trans_start = jiffies;
|
|
|
|
if (txq->index == mp->txq_primary) {
|
|
int entries_left;
|
|
|
|
entries_left = txq->tx_ring_size - txq->tx_desc_count;
|
|
if (entries_left < MAX_DESCS_PER_SKB)
|
|
netif_stop_queue(dev);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
|
|
/* tx rate control **********************************************************/
|
|
/*
|
|
* Set total maximum TX rate (shared by all TX queues for this port)
|
|
* to 'rate' bits per second, with a maximum burst of 'burst' bytes.
|
|
*/
|
|
static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
|
|
{
|
|
int token_rate;
|
|
int mtu;
|
|
int bucket_size;
|
|
|
|
token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
|
|
if (token_rate > 1023)
|
|
token_rate = 1023;
|
|
|
|
mtu = (mp->dev->mtu + 255) >> 8;
|
|
if (mtu > 63)
|
|
mtu = 63;
|
|
|
|
bucket_size = (burst + 255) >> 8;
|
|
if (bucket_size > 65535)
|
|
bucket_size = 65535;
|
|
|
|
if (mp->shared->tx_bw_control_moved) {
|
|
wrl(mp, TX_BW_RATE_MOVED(mp->port_num), token_rate);
|
|
wrl(mp, TX_BW_MTU_MOVED(mp->port_num), mtu);
|
|
wrl(mp, TX_BW_BURST_MOVED(mp->port_num), bucket_size);
|
|
} else {
|
|
wrl(mp, TX_BW_RATE(mp->port_num), token_rate);
|
|
wrl(mp, TX_BW_MTU(mp->port_num), mtu);
|
|
wrl(mp, TX_BW_BURST(mp->port_num), bucket_size);
|
|
}
|
|
}
|
|
|
|
static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
|
|
{
|
|
struct mv643xx_eth_private *mp = txq_to_mp(txq);
|
|
int token_rate;
|
|
int bucket_size;
|
|
|
|
token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
|
|
if (token_rate > 1023)
|
|
token_rate = 1023;
|
|
|
|
bucket_size = (burst + 255) >> 8;
|
|
if (bucket_size > 65535)
|
|
bucket_size = 65535;
|
|
|
|
wrl(mp, TXQ_BW_TOKENS(mp->port_num, txq->index), token_rate << 14);
|
|
wrl(mp, TXQ_BW_CONF(mp->port_num, txq->index),
|
|
(bucket_size << 10) | token_rate);
|
|
}
|
|
|
|
static void txq_set_fixed_prio_mode(struct tx_queue *txq)
|
|
{
|
|
struct mv643xx_eth_private *mp = txq_to_mp(txq);
|
|
int off;
|
|
u32 val;
|
|
|
|
/*
|
|
* Turn on fixed priority mode.
|
|
*/
|
|
if (mp->shared->tx_bw_control_moved)
|
|
off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
|
|
else
|
|
off = TXQ_FIX_PRIO_CONF(mp->port_num);
|
|
|
|
val = rdl(mp, off);
|
|
val |= 1 << txq->index;
|
|
wrl(mp, off, val);
|
|
}
|
|
|
|
static void txq_set_wrr(struct tx_queue *txq, int weight)
|
|
{
|
|
struct mv643xx_eth_private *mp = txq_to_mp(txq);
|
|
int off;
|
|
u32 val;
|
|
|
|
/*
|
|
* Turn off fixed priority mode.
|
|
*/
|
|
if (mp->shared->tx_bw_control_moved)
|
|
off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
|
|
else
|
|
off = TXQ_FIX_PRIO_CONF(mp->port_num);
|
|
|
|
val = rdl(mp, off);
|
|
val &= ~(1 << txq->index);
|
|
wrl(mp, off, val);
|
|
|
|
/*
|
|
* Configure WRR weight for this queue.
|
|
*/
|
|
off = TXQ_BW_WRR_CONF(mp->port_num, txq->index);
|
|
|
|
val = rdl(mp, off);
|
|
val = (val & ~0xff) | (weight & 0xff);
|
|
wrl(mp, off, val);
|
|
}
|
|
|
|
|
|
/* mii management interface *************************************************/
|
|
#define SMI_BUSY 0x10000000
|
|
#define SMI_READ_VALID 0x08000000
|
|
#define SMI_OPCODE_READ 0x04000000
|
|
#define SMI_OPCODE_WRITE 0x00000000
|
|
|
|
static void smi_reg_read(struct mv643xx_eth_private *mp, unsigned int addr,
|
|
unsigned int reg, unsigned int *value)
|
|
{
|
|
void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
|
|
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) & SMI_BUSY; i++) {
|
|
if (i == 1000) {
|
|
printk("%s: PHY busy timeout\n", mp->dev->name);
|
|
goto out;
|
|
}
|
|
udelay(10);
|
|
}
|
|
|
|
writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
|
|
|
|
/* now wait for the data to be valid */
|
|
for (i = 0; !(readl(smi_reg) & SMI_READ_VALID); i++) {
|
|
if (i == 1000) {
|
|
printk("%s: PHY read timeout\n", mp->dev->name);
|
|
goto out;
|
|
}
|
|
udelay(10);
|
|
}
|
|
|
|
*value = readl(smi_reg) & 0xffff;
|
|
out:
|
|
spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
|
|
}
|
|
|
|
static void smi_reg_write(struct mv643xx_eth_private *mp,
|
|
unsigned int addr,
|
|
unsigned int reg, unsigned int value)
|
|
{
|
|
void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
|
|
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) & SMI_BUSY; i++) {
|
|
if (i == 1000) {
|
|
printk("%s: PHY busy timeout\n", mp->dev->name);
|
|
goto out;
|
|
}
|
|
udelay(10);
|
|
}
|
|
|
|
writel(SMI_OPCODE_WRITE | (reg << 21) |
|
|
(addr << 16) | (value & 0xffff), smi_reg);
|
|
out:
|
|
spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
|
|
}
|
|
|
|
|
|
/* mib counters *************************************************************/
|
|
static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
|
|
{
|
|
return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
|
|
}
|
|
|
|
static void mib_counters_clear(struct mv643xx_eth_private *mp)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 0x80; i += 4)
|
|
mib_read(mp, i);
|
|
}
|
|
|
|
static void mib_counters_update(struct mv643xx_eth_private *mp)
|
|
{
|
|
struct mib_counters *p = &mp->mib_counters;
|
|
|
|
p->good_octets_received += mib_read(mp, 0x00);
|
|
p->good_octets_received += (u64)mib_read(mp, 0x04) << 32;
|
|
p->bad_octets_received += mib_read(mp, 0x08);
|
|
p->internal_mac_transmit_err += mib_read(mp, 0x0c);
|
|
p->good_frames_received += mib_read(mp, 0x10);
|
|
p->bad_frames_received += mib_read(mp, 0x14);
|
|
p->broadcast_frames_received += mib_read(mp, 0x18);
|
|
p->multicast_frames_received += mib_read(mp, 0x1c);
|
|
p->frames_64_octets += mib_read(mp, 0x20);
|
|
p->frames_65_to_127_octets += mib_read(mp, 0x24);
|
|
p->frames_128_to_255_octets += mib_read(mp, 0x28);
|
|
p->frames_256_to_511_octets += mib_read(mp, 0x2c);
|
|
p->frames_512_to_1023_octets += mib_read(mp, 0x30);
|
|
p->frames_1024_to_max_octets += mib_read(mp, 0x34);
|
|
p->good_octets_sent += mib_read(mp, 0x38);
|
|
p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32;
|
|
p->good_frames_sent += mib_read(mp, 0x40);
|
|
p->excessive_collision += mib_read(mp, 0x44);
|
|
p->multicast_frames_sent += mib_read(mp, 0x48);
|
|
p->broadcast_frames_sent += mib_read(mp, 0x4c);
|
|
p->unrec_mac_control_received += mib_read(mp, 0x50);
|
|
p->fc_sent += mib_read(mp, 0x54);
|
|
p->good_fc_received += mib_read(mp, 0x58);
|
|
p->bad_fc_received += mib_read(mp, 0x5c);
|
|
p->undersize_received += mib_read(mp, 0x60);
|
|
p->fragments_received += mib_read(mp, 0x64);
|
|
p->oversize_received += mib_read(mp, 0x68);
|
|
p->jabber_received += mib_read(mp, 0x6c);
|
|
p->mac_receive_error += mib_read(mp, 0x70);
|
|
p->bad_crc_event += mib_read(mp, 0x74);
|
|
p->collision += mib_read(mp, 0x78);
|
|
p->late_collision += mib_read(mp, 0x7c);
|
|
}
|
|
|
|
|
|
/* ethtool ******************************************************************/
|
|
struct mv643xx_eth_stats {
|
|
char stat_string[ETH_GSTRING_LEN];
|
|
int sizeof_stat;
|
|
int netdev_off;
|
|
int mp_off;
|
|
};
|
|
|
|
#define SSTAT(m) \
|
|
{ #m, FIELD_SIZEOF(struct net_device_stats, m), \
|
|
offsetof(struct net_device, stats.m), -1 }
|
|
|
|
#define MIBSTAT(m) \
|
|
{ #m, FIELD_SIZEOF(struct mib_counters, m), \
|
|
-1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
|
|
|
|
static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
|
|
SSTAT(rx_packets),
|
|
SSTAT(tx_packets),
|
|
SSTAT(rx_bytes),
|
|
SSTAT(tx_bytes),
|
|
SSTAT(rx_errors),
|
|
SSTAT(tx_errors),
|
|
SSTAT(rx_dropped),
|
|
SSTAT(tx_dropped),
|
|
MIBSTAT(good_octets_received),
|
|
MIBSTAT(bad_octets_received),
|
|
MIBSTAT(internal_mac_transmit_err),
|
|
MIBSTAT(good_frames_received),
|
|
MIBSTAT(bad_frames_received),
|
|
MIBSTAT(broadcast_frames_received),
|
|
MIBSTAT(multicast_frames_received),
|
|
MIBSTAT(frames_64_octets),
|
|
MIBSTAT(frames_65_to_127_octets),
|
|
MIBSTAT(frames_128_to_255_octets),
|
|
MIBSTAT(frames_256_to_511_octets),
|
|
MIBSTAT(frames_512_to_1023_octets),
|
|
MIBSTAT(frames_1024_to_max_octets),
|
|
MIBSTAT(good_octets_sent),
|
|
MIBSTAT(good_frames_sent),
|
|
MIBSTAT(excessive_collision),
|
|
MIBSTAT(multicast_frames_sent),
|
|
MIBSTAT(broadcast_frames_sent),
|
|
MIBSTAT(unrec_mac_control_received),
|
|
MIBSTAT(fc_sent),
|
|
MIBSTAT(good_fc_received),
|
|
MIBSTAT(bad_fc_received),
|
|
MIBSTAT(undersize_received),
|
|
MIBSTAT(fragments_received),
|
|
MIBSTAT(oversize_received),
|
|
MIBSTAT(jabber_received),
|
|
MIBSTAT(mac_receive_error),
|
|
MIBSTAT(bad_crc_event),
|
|
MIBSTAT(collision),
|
|
MIBSTAT(late_collision),
|
|
};
|
|
|
|
static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct mv643xx_eth_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 MAC does not support 1000baseT_Half.
|
|
*/
|
|
cmd->supported &= ~SUPPORTED_1000baseT_Half;
|
|
cmd->advertising &= ~ADVERTISED_1000baseT_Half;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mv643xx_eth_get_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
u32 port_status;
|
|
|
|
port_status = rdl(mp, PORT_STATUS(mp->port_num));
|
|
|
|
cmd->supported = SUPPORTED_MII;
|
|
cmd->advertising = ADVERTISED_MII;
|
|
switch (port_status & PORT_SPEED_MASK) {
|
|
case PORT_SPEED_10:
|
|
cmd->speed = SPEED_10;
|
|
break;
|
|
case PORT_SPEED_100:
|
|
cmd->speed = SPEED_100;
|
|
break;
|
|
case PORT_SPEED_1000:
|
|
cmd->speed = SPEED_1000;
|
|
break;
|
|
default:
|
|
cmd->speed = -1;
|
|
break;
|
|
}
|
|
cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
|
|
cmd->port = PORT_MII;
|
|
cmd->phy_address = 0;
|
|
cmd->transceiver = XCVR_INTERNAL;
|
|
cmd->autoneg = AUTONEG_DISABLE;
|
|
cmd->maxtxpkt = 1;
|
|
cmd->maxrxpkt = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
int err;
|
|
|
|
/*
|
|
* The MAC does not support 1000baseT_Half.
|
|
*/
|
|
cmd->advertising &= ~ADVERTISED_1000baseT_Half;
|
|
|
|
spin_lock_irq(&mp->lock);
|
|
err = mii_ethtool_sset(&mp->mii, cmd);
|
|
spin_unlock_irq(&mp->lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mv643xx_eth_set_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void mv643xx_eth_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *drvinfo)
|
|
{
|
|
strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32);
|
|
strncpy(drvinfo->version, mv643xx_eth_driver_version, 32);
|
|
strncpy(drvinfo->fw_version, "N/A", 32);
|
|
strncpy(drvinfo->bus_info, "platform", 32);
|
|
drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats);
|
|
}
|
|
|
|
static int mv643xx_eth_nway_reset(struct net_device *dev)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
|
|
return mii_nway_restart(&mp->mii);
|
|
}
|
|
|
|
static int mv643xx_eth_nway_reset_phyless(struct net_device *dev)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static u32 mv643xx_eth_get_link(struct net_device *dev)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
|
|
return mii_link_ok(&mp->mii);
|
|
}
|
|
|
|
static u32 mv643xx_eth_get_link_phyless(struct net_device *dev)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static void mv643xx_eth_get_strings(struct net_device *dev,
|
|
uint32_t stringset, uint8_t *data)
|
|
{
|
|
int i;
|
|
|
|
if (stringset == ETH_SS_STATS) {
|
|
for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
|
|
memcpy(data + i * ETH_GSTRING_LEN,
|
|
mv643xx_eth_stats[i].stat_string,
|
|
ETH_GSTRING_LEN);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *stats,
|
|
uint64_t *data)
|
|
{
|
|
struct mv643xx_eth_private *mp = dev->priv;
|
|
int i;
|
|
|
|
mib_counters_update(mp);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
|
|
const struct mv643xx_eth_stats *stat;
|
|
void *p;
|
|
|
|
stat = mv643xx_eth_stats + i;
|
|
|
|
if (stat->netdev_off >= 0)
|
|
p = ((void *)mp->dev) + stat->netdev_off;
|
|
else
|
|
p = ((void *)mp) + stat->mp_off;
|
|
|
|
data[i] = (stat->sizeof_stat == 8) ?
|
|
*(uint64_t *)p : *(uint32_t *)p;
|
|
}
|
|
}
|
|
|
|
static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
if (sset == ETH_SS_STATS)
|
|
return ARRAY_SIZE(mv643xx_eth_stats);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
|
|
.get_settings = mv643xx_eth_get_settings,
|
|
.set_settings = mv643xx_eth_set_settings,
|
|
.get_drvinfo = mv643xx_eth_get_drvinfo,
|
|
.nway_reset = mv643xx_eth_nway_reset,
|
|
.get_link = mv643xx_eth_get_link,
|
|
.set_sg = ethtool_op_set_sg,
|
|
.get_strings = mv643xx_eth_get_strings,
|
|
.get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
|
|
.get_sset_count = mv643xx_eth_get_sset_count,
|
|
};
|
|
|
|
static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = {
|
|
.get_settings = mv643xx_eth_get_settings_phyless,
|
|
.set_settings = mv643xx_eth_set_settings_phyless,
|
|
.get_drvinfo = mv643xx_eth_get_drvinfo,
|
|
.nway_reset = mv643xx_eth_nway_reset_phyless,
|
|
.get_link = mv643xx_eth_get_link_phyless,
|
|
.set_sg = ethtool_op_set_sg,
|
|
.get_strings = mv643xx_eth_get_strings,
|
|
.get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
|
|
.get_sset_count = mv643xx_eth_get_sset_count,
|
|
};
|
|
|
|
|
|
/* address handling *********************************************************/
|
|
static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
|
|
{
|
|
unsigned int mac_h;
|
|
unsigned int mac_l;
|
|
|
|
mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num));
|
|
mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num));
|
|
|
|
addr[0] = (mac_h >> 24) & 0xff;
|
|
addr[1] = (mac_h >> 16) & 0xff;
|
|
addr[2] = (mac_h >> 8) & 0xff;
|
|
addr[3] = mac_h & 0xff;
|
|
addr[4] = (mac_l >> 8) & 0xff;
|
|
addr[5] = mac_l & 0xff;
|
|
}
|
|
|
|
static void init_mac_tables(struct mv643xx_eth_private *mp)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 0x100; i += 4) {
|
|
wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
|
|
wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
|
|
}
|
|
|
|
for (i = 0; i < 0x10; i += 4)
|
|
wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0);
|
|
}
|
|
|
|
static void set_filter_table_entry(struct mv643xx_eth_private *mp,
|
|
int table, unsigned char entry)
|
|
{
|
|
unsigned int table_reg;
|
|
|
|
/* Set "accepts frame bit" at specified table entry */
|
|
table_reg = rdl(mp, table + (entry & 0xfc));
|
|
table_reg |= 0x01 << (8 * (entry & 3));
|
|
wrl(mp, table + (entry & 0xfc), table_reg);
|
|
}
|
|
|
|
static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
|
|
{
|
|
unsigned int mac_h;
|
|
unsigned int mac_l;
|
|
int table;
|
|
|
|
mac_l = (addr[4] << 8) | addr[5];
|
|
mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
|
|
|
|
wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l);
|
|
wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h);
|
|
|
|
table = UNICAST_TABLE(mp->port_num);
|
|
set_filter_table_entry(mp, table, addr[5] & 0x0f);
|
|
}
|
|
|
|
static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
|
|
/* +2 is for the offset of the HW addr type */
|
|
memcpy(dev->dev_addr, addr + 2, 6);
|
|
|
|
init_mac_tables(mp);
|
|
uc_addr_set(mp, dev->dev_addr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int addr_crc(unsigned char *addr)
|
|
{
|
|
int crc = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < 6; i++) {
|
|
int j;
|
|
|
|
crc = (crc ^ addr[i]) << 8;
|
|
for (j = 7; j >= 0; j--) {
|
|
if (crc & (0x100 << j))
|
|
crc ^= 0x107 << j;
|
|
}
|
|
}
|
|
|
|
return crc;
|
|
}
|
|
|
|
static void mv643xx_eth_set_rx_mode(struct net_device *dev)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
u32 port_config;
|
|
struct dev_addr_list *addr;
|
|
int i;
|
|
|
|
port_config = rdl(mp, PORT_CONFIG(mp->port_num));
|
|
if (dev->flags & IFF_PROMISC)
|
|
port_config |= UNICAST_PROMISCUOUS_MODE;
|
|
else
|
|
port_config &= ~UNICAST_PROMISCUOUS_MODE;
|
|
wrl(mp, PORT_CONFIG(mp->port_num), port_config);
|
|
|
|
if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
|
|
int port_num = mp->port_num;
|
|
u32 accept = 0x01010101;
|
|
|
|
for (i = 0; i < 0x100; i += 4) {
|
|
wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept);
|
|
wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept);
|
|
}
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < 0x100; i += 4) {
|
|
wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
|
|
wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
|
|
}
|
|
|
|
for (addr = dev->mc_list; addr != NULL; addr = addr->next) {
|
|
u8 *a = addr->da_addr;
|
|
int table;
|
|
|
|
if (addr->da_addrlen != 6)
|
|
continue;
|
|
|
|
if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
|
|
table = SPECIAL_MCAST_TABLE(mp->port_num);
|
|
set_filter_table_entry(mp, table, a[5]);
|
|
} else {
|
|
int crc = addr_crc(a);
|
|
|
|
table = OTHER_MCAST_TABLE(mp->port_num);
|
|
set_filter_table_entry(mp, table, crc);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* rx/tx queue initialisation ***********************************************/
|
|
static int rxq_init(struct mv643xx_eth_private *mp, int index)
|
|
{
|
|
struct rx_queue *rxq = mp->rxq + index;
|
|
struct rx_desc *rx_desc;
|
|
int size;
|
|
int i;
|
|
|
|
rxq->index = index;
|
|
|
|
rxq->rx_ring_size = mp->default_rx_ring_size;
|
|
|
|
rxq->rx_desc_count = 0;
|
|
rxq->rx_curr_desc = 0;
|
|
rxq->rx_used_desc = 0;
|
|
|
|
size = rxq->rx_ring_size * sizeof(struct rx_desc);
|
|
|
|
if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size) {
|
|
rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
|
|
mp->rx_desc_sram_size);
|
|
rxq->rx_desc_dma = mp->rx_desc_sram_addr;
|
|
} else {
|
|
rxq->rx_desc_area = dma_alloc_coherent(NULL, size,
|
|
&rxq->rx_desc_dma,
|
|
GFP_KERNEL);
|
|
}
|
|
|
|
if (rxq->rx_desc_area == NULL) {
|
|
dev_printk(KERN_ERR, &mp->dev->dev,
|
|
"can't allocate rx ring (%d bytes)\n", size);
|
|
goto out;
|
|
}
|
|
memset(rxq->rx_desc_area, 0, size);
|
|
|
|
rxq->rx_desc_area_size = size;
|
|
rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb),
|
|
GFP_KERNEL);
|
|
if (rxq->rx_skb == NULL) {
|
|
dev_printk(KERN_ERR, &mp->dev->dev,
|
|
"can't allocate rx skb ring\n");
|
|
goto out_free;
|
|
}
|
|
|
|
rx_desc = (struct rx_desc *)rxq->rx_desc_area;
|
|
for (i = 0; i < rxq->rx_ring_size; i++) {
|
|
int nexti = (i + 1) % rxq->rx_ring_size;
|
|
rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
|
|
nexti * sizeof(struct rx_desc);
|
|
}
|
|
|
|
init_timer(&rxq->rx_oom);
|
|
rxq->rx_oom.data = (unsigned long)rxq;
|
|
rxq->rx_oom.function = rxq_refill_timer_wrapper;
|
|
|
|
return 0;
|
|
|
|
|
|
out_free:
|
|
if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size)
|
|
iounmap(rxq->rx_desc_area);
|
|
else
|
|
dma_free_coherent(NULL, size,
|
|
rxq->rx_desc_area,
|
|
rxq->rx_desc_dma);
|
|
|
|
out:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static void rxq_deinit(struct rx_queue *rxq)
|
|
{
|
|
struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
|
|
int i;
|
|
|
|
rxq_disable(rxq);
|
|
|
|
del_timer_sync(&rxq->rx_oom);
|
|
|
|
for (i = 0; i < rxq->rx_ring_size; i++) {
|
|
if (rxq->rx_skb[i]) {
|
|
dev_kfree_skb(rxq->rx_skb[i]);
|
|
rxq->rx_desc_count--;
|
|
}
|
|
}
|
|
|
|
if (rxq->rx_desc_count) {
|
|
dev_printk(KERN_ERR, &mp->dev->dev,
|
|
"error freeing rx ring -- %d skbs stuck\n",
|
|
rxq->rx_desc_count);
|
|
}
|
|
|
|
if (rxq->index == mp->rxq_primary &&
|
|
rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
|
|
iounmap(rxq->rx_desc_area);
|
|
else
|
|
dma_free_coherent(NULL, rxq->rx_desc_area_size,
|
|
rxq->rx_desc_area, rxq->rx_desc_dma);
|
|
|
|
kfree(rxq->rx_skb);
|
|
}
|
|
|
|
static int txq_init(struct mv643xx_eth_private *mp, int index)
|
|
{
|
|
struct tx_queue *txq = mp->txq + index;
|
|
struct tx_desc *tx_desc;
|
|
int size;
|
|
int i;
|
|
|
|
txq->index = index;
|
|
|
|
txq->tx_ring_size = mp->default_tx_ring_size;
|
|
|
|
txq->tx_desc_count = 0;
|
|
txq->tx_curr_desc = 0;
|
|
txq->tx_used_desc = 0;
|
|
|
|
size = txq->tx_ring_size * sizeof(struct tx_desc);
|
|
|
|
if (index == mp->txq_primary && size <= mp->tx_desc_sram_size) {
|
|
txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
|
|
mp->tx_desc_sram_size);
|
|
txq->tx_desc_dma = mp->tx_desc_sram_addr;
|
|
} else {
|
|
txq->tx_desc_area = dma_alloc_coherent(NULL, size,
|
|
&txq->tx_desc_dma,
|
|
GFP_KERNEL);
|
|
}
|
|
|
|
if (txq->tx_desc_area == NULL) {
|
|
dev_printk(KERN_ERR, &mp->dev->dev,
|
|
"can't allocate tx ring (%d bytes)\n", size);
|
|
goto out;
|
|
}
|
|
memset(txq->tx_desc_area, 0, size);
|
|
|
|
txq->tx_desc_area_size = size;
|
|
txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb),
|
|
GFP_KERNEL);
|
|
if (txq->tx_skb == NULL) {
|
|
dev_printk(KERN_ERR, &mp->dev->dev,
|
|
"can't allocate tx skb ring\n");
|
|
goto out_free;
|
|
}
|
|
|
|
tx_desc = (struct tx_desc *)txq->tx_desc_area;
|
|
for (i = 0; i < txq->tx_ring_size; i++) {
|
|
struct tx_desc *txd = tx_desc + i;
|
|
int nexti = (i + 1) % txq->tx_ring_size;
|
|
|
|
txd->cmd_sts = 0;
|
|
txd->next_desc_ptr = txq->tx_desc_dma +
|
|
nexti * sizeof(struct tx_desc);
|
|
}
|
|
|
|
return 0;
|
|
|
|
|
|
out_free:
|
|
if (index == mp->txq_primary && size <= mp->tx_desc_sram_size)
|
|
iounmap(txq->tx_desc_area);
|
|
else
|
|
dma_free_coherent(NULL, size,
|
|
txq->tx_desc_area,
|
|
txq->tx_desc_dma);
|
|
|
|
out:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static void txq_reclaim(struct tx_queue *txq, int force)
|
|
{
|
|
struct mv643xx_eth_private *mp = txq_to_mp(txq);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&mp->lock, flags);
|
|
while (txq->tx_desc_count > 0) {
|
|
int tx_index;
|
|
struct tx_desc *desc;
|
|
u32 cmd_sts;
|
|
struct sk_buff *skb;
|
|
dma_addr_t addr;
|
|
int count;
|
|
|
|
tx_index = txq->tx_used_desc;
|
|
desc = &txq->tx_desc_area[tx_index];
|
|
cmd_sts = desc->cmd_sts;
|
|
|
|
if (cmd_sts & BUFFER_OWNED_BY_DMA) {
|
|
if (!force)
|
|
break;
|
|
desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA;
|
|
}
|
|
|
|
txq->tx_used_desc = (tx_index + 1) % txq->tx_ring_size;
|
|
txq->tx_desc_count--;
|
|
|
|
addr = desc->buf_ptr;
|
|
count = desc->byte_cnt;
|
|
skb = txq->tx_skb[tx_index];
|
|
txq->tx_skb[tx_index] = NULL;
|
|
|
|
if (cmd_sts & ERROR_SUMMARY) {
|
|
dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n");
|
|
mp->dev->stats.tx_errors++;
|
|
}
|
|
|
|
/*
|
|
* Drop mp->lock while we free the skb.
|
|
*/
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
|
|
if (cmd_sts & 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);
|
|
|
|
spin_lock_irqsave(&mp->lock, flags);
|
|
}
|
|
spin_unlock_irqrestore(&mp->lock, flags);
|
|
}
|
|
|
|
static void txq_deinit(struct tx_queue *txq)
|
|
{
|
|
struct mv643xx_eth_private *mp = txq_to_mp(txq);
|
|
|
|
txq_disable(txq);
|
|
txq_reclaim(txq, 1);
|
|
|
|
BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
|
|
|
|
if (txq->index == mp->txq_primary &&
|
|
txq->tx_desc_area_size <= mp->tx_desc_sram_size)
|
|
iounmap(txq->tx_desc_area);
|
|
else
|
|
dma_free_coherent(NULL, txq->tx_desc_area_size,
|
|
txq->tx_desc_area, txq->tx_desc_dma);
|
|
|
|
kfree(txq->tx_skb);
|
|
}
|
|
|
|
|
|
/* netdev ops and related ***************************************************/
|
|
static void handle_link_event(struct mv643xx_eth_private *mp)
|
|
{
|
|
struct net_device *dev = mp->dev;
|
|
u32 port_status;
|
|
int speed;
|
|
int duplex;
|
|
int fc;
|
|
|
|
port_status = rdl(mp, PORT_STATUS(mp->port_num));
|
|
if (!(port_status & LINK_UP)) {
|
|
if (netif_carrier_ok(dev)) {
|
|
int i;
|
|
|
|
printk(KERN_INFO "%s: link down\n", dev->name);
|
|
|
|
netif_carrier_off(dev);
|
|
netif_stop_queue(dev);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
struct tx_queue *txq = mp->txq + i;
|
|
|
|
if (mp->txq_mask & (1 << i)) {
|
|
txq_reclaim(txq, 1);
|
|
txq_reset_hw_ptr(txq);
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
switch (port_status & PORT_SPEED_MASK) {
|
|
case PORT_SPEED_10:
|
|
speed = 10;
|
|
break;
|
|
case PORT_SPEED_100:
|
|
speed = 100;
|
|
break;
|
|
case PORT_SPEED_1000:
|
|
speed = 1000;
|
|
break;
|
|
default:
|
|
speed = -1;
|
|
break;
|
|
}
|
|
duplex = (port_status & FULL_DUPLEX) ? 1 : 0;
|
|
fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0;
|
|
|
|
printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, "
|
|
"flow control %sabled\n", dev->name,
|
|
speed, duplex ? "full" : "half",
|
|
fc ? "en" : "dis");
|
|
|
|
if (!netif_carrier_ok(dev)) {
|
|
netif_carrier_on(dev);
|
|
netif_wake_queue(dev);
|
|
}
|
|
}
|
|
|
|
static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = (struct net_device *)dev_id;
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
u32 int_cause;
|
|
u32 int_cause_ext;
|
|
|
|
int_cause = rdl(mp, INT_CAUSE(mp->port_num)) &
|
|
(INT_TX_END | INT_RX | INT_EXT);
|
|
if (int_cause == 0)
|
|
return IRQ_NONE;
|
|
|
|
int_cause_ext = 0;
|
|
if (int_cause & INT_EXT) {
|
|
int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num))
|
|
& (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
|
|
wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext);
|
|
}
|
|
|
|
if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK))
|
|
handle_link_event(mp);
|
|
|
|
/*
|
|
* RxBuffer or RxError set for any of the 8 queues?
|
|
*/
|
|
#ifdef MV643XX_ETH_NAPI
|
|
if (int_cause & INT_RX) {
|
|
wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_RX));
|
|
wrl(mp, INT_MASK(mp->port_num), 0x00000000);
|
|
rdl(mp, INT_MASK(mp->port_num));
|
|
|
|
netif_rx_schedule(dev, &mp->napi);
|
|
}
|
|
#else
|
|
if (int_cause & INT_RX) {
|
|
int i;
|
|
|
|
for (i = 7; i >= 0; i--)
|
|
if (mp->rxq_mask & (1 << i))
|
|
rxq_process(mp->rxq + i, INT_MAX);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* TxBuffer or TxError set for any of the 8 queues?
|
|
*/
|
|
if (int_cause_ext & INT_EXT_TX) {
|
|
int i;
|
|
|
|
for (i = 0; i < 8; i++)
|
|
if (mp->txq_mask & (1 << i))
|
|
txq_reclaim(mp->txq + i, 0);
|
|
|
|
/*
|
|
* Enough space again in the primary TX queue for a
|
|
* full packet?
|
|
*/
|
|
if (netif_carrier_ok(dev)) {
|
|
spin_lock(&mp->lock);
|
|
__txq_maybe_wake(mp->txq + mp->txq_primary);
|
|
spin_unlock(&mp->lock);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Any TxEnd interrupts?
|
|
*/
|
|
if (int_cause & INT_TX_END) {
|
|
int i;
|
|
|
|
wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_TX_END));
|
|
|
|
spin_lock(&mp->lock);
|
|
for (i = 0; i < 8; i++) {
|
|
struct tx_queue *txq = mp->txq + i;
|
|
u32 hw_desc_ptr;
|
|
u32 expected_ptr;
|
|
|
|
if ((int_cause & (INT_TX_END_0 << i)) == 0)
|
|
continue;
|
|
|
|
hw_desc_ptr =
|
|
rdl(mp, TXQ_CURRENT_DESC_PTR(mp->port_num, i));
|
|
expected_ptr = (u32)txq->tx_desc_dma +
|
|
txq->tx_curr_desc * sizeof(struct tx_desc);
|
|
|
|
if (hw_desc_ptr != expected_ptr)
|
|
txq_enable(txq);
|
|
}
|
|
spin_unlock(&mp->lock);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void phy_reset(struct mv643xx_eth_private *mp)
|
|
{
|
|
unsigned int data;
|
|
|
|
smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data);
|
|
data |= BMCR_RESET;
|
|
smi_reg_write(mp, mp->phy_addr, MII_BMCR, data);
|
|
|
|
do {
|
|
udelay(1);
|
|
smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data);
|
|
} while (data & BMCR_RESET);
|
|
}
|
|
|
|
static void port_start(struct mv643xx_eth_private *mp)
|
|
{
|
|
u32 pscr;
|
|
int i;
|
|
|
|
/*
|
|
* Perform PHY reset, if there is a PHY.
|
|
*/
|
|
if (mp->phy_addr != -1) {
|
|
struct ethtool_cmd cmd;
|
|
|
|
mv643xx_eth_get_settings(mp->dev, &cmd);
|
|
phy_reset(mp);
|
|
mv643xx_eth_set_settings(mp->dev, &cmd);
|
|
}
|
|
|
|
/*
|
|
* Configure basic link parameters.
|
|
*/
|
|
pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
|
|
|
|
pscr |= SERIAL_PORT_ENABLE;
|
|
wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
|
|
|
|
pscr |= DO_NOT_FORCE_LINK_FAIL;
|
|
if (mp->phy_addr == -1)
|
|
pscr |= FORCE_LINK_PASS;
|
|
wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
|
|
|
|
wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE);
|
|
|
|
/*
|
|
* Configure TX path and queues.
|
|
*/
|
|
tx_set_rate(mp, 1000000000, 16777216);
|
|
for (i = 0; i < 8; i++) {
|
|
struct tx_queue *txq = mp->txq + i;
|
|
|
|
if ((mp->txq_mask & (1 << i)) == 0)
|
|
continue;
|
|
|
|
txq_reset_hw_ptr(txq);
|
|
txq_set_rate(txq, 1000000000, 16777216);
|
|
txq_set_fixed_prio_mode(txq);
|
|
}
|
|
|
|
/*
|
|
* Add configured unicast address to address filter table.
|
|
*/
|
|
uc_addr_set(mp, mp->dev->dev_addr);
|
|
|
|
/*
|
|
* Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
|
|
* frames to RX queue #0.
|
|
*/
|
|
wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000);
|
|
|
|
/*
|
|
* Treat BPDUs as normal multicasts, and disable partition mode.
|
|
*/
|
|
wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000);
|
|
|
|
/*
|
|
* Enable the receive queues.
|
|
*/
|
|
for (i = 0; i < 8; i++) {
|
|
struct rx_queue *rxq = mp->rxq + i;
|
|
int off = RXQ_CURRENT_DESC_PTR(mp->port_num, i);
|
|
u32 addr;
|
|
|
|
if ((mp->rxq_mask & (1 << i)) == 0)
|
|
continue;
|
|
|
|
addr = (u32)rxq->rx_desc_dma;
|
|
addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
|
|
wrl(mp, off, addr);
|
|
|
|
rxq_enable(rxq);
|
|
}
|
|
}
|
|
|
|
static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
|
|
{
|
|
unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
|
|
u32 val;
|
|
|
|
val = rdl(mp, SDMA_CONFIG(mp->port_num));
|
|
if (mp->shared->extended_rx_coal_limit) {
|
|
if (coal > 0xffff)
|
|
coal = 0xffff;
|
|
val &= ~0x023fff80;
|
|
val |= (coal & 0x8000) << 10;
|
|
val |= (coal & 0x7fff) << 7;
|
|
} else {
|
|
if (coal > 0x3fff)
|
|
coal = 0x3fff;
|
|
val &= ~0x003fff00;
|
|
val |= (coal & 0x3fff) << 8;
|
|
}
|
|
wrl(mp, SDMA_CONFIG(mp->port_num), val);
|
|
}
|
|
|
|
static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
|
|
{
|
|
unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
|
|
|
|
if (coal > 0x3fff)
|
|
coal = 0x3fff;
|
|
wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4);
|
|
}
|
|
|
|
static int mv643xx_eth_open(struct net_device *dev)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
int err;
|
|
int i;
|
|
|
|
wrl(mp, INT_CAUSE(mp->port_num), 0);
|
|
wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
|
|
rdl(mp, INT_CAUSE_EXT(mp->port_num));
|
|
|
|
err = request_irq(dev->irq, mv643xx_eth_irq,
|
|
IRQF_SHARED | IRQF_SAMPLE_RANDOM,
|
|
dev->name, dev);
|
|
if (err) {
|
|
dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n");
|
|
return -EAGAIN;
|
|
}
|
|
|
|
init_mac_tables(mp);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
if ((mp->rxq_mask & (1 << i)) == 0)
|
|
continue;
|
|
|
|
err = rxq_init(mp, i);
|
|
if (err) {
|
|
while (--i >= 0)
|
|
if (mp->rxq_mask & (1 << i))
|
|
rxq_deinit(mp->rxq + i);
|
|
goto out;
|
|
}
|
|
|
|
rxq_refill(mp->rxq + i);
|
|
}
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
if ((mp->txq_mask & (1 << i)) == 0)
|
|
continue;
|
|
|
|
err = txq_init(mp, i);
|
|
if (err) {
|
|
while (--i >= 0)
|
|
if (mp->txq_mask & (1 << i))
|
|
txq_deinit(mp->txq + i);
|
|
goto out_free;
|
|
}
|
|
}
|
|
|
|
#ifdef MV643XX_ETH_NAPI
|
|
napi_enable(&mp->napi);
|
|
#endif
|
|
|
|
netif_carrier_off(dev);
|
|
netif_stop_queue(dev);
|
|
|
|
port_start(mp);
|
|
|
|
set_rx_coal(mp, 0);
|
|
set_tx_coal(mp, 0);
|
|
|
|
wrl(mp, INT_MASK_EXT(mp->port_num),
|
|
INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
|
|
|
|
wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
|
|
|
|
return 0;
|
|
|
|
|
|
out_free:
|
|
for (i = 0; i < 8; i++)
|
|
if (mp->rxq_mask & (1 << i))
|
|
rxq_deinit(mp->rxq + i);
|
|
out:
|
|
free_irq(dev->irq, dev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void port_reset(struct mv643xx_eth_private *mp)
|
|
{
|
|
unsigned int data;
|
|
int i;
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
if (mp->rxq_mask & (1 << i))
|
|
rxq_disable(mp->rxq + i);
|
|
if (mp->txq_mask & (1 << i))
|
|
txq_disable(mp->txq + i);
|
|
}
|
|
|
|
while (1) {
|
|
u32 ps = rdl(mp, PORT_STATUS(mp->port_num));
|
|
|
|
if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY)
|
|
break;
|
|
udelay(10);
|
|
}
|
|
|
|
/* Reset the Enable bit in the Configuration Register */
|
|
data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
|
|
data &= ~(SERIAL_PORT_ENABLE |
|
|
DO_NOT_FORCE_LINK_FAIL |
|
|
FORCE_LINK_PASS);
|
|
wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data);
|
|
}
|
|
|
|
static int mv643xx_eth_stop(struct net_device *dev)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
int i;
|
|
|
|
wrl(mp, INT_MASK(mp->port_num), 0x00000000);
|
|
rdl(mp, INT_MASK(mp->port_num));
|
|
|
|
#ifdef MV643XX_ETH_NAPI
|
|
napi_disable(&mp->napi);
|
|
#endif
|
|
netif_carrier_off(dev);
|
|
netif_stop_queue(dev);
|
|
|
|
free_irq(dev->irq, dev);
|
|
|
|
port_reset(mp);
|
|
mib_counters_update(mp);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
if (mp->rxq_mask & (1 << i))
|
|
rxq_deinit(mp->rxq + i);
|
|
if (mp->txq_mask & (1 << i))
|
|
txq_deinit(mp->txq + i);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
|
|
if (mp->phy_addr != -1)
|
|
return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
|
|
if (new_mtu < 64 || new_mtu > 9500)
|
|
return -EINVAL;
|
|
|
|
dev->mtu = new_mtu;
|
|
tx_set_rate(mp, 1000000000, 16777216);
|
|
|
|
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.
|
|
*/
|
|
mv643xx_eth_stop(dev);
|
|
if (mv643xx_eth_open(dev)) {
|
|
dev_printk(KERN_ERR, &dev->dev,
|
|
"fatal error on re-opening device after "
|
|
"MTU change\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tx_timeout_task(struct work_struct *ugly)
|
|
{
|
|
struct mv643xx_eth_private *mp;
|
|
|
|
mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
|
|
if (netif_running(mp->dev)) {
|
|
netif_stop_queue(mp->dev);
|
|
|
|
port_reset(mp);
|
|
port_start(mp);
|
|
|
|
__txq_maybe_wake(mp->txq + mp->txq_primary);
|
|
}
|
|
}
|
|
|
|
static void mv643xx_eth_tx_timeout(struct net_device *dev)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
|
|
dev_printk(KERN_INFO, &dev->dev, "tx timeout\n");
|
|
|
|
schedule_work(&mp->tx_timeout_task);
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static void mv643xx_eth_netpoll(struct net_device *dev)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
|
|
wrl(mp, INT_MASK(mp->port_num), 0x00000000);
|
|
rdl(mp, INT_MASK(mp->port_num));
|
|
|
|
mv643xx_eth_irq(dev->irq, dev);
|
|
|
|
wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
|
|
}
|
|
#endif
|
|
|
|
static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
int val;
|
|
|
|
smi_reg_read(mp, addr, reg, &val);
|
|
|
|
return val;
|
|
}
|
|
|
|
static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val)
|
|
{
|
|
struct mv643xx_eth_private *mp = netdev_priv(dev);
|
|
smi_reg_write(mp, addr, reg, val);
|
|
}
|
|
|
|
|
|
/* platform glue ************************************************************/
|
|
static void
|
|
mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
|
|
struct mbus_dram_target_info *dram)
|
|
{
|
|
void __iomem *base = msp->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 void infer_hw_params(struct mv643xx_eth_shared_private *msp)
|
|
{
|
|
/*
|
|
* Check whether we have a 14-bit coal limit field in bits
|
|
* [21:8], or a 16-bit coal limit in bits [25,21:7] of the
|
|
* SDMA config register.
|
|
*/
|
|
writel(0x02000000, msp->base + SDMA_CONFIG(0));
|
|
if (readl(msp->base + SDMA_CONFIG(0)) & 0x02000000)
|
|
msp->extended_rx_coal_limit = 1;
|
|
else
|
|
msp->extended_rx_coal_limit = 0;
|
|
|
|
/*
|
|
* Check whether the TX rate control registers are in the
|
|
* old or the new place.
|
|
*/
|
|
writel(1, msp->base + TX_BW_MTU_MOVED(0));
|
|
if (readl(msp->base + TX_BW_MTU_MOVED(0)) & 1)
|
|
msp->tx_bw_control_moved = 1;
|
|
else
|
|
msp->tx_bw_control_moved = 0;
|
|
}
|
|
|
|
static int mv643xx_eth_shared_probe(struct platform_device *pdev)
|
|
{
|
|
static int mv643xx_eth_version_printed = 0;
|
|
struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
|
|
struct mv643xx_eth_shared_private *msp;
|
|
struct resource *res;
|
|
int ret;
|
|
|
|
if (!mv643xx_eth_version_printed++)
|
|
printk(KERN_NOTICE "MV-643xx 10/100/1000 ethernet "
|
|
"driver version %s\n", mv643xx_eth_driver_version);
|
|
|
|
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->base = ioremap(res->start, res->end - res->start + 1);
|
|
if (msp->base == NULL)
|
|
goto out_free;
|
|
|
|
spin_lock_init(&msp->phy_lock);
|
|
|
|
/*
|
|
* (Re-)program MBUS remapping windows if we are asked to.
|
|
*/
|
|
if (pd != NULL && pd->dram != NULL)
|
|
mv643xx_eth_conf_mbus_windows(msp, pd->dram);
|
|
|
|
/*
|
|
* Detect hardware parameters.
|
|
*/
|
|
msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
|
|
infer_hw_params(msp);
|
|
|
|
platform_set_drvdata(pdev, msp);
|
|
|
|
return 0;
|
|
|
|
out_free:
|
|
kfree(msp);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int mv643xx_eth_shared_remove(struct platform_device *pdev)
|
|
{
|
|
struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
|
|
|
|
iounmap(msp->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,
|
|
},
|
|
};
|
|
|
|
static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
|
|
{
|
|
int addr_shift = 5 * mp->port_num;
|
|
u32 data;
|
|
|
|
data = rdl(mp, PHY_ADDR);
|
|
data &= ~(0x1f << addr_shift);
|
|
data |= (phy_addr & 0x1f) << addr_shift;
|
|
wrl(mp, PHY_ADDR, data);
|
|
}
|
|
|
|
static int phy_addr_get(struct mv643xx_eth_private *mp)
|
|
{
|
|
unsigned int data;
|
|
|
|
data = rdl(mp, PHY_ADDR);
|
|
|
|
return (data >> (5 * mp->port_num)) & 0x1f;
|
|
}
|
|
|
|
static void set_params(struct mv643xx_eth_private *mp,
|
|
struct mv643xx_eth_platform_data *pd)
|
|
{
|
|
struct net_device *dev = mp->dev;
|
|
|
|
if (is_valid_ether_addr(pd->mac_addr))
|
|
memcpy(dev->dev_addr, pd->mac_addr, 6);
|
|
else
|
|
uc_addr_get(mp, dev->dev_addr);
|
|
|
|
if (pd->phy_addr == -1) {
|
|
mp->shared_smi = NULL;
|
|
mp->phy_addr = -1;
|
|
} else {
|
|
mp->shared_smi = mp->shared;
|
|
if (pd->shared_smi != NULL)
|
|
mp->shared_smi = platform_get_drvdata(pd->shared_smi);
|
|
|
|
if (pd->force_phy_addr || pd->phy_addr) {
|
|
mp->phy_addr = pd->phy_addr & 0x3f;
|
|
phy_addr_set(mp, mp->phy_addr);
|
|
} else {
|
|
mp->phy_addr = phy_addr_get(mp);
|
|
}
|
|
}
|
|
|
|
mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
|
|
if (pd->rx_queue_size)
|
|
mp->default_rx_ring_size = pd->rx_queue_size;
|
|
mp->rx_desc_sram_addr = pd->rx_sram_addr;
|
|
mp->rx_desc_sram_size = pd->rx_sram_size;
|
|
|
|
if (pd->rx_queue_mask)
|
|
mp->rxq_mask = pd->rx_queue_mask;
|
|
else
|
|
mp->rxq_mask = 0x01;
|
|
mp->rxq_primary = fls(mp->rxq_mask) - 1;
|
|
|
|
mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE;
|
|
if (pd->tx_queue_size)
|
|
mp->default_tx_ring_size = pd->tx_queue_size;
|
|
mp->tx_desc_sram_addr = pd->tx_sram_addr;
|
|
mp->tx_desc_sram_size = pd->tx_sram_size;
|
|
|
|
if (pd->tx_queue_mask)
|
|
mp->txq_mask = pd->tx_queue_mask;
|
|
else
|
|
mp->txq_mask = 0x01;
|
|
mp->txq_primary = fls(mp->txq_mask) - 1;
|
|
}
|
|
|
|
static int phy_detect(struct mv643xx_eth_private *mp)
|
|
{
|
|
unsigned int data;
|
|
unsigned int data2;
|
|
|
|
smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data);
|
|
smi_reg_write(mp, mp->phy_addr, MII_BMCR, data ^ BMCR_ANENABLE);
|
|
|
|
smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data2);
|
|
if (((data ^ data2) & BMCR_ANENABLE) == 0)
|
|
return -ENODEV;
|
|
|
|
smi_reg_write(mp, mp->phy_addr, MII_BMCR, data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int phy_init(struct mv643xx_eth_private *mp,
|
|
struct mv643xx_eth_platform_data *pd)
|
|
{
|
|
struct ethtool_cmd cmd;
|
|
int err;
|
|
|
|
err = phy_detect(mp);
|
|
if (err) {
|
|
dev_printk(KERN_INFO, &mp->dev->dev,
|
|
"no PHY detected at addr %d\n", mp->phy_addr);
|
|
return err;
|
|
}
|
|
phy_reset(mp);
|
|
|
|
mp->mii.phy_id = mp->phy_addr;
|
|
mp->mii.phy_id_mask = 0x3f;
|
|
mp->mii.reg_num_mask = 0x1f;
|
|
mp->mii.dev = mp->dev;
|
|
mp->mii.mdio_read = mv643xx_eth_mdio_read;
|
|
mp->mii.mdio_write = mv643xx_eth_mdio_write;
|
|
|
|
mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
|
|
|
|
memset(&cmd, 0, sizeof(cmd));
|
|
|
|
cmd.port = PORT_MII;
|
|
cmd.transceiver = XCVR_INTERNAL;
|
|
cmd.phy_address = mp->phy_addr;
|
|
if (pd->speed == 0) {
|
|
cmd.autoneg = 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 = pd->speed;
|
|
cmd.duplex = pd->duplex;
|
|
}
|
|
|
|
mv643xx_eth_set_settings(mp->dev, &cmd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
|
|
{
|
|
u32 pscr;
|
|
|
|
pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
|
|
if (pscr & SERIAL_PORT_ENABLE) {
|
|
pscr &= ~SERIAL_PORT_ENABLE;
|
|
wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
|
|
}
|
|
|
|
pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED;
|
|
if (mp->phy_addr == -1) {
|
|
pscr |= DISABLE_AUTO_NEG_SPEED_GMII;
|
|
if (speed == SPEED_1000)
|
|
pscr |= SET_GMII_SPEED_TO_1000;
|
|
else if (speed == SPEED_100)
|
|
pscr |= SET_MII_SPEED_TO_100;
|
|
|
|
pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL;
|
|
|
|
pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX;
|
|
if (duplex == DUPLEX_FULL)
|
|
pscr |= SET_FULL_DUPLEX_MODE;
|
|
}
|
|
|
|
wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
|
|
}
|
|
|
|
static int mv643xx_eth_probe(struct platform_device *pdev)
|
|
{
|
|
struct mv643xx_eth_platform_data *pd;
|
|
struct mv643xx_eth_private *mp;
|
|
struct net_device *dev;
|
|
struct resource *res;
|
|
DECLARE_MAC_BUF(mac);
|
|
int err;
|
|
|
|
pd = pdev->dev.platform_data;
|
|
if (pd == NULL) {
|
|
dev_printk(KERN_ERR, &pdev->dev,
|
|
"no mv643xx_eth_platform_data\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (pd->shared == NULL) {
|
|
dev_printk(KERN_ERR, &pdev->dev,
|
|
"no mv643xx_eth_platform_data->shared\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
dev = alloc_etherdev(sizeof(struct mv643xx_eth_private));
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
mp = netdev_priv(dev);
|
|
platform_set_drvdata(pdev, mp);
|
|
|
|
mp->shared = platform_get_drvdata(pd->shared);
|
|
mp->port_num = pd->port_number;
|
|
|
|
mp->dev = dev;
|
|
#ifdef MV643XX_ETH_NAPI
|
|
netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 64);
|
|
#endif
|
|
|
|
set_params(mp, pd);
|
|
|
|
spin_lock_init(&mp->lock);
|
|
|
|
mib_counters_clear(mp);
|
|
INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
|
|
|
|
if (mp->phy_addr != -1) {
|
|
err = phy_init(mp, pd);
|
|
if (err)
|
|
goto out;
|
|
|
|
SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
|
|
} else {
|
|
SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless);
|
|
}
|
|
init_pscr(mp, pd->speed, pd->duplex);
|
|
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
|
BUG_ON(!res);
|
|
dev->irq = res->start;
|
|
|
|
dev->hard_start_xmit = mv643xx_eth_xmit;
|
|
dev->open = mv643xx_eth_open;
|
|
dev->stop = mv643xx_eth_stop;
|
|
dev->set_multicast_list = mv643xx_eth_set_rx_mode;
|
|
dev->set_mac_address = mv643xx_eth_set_mac_address;
|
|
dev->do_ioctl = mv643xx_eth_ioctl;
|
|
dev->change_mtu = mv643xx_eth_change_mtu;
|
|
dev->tx_timeout = mv643xx_eth_tx_timeout;
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
dev->poll_controller = mv643xx_eth_netpoll;
|
|
#endif
|
|
dev->watchdog_timeo = 2 * HZ;
|
|
dev->base_addr = 0;
|
|
|
|
#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX
|
|
/*
|
|
* 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;
|
|
dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM;
|
|
#endif
|
|
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
|
|
if (mp->shared->win_protect)
|
|
wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
|
|
|
|
err = register_netdev(dev);
|
|
if (err)
|
|
goto out;
|
|
|
|
dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n",
|
|
mp->port_num, print_mac(mac, dev->dev_addr));
|
|
|
|
if (dev->features & NETIF_F_SG)
|
|
dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n");
|
|
|
|
if (dev->features & NETIF_F_IP_CSUM)
|
|
dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n");
|
|
|
|
#ifdef MV643XX_ETH_NAPI
|
|
dev_printk(KERN_NOTICE, &dev->dev, "napi enabled\n");
|
|
#endif
|
|
|
|
if (mp->tx_desc_sram_size > 0)
|
|
dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n");
|
|
|
|
return 0;
|
|
|
|
out:
|
|
free_netdev(dev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mv643xx_eth_remove(struct platform_device *pdev)
|
|
{
|
|
struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
|
|
|
|
unregister_netdev(mp->dev);
|
|
flush_scheduled_work();
|
|
free_netdev(mp->dev);
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mv643xx_eth_shutdown(struct platform_device *pdev)
|
|
{
|
|
struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
|
|
|
|
/* Mask all interrupts on ethernet port */
|
|
wrl(mp, INT_MASK(mp->port_num), 0);
|
|
rdl(mp, INT_MASK(mp->port_num));
|
|
|
|
if (netif_running(mp->dev))
|
|
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,
|
|
},
|
|
};
|
|
|
|
static int __init mv643xx_eth_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;
|
|
}
|
|
module_init(mv643xx_eth_init_module);
|
|
|
|
static void __exit mv643xx_eth_cleanup_module(void)
|
|
{
|
|
platform_driver_unregister(&mv643xx_eth_driver);
|
|
platform_driver_unregister(&mv643xx_eth_shared_driver);
|
|
}
|
|
module_exit(mv643xx_eth_cleanup_module);
|
|
|
|
MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, "
|
|
"Manish Lachwani, Dale Farnsworth and Lennert Buytenhek");
|
|
MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
|
|
MODULE_ALIAS("platform:" MV643XX_ETH_NAME);
|