Christophe Lombard | 444c4ba | 2016-03-04 12:26:34 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 IBM Corp. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | */ |
| 9 | |
| 10 | #ifndef _HCALLS_H |
| 11 | #define _HCALLS_H |
| 12 | |
| 13 | #include <linux/types.h> |
| 14 | #include <asm/byteorder.h> |
Christophe Lombard | 14baf4d | 2016-03-04 12:26:36 +0100 | [diff] [blame] | 15 | #include <asm/hvcall.h> |
Christophe Lombard | 444c4ba | 2016-03-04 12:26:34 +0100 | [diff] [blame] | 16 | #include "cxl.h" |
| 17 | |
| 18 | #define SG_BUFFER_SIZE 4096 |
| 19 | #define SG_MAX_ENTRIES 256 |
| 20 | |
| 21 | struct sg_list { |
| 22 | u64 phys_addr; |
| 23 | u64 len; |
| 24 | }; |
| 25 | |
| 26 | /* |
| 27 | * This is straight out of PAPR, but replacing some of the compound fields with |
| 28 | * a single field, where they were identical to the register layout. |
| 29 | * |
| 30 | * The 'flags' parameter regroups the various bit-fields |
| 31 | */ |
| 32 | #define CXL_PE_CSRP_VALID (1ULL << 63) |
| 33 | #define CXL_PE_PROBLEM_STATE (1ULL << 62) |
| 34 | #define CXL_PE_SECONDARY_SEGMENT_TBL_SRCH (1ULL << 61) |
| 35 | #define CXL_PE_TAGS_ACTIVE (1ULL << 60) |
| 36 | #define CXL_PE_USER_STATE (1ULL << 59) |
| 37 | #define CXL_PE_TRANSLATION_ENABLED (1ULL << 58) |
| 38 | #define CXL_PE_64_BIT (1ULL << 57) |
| 39 | #define CXL_PE_PRIVILEGED_PROCESS (1ULL << 56) |
| 40 | |
| 41 | #define CXL_PROCESS_ELEMENT_VERSION 1 |
| 42 | struct cxl_process_element_hcall { |
| 43 | __be64 version; |
| 44 | __be64 flags; |
| 45 | u8 reserved0[12]; |
| 46 | __be32 pslVirtualIsn; |
| 47 | u8 applicationVirtualIsnBitmap[256]; |
| 48 | u8 reserved1[144]; |
| 49 | struct cxl_process_element_common common; |
| 50 | u8 reserved4[12]; |
| 51 | } __packed; |
| 52 | |
| 53 | #define H_STATE_NORMAL 1 |
| 54 | #define H_STATE_DISABLE 2 |
| 55 | #define H_STATE_TEMP_UNAVAILABLE 3 |
| 56 | #define H_STATE_PERM_UNAVAILABLE 4 |
| 57 | |
| 58 | /* NOTE: element must be a logical real address, and must be pinned */ |
| 59 | long cxl_h_attach_process(u64 unit_address, struct cxl_process_element_hcall *element, |
| 60 | u64 *process_token, u64 *mmio_addr, u64 *mmio_size); |
| 61 | |
| 62 | /** |
| 63 | * cxl_h_detach_process - Detach a process element from a coherent |
| 64 | * platform function. |
| 65 | */ |
| 66 | long cxl_h_detach_process(u64 unit_address, u64 process_token); |
| 67 | |
| 68 | /** |
| 69 | * cxl_h_reset_afu - Perform a reset to the coherent platform function. |
| 70 | */ |
| 71 | long cxl_h_reset_afu(u64 unit_address); |
| 72 | |
| 73 | /** |
| 74 | * cxl_h_suspend_process - Suspend a process from being executed |
| 75 | * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when |
| 76 | * process was attached. |
| 77 | */ |
| 78 | long cxl_h_suspend_process(u64 unit_address, u64 process_token); |
| 79 | |
| 80 | /** |
| 81 | * cxl_h_resume_process - Resume a process to be executed |
| 82 | * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when |
| 83 | * process was attached. |
| 84 | */ |
| 85 | long cxl_h_resume_process(u64 unit_address, u64 process_token); |
| 86 | |
| 87 | /** |
| 88 | * cxl_h_read_error_state - Reads the error state of the coherent |
| 89 | * platform function. |
| 90 | * R4 contains the error state |
| 91 | */ |
| 92 | long cxl_h_read_error_state(u64 unit_address, u64 *state); |
| 93 | |
| 94 | /** |
| 95 | * cxl_h_get_afu_err - collect the AFU error buffer |
| 96 | * Parameter1 = byte offset into error buffer to retrieve, valid values |
| 97 | * are between 0 and (ibm,error-buffer-size - 1) |
| 98 | * Parameter2 = 4K aligned real address of error buffer, to be filled in |
| 99 | * Parameter3 = length of error buffer, valid values are 4K or less |
| 100 | */ |
| 101 | long cxl_h_get_afu_err(u64 unit_address, u64 offset, u64 buf_address, u64 len); |
| 102 | |
| 103 | /** |
| 104 | * cxl_h_get_config - collect configuration record for the |
| 105 | * coherent platform function |
| 106 | * Parameter1 = # of configuration record to retrieve, valid values are |
| 107 | * between 0 and (ibm,#config-records - 1) |
| 108 | * Parameter2 = byte offset into configuration record to retrieve, |
| 109 | * valid values are between 0 and (ibm,config-record-size - 1) |
| 110 | * Parameter3 = 4K aligned real address of configuration record buffer, |
| 111 | * to be filled in |
| 112 | * Parameter4 = length of configuration buffer, valid values are 4K or less |
| 113 | */ |
| 114 | long cxl_h_get_config(u64 unit_address, u64 cr_num, u64 offset, |
| 115 | u64 buf_address, u64 len); |
| 116 | |
| 117 | /** |
| 118 | * cxl_h_terminate_process - Terminate the process before completion |
| 119 | * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when |
| 120 | * process was attached. |
| 121 | */ |
| 122 | long cxl_h_terminate_process(u64 unit_address, u64 process_token); |
| 123 | |
| 124 | /** |
| 125 | * cxl_h_collect_vpd - Collect VPD for the coherent platform function. |
| 126 | * Parameter1 = # of VPD record to retrieve, valid values are between 0 |
| 127 | * and (ibm,#config-records - 1). |
| 128 | * Parameter2 = 4K naturally aligned real buffer containing block |
| 129 | * list entries |
| 130 | * Parameter3 = number of block list entries in the block list, valid |
| 131 | * values are between 0 and 256 |
| 132 | */ |
| 133 | long cxl_h_collect_vpd(u64 unit_address, u64 record, u64 list_address, |
| 134 | u64 num, u64 *out); |
| 135 | |
| 136 | /** |
| 137 | * cxl_h_get_fn_error_interrupt - Read the function-wide error data based on an interrupt |
| 138 | */ |
| 139 | long cxl_h_get_fn_error_interrupt(u64 unit_address, u64 *reg); |
| 140 | |
| 141 | /** |
| 142 | * cxl_h_ack_fn_error_interrupt - Acknowledge function-wide error data |
| 143 | * based on an interrupt |
| 144 | * Parameter1 = value to write to the function-wide error interrupt register |
| 145 | */ |
| 146 | long cxl_h_ack_fn_error_interrupt(u64 unit_address, u64 value); |
| 147 | |
| 148 | /** |
| 149 | * cxl_h_get_error_log - Retrieve the Platform Log ID (PLID) of |
| 150 | * an error log |
| 151 | */ |
| 152 | long cxl_h_get_error_log(u64 unit_address, u64 value); |
| 153 | |
| 154 | /** |
| 155 | * cxl_h_collect_int_info - Collect interrupt info about a coherent |
| 156 | * platform function after an interrupt occurred. |
| 157 | */ |
| 158 | long cxl_h_collect_int_info(u64 unit_address, u64 process_token, |
| 159 | struct cxl_irq_info *info); |
| 160 | |
| 161 | /** |
| 162 | * cxl_h_control_faults - Control the operation of a coherent platform |
| 163 | * function after a fault occurs. |
| 164 | * |
| 165 | * Parameters |
| 166 | * control-mask: value to control the faults |
| 167 | * looks like PSL_TFC_An shifted >> 32 |
| 168 | * reset-mask: mask to control reset of function faults |
| 169 | * Set reset_mask = 1 to reset PSL errors |
| 170 | */ |
| 171 | long cxl_h_control_faults(u64 unit_address, u64 process_token, |
| 172 | u64 control_mask, u64 reset_mask); |
| 173 | |
| 174 | /** |
| 175 | * cxl_h_reset_adapter - Perform a reset to the coherent platform facility. |
| 176 | */ |
| 177 | long cxl_h_reset_adapter(u64 unit_address); |
| 178 | |
| 179 | /** |
| 180 | * cxl_h_collect_vpd - Collect VPD for the coherent platform function. |
| 181 | * Parameter1 = 4K naturally aligned real buffer containing block |
| 182 | * list entries |
| 183 | * Parameter2 = number of block list entries in the block list, valid |
| 184 | * values are between 0 and 256 |
| 185 | */ |
| 186 | long cxl_h_collect_vpd_adapter(u64 unit_address, u64 list_address, |
| 187 | u64 num, u64 *out); |
| 188 | |
| 189 | /** |
| 190 | * cxl_h_download_adapter_image - Download the base image to the coherent |
| 191 | * platform facility. |
| 192 | */ |
| 193 | long cxl_h_download_adapter_image(u64 unit_address, |
| 194 | u64 list_address, u64 num, |
| 195 | u64 *out); |
| 196 | |
| 197 | /** |
| 198 | * cxl_h_validate_adapter_image - Validate the base image in the coherent |
| 199 | * platform facility. |
| 200 | */ |
| 201 | long cxl_h_validate_adapter_image(u64 unit_address, |
| 202 | u64 list_address, u64 num, |
| 203 | u64 *out); |
| 204 | #endif /* _HCALLS_H */ |