Alexander Couzens | 7710379 | 2015-04-16 02:03:26 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 Alexander Couzens <lynxis@fe80.eu> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
Alexander Couzens | 7710379 | 2015-04-16 02:03:26 +0200 | [diff] [blame] | 12 | */ |
| 13 | |
| 14 | #include "sata.h" |
| 15 | |
| 16 | #include <arch/acpi.h> |
| 17 | #include <arch/acpigen.h> |
| 18 | |
| 19 | /* e.g. |
| 20 | * generate_sata_ssdt_ports("\_SB.PCI0.SATA", 0x3); |
| 21 | * generates: |
| 22 | * Scope (\_SB.PCI0.SATA) |
| 23 | * { |
| 24 | * Device (PR00) |
| 25 | * { |
| 26 | * Name (_ADR, 0x0000FFFF) // _ADR: Address |
| 27 | * } |
| 28 | * |
| 29 | * Device (PR01) |
| 30 | * { |
| 31 | * Name (_ADR, 0x0001FFFF) // _ADR: Address |
| 32 | * } |
| 33 | * } |
| 34 | * |
| 35 | */ |
| 36 | void generate_sata_ssdt_ports(const char *scope, uint32_t enable_map) |
| 37 | { |
| 38 | int i; |
| 39 | uint32_t bit; |
| 40 | char port_name[4] = "PR00"; |
| 41 | |
| 42 | acpigen_write_scope(scope); |
| 43 | |
| 44 | /* generate a device for every enabled port */ |
| 45 | for (i = 0; i < 32; i++) { |
| 46 | bit = 1 << i; |
| 47 | if (!(bit & enable_map)) |
| 48 | continue; |
| 49 | |
| 50 | port_name[2] = '0' + i / 10; |
| 51 | port_name[3] = '0' + i % 10; |
| 52 | |
| 53 | acpigen_write_device(port_name); |
| 54 | |
| 55 | acpigen_write_name_dword("_ADR", 0xffff + i * 0x10000); |
| 56 | acpigen_pop_len(); /* close PRT%d */ |
| 57 | } |
| 58 | |
| 59 | acpigen_pop_len(); /* close scope */ |
| 60 | } |