| /* |
| * 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/init.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/cs.h> |
| #include <pcmcia/cistpl.h> |
| #include <pcmcia/ds.h> |
| |
| #include <asm/io.h> |
| #include <asm/system.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); |
| |
| /*====================================================================*/ |
| |
| typedef struct com20020_dev_t { |
| struct net_device *dev; |
| } com20020_dev_t; |
| |
| /*====================================================================== |
| |
| com20020_attach() creates an "instance" of the driver, allocating |
| local data structures for one device. The device is registered |
| with Card Services. |
| |
| ======================================================================*/ |
| |
| static int com20020_probe(struct pcmcia_device *p_dev) |
| { |
| com20020_dev_t *info; |
| struct net_device *dev; |
| struct arcnet_local *lp; |
| |
| dev_dbg(&p_dev->dev, "com20020_attach()\n"); |
| |
| /* Create new network device */ |
| info = kzalloc(sizeof(struct com20020_dev_t), 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->conf.Attributes = CONF_ENABLE_IRQ; |
| p_dev->conf.IntType = INT_MEMORY_AND_IO; |
| |
| info->dev = dev; |
| p_dev->priv = info; |
| |
| return com20020_config(p_dev); |
| |
| fail_alloc_dev: |
| kfree(info); |
| fail_alloc_info: |
| return -ENOMEM; |
| } /* com20020_attach */ |
| |
| /*====================================================================== |
| |
| This deletes a driver "instance". The device is de-registered |
| with Card Services. If it has been released, all local data |
| structures are freed. Otherwise, the structures will be freed |
| when the device is released. |
| |
| ======================================================================*/ |
| |
| static void com20020_detach(struct pcmcia_device *link) |
| { |
| struct com20020_dev_t *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 */ |
| |
| /*====================================================================== |
| |
| com20020_config() is scheduled to run after a CARD_INSERTION event |
| is received, to configure the PCMCIA socket, and to make the |
| device available to the system. |
| |
| ======================================================================*/ |
| |
| static int com20020_config(struct pcmcia_device *link) |
| { |
| struct arcnet_local *lp; |
| com20020_dev_t *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_request_configuration(link, &link->conf); |
| 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 */ |
| |
| /*====================================================================== |
| |
| After a card is removed, com20020_release() will unregister the net |
| device, and release the PCMCIA configuration. If the device is |
| still open, this will be postponed until it is closed. |
| |
| ======================================================================*/ |
| |
| 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) |
| { |
| com20020_dev_t *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) |
| { |
| com20020_dev_t *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 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, |
| .drv = { |
| .name = "com20020_cs", |
| }, |
| .probe = com20020_probe, |
| .remove = com20020_detach, |
| .id_table = com20020_ids, |
| .suspend = com20020_suspend, |
| .resume = com20020_resume, |
| }; |
| |
| static int __init init_com20020_cs(void) |
| { |
| return pcmcia_register_driver(&com20020_cs_driver); |
| } |
| |
| static void __exit exit_com20020_cs(void) |
| { |
| pcmcia_unregister_driver(&com20020_cs_driver); |
| } |
| |
| module_init(init_com20020_cs); |
| module_exit(exit_com20020_cs); |