diff options
Diffstat (limited to 'kernel/drivers/net/arcnet/com20020_cs.c')
| -rw-r--r-- | kernel/drivers/net/arcnet/com20020_cs.c | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/kernel/drivers/net/arcnet/com20020_cs.c b/kernel/drivers/net/arcnet/com20020_cs.c new file mode 100644 index 000000000..057d95821 --- /dev/null +++ b/kernel/drivers/net/arcnet/com20020_cs.c @@ -0,0 +1,331 @@ +/* + * Linux ARCnet driver - COM20020 PCMCIA support + * + * Written 1994-1999 by Avery Pennarun, + * based on an ISA version by David Woodhouse. + * Derived from ibmtr_cs.c by Steve Kipisz (pcmcia-cs 3.1.4) + * which was derived from pcnet_cs.c by David Hinds. + * Some additional portions derived from skeleton.c by Donald Becker. + * + * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com) + * for sponsoring the further development of this driver. + * + * ********************** + * + * The original copyright of skeleton.c was as follows: + * + * skeleton.c Written 1993 by Donald Becker. + * Copyright 1993 United States Government as represented by the + * Director, National Security Agency. This software may only be used + * and distributed according to the terms of the GNU General Public License as + * modified by SRC, incorporated herein by reference. + * + * ********************** + * Changes: + * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 08/08/2000 + * - reorganize kmallocs in com20020_attach, checking all for failure + * and releasing the previous allocations if one fails + * ********************** + * + * For more details, see drivers/net/arcnet.c + * + * ********************** + */ +#include <linux/kernel.h> +#include <linux/ptrace.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/timer.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/netdevice.h> +#include <linux/arcdevice.h> +#include <linux/com20020.h> + +#include <pcmcia/cistpl.h> +#include <pcmcia/ds.h> + +#include <asm/io.h> + +#define VERSION "arcnet: COM20020 PCMCIA support loaded.\n" + + +static void regdump(struct net_device *dev) +{ +#ifdef DEBUG + int ioaddr = dev->base_addr; + int count; + + netdev_dbg(dev, "register dump:\n"); + for (count = ioaddr; count < ioaddr + 16; count++) + { + if (!(count % 16)) + pr_cont("%04X:", count); + pr_cont(" %02X", inb(count)); + } + pr_cont("\n"); + + netdev_dbg(dev, "buffer0 dump:\n"); + /* set up the address register */ + count = 0; + outb((count >> 8) | RDDATAflag | AUTOINCflag, _ADDR_HI); + outb(count & 0xff, _ADDR_LO); + + for (count = 0; count < 256+32; count++) + { + if (!(count % 16)) + pr_cont("%04X:", count); + + /* copy the data */ + pr_cont(" %02X", inb(_MEMDATA)); + } + pr_cont("\n"); +#endif +} + + + +/*====================================================================*/ + +/* Parameters that can be set with 'insmod' */ + +static int node; +static int timeout = 3; +static int backplane; +static int clockp; +static int clockm; + +module_param(node, int, 0); +module_param(timeout, int, 0); +module_param(backplane, int, 0); +module_param(clockp, int, 0); +module_param(clockm, int, 0); + +MODULE_LICENSE("GPL"); + +/*====================================================================*/ + +static int com20020_config(struct pcmcia_device *link); +static void com20020_release(struct pcmcia_device *link); + +static void com20020_detach(struct pcmcia_device *p_dev); + +/*====================================================================*/ + +static int com20020_probe(struct pcmcia_device *p_dev) +{ + struct com20020_dev *info; + struct net_device *dev; + struct arcnet_local *lp; + + dev_dbg(&p_dev->dev, "com20020_attach()\n"); + + /* Create new network device */ + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + goto fail_alloc_info; + + dev = alloc_arcdev(""); + if (!dev) + goto fail_alloc_dev; + + lp = netdev_priv(dev); + lp->timeout = timeout; + lp->backplane = backplane; + lp->clockp = clockp; + lp->clockm = clockm & 3; + lp->hw.owner = THIS_MODULE; + + /* fill in our module parameters as defaults */ + dev->dev_addr[0] = node; + + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[0]->end = 16; + p_dev->config_flags |= CONF_ENABLE_IRQ; + + info->dev = dev; + p_dev->priv = info; + + return com20020_config(p_dev); + +fail_alloc_dev: + kfree(info); +fail_alloc_info: + return -ENOMEM; +} /* com20020_attach */ + +static void com20020_detach(struct pcmcia_device *link) +{ + struct com20020_dev *info = link->priv; + struct net_device *dev = info->dev; + + dev_dbg(&link->dev, "detach...\n"); + + dev_dbg(&link->dev, "com20020_detach\n"); + + dev_dbg(&link->dev, "unregister...\n"); + + unregister_netdev(dev); + + /* + * this is necessary because we register our IRQ separately + * from card services. + */ + if (dev->irq) + free_irq(dev->irq, dev); + + com20020_release(link); + + /* Unlink device structure, free bits */ + dev_dbg(&link->dev, "unlinking...\n"); + if (link->priv) + { + dev = info->dev; + if (dev) + { + dev_dbg(&link->dev, "kfree...\n"); + free_netdev(dev); + } + dev_dbg(&link->dev, "kfree2...\n"); + kfree(info); + } + +} /* com20020_detach */ + +static int com20020_config(struct pcmcia_device *link) +{ + struct arcnet_local *lp; + struct com20020_dev *info; + struct net_device *dev; + int i, ret; + int ioaddr; + + info = link->priv; + dev = info->dev; + + dev_dbg(&link->dev, "config...\n"); + + dev_dbg(&link->dev, "com20020_config\n"); + + dev_dbg(&link->dev, "baseport1 is %Xh\n", + (unsigned int) link->resource[0]->start); + + i = -ENODEV; + link->io_lines = 16; + + if (!link->resource[0]->start) + { + for (ioaddr = 0x100; ioaddr < 0x400; ioaddr += 0x10) + { + link->resource[0]->start = ioaddr; + i = pcmcia_request_io(link); + if (i == 0) + break; + } + } + else + i = pcmcia_request_io(link); + + if (i != 0) + { + dev_dbg(&link->dev, "requestIO failed totally!\n"); + goto failed; + } + + ioaddr = dev->base_addr = link->resource[0]->start; + dev_dbg(&link->dev, "got ioaddr %Xh\n", ioaddr); + + dev_dbg(&link->dev, "request IRQ %d\n", + link->irq); + if (!link->irq) + { + dev_dbg(&link->dev, "requestIRQ failed totally!\n"); + goto failed; + } + + dev->irq = link->irq; + + ret = pcmcia_enable_device(link); + if (ret) + goto failed; + + if (com20020_check(dev)) + { + regdump(dev); + goto failed; + } + + lp = netdev_priv(dev); + lp->card_name = "PCMCIA COM20020"; + lp->card_flags = ARC_CAN_10MBIT; /* pretend all of them can 10Mbit */ + + SET_NETDEV_DEV(dev, &link->dev); + + i = com20020_found(dev, 0); /* calls register_netdev */ + + if (i != 0) { + dev_notice(&link->dev, + "com20020_found() failed\n"); + goto failed; + } + + netdev_dbg(dev, "port %#3lx, irq %d\n", + dev->base_addr, dev->irq); + return 0; + +failed: + dev_dbg(&link->dev, "com20020_config failed...\n"); + com20020_release(link); + return -ENODEV; +} /* com20020_config */ + +static void com20020_release(struct pcmcia_device *link) +{ + dev_dbg(&link->dev, "com20020_release\n"); + pcmcia_disable_device(link); +} + +static int com20020_suspend(struct pcmcia_device *link) +{ + struct com20020_dev *info = link->priv; + struct net_device *dev = info->dev; + + if (link->open) + netif_device_detach(dev); + + return 0; +} + +static int com20020_resume(struct pcmcia_device *link) +{ + struct com20020_dev *info = link->priv; + struct net_device *dev = info->dev; + + if (link->open) { + int ioaddr = dev->base_addr; + struct arcnet_local *lp = netdev_priv(dev); + ARCRESET; + } + + return 0; +} + +static const struct pcmcia_device_id com20020_ids[] = { + PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.", + "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf), + PCMCIA_DEVICE_PROD_ID12("SoHard AG", + "SH ARC PCMCIA", 0xf8991729, 0x69dff0c7), + PCMCIA_DEVICE_NULL +}; +MODULE_DEVICE_TABLE(pcmcia, com20020_ids); + +static struct pcmcia_driver com20020_cs_driver = { + .owner = THIS_MODULE, + .name = "com20020_cs", + .probe = com20020_probe, + .remove = com20020_detach, + .id_table = com20020_ids, + .suspend = com20020_suspend, + .resume = com20020_resume, +}; +module_pcmcia_driver(com20020_cs_driver); |