| /* ---------------------------------------------------------------------------- |
| Linux PCMCIA ethernet adapter driver for the New Media Ethernet LAN. |
| nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao |
| |
| The Ethernet LAN uses the Advanced Micro Devices (AMD) Am79C940 Media |
| Access Controller for Ethernet (MACE). It is essentially the Am2150 |
| PCMCIA Ethernet card contained in the Am2150 Demo Kit. |
| |
| Written by Roger C. Pao <rpao@paonet.org> |
| Copyright 1995 Roger C. Pao |
| Linux 2.5 cleanups Copyright Red Hat 2003 |
| |
| This software may be used and distributed according to the terms of |
| the GNU General Public License. |
| |
| Ported to Linux 1.3.* network driver environment by |
| Matti Aarnio <mea@utu.fi> |
| |
| References |
| |
| Am2150 Technical Reference Manual, Revision 1.0, August 17, 1993 |
| Am79C940 (MACE) Data Sheet, 1994 |
| Am79C90 (C-LANCE) Data Sheet, 1994 |
| Linux PCMCIA Programmer's Guide v1.17 |
| /usr/src/linux/net/inet/dev.c, Linux kernel 1.2.8 |
| |
| Eric Mears, New Media Corporation |
| Tom Pollard, New Media Corporation |
| Dean Siasoyco, New Media Corporation |
| Ken Lesniak, Silicon Graphics, Inc. <lesniak@boston.sgi.com> |
| Donald Becker <becker@scyld.com> |
| David Hinds <dahinds@users.sourceforge.net> |
| |
| The Linux client driver is based on the 3c589_cs.c client driver by |
| David Hinds. |
| |
| The Linux network driver outline is based on the 3c589_cs.c driver, |
| the 8390.c driver, and the example skeleton.c kernel code, which are |
| by Donald Becker. |
| |
| The Am2150 network driver hardware interface code is based on the |
| OS/9000 driver for the New Media Ethernet LAN by Eric Mears. |
| |
| Special thanks for testing and help in debugging this driver goes |
| to Ken Lesniak. |
| |
| ------------------------------------------------------------------------------- |
| Driver Notes and Issues |
| ------------------------------------------------------------------------------- |
| |
| 1. Developed on a Dell 320SLi |
| PCMCIA Card Services 2.6.2 |
| Linux dell 1.2.10 #1 Thu Jun 29 20:23:41 PDT 1995 i386 |
| |
| 2. rc.pcmcia may require loading pcmcia_core with io_speed=300: |
| 'insmod pcmcia_core.o io_speed=300'. |
| This will avoid problems with fast systems which causes rx_framecnt |
| to return random values. |
| |
| 3. If hot extraction does not work for you, use 'ifconfig eth0 down' |
| before extraction. |
| |
| 4. There is a bad slow-down problem in this driver. |
| |
| 5. Future: Multicast processing. In the meantime, do _not_ compile your |
| kernel with multicast ip enabled. |
| |
| ------------------------------------------------------------------------------- |
| History |
| ------------------------------------------------------------------------------- |
| Log: nmclan_cs.c,v |
| * 2.5.75-ac1 2003/07/11 Alan Cox <alan@lxorguk.ukuu.org.uk> |
| * Fixed hang on card eject as we probe it |
| * Cleaned up to use new style locking. |
| * |
| * Revision 0.16 1995/07/01 06:42:17 rpao |
| * Bug fix: nmclan_reset() called CardServices incorrectly. |
| * |
| * Revision 0.15 1995/05/24 08:09:47 rpao |
| * Re-implement MULTI_TX dev->tbusy handling. |
| * |
| * Revision 0.14 1995/05/23 03:19:30 rpao |
| * Added, in nmclan_config(), "tuple.Attributes = 0;". |
| * Modified MACE ID check to ignore chip revision level. |
| * Avoid tx_free_frames race condition between _start_xmit and _interrupt. |
| * |
| * Revision 0.13 1995/05/18 05:56:34 rpao |
| * Statistics changes. |
| * Bug fix: nmclan_reset did not enable TX and RX: call restore_multicast_list. |
| * Bug fix: mace_interrupt checks ~MACE_IMR_DEFAULT. Fixes driver lockup. |
| * |
| * Revision 0.12 1995/05/14 00:12:23 rpao |
| * Statistics overhaul. |
| * |
| |
| 95/05/13 rpao V0.10a |
| Bug fix: MACE statistics counters used wrong I/O ports. |
| Bug fix: mace_interrupt() needed to allow statistics to be |
| processed without RX or TX interrupts pending. |
| 95/05/11 rpao V0.10 |
| Multiple transmit request processing. |
| Modified statistics to use MACE counters where possible. |
| 95/05/10 rpao V0.09 Bug fix: Must use IO_DATA_PATH_WIDTH_AUTO. |
| *Released |
| 95/05/10 rpao V0.08 |
| Bug fix: Make all non-exported functions private by using |
| static keyword. |
| Bug fix: Test IntrCnt _before_ reading MACE_IR. |
| 95/05/10 rpao V0.07 Statistics. |
| 95/05/09 rpao V0.06 Fix rx_framecnt problem by addition of PCIC wait states. |
| |
| ---------------------------------------------------------------------------- */ |
| |
| #define DRV_NAME "nmclan_cs" |
| #define DRV_VERSION "0.16" |
| |
| |
| /* ---------------------------------------------------------------------------- |
| Conditional Compilation Options |
| ---------------------------------------------------------------------------- */ |
| |
| #define MULTI_TX 0 |
| #define RESET_ON_TIMEOUT 1 |
| #define TX_INTERRUPTABLE 1 |
| #define RESET_XILINX 0 |
| |
| /* ---------------------------------------------------------------------------- |
| Include Files |
| ---------------------------------------------------------------------------- */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/ptrace.h> |
| #include <linux/slab.h> |
| #include <linux/string.h> |
| #include <linux/timer.h> |
| #include <linux/interrupt.h> |
| #include <linux/in.h> |
| #include <linux/delay.h> |
| #include <linux/ethtool.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/skbuff.h> |
| #include <linux/if_arp.h> |
| #include <linux/ioport.h> |
| #include <linux/bitops.h> |
| |
| #include <pcmcia/cs_types.h> |
| #include <pcmcia/cs.h> |
| #include <pcmcia/cisreg.h> |
| #include <pcmcia/cistpl.h> |
| #include <pcmcia/ds.h> |
| |
| #include <asm/uaccess.h> |
| #include <asm/io.h> |
| #include <asm/system.h> |
| |
| /* ---------------------------------------------------------------------------- |
| Defines |
| ---------------------------------------------------------------------------- */ |
| |
| #define ETHER_ADDR_LEN ETH_ALEN |
| /* 6 bytes in an Ethernet Address */ |
| #define MACE_LADRF_LEN 8 |
| /* 8 bytes in Logical Address Filter */ |
| |
| /* Loop Control Defines */ |
| #define MACE_MAX_IR_ITERATIONS 10 |
| #define MACE_MAX_RX_ITERATIONS 12 |
| /* |
| TBD: Dean brought this up, and I assumed the hardware would |
| handle it: |
| |
| If MACE_MAX_RX_ITERATIONS is > 1, rx_framecnt may still be |
| non-zero when the isr exits. We may not get another interrupt |
| to process the remaining packets for some time. |
| */ |
| |
| /* |
| The Am2150 has a Xilinx XC3042 field programmable gate array (FPGA) |
| which manages the interface between the MACE and the PCMCIA bus. It |
| also includes buffer management for the 32K x 8 SRAM to control up to |
| four transmit and 12 receive frames at a time. |
| */ |
| #define AM2150_MAX_TX_FRAMES 4 |
| #define AM2150_MAX_RX_FRAMES 12 |
| |
| /* Am2150 Ethernet Card I/O Mapping */ |
| #define AM2150_RCV 0x00 |
| #define AM2150_XMT 0x04 |
| #define AM2150_XMT_SKIP 0x09 |
| #define AM2150_RCV_NEXT 0x0A |
| #define AM2150_RCV_FRAME_COUNT 0x0B |
| #define AM2150_MACE_BANK 0x0C |
| #define AM2150_MACE_BASE 0x10 |
| |
| /* MACE Registers */ |
| #define MACE_RCVFIFO 0 |
| #define MACE_XMTFIFO 1 |
| #define MACE_XMTFC 2 |
| #define MACE_XMTFS 3 |
| #define MACE_XMTRC 4 |
| #define MACE_RCVFC 5 |
| #define MACE_RCVFS 6 |
| #define MACE_FIFOFC 7 |
| #define MACE_IR 8 |
| #define MACE_IMR 9 |
| #define MACE_PR 10 |
| #define MACE_BIUCC 11 |
| #define MACE_FIFOCC 12 |
| #define MACE_MACCC 13 |
| #define MACE_PLSCC 14 |
| #define MACE_PHYCC 15 |
| #define MACE_CHIPIDL 16 |
| #define MACE_CHIPIDH 17 |
| #define MACE_IAC 18 |
| /* Reserved */ |
| #define MACE_LADRF 20 |
| #define MACE_PADR 21 |
| /* Reserved */ |
| /* Reserved */ |
| #define MACE_MPC 24 |
| /* Reserved */ |
| #define MACE_RNTPC 26 |
| #define MACE_RCVCC 27 |
| /* Reserved */ |
| #define MACE_UTR 29 |
| #define MACE_RTR1 30 |
| #define MACE_RTR2 31 |
| |
| /* MACE Bit Masks */ |
| #define MACE_XMTRC_EXDEF 0x80 |
| #define MACE_XMTRC_XMTRC 0x0F |
| |
| #define MACE_XMTFS_XMTSV 0x80 |
| #define MACE_XMTFS_UFLO 0x40 |
| #define MACE_XMTFS_LCOL 0x20 |
| #define MACE_XMTFS_MORE 0x10 |
| #define MACE_XMTFS_ONE 0x08 |
| #define MACE_XMTFS_DEFER 0x04 |
| #define MACE_XMTFS_LCAR 0x02 |
| #define MACE_XMTFS_RTRY 0x01 |
| |
| #define MACE_RCVFS_RCVSTS 0xF000 |
| #define MACE_RCVFS_OFLO 0x8000 |
| #define MACE_RCVFS_CLSN 0x4000 |
| #define MACE_RCVFS_FRAM 0x2000 |
| #define MACE_RCVFS_FCS 0x1000 |
| |
| #define MACE_FIFOFC_RCVFC 0xF0 |
| #define MACE_FIFOFC_XMTFC 0x0F |
| |
| #define MACE_IR_JAB 0x80 |
| #define MACE_IR_BABL 0x40 |
| #define MACE_IR_CERR 0x20 |
| #define MACE_IR_RCVCCO 0x10 |
| #define MACE_IR_RNTPCO 0x08 |
| #define MACE_IR_MPCO 0x04 |
| #define MACE_IR_RCVINT 0x02 |
| #define MACE_IR_XMTINT 0x01 |
| |
| #define MACE_MACCC_PROM 0x80 |
| #define MACE_MACCC_DXMT2PD 0x40 |
| #define MACE_MACCC_EMBA 0x20 |
| #define MACE_MACCC_RESERVED 0x10 |
| #define MACE_MACCC_DRCVPA 0x08 |
| #define MACE_MACCC_DRCVBC 0x04 |
| #define MACE_MACCC_ENXMT 0x02 |
| #define MACE_MACCC_ENRCV 0x01 |
| |
| #define MACE_PHYCC_LNKFL 0x80 |
| #define MACE_PHYCC_DLNKTST 0x40 |
| #define MACE_PHYCC_REVPOL 0x20 |
| #define MACE_PHYCC_DAPC 0x10 |
| #define MACE_PHYCC_LRT 0x08 |
| #define MACE_PHYCC_ASEL 0x04 |
| #define MACE_PHYCC_RWAKE 0x02 |
| #define MACE_PHYCC_AWAKE 0x01 |
| |
| #define MACE_IAC_ADDRCHG 0x80 |
| #define MACE_IAC_PHYADDR 0x04 |
| #define MACE_IAC_LOGADDR 0x02 |
| |
| #define MACE_UTR_RTRE 0x80 |
| #define MACE_UTR_RTRD 0x40 |
| #define MACE_UTR_RPA 0x20 |
| #define MACE_UTR_FCOLL 0x10 |
| #define MACE_UTR_RCVFCSE 0x08 |
| #define MACE_UTR_LOOP_INCL_MENDEC 0x06 |
| #define MACE_UTR_LOOP_NO_MENDEC 0x04 |
| #define MACE_UTR_LOOP_EXTERNAL 0x02 |
| #define MACE_UTR_LOOP_NONE 0x00 |
| #define MACE_UTR_RESERVED 0x01 |
| |
| /* Switch MACE register bank (only 0 and 1 are valid) */ |
| #define MACEBANK(win_num) outb((win_num), ioaddr + AM2150_MACE_BANK) |
| |
| #define MACE_IMR_DEFAULT \ |
| (0xFF - \ |
| ( \ |
| MACE_IR_CERR | \ |
| MACE_IR_RCVCCO | \ |
| MACE_IR_RNTPCO | \ |
| MACE_IR_MPCO | \ |
| MACE_IR_RCVINT | \ |
| MACE_IR_XMTINT \ |
| ) \ |
| ) |
| #undef MACE_IMR_DEFAULT |
| #define MACE_IMR_DEFAULT 0x00 /* New statistics handling: grab everything */ |
| |
| #define TX_TIMEOUT ((400*HZ)/1000) |
| |
| /* ---------------------------------------------------------------------------- |
| Type Definitions |
| ---------------------------------------------------------------------------- */ |
| |
| typedef struct _mace_statistics { |
| /* MACE_XMTFS */ |
| int xmtsv; |
| int uflo; |
| int lcol; |
| int more; |
| int one; |
| int defer; |
| int lcar; |
| int rtry; |
| |
| /* MACE_XMTRC */ |
| int exdef; |
| int xmtrc; |
| |
| /* RFS1--Receive Status (RCVSTS) */ |
| int oflo; |
| int clsn; |
| int fram; |
| int fcs; |
| |
| /* RFS2--Runt Packet Count (RNTPC) */ |
| int rfs_rntpc; |
| |
| /* RFS3--Receive Collision Count (RCVCC) */ |
| int rfs_rcvcc; |
| |
| /* MACE_IR */ |
| int jab; |
| int babl; |
| int cerr; |
| int rcvcco; |
| int rntpco; |
| int mpco; |
| |
| /* MACE_MPC */ |
| int mpc; |
| |
| /* MACE_RNTPC */ |
| int rntpc; |
| |
| /* MACE_RCVCC */ |
| int rcvcc; |
| } mace_statistics; |
| |
| typedef struct _mace_private { |
| struct pcmcia_device *p_dev; |
| dev_node_t node; |
| struct net_device_stats linux_stats; /* Linux statistics counters */ |
| mace_statistics mace_stats; /* MACE chip statistics counters */ |
| |
| /* restore_multicast_list() state variables */ |
| int multicast_ladrf[MACE_LADRF_LEN]; /* Logical address filter */ |
| int multicast_num_addrs; |
| |
| char tx_free_frames; /* Number of free transmit frame buffers */ |
| char tx_irq_disabled; /* MACE TX interrupt disabled */ |
| |
| spinlock_t bank_lock; /* Must be held if you step off bank 0 */ |
| } mace_private; |
| |
| /* ---------------------------------------------------------------------------- |
| Private Global Variables |
| ---------------------------------------------------------------------------- */ |
| |
| #ifdef PCMCIA_DEBUG |
| static char rcsid[] = |
| "nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao"; |
| static char *version = |
| DRV_NAME " " DRV_VERSION " (Roger C. Pao)"; |
| #endif |
| |
| static const char *if_names[]={ |
| "Auto", "10baseT", "BNC", |
| }; |
| |
| /* ---------------------------------------------------------------------------- |
| Parameters |
| These are the parameters that can be set during loading with |
| 'insmod'. |
| ---------------------------------------------------------------------------- */ |
| |
| MODULE_DESCRIPTION("New Media PCMCIA ethernet driver"); |
| MODULE_LICENSE("GPL"); |
| |
| #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) |
| |
| /* 0=auto, 1=10baseT, 2 = 10base2, default=auto */ |
| INT_MODULE_PARM(if_port, 0); |
| |
| #ifdef PCMCIA_DEBUG |
| INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); |
| #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) |
| #else |
| #define DEBUG(n, args...) |
| #endif |
| |
| /* ---------------------------------------------------------------------------- |
| Function Prototypes |
| ---------------------------------------------------------------------------- */ |
| |
| static int nmclan_config(struct pcmcia_device *link); |
| static void nmclan_release(struct pcmcia_device *link); |
| |
| static void nmclan_reset(struct net_device *dev); |
| static int mace_config(struct net_device *dev, struct ifmap *map); |
| static int mace_open(struct net_device *dev); |
| static int mace_close(struct net_device *dev); |
| static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev); |
| static void mace_tx_timeout(struct net_device *dev); |
| static irqreturn_t mace_interrupt(int irq, void *dev_id); |
| static struct net_device_stats *mace_get_stats(struct net_device *dev); |
| static int mace_rx(struct net_device *dev, unsigned char RxCnt); |
| static void restore_multicast_list(struct net_device *dev); |
| static void set_multicast_list(struct net_device *dev); |
| static const struct ethtool_ops netdev_ethtool_ops; |
| |
| |
| static void nmclan_detach(struct pcmcia_device *p_dev); |
| |
| /* ---------------------------------------------------------------------------- |
| nmclan_attach |
| Creates an "instance" of the driver, allocating local data |
| structures for one device. The device is registered with Card |
| Services. |
| ---------------------------------------------------------------------------- */ |
| |
| static int nmclan_probe(struct pcmcia_device *link) |
| { |
| mace_private *lp; |
| struct net_device *dev; |
| |
| DEBUG(0, "nmclan_attach()\n"); |
| DEBUG(1, "%s\n", rcsid); |
| |
| /* Create new ethernet device */ |
| dev = alloc_etherdev(sizeof(mace_private)); |
| if (!dev) |
| return -ENOMEM; |
| lp = netdev_priv(dev); |
| lp->p_dev = link; |
| link->priv = dev; |
| |
| spin_lock_init(&lp->bank_lock); |
| link->io.NumPorts1 = 32; |
| link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; |
| link->io.IOAddrLines = 5; |
| link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; |
| link->irq.IRQInfo1 = IRQ_LEVEL_ID; |
| link->irq.Handler = &mace_interrupt; |
| link->irq.Instance = dev; |
| link->conf.Attributes = CONF_ENABLE_IRQ; |
| link->conf.IntType = INT_MEMORY_AND_IO; |
| link->conf.ConfigIndex = 1; |
| link->conf.Present = PRESENT_OPTION; |
| |
| lp->tx_free_frames=AM2150_MAX_TX_FRAMES; |
| |
| dev->hard_start_xmit = &mace_start_xmit; |
| dev->set_config = &mace_config; |
| dev->get_stats = &mace_get_stats; |
| dev->set_multicast_list = &set_multicast_list; |
| SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
| dev->open = &mace_open; |
| dev->stop = &mace_close; |
| #ifdef HAVE_TX_TIMEOUT |
| dev->tx_timeout = mace_tx_timeout; |
| dev->watchdog_timeo = TX_TIMEOUT; |
| #endif |
| |
| return nmclan_config(link); |
| } /* nmclan_attach */ |
| |
| /* ---------------------------------------------------------------------------- |
| nmclan_detach |
| This deletes a driver "instance". The device is de-registered |
| with Card Services. If it has been released, all local data |
| structures are freed. Otherwise, the structures will be freed |
| when the device is released. |
| ---------------------------------------------------------------------------- */ |
| |
| static void nmclan_detach(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| |
| DEBUG(0, "nmclan_detach(0x%p)\n", link); |
| |
| if (link->dev_node) |
| unregister_netdev(dev); |
| |
| nmclan_release(link); |
| |
| free_netdev(dev); |
| } /* nmclan_detach */ |
| |
| /* ---------------------------------------------------------------------------- |
| mace_read |
| Reads a MACE register. This is bank independent; however, the |
| caller must ensure that this call is not interruptable. We are |
| assuming that during normal operation, the MACE is always in |
| bank 0. |
| ---------------------------------------------------------------------------- */ |
| static int mace_read(mace_private *lp, unsigned int ioaddr, int reg) |
| { |
| int data = 0xFF; |
| unsigned long flags; |
| |
| switch (reg >> 4) { |
| case 0: /* register 0-15 */ |
| data = inb(ioaddr + AM2150_MACE_BASE + reg); |
| break; |
| case 1: /* register 16-31 */ |
| spin_lock_irqsave(&lp->bank_lock, flags); |
| MACEBANK(1); |
| data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F)); |
| MACEBANK(0); |
| spin_unlock_irqrestore(&lp->bank_lock, flags); |
| break; |
| } |
| return (data & 0xFF); |
| } /* mace_read */ |
| |
| /* ---------------------------------------------------------------------------- |
| mace_write |
| Writes to a MACE register. This is bank independent; however, |
| the caller must ensure that this call is not interruptable. We |
| are assuming that during normal operation, the MACE is always in |
| bank 0. |
| ---------------------------------------------------------------------------- */ |
| static void mace_write(mace_private *lp, unsigned int ioaddr, int reg, |
| int data) |
| { |
| unsigned long flags; |
| |
| switch (reg >> 4) { |
| case 0: /* register 0-15 */ |
| outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg); |
| break; |
| case 1: /* register 16-31 */ |
| spin_lock_irqsave(&lp->bank_lock, flags); |
| MACEBANK(1); |
| outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F)); |
| MACEBANK(0); |
| spin_unlock_irqrestore(&lp->bank_lock, flags); |
| break; |
| } |
| } /* mace_write */ |
| |
| /* ---------------------------------------------------------------------------- |
| mace_init |
| Resets the MACE chip. |
| ---------------------------------------------------------------------------- */ |
| static int mace_init(mace_private *lp, unsigned int ioaddr, char *enet_addr) |
| { |
| int i; |
| int ct = 0; |
| |
| /* MACE Software reset */ |
| mace_write(lp, ioaddr, MACE_BIUCC, 1); |
| while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) { |
| /* Wait for reset bit to be cleared automatically after <= 200ns */; |
| if(++ct > 500) |
| { |
| printk(KERN_ERR "mace: reset failed, card removed ?\n"); |
| return -1; |
| } |
| udelay(1); |
| } |
| mace_write(lp, ioaddr, MACE_BIUCC, 0); |
| |
| /* The Am2150 requires that the MACE FIFOs operate in burst mode. */ |
| mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F); |
| |
| mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */ |
| mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */ |
| |
| /* |
| * Bit 2-1 PORTSEL[1-0] Port Select. |
| * 00 AUI/10Base-2 |
| * 01 10Base-T |
| * 10 DAI Port (reserved in Am2150) |
| * 11 GPSI |
| * For this card, only the first two are valid. |
| * So, PLSCC should be set to |
| * 0x00 for 10Base-2 |
| * 0x02 for 10Base-T |
| * Or just set ASEL in PHYCC below! |
| */ |
| switch (if_port) { |
| case 1: |
| mace_write(lp, ioaddr, MACE_PLSCC, 0x02); |
| break; |
| case 2: |
| mace_write(lp, ioaddr, MACE_PLSCC, 0x00); |
| break; |
| default: |
| mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4); |
| /* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden, |
| and the MACE device will automatically select the operating media |
| interface port. */ |
| break; |
| } |
| |
| mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR); |
| /* Poll ADDRCHG bit */ |
| ct = 0; |
| while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG) |
| { |
| if(++ ct > 500) |
| { |
| printk(KERN_ERR "mace: ADDRCHG timeout, card removed ?\n"); |
| return -1; |
| } |
| } |
| /* Set PADR register */ |
| for (i = 0; i < ETHER_ADDR_LEN; i++) |
| mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]); |
| |
| /* MAC Configuration Control Register should be written last */ |
| /* Let set_multicast_list set this. */ |
| /* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */ |
| mace_write(lp, ioaddr, MACE_MACCC, 0x00); |
| return 0; |
| } /* mace_init */ |
| |
| /* ---------------------------------------------------------------------------- |
| nmclan_config |
| This routine is scheduled to run after a CARD_INSERTION event |
| is received, to configure the PCMCIA socket, and to make the |
| ethernet device available to the system. |
| ---------------------------------------------------------------------------- */ |
| |
| #define CS_CHECK(fn, ret) \ |
| do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) |
| |
| static int nmclan_config(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| mace_private *lp = netdev_priv(dev); |
| tuple_t tuple; |
| u_char buf[64]; |
| int i, last_ret, last_fn; |
| unsigned int ioaddr; |
| |
| DEBUG(0, "nmclan_config(0x%p)\n", link); |
| |
| CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io)); |
| CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); |
| CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); |
| dev->irq = link->irq.AssignedIRQ; |
| dev->base_addr = link->io.BasePort1; |
| |
| ioaddr = dev->base_addr; |
| |
| /* Read the ethernet address from the CIS. */ |
| tuple.DesiredTuple = 0x80 /* CISTPL_CFTABLE_ENTRY_MISC */; |
| tuple.TupleData = buf; |
| tuple.TupleDataMax = 64; |
| tuple.TupleOffset = 0; |
| tuple.Attributes = 0; |
| CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); |
| CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple)); |
| memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN); |
| |
| /* Verify configuration by reading the MACE ID. */ |
| { |
| char sig[2]; |
| |
| sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL); |
| sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH); |
| if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) { |
| DEBUG(0, "nmclan_cs configured: mace id=%x %x\n", |
| sig[0], sig[1]); |
| } else { |
| printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should" |
| " be 0x40 0x?9\n", sig[0], sig[1]); |
| return -ENODEV; |
| } |
| } |
| |
| if(mace_init(lp, ioaddr, dev->dev_addr) == -1) |
| goto failed; |
| |
| /* The if_port symbol can be set when the module is loaded */ |
| if (if_port <= 2) |
| dev->if_port = if_port; |
| else |
| printk(KERN_NOTICE "nmclan_cs: invalid if_port requested\n"); |
| |
| link->dev_node = &lp->node; |
| SET_NETDEV_DEV(dev, &handle_to_dev(link)); |
| |
| i = register_netdev(dev); |
| if (i != 0) { |
| printk(KERN_NOTICE "nmclan_cs: register_netdev() failed\n"); |
| link->dev_node = NULL; |
| goto failed; |
| } |
| |
| strcpy(lp->node.dev_name, dev->name); |
| |
| printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port," |
| " hw_addr %pM\n", |
| dev->name, dev->base_addr, dev->irq, if_names[dev->if_port], |
| dev->dev_addr); |
| return 0; |
| |
| cs_failed: |
| cs_error(link, last_fn, last_ret); |
| failed: |
| nmclan_release(link); |
| return -ENODEV; |
| } /* nmclan_config */ |
| |
| /* ---------------------------------------------------------------------------- |
| nmclan_release |
| After a card is removed, nmclan_release() will unregister the |
| net device, and release the PCMCIA configuration. If the device |
| is still open, this will be postponed until it is closed. |
| ---------------------------------------------------------------------------- */ |
| static void nmclan_release(struct pcmcia_device *link) |
| { |
| DEBUG(0, "nmclan_release(0x%p)\n", link); |
| pcmcia_disable_device(link); |
| } |
| |
| static int nmclan_suspend(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| |
| if (link->open) |
| netif_device_detach(dev); |
| |
| return 0; |
| } |
| |
| static int nmclan_resume(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| |
| if (link->open) { |
| nmclan_reset(dev); |
| netif_device_attach(dev); |
| } |
| |
| return 0; |
| } |
| |
| |
| /* ---------------------------------------------------------------------------- |
| nmclan_reset |
| Reset and restore all of the Xilinx and MACE registers. |
| ---------------------------------------------------------------------------- */ |
| static void nmclan_reset(struct net_device *dev) |
| { |
| mace_private *lp = netdev_priv(dev); |
| |
| #if RESET_XILINX |
| struct pcmcia_device *link = &lp->link; |
| conf_reg_t reg; |
| u_long OrigCorValue; |
| |
| /* Save original COR value */ |
| reg.Function = 0; |
| reg.Action = CS_READ; |
| reg.Offset = CISREG_COR; |
| reg.Value = 0; |
| pcmcia_access_configuration_register(link, ®); |
| OrigCorValue = reg.Value; |
| |
| /* Reset Xilinx */ |
| reg.Action = CS_WRITE; |
| reg.Offset = CISREG_COR; |
| DEBUG(1, "nmclan_reset: OrigCorValue=0x%lX, resetting...\n", |
| OrigCorValue); |
| reg.Value = COR_SOFT_RESET; |
| pcmcia_access_configuration_register(link, ®); |
| /* Need to wait for 20 ms for PCMCIA to finish reset. */ |
| |
| /* Restore original COR configuration index */ |
| reg.Value = COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK); |
| pcmcia_access_configuration_register(link, ®); |
| /* Xilinx is now completely reset along with the MACE chip. */ |
| lp->tx_free_frames=AM2150_MAX_TX_FRAMES; |
| |
| #endif /* #if RESET_XILINX */ |
| |
| /* Xilinx is now completely reset along with the MACE chip. */ |
| lp->tx_free_frames=AM2150_MAX_TX_FRAMES; |
| |
| /* Reinitialize the MACE chip for operation. */ |
| mace_init(lp, dev->base_addr, dev->dev_addr); |
| mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT); |
| |
| /* Restore the multicast list and enable TX and RX. */ |
| restore_multicast_list(dev); |
| } /* nmclan_reset */ |
| |
| /* ---------------------------------------------------------------------------- |
| mace_config |
| [Someone tell me what this is supposed to do? Is if_port a defined |
| standard? If so, there should be defines to indicate 1=10Base-T, |
| 2=10Base-2, etc. including limited automatic detection.] |
| ---------------------------------------------------------------------------- */ |
| static int mace_config(struct net_device *dev, struct ifmap *map) |
| { |
| if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { |
| if (map->port <= 2) { |
| dev->if_port = map->port; |
| printk(KERN_INFO "%s: switched to %s port\n", dev->name, |
| if_names[dev->if_port]); |
| } else |
| return -EINVAL; |
| } |
| return 0; |
| } /* mace_config */ |
| |
| /* ---------------------------------------------------------------------------- |
| mace_open |
| Open device driver. |
| ---------------------------------------------------------------------------- */ |
| static int mace_open(struct net_device *dev) |
| { |
| unsigned int ioaddr = dev->base_addr; |
| mace_private *lp = netdev_priv(dev); |
| struct pcmcia_device *link = lp->p_dev; |
| |
| if (!pcmcia_dev_present(link)) |
| return -ENODEV; |
| |
| link->open++; |
| |
| MACEBANK(0); |
| |
| netif_start_queue(dev); |
| nmclan_reset(dev); |
| |
| return 0; /* Always succeed */ |
| } /* mace_open */ |
| |
| /* ---------------------------------------------------------------------------- |
| mace_close |
| Closes device driver. |
| ---------------------------------------------------------------------------- */ |
| static int mace_close(struct net_device *dev) |
| { |
| unsigned int ioaddr = dev->base_addr; |
| mace_private *lp = netdev_priv(dev); |
| struct pcmcia_device *link = lp->p_dev; |
| |
| DEBUG(2, "%s: shutting down ethercard.\n", dev->name); |
| |
| /* Mask off all interrupts from the MACE chip. */ |
| outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR); |
| |
| link->open--; |
| netif_stop_queue(dev); |
| |
| return 0; |
| } /* mace_close */ |
| |
| static void netdev_get_drvinfo(struct net_device *dev, |
| struct ethtool_drvinfo *info) |
| { |
| strcpy(info->driver, DRV_NAME); |
| strcpy(info->version, DRV_VERSION); |
| sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr); |
| } |
| |
| #ifdef PCMCIA_DEBUG |
| static u32 netdev_get_msglevel(struct net_device *dev) |
| { |
| return pc_debug; |
| } |
| |
| static void netdev_set_msglevel(struct net_device *dev, u32 level) |
| { |
| pc_debug = level; |
| } |
| #endif /* PCMCIA_DEBUG */ |
| |
| static const struct ethtool_ops netdev_ethtool_ops = { |
| .get_drvinfo = netdev_get_drvinfo, |
| #ifdef PCMCIA_DEBUG |
| .get_msglevel = netdev_get_msglevel, |
| .set_msglevel = netdev_set_msglevel, |
| #endif /* PCMCIA_DEBUG */ |
| }; |
| |
| /* ---------------------------------------------------------------------------- |
| mace_start_xmit |
| This routine begins the packet transmit function. When completed, |
| it will generate a transmit interrupt. |
| |
| According to /usr/src/linux/net/inet/dev.c, if _start_xmit |
| returns 0, the "packet is now solely the responsibility of the |
| driver." If _start_xmit returns non-zero, the "transmission |
| failed, put skb back into a list." |
| ---------------------------------------------------------------------------- */ |
| |
| static void mace_tx_timeout(struct net_device *dev) |
| { |
| mace_private *lp = netdev_priv(dev); |
| struct pcmcia_device *link = lp->p_dev; |
| |
| printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name); |
| #if RESET_ON_TIMEOUT |
| printk("resetting card\n"); |
| pcmcia_reset_card(link->socket); |
| #else /* #if RESET_ON_TIMEOUT */ |
| printk("NOT resetting card\n"); |
| #endif /* #if RESET_ON_TIMEOUT */ |
| dev->trans_start = jiffies; |
| netif_wake_queue(dev); |
| } |
| |
| static int mace_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| { |
| mace_private *lp = netdev_priv(dev); |
| unsigned int ioaddr = dev->base_addr; |
| |
| netif_stop_queue(dev); |
| |
| DEBUG(3, "%s: mace_start_xmit(length = %ld) called.\n", |
| dev->name, (long)skb->len); |
| |
| #if (!TX_INTERRUPTABLE) |
| /* Disable MACE TX interrupts. */ |
| outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT, |
| ioaddr + AM2150_MACE_BASE + MACE_IMR); |
| lp->tx_irq_disabled=1; |
| #endif /* #if (!TX_INTERRUPTABLE) */ |
| |
| { |
| /* This block must not be interrupted by another transmit request! |
| mace_tx_timeout will take care of timer-based retransmissions from |
| the upper layers. The interrupt handler is guaranteed never to |
| service a transmit interrupt while we are in here. |
| */ |
| |
| lp->linux_stats.tx_bytes += skb->len; |
| lp->tx_free_frames--; |
| |
| /* WARNING: Write the _exact_ number of bytes written in the header! */ |
| /* Put out the word header [must be an outw()] . . . */ |
| outw(skb->len, ioaddr + AM2150_XMT); |
| /* . . . and the packet [may be any combination of outw() and outb()] */ |
| outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1); |
| if (skb->len & 1) { |
| /* Odd byte transfer */ |
| outb(skb->data[skb->len-1], ioaddr + AM2150_XMT); |
| } |
| |
| dev->trans_start = jiffies; |
| |
| #if MULTI_TX |
| if (lp->tx_free_frames > 0) |
| netif_start_queue(dev); |
| #endif /* #if MULTI_TX */ |
| } |
| |
| #if (!TX_INTERRUPTABLE) |
| /* Re-enable MACE TX interrupts. */ |
| lp->tx_irq_disabled=0; |
| outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR); |
| #endif /* #if (!TX_INTERRUPTABLE) */ |
| |
| dev_kfree_skb(skb); |
| |
| return 0; |
| } /* mace_start_xmit */ |
| |
| /* ---------------------------------------------------------------------------- |
| mace_interrupt |
| The interrupt handler. |
| ---------------------------------------------------------------------------- */ |
| static irqreturn_t mace_interrupt(int irq, void *dev_id) |
| { |
| struct net_device *dev = (struct net_device *) dev_id; |
| mace_private *lp = netdev_priv(dev); |
| unsigned int ioaddr; |
| int status; |
| int IntrCnt = MACE_MAX_IR_ITERATIONS; |
| |
| if (dev == NULL) { |
| DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.\n", |
| irq); |
| return IRQ_NONE; |
| } |
| |
| ioaddr = dev->base_addr; |
| |
| if (lp->tx_irq_disabled) { |
| printk( |
| (lp->tx_irq_disabled? |
| KERN_NOTICE "%s: Interrupt with tx_irq_disabled " |
| "[isr=%02X, imr=%02X]\n": |
| KERN_NOTICE "%s: Re-entering the interrupt handler " |
| "[isr=%02X, imr=%02X]\n"), |
| dev->name, |
| inb(ioaddr + AM2150_MACE_BASE + MACE_IR), |
| inb(ioaddr + AM2150_MACE_BASE + MACE_IMR) |
| ); |
| /* WARNING: MACE_IR has been read! */ |
| return IRQ_NONE; |
| } |
| |
| if (!netif_device_present(dev)) { |
| DEBUG(2, "%s: interrupt from dead card\n", dev->name); |
| return IRQ_NONE; |
| } |
| |
| do { |
| /* WARNING: MACE_IR is a READ/CLEAR port! */ |
| status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR); |
| |
| DEBUG(3, "mace_interrupt: irq 0x%X status 0x%X.\n", irq, status); |
| |
| if (status & MACE_IR_RCVINT) { |
| mace_rx(dev, MACE_MAX_RX_ITERATIONS); |
| } |
| |
| if (status & MACE_IR_XMTINT) { |
| unsigned char fifofc; |
| unsigned char xmtrc; |
| unsigned char xmtfs; |
| |
| fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC); |
| if ((fifofc & MACE_FIFOFC_XMTFC)==0) { |
| lp->linux_stats.tx_errors++; |
| outb(0xFF, ioaddr + AM2150_XMT_SKIP); |
| } |
| |
| /* Transmit Retry Count (XMTRC, reg 4) */ |
| xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC); |
| if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++; |
| lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC); |
| |
| if ( |
| (xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) & |
| MACE_XMTFS_XMTSV /* Transmit Status Valid */ |
| ) { |
| lp->mace_stats.xmtsv++; |
| |
| if (xmtfs & ~MACE_XMTFS_XMTSV) { |
| if (xmtfs & MACE_XMTFS_UFLO) { |
| /* Underflow. Indicates that the Transmit FIFO emptied before |
| the end of frame was reached. */ |
| lp->mace_stats.uflo++; |
| } |
| if (xmtfs & MACE_XMTFS_LCOL) { |
| /* Late Collision */ |
| lp->mace_stats.lcol++; |
| } |
| if (xmtfs & MACE_XMTFS_MORE) { |
| /* MORE than one retry was needed */ |
| lp->mace_stats.more++; |
| } |
| if (xmtfs & MACE_XMTFS_ONE) { |
| /* Exactly ONE retry occurred */ |
| lp->mace_stats.one++; |
| } |
| if (xmtfs & MACE_XMTFS_DEFER) { |
| /* Transmission was defered */ |
| lp->mace_stats.defer++; |
| } |
| if (xmtfs & MACE_XMTFS_LCAR) { |
| /* Loss of carrier */ |
| lp->mace_stats.lcar++; |
| } |
| if (xmtfs & MACE_XMTFS_RTRY) { |
| /* Retry error: transmit aborted after 16 attempts */ |
| lp->mace_stats.rtry++; |
| } |
| } /* if (xmtfs & ~MACE_XMTFS_XMTSV) */ |
| |
| } /* if (xmtfs & MACE_XMTFS_XMTSV) */ |
| |
| lp->linux_stats.tx_packets++; |
| lp->tx_free_frames++; |
| netif_wake_queue(dev); |
| } /* if (status & MACE_IR_XMTINT) */ |
| |
| if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) { |
| if (status & MACE_IR_JAB) { |
| /* Jabber Error. Excessive transmit duration (20-150ms). */ |
| lp->mace_stats.jab++; |
| } |
| if (status & MACE_IR_BABL) { |
| /* Babble Error. >1518 bytes transmitted. */ |
| lp->mace_stats.babl++; |
| } |
| if (status & MACE_IR_CERR) { |
| /* Collision Error. CERR indicates the absence of the |
| Signal Quality Error Test message after a packet |
| transmission. */ |
| lp->mace_stats.cerr++; |
| } |
| if (status & MACE_IR_RCVCCO) { |
| /* Receive Collision Count Overflow; */ |
| lp->mace_stats.rcvcco++; |
| } |
| if (status & MACE_IR_RNTPCO) { |
| /* Runt Packet Count Overflow */ |
| lp->mace_stats.rntpco++; |
| } |
| if (status & MACE_IR_MPCO) { |
| /* Missed Packet Count Overflow */ |
| lp->mace_stats.mpco++; |
| } |
| } /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */ |
| |
| } while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt)); |
| |
| return IRQ_HANDLED; |
| } /* mace_interrupt */ |
| |
| /* ---------------------------------------------------------------------------- |
| mace_rx |
| Receives packets. |
| ---------------------------------------------------------------------------- */ |
| static int mace_rx(struct net_device *dev, unsigned char RxCnt) |
| { |
| mace_private *lp = netdev_priv(dev); |
| unsigned int ioaddr = dev->base_addr; |
| unsigned char rx_framecnt; |
| unsigned short rx_status; |
| |
| while ( |
| ((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) && |
| (rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */ |
| (RxCnt--) |
| ) { |
| rx_status = inw(ioaddr + AM2150_RCV); |
| |
| DEBUG(3, "%s: in mace_rx(), framecnt 0x%X, rx_status" |
| " 0x%X.\n", dev->name, rx_framecnt, rx_status); |
| |
| if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */ |
| lp->linux_stats.rx_errors++; |
| if (rx_status & MACE_RCVFS_OFLO) { |
| lp->mace_stats.oflo++; |
| } |
| if (rx_status & MACE_RCVFS_CLSN) { |
| lp->mace_stats.clsn++; |
| } |
| if (rx_status & MACE_RCVFS_FRAM) { |
| lp->mace_stats.fram++; |
| } |
| if (rx_status & MACE_RCVFS_FCS) { |
| lp->mace_stats.fcs++; |
| } |
| } else { |
| short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4; |
| /* Auto Strip is off, always subtract 4 */ |
| struct sk_buff *skb; |
| |
| lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV); |
| /* runt packet count */ |
| lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV); |
| /* rcv collision count */ |
| |
| DEBUG(3, " receiving packet size 0x%X rx_status" |
| " 0x%X.\n", pkt_len, rx_status); |
| |
| skb = dev_alloc_skb(pkt_len+2); |
| |
| if (skb != NULL) { |
| skb_reserve(skb, 2); |
| insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1); |
| if (pkt_len & 1) |
| *(skb_tail_pointer(skb) - 1) = inb(ioaddr + AM2150_RCV); |
| skb->protocol = eth_type_trans(skb, dev); |
| |
| netif_rx(skb); /* Send the packet to the upper (protocol) layers. */ |
| |
| dev->last_rx = jiffies; |
| lp->linux_stats.rx_packets++; |
| lp->linux_stats.rx_bytes += pkt_len; |
| outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */ |
| continue; |
| } else { |
| DEBUG(1, "%s: couldn't allocate a sk_buff of size" |
| " %d.\n", dev->name, pkt_len); |
| lp->linux_stats.rx_dropped++; |
| } |
| } |
| outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */ |
| } /* while */ |
| |
| return 0; |
| } /* mace_rx */ |
| |
| /* ---------------------------------------------------------------------------- |
| pr_linux_stats |
| ---------------------------------------------------------------------------- */ |
| static void pr_linux_stats(struct net_device_stats *pstats) |
| { |
| DEBUG(2, "pr_linux_stats\n"); |
| DEBUG(2, " rx_packets=%-7ld tx_packets=%ld\n", |
| (long)pstats->rx_packets, (long)pstats->tx_packets); |
| DEBUG(2, " rx_errors=%-7ld tx_errors=%ld\n", |
| (long)pstats->rx_errors, (long)pstats->tx_errors); |
| DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ld\n", |
| (long)pstats->rx_dropped, (long)pstats->tx_dropped); |
| DEBUG(2, " multicast=%-7ld collisions=%ld\n", |
| (long)pstats->multicast, (long)pstats->collisions); |
| |
| DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ld\n", |
| (long)pstats->rx_length_errors, (long)pstats->rx_over_errors); |
| DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ld\n", |
| (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors); |
| DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ld\n", |
| (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors); |
| |
| DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n", |
| (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors); |
| DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n", |
| (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors); |
| DEBUG(2, " tx_window_errors=%ld\n", |
| (long)pstats->tx_window_errors); |
| } /* pr_linux_stats */ |
| |
| /* ---------------------------------------------------------------------------- |
| pr_mace_stats |
| ---------------------------------------------------------------------------- */ |
| static void pr_mace_stats(mace_statistics *pstats) |
| { |
| DEBUG(2, "pr_mace_stats\n"); |
| |
| DEBUG(2, " xmtsv=%-7d uflo=%d\n", |
| pstats->xmtsv, pstats->uflo); |
| DEBUG(2, " lcol=%-7d more=%d\n", |
| pstats->lcol, pstats->more); |
| DEBUG(2, " one=%-7d defer=%d\n", |
| pstats->one, pstats->defer); |
| DEBUG(2, " lcar=%-7d rtry=%d\n", |
| pstats->lcar, pstats->rtry); |
| |
| /* MACE_XMTRC */ |
| DEBUG(2, " exdef=%-7d xmtrc=%d\n", |
| pstats->exdef, pstats->xmtrc); |
| |
| /* RFS1--Receive Status (RCVSTS) */ |
| DEBUG(2, " oflo=%-7d clsn=%d\n", |
| pstats->oflo, pstats->clsn); |
| DEBUG(2, " fram=%-7d fcs=%d\n", |
| pstats->fram, pstats->fcs); |
| |
| /* RFS2--Runt Packet Count (RNTPC) */ |
| /* RFS3--Receive Collision Count (RCVCC) */ |
| DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%d\n", |
| pstats->rfs_rntpc, pstats->rfs_rcvcc); |
| |
| /* MACE_IR */ |
| DEBUG(2, " jab=%-7d babl=%d\n", |
| pstats->jab, pstats->babl); |
| DEBUG(2, " cerr=%-7d rcvcco=%d\n", |
| pstats->cerr, pstats->rcvcco); |
| DEBUG(2, " rntpco=%-7d mpco=%d\n", |
| pstats->rntpco, pstats->mpco); |
| |
| /* MACE_MPC */ |
| DEBUG(2, " mpc=%d\n", pstats->mpc); |
| |
| /* MACE_RNTPC */ |
| DEBUG(2, " rntpc=%d\n", pstats->rntpc); |
| |
| /* MACE_RCVCC */ |
| DEBUG(2, " rcvcc=%d\n", pstats->rcvcc); |
| |
| } /* pr_mace_stats */ |
| |
| /* ---------------------------------------------------------------------------- |
| update_stats |
| Update statistics. We change to register window 1, so this |
| should be run single-threaded if the device is active. This is |
| expected to be a rare operation, and it's simpler for the rest |
| of the driver to assume that window 0 is always valid rather |
| than use a special window-state variable. |
| |
| oflo & uflo should _never_ occur since it would mean the Xilinx |
| was not able to transfer data between the MACE FIFO and the |
| card's SRAM fast enough. If this happens, something is |
| seriously wrong with the hardware. |
| ---------------------------------------------------------------------------- */ |
| static void update_stats(unsigned int ioaddr, struct net_device *dev) |
| { |
| mace_private *lp = netdev_priv(dev); |
| |
| lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC); |
| lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC); |
| lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC); |
| /* At this point, mace_stats is fully updated for this call. |
| We may now update the linux_stats. */ |
| |
| /* The MACE has no equivalent for linux_stats field which are commented |
| out. */ |
| |
| /* lp->linux_stats.multicast; */ |
| lp->linux_stats.collisions = |
| lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc; |
| /* Collision: The MACE may retry sending a packet 15 times |
| before giving up. The retry count is in XMTRC. |
| Does each retry constitute a collision? |
| If so, why doesn't the RCVCC record these collisions? */ |
| |
| /* detailed rx_errors: */ |
| lp->linux_stats.rx_length_errors = |
| lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc; |
| /* lp->linux_stats.rx_over_errors */ |
| lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs; |
| lp->linux_stats.rx_frame_errors = lp->mace_stats.fram; |
| lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo; |
| lp->linux_stats.rx_missed_errors = |
| lp->mace_stats.mpco * 256 + lp->mace_stats.mpc; |
| |
| /* detailed tx_errors */ |
| lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry; |
| lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar; |
| /* LCAR usually results from bad cabling. */ |
| lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo; |
| lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr; |
| /* lp->linux_stats.tx_window_errors; */ |
| |
| return; |
| } /* update_stats */ |
| |
| /* ---------------------------------------------------------------------------- |
| mace_get_stats |
| Gathers ethernet statistics from the MACE chip. |
| ---------------------------------------------------------------------------- */ |
| static struct net_device_stats *mace_get_stats(struct net_device *dev) |
| { |
| mace_private *lp = netdev_priv(dev); |
| |
| update_stats(dev->base_addr, dev); |
| |
| DEBUG(1, "%s: updating the statistics.\n", dev->name); |
| pr_linux_stats(&lp->linux_stats); |
| pr_mace_stats(&lp->mace_stats); |
| |
| return &lp->linux_stats; |
| } /* net_device_stats */ |
| |
| /* ---------------------------------------------------------------------------- |
| updateCRC |
| Modified from Am79C90 data sheet. |
| ---------------------------------------------------------------------------- */ |
| |
| #ifdef BROKEN_MULTICAST |
| |
| static void updateCRC(int *CRC, int bit) |
| { |
| int poly[]={ |
| 1,1,1,0, 1,1,0,1, |
| 1,0,1,1, 1,0,0,0, |
| 1,0,0,0, 0,0,1,1, |
| 0,0,1,0, 0,0,0,0 |
| }; /* CRC polynomial. poly[n] = coefficient of the x**n term of the |
| CRC generator polynomial. */ |
| |
| int j; |
| |
| /* shift CRC and control bit (CRC[32]) */ |
| for (j = 32; j > 0; j--) |
| CRC[j] = CRC[j-1]; |
| CRC[0] = 0; |
| |
| /* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */ |
| if (bit ^ CRC[32]) |
| for (j = 0; j < 32; j++) |
| CRC[j] ^= poly[j]; |
| } /* updateCRC */ |
| |
| /* ---------------------------------------------------------------------------- |
| BuildLAF |
| Build logical address filter. |
| Modified from Am79C90 data sheet. |
| |
| Input |
| ladrf: logical address filter (contents initialized to 0) |
| adr: ethernet address |
| ---------------------------------------------------------------------------- */ |
| static void BuildLAF(int *ladrf, int *adr) |
| { |
| int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */ |
| |
| int i, byte; /* temporary array indices */ |
| int hashcode; /* the output object */ |
| |
| CRC[32]=0; |
| |
| for (byte = 0; byte < 6; byte++) |
| for (i = 0; i < 8; i++) |
| updateCRC(CRC, (adr[byte] >> i) & 1); |
| |
| hashcode = 0; |
| for (i = 0; i < 6; i++) |
| hashcode = (hashcode << 1) + CRC[i]; |
| |
| byte = hashcode >> 3; |
| ladrf[byte] |= (1 << (hashcode & 7)); |
| |
| #ifdef PCMCIA_DEBUG |
| if (pc_debug > 2) { |
| printk(KERN_DEBUG " adr ="); |
| for (i = 0; i < 6; i++) |
| printk(" %02X", adr[i]); |
| printk("\n" KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63]" |
| " =", hashcode); |
| for (i = 0; i < 8; i++) |
| printk(" %02X", ladrf[i]); |
| printk("\n"); |
| } |
| #endif |
| } /* BuildLAF */ |
| |
| /* ---------------------------------------------------------------------------- |
| restore_multicast_list |
| Restores the multicast filter for MACE chip to the last |
| set_multicast_list() call. |
| |
| Input |
| multicast_num_addrs |
| multicast_ladrf[] |
| ---------------------------------------------------------------------------- */ |
| static void restore_multicast_list(struct net_device *dev) |
| { |
| mace_private *lp = netdev_priv(dev); |
| int num_addrs = lp->multicast_num_addrs; |
| int *ladrf = lp->multicast_ladrf; |
| unsigned int ioaddr = dev->base_addr; |
| int i; |
| |
| DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", |
| dev->name, num_addrs); |
| |
| if (num_addrs > 0) { |
| |
| DEBUG(1, "Attempt to restore multicast list detected.\n"); |
| |
| mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR); |
| /* Poll ADDRCHG bit */ |
| while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG) |
| ; |
| /* Set LADRF register */ |
| for (i = 0; i < MACE_LADRF_LEN; i++) |
| mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]); |
| |
| mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL); |
| mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); |
| |
| } else if (num_addrs < 0) { |
| |
| /* Promiscuous mode: receive all packets */ |
| mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); |
| mace_write(lp, ioaddr, MACE_MACCC, |
| MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV |
| ); |
| |
| } else { |
| |
| /* Normal mode */ |
| mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); |
| mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); |
| |
| } |
| } /* restore_multicast_list */ |
| |
| /* ---------------------------------------------------------------------------- |
| set_multicast_list |
| Set or clear the multicast filter for this adaptor. |
| |
| Input |
| num_addrs == -1 Promiscuous mode, receive all packets |
| num_addrs == 0 Normal mode, clear multicast list |
| num_addrs > 0 Multicast mode, receive normal and MC packets, and do |
| best-effort filtering. |
| Output |
| multicast_num_addrs |
| multicast_ladrf[] |
| ---------------------------------------------------------------------------- */ |
| |
| static void set_multicast_list(struct net_device *dev) |
| { |
| mace_private *lp = netdev_priv(dev); |
| int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */ |
| int i; |
| struct dev_mc_list *dmi = dev->mc_list; |
| |
| #ifdef PCMCIA_DEBUG |
| if (pc_debug > 1) { |
| static int old; |
| if (dev->mc_count != old) { |
| old = dev->mc_count; |
| DEBUG(0, "%s: setting Rx mode to %d addresses.\n", |
| dev->name, old); |
| } |
| } |
| #endif |
| |
| /* Set multicast_num_addrs. */ |
| lp->multicast_num_addrs = dev->mc_count; |
| |
| /* Set multicast_ladrf. */ |
| if (num_addrs > 0) { |
| /* Calculate multicast logical address filter */ |
| memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN); |
| for (i = 0; i < dev->mc_count; i++) { |
| memcpy(adr, dmi->dmi_addr, ETHER_ADDR_LEN); |
| dmi = dmi->next; |
| BuildLAF(lp->multicast_ladrf, adr); |
| } |
| } |
| |
| restore_multicast_list(dev); |
| |
| } /* set_multicast_list */ |
| |
| #endif /* BROKEN_MULTICAST */ |
| |
| static void restore_multicast_list(struct net_device *dev) |
| { |
| unsigned int ioaddr = dev->base_addr; |
| mace_private *lp = netdev_priv(dev); |
| |
| DEBUG(2, "%s: restoring Rx mode to %d addresses.\n", dev->name, |
| lp->multicast_num_addrs); |
| |
| if (dev->flags & IFF_PROMISC) { |
| /* Promiscuous mode: receive all packets */ |
| mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); |
| mace_write(lp, ioaddr, MACE_MACCC, |
| MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV |
| ); |
| } else { |
| /* Normal mode */ |
| mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL); |
| mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); |
| } |
| } /* restore_multicast_list */ |
| |
| static void set_multicast_list(struct net_device *dev) |
| { |
| mace_private *lp = netdev_priv(dev); |
| |
| #ifdef PCMCIA_DEBUG |
| if (pc_debug > 1) { |
| static int old; |
| if (dev->mc_count != old) { |
| old = dev->mc_count; |
| DEBUG(0, "%s: setting Rx mode to %d addresses.\n", |
| dev->name, old); |
| } |
| } |
| #endif |
| |
| lp->multicast_num_addrs = dev->mc_count; |
| restore_multicast_list(dev); |
| |
| } /* set_multicast_list */ |
| |
| static struct pcmcia_device_id nmclan_ids[] = { |
| PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941), |
| PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf), |
| PCMCIA_DEVICE_NULL, |
| }; |
| MODULE_DEVICE_TABLE(pcmcia, nmclan_ids); |
| |
| static struct pcmcia_driver nmclan_cs_driver = { |
| .owner = THIS_MODULE, |
| .drv = { |
| .name = "nmclan_cs", |
| }, |
| .probe = nmclan_probe, |
| .remove = nmclan_detach, |
| .id_table = nmclan_ids, |
| .suspend = nmclan_suspend, |
| .resume = nmclan_resume, |
| }; |
| |
| static int __init init_nmclan_cs(void) |
| { |
| return pcmcia_register_driver(&nmclan_cs_driver); |
| } |
| |
| static void __exit exit_nmclan_cs(void) |
| { |
| pcmcia_unregister_driver(&nmclan_cs_driver); |
| } |
| |
| module_init(init_nmclan_cs); |
| module_exit(exit_nmclan_cs); |