- 根目录:
- drivers
- net
- mac8390.c
/* 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 */
/* 2002-12-30: Try to support more cards, some clues from NetBSD driver */
/* 2003-12-26: Make sure Asante cards always work. */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <linux/ptrace.h>
#include <linux/ioport.h>
#include <linux/nubus.h>
#include <linux/in.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/bitops.h>
#include <linux/io.h>
#include <asm/system.h>
#include <asm/dma.h>
#include <asm/hwtest.h>
#include <asm/macints.h>
static char version[] =
"v0.4 2001-05-15 David Huggins-Daines <dhd@debian.org> and others\n";
#define EI_SHIFT(x) (ei_local->reg_offset[x])
#define ei_inb(port) in_8(port)
#define ei_outb(val, port) out_8(port, val)
#define ei_inb_p(port) in_8(port)
#define ei_outb_p(val, port) out_8(port, val)
#include "lib8390.c"
#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 CABLETRON_8390_BASE 0x90000
#define CABLETRON_8390_MEM 0x00000
#define INTERLAN_8390_BASE 0xE0000
#define INTERLAN_8390_MEM 0xD0000
enum mac8390_type {
MAC8390_NONE = -1,
MAC8390_APPLE,
MAC8390_ASANTE,
MAC8390_FARALLON,
MAC8390_CABLETRON,
MAC8390_DAYNA,
MAC8390_INTERLAN,
MAC8390_KINETICS,
};
static const char *cardname[] = {
"apple",
"asante",
"farallon",
"cabletron",
"dayna",
"interlan",
"kinetics",
};
static const int word16[] = {
1, /* apple */
1, /* asante */
1, /* farallon */
1, /* cabletron */
0, /* dayna */
1, /* interlan */
0, /* kinetics */
};
/* on which cards do we use NuBus resources? */
static const int useresources[] = {
1, /* apple */
1, /* asante */
1, /* farallon */
0, /* cabletron */
0, /* dayna */
0, /* interlan */
0, /* kinetics */
};
enum mac8390_access {
ACCESS_UNKNOWN = 0,
ACCESS_32,
ACCESS_16,
};
extern int mac8390_memtest(struct net_device *dev);
static 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);
static void interlan_reset(struct net_device *dev);
/* Sane (32-bit chunk memory read/write) - Some Farallon and Apple 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))
#define memcmp_withio(a, b, c) memcmp((a), (void *)(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(unsigned long tp, const void *fp, int count);
static void word_memcpy_fromcard(void *tp, unsigned long fp, int count);
static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
{
switch (dev->dr_sw) {
case NUBUS_DRSW_3COM:
switch (dev->dr_hw) {
case NUBUS_DRHW_APPLE_SONIC_NB:
case NUBUS_DRHW_APPLE_SONIC_LC:
case NUBUS_DRHW_SONNET:
return MAC8390_NONE;
break;
default:
return MAC8390_APPLE;
break;
}
break;
case NUBUS_DRSW_APPLE:
switch (dev->dr_hw) {
case NUBUS_DRHW_ASANTE_LC:
return MAC8390_NONE;
break;
case NUBUS_DRHW_CABLETRON:
return MAC8390_CABLETRON;
break;
default:
return MAC8390_APPLE;
break;
}
break;
case NUBUS_DRSW_ASANTE:
return MAC8390_ASANTE;
break;
case NUBUS_DRSW_TECHWORKS:
case NUBUS_DRSW_DAYNA2:
case NUBUS_DRSW_DAYNA_LC:
if (dev->dr_hw == NUBUS_DRHW_CABLETRON)
return MAC8390_CABLETRON;
else
return MAC8390_APPLE;
break;
case NUBUS_DRSW_FARALLON:
return MAC8390_FARALLON;
break;
case NUBUS_DRSW_KINETICS:
switch (dev->dr_hw) {
case NUBUS_DRHW_INTERLAN:
return MAC8390_INTERLAN;
break;
default:
return MAC8390_KINETICS;
break;
}
break;
case NUBUS_DRSW_DAYNA:
/*
* These correspond to Dayna Sonic cards
* which use the macsonic driver
*/
if (dev->dr_hw == NUBUS_DRHW_SMC9194 ||
dev->dr_hw == NUBUS_DRHW_INTERLAN)
return MAC8390_NONE;
else
return MAC8390_DAYNA;
break;
}
return MAC8390_NONE;
}
static enum mac8390_access __init mac8390_testio(volatile unsigned long membase)
{
unsigned long outdata = 0xA5A0B5B0;
unsigned long indata = 0x00000000;
/* Try writing 32 bits */
memcpy_toio(membase, &outdata, 4);
/* Now compare them */
if (memcmp_withio(&outdata, membase, 4) == 0)
return ACCESS_32;
/* Write 16 bit output */
word_memcpy_tocard(membase, &outdata, 4);
/* Now read it back */
word_memcpy_fromcard(&indata, membase, 4);
if (outdata == indata)
return ACCESS_16;
return ACCESS_UNKNOWN;
}
static int __init mac8390_memsize(unsigned long membase)
{
unsigned long flags;
int i, j;
local_irq_save(flags);
/* 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;
}
}
local_irq_restore(flags);
/*
* in any case, we stopped once we tried one block too many,
* or once we reached 32K
*/
return i * 0x1000;
}
static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev,
enum mac8390_type cardtype)
{
struct nubus_dir dir;
struct nubus_dirent ent;
int offset;
volatile unsigned short *i;
printk_once(KERN_INFO pr_fmt("%s"), 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) {
pr_err("%s: Unable to get Nubus functional directory for slot %X!\n",
dev->name, ndev->board->slot);
return false;
}
/* Get the MAC address */
if (nubus_find_rsrc(&dir, NUBUS_RESID_MAC_ADDRESS, &ent) == -1) {
pr_info("%s: Couldn't get MAC address!\n", dev->name);
return false;
}
nubus_get_rsrc_mem(dev->dev_addr, &ent, 6);
if (useresources[cardtype] == 1) {
nubus_rewinddir(&dir);
if (nubus_find_rsrc(&dir, NUBUS_RESID_MINOR_BASEOS,
&ent) == -1) {
pr_err("%s: Memory offset resource for slot %X not found!\n",
dev->name, ndev->board->slot);
return false;
}
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) {
pr_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_INTERLAN:
dev->base_addr = (int)(ndev->board->slot_addr +
INTERLAN_8390_BASE);
dev->mem_start = (int)(ndev->board->slot_addr +
INTERLAN_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:
pr_err("Card type %s is unsupported, sorry\n",
ndev->board->name);
return false;
}
}
return true;
}
struct net_device * __init mac8390_probe(int unit)
{
struct net_device *dev;
struct nubus_dev *ndev = NULL;
int err = -ENODEV;
static unsigned int slots;
enum mac8390_type cardtype;
/* probably should check for Nubus instead */
if (!MACH_IS_MAC)
return ERR_PTR(-ENODEV);
dev = ____alloc_ei_netdev(0);
if (!dev)
return ERR_PTR(-ENOMEM);
if (unit >= 0)
sprintf(dev->name, "eth%d", unit);
while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK, NUBUS_TYPE_ETHERNET,
ndev))) {
/* Have we seen it already? */
if (slots & (1 << ndev->board->slot))
continue;
slots |= 1 << ndev->board->slot;
cardtype = mac8390_ident(ndev);
if (cardtype == MAC8390_NONE)
continue;
if (!mac8390_init(dev, ndev, cardtype))
continue;
/* Do the nasty 8390 stuff */
if (!mac8390_initdev(dev, ndev, cardtype))
break;
}
if (!ndev)
goto out;
err = register_netdev(dev);
if (err)
goto out;
return dev;
out:
free_netdev(dev);
return ERR_PTR(err);
}
#ifdef MODULE
MODULE_AUTHOR("David Huggins-Daines <dhd@debian.org> and others");
MODULE_DESCRIPTION("Macintosh NS8390-based Nubus Ethernet driver");
MODULE_LICENSE("GPL");
/* overkill, of course */
static struct net_device *dev_mac8390[15];
int init_module(void)
{
int i;
for (i = 0; i < 15; i++) {
struct net_device *dev = mac8390_probe(-1);
if (IS_ERR(dev))
break;
dev_mac890[i] = dev;
}
if (!i) {
pr_notice("No useable cards found, driver NOT installed.\n");
return -ENODEV;
}
return 0;
}
void cleanup_module(void)
{
int i;
for (i = 0; i < 15; i++) {
struct net_device *dev = dev_mac890[i];
if (dev) {
unregister_netdev(dev);
free_netdev(dev);
}
}
}
#endif /* MODULE */
static const struct net_device_ops mac8390_netdev_ops = {
.ndo_open = mac8390_open,
.ndo_stop = mac8390_close,
.ndo_start_xmit = __ei_start_xmit,
.ndo_tx_timeout = __ei_tx_timeout,
.ndo_get_stats = __ei_get_stats,
.ndo_set_multicast_list = __ei_set_multicast_list,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
.ndo_change_mtu = eth_change_mtu,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = __ei_poll,
#endif
};
static 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 = 0;
/* Now fill in our stuff */
dev->netdev_ops = &mac8390_netdev_ops;
/* 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;
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;
}
/* Fill in model-specific information and functions */
switch (type) {
case MAC8390_FARALLON:
case MAC8390_APPLE:
switch (mac8390_testio(dev->mem_start)) {
case ACCESS_UNKNOWN:
pr_err("Don't know how to access card memory!\n");
return -ENODEV;
break;
case ACCESS_16:
/* 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;
break;
case ACCESS_32:
/* 32 bit card, register map is reversed */
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;
}
break;
case MAC8390_ASANTE:
/* Some Asante cards pass the 32 bit test
* but overwrite system memory when run at 32 bit.
* so we run them all at 16 bit.
*/
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;
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;
break;
case MAC8390_DAYNA:
case MAC8390_KINETICS:
/* 16 bit memory, register map is forward */
/* 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;
break;
case MAC8390_INTERLAN:
/* 16 bit memory, register map is forward */
ei_status.reset_8390 = interlan_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 = fwrd4_offsets;
break;
default:
pr_err("Card type %s is unsupported, sorry\n",
ndev->board->name);
return -ENODEV;
}
__NS8390_init(dev, 0);
/* Good, done, now spit out some messages */
pr_info("%s: %s in slot %X (type %s)\n",
dev->name, ndev->board->name, ndev->board->slot,
cardname[type]);
pr_info("MAC %pM IRQ %d, %d KB shared memory at %#lx, %d-bit access.\n",
dev->dev_addr, dev->irq,
(unsigned int)(dev->mem_end - dev->mem_start) >> 10,
dev->mem_start, access_bitmode ? 32 : 16);
return 0;
}
static int mac8390_open(struct net_device *dev)
{
int err;
__ei_open(dev);
err = request_irq(dev->irq, __ei_interrupt, 0, "8390 Ethernet", dev);
if (err)
pr_err("%s: unable to get IRQ %d\n", dev->name, dev->irq);
return err;
}
static int mac8390_close(struct net_device *dev)
{
free_irq(dev->irq, dev);
__ei_close(dev);
return 0;
}
static void mac8390_no_reset(struct net_device *dev)
{
ei_status.txing = 0;
if (ei_debug > 1)
pr_info("reset not supported\n");
}
static void interlan_reset(struct net_device *dev)
{
unsigned char *target = nubus_slot_addr(IRQ2SLOT(dev->irq));
if (ei_debug > 1)
pr_info("Need to reset the NS8390 t=%lu...", jiffies);
ei_status.txing = 0;
target[0xC0000] = 0;
if (ei_debug > 1)
pr_cont("reset complete\n");
}
/* 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 char *ptr;
unsigned char *target = to;
from <<= 1; /* word, skip overhead */
ptr = (unsigned char *)(dev->mem_start+from);
/* Leading byte? */
if (from & 2) {
*target++ = ptr[-1];
ptr += 2;
count--;
}
while (count >= 2) {
*(unsigned short *)target = *(unsigned short volatile *)ptr;
ptr += 4; /* skip cruft */
target += 2;
count -= 2;
}
/* Trailing byte? */
if (count)
*target = *ptr;
}
static void dayna_memcpy_tocard(struct net_device *dev, int to,
const void *from, int count)
{
volatile unsigned short *ptr;
const unsigned char *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)|*src++;
ptr++;
count--;
}
while (count >= 2) {
*ptr++ = *(unsigned short *)src; /* Copy and */
ptr++; /* skip cruft */
src += 2;
count -= 2;
}
/* Trailing byte? */
if (count) {
/* card doesn't like byte writes */
*ptr = (*ptr & 0x00FF) | (*src << 8);
}
}
/* 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(hdr, 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 > ei_status.rmem_end) {
/* We must wrap the input move. */
int semi_count = ei_status.rmem_end - xfer_start;
memcpy_fromio(skb->data, dev->mem_start + xfer_base,
semi_count);
count -= semi_count;
memcpy_fromio(skb->data + semi_count, ei_status.rmem_start,
count);
} else {
memcpy_fromio(skb->data, 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(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, 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 > 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);
}
/* 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(hdr, 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, dev->mem_start + xfer_base,
semi_count);
count -= semi_count;
word_memcpy_fromcard(skb->data + semi_count,
ei_status.rmem_start, count);
} else {
word_memcpy_fromcard(skb->data, 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(dev->mem_start + shmem, buf, count);
}
static void word_memcpy_tocard(unsigned long tp, const void *fp, int count)
{
volatile unsigned short *to = (void *)tp;
const unsigned short *from = fp;
count++;
count /= 2;
while (count--)
*to++ = *from++;
}
static void word_memcpy_fromcard(void *tp, unsigned long fp, int count)
{
unsigned short *to = tp;
const volatile unsigned short *from = (const void *)fp;
count++;
count /= 2;
while (count--)
*to++ = *from++;
}