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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
444c4ba4 CL |
2 | /* |
3 | * Copyright 2015 IBM Corp. | |
444c4ba4 CL |
4 | */ |
5 | ||
6 | #ifndef _HCALLS_H | |
7 | #define _HCALLS_H | |
8 | ||
9 | #include <linux/types.h> | |
10 | #include <asm/byteorder.h> | |
14baf4d9 | 11 | #include <asm/hvcall.h> |
444c4ba4 CL |
12 | #include "cxl.h" |
13 | ||
14 | #define SG_BUFFER_SIZE 4096 | |
15 | #define SG_MAX_ENTRIES 256 | |
16 | ||
17 | struct sg_list { | |
18 | u64 phys_addr; | |
19 | u64 len; | |
20 | }; | |
21 | ||
22 | /* | |
23 | * This is straight out of PAPR, but replacing some of the compound fields with | |
24 | * a single field, where they were identical to the register layout. | |
25 | * | |
26 | * The 'flags' parameter regroups the various bit-fields | |
27 | */ | |
28 | #define CXL_PE_CSRP_VALID (1ULL << 63) | |
29 | #define CXL_PE_PROBLEM_STATE (1ULL << 62) | |
30 | #define CXL_PE_SECONDARY_SEGMENT_TBL_SRCH (1ULL << 61) | |
31 | #define CXL_PE_TAGS_ACTIVE (1ULL << 60) | |
32 | #define CXL_PE_USER_STATE (1ULL << 59) | |
33 | #define CXL_PE_TRANSLATION_ENABLED (1ULL << 58) | |
34 | #define CXL_PE_64_BIT (1ULL << 57) | |
35 | #define CXL_PE_PRIVILEGED_PROCESS (1ULL << 56) | |
36 | ||
37 | #define CXL_PROCESS_ELEMENT_VERSION 1 | |
38 | struct cxl_process_element_hcall { | |
39 | __be64 version; | |
40 | __be64 flags; | |
41 | u8 reserved0[12]; | |
42 | __be32 pslVirtualIsn; | |
43 | u8 applicationVirtualIsnBitmap[256]; | |
44 | u8 reserved1[144]; | |
45 | struct cxl_process_element_common common; | |
46 | u8 reserved4[12]; | |
47 | } __packed; | |
48 | ||
49 | #define H_STATE_NORMAL 1 | |
50 | #define H_STATE_DISABLE 2 | |
51 | #define H_STATE_TEMP_UNAVAILABLE 3 | |
52 | #define H_STATE_PERM_UNAVAILABLE 4 | |
53 | ||
54 | /* NOTE: element must be a logical real address, and must be pinned */ | |
55 | long cxl_h_attach_process(u64 unit_address, struct cxl_process_element_hcall *element, | |
56 | u64 *process_token, u64 *mmio_addr, u64 *mmio_size); | |
57 | ||
58 | /** | |
59 | * cxl_h_detach_process - Detach a process element from a coherent | |
60 | * platform function. | |
61 | */ | |
62 | long cxl_h_detach_process(u64 unit_address, u64 process_token); | |
63 | ||
64 | /** | |
65 | * cxl_h_reset_afu - Perform a reset to the coherent platform function. | |
66 | */ | |
67 | long cxl_h_reset_afu(u64 unit_address); | |
68 | ||
69 | /** | |
70 | * cxl_h_suspend_process - Suspend a process from being executed | |
71 | * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when | |
72 | * process was attached. | |
73 | */ | |
74 | long cxl_h_suspend_process(u64 unit_address, u64 process_token); | |
75 | ||
76 | /** | |
77 | * cxl_h_resume_process - Resume a process to be executed | |
78 | * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when | |
79 | * process was attached. | |
80 | */ | |
81 | long cxl_h_resume_process(u64 unit_address, u64 process_token); | |
82 | ||
83 | /** | |
84 | * cxl_h_read_error_state - Reads the error state of the coherent | |
85 | * platform function. | |
86 | * R4 contains the error state | |
87 | */ | |
88 | long cxl_h_read_error_state(u64 unit_address, u64 *state); | |
89 | ||
90 | /** | |
91 | * cxl_h_get_afu_err - collect the AFU error buffer | |
92 | * Parameter1 = byte offset into error buffer to retrieve, valid values | |
93 | * are between 0 and (ibm,error-buffer-size - 1) | |
94 | * Parameter2 = 4K aligned real address of error buffer, to be filled in | |
95 | * Parameter3 = length of error buffer, valid values are 4K or less | |
96 | */ | |
97 | long cxl_h_get_afu_err(u64 unit_address, u64 offset, u64 buf_address, u64 len); | |
98 | ||
99 | /** | |
100 | * cxl_h_get_config - collect configuration record for the | |
101 | * coherent platform function | |
102 | * Parameter1 = # of configuration record to retrieve, valid values are | |
103 | * between 0 and (ibm,#config-records - 1) | |
104 | * Parameter2 = byte offset into configuration record to retrieve, | |
105 | * valid values are between 0 and (ibm,config-record-size - 1) | |
106 | * Parameter3 = 4K aligned real address of configuration record buffer, | |
107 | * to be filled in | |
108 | * Parameter4 = length of configuration buffer, valid values are 4K or less | |
109 | */ | |
110 | long cxl_h_get_config(u64 unit_address, u64 cr_num, u64 offset, | |
111 | u64 buf_address, u64 len); | |
112 | ||
113 | /** | |
114 | * cxl_h_terminate_process - Terminate the process before completion | |
115 | * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when | |
116 | * process was attached. | |
117 | */ | |
118 | long cxl_h_terminate_process(u64 unit_address, u64 process_token); | |
119 | ||
120 | /** | |
121 | * cxl_h_collect_vpd - Collect VPD for the coherent platform function. | |
122 | * Parameter1 = # of VPD record to retrieve, valid values are between 0 | |
123 | * and (ibm,#config-records - 1). | |
124 | * Parameter2 = 4K naturally aligned real buffer containing block | |
125 | * list entries | |
126 | * Parameter3 = number of block list entries in the block list, valid | |
127 | * values are between 0 and 256 | |
128 | */ | |
129 | long cxl_h_collect_vpd(u64 unit_address, u64 record, u64 list_address, | |
130 | u64 num, u64 *out); | |
131 | ||
132 | /** | |
133 | * cxl_h_get_fn_error_interrupt - Read the function-wide error data based on an interrupt | |
134 | */ | |
135 | long cxl_h_get_fn_error_interrupt(u64 unit_address, u64 *reg); | |
136 | ||
137 | /** | |
138 | * cxl_h_ack_fn_error_interrupt - Acknowledge function-wide error data | |
139 | * based on an interrupt | |
140 | * Parameter1 = value to write to the function-wide error interrupt register | |
141 | */ | |
142 | long cxl_h_ack_fn_error_interrupt(u64 unit_address, u64 value); | |
143 | ||
144 | /** | |
145 | * cxl_h_get_error_log - Retrieve the Platform Log ID (PLID) of | |
146 | * an error log | |
147 | */ | |
148 | long cxl_h_get_error_log(u64 unit_address, u64 value); | |
149 | ||
150 | /** | |
151 | * cxl_h_collect_int_info - Collect interrupt info about a coherent | |
152 | * platform function after an interrupt occurred. | |
153 | */ | |
154 | long cxl_h_collect_int_info(u64 unit_address, u64 process_token, | |
155 | struct cxl_irq_info *info); | |
156 | ||
157 | /** | |
158 | * cxl_h_control_faults - Control the operation of a coherent platform | |
159 | * function after a fault occurs. | |
160 | * | |
161 | * Parameters | |
162 | * control-mask: value to control the faults | |
163 | * looks like PSL_TFC_An shifted >> 32 | |
164 | * reset-mask: mask to control reset of function faults | |
165 | * Set reset_mask = 1 to reset PSL errors | |
166 | */ | |
167 | long cxl_h_control_faults(u64 unit_address, u64 process_token, | |
168 | u64 control_mask, u64 reset_mask); | |
169 | ||
170 | /** | |
171 | * cxl_h_reset_adapter - Perform a reset to the coherent platform facility. | |
172 | */ | |
173 | long cxl_h_reset_adapter(u64 unit_address); | |
174 | ||
175 | /** | |
176 | * cxl_h_collect_vpd - Collect VPD for the coherent platform function. | |
177 | * Parameter1 = 4K naturally aligned real buffer containing block | |
178 | * list entries | |
179 | * Parameter2 = number of block list entries in the block list, valid | |
180 | * values are between 0 and 256 | |
181 | */ | |
182 | long cxl_h_collect_vpd_adapter(u64 unit_address, u64 list_address, | |
183 | u64 num, u64 *out); | |
184 | ||
185 | /** | |
186 | * cxl_h_download_adapter_image - Download the base image to the coherent | |
187 | * platform facility. | |
188 | */ | |
189 | long cxl_h_download_adapter_image(u64 unit_address, | |
190 | u64 list_address, u64 num, | |
191 | u64 *out); | |
192 | ||
193 | /** | |
194 | * cxl_h_validate_adapter_image - Validate the base image in the coherent | |
195 | * platform facility. | |
196 | */ | |
197 | long cxl_h_validate_adapter_image(u64 unit_address, | |
198 | u64 list_address, u64 num, | |
199 | u64 *out); | |
200 | #endif /* _HCALLS_H */ |