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linux/drivers/net/pcmcia/xirc2ps_cs.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

1957 lines
58 KiB
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/* [xirc2ps_cs.c wk 03.11.99] (1.40 1999/11/18 00:06:03)
* Xircom CreditCard Ethernet Adapter IIps driver
* Xircom Realport 10/100 (RE-100) driver
*
* This driver supports various Xircom CreditCard Ethernet adapters
* including the CE2, CE IIps, RE-10, CEM28, CEM33, CE33, CEM56,
* CE3-100, CE3B, RE-100, REM10BT, and REM56G-100.
*
* 2000-09-24 <psheer@icon.co.za> The Xircom CE3B-100 may not
* autodetect the media properly. In this case use the
* if_port=1 (for 10BaseT) or if_port=4 (for 100BaseT) options
* to force the media type.
*
* Written originally by Werner Koch based on David Hinds' skeleton of the
* PCMCIA driver.
*
* Copyright (c) 1997,1998 Werner Koch (dd9jn)
*
* This driver is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* It is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
*
* ALTERNATIVELY, this driver may be distributed under the terms of
* the following license, in which case the provisions of this license
* are required INSTEAD OF the GNU General Public License. (This clause
* is necessary due to a potential bad interaction between the GPL and
* the restrictions contained in a BSD-style copyright.)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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/cistpl.h>
#include <pcmcia/cisreg.h>
#include <pcmcia/ciscode.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#ifndef MANFID_COMPAQ
#define MANFID_COMPAQ 0x0138
#define MANFID_COMPAQ2 0x0183 /* is this correct? */
#endif
#include <pcmcia/ds.h>
/* Time in jiffies before concluding Tx hung */
#define TX_TIMEOUT ((400*HZ)/1000)
/****************
* Some constants used to access the hardware
*/
/* Register offsets and value constans */
#define XIRCREG_CR 0 /* Command register (wr) */
enum xirc_cr {
TransmitPacket = 0x01,
SoftReset = 0x02,
EnableIntr = 0x04,
ForceIntr = 0x08,
ClearTxFIFO = 0x10,
ClearRxOvrun = 0x20,
RestartTx = 0x40
};
#define XIRCREG_ESR 0 /* Ethernet status register (rd) */
enum xirc_esr {
FullPktRcvd = 0x01, /* full packet in receive buffer */
PktRejected = 0x04, /* a packet has been rejected */
TxPktPend = 0x08, /* TX Packet Pending */
IncorPolarity = 0x10,
MediaSelect = 0x20 /* set if TP, clear if AUI */
};
#define XIRCREG_PR 1 /* Page Register select */
#define XIRCREG_EDP 4 /* Ethernet Data Port Register */
#define XIRCREG_ISR 6 /* Ethernet Interrupt Status Register */
enum xirc_isr {
TxBufOvr = 0x01, /* TX Buffer Overflow */
PktTxed = 0x02, /* Packet Transmitted */
MACIntr = 0x04, /* MAC Interrupt occurred */
TxResGrant = 0x08, /* Tx Reservation Granted */
RxFullPkt = 0x20, /* Rx Full Packet */
RxPktRej = 0x40, /* Rx Packet Rejected */
ForcedIntr= 0x80 /* Forced Interrupt */
};
#define XIRCREG1_IMR0 12 /* Ethernet Interrupt Mask Register (on page 1)*/
#define XIRCREG1_IMR1 13
#define XIRCREG0_TSO 8 /* Transmit Space Open Register (on page 0)*/
#define XIRCREG0_TRS 10 /* Transmit reservation Size Register (page 0)*/
#define XIRCREG0_DO 12 /* Data Offset Register (page 0) (wr) */
#define XIRCREG0_RSR 12 /* Receive Status Register (page 0) (rd) */
enum xirc_rsr {
PhyPkt = 0x01, /* set:physical packet, clear: multicast packet */
BrdcstPkt = 0x02, /* set if it is a broadcast packet */
PktTooLong = 0x04, /* set if packet length > 1518 */
AlignErr = 0x10, /* incorrect CRC and last octet not complete */
CRCErr = 0x20, /* incorrect CRC and last octet is complete */
PktRxOk = 0x80 /* received ok */
};
#define XIRCREG0_PTR 13 /* packets transmitted register (rd) */
#define XIRCREG0_RBC 14 /* receive byte count regsister (rd) */
#define XIRCREG1_ECR 14 /* ethernet configurationn register */
enum xirc_ecr {
FullDuplex = 0x04, /* enable full duplex mode */
LongTPMode = 0x08, /* adjust for longer lengths of TP cable */
DisablePolCor = 0x10,/* disable auto polarity correction */
DisableLinkPulse = 0x20, /* disable link pulse generation */
DisableAutoTx = 0x40, /* disable auto-transmit */
};
#define XIRCREG2_RBS 8 /* receive buffer start register */
#define XIRCREG2_LED 10 /* LED Configuration register */
/* values for the leds: Bits 2-0 for led 1
* 0 disabled Bits 5-3 for led 2
* 1 collision
* 2 noncollision
* 3 link_detected
* 4 incor_polarity
* 5 jabber
* 6 auto_assertion
* 7 rx_tx_activity
*/
#define XIRCREG2_MSR 12 /* Mohawk specific register */
#define XIRCREG4_GPR0 8 /* General Purpose Register 0 */
#define XIRCREG4_GPR1 9 /* General Purpose Register 1 */
#define XIRCREG2_GPR2 13 /* General Purpose Register 2 (page2!)*/
#define XIRCREG4_BOV 10 /* Bonding Version Register */
#define XIRCREG4_LMA 12 /* Local Memory Address Register */
#define XIRCREG4_LMD 14 /* Local Memory Data Port */
/* MAC register can only by accessed with 8 bit operations */
#define XIRCREG40_CMD0 8 /* Command Register (wr) */
enum xirc_cmd { /* Commands */
Transmit = 0x01,
EnableRecv = 0x04,
DisableRecv = 0x08,
Abort = 0x10,
Online = 0x20,
IntrAck = 0x40,
Offline = 0x80
};
#define XIRCREG5_RHSA0 10 /* Rx Host Start Address */
#define XIRCREG40_RXST0 9 /* Receive Status Register */
#define XIRCREG40_TXST0 11 /* Transmit Status Register 0 */
#define XIRCREG40_TXST1 12 /* Transmit Status Register 10 */
#define XIRCREG40_RMASK0 13 /* Receive Mask Register */
#define XIRCREG40_TMASK0 14 /* Transmit Mask Register 0 */
#define XIRCREG40_TMASK1 15 /* Transmit Mask Register 0 */
#define XIRCREG42_SWC0 8 /* Software Configuration 0 */
#define XIRCREG42_SWC1 9 /* Software Configuration 1 */
#define XIRCREG42_BOC 10 /* Back-Off Configuration */
#define XIRCREG44_TDR0 8 /* Time Domain Reflectometry 0 */
#define XIRCREG44_TDR1 9 /* Time Domain Reflectometry 1 */
#define XIRCREG44_RXBC_LO 10 /* Rx Byte Count 0 (rd) */
#define XIRCREG44_RXBC_HI 11 /* Rx Byte Count 1 (rd) */
#define XIRCREG45_REV 15 /* Revision Register (rd) */
#define XIRCREG50_IA 8 /* Individual Address (8-13) */
static const char *if_names[] = { "Auto", "10BaseT", "10Base2", "AUI", "100BaseT" };
/****************
* All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
* you do not define PCMCIA_DEBUG at all, all the debug code will be
* left out. If you compile with PCMCIA_DEBUG=0, the debug code will
* be present but disabled -- but it can then be enabled for specific
* modules at load time with a 'pc_debug=#' option to insmod.
*/
#ifdef PCMCIA_DEBUG
static int pc_debug = PCMCIA_DEBUG;
module_param(pc_debug, int, 0);
#define DEBUG(n, args...) if (pc_debug>(n)) printk(KDBG_XIRC args)
#else
#define DEBUG(n, args...)
#endif
#define KDBG_XIRC KERN_DEBUG "xirc2ps_cs: "
#define KERR_XIRC KERN_ERR "xirc2ps_cs: "
#define KWRN_XIRC KERN_WARNING "xirc2ps_cs: "
#define KNOT_XIRC KERN_NOTICE "xirc2ps_cs: "
#define KINF_XIRC KERN_INFO "xirc2ps_cs: "
/* card types */
#define XIR_UNKNOWN 0 /* unknown: not supported */
#define XIR_CE 1 /* (prodid 1) different hardware: not supported */
#define XIR_CE2 2 /* (prodid 2) */
#define XIR_CE3 3 /* (prodid 3) */
#define XIR_CEM 4 /* (prodid 1) different hardware: not supported */
#define XIR_CEM2 5 /* (prodid 2) */
#define XIR_CEM3 6 /* (prodid 3) */
#define XIR_CEM33 7 /* (prodid 4) */
#define XIR_CEM56M 8 /* (prodid 5) */
#define XIR_CEM56 9 /* (prodid 6) */
#define XIR_CM28 10 /* (prodid 3) modem only: not supported here */
#define XIR_CM33 11 /* (prodid 4) modem only: not supported here */
#define XIR_CM56 12 /* (prodid 5) modem only: not supported here */
#define XIR_CG 13 /* (prodid 1) GSM modem only: not supported */
#define XIR_CBE 14 /* (prodid 1) cardbus ethernet: not supported */
/*====================================================================*/
/* Module parameters */
MODULE_DESCRIPTION("Xircom PCMCIA ethernet driver");
MODULE_LICENSE("Dual MPL/GPL");
#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
INT_MODULE_PARM(if_port, 0);
INT_MODULE_PARM(full_duplex, 0);
INT_MODULE_PARM(do_sound, 1);
INT_MODULE_PARM(lockup_hack, 0); /* anti lockup hack */
/*====================================================================*/
/* We do not process more than these number of bytes during one
* interrupt. (Of course we receive complete packets, so this is not
* an exact value).
* Something between 2000..22000; first value gives best interrupt latency,
* the second enables the usage of the complete on-chip buffer. We use the
* high value as the initial value.
*/
static unsigned maxrx_bytes = 22000;
/* MII management prototypes */
static void mii_idle(kio_addr_t ioaddr);
static void mii_putbit(kio_addr_t ioaddr, unsigned data);
static int mii_getbit(kio_addr_t ioaddr);
static void mii_wbits(kio_addr_t ioaddr, unsigned data, int len);
static unsigned mii_rd(kio_addr_t ioaddr, u_char phyaddr, u_char phyreg);
static void mii_wr(kio_addr_t ioaddr, u_char phyaddr, u_char phyreg,
unsigned data, int len);
/*
* The event() function is this driver's Card Services event handler.
* It will be called by Card Services when an appropriate card status
* event is received. The config() and release() entry points are
* used to configure or release a socket, in response to card insertion
* and ejection events. They are invoked from the event handler.
*/
static int has_ce2_string(struct pcmcia_device * link);
static int xirc2ps_config(struct pcmcia_device * link);
static void xirc2ps_release(struct pcmcia_device * link);
/****************
* The attach() and detach() entry points are used to create and destroy
* "instances" of the driver, where each instance represents everything
* needed to manage one actual PCMCIA card.
*/
static void xirc2ps_detach(struct pcmcia_device *p_dev);
/****************
* You'll also need to prototype all the functions that will actually
* be used to talk to your device. See 'pcmem_cs' for a good example
* of a fully self-sufficient driver; the other drivers rely more or
* less on other parts of the kernel.
*/
static irqreturn_t xirc2ps_interrupt(int irq, void *dev_id);
/****************
* A linked list of "instances" of the device. Each actual
* PCMCIA card corresponds to one device instance, and is described
* by one struct pcmcia_device structure (defined in ds.h).
*
* You may not want to use a linked list for this -- for example, the
* memory card driver uses an array of struct pcmcia_device pointers, where minor
* device numbers are used to derive the corresponding array index.
*/
/****************
* A driver needs to provide a dev_node_t structure for each device
* on a card. In some cases, there is only one device per card (for
* example, ethernet cards, modems). In other cases, there may be
* many actual or logical devices (SCSI adapters, memory cards with
* multiple partitions). The dev_node_t structures need to be kept
* in a linked list starting at the 'dev' field of a struct pcmcia_device
* structure. We allocate them in the card's private data structure,
* because they generally can't be allocated dynamically.
*/
typedef struct local_info_t {
struct pcmcia_device *p_dev;
dev_node_t node;
struct net_device_stats stats;
int card_type;
int probe_port;
int silicon; /* silicon revision. 0=old CE2, 1=Scipper, 4=Mohawk */
int mohawk; /* a CE3 type card */
int dingo; /* a CEM56 type card */
int new_mii; /* has full 10baseT/100baseT MII */
int modem; /* is a multi function card (i.e with a modem) */
void __iomem *dingo_ccr; /* only used for CEM56 cards */
unsigned last_ptr_value; /* last packets transmitted value */
const char *manf_str;
struct work_struct tx_timeout_task;
} local_info_t;
/****************
* Some more prototypes
*/
static int do_start_xmit(struct sk_buff *skb, struct net_device *dev);
static void do_tx_timeout(struct net_device *dev);
static void xirc2ps_tx_timeout_task(void *data);
static struct net_device_stats *do_get_stats(struct net_device *dev);
static void set_addresses(struct net_device *dev);
static void set_multicast_list(struct net_device *dev);
static int set_card_type(struct pcmcia_device *link, const void *s);
static int do_config(struct net_device *dev, struct ifmap *map);
static int do_open(struct net_device *dev);
static int do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
static const struct ethtool_ops netdev_ethtool_ops;
static void hardreset(struct net_device *dev);
static void do_reset(struct net_device *dev, int full);
static int init_mii(struct net_device *dev);
static void do_powerdown(struct net_device *dev);
static int do_stop(struct net_device *dev);
/*=============== Helper functions =========================*/
static int
first_tuple(struct pcmcia_device *handle, tuple_t *tuple, cisparse_t *parse)
{
int err;
if ((err = pcmcia_get_first_tuple(handle, tuple)) == 0 &&
(err = pcmcia_get_tuple_data(handle, tuple)) == 0)
err = pcmcia_parse_tuple(handle, tuple, parse);
return err;
}
static int
next_tuple(struct pcmcia_device *handle, tuple_t *tuple, cisparse_t *parse)
{
int err;
if ((err = pcmcia_get_next_tuple(handle, tuple)) == 0 &&
(err = pcmcia_get_tuple_data(handle, tuple)) == 0)
err = pcmcia_parse_tuple(handle, tuple, parse);
return err;
}
#define SelectPage(pgnr) outb((pgnr), ioaddr + XIRCREG_PR)
#define GetByte(reg) ((unsigned)inb(ioaddr + (reg)))
#define GetWord(reg) ((unsigned)inw(ioaddr + (reg)))
#define PutByte(reg,value) outb((value), ioaddr+(reg))
#define PutWord(reg,value) outw((value), ioaddr+(reg))
/*====== Functions used for debugging =================================*/
#if defined(PCMCIA_DEBUG) && 0 /* reading regs may change system status */
static void
PrintRegisters(struct net_device *dev)
{
kio_addr_t ioaddr = dev->base_addr;
if (pc_debug > 1) {
int i, page;
printk(KDBG_XIRC "Register common: ");
for (i = 0; i < 8; i++)
printk(" %2.2x", GetByte(i));
printk("\n");
for (page = 0; page <= 8; page++) {
printk(KDBG_XIRC "Register page %2x: ", page);
SelectPage(page);
for (i = 8; i < 16; i++)
printk(" %2.2x", GetByte(i));
printk("\n");
}
for (page=0x40 ; page <= 0x5f; page++) {
if (page == 0x43 || (page >= 0x46 && page <= 0x4f)
|| (page >= 0x51 && page <=0x5e))
continue;
printk(KDBG_XIRC "Register page %2x: ", page);
SelectPage(page);
for (i = 8; i < 16; i++)
printk(" %2.2x", GetByte(i));
printk("\n");
}
}
}
#endif /* PCMCIA_DEBUG */
/*============== MII Management functions ===============*/
/****************
* Turn around for read
*/
static void
mii_idle(kio_addr_t ioaddr)
{
PutByte(XIRCREG2_GPR2, 0x04|0); /* drive MDCK low */
udelay(1);
PutByte(XIRCREG2_GPR2, 0x04|1); /* and drive MDCK high */
udelay(1);
}
/****************
* Write a bit to MDI/O
*/
static void
mii_putbit(kio_addr_t ioaddr, unsigned data)
{
#if 1
if (data) {
PutByte(XIRCREG2_GPR2, 0x0c|2|0); /* set MDIO */
udelay(1);
PutByte(XIRCREG2_GPR2, 0x0c|2|1); /* and drive MDCK high */
udelay(1);
} else {
PutByte(XIRCREG2_GPR2, 0x0c|0|0); /* clear MDIO */
udelay(1);
PutByte(XIRCREG2_GPR2, 0x0c|0|1); /* and drive MDCK high */
udelay(1);
}
#else
if (data) {
PutWord(XIRCREG2_GPR2-1, 0x0e0e);
udelay(1);
PutWord(XIRCREG2_GPR2-1, 0x0f0f);
udelay(1);
} else {
PutWord(XIRCREG2_GPR2-1, 0x0c0c);
udelay(1);
PutWord(XIRCREG2_GPR2-1, 0x0d0d);
udelay(1);
}
#endif
}
/****************
* Get a bit from MDI/O
*/
static int
mii_getbit(kio_addr_t ioaddr)
{
unsigned d;
PutByte(XIRCREG2_GPR2, 4|0); /* drive MDCK low */
udelay(1);
d = GetByte(XIRCREG2_GPR2); /* read MDIO */
PutByte(XIRCREG2_GPR2, 4|1); /* drive MDCK high again */
udelay(1);
return d & 0x20; /* read MDIO */
}
static void
mii_wbits(kio_addr_t ioaddr, unsigned data, int len)
{
unsigned m = 1 << (len-1);
for (; m; m >>= 1)
mii_putbit(ioaddr, data & m);
}
static unsigned
mii_rd(kio_addr_t ioaddr, u_char phyaddr, u_char phyreg)
{
int i;
unsigned data=0, m;
SelectPage(2);
for (i=0; i < 32; i++) /* 32 bit preamble */
mii_putbit(ioaddr, 1);
mii_wbits(ioaddr, 0x06, 4); /* Start and opcode for read */
mii_wbits(ioaddr, phyaddr, 5); /* PHY address to be accessed */
mii_wbits(ioaddr, phyreg, 5); /* PHY register to read */
mii_idle(ioaddr); /* turn around */
mii_getbit(ioaddr);
for (m = 1<<15; m; m >>= 1)
if (mii_getbit(ioaddr))
data |= m;
mii_idle(ioaddr);
return data;
}
static void
mii_wr(kio_addr_t ioaddr, u_char phyaddr, u_char phyreg, unsigned data, int len)
{
int i;
SelectPage(2);
for (i=0; i < 32; i++) /* 32 bit preamble */
mii_putbit(ioaddr, 1);
mii_wbits(ioaddr, 0x05, 4); /* Start and opcode for write */
mii_wbits(ioaddr, phyaddr, 5); /* PHY address to be accessed */
mii_wbits(ioaddr, phyreg, 5); /* PHY Register to write */
mii_putbit(ioaddr, 1); /* turn around */
mii_putbit(ioaddr, 0);
mii_wbits(ioaddr, data, len); /* And write the data */
mii_idle(ioaddr);
}
/*============= Main bulk of functions =========================*/
/****************
* xirc2ps_attach() creates an "instance" of the driver, allocating
* local data structures for one device. The device is registered
* with Card Services.
*
* The dev_link structure is initialized, but we don't actually
* configure the card at this point -- we wait until we receive a
* card insertion event.
*/
static int
xirc2ps_probe(struct pcmcia_device *link)
{
struct net_device *dev;
local_info_t *local;
DEBUG(0, "attach()\n");
/* Allocate the device structure */
dev = alloc_etherdev(sizeof(local_info_t));
if (!dev)
return -ENOMEM;
local = netdev_priv(dev);
local->p_dev = link;
link->priv = dev;
/* General socket configuration */
link->conf.Attributes = CONF_ENABLE_IRQ;
link->conf.IntType = INT_MEMORY_AND_IO;
link->conf.ConfigIndex = 1;
link->conf.Present = PRESENT_OPTION;
link->irq.Handler = xirc2ps_interrupt;
link->irq.Instance = dev;
/* Fill in card specific entries */
SET_MODULE_OWNER(dev);
dev->hard_start_xmit = &do_start_xmit;
dev->set_config = &do_config;
dev->get_stats = &do_get_stats;
dev->do_ioctl = &do_ioctl;
SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
dev->set_multicast_list = &set_multicast_list;
dev->open = &do_open;
dev->stop = &do_stop;
#ifdef HAVE_TX_TIMEOUT
dev->tx_timeout = do_tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
INIT_WORK(&local->tx_timeout_task, xirc2ps_tx_timeout_task, dev);
#endif
return xirc2ps_config(link);
} /* xirc2ps_attach */
/****************
* 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
xirc2ps_detach(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
DEBUG(0, "detach(0x%p)\n", link);
if (link->dev_node)
unregister_netdev(dev);
xirc2ps_release(link);
free_netdev(dev);
} /* xirc2ps_detach */
/****************
* Detect the type of the card. s is the buffer with the data of tuple 0x20
* Returns: 0 := not supported
* mediaid=11 and prodid=47
* Media-Id bits:
* Ethernet 0x01
* Tokenring 0x02
* Arcnet 0x04
* Wireless 0x08
* Modem 0x10
* GSM only 0x20
* Prod-Id bits:
* Pocket 0x10
* External 0x20
* Creditcard 0x40
* Cardbus 0x80
*
*/
static int
set_card_type(struct pcmcia_device *link, const void *s)
{
struct net_device *dev = link->priv;
local_info_t *local = netdev_priv(dev);
#ifdef PCMCIA_DEBUG
unsigned cisrev = ((const unsigned char *)s)[2];
#endif
unsigned mediaid= ((const unsigned char *)s)[3];
unsigned prodid = ((const unsigned char *)s)[4];
DEBUG(0, "cisrev=%02x mediaid=%02x prodid=%02x\n",
cisrev, mediaid, prodid);
local->mohawk = 0;
local->dingo = 0;
local->modem = 0;
local->card_type = XIR_UNKNOWN;
if (!(prodid & 0x40)) {
printk(KNOT_XIRC "Ooops: Not a creditcard\n");
return 0;
}
if (!(mediaid & 0x01)) {
printk(KNOT_XIRC "Not an Ethernet card\n");
return 0;
}
if (mediaid & 0x10) {
local->modem = 1;
switch(prodid & 15) {
case 1: local->card_type = XIR_CEM ; break;
case 2: local->card_type = XIR_CEM2 ; break;
case 3: local->card_type = XIR_CEM3 ; break;
case 4: local->card_type = XIR_CEM33 ; break;
case 5: local->card_type = XIR_CEM56M;
local->mohawk = 1;
break;
case 6:
case 7: /* 7 is the RealPort 10/56 */
local->card_type = XIR_CEM56 ;
local->mohawk = 1;
local->dingo = 1;
break;
}
} else {
switch(prodid & 15) {
case 1: local->card_type = has_ce2_string(link)? XIR_CE2 : XIR_CE ;
break;
case 2: local->card_type = XIR_CE2; break;
case 3: local->card_type = XIR_CE3;
local->mohawk = 1;
break;
}
}
if (local->card_type == XIR_CE || local->card_type == XIR_CEM) {
printk(KNOT_XIRC "Sorry, this is an old CE card\n");
return 0;
}
if (local->card_type == XIR_UNKNOWN)
printk(KNOT_XIRC "unknown card (mediaid=%02x prodid=%02x)\n",
mediaid, prodid);
return 1;
}
/****************
* There are some CE2 cards out which claim to be a CE card.
* This function looks for a "CE2" in the 3rd version field.
* Returns: true if this is a CE2
*/
static int
has_ce2_string(struct pcmcia_device * link)
{
tuple_t tuple;
cisparse_t parse;
u_char buf[256];
tuple.Attributes = 0;
tuple.TupleData = buf;
tuple.TupleDataMax = 254;
tuple.TupleOffset = 0;
tuple.DesiredTuple = CISTPL_VERS_1;
if (!first_tuple(link, &tuple, &parse) && parse.version_1.ns > 2) {
if (strstr(parse.version_1.str + parse.version_1.ofs[2], "CE2"))
return 1;
}
return 0;
}
/****************
* xirc2ps_config() 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.
*/
static int
xirc2ps_config(struct pcmcia_device * link)
{
struct net_device *dev = link->priv;
local_info_t *local = netdev_priv(dev);
tuple_t tuple;
cisparse_t parse;
kio_addr_t ioaddr;
int err, i;
u_char buf[64];
cistpl_lan_node_id_t *node_id = (cistpl_lan_node_id_t*)parse.funce.data;
cistpl_cftable_entry_t *cf = &parse.cftable_entry;
local->dingo_ccr = NULL;
DEBUG(0, "config(0x%p)\n", link);
/*
* This reads the card's CONFIG tuple to find its configuration
* registers.
*/
tuple.Attributes = 0;
tuple.TupleData = buf;
tuple.TupleDataMax = 64;
tuple.TupleOffset = 0;
/* Is this a valid card */
tuple.DesiredTuple = CISTPL_MANFID;
if ((err=first_tuple(link, &tuple, &parse))) {
printk(KNOT_XIRC "manfid not found in CIS\n");
goto failure;
}
switch(parse.manfid.manf) {
case MANFID_XIRCOM:
local->manf_str = "Xircom";
break;
case MANFID_ACCTON:
local->manf_str = "Accton";
break;
case MANFID_COMPAQ:
case MANFID_COMPAQ2:
local->manf_str = "Compaq";
break;
case MANFID_INTEL:
local->manf_str = "Intel";
break;
case MANFID_TOSHIBA:
local->manf_str = "Toshiba";
break;
default:
printk(KNOT_XIRC "Unknown Card Manufacturer ID: 0x%04x\n",
(unsigned)parse.manfid.manf);
goto failure;
}
DEBUG(0, "found %s card\n", local->manf_str);
if (!set_card_type(link, buf)) {
printk(KNOT_XIRC "this card is not supported\n");
goto failure;
}
/* get configuration stuff */
tuple.DesiredTuple = CISTPL_CONFIG;
if ((err=first_tuple(link, &tuple, &parse)))
goto cis_error;
link->conf.ConfigBase = parse.config.base;
link->conf.Present = parse.config.rmask[0];
/* get the ethernet address from the CIS */
tuple.DesiredTuple = CISTPL_FUNCE;
for (err = first_tuple(link, &tuple, &parse); !err;
err = next_tuple(link, &tuple, &parse)) {
/* Once I saw two CISTPL_FUNCE_LAN_NODE_ID entries:
* the first one with a length of zero the second correct -
* so I skip all entries with length 0 */
if (parse.funce.type == CISTPL_FUNCE_LAN_NODE_ID
&& ((cistpl_lan_node_id_t *)parse.funce.data)->nb)
break;
}
if (err) { /* not found: try to get the node-id from tuple 0x89 */
tuple.DesiredTuple = 0x89; /* data layout looks like tuple 0x22 */
if ((err = pcmcia_get_first_tuple(link, &tuple)) == 0 &&
(err = pcmcia_get_tuple_data(link, &tuple)) == 0) {
if (tuple.TupleDataLen == 8 && *buf == CISTPL_FUNCE_LAN_NODE_ID)
memcpy(&parse, buf, 8);
else
err = -1;
}
}
if (err) { /* another try (James Lehmer's CE2 version 4.1)*/
tuple.DesiredTuple = CISTPL_FUNCE;
for (err = first_tuple(link, &tuple, &parse); !err;
err = next_tuple(link, &tuple, &parse)) {
if (parse.funce.type == 0x02 && parse.funce.data[0] == 1
&& parse.funce.data[1] == 6 && tuple.TupleDataLen == 13) {
buf[1] = 4;
memcpy(&parse, buf+1, 8);
break;
}
}
}
if (err) {
printk(KNOT_XIRC "node-id not found in CIS\n");
goto failure;
}
node_id = (cistpl_lan_node_id_t *)parse.funce.data;
if (node_id->nb != 6) {
printk(KNOT_XIRC "malformed node-id in CIS\n");
goto failure;
}
for (i=0; i < 6; i++)
dev->dev_addr[i] = node_id->id[i];
link->io.IOAddrLines =10;
link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
link->irq.Attributes = IRQ_HANDLE_PRESENT;
link->irq.IRQInfo1 = IRQ_LEVEL_ID;
if (local->modem) {
int pass;
if (do_sound) {
link->conf.Attributes |= CONF_ENABLE_SPKR;
link->conf.Status |= CCSR_AUDIO_ENA;
}
link->irq.Attributes |= IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED ;
link->io.NumPorts2 = 8;
link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
if (local->dingo) {
/* Take the Modem IO port from the CIS and scan for a free
* Ethernet port */
link->io.NumPorts1 = 16; /* no Mako stuff anymore */
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
for (err = first_tuple(link, &tuple, &parse); !err;
err = next_tuple(link, &tuple, &parse)) {
if (cf->io.nwin > 0 && (cf->io.win[0].base & 0xf) == 8) {
for (ioaddr = 0x300; ioaddr < 0x400; ioaddr += 0x10) {
link->conf.ConfigIndex = cf->index ;
link->io.BasePort2 = cf->io.win[0].base;
link->io.BasePort1 = ioaddr;
if (!(err=pcmcia_request_io(link, &link->io)))
goto port_found;
}
}
}
} else {
link->io.NumPorts1 = 18;
/* We do 2 passes here: The first one uses the regular mapping and
* the second tries again, thereby considering that the 32 ports are
* mirrored every 32 bytes. Actually we use a mirrored port for
* the Mako if (on the first pass) the COR bit 5 is set.
*/
for (pass=0; pass < 2; pass++) {
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
for (err = first_tuple(link, &tuple, &parse); !err;
err = next_tuple(link, &tuple, &parse)){
if (cf->io.nwin > 0 && (cf->io.win[0].base & 0xf) == 8){
link->conf.ConfigIndex = cf->index ;
link->io.BasePort2 = cf->io.win[0].base;
link->io.BasePort1 = link->io.BasePort2
+ (pass ? (cf->index & 0x20 ? -24:8)
: (cf->index & 0x20 ? 8:-24));
if (!(err=pcmcia_request_io(link, &link->io)))
goto port_found;
}
}
}
/* if special option:
* try to configure as Ethernet only.
* .... */
}
printk(KNOT_XIRC "no ports available\n");
} else {
link->irq.Attributes |= IRQ_TYPE_EXCLUSIVE;
link->io.NumPorts1 = 16;
for (ioaddr = 0x300; ioaddr < 0x400; ioaddr += 0x10) {
link->io.BasePort1 = ioaddr;
if (!(err=pcmcia_request_io(link, &link->io)))
goto port_found;
}
link->io.BasePort1 = 0; /* let CS decide */
if ((err=pcmcia_request_io(link, &link->io))) {
cs_error(link, RequestIO, err);
goto config_error;
}
}
port_found:
if (err)
goto config_error;
/****************
* Now allocate an interrupt line. Note that this does not
* actually assign a handler to the interrupt.
*/
if ((err=pcmcia_request_irq(link, &link->irq))) {
cs_error(link, RequestIRQ, err);
goto config_error;
}
/****************
* This actually configures the PCMCIA socket -- setting up
* the I/O windows and the interrupt mapping.
*/
if ((err=pcmcia_request_configuration(link, &link->conf))) {
cs_error(link, RequestConfiguration, err);
goto config_error;
}
if (local->dingo) {
conf_reg_t reg;
win_req_t req;
memreq_t mem;
/* Reset the modem's BAR to the correct value
* This is necessary because in the RequestConfiguration call,
* the base address of the ethernet port (BasePort1) is written
* to the BAR registers of the modem.
*/
reg.Action = CS_WRITE;
reg.Offset = CISREG_IOBASE_0;
reg.Value = link->io.BasePort2 & 0xff;
if ((err = pcmcia_access_configuration_register(link, &reg))) {
cs_error(link, AccessConfigurationRegister, err);
goto config_error;
}
reg.Action = CS_WRITE;
reg.Offset = CISREG_IOBASE_1;
reg.Value = (link->io.BasePort2 >> 8) & 0xff;
if ((err = pcmcia_access_configuration_register(link, &reg))) {
cs_error(link, AccessConfigurationRegister, err);
goto config_error;
}
/* There is no config entry for the Ethernet part which
* is at 0x0800. So we allocate a window into the attribute
* memory and write direct to the CIS registers
*/
req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE;
req.Base = req.Size = 0;
req.AccessSpeed = 0;
if ((err = pcmcia_request_window(&link, &req, &link->win))) {
cs_error(link, RequestWindow, err);
goto config_error;
}
local->dingo_ccr = ioremap(req.Base,0x1000) + 0x0800;
mem.CardOffset = 0x0;
mem.Page = 0;
if ((err = pcmcia_map_mem_page(link->win, &mem))) {
cs_error(link, MapMemPage, err);
goto config_error;
}
/* Setup the CCRs; there are no infos in the CIS about the Ethernet
* part.
*/
writeb(0x47, local->dingo_ccr + CISREG_COR);
ioaddr = link->io.BasePort1;
writeb(ioaddr & 0xff , local->dingo_ccr + CISREG_IOBASE_0);
writeb((ioaddr >> 8)&0xff , local->dingo_ccr + CISREG_IOBASE_1);
#if 0
{
u_char tmp;
printk(KERN_INFO "ECOR:");
for (i=0; i < 7; i++) {
tmp = readb(local->dingo_ccr + i*2);
printk(" %02x", tmp);
}
printk("\n");
printk(KERN_INFO "DCOR:");
for (i=0; i < 4; i++) {
tmp = readb(local->dingo_ccr + 0x20 + i*2);
printk(" %02x", tmp);
}
printk("\n");
printk(KERN_INFO "SCOR:");
for (i=0; i < 10; i++) {
tmp = readb(local->dingo_ccr + 0x40 + i*2);
printk(" %02x", tmp);
}
printk("\n");
}
#endif
writeb(0x01, local->dingo_ccr + 0x20);
writeb(0x0c, local->dingo_ccr + 0x22);
writeb(0x00, local->dingo_ccr + 0x24);
writeb(0x00, local->dingo_ccr + 0x26);
writeb(0x00, local->dingo_ccr + 0x28);
}
/* The if_port symbol can be set when the module is loaded */
local->probe_port=0;
if (!if_port) {
local->probe_port = dev->if_port = 1;
} else if ((if_port >= 1 && if_port <= 2) ||
(local->mohawk && if_port==4))
dev->if_port = if_port;
else
printk(KNOT_XIRC "invalid if_port requested\n");
/* we can now register the device with the net subsystem */
dev->irq = link->irq.AssignedIRQ;
dev->base_addr = link->io.BasePort1;
if (local->dingo)
do_reset(dev, 1); /* a kludge to make the cem56 work */
link->dev_node = &local->node;
SET_NETDEV_DEV(dev, &handle_to_dev(link));
if ((err=register_netdev(dev))) {
printk(KNOT_XIRC "register_netdev() failed\n");
link->dev_node = NULL;
goto config_error;
}
strcpy(local->node.dev_name, dev->name);
/* give some infos about the hardware */
printk(KERN_INFO "%s: %s: port %#3lx, irq %d, hwaddr",
dev->name, local->manf_str,(u_long)dev->base_addr, (int)dev->irq);
for (i = 0; i < 6; i++)
printk("%c%02X", i?':':' ', dev->dev_addr[i]);
printk("\n");
return 0;
config_error:
xirc2ps_release(link);
return -ENODEV;
cis_error:
printk(KNOT_XIRC "unable to parse CIS\n");
failure:
return -ENODEV;
} /* xirc2ps_config */
/****************
* After a card is removed, xirc2ps_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
xirc2ps_release(struct pcmcia_device *link)
{
DEBUG(0, "release(0x%p)\n", link);
if (link->win) {
struct net_device *dev = link->priv;
local_info_t *local = netdev_priv(dev);
if (local->dingo)
iounmap(local->dingo_ccr - 0x0800);
}
pcmcia_disable_device(link);
} /* xirc2ps_release */
/*====================================================================*/
static int xirc2ps_suspend(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
if (link->open) {
netif_device_detach(dev);
do_powerdown(dev);
}
return 0;
}
static int xirc2ps_resume(struct pcmcia_device *link)
{
struct net_device *dev = link->priv;
if (link->open) {
do_reset(dev,1);
netif_device_attach(dev);
}
return 0;
}
/*====================================================================*/
/****************
* This is the Interrupt service route.
*/
static irqreturn_t
xirc2ps_interrupt(int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *)dev_id;
local_info_t *lp = netdev_priv(dev);
kio_addr_t ioaddr;
u_char saved_page;
unsigned bytes_rcvd;
unsigned int_status, eth_status, rx_status, tx_status;
unsigned rsr, pktlen;
ulong start_ticks = jiffies; /* fixme: jiffies rollover every 497 days
* is this something to worry about?
* -- on a laptop?
*/
if (!netif_device_present(dev))
return IRQ_HANDLED;
ioaddr = dev->base_addr;
if (lp->mohawk) { /* must disable the interrupt */
PutByte(XIRCREG_CR, 0);
}
DEBUG(6, "%s: interrupt %d at %#x.\n", dev->name, irq, ioaddr);
saved_page = GetByte(XIRCREG_PR);
/* Read the ISR to see whats the cause for the interrupt.
* This also clears the interrupt flags on CE2 cards
*/
int_status = GetByte(XIRCREG_ISR);
bytes_rcvd = 0;
loop_entry:
if (int_status == 0xff) { /* card may be ejected */
DEBUG(3, "%s: interrupt %d for dead card\n", dev->name, irq);
goto leave;
}
eth_status = GetByte(XIRCREG_ESR);
SelectPage(0x40);
rx_status = GetByte(XIRCREG40_RXST0);
PutByte(XIRCREG40_RXST0, (~rx_status & 0xff));
tx_status = GetByte(XIRCREG40_TXST0);
tx_status |= GetByte(XIRCREG40_TXST1) << 8;
PutByte(XIRCREG40_TXST0, 0);
PutByte(XIRCREG40_TXST1, 0);
DEBUG(3, "%s: ISR=%#2.2x ESR=%#2.2x RSR=%#2.2x TSR=%#4.4x\n",
dev->name, int_status, eth_status, rx_status, tx_status);
/***** receive section ******/
SelectPage(0);
while (eth_status & FullPktRcvd) {
rsr = GetByte(XIRCREG0_RSR);
if (bytes_rcvd > maxrx_bytes && (rsr & PktRxOk)) {
/* too many bytes received during this int, drop the rest of the
* packets */
lp->stats.rx_dropped++;
DEBUG(2, "%s: RX drop, too much done\n", dev->name);
} else if (rsr & PktRxOk) {
struct sk_buff *skb;
pktlen = GetWord(XIRCREG0_RBC);
bytes_rcvd += pktlen;
DEBUG(5, "rsr=%#02x packet_length=%u\n", rsr, pktlen);
skb = dev_alloc_skb(pktlen+3); /* 1 extra so we can use insw */
if (!skb) {
printk(KNOT_XIRC "low memory, packet dropped (size=%u)\n",
pktlen);
lp->stats.rx_dropped++;
} else { /* okay get the packet */
skb_reserve(skb, 2);
if (lp->silicon == 0 ) { /* work around a hardware bug */
unsigned rhsa; /* receive start address */
SelectPage(5);
rhsa = GetWord(XIRCREG5_RHSA0);
SelectPage(0);
rhsa += 3; /* skip control infos */
if (rhsa >= 0x8000)
rhsa = 0;
if (rhsa + pktlen > 0x8000) {
unsigned i;
u_char *buf = skb_put(skb, pktlen);
for (i=0; i < pktlen ; i++, rhsa++) {
buf[i] = GetByte(XIRCREG_EDP);
if (rhsa == 0x8000) {
rhsa = 0;
i--;
}
}
} else {
insw(ioaddr+XIRCREG_EDP,
skb_put(skb, pktlen), (pktlen+1)>>1);
}
}
#if 0
else if (lp->mohawk) {
/* To use this 32 bit access we should use
* a manual optimized loop
* Also the words are swapped, we can get more
* performance by using 32 bit access and swapping
* the words in a register. Will need this for cardbus
*
* Note: don't forget to change the ALLOC_SKB to .. +3
*/
unsigned i;
u_long *p = skb_put(skb, pktlen);
register u_long a;
kio_addr_t edpreg = ioaddr+XIRCREG_EDP-2;
for (i=0; i < len ; i += 4, p++) {
a = inl(edpreg);
__asm__("rorl $16,%0\n\t"
:"=q" (a)
: "0" (a));
*p = a;
}
}
#endif
else {
insw(ioaddr+XIRCREG_EDP, skb_put(skb, pktlen),
(pktlen+1)>>1);
}
skb->protocol = eth_type_trans(skb, dev);
skb->dev = dev;
netif_rx(skb);
dev->last_rx = jiffies;
lp->stats.rx_packets++;
lp->stats.rx_bytes += pktlen;
if (!(rsr & PhyPkt))
lp->stats.multicast++;
}
} else { /* bad packet */
DEBUG(5, "rsr=%#02x\n", rsr);
}
if (rsr & PktTooLong) {
lp->stats.rx_frame_errors++;
DEBUG(3, "%s: Packet too long\n", dev->name);
}
if (rsr & CRCErr) {
lp->stats.rx_crc_errors++;
DEBUG(3, "%s: CRC error\n", dev->name);
}
if (rsr & AlignErr) {
lp->stats.rx_fifo_errors++; /* okay ? */
DEBUG(3, "%s: Alignment error\n", dev->name);
}
/* clear the received/dropped/error packet */
PutWord(XIRCREG0_DO, 0x8000); /* issue cmd: skip_rx_packet */
/* get the new ethernet status */
eth_status = GetByte(XIRCREG_ESR);
}
if (rx_status & 0x10) { /* Receive overrun */
lp->stats.rx_over_errors++;
PutByte(XIRCREG_CR, ClearRxOvrun);
DEBUG(3, "receive overrun cleared\n");
}
/***** transmit section ******/
if (int_status & PktTxed) {
unsigned n, nn;
n = lp->last_ptr_value;
nn = GetByte(XIRCREG0_PTR);
lp->last_ptr_value = nn;
if (nn < n) /* rollover */
lp->stats.tx_packets += 256 - n;
else if (n == nn) { /* happens sometimes - don't know why */
DEBUG(0, "PTR not changed?\n");
} else
lp->stats.tx_packets += lp->last_ptr_value - n;
netif_wake_queue(dev);
}
if (tx_status & 0x0002) { /* Execessive collissions */
DEBUG(0, "tx restarted due to execssive collissions\n");
PutByte(XIRCREG_CR, RestartTx); /* restart transmitter process */
}
if (tx_status & 0x0040)
lp->stats.tx_aborted_errors++;
/* recalculate our work chunk so that we limit the duration of this
* ISR to about 1/10 of a second.
* Calculate only if we received a reasonable amount of bytes.
*/
if (bytes_rcvd > 1000) {
u_long duration = jiffies - start_ticks;
if (duration >= HZ/10) { /* if more than about 1/10 second */
maxrx_bytes = (bytes_rcvd * (HZ/10)) / duration;
if (maxrx_bytes < 2000)
maxrx_bytes = 2000;
else if (maxrx_bytes > 22000)
maxrx_bytes = 22000;
DEBUG(1, "set maxrx=%u (rcvd=%u ticks=%lu)\n",
maxrx_bytes, bytes_rcvd, duration);
} else if (!duration && maxrx_bytes < 22000) {
/* now much faster */
maxrx_bytes += 2000;
if (maxrx_bytes > 22000)
maxrx_bytes = 22000;
DEBUG(1, "set maxrx=%u\n", maxrx_bytes);
}
}
leave:
if (lockup_hack) {
if (int_status != 0xff && (int_status = GetByte(XIRCREG_ISR)) != 0)
goto loop_entry;
}
SelectPage(saved_page);
PutByte(XIRCREG_CR, EnableIntr); /* re-enable interrupts */
/* Instead of dropping packets during a receive, we could
* force an interrupt with this command:
* PutByte(XIRCREG_CR, EnableIntr|ForceIntr);
*/
return IRQ_HANDLED;
} /* xirc2ps_interrupt */
/*====================================================================*/
static void
xirc2ps_tx_timeout_task(void *data)
{
struct net_device *dev = data;
/* reset the card */
do_reset(dev,1);
dev->trans_start = jiffies;
netif_wake_queue(dev);
}
static void
do_tx_timeout(struct net_device *dev)
{
local_info_t *lp = netdev_priv(dev);
lp->stats.tx_errors++;
printk(KERN_NOTICE "%s: transmit timed out\n", dev->name);
schedule_work(&lp->tx_timeout_task);
}
static int
do_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
local_info_t *lp = netdev_priv(dev);
kio_addr_t ioaddr = dev->base_addr;
int okay;
unsigned freespace;
unsigned pktlen = skb->len;
DEBUG(1, "do_start_xmit(skb=%p, dev=%p) len=%u\n",
skb, dev, pktlen);
/* adjust the packet length to min. required
* and hope that the buffer is large enough
* to provide some random data.
* fixme: For Mohawk we can change this by sending
* a larger packetlen than we actually have; the chip will
* pad this in his buffer with random bytes
*/
if (pktlen < ETH_ZLEN)
{
if (skb_padto(skb, ETH_ZLEN))
return 0;
pktlen = ETH_ZLEN;
}
netif_stop_queue(dev);
SelectPage(0);
PutWord(XIRCREG0_TRS, (u_short)pktlen+2);
freespace = GetWord(XIRCREG0_TSO);
okay = freespace & 0x8000;
freespace &= 0x7fff;
/* TRS doesn't work - (indeed it is eliminated with sil-rev 1) */
okay = pktlen +2 < freespace;
DEBUG(2 + (okay ? 2 : 0), "%s: avail. tx space=%u%s\n",
dev->name, freespace, okay ? " (okay)":" (not enough)");
if (!okay) { /* not enough space */
return 1; /* upper layer may decide to requeue this packet */
}
/* send the packet */
PutWord(XIRCREG_EDP, (u_short)pktlen);
outsw(ioaddr+XIRCREG_EDP, skb->data, pktlen>>1);
if (pktlen & 1)
PutByte(XIRCREG_EDP, skb->data[pktlen-1]);
if (lp->mohawk)
PutByte(XIRCREG_CR, TransmitPacket|EnableIntr);
dev_kfree_skb (skb);
dev->trans_start = jiffies;
lp->stats.tx_bytes += pktlen;
netif_start_queue(dev);
return 0;
}
static struct net_device_stats *
do_get_stats(struct net_device *dev)
{
local_info_t *lp = netdev_priv(dev);
/* lp->stats.rx_missed_errors = GetByte(?) */
return &lp->stats;
}
/****************
* Set all addresses: This first one is the individual address,
* the next 9 addresses are taken from the multicast list and
* the rest is filled with the individual address.
*/
static void
set_addresses(struct net_device *dev)
{
kio_addr_t ioaddr = dev->base_addr;
local_info_t *lp = netdev_priv(dev);
struct dev_mc_list *dmi = dev->mc_list;
char *addr;
int i,j,k,n;
SelectPage(k=0x50);
for (i=0,j=8,n=0; ; i++, j++) {
if (i > 5) {
if (++n > 9)
break;
i = 0;
}
if (j > 15) {
j = 8;
k++;
SelectPage(k);
}
if (n && n <= dev->mc_count && dmi) {
addr = dmi->dmi_addr;
dmi = dmi->next;
} else
addr = dev->dev_addr;
if (lp->mohawk)
PutByte(j, addr[5-i]);
else
PutByte(j, addr[i]);
}
SelectPage(0);
}
/****************
* Set or clear the multicast filter for this adaptor.
* We can filter up to 9 addresses, if more are requested we set
* multicast promiscuous mode.
*/
static void
set_multicast_list(struct net_device *dev)
{
kio_addr_t ioaddr = dev->base_addr;
SelectPage(0x42);
if (dev->flags & IFF_PROMISC) { /* snoop */
PutByte(XIRCREG42_SWC1, 0x06); /* set MPE and PME */
} else if (dev->mc_count > 9 || (dev->flags & IFF_ALLMULTI)) {
PutByte(XIRCREG42_SWC1, 0x06); /* set MPE */
} else if (dev->mc_count) {
/* the chip can filter 9 addresses perfectly */
PutByte(XIRCREG42_SWC1, 0x00);
SelectPage(0x40);
PutByte(XIRCREG40_CMD0, Offline);
set_addresses(dev);
SelectPage(0x40);
PutByte(XIRCREG40_CMD0, EnableRecv | Online);
} else { /* standard usage */
PutByte(XIRCREG42_SWC1, 0x00);
}
SelectPage(0);
}
static int
do_config(struct net_device *dev, struct ifmap *map)
{
local_info_t *local = netdev_priv(dev);
DEBUG(0, "do_config(%p)\n", dev);
if (map->port != 255 && map->port != dev->if_port) {
if (map->port > 4)
return -EINVAL;
if (!map->port) {
local->probe_port = 1;
dev->if_port = 1;
} else {
local->probe_port = 0;
dev->if_port = map->port;
}
printk(KERN_INFO "%s: switching to %s port\n",
dev->name, if_names[dev->if_port]);
do_reset(dev,1); /* not the fine way :-) */
}
return 0;
}
/****************
* Open the driver
*/
static int
do_open(struct net_device *dev)
{
local_info_t *lp = netdev_priv(dev);
struct pcmcia_device *link = lp->p_dev;
DEBUG(0, "do_open(%p)\n", dev);
/* Check that the PCMCIA card is still here. */
/* Physical device present signature. */
if (!pcmcia_dev_present(link))
return -ENODEV;
/* okay */
link->open++;
netif_start_queue(dev);
do_reset(dev,1);
return 0;
}
static void netdev_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
strcpy(info->driver, "xirc2ps_cs");
sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
}
static const struct ethtool_ops netdev_ethtool_ops = {
.get_drvinfo = netdev_get_drvinfo,
};
static int
do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
local_info_t *local = netdev_priv(dev);
kio_addr_t ioaddr = dev->base_addr;
u16 *data = (u16 *)&rq->ifr_ifru;
DEBUG(1, "%s: ioctl(%-.6s, %#04x) %04x %04x %04x %04x\n",
dev->name, rq->ifr_ifrn.ifrn_name, cmd,
data[0], data[1], data[2], data[3]);
if (!local->mohawk)
return -EOPNOTSUPP;
switch(cmd) {
case SIOCGMIIPHY: /* Get the address of the PHY in use. */
data[0] = 0; /* we have only this address */
/* fall through */
case SIOCGMIIREG: /* Read the specified MII register. */
data[3] = mii_rd(ioaddr, data[0] & 0x1f, data[1] & 0x1f);
break;
case SIOCSMIIREG: /* Write the specified MII register */
if (!capable(CAP_NET_ADMIN))
return -EPERM;
mii_wr(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2], 16);
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static void
hardreset(struct net_device *dev)
{
local_info_t *local = netdev_priv(dev);
kio_addr_t ioaddr = dev->base_addr;
SelectPage(4);
udelay(1);
PutByte(XIRCREG4_GPR1, 0); /* clear bit 0: power down */
msleep(40); /* wait 40 msec */
if (local->mohawk)
PutByte(XIRCREG4_GPR1, 1); /* set bit 0: power up */
else
PutByte(XIRCREG4_GPR1, 1 | 4); /* set bit 0: power up, bit 2: AIC */
msleep(20); /* wait 20 msec */
}
static void
do_reset(struct net_device *dev, int full)
{
local_info_t *local = netdev_priv(dev);
kio_addr_t ioaddr = dev->base_addr;
unsigned value;
DEBUG(0, "%s: do_reset(%p,%d)\n", dev? dev->name:"eth?", dev, full);
hardreset(dev);
PutByte(XIRCREG_CR, SoftReset); /* set */
msleep(20); /* wait 20 msec */
PutByte(XIRCREG_CR, 0); /* clear */
msleep(40); /* wait 40 msec */
if (local->mohawk) {
SelectPage(4);
/* set pin GP1 and GP2 to output (0x0c)
* set GP1 to low to power up the ML6692 (0x00)
* set GP2 to high to power up the 10Mhz chip (0x02)
*/
PutByte(XIRCREG4_GPR0, 0x0e);
}
/* give the circuits some time to power up */
msleep(500); /* about 500ms */
local->last_ptr_value = 0;
local->silicon = local->mohawk ? (GetByte(XIRCREG4_BOV) & 0x70) >> 4
: (GetByte(XIRCREG4_BOV) & 0x30) >> 4;
if (local->probe_port) {
if (!local->mohawk) {
SelectPage(4);
PutByte(XIRCREG4_GPR0, 4);
local->probe_port = 0;
}
} else if (dev->if_port == 2) { /* enable 10Base2 */
SelectPage(0x42);
PutByte(XIRCREG42_SWC1, 0xC0);
} else { /* enable 10BaseT */
SelectPage(0x42);
PutByte(XIRCREG42_SWC1, 0x80);
}
msleep(40); /* wait 40 msec to let it complete */
#ifdef PCMCIA_DEBUG
if (pc_debug) {
SelectPage(0);
value = GetByte(XIRCREG_ESR); /* read the ESR */
printk(KERN_DEBUG "%s: ESR is: %#02x\n", dev->name, value);
}
#endif
/* setup the ECR */
SelectPage(1);
PutByte(XIRCREG1_IMR0, 0xff); /* allow all ints */
PutByte(XIRCREG1_IMR1, 1 ); /* and Set TxUnderrunDetect */
value = GetByte(XIRCREG1_ECR);
#if 0
if (local->mohawk)
value |= DisableLinkPulse;
PutByte(XIRCREG1_ECR, value);
#endif
DEBUG(0, "%s: ECR is: %#02x\n", dev->name, value);
SelectPage(0x42);
PutByte(XIRCREG42_SWC0, 0x20); /* disable source insertion */
if (local->silicon != 1) {
/* set the local memory dividing line.
* The comments in the sample code say that this is only
* settable with the scipper version 2 which is revision 0.
* Always for CE3 cards
*/
SelectPage(2);
PutWord(XIRCREG2_RBS, 0x2000);
}
if (full)
set_addresses(dev);
/* Hardware workaround:
* The receive byte pointer after reset is off by 1 so we need
* to move the offset pointer back to 0.
*/
SelectPage(0);
PutWord(XIRCREG0_DO, 0x2000); /* change offset command, off=0 */
/* setup MAC IMRs and clear status registers */
SelectPage(0x40); /* Bit 7 ... bit 0 */
PutByte(XIRCREG40_RMASK0, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */
PutByte(XIRCREG40_TMASK0, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
PutByte(XIRCREG40_TMASK1, 0xb0); /* rsv, rsv, PTD, EXT, rsv,rsv,rsv, rsv*/
PutByte(XIRCREG40_RXST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */
PutByte(XIRCREG40_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
PutByte(XIRCREG40_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */
if (full && local->mohawk && init_mii(dev)) {
if (dev->if_port == 4 || local->dingo || local->new_mii) {
printk(KERN_INFO "%s: MII selected\n", dev->name);
SelectPage(2);
PutByte(XIRCREG2_MSR, GetByte(XIRCREG2_MSR) | 0x08);
msleep(20);
} else {
printk(KERN_INFO "%s: MII detected; using 10mbs\n",
dev->name);
SelectPage(0x42);
if (dev->if_port == 2) /* enable 10Base2 */
PutByte(XIRCREG42_SWC1, 0xC0);
else /* enable 10BaseT */
PutByte(XIRCREG42_SWC1, 0x80);
msleep(40); /* wait 40 msec to let it complete */
}
if (full_duplex)
PutByte(XIRCREG1_ECR, GetByte(XIRCREG1_ECR | FullDuplex));
} else { /* No MII */
SelectPage(0);
value = GetByte(XIRCREG_ESR); /* read the ESR */
dev->if_port = (value & MediaSelect) ? 1 : 2;
}
/* configure the LEDs */
SelectPage(2);
if (dev->if_port == 1 || dev->if_port == 4) /* TP: Link and Activity */
PutByte(XIRCREG2_LED, 0x3b);
else /* Coax: Not-Collision and Activity */
PutByte(XIRCREG2_LED, 0x3a);
if (local->dingo)
PutByte(0x0b, 0x04); /* 100 Mbit LED */
/* enable receiver and put the mac online */
if (full) {
SelectPage(0x40);
PutByte(XIRCREG40_CMD0, EnableRecv | Online);
}
/* setup Ethernet IMR and enable interrupts */
SelectPage(1);
PutByte(XIRCREG1_IMR0, 0xff);
udelay(1);
SelectPage(0);
PutByte(XIRCREG_CR, EnableIntr);
if (local->modem && !local->dingo) { /* do some magic */
if (!(GetByte(0x10) & 0x01))
PutByte(0x10, 0x11); /* unmask master-int bit */
}
if (full)
printk(KERN_INFO "%s: media %s, silicon revision %d\n",
dev->name, if_names[dev->if_port], local->silicon);
/* We should switch back to page 0 to avoid a bug in revision 0
* where regs with offset below 8 can't be read after an access
* to the MAC registers */
SelectPage(0);
}
/****************
* Initialize the Media-Independent-Interface
* Returns: True if we have a good MII
*/
static int
init_mii(struct net_device *dev)
{
local_info_t *local = netdev_priv(dev);
kio_addr_t ioaddr = dev->base_addr;
unsigned control, status, linkpartner;
int i;
if (if_port == 4 || if_port == 1) { /* force 100BaseT or 10BaseT */
dev->if_port = if_port;
local->probe_port = 0;
return 1;
}
status = mii_rd(ioaddr, 0, 1);
if ((status & 0xff00) != 0x7800)
return 0; /* No MII */
local->new_mii = (mii_rd(ioaddr, 0, 2) != 0xffff);
if (local->probe_port)
control = 0x1000; /* auto neg */
else if (dev->if_port == 4)
control = 0x2000; /* no auto neg, 100mbs mode */
else
control = 0x0000; /* no auto neg, 10mbs mode */
mii_wr(ioaddr, 0, 0, control, 16);
udelay(100);
control = mii_rd(ioaddr, 0, 0);
if (control & 0x0400) {
printk(KERN_NOTICE "%s can't take PHY out of isolation mode\n",
dev->name);
local->probe_port = 0;
return 0;
}
if (local->probe_port) {
/* according to the DP83840A specs the auto negotiation process
* may take up to 3.5 sec, so we use this also for our ML6692
* Fixme: Better to use a timer here!
*/
for (i=0; i < 35; i++) {
msleep(100); /* wait 100 msec */
status = mii_rd(ioaddr, 0, 1);
if ((status & 0x0020) && (status & 0x0004))
break;
}
if (!(status & 0x0020)) {
printk(KERN_INFO "%s: autonegotiation failed;"
" using 10mbs\n", dev->name);
if (!local->new_mii) {
control = 0x0000;
mii_wr(ioaddr, 0, 0, control, 16);
udelay(100);
SelectPage(0);
dev->if_port = (GetByte(XIRCREG_ESR) & MediaSelect) ? 1 : 2;
}
} else {
linkpartner = mii_rd(ioaddr, 0, 5);
printk(KERN_INFO "%s: MII link partner: %04x\n",
dev->name, linkpartner);
if (linkpartner & 0x0080) {
dev->if_port = 4;
} else
dev->if_port = 1;
}
}
return 1;
}
static void
do_powerdown(struct net_device *dev)
{
kio_addr_t ioaddr = dev->base_addr;
DEBUG(0, "do_powerdown(%p)\n", dev);
SelectPage(4);
PutByte(XIRCREG4_GPR1, 0); /* clear bit 0: power down */
SelectPage(0);
}
static int
do_stop(struct net_device *dev)
{
kio_addr_t ioaddr = dev->base_addr;
local_info_t *lp = netdev_priv(dev);
struct pcmcia_device *link = lp->p_dev;
DEBUG(0, "do_stop(%p)\n", dev);
if (!link)
return -ENODEV;
netif_stop_queue(dev);
SelectPage(0);
PutByte(XIRCREG_CR, 0); /* disable interrupts */
SelectPage(0x01);
PutByte(XIRCREG1_IMR0, 0x00); /* forbid all ints */
SelectPage(4);
PutByte(XIRCREG4_GPR1, 0); /* clear bit 0: power down */
SelectPage(0);
link->open--;
return 0;
}
static struct pcmcia_device_id xirc2ps_ids[] = {
PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0089, 0x110a),
PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0138, 0x110a),
PCMCIA_PFC_DEVICE_PROD_ID13(0, "Xircom", "CEM28", 0x2e3ee845, 0x0ea978ea),
PCMCIA_PFC_DEVICE_PROD_ID13(0, "Xircom", "CEM33", 0x2e3ee845, 0x80609023),
PCMCIA_PFC_DEVICE_PROD_ID13(0, "Xircom", "CEM56", 0x2e3ee845, 0xa650c32a),
PCMCIA_PFC_DEVICE_PROD_ID13(0, "Xircom", "REM10", 0x2e3ee845, 0x76df1d29),
PCMCIA_PFC_DEVICE_PROD_ID13(0, "Xircom", "XEM5600", 0x2e3ee845, 0xf1403719),
PCMCIA_PFC_DEVICE_PROD_ID12(0, "Xircom", "CreditCard Ethernet+Modem II", 0x2e3ee845, 0xeca401bf),
PCMCIA_DEVICE_MANF_CARD(0x01bf, 0x010a),
PCMCIA_DEVICE_PROD_ID13("Toshiba Information Systems", "TPCENET", 0x1b3b94fe, 0xf381c1a2),
PCMCIA_DEVICE_PROD_ID13("Xircom", "CE3-10/100", 0x2e3ee845, 0x0ec0ac37),
PCMCIA_DEVICE_PROD_ID13("Xircom", "PS-CE2-10", 0x2e3ee845, 0x947d9073),
PCMCIA_DEVICE_PROD_ID13("Xircom", "R2E-100BTX", 0x2e3ee845, 0x2464a6e3),
PCMCIA_DEVICE_PROD_ID13("Xircom", "RE-10", 0x2e3ee845, 0x3e08d609),
PCMCIA_DEVICE_PROD_ID13("Xircom", "XE2000", 0x2e3ee845, 0xf7188e46),
PCMCIA_DEVICE_PROD_ID12("Compaq", "Ethernet LAN Card", 0x54f7c49c, 0x9fd2f0a2),
PCMCIA_DEVICE_PROD_ID12("Compaq", "Netelligent 10/100 PC Card", 0x54f7c49c, 0xefe96769),
PCMCIA_DEVICE_PROD_ID12("Intel", "EtherExpress(TM) PRO/100 PC Card Mobile Adapter16", 0x816cc815, 0x174397db),
PCMCIA_DEVICE_PROD_ID12("Toshiba", "10/100 Ethernet PC Card", 0x44a09d9c, 0xb44deecf),
/* also matches CFE-10 cards! */
/* PCMCIA_DEVICE_MANF_CARD(0x0105, 0x010a), */
PCMCIA_DEVICE_NULL,
};
MODULE_DEVICE_TABLE(pcmcia, xirc2ps_ids);
static struct pcmcia_driver xirc2ps_cs_driver = {
.owner = THIS_MODULE,
.drv = {
.name = "xirc2ps_cs",
},
.probe = xirc2ps_probe,
.remove = xirc2ps_detach,
.id_table = xirc2ps_ids,
.suspend = xirc2ps_suspend,
.resume = xirc2ps_resume,
};
static int __init
init_xirc2ps_cs(void)
{
return pcmcia_register_driver(&xirc2ps_cs_driver);
}
static void __exit
exit_xirc2ps_cs(void)
{
pcmcia_unregister_driver(&xirc2ps_cs_driver);
}
module_init(init_xirc2ps_cs);
module_exit(exit_xirc2ps_cs);
#ifndef MODULE
static int __init setup_xirc2ps_cs(char *str)
{
/* if_port, full_duplex, do_sound, lockup_hack
*/
int ints[10] = { -1 };
str = get_options(str, 9, ints);
#define MAYBE_SET(X,Y) if (ints[0] >= Y && ints[Y] != -1) { X = ints[Y]; }
MAYBE_SET(if_port, 3);
MAYBE_SET(full_duplex, 4);
MAYBE_SET(do_sound, 5);
MAYBE_SET(lockup_hack, 6);
#undef MAYBE_SET
return 1;
}
__setup("xirc2ps_cs=", setup_xirc2ps_cs);
#endif
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