/* comedi/drivers/adl_pci6208.c Hardware driver for ADLink 6208 series cards: card | voltage output | current output -------------+-------------------+--------------- PCI-6208V | 8 channels | - PCI-6216V | 16 channels | - PCI-6208A | 8 channels | 8 channels COMEDI - Linux Control and Measurement Device Interface Copyright (C) 2000 David A. Schleef 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: adl_pci6208 Description: ADLink PCI-6208A Devices: [ADLink] PCI-6208A (adl_pci6208) Author: nsyeow Updated: Fri, 30 Jan 2004 14:44:27 +0800 Status: untested Configuration Options: none References: - ni_660x.c - adl_pci9111.c copied the entire pci setup section - adl_pci9118.c */ /* * These headers should be followed by a blank line, and any comments * you wish to say about the driver. The comment area is the place * to put any known bugs, limitations, unsupported features, supported * command triggers, whether or not commands are supported on particular * subdevices, etc. * * Somewhere in the comment should be information about configuration * options that are used with comedi_config. */ #include "../comedidev.h" #include "comedi_pci.h" #define PCI6208_DRIVER_NAME "adl_pci6208" /* Board descriptions */ struct pci6208_board { const char *name; unsigned short dev_id; /* `lspci` will show you this */ int ao_chans; /* int ao_bits; */ }; static const struct pci6208_board pci6208_boards[] = { /*{ .name = "pci6208v", .dev_id = 0x6208, // not sure .ao_chans = 8 // , .ao_bits = 16 }, { .name = "pci6216v", .dev_id = 0x6208, // not sure .ao_chans = 16 // , .ao_bits = 16 }, */ { .name = "pci6208a", .dev_id = 0x6208, .ao_chans = 8 /* , .ao_bits = 16 */ } }; /* This is used by modprobe to translate PCI IDs to drivers. Should * only be used for PCI and ISA-PnP devices */ static DEFINE_PCI_DEVICE_TABLE(pci6208_pci_table) = { /* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */ /* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */ { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, { 0} }; MODULE_DEVICE_TABLE(pci, pci6208_pci_table); /* Will be initialized in pci6208_find device(). */ #define thisboard ((const struct pci6208_board *)dev->board_ptr) struct pci6208_private { int data; struct pci_dev *pci_dev; /* for a PCI device */ unsigned int ao_readback[2]; /* Used for AO readback */ }; #define devpriv ((struct pci6208_private *)dev->private) static int pci6208_attach(struct comedi_device *dev, struct comedi_devconfig *it); static int pci6208_detach(struct comedi_device *dev); static struct comedi_driver driver_pci6208 = { .driver_name = PCI6208_DRIVER_NAME, .module = THIS_MODULE, .attach = pci6208_attach, .detach = pci6208_detach, }; COMEDI_PCI_INITCLEANUP(driver_pci6208, pci6208_pci_table); static int pci6208_find_device(struct comedi_device *dev, int bus, int slot); static int pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, int dev_minor); /*read/write functions*/ static int pci6208_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data); static int pci6208_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data); /* static int pci6208_dio_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, */ /* struct comedi_insn *insn,unsigned int *data); */ /* static int pci6208_dio_insn_config(struct comedi_device *dev,struct comedi_subdevice *s, */ /* struct comedi_insn *insn,unsigned int *data); */ /* * Attach is called by the Comedi core to configure the driver * for a particular board. If you specified a board_name array * in the driver structure, dev->board_ptr contains that * address. */ static int pci6208_attach(struct comedi_device *dev, struct comedi_devconfig *it) { struct comedi_subdevice *s; int retval; unsigned long io_base; printk("comedi%d: pci6208: ", dev->minor); retval = alloc_private(dev, sizeof(struct pci6208_private)); if (retval < 0) return retval; retval = pci6208_find_device(dev, it->options[0], it->options[1]); if (retval < 0) return retval; retval = pci6208_pci_setup(devpriv->pci_dev, &io_base, dev->minor); if (retval < 0) return retval; dev->iobase = io_base; dev->board_name = thisboard->name; /* * Allocate the subdevice structures. alloc_subdevice() is a * convenient macro defined in comedidev.h. */ if (alloc_subdevices(dev, 2) < 0) return -ENOMEM; s = dev->subdevices + 0; /* analog output subdevice */ s->type = COMEDI_SUBD_AO; s->subdev_flags = SDF_WRITABLE; /* anything else to add here?? */ s->n_chan = thisboard->ao_chans; s->maxdata = 0xffff; /* 16-bit DAC */ s->range_table = &range_bipolar10; /* this needs to be checked. */ s->insn_write = pci6208_ao_winsn; s->insn_read = pci6208_ao_rinsn; /* s=dev->subdevices+1; */ /* digital i/o subdevice */ /* s->type=COMEDI_SUBD_DIO; */ /* s->subdev_flags=SDF_READABLE|SDF_WRITABLE; */ /* s->n_chan=16; */ /* s->maxdata=1; */ /* s->range_table=&range_digital; */ /* s->insn_bits = pci6208_dio_insn_bits; */ /* s->insn_config = pci6208_dio_insn_config; */ printk("attached\n"); return 1; } /* * _detach is called to deconfigure a device. It should deallocate * resources. * This function is also called when _attach() fails, so it should be * careful not to release resources that were not necessarily * allocated by _attach(). dev->private and dev->subdevices are * deallocated automatically by the core. */ static int pci6208_detach(struct comedi_device *dev) { printk("comedi%d: pci6208: remove\n", dev->minor); if (devpriv && devpriv->pci_dev) { if (dev->iobase) { comedi_pci_disable(devpriv->pci_dev); } pci_dev_put(devpriv->pci_dev); } return 0; } static int pci6208_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { int i = 0, Data_Read; unsigned short chan = CR_CHAN(insn->chanspec); unsigned long invert = 1 << (16 - 1); unsigned long out_value; /* Writing a list of values to an AO channel is probably not * very useful, but that's how the interface is defined. */ for (i = 0; i < insn->n; i++) { out_value = data[i] ^ invert; /* a typical programming sequence */ do { Data_Read = (inw(dev->iobase) & 1); } while (Data_Read); outw(out_value, dev->iobase + (0x02 * chan)); devpriv->ao_readback[chan] = out_value; } /* return the number of samples read/written */ return i; } /* AO subdevices should have a read insn as well as a write insn. * Usually this means copying a value stored in devpriv. */ static int pci6208_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { int i; int chan = CR_CHAN(insn->chanspec); for (i = 0; i < insn->n; i++) data[i] = devpriv->ao_readback[chan]; return i; } /* DIO devices are slightly special. Although it is possible to * implement the insn_read/insn_write interface, it is much more * useful to applications if you implement the insn_bits interface. * This allows packed reading/writing of the DIO channels. The * comedi core can convert between insn_bits and insn_read/write */ /* static int pci6208_dio_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, */ /* struct comedi_insn *insn,unsigned int *data) */ /* { */ /* if(insn->n!=2)return -EINVAL; */ /* The insn data is a mask in data[0] and the new data * in data[1], each channel cooresponding to a bit. */ /* if(data[0]){ */ /* s->state &= ~data[0]; */ /* s->state |= data[0]&data[1]; */ /* Write out the new digital output lines */ /* outw(s->state,dev->iobase + SKEL_DIO); */ /* } */ /* on return, data[1] contains the value of the digital * input and output lines. */ /* data[1]=inw(dev->iobase + SKEL_DIO); */ /* or we could just return the software copy of the output values if * it was a purely digital output subdevice */ /* data[1]=s->state; */ /* return 2; */ /* } */ /* static int pci6208_dio_insn_config(struct comedi_device *dev,struct comedi_subdevice *s, */ /* struct comedi_insn *insn,unsigned int *data) */ /* { */ /* int chan=CR_CHAN(insn->chanspec); */ /* The input or output configuration of each digital line is * configured by a special insn_config instruction. chanspec * contains the channel to be changed, and data[0] contains the * value COMEDI_INPUT or COMEDI_OUTPUT. */ /* if(data[0]==COMEDI_OUTPUT){ */ /* s->io_bits |= 1<io_bits &= ~(1<io_bits,dev->iobase + SKEL_DIO_CONFIG); */ /* return 1; */ /* } */ static int pci6208_find_device(struct comedi_device *dev, int bus, int slot) { struct pci_dev *pci_dev; int i; for (pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL); pci_dev != NULL; pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) { if (pci_dev->vendor == PCI_VENDOR_ID_ADLINK) { for (i = 0; i < ARRAY_SIZE(pci6208_boards); i++) { if (pci6208_boards[i].dev_id == pci_dev->device) { /* was a particular bus/slot requested? */ if ((bus != 0) || (slot != 0)) { /* are we on the wrong bus/slot? */ if (pci_dev->bus->number != bus || PCI_SLOT(pci_dev->devfn) != slot) { continue; } } dev->board_ptr = pci6208_boards + i; goto found; } } } } printk("comedi%d: no supported board found! (req. bus/slot : %d/%d)\n", dev->minor, bus, slot); return -EIO; found: printk("comedi%d: found %s (b:s:f=%d:%d:%d) , irq=%d\n", dev->minor, pci6208_boards[i].name, pci_dev->bus->number, PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn), pci_dev->irq); /* TODO: Warn about non-tested boards. */ /* switch(board->device_id) */ /* { */ /* }; */ devpriv->pci_dev = pci_dev; return 0; } static int pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, int dev_minor) { unsigned long io_base, io_range, lcr_io_base, lcr_io_range; /* Enable PCI device and request regions */ if (comedi_pci_enable(pci_dev, PCI6208_DRIVER_NAME) < 0) { printk ("comedi%d: Failed to enable PCI device and request regions\n", dev_minor); return -EIO; } /* Read local configuration register base address [PCI_BASE_ADDRESS #1]. */ lcr_io_base = pci_resource_start(pci_dev, 1); lcr_io_range = pci_resource_len(pci_dev, 1); printk("comedi%d: local config registers at address 0x%4lx [0x%4lx]\n", dev_minor, lcr_io_base, lcr_io_range); /* Read PCI6208 register base address [PCI_BASE_ADDRESS #2]. */ io_base = pci_resource_start(pci_dev, 2); io_range = pci_resource_end(pci_dev, 2) - io_base + 1; printk("comedi%d: 6208 registers at address 0x%4lx [0x%4lx]\n", dev_minor, io_base, io_range); *io_base_ptr = io_base; /* devpriv->io_range = io_range; */ /* devpriv->is_valid=0; */ /* devpriv->lcr_io_base=lcr_io_base; */ /* devpriv->lcr_io_range=lcr_io_range; */ return 0; }