| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <device/device.h> |
| #include <device/pnp.h> |
| #include <acpi/acpigen.h> |
| #include <console/console.h> |
| |
| static void generic_set_resources(struct device *dev) |
| { |
| struct resource *res; |
| |
| if (dev->link_list) |
| assign_resources(dev->link_list); |
| |
| for (res = dev->resource_list; res; res = res->next) { |
| if (!(res->flags & IORESOURCE_ASSIGNED)) |
| continue; |
| |
| res->flags |= IORESOURCE_STORED; |
| report_resource_stored(dev, res, ""); |
| } |
| } |
| |
| static void generic_read_resources(struct device *dev) |
| { |
| struct resource *res = new_resource(dev, 0); |
| res->base = dev->path.pnp.port; |
| res->size = 2; |
| res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| } |
| |
| #if CONFIG(HAVE_ACPI_TABLES) |
| static void generic_ssdt(const struct device *dev) |
| { |
| const char *scope = acpi_device_scope(dev); |
| const char *name = acpi_device_name(dev); |
| |
| if (!scope || !name) { |
| printk(BIOS_ERR, "%s: Missing ACPI path/scope\n", dev_path(dev)); |
| return; |
| } |
| |
| /* Device */ |
| acpigen_write_scope(scope); |
| acpigen_write_device(name); |
| |
| printk(BIOS_DEBUG, "%s.%s: %s\n", scope, name, dev_path(dev)); |
| |
| acpigen_write_name_string("_HID", "PNP0C02"); |
| acpigen_write_name_string("_DDN", dev_name(dev)); |
| |
| /* OperationRegion("IOID", SYSTEMIO, port, 2) */ |
| struct opregion opreg = OPREGION("IOID", SYSTEMIO, dev->path.pnp.port, 2); |
| acpigen_write_opregion(&opreg); |
| |
| struct fieldlist l[] = { |
| FIELDLIST_OFFSET(0), |
| FIELDLIST_NAMESTR("INDX", 8), |
| FIELDLIST_NAMESTR("DATA", 8), |
| }; |
| |
| /* Field (IOID, AnyAcc, NoLock, Preserve) |
| * { |
| * Offset (0), |
| * INDX, 8, |
| * DATA, 8, |
| * } */ |
| acpigen_write_field(opreg.name, l, ARRAY_SIZE(l), FIELD_BYTEACC | FIELD_NOLOCK | |
| FIELD_PRESERVE); |
| |
| struct fieldlist i[] = { |
| FIELDLIST_OFFSET(0x07), |
| FIELDLIST_NAMESTR("LDN", 8), |
| FIELDLIST_OFFSET(0x21), |
| FIELDLIST_NAMESTR("SCF1", 8), |
| FIELDLIST_NAMESTR("SCF2", 8), |
| FIELDLIST_NAMESTR("SCF3", 8), |
| FIELDLIST_NAMESTR("SCF4", 8), |
| FIELDLIST_NAMESTR("SCF5", 8), |
| FIELDLIST_NAMESTR("SCF6", 8), |
| FIELDLIST_NAMESTR("SCF7", 8), |
| FIELDLIST_OFFSET(0x29), |
| FIELDLIST_NAMESTR("CKCF", 8), |
| FIELDLIST_OFFSET(0x2F), |
| FIELDLIST_NAMESTR("SCFF", 8), |
| FIELDLIST_OFFSET(0x30), |
| FIELDLIST_NAMESTR("ACT0", 1), |
| FIELDLIST_NAMESTR("ACT1", 1), |
| FIELDLIST_NAMESTR("ACT2", 1), |
| FIELDLIST_NAMESTR("ACT3", 1), |
| FIELDLIST_NAMESTR("ACT4", 1), |
| FIELDLIST_NAMESTR("ACT5", 1), |
| FIELDLIST_NAMESTR("ACT6", 1), |
| FIELDLIST_NAMESTR("ACT7", 1), |
| FIELDLIST_OFFSET(0x60), |
| FIELDLIST_NAMESTR("IOH0", 8), |
| FIELDLIST_NAMESTR("IOL0", 8), |
| FIELDLIST_NAMESTR("IOH1", 8), |
| FIELDLIST_NAMESTR("IOL1", 8), |
| FIELDLIST_NAMESTR("IOH2", 8), |
| FIELDLIST_NAMESTR("IOL2", 8), |
| FIELDLIST_NAMESTR("IOH3", 8), |
| FIELDLIST_NAMESTR("IOL3", 8), |
| FIELDLIST_OFFSET(0x70), |
| /* Interrupt level 0 (IRQ number) */ |
| FIELDLIST_NAMESTR("ITL0", 4), |
| FIELDLIST_OFFSET(0x71), |
| /* Interrupt type 0 */ |
| FIELDLIST_NAMESTR("ITT0", 2), |
| FIELDLIST_OFFSET(0x72), |
| /* Interrupt level 1 (IRQ number) */ |
| FIELDLIST_NAMESTR("ITL1", 4), |
| FIELDLIST_OFFSET(0x73), |
| /* Interrupt type 1 */ |
| FIELDLIST_NAMESTR("ITT1", 2), |
| FIELDLIST_OFFSET(0x74), |
| FIELDLIST_NAMESTR("DMCH", 8), |
| FIELDLIST_OFFSET(0xE0), |
| FIELDLIST_NAMESTR("RGE0", 8), |
| FIELDLIST_NAMESTR("RGE1", 8), |
| FIELDLIST_NAMESTR("RGE2", 8), |
| FIELDLIST_NAMESTR("RGE3", 8), |
| FIELDLIST_NAMESTR("RGE4", 8), |
| FIELDLIST_NAMESTR("RGE5", 8), |
| FIELDLIST_NAMESTR("RGE6", 8), |
| FIELDLIST_NAMESTR("RGE7", 8), |
| FIELDLIST_NAMESTR("RGE8", 8), |
| FIELDLIST_NAMESTR("RGE9", 8), |
| FIELDLIST_NAMESTR("RGEA", 8), |
| FIELDLIST_OFFSET(0xF0), |
| FIELDLIST_NAMESTR("OPT0", 8), |
| FIELDLIST_NAMESTR("OPT1", 8), |
| FIELDLIST_NAMESTR("OPT2", 8), |
| FIELDLIST_NAMESTR("OPT3", 8), |
| FIELDLIST_NAMESTR("OPT4", 8), |
| FIELDLIST_NAMESTR("OPT5", 8), |
| FIELDLIST_NAMESTR("OPT6", 8), |
| FIELDLIST_NAMESTR("OPT7", 8), |
| FIELDLIST_NAMESTR("OPT8", 8), |
| FIELDLIST_NAMESTR("OPT9", 8), |
| }; |
| |
| acpigen_write_indexfield("INDX", "DATA", i, ARRAY_SIZE(i), FIELD_BYTEACC | |
| FIELD_NOLOCK | FIELD_PRESERVE); |
| |
| const char *mutex = "MTX0"; |
| |
| acpigen_write_mutex(mutex, 0); |
| /* Backup LDN */ |
| acpigen_write_name_integer("BLDN", 0); |
| |
| /* Acquire mutex - Enter config mode */ |
| acpigen_write_method("AMTX", 0); |
| { |
| acpigen_write_acquire(mutex, 0xffff); |
| |
| /* Pick one of the children as the generic SIO doesn't have config mode */ |
| if (dev->link_list && dev->link_list->children) |
| pnp_ssdt_enter_conf_mode(dev->link_list->children, "^INDX", "^DATA"); |
| |
| /* Backup LDN */ |
| acpigen_write_store(); |
| acpigen_emit_namestring("^LDN"); |
| acpigen_emit_namestring("^BLDN"); |
| } |
| acpigen_pop_len(); /* Method */ |
| |
| /* Release mutex - Exit config mode */ |
| acpigen_write_method("RMTX", 0); |
| { |
| /* Restore LDN */ |
| acpigen_write_store(); |
| acpigen_emit_namestring("^BLDN"); |
| acpigen_emit_namestring("^LDN"); |
| |
| /* Pick one of the children as the generic SIO doesn't have config mode */ |
| if (dev->link_list && dev->link_list->children) |
| pnp_ssdt_exit_conf_mode(dev->link_list->children, "^INDX", "^DATA"); |
| |
| acpigen_write_release(mutex); |
| } |
| acpigen_pop_len(); /* Method */ |
| |
| /* Select a LDN */ |
| acpigen_write_method("SLDN", 1); |
| { |
| /* Local0 = Arg0 & 0xff */ |
| acpigen_emit_byte(AND_OP); |
| acpigen_write_integer(0xff); |
| acpigen_emit_byte(ARG0_OP); |
| acpigen_emit_byte(LOCAL0_OP); |
| |
| /* LDN = LOCAL0_OP */ |
| acpigen_write_store(); |
| acpigen_emit_byte(LOCAL0_OP); |
| acpigen_emit_namestring("^LDN"); |
| } |
| acpigen_pop_len(); /* Method */ |
| |
| /* Disable a LDN/VLDN */ |
| acpigen_write_method("DLDN", 1); |
| { |
| /* AMTX() */ |
| acpigen_emit_namestring("AMTX"); |
| |
| /* SLDN (Local0) */ |
| acpigen_emit_namestring("SLDN"); |
| acpigen_emit_byte(ARG0_OP); |
| |
| /* Local0 = Arg0 >> 8 */ |
| acpigen_emit_byte(SHIFT_RIGHT_OP); |
| acpigen_emit_byte(ARG0_OP); |
| acpigen_write_integer(8); |
| acpigen_emit_byte(LOCAL0_OP); |
| |
| /* Local0 = Local0 & 0x7 */ |
| acpigen_emit_byte(AND_OP); |
| acpigen_write_integer(0x7); |
| acpigen_emit_byte(LOCAL0_OP); |
| acpigen_emit_byte(LOCAL0_OP); |
| |
| for (int j = 0; j < 8; j++) { |
| char act[6] = "^ACT0"; |
| act[4] += j; |
| |
| /* If (Local0 == j) { */ |
| acpigen_write_if_lequal_op_int(LOCAL0_OP, j); |
| |
| /* ACT[j] = 0 */ |
| acpigen_write_store(); |
| acpigen_emit_byte(ZERO_OP); |
| acpigen_emit_namestring(act); |
| |
| acpigen_pop_len(); /* } */ |
| } |
| |
| /* RMTX() */ |
| acpigen_emit_namestring("RMTX"); |
| } |
| acpigen_pop_len(); /* Method */ |
| |
| /* Query LDN enable state. Returns 1 if LDN/VLDN is enabled. */ |
| acpigen_write_method("QLDN", 1); |
| { |
| acpigen_emit_namestring("AMTX"); |
| |
| /* SLDN (Local0) */ |
| acpigen_emit_namestring("SLDN"); |
| acpigen_emit_byte(ARG0_OP); |
| |
| /* Local0 = Arg0 >> 8 */ |
| acpigen_emit_byte(SHIFT_RIGHT_OP); |
| acpigen_emit_byte(ARG0_OP); |
| acpigen_write_integer(8); |
| acpigen_emit_byte(LOCAL0_OP); |
| |
| /* Local0 = Local0 & 0x7 */ |
| acpigen_emit_byte(AND_OP); |
| acpigen_write_integer(0x7); |
| acpigen_emit_byte(LOCAL0_OP); |
| acpigen_emit_byte(LOCAL0_OP); |
| |
| for (int j = 0; j < 8; j++) { |
| char act[6] = "^ACT0"; |
| act[4] += j; |
| /* If (Local0 == j) { */ |
| acpigen_write_if_lequal_op_int(LOCAL0_OP, j); |
| |
| /* Local1 = ACT[j] */ |
| acpigen_write_store(); |
| acpigen_emit_namestring(act); |
| acpigen_emit_byte(LOCAL1_OP); |
| |
| acpigen_pop_len(); /* } */ |
| } |
| |
| /* RMTX() */ |
| acpigen_emit_namestring("RMTX"); |
| |
| /* Return (Local1) */ |
| acpigen_emit_byte(RETURN_OP); |
| acpigen_emit_byte(LOCAL1_OP); |
| } |
| acpigen_pop_len(); /* Method */ |
| |
| acpigen_pop_len(); /* Device */ |
| acpigen_pop_len(); /* Scope */ |
| } |
| |
| static const char *generic_acpi_name(const struct device *dev) |
| { |
| return "SIO0"; |
| } |
| #endif |
| |
| static struct device_operations ops = { |
| .read_resources = generic_read_resources, |
| .set_resources = generic_set_resources, |
| .scan_bus = scan_static_bus, |
| #if CONFIG(HAVE_ACPI_TABLES) |
| .acpi_fill_ssdt = generic_ssdt, |
| .acpi_name = generic_acpi_name, |
| #endif |
| }; |
| |
| static void enable_dev(struct device *dev) |
| { |
| if (dev->path.type != DEVICE_PATH_PNP) |
| printk(BIOS_ERR, "%s: Unsupported device type\n", dev_path(dev)); |
| else if (!dev->path.pnp.port) |
| printk(BIOS_ERR, "%s: Base address not set\n", dev_path(dev)); |
| else |
| dev->ops = &ops; |
| |
| } |
| |
| struct chip_operations superio_common_ops = { |
| CHIP_NAME("Generic Super I/O") |
| .enable_dev = enable_dev, |
| }; |