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Diffstat (limited to 'arch/arm/mvp/mvpkm/worldswitch.h')
| -rw-r--r-- | arch/arm/mvp/mvpkm/worldswitch.h | 381 |
1 files changed, 0 insertions, 381 deletions
diff --git a/arch/arm/mvp/mvpkm/worldswitch.h b/arch/arm/mvp/mvpkm/worldswitch.h deleted file mode 100644 index 785f2cd..0000000 --- a/arch/arm/mvp/mvpkm/worldswitch.h +++ /dev/null @@ -1,381 +0,0 @@ -/* - * Linux 2.6.32 and later Kernel module for VMware MVP Hypervisor Support - * - * Copyright (C) 2010-2012 VMware, Inc. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; see the file COPYING. If not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ -#line 5 - -/** - * @file - * - * @brief Definition of the world switch page - * - * Two pages are maintained to facilitate switching from the vmx to - * the monitor - a data and code page. The data page contains: - * - the necessary information about itself (its MPN, KVA, ...) - * - the saved register file of the other world (including some cp15 regs) - * - some information about the monitor's address space (the monVA member) - * that needed right after the w.s before any communication channels - * could have been established - * - a world switch related L2 table of the monitor -- this could be - * elsewhere. - * - * The code page contains: - * - the actual switching code that saves/restores the registers - * - * The world switch data page is mapped into the user, kernel, and the monitor - * address spaces. In case of the user and monitor spaces the global variable - * wsp points to the world switch page (in the vmx and the monitor - * respectively). The kernel address of the world switch page is saved on - * the page itself: wspHKVA. - * - * The kernel virtual address for both code and data pages is mapped into - * the monitor's space temporarily at the time of the actual switch. This is - * needed to provide a stable code and data page while the L1 page table - * base is changing. As the monitor does not need the world switch data page - * at its KVA for its internal operation, that map is severed right after the - * switching to the monitor and re-established before switching back. - */ -#ifndef _WORLDSWITCH_H -#define _WORLDSWITCH_H - -#define INCLUDE_ALLOW_MVPD -#define INCLUDE_ALLOW_VMX -#define INCLUDE_ALLOW_MODULE -#define INCLUDE_ALLOW_MONITOR -#define INCLUDE_ALLOW_GPL -#include "include_check.h" - -/** - * @brief Area for saving the monitor/kernel register files. - * - * The order of the registers in this structure was designed to - * facilitate the organization of the switching code. For example - * all Supervisor Mode registers are grouped together allowing the - * @code - * switch to svc, - * stm old svc regs - * ldm new svc regs - * @endcode - * code to work using a single base register for both the store and - * load area. - */ -#define MAX_REGISTER_SAVE_SIZE 464 - -#ifndef __ASSEMBLER__ -typedef struct { - uint32 kSPSR_svc; - uint32 kr13_svc; - uint32 kr14_svc; - uint32 mSPSR_svc; - uint32 mR13_svc; - uint32 mR14_svc; - - uint32 kSPSR_abt; - uint32 kr13_abt; - uint32 kr14_abt; - uint32 mSPSR_abt; - uint32 mR13_abt; - uint32 mR14_abt; - - uint32 kSPSR_und; - uint32 kr13_und; - uint32 kr14_und; - uint32 mSPSR_und; - uint32 mR13_und; - uint32 mR14_und; - - uint32 kSPSR_irq; - uint32 kr13_irq; - uint32 kr14_irq; - uint32 mSPSR_irq; - uint32 mR13_irq; - uint32 mR14_irq; - - uint32 kSPSR_fiq; - uint32 kr8_fiq; - uint32 kr9_fiq; - uint32 kr10_fiq; - uint32 kr11_fiq; - uint32 kr12_fiq; - uint32 kr13_fiq; - uint32 kr14_fiq; - uint32 mSPSR_fiq; - uint32 mR8_fiq; - uint32 mR9_fiq; - uint32 mR10_fiq; - uint32 mR11_fiq; - uint32 mR12_fiq; - uint32 mR13_fiq; - uint32 mR14_fiq; -} BankedRegisterSave; - -/** - * @brief Registers for monitor execution context. - */ -typedef struct { - uint32 mCPSR; - uint32 mR1; - uint32 mR4; - uint32 mR5; - uint32 mR6; - uint32 mR7; - uint32 mR8; - uint32 mR9; - uint32 mR10; - uint32 mR11; - uint32 mSP; - uint32 mLR; // =mPC -} MonitorRegisterSave; - -/** - * @brief LPV monitor register save/restore. - */ -typedef struct { - uint32 kR2; // =kCPSR - uint32 kR4; - uint32 kR5; - uint32 kR6; - uint32 kR7; - uint32 kR8; - uint32 kR9; - uint32 kR10; - uint32 kR11; - uint32 kR13; - uint32 kR14; // =kPC - - BankedRegisterSave bankedRegs; - - uint32 kCtrlReg; - uint32 kTTBR0; - uint32 kDACR; - uint32 kASID; - uint32 kTIDUserRW; - uint32 kTIDUserRO; - uint32 kTIDPrivRW; - uint32 kCSSELR; - uint32 kPMNCIntEn; - uint32 kPMNCCCCNT; - uint32 kPMNCOvFlag; - uint32 kOpEnabled; - uint32 mCtrlReg; - uint32 mTTBR0; - uint32 mASID; - uint32 mTIDUserRW; - uint32 mTIDUserRO; - uint32 mTIDPrivRW; - uint32 mCSSELR; - - MonitorRegisterSave monRegs; -} RegisterSaveLPV; - -/** - * @brief VE monitor register save/restore. - */ -typedef struct { - uint32 mHTTBR; - - uint32 kR3; - uint32 kR4; - uint32 kR5; - uint32 kR6; - uint32 kR7; - uint32 kR8; - uint32 kR9; - uint32 kR10; - uint32 kR11; - uint32 kR12; - uint32 kCPSR; - uint32 kRet; - - BankedRegisterSave bankedRegs; - - uint32 kCSSELR; - uint32 kCtrlReg; - uint32 kTTBR0[2]; - uint32 kTTBR1[2]; - uint32 kTTBRC; - uint32 kDACR; - uint32 kDFSR; - uint32 kIFSR; - uint32 kAuxDFSR; - uint32 kAuxIFSR; - uint32 kDFAR; - uint32 kIFAR; - uint32 kPAR[2]; - uint32 kPRRR; - uint32 kNMRR; - uint32 kASID; - uint32 kTIDUserRW; - uint32 kTIDUserRO; - uint32 kTIDPrivRW; - uint32 mCSSELR; - uint32 mCtrlReg; - uint32 mTTBR0[2]; - uint32 mTTBR1[2]; - uint32 mTTBRC; - uint32 mDACR; - uint32 mDFSR; - uint32 mIFSR; - uint32 mAuxDFSR; - uint32 mAuxIFSR; - uint32 mDFAR; - uint32 mIFAR; - uint32 mPAR[2]; - uint32 mPRRR; - uint32 mNMRR; - uint32 mASID; - uint32 mTIDUserRW; - uint32 mTIDUserRO; - uint32 mTIDPrivRW; - - uint32 mHCR; - uint32 mHDCR; - uint32 mHCPTR; - uint32 mHSTR; - uint32 mVTTBR[2]; - uint32 mVTCR; - - MonitorRegisterSave monRegs; -} RegisterSaveVE; - -typedef union { - unsigned char reserve_space[MAX_REGISTER_SAVE_SIZE]; - RegisterSaveLPV lpv; - RegisterSaveVE ve; -} RegisterSave; - -MY_ASSERTS(REGSAVE, - ASSERT_ON_COMPILE(sizeof(RegisterSave) == MAX_REGISTER_SAVE_SIZE); -) - -/** - * @brief Area for saving the monitor/kernel VFP state. - */ -typedef struct VFPSave { - uint32 fpexc, fpscr, fpinst, fpinst2, cpacr, fpexc_; - - uint64 fpregs[32]; // Hardware requires that this must be 8-byte (64-bit) - // aligned, however the SaveVFP/LoadVFP code does not - // align its pointer before accessing so we don't have - // an 'aligned(8)' attribute here. However, the - // alignment is checked via asserts in SetupMonitor() - // where it initializes the contents. - - // So if the preceding uint32's are changed and fpregs[] - // is no longer 8-byte aligned, the assert will fire. - // Then the uint32's will have to be fixed AND THE CODE - // in SaveVFP/LoadVFP will have to be CHANGED EQUALLY to - // compensate, as simply padding the uint32's (or - // sticking an aligned(8) attribute here) will leave the - // this structure mismatched with the code. - -} VFPSave __attribute__((aligned(8))); - // Keep the aligned(8) attribute here though so the - // VFPSave structures begin on an 8-byte boundary. - -typedef struct WorldSwitchPage WorldSwitchPage; -typedef void (SwitchToMonitor)(RegisterSave *regSave); -typedef void (SwitchToUser)(RegisterSave *regSaveEnd); - -#include "atomic.h" -#include "monva_common.h" -#include "mksck_shared.h" - -struct WorldSwitchPage { - uint32 mvpkmVersion; ///< The version number of mvpkm - - HKVA wspHKVA; ///< host kernel virtual address of this page - ARM_L1D wspKVAL1D; ///< The l1D entry at the above location - - SwitchToMonitor*switchToMonitor;///< entrypoint of the switching function - SwitchToUser *switchToUser; ///< ditto - - MonVA monVA; ///< monitor virtual address space description - union { - ARM_L2D monAttribL2D; ///< {S,TEX,CB} attributes for monitor mappings (LPV) - ARM_MemAttrNormal memAttr; ///< Normal memory attributes for monitor (VE) - }; - - MonitorType monType; ///< the type of the monitor. Used by mvpkm - _Bool allowInts; ///< true: monitor runs with ints enabled as much as possible (normal) - ///< false: monitor runs with ints blocked as much as possible (debug) - - struct { - uint64 switchedAt64; ///< approx time CP15 TSC was set to... - uint32 switchedAtTSC; ///< CP15 TSC value on entry from monitor - uint32 tscToRate64Mult; ///< multiplier to convert TSC_READ()s to our RATE64s - uint32 tscToRate64Shift; ///< shift to convert TSC_READ()s to our RATE64s - }; - - struct { - AtmUInt32 hostActions; ///< actions for monitor on instruction boundary - Mksck_VmId guestId; ///< vmId of the monitor page - }; - - struct { ///< Mksck attributes needed by Mksck_WspRelease() - uint32 critSecCount; ///< if >0 the monitor is in critical section - ///< and expects to regain control - _Bool isPageMapped[MKSCK_MAX_SHARES]; ///< host mksckPages known to the monitor - _Bool guestPageMapped;///< the guest Mksck page has been mapped in MVA space - uint32 isOpened; ///< bitfield indicating which mkscks - ///< are open on the guest's mksckPage. - /* Note that isOpened is per VM not per VCPU. Also note - * that this and other bitfields in the MksckPage structure - * limit the number of sockets to 32. - */ - }; - -#define WSP_PARAMS_SIZE 512 - uint8 params_[WSP_PARAMS_SIZE]; ///< opaque worldswitch call parameters - - RegisterSave regSave; ///< Save area for the worldswitch code below - VFPSave hostVFP; ///< Save areas for monitor/kernel VFP state - VFPSave monVFP; - -__attribute__((aligned(ARM_L2PT_COARSE_SIZE))) - ARM_L2D wspDoubleMap[ARM_L2PT_COARSE_ENTRIES]; ///< maps worldswitch page at its HKVA - uint8 secondHalfPadding[ARM_L2PT_COARSE_SIZE]; -}; - -/* - * These asserts duplicate the assert at the beginning of SetL1L2esc. - */ -MY_ASSERTS(WSP, - ASSERT_ON_COMPILE(offsetof(struct WorldSwitchPage, wspDoubleMap) % - ARM_L2PT_COARSE_SIZE == 0); -) - -extern void SaveVFP(VFPSave *); -extern void LoadVFP(VFPSave *); - -#define SWITCH_VFP_TO_MONITOR \ - do { \ - SaveVFP(&wsp->hostVFP); \ - LoadVFP(&wsp->monVFP); \ - } while(0) - -#define SWITCH_VFP_TO_HOST \ - do { \ - SaveVFP(&wsp->monVFP); \ - LoadVFP(&wsp->hostVFP); \ - } while(0) - -#endif /// __ASSEMBLER__ - -#define OFFSETOF_KR3_REGSAVE_VE_WSP 616 - -#endif /// _WORLDSWITCH_H |