[PATCH v2 1/3] drm/amdkfd: Use drm_priv to pass VM from KFD to amdgpu
Felix Kuehling
Felix.Kuehling at amd.com
Thu Apr 15 02:40:11 UTC 2021
amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu needs the drm_priv to allow mmap
to access the BO through the corresponding file descriptor. The VM can
also be extracted from drm_priv, so drm_priv can replace the vm parameter
in the kfd2kgd interface.
Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 14 ++--
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 69 +++++++++++--------
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 8 +--
.../drm/amd/amdkfd/kfd_device_queue_manager.c | 6 +-
drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_process.c | 23 +++----
6 files changed, 67 insertions(+), 55 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index 5ffb07b02810..0d59bebd92af 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -236,20 +236,20 @@ uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct kgd_dev *dst, struct kgd_dev *s
/* GPUVM API */
int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
struct file *filp, u32 pasid,
- void **vm, void **process_info,
+ void **process_info,
struct dma_fence **ef);
-void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *vm);
-uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm);
+void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *drm_priv);
+uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *drm_priv);
int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
struct kgd_dev *kgd, uint64_t va, uint64_t size,
- void *vm, struct kgd_mem **mem,
+ void *drm_priv, struct kgd_mem **mem,
uint64_t *offset, uint32_t flags);
int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
struct kgd_dev *kgd, struct kgd_mem *mem, uint64_t *size);
int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
- struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
+ struct kgd_dev *kgd, struct kgd_mem *mem, void *drm_priv);
int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
- struct kgd_dev *kgd, struct kgd_mem *mem, void *vm);
+ struct kgd_dev *kgd, struct kgd_mem *mem, void *drm_priv);
int amdgpu_amdkfd_gpuvm_sync_memory(
struct kgd_dev *kgd, struct kgd_mem *mem, bool intr);
int amdgpu_amdkfd_gpuvm_map_gtt_bo_to_kernel(struct kgd_dev *kgd,
@@ -260,7 +260,7 @@ int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
struct kfd_vm_fault_info *info);
int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
struct dma_buf *dmabuf,
- uint64_t va, void *vm,
+ uint64_t va, void *drm_priv,
struct kgd_mem **mem, uint64_t *size,
uint64_t *mmap_offset);
int amdgpu_amdkfd_get_tile_config(struct kgd_dev *kgd,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 7d4118c8128a..dc86faa03b88 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -948,6 +948,13 @@ static int process_update_pds(struct amdkfd_process_info *process_info,
return 0;
}
+static struct amdgpu_vm *drm_priv_to_vm(struct drm_file *drm_priv)
+{
+ struct amdgpu_fpriv *fpriv = drm_priv->driver_priv;
+
+ return &fpriv->vm;
+}
+
static int init_kfd_vm(struct amdgpu_vm *vm, void **process_info,
struct dma_fence **ef)
{
@@ -1036,15 +1043,19 @@ static int init_kfd_vm(struct amdgpu_vm *vm, void **process_info,
int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
struct file *filp, u32 pasid,
- void **vm, void **process_info,
+ void **process_info,
struct dma_fence **ef)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
- struct drm_file *drm_priv = filp->private_data;
- struct amdgpu_fpriv *drv_priv = drm_priv->driver_priv;
- struct amdgpu_vm *avm = &drv_priv->vm;
+ struct amdgpu_fpriv *drv_priv;
+ struct amdgpu_vm *avm;
int ret;
+ ret = amdgpu_file_to_fpriv(filp, &drv_priv);
+ if (ret)
+ return ret;
+ avm = &drv_priv->vm;
+
/* Already a compute VM? */
if (avm->process_info)
return -EINVAL;
@@ -1059,7 +1070,7 @@ int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct kgd_dev *kgd,
if (ret)
return ret;
- *vm = (void *)avm;
+ amdgpu_vm_set_task_info(avm);
return 0;
}
@@ -1100,15 +1111,17 @@ void amdgpu_amdkfd_gpuvm_destroy_cb(struct amdgpu_device *adev,
}
}
-void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *vm)
+void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *drm_priv)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
- struct amdgpu_vm *avm = (struct amdgpu_vm *)vm;
+ struct amdgpu_vm *avm;
- if (WARN_ON(!kgd || !vm))
+ if (WARN_ON(!kgd || !drm_priv))
return;
- pr_debug("Releasing process vm %p\n", vm);
+ avm = drm_priv_to_vm(drm_priv);
+
+ pr_debug("Releasing process vm %p\n", avm);
/* The original pasid of amdgpu vm has already been
* released during making a amdgpu vm to a compute vm
@@ -1119,9 +1132,9 @@ void amdgpu_amdkfd_gpuvm_release_process_vm(struct kgd_dev *kgd, void *vm)
amdgpu_vm_release_compute(adev, avm);
}
-uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm)
+uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *drm_priv)
{
- struct amdgpu_vm *avm = (struct amdgpu_vm *)vm;
+ struct amdgpu_vm *avm = drm_priv_to_vm(drm_priv);
struct amdgpu_bo *pd = avm->root.base.bo;
struct amdgpu_device *adev = amdgpu_ttm_adev(pd->tbo.bdev);
@@ -1132,11 +1145,11 @@ uint64_t amdgpu_amdkfd_gpuvm_get_process_page_dir(void *vm)
int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
struct kgd_dev *kgd, uint64_t va, uint64_t size,
- void *vm, struct kgd_mem **mem,
+ void *drm_priv, struct kgd_mem **mem,
uint64_t *offset, uint32_t flags)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
- struct amdgpu_vm *avm = (struct amdgpu_vm *)vm;
+ struct amdgpu_vm *avm = drm_priv_to_vm(drm_priv);
enum ttm_bo_type bo_type = ttm_bo_type_device;
struct sg_table *sg = NULL;
uint64_t user_addr = 0;
@@ -1347,10 +1360,10 @@ int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
}
int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
- struct kgd_dev *kgd, struct kgd_mem *mem, void *vm)
+ struct kgd_dev *kgd, struct kgd_mem *mem, void *drm_priv)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
- struct amdgpu_vm *avm = (struct amdgpu_vm *)vm;
+ struct amdgpu_vm *avm = drm_priv_to_vm(drm_priv);
int ret;
struct amdgpu_bo *bo;
uint32_t domain;
@@ -1391,9 +1404,9 @@ int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
pr_debug("Map VA 0x%llx - 0x%llx to vm %p domain %s\n",
mem->va,
mem->va + bo_size * (1 + mem->aql_queue),
- vm, domain_string(domain));
+ avm, domain_string(domain));
- ret = reserve_bo_and_vm(mem, vm, &ctx);
+ ret = reserve_bo_and_vm(mem, avm, &ctx);
if (unlikely(ret))
goto out;
@@ -1437,7 +1450,7 @@ int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
}
list_for_each_entry(entry, &mem->bo_va_list, bo_list) {
- if (entry->bo_va->base.vm == vm && !entry->is_mapped) {
+ if (entry->bo_va->base.vm == avm && !entry->is_mapped) {
pr_debug("\t map VA 0x%llx - 0x%llx in entry %p\n",
entry->va, entry->va + bo_size,
entry);
@@ -1449,7 +1462,7 @@ int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
goto map_bo_to_gpuvm_failed;
}
- ret = vm_update_pds(vm, ctx.sync);
+ ret = vm_update_pds(avm, ctx.sync);
if (ret) {
pr_err("Failed to update page directories\n");
goto map_bo_to_gpuvm_failed;
@@ -1485,11 +1498,11 @@ int amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
}
int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
- struct kgd_dev *kgd, struct kgd_mem *mem, void *vm)
+ struct kgd_dev *kgd, struct kgd_mem *mem, void *drm_priv)
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
- struct amdkfd_process_info *process_info =
- ((struct amdgpu_vm *)vm)->process_info;
+ struct amdgpu_vm *avm = drm_priv_to_vm(drm_priv);
+ struct amdkfd_process_info *process_info = avm->process_info;
unsigned long bo_size = mem->bo->tbo.base.size;
struct kfd_bo_va_list *entry;
struct bo_vm_reservation_context ctx;
@@ -1497,7 +1510,7 @@ int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
mutex_lock(&mem->lock);
- ret = reserve_bo_and_cond_vms(mem, vm, BO_VM_MAPPED, &ctx);
+ ret = reserve_bo_and_cond_vms(mem, avm, BO_VM_MAPPED, &ctx);
if (unlikely(ret))
goto out;
/* If no VMs were reserved, it means the BO wasn't actually mapped */
@@ -1506,17 +1519,17 @@ int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
goto unreserve_out;
}
- ret = vm_validate_pt_pd_bos((struct amdgpu_vm *)vm);
+ ret = vm_validate_pt_pd_bos(avm);
if (unlikely(ret))
goto unreserve_out;
pr_debug("Unmap VA 0x%llx - 0x%llx from vm %p\n",
mem->va,
mem->va + bo_size * (1 + mem->aql_queue),
- vm);
+ avm);
list_for_each_entry(entry, &mem->bo_va_list, bo_list) {
- if (entry->bo_va->base.vm == vm && entry->is_mapped) {
+ if (entry->bo_va->base.vm == avm && entry->is_mapped) {
pr_debug("\t unmap VA 0x%llx - 0x%llx from entry %p\n",
entry->va,
entry->va + bo_size,
@@ -1642,14 +1655,14 @@ int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
struct dma_buf *dma_buf,
- uint64_t va, void *vm,
+ uint64_t va, void *drm_priv,
struct kgd_mem **mem, uint64_t *size,
uint64_t *mmap_offset)
{
struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
+ struct amdgpu_vm *avm = drm_priv_to_vm(drm_priv);
struct drm_gem_object *obj;
struct amdgpu_bo *bo;
- struct amdgpu_vm *avm = (struct amdgpu_vm *)vm;
if (dma_buf->ops != &amdgpu_dmabuf_ops)
/* Can't handle non-graphics buffers */
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 43de260b2230..97da1632f504 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1297,7 +1297,7 @@ static int kfd_ioctl_alloc_memory_of_gpu(struct file *filep,
err = amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
dev->kgd, args->va_addr, args->size,
- pdd->vm, (struct kgd_mem **) &mem, &offset,
+ pdd->drm_priv, (struct kgd_mem **) &mem, &offset,
flags);
if (err)
@@ -1448,7 +1448,7 @@ static int kfd_ioctl_map_memory_to_gpu(struct file *filep,
goto get_mem_obj_from_handle_failed;
}
err = amdgpu_amdkfd_gpuvm_map_memory_to_gpu(
- peer->kgd, (struct kgd_mem *)mem, peer_pdd->vm);
+ peer->kgd, (struct kgd_mem *)mem, peer_pdd->drm_priv);
if (err) {
pr_err("Failed to map to gpu %d/%d\n",
i, args->n_devices);
@@ -1555,7 +1555,7 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
goto get_mem_obj_from_handle_failed;
}
err = amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
- peer->kgd, (struct kgd_mem *)mem, peer_pdd->vm);
+ peer->kgd, (struct kgd_mem *)mem, peer_pdd->drm_priv);
if (err) {
pr_err("Failed to unmap from gpu %d/%d\n",
i, args->n_devices);
@@ -1701,7 +1701,7 @@ static int kfd_ioctl_import_dmabuf(struct file *filep,
}
r = amdgpu_amdkfd_gpuvm_import_dmabuf(dev->kgd, dmabuf,
- args->va_addr, pdd->vm,
+ args->va_addr, pdd->drm_priv,
(struct kgd_mem **)&mem, &size,
NULL);
if (r)
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 d3eaa1549bd7..98c2046c7331 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -738,7 +738,7 @@ static int restore_process_queues_nocpsch(struct device_queue_manager *dqm,
pdd = qpd_to_pdd(qpd);
/* Retrieve PD base */
- pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm);
+ pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv);
dqm_lock(dqm);
if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
@@ -821,7 +821,7 @@ static int restore_process_queues_cpsch(struct device_queue_manager *dqm,
pdd = qpd_to_pdd(qpd);
/* Retrieve PD base */
- pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm);
+ pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv);
dqm_lock(dqm);
if (WARN_ON_ONCE(!qpd->evicted)) /* already restored, do nothing */
@@ -873,7 +873,7 @@ static int register_process(struct device_queue_manager *dqm,
pdd = qpd_to_pdd(qpd);
/* Retrieve PD base */
- pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->vm);
+ pd_base = amdgpu_amdkfd_gpuvm_get_process_page_dir(pdd->drm_priv);
dqm_lock(dqm);
list_add(&n->list, &dqm->queues);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index 0b6595f7acda..c6357ceb247d 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -669,7 +669,7 @@ struct kfd_process_device {
/* VM context for GPUVM allocations */
struct file *drm_file;
- void *vm;
+ void *drm_priv;
/* GPUVM allocations storage */
struct idr alloc_idr;
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index d97e330a5022..209e9edd6ddd 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -647,7 +647,7 @@ static void kfd_process_free_gpuvm(struct kgd_mem *mem,
{
struct kfd_dev *dev = pdd->dev;
- amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(dev->kgd, mem, pdd->vm);
+ amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(dev->kgd, mem, pdd->drm_priv);
amdgpu_amdkfd_gpuvm_free_memory_of_gpu(dev->kgd, mem, NULL);
}
@@ -667,11 +667,11 @@ static int kfd_process_alloc_gpuvm(struct kfd_process_device *pdd,
int err;
err = amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(kdev->kgd, gpu_va, size,
- pdd->vm, &mem, NULL, flags);
+ pdd->drm_priv, &mem, NULL, flags);
if (err)
goto err_alloc_mem;
- err = amdgpu_amdkfd_gpuvm_map_memory_to_gpu(kdev->kgd, mem, pdd->vm);
+ err = amdgpu_amdkfd_gpuvm_map_memory_to_gpu(kdev->kgd, mem, pdd->drm_priv);
if (err)
goto err_map_mem;
@@ -901,10 +901,10 @@ static void kfd_process_device_free_bos(struct kfd_process_device *pdd)
for (i = 0; i < p->n_pdds; i++) {
struct kfd_process_device *peer_pdd = p->pdds[i];
- if (!peer_pdd->vm)
+ if (!peer_pdd->drm_priv)
continue;
amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu(
- peer_pdd->dev->kgd, mem, peer_pdd->vm);
+ peer_pdd->dev->kgd, mem, peer_pdd->drm_priv);
}
amdgpu_amdkfd_gpuvm_free_memory_of_gpu(pdd->dev->kgd, mem, NULL);
@@ -932,7 +932,7 @@ static void kfd_process_destroy_pdds(struct kfd_process *p)
if (pdd->drm_file) {
amdgpu_amdkfd_gpuvm_release_process_vm(
- pdd->dev->kgd, pdd->vm);
+ pdd->dev->kgd, pdd->drm_priv);
fput(pdd->drm_file);
}
@@ -1375,7 +1375,7 @@ int kfd_process_device_init_vm(struct kfd_process_device *pdd,
if (!drm_file)
return -EINVAL;
- if (pdd->vm)
+ if (pdd->drm_priv)
return -EBUSY;
p = pdd->process;
@@ -1383,13 +1383,12 @@ int kfd_process_device_init_vm(struct kfd_process_device *pdd,
ret = amdgpu_amdkfd_gpuvm_acquire_process_vm(
dev->kgd, drm_file, p->pasid,
- &pdd->vm, &p->kgd_process_info, &p->ef);
+ &p->kgd_process_info, &p->ef);
if (ret) {
pr_err("Failed to create process VM object\n");
return ret;
}
-
- amdgpu_vm_set_task_info(pdd->vm);
+ pdd->drm_priv = drm_file->private_data;
ret = kfd_process_device_reserve_ib_mem(pdd);
if (ret)
@@ -1405,7 +1404,7 @@ int kfd_process_device_init_vm(struct kfd_process_device *pdd,
err_init_cwsr:
err_reserve_ib_mem:
kfd_process_device_free_bos(pdd);
- pdd->vm = NULL;
+ pdd->drm_priv = NULL;
return ret;
}
@@ -1429,7 +1428,7 @@ struct kfd_process_device *kfd_bind_process_to_device(struct kfd_dev *dev,
return ERR_PTR(-ENOMEM);
}
- if (!pdd->vm)
+ if (!pdd->drm_priv)
return ERR_PTR(-ENODEV);
/*
--
2.31.1
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