5f973ab51e
Determine master channel's message queue size based on the number of LWK CPUs so that all cores can communicate simultaneously during syscall channel initialization.
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/**
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* \file mikc.c
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* License details are found in the file LICENSE.
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* \brief
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* Initialize Inter-Kernel Communication (IKC)
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* \author Taku Shimosawa <shimosawa@is.s.u-tokyo.ac.jp> \par
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* Copyright (C) 2011 - 2012 Taku Shimosawa
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*/
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/*
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* HISTORY
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*/
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#include <ihk/ikc.h>
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#include <ihk/lock.h>
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#include <ikc/msg.h>
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#include <memory.h>
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#include <string.h>
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extern int num_processors;
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extern void arch_set_mikc_queue(void *r, void *w);
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ihk_ikc_ph_t arch_master_channel_packet_handler;
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int ihk_mc_ikc_init_first_local(struct ihk_ikc_channel_desc *channel,
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ihk_ikc_ph_t packet_handler)
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{
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struct ihk_ikc_queue_head *rq, *wq;
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size_t mikc_queue_pages;
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ihk_ikc_system_init(NULL);
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memset(channel, 0, sizeof(struct ihk_ikc_channel_desc));
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mikc_queue_pages = ((num_processors * MASTER_IKCQ_PKTSIZE)
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+ (PAGE_SIZE - 1)) / PAGE_SIZE;
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/* Place both sides in this side */
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rq = ihk_mc_alloc_pages(mikc_queue_pages, IHK_MC_AP_CRITICAL);
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wq = ihk_mc_alloc_pages(mikc_queue_pages, IHK_MC_AP_CRITICAL);
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ihk_ikc_init_queue(rq, 0, 0,
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mikc_queue_pages * PAGE_SIZE, MASTER_IKCQ_PKTSIZE);
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ihk_ikc_init_queue(wq, 0, 0,
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mikc_queue_pages * PAGE_SIZE, MASTER_IKCQ_PKTSIZE);
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arch_master_channel_packet_handler = packet_handler;
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ihk_ikc_init_desc(channel, IKC_OS_HOST, 0, rq, wq,
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ihk_ikc_master_channel_packet_handler, channel);
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ihk_ikc_enable_channel(channel);
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/* Set boot parameter */
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arch_set_mikc_queue(rq, wq);
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return 0;
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}
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