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Commit c2ed08fa authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Linus Torvalds
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[PATCH] mac8390 Ethernet 

The Daynaport driver was superseded by the mac8390 driver (from Ray Knight)
parent f5539ad0
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drivers/net/Makefile
View file @ c2ed08fa
......@@ -76,7 +76,7 @@ obj-$(CONFIG_NET) += Space.o setup.o net_init.o loopback.o
obj-$(CONFIG_SEEQ8005) += seeq8005.o
obj-$(CONFIG_ETHERTAP) += ethertap.o
obj-$(CONFIG_NET_SB1000) += sb1000.o
obj-$(CONFIG_MAC8390) += daynaport.o 8390.o
obj-$(CONFIG_MAC8390) += mac8390.o 8390.o
obj-$(CONFIG_APNE) += apne.o 8390.o
obj-$(CONFIG_PCMCIA_PCNET) += 8390.o
obj-$(CONFIG_SHAPER) += shaper.o
......
drivers/net/daynaport.c deleted 100644 → 0
View file @ f5539ad0
/* daynaport.c: A Macintosh 8390 based ethernet driver for linux. */
/*
Derived from code:
Written 1993-94 by Donald Becker.
Copyright 1993 United States Government as represented by the
Director, National Security Agency.
This software may be used and distributed according to the terms
of the GNU General Public License, incorporated herein by reference.
TODO:
The block output routines may be wrong for non Dayna
cards
Fix this driver so that it will attempt to use the info
(i.e. iobase, iosize) given to it by the new and improved
NuBus code.
Despite its misleading filename, this driver is not Dayna-specific
anymore. */
/* Cabletron E6100 card support added by Tony Mantler (eek@escape.ca) April 1999 */
static const char *version =
"daynaport.c: v0.02 1999-05-17 Alan Cox (Alan.Cox@linux.org) and others\n";
static int version_printed;
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/nubus.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/hwtest.h>
#include <asm/macints.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include "8390.h"
static int ns8390_probe1(struct net_device *dev, int word16, char *name, int id,
int prom, struct nubus_dev *ndev);
static int ns8390_open(struct net_device *dev);
static void ns8390_no_reset(struct net_device *dev);
static int ns8390_close_card(struct net_device *dev);
/* Interlan */
static void interlan_reset(struct net_device *dev);
/* Dayna */
static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
int ring_page);
static void dayna_block_input(struct net_device *dev, int count,
struct sk_buff *skb, int ring_offset);
static void dayna_block_output(struct net_device *dev, int count,
const unsigned char *buf, const int start_page);
/* Sane (32-bit chunk memory read/write) */
static void sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
int ring_page);
static void sane_block_input(struct net_device *dev, int count,
struct sk_buff *skb, int ring_offset);
static void sane_block_output(struct net_device *dev, int count,
const unsigned char *buf, const int start_page);
/* Slow Sane (16-bit chunk memory read/write) */
static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
int ring_page);
static void slow_sane_block_input(struct net_device *dev, int count,
struct sk_buff *skb, int ring_offset);
static void slow_sane_block_output(struct net_device *dev, int count,
const unsigned char *buf, const int start_page);
#define WD_START_PG 0x00 /* First page of TX buffer */
#define WD03_STOP_PG 0x20 /* Last page +1 of RX ring */
#define WD13_STOP_PG 0x40 /* Last page +1 of RX ring */
#define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */
#define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */
#define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG /* First page of TX buffer */
#define DAYNA_MAC_BASE 0xf0007
#define DAYNA_8390_BASE 0x80000 /* 3 */
#define DAYNA_8390_MEM 0x00000
#define DAYNA_MEMSIZE 0x04000 /* First word of each long ! */
#define APPLE_8390_BASE 0xE0000
#define APPLE_8390_MEM 0xD0000
#define APPLE_MEMSIZE 8192 /* FIXME: need to dynamically check */
#define KINETICS_MAC_BASE 0xf0004 /* first byte of each long */
#define KINETICS_8390_BASE 0x80000
#define KINETICS_8390_MEM 0x00000 /* first word of each long */
#define KINETICS_MEMSIZE 8192 /* FIXME: need to dynamically check */
/*#define KINETICS_MEMSIZE (0x10000/2) * CSA: on the board I have, at least */
#define CABLETRON_8390_BASE 0x90000
#define CABLETRON_8390_MEM 0x00000
static int test_8390(volatile char *ptr, int scale)
{
int regd;
int v;
if(hwreg_present(&ptr[0x00])==0)
return -EIO;
if(hwreg_present(&ptr[0x0D<<scale])==0)
return -EIO;
if(hwreg_present(&ptr[0x0D<<scale])==0)
return -EIO;
ptr[0x00]=E8390_NODMA+E8390_PAGE1+E8390_STOP;
regd=ptr[0x0D<<scale];
ptr[0x0D<<scale]=0xFF;
ptr[0x00]=E8390_NODMA+E8390_PAGE0;
v=ptr[0x0D<<scale];
if(ptr[0x0D<<scale]!=0)
{
ptr[0x0D<<scale]=regd;
return -ENODEV;
}
/* printk("NS8390 found at %p scaled %d\n", ptr,scale);*/
return 0;
}
/*
* Identify the species of NS8390 card/driver we need
*/
enum mac8390_type {
NS8390_DAYNA,
NS8390_INTERLAN,
NS8390_KINETICS,
NS8390_APPLE,
NS8390_FARALLON,
NS8390_ASANTE,
NS8390_CABLETRON
};
static int __init ns8390_ident(struct nubus_dev* ndev)
{
/* This really needs to be tested and tested hard. */
/* Summary of what we know so far --
* SW: 0x0104 -- asante, 16 bit, back4_offsets
* SW: 0x010b -- daynaport, 16 bit, fwrd4_offsets
* SW: 0x010c -- farallon, 16 bit, back4_offsets, no long word access
* SW: 0x011a -- focus, [no details yet]
* SW: ?????? -- interlan, 16 bit, back4_offsets, funny reset
* SW: ?????? -- kinetics, 8 bit, back4_offsets
* -- so i've this hypothesis going that says DrSW&1 says whether the
* map is forward or backwards -- and maybe DrSW&256 says what the
* register spacing is -- for all cards that report a DrSW in some
* range.
* This would allow the "apple compatible" driver to drive many
* seemingly different types of cards. More DrSW info is needed
* to investigate this properly. [CSA, 21-May-1999]
*/
/* Dayna ex Kinetics board */
if(ndev->dr_sw == NUBUS_DRSW_DAYNA)
return NS8390_DAYNA;
if(ndev->dr_sw == NUBUS_DRSW_ASANTE)
return NS8390_ASANTE;
if(ndev->dr_sw == NUBUS_DRSW_FARALLON) /* farallon or sonic systems */
return NS8390_FARALLON;
if(ndev->dr_sw == NUBUS_DRSW_KINETICS)
return NS8390_KINETICS;
/* My ATI Engineering card with this combination crashes the */
/* driver trying to xmit packets. Best not touch it for now. */
/* - 1999-05-20 (funaho@jurai.org) */
if(ndev->dr_sw == NUBUS_DRSW_FOCUS)
return -1;
/* Check the HW on this one, because it shares the same DrSW as
the on-board SONIC chips */
if(ndev->dr_hw == NUBUS_DRHW_CABLETRON)
return NS8390_CABLETRON;
/* does anyone have one of these? */
if(ndev->dr_hw == NUBUS_DRHW_INTERLAN)
return NS8390_INTERLAN;
/* FIXME: what do genuine Apple boards look like? */
return -1;
}
/*
* Memory probe for 8390 cards
*/
static int __init apple_8390_mem_probe(volatile unsigned short *p)
{
int i, j;
/*
* Algorithm.
* 1. Check each block size of memory doesn't fault
* 2. Write a value to it
* 3. Check all previous blocks are unaffected
*/
for(i=0;i<2;i++)
{
volatile unsigned short *m=p+4096*i;
/* Unwriteable - we have a fully decoded card and the
RAM end located */
if(hwreg_present(m)==0)
return 8192*i;
*m=0xA5A0|i;
for(j=0;j<i;j++)
{
/* Partial decode and wrap ? */
if(p[4096*j]!=(0xA5A0|j))
{
/* This is the first misdecode, so it had
one less page than we tried */
return 8192*i;
}
j++;
}
/* Ok it still decodes.. move on 8K */
}
/*
* We don't look past 16K. That should cover most cards
* and above 16K there isnt really any gain.
*/
return 16384;
}
/*
* Probe for 8390 cards.
* The ns8390_probe1() routine initializes the card and fills the
* station address field.
*
* The NuBus interface has changed! We now scan for these somewhat
* like how the PCI and Zorro drivers do. It's not clear whether
* this is actually better, but it makes things more consistent.
*
* dev->mem_start points
* at the memory ring, dev->mem_end gives the end of it.
*/
int __init mac8390_probe(struct net_device *dev)
{
static int slots;
volatile unsigned short *i;
volatile unsigned char *p;
int plen;
int id;
static struct nubus_dev* ndev;
/* Find the first card that hasn't already been seen */
while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
NUBUS_TYPE_ETHERNET, ndev)) != NULL) {
/* Have we seen it already? */
if (slots & (1<<ndev->board->slot))
continue;
slots |= 1<<ndev->board->slot;
/* Is it one of ours? */
if ((id = ns8390_ident(ndev)) != -1)
break;
}
/* Hm. No more cards, then */
if (ndev == NULL)
return -ENODEV;
dev = init_etherdev(dev, 0);
if (!dev)
return -ENOMEM;
SET_MODULE_OWNER(dev);
if (!version_printed) {
printk(KERN_INFO "%s", version);
version_printed = 1;
}
/*
* Dayna specific init
*/
if(id==NS8390_DAYNA)
{
dev->base_addr = (int)(ndev->board->slot_addr+DAYNA_8390_BASE);
dev->mem_start = (int)(ndev->board->slot_addr+DAYNA_8390_MEM);
dev->mem_end = dev->mem_start+DAYNA_MEMSIZE; /* 8K it seems */
printk(KERN_INFO "%s: daynaport. testing board: ", dev->name);
printk("memory - ");
i = (void *)dev->mem_start;
memset((void *)i,0xAA, DAYNA_MEMSIZE);
while(i<(volatile unsigned short *)dev->mem_end)
{
if(*i!=0xAAAA)
goto membad;
*i=0x5678; /* make sure we catch byte smearing */
if(*i!=0x5678)
goto membad;
i+=2; /* Skip a word */
}
printk("controller - ");
p=(void *)dev->base_addr;
plen=0;
while(plen<0x3FF00)
{
if(test_8390(p,0)==0)
break;
if(test_8390(p,1)==0)
break;
if(test_8390(p,2)==0)
break;
if(test_8390(p,3)==0)
break;
plen++;
p++;
}
if(plen==0x3FF00)
goto membad;
printk("OK\n");
dev->irq = SLOT2IRQ(ndev->board->slot);
if(ns8390_probe1(dev, 0, "dayna", id, -1, ndev)==0)
return 0;
}
/* Cabletron */
if (id==NS8390_CABLETRON) {
int memsize = 16<<10; /* fix this */
dev->base_addr=(int)(ndev->board->slot_addr+CABLETRON_8390_BASE);
dev->mem_start=(int)(ndev->board->slot_addr+CABLETRON_8390_MEM);
dev->mem_end=dev->mem_start+memsize;
dev->irq = SLOT2IRQ(ndev->board->slot);
/* The base address is unreadable if 0x00 has been written to the command register */
/* Reset the chip by writing E8390_NODMA+E8390_PAGE0+E8390_STOP just to be sure */
i = (void *)dev->base_addr;
*i = 0x21;
printk(KERN_INFO "%s: cabletron: testing board: ", dev->name);
printk("%dK memory - ", memsize>>10);
i=(void *)dev->mem_start;
while(i<(volatile unsigned short *)(dev->mem_start+memsize))
{
*i=0xAAAA;
if(*i!=0xAAAA)
goto membad;
*i=0x5555;
if(*i!=0x5555)
goto membad;
i+=2; /* Skip a word */
}
printk("OK\n");
if(ns8390_probe1(dev, 1, "cabletron", id, -1, ndev)==0)
return 0;
}
/* Apple, Farallon, Asante */
if(id==NS8390_APPLE || id==NS8390_FARALLON || id==NS8390_ASANTE)
{
int memsize;
dev->base_addr=(int)(ndev->board->slot_addr+APPLE_8390_BASE);
dev->mem_start=(int)(ndev->board->slot_addr+APPLE_8390_MEM);
memsize = apple_8390_mem_probe((void *)dev->mem_start);
dev->mem_end=dev->mem_start+memsize;
dev->irq = SLOT2IRQ(ndev->board->slot);
switch(id)
{
case NS8390_FARALLON:
printk(KERN_INFO "%s: farallon: testing board: ", dev->name);
break;
case NS8390_ASANTE:
printk(KERN_INFO "%s: asante: testing board: ", dev->name);
break;
case NS8390_APPLE:
default:
printk(KERN_INFO "%s: apple/clone: testing board: ", dev->name);
break;
}
printk("%dK memory - ", memsize>>10);
i=(void *)dev->mem_start;
memset((void *)i,0xAA, memsize);
while(i<(volatile unsigned short *)dev->mem_end)
{
if(*i!=0xAAAA)
goto membad;
*i=0x5555;
if(*i!=0x5555)
goto membad;
i+=2; /* Skip a word */
}
printk("OK\n");
switch (id)
{
case NS8390_FARALLON:
if(ns8390_probe1(dev, 1, "farallon", id, -1, ndev)==0)
return 0;
break;
case NS8390_ASANTE:
if(ns8390_probe1(dev, 1, "asante", id, -1, ndev)==0)
return 0;
break;
case NS8390_APPLE:
default:
if(ns8390_probe1(dev, 1, "apple/clone", id, -1, ndev)==0)
return 0;
break;
}
}
/* Interlan */
if(id==NS8390_INTERLAN)
{
/* As apple and asante */
dev->base_addr=(int)(ndev->board->slot_addr+APPLE_8390_BASE);
dev->mem_start=(int)(ndev->board->slot_addr+APPLE_8390_MEM);
dev->mem_end=dev->mem_start+APPLE_MEMSIZE; /* 8K it seems */
dev->irq = SLOT2IRQ(ndev->board->slot);
if(ns8390_probe1(dev, 1, "interlan", id, -1, ndev)==0)
return 0;
}
/* Kinetics (Shiva Etherport) */
if(id==NS8390_KINETICS)
{
dev->base_addr=(int)(ndev->board->slot_addr+KINETICS_8390_BASE);
dev->mem_start=(int)(ndev->board->slot_addr+KINETICS_8390_MEM);
dev->mem_end=dev->mem_start+KINETICS_MEMSIZE; /* 8K it seems */
dev->irq = SLOT2IRQ(ndev->board->slot);
if(ns8390_probe1(dev, 0, "kinetics", id, -1, ndev)==0)
return 0;
}
/* We should hopefully not get here */
printk(KERN_ERR "Probe unsuccessful.\n");
return -ENODEV;
membad:
printk(KERN_ERR "failed at %p in %p - %p.\n", i,
(void *)dev->mem_start, (void *)dev->mem_end);
return -ENODEV;
}
static int __init mac8390_ethernet_addr(struct nubus_dev* ndev, unsigned char addr[6])
{
struct nubus_dir dir;
struct nubus_dirent ent;
/* Get the functional resource for this device */
if (nubus_get_func_dir(ndev, &dir) == -1)
return -1;
if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1)
return -1;
nubus_get_rsrc_mem(addr, &ent, 6);
return 0;
}
static int __init ns8390_probe1(struct net_device *dev, int word16, char *model_name,
int type, int promoff, struct nubus_dev *ndev)
{
static u32 fwrd4_offsets[16]={
0, 4, 8, 12,
16, 20, 24, 28,
32, 36, 40, 44,
48, 52, 56, 60
};
static u32 back4_offsets[16]={
60, 56, 52, 48,
44, 40, 36, 32,
28, 24, 20, 16,
12, 8, 4, 0
};
static u32 fwrd2_offsets[16]={
0, 2, 4, 6,
8, 10, 12, 14,
16, 18, 20, 22,
24, 26, 28, 30
};
unsigned char *prom = (unsigned char*) ndev->board->slot_addr + promoff;
/* Allocate dev->priv and fill in 8390 specific dev fields. */
if (ethdev_init(dev))
{
printk ("%s: unable to get memory for dev->priv.\n", dev->name);
return -ENOMEM;
}
/* OK, we are certain this is going to work. Setup the device. */
ei_status.name = model_name;
ei_status.word16 = word16;
if (type==NS8390_CABLETRON) {
/* Cabletron card puts the RX buffer before the TX buffer */
ei_status.tx_start_page = CABLETRON_TX_START_PG;
ei_status.rx_start_page = CABLETRON_RX_START_PG;
ei_status.stop_page = CABLETRON_RX_STOP_PG;
ei_status.rmem_start = dev->mem_start;
ei_status.rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
} else {
ei_status.tx_start_page = WD_START_PG;
ei_status.rx_start_page = WD_START_PG + TX_PAGES;
ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
ei_status.rmem_start = dev->mem_start + TX_PAGES*256;
ei_status.rmem_end = dev->mem_end;
}
if(promoff==-1) /* Use nubus resources ? */
{
if(mac8390_ethernet_addr(ndev, dev->dev_addr))
{
printk("mac_ns8390: MAC address not in resources!\n");
return -ENODEV;
}
}
else /* Pull it off the card */
{
int i=0;
int x=1;
/* These should go in the end I hope */
if(type==NS8390_DAYNA)
x=2;
if(type==NS8390_INTERLAN || type==NS8390_KINETICS)
x=4;
while(i<6)
{
dev->dev_addr[i]=*prom;
prom+=x;
if(i)
printk(":");
printk("%02X",dev->dev_addr[i++]);
}
}
printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
dev->name, ndev->board->name, ndev->board->slot, model_name);
printk(KERN_INFO "MAC ");
{
int i;
for (i = 0; i < 6; i++) {
printk("%2.2x", dev->dev_addr[i]);
if (i < 5)
printk(":");
}
}
printk(" IRQ %d, shared memory at %#lx-%#lx.\n",
dev->irq, dev->mem_start, dev->mem_end-1);
switch(type)
{
case NS8390_DAYNA: /* Dayna card */
case NS8390_KINETICS: /* Kinetics -- 8 bit config, but 16 bit mem */
/* 16 bit, 4 word offsets */
ei_status.reset_8390 = &ns8390_no_reset;
ei_status.block_input = &dayna_block_input;
ei_status.block_output = &dayna_block_output;
ei_status.get_8390_hdr = &dayna_get_8390_hdr;
ei_status.reg_offset = fwrd4_offsets;
break;
case NS8390_CABLETRON: /* Cabletron */
/* 16 bit card, register map is short forward */
ei_status.reset_8390 = &ns8390_no_reset;
/* Ctron card won't accept 32bit values read or written to it */
ei_status.block_input = &slow_sane_block_input;
ei_status.block_output = &slow_sane_block_output;
ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
ei_status.reg_offset = fwrd2_offsets;
break;
case NS8390_FARALLON:
case NS8390_APPLE: /* Apple/Asante/Farallon */
/* 16 bit card, register map is reversed */
ei_status.reset_8390 = &ns8390_no_reset;
ei_status.block_input = &slow_sane_block_input;
ei_status.block_output = &slow_sane_block_output;
ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
ei_status.reg_offset = back4_offsets;
break;
case NS8390_ASANTE:
/* 16 bit card, register map is reversed */
ei_status.reset_8390 = &ns8390_no_reset;
ei_status.block_input = &sane_block_input;
ei_status.block_output = &sane_block_output;
ei_status.get_8390_hdr = &sane_get_8390_hdr;
ei_status.reg_offset = back4_offsets;
break;
case NS8390_INTERLAN: /* Interlan */
/* 16 bit card, map is forward */
ei_status.reset_8390 = &interlan_reset;
ei_status.block_input = &sane_block_input;
ei_status.block_output = &sane_block_output;
ei_status.get_8390_hdr = &sane_get_8390_hdr;
ei_status.reg_offset = back4_offsets;
break;
#if 0 /* i think this suffered code rot. my kinetics card has much
* different settings. -- CSA [22-May-1999] */
case NS8390_KINETICS: /* Kinetics */
/* 8bit card, map is forward */
ei_status.reset_8390 = &ns8390_no_reset;
ei_status.block_input = &sane_block_input;
ei_status.block_output = &sane_block_output;
ei_status.get_8390_hdr = &sane_get_8390_hdr;
ei_status.reg_offset = back4_offsets;
break;
#endif
default:
panic("Detected a card I can't drive - whoops\n");
}
dev->open = &ns8390_open;
dev->stop = &ns8390_close_card;
NS8390_init(dev, 0);
return 0;
}
static int ns8390_open(struct net_device *dev)
{
int ret;
ei_open(dev);
/* At least on my card (a Focus Enhancements PDS card) I start */
/* getting interrupts right away, so the driver needs to be */
/* completely initialized before enabling the interrupt. */
/* - funaho@jurai.org (1999-05-17) */
/* Non-slow interrupt, works around issues with the SONIC driver */
ret = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev);
if (ret) {
printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
return ret;
}
return 0;
}
static void ns8390_no_reset(struct net_device *dev)
{
if (ei_debug > 1)
printk("Need to reset the NS8390 t=%lu...", jiffies);
ei_status.txing = 0;
if (ei_debug > 1) printk("reset not supported\n");
}
static int ns8390_close_card(struct net_device *dev)
{
if (ei_debug > 1)
printk("%s: Shutting down ethercard.\n", dev->name);
free_irq(dev->irq, dev);
ei_close(dev);
return 0;
}
/*
* Interlan Specific Code Starts Here
*/
static void interlan_reset(struct net_device *dev)
{
unsigned char *target=nubus_slot_addr(IRQ2SLOT(dev->irq));
if (ei_debug > 1)
printk("Need to reset the NS8390 t=%lu...", jiffies);
ei_status.txing = 0;
/* This write resets the card */
target[0xC0000]=0;
if (ei_debug > 1) printk("reset complete\n");
return;
}
/*
* Daynaport code (some is used by other drivers)
*/
/* Grab the 8390 specific header. Similar to the block_input routine, but
we don't need to be concerned with ring wrap as the header will be at
the start of a page, so we optimize accordingly. */
/* Block input and output are easy on shared memory ethercards, and trivial
on the Daynaport card where there is no choice of how to do it.
The only complications are that the ring buffer wraps.
*/
static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
{
volatile unsigned short *ptr;
unsigned short *target=to;
from<<=1; /* word, skip overhead */
ptr=(unsigned short *)(dev->mem_start+from);
/*
* Leading byte?
*/
if (from&2) {
*((char *)target)++ = *(((char *)ptr++)-1);
count--;
}
while(count>=2)
{
*target++=*ptr++; /* Copy and */
ptr++; /* skip cruft */
count-=2;
}
/*
* Trailing byte ?
*/
if(count)
{
/* Big endian */
unsigned short v=*ptr;
*((char *)target)=v>>8;
}
}
static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
{
volatile unsigned short *ptr;
const unsigned short *src=from;
to<<=1; /* word, skip overhead */
ptr=(unsigned short *)(dev->mem_start+to);
/*
* Leading byte?
*/
if (to&2) { /* avoid a byte write (stomps on other data) */
ptr[-1] = (ptr[-1]&0xFF00)|*((unsigned char *)src)++;
ptr++;
count--;
}
while(count>=2)
{
*ptr++=*src++; /* Copy and */
ptr++; /* skip cruft */
count-=2;
}
/*
* Trailing byte ?
*/
if(count)
{
/* Big endian */
unsigned short v=*src;
/* card doesn't like byte writes */
*ptr=(*ptr&0x00FF)|(v&0xFF00);
}
}
static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
/* Register endianism - fix here rather than 8390.c */
hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
}
static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
unsigned long xfer_start = xfer_base+dev->mem_start;
/*
* Note the offset maths is done in card memory space which
* is word per long onto our space.
*/
if (xfer_start + count > ei_status.rmem_end)
{
/* We must wrap the input move. */
int semi_count = ei_status.rmem_end - xfer_start;
dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
count -= semi_count;
dayna_memcpy_fromcard(dev, skb->data + semi_count,
ei_status.rmem_start - dev->mem_start, count);
}
else
{
dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
}
}
static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
int start_page)
{
long shmem = (start_page - WD_START_PG)<<8;
dayna_memcpy_tocard(dev, shmem, buf, count);
}
/*
* Cards with full width memory
*/
static void sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
memcpy((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
/* Register endianism - fix here rather than 8390.c */
hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
}
static void sane_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
unsigned long xfer_start = xfer_base+dev->mem_start;
if (xfer_start + count > ei_status.rmem_end)
{
/* We must wrap the input move. */
int semi_count = ei_status.rmem_end - xfer_start;
memcpy(skb->data, (char *)dev->mem_start+xfer_base, semi_count);
count -= semi_count;
memcpy(skb->data + semi_count,
(char *)ei_status.rmem_start, count);
}
else
{
memcpy(skb->data, (char *)dev->mem_start+xfer_base, count);
}
}
static void sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
int start_page)
{
long shmem = (start_page - WD_START_PG)<<8;
memcpy((char *)dev->mem_start+shmem, buf, count);
}
static void word_memcpy_tocard(void *tp, const void *fp, int count)
{
volatile unsigned short *to = tp;
const unsigned short *from = fp;
count++;
count/=2;
while(count--)
*to++=*from++;
}
static void word_memcpy_fromcard(void *tp, const void *fp, int count)
{
unsigned short *to = tp;
const volatile unsigned short *from = fp;
count++;
count/=2;
while(count--)
*to++=*from++;
}
static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
/* Register endianism - fix here rather than 8390.c */
hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
}
static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
unsigned long xfer_start = xfer_base+dev->mem_start;
if (xfer_start + count > ei_status.rmem_end)
{
/* We must wrap the input move. */
int semi_count = ei_status.rmem_end - xfer_start;
word_memcpy_fromcard(skb->data, (char *)dev->mem_start+xfer_base, semi_count);
count -= semi_count;
word_memcpy_fromcard(skb->data + semi_count,
(char *)ei_status.rmem_start, count);
}
else
{
word_memcpy_fromcard(skb->data, (char *)dev->mem_start+xfer_base, count);
}
}
static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
int start_page)
{
long shmem = (start_page - WD_START_PG)<<8;
word_memcpy_tocard((char *)dev->mem_start+shmem, buf, count);
#if 0
long shmem = (start_page - WD_START_PG)<<8;
volatile unsigned short *to=(unsigned short *)(dev->mem_start+shmem);
volatile int p;
unsigned short *bp=(unsigned short *)buf;
count=(count+1)/2;
while(count--)
{
*to++=*bp++;
for(p=0;p<10;p++)
p++;
}
#endif
}
MODULE_LICENSE("GPL");
drivers/net/mac8390.c 0 → 100644
View file @ c2ed08fa
/* mac8390.c: New driver for 8390-based Nubus (or Nubus-alike)
Ethernet cards on Linux */
/* Based on the former daynaport.c driver, by Alan Cox. Some code
taken from or inspired by skeleton.c by Donald Becker, acenic.c by
Jes Sorensen, and ne2k-pci.c by Donald Becker and Paul Gortmaker.
This software may be used and distributed according to the terms of
the GNU Public License, incorporated herein by reference. */
/* 2000-02-28: support added for Dayna and Kinetics cards by
A.G.deWijn@phys.uu.nl */
/* 2000-04-04: support added for Dayna2 by bart@etpmod.phys.tue.nl */
/* 2001-04-18: support for DaynaPort E/LC-M by rayk@knightsmanor.org */
/* 2001-05-15: support for Cabletron ported from old daynaport driver
* and fixed access to Sonic Sys card which masquerades as a Farallon
* by rayk@knightsmanor.org */
#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <linux/ptrace.h>
#include <linux/ioport.h>
#include <linux/nubus.h>
#include <linux/in.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <asm/system.h>
#include <asm/bitops.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/hwtest.h>
#include <asm/macints.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include "8390.h"
#if (LINUX_VERSION_CODE < 0x02030e)
#define net_device device
#endif
#define WD_START_PG 0x00 /* First page of TX buffer */
#define CABLETRON_RX_START_PG 0x00 /* First page of RX buffer */
#define CABLETRON_RX_STOP_PG 0x30 /* Last page +1 of RX ring */
#define CABLETRON_TX_START_PG CABLETRON_RX_STOP_PG /* First page of TX buffer */
/* Unfortunately it seems we have to hardcode these for the moment */
/* Shouldn't the card know about this? Does anyone know where to read it off the card? Do we trust the data provided by the card? */
#define DAYNA_8390_BASE 0x80000
#define DAYNA_8390_MEM 0x00000
#define KINETICS_8390_BASE 0x80000
#define KINETICS_8390_MEM 0x00000
#define CABLETRON_8390_BASE 0x90000
#define CABLETRON_8390_MEM 0x00000
enum mac8390_type {
MAC8390_NONE = -1,
MAC8390_APPLE,
MAC8390_ASANTE,
MAC8390_FARALLON, /* Apple, Asante, and Farallon are all compatible */
MAC8390_CABLETRON,
MAC8390_DAYNA,
MAC8390_INTERLAN,
MAC8390_KINETICS,
MAC8390_FOCUS,
MAC8390_SONICSYS,
MAC8390_DAYNA2,
MAC8390_DAYNA3,
};
static const char * cardname[] = {
"apple",
"asante",
"farallon",
"cabletron",
"dayna",
"interlan",
"kinetics",
"focus",
"sonic systems",
"dayna2",
"dayna_lc",
};
static int word16[] = {
1, /* apple */
1, /* asante */
1, /* farallon */
1, /* cabletron */
0, /* dayna */
1, /* interlan */
0, /* kinetics */
1, /* focus (??) */
1, /* sonic systems */
1, /* dayna2 */
1, /* dayna-lc */
};
/* on which cards do we use NuBus resources? */
static int useresources[] = {
1, /* apple */
1, /* asante */
1, /* farallon */
0, /* cabletron */
0, /* dayna */
0, /* interlan */
0, /* kinetics */
0, /* focus (??) */
1, /* sonic systems */
1, /* dayna2 */
1, /* dayna-lc */
};
static const char __initdata * version =
"mac8390.c: v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
extern int mac8390_probe(struct net_device * dev);
extern enum mac8390_type mac8390_ident(struct nubus_dev * dev);
extern int mac8390_memsize(unsigned long membase);
extern int mac8390_memtest(struct net_device * dev);
extern int mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
enum mac8390_type type);
static int mac8390_open(struct net_device * dev);
static int mac8390_close(struct net_device * dev);
static void mac8390_no_reset(struct net_device *dev);
/* Sane (32-bit chunk memory read/write) - Apple/Asante/Farallon do this*/
static void sane_get_8390_hdr(struct net_device *dev,
struct e8390_pkt_hdr *hdr, int ring_page);
static void sane_block_input(struct net_device * dev, int count,
struct sk_buff * skb, int ring_offset);
static void sane_block_output(struct net_device * dev, int count,
const unsigned char * buf, const int start_page);
/* dayna_memcpy to and from card */
static void dayna_memcpy_fromcard(struct net_device *dev, void *to,
int from, int count);
static void dayna_memcpy_tocard(struct net_device *dev, int to,
const void *from, int count);
/* Dayna - Dayna/Kinetics use this */
static void dayna_get_8390_hdr(struct net_device *dev,
struct e8390_pkt_hdr *hdr, int ring_page);
static void dayna_block_input(struct net_device *dev, int count,
struct sk_buff *skb, int ring_offset);
static void dayna_block_output(struct net_device *dev, int count,
const unsigned char *buf, int start_page);
#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
/* Slow Sane (16-bit chunk memory read/write) Cabletron uses this */
static void slow_sane_get_8390_hdr(struct net_device *dev,
struct e8390_pkt_hdr *hdr, int ring_page);
static void slow_sane_block_input(struct net_device *dev, int count,
struct sk_buff *skb, int ring_offset);
static void slow_sane_block_output(struct net_device *dev, int count,
const unsigned char *buf, int start_page);
static void word_memcpy_tocard(void *tp, const void *fp, int count);
static void word_memcpy_fromcard(void *tp, const void *fp, int count);
enum mac8390_type __init mac8390_ident(struct nubus_dev * dev)
{
if (dev->dr_sw == NUBUS_DRSW_ASANTE)
return MAC8390_ASANTE;
if (dev->dr_sw == NUBUS_DRSW_FARALLON)
return MAC8390_FARALLON;
if (dev->dr_sw == NUBUS_DRSW_KINETICS)
return MAC8390_KINETICS;
if (dev->dr_sw == NUBUS_DRSW_DAYNA)
return MAC8390_DAYNA;
if (dev->dr_sw == NUBUS_DRSW_DAYNA2)
return MAC8390_DAYNA2;
if (dev->dr_sw == NUBUS_DRSW_DAYNA_LC)
return MAC8390_DAYNA3;
if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
return MAC8390_CABLETRON;
return MAC8390_NONE;
}
int __init mac8390_memsize(unsigned long membase)
{
unsigned long flags;
int i, j;
save_flags(flags); cli();
/* Check up to 32K in 4K increments */
for (i = 0; i < 8; i++) {
volatile unsigned short *m = (unsigned short *) (membase + (i * 0x1000));
/* Unwriteable - we have a fully decoded card and the
RAM end located */
if (hwreg_present(m) == 0)
break;
/* write a distinctive byte */
*m = 0xA5A0 | i;
/* check that we read back what we wrote */
if (*m != (0xA5A0 | i))
break;
/* check for partial decode and wrap */
for (j = 0; j < i; j++) {
volatile unsigned short *p = (unsigned short *) (membase + (j * 0x1000));
if (*p != (0xA5A0 | j))
break;
}
}
restore_flags(flags);
/* in any case, we stopped once we tried one block too many,
or once we reached 32K */
return i * 0x1000;
}
static int probed __initdata = 0;
int __init mac8390_probe(struct net_device * dev)
{
volatile unsigned short *i;
int boards_found = 0;
int version_disp = 0;
struct nubus_dev * ndev = NULL;
struct nubus_dir dir;
struct nubus_dirent ent;
int offset;
enum mac8390_type cardtype;
if (probed)
return -ENODEV;
probed++;
/* probably should check for Nubus instead */
if (!MACH_IS_MAC)
return -ENODEV;
while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET, ndev))) {
dev = NULL;
if ((cardtype = mac8390_ident(ndev)) == MAC8390_NONE)
continue;
dev = init_etherdev(dev, 0);
if (dev == NULL) {
printk(KERN_ERR "Unable to allocate etherdev"
"structure!\n");
return -ENOMEM;
}
if (version_disp == 0) {
version_disp = 1;
printk(version);
}
dev->irq = SLOT2IRQ(ndev->board->slot);
/* This is getting to be a habit */
dev->base_addr = ndev->board->slot_addr | ((ndev->board->slot&0xf) << 20);
/* Get some Nubus info - we will trust the card's idea
of where its memory and registers are. */
if (nubus_get_func_dir(ndev, &dir) == -1) {
printk(KERN_ERR "%s: Unable to get Nubus functional"
" directory for slot %X!\n",
dev->name, ndev->board->slot);
continue;
}
/* Get the MAC address */
if ((nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent)) == -1) {
printk(KERN_INFO "%s: Couldn't get MAC address!\n",
dev->name);
continue;
} else {
nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
/* Some Sonic Sys cards masquerade as Farallon */
if (cardtype == MAC8390_FARALLON &&
dev->dev_addr[0] == 0x0 &&
dev->dev_addr[1] == 0x40 &&
dev->dev_addr[2] == 0x10) {
/* This is really Sonic Sys card */
cardtype = MAC8390_SONICSYS;
}
}
if (useresources[cardtype] == 1) {
nubus_rewinddir(&dir);
if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS, &ent) == -1) {
printk(KERN_ERR "%s: Memory offset resource"
" for slot %X not found!\n",
dev->name, ndev->board->slot);
continue;
}
nubus_get_rsrc_mem(&offset, &ent, 4);
dev->mem_start = dev->base_addr + offset;
/* yes, this is how the Apple driver does it */
dev->base_addr = dev->mem_start + 0x10000;
nubus_rewinddir(&dir);
if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_LENGTH, &ent) == -1) {
printk(KERN_INFO "%s: Memory length resource"
" for slot %X not found"
", probing\n",
dev->name, ndev->board->slot);
offset = mac8390_memsize(dev->mem_start);
} else {
nubus_get_rsrc_mem(&offset, &ent, 4);
}
dev->mem_end = dev->mem_start + offset;
} else {
switch (cardtype) {
case MAC8390_KINETICS:
case MAC8390_DAYNA: /* it's the same */
dev->base_addr =
(int)(ndev->board->slot_addr +
DAYNA_8390_BASE);
dev->mem_start =
(int)(ndev->board->slot_addr +
DAYNA_8390_MEM);
dev->mem_end =
dev->mem_start +
mac8390_memsize(dev->mem_start);
break;
case MAC8390_CABLETRON:
dev->base_addr =
(int)(ndev->board->slot_addr +
CABLETRON_8390_BASE);
dev->mem_start =
(int)(ndev->board->slot_addr +
CABLETRON_8390_MEM);
/* The base address is unreadable if 0x00
* has been written to the command register
* Reset the chip by writing E8390_NODMA +
* E8390_PAGE0 + E8390_STOP just to be
* sure
*/
i = (void *)dev->base_addr;
*i = 0x21;
dev->mem_end =
dev->mem_start +
mac8390_memsize(dev->mem_start);
break;
default:
printk(KERN_ERR "Card type %s is"
" unsupported, sorry\n",
cardname[cardtype]);
return -ENODEV;
}
}
/* Do the nasty 8390 stuff */
if (mac8390_initdev(dev, ndev, cardtype))
continue;
boards_found++;
}
/* We're outta here */
if (boards_found > 0)
return 0;
else
return -ENODEV;
}
#ifdef MODULE
#if LINUX_VERSION_CODE > 0x20118
MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
MODUEL_LICENSE("GPL");
#endif
int init_module(void)
{
if (mac8390_probe(NULL)) {
printk(KERN_NOTICE "mac8390.c: No useable cards found, driver NOT installed.\n");
return -ENODEV;
}
lock_8390_module();
return 0;
}
void cleanup_module(void)
{
/* FIXME: should probably keep track of net_device structs
somewhere and unregister them here? */
unlock_8390_module();
}
#endif /* MODULE */
int __init mac8390_initdev(struct net_device * dev, struct nubus_dev * ndev,
enum mac8390_type type)
{
static u32 fwrd4_offsets[16]={
0, 4, 8, 12,
16, 20, 24, 28,
32, 36, 40, 44,
48, 52, 56, 60
};
static u32 back4_offsets[16]={
60, 56, 52, 48,
44, 40, 36, 32,
28, 24, 20, 16,
12, 8, 4, 0
};
static u32 fwrd2_offsets[16]={
0, 2, 4, 6,
8, 10, 12, 14,
16, 18, 20, 22,
24, 26, 28, 30
};
int access_bitmode;
/* 8390 specific init for dev - allocates dev->priv */
if (ethdev_init(dev)) {
printk(KERN_ERR "%s: Unable to allocate memory for dev->priv!\n", dev->name);
return -ENOMEM;
}
/* Now fill in our stuff */
dev->open = &mac8390_open;
dev->stop = &mac8390_close;
/* GAR, ei_status is actually a macro even though it looks global */
ei_status.name = cardname[type];
ei_status.word16 = word16[type];
/* Cabletron's TX/RX buffers are backwards */
if (type == MAC8390_CABLETRON) {
ei_status.tx_start_page = CABLETRON_TX_START_PG;
ei_status.rx_start_page = CABLETRON_RX_START_PG;
ei_status.stop_page = CABLETRON_RX_STOP_PG;
dev->rmem_start = dev->mem_start;
dev->rmem_end = dev->mem_start + CABLETRON_RX_STOP_PG*256;
} else {
ei_status.tx_start_page = WD_START_PG;
ei_status.rx_start_page = WD_START_PG + TX_PAGES;
ei_status.stop_page = (dev->mem_end - dev->mem_start)/256;
dev->rmem_start = dev->mem_start + TX_PAGES*256;
dev->rmem_end = dev->mem_end;
}
/* Fill in model-specific information and functions */
switch(type) {
case MAC8390_SONICSYS:
/* 16 bit card, register map is reversed */
ei_status.reset_8390 = &mac8390_no_reset;
ei_status.block_input = &slow_sane_block_input;
ei_status.block_output = &slow_sane_block_output;
ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
ei_status.reg_offset = back4_offsets;
access_bitmode = 0;
break;
case MAC8390_FARALLON:
case MAC8390_APPLE:
case MAC8390_ASANTE:
case MAC8390_DAYNA2:
case MAC8390_DAYNA3:
/* 32 bit card, register map is reversed */
/* sane */
ei_status.reset_8390 = &mac8390_no_reset;
ei_status.block_input = &sane_block_input;
ei_status.block_output = &sane_block_output;
ei_status.get_8390_hdr = &sane_get_8390_hdr;
ei_status.reg_offset = back4_offsets;
access_bitmode = 1;
break;
case MAC8390_CABLETRON:
/* 16 bit card, register map is short forward */
ei_status.reset_8390 = &mac8390_no_reset;
ei_status.block_input = &slow_sane_block_input;
ei_status.block_output = &slow_sane_block_output;
ei_status.get_8390_hdr = &slow_sane_get_8390_hdr;
ei_status.reg_offset = fwrd2_offsets;
access_bitmode = 0;
break;
case MAC8390_DAYNA:
case MAC8390_KINETICS:
/* 16 bit memory */
/* dayna and similar */
ei_status.reset_8390 = &mac8390_no_reset;
ei_status.block_input = &dayna_block_input;
ei_status.block_output = &dayna_block_output;
ei_status.get_8390_hdr = &dayna_get_8390_hdr;
ei_status.reg_offset = fwrd4_offsets;
access_bitmode = 0;
break;
default:
printk(KERN_ERR "Card type %s is unsupported, sorry\n", cardname[type]);
return -ENODEV;
}
NS8390_init(dev, 0);
/* Good, done, now spit out some messages */
printk(KERN_INFO "%s: %s in slot %X (type %s)\n",
dev->name, ndev->board->name, ndev->board->slot, cardname[type]);
printk(KERN_INFO "MAC ");
{
int i;
for (i = 0; i < 6; i++) {
printk("%2.2x", dev->dev_addr[i]);
if (i < 5)
printk(":");
}
}
printk(" IRQ %d, shared memory at %#lx-%#lx, %d-bit access.\n",
dev->irq, dev->mem_start, dev->mem_end-1,
access_bitmode?32:16);
return 0;
}
static int mac8390_open(struct net_device *dev)
{
ei_open(dev);
if (request_irq(dev->irq, ei_interrupt, 0, "8390 Ethernet", dev)) {
printk ("%s: unable to get IRQ %d.\n", dev->name, dev->irq);
return -EAGAIN;
}
MOD_INC_USE_COUNT;
return 0;
}
static int mac8390_close(struct net_device *dev)
{
free_irq(dev->irq, dev);
ei_close(dev);
MOD_DEC_USE_COUNT;
return 0;
}
static void mac8390_no_reset(struct net_device *dev)
{
ei_status.txing = 0;
if (ei_debug > 1)
printk("reset not supported\n");
return;
}
/* dayna_memcpy_fromio/dayna_memcpy_toio */
/* directly from daynaport.c by Alan Cox */
static void dayna_memcpy_fromcard(struct net_device *dev, void *to, int from, int count)
{
volatile unsigned short *ptr;
unsigned short *target=to;
from<<=1; /* word, skip overhead */
ptr=(unsigned short *)(dev->mem_start+from);
/* Leading byte? */
if (from&2) {
*((char *)target)++ = *(((char *)ptr++)-1);
count--;
}
while(count>=2)
{
*target++=*ptr++; /* Copy and */
ptr++; /* skip cruft */
count-=2;
}
/* Trailing byte? */
if(count)
{
/* Big endian */
unsigned short v=*ptr;
*((char *)target)=v>>8;
}
}
static void dayna_memcpy_tocard(struct net_device *dev, int to, const void *from, int count)
{
volatile unsigned short *ptr;
const unsigned short *src=from;
to<<=1; /* word, skip overhead */
ptr=(unsigned short *)(dev->mem_start+to);
/* Leading byte? */
if (to&2) { /* avoid a byte write (stomps on other data) */
ptr[-1] = (ptr[-1]&0xFF00)|*((unsigned char *)src)++;
ptr++;
count--;
}
while(count>=2)
{
*ptr++=*src++; /* Copy and */
ptr++; /* skip cruft */
count-=2;
}
/* Trailing byte? */
if(count)
{
/* Big endian */
unsigned short v=*src;
/* card doesn't like byte writes */
*ptr=(*ptr&0x00FF)|(v&0xFF00);
}
}
/* sane block input/output */
static void sane_get_8390_hdr(struct net_device *dev,
struct e8390_pkt_hdr *hdr, int ring_page)
{
unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
memcpy_fromio((void *)hdr, (char *)dev->mem_start + hdr_start, 4);
/* Fix endianness */
hdr->count = swab16(hdr->count);
}
static void sane_block_input(struct net_device *dev, int count,
struct sk_buff *skb, int ring_offset)
{
unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
unsigned long xfer_start = xfer_base + dev->mem_start;
if (xfer_start + count > dev->rmem_end) {
/* We must wrap the input move. */
int semi_count = dev->rmem_end - xfer_start;
memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, semi_count);
count -= semi_count;
memcpy_toio(skb->data + semi_count, (char *)dev->rmem_start, count);
} else {
memcpy_fromio(skb->data, (char *)dev->mem_start + xfer_base, count);
}
}
static void sane_block_output(struct net_device *dev, int count,
const unsigned char *buf, int start_page)
{
long shmem = (start_page - WD_START_PG)<<8;
memcpy_toio((char *)dev->mem_start + shmem, buf, count);
}
/* dayna block input/output */
static void dayna_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
dayna_memcpy_fromcard(dev, (void *)hdr, hdr_start, 4);
/* Fix endianness */
hdr->count=(hdr->count&0xFF)<<8|(hdr->count>>8);
}
static void dayna_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
unsigned long xfer_start = xfer_base+dev->mem_start;
/* Note the offset math is done in card memory space which is word
per long onto our space. */
if (xfer_start + count > dev->rmem_end)
{
/* We must wrap the input move. */
int semi_count = dev->rmem_end - xfer_start;
dayna_memcpy_fromcard(dev, skb->data, xfer_base, semi_count);
count -= semi_count;
dayna_memcpy_fromcard(dev, skb->data + semi_count,
dev->rmem_start - dev->mem_start, count);
}
else
{
dayna_memcpy_fromcard(dev, skb->data, xfer_base, count);
}
}
static void dayna_block_output(struct net_device *dev, int count, const unsigned char *buf,
int start_page)
{
long shmem = (start_page - WD_START_PG)<<8;
dayna_memcpy_tocard(dev, shmem, buf, count);
}
/* Cabletron block I/O */
static void slow_sane_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
int ring_page)
{
unsigned long hdr_start = (ring_page - WD_START_PG)<<8;
word_memcpy_fromcard((void *)hdr, (char *)dev->mem_start+hdr_start, 4);
/* Register endianism - fix here rather than 8390.c */
hdr->count = (hdr->count&0xFF)<<8|(hdr->count>>8);
}
static void slow_sane_block_input(struct net_device *dev, int count, struct sk_buff *skb,
int ring_offset)
{
unsigned long xfer_base = ring_offset - (WD_START_PG<<8);
unsigned long xfer_start = xfer_base+dev->mem_start;
if (xfer_start + count > dev->rmem_end)
{
/* We must wrap the input move. */
int semi_count = dev->rmem_end - xfer_start;
word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
xfer_base, semi_count);
count -= semi_count;
word_memcpy_fromcard(skb->data + semi_count,
(char *)dev->rmem_start, count);
}
else
{
word_memcpy_fromcard(skb->data, (char *)dev->mem_start +
xfer_base, count);
}
}
static void slow_sane_block_output(struct net_device *dev, int count, const unsigned char *buf,
int start_page)
{
long shmem = (start_page - WD_START_PG)<<8;
word_memcpy_tocard((char *)dev->mem_start + shmem, buf, count);
}
static void word_memcpy_tocard(void *tp, const void *fp, int count)
{
volatile unsigned short *to = tp;
const unsigned short *from = fp;
count++;
count/=2;
while(count--)
*to++=*from++;
}
static void word_memcpy_fromcard(void *tp, const void *fp, int count)
{
unsigned short *to = tp;
const volatile unsigned short *from = fp;
count++;
count/=2;
while(count--)
*to++=*from++;
}
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