1da177e4c3
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!
256 lines
7 KiB
C
256 lines
7 KiB
C
/* New Hydra driver using generic 8390 core */
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/* Based on old hydra driver by Topi Kanerva (topi@susanna.oulu.fi) */
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/* This file is subject to the terms and conditions of the GNU General */
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/* Public License. See the file COPYING in the main directory of the */
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/* Linux distribution for more details. */
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/* Peter De Schrijver (p2@mind.be) */
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/* Oldenburg 2000 */
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/* The Amiganet is a Zorro-II board made by Hydra Systems. It contains a */
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/* NS8390 NIC (network interface controller) clone, 16 or 64K on-board RAM */
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/* and 10BASE-2 (thin coax) and AUI connectors. */
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/init.h>
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#include <linux/bitops.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/amigaints.h>
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#include <asm/amigahw.h>
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#include <linux/zorro.h>
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#include "8390.h"
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#define NE_EN0_DCFG (0x0e*2)
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#define NESM_START_PG 0x0 /* First page of TX buffer */
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#define NESM_STOP_PG 0x40 /* Last page +1 of RX ring */
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#define HYDRA_NIC_BASE 0xffe1
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#define HYDRA_ADDRPROM 0xffc0
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#define HYDRA_VERSION "v3.0alpha"
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#define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8))
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static int __devinit hydra_init_one(struct zorro_dev *z,
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const struct zorro_device_id *ent);
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static int __devinit hydra_init(struct zorro_dev *z);
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static int hydra_open(struct net_device *dev);
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static int hydra_close(struct net_device *dev);
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static void hydra_reset_8390(struct net_device *dev);
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static void hydra_get_8390_hdr(struct net_device *dev,
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struct e8390_pkt_hdr *hdr, int ring_page);
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static void hydra_block_input(struct net_device *dev, int count,
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struct sk_buff *skb, int ring_offset);
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static void hydra_block_output(struct net_device *dev, int count,
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const unsigned char *buf, int start_page);
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static void __devexit hydra_remove_one(struct zorro_dev *z);
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static struct zorro_device_id hydra_zorro_tbl[] __devinitdata = {
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{ ZORRO_PROD_HYDRA_SYSTEMS_AMIGANET },
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{ 0 }
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};
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static struct zorro_driver hydra_driver = {
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.name = "hydra",
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.id_table = hydra_zorro_tbl,
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.probe = hydra_init_one,
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.remove = __devexit_p(hydra_remove_one),
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};
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static int __devinit hydra_init_one(struct zorro_dev *z,
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const struct zorro_device_id *ent)
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{
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int err;
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if (!request_mem_region(z->resource.start, 0x10000, "Hydra"))
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return -EBUSY;
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if ((err = hydra_init(z))) {
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release_mem_region(z->resource.start, 0x10000);
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return -EBUSY;
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}
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return 0;
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}
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static int __devinit hydra_init(struct zorro_dev *z)
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{
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struct net_device *dev;
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unsigned long board = ZTWO_VADDR(z->resource.start);
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unsigned long ioaddr = board+HYDRA_NIC_BASE;
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const char name[] = "NE2000";
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int start_page, stop_page;
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int j;
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int err;
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static u32 hydra_offsets[16] = {
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0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
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0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
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};
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dev = alloc_ei_netdev();
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if (!dev)
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return -ENOMEM;
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SET_MODULE_OWNER(dev);
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for(j = 0; j < ETHER_ADDR_LEN; j++)
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dev->dev_addr[j] = *((u8 *)(board + HYDRA_ADDRPROM + 2*j));
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/* We must set the 8390 for word mode. */
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z_writeb(0x4b, ioaddr + NE_EN0_DCFG);
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start_page = NESM_START_PG;
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stop_page = NESM_STOP_PG;
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dev->base_addr = ioaddr;
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dev->irq = IRQ_AMIGA_PORTS;
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/* Install the Interrupt handler */
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if (request_irq(IRQ_AMIGA_PORTS, ei_interrupt, SA_SHIRQ, "Hydra Ethernet",
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dev)) {
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free_netdev(dev);
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return -EAGAIN;
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}
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ei_status.name = name;
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ei_status.tx_start_page = start_page;
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ei_status.stop_page = stop_page;
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ei_status.word16 = 1;
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ei_status.bigendian = 1;
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ei_status.rx_start_page = start_page + TX_PAGES;
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ei_status.reset_8390 = &hydra_reset_8390;
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ei_status.block_input = &hydra_block_input;
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ei_status.block_output = &hydra_block_output;
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ei_status.get_8390_hdr = &hydra_get_8390_hdr;
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ei_status.reg_offset = hydra_offsets;
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dev->open = &hydra_open;
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dev->stop = &hydra_close;
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#ifdef CONFIG_NET_POLL_CONTROLLER
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dev->poll_controller = ei_poll;
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#endif
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NS8390_init(dev, 0);
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err = register_netdev(dev);
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if (err) {
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free_irq(IRQ_AMIGA_PORTS, dev);
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free_netdev(dev);
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return err;
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}
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zorro_set_drvdata(z, dev);
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printk(KERN_INFO "%s: Hydra at 0x%08lx, address "
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"%02x:%02x:%02x:%02x:%02x:%02x (hydra.c " HYDRA_VERSION ")\n",
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dev->name, z->resource.start, dev->dev_addr[0], dev->dev_addr[1],
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dev->dev_addr[2], dev->dev_addr[3], dev->dev_addr[4],
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dev->dev_addr[5]);
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return 0;
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}
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static int hydra_open(struct net_device *dev)
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{
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ei_open(dev);
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return 0;
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}
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static int hydra_close(struct net_device *dev)
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{
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if (ei_debug > 1)
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printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
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ei_close(dev);
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return 0;
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}
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static void hydra_reset_8390(struct net_device *dev)
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{
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printk(KERN_INFO "Hydra hw reset not there\n");
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}
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static void hydra_get_8390_hdr(struct net_device *dev,
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struct e8390_pkt_hdr *hdr, int ring_page)
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{
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int nic_base = dev->base_addr;
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short *ptrs;
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unsigned long hdr_start= (nic_base-HYDRA_NIC_BASE) +
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((ring_page - NESM_START_PG)<<8);
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ptrs = (short *)hdr;
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*(ptrs++) = z_readw(hdr_start);
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*((short *)hdr) = WORDSWAP(*((short *)hdr));
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hdr_start += 2;
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*(ptrs++) = z_readw(hdr_start);
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*((short *)hdr+1) = WORDSWAP(*((short *)hdr+1));
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}
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static void hydra_block_input(struct net_device *dev, int count,
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struct sk_buff *skb, int ring_offset)
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{
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unsigned long nic_base = dev->base_addr;
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unsigned long mem_base = nic_base - HYDRA_NIC_BASE;
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unsigned long xfer_start = mem_base + ring_offset - (NESM_START_PG<<8);
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if (count&1)
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count++;
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if (xfer_start+count > mem_base + (NESM_STOP_PG<<8)) {
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int semi_count = (mem_base + (NESM_STOP_PG<<8)) - xfer_start;
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z_memcpy_fromio(skb->data,xfer_start,semi_count);
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count -= semi_count;
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z_memcpy_fromio(skb->data+semi_count, mem_base, count);
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} else
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z_memcpy_fromio(skb->data, xfer_start,count);
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}
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static void hydra_block_output(struct net_device *dev, int count,
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const unsigned char *buf, int start_page)
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{
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unsigned long nic_base = dev->base_addr;
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unsigned long mem_base = nic_base - HYDRA_NIC_BASE;
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if (count&1)
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count++;
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z_memcpy_toio(mem_base+((start_page - NESM_START_PG)<<8), buf, count);
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}
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static void __devexit hydra_remove_one(struct zorro_dev *z)
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{
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struct net_device *dev = zorro_get_drvdata(z);
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unregister_netdev(dev);
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free_irq(IRQ_AMIGA_PORTS, dev);
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release_mem_region(ZTWO_PADDR(dev->base_addr)-HYDRA_NIC_BASE, 0x10000);
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free_netdev(dev);
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}
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static int __init hydra_init_module(void)
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{
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return zorro_module_init(&hydra_driver);
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}
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static void __exit hydra_cleanup_module(void)
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{
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zorro_unregister_driver(&hydra_driver);
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}
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module_init(hydra_init_module);
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module_exit(hydra_cleanup_module);
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MODULE_LICENSE("GPL");
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