cs8900a.c
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- /*
- * cs8900a.c: A Crystal Semiconductor (Now Cirrus Logic) CS8900A
- driver for SMDK-s3c2410 (based on cs89x0.c)
- *
- * Author: Yong-iL Joh <tolkien@mizi.com>
- * Date : $Date: 2002/10/16 09:08:07 $
- *
- * $Revision: 1.1.2.5 $
- Wed Aug 14 2002 Yong-iL Joh <tolkien@mizi.com>
- - initial, based on cs89x0.c
- Wed Aug 16 2002 Yong-iL Joh <tolkien@mizi.com>
- - working!
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive
- * for more details.
- */
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/init.h>
- #include <linux/slab.h>
- #include <linux/errno.h>
- #include <linux/spinlock.h>
- #include <linux/ioport.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/skbuff.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- #include <asm/hardware.h>
- #define IRQ_LAN IRQ_CS8900
- #include "cs89x0.h"
- /*
- * Set this to zero to remove all the debug statements via
- * dead code elimination
- */
- #undef DEBUGGING 4
- #if DEBUGGING
- #define DPRINTK(n, args...)
- if (n <= DEBUGGING) {
- printk(args);
- }
- #else
- #define DPRINTK(n, args...)
- #endif
- #if DEBUGGING
- static char version[] __initdata =
- "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>n";
- #endif
- /* First, a few definitions that the brave might change.
- A zero-terminated list of I/O addresses to be probed. Some special flags..
- Addr & 1 = Read back the address port, look for signature and reset
- the page window before probing
- Addr & 3 = Reset the page window and probe
- The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
- but it is possible that a Cirrus board could be plugged into the ISA
- slots. */
- static unsigned int netcard_portlist[] __initdata =
- { vCS8900_BASE + 0x300, 0};
- /* The number of low I/O ports used by the ethercard. */
- #define NETCARD_IO_EXTENT 0xfff
- /* we allow the user to override various values normally set in the EEPROM */
- #define FORCE_RJ45 0x0001 /* pick one of these three */
- #define FORCE_AUI 0x0002
- #define FORCE_BNC 0x0004
- #define FORCE_AUTO 0x0010 /* pick one of these three */
- #define FORCE_HALF 0x0020
- #define FORCE_FULL 0x0030
- /* Information that need to be kept for each board. */
- struct net_local {
- struct net_device_stats stats;
- int chip_type; /* one of: CS8900, CS8920, CS8920M */
- char chip_revision; /* revision letter of the chip ('A'...) */
- int send_cmd; /* the proper send command:
- TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
- int auto_neg_cnf; /* auto-negotiation word from EEPROM */
- int adapter_cnf; /* adapter configuration from EEPROM */
- int isa_config; /* ISA configuration from EEPROM */
- int irq_map; /* IRQ map from EEPROM */
- int rx_mode; /* what mode are we in?
- 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
- int curr_rx_cfg; /* a copy of PP_RxCFG */
- int linectl; /* either 0 or LOW_RX_SQUELCH,
- depending on configuration. */
- int send_underrun; /* keep track of how many underruns
- in a row we get */
- int force; /* force various values; see FORCE* above. */
- spinlock_t lock;
- };
- /* Index to functions, as function prototypes. */
- extern int cs89x0_probe(struct net_device *dev);
- static int cs89x0_probe1(struct net_device *dev, int ioaddr);
- static int net_open(struct net_device *dev);
- static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
- static void net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
- static void set_multicast_list(struct net_device *dev);
- static void net_timeout(struct net_device *dev);
- static void net_rx(struct net_device *dev);
- static int net_close(struct net_device *dev);
- static struct net_device_stats *net_get_stats(struct net_device *dev);
- static void reset_chip(struct net_device *dev);
- static int set_mac_address(struct net_device *dev, void *addr);
- static void count_rx_errors(int status, struct net_local *lp);
- /* Example routines you must write ;->. */
- #define tx_done(dev) 1
- /* Check for a network adaptor of this type, and return '0' iff one exists.
- If dev->base_addr == 0, probe all likely locations.
- If dev->base_addr == 1, always return failure.
- If dev->base_addr == 2, allocate space for the device and return success
- (detachable devices only).
- Return 0 on success.
- */
- int __init cs89x0_probe(struct net_device *dev) {
- int i;
- SET_MODULE_OWNER(dev);
- DPRINTK(1, "cs89x0:cs89x0_probe(0x%x)n", base_addr);
- BWSCON = (BWSCON & ~(BWSCON_ST3 | BWSCON_WS3 | BWSCON_DW3)) |
- (BWSCON_ST3 | BWSCON_WS3 | BWSCON_DW(3, BWSCON_DW_16));
- BANKCON3= BANKCON_Tacs0 | BANKCON_Tcos4 | BANKCON_Tacc14 |
- BANKCON_Toch1 | BANKCON_Tcah4 | BANKCON_Tacp6 | BANKCON_PMC1;
- set_external_irq(IRQ_CS8900, EXT_RISING_EDGE, GPIO_PULLUP_DIS);
- for (i = 0; netcard_portlist[i]; i++) {
- if (cs89x0_probe1(dev, netcard_portlist[i]) == 0)
- return 0;
- }
- printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected."
- "Be sure to disable PnP with SETUPn");
- return -ENODEV;
- }
- inline int readreg(struct net_device *dev, int portno) {
- outw(portno, dev->base_addr + ADD_PORT);
- return inw(dev->base_addr + DATA_PORT);
- }
- inline void writereg(struct net_device *dev, int portno, int value) {
- outw(portno, dev->base_addr + ADD_PORT);
- outw(value, dev->base_addr + DATA_PORT);
- }
- inline int readword(struct net_device *dev, int portno) {
- return inw(dev->base_addr + portno);
- }
- inline void writeword(struct net_device *dev, int portno, int value) {
- outw(value, dev->base_addr + portno);
- }
- inline void writeblock(struct net_device *dev, char *pData, int Length) {
- int i;
- for (i = 0 ; i < (Length/2); i++) {
- writeword(dev, TX_FRAME_PORT, *(u16 *)pData );
- pData += 2;
- }
- if (Length % 2) {
- u16 OddWordValue = *pData;
- writeword(dev, TX_FRAME_PORT, OddWordValue);
- }
- }
- inline void readblock(struct net_device *dev, char *pData, int Length) {
- u16 InputWord;
- int i;
- for (i=0; i < (Length/2); i++) {
- InputWord = readword(dev, RX_FRAME_PORT);
- *(u8*)pData++ = (u8) InputWord & 0xFF;
- *(u8*)pData++ = (u8) (InputWord >> 8) & 0xFF;
- }
- if (Length & 0x1)
- *pData = (u8) (readword(dev, RX_FRAME_PORT) & 0xff);
- }
- /* This is the real probe routine. Linux has a history of friendly device
- probes on the ISA bus. A good device probes avoids doing writes, and
- verifies that the correct device exists and functions.
- Return 0 on success.
- */
- static int __init cs89x0_probe1(struct net_device *dev, int ioaddr) {
- struct net_local *lp;
- #if DEBUGGING
- static unsigned version_printed;
- #endif
- unsigned rev_type = 0;
- int ret;
- /* Initialize the device structure. */
- if (dev->priv == NULL) {
- dev->priv = kmalloc(sizeof(struct net_local), GFP_KERNEL);
- if (dev->priv == 0) {
- ret = -ENOMEM;
- goto before_kmalloc;
- }
- lp = (struct net_local *)dev->priv;
- memset(lp, 0, sizeof(*lp));
- spin_lock_init(&lp->lock);
- }
- lp = (struct net_local *)dev->priv;
- /* Fill in the 'dev' fields. */
- dev->base_addr = ioaddr;
- /* Bus Reset Consideration */
- ret = readword(dev, ADD_PORT);
- if ((ret & ADD_MASK) != ADD_SIG ) {
- DPRINTK(1, __FUNCTION__ " 0x%08Xn", ret);
- ret = -ENODEV;
- goto after_kmalloc;
- }
- /* get the chip type */
- rev_type = readreg(dev, PRODUCT_ID_ADD);
- lp->chip_type = rev_type &~ REVISON_BITS;
- lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
- #if DEBUGGING
- if (version_printed++ == 0)
- printk(version);
- #endif
- printk(KERN_INFO "%s: cs89%c0%s rev %c(%s) found at %#3lxn",
- dev->name,
- lp->chip_type==CS8900 ? '0' : '2',
- lp->chip_type==CS8920M ? "M" : "",
- lp->chip_revision,
- readreg(dev, PP_SelfST) & ACTIVE_33V ? "3.3 Volts" : "5 Volts",
- dev->base_addr);
- if (lp->chip_type != CS8900) {
- printk(__FILE__ ": wrong device driver!n");
- ret = -ENODEV;
- goto after_kmalloc;
- }
- /* Check the chip type and revision in order to
- set the correct send command
- CS8900 revision F can use the faster send. */
- lp->send_cmd = TX_AFTER_ALL;
- if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
- lp->send_cmd = TX_NOW;
- reset_chip(dev);
- lp->adapter_cnf = A_CNF_10B_T | A_CNF_MEDIA_10B_T;
- lp->auto_neg_cnf = EE_AUTO_NEG_ENABLE;
- printk(KERN_INFO "cs89x0 media %s%s",
- (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45":"",
- (lp->adapter_cnf & A_CNF_AUI)?"AUI":"");
- dev->dev_addr[0] = 0x00;
- dev->dev_addr[1] = 0x00;
- dev->dev_addr[2] = 0xc0;
- dev->dev_addr[3] = 0xff;
- dev->dev_addr[4] = 0xee;
- dev->dev_addr[5] = 0x08;
- set_mac_address(dev, dev->dev_addr);
- dev->irq = IRQ_LAN;
- printk(", IRQ %d", dev->irq);
- dev->open = net_open;
- dev->stop = net_close;
- dev->tx_timeout = net_timeout;
- dev->watchdog_timeo = 3 * HZ;
- dev->hard_start_xmit = net_send_packet;
- dev->get_stats = net_get_stats;
- dev->set_multicast_list = set_multicast_list;
- dev->set_mac_address = set_mac_address;
- /* Fill in the fields of the device structure with ethernet values. */
- ether_setup(dev);
- printk("n");
- DPRINTK(1, "cs89x0_probe1() successfuln");
- return 0;
- after_kmalloc:
- kfree(dev->priv);
- before_kmalloc:
- return ret;
- }
- void __init reset_chip(struct net_device *dev)
- {
- int reset_start_time;
- writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
- /* wait 30 ms */
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(30*HZ/1000);
- /* Wait until the chip is reset */
- reset_start_time = jiffies;
- while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 &&
- jiffies - reset_start_time < 4)
- ;
- }
- /* Open/initialize the board. This is called (in the current kernel)
- sometime after booting when the 'ifconfig' program is run.
- This routine should set everything up anew at each open, even
- registers that "should" only need to be set once at boot, so that
- there is non-reboot way to recover if something goes wrong.
- */
- static int net_open(struct net_device *dev)
- {
- struct net_local *lp = (struct net_local *)dev->priv;
- int ret;
- /* Prevent the crystal chip from generating interrupts */
- writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) & ~ENABLE_IRQ);
- ret = request_irq(dev->irq, &net_interrupt, SA_SHIRQ, "cs89x0", dev);
- if (ret) {
- printk("%s: request_irq(%d) failedn", dev->name, dev->irq);
- goto bad_out;
- }
- /* Set up the IRQ - Apparently magic */
- if (lp->chip_type == CS8900)
- writereg(dev, PP_CS8900_ISAINT, 0);
- else
- writereg(dev, PP_CS8920_ISAINT, 0);
- /* while we're testing the interface, leave interrupts disabled */
- writereg(dev, PP_BusCTL, MEMORY_ON);
- /* Set the LineCTL quintuplet */
- lp->linectl = 0;
- /* Turn on both receive and transmit operations */
- writereg(dev, PP_LineCTL,
- readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
- /* Receive only error free packets addressed to this card */
- lp->rx_mode = 0;
- writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
- lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
- if (lp->isa_config & STREAM_TRANSFER)
- lp->curr_rx_cfg |= RX_STREAM_ENBL;
- writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
- writereg(dev, PP_TxCFG,
- TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
- TX_LATE_COL_ENBL | TX_JBR_ENBL |
- TX_ANY_COL_ENBL | TX_16_COL_ENBL);
- writereg(dev, PP_BufCFG,
- READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
- TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
- /* now that we've got our act together, enable everything */
- writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ);
- enable_irq(dev->irq);
- netif_start_queue(dev);
- DPRINTK(1, "cs89x0: net_open() succeededn");
- return 0;
- bad_out:
- return ret;
- }
- static void net_timeout(struct net_device *dev)
- {
- /* If we get here, some higher level has decided we are broken.
- There should really be a "kick me" function call instead. */
- DPRINTK(1, "%s: transmit timed out, %s?n", dev->name,
- tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
- /* Try to restart the adaptor. */
- //netif_wake_queue(dev);
- net_close(dev);
- writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
- net_open(dev);
- }
- static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
- {
- struct net_local *lp = (struct net_local *)dev->priv;
- writereg(dev, PP_BusCTL, 0x0);
- writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ);
- DPRINTK(3, "%s: sent %d byte packet of type %xn",
- dev->name, skb->len,
- (skb->data[ETH_ALEN+ETH_ALEN] << 8) |
- (skb->data[ETH_ALEN+ETH_ALEN+1]));
- /* keep the upload from being interrupted, since we
- ask the chip to start transmitting before the
- whole packet has been completely uploaded. */
- spin_lock_irq(&lp->lock);
- netif_stop_queue(dev);
- /* initiate a transmit sequence */
- writeword(dev, TX_CMD_PORT, lp->send_cmd);
- writeword(dev, TX_LEN_PORT, skb->len);
- /* Test to see if the chip has allocated memory for the packet */
- if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
- /*
- * Gasp! It hasn't. But that shouldn't happen since
- * we're waiting for TxOk, so return 1 and requeue this packet.
- */
-
- spin_unlock_irq(&lp->lock);
- DPRINTK(1, "cs89x0: Tx buffer not free!n");
- return 1;
- }
- /* Write the contents of the packet */
- writeblock(dev, skb->data, skb->len);
- spin_unlock_irq(&lp->lock);
- dev->trans_start = jiffies;
- dev_kfree_skb (skb);
- /*
- * We DO NOT call netif_wake_queue() here.
- * We also DO NOT call netif_start_queue().
- *
- * Either of these would cause another bottom half run through
- * net_send_packet() before this packet has fully gone out. That causes
- * us to hit the "Gasp!" above and the send is rescheduled. it runs like
- * a dog. We just return and wait for the Tx completion interrupt handler
- * to restart the netdevice layer
- */
- return 0;
- }
- /* The typical workload of the driver:
- Handle the network interface interrupts. */
-
- static void net_interrupt(int irq, void *dev_id, struct pt_regs * regs)
- {
- struct net_device *dev = dev_id;
- struct net_local *lp;
- int ioaddr, status;
- ioaddr = dev->base_addr;
- lp = (struct net_local *)dev->priv;
- /* we MUST read all the events out of the ISQ, otherwise we'll never
- get interrupted again. As a consequence, we can't have any limit
- on the number of times we loop in the interrupt handler. The
- hardware guarantees that eventually we'll run out of events. Of
- course, if you're on a slow machine, and packets are arriving
- faster than you can read them off, you're screwed. Hasta la
- vista, baby! */
- while ((status = readword(dev, ISQ_PORT))) {
- DPRINTK(4, "%s: event=%04xn", dev->name, status);
- switch(status & ISQ_EVENT_MASK) {
- case ISQ_RECEIVER_EVENT:
- /* Got a packet(s). */
- net_rx(dev);
- break;
- case ISQ_TRANSMITTER_EVENT:
- lp->stats.tx_packets++;
- netif_wake_queue(dev); /* Inform upper layers. */
- if ((status & ( TX_OK |
- TX_LOST_CRS | TX_SQE_ERROR |
- TX_LATE_COL | TX_16_COL)) != TX_OK) {
- if ((status & TX_OK) == 0) lp->stats.tx_errors++;
- if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
- if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
- if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
- if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
- }
- break;
- case ISQ_BUFFER_EVENT:
- if (status & READY_FOR_TX) {
- /* we tried to transmit a packet earlier,
- but inexplicably ran out of buffers.
- That shouldn't happen since we only ever
- load one packet. Shrug. Do the right
- thing anyway. */
- netif_wake_queue(dev); /* Inform upper layers. */
- }
- if (status & TX_UNDERRUN) {
- DPRINTK(1, "%s: transmit underrunn", dev->name);
- lp->send_underrun++;
- if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
- else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
- /* transmit cycle is done, although
- frame wasn't transmitted - this
- avoids having to wait for the upper
- layers to timeout on us, in the
- event of a tx underrun */
- netif_wake_queue(dev); /* Inform upper layers. */
- }
- break;
- case ISQ_RX_MISS_EVENT:
- lp->stats.rx_missed_errors += (status >>6);
- break;
- case ISQ_TX_COL_EVENT:
- lp->stats.collisions += (status >>6);
- break;
- }
- }
- }
- static void count_rx_errors(int status, struct net_local *lp) {
- lp->stats.rx_errors++;
- if (status & RX_RUNT) lp->stats.rx_length_errors++;
- if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
- if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
- /* per str 172 */
- lp->stats.rx_crc_errors++;
- if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
- return;
- }
- /* We have a good packet(s), get it/them out of the buffers. */
- static void net_rx(struct net_device *dev) {
- struct net_local *lp = (struct net_local *)dev->priv;
- struct sk_buff *skb;
- int status, length;
- int ioaddr = dev->base_addr;
- status = inw(ioaddr + RX_FRAME_PORT);
- if ((status & RX_OK) == 0) {
- count_rx_errors(status, lp);
- return;
- }
- length = inw(ioaddr + RX_FRAME_PORT);
- /* Malloc up new buffer. */
- skb = dev_alloc_skb(length + 2);
- if (skb == NULL) {
- lp->stats.rx_dropped++;
- return;
- }
- skb_reserve(skb, 2); /* longword align L3 header */
- skb->len = length;
- skb->dev = dev;
- readblock(dev, skb->data, skb->len);
- DPRINTK(3, "%s: received %d byte packet of type %xn",
- dev->name, length,
- (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
- skb->protocol=eth_type_trans(skb,dev);
- netif_rx(skb);
- dev->last_rx = jiffies;
- lp->stats.rx_packets++;
- lp->stats.rx_bytes += length;
- }
- /* The inverse routine to net_open(). */
- static int net_close(struct net_device *dev)
- {
- netif_stop_queue(dev);
-
- writereg(dev, PP_RxCFG, 0);
- writereg(dev, PP_TxCFG, 0);
- writereg(dev, PP_BufCFG, 0);
- writereg(dev, PP_BusCTL, 0);
- free_irq(dev->irq, dev);
- /* Update the statistics here. */
- return 0;
- }
- /* Get the current statistics. This may be called with the card open or
- closed. */
- static struct net_device_stats *
- net_get_stats(struct net_device *dev)
- {
- struct net_local *lp = (struct net_local *)dev->priv;
- unsigned long flags;
- spin_lock_irqsave(&lp->lock, flags);
- /* Update the statistics from the device registers. */
- lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
- lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
- spin_unlock_irqrestore(&lp->lock, flags);
- return &lp->stats;
- }
- static void set_multicast_list(struct net_device *dev)
- {
- struct net_local *lp = (struct net_local *)dev->priv;
- unsigned long flags;
- spin_lock_irqsave(&lp->lock, flags);
- if (dev->flags&IFF_PROMISC) {
- lp->rx_mode = RX_ALL_ACCEPT;
- } else if((dev->flags&IFF_ALLMULTI)||dev->mc_list) {
- /* The multicast-accept list is initialized to accept-all,
- and we rely on higher-level filtering for now. */
- lp->rx_mode = RX_MULTCAST_ACCEPT;
- } else
- lp->rx_mode = 0;
- writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
- /* in promiscuous mode, we accept errored packets,
- so we have to enable interrupts on them also */
- writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
- (lp->rx_mode == RX_ALL_ACCEPT ?
- (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
- spin_unlock_irqrestore(&lp->lock, flags);
- }
- static int set_mac_address(struct net_device *dev, void *addr)
- {
- int i;
- if (netif_running(dev))
- return -EBUSY;
- DPRINTK(1, "%s: Setting MAC address to ", dev->name);
- for (i = 0; i < 6; i++) {
- dev->dev_addr[i] = ((unsigned char *)addr)[i];
- DPRINTK(1, " %2.2x", dev->dev_addr[i]);
- }
- DPRINTK(1, ".n");
- /* set the Ethernet address */
- for (i=0; i < ETH_ALEN/2; i++)
- writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
- return 0;
- }
- #ifdef MODULE
- static struct net_device dev_cs89x0 = {
- "",
- 0, 0, 0, 0,
- 0, 0,
- 0, 0, 0, NULL, NULL };
- /*
- * Support the 'debug' module parm even if we're compiled for non-debug to
- * avoid breaking someone's startup scripts
- */
- static int io = 0xd0000300;
- static int irq = IRQ_LAN;
- static char media[8];
- static int duplex= 0;
- MODULE_PARM(io, "i");
- MODULE_PARM(irq, "i");
- MODULE_PARM(media, "c8");
- MODULE_PARM(duplex, "i");
- MODULE_PARM_DESC(io, "cs89x0 I/O base address");
- MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
- MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
- /* No other value than -1 for duplex seems to be currently interpreted */
- MODULE_PARM_DESC(duplex, "(ignored)");
- MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
- MODULE_LICENSE("GPL");
- EXPORT_NO_SYMBOLS;
- /*
- * media=t - specify media type
- or media=2
- or media=aui
- or medai=auto
- * duplex=0 - specify forced half/full/autonegotiate duplex
- * debug=# - debug level
- * Default Chip Configuration:
- * DMA Burst = enabled
- * IOCHRDY Enabled = enabled
- * UseSA = enabled
- * CS8900 defaults to half-duplex if not specified on command-line
- * CS8920 defaults to autoneg if not specified on command-line
- * Use reset defaults for other config parameters
- * Assumptions:
- * media type specified is supported (circuitry is present)
- * if memory address is > 1MB, then required mem decode hw is present
- * if 10B-2, then agent other than driver will enable DC/DC converter
- (hw or software util)
- */
- static int __init init_cs8900a_s3c2410(void) {
- struct net_local *lp;
- int ret = 0;
- dev_cs89x0.irq = irq;
- dev_cs89x0.base_addr = io;
- dev_cs89x0.init = cs89x0_probe;
- dev_cs89x0.priv = kmalloc(sizeof(struct net_local), GFP_KERNEL);
- if (dev_cs89x0.priv == 0) {
- printk(KERN_ERR "cs89x0.c: Out of memory.n");
- return -ENOMEM;
- }
- memset(dev_cs89x0.priv, 0, sizeof(struct net_local));
- lp = (struct net_local *)dev_cs89x0.priv;
- request_region(dev_cs89x0.base_addr, NETCARD_IO_EXTENT, "cs8900a");
- spin_lock_init(&lp->lock);
- /* boy, they'd better get these right */
- if (!strcmp(media, "rj45"))
- lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
- else if (!strcmp(media, "aui"))
- lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
- else if (!strcmp(media, "bnc"))
- lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
- else
- lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
- if (duplex==-1)
- lp->auto_neg_cnf = AUTO_NEG_ENABLE;
- if (io == 0) {
- printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.n");
- printk(KERN_ERR "cs89x0.c: Append io=0xNNNn");
- ret = -EPERM;
- goto out;
- }
- if (register_netdev(&dev_cs89x0) != 0) {
- printk(KERN_ERR "cs89x0.c: No card found at 0x%xn", io);
- ret = -ENXIO;
- goto out;
- }
- out:
- if (ret)
- kfree(dev_cs89x0.priv);
- return ret;
- }
- static void __exit cleanup_cs8900a_s3c2410(void) {
- if (dev_cs89x0.priv != NULL) {
- /* Free up the private structure, or leak memory :-) */
- unregister_netdev(&dev_cs89x0);
- outw(PP_ChipID, dev_cs89x0.base_addr + ADD_PORT);
- kfree(dev_cs89x0.priv);
- dev_cs89x0.priv = NULL; /* gets re-allocated by cs89x0_probe1 */
- /* If we don't do this, we can't re-insmod it later. */
- release_region(dev_cs89x0.base_addr, NETCARD_IO_EXTENT);
- }
- }
- module_init(init_cs8900a_s3c2410);
- module_exit(cleanup_cs8900a_s3c2410);
- #endif
- /*
- | $Id: cs8900a.c,v 1.1.2.5 2002/10/16 09:08:07 tolkien Exp $
- |
- | Local Variables:
- | mode: c
- | mode: font-lock
- | version-control: t
- | delete-old-versions: t
- | End:
- |
- | -*- End-Of-File -*-
- */