#include <pcpsdrvr.h>

Data Fields
PCPS_DEV	dev
	Device info data that can be passed to user space. More...

PCPS_READ_FNC *	read
	Pointer to the read function depending on the access mode. More...

uint	access_mode
	Access mode used for the device, depending on interface type. See PCPS_ACCESS_MODES. More...

bool	access_mode_forced
	Flag indicating that the access mode was forced. More...

MBG_IOPORT_ADDR_MAPPED	status_port_offs

MBG_IOPORT_ADDR_MAPPED	status_port
	Address of the status port register. More...

MBG_IOPORT_ADDR_MAPPED	irq_enb_disb_port
	Address of the IRQ control register. More...

MBG_IOPORT_ADDR_MAPPED	irq_flag_port
	Address of the IRQ status register. More...

MBG_IOPORT_ADDR_MAPPED	irq_ack_port
	Address of the register to acknowledge an IRQ. More...

uint32_t	irq_enb_mask
	Bit mask to be set to enable IRQs. More...

uint32_t	irq_disb_mask
	Bit mask to be cleared to disable IRQs. More...

uint32_t	irq_flag_mask
	Bit mask used to check if device has generated an IRQ. More...

uint32_t	irq_ack_mask
	Bit mask to be set to acknowledge an IRQ. More...

PCI_ASIC_VERSION	raw_asic_version
	Raw ASIC version. More...

PCI_ASIC_VERSION	asic_version
	ASIC version. More...

PCI_ASIC_FEATURES	asic_features
	ASIC feature mask. More...

PCPS_RSRC_INFO	rsrc_info
	Summary of resources used by the device. More...

MBG_PC_CYCLES	acc_cycles
	Cycles count taken when device was accessed last time. More...

MBG_MUTEX	dev_mutex
	Mutex used for device access serialization. More...

PCI_ASIC volatile __iomem *	mm_asic_addr

PCPS_TIME_STAMP volatile __iomem *	mm_tstamp_addr

PCPS_IRQ_STAT_INFO	irq_stat_info

BUILTIN_FEATURE_MASK	builtin_features
	Mask of builtin features, depending on device type. More...

MBG_XDEV_FEATURES	xdev_features
	Receiver info plus extended device features. More...

union {
uint8_t cmd
	In case of small data we just need one of the PCPS_CMD_CODES. More...

struct {
uint8_t cmd
	PCPS_READ_GPS_DATA or PCPS_WRITE_GPS_DATA. More...

uint8_t gps_cmd
	One of the PC_GPS_CMD_CODES. More...

} gps_cmd_info

}	cmd_info

uint16_t	n_bytes

uint8_t	size_n_bytes

uint8_t	uc

PCPS_IO_BUFFER	io_buffer

atomic_t	connected
	Flag indicating if the device is "connected". More...

atomic_t	access_in_progress
	Flag indicating if device access is currently in progress. More...

atomic_t	data_avail
	Flag indicating if data has been made available by IRQ handler. More...

unsigned long	jiffies_at_irq
	Set by IRQ handler, used to check if cyclic IRQs still occur. More...

struct fasync_struct *	fasyncptr
	Used for asynchronous signalling when data is available. More...

PCPS_TIME	t
	Date and time read by IRQ handler. More...

struct wait_queue *	wait_queue
	Used for asynchronous I/O (older kernel API) More...

atomic_t	open_count
	Number of processes that have opened this device. More...

struct cdev	cdev
	Linux device class. More...

dev_t	lx_dev
	Linux device associated with this device. More...

Detailed Description

Definition at line 777 of file pcpsdrvr.h.

Field Documentation

◆ acc_cycles

MBG_PC_CYCLES PCPS_DDEV_s::acc_cycles

Cycles count taken when device was accessed last time.

Definition at line 799 of file pcpsdrvr.h.

Referenced by ioctl_switch(), pcps_read_amcc_s5920(), pcps_read_amcc_s5933(), pcps_read_asic(), pcps_read_std(), report_io_cmd(), and report_ret_val().

◆ access_in_progress

atomic_t PCPS_DDEV_s::access_in_progress

Flag indicating if device access is currently in progress.

Definition at line 864 of file pcpsdrvr.h.

◆ access_mode

uint PCPS_DDEV_s::access_mode

Access mode used for the device, depending on interface type. See PCPS_ACCESS_MODES.

Definition at line 782 of file pcpsdrvr.h.

Referenced by report_access_mode(), and set_access_mode().

◆ access_mode_forced

bool PCPS_DDEV_s::access_mode_forced

Flag indicating that the access mode was forced.

Definition at line 783 of file pcpsdrvr.h.

Referenced by report_access_mode(), and set_access_mode().

◆ asic_features

PCI_ASIC_FEATURES PCPS_DDEV_s::asic_features

ASIC feature mask.

Definition at line 796 of file pcpsdrvr.h.

Referenced by ioctl_switch(), and pcps_probe_device().

◆ asic_version

PCI_ASIC_VERSION PCPS_DDEV_s::asic_version

ASIC version.

Definition at line 795 of file pcpsdrvr.h.

Referenced by pcps_probe_device().

◆ builtin_features

BUILTIN_FEATURE_MASK PCPS_DDEV_s::builtin_features

Mask of builtin features, depending on device type.

Definition at line 822 of file pcpsdrvr.h.

Referenced by pcps_chk_dev_feat(), and pcps_probe_device().

◆ cdev

struct cdev PCPS_DDEV_s::cdev

Linux device class.

Definition at line 878 of file pcpsdrvr.h.

◆ cmd

uint8_t PCPS_DDEV_s::cmd

In case of small data we just need one of the PCPS_CMD_CODES.

PCPS_READ_GPS_DATA or PCPS_WRITE_GPS_DATA.

Definition at line 838 of file pcpsdrvr.h.

Referenced by release_cyclic_lock(), and report_ret_val().

◆ cmd_info

union { ... } PCPS_DDEV_s::cmd_info

A tiny buffer that can be used to write a command or GPS (large data) command to a device. Such buffer may need to be DMA capable, which is the case for this private data structure, but is usually not the case for automatic variables. So if we use this we avoid having to allocate/free an extra buffer for each access.

Referenced by release_cyclic_lock(), and report_ret_val().