From 21cc9a491a493a8d362f10b2527a88dc3a7f93f0 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Mon, 15 Oct 2001 18:40:01 +0000 Subject: 2001-10-15 Ralf Corsepius * include/sh4uart.h: move to include/sh/sh4uart.h. * include/ispsh7750.h: move to include/rtems/score/ispsh7750.h. * include/iosh7750.h: move include/rtems/score/iosh7750.h. * include/sh7750_regs.h: move to include/rtems/score/sh7750_regs.h. * include/rtems/score/ipl.h: move to include/rtems/score/ipl.h. * include/rtems/score/sh4_regs.h: Reintroduce from Alexandra Kossovsky's original sources. * include/Makefile.am: reflect changes above, remove EXTRA_DIST, require automake 1.5. * sci/Makefile.am: Disable compilation of console.c. * sci/sh4uart.c: include , add SH7750_SCSMR_CHK_S, remove SH4_CPU_HZ_Frequency; * score/isph7750.c: Remove #if !defined(sh7750), include sh4_regs.h. --- c/src/lib/libcpu/sh/sh7750/include/sh/sh4uart.h | 179 ++++++++++++++++++++++++ 1 file changed, 179 insertions(+) create mode 100644 c/src/lib/libcpu/sh/sh7750/include/sh/sh4uart.h (limited to 'c/src/lib/libcpu/sh/sh7750/include/sh/sh4uart.h') diff --git a/c/src/lib/libcpu/sh/sh7750/include/sh/sh4uart.h b/c/src/lib/libcpu/sh/sh7750/include/sh/sh4uart.h new file mode 100644 index 0000000000..ff5263e841 --- /dev/null +++ b/c/src/lib/libcpu/sh/sh7750/include/sh/sh4uart.h @@ -0,0 +1,179 @@ +/* + * Generic UART Serial driver for SH-4 processors definitions + * + * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russian Fed. + * Author: Alexandra Kossovsky + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * + * http://www.OARcorp.com/rtems/license.html. + * + * @(#) $Id$ + * + */ + +#ifndef __SH4UART_H__ +#define __SH4UART_H__ + +#include + + +/* + * Define this to work from gdb stub + */ + +/* FIXME: This is BSP-specific */ +#define SH4_WITH_IPL + +#define SH4_SCI 1 /* Serial Communication Interface - SCI */ +#define SH4_SCIF 2 /* Serial Communication Interface with FIFO - SCIF */ +#define TRANSMIT_TRIGGER_VALUE(ttrg) ((ttrg) == SH7750_SCFCR2_RTRG_1 ? 1 : \ + (ttrg) == SH7750_SCFCR2_RTRG_4 ? 4 : \ + (ttrg) == SH7750_SCFCR2_RTRG_8 ? 8 : 14) + +/* + * Macros to call UART registers + */ +#define SCRDR(n) (*(volatile rtems_unsigned8 *)SH7750_SCRDR(n)) +#define SCRDR1 SCRDR(1) +#define SCRDR2 SCRDR(2) +#define SCTDR(n) (*(volatile rtems_unsigned8 *)SH7750_SCTDR(n)) +#define SCTDR1 SCTDR(1) +#define SCTDR2 SCTDR(2) +#define SCSMR(n) ((n) == 1 ? *(volatile rtems_unsigned8 *)SH7750_SCSMR1 : \ + *(volatile rtems_unsigned16 *)SH7750_SCSMR2) +#define SCSMR1 SCSMR(1) +#define SCSMR2 SCSMR(2) +#define SCSCR(n) ((n) == 1 ? *(volatile rtems_unsigned8 *)SH7750_SCSCR1 : \ + *(volatile rtems_unsigned16 *)SH7750_SCSCR2) +#define SCSCR1 SCSCR(1) +#define SCSCR2 SCSCR(2) +#define SCSSR(n) ((n) == 1 ? *(volatile rtems_unsigned8 *)SH7750_SCSSR1 : \ + *(volatile rtems_unsigned16 *)SH7750_SCSSR2) +#define SCSSR1 SCSSR(1) +#define SCSSR2 SCSSR(2) +#define SCSPTR1 (*(volatile rtems_unsigned8 *)SH7750_SCSPTR1) +#define SCSPTR2 (*(volatile rtems_unsigned16 *)SH7750_SCSPTR2) +#define SCBRR(n) (*(volatile rtems_unsigned8 *)SH7750_SCBRR(n)) +#define SCBRR1 SCBRR(1) +#define SCBRR2 SCBRR(2) +#define SCFCR2 (*(volatile rtems_unsigned16 *)SH7750_SCFCR2) +#define SCFDR2 (*(volatile rtems_unsigned16 *)SH7750_SCFDR2) +#define SCLSR2 (*(volatile rtems_unsigned16 *)SH7750_SCLSR2) + +#define IPRB (*(volatile rtems_unsigned16 *)SH7750_IPRB) +#define IPRC (*(volatile rtems_unsigned16 *)SH7750_IPRC) + +/* + * The following structure is a descriptor of single UART channel. + * It contains the initialization information about channel and + * current operating values + */ +typedef struct sh4uart { + rtems_unsigned8 chn; /* UART channel number */ + rtems_unsigned8 int_driven; /* UART interrupt vector number, or + 0 if polled I/O */ + void *tty; /* termios channel descriptor */ + + volatile const char *tx_buf; /* Transmit buffer from termios */ + volatile rtems_unsigned32 tx_buf_len; /* Transmit buffer length */ + volatile rtems_unsigned32 tx_ptr; /* Index of next char to transmit*/ + + rtems_isr_entry old_handler_transmit; /* Saved interrupt handlers */ + rtems_isr_entry old_handler_receive; + + tcflag_t c_iflag; /* termios input mode flags */ + rtems_boolean parerr_mark_flag; /* Parity error processing state */ +} sh4uart; + +/* + * Functions from sh4uart.c + */ + +/* sh4uart_init -- + * This function verifies the input parameters and perform initialization + * of the Motorola Coldfire on-chip UART descriptor structure. + * + */ +rtems_status_code +sh4uart_init(sh4uart *uart, void *tty, int chn, int int_driven); + +/* sh4uart_reset -- + * This function perform the hardware initialization of Motorola + * Coldfire processor on-chip UART controller using parameters + * filled by the sh4uart_init function. + */ +rtems_status_code +sh4uart_reset(sh4uart *uart); + +/* sh4uart_disable -- + * This function disable the operations on Motorola Coldfire UART + * controller + */ +rtems_status_code +sh4uart_disable(sh4uart *uart); + +/* sh4uart_set_attributes -- + * This function parse the termios attributes structure and perform + * the appropriate settings in hardware. + */ +rtems_status_code +sh4uart_set_attributes(sh4uart *mcf, const struct termios *t); + +/* sh4uart_poll_read -- + * This function tried to read character from MCF UART and perform + * error handling. + */ +int +sh4uart_poll_read(sh4uart *uart); + +#ifdef SH4_WITH_IPL +/* ipl_console_poll_read -- + * This function tried to read character from MCF UART over SH-IPL. + */ +int +ipl_console_poll_read(int minor); + +/* sh4uart_interrupt_write -- + * This function initiate transmitting of the buffer in interrupt mode. + */ +rtems_status_code +sh4uart_interrupt_write(sh4uart *uart, const char *buf, int len); + +/* sh4uart_poll_write -- + * This function transmit buffer byte-by-byte in polling mode. + */ +int +sh4uart_poll_write(sh4uart *uart, const char *buf, int len); + +/* ipl_console_poll_write -- + * This function transmit buffer byte-by-byte in polling mode over SH-IPL. + */ +int +ipl_console_poll_write(int minor, const char *buf, int len); + +/* + * ipl_finish -- + * Says gdb that program finished to get out from it. + */ +extern void ipl_finish(void); +#endif + +/* sh4uart_stop_remote_tx -- + * This function stop data flow from remote device. + */ +rtems_status_code +sh4uart_stop_remote_tx(sh4uart *uart); + +/* sh4uart_start_remote_tx -- + * This function resume data flow from remote device. + */ +rtems_status_code +sh4uart_start_remote_tx(sh4uart *uart); + +/* Descriptor structures for two on-chip UART channels */ +extern sh4uart sh4_uarts[2]; + +#endif + -- cgit v1.2.3