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 | 33 ++++++++++++-------
.../drm/amd/amdkfd/kfd_device_queue_manager.h | 3 +-
drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 2 ++
3 files changed, 25 insertions(+), 13 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..92fede18bf1d 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 allocated_vmid = -1, i;
- if (dqm->vmid_bitmap == 0)
- return -ENOMEM;
+ for (i = dqm->dev->vm_info.first_vmid_kfd;
+ i <= dqm->dev->vm_info.last_vmid_kfd; i++) {
+ if (!dqm->vmid_pasid[i]) {
+ allocated_vmid = i;
+ break;
+ }
+ }
+
+ if (allocated_vmid < 0) {
+ pr_err("no more vmid to allocate\n");
+ return -ENOSPC;
+ }
+
+ pr_debug("vmid allocated: %d\n", allocated_vmid);
+
+ dqm->vmid_pasid[allocated_vmid] = q->process->pasid;
- bit = ffs(dqm->vmid_bitmap) - 1;
- dqm->vmid_bitmap &= ~(1 << bit);
+ 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()
@@ -278,8 +288,6 @@ 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;
-
/* On GFX v7, CP doesn't flush TC at dequeue */
if (q->device->device_info->asic_family == CHIP_HAWAII)
if (flush_texture_cache_nocpsch(q->device, qpd))
@@ -289,8 +297,8 @@ static void deallocate_vmid(struct device_queue_manager
*dqm,
/* Release the vmid mapping */
set_pasid_vmid_mapping(dqm, 0, qpd->vmid);
+ dqm->vmid_pasid[qpd->vmid] = 0;
- dqm->vmid_bitmap |= (1 << bit);
qpd->vmid = 0;
q->properties.vmid = 0;
}
@@ -1017,7 +1025,8 @@ 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;
+ memset(dqm->vmid_pasid, 0, VMID_NUM * sizeof(uint16_t));
+
dqm->sdma_bitmap = ~0ULL >> (64 - get_num_sdma_queues(dqm));
dqm->xgmi_sdma_bitmap = ~0ULL >> (64 - get_num_xgmi_sdma_queues(dqm));
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..99c8b36301ef 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[VMID_NUM];
uint64_t pipelines_addr;
struct kfd_mem_obj *pipeline_mem;
uint64_t fence_gpu_addr;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index 0d2c7fa1fa46..a08015720841 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -43,6 +43,8 @@
#include "amd_shared.h"
+#define VMID_NUM 16
+
#define KFD_MAX_RING_ENTRY_SIZE 8
#define KFD_SYSFS_FILE_MODE 0444
--
2.17.1
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