1 /* SPDX-License-Identifier: GPL-2.0 */
3 * From coreboot file of same name
5 * Copyright (C) 2014 Google, Inc
8 #ifndef _ARCH_ASM_LAPIC_H
9 #define _ARCH_ASM_LAPIC_H
11 #define LAPIC_DEFAULT_BASE 0xfee00000
13 #define LAPIC_ID 0x020
14 #define LAPIC_LVR 0x030
16 #define LAPIC_TASKPRI 0x080
17 #define LAPIC_TPRI_MASK 0xff
19 #define LAPIC_RRR 0x0c0
21 #define LAPIC_SPIV 0x0f0
22 #define LAPIC_SPIV_ENABLE 0x100
24 #define LAPIC_ICR 0x300
25 #define LAPIC_DEST_SELF 0x40000
26 #define LAPIC_DEST_ALLINC 0x80000
27 #define LAPIC_DEST_ALLBUT 0xc0000
28 #define LAPIC_ICR_RR_MASK 0x30000
29 #define LAPIC_ICR_RR_INVALID 0x00000
30 #define LAPIC_ICR_RR_INPROG 0x10000
31 #define LAPIC_ICR_RR_VALID 0x20000
32 #define LAPIC_INT_LEVELTRIG 0x08000
33 #define LAPIC_INT_ASSERT 0x04000
34 #define LAPIC_ICR_BUSY 0x01000
35 #define LAPIC_DEST_LOGICAL 0x00800
36 #define LAPIC_DM_FIXED 0x00000
37 #define LAPIC_DM_LOWEST 0x00100
38 #define LAPIC_DM_SMI 0x00200
39 #define LAPIC_DM_REMRD 0x00300
40 #define LAPIC_DM_NMI 0x00400
41 #define LAPIC_DM_INIT 0x00500
42 #define LAPIC_DM_STARTUP 0x00600
43 #define LAPIC_DM_EXTINT 0x00700
44 #define LAPIC_VECTOR_MASK 0x000ff
46 #define LAPIC_ICR2 0x310
47 #define GET_LAPIC_DEST_FIELD(x) (((x) >> 24) & 0xff)
48 #define SET_LAPIC_DEST_FIELD(x) ((x) << 24)
50 #define LAPIC_LVT0 0x350
51 #define LAPIC_LVT1 0x360
52 #define LAPIC_LVT_MASKED (1 << 16)
53 #define LAPIC_LVT_LEVEL_TRIGGER (1 << 15)
54 #define LAPIC_LVT_REMOTE_IRR (1 << 14)
55 #define LAPIC_INPUT_POLARITY (1 << 13)
56 #define LAPIC_SEND_PENDING (1 << 12)
57 #define LAPIC_LVT_RESERVED_1 (1 << 11)
58 #define LAPIC_DELIVERY_MODE_MASK (7 << 8)
59 #define LAPIC_DELIVERY_MODE_FIXED (0 << 8)
60 #define LAPIC_DELIVERY_MODE_NMI (4 << 8)
61 #define LAPIC_DELIVERY_MODE_EXTINT (7 << 8)
63 unsigned long lapic_read(unsigned long reg);
65 void lapic_write(unsigned long reg, unsigned long v);
67 void enable_lapic(void);
69 void disable_lapic(void);
71 unsigned long lapicid(void);
73 int lapic_remote_read(int apicid, int reg, unsigned long *pvalue);
75 void lapic_setup(void);