[PATCH v6 11/20] soc: mediatek: mtk-cmdq: Add mminfra_offset adjustment for DRAM addresses
From: Jason-JH Lin <hidden>
Date: 2025-06-01 17:34:20
Also in:
dri-devel, linux-devicetree, linux-media, linux-mediatek, lkml
Subsystem:
arm/mediatek soc support, the rest · Maintainers:
Matthias Brugger, AngeloGioacchino Del Regno, Linus Torvalds
Since GCE has been moved to MMINFRA in MT8196, all transactions from MMINFRA to DRAM will have their addresses adjusted by subtracting a mminfra_offset. Therefore, the CMDQ helper driver needs to get the mminfra_offset value of the SoC from cmdq_mbox_priv of cmdq_pkt and then add it to the DRAM address when generating instructions to ensure GCE accesses the correct DRAM address. CMDQ users can then call CMDQ helper APIs as usual. Signed-off-by: Jason-JH Lin <redacted> --- drivers/soc/mediatek/mtk-cmdq-helper.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 7e86299213d8..ced798e8d6b4 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c@@ -358,6 +358,7 @@ int cmdq_pkt_mem_move(struct cmdq_pkt *pkt, dma_addr_t src_addr, dma_addr_t dst_ int ret; /* read the value of src_addr into high_addr_reg_idx */ + src_addr += pkt->priv.mminfra_offset; ret = cmdq_pkt_assign(pkt, high_addr_reg_idx, CMDQ_ADDR_HIGH(src_addr)); if (ret < 0) return ret;
@@ -366,6 +367,7 @@ int cmdq_pkt_mem_move(struct cmdq_pkt *pkt, dma_addr_t src_addr, dma_addr_t dst_ return ret; /* write the value of value_reg_idx into dst_addr */ + dst_addr += pkt->priv.mminfra_offset; ret = cmdq_pkt_assign(pkt, high_addr_reg_idx, CMDQ_ADDR_HIGH(dst_addr)); if (ret < 0) return ret;
@@ -491,7 +493,7 @@ int cmdq_pkt_poll_addr(struct cmdq_pkt *pkt, dma_addr_t addr, u32 value, u32 mas inst.op = CMDQ_CODE_MASK; inst.dst_t = CMDQ_REG_TYPE; inst.sop = CMDQ_POLL_ADDR_GPR; - inst.value = addr; + inst.value = addr + pkt->priv.mminfra_offset; ret = cmdq_pkt_append_command(pkt, inst); if (ret < 0) return ret;
@@ -551,7 +553,7 @@ int cmdq_pkt_jump_abs(struct cmdq_pkt *pkt, dma_addr_t addr, u8 shift_pa) struct cmdq_instruction inst = { .op = CMDQ_CODE_JUMP, .offset = CMDQ_JUMP_ABSOLUTE, - .value = addr >> shift_pa + .value = (addr + pkt->priv.mminfra_offset) >> pkt->priv.shift_pa }; return cmdq_pkt_append_command(pkt, inst); }
--
2.43.0