Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/net/es3210.c b/drivers/net/es3210.c
new file mode 100644
index 0000000..f1e8150
--- /dev/null
+++ b/drivers/net/es3210.c
@@ -0,0 +1,478 @@
+/*
+ es3210.c
+
+ Linux driver for Racal-Interlan ES3210 EISA Network Adapter
+
+ Copyright (C) 1996, Paul Gortmaker.
+
+ This software may be used and distributed according to the terms
+ of the GNU General Public License, incorporated herein by reference.
+
+ Information and Code Sources:
+
+ 1) The existing myriad of Linux 8390 drivers written by Donald Becker.
+
+ 2) Once again Russ Nelson's asm packet driver provided additional info.
+
+ 3) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.
+ Too bad it doesn't work -- see below.
+
+ The ES3210 is an EISA shared memory NS8390 implementation. Note
+ that all memory copies to/from the board must be 32bit transfers.
+ Which rules out using eth_io_copy_and_sum() in this driver.
+
+ Apparently there are two slightly different revisions of the
+ card, since there are two distinct EISA cfg files (!rii0101.cfg
+ and !rii0102.cfg) One has media select in the cfg file and the
+ other doesn't. Hopefully this will work with either.
+
+ That is about all I can tell you about it, having never actually
+ even seen one of these cards. :) Try http://www.interlan.com
+ if you want more info.
+
+ Thanks go to Mark Salazar for testing v0.02 of this driver.
+
+ Bugs, to-fix, etc:
+
+ 1) The EISA cfg ports that are *supposed* to have the IRQ and shared
+ mem values just read 0xff all the time. Hrrmpf. Apparently the
+ same happens with the packet driver as the code for reading
+ these registers is disabled there. In the meantime, boot with:
+ ether=<IRQ>,0,0x<shared_mem_addr>,eth0 to override the IRQ and
+ shared memory detection. (The i/o port detection is okay.)
+
+ 2) Module support currently untested. Probably works though.
+
+*/
+
+static const char version[] =
+ "es3210.c: Driver revision v0.03, 14/09/96\n";
+
+#include <linux/module.h>
+#include <linux/eisa.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+
+#include <asm/io.h>
+#include <asm/system.h>
+
+#include "8390.h"
+
+static int es_probe1(struct net_device *dev, int ioaddr);
+
+static int es_open(struct net_device *dev);
+static int es_close(struct net_device *dev);
+
+static void es_reset_8390(struct net_device *dev);
+
+static void es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
+static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
+static void es_block_output(struct net_device *dev, int count, const unsigned char *buf, int start_page);
+
+#define ES_START_PG 0x00 /* First page of TX buffer */
+#define ES_STOP_PG 0x40 /* Last page +1 of RX ring */
+
+#define ES_IO_EXTENT 0x37 /* The cfg file says 0xc90 -> 0xcc7 */
+#define ES_ID_PORT 0xc80 /* Same for all EISA cards */
+#define ES_SA_PROM 0xc90 /* Start of e'net addr. */
+#define ES_RESET_PORT 0xc84 /* From the packet driver source */
+#define ES_NIC_OFFSET 0xca0 /* Hello, the 8390 is *here* */
+
+#define ES_ADDR0 0x02 /* 3 byte vendor prefix */
+#define ES_ADDR1 0x07
+#define ES_ADDR2 0x01
+
+/*
+ * Two card revisions. EISA ID's are always rev. minor, rev. major,, and
+ * then the three vendor letters stored in 5 bits each, with an "a" = 1.
+ * For eg: "rii" = 10010 01001 01001 = 0x4929, which is how the EISA
+ * config utility determines automagically what config file(s) to use.
+ */
+#define ES_EISA_ID1 0x01012949 /* !rii0101.cfg */
+#define ES_EISA_ID2 0x02012949 /* !rii0102.cfg */
+
+#define ES_CFG1 0xcc0 /* IOPORT(1) --> IOPORT(6) in cfg file */
+#define ES_CFG2 0xcc1
+#define ES_CFG3 0xcc2
+#define ES_CFG4 0xcc3
+#define ES_CFG5 0xcc4
+#define ES_CFG6 0xc84 /* NB: 0xc84 is also "reset" port. */
+
+/*
+ * You can OR any of the following bits together and assign it
+ * to ES_DEBUG to get verbose driver info during operation.
+ * Some of these don't do anything yet.
+ */
+
+#define ES_D_PROBE 0x01
+#define ES_D_RX_PKT 0x02
+#define ES_D_TX_PKT 0x04
+#define ED_D_IRQ 0x08
+
+#define ES_DEBUG 0
+
+static unsigned char lo_irq_map[] __initdata = {3, 4, 5, 6, 7, 9, 10};
+static unsigned char hi_irq_map[] __initdata = {11, 12, 0, 14, 0, 0, 0, 15};
+
+/*
+ * Probe for the card. The best way is to read the EISA ID if it
+ * is known. Then we check the prefix of the station address
+ * PROM for a match against the Racal-Interlan assigned value.
+ */
+
+static int __init do_es_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 es_probe1(dev, ioaddr);
+ else if (ioaddr > 0) /* Don't probe at all. */
+ return -ENXIO;
+
+ if (!EISA_bus) {
+#if ES_DEBUG & ES_D_PROBE
+ printk("es3210.c: Not EISA bus. Not probing high ports.\n");
+#endif
+ return -ENXIO;
+ }
+
+ /* EISA spec allows for up to 16 slots, but 8 is typical. */
+ for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
+ if (es_probe1(dev, ioaddr) == 0)
+ return 0;
+ dev->irq = irq;
+ dev->mem_start = mem_start;
+ }
+
+ return -ENODEV;
+}
+
+static void cleanup_card(struct net_device *dev)
+{
+ free_irq(dev->irq, dev);
+ release_region(dev->base_addr, ES_IO_EXTENT);
+ iounmap(ei_status.mem);
+}
+
+#ifndef MODULE
+struct net_device * __init es_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_es_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 es_probe1(struct net_device *dev, int ioaddr)
+{
+ int i, retval;
+ unsigned long eisa_id;
+
+ if (!request_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT, "es3210"))
+ return -ENODEV;
+
+#if ES_DEBUG & ES_D_PROBE
+ printk("es3210.c: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + ES_ID_PORT));
+ printk("es3210.c: config regs: %#x %#x %#x %#x %#x %#x\n",
+ inb(ioaddr + ES_CFG1), inb(ioaddr + ES_CFG2), inb(ioaddr + ES_CFG3),
+ inb(ioaddr + ES_CFG4), inb(ioaddr + ES_CFG5), inb(ioaddr + ES_CFG6));
+#endif
+
+
+/* Check the EISA ID of the card. */
+ eisa_id = inl(ioaddr + ES_ID_PORT);
+ if ((eisa_id != ES_EISA_ID1) && (eisa_id != ES_EISA_ID2)) {
+ retval = -ENODEV;
+ goto out;
+ }
+
+/* Check the Racal vendor ID as well. */
+ if (inb(ioaddr + ES_SA_PROM + 0) != ES_ADDR0
+ || inb(ioaddr + ES_SA_PROM + 1) != ES_ADDR1
+ || inb(ioaddr + ES_SA_PROM + 2) != ES_ADDR2 ) {
+ printk("es3210.c: card not found");
+ for(i = 0; i < ETHER_ADDR_LEN; i++)
+ printk(" %02x", inb(ioaddr + ES_SA_PROM + i));
+ printk(" (invalid prefix).\n");
+ retval = -ENODEV;
+ goto out;
+ }
+
+ printk("es3210.c: ES3210 rev. %ld at %#x, node", eisa_id>>24, ioaddr);
+ for(i = 0; i < ETHER_ADDR_LEN; i++)
+ printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + ES_SA_PROM + i)));
+
+ /* Snarf the interrupt now. */
+ if (dev->irq == 0) {
+ unsigned char hi_irq = inb(ioaddr + ES_CFG2) & 0x07;
+ unsigned char lo_irq = inb(ioaddr + ES_CFG1) & 0xfe;
+
+ if (hi_irq != 0) {
+ dev->irq = hi_irq_map[hi_irq - 1];
+ } else {
+ int i = 0;
+ while (lo_irq > (1<<i)) i++;
+ dev->irq = lo_irq_map[i];
+ }
+ printk(" using IRQ %d", dev->irq);
+#if ES_DEBUG & ES_D_PROBE
+ printk("es3210.c: hi_irq %#x, lo_irq %#x, dev->irq = %d\n",
+ hi_irq, lo_irq, dev->irq);
+#endif
+ } else {
+ if (dev->irq == 2)
+ dev->irq = 9; /* Doh! */
+ printk(" assigning IRQ %d", dev->irq);
+ }
+
+ if (request_irq(dev->irq, ei_interrupt, 0, "es3210", dev)) {
+ printk (" unable to get IRQ %d.\n", dev->irq);
+ retval = -EAGAIN;
+ goto out;
+ }
+
+ if (dev->mem_start == 0) {
+ unsigned char mem_enabled = inb(ioaddr + ES_CFG2) & 0xc0;
+ unsigned char mem_bits = inb(ioaddr + ES_CFG3) & 0x07;
+
+ if (mem_enabled != 0x80) {
+ printk(" shared mem disabled - giving up\n");
+ retval = -ENXIO;
+ goto out1;
+ }
+ dev->mem_start = 0xC0000 + mem_bits*0x4000;
+ printk(" using ");
+ } else {
+ printk(" assigning ");
+ }
+
+ ei_status.mem = ioremap(dev->mem_start, (ES_STOP_PG - ES_START_PG)*256);
+ if (!ei_status.mem) {
+ printk("ioremap failed - giving up\n");
+ retval = -ENXIO;
+ goto out1;
+ }
+
+ dev->mem_end = dev->mem_start + (ES_STOP_PG - ES_START_PG)*256;
+
+ printk("mem %#lx-%#lx\n", dev->mem_start, dev->mem_end-1);
+
+#if ES_DEBUG & ES_D_PROBE
+ if (inb(ioaddr + ES_CFG5))
+ printk("es3210: Warning - DMA channel enabled, but not used here.\n");
+#endif
+ /* Note, point at the 8390, and not the card... */
+ dev->base_addr = ioaddr + ES_NIC_OFFSET;
+
+ ei_status.name = "ES3210";
+ ei_status.tx_start_page = ES_START_PG;
+ ei_status.rx_start_page = ES_START_PG + TX_PAGES;
+ ei_status.stop_page = ES_STOP_PG;
+ ei_status.word16 = 1;
+
+ if (ei_debug > 0)
+ printk(version);
+
+ ei_status.reset_8390 = &es_reset_8390;
+ ei_status.block_input = &es_block_input;
+ ei_status.block_output = &es_block_output;
+ ei_status.get_8390_hdr = &es_get_8390_hdr;
+
+ dev->open = &es_open;
+ dev->stop = &es_close;
+#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 + ES_SA_PROM, ES_IO_EXTENT);
+ return retval;
+}
+
+/*
+ * Reset as per the packet driver method. Judging by the EISA cfg
+ * file, this just toggles the "Board Enable" bits (bit 2 and 0).
+ */
+
+static void es_reset_8390(struct net_device *dev)
+{
+ unsigned short ioaddr = dev->base_addr;
+ unsigned long end;
+
+ outb(0x04, ioaddr + ES_RESET_PORT);
+ if (ei_debug > 1) printk("%s: resetting the ES3210...", dev->name);
+
+ end = jiffies + 2*HZ/100;
+ while ((signed)(end - jiffies) > 0) continue;
+
+ ei_status.txing = 0;
+ outb(0x01, ioaddr + ES_RESET_PORT);
+ if (ei_debug > 1) printk("reset done\n");
+
+ return;
+}
+
+/*
+ * Note: In the following three functions is the implicit assumption
+ * that the associated memcpy will only use "rep; movsl" as long as
+ * we keep the counts as some multiple of doublewords. This is a
+ * requirement of the hardware, and also prevents us from using
+ * eth_io_copy_and_sum() since we can't guarantee it will limit
+ * itself to doubleword access.
+ */
+
+/*
+ * 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. (A single doubleword.)
+ */
+
+static void
+es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+ void __iomem *hdr_start = ei_status.mem + ((ring_page - ES_START_PG)<<8);
+ memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
+ hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
+}
+
+/*
+ * Block input and output are easy on shared memory ethercards, the only
+ * complication is when the ring buffer wraps. The count will already
+ * be rounded up to a doubleword value via es_get_8390_hdr() above.
+ */
+
+static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb,
+ int ring_offset)
+{
+ void __iomem *xfer_start = ei_status.mem + ring_offset - ES_START_PG*256;
+
+ if (ring_offset + count > ES_STOP_PG*256) {
+ /* Packet wraps over end of ring buffer. */
+ int semi_count = ES_STOP_PG*256 - ring_offset;
+ memcpy_fromio(skb->data, xfer_start, semi_count);
+ count -= semi_count;
+ memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
+ } else {
+ /* Packet is in one chunk. */
+ eth_io_copy_and_sum(skb, xfer_start, count, 0);
+ }
+}
+
+static void es_block_output(struct net_device *dev, int count,
+ const unsigned char *buf, int start_page)
+{
+ void __iomem *shmem = ei_status.mem + ((start_page - ES_START_PG)<<8);
+
+ count = (count + 3) & ~3; /* Round up to doubleword */
+ memcpy_toio(shmem, buf, count);
+}
+
+static int es_open(struct net_device *dev)
+{
+ ei_open(dev);
+ return 0;
+}
+
+static int es_close(struct net_device *dev)
+{
+
+ if (ei_debug > 1)
+ printk("%s: Shutting down ethercard.\n", dev->name);
+
+ ei_close(dev);
+ return 0;
+}
+
+#ifdef MODULE
+#define MAX_ES_CARDS 4 /* Max number of ES3210 cards per module */
+#define NAMELEN 8 /* # of chars for storing dev->name */
+static struct net_device *dev_es3210[MAX_ES_CARDS];
+static int io[MAX_ES_CARDS];
+static int irq[MAX_ES_CARDS];
+static int mem[MAX_ES_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("Racal-Interlan ES3210 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_ES_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];
+ if (do_es_probe(dev) == 0) {
+ if (register_netdev(dev) == 0) {
+ dev_es3210[found++] = dev;
+ continue;
+ }
+ cleanup_card(dev);
+ }
+ free_netdev(dev);
+ printk(KERN_WARNING "es3210.c: No es3210 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_ES_CARDS; this_dev++) {
+ struct net_device *dev = dev_es3210[this_dev];
+ if (dev) {
+ unregister_netdev(dev);
+ cleanup_card(dev);
+ free_netdev(dev);
+ }
+ }
+}
+#endif /* MODULE */
+