-/* 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
- ---------- ------------------------------------------------
- 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.
*/
-#define DRV_NAME "r6040"
-#define DRV_VERSION "0.13"
-#define DRV_RELDATE "24Aug2006"
-
-/* PHY CHIP Address */
-#define PHY1_ADDR 1 /* For MAC1 */
-#define PHY2_ADDR 2 /* For MAC2 */
-#define PHY_MODE 0x3100 /* PHY CHIP Register 0 */
-#define PHY_CAP 0x01E1 /* PHY CHIP Register 4 */
-
-/* Time in jiffies before concluding the transmitter is hung. */
-#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 */
-#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 MBCR_DEFAULT 0x012A /* MAC Bus Control Register */
-
-/* Debug enable or not */
-#define RDC_DEBUG 0
-
-#if RDC_DEBUG > 1
-#define RDC_DBUG(msg, value) printk("%s %x\n", msg, value);
-#else
-#define RDC_DBUG(msg, value)
-#endif
-
-
+#include <linux/kernel.h>
#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/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/init.h>
-#include <linux/delay.h> /* for udelay() */
+#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>
-#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>");
+#define DRV_NAME "r6040"
+#define DRV_VERSION "0.19"
+#define DRV_RELDATE "16Jun2008"
+
+/* define bits of a debug mask */
+#define DBG_PHY 0x00000001 /*!< show PHY read/write */
+#define DBG_FREE_BUFS 0x00000002 /*!< show calls to r6040_free_*bufs */
+#define DBG_RING 0x00000004 /*!< debug init./freeing of descr rings */
+#define DBG_RX_BUF 0x00000008 /*!< show alloc. of new rx buf (in IRQ context !) */
+#define DBG_TX_BUF 0x00000010 /*!< show arrival of new tx buf */
+#define DBG_TX_DONE 0x00000020 /*!< debug TX done */
+#define DBG_RX_DESCR 0x00000040 /*!< debug rx descr to be processed */
+#define DBG_RX_DATA 0x00000080 /*!< show some user data of incoming packet */
+#define DBG_EXIT 0x00000100 /*!< show exit code calls */
+#define DBG_INIT 0x00000200 /*!< show init. code calls */
+#define DBG_TX_RING_DUMP 0x00000400 /*!< dump the tx ring after creation */
+#define DBG_RX_RING_DUMP 0x00000800 /*!< dump the rx ring after creation */
+#define DBG_TX_DESCR 0x00001000 /*!< dump the setting of a descr for tx */
+#define DBG_TX_DATA 0x00002000 /*!< dump some tx data */
+#define DBG_IRQ 0x00004000 /*!< print inside the irq handler */
+#define DBG_POLL 0x00008000 /*!< dump info on poll procedure */
+#define DBG_MAC_ADDR 0x00010000 /*!< debug mac address setting */
+#define DBG_OPEN 0x00020000 /*!< debug open proc. */
+
+static int debug = 0;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "debug mask (-1 for all)");
+
+/* define which debugs are left in the code during compilation */
+#define DEBUG (-1) /* all debugs */
+
+#define dbg(l, f, ...) \
+ do { \
+ if ((DEBUG & l) && (debug & l)) { \
+ printk(KERN_INFO DRV_NAME " %s: " f, __FUNCTION__, ## __VA_ARGS__); \
+ } \
+ } while (0)
+
+#define err(f, ...) printk(KERN_WARNING DRV_NAME " %s: " f, __FUNCTION__, ## __VA_ARGS__)
+
+/* PHY CHIP Address */
+#define PHY1_ADDR 1 /* For MAC1 */
+#define PHY2_ADDR 2 /* For MAC2 */
+#define PHY_MODE 0x3100 /* PHY CHIP Register 0 */
+#define PHY_CAP 0x01E1 /* PHY CHIP Register 4 */
+
+/* Time in jiffies before concluding the transmitter is hung. */
+#define TX_TIMEOUT (6000 * HZ / 1000)
+
+/* RDC MAC I/O Size */
+#define R6040_IO_SIZE 256
+
+/* MAX RDC MAC */
+#define MAX_MAC 2
+
+/* 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 RX_FINISH 0x0001 /* rx finished irq */
+#define RX_NO_DESC 0x0002 /* rx no descr. avail. irq */
+#define RX_FIFO_FULL 0x0004 /* rx fifo full irq */
+#define RX_EARLY 0x0008 /* rx early irq */
+#define TX_FINISH 0x0010 /* tx finished irq */
+#define TX_EARLY 0x0080 /* tx early irq */
+#define EVENT_OVRFL 0x0100 /* event counter overflow irq */
+#define LINK_CHANGED 0x0200 /* PHY link changed irq */
+
+#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 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:
+ - wait 1 host clock until SDRAM bus request
+ becomes high priority
+ - RX FIFO: 32 byte
+ - TX FIFO: 64 byte
+ - FIFO transfer length: 16 byte */
+#define MCAST_MAX 4 /* Max number multicast addresses to filter */
+
+/* PHY settings */
+#define ICPLUS_PHY_ID 0x0243
+
+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
+/*! which rx interrupts do we allow */
+#define RX_INTS (RX_FIFO_FULL|RX_NO_DESC|RX_FINISH)
+/*! which tx interrupts do we allow */
+#define TX_INTS (TX_FINISH)
+#define INT_MASK (RX_INTS | TX_INTS)
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 */
struct sk_buff *skb_ptr; /* 18-1B */
u32 rev2; /* 1C-1F */
-} __attribute__(( aligned(32) ));
+} __attribute__((aligned(32)));
+
+/*! defines for the status field in the r6040_descriptor */
+#define DESC_STATUS_OWNER_MAC (1<<15) /*!< if set the MAC is the owner of this descriptor */
+#define DESC_STATUS_RX_OK (1<<14) /*!< rx was successful */
+#define DESC_STATUS_RX_ERR (1<<11) /*!< rx PHY error */
+#define DESC_STATUS_RX_ERR_DRIBBLE (1<<10) /*!< rx dribble packet */
+#define DESC_STATUS_RX_ERR_BUFLEN (1<< 9) /*!< rx length exceeded buffer size */
+#define DESC_STATUS_RX_ERR_LONG (1<< 8) /*!< rx length > maximum packet length */
+#define DESC_STATUS_RX_ERR_RUNT (1<< 7) /*!< rx: packet length < 64 byte */
+#define DESC_STATUS_RX_ERR_CRC (1<< 6) /*!< rx: crc error */
+#define DESC_STATUS_RX_BROADCAST (1<< 5) /*!< rx: broadcast (no error) */
+#define DESC_STATUS_RX_MULTICAST (1<< 4) /*!< rx: multicast (no error) */
+#define DESC_STATUS_RX_MCH_HIT (1<< 3) /*!< rx: multicast hit in hash table (no error) */
+#define DESC_STATUS_RX_MIDH_HIT (1<< 2) /*!< rx: MID table hit (no error) */
+#define DESC_STATUS_RX_IDX_MID_MASK 3 /*!< rx: mask for the index of matched MIDx */
struct r6040_private {
- struct net_device_stats stats;
- spinlock_t lock;
- struct timer_list timer;
+ 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;
- u16 tx_free_desc, rx_free_desc, phy_addr, phy_mode;
+ 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, 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;
+ void __iomem *base;
};
-struct r6040_chip_info {
- const char *name;
- u16 pci_flags;
- int io_size;
- int drv_flags;
-};
+struct net_device *parent_dev;
+static char *parent = "wlan0";
+module_param(parent, charp, 0444);
+MODULE_PARM_DESC(parent, "Parent network device name to get the MAC address from");
-#ifdef CONFIG_R6040_NAPI
-static int NAPI_status;
-#endif
+static char version[] __devinitdata = KERN_INFO DRV_NAME
+ ": RDC R6040 NAPI net driver,"
+ "version "DRV_VERSION " (" DRV_RELDATE ")\n";
-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 = NULL;
+static int phy_table[] = { PHY1_ADDR, PHY2_ADDR };
-#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
+/* forward declarations */
+void r6040_multicast_list(struct net_device *dev);
+/* jal2: comment out to get more symbols for debugging */
+//#define STATIC static
+#define STATIC
-static int __devinit r6040_init_one (struct pci_dev *pdev,
- const struct pci_device_id *ent)
+#if DEBUG
+/*! hexdump an memory area into a string. delim is taken as the delimiter between two bytes.
+ It is omitted if delim == '\0' */
+STATIC char *hex2str(void *addr, char *buf, int nr_bytes, int delim)
{
- 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);
+ unsigned char *src = addr;
+ char *outb = buf;
+
+#define BIN2HEXDIGIT(x) ((x) < 10 ? '0'+(x) : 'A'-10+(x))
+
+ while (nr_bytes > 0) {
+ *outb++ = BIN2HEXDIGIT(*src>>4);
+ *outb++ = BIN2HEXDIGIT(*src&0xf);
+ if (delim)
+ *outb++ = delim;
+ nr_bytes--;
+ src++;
+ }
- if (printed_version++)
- printk(version);
+ if (delim)
+ outb--;
+ *outb = '\0';
+ return buf;
+}
- if ((err = pci_enable_device (pdev)))
- return err;
+#endif /* #if DEBUG */
- /* 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;
+/* Read a word data from PHY Chip */
+STATIC int phy_read(void __iomem *ioaddr, int phy_addr, int reg)
+{
+ int limit = 2048;
+ u16 cmd;
+ int rc;
+
+ 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;
}
- /* IO Size check */
- io_size = r6040_chip_info[chip_id].io_size;
- if (pci_resource_len (pdev, 0) < io_size) {
- return -ENODEV;
- }
+ if (limit <= 0)
+ err("phy addr x%x reg x%x timed out\n",
+ phy_addr, reg);
- ioaddr = pci_resource_start (pdev, 0); /* IO map base address */
- pci_set_master(pdev);
+ rc=ioread16(ioaddr + MMRD);
- dev = alloc_etherdev(sizeof(struct r6040_private));
- if (dev == NULL)
- return -ENOMEM;
- SET_MODULE_OWNER(dev);
+ dbg(DBG_PHY, "phy addr x%x reg x%x val x%x\n", phy_addr, reg, rc);
+ return rc;
+}
- if (pci_request_regions(pdev, DRV_NAME)) {
- printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
- err = -ENODEV;
- goto err_out_disable;
+/* Write a word data from PHY Chip */
+STATIC void phy_write(void __iomem *ioaddr, int phy_addr, int reg, u16 val)
+{
+ int limit = 2048;
+ u16 cmd;
+
+ dbg(DBG_PHY, "phy addr x%x reg x%x val x%x\n", phy_addr, reg, val);
+
+ 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;
}
+ if (limit <= 0)
+ err("phy addr x%x reg x%x val x%x timed out\n",
+ phy_addr, reg, val);
+}
- /* Init system & device */
- lp = dev->priv;
- dev->base_addr = ioaddr;
- dev->irq = pdev->irq;
-
- spin_lock_init(&lp->lock);
- pci_set_drvdata(pdev, dev);
+STATIC int mdio_read(struct net_device *dev, int mii_id, int reg)
+{
+ struct r6040_private *lp = netdev_priv(dev);
+ void __iomem *ioaddr = lp->base;
- /* Set MAC address */
- card_idx++;
- memcpy(dev->dev_addr, (u8 *)&adr_table[card_idx][0], 6);
+ return (phy_read(ioaddr, lp->phy_addr, reg));
+}
- /* Link new device into r6040_root_dev */
- lp->pdev = pdev;
+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;
- /* Init RDC private data */
- lp->mcr0 = 0x1002;
- lp->phy_addr = phy_table[card_idx];
- lp->switch_sig = 0;
+ phy_write(ioaddr, lp->phy_addr, reg, val);
+}
- /* 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
+void r6040_free_txbufs(struct net_device *dev)
+{
+ struct r6040_private *lp = netdev_priv(dev);
+ int i;
- /* Register net device. After this dev->name assign */
- if ((err = register_netdev(dev))) {
- printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
- goto err_out_res;
+ dbg(DBG_FREE_BUFS, "ENTER\n");
+ for (i = 0; i < TX_DCNT; i++) {
+ if (lp->tx_insert_ptr->skb_ptr) {
+ pci_unmap_single(lp->pdev,
+ le32_to_cpu(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->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
}
+ dbg(DBG_FREE_BUFS, "EXIT\n");
+}
- netif_carrier_on(dev);
- return 0;
+/*! unmap and free all rx skb */
+void r6040_free_rxbufs(struct net_device *dev)
+{
+ struct r6040_private *lp = netdev_priv(dev);
+ int i;
-err_out_res:
- pci_release_regions(pdev);
-err_out_disable:
- pci_disable_device(pdev);
- pci_set_drvdata(pdev, NULL);
- kfree(dev);
+ dbg(DBG_FREE_BUFS, "ENTER\n");
+ for (i = 0; i < RX_DCNT; i++) {
+ if (lp->rx_insert_ptr->skb_ptr) {
+ pci_unmap_single(lp->pdev,
+ le32_to_cpu(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->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
+ }
+ dbg(DBG_FREE_BUFS, "EXIT\n");
- return err;
}
-static void __devexit r6040_remove_one (struct pci_dev *pdev)
+void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
+ dma_addr_t desc_dma, int size)
{
- struct net_device *dev = pci_get_drvdata(pdev);
+ struct r6040_descriptor *desc = desc_ring;
+ dma_addr_t mapping = desc_dma;
+
+ dbg(DBG_RING, "desc_ring %p desc_dma %08x size x%x\n",
+ desc_ring, desc_dma, size);
+
- unregister_netdev(dev);
- pci_release_regions(pdev);
- kfree(dev);
- pci_disable_device(pdev);
- pci_set_drvdata(pdev, NULL);
+ while (size-- > 0) {
+ mapping += sizeof(*desc);
+ memset(desc, 0, sizeof(*desc));
+ desc->ndesc = cpu_to_le32(mapping);
+ desc->vndescp = desc + 1;
+ desc++;
+ }
+
+ /* last descriptor points to first one to close the descriptor ring */
+ desc--;
+ desc->ndesc = cpu_to_le32(desc_dma);
+ desc->vndescp = desc_ring;
}
-static int
-r6040_open(struct net_device *dev)
+#if (DEBUG & DBG_TX_RING_DUMP)
+/*! dump the tx ring to syslog */
+STATIC void
+dump_tx_ring(struct r6040_private *lp)
{
- struct r6040_private *lp = dev->priv;
int i;
+ struct r6040_descriptor *ptr;
+
+ printk(KERN_INFO "%s: nr_desc x%x tx_ring %p tx_ring_dma %08x "
+ "tx_insert %p tx_remove %p\n",
+ DRV_NAME, TX_DCNT, lp->tx_ring, lp->tx_ring_dma,
+ lp->tx_insert_ptr, lp->tx_remove_ptr);
+
+ if (lp->tx_ring) {
+ for(i=0, ptr=lp->tx_ring; i < TX_DCNT; i++, ptr++) {
+ printk(KERN_INFO "%s: %d. descr: status x%x len x%x "
+ "ndesc %08x vbufp %p vndescp %p skb_ptr %p\n",
+ DRV_NAME, i, ptr->status, ptr->len,
+ ptr->ndesc, ptr->vbufp, ptr->vndescp, ptr->skb_ptr);
+ }
+ }
+}
+#endif /* #if (DEBUG & DBG_TX_RING_DUMP) */
- 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;
-
- /* Allocate Descriptor memory */
- lp->desc_pool = pci_alloc_consistent(lp->pdev, ALLOC_DESC_SIZE, &lp->desc_dma);
- if (!lp->desc_pool) return -ENOMEM;
+void r6040_init_txbufs(struct net_device *dev)
+{
+ struct r6040_private *lp = netdev_priv(dev);
- r6040_up(dev);
+ lp->tx_free_desc = TX_DCNT;
- netif_start_queue(dev);
+ lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring;
+ r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT);
- if (lp->switch_sig != 0x0243)
- {
- /* 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);
+#if (DEBUG & DBG_TX_RING_DUMP)
+ if (debug & DBG_TX_RING_DUMP) {
+ dump_tx_ring(lp);
}
- return 0;
+#endif
}
-static void
-r6040_tx_timeout (struct net_device *dev)
+#if (DEBUG & DBG_RX_RING_DUMP)
+/*! dump the rx ring to syslog */
+STATIC void
+dump_rx_ring(struct r6040_private *lp)
{
- struct r6040_private *lp = dev->priv;
- //int ioaddr = dev->base_addr;
- //struct r6040_descriptor *descptr = lp->tx_remove_ptr;
-
- RDC_DBUG("r6040_tx_timeout()", 0);
+ int i;
+ struct r6040_descriptor *ptr;
+
+ printk(KERN_INFO "%s: nr_desc x%x rx_ring %p rx_ring_dma %08x "
+ "rx_insert %p rx_remove %p\n",
+ DRV_NAME, RX_DCNT, lp->rx_ring, lp->rx_ring_dma,
+ lp->rx_insert_ptr, lp->rx_remove_ptr);
+
+ if (lp->rx_ring) {
+ for(i=0, ptr=lp->rx_ring; i < RX_DCNT; i++, ptr++) {
+ printk(KERN_INFO "%s: %d. descr: status x%x len x%x "
+ "ndesc %08x vbufp %p vndescp %p skb_ptr %p\n",
+ DRV_NAME, i, ptr->status, ptr->len,
+ ptr->ndesc, ptr->vbufp, ptr->vndescp, ptr->skb_ptr);
+ }
+ }
+}
+#endif /* #if (DEBUG & DBG_TX_RING_DUMP) */
- /* 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);
+int r6040_alloc_rxbufs(struct net_device *dev)
+{
+ struct r6040_private *lp = netdev_priv(dev);
+ struct r6040_descriptor *desc;
+ struct sk_buff *skb;
+ int rc;
+
+ lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring;
+ r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT);
+
+ /* alloc skbs for the rx descriptors */
+ desc = lp->rx_ring;
+ do {
+ if (!(skb=netdev_alloc_skb(dev, MAX_BUF_SIZE))) {
+ err("failed to alloc skb for rx\n");
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+ desc->skb_ptr = skb;
+ desc->buf = cpu_to_le32(pci_map_single(lp->pdev,
+ desc->skb_ptr->data,
+ MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
+ desc->status = DESC_STATUS_OWNER_MAC;
+ desc = desc->vndescp;
+ } while (desc != lp->rx_ring);
+
+#if (DEBUG & DBG_RX_RING_DUMP)
+ if (debug & DBG_RX_RING_DUMP) {
+ dump_rx_ring(lp);
+ }
+#endif
-//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));
+ return 0;
-//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);
+err_exit:
+ /* dealloc all previously allocated skb */
+ r6040_free_rxbufs(dev);
+ return rc;
}
-
-static int
-r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
+/*! reset MAC and set all registers */
+void r6040_init_mac_regs(struct r6040_private *lp)
{
- struct r6040_private *lp = dev->priv;
- struct r6040_descriptor *descptr;
- int ioaddr = dev->base_addr;
- unsigned long flags;
-
- RDC_DBUG("r6040_start_xmit()", 0);
+ void __iomem *ioaddr = lp->base;
+ int limit;
+ char obuf[3*ETH_ALEN] __attribute__ ((unused));
+
+ /* Mask Off Interrupt */
+ iowrite16(MSK_INT, ioaddr + MIER);
+
+ /* reset MAC */
+ iowrite16(MAC_RST, ioaddr + MCR1);
+ udelay(100);
+ limit=2048;
+ while ((ioread16(ioaddr + MCR1) & MAC_RST) && limit-- > 0);
+
+ /* Reset internal state machine */
+ iowrite16(2, ioaddr + MAC_SM);
+ iowrite16(0, ioaddr + MAC_SM);
+ udelay(5000);
- 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;
- }
+ /* Restore MAC Addresses */
+ r6040_multicast_list(lp->dev);
- /* Critical Section */
- spin_lock_irqsave(&lp->lock, flags);
+ /* TODO: restore multcast and hash table */
- /* TX resource check */
- if (!lp->tx_free_desc) {
- spin_unlock_irqrestore(&lp->lock, flags);
- printk(KERN_ERR DRV_NAME ": NO TX DESC ");
- return 1;
- }
+ /* MAC Bus Control Register */
+ iowrite16(MBCR_DEFAULT, ioaddr + MBCR);
- /* 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;
+ /* Buffer Size Register */
+ iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR);
-#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
+ /* write tx ring start address */
+ iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0);
+ iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1);
- /* If no tx resource, stop */
- if (!lp->tx_free_desc)
- netif_stop_queue(dev);
+ /* write rx ring start address */
+ iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0);
+ iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
- dev->trans_start = jiffies;
- spin_unlock_irqrestore(&lp->lock, flags);
- return 0;
-}
+ /* set interrupt waiting time and packet numbers */
+ iowrite16(0, ioaddr + MT_ICR);
+ iowrite16(0, ioaddr + MR_ICR);
-/* The RDC interrupt handler. */
-static irqreturn_t
-r6040_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct r6040_private *lp;
- struct r6040_descriptor *descptr;
- struct sk_buff *skb_ptr;
- int ioaddr, status;
- 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);
- }
+ /* enable interrupts */
+ iowrite16(INT_MASK, ioaddr + MIER);
- lp = (struct r6040_private *)dev->priv;
- spin_lock_irqsave(&lp->lock, flags);
+ /* enable tx and rx */
+ iowrite16(lp->mcr0 | 0x0002, ioaddr);
- /* 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 */
-
+ /* let TX poll the descriptors - we may got called by r6040_tx_timeout which has left
+ some unsent tx buffers */
+ iowrite16(0x01, ioaddr + MTPR);
+}
-#ifdef CONFIG_R6040_NAPI
+void r6040_tx_timeout(struct net_device *dev)
+{
+ struct r6040_private *priv = netdev_priv(dev);
+ void __iomem *ioaddr = priv->base;
- if(netif_rx_schedule_prep(dev))
- {
- NAPI_status = status ;
- __netif_rx_schedule(dev);
- }
-
- 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++;
- }
- lp->tx_remove_ptr = descptr;
- if (lp->tx_free_desc) netif_wake_queue(dev);
- }
-
- /* 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--;
- }
- lp->rx_remove_ptr = descptr;
- }
+ /* we read MISR, which clears on read (i.e. we may loose an RX interupt,
+ but this is an error anyhow ... */
+ printk(KERN_WARNING "%s: transmit timed out, int enable %4.4x "
+ "status %4.4x, PHY status %4.4x\n",
+ dev->name, ioread16(ioaddr + MIER),
+ ioread16(ioaddr + MISR),
+ mdio_read(dev, priv->mii_if.phy_id, MII_BMSR));
- /* Allocate new RX buffer */
- if (lp->rx_free_desc < RX_DCNT) rx_buf_alloc(lp,dev);
+ dev->stats.tx_errors++;
- outw(R6040_INT_MASK, ioaddr + 0x40); /* TX/RX interrupt enable */
- spin_unlock_irqrestore(&lp->lock, flags);
-#endif
- return IRQ_RETVAL(handled);
+ /* Reset MAC and re-init all registers */
+ r6040_init_mac_regs(priv);
}
-
-static struct net_device_stats *
-r6040_get_stats(struct net_device *dev)
+struct net_device_stats *r6040_get_stats(struct net_device *dev)
{
- struct r6040_private *lp = dev->priv;
+ struct r6040_private *priv = netdev_priv(dev);
+ void __iomem *ioaddr = priv->base;
+ unsigned long flags;
- RDC_DBUG("r6040_get_stats()", 0);
- return &lp->stats;
+ spin_lock_irqsave(&priv->lock, flags);
+ dev->stats.rx_crc_errors += ioread8(ioaddr + ME_CNT1);
+ dev->stats.multicast += ioread8(ioaddr + ME_CNT0);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return &dev->stats;
}
-/*
- * Set or clear the multicast filter for this adaptor.
- */
-static void
-set_multicast_list(struct net_device *dev)
+/* Stop RDC MAC and Free the allocated resource */
+void r6040_down(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;
+ struct r6040_private *lp = netdev_priv(dev);
+ void __iomem *ioaddr = lp->base;
+ struct pci_dev *pdev = lp->pdev;
+ int limit = 2048;
- RDC_DBUG("set_multicast_list()", 0);
+ dbg(DBG_EXIT, "ENTER\n");
- /* MAC Address */
- adrp = (u16 *) dev->dev_addr;
- outw(adrp[0], ioaddr + 0x68);
- outw(adrp[1], ioaddr + 0x6A);
- outw(adrp[2], ioaddr + 0x6C);
+ /* Stop MAC */
+ iowrite16(MSK_INT, ioaddr + MIER); /* Mask Off Interrupt */
+ iowrite16(MAC_RST, ioaddr + MCR1); /* Reset RDC MAC */
+ udelay(100);
+ while ((ioread16(ioaddr+MCR1) & 1) && limit-- > 0);
+ if (limit <= 0)
+ err("timeout while waiting for reset done.\n");
-#if RDC_DEBUG
- printk("MAC ADDR: %04x %04x %04x\n", adrp[0], adrp[1], adrp[2]);
-#endif
+ free_irq(dev->irq, dev);
- /* 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 ;
- }
- 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;
+ /* Free RX buffer */
+ r6040_free_rxbufs(dev);
- /* 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);
- }
-}
+ /* Free TX buffer */
+ r6040_free_txbufs(dev);
-static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
-{
- struct r6040_private *rp = dev->priv;
+ /* 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);
- strcpy (info->driver, DRV_NAME);
- strcpy (info->version, DRV_VERSION);
- strcpy (info->bus_info, pci_name(rp->pdev));
+ dbg(DBG_EXIT, "EXIT\n");
}
-static struct ethtool_ops netdev_ethtool_ops = {
- .get_drvinfo = netdev_get_drvinfo,
-};
-
-static int
-r6040_close(struct net_device *dev)
+int r6040_close(struct net_device *dev)
{
- struct r6040_private *lp = dev->priv;
-
- RDC_DBUG("r6040_close()", 0);
+ struct r6040_private *lp = netdev_priv(dev);
- /* deleted timer */
- del_timer_sync(&lp->timer);
+ dbg(DBG_EXIT, "ENTER\n");
+ /* deleted timer */
+ del_timer_sync(&lp->timer);
spin_lock_irq(&lp->lock);
-
+ napi_disable(&lp->napi);
netif_stop_queue(dev);
-
r6040_down(dev);
-
spin_unlock_irq(&lp->lock);
+ dbg(DBG_EXIT, "EXIT\n");
return 0;
}
-static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct r6040_private *lp = dev->priv;
-
- RDC_DBUG("netdev_ioctl()", 0);
- if (lp->switch_sig == 0x0243 && cmd == SIOCDEVPRIVATE)
- {
- unsigned long *data = (unsigned long *)rq->ifr_data, args[4];
- int ioaddr = dev->base_addr;
- unsigned int val;
-
- data = (unsigned long *)rq->ifr_data;
- if (copy_from_user(args, data, 4*sizeof(unsigned long)))
- return -EFAULT;
-
- /* 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 */
-
- }
- return -EOPNOTSUPP;
-}
-
-/**
- Stop RDC MAC and Free the allocated resource
- */
-static void r6040_down(struct net_device *dev)
+/* Status of PHY CHIP. Returns 0x8000 for full duplex, 0 for half duplex */
+STATIC int phy_mode_chk(struct net_device *dev)
{
- struct r6040_private *lp = dev->priv;
- int i;
- int ioaddr = dev->base_addr;
+ struct r6040_private *lp = netdev_priv(dev);
+ void __iomem *ioaddr = lp->base;
+ int phy_dat;
- RDC_DBUG("r6040_down()", 0);
+ /* PHY Link Status Check */
+ phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
+ if (!(phy_dat & 0x4))
+ phy_dat = 0x8000; /* Link Failed, full duplex */
- /* 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);
-
- /* 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;
+ /* 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;
}
- /* 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;
- }
+ dbg(DBG_PHY, "RETURN x%x\n", phy_dat);
+ return phy_dat;
+};
- /* Free Descriptor memory */
- pci_free_consistent(lp->pdev, ALLOC_DESC_SIZE, lp->desc_pool, lp->desc_dma);
+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);
}
+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;
+}
-#ifdef CONFIG_R6040_NAPI
-static int r6040_poll(struct net_device *dev, int *budget)
+int r6040_rx(struct net_device *dev, int limit)
{
- 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) {
+ struct r6040_private *priv = netdev_priv(dev);
+ int count=0;
+ struct r6040_descriptor *descptr = priv->rx_remove_ptr;
+ struct sk_buff *skb_ptr, *new_skb;
+ char obuf[2*32+1] __attribute__ ((unused)); /* for debugging */
+
+ while (count < limit && !(descptr->status & DESC_STATUS_OWNER_MAC)) {
+ /* limit not reached and the descriptor belongs to the CPU */
+
+ dbg(DBG_RX_DESCR, "descptr %p status x%x data len x%x\n",
+ descptr, descptr->status, descptr->len);
- 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);
- }
-#endif
-#if 1
- /* RX interrupt request */
- if (NAPI_status & 0x01) {
+ /* Check for errors */
+ if (descptr->status & DESC_STATUS_RX_ERR) {
- 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--;
+ dev->stats.rx_errors++;
+
+ if (descptr->status & (DESC_STATUS_RX_ERR_DRIBBLE|
+ DESC_STATUS_RX_ERR_BUFLEN|
+ DESC_STATUS_RX_ERR_LONG|
+ DESC_STATUS_RX_ERR_RUNT)) {
+ /* packet too long or too short*/
+ dev->stats.rx_length_errors++;
+ }
+
+ if (descptr->status & DESC_STATUS_RX_ERR_CRC) {
+ dev->stats.rx_crc_errors++;
+ }
+ goto next_descr;
}
- 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
+ /* successful received packet */
+
+ /* first try to allocate new skb. If this fails
+ we drop the packet and leave the old skb there.*/
+ new_skb = netdev_alloc_skb(dev, MAX_BUF_SIZE);
+ if (!new_skb) {
+ dev->stats.rx_dropped++;
+ goto next_descr;
+ }
+ skb_ptr = descptr->skb_ptr;
+ 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);
+
+ dbg(DBG_RX_DATA, "rx len x%x: %s...\n",
+ descptr->len,
+ hex2str(skb_ptr->data, obuf, sizeof(obuf)/2, '\0'));
+
+ /* Send to upper layer */
+ netif_receive_skb(skb_ptr);
+ dev->last_rx = jiffies;
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += (descptr->len-4);
+
+ /* put new skb into descriptor */
+ descptr->skb_ptr = new_skb;
+ descptr->buf = cpu_to_le32(pci_map_single(priv->pdev,
+ descptr->skb_ptr->data,
+ MAX_BUF_SIZE, PCI_DMA_FROMDEVICE));
+
+next_descr:
+ /* put the descriptor back to the MAC */
+ descptr->status = DESC_STATUS_OWNER_MAC;
+ descptr = descptr->vndescp;
+ count++; /* shall we count errors and dropped packets as well? */
+ } /* while (limit && !(descptr->status & DESC_STATUS_OWNER_MAC)) */
+
+ /* remember next descriptor to check for rx */
+ priv->rx_remove_ptr = descptr;
+
+ return count;
}
-#endif
-/* Init RDC MAC */
-static void r6040_up(struct net_device *dev)
+void r6040_tx(struct net_device *dev)
{
- struct r6040_private *lp = dev->priv;
+ struct r6040_private *priv = netdev_priv(dev);
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);
+ 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++;
+
+ dbg(DBG_TX_DONE, "descptr %p status x%x err x%x jiffies %lu\n",
+ descptr, descptr->status, err, jiffies);
+
+ 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;
- /* Initilize */
- 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;
-
- /* 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);
+ if (priv->tx_free_desc)
+ netif_wake_queue(dev);
+ spin_unlock(&priv->lock);
+}
+
+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);
+
+ dbg(DBG_POLL, "budget x%x done x%x\n", budget, work_done);
+
+ if (work_done < budget) {
+ netif_rx_complete(dev, napi);
+ /* Enable RX interrupt */
+ iowrite16(ioread16(ioaddr + MIER) | RX_INTS, ioaddr + MIER);
}
- (descptr - 1)->ndesc = cpu_to_le32(start_dma);
- (descptr - 1)->vndescp = lp->tx_insert_ptr;
+ return work_done;
+}
- /* 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);
+/* The RDC interrupt handler. */
+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;
+
+ /* Read MISR status and clear */
+ status = ioread16(ioaddr + MISR);
+
+ dbg(DBG_IRQ, "status x%x jiffies %lu\n", status, jiffies);
+
+ if (status == 0x0000 || status == 0xffff)
+ return IRQ_NONE;
+
+ /* rx early / rx finish interrupt
+ or rx descriptor unavail. */
+ if (status & RX_INTS) {
+ if (status & RX_NO_DESC) {
+ /* rx descriptor unavail. */
+ dev->stats.rx_dropped++;
+ dev->stats.rx_missed_errors++;
+ }
+ /* Mask off RX interrupts */
+ iowrite16(ioread16(ioaddr + MIER) & ~RX_INTS, ioaddr + MIER);
+ netif_rx_schedule(dev, &lp->napi);
}
- (descptr - 1)->ndesc = cpu_to_le32(start_dma);
- (descptr - 1)->vndescp = lp->rx_insert_ptr;
- /* Allocate buffer for RX descriptor */
- rx_buf_alloc(lp,dev);
+ /* rx FIFO full */
+ if (status & RX_FIFO_FULL) {
+ dev->stats.rx_fifo_errors++;
+ }
+
+ /* TX interrupt request */
+ if (status & 0x10)
+ r6040_tx(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;
+ return IRQ_HANDLED;
}
-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;
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+void r6040_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ r6040_interrupt(dev->irq, dev);
+ enable_irq(dev->irq);
}
#endif
- /* MAC operation register */
- outw(0x01, ioaddr+0x04); /* Reset MAC */
- outw(2 , ioaddr+0xAC); /* Reset internal state machine */
- outw(0 , ioaddr+0xAC);
- udelay(5000);
+/* Init RDC MAC */
+int r6040_up(struct net_device *dev)
+{
+ struct r6040_private *lp = netdev_priv(dev);
+ void __iomem *ioaddr = lp->base;
+ int rc;
- /* 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);
+ dbg(DBG_INIT, "ENTER\n");
- /* Buffer Size Register */
- outw(MAX_BUF_SIZE, ioaddr+0x18);
+ /* Initialise and alloc RX/TX buffers */
+ r6040_init_txbufs(dev);
+ if ((rc=r6040_alloc_rxbufs(dev)))
+ return rc;
- if ((lp->switch_sig = phy_read(ioaddr, 0, 2)) == 0x0243) // ICPlus IP175C Signature
- {
- phy_write(ioaddr, 29,31, 0x175C); //Enable registers
+ /* 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 */
else
lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
}
- /* MAC Bus Control Register */
- outw(MBCR_DEFAULT, ioaddr+0x8);
-
- /* MAC TX/RX Enable */
+
+/* configure duplex mode */
lp->mcr0 |= lp->phy_mode;
- outw(lp->mcr0, ioaddr);
- /* set interrupt waiting time and packet numbers */
- outw(0x0802, ioaddr + 0x0C);
- outw(0x0802, ioaddr + 0x10);
+ /* 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);
- /* 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
- phy_write(ioaddr,0,19,0x0000);
- phy_write(ioaddr,0,30,0x01F0);
+ /* Reset MAC and init all registers */
+ r6040_init_mac_regs(lp);
- /* Interrupt Mask Register */
- outw(R6040_INT_MASK, ioaddr + 0x40);
+ return 0;
}
/*
A periodic timer routine
Polling PHY Chip Link Status
*/
-static void r6040_timer(unsigned long data)
+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 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)
+ if (PHY_MODE == 0x3100)
phy_mode = phy_mode_chk(dev);
- else phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
+ 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;
- outw(lp->mcr0, ioaddr);
- printk("<RDC> Link Change %x \n", inw(ioaddr));
+ iowrite16(lp->mcr0, ioaddr);
+ printk(KERN_INFO "Link Change x%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 */
+ mod_timer(&lp->timer, jiffies + round_jiffies(HZ));
+}
+
+int r6040_open(struct net_device *dev)
+{
+ struct r6040_private *lp = netdev_priv(dev);
+ int ret;
+
+ dbg(DBG_OPEN, "ENTER\n");
+ /* Request IRQ and Register interrupt handler */
+ ret = request_irq(dev->irq, &r6040_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (ret)
+ return ret;
+
+ dbg(DBG_OPEN, "got irq %d\n", dev->irq);
- /* Timer active again */
- lp->timer.expires = TIMER_WUT;
- add_timer(&lp->timer);
+ /* Allocate Descriptor memory */
+ lp->rx_ring =
+ pci_alloc_consistent(lp->pdev, RX_DESC_SIZE, &lp->rx_ring_dma);
+ if (!lp->rx_ring)
+ return -ENOMEM;
+
+ dbg(DBG_OPEN, "allocated rx ring\n");
+
+ 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;
+ }
+
+ dbg(DBG_OPEN, "allocated tx ring\n");
+
+ if ((ret=r6040_up(dev))) {
+ pci_free_consistent(lp->pdev, TX_DESC_SIZE, lp->tx_ring,
+ lp->tx_ring_dma);
+ pci_free_consistent(lp->pdev, RX_DESC_SIZE, lp->rx_ring,
+ lp->rx_ring_dma);
+ return ret;
+ }
+
+ 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;
}
-/* Allocate skb buffer for rx descriptor */
-static void rx_buf_alloc(struct r6040_private *lp,struct net_device *dev)
+int r6040_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
+ struct r6040_private *lp = netdev_priv(dev);
struct r6040_descriptor *descptr;
- int ioaddr = dev->base_addr ;
-
- RDC_DBUG("rx_buf_alloc()", 0);
- descptr = lp->rx_insert_ptr;
- while(lp->rx_free_desc < RX_DCNT){
- descptr->skb_ptr = dev_alloc_skb(MAX_BUF_SIZE);
- 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
+ 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;
}
- lp->rx_insert_ptr = descptr;
+
+ /* 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));
+
+ dbg(DBG_TX_DESCR, "desc @ %p: len x%x buf %08x skb->data %p skb->len x%x jiffies %lu\n",
+ descptr, descptr->len, descptr->buf, skb->data, skb->len, jiffies);
+
+ {
+ char obuf[2*32+1];
+ dbg(DBG_TX_DATA, "tx len x%x: %s\n",
+ descptr->len, hex2str(skb->data, obuf, sizeof(obuf)/2, '\0'));
+ }
+
+ 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;
}
-/* Status of PHY CHIP */
-static int phy_mode_chk(struct net_device *dev)
+/*! set MAC addresses and promiscous mode */
+void r6040_multicast_list(struct net_device *dev)
{
- struct r6040_private *lp = dev->priv;
- int ioaddr = dev->base_addr, phy_dat;
+ 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;
+ char obuf[3*ETH_ALEN] __attribute__ ((unused));
- RDC_DBUG("phy_mode_chk()", 0);
+ /* 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);
- /* PHY Link Status Check */
- phy_dat = phy_read(ioaddr, lp->phy_addr, 1);
- if (!(phy_dat & 0x4)) return 0x8000; /* Link Failed, full duplex */
+ dbg(DBG_MAC_ADDR, "%s: set MAC addr %s\n",
+ dev->name, hex2str(dev->dev_addr, obuf, ETH_ALEN, ':'));
- /* 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;
+ /* 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)
{
- int i = 0;
+ struct r6040_private *rp = netdev_priv(dev);
+ int rc;
- 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) );
+ 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;
}
-enum {
- RDC_6040 = 0
+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,
};
+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;
+
+ printk(KERN_INFO "%s\n", version);
+ printk(KERN_INFO DRV_NAME ": debug %x\n", debug);
+
+ 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);
+
+ 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);
+
+ card_idx++;
+
+ /* Link new device into r6040_root_dev */
+ lp->pdev = pdev;
+
+ lp->dev = dev;
+
+ /* 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;
+
+ {
+ /* TODO: fix the setting of the MAC address.
+ Right now you must either specify a netdevice with "parent=", whose
+ address is copied or the (default) address of the Sitecom WL-153
+ bootloader is used */
+ static const u8 dflt_addr[ETH_ALEN] = {0,0x50,0xfc,2,3,4};
+ if (parent_dev) {
+ memcpy(dev->dev_addr, parent_dev->dev_addr, ETH_ALEN);
+ } else {
+ printk(KERN_WARNING "%s: no parent - using default mac address\n",
+ dev->name);
+ memcpy(dev->dev_addr, dflt_addr, ETH_ALEN);
+ }
+ dev->dev_addr[ETH_ALEN-1] += card_idx ^ 1; /* + 0 or 1 */
+ }
+
+#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;
+ }
+
+ dbg(DBG_INIT, "%s successfully registered\n", dev->name);
+ 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;
+}
+
+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[] = {
- {0x17F3, 0x6040, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},
- //{0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RDC_6040},
- {0,} /* terminate list */
+ { 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(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);
+ if (parent)
+ parent_dev = dev_get_by_name(&init_net, parent);
+
+ 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);
module_exit(r6040_cleanup);
-
-
-/*
- * Local variables:
- * compile-command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c r6040.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`"
- * c-indent-level: 4
- * c-basic-offset: 4
- * tab-width: 4
- * End:
- */
projects / openwrt.git / blobdiff