| /* |
| 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 DRV_VERSION "0.99t-ac" |
| #define DRV_RELDATE "28-Oct-2002" |
| |
| static char *version = |
| DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " becker@scyld.com and others\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 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. */ |
| |
| #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 <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"); |
| MODULE_VERSION(DRV_VERSION); |
| |
| /* "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); |
| |
| int init_module(void) |
| { |
| int found = 0; |
| if (debug >= 0) |
| corkscrew_debug = debug; |
| if (corkscrew_debug) |
| pr_debug("%s", version); |
| while (corkscrew_scan(-1)) |
| found++; |
| return found ? 0 : -ENODEV; |
| } |
| |
| #else |
| struct net_device *tc515_probe(int unit) |
| { |
| struct net_device *dev = corkscrew_scan(unit); |
| static int printed; |
| |
| if (!dev) |
| return ERR_PTR(-ENODEV); |
| |
| if (corkscrew_debug > 0 && !printed) { |
| printed = 1; |
| pr_debug("%s", version); |
| } |
| |
| 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 */ |
| 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++) { |
| __be16 *phys_addr = (__be16 *) 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) |
| 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 = from_timer(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((int) (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); |
| } |
| |
| del_timer_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) |
| { |
| strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
| strlcpy(info->version, DRV_VERSION, sizeof(info->version)); |
| 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 |
| void cleanup_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); |
| } |
| } |
| #endif /* MODULE */ |