diff options
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/i386/shared/comm/uart.c | 126 |
1 files changed, 63 insertions, 63 deletions
diff --git a/c/src/lib/libbsp/i386/shared/comm/uart.c b/c/src/lib/libbsp/i386/shared/comm/uart.c index d8d0a1b29b..bc5e805c4e 100644 --- a/c/src/lib/libbsp/i386/shared/comm/uart.c +++ b/c/src/lib/libbsp/i386/shared/comm/uart.c @@ -33,10 +33,10 @@ struct uart_data static struct uart_data uart_data[2]; -/* +/* * Macros to read/write register of uart, if configuration is * different just rewrite these macros - */ + */ static inline unsigned char uread(int uart, unsigned int reg) @@ -52,7 +52,7 @@ uread(int uart, unsigned int reg) return val; } -static inline void +static inline void uwrite(int uart, int reg, unsigned int val) { if (uart == 0) { @@ -87,13 +87,13 @@ uartError(int uart) inline void uartError(int uart) { unsigned char uartStatus; - + uartStatus = uread(uart, LSR); uartStatus = uread(uart, RBR); } #endif -/* +/* * Uart initialization, it is hardcoded to 8 bit, no parity, * one stop bit, FIFO, things to be changed * are baud rate and nad hw flow control, @@ -111,10 +111,10 @@ BSP_uart_init ) { unsigned char tmp; - + /* Sanity check */ assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - + switch(baud) { case 50: @@ -135,23 +135,23 @@ BSP_uart_init assert(0); return; } - + /* Set DLAB bit to 1 */ uwrite(uart, LCR, DLAB); - + /* Set baud rate */ - uwrite(uart, DLL, (BSPBaseBaud/baud) & 0xff); - uwrite(uart, DLM, ((BSPBaseBaud/baud) >> 8) & 0xff); + uwrite(uart, DLL, (BSPBaseBaud/baud) & 0xff); + uwrite(uart, DLM, ((BSPBaseBaud/baud) >> 8) & 0xff); /* 8-bit, no parity , 1 stop */ uwrite(uart, LCR, databits | parity | stopbits); - + /* Set DTR, RTS and OUT2 high */ uwrite(uart, MCR, DTR | RTS | OUT_2); /* Enable FIFO */ - uwrite(uart, FCR, FIFO_EN | XMIT_RESET | RCV_RESET | RECEIVE_FIFO_TRIGGER12); + uwrite(uart, FCR, FIFO_EN | XMIT_RESET | RCV_RESET | RECEIVE_FIFO_TRIGGER12); /* Disable Interrupts */ uwrite(uart, IER, 0); @@ -170,12 +170,12 @@ BSP_uart_init return; } -/* +/* * Set baud */ void -BSP_uart_set_baud( +BSP_uart_set_baud( int uart, unsigned long baud ) @@ -183,7 +183,7 @@ BSP_uart_set_baud( /* Sanity check */ assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - BSP_uart_set_attributes( uart, baud, uart_data[uart].databits, + BSP_uart_set_attributes( uart, baud, uart_data[uart].databits, uart_data[uart].parity, uart_data[uart].stopbits ); } @@ -205,10 +205,10 @@ BSP_uart_set_attributes /* Sanity check */ assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - - /* + + /* * This function may be called whenever TERMIOS parameters - * are changed, so we have to make sure that baud change is + * are changed, so we have to make sure that baud change is * indeed required */ @@ -227,14 +227,14 @@ BSP_uart_set_attributes uwrite(uart, MCR, mcr); uwrite(uart, IER, ier); - + return; } /* - * Enable/disable interrupts + * Enable/disable interrupts */ -void +void BSP_uart_intr_ctrl(int uart, int cmd) { int iStatus = (int)INTERRUPT_DISABLE; @@ -262,7 +262,7 @@ BSP_uart_intr_ctrl(int uart, int cmd) uart_data[uart].ier = iStatus; uwrite(uart, IER, iStatus); - + return; } @@ -270,7 +270,7 @@ void BSP_uart_throttle(int uart) { unsigned int mcr; - + assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); if(!uart_data[uart].hwFlow) @@ -312,12 +312,12 @@ BSP_uart_unthrottle(int uart) * Status function, -1 if error * detected, 0 if no received chars available, * 1 if received char available, 2 if break - * is detected, it will eat break and error - * chars. It ignores overruns - we cannot do + * is detected, it will eat break and error + * chars. It ignores overruns - we cannot do * anything about - it execpt count statistics * and we are not counting it. */ -int +int BSP_uart_polled_status(int uart) { unsigned char val; @@ -335,7 +335,7 @@ BSP_uart_polled_status(int uart) if((val & (DR | OE | FE)) == 1) { - /* No error, character present */ + /* No error, character present */ return BSP_UART_STATUS_CHAR; } @@ -345,12 +345,12 @@ BSP_uart_polled_status(int uart) return BSP_UART_STATUS_NOCHAR; } - /* + /* * Framing or parity error * eat character */ uread(uart, RBR); - + return BSP_UART_STATUS_ERROR; } @@ -358,14 +358,14 @@ BSP_uart_polled_status(int uart) /* * Polled mode write function */ -void +void BSP_uart_polled_write(int uart, int val) { unsigned char val1; - + /* Sanity check */ assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - + for(;;) { if((val1=uread(uart, LSR)) & THRE) @@ -386,7 +386,7 @@ BSP_uart_polled_write(int uart, int val) } uwrite(uart, THR, val & 0xff); - + /* * Wait for character to be transmitted. * This ensures that printk and printf play nicely together @@ -413,16 +413,16 @@ BSP_output_char_via_serial(int val) if (val == '\n') BSP_uart_polled_write(BSPConsolePort,'\r'); } -/* +/* * Polled mode read function */ -int +int BSP_uart_polled_read(int uart) { unsigned char val; assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - + for(;;) { if(uread(uart, LSR) & DR) @@ -430,13 +430,13 @@ BSP_uart_polled_read(int uart) break; } } - + val = uread(uart, RBR); return (int)(val & 0xff); } -unsigned +unsigned BSP_poll_char_via_serial() { return BSP_uart_polled_read(BSPConsolePort); @@ -480,7 +480,7 @@ void uart_set_driver_handler( int port, void ( *handler )( void *, char *, int /* - * Set channel parameters + * Set channel parameters */ void BSP_uart_termios_set(int uart, void *ttyp) @@ -488,7 +488,7 @@ BSP_uart_termios_set(int uart, void *ttyp) struct rtems_termios_tty *p = (struct rtems_termios_tty *)ttyp; unsigned char val; assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - + if(uart == BSP_UART_COM1) { uart_data[uart].ioMode = p->device.outputUsesInterrupts; @@ -504,7 +504,7 @@ BSP_uart_termios_set(int uart, void *ttyp) } termios_tx_active_com1 = 0; termios_ttyp_com1 = ttyp; - termios_tx_hold_com1 = 0; + termios_tx_hold_com1 = 0; termios_tx_hold_valid_com1 = 0; } else @@ -522,7 +522,7 @@ BSP_uart_termios_set(int uart, void *ttyp) } termios_tx_active_com2 = 0; termios_ttyp_com2 = ttyp; - termios_tx_hold_com2 = 0; + termios_tx_hold_com2 = 0; termios_tx_hold_valid_com2 = 0; } @@ -657,7 +657,7 @@ BSP_uart_termios_isr_com1(void) for(;;) { vect = uread(BSP_UART_COM1, IIR) & 0xf; - + switch(vect) { case MODEM_STATUS : @@ -690,7 +690,7 @@ BSP_uart_termios_isr_com1(void) if( driver_input_handler_com1 ) { driver_input_handler_com1( termios_ttyp_com1, (char *)buf, off ); - } + } else { /* Update rx buffer */ @@ -699,9 +699,9 @@ BSP_uart_termios_isr_com1(void) } return; case TRANSMITTER_HODING_REGISTER_EMPTY : - /* - * TX holding empty: we have to disable these interrupts - * if there is nothing more to send. + /* + * TX holding empty: we have to disable these interrupts + * if there is nothing more to send. */ /* If nothing else to send disable interrupts */ @@ -740,7 +740,7 @@ BSP_uart_termios_isr_com1(void) } } } - + void BSP_uart_termios_isr_com2() { @@ -753,7 +753,7 @@ BSP_uart_termios_isr_com2() for(;;) { vect = uread(BSP_UART_COM2, IIR) & 0xf; - + switch(vect) { case MODEM_STATUS : @@ -786,7 +786,7 @@ BSP_uart_termios_isr_com2() if( driver_input_handler_com2 ) { driver_input_handler_com2( termios_ttyp_com2, (char *)buf, off ); - } + } else { rtems_termios_enqueue_raw_characters(termios_ttyp_com2, (char *)buf, off); @@ -794,8 +794,8 @@ BSP_uart_termios_isr_com2() } return; case TRANSMITTER_HODING_REGISTER_EMPTY : - /* - * TX holding empty: we have to disable these interrupts + /* + * TX holding empty: we have to disable these interrupts * if there is nothing more to send. */ @@ -835,13 +835,13 @@ BSP_uart_termios_isr_com2() } } } - - -/* ================= GDB support ===================*/ + + +/* ================= GDB support ===================*/ static int sav[4] __attribute__ ((unused)); /* - * Interrupt service routine for COM1 - all, + * Interrupt service routine for COM1 - all, * it does it check whether ^C is received * if yes it will flip TF bit before returning * Note: it should be installed as raw interrupt @@ -858,7 +858,7 @@ asm (" movl %edx, sav + 8"); /* Save edx */ asm (" movl $0, %ebx"); /* Clear flag */ -/* +/* * We know that only receive related interrupts * are available, eat chars */ @@ -873,7 +873,7 @@ asm (" inb %dx, %al"); /* Get input character */ asm (" cmpb $3, %al"); asm (" jne uart_dbgisr_com1_1"); -/* ^C received, set flag */ +/* ^C received, set flag */ asm (" movl $1, %ebx"); asm (" jmp uart_dbgisr_com1_1"); @@ -920,10 +920,10 @@ asm (" iret"); /* Done */ /* - * Interrupt service routine for COM2 - all, + * Interrupt service routine for COM2 - all, * it does it check whether ^C is received * if yes it will flip TF bit before returning - * Note: it has to be installed as raw interrupt + * Note: it has to be installed as raw interrupt * handler */ asm (".p2align 4"); @@ -936,7 +936,7 @@ asm (" movl %edx, sav + 8"); /* Save edx */ asm (" movl $0, %ebx"); /* Clear flag */ -/* +/* * We know that only receive related interrupts * are available, eat chars */ @@ -951,7 +951,7 @@ asm (" inb %dx, %al"); /* Get input character */ asm (" cmpb $3, %al"); asm (" jne uart_dbgisr_com2_1"); -/* ^C received, set flag */ +/* ^C received, set flag */ asm (" movl $1, %ebx"); asm (" jmp uart_dbgisr_com2_1"); |