drivers/staging/comedi/drivers/addi_apci_3120.c

   1 #include <linux/pci.h>
   2
   3 #include "../comedidev.h"
   4 #include "comedi_fc.h"
   5 #include "amcc_s5933.h"
   6
   7 #include "addi-data/addi_common.h"
   8
   9 #include "addi-data/hwdrv_apci3120.c"
  10
  11 enum apci3120_boardid {
  12         BOARD_APCI3120,
  13         BOARD_APCI3001,
  14 };
  15
  16 static const struct addi_board apci3120_boardtypes[] = {
  17         [BOARD_APCI3120] = {
  18                 .pc_DriverName          = "apci3120",
  19                 .i_NbrAiChannel         = 16,
  20                 .i_NbrAiChannelDiff     = 8,
  21                 .i_AiChannelList        = 16,
  22                 .i_NbrAoChannel         = 8,
  23                 .i_AiMaxdata            = 0xffff,
  24                 .i_AoMaxdata            = 0x3fff,
  25                 .i_NbrDiChannel         = 4,
  26                 .i_NbrDoChannel         = 4,
  27                 .i_DoMaxdata            = 0x0f,
  28                 .interrupt              = v_APCI3120_Interrupt,
  29         },
  30         [BOARD_APCI3001] = {
  31                 .pc_DriverName          = "apci3001",
  32                 .i_NbrAiChannel         = 16,
  33                 .i_NbrAiChannelDiff     = 8,
  34                 .i_AiChannelList        = 16,
  35                 .i_AiMaxdata            = 0xfff,
  36                 .i_NbrDiChannel         = 4,
  37                 .i_NbrDoChannel         = 4,
  38                 .i_DoMaxdata            = 0x0f,
  39                 .interrupt              = v_APCI3120_Interrupt,
  40         },
  41 };
  42
  43 static irqreturn_t v_ADDI_Interrupt(int irq, void *d)
  44 {
  45         struct comedi_device *dev = d;
  46         const struct addi_board *this_board = comedi_board(dev);
  47
  48         this_board->interrupt(irq, d);
  49         return IRQ_RETVAL(1);
  50 }
  51
  52 static int apci3120_auto_attach(struct comedi_device *dev,
  53                                 unsigned long context)
  54 {
  55         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
  56         const struct addi_board *this_board = NULL;
  57         struct addi_private *devpriv;
  58         struct comedi_subdevice *s;
  59         int ret, pages, i;
  60
  61         if (context < ARRAY_SIZE(apci3120_boardtypes))
  62                 this_board = &apci3120_boardtypes[context];
  63         if (!this_board)
  64                 return -ENODEV;
  65         dev->board_ptr = this_board;
  66         dev->board_name = this_board->pc_DriverName;
  67
  68         devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
  69         if (!devpriv)
  70                 return -ENOMEM;
  71         dev->private = devpriv;
  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->ui_DmaBufferSamples[i] =
 107                                 devpriv->ui_DmaBufferSize[i] >> 1;
 108                         devpriv->ul_DmaBufferHw[i] =
 109                                 virt_to_bus((void *)devpriv->
 110                                 ul_DmaBufferVirtual[i]);
 111                 }
 112         }
 113         if (!devpriv->ul_DmaBufferVirtual[0])
 114                 devpriv->us_UseDma = ADDI_DISABLE;
 115
 116         if (devpriv->ul_DmaBufferVirtual[1])
 117                 devpriv->b_DmaDoubleBuffer = 1;
 118
 119         ret = comedi_alloc_subdevices(dev, 5);
 120         if (ret)
 121                 return ret;
 122
 123         /*  Allocate and Initialise AI Subdevice Structures */
 124         s = &dev->subdevices[0];
 125         dev->read_subdev = s;
 126         s->type = COMEDI_SUBD_AI;
 127         s->subdev_flags =
 128                 SDF_READABLE | SDF_COMMON | SDF_GROUND
 129                 | SDF_DIFF;
 130         if (this_board->i_NbrAiChannel) {
 131                 s->n_chan = this_board->i_NbrAiChannel;
 132                 devpriv->b_SingelDiff = 0;
 133         } else {
 134                 s->n_chan = this_board->i_NbrAiChannelDiff;
 135                 devpriv->b_SingelDiff = 1;
 136         }
 137         s->maxdata = this_board->i_AiMaxdata;
 138         s->len_chanlist = this_board->i_AiChannelList;
 139         s->range_table = &range_apci3120_ai;
 140
 141         /* Set the initialisation flag */
 142         devpriv->b_AiInitialisation = 1;
 143
 144         s->insn_config = i_APCI3120_InsnConfigAnalogInput;
 145         s->insn_read = i_APCI3120_InsnReadAnalogInput;
 146         s->do_cmdtest = i_APCI3120_CommandTestAnalogInput;
 147         s->do_cmd = i_APCI3120_CommandAnalogInput;
 148         s->cancel = i_APCI3120_StopCyclicAcquisition;
 149
 150         /*  Allocate and Initialise AO Subdevice Structures */
 151         s = &dev->subdevices[1];
 152         if (this_board->i_NbrAoChannel) {
 153                 s->type = COMEDI_SUBD_AO;
 154                 s->subdev_flags = SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
 155                 s->n_chan = this_board->i_NbrAoChannel;
 156                 s->maxdata = this_board->i_AoMaxdata;
 157                 s->len_chanlist = this_board->i_NbrAoChannel;
 158                 s->range_table = &range_apci3120_ao;
 159                 s->insn_write = i_APCI3120_InsnWriteAnalogOutput;
 160         } else {
 161                 s->type = COMEDI_SUBD_UNUSED;
 162         }
 163
 164         /*  Allocate and Initialise DI Subdevice Structures */
 165         s = &dev->subdevices[2];
 166         s->type = COMEDI_SUBD_DI;
 167         s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON;
 168         s->n_chan = this_board->i_NbrDiChannel;
 169         s->maxdata = 1;
 170         s->len_chanlist = this_board->i_NbrDiChannel;
 171         s->range_table = &range_digital;
 172         s->io_bits = 0; /* all bits input */
 173         s->insn_bits = apci3120_di_insn_bits;
 174
 175         /*  Allocate and Initialise DO Subdevice Structures */
 176         s = &dev->subdevices[3];
 177         s->type = COMEDI_SUBD_DO;
 178         s->subdev_flags =
 179                 SDF_READABLE | SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
 180         s->n_chan = this_board->i_NbrDoChannel;
 181         s->maxdata = this_board->i_DoMaxdata;
 182         s->len_chanlist = this_board->i_NbrDoChannel;
 183         s->range_table = &range_digital;
 184         s->io_bits = 0xf;       /* all bits output */
 185         s->insn_bits = apci3120_do_insn_bits;
 186
 187         /*  Allocate and Initialise Timer Subdevice Structures */
 188         s = &dev->subdevices[4];
 189         s->type = COMEDI_SUBD_TIMER;
 190         s->subdev_flags = SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
 191         s->n_chan = 1;
 192         s->maxdata = 0;
 193         s->len_chanlist = 1;
 194         s->range_table = &range_digital;
 195
 196         s->insn_write = i_APCI3120_InsnWriteTimer;
 197         s->insn_read = i_APCI3120_InsnReadTimer;
 198         s->insn_config = i_APCI3120_InsnConfigTimer;
 199
 200         i_APCI3120_Reset(dev);
 201         return 0;
 202 }
 203
 204 static void apci3120_detach(struct comedi_device *dev)
 205 {
 206         struct addi_private *devpriv = dev->private;
 207
 208         if (devpriv) {
 209                 if (dev->iobase)
 210                         i_APCI3120_Reset(dev);
 211                 if (dev->irq)
 212                         free_irq(dev->irq, dev);
 213                 if (devpriv->ul_DmaBufferVirtual[0]) {
 214                         free_pages((unsigned long)devpriv->
 215                                 ul_DmaBufferVirtual[0],
 216                                 devpriv->ui_DmaBufferPages[0]);
 217                 }
 218                 if (devpriv->ul_DmaBufferVirtual[1]) {
 219                         free_pages((unsigned long)devpriv->
 220                                 ul_DmaBufferVirtual[1],
 221                                 devpriv->ui_DmaBufferPages[1]);
 222                 }
 223         }
 224         comedi_pci_disable(dev);
 225 }
 226
 227 static struct comedi_driver apci3120_driver = {
 228         .driver_name    = "addi_apci_3120",
 229         .module         = THIS_MODULE,
 230         .auto_attach    = apci3120_auto_attach,
 231         .detach         = apci3120_detach,
 232 };
 233
 234 static int apci3120_pci_probe(struct pci_dev *dev,
 235                               const struct pci_device_id *id)
 236 {
 237         return comedi_pci_auto_config(dev, &apci3120_driver, id->driver_data);
 238 }
 239
 240 static DEFINE_PCI_DEVICE_TABLE(apci3120_pci_table) = {
 241         { PCI_VDEVICE(AMCC, 0x818d), BOARD_APCI3120 },
 242         { PCI_VDEVICE(AMCC, 0x828d), BOARD_APCI3001 },
 243         { 0 }
 244 };
 245 MODULE_DEVICE_TABLE(pci, apci3120_pci_table);
 246
 247 static struct pci_driver apci3120_pci_driver = {
 248         .name           = "addi_apci_3120",
 249         .id_table       = apci3120_pci_table,
 250         .probe          = apci3120_pci_probe,
 251         .remove         = comedi_pci_auto_unconfig,
 252 };
 253 module_comedi_pci_driver(apci3120_driver, apci3120_pci_driver);
 254
 255 MODULE_AUTHOR("Comedi http://www.comedi.org");
 256 MODULE_DESCRIPTION("Comedi low-level driver");
 257 MODULE_LICENSE("GPL");