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Diffstat (limited to 'drivers/net/yellowfin.c')
-rw-r--r--drivers/net/yellowfin.c1430
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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, &ethtool_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);