smc-mca.c
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上传日期:2013-02-24
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- /* 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/module.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/errno.h>
- #include <linux/string.h>
- #include <linux/init.h>
- #include <asm/io.h>
- #include <asm/system.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include "8390.h"
- #include "smc-mca.h"
- #include <linux/mca.h>
- int ultramca_probe(struct net_device *dev);
- 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;
- };
- static struct smc_mca_adapters_t smc_mca_adapters[] __initdata = {
- { 0x61c8, "SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)" },
- { 0x61c9, "SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)" },
- { 0x6fc0, "WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)" },
- { 0x6fc1, "WD Starcard PLUS/A (WD8003ST/A)" },
- { 0x6fc2, "WD Ethercard PLUS 10T/A (WD8003W/A)" },
- { 0xefd4, "IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)" },
- { 0xefd5, "IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)" },
- { 0xefe5, "IBM PS/2 Adapter/A for Ethernet" },
- { 0x0000, NULL }
- };
- int __init ultramca_probe(struct net_device *dev)
- {
- unsigned short ioaddr;
- unsigned char reg4, num_pages;
- char slot = -1;
- unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff;
- int i, j;
- int adapter_found = 0;
- int adapter = 0;
- int tbase = 0;
- int tirq = 0;
- int base_addr = dev->base_addr;
- int irq = dev->irq;
- if (!MCA_bus) {
- return -ENODEV;
- }
- SET_MODULE_OWNER(dev);
- 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 %dn", irq);
- }
- }
- /* proper multicard detection by ZP Gu (zpg@castle.net) */
- for (j = 0; (smc_mca_adapters[j].name != NULL) && !adapter_found; j++) {
- slot = mca_find_unused_adapter(smc_mca_adapters[j].id, 0);
- while((slot != MCA_NOTFOUND) && !adapter_found) {
- 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_read_stored_pos(slot, 2); /* io_addr */
- pos3 = mca_read_stored_pos(slot, 3); /* shared mem */
- pos4 = mca_read_stored_pos(slot, 4); /* ROM bios addr
- * range */
- pos5 = mca_read_stored_pos(slot, 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 (j) { /* j = card-idx (card 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:
- 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)) {
- slot = mca_find_unused_adapter(smc_mca_adapters[j].id, slot + 1);
- } else {
- adapter_found = 1;
- adapter = j;
- }
- }
- }
- if(!adapter_found) {
- return ((base_addr || irq) ? -ENXIO : -ENODEV);
- }
- /* Adapter found. */
- printk(KERN_INFO "%s: %s found in slot %dn",
- dev->name, smc_mca_adapters[adapter].name, slot + 1);
- mca_set_adapter_name(slot, smc_mca_adapters[adapter].name);
- mca_mark_as_used(slot);
- dev->base_addr = ioaddr = tbase;
- dev->irq = 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 = 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 = ((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 = 0xc0000 + (0x2000 * (pos3 & 0xf));
- num_pages = 0x20 + (2 * (pos3 & 0x10));
- break;
- }
- }
- if (dev->mem_start == 0) /* sanity check, shouldn't happen */
- return -ENODEV;
- if (!request_region(ioaddr, ULTRA_IO_EXTENT, dev->name))
- return -EBUSY;
- reg4 = inb(ioaddr + 4) & 0x7f;
- outb(reg4, ioaddr + 4);
- printk(KERN_INFO "%s: Parameters: %#3x,", dev->name, ioaddr);
- for (i = 0; i < 6; i++)
- printk(KERN_INFO " %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);
- /* Allocate dev->priv and fill in 8390 specific dev fields.
- */
- if (ethdev_init(dev)) {
- printk (KERN_INFO ", no memory for dev->priv.n");
- release_region(ioaddr, ULTRA_IO_EXTENT);
- return -ENOMEM;
- }
- /* 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;
- dev->rmem_start = dev->mem_start + TX_PAGES * 256;
- dev->mem_end = dev->rmem_end =
- dev->mem_start + (ei_status.stop_page - START_PG) * 256;
- printk(KERN_INFO ", 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;
- NS8390_init(dev, 0);
- return 0;
- }
- 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 donen");
- 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)
- {
- unsigned long hdr_start = dev->mem_start + ((ring_page - START_PG) << 8);
- #ifdef notdef
- /* Officially this is what we are doing, but the readl() is faster */
- isa_memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
- #else
- ((unsigned int*)hdr)[0] = isa_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)
- {
- unsigned long xfer_start = dev->mem_start + ring_offset - (START_PG << 8);
- if (xfer_start + count > dev->rmem_end) {
- /* We must wrap the input move. */
- int semi_count = dev->rmem_end - xfer_start;
- isa_memcpy_fromio(skb->data, xfer_start, semi_count);
- count -= semi_count;
- isa_memcpy_fromio(skb->data + semi_count, dev->rmem_start, count);
- } else {
- /* Packet is in one chunk -- we can copy + cksum. */
- isa_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)
- {
- unsigned long shmem = dev->mem_start + ((start_page - START_PG) << 8);
- isa_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;
- }
- #ifdef MODULE
- #undef MODULE /* don't want to bother now! */
- #define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */
- static struct net_device dev_ultra[MAX_ULTRAMCA_CARDS];
- static int io[MAX_ULTRAMCA_CARDS];
- static int irq[MAX_ULTRAMCA_CARDS];
- MODULE_LICENSE("GPL");
- MODULE_PARM(io, "1-" __MODULE_STRING(MAX_ULTRAMCA_CARDS) "i");
- MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_ULTRAMCA_CARDS) "i");
- MODULE_PARM_DESC(io, "SMC Ultra/EtherEZ MCA I/O base address(es)");
- MODULE_PARM_DESC(irq, "SMC Ultra/EtherEZ MCA IRQ number(s)");
- int init_module(void)
- {
- int this_dev, found = 0;
- for (this_dev = 0; this_dev < MAX_ULTRAMCA_CARDS; this_dev++) {
- struct net_device *dev = &dev_ultra[this_dev];
- dev->irq = irq[this_dev];
- dev->base_addr = io[this_dev];
- dev->init = ultramca_probe;
- if (register_netdev(dev) != 0) {
- if (found != 0) { /* Got at least one. */
- return 0;
- }
- printk(KERN_NOTICE "smc-mca.c: No SMC Ultra card found (i/o = 0x%x).n", io[this_dev]);
- return -ENXIO;
- }
- found++;
- }
- return 0;
- }
- void cleanup_module(void)
- {
- int this_dev;
- for (this_dev = 0; this_dev < MAX_ULTRAMCA_CARDS; this_dev++) {
- struct net_device *dev = &dev_ultra[this_dev];
- if (dev->priv != NULL) {
- void *priv = dev->priv;
- /* NB: ultra_close_card() does free_irq */
- int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET;
- mca_mark_as_unused(ei_status.priv);
- release_region(ioaddr, ULTRA_IO_EXTENT);
- unregister_netdev(dev);
- kfree(priv);
- }
- }
- }
- #endif /* MODULE */
- /*
- * Local variables:
- * compile-command: "gcc -D__KERNEL__ -Wall -O6 -I/usr/src/linux/net/inet -c smc-mca.c"
- * version-control: t
- * kept-new-versions: 5
- * c-indent-level: 8
- * tab-width: 8
- * End:
- */