diff options
author | Felix Kuehling <Felix.Kuehling@amd.com> | 2018-04-10 17:33:05 -0400 |
---|---|---|
committer | Oded Gabbay <oded.gabbay@gmail.com> | 2018-04-10 17:33:05 -0400 |
commit | ef568db792e66216b48fd1567ff4a9d3bf9af866 (patch) | |
tree | d760838f9ee71765d151a5e3132cbc9d1c3d1139 /drivers/gpu/drm/amd/amdkfd/kfd_process.c | |
parent | df03ef9342ce09985210679a734f88a269c19ff5 (diff) |
drm/amdkfd: Implement doorbell allocation for SOC15
Allocate doorbells according to the doorbell routing information on
SOC15 ASICs (Vega10 and later). On older ASICs we continue to use the
queue_id as the doorbell ID to maintain compatibility with the Thunk.
Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_process.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_process.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index 131fe2a1b589..1d80b4f7c681 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -332,6 +332,7 @@ static void kfd_process_destroy_pdds(struct kfd_process *p) free_pages((unsigned long)pdd->qpd.cwsr_kaddr, get_order(KFD_CWSR_TBA_TMA_SIZE)); + kfree(pdd->qpd.doorbell_bitmap); idr_destroy(&pdd->alloc_idr); kfree(pdd); @@ -586,6 +587,31 @@ err_alloc_process: return ERR_PTR(err); } +static int init_doorbell_bitmap(struct qcm_process_device *qpd, + struct kfd_dev *dev) +{ + unsigned int i; + + if (!KFD_IS_SOC15(dev->device_info->asic_family)) + return 0; + + qpd->doorbell_bitmap = + kzalloc(DIV_ROUND_UP(KFD_MAX_NUM_OF_QUEUES_PER_PROCESS, + BITS_PER_BYTE), GFP_KERNEL); + if (!qpd->doorbell_bitmap) + return -ENOMEM; + + /* Mask out any reserved doorbells */ + for (i = 0; i < KFD_MAX_NUM_OF_QUEUES_PER_PROCESS; i++) + if ((dev->shared_resources.reserved_doorbell_mask & i) == + dev->shared_resources.reserved_doorbell_val) { + set_bit(i, qpd->doorbell_bitmap); + pr_debug("reserved doorbell 0x%03x\n", i); + } + + return 0; +} + struct kfd_process_device *kfd_get_process_device_data(struct kfd_dev *dev, struct kfd_process *p) { @@ -607,6 +633,12 @@ struct kfd_process_device *kfd_create_process_device_data(struct kfd_dev *dev, if (!pdd) return NULL; + if (init_doorbell_bitmap(&pdd->qpd, dev)) { + pr_err("Failed to init doorbell for process\n"); + kfree(pdd); + return NULL; + } + pdd->dev = dev; INIT_LIST_HEAD(&pdd->qpd.queues_list); INIT_LIST_HEAD(&pdd->qpd.priv_queue_list); |