diff options
| -rw-r--r-- | Documentation/gpu/driver-uapi.rst | 8 | ||||
| -rw-r--r-- | include/uapi/drm/nouveau_drm.h | 217 |
2 files changed, 225 insertions, 0 deletions
diff --git a/Documentation/gpu/driver-uapi.rst b/Documentation/gpu/driver-uapi.rst index 4411e6919a3d..9c7ca6e33a68 100644 --- a/Documentation/gpu/driver-uapi.rst +++ b/Documentation/gpu/driver-uapi.rst @@ -6,3 +6,11 @@ drm/i915 uAPI ============= .. kernel-doc:: include/uapi/drm/i915_drm.h + +drm/nouveau uAPI +================ + +VM_BIND / EXEC uAPI +------------------- + +.. kernel-doc:: include/uapi/drm/nouveau_drm.h diff --git a/include/uapi/drm/nouveau_drm.h b/include/uapi/drm/nouveau_drm.h index ca917e55b38f..b1ad9d5ffce8 100644 --- a/include/uapi/drm/nouveau_drm.h +++ b/include/uapi/drm/nouveau_drm.h @@ -76,6 +76,8 @@ struct drm_nouveau_channel_free { #define NOUVEAU_GEM_DOMAIN_GART (1 << 2) #define NOUVEAU_GEM_DOMAIN_MAPPABLE (1 << 3) #define NOUVEAU_GEM_DOMAIN_COHERENT (1 << 4) +/* The BO will never be shared via import or export. */ +#define NOUVEAU_GEM_DOMAIN_NO_SHARE (1 << 5) #define NOUVEAU_GEM_TILE_COMP 0x00030000 /* nv50-only */ #define NOUVEAU_GEM_TILE_LAYOUT_MASK 0x0000ff00 @@ -164,6 +166,215 @@ struct drm_nouveau_gem_cpu_fini { __u32 handle; }; +/** + * struct drm_nouveau_sync - sync object + * + * This structure serves as synchronization mechanism for (potentially) + * asynchronous operations such as EXEC or VM_BIND. + */ +struct drm_nouveau_sync { + /** + * @flags: the flags for a sync object + * + * The first 8 bits are used to determine the type of the sync object. + */ + __u32 flags; +#define DRM_NOUVEAU_SYNC_SYNCOBJ 0x0 +#define DRM_NOUVEAU_SYNC_TIMELINE_SYNCOBJ 0x1 +#define DRM_NOUVEAU_SYNC_TYPE_MASK 0xf + /** + * @handle: the handle of the sync object + */ + __u32 handle; + /** + * @timeline_value: + * + * The timeline point of the sync object in case the syncobj is of + * type DRM_NOUVEAU_SYNC_TIMELINE_SYNCOBJ. + */ + __u64 timeline_value; +}; + +/** + * struct drm_nouveau_vm_init - GPU VA space init structure + * + * Used to initialize the GPU's VA space for a user client, telling the kernel + * which portion of the VA space is managed by the UMD and kernel respectively. + * + * For the UMD to use the VM_BIND uAPI, this must be called before any BOs or + * channels are created; if called afterwards DRM_IOCTL_NOUVEAU_VM_INIT fails + * with -ENOSYS. + */ +struct drm_nouveau_vm_init { + /** + * @kernel_managed_addr: start address of the kernel managed VA space + * region + */ + __u64 kernel_managed_addr; + /** + * @kernel_managed_size: size of the kernel managed VA space region in + * bytes + */ + __u64 kernel_managed_size; +}; + +/** + * struct drm_nouveau_vm_bind_op - VM_BIND operation + * + * This structure represents a single VM_BIND operation. UMDs should pass + * an array of this structure via struct drm_nouveau_vm_bind's &op_ptr field. + */ +struct drm_nouveau_vm_bind_op { + /** + * @op: the operation type + */ + __u32 op; +/** + * @DRM_NOUVEAU_VM_BIND_OP_MAP: + * + * Map a GEM object to the GPU's VA space. Optionally, the + * &DRM_NOUVEAU_VM_BIND_SPARSE flag can be passed to instruct the kernel to + * create sparse mappings for the given range. + */ +#define DRM_NOUVEAU_VM_BIND_OP_MAP 0x0 +/** + * @DRM_NOUVEAU_VM_BIND_OP_UNMAP: + * + * Unmap an existing mapping in the GPU's VA space. If the region the mapping + * is located in is a sparse region, new sparse mappings are created where the + * unmapped (memory backed) mapping was mapped previously. To remove a sparse + * region the &DRM_NOUVEAU_VM_BIND_SPARSE must be set. + */ +#define DRM_NOUVEAU_VM_BIND_OP_UNMAP 0x1 + /** + * @flags: the flags for a &drm_nouveau_vm_bind_op + */ + __u32 flags; +/** + * @DRM_NOUVEAU_VM_BIND_SPARSE: + * + * Indicates that an allocated VA space region should be sparse. + */ +#define DRM_NOUVEAU_VM_BIND_SPARSE (1 << 8) + /** + * @handle: the handle of the DRM GEM object to map + */ + __u32 handle; + /** + * @pad: 32 bit padding, should be 0 + */ + __u32 pad; + /** + * @addr: + * + * the address the VA space region or (memory backed) mapping should be mapped to + */ + __u64 addr; + /** + * @bo_offset: the offset within the BO backing the mapping + */ + __u64 bo_offset; + /** + * @range: the size of the requested mapping in bytes + */ + __u64 range; +}; + +/** + * struct drm_nouveau_vm_bind - structure for DRM_IOCTL_NOUVEAU_VM_BIND + */ +struct drm_nouveau_vm_bind { + /** + * @op_count: the number of &drm_nouveau_vm_bind_op + */ + __u32 op_count; + /** + * @flags: the flags for a &drm_nouveau_vm_bind ioctl + */ + __u32 flags; +/** + * @DRM_NOUVEAU_VM_BIND_RUN_ASYNC: + * + * Indicates that the given VM_BIND operation should be executed asynchronously + * by the kernel. + * + * If this flag is not supplied the kernel executes the associated operations + * synchronously and doesn't accept any &drm_nouveau_sync objects. + */ +#define DRM_NOUVEAU_VM_BIND_RUN_ASYNC 0x1 + /** + * @wait_count: the number of wait &drm_nouveau_syncs + */ + __u32 wait_count; + /** + * @sig_count: the number of &drm_nouveau_syncs to signal when finished + */ + __u32 sig_count; + /** + * @wait_ptr: pointer to &drm_nouveau_syncs to wait for + */ + __u64 wait_ptr; + /** + * @sig_ptr: pointer to &drm_nouveau_syncs to signal when finished + */ + __u64 sig_ptr; + /** + * @op_ptr: pointer to the &drm_nouveau_vm_bind_ops to execute + */ + __u64 op_ptr; +}; + +/** + * struct drm_nouveau_exec_push - EXEC push operation + * + * This structure represents a single EXEC push operation. UMDs should pass an + * array of this structure via struct drm_nouveau_exec's &push_ptr field. + */ +struct drm_nouveau_exec_push { + /** + * @va: the virtual address of the push buffer mapping + */ + __u64 va; + /** + * @va_len: the length of the push buffer mapping + */ + __u64 va_len; +}; + +/** + * struct drm_nouveau_exec - structure for DRM_IOCTL_NOUVEAU_EXEC + */ +struct drm_nouveau_exec { + /** + * @channel: the channel to execute the push buffer in + */ + __u32 channel; + /** + * @push_count: the number of &drm_nouveau_exec_push ops + */ + __u32 push_count; + /** + * @wait_count: the number of wait &drm_nouveau_syncs + */ + __u32 wait_count; + /** + * @sig_count: the number of &drm_nouveau_syncs to signal when finished + */ + __u32 sig_count; + /** + * @wait_ptr: pointer to &drm_nouveau_syncs to wait for + */ + __u64 wait_ptr; + /** + * @sig_ptr: pointer to &drm_nouveau_syncs to signal when finished + */ + __u64 sig_ptr; + /** + * @push_ptr: pointer to &drm_nouveau_exec_push ops + */ + __u64 push_ptr; +}; + #define DRM_NOUVEAU_GETPARAM 0x00 #define DRM_NOUVEAU_SETPARAM 0x01 /* deprecated */ #define DRM_NOUVEAU_CHANNEL_ALLOC 0x02 @@ -174,6 +385,9 @@ struct drm_nouveau_gem_cpu_fini { #define DRM_NOUVEAU_NVIF 0x07 #define DRM_NOUVEAU_SVM_INIT 0x08 #define DRM_NOUVEAU_SVM_BIND 0x09 +#define DRM_NOUVEAU_VM_INIT 0x10 +#define DRM_NOUVEAU_VM_BIND 0x11 +#define DRM_NOUVEAU_EXEC 0x12 #define DRM_NOUVEAU_GEM_NEW 0x40 #define DRM_NOUVEAU_GEM_PUSHBUF 0x41 #define DRM_NOUVEAU_GEM_CPU_PREP 0x42 @@ -239,6 +453,9 @@ struct drm_nouveau_svm_bind { #define DRM_IOCTL_NOUVEAU_GEM_CPU_FINI DRM_IOW (DRM_COMMAND_BASE + DRM_NOUVEAU_GEM_CPU_FINI, struct drm_nouveau_gem_cpu_fini) #define DRM_IOCTL_NOUVEAU_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_NOUVEAU_GEM_INFO, struct drm_nouveau_gem_info) +#define DRM_IOCTL_NOUVEAU_VM_INIT DRM_IOWR(DRM_COMMAND_BASE + DRM_NOUVEAU_VM_INIT, struct drm_nouveau_vm_init) +#define DRM_IOCTL_NOUVEAU_VM_BIND DRM_IOWR(DRM_COMMAND_BASE + DRM_NOUVEAU_VM_BIND, struct drm_nouveau_vm_bind) +#define DRM_IOCTL_NOUVEAU_EXEC DRM_IOWR(DRM_COMMAND_BASE + DRM_NOUVEAU_EXEC, struct drm_nouveau_exec) #if defined(__cplusplus) } #endif |