hal.rs

 1// SPDX-License-Identifier: GPL-2.0
 2
 3use kernel::prelude::*;
 4
 5use crate::{
 6    driver::Bar0,
 7    gpu::Chipset, //
 8};
 9
10mod ga100;
11mod ga102;
12mod tu102;
13
14pub(crate) trait FbHal {
15    /// Returns the address of the currently-registered sysmem flush page.
16    fn read_sysmem_flush_page(&self, bar: &Bar0) -> u64;
17
18    /// Register `addr` as the address of the sysmem flush page.
19    ///
20    /// This might fail if the address is too large for the receiving register.
21    fn write_sysmem_flush_page(&self, bar: &Bar0, addr: u64) -> Result;
22
23    /// Returns `true` is display is supported.
24    fn supports_display(&self, bar: &Bar0) -> bool;
25
26    /// Returns the VRAM size, in bytes.
27    fn vidmem_size(&self, bar: &Bar0) -> u64;
28}
29
30/// Returns the HAL corresponding to `chipset`.
31pub(super) fn fb_hal(chipset: Chipset) -> &'static dyn FbHal {
32    use Chipset::*;
33
34    match chipset {
35        TU102 | TU104 | TU106 | TU117 | TU116 => tu102::TU102_HAL,
36        GA100 => ga100::GA100_HAL,
37        GA102 | GA103 | GA104 | GA106 | GA107 | AD102 | AD103 | AD104 | AD106 | AD107 => {
38            ga102::GA102_HAL
39        }
40    }
41}