patch-1.3.78 linux/drivers/net/sdla.c
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- Lines: 1640
- Date:
Mon Mar 25 10:06:28 1996
- Orig file:
v1.3.77/linux/drivers/net/sdla.c
- Orig date:
Thu Jan 1 02:00:00 1970
diff -u --recursive --new-file v1.3.77/linux/drivers/net/sdla.c linux/drivers/net/sdla.c
@@ -0,0 +1,1639 @@
+/*
+ * 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 0.10 23 Mar 1996
+ *
+ * Credits: Sangoma Technologies, for the use of 2 cards for an extended
+ * period of time.
+ * 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>
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/malloc.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+
+#include <asm/system.h>
+#include <asm/bitops.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/if_frad.h>
+
+#include <linux/sdla.h>
+
+static const char* version = "SDLA driver v0.10, 23 Mar 1996, mike.mclagan@linux.org";
+
+static const char* devname = "sdla";
+
+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};
+
+/*********************************************************
+ *
+ * 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 device *dev, int addr, void *buf, short len)
+{
+ unsigned long flags;
+ char *temp, *base;
+ int offset, bytes;
+
+ temp = buf;
+ while(len)
+ {
+ offset = addr & 0x1FFF;
+ if (offset + len > 0x2000)
+ bytes = 0x2000 - offset;
+ else
+ bytes = len;
+
+ base = (void *) dev->mem_start;
+ base += offset;
+
+ save_flags(flags);
+ cli();
+ SDLA_WINDOW(dev, addr);
+ memcpy(temp, base, bytes);
+ restore_flags(flags);
+
+ addr += bytes;
+ temp += bytes;
+ len -= bytes;
+ }
+}
+
+static void sdla_write(struct device *dev, int addr, void *buf, short len)
+{
+ unsigned long flags;
+ char *temp, *base;
+ int offset, bytes;
+
+ temp = buf;
+ while(len)
+ {
+ offset = addr & 0x1FFF;
+ if (offset + len > 0x2000)
+ bytes = 0x2000 - offset;
+ else
+ bytes = len;
+
+ base = (void *) dev->mem_start;
+ base += offset;
+
+ save_flags(flags);
+ cli();
+ SDLA_WINDOW(dev, addr);
+ memcpy(base, temp, bytes);
+ restore_flags(flags);
+
+ addr += bytes;
+ temp += bytes;
+ len -= bytes;
+ }
+}
+
+static void sdla_clear(struct device *dev)
+{
+ unsigned long flags;
+ char *base;
+ int offset, len, addr, bytes;
+
+ len = 65536;
+ addr = 0;
+ while(len)
+ {
+ offset = addr & 0x1FFF;
+ if (offset + len > 0x2000)
+ bytes = offset + len - 0x2000;
+ else
+ bytes = len;
+
+ base = (void *) dev->mem_start;
+ base += offset;
+
+ save_flags(flags);
+ cli();
+ SDLA_WINDOW(dev, addr);
+ memset(base, 0, bytes);
+ restore_flags(flags);
+
+ addr += bytes;
+ len -= bytes;
+ }
+}
+
+static char sdla_byte(struct device *dev, int addr)
+{
+ unsigned long flags;
+ char byte, *temp;
+
+ temp = (void *) dev->mem_start;
+ temp += addr & 0x1FFF;
+
+ save_flags(flags);
+ cli();
+ SDLA_WINDOW(dev, addr);
+ byte = *temp;
+ restore_flags(flags);
+
+ return(byte);
+}
+
+void sdla_stop(struct device *dev)
+{
+ struct frad_local *flp;
+
+ flp = dev->priv;
+ 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;
+ }
+}
+
+void sdla_start(struct device *dev)
+{
+ struct frad_local *flp;
+
+ flp = dev->priv;
+ 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
+ *
+ ***************************************************/
+
+int sdla_z80_poll(struct 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 & 0x1FFF;
+
+ resp = ~resp1;
+ while ((jiffies < done) && (resp != resp1) && (!resp2 || (resp != resp2)))
+ {
+ if (jiffies != now)
+ {
+ SDLA_WINDOW(dev, z80_addr);
+ now = jiffies;
+ resp = *temp;
+ }
+ }
+ return(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 */
+#define Z80_SCC_OK '3' /* SCC is on board */
+#define Z80_SCC_BAD '4' /* SCC was not found */
+
+static int sdla_cpuspeed(struct 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)
+ 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);
+}
+
+/************************************************
+ *
+ * Direct interaction with the Frame Relay code
+ * starts here.
+ *
+ ************************************************/
+
+struct _dlci_stat {
+ short dlci __attribute__((packed));
+ char flags __attribute__((packed));
+};
+
+struct _frad_stat {
+ char flags;
+ struct _dlci_stat dlcis[SDLA_MAX_DLCI];
+};
+
+static void sdla_errors(struct device *dev, int cmd, int dlci, int ret, int len, void *data)
+{
+ struct _dlci_stat *pstatus;
+ short *pdlci;
+ int i;
+ char *state;
+
+ switch (ret)
+ {
+ case SDLA_RET_MODEM:
+ state = data;
+ if (*state & SDLA_MODEM_DCD_LOW)
+ printk(KERN_NOTICE "%s: Modem DCD unexpectedly low!\n", dev->name);
+ if (*state & SDLA_MODEM_CTS_LOW)
+ printk(KERN_NOTICE "%s: Modem CTS unexpectedly low!\n", dev->name);
+/* I should probably do something about this! */
+ break;
+
+ case SDLA_RET_CHANNEL_OFF:
+ printk(KERN_NOTICE "%s: Channel became inoperative!\n", dev->name);
+/* same here */
+ break;
+
+ case SDLA_RET_CHANNEL_ON:
+ printk(KERN_NOTICE "%s: Channel became operative!\n", dev->name);
+/* same here */
+ break;
+
+ case SDLA_RET_DLCI_STATUS:
+ printk(KERN_NOTICE "%s: Status change reported by Access Node.\n", dev->name);
+ 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
+ state = "unknown status";
+
+ printk(KERN_NOTICE "%s: DLCI %i: %s.\n", dev->name, pstatus->dlci, state);
+/* same here */
+ }
+ break;
+
+ case SDLA_RET_DLCI_UNKNOWN:
+ printk(KERN_DEBUG "%s: Received unknown DLCIs:", dev->name);
+ len /= 2;
+ for(pdlci = data,i=0;i < len;i++,pdlci++)
+ printk(" %i", *pdlci);
+ printk("\n");
+ break;
+
+ case SDLA_RET_TIMEOUT:
+ printk(KERN_ERR "%s: Command timed out!\n", dev->name);
+ break;
+
+ default:
+ /*
+ * Further processing could be done here
+ * printk(KERN_DEBUG "%s: Unhandled return code 0x%2.2X\n", dev->name, ret);
+ *
+ */
+ }
+}
+
+static int sdla_cmd(struct 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;
+ int jiffs, ret, waiting, len;
+ long temp, window;
+
+ flp = dev->priv;
+
+ window = flp->type == SDLA_S508 ? SDLA_508_CMD_BUF : SDLA_502_CMD_BUF;
+ temp = (int) dev->mem_start;
+ temp += window & 0x1FFF;
+ cmd_buf = (struct sdla_cmd *)temp;
+ ret = 0;
+ jiffs = jiffies + HZ / 2; /* 1/2 second timeout */
+ save_flags(pflags);
+ cli();
+ 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;
+ restore_flags(pflags);
+
+ waiting = 1;
+ len = 0;
+ while (waiting && (jiffies <= jiffs))
+ {
+ if (waiting++ % 4)
+ {
+ save_flags(pflags);
+ cli();
+ SDLA_WINDOW(dev, window);
+ waiting = ((volatile)(cmd_buf->opp_flag));
+ restore_flags(pflags);
+ }
+ }
+
+ if (!waiting)
+ {
+ save_flags(pflags);
+ cli();
+ SDLA_WINDOW(dev, window);
+ ret = cmd_buf->retval;
+ len = cmd_buf->length;
+ if (outbuf && len)
+ {
+ *outlen = *outlen >= len ? len : *outlen;
+ memcpy(outbuf, cmd_buf->data, *outlen);
+ }
+ if (ret)
+ memcpy(&status, cmd_buf->data, len);
+ restore_flags(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 device *dev);
+
+int sdla_activate(struct device *slave, struct device *master)
+{
+ struct frad_local *flp;
+ int i;
+
+ flp = slave->priv;
+
+ 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 (slave->start && (flp->config.station == FRAD_STATION_NODE))
+ sdla_cmd(slave, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
+
+ return(0);
+}
+
+int sdla_deactivate(struct device *slave, struct device *master)
+{
+ struct frad_local *flp;
+ int i;
+
+ flp = slave->priv;
+
+ for(i=0;i<CONFIG_DLCI_MAX;i++)
+ if (flp->master[i] == master)
+ break;
+
+ flp->dlci[i] = -abs(flp->dlci[i]);
+
+ if (slave->start && (flp->config.station == FRAD_STATION_NODE))
+ sdla_cmd(slave, SDLA_DEACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
+
+ return(0);
+}
+
+int sdla_assoc(struct device *slave, struct device *master)
+{
+ struct frad_local *flp;
+ int i;
+
+ if (master->type != ARPHRD_DLCI)
+ return(-EINVAL);
+
+ flp = slave->priv;
+
+ 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 ?? */
+
+ MOD_INC_USE_COUNT;
+
+ flp->master[i] = master;
+ flp->dlci[i] = -*(short *)(master->dev_addr);
+ master->mtu = slave->mtu;
+
+ if (slave->start)
+ 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);
+}
+
+int sdla_deassoc(struct device *slave, struct device *master)
+{
+ struct frad_local *flp;
+ int i;
+
+ flp = slave->priv;
+
+ 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;
+
+ MOD_DEC_USE_COUNT;
+
+ if (slave->start)
+ 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);
+}
+
+int sdla_dlci_conf(struct device *slave, struct device *master, int get)
+{
+ struct frad_local *flp;
+ struct frad_local *dlp;
+ int i;
+
+ flp = slave->priv;
+
+ for(i=0;i<CONFIG_DLCI_MAX;i++)
+ if (flp->master[i] == master)
+ break;
+
+ if (i == CONFIG_DLCI_MAX)
+ return(-ENODEV);
+
+ dlp = master->priv;
+ if (slave->start)
+ sdla_cmd(slave, SDLA_SET_DLCI_CONFIGURATION, flp->dlci[i], 0,
+ &dlp->config, sizeof(struct dlci_conf) - 4 * sizeof(short), NULL, NULL);
+
+ return(0);
+}
+
+/**************************
+ *
+ * now for the Linux driver
+ *
+ **************************/
+
+static int sdla_transmit(struct sk_buff *skb, struct device *dev)
+{
+ struct frad_local *flp;
+ int ret, addr;
+ short size;
+ unsigned long flags;
+ struct buf_entry *pbuf;
+
+ flp = dev->priv;
+ ret = 0;
+
+ if (dev->tbusy)
+ return(1);
+
+ if (skb == NULL)
+ return(0);
+
+ if (set_bit(0, (void*)&dev->tbusy) != 0)
+ printk(KERN_WARNING "%s: transmitter access conflict.\n", dev->name);
+ else
+ {
+ 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)
+ {
+ save_flags(flags);
+ cli();
+ SDLA_WINDOW(dev, addr);
+ pbuf = (void *)(((int) dev->mem_start) + (addr & 0x1FFF));
+
+ sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
+
+ SDLA_WINDOW(dev, addr);
+ pbuf->opp_flag = 1;
+ restore_flags(flags);
+ }
+ break;
+ }
+
+ switch (ret)
+ {
+ case SDLA_RET_OK:
+ flp->stats.tx_packets++;
+ ret = 0;
+ break;
+
+ default:
+ flp->stats.tx_errors++;
+ ret = 1;
+ }
+
+ /* per Alan Cox, we can drop the packet on the floor if it doesn't go */
+ dev_kfree_skb(skb, FREE_WRITE);
+
+ dev->tbusy = 0;
+ }
+ return(ret);
+}
+
+static void sdla_receive(struct device *dev)
+{
+ struct 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, received, success, addr;
+ short dlci, len, split;
+ char bogus;
+
+ flp = dev->priv;
+ bogus = 0;
+ success = 0;
+ received = 0;
+ addr = 0;
+ skb = NULL;
+ master = NULL;
+
+ save_flags(flags);
+ cli();
+
+ switch (flp->type)
+ {
+ case SDLA_S502A:
+ case SDLA_S502E:
+ cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & 0x1FFF));
+ SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
+ if (!cmd->opp_flag)
+ break;
+
+ dlci = cmd->dlci;
+ len = cmd->length;
+
+ for (i=0;i<CONFIG_DLCI_MAX;i++)
+ if (flp->dlci[i] == dlci)
+ break;
+
+ if (i == CONFIG_DLCI_MAX)
+ {
+ printk(KERN_NOTICE "%s: Recieved packet from invalid DLCI %i, ignoring.", dev->name, dlci);
+ flp->stats.rx_errors++;
+ cmd->opp_flag = 0;
+ break;
+ }
+
+ master = flp->master[i];
+ skb = dev_alloc_skb(len);
+ if (skb == NULL)
+ {
+ printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
+ flp->stats.rx_dropped++;
+ cmd->opp_flag = 0;
+ break;
+ }
+
+ /* pick up the data */
+ sdla_read(dev, dev->mem_start + ((SDLA_502_RCV_BUF + SDLA_502_DATA_OFS) & 0x1FFF), skb_put(skb,len), len);
+ cmd->opp_flag = 0;
+ success = 1;
+ break;
+
+ case SDLA_S508:
+ pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & 0x1FFF));
+ SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
+ pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & 0x1FFF));
+ if (!pbuf->opp_flag)
+ break;
+
+ dlci = pbuf->dlci;
+ len = pbuf->length;
+ addr = pbuf->buf_addr;
+
+ for (i=0;i<CONFIG_DLCI_MAX;i++)
+ if (flp->dlci[i] == dlci)
+ break;
+
+ if (i == CONFIG_DLCI_MAX)
+ {
+ printk(KERN_NOTICE "%s: Recieved packet from invalid DLCI %i, ignoring.", dev->name, dlci);
+ flp->stats.rx_errors++;
+ pbuf->opp_flag = 0;
+ break;
+ }
+
+ master = flp->master[i];
+ skb = dev_alloc_skb(len);
+ if (skb == NULL)
+ {
+ printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
+ flp->stats.rx_dropped++;
+ pbuf->opp_flag = 0;
+ break;
+ }
+
+ /* is this buffer split off the end of the internal ring buffer */
+ split = addr + len > pbufi->buf_top + 1 ? pbufi->buf_top - addr + 1 : 0;
+ len -= split;
+
+ /* lets get the data */
+ sdla_read(dev, addr, skb_put(skb, len), len);
+ if (split)
+ {
+ SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
+ sdla_read(dev, pbufi->buf_base, skb_put(skb, split), split);
+ }
+
+ SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
+ pbuf->opp_flag = 0;
+ success = 1;
+
+ /* increment the buffer we're looking at */
+ flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
+ break;
+ }
+
+ if (success)
+ {
+ flp->stats.rx_packets++;
+ dlp = master->priv;
+ (*dlp->receive)(skb, master);
+ }
+
+ restore_flags(flags);
+}
+
+static void sdla_isr(int irq, void *dev_id, struct pt_regs * regs)
+{
+ struct device *dev;
+ struct frad_local *flp;
+ char byte;
+
+ dev = irq2dev_map[irq];
+
+ if (dev == NULL)
+ {
+ printk(KERN_WARNING "sdla_isr(): irq %d for unknown device.\n", irq);
+ return;
+ }
+
+ flp = dev->priv;
+
+ if (!flp->initialized)
+ {
+ printk(KERN_WARNING "%s: irq %d for unintialiazed device.\n", dev->name, irq);
+ return;
+ }
+
+ dev->interrupt = 1;
+ 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:
+ printk(KERN_WARNING "%s: invalid irq flag 0x%02X.\n", dev->name, 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);
+ }
+
+ dev->interrupt = 0;
+ /* 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));
+}
+
+static void sdla_poll(unsigned long device)
+{
+ struct device *dev;
+ struct frad_local *flp;
+
+ dev = (struct device *) device;
+ flp = dev->priv;
+
+ if (sdla_byte(dev, SDLA_502_RCV_BUF))
+ sdla_receive(dev);
+
+ flp->timer.expires = 1;
+ add_timer(&flp->timer);
+}
+
+static int sdla_close(struct device *dev)
+{
+ struct frad_local *flp;
+ struct intr_info intr;
+ int len, i;
+ short dlcis[CONFIG_DLCI_MAX];
+
+ flp = dev->priv;
+
+ 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));
+ /* lets 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);
+ sdla_stop(dev);
+
+ dev->tbusy = 1;
+ dev->start = 0;
+
+ MOD_DEC_USE_COUNT;
+
+ return(0);
+}
+
+struct conf_data {
+ struct frad_conf config;
+ short dlci[CONFIG_DLCI_MAX];
+};
+
+static int sdla_open(struct device *dev)
+{
+ struct frad_local *flp;
+ struct dlci_local *dlp;
+ struct conf_data data;
+ struct intr_info intr;
+ int len, i;
+ char byte;
+
+ flp = dev->priv;
+
+ if (!flp->initialized)
+ return(-EPERM);
+
+ if (!flp->configured)
+ return(-EPERM);
+
+ /* off to the races! */
+ sdla_start(dev);
+
+ /* 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);
+
+ /* lets 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 = flp->master[i]->priv;
+ if (dlp->configured)
+ sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
+ }
+
+ dev->tbusy = 0;
+ dev->interrupt = 0;
+ dev->start = 1;
+
+ MOD_INC_USE_COUNT;
+
+ return(0);
+}
+
+static int sdla_config(struct device *dev, struct frad_conf *conf, int get)
+{
+ struct frad_local *flp;
+ struct conf_data data;
+ int i, err;
+
+ if (dev->type == 0xFFFF)
+ return(-EUNATCH);
+
+ flp = dev->priv;
+
+ if (!get)
+ {
+ if (dev->start)
+ return(-EBUSY);
+
+ err = verify_area(VERIFY_READ, conf, sizeof(struct frad_conf));
+ if (err)
+ return(err);
+
+ memcpy_fromfs(&data.config, conf, sizeof(struct frad_conf));
+
+ 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 (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 fradhdr);
+ flp->configured = 1;
+ }
+ else
+ {
+ err = verify_area(VERIFY_WRITE, conf, sizeof(struct frad_conf));
+ if (err)
+ return(err);
+
+ sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, &data, sizeof(data), NULL, NULL);
+ memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
+
+ data.config.flags &= ~SDLA_DIRECT_RECV;
+ data.config.mtu -= sizeof(struct fradhdr);
+ memcpy_tofs(conf, &data.config, sizeof(struct frad_conf));
+ }
+
+ return(0);
+}
+
+static int sdla_xfer(struct device *dev, struct sdla_mem *info, int read)
+{
+ struct sdla_mem mem;
+ int err;
+ char *temp;
+
+ err = verify_area(VERIFY_READ, info, sizeof(struct sdla_mem));
+ if (err)
+ return(err);
+
+ memcpy_fromfs(&mem, info, sizeof(mem));
+ if (read)
+ {
+ err = verify_area(VERIFY_WRITE, mem.data, mem.len);
+ if (err)
+ return(err);
+
+ temp = kmalloc(mem.len, GFP_KERNEL);
+ if (!temp)
+ return(-ENOMEM);
+ sdla_read(dev, mem.addr, temp, mem.len);
+ memcpy_tofs(mem.data, temp, mem.len);
+ kfree(temp);
+ }
+ else
+ {
+ err = verify_area(VERIFY_READ, mem.data, mem.len);
+ if (err)
+ return(err);
+
+ temp = kmalloc(mem.len, GFP_KERNEL);
+ if (!temp)
+ return(-ENOMEM);
+ memcpy_fromfs(temp, mem.data, mem.len);
+ sdla_write(dev, mem.addr, temp, mem.len);
+ kfree(temp);
+ }
+ return(0);
+}
+
+static int sdla_reconfig(struct device *dev)
+{
+ struct frad_local *flp;
+ struct conf_data data;
+ int i, len;
+
+ flp = dev->priv;
+
+ memcpy(&data, &flp->config, sizeof(struct frad_conf));
+
+ len = 0;
+ for(i=0;i<CONFIG_DLCI_MAX;i++)
+ if (flp->dlci[i])
+ data.dlci[len++] = flp->dlci[i];
+ len *= 2;
+ 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 device *dev, struct ifreq *ifr, int cmd)
+{
+ struct frad_local *flp;
+
+ flp = dev->priv;
+
+ if (!flp->initialized)
+ return(-EPERM);
+
+ switch (cmd)
+ {
+ case FRAD_GET_CONF:
+ case FRAD_SET_CONF:
+ return(sdla_config(dev, (struct frad_conf *)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
+ driver does not support protocols other than FR right
+ now. However, Sangoma has modules for a number of
+ other protocols.
+============================================================*/
+ case SDLA_PROTOCOL:
+ if (flp->configured)
+ return(-EALREADY);
+
+ switch (ifr->ifr_flags)
+ {
+ case ARPHRD_FRAD:
+ dev->type = ifr->ifr_flags;
+ dev->family = AF_UNSPEC;
+ break;
+
+ default:
+ return(-ENOPROTOOPT);
+ }
+ break;
+
+ case SDLA_CLEARMEM:
+ sdla_clear(dev);
+ break;
+
+ case SDLA_WRITEMEM:
+ case SDLA_READMEM:
+ return(sdla_xfer(dev, (struct sdla_mem *)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);
+}
+
+int sdla_change_mtu(struct device *dev, int new_mtu)
+{
+ struct frad_local *flp;
+
+ flp = dev->priv;
+
+ if (dev->start)
+ return(-EBUSY);
+
+ /* for now, you can't change the MTU! */
+ return(-EACCES);
+}
+
+int sdla_set_config(struct device *dev, struct ifmap *map)
+{
+ struct frad_local *flp;
+ int i;
+ char byte;
+
+ flp = dev->priv;
+
+ if (flp->initialized)
+ return(-EINVAL);
+
+ for(i=0;i < sizeof(valid_port) / sizeof (int) ; i++)
+ if (valid_port[i] == map->base_addr)
+ break;
+
+ if (i == sizeof(valid_port) / sizeof(int))
+ return(-EINVAL);
+
+ dev->base_addr = map->base_addr;
+ request_region(dev->base_addr, SDLA_IO_EXTENTS, dev->name);
+
+ /* 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(dev->base_addr + i) != 0xFF)
+ break;
+
+ if (i == SDLA_IO_EXTENTS)
+ {
+ outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
+ if ((inb(dev->base_addr + SDLA_S502_STS) & 0x0F) == 0x08)
+ {
+ outb(SDLA_S502E_INTACK, dev->base_addr + SDLA_REG_CONTROL);
+ if ((inb(dev->base_addr + SDLA_S502_STS) & 0x0F) == 0x0C)
+ {
+ outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
+ flp->type = SDLA_S502E;
+ }
+ }
+ }
+
+ if (flp->type == SDLA_UNKNOWN)
+ {
+ for(byte=inb(dev->base_addr),i=0;i<SDLA_IO_EXTENTS;i++)
+ if (inb(dev->base_addr + i) != byte)
+ break;
+
+ if (i == SDLA_IO_EXTENTS)
+ {
+ outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
+ if ((inb(dev->base_addr + SDLA_S502_STS) & 0x7E) == 0x30)
+ {
+ outb(SDLA_S507_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
+ if ((inb(dev->base_addr + SDLA_S502_STS) & 0x7E) == 0x32)
+ {
+ outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
+ flp->type = SDLA_S507;
+ }
+ }
+ }
+ }
+
+ if (flp->type == SDLA_UNKNOWN)
+ {
+ outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
+ if ((inb(dev->base_addr + SDLA_S508_STS) & 0x3F) == 0x00)
+ {
+ outb(SDLA_S508_INTEN, dev->base_addr + SDLA_REG_CONTROL);
+ if ((inb(dev->base_addr + SDLA_S508_STS) & 0x3F) == 0x10)
+ {
+ outb(SDLA_HALT, dev->base_addr + SDLA_REG_CONTROL);
+ flp->type = SDLA_S508;
+ }
+ }
+ }
+
+ if (flp->type == SDLA_UNKNOWN)
+ {
+ outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
+ if (inb(dev->base_addr + SDLA_S502_STS) == 0x40)
+ {
+ outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
+ if (inb(dev->base_addr + SDLA_S502_STS) == 0x40)
+ {
+ outb(SDLA_S502A_INTEN, dev->base_addr + SDLA_REG_CONTROL);
+ if (inb(dev->base_addr + SDLA_S502_STS) == 0x44)
+ {
+ outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
+ flp->type = SDLA_S502A;
+ }
+ }
+ }
+ }
+
+ if (flp->type == SDLA_UNKNOWN)
+ {
+ printk(KERN_NOTICE "%s: Unknown card type\n", dev->name);
+ return(-ENODEV);
+ }
+
+ switch(dev->base_addr)
+ {
+ case 0x270:
+ case 0x280:
+ case 0x380:
+ case 0x390:
+ if ((flp->type != SDLA_S508) && (flp->type != SDLA_S507))
+ return(-EINVAL);
+ }
+
+ switch (map->irq)
+ {
+ case 2:
+ if (flp->type != SDLA_S502E)
+ return(-EINVAL);
+ break;
+
+ case 10:
+ case 11:
+ case 12:
+ case 15:
+ case 4:
+ if ((flp->type != SDLA_S508) && (flp->type != SDLA_S507))
+ return(-EINVAL);
+
+ case 3:
+ case 5:
+ case 7:
+ if (flp->type == SDLA_S502A)
+ return(-EINVAL);
+ break;
+
+ default:
+ return(-EINVAL);
+ }
+ dev->irq = map->irq;
+
+ if (request_irq(dev->irq, &sdla_isr, 0, dev->name, NULL))
+ return(-EADDRINUSE);
+
+ irq2dev_map[dev->irq] = dev;
+
+ 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 < sizeof(valid_mem) / sizeof (int) ; i++)
+ if (valid_mem[i] == map->mem_start)
+ break;
+
+ if (i == sizeof(valid_mem) / sizeof(int))
+ return(-EINVAL);
+
+ if ((flp->type == SDLA_S502A) && (((map->mem_start & 0xF000) >> 12) == 0x0E))
+ return(-EINVAL);
+
+ if ((flp->type != SDLA_S507) && ((map->mem_start >> 16) == 0x0B))
+ return(-EINVAL);
+
+ if ((flp->type == SDLA_S507) && ((map->mem_start >> 16) == 0x0D))
+ return(-EINVAL);
+
+ dev->mem_start = map->mem_start;
+ dev->mem_end = dev->mem_start + 0x2000;
+
+ 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, dev->base_addr + 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, dev->base_addr + SDLA_REG_CONTROL);
+
+ flp->initialized = 1;
+ return(0);
+}
+
+static struct enet_statistics *sdla_stats(struct device *dev)
+{
+ struct frad_local *flp;
+
+ flp = dev->priv;
+
+ return(&flp->stats);
+}
+
+int sdla_init(struct device *dev)
+{
+ struct frad_local *flp;
+ int i;
+
+ /* allocate the private data structure */
+ flp = kmalloc(sizeof(struct frad_local), GFP_KERNEL);
+ if (!flp)
+ return(-ENOMEM);
+
+ memset(flp, 0, sizeof(struct frad_local));
+ dev->priv = flp;
+
+ dev->flags = 0;
+ dev->open = sdla_open;
+ dev->stop = sdla_close;
+ dev->do_ioctl = sdla_ioctl;
+ dev->set_config = sdla_set_config;
+ dev->get_stats = sdla_stats;
+ dev->hard_start_xmit = sdla_transmit;
+ dev->change_mtu = sdla_change_mtu;
+
+ dev->type = 0xFFFF;
+ dev->family = AF_UNSPEC;
+ dev->pa_alen = sizeof(unsigned long);
+ dev->hard_header_len = 0;
+ dev->mtu = SDLA_MAX_MTU;
+
+ for (i = 0; i < DEV_NUMBUFFS; i++)
+ skb_queue_head_init(&dev->buffs[i]);
+
+ flp->activate = sdla_activate;
+ flp->deactivate = sdla_deactivate;
+ flp->assoc = sdla_assoc;
+ flp->deassoc = sdla_deassoc;
+ flp->dlci_conf = sdla_dlci_conf;
+
+ init_timer(&flp->timer);
+ flp->timer.expires = 1;
+ flp->timer.data = (unsigned long) dev;
+ flp->timer.function = sdla_poll;
+
+ return(0);
+}
+
+void sdla_setup(void)
+{
+ printk("%s.\n", version);
+ register_frad(devname);
+}
+
+#ifdef MODULE
+static struct device sdla0 = {"sdla0", 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, sdla_init};
+
+int init_module(void)
+{
+ int result;
+
+ sdla_setup();
+ if ((result = register_netdev(&sdla0)) != 0)
+ return result;
+
+ return 0;
+}
+
+void cleanup_module(void)
+{
+ unregister_netdev(&sdla0);
+ if (sdla0.priv)
+ kfree(sdla0.priv);
+ if (sdla0.irq)
+ free_irq(sdla0.irq, NULL);
+}
+#endif /* MODULE */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov
with Sam's (original) version of this