1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
// SPDX-License-Identifier: GPL-2.0-only
/* mvme147.c : the Linux/mvme147/lance ethernet driver
*
* Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
* 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>
/* 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/pgtable.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 */
|
