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linux/drivers/net/tokenring/madgemc.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

785 lines
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/*
* madgemc.c: Driver for the Madge Smart 16/4 MC16 MCA token ring card.
*
* Written 2000 by Adam Fritzler
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
* This driver module supports the following cards:
* - Madge Smart 16/4 Ringnode MC16
* - Madge Smart 16/4 Ringnode MC32 (??)
*
* Maintainer(s):
* AF Adam Fritzler mid@auk.cx
*
* Modification History:
* 16-Jan-00 AF Created
*
*/
static const char version[] = "madgemc.c: v0.91 23/01/2000 by Adam Fritzler\n";
#include <linux/module.h>
#include <linux/mca.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/trdevice.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/irq.h>
#include "tms380tr.h"
#include "madgemc.h" /* Madge-specific constants */
#define MADGEMC_IO_EXTENT 32
#define MADGEMC_SIF_OFFSET 0x08
struct card_info {
/*
* These are read from the BIA ROM.
*/
unsigned int manid;
unsigned int cardtype;
unsigned int cardrev;
unsigned int ramsize;
/*
* These are read from the MCA POS registers.
*/
unsigned int burstmode:2;
unsigned int fairness:1; /* 0 = Fair, 1 = Unfair */
unsigned int arblevel:4;
unsigned int ringspeed:2; /* 0 = 4mb, 1 = 16, 2 = Auto/none */
unsigned int cabletype:1; /* 0 = RJ45, 1 = DB9 */
};
static int madgemc_open(struct net_device *dev);
static int madgemc_close(struct net_device *dev);
static int madgemc_chipset_init(struct net_device *dev);
static void madgemc_read_rom(struct net_device *dev, struct card_info *card);
static unsigned short madgemc_setnselout_pins(struct net_device *dev);
static void madgemc_setcabletype(struct net_device *dev, int type);
static int madgemc_mcaproc(char *buf, int slot, void *d);
static void madgemc_setregpage(struct net_device *dev, int page);
static void madgemc_setsifsel(struct net_device *dev, int val);
static void madgemc_setint(struct net_device *dev, int val);
static irqreturn_t madgemc_interrupt(int irq, void *dev_id);
/*
* These work around paging, however they don't guarentee you're on the
* right page.
*/
#define SIFREADB(reg) (inb(dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
#define SIFWRITEB(val, reg) (outb(val, dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
#define SIFREADW(reg) (inw(dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
#define SIFWRITEW(val, reg) (outw(val, dev->base_addr + ((reg<0x8)?reg:reg-0x8)))
/*
* Read a byte-length value from the register.
*/
static unsigned short madgemc_sifreadb(struct net_device *dev, unsigned short reg)
{
unsigned short ret;
if (reg<0x8)
ret = SIFREADB(reg);
else {
madgemc_setregpage(dev, 1);
ret = SIFREADB(reg);
madgemc_setregpage(dev, 0);
}
return ret;
}
/*
* Write a byte-length value to a register.
*/
static void madgemc_sifwriteb(struct net_device *dev, unsigned short val, unsigned short reg)
{
if (reg<0x8)
SIFWRITEB(val, reg);
else {
madgemc_setregpage(dev, 1);
SIFWRITEB(val, reg);
madgemc_setregpage(dev, 0);
}
return;
}
/*
* Read a word-length value from a register
*/
static unsigned short madgemc_sifreadw(struct net_device *dev, unsigned short reg)
{
unsigned short ret;
if (reg<0x8)
ret = SIFREADW(reg);
else {
madgemc_setregpage(dev, 1);
ret = SIFREADW(reg);
madgemc_setregpage(dev, 0);
}
return ret;
}
/*
* Write a word-length value to a register.
*/
static void madgemc_sifwritew(struct net_device *dev, unsigned short val, unsigned short reg)
{
if (reg<0x8)
SIFWRITEW(val, reg);
else {
madgemc_setregpage(dev, 1);
SIFWRITEW(val, reg);
madgemc_setregpage(dev, 0);
}
return;
}
static int __devinit madgemc_probe(struct device *device)
{
static int versionprinted;
struct net_device *dev;
struct net_local *tp;
struct card_info *card;
struct mca_device *mdev = to_mca_device(device);
int ret = 0, i = 0;
if (versionprinted++ == 0)
printk("%s", version);
if(mca_device_claimed(mdev))
return -EBUSY;
mca_device_set_claim(mdev, 1);
dev = alloc_trdev(sizeof(struct net_local));
if (!dev) {
printk("madgemc: unable to allocate dev space\n");
mca_device_set_claim(mdev, 0);
ret = -ENOMEM;
goto getout;
}
SET_MODULE_OWNER(dev);
dev->dma = 0;
card = kmalloc(sizeof(struct card_info), GFP_KERNEL);
if (card==NULL) {
printk("madgemc: unable to allocate card struct\n");
ret = -ENOMEM;
goto getout1;
}
/*
* Parse configuration information. This all comes
* directly from the publicly available @002d.ADF.
* Get it from Madge or your local ADF library.
*/
/*
* Base address
*/
dev->base_addr = 0x0a20 +
((mdev->pos[2] & MC16_POS2_ADDR2)?0x0400:0) +
((mdev->pos[0] & MC16_POS0_ADDR1)?0x1000:0) +
((mdev->pos[3] & MC16_POS3_ADDR3)?0x2000:0);
/*
* Interrupt line
*/
switch(mdev->pos[0] >> 6) { /* upper two bits */
case 0x1: dev->irq = 3; break;
case 0x2: dev->irq = 9; break; /* IRQ 2 = IRQ 9 */
case 0x3: dev->irq = 10; break;
default: dev->irq = 0; break;
}
if (dev->irq == 0) {
printk("%s: invalid IRQ\n", dev->name);
ret = -EBUSY;
goto getout2;
}
if (!request_region(dev->base_addr, MADGEMC_IO_EXTENT,
"madgemc")) {
printk(KERN_INFO "madgemc: unable to setup Smart MC in slot %d because of I/O base conflict at 0x%04lx\n", mdev->slot, dev->base_addr);
dev->base_addr += MADGEMC_SIF_OFFSET;
ret = -EBUSY;
goto getout2;
}
dev->base_addr += MADGEMC_SIF_OFFSET;
/*
* Arbitration Level
*/
card->arblevel = ((mdev->pos[0] >> 1) & 0x7) + 8;
/*
* Burst mode and Fairness
*/
card->burstmode = ((mdev->pos[2] >> 6) & 0x3);
card->fairness = ((mdev->pos[2] >> 4) & 0x1);
/*
* Ring Speed
*/
if ((mdev->pos[1] >> 2)&0x1)
card->ringspeed = 2; /* not selected */
else if ((mdev->pos[2] >> 5) & 0x1)
card->ringspeed = 1; /* 16Mb */
else
card->ringspeed = 0; /* 4Mb */
/*
* Cable type
*/
if ((mdev->pos[1] >> 6)&0x1)
card->cabletype = 1; /* STP/DB9 */
else
card->cabletype = 0; /* UTP/RJ-45 */
/*
* ROM Info. This requires us to actually twiddle
* bits on the card, so we must ensure above that
* the base address is free of conflict (request_region above).
*/
madgemc_read_rom(dev, card);
if (card->manid != 0x4d) { /* something went wrong */
printk(KERN_INFO "%s: Madge MC ROM read failed (unknown manufacturer ID %02x)\n", dev->name, card->manid);
goto getout3;
}
if ((card->cardtype != 0x08) && (card->cardtype != 0x0d)) {
printk(KERN_INFO "%s: Madge MC ROM read failed (unknown card ID %02x)\n", dev->name, card->cardtype);
ret = -EIO;
goto getout3;
}
/* All cards except Rev 0 and 1 MC16's have 256kb of RAM */
if ((card->cardtype == 0x08) && (card->cardrev <= 0x01))
card->ramsize = 128;
else
card->ramsize = 256;
printk("%s: %s Rev %d at 0x%04lx IRQ %d\n",
dev->name,
(card->cardtype == 0x08)?MADGEMC16_CARDNAME:
MADGEMC32_CARDNAME, card->cardrev,
dev->base_addr, dev->irq);
if (card->cardtype == 0x0d)
printk("%s: Warning: MC32 support is experimental and highly untested\n", dev->name);
if (card->ringspeed==2) { /* Unknown */
printk("%s: Warning: Ring speed not set in POS -- Please run the reference disk and set it!\n", dev->name);
card->ringspeed = 1; /* default to 16mb */
}
printk("%s: RAM Size: %dKB\n", dev->name, card->ramsize);
printk("%s: Ring Speed: %dMb/sec on %s\n", dev->name,
(card->ringspeed)?16:4,
card->cabletype?"STP/DB9":"UTP/RJ-45");
printk("%s: Arbitration Level: %d\n", dev->name,
card->arblevel);
printk("%s: Burst Mode: ", dev->name);
switch(card->burstmode) {
case 0: printk("Cycle steal"); break;
case 1: printk("Limited burst"); break;
case 2: printk("Delayed release"); break;
case 3: printk("Immediate release"); break;
}
printk(" (%s)\n", (card->fairness)?"Unfair":"Fair");
/*
* Enable SIF before we assign the interrupt handler,
* just in case we get spurious interrupts that need
* handling.
*/
outb(0, dev->base_addr + MC_CONTROL_REG0); /* sanity */
madgemc_setsifsel(dev, 1);
if (request_irq(dev->irq, madgemc_interrupt, IRQF_SHARED,
"madgemc", dev)) {
ret = -EBUSY;
goto getout3;
}
madgemc_chipset_init(dev); /* enables interrupts! */
madgemc_setcabletype(dev, card->cabletype);
/* Setup MCA structures */
mca_device_set_name(mdev, (card->cardtype == 0x08)?MADGEMC16_CARDNAME:MADGEMC32_CARDNAME);
mca_set_adapter_procfn(mdev->slot, madgemc_mcaproc, dev);
printk("%s: Ring Station Address: ", dev->name);
printk("%2.2x", dev->dev_addr[0]);
for (i = 1; i < 6; i++)
printk(":%2.2x", dev->dev_addr[i]);
printk("\n");
if (tmsdev_init(dev, device)) {
printk("%s: unable to get memory for dev->priv.\n",
dev->name);
ret = -ENOMEM;
goto getout4;
}
tp = netdev_priv(dev);
/*
* The MC16 is physically a 32bit card. However, Madge
* insists on calling it 16bit, so I'll assume here that
* they know what they're talking about. Cut off DMA
* at 16mb.
*/
tp->setnselout = madgemc_setnselout_pins;
tp->sifwriteb = madgemc_sifwriteb;
tp->sifreadb = madgemc_sifreadb;
tp->sifwritew = madgemc_sifwritew;
tp->sifreadw = madgemc_sifreadw;
tp->DataRate = (card->ringspeed)?SPEED_16:SPEED_4;
memcpy(tp->ProductID, "Madge MCA 16/4 ", PROD_ID_SIZE + 1);
dev->open = madgemc_open;
dev->stop = madgemc_close;
tp->tmspriv = card;
dev_set_drvdata(device, dev);
if (register_netdev(dev) == 0)
return 0;
dev_set_drvdata(device, NULL);
ret = -ENOMEM;
getout4:
free_irq(dev->irq, dev);
getout3:
release_region(dev->base_addr-MADGEMC_SIF_OFFSET,
MADGEMC_IO_EXTENT);
getout2:
kfree(card);
getout1:
free_netdev(dev);
getout:
mca_device_set_claim(mdev, 0);
return ret;
}
/*
* Handle interrupts generated by the card
*
* The MicroChannel Madge cards need slightly more handling
* after an interrupt than other TMS380 cards do.
*
* First we must make sure it was this card that generated the
* interrupt (since interrupt sharing is allowed). Then,
* because we're using level-triggered interrupts (as is
* standard on MCA), we must toggle the interrupt line
* on the card in order to claim and acknowledge the interrupt.
* Once that is done, the interrupt should be handlable in
* the normal tms380tr_interrupt() routine.
*
* There's two ways we can check to see if the interrupt is ours,
* both with their own disadvantages...
*
* 1) Read in the SIFSTS register from the TMS controller. This
* is guarenteed to be accurate, however, there's a fairly
* large performance penalty for doing so: the Madge chips
* must request the register from the Eagle, the Eagle must
* read them from its internal bus, and then take the route
* back out again, for a 16bit read.
*
* 2) Use the MC_CONTROL_REG0_SINTR bit from the Madge ASICs.
* The major disadvantage here is that the accuracy of the
* bit is in question. However, it cuts out the extra read
* cycles it takes to read the Eagle's SIF, as its only an
* 8bit read, and theoretically the Madge bit is directly
* connected to the interrupt latch coming out of the Eagle
* hardware (that statement is not verified).
*
* I can't determine which of these methods has the best win. For now,
* we make a compromise. Use the Madge way for the first interrupt,
* which should be the fast-path, and then once we hit the first
* interrupt, keep on trying using the SIF method until we've
* exhausted all contiguous interrupts.
*
*/
static irqreturn_t madgemc_interrupt(int irq, void *dev_id)
{
int pending,reg1;
struct net_device *dev;
if (!dev_id) {
printk("madgemc_interrupt: was not passed a dev_id!\n");
return IRQ_NONE;
}
dev = (struct net_device *)dev_id;
/* Make sure its really us. -- the Madge way */
pending = inb(dev->base_addr + MC_CONTROL_REG0);
if (!(pending & MC_CONTROL_REG0_SINTR))
return IRQ_NONE; /* not our interrupt */
/*
* Since we're level-triggered, we may miss the rising edge
* of the next interrupt while we're off handling this one,
* so keep checking until the SIF verifies that it has nothing
* left for us to do.
*/
pending = STS_SYSTEM_IRQ;
do {
if (pending & STS_SYSTEM_IRQ) {
/* Toggle the interrupt to reset the latch on card */
reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
outb(reg1 ^ MC_CONTROL_REG1_SINTEN,
dev->base_addr + MC_CONTROL_REG1);
outb(reg1, dev->base_addr + MC_CONTROL_REG1);
/* Continue handling as normal */
tms380tr_interrupt(irq, dev_id);
pending = SIFREADW(SIFSTS); /* restart - the SIF way */
} else
return IRQ_HANDLED;
} while (1);
return IRQ_HANDLED; /* not reachable */
}
/*
* Set the card to the prefered ring speed.
*
* Unlike newer cards, the MC16/32 have their speed selection
* circuit connected to the Madge ASICs and not to the TMS380
* NSELOUT pins. Set the ASIC bits correctly here, and return
* zero to leave the TMS NSELOUT bits unaffected.
*
*/
unsigned short madgemc_setnselout_pins(struct net_device *dev)
{
unsigned char reg1;
struct net_local *tp = netdev_priv(dev);
reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
if(tp->DataRate == SPEED_16)
reg1 |= MC_CONTROL_REG1_SPEED_SEL; /* add for 16mb */
else if (reg1 & MC_CONTROL_REG1_SPEED_SEL)
reg1 ^= MC_CONTROL_REG1_SPEED_SEL; /* remove for 4mb */
outb(reg1, dev->base_addr + MC_CONTROL_REG1);
return 0; /* no change */
}
/*
* Set the register page. This equates to the SRSX line
* on the TMS380Cx6.
*
* Register selection is normally done via three contiguous
* bits. However, some boards (such as the MC16/32) use only
* two bits, plus a separate bit in the glue chip. This
* sets the SRSX bit (the top bit). See page 4-17 in the
* Yellow Book for which registers are affected.
*
*/
static void madgemc_setregpage(struct net_device *dev, int page)
{
static int reg1;
reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
if ((page == 0) && (reg1 & MC_CONTROL_REG1_SRSX)) {
outb(reg1 ^ MC_CONTROL_REG1_SRSX,
dev->base_addr + MC_CONTROL_REG1);
}
else if (page == 1) {
outb(reg1 | MC_CONTROL_REG1_SRSX,
dev->base_addr + MC_CONTROL_REG1);
}
reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
return;
}
/*
* The SIF registers are not mapped into register space by default
* Set this to 1 to map them, 0 to map the BIA ROM.
*
*/
static void madgemc_setsifsel(struct net_device *dev, int val)
{
unsigned int reg0;
reg0 = inb(dev->base_addr + MC_CONTROL_REG0);
if ((val == 0) && (reg0 & MC_CONTROL_REG0_SIFSEL)) {
outb(reg0 ^ MC_CONTROL_REG0_SIFSEL,
dev->base_addr + MC_CONTROL_REG0);
} else if (val == 1) {
outb(reg0 | MC_CONTROL_REG0_SIFSEL,
dev->base_addr + MC_CONTROL_REG0);
}
reg0 = inb(dev->base_addr + MC_CONTROL_REG0);
return;
}
/*
* Enable SIF interrupts
*
* This does not enable interrupts in the SIF, but rather
* enables SIF interrupts to be passed onto the host.
*
*/
static void madgemc_setint(struct net_device *dev, int val)
{
unsigned int reg1;
reg1 = inb(dev->base_addr + MC_CONTROL_REG1);
if ((val == 0) && (reg1 & MC_CONTROL_REG1_SINTEN)) {
outb(reg1 ^ MC_CONTROL_REG1_SINTEN,
dev->base_addr + MC_CONTROL_REG1);
} else if (val == 1) {
outb(reg1 | MC_CONTROL_REG1_SINTEN,
dev->base_addr + MC_CONTROL_REG1);
}
return;
}
/*
* Cable type is set via control register 7. Bit zero high
* for UTP, low for STP.
*/
static void madgemc_setcabletype(struct net_device *dev, int type)
{
outb((type==0)?MC_CONTROL_REG7_CABLEUTP:MC_CONTROL_REG7_CABLESTP,
dev->base_addr + MC_CONTROL_REG7);
}
/*
* Enable the functions of the Madge chipset needed for
* full working order.
*/
static int madgemc_chipset_init(struct net_device *dev)
{
outb(0, dev->base_addr + MC_CONTROL_REG1); /* pull SRESET low */
tms380tr_wait(100); /* wait for card to reset */
/* bring back into normal operating mode */
outb(MC_CONTROL_REG1_NSRESET, dev->base_addr + MC_CONTROL_REG1);
/* map SIF registers */
madgemc_setsifsel(dev, 1);
/* enable SIF interrupts */
madgemc_setint(dev, 1);
return 0;
}
/*
* Disable the board, and put back into power-up state.
*/
static void madgemc_chipset_close(struct net_device *dev)
{
/* disable interrupts */
madgemc_setint(dev, 0);
/* unmap SIF registers */
madgemc_setsifsel(dev, 0);
return;
}
/*
* Read the card type (MC16 or MC32) from the card.
*
* The configuration registers are stored in two separate
* pages. Pages are flipped by clearing bit 3 of CONTROL_REG0 (PAGE)
* for page zero, or setting bit 3 for page one.
*
* Page zero contains the following data:
* Byte 0: Manufacturer ID (0x4D -- ASCII "M")
* Byte 1: Card type:
* 0x08 for MC16
* 0x0D for MC32
* Byte 2: Card revision
* Byte 3: Mirror of POS config register 0
* Byte 4: Mirror of POS 1
* Byte 5: Mirror of POS 2
*
* Page one contains the following data:
* Byte 0: Unused
* Byte 1-6: BIA, MSB to LSB.
*
* Note that to read the BIA, we must unmap the SIF registers
* by clearing bit 2 of CONTROL_REG0 (SIFSEL), as the data
* will reside in the same logical location. For this reason,
* _never_ read the BIA while the Eagle processor is running!
* The SIF will be completely inaccessible until the BIA operation
* is complete.
*
*/
static void madgemc_read_rom(struct net_device *dev, struct card_info *card)
{
unsigned long ioaddr;
unsigned char reg0, reg1, tmpreg0, i;
ioaddr = dev->base_addr;
reg0 = inb(ioaddr + MC_CONTROL_REG0);
reg1 = inb(ioaddr + MC_CONTROL_REG1);
/* Switch to page zero and unmap SIF */
tmpreg0 = reg0 & ~(MC_CONTROL_REG0_PAGE + MC_CONTROL_REG0_SIFSEL);
outb(tmpreg0, ioaddr + MC_CONTROL_REG0);
card->manid = inb(ioaddr + MC_ROM_MANUFACTURERID);
card->cardtype = inb(ioaddr + MC_ROM_ADAPTERID);
card->cardrev = inb(ioaddr + MC_ROM_REVISION);
/* Switch to rom page one */
outb(tmpreg0 | MC_CONTROL_REG0_PAGE, ioaddr + MC_CONTROL_REG0);
/* Read BIA */
dev->addr_len = 6;
for (i = 0; i < 6; i++)
dev->dev_addr[i] = inb(ioaddr + MC_ROM_BIA_START + i);
/* Restore original register values */
outb(reg0, ioaddr + MC_CONTROL_REG0);
outb(reg1, ioaddr + MC_CONTROL_REG1);
return;
}
static int madgemc_open(struct net_device *dev)
{
/*
* Go ahead and reinitialize the chipset again, just to
* make sure we didn't get left in a bad state.
*/
madgemc_chipset_init(dev);
tms380tr_open(dev);
return 0;
}
static int madgemc_close(struct net_device *dev)
{
tms380tr_close(dev);
madgemc_chipset_close(dev);
return 0;
}
/*
* Give some details available from /proc/mca/slotX
*/
static int madgemc_mcaproc(char *buf, int slot, void *d)
{
struct net_device *dev = (struct net_device *)d;
struct net_local *tp = dev->priv;
struct card_info *curcard = tp->tmspriv;
int len = 0;
len += sprintf(buf+len, "-------\n");
if (curcard) {
struct net_local *tp = netdev_priv(dev);
int i;
len += sprintf(buf+len, "Card Revision: %d\n", curcard->cardrev);
len += sprintf(buf+len, "RAM Size: %dkb\n", curcard->ramsize);
len += sprintf(buf+len, "Cable type: %s\n", (curcard->cabletype)?"STP/DB9":"UTP/RJ-45");
len += sprintf(buf+len, "Configured ring speed: %dMb/sec\n", (curcard->ringspeed)?16:4);
len += sprintf(buf+len, "Running ring speed: %dMb/sec\n", (tp->DataRate==SPEED_16)?16:4);
len += sprintf(buf+len, "Device: %s\n", dev->name);
len += sprintf(buf+len, "IO Port: 0x%04lx\n", dev->base_addr);
len += sprintf(buf+len, "IRQ: %d\n", dev->irq);
len += sprintf(buf+len, "Arbitration Level: %d\n", curcard->arblevel);
len += sprintf(buf+len, "Burst Mode: ");
switch(curcard->burstmode) {
case 0: len += sprintf(buf+len, "Cycle steal"); break;
case 1: len += sprintf(buf+len, "Limited burst"); break;
case 2: len += sprintf(buf+len, "Delayed release"); break;
case 3: len += sprintf(buf+len, "Immediate release"); break;
}
len += sprintf(buf+len, " (%s)\n", (curcard->fairness)?"Unfair":"Fair");
len += sprintf(buf+len, "Ring Station Address: ");
len += sprintf(buf+len, "%2.2x", dev->dev_addr[0]);
for (i = 1; i < 6; i++)
len += sprintf(buf+len, " %2.2x", dev->dev_addr[i]);
len += sprintf(buf+len, "\n");
} else
len += sprintf(buf+len, "Card not configured\n");
return len;
}
static int __devexit madgemc_remove(struct device *device)
{
struct net_device *dev = dev_get_drvdata(device);
struct net_local *tp;
struct card_info *card;
BUG_ON(!dev);
tp = dev->priv;
card = tp->tmspriv;
kfree(card);
tp->tmspriv = NULL;
unregister_netdev(dev);
release_region(dev->base_addr-MADGEMC_SIF_OFFSET, MADGEMC_IO_EXTENT);
free_irq(dev->irq, dev);
tmsdev_term(dev);
free_netdev(dev);
dev_set_drvdata(device, NULL);
return 0;
}
static short madgemc_adapter_ids[] __initdata = {
0x002d,
0x0000
};
static struct mca_driver madgemc_driver = {
.id_table = madgemc_adapter_ids,
.driver = {
.name = "madgemc",
.bus = &mca_bus_type,
.probe = madgemc_probe,
.remove = __devexit_p(madgemc_remove),
},
};
static int __init madgemc_init (void)
{
return mca_register_driver (&madgemc_driver);
}
static void __exit madgemc_exit (void)
{
mca_unregister_driver (&madgemc_driver);
}
module_init(madgemc_init);
module_exit(madgemc_exit);
MODULE_LICENSE("GPL");
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