blob: d1824933467df0167f32a9402ceb863ac0a8b93d (
plain)
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
|
//! AHCI FIS utilities
const ahci_const = @import("../../common/constants/ahci.zig");
const ata = @import("../../common/constants/ata.zig");
const int = @import("../../utils/types/int.zig");
const types = @import("types.zig");
pub fn setup_read(fis: *volatile types.FISRegH2D, lba: u64) void {
fis.fis_type = ahci_const.FIS_TYPE_REG_H2D;
fis.pmport_c = 0x80;
fis.command = ata.CMD_READ_DMA_EX;
fis.lba0 = int.u8_of(lba);
fis.lba1 = int.u8_of(lba >> 8);
fis.lba2 = int.u8_of(lba >> 16);
fis.device = 1 << 6;
fis.lba3 = int.u8_of(lba >> 24);
fis.lba4 = int.u8_of(lba >> 32);
fis.lba5 = int.u8_of(lba >> 40);
fis.countl = 1;
fis.counth = 0;
}
pub fn setup_write(fis: *volatile types.FISRegH2D, lba: u64) void {
fis.fis_type = ahci_const.FIS_TYPE_REG_H2D;
fis.pmport_c = 0x80;
fis.command = ata.CMD_WRITE_DMA_EX;
fis.lba0 = int.u8_of(lba);
fis.lba1 = int.u8_of(lba >> 8);
fis.lba2 = int.u8_of(lba >> 16);
fis.device = 1 << 6;
fis.lba3 = int.u8_of(lba >> 24);
fis.lba4 = int.u8_of(lba >> 32);
fis.lba5 = int.u8_of(lba >> 40);
fis.countl = 1;
fis.counth = 0;
}
|
