From d7d66d7d4523b904c8ccc6aea3709dc0d5aa5bdc Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Thu, 19 Apr 2018 06:28:01 +0200 Subject: bsps: Move console drivers to bsps This patch is a part of the BSP source reorganization. Update #3285. --- c/src/lib/libbsp/m68k/uC5282/console/console.c | 774 ------------------------- 1 file changed, 774 deletions(-) delete mode 100644 c/src/lib/libbsp/m68k/uC5282/console/console.c (limited to 'c/src/lib/libbsp/m68k/uC5282/console/console.c') diff --git a/c/src/lib/libbsp/m68k/uC5282/console/console.c b/c/src/lib/libbsp/m68k/uC5282/console/console.c deleted file mode 100644 index 276d0c6f18..0000000000 --- a/c/src/lib/libbsp/m68k/uC5282/console/console.c +++ /dev/null @@ -1,774 +0,0 @@ -/* - * Multi UART console serial I/O. - * - * TO DO: Add DMA input/output - * - * Author: W. Eric Norum - * - * COPYRIGHT (c) 2005. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - * - */ - -#include -#include -#include -#include - -#include -#include -#include -#include - -#include - -#define UART_INTC0_IRQ_VECTOR(x) (64+13+(x)) - -#define MCF5282_UART_USR_ERROR ( MCF5282_UART_USR_RB | \ - MCF5282_UART_USR_FE | \ - MCF5282_UART_USR_PE | \ - MCF5282_UART_USR_OE ) - -static ssize_t IntUartPollWrite(int minor, const char *buf, size_t len); -static ssize_t IntUartInterruptWrite (int minor, const char *buf, size_t len); - -static void -_BSP_null_char( char c ) -{ - int level; - - rtems_interrupt_disable(level); - while ( (MCF5282_UART_USR(CONSOLE_PORT) & MCF5282_UART_USR_TXRDY) == 0 ) - continue; - MCF5282_UART_UTB(CONSOLE_PORT) = c; - while ( (MCF5282_UART_USR(CONSOLE_PORT) & MCF5282_UART_USR_TXRDY) == 0 ) - continue; - rtems_interrupt_enable(level); -} - -BSP_polling_getchar_function_type BSP_poll_char = NULL; -BSP_output_char_function_type BSP_output_char = _BSP_null_char; - -/* - * The MCF5282 has three UARTs. Enable all them here. I/O pin selection - * is assumed to have been done elsewher. - */ -#define MAX_UART_INFO 3 -#define RX_BUFFER_SIZE 512 - -struct IntUartInfoStruct -{ - int iomode; - volatile int uimr; - int baud; - int databits; - int parity; - int stopbits; - int hwflow; - int rx_in; - int rx_out; - char rx_buffer[RX_BUFFER_SIZE]; - void *ttyp; -}; - -struct IntUartInfoStruct IntUartInfo[MAX_UART_INFO]; - -/*************************************************************************** - Function : IntUartSet - - Description : This updates the hardware UART settings. - ***************************************************************************/ -static void -IntUartSet(int minor, int baud, int databits, int parity, int stopbits, int hwflow) -{ - int divisor; - uint32_t clock_speed; - uint8_t umr1 = 0; - uint8_t umr2 = 0; - struct IntUartInfoStruct *info = &IntUartInfo[minor]; - int level; - - rtems_interrupt_disable(level); - - - /* disable interrupts, clear RTS line, and disable the UARTS */ - MCF5282_UART_UIMR(minor) = 0; - MCF5282_UART_UOP0(minor) = 1; - MCF5282_UART_UCR(minor) = (MCF5282_UART_UCR_TX_DISABLED | MCF5282_UART_UCR_RX_DISABLED); - - /* save the current values */ - info->uimr = 0; - info->baud = baud; - info->databits = databits; - info->parity = parity; - info->stopbits = stopbits; - info->hwflow = hwflow; - - clock_speed = bsp_get_CPU_clock_speed(); - /* determine the baud divisor value */ - divisor = (clock_speed / ( 32 * baud )); - if ( divisor < 2 ) { - divisor = 2; - } - - /* check to see if doing hardware flow control */ - if ( hwflow ) - { - /* set hardware flow options */ - umr1 |= MCF5282_UART_UMR1_RXRTS; - umr2 |= MCF5282_UART_UMR2_TXCTS; - } - - /* determine the new umr values */ - umr1 |= (parity | databits); - umr2 |= (stopbits); - - /* reset the uart */ - MCF5282_UART_UCR(minor) = MCF5282_UART_UCR_RESET_ERROR; - MCF5282_UART_UCR(minor) = MCF5282_UART_UCR_RESET_RX; - MCF5282_UART_UCR(minor) = MCF5282_UART_UCR_RESET_TX; - - /* reset the uart mode register and update values */ - MCF5282_UART_UCR(minor) = MCF5282_UART_UCR_RESET_MR; - MCF5282_UART_UMR(minor) = umr1; - MCF5282_UART_UMR(minor) = umr2; - - /* set the baud rate values */ - MCF5282_UART_UCSR(minor) = (MCF5282_UART_UCSR_RCS_SYS_CLK | MCF5282_UART_UCSR_TCS_SYS_CLK); - MCF5282_UART_UBG1(minor) = (divisor & 0xff00) >> 8; - MCF5282_UART_UBG2(minor) = (divisor & 0x00ff); - - /* enable the uart */ - MCF5282_UART_UCR(minor) = (MCF5282_UART_UCR_TX_ENABLED | MCF5282_UART_UCR_RX_ENABLED); - - /* check to see if interrupts need to be enabled */ - if ( info->iomode != TERMIOS_POLLED ) - { - /* enable rx interrupts */ - info->uimr |= MCF5282_UART_UIMR_FFULL; - MCF5282_UART_UIMR(minor) = info->uimr; - } - - /* check to see if doing hardware flow control */ - if ( hwflow ) - { - /* assert the RTS line */ - MCF5282_UART_UOP1(minor) = 1; - } - - rtems_interrupt_enable(level); - -} - - -/*************************************************************************** - Function : IntUartSetAttributes - - Description : This provides the hardware-dependent portion of tcsetattr(). - value and sets it. At the moment this just sets the baud rate. - - Note: The highest baudrate is 115200 as this stays within - an error of +/- 5% at 25MHz processor clock - ***************************************************************************/ -static int -IntUartSetAttributes(int minor, const struct termios *t) -{ - /* set default index values */ - int baud = (int)9600; - int databits = (int)MCF5282_UART_UMR1_BC_8; - int parity = (int)MCF5282_UART_UMR1_PM_NONE; - int stopbits = (int)MCF5282_UART_UMR2_STOP_BITS_1; - int hwflow = (int)0; - struct IntUartInfoStruct *info = &IntUartInfo[minor]; - - /* check to see if input is valid */ - if ( t != (const struct termios *)0 ) - { - /* determine baud rate index */ - baud = rtems_termios_baud_to_number(t->c_ospeed); - - /* determine data bits */ - switch ( t->c_cflag & CSIZE ) - { - case CS5: - databits = (int)MCF5282_UART_UMR1_BC_5; - break; - case CS6: - databits = (int)MCF5282_UART_UMR1_BC_6; - break; - case CS7: - databits = (int)MCF5282_UART_UMR1_BC_7; - break; - case CS8: - databits = (int)MCF5282_UART_UMR1_BC_8; - break; - } - - /* determine if parity is enabled */ - if ( t->c_cflag & PARENB ) - { - if ( t->c_cflag & PARODD ) - { - /* odd parity */ - parity = (int)MCF5282_UART_UMR1_PM_ODD; - } - else - { - /* even parity */ - parity = (int)MCF5282_UART_UMR1_PM_EVEN; - } - } - - /* determine stop bits */ - if ( t->c_cflag & CSTOPB ) - { - /* two stop bits */ - stopbits = (int)MCF5282_UART_UMR2_STOP_BITS_2; - } - - /* check to see if hardware flow control */ - if ( t->c_cflag & CRTSCTS ) - { - hwflow = 1; - } - } - - /* check to see if values have changed */ - if ( ( baud != info->baud ) || - ( databits != info->databits ) || - ( parity != info->parity ) || - ( stopbits != info->stopbits ) || - ( hwflow != info->hwflow ) ) - { - - /* call function to set values */ - IntUartSet(minor, baud, databits, parity, stopbits, hwflow); - } - - return( RTEMS_SUCCESSFUL ); - -} - -/*************************************************************************** - Function : IntUartInterruptHandler - - Description : This is the interrupt handler for the internal uart. It - determines which channel caused the interrupt before queueing any received - chars and dequeueing chars waiting for transmission. - ***************************************************************************/ -static rtems_isr -IntUartInterruptHandler(rtems_vector_number v) -{ - unsigned int chan = v - UART_INTC0_IRQ_VECTOR(0); - struct IntUartInfoStruct *info = &IntUartInfo[chan]; - - /* check to see if received data */ - if ( MCF5282_UART_UISR(chan) & MCF5282_UART_UISR_RXRDY ) - { - /* read data and put into the receive buffer */ - while ( MCF5282_UART_USR(chan) & MCF5282_UART_USR_RXRDY ) - { - - if ( MCF5282_UART_USR(chan) & MCF5282_UART_USR_ERROR ) - { - /* clear the error */ - MCF5282_UART_UCR(chan) = MCF5282_UART_UCR_RESET_ERROR; - } - /* put data in rx buffer and check for errors */ - info->rx_buffer[info->rx_in] = MCF5282_UART_URB(chan); - - /* update buffer values */ - info->rx_in++; - - if ( info->rx_in >= RX_BUFFER_SIZE ) - { - info->rx_in = 0; - } - } - /* Make sure the port has been opened */ - if ( info->ttyp ) - { - - /* check to see if task driven */ - if ( info->iomode == TERMIOS_TASK_DRIVEN ) - { - /* notify rx task that rx buffer has data */ - rtems_termios_rxirq_occured(info->ttyp); - } - else - { - /* Push up the received data */ - rtems_termios_enqueue_raw_characters(info->ttyp, info->rx_buffer, info->rx_in); - info->rx_in = 0; - } - } - } - - /* check to see if data needs to be transmitted */ - if ( ( info->uimr & MCF5282_UART_UIMR_TXRDY ) && - ( MCF5282_UART_UISR(chan) & MCF5282_UART_UISR_TXRDY ) ) - { - - /* disable tx interrupts */ - info->uimr &= ~MCF5282_UART_UIMR_TXRDY; - MCF5282_UART_UIMR(chan) = info->uimr; - - /* tell upper level that character has been sent */ - if ( info->ttyp ) - rtems_termios_dequeue_characters(info->ttyp, 1); - } -} - - - -/*************************************************************************** - Function : IntUartInitialize - - Description : This initialises the internal uart hardware for all - internal uarts. If the internal uart is to be interrupt driven then the - interrupt vectors are hooked. - ***************************************************************************/ -static void -IntUartInitialize(void) -{ - unsigned int chan; - struct IntUartInfoStruct *info; - rtems_isr_entry old_handler; - int level; - - for ( chan = 0; chan < MAX_UART_INFO; chan++ ) - { - info = &IntUartInfo[chan]; - - info->ttyp = NULL; - info->rx_in = 0; - info->rx_out = 0; - info->baud = -1; - info->databits = -1; - info->parity = -1; - info->stopbits = -1; - info->hwflow = -1; - - MCF5282_UART_UACR(chan) = 0; - MCF5282_UART_UIMR(chan) = 0; - if ( info->iomode != TERMIOS_POLLED ) - { - rtems_interrupt_catch (IntUartInterruptHandler, - UART_INTC0_IRQ_VECTOR(chan), - &old_handler); - } - - /* set uart default values */ - IntUartSetAttributes(chan, NULL); - - /* unmask interrupt */ - rtems_interrupt_disable(level); - switch(chan) { - case 0: - bsp_allocate_interrupt(UART0_IRQ_LEVEL, UART0_IRQ_PRIORITY); - MCF5282_INTC0_ICR13 = MCF5282_INTC_ICR_IL(UART0_IRQ_LEVEL) | - MCF5282_INTC_ICR_IP(UART0_IRQ_PRIORITY); - MCF5282_INTC0_IMRL &= ~(MCF5282_INTC_IMRL_INT13 | - MCF5282_INTC_IMRL_MASKALL); - break; - - case 1: - bsp_allocate_interrupt(UART1_IRQ_LEVEL, UART1_IRQ_PRIORITY); - MCF5282_INTC0_ICR14 = MCF5282_INTC_ICR_IL(UART1_IRQ_LEVEL) | - MCF5282_INTC_ICR_IP(UART1_IRQ_PRIORITY); - MCF5282_INTC0_IMRL &= ~(MCF5282_INTC_IMRL_INT14 | - MCF5282_INTC_IMRL_MASKALL); - break; - - case 2: - bsp_allocate_interrupt(UART2_IRQ_LEVEL, UART2_IRQ_PRIORITY); - MCF5282_INTC0_ICR15 = MCF5282_INTC_ICR_IL(UART2_IRQ_LEVEL) | - MCF5282_INTC_ICR_IP(UART2_IRQ_PRIORITY); - MCF5282_INTC0_IMRL &= ~(MCF5282_INTC_IMRL_INT15 | - MCF5282_INTC_IMRL_MASKALL); - break; - } - rtems_interrupt_enable(level); - - } /* of chan loop */ - - -} /* IntUartInitialise */ - - -/*************************************************************************** - Function : IntUartInterruptWrite - - Description : This writes a single character to the appropriate uart - channel. This is either called during an interrupt or in the user's task - to initiate a transmit sequence. Calling this routine enables Tx - interrupts. - ***************************************************************************/ -static ssize_t -IntUartInterruptWrite (int minor, const char *buf, size_t len) -{ - if (len > 0) { - /* write out character */ - MCF5282_UART_UTB(minor) = *buf; - - /* enable tx interrupt */ - IntUartInfo[minor].uimr |= MCF5282_UART_UIMR_TXRDY; - MCF5282_UART_UIMR(minor) = IntUartInfo[minor].uimr; - } - - return 0; -} - -/*************************************************************************** - Function : IntUartInterruptOpen - - Description : This enables interrupts when the tty is opened. - ***************************************************************************/ -static int -IntUartInterruptOpen(int major, int minor, void *arg) -{ - struct IntUartInfoStruct *info = &IntUartInfo[minor]; - int level; - - /* - * Enable serial I/O pin assignments - */ - rtems_interrupt_disable(level); - switch(minor) { - case 0: - MCF5282_GPIO_PUAPAR |= MCF5282_GPIO_PUAPAR_PUAPA1|MCF5282_GPIO_PUAPAR_PUAPA0; - break; - case 1: - MCF5282_GPIO_PUAPAR |= MCF5282_GPIO_PUAPAR_PUAPA3|MCF5282_GPIO_PUAPAR_PUAPA2; - break; - case 2: - MCF5282_GPIO_PASPAR = - (MCF5282_GPIO_PASPAR - & ~(MCF5282_GPIO_PASPAR_PASPA3(3)|MCF5282_GPIO_PASPAR_PASPA2(3))) - | (MCF5282_GPIO_PASPAR_PASPA3(2)|MCF5282_GPIO_PASPAR_PASPA2(2)); - break; - } - rtems_interrupt_enable(level); - /* enable the uart */ - MCF5282_UART_UCR(minor) = (MCF5282_UART_UCR_TX_ENABLED | MCF5282_UART_UCR_RX_ENABLED); - - /* check to see if interrupts need to be enabled */ - if ( info->iomode != TERMIOS_POLLED ) - { - /* enable rx interrupts */ - info->uimr |= MCF5282_UART_UIMR_FFULL; - MCF5282_UART_UIMR(minor) = info->uimr; - } - - /* check to see if doing hardware flow control */ - if ( info->hwflow ) - { - /* assert the RTS line */ - MCF5282_UART_UOP1(minor) = 1; - } - - return( 0 ); -} - - - -/*************************************************************************** - Function : IntUartInterruptClose - - Description : This disables interrupts when the tty is closed. - ***************************************************************************/ -static int -IntUartInterruptClose(int major, int minor, void *arg) -{ - struct IntUartInfoStruct *info = &IntUartInfo[minor]; - - /* disable the interrupts and the uart */ - MCF5282_UART_UIMR(minor) = 0; - MCF5282_UART_UCR(minor) = (MCF5282_UART_UCR_TX_DISABLED | MCF5282_UART_UCR_RX_DISABLED); - - /* reset values */ - info->ttyp = NULL; - info->uimr = 0; - info->rx_in = 0; - info->rx_out = 0; - - return( 0 ); -} - -/*************************************************************************** - Function : IntUartTaskRead - - Description : This reads all available characters from the internal uart - and places them into the termios buffer. The rx interrupts will be - re-enabled after all data has been read. - ***************************************************************************/ -static int -IntUartTaskRead(int minor) -{ - char buffer[RX_BUFFER_SIZE]; - int count; - int rx_in; - int index = 0; - struct IntUartInfoStruct *info = &IntUartInfo[minor]; - - /* determine number of values to copy out */ - rx_in = info->rx_in; - if ( info->rx_out <= rx_in ) - { - count = rx_in - info->rx_out; - } - else - { - count = (RX_BUFFER_SIZE - info->rx_out) + rx_in; - } - - /* copy data into local buffer from rx buffer */ - while ( ( index < count ) && ( index < RX_BUFFER_SIZE ) ) - { - /* copy data byte */ - buffer[index] = info->rx_buffer[info->rx_out]; - index++; - - /* increment rx buffer values */ - info->rx_out++; - if ( info->rx_out >= RX_BUFFER_SIZE ) - { - info->rx_out = 0; - } - } - - /* check to see if buffer is not empty */ - if ( count > 0 ) - { - /* set characters into termios buffer */ - rtems_termios_enqueue_raw_characters(info->ttyp, buffer, count); - } - - return( EOF ); -} - - - -/*************************************************************************** - Function : IntUartPollRead - - Description : This reads a character from the internal uart. It returns - to the caller without blocking if not character is waiting. - ***************************************************************************/ -static int -IntUartPollRead (int minor) -{ - if ( (MCF5282_UART_USR(minor) & MCF5282_UART_USR_RXRDY) == 0 ) - return(-1); - - return(MCF5282_UART_URB(minor)); -} - - -/*************************************************************************** - Function : IntUartPollWrite - - Description : This writes out each character in the buffer to the - appropriate internal uart channel waiting till each one is sucessfully - transmitted. - ***************************************************************************/ -static ssize_t -IntUartPollWrite (int minor, const char *buf, size_t len) -{ - size_t retval = len; - /* loop over buffer */ - while ( len-- ) - { - /* block until we can transmit */ - while ( (MCF5282_UART_USR(minor) & MCF5282_UART_USR_TXRDY) == 0 ) - continue; - /* transmit data byte */ - MCF5282_UART_UTB(minor) = *buf++; - } - return retval; -} - -/*************************************************************************** - Function : console_initialize - - Description : This initialises termios, all uart hardware before - registering /dev/tty devices for each channel and the system /dev/console. - ***************************************************************************/ -rtems_device_driver console_initialize( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *arg ) -{ - rtems_status_code status; - int chan; - - /* Set up TERMIOS */ - rtems_termios_initialize (); - - /* set io modes for the different channels and initialize device */ - for ( chan = 0; chan < MAX_UART_INFO; chan++ ) - IntUartInfo[chan].iomode = TERMIOS_IRQ_DRIVEN; - IntUartInitialize(); - - /* Register the console port */ - status = rtems_io_register_name ("/dev/console", major, CONSOLE_PORT); - if ( status != RTEMS_SUCCESSFUL ) - { - rtems_fatal_error_occurred (status); - } - - /* Register the other ports */ - if ( CONSOLE_PORT != 0 ) - { - status = rtems_io_register_name ("/dev/tty00", major, 0); - if ( status != RTEMS_SUCCESSFUL ) - { - rtems_fatal_error_occurred (status); - } - } - if ( CONSOLE_PORT != 1 ) - { - status = rtems_io_register_name ("/dev/tty01", major, 1); - if ( status != RTEMS_SUCCESSFUL ) - { - rtems_fatal_error_occurred (status); - } - } - status = rtems_io_register_name ("/dev/tty02", major, 2); - if ( status != RTEMS_SUCCESSFUL ) - { - rtems_fatal_error_occurred (status); - } - - return(RTEMS_SUCCESSFUL); -} - -/*************************************************************************** - Function : console_open - - Description : This actually opens the device depending on the minor - number set during initialisation. The device specific access routines are - passed to termios when the devices is opened depending on whether it is - polled or not. - ***************************************************************************/ -rtems_device_driver console_open( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg) -{ - rtems_status_code status = RTEMS_INVALID_NUMBER; - rtems_libio_open_close_args_t *args = (rtems_libio_open_close_args_t *)arg; - struct IntUartInfoStruct *info; - - static const rtems_termios_callbacks IntUartPollCallbacks = { - NULL, /* firstOpen */ - NULL, /* lastClose */ - IntUartPollRead, /* pollRead */ - IntUartPollWrite, /* write */ - IntUartSetAttributes, /* setAttributes */ - NULL, /* stopRemoteTx */ - NULL, /* startRemoteTx */ - TERMIOS_POLLED /* mode */ - }; - static const rtems_termios_callbacks IntUartIntrCallbacks = { - IntUartInterruptOpen, /* firstOpen */ - IntUartInterruptClose, /* lastClose */ - NULL, /* pollRead */ - IntUartInterruptWrite, /* write */ - IntUartSetAttributes, /* setAttributes */ - NULL, /* stopRemoteTx */ - NULL, /* startRemoteTx */ - TERMIOS_IRQ_DRIVEN /* mode */ - }; - - static const rtems_termios_callbacks IntUartTaskCallbacks = { - IntUartInterruptOpen, /* firstOpen */ - IntUartInterruptClose, /* lastClose */ - IntUartTaskRead, /* pollRead */ - IntUartInterruptWrite, /* write */ - IntUartSetAttributes, /* setAttributes */ - NULL, /* stopRemoteTx */ - NULL, /* startRemoteTx */ - TERMIOS_TASK_DRIVEN /* mode */ - }; - - /* open the port depending on the minor device number */ - if ( ( minor >= 0 ) && ( minor < MAX_UART_INFO ) ) - { - info = &IntUartInfo[minor]; - switch ( info->iomode ) - { - case TERMIOS_POLLED: - status = rtems_termios_open(major, minor, arg, &IntUartPollCallbacks); - break; - case TERMIOS_IRQ_DRIVEN: - status = rtems_termios_open(major, minor, arg, &IntUartIntrCallbacks); - info->ttyp = args->iop->data1; - break; - case TERMIOS_TASK_DRIVEN: - status = rtems_termios_open(major, minor, arg, &IntUartTaskCallbacks); - info->ttyp = args->iop->data1; - break; - } - } - - return( status ); -} - -/*************************************************************************** - Function : console_close - - Description : This closes the device via termios - ***************************************************************************/ -rtems_device_driver console_close( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg) -{ - return(rtems_termios_close (arg)); -} - -/****************** -********************************************************* - Function : console_read - - Description : Read from the device via termios - ***************************************************************************/ -rtems_device_driver console_read( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg) -{ - return(rtems_termios_read (arg)); -} - -/*************************************************************************** - Function : console_write - - Description : Write to the device via termios - ***************************************************************************/ -rtems_device_driver console_write( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg) -{ - return(rtems_termios_write (arg)); -} - -/*************************************************************************** - Function : console_ioctl - - Description : Pass the IOCtl call to termios - ***************************************************************************/ -rtems_device_driver console_control( - rtems_device_major_number major, - rtems_device_minor_number minor, - void * arg) -{ - return( rtems_termios_ioctl (arg) ); -} - -- cgit v1.2.3