[rtems commit] bsps/arm: Remove unused shared/comm/uart.c
Sebastian Huber
sebh at rtems.org
Tue Apr 24 08:25:26 UTC 2018
Module: rtems
Branch: master
Commit: 0180acf23fe292c1acbb98f84d55428175f9bf43
Changeset: http://git.rtems.org/rtems/commit/?id=0180acf23fe292c1acbb98f84d55428175f9bf43
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Tue Apr 24 06:39:19 2018 +0200
bsps/arm: Remove unused shared/comm/uart.c
This patch is a part of the BSP source reorganization.
Update #3285.
---
c/src/lib/libbsp/arm/shared/comm/uart.c | 565 --------------------------------
1 file changed, 565 deletions(-)
diff --git a/c/src/lib/libbsp/arm/shared/comm/uart.c b/c/src/lib/libbsp/arm/shared/comm/uart.c
deleted file mode 100644
index e9528f1..0000000
--- a/c/src/lib/libbsp/arm/shared/comm/uart.c
+++ /dev/null
@@ -1,565 +0,0 @@
-/*
- * This software is Copyright (C) 1998 by T.sqware - all rights limited
- * It is provided in to the public domain "as is", can be freely modified
- * as far as this copyight notice is kept unchanged, but does not imply
- * an endorsement by T.sqware of the product in which it is included.
- *
- * COPYRIGHT (c) 2000 Canon Research France SA.
- * Emmanuel Raguet, mailto:raguet at crf.canon.fr
- *
- * 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 <irq.h>
-#include <registers.h>
-#include <uart.h>
-#include <rtems/libio.h>
-#include <assert.h>
-
-/*
- * Basic 16552 driver
- */
-
-struct uart_data
-{
- int hwFlow;
- int baud;
-};
-
-static struct uart_data uart_data[2];
-
-/*
- * Macros to read/wirte register of uart, if configuration is
- * different just rewrite these macros
- */
-
-static inline unsigned char
-uread(int uart, unsigned int reg)
-{
- register unsigned char val;
-
- val = Regs[reg];
-
- return val;
-}
-
-static inline void
-uwrite(int uart, int reg, unsigned int val)
-{
-
- Regs[reg] = val;
-
-}
-
-#ifdef UARTDEBUG
- static void
-uartError(int uart)
-{
- unsigned char uartStatus, dummy;
-
- uartStatus = uread(uart, LSR);
- dummy = uread(uart, RBR);
-
- if (uartStatus & OE)
- printk("********* Over run Error **********\n");
- if (uartStatus & PE)
- printk("********* Parity Error **********\n");
- if (uartStatus & FE)
- printk("********* Framing Error **********\n");
- if (uartStatus & BI)
- printk("********* Parity Error **********\n");
- if (uartStatus & ERFIFO)
- printk("********* Error receive Fifo **********\n");
-
-}
-#else
-inline void uartError(int uart)
-{
- unsigned char uartStatus;
-
- uartStatus = uread(uart, LSR);
- uartStatus = uread(uart, RBR);
-}
-#endif
-
-/*
- * Uart initialization, it is hardcoded to 8 bit, no parity,
- * one stop bit, FIFO, things to be changed
- * are baud rate and nad hw flow control,
- * and longest rx fifo setting
- */
-void
-BSP_uart_init(int uart, int baud, int hwFlow)
-{
- unsigned char tmp;
-
- /* Sanity check */
- assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2);
-
- switch(baud)
- {
- case 50:
- case 75:
- case 110:
- case 134:
- case 300:
- case 600:
- case 1200:
- case 2400:
- case 9600:
- case 19200:
- case 38400:
- case 57600:
- case 115200:
- break;
- default:
- assert(0);
- return;
- }
-
- /* Enable UART block */
- uwrite(uart, CNT, UART_ENABLE | PAD_ENABLE);
-
- /* Set DLAB bit to 1 */
- uwrite(uart, LCR, DLAB);
-
- /* Set baud rate */
- uwrite(uart, DLL, (BSPBaseBaud/baud) & 0xff);
- uwrite(uart, DLM, ((BSPBaseBaud/baud) >> 8) & 0xff);
-
- /* 8-bit, no parity , 1 stop */
- uwrite(uart, LCR, CHR_8_BITS);
-
- /* Enable FIFO */
- uwrite(uart, FCR, FIFO_EN | XMIT_RESET | RCV_RESET | RECEIVE_FIFO_TRIGGER12);
-
- /* Disable Interrupts */
- uwrite(uart, IER, 0);
-
- /* Read status to clear them */
- tmp = uread(uart, LSR);
- tmp = uread(uart, RBR);
-
- /* Remember state */
- uart_data[uart].hwFlow = hwFlow;
- uart_data[uart].baud = baud;
- return;
-}
-
-/*
- * Set baud
- */
-void
-BSP_uart_set_baud(int uart, int baud)
-{
- unsigned char ier;
-
- /* Sanity check */
- assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2);
-
- /*
- * This function may be called whenever TERMIOS parameters
- * are changed, so we have to make sure that baud change is
- * indeed required
- */
-
- if(baud == uart_data[uart].baud)
- {
- return;
- }
-
- ier = uread(uart, IER);
-
- BSP_uart_init(uart, baud, uart_data[uart].hwFlow);
-
- uwrite(uart, IER, ier);
-
- return;
-}
-
-/*
- * Enable/disable interrupts
- */
-void
-BSP_uart_intr_ctrl(int uart, int cmd)
-{
-
- assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2);
-
- switch(cmd)
- {
- case BSP_UART_INTR_CTRL_DISABLE:
- uwrite(uart, IER, INTERRUPT_DISABLE);
- break;
- case BSP_UART_INTR_CTRL_ENABLE:
- uwrite(uart, IER,
- (RECEIVE_ENABLE |
- TRANSMIT_ENABLE |
- RECEIVER_LINE_ST_ENABLE
- )
- );
- break;
- case BSP_UART_INTR_CTRL_TERMIOS:
- uwrite(uart, IER,
- (RECEIVE_ENABLE |
- RECEIVER_LINE_ST_ENABLE
- )
- );
- break;
- case BSP_UART_INTR_CTRL_GDB:
- uwrite(uart, IER, RECEIVE_ENABLE);
- break;
- default:
- assert(0);
- break;
- }
-
- return;
-}
-
-/*
- * Status function, -1 if error
- * detected, 0 if no received chars available,
- * 1 if received char available, 2 if break
- * is detected, it will eat break and error
- * chars. It ignores overruns - we cannot do
- * anything about - it execpt count statistics
- * and we are not counting it.
- */
-int
-BSP_uart_polled_status(int uart)
-{
- unsigned char val;
-
- assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2);
-
- val = uread(uart, LSR);
-
- if(val & BI)
- {
- /* BREAK found, eat character */
- uread(uart, RBR);
- return BSP_UART_STATUS_BREAK;
- }
-
- if((val & (DR | OE | FE)) == 1)
- {
- /* No error, character present */
- return BSP_UART_STATUS_CHAR;
- }
-
- if((val & (DR | OE | FE)) == 0)
- {
- /* Nothing */
- return BSP_UART_STATUS_NOCHAR;
- }
-
- /*
- * Framing or parity error
- * eat character
- */
- uread(uart, RBR);
-
- return BSP_UART_STATUS_ERROR;
-}
-
-/*
- * Polled mode write function
- */
-void
-BSP_uart_polled_write(int uart, int val)
-{
- unsigned char val1;
-
- /* Sanity check */
- assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2);
-
- for(;;)
- {
- if((val1=uread(uart, LSR)) & THRE)
- {
- break;
- }
- }
-
- uwrite(uart, THR, val & 0xff);
-
- return;
-}
-
-void
-BSP_output_char_via_serial(int val)
-{
- BSP_uart_polled_write(BSPConsolePort, val);
-}
-
-/*
- * Polled mode read function
- */
-int
-BSP_uart_polled_read(int uart)
-{
- unsigned char val;
-
- assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2);
-
- for(;;)
- {
- if(uread(uart, LSR) & DR)
- {
- break;
- }
- }
-
- val = uread(uart, RBR);
-
- return (int)(val & 0xff);
-}
-
-unsigned
-BSP_poll_char_via_serial()
-{
- return BSP_uart_polled_read(BSPConsolePort);
-}
-
-/* ================ Termios support =================*/
-
-static volatile int termios_stopped_com1 = 0;
-static volatile int termios_tx_active_com1 = 0;
-static void* termios_ttyp_com1 = NULL;
-static char termios_tx_hold_com1 = 0;
-static volatile char termios_tx_hold_valid_com1 = 0;
-
-static volatile int termios_stopped_com2 = 0;
-static volatile int termios_tx_active_com2 = 0;
-static void* termios_ttyp_com2 = NULL;
-static char termios_tx_hold_com2 = 0;
-static volatile char termios_tx_hold_valid_com2 = 0;
-
-/*
- * Set channel parameters
- */
-void
-BSP_uart_termios_set(int uart, void *ttyp)
-{
- assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2);
-
- if(uart == BSP_UART_COM1)
- {
- termios_stopped_com1 = 0;
- termios_tx_active_com1 = 0;
- termios_ttyp_com1 = ttyp;
- termios_tx_hold_com1 = 0;
- termios_tx_hold_valid_com1 = 0;
- }
- else
- {
- termios_stopped_com2 = 0;
- termios_tx_active_com2 = 0;
- termios_ttyp_com2 = ttyp;
- termios_tx_hold_com2 = 0;
- termios_tx_hold_valid_com2 = 0;
- }
-
- return;
-}
-
-int
-BSP_uart_termios_write_com1(int minor, const char *buf, int len)
-{
- if(len <= 0)
- {
- return 0;
- }
-
- /* If there TX buffer is busy - something is royally screwed up */
- assert((uread(BSP_UART_COM1, LSR) & THRE) != 0);
-
- if(termios_stopped_com1)
- {
- /* CTS low */
- termios_tx_hold_com1 = *buf;
- termios_tx_hold_valid_com1 = 1;
- return 0;
- }
-
- /* Write character */
- uwrite(BSP_UART_COM1, THR, *buf & 0xff);
-
- /* Enable interrupts if necessary */
- if(!termios_tx_active_com1)
- {
- termios_tx_active_com1 = 1;
- uwrite(BSP_UART_COM1, IER,
- (RECEIVE_ENABLE |
- TRANSMIT_ENABLE |
- RECEIVER_LINE_ST_ENABLE
- )
- );
- }
-
- return 0;
-}
-
-int
-BSP_uart_termios_write_com2(int minor, const char *buf, int len)
-{
- if(len <= 0)
- {
- return 0;
- }
-
- /* If there TX buffer is busy - something is royally screwed up */
- assert((uread(BSP_UART_COM2, LSR) & THRE) != 0);
-
- if(termios_stopped_com2)
- {
- /* CTS low */
- termios_tx_hold_com2 = *buf;
- termios_tx_hold_valid_com2 = 1;
- return 0;
- }
-
- /* Write character */
-
- uwrite(BSP_UART_COM2, THR, *buf & 0xff);
-
- /* Enable interrupts if necessary */
- if(!termios_tx_active_com2)
- {
- termios_tx_active_com2 = 1;
- uwrite(BSP_UART_COM2, IER,
- (RECEIVE_ENABLE |
- TRANSMIT_ENABLE |
- RECEIVER_LINE_ST_ENABLE
- )
- );
- }
-
- return 0;
-}
-
-void
-BSP_uart_termios_isr_com1(void)
-{
- unsigned char buf[40];
- int off, ret, vect;
-
- off = 0;
-
- for(;;)
- {
- vect = uread(BSP_UART_COM1, IIR) & 0xf;
-
- switch(vect)
- {
- case NO_MORE_INTR :
- /* No more interrupts */
- if(off != 0)
- {
- /* Update rx buffer */
- rtems_termios_enqueue_raw_characters(termios_ttyp_com1,
- (char *)buf,
- off);
- }
- return;
- case TRANSMITTER_HODING_REGISTER_EMPTY :
- /*
- * TX holding empty: we have to disable these interrupts
- * if there is nothing more to send.
- */
-
- ret = rtems_termios_dequeue_characters(termios_ttyp_com1, 1);
-
- /* If nothing else to send disable interrupts */
- if(ret == 0)
- {
- uwrite(BSP_UART_COM1, IER,
- (RECEIVE_ENABLE |
- RECEIVER_LINE_ST_ENABLE
- )
- );
- termios_tx_active_com1 = 0;
- }
- break;
- case RECEIVER_DATA_AVAIL :
- case CHARACTER_TIMEOUT_INDICATION:
- /* RX data ready */
- assert(off < sizeof(buf));
- buf[off++] = uread(BSP_UART_COM1, RBR);
- break;
- case RECEIVER_ERROR:
- /* RX error: eat character */
- uartError(BSP_UART_COM1);
- break;
- default:
- /* Should not happen */
- assert(0);
- return;
- }
- }
-}
-
-void
-BSP_uart_termios_isr_com2()
-{
- unsigned char buf[40];
- int off, ret, vect;
-
- off = 0;
-
- for(;;)
- {
- vect = uread(BSP_UART_COM2, IIR) & 0xf;
-
- switch(vect)
- {
- case NO_MORE_INTR :
- /* No more interrupts */
- if(off != 0)
- {
- /* Update rx buffer */
- rtems_termios_enqueue_raw_characters(termios_ttyp_com2,
- (char *)buf,
- off);
- }
- return;
- case TRANSMITTER_HODING_REGISTER_EMPTY :
- /*
- * TX holding empty: we have to disable these interrupts
- * if there is nothing more to send.
- */
-
- ret = rtems_termios_dequeue_characters(termios_ttyp_com2, 1);
-
- /* If nothing else to send disable interrupts */
- if(ret == 0)
- {
- uwrite(BSP_UART_COM2, IER,
- (RECEIVE_ENABLE |
- RECEIVER_LINE_ST_ENABLE
- )
- );
- termios_tx_active_com2 = 0;
- }
- break;
- case RECEIVER_DATA_AVAIL :
- case CHARACTER_TIMEOUT_INDICATION:
- /* RX data ready */
- assert(off < sizeof(buf));
- buf[off++] = uread(BSP_UART_COM2, RBR);
- break;
- case RECEIVER_ERROR:
- /* RX error: eat character */
- uartError(BSP_UART_COM2);
- break;
- default:
- /* Should not happen */
- assert(0);
- return;
- }
- }
-}
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