1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// SPDX-License-Identifier: GPL-2.0
use crate::driver::{NovaDevice, NovaDriver};
use crate::gem;
use kernel::{
alloc::flags::*,
drm::{self, device::Device as DrmDevice, gem::BaseObject},
prelude::*,
uapi,
};
pub(crate) struct File();
/// Convenience type alias for our DRM `File` type
pub(crate) type DrmFile = drm::file::File<File>;
impl drm::file::DriverFile for File {
type Driver = NovaDriver;
fn open(dev: &DrmDevice<Self::Driver>) -> Result<Pin<KBox<Self>>> {
dev_dbg!(dev.as_ref(), "drm::device::Device::open\n");
Ok(KBox::new(Self(), GFP_KERNEL)?.into())
}
}
impl File {
/// IOCTL: get_param: Query GPU / driver metadata.
pub(crate) fn get_param(
dev: &NovaDevice,
getparam: &mut uapi::drm_nova_getparam,
_file: &DrmFile,
) -> Result<u32> {
let pdev = &dev.data().pdev;
getparam.value = match getparam.param as u32 {
uapi::NOVA_GETPARAM_VRAM_BAR_SIZE => pdev.resource_len(1)?,
_ => return Err(EINVAL),
};
Ok(0)
}
/// IOCTL: gem_create: Create a new DRM GEM object.
pub(crate) fn gem_create(
dev: &NovaDevice,
req: &mut uapi::drm_nova_gem_create,
file: &DrmFile,
) -> Result<u32> {
let obj = gem::object_new(dev, req.size.try_into()?)?;
let handle = obj.create_handle(file)?;
req.handle = handle;
Ok(0)
}
/// IOCTL: gem_info: Query GEM metadata.
pub(crate) fn gem_info(
_dev: &NovaDevice,
req: &mut uapi::drm_nova_gem_info,
file: &DrmFile,
) -> Result<u32> {
let bo = gem::lookup_handle(file, req.handle)?;
req.size = bo.size().try_into()?;
Ok(0)
}
}
|
