diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/gen5200/startup/bestcomm.c')
-rw-r--r-- | c/src/lib/libbsp/powerpc/gen5200/startup/bestcomm.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/gen5200/startup/bestcomm.c b/c/src/lib/libbsp/powerpc/gen5200/startup/bestcomm.c new file mode 100644 index 0000000000..cbb1c0e91d --- /dev/null +++ b/c/src/lib/libbsp/powerpc/gen5200/startup/bestcomm.c @@ -0,0 +1,107 @@ +/* + * Copyright (c) 2010-2013 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.com/license/LICENSE. + */ + +#define NDEBUG + +#include <bsp/bestcomm.h> + +#include <string.h> + +#include <bsp/mpc5200.h> + +static void bestcomm_irq_handler(void *arg) +{ + bestcomm_irq *self = arg; + + bestcomm_irq_clear(self); + bestcomm_irq_wakeup_event_task(self); +} + +void bestcomm_irq_create(bestcomm_irq *self, int task_index) +{ + assert(task_index >= 0 && task_index <= 15); + + self->task_index = task_index; + self->event_task_id = rtems_task_self(); + bestcomm_glue_irq_install(task_index, bestcomm_irq_handler, self); +} + +void bestcomm_irq_destroy(const bestcomm_irq *self) +{ + bestcomm_glue_irq_install(self->task_index, NULL, NULL); +} + +void bestcomm_task_create(bestcomm_task *self, TaskId task_index) +{ + self->task_control_register = &mpc5200.sdma.tcr[task_index]; + self->variable_table = BESTCOMM_TASK_ENTRY_TABLE[task_index].var_table; + self->task_index = task_index; + self->tdt_begin = NULL; + self->tdt_opcode_count = 0; + bestcomm_task_stop(self); + bestcomm_irq_create(&self->irq, task_index); +} + +void bestcomm_task_create_and_load( + bestcomm_task *self, + TaskId task_index, + const uint32_t *tdt_source_begin, + size_t tdt_size +) +{ + bestcomm_task_create(self, task_index); + bestcomm_task_load(self, tdt_source_begin, tdt_size); +} + +void bestcomm_task_destroy(bestcomm_task *self) +{ + bestcomm_task_stop(self); + bestcomm_task_free_tdt(self); +} + +void bestcomm_task_load(bestcomm_task *self, const uint32_t *tdt_source_begin, size_t tdt_size) +{ + assert(tdt_size % 4 == 0); + + bestcomm_task_irq_disable(self); + bestcomm_task_stop(self); + bestcomm_task_irq_clear(self); + bestcomm_task_irq_enable(self); + bestcomm_task_free_tdt(self); + bestcomm_task_clear_variables(self); + + self->tdt_opcode_count = tdt_size / 4; + + self->tdt_begin = bestcomm_malloc(tdt_size); + assert(self->tdt_begin != NULL); + uint32_t *tdt_last = self->tdt_begin + self->tdt_opcode_count - 1; + + memcpy(self->tdt_begin, tdt_source_begin, tdt_size); + + volatile bestcomm_task_entry *entry = bestcomm_task_get_task_entry(self); + entry->tdt_begin = self->tdt_begin; + entry->tdt_last = tdt_last; + + bestcomm_task_clear_pragmas(self); + bestcomm_task_set_priority(self, 0); +} + +void bestcomm_task_clear_variables(const bestcomm_task *self) +{ + int i; + + for (i = 0; i < 32; ++i) { + (*self->variable_table)[i] = 0; + } +} |