Inter Core Interrupt Functions

Functions that implement Inter Core Interrupt mechanism. More...

Functions
__STATIC_FORCEINLINE void	CIDU_TriggerInterCoreInt (uint32_t send_core_id, uint32_t recv_core_id)
	Trigger interrupt to another core in a multi-core cluster. More...
__STATIC_FORCEINLINE uint32_t	CIDU_QueryCoreIntSenderMask (uint32_t recv_core_id)
	Core recv_core_id queries out who sends inter core interrupt to itself. More...
__STATIC_FORCEINLINE void	CIDU_ClearInterCoreIntReq (uint32_t send_core_id, uint32_t recv_core_id)
	Clear the corresponding bit/bits of ICI request triggered by sender core. More...

Detailed Description

Functions that implement Inter Core Interrupt mechanism.

Inter Core Interrupt (ICI) means that one core can send interrupt to another core in a multi-core cluster. CIDU ICI belongs to Internal Interrupt.

• CIDU ICI Interrupt ID is fixed to 16.

Function Documentation

CIDU_ClearInterCoreIntReq()

__STATIC_FORCEINLINE void CIDU_ClearInterCoreIntReq	(	uint32_t	send_core_id,
		uint32_t	recv_core_id
	)

Clear the corresponding bit/bits of ICI request triggered by sender core.

Core recv_core_id write 1 to clear the bit send_core_id of the core recv_core_id's COREn_INT_STATUS.

Parameters

[in]	send_core_id	the core id which wants to send the inter core interrupt
[in]	recv_core_id	the core id which will receive the inter core interrupt

Remarks

• If the ICI ISR has finished the job of send_core_id_n's ICI, then clear bit send_core_id_n; if it has finished send_core_id_n and send_core_id_m's, then should clear both the bits, etc.

Definition at line 309 of file core_feature_cidu.h.

{
    uint32_t val = 0;
    uint32_t* addr = (uint32_t*)CIDU_CORE_INT_STATUS_ADDR(recv_core_id);
 
    val = (uint32_t)(1UL << send_core_id);
    __SW(addr, val);
}

References __SW(), and CIDU_CORE_INT_STATUS_ADDR.

CIDU_QueryCoreIntSenderMask()

__STATIC_FORCEINLINE uint32_t CIDU_QueryCoreIntSenderMask

(

uint32_t

recv_core_id

)

Core recv_core_id queries out who sends inter core interrupt to itself.

In the ISR of ICI, receive core can query if bit[n] of this return value is 1, core n sends the current ICI, if bit[m] is 1, then core m also sends, etc.

Parameters

[in]

recv_core_id

the core id which receives the inter core interrupt

Returns

Value that shows sender core's ID n whose bitn is 1

Remarks

• If the ICI ISR has finished the job, should call CIDU_ClearInterCoreIntReq to clear the IRQ

Definition at line 290 of file core_feature_cidu.h.

{
    uint32_t val = 0;
    uint32_t* addr = (uint32_t*)CIDU_CORE_INT_STATUS_ADDR(recv_core_id);
 
    val = __LW(addr);
    return val;
}

References __LW(), and CIDU_CORE_INT_STATUS_ADDR.

CIDU_TriggerInterCoreInt()

__STATIC_FORCEINLINE void CIDU_TriggerInterCoreInt	(	uint32_t	send_core_id,
		uint32_t	recv_core_id
	)

Trigger interrupt to another core in a multi-core cluster.

When called by core send_core_id, CIDU will trigger ICI to core recv_core_id automatically. and core recv_core_id could query CIDU_GetCoreIntSenderId to know the sender.

Parameters

[in]	send_core_id	the core id which want to send the inter core interrupt
[in]	recv_core_id	the core id which will receive the inter core interrupt

Remarks

• The core recv_core_id need to call CIDU_ClearInterCoreIntReq to clear the corresponding bit/bits of its own COREn_INT_STATUS.
• It supports that multiple cores call CIDU_TriggerInterCoreInt simultaneously.

See also

• CIDU_GetCoreIntSenderId
• CIDU_ClearInterCoreIntReq

Definition at line 271 of file core_feature_cidu.h.

{
    uint32_t val = 0;
    uint32_t* addr = (uint32_t*)CIDU_ICI_SHADOW_ADDR;
 
    val = (uint32_t)(send_core_id << CIDU_ICI_SEND_CORE_ID_POS) | (uint32_t)(recv_core_id);
    __SW(addr, (uint32_t)val);
}

References __SW(), CIDU_ICI_SEND_CORE_ID_POS, and CIDU_ICI_SHADOW_ADDR.