| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpi.h> |
| #include <acpi/acpigen.h> |
| #include <acpi/acpi_sata.h> |
| |
| /* e.g. |
| * generate_sata_ssdt_ports("\_SB.PCI0.SATA", 0x3); |
| * generates: |
| * Scope (\_SB.PCI0.SATA) |
| * { |
| * Device (PR00) |
| * { |
| * Name (_ADR, 0x0000FFFF) // _ADR: Address |
| * } |
| * |
| * Device (PR01) |
| * { |
| * Name (_ADR, 0x0001FFFF) // _ADR: Address |
| * } |
| * } |
| * |
| */ |
| void generate_sata_ssdt_ports(const char *scope, uint32_t enable_map) |
| { |
| int i; |
| uint32_t bit; |
| char port_name[4] = "PR00"; |
| |
| acpigen_write_scope(scope); |
| |
| /* generate a device for every enabled port */ |
| for (i = 0; i < 32; i++) { |
| bit = 1 << i; |
| if (!(bit & enable_map)) |
| continue; |
| |
| port_name[2] = '0' + i / 10; |
| port_name[3] = '0' + i % 10; |
| |
| acpigen_write_device(port_name); |
| |
| acpigen_write_name_dword("_ADR", 0xffff + i * 0x10000); |
| acpigen_pop_len(); /* close PRT%d */ |
| } |
| |
| acpigen_pop_len(); /* close scope */ |
| } |