patch-2.2.18 linux/drivers/net/mvme147.c

• Lines: 210
• Date: Sat Oct 14 00:02:32 2000
• Orig file: v2.2.17/drivers/net/mvme147.c
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/net/mvme147.c linux/drivers/net/mvme147.c
@@ -0,0 +1,209 @@
+/* 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/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/malloc.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+
+/* Used for the temporal inet entries and routing */
+#include <linux/socket.h>
+#include <linux/route.h>
+
+#include <linux/dio.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.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;
+	void *base;
+	void *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...
+ */
+int mvme147lance_probe(struct device *dev);
+static int m147lance_open(struct device *dev);
+static int m147lance_close(struct device *dev);
+static void m147lance_writerap(struct m147lance_private *lp, unsigned short value);
+static void m147lance_writerdp(struct m147lance_private *lp, unsigned short value);
+static unsigned short m147lance_readrdp(struct m147lance_private *lp);
+
+typedef void (*writerap_t)(void *, unsigned short);
+typedef void (*writerdp_t)(void *, unsigned short);
+typedef void (*readrdp_t)(void *);
+
+#ifdef MODULE
+static struct m147lance_private *root_m147lance_dev = NULL;
+#endif
+
+/* Initialise the one and only on-board 7990 */
+__initfunc(int mvme147lance_probe(struct device *dev))
+{
+	static int called = 0;
+	static const char name[] = "MVME147 LANCE";
+	struct m147lance_private *lp;
+	u_long *addr;
+	u_long address;
+
+	if (!MACH_IS_MVME147 || called)
+		return(ENODEV);
+	called++;
+
+	dev->priv = kmalloc(sizeof(struct m147lance_private), GFP_KERNEL);
+	if (dev->priv == NULL)
+		return -ENOMEM;
+	memset(dev->priv, 0, sizeof(struct m147lance_private));
+
+	/* 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->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 = (void *)__get_dma_pages(GFP_ATOMIC, 3);	/* 16K */
+	if (!lp->ram)
+	{
+		printk("%s: No memory for LANCE buffers\n", dev->name);
+		return -ENODEV;
+	}
+
+	lp->lance.name = (char*)name;                   /* discards const, shut up gcc */
+	lp->lance.ll = (struct lance_regs *)(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;
+	ether_setup(dev);
+
+#ifdef MODULE
+	dev->ifindex = dev_new_index();
+	lp->next_module = root_m147lance_dev;
+	root_m147lance_dev = lp;
+#endif /* MODULE */
+
+	return 0;
+}
+
+static void m147lance_writerap(struct m147lance_private *lp, unsigned short value)
+{
+	lp->lance.ll->rap = value;
+}
+
+static void m147lance_writerdp(struct m147lance_private *lp, unsigned short value)
+{
+	lp->lance.ll->rdp = value;
+}
+
+static unsigned short m147lance_readrdp(struct m147lance_private *lp)
+{
+	return lp->lance.ll->rdp;
+}
+
+static int m147lance_open(struct 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 */
+
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static int m147lance_close(struct device *dev)
+{
+	/* disable interrupts at boardlevel */
+	m147_pcc->lan_cntrl=0x0; /* disable interrupts */
+	lance_close(dev);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+#ifdef MODULE
+int init_module(void)
+{
+	root_lance_dev = NULL;
+	return mvme147lance_probe(NULL);
+}
+
+void cleanup_module(void)
+{
+	/* Walk the chain of devices, unregistering them */
+	struct m147lance_private *lp;
+	while (root_m147lance_dev) {
+		lp = root_m147lance_dev->next_module;
+		unregister_netdev(root_lance_dev->dev);
+		free_pages(lp->ram, 3);
+		kfree(root_lance_dev->dev);
+		root_lance_dev = lp;
+	}
+}
+
+#endif /* MODULE */