Unverified Commit 263801f8 authored by Jason-JH.Lin's avatar Jason-JH.Lin Committed by AngeloGioacchino Del Regno
Browse files

soc: mediatek: mtk-cmdq: Add cmdq_pkt_mem_move() function 



Add cmdq_pkt_mem_move() function to support CMDQ user making
an instruction for moving a value from a source address to a
destination address.

Signed-off-by: default avatarJason-JH.Lin <jason-jh.lin@mediatek.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240307013458.23550-3-jason-jh.lin@mediatek.com


Signed-off-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
parent 49ddaa49

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

+26 −0
Original line number Diff line number Diff line
@@ -290,6 +290,32 @@ int cmdq_pkt_write_s_mask_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx, 
}

EXPORT_SYMBOL(cmdq_pkt_write_s_mask_value);



int cmdq_pkt_mem_move(struct cmdq_pkt *pkt, dma_addr_t src_addr, dma_addr_t dst_addr)

{

	const u16 high_addr_reg_idx  = CMDQ_THR_SPR_IDX0;

	const u16 value_reg_idx = CMDQ_THR_SPR_IDX1;

	int ret;



	/* read the value of src_addr into high_addr_reg_idx */

	ret = cmdq_pkt_assign(pkt, high_addr_reg_idx, CMDQ_ADDR_HIGH(src_addr));

	if (ret < 0)

		return ret;

	ret = cmdq_pkt_read_s(pkt, high_addr_reg_idx, CMDQ_ADDR_LOW(src_addr), value_reg_idx);

	if (ret < 0)

		return ret;



	/* write the value of value_reg_idx into dst_addr */

	ret = cmdq_pkt_assign(pkt, high_addr_reg_idx, CMDQ_ADDR_HIGH(dst_addr));

	if (ret < 0)

		return ret;

	ret = cmdq_pkt_write_s(pkt, high_addr_reg_idx, CMDQ_ADDR_LOW(dst_addr), value_reg_idx);

	if (ret < 0)

		return ret;



	return 0;

}

EXPORT_SYMBOL(cmdq_pkt_mem_move);



int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event, bool clear)

{

	struct cmdq_instruction inst = { {0} };

include/linux/soc/mediatek/mtk-cmdq.h

+12 −0
Original line number Diff line number Diff line
@@ -184,6 +184,18 @@ int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx, 
int cmdq_pkt_write_s_mask_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx,

				u16 addr_low, u32 value, u32 mask);



/**

 * cmdq_pkt_mem_move() - append memory move command to the CMDQ packet

 * @pkt:	the CMDQ packet

 * @src_addr:	source address

 * @dst_addr:	destination address

 *

 * Appends a CMDQ command to copy the value found in `src_addr` to `dst_addr`.

 *

 * Return: 0 for success; else the error code is returned

 */

int cmdq_pkt_mem_move(struct cmdq_pkt *pkt, dma_addr_t src_addr, dma_addr_t dst_addr);



/**

 * cmdq_pkt_wfe() - append wait for event command to the CMDQ packet

 * @pkt:	the CMDQ packet