diff options
Diffstat (limited to 'drivers/net/yellowfin.c')
| -rw-r--r-- | drivers/net/yellowfin.c | 1430 |
1 files changed, 0 insertions, 1430 deletions
diff --git a/drivers/net/yellowfin.c b/drivers/net/yellowfin.c deleted file mode 100644 index 3e5ac60b89ac..000000000000 --- a/drivers/net/yellowfin.c +++ /dev/null @@ -1,1430 +0,0 @@ -/* yellowfin.c: A Packet Engines G-NIC ethernet driver for linux. */ -/* - Written 1997-2001 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. - - This driver is for the Packet Engines G-NIC PCI Gigabit Ethernet adapter. - It also supports the Symbios Logic version of the same chip core. - - 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/yellowfin.html - [link no longer provides useful info -jgarzik] - -*/ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#define DRV_NAME "yellowfin" -#define DRV_VERSION "2.1" -#define DRV_RELDATE "Sep 11, 2006" - -/* 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. */ -/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ -static int max_interrupt_work = 20; -static int mtu; -#ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ -/* System-wide count of bogus-rx frames. */ -static int bogus_rx; -static int dma_ctrl = 0x004A0263; /* Constrained by errata */ -static int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */ -#elif defined(YF_NEW) /* A future perfect board :->. */ -static int dma_ctrl = 0x00CAC277; /* Override when loading module! */ -static int fifo_cfg = 0x0028; -#else -static const int dma_ctrl = 0x004A0263; /* Constrained by errata */ -static const int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */ -#endif - -/* Set the copy breakpoint for the copy-only-tiny-frames scheme. - Setting to > 1514 effectively disables this feature. */ -static int rx_copybreak; - -/* Used to pass the media type, etc. - No media types are currently defined. These exist for driver - interoperability. -*/ -#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}; - -/* Do ugly workaround for GX server chipset errata. */ -static int gx_fix; - -/* Operational parameters that are set at compile time. */ - -/* Keep the ring sizes a power of two for efficiency. - Making the Tx ring too long decreases the effectiveness of channel - bonding and packet priority. - There are no ill effects from too-large receive rings. */ -#define TX_RING_SIZE 16 -#define TX_QUEUE_SIZE 12 /* Must be > 4 && <= TX_RING_SIZE */ -#define RX_RING_SIZE 64 -#define STATUS_TOTAL_SIZE TX_RING_SIZE*sizeof(struct tx_status_words) -#define TX_TOTAL_SIZE 2*TX_RING_SIZE*sizeof(struct yellowfin_desc) -#define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct yellowfin_desc) - -/* Operational parameters that usually are not changed. */ -/* Time in jiffies before concluding the transmitter is hung. */ -#define TX_TIMEOUT (2*HZ) -#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ - -#define yellowfin_debug debug - -#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/init.h> -#include <linux/mii.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/ethtool.h> -#include <linux/crc32.h> -#include <linux/bitops.h> -#include <asm/uaccess.h> -#include <asm/processor.h> /* Processor type for cache alignment. */ -#include <asm/unaligned.h> -#include <asm/io.h> - -/* These identify the driver base version and may not be removed. */ -static const char version[] __devinitconst = - KERN_INFO DRV_NAME ".c:v1.05 1/09/2001 Written by Donald Becker <becker@scyld.com>\n" - " (unofficial 2.4.x port, " DRV_VERSION ", " DRV_RELDATE ")\n"; - -MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); -MODULE_DESCRIPTION("Packet Engines Yellowfin G-NIC Gigabit Ethernet driver"); -MODULE_LICENSE("GPL"); - -module_param(max_interrupt_work, int, 0); -module_param(mtu, int, 0); -module_param(debug, int, 0); -module_param(rx_copybreak, int, 0); -module_param_array(options, int, NULL, 0); -module_param_array(full_duplex, int, NULL, 0); -module_param(gx_fix, int, 0); -MODULE_PARM_DESC(max_interrupt_work, "G-NIC maximum events handled per interrupt"); -MODULE_PARM_DESC(mtu, "G-NIC MTU (all boards)"); -MODULE_PARM_DESC(debug, "G-NIC debug level (0-7)"); -MODULE_PARM_DESC(rx_copybreak, "G-NIC copy breakpoint for copy-only-tiny-frames"); -MODULE_PARM_DESC(options, "G-NIC: Bits 0-3: media type, bit 17: full duplex"); -MODULE_PARM_DESC(full_duplex, "G-NIC full duplex setting(s) (1)"); -MODULE_PARM_DESC(gx_fix, "G-NIC: enable GX server chipset bug workaround (0-1)"); - -/* - Theory of Operation - -I. Board Compatibility - -This device driver is designed for the Packet Engines "Yellowfin" Gigabit -Ethernet adapter. The G-NIC 64-bit PCI card is supported, as well as the -Symbios 53C885E dual function chip. - -II. Board-specific settings - -PCI bus devices are configured by the system at boot time, so no jumpers -need to be set on the board. The system BIOS preferably should assign the -PCI INTA signal to an otherwise unused system IRQ line. -Note: Kernel versions earlier than 1.3.73 do not support shared PCI -interrupt lines. - -III. Driver operation - -IIIa. Ring buffers - -The Yellowfin uses the Descriptor Based DMA Architecture specified by Apple. -This is a descriptor list scheme similar to that used by the EEPro100 and -Tulip. This driver uses two statically allocated fixed-size descriptor lists -formed into rings by a branch from the final descriptor to the beginning of -the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. - -The driver allocates full frame size skbuffs for the Rx ring buffers at -open() time and passes the skb->data field to the Yellowfin as receive data -buffers. When an incoming frame is less than RX_COPYBREAK bytes long, -a fresh skbuff is allocated and the frame is copied to the new skbuff. -When the incoming frame is larger, the skbuff is passed directly up the -protocol stack and replaced by a newly allocated skbuff. - -The RX_COPYBREAK value is chosen to trade-off the memory wasted by -using a full-sized skbuff for small frames vs. the copying costs of larger -frames. For small frames the copying cost is negligible (esp. considering -that we are pre-loading the cache with immediately useful header -information). For large frames the copying cost is non-trivial, and the -larger copy might flush the cache of useful data. - -IIIC. Synchronization - -The driver runs as two independent, single-threaded flows of control. One -is the send-packet routine, which enforces single-threaded use by the -dev->tbusy flag. The other thread is the interrupt handler, which is single -threaded by the hardware and other software. - -The send packet thread has partial control over the Tx ring and 'dev->tbusy' -flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next -queue slot is empty, it clears the tbusy flag when finished otherwise it sets -the 'yp->tx_full' flag. - -The interrupt handler has exclusive control over the Rx ring and records stats -from the Tx ring. After reaping the stats, it marks the Tx queue entry as -empty by incrementing the dirty_tx mark. Iff the 'yp->tx_full' flag is set, it -clears both the tx_full and tbusy flags. - -IV. Notes - -Thanks to Kim Stearns of Packet Engines for providing a pair of G-NIC boards. -Thanks to Bruce Faust of Digitalscape for providing both their SYM53C885 board -and an AlphaStation to verifty the Alpha port! - -IVb. References - -Yellowfin Engineering Design Specification, 4/23/97 Preliminary/Confidential -Symbios SYM53C885 PCI-SCSI/Fast Ethernet Multifunction Controller Preliminary - Data Manual v3.0 -http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html -http://cesdis.gsfc.nasa.gov/linux/misc/100mbps.html - -IVc. Errata - -See Packet Engines confidential appendix (prototype chips only). -*/ - - - -enum capability_flags { - HasMII=1, FullTxStatus=2, IsGigabit=4, HasMulticastBug=8, FullRxStatus=16, - HasMACAddrBug=32, /* Only on early revs. */ - DontUseEeprom=64, /* Don't read the MAC from the EEPROm. */ -}; - -/* The PCI I/O space extent. */ -enum { - YELLOWFIN_SIZE = 0x100, -}; - -struct pci_id_info { - const char *name; - struct match_info { - int pci, pci_mask, subsystem, subsystem_mask; - int revision, revision_mask; /* Only 8 bits. */ - } id; - int drv_flags; /* Driver use, intended as capability flags. */ -}; - -static const struct pci_id_info pci_id_tbl[] = { - {"Yellowfin G-NIC Gigabit Ethernet", { 0x07021000, 0xffffffff}, - FullTxStatus | IsGigabit | HasMulticastBug | HasMACAddrBug | DontUseEeprom}, - {"Symbios SYM83C885", { 0x07011000, 0xffffffff}, - HasMII | DontUseEeprom }, - { } -}; - -static DEFINE_PCI_DEVICE_TABLE(yellowfin_pci_tbl) = { - { 0x1000, 0x0702, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - { 0x1000, 0x0701, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, - { } -}; -MODULE_DEVICE_TABLE (pci, yellowfin_pci_tbl); - - -/* Offsets to the Yellowfin registers. Various sizes and alignments. */ -enum yellowfin_offsets { - TxCtrl=0x00, TxStatus=0x04, TxPtr=0x0C, - TxIntrSel=0x10, TxBranchSel=0x14, TxWaitSel=0x18, - RxCtrl=0x40, RxStatus=0x44, RxPtr=0x4C, - RxIntrSel=0x50, RxBranchSel=0x54, RxWaitSel=0x58, - EventStatus=0x80, IntrEnb=0x82, IntrClear=0x84, IntrStatus=0x86, - ChipRev=0x8C, DMACtrl=0x90, TxThreshold=0x94, - Cnfg=0xA0, FrameGap0=0xA2, FrameGap1=0xA4, - MII_Cmd=0xA6, MII_Addr=0xA8, MII_Wr_Data=0xAA, MII_Rd_Data=0xAC, - MII_Status=0xAE, - RxDepth=0xB8, FlowCtrl=0xBC, - AddrMode=0xD0, StnAddr=0xD2, HashTbl=0xD8, FIFOcfg=0xF8, - EEStatus=0xF0, EECtrl=0xF1, EEAddr=0xF2, EERead=0xF3, EEWrite=0xF4, - EEFeature=0xF5, -}; - -/* The Yellowfin Rx and Tx buffer descriptors. - Elements are written as 32 bit for endian portability. */ -struct yellowfin_desc { - __le32 dbdma_cmd; - __le32 addr; - __le32 branch_addr; - __le32 result_status; -}; - -struct tx_status_words { -#ifdef __BIG_ENDIAN - u16 tx_errs; - u16 tx_cnt; - u16 paused; - u16 total_tx_cnt; -#else /* Little endian chips. */ - u16 tx_cnt; - u16 tx_errs; - u16 total_tx_cnt; - u16 paused; -#endif /* __BIG_ENDIAN */ -}; - -/* Bits in yellowfin_desc.cmd */ -enum desc_cmd_bits { - CMD_TX_PKT=0x10000000, CMD_RX_BUF=0x20000000, CMD_TXSTATUS=0x30000000, - CMD_NOP=0x60000000, CMD_STOP=0x70000000, - BRANCH_ALWAYS=0x0C0000, INTR_ALWAYS=0x300000, WAIT_ALWAYS=0x030000, - BRANCH_IFTRUE=0x040000, -}; - -/* Bits in yellowfin_desc.status */ -enum desc_status_bits { RX_EOP=0x0040, }; - -/* Bits in the interrupt status/mask registers. */ -enum intr_status_bits { - IntrRxDone=0x01, IntrRxInvalid=0x02, IntrRxPCIFault=0x04,IntrRxPCIErr=0x08, - IntrTxDone=0x10, IntrTxInvalid=0x20, IntrTxPCIFault=0x40,IntrTxPCIErr=0x80, - IntrEarlyRx=0x100, IntrWakeup=0x200, }; - -#define PRIV_ALIGN 31 /* Required alignment mask */ -#define MII_CNT 4 -struct yellowfin_private { - /* Descriptor rings first for alignment. - Tx requires a second descriptor for status. */ - struct yellowfin_desc *rx_ring; - struct yellowfin_desc *tx_ring; - struct sk_buff* rx_skbuff[RX_RING_SIZE]; - struct sk_buff* tx_skbuff[TX_RING_SIZE]; - dma_addr_t rx_ring_dma; - dma_addr_t tx_ring_dma; - - struct tx_status_words *tx_status; - dma_addr_t tx_status_dma; - - struct timer_list timer; /* Media selection timer. */ - /* Frequently used and paired value: keep adjacent for cache effect. */ - int chip_id, drv_flags; - struct pci_dev *pci_dev; - unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ - unsigned int rx_buf_sz; /* Based on MTU+slack. */ - struct tx_status_words *tx_tail_desc; - unsigned int cur_tx, dirty_tx; - int tx_threshold; - unsigned int tx_full:1; /* The Tx queue is full. */ - unsigned int full_duplex:1; /* Full-duplex operation requested. */ - unsigned int duplex_lock:1; - unsigned int medialock:1; /* Do not sense media. */ - unsigned int default_port:4; /* Last dev->if_port value. */ - /* MII transceiver section. */ - int mii_cnt; /* MII device addresses. */ - u16 advertising; /* NWay media advertisement */ - unsigned char phys[MII_CNT]; /* MII device addresses, only first one used */ - spinlock_t lock; - void __iomem *base; -}; - -static int read_eeprom(void __iomem *ioaddr, int location); -static int mdio_read(void __iomem *ioaddr, int phy_id, int location); -static void mdio_write(void __iomem *ioaddr, int phy_id, int location, int value); -static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); -static int yellowfin_open(struct net_device *dev); -static void yellowfin_timer(unsigned long data); -static void yellowfin_tx_timeout(struct net_device *dev); -static int yellowfin_init_ring(struct net_device *dev); -static netdev_tx_t yellowfin_start_xmit(struct sk_buff *skb, - struct net_device *dev); -static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance); -static int yellowfin_rx(struct net_device *dev); -static void yellowfin_error(struct net_device *dev, int intr_status); -static int yellowfin_close(struct net_device *dev); -static void set_rx_mode(struct net_device *dev); -static const struct ethtool_ops ethtool_ops; - -static const struct net_device_ops netdev_ops = { - .ndo_open = yellowfin_open, - .ndo_stop = yellowfin_close, - .ndo_start_xmit = yellowfin_start_xmit, - .ndo_set_multicast_list = set_rx_mode, - .ndo_change_mtu = eth_change_mtu, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, - .ndo_do_ioctl = netdev_ioctl, - .ndo_tx_timeout = yellowfin_tx_timeout, -}; - -static int __devinit yellowfin_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct net_device *dev; - struct yellowfin_private *np; - int irq; - int chip_idx = ent->driver_data; - static int find_cnt; - void __iomem *ioaddr; - int i, option = find_cnt < MAX_UNITS ? options[find_cnt] : 0; - int drv_flags = pci_id_tbl[chip_idx].drv_flags; - void *ring_space; - dma_addr_t ring_dma; -#ifdef USE_IO_OPS - int bar = 0; -#else - int bar = 1; -#endif - -/* when built into the kernel, we only print version if device is found */ -#ifndef MODULE - static int printed_version; - if (!printed_version++) - printk(version); -#endif - - i = pci_enable_device(pdev); - if (i) return i; - - dev = alloc_etherdev(sizeof(*np)); - if (!dev) { - pr_err("cannot allocate ethernet device\n"); - return -ENOMEM; - } - SET_NETDEV_DEV(dev, &pdev->dev); - - np = netdev_priv(dev); - - if (pci_request_regions(pdev, DRV_NAME)) - goto err_out_free_netdev; - - pci_set_master (pdev); - - ioaddr = pci_iomap(pdev, bar, YELLOWFIN_SIZE); - if (!ioaddr) - goto err_out_free_res; - - irq = pdev->irq; - - if (drv_flags & DontUseEeprom) - for (i = 0; i < 6; i++) - dev->dev_addr[i] = ioread8(ioaddr + StnAddr + i); - else { - int ee_offset = (read_eeprom(ioaddr, 6) == 0xff ? 0x100 : 0); - for (i = 0; i < 6; i++) - dev->dev_addr[i] = read_eeprom(ioaddr, ee_offset + i); - } - - /* Reset the chip. */ - iowrite32(0x80000000, ioaddr + DMACtrl); - - dev->base_addr = (unsigned long)ioaddr; - dev->irq = irq; - - pci_set_drvdata(pdev, dev); - spin_lock_init(&np->lock); - - np->pci_dev = pdev; - np->chip_id = chip_idx; - np->drv_flags = drv_flags; - np->base = ioaddr; - - ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); - if (!ring_space) - goto err_out_cleardev; - np->tx_ring = ring_space; - np->tx_ring_dma = ring_dma; - - ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); - if (!ring_space) - goto err_out_unmap_tx; - np->rx_ring = ring_space; - np->rx_ring_dma = ring_dma; - - ring_space = pci_alloc_consistent(pdev, STATUS_TOTAL_SIZE, &ring_dma); - if (!ring_space) - goto err_out_unmap_rx; - np->tx_status = ring_space; - np->tx_status_dma = ring_dma; - - if (dev->mem_start) - option = dev->mem_start; - - /* The lower four bits are the media type. */ - if (option > 0) { - if (option & 0x200) - np->full_duplex = 1; - np->default_port = option & 15; - if (np->default_port) - np->medialock = 1; - } - if (find_cnt < MAX_UNITS && full_duplex[find_cnt] > 0) - np->full_duplex = 1; - - if (np->full_duplex) - np->duplex_lock = 1; - - /* The Yellowfin-specific entries in the device structure. */ - dev->netdev_ops = &netdev_ops; - SET_ETHTOOL_OPS(dev, ðtool_ops); - dev->watchdog_timeo = TX_TIMEOUT; - - if (mtu) - dev->mtu = mtu; - - i = register_netdev(dev); - if (i) - goto err_out_unmap_status; - - netdev_info(dev, "%s type %8x at %p, %pM, IRQ %d\n", - pci_id_tbl[chip_idx].name, - ioread32(ioaddr + ChipRev), ioaddr, - dev->dev_addr, irq); - - if (np->drv_flags & HasMII) { - int phy, phy_idx = 0; - for (phy = 0; phy < 32 && phy_idx < MII_CNT; phy++) { - int mii_status = mdio_read(ioaddr, phy, 1); - if (mii_status != 0xffff && mii_status != 0x0000) { - np->phys[phy_idx++] = phy; - np->advertising = mdio_read(ioaddr, phy, 4); - netdev_info(dev, "MII PHY found at address %d, status 0x%04x advertising %04x\n", - phy, mii_status, np->advertising); - } - } - np->mii_cnt = phy_idx; - } - - find_cnt++; - - return 0; - -err_out_unmap_status: - pci_free_consistent(pdev, STATUS_TOTAL_SIZE, np->tx_status, - np->tx_status_dma); -err_out_unmap_rx: - pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma); -err_out_unmap_tx: - pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma); -err_out_cleardev: - pci_set_drvdata(pdev, NULL); - pci_iounmap(pdev, ioaddr); -err_out_free_res: - pci_release_regions(pdev); -err_out_free_netdev: - free_netdev (dev); - return -ENODEV; -} - -static int __devinit read_eeprom(void __iomem *ioaddr, int location) -{ - int bogus_cnt = 10000; /* Typical 33Mhz: 1050 ticks */ - - iowrite8(location, ioaddr + EEAddr); - iowrite8(0x30 | ((location >> 8) & 7), ioaddr + EECtrl); - while ((ioread8(ioaddr + EEStatus) & 0x80) && --bogus_cnt > 0) - ; - return ioread8(ioaddr + EERead); -} - -/* MII Managemen Data I/O accesses. - These routines assume the MDIO controller is idle, and do not exit until - the command is finished. */ - -static int mdio_read(void __iomem *ioaddr, int phy_id, int location) -{ - int i; - - iowrite16((phy_id<<8) + location, ioaddr + MII_Addr); - iowrite16(1, ioaddr + MII_Cmd); - for (i = 10000; i >= 0; i--) - if ((ioread16(ioaddr + MII_Status) & 1) == 0) - break; - return ioread16(ioaddr + MII_Rd_Data); -} - -static void mdio_write(void __iomem *ioaddr, int phy_id, int location, int value) -{ - int i; - - iowrite16((phy_id<<8) + location, ioaddr + MII_Addr); - iowrite16(value, ioaddr + MII_Wr_Data); - - /* Wait for the command to finish. */ - for (i = 10000; i >= 0; i--) - if ((ioread16(ioaddr + MII_Status) & 1) == 0) - break; -} - - -static int yellowfin_open(struct net_device *dev) -{ - struct yellowfin_private *yp = netdev_priv(dev); - void __iomem *ioaddr = yp->base; - int i, ret; - - /* Reset the chip. */ - iowrite32(0x80000000, ioaddr + DMACtrl); - - ret = request_irq(dev->irq, yellowfin_interrupt, IRQF_SHARED, dev->name, dev); - if (ret) - return ret; - - if (yellowfin_debug > 1) - netdev_printk(KERN_DEBUG, dev, "%s() irq %d\n", - __func__, dev->irq); - - ret = yellowfin_init_ring(dev); - if (ret) { - free_irq(dev->irq, dev); - return ret; - } - - iowrite32(yp->rx_ring_dma, ioaddr + RxPtr); - iowrite32(yp->tx_ring_dma, ioaddr + TxPtr); - - for (i = 0; i < 6; i++) - iowrite8(dev->dev_addr[i], ioaddr + StnAddr + i); - - /* Set up various condition 'select' registers. - There are no options here. */ - iowrite32(0x00800080, ioaddr + TxIntrSel); /* Interrupt on Tx abort */ - iowrite32(0x00800080, ioaddr + TxBranchSel); /* Branch on Tx abort */ - iowrite32(0x00400040, ioaddr + TxWaitSel); /* Wait on Tx status */ - iowrite32(0x00400040, ioaddr + RxIntrSel); /* Interrupt on Rx done */ - iowrite32(0x00400040, ioaddr + RxBranchSel); /* Branch on Rx error */ - iowrite32(0x00400040, ioaddr + RxWaitSel); /* Wait on Rx done */ - - /* Initialize other registers: with so many this eventually this will - converted to an offset/value list. */ - iowrite32(dma_ctrl, ioaddr + DMACtrl); - iowrite16(fifo_cfg, ioaddr + FIFOcfg); - /* Enable automatic generation of flow control frames, period 0xffff. */ - iowrite32(0x0030FFFF, ioaddr + FlowCtrl); - - yp->tx_threshold = 32; - iowrite32(yp->tx_threshold, ioaddr + TxThreshold); - - if (dev->if_port == 0) - dev->if_port = yp->default_port; - - netif_start_queue(dev); - - /* Setting the Rx mode will start the Rx process. */ - if (yp->drv_flags & IsGigabit) { - /* We are always in full-duplex mode with gigabit! */ - yp->full_duplex = 1; - iowrite16(0x01CF, ioaddr + Cnfg); - } else { - iowrite16(0x0018, ioaddr + FrameGap0); /* 0060/4060 for non-MII 10baseT */ - iowrite16(0x1018, ioaddr + FrameGap1); - iowrite16(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg); - } - set_rx_mode(dev); - - /* Enable interrupts by setting the interrupt mask. */ - iowrite16(0x81ff, ioaddr + IntrEnb); /* See enum intr_status_bits */ - iowrite16(0x0000, ioaddr + EventStatus); /* Clear non-interrupting events */ - iowrite32(0x80008000, ioaddr + RxCtrl); /* Start Rx and Tx channels. */ - iowrite32(0x80008000, ioaddr + TxCtrl); - - if (yellowfin_debug > 2) { - netdev_printk(KERN_DEBUG, dev, "Done %s()\n", __func__); - } - - /* Set the timer to check for link beat. */ - init_timer(&yp->timer); - yp->timer.expires = jiffies + 3*HZ; - yp->timer.data = (unsigned long)dev; - yp->timer.function = yellowfin_timer; /* timer handler */ - add_timer(&yp->timer); - - return 0; -} - -static void yellowfin_timer(unsigned long data) -{ - struct net_device *dev = (struct net_device *)data; - struct yellowfin_private *yp = netdev_priv(dev); - void __iomem *ioaddr = yp->base; - int next_tick = 60*HZ; - - if (yellowfin_debug > 3) { - netdev_printk(KERN_DEBUG, dev, "Yellowfin timer tick, status %08x\n", - ioread16(ioaddr + IntrStatus)); - } - - if (yp->mii_cnt) { - int bmsr = mdio_read(ioaddr, yp->phys[0], MII_BMSR); - int lpa = mdio_read(ioaddr, yp->phys[0], MII_LPA); - int negotiated = lpa & yp->advertising; - if (yellowfin_debug > 1) - netdev_printk(KERN_DEBUG, dev, "MII #%d status register is %04x, link partner capability %04x\n", - yp->phys[0], bmsr, lpa); - - yp->full_duplex = mii_duplex(yp->duplex_lock, negotiated); - - iowrite16(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg); - - if (bmsr & BMSR_LSTATUS) - next_tick = 60*HZ; - else - next_tick = 3*HZ; - } - - yp->timer.expires = jiffies + next_tick; - add_timer(&yp->timer); -} - -static void yellowfin_tx_timeout(struct net_device *dev) -{ - struct yellowfin_private *yp = netdev_priv(dev); - void __iomem *ioaddr = yp->base; - - netdev_warn(dev, "Yellowfin transmit timed out at %d/%d Tx status %04x, Rx status %04x, resetting...\n", - yp->cur_tx, yp->dirty_tx, - ioread32(ioaddr + TxStatus), - ioread32(ioaddr + RxStatus)); - - /* Note: these should be KERN_DEBUG. */ - if (yellowfin_debug) { - int i; - pr_warning(" Rx ring %p: ", yp->rx_ring); - for (i = 0; i < RX_RING_SIZE; i++) - pr_cont(" %08x", yp->rx_ring[i].result_status); - pr_cont("\n"); - pr_warning(" Tx ring %p: ", yp->tx_ring); - for (i = 0; i < TX_RING_SIZE; i++) - pr_cont(" %04x /%08x", - yp->tx_status[i].tx_errs, - yp->tx_ring[i].result_status); - pr_cont("\n"); - } - - /* If the hardware is found to hang regularly, we will update the code - to reinitialize the chip here. */ - dev->if_port = 0; - - /* Wake the potentially-idle transmit channel. */ - iowrite32(0x10001000, yp->base + TxCtrl); - if (yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE) - netif_wake_queue (dev); /* Typical path */ - - dev->trans_start = jiffies; /* prevent tx timeout */ - dev->stats.tx_errors++; -} - -/* Initialize the Rx and Tx rings, along with various 'dev' bits. */ -static int yellowfin_init_ring(struct net_device *dev) -{ - struct yellowfin_private *yp = netdev_priv(dev); - int i, j; - - yp->tx_full = 0; - yp->cur_rx = yp->cur_tx = 0; - yp->dirty_tx = 0; - - yp->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); - - for (i = 0; i < RX_RING_SIZE; i++) { - yp->rx_ring[i].dbdma_cmd = - cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz); - yp->rx_ring[i].branch_addr = cpu_to_le32(yp->rx_ring_dma + - ((i+1)%RX_RING_SIZE)*sizeof(struct yellowfin_desc)); - } - - for (i = 0; i < RX_RING_SIZE; i++) { - struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz + 2); - yp->rx_skbuff[i] = skb; - if (skb == NULL) - break; - skb->dev = dev; /* Mark as being used by this device. */ - skb_reserve(skb, 2); /* 16 byte align the IP header. */ - yp->rx_ring[i].addr = cpu_to_le32(pci_map_single(yp->pci_dev, - skb->data, yp->rx_buf_sz, PCI_DMA_FROMDEVICE)); - } - if (i != RX_RING_SIZE) { - for (j = 0; j < i; j++) - dev_kfree_skb(yp->rx_skbuff[j]); - return -ENOMEM; - } - yp->rx_ring[i-1].dbdma_cmd = cpu_to_le32(CMD_STOP); - yp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); - -#define NO_TXSTATS -#ifdef NO_TXSTATS - /* In this mode the Tx ring needs only a single descriptor. */ - for (i = 0; i < TX_RING_SIZE; i++) { - yp->tx_skbuff[i] = NULL; - yp->tx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP); - yp->tx_ring[i].branch_addr = cpu_to_le32(yp->tx_ring_dma + - ((i+1)%TX_RING_SIZE)*sizeof(struct yellowfin_desc)); - } - /* Wrap ring */ - yp->tx_ring[--i].dbdma_cmd = cpu_to_le32(CMD_STOP | BRANCH_ALWAYS); -#else -{ - /* Tx ring needs a pair of descriptors, the second for the status. */ - for (i = 0; i < TX_RING_SIZE; i++) { - j = 2*i; - yp->tx_skbuff[i] = 0; - /* Branch on Tx error. */ - yp->tx_ring[j].dbdma_cmd = cpu_to_le32(CMD_STOP); - yp->tx_ring[j].branch_addr = cpu_to_le32(yp->tx_ring_dma + - (j+1)*sizeof(struct yellowfin_desc)); - j++; - if (yp->flags & FullTxStatus) { - yp->tx_ring[j].dbdma_cmd = - cpu_to_le32(CMD_TXSTATUS | sizeof(*yp->tx_status)); - yp->tx_ring[j].request_cnt = sizeof(*yp->tx_status); - yp->tx_ring[j].addr = cpu_to_le32(yp->tx_status_dma + - i*sizeof(struct tx_status_words)); - } else { - /* Symbios chips write only tx_errs word. */ - yp->tx_ring[j].dbdma_cmd = - cpu_to_le32(CMD_TXSTATUS | INTR_ALWAYS | 2); - yp->tx_ring[j].request_cnt = 2; - /* Om pade ummmmm... */ - yp->tx_ring[j].addr = cpu_to_le32(yp->tx_status_dma + - i*sizeof(struct tx_status_words) + - &(yp->tx_status[0].tx_errs) - - &(yp->tx_status[0])); - } - yp->tx_ring[j].branch_addr = cpu_to_le32(yp->tx_ring_dma + - ((j+1)%(2*TX_RING_SIZE))*sizeof(struct yellowfin_desc)); - } - /* Wrap ring */ - yp->tx_ring[++j].dbdma_cmd |= cpu_to_le32(BRANCH_ALWAYS | INTR_ALWAYS); -} -#endif - yp->tx_tail_desc = &yp->tx_status[0]; - return 0; -} - -static netdev_tx_t yellowfin_start_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - struct yellowfin_private *yp = netdev_priv(dev); - unsigned entry; - int len = skb->len; - - netif_stop_queue (dev); - - /* Note: Ordering is important here, set the field with the - "ownership" bit last, and only then increment cur_tx. */ - - /* Calculate the next Tx descriptor entry. */ - entry = yp->cur_tx % TX_RING_SIZE; - - if (gx_fix) { /* Note: only works for paddable protocols e.g. IP. */ - int cacheline_end = ((unsigned long)skb->data + skb->len) % 32; - /* Fix GX chipset errata. */ - if (cacheline_end > 24 || cacheline_end == 0) { - len = skb->len + 32 - cacheline_end + 1; - if (skb_padto(skb, len)) { - yp->tx_skbuff[entry] = NULL; - netif_wake_queue(dev); - return NETDEV_TX_OK; - } - } - } - yp->tx_skbuff[entry] = skb; - -#ifdef NO_TXSTATS - yp->tx_ring[entry].addr = cpu_to_le32(pci_map_single(yp->pci_dev, - skb->data, len, PCI_DMA_TODEVICE)); - yp->tx_ring[entry].result_status = 0; - if (entry >= TX_RING_SIZE-1) { - /* New stop command. */ - yp->tx_ring[0].dbdma_cmd = cpu_to_le32(CMD_STOP); - yp->tx_ring[TX_RING_SIZE-1].dbdma_cmd = - cpu_to_le32(CMD_TX_PKT|BRANCH_ALWAYS | len); - } else { - yp->tx_ring[entry+1].dbdma_cmd = cpu_to_le32(CMD_STOP); - yp->tx_ring[entry].dbdma_cmd = - cpu_to_le32(CMD_TX_PKT | BRANCH_IFTRUE | len); - } - yp->cur_tx++; -#else - yp->tx_ring[entry<<1].request_cnt = len; - yp->tx_ring[entry<<1].addr = cpu_to_le32(pci_map_single(yp->pci_dev, - skb->data, len, PCI_DMA_TODEVICE)); - /* The input_last (status-write) command is constant, but we must - rewrite the subsequent 'stop' command. */ - - yp->cur_tx++; - { - unsigned next_entry = yp->cur_tx % TX_RING_SIZE; - yp->tx_ring[next_entry<<1].dbdma_cmd = cpu_to_le32(CMD_STOP); - } - /* Final step -- overwrite the old 'stop' command. */ - - yp->tx_ring[entry<<1].dbdma_cmd = - cpu_to_le32( ((entry % 6) == 0 ? CMD_TX_PKT|INTR_ALWAYS|BRANCH_IFTRUE : - CMD_TX_PKT | BRANCH_IFTRUE) | len); -#endif - - /* Non-x86 Todo: explicitly flush cache lines here. */ - - /* Wake the potentially-idle transmit channel. */ - iowrite32(0x10001000, yp->base + TxCtrl); - - if (yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE) - netif_start_queue (dev); /* Typical path */ - else - yp->tx_full = 1; - - if (yellowfin_debug > 4) { - netdev_printk(KERN_DEBUG, dev, "Yellowfin transmit frame #%d queued in slot %d\n", - yp->cur_tx, entry); - } - return NETDEV_TX_OK; -} - -/* The interrupt handler does all of the Rx thread work and cleans up - after the Tx thread. */ -static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance) -{ - struct net_device *dev = dev_instance; - struct yellowfin_private *yp; - void __iomem *ioaddr; - int boguscnt = max_interrupt_work; - unsigned int handled = 0; - - yp = netdev_priv(dev); - ioaddr = yp->base; - - spin_lock (&yp->lock); - - do { - u16 intr_status = ioread16(ioaddr + IntrClear); - - if (yellowfin_debug > 4) - netdev_printk(KERN_DEBUG, dev, "Yellowfin interrupt, status %04x\n", - intr_status); - - if (intr_status == 0) - break; - handled = 1; - - if (intr_status & (IntrRxDone | IntrEarlyRx)) { - yellowfin_rx(dev); - iowrite32(0x10001000, ioaddr + RxCtrl); /* Wake Rx engine. */ - } - -#ifdef NO_TXSTATS - for (; yp->cur_tx - yp->dirty_tx > 0; yp->dirty_tx++) { - int entry = yp->dirty_tx % TX_RING_SIZE; - struct sk_buff *skb; - - if (yp->tx_ring[entry].result_status == 0) - break; - skb = yp->tx_skbuff[entry]; - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - /* Free the original skb. */ - pci_unmap_single(yp->pci_dev, le32_to_cpu(yp->tx_ring[entry].addr), - skb->len, PCI_DMA_TODEVICE); - dev_kfree_skb_irq(skb); - yp->tx_skbuff[entry] = NULL; - } - if (yp->tx_full && - yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE - 4) { - /* The ring is no longer full, clear tbusy. */ - yp->tx_full = 0; - netif_wake_queue(dev); - } -#else - if ((intr_status & IntrTxDone) || (yp->tx_tail_desc->tx_errs)) { - unsigned dirty_tx = yp->dirty_tx; - - for (dirty_tx = yp->dirty_tx; yp->cur_tx - dirty_tx > 0; - dirty_tx++) { - /* Todo: optimize this. */ - int entry = dirty_tx % TX_RING_SIZE; - u16 tx_errs = yp->tx_status[entry].tx_errs; - struct sk_buff *skb; - -#ifndef final_version - if (yellowfin_debug > 5) - netdev_printk(KERN_DEBUG, dev, "Tx queue %d check, Tx status %04x %04x %04x %04x\n", - entry, - yp->tx_status[entry].tx_cnt, - yp->tx_status[entry].tx_errs, - yp->tx_status[entry].total_tx_cnt, - yp->tx_status[entry].paused); -#endif - if (tx_errs == 0) - break; /* It still hasn't been Txed */ - skb = yp->tx_skbuff[entry]; - if (tx_errs & 0xF810) { - /* There was an major error, log it. */ -#ifndef final_version - if (yellowfin_debug > 1) - netdev_printk(KERN_DEBUG, dev, "Transmit error, Tx status %04x\n", - tx_errs); -#endif - dev->stats.tx_errors++; - if (tx_errs & 0xF800) dev->stats.tx_aborted_errors++; - if (tx_errs & 0x0800) dev->stats.tx_carrier_errors++; - if (tx_errs & 0x2000) dev->stats.tx_window_errors++; - if (tx_errs & 0x8000) dev->stats.tx_fifo_errors++; - } else { -#ifndef final_version - if (yellowfin_debug > 4) - netdev_printk(KERN_DEBUG, dev, "Normal transmit, Tx status %04x\n", - tx_errs); -#endif - dev->stats.tx_bytes += skb->len; - dev->stats.collisions += tx_errs & 15; - dev->stats.tx_packets++; - } - /* Free the original skb. */ - pci_unmap_single(yp->pci_dev, - yp->tx_ring[entry<<1].addr, skb->len, - PCI_DMA_TODEVICE); - dev_kfree_skb_irq(skb); - yp->tx_skbuff[entry] = 0; - /* Mark status as empty. */ - yp->tx_status[entry].tx_errs = 0; - } - -#ifndef final_version - if (yp->cur_tx - dirty_tx > TX_RING_SIZE) { - netdev_err(dev, "Out-of-sync dirty pointer, %d vs. %d, full=%d\n", - dirty_tx, yp->cur_tx, yp->tx_full); - dirty_tx += TX_RING_SIZE; - } -#endif - - if (yp->tx_full && - yp->cur_tx - dirty_tx < TX_QUEUE_SIZE - 2) { - /* The ring is no longer full, clear tbusy. */ - yp->tx_full = 0; - netif_wake_queue(dev); - } - - yp->dirty_tx = dirty_tx; - yp->tx_tail_desc = &yp->tx_status[dirty_tx % TX_RING_SIZE]; - } -#endif - - /* Log errors and other uncommon events. */ - if (intr_status & 0x2ee) /* Abnormal error summary. */ - yellowfin_error(dev, intr_status); - - if (--boguscnt < 0) { - netdev_warn(dev, "Too much work at interrupt, status=%#04x\n", - intr_status); - break; - } - } while (1); - - if (yellowfin_debug > 3) - netdev_printk(KERN_DEBUG, dev, "exiting interrupt, status=%#04x\n", - ioread16(ioaddr + IntrStatus)); - - spin_unlock (&yp->lock); - return IRQ_RETVAL(handled); -} - -/* This routine is logically part of the interrupt handler, but separated - for clarity and better register allocation. */ -static int yellowfin_rx(struct net_device *dev) -{ - struct yellowfin_private *yp = netdev_priv(dev); - int entry = yp->cur_rx % RX_RING_SIZE; - int boguscnt = yp->dirty_rx + RX_RING_SIZE - yp->cur_rx; - - if (yellowfin_debug > 4) { - printk(KERN_DEBUG " In yellowfin_rx(), entry %d status %08x\n", - entry, yp->rx_ring[entry].result_status); - printk(KERN_DEBUG " #%d desc. %08x %08x %08x\n", - entry, yp->rx_ring[entry].dbdma_cmd, yp->rx_ring[entry].addr, - yp->rx_ring[entry].result_status); - } - - /* If EOP is set on the next entry, it's a new packet. Send it up. */ - while (1) { - struct yellowfin_desc *desc = &yp->rx_ring[entry]; - struct sk_buff *rx_skb = yp->rx_skbuff[entry]; - s16 frame_status; - u16 desc_status; - int data_size; - u8 *buf_addr; - - if(!desc->result_status) - break; - pci_dma_sync_single_for_cpu(yp->pci_dev, le32_to_cpu(desc->addr), - yp->rx_buf_sz, PCI_DMA_FROMDEVICE); - desc_status = le32_to_cpu(desc->result_status) >> 16; - buf_addr = rx_skb->data; - data_size = (le32_to_cpu(desc->dbdma_cmd) - - le32_to_cpu(desc->result_status)) & 0xffff; - frame_status = get_unaligned_le16(&(buf_addr[data_size - 2])); - if (yellowfin_debug > 4) - printk(KERN_DEBUG " %s() status was %04x\n", - __func__, frame_status); - if (--boguscnt < 0) - break; - if ( ! (desc_status & RX_EOP)) { - if (data_size != 0) - netdev_warn(dev, "Oversized Ethernet frame spanned multiple buffers, status %04x, data_size %d!\n", - desc_status, data_size); - dev->stats.rx_length_errors++; - } else if ((yp->drv_flags & IsGigabit) && (frame_status & 0x0038)) { - /* There was a error. */ - if (yellowfin_debug > 3) - printk(KERN_DEBUG " %s() Rx error was %04x\n", - __func__, frame_status); - dev->stats.rx_errors++; - if (frame_status & 0x0060) dev->stats.rx_length_errors++; - if (frame_status & 0x0008) dev->stats.rx_frame_errors++; - if (frame_status & 0x0010) dev->stats.rx_crc_errors++; - if (frame_status < 0) dev->stats.rx_dropped++; - } else if ( !(yp->drv_flags & IsGigabit) && - ((buf_addr[data_size-1] & 0x85) || buf_addr[data_size-2] & 0xC0)) { - u8 status1 = buf_addr[data_size-2]; - u8 status2 = buf_addr[data_size-1]; - dev->stats.rx_errors++; - if (status1 & 0xC0) dev->stats.rx_length_errors++; - if (status2 & 0x03) dev->stats.rx_frame_errors++; - if (status2 & 0x04) dev->stats.rx_crc_errors++; - if (status2 & 0x80) dev->stats.rx_dropped++; -#ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ - } else if ((yp->flags & HasMACAddrBug) && - memcmp(le32_to_cpu(yp->rx_ring_dma + - entry*sizeof(struct yellowfin_desc)), - dev->dev_addr, 6) != 0 && - memcmp(le32_to_cpu(yp->rx_ring_dma + - entry*sizeof(struct yellowfin_desc)), - "\377\377\377\377\377\377", 6) != 0) { - if (bogus_rx++ == 0) - netdev_warn(dev, "Bad frame to %pM\n", - buf_addr); -#endif - } else { - struct sk_buff *skb; - int pkt_len = data_size - - (yp->chip_id ? 7 : 8 + buf_addr[data_size - 8]); - /* To verify: Yellowfin Length should omit the CRC! */ - -#ifndef final_version - if (yellowfin_debug > 4) - printk(KERN_DEBUG " %s() normal Rx pkt length %d of %d, bogus_cnt %d\n", - __func__, pkt_len, data_size, boguscnt); -#endif - /* Check if the packet is long enough to just pass up the skbuff - without copying to a properly sized skbuff. */ - if (pkt_len > rx_copybreak) { - skb_put(skb = rx_skb, pkt_len); - pci_unmap_single(yp->pci_dev, - le32_to_cpu(yp->rx_ring[entry].addr), - yp->rx_buf_sz, - PCI_DMA_FROMDEVICE); - yp->rx_skbuff[entry] = NULL; - } else { - skb = dev_alloc_skb(pkt_len + 2); - if (skb == NULL) - break; - skb_reserve(skb, 2); /* 16 byte align the IP header */ - skb_copy_to_linear_data(skb, rx_skb->data, pkt_len); - skb_put(skb, pkt_len); - pci_dma_sync_single_for_device(yp->pci_dev, - le32_to_cpu(desc->addr), - yp->rx_buf_sz, - PCI_DMA_FROMDEVICE); - } - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - dev->stats.rx_packets++; - dev->stats.rx_bytes += pkt_len; - } - entry = (++yp->cur_rx) % RX_RING_SIZE; - } - - /* Refill the Rx ring buffers. */ - for (; yp->cur_rx - yp->dirty_rx > 0; yp->dirty_rx++) { - entry = yp->dirty_rx % RX_RING_SIZE; - if (yp->rx_skbuff[entry] == NULL) { - struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz + 2); - if (skb == NULL) - break; /* Better luck next round. */ - yp->rx_skbuff[entry] = skb; - skb->dev = dev; /* Mark as being used by this device. */ - skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ - yp->rx_ring[entry].addr = cpu_to_le32(pci_map_single(yp->pci_dev, - skb->data, yp->rx_buf_sz, PCI_DMA_FROMDEVICE)); - } - yp->rx_ring[entry].dbdma_cmd = cpu_to_le32(CMD_STOP); - yp->rx_ring[entry].result_status = 0; /* Clear complete bit. */ - if (entry != 0) - yp->rx_ring[entry - 1].dbdma_cmd = - cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz); - else - yp->rx_ring[RX_RING_SIZE - 1].dbdma_cmd = - cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | BRANCH_ALWAYS - | yp->rx_buf_sz); - } - - return 0; -} - -static void yellowfin_error(struct net_device *dev, int intr_status) -{ - netdev_err(dev, "Something Wicked happened! %04x\n", intr_status); - /* Hmmmmm, it's not clear what to do here. */ - if (intr_status & (IntrTxPCIErr | IntrTxPCIFault)) - dev->stats.tx_errors++; - if (intr_status & (IntrRxPCIErr | IntrRxPCIFault)) - dev->stats.rx_errors++; -} - -static int yellowfin_close(struct net_device *dev) -{ - struct yellowfin_private *yp = netdev_priv(dev); - void __iomem *ioaddr = yp->base; - int i; - - netif_stop_queue (dev); - - if (yellowfin_debug > 1) { - netdev_printk(KERN_DEBUG, dev, "Shutting down ethercard, status was Tx %04x Rx %04x Int %02x\n", - ioread16(ioaddr + TxStatus), - ioread16(ioaddr + RxStatus), - ioread16(ioaddr + IntrStatus)); - netdev_printk(KERN_DEBUG, dev, "Queue pointers were Tx %d / %d, Rx %d / %d\n", - yp->cur_tx, yp->dirty_tx, - yp->cur_rx, yp->dirty_rx); - } - - /* Disable interrupts by clearing the interrupt mask. */ - iowrite16(0x0000, ioaddr + IntrEnb); - - /* Stop the chip's Tx and Rx processes. */ - iowrite32(0x80000000, ioaddr + RxCtrl); - iowrite32(0x80000000, ioaddr + TxCtrl); - - del_timer(&yp->timer); - -#if defined(__i386__) - if (yellowfin_debug > 2) { - printk(KERN_DEBUG " Tx ring at %08llx:\n", - (unsigned long long)yp->tx_ring_dma); - for (i = 0; i < TX_RING_SIZE*2; i++) - printk(KERN_DEBUG " %c #%d desc. %08x %08x %08x %08x\n", - ioread32(ioaddr + TxPtr) == (long)&yp->tx_ring[i] ? '>' : ' ', - i, yp->tx_ring[i].dbdma_cmd, yp->tx_ring[i].addr, - yp->tx_ring[i].branch_addr, yp->tx_ring[i].result_status); - printk(KERN_DEBUG " Tx status %p:\n", yp->tx_status); - for (i = 0; i < TX_RING_SIZE; i++) - printk(KERN_DEBUG " #%d status %04x %04x %04x %04x\n", - i, yp->tx_status[i].tx_cnt, yp->tx_status[i].tx_errs, - yp->tx_status[i].total_tx_cnt, yp->tx_status[i].paused); - - printk(KERN_DEBUG " Rx ring %08llx:\n", - (unsigned long long)yp->rx_ring_dma); - for (i = 0; i < RX_RING_SIZE; i++) { - printk(KERN_DEBUG " %c #%d desc. %08x %08x %08x\n", - ioread32(ioaddr + RxPtr) == (long)&yp->rx_ring[i] ? '>' : ' ', - i, yp->rx_ring[i].dbdma_cmd, yp->rx_ring[i].addr, - yp->rx_ring[i].result_status); - if (yellowfin_debug > 6) { - if (get_unaligned((u8*)yp->rx_ring[i].addr) != 0x69) { - int j; - - printk(KERN_DEBUG); - for (j = 0; j < 0x50; j++) - pr_cont(" %04x", - get_unaligned(((u16*)yp->rx_ring[i].addr) + j)); - pr_cont("\n"); - } - } - } - } -#endif /* __i386__ debugging only */ - - free_irq(dev->irq, dev); - - /* Free all the skbuffs in the Rx queue. */ - for (i = 0; i < RX_RING_SIZE; i++) { - yp->rx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP); - yp->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ - if (yp->rx_skbuff[i]) { - dev_kfree_skb(yp->rx_skbuff[i]); - } - yp->rx_skbuff[i] = NULL; - } - for (i = 0; i < TX_RING_SIZE; i++) { - if (yp->tx_skbuff[i]) - dev_kfree_skb(yp->tx_skbuff[i]); - yp->tx_skbuff[i] = NULL; - } - -#ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */ - if (yellowfin_debug > 0) { - netdev_printk(KERN_DEBUG, dev, "Received %d frames that we should not have\n", - bogus_rx); - } -#endif - - return 0; -} - -/* Set or clear the multicast filter for this adaptor. */ - -static void set_rx_mode(struct net_device *dev) -{ - struct yellowfin_private *yp = netdev_priv(dev); - void __iomem *ioaddr = yp->base; - u16 cfg_value = ioread16(ioaddr + Cnfg); - - /* Stop the Rx process to change any value. */ - iowrite16(cfg_value & ~0x1000, ioaddr + Cnfg); - if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ - iowrite16(0x000F, ioaddr + AddrMode); - } else if ((netdev_mc_count(dev) > 64) || - (dev->flags & IFF_ALLMULTI)) { - /* Too many to filter well, or accept all multicasts. */ - iowrite16(0x000B, ioaddr + AddrMode); - } else if (!netdev_mc_empty(dev)) { /* Must use the multicast hash table. */ - struct netdev_hw_addr *ha; - u16 hash_table[4]; - int i; - - memset(hash_table, 0, sizeof(hash_table)); - netdev_for_each_mc_addr(ha, dev) { - unsigned int bit; - - /* Due to a bug in the early chip versions, multiple filter - slots must be set for each address. */ - if (yp->drv_flags & HasMulticastBug) { - bit = (ether_crc_le(3, ha->addr) >> 3) & 0x3f; - hash_table[bit >> 4] |= (1 << bit); - bit = (ether_crc_le(4, ha->addr) >> 3) & 0x3f; - hash_table[bit >> 4] |= (1 << bit); - bit = (ether_crc_le(5, ha->addr) >> 3) & 0x3f; - hash_table[bit >> 4] |= (1 << bit); - } - bit = (ether_crc_le(6, ha->addr) >> 3) & 0x3f; - hash_table[bit >> 4] |= (1 << bit); - } - /* Copy the hash table to the chip. */ - for (i = 0; i < 4; i++) - iowrite16(hash_table[i], ioaddr + HashTbl + i*2); - iowrite16(0x0003, ioaddr + AddrMode); - } else { /* Normal, unicast/broadcast-only mode. */ - iowrite16(0x0001, ioaddr + AddrMode); - } - /* Restart the Rx process. */ - iowrite16(cfg_value | 0x1000, ioaddr + Cnfg); -} - -static void yellowfin_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) -{ - struct yellowfin_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 const struct ethtool_ops ethtool_ops = { - .get_drvinfo = yellowfin_get_drvinfo -}; - -static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct yellowfin_private *np = netdev_priv(dev); - void __iomem *ioaddr = np->base; - struct mii_ioctl_data *data = if_mii(rq); - - switch(cmd) { - case SIOCGMIIPHY: /* Get address of MII PHY in use. */ - data->phy_id = np->phys[0] & 0x1f; - /* Fall Through */ - - case SIOCGMIIREG: /* Read MII PHY register. */ - data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f, data->reg_num & 0x1f); - return 0; - - case SIOCSMIIREG: /* Write MII PHY register. */ - if (data->phy_id == np->phys[0]) { - u16 value = data->val_in; - switch (data->reg_num) { - case 0: - /* Check for autonegotiation on or reset. */ - np->medialock = (value & 0x9000) ? 0 : 1; - if (np->medialock) - np->full_duplex = (value & 0x0100) ? 1 : 0; - break; - case 4: np->advertising = value; break; - } - /* Perhaps check_duplex(dev), depending on chip semantics. */ - } - mdio_write(ioaddr, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in); - return 0; - default: - return -EOPNOTSUPP; - } -} - - -static void __devexit yellowfin_remove_one (struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct yellowfin_private *np; - - BUG_ON(!dev); - np = netdev_priv(dev); - - pci_free_consistent(pdev, STATUS_TOTAL_SIZE, np->tx_status, - np->tx_status_dma); - pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma); - pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma); - unregister_netdev (dev); - - pci_iounmap(pdev, np->base); - - pci_release_regions (pdev); - - free_netdev (dev); - pci_set_drvdata(pdev, NULL); -} - - -static struct pci_driver yellowfin_driver = { - .name = DRV_NAME, - .id_table = yellowfin_pci_tbl, - .probe = yellowfin_init_one, - .remove = __devexit_p(yellowfin_remove_one), -}; - - -static int __init yellowfin_init (void) -{ -/* when a module, this is printed whether or not devices are found in probe */ -#ifdef MODULE - printk(version); -#endif - return pci_register_driver(&yellowfin_driver); -} - - -static void __exit yellowfin_cleanup (void) -{ - pci_unregister_driver (&yellowfin_driver); -} - - -module_init(yellowfin_init); -module_exit(yellowfin_cleanup); |