+++ /dev/null
-// SPDX-License-Identifier: GPL-1.0+
-/* smc-ultra.c: A SMC Ultra ethernet driver for linux. */
-/*
- This is a driver for the SMC Ultra and SMC EtherEZ ISA ethercards.
-
- Written 1993-1998 by Donald Becker.
-
- Copyright 1993 United States Government as represented by the
- Director, National Security Agency.
-
- The author may be reached as becker@scyld.com, or C/O
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
-
- This driver uses the cards in the 8390-compatible mode.
- Most of the run-time complexity is handled by the generic code in
- 8390.c. The code in this file is responsible for
-
- ultra_probe() Detecting and initializing the card.
- ultra_probe1()
- ultra_probe_isapnp()
-
- ultra_open() The card-specific details of starting, stopping
- ultra_reset_8390() and resetting the 8390 NIC core.
- ultra_close()
-
- ultra_block_input() Routines for reading and writing blocks of
- ultra_block_output() packet buffer memory.
- ultra_pio_input()
- ultra_pio_output()
-
- This driver enables the shared memory only when doing the actual data
- transfers to avoid a bug in early version of the card that corrupted
- data transferred by a AHA1542.
-
- This driver now supports the programmed-I/O (PIO) data transfer mode of
- the EtherEZ. It does not use the non-8390-compatible "Altego" mode.
- That support (if available) is in smc-ez.c.
-
- Changelog:
-
- Paul Gortmaker : multiple card support for module users.
- Donald Becker : 4/17/96 PIO support, minor potential problems avoided.
- Donald Becker : 6/6/96 correctly set auto-wrap bit.
- Alexander Sotirov : 1/20/01 Added support for ISAPnP cards
-
- Note about the ISA PnP support:
-
- This driver can not autoprobe for more than one SMC EtherEZ PnP card.
- You have to configure the second card manually through the /proc/isapnp
- interface and then load the module with an explicit io=0x___ option.
-*/
-
-static const char version[] =
- "smc-ultra.c:v2.02 2/3/98 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/isapnp.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <net/Space.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-
-#include "8390.h"
-
-#define DRV_NAME "smc-ultra"
-
-/* A zero-terminated list of I/O addresses to be probed. */
-static unsigned int ultra_portlist[] __initdata =
-{0x200, 0x220, 0x240, 0x280, 0x300, 0x340, 0x380, 0};
-
-static int ultra_probe1(struct net_device *dev, int ioaddr);
-
-#ifdef __ISAPNP__
-static int ultra_probe_isapnp(struct net_device *dev);
-#endif
-
-static int ultra_open(struct net_device *dev);
-static void ultra_reset_8390(struct net_device *dev);
-static void ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
- int ring_page);
-static void ultra_block_input(struct net_device *dev, int count,
- struct sk_buff *skb, int ring_offset);
-static void ultra_block_output(struct net_device *dev, int count,
- const unsigned char *buf, const int start_page);
-static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
- int ring_page);
-static void ultra_pio_input(struct net_device *dev, int count,
- struct sk_buff *skb, int ring_offset);
-static void ultra_pio_output(struct net_device *dev, int count,
- const unsigned char *buf, const int start_page);
-static int ultra_close_card(struct net_device *dev);
-
-#ifdef __ISAPNP__
-static struct isapnp_device_id ultra_device_ids[] __initdata = {
- { ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
- ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
- (long) "SMC EtherEZ (8416)" },
- { } /* terminate list */
-};
-
-MODULE_DEVICE_TABLE(isapnp, ultra_device_ids);
-#endif
-
-static u32 ultra_msg_enable;
-
-#define START_PG 0x00 /* First page of TX buffer */
-
-#define ULTRA_CMDREG 0 /* Offset to ASIC command register. */
-#define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */
-#define ULTRA_MEMENB 0x40 /* Enable the shared memory. */
-#define IOPD 0x02 /* I/O Pipe Data (16 bits), PIO operation. */
-#define IOPA 0x07 /* I/O Pipe Address for PIO operation. */
-#define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
-#define ULTRA_IO_EXTENT 32
-#define EN0_ERWCNT 0x08 /* Early receive warning count. */
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void ultra_poll(struct net_device *dev)
-{
- disable_irq(dev->irq);
- ei_interrupt(dev->irq, dev);
- enable_irq(dev->irq);
-}
-#endif
-/* Probe for the Ultra. This looks like a 8013 with the station
- address PROM at I/O ports <base>+8 to <base>+13, with a checksum
- following.
-*/
-
-static int __init do_ultra_probe(struct net_device *dev)
-{
- int i;
- int base_addr = dev->base_addr;
- int irq = dev->irq;
-
- if (base_addr > 0x1ff) /* Check a single specified location. */
- return ultra_probe1(dev, base_addr);
- else if (base_addr != 0) /* Don't probe at all. */
- return -ENXIO;
-
-#ifdef __ISAPNP__
- /* Look for any installed ISAPnP cards */
- if (isapnp_present() && (ultra_probe_isapnp(dev) == 0))
- return 0;
-#endif
-
- for (i = 0; ultra_portlist[i]; i++) {
- dev->irq = irq;
- if (ultra_probe1(dev, ultra_portlist[i]) == 0)
- return 0;
- }
-
- return -ENODEV;
-}
-
-#ifndef MODULE
-struct net_device * __init ultra_probe(int unit)
-{
- struct net_device *dev = alloc_ei_netdev();
- int err;
-
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- sprintf(dev->name, "eth%d", unit);
- netdev_boot_setup_check(dev);
-
- err = do_ultra_probe(dev);
- if (err)
- goto out;
- return dev;
-out:
- free_netdev(dev);
- return ERR_PTR(err);
-}
-#endif
-
-static const struct net_device_ops ultra_netdev_ops = {
- .ndo_open = ultra_open,
- .ndo_stop = ultra_close_card,
-
- .ndo_start_xmit = ei_start_xmit,
- .ndo_tx_timeout = ei_tx_timeout,
- .ndo_get_stats = ei_get_stats,
- .ndo_set_rx_mode = ei_set_multicast_list,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = ultra_poll,
-#endif
-};
-
-static int __init ultra_probe1(struct net_device *dev, int ioaddr)
-{
- int i, retval;
- int checksum = 0;
- u8 macaddr[ETH_ALEN];
- const char *model_name;
- unsigned char eeprom_irq = 0;
- static unsigned version_printed;
- /* Values from various config regs. */
- unsigned char num_pages, irqreg, addr, piomode;
- unsigned char idreg = inb(ioaddr + 7);
- unsigned char reg4 = inb(ioaddr + 4) & 0x7f;
- struct ei_device *ei_local = netdev_priv(dev);
-
- if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME))
- return -EBUSY;
-
- /* Check the ID nibble. */
- if ((idreg & 0xF0) != 0x20 /* SMC Ultra */
- && (idreg & 0xF0) != 0x40) { /* SMC EtherEZ */
- retval = -ENODEV;
- goto out;
- }
-
- /* Select the station address register set. */
- outb(reg4, ioaddr + 4);
-
- for (i = 0; i < 8; i++)
- checksum += inb(ioaddr + 8 + i);
- if ((checksum & 0xff) != 0xFF) {
- retval = -ENODEV;
- goto out;
- }
-
- if ((ultra_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
- netdev_info(dev, version);
-
- model_name = (idreg & 0xF0) == 0x20 ? "SMC Ultra" : "SMC EtherEZ";
-
- for (i = 0; i < 6; i++)
- macaddr[i] = inb(ioaddr + 8 + i);
- eth_hw_addr_set(dev, macaddr);
-
- netdev_info(dev, "%s at %#3x, %pM", model_name,
- ioaddr, dev->dev_addr);
-
- /* Switch from the station address to the alternate register set and
- read the useful registers there. */
- outb(0x80 | reg4, ioaddr + 4);
-
- /* Enabled FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */
- outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
- piomode = inb(ioaddr + 0x8);
- addr = inb(ioaddr + 0xb);
- irqreg = inb(ioaddr + 0xd);
-
- /* Switch back to the station address register set so that the MS-DOS driver
- can find the card after a warm boot. */
- outb(reg4, ioaddr + 4);
-
- if (dev->irq < 2) {
- unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15};
- int irq;
-
- /* The IRQ bits are split. */
- irq = irqmap[((irqreg & 0x40) >> 4) + ((irqreg & 0x0c) >> 2)];
-
- if (irq == 0) {
- pr_cont(", failed to detect IRQ line.\n");
- retval = -EAGAIN;
- goto out;
- }
- dev->irq = irq;
- eeprom_irq = 1;
- }
-
- /* The 8390 isn't at the base address, so fake the offset */
- dev->base_addr = ioaddr+ULTRA_NIC_OFFSET;
-
- {
- static const int addr_tbl[4] = {
- 0x0C0000, 0x0E0000, 0xFC0000, 0xFE0000
- };
- static const short num_pages_tbl[4] = {
- 0x20, 0x40, 0x80, 0xff
- };
-
- dev->mem_start = ((addr & 0x0f) << 13) + addr_tbl[(addr >> 6) & 3] ;
- num_pages = num_pages_tbl[(addr >> 4) & 3];
- }
-
- ei_status.name = model_name;
- ei_status.word16 = 1;
- ei_status.tx_start_page = START_PG;
- ei_status.rx_start_page = START_PG + TX_PAGES;
- ei_status.stop_page = num_pages;
-
- ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG)*256);
- if (!ei_status.mem) {
- pr_cont(", failed to ioremap.\n");
- retval = -ENOMEM;
- goto out;
- }
-
- dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG)*256;
-
- if (piomode) {
- pr_cont(", %s IRQ %d programmed-I/O mode.\n",
- eeprom_irq ? "EEPROM" : "assigned ", dev->irq);
- ei_status.block_input = &ultra_pio_input;
- ei_status.block_output = &ultra_pio_output;
- ei_status.get_8390_hdr = &ultra_pio_get_hdr;
- } else {
- pr_cont(", %s IRQ %d memory %#lx-%#lx.\n",
- eeprom_irq ? "" : "assigned ", dev->irq, dev->mem_start,
- dev->mem_end-1);
- ei_status.block_input = &ultra_block_input;
- ei_status.block_output = &ultra_block_output;
- ei_status.get_8390_hdr = &ultra_get_8390_hdr;
- }
- ei_status.reset_8390 = &ultra_reset_8390;
-
- dev->netdev_ops = &ultra_netdev_ops;
- NS8390_init(dev, 0);
- ei_local->msg_enable = ultra_msg_enable;
-
- retval = register_netdev(dev);
- if (retval)
- goto out;
- return 0;
-out:
- release_region(ioaddr, ULTRA_IO_EXTENT);
- return retval;
-}
-
-#ifdef __ISAPNP__
-static int __init ultra_probe_isapnp(struct net_device *dev)
-{
- int i;
-
- for (i = 0; ultra_device_ids[i].vendor != 0; i++) {
- struct pnp_dev *idev = NULL;
-
- while ((idev = pnp_find_dev(NULL,
- ultra_device_ids[i].vendor,
- ultra_device_ids[i].function,
- idev))) {
- /* Avoid already found cards from previous calls */
- if (pnp_device_attach(idev) < 0)
- continue;
- if (pnp_activate_dev(idev) < 0) {
- __again:
- pnp_device_detach(idev);
- continue;
- }
- /* if no io and irq, search for next */
- if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0))
- goto __again;
- /* found it */
- dev->base_addr = pnp_port_start(idev, 0);
- dev->irq = pnp_irq(idev, 0);
- netdev_info(dev,
- "smc-ultra.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
- (char *) ultra_device_ids[i].driver_data,
- dev->base_addr, dev->irq);
- if (ultra_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
- netdev_err(dev,
- "smc-ultra.c: Probe of ISAPnP card at %#lx failed.\n",
- dev->base_addr);
- pnp_device_detach(idev);
- return -ENXIO;
- }
- ei_status.priv = (unsigned long)idev;
- break;
- }
- if (!idev)
- continue;
- return 0;
- }
-
- return -ENODEV;
-}
-#endif
-
-static int
-ultra_open(struct net_device *dev)
-{
- int retval;
- int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
- unsigned char irq2reg[] = {0, 0, 0x04, 0x08, 0, 0x0C, 0, 0x40,
- 0, 0x04, 0x44, 0x48, 0, 0, 0, 0x4C, };
-
- retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev);
- if (retval)
- return retval;
-
- outb(0x00, ioaddr); /* Disable shared memory for safety. */
- outb(0x80, ioaddr + 5);
- /* Set the IRQ line. */
- outb(inb(ioaddr + 4) | 0x80, ioaddr + 4);
- outb((inb(ioaddr + 13) & ~0x4C) | irq2reg[dev->irq], ioaddr + 13);
- outb(inb(ioaddr + 4) & 0x7f, ioaddr + 4);
-
- if (ei_status.block_input == &ultra_pio_input) {
- outb(0x11, ioaddr + 6); /* Enable interrupts and PIO. */
- outb(0x01, ioaddr + 0x19); /* Enable ring read auto-wrap. */
- } else
- outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
- /* Set the early receive warning level in window 0 high enough not
- to receive ERW interrupts. */
- outb_p(E8390_NODMA+E8390_PAGE0, dev->base_addr);
- outb(0xff, dev->base_addr + EN0_ERWCNT);
- ei_open(dev);
- return 0;
-}
-
-static void
-ultra_reset_8390(struct net_device *dev)
-{
- int cmd_port = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC base addr */
- struct ei_device *ei_local = netdev_priv(dev);
-
- outb(ULTRA_RESET, cmd_port);
- netif_dbg(ei_local, hw, dev, "resetting Ultra, t=%ld...\n", jiffies);
- ei_status.txing = 0;
-
- outb(0x00, cmd_port); /* Disable shared memory for safety. */
- outb(0x80, cmd_port + 5);
- if (ei_status.block_input == &ultra_pio_input)
- outb(0x11, cmd_port + 6); /* Enable interrupts and PIO. */
- else
- outb(0x01, cmd_port + 6); /* Enable interrupts and memory. */
-
- netif_dbg(ei_local, hw, dev, "reset done\n");
-}
-
-/* Grab the 8390 specific header. Similar to the block_input routine, but
- we don't need to be concerned with ring wrap as the header will be at
- the start of a page, so we optimize accordingly. */
-
-static void
-ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
-{
- void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG)<<8);
-
- outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem on */
-#ifdef __BIG_ENDIAN
- /* Officially this is what we are doing, but the readl() is faster */
- /* unfortunately it isn't endian aware of the struct */
- memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
- hdr->count = le16_to_cpu(hdr->count);
-#else
- ((unsigned int*)hdr)[0] = readl(hdr_start);
-#endif
- outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem off */
-}
-
-/* Block input and output are easy on shared memory ethercards, the only
- complication is when the ring buffer wraps. */
-
-static void
-ultra_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
-{
- void __iomem *xfer_start = ei_status.mem + ring_offset - (START_PG<<8);
-
- /* Enable shared memory. */
- outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
-
- if (ring_offset + count > ei_status.stop_page*256) {
- /* We must wrap the input move. */
- int semi_count = ei_status.stop_page*256 - ring_offset;
- memcpy_fromio(skb->data, xfer_start, semi_count);
- count -= semi_count;
- memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
- } else {
- memcpy_fromio(skb->data, xfer_start, count);
- }
-
- outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
-}
-
-static void
-ultra_block_output(struct net_device *dev, int count, const unsigned char *buf,
- int start_page)
-{
- void __iomem *shmem = ei_status.mem + ((start_page - START_PG)<<8);
-
- /* Enable shared memory. */
- outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
-
- memcpy_toio(shmem, buf, count);
-
- outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
-}
-
-/* The identical operations for programmed I/O cards.
- The PIO model is trivial to use: the 16 bit start address is written
- byte-sequentially to IOPA, with no intervening I/O operations, and the
- data is read or written to the IOPD data port.
- The only potential complication is that the address register is shared
- and must be always be rewritten between each read/write direction change.
- This is no problem for us, as the 8390 code ensures that we are single
- threaded. */
-static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
- int ring_page)
-{
- int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
- outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */
- outb(ring_page, ioaddr + IOPA);
- insw(ioaddr + IOPD, hdr, sizeof(struct e8390_pkt_hdr)>>1);
-}
-
-static void ultra_pio_input(struct net_device *dev, int count,
- struct sk_buff *skb, int ring_offset)
-{
- int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
- char *buf = skb->data;
-
- /* For now set the address again, although it should already be correct. */
- outb(ring_offset, ioaddr + IOPA); /* Set the address, LSB first. */
- outb(ring_offset >> 8, ioaddr + IOPA);
- /* We know skbuffs are padded to at least word alignment. */
- insw(ioaddr + IOPD, buf, (count+1)>>1);
-}
-static void ultra_pio_output(struct net_device *dev, int count,
- const unsigned char *buf, const int start_page)
-{
- int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
- outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */
- outb(start_page, ioaddr + IOPA);
- /* An extra odd byte is OK here as well. */
- outsw(ioaddr + IOPD, buf, (count+1)>>1);
-}
-
-static int
-ultra_close_card(struct net_device *dev)
-{
- int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* CMDREG */
- struct ei_device *ei_local = netdev_priv(dev);
-
- netif_stop_queue(dev);
-
- netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard.\n");
-
- outb(0x00, ioaddr + 6); /* Disable interrupts. */
- free_irq(dev->irq, dev);
-
- NS8390_init(dev, 0);
-
- /* We should someday disable shared memory and change to 8-bit mode
- "just in case"... */
-
- return 0;
-}
-
-
-#ifdef MODULE
-#define MAX_ULTRA_CARDS 4 /* Max number of Ultra cards per module */
-static struct net_device *dev_ultra[MAX_ULTRA_CARDS];
-static int io[MAX_ULTRA_CARDS];
-static int irq[MAX_ULTRA_CARDS];
-
-module_param_hw_array(io, int, ioport, NULL, 0);
-module_param_hw_array(irq, int, irq, NULL, 0);
-module_param_named(msg_enable, ultra_msg_enable, uint, 0444);
-MODULE_PARM_DESC(io, "I/O base address(es)");
-MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
-MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
-MODULE_DESCRIPTION("SMC Ultra/EtherEZ ISA/PnP Ethernet driver");
-MODULE_LICENSE("GPL");
-
-/* This is set up so that only a single autoprobe takes place per call.
-ISA device autoprobes on a running machine are not recommended. */
-static int __init ultra_init_module(void)
-{
- struct net_device *dev;
- int this_dev, found = 0;
-
- for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
- if (io[this_dev] == 0) {
- if (this_dev != 0) break; /* only autoprobe 1st one */
- printk(KERN_NOTICE "smc-ultra.c: Presently autoprobing (not recommended) for a single card.\n");
- }
- dev = alloc_ei_netdev();
- if (!dev)
- break;
- dev->irq = irq[this_dev];
- dev->base_addr = io[this_dev];
- if (do_ultra_probe(dev) == 0) {
- dev_ultra[found++] = dev;
- continue;
- }
- free_netdev(dev);
- printk(KERN_WARNING "smc-ultra.c: No SMC Ultra card found (i/o = 0x%x).\n", io[this_dev]);
- break;
- }
- if (found)
- return 0;
- return -ENXIO;
-}
-module_init(ultra_init_module);
-
-static void cleanup_card(struct net_device *dev)
-{
- /* NB: ultra_close_card() does free_irq */
-#ifdef __ISAPNP__
- struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
- if (idev)
- pnp_device_detach(idev);
-#endif
- release_region(dev->base_addr - ULTRA_NIC_OFFSET, ULTRA_IO_EXTENT);
- iounmap(ei_status.mem);
-}
-
-static void __exit ultra_cleanup_module(void)
-{
- int this_dev;
-
- for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
- struct net_device *dev = dev_ultra[this_dev];
- if (dev) {
- unregister_netdev(dev);
- cleanup_card(dev);
- free_netdev(dev);
- }
- }
-}
-module_exit(ultra_cleanup_module);
-#endif /* MODULE */
projects / thirdparty / linux.git / commitdiff
