Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 508 insertions, 0 deletions

diff --git a/drivers/net/smc-mca.c b/drivers/net/smc-mca.c
new file mode 100644
index 000000000000..990201f42ba0
--- /dev/null
+++ b/drivers/net/smc-mca.c
@@ -0,0 +1,508 @@
+/* smc-mca.c: A SMC Ultra ethernet driver for linux. */
+/*
+    Most of this driver, except for ultramca_probe is nearly
+    verbatim from smc-ultra.c by Donald Becker. The rest is
+    written and copyright 1996 by David Weis, weisd3458@uni.edu
+
+    This is a driver for the SMC Ultra and SMC EtherEZ ethercards.
+
+    This driver uses the cards in the 8390-compatible, shared memory mode.
+    Most of the run-time complexity is handled by the generic code in
+    8390.c.
+
+    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 does not support the programmed-I/O data transfer mode of
+    the EtherEZ.  That support (if available) is smc-ez.c.  Nor does it
+    use the non-8390-compatible "Altego" mode. (No support currently planned.)
+
+    Changelog:
+
+    Paul Gortmaker       : multiple card support for module users.
+    David Weis           : Micro Channel-ized it.
+    Tom Sightler         : Added support for IBM PS/2 Ethernet Adapter/A
+    Christopher Turcksin : Changed MCA-probe so that multiple adapters are
+                           found correctly (Jul 16, 1997)
+    Chris Beauregard     : Tried to merge the two changes above (Dec 15, 1997)
+    Tom Sightler         : Fixed minor detection bug caused by above merge
+    Tom Sightler         : Added support for three more Western Digital
+                           MCA-adapters
+    Tom Sightler         : Added support for 2.2.x mca_find_unused_adapter
+    Hartmut Schmidt      : - Modified parameter detection to handle each
+                             card differently depending on a switch-list
+                           - 'card_ver' removed from the adapter list
+                           - Some minor bug fixes
+*/
+
+#include <linux/mca.h>
+#include <linux/module.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"
+#include "smc-mca.h"
+
+#define DRV_NAME "smc-mca"
+
+static int ultramca_open(struct net_device *dev);
+static void ultramca_reset_8390(struct net_device *dev);
+static void ultramca_get_8390_hdr(struct net_device *dev,
+                                  struct e8390_pkt_hdr *hdr,
+                                  int ring_page);
+static void ultramca_block_input(struct net_device *dev, int count,
+                                 struct sk_buff *skb,
+                                 int ring_offset);
+static void ultramca_block_output(struct net_device *dev, int count,
+                                  const unsigned char *buf,
+                                  const int start_page);
+static int ultramca_close_card(struct net_device *dev);
+
+#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 ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
+#define ULTRA_IO_EXTENT 32
+#define EN0_ERWCNT      0x08  /* Early receive warning count. */
+
+#define _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A            0
+#define _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A            1
+#define _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A              2
+#define _6fc1_WD_Starcard_PLUS_A_WD8003ST_A                            3
+#define _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A                        4
+#define _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A        5
+#define _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A        6
+#define _efe5_IBM_PS2_Adapter_A_for_Ethernet                           7
+
+struct smc_mca_adapters_t {
+        unsigned int id;
+        char *name;
+};
+
+#define MAX_ULTRAMCA_CARDS 4    /* Max number of Ultra cards per module */
+
+static int ultra_io[MAX_ULTRAMCA_CARDS];
+static int ultra_irq[MAX_ULTRAMCA_CARDS];
+MODULE_LICENSE("GPL");
+
+module_param_array(ultra_io, int, NULL, 0);
+module_param_array(ultra_irq, int, NULL, 0);
+MODULE_PARM_DESC(ultra_io, "SMC Ultra/EtherEZ MCA I/O base address(es)");
+MODULE_PARM_DESC(ultra_irq, "SMC Ultra/EtherEZ MCA IRQ number(s)");
+
+static short smc_mca_adapter_ids[] __initdata = {
+        0x61c8,
+        0x61c9,
+        0x6fc0,
+        0x6fc1,
+        0x6fc2,
+        0xefd4,
+        0xefd5,
+        0xefe5,
+        0x0000
+};
+
+static char *smc_mca_adapter_names[] __initdata = {
+        "SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)",
+        "SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)",
+        "WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)",
+        "WD Starcard PLUS/A (WD8003ST/A)",
+        "WD Ethercard PLUS 10T/A (WD8003W/A)",
+        "IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)",
+        "IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)",
+        "IBM PS/2 Adapter/A for Ethernet",
+        NULL
+};
+
+static int ultra_found = 0;
+
+int __init ultramca_probe(struct device *gen_dev)
+{
+        unsigned short ioaddr;
+        struct net_device *dev;
+        unsigned char reg4, num_pages;
+        struct mca_device *mca_dev = to_mca_device(gen_dev);
+        char slot = mca_dev->slot;
+        unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff;
+        int i, rc;
+        int adapter = mca_dev->index;
+        int tbase = 0;
+        int tirq = 0;
+        int base_addr = ultra_io[ultra_found];
+        int irq = ultra_irq[ultra_found];
+
+        if (base_addr || irq) {
+                printk(KERN_INFO "Probing for SMC MCA adapter");
+                if (base_addr) {
+                        printk(KERN_INFO " at I/O address 0x%04x%c",
+                               base_addr, irq ? ' ' : '\n');
+                }
+                if (irq) {
+                        printk(KERN_INFO "using irq %d\n", irq);
+                }
+        }
+
+        tirq = 0;
+        tbase = 0;
+
+        /* If we're trying to match a specificied irq or io address,
+         * we'll reject the adapter found unless it's the one we're
+         * looking for */
+
+        pos2 = mca_device_read_stored_pos(mca_dev, 2); /* io_addr */
+        pos3 = mca_device_read_stored_pos(mca_dev, 3); /* shared mem */
+        pos4 = mca_device_read_stored_pos(mca_dev, 4); /* ROM bios addr range */
+        pos5 = mca_device_read_stored_pos(mca_dev, 5); /* irq, media and RIPL */
+
+        /* Test the following conditions:
+         * - If an irq parameter is supplied, compare it
+         *   with the irq of the adapter we found
+         * - If a base_addr paramater is given, compare it
+         *   with the base_addr of the adapter we found
+         * - Check that the irq and the base_addr of the
+         *   adapter we found is not already in use by
+         *   this driver
+         */
+
+        switch (mca_dev->index) {
+        case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
+        case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
+        case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
+        case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
+                {
+                        tbase = addr_table[(pos2 & 0xf0) >> 4].base_addr;
+                        tirq  = irq_table[(pos5 & 0xc) >> 2].new_irq;
+                        break;
+                }
+        case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
+        case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
+        case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
+        case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
+                {
+                        tbase = ((pos2 & 0x0fe) * 0x10);
+                        tirq  = irq_table[(pos5 & 3)].old_irq;
+                        break;
+                }
+        }
+        
+        if(!tirq || !tbase 
+           || (irq && irq != tirq) 
+           || (base_addr && tbase != base_addr))
+                /* FIXME: we're trying to force the ordering of the
+                 * devices here, there should be a way of getting this
+                 * to happen */
+                return -ENXIO;
+
+        /* Adapter found. */
+        dev  = alloc_ei_netdev();
+        if(!dev)
+                return -ENODEV;
+
+        SET_MODULE_OWNER(dev);
+        SET_NETDEV_DEV(dev, gen_dev);
+        mca_device_set_name(mca_dev, smc_mca_adapter_names[adapter]);
+        mca_device_set_claim(mca_dev, 1);
+
+        printk(KERN_INFO "smc_mca: %s found in slot %d\n",
+                       smc_mca_adapter_names[adapter], slot + 1);
+
+        ultra_found++;
+
+        dev->base_addr = ioaddr = mca_device_transform_ioport(mca_dev, tbase);
+        dev->irq       = mca_device_transform_irq(mca_dev, tirq);
+        dev->mem_start = 0;
+        num_pages      = 40;
+
+        switch (adapter) {      /* card-# in const array above [hs] */
+                case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A:
+                case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A:
+                {
+                        for (i = 0; i < 16; i++) { /* taking 16 counts
+                                                    * up to 15 [hs] */
+                                if (mem_table[i].mem_index == (pos3 & ~MEM_MASK)) {
+                                        dev->mem_start = (unsigned long)
+                                          mca_device_transform_memory(mca_dev, (void *)mem_table[i].mem_start);
+                                        num_pages = mem_table[i].num_pages;
+                                }
+                        }
+                        break;
+                }
+                case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A:
+                case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A:
+                case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A:
+                case _efe5_IBM_PS2_Adapter_A_for_Ethernet:
+                {
+                        dev->mem_start = (unsigned long)
+                          mca_device_transform_memory(mca_dev, (void *)((pos3 & 0xfc) * 0x1000));
+                        num_pages = 0x40;
+                        break;
+                }
+                case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A:
+                case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A:
+                {
+                        /* courtesy of gamera@quartz.ocn.ne.jp, pos3 indicates
+                         * the index of the 0x2000 step.
+                         * beware different number of pages [hs]
+                         */
+                        dev->mem_start = (unsigned long) 
+                          mca_device_transform_memory(mca_dev, (void *)(0xc0000 + (0x2000 * (pos3 & 0xf))));
+                        num_pages = 0x20 + (2 * (pos3 & 0x10));
+                        break;
+                }
+        }
+
+        /* sanity check, shouldn't happen */
+        if (dev->mem_start == 0) {
+                rc = -ENODEV;
+                goto err_unclaim;
+        }
+
+        if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) {
+                rc = -ENODEV;
+                goto err_unclaim;
+        }
+
+        reg4 = inb(ioaddr + 4) & 0x7f;
+        outb(reg4, ioaddr + 4);
+
+        printk(KERN_INFO "smc_mca[%d]: Parameters: %#3x,", slot + 1, ioaddr);
+
+        for (i = 0; i < 6; i++)
+                printk(" %2.2X", dev->dev_addr[i] = inb(ioaddr + 8 + i));
+
+        /* Switch from the station address to the alternate register set
+         * and read the useful registers there.
+         */
+
+        outb(0x80 | reg4, ioaddr + 4);
+
+        /* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot.
+         */
+
+        outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
+
+        /* 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);
+
+        gen_dev->driver_data = dev;
+
+        /* The 8390 isn't at the base address, so fake the offset
+         */
+
+        dev->base_addr = ioaddr + ULTRA_NIC_OFFSET;
+
+        ei_status.name = "SMC Ultra MCA";
+        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) {
+                rc = -ENOMEM;
+                goto err_release_region;
+        }
+
+        dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG) * 256;
+
+        printk(", IRQ %d memory %#lx-%#lx.\n",
+        dev->irq, dev->mem_start, dev->mem_end - 1);
+
+        ei_status.reset_8390 = &ultramca_reset_8390;
+        ei_status.block_input = &ultramca_block_input;
+        ei_status.block_output = &ultramca_block_output;
+        ei_status.get_8390_hdr = &ultramca_get_8390_hdr;
+
+        ei_status.priv = slot;
+
+        dev->open = &ultramca_open;
+        dev->stop = &ultramca_close_card;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+        dev->poll_controller = ei_poll;
+#endif
+
+        NS8390_init(dev, 0);
+
+        rc = register_netdev(dev);
+        if (rc)
+                goto err_unmap;
+
+        return 0;
+
+err_unmap:
+        iounmap(ei_status.mem);
+err_release_region:
+        release_region(ioaddr, ULTRA_IO_EXTENT);
+err_unclaim:
+        mca_device_set_claim(mca_dev, 0);
+        free_netdev(dev);
+        return rc;
+}
+
+static int ultramca_open(struct net_device *dev)
+{
+        int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
+        int retval;
+
+        if ((retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev)))
+                return retval;
+
+        outb(ULTRA_MEMENB, ioaddr); /* Enable memory */
+        outb(0x80, ioaddr + 5);     /* ??? */
+        outb(0x01, ioaddr + 6);     /* Enable interrupts and memory. */
+        outb(0x04, ioaddr + 5);     /* ??? */
+
+        /* 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 ultramca_reset_8390(struct net_device *dev)
+{
+        int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
+
+        outb(ULTRA_RESET, ioaddr);
+        if (ei_debug > 1)
+                printk("resetting Ultra, t=%ld...", jiffies);
+        ei_status.txing = 0;
+
+        outb(0x80, ioaddr + 5);     /* ??? */
+        outb(0x01, ioaddr + 6);     /* Enable interrupts and memory. */
+
+        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 ultramca_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);
+
+#ifdef notdef
+        /* Officially this is what we are doing, but the readl() is faster */
+        memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
+#else
+        ((unsigned int*)hdr)[0] = readl(hdr_start);
+#endif
+}
+
+/* Block input and output are easy on shared memory ethercards, the only
+ * complication is when the ring buffer wraps.
+ */
+
+static void ultramca_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 * 256;
+
+        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 {
+                /* Packet is in one chunk -- we can copy + cksum. */
+                eth_io_copy_and_sum(skb, xfer_start, count, 0);
+        }
+
+}
+
+static void ultramca_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);
+
+        memcpy_toio(shmem, buf, count);
+}
+
+static int ultramca_close_card(struct net_device *dev)
+{
+        int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
+
+        netif_stop_queue(dev);
+        
+        if (ei_debug > 1)
+                printk("%s: Shutting down ethercard.\n", dev->name);
+
+        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;
+}
+
+static int ultramca_remove(struct device *gen_dev)
+{
+        struct mca_device *mca_dev = to_mca_device(gen_dev);
+        struct net_device *dev = (struct net_device *)gen_dev->driver_data;
+
+        if (dev) {
+                /* NB: ultra_close_card() does free_irq */
+                int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET;
+
+                unregister_netdev(dev);
+                mca_device_set_claim(mca_dev, 0);
+                release_region(ioaddr, ULTRA_IO_EXTENT);
+                iounmap(ei_status.mem);
+                free_netdev(dev);
+        }
+        return 0;
+}
+
+
+static struct mca_driver ultra_driver = {
+        .id_table = smc_mca_adapter_ids,
+        .driver = {
+                .name = "smc-mca",
+                .bus = &mca_bus_type,
+                .probe = ultramca_probe,
+                .remove = ultramca_remove,
+        }
+};
+
+static int __init ultramca_init_module(void)
+{
+        if(!MCA_bus)
+                return -ENXIO;
+
+        mca_register_driver(&ultra_driver);
+
+        return ultra_found ? 0 : -ENXIO;
+}
+
+static void __exit ultramca_cleanup_module(void)
+{
+        mca_unregister_driver(&ultra_driver);
+}
+module_init(ultramca_init_module);
+module_exit(ultramca_cleanup_module);
+