diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_svm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index d34508f5e88b..64cd7712c098 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -3481,6 +3481,65 @@ fill_values: return 0; } +int svm_range_get_info(struct kfd_process *p, uint32_t *num_svm_ranges, + uint64_t *svm_priv_data_size) +{ + uint64_t total_size, accessibility_size, common_attr_size; + int nattr_common = 4, nattr_accessibility = 1; + int num_devices = p->n_pdds; + struct svm_range_list *svms; + struct svm_range *prange; + uint32_t count = 0; + + *svm_priv_data_size = 0; + + svms = &p->svms; + if (!svms) + return -EINVAL; + + mutex_lock(&svms->lock); + list_for_each_entry(prange, &svms->list, list) { + pr_debug("prange: 0x%p start: 0x%lx\t npages: 0x%llx\t end: 0x%llx\n", + prange, prange->start, prange->npages, + prange->start + prange->npages - 1); + count++; + } + mutex_unlock(&svms->lock); + + *num_svm_ranges = count; + /* Only the accessbility attributes need to be queried for all the gpus + * individually, remaining ones are spanned across the entire process + * regardless of the various gpu nodes. Of the remaining attributes, + * KFD_IOCTL_SVM_ATTR_CLR_FLAGS need not be saved. + * + * KFD_IOCTL_SVM_ATTR_PREFERRED_LOC + * KFD_IOCTL_SVM_ATTR_PREFETCH_LOC + * KFD_IOCTL_SVM_ATTR_SET_FLAGS + * KFD_IOCTL_SVM_ATTR_GRANULARITY + * + * ** ACCESSBILITY ATTRIBUTES ** + * (Considered as one, type is altered during query, value is gpuid) + * KFD_IOCTL_SVM_ATTR_ACCESS + * KFD_IOCTL_SVM_ATTR_ACCESS_IN_PLACE + * KFD_IOCTL_SVM_ATTR_NO_ACCESS + */ + if (*num_svm_ranges > 0) { + common_attr_size = sizeof(struct kfd_ioctl_svm_attribute) * + nattr_common; + accessibility_size = sizeof(struct kfd_ioctl_svm_attribute) * + nattr_accessibility * num_devices; + + total_size = sizeof(struct kfd_criu_svm_range_priv_data) + + common_attr_size + accessibility_size; + + *svm_priv_data_size = *num_svm_ranges * total_size; + } + + pr_debug("num_svm_ranges %u total_priv_size %llu\n", *num_svm_ranges, + *svm_priv_data_size); + return 0; +} + int svm_ioctl(struct kfd_process *p, enum kfd_ioctl_svm_op op, uint64_t start, uint64_t size, uint32_t nattrs, struct kfd_ioctl_svm_attribute *attrs) |