_mali_osk_errcode_t mali_pp_stop_bus_wait(struct mali_pp_core *core)
{
int i;
const int request_loop_count = 20;
MALI_DEBUG_ASSERT_POINTER(core);
MALI_ASSERT_GROUP_LOCKED(core->group);
/* Send the stop bus command. */
mali_pp_stop_bus(core);
/* Wait for bus to be stopped */
for (i = 0; i < request_loop_count; i++)
{
if (mali_hw_core_register_read(&core->hw_core, MALI200_REG_ADDR_MGMT_STATUS) & MALI200_REG_VAL_STATUS_BUS_STOPPED)
break;
_mali_osk_time_ubusydelay(10);
}
if (request_loop_count == i)
{
MALI_PRINT_ERROR(("Mali PP: Failed to stop bus on %s. Status: 0x%08x\n", core->hw_core.description, mali_hw_core_register_read(&core->hw_core, MALI200_REG_ADDR_MGMT_STATUS)));
return _MALI_OSK_ERR_FAULT;
}
return _MALI_OSK_ERR_OK;
}
_mali_osk_errcode_t mali_pp_stop_bus_wait(struct mali_pp_core *core)
{
int i;
MALI_DEBUG_ASSERT_POINTER(core);
MALI_DEBUG_PRINT(2,("mali_pp_stop_bus_wait: core->hw_core %s\n", core->hw_core.description));
/// try power on the mali driver for recovery
mali_platform_power_mode_change(MALI_POWER_MODE_ON);
/* Send the stop bus command. */
mali_pp_stop_bus(core);
/* Wait for bus to be stopped */
for (i = 0; i < MALI_REG_POLL_COUNT_FAST; i++)
{
if (mali_hw_core_register_read(&core->hw_core, MALI200_REG_ADDR_MGMT_STATUS) & MALI200_REG_VAL_STATUS_BUS_STOPPED)
break;
}
if (MALI_REG_POLL_COUNT_FAST == i)
{
MALI_PRINT_ERROR(("Mali PP: Failed to stop bus on %s. Status: 0x%08x\n", core->hw_core.description, mali_hw_core_register_read(&core->hw_core, MALI200_REG_ADDR_MGMT_STATUS)));
return _MALI_OSK_ERR_FAULT;
}
return _MALI_OSK_ERR_OK;
}
static void mali_group_recovery_reset(struct mali_group *group)
{
MALI_ASSERT_GROUP_LOCKED(group);
/* Stop cores, bus stop */
if (NULL != group->pp_core)
{
mali_pp_stop_bus(group->pp_core);
}
if (NULL != group->gp_core)
{
mali_gp_stop_bus(group->gp_core);
}
/* Flush MMU */
mali_mmu_activate_fault_flush_page_directory(group->mmu);
mali_mmu_page_fault_done(group->mmu);
/* Wait for cores to stop bus */
if (NULL != group->pp_core)
{
mali_pp_stop_bus_wait(group->pp_core);
}
if (NULL != group->gp_core)
{
mali_gp_stop_bus_wait(group->gp_core);
}
/* Reset cores */
if (NULL != group->pp_core)
{
mali_pp_hard_reset(group->pp_core);
}
if (NULL != group->gp_core)
{
mali_gp_hard_reset(group->gp_core);
}
/* Reset MMU */
mali_mmu_reset(group->mmu);
group->session = NULL;
}
