[PATCH 2/8] drm/amdkfd: Disable CP/SDMA ring/doorbell in MQD

[Felix Kuehling]

From: Jay Cornwall <Jay.Cornwall at amd.com>

The MQD represents an inactive context and should not have ring or
doorbell enable bits set. Doing so interferes with HWS which streams
the MQD onto the HQD. If enable bits are set this activates the ring
or doorbell before the HQD is fully configured.

Signed-off-by: Jay Cornwall <Jay.Cornwall at amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c | 34 +++++++-----------------
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c  |  7 ++---
 2 files changed, 11 insertions(+), 30 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
index 44ffd23..4859d26 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c
@@ -189,12 +189,9 @@ static int update_mqd(struct mqd_manager *mm, void *mqd,
 	if (q->format == KFD_QUEUE_FORMAT_AQL)
 		m->cp_hqd_pq_control |= NO_UPDATE_RPTR;
 
-	q->is_active = false;
-	if (q->queue_size > 0 &&
+	q->is_active = (q->queue_size > 0 &&
 			q->queue_address != 0 &&
-			q->queue_percent > 0) {
-		q->is_active = true;
-	}
+			q->queue_percent > 0);
 
 	return 0;
 }
@@ -215,24 +212,17 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 	m->sdma_rlc_rb_base_hi = upper_32_bits(q->queue_address >> 8);
 	m->sdma_rlc_rb_rptr_addr_lo = lower_32_bits((uint64_t)q->read_ptr);
 	m->sdma_rlc_rb_rptr_addr_hi = upper_32_bits((uint64_t)q->read_ptr);
-	m->sdma_rlc_doorbell = q->doorbell_off <<
-			SDMA0_RLC0_DOORBELL__OFFSET__SHIFT |
-			1 << SDMA0_RLC0_DOORBELL__ENABLE__SHIFT;
+	m->sdma_rlc_doorbell =
+		q->doorbell_off << SDMA0_RLC0_DOORBELL__OFFSET__SHIFT;
 
 	m->sdma_rlc_virtual_addr = q->sdma_vm_addr;
 
 	m->sdma_engine_id = q->sdma_engine_id;
 	m->sdma_queue_id = q->sdma_queue_id;
 
-	q->is_active = false;
-	if (q->queue_size > 0 &&
+	q->is_active = (q->queue_size > 0 &&
 			q->queue_address != 0 &&
-			q->queue_percent > 0) {
-		m->sdma_rlc_rb_cntl |=
-				1 << SDMA0_RLC0_RB_CNTL__RB_ENABLE__SHIFT;
-
-		q->is_active = true;
-	}
+			q->queue_percent > 0);
 
 	return 0;
 }
@@ -359,19 +349,13 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd,
 	m->cp_hqd_pq_base_hi = upper_32_bits((uint64_t)q->queue_address >> 8);
 	m->cp_hqd_pq_rptr_report_addr_lo = lower_32_bits((uint64_t)q->read_ptr);
 	m->cp_hqd_pq_rptr_report_addr_hi = upper_32_bits((uint64_t)q->read_ptr);
-	m->cp_hqd_pq_doorbell_control = DOORBELL_EN |
-					DOORBELL_OFFSET(q->doorbell_off);
+	m->cp_hqd_pq_doorbell_control = DOORBELL_OFFSET(q->doorbell_off);
 
 	m->cp_hqd_vmid = q->vmid;
 
-	m->cp_hqd_active = 0;
-	q->is_active = false;
-	if (q->queue_size > 0 &&
+	q->is_active = (q->queue_size > 0 &&
 			q->queue_address != 0 &&
-			q->queue_percent > 0) {
-		m->cp_hqd_active = 1;
-		q->is_active = true;
-	}
+			q->queue_percent > 0);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
index 73cbfe1..4ea854f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c
@@ -163,12 +163,9 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd,
 				2 << CP_HQD_PQ_CONTROL__SLOT_BASED_WPTR__SHIFT;
 	}
 
-	q->is_active = false;
-	if (q->queue_size > 0 &&
+	q->is_active = (q->queue_size > 0 &&
 			q->queue_address != 0 &&
-			q->queue_percent > 0) {
-		q->is_active = true;
-	}
+			q->queue_percent > 0);
 
 	return 0;
 }
-- 
2.7.4