mirror of https://gitee.com/openkylin/linux.git
1136 lines
29 KiB
C
1136 lines
29 KiB
C
/*
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* RDC R6040 Fast Ethernet MAC support
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*
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* Copyright (C) 2004 Sten Wang <sten.wang@rdc.com.tw>
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* Copyright (C) 2007
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* Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
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* Florian Fainelli <florian@openwrt.org>
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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
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/version.h>
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#include <linux/moduleparam.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <linux/crc32.h>
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#include <linux/spinlock.h>
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#include <linux/bitops.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/uaccess.h>
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#include <asm/processor.h>
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#define DRV_NAME "r6040"
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#define DRV_VERSION "0.16"
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#define DRV_RELDATE "10Nov2007"
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/* PHY CHIP Address */
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#define PHY1_ADDR 1 /* For MAC1 */
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#define PHY2_ADDR 2 /* For MAC2 */
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#define PHY_MODE 0x3100 /* PHY CHIP Register 0 */
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#define PHY_CAP 0x01E1 /* PHY CHIP Register 4 */
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/* Time in jiffies before concluding the transmitter is hung. */
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#define TX_TIMEOUT (6000 * HZ / 1000)
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/* RDC MAC I/O Size */
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#define R6040_IO_SIZE 256
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/* MAX RDC MAC */
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#define MAX_MAC 2
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/* MAC registers */
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#define MCR0 0x00 /* Control register 0 */
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#define MCR1 0x04 /* Control register 1 */
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#define MAC_RST 0x0001 /* Reset the MAC */
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#define MBCR 0x08 /* Bus control */
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#define MT_ICR 0x0C /* TX interrupt control */
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#define MR_ICR 0x10 /* RX interrupt control */
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#define MTPR 0x14 /* TX poll command register */
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#define MR_BSR 0x18 /* RX buffer size */
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#define MR_DCR 0x1A /* RX descriptor control */
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#define MLSR 0x1C /* Last status */
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#define MMDIO 0x20 /* MDIO control register */
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#define MDIO_WRITE 0x4000 /* MDIO write */
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#define MDIO_READ 0x2000 /* MDIO read */
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#define MMRD 0x24 /* MDIO read data register */
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#define MMWD 0x28 /* MDIO write data register */
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#define MTD_SA0 0x2C /* TX descriptor start address 0 */
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#define MTD_SA1 0x30 /* TX descriptor start address 1 */
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#define MRD_SA0 0x34 /* RX descriptor start address 0 */
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#define MRD_SA1 0x38 /* RX descriptor start address 1 */
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#define MISR 0x3C /* Status register */
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#define MIER 0x40 /* INT enable register */
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#define MSK_INT 0x0000 /* Mask off interrupts */
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#define ME_CISR 0x44 /* Event counter INT status */
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#define ME_CIER 0x48 /* Event counter INT enable */
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#define MR_CNT 0x50 /* Successfully received packet counter */
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#define ME_CNT0 0x52 /* Event counter 0 */
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#define ME_CNT1 0x54 /* Event counter 1 */
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#define ME_CNT2 0x56 /* Event counter 2 */
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#define ME_CNT3 0x58 /* Event counter 3 */
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#define MT_CNT 0x5A /* Successfully transmit packet counter */
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#define ME_CNT4 0x5C /* Event counter 4 */
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#define MP_CNT 0x5E /* Pause frame counter register */
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#define MAR0 0x60 /* Hash table 0 */
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#define MAR1 0x62 /* Hash table 1 */
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#define MAR2 0x64 /* Hash table 2 */
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#define MAR3 0x66 /* Hash table 3 */
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#define MID_0L 0x68 /* Multicast address MID0 Low */
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#define MID_0M 0x6A /* Multicast address MID0 Medium */
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#define MID_0H 0x6C /* Multicast address MID0 High */
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#define MID_1L 0x70 /* MID1 Low */
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#define MID_1M 0x72 /* MID1 Medium */
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#define MID_1H 0x74 /* MID1 High */
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#define MID_2L 0x78 /* MID2 Low */
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#define MID_2M 0x7A /* MID2 Medium */
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#define MID_2H 0x7C /* MID2 High */
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#define MID_3L 0x80 /* MID3 Low */
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#define MID_3M 0x82 /* MID3 Medium */
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#define MID_3H 0x84 /* MID3 High */
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#define PHY_CC 0x88 /* PHY status change configuration register */
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#define PHY_ST 0x8A /* PHY status register */
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#define MAC_SM 0xAC /* MAC status machine */
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#define MAC_ID 0xBE /* Identifier register */
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#define TX_DCNT 0x80 /* TX descriptor count */
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#define RX_DCNT 0x80 /* RX descriptor count */
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#define MAX_BUF_SIZE 0x600
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#define RX_DESC_SIZE (RX_DCNT * sizeof(struct r6040_descriptor))
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#define TX_DESC_SIZE (TX_DCNT * sizeof(struct r6040_descriptor))
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#define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */
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#define MCAST_MAX 4 /* Max number multicast addresses to filter */
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/* PHY settings */
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#define ICPLUS_PHY_ID 0x0243
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MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>,"
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"Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>,"
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"Florian Fainelli <florian@openwrt.org>");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver");
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#define RX_INT 0x0001
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#define TX_INT 0x0010
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#define RX_NO_DESC_INT 0x0002
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#define INT_MASK (RX_INT | TX_INT)
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struct r6040_descriptor {
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u16 status, len; /* 0-3 */
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__le32 buf; /* 4-7 */
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__le32 ndesc; /* 8-B */
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u32 rev1; /* C-F */
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char *vbufp; /* 10-13 */
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struct r6040_descriptor *vndescp; /* 14-17 */
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struct sk_buff *skb_ptr; /* 18-1B */
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u32 rev2; /* 1C-1F */
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} __attribute__((aligned(32)));
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struct r6040_private {
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spinlock_t lock; /* driver lock */
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struct timer_list timer;
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struct pci_dev *pdev;
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struct r6040_descriptor *rx_insert_ptr;
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struct r6040_descriptor *rx_remove_ptr;
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struct r6040_descriptor *tx_insert_ptr;
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struct r6040_descriptor *tx_remove_ptr;
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struct r6040_descriptor *rx_ring;
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struct r6040_descriptor *tx_ring;
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dma_addr_t rx_ring_dma;
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dma_addr_t tx_ring_dma;
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u16 tx_free_desc, rx_free_desc, phy_addr, phy_mode;
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u16 mcr0, mcr1;
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u16 switch_sig;
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struct net_device *dev;
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struct mii_if_info mii_if;
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struct napi_struct napi;
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void __iomem *base;
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};
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static char version[] __devinitdata = KERN_INFO DRV_NAME
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": RDC R6040 NAPI net driver,"
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"version "DRV_VERSION " (" DRV_RELDATE ")\n";
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static int phy_table[] = { PHY1_ADDR, PHY2_ADDR };
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/* Read a word data from PHY Chip */
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static int phy_read(void __iomem *ioaddr, int phy_addr, int reg)
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{
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int limit = 2048;
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u16 cmd;
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iowrite16(MDIO_READ + reg + (phy_addr << 8), ioaddr + MMDIO);
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/* Wait for the read bit to be cleared */
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while (limit--) {
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cmd = ioread16(ioaddr + MMDIO);
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if (cmd & MDIO_READ)
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break;
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}
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return ioread16(ioaddr + MMRD);
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}
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/* Write a word data from PHY Chip */
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static void phy_write(void __iomem *ioaddr, int phy_addr, int reg, u16 val)
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{
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int limit = 2048;
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u16 cmd;
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iowrite16(val, ioaddr + MMWD);
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/* Write the command to the MDIO bus */
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iowrite16(MDIO_WRITE + reg + (phy_addr << 8), ioaddr + MMDIO);
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/* Wait for the write bit to be cleared */
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while (limit--) {
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cmd = ioread16(ioaddr + MMDIO);
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if (cmd & MDIO_WRITE)
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break;
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}
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}
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static int mdio_read(struct net_device *dev, int mii_id, int reg)
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{
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struct r6040_private *lp = netdev_priv(dev);
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void __iomem *ioaddr = lp->base;
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return (phy_read(ioaddr, lp->phy_addr, reg));
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}
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static void mdio_write(struct net_device *dev, int mii_id, int reg, int val)
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{
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struct r6040_private *lp = netdev_priv(dev);
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void __iomem *ioaddr = lp->base;
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phy_write(ioaddr, lp->phy_addr, reg, val);
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}
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static void r6040_free_txbufs(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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int i;
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for (i = 0; i < TX_DCNT; i++) {
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if (lp->tx_insert_ptr->skb_ptr) {
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pci_unmap_single(lp->pdev,
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le32_to_cpu(lp->tx_insert_ptr->buf),
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MAX_BUF_SIZE, PCI_DMA_TODEVICE);
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dev_kfree_skb(lp->tx_insert_ptr->skb_ptr);
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lp->rx_insert_ptr->skb_ptr = NULL;
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}
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lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
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}
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}
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static void r6040_free_rxbufs(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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int i;
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for (i = 0; i < RX_DCNT; i++) {
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if (lp->rx_insert_ptr->skb_ptr) {
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pci_unmap_single(lp->pdev,
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le32_to_cpu(lp->rx_insert_ptr->buf),
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MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
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dev_kfree_skb(lp->rx_insert_ptr->skb_ptr);
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lp->rx_insert_ptr->skb_ptr = NULL;
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}
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lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
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}
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}
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static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
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dma_addr_t desc_dma, int size)
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{
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struct r6040_descriptor *desc = desc_ring;
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dma_addr_t mapping = desc_dma;
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while (size-- > 0) {
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mapping += sizeof(sizeof(*desc));
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desc->ndesc = cpu_to_le32(mapping);
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desc->vndescp = desc + 1;
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desc++;
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}
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desc--;
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desc->ndesc = cpu_to_le32(desc_dma);
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desc->vndescp = desc_ring;
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}
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/* Allocate skb buffer for rx descriptor */
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static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev)
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{
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struct r6040_descriptor *descptr;
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void __iomem *ioaddr = lp->base;
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descptr = lp->rx_insert_ptr;
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while (lp->rx_free_desc < RX_DCNT) {
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descptr->skb_ptr = netdev_alloc_skb(dev, MAX_BUF_SIZE);
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if (!descptr->skb_ptr)
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break;
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descptr->buf = cpu_to_le32(pci_map_single(lp->pdev,
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descptr->skb_ptr->data,
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MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
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descptr->status = 0x8000;
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descptr = descptr->vndescp;
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lp->rx_free_desc++;
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/* Trigger RX DMA */
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iowrite16(lp->mcr0 | 0x0002, ioaddr);
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}
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lp->rx_insert_ptr = descptr;
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}
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static void r6040_alloc_txbufs(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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void __iomem *ioaddr = lp->base;
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lp->tx_free_desc = TX_DCNT;
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lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring;
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r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT);
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iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0);
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iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1);
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}
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static void r6040_alloc_rxbufs(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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void __iomem *ioaddr = lp->base;
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lp->rx_free_desc = 0;
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lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring;
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r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT);
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rx_buf_alloc(lp, dev);
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iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0);
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iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
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}
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static void r6040_tx_timeout(struct net_device *dev)
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{
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struct r6040_private *priv = netdev_priv(dev);
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void __iomem *ioaddr = priv->base;
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printk(KERN_WARNING "%s: transmit timed out, status %4.4x, PHY status "
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"%4.4x\n",
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dev->name, ioread16(ioaddr + MIER),
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mdio_read(dev, priv->mii_if.phy_id, MII_BMSR));
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disable_irq(dev->irq);
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napi_disable(&priv->napi);
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spin_lock(&priv->lock);
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/* Clear all descriptors */
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r6040_free_txbufs(dev);
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r6040_free_rxbufs(dev);
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r6040_alloc_txbufs(dev);
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r6040_alloc_rxbufs(dev);
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/* Reset MAC */
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iowrite16(MAC_RST, ioaddr + MCR1);
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spin_unlock(&priv->lock);
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enable_irq(dev->irq);
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dev->stats.tx_errors++;
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netif_wake_queue(dev);
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}
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static struct net_device_stats *r6040_get_stats(struct net_device *dev)
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{
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struct r6040_private *priv = netdev_priv(dev);
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void __iomem *ioaddr = priv->base;
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unsigned long flags;
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spin_lock_irqsave(&priv->lock, flags);
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dev->stats.rx_crc_errors += ioread8(ioaddr + ME_CNT1);
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dev->stats.multicast += ioread8(ioaddr + ME_CNT0);
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spin_unlock_irqrestore(&priv->lock, flags);
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return &dev->stats;
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}
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/* Stop RDC MAC and Free the allocated resource */
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static void r6040_down(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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void __iomem *ioaddr = lp->base;
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struct pci_dev *pdev = lp->pdev;
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int limit = 2048;
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u16 *adrp;
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u16 cmd;
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/* Stop MAC */
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iowrite16(MSK_INT, ioaddr + MIER); /* Mask Off Interrupt */
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iowrite16(MAC_RST, ioaddr + MCR1); /* Reset RDC MAC */
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while (limit--) {
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cmd = ioread16(ioaddr + MCR1);
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if (cmd & 0x1)
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break;
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}
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/* Restore MAC Address to MIDx */
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adrp = (u16 *) dev->dev_addr;
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iowrite16(adrp[0], ioaddr + MID_0L);
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iowrite16(adrp[1], ioaddr + MID_0M);
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iowrite16(adrp[2], ioaddr + MID_0H);
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free_irq(dev->irq, dev);
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/* Free RX buffer */
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r6040_free_rxbufs(dev);
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/* Free TX buffer */
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r6040_free_txbufs(dev);
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/* Free Descriptor memory */
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pci_free_consistent(pdev, RX_DESC_SIZE, lp->rx_ring, lp->rx_ring_dma);
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pci_free_consistent(pdev, TX_DESC_SIZE, lp->tx_ring, lp->tx_ring_dma);
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}
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static int r6040_close(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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/* deleted timer */
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del_timer_sync(&lp->timer);
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spin_lock_irq(&lp->lock);
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netif_stop_queue(dev);
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r6040_down(dev);
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spin_unlock_irq(&lp->lock);
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return 0;
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}
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/* Status of PHY CHIP */
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static int phy_mode_chk(struct net_device *dev)
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{
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struct r6040_private *lp = netdev_priv(dev);
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void __iomem *ioaddr = lp->base;
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int phy_dat;
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/* PHY Link Status Check */
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phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
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if (!(phy_dat & 0x4))
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phy_dat = 0x8000; /* Link Failed, full duplex */
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/* PHY Chip Auto-Negotiation Status */
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phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
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if (phy_dat & 0x0020) {
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/* Auto Negotiation Mode */
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phy_dat = phy_read(ioaddr, lp->phy_addr, 5);
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phy_dat &= phy_read(ioaddr, lp->phy_addr, 4);
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if (phy_dat & 0x140)
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/* Force full duplex */
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phy_dat = 0x8000;
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else
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phy_dat = 0;
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} else {
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/* Force Mode */
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phy_dat = phy_read(ioaddr, lp->phy_addr, 0);
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if (phy_dat & 0x100)
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phy_dat = 0x8000;
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else
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|
phy_dat = 0x0000;
|
|
}
|
|
|
|
return phy_dat;
|
|
};
|
|
|
|
static void r6040_set_carrier(struct mii_if_info *mii)
|
|
{
|
|
if (phy_mode_chk(mii->dev)) {
|
|
/* autoneg is off: Link is always assumed to be up */
|
|
if (!netif_carrier_ok(mii->dev))
|
|
netif_carrier_on(mii->dev);
|
|
} else
|
|
phy_mode_chk(mii->dev);
|
|
}
|
|
|
|
static int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
|
|
{
|
|
struct r6040_private *lp = netdev_priv(dev);
|
|
struct mii_ioctl_data *data = if_mii(rq);
|
|
int rc;
|
|
|
|
if (!netif_running(dev))
|
|
return -EINVAL;
|
|
spin_lock_irq(&lp->lock);
|
|
rc = generic_mii_ioctl(&lp->mii_if, data, cmd, NULL);
|
|
spin_unlock_irq(&lp->lock);
|
|
r6040_set_carrier(&lp->mii_if);
|
|
return rc;
|
|
}
|
|
|
|
static int r6040_rx(struct net_device *dev, int limit)
|
|
{
|
|
struct r6040_private *priv = netdev_priv(dev);
|
|
int count;
|
|
void __iomem *ioaddr = priv->base;
|
|
u16 err;
|
|
|
|
for (count = 0; count < limit; ++count) {
|
|
struct r6040_descriptor *descptr = priv->rx_remove_ptr;
|
|
struct sk_buff *skb_ptr;
|
|
|
|
/* Disable RX interrupt */
|
|
iowrite16(ioread16(ioaddr + MIER) & (~RX_INT), ioaddr + MIER);
|
|
descptr = priv->rx_remove_ptr;
|
|
|
|
/* Check for errors */
|
|
err = ioread16(ioaddr + MLSR);
|
|
if (err & 0x0400)
|
|
dev->stats.rx_errors++;
|
|
/* RX FIFO over-run */
|
|
if (err & 0x8000)
|
|
dev->stats.rx_fifo_errors++;
|
|
/* RX descriptor unavailable */
|
|
if (err & 0x0080)
|
|
dev->stats.rx_frame_errors++;
|
|
/* Received packet with length over buffer lenght */
|
|
if (err & 0x0020)
|
|
dev->stats.rx_over_errors++;
|
|
/* Received packet with too long or short */
|
|
if (err & (0x0010 | 0x0008))
|
|
dev->stats.rx_length_errors++;
|
|
/* Received packet with CRC errors */
|
|
if (err & 0x0004) {
|
|
spin_lock(&priv->lock);
|
|
dev->stats.rx_crc_errors++;
|
|
spin_unlock(&priv->lock);
|
|
}
|
|
|
|
while (priv->rx_free_desc) {
|
|
/* No RX packet */
|
|
if (descptr->status & 0x8000)
|
|
break;
|
|
skb_ptr = descptr->skb_ptr;
|
|
if (!skb_ptr) {
|
|
printk(KERN_ERR "%s: Inconsistent RX"
|
|
"descriptor chain\n",
|
|
dev->name);
|
|
break;
|
|
}
|
|
descptr->skb_ptr = NULL;
|
|
skb_ptr->dev = priv->dev;
|
|
/* Do not count the CRC */
|
|
skb_put(skb_ptr, descptr->len - 4);
|
|
pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf),
|
|
MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
|
|
skb_ptr->protocol = eth_type_trans(skb_ptr, priv->dev);
|
|
/* Send to upper layer */
|
|
netif_receive_skb(skb_ptr);
|
|
dev->last_rx = jiffies;
|
|
dev->stats.rx_packets++;
|
|
dev->stats.rx_bytes += descptr->len;
|
|
/* To next descriptor */
|
|
descptr = descptr->vndescp;
|
|
priv->rx_free_desc--;
|
|
}
|
|
priv->rx_remove_ptr = descptr;
|
|
}
|
|
/* Allocate new RX buffer */
|
|
if (priv->rx_free_desc < RX_DCNT)
|
|
rx_buf_alloc(priv, priv->dev);
|
|
|
|
return count;
|
|
}
|
|
|
|
static void r6040_tx(struct net_device *dev)
|
|
{
|
|
struct r6040_private *priv = netdev_priv(dev);
|
|
struct r6040_descriptor *descptr;
|
|
void __iomem *ioaddr = priv->base;
|
|
struct sk_buff *skb_ptr;
|
|
u16 err;
|
|
|
|
spin_lock(&priv->lock);
|
|
descptr = priv->tx_remove_ptr;
|
|
while (priv->tx_free_desc < TX_DCNT) {
|
|
/* Check for errors */
|
|
err = ioread16(ioaddr + MLSR);
|
|
|
|
if (err & 0x0200)
|
|
dev->stats.rx_fifo_errors++;
|
|
if (err & (0x2000 | 0x4000))
|
|
dev->stats.tx_carrier_errors++;
|
|
|
|
if (descptr->status & 0x8000)
|
|
break; /* Not complete */
|
|
skb_ptr = descptr->skb_ptr;
|
|
pci_unmap_single(priv->pdev, le32_to_cpu(descptr->buf),
|
|
skb_ptr->len, PCI_DMA_TODEVICE);
|
|
/* Free buffer */
|
|
dev_kfree_skb_irq(skb_ptr);
|
|
descptr->skb_ptr = NULL;
|
|
/* To next descriptor */
|
|
descptr = descptr->vndescp;
|
|
priv->tx_free_desc++;
|
|
}
|
|
priv->tx_remove_ptr = descptr;
|
|
|
|
if (priv->tx_free_desc)
|
|
netif_wake_queue(dev);
|
|
spin_unlock(&priv->lock);
|
|
}
|
|
|
|
static int r6040_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct r6040_private *priv =
|
|
container_of(napi, struct r6040_private, napi);
|
|
struct net_device *dev = priv->dev;
|
|
void __iomem *ioaddr = priv->base;
|
|
int work_done;
|
|
|
|
work_done = r6040_rx(dev, budget);
|
|
|
|
if (work_done < budget) {
|
|
netif_rx_complete(dev, napi);
|
|
/* Enable RX interrupt */
|
|
iowrite16(ioread16(ioaddr + MIER) | RX_INT, ioaddr + MIER);
|
|
}
|
|
return work_done;
|
|
}
|
|
|
|
/* The RDC interrupt handler. */
|
|
static irqreturn_t r6040_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
struct r6040_private *lp = netdev_priv(dev);
|
|
void __iomem *ioaddr = lp->base;
|
|
u16 status;
|
|
|
|
/* Mask off RDC MAC interrupt */
|
|
iowrite16(MSK_INT, ioaddr + MIER);
|
|
/* Read MISR status and clear */
|
|
status = ioread16(ioaddr + MISR);
|
|
|
|
if (status == 0x0000 || status == 0xffff)
|
|
return IRQ_NONE;
|
|
|
|
/* RX interrupt request */
|
|
if (status & 0x01) {
|
|
netif_rx_schedule(dev, &lp->napi);
|
|
iowrite16(TX_INT, ioaddr + MIER);
|
|
}
|
|
|
|
/* TX interrupt request */
|
|
if (status & 0x10)
|
|
r6040_tx(dev);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static void r6040_poll_controller(struct net_device *dev)
|
|
{
|
|
disable_irq(dev->irq);
|
|
r6040_interrupt(dev->irq, dev);
|
|
enable_irq(dev->irq);
|
|
}
|
|
#endif
|
|
|
|
/* Init RDC MAC */
|
|
static void r6040_up(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = netdev_priv(dev);
|
|
void __iomem *ioaddr = lp->base;
|
|
|
|
/* Initialise and alloc RX/TX buffers */
|
|
r6040_alloc_txbufs(dev);
|
|
r6040_alloc_rxbufs(dev);
|
|
|
|
/* Buffer Size Register */
|
|
iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR);
|
|
/* Read the PHY ID */
|
|
lp->switch_sig = phy_read(ioaddr, 0, 2);
|
|
|
|
if (lp->switch_sig == ICPLUS_PHY_ID) {
|
|
phy_write(ioaddr, 29, 31, 0x175C); /* Enable registers */
|
|
lp->phy_mode = 0x8000;
|
|
} else {
|
|
/* PHY Mode Check */
|
|
phy_write(ioaddr, lp->phy_addr, 4, PHY_CAP);
|
|
phy_write(ioaddr, lp->phy_addr, 0, PHY_MODE);
|
|
|
|
if (PHY_MODE == 0x3100)
|
|
lp->phy_mode = phy_mode_chk(dev);
|
|
else
|
|
lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
|
|
}
|
|
/* MAC Bus Control Register */
|
|
iowrite16(MBCR_DEFAULT, ioaddr + MBCR);
|
|
|
|
/* MAC TX/RX Enable */
|
|
lp->mcr0 |= lp->phy_mode;
|
|
iowrite16(lp->mcr0, ioaddr);
|
|
|
|
/* set interrupt waiting time and packet numbers */
|
|
iowrite16(0x0F06, ioaddr + MT_ICR);
|
|
iowrite16(0x0F06, ioaddr + MR_ICR);
|
|
|
|
/* improve performance (by RDC guys) */
|
|
phy_write(ioaddr, 30, 17, (phy_read(ioaddr, 30, 17) | 0x4000));
|
|
phy_write(ioaddr, 30, 17, ~((~phy_read(ioaddr, 30, 17)) | 0x2000));
|
|
phy_write(ioaddr, 0, 19, 0x0000);
|
|
phy_write(ioaddr, 0, 30, 0x01F0);
|
|
|
|
/* Interrupt Mask Register */
|
|
iowrite16(INT_MASK, ioaddr + MIER);
|
|
}
|
|
|
|
/*
|
|
A periodic timer routine
|
|
Polling PHY Chip Link Status
|
|
*/
|
|
static void r6040_timer(unsigned long data)
|
|
{
|
|
struct net_device *dev = (struct net_device *)data;
|
|
struct r6040_private *lp = netdev_priv(dev);
|
|
void __iomem *ioaddr = lp->base;
|
|
u16 phy_mode;
|
|
|
|
/* Polling PHY Chip Status */
|
|
if (PHY_MODE == 0x3100)
|
|
phy_mode = phy_mode_chk(dev);
|
|
else
|
|
phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
|
|
|
|
if (phy_mode != lp->phy_mode) {
|
|
lp->phy_mode = phy_mode;
|
|
lp->mcr0 = (lp->mcr0 & 0x7fff) | phy_mode;
|
|
iowrite16(lp->mcr0, ioaddr);
|
|
printk(KERN_INFO "Link Change %x \n", ioread16(ioaddr));
|
|
}
|
|
|
|
/* Timer active again */
|
|
mod_timer(&lp->timer, round_jiffies(jiffies + HZ));
|
|
}
|
|
|
|
/* Read/set MAC address routines */
|
|
static void r6040_mac_address(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = netdev_priv(dev);
|
|
void __iomem *ioaddr = lp->base;
|
|
u16 *adrp;
|
|
|
|
/* MAC operation register */
|
|
iowrite16(0x01, ioaddr + MCR1); /* Reset MAC */
|
|
iowrite16(2, ioaddr + MAC_SM); /* Reset internal state machine */
|
|
iowrite16(0, ioaddr + MAC_SM);
|
|
udelay(5000);
|
|
|
|
/* Restore MAC Address */
|
|
adrp = (u16 *) dev->dev_addr;
|
|
iowrite16(adrp[0], ioaddr + MID_0L);
|
|
iowrite16(adrp[1], ioaddr + MID_0M);
|
|
iowrite16(adrp[2], ioaddr + MID_0H);
|
|
}
|
|
|
|
static int r6040_open(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = netdev_priv(dev);
|
|
int ret;
|
|
|
|
/* Request IRQ and Register interrupt handler */
|
|
ret = request_irq(dev->irq, &r6040_interrupt,
|
|
IRQF_SHARED, dev->name, dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Set MAC address */
|
|
r6040_mac_address(dev);
|
|
|
|
/* Allocate Descriptor memory */
|
|
lp->rx_ring =
|
|
pci_alloc_consistent(lp->pdev, RX_DESC_SIZE, &lp->rx_ring_dma);
|
|
if (!lp->rx_ring)
|
|
return -ENOMEM;
|
|
|
|
lp->tx_ring =
|
|
pci_alloc_consistent(lp->pdev, TX_DESC_SIZE, &lp->tx_ring_dma);
|
|
if (!lp->tx_ring) {
|
|
pci_free_consistent(lp->pdev, RX_DESC_SIZE, lp->rx_ring,
|
|
lp->rx_ring_dma);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
r6040_up(dev);
|
|
|
|
napi_enable(&lp->napi);
|
|
netif_start_queue(dev);
|
|
|
|
/* set and active a timer process */
|
|
setup_timer(&lp->timer, r6040_timer, (unsigned long) dev);
|
|
if (lp->switch_sig != ICPLUS_PHY_ID)
|
|
mod_timer(&lp->timer, jiffies + HZ);
|
|
return 0;
|
|
}
|
|
|
|
static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = netdev_priv(dev);
|
|
struct r6040_descriptor *descptr;
|
|
void __iomem *ioaddr = lp->base;
|
|
unsigned long flags;
|
|
int ret = NETDEV_TX_OK;
|
|
|
|
/* Critical Section */
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
|
|
/* TX resource check */
|
|
if (!lp->tx_free_desc) {
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
netif_stop_queue(dev);
|
|
printk(KERN_ERR DRV_NAME ": no tx descriptor\n");
|
|
ret = NETDEV_TX_BUSY;
|
|
return ret;
|
|
}
|
|
|
|
/* Statistic Counter */
|
|
dev->stats.tx_packets++;
|
|
dev->stats.tx_bytes += skb->len;
|
|
/* Set TX descriptor & Transmit it */
|
|
lp->tx_free_desc--;
|
|
descptr = lp->tx_insert_ptr;
|
|
if (skb->len < MISR)
|
|
descptr->len = MISR;
|
|
else
|
|
descptr->len = skb->len;
|
|
|
|
descptr->skb_ptr = skb;
|
|
descptr->buf = cpu_to_le32(pci_map_single(lp->pdev,
|
|
skb->data, skb->len, PCI_DMA_TODEVICE));
|
|
descptr->status = 0x8000;
|
|
/* Trigger the MAC to check the TX descriptor */
|
|
iowrite16(0x01, ioaddr + MTPR);
|
|
lp->tx_insert_ptr = descptr->vndescp;
|
|
|
|
/* If no tx resource, stop */
|
|
if (!lp->tx_free_desc)
|
|
netif_stop_queue(dev);
|
|
|
|
dev->trans_start = jiffies;
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
return ret;
|
|
}
|
|
|
|
static void r6040_multicast_list(struct net_device *dev)
|
|
{
|
|
struct r6040_private *lp = netdev_priv(dev);
|
|
void __iomem *ioaddr = lp->base;
|
|
u16 *adrp;
|
|
u16 reg;
|
|
unsigned long flags;
|
|
struct dev_mc_list *dmi = dev->mc_list;
|
|
int i;
|
|
|
|
/* MAC Address */
|
|
adrp = (u16 *)dev->dev_addr;
|
|
iowrite16(adrp[0], ioaddr + MID_0L);
|
|
iowrite16(adrp[1], ioaddr + MID_0M);
|
|
iowrite16(adrp[2], ioaddr + MID_0H);
|
|
|
|
/* Promiscous Mode */
|
|
spin_lock_irqsave(&lp->lock, flags);
|
|
|
|
/* Clear AMCP & PROM bits */
|
|
reg = ioread16(ioaddr) & ~0x0120;
|
|
if (dev->flags & IFF_PROMISC) {
|
|
reg |= 0x0020;
|
|
lp->mcr0 |= 0x0020;
|
|
}
|
|
/* Too many multicast addresses
|
|
* accept all traffic */
|
|
else if ((dev->mc_count > MCAST_MAX)
|
|
|| (dev->flags & IFF_ALLMULTI))
|
|
reg |= 0x0020;
|
|
|
|
iowrite16(reg, ioaddr);
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
|
|
|
/* Build the hash table */
|
|
if (dev->mc_count > MCAST_MAX) {
|
|
u16 hash_table[4];
|
|
u32 crc;
|
|
|
|
for (i = 0; i < 4; i++)
|
|
hash_table[i] = 0;
|
|
|
|
for (i = 0; i < dev->mc_count; i++) {
|
|
char *addrs = dmi->dmi_addr;
|
|
|
|
dmi = dmi->next;
|
|
|
|
if (!(*addrs & 1))
|
|
continue;
|
|
|
|
crc = ether_crc_le(6, addrs);
|
|
crc >>= 26;
|
|
hash_table[crc >> 4] |= 1 << (15 - (crc & 0xf));
|
|
}
|
|
/* Write the index of the hash table */
|
|
for (i = 0; i < 4; i++)
|
|
iowrite16(hash_table[i] << 14, ioaddr + MCR1);
|
|
/* Fill the MAC hash tables with their values */
|
|
iowrite16(hash_table[0], ioaddr + MAR0);
|
|
iowrite16(hash_table[1], ioaddr + MAR1);
|
|
iowrite16(hash_table[2], ioaddr + MAR2);
|
|
iowrite16(hash_table[3], ioaddr + MAR3);
|
|
}
|
|
/* Multicast Address 1~4 case */
|
|
for (i = 0, dmi; (i < dev->mc_count) && (i < MCAST_MAX); i++) {
|
|
adrp = (u16 *)dmi->dmi_addr;
|
|
iowrite16(adrp[0], ioaddr + MID_1L + 8*i);
|
|
iowrite16(adrp[1], ioaddr + MID_1M + 8*i);
|
|
iowrite16(adrp[2], ioaddr + MID_1H + 8*i);
|
|
dmi = dmi->next;
|
|
}
|
|
for (i = dev->mc_count; i < MCAST_MAX; i++) {
|
|
iowrite16(0xffff, ioaddr + MID_0L + 8*i);
|
|
iowrite16(0xffff, ioaddr + MID_0M + 8*i);
|
|
iowrite16(0xffff, ioaddr + MID_0H + 8*i);
|
|
}
|
|
}
|
|
|
|
static void netdev_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
struct r6040_private *rp = netdev_priv(dev);
|
|
|
|
strcpy(info->driver, DRV_NAME);
|
|
strcpy(info->version, DRV_VERSION);
|
|
strcpy(info->bus_info, pci_name(rp->pdev));
|
|
}
|
|
|
|
static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct r6040_private *rp = netdev_priv(dev);
|
|
int rc;
|
|
|
|
spin_lock_irq(&rp->lock);
|
|
rc = mii_ethtool_gset(&rp->mii_if, cmd);
|
|
spin_unlock_irq(&rp->lock);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
|
|
{
|
|
struct r6040_private *rp = netdev_priv(dev);
|
|
int rc;
|
|
|
|
spin_lock_irq(&rp->lock);
|
|
rc = mii_ethtool_sset(&rp->mii_if, cmd);
|
|
spin_unlock_irq(&rp->lock);
|
|
r6040_set_carrier(&rp->mii_if);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static u32 netdev_get_link(struct net_device *dev)
|
|
{
|
|
struct r6040_private *rp = netdev_priv(dev);
|
|
|
|
return mii_link_ok(&rp->mii_if);
|
|
}
|
|
|
|
static struct ethtool_ops netdev_ethtool_ops = {
|
|
.get_drvinfo = netdev_get_drvinfo,
|
|
.get_settings = netdev_get_settings,
|
|
.set_settings = netdev_set_settings,
|
|
.get_link = netdev_get_link,
|
|
};
|
|
|
|
static int __devinit r6040_init_one(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
struct net_device *dev;
|
|
struct r6040_private *lp;
|
|
void __iomem *ioaddr;
|
|
int err, io_size = R6040_IO_SIZE;
|
|
static int card_idx = -1;
|
|
int bar = 0;
|
|
long pioaddr;
|
|
u16 *adrp;
|
|
|
|
printk(KERN_INFO "%s\n", version);
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err)
|
|
return err;
|
|
|
|
/* this should always be supported */
|
|
if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
|
|
printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses"
|
|
"not supported by the card\n");
|
|
return -ENODEV;
|
|
}
|
|
if (pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
|
|
printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses"
|
|
"not supported by the card\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* IO Size check */
|
|
if (pci_resource_len(pdev, 0) < io_size) {
|
|
printk(KERN_ERR "Insufficient PCI resources, aborting\n");
|
|
return -EIO;
|
|
}
|
|
|
|
pioaddr = pci_resource_start(pdev, 0); /* IO map base address */
|
|
pci_set_master(pdev);
|
|
|
|
dev = alloc_etherdev(sizeof(struct r6040_private));
|
|
if (!dev) {
|
|
printk(KERN_ERR "Failed to allocate etherdev\n");
|
|
return -ENOMEM;
|
|
}
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
lp = netdev_priv(dev);
|
|
lp->pdev = pdev;
|
|
|
|
if (pci_request_regions(pdev, DRV_NAME)) {
|
|
printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
|
|
err = -ENODEV;
|
|
goto err_out_disable;
|
|
}
|
|
|
|
ioaddr = pci_iomap(pdev, bar, io_size);
|
|
if (!ioaddr) {
|
|
printk(KERN_ERR "ioremap failed for device %s\n",
|
|
pci_name(pdev));
|
|
return -EIO;
|
|
}
|
|
|
|
/* Init system & device */
|
|
lp->base = ioaddr;
|
|
dev->irq = pdev->irq;
|
|
|
|
spin_lock_init(&lp->lock);
|
|
pci_set_drvdata(pdev, dev);
|
|
|
|
/* Set MAC address */
|
|
card_idx++;
|
|
|
|
adrp = (u16 *)dev->dev_addr;
|
|
adrp[0] = ioread16(ioaddr + MID_0L);
|
|
adrp[1] = ioread16(ioaddr + MID_0M);
|
|
adrp[2] = ioread16(ioaddr + MID_0H);
|
|
|
|
/* Link new device into r6040_root_dev */
|
|
lp->pdev = pdev;
|
|
|
|
/* Init RDC private data */
|
|
lp->mcr0 = 0x1002;
|
|
lp->phy_addr = phy_table[card_idx];
|
|
lp->switch_sig = 0;
|
|
|
|
/* The RDC-specific entries in the device structure. */
|
|
dev->open = &r6040_open;
|
|
dev->hard_start_xmit = &r6040_start_xmit;
|
|
dev->stop = &r6040_close;
|
|
dev->get_stats = r6040_get_stats;
|
|
dev->set_multicast_list = &r6040_multicast_list;
|
|
dev->do_ioctl = &r6040_ioctl;
|
|
dev->ethtool_ops = &netdev_ethtool_ops;
|
|
dev->tx_timeout = &r6040_tx_timeout;
|
|
dev->watchdog_timeo = TX_TIMEOUT;
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
dev->poll_controller = r6040_poll_controller;
|
|
#endif
|
|
netif_napi_add(dev, &lp->napi, r6040_poll, 64);
|
|
lp->mii_if.dev = dev;
|
|
lp->mii_if.mdio_read = mdio_read;
|
|
lp->mii_if.mdio_write = mdio_write;
|
|
lp->mii_if.phy_id = lp->phy_addr;
|
|
lp->mii_if.phy_id_mask = 0x1f;
|
|
lp->mii_if.reg_num_mask = 0x1f;
|
|
|
|
/* Register net device. After this dev->name assign */
|
|
err = register_netdev(dev);
|
|
if (err) {
|
|
printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
|
|
goto err_out_res;
|
|
}
|
|
return 0;
|
|
|
|
err_out_res:
|
|
pci_release_regions(pdev);
|
|
err_out_disable:
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
free_netdev(dev);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void __devexit r6040_remove_one(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *dev = pci_get_drvdata(pdev);
|
|
|
|
unregister_netdev(dev);
|
|
pci_release_regions(pdev);
|
|
free_netdev(dev);
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
|
|
|
|
static struct pci_device_id r6040_pci_tbl[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_RDC, 0x6040) },
|
|
{ 0 }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, r6040_pci_tbl);
|
|
|
|
static struct pci_driver r6040_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = r6040_pci_tbl,
|
|
.probe = r6040_init_one,
|
|
.remove = __devexit_p(r6040_remove_one),
|
|
};
|
|
|
|
|
|
static int __init r6040_init(void)
|
|
{
|
|
return pci_register_driver(&r6040_driver);
|
|
}
|
|
|
|
|
|
static void __exit r6040_cleanup(void)
|
|
{
|
|
pci_unregister_driver(&r6040_driver);
|
|
}
|
|
|
|
module_init(r6040_init);
|
|
module_exit(r6040_cleanup);
|