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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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77ae798f5b
Upto 4 Netlogic XLP SoCs can be connected over ICI links to form a coherent multi-node system. Each SoC has its own set of on-chip devices including PIC. To support this, add a per SoC stucture and use it for the PIC and SYS block addresses instead of using global variables. Signed-off-by: Jayachandran C <jchandra@broadcom.com> Patchwork: http://patchwork.linux-mips.org/patch/4469 Signed-off-by: John Crispin <blogic@openwrt.org>
86 lines
2.8 KiB
C
86 lines
2.8 KiB
C
/*
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* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
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* reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the NetLogic
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* license below:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/threads.h>
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#include <asm/asm.h>
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#include <asm/asm-offsets.h>
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#include <asm/mipsregs.h>
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#include <asm/addrspace.h>
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#include <asm/string.h>
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#include <asm/netlogic/haldefs.h>
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#include <asm/netlogic/common.h>
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#include <asm/netlogic/mips-extns.h>
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#include <asm/netlogic/xlr/iomap.h>
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#include <asm/netlogic/xlr/pic.h>
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int __cpuinit xlr_wakeup_secondary_cpus(void)
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{
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struct nlm_soc_info *nodep;
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unsigned int i, j, boot_cpu;
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/*
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* In case of RMI boot, hit with NMI to get the cores
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* from bootloader to linux code.
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*/
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nodep = nlm_get_node(0);
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boot_cpu = hard_smp_processor_id();
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nlm_set_nmi_handler(nlm_rmiboot_preboot);
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for (i = 0; i < NR_CPUS; i++) {
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if (i == boot_cpu || !cpumask_test_cpu(i, &nlm_cpumask))
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continue;
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nlm_pic_send_ipi(nodep->picbase, i, 1, 1); /* send NMI */
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}
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/* Fill up the coremask early */
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nodep->coremask = 1;
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for (i = 1; i < NLM_CORES_PER_NODE; i++) {
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for (j = 1000000; j > 0; j--) {
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if (nlm_cpu_ready[i * NLM_THREADS_PER_CORE])
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break;
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udelay(10);
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}
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if (j != 0)
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nodep->coremask |= (1u << i);
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else
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pr_err("Failed to wakeup core %d\n", i);
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}
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return 0;
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}
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