altos: Mark local functions 'static'
[fw/altos] / src / kernel / ao_log.c
index 76e0e68c56c89a3286a5f53500210f709b4ef497..c0a42b295938586cd9f968af2cdb2445ae28e373 100644 (file)
@@ -3,7 +3,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
 #include "ao.h"
 #include <ao_log.h>
 #include <ao_config.h>
+#if HAS_TRACKER
+#include <ao_tracker.h>
+#endif
 
-__pdata uint32_t ao_log_current_pos;
-__pdata uint32_t ao_log_end_pos;
-__pdata uint32_t ao_log_start_pos;
-__xdata uint8_t        ao_log_running;
-__pdata enum ao_flight_state ao_log_state;
-__xdata uint16_t ao_flight_number;
+uint8_t        ao_log_mutex;
+uint32_t ao_log_current_pos;
+uint32_t ao_log_end_pos;
+uint32_t ao_log_start_pos;
+uint8_t        ao_log_running;
+enum ao_flight_state ao_log_state;
+int16_t ao_flight_number;
 
 void
 ao_log_flush(void)
@@ -42,7 +47,7 @@ struct ao_log_erase {
        uint16_t flight;
 };
 
-static __xdata struct ao_log_erase erase;
+static struct ao_log_erase erase;
 
 #ifndef LOG_MAX_ERASE
 #define LOG_MAX_ERASE  16
@@ -67,6 +72,18 @@ ao_log_write_erase(uint8_t pos)
        erase.mark = LOG_ERASE_MARK;
        erase.flight = ao_flight_number;
        ao_config_write(ao_log_erase_pos(pos),  &erase, sizeof (erase));
+
+#if USE_EEPROM_CONFIG
+       if (pos == 0) {
+               uint8_t i;
+               for (i = 1; i < LOG_MAX_ERASE; i++) {
+                       erase.mark = ~LOG_ERASE_MARK;
+                       erase.flight = 0;
+                       ao_config_write(ao_log_erase_pos(i), &erase, sizeof (erase));
+               }
+       }
+#endif
+
        ao_config_flush();
 }
 
@@ -94,8 +111,87 @@ ao_log_erase_mark(void)
        ao_config_put();
 }
 
+#ifndef AO_LOG_UNCOMMON
+/*
+ * Common logging functions which depend on the type of the log data
+ * structure.
+ */
+
+ao_log_type ao_log_data;
+
 static uint8_t
-ao_log_slots()
+ao_log_csum(uint8_t *b) 
+{
+       uint8_t sum = 0x5a;
+       uint8_t i;
+
+       for (i = 0; i < sizeof (ao_log_type); i++)
+               sum += *b++;
+       return -sum;
+}
+
+uint8_t
+ao_log_write(ao_log_type *log) 
+{
+       uint8_t wrote = 0;
+       /* set checksum */
+       log->csum = 0;
+       log->csum = ao_log_csum((uint8_t *) log);
+       ao_mutex_get(&ao_log_mutex); {
+               if (ao_log_current_pos >= ao_log_end_pos && ao_log_running)
+                       ao_log_stop();
+               if (ao_log_running) {
+                       wrote = 1;
+                       ao_storage_write(ao_log_current_pos,
+                                        log,
+                                        sizeof (ao_log_type));
+                       ao_log_current_pos += sizeof (ao_log_type);
+               }
+       } ao_mutex_put(&ao_log_mutex);
+       return wrote;
+}
+
+uint8_t
+ao_log_check_data(void)
+{
+       if (ao_log_csum((uint8_t *) &ao_log_data) != 0)
+               return 0;
+       return 1;
+}
+
+uint8_t
+ao_log_check_clear(void)
+{
+       uint8_t *b = (uint8_t *) &ao_log_data;
+       uint8_t i;
+
+       for (i = 0; i < sizeof (ao_log_type); i++) {
+               if (*b++ != 0xff)
+                       return 0;
+       }
+       return 1;
+}
+
+int16_t
+ao_log_flight(uint8_t slot)
+{
+       if (!ao_storage_read(ao_log_pos(slot),
+                            &ao_log_data,
+                            sizeof (ao_log_type)))
+               return -(int16_t) (slot + 1);
+
+       if (ao_log_check_clear())
+               return 0;
+
+       if (!ao_log_check_data() || ao_log_data.type != AO_LOG_FLIGHT)
+               return -(int16_t) (slot + 1);
+
+       return ao_log_data.u.flight.flight;
+}
+#endif
+
+static uint8_t
+ao_log_slots(void)
 {
        return (uint8_t) (ao_storage_log_max / ao_config.flight_log_max);
 }
@@ -106,39 +202,59 @@ ao_log_pos(uint8_t slot)
        return ((slot) * ao_config.flight_log_max);
 }
 
-static uint16_t
+static int16_t
 ao_log_max_flight(void)
 {
        uint8_t         log_slot;
        uint8_t         log_slots;
-       uint16_t        log_flight;
-       uint16_t        max_flight = 0;
+       int16_t         log_flight;
+       int16_t         max_flight = 0;
 
        /* Scan the log space looking for the biggest flight number */
        log_slots = ao_log_slots();
        for (log_slot = 0; log_slot < log_slots; log_slot++) {
                log_flight = ao_log_flight(log_slot);
-               if (!log_flight)
+               if (log_flight <= 0)
                        continue;
-               if (max_flight == 0 || (int16_t) (log_flight - max_flight) > 0)
+               if (max_flight == 0 || log_flight > max_flight)
                        max_flight = log_flight;
        }
        return max_flight;
 }
 
-void
-ao_log_scan(void) __reentrant
+static void
+ao_log_erase(uint8_t slot) 
 {
-       uint8_t         log_slot;
-       uint8_t         log_slots;
-       uint8_t         log_want;
-
-       ao_config_get();
+       uint32_t log_current_pos, log_end_pos;
+
+       ao_log_erase_mark();
+       log_current_pos = ao_log_pos(slot);
+       log_end_pos = log_current_pos + ao_config.flight_log_max;
+       while (log_current_pos < log_end_pos) {
+               uint8_t i;
+               static uint8_t b;
+
+               /*
+                * Check to see if we've reached the end of
+                * the used memory to avoid re-erasing the same
+                * memory over and over again
+                */
+               for (i = 0; i < 16; i++) {
+                       if (ao_storage_read(log_current_pos + i, &b, 1))
+                               if (b != 0xff)
+                                       break;
+               }
+               if (i == 16)
+                       break;
+               ao_storage_erase(log_current_pos);
+               log_current_pos += ao_storage_block;
+       }
+}
 
-       ao_flight_number = ao_log_max_flight();
-       if (ao_flight_number)
-               if (++ao_flight_number == 0)
-                       ao_flight_number = 1;
+static void
+ao_log_find_max_erase_flight(void) 
+{
+       uint8_t log_slot;
 
        /* Now look through the log of flight numbers from erase operations and
         * see if the last one is bigger than what we found above
@@ -154,6 +270,81 @@ ao_log_scan(void) __reentrant
        }
        if (ao_flight_number == 0)
                ao_flight_number = 1;
+}
+
+uint8_t
+ao_log_scan(void) 
+{
+       uint8_t         log_slot;
+       uint8_t         log_slots;
+#if FLIGHT_LOG_APPEND
+       uint8_t         ret;
+#else
+       uint8_t         log_want;
+#endif
+
+       ao_config_get();
+
+       /* Get any existing flight number */
+       ao_flight_number = ao_log_max_flight();
+
+#if FLIGHT_LOG_APPEND
+
+       /* Deal with older OS versions which stored multiple
+        * flights in rom by erasing everything after the first
+        * slot
+        */
+       if (ao_config.flight_log_max != ao_storage_log_max) {
+               log_slots = ao_log_slots();
+               for (log_slot = 1; log_slot < log_slots; log_slot++) {
+                       if (ao_log_flight(log_slot) != 0)
+                               ao_log_erase(log_slot);
+               }
+               ao_config_log_fix_append();
+       }
+       ao_log_current_pos = ao_log_pos(0);
+       ao_log_end_pos = ao_log_current_pos + ao_storage_log_max;
+
+       if (ao_flight_number) {
+               uint32_t        full = ao_log_current_pos;
+               uint32_t        empty = ao_log_end_pos - AO_LOG_SIZE;
+
+               /* If there's already a flight started, then find the
+                * end of it
+                */
+               for (;;) {
+                       ao_log_current_pos = (full + empty) >> 1;
+                       ao_log_current_pos -= ao_log_current_pos % AO_LOG_SIZE;
+
+                       if (ao_log_current_pos == full) {
+                               if (ao_log_check(ao_log_current_pos) != AO_LOG_EMPTY)
+                                       ao_log_current_pos += AO_LOG_SIZE;
+                               break;
+                       }
+                       if (ao_log_current_pos == empty)
+                               break;
+
+                       if (ao_log_check(ao_log_current_pos) != AO_LOG_EMPTY) {
+                               full = ao_log_current_pos;
+                       } else {
+                               empty = ao_log_current_pos;
+                       }
+               }
+               ret = 1;
+       } else {
+               ao_log_find_max_erase_flight();
+               ret = 0;
+       }
+       ao_wakeup(&ao_flight_number);
+       return ret;
+#else
+       if (ao_flight_number) {
+               ++ao_flight_number;
+               if (ao_flight_number <= 0)
+                       ao_flight_number = 1;
+       }
+
+       ao_log_find_max_erase_flight();
 
        /* With a flight number in hand, find a place to write a new log,
         * use the target flight number to index the available log slots so
@@ -174,8 +365,9 @@ ao_log_scan(void) __reentrant
                if (++log_slot >= log_slots)
                        log_slot = 0;
        } while (log_slot != log_want);
-
        ao_wakeup(&ao_flight_number);
+       return 0;
+#endif
 }
 
 void
@@ -210,15 +402,15 @@ ao_log_full(void)
 #endif
 
 #if LOG_ADC
-static __xdata struct ao_task ao_log_task;
+static struct ao_task ao_log_task;
 #endif
 
-void
-ao_log_list(void) __reentrant
+static void
+ao_log_list(void) 
 {
        uint8_t slot;
        uint8_t slots;
-       uint16_t flight;
+       int16_t flight;
 
        slots = ao_log_slots();
        for (slot = 0; slot < slots; slot++)
@@ -233,52 +425,43 @@ ao_log_list(void) __reentrant
        printf ("done\n");
 }
 
-void
-ao_log_delete(void) __reentrant
+static void
+ao_log_delete(void) 
 {
        uint8_t slot;
        uint8_t slots;
+       int16_t cmd_flight = 1;
 
-       ao_cmd_decimal();
+       ao_cmd_white();
+       if (ao_cmd_lex_c == '-') {
+               cmd_flight = -1;
+               ao_cmd_lex();
+       }
+       cmd_flight *= ao_cmd_decimal();
        if (ao_cmd_status != ao_cmd_success)
                return;
 
        slots = ao_log_slots();
        /* Look for the flight log matching the requested flight */
-       if (ao_cmd_lex_i) {
+       if (cmd_flight) {
                for (slot = 0; slot < slots; slot++) {
-                       if (ao_log_flight(slot) == ao_cmd_lex_i) {
-                               ao_log_erase_mark();
-                               ao_log_current_pos = ao_log_pos(slot);
-                               ao_log_end_pos = ao_log_current_pos + ao_config.flight_log_max;
-                               while (ao_log_current_pos < ao_log_end_pos) {
-                                       uint8_t i;
-                                       static __xdata uint8_t b;
-
-                                       /*
-                                        * Check to see if we've reached the end of
-                                        * the used memory to avoid re-erasing the same
-                                        * memory over and over again
-                                        */
-                                       for (i = 0; i < 16; i++) {
-                                               if (ao_storage_read(ao_log_current_pos + i, &b, 1))
-                                                       if (b != 0xff)
-                                                               break;
-                                       }
-                                       if (i == 16)
-                                               break;
-                                       ao_storage_erase(ao_log_current_pos);
-                                       ao_log_current_pos += ao_storage_block;
-                               }
+                       if (ao_log_flight(slot) == cmd_flight) {
+#if HAS_TRACKER
+                               ao_tracker_erase_start(cmd_flight);
+#endif
+                               ao_log_erase(slot);
+#if HAS_TRACKER
+                               ao_tracker_erase_end();
+#endif
                                puts("Erased");
                                return;
                        }
                }
        }
-       printf("No such flight: %d\n", ao_cmd_lex_i);
+       printf("No such flight: %d\n", cmd_flight);
 }
 
-__code struct ao_cmds ao_log_cmds[] = {
+const struct ao_cmds ao_log_cmds[] = {
        { ao_log_list,  "l\0List logs" },
        { ao_log_delete,        "d <flight-number>\0Delete flight" },
        { 0,    NULL },