forked from Imagelibrary/rtems
263f4becea
This simplifies the RTEMS initialization and helps to avoid a memory overhead. The workspace demands of the IO manager were not included in the <rtems/confdefs.h> workspace size estimate. This is also fixed as a side-effect. Update documentation and move "Specifying Application Defined Device Driver Table" to the section end. This sub-section is not that important for the user. Mentioning this at the beginning may lead to confusion.
140 lines
4.1 KiB
C
140 lines
4.1 KiB
C
/*
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* RTEMS monitor IO (device drivers) support
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*
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* There are 2 "driver" things the monitor knows about.
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*
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* 1. Regular RTEMS drivers.
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* This is a table indexed by major device number and
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* containing driver entry points only.
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*
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* 2. Driver name table.
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* A separate table of names for drivers.
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* The table converts driver names to a major number
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* as index into the driver table and a minor number
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* for an argument to driver.
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*
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* Drivers are displayed with 'driver' command.
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* Names are displayed with 'name' command.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems.h>
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#include <rtems/monitor.h>
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#include <stdio.h>
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#include <stdlib.h> /* strtoul() */
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#include <inttypes.h>
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#define DATACOL 15
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#define CONTCOL DATACOL /* continued col */
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void
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rtems_monitor_driver_canonical(
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rtems_monitor_driver_t *canonical_driver,
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const void *driver_void
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)
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{
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const rtems_driver_address_table *d = (const rtems_driver_address_table *) driver_void;
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rtems_monitor_symbol_canonical_by_value(&canonical_driver->initialization,
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(void *) d->initialization_entry);
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rtems_monitor_symbol_canonical_by_value(&canonical_driver->open,
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(void *) d->open_entry);
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rtems_monitor_symbol_canonical_by_value(&canonical_driver->close,
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(void *) d->close_entry);
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rtems_monitor_symbol_canonical_by_value(&canonical_driver->read,
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(void *) d->read_entry);
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rtems_monitor_symbol_canonical_by_value(&canonical_driver->write,
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(void *) d->write_entry);
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rtems_monitor_symbol_canonical_by_value(&canonical_driver->control,
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(void *) d->control_entry);
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}
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const void *
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rtems_monitor_driver_next(
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void *object_info __attribute__((unused)),
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rtems_monitor_driver_t *canonical_driver,
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rtems_id *next_id
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)
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{
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uint32_t n = rtems_object_id_get_index(*next_id);
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if (n >= _IO_Number_of_drivers)
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goto failed;
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_Thread_Disable_dispatch();
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/*
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* dummy up a fake id and name for this item
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*/
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canonical_driver->id = n;
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canonical_driver->name = rtems_build_name('-', '-', '-', '-');
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*next_id += 1;
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return (const void *) (&_IO_Driver_address_table[n]);
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failed:
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*next_id = RTEMS_OBJECT_ID_FINAL;
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return 0;
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}
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void
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rtems_monitor_driver_dump_header(
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bool verbose __attribute__((unused))
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)
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{
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fprintf(stdout,"\
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Major Entry points\n");
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/*23456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
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0 1 2 3 4 5 6 7 */
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rtems_monitor_separator();
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}
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void
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rtems_monitor_driver_dump(
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rtems_monitor_driver_t *monitor_driver,
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bool verbose
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)
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{
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uint32_t length = 0;
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#if defined(RTEMS_USE_16_BIT_OBJECT)
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length += fprintf(stdout," %" PRId16 "", monitor_driver->id);
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#else
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length += fprintf(stdout," %" PRId32 "", monitor_driver->id);
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#endif
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length += rtems_monitor_pad(13, length);
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length += fprintf(stdout,"init: ");
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length += rtems_monitor_symbol_dump(&monitor_driver->initialization, verbose);
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length += fprintf(stdout,"; control: ");
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length += rtems_monitor_symbol_dump(&monitor_driver->control, verbose);
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length += fprintf(stdout,"\n");
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length = 0;
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length += rtems_monitor_pad(13, length);
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length += fprintf(stdout,"open: ");
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length += rtems_monitor_symbol_dump(&monitor_driver->open, verbose);
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length += fprintf(stdout,"; close: ");
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length += rtems_monitor_symbol_dump(&monitor_driver->close, verbose);
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length += fprintf(stdout,"\n");
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length = 0;
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length += rtems_monitor_pad(13, length);
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length += fprintf(stdout,"read: ");
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length += rtems_monitor_symbol_dump(&monitor_driver->read, verbose);
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length += fprintf(stdout,"; write: ");
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length += rtems_monitor_symbol_dump(&monitor_driver->write, verbose);
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length += fprintf(stdout,"\n");
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length = 0;
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}
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