1 /*- 2 * Copyright (c) 2018 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef _ARM64_CORESIGHT_CORESIGHT_H_ 34 #define _ARM64_CORESIGHT_CORESIGHT_H_ 35 36 #include <dev/ofw/openfirm.h> 37 38 #define CORESIGHT_ITCTRL 0xf00 39 #define CORESIGHT_CLAIMSET 0xfa0 40 #define CORESIGHT_CLAIMCLR 0xfa4 41 #define CORESIGHT_LAR 0xfb0 42 #define CORESIGHT_UNLOCK 0xc5acce55 43 #define CORESIGHT_LSR 0xfb4 44 #define CORESIGHT_AUTHSTATUS 0xfb8 45 #define CORESIGHT_DEVID 0xfc8 46 #define CORESIGHT_DEVTYPE 0xfcc 47 48 enum cs_dev_type { 49 CORESIGHT_ETMV4, 50 CORESIGHT_TMC, 51 CORESIGHT_DYNAMIC_REPLICATOR, 52 CORESIGHT_FUNNEL, 53 CORESIGHT_CPU_DEBUG, 54 }; 55 56 struct coresight_device { 57 TAILQ_ENTRY(coresight_device) link; 58 device_t dev; 59 phandle_t node; 60 enum cs_dev_type dev_type; 61 struct coresight_platform_data *pdata; 62 }; 63 64 struct endpoint { 65 TAILQ_ENTRY(endpoint) link; 66 phandle_t my_node; 67 phandle_t their_node; 68 phandle_t dev_node; 69 boolean_t slave; 70 int reg; 71 struct coresight_device *cs_dev; 72 LIST_ENTRY(endpoint) endplink; 73 }; 74 75 struct coresight_platform_data { 76 int cpu; 77 int in_ports; 78 int out_ports; 79 struct mtx mtx_lock; 80 TAILQ_HEAD(endpoint_list, endpoint) endpoints; 81 }; 82 83 struct coresight_desc { 84 struct coresight_platform_data *pdata; 85 device_t dev; 86 enum cs_dev_type dev_type; 87 }; 88 89 TAILQ_HEAD(coresight_device_list, coresight_device); 90 91 #define ETM_N_COMPRATOR 16 92 93 struct etm_state { 94 uint32_t trace_id; 95 }; 96 97 struct etr_state { 98 boolean_t started; 99 uint32_t cycle; 100 uint32_t offset; 101 uint32_t low; 102 uint32_t high; 103 uint32_t bufsize; 104 uint32_t flags; 105 #define ETR_FLAG_ALLOCATE (1 << 0) 106 #define ETR_FLAG_RELEASE (1 << 1) 107 }; 108 109 struct coresight_event { 110 LIST_HEAD(, endpoint) endplist; 111 112 uint64_t addr[ETM_N_COMPRATOR]; 113 uint32_t naddr; 114 uint8_t excp_level; 115 enum cs_dev_type src; 116 enum cs_dev_type sink; 117 118 struct etr_state etr; 119 struct etm_state etm; 120 }; 121 122 struct etm_config { 123 uint64_t addr[ETM_N_COMPRATOR]; 124 uint32_t naddr; 125 uint8_t excp_level; 126 }; 127 128 struct coresight_platform_data * coresight_get_platform_data(device_t dev); 129 struct endpoint * coresight_get_output_endpoint(struct coresight_platform_data *pdata); 130 struct coresight_device * coresight_get_output_device(struct endpoint *endp, struct endpoint **); 131 int coresight_register(struct coresight_desc *desc); 132 int coresight_init_event(int cpu, struct coresight_event *event); 133 void coresight_enable(int cpu, struct coresight_event *event); 134 void coresight_disable(int cpu, struct coresight_event *event); 135 void coresight_read(int cpu, struct coresight_event *event); 136 137 #endif /* !_ARM64_CORESIGHT_CORESIGHT_H_ */ 138