diff options
Diffstat (limited to 'drivers/net/ethernet/8390/ne3210.c')
| -rw-r--r-- | drivers/net/ethernet/8390/ne3210.c | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/drivers/net/ethernet/8390/ne3210.c b/drivers/net/ethernet/8390/ne3210.c new file mode 100644 index 000000000000..243ed2aee88e --- /dev/null +++ b/drivers/net/ethernet/8390/ne3210.c @@ -0,0 +1,347 @@ +/* + ne3210.c + + Linux driver for Novell NE3210 EISA Network Adapter + + Copyright (C) 1998, 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) Based upon my other EISA 8390 drivers (lne390, es3210, smc-ultra32) + 2) The existing myriad of other Linux 8390 drivers by Donald Becker. + 3) Info for getting IRQ and sh-mem gleaned from the EISA cfg file + + The NE3210 is an EISA shared memory NS8390 implementation. Shared + memory address > 1MB should work with this driver. + + Note that the .cfg file (3/11/93, v1.0) has AUI and BNC switched + around (or perhaps there are some defective/backwards cards ???) + + This driver WILL NOT WORK FOR THE NE3200 - it is completely different + and does not use an 8390 at all. + + Updated to EISA probing API 5/2003 by Marc Zyngier. +*/ + +#include <linux/module.h> +#include <linux/eisa.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/mm.h> + +#include <asm/io.h> +#include <asm/system.h> + +#include "8390.h" + +#define DRV_NAME "ne3210" + +static void ne3210_reset_8390(struct net_device *dev); + +static void ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page); +static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset); +static void ne3210_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page); + +#define NE3210_START_PG 0x00 /* First page of TX buffer */ +#define NE3210_STOP_PG 0x80 /* Last page +1 of RX ring */ + +#define NE3210_IO_EXTENT 0x20 +#define NE3210_SA_PROM 0x16 /* Start of e'net addr. */ +#define NE3210_RESET_PORT 0xc84 +#define NE3210_NIC_OFFSET 0x00 /* Hello, the 8390 is *here* */ + +#define NE3210_ADDR0 0x00 /* 3 byte vendor prefix */ +#define NE3210_ADDR1 0x00 +#define NE3210_ADDR2 0x1b + +#define NE3210_CFG1 0xc84 /* NB: 0xc84 is also "reset" port. */ +#define NE3210_CFG2 0xc90 +#define NE3210_CFG_EXTENT (NE3210_CFG2 - NE3210_CFG1 + 1) + +/* + * You can OR any of the following bits together and assign it + * to NE3210_DEBUG to get verbose driver info during operation. + * Currently only the probe one is implemented. + */ + +#define NE3210_D_PROBE 0x01 +#define NE3210_D_RX_PKT 0x02 +#define NE3210_D_TX_PKT 0x04 +#define NE3210_D_IRQ 0x08 + +#define NE3210_DEBUG 0x0 + +static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3}; +static unsigned int shmem_map[] __initdata = {0xff0, 0xfe0, 0xfff0, 0xd8, 0xffe0, 0xffc0, 0xd0, 0x0}; +static const char *ifmap[] __initdata = {"UTP", "?", "BNC", "AUI"}; +static int ifmap_val[] __initdata = { + IF_PORT_10BASET, + IF_PORT_UNKNOWN, + IF_PORT_10BASE2, + IF_PORT_AUI, +}; + +static int __init ne3210_eisa_probe (struct device *device) +{ + unsigned long ioaddr, phys_mem; + int i, retval, port_index; + struct eisa_device *edev = to_eisa_device (device); + struct net_device *dev; + + /* Allocate dev->priv and fill in 8390 specific dev fields. */ + if (!(dev = alloc_ei_netdev ())) { + printk ("ne3210.c: unable to allocate memory for dev!\n"); + return -ENOMEM; + } + + SET_NETDEV_DEV(dev, device); + dev_set_drvdata(device, dev); + ioaddr = edev->base_addr; + + if (!request_region(ioaddr, NE3210_IO_EXTENT, DRV_NAME)) { + retval = -EBUSY; + goto out; + } + + if (!request_region(ioaddr + NE3210_CFG1, + NE3210_CFG_EXTENT, DRV_NAME)) { + retval = -EBUSY; + goto out1; + } + +#if NE3210_DEBUG & NE3210_D_PROBE + printk("ne3210-debug: probe at %#x, ID %s\n", ioaddr, edev->id.sig); + printk("ne3210-debug: config regs: %#x %#x\n", + inb(ioaddr + NE3210_CFG1), inb(ioaddr + NE3210_CFG2)); +#endif + + port_index = inb(ioaddr + NE3210_CFG2) >> 6; + for(i = 0; i < ETHER_ADDR_LEN; i++) + dev->dev_addr[i] = inb(ioaddr + NE3210_SA_PROM + i); + printk("ne3210.c: NE3210 in EISA slot %d, media: %s, addr: %pM.\n", + edev->slot, ifmap[port_index], dev->dev_addr); + + /* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */ + dev->irq = irq_map[(inb(ioaddr + NE3210_CFG2) >> 3) & 0x07]; + printk("ne3210.c: using IRQ %d, ", dev->irq); + + retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev); + if (retval) { + printk (" unable to get IRQ %d.\n", dev->irq); + goto out2; + } + + phys_mem = shmem_map[inb(ioaddr + NE3210_CFG2) & 0x07] * 0x1000; + + /* + BEWARE!! Some dain-bramaged EISA SCUs will allow you to put + the card mem within the region covered by `normal' RAM !!! + */ + if (phys_mem > 1024*1024) { /* phys addr > 1MB */ + if (phys_mem < virt_to_phys(high_memory)) { + printk(KERN_CRIT "ne3210.c: Card RAM overlaps with normal memory!!!\n"); + printk(KERN_CRIT "ne3210.c: Use EISA SCU to set card memory below 1MB,\n"); + printk(KERN_CRIT "ne3210.c: or to an address above 0x%llx.\n", + (u64)virt_to_phys(high_memory)); + printk(KERN_CRIT "ne3210.c: Driver NOT installed.\n"); + retval = -EINVAL; + goto out3; + } + } + + if (!request_mem_region (phys_mem, NE3210_STOP_PG*0x100, DRV_NAME)) { + printk ("ne3210.c: Unable to request shared memory at physical address %#lx\n", + phys_mem); + goto out3; + } + + printk("%dkB memory at physical address %#lx\n", + NE3210_STOP_PG/4, phys_mem); + + ei_status.mem = ioremap(phys_mem, NE3210_STOP_PG*0x100); + if (!ei_status.mem) { + printk(KERN_ERR "ne3210.c: Unable to remap card memory !!\n"); + printk(KERN_ERR "ne3210.c: Driver NOT installed.\n"); + retval = -EAGAIN; + goto out4; + } + printk("ne3210.c: remapped %dkB card memory to virtual address %p\n", + NE3210_STOP_PG/4, ei_status.mem); + dev->mem_start = (unsigned long)ei_status.mem; + dev->mem_end = dev->mem_start + (NE3210_STOP_PG - NE3210_START_PG)*256; + + /* The 8390 offset is zero for the NE3210 */ + dev->base_addr = ioaddr; + + ei_status.name = "NE3210"; + ei_status.tx_start_page = NE3210_START_PG; + ei_status.rx_start_page = NE3210_START_PG + TX_PAGES; + ei_status.stop_page = NE3210_STOP_PG; + ei_status.word16 = 1; + ei_status.priv = phys_mem; + + if (ei_debug > 0) + printk("ne3210 loaded.\n"); + + ei_status.reset_8390 = &ne3210_reset_8390; + ei_status.block_input = &ne3210_block_input; + ei_status.block_output = &ne3210_block_output; + ei_status.get_8390_hdr = &ne3210_get_8390_hdr; + + dev->netdev_ops = &ei_netdev_ops; + + dev->if_port = ifmap_val[port_index]; + + if ((retval = register_netdev (dev))) + goto out5; + + NS8390_init(dev, 0); + return 0; + + out5: + iounmap(ei_status.mem); + out4: + release_mem_region (phys_mem, NE3210_STOP_PG*0x100); + out3: + free_irq (dev->irq, dev); + out2: + release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT); + out1: + release_region (ioaddr, NE3210_IO_EXTENT); + out: + free_netdev (dev); + + return retval; +} + +static int __devexit ne3210_eisa_remove (struct device *device) +{ + struct net_device *dev = dev_get_drvdata(device); + unsigned long ioaddr = to_eisa_device (device)->base_addr; + + unregister_netdev (dev); + iounmap(ei_status.mem); + release_mem_region (ei_status.priv, NE3210_STOP_PG*0x100); + free_irq (dev->irq, dev); + release_region (ioaddr + NE3210_CFG1, NE3210_CFG_EXTENT); + release_region (ioaddr, NE3210_IO_EXTENT); + free_netdev (dev); + + return 0; +} + +/* + * Reset by toggling the "Board Enable" bits (bit 2 and 0). + */ + +static void ne3210_reset_8390(struct net_device *dev) +{ + unsigned short ioaddr = dev->base_addr; + + outb(0x04, ioaddr + NE3210_RESET_PORT); + if (ei_debug > 1) printk("%s: resetting the NE3210...", dev->name); + + mdelay(2); + + ei_status.txing = 0; + outb(0x01, ioaddr + NE3210_RESET_PORT); + if (ei_debug > 1) printk("reset done\n"); +} + +/* + * 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 +ne3210_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) +{ + void __iomem *hdr_start = ei_status.mem + ((ring_page - NE3210_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 ne3210_get_8390_hdr() above. + */ + +static void ne3210_block_input(struct net_device *dev, int count, struct sk_buff *skb, + int ring_offset) +{ + void __iomem *start = ei_status.mem + ring_offset - NE3210_START_PG*256; + + if (ring_offset + count > NE3210_STOP_PG*256) { + /* Packet wraps over end of ring buffer. */ + int semi_count = NE3210_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. */ + memcpy_fromio(skb->data, start, count); + } +} + +static void ne3210_block_output(struct net_device *dev, int count, + const unsigned char *buf, int start_page) +{ + void __iomem *shmem = ei_status.mem + ((start_page - NE3210_START_PG)<<8); + + count = (count + 3) & ~3; /* Round up to doubleword */ + memcpy_toio(shmem, buf, count); +} + +static struct eisa_device_id ne3210_ids[] = { + { "EGL0101" }, + { "NVL1801" }, + { "" }, +}; +MODULE_DEVICE_TABLE(eisa, ne3210_ids); + +static struct eisa_driver ne3210_eisa_driver = { + .id_table = ne3210_ids, + .driver = { + .name = "ne3210", + .probe = ne3210_eisa_probe, + .remove = __devexit_p (ne3210_eisa_remove), + }, +}; + +MODULE_DESCRIPTION("NE3210 EISA Ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(eisa, ne3210_ids); + +static int ne3210_init(void) +{ + return eisa_driver_register (&ne3210_eisa_driver); +} + +static void ne3210_cleanup(void) +{ + eisa_driver_unregister (&ne3210_eisa_driver); +} + +module_init (ne3210_init); +module_exit (ne3210_cleanup); |