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Message-ID: <20241008154824.1448370-1-kuba@kernel.org>
Date: Tue, 8 Oct 2024 08:48:24 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
edumazet@...gle.com,
pabeni@...hat.com,
Jakub Kicinski <kuba@...nel.org>,
kda@...ux-powerpc.org,
arnd@...db.de,
tsbogend@...ha.franken.de,
mpe@...erman.id.au,
npiggin@...il.com,
christophe.leroy@...roup.eu,
naveen@...nel.org,
maddy@...ux.ibm.com,
pctammela@...atatu.com,
victor@...atatu.com,
coelacanthushex@...il.com,
jhs@...atatu.com,
horms@...nel.org,
shannon.nelson@....com,
sd@...asysnail.net,
linux-mips@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH net-next] eth: remove the DLink/Sundance (ST201) 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@...nel.org>
---
CC: kda@...ux-powerpc.org
CC: arnd@...db.de
CC: tsbogend@...ha.franken.de
CC: mpe@...erman.id.au
CC: npiggin@...il.com
CC: christophe.leroy@...roup.eu
CC: naveen@...nel.org
CC: maddy@...ux.ibm.com
CC: pctammela@...atatu.com
CC: victor@...atatu.com
CC: coelacanthushex@...il.com
CC: jhs@...atatu.com
CC: horms@...nel.org
CC: shannon.nelson@....com
CC: sd@...asysnail.net
CC: linux-mips@...r.kernel.org
CC: linuxppc-dev@...ts.ozlabs.org
---
MAINTAINERS | 6 -
arch/mips/configs/mtx1_defconfig | 1 -
arch/powerpc/configs/ppc6xx_defconfig | 1 -
drivers/net/ethernet/dlink/Kconfig | 20 -
drivers/net/ethernet/dlink/Makefile | 1 -
drivers/net/ethernet/dlink/sundance.c | 1985 -------------------------
6 files changed, 2014 deletions(-)
delete mode 100644 drivers/net/ethernet/dlink/sundance.c
diff --git a/MAINTAINERS b/MAINTAINERS
index e5311fc990c4..3ee4b6ca8da4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -22242,12 +22242,6 @@ S: Maintained
F: Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml
F: drivers/input/keyboard/sun4i-lradc-keys.c
-SUNDANCE NETWORK DRIVER
-M: Denis Kirjanov <kda@...ux-powerpc.org>
-L: netdev@...r.kernel.org
-S: Maintained
-F: drivers/net/ethernet/dlink/sundance.c
-
SUNPLUS ETHERNET DRIVER
M: Wells Lu <wellslutw@...il.com>
L: netdev@...r.kernel.org
diff --git a/arch/mips/configs/mtx1_defconfig b/arch/mips/configs/mtx1_defconfig
index 935585d8bb26..8e98c0796437 100644
--- a/arch/mips/configs/mtx1_defconfig
+++ b/arch/mips/configs/mtx1_defconfig
@@ -275,7 +275,6 @@ CONFIG_DM9102=m
CONFIG_ULI526X=m
CONFIG_PCMCIA_XIRCOM=m
CONFIG_DL2K=m
-CONFIG_SUNDANCE=m
CONFIG_PCMCIA_FMVJ18X=m
CONFIG_E100=m
CONFIG_E1000=m
diff --git a/arch/powerpc/configs/ppc6xx_defconfig b/arch/powerpc/configs/ppc6xx_defconfig
index c06344db0eb3..4d77e17541e9 100644
--- a/arch/powerpc/configs/ppc6xx_defconfig
+++ b/arch/powerpc/configs/ppc6xx_defconfig
@@ -435,7 +435,6 @@ CONFIG_DM9102=m
CONFIG_ULI526X=m
CONFIG_PCMCIA_XIRCOM=m
CONFIG_DL2K=m
-CONFIG_SUNDANCE=m
CONFIG_S2IO=m
CONFIG_FEC_MPC52xx=m
CONFIG_GIANFAR=m
diff --git a/drivers/net/ethernet/dlink/Kconfig b/drivers/net/ethernet/dlink/Kconfig
index 0d77f84c8e7b..e9e13654812c 100644
--- a/drivers/net/ethernet/dlink/Kconfig
+++ b/drivers/net/ethernet/dlink/Kconfig
@@ -32,24 +32,4 @@ config DL2K
To compile this driver as a module, choose M here: the
module will be called dl2k.
-config SUNDANCE
- tristate "Sundance Alta support"
- depends on PCI
- select CRC32
- select MII
- help
- This driver is for the Sundance "Alta" chip.
- More specific information and updates are available from
- <http://www.scyld.com/network/sundance.html>.
-
-config SUNDANCE_MMIO
- bool "Use MMIO instead of PIO"
- depends on SUNDANCE
- help
- Enable memory-mapped I/O for interaction with Sundance NIC registers.
- Do NOT enable this by default, PIO (enabled when MMIO is disabled)
- is known to solve bugs on certain chips.
-
- If unsure, say N.
-
endif # NET_VENDOR_DLINK
diff --git a/drivers/net/ethernet/dlink/Makefile b/drivers/net/ethernet/dlink/Makefile
index 3ff503c747db..38c236eb6007 100644
--- a/drivers/net/ethernet/dlink/Makefile
+++ b/drivers/net/ethernet/dlink/Makefile
@@ -4,4 +4,3 @@
#
obj-$(CONFIG_DL2K) += dl2k.o
-obj-$(CONFIG_SUNDANCE) += sundance.o
diff --git a/drivers/net/ethernet/dlink/sundance.c b/drivers/net/ethernet/dlink/sundance.c
deleted file mode 100644
index 8af5ecec7d61..000000000000
--- a/drivers/net/ethernet/dlink/sundance.c
+++ /dev/null
@@ -1,1985 +0,0 @@
-/* sundance.c: A Linux device driver for the Sundance ST201 "Alta". */
-/*
- Written 1999-2000 by Donald Becker.
-
- This software may be used and distributed according to the terms of
- the GNU General Public License (GPL), incorporated herein by reference.
- Drivers based on or derived from this code fall under the GPL and must
- retain the authorship, copyright and license notice. This file is not
- a complete program and may only be used when the entire operating
- system is licensed under the GPL.
-
- The author may be reached as becker@...ld.com, or C/O
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
-
- Support and updates available at
- http://www.scyld.com/network/sundance.html
- [link no longer provides useful info -jgarzik]
- Archives of the mailing list are still available at
- https://www.beowulf.org/pipermail/netdrivers/
-
-*/
-
-#define DRV_NAME "sundance"
-
-/* The user-configurable values.
- These may be modified when a driver module is loaded.*/
-static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
-/* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
- Typical is a 64 element hash table based on the Ethernet CRC. */
-static const int multicast_filter_limit = 32;
-
-/* Set the copy breakpoint for the copy-only-tiny-frames scheme.
- Setting to > 1518 effectively disables this feature.
- This chip can receive into offset buffers, so the Alpha does not
- need a copy-align. */
-static int rx_copybreak;
-static int flowctrl=1;
-
-/* media[] specifies the media type the NIC operates at.
- autosense Autosensing active media.
- 10mbps_hd 10Mbps half duplex.
- 10mbps_fd 10Mbps full duplex.
- 100mbps_hd 100Mbps half duplex.
- 100mbps_fd 100Mbps full duplex.
- 0 Autosensing active media.
- 1 10Mbps half duplex.
- 2 10Mbps full duplex.
- 3 100Mbps half duplex.
- 4 100Mbps full duplex.
-*/
-#define MAX_UNITS 8
-static char *media[MAX_UNITS];
-
-
-/* Operational parameters that are set at compile time. */
-
-/* Keep the ring sizes a power of two for compile efficiency.
- The compiler will convert <unsigned>'%'<2^N> into a bit mask.
- Making the Tx ring too large decreases the effectiveness of channel
- bonding and packet priority, and more than 128 requires modifying the
- Tx error recovery.
- Large receive rings merely waste memory. */
-#define TX_RING_SIZE 32
-#define TX_QUEUE_LEN (TX_RING_SIZE - 1) /* Limit ring entries actually used. */
-#define RX_RING_SIZE 64
-#define RX_BUDGET 32
-#define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct netdev_desc)
-#define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct netdev_desc)
-
-/* Operational parameters that usually are not changed. */
-/* Time in jiffies before concluding the transmitter is hung. */
-#define TX_TIMEOUT (4*HZ)
-#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
-
-/* Include files, designed to support most kernel versions 2.0.0 and later. */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/pci.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <linux/uaccess.h>
-#include <asm/processor.h> /* Processor type for cache alignment. */
-#include <asm/io.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
-#include <linux/dma-mapping.h>
-#include <linux/crc32.h>
-#include <linux/ethtool.h>
-#include <linux/mii.h>
-
-MODULE_AUTHOR("Donald Becker <becker@...ld.com>");
-MODULE_DESCRIPTION("Sundance Alta Ethernet driver");
-MODULE_LICENSE("GPL");
-
-module_param(debug, int, 0);
-module_param(rx_copybreak, int, 0);
-module_param_array(media, charp, NULL, 0);
-module_param(flowctrl, int, 0);
-MODULE_PARM_DESC(debug, "Sundance Alta debug level (0-5)");
-MODULE_PARM_DESC(rx_copybreak, "Sundance Alta copy breakpoint for copy-only-tiny-frames");
-MODULE_PARM_DESC(flowctrl, "Sundance Alta flow control [0|1]");
-
-/*
- Theory of Operation
-
-I. Board Compatibility
-
-This driver is designed for the Sundance Technologies "Alta" ST201 chip.
-
-II. Board-specific settings
-
-III. Driver operation
-
-IIIa. Ring buffers
-
-This driver uses two statically allocated fixed-size descriptor lists
-formed into rings by a branch from the final descriptor to the beginning of
-the list. The ring sizes are set at compile time by RX/TX_RING_SIZE.
-Some chips explicitly use only 2^N sized rings, while others use a
-'next descriptor' pointer that the driver forms into rings.
-
-IIIb/c. Transmit/Receive Structure
-
-This driver uses a zero-copy receive and transmit scheme.
-The driver allocates full frame size skbuffs for the Rx ring buffers at
-open() time and passes the skb->data field to the chip as receive data
-buffers. When an incoming frame is less than RX_COPYBREAK bytes long,
-a fresh skbuff is allocated and the frame is copied to the new skbuff.
-When the incoming frame is larger, the skbuff is passed directly up the
-protocol stack. Buffers consumed this way are replaced by newly allocated
-skbuffs in a later phase of receives.
-
-The RX_COPYBREAK value is chosen to trade-off the memory wasted by
-using a full-sized skbuff for small frames vs. the copying costs of larger
-frames. New boards are typically used in generously configured machines
-and the underfilled buffers have negligible impact compared to the benefit of
-a single allocation size, so the default value of zero results in never
-copying packets. When copying is done, the cost is usually mitigated by using
-a combined copy/checksum routine. Copying also preloads the cache, which is
-most useful with small frames.
-
-A subtle aspect of the operation is that the IP header at offset 14 in an
-ethernet frame isn't longword aligned for further processing.
-Unaligned buffers are permitted by the Sundance hardware, so
-frames are received into the skbuff at an offset of "+2", 16-byte aligning
-the IP header.
-
-IIId. Synchronization
-
-The driver runs as two independent, single-threaded flows of control. One
-is the send-packet routine, which enforces single-threaded use by the
-dev->tbusy flag. The other thread is the interrupt handler, which is single
-threaded by the hardware and interrupt handling software.
-
-The send packet thread has partial control over the Tx ring and 'dev->tbusy'
-flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next
-queue slot is empty, it clears the tbusy flag when finished otherwise it sets
-the 'lp->tx_full' flag.
-
-The interrupt handler has exclusive control over the Rx ring and records stats
-from the Tx ring. After reaping the stats, it marks the Tx queue entry as
-empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it
-clears both the tx_full and tbusy flags.
-
-IV. Notes
-
-IVb. References
-
-The Sundance ST201 datasheet, preliminary version.
-The Kendin KS8723 datasheet, preliminary version.
-The ICplus IP100 datasheet, preliminary version.
-http://www.scyld.com/expert/100mbps.html
-http://www.scyld.com/expert/NWay.html
-
-IVc. Errata
-
-*/
-
-/* Work-around for Kendin chip bugs. */
-#ifndef CONFIG_SUNDANCE_MMIO
-#define USE_IO_OPS 1
-#endif
-
-static const struct pci_device_id sundance_pci_tbl[] = {
- { 0x1186, 0x1002, 0x1186, 0x1002, 0, 0, 0 },
- { 0x1186, 0x1002, 0x1186, 0x1003, 0, 0, 1 },
- { 0x1186, 0x1002, 0x1186, 0x1012, 0, 0, 2 },
- { 0x1186, 0x1002, 0x1186, 0x1040, 0, 0, 3 },
- { 0x1186, 0x1002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
- { 0x13F0, 0x0201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
- { 0x13F0, 0x0200, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
- { }
-};
-MODULE_DEVICE_TABLE(pci, sundance_pci_tbl);
-
-enum {
- netdev_io_size = 128
-};
-
-struct pci_id_info {
- const char *name;
-};
-static const struct pci_id_info pci_id_tbl[] = {
- {"D-Link DFE-550TX FAST Ethernet Adapter"},
- {"D-Link DFE-550FX 100Mbps Fiber-optics Adapter"},
- {"D-Link DFE-580TX 4 port Server Adapter"},
- {"D-Link DFE-530TXS FAST Ethernet Adapter"},
- {"D-Link DL10050-based FAST Ethernet Adapter"},
- {"Sundance Technology Alta"},
- {"IC Plus Corporation IP100A FAST Ethernet Adapter"},
- { } /* terminate list. */
-};
-
-/* This driver was written to use PCI memory space, however x86-oriented
- hardware often uses I/O space accesses. */
-
-/* Offsets to the device registers.
- Unlike software-only systems, device drivers interact with complex hardware.
- It's not useful to define symbolic names for every register bit in the
- device. The name can only partially document the semantics and make
- the driver longer and more difficult to read.
- In general, only the important configuration values or bits changed
- multiple times should be defined symbolically.
-*/
-enum alta_offsets {
- DMACtrl = 0x00,
- TxListPtr = 0x04,
- TxDMABurstThresh = 0x08,
- TxDMAUrgentThresh = 0x09,
- TxDMAPollPeriod = 0x0a,
- RxDMAStatus = 0x0c,
- RxListPtr = 0x10,
- DebugCtrl0 = 0x1a,
- DebugCtrl1 = 0x1c,
- RxDMABurstThresh = 0x14,
- RxDMAUrgentThresh = 0x15,
- RxDMAPollPeriod = 0x16,
- LEDCtrl = 0x1a,
- ASICCtrl = 0x30,
- EEData = 0x34,
- EECtrl = 0x36,
- FlashAddr = 0x40,
- FlashData = 0x44,
- WakeEvent = 0x45,
- TxStatus = 0x46,
- TxFrameId = 0x47,
- DownCounter = 0x18,
- IntrClear = 0x4a,
- IntrEnable = 0x4c,
- IntrStatus = 0x4e,
- MACCtrl0 = 0x50,
- MACCtrl1 = 0x52,
- StationAddr = 0x54,
- MaxFrameSize = 0x5A,
- RxMode = 0x5c,
- MIICtrl = 0x5e,
- MulticastFilter0 = 0x60,
- MulticastFilter1 = 0x64,
- RxOctetsLow = 0x68,
- RxOctetsHigh = 0x6a,
- TxOctetsLow = 0x6c,
- TxOctetsHigh = 0x6e,
- TxFramesOK = 0x70,
- RxFramesOK = 0x72,
- StatsCarrierError = 0x74,
- StatsLateColl = 0x75,
- StatsMultiColl = 0x76,
- StatsOneColl = 0x77,
- StatsTxDefer = 0x78,
- RxMissed = 0x79,
- StatsTxXSDefer = 0x7a,
- StatsTxAbort = 0x7b,
- StatsBcastTx = 0x7c,
- StatsBcastRx = 0x7d,
- StatsMcastTx = 0x7e,
- StatsMcastRx = 0x7f,
- /* Aliased and bogus values! */
- RxStatus = 0x0c,
-};
-
-#define ASIC_HI_WORD(x) ((x) + 2)
-
-enum ASICCtrl_HiWord_bit {
- GlobalReset = 0x0001,
- RxReset = 0x0002,
- TxReset = 0x0004,
- DMAReset = 0x0008,
- FIFOReset = 0x0010,
- NetworkReset = 0x0020,
- HostReset = 0x0040,
- ResetBusy = 0x0400,
-};
-
-/* Bits in the interrupt status/mask registers. */
-enum intr_status_bits {
- IntrSummary=0x0001, IntrPCIErr=0x0002, IntrMACCtrl=0x0008,
- IntrTxDone=0x0004, IntrRxDone=0x0010, IntrRxStart=0x0020,
- IntrDrvRqst=0x0040,
- StatsMax=0x0080, LinkChange=0x0100,
- IntrTxDMADone=0x0200, IntrRxDMADone=0x0400,
-};
-
-/* Bits in the RxMode register. */
-enum rx_mode_bits {
- AcceptAllIPMulti=0x20, AcceptMultiHash=0x10, AcceptAll=0x08,
- AcceptBroadcast=0x04, AcceptMulticast=0x02, AcceptMyPhys=0x01,
-};
-/* Bits in MACCtrl. */
-enum mac_ctrl0_bits {
- EnbFullDuplex=0x20, EnbRcvLargeFrame=0x40,
- EnbFlowCtrl=0x100, EnbPassRxCRC=0x200,
-};
-enum mac_ctrl1_bits {
- StatsEnable=0x0020, StatsDisable=0x0040, StatsEnabled=0x0080,
- TxEnable=0x0100, TxDisable=0x0200, TxEnabled=0x0400,
- RxEnable=0x0800, RxDisable=0x1000, RxEnabled=0x2000,
-};
-
-/* Bits in WakeEvent register. */
-enum wake_event_bits {
- WakePktEnable = 0x01,
- MagicPktEnable = 0x02,
- LinkEventEnable = 0x04,
- WolEnable = 0x80,
-};
-
-/* The Rx and Tx buffer descriptors. */
-/* Note that using only 32 bit fields simplifies conversion to big-endian
- architectures. */
-struct netdev_desc {
- __le32 next_desc;
- __le32 status;
- struct desc_frag { __le32 addr, length; } frag;
-};
-
-/* Bits in netdev_desc.status */
-enum desc_status_bits {
- DescOwn=0x8000,
- DescEndPacket=0x4000,
- DescEndRing=0x2000,
- LastFrag=0x80000000,
- DescIntrOnTx=0x8000,
- DescIntrOnDMADone=0x80000000,
- DisableAlign = 0x00000001,
-};
-
-#define PRIV_ALIGN 15 /* Required alignment mask */
-/* Use __attribute__((aligned (L1_CACHE_BYTES))) to maintain alignment
- within the structure. */
-#define MII_CNT 4
-struct netdev_private {
- /* Descriptor rings first for alignment. */
- struct netdev_desc *rx_ring;
- struct netdev_desc *tx_ring;
- struct sk_buff* rx_skbuff[RX_RING_SIZE];
- struct sk_buff* tx_skbuff[TX_RING_SIZE];
- dma_addr_t tx_ring_dma;
- dma_addr_t rx_ring_dma;
- struct timer_list timer; /* Media monitoring timer. */
- struct net_device *ndev; /* backpointer */
- /* ethtool extra stats */
- struct {
- u64 tx_multiple_collisions;
- u64 tx_single_collisions;
- u64 tx_late_collisions;
- u64 tx_deferred;
- u64 tx_deferred_excessive;
- u64 tx_aborted;
- u64 tx_bcasts;
- u64 rx_bcasts;
- u64 tx_mcasts;
- u64 rx_mcasts;
- } xstats;
- /* Frequently used values: keep some adjacent for cache effect. */
- spinlock_t lock;
- int msg_enable;
- int chip_id;
- unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */
- unsigned int rx_buf_sz; /* Based on MTU+slack. */
- struct netdev_desc *last_tx; /* Last Tx descriptor used. */
- unsigned int cur_tx, dirty_tx;
- /* These values are keep track of the transceiver/media in use. */
- unsigned int flowctrl:1;
- unsigned int default_port:4; /* Last dev->if_port value. */
- unsigned int an_enable:1;
- unsigned int speed;
- unsigned int wol_enabled:1; /* Wake on LAN enabled */
- struct tasklet_struct rx_tasklet;
- struct tasklet_struct tx_tasklet;
- int budget;
- int cur_task;
- /* Multicast and receive mode. */
- spinlock_t mcastlock; /* SMP lock multicast updates. */
- u16 mcast_filter[4];
- /* MII transceiver section. */
- struct mii_if_info mii_if;
- int mii_preamble_required;
- unsigned char phys[MII_CNT]; /* MII device addresses, only first one used. */
- struct pci_dev *pci_dev;
- void __iomem *base;
- spinlock_t statlock;
-};
-
-/* The station address location in the EEPROM. */
-#define EEPROM_SA_OFFSET 0x10
-#define DEFAULT_INTR (IntrRxDMADone | IntrPCIErr | \
- IntrDrvRqst | IntrTxDone | StatsMax | \
- LinkChange)
-
-static int change_mtu(struct net_device *dev, int new_mtu);
-static int eeprom_read(void __iomem *ioaddr, int location);
-static int mdio_read(struct net_device *dev, int phy_id, int location);
-static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
-static int mdio_wait_link(struct net_device *dev, int wait);
-static int netdev_open(struct net_device *dev);
-static void check_duplex(struct net_device *dev);
-static void netdev_timer(struct timer_list *t);
-static void tx_timeout(struct net_device *dev, unsigned int txqueue);
-static void init_ring(struct net_device *dev);
-static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev);
-static int reset_tx (struct net_device *dev);
-static irqreturn_t intr_handler(int irq, void *dev_instance);
-static void rx_poll(struct tasklet_struct *t);
-static void tx_poll(struct tasklet_struct *t);
-static void refill_rx (struct net_device *dev);
-static void netdev_error(struct net_device *dev, int intr_status);
-static void netdev_error(struct net_device *dev, int intr_status);
-static void set_rx_mode(struct net_device *dev);
-static int __set_mac_addr(struct net_device *dev);
-static int sundance_set_mac_addr(struct net_device *dev, void *data);
-static struct net_device_stats *get_stats(struct net_device *dev);
-static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
-static int netdev_close(struct net_device *dev);
-static const struct ethtool_ops ethtool_ops;
-
-static void sundance_reset(struct net_device *dev, unsigned long reset_cmd)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base + ASICCtrl;
- int countdown;
-
- /* ST201 documentation states ASICCtrl is a 32bit register */
- iowrite32 (reset_cmd | ioread32 (ioaddr), ioaddr);
- /* ST201 documentation states reset can take up to 1 ms */
- countdown = 10 + 1;
- while (ioread32 (ioaddr) & (ResetBusy << 16)) {
- if (--countdown == 0) {
- printk(KERN_WARNING "%s : reset not completed !!\n", dev->name);
- break;
- }
- udelay(100);
- }
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void sundance_poll_controller(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
-
- disable_irq(np->pci_dev->irq);
- intr_handler(np->pci_dev->irq, dev);
- enable_irq(np->pci_dev->irq);
-}
-#endif
-
-static const struct net_device_ops netdev_ops = {
- .ndo_open = netdev_open,
- .ndo_stop = netdev_close,
- .ndo_start_xmit = start_tx,
- .ndo_get_stats = get_stats,
- .ndo_set_rx_mode = set_rx_mode,
- .ndo_eth_ioctl = netdev_ioctl,
- .ndo_tx_timeout = tx_timeout,
- .ndo_change_mtu = change_mtu,
- .ndo_set_mac_address = sundance_set_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = sundance_poll_controller,
-#endif
-};
-
-static int sundance_probe1(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- struct net_device *dev;
- struct netdev_private *np;
- static int card_idx;
- int chip_idx = ent->driver_data;
- int irq;
- int i;
- void __iomem *ioaddr;
- u16 mii_ctl;
- void *ring_space;
- dma_addr_t ring_dma;
-#ifdef USE_IO_OPS
- int bar = 0;
-#else
- int bar = 1;
-#endif
- int phy, phy_end, phy_idx = 0;
- __le16 addr[ETH_ALEN / 2];
-
- if (pci_enable_device(pdev))
- return -EIO;
- pci_set_master(pdev);
-
- irq = pdev->irq;
-
- dev = alloc_etherdev(sizeof(*np));
- if (!dev)
- return -ENOMEM;
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- if (pci_request_regions(pdev, DRV_NAME))
- goto err_out_netdev;
-
- ioaddr = pci_iomap(pdev, bar, netdev_io_size);
- if (!ioaddr)
- goto err_out_res;
-
- for (i = 0; i < 3; i++)
- addr[i] =
- cpu_to_le16(eeprom_read(ioaddr, i + EEPROM_SA_OFFSET));
- eth_hw_addr_set(dev, (u8 *)addr);
-
- np = netdev_priv(dev);
- np->ndev = dev;
- np->base = ioaddr;
- np->pci_dev = pdev;
- np->chip_id = chip_idx;
- np->msg_enable = (1 << debug) - 1;
- spin_lock_init(&np->lock);
- spin_lock_init(&np->statlock);
- tasklet_setup(&np->rx_tasklet, rx_poll);
- tasklet_setup(&np->tx_tasklet, tx_poll);
-
- ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE,
- &ring_dma, GFP_KERNEL);
- if (!ring_space)
- goto err_out_cleardev;
- np->tx_ring = (struct netdev_desc *)ring_space;
- np->tx_ring_dma = ring_dma;
-
- ring_space = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE,
- &ring_dma, GFP_KERNEL);
- if (!ring_space)
- goto err_out_unmap_tx;
- np->rx_ring = (struct netdev_desc *)ring_space;
- np->rx_ring_dma = ring_dma;
-
- np->mii_if.dev = dev;
- np->mii_if.mdio_read = mdio_read;
- np->mii_if.mdio_write = mdio_write;
- np->mii_if.phy_id_mask = 0x1f;
- np->mii_if.reg_num_mask = 0x1f;
-
- /* The chip-specific entries in the device structure. */
- dev->netdev_ops = &netdev_ops;
- dev->ethtool_ops = ðtool_ops;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- /* MTU range: 68 - 8191 */
- dev->min_mtu = ETH_MIN_MTU;
- dev->max_mtu = 8191;
-
- pci_set_drvdata(pdev, dev);
-
- i = register_netdev(dev);
- if (i)
- goto err_out_unmap_rx;
-
- printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n",
- dev->name, pci_id_tbl[chip_idx].name, ioaddr,
- dev->dev_addr, irq);
-
- np->phys[0] = 1; /* Default setting */
- np->mii_preamble_required++;
-
- /*
- * It seems some phys doesn't deal well with address 0 being accessed
- * first
- */
- if (sundance_pci_tbl[np->chip_id].device == 0x0200) {
- phy = 0;
- phy_end = 31;
- } else {
- phy = 1;
- phy_end = 32; /* wraps to zero, due to 'phy & 0x1f' */
- }
- for (; phy <= phy_end && phy_idx < MII_CNT; phy++) {
- int phyx = phy & 0x1f;
- int mii_status = mdio_read(dev, phyx, MII_BMSR);
- if (mii_status != 0xffff && mii_status != 0x0000) {
- np->phys[phy_idx++] = phyx;
- np->mii_if.advertising = mdio_read(dev, phyx, MII_ADVERTISE);
- if ((mii_status & 0x0040) == 0)
- np->mii_preamble_required++;
- printk(KERN_INFO "%s: MII PHY found at address %d, status "
- "0x%4.4x advertising %4.4x.\n",
- dev->name, phyx, mii_status, np->mii_if.advertising);
- }
- }
- np->mii_preamble_required--;
-
- if (phy_idx == 0) {
- printk(KERN_INFO "%s: No MII transceiver found, aborting. ASIC status %x\n",
- dev->name, ioread32(ioaddr + ASICCtrl));
- goto err_out_unregister;
- }
-
- np->mii_if.phy_id = np->phys[0];
-
- /* Parse override configuration */
- np->an_enable = 1;
- if (card_idx < MAX_UNITS) {
- if (media[card_idx] != NULL) {
- np->an_enable = 0;
- if (strcmp (media[card_idx], "100mbps_fd") == 0 ||
- strcmp (media[card_idx], "4") == 0) {
- np->speed = 100;
- np->mii_if.full_duplex = 1;
- } else if (strcmp (media[card_idx], "100mbps_hd") == 0 ||
- strcmp (media[card_idx], "3") == 0) {
- np->speed = 100;
- np->mii_if.full_duplex = 0;
- } else if (strcmp (media[card_idx], "10mbps_fd") == 0 ||
- strcmp (media[card_idx], "2") == 0) {
- np->speed = 10;
- np->mii_if.full_duplex = 1;
- } else if (strcmp (media[card_idx], "10mbps_hd") == 0 ||
- strcmp (media[card_idx], "1") == 0) {
- np->speed = 10;
- np->mii_if.full_duplex = 0;
- } else {
- np->an_enable = 1;
- }
- }
- if (flowctrl == 1)
- np->flowctrl = 1;
- }
-
- /* Fibre PHY? */
- if (ioread32 (ioaddr + ASICCtrl) & 0x80) {
- /* Default 100Mbps Full */
- if (np->an_enable) {
- np->speed = 100;
- np->mii_if.full_duplex = 1;
- np->an_enable = 0;
- }
- }
- /* Reset PHY */
- mdio_write (dev, np->phys[0], MII_BMCR, BMCR_RESET);
- mdelay (300);
- /* If flow control enabled, we need to advertise it.*/
- if (np->flowctrl)
- mdio_write (dev, np->phys[0], MII_ADVERTISE, np->mii_if.advertising | 0x0400);
- mdio_write (dev, np->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART);
- /* Force media type */
- if (!np->an_enable) {
- mii_ctl = 0;
- mii_ctl |= (np->speed == 100) ? BMCR_SPEED100 : 0;
- mii_ctl |= (np->mii_if.full_duplex) ? BMCR_FULLDPLX : 0;
- mdio_write (dev, np->phys[0], MII_BMCR, mii_ctl);
- printk (KERN_INFO "Override speed=%d, %s duplex\n",
- np->speed, np->mii_if.full_duplex ? "Full" : "Half");
-
- }
-
- /* Perhaps move the reset here? */
- /* Reset the chip to erase previous misconfiguration. */
- if (netif_msg_hw(np))
- printk("ASIC Control is %x.\n", ioread32(ioaddr + ASICCtrl));
- sundance_reset(dev, 0x00ff << 16);
- if (netif_msg_hw(np))
- printk("ASIC Control is now %x.\n", ioread32(ioaddr + ASICCtrl));
-
- card_idx++;
- return 0;
-
-err_out_unregister:
- unregister_netdev(dev);
-err_out_unmap_rx:
- dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE,
- np->rx_ring, np->rx_ring_dma);
-err_out_unmap_tx:
- dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE,
- np->tx_ring, np->tx_ring_dma);
-err_out_cleardev:
- pci_iounmap(pdev, ioaddr);
-err_out_res:
- pci_release_regions(pdev);
-err_out_netdev:
- free_netdev (dev);
- return -ENODEV;
-}
-
-static int change_mtu(struct net_device *dev, int new_mtu)
-{
- if (netif_running(dev))
- return -EBUSY;
- WRITE_ONCE(dev->mtu, new_mtu);
- return 0;
-}
-
-#define eeprom_delay(ee_addr) ioread32(ee_addr)
-/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. */
-static int eeprom_read(void __iomem *ioaddr, int location)
-{
- int boguscnt = 10000; /* Typical 1900 ticks. */
- iowrite16(0x0200 | (location & 0xff), ioaddr + EECtrl);
- do {
- eeprom_delay(ioaddr + EECtrl);
- if (! (ioread16(ioaddr + EECtrl) & 0x8000)) {
- return ioread16(ioaddr + EEData);
- }
- } while (--boguscnt > 0);
- return 0;
-}
-
-/* MII transceiver control section.
- Read and write the MII registers using software-generated serial
- MDIO protocol. See the MII specifications or DP83840A data sheet
- for details.
-
- The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
- met by back-to-back 33Mhz PCI cycles. */
-#define mdio_delay() ioread8(mdio_addr)
-
-enum mii_reg_bits {
- MDIO_ShiftClk=0x0001, MDIO_Data=0x0002, MDIO_EnbOutput=0x0004,
-};
-#define MDIO_EnbIn (0)
-#define MDIO_WRITE0 (MDIO_EnbOutput)
-#define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput)
-
-/* Generate the preamble required for initial synchronization and
- a few older transceivers. */
-static void mdio_sync(void __iomem *mdio_addr)
-{
- int bits = 32;
-
- /* Establish sync by sending at least 32 logic ones. */
- while (--bits >= 0) {
- iowrite8(MDIO_WRITE1, mdio_addr);
- mdio_delay();
- iowrite8(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr);
- mdio_delay();
- }
-}
-
-static int mdio_read(struct net_device *dev, int phy_id, int location)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *mdio_addr = np->base + MIICtrl;
- int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
- int i, retval = 0;
-
- if (np->mii_preamble_required)
- mdio_sync(mdio_addr);
-
- /* Shift the read command bits out. */
- for (i = 15; i >= 0; i--) {
- int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
-
- iowrite8(dataval, mdio_addr);
- mdio_delay();
- iowrite8(dataval | MDIO_ShiftClk, mdio_addr);
- mdio_delay();
- }
- /* Read the two transition, 16 data, and wire-idle bits. */
- for (i = 19; i > 0; i--) {
- iowrite8(MDIO_EnbIn, mdio_addr);
- mdio_delay();
- retval = (retval << 1) | ((ioread8(mdio_addr) & MDIO_Data) ? 1 : 0);
- iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
- mdio_delay();
- }
- return (retval>>1) & 0xffff;
-}
-
-static void mdio_write(struct net_device *dev, int phy_id, int location, int value)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *mdio_addr = np->base + MIICtrl;
- int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value;
- int i;
-
- if (np->mii_preamble_required)
- mdio_sync(mdio_addr);
-
- /* Shift the command bits out. */
- for (i = 31; i >= 0; i--) {
- int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
-
- iowrite8(dataval, mdio_addr);
- mdio_delay();
- iowrite8(dataval | MDIO_ShiftClk, mdio_addr);
- mdio_delay();
- }
- /* Clear out extra bits. */
- for (i = 2; i > 0; i--) {
- iowrite8(MDIO_EnbIn, mdio_addr);
- mdio_delay();
- iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr);
- mdio_delay();
- }
-}
-
-static int mdio_wait_link(struct net_device *dev, int wait)
-{
- int bmsr;
- int phy_id;
- struct netdev_private *np;
-
- np = netdev_priv(dev);
- phy_id = np->phys[0];
-
- do {
- bmsr = mdio_read(dev, phy_id, MII_BMSR);
- if (bmsr & 0x0004)
- return 0;
- mdelay(1);
- } while (--wait > 0);
- return -1;
-}
-
-static int netdev_open(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- const int irq = np->pci_dev->irq;
- unsigned long flags;
- int i;
-
- sundance_reset(dev, 0x00ff << 16);
-
- i = request_irq(irq, intr_handler, IRQF_SHARED, dev->name, dev);
- if (i)
- return i;
-
- if (netif_msg_ifup(np))
- printk(KERN_DEBUG "%s: netdev_open() irq %d\n", dev->name, irq);
-
- init_ring(dev);
-
- iowrite32(np->rx_ring_dma, ioaddr + RxListPtr);
- /* The Tx list pointer is written as packets are queued. */
-
- /* Initialize other registers. */
- __set_mac_addr(dev);
-#if IS_ENABLED(CONFIG_VLAN_8021Q)
- iowrite16(dev->mtu + 18, ioaddr + MaxFrameSize);
-#else
- iowrite16(dev->mtu + 14, ioaddr + MaxFrameSize);
-#endif
- if (dev->mtu > 2047)
- iowrite32(ioread32(ioaddr + ASICCtrl) | 0x0C, ioaddr + ASICCtrl);
-
- /* Configure the PCI bus bursts and FIFO thresholds. */
-
- if (dev->if_port == 0)
- dev->if_port = np->default_port;
-
- spin_lock_init(&np->mcastlock);
-
- set_rx_mode(dev);
- iowrite16(0, ioaddr + IntrEnable);
- iowrite16(0, ioaddr + DownCounter);
- /* Set the chip to poll every N*320nsec. */
- iowrite8(100, ioaddr + RxDMAPollPeriod);
- iowrite8(127, ioaddr + TxDMAPollPeriod);
- /* Fix DFE-580TX packet drop issue */
- if (np->pci_dev->revision >= 0x14)
- iowrite8(0x01, ioaddr + DebugCtrl1);
- netif_start_queue(dev);
-
- spin_lock_irqsave(&np->lock, flags);
- reset_tx(dev);
- spin_unlock_irqrestore(&np->lock, flags);
-
- iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
-
- /* Disable Wol */
- iowrite8(ioread8(ioaddr + WakeEvent) | 0x00, ioaddr + WakeEvent);
- np->wol_enabled = 0;
-
- if (netif_msg_ifup(np))
- printk(KERN_DEBUG "%s: Done netdev_open(), status: Rx %x Tx %x "
- "MAC Control %x, %4.4x %4.4x.\n",
- dev->name, ioread32(ioaddr + RxStatus), ioread8(ioaddr + TxStatus),
- ioread32(ioaddr + MACCtrl0),
- ioread16(ioaddr + MACCtrl1), ioread16(ioaddr + MACCtrl0));
-
- /* Set the timer to check for link beat. */
- timer_setup(&np->timer, netdev_timer, 0);
- np->timer.expires = jiffies + 3*HZ;
- add_timer(&np->timer);
-
- /* Enable interrupts by setting the interrupt mask. */
- iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
-
- return 0;
-}
-
-static void check_duplex(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- int mii_lpa = mdio_read(dev, np->phys[0], MII_LPA);
- int negotiated = mii_lpa & np->mii_if.advertising;
- int duplex;
-
- /* Force media */
- if (!np->an_enable || mii_lpa == 0xffff) {
- if (np->mii_if.full_duplex)
- iowrite16 (ioread16 (ioaddr + MACCtrl0) | EnbFullDuplex,
- ioaddr + MACCtrl0);
- return;
- }
-
- /* Autonegotiation */
- duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040;
- if (np->mii_if.full_duplex != duplex) {
- np->mii_if.full_duplex = duplex;
- if (netif_msg_link(np))
- printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d "
- "negotiated capability %4.4x.\n", dev->name,
- duplex ? "full" : "half", np->phys[0], negotiated);
- iowrite16(ioread16(ioaddr + MACCtrl0) | (duplex ? 0x20 : 0), ioaddr + MACCtrl0);
- }
-}
-
-static void netdev_timer(struct timer_list *t)
-{
- struct netdev_private *np = from_timer(np, t, timer);
- struct net_device *dev = np->mii_if.dev;
- void __iomem *ioaddr = np->base;
- int next_tick = 10*HZ;
-
- if (netif_msg_timer(np)) {
- printk(KERN_DEBUG "%s: Media selection timer tick, intr status %4.4x, "
- "Tx %x Rx %x.\n",
- dev->name, ioread16(ioaddr + IntrEnable),
- ioread8(ioaddr + TxStatus), ioread32(ioaddr + RxStatus));
- }
- check_duplex(dev);
- np->timer.expires = jiffies + next_tick;
- add_timer(&np->timer);
-}
-
-static void tx_timeout(struct net_device *dev, unsigned int txqueue)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- unsigned long flag;
-
- netif_stop_queue(dev);
- tasklet_disable_in_atomic(&np->tx_tasklet);
- iowrite16(0, ioaddr + IntrEnable);
- printk(KERN_WARNING "%s: Transmit timed out, TxStatus %2.2x "
- "TxFrameId %2.2x,"
- " resetting...\n", dev->name, ioread8(ioaddr + TxStatus),
- ioread8(ioaddr + TxFrameId));
-
- {
- int i;
- for (i=0; i<TX_RING_SIZE; i++) {
- printk(KERN_DEBUG "%02x %08llx %08x %08x(%02x) %08x %08x\n", i,
- (unsigned long long)(np->tx_ring_dma + i*sizeof(*np->tx_ring)),
- le32_to_cpu(np->tx_ring[i].next_desc),
- le32_to_cpu(np->tx_ring[i].status),
- (le32_to_cpu(np->tx_ring[i].status) >> 2) & 0xff,
- le32_to_cpu(np->tx_ring[i].frag.addr),
- le32_to_cpu(np->tx_ring[i].frag.length));
- }
- printk(KERN_DEBUG "TxListPtr=%08x netif_queue_stopped=%d\n",
- ioread32(np->base + TxListPtr),
- netif_queue_stopped(dev));
- printk(KERN_DEBUG "cur_tx=%d(%02x) dirty_tx=%d(%02x)\n",
- np->cur_tx, np->cur_tx % TX_RING_SIZE,
- np->dirty_tx, np->dirty_tx % TX_RING_SIZE);
- printk(KERN_DEBUG "cur_rx=%d dirty_rx=%d\n", np->cur_rx, np->dirty_rx);
- printk(KERN_DEBUG "cur_task=%d\n", np->cur_task);
- }
- spin_lock_irqsave(&np->lock, flag);
-
- /* Stop and restart the chip's Tx processes . */
- reset_tx(dev);
- spin_unlock_irqrestore(&np->lock, flag);
-
- dev->if_port = 0;
-
- netif_trans_update(dev); /* prevent tx timeout */
- dev->stats.tx_errors++;
- if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
- netif_wake_queue(dev);
- }
- iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
- tasklet_enable(&np->tx_tasklet);
-}
-
-
-/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
-static void init_ring(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- int i;
-
- np->cur_rx = np->cur_tx = 0;
- np->dirty_rx = np->dirty_tx = 0;
- np->cur_task = 0;
-
- np->rx_buf_sz = (dev->mtu <= 1520 ? PKT_BUF_SZ : dev->mtu + 16);
-
- /* Initialize all Rx descriptors. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- np->rx_ring[i].next_desc = cpu_to_le32(np->rx_ring_dma +
- ((i+1)%RX_RING_SIZE)*sizeof(*np->rx_ring));
- np->rx_ring[i].status = 0;
- np->rx_ring[i].frag.length = 0;
- np->rx_skbuff[i] = NULL;
- }
-
- /* Fill in the Rx buffers. Handle allocation failure gracefully. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- struct sk_buff *skb =
- netdev_alloc_skb(dev, np->rx_buf_sz + 2);
- np->rx_skbuff[i] = skb;
- if (skb == NULL)
- break;
- skb_reserve(skb, 2); /* 16 byte align the IP header. */
- np->rx_ring[i].frag.addr = cpu_to_le32(
- dma_map_single(&np->pci_dev->dev, skb->data,
- np->rx_buf_sz, DMA_FROM_DEVICE));
- if (dma_mapping_error(&np->pci_dev->dev,
- np->rx_ring[i].frag.addr)) {
- dev_kfree_skb(skb);
- np->rx_skbuff[i] = NULL;
- break;
- }
- np->rx_ring[i].frag.length = cpu_to_le32(np->rx_buf_sz | LastFrag);
- }
- np->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
-
- for (i = 0; i < TX_RING_SIZE; i++) {
- np->tx_skbuff[i] = NULL;
- np->tx_ring[i].status = 0;
- }
-}
-
-static void tx_poll(struct tasklet_struct *t)
-{
- struct netdev_private *np = from_tasklet(np, t, tx_tasklet);
- unsigned head = np->cur_task % TX_RING_SIZE;
- struct netdev_desc *txdesc =
- &np->tx_ring[(np->cur_tx - 1) % TX_RING_SIZE];
-
- /* Chain the next pointer */
- for (; np->cur_tx - np->cur_task > 0; np->cur_task++) {
- int entry = np->cur_task % TX_RING_SIZE;
- txdesc = &np->tx_ring[entry];
- if (np->last_tx) {
- np->last_tx->next_desc = cpu_to_le32(np->tx_ring_dma +
- entry*sizeof(struct netdev_desc));
- }
- np->last_tx = txdesc;
- }
- /* Indicate the latest descriptor of tx ring */
- txdesc->status |= cpu_to_le32(DescIntrOnTx);
-
- if (ioread32 (np->base + TxListPtr) == 0)
- iowrite32 (np->tx_ring_dma + head * sizeof(struct netdev_desc),
- np->base + TxListPtr);
-}
-
-static netdev_tx_t
-start_tx (struct sk_buff *skb, struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- struct netdev_desc *txdesc;
- unsigned entry;
-
- /* Calculate the next Tx descriptor entry. */
- entry = np->cur_tx % TX_RING_SIZE;
- np->tx_skbuff[entry] = skb;
- txdesc = &np->tx_ring[entry];
-
- txdesc->next_desc = 0;
- txdesc->status = cpu_to_le32 ((entry << 2) | DisableAlign);
- txdesc->frag.addr = cpu_to_le32(dma_map_single(&np->pci_dev->dev,
- skb->data, skb->len, DMA_TO_DEVICE));
- if (dma_mapping_error(&np->pci_dev->dev,
- txdesc->frag.addr))
- goto drop_frame;
- txdesc->frag.length = cpu_to_le32 (skb->len | LastFrag);
-
- /* Increment cur_tx before tasklet_schedule() */
- np->cur_tx++;
- mb();
- /* Schedule a tx_poll() task */
- tasklet_schedule(&np->tx_tasklet);
-
- /* On some architectures: explicitly flush cache lines here. */
- if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 1 &&
- !netif_queue_stopped(dev)) {
- /* do nothing */
- } else {
- netif_stop_queue (dev);
- }
- if (netif_msg_tx_queued(np)) {
- printk (KERN_DEBUG
- "%s: Transmit frame #%d queued in slot %d.\n",
- dev->name, np->cur_tx, entry);
- }
- return NETDEV_TX_OK;
-
-drop_frame:
- dev_kfree_skb_any(skb);
- np->tx_skbuff[entry] = NULL;
- dev->stats.tx_dropped++;
- return NETDEV_TX_OK;
-}
-
-/* Reset hardware tx and free all of tx buffers */
-static int
-reset_tx (struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- struct sk_buff *skb;
- int i;
-
- /* Reset tx logic, TxListPtr will be cleaned */
- iowrite16 (TxDisable, ioaddr + MACCtrl1);
- sundance_reset(dev, (NetworkReset|FIFOReset|DMAReset|TxReset) << 16);
-
- /* free all tx skbuff */
- for (i = 0; i < TX_RING_SIZE; i++) {
- np->tx_ring[i].next_desc = 0;
-
- skb = np->tx_skbuff[i];
- if (skb) {
- dma_unmap_single(&np->pci_dev->dev,
- le32_to_cpu(np->tx_ring[i].frag.addr),
- skb->len, DMA_TO_DEVICE);
- dev_kfree_skb_any(skb);
- np->tx_skbuff[i] = NULL;
- dev->stats.tx_dropped++;
- }
- }
- np->cur_tx = np->dirty_tx = 0;
- np->cur_task = 0;
-
- np->last_tx = NULL;
- iowrite8(127, ioaddr + TxDMAPollPeriod);
-
- iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1);
- return 0;
-}
-
-/* The interrupt handler cleans up after the Tx thread,
- and schedule a Rx thread work */
-static irqreturn_t intr_handler(int irq, void *dev_instance)
-{
- struct net_device *dev = (struct net_device *)dev_instance;
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- int hw_frame_id;
- int tx_cnt;
- int tx_status;
- int handled = 0;
- int i;
-
- do {
- int intr_status = ioread16(ioaddr + IntrStatus);
- iowrite16(intr_status, ioaddr + IntrStatus);
-
- if (netif_msg_intr(np))
- printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n",
- dev->name, intr_status);
-
- if (!(intr_status & DEFAULT_INTR))
- break;
-
- handled = 1;
-
- if (intr_status & (IntrRxDMADone)) {
- iowrite16(DEFAULT_INTR & ~(IntrRxDone|IntrRxDMADone),
- ioaddr + IntrEnable);
- if (np->budget < 0)
- np->budget = RX_BUDGET;
- tasklet_schedule(&np->rx_tasklet);
- }
- if (intr_status & (IntrTxDone | IntrDrvRqst)) {
- tx_status = ioread16 (ioaddr + TxStatus);
- for (tx_cnt=32; tx_status & 0x80; --tx_cnt) {
- if (netif_msg_tx_done(np))
- printk
- ("%s: Transmit status is %2.2x.\n",
- dev->name, tx_status);
- if (tx_status & 0x1e) {
- if (netif_msg_tx_err(np))
- printk("%s: Transmit error status %4.4x.\n",
- dev->name, tx_status);
- dev->stats.tx_errors++;
- if (tx_status & 0x10)
- dev->stats.tx_fifo_errors++;
- if (tx_status & 0x08)
- dev->stats.collisions++;
- if (tx_status & 0x04)
- dev->stats.tx_fifo_errors++;
- if (tx_status & 0x02)
- dev->stats.tx_window_errors++;
-
- /*
- ** This reset has been verified on
- ** DFE-580TX boards ! phdm@...qel.be.
- */
- if (tx_status & 0x10) { /* TxUnderrun */
- /* Restart Tx FIFO and transmitter */
- sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16);
- /* No need to reset the Tx pointer here */
- }
- /* Restart the Tx. Need to make sure tx enabled */
- i = 10;
- do {
- iowrite16(ioread16(ioaddr + MACCtrl1) | TxEnable, ioaddr + MACCtrl1);
- if (ioread16(ioaddr + MACCtrl1) & TxEnabled)
- break;
- mdelay(1);
- } while (--i);
- }
- /* Yup, this is a documentation bug. It cost me *hours*. */
- iowrite16 (0, ioaddr + TxStatus);
- if (tx_cnt < 0) {
- iowrite32(5000, ioaddr + DownCounter);
- break;
- }
- tx_status = ioread16 (ioaddr + TxStatus);
- }
- hw_frame_id = (tx_status >> 8) & 0xff;
- } else {
- hw_frame_id = ioread8(ioaddr + TxFrameId);
- }
-
- if (np->pci_dev->revision >= 0x14) {
- spin_lock(&np->lock);
- for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
- int entry = np->dirty_tx % TX_RING_SIZE;
- struct sk_buff *skb;
- int sw_frame_id;
- sw_frame_id = (le32_to_cpu(
- np->tx_ring[entry].status) >> 2) & 0xff;
- if (sw_frame_id == hw_frame_id &&
- !(le32_to_cpu(np->tx_ring[entry].status)
- & 0x00010000))
- break;
- if (sw_frame_id == (hw_frame_id + 1) %
- TX_RING_SIZE)
- break;
- skb = np->tx_skbuff[entry];
- /* Free the original skb. */
- dma_unmap_single(&np->pci_dev->dev,
- le32_to_cpu(np->tx_ring[entry].frag.addr),
- skb->len, DMA_TO_DEVICE);
- dev_consume_skb_irq(np->tx_skbuff[entry]);
- np->tx_skbuff[entry] = NULL;
- np->tx_ring[entry].frag.addr = 0;
- np->tx_ring[entry].frag.length = 0;
- }
- spin_unlock(&np->lock);
- } else {
- spin_lock(&np->lock);
- for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
- int entry = np->dirty_tx % TX_RING_SIZE;
- struct sk_buff *skb;
- if (!(le32_to_cpu(np->tx_ring[entry].status)
- & 0x00010000))
- break;
- skb = np->tx_skbuff[entry];
- /* Free the original skb. */
- dma_unmap_single(&np->pci_dev->dev,
- le32_to_cpu(np->tx_ring[entry].frag.addr),
- skb->len, DMA_TO_DEVICE);
- dev_consume_skb_irq(np->tx_skbuff[entry]);
- np->tx_skbuff[entry] = NULL;
- np->tx_ring[entry].frag.addr = 0;
- np->tx_ring[entry].frag.length = 0;
- }
- spin_unlock(&np->lock);
- }
-
- if (netif_queue_stopped(dev) &&
- np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) {
- /* The ring is no longer full, clear busy flag. */
- netif_wake_queue (dev);
- }
- /* Abnormal error summary/uncommon events handlers. */
- if (intr_status & (IntrPCIErr | LinkChange | StatsMax))
- netdev_error(dev, intr_status);
- } while (0);
- if (netif_msg_intr(np))
- printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n",
- dev->name, ioread16(ioaddr + IntrStatus));
- return IRQ_RETVAL(handled);
-}
-
-static void rx_poll(struct tasklet_struct *t)
-{
- struct netdev_private *np = from_tasklet(np, t, rx_tasklet);
- struct net_device *dev = np->ndev;
- int entry = np->cur_rx % RX_RING_SIZE;
- int boguscnt = np->budget;
- void __iomem *ioaddr = np->base;
- int received = 0;
-
- /* If EOP is set on the next entry, it's a new packet. Send it up. */
- while (1) {
- struct netdev_desc *desc = &(np->rx_ring[entry]);
- u32 frame_status = le32_to_cpu(desc->status);
- int pkt_len;
-
- if (--boguscnt < 0) {
- goto not_done;
- }
- if (!(frame_status & DescOwn))
- break;
- pkt_len = frame_status & 0x1fff; /* Chip omits the CRC. */
- if (netif_msg_rx_status(np))
- printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n",
- frame_status);
- if (frame_status & 0x001f4000) {
- /* There was a error. */
- if (netif_msg_rx_err(np))
- printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n",
- frame_status);
- dev->stats.rx_errors++;
- if (frame_status & 0x00100000)
- dev->stats.rx_length_errors++;
- if (frame_status & 0x00010000)
- dev->stats.rx_fifo_errors++;
- if (frame_status & 0x00060000)
- dev->stats.rx_frame_errors++;
- if (frame_status & 0x00080000)
- dev->stats.rx_crc_errors++;
- if (frame_status & 0x00100000) {
- printk(KERN_WARNING "%s: Oversized Ethernet frame,"
- " status %8.8x.\n",
- dev->name, frame_status);
- }
- } else {
- struct sk_buff *skb;
-#ifndef final_version
- if (netif_msg_rx_status(np))
- printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d"
- ", bogus_cnt %d.\n",
- pkt_len, boguscnt);
-#endif
- /* Check if the packet is long enough to accept without copying
- to a minimally-sized skbuff. */
- if (pkt_len < rx_copybreak &&
- (skb = netdev_alloc_skb(dev, pkt_len + 2)) != NULL) {
- skb_reserve(skb, 2); /* 16 byte align the IP header */
- dma_sync_single_for_cpu(&np->pci_dev->dev,
- le32_to_cpu(desc->frag.addr),
- np->rx_buf_sz, DMA_FROM_DEVICE);
- skb_copy_to_linear_data(skb, np->rx_skbuff[entry]->data, pkt_len);
- dma_sync_single_for_device(&np->pci_dev->dev,
- le32_to_cpu(desc->frag.addr),
- np->rx_buf_sz, DMA_FROM_DEVICE);
- skb_put(skb, pkt_len);
- } else {
- dma_unmap_single(&np->pci_dev->dev,
- le32_to_cpu(desc->frag.addr),
- np->rx_buf_sz, DMA_FROM_DEVICE);
- skb_put(skb = np->rx_skbuff[entry], pkt_len);
- np->rx_skbuff[entry] = NULL;
- }
- skb->protocol = eth_type_trans(skb, dev);
- /* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */
- netif_rx(skb);
- }
- entry = (entry + 1) % RX_RING_SIZE;
- received++;
- }
- np->cur_rx = entry;
- refill_rx (dev);
- np->budget -= received;
- iowrite16(DEFAULT_INTR, ioaddr + IntrEnable);
- return;
-
-not_done:
- np->cur_rx = entry;
- refill_rx (dev);
- if (!received)
- received = 1;
- np->budget -= received;
- if (np->budget <= 0)
- np->budget = RX_BUDGET;
- tasklet_schedule(&np->rx_tasklet);
-}
-
-static void refill_rx (struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- int entry;
-
- /* Refill the Rx ring buffers. */
- for (;(np->cur_rx - np->dirty_rx + RX_RING_SIZE) % RX_RING_SIZE > 0;
- np->dirty_rx = (np->dirty_rx + 1) % RX_RING_SIZE) {
- struct sk_buff *skb;
- entry = np->dirty_rx % RX_RING_SIZE;
- if (np->rx_skbuff[entry] == NULL) {
- skb = netdev_alloc_skb(dev, np->rx_buf_sz + 2);
- np->rx_skbuff[entry] = skb;
- if (skb == NULL)
- break; /* Better luck next round. */
- skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */
- np->rx_ring[entry].frag.addr = cpu_to_le32(
- dma_map_single(&np->pci_dev->dev, skb->data,
- np->rx_buf_sz, DMA_FROM_DEVICE));
- if (dma_mapping_error(&np->pci_dev->dev,
- np->rx_ring[entry].frag.addr)) {
- dev_kfree_skb_irq(skb);
- np->rx_skbuff[entry] = NULL;
- break;
- }
- }
- /* Perhaps we need not reset this field. */
- np->rx_ring[entry].frag.length =
- cpu_to_le32(np->rx_buf_sz | LastFrag);
- np->rx_ring[entry].status = 0;
- }
-}
-static void netdev_error(struct net_device *dev, int intr_status)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- u16 mii_ctl, mii_advertise, mii_lpa;
- int speed;
-
- if (intr_status & LinkChange) {
- if (mdio_wait_link(dev, 10) == 0) {
- printk(KERN_INFO "%s: Link up\n", dev->name);
- if (np->an_enable) {
- mii_advertise = mdio_read(dev, np->phys[0],
- MII_ADVERTISE);
- mii_lpa = mdio_read(dev, np->phys[0], MII_LPA);
- mii_advertise &= mii_lpa;
- printk(KERN_INFO "%s: Link changed: ",
- dev->name);
- if (mii_advertise & ADVERTISE_100FULL) {
- np->speed = 100;
- printk("100Mbps, full duplex\n");
- } else if (mii_advertise & ADVERTISE_100HALF) {
- np->speed = 100;
- printk("100Mbps, half duplex\n");
- } else if (mii_advertise & ADVERTISE_10FULL) {
- np->speed = 10;
- printk("10Mbps, full duplex\n");
- } else if (mii_advertise & ADVERTISE_10HALF) {
- np->speed = 10;
- printk("10Mbps, half duplex\n");
- } else
- printk("\n");
-
- } else {
- mii_ctl = mdio_read(dev, np->phys[0], MII_BMCR);
- speed = (mii_ctl & BMCR_SPEED100) ? 100 : 10;
- np->speed = speed;
- printk(KERN_INFO "%s: Link changed: %dMbps ,",
- dev->name, speed);
- printk("%s duplex.\n",
- (mii_ctl & BMCR_FULLDPLX) ?
- "full" : "half");
- }
- check_duplex(dev);
- if (np->flowctrl && np->mii_if.full_duplex) {
- iowrite16(ioread16(ioaddr + MulticastFilter1+2) | 0x0200,
- ioaddr + MulticastFilter1+2);
- iowrite16(ioread16(ioaddr + MACCtrl0) | EnbFlowCtrl,
- ioaddr + MACCtrl0);
- }
- netif_carrier_on(dev);
- } else {
- printk(KERN_INFO "%s: Link down\n", dev->name);
- netif_carrier_off(dev);
- }
- }
- if (intr_status & StatsMax) {
- get_stats(dev);
- }
- if (intr_status & IntrPCIErr) {
- printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n",
- dev->name, intr_status);
- /* We must do a global reset of DMA to continue. */
- }
-}
-
-static struct net_device_stats *get_stats(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- unsigned long flags;
- u8 late_coll, single_coll, mult_coll;
-
- spin_lock_irqsave(&np->statlock, flags);
- /* The chip only need report frame silently dropped. */
- dev->stats.rx_missed_errors += ioread8(ioaddr + RxMissed);
- dev->stats.tx_packets += ioread16(ioaddr + TxFramesOK);
- dev->stats.rx_packets += ioread16(ioaddr + RxFramesOK);
- dev->stats.tx_carrier_errors += ioread8(ioaddr + StatsCarrierError);
-
- mult_coll = ioread8(ioaddr + StatsMultiColl);
- np->xstats.tx_multiple_collisions += mult_coll;
- single_coll = ioread8(ioaddr + StatsOneColl);
- np->xstats.tx_single_collisions += single_coll;
- late_coll = ioread8(ioaddr + StatsLateColl);
- np->xstats.tx_late_collisions += late_coll;
- dev->stats.collisions += mult_coll
- + single_coll
- + late_coll;
-
- np->xstats.tx_deferred += ioread8(ioaddr + StatsTxDefer);
- np->xstats.tx_deferred_excessive += ioread8(ioaddr + StatsTxXSDefer);
- np->xstats.tx_aborted += ioread8(ioaddr + StatsTxAbort);
- np->xstats.tx_bcasts += ioread8(ioaddr + StatsBcastTx);
- np->xstats.rx_bcasts += ioread8(ioaddr + StatsBcastRx);
- np->xstats.tx_mcasts += ioread8(ioaddr + StatsMcastTx);
- np->xstats.rx_mcasts += ioread8(ioaddr + StatsMcastRx);
-
- dev->stats.tx_bytes += ioread16(ioaddr + TxOctetsLow);
- dev->stats.tx_bytes += ioread16(ioaddr + TxOctetsHigh) << 16;
- dev->stats.rx_bytes += ioread16(ioaddr + RxOctetsLow);
- dev->stats.rx_bytes += ioread16(ioaddr + RxOctetsHigh) << 16;
-
- spin_unlock_irqrestore(&np->statlock, flags);
-
- return &dev->stats;
-}
-
-static void set_rx_mode(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- u16 mc_filter[4]; /* Multicast hash filter */
- u32 rx_mode;
- int i;
-
- if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
- memset(mc_filter, 0xff, sizeof(mc_filter));
- rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAll | AcceptMyPhys;
- } else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
- (dev->flags & IFF_ALLMULTI)) {
- /* Too many to match, or accept all multicasts. */
- memset(mc_filter, 0xff, sizeof(mc_filter));
- rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
- } else if (!netdev_mc_empty(dev)) {
- struct netdev_hw_addr *ha;
- int bit;
- int index;
- int crc;
- memset (mc_filter, 0, sizeof (mc_filter));
- netdev_for_each_mc_addr(ha, dev) {
- crc = ether_crc_le(ETH_ALEN, ha->addr);
- for (index=0, bit=0; bit < 6; bit++, crc <<= 1)
- if (crc & 0x80000000) index |= 1 << bit;
- mc_filter[index/16] |= (1 << (index % 16));
- }
- rx_mode = AcceptBroadcast | AcceptMultiHash | AcceptMyPhys;
- } else {
- iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode);
- return;
- }
- if (np->mii_if.full_duplex && np->flowctrl)
- mc_filter[3] |= 0x0200;
-
- for (i = 0; i < 4; i++)
- iowrite16(mc_filter[i], ioaddr + MulticastFilter0 + i*2);
- iowrite8(rx_mode, ioaddr + RxMode);
-}
-
-static int __set_mac_addr(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- u16 addr16;
-
- addr16 = (dev->dev_addr[0] | (dev->dev_addr[1] << 8));
- iowrite16(addr16, np->base + StationAddr);
- addr16 = (dev->dev_addr[2] | (dev->dev_addr[3] << 8));
- iowrite16(addr16, np->base + StationAddr+2);
- addr16 = (dev->dev_addr[4] | (dev->dev_addr[5] << 8));
- iowrite16(addr16, np->base + StationAddr+4);
- return 0;
-}
-
-/* Invoked with rtnl_lock held */
-static int sundance_set_mac_addr(struct net_device *dev, void *data)
-{
- const struct sockaddr *addr = data;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
- eth_hw_addr_set(dev, addr->sa_data);
- __set_mac_addr(dev);
-
- return 0;
-}
-
-static const struct {
- const char name[ETH_GSTRING_LEN];
-} sundance_stats[] = {
- { "tx_multiple_collisions" },
- { "tx_single_collisions" },
- { "tx_late_collisions" },
- { "tx_deferred" },
- { "tx_deferred_excessive" },
- { "tx_aborted" },
- { "tx_bcasts" },
- { "rx_bcasts" },
- { "tx_mcasts" },
- { "rx_mcasts" },
-};
-
-static int check_if_running(struct net_device *dev)
-{
- if (!netif_running(dev))
- return -EINVAL;
- return 0;
-}
-
-static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
- struct netdev_private *np = netdev_priv(dev);
- strscpy(info->driver, DRV_NAME, sizeof(info->driver));
- strscpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info));
-}
-
-static int get_link_ksettings(struct net_device *dev,
- struct ethtool_link_ksettings *cmd)
-{
- struct netdev_private *np = netdev_priv(dev);
- spin_lock_irq(&np->lock);
- mii_ethtool_get_link_ksettings(&np->mii_if, cmd);
- spin_unlock_irq(&np->lock);
- return 0;
-}
-
-static int set_link_ksettings(struct net_device *dev,
- const struct ethtool_link_ksettings *cmd)
-{
- struct netdev_private *np = netdev_priv(dev);
- int res;
- spin_lock_irq(&np->lock);
- res = mii_ethtool_set_link_ksettings(&np->mii_if, cmd);
- spin_unlock_irq(&np->lock);
- return res;
-}
-
-static int nway_reset(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- return mii_nway_restart(&np->mii_if);
-}
-
-static u32 get_link(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- return mii_link_ok(&np->mii_if);
-}
-
-static u32 get_msglevel(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- return np->msg_enable;
-}
-
-static void set_msglevel(struct net_device *dev, u32 val)
-{
- struct netdev_private *np = netdev_priv(dev);
- np->msg_enable = val;
-}
-
-static void get_strings(struct net_device *dev, u32 stringset,
- u8 *data)
-{
- if (stringset == ETH_SS_STATS)
- memcpy(data, sundance_stats, sizeof(sundance_stats));
-}
-
-static int get_sset_count(struct net_device *dev, int sset)
-{
- switch (sset) {
- case ETH_SS_STATS:
- return ARRAY_SIZE(sundance_stats);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static void get_ethtool_stats(struct net_device *dev,
- struct ethtool_stats *stats, u64 *data)
-{
- struct netdev_private *np = netdev_priv(dev);
- int i = 0;
-
- get_stats(dev);
- data[i++] = np->xstats.tx_multiple_collisions;
- data[i++] = np->xstats.tx_single_collisions;
- data[i++] = np->xstats.tx_late_collisions;
- data[i++] = np->xstats.tx_deferred;
- data[i++] = np->xstats.tx_deferred_excessive;
- data[i++] = np->xstats.tx_aborted;
- data[i++] = np->xstats.tx_bcasts;
- data[i++] = np->xstats.rx_bcasts;
- data[i++] = np->xstats.tx_mcasts;
- data[i++] = np->xstats.rx_mcasts;
-}
-
-#ifdef CONFIG_PM
-
-static void sundance_get_wol(struct net_device *dev,
- struct ethtool_wolinfo *wol)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- u8 wol_bits;
-
- wol->wolopts = 0;
-
- wol->supported = (WAKE_PHY | WAKE_MAGIC);
- if (!np->wol_enabled)
- return;
-
- wol_bits = ioread8(ioaddr + WakeEvent);
- if (wol_bits & MagicPktEnable)
- wol->wolopts |= WAKE_MAGIC;
- if (wol_bits & LinkEventEnable)
- wol->wolopts |= WAKE_PHY;
-}
-
-static int sundance_set_wol(struct net_device *dev,
- struct ethtool_wolinfo *wol)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- u8 wol_bits;
-
- if (!device_can_wakeup(&np->pci_dev->dev))
- return -EOPNOTSUPP;
-
- np->wol_enabled = !!(wol->wolopts);
- wol_bits = ioread8(ioaddr + WakeEvent);
- wol_bits &= ~(WakePktEnable | MagicPktEnable |
- LinkEventEnable | WolEnable);
-
- if (np->wol_enabled) {
- if (wol->wolopts & WAKE_MAGIC)
- wol_bits |= (MagicPktEnable | WolEnable);
- if (wol->wolopts & WAKE_PHY)
- wol_bits |= (LinkEventEnable | WolEnable);
- }
- iowrite8(wol_bits, ioaddr + WakeEvent);
-
- device_set_wakeup_enable(&np->pci_dev->dev, np->wol_enabled);
-
- return 0;
-}
-#else
-#define sundance_get_wol NULL
-#define sundance_set_wol NULL
-#endif /* CONFIG_PM */
-
-static const struct ethtool_ops ethtool_ops = {
- .begin = check_if_running,
- .get_drvinfo = get_drvinfo,
- .nway_reset = nway_reset,
- .get_link = get_link,
- .get_wol = sundance_get_wol,
- .set_wol = sundance_set_wol,
- .get_msglevel = get_msglevel,
- .set_msglevel = set_msglevel,
- .get_strings = get_strings,
- .get_sset_count = get_sset_count,
- .get_ethtool_stats = get_ethtool_stats,
- .get_link_ksettings = get_link_ksettings,
- .set_link_ksettings = set_link_ksettings,
-};
-
-static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
-{
- struct netdev_private *np = netdev_priv(dev);
- int rc;
-
- if (!netif_running(dev))
- return -EINVAL;
-
- spin_lock_irq(&np->lock);
- rc = generic_mii_ioctl(&np->mii_if, if_mii(rq), cmd, NULL);
- spin_unlock_irq(&np->lock);
-
- return rc;
-}
-
-static int netdev_close(struct net_device *dev)
-{
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
- struct sk_buff *skb;
- int i;
-
- /* Wait and kill tasklet */
- tasklet_kill(&np->rx_tasklet);
- tasklet_kill(&np->tx_tasklet);
- np->cur_tx = 0;
- np->dirty_tx = 0;
- np->cur_task = 0;
- np->last_tx = NULL;
-
- netif_stop_queue(dev);
-
- if (netif_msg_ifdown(np)) {
- printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %2.2x "
- "Rx %4.4x Int %2.2x.\n",
- dev->name, ioread8(ioaddr + TxStatus),
- ioread32(ioaddr + RxStatus), ioread16(ioaddr + IntrStatus));
- printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n",
- dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx);
- }
-
- /* Disable interrupts by clearing the interrupt mask. */
- iowrite16(0x0000, ioaddr + IntrEnable);
-
- /* Disable Rx and Tx DMA for safely release resource */
- iowrite32(0x500, ioaddr + DMACtrl);
-
- /* Stop the chip's Tx and Rx processes. */
- iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1);
-
- for (i = 2000; i > 0; i--) {
- if ((ioread32(ioaddr + DMACtrl) & 0xc000) == 0)
- break;
- mdelay(1);
- }
-
- iowrite16(GlobalReset | DMAReset | FIFOReset | NetworkReset,
- ioaddr + ASIC_HI_WORD(ASICCtrl));
-
- for (i = 2000; i > 0; i--) {
- if ((ioread16(ioaddr + ASIC_HI_WORD(ASICCtrl)) & ResetBusy) == 0)
- break;
- mdelay(1);
- }
-
-#ifdef __i386__
- if (netif_msg_hw(np)) {
- printk(KERN_DEBUG " Tx ring at %8.8x:\n",
- (int)(np->tx_ring_dma));
- for (i = 0; i < TX_RING_SIZE; i++)
- printk(KERN_DEBUG " #%d desc. %4.4x %8.8x %8.8x.\n",
- i, np->tx_ring[i].status, np->tx_ring[i].frag.addr,
- np->tx_ring[i].frag.length);
- printk(KERN_DEBUG " Rx ring %8.8x:\n",
- (int)(np->rx_ring_dma));
- for (i = 0; i < /*RX_RING_SIZE*/4 ; i++) {
- printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n",
- i, np->rx_ring[i].status, np->rx_ring[i].frag.addr,
- np->rx_ring[i].frag.length);
- }
- }
-#endif /* __i386__ debugging only */
-
- free_irq(np->pci_dev->irq, dev);
-
- del_timer_sync(&np->timer);
-
- /* Free all the skbuffs in the Rx queue. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- np->rx_ring[i].status = 0;
- skb = np->rx_skbuff[i];
- if (skb) {
- dma_unmap_single(&np->pci_dev->dev,
- le32_to_cpu(np->rx_ring[i].frag.addr),
- np->rx_buf_sz, DMA_FROM_DEVICE);
- dev_kfree_skb(skb);
- np->rx_skbuff[i] = NULL;
- }
- np->rx_ring[i].frag.addr = cpu_to_le32(0xBADF00D0); /* poison */
- }
- for (i = 0; i < TX_RING_SIZE; i++) {
- np->tx_ring[i].next_desc = 0;
- skb = np->tx_skbuff[i];
- if (skb) {
- dma_unmap_single(&np->pci_dev->dev,
- le32_to_cpu(np->tx_ring[i].frag.addr),
- skb->len, DMA_TO_DEVICE);
- dev_kfree_skb(skb);
- np->tx_skbuff[i] = NULL;
- }
- }
-
- return 0;
-}
-
-static void sundance_remove1(struct pci_dev *pdev)
-{
- struct net_device *dev = pci_get_drvdata(pdev);
-
- if (dev) {
- struct netdev_private *np = netdev_priv(dev);
- unregister_netdev(dev);
- dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE,
- np->rx_ring, np->rx_ring_dma);
- dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE,
- np->tx_ring, np->tx_ring_dma);
- pci_iounmap(pdev, np->base);
- pci_release_regions(pdev);
- free_netdev(dev);
- }
-}
-
-static int __maybe_unused sundance_suspend(struct device *dev_d)
-{
- struct net_device *dev = dev_get_drvdata(dev_d);
- struct netdev_private *np = netdev_priv(dev);
- void __iomem *ioaddr = np->base;
-
- if (!netif_running(dev))
- return 0;
-
- netdev_close(dev);
- netif_device_detach(dev);
-
- if (np->wol_enabled) {
- iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode);
- iowrite16(RxEnable, ioaddr + MACCtrl1);
- }
-
- device_set_wakeup_enable(dev_d, np->wol_enabled);
-
- return 0;
-}
-
-static int __maybe_unused sundance_resume(struct device *dev_d)
-{
- struct net_device *dev = dev_get_drvdata(dev_d);
- int err = 0;
-
- if (!netif_running(dev))
- return 0;
-
- err = netdev_open(dev);
- if (err) {
- printk(KERN_ERR "%s: Can't resume interface!\n",
- dev->name);
- goto out;
- }
-
- netif_device_attach(dev);
-
-out:
- return err;
-}
-
-static SIMPLE_DEV_PM_OPS(sundance_pm_ops, sundance_suspend, sundance_resume);
-
-static struct pci_driver sundance_driver = {
- .name = DRV_NAME,
- .id_table = sundance_pci_tbl,
- .probe = sundance_probe1,
- .remove = sundance_remove1,
- .driver.pm = &sundance_pm_ops,
-};
-
-module_pci_driver(sundance_driver);
--
2.46.2
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