diff options
Diffstat (limited to 'drivers/net/smc-ultra32.c')
| -rw-r--r-- | drivers/net/smc-ultra32.c | 464 |
1 files changed, 0 insertions, 464 deletions
diff --git a/drivers/net/smc-ultra32.c b/drivers/net/smc-ultra32.c deleted file mode 100644 index e459c3b2510..00000000000 --- a/drivers/net/smc-ultra32.c +++ /dev/null @@ -1,464 +0,0 @@ -/* smc-ultra32.c: An SMC Ultra32 EISA ethernet driver for linux. - -Sources: - - This driver is based on (cloned from) the ISA SMC Ultra driver - written by Donald Becker. Modifications to support the EISA - version of the card by Paul Gortmaker and Leonard N. Zubkoff. - - This software may be used and distributed according to the terms - of the GNU General Public License, incorporated herein by reference. - -Theory of Operation: - - The SMC Ultra32C card uses the SMC 83c790 chip which is also - found on the ISA SMC Ultra cards. It has a shared memory mode of - operation that makes it similar to the ISA version of the card. - The main difference is that the EISA card has 32KB of RAM, but - only an 8KB window into that memory. The EISA card also can be - set for a bus-mastering mode of operation via the ECU, but that - is not (and probably will never be) supported by this driver. - The ECU should be run to enable shared memory and to disable the - bus-mastering feature for use with linux. - - By programming the 8390 to use only 8KB RAM, the modifications - to the ISA driver can be limited to the probe and initialization - code. This allows easy integration of EISA support into the ISA - driver. However, the driver development kit from SMC provided the - register information for sliding the 8KB window, and hence the 8390 - is programmed to use the full 32KB RAM. - - Unfortunately this required code changes outside the probe/init - routines, and thus we decided to separate the EISA driver from - the ISA one. In this way, ISA users don't end up with a larger - driver due to the EISA code, and EISA users don't end up with a - larger driver due to the ISA EtherEZ PIO code. The driver is - similar to the 3c503/16 driver, in that the window must be set - back to the 1st 8KB of space for access to the two 8390 Tx slots. - - In testing, using only 8KB RAM (3 Tx / 5 Rx) didn't appear to - be a limiting factor, since the EISA bus could get packets off - the card fast enough, but having the use of lots of RAM as Rx - space is extra insurance if interrupt latencies become excessive. - -*/ - -static const char *version = "smc-ultra32.c: 06/97 v1.00\n"; - - -#include <linux/module.h> -#include <linux/eisa.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> - -#include <asm/io.h> -#include <asm/system.h> - -#include "8390.h" - -#define DRV_NAME "smc-ultra32" - -static int ultra32_probe1(struct net_device *dev, int ioaddr); -static int ultra32_open(struct net_device *dev); -static void ultra32_reset_8390(struct net_device *dev); -static void ultra32_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, - int ring_page); -static void ultra32_block_input(struct net_device *dev, int count, - struct sk_buff *skb, int ring_offset); -static void ultra32_block_output(struct net_device *dev, int count, - const unsigned char *buf, - const int start_page); -static int ultra32_close(struct net_device *dev); - -#define ULTRA32_CMDREG 0 /* Offset to ASIC command register. */ -#define ULTRA32_RESET 0x80 /* Board reset, in ULTRA32_CMDREG. */ -#define ULTRA32_MEMENB 0x40 /* Enable the shared memory. */ -#define ULTRA32_NIC_OFFSET 16 /* NIC register offset from the base_addr. */ -#define ULTRA32_IO_EXTENT 32 -#define EN0_ERWCNT 0x08 /* Early receive warning count. */ - -/* - * Defines that apply only to the Ultra32 EISA card. Note that - * "smc" = 10011 01101 00011 = 0x4da3, and hence !smc8010.cfg translates - * into an EISA ID of 0x1080A34D - */ -#define ULTRA32_BASE 0xca0 -#define ULTRA32_ID 0x1080a34d -#define ULTRA32_IDPORT (-0x20) /* 0xc80 */ -/* Config regs 1->7 from the EISA !SMC8010.CFG file. */ -#define ULTRA32_CFG1 0x04 /* 0xca4 */ -#define ULTRA32_CFG2 0x05 /* 0xca5 */ -#define ULTRA32_CFG3 (-0x18) /* 0xc88 */ -#define ULTRA32_CFG4 (-0x17) /* 0xc89 */ -#define ULTRA32_CFG5 (-0x16) /* 0xc8a */ -#define ULTRA32_CFG6 (-0x15) /* 0xc8b */ -#define ULTRA32_CFG7 0x0d /* 0xcad */ - -static void cleanup_card(struct net_device *dev) -{ - int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; - /* NB: ultra32_close_card() does free_irq */ - release_region(ioaddr, ULTRA32_IO_EXTENT); - iounmap(ei_status.mem); -} - -/* Probe for the Ultra32. This looks like a 8013 with the station - address PROM at I/O ports <base>+8 to <base>+13, with a checksum - following. -*/ - -struct net_device * __init ultra32_probe(int unit) -{ - struct net_device *dev; - int base; - int irq; - int err = -ENODEV; - - if (!EISA_bus) - return ERR_PTR(-ENODEV); - - dev = alloc_ei_netdev(); - - if (!dev) - return ERR_PTR(-ENOMEM); - - if (unit >= 0) { - sprintf(dev->name, "eth%d", unit); - netdev_boot_setup_check(dev); - } - - irq = dev->irq; - - /* EISA spec allows for up to 16 slots, but 8 is typical. */ - for (base = 0x1000 + ULTRA32_BASE; base < 0x9000; base += 0x1000) { - if (ultra32_probe1(dev, base) == 0) - break; - dev->irq = irq; - } - if (base >= 0x9000) - goto out; - err = register_netdev(dev); - if (err) - goto out1; - return dev; -out1: - cleanup_card(dev); -out: - free_netdev(dev); - return ERR_PTR(err); -} - - -static const struct net_device_ops ultra32_netdev_ops = { - .ndo_open = ultra32_open, - .ndo_stop = ultra32_close, - .ndo_start_xmit = ei_start_xmit, - .ndo_tx_timeout = ei_tx_timeout, - .ndo_get_stats = ei_get_stats, - .ndo_set_multicast_list = ei_set_multicast_list, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, - .ndo_change_mtu = eth_change_mtu, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = ei_poll, -#endif -}; - -static int __init ultra32_probe1(struct net_device *dev, int ioaddr) -{ - int i, edge, media, retval; - int checksum = 0; - const char *model_name; - static unsigned version_printed; - /* Values from various config regs. */ - unsigned char idreg; - unsigned char reg4; - const char *ifmap[] = {"UTP No Link", "", "UTP/AUI", "UTP/BNC"}; - - if (!request_region(ioaddr, ULTRA32_IO_EXTENT, DRV_NAME)) - return -EBUSY; - - if (inb(ioaddr + ULTRA32_IDPORT) == 0xff || - inl(ioaddr + ULTRA32_IDPORT) != ULTRA32_ID) { - retval = -ENODEV; - goto out; - } - - media = inb(ioaddr + ULTRA32_CFG7) & 0x03; - edge = inb(ioaddr + ULTRA32_CFG5) & 0x08; - printk("SMC Ultra32 in EISA Slot %d, Media: %s, %s IRQs.\n", - ioaddr >> 12, ifmap[media], - (edge ? "Edge Triggered" : "Level Sensitive")); - - idreg = inb(ioaddr + 7); - reg4 = inb(ioaddr + 4) & 0x7f; - - /* Check the ID nibble. */ - if ((idreg & 0xf0) != 0x20) { /* SMC Ultra */ - retval = -ENODEV; - goto out; - } - - /* Select the station address register set. */ - outb(reg4, ioaddr + 4); - - for (i = 0; i < 8; i++) - checksum += inb(ioaddr + 8 + i); - if ((checksum & 0xff) != 0xff) { - retval = -ENODEV; - goto out; - } - - if (ei_debug && version_printed++ == 0) - printk(version); - - model_name = "SMC Ultra32"; - - for (i = 0; i < 6; i++) - dev->dev_addr[i] = inb(ioaddr + 8 + i); - - printk("%s: %s at 0x%X, %pM", - dev->name, model_name, ioaddr, dev->dev_addr); - - /* 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); - - /* Reset RAM addr. */ - outb(0x00, ioaddr + 0x0b); - - /* 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); - - if ((inb(ioaddr + ULTRA32_CFG5) & 0x40) == 0) { - printk("\nsmc-ultra32: Card RAM is disabled! " - "Run EISA config utility.\n"); - retval = -ENODEV; - goto out; - } - if ((inb(ioaddr + ULTRA32_CFG2) & 0x04) == 0) - printk("\nsmc-ultra32: Ignoring Bus-Master enable bit. " - "Run EISA config utility.\n"); - - if (dev->irq < 2) { - unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15}; - int irq = irqmap[inb(ioaddr + ULTRA32_CFG5) & 0x07]; - if (irq == 0) { - printk(", failed to detect IRQ line.\n"); - retval = -EAGAIN; - goto out; - } - dev->irq = irq; - } - - /* The 8390 isn't at the base address, so fake the offset */ - dev->base_addr = ioaddr + ULTRA32_NIC_OFFSET; - - /* Save RAM address in the unused reg0 to avoid excess inb's. */ - ei_status.reg0 = inb(ioaddr + ULTRA32_CFG3) & 0xfc; - - dev->mem_start = 0xc0000 + ((ei_status.reg0 & 0x7c) << 11); - - ei_status.name = model_name; - ei_status.word16 = 1; - ei_status.tx_start_page = 0; - ei_status.rx_start_page = TX_PAGES; - /* All Ultra32 cards have 32KB memory with an 8KB window. */ - ei_status.stop_page = 128; - - ei_status.mem = ioremap(dev->mem_start, 0x2000); - if (!ei_status.mem) { - printk(", failed to ioremap.\n"); - retval = -ENOMEM; - goto out; - } - dev->mem_end = dev->mem_start + 0x1fff; - - printk(", IRQ %d, 32KB memory, 8KB window at 0x%lx-0x%lx.\n", - dev->irq, dev->mem_start, dev->mem_end); - ei_status.block_input = &ultra32_block_input; - ei_status.block_output = &ultra32_block_output; - ei_status.get_8390_hdr = &ultra32_get_8390_hdr; - ei_status.reset_8390 = &ultra32_reset_8390; - - dev->netdev_ops = &ultra32_netdev_ops; - NS8390_init(dev, 0); - - return 0; -out: - release_region(ioaddr, ULTRA32_IO_EXTENT); - return retval; -} - -static int ultra32_open(struct net_device *dev) -{ - int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; /* ASIC addr */ - int irq_flags = (inb(ioaddr + ULTRA32_CFG5) & 0x08) ? 0 : IRQF_SHARED; - int retval; - - retval = request_irq(dev->irq, ei_interrupt, irq_flags, dev->name, dev); - if (retval) - return retval; - - outb(ULTRA32_MEMENB, ioaddr); /* Enable Shared Memory. */ - outb(0x80, ioaddr + ULTRA32_CFG6); /* Enable Interrupts. */ - outb(0x84, ioaddr + 5); /* Enable MEM16 & Disable Bus Master. */ - outb(0x01, ioaddr + 6); /* Enable Interrupts. */ - /* 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 int ultra32_close(struct net_device *dev) -{ - int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; /* CMDREG */ - - netif_stop_queue(dev); - - if (ei_debug > 1) - printk("%s: Shutting down ethercard.\n", dev->name); - - outb(0x00, ioaddr + ULTRA32_CFG6); /* Disable Interrupts. */ - outb(0x00, ioaddr + 6); /* Disable interrupts. */ - free_irq(dev->irq, dev); - - NS8390_init(dev, 0); - - return 0; -} - -static void ultra32_reset_8390(struct net_device *dev) -{ - int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; /* ASIC base addr */ - - outb(ULTRA32_RESET, ioaddr); - if (ei_debug > 1) printk("resetting Ultra32, t=%ld...", jiffies); - ei_status.txing = 0; - - outb(ULTRA32_MEMENB, ioaddr); /* Enable Shared Memory. */ - outb(0x80, ioaddr + ULTRA32_CFG6); /* Enable Interrupts. */ - outb(0x84, ioaddr + 5); /* Enable MEM16 & Disable Bus Master. */ - outb(0x01, ioaddr + 6); /* Enable Interrupts. */ - if (ei_debug > 1) printk("reset done\n"); -} - -/* 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 ultra32_get_8390_hdr(struct net_device *dev, - struct e8390_pkt_hdr *hdr, - int ring_page) -{ - void __iomem *hdr_start = ei_status.mem + ((ring_page & 0x1f) << 8); - unsigned int RamReg = dev->base_addr - ULTRA32_NIC_OFFSET + ULTRA32_CFG3; - - /* Select correct 8KB Window. */ - outb(ei_status.reg0 | ((ring_page & 0x60) >> 5), RamReg); - -#ifdef __BIG_ENDIAN - /* Officially this is what we are doing, but the readl() is faster */ - /* unfortunately it isn't endian aware of the struct */ - memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr)); - hdr->count = le16_to_cpu(hdr->count); -#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, or in this case, when a - packet spans an 8KB boundary. Note that the current 8KB segment is - already set by the get_8390_hdr routine. */ - -static void ultra32_block_input(struct net_device *dev, - int count, - struct sk_buff *skb, - int ring_offset) -{ - void __iomem *xfer_start = ei_status.mem + (ring_offset & 0x1fff); - unsigned int RamReg = dev->base_addr - ULTRA32_NIC_OFFSET + ULTRA32_CFG3; - - if ((ring_offset & ~0x1fff) != ((ring_offset + count - 1) & ~0x1fff)) { - int semi_count = 8192 - (ring_offset & 0x1FFF); - memcpy_fromio(skb->data, xfer_start, semi_count); - count -= semi_count; - if (ring_offset < 96*256) { - /* Select next 8KB Window. */ - ring_offset += semi_count; - outb(ei_status.reg0 | ((ring_offset & 0x6000) >> 13), RamReg); - memcpy_fromio(skb->data + semi_count, ei_status.mem, count); - } else { - /* Select first 8KB Window. */ - outb(ei_status.reg0, RamReg); - memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count); - } - } else { - memcpy_fromio(skb->data, xfer_start, count); - } -} - -static void ultra32_block_output(struct net_device *dev, - int count, - const unsigned char *buf, - int start_page) -{ - void __iomem *xfer_start = ei_status.mem + (start_page<<8); - unsigned int RamReg = dev->base_addr - ULTRA32_NIC_OFFSET + ULTRA32_CFG3; - - /* Select first 8KB Window. */ - outb(ei_status.reg0, RamReg); - - memcpy_toio(xfer_start, buf, count); -} - -#ifdef MODULE -#define MAX_ULTRA32_CARDS 4 /* Max number of Ultra cards per module */ -static struct net_device *dev_ultra[MAX_ULTRA32_CARDS]; - -MODULE_DESCRIPTION("SMC Ultra32 EISA ethernet driver"); -MODULE_LICENSE("GPL"); - -int __init init_module(void) -{ - int this_dev, found = 0; - - for (this_dev = 0; this_dev < MAX_ULTRA32_CARDS; this_dev++) { - struct net_device *dev = ultra32_probe(-1); - if (IS_ERR(dev)) - break; - dev_ultra[found++] = dev; - } - if (found) - return 0; - printk(KERN_WARNING "smc-ultra32.c: No SMC Ultra32 found.\n"); - return -ENXIO; -} - -void __exit cleanup_module(void) -{ - int this_dev; - - for (this_dev = 0; this_dev < MAX_ULTRA32_CARDS; this_dev++) { - struct net_device *dev = dev_ultra[this_dev]; - if (dev) { - unregister_netdev(dev); - cleanup_card(dev); - free_netdev(dev); - } - } -} -#endif /* MODULE */ - |