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Diffstat (limited to 'drivers/net/ac3200.c')
-rw-r--r--drivers/net/ac3200.c424
1 files changed, 424 insertions, 0 deletions
diff --git a/drivers/net/ac3200.c b/drivers/net/ac3200.c
new file mode 100644
index 00000000000..24fba36b5c1
--- /dev/null
+++ b/drivers/net/ac3200.c
@@ -0,0 +1,424 @@
+/* ac3200.c: A driver for the Ansel Communications EISA ethernet adaptor. */
+/*
+ Written 1993, 1994 by Donald Becker.
+ Copyright 1993 United States Government as represented by the Director,
+ National Security Agency. This software may only be used and distributed
+ according to the terms of the GNU General Public License as modified by SRC,
+ incorporated herein by reference.
+
+ The author may be reached as becker@scyld.com, or C/O
+ Scyld Computing Corporation
+ 410 Severn Ave., Suite 210
+ Annapolis MD 21403
+
+ This is driver for the Ansel Communications Model 3200 EISA Ethernet LAN
+ Adapter. The programming information is from the users manual, as related
+ by glee@ardnassak.math.clemson.edu.
+
+ Changelog:
+
+ Paul Gortmaker 05/98 : add support for shared mem above 1MB.
+
+ */
+
+static const char version[] =
+ "ac3200.c:v1.01 7/1/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
+
+#include <linux/module.h>
+#include <linux/eisa.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include "8390.h"
+
+#define DRV_NAME "ac3200"
+
+/* Offsets from the base address. */
+#define AC_NIC_BASE 0x00
+#define AC_SA_PROM 0x16 /* The station address PROM. */
+#define AC_ADDR0 0x00 /* Prefix station address values. */
+#define AC_ADDR1 0x40
+#define AC_ADDR2 0x90
+#define AC_ID_PORT 0xC80
+#define AC_EISA_ID 0x0110d305
+#define AC_RESET_PORT 0xC84
+#define AC_RESET 0x00
+#define AC_ENABLE 0x01
+#define AC_CONFIG 0xC90 /* The configuration port. */
+
+#define AC_IO_EXTENT 0x20
+ /* Actually accessed is:
+ * AC_NIC_BASE (0-15)
+ * AC_SA_PROM (0-5)
+ * AC_ID_PORT (0-3)
+ * AC_RESET_PORT
+ * AC_CONFIG
+ */
+
+/* Decoding of the configuration register. */
+static unsigned char config2irqmap[8] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
+static int addrmap[8] =
+{0xFF0000, 0xFE0000, 0xFD0000, 0xFFF0000, 0xFFE0000, 0xFFC0000, 0xD0000, 0 };
+static const char *port_name[4] = { "10baseT", "invalid", "AUI", "10base2"};
+
+#define config2irq(configval) config2irqmap[((configval) >> 3) & 7]
+#define config2mem(configval) addrmap[(configval) & 7]
+#define config2name(configval) port_name[((configval) >> 6) & 3]
+
+/* First and last 8390 pages. */
+#define AC_START_PG 0x00 /* First page of 8390 TX buffer */
+#define AC_STOP_PG 0x80 /* Last page +1 of the 8390 RX ring */
+
+static int ac_probe1(int ioaddr, struct net_device *dev);
+
+static int ac_open(struct net_device *dev);
+static void ac_reset_8390(struct net_device *dev);
+static void ac_block_input(struct net_device *dev, int count,
+ struct sk_buff *skb, int ring_offset);
+static void ac_block_output(struct net_device *dev, const int count,
+ const unsigned char *buf, const int start_page);
+static void ac_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
+ int ring_page);
+
+static int ac_close_card(struct net_device *dev);
+
+
+/* Probe for the AC3200.
+
+ The AC3200 can be identified by either the EISA configuration registers,
+ or the unique value in the station address PROM.
+ */
+
+static int __init do_ac3200_probe(struct net_device *dev)
+{
+ unsigned short ioaddr = dev->base_addr;
+ int irq = dev->irq;
+ int mem_start = dev->mem_start;
+
+ SET_MODULE_OWNER(dev);
+
+ if (ioaddr > 0x1ff) /* Check a single specified location. */
+ return ac_probe1(ioaddr, dev);
+ else if (ioaddr > 0) /* Don't probe at all. */
+ return -ENXIO;
+
+ if ( ! EISA_bus)
+ return -ENXIO;
+
+ for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
+ if (ac_probe1(ioaddr, dev) == 0)
+ return 0;
+ dev->irq = irq;
+ dev->mem_start = mem_start;
+ }
+
+ return -ENODEV;
+}
+
+static void cleanup_card(struct net_device *dev)
+{
+ /* Someday free_irq may be in ac_close_card() */
+ free_irq(dev->irq, dev);
+ release_region(dev->base_addr, AC_IO_EXTENT);
+ iounmap(ei_status.mem);
+}
+
+#ifndef MODULE
+struct net_device * __init ac3200_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_ac3200_probe(dev);
+ if (err)
+ goto out;
+ err = register_netdev(dev);
+ if (err)
+ goto out1;
+ return dev;
+out1:
+ cleanup_card(dev);
+out:
+ free_netdev(dev);
+ return ERR_PTR(err);
+}
+#endif
+
+static int __init ac_probe1(int ioaddr, struct net_device *dev)
+{
+ int i, retval;
+
+ if (!request_region(ioaddr, AC_IO_EXTENT, DRV_NAME))
+ return -EBUSY;
+
+ if (inb_p(ioaddr + AC_ID_PORT) == 0xff) {
+ retval = -ENODEV;
+ goto out;
+ }
+
+ if (inl(ioaddr + AC_ID_PORT) != AC_EISA_ID) {
+ retval = -ENODEV;
+ goto out;
+ }
+
+#ifndef final_version
+ printk(KERN_DEBUG "AC3200 ethercard configuration register is %#02x,"
+ " EISA ID %02x %02x %02x %02x.\n", inb(ioaddr + AC_CONFIG),
+ inb(ioaddr + AC_ID_PORT + 0), inb(ioaddr + AC_ID_PORT + 1),
+ inb(ioaddr + AC_ID_PORT + 2), inb(ioaddr + AC_ID_PORT + 3));
+#endif
+
+ printk("AC3200 in EISA slot %d, node", ioaddr/0x1000);
+ for(i = 0; i < 6; i++)
+ printk(" %02x", dev->dev_addr[i] = inb(ioaddr + AC_SA_PROM + i));
+
+#if 0
+ /* Check the vendor ID/prefix. Redundant after checking the EISA ID */
+ if (inb(ioaddr + AC_SA_PROM + 0) != AC_ADDR0
+ || inb(ioaddr + AC_SA_PROM + 1) != AC_ADDR1
+ || inb(ioaddr + AC_SA_PROM + 2) != AC_ADDR2 ) {
+ printk(", not found (invalid prefix).\n");
+ retval = -ENODEV;
+ goto out;
+ }
+#endif
+
+ /* Assign and allocate the interrupt now. */
+ if (dev->irq == 0) {
+ dev->irq = config2irq(inb(ioaddr + AC_CONFIG));
+ printk(", using");
+ } else {
+ dev->irq = irq_canonicalize(dev->irq);
+ printk(", assigning");
+ }
+
+ retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev);
+ if (retval) {
+ printk (" nothing! Unable to get IRQ %d.\n", dev->irq);
+ goto out1;
+ }
+
+ printk(" IRQ %d, %s port\n", dev->irq, port_name[dev->if_port]);
+
+ dev->base_addr = ioaddr;
+
+#ifdef notyet
+ if (dev->mem_start) { /* Override the value from the board. */
+ for (i = 0; i < 7; i++)
+ if (addrmap[i] == dev->mem_start)
+ break;
+ if (i >= 7)
+ i = 0;
+ outb((inb(ioaddr + AC_CONFIG) & ~7) | i, ioaddr + AC_CONFIG);
+ }
+#endif
+
+ dev->if_port = inb(ioaddr + AC_CONFIG) >> 6;
+ dev->mem_start = config2mem(inb(ioaddr + AC_CONFIG));
+
+ printk("%s: AC3200 at %#3x with %dkB memory at physical address %#lx.\n",
+ dev->name, ioaddr, AC_STOP_PG/4, dev->mem_start);
+
+ /*
+ * BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
+ * the card mem within the region covered by `normal' RAM !!!
+ *
+ * ioremap() will fail in that case.
+ */
+ ei_status.mem = ioremap(dev->mem_start, AC_STOP_PG*0x100);
+ if (!ei_status.mem) {
+ printk(KERN_ERR "ac3200.c: Unable to remap card memory above 1MB !!\n");
+ printk(KERN_ERR "ac3200.c: Try using EISA SCU to set memory below 1MB.\n");
+ printk(KERN_ERR "ac3200.c: Driver NOT installed.\n");
+ retval = -EINVAL;
+ goto out1;
+ }
+ printk("ac3200.c: remapped %dkB card memory to virtual address %p\n",
+ AC_STOP_PG/4, ei_status.mem);
+
+ dev->mem_start = (unsigned long)ei_status.mem;
+ dev->mem_end = dev->mem_start + (AC_STOP_PG - AC_START_PG)*256;
+
+ ei_status.name = "AC3200";
+ ei_status.tx_start_page = AC_START_PG;
+ ei_status.rx_start_page = AC_START_PG + TX_PAGES;
+ ei_status.stop_page = AC_STOP_PG;
+ ei_status.word16 = 1;
+
+ if (ei_debug > 0)
+ printk(version);
+
+ ei_status.reset_8390 = &ac_reset_8390;
+ ei_status.block_input = &ac_block_input;
+ ei_status.block_output = &ac_block_output;
+ ei_status.get_8390_hdr = &ac_get_8390_hdr;
+
+ dev->open = &ac_open;
+ dev->stop = &ac_close_card;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = ei_poll;
+#endif
+ NS8390_init(dev, 0);
+ return 0;
+out1:
+ free_irq(dev->irq, dev);
+out:
+ release_region(ioaddr, AC_IO_EXTENT);
+ return retval;
+}
+
+static int ac_open(struct net_device *dev)
+{
+#ifdef notyet
+ /* Someday we may enable the IRQ and shared memory here. */
+ int ioaddr = dev->base_addr;
+#endif
+
+ ei_open(dev);
+ return 0;
+}
+
+static void ac_reset_8390(struct net_device *dev)
+{
+ ushort ioaddr = dev->base_addr;
+
+ outb(AC_RESET, ioaddr + AC_RESET_PORT);
+ if (ei_debug > 1) printk("resetting AC3200, t=%ld...", jiffies);
+
+ ei_status.txing = 0;
+ outb(AC_ENABLE, ioaddr + AC_RESET_PORT);
+ if (ei_debug > 1) printk("reset done\n");
+
+ return;
+}
+
+/* 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
+ac_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+ void __iomem *hdr_start = ei_status.mem + ((ring_page - AC_START_PG)<<8);
+ memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
+}
+
+/* Block input and output are easy on shared memory ethercards, the only
+ complication is when the ring buffer wraps. */
+
+static void ac_block_input(struct net_device *dev, int count, struct sk_buff *skb,
+ int ring_offset)
+{
+ void __iomem *start = ei_status.mem + ring_offset - AC_START_PG*256;
+
+ if (ring_offset + count > AC_STOP_PG*256) {
+ /* We must wrap the input move. */
+ int semi_count = AC_STOP_PG*256 - ring_offset;
+ memcpy_fromio(skb->data, start, semi_count);
+ count -= semi_count;
+ memcpy_fromio(skb->data + semi_count,
+ ei_status.mem + TX_PAGES*256, count);
+ } else {
+ /* Packet is in one chunk -- we can copy + cksum. */
+ eth_io_copy_and_sum(skb, start, count, 0);
+ }
+}
+
+static void ac_block_output(struct net_device *dev, int count,
+ const unsigned char *buf, int start_page)
+{
+ void __iomem *shmem = ei_status.mem + ((start_page - AC_START_PG)<<8);
+
+ memcpy_toio(shmem, buf, count);
+}
+
+static int ac_close_card(struct net_device *dev)
+{
+ if (ei_debug > 1)
+ printk("%s: Shutting down ethercard.\n", dev->name);
+
+#ifdef notyet
+ /* We should someday disable shared memory and interrupts. */
+ outb(0x00, ioaddr + 6); /* Disable interrupts. */
+ free_irq(dev->irq, dev);
+#endif
+
+ ei_close(dev);
+ return 0;
+}
+
+#ifdef MODULE
+#define MAX_AC32_CARDS 4 /* Max number of AC32 cards per module */
+static struct net_device *dev_ac32[MAX_AC32_CARDS];
+static int io[MAX_AC32_CARDS];
+static int irq[MAX_AC32_CARDS];
+static int mem[MAX_AC32_CARDS];
+module_param_array(io, int, NULL, 0);
+module_param_array(irq, int, NULL, 0);
+module_param_array(mem, int, NULL, 0);
+MODULE_PARM_DESC(io, "I/O base address(es)");
+MODULE_PARM_DESC(irq, "IRQ number(s)");
+MODULE_PARM_DESC(mem, "Memory base address(es)");
+MODULE_DESCRIPTION("Ansel AC3200 EISA ethernet driver");
+MODULE_LICENSE("GPL");
+
+int
+init_module(void)
+{
+ struct net_device *dev;
+ int this_dev, found = 0;
+
+ for (this_dev = 0; this_dev < MAX_AC32_CARDS; this_dev++) {
+ if (io[this_dev] == 0 && this_dev != 0)
+ break;
+ dev = alloc_ei_netdev();
+ if (!dev)
+ break;
+ dev->irq = irq[this_dev];
+ dev->base_addr = io[this_dev];
+ dev->mem_start = mem[this_dev]; /* Currently ignored by driver */
+ if (do_ac3200_probe(dev) == 0) {
+ if (register_netdev(dev) == 0) {
+ dev_ac32[found++] = dev;
+ continue;
+ }
+ cleanup_card(dev);
+ }
+ free_netdev(dev);
+ printk(KERN_WARNING "ac3200.c: No ac3200 card found (i/o = 0x%x).\n", io[this_dev]);
+ break;
+ }
+ if (found)
+ return 0;
+ return -ENXIO;
+}
+
+void
+cleanup_module(void)
+{
+ int this_dev;
+
+ for (this_dev = 0; this_dev < MAX_AC32_CARDS; this_dev++) {
+ struct net_device *dev = dev_ac32[this_dev];
+ if (dev) {
+ unregister_netdev(dev);
+ cleanup_card(dev);
+ free_netdev(dev);
+ }
+ }
+}
+#endif /* MODULE */
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