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| author | Jason-JH.Lin <jason-jh.lin@mediatek.com> | 2024-03-07 09:34:56 +0800 |
|---|---|---|
| committer | AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> | 2024-04-23 12:16:55 +0200 |
| commit | 263801f8e5a159cff2dfbc2a1d9cf9f1afecfa81 (patch) | |
| tree | 2f4e6ecac6e972889a99d0ff13287bd18d758269 /drivers/soc | |
| parent | 49ddaa495f8b60c8c4022ebe540024dd870e4dd1 (diff) | |
| download | lwn-263801f8e5a159cff2dfbc2a1d9cf9f1afecfa81.tar.gz lwn-263801f8e5a159cff2dfbc2a1d9cf9f1afecfa81.zip | |
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: 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>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/mediatek/mtk-cmdq-helper.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 1a1f1b260a06..4cd1a25866a9 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -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} }; |