diff options
Diffstat (limited to 'c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c')
| -rw-r--r-- | c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c | 449 |
1 files changed, 0 insertions, 449 deletions
diff --git a/c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c b/c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c deleted file mode 100644 index 5d588065af..0000000000 --- a/c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c +++ /dev/null @@ -1,449 +0,0 @@ -/* - * Termios console serial driver. - */ - -/* - * Based on SCI driver by Ralf Corsepius and John M. Mills - * - * Author: Radzislaw Galler <rgaller@et.put.poznan.pl> - * - * COPYRIGHT (c) 1989-2001. - * 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 <bsp.h> -#include <stdlib.h> - -#include <libchip/serial.h> -#include <libchip/sersupp.h> - -#include <rtems/libio.h> -#include <rtems/iosupp.h> - -#include <rtems/score/sh_io.h> -#include <rtems/score/ispsh7045.h> -#include <rtems/score/iosh7045.h> - -#include <sh/sh7_sci.h> -#include <sh/sh7_pfc.h> -#include <sh/sci_termios.h> - - -/* - * Some handy macros - */ -#define SH_SCI_REG_DATA(_data, _minor, _register) \ - (write8(_data, Console_Port_Tbl[_minor]->ulCtrlPort1 + (_register))) - -#define SH_SCI_REG_FLAG(_flag, _minor, _register) \ - (write8(read8(Console_Port_Tbl[_minor]->ulCtrlPort1 + (_register)) | (_flag), \ - Console_Port_Tbl[_minor]->ulCtrlPort1 + (_register))) - -#define SH_SCI_REG_MASK(_flag, _minor, _register) \ - (write8(read8(Console_Port_Tbl[_minor]->ulCtrlPort1 + (_register)) & ~(_flag),\ - Console_Port_Tbl[_minor]->ulCtrlPort1 + (_register))) - -/* - * NOTE: Some SH variants have 3 sci devices - */ - -#define SCI_MINOR_DEVICES 2 - - -/* - * Automatically generated function imported from scitab.rel - */ -extern int _sci_get_brparms( - speed_t spd, - unsigned char *smr, - unsigned char *brr -); - -/* - * Translate termios flags into SCI settings - */ -int sh_sci_set_attributes( - int minor, - const struct termios *t -) -{ - uint8_t smr; - uint8_t brr; - int a; - - tcflag_t c_cflag = t->c_cflag; - speed_t spd = t->c_ospeed; - - if ( spd ) { - if ( _sci_get_brparms( spd, &smr, &brr ) != 0 ) - return -1 ; - } - - if ( c_cflag & CSIZE ) { - if ( c_cflag & CS8 ) - smr &= ~SCI_SEVEN_BIT_DATA; - else if ( c_cflag & CS7 ) - smr |= SCI_SEVEN_BIT_DATA; - else - return -1 ; - } - - if ( c_cflag & CSTOPB ) - smr |= SCI_STOP_BITS_2; - else - smr &= ~SCI_STOP_BITS_2; - - if ( c_cflag & PARENB ) - smr |= SCI_PARITY_ON ; - else - smr &= ~SCI_PARITY_ON ; - - if ( c_cflag & PARODD ) - smr |= SCI_ODD_PARITY ; - else - smr &= ~SCI_ODD_PARITY; - - SH_SCI_REG_MASK((SCI_RE | SCI_TE), minor, SCI_SCR); - - SH_SCI_REG_DATA(smr, minor, SCI_SMR); - SH_SCI_REG_DATA(brr, minor, SCI_BRR); - - for (a=0; a < 10000L; a++) { /* Delay one bit */ - __asm__ volatile ("nop"); - } - - SH_SCI_REG_FLAG((SCI_RE | SCI_TE), minor, SCI_SCR); - - return 0; -} - -/* - * Receive-data-full ISR - * - * The same routine for all interrupt sources of the same type. - */ -static rtems_isr sh_sci_rx_isr(rtems_vector_number vector) -{ - int minor; - - for (minor = 0; minor < Console_Port_Count; minor++) { - if (Console_Port_Tbl[minor]->ulIntVector == vector) { - char temp8; - - /* - * FIXME: error handling should be added - */ - temp8 = read8(Console_Port_Tbl[minor]->ulCtrlPort1 + SCI_RDR); - - rtems_termios_enqueue_raw_characters( - Console_Port_Data[minor].termios_data, &temp8, 1); - - SH_SCI_REG_MASK(SCI_RDRF, minor, SCI_SSR); - break; - } - } -} - -/* - * Transmit-data-empty ISR - * - * The same routine for all interrupt sources of the same type. - */ -static rtems_isr sh_sci_tx_isr(rtems_vector_number vector) -{ - int minor; - - for (minor = 0; minor < Console_Port_Count; minor++) { - if (Console_Port_Tbl[minor]->ulDataPort == vector) { - /* - * FIXME: Error handling should be added - */ - - /* - * Mask end-of-transmission interrupt - */ - SH_SCI_REG_MASK(SCI_TIE, minor, SCI_SCR); - - if (rtems_termios_dequeue_characters( - Console_Port_Data[minor].termios_data, 1)) { - /* - * More characters to be received - interrupt must be enabled - */ - SH_SCI_REG_FLAG(SCI_TIE, minor, SCI_SCR); - } - break; - } - } -} - - -/* - * Initialization of serial port - */ -void sh_sci_init(int minor) -{ - uint16_t temp16; - - /* - * set PFC registers to enable I/O pins - */ - if ((minor == 0)) { - temp16 = read16(PFC_PACRL2); /* disable SCK0, DMA, IRQ */ - temp16 &= ~(PA2MD1 | PA2MD0); - temp16 |= (PA_TXD0 | PA_RXD0); /* enable pins for Tx0, Rx0 */ - write16(temp16, PFC_PACRL2); - - } else if (minor == 1) { - temp16 = read16(PFC_PACRL2); /* disable SCK1, DMA, IRQ */ - temp16 &= ~(PA5MD1 | PA5MD0); - temp16 |= (PA_TXD1 | PA_RXD1); /* enable pins for Tx1, Rx1 */ - write16(temp16, PFC_PACRL2); - } - - /* - * Non-default hardware setup occurs in sh_sci_first_open - */ -} - -/* - * Initialization of interrupts - * - * Interrupts can be started only after opening a device, so interrupt - * flags are set up in sh_sci_first_open function - */ -void sh_sci_initialize_interrupts(int minor) -{ - rtems_isr_entry old_isr; - rtems_status_code status; - - sh_sci_init(minor); - /* - * Disable IRQ of SCIx - */ - status = sh_set_irq_priority( Console_Port_Tbl[minor]->ulIntVector, 0); - - if (status != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred(status); - - SH_SCI_REG_MASK(SCI_RIE, minor, SCI_SCR); - - /* - * Catch apropriate vectors - */ - status = rtems_interrupt_catch( - sh_sci_rx_isr, - Console_Port_Tbl[minor]->ulIntVector, - &old_isr); - - if (status != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred(status); - - status = rtems_interrupt_catch( - sh_sci_tx_isr, - Console_Port_Tbl[minor]->ulDataPort, - &old_isr); - - if (status != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred(status); - - /* - * Enable IRQ of SCIx - */ - SH_SCI_REG_FLAG(SCI_RIE, minor, SCI_SCR); - - status = sh_set_irq_priority( - Console_Port_Tbl[minor]->ulIntVector, - Console_Port_Tbl[minor]->ulCtrlPort2); - - if (status != RTEMS_SUCCESSFUL) - rtems_fatal_error_occurred(status); -} - - -/* - * Open entry point - * Sets up port and pins for selected sci. - */ - -int sh_sci_first_open( - int major, - int minor, - void *arg -) -{ - char temp8; - unsigned int a ; - - /* - * check for valid minor number - */ - if (( minor > ( SCI_MINOR_DEVICES -1 )) || ( minor < 0 )) { - return RTEMS_INVALID_NUMBER; - } - - /* - * set up SCI registers - */ - /* Clear SCR - disable Tx and Rx */ - SH_SCI_REG_DATA(0x00, minor, SCI_SCR); - - /* set SMR and BRR - baudrate and format */ - sh_sci_set_attributes(minor, Console_Port_Tbl[minor]->pDeviceParams); - - for (a=0; a < 10000L; a++) { /* Delay */ - __asm__ volatile ("nop"); - } - - write8((SCI_RE | SCI_TE), /* enable async. Tx and Rx */ - Console_Port_Tbl[minor]->ulCtrlPort1 + SCI_SCR); - - /* - * clear error flags - */ - temp8 = read8(Console_Port_Tbl[minor]->ulCtrlPort1 + SCI_SSR); - while(temp8 & (SCI_RDRF | SCI_ORER | SCI_FER | SCI_PER)) { - /* flush input */ - temp8 = read8(Console_Port_Tbl[minor]->ulCtrlPort1 + SCI_RDR); - - /* clear some flags */ - SH_SCI_REG_FLAG((SCI_RDRF|SCI_ORER|SCI_FER|SCI_PER), minor, SCI_SSR); - - /* check if everything is OK */ - temp8 = read8(Console_Port_Tbl[minor]->ulCtrlPort1 + SCI_SSR); - } - - /* Clear RDRF flag */ - SH_SCI_REG_DATA(0x00, minor, SCI_TDR); /* force output */ - - /* Clear the TDRE bit */ - SH_SCI_REG_FLAG(SCI_TDRE, minor, SCI_SSR); - - /* - * Interrupt setup - */ - if (Console_Port_Tbl[minor]->pDeviceFns->deviceOutputUsesInterrupts) { - SH_SCI_REG_FLAG(SCI_RIE, minor, SCI_SCR); - } - - return RTEMS_SUCCESSFUL ; -} - -/* - * Close entry point - */ - -int sh_sci_last_close( - int major, - int minor, - void *arg -) -{ - /* FIXME: Incomplete */ - - /* Shutdown interrupts if necessary */ - if (Console_Port_Tbl[minor]->pDeviceFns->deviceOutputUsesInterrupts) - { - SH_SCI_REG_MASK((SCI_TIE | SCI_RIE), minor, SCI_SCR); - } - return RTEMS_SUCCESSFUL ; -} - -/* - * Interrupt aware write routine - */ -ssize_t sh_sci_write_support_int( - int minor, - const char *buf, - size_t len -) -{ - if (!len) - return 0; - /* - * Put data into TDR and clear transmission-end-flag - */ - SH_SCI_REG_DATA(*buf, minor, SCI_TDR); - SH_SCI_REG_MASK(SCI_TDRE, minor, SCI_SSR); - /* - * Enable interrupt - */ - SH_SCI_REG_FLAG(SCI_TIE, minor, SCI_SCR); - - return 1; -} - -/* - * Polled write method - */ -ssize_t sh_sci_write_support_polled( - int minor, - const char *buf, - size_t len -) -{ - int count = 0; - - while(count < len) { - sh_sci_write_polled(minor, buf[count]); - count++; - } - /* - * Return number of bytes written - */ - return count; -} - -/* - * Polled write of one character at a time - */ -void sh_sci_write_polled( - int minor, - char c -) -{ - /* - * Wait for end of previous character - */ - while(!(read8(Console_Port_Tbl[minor]->ulCtrlPort1 + SCI_SSR) & SCI_TDRE)); - /* - * Send the character - */ - SH_SCI_REG_DATA(c, minor, SCI_TDR); - - /* - * Clear TDRE flag - */ - SH_SCI_REG_MASK(SCI_TDRE, minor, SCI_SSR); -} - -/* - * Non-blocking read - */ -int sh_sci_inbyte_nonblocking_polled(int minor) -{ - char inbyte; - - /* - * Check if input buffer is full - */ - if (read8(Console_Port_Tbl[minor]->ulCtrlPort1 + SCI_SSR) & SCI_RDRF) { - inbyte = read8(Console_Port_Tbl[minor]->ulCtrlPort1 + SCI_RDR); - SH_SCI_REG_MASK(SCI_RDRF, minor, SCI_SSR); - - /* - * Check for errors - */ - if (read8(Console_Port_Tbl[minor]->ulCtrlPort1 + SCI_SSR) & - (SCI_ORER | SCI_FER | SCI_PER)) { - SH_SCI_REG_MASK((SCI_ORER | SCI_FER | SCI_PER), minor, SCI_SSR); - return -1; - } - return (int)inbyte; - } - return -1; -} |