Release 4.7 drivers/misc/cxl/hcalls.h
/*
* Copyright 2015 IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _HCALLS_H
#define _HCALLS_H
#include <linux/types.h>
#include <asm/byteorder.h>
#include <asm/hvcall.h>
#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 */
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