| /* via-rhine.c: A Linux Ethernet device driver for VIA Rhine family chips. */ |
| /* |
| Written 1998-2001 by Donald Becker. |
| |
| Current Maintainer: Roger Luethi <rl@hellgate.ch> |
| |
| This software may be used and distributed according to the terms of |
| the GNU General Public License (GPL), incorporated herein by reference. |
| Drivers based on or derived from this code fall under the GPL and must |
| retain the authorship, copyright and license notice. This file is not |
| a complete program and may only be used when the entire operating |
| system is licensed under the GPL. |
| |
| This driver is designed for the VIA VT86C100A Rhine-I. |
| It also works with the Rhine-II (6102) and Rhine-III (6105/6105L/6105LOM |
| and management NIC 6105M). |
| |
| The author may be reached as becker@scyld.com, or C/O |
| Scyld Computing Corporation |
| 410 Severn Ave., Suite 210 |
| Annapolis MD 21403 |
| |
| |
| This driver contains some changes from the original Donald Becker |
| version. He may or may not be interested in bug reports on this |
| code. You can find his versions at: |
| http://www.scyld.com/network/via-rhine.html |
| |
| |
| Linux kernel version history: |
| |
| LK1.1.0: |
| - Jeff Garzik: softnet 'n stuff |
| |
| LK1.1.1: |
| - Justin Guyett: softnet and locking fixes |
| - Jeff Garzik: use PCI interface |
| |
| LK1.1.2: |
| - Urban Widmark: minor cleanups, merges from Becker 1.03a/1.04 versions |
| |
| LK1.1.3: |
| - Urban Widmark: use PCI DMA interface (with thanks to the eepro100.c |
| code) update "Theory of Operation" with |
| softnet/locking changes |
| - Dave Miller: PCI DMA and endian fixups |
| - Jeff Garzik: MOD_xxx race fixes, updated PCI resource allocation |
| |
| LK1.1.4: |
| - Urban Widmark: fix gcc 2.95.2 problem and |
| remove writel's to fixed address 0x7c |
| |
| LK1.1.5: |
| - Urban Widmark: mdio locking, bounce buffer changes |
| merges from Beckers 1.05 version |
| added netif_running_on/off support |
| |
| LK1.1.6: |
| - Urban Widmark: merges from Beckers 1.08b version (VT6102 + mdio) |
| set netif_running_on/off on startup, del_timer_sync |
| |
| LK1.1.7: |
| - Manfred Spraul: added reset into tx_timeout |
| |
| LK1.1.9: |
| - Urban Widmark: merges from Beckers 1.10 version |
| (media selection + eeprom reload) |
| - David Vrabel: merges from D-Link "1.11" version |
| (disable WOL and PME on startup) |
| |
| LK1.1.10: |
| - Manfred Spraul: use "singlecopy" for unaligned buffers |
| don't allocate bounce buffers for !ReqTxAlign cards |
| |
| LK1.1.11: |
| - David Woodhouse: Set dev->base_addr before the first time we call |
| wait_for_reset(). It's a lot happier that way. |
| Free np->tx_bufs only if we actually allocated it. |
| |
| LK1.1.12: |
| - Martin Eriksson: Allow Memory-Mapped IO to be enabled. |
| |
| LK1.1.13 (jgarzik): |
| - Add ethtool support |
| - Replace some MII-related magic numbers with constants |
| |
| LK1.1.14 (Ivan G.): |
| - fixes comments for Rhine-III |
| - removes W_MAX_TIMEOUT (unused) |
| - adds HasDavicomPhy for Rhine-I (basis: linuxfet driver; my card |
| is R-I and has Davicom chip, flag is referenced in kernel driver) |
| - sends chip_id as a parameter to wait_for_reset since np is not |
| initialized on first call |
| - changes mmio "else if (chip_id==VT6102)" to "else" so it will work |
| for Rhine-III's (documentation says same bit is correct) |
| - transmit frame queue message is off by one - fixed |
| - adds IntrNormalSummary to "Something Wicked" exclusion list |
| so normal interrupts will not trigger the message (src: Donald Becker) |
| (Roger Luethi) |
| - show confused chip where to continue after Tx error |
| - location of collision counter is chip specific |
| - allow selecting backoff algorithm (module parameter) |
| |
| LK1.1.15 (jgarzik): |
| - Use new MII lib helper generic_mii_ioctl |
| |
| LK1.1.16 (Roger Luethi) |
| - Etherleak fix |
| - Handle Tx buffer underrun |
| - Fix bugs in full duplex handling |
| - New reset code uses "force reset" cmd on Rhine-II |
| - Various clean ups |
| |
| LK1.1.17 (Roger Luethi) |
| - Fix race in via_rhine_start_tx() |
| - On errors, wait for Tx engine to turn off before scavenging |
| - Handle Tx descriptor write-back race on Rhine-II |
| - Force flushing for PCI posted writes |
| - More reset code changes |
| |
| LK1.1.18 (Roger Luethi) |
| - No filtering multicast in promisc mode (Edward Peng) |
| - Fix for Rhine-I Tx timeouts |
| |
| LK1.1.19 (Roger Luethi) |
| - Increase Tx threshold for unspecified errors |
| - Craig Brind: Zero padded aligned buffers for short packets |
| |
| */ |
| |
| #define DRV_NAME "via-rhine" |
| #define DRV_VERSION "1.1.19" |
| #define DRV_RELDATE "July-12-2003" |
| |
| |
| /* A few user-configurable values. |
| These may be modified when a driver module is loaded. */ |
| |
| static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ |
| static int max_interrupt_work = 20; |
| |
| /* Set the copy breakpoint for the copy-only-tiny-frames scheme. |
| Setting to > 1518 effectively disables this feature. */ |
| static int rx_copybreak; |
| |
| /* Select a backoff algorithm (Ethernet capture effect) */ |
| static int backoff; |
| |
| /* Used to pass the media type, etc. |
| Both 'options[]' and 'full_duplex[]' should exist for driver |
| interoperability. |
| The media type is usually passed in 'options[]'. |
| The default is autonegotiation for speed and duplex. |
| This should rarely be overridden. |
| Use option values 0x10/0x20 for 10Mbps, 0x100,0x200 for 100Mbps. |
| Use option values 0x10 and 0x100 for forcing half duplex fixed speed. |
| Use option values 0x20 and 0x200 for forcing full duplex operation. |
| */ |
| #define MAX_UNITS 8 /* More are supported, limit only on options */ |
| static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
| static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
| |
| /* Maximum number of multicast addresses to filter (vs. rx-all-multicast). |
| The Rhine has a 64 element 8390-like hash table. */ |
| static const int multicast_filter_limit = 32; |
| |
| |
| /* Operational parameters that are set at compile time. */ |
| |
| /* Keep the ring sizes a power of two for compile efficiency. |
| The compiler will convert <unsigned>'%'<2^N> into a bit mask. |
| Making the Tx ring too large decreases the effectiveness of channel |
| bonding and packet priority. |
| There are no ill effects from too-large receive rings. */ |
| #define TX_RING_SIZE 16 |
| #define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ |
| #define RX_RING_SIZE 16 |
| |
| |
| /* Operational parameters that usually are not changed. */ |
| |
| /* Time in jiffies before concluding the transmitter is hung. */ |
| #define TX_TIMEOUT (2*HZ) |
| |
| #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ |
| |
| #if !defined(__OPTIMIZE__) || !defined(__KERNEL__) |
| #warning You must compile this file with the correct options! |
| #warning See the last lines of the source file. |
| #error You must compile this driver with "-O". |
| #endif |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/string.h> |
| #include <linux/timer.h> |
| #include <linux/errno.h> |
| #include <linux/ioport.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| #include <linux/pci.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/skbuff.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/mii.h> |
| #include <linux/ethtool.h> |
| #include <linux/crc32.h> |
| #include <asm/processor.h> /* Processor type for cache alignment. */ |
| #include <asm/bitops.h> |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| #include <asm/uaccess.h> |
| |
| /* These identify the driver base version and may not be removed. */ |
| static char version[] __devinitdata = |
| KERN_INFO DRV_NAME ".c:v1.10-LK" DRV_VERSION " " DRV_RELDATE " Written by Donald Becker\n" |
| KERN_INFO " http://www.scyld.com/network/via-rhine.html\n"; |
| |
| static char shortname[] = DRV_NAME; |
| |
| |
| /* This driver was written to use PCI memory space, however most versions |
| of the Rhine only work correctly with I/O space accesses. */ |
| #ifdef CONFIG_VIA_RHINE_MMIO |
| #define USE_MEM |
| #else |
| #define USE_IO |
| #undef readb |
| #undef readw |
| #undef readl |
| #undef writeb |
| #undef writew |
| #undef writel |
| #define readb inb |
| #define readw inw |
| #define readl inl |
| #define writeb outb |
| #define writew outw |
| #define writel outl |
| #endif |
| |
| MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); |
| MODULE_DESCRIPTION("VIA Rhine PCI Fast Ethernet driver"); |
| MODULE_LICENSE("GPL"); |
| |
| MODULE_PARM(max_interrupt_work, "i"); |
| MODULE_PARM(debug, "i"); |
| MODULE_PARM(rx_copybreak, "i"); |
| MODULE_PARM(backoff, "i"); |
| MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i"); |
| MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i"); |
| MODULE_PARM_DESC(max_interrupt_work, "VIA Rhine maximum events handled per interrupt"); |
| MODULE_PARM_DESC(debug, "VIA Rhine debug level (0-7)"); |
| MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames"); |
| MODULE_PARM_DESC(backoff, "VIA Rhine: Bits 0-3: backoff algorithm"); |
| MODULE_PARM_DESC(options, "VIA Rhine: Bits 0-3: media type, bit 17: full duplex"); |
| MODULE_PARM_DESC(full_duplex, "VIA Rhine full duplex setting(s) (1)"); |
| |
| /* |
| Theory of Operation |
| |
| I. Board Compatibility |
| |
| This driver is designed for the VIA 86c100A Rhine-II PCI Fast Ethernet |
| controller. |
| |
| II. Board-specific settings |
| |
| Boards with this chip are functional only in a bus-master PCI slot. |
| |
| Many operational settings are loaded from the EEPROM to the Config word at |
| offset 0x78. For most of these settings, this driver assumes that they are |
| correct. |
| If this driver is compiled to use PCI memory space operations the EEPROM |
| must be configured to enable memory ops. |
| |
| III. Driver operation |
| |
| IIIa. Ring buffers |
| |
| This driver uses two statically allocated fixed-size descriptor lists |
| formed into rings by a branch from the final descriptor to the beginning of |
| the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. |
| |
| IIIb/c. Transmit/Receive Structure |
| |
| This driver attempts to use a zero-copy receive and transmit scheme. |
| |
| Alas, all data buffers are required to start on a 32 bit boundary, so |
| the driver must often copy transmit packets into bounce buffers. |
| |
| The driver allocates full frame size skbuffs for the Rx ring buffers at |
| open() time and passes the skb->data field to the chip as receive data |
| buffers. When an incoming frame is less than RX_COPYBREAK bytes long, |
| a fresh skbuff is allocated and the frame is copied to the new skbuff. |
| When the incoming frame is larger, the skbuff is passed directly up the |
| protocol stack. Buffers consumed this way are replaced by newly allocated |
| skbuffs in the last phase of via_rhine_rx(). |
| |
| The RX_COPYBREAK value is chosen to trade-off the memory wasted by |
| using a full-sized skbuff for small frames vs. the copying costs of larger |
| frames. New boards are typically used in generously configured machines |
| and the underfilled buffers have negligible impact compared to the benefit of |
| a single allocation size, so the default value of zero results in never |
| copying packets. When copying is done, the cost is usually mitigated by using |
| a combined copy/checksum routine. Copying also preloads the cache, which is |
| most useful with small frames. |
| |
| Since the VIA chips are only able to transfer data to buffers on 32 bit |
| boundaries, the IP header at offset 14 in an ethernet frame isn't |
| longword aligned for further processing. Copying these unaligned buffers |
| has the beneficial effect of 16-byte aligning the IP header. |
| |
| IIId. 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->priv->lock spinlock. The other thread is the interrupt handler, which |
| is single threaded by the hardware and interrupt handling software. |
| |
| The send packet thread has partial control over the Tx ring. It locks the |
| dev->priv->lock whenever it's queuing a Tx packet. If the next slot in the ring |
| is not available it stops the transmit queue by calling netif_stop_queue. |
| |
| The interrupt handler has exclusive control over the Rx ring and records stats |
| from the Tx ring. After reaping the stats, it marks the Tx queue entry as |
| empty by incrementing the dirty_tx mark. If at least half of the entries in |
| the Rx ring are available the transmit queue is woken up if it was stopped. |
| |
| IV. Notes |
| |
| IVb. References |
| |
| Preliminary VT86C100A manual from http://www.via.com.tw/ |
| http://www.scyld.com/expert/100mbps.html |
| http://www.scyld.com/expert/NWay.html |
| ftp://ftp.via.com.tw/public/lan/Products/NIC/VT86C100A/Datasheet/VT86C100A03.pdf |
| ftp://ftp.via.com.tw/public/lan/Products/NIC/VT6102/Datasheet/VT6102_021.PDF |
| |
| |
| IVc. Errata |
| |
| The VT86C100A manual is not reliable information. |
| The 3043 chip does not handle unaligned transmit or receive buffers, resulting |
| in significant performance degradation for bounce buffer copies on transmit |
| and unaligned IP headers on receive. |
| The chip does not pad to minimum transmit length. |
| |
| */ |
| |
| |
| /* This table drives the PCI probe routines. It's mostly boilerplate in all |
| of the drivers, and will likely be provided by some future kernel. |
| Note the matching code -- the first table entry matchs all 56** cards but |
| second only the 1234 card. |
| */ |
| |
| enum pci_flags_bit { |
| PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4, |
| PCI_ADDR0=0x10<<0, PCI_ADDR1=0x10<<1, PCI_ADDR2=0x10<<2, PCI_ADDR3=0x10<<3, |
| }; |
| |
| enum via_rhine_chips { |
| VT86C100A = 0, |
| VT6102, |
| VT6105, |
| VT6105M |
| }; |
| |
| struct via_rhine_chip_info { |
| const char *name; |
| u16 pci_flags; |
| int io_size; |
| int drv_flags; |
| }; |
| |
| |
| enum chip_capability_flags { |
| CanHaveMII=1, HasESIPhy=2, HasDavicomPhy=4, |
| ReqTxAlign=0x10, HasWOL=0x20, }; |
| |
| #ifdef USE_MEM |
| #define RHINE_IOTYPE (PCI_USES_MEM | PCI_USES_MASTER | PCI_ADDR1) |
| #else |
| #define RHINE_IOTYPE (PCI_USES_IO | PCI_USES_MASTER | PCI_ADDR0) |
| #endif |
| /* Beware of PCI posted writes */ |
| #define IOSYNC do { readb(dev->base_addr + StationAddr); } while (0) |
| |
| /* directly indexed by enum via_rhine_chips, above */ |
| static struct via_rhine_chip_info via_rhine_chip_info[] __devinitdata = |
| { |
| { "VIA VT86C100A Rhine", RHINE_IOTYPE, 128, |
| CanHaveMII | ReqTxAlign | HasDavicomPhy }, |
| { "VIA VT6102 Rhine-II", RHINE_IOTYPE, 256, |
| CanHaveMII | HasWOL }, |
| { "VIA VT6105 Rhine-III", RHINE_IOTYPE, 256, |
| CanHaveMII | HasWOL }, |
| { "VIA VT6105M Rhine-III", RHINE_IOTYPE, 256, |
| CanHaveMII | HasWOL }, |
| }; |
| |
| static struct pci_device_id via_rhine_pci_tbl[] = |
| { |
| {0x1106, 0x3043, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VT86C100A}, |
| {0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VT6102}, |
| {0x1106, 0x3106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VT6105}, /* 6105{,L,LOM} */ |
| {0x1106, 0x3053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, VT6105M}, |
| {0,} /* terminate list */ |
| }; |
| MODULE_DEVICE_TABLE(pci, via_rhine_pci_tbl); |
| |
| |
| /* Offsets to the device registers. */ |
| enum register_offsets { |
| StationAddr=0x00, RxConfig=0x06, TxConfig=0x07, ChipCmd=0x08, |
| IntrStatus=0x0C, IntrEnable=0x0E, |
| MulticastFilter0=0x10, MulticastFilter1=0x14, |
| RxRingPtr=0x18, TxRingPtr=0x1C, GFIFOTest=0x54, |
| MIIPhyAddr=0x6C, MIIStatus=0x6D, PCIBusConfig=0x6E, |
| MIICmd=0x70, MIIRegAddr=0x71, MIIData=0x72, MACRegEEcsr=0x74, |
| ConfigA=0x78, ConfigB=0x79, ConfigC=0x7A, ConfigD=0x7B, |
| RxMissed=0x7C, RxCRCErrs=0x7E, MiscCmd=0x81, |
| StickyHW=0x83, IntrStatus2=0x84, WOLcrClr=0xA4, WOLcgClr=0xA7, |
| PwrcsrClr=0xAC, |
| }; |
| |
| /* Bits in ConfigD */ |
| enum backoff_bits { |
| BackOptional=0x01, BackModify=0x02, |
| BackCaptureEffect=0x04, BackRandom=0x08 |
| }; |
| |
| #ifdef USE_MEM |
| /* Registers we check that mmio and reg are the same. */ |
| int mmio_verify_registers[] = { |
| RxConfig, TxConfig, IntrEnable, ConfigA, ConfigB, ConfigC, ConfigD, |
| 0 |
| }; |
| #endif |
| |
| /* Bits in the interrupt status/mask registers. */ |
| enum intr_status_bits { |
| IntrRxDone=0x0001, IntrRxErr=0x0004, IntrRxEmpty=0x0020, |
| IntrTxDone=0x0002, IntrTxError=0x0008, IntrTxUnderrun=0x0210, |
| IntrPCIErr=0x0040, |
| IntrStatsMax=0x0080, IntrRxEarly=0x0100, |
| IntrRxOverflow=0x0400, IntrRxDropped=0x0800, IntrRxNoBuf=0x1000, |
| IntrTxAborted=0x2000, IntrLinkChange=0x4000, |
| IntrRxWakeUp=0x8000, |
| IntrNormalSummary=0x0003, IntrAbnormalSummary=0xC260, |
| IntrTxDescRace=0x080000, /* mapped from IntrStatus2 */ |
| IntrTxErrSummary=0x082218, |
| }; |
| |
| /* The Rx and Tx buffer descriptors. */ |
| struct rx_desc { |
| s32 rx_status; |
| u32 desc_length; /* Chain flag, Buffer/frame length */ |
| u32 addr; |
| u32 next_desc; |
| }; |
| struct tx_desc { |
| s32 tx_status; |
| u32 desc_length; /* Chain flag, Tx Config, Frame length */ |
| u32 addr; |
| u32 next_desc; |
| }; |
| |
| /* Initial value for tx_desc.desc_length, Buffer size goes to bits 0-10 */ |
| #define TXDESC 0x00e08000 |
| |
| enum rx_status_bits { |
| RxOK=0x8000, RxWholePkt=0x0300, RxErr=0x008F |
| }; |
| |
| /* Bits in *_desc.*_status */ |
| enum desc_status_bits { |
| DescOwn=0x80000000 |
| }; |
| |
| /* Bits in ChipCmd. */ |
| enum chip_cmd_bits { |
| CmdInit=0x0001, CmdStart=0x0002, CmdStop=0x0004, CmdRxOn=0x0008, |
| CmdTxOn=0x0010, CmdTxDemand=0x0020, CmdRxDemand=0x0040, |
| CmdEarlyRx=0x0100, CmdEarlyTx=0x0200, CmdFDuplex=0x0400, |
| CmdNoTxPoll=0x0800, CmdReset=0x8000, |
| }; |
| |
| #define MAX_MII_CNT 4 |
| struct netdev_private { |
| /* Descriptor rings */ |
| struct rx_desc *rx_ring; |
| struct tx_desc *tx_ring; |
| dma_addr_t rx_ring_dma; |
| dma_addr_t tx_ring_dma; |
| |
| /* The addresses of receive-in-place skbuffs. */ |
| struct sk_buff *rx_skbuff[RX_RING_SIZE]; |
| dma_addr_t rx_skbuff_dma[RX_RING_SIZE]; |
| |
| /* The saved address of a sent-in-place packet/buffer, for later free(). */ |
| struct sk_buff *tx_skbuff[TX_RING_SIZE]; |
| dma_addr_t tx_skbuff_dma[TX_RING_SIZE]; |
| |
| /* Tx bounce buffers */ |
| unsigned char *tx_buf[TX_RING_SIZE]; |
| unsigned char *tx_bufs; |
| dma_addr_t tx_bufs_dma; |
| |
| struct pci_dev *pdev; |
| struct net_device_stats stats; |
| struct timer_list timer; /* Media monitoring timer. */ |
| spinlock_t lock; |
| |
| /* Frequently used values: keep some adjacent for cache effect. */ |
| int chip_id, drv_flags; |
| struct rx_desc *rx_head_desc; |
| unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ |
| unsigned int cur_tx, dirty_tx; |
| unsigned int rx_buf_sz; /* Based on MTU+slack. */ |
| u16 chip_cmd; /* Current setting for ChipCmd */ |
| |
| /* These values are keep track of the transceiver/media in use. */ |
| unsigned int default_port:4; /* Last dev->if_port value. */ |
| u8 tx_thresh, rx_thresh; |
| |
| /* MII transceiver section. */ |
| unsigned char phys[MAX_MII_CNT]; /* MII device addresses. */ |
| unsigned int mii_cnt; /* number of MIIs found, but only the first one is used */ |
| int last_duplex; /* last checked duplex */ |
| struct mii_if_info mii_if; |
| }; |
| |
| static int mdio_read(struct net_device *dev, int phy_id, int location); |
| static void mdio_write(struct net_device *dev, int phy_id, int location, int value); |
| static int via_rhine_open(struct net_device *dev); |
| static void via_rhine_check_duplex(struct net_device *dev); |
| static void via_rhine_timer(unsigned long data); |
| static void via_rhine_tx_timeout(struct net_device *dev); |
| static int via_rhine_start_tx(struct sk_buff *skb, struct net_device *dev); |
| static irqreturn_t via_rhine_interrupt(int irq, void *dev_instance, struct pt_regs *regs); |
| static void via_rhine_tx(struct net_device *dev); |
| static void via_rhine_rx(struct net_device *dev); |
| static void via_rhine_error(struct net_device *dev, int intr_status); |
| static void via_rhine_set_rx_mode(struct net_device *dev); |
| static struct net_device_stats *via_rhine_get_stats(struct net_device *dev); |
| static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| static struct ethtool_ops netdev_ethtool_ops; |
| static int via_rhine_close(struct net_device *dev); |
| |
| static inline u32 get_intr_status(struct net_device *dev) |
| { |
| long ioaddr = dev->base_addr; |
| struct netdev_private *np = dev->priv; |
| u32 intr_status; |
| |
| intr_status = readw(ioaddr + IntrStatus); |
| /* On Rhine-II, Bit 3 indicates Tx descriptor write-back race. */ |
| if (np->chip_id == VT6102) |
| intr_status |= readb(ioaddr + IntrStatus2) << 16; |
| return intr_status; |
| } |
| |
| static void wait_for_reset(struct net_device *dev, int chip_id, char *name) |
| { |
| long ioaddr = dev->base_addr; |
| int boguscnt = 20; |
| |
| IOSYNC; |
| |
| if (readw(ioaddr + ChipCmd) & CmdReset) { |
| printk(KERN_INFO "%s: Reset not complete yet. " |
| "Trying harder.\n", name); |
| |
| /* Rhine-II needs to be forced sometimes */ |
| if (chip_id == VT6102) |
| writeb(0x40, ioaddr + MiscCmd); |
| |
| /* VT86C100A may need long delay after reset (dlink) */ |
| /* Seen on Rhine-II as well (rl) */ |
| while ((readw(ioaddr + ChipCmd) & CmdReset) && --boguscnt) |
| udelay(5); |
| |
| } |
| |
| if (debug > 1) |
| printk(KERN_INFO "%s: Reset %s.\n", name, |
| boguscnt ? "succeeded" : "failed"); |
| } |
| |
| #ifdef USE_MEM |
| static void __devinit enable_mmio(long ioaddr, int chip_id) |
| { |
| int n; |
| if (chip_id == VT86C100A) { |
| /* More recent docs say that this bit is reserved ... */ |
| n = inb(ioaddr + ConfigA) | 0x20; |
| outb(n, ioaddr + ConfigA); |
| } else { |
| n = inb(ioaddr + ConfigD) | 0x80; |
| outb(n, ioaddr + ConfigD); |
| } |
| } |
| #endif |
| |
| static void __devinit reload_eeprom(long ioaddr) |
| { |
| int i; |
| outb(0x20, ioaddr + MACRegEEcsr); |
| /* Typically 2 cycles to reload. */ |
| for (i = 0; i < 150; i++) |
| if (! (inb(ioaddr + MACRegEEcsr) & 0x20)) |
| break; |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| static void via_rhine_poll(struct net_device *dev) |
| { |
| disable_irq(dev->irq); |
| via_rhine_interrupt(dev->irq, (void *)dev, NULL); |
| enable_irq(dev->irq); |
| } |
| #endif |
| |
| static int __devinit via_rhine_init_one (struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| struct net_device *dev; |
| struct netdev_private *np; |
| int i, option; |
| int chip_id = (int) ent->driver_data; |
| static int card_idx = -1; |
| long ioaddr; |
| long memaddr; |
| int io_size; |
| int pci_flags; |
| #ifdef USE_MEM |
| long ioaddr0; |
| #endif |
| |
| /* when built into the kernel, we only print version if device is found */ |
| #ifndef MODULE |
| static int printed_version; |
| if (!printed_version++) |
| printk(version); |
| #endif |
| |
| card_idx++; |
| option = card_idx < MAX_UNITS ? options[card_idx] : 0; |
| io_size = via_rhine_chip_info[chip_id].io_size; |
| pci_flags = via_rhine_chip_info[chip_id].pci_flags; |
| |
| if (pci_enable_device (pdev)) |
| goto err_out; |
| |
| /* this should always be supported */ |
| if (pci_set_dma_mask(pdev, 0xffffffff)) { |
| printk(KERN_ERR "32-bit PCI DMA addresses not supported by the card!?\n"); |
| goto err_out; |
| } |
| |
| /* sanity check */ |
| if ((pci_resource_len (pdev, 0) < io_size) || |
| (pci_resource_len (pdev, 1) < io_size)) { |
| printk (KERN_ERR "Insufficient PCI resources, aborting\n"); |
| goto err_out; |
| } |
| |
| ioaddr = pci_resource_start (pdev, 0); |
| memaddr = pci_resource_start (pdev, 1); |
| |
| if (pci_flags & PCI_USES_MASTER) |
| pci_set_master (pdev); |
| |
| dev = alloc_etherdev(sizeof(*np)); |
| if (dev == NULL) { |
| printk (KERN_ERR "init_ethernet failed for card #%d\n", card_idx); |
| goto err_out; |
| } |
| SET_MODULE_OWNER(dev); |
| SET_NETDEV_DEV(dev, &pdev->dev); |
| |
| if (pci_request_regions(pdev, shortname)) |
| goto err_out_free_netdev; |
| |
| #ifdef USE_MEM |
| ioaddr0 = ioaddr; |
| enable_mmio(ioaddr0, chip_id); |
| |
| ioaddr = (long) ioremap (memaddr, io_size); |
| if (!ioaddr) { |
| printk (KERN_ERR "ioremap failed for device %s, region 0x%X @ 0x%lX\n", |
| pci_name(pdev), io_size, memaddr); |
| goto err_out_free_res; |
| } |
| |
| /* Check that selected MMIO registers match the PIO ones */ |
| i = 0; |
| while (mmio_verify_registers[i]) { |
| int reg = mmio_verify_registers[i++]; |
| unsigned char a = inb(ioaddr0+reg); |
| unsigned char b = readb(ioaddr+reg); |
| if (a != b) { |
| printk (KERN_ERR "MMIO do not match PIO [%02x] (%02x != %02x)\n", |
| reg, a, b); |
| goto err_out_unmap; |
| } |
| } |
| #endif |
| |
| /* D-Link provided reset code (with comment additions) */ |
| if (via_rhine_chip_info[chip_id].drv_flags & HasWOL) { |
| unsigned char byOrgValue; |
| |
| /* clear sticky bit before reset & read ethernet address */ |
| byOrgValue = readb(ioaddr + StickyHW); |
| byOrgValue = byOrgValue & 0xFC; |
| writeb(byOrgValue, ioaddr + StickyHW); |
| |
| /* (bits written are cleared?) */ |
| /* disable force PME-enable */ |
| writeb(0x80, ioaddr + WOLcgClr); |
| /* disable power-event config bit */ |
| writeb(0xFF, ioaddr + WOLcrClr); |
| /* clear power status (undocumented in vt6102 docs?) */ |
| writeb(0xFF, ioaddr + PwrcsrClr); |
| } |
| |
| /* Reset the chip to erase previous misconfiguration. */ |
| writew(CmdReset, ioaddr + ChipCmd); |
| |
| dev->base_addr = ioaddr; |
| wait_for_reset(dev, chip_id, shortname); |
| |
| /* Reload the station address from the EEPROM. */ |
| #ifdef USE_IO |
| reload_eeprom(ioaddr); |
| #else |
| reload_eeprom(ioaddr0); |
| /* Reloading from eeprom overwrites cfgA-D, so we must re-enable MMIO. |
| If reload_eeprom() was done first this could be avoided, but it is |
| not known if that still works with the "win98-reboot" problem. */ |
| enable_mmio(ioaddr0, chip_id); |
| #endif |
| |
| for (i = 0; i < 6; i++) |
| dev->dev_addr[i] = readb(ioaddr + StationAddr + i); |
| |
| if (!is_valid_ether_addr(dev->dev_addr)) { |
| printk(KERN_ERR "Invalid MAC address for card #%d\n", card_idx); |
| goto err_out_unmap; |
| } |
| |
| if (chip_id == VT6102) { |
| /* |
| * for 3065D, EEPROM reloaded will cause bit 0 in MAC_REG_CFGA |
| * turned on. it makes MAC receive magic packet |
| * automatically. So, we turn it off. (D-Link) |
| */ |
| writeb(readb(ioaddr + ConfigA) & 0xFE, ioaddr + ConfigA); |
| } |
| |
| /* Select backoff algorithm */ |
| if (backoff) |
| writeb(readb(ioaddr + ConfigD) & (0xF0 | backoff), |
| ioaddr + ConfigD); |
| |
| dev->irq = pdev->irq; |
| |
| np = dev->priv; |
| spin_lock_init (&np->lock); |
| np->chip_id = chip_id; |
| np->drv_flags = via_rhine_chip_info[chip_id].drv_flags; |
| np->pdev = pdev; |
| np->mii_if.dev = dev; |
| np->mii_if.mdio_read = mdio_read; |
| np->mii_if.mdio_write = mdio_write; |
| np->mii_if.phy_id_mask = 0x1f; |
| np->mii_if.reg_num_mask = 0x1f; |
| |
| if (dev->mem_start) |
| option = dev->mem_start; |
| |
| /* The chip-specific entries in the device structure. */ |
| dev->open = via_rhine_open; |
| dev->hard_start_xmit = via_rhine_start_tx; |
| dev->stop = via_rhine_close; |
| dev->get_stats = via_rhine_get_stats; |
| dev->set_multicast_list = via_rhine_set_rx_mode; |
| dev->do_ioctl = netdev_ioctl; |
| dev->ethtool_ops = &netdev_ethtool_ops; |
| dev->tx_timeout = via_rhine_tx_timeout; |
| dev->watchdog_timeo = TX_TIMEOUT; |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| dev->poll_controller = via_rhine_poll; |
| #endif |
| if (np->drv_flags & ReqTxAlign) |
| dev->features |= NETIF_F_SG|NETIF_F_HW_CSUM; |
| |
| /* dev->name not defined before register_netdev()! */ |
| i = register_netdev(dev); |
| if (i) |
| goto err_out_unmap; |
| |
| /* The lower four bits are the media type. */ |
| if (option > 0) { |
| if (option & 0x220) |
| np->last_duplex = np->mii_if.full_duplex = 1; |
| np->default_port = option & 15; |
| } |
| if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) |
| np->last_duplex = np->mii_if.full_duplex = 1; |
| |
| if (np->mii_if.full_duplex) { |
| printk(KERN_INFO "%s: Set to forced full duplex, autonegotiation" |
| " disabled.\n", dev->name); |
| np->mii_if.force_media = 1; |
| } |
| |
| printk(KERN_INFO "%s: %s at 0x%lx, ", |
| dev->name, via_rhine_chip_info[chip_id].name, |
| (pci_flags & PCI_USES_IO) ? ioaddr : memaddr); |
| |
| for (i = 0; i < 5; i++) |
| printk("%2.2x:", dev->dev_addr[i]); |
| printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], pdev->irq); |
| |
| pci_set_drvdata(pdev, dev); |
| |
| if (np->drv_flags & CanHaveMII) { |
| int phy, phy_idx = 0; |
| np->phys[0] = 1; /* Standard for this chip. */ |
| for (phy = 1; phy < 32 && phy_idx < MAX_MII_CNT; phy++) { |
| int mii_status = mdio_read(dev, phy, 1); |
| if (mii_status != 0xffff && mii_status != 0x0000) { |
| np->phys[phy_idx++] = phy; |
| np->mii_if.advertising = mdio_read(dev, phy, 4); |
| printk(KERN_INFO "%s: MII PHY found at address %d, status " |
| "0x%4.4x advertising %4.4x Link %4.4x.\n", |
| dev->name, phy, mii_status, np->mii_if.advertising, |
| mdio_read(dev, phy, 5)); |
| |
| /* set IFF_RUNNING */ |
| if (mii_status & BMSR_LSTATUS) |
| netif_carrier_on(dev); |
| else |
| netif_carrier_off(dev); |
| |
| break; |
| } |
| } |
| np->mii_cnt = phy_idx; |
| np->mii_if.phy_id = np->phys[0]; |
| } |
| |
| /* Allow forcing the media type. */ |
| if (option > 0) { |
| if (option & 0x220) |
| np->last_duplex = np->mii_if.full_duplex = 1; |
| np->default_port = option & 0x3ff; |
| if (np->default_port & 0x330) { |
| /* FIXME: shouldn't someone check this variable? */ |
| /* np->medialock = 1; */ |
| printk(KERN_INFO " Forcing %dMbs %s-duplex operation.\n", |
| (option & 0x300 ? 100 : 10), |
| (option & 0x220 ? "full" : "half")); |
| if (np->mii_cnt) |
| mdio_write(dev, np->phys[0], MII_BMCR, |
| ((option & 0x300) ? 0x2000 : 0) | /* 100mbps? */ |
| ((option & 0x220) ? 0x0100 : 0)); /* Full duplex? */ |
| } |
| } |
| |
| return 0; |
| |
| err_out_unmap: |
| #ifdef USE_MEM |
| iounmap((void *)ioaddr); |
| err_out_free_res: |
| #endif |
| pci_release_regions(pdev); |
| err_out_free_netdev: |
| free_netdev (dev); |
| err_out: |
| return -ENODEV; |
| } |
| |
| static int alloc_ring(struct net_device* dev) |
| { |
| struct netdev_private *np = dev->priv; |
| void *ring; |
| dma_addr_t ring_dma; |
| |
| ring = pci_alloc_consistent(np->pdev, |
| RX_RING_SIZE * sizeof(struct rx_desc) + |
| TX_RING_SIZE * sizeof(struct tx_desc), |
| &ring_dma); |
| if (!ring) { |
| printk(KERN_ERR "Could not allocate DMA memory.\n"); |
| return -ENOMEM; |
| } |
| if (np->drv_flags & ReqTxAlign) { |
| np->tx_bufs = pci_alloc_consistent(np->pdev, PKT_BUF_SZ * TX_RING_SIZE, |
| &np->tx_bufs_dma); |
| if (np->tx_bufs == NULL) { |
| pci_free_consistent(np->pdev, |
| RX_RING_SIZE * sizeof(struct rx_desc) + |
| TX_RING_SIZE * sizeof(struct tx_desc), |
| ring, ring_dma); |
| return -ENOMEM; |
| } |
| } |
| |
| np->rx_ring = ring; |
| np->tx_ring = ring + RX_RING_SIZE * sizeof(struct rx_desc); |
| np->rx_ring_dma = ring_dma; |
| np->tx_ring_dma = ring_dma + RX_RING_SIZE * sizeof(struct rx_desc); |
| |
| return 0; |
| } |
| |
| void free_ring(struct net_device* dev) |
| { |
| struct netdev_private *np = dev->priv; |
| |
| pci_free_consistent(np->pdev, |
| RX_RING_SIZE * sizeof(struct rx_desc) + |
| TX_RING_SIZE * sizeof(struct tx_desc), |
| np->rx_ring, np->rx_ring_dma); |
| np->tx_ring = NULL; |
| |
| if (np->tx_bufs) |
| pci_free_consistent(np->pdev, PKT_BUF_SZ * TX_RING_SIZE, |
| np->tx_bufs, np->tx_bufs_dma); |
| |
| np->tx_bufs = NULL; |
| |
| } |
| |
| static void alloc_rbufs(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| dma_addr_t next; |
| int i; |
| |
| np->dirty_rx = np->cur_rx = 0; |
| |
| np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); |
| np->rx_head_desc = &np->rx_ring[0]; |
| next = np->rx_ring_dma; |
| |
| /* Init the ring entries */ |
| for (i = 0; i < RX_RING_SIZE; i++) { |
| np->rx_ring[i].rx_status = 0; |
| np->rx_ring[i].desc_length = cpu_to_le32(np->rx_buf_sz); |
| next += sizeof(struct rx_desc); |
| np->rx_ring[i].next_desc = cpu_to_le32(next); |
| np->rx_skbuff[i] = 0; |
| } |
| /* Mark the last entry as wrapping the ring. */ |
| np->rx_ring[i-1].next_desc = cpu_to_le32(np->rx_ring_dma); |
| |
| /* Fill in the Rx buffers. Handle allocation failure gracefully. */ |
| for (i = 0; i < RX_RING_SIZE; i++) { |
| struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); |
| np->rx_skbuff[i] = skb; |
| if (skb == NULL) |
| break; |
| skb->dev = dev; /* Mark as being used by this device. */ |
| |
| np->rx_skbuff_dma[i] = |
| pci_map_single(np->pdev, skb->tail, np->rx_buf_sz, |
| PCI_DMA_FROMDEVICE); |
| |
| np->rx_ring[i].addr = cpu_to_le32(np->rx_skbuff_dma[i]); |
| np->rx_ring[i].rx_status = cpu_to_le32(DescOwn); |
| } |
| np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); |
| } |
| |
| static void free_rbufs(struct net_device* dev) |
| { |
| struct netdev_private *np = dev->priv; |
| int i; |
| |
| /* Free all the skbuffs in the Rx queue. */ |
| for (i = 0; i < RX_RING_SIZE; i++) { |
| np->rx_ring[i].rx_status = 0; |
| np->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ |
| if (np->rx_skbuff[i]) { |
| pci_unmap_single(np->pdev, |
| np->rx_skbuff_dma[i], |
| np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| dev_kfree_skb(np->rx_skbuff[i]); |
| } |
| np->rx_skbuff[i] = 0; |
| } |
| } |
| |
| static void alloc_tbufs(struct net_device* dev) |
| { |
| struct netdev_private *np = dev->priv; |
| dma_addr_t next; |
| int i; |
| |
| np->dirty_tx = np->cur_tx = 0; |
| next = np->tx_ring_dma; |
| for (i = 0; i < TX_RING_SIZE; i++) { |
| np->tx_skbuff[i] = 0; |
| np->tx_ring[i].tx_status = 0; |
| np->tx_ring[i].desc_length = cpu_to_le32(TXDESC); |
| next += sizeof(struct tx_desc); |
| np->tx_ring[i].next_desc = cpu_to_le32(next); |
| np->tx_buf[i] = &np->tx_bufs[i * PKT_BUF_SZ]; |
| } |
| np->tx_ring[i-1].next_desc = cpu_to_le32(np->tx_ring_dma); |
| |
| } |
| |
| static void free_tbufs(struct net_device* dev) |
| { |
| struct netdev_private *np = dev->priv; |
| int i; |
| |
| for (i = 0; i < TX_RING_SIZE; i++) { |
| np->tx_ring[i].tx_status = 0; |
| np->tx_ring[i].desc_length = cpu_to_le32(TXDESC); |
| np->tx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ |
| if (np->tx_skbuff[i]) { |
| if (np->tx_skbuff_dma[i]) { |
| pci_unmap_single(np->pdev, |
| np->tx_skbuff_dma[i], |
| np->tx_skbuff[i]->len, PCI_DMA_TODEVICE); |
| } |
| dev_kfree_skb(np->tx_skbuff[i]); |
| } |
| np->tx_skbuff[i] = 0; |
| np->tx_buf[i] = 0; |
| } |
| } |
| |
| static void init_registers(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| int i; |
| |
| for (i = 0; i < 6; i++) |
| writeb(dev->dev_addr[i], ioaddr + StationAddr + i); |
| |
| /* Initialize other registers. */ |
| writew(0x0006, ioaddr + PCIBusConfig); /* Tune configuration??? */ |
| /* Configure initial FIFO thresholds. */ |
| writeb(0x20, ioaddr + TxConfig); |
| np->tx_thresh = 0x20; |
| np->rx_thresh = 0x60; /* Written in via_rhine_set_rx_mode(). */ |
| np->mii_if.full_duplex = 0; |
| np->last_duplex = 0; |
| |
| if (dev->if_port == 0) |
| dev->if_port = np->default_port; |
| |
| writel(np->rx_ring_dma, ioaddr + RxRingPtr); |
| writel(np->tx_ring_dma, ioaddr + TxRingPtr); |
| |
| via_rhine_set_rx_mode(dev); |
| |
| /* Enable interrupts by setting the interrupt mask. */ |
| writew(IntrRxDone | IntrRxErr | IntrRxEmpty| IntrRxOverflow | |
| IntrRxDropped | IntrRxNoBuf | IntrTxAborted | |
| IntrTxDone | IntrTxError | IntrTxUnderrun | |
| IntrPCIErr | IntrStatsMax | IntrLinkChange, |
| ioaddr + IntrEnable); |
| |
| np->chip_cmd = CmdStart|CmdTxOn|CmdRxOn|CmdNoTxPoll; |
| if (np->mii_if.force_media) |
| np->chip_cmd |= CmdFDuplex; |
| writew(np->chip_cmd, ioaddr + ChipCmd); |
| |
| via_rhine_check_duplex(dev); |
| |
| /* The LED outputs of various MII xcvrs should be configured. */ |
| /* For NS or Mison phys, turn on bit 1 in register 0x17 */ |
| /* For ESI phys, turn on bit 7 in register 0x17. */ |
| mdio_write(dev, np->phys[0], 0x17, mdio_read(dev, np->phys[0], 0x17) | |
| (np->drv_flags & HasESIPhy) ? 0x0080 : 0x0001); |
| } |
| /* Read and write over the MII Management Data I/O (MDIO) interface. */ |
| |
| static int mdio_read(struct net_device *dev, int phy_id, int regnum) |
| { |
| long ioaddr = dev->base_addr; |
| int boguscnt = 1024; |
| |
| /* Wait for a previous command to complete. */ |
| while ((readb(ioaddr + MIICmd) & 0x60) && --boguscnt > 0) |
| ; |
| writeb(0x00, ioaddr + MIICmd); |
| writeb(phy_id, ioaddr + MIIPhyAddr); |
| writeb(regnum, ioaddr + MIIRegAddr); |
| writeb(0x40, ioaddr + MIICmd); /* Trigger read */ |
| boguscnt = 1024; |
| while ((readb(ioaddr + MIICmd) & 0x40) && --boguscnt > 0) |
| ; |
| return readw(ioaddr + MIIData); |
| } |
| |
| static void mdio_write(struct net_device *dev, int phy_id, int regnum, int value) |
| { |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| int boguscnt = 1024; |
| |
| if (phy_id == np->phys[0]) { |
| switch (regnum) { |
| case MII_BMCR: /* Is user forcing speed/duplex? */ |
| if (value & 0x9000) /* Autonegotiation. */ |
| np->mii_if.force_media = 0; |
| else |
| np->last_duplex = np->mii_if.full_duplex = (value & 0x0100) ? 1 : 0; |
| break; |
| case MII_ADVERTISE: |
| np->mii_if.advertising = value; |
| break; |
| } |
| } |
| |
| /* Wait for a previous command to complete. */ |
| while ((readb(ioaddr + MIICmd) & 0x60) && --boguscnt > 0) |
| ; |
| writeb(0x00, ioaddr + MIICmd); |
| writeb(phy_id, ioaddr + MIIPhyAddr); |
| writeb(regnum, ioaddr + MIIRegAddr); |
| writew(value, ioaddr + MIIData); |
| writeb(0x20, ioaddr + MIICmd); /* Trigger write. */ |
| } |
| |
| |
| static int via_rhine_open(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| int i; |
| |
| /* Reset the chip. */ |
| writew(CmdReset, ioaddr + ChipCmd); |
| |
| i = request_irq(np->pdev->irq, &via_rhine_interrupt, SA_SHIRQ, dev->name, dev); |
| if (i) |
| return i; |
| |
| if (debug > 1) |
| printk(KERN_DEBUG "%s: via_rhine_open() irq %d.\n", |
| dev->name, np->pdev->irq); |
| |
| i = alloc_ring(dev); |
| if (i) |
| return i; |
| alloc_rbufs(dev); |
| alloc_tbufs(dev); |
| wait_for_reset(dev, np->chip_id, dev->name); |
| init_registers(dev); |
| if (debug > 2) |
| printk(KERN_DEBUG "%s: Done via_rhine_open(), status %4.4x " |
| "MII status: %4.4x.\n", |
| dev->name, readw(ioaddr + ChipCmd), |
| mdio_read(dev, np->phys[0], MII_BMSR)); |
| |
| netif_start_queue(dev); |
| |
| /* Set the timer to check for link beat. */ |
| init_timer(&np->timer); |
| np->timer.expires = jiffies + 2 * HZ/100; |
| np->timer.data = (unsigned long)dev; |
| np->timer.function = &via_rhine_timer; /* timer handler */ |
| add_timer(&np->timer); |
| |
| return 0; |
| } |
| |
| static void via_rhine_check_duplex(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| |
| if (np->mii_if.force_media) |
| return; |
| |
| mii_check_media(&np->mii_if, debug, 0); |
| |
| if (np->last_duplex != np->mii_if.full_duplex) { |
| np->last_duplex = np->mii_if.full_duplex; |
| if (debug) |
| printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d link" |
| " partner capability of %4.4x.\n", dev->name, |
| np->mii_if.full_duplex ? "full" : "half", np->phys[0], |
| mdio_read(dev, np->phys[0], MII_LPA)); |
| if (np->mii_if.full_duplex) |
| np->chip_cmd |= CmdFDuplex; |
| else |
| np->chip_cmd &= ~CmdFDuplex; |
| writew(np->chip_cmd, ioaddr + ChipCmd); |
| } |
| } |
| |
| |
| static void via_rhine_timer(unsigned long data) |
| { |
| struct net_device *dev = (struct net_device *)data; |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| int next_tick = 2*HZ/10; |
| |
| if (debug > 3) { |
| printk(KERN_DEBUG "%s: VIA Rhine monitor tick, status %4.4x.\n", |
| dev->name, readw(ioaddr + IntrStatus)); |
| } |
| |
| spin_lock_irq (&np->lock); |
| |
| via_rhine_check_duplex(dev); |
| |
| spin_unlock_irq (&np->lock); |
| |
| np->timer.expires = jiffies + next_tick; |
| add_timer(&np->timer); |
| } |
| |
| |
| static void via_rhine_tx_timeout (struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| |
| printk (KERN_WARNING "%s: Transmit timed out, status %4.4x, PHY status " |
| "%4.4x, resetting...\n", |
| dev->name, readw (ioaddr + IntrStatus), |
| mdio_read (dev, np->phys[0], MII_BMSR)); |
| |
| dev->if_port = 0; |
| |
| /* protect against concurrent rx interrupts */ |
| disable_irq(np->pdev->irq); |
| |
| spin_lock(&np->lock); |
| |
| /* Reset the chip. */ |
| writew(CmdReset, ioaddr + ChipCmd); |
| |
| /* clear all descriptors */ |
| free_tbufs(dev); |
| free_rbufs(dev); |
| alloc_tbufs(dev); |
| alloc_rbufs(dev); |
| |
| /* Reinitialize the hardware. */ |
| wait_for_reset(dev, np->chip_id, dev->name); |
| init_registers(dev); |
| |
| spin_unlock(&np->lock); |
| enable_irq(np->pdev->irq); |
| |
| dev->trans_start = jiffies; |
| np->stats.tx_errors++; |
| netif_wake_queue(dev); |
| } |
| |
| static int via_rhine_start_tx(struct sk_buff *skb, struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| unsigned entry; |
| u32 intr_status; |
| |
| /* Caution: the write order is important here, set the field |
| with the "ownership" bits last. */ |
| |
| /* Calculate the next Tx descriptor entry. */ |
| entry = np->cur_tx % TX_RING_SIZE; |
| |
| if (skb->len < ETH_ZLEN) { |
| skb = skb_padto(skb, ETH_ZLEN); |
| if (skb == NULL) |
| return 0; |
| } |
| |
| np->tx_skbuff[entry] = skb; |
| |
| if ((np->drv_flags & ReqTxAlign) && |
| (((long)skb->data & 3) || skb_shinfo(skb)->nr_frags != 0 || skb->ip_summed == CHECKSUM_HW) |
| ) { |
| /* Must use alignment buffer. */ |
| if (skb->len > PKT_BUF_SZ) { |
| /* packet too long, drop it */ |
| dev_kfree_skb(skb); |
| np->tx_skbuff[entry] = NULL; |
| np->stats.tx_dropped++; |
| return 0; |
| } |
| /* Padding is not copied and so must be redone. */ |
| skb_copy_and_csum_dev(skb, np->tx_buf[entry]); |
| if (skb->len < ETH_ZLEN) |
| memset(np->tx_buf[entry] + skb->len, 0, |
| ETH_ZLEN - skb->len); |
| np->tx_skbuff_dma[entry] = 0; |
| np->tx_ring[entry].addr = cpu_to_le32(np->tx_bufs_dma + |
| (np->tx_buf[entry] - np->tx_bufs)); |
| } else { |
| np->tx_skbuff_dma[entry] = |
| pci_map_single(np->pdev, skb->data, skb->len, PCI_DMA_TODEVICE); |
| np->tx_ring[entry].addr = cpu_to_le32(np->tx_skbuff_dma[entry]); |
| } |
| |
| np->tx_ring[entry].desc_length = |
| cpu_to_le32(TXDESC | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN)); |
| |
| /* lock eth irq */ |
| spin_lock_irq (&np->lock); |
| wmb(); |
| np->tx_ring[entry].tx_status = cpu_to_le32(DescOwn); |
| wmb(); |
| |
| np->cur_tx++; |
| |
| /* Non-x86 Todo: explicitly flush cache lines here. */ |
| |
| /* |
| * Wake the potentially-idle transmit channel unless errors are |
| * pending (the ISR must sort them out first). |
| */ |
| intr_status = get_intr_status(dev); |
| if ((intr_status & IntrTxErrSummary) == 0) { |
| writew(CmdTxDemand | np->chip_cmd, dev->base_addr + ChipCmd); |
| } |
| IOSYNC; |
| |
| if (np->cur_tx == np->dirty_tx + TX_QUEUE_LEN) |
| netif_stop_queue(dev); |
| |
| dev->trans_start = jiffies; |
| |
| spin_unlock_irq (&np->lock); |
| |
| if (debug > 4) { |
| printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n", |
| dev->name, np->cur_tx-1, entry); |
| } |
| return 0; |
| } |
| |
| /* The interrupt handler does all of the Rx thread work and cleans up |
| after the Tx thread. */ |
| static irqreturn_t via_rhine_interrupt(int irq, void *dev_instance, struct pt_regs *rgs) |
| { |
| struct net_device *dev = dev_instance; |
| long ioaddr; |
| u32 intr_status; |
| int boguscnt = max_interrupt_work; |
| int handled = 0; |
| |
| ioaddr = dev->base_addr; |
| |
| while ((intr_status = get_intr_status(dev))) { |
| handled = 1; |
| |
| /* Acknowledge all of the current interrupt sources ASAP. */ |
| if (intr_status & IntrTxDescRace) |
| writeb(0x08, ioaddr + IntrStatus2); |
| writew(intr_status & 0xffff, ioaddr + IntrStatus); |
| IOSYNC; |
| |
| if (debug > 4) |
| printk(KERN_DEBUG "%s: Interrupt, status %8.8x.\n", |
| dev->name, intr_status); |
| |
| if (intr_status & (IntrRxDone | IntrRxErr | IntrRxDropped | |
| IntrRxWakeUp | IntrRxEmpty | IntrRxNoBuf)) |
| via_rhine_rx(dev); |
| |
| if (intr_status & (IntrTxErrSummary | IntrTxDone)) { |
| if (intr_status & IntrTxErrSummary) { |
| int cnt = 20; |
| /* Avoid scavenging before Tx engine turned off */ |
| while ((readw(ioaddr+ChipCmd) & CmdTxOn) && --cnt) |
| udelay(5); |
| if (debug > 2 && !cnt) |
| printk(KERN_WARNING "%s: via_rhine_interrupt() " |
| "Tx engine still on.\n", |
| dev->name); |
| } |
| via_rhine_tx(dev); |
| } |
| |
| /* Abnormal error summary/uncommon events handlers. */ |
| if (intr_status & (IntrPCIErr | IntrLinkChange | |
| IntrStatsMax | IntrTxError | IntrTxAborted | |
| IntrTxUnderrun | IntrTxDescRace)) |
| via_rhine_error(dev, intr_status); |
| |
| if (--boguscnt < 0) { |
| printk(KERN_WARNING "%s: Too much work at interrupt, " |
| "status=%#8.8x.\n", |
| dev->name, intr_status); |
| break; |
| } |
| } |
| |
| if (debug > 3) |
| printk(KERN_DEBUG "%s: exiting interrupt, status=%8.8x.\n", |
| dev->name, readw(ioaddr + IntrStatus)); |
| return IRQ_RETVAL(handled); |
| } |
| |
| /* This routine is logically part of the interrupt handler, but isolated |
| for clarity. */ |
| static void via_rhine_tx(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| int txstatus = 0, entry = np->dirty_tx % TX_RING_SIZE; |
| |
| spin_lock (&np->lock); |
| |
| /* find and cleanup dirty tx descriptors */ |
| while (np->dirty_tx != np->cur_tx) { |
| txstatus = le32_to_cpu(np->tx_ring[entry].tx_status); |
| if (debug > 6) |
| printk(KERN_DEBUG " Tx scavenge %d status %8.8x.\n", |
| entry, txstatus); |
| if (txstatus & DescOwn) |
| break; |
| if (txstatus & 0x8000) { |
| if (debug > 1) |
| printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n", |
| dev->name, txstatus); |
| np->stats.tx_errors++; |
| if (txstatus & 0x0400) np->stats.tx_carrier_errors++; |
| if (txstatus & 0x0200) np->stats.tx_window_errors++; |
| if (txstatus & 0x0100) np->stats.tx_aborted_errors++; |
| if (txstatus & 0x0080) np->stats.tx_heartbeat_errors++; |
| if (((np->chip_id == VT86C100A) && txstatus & 0x0002) || |
| (txstatus & 0x0800) || (txstatus & 0x1000)) { |
| np->stats.tx_fifo_errors++; |
| np->tx_ring[entry].tx_status = cpu_to_le32(DescOwn); |
| break; /* Keep the skb - we try again */ |
| } |
| /* Transmitter restarted in 'abnormal' handler. */ |
| } else { |
| if (np->chip_id == VT86C100A) |
| np->stats.collisions += (txstatus >> 3) & 0x0F; |
| else |
| np->stats.collisions += txstatus & 0x0F; |
| if (debug > 6) |
| printk(KERN_DEBUG "collisions: %1.1x:%1.1x\n", |
| (txstatus >> 3) & 0xF, |
| txstatus & 0xF); |
| np->stats.tx_bytes += np->tx_skbuff[entry]->len; |
| np->stats.tx_packets++; |
| } |
| /* Free the original skb. */ |
| if (np->tx_skbuff_dma[entry]) { |
| pci_unmap_single(np->pdev, |
| np->tx_skbuff_dma[entry], |
| np->tx_skbuff[entry]->len, PCI_DMA_TODEVICE); |
| } |
| dev_kfree_skb_irq(np->tx_skbuff[entry]); |
| np->tx_skbuff[entry] = NULL; |
| entry = (++np->dirty_tx) % TX_RING_SIZE; |
| } |
| if ((np->cur_tx - np->dirty_tx) < TX_QUEUE_LEN - 4) |
| netif_wake_queue (dev); |
| |
| spin_unlock (&np->lock); |
| } |
| |
| /* This routine is logically part of the interrupt handler, but isolated |
| for clarity and better register allocation. */ |
| static void via_rhine_rx(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| int entry = np->cur_rx % RX_RING_SIZE; |
| int boguscnt = np->dirty_rx + RX_RING_SIZE - np->cur_rx; |
| |
| if (debug > 4) { |
| printk(KERN_DEBUG "%s: via_rhine_rx(), entry %d status %8.8x.\n", |
| dev->name, entry, le32_to_cpu(np->rx_head_desc->rx_status)); |
| } |
| |
| /* If EOP is set on the next entry, it's a new packet. Send it up. */ |
| while ( ! (np->rx_head_desc->rx_status & cpu_to_le32(DescOwn))) { |
| struct rx_desc *desc = np->rx_head_desc; |
| u32 desc_status = le32_to_cpu(desc->rx_status); |
| int data_size = desc_status >> 16; |
| |
| if (debug > 4) |
| printk(KERN_DEBUG " via_rhine_rx() status is %8.8x.\n", |
| desc_status); |
| if (--boguscnt < 0) |
| break; |
| if ( (desc_status & (RxWholePkt | RxErr)) != RxWholePkt) { |
| if ((desc_status & RxWholePkt) != RxWholePkt) { |
| printk(KERN_WARNING "%s: Oversized Ethernet frame spanned " |
| "multiple buffers, entry %#x length %d status %8.8x!\n", |
| dev->name, entry, data_size, desc_status); |
| printk(KERN_WARNING "%s: Oversized Ethernet frame %p vs %p.\n", |
| dev->name, np->rx_head_desc, &np->rx_ring[entry]); |
| np->stats.rx_length_errors++; |
| } else if (desc_status & RxErr) { |
| /* There was a error. */ |
| if (debug > 2) |
| printk(KERN_DEBUG " via_rhine_rx() Rx error was %8.8x.\n", |
| desc_status); |
| np->stats.rx_errors++; |
| if (desc_status & 0x0030) np->stats.rx_length_errors++; |
| if (desc_status & 0x0048) np->stats.rx_fifo_errors++; |
| if (desc_status & 0x0004) np->stats.rx_frame_errors++; |
| if (desc_status & 0x0002) { |
| /* this can also be updated outside the interrupt handler */ |
| spin_lock (&np->lock); |
| np->stats.rx_crc_errors++; |
| spin_unlock (&np->lock); |
| } |
| } |
| } else { |
| struct sk_buff *skb; |
| /* Length should omit the CRC */ |
| int pkt_len = data_size - 4; |
| |
| /* Check if the packet is long enough to accept without copying |
| to a minimally-sized skbuff. */ |
| if (pkt_len < rx_copybreak && |
| (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { |
| skb->dev = dev; |
| skb_reserve(skb, 2); /* 16 byte align the IP header */ |
| pci_dma_sync_single(np->pdev, np->rx_skbuff_dma[entry], |
| np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| |
| /* *_IP_COPYSUM isn't defined anywhere and eth_copy_and_sum |
| is memcpy for all archs so this is kind of pointless right |
| now ... or? */ |
| #if HAS_IP_COPYSUM /* Call copy + cksum if available. */ |
| eth_copy_and_sum(skb, np->rx_skbuff[entry]->tail, pkt_len, 0); |
| skb_put(skb, pkt_len); |
| #else |
| memcpy(skb_put(skb, pkt_len), np->rx_skbuff[entry]->tail, |
| pkt_len); |
| #endif |
| } else { |
| skb = np->rx_skbuff[entry]; |
| if (skb == NULL) { |
| printk(KERN_ERR "%s: Inconsistent Rx descriptor chain.\n", |
| dev->name); |
| break; |
| } |
| np->rx_skbuff[entry] = NULL; |
| skb_put(skb, pkt_len); |
| pci_unmap_single(np->pdev, np->rx_skbuff_dma[entry], |
| np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
| } |
| skb->protocol = eth_type_trans(skb, dev); |
| netif_rx(skb); |
| dev->last_rx = jiffies; |
| np->stats.rx_bytes += pkt_len; |
| np->stats.rx_packets++; |
| } |
| entry = (++np->cur_rx) % RX_RING_SIZE; |
| np->rx_head_desc = &np->rx_ring[entry]; |
| } |
| |
| /* Refill the Rx ring buffers. */ |
| for (; np->cur_rx - np->dirty_rx > 0; np->dirty_rx++) { |
| struct sk_buff *skb; |
| entry = np->dirty_rx % RX_RING_SIZE; |
| if (np->rx_skbuff[entry] == NULL) { |
| skb = dev_alloc_skb(np->rx_buf_sz); |
| np->rx_skbuff[entry] = skb; |
| if (skb == NULL) |
| break; /* Better luck next round. */ |
| skb->dev = dev; /* Mark as being used by this device. */ |
| np->rx_skbuff_dma[entry] = |
| pci_map_single(np->pdev, skb->tail, np->rx_buf_sz, |
| PCI_DMA_FROMDEVICE); |
| np->rx_ring[entry].addr = cpu_to_le32(np->rx_skbuff_dma[entry]); |
| } |
| np->rx_ring[entry].rx_status = cpu_to_le32(DescOwn); |
| } |
| |
| /* Pre-emptively restart Rx engine. */ |
| writew(readw(dev->base_addr + ChipCmd) | CmdRxOn | CmdRxDemand, |
| dev->base_addr + ChipCmd); |
| } |
| |
| /* Clears the "tally counters" for CRC errors and missed frames(?). |
| It has been reported that some chips need a write of 0 to clear |
| these, for others the counters are set to 1 when written to and |
| instead cleared when read. So we clear them both ways ... */ |
| static inline void clear_tally_counters(const long ioaddr) |
| { |
| writel(0, ioaddr + RxMissed); |
| readw(ioaddr + RxCRCErrs); |
| readw(ioaddr + RxMissed); |
| } |
| |
| static void via_rhine_restart_tx(struct net_device *dev) { |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| int entry = np->dirty_tx % TX_RING_SIZE; |
| u32 intr_status; |
| |
| /* |
| * If new errors occured, we need to sort them out before doing Tx. |
| * In that case the ISR will be back here RSN anyway. |
| */ |
| intr_status = get_intr_status(dev); |
| |
| if ((intr_status & IntrTxErrSummary) == 0) { |
| |
| /* We know better than the chip where it should continue. */ |
| writel(np->tx_ring_dma + entry * sizeof(struct tx_desc), |
| ioaddr + TxRingPtr); |
| |
| writew(CmdTxDemand | np->chip_cmd, ioaddr + ChipCmd); |
| IOSYNC; |
| } |
| else { |
| /* This should never happen */ |
| if (debug > 1) |
| printk(KERN_WARNING "%s: via_rhine_restart_tx() " |
| "Another error occured %8.8x.\n", |
| dev->name, intr_status); |
| } |
| |
| } |
| |
| static void via_rhine_error(struct net_device *dev, int intr_status) |
| { |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| |
| spin_lock (&np->lock); |
| |
| if (intr_status & (IntrLinkChange)) { |
| if (readb(ioaddr + MIIStatus) & 0x02) { |
| /* Link failed, restart autonegotiation. */ |
| if (np->drv_flags & HasDavicomPhy) |
| mdio_write(dev, np->phys[0], MII_BMCR, 0x3300); |
| } else |
| via_rhine_check_duplex(dev); |
| if (debug) |
| printk(KERN_ERR "%s: MII status changed: Autonegotiation " |
| "advertising %4.4x partner %4.4x.\n", dev->name, |
| mdio_read(dev, np->phys[0], MII_ADVERTISE), |
| mdio_read(dev, np->phys[0], MII_LPA)); |
| } |
| if (intr_status & IntrStatsMax) { |
| np->stats.rx_crc_errors += readw(ioaddr + RxCRCErrs); |
| np->stats.rx_missed_errors += readw(ioaddr + RxMissed); |
| clear_tally_counters(ioaddr); |
| } |
| if (intr_status & IntrTxAborted) { |
| if (debug > 1) |
| printk(KERN_INFO "%s: Abort %8.8x, frame dropped.\n", |
| dev->name, intr_status); |
| } |
| if (intr_status & IntrTxUnderrun) { |
| if (np->tx_thresh < 0xE0) |
| writeb(np->tx_thresh += 0x20, ioaddr + TxConfig); |
| if (debug > 1) |
| printk(KERN_INFO "%s: Transmitter underrun, Tx " |
| "threshold now %2.2x.\n", |
| dev->name, np->tx_thresh); |
| } |
| if (intr_status & IntrTxDescRace) { |
| if (debug > 2) |
| printk(KERN_INFO "%s: Tx descriptor write-back race.\n", |
| dev->name); |
| } |
| if ((intr_status & IntrTxError) && ~( IntrTxAborted | IntrTxUnderrun | |
| IntrTxDescRace )) { |
| if (np->tx_thresh < 0xE0) { |
| writeb(np->tx_thresh += 0x20, ioaddr + TxConfig); |
| } |
| if (debug > 1) |
| printk(KERN_INFO "%s: Unspecified error. Tx " |
| "threshold now %2.2x.\n", |
| dev->name, np->tx_thresh); |
| } |
| if (intr_status & ( IntrTxAborted | IntrTxUnderrun | IntrTxDescRace | |
| IntrTxError )) |
| via_rhine_restart_tx(dev); |
| |
| if (intr_status & ~( IntrLinkChange | IntrStatsMax | IntrTxUnderrun | |
| IntrTxError | IntrTxAborted | IntrNormalSummary | |
| IntrTxDescRace )) { |
| if (debug > 1) |
| printk(KERN_ERR "%s: Something Wicked happened! %8.8x.\n", |
| dev->name, intr_status); |
| } |
| |
| spin_unlock (&np->lock); |
| } |
| |
| static struct net_device_stats *via_rhine_get_stats(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&np->lock, flags); |
| np->stats.rx_crc_errors += readw(ioaddr + RxCRCErrs); |
| np->stats.rx_missed_errors += readw(ioaddr + RxMissed); |
| clear_tally_counters(ioaddr); |
| spin_unlock_irqrestore(&np->lock, flags); |
| |
| return &np->stats; |
| } |
| |
| static void via_rhine_set_rx_mode(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| long ioaddr = dev->base_addr; |
| u32 mc_filter[2]; /* Multicast hash filter */ |
| u8 rx_mode; /* Note: 0x02=accept runt, 0x01=accept errs */ |
| |
| if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ |
| /* Unconditionally log net taps. */ |
| printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); |
| rx_mode = 0x1C; |
| writel(0xffffffff, ioaddr + MulticastFilter0); |
| writel(0xffffffff, ioaddr + MulticastFilter1); |
| } else if ((dev->mc_count > multicast_filter_limit) |
| || (dev->flags & IFF_ALLMULTI)) { |
| /* Too many to match, or accept all multicasts. */ |
| writel(0xffffffff, ioaddr + MulticastFilter0); |
| writel(0xffffffff, ioaddr + MulticastFilter1); |
| rx_mode = 0x0C; |
| } else { |
| struct dev_mc_list *mclist; |
| int i; |
| memset(mc_filter, 0, sizeof(mc_filter)); |
| for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; |
| i++, mclist = mclist->next) { |
| int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26; |
| |
| mc_filter[bit_nr >> 5] |= cpu_to_le32(1 << (bit_nr & 31)); |
| } |
| writel(mc_filter[0], ioaddr + MulticastFilter0); |
| writel(mc_filter[1], ioaddr + MulticastFilter1); |
| rx_mode = 0x0C; |
| } |
| writeb(np->rx_thresh | rx_mode, ioaddr + RxConfig); |
| } |
| |
| static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) |
| { |
| struct netdev_private *np = dev->priv; |
| |
| strcpy (info->driver, DRV_NAME); |
| strcpy (info->version, DRV_VERSION); |
| strcpy (info->bus_info, pci_name(np->pdev)); |
| } |
| |
| static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| { |
| struct netdev_private *np = dev->priv; |
| int rc; |
| |
| if (!(np->drv_flags & CanHaveMII)) |
| return -EINVAL; |
| |
| spin_lock_irq(&np->lock); |
| rc = mii_ethtool_gset(&np->mii_if, cmd); |
| spin_unlock_irq(&np->lock); |
| |
| return rc; |
| } |
| |
| static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| { |
| struct netdev_private *np = dev->priv; |
| int rc; |
| |
| if (!(np->drv_flags & CanHaveMII)) |
| return -EINVAL; |
| |
| spin_lock_irq(&np->lock); |
| rc = mii_ethtool_sset(&np->mii_if, cmd); |
| spin_unlock_irq(&np->lock); |
| |
| return rc; |
| } |
| |
| static int netdev_nway_reset(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| |
| if (!(np->drv_flags & CanHaveMII)) |
| return -EINVAL; |
| |
| return mii_nway_restart(&np->mii_if); |
| } |
| |
| static u32 netdev_get_link(struct net_device *dev) |
| { |
| struct netdev_private *np = dev->priv; |
| |
| if (!(np->drv_flags & CanHaveMII)) |
| return 0; /* -EINVAL */ |
| |
| return mii_link_ok(&np->mii_if); |
| } |
| |
| static u32 netdev_get_msglevel(struct net_device *dev) |
| { |
| return debug; |
| } |
| |
| static void netdev_set_msglevel(struct net_device *dev, u32 value) |
| { |
| debug = value; |
| } |
| |
| static struct ethtool_ops netdev_ethtool_ops = { |
| .get_drvinfo = netdev_get_drvinfo, |
| .get_settings = netdev_get_settings, |
| .set_settings = netdev_set_settings, |
| .nway_reset = netdev_nway_reset, |
| .get_link = netdev_get_link, |
| .get_msglevel = netdev_get_msglevel, |
| .set_msglevel = netdev_set_msglevel, |
| .get_sg = ethtool_op_get_sg, |
| .get_tx_csum = ethtool_op_get_tx_csum, |
| }; |
| |
| static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| { |
| struct netdev_private *np = dev->priv; |
| struct mii_ioctl_data *data = (struct mii_ioctl_data *) & rq->ifr_data; |
| int rc; |
| |
| if (!netif_running(dev)) |
| return -EINVAL; |
| |
| spin_lock_irq(&np->lock); |
| rc = generic_mii_ioctl(&np->mii_if, data, cmd, NULL); |
| spin_unlock_irq(&np->lock); |
| |
| return rc; |
| } |
| |
| static int via_rhine_close(struct net_device *dev) |
| { |
| long ioaddr = dev->base_addr; |
| struct netdev_private *np = dev->priv; |
| |
| del_timer_sync(&np->timer); |
| |
| spin_lock_irq(&np->lock); |
| |
| netif_stop_queue(dev); |
| |
| if (debug > 1) |
| printk(KERN_DEBUG "%s: Shutting down ethercard, status was %4.4x.\n", |
| dev->name, readw(ioaddr + ChipCmd)); |
| |
| /* Switch to loopback mode to avoid hardware races. */ |
| writeb(np->tx_thresh | 0x02, ioaddr + TxConfig); |
| |
| /* Disable interrupts by clearing the interrupt mask. */ |
| writew(0x0000, ioaddr + IntrEnable); |
| |
| /* Stop the chip's Tx and Rx processes. */ |
| writew(CmdStop, ioaddr + ChipCmd); |
| |
| spin_unlock_irq(&np->lock); |
| |
| free_irq(np->pdev->irq, dev); |
| free_rbufs(dev); |
| free_tbufs(dev); |
| free_ring(dev); |
| |
| return 0; |
| } |
| |
| |
| static void __devexit via_rhine_remove_one (struct pci_dev *pdev) |
| { |
| struct net_device *dev = pci_get_drvdata(pdev); |
| |
| unregister_netdev(dev); |
| |
| pci_release_regions(pdev); |
| |
| #ifdef USE_MEM |
| iounmap((char *)(dev->base_addr)); |
| #endif |
| |
| free_netdev(dev); |
| pci_disable_device(pdev); |
| pci_set_drvdata(pdev, NULL); |
| } |
| |
| |
| static struct pci_driver via_rhine_driver = { |
| .name = "via-rhine", |
| .id_table = via_rhine_pci_tbl, |
| .probe = via_rhine_init_one, |
| .remove = __devexit_p(via_rhine_remove_one), |
| }; |
| |
| |
| static int __init via_rhine_init (void) |
| { |
| /* when a module, this is printed whether or not devices are found in probe */ |
| #ifdef MODULE |
| printk(version); |
| #endif |
| return pci_module_init (&via_rhine_driver); |
| } |
| |
| |
| static void __exit via_rhine_cleanup (void) |
| { |
| pci_unregister_driver (&via_rhine_driver); |
| } |
| |
| |
| module_init(via_rhine_init); |
| module_exit(via_rhine_cleanup); |
| |
| |
| /* |
| * Local variables: |
| * compile-command: "gcc -DMODULE -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -c via-rhine.c `[ -f /usr/include/linux/modversions.h ] && echo -DMODVERSIONS`" |
| * c-indent-level: 4 |
| * c-basic-offset: 4 |
| * tab-width: 4 |
| * End: |
| */ |