1 /* 2 * ARConnect IP Support (Multi core enabler: Cross core IPI, RTC ...) 3 * 4 * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com) 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #ifndef __SOC_ARC_MCIP_H 12 #define __SOC_ARC_MCIP_H 13 14 #include <soc/arc/aux.h> 15 16 #define ARC_REG_MCIP_BCR 0x0d0 17 #define ARC_REG_MCIP_CMD 0x600 18 #define ARC_REG_MCIP_WDATA 0x601 19 #define ARC_REG_MCIP_READBACK 0x602 20 21 struct mcip_cmd { 22 #ifdef CONFIG_CPU_BIG_ENDIAN 23 unsigned int pad:8, param:16, cmd:8; 24 #else 25 unsigned int cmd:8, param:16, pad:8; 26 #endif 27 28 #define CMD_INTRPT_GENERATE_IRQ 0x01 29 #define CMD_INTRPT_GENERATE_ACK 0x02 30 #define CMD_INTRPT_READ_STATUS 0x03 31 #define CMD_INTRPT_CHECK_SOURCE 0x04 32 33 /* Semaphore Commands */ 34 #define CMD_SEMA_CLAIM_AND_READ 0x11 35 #define CMD_SEMA_RELEASE 0x12 36 37 #define CMD_DEBUG_SET_MASK 0x34 38 #define CMD_DEBUG_SET_SELECT 0x36 39 40 #define CMD_GFRC_READ_LO 0x42 41 #define CMD_GFRC_READ_HI 0x43 42 43 #define CMD_IDU_ENABLE 0x71 44 #define CMD_IDU_DISABLE 0x72 45 #define CMD_IDU_SET_MODE 0x74 46 #define CMD_IDU_SET_DEST 0x76 47 #define CMD_IDU_SET_MASK 0x7C 48 49 #define IDU_M_TRIG_LEVEL 0x0 50 #define IDU_M_TRIG_EDGE 0x1 51 52 #define IDU_M_DISTRI_RR 0x0 53 #define IDU_M_DISTRI_DEST 0x2 54 }; 55 56 struct mcip_bcr { 57 #ifdef CONFIG_CPU_BIG_ENDIAN 58 unsigned int pad4:6, pw_dom:1, pad3:1, 59 idu:1, pad2:1, num_cores:6, 60 pad:1, gfrc:1, dbg:1, pw:1, 61 msg:1, sem:1, ipi:1, slv:1, 62 ver:8; 63 #else 64 unsigned int ver:8, 65 slv:1, ipi:1, sem:1, msg:1, 66 pw:1, dbg:1, gfrc:1, pad:1, 67 num_cores:6, pad2:1, idu:1, 68 pad3:1, pw_dom:1, pad4:6; 69 #endif 70 }; 71 72 /* 73 * MCIP programming model 74 * 75 * - Simple commands write {cmd:8,param:16} to MCIP_CMD aux reg 76 * (param could be irq, common_irq, core_id ...) 77 * - More involved commands setup MCIP_WDATA with cmd specific data 78 * before invoking the simple command 79 */ 80 static inline void __mcip_cmd(unsigned int cmd, unsigned int param) 81 { 82 struct mcip_cmd buf; 83 84 buf.pad = 0; 85 buf.cmd = cmd; 86 buf.param = param; 87 88 WRITE_AUX(ARC_REG_MCIP_CMD, buf); 89 } 90 91 /* 92 * Setup additional data for a cmd 93 * Callers need to lock to ensure atomicity 94 */ 95 static inline void __mcip_cmd_data(unsigned int cmd, unsigned int param, 96 unsigned int data) 97 { 98 write_aux_reg(ARC_REG_MCIP_WDATA, data); 99 100 __mcip_cmd(cmd, param); 101 } 102 103 #endif 104