--- /dev/null
+/*
+ * 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.
+ * 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
+ *
+ * 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>
+#include <linux/kernel.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/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/if_frad.h>
+#include <linux/sdla.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/uaccess.h>
+
+static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
+
+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;
+ bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
+ base = (const void *) (dev->mem_start + offset);
+
+ SDLA_WINDOW(dev, addr);
+ memcpy(temp, base, bytes);
+
+ addr += bytes;
+ temp += bytes;
+ 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;
+ base = (void *) (dev->mem_start + offset);
+
+ SDLA_WINDOW(dev, addr);
+ memcpy(base, temp, bytes);
+
+ addr += bytes;
+ temp += bytes;
+ 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 */
+#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;
+}
+
+/************************************************
+ *
+ * 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 *)(((int) 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(unsigned long device)
+{
+ struct net_device *dev;
+ struct frad_local *flp;
+
+ dev = (struct net_device *) device;
+ flp = netdev_priv(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;
+
+ init_timer(&flp->timer);
+ flp->timer.expires = 1;
+ flp->timer.data = (unsigned long) dev;
+ flp->timer.function = sdla_poll;
+}
+
+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);
Code Review / kvmfornfv.git / blobdiff