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