19d3b47b92
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
157 lines
3.8 KiB
C
157 lines
3.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2004-2010 Juli Mallett <jmallett@FreeBSD.org>
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* All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/smp.h>
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#include <sys/systm.h>
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#include <machine/hwfunc.h>
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#include <machine/md_var.h>
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#include <machine/smp.h>
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#include <mips/cavium/octeon_pcmap_regs.h>
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#include <contrib/octeon-sdk/cvmx.h>
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#include <mips/cavium/octeon_irq.h>
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unsigned octeon_ap_boot = ~0;
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void
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platform_ipi_send(int cpuid)
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{
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cvmx_write_csr(CVMX_CIU_MBOX_SETX(cpuid), 1);
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mips_wbflush();
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}
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void
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platform_ipi_clear(void)
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{
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uint64_t action;
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action = cvmx_read_csr(CVMX_CIU_MBOX_CLRX(PCPU_GET(cpuid)));
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KASSERT(action == 1, ("unexpected IPIs: %#jx", (uintmax_t)action));
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cvmx_write_csr(CVMX_CIU_MBOX_CLRX(PCPU_GET(cpuid)), action);
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}
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int
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platform_ipi_hardintr_num(void)
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{
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return (1);
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}
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int
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platform_ipi_softintr_num(void)
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{
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return (-1);
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}
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void
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platform_init_ap(int cpuid)
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{
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unsigned ciu_int_mask, clock_int_mask, ipi_int_mask;
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/*
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* Set the exception base.
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*/
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mips_wr_ebase(0x80000000);
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/*
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* Clear any pending IPIs.
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*/
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cvmx_write_csr(CVMX_CIU_MBOX_CLRX(cpuid), 0xffffffff);
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/*
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* Set up interrupts.
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*/
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octeon_ciu_reset();
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/*
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* Unmask the clock, ipi and ciu interrupts.
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*/
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ciu_int_mask = hard_int_mask(0);
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clock_int_mask = hard_int_mask(5);
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ipi_int_mask = hard_int_mask(platform_ipi_hardintr_num());
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set_intr_mask(ciu_int_mask | clock_int_mask | ipi_int_mask);
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mips_wbflush();
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}
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void
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platform_cpu_mask(cpuset_t *mask)
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{
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uint64_t core_mask = cvmx_sysinfo_get()->core_mask;
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uint64_t i, m;
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CPU_ZERO(mask);
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for (i = 0, m = 1 ; i < MAXCPU; i++, m <<= 1)
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if (core_mask & m)
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CPU_SET(i, mask);
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}
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struct cpu_group *
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platform_smp_topo(void)
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{
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return (smp_topo_none());
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}
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int
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platform_start_ap(int cpuid)
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{
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uint64_t cores_in_reset;
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/*
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* Release the core if it is in reset, and let it rev up a bit.
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* The real synchronization happens below via octeon_ap_boot.
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*/
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cores_in_reset = cvmx_read_csr(CVMX_CIU_PP_RST);
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if (cores_in_reset & (1ULL << cpuid)) {
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if (bootverbose)
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printf ("AP #%d still in reset\n", cpuid);
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cores_in_reset &= ~(1ULL << cpuid);
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cvmx_write_csr(CVMX_CIU_PP_RST, (uint64_t)(cores_in_reset));
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DELAY(2000); /* Give it a moment to start */
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}
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if (atomic_cmpset_32(&octeon_ap_boot, ~0, cpuid) == 0)
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return (-1);
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for (;;) {
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DELAY(1000);
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if (atomic_cmpset_32(&octeon_ap_boot, 0, ~0) != 0)
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return (0);
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printf("Waiting for cpu%d to start\n", cpuid);
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}
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}
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