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

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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: Jason-JH.Lin <jason-jh.lin@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240307013458.23550-3-jason-jh.lin@mediatek.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
This commit is contained in:
Jason-JH.Lin 2024-03-07 09:34:56 +08:00 committed by AngeloGioacchino Del Regno
parent 49ddaa495f
commit 263801f8e5
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GPG Key ID: 9A3604CFAD978478
2 changed files with 38 additions and 0 deletions
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26
drivers/soc/mediatek/mtk-cmdq-helper.c
View File

@ -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} };

12
include/linux/soc/mediatek/mtk-cmdq.h
View File

@ -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