This makes possible the vmid pasid mapping query through software.
Change-Id: Ib539aae277a227cc39f6469ae23c46c4d289b87b
Signed-off-by: Yong Zhao <yong.z...@amd.com>
---
.../drm/amd/amdkfd/kfd_device_queue_manager.c | 34 +++++++++++++------
.../drm/amd/amdkfd/kfd_device_queue_manager.h | 3 +-
2 files changed, 26 insertions(+), 11 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 e7f0a32e0e44..d006adefef55 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -224,20 +224,30 @@ static int allocate_vmid(struct device_queue_manager *dqm,
struct qcm_process_device *qpd,
struct queue *q)
{
- int bit, allocated_vmid;
+ int idx = -1, allocated_vmid, i;
- if (dqm->vmid_bitmap == 0)
+ for (i = 0; i < dqm->dev->vm_info.vmid_num_kfd; i++) {
+ if (!dqm->vmid_pasid[i]) {
+ idx = i;
+ break;
+ }
+ }
+
+ if (idx < 0) {
+ pr_err("no more vmid to allocate\n");
return -ENOMEM;
+ }
+
+ dqm->vmid_pasid[idx] = q->process->pasid;
- bit = ffs(dqm->vmid_bitmap) - 1;
- dqm->vmid_bitmap &= ~(1 << bit);
+ allocated_vmid = idx + dqm->dev->vm_info.first_vmid_kfd;
+ pr_debug("vmid allocated: %d\n", allocated_vmid);
+
+ set_pasid_vmid_mapping(dqm, q->process->pasid, allocated_vmid);
- allocated_vmid = bit + dqm->dev->vm_info.first_vmid_kfd;
- pr_debug("vmid allocation %d\n", allocated_vmid);
qpd->vmid = allocated_vmid;
q->properties.vmid = allocated_vmid;
- set_pasid_vmid_mapping(dqm, q->process->pasid, q->properties.vmid);
program_sh_mem_settings(dqm, qpd);
/* qpd->page_table_base is set earlier when register_process()
@@ -278,7 +288,7 @@ static void deallocate_vmid(struct device_queue_manager
*dqm,
struct qcm_process_device *qpd,
struct queue *q)
{
- int bit = qpd->vmid - dqm->dev->vm_info.first_vmid_kfd;
+ int idx;
/* On GFX v7, CP doesn't flush TC at dequeue */
if (q->device->device_info->asic_family == CHIP_HAWAII)
@@ -290,7 +300,9 @@ static void deallocate_vmid(struct device_queue_manager
*dqm,
/* Release the vmid mapping */
set_pasid_vmid_mapping(dqm, 0, qpd->vmid);
- dqm->vmid_bitmap |= (1 << bit);
+ idx = qpd->vmid - dqm->dev->vm_info.first_vmid_kfd;
+ dqm->vmid_pasid[idx] = 0;
+
qpd->vmid = 0;
q->properties.vmid = 0;
}
@@ -1017,7 +1029,8 @@ static int initialize_nocpsch(struct device_queue_manager
*dqm)
dqm->allocated_queues[pipe] |= 1 << queue;
}
- dqm->vmid_bitmap = (1 << dqm->dev->vm_info.vmid_num_kfd) - 1;
+ dqm->vmid_pasid = kcalloc(dqm->dev->vm_info.vmid_num_kfd,
+ sizeof(uint16_t), GFP_KERNEL);
dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm));
dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm));
@@ -1030,6 +1043,7 @@ static void uninitialize(struct device_queue_manager *dqm)
WARN_ON(dqm->queue_count > 0 || dqm->processes_count > 0);
+ kfree(dqm->vmid_pasid);
kfree(dqm->allocated_queues);
for (i = 0 ; i < KFD_MQD_TYPE_MAX ; i++)
kfree(dqm->mqd_mgrs[i]);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
index eed8f950b663..67b5e5fadd95 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
@@ -188,7 +188,8 @@ struct device_queue_manager {
unsigned int *allocated_queues;
uint64_t sdma_bitmap;
uint64_t xgmi_sdma_bitmap;
- unsigned int vmid_bitmap;
+ /* the pasid mapping for each kfd vmid */
+ uint16_t *vmid_pasid;
uint64_t pipelines_addr;
struct kfd_mem_obj *pipeline_mem;
uint64_t fence_gpu_addr;
--
2.17.1
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