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Message-Id: <a3de6641-ca48-44a5-b065-a7a9f27669b4@app.fastmail.com>
Date: Tue, 08 Oct 2024 19:44:52 +0000
From: "Arnd Bergmann" <arnd@...db.de>
To: "Jakub Kicinski" <kuba@...nel.org>,
"David S . Miller" <davem@...emloft.net>
Cc: Netdev <netdev@...r.kernel.org>, "Eric Dumazet" <edumazet@...gle.com>,
"Paolo Abeni" <pabeni@...hat.com>, kda@...ux-powerpc.org,
"Thomas Bogendoerfer" <tsbogend@...ha.franken.de>,
"Michael Ellerman" <mpe@...erman.id.au>,
"Nicholas Piggin" <npiggin@...il.com>,
"Christophe Leroy" <christophe.leroy@...roup.eu>,
"Naveen N Rao" <naveen@...nel.org>,
"Madhavan Srinivasan" <maddy@...ux.ibm.com>, pctammela@...atatu.com,
victor@...atatu.com, coelacanthushex@...il.com,
"Jamal Hadi Salim" <jhs@...atatu.com>, "Simon Horman" <horms@...nel.org>,
"Shannon Nelson" <shannon.nelson@....com>, sd@...asysnail.net,
linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
"Denis Kirjanov" <kirjanov@...il.com>, "Denis Kirjanov" <dkirjanov@...e.de>
Subject: Re: [PATCH net-next] eth: remove the DLink/Sundance (ST201) driver
On Tue, Oct 8, 2024, at 15:48, Jakub Kicinski wrote:
> Konstantin reports the maintainer's address bounces.
> There is no other maintainer and the driver is quite old.
> There is a good chance nobody is using this driver any more.
> Let's try to remove it completely, we can revert it back in
> if someone complains.
>
> Link: https://lore.kernel.org/20240925-bizarre-earwig-from-pluto-1484aa@lemu/
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
I see that Denis sent multiple patches from other email addresses
in the past few years. Adding him to Cc here, in case he has
any objections.
> ---
> CC: kda@...ux-powerpc.org
> CC: arnd@...db.de
> CC: tsbogend@...ha.franken.de
> CC: mpe@...erman.id.au
> CC: npiggin@...il.com
> CC: christophe.leroy@...roup.eu
> CC: naveen@...nel.org
> CC: maddy@...ux.ibm.com
> CC: pctammela@...atatu.com
> CC: victor@...atatu.com
> CC: coelacanthushex@...il.com
> CC: jhs@...atatu.com
> CC: horms@...nel.org
> CC: shannon.nelson@....com
> CC: sd@...asysnail.net
> CC: linux-mips@...r.kernel.org
> CC: linuxppc-dev@...ts.ozlabs.org
> ---
> MAINTAINERS | 6 -
> arch/mips/configs/mtx1_defconfig | 1 -
> arch/powerpc/configs/ppc6xx_defconfig | 1 -
> drivers/net/ethernet/dlink/Kconfig | 20 -
> drivers/net/ethernet/dlink/Makefile | 1 -
> drivers/net/ethernet/dlink/sundance.c | 1985 -------------------------
> 6 files changed, 2014 deletions(-)
> delete mode 100644 drivers/net/ethernet/dlink/sundance.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index e5311fc990c4..3ee4b6ca8da4 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -22242,12 +22242,6 @@ S: Maintained
> F: Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml
> F: drivers/input/keyboard/sun4i-lradc-keys.c
>
> -SUNDANCE NETWORK DRIVER
> -M: Denis Kirjanov <kda@...ux-powerpc.org>
> -L: netdev@...r.kernel.org
> -S: Maintained
> -F: drivers/net/ethernet/dlink/sundance.c
> -
> SUNPLUS ETHERNET DRIVER
> M: Wells Lu <wellslutw@...il.com>
> L: netdev@...r.kernel.org
> diff --git a/arch/mips/configs/mtx1_defconfig
> b/arch/mips/configs/mtx1_defconfig
> index 935585d8bb26..8e98c0796437 100644
> --- a/arch/mips/configs/mtx1_defconfig
> +++ b/arch/mips/configs/mtx1_defconfig
> @@ -275,7 +275,6 @@ CONFIG_DM9102=m
> CONFIG_ULI526X=m
> CONFIG_PCMCIA_XIRCOM=m
> CONFIG_DL2K=m
> -CONFIG_SUNDANCE=m
> CONFIG_PCMCIA_FMVJ18X=m
> CONFIG_E100=m
> CONFIG_E1000=m
> diff --git a/arch/powerpc/configs/ppc6xx_defconfig
> b/arch/powerpc/configs/ppc6xx_defconfig
> index c06344db0eb3..4d77e17541e9 100644
> --- a/arch/powerpc/configs/ppc6xx_defconfig
> +++ b/arch/powerpc/configs/ppc6xx_defconfig
> @@ -435,7 +435,6 @@ CONFIG_DM9102=m
> CONFIG_ULI526X=m
> CONFIG_PCMCIA_XIRCOM=m
> CONFIG_DL2K=m
> -CONFIG_SUNDANCE=m
> CONFIG_S2IO=m
> CONFIG_FEC_MPC52xx=m
> CONFIG_GIANFAR=m
> diff --git a/drivers/net/ethernet/dlink/Kconfig
> b/drivers/net/ethernet/dlink/Kconfig
> index 0d77f84c8e7b..e9e13654812c 100644
> --- a/drivers/net/ethernet/dlink/Kconfig
> +++ b/drivers/net/ethernet/dlink/Kconfig
> @@ -32,24 +32,4 @@ config DL2K
> To compile this driver as a module, choose M here: the
> module will be called dl2k.
>
> -config SUNDANCE
> - tristate "Sundance Alta support"
> - depends on PCI
> - select CRC32
> - select MII
> - help
> - This driver is for the Sundance "Alta" chip.
> - More specific information and updates are available from
> - <http://www.scyld.com/network/sundance.html>.
> -
> -config SUNDANCE_MMIO
> - bool "Use MMIO instead of PIO"
> - depends on SUNDANCE
> - help
> - Enable memory-mapped I/O for interaction with Sundance NIC
> registers.
> - Do NOT enable this by default, PIO (enabled when MMIO is disabled)
> - is known to solve bugs on certain chips.
> -
> - If unsure, say N.
> -
> endif # NET_VENDOR_DLINK
> diff --git a/drivers/net/ethernet/dlink/Makefile
> b/drivers/net/ethernet/dlink/Makefile
> index 3ff503c747db..38c236eb6007 100644
> --- a/drivers/net/ethernet/dlink/Makefile
> +++ b/drivers/net/ethernet/dlink/Makefile
> @@ -4,4 +4,3 @@
> #
>
> obj-$(CONFIG_DL2K) += dl2k.o
> -obj-$(CONFIG_SUNDANCE) += sundance.o
> diff --git a/drivers/net/ethernet/dlink/sundance.c
> b/drivers/net/ethernet/dlink/sundance.c
> deleted file mode 100644
> index 8af5ecec7d61..000000000000
> --- a/drivers/net/ethernet/dlink/sundance.c
> +++ /dev/null
> @@ -1,1985 +0,0 @@
> -/* sundance.c: A Linux device driver for the Sundance ST201 "Alta". */
> -/*
> - Written 1999-2000 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.
> -
> - The author may be reached as becker@...ld.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/sundance.html
> - [link no longer provides useful info -jgarzik]
> - Archives of the mailing list are still available at
> - https://www.beowulf.org/pipermail/netdrivers/
> -
> -*/
> -
> -#define DRV_NAME "sundance"
> -
> -/* 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 number of multicast addresses to filter (vs.
> rx-all-multicast).
> - Typical is a 64 element hash table based on the Ethernet CRC. */
> -static const int multicast_filter_limit = 32;
> -
> -/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
> - Setting to > 1518 effectively disables this feature.
> - This chip can receive into offset buffers, so the Alpha does not
> - need a copy-align. */
> -static int rx_copybreak;
> -static int flowctrl=1;
> -
> -/* media[] specifies the media type the NIC operates at.
> - autosense Autosensing active media.
> - 10mbps_hd 10Mbps half duplex.
> - 10mbps_fd 10Mbps full duplex.
> - 100mbps_hd 100Mbps half duplex.
> - 100mbps_fd 100Mbps full duplex.
> - 0 Autosensing active media.
> - 1 10Mbps half duplex.
> - 2 10Mbps full duplex.
> - 3 100Mbps half duplex.
> - 4 100Mbps full duplex.
> -*/
> -#define MAX_UNITS 8
> -static char *media[MAX_UNITS];
> -
> -
> -/* 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, and more than 128 requires modifying
> the
> - Tx error recovery.
> - Large receive rings merely waste memory. */
> -#define TX_RING_SIZE 32
> -#define TX_QUEUE_LEN (TX_RING_SIZE - 1) /* Limit ring entries actually
> used. */
> -#define RX_RING_SIZE 64
> -#define RX_BUDGET 32
> -#define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct netdev_desc)
> -#define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct netdev_desc)
> -
> -/* Operational parameters that usually are not changed. */
> -/* Time in jiffies before concluding the transmitter is hung. */
> -#define TX_TIMEOUT (4*HZ)
> -#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
> -
> -/* Include files, designed to support most kernel versions 2.0.0 and
> later. */
> -#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/netdevice.h>
> -#include <linux/etherdevice.h>
> -#include <linux/skbuff.h>
> -#include <linux/init.h>
> -#include <linux/bitops.h>
> -#include <linux/uaccess.h>
> -#include <asm/processor.h> /* Processor type for cache alignment. */
> -#include <asm/io.h>
> -#include <linux/delay.h>
> -#include <linux/spinlock.h>
> -#include <linux/dma-mapping.h>
> -#include <linux/crc32.h>
> -#include <linux/ethtool.h>
> -#include <linux/mii.h>
> -
> -MODULE_AUTHOR("Donald Becker <becker@...ld.com>");
> -MODULE_DESCRIPTION("Sundance Alta Ethernet driver");
> -MODULE_LICENSE("GPL");
> -
> -module_param(debug, int, 0);
> -module_param(rx_copybreak, int, 0);
> -module_param_array(media, charp, NULL, 0);
> -module_param(flowctrl, int, 0);
> -MODULE_PARM_DESC(debug, "Sundance Alta debug level (0-5)");
> -MODULE_PARM_DESC(rx_copybreak, "Sundance Alta copy breakpoint for
> copy-only-tiny-frames");
> -MODULE_PARM_DESC(flowctrl, "Sundance Alta flow control [0|1]");
> -
> -/*
> - Theory of Operation
> -
> -I. Board Compatibility
> -
> -This driver is designed for the Sundance Technologies "Alta" ST201
> chip.
> -
> -II. Board-specific settings
> -
> -III. Driver operation
> -
> -IIIa. Ring buffers
> -
> -This driver uses two statically allocated fixed-size descriptor lists
> -formed into rings by a branch from the final descriptor to the
> beginning of
> -the list. The ring sizes are set at compile time by RX/TX_RING_SIZE.
> -Some chips explicitly use only 2^N sized rings, while others use a
> -'next descriptor' pointer that the driver forms into rings.
> -
> -IIIb/c. Transmit/Receive Structure
> -
> -This driver uses a zero-copy receive and transmit scheme.
> -The driver allocates full frame size skbuffs for the Rx ring buffers at
> -open() time and passes the skb->data field to the chip as receive data
> -buffers. When an incoming frame is less than RX_COPYBREAK bytes long,
> -a fresh skbuff is allocated and the frame is copied to the new skbuff.
> -When the incoming frame is larger, the skbuff is passed directly up the
> -protocol stack. Buffers consumed this way are replaced by newly
> allocated
> -skbuffs in a later phase of receives.
> -
> -The RX_COPYBREAK value is chosen to trade-off the memory wasted by
> -using a full-sized skbuff for small frames vs. the copying costs of
> larger
> -frames. New boards are typically used in generously configured
> machines
> -and the underfilled buffers have negligible impact compared to the
> benefit of
> -a single allocation size, so the default value of zero results in never
> -copying packets. When copying is done, the cost is usually mitigated
> by using
> -a combined copy/checksum routine. Copying also preloads the cache,
> which is
> -most useful with small frames.
> -
> -A subtle aspect of the operation is that the IP header at offset 14 in
> an
> -ethernet frame isn't longword aligned for further processing.
> -Unaligned buffers are permitted by the Sundance hardware, so
> -frames are received into the skbuff at an offset of "+2", 16-byte
> aligning
> -the IP header.
> -
> -IIId. Synchronization
> -
> -The driver runs as two independent, single-threaded flows of control.
> One
> -is the send-packet routine, which enforces single-threaded use by the
> -dev->tbusy flag. The other thread is the interrupt handler, which is
> single
> -threaded by the hardware and interrupt handling software.
> -
> -The send packet thread has partial control over the Tx ring 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 'lp->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 'lp->tx_full' flag is
> set, it
> -clears both the tx_full and tbusy flags.
> -
> -IV. Notes
> -
> -IVb. References
> -
> -The Sundance ST201 datasheet, preliminary version.
> -The Kendin KS8723 datasheet, preliminary version.
> -The ICplus IP100 datasheet, preliminary version.
> -http://www.scyld.com/expert/100mbps.html
> -http://www.scyld.com/expert/NWay.html
> -
> -IVc. Errata
> -
> -*/
> -
> -/* Work-around for Kendin chip bugs. */
> -#ifndef CONFIG_SUNDANCE_MMIO
> -#define USE_IO_OPS 1
> -#endif
> -
> -static const struct pci_device_id sundance_pci_tbl[] = {
> - { 0x1186, 0x1002, 0x1186, 0x1002, 0, 0, 0 },
> - { 0x1186, 0x1002, 0x1186, 0x1003, 0, 0, 1 },
> - { 0x1186, 0x1002, 0x1186, 0x1012, 0, 0, 2 },
> - { 0x1186, 0x1002, 0x1186, 0x1040, 0, 0, 3 },
> - { 0x1186, 0x1002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
> - { 0x13F0, 0x0201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
> - { 0x13F0, 0x0200, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
> - { }
> -};
> -MODULE_DEVICE_TABLE(pci, sundance_pci_tbl);
> -
> -enum {
> - netdev_io_size = 128
> -};
> -
> -struct pci_id_info {
> - const char *name;
> -};
> -static const struct pci_id_info pci_id_tbl[] = {
> - {"D-Link DFE-550TX FAST Ethernet Adapter"},
> - {"D-Link DFE-550FX 100Mbps Fiber-optics Adapter"},
> - {"D-Link DFE-580TX 4 port Server Adapter"},
> - {"D-Link DFE-530TXS FAST Ethernet Adapter"},
> - {"D-Link DL10050-based FAST Ethernet Adapter"},
> - {"Sundance Technology Alta"},
> - {"IC Plus Corporation IP100A FAST Ethernet Adapter"},
> - { } /* terminate list. */
> -};
> -
> -/* This driver was written to use PCI memory space, however
> x86-oriented
> - hardware often uses I/O space accesses. */
> -
> -/* Offsets to the device registers.
> - Unlike software-only systems, device drivers interact with complex
> hardware.
> - It's not useful to define symbolic names for every register bit in
> the
> - device. The name can only partially document the semantics and make
> - the driver longer and more difficult to read.
> - In general, only the important configuration values or bits changed
> - multiple times should be defined symbolically.
> -*/
> -enum alta_offsets {
> - DMACtrl = 0x00,
> - TxListPtr = 0x04,
> - TxDMABurstThresh = 0x08,
> - TxDMAUrgentThresh = 0x09,
> - TxDMAPollPeriod = 0x0a,
> - RxDMAStatus = 0x0c,
> - RxListPtr = 0x10,
> - DebugCtrl0 = 0x1a,
> - DebugCtrl1 = 0x1c,
> - RxDMABurstThresh = 0x14,
> - RxDMAUrgentThresh = 0x15,
> - RxDMAPollPeriod = 0x16,
> - LEDCtrl = 0x1a,
> - ASICCtrl = 0x30,
> - EEData = 0x34,
> - EECtrl = 0x36,
> - FlashAddr = 0x40,
> - FlashData = 0x44,
> - WakeEvent = 0x45,
> - TxStatus = 0x46,
> - TxFrameId = 0x47,
> - DownCounter = 0x18,
> - IntrClear = 0x4a,
> - IntrEnable = 0x4c,
> - IntrStatus = 0x4e,
> - MACCtrl0 = 0x50,
> - MACCtrl1 = 0x52,
> - StationAddr = 0x54,
> - MaxFrameSize = 0x5A,
> - RxMode = 0x5c,
> - MIICtrl = 0x5e,
> - MulticastFilter0 = 0x60,
> - MulticastFilter1 = 0x64,
> - RxOctetsLow = 0x68,
> - RxOctetsHigh = 0x6a,
> - TxOctetsLow = 0x6c,
> - TxOctetsHigh = 0x6e,
> - TxFramesOK = 0x70,
> - RxFramesOK = 0x72,
> - StatsCarrierError = 0x74,
> - StatsLateColl = 0x75,
> - StatsMultiColl = 0x76,
> - StatsOneColl = 0x77,
> - StatsTxDefer = 0x78,
> - RxMissed = 0x79,
> - StatsTxXSDefer = 0x7a,
> - StatsTxAbort = 0x7b,
> - StatsBcastTx = 0x7c,
> - StatsBcastRx = 0x7d,
> - StatsMcastTx = 0x7e,
> - StatsMcastRx = 0x7f,
> - /* Aliased and bogus values! */
> - RxStatus = 0x0c,
> -};
> -
> -#define ASIC_HI_WORD(x) ((x) + 2)
> -
> -enum ASICCtrl_HiWord_bit {
> - GlobalReset = 0x0001,
> - RxReset = 0x0002,
> - TxReset = 0x0004,
> - DMAReset = 0x0008,
> - FIFOReset = 0x0010,
> - NetworkReset = 0x0020,
> - HostReset = 0x0040,
> - ResetBusy = 0x0400,
> -};
> -
> -/* Bits in the interrupt status/mask registers. */
> -enum intr_status_bits {
> - IntrSummary=0x0001, IntrPCIErr=0x0002, IntrMACCtrl=0x0008,
> - IntrTxDone=0x0004, IntrRxDone=0x0010, IntrRxStart=0x0020,
> - IntrDrvRqst=0x0040,
> - StatsMax=0x0080, LinkChange=0x0100,
> - IntrTxDMADone=0x0200, IntrRxDMADone=0x0400,
> -};
> -
> -/* Bits in the RxMode register. */
> -enum rx_mode_bits {
> - AcceptAllIPMulti=0x20, AcceptMultiHash=0x10, AcceptAll=0x08,
> - AcceptBroadcast=0x04, AcceptMulticast=0x02, AcceptMyPhys=0x01,
> -};
> -/* Bits in MACCtrl. */
> -enum mac_ctrl0_bits {
> - EnbFullDuplex=0x20, EnbRcvLargeFrame=0x40,
> - EnbFlowCtrl=0x100, EnbPassRxCRC=0x200,
> -};
> -enum mac_ctrl1_bits {
> - StatsEnable=0x0020, StatsDisable=0x0040, StatsEnabled=0x0080,
> - TxEnable=0x0100, TxDisable=0x0200, TxEnabled=0x0400,
> - RxEnable=0x0800, RxDisable=0x1000, RxEnabled=0x2000,
> -};
> -
> -/* Bits in WakeEvent register. */
> -enum wake_event_bits {
> - WakePktEnable = 0x01,
> - MagicPktEnable = 0x02,
> - LinkEventEnable = 0x04,
> - WolEnable = 0x80,
> -};
> -
> -/* The Rx and Tx buffer descriptors. */
> -/* Note that using only 32 bit fields simplifies conversion to
> big-endian
> - architectures. */
> -struct netdev_desc {
> - __le32 next_desc;
> - __le32 status;
> - struct desc_frag { __le32 addr, length; } frag;
> -};
> -
> -/* Bits in netdev_desc.status */
> -enum desc_status_bits {
> - DescOwn=0x8000,
> - DescEndPacket=0x4000,
> - DescEndRing=0x2000,
> - LastFrag=0x80000000,
> - DescIntrOnTx=0x8000,
> - DescIntrOnDMADone=0x80000000,
> - DisableAlign = 0x00000001,
> -};
> -
> -#define PRIV_ALIGN 15 /* Required alignment mask */
> -/* Use __attribute__((aligned (L1_CACHE_BYTES))) to maintain
> alignment
> - within the structure. */
> -#define MII_CNT 4
> -struct netdev_private {
> - /* Descriptor rings first for alignment. */
> - struct netdev_desc *rx_ring;
> - struct netdev_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 monitoring timer. */
> - struct net_device *ndev; /* backpointer */
> - /* ethtool extra stats */
> - struct {
> - u64 tx_multiple_collisions;
> - u64 tx_single_collisions;
> - u64 tx_late_collisions;
> - u64 tx_deferred;
> - u64 tx_deferred_excessive;
> - u64 tx_aborted;
> - u64 tx_bcasts;
> - u64 rx_bcasts;
> - u64 tx_mcasts;
> - u64 rx_mcasts;
> - } xstats;
> - /* Frequently used values: keep some adjacent for cache effect. */
> - spinlock_t lock;
> - int msg_enable;
> - int chip_id;
> - unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */
> - unsigned int rx_buf_sz; /* Based on MTU+slack. */
> - struct netdev_desc *last_tx; /* Last Tx descriptor used. */
> - unsigned int cur_tx, dirty_tx;
> - /* These values are keep track of the transceiver/media in use. */
> - unsigned int flowctrl:1;
> - unsigned int default_port:4; /* Last dev->if_port value. */
> - unsigned int an_enable:1;
> - unsigned int speed;
> - unsigned int wol_enabled:1; /* Wake on LAN enabled */
> - struct tasklet_struct rx_tasklet;
> - struct tasklet_struct tx_tasklet;
> - int budget;
> - int cur_task;
> - /* Multicast and receive mode. */
> - spinlock_t mcastlock; /* SMP lock multicast updates. */
> - u16 mcast_filter[4];
> - /* MII transceiver section. */
> - struct mii_if_info mii_if;
> - int mii_preamble_required;
> - unsigned char phys[MII_CNT]; /* MII device addresses, only first one
> used. */
> - struct pci_dev *pci_dev;
> - void __iomem *base;
> - spinlock_t statlock;
> -};
> -
> -/* The station address location in the EEPROM. */
> -#define EEPROM_SA_OFFSET 0x10
> -#define DEFAULT_INTR (IntrRxDMADone | IntrPCIErr | \
> - IntrDrvRqst | IntrTxDone | StatsMax | \
> - LinkChange)
> -
> -static int change_mtu(struct net_device *dev, int new_mtu);
> -static int eeprom_read(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 mdio_wait_link(struct net_device *dev, int wait);
> -static int netdev_open(struct net_device *dev);
> -static void check_duplex(struct net_device *dev);
> -static void netdev_timer(struct timer_list *t);
> -static void tx_timeout(struct net_device *dev, unsigned int txqueue);
> -static void init_ring(struct net_device *dev);
> -static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device
> *dev);
> -static int reset_tx (struct net_device *dev);
> -static irqreturn_t intr_handler(int irq, void *dev_instance);
> -static void rx_poll(struct tasklet_struct *t);
> -static void tx_poll(struct tasklet_struct *t);
> -static void refill_rx (struct net_device *dev);
> -static void netdev_error(struct net_device *dev, int intr_status);
> -static void netdev_error(struct net_device *dev, int intr_status);
> -static void set_rx_mode(struct net_device *dev);
> -static int __set_mac_addr(struct net_device *dev);
> -static int sundance_set_mac_addr(struct net_device *dev, void *data);
> -static struct net_device_stats *get_stats(struct net_device *dev);
> -static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int
> cmd);
> -static int netdev_close(struct net_device *dev);
> -static const struct ethtool_ops ethtool_ops;
> -
> -static void sundance_reset(struct net_device *dev, unsigned long
> reset_cmd)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base + ASICCtrl;
> - int countdown;
> -
> - /* ST201 documentation states ASICCtrl is a 32bit register */
> - iowrite32 (reset_cmd | ioread32 (ioaddr), ioaddr);
> - /* ST201 documentation states reset can take up to 1 ms */
> - countdown = 10 + 1;
> - while (ioread32 (ioaddr) & (ResetBusy << 16)) {
> - if (--countdown == 0) {
> - printk(KERN_WARNING "%s : reset not completed !!\n", dev->name);
> - break;
> - }
> - udelay(100);
> - }
> -}
> -
> -#ifdef CONFIG_NET_POLL_CONTROLLER
> -static void sundance_poll_controller(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> -
> - disable_irq(np->pci_dev->irq);
> - intr_handler(np->pci_dev->irq, dev);
> - enable_irq(np->pci_dev->irq);
> -}
> -#endif
> -
> -static const struct net_device_ops netdev_ops = {
> - .ndo_open = netdev_open,
> - .ndo_stop = netdev_close,
> - .ndo_start_xmit = start_tx,
> - .ndo_get_stats = get_stats,
> - .ndo_set_rx_mode = set_rx_mode,
> - .ndo_eth_ioctl = netdev_ioctl,
> - .ndo_tx_timeout = tx_timeout,
> - .ndo_change_mtu = change_mtu,
> - .ndo_set_mac_address = sundance_set_mac_addr,
> - .ndo_validate_addr = eth_validate_addr,
> -#ifdef CONFIG_NET_POLL_CONTROLLER
> - .ndo_poll_controller = sundance_poll_controller,
> -#endif
> -};
> -
> -static int sundance_probe1(struct pci_dev *pdev,
> - const struct pci_device_id *ent)
> -{
> - struct net_device *dev;
> - struct netdev_private *np;
> - static int card_idx;
> - int chip_idx = ent->driver_data;
> - int irq;
> - int i;
> - void __iomem *ioaddr;
> - u16 mii_ctl;
> - void *ring_space;
> - dma_addr_t ring_dma;
> -#ifdef USE_IO_OPS
> - int bar = 0;
> -#else
> - int bar = 1;
> -#endif
> - int phy, phy_end, phy_idx = 0;
> - __le16 addr[ETH_ALEN / 2];
> -
> - if (pci_enable_device(pdev))
> - return -EIO;
> - pci_set_master(pdev);
> -
> - irq = pdev->irq;
> -
> - dev = alloc_etherdev(sizeof(*np));
> - if (!dev)
> - return -ENOMEM;
> - SET_NETDEV_DEV(dev, &pdev->dev);
> -
> - if (pci_request_regions(pdev, DRV_NAME))
> - goto err_out_netdev;
> -
> - ioaddr = pci_iomap(pdev, bar, netdev_io_size);
> - if (!ioaddr)
> - goto err_out_res;
> -
> - for (i = 0; i < 3; i++)
> - addr[i] =
> - cpu_to_le16(eeprom_read(ioaddr, i + EEPROM_SA_OFFSET));
> - eth_hw_addr_set(dev, (u8 *)addr);
> -
> - np = netdev_priv(dev);
> - np->ndev = dev;
> - np->base = ioaddr;
> - np->pci_dev = pdev;
> - np->chip_id = chip_idx;
> - np->msg_enable = (1 << debug) - 1;
> - spin_lock_init(&np->lock);
> - spin_lock_init(&np->statlock);
> - tasklet_setup(&np->rx_tasklet, rx_poll);
> - tasklet_setup(&np->tx_tasklet, tx_poll);
> -
> - ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE,
> - &ring_dma, GFP_KERNEL);
> - if (!ring_space)
> - goto err_out_cleardev;
> - np->tx_ring = (struct netdev_desc *)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 = (struct netdev_desc *)ring_space;
> - np->rx_ring_dma = ring_dma;
> -
> - np->mii_if.dev = dev;
> - np->mii_if.mdio_read = mdio_read;
> - np->mii_if.mdio_write = mdio_write;
> - np->mii_if.phy_id_mask = 0x1f;
> - np->mii_if.reg_num_mask = 0x1f;
> -
> - /* The chip-specific entries in the device structure. */
> - dev->netdev_ops = &netdev_ops;
> - dev->ethtool_ops = ðtool_ops;
> - dev->watchdog_timeo = TX_TIMEOUT;
> -
> - /* MTU range: 68 - 8191 */
> - dev->min_mtu = ETH_MIN_MTU;
> - dev->max_mtu = 8191;
> -
> - pci_set_drvdata(pdev, dev);
> -
> - i = register_netdev(dev);
> - if (i)
> - goto err_out_unmap_rx;
> -
> - printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n",
> - dev->name, pci_id_tbl[chip_idx].name, ioaddr,
> - dev->dev_addr, irq);
> -
> - np->phys[0] = 1; /* Default setting */
> - np->mii_preamble_required++;
> -
> - /*
> - * It seems some phys doesn't deal well with address 0 being accessed
> - * first
> - */
> - if (sundance_pci_tbl[np->chip_id].device == 0x0200) {
> - phy = 0;
> - phy_end = 31;
> - } else {
> - phy = 1;
> - phy_end = 32; /* wraps to zero, due to 'phy & 0x1f' */
> - }
> - for (; phy <= phy_end && phy_idx < MII_CNT; phy++) {
> - int phyx = phy & 0x1f;
> - int mii_status = mdio_read(dev, phyx, MII_BMSR);
> - if (mii_status != 0xffff && mii_status != 0x0000) {
> - np->phys[phy_idx++] = phyx;
> - np->mii_if.advertising = mdio_read(dev, phyx, MII_ADVERTISE);
> - if ((mii_status & 0x0040) == 0)
> - np->mii_preamble_required++;
> - printk(KERN_INFO "%s: MII PHY found at address %d, status "
> - "0x%4.4x advertising %4.4x.\n",
> - dev->name, phyx, mii_status, np->mii_if.advertising);
> - }
> - }
> - np->mii_preamble_required--;
> -
> - if (phy_idx == 0) {
> - printk(KERN_INFO "%s: No MII transceiver found, aborting. ASIC
> status %x\n",
> - dev->name, ioread32(ioaddr + ASICCtrl));
> - goto err_out_unregister;
> - }
> -
> - np->mii_if.phy_id = np->phys[0];
> -
> - /* Parse override configuration */
> - np->an_enable = 1;
> - if (card_idx < MAX_UNITS) {
> - if (media[card_idx] != NULL) {
> - np->an_enable = 0;
> - if (strcmp (media[card_idx], "100mbps_fd") == 0 ||
> - strcmp (media[card_idx], "4") == 0) {
> - np->speed = 100;
> - np->mii_if.full_duplex = 1;
> - } else if (strcmp (media[card_idx], "100mbps_hd") == 0 ||
> - strcmp (media[card_idx], "3") == 0) {
> - np->speed = 100;
> - np->mii_if.full_duplex = 0;
> - } else if (strcmp (media[card_idx], "10mbps_fd") == 0 ||
> - strcmp (media[card_idx], "2") == 0) {
> - np->speed = 10;
> - np->mii_if.full_duplex = 1;
> - } else if (strcmp (media[card_idx], "10mbps_hd") == 0 ||
> - strcmp (media[card_idx], "1") == 0) {
> - np->speed = 10;
> - np->mii_if.full_duplex = 0;
> - } else {
> - np->an_enable = 1;
> - }
> - }
> - if (flowctrl == 1)
> - np->flowctrl = 1;
> - }
> -
> - /* Fibre PHY? */
> - if (ioread32 (ioaddr + ASICCtrl) & 0x80) {
> - /* Default 100Mbps Full */
> - if (np->an_enable) {
> - np->speed = 100;
> - np->mii_if.full_duplex = 1;
> - np->an_enable = 0;
> - }
> - }
> - /* Reset PHY */
> - mdio_write (dev, np->phys[0], MII_BMCR, BMCR_RESET);
> - mdelay (300);
> - /* If flow control enabled, we need to advertise it.*/
> - if (np->flowctrl)
> - mdio_write (dev, np->phys[0], MII_ADVERTISE, np->mii_if.advertising
> | 0x0400);
> - mdio_write (dev, np->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART);
> - /* Force media type */
> - if (!np->an_enable) {
> - mii_ctl = 0;
> - mii_ctl |= (np->speed == 100) ? BMCR_SPEED100 : 0;
> - mii_ctl |= (np->mii_if.full_duplex) ? BMCR_FULLDPLX : 0;
> - mdio_write (dev, np->phys[0], MII_BMCR, mii_ctl);
> - printk (KERN_INFO "Override speed=%d, %s duplex\n",
> - np->speed, np->mii_if.full_duplex ? "Full" : "Half");
> -
> - }
> -
> - /* Perhaps move the reset here? */
> - /* Reset the chip to erase previous misconfiguration. */
> - if (netif_msg_hw(np))
> - printk("ASIC Control is %x.\n", ioread32(ioaddr + ASICCtrl));
> - sundance_reset(dev, 0x00ff << 16);
> - if (netif_msg_hw(np))
> - printk("ASIC Control is now %x.\n", ioread32(ioaddr + ASICCtrl));
> -
> - card_idx++;
> - return 0;
> -
> -err_out_unregister:
> - unregister_netdev(dev);
> -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_res:
> - pci_release_regions(pdev);
> -err_out_netdev:
> - free_netdev (dev);
> - return -ENODEV;
> -}
> -
> -static int change_mtu(struct net_device *dev, int new_mtu)
> -{
> - if (netif_running(dev))
> - return -EBUSY;
> - WRITE_ONCE(dev->mtu, new_mtu);
> - return 0;
> -}
> -
> -#define eeprom_delay(ee_addr) ioread32(ee_addr)
> -/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. */
> -static int eeprom_read(void __iomem *ioaddr, int location)
> -{
> - int boguscnt = 10000; /* Typical 1900 ticks. */
> - iowrite16(0x0200 | (location & 0xff), ioaddr + EECtrl);
> - do {
> - eeprom_delay(ioaddr + EECtrl);
> - if (! (ioread16(ioaddr + EECtrl) & 0x8000)) {
> - return ioread16(ioaddr + EEData);
> - }
> - } while (--boguscnt > 0);
> - return 0;
> -}
> -
> -/* MII transceiver control section.
> - Read and write the MII registers using software-generated serial
> - MDIO protocol. See the MII specifications or DP83840A data sheet
> - for details.
> -
> - The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
> - met by back-to-back 33Mhz PCI cycles. */
> -#define mdio_delay() ioread8(mdio_addr)
> -
> -enum mii_reg_bits {
> - MDIO_ShiftClk=0x0001, MDIO_Data=0x0002, MDIO_EnbOutput=0x0004,
> -};
> -#define MDIO_EnbIn (0)
> -#define MDIO_WRITE0 (MDIO_EnbOutput)
> -#define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput)
> -
> -/* Generate the preamble required for initial synchronization and
> - a few older transceivers. */
> -static void mdio_sync(void __iomem *mdio_addr)
> -{
> - int bits = 32;
> -
> - /* Establish sync by sending at least 32 logic ones. */
> - while (--bits >= 0) {
> - iowrite8(MDIO_WRITE1, mdio_addr);
> - mdio_delay();
> - iowrite8(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr);
> - mdio_delay();
> - }
> -}
> -
> -static int mdio_read(struct net_device *dev, int phy_id, int location)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *mdio_addr = np->base + MIICtrl;
> - int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
> - int i, retval = 0;
> -
> - if (np->mii_preamble_required)
> - mdio_sync(mdio_addr);
> -
> - /* Shift the read command bits out. */
> - for (i = 15; i >= 0; i--) {
> - int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
> -
> - iowrite8(dataval, mdio_addr);
> - mdio_delay();
> - iowrite8(dataval | MDIO_ShiftClk, mdio_addr);
> - mdio_delay();
> - }
> - /* Read the two transition, 16 data, and wire-idle bits. */
> - for (i = 19; i > 0; i--) {
> - iowrite8(MDIO_EnbIn, mdio_addr);
> - mdio_delay();
> - retval = (retval << 1) | ((ioread8(mdio_addr) & MDIO_Data) ? 1 : 0);
> - iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
> - mdio_delay();
> - }
> - return (retval>>1) & 0xffff;
> -}
> -
> -static void mdio_write(struct net_device *dev, int phy_id, int
> location, int value)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *mdio_addr = np->base + MIICtrl;
> - int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) |
> value;
> - int i;
> -
> - if (np->mii_preamble_required)
> - mdio_sync(mdio_addr);
> -
> - /* Shift the command bits out. */
> - for (i = 31; i >= 0; i--) {
> - int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
> -
> - iowrite8(dataval, mdio_addr);
> - mdio_delay();
> - iowrite8(dataval | MDIO_ShiftClk, mdio_addr);
> - mdio_delay();
> - }
> - /* Clear out extra bits. */
> - for (i = 2; i > 0; i--) {
> - iowrite8(MDIO_EnbIn, mdio_addr);
> - mdio_delay();
> - iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
> - mdio_delay();
> - }
> -}
> -
> -static int mdio_wait_link(struct net_device *dev, int wait)
> -{
> - int bmsr;
> - int phy_id;
> - struct netdev_private *np;
> -
> - np = netdev_priv(dev);
> - phy_id = np->phys[0];
> -
> - do {
> - bmsr = mdio_read(dev, phy_id, MII_BMSR);
> - if (bmsr & 0x0004)
> - return 0;
> - mdelay(1);
> - } while (--wait > 0);
> - return -1;
> -}
> -
> -static int netdev_open(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - const int irq = np->pci_dev->irq;
> - unsigned long flags;
> - int i;
> -
> - sundance_reset(dev, 0x00ff << 16);
> -
> - i = request_irq(irq, intr_handler, IRQF_SHARED, dev->name, dev);
> - if (i)
> - return i;
> -
> - if (netif_msg_ifup(np))
> - printk(KERN_DEBUG "%s: netdev_open() irq %d\n", dev->name, irq);
> -
> - init_ring(dev);
> -
> - iowrite32(np->rx_ring_dma, ioaddr + RxListPtr);
> - /* The Tx list pointer is written as packets are queued. */
> -
> - /* Initialize other registers. */
> - __set_mac_addr(dev);
> -#if IS_ENABLED(CONFIG_VLAN_8021Q)
> - iowrite16(dev->mtu + 18, ioaddr + MaxFrameSize);
> -#else
> - iowrite16(dev->mtu + 14, ioaddr + MaxFrameSize);
> -#endif
> - if (dev->mtu > 2047)
> - iowrite32(ioread32(ioaddr + ASICCtrl) | 0x0C, ioaddr + ASICCtrl);
> -
> - /* Configure the PCI bus bursts and FIFO thresholds. */
> -
> - if (dev->if_port == 0)
> - dev->if_port = np->default_port;
> -
> - spin_lock_init(&np->mcastlock);
> -
> - set_rx_mode(dev);
> - iowrite16(0, ioaddr + IntrEnable);
> - iowrite16(0, ioaddr + DownCounter);
> - /* Set the chip to poll every N*320nsec. */
> - iowrite8(100, ioaddr + RxDMAPollPeriod);
> - iowrite8(127, ioaddr + TxDMAPollPeriod);
> - /* Fix DFE-580TX packet drop issue */
> - if (np->pci_dev->revision >= 0x14)
> - iowrite8(0x01, ioaddr + DebugCtrl1);
> - netif_start_queue(dev);
> -
> - spin_lock_irqsave(&np->lock, flags);
> - reset_tx(dev);
> - spin_unlock_irqrestore(&np->lock, flags);
> -
> - iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
> -
> - /* Disable Wol */
> - iowrite8(ioread8(ioaddr + WakeEvent) | 0x00, ioaddr + WakeEvent);
> - np->wol_enabled = 0;
> -
> - if (netif_msg_ifup(np))
> - printk(KERN_DEBUG "%s: Done netdev_open(), status: Rx %x Tx %x "
> - "MAC Control %x, %4.4x %4.4x.\n",
> - dev->name, ioread32(ioaddr + RxStatus), ioread8(ioaddr +
> TxStatus),
> - ioread32(ioaddr + MACCtrl0),
> - ioread16(ioaddr + MACCtrl1), ioread16(ioaddr + MACCtrl0));
> -
> - /* Set the timer to check for link beat. */
> - timer_setup(&np->timer, netdev_timer, 0);
> - np->timer.expires = jiffies + 3*HZ;
> - add_timer(&np->timer);
> -
> - /* Enable interrupts by setting the interrupt mask. */
> - iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
> -
> - return 0;
> -}
> -
> -static void check_duplex(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - int mii_lpa = mdio_read(dev, np->phys[0], MII_LPA);
> - int negotiated = mii_lpa & np->mii_if.advertising;
> - int duplex;
> -
> - /* Force media */
> - if (!np->an_enable || mii_lpa == 0xffff) {
> - if (np->mii_if.full_duplex)
> - iowrite16 (ioread16 (ioaddr + MACCtrl0) | EnbFullDuplex,
> - ioaddr + MACCtrl0);
> - return;
> - }
> -
> - /* Autonegotiation */
> - duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040;
> - if (np->mii_if.full_duplex != duplex) {
> - np->mii_if.full_duplex = duplex;
> - if (netif_msg_link(np))
> - printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d "
> - "negotiated capability %4.4x.\n", dev->name,
> - duplex ? "full" : "half", np->phys[0], negotiated);
> - iowrite16(ioread16(ioaddr + MACCtrl0) | (duplex ? 0x20 : 0), ioaddr
> + MACCtrl0);
> - }
> -}
> -
> -static void netdev_timer(struct timer_list *t)
> -{
> - struct netdev_private *np = from_timer(np, t, timer);
> - struct net_device *dev = np->mii_if.dev;
> - void __iomem *ioaddr = np->base;
> - int next_tick = 10*HZ;
> -
> - if (netif_msg_timer(np)) {
> - printk(KERN_DEBUG "%s: Media selection timer tick, intr status
> %4.4x, "
> - "Tx %x Rx %x.\n",
> - dev->name, ioread16(ioaddr + IntrEnable),
> - ioread8(ioaddr + TxStatus), ioread32(ioaddr + RxStatus));
> - }
> - check_duplex(dev);
> - np->timer.expires = jiffies + next_tick;
> - add_timer(&np->timer);
> -}
> -
> -static void tx_timeout(struct net_device *dev, unsigned int txqueue)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - unsigned long flag;
> -
> - netif_stop_queue(dev);
> - tasklet_disable_in_atomic(&np->tx_tasklet);
> - iowrite16(0, ioaddr + IntrEnable);
> - printk(KERN_WARNING "%s: Transmit timed out, TxStatus %2.2x "
> - "TxFrameId %2.2x,"
> - " resetting...\n", dev->name, ioread8(ioaddr + TxStatus),
> - ioread8(ioaddr + TxFrameId));
> -
> - {
> - int i;
> - for (i=0; i<TX_RING_SIZE; i++) {
> - printk(KERN_DEBUG "%02x %08llx %08x %08x(%02x) %08x %08x\n", i,
> - (unsigned long long)(np->tx_ring_dma + i*sizeof(*np->tx_ring)),
> - le32_to_cpu(np->tx_ring[i].next_desc),
> - le32_to_cpu(np->tx_ring[i].status),
> - (le32_to_cpu(np->tx_ring[i].status) >> 2) & 0xff,
> - le32_to_cpu(np->tx_ring[i].frag.addr),
> - le32_to_cpu(np->tx_ring[i].frag.length));
> - }
> - printk(KERN_DEBUG "TxListPtr=%08x netif_queue_stopped=%d\n",
> - ioread32(np->base + TxListPtr),
> - netif_queue_stopped(dev));
> - printk(KERN_DEBUG "cur_tx=%d(%02x) dirty_tx=%d(%02x)\n",
> - np->cur_tx, np->cur_tx % TX_RING_SIZE,
> - np->dirty_tx, np->dirty_tx % TX_RING_SIZE);
> - printk(KERN_DEBUG "cur_rx=%d dirty_rx=%d\n", np->cur_rx,
> np->dirty_rx);
> - printk(KERN_DEBUG "cur_task=%d\n", np->cur_task);
> - }
> - spin_lock_irqsave(&np->lock, flag);
> -
> - /* Stop and restart the chip's Tx processes . */
> - reset_tx(dev);
> - spin_unlock_irqrestore(&np->lock, flag);
> -
> - dev->if_port = 0;
> -
> - netif_trans_update(dev); /* prevent tx timeout */
> - dev->stats.tx_errors++;
> - if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
> - netif_wake_queue(dev);
> - }
> - iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
> - tasklet_enable(&np->tx_tasklet);
> -}
> -
> -
> -/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
> -static void init_ring(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - int i;
> -
> - np->cur_rx = np->cur_tx = 0;
> - np->dirty_rx = np->dirty_tx = 0;
> - np->cur_task = 0;
> -
> - np->rx_buf_sz = (dev->mtu <= 1520 ? PKT_BUF_SZ : dev->mtu + 16);
> -
> - /* Initialize all Rx descriptors. */
> - for (i = 0; i < RX_RING_SIZE; i++) {
> - np->rx_ring[i].next_desc = cpu_to_le32(np->rx_ring_dma +
> - ((i+1)%RX_RING_SIZE)*sizeof(*np->rx_ring));
> - np->rx_ring[i].status = 0;
> - np->rx_ring[i].frag.length = 0;
> - np->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, np->rx_buf_sz + 2);
> - np->rx_skbuff[i] = skb;
> - if (skb == NULL)
> - break;
> - skb_reserve(skb, 2); /* 16 byte align the IP header. */
> - np->rx_ring[i].frag.addr = cpu_to_le32(
> - dma_map_single(&np->pci_dev->dev, skb->data,
> - np->rx_buf_sz, DMA_FROM_DEVICE));
> - if (dma_mapping_error(&np->pci_dev->dev,
> - np->rx_ring[i].frag.addr)) {
> - dev_kfree_skb(skb);
> - np->rx_skbuff[i] = NULL;
> - break;
> - }
> - np->rx_ring[i].frag.length = cpu_to_le32(np->rx_buf_sz | LastFrag);
> - }
> - np->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
> -
> - for (i = 0; i < TX_RING_SIZE; i++) {
> - np->tx_skbuff[i] = NULL;
> - np->tx_ring[i].status = 0;
> - }
> -}
> -
> -static void tx_poll(struct tasklet_struct *t)
> -{
> - struct netdev_private *np = from_tasklet(np, t, tx_tasklet);
> - unsigned head = np->cur_task % TX_RING_SIZE;
> - struct netdev_desc *txdesc =
> - &np->tx_ring[(np->cur_tx - 1) % TX_RING_SIZE];
> -
> - /* Chain the next pointer */
> - for (; np->cur_tx - np->cur_task > 0; np->cur_task++) {
> - int entry = np->cur_task % TX_RING_SIZE;
> - txdesc = &np->tx_ring[entry];
> - if (np->last_tx) {
> - np->last_tx->next_desc = cpu_to_le32(np->tx_ring_dma +
> - entry*sizeof(struct netdev_desc));
> - }
> - np->last_tx = txdesc;
> - }
> - /* Indicate the latest descriptor of tx ring */
> - txdesc->status |= cpu_to_le32(DescIntrOnTx);
> -
> - if (ioread32 (np->base + TxListPtr) == 0)
> - iowrite32 (np->tx_ring_dma + head * sizeof(struct netdev_desc),
> - np->base + TxListPtr);
> -}
> -
> -static netdev_tx_t
> -start_tx (struct sk_buff *skb, struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - struct netdev_desc *txdesc;
> - unsigned entry;
> -
> - /* Calculate the next Tx descriptor entry. */
> - entry = np->cur_tx % TX_RING_SIZE;
> - np->tx_skbuff[entry] = skb;
> - txdesc = &np->tx_ring[entry];
> -
> - txdesc->next_desc = 0;
> - txdesc->status = cpu_to_le32 ((entry << 2) | DisableAlign);
> - txdesc->frag.addr = cpu_to_le32(dma_map_single(&np->pci_dev->dev,
> - skb->data, skb->len, DMA_TO_DEVICE));
> - if (dma_mapping_error(&np->pci_dev->dev,
> - txdesc->frag.addr))
> - goto drop_frame;
> - txdesc->frag.length = cpu_to_le32 (skb->len | LastFrag);
> -
> - /* Increment cur_tx before tasklet_schedule() */
> - np->cur_tx++;
> - mb();
> - /* Schedule a tx_poll() task */
> - tasklet_schedule(&np->tx_tasklet);
> -
> - /* On some architectures: explicitly flush cache lines here. */
> - if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 1 &&
> - !netif_queue_stopped(dev)) {
> - /* do nothing */
> - } else {
> - netif_stop_queue (dev);
> - }
> - if (netif_msg_tx_queued(np)) {
> - printk (KERN_DEBUG
> - "%s: Transmit frame #%d queued in slot %d.\n",
> - dev->name, np->cur_tx, entry);
> - }
> - return NETDEV_TX_OK;
> -
> -drop_frame:
> - dev_kfree_skb_any(skb);
> - np->tx_skbuff[entry] = NULL;
> - dev->stats.tx_dropped++;
> - return NETDEV_TX_OK;
> -}
> -
> -/* Reset hardware tx and free all of tx buffers */
> -static int
> -reset_tx (struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - struct sk_buff *skb;
> - int i;
> -
> - /* Reset tx logic, TxListPtr will be cleaned */
> - iowrite16 (TxDisable, ioaddr + MACCtrl1);
> - sundance_reset(dev, (NetworkReset|FIFOReset|DMAReset|TxReset) << 16);
> -
> - /* free all tx skbuff */
> - for (i = 0; i < TX_RING_SIZE; i++) {
> - np->tx_ring[i].next_desc = 0;
> -
> - skb = np->tx_skbuff[i];
> - if (skb) {
> - dma_unmap_single(&np->pci_dev->dev,
> - le32_to_cpu(np->tx_ring[i].frag.addr),
> - skb->len, DMA_TO_DEVICE);
> - dev_kfree_skb_any(skb);
> - np->tx_skbuff[i] = NULL;
> - dev->stats.tx_dropped++;
> - }
> - }
> - np->cur_tx = np->dirty_tx = 0;
> - np->cur_task = 0;
> -
> - np->last_tx = NULL;
> - iowrite8(127, ioaddr + TxDMAPollPeriod);
> -
> - iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
> - return 0;
> -}
> -
> -/* The interrupt handler cleans up after the Tx thread,
> - and schedule a Rx thread work */
> -static irqreturn_t intr_handler(int irq, void *dev_instance)
> -{
> - struct net_device *dev = (struct net_device *)dev_instance;
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - int hw_frame_id;
> - int tx_cnt;
> - int tx_status;
> - int handled = 0;
> - int i;
> -
> - do {
> - int intr_status = ioread16(ioaddr + IntrStatus);
> - iowrite16(intr_status, ioaddr + IntrStatus);
> -
> - if (netif_msg_intr(np))
> - printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n",
> - dev->name, intr_status);
> -
> - if (!(intr_status & DEFAULT_INTR))
> - break;
> -
> - handled = 1;
> -
> - if (intr_status & (IntrRxDMADone)) {
> - iowrite16(DEFAULT_INTR & ~(IntrRxDone|IntrRxDMADone),
> - ioaddr + IntrEnable);
> - if (np->budget < 0)
> - np->budget = RX_BUDGET;
> - tasklet_schedule(&np->rx_tasklet);
> - }
> - if (intr_status & (IntrTxDone | IntrDrvRqst)) {
> - tx_status = ioread16 (ioaddr + TxStatus);
> - for (tx_cnt=32; tx_status & 0x80; --tx_cnt) {
> - if (netif_msg_tx_done(np))
> - printk
> - ("%s: Transmit status is %2.2x.\n",
> - dev->name, tx_status);
> - if (tx_status & 0x1e) {
> - if (netif_msg_tx_err(np))
> - printk("%s: Transmit error status %4.4x.\n",
> - dev->name, tx_status);
> - dev->stats.tx_errors++;
> - if (tx_status & 0x10)
> - dev->stats.tx_fifo_errors++;
> - if (tx_status & 0x08)
> - dev->stats.collisions++;
> - if (tx_status & 0x04)
> - dev->stats.tx_fifo_errors++;
> - if (tx_status & 0x02)
> - dev->stats.tx_window_errors++;
> -
> - /*
> - ** This reset has been verified on
> - ** DFE-580TX boards ! phdm@...qel.be.
> - */
> - if (tx_status & 0x10) { /* TxUnderrun */
> - /* Restart Tx FIFO and transmitter */
> - sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16);
> - /* No need to reset the Tx pointer here */
> - }
> - /* Restart the Tx. Need to make sure tx enabled */
> - i = 10;
> - do {
> - iowrite16(ioread16(ioaddr + MACCtrl1) | TxEnable, ioaddr +
> MACCtrl1);
> - if (ioread16(ioaddr + MACCtrl1) & TxEnabled)
> - break;
> - mdelay(1);
> - } while (--i);
> - }
> - /* Yup, this is a documentation bug. It cost me *hours*. */
> - iowrite16 (0, ioaddr + TxStatus);
> - if (tx_cnt < 0) {
> - iowrite32(5000, ioaddr + DownCounter);
> - break;
> - }
> - tx_status = ioread16 (ioaddr + TxStatus);
> - }
> - hw_frame_id = (tx_status >> 8) & 0xff;
> - } else {
> - hw_frame_id = ioread8(ioaddr + TxFrameId);
> - }
> -
> - if (np->pci_dev->revision >= 0x14) {
> - spin_lock(&np->lock);
> - for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
> - int entry = np->dirty_tx % TX_RING_SIZE;
> - struct sk_buff *skb;
> - int sw_frame_id;
> - sw_frame_id = (le32_to_cpu(
> - np->tx_ring[entry].status) >> 2) & 0xff;
> - if (sw_frame_id == hw_frame_id &&
> - !(le32_to_cpu(np->tx_ring[entry].status)
> - & 0x00010000))
> - break;
> - if (sw_frame_id == (hw_frame_id + 1) %
> - TX_RING_SIZE)
> - break;
> - skb = np->tx_skbuff[entry];
> - /* Free the original skb. */
> - dma_unmap_single(&np->pci_dev->dev,
> - le32_to_cpu(np->tx_ring[entry].frag.addr),
> - skb->len, DMA_TO_DEVICE);
> - dev_consume_skb_irq(np->tx_skbuff[entry]);
> - np->tx_skbuff[entry] = NULL;
> - np->tx_ring[entry].frag.addr = 0;
> - np->tx_ring[entry].frag.length = 0;
> - }
> - spin_unlock(&np->lock);
> - } else {
> - spin_lock(&np->lock);
> - for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
> - int entry = np->dirty_tx % TX_RING_SIZE;
> - struct sk_buff *skb;
> - if (!(le32_to_cpu(np->tx_ring[entry].status)
> - & 0x00010000))
> - break;
> - skb = np->tx_skbuff[entry];
> - /* Free the original skb. */
> - dma_unmap_single(&np->pci_dev->dev,
> - le32_to_cpu(np->tx_ring[entry].frag.addr),
> - skb->len, DMA_TO_DEVICE);
> - dev_consume_skb_irq(np->tx_skbuff[entry]);
> - np->tx_skbuff[entry] = NULL;
> - np->tx_ring[entry].frag.addr = 0;
> - np->tx_ring[entry].frag.length = 0;
> - }
> - spin_unlock(&np->lock);
> - }
> -
> - if (netif_queue_stopped(dev) &&
> - np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
> - /* The ring is no longer full, clear busy flag. */
> - netif_wake_queue (dev);
> - }
> - /* Abnormal error summary/uncommon events handlers. */
> - if (intr_status & (IntrPCIErr | LinkChange | StatsMax))
> - netdev_error(dev, intr_status);
> - } while (0);
> - if (netif_msg_intr(np))
> - printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
> - dev->name, ioread16(ioaddr + IntrStatus));
> - return IRQ_RETVAL(handled);
> -}
> -
> -static void rx_poll(struct tasklet_struct *t)
> -{
> - struct netdev_private *np = from_tasklet(np, t, rx_tasklet);
> - struct net_device *dev = np->ndev;
> - int entry = np->cur_rx % RX_RING_SIZE;
> - int boguscnt = np->budget;
> - void __iomem *ioaddr = np->base;
> - int received = 0;
> -
> - /* If EOP is set on the next entry, it's a new packet. Send it up. */
> - while (1) {
> - struct netdev_desc *desc = &(np->rx_ring[entry]);
> - u32 frame_status = le32_to_cpu(desc->status);
> - int pkt_len;
> -
> - if (--boguscnt < 0) {
> - goto not_done;
> - }
> - if (!(frame_status & DescOwn))
> - break;
> - pkt_len = frame_status & 0x1fff; /* Chip omits the CRC. */
> - if (netif_msg_rx_status(np))
> - printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n",
> - frame_status);
> - if (frame_status & 0x001f4000) {
> - /* There was a error. */
> - if (netif_msg_rx_err(np))
> - printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n",
> - frame_status);
> - dev->stats.rx_errors++;
> - if (frame_status & 0x00100000)
> - dev->stats.rx_length_errors++;
> - if (frame_status & 0x00010000)
> - dev->stats.rx_fifo_errors++;
> - if (frame_status & 0x00060000)
> - dev->stats.rx_frame_errors++;
> - if (frame_status & 0x00080000)
> - dev->stats.rx_crc_errors++;
> - if (frame_status & 0x00100000) {
> - printk(KERN_WARNING "%s: Oversized Ethernet frame,"
> - " status %8.8x.\n",
> - dev->name, frame_status);
> - }
> - } else {
> - struct sk_buff *skb;
> -#ifndef final_version
> - if (netif_msg_rx_status(np))
> - printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d"
> - ", bogus_cnt %d.\n",
> - pkt_len, boguscnt);
> -#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) {
> - skb_reserve(skb, 2); /* 16 byte align the IP header */
> - dma_sync_single_for_cpu(&np->pci_dev->dev,
> - le32_to_cpu(desc->frag.addr),
> - np->rx_buf_sz, DMA_FROM_DEVICE);
> - skb_copy_to_linear_data(skb, np->rx_skbuff[entry]->data, pkt_len);
> - dma_sync_single_for_device(&np->pci_dev->dev,
> - le32_to_cpu(desc->frag.addr),
> - np->rx_buf_sz, DMA_FROM_DEVICE);
> - skb_put(skb, pkt_len);
> - } else {
> - dma_unmap_single(&np->pci_dev->dev,
> - le32_to_cpu(desc->frag.addr),
> - np->rx_buf_sz, DMA_FROM_DEVICE);
> - skb_put(skb = np->rx_skbuff[entry], pkt_len);
> - np->rx_skbuff[entry] = NULL;
> - }
> - skb->protocol = eth_type_trans(skb, dev);
> - /* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */
> - netif_rx(skb);
> - }
> - entry = (entry + 1) % RX_RING_SIZE;
> - received++;
> - }
> - np->cur_rx = entry;
> - refill_rx (dev);
> - np->budget -= received;
> - iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
> - return;
> -
> -not_done:
> - np->cur_rx = entry;
> - refill_rx (dev);
> - if (!received)
> - received = 1;
> - np->budget -= received;
> - if (np->budget <= 0)
> - np->budget = RX_BUDGET;
> - tasklet_schedule(&np->rx_tasklet);
> -}
> -
> -static void refill_rx (struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - int entry;
> -
> - /* Refill the Rx ring buffers. */
> - for (;(np->cur_rx - np->dirty_rx + RX_RING_SIZE) % RX_RING_SIZE > 0;
> - np->dirty_rx = (np->dirty_rx + 1) % RX_RING_SIZE) {
> - struct sk_buff *skb;
> - entry = np->dirty_rx % RX_RING_SIZE;
> - if (np->rx_skbuff[entry] == NULL) {
> - skb = netdev_alloc_skb(dev, np->rx_buf_sz + 2);
> - np->rx_skbuff[entry] = skb;
> - if (skb == NULL)
> - break; /* Better luck next round. */
> - skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
> - np->rx_ring[entry].frag.addr = cpu_to_le32(
> - dma_map_single(&np->pci_dev->dev, skb->data,
> - np->rx_buf_sz, DMA_FROM_DEVICE));
> - if (dma_mapping_error(&np->pci_dev->dev,
> - np->rx_ring[entry].frag.addr)) {
> - dev_kfree_skb_irq(skb);
> - np->rx_skbuff[entry] = NULL;
> - break;
> - }
> - }
> - /* Perhaps we need not reset this field. */
> - np->rx_ring[entry].frag.length =
> - cpu_to_le32(np->rx_buf_sz | LastFrag);
> - np->rx_ring[entry].status = 0;
> - }
> -}
> -static void netdev_error(struct net_device *dev, int intr_status)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - u16 mii_ctl, mii_advertise, mii_lpa;
> - int speed;
> -
> - if (intr_status & LinkChange) {
> - if (mdio_wait_link(dev, 10) == 0) {
> - printk(KERN_INFO "%s: Link up\n", dev->name);
> - if (np->an_enable) {
> - mii_advertise = mdio_read(dev, np->phys[0],
> - MII_ADVERTISE);
> - mii_lpa = mdio_read(dev, np->phys[0], MII_LPA);
> - mii_advertise &= mii_lpa;
> - printk(KERN_INFO "%s: Link changed: ",
> - dev->name);
> - if (mii_advertise & ADVERTISE_100FULL) {
> - np->speed = 100;
> - printk("100Mbps, full duplex\n");
> - } else if (mii_advertise & ADVERTISE_100HALF) {
> - np->speed = 100;
> - printk("100Mbps, half duplex\n");
> - } else if (mii_advertise & ADVERTISE_10FULL) {
> - np->speed = 10;
> - printk("10Mbps, full duplex\n");
> - } else if (mii_advertise & ADVERTISE_10HALF) {
> - np->speed = 10;
> - printk("10Mbps, half duplex\n");
> - } else
> - printk("\n");
> -
> - } else {
> - mii_ctl = mdio_read(dev, np->phys[0], MII_BMCR);
> - speed = (mii_ctl & BMCR_SPEED100) ? 100 : 10;
> - np->speed = speed;
> - printk(KERN_INFO "%s: Link changed: %dMbps ,",
> - dev->name, speed);
> - printk("%s duplex.\n",
> - (mii_ctl & BMCR_FULLDPLX) ?
> - "full" : "half");
> - }
> - check_duplex(dev);
> - if (np->flowctrl && np->mii_if.full_duplex) {
> - iowrite16(ioread16(ioaddr + MulticastFilter1+2) | 0x0200,
> - ioaddr + MulticastFilter1+2);
> - iowrite16(ioread16(ioaddr + MACCtrl0) | EnbFlowCtrl,
> - ioaddr + MACCtrl0);
> - }
> - netif_carrier_on(dev);
> - } else {
> - printk(KERN_INFO "%s: Link down\n", dev->name);
> - netif_carrier_off(dev);
> - }
> - }
> - if (intr_status & StatsMax) {
> - get_stats(dev);
> - }
> - if (intr_status & IntrPCIErr) {
> - printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n",
> - dev->name, intr_status);
> - /* We must do a global reset of DMA to continue. */
> - }
> -}
> -
> -static struct net_device_stats *get_stats(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - unsigned long flags;
> - u8 late_coll, single_coll, mult_coll;
> -
> - spin_lock_irqsave(&np->statlock, flags);
> - /* The chip only need report frame silently dropped. */
> - dev->stats.rx_missed_errors += ioread8(ioaddr + RxMissed);
> - dev->stats.tx_packets += ioread16(ioaddr + TxFramesOK);
> - dev->stats.rx_packets += ioread16(ioaddr + RxFramesOK);
> - dev->stats.tx_carrier_errors += ioread8(ioaddr + StatsCarrierError);
> -
> - mult_coll = ioread8(ioaddr + StatsMultiColl);
> - np->xstats.tx_multiple_collisions += mult_coll;
> - single_coll = ioread8(ioaddr + StatsOneColl);
> - np->xstats.tx_single_collisions += single_coll;
> - late_coll = ioread8(ioaddr + StatsLateColl);
> - np->xstats.tx_late_collisions += late_coll;
> - dev->stats.collisions += mult_coll
> - + single_coll
> - + late_coll;
> -
> - np->xstats.tx_deferred += ioread8(ioaddr + StatsTxDefer);
> - np->xstats.tx_deferred_excessive += ioread8(ioaddr + StatsTxXSDefer);
> - np->xstats.tx_aborted += ioread8(ioaddr + StatsTxAbort);
> - np->xstats.tx_bcasts += ioread8(ioaddr + StatsBcastTx);
> - np->xstats.rx_bcasts += ioread8(ioaddr + StatsBcastRx);
> - np->xstats.tx_mcasts += ioread8(ioaddr + StatsMcastTx);
> - np->xstats.rx_mcasts += ioread8(ioaddr + StatsMcastRx);
> -
> - dev->stats.tx_bytes += ioread16(ioaddr + TxOctetsLow);
> - dev->stats.tx_bytes += ioread16(ioaddr + TxOctetsHigh) << 16;
> - dev->stats.rx_bytes += ioread16(ioaddr + RxOctetsLow);
> - dev->stats.rx_bytes += ioread16(ioaddr + RxOctetsHigh) << 16;
> -
> - spin_unlock_irqrestore(&np->statlock, flags);
> -
> - return &dev->stats;
> -}
> -
> -static void set_rx_mode(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - u16 mc_filter[4]; /* Multicast hash filter */
> - u32 rx_mode;
> - int i;
> -
> - if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
> - memset(mc_filter, 0xff, sizeof(mc_filter));
> - rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAll |
> AcceptMyPhys;
> - } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
> - (dev->flags & IFF_ALLMULTI)) {
> - /* Too many to match, or accept all multicasts. */
> - memset(mc_filter, 0xff, sizeof(mc_filter));
> - rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
> - } else if (!netdev_mc_empty(dev)) {
> - struct netdev_hw_addr *ha;
> - int bit;
> - int index;
> - int crc;
> - memset (mc_filter, 0, sizeof (mc_filter));
> - netdev_for_each_mc_addr(ha, dev) {
> - crc = ether_crc_le(ETH_ALEN, ha->addr);
> - for (index=0, bit=0; bit < 6; bit++, crc <<= 1)
> - if (crc & 0x80000000) index |= 1 << bit;
> - mc_filter[index/16] |= (1 << (index % 16));
> - }
> - rx_mode = AcceptBroadcast | AcceptMultiHash | AcceptMyPhys;
> - } else {
> - iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode);
> - return;
> - }
> - if (np->mii_if.full_duplex && np->flowctrl)
> - mc_filter[3] |= 0x0200;
> -
> - for (i = 0; i < 4; i++)
> - iowrite16(mc_filter[i], ioaddr + MulticastFilter0 + i*2);
> - iowrite8(rx_mode, ioaddr + RxMode);
> -}
> -
> -static int __set_mac_addr(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - u16 addr16;
> -
> - addr16 = (dev->dev_addr[0] | (dev->dev_addr[1] << 8));
> - iowrite16(addr16, np->base + StationAddr);
> - addr16 = (dev->dev_addr[2] | (dev->dev_addr[3] << 8));
> - iowrite16(addr16, np->base + StationAddr+2);
> - addr16 = (dev->dev_addr[4] | (dev->dev_addr[5] << 8));
> - iowrite16(addr16, np->base + StationAddr+4);
> - return 0;
> -}
> -
> -/* Invoked with rtnl_lock held */
> -static int sundance_set_mac_addr(struct net_device *dev, void *data)
> -{
> - const struct sockaddr *addr = data;
> -
> - if (!is_valid_ether_addr(addr->sa_data))
> - return -EADDRNOTAVAIL;
> - eth_hw_addr_set(dev, addr->sa_data);
> - __set_mac_addr(dev);
> -
> - return 0;
> -}
> -
> -static const struct {
> - const char name[ETH_GSTRING_LEN];
> -} sundance_stats[] = {
> - { "tx_multiple_collisions" },
> - { "tx_single_collisions" },
> - { "tx_late_collisions" },
> - { "tx_deferred" },
> - { "tx_deferred_excessive" },
> - { "tx_aborted" },
> - { "tx_bcasts" },
> - { "rx_bcasts" },
> - { "tx_mcasts" },
> - { "rx_mcasts" },
> -};
> -
> -static int check_if_running(struct net_device *dev)
> -{
> - if (!netif_running(dev))
> - return -EINVAL;
> - return 0;
> -}
> -
> -static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo
> *info)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - strscpy(info->driver, DRV_NAME, sizeof(info->driver));
> - strscpy(info->bus_info, pci_name(np->pci_dev),
> sizeof(info->bus_info));
> -}
> -
> -static int get_link_ksettings(struct net_device *dev,
> - struct ethtool_link_ksettings *cmd)
> -{
> - struct netdev_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 set_link_ksettings(struct net_device *dev,
> - const struct ethtool_link_ksettings *cmd)
> -{
> - struct netdev_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 nway_reset(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - return mii_nway_restart(&np->mii_if);
> -}
> -
> -static u32 get_link(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - return mii_link_ok(&np->mii_if);
> -}
> -
> -static u32 get_msglevel(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - return np->msg_enable;
> -}
> -
> -static void set_msglevel(struct net_device *dev, u32 val)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - np->msg_enable = val;
> -}
> -
> -static void get_strings(struct net_device *dev, u32 stringset,
> - u8 *data)
> -{
> - if (stringset == ETH_SS_STATS)
> - memcpy(data, sundance_stats, sizeof(sundance_stats));
> -}
> -
> -static int get_sset_count(struct net_device *dev, int sset)
> -{
> - switch (sset) {
> - case ETH_SS_STATS:
> - return ARRAY_SIZE(sundance_stats);
> - default:
> - return -EOPNOTSUPP;
> - }
> -}
> -
> -static void get_ethtool_stats(struct net_device *dev,
> - struct ethtool_stats *stats, u64 *data)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - int i = 0;
> -
> - get_stats(dev);
> - data[i++] = np->xstats.tx_multiple_collisions;
> - data[i++] = np->xstats.tx_single_collisions;
> - data[i++] = np->xstats.tx_late_collisions;
> - data[i++] = np->xstats.tx_deferred;
> - data[i++] = np->xstats.tx_deferred_excessive;
> - data[i++] = np->xstats.tx_aborted;
> - data[i++] = np->xstats.tx_bcasts;
> - data[i++] = np->xstats.rx_bcasts;
> - data[i++] = np->xstats.tx_mcasts;
> - data[i++] = np->xstats.rx_mcasts;
> -}
> -
> -#ifdef CONFIG_PM
> -
> -static void sundance_get_wol(struct net_device *dev,
> - struct ethtool_wolinfo *wol)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - u8 wol_bits;
> -
> - wol->wolopts = 0;
> -
> - wol->supported = (WAKE_PHY | WAKE_MAGIC);
> - if (!np->wol_enabled)
> - return;
> -
> - wol_bits = ioread8(ioaddr + WakeEvent);
> - if (wol_bits & MagicPktEnable)
> - wol->wolopts |= WAKE_MAGIC;
> - if (wol_bits & LinkEventEnable)
> - wol->wolopts |= WAKE_PHY;
> -}
> -
> -static int sundance_set_wol(struct net_device *dev,
> - struct ethtool_wolinfo *wol)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - u8 wol_bits;
> -
> - if (!device_can_wakeup(&np->pci_dev->dev))
> - return -EOPNOTSUPP;
> -
> - np->wol_enabled = !!(wol->wolopts);
> - wol_bits = ioread8(ioaddr + WakeEvent);
> - wol_bits &= ~(WakePktEnable | MagicPktEnable |
> - LinkEventEnable | WolEnable);
> -
> - if (np->wol_enabled) {
> - if (wol->wolopts & WAKE_MAGIC)
> - wol_bits |= (MagicPktEnable | WolEnable);
> - if (wol->wolopts & WAKE_PHY)
> - wol_bits |= (LinkEventEnable | WolEnable);
> - }
> - iowrite8(wol_bits, ioaddr + WakeEvent);
> -
> - device_set_wakeup_enable(&np->pci_dev->dev, np->wol_enabled);
> -
> - return 0;
> -}
> -#else
> -#define sundance_get_wol NULL
> -#define sundance_set_wol NULL
> -#endif /* CONFIG_PM */
> -
> -static const struct ethtool_ops ethtool_ops = {
> - .begin = check_if_running,
> - .get_drvinfo = get_drvinfo,
> - .nway_reset = nway_reset,
> - .get_link = get_link,
> - .get_wol = sundance_get_wol,
> - .set_wol = sundance_set_wol,
> - .get_msglevel = get_msglevel,
> - .set_msglevel = set_msglevel,
> - .get_strings = get_strings,
> - .get_sset_count = get_sset_count,
> - .get_ethtool_stats = get_ethtool_stats,
> - .get_link_ksettings = get_link_ksettings,
> - .set_link_ksettings = set_link_ksettings,
> -};
> -
> -static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int
> cmd)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - int rc;
> -
> - if (!netif_running(dev))
> - return -EINVAL;
> -
> - spin_lock_irq(&np->lock);
> - rc = generic_mii_ioctl(&np->mii_if, if_mii(rq), cmd, NULL);
> - spin_unlock_irq(&np->lock);
> -
> - return rc;
> -}
> -
> -static int netdev_close(struct net_device *dev)
> -{
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> - struct sk_buff *skb;
> - int i;
> -
> - /* Wait and kill tasklet */
> - tasklet_kill(&np->rx_tasklet);
> - tasklet_kill(&np->tx_tasklet);
> - np->cur_tx = 0;
> - np->dirty_tx = 0;
> - np->cur_task = 0;
> - np->last_tx = NULL;
> -
> - netif_stop_queue(dev);
> -
> - if (netif_msg_ifdown(np)) {
> - printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %2.2x "
> - "Rx %4.4x Int %2.2x.\n",
> - dev->name, ioread8(ioaddr + TxStatus),
> - ioread32(ioaddr + RxStatus), ioread16(ioaddr + IntrStatus));
> - printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d /
> %d.\n",
> - dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx);
> - }
> -
> - /* Disable interrupts by clearing the interrupt mask. */
> - iowrite16(0x0000, ioaddr + IntrEnable);
> -
> - /* Disable Rx and Tx DMA for safely release resource */
> - iowrite32(0x500, ioaddr + DMACtrl);
> -
> - /* Stop the chip's Tx and Rx processes. */
> - iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1);
> -
> - for (i = 2000; i > 0; i--) {
> - if ((ioread32(ioaddr + DMACtrl) & 0xc000) == 0)
> - break;
> - mdelay(1);
> - }
> -
> - iowrite16(GlobalReset | DMAReset | FIFOReset | NetworkReset,
> - ioaddr + ASIC_HI_WORD(ASICCtrl));
> -
> - for (i = 2000; i > 0; i--) {
> - if ((ioread16(ioaddr + ASIC_HI_WORD(ASICCtrl)) & ResetBusy) == 0)
> - break;
> - mdelay(1);
> - }
> -
> -#ifdef __i386__
> - if (netif_msg_hw(np)) {
> - printk(KERN_DEBUG " Tx ring at %8.8x:\n",
> - (int)(np->tx_ring_dma));
> - for (i = 0; i < TX_RING_SIZE; i++)
> - printk(KERN_DEBUG " #%d desc. %4.4x %8.8x %8.8x.\n",
> - i, np->tx_ring[i].status, np->tx_ring[i].frag.addr,
> - np->tx_ring[i].frag.length);
> - printk(KERN_DEBUG " Rx ring %8.8x:\n",
> - (int)(np->rx_ring_dma));
> - for (i = 0; i < /*RX_RING_SIZE*/4 ; i++) {
> - printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n",
> - i, np->rx_ring[i].status, np->rx_ring[i].frag.addr,
> - np->rx_ring[i].frag.length);
> - }
> - }
> -#endif /* __i386__ debugging only */
> -
> - free_irq(np->pci_dev->irq, dev);
> -
> - del_timer_sync(&np->timer);
> -
> - /* Free all the skbuffs in the Rx queue. */
> - for (i = 0; i < RX_RING_SIZE; i++) {
> - np->rx_ring[i].status = 0;
> - skb = np->rx_skbuff[i];
> - if (skb) {
> - dma_unmap_single(&np->pci_dev->dev,
> - le32_to_cpu(np->rx_ring[i].frag.addr),
> - np->rx_buf_sz, DMA_FROM_DEVICE);
> - dev_kfree_skb(skb);
> - np->rx_skbuff[i] = NULL;
> - }
> - np->rx_ring[i].frag.addr = cpu_to_le32(0xBADF00D0); /* poison */
> - }
> - for (i = 0; i < TX_RING_SIZE; i++) {
> - np->tx_ring[i].next_desc = 0;
> - skb = np->tx_skbuff[i];
> - if (skb) {
> - dma_unmap_single(&np->pci_dev->dev,
> - le32_to_cpu(np->tx_ring[i].frag.addr),
> - skb->len, DMA_TO_DEVICE);
> - dev_kfree_skb(skb);
> - np->tx_skbuff[i] = NULL;
> - }
> - }
> -
> - return 0;
> -}
> -
> -static void sundance_remove1(struct pci_dev *pdev)
> -{
> - struct net_device *dev = pci_get_drvdata(pdev);
> -
> - if (dev) {
> - struct netdev_private *np = netdev_priv(dev);
> - unregister_netdev(dev);
> - 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);
> - pci_iounmap(pdev, np->base);
> - pci_release_regions(pdev);
> - free_netdev(dev);
> - }
> -}
> -
> -static int __maybe_unused sundance_suspend(struct device *dev_d)
> -{
> - struct net_device *dev = dev_get_drvdata(dev_d);
> - struct netdev_private *np = netdev_priv(dev);
> - void __iomem *ioaddr = np->base;
> -
> - if (!netif_running(dev))
> - return 0;
> -
> - netdev_close(dev);
> - netif_device_detach(dev);
> -
> - if (np->wol_enabled) {
> - iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode);
> - iowrite16(RxEnable, ioaddr + MACCtrl1);
> - }
> -
> - device_set_wakeup_enable(dev_d, np->wol_enabled);
> -
> - return 0;
> -}
> -
> -static int __maybe_unused sundance_resume(struct device *dev_d)
> -{
> - struct net_device *dev = dev_get_drvdata(dev_d);
> - int err = 0;
> -
> - if (!netif_running(dev))
> - return 0;
> -
> - err = netdev_open(dev);
> - if (err) {
> - printk(KERN_ERR "%s: Can't resume interface!\n",
> - dev->name);
> - goto out;
> - }
> -
> - netif_device_attach(dev);
> -
> -out:
> - return err;
> -}
> -
> -static SIMPLE_DEV_PM_OPS(sundance_pm_ops, sundance_suspend,
> sundance_resume);
> -
> -static struct pci_driver sundance_driver = {
> - .name = DRV_NAME,
> - .id_table = sundance_pci_tbl,
> - .probe = sundance_probe1,
> - .remove = sundance_remove1,
> - .driver.pm = &sundance_pm_ops,
> -};
> -
> -module_pci_driver(sundance_driver);
> --
> 2.46.2
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