--- /dev/null
+/* 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_change_mtu = eth_change_mtu,
+ .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 */
Code Review / kvmfornfv.git / blobdiff