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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>
This commit is contained in:
Adrian Bunk 2007-07-13 07:54:30 +02:00 committed by Jens Axboe
parent 5874c18b10
commit 56a68a500f
12 changed files with 0 additions and 2701 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Documentation/m68k/kernel-options.txt
View File

@ -82,13 +82,6 @@ Valid names are:
/dev/fd : -> 0x0200 (floppy disk)
/dev/xda: -> 0x0c00 (first XT disk, unused in Linux/m68k)
/dev/xdb: -> 0x0c40 (second XT disk, unused in Linux/m68k)
/dev/ada: -> 0x1c00 (first ACSI device)
/dev/adb: -> 0x1c10 (second ACSI device)
/dev/adc: -> 0x1c20 (third ACSI device)
/dev/add: -> 0x1c30 (forth ACSI device)
The last four names are available only if the kernel has been compiled
with Atari and ACSI support.
The name must be followed by a decimal number, that stands for the
partition number. Internally, the value of the number is just

6
Documentation/networking/net-modules.txt
View File

@ -146,12 +146,6 @@ at1700.c:
irq = 0
(Probes ports: 0x260, 0x280, 0x2A0, 0x240, 0x340, 0x320, 0x380, 0x300)
atari_bionet.c:
Supports full autoprobing. (m68k/Atari)
atari_pamsnet.c:
Supports full autoprobing. (m68k/Atari)
atarilance.c:
Supports full autoprobing. (m68k/Atari)

11
drivers/block/Kconfig
View File

@ -59,17 +59,6 @@ config AMIGA_Z2RAM
To compile this driver as a module, choose M here: the
module will be called z2ram.
config ATARI_SLM
tristate "Atari SLM laser printer support"
depends on ATARI
help
If you have an Atari SLM laser printer, say Y to include support for
it in the kernel. Otherwise, say N. This driver is also available as
a module ( = code which can be inserted in and removed from the
running kernel whenever you want). The module will be called
acsi_slm. Be warned: the driver needs much ST-RAM and can cause
problems due to that fact!
config BLK_DEV_XD
tristate "XT hard disk support"
depends on ISA && ISA_DMA_API

1
drivers/block/Makefile
View File

@ -9,7 +9,6 @@ obj-$(CONFIG_MAC_FLOPPY) += swim3.o
obj-$(CONFIG_BLK_DEV_FD) += floppy.o
obj-$(CONFIG_AMIGA_FLOPPY) += amiflop.o
obj-$(CONFIG_ATARI_FLOPPY) += ataflop.o
obj-$(CONFIG_ATARI_SLM) += acsi_slm.o
obj-$(CONFIG_AMIGA_Z2RAM) += z2ram.o
obj-$(CONFIG_BLK_DEV_RAM) += rd.o
obj-$(CONFIG_BLK_DEV_LOOP) += loop.o

1032
drivers/block/acsi_slm.c
View File

File diff suppressed because it is too large Load Diff

16
drivers/net/Kconfig
View File

@ -405,22 +405,6 @@ config ATARILANCE
on the AMD Lance chipset: RieblCard (with or without battery), or
PAMCard VME (also the version by Rhotron, with different addresses).
config ATARI_BIONET
tristate "BioNet-100 support"
depends on ATARI && ATARI_ACSI && BROKEN
help
Say Y to include support for BioData's BioNet-100 Ethernet adapter
for the ACSI port. The driver works (has to work...) with a polled
I/O scheme, so it's rather slow :-(
config ATARI_PAMSNET
tristate "PAMsNet support"
depends on ATARI && ATARI_ACSI && BROKEN
help
Say Y to include support for the PAMsNet Ethernet adapter for the
ACSI port ("ACSI node"). The driver works (has to work...) with a
polled I/O scheme, so it's rather slow :-(
config SUN3LANCE
tristate "Sun3/Sun3x on-board LANCE support"
depends on SUN3 || SUN3X

2
drivers/net/Makefile
View File

@ -180,8 +180,6 @@ obj-$(CONFIG_MIPS_SIM_NET) += mipsnet.o
obj-$(CONFIG_SGI_IOC3_ETH) += ioc3-eth.o
obj-$(CONFIG_DECLANCE) += declance.o
obj-$(CONFIG_ATARILANCE) += atarilance.o
obj-$(CONFIG_ATARI_BIONET) += atari_bionet.o
obj-$(CONFIG_ATARI_PAMSNET) += atari_pamsnet.o
obj-$(CONFIG_A2065) += a2065.o
obj-$(CONFIG_HYDRA) += hydra.o
obj-$(CONFIG_ARIADNE) += ariadne.o

8
drivers/net/Space.c
View File

@ -75,8 +75,6 @@ extern struct net_device *atarilance_probe(int unit);
extern struct net_device *sun3lance_probe(int unit);
extern struct net_device *sun3_82586_probe(int unit);
extern struct net_device *apne_probe(int unit);
extern struct net_device *bionet_probe(int unit);
extern struct net_device *pamsnet_probe(int unit);
extern struct net_device *cs89x0_probe(int unit);
extern struct net_device *hplance_probe(int unit);
extern struct net_device *bagetlance_probe(int unit);
@ -264,12 +262,6 @@ static struct devprobe2 m68k_probes[] __initdata = {
#ifdef CONFIG_APNE /* A1200 PCMCIA NE2000 */
{apne_probe, 0},
#endif
#ifdef CONFIG_ATARI_BIONET /* Atari Bionet Ethernet board */
{bionet_probe, 0},
#endif
#ifdef CONFIG_ATARI_PAMSNET /* Atari PAMsNet Ethernet board */
{pamsnet_probe, 0},
#endif
#ifdef CONFIG_MVME147_NET /* MVME147 internal Ethernet */
{mvme147lance_probe, 0},
#endif

675
drivers/net/atari_bionet.c
View File

@ -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:
*/

878
drivers/net/atari_pamsnet.c
View File

@ -1,878 +0,0 @@
/* atari_pamsnet.c PAMsNet device driver for linux68k.
*
* Version: @(#)PAMsNet.c 0.2ß 03/31/96
*
* Author: Torsten Lang <Torsten.Lang@ap.physik.uni-giessen.de>
* <Torsten.Lang@jung.de>
*
* This driver is based on my driver PAMSDMA.c for MiNT-Net and
* on the driver bionet.c written by
* 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
*
What is it ?
------------
This driver controls the PAMsNet 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'.
'pamsnet_debug'
controls the amount of diagnostic messages:
0 : no messages
>0 : see code for meaning of printed messages
'pamsnet_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 'eth?' 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'.
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 =
"pamsnet.c:v0.2beta 30-mar-96 (c) Torsten Lang.\n";
#include <linux/module.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/bitops.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <linux/errno.h>
#include <asm/atarihw.h>
#include <asm/atariints.h>
#include <asm/atari_stdma.h>
#include <asm/atari_acsi.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#undef READ
#undef WRITE
/* use 0 for production, 1 for verification, >2 for debug
*/
#ifndef NET_DEBUG
#define NET_DEBUG 0
#endif
/*
* Global variable 'pamsnet_debug'. Can be set at load time by 'insmod'
*/
unsigned int pamsnet_debug = NET_DEBUG;
module_param(pamsnet_debug, int, 0);
MODULE_PARM_DESC(pamsnet_debug, "pamsnet debug enable (0-1)");
MODULE_LICENSE("GPL");
static unsigned int pamsnet_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 buffer[2048];
} *nic_packet = 0;
unsigned char *phys_nic_packet;
typedef unsigned char HADDR[6]; /* 6-byte hardware address of lance */
/* Index to functions, as function prototypes.
*/
static void start (int target);
static int stop (int target);
static int testpkt (int target);
static int sendpkt (int target, unsigned char *buffer, int length);
static int receivepkt (int target, unsigned char *buffer);
static int inquiry (int target, unsigned char *buffer);
static HADDR *read_hw_addr(int target, unsigned char *buffer);
static void setup_dma (void *address, unsigned rw_flag, int num_blocks);
static int send_first (int target, unsigned char byte);
static int send_1_5 (int lun, unsigned char *command, int dma);
static int get_status (void);
static int calc_received (void *start_address);
static int pamsnet_open(struct net_device *dev);
static int pamsnet_send_packet(struct sk_buff *skb, struct net_device *dev);
static void pamsnet_poll_rx(struct net_device *);
static int pamsnet_close(struct net_device *dev);
static struct net_device_stats *net_get_stats(struct net_device *dev);
static void pamsnet_tick(unsigned long);
static irqreturn_t pamsnet_intr(int irq, void *data);
static DEFINE_TIMER(pamsnet_timer, pamsnet_tick, 0, 0);
#define STRAM_ADDR(a) (((a) & 0xff000000) == 0)
typedef struct
{
unsigned char reserved1[0x38];
HADDR hwaddr;
unsigned char reserved2[0x1c2];
} DMAHWADDR;
/*
* Definitions of commands understood by the PAMs DMA adaptor.
*
* In general the DMA adaptor uses LUN 0, 5, 6 and 7 on one ID changeable
* by the PAM's Net software.
*
* LUN 0 works as a harddisk. You can boot the PAM's Net driver there.
* LUN 5 works as a harddisk and lets you access the RAM and some I/O HW
* area. In sector 0, bytes 0x38-0x3d you find the ethernet HW address
* of the adaptor.
* LUN 6 works as a harddisk and lets you access the firmware ROM.
* LUN 7 lets you send and receive packets.
*
* Some commands like the INQUIRY command work identical on all used LUNs.
*
* UNKNOWN1 seems to read some data.
* Command length is 6 bytes.
* UNKNOWN2 seems to read some data (command byte 1 must be !=0). The
* following bytes seem to be something like an allocation length.
* Command length is 6 bytes.
* READPKT reads a packet received by the DMA adaptor.
* Command length is 6 bytes.
* WRITEPKT sends a packet transferred by the following DMA phase. The length
* of the packet is transferred in command bytes 3 and 4.
* The adaptor automatically replaces the src hw address in an ethernet
* packet by its own hw address.
* Command length is 6 bytes.
* INQUIRY has the same function as the INQUIRY command supported by harddisks
* and other SCSI devices. It lets you detect which device you found
* at a given address.
* Command length is 6 bytes.
* START initializes the DMA adaptor. After this command it is able to send
* and receive packets. There is no status byte returned!
* Command length is 1 byte.
* NUMPKTS gives back the number of received packets waiting in the queue in
* the status byte.
* Command length is 1 byte.
* UNKNOWN3
* UNKNOWN4 Function of these three commands is unknown.
* UNKNOWN5 The command length of these three commands is 1 byte.
* DESELECT immediately deselects the DMA adaptor. May important with interrupt
* driven operation.
* Command length is 1 byte.
* STOP resets the DMA adaptor. After this command packets can no longer
* be received or transferred.
* Command length is 6 byte.
*/
enum {UNKNOWN1=3, READPKT=8, UNKNOWN2, WRITEPKT=10, INQUIRY=18, START,
NUMPKTS=22, UNKNOWN3, UNKNOWN4, UNKNOWN5, DESELECT, STOP};
#define READSECTOR READPKT
#define WRITESECTOR WRITEPKT
u_char *inquire8="MV PAM's NET/GK";
#define DMALOW dma_wd.dma_lo
#define DMAMID dma_wd.dma_md
#define DMAHIGH dma_wd.dma_hi
#define DACCESS dma_wd.fdc_acces_seccount
#define MFP_GPIP mfp.par_dt_reg
/* Some useful functions */
#define INT (!(MFP_GPIP & 0x20))
#define DELAY ({MFP_GPIP; MFP_GPIP; MFP_GPIP;})
#define WRITEMODE(value) \
({ u_short dummy = value; \
__asm__ volatile("movew %0, 0xFFFF8606" : : "d"(dummy)); \
DELAY; \
})
#define WRITEBOTH(value1, value2) \
({ u_long dummy = (u_long)(value1)<<16 | (u_short)(value2); \
__asm__ volatile("movel %0, 0xFFFF8604" : : "d"(dummy)); \
DELAY; \
})
/* Definitions for DMODE */
#define READ 0x000
#define WRITE 0x100
#define DMA_FDC 0x080
#define DMA_ACSI 0x000
#define DMA_DISABLE 0x040
#define SEC_COUNT 0x010
#define DMA_WINDOW 0x000
#define REG_ACSI 0x008
#define REG_FDC 0x000
#define A1 0x002
/* Timeout constants */
#define TIMEOUTCMD HZ/2 /* ca. 500ms */
#define TIMEOUTDMA HZ /* ca. 1s */
#define COMMAND_DELAY 500 /* ca. 0.5ms */
unsigned rw;
int lance_target = -1;
int if_up = 0;
/* The following routines access the ethernet board connected to the
* ACSI port via the st_dma chip.
*/
/* The following lowlevel routines work on physical addresses only and assume
* that eventually needed buffers are
* - completely located in ST RAM
* - are contigous in the physical address space
*/
/* Setup the DMA counter */
static void
setup_dma (void *address, unsigned rw_flag, int num_blocks)
{
WRITEMODE((unsigned) rw_flag | DMA_FDC | SEC_COUNT | REG_ACSI |
A1);
WRITEMODE((unsigned)(rw_flag ^ WRITE) | DMA_FDC | SEC_COUNT | REG_ACSI |
A1);
WRITEMODE((unsigned) rw_flag | DMA_FDC | SEC_COUNT | REG_ACSI |
A1);
DMALOW = (unsigned char)((unsigned long)address & 0xFF);
DMAMID = (unsigned char)(((unsigned long)address >> 8) & 0xFF);
DMAHIGH = (unsigned char)(((unsigned long)address >> 16) & 0xFF);
WRITEBOTH((unsigned)num_blocks & 0xFF,
rw_flag | DMA_FDC | DMA_WINDOW | REG_ACSI | A1);
rw = rw_flag;
}
/* Send the first byte of an command block */
static int
send_first (int target, unsigned char byte)
{
rw = READ;
acsi_delay_end(COMMAND_DELAY);
/*
* wake up ACSI
*/
WRITEMODE(DMA_FDC | DMA_WINDOW | REG_ACSI);
/*
* write command byte
*/
WRITEBOTH((target << 5) | (byte & 0x1F), DMA_FDC |
DMA_WINDOW | REG_ACSI | A1);
return (!acsi_wait_for_IRQ(TIMEOUTCMD));
}
/* Send the rest of an command block */
static int
send_1_5 (int lun, unsigned char *command, int dma)
{
int i, j;
for (i=0; i<5; i++) {
WRITEBOTH((!i ? (((lun & 0x7) << 5) | (command[i] & 0x1F))
: command[i]),
rw | REG_ACSI | DMA_WINDOW |
((i < 4) ? DMA_FDC
: (dma ? DMA_ACSI
: DMA_FDC)) | A1);
if (i < 4 && (j = !acsi_wait_for_IRQ(TIMEOUTCMD)))
return (j);
}
return (0);
}
/* Read a status byte */
static int
get_status (void)
{
WRITEMODE(DMA_FDC | DMA_WINDOW | REG_ACSI | A1);
acsi_delay_start();
return ((int)(DACCESS & 0xFF));
}
/* Calculate the number of received bytes */
static int
calc_received (void *start_address)
{
return (int)(
(((unsigned long)DMAHIGH << 16) | ((unsigned)DMAMID << 8) | DMALOW)
- (unsigned long)start_address);
}
/* The following midlevel routines still work on physical addresses ... */
/* start() starts the PAM's DMA adaptor */
static void
start (int target)
{
send_first(target, START);
}
/* stop() stops the PAM's DMA adaptor and returns a value of zero in case of success */
static int
stop (int target)
{
int ret = -1;
unsigned char cmd_buffer[5];
if (send_first(target, STOP))
goto bad;
cmd_buffer[0] = cmd_buffer[1] = cmd_buffer[2] =
cmd_buffer[3] = cmd_buffer[4] = 0;
if (send_1_5(7, cmd_buffer, 0) ||
!acsi_wait_for_IRQ(TIMEOUTDMA) ||
get_status())
goto bad;
ret = 0;
bad:
return (ret);
}
/* testpkt() returns the number of received packets waiting in the queue */
static int
testpkt(int target)
{
int ret = -1;
if (send_first(target, NUMPKTS))
goto bad;
ret = get_status();
bad:
return (ret);
}
/* inquiry() returns 0 when PAM's DMA found, -1 when timeout, -2 otherwise */
/* Please note: The buffer is for internal use only but must be defined! */
static int
inquiry (int target, unsigned char *buffer)
{
int ret = -1;
unsigned char *vbuffer = phys_to_virt((unsigned long)buffer);
unsigned char cmd_buffer[5];
if (send_first(target, INQUIRY))
goto bad;
setup_dma(buffer, READ, 1);
vbuffer[8] = vbuffer[27] = 0; /* Avoid confusion with previous read data */
cmd_buffer[0] = cmd_buffer[1] = cmd_buffer[2] = cmd_buffer[4] = 0;
cmd_buffer[3] = 48;
if (send_1_5(5, cmd_buffer, 1) ||
!acsi_wait_for_IRQ(TIMEOUTDMA) ||
get_status() ||
(calc_received(buffer) < 32))
goto bad;
dma_cache_maintenance((unsigned long)(buffer+8), 20, 0);
if (memcmp(inquire8, vbuffer+8, 20))
goto bad;
ret = 0;
bad:
if (!!NET_DEBUG) {
vbuffer[8+20]=0;
printk("inquiry of target %d: %s\n", target, vbuffer+8);
}
return (ret);
}
/*
* read_hw_addr() reads the sector containing the hwaddr and returns
* a pointer to it (virtual address!) or 0 in case of an error
*/
static HADDR
*read_hw_addr(int target, unsigned char *buffer)
{
HADDR *ret = 0;
unsigned char cmd_buffer[5];
if (send_first(target, READSECTOR))
goto bad;
setup_dma(buffer, READ, 1);
cmd_buffer[0] = cmd_buffer[1] = cmd_buffer[2] = cmd_buffer[4] = 0;
cmd_buffer[3] = 1;
if (send_1_5(5, cmd_buffer, 1) ||
!acsi_wait_for_IRQ(TIMEOUTDMA) ||
get_status())
goto bad;
ret = phys_to_virt((unsigned long)&(((DMAHWADDR *)buffer)->hwaddr));
dma_cache_maintenance((unsigned long)buffer, 512, 0);
bad:
return (ret);
}
static irqreturn_t
pamsnet_intr(int irq, void *data)
{
return IRQ_HANDLED;
}
/* receivepkt() loads a packet to a given buffer and returns its length */
static int
receivepkt (int target, unsigned char *buffer)
{
int ret = -1;
unsigned char cmd_buffer[5];
if (send_first(target, READPKT))
goto bad;
setup_dma(buffer, READ, 3);
cmd_buffer[0] = cmd_buffer[1] = cmd_buffer[2] = cmd_buffer[4] = 0;
cmd_buffer[3] = 3;
if (send_1_5(7, cmd_buffer, 1) ||
!acsi_wait_for_IRQ(TIMEOUTDMA) ||
get_status())
goto bad;
ret = calc_received(buffer);
bad:
return (ret);
}
/* sendpkt() sends a packet and returns a value of zero when the packet was sent
successfully */
static int
sendpkt (int target, unsigned char *buffer, int length)
{
int ret = -1;
unsigned char cmd_buffer[5];
if (send_first(target, WRITEPKT))
goto bad;
setup_dma(buffer, WRITE, 3);
cmd_buffer[0] = cmd_buffer[1] = cmd_buffer[4] = 0;
cmd_buffer[2] = length >> 8;
cmd_buffer[3] = length & 0xFF;
if (send_1_5(7, cmd_buffer, 1) ||
!acsi_wait_for_IRQ(TIMEOUTDMA) ||
get_status())
goto bad;
ret = 0;
bad:
return (ret);
}
/* The following higher level routines work on virtual addresses and convert them to
* physical addresses when passed to the lowlevel routines. It's up to the higher level
* routines to copy data from Alternate RAM to ST RAM if neccesary!
*/
/* Check for a network adaptor of this type, and return '0' if one exists.
*/
struct net_device * __init pamsnet_probe (int unit)
{
struct net_device *dev;
int i;
HADDR *hwaddr;
int err;
unsigned char station_addr[6];
static unsigned version_printed;
/* avoid "Probing for..." printed 4 times - the driver is supporting only one adapter now! */
static int no_more_found;
if (no_more_found)
return ERR_PTR(-ENODEV);
no_more_found = 1;
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 PAM's Net/GK Adapter...\n");
/* Allocate the DMA buffer here since we need it for probing! */
nic_packet = (struct nic_pkt_s *)acsi_buffer;
phys_nic_packet = (unsigned char *)phys_acsi_buffer;
if (pamsnet_debug > 0) {
printk("nic_packet at 0x%p, phys at 0x%p\n",
nic_packet, phys_nic_packet );
}
stdma_lock(pamsnet_intr, NULL);
DISABLE_IRQ();
for (i=0; i<8; i++) {
/* Do two inquiries to cover cases with strange equipment on previous ID */
/* blocking the ACSI bus (like the SLMC804 laser printer controller... */
inquiry(i, phys_nic_packet);
if (!inquiry(i, phys_nic_packet)) {
lance_target = i;
break;
}
}
if (!!NET_DEBUG)
printk("ID: %d\n",i);
if (lance_target >= 0) {
if (!(hwaddr = read_hw_addr(lance_target, phys_nic_packet)))
lance_target = -1;
else
memcpy (station_addr, hwaddr, ETH_ALEN);
}
ENABLE_IRQ();
stdma_release();
if (lance_target < 0) {
printk("No PAM's Net/GK found.\n");
free_netdev(dev);
return ERR_PTR(-ENODEV);
}
if (pamsnet_debug > 0 && version_printed++ == 0)
printk(version);
printk("%s: %s found on target %01d, eth-addr: %02x:%02x:%02x:%02x:%02x:%02x.\n",
dev->name, "PAM's Net/GK", lance_target,
station_addr[0], station_addr[1], station_addr[2],
station_addr[3], station_addr[4], station_addr[5]);
/* Initialize the device structure. */
dev->open = pamsnet_open;
dev->stop = pamsnet_close;
dev->hard_start_xmit = pamsnet_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
pamsnet_open(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
if (pamsnet_debug > 0)
printk("pamsnet_open\n");
stdma_lock(pamsnet_intr, NULL);
DISABLE_IRQ();
/* Reset the hardware here.
*/
if (!if_up)
start(lance_target);
if_up = 1;
lp->open_time = 0; /*jiffies*/
lp->poll_time = MAX_POLL_TIME;
dev->tbusy = 0;
dev->interrupt = 0;
dev->start = 1;
ENABLE_IRQ();
stdma_release();
pamsnet_timer.data = (long)dev;
pamsnet_timer.expires = jiffies + lp->poll_time;
add_timer(&pamsnet_timer);
return 0;
}
static int
pamsnet_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(pamsnet_intr, NULL);
DISABLE_IRQ();
local_irq_restore(flags);
if( !STRAM_ADDR(buf+length-1) ) {
skb_copy_from_linear_data(skb, nic_packet->buffer,
length);
buf = (unsigned long)phys_nic_packet;
}
dma_cache_maintenance(buf, length, 1);
stat = sendpkt(lance_target, (unsigned char *)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
pamsnet_poll_rx(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
int boguscount;
int pkt_len;
struct sk_buff *skb;
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(pamsnet_intr, NULL);
DISABLE_IRQ();
local_irq_restore(flags);
boguscount = testpkt(lance_target);
if( lp->poll_time < MAX_POLL_TIME ) lp->poll_time++;
while(boguscount--) {
pkt_len = receivepkt(lance_target, phys_nic_packet);
if( pkt_len < 60 ) break;
/* Good packet... */
dma_cache_maintenance((unsigned long)phys_nic_packet, pkt_len, 0);
lp->poll_time = pamsnet_min_poll_time; /* fast poll */
if( pkt_len >= 60 && pkt_len <= 2048 ) {
if (pkt_len > 1514)
pkt_len = 1514;
/* Malloc up new buffer.
*/
skb = alloc_skb(pkt_len, GFP_ATOMIC);
if (skb == NULL) {
printk("%s: Memory squeeze, dropping packet.\n",
dev->name);
lp->stats.rx_dropped++;
break;
}
skb->len = pkt_len;
skb->dev = dev;
/* 'skb->data' points to the start of sk_buff data area.
*/
skb_copy_to_linear_data(skb, nic_packet->buffer,
pkt_len);
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.
*/
ENABLE_IRQ();
stdma_release();
return;
}
/* pamsnet_tick: called by pamsnet_timer. Reads packets from the adapter,
* passes them to the higher layers and restarts the timer.
*/
static void
pamsnet_tick(unsigned long data)
{
struct net_device *dev = (struct net_device *)data;
struct net_local *lp = netdev_priv(dev);
if( pamsnet_debug > 0 && (lp->open_time++ & 7) == 8 )
printk("pamsnet_tick: %ld\n", lp->open_time);
pamsnet_poll_rx(dev);
pamsnet_timer.expires = jiffies + lp->poll_time;
add_timer(&pamsnet_timer);
}
/* The inverse routine to pamsnet_open().
*/
static int
pamsnet_close(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
if (pamsnet_debug > 0)
printk("pamsnet_close, open_time=%ld\n", lp->open_time);
del_timer(&pamsnet_timer);
stdma_lock(pamsnet_intr, NULL);
DISABLE_IRQ();
if (if_up)
stop(lance_target);
if_up = 0;
lp->open_time = 0;
dev->tbusy = 1;
dev->start = 0;
ENABLE_IRQ();
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 *pam_dev;
int init_module(void)
{
pam_dev = pamsnet_probe(-1);
if (IS_ERR(pam_dev))
return PTR_ERR(pam_dev);
return 0;
}
void cleanup_module(void)
{
unregister_netdev(pam_dev);
free_netdev(pam_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 atari_pamsnet.c"
* version-control: t
* kept-new-versions: 5
* tab-width: 8
* End:
*/

28
include/asm-m68k/atari_SLM.h
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@ -1,28 +0,0 @@
#ifndef _ATARI_SLM_H
#define _ATARI_SLM_H
/* Atari SLM laser printer specific ioctls */
#define SLMIOGSTAT 0xa100
#define SLMIOGPSIZE 0xa101
#define SLMIOGMFEED 0xa102
#define SLMIORESET 0xa140
#define SLMIOSPSIZE 0xa181
#define SLMIOSMFEED 0xa182
/* Status returning structure (SLMIOGSTAT) */
struct SLM_status {
int stat; /* numeric status code */
char str[40]; /* status string */
};
/* Paper size structure (SLMIO[GS]PSIZE) */
struct SLM_paper_size {
int width;
int height;
};
#endif /* _ATARI_SLM_H */

37
include/asm-m68k/atari_acsi.h
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@ -1,37 +0,0 @@
#ifndef _ASM_ATARI_ACSI_H
#define _ASM_ATARI_ACSI_H
/* Functions exported by drivers/block/acsi.c */
void acsi_delay_start( void );
void acsi_delay_end( long usec );
int acsi_wait_for_IRQ( unsigned timeout );
int acsi_wait_for_noIRQ( unsigned timeout );
int acsicmd_nodma( const char *cmd, int enable);
int acsi_getstatus( void );
int acsi_extstatus( char *buffer, int cnt );
void acsi_end_extstatus( void );
int acsi_extcmd( unsigned char *buffer, int cnt );
/* The ACSI buffer is guarantueed to reside in ST-RAM and may be used by other
* drivers that work on the ACSI bus, too. It's data are valid only as long as
* the ST-DMA is locked. */
extern char *acsi_buffer;
extern unsigned long phys_acsi_buffer;
/* Utility macros */
/* Send one data byte over the bus and set mode for next operation
* with one move.l -- Atari recommends this...
*/
#define DMA_LONG_WRITE(data,mode) \
do { \
*((unsigned long *)&dma_wd.fdc_acces_seccount) = \
((data)<<16) | (mode); \
} while(0)
#define ENABLE_IRQ() atari_turnon_irq( IRQ_MFP_ACSI )
#define DISABLE_IRQ() atari_turnoff_irq( IRQ_MFP_ACSI )
#endif /* _ASM_ATARI_ACSI_H */