1*83d290c5STom Rini /* SPDX-License-Identifier: GPL-2.0 */ 2a2f5d091SSimon Glass /* 3a2f5d091SSimon Glass * From coreboot file of the same name 4a2f5d091SSimon Glass * 5a2f5d091SSimon Glass * Copyright (C) 2010 coresystems GmbH 6a2f5d091SSimon Glass */ 7a2f5d091SSimon Glass 8a2f5d091SSimon Glass #ifndef __ASM_IOAPIC_H 9a2f5d091SSimon Glass #define __ASM_IOAPIC_H 10a2f5d091SSimon Glass 11a2f5d091SSimon Glass #define IO_APIC_ADDR 0xfec00000 12ba9091f5SBin Meng 13ba9091f5SBin Meng /* Direct addressed register */ 14ba9091f5SBin Meng #define IO_APIC_INDEX (IO_APIC_ADDR + 0x00) 15a2f5d091SSimon Glass #define IO_APIC_DATA (IO_APIC_ADDR + 0x10) 16a2f5d091SSimon Glass 173d232878SBin Meng /* Indirect addressed register offset */ 183d232878SBin Meng #define IO_APIC_ID 0x00 193d232878SBin Meng #define IO_APIC_VER 0x01 203d232878SBin Meng 213d232878SBin Meng /** 223d232878SBin Meng * io_apic_read() - Read I/O APIC register 233d232878SBin Meng * 243d232878SBin Meng * This routine reads I/O APIC indirect addressed register. 253d232878SBin Meng * 263d232878SBin Meng * @reg: address of indirect addressed register 273d232878SBin Meng * @return: register value to read 283d232878SBin Meng */ 293d232878SBin Meng u32 io_apic_read(u32 reg); 303d232878SBin Meng 313d232878SBin Meng /** 323d232878SBin Meng * io_apic_write() - Write I/O APIC register 333d232878SBin Meng * 343d232878SBin Meng * This routine writes I/O APIC indirect addressed register. 353d232878SBin Meng * 363d232878SBin Meng * @reg: address of indirect addressed register 373d232878SBin Meng * @val: register value to write 383d232878SBin Meng */ 393d232878SBin Meng void io_apic_write(u32 reg, u32 val); 403d232878SBin Meng 411cb1611fSSimon Glass void io_apic_set_id(int ioapic_id); 421cb1611fSSimon Glass 43a2f5d091SSimon Glass #endif 44