# gizhw:drm

The DRM requests every DRM-based accelerator of the accel class answers (drm/drm.h): the version request, which names the driver bound to a node, and the wait on a timeline syncobj. A request is an ioctl on a Handle of gizhw:device; the layouts are the kernel's.

```gizlang
import * as Drm from "gizhw:drm";
```

## Types

### `Driver`

```gizlang
type Driver = { name: string; major: i64; minor: i64; patch: i64; }
```

The DRM driver bound to a device: its name and version.

- `name`: `string`
- `major`: `i64`
- `minor`: `i64`
- `patch`: `i64`

## Functions

### `versionRequest`

```gizlang
function versionRequest(name: u64, date: u64, desc: u64): bytes
```

The request for DRM_IOCTL_VERSION, with the name, date and description buffers at the given native addresses.

Effects: fail.

### `parseVersion`

```gizlang
function parseVersion(reply: bytes, name: string): Driver
```

The driver from the reply to the version request, with the name the buffer held.

Effects: fail.

### `driver`

```gizlang
function driver(h: Device.Handle): Driver throws string
```

The DRM driver bound to the device behind `h`.

Effects: fail, io.

### `timelineWaitRequest`

```gizlang
function timelineWaitRequest(handles: u64, points: u64): bytes
```

The request for the timeline wait on the syncobj handles at `handles` (one u32) and the point at `points` (one u64).

Effects: fail.

### `waitPoint`

```gizlang
function waitPoint(h: Device.Handle, syncobj: i64, point: u64): void throws string
```

Waits, without a timeout, until timeline syncobj `syncobj` reaches `point`.

Effects: fail, io.

gizhw:drm

The DRM requests every DRM-based accelerator of the accel class answers (drm/drm.h): the version request, which names the driver bound to a node, and the wait on a timeline syncobj. A request is an ioctl on a Handle of gizhw:device; the layouts are the kernel's.

gizlang

import * as Drm from "gizhw:drm";

Types

`Driver`

gizlang

type Driver = { name: string; major: i64; minor: i64; patch: i64; }

The DRM driver bound to a device: its name and version.

name: string
major: i64
minor: i64
patch: i64

Functions

`versionRequest`

gizlang

function versionRequest(name: u64, date: u64, desc: u64): bytes

The request for DRM_IOCTL_VERSION, with the name, date and description buffers at the given native addresses.

Effects: fail.

`parseVersion`

gizlang

function parseVersion(reply: bytes, name: string): Driver

The driver from the reply to the version request, with the name the buffer held.

Effects: fail.

`driver`

gizlang

function driver(h: Device.Handle): Driver throws string

The DRM driver bound to the device behind h.

Effects: fail, io.

`timelineWaitRequest`

gizlang

function timelineWaitRequest(handles: u64, points: u64): bytes

The request for the timeline wait on the syncobj handles at handles (one u32) and the point at points (one u64).

Effects: fail.

`waitPoint`

gizlang

function waitPoint(h: Device.Handle, syncobj: i64, point: u64): void throws string

Waits, without a timeout, until timeline syncobj syncobj reaches point.

Effects: fail, io.