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.
200 lines
5.7 KiB
200 lines
5.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* mvme147.c : the Linux/mvme147/lance ethernet driver |
|
* |
|
* Copyright (C) 05/1998 Peter Maydell <[email protected]> |
|
* Based on the Sun Lance driver and the NetBSD HP Lance driver |
|
* Uses the generic 7990.c LANCE code. |
|
*/ |
|
|
|
#include <linux/module.h> |
|
#include <linux/kernel.h> |
|
#include <linux/types.h> |
|
#include <linux/interrupt.h> |
|
#include <linux/ioport.h> |
|
#include <linux/string.h> |
|
#include <linux/delay.h> |
|
#include <linux/init.h> |
|
#include <linux/errno.h> |
|
#include <linux/gfp.h> |
|
#include <linux/pgtable.h> |
|
/* Used for the temporal inet entries and routing */ |
|
#include <linux/socket.h> |
|
#include <linux/route.h> |
|
#include <linux/netdevice.h> |
|
#include <linux/etherdevice.h> |
|
#include <linux/skbuff.h> |
|
|
|
#include <asm/io.h> |
|
#include <asm/mvme147hw.h> |
|
|
|
/* We have 32K of RAM for the init block and buffers. This places |
|
* an upper limit on the number of buffers we can use. NetBSD uses 8 Rx |
|
* buffers and 2 Tx buffers, it takes (8 + 2) * 1544 bytes. |
|
*/ |
|
#define LANCE_LOG_TX_BUFFERS 1 |
|
#define LANCE_LOG_RX_BUFFERS 3 |
|
|
|
#include "7990.h" /* use generic LANCE code */ |
|
|
|
/* Our private data structure */ |
|
struct m147lance_private { |
|
struct lance_private lance; |
|
unsigned long ram; |
|
}; |
|
|
|
/* function prototypes... This is easy because all the grot is in the |
|
* generic LANCE support. All we have to support is probing for boards, |
|
* plus board-specific init, open and close actions. |
|
* Oh, and we need to tell the generic code how to read and write LANCE registers... |
|
*/ |
|
static int m147lance_open(struct net_device *dev); |
|
static int m147lance_close(struct net_device *dev); |
|
static void m147lance_writerap(struct lance_private *lp, unsigned short value); |
|
static void m147lance_writerdp(struct lance_private *lp, unsigned short value); |
|
static unsigned short m147lance_readrdp(struct lance_private *lp); |
|
|
|
typedef void (*writerap_t)(void *, unsigned short); |
|
typedef void (*writerdp_t)(void *, unsigned short); |
|
typedef unsigned short (*readrdp_t)(void *); |
|
|
|
static const struct net_device_ops lance_netdev_ops = { |
|
.ndo_open = m147lance_open, |
|
.ndo_stop = m147lance_close, |
|
.ndo_start_xmit = lance_start_xmit, |
|
.ndo_set_rx_mode = lance_set_multicast, |
|
.ndo_tx_timeout = lance_tx_timeout, |
|
.ndo_validate_addr = eth_validate_addr, |
|
.ndo_set_mac_address = eth_mac_addr, |
|
}; |
|
|
|
/* Initialise the one and only on-board 7990 */ |
|
struct net_device * __init mvme147lance_probe(int unit) |
|
{ |
|
struct net_device *dev; |
|
static int called; |
|
static const char name[] = "MVME147 LANCE"; |
|
struct m147lance_private *lp; |
|
u_long *addr; |
|
u_long address; |
|
int err; |
|
|
|
if (!MACH_IS_MVME147 || called) |
|
return ERR_PTR(-ENODEV); |
|
called++; |
|
|
|
dev = alloc_etherdev(sizeof(struct m147lance_private)); |
|
if (!dev) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
if (unit >= 0) |
|
sprintf(dev->name, "eth%d", unit); |
|
|
|
/* Fill the dev fields */ |
|
dev->base_addr = (unsigned long)MVME147_LANCE_BASE; |
|
dev->netdev_ops = &lance_netdev_ops; |
|
dev->dma = 0; |
|
|
|
addr = (u_long *)ETHERNET_ADDRESS; |
|
address = *addr; |
|
dev->dev_addr[0] = 0x08; |
|
dev->dev_addr[1] = 0x00; |
|
dev->dev_addr[2] = 0x3e; |
|
address = address >> 8; |
|
dev->dev_addr[5] = address&0xff; |
|
address = address >> 8; |
|
dev->dev_addr[4] = address&0xff; |
|
address = address >> 8; |
|
dev->dev_addr[3] = address&0xff; |
|
|
|
printk("%s: MVME147 at 0x%08lx, irq %d, Hardware Address %pM\n", |
|
dev->name, dev->base_addr, MVME147_LANCE_IRQ, |
|
dev->dev_addr); |
|
|
|
lp = netdev_priv(dev); |
|
lp->ram = __get_dma_pages(GFP_ATOMIC, 3); /* 32K */ |
|
if (!lp->ram) { |
|
printk("%s: No memory for LANCE buffers\n", dev->name); |
|
free_netdev(dev); |
|
return ERR_PTR(-ENOMEM); |
|
} |
|
|
|
lp->lance.name = name; |
|
lp->lance.base = dev->base_addr; |
|
lp->lance.init_block = (struct lance_init_block *)(lp->ram); /* CPU addr */ |
|
lp->lance.lance_init_block = (struct lance_init_block *)(lp->ram); /* LANCE addr of same RAM */ |
|
lp->lance.busmaster_regval = LE_C3_BSWP; /* we're bigendian */ |
|
lp->lance.irq = MVME147_LANCE_IRQ; |
|
lp->lance.writerap = (writerap_t)m147lance_writerap; |
|
lp->lance.writerdp = (writerdp_t)m147lance_writerdp; |
|
lp->lance.readrdp = (readrdp_t)m147lance_readrdp; |
|
lp->lance.lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS; |
|
lp->lance.lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS; |
|
lp->lance.rx_ring_mod_mask = RX_RING_MOD_MASK; |
|
lp->lance.tx_ring_mod_mask = TX_RING_MOD_MASK; |
|
|
|
err = register_netdev(dev); |
|
if (err) { |
|
free_pages(lp->ram, 3); |
|
free_netdev(dev); |
|
return ERR_PTR(err); |
|
} |
|
|
|
return dev; |
|
} |
|
|
|
static void m147lance_writerap(struct lance_private *lp, unsigned short value) |
|
{ |
|
out_be16(lp->base + LANCE_RAP, value); |
|
} |
|
|
|
static void m147lance_writerdp(struct lance_private *lp, unsigned short value) |
|
{ |
|
out_be16(lp->base + LANCE_RDP, value); |
|
} |
|
|
|
static unsigned short m147lance_readrdp(struct lance_private *lp) |
|
{ |
|
return in_be16(lp->base + LANCE_RDP); |
|
} |
|
|
|
static int m147lance_open(struct net_device *dev) |
|
{ |
|
int status; |
|
|
|
status = lance_open(dev); /* call generic lance open code */ |
|
if (status) |
|
return status; |
|
/* enable interrupts at board level. */ |
|
m147_pcc->lan_cntrl = 0; /* clear the interrupts (if any) */ |
|
m147_pcc->lan_cntrl = 0x08 | 0x04; /* Enable irq 4 */ |
|
|
|
return 0; |
|
} |
|
|
|
static int m147lance_close(struct net_device *dev) |
|
{ |
|
/* disable interrupts at boardlevel */ |
|
m147_pcc->lan_cntrl = 0x0; /* disable interrupts */ |
|
lance_close(dev); |
|
return 0; |
|
} |
|
|
|
#ifdef MODULE |
|
MODULE_LICENSE("GPL"); |
|
|
|
static struct net_device *dev_mvme147_lance; |
|
int __init init_module(void) |
|
{ |
|
dev_mvme147_lance = mvme147lance_probe(-1); |
|
return PTR_ERR_OR_ZERO(dev_mvme147_lance); |
|
} |
|
|
|
void __exit cleanup_module(void) |
|
{ |
|
struct m147lance_private *lp = netdev_priv(dev_mvme147_lance); |
|
unregister_netdev(dev_mvme147_lance); |
|
free_pages(lp->ram, 3); |
|
free_netdev(dev_mvme147_lance); |
|
} |
|
|
|
#endif /* MODULE */
|
|
|