soc: mediatek: cmdq: add jump function (946f1792) · Commits · 戴 / test

drivers/soc/mediatek/mtk-cmdq-helper.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -13,6 +13,7 @@
		#define CMDQ_POLL_ENABLE_MASK BIT(0)
		#define CMDQ_EOC_IRQ_EN BIT(0)
		#define CMDQ_REG_TYPE 1
		#define CMDQ_JUMP_RELATIVE 1

		struct cmdq_instruction {
		union {
		@@ -407,6 +408,18 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)
		}
		EXPORT_SYMBOL(cmdq_pkt_assign);

		int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr)
		{
		struct cmdq_instruction inst = {};

		inst.op = CMDQ_CODE_JUMP;
		inst.offset = CMDQ_JUMP_RELATIVE;
		inst.value = addr >>
		cmdq_get_shift_pa(((struct cmdq_client *)pkt->cl)->chan);
		return cmdq_pkt_append_command(pkt, inst);
		}
		EXPORT_SYMBOL(cmdq_pkt_jump);

		int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
		{
		struct cmdq_instruction inst = { {0} };

+11 −0

Original line number	Diff line number	Diff line
		@@ -252,6 +252,17 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
		*/
		int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);

		/**
		* cmdq_pkt_jump() - Append jump command to the CMDQ packet, ask GCE
		* to execute an instruction that change current thread PC to
		* a physical address which should contains more instruction.
		* @pkt: the CMDQ packet
		* @addr: physical address of target instruction buffer
		*
		* Return: 0 for success; else the error code is returned
		*/
		int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr);

		/**
		* cmdq_pkt_finalize() - Append EOC and jump command to pkt.
		* @pkt: the CMDQ packet