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c31f28e778
- Eliminate check for irq handler 'dev_id==NULL' where the condition never occurs. - Eliminate needless casts to/from void* Signed-off-by: Jeff Garzik <jeff@garzik.org>
1451 lines
46 KiB
C
1451 lines
46 KiB
C
/* yellowfin.c: A Packet Engines G-NIC ethernet driver for linux. */
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/*
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Written 1997-2001 by Donald Becker.
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This software may be used and distributed according to the terms of
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the GNU General Public License (GPL), incorporated herein by reference.
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Drivers based on or derived from this code fall under the GPL and must
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retain the authorship, copyright and license notice. This file is not
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a complete program and may only be used when the entire operating
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system is licensed under the GPL.
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This driver is for the Packet Engines G-NIC PCI Gigabit Ethernet adapter.
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It also supports the Symbios Logic version of the same chip core.
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The author may be reached as becker@scyld.com, or C/O
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Scyld Computing Corporation
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410 Severn Ave., Suite 210
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Annapolis MD 21403
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Support and updates available at
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http://www.scyld.com/network/yellowfin.html
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[link no longer provides useful info -jgarzik]
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*/
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#define DRV_NAME "yellowfin"
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#define DRV_VERSION "2.1"
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#define DRV_RELDATE "Sep 11, 2006"
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#define PFX DRV_NAME ": "
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/* The user-configurable values.
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These may be modified when a driver module is loaded.*/
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static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
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/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
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static int max_interrupt_work = 20;
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static int mtu;
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#ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */
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/* System-wide count of bogus-rx frames. */
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static int bogus_rx;
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static int dma_ctrl = 0x004A0263; /* Constrained by errata */
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static int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */
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#elif defined(YF_NEW) /* A future perfect board :->. */
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static int dma_ctrl = 0x00CAC277; /* Override when loading module! */
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static int fifo_cfg = 0x0028;
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#else
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static const int dma_ctrl = 0x004A0263; /* Constrained by errata */
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static const int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */
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#endif
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/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
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Setting to > 1514 effectively disables this feature. */
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static int rx_copybreak;
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/* Used to pass the media type, etc.
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No media types are currently defined. These exist for driver
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interoperability.
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*/
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#define MAX_UNITS 8 /* More are supported, limit only on options */
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static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
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static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
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/* Do ugly workaround for GX server chipset errata. */
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static int gx_fix;
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/* Operational parameters that are set at compile time. */
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/* Keep the ring sizes a power of two for efficiency.
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Making the Tx ring too long decreases the effectiveness of channel
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bonding and packet priority.
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There are no ill effects from too-large receive rings. */
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#define TX_RING_SIZE 16
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#define TX_QUEUE_SIZE 12 /* Must be > 4 && <= TX_RING_SIZE */
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#define RX_RING_SIZE 64
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#define STATUS_TOTAL_SIZE TX_RING_SIZE*sizeof(struct tx_status_words)
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#define TX_TOTAL_SIZE 2*TX_RING_SIZE*sizeof(struct yellowfin_desc)
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#define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct yellowfin_desc)
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/* Operational parameters that usually are not changed. */
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/* Time in jiffies before concluding the transmitter is hung. */
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#define TX_TIMEOUT (2*HZ)
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#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
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#define yellowfin_debug debug
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/mii.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/ethtool.h>
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#include <linux/crc32.h>
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#include <linux/bitops.h>
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#include <asm/uaccess.h>
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#include <asm/processor.h> /* Processor type for cache alignment. */
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#include <asm/unaligned.h>
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#include <asm/io.h>
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/* These identify the driver base version and may not be removed. */
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static char version[] __devinitdata =
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KERN_INFO DRV_NAME ".c:v1.05 1/09/2001 Written by Donald Becker <becker@scyld.com>\n"
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KERN_INFO " http://www.scyld.com/network/yellowfin.html\n"
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KERN_INFO " (unofficial 2.4.x port, " DRV_VERSION ", " DRV_RELDATE ")\n";
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MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
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MODULE_DESCRIPTION("Packet Engines Yellowfin G-NIC Gigabit Ethernet driver");
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MODULE_LICENSE("GPL");
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module_param(max_interrupt_work, int, 0);
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module_param(mtu, int, 0);
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module_param(debug, int, 0);
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module_param(rx_copybreak, int, 0);
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module_param_array(options, int, NULL, 0);
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module_param_array(full_duplex, int, NULL, 0);
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module_param(gx_fix, int, 0);
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MODULE_PARM_DESC(max_interrupt_work, "G-NIC maximum events handled per interrupt");
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MODULE_PARM_DESC(mtu, "G-NIC MTU (all boards)");
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MODULE_PARM_DESC(debug, "G-NIC debug level (0-7)");
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MODULE_PARM_DESC(rx_copybreak, "G-NIC copy breakpoint for copy-only-tiny-frames");
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MODULE_PARM_DESC(options, "G-NIC: Bits 0-3: media type, bit 17: full duplex");
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MODULE_PARM_DESC(full_duplex, "G-NIC full duplex setting(s) (1)");
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MODULE_PARM_DESC(gx_fix, "G-NIC: enable GX server chipset bug workaround (0-1)");
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/*
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Theory of Operation
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I. Board Compatibility
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This device driver is designed for the Packet Engines "Yellowfin" Gigabit
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Ethernet adapter. The G-NIC 64-bit PCI card is supported, as well as the
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Symbios 53C885E dual function chip.
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II. Board-specific settings
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PCI bus devices are configured by the system at boot time, so no jumpers
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need to be set on the board. The system BIOS preferably should assign the
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PCI INTA signal to an otherwise unused system IRQ line.
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Note: Kernel versions earlier than 1.3.73 do not support shared PCI
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interrupt lines.
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III. Driver operation
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IIIa. Ring buffers
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The Yellowfin uses the Descriptor Based DMA Architecture specified by Apple.
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This is a descriptor list scheme similar to that used by the EEPro100 and
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Tulip. This driver uses two statically allocated fixed-size descriptor lists
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formed into rings by a branch from the final descriptor to the beginning of
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the list. The ring sizes are set at compile time by RX/TX_RING_SIZE.
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The driver allocates full frame size skbuffs for the Rx ring buffers at
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open() time and passes the skb->data field to the Yellowfin as receive data
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buffers. When an incoming frame is less than RX_COPYBREAK bytes long,
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a fresh skbuff is allocated and the frame is copied to the new skbuff.
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When the incoming frame is larger, the skbuff is passed directly up the
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protocol stack and replaced by a newly allocated skbuff.
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The RX_COPYBREAK value is chosen to trade-off the memory wasted by
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using a full-sized skbuff for small frames vs. the copying costs of larger
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frames. For small frames the copying cost is negligible (esp. considering
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that we are pre-loading the cache with immediately useful header
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information). For large frames the copying cost is non-trivial, and the
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larger copy might flush the cache of useful data.
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IIIC. Synchronization
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The driver runs as two independent, single-threaded flows of control. One
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is the send-packet routine, which enforces single-threaded use by the
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dev->tbusy flag. The other thread is the interrupt handler, which is single
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threaded by the hardware and other software.
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The send packet thread has partial control over the Tx ring and 'dev->tbusy'
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flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next
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queue slot is empty, it clears the tbusy flag when finished otherwise it sets
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the 'yp->tx_full' flag.
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The interrupt handler has exclusive control over the Rx ring and records stats
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from the Tx ring. After reaping the stats, it marks the Tx queue entry as
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empty by incrementing the dirty_tx mark. Iff the 'yp->tx_full' flag is set, it
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clears both the tx_full and tbusy flags.
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IV. Notes
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Thanks to Kim Stearns of Packet Engines for providing a pair of G-NIC boards.
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Thanks to Bruce Faust of Digitalscape for providing both their SYM53C885 board
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and an AlphaStation to verifty the Alpha port!
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IVb. References
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Yellowfin Engineering Design Specification, 4/23/97 Preliminary/Confidential
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Symbios SYM53C885 PCI-SCSI/Fast Ethernet Multifunction Controller Preliminary
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Data Manual v3.0
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http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html
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http://cesdis.gsfc.nasa.gov/linux/misc/100mbps.html
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IVc. Errata
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See Packet Engines confidential appendix (prototype chips only).
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*/
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enum capability_flags {
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HasMII=1, FullTxStatus=2, IsGigabit=4, HasMulticastBug=8, FullRxStatus=16,
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HasMACAddrBug=32, /* Only on early revs. */
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DontUseEeprom=64, /* Don't read the MAC from the EEPROm. */
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};
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/* The PCI I/O space extent. */
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enum {
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YELLOWFIN_SIZE = 0x100,
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};
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struct pci_id_info {
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const char *name;
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struct match_info {
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int pci, pci_mask, subsystem, subsystem_mask;
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int revision, revision_mask; /* Only 8 bits. */
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} id;
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int drv_flags; /* Driver use, intended as capability flags. */
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};
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static const struct pci_id_info pci_id_tbl[] = {
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{"Yellowfin G-NIC Gigabit Ethernet", { 0x07021000, 0xffffffff},
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FullTxStatus | IsGigabit | HasMulticastBug | HasMACAddrBug | DontUseEeprom},
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{"Symbios SYM83C885", { 0x07011000, 0xffffffff},
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HasMII | DontUseEeprom },
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{ }
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};
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static const struct pci_device_id yellowfin_pci_tbl[] = {
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{ 0x1000, 0x0702, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ 0x1000, 0x0701, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
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{ }
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};
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MODULE_DEVICE_TABLE (pci, yellowfin_pci_tbl);
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/* Offsets to the Yellowfin registers. Various sizes and alignments. */
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enum yellowfin_offsets {
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TxCtrl=0x00, TxStatus=0x04, TxPtr=0x0C,
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TxIntrSel=0x10, TxBranchSel=0x14, TxWaitSel=0x18,
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RxCtrl=0x40, RxStatus=0x44, RxPtr=0x4C,
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RxIntrSel=0x50, RxBranchSel=0x54, RxWaitSel=0x58,
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EventStatus=0x80, IntrEnb=0x82, IntrClear=0x84, IntrStatus=0x86,
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ChipRev=0x8C, DMACtrl=0x90, TxThreshold=0x94,
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Cnfg=0xA0, FrameGap0=0xA2, FrameGap1=0xA4,
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MII_Cmd=0xA6, MII_Addr=0xA8, MII_Wr_Data=0xAA, MII_Rd_Data=0xAC,
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MII_Status=0xAE,
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RxDepth=0xB8, FlowCtrl=0xBC,
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AddrMode=0xD0, StnAddr=0xD2, HashTbl=0xD8, FIFOcfg=0xF8,
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EEStatus=0xF0, EECtrl=0xF1, EEAddr=0xF2, EERead=0xF3, EEWrite=0xF4,
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EEFeature=0xF5,
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};
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/* The Yellowfin Rx and Tx buffer descriptors.
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Elements are written as 32 bit for endian portability. */
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struct yellowfin_desc {
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u32 dbdma_cmd;
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u32 addr;
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u32 branch_addr;
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u32 result_status;
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};
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struct tx_status_words {
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#ifdef __BIG_ENDIAN
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u16 tx_errs;
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u16 tx_cnt;
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u16 paused;
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u16 total_tx_cnt;
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#else /* Little endian chips. */
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u16 tx_cnt;
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u16 tx_errs;
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u16 total_tx_cnt;
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u16 paused;
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#endif /* __BIG_ENDIAN */
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};
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/* Bits in yellowfin_desc.cmd */
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enum desc_cmd_bits {
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CMD_TX_PKT=0x10000000, CMD_RX_BUF=0x20000000, CMD_TXSTATUS=0x30000000,
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CMD_NOP=0x60000000, CMD_STOP=0x70000000,
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BRANCH_ALWAYS=0x0C0000, INTR_ALWAYS=0x300000, WAIT_ALWAYS=0x030000,
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BRANCH_IFTRUE=0x040000,
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};
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/* Bits in yellowfin_desc.status */
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enum desc_status_bits { RX_EOP=0x0040, };
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/* Bits in the interrupt status/mask registers. */
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enum intr_status_bits {
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IntrRxDone=0x01, IntrRxInvalid=0x02, IntrRxPCIFault=0x04,IntrRxPCIErr=0x08,
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IntrTxDone=0x10, IntrTxInvalid=0x20, IntrTxPCIFault=0x40,IntrTxPCIErr=0x80,
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IntrEarlyRx=0x100, IntrWakeup=0x200, };
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#define PRIV_ALIGN 31 /* Required alignment mask */
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#define MII_CNT 4
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struct yellowfin_private {
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/* Descriptor rings first for alignment.
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Tx requires a second descriptor for status. */
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struct yellowfin_desc *rx_ring;
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struct yellowfin_desc *tx_ring;
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struct sk_buff* rx_skbuff[RX_RING_SIZE];
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struct sk_buff* tx_skbuff[TX_RING_SIZE];
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dma_addr_t rx_ring_dma;
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dma_addr_t tx_ring_dma;
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struct tx_status_words *tx_status;
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dma_addr_t tx_status_dma;
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struct timer_list timer; /* Media selection timer. */
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struct net_device_stats stats;
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/* Frequently used and paired value: keep adjacent for cache effect. */
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int chip_id, drv_flags;
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struct pci_dev *pci_dev;
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unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */
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unsigned int rx_buf_sz; /* Based on MTU+slack. */
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struct tx_status_words *tx_tail_desc;
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unsigned int cur_tx, dirty_tx;
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int tx_threshold;
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unsigned int tx_full:1; /* The Tx queue is full. */
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unsigned int full_duplex:1; /* Full-duplex operation requested. */
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unsigned int duplex_lock:1;
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unsigned int medialock:1; /* Do not sense media. */
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unsigned int default_port:4; /* Last dev->if_port value. */
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/* MII transceiver section. */
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int mii_cnt; /* MII device addresses. */
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u16 advertising; /* NWay media advertisement */
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unsigned char phys[MII_CNT]; /* MII device addresses, only first one used */
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spinlock_t lock;
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void __iomem *base;
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};
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static int read_eeprom(void __iomem *ioaddr, int location);
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static int mdio_read(void __iomem *ioaddr, int phy_id, int location);
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static void mdio_write(void __iomem *ioaddr, int phy_id, int location, int value);
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static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
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static int yellowfin_open(struct net_device *dev);
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static void yellowfin_timer(unsigned long data);
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static void yellowfin_tx_timeout(struct net_device *dev);
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static void yellowfin_init_ring(struct net_device *dev);
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static int yellowfin_start_xmit(struct sk_buff *skb, struct net_device *dev);
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static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance);
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static int yellowfin_rx(struct net_device *dev);
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static void yellowfin_error(struct net_device *dev, int intr_status);
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static int yellowfin_close(struct net_device *dev);
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static struct net_device_stats *yellowfin_get_stats(struct net_device *dev);
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static void set_rx_mode(struct net_device *dev);
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static const struct ethtool_ops ethtool_ops;
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static int __devinit yellowfin_init_one(struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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struct net_device *dev;
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struct yellowfin_private *np;
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int irq;
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int chip_idx = ent->driver_data;
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static int find_cnt;
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void __iomem *ioaddr;
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int i, option = find_cnt < MAX_UNITS ? options[find_cnt] : 0;
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int drv_flags = pci_id_tbl[chip_idx].drv_flags;
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void *ring_space;
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dma_addr_t ring_dma;
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#ifdef USE_IO_OPS
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int bar = 0;
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#else
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int bar = 1;
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#endif
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/* when built into the kernel, we only print version if device is found */
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#ifndef MODULE
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static int printed_version;
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if (!printed_version++)
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printk(version);
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#endif
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i = pci_enable_device(pdev);
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if (i) return i;
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dev = alloc_etherdev(sizeof(*np));
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if (!dev) {
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printk (KERN_ERR PFX "cannot allocate ethernet device\n");
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return -ENOMEM;
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}
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SET_MODULE_OWNER(dev);
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SET_NETDEV_DEV(dev, &pdev->dev);
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np = netdev_priv(dev);
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if (pci_request_regions(pdev, DRV_NAME))
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goto err_out_free_netdev;
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pci_set_master (pdev);
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ioaddr = pci_iomap(pdev, bar, YELLOWFIN_SIZE);
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if (!ioaddr)
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goto err_out_free_res;
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irq = pdev->irq;
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if (drv_flags & DontUseEeprom)
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for (i = 0; i < 6; i++)
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dev->dev_addr[i] = ioread8(ioaddr + StnAddr + i);
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else {
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int ee_offset = (read_eeprom(ioaddr, 6) == 0xff ? 0x100 : 0);
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for (i = 0; i < 6; i++)
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dev->dev_addr[i] = read_eeprom(ioaddr, ee_offset + i);
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}
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/* Reset the chip. */
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iowrite32(0x80000000, ioaddr + DMACtrl);
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dev->base_addr = (unsigned long)ioaddr;
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dev->irq = irq;
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pci_set_drvdata(pdev, dev);
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spin_lock_init(&np->lock);
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np->pci_dev = pdev;
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np->chip_id = chip_idx;
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np->drv_flags = drv_flags;
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np->base = ioaddr;
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ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
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if (!ring_space)
|
|
goto err_out_cleardev;
|
|
np->tx_ring = (struct yellowfin_desc *)ring_space;
|
|
np->tx_ring_dma = ring_dma;
|
|
|
|
ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
|
|
if (!ring_space)
|
|
goto err_out_unmap_tx;
|
|
np->rx_ring = (struct yellowfin_desc *)ring_space;
|
|
np->rx_ring_dma = ring_dma;
|
|
|
|
ring_space = pci_alloc_consistent(pdev, STATUS_TOTAL_SIZE, &ring_dma);
|
|
if (!ring_space)
|
|
goto err_out_unmap_rx;
|
|
np->tx_status = (struct tx_status_words *)ring_space;
|
|
np->tx_status_dma = ring_dma;
|
|
|
|
if (dev->mem_start)
|
|
option = dev->mem_start;
|
|
|
|
/* The lower four bits are the media type. */
|
|
if (option > 0) {
|
|
if (option & 0x200)
|
|
np->full_duplex = 1;
|
|
np->default_port = option & 15;
|
|
if (np->default_port)
|
|
np->medialock = 1;
|
|
}
|
|
if (find_cnt < MAX_UNITS && full_duplex[find_cnt] > 0)
|
|
np->full_duplex = 1;
|
|
|
|
if (np->full_duplex)
|
|
np->duplex_lock = 1;
|
|
|
|
/* The Yellowfin-specific entries in the device structure. */
|
|
dev->open = &yellowfin_open;
|
|
dev->hard_start_xmit = &yellowfin_start_xmit;
|
|
dev->stop = &yellowfin_close;
|
|
dev->get_stats = &yellowfin_get_stats;
|
|
dev->set_multicast_list = &set_rx_mode;
|
|
dev->do_ioctl = &netdev_ioctl;
|
|
SET_ETHTOOL_OPS(dev, ðtool_ops);
|
|
dev->tx_timeout = yellowfin_tx_timeout;
|
|
dev->watchdog_timeo = TX_TIMEOUT;
|
|
|
|
if (mtu)
|
|
dev->mtu = mtu;
|
|
|
|
i = register_netdev(dev);
|
|
if (i)
|
|
goto err_out_unmap_status;
|
|
|
|
printk(KERN_INFO "%s: %s type %8x at %p, ",
|
|
dev->name, pci_id_tbl[chip_idx].name,
|
|
ioread32(ioaddr + ChipRev), ioaddr);
|
|
for (i = 0; i < 5; i++)
|
|
printk("%2.2x:", dev->dev_addr[i]);
|
|
printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq);
|
|
|
|
if (np->drv_flags & HasMII) {
|
|
int phy, phy_idx = 0;
|
|
for (phy = 0; phy < 32 && phy_idx < MII_CNT; phy++) {
|
|
int mii_status = mdio_read(ioaddr, phy, 1);
|
|
if (mii_status != 0xffff && mii_status != 0x0000) {
|
|
np->phys[phy_idx++] = phy;
|
|
np->advertising = mdio_read(ioaddr, phy, 4);
|
|
printk(KERN_INFO "%s: MII PHY found at address %d, status "
|
|
"0x%4.4x advertising %4.4x.\n",
|
|
dev->name, phy, mii_status, np->advertising);
|
|
}
|
|
}
|
|
np->mii_cnt = phy_idx;
|
|
}
|
|
|
|
find_cnt++;
|
|
|
|
return 0;
|
|
|
|
err_out_unmap_status:
|
|
pci_free_consistent(pdev, STATUS_TOTAL_SIZE, np->tx_status,
|
|
np->tx_status_dma);
|
|
err_out_unmap_rx:
|
|
pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
|
|
err_out_unmap_tx:
|
|
pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
|
|
err_out_cleardev:
|
|
pci_set_drvdata(pdev, NULL);
|
|
pci_iounmap(pdev, ioaddr);
|
|
err_out_free_res:
|
|
pci_release_regions(pdev);
|
|
err_out_free_netdev:
|
|
free_netdev (dev);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int __devinit read_eeprom(void __iomem *ioaddr, int location)
|
|
{
|
|
int bogus_cnt = 10000; /* Typical 33Mhz: 1050 ticks */
|
|
|
|
iowrite8(location, ioaddr + EEAddr);
|
|
iowrite8(0x30 | ((location >> 8) & 7), ioaddr + EECtrl);
|
|
while ((ioread8(ioaddr + EEStatus) & 0x80) && --bogus_cnt > 0)
|
|
;
|
|
return ioread8(ioaddr + EERead);
|
|
}
|
|
|
|
/* MII Managemen Data I/O accesses.
|
|
These routines assume the MDIO controller is idle, and do not exit until
|
|
the command is finished. */
|
|
|
|
static int mdio_read(void __iomem *ioaddr, int phy_id, int location)
|
|
{
|
|
int i;
|
|
|
|
iowrite16((phy_id<<8) + location, ioaddr + MII_Addr);
|
|
iowrite16(1, ioaddr + MII_Cmd);
|
|
for (i = 10000; i >= 0; i--)
|
|
if ((ioread16(ioaddr + MII_Status) & 1) == 0)
|
|
break;
|
|
return ioread16(ioaddr + MII_Rd_Data);
|
|
}
|
|
|
|
static void mdio_write(void __iomem *ioaddr, int phy_id, int location, int value)
|
|
{
|
|
int i;
|
|
|
|
iowrite16((phy_id<<8) + location, ioaddr + MII_Addr);
|
|
iowrite16(value, ioaddr + MII_Wr_Data);
|
|
|
|
/* Wait for the command to finish. */
|
|
for (i = 10000; i >= 0; i--)
|
|
if ((ioread16(ioaddr + MII_Status) & 1) == 0)
|
|
break;
|
|
return;
|
|
}
|
|
|
|
|
|
static int yellowfin_open(struct net_device *dev)
|
|
{
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
void __iomem *ioaddr = yp->base;
|
|
int i;
|
|
|
|
/* Reset the chip. */
|
|
iowrite32(0x80000000, ioaddr + DMACtrl);
|
|
|
|
i = request_irq(dev->irq, &yellowfin_interrupt, IRQF_SHARED, dev->name, dev);
|
|
if (i) return i;
|
|
|
|
if (yellowfin_debug > 1)
|
|
printk(KERN_DEBUG "%s: yellowfin_open() irq %d.\n",
|
|
dev->name, dev->irq);
|
|
|
|
yellowfin_init_ring(dev);
|
|
|
|
iowrite32(yp->rx_ring_dma, ioaddr + RxPtr);
|
|
iowrite32(yp->tx_ring_dma, ioaddr + TxPtr);
|
|
|
|
for (i = 0; i < 6; i++)
|
|
iowrite8(dev->dev_addr[i], ioaddr + StnAddr + i);
|
|
|
|
/* Set up various condition 'select' registers.
|
|
There are no options here. */
|
|
iowrite32(0x00800080, ioaddr + TxIntrSel); /* Interrupt on Tx abort */
|
|
iowrite32(0x00800080, ioaddr + TxBranchSel); /* Branch on Tx abort */
|
|
iowrite32(0x00400040, ioaddr + TxWaitSel); /* Wait on Tx status */
|
|
iowrite32(0x00400040, ioaddr + RxIntrSel); /* Interrupt on Rx done */
|
|
iowrite32(0x00400040, ioaddr + RxBranchSel); /* Branch on Rx error */
|
|
iowrite32(0x00400040, ioaddr + RxWaitSel); /* Wait on Rx done */
|
|
|
|
/* Initialize other registers: with so many this eventually this will
|
|
converted to an offset/value list. */
|
|
iowrite32(dma_ctrl, ioaddr + DMACtrl);
|
|
iowrite16(fifo_cfg, ioaddr + FIFOcfg);
|
|
/* Enable automatic generation of flow control frames, period 0xffff. */
|
|
iowrite32(0x0030FFFF, ioaddr + FlowCtrl);
|
|
|
|
yp->tx_threshold = 32;
|
|
iowrite32(yp->tx_threshold, ioaddr + TxThreshold);
|
|
|
|
if (dev->if_port == 0)
|
|
dev->if_port = yp->default_port;
|
|
|
|
netif_start_queue(dev);
|
|
|
|
/* Setting the Rx mode will start the Rx process. */
|
|
if (yp->drv_flags & IsGigabit) {
|
|
/* We are always in full-duplex mode with gigabit! */
|
|
yp->full_duplex = 1;
|
|
iowrite16(0x01CF, ioaddr + Cnfg);
|
|
} else {
|
|
iowrite16(0x0018, ioaddr + FrameGap0); /* 0060/4060 for non-MII 10baseT */
|
|
iowrite16(0x1018, ioaddr + FrameGap1);
|
|
iowrite16(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg);
|
|
}
|
|
set_rx_mode(dev);
|
|
|
|
/* Enable interrupts by setting the interrupt mask. */
|
|
iowrite16(0x81ff, ioaddr + IntrEnb); /* See enum intr_status_bits */
|
|
iowrite16(0x0000, ioaddr + EventStatus); /* Clear non-interrupting events */
|
|
iowrite32(0x80008000, ioaddr + RxCtrl); /* Start Rx and Tx channels. */
|
|
iowrite32(0x80008000, ioaddr + TxCtrl);
|
|
|
|
if (yellowfin_debug > 2) {
|
|
printk(KERN_DEBUG "%s: Done yellowfin_open().\n",
|
|
dev->name);
|
|
}
|
|
|
|
/* Set the timer to check for link beat. */
|
|
init_timer(&yp->timer);
|
|
yp->timer.expires = jiffies + 3*HZ;
|
|
yp->timer.data = (unsigned long)dev;
|
|
yp->timer.function = &yellowfin_timer; /* timer handler */
|
|
add_timer(&yp->timer);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void yellowfin_timer(unsigned long data)
|
|
{
|
|
struct net_device *dev = (struct net_device *)data;
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
void __iomem *ioaddr = yp->base;
|
|
int next_tick = 60*HZ;
|
|
|
|
if (yellowfin_debug > 3) {
|
|
printk(KERN_DEBUG "%s: Yellowfin timer tick, status %8.8x.\n",
|
|
dev->name, ioread16(ioaddr + IntrStatus));
|
|
}
|
|
|
|
if (yp->mii_cnt) {
|
|
int bmsr = mdio_read(ioaddr, yp->phys[0], MII_BMSR);
|
|
int lpa = mdio_read(ioaddr, yp->phys[0], MII_LPA);
|
|
int negotiated = lpa & yp->advertising;
|
|
if (yellowfin_debug > 1)
|
|
printk(KERN_DEBUG "%s: MII #%d status register is %4.4x, "
|
|
"link partner capability %4.4x.\n",
|
|
dev->name, yp->phys[0], bmsr, lpa);
|
|
|
|
yp->full_duplex = mii_duplex(yp->duplex_lock, negotiated);
|
|
|
|
iowrite16(0x101C | (yp->full_duplex ? 2 : 0), ioaddr + Cnfg);
|
|
|
|
if (bmsr & BMSR_LSTATUS)
|
|
next_tick = 60*HZ;
|
|
else
|
|
next_tick = 3*HZ;
|
|
}
|
|
|
|
yp->timer.expires = jiffies + next_tick;
|
|
add_timer(&yp->timer);
|
|
}
|
|
|
|
static void yellowfin_tx_timeout(struct net_device *dev)
|
|
{
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
void __iomem *ioaddr = yp->base;
|
|
|
|
printk(KERN_WARNING "%s: Yellowfin transmit timed out at %d/%d Tx "
|
|
"status %4.4x, Rx status %4.4x, resetting...\n",
|
|
dev->name, yp->cur_tx, yp->dirty_tx,
|
|
ioread32(ioaddr + TxStatus), ioread32(ioaddr + RxStatus));
|
|
|
|
/* Note: these should be KERN_DEBUG. */
|
|
if (yellowfin_debug) {
|
|
int i;
|
|
printk(KERN_WARNING " Rx ring %p: ", yp->rx_ring);
|
|
for (i = 0; i < RX_RING_SIZE; i++)
|
|
printk(" %8.8x", yp->rx_ring[i].result_status);
|
|
printk("\n"KERN_WARNING" Tx ring %p: ", yp->tx_ring);
|
|
for (i = 0; i < TX_RING_SIZE; i++)
|
|
printk(" %4.4x /%8.8x", yp->tx_status[i].tx_errs,
|
|
yp->tx_ring[i].result_status);
|
|
printk("\n");
|
|
}
|
|
|
|
/* If the hardware is found to hang regularly, we will update the code
|
|
to reinitialize the chip here. */
|
|
dev->if_port = 0;
|
|
|
|
/* Wake the potentially-idle transmit channel. */
|
|
iowrite32(0x10001000, yp->base + TxCtrl);
|
|
if (yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE)
|
|
netif_wake_queue (dev); /* Typical path */
|
|
|
|
dev->trans_start = jiffies;
|
|
yp->stats.tx_errors++;
|
|
}
|
|
|
|
/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
|
|
static void yellowfin_init_ring(struct net_device *dev)
|
|
{
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
int i;
|
|
|
|
yp->tx_full = 0;
|
|
yp->cur_rx = yp->cur_tx = 0;
|
|
yp->dirty_tx = 0;
|
|
|
|
yp->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
|
|
|
|
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
yp->rx_ring[i].dbdma_cmd =
|
|
cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz);
|
|
yp->rx_ring[i].branch_addr = cpu_to_le32(yp->rx_ring_dma +
|
|
((i+1)%RX_RING_SIZE)*sizeof(struct yellowfin_desc));
|
|
}
|
|
|
|
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz);
|
|
yp->rx_skbuff[i] = skb;
|
|
if (skb == NULL)
|
|
break;
|
|
skb->dev = dev; /* Mark as being used by this device. */
|
|
skb_reserve(skb, 2); /* 16 byte align the IP header. */
|
|
yp->rx_ring[i].addr = cpu_to_le32(pci_map_single(yp->pci_dev,
|
|
skb->data, yp->rx_buf_sz, PCI_DMA_FROMDEVICE));
|
|
}
|
|
yp->rx_ring[i-1].dbdma_cmd = cpu_to_le32(CMD_STOP);
|
|
yp->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
|
|
|
|
#define NO_TXSTATS
|
|
#ifdef NO_TXSTATS
|
|
/* In this mode the Tx ring needs only a single descriptor. */
|
|
for (i = 0; i < TX_RING_SIZE; i++) {
|
|
yp->tx_skbuff[i] = NULL;
|
|
yp->tx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP);
|
|
yp->tx_ring[i].branch_addr = cpu_to_le32(yp->tx_ring_dma +
|
|
((i+1)%TX_RING_SIZE)*sizeof(struct yellowfin_desc));
|
|
}
|
|
/* Wrap ring */
|
|
yp->tx_ring[--i].dbdma_cmd = cpu_to_le32(CMD_STOP | BRANCH_ALWAYS);
|
|
#else
|
|
{
|
|
int j;
|
|
|
|
/* Tx ring needs a pair of descriptors, the second for the status. */
|
|
for (i = 0; i < TX_RING_SIZE; i++) {
|
|
j = 2*i;
|
|
yp->tx_skbuff[i] = 0;
|
|
/* Branch on Tx error. */
|
|
yp->tx_ring[j].dbdma_cmd = cpu_to_le32(CMD_STOP);
|
|
yp->tx_ring[j].branch_addr = cpu_to_le32(yp->tx_ring_dma +
|
|
(j+1)*sizeof(struct yellowfin_desc);
|
|
j++;
|
|
if (yp->flags & FullTxStatus) {
|
|
yp->tx_ring[j].dbdma_cmd =
|
|
cpu_to_le32(CMD_TXSTATUS | sizeof(*yp->tx_status));
|
|
yp->tx_ring[j].request_cnt = sizeof(*yp->tx_status);
|
|
yp->tx_ring[j].addr = cpu_to_le32(yp->tx_status_dma +
|
|
i*sizeof(struct tx_status_words);
|
|
} else {
|
|
/* Symbios chips write only tx_errs word. */
|
|
yp->tx_ring[j].dbdma_cmd =
|
|
cpu_to_le32(CMD_TXSTATUS | INTR_ALWAYS | 2);
|
|
yp->tx_ring[j].request_cnt = 2;
|
|
/* Om pade ummmmm... */
|
|
yp->tx_ring[j].addr = cpu_to_le32(yp->tx_status_dma +
|
|
i*sizeof(struct tx_status_words) +
|
|
&(yp->tx_status[0].tx_errs) -
|
|
&(yp->tx_status[0]));
|
|
}
|
|
yp->tx_ring[j].branch_addr = cpu_to_le32(yp->tx_ring_dma +
|
|
((j+1)%(2*TX_RING_SIZE))*sizeof(struct yellowfin_desc));
|
|
}
|
|
/* Wrap ring */
|
|
yp->tx_ring[++j].dbdma_cmd |= cpu_to_le32(BRANCH_ALWAYS | INTR_ALWAYS);
|
|
}
|
|
#endif
|
|
yp->tx_tail_desc = &yp->tx_status[0];
|
|
return;
|
|
}
|
|
|
|
static int yellowfin_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
unsigned entry;
|
|
int len = skb->len;
|
|
|
|
netif_stop_queue (dev);
|
|
|
|
/* Note: Ordering is important here, set the field with the
|
|
"ownership" bit last, and only then increment cur_tx. */
|
|
|
|
/* Calculate the next Tx descriptor entry. */
|
|
entry = yp->cur_tx % TX_RING_SIZE;
|
|
|
|
if (gx_fix) { /* Note: only works for paddable protocols e.g. IP. */
|
|
int cacheline_end = ((unsigned long)skb->data + skb->len) % 32;
|
|
/* Fix GX chipset errata. */
|
|
if (cacheline_end > 24 || cacheline_end == 0) {
|
|
len = skb->len + 32 - cacheline_end + 1;
|
|
if (skb_padto(skb, len)) {
|
|
yp->tx_skbuff[entry] = NULL;
|
|
netif_wake_queue(dev);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
yp->tx_skbuff[entry] = skb;
|
|
|
|
#ifdef NO_TXSTATS
|
|
yp->tx_ring[entry].addr = cpu_to_le32(pci_map_single(yp->pci_dev,
|
|
skb->data, len, PCI_DMA_TODEVICE));
|
|
yp->tx_ring[entry].result_status = 0;
|
|
if (entry >= TX_RING_SIZE-1) {
|
|
/* New stop command. */
|
|
yp->tx_ring[0].dbdma_cmd = cpu_to_le32(CMD_STOP);
|
|
yp->tx_ring[TX_RING_SIZE-1].dbdma_cmd =
|
|
cpu_to_le32(CMD_TX_PKT|BRANCH_ALWAYS | len);
|
|
} else {
|
|
yp->tx_ring[entry+1].dbdma_cmd = cpu_to_le32(CMD_STOP);
|
|
yp->tx_ring[entry].dbdma_cmd =
|
|
cpu_to_le32(CMD_TX_PKT | BRANCH_IFTRUE | len);
|
|
}
|
|
yp->cur_tx++;
|
|
#else
|
|
yp->tx_ring[entry<<1].request_cnt = len;
|
|
yp->tx_ring[entry<<1].addr = cpu_to_le32(pci_map_single(yp->pci_dev,
|
|
skb->data, len, PCI_DMA_TODEVICE));
|
|
/* The input_last (status-write) command is constant, but we must
|
|
rewrite the subsequent 'stop' command. */
|
|
|
|
yp->cur_tx++;
|
|
{
|
|
unsigned next_entry = yp->cur_tx % TX_RING_SIZE;
|
|
yp->tx_ring[next_entry<<1].dbdma_cmd = cpu_to_le32(CMD_STOP);
|
|
}
|
|
/* Final step -- overwrite the old 'stop' command. */
|
|
|
|
yp->tx_ring[entry<<1].dbdma_cmd =
|
|
cpu_to_le32( ((entry % 6) == 0 ? CMD_TX_PKT|INTR_ALWAYS|BRANCH_IFTRUE :
|
|
CMD_TX_PKT | BRANCH_IFTRUE) | len);
|
|
#endif
|
|
|
|
/* Non-x86 Todo: explicitly flush cache lines here. */
|
|
|
|
/* Wake the potentially-idle transmit channel. */
|
|
iowrite32(0x10001000, yp->base + TxCtrl);
|
|
|
|
if (yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE)
|
|
netif_start_queue (dev); /* Typical path */
|
|
else
|
|
yp->tx_full = 1;
|
|
dev->trans_start = jiffies;
|
|
|
|
if (yellowfin_debug > 4) {
|
|
printk(KERN_DEBUG "%s: Yellowfin transmit frame #%d queued in slot %d.\n",
|
|
dev->name, yp->cur_tx, entry);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* The interrupt handler does all of the Rx thread work and cleans up
|
|
after the Tx thread. */
|
|
static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance)
|
|
{
|
|
struct net_device *dev = dev_instance;
|
|
struct yellowfin_private *yp;
|
|
void __iomem *ioaddr;
|
|
int boguscnt = max_interrupt_work;
|
|
unsigned int handled = 0;
|
|
|
|
yp = netdev_priv(dev);
|
|
ioaddr = yp->base;
|
|
|
|
spin_lock (&yp->lock);
|
|
|
|
do {
|
|
u16 intr_status = ioread16(ioaddr + IntrClear);
|
|
|
|
if (yellowfin_debug > 4)
|
|
printk(KERN_DEBUG "%s: Yellowfin interrupt, status %4.4x.\n",
|
|
dev->name, intr_status);
|
|
|
|
if (intr_status == 0)
|
|
break;
|
|
handled = 1;
|
|
|
|
if (intr_status & (IntrRxDone | IntrEarlyRx)) {
|
|
yellowfin_rx(dev);
|
|
iowrite32(0x10001000, ioaddr + RxCtrl); /* Wake Rx engine. */
|
|
}
|
|
|
|
#ifdef NO_TXSTATS
|
|
for (; yp->cur_tx - yp->dirty_tx > 0; yp->dirty_tx++) {
|
|
int entry = yp->dirty_tx % TX_RING_SIZE;
|
|
struct sk_buff *skb;
|
|
|
|
if (yp->tx_ring[entry].result_status == 0)
|
|
break;
|
|
skb = yp->tx_skbuff[entry];
|
|
yp->stats.tx_packets++;
|
|
yp->stats.tx_bytes += skb->len;
|
|
/* Free the original skb. */
|
|
pci_unmap_single(yp->pci_dev, yp->tx_ring[entry].addr,
|
|
skb->len, PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_irq(skb);
|
|
yp->tx_skbuff[entry] = NULL;
|
|
}
|
|
if (yp->tx_full
|
|
&& yp->cur_tx - yp->dirty_tx < TX_QUEUE_SIZE - 4) {
|
|
/* The ring is no longer full, clear tbusy. */
|
|
yp->tx_full = 0;
|
|
netif_wake_queue(dev);
|
|
}
|
|
#else
|
|
if ((intr_status & IntrTxDone) || (yp->tx_tail_desc->tx_errs)) {
|
|
unsigned dirty_tx = yp->dirty_tx;
|
|
|
|
for (dirty_tx = yp->dirty_tx; yp->cur_tx - dirty_tx > 0;
|
|
dirty_tx++) {
|
|
/* Todo: optimize this. */
|
|
int entry = dirty_tx % TX_RING_SIZE;
|
|
u16 tx_errs = yp->tx_status[entry].tx_errs;
|
|
struct sk_buff *skb;
|
|
|
|
#ifndef final_version
|
|
if (yellowfin_debug > 5)
|
|
printk(KERN_DEBUG "%s: Tx queue %d check, Tx status "
|
|
"%4.4x %4.4x %4.4x %4.4x.\n",
|
|
dev->name, entry,
|
|
yp->tx_status[entry].tx_cnt,
|
|
yp->tx_status[entry].tx_errs,
|
|
yp->tx_status[entry].total_tx_cnt,
|
|
yp->tx_status[entry].paused);
|
|
#endif
|
|
if (tx_errs == 0)
|
|
break; /* It still hasn't been Txed */
|
|
skb = yp->tx_skbuff[entry];
|
|
if (tx_errs & 0xF810) {
|
|
/* There was an major error, log it. */
|
|
#ifndef final_version
|
|
if (yellowfin_debug > 1)
|
|
printk(KERN_DEBUG "%s: Transmit error, Tx status %4.4x.\n",
|
|
dev->name, tx_errs);
|
|
#endif
|
|
yp->stats.tx_errors++;
|
|
if (tx_errs & 0xF800) yp->stats.tx_aborted_errors++;
|
|
if (tx_errs & 0x0800) yp->stats.tx_carrier_errors++;
|
|
if (tx_errs & 0x2000) yp->stats.tx_window_errors++;
|
|
if (tx_errs & 0x8000) yp->stats.tx_fifo_errors++;
|
|
} else {
|
|
#ifndef final_version
|
|
if (yellowfin_debug > 4)
|
|
printk(KERN_DEBUG "%s: Normal transmit, Tx status %4.4x.\n",
|
|
dev->name, tx_errs);
|
|
#endif
|
|
yp->stats.tx_bytes += skb->len;
|
|
yp->stats.collisions += tx_errs & 15;
|
|
yp->stats.tx_packets++;
|
|
}
|
|
/* Free the original skb. */
|
|
pci_unmap_single(yp->pci_dev,
|
|
yp->tx_ring[entry<<1].addr, skb->len,
|
|
PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_irq(skb);
|
|
yp->tx_skbuff[entry] = 0;
|
|
/* Mark status as empty. */
|
|
yp->tx_status[entry].tx_errs = 0;
|
|
}
|
|
|
|
#ifndef final_version
|
|
if (yp->cur_tx - dirty_tx > TX_RING_SIZE) {
|
|
printk(KERN_ERR "%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
|
|
dev->name, dirty_tx, yp->cur_tx, yp->tx_full);
|
|
dirty_tx += TX_RING_SIZE;
|
|
}
|
|
#endif
|
|
|
|
if (yp->tx_full
|
|
&& yp->cur_tx - dirty_tx < TX_QUEUE_SIZE - 2) {
|
|
/* The ring is no longer full, clear tbusy. */
|
|
yp->tx_full = 0;
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
yp->dirty_tx = dirty_tx;
|
|
yp->tx_tail_desc = &yp->tx_status[dirty_tx % TX_RING_SIZE];
|
|
}
|
|
#endif
|
|
|
|
/* Log errors and other uncommon events. */
|
|
if (intr_status & 0x2ee) /* Abnormal error summary. */
|
|
yellowfin_error(dev, intr_status);
|
|
|
|
if (--boguscnt < 0) {
|
|
printk(KERN_WARNING "%s: Too much work at interrupt, "
|
|
"status=0x%4.4x.\n",
|
|
dev->name, intr_status);
|
|
break;
|
|
}
|
|
} while (1);
|
|
|
|
if (yellowfin_debug > 3)
|
|
printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
|
|
dev->name, ioread16(ioaddr + IntrStatus));
|
|
|
|
spin_unlock (&yp->lock);
|
|
return IRQ_RETVAL(handled);
|
|
}
|
|
|
|
/* This routine is logically part of the interrupt handler, but separated
|
|
for clarity and better register allocation. */
|
|
static int yellowfin_rx(struct net_device *dev)
|
|
{
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
int entry = yp->cur_rx % RX_RING_SIZE;
|
|
int boguscnt = yp->dirty_rx + RX_RING_SIZE - yp->cur_rx;
|
|
|
|
if (yellowfin_debug > 4) {
|
|
printk(KERN_DEBUG " In yellowfin_rx(), entry %d status %8.8x.\n",
|
|
entry, yp->rx_ring[entry].result_status);
|
|
printk(KERN_DEBUG " #%d desc. %8.8x %8.8x %8.8x.\n",
|
|
entry, yp->rx_ring[entry].dbdma_cmd, yp->rx_ring[entry].addr,
|
|
yp->rx_ring[entry].result_status);
|
|
}
|
|
|
|
/* If EOP is set on the next entry, it's a new packet. Send it up. */
|
|
while (1) {
|
|
struct yellowfin_desc *desc = &yp->rx_ring[entry];
|
|
struct sk_buff *rx_skb = yp->rx_skbuff[entry];
|
|
s16 frame_status;
|
|
u16 desc_status;
|
|
int data_size;
|
|
u8 *buf_addr;
|
|
|
|
if(!desc->result_status)
|
|
break;
|
|
pci_dma_sync_single_for_cpu(yp->pci_dev, desc->addr,
|
|
yp->rx_buf_sz, PCI_DMA_FROMDEVICE);
|
|
desc_status = le32_to_cpu(desc->result_status) >> 16;
|
|
buf_addr = rx_skb->data;
|
|
data_size = (le32_to_cpu(desc->dbdma_cmd) -
|
|
le32_to_cpu(desc->result_status)) & 0xffff;
|
|
frame_status = le16_to_cpu(get_unaligned((s16*)&(buf_addr[data_size - 2])));
|
|
if (yellowfin_debug > 4)
|
|
printk(KERN_DEBUG " yellowfin_rx() status was %4.4x.\n",
|
|
frame_status);
|
|
if (--boguscnt < 0)
|
|
break;
|
|
if ( ! (desc_status & RX_EOP)) {
|
|
if (data_size != 0)
|
|
printk(KERN_WARNING "%s: Oversized Ethernet frame spanned multiple buffers,"
|
|
" status %4.4x, data_size %d!\n", dev->name, desc_status, data_size);
|
|
yp->stats.rx_length_errors++;
|
|
} else if ((yp->drv_flags & IsGigabit) && (frame_status & 0x0038)) {
|
|
/* There was a error. */
|
|
if (yellowfin_debug > 3)
|
|
printk(KERN_DEBUG " yellowfin_rx() Rx error was %4.4x.\n",
|
|
frame_status);
|
|
yp->stats.rx_errors++;
|
|
if (frame_status & 0x0060) yp->stats.rx_length_errors++;
|
|
if (frame_status & 0x0008) yp->stats.rx_frame_errors++;
|
|
if (frame_status & 0x0010) yp->stats.rx_crc_errors++;
|
|
if (frame_status < 0) yp->stats.rx_dropped++;
|
|
} else if ( !(yp->drv_flags & IsGigabit) &&
|
|
((buf_addr[data_size-1] & 0x85) || buf_addr[data_size-2] & 0xC0)) {
|
|
u8 status1 = buf_addr[data_size-2];
|
|
u8 status2 = buf_addr[data_size-1];
|
|
yp->stats.rx_errors++;
|
|
if (status1 & 0xC0) yp->stats.rx_length_errors++;
|
|
if (status2 & 0x03) yp->stats.rx_frame_errors++;
|
|
if (status2 & 0x04) yp->stats.rx_crc_errors++;
|
|
if (status2 & 0x80) yp->stats.rx_dropped++;
|
|
#ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */
|
|
} else if ((yp->flags & HasMACAddrBug) &&
|
|
memcmp(le32_to_cpu(yp->rx_ring_dma +
|
|
entry*sizeof(struct yellowfin_desc)),
|
|
dev->dev_addr, 6) != 0 &&
|
|
memcmp(le32_to_cpu(yp->rx_ring_dma +
|
|
entry*sizeof(struct yellowfin_desc)),
|
|
"\377\377\377\377\377\377", 6) != 0) {
|
|
if (bogus_rx++ == 0)
|
|
printk(KERN_WARNING "%s: Bad frame to %2.2x:%2.2x:%2.2x:%2.2x:"
|
|
"%2.2x:%2.2x.\n",
|
|
dev->name, buf_addr[0], buf_addr[1], buf_addr[2],
|
|
buf_addr[3], buf_addr[4], buf_addr[5]);
|
|
#endif
|
|
} else {
|
|
struct sk_buff *skb;
|
|
int pkt_len = data_size -
|
|
(yp->chip_id ? 7 : 8 + buf_addr[data_size - 8]);
|
|
/* To verify: Yellowfin Length should omit the CRC! */
|
|
|
|
#ifndef final_version
|
|
if (yellowfin_debug > 4)
|
|
printk(KERN_DEBUG " yellowfin_rx() normal Rx pkt length %d"
|
|
" of %d, bogus_cnt %d.\n",
|
|
pkt_len, data_size, boguscnt);
|
|
#endif
|
|
/* Check if the packet is long enough to just pass up the skbuff
|
|
without copying to a properly sized skbuff. */
|
|
if (pkt_len > rx_copybreak) {
|
|
skb_put(skb = rx_skb, pkt_len);
|
|
pci_unmap_single(yp->pci_dev,
|
|
yp->rx_ring[entry].addr,
|
|
yp->rx_buf_sz,
|
|
PCI_DMA_FROMDEVICE);
|
|
yp->rx_skbuff[entry] = NULL;
|
|
} else {
|
|
skb = dev_alloc_skb(pkt_len + 2);
|
|
if (skb == NULL)
|
|
break;
|
|
skb->dev = dev;
|
|
skb_reserve(skb, 2); /* 16 byte align the IP header */
|
|
eth_copy_and_sum(skb, rx_skb->data, pkt_len, 0);
|
|
skb_put(skb, pkt_len);
|
|
pci_dma_sync_single_for_device(yp->pci_dev, desc->addr,
|
|
yp->rx_buf_sz,
|
|
PCI_DMA_FROMDEVICE);
|
|
}
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
netif_rx(skb);
|
|
dev->last_rx = jiffies;
|
|
yp->stats.rx_packets++;
|
|
yp->stats.rx_bytes += pkt_len;
|
|
}
|
|
entry = (++yp->cur_rx) % RX_RING_SIZE;
|
|
}
|
|
|
|
/* Refill the Rx ring buffers. */
|
|
for (; yp->cur_rx - yp->dirty_rx > 0; yp->dirty_rx++) {
|
|
entry = yp->dirty_rx % RX_RING_SIZE;
|
|
if (yp->rx_skbuff[entry] == NULL) {
|
|
struct sk_buff *skb = dev_alloc_skb(yp->rx_buf_sz);
|
|
if (skb == NULL)
|
|
break; /* Better luck next round. */
|
|
yp->rx_skbuff[entry] = skb;
|
|
skb->dev = dev; /* Mark as being used by this device. */
|
|
skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
|
|
yp->rx_ring[entry].addr = cpu_to_le32(pci_map_single(yp->pci_dev,
|
|
skb->data, yp->rx_buf_sz, PCI_DMA_FROMDEVICE));
|
|
}
|
|
yp->rx_ring[entry].dbdma_cmd = cpu_to_le32(CMD_STOP);
|
|
yp->rx_ring[entry].result_status = 0; /* Clear complete bit. */
|
|
if (entry != 0)
|
|
yp->rx_ring[entry - 1].dbdma_cmd =
|
|
cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | yp->rx_buf_sz);
|
|
else
|
|
yp->rx_ring[RX_RING_SIZE - 1].dbdma_cmd =
|
|
cpu_to_le32(CMD_RX_BUF | INTR_ALWAYS | BRANCH_ALWAYS
|
|
| yp->rx_buf_sz);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void yellowfin_error(struct net_device *dev, int intr_status)
|
|
{
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
|
|
printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n",
|
|
dev->name, intr_status);
|
|
/* Hmmmmm, it's not clear what to do here. */
|
|
if (intr_status & (IntrTxPCIErr | IntrTxPCIFault))
|
|
yp->stats.tx_errors++;
|
|
if (intr_status & (IntrRxPCIErr | IntrRxPCIFault))
|
|
yp->stats.rx_errors++;
|
|
}
|
|
|
|
static int yellowfin_close(struct net_device *dev)
|
|
{
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
void __iomem *ioaddr = yp->base;
|
|
int i;
|
|
|
|
netif_stop_queue (dev);
|
|
|
|
if (yellowfin_debug > 1) {
|
|
printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %4.4x "
|
|
"Rx %4.4x Int %2.2x.\n",
|
|
dev->name, ioread16(ioaddr + TxStatus),
|
|
ioread16(ioaddr + RxStatus),
|
|
ioread16(ioaddr + IntrStatus));
|
|
printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n",
|
|
dev->name, yp->cur_tx, yp->dirty_tx, yp->cur_rx, yp->dirty_rx);
|
|
}
|
|
|
|
/* Disable interrupts by clearing the interrupt mask. */
|
|
iowrite16(0x0000, ioaddr + IntrEnb);
|
|
|
|
/* Stop the chip's Tx and Rx processes. */
|
|
iowrite32(0x80000000, ioaddr + RxCtrl);
|
|
iowrite32(0x80000000, ioaddr + TxCtrl);
|
|
|
|
del_timer(&yp->timer);
|
|
|
|
#if defined(__i386__)
|
|
if (yellowfin_debug > 2) {
|
|
printk("\n"KERN_DEBUG" Tx ring at %8.8llx:\n",
|
|
(unsigned long long)yp->tx_ring_dma);
|
|
for (i = 0; i < TX_RING_SIZE*2; i++)
|
|
printk(" %c #%d desc. %8.8x %8.8x %8.8x %8.8x.\n",
|
|
ioread32(ioaddr + TxPtr) == (long)&yp->tx_ring[i] ? '>' : ' ',
|
|
i, yp->tx_ring[i].dbdma_cmd, yp->tx_ring[i].addr,
|
|
yp->tx_ring[i].branch_addr, yp->tx_ring[i].result_status);
|
|
printk(KERN_DEBUG " Tx status %p:\n", yp->tx_status);
|
|
for (i = 0; i < TX_RING_SIZE; i++)
|
|
printk(" #%d status %4.4x %4.4x %4.4x %4.4x.\n",
|
|
i, yp->tx_status[i].tx_cnt, yp->tx_status[i].tx_errs,
|
|
yp->tx_status[i].total_tx_cnt, yp->tx_status[i].paused);
|
|
|
|
printk("\n"KERN_DEBUG " Rx ring %8.8llx:\n",
|
|
(unsigned long long)yp->rx_ring_dma);
|
|
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
printk(KERN_DEBUG " %c #%d desc. %8.8x %8.8x %8.8x\n",
|
|
ioread32(ioaddr + RxPtr) == (long)&yp->rx_ring[i] ? '>' : ' ',
|
|
i, yp->rx_ring[i].dbdma_cmd, yp->rx_ring[i].addr,
|
|
yp->rx_ring[i].result_status);
|
|
if (yellowfin_debug > 6) {
|
|
if (get_unaligned((u8*)yp->rx_ring[i].addr) != 0x69) {
|
|
int j;
|
|
for (j = 0; j < 0x50; j++)
|
|
printk(" %4.4x",
|
|
get_unaligned(((u16*)yp->rx_ring[i].addr) + j));
|
|
printk("\n");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif /* __i386__ debugging only */
|
|
|
|
free_irq(dev->irq, dev);
|
|
|
|
/* Free all the skbuffs in the Rx queue. */
|
|
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
yp->rx_ring[i].dbdma_cmd = cpu_to_le32(CMD_STOP);
|
|
yp->rx_ring[i].addr = 0xBADF00D0; /* An invalid address. */
|
|
if (yp->rx_skbuff[i]) {
|
|
dev_kfree_skb(yp->rx_skbuff[i]);
|
|
}
|
|
yp->rx_skbuff[i] = NULL;
|
|
}
|
|
for (i = 0; i < TX_RING_SIZE; i++) {
|
|
if (yp->tx_skbuff[i])
|
|
dev_kfree_skb(yp->tx_skbuff[i]);
|
|
yp->tx_skbuff[i] = NULL;
|
|
}
|
|
|
|
#ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */
|
|
if (yellowfin_debug > 0) {
|
|
printk(KERN_DEBUG "%s: Received %d frames that we should not have.\n",
|
|
dev->name, bogus_rx);
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct net_device_stats *yellowfin_get_stats(struct net_device *dev)
|
|
{
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
return &yp->stats;
|
|
}
|
|
|
|
/* Set or clear the multicast filter for this adaptor. */
|
|
|
|
static void set_rx_mode(struct net_device *dev)
|
|
{
|
|
struct yellowfin_private *yp = netdev_priv(dev);
|
|
void __iomem *ioaddr = yp->base;
|
|
u16 cfg_value = ioread16(ioaddr + Cnfg);
|
|
|
|
/* Stop the Rx process to change any value. */
|
|
iowrite16(cfg_value & ~0x1000, ioaddr + Cnfg);
|
|
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
|
|
iowrite16(0x000F, ioaddr + AddrMode);
|
|
} else if ((dev->mc_count > 64) || (dev->flags & IFF_ALLMULTI)) {
|
|
/* Too many to filter well, or accept all multicasts. */
|
|
iowrite16(0x000B, ioaddr + AddrMode);
|
|
} else if (dev->mc_count > 0) { /* Must use the multicast hash table. */
|
|
struct dev_mc_list *mclist;
|
|
u16 hash_table[4];
|
|
int i;
|
|
memset(hash_table, 0, sizeof(hash_table));
|
|
for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
|
|
i++, mclist = mclist->next) {
|
|
unsigned int bit;
|
|
|
|
/* Due to a bug in the early chip versions, multiple filter
|
|
slots must be set for each address. */
|
|
if (yp->drv_flags & HasMulticastBug) {
|
|
bit = (ether_crc_le(3, mclist->dmi_addr) >> 3) & 0x3f;
|
|
hash_table[bit >> 4] |= (1 << bit);
|
|
bit = (ether_crc_le(4, mclist->dmi_addr) >> 3) & 0x3f;
|
|
hash_table[bit >> 4] |= (1 << bit);
|
|
bit = (ether_crc_le(5, mclist->dmi_addr) >> 3) & 0x3f;
|
|
hash_table[bit >> 4] |= (1 << bit);
|
|
}
|
|
bit = (ether_crc_le(6, mclist->dmi_addr) >> 3) & 0x3f;
|
|
hash_table[bit >> 4] |= (1 << bit);
|
|
}
|
|
/* Copy the hash table to the chip. */
|
|
for (i = 0; i < 4; i++)
|
|
iowrite16(hash_table[i], ioaddr + HashTbl + i*2);
|
|
iowrite16(0x0003, ioaddr + AddrMode);
|
|
} else { /* Normal, unicast/broadcast-only mode. */
|
|
iowrite16(0x0001, ioaddr + AddrMode);
|
|
}
|
|
/* Restart the Rx process. */
|
|
iowrite16(cfg_value | 0x1000, ioaddr + Cnfg);
|
|
}
|
|
|
|
static void yellowfin_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
|
|
{
|
|
struct yellowfin_private *np = netdev_priv(dev);
|
|
strcpy(info->driver, DRV_NAME);
|
|
strcpy(info->version, DRV_VERSION);
|
|
strcpy(info->bus_info, pci_name(np->pci_dev));
|
|
}
|
|
|
|
static const struct ethtool_ops ethtool_ops = {
|
|
.get_drvinfo = yellowfin_get_drvinfo
|
|
};
|
|
|
|
static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
|
|
{
|
|
struct yellowfin_private *np = netdev_priv(dev);
|
|
void __iomem *ioaddr = np->base;
|
|
struct mii_ioctl_data *data = if_mii(rq);
|
|
|
|
switch(cmd) {
|
|
case SIOCGMIIPHY: /* Get address of MII PHY in use. */
|
|
data->phy_id = np->phys[0] & 0x1f;
|
|
/* Fall Through */
|
|
|
|
case SIOCGMIIREG: /* Read MII PHY register. */
|
|
data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f, data->reg_num & 0x1f);
|
|
return 0;
|
|
|
|
case SIOCSMIIREG: /* Write MII PHY register. */
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
if (data->phy_id == np->phys[0]) {
|
|
u16 value = data->val_in;
|
|
switch (data->reg_num) {
|
|
case 0:
|
|
/* Check for autonegotiation on or reset. */
|
|
np->medialock = (value & 0x9000) ? 0 : 1;
|
|
if (np->medialock)
|
|
np->full_duplex = (value & 0x0100) ? 1 : 0;
|
|
break;
|
|
case 4: np->advertising = value; break;
|
|
}
|
|
/* Perhaps check_duplex(dev), depending on chip semantics. */
|
|
}
|
|
mdio_write(ioaddr, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
|
|
return 0;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
|
|
static void __devexit yellowfin_remove_one (struct pci_dev *pdev)
|
|
{
|
|
struct net_device *dev = pci_get_drvdata(pdev);
|
|
struct yellowfin_private *np;
|
|
|
|
BUG_ON(!dev);
|
|
np = netdev_priv(dev);
|
|
|
|
pci_free_consistent(pdev, STATUS_TOTAL_SIZE, np->tx_status,
|
|
np->tx_status_dma);
|
|
pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
|
|
pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
|
|
unregister_netdev (dev);
|
|
|
|
pci_iounmap(pdev, np->base);
|
|
|
|
pci_release_regions (pdev);
|
|
|
|
free_netdev (dev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
|
|
|
|
static struct pci_driver yellowfin_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = yellowfin_pci_tbl,
|
|
.probe = yellowfin_init_one,
|
|
.remove = __devexit_p(yellowfin_remove_one),
|
|
};
|
|
|
|
|
|
static int __init yellowfin_init (void)
|
|
{
|
|
/* when a module, this is printed whether or not devices are found in probe */
|
|
#ifdef MODULE
|
|
printk(version);
|
|
#endif
|
|
return pci_register_driver(&yellowfin_driver);
|
|
}
|
|
|
|
|
|
static void __exit yellowfin_cleanup (void)
|
|
{
|
|
pci_unregister_driver (&yellowfin_driver);
|
|
}
|
|
|
|
|
|
module_init(yellowfin_init);
|
|
module_exit(yellowfin_cleanup);
|
|
|
|
/*
|
|
* Local variables:
|
|
* compile-command: "gcc -DMODULE -Wall -Wstrict-prototypes -O6 -c yellowfin.c"
|
|
* compile-command-alphaLX: "gcc -DMODULE -Wall -Wstrict-prototypes -O2 -c yellowfin.c -fomit-frame-pointer -fno-strength-reduce -mno-fp-regs -Wa,-m21164a -DBWX_USABLE -DBWIO_ENABLED"
|
|
* simple-compile-command: "gcc -DMODULE -O6 -c yellowfin.c"
|
|
* c-indent-level: 4
|
|
* c-basic-offset: 4
|
|
* tab-width: 4
|
|
* End:
|
|
*/
|