--- /dev/null
+/*
+ comedi/drivers/ni_daq_dio24.c
+ Driver for National Instruments PCMCIA DAQ-Card DIO-24
+ Copyright (C) 2002 Daniel Vecino Castel <dvecino@able.es>
+
+ PCMCIA crap at end of file is adapted from dummy_cs.c 1.31 2001/08/24 12:13:13
+ from the pcmcia package.
+ The initial developer of the pcmcia dummy_cs.c code is David A. Hinds
+ <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+************************************************************************
+*/
+/*
+Driver: ni_daq_dio24
+Description: National Instruments PCMCIA DAQ-Card DIO-24
+Author: Daniel Vecino Castel <dvecino@able.es>
+Devices: [National Instruments] PCMCIA DAQ-Card DIO-24 (ni_daq_dio24)
+Status: ?
+Updated: Thu, 07 Nov 2002 21:53:06 -0800
+
+This is just a wrapper around the 8255.o driver to properly handle
+the PCMCIA interface.
+*/
+
+//#define LABPC_DEBUG // enable debugging messages
+#undef LABPC_DEBUG
+
+#include "../comedidev.h"
+
+#include <linux/ioport.h>
+#include <linux/version.h>
+
+#include "8255.h"
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ds.h>
+
+static struct pcmcia_device *pcmcia_cur_dev = NULL;
+
+#define DIO24_SIZE 4 // size of io region used by board
+
+static int dio24_attach(comedi_device * dev, comedi_devconfig * it);
+static int dio24_detach(comedi_device * dev);
+
+enum dio24_bustype { pcmcia_bustype };
+
+typedef struct dio24_board_struct {
+ const char *name;
+ int device_id; // device id for pcmcia board
+ enum dio24_bustype bustype; // PCMCIA
+ int have_dio; // have 8255 chip
+ // function pointers so we can use inb/outb or readb/writeb as appropriate
+ unsigned int (*read_byte) (unsigned int address);
+ void (*write_byte) (unsigned int byte, unsigned int address);
+} dio24_board;
+
+static const dio24_board dio24_boards[] = {
+ {
+ name: "daqcard-dio24",
+ device_id:0x475c,// 0x10b is manufacturer id, 0x475c is device id
+ bustype: pcmcia_bustype,
+ have_dio:1,
+ },
+ {
+ name: "ni_daq_dio24",
+ device_id:0x475c,// 0x10b is manufacturer id, 0x475c is device id
+ bustype: pcmcia_bustype,
+ have_dio:1,
+ },
+};
+
+/*
+ * Useful for shorthand access to the particular board structure
+ */
+#define thisboard ((const dio24_board *)dev->board_ptr)
+
+typedef struct {
+ int data; /* number of data points left to be taken */
+} dio24_private;
+
+#define devpriv ((dio24_private *)dev->private)
+
+static comedi_driver driver_dio24 = {
+ driver_name:"ni_daq_dio24",
+ module:THIS_MODULE,
+ attach:dio24_attach,
+ detach:dio24_detach,
+ num_names:sizeof(dio24_boards) / sizeof(dio24_board),
+ board_name:&dio24_boards[0].name,
+ offset:sizeof(dio24_board),
+};
+
+static int dio24_attach(comedi_device * dev, comedi_devconfig * it)
+{
+ comedi_subdevice *s;
+ unsigned long iobase = 0;
+#ifdef incomplete
+ unsigned int irq = 0;
+#endif
+ struct pcmcia_device *link;
+
+ /* allocate and initialize dev->private */
+ if (alloc_private(dev, sizeof(dio24_private)) < 0)
+ return -ENOMEM;
+
+ // get base address, irq etc. based on bustype
+ switch (thisboard->bustype) {
+ case pcmcia_bustype:
+ link = pcmcia_cur_dev; /* XXX hack */
+ if (!link)
+ return -EIO;
+ iobase = link->io.BasePort1;
+#ifdef incomplete
+ irq = link->irq.AssignedIRQ;
+#endif
+ break;
+ default:
+ printk("bug! couldn't determine board type\n");
+ return -EINVAL;
+ break;
+ }
+ printk("comedi%d: ni_daq_dio24: %s, io 0x%lx", dev->minor,
+ thisboard->name, iobase);
+#ifdef incomplete
+ if (irq) {
+ printk(", irq %u", irq);
+ }
+#endif
+
+ printk("\n");
+
+ if (iobase == 0) {
+ printk("io base address is zero!\n");
+ return -EINVAL;
+ }
+
+ dev->iobase = iobase;
+
+#ifdef incomplete
+ /* grab our IRQ */
+ dev->irq = irq;
+#endif
+
+ dev->board_name = thisboard->name;
+
+ if (alloc_subdevices(dev, 1) < 0)
+ return -ENOMEM;
+
+ /* 8255 dio */
+ s = dev->subdevices + 0;
+ subdev_8255_init(dev, s, NULL, dev->iobase);
+
+ return 0;
+};
+
+static int dio24_detach(comedi_device * dev)
+{
+ printk("comedi%d: ni_daq_dio24: remove\n", dev->minor);
+
+ if (dev->subdevices)
+ subdev_8255_cleanup(dev, dev->subdevices + 0);
+
+ if (thisboard->bustype != pcmcia_bustype && dev->iobase)
+ release_region(dev->iobase, DIO24_SIZE);
+ if (dev->irq)
+ comedi_free_irq(dev->irq, dev);
+
+ return 0;
+};
+
+// PCMCIA crap
+
+/*
+ All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
+ you do not define PCMCIA_DEBUG at all, all the debug code will be
+ left out. If you compile with PCMCIA_DEBUG=0, the debug code will
+ be present but disabled -- but it can then be enabled for specific
+ modules at load time with a 'pc_debug=#' option to insmod.
+*/
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0644);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version = "ni_daq_dio24.c, based on dummy_cs.c";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+static void dio24_config(struct pcmcia_device *link);
+static void dio24_release(struct pcmcia_device *link);
+static int dio24_cs_suspend(struct pcmcia_device *p_dev);
+static int dio24_cs_resume(struct pcmcia_device *p_dev);
+
+/*
+ The attach() and detach() entry points are used to create and destroy
+ "instances" of the driver, where each instance represents everything
+ needed to manage one actual PCMCIA card.
+*/
+
+static int dio24_cs_attach(struct pcmcia_device *);
+static void dio24_cs_detach(struct pcmcia_device *);
+
+/*
+ You'll also need to prototype all the functions that will actually
+ be used to talk to your device. See 'memory_cs' for a good example
+ of a fully self-sufficient driver; the other drivers rely more or
+ less on other parts of the kernel.
+*/
+
+/*
+ The dev_info variable is the "key" that is used to match up this
+ device driver with appropriate cards, through the card configuration
+ database.
+*/
+
+static const dev_info_t dev_info = "ni_daq_dio24";
+
+typedef struct local_info_t {
+ struct pcmcia_device *link;
+ dev_node_t node;
+ int stop;
+ struct bus_operations *bus;
+} local_info_t;
+
+/*======================================================================
+
+ dio24_cs_attach() creates an "instance" of the driver, allocating
+ local data structures for one device. The device is registered
+ with Card Services.
+
+ The dev_link structure is initialized, but we don't actually
+ configure the card at this point -- we wait until we receive a
+ card insertion event.
+
+======================================================================*/
+
+static int dio24_cs_attach(struct pcmcia_device *link)
+{
+ local_info_t *local;
+
+ printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - CS-attach!\n");
+
+ DEBUG(0, "dio24_cs_attach()\n");
+
+ /* Allocate space for private device-specific data */
+ local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
+ if (!local)
+ return -ENOMEM;
+ local->link = link;
+ link->priv = local;
+
+ /* Interrupt setup */
+ link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+ link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+ link->irq.Handler = NULL;
+
+ /*
+ General socket configuration defaults can go here. In this
+ client, we assume very little, and rely on the CIS for almost
+ everything. In most clients, many details (i.e., number, sizes,
+ and attributes of IO windows) are fixed by the nature of the
+ device, and can be hard-wired here.
+ */
+ link->conf.Attributes = 0;
+ link->conf.IntType = INT_MEMORY_AND_IO;
+
+ pcmcia_cur_dev = link;
+
+ dio24_config(link);
+
+ return 0;
+} /* dio24_cs_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 dio24_cs_detach(struct pcmcia_device *link)
+{
+
+ printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - cs-detach!\n");
+
+ DEBUG(0, "dio24_cs_detach(0x%p)\n", link);
+
+ if (link->dev_node) {
+ ((local_info_t *) link->priv)->stop = 1;
+ dio24_release(link);
+ }
+
+ /* This points to the parent local_info_t struct */
+ if (link->priv)
+ kfree(link->priv);
+
+} /* dio24_cs_detach */
+
+/*======================================================================
+
+ dio24_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 void dio24_config(struct pcmcia_device *link)
+{
+ local_info_t *dev = link->priv;
+ tuple_t tuple;
+ cisparse_t parse;
+ int last_ret;
+ u_char buf[64];
+ win_req_t req;
+ memreq_t map;
+ cistpl_cftable_entry_t dflt = { 0 };
+
+ printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO! - config\n");
+
+ DEBUG(0, "dio24_config(0x%p)\n", link);
+
+ /*
+ This reads the card's CONFIG tuple to find its configuration
+ registers.
+ */
+ tuple.DesiredTuple = CISTPL_CONFIG;
+ tuple.Attributes = 0;
+ tuple.TupleData = buf;
+ tuple.TupleDataMax = sizeof(buf);
+ tuple.TupleOffset = 0;
+ if ((last_ret = pcmcia_get_first_tuple(link, &tuple)) != 0) {
+ cs_error(link, GetFirstTuple, last_ret);
+ goto cs_failed;
+ }
+ if ((last_ret = pcmcia_get_tuple_data(link, &tuple)) != 0) {
+ cs_error(link, GetTupleData, last_ret);
+ goto cs_failed;
+ }
+ if ((last_ret = pcmcia_parse_tuple(&tuple, &parse)) != 0) {
+ cs_error(link, ParseTuple, last_ret);
+ goto cs_failed;
+ }
+ link->conf.ConfigBase = parse.config.base;
+ link->conf.Present = parse.config.rmask[0];
+
+ /*
+ In this loop, we scan the CIS for configuration table entries,
+ each of which describes a valid card configuration, including
+ voltage, IO window, memory window, and interrupt settings.
+
+ We make no assumptions about the card to be configured: we use
+ just the information available in the CIS. In an ideal world,
+ this would work for any PCMCIA card, but it requires a complete
+ and accurate CIS. In practice, a driver usually "knows" most of
+ these things without consulting the CIS, and most client drivers
+ will only use the CIS to fill in implementation-defined details.
+ */
+ tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+ if ((last_ret = pcmcia_get_first_tuple(link, &tuple)) != 0) {
+ cs_error(link, GetFirstTuple, last_ret);
+ goto cs_failed;
+ }
+ while (1) {
+ cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
+ if (pcmcia_get_tuple_data(link, &tuple) != 0)
+ goto next_entry;
+ if (pcmcia_parse_tuple(&tuple, &parse) != 0)
+ goto next_entry;
+
+ if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
+ dflt = *cfg;
+ if (cfg->index == 0)
+ goto next_entry;
+ link->conf.ConfigIndex = cfg->index;
+
+ /* Does this card need audio output? */
+ if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
+ link->conf.Attributes |= CONF_ENABLE_SPKR;
+ link->conf.Status = CCSR_AUDIO_ENA;
+ }
+
+ /* Do we need to allocate an interrupt? */
+ if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
+ link->conf.Attributes |= CONF_ENABLE_IRQ;
+
+ /* IO window settings */
+ link->io.NumPorts1 = link->io.NumPorts2 = 0;
+ if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
+ cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+ if (!(io->flags & CISTPL_IO_8BIT))
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+ if (!(io->flags & CISTPL_IO_16BIT))
+ link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+ link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
+ link->io.BasePort1 = io->win[0].base;
+ link->io.NumPorts1 = io->win[0].len;
+ if (io->nwin > 1) {
+ link->io.Attributes2 = link->io.Attributes1;
+ link->io.BasePort2 = io->win[1].base;
+ link->io.NumPorts2 = io->win[1].len;
+ }
+ /* This reserves IO space but doesn't actually enable it */
+ if (pcmcia_request_io(link, &link->io) != 0)
+ goto next_entry;
+ }
+
+ if ((cfg->mem.nwin > 0) || (dflt.mem.nwin > 0)) {
+ cistpl_mem_t *mem =
+ (cfg->mem.nwin) ? &cfg->mem : &dflt.mem;
+ req.Attributes = WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM;
+ req.Attributes |= WIN_ENABLE;
+ req.Base = mem->win[0].host_addr;
+ req.Size = mem->win[0].len;
+ if (req.Size < 0x1000)
+ req.Size = 0x1000;
+ req.AccessSpeed = 0;
+ if (pcmcia_request_window(&link, &req, &link->win))
+ goto next_entry;
+ map.Page = 0;
+ map.CardOffset = mem->win[0].card_addr;
+ if (pcmcia_map_mem_page(link->win, &map))
+ goto next_entry;
+ }
+ /* If we got this far, we're cool! */
+ break;
+
+ next_entry:
+ if ((last_ret = pcmcia_get_next_tuple(link, &tuple)) != 0) {
+ cs_error(link, GetNextTuple, last_ret);
+ goto cs_failed;
+ }
+ }
+
+ /*
+ Allocate an interrupt line. Note that this does not assign a
+ handler to the interrupt, unless the 'Handler' member of the
+ irq structure is initialized.
+ */
+ if (link->conf.Attributes & CONF_ENABLE_IRQ)
+ if ((last_ret = pcmcia_request_irq(link, &link->irq)) != 0) {
+ cs_error(link, RequestIRQ, last_ret);
+ goto cs_failed;
+ }
+
+ /*
+ This actually configures the PCMCIA socket -- setting up
+ the I/O windows and the interrupt mapping, and putting the
+ card and host interface into "Memory and IO" mode.
+ */
+ if ((last_ret = pcmcia_request_configuration(link, &link->conf)) != 0) {
+ cs_error(link, RequestConfiguration, last_ret);
+ goto cs_failed;
+ }
+
+ /*
+ At this point, the dev_node_t structure(s) need to be
+ initialized and arranged in a linked list at link->dev.
+ */
+ sprintf(dev->node.dev_name, "ni_daq_dio24");
+ dev->node.major = dev->node.minor = 0;
+ link->dev_node = &dev->node;
+
+ /* Finally, report what we've done */
+ printk(KERN_INFO "%s: index 0x%02x",
+ dev->node.dev_name, link->conf.ConfigIndex);
+ if (link->conf.Attributes & CONF_ENABLE_IRQ)
+ printk(", irq %d", link->irq.AssignedIRQ);
+ if (link->io.NumPorts1)
+ printk(", io 0x%04x-0x%04x", link->io.BasePort1,
+ link->io.BasePort1 + link->io.NumPorts1 - 1);
+ if (link->io.NumPorts2)
+ printk(" & 0x%04x-0x%04x", link->io.BasePort2,
+ link->io.BasePort2 + link->io.NumPorts2 - 1);
+ if (link->win)
+ printk(", mem 0x%06lx-0x%06lx", req.Base,
+ req.Base + req.Size - 1);
+ printk("\n");
+
+ return;
+
+ cs_failed:
+ printk(KERN_INFO "Fallo");
+ dio24_release(link);
+
+} /* dio24_config */
+
+static void dio24_release(struct pcmcia_device *link)
+{
+ DEBUG(0, "dio24_release(0x%p)\n", link);
+
+ pcmcia_disable_device(link);
+} /* dio24_release */
+
+/*======================================================================
+
+ The card status event handler. Mostly, this schedules other
+ stuff to run after an event is received.
+
+ When a CARD_REMOVAL event is received, we immediately set a
+ private flag to block future accesses to this device. All the
+ functions that actually access the device should check this flag
+ to make sure the card is still present.
+
+======================================================================*/
+
+static int dio24_cs_suspend(struct pcmcia_device *link)
+{
+ local_info_t *local = link->priv;
+
+ /* Mark the device as stopped, to block IO until later */
+ local->stop = 1;
+ return 0;
+} /* dio24_cs_suspend */
+
+static int dio24_cs_resume(struct pcmcia_device *link)
+{
+ local_info_t *local = link->priv;
+
+ local->stop = 0;
+ return 0;
+} /* dio24_cs_resume */
+
+/*====================================================================*/
+
+static struct pcmcia_device_id dio24_cs_ids[] = {
+ /* N.B. These IDs should match those in dio24_boards */
+ PCMCIA_DEVICE_MANF_CARD(0x010b, 0x475c), /* daqcard-dio24 */
+ PCMCIA_DEVICE_NULL
+};
+
+MODULE_DEVICE_TABLE(pcmcia, dio24_cs_ids);
+
+struct pcmcia_driver dio24_cs_driver = {
+ .probe = dio24_cs_attach,
+ .remove = dio24_cs_detach,
+ .suspend = dio24_cs_suspend,
+ .resume = dio24_cs_resume,
+ .id_table = dio24_cs_ids,
+ .owner = THIS_MODULE,
+ .drv = {
+ .name = dev_info,
+ },
+};
+
+static int __init init_dio24_cs(void)
+{
+ printk("ni_daq_dio24: HOLA SOY YO!\n");
+ DEBUG(0, "%s\n", version);
+ pcmcia_register_driver(&dio24_cs_driver);
+ return 0;
+}
+
+static void __exit exit_dio24_cs(void)
+{
+ DEBUG(0, "ni_dio24: unloading\n");
+ pcmcia_unregister_driver(&dio24_cs_driver);
+}
+
+int __init init_module(void)
+{
+ int ret;
+
+ ret = init_dio24_cs();
+ if (ret < 0)
+ return ret;
+
+ return comedi_driver_register(&driver_dio24);
+}
+
+void __exit cleanup_module(void)
+{
+ exit_dio24_cs();
+ comedi_driver_unregister(&driver_dio24);
+}
OSDN Git Service
