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/* -*- Mode:C; c-basic-offset:4; tab-width:4; indent-tabs-mode:nil -*- */
/*
* vmx_process.c: handling VMX architecture-related VM exits
* Copyright (c) 2005, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*
* Xiaoyan Feng (Fleming Feng) <fleming.feng@intel.com>
* Xuefei Xu (Anthony Xu) (Anthony.xu@intel.com)
*/
#include <xen/config.h>
#include <xen/lib.h>
#include <xen/errno.h>
#include <xen/sched.h>
#include <xen/smp.h>
#include <asm/ptrace.h>
#include <xen/delay.h>
#include <linux/efi.h> /* FOR EFI_UNIMPLEMENTED */
#include <asm/sal.h> /* FOR struct ia64_sal_retval */
#include <asm/system.h>
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/desc.h>
//#include <asm/ldt.h>
#include <xen/irq.h>
#include <xen/event.h>
#include <asm/regionreg.h>
#include <asm/privop.h>
#include <asm/ia64_int.h>
#include <asm/hpsim_ssc.h>
#include <asm/dom_fw.h>
#include <asm/vmx_vcpu.h>
#include <asm/kregs.h>
#include <asm/vmx_mm_def.h>
/* reset all PSR field to 0, except up,mfl,mfh,pk,dt,rt,mc,it */
#define INITIAL_PSR_VALUE_AT_INTERRUPTION 0x0000001808028034
extern struct ia64_sal_retval pal_emulator_static(UINT64);
extern struct ia64_sal_retval sal_emulator(UINT64,UINT64,UINT64,UINT64,UINT64,UINT64,UINT64,UINT64);
extern void rnat_consumption (VCPU *vcpu);
IA64FAULT
vmx_ia64_handle_break (unsigned long ifa, struct pt_regs *regs, unsigned long isr, unsigned long iim)
{
static int first_time = 1;
struct domain *d = (struct domain *) current->domain;
struct vcpu *v = (struct domain *) current;
extern unsigned long running_on_sim;
unsigned long i, sal_param[8];
#if 0
if (first_time) {
if (platform_is_hp_ski()) running_on_sim = 1;
else running_on_sim = 0;
first_time = 0;
}
if (iim == 0x80001 || iim == 0x80002) { //FIXME: don't hardcode constant
if (running_on_sim) do_ssc(vcpu_get_gr(current,36), regs);
else do_ssc(vcpu_get_gr(current,36), regs);
}
#endif
if (iim == d->arch.breakimm) {
struct ia64_sal_retval x;
switch (regs->r2) {
case FW_HYPERCALL_PAL_CALL:
//printf("*** PAL hypercall: index=%d\n",regs->r28);
//FIXME: This should call a C routine
x = pal_emulator_static(VMX_VPD(v, vgr[12]));
regs->r8 = x.status; regs->r9 = x.v0;
regs->r10 = x.v1; regs->r11 = x.v2;
#if 0
if (regs->r8)
printk("Failed vpal emulation, with index:0x%lx\n",
VMX_VPD(v, vgr[12]));
#endif
break;
case FW_HYPERCALL_SAL_CALL:
for (i = 0; i < 8; i++)
vmx_vcpu_get_gr(v, 32+i, &sal_param[i]);
x = sal_emulator(sal_param[0], sal_param[1],
sal_param[2], sal_param[3],
sal_param[4], sal_param[5],
sal_param[6], sal_param[7]);
regs->r8 = x.status; regs->r9 = x.v0;
regs->r10 = x.v1; regs->r11 = x.v2;
#if 0
if (regs->r8)
printk("Failed vsal emulation, with index:0x%lx\n",
sal_param[0]);
#endif
break;
case FW_HYPERCALL_EFI_RESET_SYSTEM:
printf("efi.reset_system called ");
if (current->domain == dom0) {
printf("(by dom0)\n ");
(*efi.reset_system)(EFI_RESET_WARM,0,0,NULL);
}
printf("(not supported for non-0 domain)\n");
regs->r8 = EFI_UNSUPPORTED;
break;
case FW_HYPERCALL_EFI_GET_TIME:
{
unsigned long *tv, *tc;
fooefi();
vmx_vcpu_get_gr(v, 32, &tv);
vmx_vcpu_get_gr(v, 33, &tc);
printf("efi_get_time(%p,%p) called...",tv,tc);
tv = __va(translate_domain_mpaddr(tv));
if (tc) tc = __va(translate_domain_mpaddr(tc));
regs->r8 = (*efi.get_time)(tv,tc);
printf("and returns %lx\n",regs->r8);
}
break;
case FW_HYPERCALL_EFI_SET_TIME:
case FW_HYPERCALL_EFI_GET_WAKEUP_TIME:
case FW_HYPERCALL_EFI_SET_WAKEUP_TIME:
// FIXME: need fixes in efi.h from 2.6.9
case FW_HYPERCALL_EFI_SET_VIRTUAL_ADDRESS_MAP:
// FIXME: WARNING!! IF THIS EVER GETS IMPLEMENTED
// SOME OF THE OTHER EFI EMULATIONS WILL CHANGE AS
// POINTER ARGUMENTS WILL BE VIRTUAL!!
case FW_HYPERCALL_EFI_GET_VARIABLE:
// FIXME: need fixes in efi.h from 2.6.9
case FW_HYPERCALL_EFI_GET_NEXT_VARIABLE:
case FW_HYPERCALL_EFI_SET_VARIABLE:
case FW_HYPERCALL_EFI_GET_NEXT_HIGH_MONO_COUNT:
// FIXME: need fixes in efi.h from 2.6.9
regs->r8 = EFI_UNSUPPORTED;
break;
}
#if 0
if (regs->r8)
printk("Failed vgfw emulation, with index:0x%lx\n",
regs->r2);
#endif
vmx_vcpu_increment_iip(current);
} else
vmx_reflect_interruption(ifa,isr,iim,11);
}
static UINT64 vec2off[68] = {0x0,0x400,0x800,0xc00,0x1000, 0x1400,0x1800,
0x1c00,0x2000,0x2400,0x2800,0x2c00,0x3000,0x3400,0x3800,0x3c00,0x4000,
0x4400,0x4800,0x4c00,0x5000,0x5100,0x5200,0x5300,0x5400,0x5500,0x5600,
0x5700,0x5800,0x5900,0x5a00,0x5b00,0x5c00,0x5d00,0x5e00,0x5f00,0x6000,
0x6100,0x6200,0x6300,0x6400,0x6500,0x6600,0x6700,0x6800,0x6900,0x6a00,
0x6b00,0x6c00,0x6d00,0x6e00,0x6f00,0x7000,0x7100,0x7200,0x7300,0x7400,
0x7500,0x7600,0x7700,0x7800,0x7900,0x7a00,0x7b00,0x7c00,0x7d00,0x7e00,
0x7f00,
};
void vmx_reflect_interruption(UINT64 ifa,UINT64 isr,UINT64 iim,
UINT64 vector)
{
VCPU *vcpu = current;
REGS *regs=vcpu_regs(vcpu);
UINT64 viha,vpsr = vmx_vcpu_get_psr(vcpu);
if(!(vpsr&IA64_PSR_IC)&&(vector!=5)){
panic("Guest nested fault!");
}
VPD_CR(vcpu,isr)=isr;
VPD_CR(vcpu,iipa) = regs->cr_iip;
vector=vec2off[vector];
if (vector == IA64_BREAK_VECTOR || vector == IA64_SPECULATION_VECTOR)
VPD_CR(vcpu,iim) = iim;
else {
set_ifa_itir_iha(vcpu,ifa,1,1,1);
}
inject_guest_interruption(vcpu, vector);
}
// ONLY gets called from ia64_leave_kernel
// ONLY call with interrupts disabled?? (else might miss one?)
// NEVER successful if already reflecting a trap/fault because psr.i==0
void vmx_deliver_pending_interrupt(struct pt_regs *regs)
{
struct domain *d = current->domain;
struct vcpu *v = current;
// FIXME: Will this work properly if doing an RFI???
if (!is_idle_task(d) ) { // always comes from guest
//vcpu_poke_timer(v);
//if (vcpu_deliverable_interrupts(v)) {
// unsigned long isr = regs->cr_ipsr & IA64_PSR_RI;
// foodpi();
// reflect_interruption(0,isr,0,regs,IA64_EXTINT_VECTOR);
//}
extern void vmx_dorfirfi(void);
struct pt_regs *user_regs = vcpu_regs(current);
if (user_regs != regs)
printk("WARNING: checking pending interrupt in nested interrupt!!!\n");
if (regs->cr_iip == *(unsigned long *)vmx_dorfirfi)
return;
vmx_check_pending_irq(v);
}
}
extern ia64_rr vmx_vcpu_rr(VCPU *vcpu,UINT64 vadr);
/* We came here because the H/W VHPT walker failed to find an entry */
void vmx_hpw_miss(VCPU *vcpu, u64 vec, u64 vadr)
{
IA64_PSR vpsr;
CACHE_LINE_TYPE type;
u64 vhpt_adr;
ISR misr;
ia64_rr vrr;
REGS *regs;
thash_cb_t *vtlb, *vhpt;
thash_data_t *data, me;
vtlb=vmx_vcpu_get_vtlb(vcpu);
#ifdef VTLB_DEBUG
check_vtlb_sanity(vtlb);
dump_vtlb(vtlb);
#endif
vpsr.val = vmx_vcpu_get_psr(vcpu);
regs = vcpu_regs(vcpu);
misr.val=regs->cr_isr;
/* TODO
if(vcpu->domain->id && vec == 2 &&
vpsr.dt == 0 && is_gpa_io(MASK_PMA(vaddr))){
emulate_ins(&v);
return;
}
*/
if((vec==1)&&(!vpsr.it)){
physical_itlb_miss(vcpu, vadr);
return;
}
if((vec==2)&&(!vpsr.dt)){
physical_dtlb_miss(vcpu, vadr);
return;
}
vrr = vmx_vcpu_rr(vcpu,vadr);
if(vec == 1) type = ISIDE_TLB;
else if(vec == 2) type = DSIDE_TLB;
else panic("wrong vec\n");
// prepare_if_physical_mode(vcpu);
if(data=vtlb_lookup_ex(vtlb, vrr.rid, vadr,type)){
if ( data->ps != vrr.ps ) {
machine_tlb_insert(vcpu, data);
}
else {
thash_insert(vtlb->ts->vhpt,data,vadr);
}
}else if(type == DSIDE_TLB){
if(!vhpt_enabled(vcpu, vadr, misr.rs?RSE_REF:DATA_REF)){
if(vpsr.ic){
vmx_vcpu_set_isr(vcpu, misr.val);
alt_dtlb(vcpu, vadr);
return IA64_FAULT;
} else{
if(misr.sp){
//TODO lds emulation
panic("Don't support speculation load");
}else{
nested_dtlb(vcpu);
return IA64_FAULT;
}
}
} else{
vmx_vcpu_thash(vcpu, vadr, &vhpt_adr);
vrr=vmx_vcpu_rr(vcpu,vhpt_adr);
data = vtlb_lookup_ex(vtlb, vrr.rid, vhpt_adr, DSIDE_TLB);
if(data){
if(vpsr.ic){
vmx_vcpu_set_isr(vcpu, misr.val);
dtlb_fault(vcpu, vadr);
return IA64_FAULT;
}else{
if(misr.sp){
//TODO lds emulation
panic("Don't support speculation load");
}else{
nested_dtlb(vcpu);
return IA64_FAULT;
}
}
}else{
if(vpsr.ic){
vmx_vcpu_set_isr(vcpu, misr.val);
dvhpt_fault(vcpu, vadr);
return IA64_FAULT;
}else{
if(misr.sp){
//TODO lds emulation
panic("Don't support speculation load");
}else{
nested_dtlb(vcpu);
return IA64_FAULT;
}
}
}
}
}else if(type == ISIDE_TLB){
if(!vhpt_enabled(vcpu, vadr, misr.rs?RSE_REF:DATA_REF)){
if(!vpsr.ic){
misr.ni=1;
}
vmx_vcpu_set_isr(vcpu, misr.val);
alt_itlb(vcpu, vadr);
return IA64_FAULT;
} else{
vmx_vcpu_thash(vcpu, vadr, &vhpt_adr);
vrr=vmx_vcpu_rr(vcpu,vhpt_adr);
data = vtlb_lookup_ex(vtlb, vrr.rid, vhpt_adr, DSIDE_TLB);
if(data){
if(!vpsr.ic){
misr.ni=1;
}
vmx_vcpu_set_isr(vcpu, misr.val);
itlb_fault(vcpu, vadr);
return IA64_FAULT;
}else{
if(!vpsr.ic){
misr.ni=1;
}
vmx_vcpu_set_isr(vcpu, misr.val);
ivhpt_fault(vcpu, vadr);
return IA64_FAULT;
}
}
}
}
|
