diff options
Diffstat (limited to 'drivers/net/tulip/winbond-840.c')
| -rw-r--r-- | drivers/net/tulip/winbond-840.c | 1670 |
1 files changed, 0 insertions, 1670 deletions
diff --git a/drivers/net/tulip/winbond-840.c b/drivers/net/tulip/winbond-840.c deleted file mode 100644 index 862eadf07191..000000000000 --- a/drivers/net/tulip/winbond-840.c +++ /dev/null @@ -1,1670 +0,0 @@ -/* winbond-840.c: A Linux PCI network adapter device driver. */ -/* - Written 1998-2001 by Donald Becker. - - This software may be used and distributed according to the terms of - the GNU General Public License (GPL), incorporated herein by reference. - Drivers based on or derived from this code fall under the GPL and must - retain the authorship, copyright and license notice. This file is not - a complete program and may only be used when the entire operating - system is licensed under the GPL. - - The author may be reached as becker@scyld.com, or C/O - Scyld Computing Corporation - 410 Severn Ave., Suite 210 - Annapolis MD 21403 - - Support and updates available at - http://www.scyld.com/network/drivers.html - - Do not remove the copyright information. - Do not change the version information unless an improvement has been made. - Merely removing my name, as Compex has done in the past, does not count - as an improvement. - - Changelog: - * ported to 2.4 - ??? - * spin lock update, memory barriers, new style dma mappings - limit each tx buffer to < 1024 bytes - remove DescIntr from Rx descriptors (that's an Tx flag) - remove next pointer from Tx descriptors - synchronize tx_q_bytes - software reset in tx_timeout - Copyright (C) 2000 Manfred Spraul - * further cleanups - power management. - support for big endian descriptors - Copyright (C) 2001 Manfred Spraul - * ethtool support (jgarzik) - * Replace some MII-related magic numbers with constants (jgarzik) - - TODO: - * enable pci_power_off - * Wake-On-LAN -*/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#define DRV_NAME "winbond-840" -#define DRV_VERSION "1.01-e" -#define DRV_RELDATE "Sep-11-2006" - - -/* Automatically extracted configuration info: -probe-func: winbond840_probe -config-in: tristate 'Winbond W89c840 Ethernet support' CONFIG_WINBOND_840 - -c-help-name: Winbond W89c840 PCI Ethernet support -c-help-symbol: CONFIG_WINBOND_840 -c-help: This driver is for the Winbond W89c840 chip. It also works with -c-help: the TX9882 chip on the Compex RL100-ATX board. -c-help: More specific information and updates are available from -c-help: http://www.scyld.com/network/drivers.html -*/ - -/* The user-configurable values. - These may be modified when a driver module is loaded.*/ - -static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ -static int max_interrupt_work = 20; -/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). - The '840 uses a 64 element hash table based on the Ethernet CRC. */ -static int multicast_filter_limit = 32; - -/* Set the copy breakpoint for the copy-only-tiny-frames scheme. - Setting to > 1518 effectively disables this feature. */ -static int rx_copybreak; - -/* Used to pass the media type, etc. - Both 'options[]' and 'full_duplex[]' should exist for driver - interoperability. - The media type is usually passed in 'options[]'. -*/ -#define MAX_UNITS 8 /* More are supported, limit only on options */ -static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; -static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; - -/* Operational parameters that are set at compile time. */ - -/* Keep the ring sizes a power of two for compile efficiency. - The compiler will convert <unsigned>'%'<2^N> into a bit mask. - Making the Tx ring too large decreases the effectiveness of channel - bonding and packet priority. - There are no ill effects from too-large receive rings. */ -#define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ -#define TX_QUEUE_LEN_RESTART 5 - -#define TX_BUFLIMIT (1024-128) - -/* The presumed FIFO size for working around the Tx-FIFO-overflow bug. - To avoid overflowing we don't queue again until we have room for a - full-size packet. - */ -#define TX_FIFO_SIZE (2048) -#define TX_BUG_FIFO_LIMIT (TX_FIFO_SIZE-1514-16) - - -/* Operational parameters that usually are not changed. */ -/* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (2*HZ) - -/* Include files, designed to support most kernel versions 2.0.0 and later. */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/timer.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/dma-mapping.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/ethtool.h> -#include <linux/mii.h> -#include <linux/rtnetlink.h> -#include <linux/crc32.h> -#include <linux/bitops.h> -#include <asm/uaccess.h> -#include <asm/processor.h> /* Processor type for cache alignment. */ -#include <asm/io.h> -#include <asm/irq.h> - -#include "tulip.h" - -#undef PKT_BUF_SZ /* tulip.h also defines this */ -#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ - -/* These identify the driver base version and may not be removed. */ -static const char version[] __initconst = - "v" DRV_VERSION " (2.4 port) " - DRV_RELDATE " Donald Becker <becker@scyld.com>\n" - " http://www.scyld.com/network/drivers.html\n"; - -MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); -MODULE_DESCRIPTION("Winbond W89c840 Ethernet driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); - -module_param(max_interrupt_work, int, 0); -module_param(debug, int, 0); -module_param(rx_copybreak, int, 0); -module_param(multicast_filter_limit, int, 0); -module_param_array(options, int, NULL, 0); -module_param_array(full_duplex, int, NULL, 0); -MODULE_PARM_DESC(max_interrupt_work, "winbond-840 maximum events handled per interrupt"); -MODULE_PARM_DESC(debug, "winbond-840 debug level (0-6)"); -MODULE_PARM_DESC(rx_copybreak, "winbond-840 copy breakpoint for copy-only-tiny-frames"); -MODULE_PARM_DESC(multicast_filter_limit, "winbond-840 maximum number of filtered multicast addresses"); -MODULE_PARM_DESC(options, "winbond-840: Bits 0-3: media type, bit 17: full duplex"); -MODULE_PARM_DESC(full_duplex, "winbond-840 full duplex setting(s) (1)"); - -/* - Theory of Operation - -I. Board Compatibility - -This driver is for the Winbond w89c840 chip. - -II. Board-specific settings - -None. - -III. Driver operation - -This chip is very similar to the Digital 21*4* "Tulip" family. The first -twelve registers and the descriptor format are nearly identical. Read a -Tulip manual for operational details. - -A significant difference is that the multicast filter and station address are -stored in registers rather than loaded through a pseudo-transmit packet. - -Unlike the Tulip, transmit buffers are limited to 1KB. To transmit a -full-sized packet we must use both data buffers in a descriptor. Thus the -driver uses ring mode where descriptors are implicitly sequential in memory, -rather than using the second descriptor address as a chain pointer to -subsequent descriptors. - -IV. Notes - -If you are going to almost clone a Tulip, why not go all the way and avoid -the need for a new driver? - -IVb. References - -http://www.scyld.com/expert/100mbps.html -http://www.scyld.com/expert/NWay.html -http://www.winbond.com.tw/ - -IVc. Errata - -A horrible bug exists in the transmit FIFO. Apparently the chip doesn't -correctly detect a full FIFO, and queuing more than 2048 bytes may result in -silent data corruption. - -Test with 'ping -s 10000' on a fast computer. - -*/ - - - -/* - PCI probe table. -*/ -enum chip_capability_flags { - CanHaveMII=1, HasBrokenTx=2, AlwaysFDX=4, FDXOnNoMII=8, -}; - -static DEFINE_PCI_DEVICE_TABLE(w840_pci_tbl) = { - { 0x1050, 0x0840, PCI_ANY_ID, 0x8153, 0, 0, 0 }, - { 0x1050, 0x0840, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, - { 0x11f6, 0x2011, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 }, - { } -}; -MODULE_DEVICE_TABLE(pci, w840_pci_tbl); - -enum { - netdev_res_size = 128, /* size of PCI BAR resource */ -}; - -struct pci_id_info { - const char *name; - int drv_flags; /* Driver use, intended as capability flags. */ -}; - -static const struct pci_id_info pci_id_tbl[] __devinitdata = { - { /* Sometime a Level-One switch card. */ - "Winbond W89c840", CanHaveMII | HasBrokenTx | FDXOnNoMII}, - { "Winbond W89c840", CanHaveMII | HasBrokenTx}, - { "Compex RL100-ATX", CanHaveMII | HasBrokenTx}, - { } /* terminate list. */ -}; - -/* This driver was written to use PCI memory space, however some x86 systems - work only with I/O space accesses. See CONFIG_TULIP_MMIO in .config -*/ - -/* Offsets to the Command and Status Registers, "CSRs". - While similar to the Tulip, these registers are longword aligned. - Note: It's not useful to define symbolic names for every register bit in - the device. The name can only partially document the semantics and make - the driver longer and more difficult to read. -*/ -enum w840_offsets { - PCIBusCfg=0x00, TxStartDemand=0x04, RxStartDemand=0x08, - RxRingPtr=0x0C, TxRingPtr=0x10, - IntrStatus=0x14, NetworkConfig=0x18, IntrEnable=0x1C, - RxMissed=0x20, EECtrl=0x24, MIICtrl=0x24, BootRom=0x28, GPTimer=0x2C, - CurRxDescAddr=0x30, CurRxBufAddr=0x34, /* Debug use */ - MulticastFilter0=0x38, MulticastFilter1=0x3C, StationAddr=0x40, - CurTxDescAddr=0x4C, CurTxBufAddr=0x50, -}; - -/* Bits in the NetworkConfig register. */ -enum rx_mode_bits { - AcceptErr=0x80, - RxAcceptBroadcast=0x20, AcceptMulticast=0x10, - RxAcceptAllPhys=0x08, AcceptMyPhys=0x02, -}; - -enum mii_reg_bits { - MDIO_ShiftClk=0x10000, MDIO_DataIn=0x80000, MDIO_DataOut=0x20000, - MDIO_EnbOutput=0x40000, MDIO_EnbIn = 0x00000, -}; - -/* The Tulip Rx and Tx buffer descriptors. */ -struct w840_rx_desc { - s32 status; - s32 length; - u32 buffer1; - u32 buffer2; -}; - -struct w840_tx_desc { - s32 status; - s32 length; - u32 buffer1, buffer2; -}; - -#define MII_CNT 1 /* winbond only supports one MII */ -struct netdev_private { - struct w840_rx_desc *rx_ring; - dma_addr_t rx_addr[RX_RING_SIZE]; - struct w840_tx_desc *tx_ring; - dma_addr_t tx_addr[TX_RING_SIZE]; - dma_addr_t ring_dma_addr; - /* The addresses of receive-in-place skbuffs. */ - struct sk_buff* rx_skbuff[RX_RING_SIZE]; - /* The saved address of a sent-in-place packet/buffer, for later free(). */ - struct sk_buff* tx_skbuff[TX_RING_SIZE]; - struct net_device_stats stats; - struct timer_list timer; /* Media monitoring timer. */ - /* Frequently used values: keep some adjacent for cache effect. */ - spinlock_t lock; - int chip_id, drv_flags; - struct pci_dev *pci_dev; - int csr6; - struct w840_rx_desc *rx_head_desc; - unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ - unsigned int rx_buf_sz; /* Based on MTU+slack. */ - unsigned int cur_tx, dirty_tx; - unsigned int tx_q_bytes; - unsigned int tx_full; /* The Tx queue is full. */ - /* MII transceiver section. */ - int mii_cnt; /* MII device addresses. */ - unsigned char phys[MII_CNT]; /* MII device addresses, but only the first is used */ - u32 mii; - struct mii_if_info mii_if; - void __iomem *base_addr; -}; - -static int eeprom_read(void __iomem *ioaddr, int location); -static int mdio_read(struct net_device *dev, int phy_id, int location); -static void mdio_write(struct net_device *dev, int phy_id, int location, int value); -static int netdev_open(struct net_device *dev); -static int update_link(struct net_device *dev); -static void netdev_timer(unsigned long data); -static void init_rxtx_rings(struct net_device *dev); -static void free_rxtx_rings(struct netdev_private *np); -static void init_registers(struct net_device *dev); -static void tx_timeout(struct net_device *dev); -static int alloc_ringdesc(struct net_device *dev); -static void free_ringdesc(struct netdev_private *np); -static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev); -static irqreturn_t intr_handler(int irq, void *dev_instance); -static void netdev_error(struct net_device *dev, int intr_status); -static int netdev_rx(struct net_device *dev); -static u32 __set_rx_mode(struct net_device *dev); -static void set_rx_mode(struct net_device *dev); -static struct net_device_stats *get_stats(struct net_device *dev); -static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); -static const struct ethtool_ops netdev_ethtool_ops; -static int netdev_close(struct net_device *dev); - -static const struct net_device_ops netdev_ops = { - .ndo_open = netdev_open, - .ndo_stop = netdev_close, - .ndo_start_xmit = start_tx, - .ndo_get_stats = get_stats, - .ndo_set_multicast_list = set_rx_mode, - .ndo_do_ioctl = netdev_ioctl, - .ndo_tx_timeout = tx_timeout, - .ndo_change_mtu = eth_change_mtu, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, -}; - -static int __devinit w840_probe1 (struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct net_device *dev; - struct netdev_private *np; - static int find_cnt; - int chip_idx = ent->driver_data; - int irq; - int i, option = find_cnt < MAX_UNITS ? options[find_cnt] : 0; - void __iomem *ioaddr; - - i = pci_enable_device(pdev); - if (i) return i; - - pci_set_master(pdev); - - irq = pdev->irq; - - if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { - pr_warn("Device %s disabled due to DMA limitations\n", - pci_name(pdev)); - return -EIO; - } - dev = alloc_etherdev(sizeof(*np)); - if (!dev) - return -ENOMEM; - SET_NETDEV_DEV(dev, &pdev->dev); - - if (pci_request_regions(pdev, DRV_NAME)) - goto err_out_netdev; - - ioaddr = pci_iomap(pdev, TULIP_BAR, netdev_res_size); - if (!ioaddr) - goto err_out_free_res; - - for (i = 0; i < 3; i++) - ((__le16 *)dev->dev_addr)[i] = cpu_to_le16(eeprom_read(ioaddr, i)); - - /* Reset the chip to erase previous misconfiguration. - No hold time required! */ - iowrite32(0x00000001, ioaddr + PCIBusCfg); - - dev->base_addr = (unsigned long)ioaddr; - dev->irq = irq; - - np = netdev_priv(dev); - np->pci_dev = pdev; - np->chip_id = chip_idx; - np->drv_flags = pci_id_tbl[chip_idx].drv_flags; - spin_lock_init(&np->lock); - np->mii_if.dev = dev; - np->mii_if.mdio_read = mdio_read; - np->mii_if.mdio_write = mdio_write; - np->base_addr = ioaddr; - - pci_set_drvdata(pdev, dev); - - if (dev->mem_start) - option = dev->mem_start; - - /* The lower four bits are the media type. */ - if (option > 0) { - if (option & 0x200) - np->mii_if.full_duplex = 1; - if (option & 15) - dev_info(&dev->dev, - "ignoring user supplied media type %d", - option & 15); - } - if (find_cnt < MAX_UNITS && full_duplex[find_cnt] > 0) - np->mii_if.full_duplex = 1; - - if (np->mii_if.full_duplex) - np->mii_if.force_media = 1; - - /* The chip-specific entries in the device structure. */ - dev->netdev_ops = &netdev_ops; - dev->ethtool_ops = &netdev_ethtool_ops; - dev->watchdog_timeo = TX_TIMEOUT; - - i = register_netdev(dev); - if (i) - goto err_out_cleardev; - - dev_info(&dev->dev, "%s at %p, %pM, IRQ %d\n", - pci_id_tbl[chip_idx].name, ioaddr, dev->dev_addr, irq); - - if (np->drv_flags & CanHaveMII) { - int phy, phy_idx = 0; - for (phy = 1; phy < 32 && phy_idx < MII_CNT; phy++) { - int mii_status = mdio_read(dev, phy, MII_BMSR); - if (mii_status != 0xffff && mii_status != 0x0000) { - np->phys[phy_idx++] = phy; - np->mii_if.advertising = mdio_read(dev, phy, MII_ADVERTISE); - np->mii = (mdio_read(dev, phy, MII_PHYSID1) << 16)+ - mdio_read(dev, phy, MII_PHYSID2); - dev_info(&dev->dev, - "MII PHY %08xh found at address %d, status 0x%04x advertising %04x\n", - np->mii, phy, mii_status, - np->mii_if.advertising); - } - } - np->mii_cnt = phy_idx; - np->mii_if.phy_id = np->phys[0]; - if (phy_idx == 0) { - dev_warn(&dev->dev, - "MII PHY not found -- this device may not operate correctly\n"); - } - } - - find_cnt++; - return 0; - -err_out_cleardev: - pci_set_drvdata(pdev, NULL); - pci_iounmap(pdev, ioaddr); -err_out_free_res: - pci_release_regions(pdev); -err_out_netdev: - free_netdev (dev); - return -ENODEV; -} - - -/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. These are - often serial bit streams generated by the host processor. - The example below is for the common 93c46 EEPROM, 64 16 bit words. */ - -/* Delay between EEPROM clock transitions. - No extra delay is needed with 33Mhz PCI, but future 66Mhz access may need - a delay. Note that pre-2.0.34 kernels had a cache-alignment bug that - made udelay() unreliable. - The old method of using an ISA access as a delay, __SLOW_DOWN_IO__, is - deprecated. -*/ -#define eeprom_delay(ee_addr) ioread32(ee_addr) - -enum EEPROM_Ctrl_Bits { - EE_ShiftClk=0x02, EE_Write0=0x801, EE_Write1=0x805, - EE_ChipSelect=0x801, EE_DataIn=0x08, -}; - -/* The EEPROM commands include the alway-set leading bit. */ -enum EEPROM_Cmds { - EE_WriteCmd=(5 << 6), EE_ReadCmd=(6 << 6), EE_EraseCmd=(7 << 6), -}; - -static int eeprom_read(void __iomem *addr, int location) -{ - int i; - int retval = 0; - void __iomem *ee_addr = addr + EECtrl; - int read_cmd = location | EE_ReadCmd; - iowrite32(EE_ChipSelect, ee_addr); - - /* Shift the read command bits out. */ - for (i = 10; i >= 0; i--) { - short dataval = (read_cmd & (1 << i)) ? EE_Write1 : EE_Write0; - iowrite32(dataval, ee_addr); - eeprom_delay(ee_addr); - iowrite32(dataval | EE_ShiftClk, ee_addr); - eeprom_delay(ee_addr); - } - iowrite32(EE_ChipSelect, ee_addr); - eeprom_delay(ee_addr); - - for (i = 16; i > 0; i--) { - iowrite32(EE_ChipSelect | EE_ShiftClk, ee_addr); - eeprom_delay(ee_addr); - retval = (retval << 1) | ((ioread32(ee_addr) & EE_DataIn) ? 1 : 0); - iowrite32(EE_ChipSelect, ee_addr); - eeprom_delay(ee_addr); - } - - /* Terminate the EEPROM access. */ - iowrite32(0, ee_addr); - return retval; -} - -/* MII transceiver control section. - Read and write the MII registers using software-generated serial - MDIO protocol. See the MII specifications or DP83840A data sheet - for details. - - The maximum data clock rate is 2.5 Mhz. The minimum timing is usually - met by back-to-back 33Mhz PCI cycles. */ -#define mdio_delay(mdio_addr) ioread32(mdio_addr) - -/* Set iff a MII transceiver on any interface requires mdio preamble. - This only set with older transceivers, so the extra - code size of a per-interface flag is not worthwhile. */ -static char mii_preamble_required = 1; - -#define MDIO_WRITE0 (MDIO_EnbOutput) -#define MDIO_WRITE1 (MDIO_DataOut | MDIO_EnbOutput) - -/* Generate the preamble required for initial synchronization and - a few older transceivers. */ -static void mdio_sync(void __iomem *mdio_addr) -{ - int bits = 32; - - /* Establish sync by sending at least 32 logic ones. */ - while (--bits >= 0) { - iowrite32(MDIO_WRITE1, mdio_addr); - mdio_delay(mdio_addr); - iowrite32(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr); - mdio_delay(mdio_addr); - } -} - -static int mdio_read(struct net_device *dev, int phy_id, int location) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *mdio_addr = np->base_addr + MIICtrl; - int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; - int i, retval = 0; - - if (mii_preamble_required) - mdio_sync(mdio_addr); - - /* Shift the read command bits out. */ - for (i = 15; i >= 0; i--) { - int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; - - iowrite32(dataval, mdio_addr); - mdio_delay(mdio_addr); - iowrite32(dataval | MDIO_ShiftClk, mdio_addr); - mdio_delay(mdio_addr); - } - /* Read the two transition, 16 data, and wire-idle bits. */ - for (i = 20; i > 0; i--) { - iowrite32(MDIO_EnbIn, mdio_addr); - mdio_delay(mdio_addr); - retval = (retval << 1) | ((ioread32(mdio_addr) & MDIO_DataIn) ? 1 : 0); - iowrite32(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); - mdio_delay(mdio_addr); - } - return (retval>>1) & 0xffff; -} - -static void mdio_write(struct net_device *dev, int phy_id, int location, int value) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *mdio_addr = np->base_addr + MIICtrl; - int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value; - int i; - - if (location == 4 && phy_id == np->phys[0]) - np->mii_if.advertising = value; - - if (mii_preamble_required) - mdio_sync(mdio_addr); - - /* Shift the command bits out. */ - for (i = 31; i >= 0; i--) { - int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; - - iowrite32(dataval, mdio_addr); - mdio_delay(mdio_addr); - iowrite32(dataval | MDIO_ShiftClk, mdio_addr); - mdio_delay(mdio_addr); - } - /* Clear out extra bits. */ - for (i = 2; i > 0; i--) { - iowrite32(MDIO_EnbIn, mdio_addr); - mdio_delay(mdio_addr); - iowrite32(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); - mdio_delay(mdio_addr); - } -} - - -static int netdev_open(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - int i; - - iowrite32(0x00000001, ioaddr + PCIBusCfg); /* Reset */ - - netif_device_detach(dev); - i = request_irq(dev->irq, intr_handler, IRQF_SHARED, dev->name, dev); - if (i) - goto out_err; - - if (debug > 1) - netdev_dbg(dev, "w89c840_open() irq %d\n", dev->irq); - - if((i=alloc_ringdesc(dev))) - goto out_err; - - spin_lock_irq(&np->lock); - netif_device_attach(dev); - init_registers(dev); - spin_unlock_irq(&np->lock); - - netif_start_queue(dev); - if (debug > 2) - netdev_dbg(dev, "Done netdev_open()\n"); - - /* Set the timer to check for link beat. */ - init_timer(&np->timer); - np->timer.expires = jiffies + 1*HZ; - np->timer.data = (unsigned long)dev; - np->timer.function = netdev_timer; /* timer handler */ - add_timer(&np->timer); - return 0; -out_err: - netif_device_attach(dev); - return i; -} - -#define MII_DAVICOM_DM9101 0x0181b800 - -static int update_link(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - int duplex, fasteth, result, mii_reg; - - /* BSMR */ - mii_reg = mdio_read(dev, np->phys[0], MII_BMSR); - - if (mii_reg == 0xffff) - return np->csr6; - /* reread: the link status bit is sticky */ - mii_reg = mdio_read(dev, np->phys[0], MII_BMSR); - if (!(mii_reg & 0x4)) { - if (netif_carrier_ok(dev)) { - if (debug) - dev_info(&dev->dev, - "MII #%d reports no link. Disabling watchdog\n", - np->phys[0]); - netif_carrier_off(dev); - } - return np->csr6; - } - if (!netif_carrier_ok(dev)) { - if (debug) - dev_info(&dev->dev, - "MII #%d link is back. Enabling watchdog\n", - np->phys[0]); - netif_carrier_on(dev); - } - - if ((np->mii & ~0xf) == MII_DAVICOM_DM9101) { - /* If the link partner doesn't support autonegotiation - * the MII detects it's abilities with the "parallel detection". - * Some MIIs update the LPA register to the result of the parallel - * detection, some don't. - * The Davicom PHY [at least 0181b800] doesn't. - * Instead bit 9 and 13 of the BMCR are updated to the result - * of the negotiation.. - */ - mii_reg = mdio_read(dev, np->phys[0], MII_BMCR); - duplex = mii_reg & BMCR_FULLDPLX; - fasteth = mii_reg & BMCR_SPEED100; - } else { - int negotiated; - mii_reg = mdio_read(dev, np->phys[0], MII_LPA); - negotiated = mii_reg & np->mii_if.advertising; - - duplex = (negotiated & LPA_100FULL) || ((negotiated & 0x02C0) == LPA_10FULL); - fasteth = negotiated & 0x380; - } - duplex |= np->mii_if.force_media; - /* remove fastether and fullduplex */ - result = np->csr6 & ~0x20000200; - if (duplex) - result |= 0x200; - if (fasteth) - result |= 0x20000000; - if (result != np->csr6 && debug) - dev_info(&dev->dev, - "Setting %dMBit-%s-duplex based on MII#%d\n", - fasteth ? 100 : 10, duplex ? "full" : "half", - np->phys[0]); - return result; -} - -#define RXTX_TIMEOUT 2000 -static inline void update_csr6(struct net_device *dev, int new) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - int limit = RXTX_TIMEOUT; - - if (!netif_device_present(dev)) - new = 0; - if (new==np->csr6) - return; - /* stop both Tx and Rx processes */ - iowrite32(np->csr6 & ~0x2002, ioaddr + NetworkConfig); - /* wait until they have really stopped */ - for (;;) { - int csr5 = ioread32(ioaddr + IntrStatus); - int t; - - t = (csr5 >> 17) & 0x07; - if (t==0||t==1) { - /* rx stopped */ - t = (csr5 >> 20) & 0x07; - if (t==0||t==1) - break; - } - - limit--; - if(!limit) { - dev_info(&dev->dev, - "couldn't stop rxtx, IntrStatus %xh\n", csr5); - break; - } - udelay(1); - } - np->csr6 = new; - /* and restart them with the new configuration */ - iowrite32(np->csr6, ioaddr + NetworkConfig); - if (new & 0x200) - np->mii_if.full_duplex = 1; -} - -static void netdev_timer(unsigned long data) -{ - struct net_device *dev = (struct net_device *)data; - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - - if (debug > 2) - netdev_dbg(dev, "Media selection timer tick, status %08x config %08x\n", - ioread32(ioaddr + IntrStatus), - ioread32(ioaddr + NetworkConfig)); - spin_lock_irq(&np->lock); - update_csr6(dev, update_link(dev)); - spin_unlock_irq(&np->lock); - np->timer.expires = jiffies + 10*HZ; - add_timer(&np->timer); -} - -static void init_rxtx_rings(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - int i; - - np->rx_head_desc = &np->rx_ring[0]; - np->tx_ring = (struct w840_tx_desc*)&np->rx_ring[RX_RING_SIZE]; - - /* Initial all Rx descriptors. */ - for (i = 0; i < RX_RING_SIZE; i++) { - np->rx_ring[i].length = np->rx_buf_sz; - np->rx_ring[i].status = 0; - np->rx_skbuff[i] = NULL; - } - /* Mark the last entry as wrapping the ring. */ - np->rx_ring[i-1].length |= DescEndRing; - - /* Fill in the Rx buffers. Handle allocation failure gracefully. */ - for (i = 0; i < RX_RING_SIZE; i++) { - struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); - np->rx_skbuff[i] = skb; - if (skb == NULL) - break; - np->rx_addr[i] = pci_map_single(np->pci_dev,skb->data, - np->rx_buf_sz,PCI_DMA_FROMDEVICE); - - np->rx_ring[i].buffer1 = np->rx_addr[i]; - np->rx_ring[i].status = DescOwned; - } - - np->cur_rx = 0; - np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); - - /* Initialize the Tx descriptors */ - for (i = 0; i < TX_RING_SIZE; i++) { - np->tx_skbuff[i] = NULL; - np->tx_ring[i].status = 0; - } - np->tx_full = 0; - np->tx_q_bytes = np->dirty_tx = np->cur_tx = 0; - - iowrite32(np->ring_dma_addr, np->base_addr + RxRingPtr); - iowrite32(np->ring_dma_addr+sizeof(struct w840_rx_desc)*RX_RING_SIZE, - np->base_addr + TxRingPtr); - -} - -static void free_rxtx_rings(struct netdev_private* np) -{ - int i; - /* Free all the skbuffs in the Rx queue. */ - for (i = 0; i < RX_RING_SIZE; i++) { - np->rx_ring[i].status = 0; - if (np->rx_skbuff[i]) { - pci_unmap_single(np->pci_dev, - np->rx_addr[i], - np->rx_skbuff[i]->len, - PCI_DMA_FROMDEVICE); - dev_kfree_skb(np->rx_skbuff[i]); - } - np->rx_skbuff[i] = NULL; - } - for (i = 0; i < TX_RING_SIZE; i++) { - if (np->tx_skbuff[i]) { - pci_unmap_single(np->pci_dev, - np->tx_addr[i], - np->tx_skbuff[i]->len, - PCI_DMA_TODEVICE); - dev_kfree_skb(np->tx_skbuff[i]); - } - np->tx_skbuff[i] = NULL; - } -} - -static void init_registers(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - int i; - - for (i = 0; i < 6; i++) - iowrite8(dev->dev_addr[i], ioaddr + StationAddr + i); - - /* Initialize other registers. */ -#ifdef __BIG_ENDIAN - i = (1<<20); /* Big-endian descriptors */ -#else - i = 0; -#endif - i |= (0x04<<2); /* skip length 4 u32 */ - i |= 0x02; /* give Rx priority */ - - /* Configure the PCI bus bursts and FIFO thresholds. - 486: Set 8 longword cache alignment, 8 longword burst. - 586: Set 16 longword cache alignment, no burst limit. - Cache alignment bits 15:14 Burst length 13:8 - 0000 <not allowed> 0000 align to cache 0800 8 longwords - 4000 8 longwords 0100 1 longword 1000 16 longwords - 8000 16 longwords 0200 2 longwords 2000 32 longwords - C000 32 longwords 0400 4 longwords */ - -#if defined (__i386__) && !defined(MODULE) - /* When not a module we can work around broken '486 PCI boards. */ - if (boot_cpu_data.x86 <= 4) { - i |= 0x4800; - dev_info(&dev->dev, - "This is a 386/486 PCI system, setting cache alignment to 8 longwords\n"); - } else { - i |= 0xE000; - } -#elif defined(__powerpc__) || defined(__i386__) || defined(__alpha__) || defined(__ia64__) || defined(__x86_64__) - i |= 0xE000; -#elif defined(CONFIG_SPARC) || defined (CONFIG_PARISC) - i |= 0x4800; -#else -#warning Processor architecture undefined - i |= 0x4800; -#endif - iowrite32(i, ioaddr + PCIBusCfg); - - np->csr6 = 0; - /* 128 byte Tx threshold; - Transmit on; Receive on; */ - update_csr6(dev, 0x00022002 | update_link(dev) | __set_rx_mode(dev)); - - /* Clear and Enable interrupts by setting the interrupt mask. */ - iowrite32(0x1A0F5, ioaddr + IntrStatus); - iowrite32(0x1A0F5, ioaddr + IntrEnable); - - iowrite32(0, ioaddr + RxStartDemand); -} - -static void tx_timeout(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - - dev_warn(&dev->dev, "Transmit timed out, status %08x, resetting...\n", - ioread32(ioaddr + IntrStatus)); - - { - int i; - printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring); - for (i = 0; i < RX_RING_SIZE; i++) - printk(KERN_CONT " %08x", (unsigned int)np->rx_ring[i].status); - printk(KERN_CONT "\n"); - printk(KERN_DEBUG " Tx ring %p: ", np->tx_ring); - for (i = 0; i < TX_RING_SIZE; i++) - printk(KERN_CONT " %08x", np->tx_ring[i].status); - printk(KERN_CONT "\n"); - } - printk(KERN_DEBUG "Tx cur %d Tx dirty %d Tx Full %d, q bytes %d\n", - np->cur_tx, np->dirty_tx, np->tx_full, np->tx_q_bytes); - printk(KERN_DEBUG "Tx Descriptor addr %xh\n", ioread32(ioaddr+0x4C)); - - disable_irq(dev->irq); - spin_lock_irq(&np->lock); - /* - * Under high load dirty_tx and the internal tx descriptor pointer - * come out of sync, thus perform a software reset and reinitialize - * everything. - */ - - iowrite32(1, np->base_addr+PCIBusCfg); - udelay(1); - - free_rxtx_rings(np); - init_rxtx_rings(dev); - init_registers(dev); - spin_unlock_irq(&np->lock); - enable_irq(dev->irq); - - netif_wake_queue(dev); - dev->trans_start = jiffies; /* prevent tx timeout */ - np->stats.tx_errors++; -} - -/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ -static int alloc_ringdesc(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - - np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); - - np->rx_ring = pci_alloc_consistent(np->pci_dev, - sizeof(struct w840_rx_desc)*RX_RING_SIZE + - sizeof(struct w840_tx_desc)*TX_RING_SIZE, - &np->ring_dma_addr); - if(!np->rx_ring) - return -ENOMEM; - init_rxtx_rings(dev); - return 0; -} - -static void free_ringdesc(struct netdev_private *np) -{ - pci_free_consistent(np->pci_dev, - sizeof(struct w840_rx_desc)*RX_RING_SIZE + - sizeof(struct w840_tx_desc)*TX_RING_SIZE, - np->rx_ring, np->ring_dma_addr); - -} - -static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - unsigned entry; - - /* Caution: the write order is important here, set the field - with the "ownership" bits last. */ - - /* Calculate the next Tx descriptor entry. */ - entry = np->cur_tx % TX_RING_SIZE; - - np->tx_addr[entry] = pci_map_single(np->pci_dev, - skb->data,skb->len, PCI_DMA_TODEVICE); - np->tx_skbuff[entry] = skb; - - np->tx_ring[entry].buffer1 = np->tx_addr[entry]; - if (skb->len < TX_BUFLIMIT) { - np->tx_ring[entry].length = DescWholePkt | skb->len; - } else { - int len = skb->len - TX_BUFLIMIT; - - np->tx_ring[entry].buffer2 = np->tx_addr[entry]+TX_BUFLIMIT; - np->tx_ring[entry].length = DescWholePkt | (len << 11) | TX_BUFLIMIT; - } - if(entry == TX_RING_SIZE-1) - np->tx_ring[entry].length |= DescEndRing; - - /* Now acquire the irq spinlock. - * The difficult race is the ordering between - * increasing np->cur_tx and setting DescOwned: - * - if np->cur_tx is increased first the interrupt - * handler could consider the packet as transmitted - * since DescOwned is cleared. - * - If DescOwned is set first the NIC could report the - * packet as sent, but the interrupt handler would ignore it - * since the np->cur_tx was not yet increased. - */ - spin_lock_irq(&np->lock); - np->cur_tx++; - - wmb(); /* flush length, buffer1, buffer2 */ - np->tx_ring[entry].status = DescOwned; - wmb(); /* flush status and kick the hardware */ - iowrite32(0, np->base_addr + TxStartDemand); - np->tx_q_bytes += skb->len; - /* Work around horrible bug in the chip by marking the queue as full - when we do not have FIFO room for a maximum sized packet. */ - if (np->cur_tx - np->dirty_tx > TX_QUEUE_LEN || - ((np->drv_flags & HasBrokenTx) && np->tx_q_bytes > TX_BUG_FIFO_LIMIT)) { - netif_stop_queue(dev); - wmb(); - np->tx_full = 1; - } - spin_unlock_irq(&np->lock); - - if (debug > 4) { - netdev_dbg(dev, "Transmit frame #%d queued in slot %d\n", - np->cur_tx, entry); - } - return NETDEV_TX_OK; -} - -static void netdev_tx_done(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { - int entry = np->dirty_tx % TX_RING_SIZE; - int tx_status = np->tx_ring[entry].status; - - if (tx_status < 0) - break; - if (tx_status & 0x8000) { /* There was an error, log it. */ -#ifndef final_version - if (debug > 1) - netdev_dbg(dev, "Transmit error, Tx status %08x\n", - tx_status); -#endif - np->stats.tx_errors++; - if (tx_status & 0x0104) np->stats.tx_aborted_errors++; - if (tx_status & 0x0C80) np->stats.tx_carrier_errors++; - if (tx_status & 0x0200) np->stats.tx_window_errors++; - if (tx_status & 0x0002) np->stats.tx_fifo_errors++; - if ((tx_status & 0x0080) && np->mii_if.full_duplex == 0) - np->stats.tx_heartbeat_errors++; - } else { -#ifndef final_version - if (debug > 3) - netdev_dbg(dev, "Transmit slot %d ok, Tx status %08x\n", - entry, tx_status); -#endif - np->stats.tx_bytes += np->tx_skbuff[entry]->len; - np->stats.collisions += (tx_status >> 3) & 15; - np->stats.tx_packets++; - } - /* Free the original skb. */ - pci_unmap_single(np->pci_dev,np->tx_addr[entry], - np->tx_skbuff[entry]->len, - PCI_DMA_TODEVICE); - np->tx_q_bytes -= np->tx_skbuff[entry]->len; - dev_kfree_skb_irq(np->tx_skbuff[entry]); - np->tx_skbuff[entry] = NULL; - } - if (np->tx_full && - np->cur_tx - np->dirty_tx < TX_QUEUE_LEN_RESTART && - np->tx_q_bytes < TX_BUG_FIFO_LIMIT) { - /* The ring is no longer full, clear tbusy. */ - np->tx_full = 0; - wmb(); - netif_wake_queue(dev); - } -} - -/* The interrupt handler does all of the Rx thread work and cleans up - after the Tx thread. */ -static irqreturn_t intr_handler(int irq, void *dev_instance) -{ - struct net_device *dev = (struct net_device *)dev_instance; - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - int work_limit = max_interrupt_work; - int handled = 0; - - if (!netif_device_present(dev)) - return IRQ_NONE; - do { - u32 intr_status = ioread32(ioaddr + IntrStatus); - - /* Acknowledge all of the current interrupt sources ASAP. */ - iowrite32(intr_status & 0x001ffff, ioaddr + IntrStatus); - - if (debug > 4) - netdev_dbg(dev, "Interrupt, status %04x\n", intr_status); - - if ((intr_status & (NormalIntr|AbnormalIntr)) == 0) - break; - - handled = 1; - - if (intr_status & (RxIntr | RxNoBuf)) - netdev_rx(dev); - if (intr_status & RxNoBuf) - iowrite32(0, ioaddr + RxStartDemand); - - if (intr_status & (TxNoBuf | TxIntr) && - np->cur_tx != np->dirty_tx) { - spin_lock(&np->lock); - netdev_tx_done(dev); - spin_unlock(&np->lock); - } - - /* Abnormal error summary/uncommon events handlers. */ - if (intr_status & (AbnormalIntr | TxFIFOUnderflow | SystemError | - TimerInt | TxDied)) - netdev_error(dev, intr_status); - - if (--work_limit < 0) { - dev_warn(&dev->dev, - "Too much work at interrupt, status=0x%04x\n", - intr_status); - /* Set the timer to re-enable the other interrupts after - 10*82usec ticks. */ - spin_lock(&np->lock); - if (netif_device_present(dev)) { - iowrite32(AbnormalIntr | TimerInt, ioaddr + IntrEnable); - iowrite32(10, ioaddr + GPTimer); - } - spin_unlock(&np->lock); - break; - } - } while (1); - - if (debug > 3) - netdev_dbg(dev, "exiting interrupt, status=%#4.4x\n", - ioread32(ioaddr + IntrStatus)); - return IRQ_RETVAL(handled); -} - -/* This routine is logically part of the interrupt handler, but separated - for clarity and better register allocation. */ -static int netdev_rx(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - int entry = np->cur_rx % RX_RING_SIZE; - int work_limit = np->dirty_rx + RX_RING_SIZE - np->cur_rx; - - if (debug > 4) { - netdev_dbg(dev, " In netdev_rx(), entry %d status %04x\n", - entry, np->rx_ring[entry].status); - } - - /* If EOP is set on the next entry, it's a new packet. Send it up. */ - while (--work_limit >= 0) { - struct w840_rx_desc *desc = np->rx_head_desc; - s32 status = desc->status; - - if (debug > 4) - netdev_dbg(dev, " netdev_rx() status was %08x\n", - status); - if (status < 0) - break; - if ((status & 0x38008300) != 0x0300) { - if ((status & 0x38000300) != 0x0300) { - /* Ingore earlier buffers. */ - if ((status & 0xffff) != 0x7fff) { - dev_warn(&dev->dev, - "Oversized Ethernet frame spanned multiple buffers, entry %#x status %04x!\n", - np->cur_rx, status); - np->stats.rx_length_errors++; - } - } else if (status & 0x8000) { - /* There was a fatal error. */ - if (debug > 2) - netdev_dbg(dev, "Receive error, Rx status %08x\n", - status); - np->stats.rx_errors++; /* end of a packet.*/ - if (status & 0x0890) np->stats.rx_length_errors++; - if (status & 0x004C) np->stats.rx_frame_errors++; - if (status & 0x0002) np->stats.rx_crc_errors++; - } - } else { - struct sk_buff *skb; - /* Omit the four octet CRC from the length. */ - int pkt_len = ((status >> 16) & 0x7ff) - 4; - -#ifndef final_version - if (debug > 4) - netdev_dbg(dev, " netdev_rx() normal Rx pkt length %d status %x\n", - pkt_len, status); -#endif - /* Check if the packet is long enough to accept without copying - to a minimally-sized skbuff. */ - if (pkt_len < rx_copybreak && - (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { - skb_reserve(skb, 2); /* 16 byte align the IP header */ - pci_dma_sync_single_for_cpu(np->pci_dev,np->rx_addr[entry], - np->rx_skbuff[entry]->len, - PCI_DMA_FROMDEVICE); - skb_copy_to_linear_data(skb, np->rx_skbuff[entry]->data, pkt_len); - skb_put(skb, pkt_len); - pci_dma_sync_single_for_device(np->pci_dev,np->rx_addr[entry], - np->rx_skbuff[entry]->len, - PCI_DMA_FROMDEVICE); - } else { - pci_unmap_single(np->pci_dev,np->rx_addr[entry], - np->rx_skbuff[entry]->len, - PCI_DMA_FROMDEVICE); - skb_put(skb = np->rx_skbuff[entry], pkt_len); - np->rx_skbuff[entry] = NULL; - } -#ifndef final_version /* Remove after testing. */ - /* You will want this info for the initial debug. */ - if (debug > 5) - netdev_dbg(dev, " Rx data %pM %pM %02x%02x %pI4\n", - &skb->data[0], &skb->data[6], - skb->data[12], skb->data[13], - &skb->data[14]); -#endif - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - np->stats.rx_packets++; - np->stats.rx_bytes += pkt_len; - } - entry = (++np->cur_rx) % RX_RING_SIZE; - np->rx_head_desc = &np->rx_ring[entry]; - } - - /* Refill the Rx ring buffers. */ - for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { - struct sk_buff *skb; - entry = np->dirty_rx % RX_RING_SIZE; - if (np->rx_skbuff[entry] == NULL) { - skb = dev_alloc_skb(np->rx_buf_sz); - np->rx_skbuff[entry] = skb; - if (skb == NULL) - break; /* Better luck next round. */ - np->rx_addr[entry] = pci_map_single(np->pci_dev, - skb->data, - np->rx_buf_sz, PCI_DMA_FROMDEVICE); - np->rx_ring[entry].buffer1 = np->rx_addr[entry]; - } - wmb(); - np->rx_ring[entry].status = DescOwned; - } - - return 0; -} - -static void netdev_error(struct net_device *dev, int intr_status) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - - if (debug > 2) - netdev_dbg(dev, "Abnormal event, %08x\n", intr_status); - if (intr_status == 0xffffffff) - return; - spin_lock(&np->lock); - if (intr_status & TxFIFOUnderflow) { - int new; - /* Bump up the Tx threshold */ -#if 0 - /* This causes lots of dropped packets, - * and under high load even tx_timeouts - */ - new = np->csr6 + 0x4000; -#else - new = (np->csr6 >> 14)&0x7f; - if (new < 64) - new *= 2; - else - new = 127; /* load full packet before starting */ - new = (np->csr6 & ~(0x7F << 14)) | (new<<14); -#endif - netdev_dbg(dev, "Tx underflow, new csr6 %08x\n", new); - update_csr6(dev, new); - } - if (intr_status & RxDied) { /* Missed a Rx frame. */ - np->stats.rx_errors++; - } - if (intr_status & TimerInt) { - /* Re-enable other interrupts. */ - if (netif_device_present(dev)) - iowrite32(0x1A0F5, ioaddr + IntrEnable); - } - np->stats.rx_missed_errors += ioread32(ioaddr + RxMissed) & 0xffff; - iowrite32(0, ioaddr + RxStartDemand); - spin_unlock(&np->lock); -} - -static struct net_device_stats *get_stats(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - - /* The chip only need report frame silently dropped. */ - spin_lock_irq(&np->lock); - if (netif_running(dev) && netif_device_present(dev)) - np->stats.rx_missed_errors += ioread32(ioaddr + RxMissed) & 0xffff; - spin_unlock_irq(&np->lock); - - return &np->stats; -} - - -static u32 __set_rx_mode(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - u32 mc_filter[2]; /* Multicast hash filter */ - u32 rx_mode; - - if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ - memset(mc_filter, 0xff, sizeof(mc_filter)); - rx_mode = RxAcceptBroadcast | AcceptMulticast | RxAcceptAllPhys - | AcceptMyPhys; - } else if ((netdev_mc_count(dev) > multicast_filter_limit) || - (dev->flags & IFF_ALLMULTI)) { - /* Too many to match, or accept all multicasts. */ - memset(mc_filter, 0xff, sizeof(mc_filter)); - rx_mode = RxAcceptBroadcast | AcceptMulticast | AcceptMyPhys; - } else { - struct netdev_hw_addr *ha; - - memset(mc_filter, 0, sizeof(mc_filter)); - netdev_for_each_mc_addr(ha, dev) { - int filbit; - - filbit = (ether_crc(ETH_ALEN, ha->addr) >> 26) ^ 0x3F; - filbit &= 0x3f; - mc_filter[filbit >> 5] |= 1 << (filbit & 31); - } - rx_mode = RxAcceptBroadcast | AcceptMulticast | AcceptMyPhys; - } - iowrite32(mc_filter[0], ioaddr + MulticastFilter0); - iowrite32(mc_filter[1], ioaddr + MulticastFilter1); - return rx_mode; -} - -static void set_rx_mode(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - u32 rx_mode = __set_rx_mode(dev); - spin_lock_irq(&np->lock); - update_csr6(dev, (np->csr6 & ~0x00F8) | rx_mode); - spin_unlock_irq(&np->lock); -} - -static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) -{ - struct netdev_private *np = netdev_priv(dev); - - strcpy (info->driver, DRV_NAME); - strcpy (info->version, DRV_VERSION); - strcpy (info->bus_info, pci_name(np->pci_dev)); -} - -static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct netdev_private *np = netdev_priv(dev); - int rc; - - spin_lock_irq(&np->lock); - rc = mii_ethtool_gset(&np->mii_if, cmd); - spin_unlock_irq(&np->lock); - - return rc; -} - -static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct netdev_private *np = netdev_priv(dev); - int rc; - - spin_lock_irq(&np->lock); - rc = mii_ethtool_sset(&np->mii_if, cmd); - spin_unlock_irq(&np->lock); - - return rc; -} - -static int netdev_nway_reset(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - return mii_nway_restart(&np->mii_if); -} - -static u32 netdev_get_link(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - return mii_link_ok(&np->mii_if); -} - -static u32 netdev_get_msglevel(struct net_device *dev) -{ - return debug; -} - -static void netdev_set_msglevel(struct net_device *dev, u32 value) -{ - debug = value; -} - -static const struct ethtool_ops netdev_ethtool_ops = { - .get_drvinfo = netdev_get_drvinfo, - .get_settings = netdev_get_settings, - .set_settings = netdev_set_settings, - .nway_reset = netdev_nway_reset, - .get_link = netdev_get_link, - .get_msglevel = netdev_get_msglevel, - .set_msglevel = netdev_set_msglevel, -}; - -static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct mii_ioctl_data *data = if_mii(rq); - struct netdev_private *np = netdev_priv(dev); - - switch(cmd) { - case SIOCGMIIPHY: /* Get address of MII PHY in use. */ - data->phy_id = ((struct netdev_private *)netdev_priv(dev))->phys[0] & 0x1f; - /* Fall Through */ - - case SIOCGMIIREG: /* Read MII PHY register. */ - spin_lock_irq(&np->lock); - data->val_out = mdio_read(dev, data->phy_id & 0x1f, data->reg_num & 0x1f); - spin_unlock_irq(&np->lock); - return 0; - - case SIOCSMIIREG: /* Write MII PHY register. */ - spin_lock_irq(&np->lock); - mdio_write(dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in); - spin_unlock_irq(&np->lock); - return 0; - default: - return -EOPNOTSUPP; - } -} - -static int netdev_close(struct net_device *dev) -{ - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - - netif_stop_queue(dev); - - if (debug > 1) { - netdev_dbg(dev, "Shutting down ethercard, status was %08x Config %08x\n", - ioread32(ioaddr + IntrStatus), - ioread32(ioaddr + NetworkConfig)); - netdev_dbg(dev, "Queue pointers were Tx %d / %d, Rx %d / %d\n", - np->cur_tx, np->dirty_tx, - np->cur_rx, np->dirty_rx); - } - - /* Stop the chip's Tx and Rx processes. */ - spin_lock_irq(&np->lock); - netif_device_detach(dev); - update_csr6(dev, 0); - iowrite32(0x0000, ioaddr + IntrEnable); - spin_unlock_irq(&np->lock); - - free_irq(dev->irq, dev); - wmb(); - netif_device_attach(dev); - - if (ioread32(ioaddr + NetworkConfig) != 0xffffffff) - np->stats.rx_missed_errors += ioread32(ioaddr + RxMissed) & 0xffff; - -#ifdef __i386__ - if (debug > 2) { - int i; - - printk(KERN_DEBUG" Tx ring at %p:\n", np->tx_ring); - for (i = 0; i < TX_RING_SIZE; i++) - printk(KERN_DEBUG " #%d desc. %04x %04x %08x\n", - i, np->tx_ring[i].length, - np->tx_ring[i].status, np->tx_ring[i].buffer1); - printk(KERN_DEBUG " Rx ring %p:\n", np->rx_ring); - for (i = 0; i < RX_RING_SIZE; i++) { - printk(KERN_DEBUG " #%d desc. %04x %04x %08x\n", - i, np->rx_ring[i].length, - np->rx_ring[i].status, np->rx_ring[i].buffer1); - } - } -#endif /* __i386__ debugging only */ - - del_timer_sync(&np->timer); - - free_rxtx_rings(np); - free_ringdesc(np); - - return 0; -} - -static void __devexit w840_remove1 (struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - - if (dev) { - struct netdev_private *np = netdev_priv(dev); - unregister_netdev(dev); - pci_release_regions(pdev); - pci_iounmap(pdev, np->base_addr); - free_netdev(dev); - } - - pci_set_drvdata(pdev, NULL); -} - -#ifdef CONFIG_PM - -/* - * suspend/resume synchronization: - * - open, close, do_ioctl: - * rtnl_lock, & netif_device_detach after the rtnl_unlock. - * - get_stats: - * spin_lock_irq(np->lock), doesn't touch hw if not present - * - start_xmit: - * synchronize_irq + netif_tx_disable; - * - tx_timeout: - * netif_device_detach + netif_tx_disable; - * - set_multicast_list - * netif_device_detach + netif_tx_disable; - * - interrupt handler - * doesn't touch hw if not present, synchronize_irq waits for - * running instances of the interrupt handler. - * - * Disabling hw requires clearing csr6 & IntrEnable. - * update_csr6 & all function that write IntrEnable check netif_device_present - * before settings any bits. - * - * Detach must occur under spin_unlock_irq(), interrupts from a detached - * device would cause an irq storm. - */ -static int w840_suspend (struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *dev = pci_get_drvdata (pdev); - struct netdev_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base_addr; - - rtnl_lock(); - if (netif_running (dev)) { - del_timer_sync(&np->timer); - - spin_lock_irq(&np->lock); - netif_device_detach(dev); - update_csr6(dev, 0); - iowrite32(0, ioaddr + IntrEnable); - spin_unlock_irq(&np->lock); - - synchronize_irq(dev->irq); - netif_tx_disable(dev); - - np->stats.rx_missed_errors += ioread32(ioaddr + RxMissed) & 0xffff; - - /* no more hardware accesses behind this line. */ - - BUG_ON(np->csr6 || ioread32(ioaddr + IntrEnable)); - - /* pci_power_off(pdev, -1); */ - - free_rxtx_rings(np); - } else { - netif_device_detach(dev); - } - rtnl_unlock(); - return 0; -} - -static int w840_resume (struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata (pdev); - struct netdev_private *np = netdev_priv(dev); - int retval = 0; - - rtnl_lock(); - if (netif_device_present(dev)) - goto out; /* device not suspended */ - if (netif_running(dev)) { - if ((retval = pci_enable_device(pdev))) { - dev_err(&dev->dev, - "pci_enable_device failed in resume\n"); - goto out; - } - spin_lock_irq(&np->lock); - iowrite32(1, np->base_addr+PCIBusCfg); - ioread32(np->base_addr+PCIBusCfg); - udelay(1); - netif_device_attach(dev); - init_rxtx_rings(dev); - init_registers(dev); - spin_unlock_irq(&np->lock); - - netif_wake_queue(dev); - - mod_timer(&np->timer, jiffies + 1*HZ); - } else { - netif_device_attach(dev); - } -out: - rtnl_unlock(); - return retval; -} -#endif - -static struct pci_driver w840_driver = { - .name = DRV_NAME, - .id_table = w840_pci_tbl, - .probe = w840_probe1, - .remove = __devexit_p(w840_remove1), -#ifdef CONFIG_PM - .suspend = w840_suspend, - .resume = w840_resume, -#endif -}; - -static int __init w840_init(void) -{ - printk(version); - return pci_register_driver(&w840_driver); -} - -static void __exit w840_exit(void) -{ - pci_unregister_driver(&w840_driver); -} - -module_init(w840_init); -module_exit(w840_exit); |