/*
|
* SDLA An implementation of a driver for the Sangoma S502/S508 series
|
* multi-protocol PC interface card. Initial offering is with
|
* the DLCI driver, providing Frame Relay support for linux.
|
*
|
* Global definitions for the Frame relay interface.
|
*
|
* Version: @(#)sdla.c 0.30 12 Sep 1996
|
*
|
* Credits: Sangoma Technologies, for the use of 2 cards for an extended
|
* period of time.
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* David Mandelstam <dm@sangoma.com> for getting me started on
|
* this project, and incentive to complete it.
|
* Gene Kozen <74604.152@compuserve.com> for providing me with
|
* important information about the cards.
|
*
|
* Author: Mike McLagan <mike.mclagan@linux.org>
|
*
|
* Changes:
|
* 0.15 Mike McLagan Improved error handling, packet dropping
|
* 0.20 Mike McLagan New transmit/receive flags for config
|
* If in FR mode, don't accept packets from
|
* non DLCI devices.
|
* 0.25 Mike McLagan Fixed problem with rejecting packets
|
* from non DLCI devices.
|
* 0.30 Mike McLagan Fixed kernel panic when used with modified
|
* ifconfig
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*
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* This program 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.
|
*/
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/fcntl.h>
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#include <linux/interrupt.h>
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#include <linux/ptrace.h>
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#include <linux/ioport.h>
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#include <linux/in.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/if_arp.h>
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#include <linux/if_frad.h>
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#include <linux/sdla.h>
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#include <linux/bitops.h>
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|
#include <asm/io.h>
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#include <asm/dma.h>
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#include <linux/uaccess.h>
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|
static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
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|
static unsigned int valid_port[] = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390};
|
|
static unsigned int valid_mem[] = {
|
0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
|
0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
|
0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
|
0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
|
0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000};
|
|
static DEFINE_SPINLOCK(sdla_lock);
|
|
/*********************************************************
|
*
|
* these are the core routines that access the card itself
|
*
|
*********************************************************/
|
|
#define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW)
|
|
static void __sdla_read(struct net_device *dev, int addr, void *buf, short len)
|
{
|
char *temp;
|
const void *base;
|
int offset, bytes;
|
|
temp = buf;
|
while(len)
|
{
|
offset = addr & SDLA_ADDR_MASK;
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bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
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base = (const void *) (dev->mem_start + offset);
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|
SDLA_WINDOW(dev, addr);
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memcpy(temp, base, bytes);
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|
addr += bytes;
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temp += bytes;
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len -= bytes;
|
}
|
}
|
|
static void sdla_read(struct net_device *dev, int addr, void *buf, short len)
|
{
|
unsigned long flags;
|
spin_lock_irqsave(&sdla_lock, flags);
|
__sdla_read(dev, addr, buf, len);
|
spin_unlock_irqrestore(&sdla_lock, flags);
|
}
|
|
static void __sdla_write(struct net_device *dev, int addr,
|
const void *buf, short len)
|
{
|
const char *temp;
|
void *base;
|
int offset, bytes;
|
|
temp = buf;
|
while(len)
|
{
|
offset = addr & SDLA_ADDR_MASK;
|
bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
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base = (void *) (dev->mem_start + offset);
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|
SDLA_WINDOW(dev, addr);
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memcpy(base, temp, bytes);
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|
addr += bytes;
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temp += bytes;
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len -= bytes;
|
}
|
}
|
|
static void sdla_write(struct net_device *dev, int addr,
|
const void *buf, short len)
|
{
|
unsigned long flags;
|
|
spin_lock_irqsave(&sdla_lock, flags);
|
__sdla_write(dev, addr, buf, len);
|
spin_unlock_irqrestore(&sdla_lock, flags);
|
}
|
|
|
static void sdla_clear(struct net_device *dev)
|
{
|
unsigned long flags;
|
char *base;
|
int len, addr, bytes;
|
|
len = 65536;
|
addr = 0;
|
bytes = SDLA_WINDOW_SIZE;
|
base = (void *) dev->mem_start;
|
|
spin_lock_irqsave(&sdla_lock, flags);
|
while(len)
|
{
|
SDLA_WINDOW(dev, addr);
|
memset(base, 0, bytes);
|
|
addr += bytes;
|
len -= bytes;
|
}
|
spin_unlock_irqrestore(&sdla_lock, flags);
|
|
}
|
|
static char sdla_byte(struct net_device *dev, int addr)
|
{
|
unsigned long flags;
|
char byte, *temp;
|
|
temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK));
|
|
spin_lock_irqsave(&sdla_lock, flags);
|
SDLA_WINDOW(dev, addr);
|
byte = *temp;
|
spin_unlock_irqrestore(&sdla_lock, flags);
|
|
return byte;
|
}
|
|
static void sdla_stop(struct net_device *dev)
|
{
|
struct frad_local *flp;
|
|
flp = netdev_priv(dev);
|
switch(flp->type)
|
{
|
case SDLA_S502A:
|
outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
|
flp->state = SDLA_HALT;
|
break;
|
case SDLA_S502E:
|
outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
|
outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
|
flp->state = SDLA_S502E_ENABLE;
|
break;
|
case SDLA_S507:
|
flp->state &= ~SDLA_CPUEN;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
break;
|
case SDLA_S508:
|
flp->state &= ~SDLA_CPUEN;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
break;
|
}
|
}
|
|
static void sdla_start(struct net_device *dev)
|
{
|
struct frad_local *flp;
|
|
flp = netdev_priv(dev);
|
switch(flp->type)
|
{
|
case SDLA_S502A:
|
outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL);
|
outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
|
flp->state = SDLA_S502A_START;
|
break;
|
case SDLA_S502E:
|
outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL);
|
outb(0x00, dev->base_addr + SDLA_REG_CONTROL);
|
flp->state = 0;
|
break;
|
case SDLA_S507:
|
flp->state |= SDLA_CPUEN;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
break;
|
case SDLA_S508:
|
flp->state |= SDLA_CPUEN;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
break;
|
}
|
}
|
|
/****************************************************
|
*
|
* this is used for the S502A/E cards to determine
|
* the speed of the onboard CPU. Calibration is
|
* necessary for the Frame Relay code uploaded
|
* later. Incorrect results cause timing problems
|
* with link checks & status messages
|
*
|
***************************************************/
|
|
static int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2)
|
{
|
unsigned long start, done, now;
|
char resp, *temp;
|
|
start = now = jiffies;
|
done = jiffies + jiffs;
|
|
temp = (void *)dev->mem_start;
|
temp += z80_addr & SDLA_ADDR_MASK;
|
|
resp = ~resp1;
|
while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2)))
|
{
|
if (jiffies != now)
|
{
|
SDLA_WINDOW(dev, z80_addr);
|
now = jiffies;
|
resp = *temp;
|
}
|
}
|
return time_before(jiffies, done) ? jiffies - start : -1;
|
}
|
|
/* constants for Z80 CPU speed */
|
#define Z80_READY '1' /* Z80 is ready to begin */
|
#define LOADER_READY '2' /* driver is ready to begin */
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#define Z80_SCC_OK '3' /* SCC is on board */
|
#define Z80_SCC_BAD '4' /* SCC was not found */
|
|
static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr)
|
{
|
int jiffs;
|
char data;
|
|
sdla_start(dev);
|
if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0)
|
return -EIO;
|
|
data = LOADER_READY;
|
sdla_write(dev, 0, &data, 1);
|
|
if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0)
|
return -EIO;
|
|
sdla_stop(dev);
|
sdla_read(dev, 0, &data, 1);
|
|
if (data == Z80_SCC_BAD)
|
{
|
printk("%s: SCC bad\n", dev->name);
|
return -EIO;
|
}
|
|
if (data != Z80_SCC_OK)
|
return -EINVAL;
|
|
if (jiffs < 165)
|
ifr->ifr_mtu = SDLA_CPU_16M;
|
else if (jiffs < 220)
|
ifr->ifr_mtu = SDLA_CPU_10M;
|
else if (jiffs < 258)
|
ifr->ifr_mtu = SDLA_CPU_8M;
|
else if (jiffs < 357)
|
ifr->ifr_mtu = SDLA_CPU_7M;
|
else if (jiffs < 467)
|
ifr->ifr_mtu = SDLA_CPU_5M;
|
else
|
ifr->ifr_mtu = SDLA_CPU_3M;
|
|
return 0;
|
}
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|
/************************************************
|
*
|
* Direct interaction with the Frame Relay code
|
* starts here.
|
*
|
************************************************/
|
|
struct _dlci_stat
|
{
|
short dlci;
|
char flags;
|
} __packed;
|
|
struct _frad_stat
|
{
|
char flags;
|
struct _dlci_stat dlcis[SDLA_MAX_DLCI];
|
};
|
|
static void sdla_errors(struct net_device *dev, int cmd, int dlci, int ret, int len, void *data)
|
{
|
struct _dlci_stat *pstatus;
|
short *pdlci;
|
int i;
|
char *state, line[30];
|
|
switch (ret)
|
{
|
case SDLA_RET_MODEM:
|
state = data;
|
if (*state & SDLA_MODEM_DCD_LOW)
|
netdev_info(dev, "Modem DCD unexpectedly low!\n");
|
if (*state & SDLA_MODEM_CTS_LOW)
|
netdev_info(dev, "Modem CTS unexpectedly low!\n");
|
/* I should probably do something about this! */
|
break;
|
|
case SDLA_RET_CHANNEL_OFF:
|
netdev_info(dev, "Channel became inoperative!\n");
|
/* same here */
|
break;
|
|
case SDLA_RET_CHANNEL_ON:
|
netdev_info(dev, "Channel became operative!\n");
|
/* same here */
|
break;
|
|
case SDLA_RET_DLCI_STATUS:
|
netdev_info(dev, "Status change reported by Access Node\n");
|
len /= sizeof(struct _dlci_stat);
|
for(pstatus = data, i=0;i < len;i++,pstatus++)
|
{
|
if (pstatus->flags & SDLA_DLCI_NEW)
|
state = "new";
|
else if (pstatus->flags & SDLA_DLCI_DELETED)
|
state = "deleted";
|
else if (pstatus->flags & SDLA_DLCI_ACTIVE)
|
state = "active";
|
else
|
{
|
sprintf(line, "unknown status: %02X", pstatus->flags);
|
state = line;
|
}
|
netdev_info(dev, "DLCI %i: %s\n",
|
pstatus->dlci, state);
|
/* same here */
|
}
|
break;
|
|
case SDLA_RET_DLCI_UNKNOWN:
|
netdev_info(dev, "Received unknown DLCIs:");
|
len /= sizeof(short);
|
for(pdlci = data,i=0;i < len;i++,pdlci++)
|
pr_cont(" %i", *pdlci);
|
pr_cont("\n");
|
break;
|
|
case SDLA_RET_TIMEOUT:
|
netdev_err(dev, "Command timed out!\n");
|
break;
|
|
case SDLA_RET_BUF_OVERSIZE:
|
netdev_info(dev, "Bc/CIR overflow, acceptable size is %i\n",
|
len);
|
break;
|
|
case SDLA_RET_BUF_TOO_BIG:
|
netdev_info(dev, "Buffer size over specified max of %i\n",
|
len);
|
break;
|
|
case SDLA_RET_CHANNEL_INACTIVE:
|
case SDLA_RET_DLCI_INACTIVE:
|
case SDLA_RET_CIR_OVERFLOW:
|
case SDLA_RET_NO_BUFS:
|
if (cmd == SDLA_INFORMATION_WRITE)
|
break;
|
|
default:
|
netdev_dbg(dev, "Cmd 0x%02X generated return code 0x%02X\n",
|
cmd, ret);
|
/* Further processing could be done here */
|
break;
|
}
|
}
|
|
static int sdla_cmd(struct net_device *dev, int cmd, short dlci, short flags,
|
void *inbuf, short inlen, void *outbuf, short *outlen)
|
{
|
static struct _frad_stat status;
|
struct frad_local *flp;
|
struct sdla_cmd *cmd_buf;
|
unsigned long pflags;
|
unsigned long jiffs;
|
int ret, waiting, len;
|
long window;
|
|
flp = netdev_priv(dev);
|
window = flp->type == SDLA_S508 ? SDLA_508_CMD_BUF : SDLA_502_CMD_BUF;
|
cmd_buf = (struct sdla_cmd *)(dev->mem_start + (window & SDLA_ADDR_MASK));
|
ret = 0;
|
len = 0;
|
jiffs = jiffies + HZ; /* 1 second is plenty */
|
|
spin_lock_irqsave(&sdla_lock, pflags);
|
SDLA_WINDOW(dev, window);
|
cmd_buf->cmd = cmd;
|
cmd_buf->dlci = dlci;
|
cmd_buf->flags = flags;
|
|
if (inbuf)
|
memcpy(cmd_buf->data, inbuf, inlen);
|
|
cmd_buf->length = inlen;
|
|
cmd_buf->opp_flag = 1;
|
spin_unlock_irqrestore(&sdla_lock, pflags);
|
|
waiting = 1;
|
len = 0;
|
while (waiting && time_before_eq(jiffies, jiffs))
|
{
|
if (waiting++ % 3)
|
{
|
spin_lock_irqsave(&sdla_lock, pflags);
|
SDLA_WINDOW(dev, window);
|
waiting = ((volatile int)(cmd_buf->opp_flag));
|
spin_unlock_irqrestore(&sdla_lock, pflags);
|
}
|
}
|
|
if (!waiting)
|
{
|
|
spin_lock_irqsave(&sdla_lock, pflags);
|
SDLA_WINDOW(dev, window);
|
ret = cmd_buf->retval;
|
len = cmd_buf->length;
|
if (outbuf && outlen)
|
{
|
*outlen = *outlen >= len ? len : *outlen;
|
|
if (*outlen)
|
memcpy(outbuf, cmd_buf->data, *outlen);
|
}
|
|
/* This is a local copy that's used for error handling */
|
if (ret)
|
memcpy(&status, cmd_buf->data, len > sizeof(status) ? sizeof(status) : len);
|
|
spin_unlock_irqrestore(&sdla_lock, pflags);
|
}
|
else
|
ret = SDLA_RET_TIMEOUT;
|
|
if (ret != SDLA_RET_OK)
|
sdla_errors(dev, cmd, dlci, ret, len, &status);
|
|
return ret;
|
}
|
|
/***********************************************
|
*
|
* these functions are called by the DLCI driver
|
*
|
***********************************************/
|
|
static int sdla_reconfig(struct net_device *dev);
|
|
static int sdla_activate(struct net_device *slave, struct net_device *master)
|
{
|
struct frad_local *flp;
|
int i;
|
|
flp = netdev_priv(slave);
|
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->master[i] == master)
|
break;
|
|
if (i == CONFIG_DLCI_MAX)
|
return -ENODEV;
|
|
flp->dlci[i] = abs(flp->dlci[i]);
|
|
if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
|
sdla_cmd(slave, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
|
|
return 0;
|
}
|
|
static int sdla_deactivate(struct net_device *slave, struct net_device *master)
|
{
|
struct frad_local *flp;
|
int i;
|
|
flp = netdev_priv(slave);
|
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->master[i] == master)
|
break;
|
|
if (i == CONFIG_DLCI_MAX)
|
return -ENODEV;
|
|
flp->dlci[i] = -abs(flp->dlci[i]);
|
|
if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
|
sdla_cmd(slave, SDLA_DEACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
|
|
return 0;
|
}
|
|
static int sdla_assoc(struct net_device *slave, struct net_device *master)
|
{
|
struct frad_local *flp;
|
int i;
|
|
if (master->type != ARPHRD_DLCI)
|
return -EINVAL;
|
|
flp = netdev_priv(slave);
|
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
{
|
if (!flp->master[i])
|
break;
|
if (abs(flp->dlci[i]) == *(short *)(master->dev_addr))
|
return -EADDRINUSE;
|
}
|
|
if (i == CONFIG_DLCI_MAX)
|
return -EMLINK; /* #### Alan: Comments on this ?? */
|
|
|
flp->master[i] = master;
|
flp->dlci[i] = -*(short *)(master->dev_addr);
|
master->mtu = slave->mtu;
|
|
if (netif_running(slave)) {
|
if (flp->config.station == FRAD_STATION_CPE)
|
sdla_reconfig(slave);
|
else
|
sdla_cmd(slave, SDLA_ADD_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
|
}
|
|
return 0;
|
}
|
|
static int sdla_deassoc(struct net_device *slave, struct net_device *master)
|
{
|
struct frad_local *flp;
|
int i;
|
|
flp = netdev_priv(slave);
|
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->master[i] == master)
|
break;
|
|
if (i == CONFIG_DLCI_MAX)
|
return -ENODEV;
|
|
flp->master[i] = NULL;
|
flp->dlci[i] = 0;
|
|
|
if (netif_running(slave)) {
|
if (flp->config.station == FRAD_STATION_CPE)
|
sdla_reconfig(slave);
|
else
|
sdla_cmd(slave, SDLA_DELETE_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
|
}
|
|
return 0;
|
}
|
|
static int sdla_dlci_conf(struct net_device *slave, struct net_device *master, int get)
|
{
|
struct frad_local *flp;
|
struct dlci_local *dlp;
|
int i;
|
short len, ret;
|
|
flp = netdev_priv(slave);
|
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->master[i] == master)
|
break;
|
|
if (i == CONFIG_DLCI_MAX)
|
return -ENODEV;
|
|
dlp = netdev_priv(master);
|
|
ret = SDLA_RET_OK;
|
len = sizeof(struct dlci_conf);
|
if (netif_running(slave)) {
|
if (get)
|
ret = sdla_cmd(slave, SDLA_READ_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
|
NULL, 0, &dlp->config, &len);
|
else
|
ret = sdla_cmd(slave, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,
|
&dlp->config, sizeof(struct dlci_conf) - 4 * sizeof(short), NULL, NULL);
|
}
|
|
return ret == SDLA_RET_OK ? 0 : -EIO;
|
}
|
|
/**************************
|
*
|
* now for the Linux driver
|
*
|
**************************/
|
|
/* NOTE: the DLCI driver deals with freeing the SKB!! */
|
static netdev_tx_t sdla_transmit(struct sk_buff *skb,
|
struct net_device *dev)
|
{
|
struct frad_local *flp;
|
int ret, addr, accept, i;
|
short size;
|
unsigned long flags;
|
struct buf_entry *pbuf;
|
|
flp = netdev_priv(dev);
|
ret = 0;
|
accept = 1;
|
|
netif_stop_queue(dev);
|
|
/*
|
* stupid GateD insists on setting up the multicast router thru us
|
* and we're ill equipped to handle a non Frame Relay packet at this
|
* time!
|
*/
|
|
accept = 1;
|
switch (dev->type)
|
{
|
case ARPHRD_FRAD:
|
if (skb->dev->type != ARPHRD_DLCI)
|
{
|
netdev_warn(dev, "Non DLCI device, type %i, tried to send on FRAD module\n",
|
skb->dev->type);
|
accept = 0;
|
}
|
break;
|
default:
|
netdev_warn(dev, "unknown firmware type 0x%04X\n",
|
dev->type);
|
accept = 0;
|
break;
|
}
|
if (accept)
|
{
|
/* this is frame specific, but till there's a PPP module, it's the default */
|
switch (flp->type)
|
{
|
case SDLA_S502A:
|
case SDLA_S502E:
|
ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
|
break;
|
case SDLA_S508:
|
size = sizeof(addr);
|
ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
|
if (ret == SDLA_RET_OK)
|
{
|
|
spin_lock_irqsave(&sdla_lock, flags);
|
SDLA_WINDOW(dev, addr);
|
pbuf = (void *)(dev->mem_start + (addr & SDLA_ADDR_MASK));
|
__sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
|
SDLA_WINDOW(dev, addr);
|
pbuf->opp_flag = 1;
|
spin_unlock_irqrestore(&sdla_lock, flags);
|
}
|
break;
|
}
|
|
switch (ret)
|
{
|
case SDLA_RET_OK:
|
dev->stats.tx_packets++;
|
break;
|
|
case SDLA_RET_CIR_OVERFLOW:
|
case SDLA_RET_BUF_OVERSIZE:
|
case SDLA_RET_NO_BUFS:
|
dev->stats.tx_dropped++;
|
break;
|
|
default:
|
dev->stats.tx_errors++;
|
break;
|
}
|
}
|
netif_wake_queue(dev);
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
{
|
if(flp->master[i]!=NULL)
|
netif_wake_queue(flp->master[i]);
|
}
|
|
dev_kfree_skb(skb);
|
return NETDEV_TX_OK;
|
}
|
|
static void sdla_receive(struct net_device *dev)
|
{
|
struct net_device *master;
|
struct frad_local *flp;
|
struct dlci_local *dlp;
|
struct sk_buff *skb;
|
|
struct sdla_cmd *cmd;
|
struct buf_info *pbufi;
|
struct buf_entry *pbuf;
|
|
unsigned long flags;
|
int i=0, received, success, addr, buf_base, buf_top;
|
short dlci, len, len2, split;
|
|
flp = netdev_priv(dev);
|
success = 1;
|
received = addr = buf_top = buf_base = 0;
|
len = dlci = 0;
|
skb = NULL;
|
master = NULL;
|
cmd = NULL;
|
pbufi = NULL;
|
pbuf = NULL;
|
|
spin_lock_irqsave(&sdla_lock, flags);
|
|
switch (flp->type)
|
{
|
case SDLA_S502A:
|
case SDLA_S502E:
|
cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
|
SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
|
success = cmd->opp_flag;
|
if (!success)
|
break;
|
|
dlci = cmd->dlci;
|
len = cmd->length;
|
break;
|
|
case SDLA_S508:
|
pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
|
SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
|
pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
|
success = pbuf->opp_flag;
|
if (!success)
|
break;
|
|
buf_top = pbufi->buf_top;
|
buf_base = pbufi->buf_base;
|
dlci = pbuf->dlci;
|
len = pbuf->length;
|
addr = pbuf->buf_addr;
|
break;
|
}
|
|
/* common code, find the DLCI and get the SKB */
|
if (success)
|
{
|
for (i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->dlci[i] == dlci)
|
break;
|
|
if (i == CONFIG_DLCI_MAX)
|
{
|
netdev_notice(dev, "Received packet from invalid DLCI %i, ignoring\n",
|
dlci);
|
dev->stats.rx_errors++;
|
success = 0;
|
}
|
}
|
|
if (success)
|
{
|
master = flp->master[i];
|
skb = dev_alloc_skb(len + sizeof(struct frhdr));
|
if (skb == NULL)
|
{
|
netdev_notice(dev, "Memory squeeze, dropping packet\n");
|
dev->stats.rx_dropped++;
|
success = 0;
|
}
|
else
|
skb_reserve(skb, sizeof(struct frhdr));
|
}
|
|
/* pick up the data */
|
switch (flp->type)
|
{
|
case SDLA_S502A:
|
case SDLA_S502E:
|
if (success)
|
__sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
|
|
SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
|
cmd->opp_flag = 0;
|
break;
|
|
case SDLA_S508:
|
if (success)
|
{
|
/* is this buffer split off the end of the internal ring buffer */
|
split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
|
len2 = len - split;
|
|
__sdla_read(dev, addr, skb_put(skb, len2), len2);
|
if (split)
|
__sdla_read(dev, buf_base, skb_put(skb, split), split);
|
}
|
|
/* increment the buffer we're looking at */
|
SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
|
flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
|
pbuf->opp_flag = 0;
|
break;
|
}
|
|
if (success)
|
{
|
dev->stats.rx_packets++;
|
dlp = netdev_priv(master);
|
(*dlp->receive)(skb, master);
|
}
|
|
spin_unlock_irqrestore(&sdla_lock, flags);
|
}
|
|
static irqreturn_t sdla_isr(int dummy, void *dev_id)
|
{
|
struct net_device *dev;
|
struct frad_local *flp;
|
char byte;
|
|
dev = dev_id;
|
|
flp = netdev_priv(dev);
|
|
if (!flp->initialized)
|
{
|
netdev_warn(dev, "irq %d for uninitialized device\n", dev->irq);
|
return IRQ_NONE;
|
}
|
|
byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
|
switch (byte)
|
{
|
case SDLA_INTR_RX:
|
sdla_receive(dev);
|
break;
|
|
/* the command will get an error return, which is processed above */
|
case SDLA_INTR_MODEM:
|
case SDLA_INTR_STATUS:
|
sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
|
break;
|
|
case SDLA_INTR_TX:
|
case SDLA_INTR_COMPLETE:
|
case SDLA_INTR_TIMER:
|
netdev_warn(dev, "invalid irq flag 0x%02X\n", byte);
|
break;
|
}
|
|
/* the S502E requires a manual acknowledgement of the interrupt */
|
if (flp->type == SDLA_S502E)
|
{
|
flp->state &= ~SDLA_S502E_INTACK;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
flp->state |= SDLA_S502E_INTACK;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
}
|
|
/* this clears the byte, informing the Z80 we're done */
|
byte = 0;
|
sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
|
return IRQ_HANDLED;
|
}
|
|
static void sdla_poll(struct timer_list *t)
|
{
|
struct frad_local *flp = from_timer(flp, t, timer);
|
struct net_device *dev = flp->dev;
|
|
if (sdla_byte(dev, SDLA_502_RCV_BUF))
|
sdla_receive(dev);
|
|
flp->timer.expires = 1;
|
add_timer(&flp->timer);
|
}
|
|
static int sdla_close(struct net_device *dev)
|
{
|
struct frad_local *flp;
|
struct intr_info intr;
|
int len, i;
|
short dlcis[CONFIG_DLCI_MAX];
|
|
flp = netdev_priv(dev);
|
|
len = 0;
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->dlci[i])
|
dlcis[len++] = abs(flp->dlci[i]);
|
len *= 2;
|
|
if (flp->config.station == FRAD_STATION_NODE)
|
{
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->dlci[i] > 0)
|
sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL);
|
sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL);
|
}
|
|
memset(&intr, 0, sizeof(intr));
|
/* let's start up the reception */
|
switch(flp->type)
|
{
|
case SDLA_S502A:
|
del_timer(&flp->timer);
|
break;
|
|
case SDLA_S502E:
|
sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
|
flp->state &= ~SDLA_S502E_INTACK;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
break;
|
|
case SDLA_S507:
|
break;
|
|
case SDLA_S508:
|
sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
|
flp->state &= ~SDLA_S508_INTEN;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
break;
|
}
|
|
sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
|
|
netif_stop_queue(dev);
|
|
return 0;
|
}
|
|
struct conf_data {
|
struct frad_conf config;
|
short dlci[CONFIG_DLCI_MAX];
|
};
|
|
static int sdla_open(struct net_device *dev)
|
{
|
struct frad_local *flp;
|
struct dlci_local *dlp;
|
struct conf_data data;
|
struct intr_info intr;
|
int len, i;
|
char byte;
|
|
flp = netdev_priv(dev);
|
|
if (!flp->initialized)
|
return -EPERM;
|
|
if (!flp->configured)
|
return -EPERM;
|
|
/* time to send in the configuration */
|
len = 0;
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->dlci[i])
|
data.dlci[len++] = abs(flp->dlci[i]);
|
len *= 2;
|
|
memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
|
len += sizeof(struct frad_conf);
|
|
sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
|
sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
|
|
if (flp->type == SDLA_S508)
|
flp->buffer = 0;
|
|
sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
|
|
/* let's start up the reception */
|
memset(&intr, 0, sizeof(intr));
|
switch(flp->type)
|
{
|
case SDLA_S502A:
|
flp->timer.expires = 1;
|
add_timer(&flp->timer);
|
break;
|
|
case SDLA_S502E:
|
flp->state |= SDLA_S502E_ENABLE;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
flp->state |= SDLA_S502E_INTACK;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
byte = 0;
|
sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
|
intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
|
sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
|
break;
|
|
case SDLA_S507:
|
break;
|
|
case SDLA_S508:
|
flp->state |= SDLA_S508_INTEN;
|
outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
|
byte = 0;
|
sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte));
|
intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
|
intr.irq = dev->irq;
|
sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
|
break;
|
}
|
|
if (flp->config.station == FRAD_STATION_CPE)
|
{
|
byte = SDLA_ICS_STATUS_ENQ;
|
sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL);
|
}
|
else
|
{
|
sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL);
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->dlci[i] > 0)
|
sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL);
|
}
|
|
/* configure any specific DLCI settings */
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->dlci[i])
|
{
|
dlp = netdev_priv(flp->master[i]);
|
if (dlp->configured)
|
sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
|
}
|
|
netif_start_queue(dev);
|
|
return 0;
|
}
|
|
static int sdla_config(struct net_device *dev, struct frad_conf __user *conf, int get)
|
{
|
struct frad_local *flp;
|
struct conf_data data;
|
int i;
|
short size;
|
|
if (dev->type == 0xFFFF)
|
return -EUNATCH;
|
|
flp = netdev_priv(dev);
|
|
if (!get)
|
{
|
if (netif_running(dev))
|
return -EBUSY;
|
|
if(copy_from_user(&data.config, conf, sizeof(struct frad_conf)))
|
return -EFAULT;
|
|
if (data.config.station & ~FRAD_STATION_NODE)
|
return -EINVAL;
|
|
if (data.config.flags & ~FRAD_VALID_FLAGS)
|
return -EINVAL;
|
|
if ((data.config.kbaud < 0) ||
|
((data.config.kbaud > 128) && (flp->type != SDLA_S508)))
|
return -EINVAL;
|
|
if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232))
|
return -EINVAL;
|
|
if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU))
|
return -EINVAL;
|
|
if ((data.config.T391 < 5) || (data.config.T391 > 30))
|
return -EINVAL;
|
|
if ((data.config.T392 < 5) || (data.config.T392 > 30))
|
return -EINVAL;
|
|
if ((data.config.N391 < 1) || (data.config.N391 > 255))
|
return -EINVAL;
|
|
if ((data.config.N392 < 1) || (data.config.N392 > 10))
|
return -EINVAL;
|
|
if ((data.config.N393 < 1) || (data.config.N393 > 10))
|
return -EINVAL;
|
|
memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
|
flp->config.flags |= SDLA_DIRECT_RECV;
|
|
if (flp->type == SDLA_S508)
|
flp->config.flags |= SDLA_TX70_RX30;
|
|
if (dev->mtu != flp->config.mtu)
|
{
|
/* this is required to change the MTU */
|
dev->mtu = flp->config.mtu;
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->master[i])
|
flp->master[i]->mtu = flp->config.mtu;
|
}
|
|
flp->config.mtu += sizeof(struct frhdr);
|
|
/* off to the races! */
|
if (!flp->configured)
|
sdla_start(dev);
|
|
flp->configured = 1;
|
}
|
else
|
{
|
/* no sense reading if the CPU isn't started */
|
if (netif_running(dev))
|
{
|
size = sizeof(data);
|
if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK)
|
return -EIO;
|
}
|
else
|
if (flp->configured)
|
memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
|
else
|
memset(&data.config, 0, sizeof(struct frad_conf));
|
|
memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
|
data.config.flags &= FRAD_VALID_FLAGS;
|
data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu;
|
return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0;
|
}
|
|
return 0;
|
}
|
|
static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int read)
|
{
|
struct sdla_mem mem;
|
char *temp;
|
|
if(copy_from_user(&mem, info, sizeof(mem)))
|
return -EFAULT;
|
|
if (read)
|
{
|
temp = kzalloc(mem.len, GFP_KERNEL);
|
if (!temp)
|
return -ENOMEM;
|
sdla_read(dev, mem.addr, temp, mem.len);
|
if(copy_to_user(mem.data, temp, mem.len))
|
{
|
kfree(temp);
|
return -EFAULT;
|
}
|
kfree(temp);
|
}
|
else
|
{
|
temp = memdup_user(mem.data, mem.len);
|
if (IS_ERR(temp))
|
return PTR_ERR(temp);
|
sdla_write(dev, mem.addr, temp, mem.len);
|
kfree(temp);
|
}
|
return 0;
|
}
|
|
static int sdla_reconfig(struct net_device *dev)
|
{
|
struct frad_local *flp;
|
struct conf_data data;
|
int i, len;
|
|
flp = netdev_priv(dev);
|
|
len = 0;
|
for(i=0;i<CONFIG_DLCI_MAX;i++)
|
if (flp->dlci[i])
|
data.dlci[len++] = flp->dlci[i];
|
len *= 2;
|
|
memcpy(&data, &flp->config, sizeof(struct frad_conf));
|
len += sizeof(struct frad_conf);
|
|
sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
|
sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
|
sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
|
|
return 0;
|
}
|
|
static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
{
|
struct frad_local *flp;
|
|
if(!capable(CAP_NET_ADMIN))
|
return -EPERM;
|
|
flp = netdev_priv(dev);
|
|
if (!flp->initialized)
|
return -EINVAL;
|
|
switch (cmd)
|
{
|
case FRAD_GET_CONF:
|
case FRAD_SET_CONF:
|
return sdla_config(dev, ifr->ifr_data, cmd == FRAD_GET_CONF);
|
|
case SDLA_IDENTIFY:
|
ifr->ifr_flags = flp->type;
|
break;
|
|
case SDLA_CPUSPEED:
|
return sdla_cpuspeed(dev, ifr);
|
|
/* ==========================================================
|
NOTE: This is rather a useless action right now, as the
|
current driver does not support protocols other than
|
FR. However, Sangoma has modules for a number of
|
other protocols in the works.
|
============================================================*/
|
case SDLA_PROTOCOL:
|
if (flp->configured)
|
return -EALREADY;
|
|
switch (ifr->ifr_flags)
|
{
|
case ARPHRD_FRAD:
|
dev->type = ifr->ifr_flags;
|
break;
|
default:
|
return -ENOPROTOOPT;
|
}
|
break;
|
|
case SDLA_CLEARMEM:
|
sdla_clear(dev);
|
break;
|
|
case SDLA_WRITEMEM:
|
case SDLA_READMEM:
|
if(!capable(CAP_SYS_RAWIO))
|
return -EPERM;
|
return sdla_xfer(dev, ifr->ifr_data, cmd == SDLA_READMEM);
|
|
case SDLA_START:
|
sdla_start(dev);
|
break;
|
|
case SDLA_STOP:
|
sdla_stop(dev);
|
break;
|
|
default:
|
return -EOPNOTSUPP;
|
}
|
return 0;
|
}
|
|
static int sdla_change_mtu(struct net_device *dev, int new_mtu)
|
{
|
if (netif_running(dev))
|
return -EBUSY;
|
|
/* for now, you can't change the MTU! */
|
return -EOPNOTSUPP;
|
}
|
|
static int sdla_set_config(struct net_device *dev, struct ifmap *map)
|
{
|
struct frad_local *flp;
|
int i;
|
char byte;
|
unsigned base;
|
int err = -EINVAL;
|
|
flp = netdev_priv(dev);
|
|
if (flp->initialized)
|
return -EINVAL;
|
|
for(i=0; i < ARRAY_SIZE(valid_port); i++)
|
if (valid_port[i] == map->base_addr)
|
break;
|
|
if (i == ARRAY_SIZE(valid_port))
|
return -EINVAL;
|
|
if (!request_region(map->base_addr, SDLA_IO_EXTENTS, dev->name)){
|
pr_warn("io-port 0x%04lx in use\n", dev->base_addr);
|
return -EINVAL;
|
}
|
base = map->base_addr;
|
|
/* test for card types, S502A, S502E, S507, S508 */
|
/* these tests shut down the card completely, so clear the state */
|
flp->type = SDLA_UNKNOWN;
|
flp->state = 0;
|
|
for(i=1;i<SDLA_IO_EXTENTS;i++)
|
if (inb(base + i) != 0xFF)
|
break;
|
|
if (i == SDLA_IO_EXTENTS) {
|
outb(SDLA_HALT, base + SDLA_REG_Z80_CONTROL);
|
if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x08) {
|
outb(SDLA_S502E_INTACK, base + SDLA_REG_CONTROL);
|
if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x0C) {
|
outb(SDLA_HALT, base + SDLA_REG_CONTROL);
|
flp->type = SDLA_S502E;
|
goto got_type;
|
}
|
}
|
}
|
|
for(byte=inb(base),i=0;i<SDLA_IO_EXTENTS;i++)
|
if (inb(base + i) != byte)
|
break;
|
|
if (i == SDLA_IO_EXTENTS) {
|
outb(SDLA_HALT, base + SDLA_REG_CONTROL);
|
if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x30) {
|
outb(SDLA_S507_ENABLE, base + SDLA_REG_CONTROL);
|
if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x32) {
|
outb(SDLA_HALT, base + SDLA_REG_CONTROL);
|
flp->type = SDLA_S507;
|
goto got_type;
|
}
|
}
|
}
|
|
outb(SDLA_HALT, base + SDLA_REG_CONTROL);
|
if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x00) {
|
outb(SDLA_S508_INTEN, base + SDLA_REG_CONTROL);
|
if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x10) {
|
outb(SDLA_HALT, base + SDLA_REG_CONTROL);
|
flp->type = SDLA_S508;
|
goto got_type;
|
}
|
}
|
|
outb(SDLA_S502A_HALT, base + SDLA_REG_CONTROL);
|
if (inb(base + SDLA_S502_STS) == 0x40) {
|
outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
|
if (inb(base + SDLA_S502_STS) == 0x40) {
|
outb(SDLA_S502A_INTEN, base + SDLA_REG_CONTROL);
|
if (inb(base + SDLA_S502_STS) == 0x44) {
|
outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
|
flp->type = SDLA_S502A;
|
goto got_type;
|
}
|
}
|
}
|
|
netdev_notice(dev, "Unknown card type\n");
|
err = -ENODEV;
|
goto fail;
|
|
got_type:
|
switch(base) {
|
case 0x270:
|
case 0x280:
|
case 0x380:
|
case 0x390:
|
if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
|
goto fail;
|
}
|
|
switch (map->irq) {
|
case 2:
|
if (flp->type != SDLA_S502E)
|
goto fail;
|
break;
|
|
case 10:
|
case 11:
|
case 12:
|
case 15:
|
case 4:
|
if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
|
goto fail;
|
break;
|
case 3:
|
case 5:
|
case 7:
|
if (flp->type == SDLA_S502A)
|
goto fail;
|
break;
|
|
default:
|
goto fail;
|
}
|
|
err = -EAGAIN;
|
if (request_irq(dev->irq, sdla_isr, 0, dev->name, dev))
|
goto fail;
|
|
if (flp->type == SDLA_S507) {
|
switch(dev->irq) {
|
case 3:
|
flp->state = SDLA_S507_IRQ3;
|
break;
|
case 4:
|
flp->state = SDLA_S507_IRQ4;
|
break;
|
case 5:
|
flp->state = SDLA_S507_IRQ5;
|
break;
|
case 7:
|
flp->state = SDLA_S507_IRQ7;
|
break;
|
case 10:
|
flp->state = SDLA_S507_IRQ10;
|
break;
|
case 11:
|
flp->state = SDLA_S507_IRQ11;
|
break;
|
case 12:
|
flp->state = SDLA_S507_IRQ12;
|
break;
|
case 15:
|
flp->state = SDLA_S507_IRQ15;
|
break;
|
}
|
}
|
|
for(i=0; i < ARRAY_SIZE(valid_mem); i++)
|
if (valid_mem[i] == map->mem_start)
|
break;
|
|
err = -EINVAL;
|
if (i == ARRAY_SIZE(valid_mem))
|
goto fail2;
|
|
if (flp->type == SDLA_S502A && (map->mem_start & 0xF000) >> 12 == 0x0E)
|
goto fail2;
|
|
if (flp->type != SDLA_S507 && map->mem_start >> 16 == 0x0B)
|
goto fail2;
|
|
if (flp->type == SDLA_S507 && map->mem_start >> 16 == 0x0D)
|
goto fail2;
|
|
byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
|
byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
|
switch(flp->type) {
|
case SDLA_S502A:
|
case SDLA_S502E:
|
switch (map->mem_start >> 16) {
|
case 0x0A:
|
byte |= SDLA_S502_SEG_A;
|
break;
|
case 0x0C:
|
byte |= SDLA_S502_SEG_C;
|
break;
|
case 0x0D:
|
byte |= SDLA_S502_SEG_D;
|
break;
|
case 0x0E:
|
byte |= SDLA_S502_SEG_E;
|
break;
|
}
|
break;
|
case SDLA_S507:
|
switch (map->mem_start >> 16) {
|
case 0x0A:
|
byte |= SDLA_S507_SEG_A;
|
break;
|
case 0x0B:
|
byte |= SDLA_S507_SEG_B;
|
break;
|
case 0x0C:
|
byte |= SDLA_S507_SEG_C;
|
break;
|
case 0x0E:
|
byte |= SDLA_S507_SEG_E;
|
break;
|
}
|
break;
|
case SDLA_S508:
|
switch (map->mem_start >> 16) {
|
case 0x0A:
|
byte |= SDLA_S508_SEG_A;
|
break;
|
case 0x0C:
|
byte |= SDLA_S508_SEG_C;
|
break;
|
case 0x0D:
|
byte |= SDLA_S508_SEG_D;
|
break;
|
case 0x0E:
|
byte |= SDLA_S508_SEG_E;
|
break;
|
}
|
break;
|
}
|
|
/* set the memory bits, and enable access */
|
outb(byte, base + SDLA_REG_PC_WINDOW);
|
|
switch(flp->type)
|
{
|
case SDLA_S502E:
|
flp->state = SDLA_S502E_ENABLE;
|
break;
|
case SDLA_S507:
|
flp->state |= SDLA_MEMEN;
|
break;
|
case SDLA_S508:
|
flp->state = SDLA_MEMEN;
|
break;
|
}
|
outb(flp->state, base + SDLA_REG_CONTROL);
|
|
dev->irq = map->irq;
|
dev->base_addr = base;
|
dev->mem_start = map->mem_start;
|
dev->mem_end = dev->mem_start + 0x2000;
|
flp->initialized = 1;
|
return 0;
|
|
fail2:
|
free_irq(map->irq, dev);
|
fail:
|
release_region(base, SDLA_IO_EXTENTS);
|
return err;
|
}
|
|
static const struct net_device_ops sdla_netdev_ops = {
|
.ndo_open = sdla_open,
|
.ndo_stop = sdla_close,
|
.ndo_do_ioctl = sdla_ioctl,
|
.ndo_set_config = sdla_set_config,
|
.ndo_start_xmit = sdla_transmit,
|
.ndo_change_mtu = sdla_change_mtu,
|
};
|
|
static void setup_sdla(struct net_device *dev)
|
{
|
struct frad_local *flp = netdev_priv(dev);
|
|
netdev_boot_setup_check(dev);
|
|
dev->netdev_ops = &sdla_netdev_ops;
|
dev->flags = 0;
|
dev->type = 0xFFFF;
|
dev->hard_header_len = 0;
|
dev->addr_len = 0;
|
dev->mtu = SDLA_MAX_MTU;
|
|
flp->activate = sdla_activate;
|
flp->deactivate = sdla_deactivate;
|
flp->assoc = sdla_assoc;
|
flp->deassoc = sdla_deassoc;
|
flp->dlci_conf = sdla_dlci_conf;
|
flp->dev = dev;
|
|
timer_setup(&flp->timer, sdla_poll, 0);
|
flp->timer.expires = 1;
|
}
|
|
static struct net_device *sdla;
|
|
static int __init init_sdla(void)
|
{
|
int err;
|
|
printk("%s.\n", version);
|
|
sdla = alloc_netdev(sizeof(struct frad_local), "sdla0",
|
NET_NAME_UNKNOWN, setup_sdla);
|
if (!sdla)
|
return -ENOMEM;
|
|
err = register_netdev(sdla);
|
if (err)
|
free_netdev(sdla);
|
|
return err;
|
}
|
|
static void __exit exit_sdla(void)
|
{
|
struct frad_local *flp = netdev_priv(sdla);
|
|
unregister_netdev(sdla);
|
if (flp->initialized) {
|
free_irq(sdla->irq, sdla);
|
release_region(sdla->base_addr, SDLA_IO_EXTENTS);
|
}
|
del_timer_sync(&flp->timer);
|
free_netdev(sdla);
|
}
|
|
MODULE_LICENSE("GPL");
|
|
module_init(init_sdla);
|
module_exit(exit_sdla);
|
