[PATCH v4 02/10] drm/amdgpu/mes11: plumb unmap_flag_addr + NOTIFY_WORK_ON_UNMAPPED_QUEUE

[Jesse Zhang <Jesse.Zhang@amd.com>]

From: "Jesse.zhang" <Jesse.zhang@amd.com>

Pass the new mes_add_queue_input.unmap_flag_addr through to the
MESAPI__ADD_QUEUE packet, and route MES_MISC_OP_NOTIFY_WORK_ON_UNMAPPED_QUEUE
to the matching MESAPI_MISC opcode.

Note: the MES v11 firmware spec does not (yet) carry a per-queue
is_user_mode_submission bit, so SDMA UMQs on chips with MES v11 may
still see PROTECTED_FENCE-as-queue-done behaviour after the first IB
until firmware adds the bit.  The wakeup mechanism (NOTIFY) is wired
up so that path is ready when firmware lands.

Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/mes_v11_0.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
index a926a330700e..575cc4a684b1 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
@@ -362,6 +362,16 @@ static int mes_v11_0_add_hw_queue(struct amdgpu_mes *mes,
 
 	mes_add_queue_pkt.exclusively_scheduled = input->exclusively_scheduled;
 
+	/*
+	 * unmap_flag_addr is plumbed through but only honoured by MES when
+	 * the global use_add_queue_unmap_flag_addr flag is set in
+	 * SET_HW_RESOURCES.  MES v11 firmware spec does not carry a
+	 * per-queue is_user_mode_submission bit, so SDMA UMQs on chips with
+	 * MES v11 may still see PROTECTED_FENCE-as-queue-done behaviour
+	 * until firmware adds the bit.
+	 */
+	mes_add_queue_pkt.unmap_flag_addr = input->unmap_flag_addr;
+
 	return mes_v11_0_submit_pkt_and_poll_completion(mes,
 			&mes_add_queue_pkt, sizeof(mes_add_queue_pkt),
 			offsetof(union MESAPI__ADD_QUEUE, api_status));
@@ -660,6 +670,10 @@ static int mes_v11_0_misc_op(struct amdgpu_mes *mes,
 		misc_pkt.change_config.option.bits.limit_single_process =
 				input->change_config.option.limit_single_process;
 		break;
+	case MES_MISC_OP_NOTIFY_WORK_ON_UNMAPPED_QUEUE:
+		misc_pkt.opcode = MESAPI_MISC__NOTIFY_WORK_ON_UNMAPPED_QUEUE;
+		misc_pkt.queue_sch_level = input->notify_work.priority_level;
+		break;
 
 	default:
 		drm_err(adev_to_drm(mes->adev), "unsupported misc op (%d)\n", input->op);
-- 
2.49.0