350 lines
10 KiB
C
350 lines
10 KiB
C
/*
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ne3210.c
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Linux driver for Novell NE3210 EISA Network Adapter
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Copyright (C) 1998, Paul Gortmaker.
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This software may be used and distributed according to the terms
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of the GNU General Public License, incorporated herein by reference.
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Information and Code Sources:
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1) Based upon my other EISA 8390 drivers (lne390, es3210, smc-ultra32)
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2) The existing myriad of other Linux 8390 drivers by Donald Becker.
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3) Info for getting IRQ and sh-mem gleaned from the EISA cfg file
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The NE3210 is an EISA shared memory NS8390 implementation. Shared
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memory address > 1MB should work with this driver.
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Note that the .cfg file (3/11/93, v1.0) has AUI and BNC switched
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around (or perhaps there are some defective/backwards cards ???)
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This driver WILL NOT WORK FOR THE NE3200 - it is completely different
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and does not use an 8390 at all.
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Updated to EISA probing API 5/2003 by Marc Zyngier.
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*/
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#include <linux/module.h>
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#include <linux/eisa.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/mm.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include "8390.h"
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#define DRV_NAME "ne3210"
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static void ne3210_reset_8390(struct net_device *dev);
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static void ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
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static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
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static void ne3210_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page);
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#define NE3210_START_PG 0x00 /* First page of TX buffer */
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#define NE3210_STOP_PG 0x80 /* Last page +1 of RX ring */
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#define NE3210_IO_EXTENT 0x20
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#define NE3210_SA_PROM 0x16 /* Start of e'net addr. */
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#define NE3210_RESET_PORT 0xc84
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#define NE3210_NIC_OFFSET 0x00 /* Hello, the 8390 is *here* */
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#define NE3210_ADDR0 0x00 /* 3 byte vendor prefix */
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#define NE3210_ADDR1 0x00
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#define NE3210_ADDR2 0x1b
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#define NE3210_CFG1 0xc84 /* NB: 0xc84 is also "reset" port. */
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#define NE3210_CFG2 0xc90
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#define NE3210_CFG_EXTENT (NE3210_CFG2 - NE3210_CFG1 + 1)
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/*
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* You can OR any of the following bits together and assign it
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* to NE3210_DEBUG to get verbose driver info during operation.
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* Currently only the probe one is implemented.
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*/
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#define NE3210_D_PROBE 0x01
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#define NE3210_D_RX_PKT 0x02
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#define NE3210_D_TX_PKT 0x04
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#define NE3210_D_IRQ 0x08
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#define NE3210_DEBUG 0x0
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static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
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static unsigned int shmem_map[] __initdata = {0xff0, 0xfe0, 0xfff0, 0xd8, 0xffe0, 0xffc0, 0xd0, 0x0};
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static const char *ifmap[] __initdata = {"UTP", "?", "BNC", "AUI"};
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static int ifmap_val[] __initdata = {
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IF_PORT_10BASET,
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IF_PORT_UNKNOWN,
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IF_PORT_10BASE2,
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IF_PORT_AUI,
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};
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static int __init ne3210_eisa_probe (struct device *device)
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{
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unsigned long ioaddr, phys_mem;
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int i, retval, port_index;
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struct eisa_device *edev = to_eisa_device (device);
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struct net_device *dev;
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/* Allocate dev->priv and fill in 8390 specific dev fields. */
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if (!(dev = alloc_ei_netdev ())) {
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printk ("ne3210.c: unable to allocate memory for dev!\n");
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return -ENOMEM;
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}
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SET_NETDEV_DEV(dev, device);
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dev_set_drvdata(device, dev);
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ioaddr = edev->base_addr;
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if (!request_region(ioaddr, NE3210_IO_EXTENT, DRV_NAME)) {
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retval = -EBUSY;
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goto out;
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}
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if (!request_region(ioaddr + NE3210_CFG1,
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NE3210_CFG_EXTENT, DRV_NAME)) {
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retval = -EBUSY;
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goto out1;
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}
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#if NE3210_DEBUG & NE3210_D_PROBE
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printk("ne3210-debug: probe at %#x, ID %s\n", ioaddr, edev->id.sig);
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printk("ne3210-debug: config regs: %#x %#x\n",
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inb(ioaddr + NE3210_CFG1), inb(ioaddr + NE3210_CFG2));
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#endif
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port_index = inb(ioaddr + NE3210_CFG2) >> 6;
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for(i = 0; i < ETHER_ADDR_LEN; i++)
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dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i);
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printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr: %pM.\n",
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edev->slot, ifmap[port_index], dev->dev_addr);
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/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
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dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07];
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printk("ne3210.c: using IRQ %d, ", dev->irq);
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retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
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if (retval) {
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printk (" unable to get IRQ %d.\n", dev->irq);
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goto out2;
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}
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phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000;
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/*
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BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
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the card mem within the region covered by `normal' RAM !!!
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*/
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if (phys_mem > 1024*1024) { /* phys addr > 1MB */
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if (phys_mem < virt_to_phys(high_memory)) {
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printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n");
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printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n");
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printk(KERN_CRIT "ne3210.c: or to an address above 0x%llx.\n",
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(u64)virt_to_phys(high_memory));
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printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n");
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retval = -EINVAL;
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goto out3;
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}
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}
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if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) {
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printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n",
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phys_mem);
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goto out3;
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}
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printk("%dkB memory at physical address %#lx\n",
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NE3210_STOP_PG/4, phys_mem);
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ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100);
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if (!ei_status.mem) {
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printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n");
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printk(KERN_ERR "ne3210.c: Driver NOT installed.\n");
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retval = -EAGAIN;
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goto out4;
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}
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printk("ne3210.c: remapped %dkB card memory to virtual address %p\n",
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NE3210_STOP_PG/4, ei_status.mem);
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dev->mem_start = (unsigned long)ei_status.mem;
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dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256;
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/* The 8390 offset is zero for the NE3210 */
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dev->base_addr = ioaddr;
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ei_status.name = "NE3210";
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ei_status.tx_start_page = NE3210_START_PG;
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ei_status.rx_start_page = NE3210_START_PG + TX_PAGES;
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ei_status.stop_page = NE3210_STOP_PG;
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ei_status.word16 = 1;
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ei_status.priv = phys_mem;
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if (ei_debug > 0)
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printk("ne3210 loaded.\n");
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ei_status.reset_8390 = &ne3210_reset_8390;
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ei_status.block_input = &ne3210_block_input;
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ei_status.block_output = &ne3210_block_output;
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ei_status.get_8390_hdr = &ne3210_get_8390_hdr;
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dev->netdev_ops = &ei_netdev_ops;
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dev->if_port = ifmap_val[port_index];
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if ((retval = register_netdev (dev)))
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goto out5;
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NS8390_init(dev, 0);
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return 0;
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out5:
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iounmap(ei_status.mem);
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out4:
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release_mem_region (phys_mem, NE3210_STOP_PG*0x100);
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out3:
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free_irq (dev->irq, dev);
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out2:
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release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
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out1:
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release_region (ioaddr, NE3210_IO_EXTENT);
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out:
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free_netdev (dev);
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return retval;
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}
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static int __devexit ne3210_eisa_remove (struct device *device)
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{
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struct net_device *dev = dev_get_drvdata(device);
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unsigned long ioaddr = to_eisa_device (device)->base_addr;
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unregister_netdev (dev);
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iounmap(ei_status.mem);
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release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100);
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free_irq (dev->irq, dev);
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release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT);
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release_region (ioaddr, NE3210_IO_EXTENT);
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free_netdev (dev);
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return 0;
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}
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/*
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* Reset by toggling the "Board Enable" bits (bit 2 and 0).
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*/
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static void ne3210_reset_8390(struct net_device *dev)
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{
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unsigned short ioaddr = dev->base_addr;
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outb(0x04, ioaddr + NE3210_RESET_PORT);
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if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name);
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mdelay(2);
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ei_status.txing = 0;
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outb(0x01, ioaddr + NE3210_RESET_PORT);
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if (ei_debug > 1) printk("reset done\n");
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return;
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}
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/*
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* Note: In the following three functions is the implicit assumption
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* that the associated memcpy will only use "rep; movsl" as long as
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* we keep the counts as some multiple of doublewords. This is a
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* requirement of the hardware, and also prevents us from using
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* eth_io_copy_and_sum() since we can't guarantee it will limit
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* itself to doubleword access.
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*/
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/*
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* Grab the 8390 specific header. Similar to the block_input routine, but
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* we don't need to be concerned with ring wrap as the header will be at
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* the start of a page, so we optimize accordingly. (A single doubleword.)
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*/
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static void
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ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
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{
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void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_START_PG)<<8);
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memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
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hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
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}
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/*
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* Block input and output are easy on shared memory ethercards, the only
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* complication is when the ring buffer wraps. The count will already
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* be rounded up to a doubleword value via ne3210_get_8390_hdr() above.
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*/
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static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb,
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int ring_offset)
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{
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void __iomem *start = ei_status.mem + ring_offset - NE3210_START_PG*256;
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if (ring_offset + count > NE3210_STOP_PG*256) {
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/* Packet wraps over end of ring buffer. */
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int semi_count = NE3210_STOP_PG*256 - ring_offset;
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memcpy_fromio(skb->data, start, semi_count);
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count -= semi_count;
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memcpy_fromio(skb->data + semi_count,
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ei_status.mem + TX_PAGES*256, count);
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} else {
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/* Packet is in one chunk. */
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memcpy_fromio(skb->data, start, count);
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}
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}
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static void ne3210_block_output(struct net_device *dev, int count,
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const unsigned char *buf, int start_page)
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{
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void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8);
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count = (count + 3) & ~3; /* Round up to doubleword */
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memcpy_toio(shmem, buf, count);
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}
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static struct eisa_device_id ne3210_ids[] = {
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{ "EGL0101" },
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{ "NVL1801" },
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{ "" },
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};
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MODULE_DEVICE_TABLE(eisa, ne3210_ids);
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static struct eisa_driver ne3210_eisa_driver = {
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.id_table = ne3210_ids,
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.driver = {
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.name = "ne3210",
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.probe = ne3210_eisa_probe,
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.remove = __devexit_p (ne3210_eisa_remove),
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},
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};
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MODULE_DESCRIPTION("NE3210 EISA Ethernet driver");
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MODULE_LICENSE("GPL");
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MODULE_DEVICE_TABLE(eisa, ne3210_ids);
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static int ne3210_init(void)
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{
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return eisa_driver_register (&ne3210_eisa_driver);
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}
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static void ne3210_cleanup(void)
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{
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eisa_driver_unregister (&ne3210_eisa_driver);
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}
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module_init (ne3210_init);
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module_exit (ne3210_cleanup);
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