| 1 | /* $Id: initterm-r0drv-solaris.c 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Initialization & Termination, Ring-0 Driver, Solaris.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2022 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include "the-solaris-kernel.h"
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| 42 | #include "internal/iprt.h"
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| 43 |
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| 44 | #include <iprt/assert.h>
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| 45 | #include <iprt/errcore.h>
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| 46 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
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| 47 | # include <iprt/asm-amd64-x86.h>
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| 48 | #endif
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| 49 | #include "internal/initterm.h"
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| 50 |
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| 51 |
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| 52 | /*********************************************************************************************************************************
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| 53 | * Global Variables *
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| 54 | *********************************************************************************************************************************/
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| 55 | /** Kernel debug info handle. */
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| 56 | RTDBGKRNLINFO g_hKrnlDbgInfo;
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| 57 | /** Indicates that the spl routines (and therefore a bunch of other ones too)
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| 58 | * will set EFLAGS::IF and break code that disables interrupts. */
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| 59 | bool g_frtSolSplSetsEIF = false;
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| 60 | /** timeout_generic address. */
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| 61 | PFNSOL_timeout_generic g_pfnrtR0Sol_timeout_generic = NULL;
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| 62 | /** untimeout_generic address. */
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| 63 | PFNSOL_untimeout_generic g_pfnrtR0Sol_untimeout_generic = NULL;
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| 64 | /** cyclic_reprogram address. */
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| 65 | PFNSOL_cyclic_reprogram g_pfnrtR0Sol_cyclic_reprogram = NULL;
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| 66 | /** page_noreloc_supported address. */
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| 67 | PFNSOL_page_noreloc_supported g_pfnrtR0Sol_page_noreloc_supported = NULL;
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| 68 | /** Whether to use the kernel page freelist. */
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| 69 | bool g_frtSolUseKflt = false;
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| 70 | /** Whether we've completed R0 initialization. */
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| 71 | bool g_frtSolInitDone = false;
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| 72 | /** Whether to use old-style xc_call interface. */
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| 73 | bool g_frtSolOldIPI = false;
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| 74 | /** Whether to use old-style xc_call interface using one ulong_t as the CPU set
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| 75 | * representation. */
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| 76 | bool g_frtSolOldIPIUlong = false;
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| 77 | /** The xc_call callout table structure. */
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| 78 | RTR0FNSOLXCCALL g_rtSolXcCall;
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| 79 | /** Whether to use the old-style installctx()/removectx() routines. */
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| 80 | bool g_frtSolOldThreadCtx = false;
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| 81 | /** The thread-context hooks callout table structure. */
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| 82 | RTR0FNSOLTHREADCTX g_rtSolThreadCtx;
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| 83 | /** Thread preemption offset in the thread structure. */
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| 84 | size_t g_offrtSolThreadPreempt;
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| 85 | /** Thread ID offset in the thread structure. */
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| 86 | size_t g_offrtSolThreadId;
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| 87 | /** The interrupt (pinned) thread pointer offset in the thread structure. */
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| 88 | size_t g_offrtSolThreadIntrThread;
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| 89 | /** The dispatcher lock pointer offset in the thread structure. */
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| 90 | size_t g_offrtSolThreadLock;
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| 91 | /** The process pointer offset in the thread structure. */
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| 92 | size_t g_offrtSolThreadProc;
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| 93 | /** Host scheduler preemption offset. */
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| 94 | size_t g_offrtSolCpuPreempt;
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| 95 | /** Host scheduler force preemption offset. */
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| 96 | size_t g_offrtSolCpuForceKernelPreempt;
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| 97 | /** Whether to use the old-style map_addr() routine. */
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| 98 | bool g_frtSolOldMapAddr = false;
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| 99 | /** The map_addr() hooks callout table structure. */
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| 100 | RTR0FNSOLMAPADDR g_rtSolMapAddr;
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| 101 | /* Resolve using dl_lookup (remove if no longer relevant for supported S10 versions) */
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| 102 | extern void contig_free(void *addr, size_t size);
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| 103 | #pragma weak contig_free
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| 104 | /** contig_free address. */
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| 105 | PFNSOL_contig_free g_pfnrtR0Sol_contig_free = contig_free;
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| 106 |
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| 107 | DECLHIDDEN(int) rtR0InitNative(void)
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| 108 | {
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| 109 | /*
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| 110 | * IPRT has not yet been initialized at this point, so use Solaris' native cmn_err() for logging.
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| 111 | */
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| 112 | int rc = RTR0DbgKrnlInfoOpen(&g_hKrnlDbgInfo, 0 /* fFlags */);
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| 113 | if (RT_SUCCESS(rc))
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| 114 | {
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| 115 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
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| 116 | /*
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| 117 | * Detect whether spl*() is preserving the interrupt flag or not.
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| 118 | * This is a problem on S10.
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| 119 | */
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| 120 | RTCCUINTREG uOldFlags = ASMIntDisableFlags();
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| 121 | int iOld = splr(DISP_LEVEL);
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| 122 | if (ASMIntAreEnabled())
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| 123 | g_frtSolSplSetsEIF = true;
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| 124 | splx(iOld);
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| 125 | if (ASMIntAreEnabled())
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| 126 | g_frtSolSplSetsEIF = true;
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| 127 | ASMSetFlags(uOldFlags);
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| 128 | #else
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| 129 | /* PORTME: See if the amd64/x86 problem applies to this architecture. */
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| 130 | #endif
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| 131 | /*
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| 132 | * Mandatory: Preemption offsets.
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| 133 | */
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| 134 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, NULL, "cpu_t", "cpu_runrun", &g_offrtSolCpuPreempt);
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| 135 | if (RT_FAILURE(rc))
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| 136 | {
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| 137 | cmn_err(CE_NOTE, "Failed to find cpu_t::cpu_runrun!\n");
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| 138 | goto errorbail;
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| 139 | }
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| 140 |
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| 141 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, NULL, "cpu_t", "cpu_kprunrun", &g_offrtSolCpuForceKernelPreempt);
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| 142 | if (RT_FAILURE(rc))
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| 143 | {
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| 144 | cmn_err(CE_NOTE, "Failed to find cpu_t::cpu_kprunrun!\n");
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| 145 | goto errorbail;
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| 146 | }
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| 147 |
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| 148 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, NULL, "kthread_t", "t_preempt", &g_offrtSolThreadPreempt);
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| 149 | if (RT_FAILURE(rc))
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| 150 | {
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| 151 | cmn_err(CE_NOTE, "Failed to find kthread_t::t_preempt!\n");
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| 152 | goto errorbail;
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| 153 | }
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| 154 |
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| 155 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, NULL, "kthread_t", "t_did", &g_offrtSolThreadId);
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| 156 | if (RT_FAILURE(rc))
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| 157 | {
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| 158 | cmn_err(CE_NOTE, "Failed to find kthread_t::t_did!\n");
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| 159 | goto errorbail;
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| 160 | }
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| 161 |
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| 162 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, NULL, "kthread_t", "t_intr", &g_offrtSolThreadIntrThread);
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| 163 | if (RT_FAILURE(rc))
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| 164 | {
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| 165 | cmn_err(CE_NOTE, "Failed to find kthread_t::t_intr!\n");
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| 166 | goto errorbail;
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| 167 | }
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| 168 |
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| 169 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, NULL, "kthread_t", "t_lockp", &g_offrtSolThreadLock);
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| 170 | if (RT_FAILURE(rc))
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| 171 | {
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| 172 | cmn_err(CE_NOTE, "Failed to find kthread_t::t_lockp!\n");
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| 173 | goto errorbail;
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| 174 | }
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| 175 |
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| 176 | rc = RTR0DbgKrnlInfoQueryMember(g_hKrnlDbgInfo, NULL, "kthread_t", "t_procp", &g_offrtSolThreadProc);
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| 177 | if (RT_FAILURE(rc))
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| 178 | {
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| 179 | cmn_err(CE_NOTE, "Failed to find kthread_t::t_procp!\n");
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| 180 | goto errorbail;
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| 181 | }
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| 182 | cmn_err(CE_CONT, "!cpu_t::cpu_runrun @ 0x%lx (%ld)\n", g_offrtSolCpuPreempt, g_offrtSolCpuPreempt);
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| 183 | cmn_err(CE_CONT, "!cpu_t::cpu_kprunrun @ 0x%lx (%ld)\n", g_offrtSolCpuForceKernelPreempt, g_offrtSolCpuForceKernelPreempt);
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| 184 | cmn_err(CE_CONT, "!kthread_t::t_preempt @ 0x%lx (%ld)\n", g_offrtSolThreadPreempt, g_offrtSolThreadPreempt);
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| 185 | cmn_err(CE_CONT, "!kthread_t::t_did @ 0x%lx (%ld)\n", g_offrtSolThreadId, g_offrtSolThreadId);
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| 186 | cmn_err(CE_CONT, "!kthread_t::t_intr @ 0x%lx (%ld)\n", g_offrtSolThreadIntrThread, g_offrtSolThreadIntrThread);
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| 187 | cmn_err(CE_CONT, "!kthread_t::t_lockp @ 0x%lx (%ld)\n", g_offrtSolThreadLock, g_offrtSolThreadLock);
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| 188 | cmn_err(CE_CONT, "!kthread_t::t_procp @ 0x%lx (%ld)\n", g_offrtSolThreadProc, g_offrtSolThreadProc);
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| 189 |
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| 190 | /*
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| 191 | * Mandatory: CPU cross call infrastructure. Refer the-solaris-kernel.h for details.
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| 192 | */
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| 193 | rc = RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "xc_init_cpu", NULL /* ppvSymbol */);
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| 194 | if (RT_SUCCESS(rc))
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| 195 | {
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| 196 | if (ncpus > IPRT_SOL_NCPUS)
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| 197 | {
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| 198 | cmn_err(CE_NOTE, "rtR0InitNative: CPU count mismatch! ncpus=%d IPRT_SOL_NCPUS=%d\n", ncpus, IPRT_SOL_NCPUS);
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| 199 | rc = VERR_NOT_SUPPORTED;
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| 200 | goto errorbail;
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| 201 | }
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| 202 | g_rtSolXcCall.u.pfnSol_xc_call = (void *)xc_call;
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| 203 | }
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| 204 | else
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| 205 | {
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| 206 | g_frtSolOldIPI = true;
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| 207 | g_rtSolXcCall.u.pfnSol_xc_call_old = (void *)xc_call;
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| 208 | if (max_cpuid + 1 == sizeof(ulong_t) * 8)
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| 209 | {
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| 210 | g_frtSolOldIPIUlong = true;
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| 211 | g_rtSolXcCall.u.pfnSol_xc_call_old_ulong = (void *)xc_call;
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| 212 | }
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| 213 | else if (max_cpuid + 1 != IPRT_SOL_NCPUS)
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| 214 | {
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| 215 | cmn_err(CE_NOTE, "rtR0InitNative: cpuset_t size mismatch! max_cpuid=%d IPRT_SOL_NCPUS=%d\n", max_cpuid,
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| 216 | IPRT_SOL_NCPUS);
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| 217 | rc = VERR_NOT_SUPPORTED;
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| 218 | goto errorbail;
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| 219 | }
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| 220 | }
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| 221 |
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| 222 | /*
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| 223 | * Mandatory: Thread-context hooks.
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| 224 | */
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| 225 | rc = RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "exitctx", NULL /* ppvSymbol */);
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| 226 | if (RT_SUCCESS(rc))
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| 227 | {
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| 228 | g_rtSolThreadCtx.Install.pfnSol_installctx = (void *)installctx;
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| 229 | g_rtSolThreadCtx.Remove.pfnSol_removectx = (void *)removectx;
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| 230 | }
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| 231 | else
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| 232 | {
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| 233 | g_frtSolOldThreadCtx = true;
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| 234 | g_rtSolThreadCtx.Install.pfnSol_installctx_old = (void *)installctx;
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| 235 | g_rtSolThreadCtx.Remove.pfnSol_removectx_old = (void *)removectx;
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| 236 | }
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| 237 |
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| 238 | /*
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| 239 | * Mandatory: map_addr() hooks.
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| 240 | */
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| 241 | rc = RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "plat_map_align_amount", NULL /* ppvSymbol */);
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| 242 | if (RT_SUCCESS(rc))
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| 243 | {
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| 244 | g_rtSolMapAddr.u.pfnSol_map_addr = (void *)map_addr;
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| 245 | }
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| 246 | else
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| 247 | {
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| 248 | g_frtSolOldMapAddr = true;
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| 249 | g_rtSolMapAddr.u.pfnSol_map_addr_old = (void *)map_addr;
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| 250 | }
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| 251 |
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| 252 | /*
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| 253 | * Optional: Timeout hooks.
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| 254 | */
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| 255 | RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "timeout_generic",
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| 256 | (void **)&g_pfnrtR0Sol_timeout_generic);
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| 257 | RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "untimeout_generic",
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| 258 | (void **)&g_pfnrtR0Sol_untimeout_generic);
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| 259 | if ((g_pfnrtR0Sol_timeout_generic == NULL) != (g_pfnrtR0Sol_untimeout_generic == NULL))
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| 260 | {
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| 261 | static const char *s_apszFn[2] = { "timeout_generic", "untimeout_generic" };
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| 262 | bool iMissingFn = g_pfnrtR0Sol_timeout_generic == NULL;
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| 263 | cmn_err(CE_NOTE, "rtR0InitNative: Weird! Found %s but not %s!\n", s_apszFn[!iMissingFn], s_apszFn[iMissingFn]);
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| 264 | g_pfnrtR0Sol_timeout_generic = NULL;
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| 265 | g_pfnrtR0Sol_untimeout_generic = NULL;
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| 266 | }
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| 267 | RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "cyclic_reprogram",
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| 268 | (void **)&g_pfnrtR0Sol_cyclic_reprogram);
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| 269 |
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| 270 | /*
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| 271 | * Optional: Querying page no-relocation support.
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| 272 | */
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| 273 | RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /*pszModule */, "page_noreloc_supported",
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| 274 | (void **)&g_pfnrtR0Sol_page_noreloc_supported);
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| 275 |
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| 276 | /*
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| 277 | * Weak binding failures: contig_free
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| 278 | */
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| 279 | if (g_pfnrtR0Sol_contig_free == NULL)
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| 280 | {
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| 281 | rc = RTR0DbgKrnlInfoQuerySymbol(g_hKrnlDbgInfo, NULL /* pszModule */, "contig_free",
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| 282 | (void **)&g_pfnrtR0Sol_contig_free);
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| 283 | if (RT_FAILURE(rc))
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| 284 | {
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| 285 | cmn_err(CE_NOTE, "rtR0InitNative: failed to find contig_free!\n");
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| 286 | goto errorbail;
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| 287 | }
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| 288 | }
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| 289 |
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| 290 | g_frtSolInitDone = true;
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| 291 | return VINF_SUCCESS;
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| 292 | }
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| 293 | else
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| 294 | {
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| 295 | cmn_err(CE_NOTE, "RTR0DbgKrnlInfoOpen failed. rc=%d\n", rc);
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| 296 | return rc;
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| 297 | }
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| 298 |
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| 299 | errorbail:
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| 300 | RTR0DbgKrnlInfoRelease(g_hKrnlDbgInfo);
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| 301 | return rc;
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| 302 | }
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| 303 |
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| 304 |
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| 305 | DECLHIDDEN(void) rtR0TermNative(void)
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| 306 | {
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| 307 | RTR0DbgKrnlInfoRelease(g_hKrnlDbgInfo);
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| 308 | g_frtSolInitDone = false;
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| 309 | }
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| 310 |
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