patch-2.1.128 linux/drivers/net/3c515.c
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- Lines: 1500
- Date:
Sun Nov 8 13:43:07 1998
- Orig file:
v2.1.127/linux/drivers/net/3c515.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.1.127/linux/drivers/net/3c515.c linux/drivers/net/3c515.c
@@ -0,0 +1,1499 @@
+/* 3c515.c: A 3Com ISA EtherLink XL "Corkscrew" ethernet driver for linux. */
+/*
+ Written 1997-1998 by Donald Becker.
+
+ This software may be used and distributed according to the terms
+ of the GNU 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@CESDIS.gsfc.nasa.gov, or C/O
+ Center of Excellence in Space Data and Information Sciences
+ Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771
+*/
+
+static char *version = "3c515.c:v0.99 4/7/98 becker@cesdis.gsfc.nasa.gov\n";
+#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 const int rx_copybreak = 200;
+/* Allow setting MTU to a larger size, bypassing the normal ethernet setup. */
+static const int mtu = 1500;
+/* 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.*/
+
+#ifdef MODULE
+#ifdef MODVERSIONS
+#include <linux/modversions.h>
+#endif
+#include <linux/module.h>
+#include <linux/version.h>
+#else
+#define MOD_INC_USE_COUNT
+#define MOD_DEC_USE_COUNT
+#endif
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/ptrace.h>
+#include <linux/errno.h>
+#include <linux/in.h>
+#include <linux/ioport.h>
+#include <linux/malloc.h>
+#include <linux/interrupt.h>
+#include <linux/timer.h>
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#if (LINUX_VERSION_CODE >= 0x10344)
+#define NEW_MULTICAST
+#include <linux/delay.h>
+#else
+#define udelay(microsec) do { int _i = 4*microsec; while (--_i > 0) { __SLOW_DOWN_IO; }} while (0)
+#endif
+
+/* Kernel version compatibility functions. */
+#define RUN_AT(x) (jiffies + (x))
+#define DEV_ALLOC_SKB(len) dev_alloc_skb(len + 2)
+
+#define FREE_IRQ(irqnum, dev) free_irq(irqnum, dev)
+#define REQUEST_IRQ(i,h,f,n, instance) request_irq(i,h,f,n, instance)
+#define IRQ(irq, dev_id, pt_regs) (irq, dev_id, pt_regs)
+
+#if (LINUX_VERSION_CODE < 0x20123)
+#define test_and_set_bit(val, addr) set_bit(val, addr)
+#elif defined(MODULE)
+MODULE_AUTHOR("Donald Becker <becker@cesdis.gsfc.nasa.gov>");
+MODULE_DESCRIPTION("3Com 3c515 Corkscrew driver");
+MODULE_PARM(debug, "i");
+MODULE_PARM(options, "1-" __MODULE_STRING(8) "i");
+MODULE_PARM(full_duplex, "1-" __MODULE_STRING(8) "i");
+MODULE_PARM(rx_copybreak, "i");
+MODULE_PARM(max_interrupt_work, "i");
+#endif
+
+/* "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 = 0, rx_copy = 0, queued_packet = 0;
+
+/* 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 40 /* 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 HAVE_DEVLIST
+struct netdev_entry tc515_drv =
+{"3c515", tc515_probe, CORKSCREW_TOTAL_SIZE, NULL};
+#endif
+
+#ifdef DRIVER_DEBUG
+int vortex_debug = DRIVER_DEBUG;
+#else
+int vortex_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
+dev->tbusy flag. 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 vortex_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 vortex_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,
+};
+union wn3_config {
+ int i;
+ struct w3_config_fields {
+ unsigned int ram_size:3, ram_width:1, ram_speed:2, rom_size:2;
+ int pad8:8;
+ unsigned int ram_split:2, pad18:2, xcvr:3, pad21:1, autoselect:1;
+ int pad24:7;
+ } u;
+};
+
+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 vortex_private {
+ char devname[8]; /* "ethN" string, also for kernel debug. */
+ const char *product_name;
+ struct device *next_module;
+ /* 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 enet_statistics stats;
+ 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;
+};
+
+/* 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},
+};
+
+static int vortex_scan(struct device *dev);
+static struct device *vortex_found_device(struct device *dev, int ioaddr,
+ int irq, int product_index,
+ int options);
+static int vortex_probe1(struct device *dev);
+static int vortex_open(struct device *dev);
+static void vortex_timer(unsigned long arg);
+static int vortex_start_xmit(struct sk_buff *skb, struct device *dev);
+static int vortex_rx(struct device *dev);
+static int boomerang_rx(struct device *dev);
+static void vortex_interrupt IRQ(int irq, void *dev_id, struct pt_regs *regs);
+static int vortex_close(struct device *dev);
+static void update_stats(int addr, struct device *dev);
+static struct enet_statistics *vortex_get_stats(struct device *dev);
+static void set_rx_mode(struct device *dev);
+
+
+/* Unlike the other PCI cards the 59x cards don't need a large contiguous
+ memory region, so making the driver a loadable module is feasible.
+
+ 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 vortex_scan()
+ vortex_scan() The common routine that scans for PCI and EISA cards
+ vortex_found_device() Allocate a device structure when we find a card.
+ Different versions exist for modules and built-in.
+ vortex_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[8] = { -1, -1, -1, -1, -1, -1, -1, -1,};
+
+#ifdef MODULE
+static int debug = -1;
+/* A list of all installed Vortex devices, for removing the driver module. */
+static struct device *root_vortex_dev = NULL;
+
+int
+init_module(void)
+{
+ int cards_found;
+
+ if (debug >= 0)
+ vortex_debug = debug;
+ if (vortex_debug)
+ printk(version);
+
+ root_vortex_dev = NULL;
+ cards_found = vortex_scan(0);
+ return cards_found ? 0 : -ENODEV;
+}
+
+#else
+int tc515_probe(struct device *dev)
+{
+ int cards_found = 0;
+
+ cards_found = vortex_scan(dev);
+
+ if (vortex_debug > 0 && cards_found)
+ printk(version);
+
+ return cards_found ? 0 : -ENODEV;
+}
+#endif /* not MODULE */
+
+static int vortex_scan(struct device *dev)
+{
+ int cards_found = 0;
+ static int ioaddr = 0x100;
+
+ /* Check all locations on the ISA bus -- evil! */
+ for (; ioaddr < 0x400; ioaddr += 0x20) {
+ int irq;
+ if (check_region(ioaddr, CORKSCREW_TOTAL_SIZE))
+ continue;
+ /* Check the resource configuration for a matching ioaddr. */
+ if ((inw(ioaddr + 0x2002) & 0x1f0) != (ioaddr & 0x1f0))
+ continue;
+ /* Verify by reading the device ID from the EEPROM. */
+ {
+ int timer;
+ 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)
+ continue;
+ }
+ printk("3c515 Resource configuraiton register %#4.4x, DCR %4.4x.\n",
+ inl(ioaddr + 0x2002), inw(ioaddr + 0x2000));
+ irq = inw(ioaddr + 0x2002) & 15;
+ vortex_found_device(dev, ioaddr, irq, CORKSCREW_ID, dev && dev->mem_start
+ ? dev->mem_start : options[cards_found]);
+ dev = 0;
+ cards_found++;
+ }
+
+ if (vortex_debug)
+ printk("%d 3c515 cards found.\n", cards_found);
+ return cards_found;
+}
+
+static struct device *vortex_found_device(struct device *dev, int ioaddr,
+ int irq, int product_index,
+ int options)
+{
+ struct vortex_private *vp;
+
+#ifdef MODULE
+ /* Allocate and fill new device structure. */
+ int dev_size = sizeof(struct device) +
+ sizeof(struct vortex_private) + 15; /* Pad for alignment */
+
+ dev = (struct device *) kmalloc(dev_size, GFP_KERNEL);
+ memset(dev, 0, dev_size);
+ /* Align the Rx and Tx ring entries. */
+ dev->priv = (void *)(((long)dev + sizeof(struct device) + 15) & ~15);
+ vp = (struct vortex_private *)dev->priv;
+ dev->name = vp->devname; /* An empty string. */
+ dev->base_addr = ioaddr;
+ dev->irq = irq;
+ dev->dma = (product_index == CORKSCREW_ID ? inw(ioaddr + 0x2000) & 7 : 0);
+ dev->init = vortex_probe1;
+ vp->product_name = "3c515";
+ vp->options = options;
+ if (options >= 0) {
+ vp->media_override = ((options & 7) == 2) ? 0 : options & 7;
+ vp->full_duplex = (options & 8) ? 1 : 0;
+ vp->bus_master = (options & 16) ? 1 : 0;
+ } else {
+ vp->media_override = 7;
+ vp->full_duplex = 0;
+ vp->bus_master = 0;
+ }
+ ether_setup(dev);
+ vp->next_module = root_vortex_dev;
+ root_vortex_dev = dev;
+ if (register_netdev(dev) != 0)
+ return 0;
+#else /* not a MODULE */
+ if (dev) {
+ /* Caution: quad-word alignment required for rings! */
+ dev->priv = kmalloc(sizeof (struct vortex_private), GFP_KERNEL);
+ memset(dev->priv, 0, sizeof (struct vortex_private));
+ }
+ dev = init_etherdev(dev, sizeof(struct vortex_private));
+ dev->base_addr = ioaddr;
+ dev->irq = irq;
+ dev->dma = (product_index == CORKSCREW_ID ? inw(ioaddr + 0x2000) & 7 : 0);
+ vp = (struct vortex_private *)dev->priv;
+ vp->product_name = "3c515";
+ vp->options = options;
+ if (options >= 0) {
+ vp->media_override = ((options & 7) == 2) ? 0 : options & 7;
+ vp->full_duplex = (options & 8) ? 1 : 0;
+ vp->bus_master = (options & 16) ? 1 : 0;
+ } else {
+ vp->media_override = 7;
+ vp->full_duplex = 0;
+ vp->bus_master = 0;
+ }
+
+ vortex_probe1(dev);
+#endif /* MODULE */
+ return dev;
+}
+
+static int vortex_probe1(struct device *dev)
+{
+ int ioaddr = dev->base_addr;
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+ unsigned int eeprom[0x40], checksum = 0; /* EEPROM contents */
+ int i;
+
+ printk("%s: 3Com %s at %#3x,", dev->name,
+ vp->product_name, ioaddr);
+
+ /* Read the station address from the EEPROM. */
+ EL3WINDOW(0);
+ for (i = 0; i < 0x18; i++) {
+ short *phys_addr = (short *)dev->dev_addr;
+ 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)
+ phys_addr[i] = htons(eeprom[i]);
+ }
+ checksum = (checksum ^ (checksum >> 8)) & 0xff;
+ if (checksum != 0x00)
+ printk(" ***INVALID CHECKSUM %4.4x*** ", checksum);
+ for (i = 0; i < 6; i++)
+ printk("%c%2.2x", i ? ':' : ' ', dev->dev_addr[i]);
+ if (eeprom[16] == 0x11c7) { /* Corkscrew */
+ if (request_dma(dev->dma, "3c515")) {
+ printk(", DMA %d allocation failed", dev->dma);
+ dev->dma = 0;
+ } else
+ printk(", DMA %d", dev->dma);
+ }
+ printk(", IRQ %d\n", dev->irq);
+ /* Tell them about an invalid IRQ. */
+ if (vortex_debug && (dev->irq <= 0 || dev->irq > 15))
+ printk(" *** Warning: this IRQ is unlikely to work! ***\n");
+
+ {
+ char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
+ union wn3_config config;
+ EL3WINDOW(3);
+ vp->available_media = inw(ioaddr + Wn3_Options);
+ config.i = inl(ioaddr + Wn3_Config);
+ if (vortex_debug > 1)
+ printk(" Internal config register is %4.4x, transceivers %#x.\n",
+ config.i, inw(ioaddr + Wn3_Options));
+ printk(" %dK %s-wide RAM %s Rx:Tx split, %s%s interface.\n",
+ 8 << config.u.ram_size,
+ config.u.ram_width ? "word" : "byte",
+ ram_split[config.u.ram_split],
+ config.u.autoselect ? "autoselect/" : "",
+ media_tbl[config.u.xcvr].name);
+ dev->if_port = config.u.xcvr;
+ vp->default_media = config.u.xcvr;
+ vp->autoselect = config.u.autoselect;
+ }
+ if (vp->media_override != 7) {
+ printk(" 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;
+
+ /* We do a request_region() to register /proc/ioports info. */
+ request_region(ioaddr, CORKSCREW_TOTAL_SIZE, vp->product_name);
+
+ /* The 3c59x-specific entries in the device structure. */
+ dev->open = &vortex_open;
+ dev->hard_start_xmit = &vortex_start_xmit;
+ dev->stop = &vortex_close;
+ dev->get_stats = &vortex_get_stats;
+ dev->set_multicast_list = &set_rx_mode;
+
+ return 0;
+}
+
+
+static int
+vortex_open(struct device *dev)
+{
+ int ioaddr = dev->base_addr;
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+ union wn3_config 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.i = inl(ioaddr + Wn3_Config);
+
+ if (vp->media_override != 7) {
+ if (vortex_debug > 1)
+ printk("%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 (vortex_debug > 1)
+ printk("%s: Initial media type %s.\n",
+ dev->name, media_tbl[dev->if_port].name);
+
+ init_timer(&vp->timer);
+ vp->timer.expires = RUN_AT(media_tbl[dev->if_port].wait);
+ vp->timer.data = (unsigned long)dev;
+ vp->timer.function = &vortex_timer; /* timer handler */
+ add_timer(&vp->timer);
+ } else
+ dev->if_port = vp->default_media;
+
+ config.u.xcvr = dev->if_port;
+ outl(config.i, ioaddr + Wn3_Config);
+
+ if (vortex_debug > 1) {
+ printk("%s: vortex_open() InternalConfig %8.8x.\n",
+ dev->name, config.i);
+ }
+
+ 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, &vortex_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, &vortex_interrupt, SA_SHIRQ,
+ vp->product_name, dev)) {
+ return -EAGAIN;
+ }
+
+ if (vortex_debug > 1) {
+ EL3WINDOW(4);
+ printk("%s: vortex_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 (vortex_debug > 2)
+ printk("%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 = 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 = dev_alloc_skb(PKT_BUF_SZ);
+ vp->rx_skbuff[i] = skb;
+ if (skb == NULL)
+ break; /* Bad news! */
+ skb->dev = dev; /* Mark as being used by this device. */
+ skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
+ vp->rx_ring[i].addr = virt_to_bus(skb->tail);
+ }
+ vp->rx_ring[i-1].next = virt_to_bus(&vp->rx_ring[0]); /* Wrap the ring. */
+ outl(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] = 0;
+ outl(0, ioaddr + DownListPtr);
+ }
+ /* Set reciever mode: presumably accept b-case and phys addr only. */
+ set_rx_mode(dev);
+ outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
+
+ dev->tbusy = 0;
+ dev->interrupt = 0;
+ dev->start = 1;
+
+ 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);
+
+ MOD_INC_USE_COUNT;
+
+ return 0;
+}
+
+static void vortex_timer(unsigned long data)
+{
+#ifdef AUTOMEDIA
+ struct device *dev = (struct device *)data;
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+ int ioaddr = dev->base_addr;
+ unsigned long flags;
+ int ok = 0;
+
+ if (vortex_debug > 1)
+ printk("%s: Media selection timer tick happened, %s.\n",
+ dev->name, media_tbl[dev->if_port].name);
+
+ save_flags(flags); cli(); {
+ 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 (vortex_debug > 1)
+ printk("%s: Media %s has link beat, %x.\n",
+ dev->name, media_tbl[dev->if_port].name, media_status);
+ } else if (vortex_debug > 1)
+ printk("%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 (vortex_debug > 1)
+ printk("%s: Media %s is has no indication, %x.\n",
+ dev->name, media_tbl[dev->if_port].name, media_status);
+ ok = 1;
+ }
+ if ( ! ok) {
+ union wn3_config 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 (vortex_debug > 1)
+ printk("%s: Media selection failing, using default %s port.\n",
+ dev->name, media_tbl[dev->if_port].name);
+ } else {
+ if (vortex_debug > 1)
+ printk("%s: Media selection failed, now trying %s port.\n",
+ dev->name, media_tbl[dev->if_port].name);
+ vp->timer.expires = RUN_AT(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.i = inl(ioaddr + Wn3_Config);
+ config.u.xcvr = dev->if_port;
+ outl(config.i, ioaddr + Wn3_Config);
+
+ outw(dev->if_port == 3 ? StartCoax : StopCoax, ioaddr + EL3_CMD);
+ }
+ EL3WINDOW(old_window);
+ } restore_flags(flags);
+ if (vortex_debug > 1)
+ printk("%s: Media selection timer finished, %s.\n",
+ dev->name, media_tbl[dev->if_port].name);
+
+#endif /* AUTOMEDIA*/
+ return;
+}
+
+static int
+vortex_start_xmit(struct sk_buff *skb, struct device *dev)
+{
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+ int ioaddr = dev->base_addr;
+
+ if (dev->tbusy) {
+ int tickssofar = jiffies - dev->trans_start;
+ int i;
+
+ /* Min. wait before assuming a Tx failed == 400ms. */
+
+ if (tickssofar < 400*HZ/1000) /* We probably aren't empty. */
+ return 1;
+ printk("%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)
+ printk("%s: Transmitter encountered 16 collisions -- network"
+ " network cable problem?\n", dev->name);
+#ifndef final_version
+ printk(" 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);
+ printk(" Down list %8.8x vs. %p.\n", inl(ioaddr + DownListPtr),
+ &vp->tx_ring[0]);
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ printk(" %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);
+ dev->trans_start = jiffies;
+ /* dev->tbusy = 0;*/
+ vp->stats.tx_errors++;
+ vp->stats.tx_dropped++;
+ return 0; /* Yes, silently *drop* the packet! */
+ }
+
+ /* Block a timer-based transmit from overlapping. This could better be
+ done with atomic_swap(1, dev->tbusy), but set_bit() works as well.
+ If this ever occurs the queue layer is doing something evil! */
+ if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) {
+ printk("%s: Transmitter access conflict.\n", dev->name);
+ return 1;
+ }
+
+ 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, i;
+
+ if (vp->tx_full) /* No room to transmit with */
+ return 1;
+ if (vp->cur_tx != 0)
+ prev_entry = &vp->tx_ring[(vp->cur_tx-1) % TX_RING_SIZE];
+ else
+ prev_entry = NULL;
+ if (vortex_debug > 3)
+ printk("%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 = virt_to_bus(skb->data);
+ vp->tx_ring[entry].length = skb->len | 0x80000000;
+ vp->tx_ring[entry].status = skb->len | 0x80000000;
+
+ save_flags(flags);
+ cli();
+ 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 = virt_to_bus(&vp->tx_ring[entry]);
+ if (inl(ioaddr + DownListPtr) == 0) {
+ outl(virt_to_bus(&vp->tx_ring[entry]), ioaddr + DownListPtr);
+ queued_packet++;
+ }
+ outw(DownUnstall, ioaddr + EL3_CMD);
+ restore_flags(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;
+ dev->tbusy = 0;
+ }
+ dev->trans_start = jiffies;
+ return 0;
+ }
+ /* Put out the doubleword header... */
+ outl(skb->len, ioaddr + TX_FIFO);
+#ifdef VORTEX_BUS_MASTER
+ if (vp->bus_master) {
+ /* Set the bus-master controller to transfer the packet. */
+ outl((int)(skb->data), ioaddr + Wn7_MasterAddr);
+ outw((skb->len + 3) & ~3, ioaddr + Wn7_MasterLen);
+ vp->tx_skb = skb;
+ outw(StartDMADown, ioaddr + EL3_CMD);
+ /* dev->tbusy will be cleared 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) {
+ dev->tbusy = 0;
+ } 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) {
+ dev->tbusy = 0;
+ } else
+ /* Interrupt us when the FIFO has room for max-sized packet. */
+ outw(SetTxThreshold + (1536>>2), ioaddr + EL3_CMD);
+#endif /* bus master */
+
+ dev->trans_start = jiffies;
+
+ /* 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 (vortex_debug > 2)
+ printk("%s: Tx error, status %2.2x.\n",
+ dev->name, tx_status);
+ if (tx_status & 0x04) vp->stats.tx_fifo_errors++;
+ if (tx_status & 0x38) vp->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 0;
+}
+
+/* The interrupt handler does all of the Rx thread work and cleans up
+ after the Tx thread. */
+static void vortex_interrupt IRQ(int irq, void *dev_id, struct pt_regs *regs)
+{
+ /* Use the now-standard shared IRQ implementation. */
+ struct device *dev = dev_id;
+ struct vortex_private *lp;
+ int ioaddr, status;
+ int latency;
+ int i = max_interrupt_work;
+
+ if (test_and_set_bit(0, (void*)&dev->interrupt)) {
+ printk("%s: Re-entering the interrupt handler.\n", dev->name);
+ return;
+ }
+
+ ioaddr = dev->base_addr;
+ latency = inb(ioaddr + Timer);
+ lp = (struct vortex_private *)dev->priv;
+
+ status = inw(ioaddr + EL3_STATUS);
+
+ if (vortex_debug > 4)
+ printk("%s: interrupt, status %4.4x, timer %d.\n", dev->name,
+ status, latency);
+ if ((status & 0xE000) != 0xE000) {
+ static int donedidthis=0;
+ /* 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) {
+ printk("%s: Bogus interrupt, bailing. Status %4.4x, start=%d.\n",
+ dev->name, status, dev->start);
+ FREE_IRQ(dev->irq, dev);
+ }
+ }
+
+ do {
+ if (vortex_debug > 5)
+ printk("%s: In interrupt loop, status %4.4x.\n",
+ dev->name, status);
+ if (status & RxComplete)
+ vortex_rx(dev);
+
+ if (status & TxAvailable) {
+ if (vortex_debug > 5)
+ printk(" TX room bit was handled.\n");
+ /* There's room in the FIFO for a full-sized packet. */
+ outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
+ dev->tbusy = 0;
+ mark_bh(NET_BH);
+ }
+ 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) ==
+ virt_to_bus(&lp->tx_ring[entry]))
+ break; /* It still hasn't been processed. */
+ if (lp->tx_skbuff[entry]) {
+ dev_kfree_skb(lp->tx_skbuff[entry]);
+ lp->tx_skbuff[entry] = 0;
+ }
+ 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;
+ dev->tbusy = 0;
+ mark_bh(NET_BH);
+ }
+ }
+#ifdef VORTEX_BUS_MASTER
+ if (status & DMADone) {
+ outw(0x1000, ioaddr + Wn7_MasterStatus); /* Ack the event. */
+ dev->tbusy = 0;
+ dev_kfree_skb (lp->tx_skb); /* Release the transfered buffer */
+ mark_bh(NET_BH);
+ }
+#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. */
+ vortex_rx(dev);
+ outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
+ }
+ if (status & StatsFull) { /* Empty statistics. */
+ static int DoneDidThat = 0;
+ if (vortex_debug > 4)
+ printk("%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;
+ printk("%s: Updating stats failed, disabling stats as an"
+ " interrupt source.\n", dev->name);
+ for (win = 0; win < 8; win++) {
+ EL3WINDOW(win);
+ printk("\n Vortex window %d:", win);
+ for (reg = 0; reg < 16; reg++)
+ printk(" %2.2x", inb(ioaddr+reg));
+ }
+ 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) {
+ printk("%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));
+
+ if (vortex_debug > 4)
+ printk("%s: exiting interrupt, status %4.4x.\n", dev->name, status);
+
+ dev->interrupt = 0;
+ return;
+}
+
+static int
+vortex_rx(struct device *dev)
+{
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+ int ioaddr = dev->base_addr;
+ int i;
+ short rx_status;
+
+ if (vortex_debug > 5)
+ printk(" 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 (vortex_debug > 2)
+ printk(" Rx error: status %2.2x.\n", rx_error);
+ vp->stats.rx_errors++;
+ if (rx_error & 0x01) vp->stats.rx_over_errors++;
+ if (rx_error & 0x02) vp->stats.rx_length_errors++;
+ if (rx_error & 0x04) vp->stats.rx_frame_errors++;
+ if (rx_error & 0x08) vp->stats.rx_crc_errors++;
+ if (rx_error & 0x10) vp->stats.rx_length_errors++;
+ } else {
+ /* The packet length: up to 4.5K!. */
+ short pkt_len = rx_status & 0x1fff;
+ struct sk_buff *skb;
+
+ skb = DEV_ALLOC_SKB(pkt_len + 5);
+ if (vortex_debug > 4)
+ printk("Receiving packet size %d status %4.4x.\n",
+ pkt_len, rx_status);
+ if (skb != NULL) {
+ skb->dev = dev;
+#if LINUX_VERSION_CODE >= 0x10300
+ 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);
+#else
+ skb->len = pkt_len;
+ /* 'skb->data' points to the start of sk_buff data area. */
+ insl(ioaddr + RX_FIFO, skb->data, (pkt_len + 3) >> 2);
+ outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
+#endif /* KERNEL_1_3_0 */
+ netif_rx(skb);
+ dev->last_rx = jiffies;
+ vp->stats.rx_packets++;
+ /* 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 (vortex_debug)
+ printk("%s: Couldn't allocate a sk_buff of size %d.\n",
+ dev->name, pkt_len);
+ }
+ outw(RxDiscard, ioaddr + EL3_CMD);
+ vp->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 device *dev)
+{
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+ int entry = vp->cur_rx % RX_RING_SIZE;
+ int ioaddr = dev->base_addr;
+ int rx_status;
+
+ if (vortex_debug > 5)
+ printk(" 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 (vortex_debug > 2)
+ printk(" Rx error: status %2.2x.\n", rx_error);
+ vp->stats.rx_errors++;
+ if (rx_error & 0x01) vp->stats.rx_over_errors++;
+ if (rx_error & 0x02) vp->stats.rx_length_errors++;
+ if (rx_error & 0x04) vp->stats.rx_frame_errors++;
+ if (rx_error & 0x08) vp->stats.rx_crc_errors++;
+ if (rx_error & 0x10) vp->stats.rx_length_errors++;
+ } else {
+ /* The packet length: up to 4.5K!. */
+ short pkt_len = rx_status & 0x1fff;
+ struct sk_buff *skb;
+
+ if (vortex_debug > 4)
+ printk("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 = DEV_ALLOC_SKB(pkt_len + 2)) != 0) {
+ skb->dev = dev;
+ skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
+ /* 'skb_put()' points to the start of sk_buff data area. */
+ memcpy(skb_put(skb, pkt_len),
+ 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 (bus_to_virt(vp->rx_ring[entry].addr) != temp)
+ printk("%s: Warning -- the skbuff addresses do not match"
+ " in boomerang_rx: %p vs. %p / %p.\n", dev->name,
+ bus_to_virt(vp->rx_ring[entry].addr),
+ skb->head, temp);
+ rx_nocopy++;
+ }
+#if LINUX_VERSION_CODE > 0x10300
+ skb->protocol = eth_type_trans(skb, dev);
+#else
+ skb->len = pkt_len;
+#endif
+ netif_rx(skb);
+ dev->last_rx = jiffies;
+ vp->stats.rx_packets++;
+ }
+ entry = (++vp->cur_rx) % RX_RING_SIZE;
+ }
+ /* Refill the Rx ring buffers. */
+ for (; vp->dirty_rx < vp->cur_rx; vp->dirty_rx++) {
+ struct sk_buff *skb;
+ entry = vp->dirty_rx % RX_RING_SIZE;
+ if (vp->rx_skbuff[entry] == NULL) {
+ skb = dev_alloc_skb(PKT_BUF_SZ);
+ if (skb == NULL)
+ break; /* Bad news! */
+ skb->dev = dev; /* Mark as being used by this device. */
+#if LINUX_VERSION_CODE > 0x10300
+ skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
+ vp->rx_ring[entry].addr = virt_to_bus(skb->tail);
+#else
+ vp->rx_ring[entry].addr = virt_to_bus(skb->data);
+#endif
+ vp->rx_skbuff[entry] = skb;
+ }
+ vp->rx_ring[entry].status = 0; /* Clear complete bit. */
+ }
+ return 0;
+}
+
+static int
+vortex_close(struct device *dev)
+{
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+ int ioaddr = dev->base_addr;
+ int i;
+
+ dev->start = 0;
+ dev->tbusy = 1;
+
+ if (vortex_debug > 1) {
+ printk("%s: vortex_close() status %4.4x, Tx status %2.2x.\n",
+ dev->name, inw(ioaddr + EL3_STATUS), inb(ioaddr + TxStatus));
+ printk("%s: vortex close stats: rx_nocopy %d rx_copy %d"
+ " tx_queued %d.\n",
+ dev->name, rx_nocopy, rx_copy, queued_packet);
+ }
+
+ del_timer(&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);
+
+#ifdef SA_SHIRQ
+ free_irq(dev->irq, dev);
+#else
+ free_irq(dev->irq);
+ irq2dev_map[dev->irq] = 0;
+#endif
+
+ 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]) {
+#if LINUX_VERSION_CODE < 0x20100
+ vp->rx_skbuff[i]->free = 1;
+#endif
+ dev_kfree_skb (vp->rx_skbuff[i]);
+ vp->rx_skbuff[i] = 0;
+ }
+ }
+ 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] = 0;
+ }
+ }
+
+ MOD_DEC_USE_COUNT;
+
+ return 0;
+}
+
+static struct enet_statistics *
+vortex_get_stats(struct device *dev)
+{
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+ unsigned long flags;
+
+ if (dev->start) {
+ save_flags(flags);
+ cli();
+ update_stats(dev->base_addr, dev);
+ restore_flags(flags);
+ }
+ return &vp->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 device *dev)
+{
+ struct vortex_private *vp = (struct vortex_private *)dev->priv;
+
+ /* Unlike the 3c5x9 we need not turn off stats updates while reading. */
+ /* Switch to the stats window, and read everything. */
+ EL3WINDOW(6);
+ vp->stats.tx_carrier_errors += inb(ioaddr + 0);
+ vp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
+ /* Multiple collisions. */ inb(ioaddr + 2);
+ vp->stats.collisions += inb(ioaddr + 3);
+ vp->stats.tx_window_errors += inb(ioaddr + 4);
+ vp->stats.rx_fifo_errors += inb(ioaddr + 5);
+ vp->stats.tx_packets += inb(ioaddr + 6);
+ vp->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);
+ return;
+}
+
+/* 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 device *dev)
+{
+ int ioaddr = dev->base_addr;
+ short new_mode;
+
+ if (dev->flags & IFF_PROMISC) {
+ if (vortex_debug > 3)
+ printk("%s: Setting promiscuous mode.\n", dev->name);
+ new_mode = SetRxFilter|RxStation|RxMulticast|RxBroadcast|RxProm;
+ } else if ((dev->mc_list) || (dev->flags & IFF_ALLMULTI)) {
+ new_mode = SetRxFilter|RxStation|RxMulticast|RxBroadcast;
+ } else
+ new_mode = SetRxFilter | RxStation | RxBroadcast;
+
+ outw(new_mode, ioaddr + EL3_CMD);
+}
+
+#ifdef MODULE
+void
+cleanup_module(void)
+{
+ struct device *next_dev;
+
+ /* No need to check MOD_IN_USE, as sys_delete_module() checks. */
+ while (root_vortex_dev) {
+ next_dev = ((struct vortex_private *)root_vortex_dev->priv)->next_module;
+ if (root_vortex_dev->dma)
+ free_dma(root_vortex_dev->dma);
+ unregister_netdev(root_vortex_dev);
+ outw(TotalReset, root_vortex_dev->base_addr + EL3_CMD);
+ release_region(root_vortex_dev->base_addr, CORKSCREW_TOTAL_SIZE);
+ kfree(root_vortex_dev);
+ root_vortex_dev = next_dev;
+ }
+}
+#endif /* MODULE */
+
+/*
+ * Local variables:
+ * compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c 3c515.c"
+ * c-indent-level: 4
+ * tab-width: 4
+ * End:
+ */
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TCL-scripts by Sam Shen, slshen@lbl.gov