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bsp/t32mppc: Convert to Termios device

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This commit is contained in:
Sebastian Huber
2015-11-27 10:39:33 +01:00
parent 50552818d7
commit 0a3110158f
3 changed files with 141 additions and 155 deletions
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c/src/lib/libbsp/powerpc/t32mppc/Makefile.am
+2 -6
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@@ -72,12 +72,8 @@ libbsp_a_SOURCES += ../../shared/src/irq-shell.c
libbsp_a_SOURCES += irq/irq.c
# Console
libbsp_a_SOURCES += ../../shared/console.c \
../../shared/console_select.c \
console/console-config.c \
../../shared/console_read.c \
../../shared/console_write.c \
../../shared/console_control.c
libbsp_a_SOURCES += ../../shared/console-termios.c
libbsp_a_SOURCES += console/console.c
libbsp_a_LIBADD = ../../../libcpu/@RTEMS_CPU@/shared/cpuIdent.rel \
../../../libcpu/@RTEMS_CPU@/shared/cache.rel \
c/src/lib/libbsp/powerpc/t32mppc/console/console-config.c
-149
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@@ -1,149 +0,0 @@
/*
* Copyright (c) 2012 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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.
*/
/*
* Console driver for Lauterbach Trace32 Simulator. The implementation is
* based on the example in "demo/powerpc/etc/terminal/terminal_mpc85xx.cmm" in
* the Trace32 system directory.
*/
#include <rtems/bspIo.h>
#include <rtems/libio.h>
#include <rtems/termiostypes.h>
#include <libchip/serial.h>
#include <libchip/sersupp.h>
#define CONSOLE_COUNT 1
volatile unsigned char messagebufferin [256];
volatile unsigned char messagebufferout [256];
static void initialize(int minor)
{
/* Nothing to do */
}
static int first_open(int major, int minor, void *arg)
{
rtems_libio_open_close_args_t *oc = (rtems_libio_open_close_args_t *) arg;
struct rtems_termios_tty *tty = (struct rtems_termios_tty *) oc->iop->data1;
console_data *cd = &Console_Port_Data [minor];
cd->termios_data = tty;
rtems_termios_set_initial_baud(tty, 115200);
return 0;
}
static int last_close(int major, int minor, void *arg)
{
return 0;
}
static int read_polled(int minor)
{
static int bufsize;
static int bufindex;
int c;
if (bufsize == 0) {
int new_bufsize = messagebufferin [0];
if (new_bufsize != 0) {
bufsize = new_bufsize;
bufindex = 0;
} else {
return -1;
}
}
c = messagebufferin [4 + bufindex];
++bufindex;
if (bufindex >= bufsize) {
messagebufferin [0] = 0;
bufsize = 0;
}
return c;
}
static void write_polled(int minor, char c)
{
while (messagebufferout[0] != 0) {
/* Wait for ready */
}
messagebufferout [4] = (unsigned char) c;
messagebufferout [0] = 1;
}
static ssize_t write_support_polled(
int minor,
const char *s,
size_t n
)
{
ssize_t i = 0;
for (i = 0; i < n; ++i) {
write_polled(minor, s [i]);
}
return n;
}
static int set_attribues(int minor, const struct termios *term)
{
return -1;
}
static const console_fns t32mppc_console_fns = {
.deviceProbe = libchip_serial_default_probe,
.deviceFirstOpen = first_open,
.deviceLastClose = last_close,
.deviceRead = read_polled,
.deviceWrite = write_support_polled,
.deviceInitialize = initialize,
.deviceWritePolled = write_polled,
.deviceSetAttributes = set_attribues,
.deviceOutputUsesInterrupts = false
};
unsigned long Console_Configuration_Count = CONSOLE_COUNT;
console_tbl Console_Configuration_Ports [CONSOLE_COUNT] = {
{
.sDeviceName = "/dev/ttyS0",
.deviceType = SERIAL_CUSTOM,
.pDeviceFns = &t32mppc_console_fns
}
};
static void output_char(char c)
{
const console_fns *con = Console_Port_Tbl [Console_Port_Minor]->pDeviceFns;
if (c == '\n') {
con->deviceWritePolled((int) Console_Port_Minor, '\r');
}
con->deviceWritePolled((int) Console_Port_Minor, c);
}
BSP_output_char_function_type BSP_output_char = output_char;
BSP_polling_getchar_function_type BSP_poll_char = NULL;
c/src/lib/libbsp/powerpc/t32mppc/console/console.c
+139
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@@ -0,0 +1,139 @@
/*
* Copyright (c) 2012, 2015 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* 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.
*/
/*
* Console driver for Lauterbach Trace32 Simulator. The implementation is
* based on the example in "demo/powerpc/etc/terminal/terminal_mpc85xx.cmm" in
* the Trace32 system directory.
*/
#include <rtems/bspIo.h>
#include <rtems/console.h>
#include <rtems/termiostypes.h>
volatile unsigned char messagebufferin[256];
volatile unsigned char messagebufferout[256];
typedef struct {
rtems_termios_device_context base;
int input_size;
int input_index;
} t32_console_context;
static t32_console_context t32_console_instance;
static bool t32_console_first_open(
rtems_termios_tty *tty,
rtems_termios_device_context *base,
struct termios *term,
rtems_libio_open_close_args_t *args
)
{
rtems_termios_set_initial_baud(tty, 115200);
return true;
}
static int t32_console_read_polled(rtems_termios_device_context *base)
{
t32_console_context *ctx = (t32_console_context *) base;
int c;
if (ctx->input_size == 0) {
int new_bufsize = messagebufferin[0];
if (new_bufsize != 0) {
ctx->input_size = new_bufsize;
ctx->input_index = 0;
} else {
return -1;
}
}
c = messagebufferin[4 + ctx->input_index];
++ctx->input_index;
if (ctx->input_index >= ctx->input_size) {
messagebufferin[0] = 0;
ctx->input_size = 0;
}
return c;
}
static void t32_console_write_char_polled(char c)
{
while (messagebufferout[0] != 0) {
/* Wait for ready */
}
messagebufferout[4] = (unsigned char) c;
messagebufferout[0] = 1;
}
static void t32_console_write_polled(
rtems_termios_device_context *base,
const char *s,
size_t n
)
{
size_t i;
for (i = 0; i < n; ++i) {
t32_console_write_char_polled(s[i]);
}
}
const rtems_termios_device_handler t32_console_handler = {
.first_open = t32_console_first_open,
.poll_read = t32_console_read_polled,
.write = t32_console_write_polled,
.mode = TERMIOS_POLLED
};
rtems_device_driver console_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
)
{
t32_console_context *ctx = &t32_console_instance;
rtems_termios_initialize();
rtems_termios_device_context_initialize(&ctx->base, "T32 Console");
rtems_termios_device_install(
CONSOLE_DEVICE_NAME,
major,
0,
&t32_console_handler,
NULL,
&ctx->base
);
return RTEMS_SUCCESSFUL;
}
static void t32_output_char(char c)
{
if (c == '\n') {
t32_console_write_char_polled('\r');
}
t32_console_write_char_polled(c);
}
BSP_output_char_function_type BSP_output_char = t32_output_char;
BSP_polling_getchar_function_type BSP_poll_char = NULL;