/* starfire.c: Linux device driver for the Adaptec Starfire network adapter. */
/*
Written 1998 - 2000 by Donald Becker .
Current maintainer is Ion Badulescu < ionut ta badula tod org > . Please
send all bug reports to me , and not to Donald Becker , as this code
has been heavily modified from Donald ' s original version .
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 information below comes from Donald Becker ' s original driver :
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/starfire.html
[ link no longer provides useful info - jgarzik ]
*/
#define DRV_NAME "starfire"
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/crc32.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/if_vlan.h>
#include <linux/mm.h>
#include <linux/firmware.h>
#include <asm /processor.h> /* Processor type for cache alignment. */
#include <linux/uaccess.h>
#include <asm /io.h>
/*
* The current frame processor firmware fails to checksum a fragment
* of length 1 . If and when this is fixed , the # define below can be removed .
*/
#define HAS_BROKEN_FIRMWARE
/*
* If using the broken firmware , data must be padded to the next 32 - bit boundary .
*/
#ifdef HAS_BROKEN_FIRMWARE
#define PADDING_MASK 3
#endif
/*
* Define this if using the driver with the zero - copy patch
*/
#define ZEROCOPY
#if IS_ENABLED(CONFIG_VLAN_8021Q)
#define VLAN_SUPPORT
#endif
/* The user-configurable values.
These may be modified when a driver module is loaded.*/
/* Used for tuning interrupt latency vs. overhead. */
static int intr_latency;
static int small_frames;
static int debug = 1 ; /* 1 normal messages, 0 quiet .. 7 verbose. */
static int max_interrupt_work = 20 ;
static int mtu;
/* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
The Starfire has a 512 element hash table based on the Ethernet CRC. */
static const int multicast_filter_limit = 512 ;
/* Whether to do TCP/UDP checksums in hardware */
static int enable_hw_cksum = 1 ;
#define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
/*
* Set the copy breakpoint for the copy - only - tiny - frames scheme .
* Setting to > 1518 effectively disables this feature .
*
* NOTE :
* The ia64 doesn ' t allow for unaligned loads even of integers being
* misaligned on a 2 byte boundary . Thus always force copying of
* packets as the starfire doesn ' t allow for misaligned DMAs ; - (
* 23 / 10 / 2000 - Jes
*
* The Alpha and the Sparc don ' t like unaligned loads , either . On Sparc64 ,
* at least , having unaligned frames leads to a rather serious performance
* penalty . - Ion
*/
#if defined (__ia64__) || defined (__alpha__) || defined (__sparc__)
static int rx_copybreak = PKT_BUF_SZ;
#else
static int rx_copybreak /* = 0 */;
#endif
/* PCI DMA burst size -- on sparc64 we want to force it to 64 bytes, on the others the default of 128 is fine. */
#ifdef __sparc__
#define DMA_BURST_SIZE 64
#else
#define DMA_BURST_SIZE 128
#endif
/* Operational parameters that are set at compile time. */
/* The "native" ring sizes are either 256 or 2048.
However in some modes a descriptor may be marked to wrap the ring earlier .
*/
#define RX_RING_SIZE 256
#define TX_RING_SIZE 32
/* The completion queues are fixed at 1024 entries i.e. 4K or 8KB. */
#define DONE_Q_SIZE 1024
/* All queues must be aligned on a 256-byte boundary */
#define QUEUE_ALIGN 256
#if RX_RING_SIZE > 256
#define RX_Q_ENTRIES Rx2048QEntries
#else
#define RX_Q_ENTRIES Rx256QEntries
#endif
/* Operational parameters that usually are not changed. */
/* Time in jiffies before concluding the transmitter is hung. */
#define TX_TIMEOUT (2 * HZ)
#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
/* 64-bit dma_addr_t */
#define ADDR_64BITS /* This chip uses 64 bit addresses. */
#define netdrv_addr_t __le64
#define cpu_to_dma(x) cpu_to_le64(x)
#define dma_to_cpu(x) le64_to_cpu(x)
#define RX_DESC_Q_ADDR_SIZE RxDescQAddr64bit
#define TX_DESC_Q_ADDR_SIZE TxDescQAddr64bit
#define RX_COMPL_Q_ADDR_SIZE RxComplQAddr64bit
#define TX_COMPL_Q_ADDR_SIZE TxComplQAddr64bit
#define RX_DESC_ADDR_SIZE RxDescAddr64bit
#else /* 32-bit dma_addr_t */
#define netdrv_addr_t __le32
#define cpu_to_dma(x) cpu_to_le32(x)
#define dma_to_cpu(x) le32_to_cpu(x)
#define RX_DESC_Q_ADDR_SIZE RxDescQAddr32bit
#define TX_DESC_Q_ADDR_SIZE TxDescQAddr32bit
#define RX_COMPL_Q_ADDR_SIZE RxComplQAddr32bit
#define TX_COMPL_Q_ADDR_SIZE TxComplQAddr32bit
#define RX_DESC_ADDR_SIZE RxDescAddr32bit
#endif
#define skb_first_frag_len(skb) skb_headlen(skb)
#define skb_num_frags(skb) (skb_shinfo(skb)->nr_frags + 1 )
/* Firmware names */
#define FIRMWARE_RX "adaptec/starfire_rx.bin"
#define FIRMWARE_TX "adaptec/starfire_tx.bin"
MODULE_AUTHOR("Donald Becker <becker@scyld.com>" );
MODULE_DESCRIPTION("Adaptec Starfire Ethernet driver" );
MODULE_LICENSE("GPL" );
MODULE_FIRMWARE(FIRMWARE_RX);
MODULE_FIRMWARE(FIRMWARE_TX);
module_param(max_interrupt_work, int , 0 );
module_param(mtu, int , 0 );
module_param(debug, int , 0 );
module_param(rx_copybreak, int , 0 );
module_param(intr_latency, int , 0 );
module_param(small_frames, int , 0 );
module_param(enable_hw_cksum, int , 0 );
MODULE_PARM_DESC(max_interrupt_work, "Maximum events handled per interrupt" );
MODULE_PARM_DESC(mtu, "MTU (all boards)" );
MODULE_PARM_DESC(debug, "Debug level (0-6)" );
MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames" );
MODULE_PARM_DESC(intr_latency, "Maximum interrupt latency, in microseconds" );
MODULE_PARM_DESC(small_frames, "Maximum size of receive frames that bypass interrupt latency (0,64,128,256,512)" );
MODULE_PARM_DESC(enable_hw_cksum, "Enable/disable hardware cksum support (0/1)" );
/*
Theory of Operation
I . Board Compatibility
This driver is for the Adaptec 6915 " Starfire " 64 bit PCI Ethernet adapter .
II . Board - specific settings
III . Driver operation
IIIa . Ring buffers
The Starfire hardware uses multiple fixed - size descriptor queues / rings . The
ring sizes are set fixed by the hardware , but may optionally be wrapped
earlier by the END bit in the descriptor .
This driver uses that hardware queue size for the Rx ring , where a large
number of entries has no ill effect beyond increases the potential backlog .
The Tx ring is wrapped with the END bit , since a large hardware Tx queue
disables the queue layer priority ordering and we have no mechanism to
utilize the hardware two - level priority queue . When modifying the
RX / TX_RING_SIZE pay close attention to page sizes and the ring - empty warning
levels .
IIIb / c . Transmit / Receive Structure
See the Adaptec manual for the many possible structures , and options for
each structure . There are far too many to document all of them here .
For transmit this driver uses type 0 / 1 transmit descriptors ( depending
on the 32 / 64 bitness of the architecture ) , and relies on automatic
minimum - length padding . It does not use the completion queue
consumer index , but instead checks for non - zero status entries .
For receive this driver uses type 2 / 3 receive descriptors . The driver
allocates full frame size skbuffs for the Rx ring buffers , so all frames
should fit in a single descriptor . The driver does not use the completion
queue consumer index , but instead checks for non - zero status entries .
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 receive .
A notable aspect of operation is that unaligned buffers are not permitted by
the Starfire hardware . Thus the IP header at offset 14 in an ethernet frame
isn ' t longword aligned , which may cause problems on some machine
e . g . Alphas and IA64 . For these architectures , the driver is forced to copy
the frame into a new skbuff unconditionally . Copied frames are put into the
skbuff at an offset of " + 2 " , thus 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 the netif_queue
status . If the number of free Tx slots in the ring falls below a certain number
( currently hardcoded to 4 ) , it signals the upper layer to stop the queue .
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 netif_queue is stopped and the
number of free Tx slow is above the threshold , it signals the upper layer to
restart the queue .
IV . Notes
IVb . References
The Adaptec Starfire manuals , available only from Adaptec .
http : //www.scyld.com/expert/100mbps.html
http : //www.scyld.com/expert/NWay.html
IVc . Errata
- StopOnPerr is broken , don ' t enable
- Hardware ethernet padding exposes random data , perform software padding
instead ( unverified - - works correctly for all the hardware I have )
*/
enum chip_capability_flags {CanHaveMII=1 , };
enum chipset {
CH_6915 = 0 ,
};
static const struct pci_device_id starfire_pci_tbl[] = {
{ PCI_VDEVICE(ADAPTEC, 0 x6915), CH_6915 },
{ 0 , }
};
MODULE_DEVICE_TABLE(pci, starfire_pci_tbl);
/* A chip capabilities table, matching the CH_xxx entries in xxx_pci_tbl[] above. */
static const struct chip_info {
const char *name;
int drv_flags;
} netdrv_tbl[] = {
{ "Adaptec Starfire 6915" , CanHaveMII },
};
/* 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 register_offsets {
PCIDeviceConfig=0 x50040, GenCtrl=0 x50070, IntrTimerCtrl=0 x50074,
IntrClear=0 x50080, IntrStatus=0 x50084, IntrEnable=0 x50088,
MIICtrl=0 x52000, TxStationAddr=0 x50120, EEPROMCtrl=0 x51000,
GPIOCtrl=0 x5008C, TxDescCtrl=0 x50090,
TxRingPtr=0 x50098, HiPriTxRingPtr=0 x50094, /* Low and High priority. */
TxRingHiAddr=0 x5009C, /* 64 bit address extension. */
TxProducerIdx=0 x500A0, TxConsumerIdx=0 x500A4,
TxThreshold=0 x500B0,
CompletionHiAddr=0 x500B4, TxCompletionAddr=0 x500B8,
RxCompletionAddr=0 x500BC, RxCompletionQ2Addr=0 x500C0,
CompletionQConsumerIdx=0 x500C4, RxDMACtrl=0 x500D0,
RxDescQCtrl=0 x500D4, RxDescQHiAddr=0 x500DC, RxDescQAddr=0 x500E0,
RxDescQIdx=0 x500E8, RxDMAStatus=0 x500F0, RxFilterMode=0 x500F4,
TxMode=0 x55000, VlanType=0 x55064,
PerfFilterTable=0 x56000, HashTable=0 x56100,
TxGfpMem=0 x58000, RxGfpMem=0 x5a000,
};
/*
* Bits in the interrupt status / mask registers .
* Warning : setting Intr [ Ab ] NormalSummary in the IntrEnable register
* enables all the interrupt sources that are or ' ed into those status bits .
*/
enum intr_status_bits {
IntrLinkChange=0 xf0000000, IntrStatsMax=0 x08000000,
IntrAbnormalSummary=0 x02000000, IntrGeneralTimer=0 x01000000,
IntrSoftware=0 x800000, IntrRxComplQ1Low=0 x400000,
IntrTxComplQLow=0 x200000, IntrPCI=0 x100000,
IntrDMAErr=0 x080000, IntrTxDataLow=0 x040000,
IntrRxComplQ2Low=0 x020000, IntrRxDescQ1Low=0 x010000,
IntrNormalSummary=0 x8000, IntrTxDone=0 x4000,
IntrTxDMADone=0 x2000, IntrTxEmpty=0 x1000,
IntrEarlyRxQ2=0 x0800, IntrEarlyRxQ1=0 x0400,
IntrRxQ2Done=0 x0200, IntrRxQ1Done=0 x0100,
IntrRxGFPDead=0 x80, IntrRxDescQ2Low=0 x40,
IntrNoTxCsum=0 x20, IntrTxBadID=0 x10,
IntrHiPriTxBadID=0 x08, IntrRxGfp=0 x04,
IntrTxGfp=0 x02, IntrPCIPad=0 x01,
/* not quite bits */
IntrRxDone=IntrRxQ2Done | IntrRxQ1Done,
IntrRxEmpty=IntrRxDescQ1Low | IntrRxDescQ2Low,
IntrNormalMask=0 xff00, IntrAbnormalMask=0 x3ff00fe,
};
/* Bits in the RxFilterMode register. */
enum rx_mode_bits {
AcceptBroadcast=0 x04, AcceptAllMulticast=0 x02, AcceptAll=0 x01,
AcceptMulticast=0 x10, PerfectFilter=0 x40, HashFilter=0 x30,
PerfectFilterVlan=0 x80, MinVLANPrio=0 xE000, VlanMode=0 x0200,
WakeupOnGFP=0 x0800,
};
/* Bits in the TxMode register */
enum tx_mode_bits {
MiiSoftReset=0 x8000, MIILoopback=0 x4000,
TxFlowEnable=0 x0800, RxFlowEnable=0 x0400,
PadEnable=0 x04, FullDuplex=0 x02, HugeFrame=0 x01,
};
/* Bits in the TxDescCtrl register. */
enum tx_ctrl_bits {
TxDescSpaceUnlim=0 x00, TxDescSpace32=0 x10, TxDescSpace64=0 x20,
TxDescSpace128=0 x30, TxDescSpace256=0 x40,
TxDescType0=0 x00, TxDescType1=0 x01, TxDescType2=0 x02,
TxDescType3=0 x03, TxDescType4=0 x04,
TxNoDMACompletion=0 x08,
TxDescQAddr64bit=0 x80, TxDescQAddr32bit=0 ,
TxHiPriFIFOThreshShift=24 , TxPadLenShift=16 ,
TxDMABurstSizeShift=8 ,
};
/* Bits in the RxDescQCtrl register. */
enum rx_ctrl_bits {
RxBufferLenShift=16 , RxMinDescrThreshShift=0 ,
RxPrefetchMode=0 x8000, RxVariableQ=0 x2000,
Rx2048QEntries=0 x4000, Rx256QEntries=0 ,
RxDescAddr64bit=0 x1000, RxDescAddr32bit=0 ,
RxDescQAddr64bit=0 x0100, RxDescQAddr32bit=0 ,
RxDescSpace4=0 x000, RxDescSpace8=0 x100,
RxDescSpace16=0 x200, RxDescSpace32=0 x300,
RxDescSpace64=0 x400, RxDescSpace128=0 x500,
RxConsumerWrEn=0 x80,
};
/* Bits in the RxDMACtrl register. */
enum rx_dmactrl_bits {
RxReportBadFrames=0 x80000000, RxDMAShortFrames=0 x40000000,
RxDMABadFrames=0 x20000000, RxDMACrcErrorFrames=0 x10000000,
RxDMAControlFrame=0 x08000000, RxDMAPauseFrame=0 x04000000,
RxChecksumIgnore=0 , RxChecksumRejectTCPUDP=0 x02000000,
RxChecksumRejectTCPOnly=0 x01000000,
RxCompletionQ2Enable=0 x800000,
RxDMAQ2Disable=0 , RxDMAQ2FPOnly=0 x100000,
RxDMAQ2SmallPkt=0 x200000, RxDMAQ2HighPrio=0 x300000,
RxDMAQ2NonIP=0 x400000,
RxUseBackupQueue=0 x080000, RxDMACRC=0 x040000,
RxEarlyIntThreshShift=12 , RxHighPrioThreshShift=8 ,
RxBurstSizeShift=0 ,
};
/* Bits in the RxCompletionAddr register */
enum rx_compl_bits {
RxComplQAddr64bit=0 x80, RxComplQAddr32bit=0 ,
RxComplProducerWrEn=0 x40,
RxComplType0=0 x00, RxComplType1=0 x10,
RxComplType2=0 x20, RxComplType3=0 x30,
RxComplThreshShift=0 ,
};
/* Bits in the TxCompletionAddr register */
enum tx_compl_bits {
TxComplQAddr64bit=0 x80, TxComplQAddr32bit=0 ,
TxComplProducerWrEn=0 x40,
TxComplIntrStatus=0 x20,
CommonQueueMode=0 x10,
TxComplThreshShift=0 ,
};
/* Bits in the GenCtrl register */
enum gen_ctrl_bits {
RxEnable=0 x05, TxEnable=0 x0a,
RxGFPEnable=0 x10, TxGFPEnable=0 x20,
};
/* Bits in the IntrTimerCtrl register */
enum intr_ctrl_bits {
Timer10X=0 x800, EnableIntrMasking=0 x60, SmallFrameBypass=0 x100,
SmallFrame64=0 , SmallFrame128=0 x200, SmallFrame256=0 x400, SmallFrame512=0 x600,
IntrLatencyMask=0 x1f,
};
/* The Rx and Tx buffer descriptors. */
struct starfire_rx_desc {
netdrv_addr_t rxaddr;
};
enum rx_desc_bits {
RxDescValid=1 , RxDescEndRing=2 ,
};
/* Completion queue entry. */
struct csum_rx_done_desc {
__le32 status; /* Low 16 bits is length. */
__le16 csum; /* Partial checksum */
__le16 status2;
};
struct full_rx_done_desc {
__le32 status; /* Low 16 bits is length. */
__le16 status3;
__le16 status2;
__le16 vlanid;
__le16 csum; /* partial checksum */
__le32 timestamp;
};
/* XXX: this is ugly and I'm not sure it's worth the trouble -Ion */
#ifdef VLAN_SUPPORT
typedef struct full_rx_done_desc rx_done_desc;
#define RxComplType RxComplType3
#else /* not VLAN_SUPPORT */
typedef struct csum_rx_done_desc rx_done_desc;
#define RxComplType RxComplType2
#endif /* not VLAN_SUPPORT */
enum rx_done_bits {
RxOK=0 x20000000, RxFIFOErr=0 x10000000, RxBufQ2=0 x08000000,
};
/* Type 1 Tx descriptor. */
struct starfire_tx_desc_1 {
__le32 status; /* Upper bits are status, lower 16 length. */
__le32 addr;
};
/* Type 2 Tx descriptor. */
struct starfire_tx_desc_2 {
__le32 status; /* Upper bits are status, lower 16 length. */
__le32 reserved;
__le64 addr;
};
#ifdef ADDR_64BITS
typedef struct starfire_tx_desc_2 starfire_tx_desc;
#define TX_DESC_TYPE TxDescType2
#else /* not ADDR_64BITS */
typedef struct starfire_tx_desc_1 starfire_tx_desc;
#define TX_DESC_TYPE TxDescType1
#endif /* not ADDR_64BITS */
#define TX_DESC_SPACING TxDescSpaceUnlim
enum tx_desc_bits {
TxDescID=0 xB0000000,
TxCRCEn=0 x01000000, TxDescIntr=0 x08000000,
TxRingWrap=0 x04000000, TxCalTCP=0 x02000000,
};
struct tx_done_desc {
__le32 status; /* timestamp, index. */
#if 0
__le32 intrstatus; /* interrupt status */
#endif
};
struct rx_ring_info {
struct sk_buff *skb;
dma_addr_t mapping;
};
struct tx_ring_info {
struct sk_buff *skb;
dma_addr_t mapping;
unsigned int used_slots;
};
#define PHY_CNT 2
struct netdev_private {
/* Descriptor rings first for alignment. */
struct starfire_rx_desc *rx_ring;
starfire_tx_desc *tx_ring;
dma_addr_t rx_ring_dma;
dma_addr_t tx_ring_dma;
/* The addresses of rx/tx-in-place skbuffs. */
struct rx_ring_info rx_info[RX_RING_SIZE];
struct tx_ring_info tx_info[TX_RING_SIZE];
/* Pointers to completion queues (full pages). */
rx_done_desc *rx_done_q;
dma_addr_t rx_done_q_dma;
unsigned int rx_done;
struct tx_done_desc *tx_done_q;
dma_addr_t tx_done_q_dma;
unsigned int tx_done;
struct napi_struct napi;
struct net_device *dev;
struct pci_dev *pci_dev;
#ifdef VLAN_SUPPORT
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
#endif
void *queue_mem;
dma_addr_t queue_mem_dma;
size_t queue_mem_size;
/* Frequently used values: keep some adjacent for cache effect. */
spinlock_t lock;
unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */
unsigned int cur_tx, dirty_tx, reap_tx;
unsigned int rx_buf_sz; /* Based on MTU+slack. */
/* These values keep track of the transceiver/media in use. */
int speed100; /* Set if speed == 100MBit. */
u32 tx_mode;
u32 intr_timer_ctrl;
u8 tx_threshold;
/* MII transceiver section. */
struct mii_if_info mii_if; /* MII lib hooks/info */
int phy_cnt; /* MII device addresses. */
unsigned char phys[PHY_CNT]; /* MII device addresses. */
void __iomem *base;
};
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 netdev_open(struct net_device *dev);
static void check_duplex(struct net_device *dev);
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 irqreturn_t intr_handler(int irq, void *dev_instance);
static void netdev_error(struct net_device *dev, int intr_status);
static int __netdev_rx(struct net_device *dev, int *quota);
static int netdev_poll(struct napi_struct *napi, int budget);
static void refill_rx_ring(struct net_device *dev);
static void netdev_error(struct net_device *dev, int intr_status);
static void set_rx_mode(struct net_device *dev);
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 void netdev_media_change(struct net_device *dev);
static const struct ethtool_ops ethtool_ops;
#ifdef VLAN_SUPPORT
static int netdev_vlan_rx_add_vid(struct net_device *dev,
__be16 proto, u16 vid)
{
struct netdev_private *np = netdev_priv(dev);
spin_lock(&np->lock);
if (debug > 1 )
printk("%s: Adding vlanid %d to vlan filter\n" , dev->name, vid);
set_bit(vid, np->active_vlans);
set_rx_mode(dev);
spin_unlock(&np->lock);
return 0 ;
}
static int netdev_vlan_rx_kill_vid(struct net_device *dev,
__be16 proto, u16 vid)
{
struct netdev_private *np = netdev_priv(dev);
spin_lock(&np->lock);
if (debug > 1 )
printk("%s: removing vlanid %d from vlan filter\n" , dev->name, vid);
clear_bit(vid, np->active_vlans);
set_rx_mode(dev);
spin_unlock(&np->lock);
return 0 ;
}
#endif /* VLAN_SUPPORT */
static const struct net_device_ops netdev_ops = {
.ndo_open = netdev_open,
.ndo_stop = netdev_close,
.ndo_start_xmit = start_tx,
.ndo_tx_timeout = tx_timeout,
.ndo_get_stats = get_stats,
.ndo_set_rx_mode = set_rx_mode,
.ndo_eth_ioctl = netdev_ioctl,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
#ifdef VLAN_SUPPORT
.ndo_vlan_rx_add_vid = netdev_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = netdev_vlan_rx_kill_vid,
#endif
};
static int starfire_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct device *d = &pdev->dev;
struct netdev_private *np;
int i, irq, chip_idx = ent->driver_data;
struct net_device *dev;
u8 addr[ETH_ALEN];
long ioaddr;
void __iomem *base;
int drv_flags, io_size;
int boguscnt;
if (pci_enable_device (pdev))
return -EIO;
ioaddr = pci_resource_start(pdev, 0 );
io_size = pci_resource_len(pdev, 0 );
if (!ioaddr || ((pci_resource_flags(pdev, 0 ) & IORESOURCE_MEM) == 0 )) {
dev_err(d, "no PCI MEM resources, aborting\n" );
return -ENODEV;
}
dev = alloc_etherdev(sizeof (*np));
if (!dev)
return -ENOMEM;
SET_NETDEV_DEV(dev, &pdev->dev);
irq = pdev->irq;
if (pci_request_regions (pdev, DRV_NAME)) {
dev_err(d, "cannot reserve PCI resources, aborting\n" );
goto err_out_free_netdev;
}
base = ioremap(ioaddr, io_size);
if (!base) {
dev_err(d, "cannot remap %#x @ %#lx, aborting\n" ,
io_size, ioaddr);
goto err_out_free_res;
}
pci_set_master(pdev);
/* enable MWI -- it vastly improves Rx performance on sparc64 */
pci_try_set_mwi(pdev);
#ifdef ZEROCOPY
/* Starfire can do TCP/UDP checksumming */
if (enable_hw_cksum)
dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
#endif /* ZEROCOPY */
#ifdef VLAN_SUPPORT
dev->features |= NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
#endif /* VLAN_RX_KILL_VID */
#ifdef ADDR_64BITS
dev->features |= NETIF_F_HIGHDMA;
#endif /* ADDR_64BITS */
/* Serial EEPROM reads are hidden by the hardware. */
for (i = 0 ; i < 6 ; i++)
addr[i] = readb(base + EEPROMCtrl + 20 - i);
eth_hw_addr_set(dev, addr);
#if ! defined (final_version) /* Dump the EEPROM contents during development. */
if (debug > 4 )
for (i = 0 ; i < 0 x20; i++)
printk("%2.2x%s" ,
(unsigned int )readb(base + EEPROMCtrl + i),
i % 16 != 15 ? " " : "\n" );
#endif
/* Issue soft reset */
writel(MiiSoftReset, base + TxMode);
udelay(1000 );
writel(0 , base + TxMode);
/* Reset the chip to erase previous misconfiguration. */
writel(1 , base + PCIDeviceConfig);
boguscnt = 1000 ;
while (--boguscnt > 0 ) {
udelay(10 );
if ((readl(base + PCIDeviceConfig) & 1 ) == 0 )
break ;
}
if (boguscnt == 0 )
printk("%s: chipset reset never completed!\n" , dev->name);
/* wait a little longer */
udelay(1000 );
np = netdev_priv(dev);
np->dev = dev;
np->base = base;
spin_lock_init(&np->lock);
pci_set_drvdata(pdev, dev);
np->pci_dev = pdev;
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 = 0 x1f;
np->mii_if.reg_num_mask = 0 x1f;
drv_flags = netdrv_tbl[chip_idx].drv_flags;
np->speed100 = 1 ;
/* timer resolution is 128 * 0.8us */
np->intr_timer_ctrl = (((intr_latency * 10 ) / 1024 ) & IntrLatencyMask) |
Timer10X | EnableIntrMasking;
if (small_frames > 0 ) {
np->intr_timer_ctrl |= SmallFrameBypass;
switch (small_frames) {
case 1 ... 64 :
np->intr_timer_ctrl |= SmallFrame64;
break ;
case 65 ... 128 :
np->intr_timer_ctrl |= SmallFrame128;
break ;
case 129 ... 256 :
np->intr_timer_ctrl |= SmallFrame256;
break ;
default :
np->intr_timer_ctrl |= SmallFrame512;
if (small_frames > 512 )
printk("Adjusting small_frames down to 512\n" );
break ;
}
}
dev->netdev_ops = &netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
dev->ethtool_ops = ðtool_ops;
netif_napi_add_weight(dev, &np->napi, netdev_poll, max_interrupt_work);
if (mtu)
dev->mtu = mtu;
if (register_netdev(dev))
goto err_out_cleardev;
printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n" ,
dev->name, netdrv_tbl[chip_idx].name, base,
dev->dev_addr, irq);
if (drv_flags & CanHaveMII) {
int phy, phy_idx = 0 ;
int mii_status;
for (phy = 0 ; phy < 32 && phy_idx < PHY_CNT; phy++) {
mdio_write(dev, phy, MII_BMCR, BMCR_RESET);
msleep(100 );
boguscnt = 1000 ;
while (--boguscnt > 0 )
if ((mdio_read(dev, phy, MII_BMCR) & BMCR_RESET) == 0 )
break ;
if (boguscnt == 0 ) {
printk("%s: PHY#%d reset never completed!\n" , dev->name, phy);
continue ;
}
mii_status = mdio_read(dev, phy, MII_BMSR);
if (mii_status != 0 ) {
np->phys[phy_idx++] = phy;
np->mii_if.advertising = mdio_read(dev, phy, MII_ADVERTISE);
printk(KERN_INFO "%s: MII PHY found at address %d, status "
"%#4.4x advertising %#4.4x.\n" ,
dev->name, phy, mii_status, np->mii_if.advertising);
/* there can be only one PHY on-board */
break ;
}
}
np->phy_cnt = phy_idx;
if (np->phy_cnt > 0 )
np->mii_if.phy_id = np->phys[0 ];
else
memset(&np->mii_if, 0 , sizeof (np->mii_if));
}
printk(KERN_INFO "%s: scatter-gather and hardware TCP cksumming %s.\n" ,
dev->name, enable_hw_cksum ? "enabled" : "disabled" );
return 0 ;
err_out_cleardev:
iounmap(base);
err_out_free_res:
pci_release_regions (pdev);
err_out_free_netdev:
free_netdev(dev);
return -ENODEV;
}
/* Read the MII Management Data I/O (MDIO) interfaces. */
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 + (phy_id<<7 ) + (location<<2 );
int result, boguscnt=1000 ;
/* ??? Should we add a busy-wait here? */
do {
result = readl(mdio_addr);
} while ((result & 0 xC0000000) != 0 x80000000 && --boguscnt > 0 );
if (boguscnt == 0 )
return 0 ;
if ((result & 0 xffff) == 0 xffff)
return 0 ;
return result & 0 xffff;
}
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 + (phy_id<<7 ) + (location<<2 );
writel(value, mdio_addr);
/* The busy-wait will occur before a read. */
}
static int netdev_open(struct net_device *dev)
{
const struct firmware *fw_rx, *fw_tx;
const __be32 *fw_rx_data, *fw_tx_data;
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->base;
const int irq = np->pci_dev->irq;
int i, retval;
size_t tx_size, rx_size;
size_t tx_done_q_size, rx_done_q_size, tx_ring_size, rx_ring_size;
/* Do we ever need to reset the chip??? */
retval = request_irq(irq, intr_handler, IRQF_SHARED, dev->name, dev);
if (retval)
return retval;
/* Disable the Rx and Tx, and reset the chip. */
writel(0 , ioaddr + GenCtrl);
writel(1 , ioaddr + PCIDeviceConfig);
if (debug > 1 )
printk(KERN_DEBUG "%s: netdev_open() irq %d.\n" ,
dev->name, irq);
/* Allocate the various queues. */
if (!np->queue_mem) {
tx_done_q_size = ((sizeof (struct tx_done_desc) * DONE_Q_SIZE + QUEUE_ALIGN - 1 ) / QUEUE_ALIGN) * QUEUE_ALIGN;
rx_done_q_size = ((sizeof (rx_done_desc) * DONE_Q_SIZE + QUEUE_ALIGN - 1 ) / QUEUE_ALIGN) * QUEUE_ALIGN;
tx_ring_size = ((sizeof (starfire_tx_desc) * TX_RING_SIZE + QUEUE_ALIGN - 1 ) / QUEUE_ALIGN) * QUEUE_ALIGN;
rx_ring_size = sizeof (struct starfire_rx_desc) * RX_RING_SIZE;
np->queue_mem_size = tx_done_q_size + rx_done_q_size + tx_ring_size + rx_ring_size;
np->queue_mem = dma_alloc_coherent(&np->pci_dev->dev,
np->queue_mem_size,
&np->queue_mem_dma, GFP_ATOMIC);
if (np->queue_mem == NULL) {
free_irq(irq, dev);
return -ENOMEM;
}
np->tx_done_q = np->queue_mem;
np->tx_done_q_dma = np->queue_mem_dma;
np->rx_done_q = (void *) np->tx_done_q + tx_done_q_size;
np->rx_done_q_dma = np->tx_done_q_dma + tx_done_q_size;
np->tx_ring = (void *) np->rx_done_q + rx_done_q_size;
np->tx_ring_dma = np->rx_done_q_dma + rx_done_q_size;
np->rx_ring = (void *) np->tx_ring + tx_ring_size;
np->rx_ring_dma = np->tx_ring_dma + tx_ring_size;
}
/* Start with no carrier, it gets adjusted later */
netif_carrier_off(dev);
init_ring(dev);
/* Set the size of the Rx buffers. */
writel((np->rx_buf_sz << RxBufferLenShift) |
(0 << RxMinDescrThreshShift) |
RxPrefetchMode | RxVariableQ |
RX_Q_ENTRIES |
RX_DESC_Q_ADDR_SIZE | RX_DESC_ADDR_SIZE |
RxDescSpace4,
ioaddr + RxDescQCtrl);
/* Set up the Rx DMA controller. */
writel(RxChecksumIgnore |
(0 << RxEarlyIntThreshShift) |
(6 << RxHighPrioThreshShift) |
((DMA_BURST_SIZE / 32 ) << RxBurstSizeShift),
ioaddr + RxDMACtrl);
/* Set Tx descriptor */
writel((2 << TxHiPriFIFOThreshShift) |
(0 << TxPadLenShift) |
((DMA_BURST_SIZE / 32 ) << TxDMABurstSizeShift) |
TX_DESC_Q_ADDR_SIZE |
TX_DESC_SPACING | TX_DESC_TYPE,
ioaddr + TxDescCtrl);
writel( (np->queue_mem_dma >> 16 ) >> 16 , ioaddr + RxDescQHiAddr);
writel( (np->queue_mem_dma >> 16 ) >> 16 , ioaddr + TxRingHiAddr);
writel( (np->queue_mem_dma >> 16 ) >> 16 , ioaddr + CompletionHiAddr);
writel(np->rx_ring_dma, ioaddr + RxDescQAddr);
writel(np->tx_ring_dma, ioaddr + TxRingPtr);
writel(np->tx_done_q_dma, ioaddr + TxCompletionAddr);
writel(np->rx_done_q_dma |
RxComplType |
(0 << RxComplThreshShift),
ioaddr + RxCompletionAddr);
if (debug > 1 )
printk(KERN_DEBUG "%s: Filling in the station address.\n" , dev->name);
/* Fill both the Tx SA register and the Rx perfect filter. */
for (i = 0 ; i < 6 ; i++)
writeb(dev->dev_addr[i], ioaddr + TxStationAddr + 5 - i);
/* The first entry is special because it bypasses the VLAN filter.
Don't use it. */
writew(0 , ioaddr + PerfFilterTable);
writew(0 , ioaddr + PerfFilterTable + 4 );
writew(0 , ioaddr + PerfFilterTable + 8 );
for (i = 1 ; i < 16 ; i++) {
const __be16 *eaddrs = (const __be16 *)dev->dev_addr;
void __iomem *setup_frm = ioaddr + PerfFilterTable + i * 16 ;
writew(be16_to_cpu(eaddrs[2 ]), setup_frm); setup_frm += 4 ;
writew(be16_to_cpu(eaddrs[1 ]), setup_frm); setup_frm += 4 ;
writew(be16_to_cpu(eaddrs[0 ]), setup_frm); setup_frm += 8 ;
}
/* Initialize other registers. */
/* Configure the PCI bus bursts and FIFO thresholds. */
np->tx_mode = TxFlowEnable|RxFlowEnable|PadEnable; /* modified when link is up. */
writel(MiiSoftReset | np->tx_mode, ioaddr + TxMode);
udelay(1000 );
writel(np->tx_mode, ioaddr + TxMode);
np->tx_threshold = 4 ;
writel(np->tx_threshold, ioaddr + TxThreshold);
writel(np->intr_timer_ctrl, ioaddr + IntrTimerCtrl);
napi_enable(&np->napi);
netif_start_queue(dev);
if (debug > 1 )
printk(KERN_DEBUG "%s: Setting the Rx and Tx modes.\n" , dev->name);
set_rx_mode(dev);
np->mii_if.advertising = mdio_read(dev, np->phys[0 ], MII_ADVERTISE);
check_duplex(dev);
/* Enable GPIO interrupts on link change */
writel(0 x0f00ff00, ioaddr + GPIOCtrl);
/* Set the interrupt mask */
writel(IntrRxDone | IntrRxEmpty | IntrDMAErr |
IntrTxDMADone | IntrStatsMax | IntrLinkChange |
IntrRxGFPDead | IntrNoTxCsum | IntrTxBadID,
ioaddr + IntrEnable);
/* Enable PCI interrupts. */
writel(0 x00800000 | readl(ioaddr + PCIDeviceConfig),
ioaddr + PCIDeviceConfig);
#ifdef VLAN_SUPPORT
/* Set VLAN type to 802.1q */
writel(ETH_P_8021Q, ioaddr + VlanType);
#endif /* VLAN_SUPPORT */
retval = request_firmware(&fw_rx, FIRMWARE_RX, &np->pci_dev->dev);
if (retval) {
printk(KERN_ERR "starfire: Failed to load firmware \" %s\"\n" ,
FIRMWARE_RX);
goto out_init;
}
if (fw_rx->size % 4 ) {
printk(KERN_ERR "starfire: bogus length %zu in \" %s\"\n" ,
fw_rx->size, FIRMWARE_RX);
retval = -EINVAL;
goto out_rx;
}
retval = request_firmware(&fw_tx, FIRMWARE_TX, &np->pci_dev->dev);
if (retval) {
printk(KERN_ERR "starfire: Failed to load firmware \" %s\"\n" ,
FIRMWARE_TX);
goto out_rx;
}
if (fw_tx->size % 4 ) {
printk(KERN_ERR "starfire: bogus length %zu in \" %s\"\n" ,
fw_tx->size, FIRMWARE_TX);
retval = -EINVAL;
goto out_tx;
}
fw_rx_data = (const __be32 *)&fw_rx->data[0 ];
fw_tx_data = (const __be32 *)&fw_tx->data[0 ];
rx_size = fw_rx->size / 4 ;
tx_size = fw_tx->size / 4 ;
/* Load Rx/Tx firmware into the frame processors */
for (i = 0 ; i < rx_size; i++)
writel(be32_to_cpup(&fw_rx_data[i]), ioaddr + RxGfpMem + i * 4 );
for (i = 0 ; i < tx_size; i++)
writel(be32_to_cpup(&fw_tx_data[i]), ioaddr + TxGfpMem + i * 4 );
if (enable_hw_cksum)
/* Enable the Rx and Tx units, and the Rx/Tx frame processors. */
writel(TxEnable|TxGFPEnable|RxEnable|RxGFPEnable, ioaddr + GenCtrl);
else
/* Enable the Rx and Tx units only. */
writel(TxEnable|RxEnable, ioaddr + GenCtrl);
if (debug > 1 )
printk(KERN_DEBUG "%s: Done netdev_open().\n" ,
dev->name);
out_tx:
release_firmware(fw_tx);
out_rx:
release_firmware(fw_rx);
out_init:
if (retval)
netdev_close(dev);
return retval;
}
static void check_duplex(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
u16 reg0;
int silly_count = 1000 ;
mdio_write(dev, np->phys[0 ], MII_ADVERTISE, np->mii_if.advertising);
mdio_write(dev, np->phys[0 ], MII_BMCR, BMCR_RESET);
udelay(500 );
while (--silly_count && mdio_read(dev, np->phys[0 ], MII_BMCR) & BMCR_RESET)
/* do nothing */;
if (!silly_count) {
printk("%s: MII reset failed!\n" , dev->name);
return ;
}
reg0 = mdio_read(dev, np->phys[0 ], MII_BMCR);
if (!np->mii_if.force_media) {
reg0 |= BMCR_ANENABLE | BMCR_ANRESTART;
} else {
reg0 &= ~(BMCR_ANENABLE | BMCR_ANRESTART);
if (np->speed100)
reg0 |= BMCR_SPEED100;
if (np->mii_if.full_duplex)
reg0 |= BMCR_FULLDPLX;
printk(KERN_DEBUG "%s: Link forced to %sMbit %s-duplex\n" ,
dev->name,
np->speed100 ? "100" : "10" ,
np->mii_if.full_duplex ? "full" : "half" );
}
mdio_write(dev, np->phys[0 ], MII_BMCR, reg0);
}
static void tx_timeout(struct net_device *dev, unsigned int txqueue)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->base;
int old_debug;
printk(KERN_WARNING "%s: Transmit timed out, status %#8.8x, "
"resetting...\n" , dev->name, (int ) readl(ioaddr + IntrStatus));
/* Perhaps we should reinitialize the hardware here. */
/*
* Stop and restart the interface .
* Cheat and increase the debug level temporarily .
*/
old_debug = debug;
debug = 2 ;
netdev_close(dev);
netdev_open(dev);
debug = old_debug;
/* Trigger an immediate transmit demand. */
netif_trans_update(dev); /* prevent tx timeout */
dev->stats.tx_errors++;
netif_wake_queue(dev);
}
/* 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 = np->reap_tx = 0 ;
np->dirty_rx = np->dirty_tx = np->rx_done = np->tx_done = 0 ;
np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32 );
/* 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);
np->rx_info[i].skb = skb;
if (skb == NULL)
break ;
np->rx_info[i].mapping = 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_info[i].mapping)) {
dev_kfree_skb(skb);
np->rx_info[i].skb = NULL;
break ;
}
/* Grrr, we cannot offset to correctly align the IP header. */
np->rx_ring[i].rxaddr = cpu_to_dma(np->rx_info[i].mapping | RxDescValid);
}
writew(i - 1 , np->base + RxDescQIdx);
np->dirty_rx = (unsigned int )(i - RX_RING_SIZE);
/* Clear the remainder of the Rx buffer ring. */
for ( ; i < RX_RING_SIZE; i++) {
np->rx_ring[i].rxaddr = 0 ;
np->rx_info[i].skb = NULL;
np->rx_info[i].mapping = 0 ;
}
/* Mark the last entry as wrapping the ring. */
np->rx_ring[RX_RING_SIZE - 1 ].rxaddr |= cpu_to_dma(RxDescEndRing);
/* Clear the completion rings. */
for (i = 0 ; i < DONE_Q_SIZE; i++) {
np->rx_done_q[i].status = 0 ;
np->tx_done_q[i].status = 0 ;
}
for (i = 0 ; i < TX_RING_SIZE; i++)
memset(&np->tx_info[i], 0 , sizeof (np->tx_info[i]));
}
static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
unsigned int entry;
unsigned int prev_tx;
u32 status;
int i, j;
/*
* be cautious here , wrapping the queue has weird semantics
* and we may not have enough slots even when it seems we do .
*/
if ((np->cur_tx - np->dirty_tx) + skb_num_frags(skb) * 2 > TX_RING_SIZE) {
netif_stop_queue(dev);
return NETDEV_TX_BUSY;
}
#if defined (ZEROCOPY) && defined (HAS_BROKEN_FIRMWARE)
if (skb->ip_summed == CHECKSUM_PARTIAL) {
if (skb_padto(skb, (skb->len + PADDING_MASK) & ~PADDING_MASK))
return NETDEV_TX_OK;
}
#endif /* ZEROCOPY && HAS_BROKEN_FIRMWARE */
prev_tx = np->cur_tx;
entry = np->cur_tx % TX_RING_SIZE;
for (i = 0 ; i < skb_num_frags(skb); i++) {
int wrap_ring = 0 ;
status = TxDescID;
if (i == 0 ) {
np->tx_info[entry].skb = skb;
status |= TxCRCEn;
if (entry >= TX_RING_SIZE - skb_num_frags(skb)) {
status |= TxRingWrap;
wrap_ring = 1 ;
}
if (np->reap_tx) {
status |= TxDescIntr;
np->reap_tx = 0 ;
}
if (skb->ip_summed == CHECKSUM_PARTIAL) {
status |= TxCalTCP;
dev->stats.tx_compressed++;
}
status |= skb_first_frag_len(skb) | (skb_num_frags(skb) << 16 );
np->tx_info[entry].mapping =
dma_map_single(&np->pci_dev->dev, skb->data,
skb_first_frag_len(skb),
DMA_TO_DEVICE);
} else {
const skb_frag_t *this_frag = &skb_shinfo(skb)->frags[i - 1 ];
status |= skb_frag_size(this_frag);
np->tx_info[entry].mapping =
dma_map_single(&np->pci_dev->dev,
skb_frag_address(this_frag),
skb_frag_size(this_frag),
DMA_TO_DEVICE);
}
if (dma_mapping_error(&np->pci_dev->dev, np->tx_info[entry].mapping)) {
dev->stats.tx_dropped++;
goto err_out;
}
np->tx_ring[entry].addr = cpu_to_dma(np->tx_info[entry].mapping);
np->tx_ring[entry].status = cpu_to_le32(status);
if (debug > 3 )
printk(KERN_DEBUG "%s: Tx #%d/#%d slot %d status %#8.8x.\n" ,
dev->name, np->cur_tx, np->dirty_tx,
entry, status);
if (wrap_ring) {
np->tx_info[entry].used_slots = TX_RING_SIZE - entry;
np->cur_tx += np->tx_info[entry].used_slots;
entry = 0 ;
} else {
np->tx_info[entry].used_slots = 1 ;
np->cur_tx += np->tx_info[entry].used_slots;
entry++;
}
/* scavenge the tx descriptors twice per TX_RING_SIZE */
if (np->cur_tx % (TX_RING_SIZE / 2 ) == 0 )
np->reap_tx = 1 ;
}
/* Non-x86: explicitly flush descriptor cache lines here. */
/* Ensure all descriptors are written back before the transmit is
initiated. - Jes */
wmb();
/* Update the producer index. */
writel(entry * (sizeof (starfire_tx_desc) / 8 ), np->base + TxProducerIdx);
/* 4 is arbitrary, but should be ok */
if ((np->cur_tx - np->dirty_tx) + 4 > TX_RING_SIZE)
netif_stop_queue(dev);
return NETDEV_TX_OK;
err_out:
entry = prev_tx % TX_RING_SIZE;
np->tx_info[entry].skb = NULL;
if (i > 0 ) {
dma_unmap_single(&np->pci_dev->dev,
np->tx_info[entry].mapping,
skb_first_frag_len(skb), DMA_TO_DEVICE);
np->tx_info[entry].mapping = 0 ;
entry = (entry + np->tx_info[entry].used_slots) % TX_RING_SIZE;
for (j = 1 ; j < i; j++) {
dma_unmap_single(&np->pci_dev->dev,
np->tx_info[entry].mapping,
skb_frag_size(&skb_shinfo(skb)->frags[j - 1 ]),
DMA_TO_DEVICE);
entry++;
}
}
dev_kfree_skb_any(skb);
np->cur_tx = prev_tx;
return NETDEV_TX_OK;
}
/* The interrupt handler does all of the Rx thread work and cleans up
after the Tx thread. */
static irqreturn_t intr_handler(int irq, void *dev_instance)
{
struct net_device *dev = dev_instance;
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->base;
int boguscnt = max_interrupt_work;
int consumer;
int tx_status;
int handled = 0 ;
do {
u32 intr_status = readl(ioaddr + IntrClear);
if (debug > 4 )
printk(KERN_DEBUG "%s: Interrupt status %#8.8x.\n" ,
dev->name, intr_status);
if (intr_status == 0 || intr_status == (u32) -1 )
break ;
handled = 1 ;
if (intr_status & (IntrRxDone | IntrRxEmpty)) {
u32 enable;
if (likely(napi_schedule_prep(&np->napi))) {
__napi_schedule(&np->napi);
enable = readl(ioaddr + IntrEnable);
enable &= ~(IntrRxDone | IntrRxEmpty);
writel(enable, ioaddr + IntrEnable);
/* flush PCI posting buffers */
readl(ioaddr + IntrEnable);
} else {
/* Paranoia check */
enable = readl(ioaddr + IntrEnable);
if (enable & (IntrRxDone | IntrRxEmpty)) {
printk(KERN_INFO
"%s: interrupt while in poll!\n" ,
dev->name);
enable &= ~(IntrRxDone | IntrRxEmpty);
writel(enable, ioaddr + IntrEnable);
}
}
}
/* Scavenge the skbuff list based on the Tx-done queue.
There are redundant checks here that may be cleaned up
after the driver has proven to be reliable. */
consumer = readl(ioaddr + TxConsumerIdx);
if (debug > 3 )
printk(KERN_DEBUG "%s: Tx Consumer index is %d.\n" ,
dev->name, consumer);
while ((tx_status = le32_to_cpu(np->tx_done_q[np->tx_done].status)) != 0 ) {
if (debug > 3 )
printk(KERN_DEBUG "%s: Tx completion #%d entry %d is %#8.8x.\n" ,
dev->name, np->dirty_tx, np->tx_done, tx_status);
if ((tx_status & 0 xe0000000) == 0 xa0000000) {
dev->stats.tx_packets++;
} else if ((tx_status & 0 xe0000000) == 0 x80000000) {
u16 entry = (tx_status & 0 x7fff) / sizeof (starfire_tx_desc);
struct sk_buff *skb = np->tx_info[entry].skb;
np->tx_info[entry].skb = NULL;
dma_unmap_single(&np->pci_dev->dev,
np->tx_info[entry].mapping,
skb_first_frag_len(skb),
DMA_TO_DEVICE);
np->tx_info[entry].mapping = 0 ;
np->dirty_tx += np->tx_info[entry].used_slots;
entry = (entry + np->tx_info[entry].used_slots) % TX_RING_SIZE;
{
int i;
for (i = 0 ; i < skb_shinfo(skb)->nr_frags; i++) {
dma_unmap_single(&np->pci_dev->dev,
np->tx_info[entry].mapping,
skb_frag_size(&skb_shinfo(skb)->frags[i]),
DMA_TO_DEVICE);
np->dirty_tx++;
entry++;
}
}
dev_consume_skb_irq(skb);
}
np->tx_done_q[np->tx_done].status = 0 ;
np->tx_done = (np->tx_done + 1 ) % DONE_Q_SIZE;
}
writew(np->tx_done, ioaddr + CompletionQConsumerIdx + 2 );
if (netif_queue_stopped(dev) &&
(np->cur_tx - np->dirty_tx + 4 < TX_RING_SIZE)) {
/* The ring is no longer full, wake the queue. */
netif_wake_queue(dev);
}
/* Stats overflow */
if (intr_status & IntrStatsMax)
get_stats(dev);
/* Media change interrupt. */
if (intr_status & IntrLinkChange)
netdev_media_change(dev);
/* Abnormal error summary/uncommon events handlers. */
if (intr_status & IntrAbnormalSummary)
netdev_error(dev, intr_status);
if (--boguscnt < 0 ) {
if (debug > 1 )
printk(KERN_WARNING "%s: Too much work at interrupt, "
"status=%#8.8x.\n" ,
dev->name, intr_status);
break ;
}
} while (1 );
if (debug > 4 )
printk(KERN_DEBUG "%s: exiting interrupt, status=%#8.8x.\n" ,
dev->name, (int ) readl(ioaddr + IntrStatus));
return IRQ_RETVAL(handled);
}
/*
* This routine is logically part of the interrupt / poll handler , but separated
* for clarity and better register allocation .
*/
static int __netdev_rx(struct net_device *dev, int *quota)
{
struct netdev_private *np = netdev_priv(dev);
u32 desc_status;
int retcode = 0 ;
/* If EOP is set on the next entry, it's a new packet. Send it up. */
while ((desc_status = le32_to_cpu(np->rx_done_q[np->rx_done].status)) != 0 ) {
struct sk_buff *skb;
u16 pkt_len;
int entry;
rx_done_desc *desc = &np->rx_done_q[np->rx_done];
if (debug > 4 )
printk(KERN_DEBUG " netdev_rx() status of %d was %#8.8x.\n" , np->rx_done, desc_status);
if (!(desc_status & RxOK)) {
/* There was an error. */
if (debug > 2 )
printk(KERN_DEBUG " netdev_rx() Rx error was %#8.8x.\n" , desc_status);
dev->stats.rx_errors++;
if (desc_status & RxFIFOErr)
dev->stats.rx_fifo_errors++;
goto next_rx;
}
if (*quota <= 0 ) { /* out of rx quota */
retcode = 1 ;
goto out;
}
(*quota)--;
pkt_len = desc_status; /* Implicitly Truncate */
entry = (desc_status >> 16 ) & 0 x7ff;
if (debug > 4 )
printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d, quota %d.\n" , pkt_len, *quota);
/* 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,
np->rx_info[entry].mapping,
pkt_len, DMA_FROM_DEVICE);
skb_copy_to_linear_data(skb, np->rx_info[entry].skb->data, pkt_len);
dma_sync_single_for_device(&np->pci_dev->dev,
np->rx_info[entry].mapping,
pkt_len, DMA_FROM_DEVICE);
skb_put(skb, pkt_len);
} else {
dma_unmap_single(&np->pci_dev->dev,
np->rx_info[entry].mapping,
np->rx_buf_sz, DMA_FROM_DEVICE);
skb = np->rx_info[entry].skb;
skb_put(skb, pkt_len);
np->rx_info[entry].skb = NULL;
np->rx_info[entry].mapping = 0 ;
}
#ifndef final_version /* Remove after testing. */
/* You will want this info for the initial debug. */
if (debug > 5 ) {
printk(KERN_DEBUG " Rx data %pM %pM %2.2x%2.2x.\n" ,
skb->data, skb->data + 6 ,
skb->data[12 ], skb->data[13 ]);
}
#endif
skb->protocol = eth_type_trans(skb, dev);
#ifdef VLAN_SUPPORT
if (debug > 4 )
printk(KERN_DEBUG " netdev_rx() status2 of %d was %#4.4x.\n" , np->rx_done, le16_to_cpu(desc->status2));
#endif
if (le16_to_cpu(desc->status2) & 0 x0100) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
dev->stats.rx_compressed++;
}
/*
* This feature doesn ' t seem to be working , at least
* with the two firmware versions I have . If the GFP sees
* an IP fragment , it either ignores it completely , or reports
* " bad checksum " on it .
*
* Maybe I missed something - - corrections are welcome .
* Until then , the printk stays . : - ) - Ion
*/
else if (le16_to_cpu(desc->status2) & 0 x0040) {
skb->ip_summed = CHECKSUM_COMPLETE;
skb->csum = le16_to_cpu(desc->csum);
printk(KERN_DEBUG "%s: checksum_hw, status2 = %#x\n" , dev->name, le16_to_cpu(desc->status2));
}
#ifdef VLAN_SUPPORT
if (le16_to_cpu(desc->status2) & 0 x0200) {
u16 vlid = le16_to_cpu(desc->vlanid);
if (debug > 4 ) {
printk(KERN_DEBUG " netdev_rx() vlanid = %d\n" ,
vlid);
}
__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlid);
}
#endif /* VLAN_SUPPORT */
netif_receive_skb(skb);
dev->stats.rx_packets++;
next_rx:
np->cur_rx++;
desc->status = 0 ;
np->rx_done = (np->rx_done + 1 ) % DONE_Q_SIZE;
}
if (*quota == 0 ) { /* out of rx quota */
retcode = 1 ;
goto out;
}
writew(np->rx_done, np->base + CompletionQConsumerIdx);
out:
refill_rx_ring(dev);
if (debug > 5 )
printk(KERN_DEBUG " exiting netdev_rx(): %d, status of %d was %#8.8x.\n" ,
retcode, np->rx_done, desc_status);
return retcode;
}
static int netdev_poll(struct napi_struct *napi, int budget)
{
struct netdev_private *np = container_of(napi, struct netdev_private, napi);
struct net_device *dev = np->dev;
u32 intr_status;
void __iomem *ioaddr = np->base;
int quota = budget;
do {
writel(IntrRxDone | IntrRxEmpty, ioaddr + IntrClear);
if (__netdev_rx(dev, "a))
goto out;
intr_status = readl(ioaddr + IntrStatus);
} while (intr_status & (IntrRxDone | IntrRxEmpty));
napi_complete(napi);
intr_status = readl(ioaddr + IntrEnable);
intr_status |= IntrRxDone | IntrRxEmpty;
writel(intr_status, ioaddr + IntrEnable);
out:
if (debug > 5 )
printk(KERN_DEBUG " exiting netdev_poll(): %d.\n" ,
budget - quota);
/* Restart Rx engine if stopped. */
return budget - quota;
}
static void refill_rx_ring(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
struct sk_buff *skb;
int entry = -1 ;
/* Refill the Rx ring buffers. */
for (; np->cur_rx - np->dirty_rx > 0 ; np->dirty_rx++) {
entry = np->dirty_rx % RX_RING_SIZE;
if (np->rx_info[entry].skb == NULL) {
skb = netdev_alloc_skb(dev, np->rx_buf_sz);
np->rx_info[entry].skb = skb;
if (skb == NULL)
break ; /* Better luck next round. */
np->rx_info[entry].mapping =
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_info[entry].mapping)) {
dev_kfree_skb(skb);
np->rx_info[entry].skb = NULL;
break ;
}
np->rx_ring[entry].rxaddr =
cpu_to_dma(np->rx_info[entry].mapping | RxDescValid);
}
if (entry == RX_RING_SIZE - 1 )
np->rx_ring[entry].rxaddr |= cpu_to_dma(RxDescEndRing);
}
if (entry >= 0 )
writew(entry, np->base + RxDescQIdx);
}
static void netdev_media_change(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->base;
u16 reg0, reg1, reg4, reg5;
u32 new_tx_mode;
u32 new_intr_timer_ctrl;
/* reset status first */
mdio_read(dev, np->phys[0 ], MII_BMCR);
mdio_read(dev, np->phys[0 ], MII_BMSR);
reg0 = mdio_read(dev, np->phys[0 ], MII_BMCR);
reg1 = mdio_read(dev, np->phys[0 ], MII_BMSR);
if (reg1 & BMSR_LSTATUS) {
/* link is up */
if (reg0 & BMCR_ANENABLE) {
/* autonegotiation is enabled */
reg4 = mdio_read(dev, np->phys[0 ], MII_ADVERTISE);
reg5 = mdio_read(dev, np->phys[0 ], MII_LPA);
if (reg4 & ADVERTISE_100FULL && reg5 & LPA_100FULL) {
np->speed100 = 1 ;
np->mii_if.full_duplex = 1 ;
} else if (reg4 & ADVERTISE_100HALF && reg5 & LPA_100HALF) {
np->speed100 = 1 ;
np->mii_if.full_duplex = 0 ;
} else if (reg4 & ADVERTISE_10FULL && reg5 & LPA_10FULL) {
np->speed100 = 0 ;
np->mii_if.full_duplex = 1 ;
} else {
np->speed100 = 0 ;
np->mii_if.full_duplex = 0 ;
}
} else {
/* autonegotiation is disabled */
if (reg0 & BMCR_SPEED100)
np->speed100 = 1 ;
else
np->speed100 = 0 ;
if (reg0 & BMCR_FULLDPLX)
np->mii_if.full_duplex = 1 ;
else
np->mii_if.full_duplex = 0 ;
}
netif_carrier_on(dev);
printk(KERN_DEBUG "%s: Link is up, running at %sMbit %s-duplex\n" ,
dev->name,
np->speed100 ? "100" : "10" ,
np->mii_if.full_duplex ? "full" : "half" );
new_tx_mode = np->tx_mode & ~FullDuplex; /* duplex setting */
if (np->mii_if.full_duplex)
new_tx_mode |= FullDuplex;
if (np->tx_mode != new_tx_mode) {
np->tx_mode = new_tx_mode;
writel(np->tx_mode | MiiSoftReset, ioaddr + TxMode);
udelay(1000 );
writel(np->tx_mode, ioaddr + TxMode);
}
new_intr_timer_ctrl = np->intr_timer_ctrl & ~Timer10X;
if (np->speed100)
new_intr_timer_ctrl |= Timer10X;
if (np->intr_timer_ctrl != new_intr_timer_ctrl) {
np->intr_timer_ctrl = new_intr_timer_ctrl;
writel(new_intr_timer_ctrl, ioaddr + IntrTimerCtrl);
}
} else {
netif_carrier_off(dev);
printk(KERN_DEBUG "%s: Link is down\n" , dev->name);
}
}
static void netdev_error(struct net_device *dev, int intr_status)
{
struct netdev_private *np = netdev_priv(dev);
/* Came close to underrunning the Tx FIFO, increase threshold. */
if (intr_status & IntrTxDataLow) {
if (np->tx_threshold <= PKT_BUF_SZ / 16 ) {
writel(++np->tx_threshold, np->base + TxThreshold);
printk(KERN_NOTICE "%s: PCI bus congestion, increasing Tx FIFO threshold to %d bytes\n" ,
dev->name, np->tx_threshold * 16 );
} else
printk(KERN_WARNING "%s: PCI Tx underflow -- adapter is probably malfunctioning\n" , dev->name);
}
if (intr_status & IntrRxGFPDead) {
dev->stats.rx_fifo_errors++;
dev->stats.rx_errors++;
}
if (intr_status & (IntrNoTxCsum | IntrDMAErr)) {
dev->stats.tx_fifo_errors++;
dev->stats.tx_errors++;
}
if ((intr_status & ~(IntrNormalMask | IntrAbnormalSummary | IntrLinkChange | IntrStatsMax | IntrTxDataLow | IntrRxGFPDead | IntrNoTxCsum | IntrPCIPad)) && debug)
printk(KERN_ERR "%s: Something Wicked happened! %#8.8x.\n" ,
dev->name, intr_status);
}
static struct net_device_stats *get_stats(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->base;
/* This adapter architecture needs no SMP locks. */
dev->stats.tx_bytes = readl(ioaddr + 0 x57010);
dev->stats.rx_bytes = readl(ioaddr + 0 x57044);
dev->stats.tx_packets = readl(ioaddr + 0 x57000);
dev->stats.tx_aborted_errors =
readl(ioaddr + 0 x57024) + readl(ioaddr + 0 x57028);
dev->stats.tx_window_errors = readl(ioaddr + 0 x57018);
dev->stats.collisions =
readl(ioaddr + 0 x57004) + readl(ioaddr + 0 x57008);
/* The chip only need report frame silently dropped. */
dev->stats.rx_dropped += readw(ioaddr + RxDMAStatus);
writew(0 , ioaddr + RxDMAStatus);
dev->stats.rx_crc_errors = readl(ioaddr + 0 x5703C);
dev->stats.rx_frame_errors = readl(ioaddr + 0 x57040);
dev->stats.rx_length_errors = readl(ioaddr + 0 x57058);
dev->stats.rx_missed_errors = readl(ioaddr + 0 x5707C);
return &dev->stats;
}
#ifdef VLAN_SUPPORT
static u32 set_vlan_mode(struct netdev_private *np)
{
u32 ret = VlanMode;
u16 vid;
void __iomem *filter_addr = np->base + HashTable + 8 ;
int vlan_count = 0 ;
for_each_set_bit(vid, np->active_vlans, VLAN_N_VID) {
if (vlan_count == 32 )
break ;
writew(vid, filter_addr);
filter_addr += 16 ;
vlan_count++;
}
if (vlan_count == 32 ) {
ret |= PerfectFilterVlan;
while (vlan_count < 32 ) {
writew(0 , filter_addr);
filter_addr += 16 ;
vlan_count++;
}
}
return ret;
}
#endif /* VLAN_SUPPORT */
static void set_rx_mode(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->base;
u32 rx_mode = MinVLANPrio;
struct netdev_hw_addr *ha;
int i;
#ifdef VLAN_SUPPORT
rx_mode |= set_vlan_mode(np);
#endif /* VLAN_SUPPORT */
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
rx_mode |= AcceptAll;
} else if ((netdev_mc_count(dev) > multicast_filter_limit) ||
(dev->flags & IFF_ALLMULTI)) {
/* Too many to match, or accept all multicasts. */
rx_mode |= AcceptBroadcast|AcceptAllMulticast|PerfectFilter;
} else if (netdev_mc_count(dev) <= 14 ) {
/* Use the 16 element perfect filter, skip first two entries. */
void __iomem *filter_addr = ioaddr + PerfFilterTable + 2 * 16 ;
const __be16 *eaddrs;
netdev_for_each_mc_addr(ha, dev) {
eaddrs = (__be16 *) ha->addr;
writew(be16_to_cpu(eaddrs[2 ]), filter_addr); filter_addr += 4 ;
writew(be16_to_cpu(eaddrs[1 ]), filter_addr); filter_addr += 4 ;
writew(be16_to_cpu(eaddrs[0 ]), filter_addr); filter_addr += 8 ;
}
eaddrs = (const __be16 *)dev->dev_addr;
i = netdev_mc_count(dev) + 2 ;
while (i++ < 16 ) {
writew(be16_to_cpu(eaddrs[0 ]), filter_addr); filter_addr += 4 ;
writew(be16_to_cpu(eaddrs[1 ]), filter_addr); filter_addr += 4 ;
writew(be16_to_cpu(eaddrs[2 ]), filter_addr); filter_addr += 8 ;
}
rx_mode |= AcceptBroadcast|PerfectFilter;
} else {
/* Must use a multicast hash table. */
void __iomem *filter_addr;
const __be16 *eaddrs;
__le16 mc_filter[32 ] __attribute__ ((aligned(sizeof (long )))); /* Multicast hash filter */
memset(mc_filter, 0 , sizeof (mc_filter));
netdev_for_each_mc_addr(ha, dev) {
/* The chip uses the upper 9 CRC bits
as index into the hash table */
int bit_nr = ether_crc_le(ETH_ALEN, ha->addr) >> 23 ;
__le32 *fptr = (__le32 *) &mc_filter[(bit_nr >> 4 ) & ~1 ];
*fptr |= cpu_to_le32(1 << (bit_nr & 31 ));
}
/* Clear the perfect filter list, skip first two entries. */
filter_addr = ioaddr + PerfFilterTable + 2 * 16 ;
eaddrs = (const __be16 *)dev->dev_addr;
for (i = 2 ; i < 16 ; i++) {
writew(be16_to_cpu(eaddrs[0 ]), filter_addr); filter_addr += 4 ;
writew(be16_to_cpu(eaddrs[1 ]), filter_addr); filter_addr += 4 ;
writew(be16_to_cpu(eaddrs[2 ]), filter_addr); filter_addr += 8 ;
}
for (filter_addr = ioaddr + HashTable, i = 0 ; i < 32 ; filter_addr+= 16 , i++)
writew(mc_filter[i], filter_addr);
rx_mode |= AcceptBroadcast|PerfectFilter|HashFilter;
}
writel(rx_mode, ioaddr + RxFilterMode);
}
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);
check_duplex(dev);
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)
{
return debug;
}
static void set_msglevel(struct net_device *dev, u32 val)
{
debug = val;
}
static const struct ethtool_ops ethtool_ops = {
.begin = check_if_running,
.get_drvinfo = get_drvinfo,
.nway_reset = nway_reset,
.get_link = get_link,
.get_msglevel = get_msglevel,
.set_msglevel = set_msglevel,
.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);
struct mii_ioctl_data *data = if_mii(rq);
int rc;
if (!netif_running(dev))
return -EINVAL;
spin_lock_irq(&np->lock);
rc = generic_mii_ioctl(&np->mii_if, data, cmd, NULL);
spin_unlock_irq(&np->lock);
if ((cmd == SIOCSMIIREG) && (data->phy_id == np->phys[0 ]))
check_duplex(dev);
return rc;
}
static int netdev_close(struct net_device *dev)
{
struct netdev_private *np = netdev_priv(dev);
void __iomem *ioaddr = np->base;
int i;
netif_stop_queue(dev);
napi_disable(&np->napi);
if (debug > 1 ) {
printk(KERN_DEBUG "%s: Shutting down ethercard, Intr status %#8.8x.\n" ,
dev->name, (int ) readl(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. */
writel(0 , ioaddr + IntrEnable);
/* Stop the chip's Tx and Rx processes. */
writel(0 , ioaddr + GenCtrl);
readl(ioaddr + GenCtrl);
if (debug > 5 ) {
printk(KERN_DEBUG" Tx ring at %#llx:\n" ,
(long long ) np->tx_ring_dma);
for (i = 0 ; i < 8 /* TX_RING_SIZE is huge! */; i++)
printk(KERN_DEBUG " #%d desc. %#8.8x %#llx -> %#8.8x.\n" ,
i, le32_to_cpu(np->tx_ring[i].status),
(long long ) dma_to_cpu(np->tx_ring[i].addr),
le32_to_cpu(np->tx_done_q[i].status));
printk(KERN_DEBUG " Rx ring at %#llx -> %p:\n" ,
(long long ) np->rx_ring_dma, np->rx_done_q);
if (np->rx_done_q)
for (i = 0 ; i < 8 /* RX_RING_SIZE */; i++) {
printk(KERN_DEBUG " #%d desc. %#llx -> %#8.8x\n" ,
i, (long long ) dma_to_cpu(np->rx_ring[i].rxaddr), le32_to_cpu(np->rx_done_q[i].status));
}
}
free_irq(np->pci_dev->irq, dev);
/* Free all the skbuffs in the Rx queue. */
for (i = 0 ; i < RX_RING_SIZE; i++) {
np->rx_ring[i].rxaddr = cpu_to_dma(0 xBADF00D0); /* An invalid address. */
if (np->rx_info[i].skb != NULL) {
dma_unmap_single(&np->pci_dev->dev,
np->rx_info[i].mapping,
np->rx_buf_sz, DMA_FROM_DEVICE);
dev_kfree_skb(np->rx_info[i].skb);
}
np->rx_info[i].skb = NULL;
np->rx_info[i].mapping = 0 ;
}
for (i = 0 ; i < TX_RING_SIZE; i++) {
struct sk_buff *skb = np->tx_info[i].skb;
if (skb == NULL)
continue ;
dma_unmap_single(&np->pci_dev->dev, np->tx_info[i].mapping,
skb_first_frag_len(skb), DMA_TO_DEVICE);
np->tx_info[i].mapping = 0 ;
dev_kfree_skb(skb);
np->tx_info[i].skb = NULL;
}
return 0 ;
}
static int __maybe_unused starfire_suspend(struct device *dev_d)
{
struct net_device *dev = dev_get_drvdata(dev_d);
if (netif_running(dev)) {
netif_device_detach(dev);
netdev_close(dev);
}
return 0 ;
}
static int __maybe_unused starfire_resume(struct device *dev_d)
{
struct net_device *dev = dev_get_drvdata(dev_d);
if (netif_running(dev)) {
netdev_open(dev);
netif_device_attach(dev);
}
return 0 ;
}
static void starfire_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct netdev_private *np = netdev_priv(dev);
BUG_ON(!dev);
unregister_netdev(dev);
if (np->queue_mem)
dma_free_coherent(&pdev->dev, np->queue_mem_size,
np->queue_mem, np->queue_mem_dma);
/* XXX: add wakeup code -- requires firmware for MagicPacket */
pci_set_power_state(pdev, PCI_D3hot); /* go to sleep in D3 mode */
pci_disable_device(pdev);
iounmap(np->base);
pci_release_regions(pdev);
free_netdev(dev); /* Will also free np!! */
}
static SIMPLE_DEV_PM_OPS(starfire_pm_ops, starfire_suspend, starfire_resume);
static struct pci_driver starfire_driver = {
.name = DRV_NAME,
.probe = starfire_init_one,
.remove = starfire_remove_one,
.driver.pm = &starfire_pm_ops,
.id_table = starfire_pci_tbl,
};
static int __init starfire_init (void )
{
/* when a module, this is printed whether or not devices are found in probe */
#ifdef MODULE
printk(KERN_INFO DRV_NAME ": polling (NAPI) enabled\n" );
#endif
BUILD_BUG_ON(sizeof (dma_addr_t) != sizeof (netdrv_addr_t));
return pci_register_driver(&starfire_driver);
}
static void __exit starfire_cleanup (void )
{
pci_unregister_driver (&starfire_driver);
}
module_init(starfire_init);
module_exit(starfire_cleanup);
Messung V0.5 in Prozent C=92 H=87 G=89
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