* but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
- *
- * Driver includes
*/
#ifndef __DGNC_DRIVER_H
#include "digi.h" /* Digi specific ioctl header */
-/* Driver defines */
-
/* Driver identification and error statements */
#define PROCSTR "dgnc" /* /proc entries */
#define DEVSTR "/dev/dg/dgnc" /* /dev entries */
#define PORT_NUM(dev) ((dev) & 0x7f)
#define IS_PRINT(dev) (((dev) & 0xff) >= 0x80)
-/*
- *MAX number of stop characters we will send
- * when our read queue is getting full
- */
+/* MAX number of stop characters sent when our read queue is getting full */
#define MAX_STOPS_SENT 5
/* 4 extra for alignment play space */
#endif
/* All the possible states the driver can be while being loaded. */
-
enum {
DRIVER_INITIALIZED = 0,
DRIVER_READY
};
/* All the possible states the board can be while booting up. */
-
enum {
BOARD_FAILED = 0,
BOARD_FOUND,
BOARD_READY
};
-/* Structures and closely related defines. */
-
struct dgnc_board;
struct channel_t;
-/* Per board operations structure */
-
+/**
+ * struct board_ops - Per board operations.
+ */
struct board_ops {
void (*tasklet)(unsigned long data);
irqreturn_t (*intr)(int irq, void *voidbrd);
#define BD_IS_PCI_EXPRESS 0x0001 /* Is a PCI Express board */
-/* Per-board information */
-
+/**
+ * struct dgnc_board - Per board information.
+ * @magic: Board magic number.
+ * @boardnum: Board number (0 - 32).
+ *
+ * @type: Type of board.
+ * @name: Product name.
+ * @pdev: Pointer to the pci_dev structure.
+ * @bd_flags: Board flags.
+ * @vendor: PCI vendor ID.
+ * @device: PCI device ID.
+ * @subvendor: PCI subsystem vendor ID.
+ * @subdevice: PCI subsystem device ID.
+ * @rev: PCI revision ID.
+ * @pci_bus: PCI bus value.
+ * @pci_slot: PCI slot value.
+ * @maxports: Maximum ports this board can handle.
+ * @dvid: Board specific device ID.
+ * @vpd: VPD of this board, if found.
+ * @serial_num: Serial number of this board, if found in VPD.
+ * @bd_lock: Used to protect board.
+ * @bd_intr_lock: Protect poller tasklet and interrupt routine from each other.
+ * @state: State of the card.
+ * @state_wait: Queue to sleep on for state change.
+ * @helper_tasklet: Poll helper tasklet.
+ * @nasync: Number of ports on card.
+ * @irq: Interrupt request number.
+ * @membase: Start of base memory of the card.
+ * @membase_end: End of base memory of the card.
+ * @iobase: Start of IO base of the card.
+ * @iobase_end: End of IO base of the card.
+ * @bd_uart_offset: Space between each UART.
+ * @channels: array of pointers to our channels.
+ * @serial_driver: Pointer to the serial driver.
+ * @serial_name: Serial driver name.
+ * @print_dirver: Pointer to the print driver.
+ * @print_name: Print driver name.
+ * @dpatype: Board type as defined by DPA.
+ * @dpastatus: Board status as defined by DPA.
+ * @bd_dividend: Board/UART's specific dividend.
+ * @bd_ops: Pointer to board operations structure.
+ * @proc_entry_pointer: Proc/<board> entry
+ * @dgnc_board_table: Proc/<board> entry
+ */
struct dgnc_board {
- int magic; /* Board Magic number. */
- int boardnum; /* Board number: 0-32 */
+ int magic;
+ int boardnum;
- int type; /* Type of board */
- char *name; /* Product Name */
- struct pci_dev *pdev; /* Pointer to the pci_dev struct */
- unsigned long bd_flags; /* Board flags */
- u16 vendor; /* PCI vendor ID */
- u16 device; /* PCI device ID */
- u16 subvendor; /* PCI subsystem vendor ID */
- u16 subdevice; /* PCI subsystem device ID */
- unsigned char rev; /* PCI revision ID */
- uint pci_bus; /* PCI bus value */
- uint pci_slot; /* PCI slot value */
- uint maxports; /* MAX ports this board can handle */
- unsigned char dvid; /* Board specific device id */
- unsigned char vpd[128]; /* VPD of board, if found */
- unsigned char serial_num[20]; /* Serial number of board,
- * if found in VPD
- */
+ int type;
+ char *name;
+ struct pci_dev *pdev;
+ unsigned long bd_flags;
+ u16 vendor;
+ u16 device;
+ u16 subvendor;
+ u16 subdevice;
+ unsigned char rev;
+ uint pci_bus;
+ uint pci_slot;
+ uint maxports;
+ unsigned char dvid;
+ unsigned char vpd[128];
+ unsigned char serial_num[20];
- spinlock_t bd_lock; /* Used to protect board */
+ /* used to protect the board */
+ spinlock_t bd_lock;
- spinlock_t bd_intr_lock; /* Used to protect the poller tasklet
- * and the interrupt routine from each
- * other.
- */
+ /* Protect poller tasklet and interrupt routine from each other. */
+ spinlock_t bd_intr_lock;
- uint state; /* State of card. */
- wait_queue_head_t state_wait; /* Place to sleep on for state change */
+ uint state;
+ wait_queue_head_t state_wait;
- struct tasklet_struct helper_tasklet; /* Poll helper tasklet */
+ struct tasklet_struct helper_tasklet;
- uint nasync; /* Number of ports on card */
+ uint nasync;
- uint irq; /* Interrupt request number */
+ uint irq;
- ulong membase; /* Start of base memory of the card */
- ulong membase_end; /* End of base memory of the card */
+ ulong membase;
+ ulong membase_end;
- u8 __iomem *re_map_membase; /* Remapped memory of the card */
+ u8 __iomem *re_map_membase;
- ulong iobase; /* Start of io base of the card */
- ulong iobase_end; /* End of io base of the card */
+ ulong iobase;
+ ulong iobase_end;
- uint bd_uart_offset; /* Space between each UART */
+ uint bd_uart_offset;
- struct channel_t *channels[MAXPORTS]; /* array of pointers
- * to our channels.
- */
+ struct channel_t *channels[MAXPORTS];
struct tty_driver *serial_driver;
char serial_name[200];
struct tty_driver *print_driver;
char print_name[200];
- u16 dpatype; /* The board "type",
- * as defined by DPA
- */
- u16 dpastatus; /* The board "status",
- * as defined by DPA
- */
+ u16 dpatype;
+ u16 dpastatus;
- uint bd_dividend; /* Board/UARTs specific dividend */
+ uint bd_dividend;
struct board_ops *bd_ops;
- /* /proc/<board> entries */
struct proc_dir_entry *proc_entry_pointer;
struct dgnc_proc_entry *dgnc_board_table;
struct device;
-/* Structure for terminal or printer unit. */
+/**
+ * struct un_t - terminal or printer unit
+ * @magic: Unit magic number.
+ * @un_open_count: Counter of opens to port.
+ * @un_tty: Pointer to unit tty structure.
+ * @un_flags: Unit flags.
+ * @un_flags_wait: Place to sleep to wait on unit.
+ * @un_dev: Minor device number.
+ */
struct un_t {
- int magic; /* Unit Magic Number. */
+ int magic;
struct channel_t *un_ch;
ulong un_time;
uint un_type;
- uint un_open_count; /* Counter of opens to port */
- struct tty_struct *un_tty; /* Pointer to unit tty structure */
- uint un_flags; /* Unit flags */
- wait_queue_head_t un_flags_wait; /* Place to sleep to wait on unit */
- uint un_dev; /* Minor device number */
+ uint un_open_count;
+ struct tty_struct *un_tty;
+ uint un_flags;
+ wait_queue_head_t un_flags_wait;
+ uint un_dev;
struct device *un_sysfs;
};
#define EQUEUESIZE RQUEUESIZE
#define WQUEUESIZE (WQUEUEMASK + 1)
-/* Channel information structure. */
+/**
+ * struct channel_t - Channel information.
+ * @magic: Channel magic number.
+ * @dgnc_board: Pointer to board structure.
+ * @ch_bd: Transparent print structure.
+ * @ch_tun: Terminal unit information.
+ * @ch_pun: Printer unit information.
+ * @ch_lock: Provide for serialization.
+ * @ch_flags_wait: Channel flags wait queue.
+ * @ch_portnum: Port number, 0 offset.
+ * @ch_open_count: Open count.
+ * @ch_flags: Channel flags.
+ * @ch_close_delay: How long we should drop RTS/DTR for.
+ * @ch_cpstime: Time for CPS calculations.
+ * @ch_c_iflag: Channel iflags.
+ * @ch_c_cflag: Channel cflags.
+ * @ch_c_oflag: Channel oflags.
+ * @ch_c_lflag: Channel lflags.
+ * @ch_stopc: Stop character.
+ * @ch_startc: Start character.
+ * @ch_old_baud: Cache of the current baud rate.
+ * @ch_custom_speed: Custom baud rate, if set.
+ * @ch_wopen: Waiting for open process count.
+ * @ch_mostat: FEP output modem status.
+ * @ch_mistat: FEP input modem status.
+ * @chc_neo_uart: Pointer to the mapped neo UART struct
+ * @ch_cls_uart: Pointer to the mapped cls UART struct
+ * @ch_cached_lsr: Cached value of the LSR register.
+ * @ch_rqueue: Read queue buffer, malloc'ed.
+ * @ch_r_head: Head location of the read queue.
+ * @ch_r_tail: Tail location of the read queue.
+ * @ch_equeue: Error queue buffer, malloc'ed.
+ * @ch_e_head: Head location of the error queue.
+ * @ch_e_tail: Tail location of the error queue.
+ * @ch_wqueue: Write queue buffer, malloc'ed.
+ * @ch_w_head: Head location of the write queue.
+ * @ch_w_tail: Tail location of the write queue.
+ * @ch_rxcount: Total of data received so far.
+ * @ch_txcount: Total of data transmitted so far.
+ * @ch_r_tlevel: Receive trigger level.
+ * @ch_t_tlevel: Transmit trigger level.
+ * @ch_r_watermark: Receive water mark.
+ * @ch_stop_sending_break: Time we should STOP sending a break.
+ * @ch_stops_sent: How many times I have send a stop character to try
+ * to stop the other guy sending.
+ * @ch_err_parity: Count of parity
+ * @ch_err_frame: Count of framing errors on channel.
+ * @ch_err_break: Count of breaks on channel.
+ * @ch_err_overrun: Count of overruns on channel.
+ * @ch_xon_sends: Count of xons transmitted.
+ * @ch_xoff_sends: Count of xoffs transmitted.
+ * @proc_entry_pointer: Proc/<board>/<channel> entry.
+ * @dgnc_channel_table: Proc/<board>/<channel> entry.
+ */
struct channel_t {
- int magic; /* Channel Magic Number */
- struct dgnc_board *ch_bd; /* Board structure pointer */
- struct digi_t ch_digi; /* Transparent Print structure */
- struct un_t ch_tun; /* Terminal unit info */
- struct un_t ch_pun; /* Printer unit info */
+ int magic;
+ struct dgnc_board *ch_bd;
+ struct digi_t ch_digi;
+ struct un_t ch_tun;
+ struct un_t ch_pun;
- spinlock_t ch_lock; /* provide for serialization */
+ spinlock_t ch_lock; /* provide for serialization */
wait_queue_head_t ch_flags_wait;
- uint ch_portnum; /* Port number, 0 offset. */
- uint ch_open_count; /* open count */
- uint ch_flags; /* Channel flags */
+ uint ch_portnum;
+ uint ch_open_count;
+ uint ch_flags;
- ulong ch_close_delay; /* How long we should
- * drop RTS/DTR for
- */
+ ulong ch_close_delay;
- ulong ch_cpstime; /* Time for CPS calculations */
+ ulong ch_cpstime;
- tcflag_t ch_c_iflag; /* channel iflags */
- tcflag_t ch_c_cflag; /* channel cflags */
- tcflag_t ch_c_oflag; /* channel oflags */
- tcflag_t ch_c_lflag; /* channel lflags */
- unsigned char ch_stopc; /* Stop character */
- unsigned char ch_startc; /* Start character */
+ tcflag_t ch_c_iflag;
+ tcflag_t ch_c_cflag;
+ tcflag_t ch_c_oflag;
+ tcflag_t ch_c_lflag;
+ unsigned char ch_stopc;
+ unsigned char ch_startc;
- uint ch_old_baud; /* Cache of the current baud */
- uint ch_custom_speed;/* Custom baud, if set */
+ uint ch_old_baud;
+ uint ch_custom_speed;
- uint ch_wopen; /* Waiting for open process cnt */
+ uint ch_wopen;
- unsigned char ch_mostat; /* FEP output modem status */
- unsigned char ch_mistat; /* FEP input modem status */
+ unsigned char ch_mostat;
+ unsigned char ch_mistat;
- struct neo_uart_struct __iomem *ch_neo_uart; /* Pointer to the
- * "mapped" UART struct
- */
- struct cls_uart_struct __iomem *ch_cls_uart; /* Pointer to the
- * "mapped" UART struct
- */
+ struct neo_uart_struct __iomem *ch_neo_uart;
+ struct cls_uart_struct __iomem *ch_cls_uart;
- unsigned char ch_cached_lsr; /* Cached value of the LSR register */
+ unsigned char ch_cached_lsr;
- unsigned char *ch_rqueue; /* Our read queue buffer - malloc'ed */
- ushort ch_r_head; /* Head location of the read queue */
- ushort ch_r_tail; /* Tail location of the read queue */
+ unsigned char *ch_rqueue;
+ ushort ch_r_head;
+ ushort ch_r_tail;
- unsigned char *ch_equeue; /* Our error queue buffer - malloc'ed */
- ushort ch_e_head; /* Head location of the error queue */
- ushort ch_e_tail; /* Tail location of the error queue */
+ unsigned char *ch_equeue;
+ ushort ch_e_head;
+ ushort ch_e_tail;
- unsigned char *ch_wqueue; /* Our write queue buffer - malloc'ed */
- ushort ch_w_head; /* Head location of the write queue */
- ushort ch_w_tail; /* Tail location of the write queue */
+ unsigned char *ch_wqueue;
+ ushort ch_w_head;
+ ushort ch_w_tail;
- ulong ch_rxcount; /* total of data received so far */
- ulong ch_txcount; /* total of data transmitted so far */
+ ulong ch_rxcount;
+ ulong ch_txcount;
- unsigned char ch_r_tlevel; /* Receive Trigger level */
- unsigned char ch_t_tlevel; /* Transmit Trigger level */
+ unsigned char ch_r_tlevel;
+ unsigned char ch_t_tlevel;
- unsigned char ch_r_watermark; /* Receive Watermark */
+ unsigned char ch_r_watermark;
- ulong ch_stop_sending_break; /* Time we should STOP
- * sending a break
- */
+ ulong ch_stop_sending_break;
+ uint ch_stops_sent;
- uint ch_stops_sent; /* How many times I have sent a stop
- * character to try to stop the other
- * guy sending.
- */
- ulong ch_err_parity; /* Count of parity errors on channel */
- ulong ch_err_frame; /* Count of framing errors on channel */
- ulong ch_err_break; /* Count of breaks on channel */
- ulong ch_err_overrun; /* Count of overruns on channel */
+ ulong ch_err_parity;
+ ulong ch_err_frame;
+ ulong ch_err_break;
+ ulong ch_err_overrun;
- ulong ch_xon_sends; /* Count of xons transmitted */
- ulong ch_xoff_sends; /* Count of xoffs transmitted */
+ ulong ch_xon_sends;
+ ulong ch_xoff_sends;
- /* /proc/<board>/<channel> entries */
struct proc_dir_entry *proc_entry_pointer;
struct dgnc_proc_entry *dgnc_channel_table;
};
-/* Our Global Variables. */
-
extern uint dgnc_major; /* Our driver/mgmt major */
extern int dgnc_poll_tick; /* Poll interval - 20 ms */
extern spinlock_t dgnc_global_lock; /* Driver global spinlock */
extern spinlock_t dgnc_poll_lock; /* Poll scheduling lock */
extern uint dgnc_num_boards; /* Total number of boards */
-extern struct dgnc_board *dgnc_board[MAXBOARDS];/* Array of board
- * structs
- */
+extern struct dgnc_board *dgnc_board[MAXBOARDS];/* Array of boards */
#endif
#define DIGI_SETAW (('e' << 8) | 96) /* Drain & set params */
#define DIGI_SETAF (('e' << 8) | 97) /* Drain, flush & set params */
#define DIGI_GET_NI_INFO (('d' << 8) | 250) /* Non-intelligent state info */
-#define DIGI_LOOPBACK (('d' << 8) | 252) /*
- * Enable/disable UART
+#define DIGI_LOOPBACK (('d' << 8) | 252) /* Enable/disable UART
* internal loopback
*/
#define DIGI_FAST 0x0002 /* Fast baud rates */
/*
* Structure used with ioctl commands for DIGI parameters.
*/
+/**
+ * struct digi_t - Ioctl commands for DIGI parameters.
+ * @digi_flags: Flags.
+ * @digi_maxcps: Maximum printer CPS.
+ * @digi_maxchar: Maximum characters in the print queue.
+ * @digi_bufsize: Buffer size.
+ * @digi_onlen: Length of ON string.
+ * @digi_offlen: Length of OFF string.
+ * @digi_onstr: Printer ON string.
+ * @digi_offstr: Printer OFF string.
+ * @digi_term: Terminal string.
+ */
struct digi_t {
- unsigned short digi_flags; /* Flags (see above) */
- unsigned short digi_maxcps; /* Max printer CPS */
- unsigned short digi_maxchar; /* Max chars in print queue */
- unsigned short digi_bufsize; /* Buffer size */
- unsigned char digi_onlen; /* Length of ON string */
- unsigned char digi_offlen; /* Length of OFF string */
- char digi_onstr[DIGI_PLEN]; /* Printer on string */
- char digi_offstr[DIGI_PLEN]; /* Printer off string */
- char digi_term[DIGI_TSIZ]; /* terminal string */
+ unsigned short digi_flags;
+ unsigned short digi_maxcps;
+ unsigned short digi_maxchar;
+ unsigned short digi_bufsize;
+ unsigned char digi_onlen;
+ unsigned char digi_offlen;
+ char digi_onstr[DIGI_PLEN];
+ char digi_offstr[DIGI_PLEN];
+ char digi_term[DIGI_TSIZ];
};
-/* Structure to get driver status information */
-
+/**
+ * struct digi_dinfo - Driver status information.
+ * @dinfo_nboards: Number of boards configured.
+ * @dinfo_reserved: Not used, for future expansion.
+ * @dinfio_version: Driver version.
+ */
struct digi_dinfo {
- unsigned int dinfo_nboards; /* # boards configured */
- char dinfo_reserved[12]; /* for future expansion */
- char dinfo_version[16]; /* driver version */
+ unsigned int dinfo_nboards;
+ char dinfo_reserved[12];
+ char dinfo_version[16];
};
#define DIGI_GETDD (('d' << 8) | 248) /* get driver info */
-/*
- * Structure used with ioctl commands for per-board information
+/**
+ * struct digi_info - Ioctl commands for per board information.
*
- * physsize and memsize differ when board has "windowed" memory
+ * Physsize and memsize differ when board has "windowed" memory.
+ *
+ * @info_bdnum: Board number (0 based).
+ * @info_ioport: IO port address.
+ * @indo_physaddr: Memory address.
+ * @info_physize: Size of host memory window.
+ * @info_memsize: Amount of dual-port memory on board.
+ * @info_bdtype: Board type.
+ * @info_nports: Number of ports.
+ * @info_bdstate: Board state.
+ * @info_reserved: Not used, for future expansion.
*/
struct digi_info {
- unsigned int info_bdnum; /* Board number (0 based) */
- unsigned int info_ioport; /* io port address */
- unsigned int info_physaddr; /* memory address */
- unsigned int info_physsize; /* Size of host mem window */
- unsigned int info_memsize; /* Amount of dual-port mem */
- /* on board */
- unsigned short info_bdtype; /* Board type */
- unsigned short info_nports; /* number of ports */
- char info_bdstate; /* board state */
- char info_reserved[7]; /* for future expansion */
+ unsigned int info_bdnum;
+ unsigned int info_ioport;
+ unsigned int info_physaddr;
+ unsigned int info_physsize;
+ unsigned int info_memsize;
+ unsigned short info_bdtype;
+ unsigned short info_nports;
+ char info_bdstate;
+ char info_reserved[7];
};
#define DIGI_GETBD (('d' << 8) | 249) /* get board info */
-struct digi_getbuffer /* Struct for holding buffer use counts */
-{
+/**
+ * struct digi_getbuffer - Holds buffer use counts.
+ */
+struct digi_getbuffer {
unsigned long tx_in;
unsigned long tx_out;
unsigned long rxbuf;
unsigned long txdone;
};
+/**
+ * struct digi_getcounter
+ * @norun: Number of UART overrun errors.
+ * @noflow: Number of buffer overflow errors.
+ * @nframe: Number of framing errors.
+ * @nparity: Number of parity errors.
+ * @nbreak: Number of breaks received.
+ * @rbytes: Number of received bytes.
+ * @tbytes: Number of transmitted bytes.
+ */
struct digi_getcounter {
- unsigned long norun; /* number of UART overrun errors */
- unsigned long noflow; /* number of buffer overflow errors */
- unsigned long nframe; /* number of framing errors */
- unsigned long nparity; /* number of parity errors */
- unsigned long nbreak; /* number of breaks received */
- unsigned long rbytes; /* number of received bytes */
- unsigned long tbytes; /* number of bytes transmitted fully */
+ unsigned long norun;
+ unsigned long noflow;
+ unsigned long nframe;
+ unsigned long nparity;
+ unsigned long nbreak;
+ unsigned long rbytes;
+ unsigned long tbytes;
};
/* Board State Definitions */
#define DIGI_REALPORT_GETCOUNTERS (('e' << 8) | 110)
#define DIGI_REALPORT_GETEVENTS (('e' << 8) | 111)
-#define EV_OPU 0x0001 /* !<Output paused by client */
-#define EV_OPS 0x0002 /* !<Output paused by regular sw flowctrl */
-#define EV_IPU 0x0010 /* !<Input paused unconditionally by user */
-#define EV_IPS 0x0020 /* !<Input paused by high/low water marks */
-#define EV_TXB 0x0040 /* !<Transmit break pending */
+#define EV_OPU 0x0001 /* Output paused by client */
+#define EV_OPS 0x0002 /* Output paused by regular sw flowctrl */
+#define EV_IPU 0x0010 /* Input paused unconditionally by user */
+#define EV_IPS 0x0020 /* Input paused by high/low water marks */
+#define EV_TXB 0x0040 /* Transmit break pending */
-/*
- * This structure holds data needed for the intelligent <--> nonintelligent
- * DPA translation
+/**
+ * struct ni_info - intelligent <--> non-intelligent DPA translation.
*/
struct ni_info {
int board;
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff