[v4,1/1] drm/amdkfd: get doorbell's absolute offset based on the db_size
Commit Message
Here, Adding db_size in byte to find the doorbell's
absolute offset for both 32-bit and 64-bit doorbell sizes.
So that doorbell offset will be aligned based on the doorbell
size.
v2:
- Addressed the review comment from Felix.
v3:
- Adding doorbell_size as parameter to get db absolute offset.
v4:
Squash the two patches into one.
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/amdgpu/amdgpu_doorbell.h | 5 +++--
drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c | 13 +++++++++----
.../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 3 ++-
drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c | 10 ++++++++--
.../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 3 ++-
5 files changed, 24 insertions(+), 10 deletions(-)
Comments
On 2023-10-05 13:20, Arvind Yadav wrote:
> Here, Adding db_size in byte to find the doorbell's
> absolute offset for both 32-bit and 64-bit doorbell sizes.
> So that doorbell offset will be aligned based on the doorbell
> size.
>
> v2:
> - Addressed the review comment from Felix.
> v3:
> - Adding doorbell_size as parameter to get db absolute offset.
> v4:
> Squash the two patches into one.
>
> 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>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h | 5 +++--
> drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c | 13 +++++++++----
> .../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 3 ++-
> drivers/gpu/drm/amd/amdkfd/kfd_doorbell.c | 10 ++++++++--
> .../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 3 ++-
> 5 files changed, 24 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h
> index 09f6727e7c73..4a8b33f55f6b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell.h
> @@ -357,8 +357,9 @@ int amdgpu_doorbell_init(struct amdgpu_device *adev);
> void amdgpu_doorbell_fini(struct amdgpu_device *adev);
> int amdgpu_doorbell_create_kernel_doorbells(struct amdgpu_device *adev);
> uint32_t amdgpu_doorbell_index_on_bar(struct amdgpu_device *adev,
> - struct amdgpu_bo *db_bo,
> - uint32_t doorbell_index);
> + struct amdgpu_bo *db_bo,
> + uint32_t doorbell_index,
> + uint32_t db_size);
>
> #define RDOORBELL32(index) amdgpu_mm_rdoorbell(adev, (index))
> #define WDOORBELL32(index, v) amdgpu_mm_wdoorbell(adev, (index), (v))
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
> index da4be0bbb446..6690f5a72f4d 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_doorbell_mgr.c
> @@ -114,19 +114,24 @@ void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v)
> * @adev: amdgpu_device pointer
> * @db_bo: doorbell object's bo
> * @db_index: doorbell relative index in this doorbell object
> + * @db_size: doorbell size is in byte
> *
> * returns doorbell's absolute index in BAR
> */
> uint32_t amdgpu_doorbell_index_on_bar(struct amdgpu_device *adev,
> - struct amdgpu_bo *db_bo,
> - uint32_t doorbell_index)
> + struct amdgpu_bo *db_bo,
> + uint32_t doorbell_index,
> + uint32_t db_size)
> {
> int db_bo_offset;
>
> db_bo_offset = amdgpu_bo_gpu_offset_no_check(db_bo);
>
> - /* doorbell index is 32 bit but doorbell's size is 64-bit, so *2 */
> - return db_bo_offset / sizeof(u32) + doorbell_index * 2;
> + /* doorbell index is 32 bit but doorbell's size can be 32 bit
> + * or 64 bit, so *db_size(in byte)/4 for alignment.
> + */
> + return db_bo_offset / sizeof(u32) + doorbell_index *
> + DIV_ROUND_UP(db_size, 4);
> }
>
> /**
> 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..e07652e72496 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 +407,8 @@ 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);
> + q->doorbell_id,
> + dev->kfd->device_info.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..05c74887fd6f 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"
> @@ -240,7 +243,10 @@ 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);
> + first_db_index = amdgpu_doorbell_index_on_bar(adev,
> + pdd->qpd.proc_doorbells,
> + 0,
> + pdd->dev->kfd->device_info.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..77649392e233 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
> @@ -377,7 +377,8 @@ int pqm_create_queue(struct process_queue_manager *pqm,
> */
> uint32_t first_db_index = amdgpu_doorbell_index_on_bar(pdd->dev->adev,
> pdd->qpd.proc_doorbells,
> - 0);
> + 0,
> + pdd->dev->kfd->device_info.doorbell_size);
>
> *p_doorbell_offset_in_process = (q->properties.doorbell_off
> - first_db_index) * sizeof(uint32_t);
@@ -357,8 +357,9 @@ int amdgpu_doorbell_init(struct amdgpu_device *adev);
void amdgpu_doorbell_fini(struct amdgpu_device *adev);
int amdgpu_doorbell_create_kernel_doorbells(struct amdgpu_device *adev);
uint32_t amdgpu_doorbell_index_on_bar(struct amdgpu_device *adev,
- struct amdgpu_bo *db_bo,
- uint32_t doorbell_index);
+ struct amdgpu_bo *db_bo,
+ uint32_t doorbell_index,
+ uint32_t db_size);
#define RDOORBELL32(index) amdgpu_mm_rdoorbell(adev, (index))
#define WDOORBELL32(index, v) amdgpu_mm_wdoorbell(adev, (index), (v))
@@ -114,19 +114,24 @@ void amdgpu_mm_wdoorbell64(struct amdgpu_device *adev, u32 index, u64 v)
* @adev: amdgpu_device pointer
* @db_bo: doorbell object's bo
* @db_index: doorbell relative index in this doorbell object
+ * @db_size: doorbell size is in byte
*
* returns doorbell's absolute index in BAR
*/
uint32_t amdgpu_doorbell_index_on_bar(struct amdgpu_device *adev,
- struct amdgpu_bo *db_bo,
- uint32_t doorbell_index)
+ struct amdgpu_bo *db_bo,
+ uint32_t doorbell_index,
+ uint32_t db_size)
{
int db_bo_offset;
db_bo_offset = amdgpu_bo_gpu_offset_no_check(db_bo);
- /* doorbell index is 32 bit but doorbell's size is 64-bit, so *2 */
- return db_bo_offset / sizeof(u32) + doorbell_index * 2;
+ /* doorbell index is 32 bit but doorbell's size can be 32 bit
+ * or 64 bit, so *db_size(in byte)/4 for alignment.
+ */
+ return db_bo_offset / sizeof(u32) + doorbell_index *
+ DIV_ROUND_UP(db_size, 4);
}
/**
@@ -407,7 +407,8 @@ 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);
+ q->doorbell_id,
+ dev->kfd->device_info.doorbell_size);
return 0;
}
@@ -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"
@@ -240,7 +243,10 @@ 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);
+ first_db_index = amdgpu_doorbell_index_on_bar(adev,
+ pdd->qpd.proc_doorbells,
+ 0,
+ pdd->dev->kfd->device_info.doorbell_size);
return adev->doorbell.base + first_db_index * sizeof(uint32_t);
}
@@ -377,7 +377,8 @@ int pqm_create_queue(struct process_queue_manager *pqm,
*/
uint32_t first_db_index = amdgpu_doorbell_index_on_bar(pdd->dev->adev,
pdd->qpd.proc_doorbells,
- 0);
+ 0,
+ pdd->dev->kfd->device_info.doorbell_size);
*p_doorbell_offset_in_process = (q->properties.doorbell_off
- first_db_index) * sizeof(uint32_t);