diff options
Diffstat (limited to 'target/linux/rdc/files/drivers/net')
| -rw-r--r-- | target/linux/rdc/files/drivers/net/r6040.c | 1646 |
1 files changed, 847 insertions, 799 deletions
diff --git a/target/linux/rdc/files/drivers/net/r6040.c b/target/linux/rdc/files/drivers/net/r6040.c index 6678f01a1..2334f4ebf 100644 --- a/target/linux/rdc/files/drivers/net/r6040.c +++ b/target/linux/rdc/files/drivers/net/r6040.c @@ -1,42 +1,57 @@ -/* r6040.c: A RDC R6040 FastEthernet driver for linux. */ /* - Re-written 2004 by Sten Wang. - - Copyright 1994-2000 by Donald Becker. - Copyright 1993 United States Government as represented by the - Director, National Security Agency. This software may be used and - distributed according to the terms of the GNU General Public License, - incorporated herein by reference. - - This driver is for RDC R6040 FastEthernet MAC series. - For kernel version after 2.4.22 - - Modification List - ---------- ------------------------------------------------ - 10-07-2007 Clean up the driver using checkpatch - 08-24-2006 Support at linux 2.6.10 above - 03-24-2006 Support NAPI - 03-21-2006 By Charies,change spin_lock_irqsave(lp->lock, flags) - to spin_lock_irqsave(&lp->lock, flags) - in set_multicast_list - 03-15-2006 Modify the set_multicast_list ,due to when re-plug the ethernet, - it will forget the previous setting - 07-12-2005 Tim, modify the set_multicast_list - 03-28-2005 Tim, modify some error mac register offset in - function set_multicast_list - 03-27-2005 Tim, Add the internal state machine reset - Sten, If multicast address more than 4, enter PROM mode - Changed rdc to r6040 - 12-22-2004 Sten Init MAC MBCR register=0x012A - PHY_CAP = 0x01E1 - - Need to Do LIst: - 1. If multicast address more than 4, use the multicast address hash + * RDC R6040 Fast Ethernet MAC support + * + * Copyright (C) 2004 Sten Wang <sten.wang@rdc.com.tw> + * Copyright (C) 2007 + * Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us> + * Florian Fainelli <florian@openwrt.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the + * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/version.h> +#include <linux/moduleparam.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/crc32.h> +#include <linux/spinlock.h> +#include <linux/bitops.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/uaccess.h> + +#include <asm/processor.h> + #define DRV_NAME "r6040" -#define DRV_VERSION "0.13" -#define DRV_RELDATE "24Aug2006" +#define DRV_VERSION "0.16" +#define DRV_RELDATE "10Nov2007" /* PHY CHIP Address */ #define PHY1_ADDR 1 /* For MAC1 */ @@ -45,84 +60,95 @@ #define PHY_CAP 0x01E1 /* PHY CHIP Register 4 */ /* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (6000 * HZ / 1000) +#define TX_TIMEOUT (6000 * HZ / 1000) #define TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */ -/* RDC MAC ID */ -#define RDC_MAC_ID 0x6040 - /* RDC MAC I/O Size */ #define R6040_IO_SIZE 256 -/* RDC Chip PCI Command */ -#define R6040_PCI_CMD 0x0005 /* IO, Master */ - /* MAX RDC MAC */ #define MAX_MAC 2 -/* MAC setting */ +/* MAC registers */ +#define MCR0 0x00 /* Control register 0 */ +#define MCR1 0x04 /* Control register 1 */ +#define MAC_RST 0x0001 /* Reset the MAC */ +#define MBCR 0x08 /* Bus control */ +#define MT_ICR 0x0C /* TX interrupt control */ +#define MR_ICR 0x10 /* RX interrupt control */ +#define MTPR 0x14 /* TX poll command register */ +#define MR_BSR 0x18 /* RX buffer size */ +#define MR_DCR 0x1A /* RX descriptor control */ +#define MLSR 0x1C /* Last status */ +#define MMDIO 0x20 /* MDIO control register */ +#define MDIO_WRITE 0x4000 /* MDIO write */ +#define MDIO_READ 0x2000 /* MDIO read */ +#define MMRD 0x24 /* MDIO read data register */ +#define MMWD 0x28 /* MDIO write data register */ +#define MTD_SA0 0x2C /* TX descriptor start address 0 */ +#define MTD_SA1 0x30 /* TX descriptor start address 1 */ +#define MRD_SA0 0x34 /* RX descriptor start address 0 */ +#define MRD_SA1 0x38 /* RX descriptor start address 1 */ +#define MISR 0x3C /* Status register */ +#define MIER 0x40 /* INT enable register */ +#define MSK_INT 0x0000 /* Mask off interrupts */ +#define ME_CISR 0x44 /* Event counter INT status */ +#define ME_CIER 0x48 /* Event counter INT enable */ +#define MR_CNT 0x50 /* Successfully received packet counter */ +#define ME_CNT0 0x52 /* Event counter 0 */ +#define ME_CNT1 0x54 /* Event counter 1 */ +#define ME_CNT2 0x56 /* Event counter 2 */ +#define ME_CNT3 0x58 /* Event counter 3 */ +#define MT_CNT 0x5A /* Successfully transmit packet counter */ +#define ME_CNT4 0x5C /* Event counter 4 */ +#define MP_CNT 0x5E /* Pause frame counter register */ +#define MAR0 0x60 /* Hash table 0 */ +#define MAR1 0x62 /* Hash table 1 */ +#define MAR2 0x64 /* Hash table 2 */ +#define MAR3 0x66 /* Hash table 3 */ +#define MID_0L 0x68 /* Multicast address MID0 Low */ +#define MID_0M 0x6A /* Multicast address MID0 Medium */ +#define MID_0H 0x6C /* Multicast address MID0 High */ +#define MID_1L 0x70 /* MID1 Low */ +#define MID_1M 0x72 /* MID1 Medium */ +#define MID_1H 0x74 /* MID1 High */ +#define MID_2L 0x78 /* MID2 Low */ +#define MID_2M 0x7A /* MID2 Medium */ +#define MID_2H 0x7C /* MID2 High */ +#define MID_3L 0x80 /* MID3 Low */ +#define MID_3M 0x82 /* MID3 Medium */ +#define MID_3H 0x84 /* MID3 High */ +#define PHY_CC 0x88 /* PHY status change configuration register */ +#define PHY_ST 0x8A /* PHY status register */ +#define MAC_SM 0xAC /* MAC status machine */ +#define MAC_ID 0xBE /* Identifier register */ + #define TX_DCNT 0x80 /* TX descriptor count */ #define RX_DCNT 0x80 /* RX descriptor count */ #define MAX_BUF_SIZE 0x600 -#define ALLOC_DESC_SIZE ((TX_DCNT+RX_DCNT)*sizeof(struct r6040_descriptor)+0x10) +#define RX_DESC_SIZE (RX_DCNT * sizeof(struct r6040_descriptor)) +#define TX_DESC_SIZE (TX_DCNT * sizeof(struct r6040_descriptor)) #define MBCR_DEFAULT 0x012A /* MAC Bus Control Register */ +#define MCAST_MAX 4 /* Max number multicast addresses to filter */ /* PHY settings */ #define ICPLUS_PHY_ID 0x0243 -/* Debug enable or not */ -#define RDC_DEBUG 0 - -#if RDC_DEBUG > 1 -#define RDC_DBUG(msg, value) printk(KERN_ERR "%s %x\n", msg, value); -#else -#define RDC_DBUG(msg, value) -#endif - - -#include <linux/module.h> -#include <linux/version.h> -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) -#include <linux/moduleparam.h> -#endif -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/timer.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/mii.h> -#include <linux/ethtool.h> -#include <linux/crc32.h> -#include <linux/spinlock.h> - -#include <asm/processor.h> -#include <asm/bitops.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/uaccess.h> - -MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>, Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>, Florian Fainelli <florian@openwrt.org>"); +MODULE_AUTHOR("Sten Wang <sten.wang@rdc.com.tw>," + "Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>," + "Florian Fainelli <florian@openwrt.org>"); MODULE_LICENSE("GPL"); -#ifdef CONFIG_R6040_NAPI -MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet Driver"); -#else -MODULE_DESCRIPTION("RDC R6040 PCI FastEthernet Driver"); -#endif +MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver"); -#define R6040_INT_MASK 0x0011 +#define RX_INT 0x0001 +#define TX_INT 0x0010 +#define RX_NO_DESC_INT 0x0002 +#define INT_MASK (RX_INT | TX_INT) struct r6040_descriptor { u16 status, len; /* 0-3 */ - u32 buf; /* 4-7 */ - u32 ndesc; /* 8-B */ + __le32 buf; /* 4-7 */ + __le32 ndesc; /* 8-B */ u32 rev1; /* C-F */ char *vbufp; /* 10-13 */ struct r6040_descriptor *vndescp; /* 14-17 */ @@ -131,728 +157,481 @@ struct r6040_descriptor { } __attribute__((aligned(32))); struct r6040_private { - struct net_device_stats stats; spinlock_t lock; /* driver lock */ struct timer_list timer; struct pci_dev *pdev; - struct r6040_descriptor *rx_insert_ptr; struct r6040_descriptor *rx_remove_ptr; struct r6040_descriptor *tx_insert_ptr; struct r6040_descriptor *tx_remove_ptr; + struct r6040_descriptor *rx_ring; + struct r6040_descriptor *tx_ring; + dma_addr_t rx_ring_dma; + dma_addr_t tx_ring_dma; u16 tx_free_desc, rx_free_desc, phy_addr, phy_mode; u16 mcr0, mcr1; - dma_addr_t desc_dma; - char *desc_pool; u16 switch_sig; + struct net_device *dev; + struct mii_if_info mii_if; + struct napi_struct napi; + struct net_device_stats stats; + u16 napi_rx_running; + void __iomem *base; }; -struct r6040_chip_info { - const char *name; - u16 pci_flags; - int io_size; - int drv_flags; -}; - -#ifdef CONFIG_R6040_NAPI -static int NAPI_status; -#endif - -static int __devinitdata printed_version; -#ifdef CONFIG_R6040_NAPI -static char version[] __devinitdata = - KERN_INFO DRV_NAME ": RDC R6040 NAPI net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n"; -#else -static char version[] __devinitdata = - KERN_INFO DRV_NAME ": RDC R6040 net driver, version "DRV_VERSION " (" DRV_RELDATE ")\n"; -#endif -static struct r6040_chip_info r6040_chip_info[] __devinitdata = -{ - { "RDC R6040 Knight", R6040_PCI_CMD, R6040_IO_SIZE, 0} -}; -static char *parent; - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) -static int NUM_MAC_TABLE = 2 ; -module_param(parent, charp, 0444); -#else -MODULE_PARM(parent, "s"); -#endif -MODULE_PARM_DESC(parent, "Parent network device name"); - -static int phy_table[] = { 0x1, 0x2}; -static u8 adr_table[2][8] = { - {0x00, 0x00, 0x60, 0x00, 0x00, 0x01}, - {0x00, 0x00, 0x60, 0x00, 0x00, 0x02} -}; - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10) - module_param_array(adr_table, int, &NUM_MAC_TABLE, 0644); -#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) - module_param_array(adr_table, int, NUM_MAC_TABLE, 0644); -#else - MODULE_PARM(adr_table, "2-4i"); -#endif -MODULE_PARM_DESC(adr_table, "MAC Address (assigned)"); - -static int r6040_open(struct net_device *dev); -static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev); -static irqreturn_t r6040_interrupt(int irq, void *dev_id); -static struct net_device_stats *r6040_get_stats(struct net_device *dev); -static int r6040_close(struct net_device *dev); -static void set_multicast_list(struct net_device *dev); -static struct ethtool_ops netdev_ethtool_ops; -static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd); -static void r6040_down(struct net_device *dev); -static void r6040_up(struct net_device *dev); -static void r6040_tx_timeout (struct net_device *dev); -static void r6040_timer(unsigned long); - -static int phy_mode_chk(struct net_device *dev); -static int phy_read(int ioaddr, int phy_adr, int reg_idx); -static void phy_write(int ioaddr, int phy_adr, int reg_idx, int dat); -static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev); -#ifdef CONFIG_R6040_NAPI -static int r6040_poll(struct net_device *netdev, int *budget); -#endif +static char version[] __devinitdata = KERN_INFO DRV_NAME + ": RDC R6040 NAPI net driver," + "version "DRV_VERSION " (" DRV_RELDATE ")\n"; +static int phy_table[] = { PHY1_ADDR, PHY2_ADDR }; -static int __devinit r6040_init_one (struct pci_dev *pdev, - const struct pci_device_id *ent) +/* Read a word data from PHY Chip */ +static int phy_read(void __iomem *ioaddr, int phy_addr, int reg) { - struct net_device *dev; - struct r6040_private *lp; - int ioaddr, io_size, err; - static int card_idx = -1; - int chip_id = (int)ent->driver_data; - - RDC_DBUG("r6040_init_one()", 0); - - if (printed_version++) - 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, 0xffffffff)) { - printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses not supported by the card!?\n"); - return -ENODEV; - } - - /* IO Size check */ - io_size = r6040_chip_info[chip_id].io_size; - if (pci_resource_len (pdev, 0) < io_size) { - return -ENODEV; - } - - ioaddr = pci_resource_start (pdev, 0); /* IO map base address */ - pci_set_master(pdev); - - dev = alloc_etherdev(sizeof(struct r6040_private)); - if (dev == NULL) - return -ENOMEM; - SET_MODULE_OWNER(dev); - - if (pci_request_regions(pdev, DRV_NAME)) { - printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n"); - err = -ENODEV; - goto err_out_disable; - } - - /* Init system & device */ - lp = dev->priv; - dev->base_addr = ioaddr; - dev->irq = pdev->irq; - - spin_lock_init(&lp->lock); - pci_set_drvdata(pdev, dev); - - /* Set MAC address */ - card_idx++; - memcpy(dev->dev_addr, (u8 *)&adr_table[card_idx][0], 6); - - /* 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 = &set_multicast_list; - dev->do_ioctl = &netdev_ioctl; - dev->ethtool_ops = &netdev_ethtool_ops; - dev->tx_timeout = &r6040_tx_timeout; - dev->watchdog_timeo = TX_TIMEOUT; -#ifdef CONFIG_R6040_NAPI - dev->poll = &r6040_poll; - dev->weight = 64; -#endif - - /* 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; + int limit = 2048; + u16 cmd; + + iowrite16(MDIO_READ + reg + (phy_addr << 8), ioaddr + MMDIO); + /* Wait for the read bit to be cleared */ + while (limit--) { + cmd = ioread16(ioaddr + MMDIO); + if (cmd & MDIO_READ) + break; } - netif_carrier_on(dev); - return 0; - -err_out_res: - pci_release_regions(pdev); -err_out_disable: - pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); - kfree(dev); - - return err; + return ioread16(ioaddr + MMRD); } -static void __devexit r6040_remove_one (struct pci_dev *pdev) +/* Write a word data from PHY Chip */ +static void phy_write(void __iomem *ioaddr, int phy_addr, int reg, u16 val) { - struct net_device *dev = pci_get_drvdata(pdev); - - unregister_netdev(dev); - pci_release_regions(pdev); - kfree(dev); - pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); + int limit = 2048; + u16 cmd; + + iowrite16(val, ioaddr + MMWD); + /* Write the command to the MDIO bus */ + iowrite16(MDIO_WRITE + reg + (phy_addr << 8), ioaddr + MMDIO); + /* Wait for the write bit to be cleared */ + while (limit--) { + cmd = ioread16(ioaddr + MMDIO); + if (cmd & MDIO_WRITE) + break; + } } -static int -r6040_open(struct net_device *dev) +static int mdio_read(struct net_device *dev, int mii_id, int reg) { - struct r6040_private *lp = dev->priv; - int i; - - RDC_DBUG("r6040_open()", 0); - - /* Request IRQ and Register interrupt handler */ - i = request_irq(dev->irq, &r6040_interrupt, SA_SHIRQ, dev->name, dev); - if (i) return i; + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; - /* Allocate Descriptor memory */ - lp->desc_pool = pci_alloc_consistent(lp->pdev, ALLOC_DESC_SIZE, &lp->desc_dma); - if (!lp->desc_pool) - return -ENOMEM; - - r6040_up(dev); + return (phy_read(ioaddr, lp->phy_addr, reg)); +} - netif_start_queue(dev); +static void mdio_write(struct net_device *dev, int mii_id, int reg, int val) +{ + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; - if (lp->switch_sig != ICPLUS_PHY_ID) { - /* set and active a timer process */ - init_timer(&lp->timer); - lp->timer.expires = TIMER_WUT; - lp->timer.data = (unsigned long)dev; - lp->timer.function = &r6040_timer; - add_timer(&lp->timer); - } - return 0; + phy_write(ioaddr, lp->phy_addr, reg, val); } -static void -r6040_tx_timeout (struct net_device *dev) +static void r6040_tx_timeout(struct net_device *dev) { - struct r6040_private *lp = dev->priv; - /* int ioaddr = dev->base_addr; - struct r6040_descriptor *descptr = lp->tx_remove_ptr; */ + struct r6040_private *priv = netdev_priv(dev); - RDC_DBUG("r6040_tx_timeout()", 0); + disable_irq(dev->irq); + napi_disable(&priv->napi); + spin_lock(&priv->lock); + dev->stats.tx_errors++; + spin_unlock(&priv->lock); - /* Transmitter timeout, serious problems. */ - /* Sten: Nothing need to do so far. */ - printk(KERN_ERR DRV_NAME ": Big Trobule, transmit timeout/n"); - lp->stats.tx_errors++; netif_stop_queue(dev); - -//printk("<RDC> XMT timedout: CR0 %x, CR40 %x, CR3C %x, CR2C %x, CR30 %x, CR34 %x, CR38 %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c), inw(ioaddr+0x2c), inw(ioaddr+0x30), inw(ioaddr+0x34), inw(ioaddr+0x38)); - -//printk("<RDC> XMT_TO: %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp); } - -static int -r6040_start_xmit(struct sk_buff *skb, struct net_device *dev) +/* Allocate skb buffer for rx descriptor */ +static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev) { - struct r6040_private *lp = dev->priv; struct r6040_descriptor *descptr; - int ioaddr = dev->base_addr; - unsigned long flags; - - RDC_DBUG("r6040_start_xmit()", 0); - - if (skb == NULL) /* NULL skb directly return */ - return 0; - if (skb->len >= MAX_BUF_SIZE) { /* Packet too long, drop it */ - dev_kfree_skb(skb); - return 0; - } + void __iomem *ioaddr = lp->base; - /* Critical Section */ - spin_lock_irqsave(&lp->lock, flags); + descptr = lp->rx_insert_ptr; + while (lp->rx_free_desc < RX_DCNT) { + descptr->skb_ptr = dev_alloc_skb(MAX_BUF_SIZE); - /* TX resource check */ - if (!lp->tx_free_desc) { - spin_unlock_irqrestore(&lp->lock, flags); - printk(KERN_ERR DRV_NAME ": NO TX DESC "); - return 1; + if (!descptr->skb_ptr) + break; + descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, + descptr->skb_ptr->data, + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); + descptr->status = 0x8000; + descptr = descptr->vndescp; + lp->rx_free_desc++; + /* Trigger RX DMA */ + iowrite16(lp->mcr0 | 0x0002, ioaddr); } - - /* Statistic Counter */ - lp->stats.tx_packets++; - lp->stats.tx_bytes += skb->len; - - /* Set TX descriptor & Transmit it */ - lp->tx_free_desc--; - descptr = lp->tx_insert_ptr; - if (skb->len < 0x3c) - descptr->len = 0x3c; - 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; - outw(0x01, ioaddr + 0x14); - lp->tx_insert_ptr = descptr->vndescp; - -#if RDC_DEBUG - printk("Xmit(): %08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp); -#endif - - /* 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 0; + lp->rx_insert_ptr = descptr; } -/* The RDC interrupt handler. */ -static irqreturn_t -r6040_interrupt(int irq, void *dev_id) + +static struct net_device_stats *r6040_get_stats(struct net_device *dev) { - struct net_device *dev = dev_id; - struct r6040_private *lp; - struct r6040_descriptor *descptr; - struct sk_buff *skb_ptr; - int ioaddr, status; + struct r6040_private *priv = netdev_priv(dev); + void __iomem *ioaddr = priv->base; unsigned long flags; -#ifdef CONFIG_R6040_NAPI - int handled = 1; -#else - int handled = 0; -#endif - RDC_DBUG("r6040_interrupt()", 0); - if (dev == NULL) { - printk (KERN_ERR DRV_NAME ": INT() unknown device.\n"); - return IRQ_RETVAL(handled); - } + spin_lock_irqsave(&priv->lock, flags); + priv->stats.rx_crc_errors += ioread8(ioaddr + ME_CNT1); + priv->stats.multicast += ioread8(ioaddr + ME_CNT0); + spin_unlock_irqrestore(&priv->lock, flags); - lp = (struct r6040_private *)dev->priv; - spin_lock_irqsave(&lp->lock, flags); + return &priv->stats; +} - /* Check MAC Interrupt status */ - ioaddr = dev->base_addr; - outw(0x0, ioaddr + 0x40); /* Mask Off RDC MAC interrupt */ - status = inw(ioaddr + 0x3c); /* Read INTR status and clear */ - +/* Stop RDC MAC and Free the allocated resource */ +static void r6040_down(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + struct pci_dev *pdev = lp->pdev; + int i; + int limit = 2048; + u16 *adrp; + u16 cmd; -#ifdef CONFIG_R6040_NAPI - if (netif_rx_schedule_prep(dev)) { - NAPI_status = status; - __netif_rx_schedule(dev); + /* Stop MAC */ + iowrite16(MSK_INT, ioaddr + MIER); /* Mask Off Interrupt */ + iowrite16(MAC_RST, ioaddr + MCR1); /* Reset RDC MAC */ + while (limit--) { + cmd = ioread16(ioaddr + MCR1); + if (cmd & 0x1) + break; } - spin_unlock_irqrestore(&lp->lock, flags); - return IRQ_RETVAL(handled); -#else - /* TX interrupt request */ - if (status & 0x10) { - handled = 1; - descptr = lp->tx_remove_ptr; - while (lp->tx_free_desc < TX_DCNT) { - if (descptr->status & 0x8000) - break; /* Not complte */ - skb_ptr = descptr->skb_ptr; - pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE); - dev_kfree_skb_irq(skb_ptr); /* Free buffer */ - descptr->skb_ptr = 0; - descptr = descptr->vndescp; /* To next descriptor */ - lp->tx_free_desc++; + /* Restore MAC Address to MIDx */ + adrp = (u16 *) dev->dev_addr; + iowrite16(adrp[0], ioaddr + MID_0L); + iowrite16(adrp[1], ioaddr + MID_0M); + iowrite16(adrp[2], ioaddr + MID_0H); + free_irq(dev->irq, dev); + /* Free RX buffer */ + for (i = 0; i < RX_DCNT; i++) { + if (lp->rx_insert_ptr->skb_ptr) { + pci_unmap_single(lp->pdev, lp->rx_insert_ptr->buf, + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); + dev_kfree_skb(lp->rx_insert_ptr->skb_ptr); + lp->rx_insert_ptr->skb_ptr = NULL; } - lp->tx_remove_ptr = descptr; - if (lp->tx_free_desc) - netif_wake_queue(dev); - } + lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp; + } - /* RX interrupt request */ - if (status & 0x01) { - handled = 1; - descptr = lp->rx_remove_ptr; - while(lp->rx_free_desc) { - if (descptr->status & 0x8000) break; /* No Rx packet */ - skb_ptr = descptr->skb_ptr; - descptr->skb_ptr = 0; - skb_ptr->dev = dev; - skb_put(skb_ptr, descptr->len - 4); - pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); - skb_ptr->protocol = eth_type_trans(skb_ptr, dev); - netif_rx(skb_ptr); /* Send to upper layer */ - lp->stats.rx_packets++; - lp->stats.rx_bytes += descptr->len; - descptr = descptr->vndescp; /* To next descriptor */ - lp->rx_free_desc--; + /* Free TX buffer */ + for (i = 0; i < TX_DCNT; i++) { + if (lp->tx_insert_ptr->skb_ptr) { + pci_unmap_single(lp->pdev, lp->tx_insert_ptr->buf, + MAX_BUF_SIZE, PCI_DMA_TODEVICE); + dev_kfree_skb(lp->tx_insert_ptr->skb_ptr); + lp->rx_insert_ptr->skb_ptr = NULL; } - lp->rx_remove_ptr = descptr; + lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp; } - /* Allocate new RX buffer */ - if (lp->rx_free_desc < RX_DCNT) rx_buf_alloc(lp,dev); - - outw(R6040_INT_MASK, ioaddr + 0x40); /* TX/RX interrupt enable */ - spin_unlock_irqrestore(&lp->lock, flags); -#endif - return IRQ_RETVAL(handled); + /* Free Descriptor memory */ + pci_free_consistent(pdev, RX_DESC_SIZE, lp->rx_ring, lp->rx_ring_dma); + pci_free_consistent(pdev, TX_DESC_SIZE, lp->tx_ring, lp->tx_ring_dma); } - -static struct net_device_stats * -r6040_get_stats(struct net_device *dev) +static int r6040_close(struct net_device *dev) { - struct r6040_private *lp = dev->priv; - - RDC_DBUG("r6040_get_stats()", 0); - return &lp->stats; -} + struct r6040_private *lp = netdev_priv(dev); -/* - * Set or clear the multicast filter for this adaptor. - */ -static void -set_multicast_list(struct net_device *dev) -{ - struct r6040_private *lp = dev->priv; - struct dev_mc_list *mcptr; - int ioaddr = dev->base_addr; - u16 *adrp, i; - unsigned long flags; + /* deleted timer */ + del_timer_sync(&lp->timer); - RDC_DBUG("set_multicast_list()", 0); + spin_lock_irq(&lp->lock); + netif_stop_queue(dev); + r6040_down(dev); + spin_unlock_irq(&lp->lock); - /* MAC Address */ - adrp = (u16 *) dev->dev_addr; - outw(adrp[0], ioaddr + 0x68); - outw(adrp[1], ioaddr + 0x6A); - outw(adrp[2], ioaddr + 0x6C); + return 0; +} +/* Status of PHY CHIP */ +static int phy_mode_chk(struct net_device *dev) +{ + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + int phy_dat; -#if RDC_DEBUG - printk("MAC ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]); -#endif + /* PHY Link Status Check */ + phy_dat = phy_read(ioaddr, lp->phy_addr, 1); + if (!(phy_dat & 0x4)) + phy_dat = 0x8000; /* Link Failed, full duplex */ - /* Promiscous Mode */ - spin_lock_irqsave(&lp->lock, flags); - i = inw(ioaddr) & ~0x0120; /* Clear AMCP & PROM */ - if (dev->flags & IFF_PROMISC) { - i |= 0x0020; - lp->mcr0 |= 0x0020; + /* PHY Chip Auto-Negotiation Status */ + phy_dat = phy_read(ioaddr, lp->phy_addr, 1); + if (phy_dat & 0x0020) { + /* Auto Negotiation Mode */ + phy_dat = phy_read(ioaddr, lp->phy_addr, 5); + phy_dat &= phy_read(ioaddr, lp->phy_addr, 4); + if (phy_dat & 0x140) + /* Force full duplex */ + phy_dat = 0x8000; + else + phy_dat = 0; + } else { + /* Force Mode */ + phy_dat = phy_read(ioaddr, lp->phy_addr, 0); + if (phy_dat & 0x100) + phy_dat = 0x8000; + else + phy_dat = 0x0000; } - if (dev->mc_count > 4) - i |= 0x0020; /* Too many multicast address */ - - outw(i, ioaddr); - spin_unlock_irqrestore(&lp->lock, flags); - - /* Multicast Address */ - if (dev->mc_count > 4) /* Wait to do: Hash Table for multicast */ - return; - /* Multicast Address 1~4 case */ - for (i = 0, mcptr = dev->mc_list; (i < dev->mc_count) && (i < 4); i++) { - adrp = (u16 *)mcptr->dmi_addr; - outw(adrp[0], ioaddr + 0x70 + 8*i); - outw(adrp[1], ioaddr + 0x72 + 8*i); - outw(adrp[2], ioaddr + 0x74 + 8*i); - mcptr = mcptr->next; -#if RDC_DEBUG - printk("M_ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]); -#endif - } - for (i = dev->mc_count; i < 4; i++) { - outw(0xffff, ioaddr + 0x68 + 8*i); - outw(0xffff, ioaddr + 0x6A + 8*i); - outw(0xffff, ioaddr + 0x6C + 8*i); - } -} + return phy_dat; +}; -static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) +static void r6040_set_carrier(struct mii_if_info *mii) { - struct r6040_private *rp = dev->priv; - - strcpy (info->driver, DRV_NAME); - strcpy (info->version, DRV_VERSION); - strcpy (info->bus_info, pci_name(rp->pdev)); + 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 struct ethtool_ops netdev_ethtool_ops = { - .get_drvinfo = netdev_get_drvinfo, -}; - -static int -r6040_close(struct net_device *dev) +static int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { - struct r6040_private *lp = dev->priv; - - RDC_DBUG("r6040_close()", 0); - - /* deleted timer */ - del_timer_sync(&lp->timer); + 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); - - netif_stop_queue(dev); - - r6040_down(dev); - + rc = generic_mii_ioctl(&lp->mii_if, data, cmd, NULL); spin_unlock_irq(&lp->lock); - - return 0; + r6040_set_carrier(&lp->mii_if); + return rc; } -static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd) +static int r6040_rx(struct net_device *dev, int limit) { - struct r6040_private *lp = dev->priv; + 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) priv->stats.rx_errors++; + /* RX FIFO over-run */ + if (err & 0x8000) priv->stats.rx_fifo_errors++; + /* RX descriptor unavailable */ + if (err & 0x0080) priv->stats.rx_frame_errors++; + /* Received packet with length over buffer lenght */ + if (err & 0x0020) priv->stats.rx_over_errors++; + /* Received packet with too long or short */ + if (err & (0x0010|0x0008)) priv->stats.rx_length_errors++; + /* Received packet with CRC errors */ + if (err & 0x0004) { + spin_lock(&priv->lock); + priv->stats.rx_crc_errors++; + spin_unlock(&priv->lock); + } - RDC_DBUG("netdev_ioctl()", 0); + 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, 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; + priv->dev->stats.rx_packets++; + priv->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); - if (lp->switch_sig == ICPLUS_PHY_ID && cmd == SIOCDEVPRIVATE) { - unsigned long *data = (unsigned long *)rq->ifr_data, args[4]; - int ioaddr = dev->base_addr; - unsigned int val; + return count; +} - data = (unsigned long *)rq->ifr_data; - if (copy_from_user(args, data, 4*sizeof(unsigned long))) - return -EFAULT; +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) priv->stats.rx_fifo_errors++; + if (err & (0x2000 | 0x4000)) priv->stats.tx_carrier_errors++; + + if (descptr->status & 0x8000) + break; /* Not complte */ + skb_ptr = descptr->skb_ptr; + pci_unmap_single(priv->pdev, 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; - /* port priority */ - if(args[0]&(1<<31))phy_write(ioaddr, 29, 19, (phy_read(ioaddr, 29, 19) | 0x2000)); /* port 0 */ - if(args[0]&(1<<29))phy_write(ioaddr, 29, 19, (phy_read(ioaddr, 29, 19) | 0x0020)); /* port 1 */ - if(args[0]&(1<<27))phy_write(ioaddr, 29, 20, (phy_read(ioaddr, 29, 20) | 0x2000)); /* port 2 */ - if(args[0]&(1<<25))phy_write(ioaddr, 29, 20, (phy_read(ioaddr, 29, 20) | 0x0020)); /* port 3 */ + 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 -EOPNOTSUPP; + return work_done; } -/** - Stop RDC MAC and Free the allocated resource - */ -static void r6040_down(struct net_device *dev) +/* The RDC interrupt handler. */ +static irqreturn_t r6040_interrupt(int irq, void *dev_id) { - struct r6040_private *lp = dev->priv; - int i; - int ioaddr = dev->base_addr; + struct net_device *dev = dev_id; + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + u16 status; + int handled = 1; - RDC_DBUG("r6040_down()", 0); + /* Mask off RDC MAC interrupt */ + iowrite16(MSK_INT, ioaddr + MIER); + /* Read MISR status and clear */ + status = ioread16(ioaddr + MISR); - /* Stop MAC */ - outw(0x0000, ioaddr + 0x40); /* Mask Off Interrupt */ - outw(0x0001, ioaddr + 0x04); /* Reset RDC MAC */ - i = 0; - do{}while((i++ < 2048) && (inw(ioaddr + 0x04) & 0x1)); - - free_irq(dev->irq, dev); + if (status == 0x0000 || status == 0xffff) + return IRQ_NONE; - /* Free RX buffer */ - for (i = 0; i < RX_DCNT; i++) { - if (lp->rx_insert_ptr->skb_ptr) { - pci_unmap_single(lp->pdev, lp->rx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); - dev_kfree_skb(lp->rx_insert_ptr->skb_ptr); - lp->rx_insert_ptr->skb_ptr = 0; - } - lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp; + /* RX interrupt request */ + if (status & 0x01) { + netif_rx_schedule(dev, &lp->napi); + iowrite16(TX_INT, ioaddr + MIER); } - /* Free TX buffer */ - for (i = 0; i < TX_DCNT; i++) { - if (lp->tx_insert_ptr->skb_ptr) { - pci_unmap_single(lp->pdev, lp->tx_insert_ptr->buf, MAX_BUF_SIZE, PCI_DMA_TODEVICE); - dev_kfree_skb(lp->tx_insert_ptr->skb_ptr); - lp->rx_insert_ptr->skb_ptr = 0; - } - lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp; - } + /* TX interrupt request */ + if (status & 0x10) + r6040_tx(dev); - /* Free Descriptor memory */ - pci_free_consistent(lp->pdev, ALLOC_DESC_SIZE, lp->desc_pool, lp->desc_dma); + return IRQ_RETVAL(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 - -#ifdef CONFIG_R6040_NAPI -static int r6040_poll(struct net_device *dev, int *budget) +static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring, + dma_addr_t desc_dma, int size) { - struct r6040_private *lp; - struct r6040_descriptor *descptr; - struct sk_buff *skb_ptr; - int ioaddr, status; - unsigned long flags; - - - ioaddr = dev->base_addr; - lp = (struct r6040_private *)dev->priv; - unsigned long rx_work = dev->quota; - unsigned long rx; -#if 1 - /* TX interrupt request */ - if (NAPI_status & 0x10) { - descptr = lp->tx_remove_ptr; - while (lp->tx_free_desc < TX_DCNT) { - if (descptr->status & 0x8000) - break; /* Not complte */ - - skb_ptr = descptr->skb_ptr; - pci_unmap_single(lp->pdev, descptr->buf, skb_ptr->len, PCI_DMA_TODEVICE); - dev_kfree_skb_irq(skb_ptr); /* Free buffer */ - descptr->skb_ptr = 0; - descptr = descptr->vndescp; /* To next descriptor */ - lp->tx_free_desc++; - } - lp->tx_remove_ptr = descptr; - if (lp->tx_free_desc) netif_wake_queue(dev); + struct r6040_descriptor *desc = desc_ring; + dma_addr_t mapping = desc_dma; + + while (size-- > 0) { + mapping += sizeof(sizeof(*desc)); + desc->ndesc = cpu_to_le32(mapping); + desc->vndescp = desc + 1; + desc++; } -#endif -#if 1 - /* RX interrupt request */ - if (NAPI_status & 0x01) { - descptr = lp->rx_remove_ptr; - while (lp->rx_free_desc) { - if (descptr->status & 0x8000) - break; /* No Rx packet */ - skb_ptr = descptr->skb_ptr; - descptr->skb_ptr = 0; - skb_ptr->dev = dev; - skb_put(skb_ptr, descptr->len - 4); - pci_unmap_single(lp->pdev, descptr->buf, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE); - skb_ptr->protocol = eth_type_trans(skb_ptr, dev); - netif_receive_skb(skb_ptr); /* Send to upper layer */ - lp->stats.rx_packets++; - lp->stats.rx_bytes += descptr->len; - descptr = descptr->vndescp; /* To next descriptor */ - lp->rx_free_desc--; - } - lp->rx_remove_ptr = descptr; - } - /* Allocate new RX buffer */ - if (lp->rx_free_desc < RX_DCNT) - rx_buf_alloc(lp, dev); - - local_irq_disable(); - netif_rx_complete(dev); - outw(R6040_INT_MASK, ioaddr + 0x40); - local_irq_enable(); - return 0; -#endif + desc--; + desc->ndesc = cpu_to_le32(desc_dma); + desc->vndescp = desc_ring; } -#endif /* Init RDC MAC */ static void r6040_up(struct net_device *dev) { - struct r6040_private *lp = dev->priv; - struct r6040_descriptor *descptr; - int i; - int ioaddr = dev->base_addr; - u32 tmp_addr; - dma_addr_t desc_dma, start_dma; - - RDC_DBUG("r6040_up()", 0); + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; - /* Initilize */ + /* Initialize */ lp->tx_free_desc = TX_DCNT; lp->rx_free_desc = 0; - /* Init descriptor */ - memset(lp->desc_pool, 0, ALLOC_DESC_SIZE); /* Let all descriptor = 0 */ - lp->tx_insert_ptr = (struct r6040_descriptor *)lp->desc_pool; - lp->tx_remove_ptr = lp->tx_insert_ptr; - lp->rx_insert_ptr = (struct r6040_descriptor *)lp->tx_insert_ptr+TX_DCNT; - lp->rx_remove_ptr = lp->rx_insert_ptr; - + lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring; + lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring; /* Init TX descriptor */ - descptr = lp->tx_insert_ptr; - desc_dma = lp->desc_dma; - start_dma = desc_dma; - for (i = 0; i < TX_DCNT; i++) { - descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor)); - descptr->vndescp = (descptr + 1); - descptr = (descptr + 1); - desc_dma += sizeof(struct r6040_descriptor); - } - (descptr - 1)->ndesc = cpu_to_le32(start_dma); - (descptr - 1)->vndescp = lp->tx_insert_ptr; + r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT); /* Init RX descriptor */ - start_dma = desc_dma; - descptr = lp->rx_insert_ptr; - for (i = 0; i < RX_DCNT; i++) { - descptr->ndesc = cpu_to_le32(desc_dma + sizeof(struct r6040_descriptor)); - descptr->vndescp = (descptr + 1); - descptr = (descptr + 1); - desc_dma += sizeof(struct r6040_descriptor); - } - (descptr - 1)->ndesc = cpu_to_le32(start_dma); - (descptr - 1)->vndescp = lp->rx_insert_ptr; + r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT); /* Allocate buffer for RX descriptor */ rx_buf_alloc(lp, dev); -#if RDC_DEBUG -descptr = lp->tx_insert_ptr; -for (i = 0; i < TX_DCNT; i++) { - printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp); - descptr = descptr->vndescp; -} -descptr = lp->rx_insert_ptr; -for (i = 0; i < RX_DCNT; i++) { - printk("%08lx:%04x %04x %08lx %08lx %08lx %08lx\n", descptr, descptr->status, descptr->len, descptr->buf, descptr->skb_ptr, descptr->ndesc, descptr->vndescp); - descptr = descptr->vndescp; -} -#endif - - /* MAC operation register */ - outw(0x01, ioaddr+0x04); /* Reset MAC */ - outw(2, ioaddr+0xAC); /* Reset internal state machine */ - outw(0, ioaddr+0xAC); - udelay(5000); + /* + * TX and RX descriptor start registers. + * Lower 16-bits to MxD_SA0. Higher 16-bits to MxD_SA1. + */ + iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0); + iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1); - /* TX and RX descriptor start Register */ - tmp_addr = cpu_to_le32(lp->tx_insert_ptr); - tmp_addr = virt_to_bus((volatile void *)tmp_addr); - outw((u16) tmp_addr, ioaddr+0x2c); - outw(tmp_addr >> 16, ioaddr+0x30); - tmp_addr = cpu_to_le32(lp->rx_insert_ptr); - tmp_addr = virt_to_bus((volatile void *)tmp_addr); - outw((u16) tmp_addr, ioaddr+0x34); - outw(tmp_addr >> 16, ioaddr+0x38); + iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0); + iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1); /* Buffer Size Register */ - outw(MAX_BUF_SIZE, ioaddr+0x18); + iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR); + /* Read the PHY ID */ + lp->switch_sig = phy_read(ioaddr, 0, 2); - if ((lp->switch_sig = phy_read(ioaddr, 0, 2)) == ICPLUS_PHY_ID) { - phy_write(ioaddr, 29,31, 0x175C); /* Enable registers */ + if (lp->switch_sig == ICPLUS_PHY_ID) { + phy_write(ioaddr, 29, 31, 0x175C); /* Enable registers */ lp->phy_mode = 0x8000; } else { /* PHY Mode Check */ @@ -865,24 +644,24 @@ for (i = 0; i < RX_DCNT; i++) { lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0; } /* MAC Bus Control Register */ - outw(MBCR_DEFAULT, ioaddr+0x8); + iowrite16(MBCR_DEFAULT, ioaddr + MBCR); /* MAC TX/RX Enable */ lp->mcr0 |= lp->phy_mode; - outw(lp->mcr0, ioaddr); + iowrite16(lp->mcr0, ioaddr); /* set interrupt waiting time and packet numbers */ - outw(0x0802, ioaddr + 0x0C); - outw(0x0802, ioaddr + 0x10); + iowrite16(0x0F06, ioaddr + MT_ICR); + iowrite16(0x0F06, ioaddr + MR_ICR); - /* upgrade performance (by RDC guys) */ - phy_write(ioaddr, 30, 17, (phy_read(ioaddr, 30, 17) | 0x4000)); //bit 14=1 - phy_write(ioaddr, 30, 17, ~((~phy_read(ioaddr, 30, 17)) | 0x2000)); //bit 13=0 + /* 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 */ - outw(R6040_INT_MASK, ioaddr + 0x40); + iowrite16(INT_MASK, ioaddr + MIER); } /* @@ -892,13 +671,12 @@ for (i = 0; i < RX_DCNT; i++) { static void r6040_timer(unsigned long data) { struct net_device *dev = (struct net_device *)data; - struct r6040_private *lp = dev->priv; - u16 ioaddr = dev->base_addr, phy_mode; - - RDC_DBUG("r6040_timer()", 0); + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + u16 phy_mode; /* Polling PHY Chip Status */ - if (PHY_MODE == 0x3100) + if (PHY_MODE == 0x3100) phy_mode = phy_mode_chk(dev); else phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0; @@ -906,142 +684,412 @@ static void r6040_timer(unsigned long data) if (phy_mode != lp->phy_mode) { lp->phy_mode = phy_mode; lp->mcr0 = (lp->mcr0 & 0x7fff) | phy_mode; - outw(lp->mcr0, ioaddr); - printk(KERN_INFO "Link Change %x \n", inw(ioaddr)); + iowrite16(lp->mcr0, ioaddr); + printk(KERN_INFO "Link Change %x \n", ioread16(ioaddr)); } - /* Debug */ -// printk("<RDC> Timer: CR0 %x CR40 %x CR3C %x\n", inw(ioaddr), inw(ioaddr+0x40), inw(ioaddr+0x3c)); - /* Timer active again */ lp->timer.expires = TIMER_WUT; add_timer(&lp->timer); } -/* Allocate skb buffer for rx descriptor */ -static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev) +/* Read/set MAC address routines */ +static void r6040_mac_address(struct net_device *dev) { - struct r6040_descriptor *descptr; - int ioaddr = dev->base_addr ; + struct r6040_private *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->base; + u16 *adrp; - RDC_DBUG("rx_buf_alloc()", 0); + /* 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); - descptr = lp->rx_insert_ptr; - while (lp->rx_free_desc < RX_DCNT) { - descptr->skb_ptr = dev_alloc_skb(MAX_BUF_SIZE); + /* 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); +} - if (!descptr->skb_ptr) - break; - descptr->buf = cpu_to_le32(pci_map_single(lp->pdev, descptr->skb_ptr->tail, MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); - descptr->status = 0x8000; - descptr = descptr->vndescp; - lp->rx_free_desc++; - outw(lp->mcr0 | 0x0002, ioaddr); /* Trigger Rx DMA */ +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; } - lp->rx_insert_ptr = descptr; + + r6040_up(dev); + + napi_enable(&lp->napi); + netif_start_queue(dev); + + if (lp->switch_sig != ICPLUS_PHY_ID) { + /* set and active a timer process */ + init_timer(&lp->timer); + lp->timer.expires = TIMER_WUT; + lp->timer.data = (unsigned long)dev; + lp->timer.function = &r6040_timer; + add_timer(&lp->timer); + } + return 0; } -/* Status of PHY CHIP */ -static int phy_mode_chk(struct net_device *dev) +static int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev) { - struct r6040_private *lp = dev->priv; - int ioaddr = dev->base_addr, phy_dat; + struct r6040_private *lp = netdev_priv(dev); + struct r6040_descriptor *descptr; + void __iomem *ioaddr = lp->base; + unsigned long flags; + int ret = NETDEV_TX_OK; - RDC_DBUG("phy_mode_chk()", 0); + /* Critical Section */ + spin_lock_irqsave(&lp->lock, flags); - /* PHY Link Status Check */ - phy_dat = phy_read(ioaddr, lp->phy_addr, 1); - if (!(phy_dat & 0x4)) - return 0x8000; /* Link Failed, full duplex */ + /* 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; + } - /* PHY Chip Auto-Negotiation Status */ - phy_dat = phy_read(ioaddr, lp->phy_addr, 1); - if (phy_dat & 0x0020) { - /* Auto Negotiation Mode */ - phy_dat = phy_read(ioaddr, lp->phy_addr, 5); - phy_dat &= phy_read(ioaddr, lp->phy_addr, 4); - if (phy_dat & 0x140) - phy_dat = 0x8000; - else - phy_dat = 0; - } else { - /* Force Mode */ - phy_dat = phy_read(ioaddr, lp->phy_addr, 0); - if (phy_dat & 0x100) phy_dat = 0x8000; - else phy_dat = 0x0000; + /* 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; - return phy_dat; -}; + iowrite16(reg, ioaddr); + spin_unlock_irqrestore(&lp->lock, flags); -/* Read a word data from PHY Chip */ -static int phy_read(int ioaddr, int phy_addr, int reg_idx) + /* 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) { - int i = 0; + struct r6040_private *rp = netdev_priv(dev); - RDC_DBUG("phy_read()", 0); - outw(0x2000 + reg_idx + (phy_addr << 8), ioaddr + 0x20); - do {} while ((i++ < 2048) && (inw(ioaddr + 0x20) & 0x2000)); + strcpy(info->driver, DRV_NAME); + strcpy(info->version, DRV_VERSION); + strcpy(info->bus_info, pci_name(rp->pdev)); +} - return inw(ioaddr + 0x24); +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; } -/* Write a word data from PHY Chip */ -static void phy_write(int ioaddr, int phy_addr, int reg_idx, int dat) +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) { - int i = 0; + struct r6040_private *rp = netdev_priv(dev); - RDC_DBUG("phy_write()", 0); - outw(dat, ioaddr + 0x28); - outw(0x4000 + reg_idx + (phy_addr << 8), ioaddr + 0x20); - do{}while( (i++ < 2048) && (inw(ioaddr + 0x20) & 0x4000) ); + return mii_link_ok(&rp->mii_if); } -enum { - RDC_6040 = 0 +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_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6040, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040}, - /*{0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},*/ - {0,} + { PCI_DEVICE(PCI_VENDOR_ID_RDC, 0x6040) }, + { 0 } }; MODULE_DEVICE_TABLE(pci, r6040_pci_tbl); static struct pci_driver r6040_driver = { - .name = "r6040", + .name = DRV_NAME, .id_table = r6040_pci_tbl, .probe = r6040_init_one, .remove = __devexit_p(r6040_remove_one), }; -static int __init r6040_init (void) +static int __init r6040_init(void) { - RDC_DBUG("r6040_init()", 0); - - printk(KERN_INFO "%s\n", version); - printed_version = 1; - - if (parent != NULL) { - struct net_device *the_parent = dev_get_by_name(parent); - - if (the_parent == NULL) { - printk (KERN_ERR DRV_NAME ": Unknown device \"%s\" specified.\n", parent); - return -EINVAL; - } - memcpy((u8 *)&adr_table[0][0], the_parent->dev_addr, 6); - memcpy((u8 *)&adr_table[1][0], the_parent->dev_addr, 6); - ++*(u8 *)&adr_table[0][5]; - } - return pci_register_driver (&r6040_driver); + return pci_register_driver(&r6040_driver); } -static void __exit r6040_cleanup (void) +static void __exit r6040_cleanup(void) { - RDC_DBUG("r6040_cleanup()", 0); - pci_unregister_driver (&r6040_driver); + pci_unregister_driver(&r6040_driver); } module_init(r6040_init); |