[net-next-2.6.git] / drivers / net / mvme147.c

/* 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/slab.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/errno.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/system.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/mvme147hw.h>

/* We have 16834 bytes 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.
 */
#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 *);

/* 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);

	SET_MODULE_OWNER(dev);

	/* Fill the dev fields */
	dev->base_addr = (unsigned long)MVME147_LANCE_BASE;
	dev->open = &m147lance_open;
	dev->stop = &m147lance_close;
	dev->hard_start_xmit = &lance_start_xmit;
	dev->get_stats = &lance_get_stats;
	dev->set_multicast_list = &lance_set_multicast;
	dev->tx_timeout = &lance_tx_timeout;
	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 %02x:%02x:%02x:%02x:%02x:%02x\n",
		dev->name, dev->base_addr, MVME147_LANCE_IRQ,
		dev->dev_addr[0],
		dev->dev_addr[1], dev->dev_addr[2],
		dev->dev_addr[3], dev->dev_addr[4],
		dev->dev_addr[5]);

	lp = (struct m147lance_private *)dev->priv;
	lp->ram = __get_dma_pages(GFP_ATOMIC, 3);	/* 16K */
	if (!lp->ram)
	{
		printk("%s: No memory for LANCE buffers\n", dev->name);
		free_netdev(dev);
		return ERR_PTR(-ENOMEM);
	}

	lp->lance.name = (char*)name;                   /* discards const, shut up gcc */
	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_module(void)
{
	dev_mvme147_lance = mvme147lance_probe(-1);
	if (IS_ERR(dev_mvme147_lance))
		return PTR_ERR(dev_mvme147_lance);
	return 0;
}

void cleanup_module(void)
{
	struct m147lance_private *lp = dev_mvme147_lance->priv;
	unregister_netdev(dev_mvme147_lance);
	free_pages(lp->ram, 3);
	free_netdev(dev_mvme147_lance);
}

#endif /* MODULE */
Commit	Line	Data
1da177e4 LT	1	/* mvme147.c : the Linux/mvme147/lance ethernet driver
	2	*
	3	* Copyright (C) 05/1998 Peter Maydell <pmaydell@chiark.greenend.org.uk>
	4	* Based on the Sun Lance driver and the NetBSD HP Lance driver
	5	* Uses the generic 7990.c LANCE code.
	6	*/
	7
	8	#include <linux/module.h>
	9	#include <linux/kernel.h>
	10	#include <linux/types.h>
	11	#include <linux/interrupt.h>
	12	#include <linux/ioport.h>
	13	#include <linux/slab.h>
	14	#include <linux/string.h>
	15	#include <linux/delay.h>
	16	#include <linux/init.h>
	17	#include <linux/errno.h>
	18	/* Used for the temporal inet entries and routing */
	19	#include <linux/socket.h>
	20	#include <linux/route.h>
	21	#include <linux/netdevice.h>
	22	#include <linux/etherdevice.h>
	23	#include <linux/skbuff.h>
	24
	25	#include <asm/system.h>
	26	#include <asm/io.h>
	27	#include <asm/pgtable.h>
	28	#include <asm/mvme147hw.h>
	29
	30	/* We have 16834 bytes of RAM for the init block and buffers. This places
	31	* an upper limit on the number of buffers we can use. NetBSD uses 8 Rx
	32	* buffers and 2 Tx buffers.
	33	*/
	34	#define LANCE_LOG_TX_BUFFERS 1
	35	#define LANCE_LOG_RX_BUFFERS 3
	36
	37	#include "7990.h" /* use generic LANCE code */
	38
	39	/* Our private data structure */
	40	struct m147lance_private {
	41	struct lance_private lance;
	42	unsigned long ram;
	43	};
	44
	45	/* function prototypes... This is easy because all the grot is in the
	46	* generic LANCE support. All we have to support is probing for boards,
	47	* plus board-specific init, open and close actions.
	48	* Oh, and we need to tell the generic code how to read and write LANCE registers...
	49	*/
	50	static int m147lance_open(struct net_device *dev);
	51	static int m147lance_close(struct net_device *dev);
	52	static void m147lance_writerap(struct lance_private *lp, unsigned short value);
	53	static void m147lance_writerdp(struct lance_private *lp, unsigned short value);
	54	static unsigned short m147lance_readrdp(struct lance_private *lp);
	55
	56	typedef void (writerap_t)(void , unsigned short);
	57	typedef void (writerdp_t)(void , unsigned short);
	58	typedef unsigned short (readrdp_t)(void );
	59
	60	/* Initialise the one and only on-board 7990 */
	61	struct net_device * __init mvme147lance_probe(int unit)
	62	{
	63	struct net_device *dev;
	64	static int called;
65	static const char name[] = "MVME147 LANCE";
66	struct m147lance_private *lp;
67	u_long *addr;
68	u_long address;
69	int err;
70
71	if (!MACH_IS_MVME147 \|\| called)
72	return ERR_PTR(-ENODEV);
73	called++;
74
75	dev = alloc_etherdev(sizeof(struct m147lance_private));
76	if (!dev)
77	return ERR_PTR(-ENOMEM);
78
79	if (unit >= 0)
80	sprintf(dev->name, "eth%d", unit);
81
82	SET_MODULE_OWNER(dev);
83
84	/* Fill the dev fields */
85	dev->base_addr = (unsigned long)MVME147_LANCE_BASE;
86	dev->open = &m147lance_open;
87	dev->stop = &m147lance_close;
88	dev->hard_start_xmit = &lance_start_xmit;
89	dev->get_stats = &lance_get_stats;
90	dev->set_multicast_list = &lance_set_multicast;
91	dev->tx_timeout = &lance_tx_timeout;
92	dev->dma = 0;
93
94	addr=(u_long *)ETHERNET_ADDRESS;
95	address = *addr;
96	dev->dev_addr[0]=0x08;
97	dev->dev_addr[1]=0x00;
98	dev->dev_addr[2]=0x3e;
99	address=address>>8;
100	dev->dev_addr[5]=address&0xff;
101	address=address>>8;
102	dev->dev_addr[4]=address&0xff;
103	address=address>>8;
104	dev->dev_addr[3]=address&0xff;
105
106	printk("%s: MVME147 at 0x%08lx, irq %d, Hardware Address %02x:%02x:%02x:%02x:%02x:%02x\n",
107	dev->name, dev->base_addr, MVME147_LANCE_IRQ,
108	dev->dev_addr[0],
109	dev->dev_addr[1], dev->dev_addr[2],
110	dev->dev_addr[3], dev->dev_addr[4],
111	dev->dev_addr[5]);
112
113	lp = (struct m147lance_private *)dev->priv;
114	lp->ram = __get_dma_pages(GFP_ATOMIC, 3); /* 16K */
115	if (!lp->ram)
116	{
117	printk("%s: No memory for LANCE buffers\n", dev->name);
118	free_netdev(dev);
119	return ERR_PTR(-ENOMEM);
120	}
121
122	lp->lance.name = (char)name; / discards const, shut up gcc */
123	lp->lance.base = dev->base_addr;
124	lp->lance.init_block = (struct lance_init_block )(lp->ram); / CPU addr */
125	lp->lance.lance_init_block = (struct lance_init_block )(lp->ram); / LANCE addr of same RAM */
126	lp->lance.busmaster_regval = LE_C3_BSWP; /* we're bigendian */
127	lp->lance.irq = MVME147_LANCE_IRQ;
128	lp->lance.writerap = (writerap_t)m147lance_writerap;
129	lp->lance.writerdp = (writerdp_t)m147lance_writerdp;
130	lp->lance.readrdp = (readrdp_t)m147lance_readrdp;
131	lp->lance.lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS;
132	lp->lance.lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS;
133	lp->lance.rx_ring_mod_mask = RX_RING_MOD_MASK;
134	lp->lance.tx_ring_mod_mask = TX_RING_MOD_MASK;
135
136	err = register_netdev(dev);
137	if (err) {
138	free_pages(lp->ram, 3);
139	free_netdev(dev);
140	return ERR_PTR(err);
141	}
142
143	return dev;
144	}
145
146	static void m147lance_writerap(struct lance_private *lp, unsigned short value)
147	{
148	out_be16(lp->base + LANCE_RAP, value);
149	}
150
151	static void m147lance_writerdp(struct lance_private *lp, unsigned short value)
152	{
153	out_be16(lp->base + LANCE_RDP, value);
154	}
155
156	static unsigned short m147lance_readrdp(struct lance_private *lp)
157	{
158	return in_be16(lp->base + LANCE_RDP);
159	}
160
161	static int m147lance_open(struct net_device *dev)
162	{
163	int status;
164
165	status = lance_open(dev); /* call generic lance open code */
166	if (status)
167	return status;
168	/* enable interrupts at board level. */
169	m147_pcc->lan_cntrl=0; /* clear the interrupts (if any) */
170	m147_pcc->lan_cntrl=0x08 \| 0x04; /* Enable irq 4 */
171
172	return 0;
173	}
174
175	static int m147lance_close(struct net_device *dev)
176	{
177	/* disable interrupts at boardlevel */
178	m147_pcc->lan_cntrl=0x0; /* disable interrupts */
179	lance_close(dev);
180	return 0;
181	}
182
183	#ifdef MODULE
184	MODULE_LICENSE("GPL");
185
186	static struct net_device *dev_mvme147_lance;
187	int init_module(void)
188	{
189	dev_mvme147_lance = mvme147lance_probe(-1);
190	if (IS_ERR(dev_mvme147_lance))
191	return PTR_ERR(dev_mvme147_lance);
192	return 0;
193	}
194
195	void cleanup_module(void)
196	{
197	struct m147lance_private *lp = dev_mvme147_lance->priv;
198	unregister_netdev(dev_mvme147_lance);
199	free_pages(lp->ram, 3);
200	free_netdev(dev_mvme147_lance);
201	}
202
203	#endif /* MODULE */