1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Copyright 2015 IBM Corp. |
4 | */ |
5 | |
6 | #ifndef _HCALLS_H |
7 | #define _HCALLS_H |
8 | |
9 | #include <linux/types.h> |
10 | #include <asm/byteorder.h> |
11 | #include <asm/hvcall.h> |
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 */ |
201 | |