lkml.org 
[lkml]   [2023]   [Sep]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/1] drm/amdkfd: Fix unaligned doorbell absolute offset for gfx8
Date
This patch is to adjust the absolute doorbell offset
against the doorbell id considering the doorbell
size of 32/64 bit.

Cc: Christian Koenig <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Shashank Sharma <shashank.sharma@amd.com>
Signed-off-by: Arvind Yadav <Arvind.Yadav@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

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..c327f7f604d7 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -407,7 +407,16 @@ static int allocate_doorbell(struct qcm_process_device *qpd,

q->properties.doorbell_off = amdgpu_doorbell_index_on_bar(dev->adev,
qpd->proc_doorbells,
- q->doorbell_id);
+ 0);
+
+ /* Adjust the absolute doorbell offset against the doorbell id considering
+ * the doorbell size of 32/64 bit.
+ */
+ if (!KFD_IS_SOC15(dev))
+ q->properties.doorbell_off += q->doorbell_id;
+ else
+ q->properties.doorbell_off += q->doorbell_id * 2;
+
return 0;
}

--
2.34.1
\
 
 \ /
  Last update: 2023-09-27 18:53    [W:0.067 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site