nmclan_cs.c
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- /* ----------------------------------------------------------------------------
- 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
- 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
- * 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/sched.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 <asm/uaccess.h>
- #include <asm/io.h>
- #include <asm/system.h>
- #include <asm/bitops.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/skbuff.h>
- #include <linux/if_arp.h>
- #include <linux/ioport.h>
- #include <pcmcia/version.h>
- #include <pcmcia/cs_types.h>
- #include <pcmcia/cs.h>
- #include <pcmcia/cisreg.h>
- #include <pcmcia/cistpl.h>
- #include <pcmcia/ds.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 {
- dev_link_t link;
- struct net_device 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 */
- } 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 dev_info_t dev_info="nmclan_cs";
- static dev_link_t *dev_list;
- static 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_PARM(n, "i")
- static int irq_list[4] = { -1 };
- MODULE_PARM(irq_list, "1-4i");
- /* 0=auto, 1=10baseT, 2 = 10base2, default=auto */
- INT_MODULE_PARM(if_port, 0);
- /* Bit map of interrupts to choose from */
- INT_MODULE_PARM(irq_mask, 0xdeb8);
- #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 void nmclan_config(dev_link_t *link);
- static void nmclan_release(u_long arg);
- static int nmclan_event(event_t event, int priority,
- event_callback_args_t *args);
- 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 void mace_interrupt(int irq, void *dev_id, struct pt_regs *regs);
- 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 int mace_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
- static dev_link_t *nmclan_attach(void);
- static void nmclan_detach(dev_link_t *);
- /* ----------------------------------------------------------------------------
- flush_stale_links
- Clean up stale device structures
- ---------------------------------------------------------------------------- */
- static void flush_stale_links(void)
- {
- dev_link_t *link, *next;
- for (link = dev_list; link; link = next) {
- next = link->next;
- if (link->state & DEV_STALE_LINK)
- nmclan_detach(link);
- }
- }
- /* ----------------------------------------------------------------------------
- cs_error
- Report a Card Services related error.
- ---------------------------------------------------------------------------- */
- static void cs_error(client_handle_t handle, int func, int ret)
- {
- error_info_t err = { func, ret };
- CardServices(ReportError, handle, &err);
- }
- /* ----------------------------------------------------------------------------
- nmclan_attach
- Creates an "instance" of the driver, allocating local data
- structures for one device. The device is registered with Card
- Services.
- ---------------------------------------------------------------------------- */
- static dev_link_t *nmclan_attach(void)
- {
- mace_private *lp;
- dev_link_t *link;
- struct net_device *dev;
- client_reg_t client_reg;
- int i, ret;
- DEBUG(0, "nmclan_attach()n");
- DEBUG(1, "%sn", rcsid);
- flush_stale_links();
- /* Create new ethernet device */
- lp = kmalloc(sizeof(*lp), GFP_KERNEL);
- if (!lp) return NULL;
- memset(lp, 0, sizeof(*lp));
- link = &lp->link; dev = &lp->dev;
- link->priv = dev->priv = link->irq.Instance = lp;
- link->release.function = &nmclan_release;
- link->release.data = (u_long)link;
- 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_INFO2_VALID|IRQ_LEVEL_ID;
- if (irq_list[0] == -1)
- link->irq.IRQInfo2 = irq_mask;
- else
- for (i = 0; i < 4; i++)
- link->irq.IRQInfo2 |= 1 << irq_list[i];
- link->irq.Handler = &mace_interrupt;
- link->conf.Attributes = CONF_ENABLE_IRQ;
- link->conf.Vcc = 50;
- 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;
- dev->do_ioctl = &mace_ioctl;
- ether_setup(dev);
- dev->open = &mace_open;
- dev->stop = &mace_close;
- #ifdef HAVE_TX_TIMEOUT
- dev->tx_timeout = mace_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
- #endif
- /* Register with Card Services */
- link->next = dev_list;
- dev_list = link;
- client_reg.dev_info = &dev_info;
- client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
- client_reg.EventMask =
- CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
- CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
- CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
- client_reg.event_handler = &nmclan_event;
- client_reg.Version = 0x0210;
- client_reg.event_callback_args.client_data = link;
- ret = CardServices(RegisterClient, &link->handle, &client_reg);
- if (ret != 0) {
- cs_error(link->handle, RegisterClient, ret);
- nmclan_detach(link);
- return NULL;
- }
- return 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(dev_link_t *link)
- {
- mace_private *lp = link->priv;
- dev_link_t **linkp;
- DEBUG(0, "nmclan_detach(0x%p)n", link);
- /* Locate device structure */
- for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
- if (*linkp == link) break;
- if (*linkp == NULL)
- return;
- del_timer(&link->release);
- if (link->state & DEV_CONFIG) {
- nmclan_release((u_long)link);
- if (link->state & DEV_STALE_CONFIG) {
- link->state |= DEV_STALE_LINK;
- return;
- }
- }
- if (link->handle)
- CardServices(DeregisterClient, link->handle);
- /* Unlink device structure, free bits */
- *linkp = link->next;
- if (link->dev)
- unregister_netdev(&lp->dev);
- kfree(lp);
- } /* 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(ioaddr_t 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 */
- save_flags(flags);
- cli();
- MACEBANK(1);
- data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
- MACEBANK(0);
- restore_flags(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(ioaddr_t 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 */
- save_flags(flags);
- cli();
- MACEBANK(1);
- outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
- MACEBANK(0);
- restore_flags(flags);
- break;
- }
- } /* mace_write */
- /* ----------------------------------------------------------------------------
- mace_init
- Resets the MACE chip.
- ---------------------------------------------------------------------------- */
- static void mace_init(ioaddr_t ioaddr, char *enet_addr)
- {
- int i;
- /* MACE Software reset */
- mace_write(ioaddr, MACE_BIUCC, 1);
- while (mace_read(ioaddr, MACE_BIUCC) & 0x01) {
- /* Wait for reset bit to be cleared automatically after <= 200ns */;
- }
- mace_write(ioaddr, MACE_BIUCC, 0);
- /* The Am2150 requires that the MACE FIFOs operate in burst mode. */
- mace_write(ioaddr, MACE_FIFOCC, 0x0F);
- mace_write(ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */
- mace_write(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(ioaddr, MACE_PLSCC, 0x02);
- break;
- case 2:
- mace_write(ioaddr, MACE_PLSCC, 0x00);
- break;
- default:
- mace_write(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(ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR);
- /* Poll ADDRCHG bit */
- while (mace_read(ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
- ;
- /* Set PADR register */
- for (i = 0; i < ETHER_ADDR_LEN; i++)
- mace_write(ioaddr, MACE_PADR, enet_addr[i]);
- /* MAC Configuration Control Register should be written last */
- /* Let set_multicast_list set this. */
- /* mace_write(ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */
- mace_write(ioaddr, MACE_MACCC, 0x00);
- } /* 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, args...)
- while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed
- static void nmclan_config(dev_link_t *link)
- {
- client_handle_t handle = link->handle;
- mace_private *lp = link->priv;
- struct net_device *dev = &lp->dev;
- tuple_t tuple;
- cisparse_t parse;
- u_char buf[64];
- int i, last_ret, last_fn;
- ioaddr_t ioaddr;
- DEBUG(0, "nmclan_config(0x%p)n", link);
- tuple.Attributes = 0;
- tuple.TupleData = buf;
- tuple.TupleDataMax = 64;
- tuple.TupleOffset = 0;
- tuple.DesiredTuple = CISTPL_CONFIG;
- CS_CHECK(GetFirstTuple, handle, &tuple);
- CS_CHECK(GetTupleData, handle, &tuple);
- CS_CHECK(ParseTuple, handle, &tuple, &parse);
- link->conf.ConfigBase = parse.config.base;
- /* Configure card */
- link->state |= DEV_CONFIG;
- CS_CHECK(RequestIO, handle, &link->io);
- CS_CHECK(RequestIRQ, handle, &link->irq);
- CS_CHECK(RequestConfiguration, handle, &link->conf);
- dev->irq = link->irq.AssignedIRQ;
- dev->base_addr = link->io.BasePort1;
- i = register_netdev(dev);
- if (i != 0) {
- printk(KERN_NOTICE "nmclan_cs: register_netdev() failedn");
- goto failed;
- }
- 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;
- CS_CHECK(GetFirstTuple, handle, &tuple);
- CS_CHECK(GetTupleData, handle, &tuple);
- memcpy(dev->dev_addr, tuple.TupleData, ETHER_ADDR_LEN);
- /* Verify configuration by reading the MACE ID. */
- {
- char sig[2];
- sig[0] = mace_read(ioaddr, MACE_CHIPIDL);
- sig[1] = mace_read(ioaddr, MACE_CHIPIDH);
- if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) {
- DEBUG(0, "nmclan_cs configured: mace id=%x %xn",
- sig[0], sig[1]);
- } else {
- printk(KERN_NOTICE "nmclan_cs: mace id not found: %x %x should"
- " be 0x40 0x?9n", sig[0], sig[1]);
- link->state &= ~DEV_CONFIG_PENDING;
- return;
- }
- }
- mace_init(ioaddr, dev->dev_addr);
- /* 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 requestedn");
- strcpy(lp->node.dev_name, dev->name);
- link->dev = &lp->node;
- link->state &= ~DEV_CONFIG_PENDING;
- printk(KERN_INFO "%s: nmclan: port %#3lx, irq %d, %s port, hw_addr ",
- dev->name, dev->base_addr, dev->irq, if_names[dev->if_port]);
- for (i = 0; i < 6; i++)
- printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "n"));
- return;
- cs_failed:
- cs_error(link->handle, last_fn, last_ret);
- failed:
- nmclan_release((u_long)link);
- return;
- } /* 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(u_long arg)
- {
- dev_link_t *link = (dev_link_t *)arg;
- DEBUG(0, "nmclan_release(0x%p)n", link);
- if (link->open) {
- DEBUG(1, "nmclan_cs: release postponed, '%s' "
- "still openn", link->dev->dev_name);
- link->state |= DEV_STALE_CONFIG;
- return;
- }
- CardServices(ReleaseConfiguration, link->handle);
- CardServices(ReleaseIO, link->handle, &link->io);
- CardServices(ReleaseIRQ, link->handle, &link->irq);
- link->state &= ~DEV_CONFIG;
- } /* nmclan_release */
- /* ----------------------------------------------------------------------------
- nmclan_event
- The card status event handler. Mostly, this schedules other
- stuff to run after an event is received. A CARD_REMOVAL event
- also sets some flags to discourage the net drivers from trying
- to talk to the card any more.
- ---------------------------------------------------------------------------- */
- static int nmclan_event(event_t event, int priority,
- event_callback_args_t *args)
- {
- dev_link_t *link = args->client_data;
- mace_private *lp = link->priv;
- struct net_device *dev = &lp->dev;
- DEBUG(1, "nmclan_event(0x%06x)n", event);
- switch (event) {
- case CS_EVENT_CARD_REMOVAL:
- link->state &= ~DEV_PRESENT;
- if (link->state & DEV_CONFIG) {
- netif_device_detach(dev);
- mod_timer(&link->release, jiffies + HZ/20);
- }
- break;
- case CS_EVENT_CARD_INSERTION:
- link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
- nmclan_config(link);
- break;
- case CS_EVENT_PM_SUSPEND:
- link->state |= DEV_SUSPEND;
- /* Fall through... */
- case CS_EVENT_RESET_PHYSICAL:
- if (link->state & DEV_CONFIG) {
- if (link->open)
- netif_device_detach(dev);
- CardServices(ReleaseConfiguration, link->handle);
- }
- break;
- case CS_EVENT_PM_RESUME:
- link->state &= ~DEV_SUSPEND;
- /* Fall through... */
- case CS_EVENT_CARD_RESET:
- if (link->state & DEV_CONFIG) {
- CardServices(RequestConfiguration, link->handle, &link->conf);
- if (link->open) {
- nmclan_reset(dev);
- netif_device_attach(dev);
- }
- }
- break;
- case CS_EVENT_RESET_REQUEST:
- return 1;
- break;
- }
- return 0;
- } /* nmclan_event */
- /* ----------------------------------------------------------------------------
- nmclan_reset
- Reset and restore all of the Xilinx and MACE registers.
- ---------------------------------------------------------------------------- */
- static void nmclan_reset(struct net_device *dev)
- {
- mace_private *lp = dev->priv;
- #if RESET_XILINX
- dev_link_t *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;
- CardServices(AccessConfigurationRegister, link->handle, ®);
- 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;
- CardServices(AccessConfigurationRegister, link->handle, ®);
- /* 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);
- CardServices(AccessConfigurationRegister, link->handle, ®);
- /* 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(dev->base_addr, dev->dev_addr);
- mace_write(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 portn", 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)
- {
- ioaddr_t ioaddr = dev->base_addr;
- mace_private *lp = dev->priv;
- dev_link_t *link = &lp->link;
- if (!DEV_OK(link))
- return -ENODEV;
- link->open++;
- MOD_INC_USE_COUNT;
- 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)
- {
- ioaddr_t ioaddr = dev->base_addr;
- mace_private *lp = dev->priv;
- dev_link_t *link = &lp->link;
- 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);
- if (link->state & DEV_STALE_CONFIG)
- mod_timer(&link->release, jiffies + HZ/20);
- MOD_DEC_USE_COUNT;
- return 0;
- } /* mace_close */
- static int netdev_ethtool_ioctl (struct net_device *dev, void *useraddr)
- {
- u32 ethcmd;
- /* dev_ioctl() in ../../net/core/dev.c has already checked
- capable(CAP_NET_ADMIN), so don't bother with that here. */
- if (get_user(ethcmd, (u32 *)useraddr))
- return -EFAULT;
- switch (ethcmd) {
- case ETHTOOL_GDRVINFO: {
- struct ethtool_drvinfo info = { ETHTOOL_GDRVINFO };
- strcpy (info.driver, DRV_NAME);
- strcpy (info.version, DRV_VERSION);
- sprintf(info.bus_info, "PCMCIA 0x%lx", dev->base_addr);
- if (copy_to_user (useraddr, &info, sizeof (info)))
- return -EFAULT;
- return 0;
- }
- #ifdef PCMCIA_DEBUG
- /* get message-level */
- case ETHTOOL_GMSGLVL: {
- struct ethtool_value edata = {ETHTOOL_GMSGLVL};
- edata.data = pc_debug;
- if (copy_to_user(useraddr, &edata, sizeof(edata)))
- return -EFAULT;
- return 0;
- }
- /* set message-level */
- case ETHTOOL_SMSGLVL: {
- struct ethtool_value edata;
- if (copy_from_user(&edata, useraddr, sizeof(edata)))
- return -EFAULT;
- pc_debug = edata.data;
- return 0;
- }
- #endif
- default:
- break;
- }
- return -EOPNOTSUPP;
- }
- static int mace_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
- {
- switch (cmd) {
- case SIOCETHTOOL:
- return netdev_ethtool_ioctl(dev, (void *) rq->ifr_data);
- default:
- return -EOPNOTSUPP;
- }
- return 0;
- }
- /* ----------------------------------------------------------------------------
- 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 = (mace_private *)dev->priv;
- dev_link_t *link = &lp->link;
- printk(KERN_NOTICE "%s: transmit timed out -- ", dev->name);
- #if RESET_ON_TIMEOUT
- printk("resetting cardn");
- CardServices(ResetCard, link->handle);
- #else /* #if RESET_ON_TIMEOUT */
- printk("NOT resetting cardn");
- #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 = (mace_private *)dev->priv;
- ioaddr_t 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 void mace_interrupt(int irq, void *dev_id, struct pt_regs *regs)
- {
- mace_private *lp = (mace_private *)dev_id;
- struct net_device *dev = &lp->dev;
- ioaddr_t ioaddr = dev->base_addr;
- int status;
- int IntrCnt = MACE_MAX_IR_ITERATIONS;
- if (dev == NULL) {
- DEBUG(2, "mace_interrupt(): irq 0x%X for unknown device.n",
- irq);
- return;
- }
- 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;
- }
- if (!netif_device_present(dev)) {
- DEBUG(2, "%s: interrupt from dead cardn", dev->name);
- goto exception;
- }
- 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));
- exception:
- return;
- } /* mace_interrupt */
- /* ----------------------------------------------------------------------------
- mace_rx
- Receives packets.
- ---------------------------------------------------------------------------- */
- static int mace_rx(struct net_device *dev, unsigned char RxCnt)
- {
- mace_private *lp = (mace_private *)dev->priv;
- ioaddr_t 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->dev = dev;
- skb_reserve(skb, 2);
- insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
- if (pkt_len & 1)
- *(skb->tail-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 += skb->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_statsn");
- DEBUG(2, " rx_packets=%-7ld tx_packets=%ldn",
- (long)pstats->rx_packets, (long)pstats->tx_packets);
- DEBUG(2, " rx_errors=%-7ld tx_errors=%ldn",
- (long)pstats->rx_errors, (long)pstats->tx_errors);
- DEBUG(2, " rx_dropped=%-7ld tx_dropped=%ldn",
- (long)pstats->rx_dropped, (long)pstats->tx_dropped);
- DEBUG(2, " multicast=%-7ld collisions=%ldn",
- (long)pstats->multicast, (long)pstats->collisions);
- DEBUG(2, " rx_length_errors=%-7ld rx_over_errors=%ldn",
- (long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
- DEBUG(2, " rx_crc_errors=%-7ld rx_frame_errors=%ldn",
- (long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
- DEBUG(2, " rx_fifo_errors=%-7ld rx_missed_errors=%ldn",
- (long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
- DEBUG(2, " tx_aborted_errors=%-7ld tx_carrier_errors=%ldn",
- (long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
- DEBUG(2, " tx_fifo_errors=%-7ld tx_heartbeat_errors=%ldn",
- (long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
- DEBUG(2, " tx_window_errors=%ldn",
- (long)pstats->tx_window_errors);
- } /* pr_linux_stats */
- /* ----------------------------------------------------------------------------
- pr_mace_stats
- ---------------------------------------------------------------------------- */
- static void pr_mace_stats(mace_statistics *pstats)
- {
- DEBUG(2, "pr_mace_statsn");
- DEBUG(2, " xmtsv=%-7d uflo=%dn",
- pstats->xmtsv, pstats->uflo);
- DEBUG(2, " lcol=%-7d more=%dn",
- pstats->lcol, pstats->more);
- DEBUG(2, " one=%-7d defer=%dn",
- pstats->one, pstats->defer);
- DEBUG(2, " lcar=%-7d rtry=%dn",
- pstats->lcar, pstats->rtry);
- /* MACE_XMTRC */
- DEBUG(2, " exdef=%-7d xmtrc=%dn",
- pstats->exdef, pstats->xmtrc);
- /* RFS1--Receive Status (RCVSTS) */
- DEBUG(2, " oflo=%-7d clsn=%dn",
- pstats->oflo, pstats->clsn);
- DEBUG(2, " fram=%-7d fcs=%dn",
- pstats->fram, pstats->fcs);
- /* RFS2--Runt Packet Count (RNTPC) */
- /* RFS3--Receive Collision Count (RCVCC) */
- DEBUG(2, " rfs_rntpc=%-7d rfs_rcvcc=%dn",
- pstats->rfs_rntpc, pstats->rfs_rcvcc);
- /* MACE_IR */
- DEBUG(2, " jab=%-7d babl=%dn",
- pstats->jab, pstats->babl);
- DEBUG(2, " cerr=%-7d rcvcco=%dn",
- pstats->cerr, pstats->rcvcco);
- DEBUG(2, " rntpco=%-7d mpco=%dn",
- pstats->rntpco, pstats->mpco);
- /* MACE_MPC */
- DEBUG(2, " mpc=%dn", pstats->mpc);
- /* MACE_RNTPC */
- DEBUG(2, " rntpc=%dn", pstats->rntpc);
- /* MACE_RCVCC */
- DEBUG(2, " rcvcc=%dn", 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(ioaddr_t ioaddr, struct net_device *dev)
- {
- mace_private *lp = (mace_private *)dev->priv;
- lp->mace_stats.rcvcc += mace_read(ioaddr, MACE_RCVCC);
- lp->mace_stats.rntpc += mace_read(ioaddr, MACE_RNTPC);
- lp->mace_stats.mpc += mace_read(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 = (mace_private *)dev->priv;
- 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.
- ---------------------------------------------------------------------------- */
- #if 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 = (mace_private *)dev->priv;
- int num_addrs = lp->multicast_num_addrs;
- int *ladrf = lp->multicast_ladrf;
- ioaddr_t 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(ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
- /* Poll ADDRCHG bit */
- while (mace_read(ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
- ;
- /* Set LADRF register */
- for (i = 0; i < MACE_LADRF_LEN; i++)
- mace_write(ioaddr, MACE_LADRF, ladrf[i]);
- mace_write(ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
- mace_write(ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
- } else if (num_addrs < 0) {
- /* Promiscuous mode: receive all packets */
- mace_write(ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
- mace_write(ioaddr, MACE_MACCC,
- MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
- );
- } else {
- /* Normal mode */
- mace_write(ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
- mace_write(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 = (mace_private *)dev->priv;
- 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)
- {
- ioaddr_t ioaddr = dev->base_addr;
- DEBUG(2, "%s: restoring Rx mode to %d addresses.n", dev->name,
- ((mace_private *)(dev->priv))->multicast_num_addrs);
- if (dev->flags & IFF_PROMISC) {
- /* Promiscuous mode: receive all packets */
- mace_write(ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
- mace_write(ioaddr, MACE_MACCC,
- MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
- );
- } else {
- /* Normal mode */
- mace_write(ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
- mace_write(ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
- }
- } /* restore_multicast_list */
- static void set_multicast_list(struct net_device *dev)
- {
- mace_private *lp = (mace_private *)dev->priv;
- #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 */
- /* ----------------------------------------------------------------------------
- init_nmclan_cs
- ---------------------------------------------------------------------------- */
- static int __init init_nmclan_cs(void)
- {
- servinfo_t serv;
- DEBUG(0, "%sn", version);
- CardServices(GetCardServicesInfo, &serv);
- if (serv.Revision != CS_RELEASE_CODE) {
- printk(KERN_NOTICE "nmclan_cs: Card Services release does not match!n");
- return -1;
- }
- register_pccard_driver(&dev_info, &nmclan_attach, &nmclan_detach);
- return 0;
- }
- /* ----------------------------------------------------------------------------
- exit_nmclan_cs
- ---------------------------------------------------------------------------- */
- static void __exit exit_nmclan_cs(void)
- {
- DEBUG(0, "nmclan_cs: unloadingn");
- unregister_pccard_driver(&dev_info);
- while (dev_list != NULL)
- nmclan_detach(dev_list);
- }
- module_init(init_nmclan_cs);
- module_exit(exit_nmclan_cs);