#ifndef _NI_LABPC_H
#define _NI_LABPC_H
-#define EEPROM_SIZE 256 // 256 byte eeprom
-#define NUM_AO_CHAN 2 // boards have two analog output channels
+#define EEPROM_SIZE 256 /* 256 byte eeprom */
+#define NUM_AO_CHAN 2 /* boards have two analog output channels */
enum labpc_bustype { isa_bustype, pci_bustype, pcmcia_bustype };
enum labpc_register_layout { labpc_plus_layout, labpc_1200_layout };
struct labpc_board_struct {
const char *name;
- int device_id; // device id for pci and pcmcia boards
- int ai_speed; // maximum input speed in nanoseconds
- enum labpc_bustype bustype; // ISA/PCI/etc.
- enum labpc_register_layout register_layout; // 1200 has extra registers compared to pc+
- int has_ao; // has analog output true/false
+ int device_id; /* device id for pci and pcmcia boards */
+ int ai_speed; /* maximum input speed in nanoseconds */
+ enum labpc_bustype bustype; /* ISA/PCI/etc. */
+ enum labpc_register_layout register_layout; /* 1200 has extra registers compared to pc+ */
+ int has_ao; /* has analog output true/false */
const struct comedi_lrange *ai_range_table;
const int *ai_range_code;
const int *ai_range_is_unipolar;
- unsigned ai_scan_up:1; // board can auto scan up in ai channels, not just down
+ unsigned ai_scan_up:1; /* board can auto scan up in ai channels, not just down */
unsigned memory_mapped_io:1; /* uses memory mapped io instead of ioports */
};
struct labpc_private {
- struct mite_struct *mite; // for mite chip on pci-1200
+ struct mite_struct *mite; /* for mite chip on pci-1200 */
volatile unsigned long long count; /* number of data points left to be taken */
- unsigned int ao_value[NUM_AO_CHAN]; // software copy of analog output values
- // software copys of bits written to command registers
+ unsigned int ao_value[NUM_AO_CHAN]; /* software copy of analog output values */
+ /* software copys of bits written to command registers */
volatile unsigned int command1_bits;
volatile unsigned int command2_bits;
volatile unsigned int command3_bits;
volatile unsigned int command4_bits;
volatile unsigned int command5_bits;
volatile unsigned int command6_bits;
- // store last read of board status registers
+ /* store last read of board status registers */
volatile unsigned int status1_bits;
volatile unsigned int status2_bits;
unsigned int divisor_a0; /* value to load into board's counter a0 (conversion pacing) for timed conversions */
unsigned int divisor_b0; /* value to load into board's counter b0 (master) for timed conversions */
unsigned int divisor_b1; /* value to load into board's counter b1 (scan pacing) for timed conversions */
- unsigned int dma_chan; // dma channel to use
- u16 *dma_buffer; // buffer ai will dma into
- unsigned int dma_transfer_size; // transfer size in bytes for current transfer
- enum transfer_type current_transfer; // we are using dma/fifo-half-full/etc.
- unsigned int eeprom_data[EEPROM_SIZE]; // stores contents of board's eeprom
- unsigned int caldac[16]; // stores settings of calibration dacs
- // function pointers so we can use inb/outb or readb/writeb as appropriate
+ unsigned int dma_chan; /* dma channel to use */
+ u16 *dma_buffer; /* buffer ai will dma into */
+ unsigned int dma_transfer_size; /* transfer size in bytes for current transfer */
+ enum transfer_type current_transfer; /* we are using dma/fifo-half-full/etc. */
+ unsigned int eeprom_data[EEPROM_SIZE]; /* stores contents of board's eeprom */
+ unsigned int caldac[16]; /* stores settings of calibration dacs */
+ /* function pointers so we can use inb/outb or readb/writeb as appropriate */
unsigned int (*read_byte) (unsigned long address);
void (*write_byte) (unsigned int byte, unsigned long address);
};