///////////////////////////////////////////////////////////////////////// // $Id$ ///////////////////////////////////////////////////////////////////////// // // Copyright (C) 2001-2021 The Bochs Project // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA // #ifndef BX_IODEV_SERIAL_H #define BX_IODEV_SERIAL_H // Peter Grehan (grehan@iprg.nokia.com) coded most of this // serial emulation. #if BX_USE_SER_SMF # define BX_SER_SMF static # define BX_SER_THIS theSerialDevice-> #else # define BX_SER_SMF # define BX_SER_THIS this-> #endif #ifdef BX_SER_WIN32 #define SERIAL_ENABLE #endif #if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__) || defined(__APPLE__) || defined(__sun__) || defined(__CYGWIN__) #define SERIAL_ENABLE extern "C" { #include }; #endif #define BX_SERIAL_MAXDEV 4 #define BX_PC_CLOCK_XTL 1843200.0 #define BX_SER_RXIDLE 0 #define BX_SER_RXPOLL 1 #define BX_SER_RXWAIT 2 #define BX_SER_THR 0 #define BX_SER_RBR 0 #define BX_SER_IER 1 #define BX_SER_IIR 2 #define BX_SER_FCR 2 #define BX_SER_LCR 3 #define BX_SER_MCR 4 #define BX_SER_LSR 5 #define BX_SER_MSR 6 #define BX_SER_SCR 7 #define BX_SER_MODE_NULL 0 #define BX_SER_MODE_FILE 1 #define BX_SER_MODE_TERM 2 #define BX_SER_MODE_RAW 3 #define BX_SER_MODE_MOUSE 4 #define BX_SER_MODE_SOCKET_CLIENT 5 #define BX_SER_MODE_SOCKET_SERVER 6 #define BX_SER_MODE_PIPE_CLIENT 7 #define BX_SER_MODE_PIPE_SERVER 8 enum { BX_SER_INT_IER, BX_SER_INT_RXDATA, BX_SER_INT_TXHOLD, BX_SER_INT_RXLSTAT, BX_SER_INT_MODSTAT, BX_SER_INT_FIFO }; #if USE_RAW_SERIAL class serial_raw; #endif typedef struct { /* * UART internal state */ bool ls_interrupt; bool ms_interrupt; bool rx_interrupt; bool tx_interrupt; bool fifo_interrupt; bool ls_ipending; bool ms_ipending; bool rx_ipending; bool fifo_ipending; Bit8u IRQ; Bit8u rx_fifo_end; Bit8u tx_fifo_end; int baudrate; Bit32u databyte_usec; int rx_timer_index; int tx_timer_index; int fifo_timer_index; int io_mode; int tty_id; SOCKET socket_id; FILE *output; bx_param_string_c *file; #ifdef BX_SER_WIN32 HANDLE pipe; #endif #if USE_RAW_SERIAL serial_raw* raw; #endif #if defined(SERIAL_ENABLE) && !defined(BX_SER_WIN32) struct termios term_orig, term_new; #endif /* * Register definitions */ Bit8u rxbuffer; /* receiver buffer register (r/o) */ Bit8u thrbuffer; /* transmit holding register (w/o) */ /* Interrupt Enable Register */ struct { bool rxdata_enable; /* 1=enable receive data interrupts */ bool txhold_enable; /* 1=enable tx. holding reg. empty ints */ bool rxlstat_enable; /* 1=enable rx line status interrupts */ bool modstat_enable; /* 1=enable modem status interrupts */ } int_enable; /* Interrupt Identification Register (r/o) */ struct { bool ipending; /* 0=interrupt pending */ Bit8u int_ID; /* 3-bit interrupt ID */ } int_ident; /* FIFO Control Register (w/o) */ struct { bool enable; /* 1=enable tx and rx FIFOs */ Bit8u rxtrigger; /* 2-bit code for rx fifo trigger level */ } fifo_cntl; /* Line Control Register (r/w) */ struct { Bit8u wordlen_sel; /* 2-bit code for char length */ bool stopbits; /* select stop bit len */ bool parity_enable; /* ... */ bool evenparity_sel; /* ... */ bool stick_parity; /* ... */ bool break_cntl; /* 1=send break signal */ bool dlab; /* divisor latch access bit */ } line_cntl; /* MODEM Control Register (r/w) */ struct { bool dtr; /* DTR output value */ bool rts; /* RTS output value */ bool out1; /* OUTPUT1 value */ bool out2; /* OUTPUT2 value */ bool local_loopback; /* 1=loopback mode */ } modem_cntl; /* Line Status Register (r/w) */ struct { bool rxdata_ready; /* 1=receiver data ready */ bool overrun_error; /* 1=receive overrun detected */ bool parity_error; /* 1=rx char has a bad parity bit */ bool framing_error; /* 1=no stop bit detected for rx char */ bool break_int; /* 1=break signal detected */ bool thr_empty; /* 1=tx hold register (or fifo) is empty */ bool tsr_empty; /* 1=shift reg and hold reg empty */ bool fifo_error; /* 1=at least 1 err condition in fifo */ } line_status; /* Modem Status Register (r/w) */ struct { bool delta_cts; /* 1=CTS changed since last read */ bool delta_dsr; /* 1=DSR changed since last read */ bool ri_trailedge; /* 1=RI moved from low->high */ bool delta_dcd; /* 1=CD changed since last read */ bool cts; /* CTS input value */ bool dsr; /* DSR input value */ bool ri; /* RI input value */ bool dcd; /* DCD input value */ } modem_status; Bit8u scratch; /* Scratch Register (r/w) */ Bit8u tsrbuffer; /* transmit shift register (internal) */ Bit8u rx_fifo[16]; /* receive FIFO (internal) */ Bit8u tx_fifo[16]; /* transmit FIFO (internal) */ Bit8u divisor_lsb; /* Divisor latch, least-sig. byte */ Bit8u divisor_msb; /* Divisor latch, most-sig. byte */ } bx_serial_t; class bx_serial_c : public bx_devmodel_c { public: bx_serial_c(); virtual ~bx_serial_c(); virtual void init(void); virtual void reset(unsigned type) {} virtual void register_state(void); private: bx_serial_t s[BX_SERIAL_MAXDEV]; int detect_mouse; int mouse_port; int mouse_type; int mouse_delayed_dx; int mouse_delayed_dy; int mouse_delayed_dz; Bit8u mouse_buttons; bool mouse_update; struct { int num_elements; Bit8u buffer[BX_MOUSE_BUFF_SIZE]; int head; } mouse_internal_buffer; static void lower_interrupt(Bit8u port); static void raise_interrupt(Bit8u port, int type); static void rx_fifo_enq(Bit8u port, Bit8u data); static void tx_timer_handler(void *); BX_SER_SMF void tx_timer(void); static void rx_timer_handler(void *); BX_SER_SMF void rx_timer(void); static void fifo_timer_handler(void *); BX_SER_SMF void fifo_timer(void); static void mouse_enq_static(void *dev, int delta_x, int delta_y, int delta_z, unsigned button_state, bool absxy); void mouse_enq(int delta_x, int delta_y, int delta_z, unsigned button_state, bool absxy); void update_mouse_data(void); static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len); static void write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len); #if !BX_USE_SER_SMF Bit32u read(Bit32u address, unsigned io_len); void write(Bit32u address, Bit32u value, unsigned io_len); #endif static const char* serial_file_param_handler(bx_param_string_c *param, bool set, const char *oldval, const char *val, int maxlen); }; #endif