[PATCH v3 2/2] drm/amdkfd: get doorbell's absolute offset based on the db size

[Arvind Yadav]

This patch is to align the absolute doorbell offset
based on the doorbell's size. So that doorbell offset
will be aligned for both 32 bit and 64 bit.

v2:
- Addressed the review comment from Felix.
v3:
- Adding doorbell_size as parameter to get db absolute offset.

Cc: Christian Koenig <christian.koenig@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxx>
Signed-off-by: Arvind Yadav <Arvind.Yadav@xxxxxxx>
---
 .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c   |  6 +++++-
 drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c           | 13 +++++++++++--
 .../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c  |  4 +++-
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index 0d3d538b64eb..690ff131fe4b 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -346,6 +346,7 @@ static int allocate_doorbell(struct qcm_process_device *qpd,
 			     uint32_t const *restore_id)
 {
 	struct kfd_node *dev = qpd->dqm->dev;
+	uint32_t doorbell_size;
 
 	if (!KFD_IS_SOC15(dev)) {
 		/* On pre-SOC15 chips we need to use the queue ID to
@@ -405,9 +406,12 @@ static int allocate_doorbell(struct qcm_process_device *qpd,
 		}
 	}
 
+	doorbell_size = dev->kfd->device_info.doorbell_size;
+
 	q->properties.doorbell_off = amdgpu_doorbell_index_on_bar(dev->adev,
 								  qpd->proc_doorbells,
-								  q->doorbell_id);
+								  q->doorbell_id,
+								  doorbell_size);
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c
index 7b38537c7c99..59dd76c4b138 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c
@@ -161,7 +161,10 @@ void __iomem *kfd_get_kernel_doorbell(struct kfd_dev *kfd,
 	if (inx >= KFD_MAX_NUM_OF_QUEUES_PER_PROCESS)
 		return NULL;
 
-	*doorbell_off = amdgpu_doorbell_index_on_bar(kfd->adev, kfd->doorbells, inx);
+	*doorbell_off = amdgpu_doorbell_index_on_bar(kfd->adev,
+						     kfd->doorbells,
+						     inx,
+						     kfd->device_info.doorbell_size);
 	inx *= 2;
 
 	pr_debug("Get kernel queue doorbell\n"
@@ -233,6 +236,7 @@ phys_addr_t kfd_get_process_doorbells(struct kfd_process_device *pdd)
 {
 	struct amdgpu_device *adev = pdd->dev->adev;
 	uint32_t first_db_index;
+	uint32_t doorbell_size;
 
 	if (!pdd->qpd.proc_doorbells) {
 		if (kfd_alloc_process_doorbells(pdd->dev->kfd, pdd))
@@ -240,7 +244,12 @@ phys_addr_t kfd_get_process_doorbells(struct kfd_process_device *pdd)
 			return 0;
 	}
 
-	first_db_index = amdgpu_doorbell_index_on_bar(adev, pdd->qpd.proc_doorbells, 0);
+	doorbell_size = pdd->dev->kfd->device_info.doorbell_size;
+
+	first_db_index = amdgpu_doorbell_index_on_bar(adev,
+						      pdd->qpd.proc_doorbells,
+						      0,
+						      doorbell_size);
 	return adev->doorbell.base + first_db_index * sizeof(uint32_t);
 }
 
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
index adb5e4bdc0b2..010cd8e8e6a1 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -375,9 +375,11 @@ int pqm_create_queue(struct process_queue_manager *pqm,
 		 * relative doorbell index = Absolute doorbell index -
 		 * absolute index of first doorbell in the page.
 		 */
+		uint32_t doorbell_size = pdd->dev->kfd->device_info.doorbell_size;
 		uint32_t first_db_index = amdgpu_doorbell_index_on_bar(pdd->dev->adev,
 								       pdd->qpd.proc_doorbells,
-								       0);
+								       0,
+								       doorbell_size);
 
 		*p_doorbell_offset_in_process = (q->properties.doorbell_off
 						- first_db_index) * sizeof(uint32_t);
-- 
2.34.1