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0f734484ac
Some network drivers do not check whether they're actually running on the correct platform, causing multi-platform kernels to crash if they are not. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
643 lines
17 KiB
C
643 lines
17 KiB
C
/*
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* Amiga Linux/68k 8390 based PCMCIA Ethernet Driver for the Amiga 1200
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*
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* (C) Copyright 1997 Alain Malek
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* (Alain.Malek@cryogen.com)
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*
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* ----------------------------------------------------------------------------
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*
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* This program is based on
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*
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* ne.c: A general non-shared-memory NS8390 ethernet driver for linux
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* Written 1992-94 by Donald Becker.
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*
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* 8390.c: A general NS8390 ethernet driver core for linux.
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* Written 1992-94 by Donald Becker.
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*
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* cnetdevice: A Sana-II ethernet driver for AmigaOS
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* Written by Bruce Abbott (bhabbott@inhb.co.nz)
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*
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* ----------------------------------------------------------------------------
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of the Linux
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* distribution for more details.
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*
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* ----------------------------------------------------------------------------
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/jiffies.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/setup.h>
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#include <asm/amigaints.h>
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#include <asm/amigahw.h>
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#include <asm/amigayle.h>
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#include <asm/amipcmcia.h>
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#include "8390.h"
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/* ---- No user-serviceable parts below ---- */
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#define DRV_NAME "apne"
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#define NE_BASE (dev->base_addr)
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#define NE_CMD 0x00
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#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
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#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */
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#define NE_IO_EXTENT 0x20
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#define NE_EN0_ISR 0x07
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#define NE_EN0_DCFG 0x0e
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#define NE_EN0_RSARLO 0x08
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#define NE_EN0_RSARHI 0x09
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#define NE_EN0_RCNTLO 0x0a
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#define NE_EN0_RXCR 0x0c
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#define NE_EN0_TXCR 0x0d
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#define NE_EN0_RCNTHI 0x0b
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#define NE_EN0_IMR 0x0f
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#define NE1SM_START_PG 0x20 /* First page of TX buffer */
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#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
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#define NESM_START_PG 0x40 /* First page of TX buffer */
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#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
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struct net_device * __init apne_probe(int unit);
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static int apne_probe1(struct net_device *dev, int ioaddr);
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static int apne_open(struct net_device *dev);
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static int apne_close(struct net_device *dev);
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static void apne_reset_8390(struct net_device *dev);
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static void apne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
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int ring_page);
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static void apne_block_input(struct net_device *dev, int count,
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struct sk_buff *skb, int ring_offset);
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static void apne_block_output(struct net_device *dev, const int count,
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const unsigned char *buf, const int start_page);
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static irqreturn_t apne_interrupt(int irq, void *dev_id);
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static int init_pcmcia(void);
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/* IO base address used for nic */
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#define IOBASE 0x300
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/*
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use MANUAL_CONFIG and MANUAL_OFFSET for enabling IO by hand
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you can find the values to use by looking at the cnet.device
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config file example (the default values are for the CNET40BC card)
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*/
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/*
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#define MANUAL_CONFIG 0x20
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#define MANUAL_OFFSET 0x3f8
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#define MANUAL_HWADDR0 0x00
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#define MANUAL_HWADDR1 0x12
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#define MANUAL_HWADDR2 0x34
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#define MANUAL_HWADDR3 0x56
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#define MANUAL_HWADDR4 0x78
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#define MANUAL_HWADDR5 0x9a
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*/
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static const char version[] =
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"apne.c:v1.1 7/10/98 Alain Malek (Alain.Malek@cryogen.ch)\n";
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static int apne_owned; /* signal if card already owned */
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struct net_device * __init apne_probe(int unit)
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{
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struct net_device *dev;
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#ifndef MANUAL_CONFIG
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char tuple[8];
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#endif
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int err;
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if (!MACH_IS_AMIGA)
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return ERR_PTR(-ENODEV);
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if (apne_owned)
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return ERR_PTR(-ENODEV);
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if ( !(AMIGAHW_PRESENT(PCMCIA)) )
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return ERR_PTR(-ENODEV);
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printk("Looking for PCMCIA ethernet card : ");
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/* check if a card is inserted */
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if (!(PCMCIA_INSERTED)) {
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printk("NO PCMCIA card inserted\n");
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return ERR_PTR(-ENODEV);
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}
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dev = alloc_ei_netdev();
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if (!dev)
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return ERR_PTR(-ENOMEM);
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if (unit >= 0) {
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sprintf(dev->name, "eth%d", unit);
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netdev_boot_setup_check(dev);
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}
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/* disable pcmcia irq for readtuple */
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pcmcia_disable_irq();
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#ifndef MANUAL_CONFIG
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if ((pcmcia_copy_tuple(CISTPL_FUNCID, tuple, 8) < 3) ||
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(tuple[2] != CISTPL_FUNCID_NETWORK)) {
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printk("not an ethernet card\n");
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/* XXX: shouldn't we re-enable irq here? */
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free_netdev(dev);
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return ERR_PTR(-ENODEV);
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}
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#endif
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printk("ethernet PCMCIA card inserted\n");
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if (!init_pcmcia()) {
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/* XXX: shouldn't we re-enable irq here? */
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free_netdev(dev);
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return ERR_PTR(-ENODEV);
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}
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if (!request_region(IOBASE, 0x20, DRV_NAME)) {
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free_netdev(dev);
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return ERR_PTR(-EBUSY);
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}
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err = apne_probe1(dev, IOBASE);
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if (err) {
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release_region(IOBASE, 0x20);
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free_netdev(dev);
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return ERR_PTR(err);
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}
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err = register_netdev(dev);
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if (!err)
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return dev;
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pcmcia_disable_irq();
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free_irq(IRQ_AMIGA_PORTS, dev);
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pcmcia_reset();
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release_region(IOBASE, 0x20);
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free_netdev(dev);
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return ERR_PTR(err);
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}
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static int __init apne_probe1(struct net_device *dev, int ioaddr)
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{
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int i;
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unsigned char SA_prom[32];
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int wordlength = 2;
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const char *name = NULL;
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int start_page, stop_page;
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#ifndef MANUAL_HWADDR0
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int neX000, ctron;
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#endif
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static unsigned version_printed;
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DECLARE_MAC_BUF(mac);
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if (ei_debug && version_printed++ == 0)
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printk(version);
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printk("PCMCIA NE*000 ethercard probe");
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/* Reset card. Who knows what dain-bramaged state it was left in. */
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{ unsigned long reset_start_time = jiffies;
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outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);
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while ((inb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
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if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
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printk(" not found (no reset ack).\n");
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return -ENODEV;
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}
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outb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */
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}
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#ifndef MANUAL_HWADDR0
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/* Read the 16 bytes of station address PROM.
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We must first initialize registers, similar to NS8390_init(eifdev, 0).
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We can't reliably read the SAPROM address without this.
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(I learned the hard way!). */
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{
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struct {unsigned long value, offset; } program_seq[] = {
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{E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
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{0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */
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{0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */
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{0x00, NE_EN0_RCNTHI},
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{0x00, NE_EN0_IMR}, /* Mask completion irq. */
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{0xFF, NE_EN0_ISR},
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{E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */
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{E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode. */
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{32, NE_EN0_RCNTLO},
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{0x00, NE_EN0_RCNTHI},
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{0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */
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{0x00, NE_EN0_RSARHI},
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{E8390_RREAD+E8390_START, NE_CMD},
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};
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for (i = 0; i < ARRAY_SIZE(program_seq); i++) {
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outb(program_seq[i].value, ioaddr + program_seq[i].offset);
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}
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}
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for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
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SA_prom[i] = inb(ioaddr + NE_DATAPORT);
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SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
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if (SA_prom[i] != SA_prom[i+1])
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wordlength = 1;
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}
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/* At this point, wordlength *only* tells us if the SA_prom is doubled
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up or not because some broken PCI cards don't respect the byte-wide
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request in program_seq above, and hence don't have doubled up values.
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These broken cards would otherwise be detected as an ne1000. */
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if (wordlength == 2)
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for (i = 0; i < 16; i++)
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SA_prom[i] = SA_prom[i+i];
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if (wordlength == 2) {
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/* We must set the 8390 for word mode. */
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outb(0x49, ioaddr + NE_EN0_DCFG);
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start_page = NESM_START_PG;
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stop_page = NESM_STOP_PG;
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} else {
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start_page = NE1SM_START_PG;
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stop_page = NE1SM_STOP_PG;
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}
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neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
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ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
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/* Set up the rest of the parameters. */
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if (neX000) {
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name = (wordlength == 2) ? "NE2000" : "NE1000";
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} else if (ctron) {
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name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
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start_page = 0x01;
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stop_page = (wordlength == 2) ? 0x40 : 0x20;
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} else {
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printk(" not found.\n");
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return -ENXIO;
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}
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#else
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wordlength = 2;
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/* We must set the 8390 for word mode. */
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outb(0x49, ioaddr + NE_EN0_DCFG);
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start_page = NESM_START_PG;
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stop_page = NESM_STOP_PG;
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SA_prom[0] = MANUAL_HWADDR0;
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SA_prom[1] = MANUAL_HWADDR1;
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SA_prom[2] = MANUAL_HWADDR2;
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SA_prom[3] = MANUAL_HWADDR3;
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SA_prom[4] = MANUAL_HWADDR4;
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SA_prom[5] = MANUAL_HWADDR5;
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name = "NE2000";
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#endif
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dev->base_addr = ioaddr;
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dev->irq = IRQ_AMIGA_PORTS;
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/* Install the Interrupt handler */
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i = request_irq(dev->irq, apne_interrupt, IRQF_SHARED, DRV_NAME, dev);
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if (i) return i;
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for(i = 0; i < ETHER_ADDR_LEN; i++)
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dev->dev_addr[i] = SA_prom[i];
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printk(" %s\n", print_mac(mac, dev->dev_addr));
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printk("%s: %s found.\n", dev->name, name);
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ei_status.name = name;
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ei_status.tx_start_page = start_page;
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ei_status.stop_page = stop_page;
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ei_status.word16 = (wordlength == 2);
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ei_status.rx_start_page = start_page + TX_PAGES;
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ei_status.reset_8390 = &apne_reset_8390;
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ei_status.block_input = &apne_block_input;
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ei_status.block_output = &apne_block_output;
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ei_status.get_8390_hdr = &apne_get_8390_hdr;
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dev->open = &apne_open;
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dev->stop = &apne_close;
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#ifdef CONFIG_NET_POLL_CONTROLLER
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dev->poll_controller = ei_poll;
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#endif
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NS8390_init(dev, 0);
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pcmcia_ack_int(pcmcia_get_intreq()); /* ack PCMCIA int req */
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pcmcia_enable_irq();
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apne_owned = 1;
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return 0;
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}
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static int
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apne_open(struct net_device *dev)
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{
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ei_open(dev);
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return 0;
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}
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static int
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apne_close(struct net_device *dev)
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{
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if (ei_debug > 1)
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printk("%s: Shutting down ethercard.\n", dev->name);
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ei_close(dev);
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return 0;
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}
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/* Hard reset the card. This used to pause for the same period that a
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8390 reset command required, but that shouldn't be necessary. */
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static void
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apne_reset_8390(struct net_device *dev)
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{
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unsigned long reset_start_time = jiffies;
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init_pcmcia();
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if (ei_debug > 1) printk("resetting the 8390 t=%ld...", jiffies);
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outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
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ei_status.txing = 0;
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ei_status.dmaing = 0;
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/* This check _should_not_ be necessary, omit eventually. */
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while ((inb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
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if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
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printk("%s: ne_reset_8390() did not complete.\n", dev->name);
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break;
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}
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outb(ENISR_RESET, NE_BASE + NE_EN0_ISR); /* Ack intr. */
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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. */
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static void
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apne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
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{
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int nic_base = dev->base_addr;
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int cnt;
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char *ptrc;
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short *ptrs;
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/* This *shouldn't* happen. If it does, it's the last thing you'll see */
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if (ei_status.dmaing) {
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printk("%s: DMAing conflict in ne_get_8390_hdr "
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"[DMAstat:%d][irqlock:%d][intr:%d].\n",
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dev->name, ei_status.dmaing, ei_status.irqlock, dev->irq);
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return;
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}
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ei_status.dmaing |= 0x01;
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outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
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outb(ENISR_RDC, nic_base + NE_EN0_ISR);
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outb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
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outb(0, nic_base + NE_EN0_RCNTHI);
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outb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
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outb(ring_page, nic_base + NE_EN0_RSARHI);
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outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
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if (ei_status.word16) {
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ptrs = (short*)hdr;
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for(cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
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*ptrs++ = inw(NE_BASE + NE_DATAPORT);
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} else {
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ptrc = (char*)hdr;
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for(cnt = 0; cnt < sizeof(struct e8390_pkt_hdr); cnt++)
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*ptrc++ = inb(NE_BASE + NE_DATAPORT);
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}
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outb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
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ei_status.dmaing &= ~0x01;
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le16_to_cpus(&hdr->count);
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}
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/* Block input and output, similar to the Crynwr packet driver. If you
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are porting to a new ethercard, look at the packet driver source for hints.
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The NEx000 doesn't share the on-board packet memory -- you have to put
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the packet out through the "remote DMA" dataport using outb. */
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static void
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apne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
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{
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int nic_base = dev->base_addr;
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char *buf = skb->data;
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char *ptrc;
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short *ptrs;
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int cnt;
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/* This *shouldn't* happen. If it does, it's the last thing you'll see */
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if (ei_status.dmaing) {
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printk("%s: DMAing conflict in ne_block_input "
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"[DMAstat:%d][irqlock:%d][intr:%d].\n",
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dev->name, ei_status.dmaing, ei_status.irqlock, dev->irq);
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return;
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}
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ei_status.dmaing |= 0x01;
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outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
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outb(ENISR_RDC, nic_base + NE_EN0_ISR);
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outb(count & 0xff, nic_base + NE_EN0_RCNTLO);
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outb(count >> 8, nic_base + NE_EN0_RCNTHI);
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outb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
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outb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
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|
outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
|
|
if (ei_status.word16) {
|
|
ptrs = (short*)buf;
|
|
for (cnt = 0; cnt < (count>>1); cnt++)
|
|
*ptrs++ = inw(NE_BASE + NE_DATAPORT);
|
|
if (count & 0x01) {
|
|
buf[count-1] = inb(NE_BASE + NE_DATAPORT);
|
|
}
|
|
} else {
|
|
ptrc = (char*)buf;
|
|
for (cnt = 0; cnt < count; cnt++)
|
|
*ptrc++ = inb(NE_BASE + NE_DATAPORT);
|
|
}
|
|
|
|
outb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
}
|
|
|
|
static void
|
|
apne_block_output(struct net_device *dev, int count,
|
|
const unsigned char *buf, const int start_page)
|
|
{
|
|
int nic_base = NE_BASE;
|
|
unsigned long dma_start;
|
|
char *ptrc;
|
|
short *ptrs;
|
|
int cnt;
|
|
|
|
/* Round the count up for word writes. Do we need to do this?
|
|
What effect will an odd byte count have on the 8390?
|
|
I should check someday. */
|
|
if (ei_status.word16 && (count & 0x01))
|
|
count++;
|
|
|
|
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
|
|
if (ei_status.dmaing) {
|
|
printk("%s: DMAing conflict in ne_block_output."
|
|
"[DMAstat:%d][irqlock:%d][intr:%d]\n",
|
|
dev->name, ei_status.dmaing, ei_status.irqlock, dev->irq);
|
|
return;
|
|
}
|
|
ei_status.dmaing |= 0x01;
|
|
/* We should already be in page 0, but to be safe... */
|
|
outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
|
|
|
|
outb(ENISR_RDC, nic_base + NE_EN0_ISR);
|
|
|
|
/* Now the normal output. */
|
|
outb(count & 0xff, nic_base + NE_EN0_RCNTLO);
|
|
outb(count >> 8, nic_base + NE_EN0_RCNTHI);
|
|
outb(0x00, nic_base + NE_EN0_RSARLO);
|
|
outb(start_page, nic_base + NE_EN0_RSARHI);
|
|
|
|
outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
|
|
if (ei_status.word16) {
|
|
ptrs = (short*)buf;
|
|
for (cnt = 0; cnt < count>>1; cnt++)
|
|
outw(*ptrs++, NE_BASE+NE_DATAPORT);
|
|
} else {
|
|
ptrc = (char*)buf;
|
|
for (cnt = 0; cnt < count; cnt++)
|
|
outb(*ptrc++, NE_BASE + NE_DATAPORT);
|
|
}
|
|
|
|
dma_start = jiffies;
|
|
|
|
while ((inb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
|
|
if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */
|
|
printk("%s: timeout waiting for Tx RDC.\n", dev->name);
|
|
apne_reset_8390(dev);
|
|
NS8390_init(dev,1);
|
|
break;
|
|
}
|
|
|
|
outb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
|
|
ei_status.dmaing &= ~0x01;
|
|
return;
|
|
}
|
|
|
|
static irqreturn_t apne_interrupt(int irq, void *dev_id)
|
|
{
|
|
unsigned char pcmcia_intreq;
|
|
|
|
if (!(gayle.inten & GAYLE_IRQ_IRQ))
|
|
return IRQ_NONE;
|
|
|
|
pcmcia_intreq = pcmcia_get_intreq();
|
|
|
|
if (!(pcmcia_intreq & GAYLE_IRQ_IRQ)) {
|
|
pcmcia_ack_int(pcmcia_intreq);
|
|
return IRQ_NONE;
|
|
}
|
|
if (ei_debug > 3)
|
|
printk("pcmcia intreq = %x\n", pcmcia_intreq);
|
|
pcmcia_disable_irq(); /* to get rid of the sti() within ei_interrupt */
|
|
ei_interrupt(irq, dev_id);
|
|
pcmcia_ack_int(pcmcia_get_intreq());
|
|
pcmcia_enable_irq();
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#ifdef MODULE
|
|
static struct net_device *apne_dev;
|
|
|
|
static int __init apne_module_init(void)
|
|
{
|
|
apne_dev = apne_probe(-1);
|
|
if (IS_ERR(apne_dev))
|
|
return PTR_ERR(apne_dev);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit apne_module_exit(void)
|
|
{
|
|
unregister_netdev(apne_dev);
|
|
|
|
pcmcia_disable_irq();
|
|
|
|
free_irq(IRQ_AMIGA_PORTS, apne_dev);
|
|
|
|
pcmcia_reset();
|
|
|
|
release_region(IOBASE, 0x20);
|
|
|
|
free_netdev(apne_dev);
|
|
}
|
|
module_init(apne_module_init);
|
|
module_exit(apne_module_exit);
|
|
#endif
|
|
|
|
static int init_pcmcia(void)
|
|
{
|
|
u_char config;
|
|
#ifndef MANUAL_CONFIG
|
|
u_char tuple[32];
|
|
int offset_len;
|
|
#endif
|
|
u_long offset;
|
|
|
|
pcmcia_reset();
|
|
pcmcia_program_voltage(PCMCIA_0V);
|
|
pcmcia_access_speed(PCMCIA_SPEED_250NS);
|
|
pcmcia_write_enable();
|
|
|
|
#ifdef MANUAL_CONFIG
|
|
config = MANUAL_CONFIG;
|
|
#else
|
|
/* get and write config byte to enable IO port */
|
|
|
|
if (pcmcia_copy_tuple(CISTPL_CFTABLE_ENTRY, tuple, 32) < 3)
|
|
return 0;
|
|
|
|
config = tuple[2] & 0x3f;
|
|
#endif
|
|
#ifdef MANUAL_OFFSET
|
|
offset = MANUAL_OFFSET;
|
|
#else
|
|
if (pcmcia_copy_tuple(CISTPL_CONFIG, tuple, 32) < 6)
|
|
return 0;
|
|
|
|
offset_len = (tuple[2] & 0x3) + 1;
|
|
offset = 0;
|
|
while(offset_len--) {
|
|
offset = (offset << 8) | tuple[4+offset_len];
|
|
}
|
|
#endif
|
|
|
|
out_8(GAYLE_ATTRIBUTE+offset, config);
|
|
|
|
return 1;
|
|
}
|
|
|
|
MODULE_LICENSE("GPL");
|