From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/net/mvme147.c | 203 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 203 insertions(+) create mode 100644 drivers/net/mvme147.c (limited to 'drivers/net/mvme147.c') diff --git a/drivers/net/mvme147.c b/drivers/net/mvme147.c new file mode 100644 index 000000000000..56a82d8ee8f5 --- /dev/null +++ b/drivers/net/mvme147.c @@ -0,0 +1,203 @@ +/* mvme147.c : the Linux/mvme147/lance ethernet driver + * + * Copyright (C) 05/1998 Peter Maydell + * Based on the Sun Lance driver and the NetBSD HP Lance driver + * Uses the generic 7990.c LANCE code. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +/* Used for the temporal inet entries and routing */ +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +/* 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 */ -- cgit v1.2.3-59-g8ed1b