@@ -372,6 +372,18 @@ 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_client *cl = pkt->cl;
+ struct cmdq_instruction inst = { {0} };
+
+ inst.op = CMDQ_CODE_JUMP;
+ inst.offset = 1;
+ inst.value = addr >> cmdq_mbox_shift(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} };
@@ -213,6 +213,17 @@ 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
Add jump function so that client can jump to any address which contains instruction. Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com> --- drivers/soc/mediatek/mtk-cmdq-helper.c | 12 ++++++++++++ include/linux/soc/mediatek/mtk-cmdq.h | 11 +++++++++++ 2 files changed, 23 insertions(+) -- 2.18.0