mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
782 lines
20 KiB
782 lines
20 KiB
/* |
|
* Amiga Linux/68k A2065 Ethernet Driver |
|
* |
|
* (C) Copyright 1995-2003 by Geert Uytterhoeven <[email protected]> |
|
* |
|
* Fixes and tips by: |
|
* - Janos Farkas ([email protected]) |
|
* - Jes Degn Soerensen ([email protected]) |
|
* - Matt Domsch ([email protected]) |
|
* |
|
* ---------------------------------------------------------------------------- |
|
* |
|
* This program is based on |
|
* |
|
* ariadne.?: Amiga Linux/68k Ariadne Ethernet Driver |
|
* (C) Copyright 1995 by Geert Uytterhoeven, |
|
* Peter De Schrijver |
|
* |
|
* lance.c: An AMD LANCE ethernet driver for linux. |
|
* Written 1993-94 by Donald Becker. |
|
* |
|
* Am79C960: PCnet(tm)-ISA Single-Chip Ethernet Controller |
|
* Advanced Micro Devices |
|
* Publication #16907, Rev. B, Amendment/0, May 1994 |
|
* |
|
* ---------------------------------------------------------------------------- |
|
* |
|
* This file is subject to the terms and conditions of the GNU General Public |
|
* License. See the file COPYING in the main directory of the Linux |
|
* distribution for more details. |
|
* |
|
* ---------------------------------------------------------------------------- |
|
* |
|
* The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains: |
|
* |
|
* - an Am7990 Local Area Network Controller for Ethernet (LANCE) with |
|
* both 10BASE-2 (thin coax) and AUI (DB-15) connectors |
|
*/ |
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
|
|
|
/*#define DEBUG*/ |
|
/*#define TEST_HITS*/ |
|
|
|
#include <linux/errno.h> |
|
#include <linux/netdevice.h> |
|
#include <linux/etherdevice.h> |
|
#include <linux/module.h> |
|
#include <linux/stddef.h> |
|
#include <linux/kernel.h> |
|
#include <linux/interrupt.h> |
|
#include <linux/ioport.h> |
|
#include <linux/skbuff.h> |
|
#include <linux/string.h> |
|
#include <linux/init.h> |
|
#include <linux/crc32.h> |
|
#include <linux/zorro.h> |
|
#include <linux/bitops.h> |
|
|
|
#include <asm/byteorder.h> |
|
#include <asm/irq.h> |
|
#include <asm/amigaints.h> |
|
#include <asm/amigahw.h> |
|
|
|
#include "a2065.h" |
|
|
|
/* Transmit/Receive Ring Definitions */ |
|
|
|
#define LANCE_LOG_TX_BUFFERS (2) |
|
#define LANCE_LOG_RX_BUFFERS (4) |
|
|
|
#define TX_RING_SIZE (1 << LANCE_LOG_TX_BUFFERS) |
|
#define RX_RING_SIZE (1 << LANCE_LOG_RX_BUFFERS) |
|
|
|
#define TX_RING_MOD_MASK (TX_RING_SIZE - 1) |
|
#define RX_RING_MOD_MASK (RX_RING_SIZE - 1) |
|
|
|
#define PKT_BUF_SIZE (1544) |
|
#define RX_BUFF_SIZE PKT_BUF_SIZE |
|
#define TX_BUFF_SIZE PKT_BUF_SIZE |
|
|
|
/* Layout of the Lance's RAM Buffer */ |
|
|
|
struct lance_init_block { |
|
unsigned short mode; /* Pre-set mode (reg. 15) */ |
|
unsigned char phys_addr[6]; /* Physical ethernet address */ |
|
unsigned filter[2]; /* Multicast filter. */ |
|
|
|
/* Receive and transmit ring base, along with extra bits. */ |
|
unsigned short rx_ptr; /* receive descriptor addr */ |
|
unsigned short rx_len; /* receive len and high addr */ |
|
unsigned short tx_ptr; /* transmit descriptor addr */ |
|
unsigned short tx_len; /* transmit len and high addr */ |
|
|
|
/* The Tx and Rx ring entries must aligned on 8-byte boundaries. */ |
|
struct lance_rx_desc brx_ring[RX_RING_SIZE]; |
|
struct lance_tx_desc btx_ring[TX_RING_SIZE]; |
|
|
|
char rx_buf[RX_RING_SIZE][RX_BUFF_SIZE]; |
|
char tx_buf[TX_RING_SIZE][TX_BUFF_SIZE]; |
|
}; |
|
|
|
/* Private Device Data */ |
|
|
|
struct lance_private { |
|
char *name; |
|
volatile struct lance_regs *ll; |
|
volatile struct lance_init_block *init_block; /* Hosts view */ |
|
volatile struct lance_init_block *lance_init_block; /* Lance view */ |
|
|
|
int rx_new, tx_new; |
|
int rx_old, tx_old; |
|
|
|
int lance_log_rx_bufs, lance_log_tx_bufs; |
|
int rx_ring_mod_mask, tx_ring_mod_mask; |
|
|
|
int tpe; /* cable-selection is TPE */ |
|
int auto_select; /* cable-selection by carrier */ |
|
unsigned short busmaster_regval; |
|
|
|
struct timer_list multicast_timer; |
|
struct net_device *dev; |
|
}; |
|
|
|
#define LANCE_ADDR(x) ((int)(x) & ~0xff000000) |
|
|
|
/* Load the CSR registers */ |
|
static void load_csrs(struct lance_private *lp) |
|
{ |
|
volatile struct lance_regs *ll = lp->ll; |
|
volatile struct lance_init_block *aib = lp->lance_init_block; |
|
int leptr = LANCE_ADDR(aib); |
|
|
|
ll->rap = LE_CSR1; |
|
ll->rdp = (leptr & 0xFFFF); |
|
ll->rap = LE_CSR2; |
|
ll->rdp = leptr >> 16; |
|
ll->rap = LE_CSR3; |
|
ll->rdp = lp->busmaster_regval; |
|
|
|
/* Point back to csr0 */ |
|
ll->rap = LE_CSR0; |
|
} |
|
|
|
/* Setup the Lance Rx and Tx rings */ |
|
static void lance_init_ring(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_init_block *ib = lp->init_block; |
|
volatile struct lance_init_block *aib = lp->lance_init_block; |
|
/* for LANCE_ADDR computations */ |
|
int leptr; |
|
int i; |
|
|
|
/* Lock out other processes while setting up hardware */ |
|
netif_stop_queue(dev); |
|
lp->rx_new = lp->tx_new = 0; |
|
lp->rx_old = lp->tx_old = 0; |
|
|
|
ib->mode = 0; |
|
|
|
/* Copy the ethernet address to the lance init block |
|
* Note that on the sparc you need to swap the ethernet address. |
|
*/ |
|
ib->phys_addr[0] = dev->dev_addr[1]; |
|
ib->phys_addr[1] = dev->dev_addr[0]; |
|
ib->phys_addr[2] = dev->dev_addr[3]; |
|
ib->phys_addr[3] = dev->dev_addr[2]; |
|
ib->phys_addr[4] = dev->dev_addr[5]; |
|
ib->phys_addr[5] = dev->dev_addr[4]; |
|
|
|
/* Setup the Tx ring entries */ |
|
netdev_dbg(dev, "TX rings:\n"); |
|
for (i = 0; i <= 1 << lp->lance_log_tx_bufs; i++) { |
|
leptr = LANCE_ADDR(&aib->tx_buf[i][0]); |
|
ib->btx_ring[i].tmd0 = leptr; |
|
ib->btx_ring[i].tmd1_hadr = leptr >> 16; |
|
ib->btx_ring[i].tmd1_bits = 0; |
|
ib->btx_ring[i].length = 0xf000; /* The ones required by tmd2 */ |
|
ib->btx_ring[i].misc = 0; |
|
if (i < 3) |
|
netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); |
|
} |
|
|
|
/* Setup the Rx ring entries */ |
|
netdev_dbg(dev, "RX rings:\n"); |
|
for (i = 0; i < 1 << lp->lance_log_rx_bufs; i++) { |
|
leptr = LANCE_ADDR(&aib->rx_buf[i][0]); |
|
|
|
ib->brx_ring[i].rmd0 = leptr; |
|
ib->brx_ring[i].rmd1_hadr = leptr >> 16; |
|
ib->brx_ring[i].rmd1_bits = LE_R1_OWN; |
|
ib->brx_ring[i].length = -RX_BUFF_SIZE | 0xf000; |
|
ib->brx_ring[i].mblength = 0; |
|
if (i < 3) |
|
netdev_dbg(dev, "%d: 0x%08x\n", i, leptr); |
|
} |
|
|
|
/* Setup the initialization block */ |
|
|
|
/* Setup rx descriptor pointer */ |
|
leptr = LANCE_ADDR(&aib->brx_ring); |
|
ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16); |
|
ib->rx_ptr = leptr; |
|
netdev_dbg(dev, "RX ptr: %08x\n", leptr); |
|
|
|
/* Setup tx descriptor pointer */ |
|
leptr = LANCE_ADDR(&aib->btx_ring); |
|
ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16); |
|
ib->tx_ptr = leptr; |
|
netdev_dbg(dev, "TX ptr: %08x\n", leptr); |
|
|
|
/* Clear the multicast filter */ |
|
ib->filter[0] = 0; |
|
ib->filter[1] = 0; |
|
} |
|
|
|
static int init_restart_lance(struct lance_private *lp) |
|
{ |
|
volatile struct lance_regs *ll = lp->ll; |
|
int i; |
|
|
|
ll->rap = LE_CSR0; |
|
ll->rdp = LE_C0_INIT; |
|
|
|
/* Wait for the lance to complete initialization */ |
|
for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++) |
|
barrier(); |
|
if ((i == 100) || (ll->rdp & LE_C0_ERR)) { |
|
pr_err("unopened after %d ticks, csr0=%04x\n", i, ll->rdp); |
|
return -EIO; |
|
} |
|
|
|
/* Clear IDON by writing a "1", enable interrupts and start lance */ |
|
ll->rdp = LE_C0_IDON; |
|
ll->rdp = LE_C0_INEA | LE_C0_STRT; |
|
|
|
return 0; |
|
} |
|
|
|
static int lance_rx(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_init_block *ib = lp->init_block; |
|
volatile struct lance_regs *ll = lp->ll; |
|
volatile struct lance_rx_desc *rd; |
|
unsigned char bits; |
|
|
|
#ifdef TEST_HITS |
|
int i; |
|
char buf[RX_RING_SIZE + 1]; |
|
|
|
for (i = 0; i < RX_RING_SIZE; i++) { |
|
char r1_own = ib->brx_ring[i].rmd1_bits & LE_R1_OWN; |
|
if (i == lp->rx_new) |
|
buf[i] = r1_own ? '_' : 'X'; |
|
else |
|
buf[i] = r1_own ? '.' : '1'; |
|
} |
|
buf[RX_RING_SIZE] = 0; |
|
|
|
pr_debug("RxRing TestHits: [%s]\n", buf); |
|
#endif |
|
|
|
ll->rdp = LE_C0_RINT | LE_C0_INEA; |
|
for (rd = &ib->brx_ring[lp->rx_new]; |
|
!((bits = rd->rmd1_bits) & LE_R1_OWN); |
|
rd = &ib->brx_ring[lp->rx_new]) { |
|
|
|
/* We got an incomplete frame? */ |
|
if ((bits & LE_R1_POK) != LE_R1_POK) { |
|
dev->stats.rx_over_errors++; |
|
dev->stats.rx_errors++; |
|
continue; |
|
} else if (bits & LE_R1_ERR) { |
|
/* Count only the end frame as a rx error, |
|
* not the beginning |
|
*/ |
|
if (bits & LE_R1_BUF) |
|
dev->stats.rx_fifo_errors++; |
|
if (bits & LE_R1_CRC) |
|
dev->stats.rx_crc_errors++; |
|
if (bits & LE_R1_OFL) |
|
dev->stats.rx_over_errors++; |
|
if (bits & LE_R1_FRA) |
|
dev->stats.rx_frame_errors++; |
|
if (bits & LE_R1_EOP) |
|
dev->stats.rx_errors++; |
|
} else { |
|
int len = (rd->mblength & 0xfff) - 4; |
|
struct sk_buff *skb = netdev_alloc_skb(dev, len + 2); |
|
|
|
if (!skb) { |
|
dev->stats.rx_dropped++; |
|
rd->mblength = 0; |
|
rd->rmd1_bits = LE_R1_OWN; |
|
lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; |
|
return 0; |
|
} |
|
|
|
skb_reserve(skb, 2); /* 16 byte align */ |
|
skb_put(skb, len); /* make room */ |
|
skb_copy_to_linear_data(skb, |
|
(unsigned char *)&ib->rx_buf[lp->rx_new][0], |
|
len); |
|
skb->protocol = eth_type_trans(skb, dev); |
|
netif_rx(skb); |
|
dev->stats.rx_packets++; |
|
dev->stats.rx_bytes += len; |
|
} |
|
|
|
/* Return the packet to the pool */ |
|
rd->mblength = 0; |
|
rd->rmd1_bits = LE_R1_OWN; |
|
lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask; |
|
} |
|
return 0; |
|
} |
|
|
|
static int lance_tx(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_init_block *ib = lp->init_block; |
|
volatile struct lance_regs *ll = lp->ll; |
|
volatile struct lance_tx_desc *td; |
|
int i, j; |
|
int status; |
|
|
|
/* csr0 is 2f3 */ |
|
ll->rdp = LE_C0_TINT | LE_C0_INEA; |
|
/* csr0 is 73 */ |
|
|
|
j = lp->tx_old; |
|
for (i = j; i != lp->tx_new; i = j) { |
|
td = &ib->btx_ring[i]; |
|
|
|
/* If we hit a packet not owned by us, stop */ |
|
if (td->tmd1_bits & LE_T1_OWN) |
|
break; |
|
|
|
if (td->tmd1_bits & LE_T1_ERR) { |
|
status = td->misc; |
|
|
|
dev->stats.tx_errors++; |
|
if (status & LE_T3_RTY) |
|
dev->stats.tx_aborted_errors++; |
|
if (status & LE_T3_LCOL) |
|
dev->stats.tx_window_errors++; |
|
|
|
if (status & LE_T3_CLOS) { |
|
dev->stats.tx_carrier_errors++; |
|
if (lp->auto_select) { |
|
lp->tpe = 1 - lp->tpe; |
|
netdev_err(dev, "Carrier Lost, trying %s\n", |
|
lp->tpe ? "TPE" : "AUI"); |
|
/* Stop the lance */ |
|
ll->rap = LE_CSR0; |
|
ll->rdp = LE_C0_STOP; |
|
lance_init_ring(dev); |
|
load_csrs(lp); |
|
init_restart_lance(lp); |
|
return 0; |
|
} |
|
} |
|
|
|
/* buffer errors and underflows turn off |
|
* the transmitter, so restart the adapter |
|
*/ |
|
if (status & (LE_T3_BUF | LE_T3_UFL)) { |
|
dev->stats.tx_fifo_errors++; |
|
|
|
netdev_err(dev, "Tx: ERR_BUF|ERR_UFL, restarting\n"); |
|
/* Stop the lance */ |
|
ll->rap = LE_CSR0; |
|
ll->rdp = LE_C0_STOP; |
|
lance_init_ring(dev); |
|
load_csrs(lp); |
|
init_restart_lance(lp); |
|
return 0; |
|
} |
|
} else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) { |
|
/* So we don't count the packet more than once. */ |
|
td->tmd1_bits &= ~(LE_T1_POK); |
|
|
|
/* One collision before packet was sent. */ |
|
if (td->tmd1_bits & LE_T1_EONE) |
|
dev->stats.collisions++; |
|
|
|
/* More than one collision, be optimistic. */ |
|
if (td->tmd1_bits & LE_T1_EMORE) |
|
dev->stats.collisions += 2; |
|
|
|
dev->stats.tx_packets++; |
|
} |
|
|
|
j = (j + 1) & lp->tx_ring_mod_mask; |
|
} |
|
lp->tx_old = j; |
|
ll->rdp = LE_C0_TINT | LE_C0_INEA; |
|
return 0; |
|
} |
|
|
|
static int lance_tx_buffs_avail(struct lance_private *lp) |
|
{ |
|
if (lp->tx_old <= lp->tx_new) |
|
return lp->tx_old + lp->tx_ring_mod_mask - lp->tx_new; |
|
return lp->tx_old - lp->tx_new - 1; |
|
} |
|
|
|
static irqreturn_t lance_interrupt(int irq, void *dev_id) |
|
{ |
|
struct net_device *dev = dev_id; |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
int csr0; |
|
|
|
ll->rap = LE_CSR0; /* LANCE Controller Status */ |
|
csr0 = ll->rdp; |
|
|
|
if (!(csr0 & LE_C0_INTR)) /* Check if any interrupt has */ |
|
return IRQ_NONE; /* been generated by the Lance. */ |
|
|
|
/* Acknowledge all the interrupt sources ASAP */ |
|
ll->rdp = csr0 & ~(LE_C0_INEA | LE_C0_TDMD | LE_C0_STOP | LE_C0_STRT | |
|
LE_C0_INIT); |
|
|
|
if (csr0 & LE_C0_ERR) { |
|
/* Clear the error condition */ |
|
ll->rdp = LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | LE_C0_INEA; |
|
} |
|
|
|
if (csr0 & LE_C0_RINT) |
|
lance_rx(dev); |
|
|
|
if (csr0 & LE_C0_TINT) |
|
lance_tx(dev); |
|
|
|
/* Log misc errors. */ |
|
if (csr0 & LE_C0_BABL) |
|
dev->stats.tx_errors++; /* Tx babble. */ |
|
if (csr0 & LE_C0_MISS) |
|
dev->stats.rx_errors++; /* Missed a Rx frame. */ |
|
if (csr0 & LE_C0_MERR) { |
|
netdev_err(dev, "Bus master arbitration failure, status %04x\n", |
|
csr0); |
|
/* Restart the chip. */ |
|
ll->rdp = LE_C0_STRT; |
|
} |
|
|
|
if (netif_queue_stopped(dev) && lance_tx_buffs_avail(lp) > 0) |
|
netif_wake_queue(dev); |
|
|
|
ll->rap = LE_CSR0; |
|
ll->rdp = (LE_C0_BABL | LE_C0_CERR | LE_C0_MISS | LE_C0_MERR | |
|
LE_C0_IDON | LE_C0_INEA); |
|
return IRQ_HANDLED; |
|
} |
|
|
|
static int lance_open(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
int ret; |
|
|
|
/* Stop the Lance */ |
|
ll->rap = LE_CSR0; |
|
ll->rdp = LE_C0_STOP; |
|
|
|
/* Install the Interrupt handler */ |
|
ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED, |
|
dev->name, dev); |
|
if (ret) |
|
return ret; |
|
|
|
load_csrs(lp); |
|
lance_init_ring(dev); |
|
|
|
netif_start_queue(dev); |
|
|
|
return init_restart_lance(lp); |
|
} |
|
|
|
static int lance_close(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
|
|
netif_stop_queue(dev); |
|
del_timer_sync(&lp->multicast_timer); |
|
|
|
/* Stop the card */ |
|
ll->rap = LE_CSR0; |
|
ll->rdp = LE_C0_STOP; |
|
|
|
free_irq(IRQ_AMIGA_PORTS, dev); |
|
return 0; |
|
} |
|
|
|
static inline int lance_reset(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
int status; |
|
|
|
/* Stop the lance */ |
|
ll->rap = LE_CSR0; |
|
ll->rdp = LE_C0_STOP; |
|
|
|
load_csrs(lp); |
|
|
|
lance_init_ring(dev); |
|
netif_trans_update(dev); /* prevent tx timeout */ |
|
netif_start_queue(dev); |
|
|
|
status = init_restart_lance(lp); |
|
netdev_dbg(dev, "Lance restart=%d\n", status); |
|
|
|
return status; |
|
} |
|
|
|
static void lance_tx_timeout(struct net_device *dev, unsigned int txqueue) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
|
|
netdev_err(dev, "transmit timed out, status %04x, reset\n", ll->rdp); |
|
lance_reset(dev); |
|
netif_wake_queue(dev); |
|
} |
|
|
|
static netdev_tx_t lance_start_xmit(struct sk_buff *skb, |
|
struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_regs *ll = lp->ll; |
|
volatile struct lance_init_block *ib = lp->init_block; |
|
int entry, skblen; |
|
int status = NETDEV_TX_OK; |
|
unsigned long flags; |
|
|
|
if (skb_padto(skb, ETH_ZLEN)) |
|
return NETDEV_TX_OK; |
|
skblen = max_t(unsigned, skb->len, ETH_ZLEN); |
|
|
|
local_irq_save(flags); |
|
|
|
if (!lance_tx_buffs_avail(lp)) |
|
goto out_free; |
|
|
|
/* dump the packet */ |
|
print_hex_dump_debug("skb->data: ", DUMP_PREFIX_NONE, 16, 1, skb->data, |
|
64, true); |
|
|
|
entry = lp->tx_new & lp->tx_ring_mod_mask; |
|
ib->btx_ring[entry].length = (-skblen) | 0xf000; |
|
ib->btx_ring[entry].misc = 0; |
|
|
|
skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen); |
|
|
|
/* Now, give the packet to the lance */ |
|
ib->btx_ring[entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN); |
|
lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask; |
|
dev->stats.tx_bytes += skblen; |
|
|
|
if (lance_tx_buffs_avail(lp) <= 0) |
|
netif_stop_queue(dev); |
|
|
|
/* Kick the lance: transmit now */ |
|
ll->rdp = LE_C0_INEA | LE_C0_TDMD; |
|
out_free: |
|
dev_kfree_skb(skb); |
|
|
|
local_irq_restore(flags); |
|
|
|
return status; |
|
} |
|
|
|
/* taken from the depca driver */ |
|
static void lance_load_multicast(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_init_block *ib = lp->init_block; |
|
volatile u16 *mcast_table = (u16 *)&ib->filter; |
|
struct netdev_hw_addr *ha; |
|
u32 crc; |
|
|
|
/* set all multicast bits */ |
|
if (dev->flags & IFF_ALLMULTI) { |
|
ib->filter[0] = 0xffffffff; |
|
ib->filter[1] = 0xffffffff; |
|
return; |
|
} |
|
/* clear the multicast filter */ |
|
ib->filter[0] = 0; |
|
ib->filter[1] = 0; |
|
|
|
/* Add addresses */ |
|
netdev_for_each_mc_addr(ha, dev) { |
|
crc = ether_crc_le(6, ha->addr); |
|
crc = crc >> 26; |
|
mcast_table[crc >> 4] |= 1 << (crc & 0xf); |
|
} |
|
} |
|
|
|
static void lance_set_multicast(struct net_device *dev) |
|
{ |
|
struct lance_private *lp = netdev_priv(dev); |
|
volatile struct lance_init_block *ib = lp->init_block; |
|
volatile struct lance_regs *ll = lp->ll; |
|
|
|
if (!netif_running(dev)) |
|
return; |
|
|
|
if (lp->tx_old != lp->tx_new) { |
|
mod_timer(&lp->multicast_timer, jiffies + 4); |
|
netif_wake_queue(dev); |
|
return; |
|
} |
|
|
|
netif_stop_queue(dev); |
|
|
|
ll->rap = LE_CSR0; |
|
ll->rdp = LE_C0_STOP; |
|
lance_init_ring(dev); |
|
|
|
if (dev->flags & IFF_PROMISC) { |
|
ib->mode |= LE_MO_PROM; |
|
} else { |
|
ib->mode &= ~LE_MO_PROM; |
|
lance_load_multicast(dev); |
|
} |
|
load_csrs(lp); |
|
init_restart_lance(lp); |
|
netif_wake_queue(dev); |
|
} |
|
|
|
static void lance_set_multicast_retry(struct timer_list *t) |
|
{ |
|
struct lance_private *lp = from_timer(lp, t, multicast_timer); |
|
|
|
lance_set_multicast(lp->dev); |
|
} |
|
|
|
static int a2065_init_one(struct zorro_dev *z, |
|
const struct zorro_device_id *ent); |
|
static void a2065_remove_one(struct zorro_dev *z); |
|
|
|
|
|
static const struct zorro_device_id a2065_zorro_tbl[] = { |
|
{ ZORRO_PROD_CBM_A2065_1 }, |
|
{ ZORRO_PROD_CBM_A2065_2 }, |
|
{ ZORRO_PROD_AMERISTAR_A2065 }, |
|
{ 0 } |
|
}; |
|
MODULE_DEVICE_TABLE(zorro, a2065_zorro_tbl); |
|
|
|
static struct zorro_driver a2065_driver = { |
|
.name = "a2065", |
|
.id_table = a2065_zorro_tbl, |
|
.probe = a2065_init_one, |
|
.remove = a2065_remove_one, |
|
}; |
|
|
|
static const struct net_device_ops lance_netdev_ops = { |
|
.ndo_open = lance_open, |
|
.ndo_stop = lance_close, |
|
.ndo_start_xmit = lance_start_xmit, |
|
.ndo_tx_timeout = lance_tx_timeout, |
|
.ndo_set_rx_mode = lance_set_multicast, |
|
.ndo_validate_addr = eth_validate_addr, |
|
.ndo_set_mac_address = eth_mac_addr, |
|
}; |
|
|
|
static int a2065_init_one(struct zorro_dev *z, |
|
const struct zorro_device_id *ent) |
|
{ |
|
struct net_device *dev; |
|
struct lance_private *priv; |
|
unsigned long board = z->resource.start; |
|
unsigned long base_addr = board + A2065_LANCE; |
|
unsigned long mem_start = board + A2065_RAM; |
|
struct resource *r1, *r2; |
|
u32 serial; |
|
int err; |
|
|
|
r1 = request_mem_region(base_addr, sizeof(struct lance_regs), |
|
"Am7990"); |
|
if (!r1) |
|
return -EBUSY; |
|
r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM"); |
|
if (!r2) { |
|
release_mem_region(base_addr, sizeof(struct lance_regs)); |
|
return -EBUSY; |
|
} |
|
|
|
dev = alloc_etherdev(sizeof(struct lance_private)); |
|
if (dev == NULL) { |
|
release_mem_region(base_addr, sizeof(struct lance_regs)); |
|
release_mem_region(mem_start, A2065_RAM_SIZE); |
|
return -ENOMEM; |
|
} |
|
|
|
priv = netdev_priv(dev); |
|
|
|
r1->name = dev->name; |
|
r2->name = dev->name; |
|
|
|
serial = be32_to_cpu(z->rom.er_SerialNumber); |
|
dev->dev_addr[0] = 0x00; |
|
if (z->id != ZORRO_PROD_AMERISTAR_A2065) { /* Commodore */ |
|
dev->dev_addr[1] = 0x80; |
|
dev->dev_addr[2] = 0x10; |
|
} else { /* Ameristar */ |
|
dev->dev_addr[1] = 0x00; |
|
dev->dev_addr[2] = 0x9f; |
|
} |
|
dev->dev_addr[3] = (serial >> 16) & 0xff; |
|
dev->dev_addr[4] = (serial >> 8) & 0xff; |
|
dev->dev_addr[5] = serial & 0xff; |
|
dev->base_addr = (unsigned long)ZTWO_VADDR(base_addr); |
|
dev->mem_start = (unsigned long)ZTWO_VADDR(mem_start); |
|
dev->mem_end = dev->mem_start + A2065_RAM_SIZE; |
|
|
|
priv->ll = (volatile struct lance_regs *)dev->base_addr; |
|
priv->init_block = (struct lance_init_block *)dev->mem_start; |
|
priv->lance_init_block = (struct lance_init_block *)A2065_RAM; |
|
priv->auto_select = 0; |
|
priv->busmaster_regval = LE_C3_BSWP; |
|
|
|
priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS; |
|
priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS; |
|
priv->rx_ring_mod_mask = RX_RING_MOD_MASK; |
|
priv->tx_ring_mod_mask = TX_RING_MOD_MASK; |
|
priv->dev = dev; |
|
|
|
dev->netdev_ops = &lance_netdev_ops; |
|
dev->watchdog_timeo = 5*HZ; |
|
dev->dma = 0; |
|
|
|
timer_setup(&priv->multicast_timer, lance_set_multicast_retry, 0); |
|
|
|
err = register_netdev(dev); |
|
if (err) { |
|
release_mem_region(base_addr, sizeof(struct lance_regs)); |
|
release_mem_region(mem_start, A2065_RAM_SIZE); |
|
free_netdev(dev); |
|
return err; |
|
} |
|
zorro_set_drvdata(z, dev); |
|
|
|
netdev_info(dev, "A2065 at 0x%08lx, Ethernet Address %pM\n", |
|
board, dev->dev_addr); |
|
|
|
return 0; |
|
} |
|
|
|
|
|
static void a2065_remove_one(struct zorro_dev *z) |
|
{ |
|
struct net_device *dev = zorro_get_drvdata(z); |
|
|
|
unregister_netdev(dev); |
|
release_mem_region(ZTWO_PADDR(dev->base_addr), |
|
sizeof(struct lance_regs)); |
|
release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE); |
|
free_netdev(dev); |
|
} |
|
|
|
static int __init a2065_init_module(void) |
|
{ |
|
return zorro_register_driver(&a2065_driver); |
|
} |
|
|
|
static void __exit a2065_cleanup_module(void) |
|
{ |
|
zorro_unregister_driver(&a2065_driver); |
|
} |
|
|
|
module_init(a2065_init_module); |
|
module_exit(a2065_cleanup_module); |
|
|
|
MODULE_LICENSE("GPL");
|
|
|