drivers/staging/comedi/drivers/addi_apci_3120.c

   1 #include <linux/module.h>
   2 #include <linux/pci.h>
   3
   4 #include "../comedidev.h"
   5 #include "comedi_fc.h"
   6 #include "amcc_s5933.h"
   7
   8 #include "addi-data/addi_common.h"
   9
  10 #include "addi-data/hwdrv_apci3120.c"
  11
  12 enum apci3120_boardid {
  13         BOARD_APCI3120,
  14         BOARD_APCI3001,
  15 };
  16
  17 static const struct addi_board apci3120_boardtypes[] = {
  18         [BOARD_APCI3120] = {
  19                 .pc_DriverName          = "apci3120",
  20                 .i_NbrAiChannel         = 16,
  21                 .i_NbrAiChannelDiff     = 8,
  22                 .i_AiChannelList        = 16,
  23                 .i_NbrAoChannel         = 8,
  24                 .i_AiMaxdata            = 0xffff,
  25                 .i_AoMaxdata            = 0x3fff,
  26                 .i_NbrDiChannel         = 4,
  27                 .i_NbrDoChannel         = 4,
  28                 .i_DoMaxdata            = 0x0f,
  29                 .interrupt              = v_APCI3120_Interrupt,
  30         },
  31         [BOARD_APCI3001] = {
  32                 .pc_DriverName          = "apci3001",
  33                 .i_NbrAiChannel         = 16,
  34                 .i_NbrAiChannelDiff     = 8,
  35                 .i_AiChannelList        = 16,
  36                 .i_AiMaxdata            = 0xfff,
  37                 .i_NbrDiChannel         = 4,
  38                 .i_NbrDoChannel         = 4,
  39                 .i_DoMaxdata            = 0x0f,
  40                 .interrupt              = v_APCI3120_Interrupt,
  41         },
  42 };
  43
  44 static irqreturn_t v_ADDI_Interrupt(int irq, void *d)
  45 {
  46         struct comedi_device *dev = d;
  47         const struct addi_board *this_board = comedi_board(dev);
  48
  49         this_board->interrupt(irq, d);
  50         return IRQ_RETVAL(1);
  51 }
  52
  53 static int apci3120_auto_attach(struct comedi_device *dev,
  54                                 unsigned long context)
  55 {
  56         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
  57         const struct addi_board *this_board = NULL;
  58         struct addi_private *devpriv;
  59         struct comedi_subdevice *s;
  60         int ret, pages, i;
  61
  62         if (context < ARRAY_SIZE(apci3120_boardtypes))
  63                 this_board = &apci3120_boardtypes[context];
  64         if (!this_board)
  65                 return -ENODEV;
  66         dev->board_ptr = this_board;
  67         dev->board_name = this_board->pc_DriverName;
  68
  69         devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
  70         if (!devpriv)
  71                 return -ENOMEM;
  72
  73         ret = comedi_pci_enable(dev);
  74         if (ret)
  75                 return ret;
  76         pci_set_master(pcidev);
  77
  78         dev->iobase = pci_resource_start(pcidev, 1);
  79         devpriv->iobase = dev->iobase;
  80         devpriv->i_IobaseAmcc = pci_resource_start(pcidev, 0);
  81         devpriv->i_IobaseAddon = pci_resource_start(pcidev, 2);
  82         devpriv->i_IobaseReserved = pci_resource_start(pcidev, 3);
  83
  84         if (pcidev->irq > 0) {
  85                 ret = request_irq(pcidev->irq, v_ADDI_Interrupt, IRQF_SHARED,
  86                                   dev->board_name, dev);
  87                 if (ret == 0)
  88                         dev->irq = pcidev->irq;
  89         }
  90
  91         devpriv->us_UseDma = ADDI_ENABLE;
  92
  93         /* Allocate DMA buffers */
  94         devpriv->b_DmaDoubleBuffer = 0;
  95         for (i = 0; i < 2; i++) {
  96                 for (pages = 4; pages >= 0; pages--) {
  97                         devpriv->ul_DmaBufferVirtual[i] =
  98                                 (void *) __get_free_pages(GFP_KERNEL, pages);
  99
 100                         if (devpriv->ul_DmaBufferVirtual[i])
 101                                 break;
 102                 }
 103                 if (devpriv->ul_DmaBufferVirtual[i]) {
 104                         devpriv->ui_DmaBufferPages[i] = pages;
 105                         devpriv->ui_DmaBufferSize[i] = PAGE_SIZE * pages;
 106                         devpriv->ul_DmaBufferHw[i] =
 107                                 virt_to_bus((void *)devpriv->
 108                                 ul_DmaBufferVirtual[i]);
 109                 }
 110         }
 111         if (!devpriv->ul_DmaBufferVirtual[0])
 112                 devpriv->us_UseDma = ADDI_DISABLE;
 113
 114         if (devpriv->ul_DmaBufferVirtual[1])
 115                 devpriv->b_DmaDoubleBuffer = 1;
 116
 117         ret = comedi_alloc_subdevices(dev, 5);
 118         if (ret)
 119                 return ret;
 120
 121         /*  Allocate and Initialise AI Subdevice Structures */
 122         s = &dev->subdevices[0];
 123         dev->read_subdev = s;
 124         s->type = COMEDI_SUBD_AI;
 125         s->subdev_flags =
 126                 SDF_READABLE | SDF_COMMON | SDF_GROUND
 127                 | SDF_DIFF;
 128         if (this_board->i_NbrAiChannel) {
 129                 s->n_chan = this_board->i_NbrAiChannel;
 130                 devpriv->b_SingelDiff = 0;
 131         } else {
 132                 s->n_chan = this_board->i_NbrAiChannelDiff;
 133                 devpriv->b_SingelDiff = 1;
 134         }
 135         s->maxdata = this_board->i_AiMaxdata;
 136         s->len_chanlist = this_board->i_AiChannelList;
 137         s->range_table = &range_apci3120_ai;
 138
 139         s->insn_config = i_APCI3120_InsnConfigAnalogInput;
 140         s->insn_read = i_APCI3120_InsnReadAnalogInput;
 141         s->do_cmdtest = i_APCI3120_CommandTestAnalogInput;
 142         s->do_cmd = i_APCI3120_CommandAnalogInput;
 143         s->cancel = i_APCI3120_StopCyclicAcquisition;
 144
 145         /*  Allocate and Initialise AO Subdevice Structures */
 146         s = &dev->subdevices[1];
 147         if (this_board->i_NbrAoChannel) {
 148                 s->type = COMEDI_SUBD_AO;
 149                 s->subdev_flags = SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
 150                 s->n_chan = this_board->i_NbrAoChannel;
 151                 s->maxdata = this_board->i_AoMaxdata;
 152                 s->len_chanlist = this_board->i_NbrAoChannel;
 153                 s->range_table = &range_apci3120_ao;
 154                 s->insn_write = i_APCI3120_InsnWriteAnalogOutput;
 155         } else {
 156                 s->type = COMEDI_SUBD_UNUSED;
 157         }
 158
 159         /*  Allocate and Initialise DI Subdevice Structures */
 160         s = &dev->subdevices[2];
 161         s->type = COMEDI_SUBD_DI;
 162         s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON;
 163         s->n_chan = this_board->i_NbrDiChannel;
 164         s->maxdata = 1;
 165         s->len_chanlist = this_board->i_NbrDiChannel;
 166         s->range_table = &range_digital;
 167         s->io_bits = 0; /* all bits input */
 168         s->insn_bits = apci3120_di_insn_bits;
 169
 170         /*  Allocate and Initialise DO Subdevice Structures */
 171         s = &dev->subdevices[3];
 172         s->type = COMEDI_SUBD_DO;
 173         s->subdev_flags =
 174                 SDF_READABLE | SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
 175         s->n_chan = this_board->i_NbrDoChannel;
 176         s->maxdata = this_board->i_DoMaxdata;
 177         s->len_chanlist = this_board->i_NbrDoChannel;
 178         s->range_table = &range_digital;
 179         s->io_bits = 0xf;       /* all bits output */
 180         s->insn_bits = apci3120_do_insn_bits;
 181
 182         /*  Allocate and Initialise Timer Subdevice Structures */
 183         s = &dev->subdevices[4];
 184         s->type = COMEDI_SUBD_TIMER;
 185         s->subdev_flags = SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
 186         s->n_chan = 1;
 187         s->maxdata = 0;
 188         s->len_chanlist = 1;
 189         s->range_table = &range_digital;
 190
 191         s->insn_write = i_APCI3120_InsnWriteTimer;
 192         s->insn_read = i_APCI3120_InsnReadTimer;
 193         s->insn_config = i_APCI3120_InsnConfigTimer;
 194
 195         i_APCI3120_Reset(dev);
 196         return 0;
 197 }
 198
 199 static void apci3120_detach(struct comedi_device *dev)
 200 {
 201         struct addi_private *devpriv = dev->private;
 202
 203         if (devpriv) {
 204                 if (dev->iobase)
 205                         i_APCI3120_Reset(dev);
 206                 if (dev->irq)
 207                         free_irq(dev->irq, dev);
 208                 if (devpriv->ul_DmaBufferVirtual[0]) {
 209                         free_pages((unsigned long)devpriv->
 210                                 ul_DmaBufferVirtual[0],
 211                                 devpriv->ui_DmaBufferPages[0]);
 212                 }
 213                 if (devpriv->ul_DmaBufferVirtual[1]) {
 214                         free_pages((unsigned long)devpriv->
 215                                 ul_DmaBufferVirtual[1],
 216                                 devpriv->ui_DmaBufferPages[1]);
 217                 }
 218         }
 219         comedi_pci_disable(dev);
 220 }
 221
 222 static struct comedi_driver apci3120_driver = {
 223         .driver_name    = "addi_apci_3120",
 224         .module         = THIS_MODULE,
 225         .auto_attach    = apci3120_auto_attach,
 226         .detach         = apci3120_detach,
 227 };
 228
 229 static int apci3120_pci_probe(struct pci_dev *dev,
 230                               const struct pci_device_id *id)
 231 {
 232         return comedi_pci_auto_config(dev, &apci3120_driver, id->driver_data);
 233 }
 234
 235 static DEFINE_PCI_DEVICE_TABLE(apci3120_pci_table) = {
 236         { PCI_VDEVICE(AMCC, 0x818d), BOARD_APCI3120 },
 237         { PCI_VDEVICE(AMCC, 0x828d), BOARD_APCI3001 },
 238         { 0 }
 239 };
 240 MODULE_DEVICE_TABLE(pci, apci3120_pci_table);
 241
 242 static struct pci_driver apci3120_pci_driver = {
 243         .name           = "addi_apci_3120",
 244         .id_table       = apci3120_pci_table,
 245         .probe          = apci3120_pci_probe,
 246         .remove         = comedi_pci_auto_unconfig,
 247 };
 248 module_comedi_pci_driver(apci3120_driver, apci3120_pci_driver);
 249
 250 MODULE_AUTHOR("Comedi http://www.comedi.org");
 251 MODULE_DESCRIPTION("Comedi low-level driver");
 252 MODULE_LICENSE("GPL");