diff options
Diffstat (limited to 'c/src/lib/libcpu/sh/sh7045/sci')
| -rw-r--r-- | c/src/lib/libcpu/sh/sh7045/sci/sci.c | 62 | ||||
| -rw-r--r-- | c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c | 154 |
2 files changed, 108 insertions, 108 deletions
diff --git a/c/src/lib/libcpu/sh/sh7045/sci/sci.c b/c/src/lib/libcpu/sh/sh7045/sci/sci.c index a3cbcc613d..f78f36179d 100644 --- a/c/src/lib/libcpu/sh/sh7045/sci/sci.c +++ b/c/src/lib/libcpu/sh/sh7045/sci/sci.c @@ -1,12 +1,12 @@ /* * /dev/sci[0|1] for Hitachi SH 704X * - * The SH doesn't have a designated console device. Therefore we "alias" - * another device as /dev/console and revector all calls to /dev/console + * The SH doesn't have a designated console device. Therefore we "alias" + * another device as /dev/console and revector all calls to /dev/console * to this device. * - * This approach is similar to installing a sym-link from one device to - * another device. If rtems once will support sym-links for devices files, + * This approach is similar to installing a sym-link from one device to + * another device. If rtems once will support sym-links for devices files, * this implementation could be dropped. * * Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de) @@ -16,7 +16,7 @@ * This program 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. - * + * * * COPYRIGHT (c) 1998. * On-Line Applications Research Corporation (OAR). @@ -61,9 +61,9 @@ /* * NOTE: Some SH variants have 3 sci devices */ - + #define SCI_MINOR_DEVICES 2 - + /* * FIXME: sh7045 register names match Hitachi data book, * but conflict with RTEMS sh7032 usage. @@ -106,13 +106,13 @@ static int _sci_set_cflags( { uint8_t smr ; uint8_t brr ; - + if ( c_cflag & CBAUD ) { if ( _sci_get_brparms( c_cflag, &smr, &brr ) != 0 ) return -1 ; } - + if ( c_cflag & CSIZE ) { if ( c_cflag & CS8 ) @@ -137,10 +137,10 @@ static int _sci_set_cflags( smr |= SCI_ODD_PARITY ; else smr &= ~SCI_ODD_PARITY; - + write8( smr, sci_dev->addr + SCI_SMR ); write8( brr, sci_dev->addr + SCI_BRR ); - + return 0 ; } @@ -255,7 +255,7 @@ char sh_sci_inbyte_polled( rtems_device_minor_number minor ) { char ch; - + if (minor == 0) /* blocks until char.ready */ while (rdSCI0(&ch) != TRUE); /* SCI0 */ else @@ -296,8 +296,8 @@ rtems_device_driver sh_sci_initialize( rtems_device_driver status; rtems_device_minor_number i; rtems_driver_name_t driver; - - + + /* * register all possible devices. * the initialization of the hardware is done by sci_open @@ -341,22 +341,22 @@ rtems_device_driver sh_sci_open( { uint8_t temp8; uint16_t temp16; - + unsigned a ; - + /* check for valid minor number */ if(( minor > ( SCI_MINOR_DEVICES -1 )) || ( minor < 0 )) { return RTEMS_INVALID_NUMBER; } - + /* device already opened */ if ( sci_device[minor].opened > 0 ) { sci_device[minor].opened++ ; return RTEMS_SUCCESSFUL ; } - + /* set PFC registers to enable I/O pins */ if ((minor == 0)) { @@ -364,8 +364,8 @@ rtems_device_driver sh_sci_open( temp16 &= ~(PA2MD1 | PA2MD0); temp16 |= (PA_TXD0 | PA_RXD0); /* enable pins for Tx0, Rx0 */ write16(temp16, PFC_PACRL2); - - } else if (minor == 1) { + + } 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 */ @@ -390,24 +390,24 @@ rtems_device_driver sh_sci_open( while(temp8 & (SCI_RDRF | SCI_ORER | SCI_FER | SCI_PER)){ temp8 = read8(sci_device[minor].addr + SCI_RDR); /* flush input */ temp8 = read8(sci_device[minor].addr + SCI_SSR); /* clear some flags */ - write8(temp8 & ~(SCI_RDRF | SCI_ORER | SCI_FER | SCI_PER), + write8(temp8 & ~(SCI_RDRF | SCI_ORER | SCI_FER | SCI_PER), sci_device[minor].addr + SCI_SSR); temp8 = read8(sci_device[minor].addr + SCI_SSR); /* check if everything is OK */ - } + } /* Clear RDRF flag */ write8(0x00, sci_device[minor].addr + SCI_TDR); /* force output */ /* Clear the TDRE bit */ temp8 = read8(sci_device[minor].addr + SCI_SSR) & ~SCI_TDRE; write8(temp8, sci_device[minor].addr + SCI_SSR); - + /* add interrupt setup if required */ - + sci_device[minor].opened++ ; return RTEMS_SUCCESSFUL ; } - + /* * Close entry point */ @@ -423,7 +423,7 @@ rtems_device_driver sh_sci_close( sci_device[minor].opened-- ; else return RTEMS_INVALID_NUMBER ; - + return RTEMS_SUCCESSFUL ; } @@ -441,7 +441,7 @@ rtems_device_driver sh_sci_read( char *buffer; int maximum; int count = 0; - + rw_args = (rtems_libio_rw_args_t *) arg; buffer = rw_args->buffer; @@ -460,7 +460,7 @@ rtems_device_driver sh_sci_read( } /* - * write bytes to the serial port. Stdout and stderr are the same. + * write bytes to the serial port. Stdout and stderr are the same. */ rtems_device_driver sh_sci_write( @@ -527,7 +527,7 @@ static int _sh_sci_poll_read(int minor) { int value = -1; char ch; - + if( minor == 0 ){ if( rdSCI0( &ch ) ) value = (int) ch; @@ -539,12 +539,12 @@ static int _sh_sci_poll_read(int minor) } /* - * Termios polled write + * Termios polled write */ static int _sh_sci_poll_write(int minor, const char *buf, int len) { int count; - + for(count = 0; count < len; count++) outbyte( minor, buf[count] ); return count; diff --git a/c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c b/c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c index 8f00ad9c38..ef9e510f66 100644 --- a/c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c +++ b/c/src/lib/libcpu/sh/sh7045/sci/sci_termios.c @@ -34,7 +34,7 @@ #include <sh/sci_termios.h> -/* +/* * Some handy macros */ #define SH_SCI_REG_DATA(_data, _minor, _register) \ @@ -51,22 +51,22 @@ /* * NOTE: Some SH variants have 3 sci devices */ - + #define SCI_MINOR_DEVICES 2 -/* - * Automatically generated function imported from scitab.rel +/* + * Automatically generated function imported from scitab.rel */ extern int _sci_get_brparms( tcflag_t cflag, unsigned char *smr, unsigned char *brr ); -/* +/* * Translate termios flags into SCI settings */ -int sh_sci_set_attributes( +int sh_sci_set_attributes( int minor, const struct termios *t ) @@ -74,7 +74,7 @@ int sh_sci_set_attributes( uint8_t smr ; uint8_t brr ; int a; - + tcflag_t c_cflag = t->c_cflag; if ( c_cflag & CBAUD ) @@ -82,7 +82,7 @@ int sh_sci_set_attributes( if ( _sci_get_brparms( c_cflag, &smr, &brr ) != 0 ) return -1 ; } - + if ( c_cflag & CSIZE ) { if ( c_cflag & CS8 ) @@ -109,34 +109,34 @@ int sh_sci_set_attributes( 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. + * The same routine for all interrupt sources of the same type. */ 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) - { + { uint8_t temp8; - + /* * FIXME: error handling should be added */ @@ -152,7 +152,7 @@ rtems_isr sh_sci_rx_isr(rtems_vector_number vector) } } -/* +/* * Transmit-data-empty ISR * * The same routine for all interrupt sources of the same type. @@ -165,11 +165,11 @@ rtems_isr sh_sci_tx_isr(rtems_vector_number vector) { 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); @@ -177,7 +177,7 @@ rtems_isr sh_sci_tx_isr(rtems_vector_number vector) 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); @@ -188,38 +188,38 @@ rtems_isr sh_sci_tx_isr(rtems_vector_number vector) } -/* +/* * Initialization of serial port */ void sh_sci_init(int minor) { uint16_t temp16; - - /* - * set PFC registers to enable I/O pins + + /* + * set PFC registers to enable I/O pins */ - if ((minor == 0)) + 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) - { + + } + 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 @@ -231,22 +231,22 @@ void sh_sci_initialize_interrupts(int minor) rtems_status_code status; sh_sci_init(minor); - /* + /* * Disable IRQ of SCIx */ status = sh_set_irq_priority( - Console_Port_Tbl[minor].ulIntVector, 0); + 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, + sh_sci_rx_isr, Console_Port_Tbl[minor].ulIntVector, &old_isr); @@ -260,14 +260,14 @@ void sh_sci_initialize_interrupts(int minor) if(status != RTEMS_SUCCESSFUL) rtems_fatal_error_occurred(status); - - /* - * Enable IRQ of SCIx + + /* + * 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].ulIntVector, Console_Port_Tbl[minor].ulCtrlPort2); if(status != RTEMS_SUCCESSFUL) @@ -287,21 +287,21 @@ int sh_sci_first_open( { uint8_t temp8; unsigned int a ; - - /* - * check for valid minor number + + /* + * check for valid minor number */ if(( minor > ( SCI_MINOR_DEVICES -1 )) || ( minor < 0 )) { return RTEMS_INVALID_NUMBER; } - /* - * set up SCI registers + /* + * 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); @@ -312,8 +312,8 @@ int sh_sci_first_open( write8((SCI_RE | SCI_TE), /* enable async. Tx and Rx */ Console_Port_Tbl[minor].ulCtrlPort1 + SCI_SCR); - /* - * clear error flags + /* + * clear error flags */ temp8 = read8(Console_Port_Tbl[minor].ulCtrlPort1 + SCI_SSR); while(temp8 & (SCI_RDRF | SCI_ORER | SCI_FER | SCI_PER)) @@ -323,25 +323,25 @@ int sh_sci_first_open( /* 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 + + /* + * Interrupt setup */ if(Console_Port_Tbl[minor].pDeviceFns->deviceOutputUsesInterrupts) { SH_SCI_REG_FLAG(SCI_RIE, minor, SCI_SCR); } - + return RTEMS_SUCCESSFUL ; } @@ -365,12 +365,12 @@ int sh_sci_last_close( return RTEMS_SUCCESSFUL ; } -/* +/* * Interrupt aware write routine */ int sh_sci_write_support_int( - int minor, - const char *buf, + int minor, + const char *buf, int len ) { @@ -381,15 +381,15 @@ int sh_sci_write_support_int( */ 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 */ int sh_sci_write_support_polled( @@ -399,19 +399,19 @@ int sh_sci_write_support_polled( ) { 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( @@ -419,45 +419,45 @@ void sh_sci_write_polled( 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 +/* + * Non-blocking read */ int sh_sci_inbyte_nonblocking_polled(int minor) { uint8_t 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) & + 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; |