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git.ipfire.org Git - thirdparty/kernel/stable.git/blob - include/soc/arc/mcip.h
1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * ARConnect IP Support (Multi core enabler: Cross core IPI, RTC ...)
5 * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
8 #ifndef __SOC_ARC_MCIP_H
9 #define __SOC_ARC_MCIP_H
11 #include <soc/arc/aux.h>
13 #define ARC_REG_MCIP_BCR 0x0d0
14 #define ARC_REG_MCIP_IDU_BCR 0x0D5
15 #define ARC_REG_GFRC_BUILD 0x0D6
16 #define ARC_REG_MCIP_CMD 0x600
17 #define ARC_REG_MCIP_WDATA 0x601
18 #define ARC_REG_MCIP_READBACK 0x602
21 #ifdef CONFIG_CPU_BIG_ENDIAN
22 unsigned int pad
:8, param
:16, cmd
:8;
24 unsigned int cmd
:8, param
:16, pad
:8;
27 #define CMD_INTRPT_GENERATE_IRQ 0x01
28 #define CMD_INTRPT_GENERATE_ACK 0x02
29 #define CMD_INTRPT_READ_STATUS 0x03
30 #define CMD_INTRPT_CHECK_SOURCE 0x04
32 /* Semaphore Commands */
33 #define CMD_SEMA_CLAIM_AND_READ 0x11
34 #define CMD_SEMA_RELEASE 0x12
36 #define CMD_DEBUG_SET_MASK 0x34
37 #define CMD_DEBUG_READ_MASK 0x35
38 #define CMD_DEBUG_SET_SELECT 0x36
39 #define CMD_DEBUG_READ_SELECT 0x37
41 #define CMD_GFRC_READ_LO 0x42
42 #define CMD_GFRC_READ_HI 0x43
43 #define CMD_GFRC_SET_CORE 0x47
44 #define CMD_GFRC_READ_CORE 0x48
46 #define CMD_IDU_ENABLE 0x71
47 #define CMD_IDU_DISABLE 0x72
48 #define CMD_IDU_SET_MODE 0x74
49 #define CMD_IDU_SET_DEST 0x76
50 #define CMD_IDU_SET_MASK 0x7C
52 #define IDU_M_TRIG_LEVEL 0x0
53 #define IDU_M_TRIG_EDGE 0x1
55 #define IDU_M_DISTRI_RR 0x0
56 #define IDU_M_DISTRI_DEST 0x2
60 #ifdef CONFIG_CPU_BIG_ENDIAN
61 unsigned int pad4
:6, pw_dom
:1, pad3
:1,
62 idu
:1, pad2
:1, num_cores
:6,
63 pad
:1, gfrc
:1, dbg
:1, pw
:1,
64 msg
:1, sem
:1, ipi
:1, slv
:1,
68 slv
:1, ipi
:1, sem
:1, msg
:1,
69 pw
:1, dbg
:1, gfrc
:1, pad
:1,
70 num_cores
:6, pad2
:1, idu
:1,
71 pad3
:1, pw_dom
:1, pad4
:6;
76 #ifdef CONFIG_CPU_BIG_ENDIAN
77 unsigned int pad
:21, cirqnum
:3, ver
:8;
79 unsigned int ver
:8, cirqnum
:3, pad
:21;
85 * Build register for IDU contains not an actual number of supported common
86 * interrupts but an exponent of 2 which must be multiplied by 4 to
87 * get a number of supported common interrupts.
89 #define mcip_idu_bcr_to_nr_irqs(bcr) (4 * (1 << (bcr).cirqnum))
92 * MCIP programming model
94 * - Simple commands write {cmd:8,param:16} to MCIP_CMD aux reg
95 * (param could be irq, common_irq, core_id ...)
96 * - More involved commands setup MCIP_WDATA with cmd specific data
97 * before invoking the simple command
99 static inline void __mcip_cmd(unsigned int cmd
, unsigned int param
)
107 WRITE_AUX(ARC_REG_MCIP_CMD
, buf
);
111 * Setup additional data for a cmd
112 * Callers need to lock to ensure atomicity
114 static inline void __mcip_cmd_data(unsigned int cmd
, unsigned int param
,
117 write_aux_reg(ARC_REG_MCIP_WDATA
, data
);
119 __mcip_cmd(cmd
, param
);