diff options
Diffstat (limited to 'drivers/net/zorro8390.c')
| -rw-r--r-- | drivers/net/zorro8390.c | 439 |
1 files changed, 439 insertions, 0 deletions
diff --git a/drivers/net/zorro8390.c b/drivers/net/zorro8390.c new file mode 100644 index 00000000000..8ab6e12153b --- /dev/null +++ b/drivers/net/zorro8390.c @@ -0,0 +1,439 @@ +/* + * Amiga Linux/m68k and Linux/PPC Zorro NS8390 Ethernet Driver + * + * (C) Copyright 1998-2000 by some Elitist 680x0 Users(TM) + * + * --------------------------------------------------------------------------- + * + * This program is based on all the other NE2000 drivers for Linux + * + * --------------------------------------------------------------------------- + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of the Linux + * distribution for more details. + * + * --------------------------------------------------------------------------- + * + * The Ariadne II and X-Surf are Zorro-II boards containing Realtek RTL8019AS + * Ethernet Controllers. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/zorro.h> + +#include <asm/system.h> +#include <asm/irq.h> +#include <asm/amigaints.h> +#include <asm/amigahw.h> + +#include "8390.h" + + +#define DRV_NAME "zorro8390" + +#define NE_BASE (dev->base_addr) +#define NE_CMD (0x00*2) +#define NE_DATAPORT (0x10*2) /* NatSemi-defined port window offset. */ +#define NE_RESET (0x1f*2) /* Issue a read to reset, a write to clear. */ +#define NE_IO_EXTENT (0x20*2) + +#define NE_EN0_ISR (0x07*2) +#define NE_EN0_DCFG (0x0e*2) + +#define NE_EN0_RSARLO (0x08*2) +#define NE_EN0_RSARHI (0x09*2) +#define NE_EN0_RCNTLO (0x0a*2) +#define NE_EN0_RXCR (0x0c*2) +#define NE_EN0_TXCR (0x0d*2) +#define NE_EN0_RCNTHI (0x0b*2) +#define NE_EN0_IMR (0x0f*2) + +#define NESM_START_PG 0x40 /* First page of TX buffer */ +#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ + + +#define WORDSWAP(a) ((((a)>>8)&0xff) | ((a)<<8)) + + +static struct card_info { + zorro_id id; + const char *name; + unsigned int offset; +} cards[] __devinitdata = { + { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 }, + { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 }, +}; + +static int __devinit zorro8390_init_one(struct zorro_dev *z, + const struct zorro_device_id *ent); +static int __devinit zorro8390_init(struct net_device *dev, + unsigned long board, const char *name, + unsigned long ioaddr); +static int zorro8390_open(struct net_device *dev); +static int zorro8390_close(struct net_device *dev); +static void zorro8390_reset_8390(struct net_device *dev); +static void zorro8390_get_8390_hdr(struct net_device *dev, + struct e8390_pkt_hdr *hdr, int ring_page); +static void zorro8390_block_input(struct net_device *dev, int count, + struct sk_buff *skb, int ring_offset); +static void zorro8390_block_output(struct net_device *dev, const int count, + const unsigned char *buf, + const int start_page); +static void __devexit zorro8390_remove_one(struct zorro_dev *z); + +static struct zorro_device_id zorro8390_zorro_tbl[] __devinitdata = { + { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, }, + { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, }, + { 0 } +}; + +static struct zorro_driver zorro8390_driver = { + .name = "zorro8390", + .id_table = zorro8390_zorro_tbl, + .probe = zorro8390_init_one, + .remove = __devexit_p(zorro8390_remove_one), +}; + +static int __devinit zorro8390_init_one(struct zorro_dev *z, + const struct zorro_device_id *ent) +{ + struct net_device *dev; + unsigned long board, ioaddr; + int err, i; + + for (i = ARRAY_SIZE(cards)-1; i >= 0; i--) + if (z->id == cards[i].id) + break; + board = z->resource.start; + ioaddr = board+cards[i].offset; + dev = alloc_ei_netdev(); + if (!dev) + return -ENOMEM; + SET_MODULE_OWNER(dev); + if (!request_mem_region(ioaddr, NE_IO_EXTENT*2, DRV_NAME)) { + free_netdev(dev); + return -EBUSY; + } + if ((err = zorro8390_init(dev, board, cards[i].name, + ZTWO_VADDR(ioaddr)))) { + release_mem_region(ioaddr, NE_IO_EXTENT*2); + free_netdev(dev); + return err; + } + zorro_set_drvdata(z, dev); + return 0; +} + +static int __devinit zorro8390_init(struct net_device *dev, + unsigned long board, const char *name, + unsigned long ioaddr) +{ + int i; + int err; + unsigned char SA_prom[32]; + int start_page, stop_page; + static u32 zorro8390_offsets[16] = { + 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, + 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, + }; + + /* Reset card. Who knows what dain-bramaged state it was left in. */ + { + unsigned long reset_start_time = jiffies; + + z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET); + + while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0) + if (jiffies - reset_start_time > 2*HZ/100) { + printk(KERN_WARNING " not found (no reset ack).\n"); + return -ENODEV; + } + + z_writeb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */ + } + + /* Read the 16 bytes of station address PROM. + We must first initialize registers, similar to NS8390_init(eifdev, 0). + We can't reliably read the SAPROM address without this. + (I learned the hard way!). */ + { + struct { + u32 value; + u32 offset; + } program_seq[] = { + {E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/ + {0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */ + {0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */ + {0x00, NE_EN0_RCNTHI}, + {0x00, NE_EN0_IMR}, /* Mask completion irq. */ + {0xFF, NE_EN0_ISR}, + {E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */ + {E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode. */ + {32, NE_EN0_RCNTLO}, + {0x00, NE_EN0_RCNTHI}, + {0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */ + {0x00, NE_EN0_RSARHI}, + {E8390_RREAD+E8390_START, NE_CMD}, + }; + for (i = 0; i < sizeof(program_seq)/sizeof(program_seq[0]); i++) { + z_writeb(program_seq[i].value, ioaddr + program_seq[i].offset); + } + } + for (i = 0; i < 16; i++) { + SA_prom[i] = z_readb(ioaddr + NE_DATAPORT); + (void)z_readb(ioaddr + NE_DATAPORT); + } + + /* We must set the 8390 for word mode. */ + z_writeb(0x49, ioaddr + NE_EN0_DCFG); + start_page = NESM_START_PG; + stop_page = NESM_STOP_PG; + + dev->base_addr = ioaddr; + dev->irq = IRQ_AMIGA_PORTS; + + /* Install the Interrupt handler */ + i = request_irq(IRQ_AMIGA_PORTS, ei_interrupt, SA_SHIRQ, DRV_NAME, dev); + if (i) return i; + + for(i = 0; i < ETHER_ADDR_LEN; i++) { +#ifdef DEBUG + printk(" %2.2x", SA_prom[i]); +#endif + dev->dev_addr[i] = SA_prom[i]; + } + + ei_status.name = name; + ei_status.tx_start_page = start_page; + ei_status.stop_page = stop_page; + ei_status.word16 = 1; + + ei_status.rx_start_page = start_page + TX_PAGES; + + ei_status.reset_8390 = &zorro8390_reset_8390; + ei_status.block_input = &zorro8390_block_input; + ei_status.block_output = &zorro8390_block_output; + ei_status.get_8390_hdr = &zorro8390_get_8390_hdr; + ei_status.reg_offset = zorro8390_offsets; + dev->open = &zorro8390_open; + dev->stop = &zorro8390_close; +#ifdef CONFIG_NET_POLL_CONTROLLER + dev->poll_controller = ei_poll; +#endif + + NS8390_init(dev, 0); + err = register_netdev(dev); + if (err) { + free_irq(IRQ_AMIGA_PORTS, dev); + return err; + } + + printk(KERN_INFO "%s: %s at 0x%08lx, Ethernet Address " + "%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, name, board, + dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], + dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); + + return 0; +} + +static int zorro8390_open(struct net_device *dev) +{ + ei_open(dev); + return 0; +} + +static int zorro8390_close(struct net_device *dev) +{ + if (ei_debug > 1) + printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name); + ei_close(dev); + return 0; +} + +/* Hard reset the card. This used to pause for the same period that a + 8390 reset command required, but that shouldn't be necessary. */ +static void zorro8390_reset_8390(struct net_device *dev) +{ + unsigned long reset_start_time = jiffies; + + if (ei_debug > 1) + printk(KERN_DEBUG "resetting the 8390 t=%ld...\n", jiffies); + + z_writeb(z_readb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); + + ei_status.txing = 0; + ei_status.dmaing = 0; + + /* This check _should_not_ be necessary, omit eventually. */ + while ((z_readb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0) + if (jiffies - reset_start_time > 2*HZ/100) { + printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n", + dev->name); + break; + } + z_writeb(ENISR_RESET, NE_BASE + NE_EN0_ISR); /* Ack intr. */ +} + +/* 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 zorro8390_get_8390_hdr(struct net_device *dev, + struct e8390_pkt_hdr *hdr, int ring_page) +{ + int nic_base = dev->base_addr; + int cnt; + short *ptrs; + + /* This *shouldn't* happen. If it does, it's the last thing you'll see */ + if (ei_status.dmaing) { + printk(KERN_ERR "%s: DMAing conflict in ne_get_8390_hdr " + "[DMAstat:%d][irqlock:%d].\n", dev->name, ei_status.dmaing, + ei_status.irqlock); + return; + } + + ei_status.dmaing |= 0x01; + z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); + z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); + z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO); + z_writeb(0, nic_base + NE_EN0_RCNTHI); + z_writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */ + z_writeb(ring_page, nic_base + NE_EN0_RSARHI); + z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD); + + ptrs = (short*)hdr; + for (cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++) + *ptrs++ = z_readw(NE_BASE + NE_DATAPORT); + + z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */ + + hdr->count = WORDSWAP(hdr->count); + + ei_status.dmaing &= ~0x01; +} + +/* Block input and output, similar to the Crynwr packet driver. If you + are porting to a new ethercard, look at the packet driver source for hints. + The NEx000 doesn't share the on-board packet memory -- you have to put + the packet out through the "remote DMA" dataport using z_writeb. */ + +static void zorro8390_block_input(struct net_device *dev, int count, + struct sk_buff *skb, int ring_offset) +{ + int nic_base = dev->base_addr; + char *buf = skb->data; + short *ptrs; + int cnt; + + /* This *shouldn't* happen. If it does, it's the last thing you'll see */ + if (ei_status.dmaing) { + printk(KERN_ERR "%s: DMAing conflict in ne_block_input " + "[DMAstat:%d][irqlock:%d].\n", + dev->name, ei_status.dmaing, ei_status.irqlock); + return; + } + ei_status.dmaing |= 0x01; + z_writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); + z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); + z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO); + z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI); + z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO); + z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI); + z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD); + ptrs = (short*)buf; + for (cnt = 0; cnt < (count>>1); cnt++) + *ptrs++ = z_readw(NE_BASE + NE_DATAPORT); + if (count & 0x01) + buf[count-1] = z_readb(NE_BASE + NE_DATAPORT); + + z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */ + ei_status.dmaing &= ~0x01; +} + +static void zorro8390_block_output(struct net_device *dev, int count, + const unsigned char *buf, + const int start_page) +{ + int nic_base = NE_BASE; + unsigned long dma_start; + short *ptrs; + int cnt; + + /* Round the count up for word writes. Do we need to do this? + What effect will an odd byte count have on the 8390? + I should check someday. */ + if (count & 0x01) + count++; + + /* This *shouldn't* happen. If it does, it's the last thing you'll see */ + if (ei_status.dmaing) { + printk(KERN_ERR "%s: DMAing conflict in ne_block_output." + "[DMAstat:%d][irqlock:%d]\n", dev->name, ei_status.dmaing, + ei_status.irqlock); + return; + } + ei_status.dmaing |= 0x01; + /* We should already be in page 0, but to be safe... */ + z_writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); + + z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); + + /* Now the normal output. */ + z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO); + z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI); + z_writeb(0x00, nic_base + NE_EN0_RSARLO); + z_writeb(start_page, nic_base + NE_EN0_RSARHI); + + z_writeb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); + ptrs = (short*)buf; + for (cnt = 0; cnt < count>>1; cnt++) + z_writew(*ptrs++, NE_BASE+NE_DATAPORT); + + dma_start = jiffies; + + while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0) + if (jiffies - dma_start > 2*HZ/100) { /* 20ms */ + printk(KERN_ERR "%s: timeout waiting for Tx RDC.\n", + dev->name); + zorro8390_reset_8390(dev); + NS8390_init(dev,1); + break; + } + + z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */ + ei_status.dmaing &= ~0x01; + return; +} + +static void __devexit zorro8390_remove_one(struct zorro_dev *z) +{ + struct net_device *dev = zorro_get_drvdata(z); + + unregister_netdev(dev); + free_irq(IRQ_AMIGA_PORTS, dev); + release_mem_region(ZTWO_PADDR(dev->base_addr), NE_IO_EXTENT*2); + free_netdev(dev); +} + +static int __init zorro8390_init_module(void) +{ + return zorro_module_init(&zorro8390_driver); +} + +static void __exit zorro8390_cleanup_module(void) +{ + zorro_unregister_driver(&zorro8390_driver); +} + +module_init(zorro8390_init_module); +module_exit(zorro8390_cleanup_module); + +MODULE_LICENSE("GPL"); |