From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/staging/dgnc/dgnc_driver.h | 400 +++++++++++++++++++++++++++++++++++++ 1 file changed, 400 insertions(+) create mode 100644 drivers/staging/dgnc/dgnc_driver.h (limited to 'drivers/staging/dgnc/dgnc_driver.h') diff --git a/drivers/staging/dgnc/dgnc_driver.h b/drivers/staging/dgnc/dgnc_driver.h new file mode 100644 index 000000000..f77fed57b --- /dev/null +++ b/drivers/staging/dgnc/dgnc_driver.h @@ -0,0 +1,400 @@ +/* + * Copyright 2003 Digi International (www.digi.com) + * Scott H Kilau + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * 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 +#define __DGNC_DRIVER_H + +#include /* To pick up the varions Linux types */ +#include /* To pick up the various tty structs/defines */ +#include /* For irqreturn_t type */ + +#include "digi.h" /* Digi specific ioctl header */ +#include "dgnc_sysfs.h" /* Support for SYSFS */ + +/************************************************************************* + * + * Driver defines + * + *************************************************************************/ + +/* Driver identification and error statments */ +#define PROCSTR "dgnc" /* /proc entries */ +#define DEVSTR "/dev/dg/dgnc" /* /dev entries */ +#define DRVSTR "dgnc" /* Driver name string */ +#define DG_PART "40002369_F" /* RPM part number */ + +#define TRC_TO_CONSOLE 1 + +/* Number of boards we support at once. */ +#define MAXBOARDS 20 +#define MAXPORTS 8 +#define MAXTTYNAMELEN 200 + +/* Our 3 magic numbers for our board, channel and unit structs */ +#define DGNC_BOARD_MAGIC 0x5c6df104 +#define DGNC_CHANNEL_MAGIC 0x6c6df104 +#define DGNC_UNIT_MAGIC 0x7c6df104 + +/* Serial port types */ +#define DGNC_SERIAL 0 +#define DGNC_PRINT 1 + +#define SERIAL_TYPE_NORMAL 1 + +#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 */ +#define MAX_STOPS_SENT 5 + +/* 4 extra for alignment play space */ +#define WRITEBUFLEN ((4096) + 4) +#define MYFLIPLEN N_TTY_BUF_SIZE + +#define dgnc_jiffies_from_ms(a) (((a) * HZ) / 1000) + +/* + * Define a local default termios struct. All ports will be created + * with this termios initially. This is the same structure that is defined + * as the default in tty_io.c with the same settings overriden as in serial.c + * + * In short, this should match the internal serial ports' defaults. + */ +#define DEFAULT_IFLAGS (ICRNL | IXON) +#define DEFAULT_OFLAGS (OPOST | ONLCR) +#define DEFAULT_CFLAGS (B9600 | CS8 | CREAD | HUPCL | CLOCAL) +#define DEFAULT_LFLAGS (ISIG | ICANON | ECHO | ECHOE | ECHOK | \ + ECHOCTL | ECHOKE | IEXTEN) + +#ifndef _POSIX_VDISABLE +#define _POSIX_VDISABLE '\0' +#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 { + void (*tasklet)(unsigned long data); + irqreturn_t (*intr)(int irq, void *voidbrd); + void (*uart_init)(struct channel_t *ch); + void (*uart_off)(struct channel_t *ch); + int (*drain)(struct tty_struct *tty, uint seconds); + void (*param)(struct tty_struct *tty); + void (*vpd)(struct dgnc_board *brd); + void (*assert_modem_signals)(struct channel_t *ch); + void (*flush_uart_write)(struct channel_t *ch); + void (*flush_uart_read)(struct channel_t *ch); + void (*disable_receiver)(struct channel_t *ch); + void (*enable_receiver)(struct channel_t *ch); + void (*send_break)(struct channel_t *ch, int); + void (*send_start_character)(struct channel_t *ch); + void (*send_stop_character)(struct channel_t *ch); + void (*copy_data_from_queue_to_uart)(struct channel_t *ch); + uint (*get_uart_bytes_left)(struct channel_t *ch); + void (*send_immediate_char)(struct channel_t *ch, unsigned char); +}; + +/************************************************************************ + * Device flag definitions for bd_flags. + ************************************************************************/ +#define BD_IS_PCI_EXPRESS 0x0001 /* Is a PCI Express board */ + + +/* + * Per-board information + */ +struct dgnc_board { + int magic; /* Board Magic number. */ + int boardnum; /* Board number: 0-32 */ + + 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 */ + + spinlock_t bd_lock; /* Used to protect board */ + + spinlock_t bd_intr_lock; /* Used to protect the poller tasklet and + * the interrupt routine from each other. + */ + + uint state; /* State of card. */ + wait_queue_head_t state_wait; /* Place to sleep on for state change */ + + struct tasklet_struct helper_tasklet; /* Poll helper tasklet */ + + uint nasync; /* Number of ports on card */ + + uint irq; /* Interrupt request number */ + ulong intr_count; /* Count of interrupts */ + ulong intr_modem; /* Count of interrupts */ + ulong intr_tx; /* Count of interrupts */ + ulong intr_rx; /* Count of interrupts */ + + ulong membase; /* Start of base memory of the card */ + ulong membase_end; /* End of base memory of the card */ + + u8 __iomem *re_map_membase;/* Remapped memory of the card */ + + ulong iobase; /* Start of io base of the card */ + ulong iobase_end; /* End of io base of the card */ + + uint bd_uart_offset; /* Space between each UART */ + + struct channel_t *channels[MAXPORTS]; /* array of pointers to our channels. */ + + struct tty_driver SerialDriver; + char SerialName[200]; + struct tty_driver PrintDriver; + char PrintName[200]; + + bool dgnc_Major_Serial_Registered; + bool dgnc_Major_TransparentPrint_Registered; + + uint dgnc_Serial_Major; + uint dgnc_TransparentPrint_Major; + + uint TtyRefCnt; + + char *flipbuf; /* Our flip buffer, alloced if board is found */ + + u16 dpatype; /* The board "type", as defined by DPA */ + u16 dpastatus; /* The board "status", as defined by DPA */ + + /* + * Mgmt data. + */ + char *msgbuf_head; + char *msgbuf; + + uint bd_dividend; /* Board/UARTs specific dividend */ + + struct board_ops *bd_ops; + + /* /proc/ entries */ + struct proc_dir_entry *proc_entry_pointer; + struct dgnc_proc_entry *dgnc_board_table; + +}; + + +/************************************************************************ + * Unit flag definitions for un_flags. + ************************************************************************/ +#define UN_ISOPEN 0x0001 /* Device is open */ +#define UN_CLOSING 0x0002 /* Line is being closed */ +#define UN_IMM 0x0004 /* Service immediately */ +#define UN_BUSY 0x0008 /* Some work this channel */ +#define UN_BREAKI 0x0010 /* Input break received */ +#define UN_PWAIT 0x0020 /* Printer waiting for terminal */ +#define UN_TIME 0x0040 /* Waiting on time */ +#define UN_EMPTY 0x0080 /* Waiting output queue empty */ +#define UN_LOW 0x0100 /* Waiting output low water mark*/ +#define UN_EXCL_OPEN 0x0200 /* Open for exclusive use */ +#define UN_WOPEN 0x0400 /* Device waiting for open */ +#define UN_WIOCTL 0x0800 /* Device waiting for open */ +#define UN_HANGUP 0x8000 /* Carrier lost */ + +struct device; + +/************************************************************************ + * Structure for terminal or printer unit. + ************************************************************************/ +struct un_t { + int magic; /* Unit Magic Number. */ + 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 */ + struct device *un_sysfs; +}; + + +/************************************************************************ + * Device flag definitions for ch_flags. + ************************************************************************/ +#define CH_PRON 0x0001 /* Printer on string */ +#define CH_STOP 0x0002 /* Output is stopped */ +#define CH_STOPI 0x0004 /* Input is stopped */ +#define CH_CD 0x0008 /* Carrier is present */ +#define CH_FCAR 0x0010 /* Carrier forced on */ +#define CH_HANGUP 0x0020 /* Hangup received */ + +#define CH_RECEIVER_OFF 0x0040 /* Receiver is off */ +#define CH_OPENING 0x0080 /* Port in fragile open state */ +#define CH_CLOSING 0x0100 /* Port in fragile close state */ +#define CH_FIFO_ENABLED 0x0200 /* Port has FIFOs enabled */ +#define CH_TX_FIFO_EMPTY 0x0400 /* TX Fifo is completely empty */ +#define CH_TX_FIFO_LWM 0x0800 /* TX Fifo is below Low Water */ +#define CH_BREAK_SENDING 0x1000 /* Break is being sent */ +#define CH_LOOPBACK 0x2000 /* Channel is in lookback mode */ +#define CH_FLIPBUF_IN_USE 0x4000 /* Channel's flipbuf is in use */ +#define CH_BAUD0 0x08000 /* Used for checking B0 transitions */ +#define CH_FORCED_STOP 0x20000 /* Output is forcibly stopped */ +#define CH_FORCED_STOPI 0x40000 /* Input is forcibly stopped */ + + +/* Our Read/Error/Write queue sizes */ +#define RQUEUEMASK 0x1FFF /* 8 K - 1 */ +#define EQUEUEMASK 0x1FFF /* 8 K - 1 */ +#define WQUEUEMASK 0x0FFF /* 4 K - 1 */ +#define RQUEUESIZE (RQUEUEMASK + 1) +#define EQUEUESIZE RQUEUESIZE +#define WQUEUESIZE (WQUEUEMASK + 1) + + +/************************************************************************ + * Channel information structure. + ************************************************************************/ +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 */ + + 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 */ + + ulong ch_close_delay; /* How long we should drop RTS/DTR for */ + + ulong ch_cpstime; /* Time for CPS calculations */ + + 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 */ + + uint ch_old_baud; /* Cache of the current baud */ + uint ch_custom_speed;/* Custom baud, if set */ + + uint ch_wopen; /* Waiting for open process cnt */ + + unsigned char ch_mostat; /* FEP output modem status */ + unsigned char ch_mistat; /* FEP input modem status */ + + 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 */ + + unsigned char ch_cached_lsr; /* Cached value of the LSR register */ + + 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_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_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 */ + + ulong ch_rxcount; /* total of data received so far */ + ulong ch_txcount; /* total of data transmitted so far */ + + unsigned char ch_r_tlevel; /* Receive Trigger level */ + unsigned char ch_t_tlevel; /* Transmit Trigger level */ + + unsigned char ch_r_watermark; /* Receive Watermark */ + + ulong ch_stop_sending_break; /* Time we should STOP sending a break */ + + 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_xon_sends; /* Count of xons transmitted */ + ulong ch_xoff_sends; /* Count of xoffs transmitted */ + + ulong ch_intr_modem; /* Count of interrupts */ + ulong ch_intr_tx; /* Count of interrupts */ + ulong ch_intr_rx; /* Count of interrupts */ + + + /* /proc// 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 uint dgnc_NumBoards; /* Total number of boards */ +extern struct dgnc_board *dgnc_Board[MAXBOARDS]; /* Array of board structs */ + +#endif -- cgit v1.2.3-54-g00ecf