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Patch from John M. Mills <jmills@tga.com> to correct the baseline

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serial drivers used in the 'gensh2' BSP for the Hitachi sh7045 CPU.
This commit is contained in:
Joel Sherrill
2000-01-07 18:52:14 +00:00
parent 09e0df6766
commit 35d9acb36e
1 changed files with 81 additions and 11 deletions
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92
c/src/lib/libcpu/sh/sh7045/sci/sci.c
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@@ -50,32 +50,104 @@
#include <rtems/score/ispsh7045.h> #include <rtems/score/ispsh7045.h>
#include <rtems/score/iosh7045.h> #include <rtems/score/iosh7045.h>
#include <sh/sh7_sci.h> #include <sh/sh7_sci.h>
#include <sh/io_types.h> #include <sh/sh7_pfc.h>
/* #include <sh/io_types.h> */
#include <sh/sci.h> #include <sh/sci.h>
#ifndef STANDALONE_EVB
#define STANDALONE_EVB 0
#endif
/*
* 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.
*/
#define SH_SCI_BASE_0 SCI_SMR0
#define SH_SCI_BASE_1 SCI_SMR1
#define SH_SCI_DEF_COMM_0 B9600 | CS8
#define SH_SCI_DEF_COMM_1 B38400 | CS8
/* #define SH_SCI_DEF_COMM_1 B9600 | CS8 */
struct scidev_t { struct scidev_t {
char * name ; char * name ;
unsigned32 addr ;
rtems_device_minor_number minor ; rtems_device_minor_number minor ;
unsigned short opened ; unsigned short opened ;
tcflag_t cflags ; tcflag_t cflags ;
} sci_device[2] = } sci_device[SCI_MINOR_DEVICES] =
{ {
{ "/dev/sci0", 0, 0, B9600 | CS8 }, { "/dev/sci0", SH_SCI_BASE_0, 0, 0, SH_SCI_DEF_COMM_0 },
{ "/dev/sci1", 1, 0, B9600 | CS8 } { "/dev/sci1", SH_SCI_BASE_1, 1, 0, SH_SCI_DEF_COMM_1 }
} ; } ;
/* local data structures maintain hardware configuration */ /* local data structures maintain hardware configuration */
#if UNUSED
static sci_setup_t sio_param[2];
#endif
/* imported from scitab.rel */
extern int _sci_get_brparms( extern int _sci_get_brparms(
tcflag_t cflag, tcflag_t cflag,
unsigned char *smr, unsigned char *smr,
unsigned char *brr ); unsigned char *brr );
#if UNUSED /* Translate termios' tcflag_t into sci settings */
static sci_setup_t sio_param[2]; static int _sci_set_cflags(
#endif struct scidev_t *sci_dev,
tcflag_t c_cflag )
{
unsigned8 smr ;
unsigned8 brr ;
/* local functions operate SCI ports 0 and 1 */ if ( c_cflag & CBAUD )
/* called from polling routines or ISRs */ {
if ( _sci_get_brparms( c_cflag, &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;
write8( smr, sci_dev->addr + SCI_SMR );
write8( brr, sci_dev->addr + SCI_BRR );
return 0 ;
}
/*
* local functions operate SCI ports 0 and 1
* called from polling routines or ISRs
*/
rtems_boolean wrtSCI0(unsigned char ch) rtems_boolean wrtSCI0(unsigned char ch)
{ {
unsigned8 temp; unsigned8 temp;
@@ -242,8 +314,6 @@ rtems_device_driver sh_sci_open(
{ {
unsigned8 temp8; unsigned8 temp8;
unsigned16 temp16; unsigned16 temp16;
unsigned char smr ;
unsigned char brr ;
unsigned a ; unsigned a ;