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C/C++ Source or Header | 1990-12-28 | 13.3 KB | 390 lines

/* This file contains various defines for the FAS async driver. If you change anything here you have to recompile the driver module. */ #ident "@(#)fas.h 2.06" #include <sys/param.h> #include <sys/types.h> #include <sys/signal.h> #include <sys/buf.h> #include <sys/iobuf.h> #include <sys/dir.h> #include <sys/user.h> #include <sys/errno.h> #include <sys/tty.h> #include <sys/conf.h> #include <sys/sysinfo.h> #include <sys/file.h> #include <sys/termio.h> #include <sys/ioctl.h> #include <macros.h> #if defined (TRUE) #undef TRUE #endif #define TRUE (1) #if defined (FALSE) #undef FALSE #endif #define FALSE (0) /* Uncomment the following line if you need init8250. DosMerge needs this function, but only if you link the kernel without the original asy driver. */ /* #define NEED_INIT8250 /* */ /* Uncomment the following line if you need asyputchar and asygetchar. Bell Tech needs these. uPort has them burried in the kd device. */ /* #define NEED_PUT_GETCHAR /* */ /* Initial line control register. Value will only be meaningful for asyputchar and asygetchar and they are only meaningful if NEED_PUT_GETCHAR is defined. */ #define INITIAL_LINE_CONTROL LC_WORDLEN_8 /* Initial baud rate. Value will only be meaningful for asyputchar and asygetchar and they are only meaningful if NEED_PUT_GETCHAR is defined. */ #define INITIAL_BAUD_RATE (BAUD_BASE/9600) /* Initial modem control register. This should probably not have to be touched. It is here because some terminals used as the console require one or more of the modem signals set. It is only meaningful for asyputchar and asygetchar and they are only meaningful if NEED_PUT_GETCHAR is defined. */ #define INITIAL_MDM_CONTROL 0 /****************************************************/ /* Nothing past this line should have to be changed */ /****************************************************/ #define NUM_INT_VECTORS 16 /* sixteen vectors possible but only the first eight are normally used */ #define MAX_UNITS 16 /* we will only use that many units */ /* Miscellaneous Constants */ #define BAUD_BASE (1843200 / 16) /* 115200 bps */ #define HANGUP_DELAY ((HZ) / 4) /* 250 msec */ #define HANGUP_TIME (HZ) /* 1 sec */ #define BREAK_TIME ((HZ) / 4) /* 250 msec */ #define ADAPT_TIME ((HZ) * 2) /* 2 sec */ #define RECV_BUFF_SIZE 5000 /* receiver ring buffer size (MAX) */ #define SW_LOW_WATER 2500 /* 50% MAX sw flow control */ #define SW_HIGH_WATER 4000 /* 80% MAX trigger levels */ #define HW_LOW_WATER 4500 /* MAX - 500 hw flow control */ #define HW_HIGH_WATER 4900 /* MAX - 100 trigger levels */ #define XMIT_BUFF_SIZE 2500 /* transmitter ring buffer size */ /* Here are the modem control flags for the fas_modem array in space.c. They are arranged in three 8-bit masks which are combined to a 32-bit word. Each of these 32-bit words represents one entry in the fas_modem array. The lowest byte is used as a mask to manipulate the modem control register for modem enable. Use the MC_* macros to build the mask. The second lowest byte is used to mask signals from the modem status register that will be used as the carrier detect signal. Use the MS_* macros to build the mask and shift them 8 bits to the left. If you use more than one signal, carrier is considered on only when all signals are on. The second highes byte is used to mask signals from the modem status register that will be used as the unblock signal. Use the MS_* macros to build the mask and shift them 16 bits to the left. If you use more than one signal, unblock occurs only when all signals are on. The highest byte is reserved for future use. Here are some useful macros for the space.c file. You may create your own macros if you have some special requirements not met by the predefined ones. */ /* modem enable (chose one) */ #define EN_RTS MC_SET_RTS /* RTS enables modem */ #define EN_DTR MC_SET_DTR /* DTR enables modem */ #define EN_RTS_AND_DTR (MC_SET_RTS | MC_SET_DTR) /* carrier detect signal (chose one) */ #define CA_DCD (MS_DCD_PRESENT << 8) /* DCD is carr. detect */ #define CA_CTS (MS_CTS_PRESENT << 8) /* CTS is carr. detect */ #define CA_DSR (MS_DSR_PRESENT << 8) /* DSR is carr. detect */ /* unblock signal (chose one) */ #define UB_DCD (MS_DCD_PRESENT << 16) /* DCD is unblock */ #define UB_RING (MS_RING_PRESENT << 16) /* RING is unblock */ /* Here are the hardware handshake flags for the fas_flow array in space.c. They are arranged in three 8-bit masks which are combined to a 32-bit word. Each of these 32-bit words represents one entry in the fas_flow array. The lowest byte is used as a mask to manipulate the modem control register for input flow control. Use the MC_* macros to build the mask. The second lowest byte is used to mask signals from the modem status register that will be used for output flow control. Use the MS_* macros to build the mask and shift them 8 bits to the left. If you use more than one signal, output is allowed only when all signals are on. The second highest byte is used to mask signals from the modem status register that will be used to enable the output flow control selected by the second lowest byte. Use the MS_* macros to build the mask and shift them 16 bits to the left. If you use more than one signal, output flow control is enabled only when all signals are on. The highest byte is reserved for future use. Here are some useful macros for the space.c file. You may create your own macros if you have some special requirements not met by the predefined ones. */ /* input flow control (chose one) */ #define HI_RTS MC_SET_RTS /* RTS input flow ctrl */ #define HI_DTR MC_SET_DTR /* DTR input flow ctrl */ #define HI_RTS_AND_DTR (MC_SET_RTS | MC_SET_DTR) /* output flow control (chose one) */ #define HO_CTS (MS_CTS_PRESENT << 8) /* CTS output flow ctrl */ #define HO_DSR (MS_DSR_PRESENT << 8) /* DSR output flow ctrl */ #define HO_CTS_AND_DSR ((MS_CTS_PRESENT | MS_DSR_PRESENT) << 8) #define HO_CTS_ON_DSR ((MS_CTS_PRESENT << 8) | (MS_DSR_PRESENT << 16)) #define HO_CTS_ON_DSR_AND_DCD ((MS_CTS_PRESENT << 8) \ | ((MS_DSR_PRESENT | MS_DCD_PRESENT) << 16)) /* define the local open flags */ #define OS_DEVICE_CLOSED 0x0000 #define OS_OPEN_FOR_DIALOUT 0x0001 #define OS_OPEN_FOR_GETTY 0x0002 #define OS_WAIT_OPEN 0x0004 #define OS_NO_DIALOUT 0x0008 #define OS_CHECK_CARR_ON_OPEN 0x0010 #define OS_FAKE_CARR_ON 0x0020 #define OS_UNBLOCK_ENABLE 0x0040 #define OS_CLOCAL 0x0080 #define OS_HW_HANDSHAKE 0x0100 #define OS_EXCLUSIVE_OPEN 0x0200 /* SYSV 3.2 Xenix compatibility */ #define OS_OPEN_STATES (OS_OPEN_FOR_DIALOUT | OS_OPEN_FOR_GETTY) #define OS_TEST_MASK (OS_OPEN_FOR_DIALOUT | OS_NO_DIALOUT \ | OS_CHECK_CARR_ON_OPEN | OS_FAKE_CARR_ON \ | OS_UNBLOCK_ENABLE | OS_CLOCAL \ | OS_HW_HANDSHAKE | OS_EXCLUSIVE_OPEN) /* define the device status flags */ #define DF_DEVICE_CONFIGURED 0x0001 /* device is configured */ #define DF_DEVICE_HAS_FIFO 0x0002 /* it's an NS16550 */ #define DF_DEVICE_OPEN 0x0004 /* physical device is open */ #define DF_DEVICE_LOCKED 0x0008 /* physical device locked */ #define DF_MODEM_ENABLED 0x0010 /* modem enabled */ #define DF_SWO_STOPPED 0x0020 /* output stopped by sw flow control */ #define DF_SWI_STOPPED 0x0040 /* input stopped by sw flow control */ #define DF_SW_FC_REQ 0x0080 /* sw input flow control request */ #define DF_HWO_STOPPED 0x0100 /* output stopped by hw handshake */ #define DF_HWI_STOPPED 0x0200 /* input stopped by hw handshake */ #define DF_XMIT_DISABLED 0x0400 /* transmitter is disabled */ #define DF_XMIT_BUSY 0x0800 /* transmitter is busy */ #define DF_DO_HANGUP 0x1000 /* delayed hangup request */ #define DF_DO_BREAK 0x2000 /* delayed break request */ #define DF_GUARD_TIMEOUT 0x4000 /* protect last char from corruption */ #define DF_ADAPT_TIMEOUT 0x8000 /* transmitter was used recently */ /* define an easy way to refenence the absolute port addresses */ #define RCV_DATA_PORT (fip->uart_port_0) #define XMT_DATA_PORT (fip->uart_port_0) #define INT_ENABLE_PORT (fip->uart_port_1) #define INT_ID_PORT (fip->uart_port_2) #define FIFO_CTL_PORT (fip->uart_port_2) #define LINE_CTL_PORT (fip->uart_port_3) #define MDM_CTL_PORT (fip->uart_port_4) #define LINE_STATUS_PORT (fip->uart_port_5) #define MDM_STATUS_PORT (fip->uart_port_6) #define DIVISOR_LSB_PORT (fip->uart_port_0) #define DIVISOR_MSB_PORT (fip->uart_port_1) #define INT_ACK_PORT (fip->int_ack_port) /* modem control port */ #define MC_SET_DTR 0x01 #define MC_SET_RTS 0x02 #define MC_SET_OUT1 0x04 #define MC_SET_OUT2 0x08 /* tristates int line when false */ #define MC_SET_LOOPBACK 0x10 /* modem status port */ #define MS_CTS_PRESENT 0x10 #define MS_DSR_PRESENT 0x20 #define MS_RING_PRESENT 0x40 #define MS_DCD_PRESENT 0x80 #define MS_ANY_PRESENT (MS_CTS_PRESENT | MS_DSR_PRESENT | MS_RING_PRESENT \ | MS_DCD_PRESENT) /* interrupt enable port */ #define IE_NONE 0x00 #define IE_RECV_DATA_AVAILABLE 0x01 #define IE_XMIT_HOLDING_BUFFER_EMPTY 0x02 #define IE_LINE_STATUS 0x04 #define IE_MODEM_STATUS 0x08 #define IE_INIT_MODE (IE_RECV_DATA_AVAILABLE | IE_XMIT_HOLDING_BUFFER_EMPTY \ | IE_LINE_STATUS | IE_MODEM_STATUS) /* interrupt id port */ #define II_NO_INTS_PENDING 0x01 #define II_CODE_MASK 0x07 #define II_MODEM_STATE 0x00 #define II_XMTD_CHAR 0x02 #define II_RCVD_CHAR 0x04 #define II_RCV_ERROR 0x06 #define II_FIFO_TIMEOUT 0x08 #define II_FIFO_ENABLED 0xC0 /* line control port */ #define LC_WORDLEN_MASK 0x03 #define LC_WORDLEN_5 0x00 #define LC_WORDLEN_6 0x01 #define LC_WORDLEN_7 0x02 #define LC_WORDLEN_8 0x03 #define LC_STOPBITS_LONG 0x04 #define LC_ENABLE_PARITY 0x08 #define LC_EVEN_PARITY 0x10 #define LC_STICK_PARITY 0x20 #define LC_SET_BREAK_LEVEL 0x40 #define LC_ENABLE_DIVISOR 0x80 /* line status port */ #define LS_RCV_AVAIL 0x01 #define LS_OVERRUN 0x02 #define LS_PARITY_ERROR 0x04 #define LS_FRAMING_ERROR 0x08 #define LS_BREAK_DETECTED 0x10 #define LS_XMIT_AVAIL 0x20 #define LS_XMIT_COMPLETE 0x40 #define LS_ERROR_IN_FIFO 0x80 /* NS16550 only */ #define LS_RCV_INT (LS_RCV_AVAIL | LS_OVERRUN | LS_PARITY_ERROR \ | LS_FRAMING_ERROR | LS_BREAK_DETECTED) /* fifo control port (NS16550 only) */ #define FIFO_ENABLE 0x01 #define FIFO_CLR_RECV 0x02 #define FIFO_CLR_XMIT 0x04 #define FIFO_START_DMA 0x08 #define FIFO_SIZE_1 0x00 #define FIFO_SIZE_4 0x40 #define FIFO_SIZE_8 0x80 #define FIFO_SIZE_14 0xC0 #define FIFO_SIZE_MASK 0xC0 #define STANDARD_FIFO_CLEAR 0 #define STANDARD_FIFO_SETUP (FIFO_SIZE_8 | FIFO_ENABLE) #define STANDARD_FIFO_INIT (STANDARD_FIFO_SETUP | FIFO_CLR_RECV \ | FIFO_CLR_XMIT) #define INPUT_FIFO_SIZE 16 #define OUTPUT_FIFO_SIZE 16 /* This structure contains everything one would like to know about an open device. There is one of these for each physical unit. We use several unions to eliminate most integer type conversions at run-time. The standard UNIX V 3.X/386 C compiler forces all operands in expressions and all function parameters to type int. To save some time, with the means of unions we deliver type int at the proper locations while dealing with the original type wherever int would be slower. This is highly compiler implementation specific. But for the sake of speed the end justifies the means. */ struct fas_info { struct tty *tty; /* the tty structure */ struct fas_info *prev_int_user;/* link to previous fas_info struct */ struct fas_info *next_int_user;/* link to next fas_info struct */ uint vec; /* interrupt vector for this struct */ uint iflag; /* current terminal input flags */ uint cflag; /* current terminal hardware control flags */ union { /* flags about the device */ ushort s; uint i; } device_flags; uint o_state; /* current open state */ uint po_state; /* previous open state */ union { /* modem control masks */ struct { unchar en; /* mask for modem enable */ unchar ca; /* mask for carrier detect */ unchar ub; /* mask for unblock signal */ } m; uint i; } modem; union { /* hardware flow control masks */ struct { unchar ic; /* control mask for inp. flow ctrl */ unchar oc; /* control mask for outp. flow ctrl */ unchar oe; /* enable mask for outp. flow ctrl */ } m; uint i; } flow; uint msr; /* modem status register value */ union { /* modem control register value */ unchar c; uint i; } mcr; union { /* line control register value */ unchar c; uint i; } lcr; union { /* interrupt enable register value */ unchar c; uint i; } ier; uint timeout_idx; /* timeout index for untimeout () */ uint uart_port_0; /* uart port 0 address */ uint uart_port_1; /* uart port 1 address */ uint uart_port_2; /* uart port 2 address */ uint uart_port_3; /* uart port 3 address */ uint uart_port_4; /* uart port 4 address */ uint uart_port_5; /* uart port 5 address */ uint uart_port_6; /* uart port 6 address */ uint int_ack_port; /* int ack port address */ uint int_ack; /* int ack value */ uint recv_ring_cnt; /* receiver ring buffer counter */ unchar *recv_ring_put_ptr; /* recv ring buf put ptr */ unchar *recv_ring_take_ptr; /* recv ring buf take ptr */ uint xmit_ring_size; /* transmitter ring buffer size */ uint xmit_ring_cnt; /* transmitter ring buffer counter */ unchar *xmit_ring_put_ptr; /* xmit ring buf put ptr */ unchar *xmit_ring_take_ptr; /* xmit ring buf take ptr */ unchar recv_buffer [RECV_BUFF_SIZE]; /* recv ring buf */ unchar xmit_buffer [XMIT_BUFF_SIZE]; /* xmit ring buf */ };