mirror of https://gitee.com/openkylin/linux.git
501 lines
12 KiB
C
501 lines
12 KiB
C
/*
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* PAL/SAL call delegation
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*
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* Copyright (c) 2004 Li Susie <susie.li@intel.com>
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* Copyright (c) 2005 Yu Ke <ke.yu@intel.com>
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* Copyright (c) 2007 Xiantao Zhang <xiantao.zhang@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*/
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#include <linux/kvm_host.h>
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#include <linux/smp.h>
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#include "vti.h"
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#include "misc.h"
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#include <asm/pal.h>
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#include <asm/sal.h>
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#include <asm/tlb.h>
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/*
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* Handy macros to make sure that the PAL return values start out
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* as something meaningful.
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*/
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#define INIT_PAL_STATUS_UNIMPLEMENTED(x) \
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{ \
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x.status = PAL_STATUS_UNIMPLEMENTED; \
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x.v0 = 0; \
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x.v1 = 0; \
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x.v2 = 0; \
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}
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#define INIT_PAL_STATUS_SUCCESS(x) \
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{ \
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x.status = PAL_STATUS_SUCCESS; \
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x.v0 = 0; \
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x.v1 = 0; \
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x.v2 = 0; \
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}
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static void kvm_get_pal_call_data(struct kvm_vcpu *vcpu,
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u64 *gr28, u64 *gr29, u64 *gr30, u64 *gr31) {
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struct exit_ctl_data *p;
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if (vcpu) {
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p = &vcpu->arch.exit_data;
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if (p->exit_reason == EXIT_REASON_PAL_CALL) {
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*gr28 = p->u.pal_data.gr28;
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*gr29 = p->u.pal_data.gr29;
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*gr30 = p->u.pal_data.gr30;
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*gr31 = p->u.pal_data.gr31;
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return ;
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}
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}
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printk(KERN_DEBUG"Failed to get vcpu pal data!!!\n");
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}
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static void set_pal_result(struct kvm_vcpu *vcpu,
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struct ia64_pal_retval result) {
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struct exit_ctl_data *p;
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p = kvm_get_exit_data(vcpu);
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if (p && p->exit_reason == EXIT_REASON_PAL_CALL) {
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p->u.pal_data.ret = result;
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return ;
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}
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INIT_PAL_STATUS_UNIMPLEMENTED(p->u.pal_data.ret);
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}
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static void set_sal_result(struct kvm_vcpu *vcpu,
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struct sal_ret_values result) {
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struct exit_ctl_data *p;
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p = kvm_get_exit_data(vcpu);
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if (p && p->exit_reason == EXIT_REASON_SAL_CALL) {
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p->u.sal_data.ret = result;
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return ;
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}
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printk(KERN_WARNING"Failed to set sal result!!\n");
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}
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struct cache_flush_args {
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u64 cache_type;
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u64 operation;
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u64 progress;
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long status;
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};
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cpumask_t cpu_cache_coherent_map;
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static void remote_pal_cache_flush(void *data)
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{
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struct cache_flush_args *args = data;
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long status;
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u64 progress = args->progress;
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status = ia64_pal_cache_flush(args->cache_type, args->operation,
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&progress, NULL);
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if (status != 0)
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args->status = status;
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}
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static struct ia64_pal_retval pal_cache_flush(struct kvm_vcpu *vcpu)
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{
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u64 gr28, gr29, gr30, gr31;
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struct ia64_pal_retval result = {0, 0, 0, 0};
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struct cache_flush_args args = {0, 0, 0, 0};
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long psr;
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gr28 = gr29 = gr30 = gr31 = 0;
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kvm_get_pal_call_data(vcpu, &gr28, &gr29, &gr30, &gr31);
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if (gr31 != 0)
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printk(KERN_ERR"vcpu:%p called cache_flush error!\n", vcpu);
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/* Always call Host Pal in int=1 */
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gr30 &= ~PAL_CACHE_FLUSH_CHK_INTRS;
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args.cache_type = gr29;
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args.operation = gr30;
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smp_call_function(remote_pal_cache_flush,
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(void *)&args, 1);
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if (args.status != 0)
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printk(KERN_ERR"pal_cache_flush error!,"
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"status:0x%lx\n", args.status);
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/*
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* Call Host PAL cache flush
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* Clear psr.ic when call PAL_CACHE_FLUSH
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*/
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local_irq_save(psr);
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result.status = ia64_pal_cache_flush(gr29, gr30, &result.v1,
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&result.v0);
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local_irq_restore(psr);
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if (result.status != 0)
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printk(KERN_ERR"vcpu:%p crashed due to cache_flush err:%ld"
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"in1:%lx,in2:%lx\n",
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vcpu, result.status, gr29, gr30);
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#if 0
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if (gr29 == PAL_CACHE_TYPE_COHERENT) {
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cpus_setall(vcpu->arch.cache_coherent_map);
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cpu_clear(vcpu->cpu, vcpu->arch.cache_coherent_map);
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cpus_setall(cpu_cache_coherent_map);
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cpu_clear(vcpu->cpu, cpu_cache_coherent_map);
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}
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#endif
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return result;
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}
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struct ia64_pal_retval pal_cache_summary(struct kvm_vcpu *vcpu)
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{
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struct ia64_pal_retval result;
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PAL_CALL(result, PAL_CACHE_SUMMARY, 0, 0, 0);
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return result;
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}
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static struct ia64_pal_retval pal_freq_base(struct kvm_vcpu *vcpu)
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{
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struct ia64_pal_retval result;
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PAL_CALL(result, PAL_FREQ_BASE, 0, 0, 0);
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/*
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* PAL_FREQ_BASE may not be implemented in some platforms,
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* call SAL instead.
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*/
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if (result.v0 == 0) {
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result.status = ia64_sal_freq_base(SAL_FREQ_BASE_PLATFORM,
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&result.v0,
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&result.v1);
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result.v2 = 0;
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}
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return result;
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}
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static struct ia64_pal_retval pal_freq_ratios(struct kvm_vcpu *vcpu)
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{
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struct ia64_pal_retval result;
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PAL_CALL(result, PAL_FREQ_RATIOS, 0, 0, 0);
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return result;
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}
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static struct ia64_pal_retval pal_logical_to_physica(struct kvm_vcpu *vcpu)
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{
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struct ia64_pal_retval result;
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INIT_PAL_STATUS_UNIMPLEMENTED(result);
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return result;
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}
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static struct ia64_pal_retval pal_platform_addr(struct kvm_vcpu *vcpu)
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{
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struct ia64_pal_retval result;
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INIT_PAL_STATUS_SUCCESS(result);
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return result;
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}
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static struct ia64_pal_retval pal_proc_get_features(struct kvm_vcpu *vcpu)
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{
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struct ia64_pal_retval result = {0, 0, 0, 0};
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long in0, in1, in2, in3;
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kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3);
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result.status = ia64_pal_proc_get_features(&result.v0, &result.v1,
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&result.v2, in2);
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return result;
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}
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static struct ia64_pal_retval pal_cache_info(struct kvm_vcpu *vcpu)
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{
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pal_cache_config_info_t ci;
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long status;
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unsigned long in0, in1, in2, in3, r9, r10;
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kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3);
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status = ia64_pal_cache_config_info(in1, in2, &ci);
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r9 = ci.pcci_info_1.pcci1_data;
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r10 = ci.pcci_info_2.pcci2_data;
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return ((struct ia64_pal_retval){status, r9, r10, 0});
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}
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#define GUEST_IMPL_VA_MSB 59
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#define GUEST_RID_BITS 18
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static struct ia64_pal_retval pal_vm_summary(struct kvm_vcpu *vcpu)
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{
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pal_vm_info_1_u_t vminfo1;
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pal_vm_info_2_u_t vminfo2;
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struct ia64_pal_retval result;
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PAL_CALL(result, PAL_VM_SUMMARY, 0, 0, 0);
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if (!result.status) {
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vminfo1.pvi1_val = result.v0;
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vminfo1.pal_vm_info_1_s.max_itr_entry = 8;
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vminfo1.pal_vm_info_1_s.max_dtr_entry = 8;
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result.v0 = vminfo1.pvi1_val;
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vminfo2.pal_vm_info_2_s.impl_va_msb = GUEST_IMPL_VA_MSB;
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vminfo2.pal_vm_info_2_s.rid_size = GUEST_RID_BITS;
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result.v1 = vminfo2.pvi2_val;
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}
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return result;
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}
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static struct ia64_pal_retval pal_vm_info(struct kvm_vcpu *vcpu)
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{
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struct ia64_pal_retval result;
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INIT_PAL_STATUS_UNIMPLEMENTED(result);
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return result;
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}
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static u64 kvm_get_pal_call_index(struct kvm_vcpu *vcpu)
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{
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u64 index = 0;
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struct exit_ctl_data *p;
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p = kvm_get_exit_data(vcpu);
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if (p && (p->exit_reason == EXIT_REASON_PAL_CALL))
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index = p->u.pal_data.gr28;
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return index;
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}
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int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *run)
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{
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u64 gr28;
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struct ia64_pal_retval result;
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int ret = 1;
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gr28 = kvm_get_pal_call_index(vcpu);
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/*printk("pal_call index:%lx\n",gr28);*/
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switch (gr28) {
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case PAL_CACHE_FLUSH:
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result = pal_cache_flush(vcpu);
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break;
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case PAL_CACHE_SUMMARY:
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result = pal_cache_summary(vcpu);
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break;
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case PAL_HALT_LIGHT:
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{
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vcpu->arch.timer_pending = 1;
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INIT_PAL_STATUS_SUCCESS(result);
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if (kvm_highest_pending_irq(vcpu) == -1)
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ret = kvm_emulate_halt(vcpu);
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}
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break;
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case PAL_FREQ_RATIOS:
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result = pal_freq_ratios(vcpu);
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break;
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case PAL_FREQ_BASE:
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result = pal_freq_base(vcpu);
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break;
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case PAL_LOGICAL_TO_PHYSICAL :
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result = pal_logical_to_physica(vcpu);
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break;
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case PAL_VM_SUMMARY :
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result = pal_vm_summary(vcpu);
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break;
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case PAL_VM_INFO :
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result = pal_vm_info(vcpu);
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break;
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case PAL_PLATFORM_ADDR :
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result = pal_platform_addr(vcpu);
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break;
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case PAL_CACHE_INFO:
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result = pal_cache_info(vcpu);
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break;
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case PAL_PTCE_INFO:
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INIT_PAL_STATUS_SUCCESS(result);
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result.v1 = (1L << 32) | 1L;
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break;
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case PAL_VM_PAGE_SIZE:
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result.status = ia64_pal_vm_page_size(&result.v0,
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&result.v1);
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break;
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case PAL_RSE_INFO:
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result.status = ia64_pal_rse_info(&result.v0,
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(pal_hints_u_t *)&result.v1);
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break;
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case PAL_PROC_GET_FEATURES:
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result = pal_proc_get_features(vcpu);
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break;
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case PAL_DEBUG_INFO:
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result.status = ia64_pal_debug_info(&result.v0,
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&result.v1);
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break;
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case PAL_VERSION:
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result.status = ia64_pal_version(
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(pal_version_u_t *)&result.v0,
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(pal_version_u_t *)&result.v1);
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break;
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case PAL_FIXED_ADDR:
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result.status = PAL_STATUS_SUCCESS;
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result.v0 = vcpu->vcpu_id;
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break;
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default:
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INIT_PAL_STATUS_UNIMPLEMENTED(result);
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printk(KERN_WARNING"kvm: Unsupported pal call,"
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" index:0x%lx\n", gr28);
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}
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set_pal_result(vcpu, result);
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return ret;
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}
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static struct sal_ret_values sal_emulator(struct kvm *kvm,
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long index, unsigned long in1,
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unsigned long in2, unsigned long in3,
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unsigned long in4, unsigned long in5,
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unsigned long in6, unsigned long in7)
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{
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unsigned long r9 = 0;
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unsigned long r10 = 0;
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long r11 = 0;
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long status;
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status = 0;
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switch (index) {
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case SAL_FREQ_BASE:
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status = ia64_sal_freq_base(in1, &r9, &r10);
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break;
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case SAL_PCI_CONFIG_READ:
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printk(KERN_WARNING"kvm: Not allowed to call here!"
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" SAL_PCI_CONFIG_READ\n");
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break;
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case SAL_PCI_CONFIG_WRITE:
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printk(KERN_WARNING"kvm: Not allowed to call here!"
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" SAL_PCI_CONFIG_WRITE\n");
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break;
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case SAL_SET_VECTORS:
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if (in1 == SAL_VECTOR_OS_BOOT_RENDEZ) {
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if (in4 != 0 || in5 != 0 || in6 != 0 || in7 != 0) {
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status = -2;
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} else {
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kvm->arch.rdv_sal_data.boot_ip = in2;
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kvm->arch.rdv_sal_data.boot_gp = in3;
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}
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printk("Rendvous called! iip:%lx\n\n", in2);
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} else
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printk(KERN_WARNING"kvm: CALLED SAL_SET_VECTORS %lu."
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"ignored...\n", in1);
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break;
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case SAL_GET_STATE_INFO:
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/* No more info. */
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status = -5;
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r9 = 0;
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break;
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case SAL_GET_STATE_INFO_SIZE:
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/* Return a dummy size. */
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status = 0;
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r9 = 128;
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break;
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case SAL_CLEAR_STATE_INFO:
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/* Noop. */
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break;
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case SAL_MC_RENDEZ:
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printk(KERN_WARNING
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"kvm: called SAL_MC_RENDEZ. ignored...\n");
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break;
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case SAL_MC_SET_PARAMS:
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printk(KERN_WARNING
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"kvm: called SAL_MC_SET_PARAMS.ignored!\n");
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break;
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case SAL_CACHE_FLUSH:
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if (1) {
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/*Flush using SAL.
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This method is faster but has a side
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effect on other vcpu running on
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this cpu. */
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status = ia64_sal_cache_flush(in1);
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} else {
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/*Maybe need to implement the method
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without side effect!*/
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status = 0;
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}
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break;
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case SAL_CACHE_INIT:
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printk(KERN_WARNING
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"kvm: called SAL_CACHE_INIT. ignored...\n");
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break;
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case SAL_UPDATE_PAL:
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printk(KERN_WARNING
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"kvm: CALLED SAL_UPDATE_PAL. ignored...\n");
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break;
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default:
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printk(KERN_WARNING"kvm: called SAL_CALL with unknown index."
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" index:%ld\n", index);
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status = -1;
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break;
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}
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return ((struct sal_ret_values) {status, r9, r10, r11});
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}
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static void kvm_get_sal_call_data(struct kvm_vcpu *vcpu, u64 *in0, u64 *in1,
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u64 *in2, u64 *in3, u64 *in4, u64 *in5, u64 *in6, u64 *in7){
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struct exit_ctl_data *p;
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p = kvm_get_exit_data(vcpu);
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if (p) {
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if (p->exit_reason == EXIT_REASON_SAL_CALL) {
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*in0 = p->u.sal_data.in0;
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*in1 = p->u.sal_data.in1;
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*in2 = p->u.sal_data.in2;
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*in3 = p->u.sal_data.in3;
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*in4 = p->u.sal_data.in4;
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*in5 = p->u.sal_data.in5;
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*in6 = p->u.sal_data.in6;
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*in7 = p->u.sal_data.in7;
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return ;
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}
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}
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*in0 = 0;
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}
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void kvm_sal_emul(struct kvm_vcpu *vcpu)
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{
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struct sal_ret_values result;
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u64 index, in1, in2, in3, in4, in5, in6, in7;
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kvm_get_sal_call_data(vcpu, &index, &in1, &in2,
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&in3, &in4, &in5, &in6, &in7);
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result = sal_emulator(vcpu->kvm, index, in1, in2, in3,
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in4, in5, in6, in7);
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set_sal_result(vcpu, result);
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}
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