linux/drivers/misc/sgi-gru/gruhandles.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *              GRU KERNEL MCS INSTRUCTIONS
 *
 *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
 */

#include <linux/kernel.h>
#include "gru.h"
#include "grulib.h"
#include "grutables.h"

/* 10 sec */
#include <linux/sync_core.h>
#include <asm/tsc.h>
#define GRU_OPERATION_TIMEOUT …
#define CLKS2NSEC(c) …

/* Extract the status field from a kernel handle */
#define GET_MSEG_HANDLE_STATUS(h) …

struct mcs_op_statistic mcs_op_statistics[mcsop_last];

static void update_mcs_stats(enum mcs_op op, unsigned long clks)
{ … }

static void start_instruction(void *h)
{ … }

static void report_instruction_timeout(void *h)
{ … }

static int wait_instruction_complete(void *h, enum mcs_op opc)
{ … }

int cch_allocate(struct gru_context_configuration_handle *cch)
{ … }

int cch_start(struct gru_context_configuration_handle *cch)
{ … }

int cch_interrupt(struct gru_context_configuration_handle *cch)
{ … }

int cch_deallocate(struct gru_context_configuration_handle *cch)
{ … }

int cch_interrupt_sync(struct gru_context_configuration_handle
				     *cch)
{ … }

int tgh_invalidate(struct gru_tlb_global_handle *tgh,
				 unsigned long vaddr, unsigned long vaddrmask,
				 int asid, int pagesize, int global, int n,
				 unsigned short ctxbitmap)
{ … }

int tfh_write_only(struct gru_tlb_fault_handle *tfh,
				  unsigned long paddr, int gaa,
				  unsigned long vaddr, int asid, int dirty,
				  int pagesize)
{ … }

void tfh_write_restart(struct gru_tlb_fault_handle *tfh,
				     unsigned long paddr, int gaa,
				     unsigned long vaddr, int asid, int dirty,
				     int pagesize)
{ … }

void tfh_user_polling_mode(struct gru_tlb_fault_handle *tfh)
{ … }

void tfh_exception(struct gru_tlb_fault_handle *tfh)
{ … }