| Message ID | 20241008154824.1448370-1-kuba@kernel.org (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | [net-next] eth: remove the DLink/Sundance (ST201) driver | expand |
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@kernel.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@linux-powerpc.org > CC: arnd@arndb.de > CC: tsbogend@alpha.franken.de > CC: mpe@ellerman.id.au > CC: npiggin@gmail.com > CC: christophe.leroy@csgroup.eu > CC: naveen@kernel.org > CC: maddy@linux.ibm.com > CC: pctammela@mojatatu.com > CC: victor@mojatatu.com > CC: coelacanthushex@gmail.com > CC: jhs@mojatatu.com > CC: horms@kernel.org > CC: shannon.nelson@amd.com > CC: sd@queasysnail.net > CC: linux-mips@vger.kernel.org > CC: linuxppc-dev@lists.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@linux-powerpc.org> > -L: netdev@vger.kernel.org > -S: Maintained > -F: drivers/net/ethernet/dlink/sundance.c > - > SUNPLUS ETHERNET DRIVER > M: Wells Lu <wellslutw@gmail.com> > L: netdev@vger.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@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/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@scyld.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@macqel.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
On Tue, Oct 08, 2024 at 08:48:24AM -0700, 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@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org>
On 2024-10-08 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@kernel.org> > --- Acked-by: Denis Kirjanov <dkirjanov@suse.de>
Hello: This patch was applied to netdev/net-next.git (main) by David S. Miller <davem@davemloft.net>: On Tue, 8 Oct 2024 08:48:24 -0700 you 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@kernel.org> > > [...] Here is the summary with links: - [net-next] eth: remove the DLink/Sundance (ST201) driver https://git.kernel.org/netdev/net-next/c/8401a108a633 You are awesome, thank you!
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@linux-powerpc.org> -L: netdev@vger.kernel.org -S: Maintained -F: drivers/net/ethernet/dlink/sundance.c - SUNPLUS ETHERNET DRIVER M: Wells Lu <wellslutw@gmail.com> L: netdev@vger.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@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/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@scyld.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@macqel.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);
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@kernel.org> --- CC: kda@linux-powerpc.org CC: arnd@arndb.de CC: tsbogend@alpha.franken.de CC: mpe@ellerman.id.au CC: npiggin@gmail.com CC: christophe.leroy@csgroup.eu CC: naveen@kernel.org CC: maddy@linux.ibm.com CC: pctammela@mojatatu.com CC: victor@mojatatu.com CC: coelacanthushex@gmail.com CC: jhs@mojatatu.com CC: horms@kernel.org CC: shannon.nelson@amd.com CC: sd@queasysnail.net CC: linux-mips@vger.kernel.org CC: linuxppc-dev@lists.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