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authorAdrian Bunk <bunk@stusta.de>2007-07-13 07:54:30 +0200
committerJens Axboe <jens.axboe@oracle.com>2007-07-16 15:02:47 +0200
commit56a68a500fcab9e3a9a49ca7fbef14230ab7d144 (patch)
tree025df1861407c76327bb80c118e1a3046032e312 /drivers/net/atari_bionet.c
parent5874c18b105cc7a24972191b7f08a93b1205a425 (diff)
downloadvexpress-lsk-56a68a500fcab9e3a9a49ca7fbef14230ab7d144.tar.gz
more ACSI removal
This patch removes some code that became dead code after the ATARI_ACSI removal. It also indirectly fixes the following bug introduced by commit c2bcf3b8978c291e1b7f6499475c8403a259d4d6: config ATARI_SLM tristate "Atari SLM laser printer support" - depends on ATARI && ATARI_ACSI!=n + depends on ATARI Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/net/atari_bionet.c')
-rw-r--r--drivers/net/atari_bionet.c675
1 files changed, 0 insertions, 675 deletions
diff --git a/drivers/net/atari_bionet.c b/drivers/net/atari_bionet.c
deleted file mode 100644
index 3d87bd2b419..00000000000
--- a/drivers/net/atari_bionet.c
+++ /dev/null
@@ -1,675 +0,0 @@
-/* bionet.c BioNet-100 device driver for linux68k.
- *
- * Version: @(#)bionet.c 1.0 02/06/96
- *
- * Author: Hartmut Laue <laue@ifk-mp.uni-kiel.de>
- * and Torsten Narjes <narjes@ifk-mp.uni-kiel.de>
- *
- * Little adaptions for integration into pl7 by Roman Hodek
- *
- * Some changes in bionet_poll_rx by Karl-Heinz Lohner
- *
- What is it ?
- ------------
- This driver controls the BIONET-100 LAN-Adapter which connects
- an ATARI ST/TT via the ACSI-port to an Ethernet-based network.
-
- This version can be compiled as a loadable module (See the
- compile command at the bottom of this file).
- At load time, you can optionally set the debugging level and the
- fastest response time on the command line of 'insmod'.
-
- 'bionet_debug'
- controls the amount of diagnostic messages:
- 0 : no messages
- >0 : see code for meaning of printed messages
-
- 'bionet_min_poll_time' (always >=1)
- gives the time (in jiffies) between polls. Low values
- increase the system load (beware!)
-
- When loaded, a net device with the name 'bio0' becomes available,
- which can be controlled with the usual 'ifconfig' command.
-
- It is possible to compile this driver into the kernel like other
- (net) drivers. For this purpose, some source files (e.g. config-files
- makefiles, Space.c) must be changed accordingly. (You may refer to
- other drivers how to do it.) In this case, the device will be detected
- at boot time and (probably) appear as 'eth0'.
-
- This code is based on several sources:
- - The driver code for a parallel port ethernet adapter by
- Donald Becker (see file 'atp.c' from the PC linux distribution)
- - The ACSI code by Roman Hodek for the ATARI-ACSI harddisk support
- and DMA handling.
- - Very limited information about moving packets in and out of the
- BIONET-adapter from the TCP package for TOS by BioData GmbH.
-
- Theory of Operation
- -------------------
- Because the ATARI DMA port is usually shared between several
- devices (eg. harddisk, floppy) we cannot block the ACSI bus
- while waiting for interrupts. Therefore we use a polling mechanism
- to fetch packets from the adapter. For the same reason, we send
- packets without checking that the previous packet has been sent to
- the LAN. We rely on the higher levels of the networking code to detect
- missing packets and resend them.
-
- Before we access the ATARI DMA controller, we check if another
- process is using the DMA. If not, we lock the DMA, perform one or
- more packet transfers and unlock the DMA before returning.
- We do not use 'stdma_lock' unconditionally because it is unclear
- if the networking code can be set to sleep, which will happen if
- another (possibly slow) device is using the DMA controller.
-
- The polling is done via timer interrupts which periodically
- 'simulate' an interrupt from the Ethernet adapter. The time (in jiffies)
- between polls varies depending on an estimate of the net activity.
- The allowed range is given by the variable 'bionet_min_poll_time'
- for the lower (fastest) limit and the constant 'MAX_POLL_TIME'
- for the higher (slowest) limit.
-
- Whenever a packet arrives, we switch to fastest response by setting
- the polling time to its lowest limit. If the following poll fails,
- because no packets have arrived, we increase the time for the next
- poll. When the net activity is low, the polling time effectively
- stays at its maximum value, resulting in the lowest load for the
- machine.
- */
-
-#define MAX_POLL_TIME 10
-
-static char version[] =
- "bionet.c:v1.0 06-feb-96 (c) Hartmut Laue.\n";
-
-#include <linux/module.h>
-
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/jiffies.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-
-#include <asm/setup.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/atarihw.h>
-#include <asm/atariints.h>
-#include <asm/atari_acsi.h>
-#include <asm/atari_stdma.h>
-
-
-/* use 0 for production, 1 for verification, >2 for debug
- */
-#ifndef NET_DEBUG
-#define NET_DEBUG 0
-#endif
-/*
- * Global variable 'bionet_debug'. Can be set at load time by 'insmod'
- */
-unsigned int bionet_debug = NET_DEBUG;
-module_param(bionet_debug, int, 0);
-MODULE_PARM_DESC(bionet_debug, "bionet debug level (0-2)");
-MODULE_LICENSE("GPL");
-
-static unsigned int bionet_min_poll_time = 2;
-
-
-/* Information that need to be kept for each board.
- */
-struct net_local {
- struct net_device_stats stats;
- long open_time; /* for debugging */
- int poll_time; /* polling time varies with net load */
-};
-
-static struct nic_pkt_s { /* packet format */
- unsigned char status;
- unsigned char dummy;
- unsigned char l_lo, l_hi;
- unsigned char buffer[3000];
-} *nic_packet;
-unsigned char *phys_nic_packet;
-
-/* Index to functions, as function prototypes.
- */
-static int bionet_open(struct net_device *dev);
-static int bionet_send_packet(struct sk_buff *skb, struct net_device *dev);
-static void bionet_poll_rx(struct net_device *);
-static int bionet_close(struct net_device *dev);
-static struct net_device_stats *net_get_stats(struct net_device *dev);
-static void bionet_tick(unsigned long);
-
-static DEFINE_TIMER(bionet_timer, bionet_tick, 0, 0);
-
-#define STRAM_ADDR(a) (((a) & 0xff000000) == 0)
-
-/* The following routines access the ethernet board connected to the
- * ACSI port via the st_dma chip.
- */
-#define NODE_ADR 0x60
-
-#define C_READ 8
-#define C_WRITE 0x0a
-#define C_GETEA 0x0f
-#define C_SETCR 0x0e
-
-static int
-sendcmd(unsigned int a0, unsigned int mod, unsigned int cmd) {
- unsigned int c;
-
- dma_wd.dma_mode_status = (mod | ((a0) ? 2 : 0) | 0x88);
- dma_wd.fdc_acces_seccount = cmd;
- dma_wd.dma_mode_status = (mod | 0x8a);
-
- if( !acsi_wait_for_IRQ(HZ/2) ) /* wait for cmd ack */
- return -1; /* timeout */
-
- c = dma_wd.fdc_acces_seccount;
- return (c & 0xff);
-}
-
-
-static void
-set_status(int cr) {
- sendcmd(0,0x100,NODE_ADR | C_SETCR); /* CMD: SET CR */
- sendcmd(1,0x100,cr);
-
- dma_wd.dma_mode_status = 0x80;
-}
-
-static int
-get_status(unsigned char *adr) {
- int i,c;
-
- DISABLE_IRQ();
- c = sendcmd(0,0x00,NODE_ADR | C_GETEA); /* CMD: GET ETH ADR*/
- if( c < 0 ) goto gsend;
-
- /* now read status bytes */
-
- for (i=0; i<6; i++) {
- dma_wd.fdc_acces_seccount = 0; /* request next byte */
-
- if( !acsi_wait_for_IRQ(HZ/2) ) { /* wait for cmd ack */
- c = -1;
- goto gsend; /* timeout */
- }
- c = dma_wd.fdc_acces_seccount;
- *adr++ = (unsigned char)c;
- }
- c = 1;
-gsend:
- dma_wd.dma_mode_status = 0x80;
- return c;
-}
-
-static irqreturn_t
-bionet_intr(int irq, void *data) {
- return IRQ_HANDLED;
-}
-
-
-static int
-get_frame(unsigned long paddr, int odd) {
- int c;
- unsigned long flags;
-
- DISABLE_IRQ();
- local_irq_save(flags);
-
- dma_wd.dma_mode_status = 0x9a;
- dma_wd.dma_mode_status = 0x19a;
- dma_wd.dma_mode_status = 0x9a;
- dma_wd.fdc_acces_seccount = 0x04; /* sector count (was 5) */
- dma_wd.dma_lo = (unsigned char)paddr;
- paddr >>= 8;
- dma_wd.dma_md = (unsigned char)paddr;
- paddr >>= 8;
- dma_wd.dma_hi = (unsigned char)paddr;
- local_irq_restore(flags);
-
- c = sendcmd(0,0x00,NODE_ADR | C_READ); /* CMD: READ */
- if( c < 128 ) goto rend;
-
- /* now read block */
-
- c = sendcmd(1,0x00,odd); /* odd flag for address shift */
- dma_wd.dma_mode_status = 0x0a;
-
- if( !acsi_wait_for_IRQ(100) ) { /* wait for DMA to complete */
- c = -1;
- goto rend;
- }
- dma_wd.dma_mode_status = 0x8a;
- dma_wd.dma_mode_status = 0x18a;
- dma_wd.dma_mode_status = 0x8a;
- c = dma_wd.fdc_acces_seccount;
-
- dma_wd.dma_mode_status = 0x88;
- c = dma_wd.fdc_acces_seccount;
- c = 1;
-
-rend:
- dma_wd.dma_mode_status = 0x80;
- udelay(40);
- acsi_wait_for_noIRQ(20);
- return c;
-}
-
-
-static int
-hardware_send_packet(unsigned long paddr, int cnt) {
- unsigned int c;
- unsigned long flags;
-
- DISABLE_IRQ();
- local_irq_save(flags);
-
- dma_wd.dma_mode_status = 0x19a;
- dma_wd.dma_mode_status = 0x9a;
- dma_wd.dma_mode_status = 0x19a;
- dma_wd.dma_lo = (unsigned char)paddr;
- paddr >>= 8;
- dma_wd.dma_md = (unsigned char)paddr;
- paddr >>= 8;
- dma_wd.dma_hi = (unsigned char)paddr;
-
- dma_wd.fdc_acces_seccount = 0x4; /* sector count */
- local_irq_restore(flags);
-
- c = sendcmd(0,0x100,NODE_ADR | C_WRITE); /* CMD: WRITE */
- c = sendcmd(1,0x100,cnt&0xff);
- c = sendcmd(1,0x100,cnt>>8);
-
- /* now write block */
-
- dma_wd.dma_mode_status = 0x10a; /* DMA enable */
- if( !acsi_wait_for_IRQ(100) ) /* wait for DMA to complete */
- goto end;
-
- dma_wd.dma_mode_status = 0x19a; /* DMA disable ! */
- c = dma_wd.fdc_acces_seccount;
-
-end:
- c = sendcmd(1,0x100,0);
- c = sendcmd(1,0x100,0);
-
- dma_wd.dma_mode_status = 0x180;
- udelay(40);
- acsi_wait_for_noIRQ(20);
- return( c & 0x02);
-}
-
-
-/* Check for a network adaptor of this type, and return '0' if one exists.
- */
-struct net_device * __init bionet_probe(int unit)
-{
- struct net_device *dev;
- unsigned char station_addr[6];
- static unsigned version_printed;
- static int no_more_found; /* avoid "Probing for..." printed 4 times */
- int i;
- int err;
-
- if (!MACH_IS_ATARI || no_more_found)
- return ERR_PTR(-ENODEV);
-
- dev = alloc_etherdev(sizeof(struct net_local));
- if (!dev)
- return ERR_PTR(-ENOMEM);
- if (unit >= 0) {
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
- }
- SET_MODULE_OWNER(dev);
-
- printk("Probing for BioNet 100 Adapter...\n");
-
- stdma_lock(bionet_intr, NULL);
- i = get_status(station_addr); /* Read the station address PROM. */
- ENABLE_IRQ();
- stdma_release();
-
- /* Check the first three octets of the S.A. for the manufactor's code.
- */
-
- if( i < 0
- || station_addr[0] != 'B'
- || station_addr[1] != 'I'
- || station_addr[2] != 'O' ) {
- no_more_found = 1;
- printk( "No BioNet 100 found.\n" );
- free_netdev(dev);
- return ERR_PTR(-ENODEV);
- }
-
- if (bionet_debug > 0 && version_printed++ == 0)
- printk(version);
-
- printk("%s: %s found, eth-addr: %02x-%02x-%02x:%02x-%02x-%02x.\n",
- dev->name, "BioNet 100",
- station_addr[0], station_addr[1], station_addr[2],
- station_addr[3], station_addr[4], station_addr[5]);
-
- /* Initialize the device structure. */
-
- nic_packet = (struct nic_pkt_s *)acsi_buffer;
- phys_nic_packet = (unsigned char *)phys_acsi_buffer;
- if (bionet_debug > 0) {
- printk("nic_packet at 0x%p, phys at 0x%p\n",
- nic_packet, phys_nic_packet );
- }
-
- dev->open = bionet_open;
- dev->stop = bionet_close;
- dev->hard_start_xmit = bionet_send_packet;
- dev->get_stats = net_get_stats;
-
- /* Fill in the fields of the device structure with ethernet-generic
- * values. This should be in a common file instead of per-driver.
- */
-
- for (i = 0; i < ETH_ALEN; i++) {
-#if 0
- dev->broadcast[i] = 0xff;
-#endif
- dev->dev_addr[i] = station_addr[i];
- }
- err = register_netdev(dev);
- if (!err)
- return dev;
- free_netdev(dev);
- return ERR_PTR(err);
-}
-
-/* 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
-bionet_open(struct net_device *dev) {
- struct net_local *lp = netdev_priv(dev);
-
- if (bionet_debug > 0)
- printk("bionet_open\n");
- stdma_lock(bionet_intr, NULL);
-
- /* Reset the hardware here.
- */
- set_status(4);
- lp->open_time = 0; /*jiffies*/
- lp->poll_time = MAX_POLL_TIME;
-
- dev->tbusy = 0;
- dev->interrupt = 0;
- dev->start = 1;
-
- stdma_release();
- bionet_timer.data = (long)dev;
- bionet_timer.expires = jiffies + lp->poll_time;
- add_timer(&bionet_timer);
- return 0;
-}
-
-static int
-bionet_send_packet(struct sk_buff *skb, struct net_device *dev) {
- struct net_local *lp = netdev_priv(dev);
- unsigned long flags;
-
- /* Block a timer-based transmit from overlapping. This could better be
- * done with atomic_swap(1, dev->tbusy), but set_bit() works as well.
- */
- local_irq_save(flags);
-
- if (stdma_islocked()) {
- local_irq_restore(flags);
- lp->stats.tx_errors++;
- }
- else {
- int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
- unsigned long buf = virt_to_phys(skb->data);
- int stat;
-
- stdma_lock(bionet_intr, NULL);
- local_irq_restore(flags);
- if( !STRAM_ADDR(buf+length-1) ) {
- skb_copy_from_linear_data(skb, nic_packet->buffer,
- length);
- buf = (unsigned long)&((struct nic_pkt_s *)phys_nic_packet)->buffer;
- }
-
- if (bionet_debug >1) {
- u_char *data = nic_packet->buffer, *p;
- int i;
-
- printk( "%s: TX pkt type 0x%4x from ", dev->name,
- ((u_short *)data)[6]);
-
- for( p = &data[6], i = 0; i < 6; i++ )
- printk("%02x%s", *p++,i != 5 ? ":" : "" );
- printk(" to ");
-
- for( p = data, i = 0; i < 6; i++ )
- printk("%02x%s", *p++,i != 5 ? ":" : "" "\n" );
-
- printk( "%s: ", dev->name );
- printk(" data %02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x"
- " %02x%02x%02x%02x len %d\n",
- data[12], data[13], data[14], data[15], data[16], data[17], data[18], data[19],
- data[20], data[21], data[22], data[23], data[24], data[25], data[26], data[27],
- data[28], data[29], data[30], data[31], data[32], data[33],
- length );
- }
- dma_cache_maintenance(buf, length, 1);
-
- stat = hardware_send_packet(buf, length);
- ENABLE_IRQ();
- stdma_release();
-
- dev->trans_start = jiffies;
- dev->tbusy = 0;
- lp->stats.tx_packets++;
- lp->stats.tx_bytes+=length;
- }
- dev_kfree_skb(skb);
-
- return 0;
-}
-
-/* We have a good packet(s), get it/them out of the buffers.
- */
-static void
-bionet_poll_rx(struct net_device *dev) {
- struct net_local *lp = netdev_priv(dev);
- int boguscount = 10;
- int pkt_len, status;
- unsigned long flags;
-
- local_irq_save(flags);
- /* ++roman: Take care at locking the ST-DMA... This must be done with ints
- * off, since otherwise an int could slip in between the question and the
- * locking itself, and then we'd go to sleep... And locking itself is
- * necessary to keep the floppy_change timer from working with ST-DMA
- * registers. */
- if (stdma_islocked()) {
- local_irq_restore(flags);
- return;
- }
- stdma_lock(bionet_intr, NULL);
- DISABLE_IRQ();
- local_irq_restore(flags);
-
- if( lp->poll_time < MAX_POLL_TIME ) lp->poll_time++;
-
- while(boguscount--) {
- status = get_frame((unsigned long)phys_nic_packet, 0);
-
- if( status == 0 ) break;
-
- /* Good packet... */
-
- dma_cache_maintenance((unsigned long)phys_nic_packet, 1520, 0);
-
- pkt_len = (nic_packet->l_hi << 8) | nic_packet->l_lo;
-
- lp->poll_time = bionet_min_poll_time; /* fast poll */
- if( pkt_len >= 60 && pkt_len <= 1520 ) {
- /* ^^^^ war 1514 KHL */
- /* Malloc up new buffer.
- */
- struct sk_buff *skb = dev_alloc_skb( pkt_len + 2 );
- if (skb == NULL) {
- printk("%s: Memory squeeze, dropping packet.\n",
- dev->name);
- lp->stats.rx_dropped++;
- break;
- }
-
- skb_reserve( skb, 2 ); /* 16 Byte align */
- skb_put( skb, pkt_len ); /* make room */
-
- /* 'skb->data' points to the start of sk_buff data area.
- */
- skb_copy_to_linear_data(skb, nic_packet->buffer,
- pkt_len);
- skb->protocol = eth_type_trans( skb, dev );
- netif_rx(skb);
- dev->last_rx = jiffies;
- lp->stats.rx_packets++;
- lp->stats.rx_bytes+=pkt_len;
-
- /* If any worth-while packets have been received, dev_rint()
- has done a mark_bh(INET_BH) for us and will work on them
- when we get to the bottom-half routine.
- */
-
- if (bionet_debug >1) {
- u_char *data = nic_packet->buffer, *p;
- int i;
-
- printk( "%s: RX pkt type 0x%4x from ", dev->name,
- ((u_short *)data)[6]);
-
-
- for( p = &data[6], i = 0; i < 6; i++ )
- printk("%02x%s", *p++,i != 5 ? ":" : "" );
- printk(" to ");
- for( p = data, i = 0; i < 6; i++ )
- printk("%02x%s", *p++,i != 5 ? ":" : "" "\n" );
-
- printk( "%s: ", dev->name );
- printk(" data %02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x"
- " %02x%02x%02x%02x len %d\n",
- data[12], data[13], data[14], data[15], data[16], data[17], data[18], data[19],
- data[20], data[21], data[22], data[23], data[24], data[25], data[26], data[27],
- data[28], data[29], data[30], data[31], data[32], data[33],
- pkt_len );
- }
- }
- else {
- printk(" Packet has wrong length: %04d bytes\n", pkt_len);
- lp->stats.rx_errors++;
- }
- }
- stdma_release();
- ENABLE_IRQ();
- return;
-}
-
-/* bionet_tick: called by bionet_timer. Reads packets from the adapter,
- * passes them to the higher layers and restarts the timer.
- */
-static void
-bionet_tick(unsigned long data) {
- struct net_device *dev = (struct net_device *)data;
- struct net_local *lp = netdev_priv(dev);
-
- if( bionet_debug > 0 && (lp->open_time++ & 7) == 8 )
- printk("bionet_tick: %ld\n", lp->open_time);
-
- if( !stdma_islocked() ) bionet_poll_rx(dev);
-
- bionet_timer.expires = jiffies + lp->poll_time;
- add_timer(&bionet_timer);
-}
-
-/* The inverse routine to bionet_open().
- */
-static int
-bionet_close(struct net_device *dev) {
- struct net_local *lp = netdev_priv(dev);
-
- if (bionet_debug > 0)
- printk("bionet_close, open_time=%ld\n", lp->open_time);
- del_timer(&bionet_timer);
- stdma_lock(bionet_intr, NULL);
-
- set_status(0);
- lp->open_time = 0;
-
- dev->tbusy = 1;
- dev->start = 0;
-
- stdma_release();
- 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 = netdev_priv(dev);
- return &lp->stats;
-}
-
-
-#ifdef MODULE
-
-static struct net_device *bio_dev;
-
-int init_module(void)
-{
- bio_dev = bionet_probe(-1);
- if (IS_ERR(bio_dev))
- return PTR_ERR(bio_dev);
- return 0;
-}
-
-void cleanup_module(void)
-{
- unregister_netdev(bio_dev);
- free_netdev(bio_dev);
-}
-
-#endif /* MODULE */
-
-/* Local variables:
- * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/include
- -b m68k-linuxaout -Wall -Wstrict-prototypes -O2
- -fomit-frame-pointer -pipe -DMODULE -I../../net/inet -c bionet.c"
- * version-control: t
- * kept-new-versions: 5
- * tab-width: 8
- * End:
- */