You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
436 lines
12 KiB
436 lines
12 KiB
/*======================================================================
|
|
|
|
A PCMCIA token-ring driver for IBM-based cards
|
|
|
|
This driver supports the IBM PCMCIA Token-Ring Card.
|
|
Written by Steve Kipisz, kipisz@vnet.ibm.com or
|
|
bungy@ibm.net
|
|
|
|
Written 1995,1996.
|
|
|
|
This code is based on pcnet_cs.c from David Hinds.
|
|
|
|
V2.2.0 February 1999 - Mike Phillips phillim@amtrak.com
|
|
|
|
Linux V2.2.x presented significant changes to the underlying
|
|
ibmtr.c code. Mainly the code became a lot more organized and
|
|
modular.
|
|
|
|
This caused the old PCMCIA Token Ring driver to give up and go
|
|
home early. Instead of just patching the old code to make it
|
|
work, the PCMCIA code has been streamlined, updated and possibly
|
|
improved.
|
|
|
|
This code now only contains code required for the Card Services.
|
|
All we do here is set the card up enough so that the real ibmtr.c
|
|
driver can find it and work with it properly.
|
|
|
|
i.e. We set up the io port, irq, mmio memory and shared ram
|
|
memory. This enables ibmtr_probe in ibmtr.c to find the card and
|
|
configure it as though it was a normal ISA and/or PnP card.
|
|
|
|
CHANGES
|
|
|
|
v2.2.5 April 1999 Mike Phillips (phillim@amtrak.com)
|
|
Obscure bug fix, required changed to ibmtr.c not ibmtr_cs.c
|
|
|
|
v2.2.7 May 1999 Mike Phillips (phillim@amtrak.com)
|
|
Updated to version 2.2.7 to match the first version of the kernel
|
|
that the modification to ibmtr.c were incorporated into.
|
|
|
|
v2.2.17 July 2000 Burt Silverman (burts@us.ibm.com)
|
|
Address translation feature of PCMCIA controller is usable so
|
|
memory windows can be placed in High memory (meaning above
|
|
0xFFFFF.)
|
|
|
|
======================================================================*/
|
|
|
|
#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/module.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/trdevice.h>
|
|
#include <linux/ibmtr.h>
|
|
|
|
#include <pcmcia/cs_types.h>
|
|
#include <pcmcia/cs.h>
|
|
#include <pcmcia/cistpl.h>
|
|
#include <pcmcia/ds.h>
|
|
|
|
#include <asm/uaccess.h>
|
|
#include <asm/io.h>
|
|
#include <asm/system.h>
|
|
|
|
#define PCMCIA
|
|
#include "../tokenring/ibmtr.c"
|
|
|
|
#ifdef PCMCIA_DEBUG
|
|
static int pc_debug = PCMCIA_DEBUG;
|
|
module_param(pc_debug, int, 0);
|
|
#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
|
|
static char *version =
|
|
"ibmtr_cs.c 1.10 1996/01/06 05:19:00 (Steve Kipisz)\n"
|
|
" 2.2.7 1999/05/03 12:00:00 (Mike Phillips)\n"
|
|
" 2.4.2 2001/30/28 Midnight (Burt Silverman)\n";
|
|
#else
|
|
#define DEBUG(n, args...)
|
|
#endif
|
|
|
|
/*====================================================================*/
|
|
|
|
/* Parameters that can be set with 'insmod' */
|
|
|
|
/* MMIO base address */
|
|
static u_long mmiobase = 0xce000;
|
|
|
|
/* SRAM base address */
|
|
static u_long srambase = 0xd0000;
|
|
|
|
/* SRAM size 8,16,32,64 */
|
|
static u_long sramsize = 64;
|
|
|
|
/* Ringspeed 4,16 */
|
|
static int ringspeed = 16;
|
|
|
|
module_param(mmiobase, ulong, 0);
|
|
module_param(srambase, ulong, 0);
|
|
module_param(sramsize, ulong, 0);
|
|
module_param(ringspeed, int, 0);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/*====================================================================*/
|
|
|
|
static int ibmtr_config(struct pcmcia_device *link);
|
|
static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase);
|
|
static void ibmtr_release(struct pcmcia_device *link);
|
|
static void ibmtr_detach(struct pcmcia_device *p_dev);
|
|
|
|
/*====================================================================*/
|
|
|
|
typedef struct ibmtr_dev_t {
|
|
struct pcmcia_device *p_dev;
|
|
struct net_device *dev;
|
|
dev_node_t node;
|
|
window_handle_t sram_win_handle;
|
|
struct tok_info *ti;
|
|
} ibmtr_dev_t;
|
|
|
|
static void netdev_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
strcpy(info->driver, "ibmtr_cs");
|
|
}
|
|
|
|
static const struct ethtool_ops netdev_ethtool_ops = {
|
|
.get_drvinfo = netdev_get_drvinfo,
|
|
};
|
|
|
|
/*======================================================================
|
|
|
|
ibmtr_attach() creates an "instance" of the driver, allocating
|
|
local data structures for one device. The device is registered
|
|
with Card Services.
|
|
|
|
======================================================================*/
|
|
|
|
static int __devinit ibmtr_attach(struct pcmcia_device *link)
|
|
{
|
|
ibmtr_dev_t *info;
|
|
struct net_device *dev;
|
|
|
|
DEBUG(0, "ibmtr_attach()\n");
|
|
|
|
/* Create new token-ring device */
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL);
|
|
if (!info) return -ENOMEM;
|
|
memset(info,0,sizeof(*info));
|
|
dev = alloc_trdev(sizeof(struct tok_info));
|
|
if (!dev) {
|
|
kfree(info);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
info->p_dev = link;
|
|
link->priv = info;
|
|
info->ti = netdev_priv(dev);
|
|
|
|
link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
|
|
link->io.NumPorts1 = 4;
|
|
link->io.IOAddrLines = 16;
|
|
link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
|
|
link->irq.IRQInfo1 = IRQ_LEVEL_ID;
|
|
link->irq.Handler = &tok_interrupt;
|
|
link->conf.Attributes = CONF_ENABLE_IRQ;
|
|
link->conf.IntType = INT_MEMORY_AND_IO;
|
|
link->conf.Present = PRESENT_OPTION;
|
|
|
|
link->irq.Instance = info->dev = dev;
|
|
|
|
SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
|
|
|
|
return ibmtr_config(link);
|
|
} /* ibmtr_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 ibmtr_detach(struct pcmcia_device *link)
|
|
{
|
|
struct ibmtr_dev_t *info = link->priv;
|
|
struct net_device *dev = info->dev;
|
|
|
|
DEBUG(0, "ibmtr_detach(0x%p)\n", link);
|
|
|
|
if (link->dev_node)
|
|
unregister_netdev(dev);
|
|
|
|
{
|
|
struct tok_info *ti = netdev_priv(dev);
|
|
del_timer_sync(&(ti->tr_timer));
|
|
}
|
|
|
|
ibmtr_release(link);
|
|
|
|
free_netdev(dev);
|
|
kfree(info);
|
|
} /* ibmtr_detach */
|
|
|
|
/*======================================================================
|
|
|
|
ibmtr_config() is scheduled to run after a CARD_INSERTION event
|
|
is received, to configure the PCMCIA socket, and to make the
|
|
token-ring device available to the system.
|
|
|
|
======================================================================*/
|
|
|
|
#define CS_CHECK(fn, ret) \
|
|
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
|
|
|
|
static int __devinit ibmtr_config(struct pcmcia_device *link)
|
|
{
|
|
ibmtr_dev_t *info = link->priv;
|
|
struct net_device *dev = info->dev;
|
|
struct tok_info *ti = netdev_priv(dev);
|
|
win_req_t req;
|
|
memreq_t mem;
|
|
int i, last_ret, last_fn;
|
|
|
|
DEBUG(0, "ibmtr_config(0x%p)\n", link);
|
|
|
|
link->conf.ConfigIndex = 0x61;
|
|
|
|
/* Determine if this is PRIMARY or ALTERNATE. */
|
|
|
|
/* Try PRIMARY card at 0xA20-0xA23 */
|
|
link->io.BasePort1 = 0xA20;
|
|
i = pcmcia_request_io(link, &link->io);
|
|
if (i != CS_SUCCESS) {
|
|
/* Couldn't get 0xA20-0xA23. Try ALTERNATE at 0xA24-0xA27. */
|
|
link->io.BasePort1 = 0xA24;
|
|
CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
|
|
}
|
|
dev->base_addr = link->io.BasePort1;
|
|
|
|
CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
|
|
dev->irq = link->irq.AssignedIRQ;
|
|
ti->irq = link->irq.AssignedIRQ;
|
|
ti->global_int_enable=GLOBAL_INT_ENABLE+((dev->irq==9) ? 2 : dev->irq);
|
|
|
|
/* Allocate the MMIO memory window */
|
|
req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE;
|
|
req.Attributes |= WIN_USE_WAIT;
|
|
req.Base = 0;
|
|
req.Size = 0x2000;
|
|
req.AccessSpeed = 250;
|
|
CS_CHECK(RequestWindow, pcmcia_request_window(&link, &req, &link->win));
|
|
|
|
mem.CardOffset = mmiobase;
|
|
mem.Page = 0;
|
|
CS_CHECK(MapMemPage, pcmcia_map_mem_page(link->win, &mem));
|
|
ti->mmio = ioremap(req.Base, req.Size);
|
|
|
|
/* Allocate the SRAM memory window */
|
|
req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE;
|
|
req.Attributes |= WIN_USE_WAIT;
|
|
req.Base = 0;
|
|
req.Size = sramsize * 1024;
|
|
req.AccessSpeed = 250;
|
|
CS_CHECK(RequestWindow, pcmcia_request_window(&link, &req, &info->sram_win_handle));
|
|
|
|
mem.CardOffset = srambase;
|
|
mem.Page = 0;
|
|
CS_CHECK(MapMemPage, pcmcia_map_mem_page(info->sram_win_handle, &mem));
|
|
|
|
ti->sram_base = mem.CardOffset >> 12;
|
|
ti->sram_virt = ioremap(req.Base, req.Size);
|
|
ti->sram_phys = req.Base;
|
|
|
|
CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
|
|
|
|
/* Set up the Token-Ring Controller Configuration Register and
|
|
turn on the card. Check the "Local Area Network Credit Card
|
|
Adapters Technical Reference" SC30-3585 for this info. */
|
|
ibmtr_hw_setup(dev, mmiobase);
|
|
|
|
link->dev_node = &info->node;
|
|
SET_NETDEV_DEV(dev, &handle_to_dev(link));
|
|
|
|
i = ibmtr_probe_card(dev);
|
|
if (i != 0) {
|
|
printk(KERN_NOTICE "ibmtr_cs: register_netdev() failed\n");
|
|
link->dev_node = NULL;
|
|
goto failed;
|
|
}
|
|
|
|
strcpy(info->node.dev_name, dev->name);
|
|
|
|
printk(KERN_INFO "%s: port %#3lx, irq %d,",
|
|
dev->name, dev->base_addr, dev->irq);
|
|
printk (" mmio %#5lx,", (u_long)ti->mmio);
|
|
printk (" sram %#5lx,", (u_long)ti->sram_base << 12);
|
|
printk ("\n" KERN_INFO " hwaddr=");
|
|
for (i = 0; i < TR_ALEN; i++)
|
|
printk("%02X", dev->dev_addr[i]);
|
|
printk("\n");
|
|
return 0;
|
|
|
|
cs_failed:
|
|
cs_error(link, last_fn, last_ret);
|
|
failed:
|
|
ibmtr_release(link);
|
|
return -ENODEV;
|
|
} /* ibmtr_config */
|
|
|
|
/*======================================================================
|
|
|
|
After a card is removed, ibmtr_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 ibmtr_release(struct pcmcia_device *link)
|
|
{
|
|
ibmtr_dev_t *info = link->priv;
|
|
struct net_device *dev = info->dev;
|
|
|
|
DEBUG(0, "ibmtr_release(0x%p)\n", link);
|
|
|
|
if (link->win) {
|
|
struct tok_info *ti = netdev_priv(dev);
|
|
iounmap(ti->mmio);
|
|
pcmcia_release_window(info->sram_win_handle);
|
|
}
|
|
pcmcia_disable_device(link);
|
|
}
|
|
|
|
static int ibmtr_suspend(struct pcmcia_device *link)
|
|
{
|
|
ibmtr_dev_t *info = link->priv;
|
|
struct net_device *dev = info->dev;
|
|
|
|
if (link->open)
|
|
netif_device_detach(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ibmtr_resume(struct pcmcia_device *link)
|
|
{
|
|
ibmtr_dev_t *info = link->priv;
|
|
struct net_device *dev = info->dev;
|
|
|
|
if (link->open) {
|
|
ibmtr_probe(dev); /* really? */
|
|
netif_device_attach(dev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*====================================================================*/
|
|
|
|
static void ibmtr_hw_setup(struct net_device *dev, u_int mmiobase)
|
|
{
|
|
int i;
|
|
|
|
/* Bizarre IBM behavior, there are 16 bits of information we
|
|
need to set, but the card only allows us to send 4 bits at a
|
|
time. For each byte sent to base_addr, bits 7-4 tell the
|
|
card which part of the 16 bits we are setting, bits 3-0 contain
|
|
the actual information */
|
|
|
|
/* First nibble provides 4 bits of mmio */
|
|
i = (mmiobase >> 16) & 0x0F;
|
|
outb(i, dev->base_addr);
|
|
|
|
/* Second nibble provides 3 bits of mmio */
|
|
i = 0x10 | ((mmiobase >> 12) & 0x0E);
|
|
outb(i, dev->base_addr);
|
|
|
|
/* Third nibble, hard-coded values */
|
|
i = 0x26;
|
|
outb(i, dev->base_addr);
|
|
|
|
/* Fourth nibble sets shared ram page size */
|
|
|
|
/* 8 = 00, 16 = 01, 32 = 10, 64 = 11 */
|
|
i = (sramsize >> 4) & 0x07;
|
|
i = ((i == 4) ? 3 : i) << 2;
|
|
i |= 0x30;
|
|
|
|
if (ringspeed == 16)
|
|
i |= 2;
|
|
if (dev->base_addr == 0xA24)
|
|
i |= 1;
|
|
outb(i, dev->base_addr);
|
|
|
|
/* 0x40 will release the card for use */
|
|
outb(0x40, dev->base_addr);
|
|
|
|
return;
|
|
}
|
|
|
|
static struct pcmcia_device_id ibmtr_ids[] = {
|
|
PCMCIA_DEVICE_PROD_ID12("3Com", "TokenLink Velocity PC Card", 0x41240e5b, 0x82c3734e),
|
|
PCMCIA_DEVICE_PROD_ID12("IBM", "TOKEN RING", 0xb569a6e5, 0xbf8eed47),
|
|
PCMCIA_DEVICE_NULL,
|
|
};
|
|
MODULE_DEVICE_TABLE(pcmcia, ibmtr_ids);
|
|
|
|
static struct pcmcia_driver ibmtr_cs_driver = {
|
|
.owner = THIS_MODULE,
|
|
.drv = {
|
|
.name = "ibmtr_cs",
|
|
},
|
|
.probe = ibmtr_attach,
|
|
.remove = ibmtr_detach,
|
|
.id_table = ibmtr_ids,
|
|
.suspend = ibmtr_suspend,
|
|
.resume = ibmtr_resume,
|
|
};
|
|
|
|
static int __init init_ibmtr_cs(void)
|
|
{
|
|
return pcmcia_register_driver(&ibmtr_cs_driver);
|
|
}
|
|
|
|
static void __exit exit_ibmtr_cs(void)
|
|
{
|
|
pcmcia_unregister_driver(&ibmtr_cs_driver);
|
|
}
|
|
|
|
module_init(init_ibmtr_cs);
|
|
module_exit(exit_ibmtr_cs);
|
|
|