409 lines
10 KiB
C++
409 lines
10 KiB
C++
/*
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* \brief VirtualBox SUPLib supplements
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* \author Norman Feske
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* \date 2013-08-20
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*/
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/*
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* Copyright (C) 2013-2017 Genode Labs GmbH
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*
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* This file is distributed under the terms of the GNU General Public License
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* version 2.
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*/
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/* Genode includes */
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#include <base/attached_ram_dataspace.h>
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#include <trace/timestamp.h>
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/* Genode/Virtualbox includes */
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#include "sup.h"
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#include "vmm.h"
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/* VirtualBox includes */
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#include <iprt/ldr.h>
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#include <iprt/thread.h>
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#include <iprt/semaphore.h>
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#include <iprt/timer.h>
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#include <iprt/uint128.h>
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#include <VBox/err.h>
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static PFNRTTIMER rttimer_func = nullptr;
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static void * rttimer_obj = nullptr;
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enum {
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UPDATE_HZ = 1000,
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UPDATE_US = 1000 * 1000 / UPDATE_HZ,
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UPDATE_NS = UPDATE_US * 1000,
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};
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PSUPGLOBALINFOPAGE g_pSUPGlobalInfoPage;
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struct Periodic_gip
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{
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struct Thread
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{
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static DECLCALLBACK(int) fn(RTTHREAD, void *)
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{
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genode_update_tsc(Periodic_gip::update, UPDATE_US);
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return 0;
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}
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Thread()
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{
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int const rc = RTThreadCreate(nullptr, fn, this,
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0, RTTHREADTYPE_TIMER, 0, "periodic_gip");
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if (RT_FAILURE(rc)) {
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printf("Error: RTThreadCreate() %s\n", RTErrGetShort(rc));
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exit(-1);
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}
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}
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} thread;
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static void update()
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{
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/**
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* We're using rdtsc here since timer_session->elapsed_ms produces
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* instable results when the timer service is using the Genode PIC
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* driver as done for base-nova currently.
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*/
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Genode::uint64_t tsc_current = Genode::Trace::timestamp();
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/*
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* Convert tsc to nanoseconds.
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*
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* There is no 'uint128_t' type on x86_32, so we use the 128-bit type
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* and functions provided by VirtualBox.
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*
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* nanots128 = tsc_current * 1000*1000*1000 / genode_cpu_hz()
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*
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*/
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RTUINT128U nanots128;
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RTUInt128AssignU64(&nanots128, tsc_current);
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RTUINT128U multiplier;
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RTUInt128AssignU32(&multiplier, 1000*1000*1000);
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RTUInt128AssignMul(&nanots128, &multiplier);
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RTUINT128U divisor;
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RTUInt128AssignU64(&divisor, genode_cpu_hz());
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RTUInt128AssignDiv(&nanots128, &divisor);
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SUPGIPCPU *cpu = &g_pSUPGlobalInfoPage->aCPUs[0];
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/*
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* Transaction id must be incremented before and after update,
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* read struct SUPGIPCPU description for more details.
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*/
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ASMAtomicIncU32(&cpu->u32TransactionId);
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cpu->u64TSC = tsc_current;
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cpu->u64NanoTS = nanots128.s.Lo;
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/*
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* Transaction id must be incremented before and after update,
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* read struct SUPGIPCPU description for more details.
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*/
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ASMAtomicIncU32(&cpu->u32TransactionId);
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/* call the timer function of the RTTimerCreate call */
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if (rttimer_func)
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rttimer_func(nullptr, rttimer_obj, 0);
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}
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};
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struct Attached_gip : Genode::Attached_ram_dataspace
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{
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Attached_gip()
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: Attached_ram_dataspace(genode_env().ram(), genode_env().rm(), PAGE_SIZE)
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{
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g_pSUPGlobalInfoPage = local_addr<SUPGLOBALINFOPAGE>();
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/* checked by TMR3Init */
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g_pSUPGlobalInfoPage->u32Version = SUPGLOBALINFOPAGE_VERSION;
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g_pSUPGlobalInfoPage->u32Magic = SUPGLOBALINFOPAGE_MAGIC;
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g_pSUPGlobalInfoPage->u32Mode = SUPGIPMODE_SYNC_TSC;
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g_pSUPGlobalInfoPage->cCpus = 1;
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g_pSUPGlobalInfoPage->cPages = 1;
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g_pSUPGlobalInfoPage->u32UpdateHz = UPDATE_HZ;
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g_pSUPGlobalInfoPage->u32UpdateIntervalNS = UPDATE_NS;
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g_pSUPGlobalInfoPage->cOnlineCpus = 0;
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g_pSUPGlobalInfoPage->cPresentCpus = 0;
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g_pSUPGlobalInfoPage->cPossibleCpus = 0;
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g_pSUPGlobalInfoPage->idCpuMax = 0;
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g_pSUPGlobalInfoPage->u64CpuHz = genode_cpu_hz();
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/* evaluated by rtTimeNanoTSInternalRediscover in Runtime/common/time/timesup.cpp */
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g_pSUPGlobalInfoPage->fGetGipCpu = SUPGIPGETCPU_APIC_ID;
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SUPGIPCPU *cpu = &g_pSUPGlobalInfoPage->aCPUs[0];
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cpu->u32TransactionId = 0;
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cpu->u32UpdateIntervalTSC = genode_cpu_hz() / UPDATE_HZ;
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cpu->u64NanoTS = 0ULL;
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cpu->u64TSC = 0ULL;
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cpu->u64CpuHz = genode_cpu_hz();
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cpu->cErrors = 0;
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cpu->iTSCHistoryHead = 0;
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cpu->u32PrevUpdateIntervalNS = UPDATE_NS;
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cpu->enmState = SUPGIPCPUSTATE_ONLINE;
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cpu->idCpu = 0;
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cpu->iCpuSet = 0;
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cpu->idApic = 0;
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/* schedule periodic call of GIP update function */
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static Periodic_gip periodic_gip { };
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}
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};
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int RTTimerCreate(PRTTIMER *pptimer, unsigned ms, PFNRTTIMER func, void *obj)
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{
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if (pptimer)
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*pptimer = NULL;
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/* used solely at one place in TM.cpp */
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Assert(!rttimer_func);
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/*
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* Ignore (10) ms which is too high for audio. Instead the callback
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* handler will run at UPDATE_HZ rate.
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*/
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rttimer_func = func;
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rttimer_obj = obj;
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return VINF_SUCCESS;
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}
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int RTTimerDestroy(PRTTIMER)
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{
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rttimer_obj = nullptr;
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rttimer_func = nullptr;
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return VINF_SUCCESS;
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}
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int SUPR3Init(PSUPDRVSESSION *ppSession)
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{
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static Attached_gip gip;
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return VINF_SUCCESS;
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}
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SUPR3DECL(SUPPAGINGMODE) SUPR3GetPagingMode(void)
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{
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return sizeof(void *) == 4 ? SUPPAGINGMODE_32_BIT : SUPPAGINGMODE_AMD64_NX;
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}
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int SUPR3Term(bool) { return VINF_SUCCESS; }
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int SUPR3GipGetPhys(PRTHCPHYS pHCPhys)
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{
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/*
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* Return VMM-local address as physical address. This address is
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* then fed to MMR3HyperMapHCPhys. (TMR3Init)
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*/
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*pHCPhys = (RTHCPHYS)g_pSUPGlobalInfoPage;
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return VINF_SUCCESS;
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}
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int SUPR3HardenedLdrLoadAppPriv(const char *pszFilename, PRTLDRMOD phLdrMod,
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uint32_t fFlags, PRTERRINFO pErrInfo)
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{
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return RTLdrLoad(pszFilename, phLdrMod);
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}
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SUPR3DECL(int) SUPR3PageFreeEx(void *pvPages, size_t cPages)
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{
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Genode::log(__func__, " pvPages=", pvPages, " pages=", cPages);
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return VINF_SUCCESS;
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}
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int SUPR3QueryMicrocodeRev(uint32_t *puMicrocodeRev)
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{
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return E_FAIL;
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}
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uint32_t SUPSemEventMultiGetResolution(PSUPDRVSESSION)
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{
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return 100000*10; /* called by 'vmR3HaltGlobal1Init' */
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}
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int SUPSemEventCreate(PSUPDRVSESSION pSession, PSUPSEMEVENT phEvent)
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{
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return RTSemEventCreate((PRTSEMEVENT)phEvent);
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}
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int SUPSemEventClose(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent)
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{
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Assert (hEvent);
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return RTSemEventDestroy((RTSEMEVENT)hEvent);
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}
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int SUPSemEventSignal(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent)
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{
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Assert (hEvent);
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return RTSemEventSignal((RTSEMEVENT)hEvent);
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}
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int SUPSemEventWaitNoResume(PSUPDRVSESSION pSession, SUPSEMEVENT hEvent,
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uint32_t cMillies)
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{
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Assert (hEvent);
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return RTSemEventWaitNoResume((RTSEMEVENT)hEvent, cMillies);
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}
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int SUPSemEventMultiCreate(PSUPDRVSESSION, PSUPSEMEVENTMULTI phEventMulti)
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{
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RTSEMEVENTMULTI sem;
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/*
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* Input validation.
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*/
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AssertPtrReturn(phEventMulti, VERR_INVALID_POINTER);
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/*
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* Create the event semaphore object.
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*/
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int rc = RTSemEventMultiCreate(&sem);
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static_assert(sizeof(sem) == sizeof(*phEventMulti), "oi");
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*phEventMulti = reinterpret_cast<SUPSEMEVENTMULTI>(sem);
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return rc;
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}
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int SUPSemEventMultiWaitNoResume(PSUPDRVSESSION, SUPSEMEVENTMULTI event,
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uint32_t ms)
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{
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RTSEMEVENTMULTI const rtevent = reinterpret_cast<RTSEMEVENTMULTI>(event);
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return RTSemEventMultiWait(rtevent, ms);
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}
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int SUPSemEventMultiSignal(PSUPDRVSESSION, SUPSEMEVENTMULTI event) {
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return RTSemEventMultiSignal(reinterpret_cast<RTSEMEVENTMULTI>(event)); }
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int SUPSemEventMultiReset(PSUPDRVSESSION, SUPSEMEVENTMULTI event) {
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return RTSemEventMultiReset(reinterpret_cast<RTSEMEVENTMULTI>(event)); }
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int SUPSemEventMultiClose(PSUPDRVSESSION, SUPSEMEVENTMULTI event) {
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return RTSemEventMultiDestroy(reinterpret_cast<RTSEMEVENTMULTI>(event)); }
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int SUPR3CallVMMR0(PVMR0 pVMR0, VMCPUID idCpu, unsigned uOperation,
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void *pvArg)
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{
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if (uOperation == VMMR0_DO_CALL_HYPERVISOR) {
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Genode::log(__func__, ": VMMR0_DO_CALL_HYPERVISOR - doing nothing");
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return VINF_SUCCESS;
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}
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if (uOperation == VMMR0_DO_VMMR0_TERM) {
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Genode::log(__func__, ": VMMR0_DO_VMMR0_TERM - doing nothing");
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return VINF_SUCCESS;
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}
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if (uOperation == VMMR0_DO_GVMM_DESTROY_VM) {
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Genode::log(__func__, ": VMMR0_DO_GVMM_DESTROY_VM - doing nothing");
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return VINF_SUCCESS;
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}
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AssertMsg(uOperation != VMMR0_DO_VMMR0_TERM &&
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uOperation != VMMR0_DO_CALL_HYPERVISOR &&
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uOperation != VMMR0_DO_GVMM_DESTROY_VM,
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("SUPR3CallVMMR0: unhandled uOperation %d", uOperation));
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return VERR_GENERAL_FAILURE;
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}
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void genode_VMMR0_DO_GVMM_CREATE_VM(PSUPVMMR0REQHDR pReqHdr)
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{
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GVMMCREATEVMREQ &req = reinterpret_cast<GVMMCREATEVMREQ &>(*pReqHdr);
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size_t const cCpus = req.cCpus;
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/*
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* Allocate and initialize VM struct
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*
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* The VM struct is followed by the variable-sizedA array of VMCPU
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* objects. 'RT_UOFFSETOF' is used to determine the size including
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* the VMCPU array.
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*
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* VM struct must be page-aligned, which is checked at least in
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* PDMR3CritSectGetNop().
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*/
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size_t const cbVM = RT_UOFFSETOF(VM, aCpus[cCpus]);
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static Genode::Attached_ram_dataspace vm(genode_env().ram(),
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genode_env().rm(),
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cbVM);
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Assert (vm.size() >= cbVM);
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VM *pVM = vm.local_addr<VM>();
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Genode::memset(pVM, 0, cbVM);
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/*
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* On Genode, VMMR0 and VMMR3 share a single address space. Hence, the
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* same pVM pointer is valid as pVMR0 and pVMR3.
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*/
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pVM->enmVMState = VMSTATE_CREATING;
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pVM->pVMR0 = (RTHCUINTPTR)pVM;
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pVM->pVMRC = (RTGCUINTPTR)pVM;
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pVM->pSession = req.pSession;
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pVM->cbSelf = cbVM;
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pVM->cCpus = cCpus;
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pVM->uCpuExecutionCap = 100; /* expected by 'vmR3CreateU()' */
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pVM->offVMCPU = RT_UOFFSETOF(VM, aCpus);
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for (uint32_t i = 0; i < cCpus; i++) {
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pVM->aCpus[i].pVMR0 = pVM->pVMR0;
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pVM->aCpus[i].pVMR3 = pVM;
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pVM->aCpus[i].idHostCpu = NIL_RTCPUID;
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pVM->aCpus[i].hNativeThreadR0 = NIL_RTNATIVETHREAD;
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}
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pVM->aCpus[0].hNativeThreadR0 = RTThreadNativeSelf();
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/* out parameters of the request */
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req.pVMR0 = pVM->pVMR0;
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req.pVMR3 = pVM;
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}
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void genode_VMMR0_DO_GVMM_REGISTER_VMCPU(PVMR0 pVMR0, VMCPUID idCpu)
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{
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PVM pVM = reinterpret_cast<PVM>(pVMR0);
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pVM->aCpus[idCpu].hNativeThreadR0 = RTThreadNativeSelf();
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}
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HRESULT genode_check_memory_config(ComObjPtr<Machine>,
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size_t const memory_vmm)
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{
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/* Request max available memory */
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size_t const memory_available = genode_env().pd().avail_ram().value;
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if (memory_vmm <= memory_available)
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return S_OK;
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Genode::error("Available memory too low to start the VM - available: ",
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memory_available, " MB < ", memory_vmm, " MB requested");
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return E_FAIL;
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}
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