/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright 2015 IBM Corp. */ #ifndef _HCALLS_H #define _HCALLS_H #include #include #include #include "cxl.h" #define SG_BUFFER_SIZE 4096 #define SG_MAX_ENTRIES 256 struct sg_list { u64 phys_addr; u64 len; }; /* * This is straight out of PAPR, but replacing some of the compound fields with * a single field, where they were identical to the register layout. * * The 'flags' parameter regroups the various bit-fields */ #define CXL_PE_CSRP_VALID (1ULL << 63) #define CXL_PE_PROBLEM_STATE (1ULL << 62) #define CXL_PE_SECONDARY_SEGMENT_TBL_SRCH (1ULL << 61) #define CXL_PE_TAGS_ACTIVE (1ULL << 60) #define CXL_PE_USER_STATE (1ULL << 59) #define CXL_PE_TRANSLATION_ENABLED (1ULL << 58) #define CXL_PE_64_BIT (1ULL << 57) #define CXL_PE_PRIVILEGED_PROCESS (1ULL << 56) #define CXL_PROCESS_ELEMENT_VERSION 1 struct cxl_process_element_hcall { __be64 version; __be64 flags; u8 reserved0[12]; __be32 pslVirtualIsn; u8 applicationVirtualIsnBitmap[256]; u8 reserved1[144]; struct cxl_process_element_common common; u8 reserved4[12]; } __packed; #define H_STATE_NORMAL 1 #define H_STATE_DISABLE 2 #define H_STATE_TEMP_UNAVAILABLE 3 #define H_STATE_PERM_UNAVAILABLE 4 /* NOTE: element must be a logical real address, and must be pinned */ long cxl_h_attach_process(u64 unit_address, struct cxl_process_element_hcall *element, u64 *process_token, u64 *mmio_addr, u64 *mmio_size); /** * cxl_h_detach_process - Detach a process element from a coherent * platform function. */ long cxl_h_detach_process(u64 unit_address, u64 process_token); /** * cxl_h_reset_afu - Perform a reset to the coherent platform function. */ long cxl_h_reset_afu(u64 unit_address); /** * cxl_h_suspend_process - Suspend a process from being executed * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when * process was attached. */ long cxl_h_suspend_process(u64 unit_address, u64 process_token); /** * cxl_h_resume_process - Resume a process to be executed * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when * process was attached. */ long cxl_h_resume_process(u64 unit_address, u64 process_token); /** * cxl_h_read_error_state - Reads the error state of the coherent * platform function. * R4 contains the error state */ long cxl_h_read_error_state(u64 unit_address, u64 *state); /** * cxl_h_get_afu_err - collect the AFU error buffer * Parameter1 = byte offset into error buffer to retrieve, valid values * are between 0 and (ibm,error-buffer-size - 1) * Parameter2 = 4K aligned real address of error buffer, to be filled in * Parameter3 = length of error buffer, valid values are 4K or less */ long cxl_h_get_afu_err(u64 unit_address, u64 offset, u64 buf_address, u64 len); /** * cxl_h_get_config - collect configuration record for the * coherent platform function * Parameter1 = # of configuration record to retrieve, valid values are * between 0 and (ibm,#config-records - 1) * Parameter2 = byte offset into configuration record to retrieve, * valid values are between 0 and (ibm,config-record-size - 1) * Parameter3 = 4K aligned real address of configuration record buffer, * to be filled in * Parameter4 = length of configuration buffer, valid values are 4K or less */ long cxl_h_get_config(u64 unit_address, u64 cr_num, u64 offset, u64 buf_address, u64 len); /** * cxl_h_terminate_process - Terminate the process before completion * Parameter1 = process-token as returned from H_ATTACH_CA_PROCESS when * process was attached. */ long cxl_h_terminate_process(u64 unit_address, u64 process_token); /** * cxl_h_collect_vpd - Collect VPD for the coherent platform function. * Parameter1 = # of VPD record to retrieve, valid values are between 0 * and (ibm,#config-records - 1). * Parameter2 = 4K naturally aligned real buffer containing block * list entries * Parameter3 = number of block list entries in the block list, valid * values are between 0 and 256 */ long cxl_h_collect_vpd(u64 unit_address, u64 record, u64 list_address, u64 num, u64 *out); /** * cxl_h_get_fn_error_interrupt - Read the function-wide error data based on an interrupt */ long cxl_h_get_fn_error_interrupt(u64 unit_address, u64 *reg); /** * cxl_h_ack_fn_error_interrupt - Acknowledge function-wide error data * based on an interrupt * Parameter1 = value to write to the function-wide error interrupt register */ long cxl_h_ack_fn_error_interrupt(u64 unit_address, u64 value); /** * cxl_h_get_error_log - Retrieve the Platform Log ID (PLID) of * an error log */ long cxl_h_get_error_log(u64 unit_address, u64 value); /** * cxl_h_collect_int_info - Collect interrupt info about a coherent * platform function after an interrupt occurred. */ long cxl_h_collect_int_info(u64 unit_address, u64 process_token, struct cxl_irq_info *info); /** * cxl_h_control_faults - Control the operation of a coherent platform * function after a fault occurs. * * Parameters * control-mask: value to control the faults * looks like PSL_TFC_An shifted >> 32 * reset-mask: mask to control reset of function faults * Set reset_mask = 1 to reset PSL errors */ long cxl_h_control_faults(u64 unit_address, u64 process_token, u64 control_mask, u64 reset_mask); /** * cxl_h_reset_adapter - Perform a reset to the coherent platform facility. */ long cxl_h_reset_adapter(u64 unit_address); /** * cxl_h_collect_vpd - Collect VPD for the coherent platform function. * Parameter1 = 4K naturally aligned real buffer containing block * list entries * Parameter2 = number of block list entries in the block list, valid * values are between 0 and 256 */ long cxl_h_collect_vpd_adapter(u64 unit_address, u64 list_address, u64 num, u64 *out); /** * cxl_h_download_adapter_image - Download the base image to the coherent * platform facility. */ long cxl_h_download_adapter_image(u64 unit_address, u64 list_address, u64 num, u64 *out); /** * cxl_h_validate_adapter_image - Validate the base image in the coherent * platform facility. */ long cxl_h_validate_adapter_image(u64 unit_address, u64 list_address, u64 num, u64 *out); #endif /* _HCALLS_H */