+++ /dev/null
-/*
- Written 1997-1998 by Donald Becker.
-
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
-
- This driver is for the 3Com ISA EtherLink XL "Corkscrew" 3c515 ethercard.
-
- The author may be reached as becker@scyld.com, or C/O
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
-
-
- 2000/2/2- Added support for kernel-level ISAPnP
- by Stephen Frost <sfrost@snowman.net> and Alessandro Zummo
- Cleaned up for 2.3.x/softnet by Jeff Garzik and Alan Cox.
-
- 2001/11/17 - Added ethtool support (jgarzik)
-
- 2002/10/28 - Locking updates for 2.5 (alan@lxorguk.ukuu.org.uk)
-
-*/
-
-#define DRV_NAME "3c515"
-
-#define CORKSCREW 1
-
-/* "Knobs" that adjust features and parameters. */
-/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
- Setting to > 1512 effectively disables this feature. */
-static int rx_copybreak = 200;
-
-/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
-static int max_interrupt_work = 20;
-
-/* Enable the automatic media selection code -- usually set. */
-#define AUTOMEDIA 1
-
-/* Allow the use of fragment bus master transfers instead of only
- programmed-I/O for Vortex cards. Full-bus-master transfers are always
- enabled by default on Boomerang cards. If VORTEX_BUS_MASTER is defined,
- the feature may be turned on using 'options'. */
-#define VORTEX_BUS_MASTER
-
-/* A few values that may be tweaked. */
-/* Keep the ring sizes a power of two for efficiency. */
-#define TX_RING_SIZE 16
-#define RX_RING_SIZE 16
-#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */
-
-#include <linux/module.h>
-#include <linux/isapnp.h>
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/in.h>
-#include <linux/ioport.h>
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-#include <linux/interrupt.h>
-#include <linux/timer.h>
-#include <linux/ethtool.h>
-#include <linux/bitops.h>
-#include <linux/uaccess.h>
-
-#include <net/Space.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-
-#define NEW_MULTICAST
-#include <linux/delay.h>
-
-#define MAX_UNITS 8
-
-MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
-MODULE_DESCRIPTION("3Com 3c515 Corkscrew driver");
-MODULE_LICENSE("GPL");
-
-/* "Knobs" for adjusting internal parameters. */
-/* Put out somewhat more debugging messages. (0 - no msg, 1 minimal msgs). */
-#define DRIVER_DEBUG 1
-/* Some values here only for performance evaluation and path-coverage
- debugging. */
-static int rx_nocopy, rx_copy, queued_packet;
-
-/* Number of times to check to see if the Tx FIFO has space, used in some
- limited cases. */
-#define WAIT_TX_AVAIL 200
-
-/* Operational parameter that usually are not changed. */
-#define TX_TIMEOUT ((4*HZ)/10) /* Time in jiffies before concluding Tx hung */
-
-/* The size here is somewhat misleading: the Corkscrew also uses the ISA
- aliased registers at <base>+0x400.
- */
-#define CORKSCREW_TOTAL_SIZE 0x20
-
-#ifdef DRIVER_DEBUG
-static int corkscrew_debug = DRIVER_DEBUG;
-#else
-static int corkscrew_debug = 1;
-#endif
-
-#define CORKSCREW_ID 10
-
-/*
- Theory of Operation
-
-I. Board Compatibility
-
-This device driver is designed for the 3Com 3c515 ISA Fast EtherLink XL,
-3Com's ISA bus adapter for Fast Ethernet. Due to the unique I/O port layout,
-it's not practical to integrate this driver with the other EtherLink drivers.
-
-II. Board-specific settings
-
-The Corkscrew has an EEPROM for configuration, but no special settings are
-needed for Linux.
-
-III. Driver operation
-
-The 3c515 series use an interface that's very similar to the 3c900 "Boomerang"
-PCI cards, with the bus master interface extensively modified to work with
-the ISA bus.
-
-The card is capable of full-bus-master transfers with separate
-lists of transmit and receive descriptors, similar to the AMD LANCE/PCnet,
-DEC Tulip and Intel Speedo3.
-
-This driver uses a "RX_COPYBREAK" scheme rather than a fixed intermediate
-receive buffer. This scheme allocates full-sized skbuffs as receive
-buffers. The value RX_COPYBREAK is used as the copying breakpoint: it is
-chosen to trade-off the memory wasted by passing the full-sized skbuff to
-the queue layer for all frames vs. the copying cost of copying a frame to a
-correctly-sized skbuff.
-
-
-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 netif
-layer. The other thread is the interrupt handler, which is single
-threaded by the hardware and other software.
-
-IV. Notes
-
-Thanks to Terry Murphy of 3Com for providing documentation and a development
-board.
-
-The names "Vortex", "Boomerang" and "Corkscrew" are the internal 3Com
-project names. I use these names to eliminate confusion -- 3Com product
-numbers and names are very similar and often confused.
-
-The new chips support both ethernet (1.5K) and FDDI (4.5K) frame sizes!
-This driver only supports ethernet frames because of the recent MTU limit
-of 1.5K, but the changes to support 4.5K are minimal.
-*/
-
-/* Operational definitions.
- These are not used by other compilation units and thus are not
- exported in a ".h" file.
-
- First the windows. There are eight register windows, with the command
- and status registers available in each.
- */
-#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
-#define EL3_CMD 0x0e
-#define EL3_STATUS 0x0e
-
-/* The top five bits written to EL3_CMD are a command, the lower
- 11 bits are the parameter, if applicable.
- Note that 11 parameters bits was fine for ethernet, but the new chips
- can handle FDDI length frames (~4500 octets) and now parameters count
- 32-bit 'Dwords' rather than octets. */
-
-enum corkscrew_cmd {
- TotalReset = 0 << 11, SelectWindow = 1 << 11, StartCoax = 2 << 11,
- RxDisable = 3 << 11, RxEnable = 4 << 11, RxReset = 5 << 11,
- UpStall = 6 << 11, UpUnstall = (6 << 11) + 1, DownStall = (6 << 11) + 2,
- DownUnstall = (6 << 11) + 3, RxDiscard = 8 << 11, TxEnable = 9 << 11,
- TxDisable = 10 << 11, TxReset = 11 << 11, FakeIntr = 12 << 11,
- AckIntr = 13 << 11, SetIntrEnb = 14 << 11, SetStatusEnb = 15 << 11,
- SetRxFilter = 16 << 11, SetRxThreshold = 17 << 11,
- SetTxThreshold = 18 << 11, SetTxStart = 19 << 11, StartDMAUp = 20 << 11,
- StartDMADown = (20 << 11) + 1, StatsEnable = 21 << 11,
- StatsDisable = 22 << 11, StopCoax = 23 << 11,
-};
-
-/* The SetRxFilter command accepts the following classes: */
-enum RxFilter {
- RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
-};
-
-/* Bits in the general status register. */
-enum corkscrew_status {
- IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
- TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
- IntReq = 0x0040, StatsFull = 0x0080,
- DMADone = 1 << 8, DownComplete = 1 << 9, UpComplete = 1 << 10,
- DMAInProgress = 1 << 11, /* DMA controller is still busy. */
- CmdInProgress = 1 << 12, /* EL3_CMD is still busy. */
-};
-
-/* Register window 1 offsets, the window used in normal operation.
- On the Corkscrew this window is always mapped at offsets 0x10-0x1f. */
-enum Window1 {
- TX_FIFO = 0x10, RX_FIFO = 0x10, RxErrors = 0x14,
- RxStatus = 0x18, Timer = 0x1A, TxStatus = 0x1B,
- TxFree = 0x1C, /* Remaining free bytes in Tx buffer. */
-};
-enum Window0 {
- Wn0IRQ = 0x08,
-#if defined(CORKSCREW)
- Wn0EepromCmd = 0x200A, /* Corkscrew EEPROM command register. */
- Wn0EepromData = 0x200C, /* Corkscrew EEPROM results register. */
-#else
- Wn0EepromCmd = 10, /* Window 0: EEPROM command register. */
- Wn0EepromData = 12, /* Window 0: EEPROM results register. */
-#endif
-};
-enum Win0_EEPROM_bits {
- EEPROM_Read = 0x80, EEPROM_WRITE = 0x40, EEPROM_ERASE = 0xC0,
- EEPROM_EWENB = 0x30, /* Enable erasing/writing for 10 msec. */
- EEPROM_EWDIS = 0x00, /* Disable EWENB before 10 msec timeout. */
-};
-
-/* EEPROM locations. */
-enum eeprom_offset {
- PhysAddr01 = 0, PhysAddr23 = 1, PhysAddr45 = 2, ModelID = 3,
- EtherLink3ID = 7,
-};
-
-enum Window3 { /* Window 3: MAC/config bits. */
- Wn3_Config = 0, Wn3_MAC_Ctrl = 6, Wn3_Options = 8,
-};
-enum wn3_config {
- Ram_size = 7,
- Ram_width = 8,
- Ram_speed = 0x30,
- Rom_size = 0xc0,
- Ram_split_shift = 16,
- Ram_split = 3 << Ram_split_shift,
- Xcvr_shift = 20,
- Xcvr = 7 << Xcvr_shift,
- Autoselect = 0x1000000,
-};
-
-enum Window4 {
- Wn4_NetDiag = 6, Wn4_Media = 10, /* Window 4: Xcvr/media bits. */
-};
-enum Win4_Media_bits {
- Media_SQE = 0x0008, /* Enable SQE error counting for AUI. */
- Media_10TP = 0x00C0, /* Enable link beat and jabber for 10baseT. */
- Media_Lnk = 0x0080, /* Enable just link beat for 100TX/100FX. */
- Media_LnkBeat = 0x0800,
-};
-enum Window7 { /* Window 7: Bus Master control. */
- Wn7_MasterAddr = 0, Wn7_MasterLen = 6, Wn7_MasterStatus = 12,
-};
-
-/* Boomerang-style bus master control registers. Note ISA aliases! */
-enum MasterCtrl {
- PktStatus = 0x400, DownListPtr = 0x404, FragAddr = 0x408, FragLen =
- 0x40c,
- TxFreeThreshold = 0x40f, UpPktStatus = 0x410, UpListPtr = 0x418,
-};
-
-/* The Rx and Tx descriptor lists.
- Caution Alpha hackers: these types are 32 bits! Note also the 8 byte
- alignment contraint on tx_ring[] and rx_ring[]. */
-struct boom_rx_desc {
- u32 next;
- s32 status;
- u32 addr;
- s32 length;
-};
-
-/* Values for the Rx status entry. */
-enum rx_desc_status {
- RxDComplete = 0x00008000, RxDError = 0x4000,
- /* See boomerang_rx() for actual error bits */
-};
-
-struct boom_tx_desc {
- u32 next;
- s32 status;
- u32 addr;
- s32 length;
-};
-
-struct corkscrew_private {
- const char *product_name;
- struct list_head list;
- struct net_device *our_dev;
- /* The Rx and Tx rings are here to keep them quad-word-aligned. */
- struct boom_rx_desc rx_ring[RX_RING_SIZE];
- struct boom_tx_desc tx_ring[TX_RING_SIZE];
- /* The addresses of transmit- and receive-in-place skbuffs. */
- struct sk_buff *rx_skbuff[RX_RING_SIZE];
- struct sk_buff *tx_skbuff[TX_RING_SIZE];
- unsigned int cur_rx, cur_tx; /* The next free ring entry */
- unsigned int dirty_rx, dirty_tx;/* The ring entries to be free()ed. */
- struct sk_buff *tx_skb; /* Packet being eaten by bus master ctrl. */
- struct timer_list timer; /* Media selection timer. */
- int capabilities ; /* Adapter capabilities word. */
- int options; /* User-settable misc. driver options. */
- int last_rx_packets; /* For media autoselection. */
- unsigned int available_media:8, /* From Wn3_Options */
- media_override:3, /* Passed-in media type. */
- default_media:3, /* Read from the EEPROM. */
- full_duplex:1, autoselect:1, bus_master:1, /* Vortex can only do a fragment bus-m. */
- full_bus_master_tx:1, full_bus_master_rx:1, /* Boomerang */
- tx_full:1;
- spinlock_t lock;
- struct device *dev;
-};
-
-/* The action to take with a media selection timer tick.
- Note that we deviate from the 3Com order by checking 10base2 before AUI.
- */
-enum xcvr_types {
- XCVR_10baseT = 0, XCVR_AUI, XCVR_10baseTOnly, XCVR_10base2, XCVR_100baseTx,
- XCVR_100baseFx, XCVR_MII = 6, XCVR_Default = 8,
-};
-
-static struct media_table {
- char *name;
- unsigned int media_bits:16, /* Bits to set in Wn4_Media register. */
- mask:8, /* The transceiver-present bit in Wn3_Config. */
- next:8; /* The media type to try next. */
- short wait; /* Time before we check media status. */
-} media_tbl[] = {
- { "10baseT", Media_10TP, 0x08, XCVR_10base2, (14 * HZ) / 10 },
- { "10Mbs AUI", Media_SQE, 0x20, XCVR_Default, (1 * HZ) / 10},
- { "undefined", 0, 0x80, XCVR_10baseT, 10000},
- { "10base2", 0, 0x10, XCVR_AUI, (1 * HZ) / 10},
- { "100baseTX", Media_Lnk, 0x02, XCVR_100baseFx, (14 * HZ) / 10},
- { "100baseFX", Media_Lnk, 0x04, XCVR_MII, (14 * HZ) / 10},
- { "MII", 0, 0x40, XCVR_10baseT, 3 * HZ},
- { "undefined", 0, 0x01, XCVR_10baseT, 10000},
- { "Default", 0, 0xFF, XCVR_10baseT, 10000},
-};
-
-#ifdef __ISAPNP__
-static struct isapnp_device_id corkscrew_isapnp_adapters[] = {
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
- ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5051),
- (long) "3Com Fast EtherLink ISA" },
- { } /* terminate list */
-};
-
-MODULE_DEVICE_TABLE(isapnp, corkscrew_isapnp_adapters);
-
-static int nopnp;
-#endif /* __ISAPNP__ */
-
-static struct net_device *corkscrew_scan(int unit);
-static int corkscrew_setup(struct net_device *dev, int ioaddr,
- struct pnp_dev *idev, int card_number);
-static int corkscrew_open(struct net_device *dev);
-static void corkscrew_timer(struct timer_list *t);
-static netdev_tx_t corkscrew_start_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static int corkscrew_rx(struct net_device *dev);
-static void corkscrew_timeout(struct net_device *dev, unsigned int txqueue);
-static int boomerang_rx(struct net_device *dev);
-static irqreturn_t corkscrew_interrupt(int irq, void *dev_id);
-static int corkscrew_close(struct net_device *dev);
-static void update_stats(int addr, struct net_device *dev);
-static struct net_device_stats *corkscrew_get_stats(struct net_device *dev);
-static void set_rx_mode(struct net_device *dev);
-static const struct ethtool_ops netdev_ethtool_ops;
-
-
-/*
- Unfortunately maximizing the shared code between the integrated and
- module version of the driver results in a complicated set of initialization
- procedures.
- init_module() -- modules / tc59x_init() -- built-in
- The wrappers for corkscrew_scan()
- corkscrew_scan() The common routine that scans for PCI and EISA cards
- corkscrew_found_device() Allocate a device structure when we find a card.
- Different versions exist for modules and built-in.
- corkscrew_probe1() Fill in the device structure -- this is separated
- so that the modules code can put it in dev->init.
-*/
-/* This driver uses 'options' to pass the media type, full-duplex flag, etc. */
-/* Note: this is the only limit on the number of cards supported!! */
-static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1, };
-
-#ifdef MODULE
-static int debug = -1;
-
-module_param(debug, int, 0);
-module_param_array(options, int, NULL, 0);
-module_param(rx_copybreak, int, 0);
-module_param(max_interrupt_work, int, 0);
-MODULE_PARM_DESC(debug, "3c515 debug level (0-6)");
-MODULE_PARM_DESC(options, "3c515: Bits 0-2: media type, bit 3: full duplex, bit 4: bus mastering");
-MODULE_PARM_DESC(rx_copybreak, "3c515 copy breakpoint for copy-only-tiny-frames");
-MODULE_PARM_DESC(max_interrupt_work, "3c515 maximum events handled per interrupt");
-
-/* A list of all installed Vortex devices, for removing the driver module. */
-/* we will need locking (and refcounting) if we ever use it for more */
-static LIST_HEAD(root_corkscrew_dev);
-
-static int corkscrew_init_module(void)
-{
- int found = 0;
- if (debug >= 0)
- corkscrew_debug = debug;
- while (corkscrew_scan(-1))
- found++;
- return found ? 0 : -ENODEV;
-}
-module_init(corkscrew_init_module);
-
-#else
-struct net_device *tc515_probe(int unit)
-{
- struct net_device *dev = corkscrew_scan(unit);
-
- if (!dev)
- return ERR_PTR(-ENODEV);
-
- return dev;
-}
-#endif /* not MODULE */
-
-static int check_device(unsigned ioaddr)
-{
- int timer;
-
- if (!request_region(ioaddr, CORKSCREW_TOTAL_SIZE, "3c515"))
- return 0;
- /* Check the resource configuration for a matching ioaddr. */
- if ((inw(ioaddr + 0x2002) & 0x1f0) != (ioaddr & 0x1f0)) {
- release_region(ioaddr, CORKSCREW_TOTAL_SIZE);
- return 0;
- }
- /* Verify by reading the device ID from the EEPROM. */
- outw(EEPROM_Read + 7, ioaddr + Wn0EepromCmd);
- /* Pause for at least 162 us. for the read to take place. */
- for (timer = 4; timer >= 0; timer--) {
- udelay(162);
- if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0)
- break;
- }
- if (inw(ioaddr + Wn0EepromData) != 0x6d50) {
- release_region(ioaddr, CORKSCREW_TOTAL_SIZE);
- return 0;
- }
- return 1;
-}
-
-static void cleanup_card(struct net_device *dev)
-{
- struct corkscrew_private *vp = netdev_priv(dev);
- list_del_init(&vp->list);
- if (dev->dma)
- free_dma(dev->dma);
- outw(TotalReset, dev->base_addr + EL3_CMD);
- release_region(dev->base_addr, CORKSCREW_TOTAL_SIZE);
- if (vp->dev)
- pnp_device_detach(to_pnp_dev(vp->dev));
-}
-
-static struct net_device *corkscrew_scan(int unit)
-{
- struct net_device *dev;
- static int cards_found = 0;
- static int ioaddr;
- int err;
-#ifdef __ISAPNP__
- short i;
- static int pnp_cards;
-#endif
-
- dev = alloc_etherdev(sizeof(struct corkscrew_private));
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- if (unit >= 0) {
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- }
-
-#ifdef __ISAPNP__
- if(nopnp == 1)
- goto no_pnp;
- for(i=0; corkscrew_isapnp_adapters[i].vendor != 0; i++) {
- struct pnp_dev *idev = NULL;
- int irq;
- while((idev = pnp_find_dev(NULL,
- corkscrew_isapnp_adapters[i].vendor,
- corkscrew_isapnp_adapters[i].function,
- idev))) {
-
- if (pnp_device_attach(idev) < 0)
- continue;
- if (pnp_activate_dev(idev) < 0) {
- pr_warn("pnp activate failed (out of resources?)\n");
- pnp_device_detach(idev);
- continue;
- }
- if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
- pnp_device_detach(idev);
- continue;
- }
- ioaddr = pnp_port_start(idev, 0);
- irq = pnp_irq(idev, 0);
- if (!check_device(ioaddr)) {
- pnp_device_detach(idev);
- continue;
- }
- if(corkscrew_debug)
- pr_debug("ISAPNP reports %s at i/o 0x%x, irq %d\n",
- (char*) corkscrew_isapnp_adapters[i].driver_data, ioaddr, irq);
- pr_info("3c515 Resource configuration register %#4.4x, DCR %4.4x.\n",
- inl(ioaddr + 0x2002), inw(ioaddr + 0x2000));
- /* irq = inw(ioaddr + 0x2002) & 15; */ /* Use the irq from isapnp */
- SET_NETDEV_DEV(dev, &idev->dev);
- pnp_cards++;
- err = corkscrew_setup(dev, ioaddr, idev, cards_found++);
- if (!err)
- return dev;
- cleanup_card(dev);
- }
- }
-no_pnp:
-#endif /* __ISAPNP__ */
-
- /* Check all locations on the ISA bus -- evil! */
- for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x20) {
- if (!check_device(ioaddr))
- continue;
-
- pr_info("3c515 Resource configuration register %#4.4x, DCR %4.4x.\n",
- inl(ioaddr + 0x2002), inw(ioaddr + 0x2000));
- err = corkscrew_setup(dev, ioaddr, NULL, cards_found++);
- if (!err)
- return dev;
- cleanup_card(dev);
- }
- free_netdev(dev);
- return NULL;
-}
-
-
-static const struct net_device_ops netdev_ops = {
- .ndo_open = corkscrew_open,
- .ndo_stop = corkscrew_close,
- .ndo_start_xmit = corkscrew_start_xmit,
- .ndo_tx_timeout = corkscrew_timeout,
- .ndo_get_stats = corkscrew_get_stats,
- .ndo_set_rx_mode = set_rx_mode,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-
-static int corkscrew_setup(struct net_device *dev, int ioaddr,
- struct pnp_dev *idev, int card_number)
-{
- struct corkscrew_private *vp = netdev_priv(dev);
- unsigned int eeprom[0x40], checksum = 0; /* EEPROM contents */
- __be16 addr[ETH_ALEN / 2];
- int i;
- int irq;
-
-#ifdef __ISAPNP__
- if (idev) {
- irq = pnp_irq(idev, 0);
- vp->dev = &idev->dev;
- } else {
- irq = inw(ioaddr + 0x2002) & 15;
- }
-#else
- irq = inw(ioaddr + 0x2002) & 15;
-#endif
-
- dev->base_addr = ioaddr;
- dev->irq = irq;
- dev->dma = inw(ioaddr + 0x2000) & 7;
- vp->product_name = "3c515";
- vp->options = dev->mem_start;
- vp->our_dev = dev;
-
- if (!vp->options) {
- if (card_number >= MAX_UNITS)
- vp->options = -1;
- else
- vp->options = options[card_number];
- }
-
- if (vp->options >= 0) {
- vp->media_override = vp->options & 7;
- if (vp->media_override == 2)
- vp->media_override = 0;
- vp->full_duplex = (vp->options & 8) ? 1 : 0;
- vp->bus_master = (vp->options & 16) ? 1 : 0;
- } else {
- vp->media_override = 7;
- vp->full_duplex = 0;
- vp->bus_master = 0;
- }
-#ifdef MODULE
- list_add(&vp->list, &root_corkscrew_dev);
-#endif
-
- pr_info("%s: 3Com %s at %#3x,", dev->name, vp->product_name, ioaddr);
-
- spin_lock_init(&vp->lock);
-
- timer_setup(&vp->timer, corkscrew_timer, 0);
-
- /* Read the station address from the EEPROM. */
- EL3WINDOW(0);
- for (i = 0; i < 0x18; i++) {
- int timer;
- outw(EEPROM_Read + i, ioaddr + Wn0EepromCmd);
- /* Pause for at least 162 us. for the read to take place. */
- for (timer = 4; timer >= 0; timer--) {
- udelay(162);
- if ((inw(ioaddr + Wn0EepromCmd) & 0x0200) == 0)
- break;
- }
- eeprom[i] = inw(ioaddr + Wn0EepromData);
- checksum ^= eeprom[i];
- if (i < 3)
- addr[i] = htons(eeprom[i]);
- }
- eth_hw_addr_set(dev, (u8 *)addr);
- checksum = (checksum ^ (checksum >> 8)) & 0xff;
- if (checksum != 0x00)
- pr_cont(" ***INVALID CHECKSUM %4.4x*** ", checksum);
- pr_cont(" %pM", dev->dev_addr);
- if (eeprom[16] == 0x11c7) { /* Corkscrew */
- if (request_dma(dev->dma, "3c515")) {
- pr_cont(", DMA %d allocation failed", dev->dma);
- dev->dma = 0;
- } else
- pr_cont(", DMA %d", dev->dma);
- }
- pr_cont(", IRQ %d\n", dev->irq);
- /* Tell them about an invalid IRQ. */
- if (corkscrew_debug && (dev->irq <= 0 || dev->irq > 15))
- pr_warn(" *** Warning: this IRQ is unlikely to work! ***\n");
-
- {
- static const char * const ram_split[] = {
- "5:3", "3:1", "1:1", "3:5"
- };
- __u32 config;
- EL3WINDOW(3);
- vp->available_media = inw(ioaddr + Wn3_Options);
- config = inl(ioaddr + Wn3_Config);
- if (corkscrew_debug > 1)
- pr_info(" Internal config register is %4.4x, transceivers %#x.\n",
- config, inw(ioaddr + Wn3_Options));
- pr_info(" %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n",
- 8 << config & Ram_size,
- config & Ram_width ? "word" : "byte",
- ram_split[(config & Ram_split) >> Ram_split_shift],
- config & Autoselect ? "autoselect/" : "",
- media_tbl[(config & Xcvr) >> Xcvr_shift].name);
- vp->default_media = (config & Xcvr) >> Xcvr_shift;
- vp->autoselect = config & Autoselect ? 1 : 0;
- dev->if_port = vp->default_media;
- }
- if (vp->media_override != 7) {
- pr_info(" Media override to transceiver type %d (%s).\n",
- vp->media_override,
- media_tbl[vp->media_override].name);
- dev->if_port = vp->media_override;
- }
-
- vp->capabilities = eeprom[16];
- vp->full_bus_master_tx = (vp->capabilities & 0x20) ? 1 : 0;
- /* Rx is broken at 10mbps, so we always disable it. */
- /* vp->full_bus_master_rx = 0; */
- vp->full_bus_master_rx = (vp->capabilities & 0x20) ? 1 : 0;
-
- /* The 3c51x-specific entries in the device structure. */
- dev->netdev_ops = &netdev_ops;
- dev->watchdog_timeo = (400 * HZ) / 1000;
- dev->ethtool_ops = &netdev_ethtool_ops;
-
- return register_netdev(dev);
-}
-
-
-static int corkscrew_open(struct net_device *dev)
-{
- int ioaddr = dev->base_addr;
- struct corkscrew_private *vp = netdev_priv(dev);
- bool armtimer = false;
- __u32 config;
- int i;
-
- /* Before initializing select the active media port. */
- EL3WINDOW(3);
- if (vp->full_duplex)
- outb(0x20, ioaddr + Wn3_MAC_Ctrl); /* Set the full-duplex bit. */
- config = inl(ioaddr + Wn3_Config);
-
- if (vp->media_override != 7) {
- if (corkscrew_debug > 1)
- pr_info("%s: Media override to transceiver %d (%s).\n",
- dev->name, vp->media_override,
- media_tbl[vp->media_override].name);
- dev->if_port = vp->media_override;
- } else if (vp->autoselect) {
- /* Find first available media type, starting with 100baseTx. */
- dev->if_port = 4;
- while (!(vp->available_media & media_tbl[dev->if_port].mask))
- dev->if_port = media_tbl[dev->if_port].next;
-
- if (corkscrew_debug > 1)
- pr_debug("%s: Initial media type %s.\n",
- dev->name, media_tbl[dev->if_port].name);
- armtimer = true;
- } else
- dev->if_port = vp->default_media;
-
- config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift);
- outl(config, ioaddr + Wn3_Config);
-
- if (corkscrew_debug > 1) {
- pr_debug("%s: corkscrew_open() InternalConfig %8.8x.\n",
- dev->name, config);
- }
-
- outw(TxReset, ioaddr + EL3_CMD);
- for (i = 20; i >= 0; i--)
- if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
- break;
-
- outw(RxReset, ioaddr + EL3_CMD);
- /* Wait a few ticks for the RxReset command to complete. */
- for (i = 20; i >= 0; i--)
- if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
- break;
-
- outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
-
- /* Use the now-standard shared IRQ implementation. */
- if (vp->capabilities == 0x11c7) {
- /* Corkscrew: Cannot share ISA resources. */
- if (dev->irq == 0 ||
- dev->dma == 0 ||
- request_irq(dev->irq, corkscrew_interrupt, 0,
- vp->product_name, dev))
- return -EAGAIN;
- enable_dma(dev->dma);
- set_dma_mode(dev->dma, DMA_MODE_CASCADE);
- } else if (request_irq(dev->irq, corkscrew_interrupt, IRQF_SHARED,
- vp->product_name, dev)) {
- return -EAGAIN;
- }
-
- if (armtimer)
- mod_timer(&vp->timer, jiffies + media_tbl[dev->if_port].wait);
-
- if (corkscrew_debug > 1) {
- EL3WINDOW(4);
- pr_debug("%s: corkscrew_open() irq %d media status %4.4x.\n",
- dev->name, dev->irq, inw(ioaddr + Wn4_Media));
- }
-
- /* Set the station address and mask in window 2 each time opened. */
- EL3WINDOW(2);
- for (i = 0; i < 6; i++)
- outb(dev->dev_addr[i], ioaddr + i);
- for (; i < 12; i += 2)
- outw(0, ioaddr + i);
-
- if (dev->if_port == 3)
- /* Start the thinnet transceiver. We should really wait 50ms... */
- outw(StartCoax, ioaddr + EL3_CMD);
- EL3WINDOW(4);
- outw((inw(ioaddr + Wn4_Media) & ~(Media_10TP | Media_SQE)) |
- media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media);
-
- /* Switch to the stats window, and clear all stats by reading. */
- outw(StatsDisable, ioaddr + EL3_CMD);
- EL3WINDOW(6);
- for (i = 0; i < 10; i++)
- inb(ioaddr + i);
- inw(ioaddr + 10);
- inw(ioaddr + 12);
- /* New: On the Vortex we must also clear the BadSSD counter. */
- EL3WINDOW(4);
- inb(ioaddr + 12);
- /* ..and on the Boomerang we enable the extra statistics bits. */
- outw(0x0040, ioaddr + Wn4_NetDiag);
-
- /* Switch to register set 7 for normal use. */
- EL3WINDOW(7);
-
- if (vp->full_bus_master_rx) { /* Boomerang bus master. */
- vp->cur_rx = vp->dirty_rx = 0;
- if (corkscrew_debug > 2)
- pr_debug("%s: Filling in the Rx ring.\n", dev->name);
- for (i = 0; i < RX_RING_SIZE; i++) {
- struct sk_buff *skb;
- if (i < (RX_RING_SIZE - 1))
- vp->rx_ring[i].next =
- isa_virt_to_bus(&vp->rx_ring[i + 1]);
- else
- vp->rx_ring[i].next = 0;
- vp->rx_ring[i].status = 0; /* Clear complete bit. */
- vp->rx_ring[i].length = PKT_BUF_SZ | 0x80000000;
- skb = netdev_alloc_skb(dev, PKT_BUF_SZ);
- vp->rx_skbuff[i] = skb;
- if (skb == NULL)
- break; /* Bad news! */
- skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
- vp->rx_ring[i].addr = isa_virt_to_bus(skb->data);
- }
- if (i != 0)
- vp->rx_ring[i - 1].next =
- isa_virt_to_bus(&vp->rx_ring[0]); /* Wrap the ring. */
- outl(isa_virt_to_bus(&vp->rx_ring[0]), ioaddr + UpListPtr);
- }
- if (vp->full_bus_master_tx) { /* Boomerang bus master Tx. */
- vp->cur_tx = vp->dirty_tx = 0;
- outb(PKT_BUF_SZ >> 8, ioaddr + TxFreeThreshold); /* Room for a packet. */
- /* Clear the Tx ring. */
- for (i = 0; i < TX_RING_SIZE; i++)
- vp->tx_skbuff[i] = NULL;
- outl(0, ioaddr + DownListPtr);
- }
- /* Set receiver mode: presumably accept b-case and phys addr only. */
- set_rx_mode(dev);
- outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
-
- netif_start_queue(dev);
-
- outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
- outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
- /* Allow status bits to be seen. */
- outw(SetStatusEnb | AdapterFailure | IntReq | StatsFull |
- (vp->full_bus_master_tx ? DownComplete : TxAvailable) |
- (vp->full_bus_master_rx ? UpComplete : RxComplete) |
- (vp->bus_master ? DMADone : 0), ioaddr + EL3_CMD);
- /* Ack all pending events, and set active indicator mask. */
- outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
- ioaddr + EL3_CMD);
- outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
- | (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete,
- ioaddr + EL3_CMD);
-
- return 0;
-}
-
-static void corkscrew_timer(struct timer_list *t)
-{
-#ifdef AUTOMEDIA
- struct corkscrew_private *vp = timer_container_of(vp, t, timer);
- struct net_device *dev = vp->our_dev;
- int ioaddr = dev->base_addr;
- unsigned long flags;
- int ok = 0;
-
- if (corkscrew_debug > 1)
- pr_debug("%s: Media selection timer tick happened, %s.\n",
- dev->name, media_tbl[dev->if_port].name);
-
- spin_lock_irqsave(&vp->lock, flags);
-
- {
- int old_window = inw(ioaddr + EL3_CMD) >> 13;
- int media_status;
- EL3WINDOW(4);
- media_status = inw(ioaddr + Wn4_Media);
- switch (dev->if_port) {
- case 0:
- case 4:
- case 5: /* 10baseT, 100baseTX, 100baseFX */
- if (media_status & Media_LnkBeat) {
- ok = 1;
- if (corkscrew_debug > 1)
- pr_debug("%s: Media %s has link beat, %x.\n",
- dev->name,
- media_tbl[dev->if_port].name,
- media_status);
- } else if (corkscrew_debug > 1)
- pr_debug("%s: Media %s is has no link beat, %x.\n",
- dev->name,
- media_tbl[dev->if_port].name,
- media_status);
-
- break;
- default: /* Other media types handled by Tx timeouts. */
- if (corkscrew_debug > 1)
- pr_debug("%s: Media %s is has no indication, %x.\n",
- dev->name,
- media_tbl[dev->if_port].name,
- media_status);
- ok = 1;
- }
- if (!ok) {
- __u32 config;
-
- do {
- dev->if_port =
- media_tbl[dev->if_port].next;
- }
- while (!(vp->available_media & media_tbl[dev->if_port].mask));
-
- if (dev->if_port == 8) { /* Go back to default. */
- dev->if_port = vp->default_media;
- if (corkscrew_debug > 1)
- pr_debug("%s: Media selection failing, using default %s port.\n",
- dev->name,
- media_tbl[dev->if_port].name);
- } else {
- if (corkscrew_debug > 1)
- pr_debug("%s: Media selection failed, now trying %s port.\n",
- dev->name,
- media_tbl[dev->if_port].name);
- vp->timer.expires = jiffies + media_tbl[dev->if_port].wait;
- add_timer(&vp->timer);
- }
- outw((media_status & ~(Media_10TP | Media_SQE)) |
- media_tbl[dev->if_port].media_bits,
- ioaddr + Wn4_Media);
-
- EL3WINDOW(3);
- config = inl(ioaddr + Wn3_Config);
- config = (config & ~Xcvr) | (dev->if_port << Xcvr_shift);
- outl(config, ioaddr + Wn3_Config);
-
- outw(dev->if_port == 3 ? StartCoax : StopCoax,
- ioaddr + EL3_CMD);
- }
- EL3WINDOW(old_window);
- }
-
- spin_unlock_irqrestore(&vp->lock, flags);
- if (corkscrew_debug > 1)
- pr_debug("%s: Media selection timer finished, %s.\n",
- dev->name, media_tbl[dev->if_port].name);
-
-#endif /* AUTOMEDIA */
-}
-
-static void corkscrew_timeout(struct net_device *dev, unsigned int txqueue)
-{
- int i;
- struct corkscrew_private *vp = netdev_priv(dev);
- int ioaddr = dev->base_addr;
-
- pr_warn("%s: transmit timed out, tx_status %2.2x status %4.4x\n",
- dev->name, inb(ioaddr + TxStatus),
- inw(ioaddr + EL3_STATUS));
- /* Slight code bloat to be user friendly. */
- if ((inb(ioaddr + TxStatus) & 0x88) == 0x88)
- pr_warn("%s: Transmitter encountered 16 collisions -- network cable problem?\n",
- dev->name);
-#ifndef final_version
- pr_debug(" Flags; bus-master %d, full %d; dirty %d current %d.\n",
- vp->full_bus_master_tx, vp->tx_full, vp->dirty_tx,
- vp->cur_tx);
- pr_debug(" Down list %8.8x vs. %p.\n", inl(ioaddr + DownListPtr),
- &vp->tx_ring[0]);
- for (i = 0; i < TX_RING_SIZE; i++) {
- pr_debug(" %d: %p length %8.8x status %8.8x\n", i,
- &vp->tx_ring[i],
- vp->tx_ring[i].length, vp->tx_ring[i].status);
- }
-#endif
- /* Issue TX_RESET and TX_START commands. */
- outw(TxReset, ioaddr + EL3_CMD);
- for (i = 20; i >= 0; i--)
- if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
- break;
- outw(TxEnable, ioaddr + EL3_CMD);
- netif_trans_update(dev); /* prevent tx timeout */
- dev->stats.tx_errors++;
- dev->stats.tx_dropped++;
- netif_wake_queue(dev);
-}
-
-static netdev_tx_t corkscrew_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
-{
- struct corkscrew_private *vp = netdev_priv(dev);
- int ioaddr = dev->base_addr;
-
- /* Block a timer-based transmit from overlapping. */
-
- netif_stop_queue(dev);
-
- if (vp->full_bus_master_tx) { /* BOOMERANG bus-master */
- /* Calculate the next Tx descriptor entry. */
- int entry = vp->cur_tx % TX_RING_SIZE;
- struct boom_tx_desc *prev_entry;
- unsigned long flags;
- int i;
-
- if (vp->tx_full) /* No room to transmit with */
- return NETDEV_TX_BUSY;
- if (vp->cur_tx != 0)
- prev_entry = &vp->tx_ring[(vp->cur_tx - 1) % TX_RING_SIZE];
- else
- prev_entry = NULL;
- if (corkscrew_debug > 3)
- pr_debug("%s: Trying to send a packet, Tx index %d.\n",
- dev->name, vp->cur_tx);
- /* vp->tx_full = 1; */
- vp->tx_skbuff[entry] = skb;
- vp->tx_ring[entry].next = 0;
- vp->tx_ring[entry].addr = isa_virt_to_bus(skb->data);
- vp->tx_ring[entry].length = skb->len | 0x80000000;
- vp->tx_ring[entry].status = skb->len | 0x80000000;
-
- spin_lock_irqsave(&vp->lock, flags);
- outw(DownStall, ioaddr + EL3_CMD);
- /* Wait for the stall to complete. */
- for (i = 20; i >= 0; i--)
- if ((inw(ioaddr + EL3_STATUS) & CmdInProgress) == 0)
- break;
- if (prev_entry)
- prev_entry->next = isa_virt_to_bus(&vp->tx_ring[entry]);
- if (inl(ioaddr + DownListPtr) == 0) {
- outl(isa_virt_to_bus(&vp->tx_ring[entry]),
- ioaddr + DownListPtr);
- queued_packet++;
- }
- outw(DownUnstall, ioaddr + EL3_CMD);
- spin_unlock_irqrestore(&vp->lock, flags);
-
- vp->cur_tx++;
- if (vp->cur_tx - vp->dirty_tx > TX_RING_SIZE - 1)
- vp->tx_full = 1;
- else { /* Clear previous interrupt enable. */
- if (prev_entry)
- prev_entry->status &= ~0x80000000;
- netif_wake_queue(dev);
- }
- return NETDEV_TX_OK;
- }
- /* Put out the doubleword header... */
- outl(skb->len, ioaddr + TX_FIFO);
- dev->stats.tx_bytes += skb->len;
-#ifdef VORTEX_BUS_MASTER
- if (vp->bus_master) {
- /* Set the bus-master controller to transfer the packet. */
- outl(isa_virt_to_bus(skb->data), ioaddr + Wn7_MasterAddr);
- outw((skb->len + 3) & ~3, ioaddr + Wn7_MasterLen);
- vp->tx_skb = skb;
- outw(StartDMADown, ioaddr + EL3_CMD);
- /* queue will be woken at the DMADone interrupt. */
- } else {
- /* ... and the packet rounded to a doubleword. */
- outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
- dev_kfree_skb(skb);
- if (inw(ioaddr + TxFree) > 1536) {
- netif_wake_queue(dev);
- } else
- /* Interrupt us when the FIFO has room for max-sized packet. */
- outw(SetTxThreshold + (1536 >> 2),
- ioaddr + EL3_CMD);
- }
-#else
- /* ... and the packet rounded to a doubleword. */
- outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
- dev_kfree_skb(skb);
- if (inw(ioaddr + TxFree) > 1536) {
- netif_wake_queue(dev);
- } else
- /* Interrupt us when the FIFO has room for max-sized packet. */
- outw(SetTxThreshold + (1536 >> 2), ioaddr + EL3_CMD);
-#endif /* bus master */
-
-
- /* Clear the Tx status stack. */
- {
- short tx_status;
- int i = 4;
-
- while (--i > 0 && (tx_status = inb(ioaddr + TxStatus)) > 0) {
- if (tx_status & 0x3C) { /* A Tx-disabling error occurred. */
- if (corkscrew_debug > 2)
- pr_debug("%s: Tx error, status %2.2x.\n",
- dev->name, tx_status);
- if (tx_status & 0x04)
- dev->stats.tx_fifo_errors++;
- if (tx_status & 0x38)
- dev->stats.tx_aborted_errors++;
- if (tx_status & 0x30) {
- int j;
- outw(TxReset, ioaddr + EL3_CMD);
- for (j = 20; j >= 0; j--)
- if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
- break;
- }
- outw(TxEnable, ioaddr + EL3_CMD);
- }
- outb(0x00, ioaddr + TxStatus); /* Pop the status stack. */
- }
- }
- return NETDEV_TX_OK;
-}
-
-/* The interrupt handler does all of the Rx thread work and cleans up
- after the Tx thread. */
-
-static irqreturn_t corkscrew_interrupt(int irq, void *dev_id)
-{
- /* Use the now-standard shared IRQ implementation. */
- struct net_device *dev = dev_id;
- struct corkscrew_private *lp = netdev_priv(dev);
- int ioaddr, status;
- int latency;
- int i = max_interrupt_work;
-
- ioaddr = dev->base_addr;
- latency = inb(ioaddr + Timer);
-
- spin_lock(&lp->lock);
-
- status = inw(ioaddr + EL3_STATUS);
-
- if (corkscrew_debug > 4)
- pr_debug("%s: interrupt, status %4.4x, timer %d.\n",
- dev->name, status, latency);
- if ((status & 0xE000) != 0xE000) {
- static int donedidthis;
- /* Some interrupt controllers store a bogus interrupt from boot-time.
- Ignore a single early interrupt, but don't hang the machine for
- other interrupt problems. */
- if (donedidthis++ > 100) {
- pr_err("%s: Bogus interrupt, bailing. Status %4.4x, start=%d.\n",
- dev->name, status, netif_running(dev));
- free_irq(dev->irq, dev);
- dev->irq = -1;
- }
- }
-
- do {
- if (corkscrew_debug > 5)
- pr_debug("%s: In interrupt loop, status %4.4x.\n",
- dev->name, status);
- if (status & RxComplete)
- corkscrew_rx(dev);
-
- if (status & TxAvailable) {
- if (corkscrew_debug > 5)
- pr_debug(" TX room bit was handled.\n");
- /* There's room in the FIFO for a full-sized packet. */
- outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
- netif_wake_queue(dev);
- }
- if (status & DownComplete) {
- unsigned int dirty_tx = lp->dirty_tx;
-
- while (lp->cur_tx - dirty_tx > 0) {
- int entry = dirty_tx % TX_RING_SIZE;
- if (inl(ioaddr + DownListPtr) == isa_virt_to_bus(&lp->tx_ring[entry]))
- break; /* It still hasn't been processed. */
- if (lp->tx_skbuff[entry]) {
- dev_consume_skb_irq(lp->tx_skbuff[entry]);
- lp->tx_skbuff[entry] = NULL;
- }
- dirty_tx++;
- }
- lp->dirty_tx = dirty_tx;
- outw(AckIntr | DownComplete, ioaddr + EL3_CMD);
- if (lp->tx_full && (lp->cur_tx - dirty_tx <= TX_RING_SIZE - 1)) {
- lp->tx_full = 0;
- netif_wake_queue(dev);
- }
- }
-#ifdef VORTEX_BUS_MASTER
- if (status & DMADone) {
- outw(0x1000, ioaddr + Wn7_MasterStatus); /* Ack the event. */
- dev_consume_skb_irq(lp->tx_skb); /* Release the transferred buffer */
- netif_wake_queue(dev);
- }
-#endif
- if (status & UpComplete) {
- boomerang_rx(dev);
- outw(AckIntr | UpComplete, ioaddr + EL3_CMD);
- }
- if (status & (AdapterFailure | RxEarly | StatsFull)) {
- /* Handle all uncommon interrupts at once. */
- if (status & RxEarly) { /* Rx early is unused. */
- corkscrew_rx(dev);
- outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
- }
- if (status & StatsFull) { /* Empty statistics. */
- static int DoneDidThat;
- if (corkscrew_debug > 4)
- pr_debug("%s: Updating stats.\n", dev->name);
- update_stats(ioaddr, dev);
- /* DEBUG HACK: Disable statistics as an interrupt source. */
- /* This occurs when we have the wrong media type! */
- if (DoneDidThat == 0 && inw(ioaddr + EL3_STATUS) & StatsFull) {
- int win, reg;
- pr_notice("%s: Updating stats failed, disabling stats as an interrupt source.\n",
- dev->name);
- for (win = 0; win < 8; win++) {
- EL3WINDOW(win);
- pr_notice("Vortex window %d:", win);
- for (reg = 0; reg < 16; reg++)
- pr_cont(" %2.2x", inb(ioaddr + reg));
- pr_cont("\n");
- }
- EL3WINDOW(7);
- outw(SetIntrEnb | TxAvailable |
- RxComplete | AdapterFailure |
- UpComplete | DownComplete |
- TxComplete, ioaddr + EL3_CMD);
- DoneDidThat++;
- }
- }
- if (status & AdapterFailure) {
- /* Adapter failure requires Rx reset and reinit. */
- outw(RxReset, ioaddr + EL3_CMD);
- /* Set the Rx filter to the current state. */
- set_rx_mode(dev);
- outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
- outw(AckIntr | AdapterFailure,
- ioaddr + EL3_CMD);
- }
- }
-
- if (--i < 0) {
- pr_err("%s: Too much work in interrupt, status %4.4x. Disabling functions (%4.4x).\n",
- dev->name, status, SetStatusEnb | ((~status) & 0x7FE));
- /* Disable all pending interrupts. */
- outw(SetStatusEnb | ((~status) & 0x7FE), ioaddr + EL3_CMD);
- outw(AckIntr | 0x7FF, ioaddr + EL3_CMD);
- break;
- }
- /* Acknowledge the IRQ. */
- outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
-
- } while ((status = inw(ioaddr + EL3_STATUS)) & (IntLatch | RxComplete));
-
- spin_unlock(&lp->lock);
-
- if (corkscrew_debug > 4)
- pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name, status);
- return IRQ_HANDLED;
-}
-
-static int corkscrew_rx(struct net_device *dev)
-{
- int ioaddr = dev->base_addr;
- int i;
- short rx_status;
-
- if (corkscrew_debug > 5)
- pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
- inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus));
- while ((rx_status = inw(ioaddr + RxStatus)) > 0) {
- if (rx_status & 0x4000) { /* Error, update stats. */
- unsigned char rx_error = inb(ioaddr + RxErrors);
- if (corkscrew_debug > 2)
- pr_debug(" Rx error: status %2.2x.\n",
- rx_error);
- dev->stats.rx_errors++;
- if (rx_error & 0x01)
- dev->stats.rx_over_errors++;
- if (rx_error & 0x02)
- dev->stats.rx_length_errors++;
- if (rx_error & 0x04)
- dev->stats.rx_frame_errors++;
- if (rx_error & 0x08)
- dev->stats.rx_crc_errors++;
- if (rx_error & 0x10)
- dev->stats.rx_length_errors++;
- } else {
- /* The packet length: up to 4.5K!. */
- short pkt_len = rx_status & 0x1fff;
- struct sk_buff *skb;
-
- skb = netdev_alloc_skb(dev, pkt_len + 5 + 2);
- if (corkscrew_debug > 4)
- pr_debug("Receiving packet size %d status %4.4x.\n",
- pkt_len, rx_status);
- if (skb != NULL) {
- skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
- /* 'skb_put()' points to the start of sk_buff data area. */
- insl(ioaddr + RX_FIFO,
- skb_put(skb, pkt_len),
- (pkt_len + 3) >> 2);
- outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
- /* Wait a limited time to go to next packet. */
- for (i = 200; i >= 0; i--)
- if (! (inw(ioaddr + EL3_STATUS) & CmdInProgress))
- break;
- continue;
- } else if (corkscrew_debug)
- pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, pkt_len);
- }
- outw(RxDiscard, ioaddr + EL3_CMD);
- dev->stats.rx_dropped++;
- /* Wait a limited time to skip this packet. */
- for (i = 200; i >= 0; i--)
- if (!(inw(ioaddr + EL3_STATUS) & CmdInProgress))
- break;
- }
- return 0;
-}
-
-static int boomerang_rx(struct net_device *dev)
-{
- struct corkscrew_private *vp = netdev_priv(dev);
- int entry = vp->cur_rx % RX_RING_SIZE;
- int ioaddr = dev->base_addr;
- int rx_status;
-
- if (corkscrew_debug > 5)
- pr_debug(" In boomerang_rx(), status %4.4x, rx_status %4.4x.\n",
- inw(ioaddr + EL3_STATUS), inw(ioaddr + RxStatus));
- while ((rx_status = vp->rx_ring[entry].status) & RxDComplete) {
- if (rx_status & RxDError) { /* Error, update stats. */
- unsigned char rx_error = rx_status >> 16;
- if (corkscrew_debug > 2)
- pr_debug(" Rx error: status %2.2x.\n",
- rx_error);
- dev->stats.rx_errors++;
- if (rx_error & 0x01)
- dev->stats.rx_over_errors++;
- if (rx_error & 0x02)
- dev->stats.rx_length_errors++;
- if (rx_error & 0x04)
- dev->stats.rx_frame_errors++;
- if (rx_error & 0x08)
- dev->stats.rx_crc_errors++;
- if (rx_error & 0x10)
- dev->stats.rx_length_errors++;
- } else {
- /* The packet length: up to 4.5K!. */
- short pkt_len = rx_status & 0x1fff;
- struct sk_buff *skb;
-
- dev->stats.rx_bytes += pkt_len;
- if (corkscrew_debug > 4)
- pr_debug("Receiving packet size %d status %4.4x.\n",
- pkt_len, rx_status);
-
- /* Check if the packet is long enough to just accept without
- copying to a properly sized skbuff. */
- if (pkt_len < rx_copybreak &&
- (skb = netdev_alloc_skb(dev, pkt_len + 4)) != NULL) {
- skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
- /* 'skb_put()' points to the start of sk_buff data area. */
- skb_put_data(skb,
- isa_bus_to_virt(vp->rx_ring[entry].addr),
- pkt_len);
- rx_copy++;
- } else {
- void *temp;
- /* Pass up the skbuff already on the Rx ring. */
- skb = vp->rx_skbuff[entry];
- vp->rx_skbuff[entry] = NULL;
- temp = skb_put(skb, pkt_len);
- /* Remove this checking code for final release. */
- if (isa_bus_to_virt(vp->rx_ring[entry].addr) != temp)
- pr_warn("%s: Warning -- the skbuff addresses do not match in boomerang_rx: %p vs. %p / %p\n",
- dev->name,
- isa_bus_to_virt(vp->rx_ring[entry].addr),
- skb->head, temp);
- rx_nocopy++;
- }
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- }
- entry = (++vp->cur_rx) % RX_RING_SIZE;
- }
- /* Refill the Rx ring buffers. */
- for (; vp->cur_rx - vp->dirty_rx > 0; vp->dirty_rx++) {
- struct sk_buff *skb;
- entry = vp->dirty_rx % RX_RING_SIZE;
- if (vp->rx_skbuff[entry] == NULL) {
- skb = netdev_alloc_skb(dev, PKT_BUF_SZ);
- if (skb == NULL)
- break; /* Bad news! */
- skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
- vp->rx_ring[entry].addr = isa_virt_to_bus(skb->data);
- vp->rx_skbuff[entry] = skb;
- }
- vp->rx_ring[entry].status = 0; /* Clear complete bit. */
- }
- return 0;
-}
-
-static int corkscrew_close(struct net_device *dev)
-{
- struct corkscrew_private *vp = netdev_priv(dev);
- int ioaddr = dev->base_addr;
- int i;
-
- netif_stop_queue(dev);
-
- if (corkscrew_debug > 1) {
- pr_debug("%s: corkscrew_close() status %4.4x, Tx status %2.2x.\n",
- dev->name, inw(ioaddr + EL3_STATUS),
- inb(ioaddr + TxStatus));
- pr_debug("%s: corkscrew close stats: rx_nocopy %d rx_copy %d tx_queued %d.\n",
- dev->name, rx_nocopy, rx_copy, queued_packet);
- }
-
- timer_delete_sync(&vp->timer);
-
- /* Turn off statistics ASAP. We update lp->stats below. */
- outw(StatsDisable, ioaddr + EL3_CMD);
-
- /* Disable the receiver and transmitter. */
- outw(RxDisable, ioaddr + EL3_CMD);
- outw(TxDisable, ioaddr + EL3_CMD);
-
- if (dev->if_port == XCVR_10base2)
- /* Turn off thinnet power. Green! */
- outw(StopCoax, ioaddr + EL3_CMD);
-
- free_irq(dev->irq, dev);
-
- outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
-
- update_stats(ioaddr, dev);
- if (vp->full_bus_master_rx) { /* Free Boomerang bus master Rx buffers. */
- outl(0, ioaddr + UpListPtr);
- for (i = 0; i < RX_RING_SIZE; i++)
- if (vp->rx_skbuff[i]) {
- dev_kfree_skb(vp->rx_skbuff[i]);
- vp->rx_skbuff[i] = NULL;
- }
- }
- if (vp->full_bus_master_tx) { /* Free Boomerang bus master Tx buffers. */
- outl(0, ioaddr + DownListPtr);
- for (i = 0; i < TX_RING_SIZE; i++)
- if (vp->tx_skbuff[i]) {
- dev_kfree_skb(vp->tx_skbuff[i]);
- vp->tx_skbuff[i] = NULL;
- }
- }
-
- return 0;
-}
-
-static struct net_device_stats *corkscrew_get_stats(struct net_device *dev)
-{
- struct corkscrew_private *vp = netdev_priv(dev);
- unsigned long flags;
-
- if (netif_running(dev)) {
- spin_lock_irqsave(&vp->lock, flags);
- update_stats(dev->base_addr, dev);
- spin_unlock_irqrestore(&vp->lock, flags);
- }
- return &dev->stats;
-}
-
-/* Update statistics.
- Unlike with the EL3 we need not worry about interrupts changing
- the window setting from underneath us, but we must still guard
- against a race condition with a StatsUpdate interrupt updating the
- table. This is done by checking that the ASM (!) code generated uses
- atomic updates with '+='.
- */
-static void update_stats(int ioaddr, struct net_device *dev)
-{
- /* Unlike the 3c5x9 we need not turn off stats updates while reading. */
- /* Switch to the stats window, and read everything. */
- EL3WINDOW(6);
- dev->stats.tx_carrier_errors += inb(ioaddr + 0);
- dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
- /* Multiple collisions. */ inb(ioaddr + 2);
- dev->stats.collisions += inb(ioaddr + 3);
- dev->stats.tx_window_errors += inb(ioaddr + 4);
- dev->stats.rx_fifo_errors += inb(ioaddr + 5);
- dev->stats.tx_packets += inb(ioaddr + 6);
- dev->stats.tx_packets += (inb(ioaddr + 9) & 0x30) << 4;
- /* Rx packets */ inb(ioaddr + 7);
- /* Must read to clear */
- /* Tx deferrals */ inb(ioaddr + 8);
- /* Don't bother with register 9, an extension of registers 6&7.
- If we do use the 6&7 values the atomic update assumption above
- is invalid. */
- inw(ioaddr + 10); /* Total Rx and Tx octets. */
- inw(ioaddr + 12);
- /* New: On the Vortex we must also clear the BadSSD counter. */
- EL3WINDOW(4);
- inb(ioaddr + 12);
-
- /* We change back to window 7 (not 1) with the Vortex. */
- EL3WINDOW(7);
-}
-
-/* This new version of set_rx_mode() supports v1.4 kernels.
- The Vortex chip has no documented multicast filter, so the only
- multicast setting is to receive all multicast frames. At least
- the chip has a very clean way to set the mode, unlike many others. */
-static void set_rx_mode(struct net_device *dev)
-{
- int ioaddr = dev->base_addr;
- unsigned short new_mode;
-
- if (dev->flags & IFF_PROMISC) {
- if (corkscrew_debug > 3)
- pr_debug("%s: Setting promiscuous mode.\n",
- dev->name);
- new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm;
- } else if (!netdev_mc_empty(dev) || dev->flags & IFF_ALLMULTI) {
- new_mode = SetRxFilter | RxStation | RxMulticast | RxBroadcast;
- } else
- new_mode = SetRxFilter | RxStation | RxBroadcast;
-
- outw(new_mode, ioaddr + EL3_CMD);
-}
-
-static void netdev_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- strscpy(info->driver, DRV_NAME, sizeof(info->driver));
- snprintf(info->bus_info, sizeof(info->bus_info), "ISA 0x%lx",
- dev->base_addr);
-}
-
-static u32 netdev_get_msglevel(struct net_device *dev)
-{
- return corkscrew_debug;
-}
-
-static void netdev_set_msglevel(struct net_device *dev, u32 level)
-{
- corkscrew_debug = level;
-}
-
-static const struct ethtool_ops netdev_ethtool_ops = {
- .get_drvinfo = netdev_get_drvinfo,
- .get_msglevel = netdev_get_msglevel,
- .set_msglevel = netdev_set_msglevel,
-};
-
-#ifdef MODULE
-static void __exit corkscrew_exit_module(void)
-{
- while (!list_empty(&root_corkscrew_dev)) {
- struct net_device *dev;
- struct corkscrew_private *vp;
-
- vp = list_entry(root_corkscrew_dev.next,
- struct corkscrew_private, list);
- dev = vp->our_dev;
- unregister_netdev(dev);
- cleanup_card(dev);
- free_netdev(dev);
- }
-}
-module_exit(corkscrew_exit_module);
-#endif /* MODULE */
projects / thirdparty / linux.git / commitdiff
