* [PATCH 1/2] net: packetengines: remove obsolete hamachi driver
2026-04-22 4:48 [PATCH 0/2] net: packetengines: remove obsolete PCI drivers Mingyu Wang
@ 2026-04-22 4:48 ` Mingyu Wang
2026-04-22 13:04 ` Andrew Lunn
2026-04-22 4:48 ` [PATCH 2/2] net: packetengines: remove obsolete yellowfin driver and vendor dir Mingyu Wang
1 sibling, 1 reply; 5+ messages in thread
From: Mingyu Wang @ 2026-04-22 4:48 UTC (permalink / raw)
To: andrew+netdev, davem, edumazet, kuba, pabeni
Cc: tglx, mingo, netdev, linux-kernel, Mingyu Wang
The PacketEngine Hamachi driver is for PCI hardware that has been
obsolete for over two decades. It recently triggered arithmetic
exceptions during automated fuzzing.
As suggested by maintainers, remove the driver entirely to eliminate
dead code and reduce the maintenance burden.
Signed-off-by: Mingyu Wang <25181214217@stu.xidian.edu.cn>
---
drivers/net/ethernet/packetengines/Kconfig | 10 -
drivers/net/ethernet/packetengines/Makefile | 1 -
drivers/net/ethernet/packetengines/hamachi.c | 1967 ------------------
3 files changed, 1978 deletions(-)
delete mode 100644 drivers/net/ethernet/packetengines/hamachi.c
diff --git a/drivers/net/ethernet/packetengines/Kconfig b/drivers/net/ethernet/packetengines/Kconfig
index de91331dcb7d..8a255f0e7b44 100644
--- a/drivers/net/ethernet/packetengines/Kconfig
+++ b/drivers/net/ethernet/packetengines/Kconfig
@@ -17,16 +17,6 @@ config NET_VENDOR_PACKET_ENGINES
if NET_VENDOR_PACKET_ENGINES
-config HAMACHI
- tristate "Packet Engines Hamachi GNIC-II support"
- depends on PCI
- select MII
- help
- If you have a Gigabit Ethernet card of this type, say Y here.
-
- To compile this driver as a module, choose M here. The module will be
- called hamachi.
-
config YELLOWFIN
tristate "Packet Engines Yellowfin Gigabit-NIC support"
depends on PCI
diff --git a/drivers/net/ethernet/packetengines/Makefile b/drivers/net/ethernet/packetengines/Makefile
index cf054b796d11..62a165ff2b26 100644
--- a/drivers/net/ethernet/packetengines/Makefile
+++ b/drivers/net/ethernet/packetengines/Makefile
@@ -3,5 +3,4 @@
# Makefile for the Packet Engines network device drivers.
#
-obj-$(CONFIG_HAMACHI) += hamachi.o
obj-$(CONFIG_YELLOWFIN) += yellowfin.o
diff --git a/drivers/net/ethernet/packetengines/hamachi.c b/drivers/net/ethernet/packetengines/hamachi.c
deleted file mode 100644
index b0de7e9f12a5..000000000000
--- a/drivers/net/ethernet/packetengines/hamachi.c
+++ /dev/null
@@ -1,1967 +0,0 @@
-/* hamachi.c: A Packet Engines GNIC-II Gigabit Ethernet driver for Linux. */
-/*
- Written 1998-2000 by Donald Becker.
- Updates 2000 by Keith Underwood.
-
- 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.
-
- 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 is for the Packet Engines GNIC-II PCI Gigabit Ethernet
- adapter.
-
- Support and updates available at
- http://www.scyld.com/network/hamachi.html
- [link no longer provides useful info -jgarzik]
- or
- http://www.parl.clemson.edu/~keithu/hamachi.html
-
-*/
-
-#define DRV_NAME "hamachi"
-#define DRV_VERSION "2.1"
-#define DRV_RELDATE "Sept 11, 2006"
-
-
-/* A few user-configurable values. */
-
-static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
-#define final_version
-#define hamachi_debug debug
-/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
-static int max_interrupt_work = 40;
-static int mtu;
-/* Default values selected by testing on a dual processor PIII-450 */
-/* These six interrupt control parameters may be set directly when loading the
- * module, or through the rx_params and tx_params variables
- */
-static int max_rx_latency = 0x11;
-static int max_rx_gap = 0x05;
-static int min_rx_pkt = 0x18;
-static int max_tx_latency = 0x00;
-static int max_tx_gap = 0x00;
-static int min_tx_pkt = 0x30;
-
-/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
- -Setting to > 1518 causes all frames to be copied
- -Setting to 0 disables copies
-*/
-static int rx_copybreak;
-
-/* An override for the hardware detection of bus width.
- Set to 1 to force 32 bit PCI bus detection. Set to 4 to force 64 bit.
- Add 2 to disable parity detection.
-*/
-static int force32;
-
-
-/* Used to pass the media type, etc.
- These exist for driver interoperability.
- No media types are currently defined.
- - The lower 4 bits are reserved for the media type.
- - The next three bits may be set to one of the following:
- 0x00000000 : Autodetect PCI bus
- 0x00000010 : Force 32 bit PCI bus
- 0x00000020 : Disable parity detection
- 0x00000040 : Force 64 bit PCI bus
- Default is autodetect
- - The next bit can be used to force half-duplex. This is a bad
- idea since no known implementations implement half-duplex, and,
- in general, half-duplex for gigabit ethernet is a bad idea.
- 0x00000080 : Force half-duplex
- Default is full-duplex.
- - In the original driver, the ninth bit could be used to force
- full-duplex. Maintain that for compatibility
- 0x00000200 : Force full-duplex
-*/
-#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};
-/* The Hamachi chipset supports 3 parameters each for Rx and Tx
- * interruput management. Parameters will be loaded as specified into
- * the TxIntControl and RxIntControl registers.
- *
- * The registers are arranged as follows:
- * 23 - 16 15 - 8 7 - 0
- * _________________________________
- * | min_pkt | max_gap | max_latency |
- * ---------------------------------
- * min_pkt : The minimum number of packets processed between
- * interrupts.
- * max_gap : The maximum inter-packet gap in units of 8.192 us
- * max_latency : The absolute time between interrupts in units of 8.192 us
- *
- */
-static int rx_params[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
-static int tx_params[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1};
-
-/* 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, except for
- excessive memory usage */
-/* Empirically it appears that the Tx ring needs to be a little bigger
- for these Gbit adapters or you get into an overrun condition really
- easily. Also, things appear to work a bit better in back-to-back
- configurations if the Rx ring is 8 times the size of the Tx ring
-*/
-#define TX_RING_SIZE 64
-#define RX_RING_SIZE 512
-#define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct hamachi_desc)
-#define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct hamachi_desc)
-
-/*
- * Enable netdev_ioctl. Added interrupt coalescing parameter adjustment.
- * 2/19/99 Pete Wyckoff <wyckoff@ca.sandia.gov>
- */
-
-/* play with 64-bit addrlen; seems to be a teensy bit slower --pw */
-/* #define ADDRLEN 64 */
-
-/*
- * RX_CHECKSUM turns on card-generated receive checksum generation for
- * TCP and UDP packets. Otherwise the upper layers do the calculation.
- * 3/10/1999 Pete Wyckoff <wyckoff@ca.sandia.gov>
- */
-#define RX_CHECKSUM
-
-/* Operational parameters that usually are not changed. */
-/* Time in jiffies before concluding the transmitter is hung. */
-#define TX_TIMEOUT (5*HZ)
-
-#include <linux/capability.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/time.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/ethtool.h>
-#include <linux/mii.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/ip.h>
-#include <linux/delay.h>
-#include <linux/bitops.h>
-
-#include <linux/uaccess.h>
-#include <asm/processor.h> /* Processor type for cache alignment. */
-#include <asm/io.h>
-#include <linux/unaligned.h>
-#include <asm/cache.h>
-
-static const char version[] =
-KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Written by Donald Becker\n"
-" Some modifications by Eric kasten <kasten@nscl.msu.edu>\n"
-" Further modifications by Keith Underwood <keithu@parl.clemson.edu>\n";
-
-
-/* IP_MF appears to be only defined in <netinet/ip.h>, however,
- we need it for hardware checksumming support. FYI... some of
- the definitions in <netinet/ip.h> conflict/duplicate those in
- other linux headers causing many compiler warnings.
-*/
-#ifndef IP_MF
- #define IP_MF 0x2000 /* IP more frags from <netinet/ip.h> */
-#endif
-
-/* Define IP_OFFSET to be IPOPT_OFFSET */
-#ifndef IP_OFFSET
- #ifdef IPOPT_OFFSET
- #define IP_OFFSET IPOPT_OFFSET
- #else
- #define IP_OFFSET 2
- #endif
-#endif
-
-#define RUN_AT(x) (jiffies + (x))
-
-#ifndef ADDRLEN
-#define ADDRLEN 32
-#endif
-
-/* Condensed bus+endian portability operations. */
-#if ADDRLEN == 64
-#define cpu_to_leXX(addr) cpu_to_le64(addr)
-#define leXX_to_cpu(addr) le64_to_cpu(addr)
-#else
-#define cpu_to_leXX(addr) cpu_to_le32(addr)
-#define leXX_to_cpu(addr) le32_to_cpu(addr)
-#endif
-
-
-/*
- Theory of Operation
-
-I. Board Compatibility
-
-This device driver is designed for the Packet Engines "Hamachi"
-Gigabit Ethernet chip. The only PCA currently supported is the GNIC-II 64-bit
-66Mhz PCI card.
-
-II. Board-specific settings
-
-No jumpers exist on the board. The chip supports software correction of
-various motherboard wiring errors, however this driver does not support
-that feature.
-
-III. Driver operation
-
-IIIa. Ring buffers
-
-The Hamachi uses a typical descriptor based bus-master architecture.
-The descriptor list is similar to that used by the Digital Tulip.
-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.
-
-This driver uses a zero-copy receive and transmit scheme similar my other
-network drivers.
-The driver allocates full frame size skbuffs for the Rx ring buffers at
-open() time and passes the skb->data field to the Hamachi 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 and replaced by a newly allocated skbuff.
-
-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. Gigabit cards are typically used on 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.
-
-IIIb/c. Transmit/Receive Structure
-
-The Rx and Tx descriptor structure are straight-forward, with no historical
-baggage that must be explained. Unlike the awkward DBDMA structure, there
-are no unused fields or option bits that had only one allowable setting.
-
-Two details should be noted about the descriptors: The chip supports both 32
-bit and 64 bit address structures, and the length field is overwritten on
-the receive descriptors. The descriptor length is set in the control word
-for each channel. The development driver uses 32 bit addresses only, however
-64 bit addresses may be enabled for 64 bit architectures e.g. the Alpha.
-
-IIId. Synchronization
-
-This driver is very similar to my other network drivers.
-The driver runs as two independent, single-threaded flows of control. One
-is the send-packet routine, which enforces single-threaded use by the
-dev->tbusy flag. The other thread is the interrupt handler, which is single
-threaded by the hardware and other software.
-
-The send packet thread has partial control over the Tx ring and 'dev->tbusy'
-flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next
-queue slot is empty, it clears the tbusy flag when finished otherwise it sets
-the 'hmp->tx_full' flag.
-
-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. Iff the 'hmp->tx_full' flag is set, it
-clears both the tx_full and tbusy flags.
-
-IV. Notes
-
-Thanks to Kim Stearns of Packet Engines for providing a pair of GNIC-II boards.
-
-IVb. References
-
-Hamachi Engineering Design Specification, 5/15/97
-(Note: This version was marked "Confidential".)
-
-IVc. Errata
-
-None noted.
-
-V. Recent Changes
-
-01/15/1999 EPK Enlargement of the TX and RX ring sizes. This appears
- to help avoid some stall conditions -- this needs further research.
-
-01/15/1999 EPK Creation of the hamachi_tx function. This function cleans
- the Tx ring and is called from hamachi_start_xmit (this used to be
- called from hamachi_interrupt but it tends to delay execution of the
- interrupt handler and thus reduce bandwidth by reducing the latency
- between hamachi_rx()'s). Notably, some modification has been made so
- that the cleaning loop checks only to make sure that the DescOwn bit
- isn't set in the status flag since the card is not required
- to set the entire flag to zero after processing.
-
-01/15/1999 EPK In the hamachi_start_tx function, the Tx ring full flag is
- checked before attempting to add a buffer to the ring. If the ring is full
- an attempt is made to free any dirty buffers and thus find space for
- the new buffer or the function returns non-zero which should case the
- scheduler to reschedule the buffer later.
-
-01/15/1999 EPK Some adjustments were made to the chip initialization.
- End-to-end flow control should now be fully active and the interrupt
- algorithm vars have been changed. These could probably use further tuning.
-
-01/15/1999 EPK Added the max_{rx,tx}_latency options. These are used to
- set the rx and tx latencies for the Hamachi interrupts. If you're having
- problems with network stalls, try setting these to higher values.
- Valid values are 0x00 through 0xff.
-
-01/15/1999 EPK In general, the overall bandwidth has increased and
- latencies are better (sometimes by a factor of 2). Stalls are rare at
- this point, however there still appears to be a bug somewhere between the
- hardware and driver. TCP checksum errors under load also appear to be
- eliminated at this point.
-
-01/18/1999 EPK Ensured that the DescEndRing bit was being set on both the
- Rx and Tx rings. This appears to have been affecting whether a particular
- peer-to-peer connection would hang under high load. I believe the Rx
- rings was typically getting set correctly, but the Tx ring wasn't getting
- the DescEndRing bit set during initialization. ??? Does this mean the
- hamachi card is using the DescEndRing in processing even if a particular
- slot isn't in use -- hypothetically, the card might be searching the
- entire Tx ring for slots with the DescOwn bit set and then processing
- them. If the DescEndRing bit isn't set, then it might just wander off
- through memory until it hits a chunk of data with that bit set
- and then looping back.
-
-02/09/1999 EPK Added Michel Mueller's TxDMA Interrupt and Tx-timeout
- problem (TxCmd and RxCmd need only to be set when idle or stopped.
-
-02/09/1999 EPK Added code to check/reset dev->tbusy in hamachi_interrupt.
- (Michel Mueller pointed out the ``permanently busy'' potential
- problem here).
-
-02/22/1999 EPK Added Pete Wyckoff's ioctl to control the Tx/Rx latencies.
-
-02/23/1999 EPK Verified that the interrupt status field bits for Tx were
- incorrectly defined and corrected (as per Michel Mueller).
-
-02/23/1999 EPK Corrected the Tx full check to check that at least 4 slots
- were available before resetting the tbusy and tx_full flags
- (as per Michel Mueller).
-
-03/11/1999 EPK Added Pete Wyckoff's hardware checksumming support.
-
-12/31/1999 KDU Cleaned up assorted things and added Don's code to force
-32 bit.
-
-02/20/2000 KDU Some of the control was just plain odd. Cleaned up the
-hamachi_start_xmit() and hamachi_interrupt() code. There is still some
-re-structuring I would like to do.
-
-03/01/2000 KDU Experimenting with a WIDE range of interrupt mitigation
-parameters on a dual P3-450 setup yielded the new default interrupt
-mitigation parameters. Tx should interrupt VERY infrequently due to
-Eric's scheme. Rx should be more often...
-
-03/13/2000 KDU Added a patch to make the Rx Checksum code interact
-nicely with non-linux machines.
-
-03/13/2000 KDU Experimented with some of the configuration values:
-
- -It seems that enabling PCI performance commands for descriptors
- (changing RxDMACtrl and TxDMACtrl lower nibble from 5 to D) has minimal
- performance impact for any of my tests. (ttcp, netpipe, netperf) I will
- leave them that way until I hear further feedback.
-
- -Increasing the PCI_LATENCY_TIMER to 130
- (2 + (burst size of 128 * (0 wait states + 1))) seems to slightly
- degrade performance. Leaving default at 64 pending further information.
-
-03/14/2000 KDU Further tuning:
-
- -adjusted boguscnt in hamachi_rx() to depend on interrupt
- mitigation parameters chosen.
-
- -Selected a set of interrupt parameters based on some extensive testing.
- These may change with more testing.
-
-TO DO:
-
--Consider borrowing from the acenic driver code to check PCI_COMMAND for
-PCI_COMMAND_INVALIDATE. Set maximum burst size to cache line size in
-that case.
-
--fix the reset procedure. It doesn't quite work.
-*/
-
-/* A few values that may be tweaked. */
-/* Size of each temporary Rx buffer, calculated as:
- * 1518 bytes (ethernet packet) + 2 bytes (to get 8 byte alignment for
- * the card) + 8 bytes of status info + 8 bytes for the Rx Checksum
- */
-#define PKT_BUF_SZ 1536
-
-/* For now, this is going to be set to the maximum size of an ethernet
- * packet. Eventually, we may want to make it a variable that is
- * related to the MTU
- */
-#define MAX_FRAME_SIZE 1518
-
-/* The rest of these values should never change. */
-
-static void hamachi_timer(struct timer_list *t);
-
-enum capability_flags {CanHaveMII=1, };
-static const struct chip_info {
- u16 vendor_id, device_id, device_id_mask, pad;
- const char *name;
- void (*media_timer)(struct timer_list *t);
- int flags;
-} chip_tbl[] = {
- {0x1318, 0x0911, 0xffff, 0, "Hamachi GNIC-II", hamachi_timer, 0},
- {0,},
-};
-
-/* Offsets to the Hamachi registers. Various sizes. */
-enum hamachi_offsets {
- TxDMACtrl=0x00, TxCmd=0x04, TxStatus=0x06, TxPtr=0x08, TxCurPtr=0x10,
- RxDMACtrl=0x20, RxCmd=0x24, RxStatus=0x26, RxPtr=0x28, RxCurPtr=0x30,
- PCIClkMeas=0x060, MiscStatus=0x066, ChipRev=0x68, ChipReset=0x06B,
- LEDCtrl=0x06C, VirtualJumpers=0x06D, GPIO=0x6E,
- TxChecksum=0x074, RxChecksum=0x076,
- TxIntrCtrl=0x078, RxIntrCtrl=0x07C,
- InterruptEnable=0x080, InterruptClear=0x084, IntrStatus=0x088,
- EventStatus=0x08C,
- MACCnfg=0x0A0, FrameGap0=0x0A2, FrameGap1=0x0A4,
- /* See enum MII_offsets below. */
- MACCnfg2=0x0B0, RxDepth=0x0B8, FlowCtrl=0x0BC, MaxFrameSize=0x0CE,
- AddrMode=0x0D0, StationAddr=0x0D2,
- /* Gigabit AutoNegotiation. */
- ANCtrl=0x0E0, ANStatus=0x0E2, ANXchngCtrl=0x0E4, ANAdvertise=0x0E8,
- ANLinkPartnerAbility=0x0EA,
- EECmdStatus=0x0F0, EEData=0x0F1, EEAddr=0x0F2,
- FIFOcfg=0x0F8,
-};
-
-/* Offsets to the MII-mode registers. */
-enum MII_offsets {
- MII_Cmd=0xA6, MII_Addr=0xA8, MII_Wr_Data=0xAA, MII_Rd_Data=0xAC,
- MII_Status=0xAE,
-};
-
-/* Bits in the interrupt status/mask registers. */
-enum intr_status_bits {
- IntrRxDone=0x01, IntrRxPCIFault=0x02, IntrRxPCIErr=0x04,
- IntrTxDone=0x100, IntrTxPCIFault=0x200, IntrTxPCIErr=0x400,
- LinkChange=0x10000, NegotiationChange=0x20000, StatsMax=0x40000, };
-
-/* The Hamachi Rx and Tx buffer descriptors. */
-struct hamachi_desc {
- __le32 status_n_length;
-#if ADDRLEN == 64
- u32 pad;
- __le64 addr;
-#else
- __le32 addr;
-#endif
-};
-
-/* Bits in hamachi_desc.status_n_length */
-enum desc_status_bits {
- DescOwn=0x80000000, DescEndPacket=0x40000000, DescEndRing=0x20000000,
- DescIntr=0x10000000,
-};
-
-#define PRIV_ALIGN 15 /* Required alignment mask */
-#define MII_CNT 4
-struct hamachi_private {
- /* Descriptor rings first for alignment. Tx requires a second descriptor
- for status. */
- struct hamachi_desc *rx_ring;
- struct hamachi_desc *tx_ring;
- struct sk_buff* rx_skbuff[RX_RING_SIZE];
- struct sk_buff* tx_skbuff[TX_RING_SIZE];
- dma_addr_t tx_ring_dma;
- dma_addr_t rx_ring_dma;
- struct timer_list timer; /* Media selection timer. */
- /* Frequently used and paired value: keep adjacent for cache effect. */
- spinlock_t lock;
- int chip_id;
- 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. */
- unsigned int tx_full:1; /* The Tx queue is full. */
- unsigned int duplex_lock:1;
- unsigned int default_port:4; /* Last dev->if_port value. */
- /* MII transceiver section. */
- int mii_cnt; /* MII device addresses. */
- struct mii_if_info mii_if; /* MII lib hooks/info */
- unsigned char phys[MII_CNT]; /* MII device addresses, only first one used. */
- u32 rx_int_var, tx_int_var; /* interrupt control variables */
- u32 option; /* Hold on to a copy of the options */
- struct pci_dev *pci_dev;
- void __iomem *base;
-};
-
-MODULE_AUTHOR("Donald Becker <becker@scyld.com>, Eric Kasten <kasten@nscl.msu.edu>, Keith Underwood <keithu@parl.clemson.edu>");
-MODULE_DESCRIPTION("Packet Engines 'Hamachi' GNIC-II Gigabit Ethernet driver");
-MODULE_LICENSE("GPL");
-
-module_param(max_interrupt_work, int, 0);
-module_param(mtu, int, 0);
-module_param(debug, int, 0);
-module_param(min_rx_pkt, int, 0);
-module_param(max_rx_gap, int, 0);
-module_param(max_rx_latency, int, 0);
-module_param(min_tx_pkt, int, 0);
-module_param(max_tx_gap, int, 0);
-module_param(max_tx_latency, int, 0);
-module_param(rx_copybreak, int, 0);
-module_param_array(rx_params, int, NULL, 0);
-module_param_array(tx_params, int, NULL, 0);
-module_param_array(options, int, NULL, 0);
-module_param_array(full_duplex, int, NULL, 0);
-module_param(force32, int, 0);
-MODULE_PARM_DESC(max_interrupt_work, "GNIC-II maximum events handled per interrupt");
-MODULE_PARM_DESC(mtu, "GNIC-II MTU (all boards)");
-MODULE_PARM_DESC(debug, "GNIC-II debug level (0-7)");
-MODULE_PARM_DESC(min_rx_pkt, "GNIC-II minimum Rx packets processed between interrupts");
-MODULE_PARM_DESC(max_rx_gap, "GNIC-II maximum Rx inter-packet gap in 8.192 microsecond units");
-MODULE_PARM_DESC(max_rx_latency, "GNIC-II time between Rx interrupts in 8.192 microsecond units");
-MODULE_PARM_DESC(min_tx_pkt, "GNIC-II minimum Tx packets processed between interrupts");
-MODULE_PARM_DESC(max_tx_gap, "GNIC-II maximum Tx inter-packet gap in 8.192 microsecond units");
-MODULE_PARM_DESC(max_tx_latency, "GNIC-II time between Tx interrupts in 8.192 microsecond units");
-MODULE_PARM_DESC(rx_copybreak, "GNIC-II copy breakpoint for copy-only-tiny-frames");
-MODULE_PARM_DESC(rx_params, "GNIC-II min_rx_pkt+max_rx_gap+max_rx_latency");
-MODULE_PARM_DESC(tx_params, "GNIC-II min_tx_pkt+max_tx_gap+max_tx_latency");
-MODULE_PARM_DESC(options, "GNIC-II Bits 0-3: media type, bits 4-6: as force32, bit 7: half duplex, bit 9 full duplex");
-MODULE_PARM_DESC(full_duplex, "GNIC-II full duplex setting(s) (1)");
-MODULE_PARM_DESC(force32, "GNIC-II: Bit 0: 32 bit PCI, bit 1: disable parity, bit 2: 64 bit PCI (all boards)");
-
-static int read_eeprom(void __iomem *ioaddr, int location);
-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 hamachi_open(struct net_device *dev);
-static int hamachi_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
-static int hamachi_siocdevprivate(struct net_device *dev, struct ifreq *rq,
- void __user *data, int cmd);
-static void hamachi_timer(struct timer_list *t);
-static void hamachi_tx_timeout(struct net_device *dev, unsigned int txqueue);
-static void hamachi_init_ring(struct net_device *dev);
-static netdev_tx_t hamachi_start_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static irqreturn_t hamachi_interrupt(int irq, void *dev_instance);
-static int hamachi_rx(struct net_device *dev);
-static inline int hamachi_tx(struct net_device *dev);
-static void hamachi_error(struct net_device *dev, int intr_status);
-static int hamachi_close(struct net_device *dev);
-static struct net_device_stats *hamachi_get_stats(struct net_device *dev);
-static void set_rx_mode(struct net_device *dev);
-static const struct ethtool_ops ethtool_ops;
-static const struct ethtool_ops ethtool_ops_no_mii;
-
-static const struct net_device_ops hamachi_netdev_ops = {
- .ndo_open = hamachi_open,
- .ndo_stop = hamachi_close,
- .ndo_start_xmit = hamachi_start_xmit,
- .ndo_get_stats = hamachi_get_stats,
- .ndo_set_rx_mode = set_rx_mode,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_tx_timeout = hamachi_tx_timeout,
- .ndo_eth_ioctl = hamachi_ioctl,
- .ndo_siocdevprivate = hamachi_siocdevprivate,
-};
-
-
-static int hamachi_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct hamachi_private *hmp;
- int option, i, rx_int_var, tx_int_var, boguscnt;
- int chip_id = ent->driver_data;
- int irq;
- void __iomem *ioaddr;
- unsigned long base;
- static int card_idx;
- struct net_device *dev;
- void *ring_space;
- dma_addr_t ring_dma;
- int ret = -ENOMEM;
- u8 addr[ETH_ALEN];
-
-/* 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
-
- if (pci_enable_device(pdev)) {
- ret = -EIO;
- goto err_out;
- }
-
- base = pci_resource_start(pdev, 0);
-#ifdef __alpha__ /* Really "64 bit addrs" */
- base |= (pci_resource_start(pdev, 1) << 32);
-#endif
-
- pci_set_master(pdev);
-
- i = pci_request_regions(pdev, DRV_NAME);
- if (i)
- return i;
-
- irq = pdev->irq;
- ioaddr = ioremap(base, 0x400);
- if (!ioaddr)
- goto err_out_release;
-
- dev = alloc_etherdev(sizeof(struct hamachi_private));
- if (!dev)
- goto err_out_iounmap;
-
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- for (i = 0; i < 6; i++)
- addr[i] = read_eeprom(ioaddr, 4 + i);
- eth_hw_addr_set(dev, addr);
-
-#if ! defined(final_version)
- if (hamachi_debug > 4)
- for (i = 0; i < 0x10; i++)
- printk("%2.2x%s",
- read_eeprom(ioaddr, i), i % 16 != 15 ? " " : "\n");
-#endif
-
- hmp = netdev_priv(dev);
- spin_lock_init(&hmp->lock);
-
- hmp->mii_if.dev = dev;
- hmp->mii_if.mdio_read = mdio_read;
- hmp->mii_if.mdio_write = mdio_write;
- hmp->mii_if.phy_id_mask = 0x1f;
- hmp->mii_if.reg_num_mask = 0x1f;
-
- ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE, &ring_dma,
- GFP_KERNEL);
- if (!ring_space)
- goto err_out_cleardev;
- hmp->tx_ring = ring_space;
- hmp->tx_ring_dma = ring_dma;
-
- ring_space = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE, &ring_dma,
- GFP_KERNEL);
- if (!ring_space)
- goto err_out_unmap_tx;
- hmp->rx_ring = ring_space;
- hmp->rx_ring_dma = ring_dma;
-
- /* Check for options being passed in */
- option = card_idx < MAX_UNITS ? options[card_idx] : 0;
- if (dev->mem_start)
- option = dev->mem_start;
-
- /* If the bus size is misidentified, do the following. */
- force32 = force32 ? force32 :
- ((option >= 0) ? ((option & 0x00000070) >> 4) : 0 );
- if (force32)
- writeb(force32, ioaddr + VirtualJumpers);
-
- /* Hmmm, do we really need to reset the chip???. */
- writeb(0x01, ioaddr + ChipReset);
-
- /* After a reset, the clock speed measurement of the PCI bus will not
- * be valid for a moment. Wait for a little while until it is. If
- * it takes more than 10ms, forget it.
- */
- udelay(10);
- i = readb(ioaddr + PCIClkMeas);
- for (boguscnt = 0; (!(i & 0x080)) && boguscnt < 1000; boguscnt++){
- udelay(10);
- i = readb(ioaddr + PCIClkMeas);
- }
-
- hmp->base = ioaddr;
- pci_set_drvdata(pdev, dev);
-
- hmp->chip_id = chip_id;
- hmp->pci_dev = pdev;
-
- /* The lower four bits are the media type. */
- if (option > 0) {
- hmp->option = option;
- if (option & 0x200)
- hmp->mii_if.full_duplex = 1;
- else if (option & 0x080)
- hmp->mii_if.full_duplex = 0;
- hmp->default_port = option & 15;
- if (hmp->default_port)
- hmp->mii_if.force_media = 1;
- }
- if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0)
- hmp->mii_if.full_duplex = 1;
-
- /* lock the duplex mode if someone specified a value */
- if (hmp->mii_if.full_duplex || (option & 0x080))
- hmp->duplex_lock = 1;
-
- /* Set interrupt tuning parameters */
- max_rx_latency = max_rx_latency & 0x00ff;
- max_rx_gap = max_rx_gap & 0x00ff;
- min_rx_pkt = min_rx_pkt & 0x00ff;
- max_tx_latency = max_tx_latency & 0x00ff;
- max_tx_gap = max_tx_gap & 0x00ff;
- min_tx_pkt = min_tx_pkt & 0x00ff;
-
- rx_int_var = card_idx < MAX_UNITS ? rx_params[card_idx] : -1;
- tx_int_var = card_idx < MAX_UNITS ? tx_params[card_idx] : -1;
- hmp->rx_int_var = rx_int_var >= 0 ? rx_int_var :
- (min_rx_pkt << 16 | max_rx_gap << 8 | max_rx_latency);
- hmp->tx_int_var = tx_int_var >= 0 ? tx_int_var :
- (min_tx_pkt << 16 | max_tx_gap << 8 | max_tx_latency);
-
-
- /* The Hamachi-specific entries in the device structure. */
- dev->netdev_ops = &hamachi_netdev_ops;
- dev->ethtool_ops = (chip_tbl[hmp->chip_id].flags & CanHaveMII) ?
- ðtool_ops : ðtool_ops_no_mii;
- dev->watchdog_timeo = TX_TIMEOUT;
- if (mtu)
- dev->mtu = mtu;
-
- i = register_netdev(dev);
- if (i) {
- ret = i;
- goto err_out_unmap_rx;
- }
-
- printk(KERN_INFO "%s: %s type %x at %p, %pM, IRQ %d.\n",
- dev->name, chip_tbl[chip_id].name, readl(ioaddr + ChipRev),
- ioaddr, dev->dev_addr, irq);
- i = readb(ioaddr + PCIClkMeas);
- printk(KERN_INFO "%s: %d-bit %d Mhz PCI bus (%d), Virtual Jumpers "
- "%2.2x, LPA %4.4x.\n",
- dev->name, readw(ioaddr + MiscStatus) & 1 ? 64 : 32,
- i ? 2000/(i&0x7f) : 0, i&0x7f, (int)readb(ioaddr + VirtualJumpers),
- readw(ioaddr + ANLinkPartnerAbility));
-
- if (chip_tbl[hmp->chip_id].flags & CanHaveMII) {
- int phy, phy_idx = 0;
- for (phy = 0; phy < 32 && phy_idx < MII_CNT; phy++) {
- int mii_status = mdio_read(dev, phy, MII_BMSR);
- if (mii_status != 0xffff &&
- mii_status != 0x0000) {
- hmp->phys[phy_idx++] = phy;
- hmp->mii_if.advertising = mdio_read(dev, phy, MII_ADVERTISE);
- printk(KERN_INFO "%s: MII PHY found at address %d, status "
- "0x%4.4x advertising %4.4x.\n",
- dev->name, phy, mii_status, hmp->mii_if.advertising);
- }
- }
- hmp->mii_cnt = phy_idx;
- if (hmp->mii_cnt > 0)
- hmp->mii_if.phy_id = hmp->phys[0];
- else
- memset(&hmp->mii_if, 0, sizeof(hmp->mii_if));
- }
- /* Configure gigabit autonegotiation. */
- writew(0x0400, ioaddr + ANXchngCtrl); /* Enable legacy links. */
- writew(0x08e0, ioaddr + ANAdvertise); /* Set our advertise word. */
- writew(0x1000, ioaddr + ANCtrl); /* Enable negotiation */
-
- card_idx++;
- return 0;
-
-err_out_unmap_rx:
- dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, hmp->rx_ring,
- hmp->rx_ring_dma);
-err_out_unmap_tx:
- dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, hmp->tx_ring,
- hmp->tx_ring_dma);
-err_out_cleardev:
- free_netdev (dev);
-err_out_iounmap:
- iounmap(ioaddr);
-err_out_release:
- pci_release_regions(pdev);
-err_out:
- return ret;
-}
-
-static int read_eeprom(void __iomem *ioaddr, int location)
-{
- int bogus_cnt = 1000;
-
- /* We should check busy first - per docs -KDU */
- while ((readb(ioaddr + EECmdStatus) & 0x40) && --bogus_cnt > 0);
- writew(location, ioaddr + EEAddr);
- writeb(0x02, ioaddr + EECmdStatus);
- bogus_cnt = 1000;
- while ((readb(ioaddr + EECmdStatus) & 0x40) && --bogus_cnt > 0);
- if (hamachi_debug > 5)
- printk(" EEPROM status is %2.2x after %d ticks.\n",
- (int)readb(ioaddr + EECmdStatus), 1000- bogus_cnt);
- return readb(ioaddr + EEData);
-}
-
-/* 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(struct net_device *dev, int phy_id, int location)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- void __iomem *ioaddr = hmp->base;
- int i;
-
- /* We should check busy first - per docs -KDU */
- for (i = 10000; i >= 0; i--)
- if ((readw(ioaddr + MII_Status) & 1) == 0)
- break;
- writew((phy_id<<8) + location, ioaddr + MII_Addr);
- writew(0x0001, ioaddr + MII_Cmd);
- for (i = 10000; i >= 0; i--)
- if ((readw(ioaddr + MII_Status) & 1) == 0)
- break;
- return readw(ioaddr + MII_Rd_Data);
-}
-
-static void mdio_write(struct net_device *dev, int phy_id, int location, int value)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- void __iomem *ioaddr = hmp->base;
- int i;
-
- /* We should check busy first - per docs -KDU */
- for (i = 10000; i >= 0; i--)
- if ((readw(ioaddr + MII_Status) & 1) == 0)
- break;
- writew((phy_id<<8) + location, ioaddr + MII_Addr);
- writew(value, ioaddr + MII_Wr_Data);
-
- /* Wait for the command to finish. */
- for (i = 10000; i >= 0; i--)
- if ((readw(ioaddr + MII_Status) & 1) == 0)
- break;
-}
-
-
-static int hamachi_open(struct net_device *dev)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- void __iomem *ioaddr = hmp->base;
- int i;
- u32 rx_int_var, tx_int_var;
- u16 fifo_info;
-
- i = request_irq(hmp->pci_dev->irq, hamachi_interrupt, IRQF_SHARED,
- dev->name, dev);
- if (i)
- return i;
-
- hamachi_init_ring(dev);
-
-#if ADDRLEN == 64
- /* writellll anyone ? */
- writel(hmp->rx_ring_dma, ioaddr + RxPtr);
- writel(hmp->rx_ring_dma >> 32, ioaddr + RxPtr + 4);
- writel(hmp->tx_ring_dma, ioaddr + TxPtr);
- writel(hmp->tx_ring_dma >> 32, ioaddr + TxPtr + 4);
-#else
- writel(hmp->rx_ring_dma, ioaddr + RxPtr);
- writel(hmp->tx_ring_dma, ioaddr + TxPtr);
-#endif
-
- /* TODO: It would make sense to organize this as words since the card
- * documentation does. -KDU
- */
- for (i = 0; i < 6; i++)
- writeb(dev->dev_addr[i], ioaddr + StationAddr + i);
-
- /* Initialize other registers: with so many this eventually this will
- converted to an offset/value list. */
-
- /* Configure the FIFO */
- fifo_info = (readw(ioaddr + GPIO) & 0x00C0) >> 6;
- switch (fifo_info){
- case 0 :
- /* No FIFO */
- writew(0x0000, ioaddr + FIFOcfg);
- break;
- case 1 :
- /* Configure the FIFO for 512K external, 16K used for Tx. */
- writew(0x0028, ioaddr + FIFOcfg);
- break;
- case 2 :
- /* Configure the FIFO for 1024 external, 32K used for Tx. */
- writew(0x004C, ioaddr + FIFOcfg);
- break;
- case 3 :
- /* Configure the FIFO for 2048 external, 32K used for Tx. */
- writew(0x006C, ioaddr + FIFOcfg);
- break;
- default :
- printk(KERN_WARNING "%s: Unsupported external memory config!\n",
- dev->name);
- /* Default to no FIFO */
- writew(0x0000, ioaddr + FIFOcfg);
- break;
- }
-
- if (dev->if_port == 0)
- dev->if_port = hmp->default_port;
-
-
- /* Setting the Rx mode will start the Rx process. */
- /* If someone didn't choose a duplex, default to full-duplex */
- if (hmp->duplex_lock != 1)
- hmp->mii_if.full_duplex = 1;
-
- /* always 1, takes no more time to do it */
- writew(0x0001, ioaddr + RxChecksum);
- writew(0x0000, ioaddr + TxChecksum);
- writew(0x8000, ioaddr + MACCnfg); /* Soft reset the MAC */
- writew(0x215F, ioaddr + MACCnfg);
- writew(0x000C, ioaddr + FrameGap0);
- /* WHAT?!?!? Why isn't this documented somewhere? -KDU */
- writew(0x1018, ioaddr + FrameGap1);
- /* Why do we enable receives/transmits here? -KDU */
- writew(0x0780, ioaddr + MACCnfg2); /* Upper 16 bits control LEDs. */
- /* Enable automatic generation of flow control frames, period 0xffff. */
- writel(0x0030FFFF, ioaddr + FlowCtrl);
- writew(MAX_FRAME_SIZE, ioaddr + MaxFrameSize); /* dev->mtu+14 ??? */
-
- /* Enable legacy links. */
- writew(0x0400, ioaddr + ANXchngCtrl); /* Enable legacy links. */
- /* Initial Link LED to blinking red. */
- writeb(0x03, ioaddr + LEDCtrl);
-
- /* Configure interrupt mitigation. This has a great effect on
- performance, so systems tuning should start here!. */
-
- rx_int_var = hmp->rx_int_var;
- tx_int_var = hmp->tx_int_var;
-
- if (hamachi_debug > 1) {
- printk("max_tx_latency: %d, max_tx_gap: %d, min_tx_pkt: %d\n",
- tx_int_var & 0x00ff, (tx_int_var & 0x00ff00) >> 8,
- (tx_int_var & 0x00ff0000) >> 16);
- printk("max_rx_latency: %d, max_rx_gap: %d, min_rx_pkt: %d\n",
- rx_int_var & 0x00ff, (rx_int_var & 0x00ff00) >> 8,
- (rx_int_var & 0x00ff0000) >> 16);
- printk("rx_int_var: %x, tx_int_var: %x\n", rx_int_var, tx_int_var);
- }
-
- writel(tx_int_var, ioaddr + TxIntrCtrl);
- writel(rx_int_var, ioaddr + RxIntrCtrl);
-
- set_rx_mode(dev);
-
- netif_start_queue(dev);
-
- /* Enable interrupts by setting the interrupt mask. */
- writel(0x80878787, ioaddr + InterruptEnable);
- writew(0x0000, ioaddr + EventStatus); /* Clear non-interrupting events */
-
- /* Configure and start the DMA channels. */
- /* Burst sizes are in the low three bits: size = 4<<(val&7) */
-#if ADDRLEN == 64
- writew(0x005D, ioaddr + RxDMACtrl); /* 128 dword bursts */
- writew(0x005D, ioaddr + TxDMACtrl);
-#else
- writew(0x001D, ioaddr + RxDMACtrl);
- writew(0x001D, ioaddr + TxDMACtrl);
-#endif
- writew(0x0001, ioaddr + RxCmd);
-
- if (hamachi_debug > 2) {
- printk(KERN_DEBUG "%s: Done hamachi_open(), status: Rx %x Tx %x.\n",
- dev->name, readw(ioaddr + RxStatus), readw(ioaddr + TxStatus));
- }
- /* Set the timer to check for link beat. */
- timer_setup(&hmp->timer, hamachi_timer, 0);
- hmp->timer.expires = RUN_AT((24*HZ)/10); /* 2.4 sec. */
- add_timer(&hmp->timer);
-
- return 0;
-}
-
-static inline int hamachi_tx(struct net_device *dev)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
-
- /* Update the dirty pointer until we find an entry that is
- still owned by the card */
- for (; hmp->cur_tx - hmp->dirty_tx > 0; hmp->dirty_tx++) {
- int entry = hmp->dirty_tx % TX_RING_SIZE;
- struct sk_buff *skb;
-
- if (hmp->tx_ring[entry].status_n_length & cpu_to_le32(DescOwn))
- break;
- /* Free the original skb. */
- skb = hmp->tx_skbuff[entry];
- if (skb) {
- dma_unmap_single(&hmp->pci_dev->dev,
- leXX_to_cpu(hmp->tx_ring[entry].addr),
- skb->len, DMA_TO_DEVICE);
- dev_kfree_skb(skb);
- hmp->tx_skbuff[entry] = NULL;
- }
- hmp->tx_ring[entry].status_n_length = 0;
- if (entry >= TX_RING_SIZE-1)
- hmp->tx_ring[TX_RING_SIZE-1].status_n_length |=
- cpu_to_le32(DescEndRing);
- dev->stats.tx_packets++;
- }
-
- return 0;
-}
-
-static void hamachi_timer(struct timer_list *t)
-{
- struct hamachi_private *hmp = timer_container_of(hmp, t, timer);
- struct net_device *dev = hmp->mii_if.dev;
- void __iomem *ioaddr = hmp->base;
- int next_tick = 10*HZ;
-
- if (hamachi_debug > 2) {
- printk(KERN_INFO "%s: Hamachi Autonegotiation status %4.4x, LPA "
- "%4.4x.\n", dev->name, readw(ioaddr + ANStatus),
- readw(ioaddr + ANLinkPartnerAbility));
- printk(KERN_INFO "%s: Autonegotiation regs %4.4x %4.4x %4.4x "
- "%4.4x %4.4x %4.4x.\n", dev->name,
- readw(ioaddr + 0x0e0),
- readw(ioaddr + 0x0e2),
- readw(ioaddr + 0x0e4),
- readw(ioaddr + 0x0e6),
- readw(ioaddr + 0x0e8),
- readw(ioaddr + 0x0eA));
- }
- /* We could do something here... nah. */
- hmp->timer.expires = RUN_AT(next_tick);
- add_timer(&hmp->timer);
-}
-
-static void hamachi_tx_timeout(struct net_device *dev, unsigned int txqueue)
-{
- int i;
- struct hamachi_private *hmp = netdev_priv(dev);
- void __iomem *ioaddr = hmp->base;
-
- printk(KERN_WARNING "%s: Hamachi transmit timed out, status %8.8x,"
- " resetting...\n", dev->name, (int)readw(ioaddr + TxStatus));
-
- {
- printk(KERN_DEBUG " Rx ring %p: ", hmp->rx_ring);
- for (i = 0; i < RX_RING_SIZE; i++)
- printk(KERN_CONT " %8.8x",
- le32_to_cpu(hmp->rx_ring[i].status_n_length));
- printk(KERN_CONT "\n");
- printk(KERN_DEBUG" Tx ring %p: ", hmp->tx_ring);
- for (i = 0; i < TX_RING_SIZE; i++)
- printk(KERN_CONT " %4.4x",
- le32_to_cpu(hmp->tx_ring[i].status_n_length));
- printk(KERN_CONT "\n");
- }
-
- /* Reinit the hardware and make sure the Rx and Tx processes
- are up and running.
- */
- dev->if_port = 0;
- /* The right way to do Reset. -KDU
- * -Clear OWN bit in all Rx/Tx descriptors
- * -Wait 50 uS for channels to go idle
- * -Turn off MAC receiver
- * -Issue Reset
- */
-
- for (i = 0; i < RX_RING_SIZE; i++)
- hmp->rx_ring[i].status_n_length &= cpu_to_le32(~DescOwn);
-
- /* Presume that all packets in the Tx queue are gone if we have to
- * re-init the hardware.
- */
- for (i = 0; i < TX_RING_SIZE; i++){
- struct sk_buff *skb;
-
- if (i >= TX_RING_SIZE - 1)
- hmp->tx_ring[i].status_n_length =
- cpu_to_le32(DescEndRing) |
- (hmp->tx_ring[i].status_n_length &
- cpu_to_le32(0x0000ffff));
- else
- hmp->tx_ring[i].status_n_length &= cpu_to_le32(0x0000ffff);
- skb = hmp->tx_skbuff[i];
- if (skb){
- dma_unmap_single(&hmp->pci_dev->dev,
- leXX_to_cpu(hmp->tx_ring[i].addr),
- skb->len, DMA_TO_DEVICE);
- dev_kfree_skb(skb);
- hmp->tx_skbuff[i] = NULL;
- }
- }
-
- udelay(60); /* Sleep 60 us just for safety sake */
- writew(0x0002, ioaddr + RxCmd); /* STOP Rx */
-
- writeb(0x01, ioaddr + ChipReset); /* Reinit the hardware */
-
- hmp->tx_full = 0;
- hmp->cur_rx = hmp->cur_tx = 0;
- hmp->dirty_rx = hmp->dirty_tx = 0;
- /* Rx packets are also presumed lost; however, we need to make sure a
- * ring of buffers is in tact. -KDU
- */
- for (i = 0; i < RX_RING_SIZE; i++){
- struct sk_buff *skb = hmp->rx_skbuff[i];
-
- if (skb){
- dma_unmap_single(&hmp->pci_dev->dev,
- leXX_to_cpu(hmp->rx_ring[i].addr),
- hmp->rx_buf_sz, DMA_FROM_DEVICE);
- dev_kfree_skb(skb);
- hmp->rx_skbuff[i] = NULL;
- }
- }
- /* Fill in the Rx buffers. Handle allocation failure gracefully. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- struct sk_buff *skb;
-
- skb = netdev_alloc_skb_ip_align(dev, hmp->rx_buf_sz);
- hmp->rx_skbuff[i] = skb;
- if (skb == NULL)
- break;
-
- hmp->rx_ring[i].addr = cpu_to_leXX(dma_map_single(&hmp->pci_dev->dev,
- skb->data,
- hmp->rx_buf_sz,
- DMA_FROM_DEVICE));
- hmp->rx_ring[i].status_n_length = cpu_to_le32(DescOwn |
- DescEndPacket | DescIntr | (hmp->rx_buf_sz - 2));
- }
- hmp->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
- /* Mark the last entry as wrapping the ring. */
- hmp->rx_ring[RX_RING_SIZE-1].status_n_length |= cpu_to_le32(DescEndRing);
-
- /* Trigger an immediate transmit demand. */
- netif_trans_update(dev); /* prevent tx timeout */
- dev->stats.tx_errors++;
-
- /* Restart the chip's Tx/Rx processes . */
- writew(0x0002, ioaddr + TxCmd); /* STOP Tx */
- writew(0x0001, ioaddr + TxCmd); /* START Tx */
- writew(0x0001, ioaddr + RxCmd); /* START Rx */
-
- netif_wake_queue(dev);
-}
-
-
-/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
-static void hamachi_init_ring(struct net_device *dev)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- int i;
-
- hmp->tx_full = 0;
- hmp->cur_rx = hmp->cur_tx = 0;
- hmp->dirty_rx = hmp->dirty_tx = 0;
-
- /* +26 gets the maximum ethernet encapsulation, +7 & ~7 because the
- * card needs room to do 8 byte alignment, +2 so we can reserve
- * the first 2 bytes, and +16 gets room for the status word from the
- * card. -KDU
- */
- hmp->rx_buf_sz = (dev->mtu <= 1492 ? PKT_BUF_SZ :
- (((dev->mtu+26+7) & ~7) + 16));
-
- /* Initialize all Rx descriptors. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- hmp->rx_ring[i].status_n_length = 0;
- hmp->rx_skbuff[i] = NULL;
- }
- /* Fill in the Rx buffers. Handle allocation failure gracefully. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- struct sk_buff *skb = netdev_alloc_skb(dev, hmp->rx_buf_sz + 2);
- hmp->rx_skbuff[i] = skb;
- if (skb == NULL)
- break;
- skb_reserve(skb, 2); /* 16 byte align the IP header. */
- hmp->rx_ring[i].addr = cpu_to_leXX(dma_map_single(&hmp->pci_dev->dev,
- skb->data,
- hmp->rx_buf_sz,
- DMA_FROM_DEVICE));
- /* -2 because it doesn't REALLY have that first 2 bytes -KDU */
- hmp->rx_ring[i].status_n_length = cpu_to_le32(DescOwn |
- DescEndPacket | DescIntr | (hmp->rx_buf_sz -2));
- }
- hmp->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
- hmp->rx_ring[RX_RING_SIZE-1].status_n_length |= cpu_to_le32(DescEndRing);
-
- for (i = 0; i < TX_RING_SIZE; i++) {
- hmp->tx_skbuff[i] = NULL;
- hmp->tx_ring[i].status_n_length = 0;
- }
- /* Mark the last entry of the ring */
- hmp->tx_ring[TX_RING_SIZE-1].status_n_length |= cpu_to_le32(DescEndRing);
-}
-
-
-static netdev_tx_t hamachi_start_xmit(struct sk_buff *skb,
- struct net_device *dev)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- unsigned entry;
- u16 status;
-
- /* Ok, now make sure that the queue has space before trying to
- add another skbuff. if we return non-zero the scheduler
- should interpret this as a queue full and requeue the buffer
- for later.
- */
- if (hmp->tx_full) {
- /* We should NEVER reach this point -KDU */
- printk(KERN_WARNING "%s: Hamachi transmit queue full at slot %d.\n",dev->name, hmp->cur_tx);
-
- /* Wake the potentially-idle transmit channel. */
- /* If we don't need to read status, DON'T -KDU */
- status=readw(hmp->base + TxStatus);
- if( !(status & 0x0001) || (status & 0x0002))
- writew(0x0001, hmp->base + TxCmd);
- return NETDEV_TX_BUSY;
- }
-
- /* Caution: the write order is important here, set the field
- with the "ownership" bits last. */
-
- /* Calculate the next Tx descriptor entry. */
- entry = hmp->cur_tx % TX_RING_SIZE;
-
- hmp->tx_skbuff[entry] = skb;
-
- hmp->tx_ring[entry].addr = cpu_to_leXX(dma_map_single(&hmp->pci_dev->dev,
- skb->data,
- skb->len,
- DMA_TO_DEVICE));
-
- /* Hmmmm, could probably put a DescIntr on these, but the way
- the driver is currently coded makes Tx interrupts unnecessary
- since the clearing of the Tx ring is handled by the start_xmit
- routine. This organization helps mitigate the interrupts a
- bit and probably renders the max_tx_latency param useless.
-
- Update: Putting a DescIntr bit on all of the descriptors and
- mitigating interrupt frequency with the tx_min_pkt parameter. -KDU
- */
- if (entry >= TX_RING_SIZE-1) /* Wrap ring */
- hmp->tx_ring[entry].status_n_length = cpu_to_le32(DescOwn |
- DescEndPacket | DescEndRing | DescIntr | skb->len);
- else
- hmp->tx_ring[entry].status_n_length = cpu_to_le32(DescOwn |
- DescEndPacket | DescIntr | skb->len);
- hmp->cur_tx++;
-
- /* Non-x86 Todo: explicitly flush cache lines here. */
-
- /* Wake the potentially-idle transmit channel. */
- /* If we don't need to read status, DON'T -KDU */
- status=readw(hmp->base + TxStatus);
- if( !(status & 0x0001) || (status & 0x0002))
- writew(0x0001, hmp->base + TxCmd);
-
- /* Immediately before returning, let's clear as many entries as we can. */
- hamachi_tx(dev);
-
- /* We should kick the bottom half here, since we are not accepting
- * interrupts with every packet. i.e. realize that Gigabit ethernet
- * can transmit faster than ordinary machines can load packets;
- * hence, any packet that got put off because we were in the transmit
- * routine should IMMEDIATELY get a chance to be re-queued. -KDU
- */
- if ((hmp->cur_tx - hmp->dirty_tx) < (TX_RING_SIZE - 4))
- netif_wake_queue(dev); /* Typical path */
- else {
- hmp->tx_full = 1;
- netif_stop_queue(dev);
- }
-
- if (hamachi_debug > 4) {
- printk(KERN_DEBUG "%s: Hamachi transmit frame #%d queued in slot %d.\n",
- dev->name, hmp->cur_tx, entry);
- }
- return NETDEV_TX_OK;
-}
-
-/* The interrupt handler does all of the Rx thread work and cleans up
- after the Tx thread. */
-static irqreturn_t hamachi_interrupt(int irq, void *dev_instance)
-{
- struct net_device *dev = dev_instance;
- struct hamachi_private *hmp = netdev_priv(dev);
- void __iomem *ioaddr = hmp->base;
- long boguscnt = max_interrupt_work;
- int handled = 0;
-
-#ifndef final_version /* Can never occur. */
- if (dev == NULL) {
- printk (KERN_ERR "hamachi_interrupt(): irq %d for unknown device.\n", irq);
- return IRQ_NONE;
- }
-#endif
-
- spin_lock(&hmp->lock);
-
- do {
- u32 intr_status = readl(ioaddr + InterruptClear);
-
- if (hamachi_debug > 4)
- printk(KERN_DEBUG "%s: Hamachi interrupt, status %4.4x.\n",
- dev->name, intr_status);
-
- if (intr_status == 0)
- break;
-
- handled = 1;
-
- if (intr_status & IntrRxDone)
- hamachi_rx(dev);
-
- if (intr_status & IntrTxDone){
- /* This code should RARELY need to execute. After all, this is
- * a gigabit link, it should consume packets as fast as we put
- * them in AND we clear the Tx ring in hamachi_start_xmit().
- */
- if (hmp->tx_full){
- for (; hmp->cur_tx - hmp->dirty_tx > 0; hmp->dirty_tx++){
- int entry = hmp->dirty_tx % TX_RING_SIZE;
- struct sk_buff *skb;
-
- if (hmp->tx_ring[entry].status_n_length & cpu_to_le32(DescOwn))
- break;
- skb = hmp->tx_skbuff[entry];
- /* Free the original skb. */
- if (skb){
- dma_unmap_single(&hmp->pci_dev->dev,
- leXX_to_cpu(hmp->tx_ring[entry].addr),
- skb->len,
- DMA_TO_DEVICE);
- dev_consume_skb_irq(skb);
- hmp->tx_skbuff[entry] = NULL;
- }
- hmp->tx_ring[entry].status_n_length = 0;
- if (entry >= TX_RING_SIZE-1)
- hmp->tx_ring[TX_RING_SIZE-1].status_n_length |=
- cpu_to_le32(DescEndRing);
- dev->stats.tx_packets++;
- }
- if (hmp->cur_tx - hmp->dirty_tx < TX_RING_SIZE - 4){
- /* The ring is no longer full */
- hmp->tx_full = 0;
- netif_wake_queue(dev);
- }
- } else {
- netif_wake_queue(dev);
- }
- }
-
-
- /* Abnormal error summary/uncommon events handlers. */
- if (intr_status &
- (IntrTxPCIFault | IntrTxPCIErr | IntrRxPCIFault | IntrRxPCIErr |
- LinkChange | NegotiationChange | StatsMax))
- hamachi_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 (hamachi_debug > 3)
- printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
- dev->name, readl(ioaddr + IntrStatus));
-
-#ifndef final_version
- /* Code that should never be run! Perhaps remove after testing.. */
- {
- static int stopit = 10;
- if (dev->start == 0 && --stopit < 0) {
- printk(KERN_ERR "%s: Emergency stop, looping startup interrupt.\n",
- dev->name);
- free_irq(irq, dev);
- }
- }
-#endif
-
- spin_unlock(&hmp->lock);
- return IRQ_RETVAL(handled);
-}
-
-/* This routine is logically part of the interrupt handler, but separated
- for clarity and better register allocation. */
-static int hamachi_rx(struct net_device *dev)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- int entry = hmp->cur_rx % RX_RING_SIZE;
- int boguscnt = (hmp->dirty_rx + RX_RING_SIZE) - hmp->cur_rx;
-
- if (hamachi_debug > 4) {
- printk(KERN_DEBUG " In hamachi_rx(), entry %d status %4.4x.\n",
- entry, hmp->rx_ring[entry].status_n_length);
- }
-
- /* If EOP is set on the next entry, it's a new packet. Send it up. */
- while (1) {
- struct hamachi_desc *desc = &(hmp->rx_ring[entry]);
- u32 desc_status = le32_to_cpu(desc->status_n_length);
- u16 data_size = desc_status; /* Implicit truncate */
- u8 *buf_addr;
- s32 frame_status;
-
- if (desc_status & DescOwn)
- break;
- dma_sync_single_for_cpu(&hmp->pci_dev->dev,
- leXX_to_cpu(desc->addr),
- hmp->rx_buf_sz, DMA_FROM_DEVICE);
- buf_addr = (u8 *) hmp->rx_skbuff[entry]->data;
- frame_status = get_unaligned_le32(&(buf_addr[data_size - 12]));
- if (hamachi_debug > 4)
- printk(KERN_DEBUG " hamachi_rx() status was %8.8x.\n",
- frame_status);
- if (--boguscnt < 0)
- break;
- if ( ! (desc_status & DescEndPacket)) {
- printk(KERN_WARNING "%s: Oversized Ethernet frame spanned "
- "multiple buffers, entry %#x length %d status %4.4x!\n",
- dev->name, hmp->cur_rx, data_size, desc_status);
- printk(KERN_WARNING "%s: Oversized Ethernet frame %p vs %p.\n",
- dev->name, desc, &hmp->rx_ring[hmp->cur_rx % RX_RING_SIZE]);
- printk(KERN_WARNING "%s: Oversized Ethernet frame -- next status %x/%x last status %x.\n",
- dev->name,
- le32_to_cpu(hmp->rx_ring[(hmp->cur_rx+1) % RX_RING_SIZE].status_n_length) & 0xffff0000,
- le32_to_cpu(hmp->rx_ring[(hmp->cur_rx+1) % RX_RING_SIZE].status_n_length) & 0x0000ffff,
- le32_to_cpu(hmp->rx_ring[(hmp->cur_rx-1) % RX_RING_SIZE].status_n_length));
- dev->stats.rx_length_errors++;
- } /* else Omit for prototype errata??? */
- if (frame_status & 0x00380000) {
- /* There was an error. */
- if (hamachi_debug > 2)
- printk(KERN_DEBUG " hamachi_rx() Rx error was %8.8x.\n",
- frame_status);
- dev->stats.rx_errors++;
- if (frame_status & 0x00600000)
- dev->stats.rx_length_errors++;
- if (frame_status & 0x00080000)
- dev->stats.rx_frame_errors++;
- if (frame_status & 0x00100000)
- dev->stats.rx_crc_errors++;
- if (frame_status < 0)
- dev->stats.rx_dropped++;
- } else {
- struct sk_buff *skb;
- /* Omit CRC */
- u16 pkt_len = (frame_status & 0x07ff) - 4;
-#ifdef RX_CHECKSUM
- u32 pfck = *(u32 *) &buf_addr[data_size - 8];
-#endif
-
-
-#ifndef final_version
- if (hamachi_debug > 4)
- printk(KERN_DEBUG " hamachi_rx() normal Rx pkt length %d"
- " of %d, bogus_cnt %d.\n",
- pkt_len, data_size, boguscnt);
- if (hamachi_debug > 5)
- printk(KERN_DEBUG"%s: rx status %8.8x %8.8x %8.8x %8.8x %8.8x.\n",
- dev->name,
- *(s32*)&(buf_addr[data_size - 20]),
- *(s32*)&(buf_addr[data_size - 16]),
- *(s32*)&(buf_addr[data_size - 12]),
- *(s32*)&(buf_addr[data_size - 8]),
- *(s32*)&(buf_addr[data_size - 4]));
-#endif
- /* Check if the packet is long enough to accept without copying
- to a minimally-sized skbuff. */
- if (pkt_len < rx_copybreak &&
- (skb = netdev_alloc_skb(dev, pkt_len + 2)) != NULL) {
-#ifdef RX_CHECKSUM
- printk(KERN_ERR "%s: rx_copybreak non-zero "
- "not good with RX_CHECKSUM\n", dev->name);
-#endif
- skb_reserve(skb, 2); /* 16 byte align the IP header */
- dma_sync_single_for_cpu(&hmp->pci_dev->dev,
- leXX_to_cpu(hmp->rx_ring[entry].addr),
- hmp->rx_buf_sz,
- DMA_FROM_DEVICE);
- /* Call copy + cksum if available. */
-#if 1 || USE_IP_COPYSUM
- skb_copy_to_linear_data(skb,
- hmp->rx_skbuff[entry]->data, pkt_len);
- skb_put(skb, pkt_len);
-#else
- skb_put_data(skb, hmp->rx_ring_dma
- + entry*sizeof(*desc), pkt_len);
-#endif
- dma_sync_single_for_device(&hmp->pci_dev->dev,
- leXX_to_cpu(hmp->rx_ring[entry].addr),
- hmp->rx_buf_sz,
- DMA_FROM_DEVICE);
- } else {
- dma_unmap_single(&hmp->pci_dev->dev,
- leXX_to_cpu(hmp->rx_ring[entry].addr),
- hmp->rx_buf_sz,
- DMA_FROM_DEVICE);
- skb_put(skb = hmp->rx_skbuff[entry], pkt_len);
- hmp->rx_skbuff[entry] = NULL;
- }
- skb->protocol = eth_type_trans(skb, dev);
-
-
-#ifdef RX_CHECKSUM
- /* TCP or UDP on ipv4, DIX encoding */
- if (pfck>>24 == 0x91 || pfck>>24 == 0x51) {
- struct iphdr *ih = (struct iphdr *) skb->data;
- /* Check that IP packet is at least 46 bytes, otherwise,
- * there may be pad bytes included in the hardware checksum.
- * This wouldn't happen if everyone padded with 0.
- */
- if (ntohs(ih->tot_len) >= 46){
- /* don't worry about frags */
- if (!(ih->frag_off & cpu_to_be16(IP_MF|IP_OFFSET))) {
- u32 inv = *(u32 *) &buf_addr[data_size - 16];
- u32 *p = (u32 *) &buf_addr[data_size - 20];
- register u32 crc, p_r, p_r1;
-
- if (inv & 4) {
- inv &= ~4;
- --p;
- }
- p_r = *p;
- p_r1 = *(p-1);
- switch (inv) {
- case 0:
- crc = (p_r & 0xffff) + (p_r >> 16);
- break;
- case 1:
- crc = (p_r >> 16) + (p_r & 0xffff)
- + (p_r1 >> 16 & 0xff00);
- break;
- case 2:
- crc = p_r + (p_r1 >> 16);
- break;
- case 3:
- crc = p_r + (p_r1 & 0xff00) + (p_r1 >> 16);
- break;
- default: /*NOTREACHED*/ crc = 0;
- }
- if (crc & 0xffff0000) {
- crc &= 0xffff;
- ++crc;
- }
- /* tcp/udp will add in pseudo */
- skb->csum = ntohs(pfck & 0xffff);
- if (skb->csum > crc)
- skb->csum -= crc;
- else
- skb->csum += (~crc & 0xffff);
- /*
- * could do the pseudo myself and return
- * CHECKSUM_UNNECESSARY
- */
- skb->ip_summed = CHECKSUM_COMPLETE;
- }
- }
- }
-#endif /* RX_CHECKSUM */
-
- netif_rx(skb);
- dev->stats.rx_packets++;
- }
- entry = (++hmp->cur_rx) % RX_RING_SIZE;
- }
-
- /* Refill the Rx ring buffers. */
- for (; hmp->cur_rx - hmp->dirty_rx > 0; hmp->dirty_rx++) {
- struct hamachi_desc *desc;
-
- entry = hmp->dirty_rx % RX_RING_SIZE;
- desc = &(hmp->rx_ring[entry]);
- if (hmp->rx_skbuff[entry] == NULL) {
- struct sk_buff *skb = netdev_alloc_skb(dev, hmp->rx_buf_sz + 2);
-
- hmp->rx_skbuff[entry] = skb;
- if (skb == NULL)
- break; /* Better luck next round. */
- skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
- desc->addr = cpu_to_leXX(dma_map_single(&hmp->pci_dev->dev,
- skb->data,
- hmp->rx_buf_sz,
- DMA_FROM_DEVICE));
- }
- desc->status_n_length = cpu_to_le32(hmp->rx_buf_sz);
- if (entry >= RX_RING_SIZE-1)
- desc->status_n_length |= cpu_to_le32(DescOwn |
- DescEndPacket | DescEndRing | DescIntr);
- else
- desc->status_n_length |= cpu_to_le32(DescOwn |
- DescEndPacket | DescIntr);
- }
-
- /* Restart Rx engine if stopped. */
- /* If we don't need to check status, don't. -KDU */
- if (readw(hmp->base + RxStatus) & 0x0002)
- writew(0x0001, hmp->base + RxCmd);
-
- return 0;
-}
-
-/* This is more properly named "uncommon interrupt events", as it covers more
- than just errors. */
-static void hamachi_error(struct net_device *dev, int intr_status)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- void __iomem *ioaddr = hmp->base;
-
- if (intr_status & (LinkChange|NegotiationChange)) {
- if (hamachi_debug > 1)
- printk(KERN_INFO "%s: Link changed: AutoNegotiation Ctrl"
- " %4.4x, Status %4.4x %4.4x Intr status %4.4x.\n",
- dev->name, readw(ioaddr + 0x0E0), readw(ioaddr + 0x0E2),
- readw(ioaddr + ANLinkPartnerAbility),
- readl(ioaddr + IntrStatus));
- if (readw(ioaddr + ANStatus) & 0x20)
- writeb(0x01, ioaddr + LEDCtrl);
- else
- writeb(0x03, ioaddr + LEDCtrl);
- }
- if (intr_status & StatsMax) {
- hamachi_get_stats(dev);
- /* Read the overflow bits to clear. */
- readl(ioaddr + 0x370);
- readl(ioaddr + 0x3F0);
- }
- if ((intr_status & ~(LinkChange|StatsMax|NegotiationChange|IntrRxDone|IntrTxDone)) &&
- hamachi_debug)
- printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n",
- dev->name, intr_status);
- /* Hmmmmm, it's not clear how to recover from PCI faults. */
- if (intr_status & (IntrTxPCIErr | IntrTxPCIFault))
- dev->stats.tx_fifo_errors++;
- if (intr_status & (IntrRxPCIErr | IntrRxPCIFault))
- dev->stats.rx_fifo_errors++;
-}
-
-static int hamachi_close(struct net_device *dev)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- void __iomem *ioaddr = hmp->base;
- struct sk_buff *skb;
- int i;
-
- netif_stop_queue(dev);
-
- if (hamachi_debug > 1) {
- printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %4.4x Rx %4.4x Int %2.2x.\n",
- dev->name, readw(ioaddr + TxStatus),
- readw(ioaddr + RxStatus), readl(ioaddr + IntrStatus));
- printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n",
- dev->name, hmp->cur_tx, hmp->dirty_tx, hmp->cur_rx, hmp->dirty_rx);
- }
-
- /* Disable interrupts by clearing the interrupt mask. */
- writel(0x0000, ioaddr + InterruptEnable);
-
- /* Stop the chip's Tx and Rx processes. */
- writel(2, ioaddr + RxCmd);
- writew(2, ioaddr + TxCmd);
-
-#ifdef __i386__
- if (hamachi_debug > 2) {
- printk(KERN_DEBUG " Tx ring at %8.8x:\n",
- (int)hmp->tx_ring_dma);
- for (i = 0; i < TX_RING_SIZE; i++)
- printk(KERN_DEBUG " %c #%d desc. %8.8x %8.8x.\n",
- readl(ioaddr + TxCurPtr) == (long)&hmp->tx_ring[i] ? '>' : ' ',
- i, hmp->tx_ring[i].status_n_length, hmp->tx_ring[i].addr);
- printk(KERN_DEBUG " Rx ring %8.8x:\n",
- (int)hmp->rx_ring_dma);
- for (i = 0; i < RX_RING_SIZE; i++) {
- printk(KERN_DEBUG " %c #%d desc. %4.4x %8.8x\n",
- readl(ioaddr + RxCurPtr) == (long)&hmp->rx_ring[i] ? '>' : ' ',
- i, hmp->rx_ring[i].status_n_length, hmp->rx_ring[i].addr);
- if (hamachi_debug > 6) {
- if (*(u8*)hmp->rx_skbuff[i]->data != 0x69) {
- u16 *addr = (u16 *)
- hmp->rx_skbuff[i]->data;
- int j;
- printk(KERN_DEBUG "Addr: ");
- for (j = 0; j < 0x50; j++)
- printk(" %4.4x", addr[j]);
- printk("\n");
- }
- }
- }
- }
-#endif /* __i386__ debugging only */
-
- free_irq(hmp->pci_dev->irq, dev);
-
- timer_delete_sync(&hmp->timer);
-
- /* Free all the skbuffs in the Rx queue. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- skb = hmp->rx_skbuff[i];
- hmp->rx_ring[i].status_n_length = 0;
- if (skb) {
- dma_unmap_single(&hmp->pci_dev->dev,
- leXX_to_cpu(hmp->rx_ring[i].addr),
- hmp->rx_buf_sz, DMA_FROM_DEVICE);
- dev_kfree_skb(skb);
- hmp->rx_skbuff[i] = NULL;
- }
- hmp->rx_ring[i].addr = cpu_to_leXX(0xBADF00D0); /* An invalid address. */
- }
- for (i = 0; i < TX_RING_SIZE; i++) {
- skb = hmp->tx_skbuff[i];
- if (skb) {
- dma_unmap_single(&hmp->pci_dev->dev,
- leXX_to_cpu(hmp->tx_ring[i].addr),
- skb->len, DMA_TO_DEVICE);
- dev_kfree_skb(skb);
- hmp->tx_skbuff[i] = NULL;
- }
- }
-
- writeb(0x00, ioaddr + LEDCtrl);
-
- return 0;
-}
-
-static struct net_device_stats *hamachi_get_stats(struct net_device *dev)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- void __iomem *ioaddr = hmp->base;
-
- /* We should lock this segment of code for SMP eventually, although
- the vulnerability window is very small and statistics are
- non-critical. */
- /* Ok, what goes here? This appears to be stuck at 21 packets
- according to ifconfig. It does get incremented in hamachi_tx(),
- so I think I'll comment it out here and see if better things
- happen.
- */
- /* dev->stats.tx_packets = readl(ioaddr + 0x000); */
-
- /* Total Uni+Brd+Multi */
- dev->stats.rx_bytes = readl(ioaddr + 0x330);
- /* Total Uni+Brd+Multi */
- dev->stats.tx_bytes = readl(ioaddr + 0x3B0);
- /* Multicast Rx */
- dev->stats.multicast = readl(ioaddr + 0x320);
-
- /* Over+Undersized */
- dev->stats.rx_length_errors = readl(ioaddr + 0x368);
- /* Jabber */
- dev->stats.rx_over_errors = readl(ioaddr + 0x35C);
- /* Jabber */
- dev->stats.rx_crc_errors = readl(ioaddr + 0x360);
- /* Symbol Errs */
- dev->stats.rx_frame_errors = readl(ioaddr + 0x364);
- /* Dropped */
- dev->stats.rx_missed_errors = readl(ioaddr + 0x36C);
-
- return &dev->stats;
-}
-
-static void set_rx_mode(struct net_device *dev)
-{
- struct hamachi_private *hmp = netdev_priv(dev);
- void __iomem *ioaddr = hmp->base;
-
- if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
- writew(0x000F, ioaddr + AddrMode);
- } else if ((netdev_mc_count(dev) > 63) || (dev->flags & IFF_ALLMULTI)) {
- /* Too many to match, or accept all multicasts. */
- writew(0x000B, ioaddr + AddrMode);
- } else if (!netdev_mc_empty(dev)) { /* Must use the CAM filter. */
- struct netdev_hw_addr *ha;
- int i = 0;
-
- netdev_for_each_mc_addr(ha, dev) {
- writel(*(u32 *)(ha->addr), ioaddr + 0x100 + i*8);
- writel(0x20000 | (*(u16 *)&ha->addr[4]),
- ioaddr + 0x104 + i*8);
- i++;
- }
- /* Clear remaining entries. */
- for (; i < 64; i++)
- writel(0, ioaddr + 0x104 + i*8);
- writew(0x0003, ioaddr + AddrMode);
- } else { /* Normal, unicast/broadcast-only mode. */
- writew(0x0001, ioaddr + AddrMode);
- }
-}
-
-static int check_if_running(struct net_device *dev)
-{
- if (!netif_running(dev))
- return -EINVAL;
- return 0;
-}
-
-static void hamachi_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
- struct hamachi_private *np = netdev_priv(dev);
-
- strscpy(info->driver, DRV_NAME, sizeof(info->driver));
- strscpy(info->version, DRV_VERSION, sizeof(info->version));
- strscpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
-}
-
-static int hamachi_get_link_ksettings(struct net_device *dev,
- struct ethtool_link_ksettings *cmd)
-{
- struct hamachi_private *np = netdev_priv(dev);
- spin_lock_irq(&np->lock);
- mii_ethtool_get_link_ksettings(&np->mii_if, cmd);
- spin_unlock_irq(&np->lock);
- return 0;
-}
-
-static int hamachi_set_link_ksettings(struct net_device *dev,
- const struct ethtool_link_ksettings *cmd)
-{
- struct hamachi_private *np = netdev_priv(dev);
- int res;
- spin_lock_irq(&np->lock);
- res = mii_ethtool_set_link_ksettings(&np->mii_if, cmd);
- spin_unlock_irq(&np->lock);
- return res;
-}
-
-static int hamachi_nway_reset(struct net_device *dev)
-{
- struct hamachi_private *np = netdev_priv(dev);
- return mii_nway_restart(&np->mii_if);
-}
-
-static u32 hamachi_get_link(struct net_device *dev)
-{
- struct hamachi_private *np = netdev_priv(dev);
- return mii_link_ok(&np->mii_if);
-}
-
-static const struct ethtool_ops ethtool_ops = {
- .begin = check_if_running,
- .get_drvinfo = hamachi_get_drvinfo,
- .nway_reset = hamachi_nway_reset,
- .get_link = hamachi_get_link,
- .get_link_ksettings = hamachi_get_link_ksettings,
- .set_link_ksettings = hamachi_set_link_ksettings,
-};
-
-static const struct ethtool_ops ethtool_ops_no_mii = {
- .begin = check_if_running,
- .get_drvinfo = hamachi_get_drvinfo,
-};
-
-/* private ioctl: set rx,tx intr params */
-static int hamachi_siocdevprivate(struct net_device *dev, struct ifreq *rq,
- void __user *data, int cmd)
-{
- struct hamachi_private *np = netdev_priv(dev);
- u32 *d = (u32 *)&rq->ifr_ifru;
-
- if (!netif_running(dev))
- return -EINVAL;
-
- if (cmd != SIOCDEVPRIVATE + 3)
- return -EOPNOTSUPP;
-
- /* Should add this check here or an ordinary user can do nasty
- * things. -KDU
- *
- * TODO: Shut down the Rx and Tx engines while doing this.
- */
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- writel(d[0], np->base + TxIntrCtrl);
- writel(d[1], np->base + RxIntrCtrl);
- printk(KERN_NOTICE "%s: tx %08x, rx %08x intr\n", dev->name,
- (u32)readl(np->base + TxIntrCtrl),
- (u32)readl(np->base + RxIntrCtrl));
-
- return 0;
-}
-
-static int hamachi_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct hamachi_private *np = netdev_priv(dev);
- struct mii_ioctl_data *data = if_mii(rq);
- 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 void hamachi_remove_one(struct pci_dev *pdev)
-{
- struct net_device *dev = pci_get_drvdata(pdev);
-
- if (dev) {
- struct hamachi_private *hmp = netdev_priv(dev);
-
- dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, hmp->rx_ring,
- hmp->rx_ring_dma);
- dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, hmp->tx_ring,
- hmp->tx_ring_dma);
- unregister_netdev(dev);
- iounmap(hmp->base);
- free_netdev(dev);
- pci_release_regions(pdev);
- }
-}
-
-static const struct pci_device_id hamachi_pci_tbl[] = {
- { 0x1318, 0x0911, PCI_ANY_ID, PCI_ANY_ID, },
- { 0, }
-};
-MODULE_DEVICE_TABLE(pci, hamachi_pci_tbl);
-
-static struct pci_driver hamachi_driver = {
- .name = DRV_NAME,
- .id_table = hamachi_pci_tbl,
- .probe = hamachi_init_one,
- .remove = hamachi_remove_one,
-};
-
-static int __init hamachi_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(&hamachi_driver);
-}
-
-static void __exit hamachi_exit (void)
-{
- pci_unregister_driver(&hamachi_driver);
-}
-
-
-module_init(hamachi_init);
-module_exit(hamachi_exit);
--
2.34.1
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH 2/2] net: packetengines: remove obsolete yellowfin driver and vendor dir
2026-04-22 4:48 [PATCH 0/2] net: packetengines: remove obsolete PCI drivers Mingyu Wang
2026-04-22 4:48 ` [PATCH 1/2] net: packetengines: remove obsolete hamachi driver Mingyu Wang
@ 2026-04-22 4:48 ` Mingyu Wang
2026-04-22 13:04 ` Andrew Lunn
1 sibling, 1 reply; 5+ messages in thread
From: Mingyu Wang @ 2026-04-22 4:48 UTC (permalink / raw)
To: andrew+netdev, davem, edumazet, kuba, pabeni
Cc: tglx, mingo, netdev, linux-kernel, Mingyu Wang
Similar to the hamachi driver, the yellowfin driver supports hardware
that is over two decades old and no longer in active use.
Since yellowfin was the last remaining driver in the packetengines
vendor directory, we can now safely remove the entire directory and
drop its associated references from the parent Kconfig and Makefile.
This eliminates dead code and reduces the overall maintenance burden
on the netdev subsystem.
Signed-off-by: Mingyu Wang <25181214217@stu.xidian.edu.cn>
---
drivers/net/ethernet/Kconfig | 1 -
drivers/net/ethernet/Makefile | 1 -
drivers/net/ethernet/packetengines/Kconfig | 34 -
drivers/net/ethernet/packetengines/Makefile | 6 -
.../net/ethernet/packetengines/yellowfin.c | 1438 -----------------
5 files changed, 1480 deletions(-)
delete mode 100644 drivers/net/ethernet/packetengines/Kconfig
delete mode 100644 drivers/net/ethernet/packetengines/Makefile
delete mode 100644 drivers/net/ethernet/packetengines/yellowfin.c
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index bdc29d143160..65edd786099e 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -157,7 +157,6 @@ config OA_TC6
To know the implementation details, refer documentation in
<file:Documentation/networking/oa-tc6-framework.rst>.
-source "drivers/net/ethernet/packetengines/Kconfig"
source "drivers/net/ethernet/pasemi/Kconfig"
source "drivers/net/ethernet/pensando/Kconfig"
source "drivers/net/ethernet/qlogic/Kconfig"
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index 6bffb60ba644..ba4f7c340fab 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -73,7 +73,6 @@ obj-$(CONFIG_NET_VENDOR_NVIDIA) += nvidia/
obj-$(CONFIG_LPC_ENET) += nxp/
obj-$(CONFIG_NET_VENDOR_OKI) += oki-semi/
obj-$(CONFIG_ETHOC) += ethoc.o
-obj-$(CONFIG_NET_VENDOR_PACKET_ENGINES) += packetengines/
obj-$(CONFIG_NET_VENDOR_PASEMI) += pasemi/
obj-$(CONFIG_NET_VENDOR_QLOGIC) += qlogic/
obj-$(CONFIG_NET_VENDOR_QUALCOMM) += qualcomm/
diff --git a/drivers/net/ethernet/packetengines/Kconfig b/drivers/net/ethernet/packetengines/Kconfig
deleted file mode 100644
index 8a255f0e7b44..000000000000
--- a/drivers/net/ethernet/packetengines/Kconfig
+++ /dev/null
@@ -1,34 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Packet Engines device configuration
-#
-
-config NET_VENDOR_PACKET_ENGINES
- bool "Packet Engines devices"
- default y
- depends on PCI
- help
- If you have a network (Ethernet) card belonging to this class, say Y.
-
- Note that the answer to this question doesn't directly affect the
- kernel: saying N will just cause the configurator to skip all
- the questions about Packet Engines devices. If you say Y, you will
- be asked for your specific card in the following questions.
-
-if NET_VENDOR_PACKET_ENGINES
-
-config YELLOWFIN
- tristate "Packet Engines Yellowfin Gigabit-NIC support"
- depends on PCI
- select CRC32
- help
- Say Y here if you have a Packet Engines G-NIC PCI Gigabit Ethernet
- adapter or the SYM53C885 Ethernet controller. The Gigabit adapter is
- used by the Beowulf Linux cluster project. See
- <http://cesdis.gsfc.nasa.gov/linux/drivers/yellowfin.html> for more
- information about this driver in particular and Beowulf in general.
-
- To compile this driver as a module, choose M here: the module
- will be called yellowfin. This is recommended.
-
-endif # NET_VENDOR_PACKET_ENGINES
diff --git a/drivers/net/ethernet/packetengines/Makefile b/drivers/net/ethernet/packetengines/Makefile
deleted file mode 100644
index 62a165ff2b26..000000000000
--- a/drivers/net/ethernet/packetengines/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Makefile for the Packet Engines network device drivers.
-#
-
-obj-$(CONFIG_YELLOWFIN) += yellowfin.o
diff --git a/drivers/net/ethernet/packetengines/yellowfin.c b/drivers/net/ethernet/packetengines/yellowfin.c
deleted file mode 100644
index 1e25ac13a7d8..000000000000
--- a/drivers/net/ethernet/packetengines/yellowfin.c
+++ /dev/null
@@ -1,1438 +0,0 @@
-/* yellowfin.c: A Packet Engines G-NIC ethernet driver for linux. */
-/*
- Written 1997-2001 by Donald Becker.
-
- 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 for the Packet Engines G-NIC PCI Gigabit Ethernet adapter.
- It also supports the Symbios Logic version of the same chip core.
-
- The author may be reached as becker@scyld.com, or C/O
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
-
- Support and updates available at
- http://www.scyld.com/network/yellowfin.html
- [link no longer provides useful info -jgarzik]
-
-*/
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#define DRV_NAME "yellowfin"
-#define DRV_VERSION "2.1"
-#define DRV_RELDATE "Sep 11, 2006"
-
-/* The user-configurable values.
- These may be modified when a driver module is loaded.*/
-
-static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
-/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
-static int max_interrupt_work = 20;
-static int mtu;
-#ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */
-/* System-wide count of bogus-rx frames. */
-static int bogus_rx;
-static int dma_ctrl = 0x004A0263; /* Constrained by errata */
-static int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */
-#elif defined(YF_NEW) /* A future perfect board :->. */
-static int dma_ctrl = 0x00CAC277; /* Override when loading module! */
-static int fifo_cfg = 0x0028;
-#else
-static const int dma_ctrl = 0x004A0263; /* Constrained by errata */
-static const int fifo_cfg = 0x0020; /* Bypass external Tx FIFO. */
-#endif
-
-/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
- Setting to > 1514 effectively disables this feature. */
-static int rx_copybreak;
-
-/* Used to pass the media type, etc.
- No media types are currently defined. These exist for driver
- interoperability.
-*/
-#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};
-
-/* Do ugly workaround for GX server chipset errata. */
-static int gx_fix;
-
-/* Operational parameters that are set at compile time. */
-
-/* Keep the ring sizes a power of two for efficiency.
- Making the Tx ring too long 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_SIZE 12 /* Must be > 4 && <= TX_RING_SIZE */
-#define RX_RING_SIZE 64
-#define STATUS_TOTAL_SIZE TX_RING_SIZE*sizeof(struct tx_status_words)
-#define TX_TOTAL_SIZE 2*TX_RING_SIZE*sizeof(struct yellowfin_desc)
-#define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct yellowfin_desc)
-
-/* 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.*/
-
-#define yellowfin_debug debug
-
-#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/interrupt.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/mii.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/ethtool.h>
-#include <linux/crc32.h>
-#include <linux/bitops.h>
-#include <linux/uaccess.h>
-#include <asm/processor.h> /* Processor type for cache alignment. */
-#include <linux/unaligned.h>
-#include <asm/io.h>
-
-/* These identify the driver base version and may not be removed. */
-static const char version[] =
- KERN_INFO DRV_NAME ".c:v1.05 1/09/2001 Written by Donald Becker <becker@scyld.com>\n"
- " (unofficial 2.4.x port, " DRV_VERSION ", " DRV_RELDATE ")\n";
-
-MODULE_AUTHOR("Donald Becker <becker@scyld.com>");
-MODULE_DESCRIPTION("Packet Engines Yellowfin G-NIC Gigabit Ethernet driver");
-MODULE_LICENSE("GPL");
-
-module_param(max_interrupt_work, int, 0);
-module_param(mtu, int, 0);
-module_param(debug, int, 0);
-module_param(rx_copybreak, int, 0);
-module_param_array(options, int, NULL, 0);
-module_param_array(full_duplex, int, NULL, 0);
-module_param(gx_fix, int, 0);
-MODULE_PARM_DESC(max_interrupt_work, "G-NIC maximum events handled per interrupt");
-MODULE_PARM_DESC(mtu, "G-NIC MTU (all boards)");
-MODULE_PARM_DESC(debug, "G-NIC debug level (0-7)");
-MODULE_PARM_DESC(rx_copybreak, "G-NIC copy breakpoint for copy-only-tiny-frames");
-MODULE_PARM_DESC(options, "G-NIC: Bits 0-3: media type, bit 17: full duplex");
-MODULE_PARM_DESC(full_duplex, "G-NIC full duplex setting(s) (1)");
-MODULE_PARM_DESC(gx_fix, "G-NIC: enable GX server chipset bug workaround (0-1)");
-
-/*
- Theory of Operation
-
-I. Board Compatibility
-
-This device driver is designed for the Packet Engines "Yellowfin" Gigabit
-Ethernet adapter. The G-NIC 64-bit PCI card is supported, as well as the
-Symbios 53C885E dual function chip.
-
-II. Board-specific settings
-
-PCI bus devices are configured by the system at boot time, so no jumpers
-need to be set on the board. The system BIOS preferably should assign the
-PCI INTA signal to an otherwise unused system IRQ line.
-Note: Kernel versions earlier than 1.3.73 do not support shared PCI
-interrupt lines.
-
-III. Driver operation
-
-IIIa. Ring buffers
-
-The Yellowfin uses the Descriptor Based DMA Architecture specified by Apple.
-This is a descriptor list scheme similar to that used by the EEPro100 and
-Tulip. 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.
-
-The driver allocates full frame size skbuffs for the Rx ring buffers at
-open() time and passes the skb->data field to the Yellowfin 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 and replaced by a newly allocated skbuff.
-
-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. For small frames the copying cost is negligible (esp. considering
-that we are pre-loading the cache with immediately useful header
-information). For large frames the copying cost is non-trivial, and the
-larger copy might flush the cache of useful data.
-
-IIIC. Synchronization
-
-The driver runs as two independent, single-threaded flows of control. One
-is the send-packet routine, which enforces single-threaded use by the
-dev->tbusy flag. The other thread is the interrupt handler, which is single
-threaded by the hardware and other software.
-
-The send packet thread has partial control over the Tx ring and 'dev->tbusy'
-flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next
-queue slot is empty, it clears the tbusy flag when finished otherwise it sets
-the 'yp->tx_full' flag.
-
-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. Iff the 'yp->tx_full' flag is set, it
-clears both the tx_full and tbusy flags.
-
-IV. Notes
-
-Thanks to Kim Stearns of Packet Engines for providing a pair of G-NIC boards.
-Thanks to Bruce Faust of Digitalscape for providing both their SYM53C885 board
-and an AlphaStation to verify the Alpha port!
-
-IVb. References
-
-Yellowfin Engineering Design Specification, 4/23/97 Preliminary/Confidential
-Symbios SYM53C885 PCI-SCSI/Fast Ethernet Multifunction Controller Preliminary
- Data Manual v3.0
-http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html
-http://cesdis.gsfc.nasa.gov/linux/misc/100mbps.html
-
-IVc. Errata
-
-See Packet Engines confidential appendix (prototype chips only).
-*/
-
-
-
-enum capability_flags {
- HasMII=1, FullTxStatus=2, IsGigabit=4, HasMulticastBug=8, FullRxStatus=16,
- HasMACAddrBug=32, /* Only on early revs. */
- DontUseEeprom=64, /* Don't read the MAC from the EEPROm. */
-};
-
-/* The PCI I/O space extent. */
-enum {
- YELLOWFIN_SIZE = 0x100,
-};
-
-struct pci_id_info {
- const char *name;
- struct match_info {
- int pci, pci_mask, subsystem, subsystem_mask;
- int revision, revision_mask; /* Only 8 bits. */
- } id;
- int drv_flags; /* Driver use, intended as capability flags. */
-};
-
-static const struct pci_id_info pci_id_tbl[] = {
- {"Yellowfin G-NIC Gigabit Ethernet", { 0x07021000, 0xffffffff},
- FullTxStatus | IsGigabit | HasMulticastBug | HasMACAddrBug | DontUseEeprom},
- {"Symbios SYM83C885", { 0x07011000, 0xffffffff},
- HasMII | DontUseEeprom },
- { }
-};
-
-static const struct pci_device_id yellowfin_pci_tbl[] = {
- { 0x1000, 0x0702, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { 0x1000, 0x0701, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
- { }
-};
-MODULE_DEVICE_TABLE (pci, yellowfin_pci_tbl);
-
-
-/* Offsets to the Yellowfin registers. Various sizes and alignments. */
-enum yellowfin_offsets {
- TxCtrl=0x00, TxStatus=0x04, TxPtr=0x0C,
- TxIntrSel=0x10, TxBranchSel=0x14, TxWaitSel=0x18,
- RxCtrl=0x40, RxStatus=0x44, RxPtr=0x4C,
- RxIntrSel=0x50, RxBranchSel=0x54, RxWaitSel=0x58,
- EventStatus=0x80, IntrEnb=0x82, IntrClear=0x84, IntrStatus=0x86,
- ChipRev=0x8C, DMACtrl=0x90, TxThreshold=0x94,
- Cnfg=0xA0, FrameGap0=0xA2, FrameGap1=0xA4,
- MII_Cmd=0xA6, MII_Addr=0xA8, MII_Wr_Data=0xAA, MII_Rd_Data=0xAC,
- MII_Status=0xAE,
- RxDepth=0xB8, FlowCtrl=0xBC,
- AddrMode=0xD0, StnAddr=0xD2, HashTbl=0xD8, FIFOcfg=0xF8,
- EEStatus=0xF0, EECtrl=0xF1, EEAddr=0xF2, EERead=0xF3, EEWrite=0xF4,
- EEFeature=0xF5,
-};
-
-/* The Yellowfin Rx and Tx buffer descriptors.
- Elements are written as 32 bit for endian portability. */
-struct yellowfin_desc {
- __le32 dbdma_cmd;
- __le32 addr;
- __le32 branch_addr;
- __le32 result_status;
-};
-
-struct tx_status_words {
-#ifdef __BIG_ENDIAN
- u16 tx_errs;
- u16 tx_cnt;
- u16 paused;
- u16 total_tx_cnt;
-#else /* Little endian chips. */
- u16 tx_cnt;
- u16 tx_errs;
- u16 total_tx_cnt;
- u16 paused;
-#endif /* __BIG_ENDIAN */
-};
-
-/* Bits in yellowfin_desc.cmd */
-enum desc_cmd_bits {
- CMD_TX_PKT=0x10000000, CMD_RX_BUF=0x20000000, CMD_TXSTATUS=0x30000000,
- CMD_NOP=0x60000000, CMD_STOP=0x70000000,
- BRANCH_ALWAYS=0x0C0000, INTR_ALWAYS=0x300000, WAIT_ALWAYS=0x030000,
- BRANCH_IFTRUE=0x040000,
-};
-
-/* Bits in yellowfin_desc.status */
-enum desc_status_bits { RX_EOP=0x0040, };
-
-/* Bits in the interrupt status/mask registers. */
-enum intr_status_bits {
- IntrRxDone=0x01, IntrRxInvalid=0x02, IntrRxPCIFault=0x04,IntrRxPCIErr=0x08,
- IntrTxDone=0x10, IntrTxInvalid=0x20, IntrTxPCIFault=0x40,IntrTxPCIErr=0x80,
- IntrEarlyRx=0x100, IntrWakeup=0x200, };
-
-#define PRIV_ALIGN 31 /* Required alignment mask */
-#define MII_CNT 4
-struct yellowfin_private {
- /* Descriptor rings first for alignment.
- Tx requires a second descriptor for status. */
- struct yellowfin_desc *rx_ring;
- struct yellowfin_desc *tx_ring;
- struct sk_buff* rx_skbuff[RX_RING_SIZE];
- struct sk_buff* tx_skbuff[TX_RING_SIZE];
- dma_addr_t rx_ring_dma;
- dma_addr_t tx_ring_dma;
-
- struct tx_status_words *tx_status;
- dma_addr_t tx_status_dma;
-
- struct timer_list timer; /* Media selection timer. */
- /* Frequently used and paired value: keep adjacent for cache effect. */
- int chip_id, drv_flags;
- struct pci_dev *pci_dev;
- unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */
- unsigned int rx_buf_sz; /* Based on MTU+slack. */
- struct tx_status_words *tx_tail_desc;
- unsigned int cur_tx, dirty_tx;
- int tx_threshold;
- unsigned int tx_full:1; /* The Tx queue is full. */
- unsigned int full_duplex:1; /* Full-duplex operation requested. */
- unsigned int duplex_lock:1;
- unsigned int medialock:1; /* Do not sense media. */
- unsigned int default_port:4; /* Last dev->if_port value. */
- /* MII transceiver section. */
- int mii_cnt; /* MII device addresses. */
- u16 advertising; /* NWay media advertisement */
- unsigned char phys[MII_CNT]; /* MII device addresses, only first one used */
- spinlock_t lock;
- void __iomem *base;
-};
-
-static int read_eeprom(void __iomem *ioaddr, int location);
-static int mdio_read(void __iomem *ioaddr, int phy_id, int location);
-static void mdio_write(void __iomem *ioaddr, int phy_id, int location, int value);
-static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
-static int yellowfin_open(struct net_device *dev);
-static void yellowfin_timer(struct timer_list *t);
-static void yellowfin_tx_timeout(struct net_device *dev, unsigned int txqueue);
-static int yellowfin_init_ring(struct net_device *dev);
-static netdev_tx_t yellowfin_start_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static irqreturn_t yellowfin_interrupt(int irq, void *dev_instance);
-static int yellowfin_rx(struct net_device *dev);
-static void yellowfin_error(struct net_device *dev, int intr_status);
-static int yellowfin_close(struct net_device *dev);
-static void set_rx_mode(struct net_device *dev);
-static const struct ethtool_ops ethtool_ops;
-
-static const struct net_device_ops netdev_ops = {
- .ndo_open = yellowfin_open,
- .ndo_stop = yellowfin_close,
- .ndo_start_xmit = yellowfin_start_xmit,
- .ndo_set_rx_mode = set_rx_mode,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_eth_ioctl = netdev_ioctl,
- .ndo_tx_timeout = yellowfin_tx_timeout,
-};
-
-static int yellowfin_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct net_device *dev;
- struct yellowfin_private *np;
- int irq;
- int chip_idx = ent->driver_data;
- static int find_cnt;
- void __iomem *ioaddr;
- int i, option = find_cnt < MAX_UNITS ? options[find_cnt] : 0;
- int drv_flags = pci_id_tbl[chip_idx].drv_flags;
- void *ring_space;
- dma_addr_t ring_dma;
-#ifdef USE_IO_OPS
- int bar = 0;
-#else
- int bar = 1;
-#endif
- u8 addr[ETH_ALEN];
-
-/* 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
-
- i = pci_enable_device(pdev);
- if (i) return i;
-
- dev = alloc_etherdev(sizeof(*np));
- if (!dev)
- return -ENOMEM;
-
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- np = netdev_priv(dev);
-
- if (pci_request_regions(pdev, DRV_NAME))
- goto err_out_free_netdev;
-
- pci_set_master (pdev);
-
- ioaddr = pci_iomap(pdev, bar, YELLOWFIN_SIZE);
- if (!ioaddr)
- goto err_out_free_res;
-
- irq = pdev->irq;
-
- if (drv_flags & DontUseEeprom)
- for (i = 0; i < 6; i++)
- addr[i] = ioread8(ioaddr + StnAddr + i);
- else {
- int ee_offset = (read_eeprom(ioaddr, 6) == 0xff ? 0x100 : 0);
- for (i = 0; i < 6; i++)
- addr[i] = read_eeprom(ioaddr, ee_offset + i);
- }
- eth_hw_addr_set(dev, addr);
-
- /* Reset the chip. */
- iowrite32(0x80000000, ioaddr + DMACtrl);
-
- pci_set_drvdata(pdev, dev);
- spin_lock_init(&np->lock);
-
- np->pci_dev = pdev;
- np->chip_id = chip_idx;
- np->drv_flags = drv_flags;
- np->base = ioaddr;
-
- ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE, &ring_dma,
- GFP_KERNEL);
- if (!ring_space)
- goto err_out_cleardev;
- np->tx_ring = ring_space;
- np->tx_ring_dma = ring_dma;
-
- ring_space = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE, &ring_dma,
- GFP_KERNEL);
- if (!ring_space)
- goto err_out_unmap_tx;
- np->rx_ring = ring_space;
- np->rx_ring_dma = ring_dma;
-
- ring_space = dma_alloc_coherent(&pdev->dev, STATUS_TOTAL_SIZE,
- &ring_dma, GFP_KERNEL);
- if (!ring_space)
- goto err_out_unmap_rx;
- np->tx_status = 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->netdev_ops = &netdev_ops;
- dev->ethtool_ops = ðtool_ops;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- if (mtu)
- dev->mtu = mtu;
-
- i = register_netdev(dev);
- if (i)
- goto err_out_unmap_status;
-
- netdev_info(dev, "%s type %8x at %p, %pM, IRQ %d\n",
- pci_id_tbl[chip_idx].name,
- ioread32(ioaddr + ChipRev), ioaddr,
- dev->dev_addr, 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);
- netdev_info(dev, "MII PHY found at address %d, status 0x%04x advertising %04x\n",
- phy, mii_status, np->advertising);
- }
- }
- np->mii_cnt = phy_idx;
- }
-
- find_cnt++;
-
- return 0;
-
-err_out_unmap_status:
- dma_free_coherent(&pdev->dev, STATUS_TOTAL_SIZE, np->tx_status,
- np->tx_status_dma);
-err_out_unmap_rx:
- dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, np->rx_ring,
- np->rx_ring_dma);
-err_out_unmap_tx:
- dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, np->tx_ring,
- np->tx_ring_dma);
-err_out_cleardev:
- pci_iounmap(pdev, ioaddr);
-err_out_free_res:
- pci_release_regions(pdev);
-err_out_free_netdev:
- free_netdev (dev);
- return -ENODEV;
-}
-
-static int 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;
-}
-
-
-static int yellowfin_open(struct net_device *dev)
-{
- struct yellowfin_private *yp = netdev_priv(dev);
- const int irq = yp->pci_dev->irq;
- void __iomem *ioaddr = yp->base;
- int i, rc;
-
- /* Reset the chip. */
- iowrite32(0x80000000, ioaddr + DMACtrl);
-
- rc = request_irq(irq, yellowfin_interrupt, IRQF_SHARED, dev->name, dev);
- if (rc)
- return rc;
-
- rc = yellowfin_init_ring(dev);
- if (rc < 0)
- goto err_free_irq;
-
- 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) {
- netdev_printk(KERN_DEBUG, dev, "Done %s()\n", __func__);
- }
-
- /* Set the timer to check for link beat. */
- timer_setup(&yp->timer, yellowfin_timer, 0);
- yp->timer.expires = jiffies + 3*HZ;
- add_timer(&yp->timer);
-out:
- return rc;
-
-err_free_irq:
- free_irq(irq, dev);
- goto out;
-}
-
-static void yellowfin_timer(struct timer_list *t)
-{
- struct yellowfin_private *yp = timer_container_of(yp, t, timer);
- struct net_device *dev = pci_get_drvdata(yp->pci_dev);
- void __iomem *ioaddr = yp->base;
- int next_tick = 60*HZ;
-
- if (yellowfin_debug > 3) {
- netdev_printk(KERN_DEBUG, dev, "Yellowfin timer tick, status %08x\n",
- 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)
- netdev_printk(KERN_DEBUG, dev, "MII #%d status register is %04x, link partner capability %04x\n",
- 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, unsigned int txqueue)
-{
- struct yellowfin_private *yp = netdev_priv(dev);
- void __iomem *ioaddr = yp->base;
-
- netdev_warn(dev, "Yellowfin transmit timed out at %d/%d Tx status %04x, Rx status %04x, resetting...\n",
- yp->cur_tx, yp->dirty_tx,
- ioread32(ioaddr + TxStatus),
- ioread32(ioaddr + RxStatus));
-
- /* Note: these should be KERN_DEBUG. */
- if (yellowfin_debug) {
- int i;
- pr_warn(" Rx ring %p: ", yp->rx_ring);
- for (i = 0; i < RX_RING_SIZE; i++)
- pr_cont(" %08x", yp->rx_ring[i].result_status);
- pr_cont("\n");
- pr_warn(" Tx ring %p: ", yp->tx_ring);
- for (i = 0; i < TX_RING_SIZE; i++)
- pr_cont(" %04x /%08x",
- yp->tx_status[i].tx_errs,
- yp->tx_ring[i].result_status);
- pr_cont("\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 */
-
- netif_trans_update(dev); /* prevent tx timeout */
- dev->stats.tx_errors++;
-}
-
-/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
-static int yellowfin_init_ring(struct net_device *dev)
-{
- struct yellowfin_private *yp = netdev_priv(dev);
- int i, j;
-
- 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 = netdev_alloc_skb(dev, yp->rx_buf_sz + 2);
- yp->rx_skbuff[i] = skb;
- if (skb == NULL)
- break;
- skb_reserve(skb, 2); /* 16 byte align the IP header. */
- yp->rx_ring[i].addr = cpu_to_le32(dma_map_single(&yp->pci_dev->dev,
- skb->data,
- yp->rx_buf_sz,
- DMA_FROM_DEVICE));
- }
- if (i != RX_RING_SIZE) {
- for (j = 0; j < i; j++)
- dev_kfree_skb(yp->rx_skbuff[j]);
- return -ENOMEM;
- }
- 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
-{
- /* 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 0;
-}
-
-static netdev_tx_t 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 NETDEV_TX_OK;
- }
- }
- }
- yp->tx_skbuff[entry] = skb;
-
-#ifdef NO_TXSTATS
- yp->tx_ring[entry].addr = cpu_to_le32(dma_map_single(&yp->pci_dev->dev,
- skb->data,
- len, DMA_TO_DEVICE));
- 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(dma_map_single(&yp->pci_dev->dev,
- skb->data,
- len, DMA_TO_DEVICE));
- /* 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;
-
- if (yellowfin_debug > 4) {
- netdev_printk(KERN_DEBUG, dev, "Yellowfin transmit frame #%d queued in slot %d\n",
- yp->cur_tx, entry);
- }
- return NETDEV_TX_OK;
-}
-
-/* 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)
- netdev_printk(KERN_DEBUG, dev, "Yellowfin interrupt, status %04x\n",
- 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];
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
- /* Free the original skb. */
- dma_unmap_single(&yp->pci_dev->dev,
- le32_to_cpu(yp->tx_ring[entry].addr),
- skb->len, DMA_TO_DEVICE);
- dev_consume_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)
- netdev_printk(KERN_DEBUG, dev, "Tx queue %d check, Tx status %04x %04x %04x %04x\n",
- 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)
- netdev_printk(KERN_DEBUG, dev, "Transmit error, Tx status %04x\n",
- tx_errs);
-#endif
- dev->stats.tx_errors++;
- if (tx_errs & 0xF800) dev->stats.tx_aborted_errors++;
- if (tx_errs & 0x0800) dev->stats.tx_carrier_errors++;
- if (tx_errs & 0x2000) dev->stats.tx_window_errors++;
- if (tx_errs & 0x8000) dev->stats.tx_fifo_errors++;
- } else {
-#ifndef final_version
- if (yellowfin_debug > 4)
- netdev_printk(KERN_DEBUG, dev, "Normal transmit, Tx status %04x\n",
- tx_errs);
-#endif
- dev->stats.tx_bytes += skb->len;
- dev->stats.collisions += tx_errs & 15;
- dev->stats.tx_packets++;
- }
- /* Free the original skb. */
- dma_unmap_single(&yp->pci_dev->dev,
- yp->tx_ring[entry << 1].addr,
- skb->len, DMA_TO_DEVICE);
- dev_consume_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) {
- netdev_err(dev, "Out-of-sync dirty pointer, %d vs. %d, full=%d\n",
- 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) {
- netdev_warn(dev, "Too much work at interrupt, status=%#04x\n",
- intr_status);
- break;
- }
- } while (1);
-
- if (yellowfin_debug > 3)
- netdev_printk(KERN_DEBUG, dev, "exiting interrupt, status=%#04x\n",
- 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 %08x\n",
- entry, yp->rx_ring[entry].result_status);
- printk(KERN_DEBUG " #%d desc. %08x %08x %08x\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, __maybe_unused yf_size;
- u8 *buf_addr;
-
- if(!desc->result_status)
- break;
- dma_sync_single_for_cpu(&yp->pci_dev->dev,
- le32_to_cpu(desc->addr),
- yp->rx_buf_sz, DMA_FROM_DEVICE);
- 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 = get_unaligned_le16(&(buf_addr[data_size - 2]));
- if (yellowfin_debug > 4)
- printk(KERN_DEBUG " %s() status was %04x\n",
- __func__, frame_status);
- if (--boguscnt < 0)
- break;
-
- yf_size = sizeof(struct yellowfin_desc);
-
- if ( ! (desc_status & RX_EOP)) {
- if (data_size != 0)
- netdev_warn(dev, "Oversized Ethernet frame spanned multiple buffers, status %04x, data_size %d!\n",
- desc_status, data_size);
- dev->stats.rx_length_errors++;
- } else if ((yp->drv_flags & IsGigabit) && (frame_status & 0x0038)) {
- /* There was a error. */
- if (yellowfin_debug > 3)
- printk(KERN_DEBUG " %s() Rx error was %04x\n",
- __func__, frame_status);
- dev->stats.rx_errors++;
- if (frame_status & 0x0060) dev->stats.rx_length_errors++;
- if (frame_status & 0x0008) dev->stats.rx_frame_errors++;
- if (frame_status & 0x0010) dev->stats.rx_crc_errors++;
- if (frame_status < 0) dev->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];
- dev->stats.rx_errors++;
- if (status1 & 0xC0) dev->stats.rx_length_errors++;
- if (status2 & 0x03) dev->stats.rx_frame_errors++;
- if (status2 & 0x04) dev->stats.rx_crc_errors++;
- if (status2 & 0x80) dev->stats.rx_dropped++;
-#ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */
- } else if ((yp->flags & HasMACAddrBug) &&
- !ether_addr_equal(le32_to_cpu(yp->rx_ring_dma +
- entry * yf_size),
- dev->dev_addr) &&
- !ether_addr_equal(le32_to_cpu(yp->rx_ring_dma +
- entry * yf_size),
- "\377\377\377\377\377\377")) {
- if (bogus_rx++ == 0)
- netdev_warn(dev, "Bad frame to %pM\n",
- buf_addr);
-#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 " %s() normal Rx pkt length %d of %d, bogus_cnt %d\n",
- __func__, 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);
- dma_unmap_single(&yp->pci_dev->dev,
- le32_to_cpu(yp->rx_ring[entry].addr),
- yp->rx_buf_sz,
- DMA_FROM_DEVICE);
- yp->rx_skbuff[entry] = NULL;
- } else {
- skb = netdev_alloc_skb(dev, pkt_len + 2);
- if (skb == NULL)
- break;
- skb_reserve(skb, 2); /* 16 byte align the IP header */
- skb_copy_to_linear_data(skb, rx_skb->data, pkt_len);
- skb_put(skb, pkt_len);
- dma_sync_single_for_device(&yp->pci_dev->dev,
- le32_to_cpu(desc->addr),
- yp->rx_buf_sz,
- DMA_FROM_DEVICE);
- }
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->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 = netdev_alloc_skb(dev, yp->rx_buf_sz + 2);
- if (skb == NULL)
- break; /* Better luck next round. */
- yp->rx_skbuff[entry] = skb;
- skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
- yp->rx_ring[entry].addr = cpu_to_le32(dma_map_single(&yp->pci_dev->dev,
- skb->data,
- yp->rx_buf_sz,
- DMA_FROM_DEVICE));
- }
- 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)
-{
- netdev_err(dev, "Something Wicked happened! %04x\n", intr_status);
- /* Hmmmmm, it's not clear what to do here. */
- if (intr_status & (IntrTxPCIErr | IntrTxPCIFault))
- dev->stats.tx_errors++;
- if (intr_status & (IntrRxPCIErr | IntrRxPCIFault))
- dev->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) {
- netdev_printk(KERN_DEBUG, dev, "Shutting down ethercard, status was Tx %04x Rx %04x Int %02x\n",
- ioread16(ioaddr + TxStatus),
- ioread16(ioaddr + RxStatus),
- ioread16(ioaddr + IntrStatus));
- netdev_printk(KERN_DEBUG, dev, "Queue pointers were Tx %d / %d, Rx %d / %d\n",
- 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);
-
- timer_delete(&yp->timer);
-
-#if defined(__i386__)
- if (yellowfin_debug > 2) {
- printk(KERN_DEBUG " Tx ring at %08llx:\n",
- (unsigned long long)yp->tx_ring_dma);
- for (i = 0; i < TX_RING_SIZE*2; i++)
- printk(KERN_DEBUG " %c #%d desc. %08x %08x %08x %08x\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(KERN_DEBUG " #%d status %04x %04x %04x %04x\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(KERN_DEBUG " Rx ring %08llx:\n",
- (unsigned long long)yp->rx_ring_dma);
- for (i = 0; i < RX_RING_SIZE; i++) {
- printk(KERN_DEBUG " %c #%d desc. %08x %08x %08x\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;
-
- printk(KERN_DEBUG);
- for (j = 0; j < 0x50; j++)
- pr_cont(" %04x",
- get_unaligned(((u16*)yp->rx_ring[i].addr) + j));
- pr_cont("\n");
- }
- }
- }
- }
-#endif /* __i386__ debugging only */
-
- free_irq(yp->pci_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 = cpu_to_le32(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++) {
- dev_kfree_skb(yp->tx_skbuff[i]);
- yp->tx_skbuff[i] = NULL;
- }
-
-#ifdef YF_PROTOTYPE /* Support for prototype hardware errata. */
- if (yellowfin_debug > 0) {
- netdev_printk(KERN_DEBUG, dev, "Received %d frames that we should not have\n",
- bogus_rx);
- }
-#endif
-
- return 0;
-}
-
-/* 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 ((netdev_mc_count(dev) > 64) ||
- (dev->flags & IFF_ALLMULTI)) {
- /* Too many to filter well, or accept all multicasts. */
- iowrite16(0x000B, ioaddr + AddrMode);
- } else if (!netdev_mc_empty(dev)) { /* Must use the multicast hash table. */
- struct netdev_hw_addr *ha;
- u16 hash_table[4];
- int i;
-
- memset(hash_table, 0, sizeof(hash_table));
- netdev_for_each_mc_addr(ha, dev) {
- 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, ha->addr) >> 3) & 0x3f;
- hash_table[bit >> 4] |= (1 << bit);
- bit = (ether_crc_le(4, ha->addr) >> 3) & 0x3f;
- hash_table[bit >> 4] |= (1 << bit);
- bit = (ether_crc_le(5, ha->addr) >> 3) & 0x3f;
- hash_table[bit >> 4] |= (1 << bit);
- }
- bit = (ether_crc_le(6, ha->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);
-
- strscpy(info->driver, DRV_NAME, sizeof(info->driver));
- strscpy(info->version, DRV_VERSION, sizeof(info->version));
- strscpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
-}
-
-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;
- fallthrough;
-
- 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 (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 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);
-
- dma_free_coherent(&pdev->dev, STATUS_TOTAL_SIZE, np->tx_status,
- np->tx_status_dma);
- dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, np->rx_ring,
- np->rx_ring_dma);
- dma_free_coherent(&pdev->dev, 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);
-}
-
-
-static struct pci_driver yellowfin_driver = {
- .name = DRV_NAME,
- .id_table = yellowfin_pci_tbl,
- .probe = yellowfin_init_one,
- .remove = 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);
--
2.34.1
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