From e1ef0baaef9613cd9908f68b3d90812977ec29ab Mon Sep 17 00:00:00 2001 From: Zhang Xiantao Date: Wed, 19 Dec 2007 14:10:11 +0800 Subject: [PATCH] kvm/ia64: Add firmware emulation code for ia64 platform. This patch adds kvm_fw.c, which targets for firmware emulation. Signed-off-by: Zhang Xiantao --- arch/ia64/kvm/kvm_fw.c | 456 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 456 insertions(+), 0 deletions(-) create mode 100644 arch/ia64/kvm/kvm_fw.c diff --git a/arch/ia64/kvm/kvm_fw.c b/arch/ia64/kvm/kvm_fw.c new file mode 100644 index 0000000..b6440c7 --- /dev/null +++ b/arch/ia64/kvm/kvm_fw.c @@ -0,0 +1,456 @@ +/* + * PAL/SAL call delegation + * + * Copyright (c) 2004 Li Susie + * Copyright (c) 2005 Yu Ke + * Copyright (c) 2007 Zhang Xiantao + * + * 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. + */ + +#include + +#include "vti.h" +#include "misc.h" + +#include +#include +#include + +/* + * Handy macros to make sure that the PAL return values start out + * as something meaningful. + */ +#define INIT_PAL_STATUS_UNIMPLEMENTED(x) \ + { \ + x.status = PAL_STATUS_UNIMPLEMENTED; \ + x.v0 = 0; \ + x.v1 = 0; \ + x.v2 = 0; \ + } + +#define INIT_PAL_STATUS_SUCCESS(x) \ + { \ + x.status = PAL_STATUS_SUCCESS; \ + x.v0 = 0; \ + x.v1 = 0; \ + x.v2 = 0; \ + } + +static void kvm_get_pal_call_data(struct kvm_vcpu *vcpu, + u64 *gr28, u64 *gr29, u64 *gr30, u64 *gr31) { + struct exit_ctl_data *p; + + if (vcpu) { + p = &vcpu->arch.exit_data; + if (p->exit_reason == EXIT_REASON_PAL_CALL) { + *gr28 = p->u.pal_data.gr28; + *gr29 = p->u.pal_data.gr29; + *gr30 = p->u.pal_data.gr30; + *gr31 = p->u.pal_data.gr31; + return ; + } + } + printk(KERN_DEBUG"Error occurs in kvm_get_pal_call_data!!\n"); +} + +static void set_pal_result(struct kvm_vcpu *vcpu, + struct ia64_pal_retval result) { + + struct exit_ctl_data *p; + + p = kvm_get_exit_data(vcpu); + if (p && p->exit_reason == EXIT_REASON_PAL_CALL) { + p->u.pal_data.ret = result; + return ; + } + INIT_PAL_STATUS_UNIMPLEMENTED(p->u.pal_data.ret); +} + +static void set_sal_result(struct kvm_vcpu *vcpu, + struct sal_ret_values result) { + struct exit_ctl_data *p; + + p = kvm_get_exit_data(vcpu); + if (p && p->exit_reason == EXIT_REASON_SAL_CALL) { + p->u.sal_data.ret = result; + return ; + } + printk(KERN_WARNING"Error occurs!!!\n"); +} + + + +static struct ia64_pal_retval pal_cache_flush(struct kvm_vcpu *vcpu) +{ + u64 gr28, gr29, gr30, gr31; + struct ia64_pal_retval result; + + gr28 = gr29 = gr30 = gr31 = 0; + kvm_get_pal_call_data(vcpu, &gr28, &gr29, &gr30, &gr31); + + /* Always call Host Pal in int=1 */ + gr30 = gr30 & ~0x2UL; + + /* + * Call Host PAL cache flush + * Clear psr.ic when call PAL_CACHE_FLUSH + */ + result = ia64_pal_call_static(gr28, gr29, gr30, gr31); + + /* If host PAL call is interrupted, then loop to complete it. + while (result.status == 1) + ia64_pal_call_static(gr28, gr29, gr30, result.v1, 1LL); + */ + + return result; +} + +struct ia64_pal_retval pal_cache_summary(struct kvm_vcpu *vcpu) +{ + + struct ia64_pal_retval result; + + PAL_CALL(result, PAL_CACHE_SUMMARY, 0, 0, 0); + return result; +} + +static struct ia64_pal_retval pal_freq_base(struct kvm_vcpu *vcpu) +{ + + struct ia64_pal_retval result; + + PAL_CALL(result, PAL_FREQ_BASE, 0, 0, 0); + + /* + * PAL_FREQ_BASE may not be implemented in some platforms, + * call SAL instead. + */ + if (result.v0 == 0) { + result.status = ia64_sal_freq_base(SAL_FREQ_BASE_PLATFORM, + &result.v0, + &result.v1); + result.v2 = 0; + } + + return result; +} + +static struct ia64_pal_retval pal_freq_ratios(struct kvm_vcpu *vcpu) +{ + + struct ia64_pal_retval result; + + PAL_CALL(result, PAL_FREQ_RATIOS, 0, 0, 0); + return result; +} + +static struct ia64_pal_retval pal_logical_to_physica(struct kvm_vcpu *vcpu) +{ + struct ia64_pal_retval result; + + INIT_PAL_STATUS_UNIMPLEMENTED(result); + return result; +} + +static struct ia64_pal_retval pal_platform_addr(struct kvm_vcpu *vcpu) +{ + + struct ia64_pal_retval result; + + INIT_PAL_STATUS_SUCCESS(result); + return result; +} + +static struct ia64_pal_retval pal_proc_get_features(struct kvm_vcpu *vcpu) +{ + + struct ia64_pal_retval result = {0, 0, 0, 0}; + long in0, in1, in2, in3; + + kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3); + result.status = ia64_pal_proc_get_features(&result.v0, &result.v1, + &result.v2, in2); + + return result; +} + +static struct ia64_pal_retval pal_cache_info(struct kvm_vcpu *vcpu) +{ + + pal_cache_config_info_t ci; + long status; + unsigned long in0, in1, in2, in3, r9, r10; + + kvm_get_pal_call_data(vcpu, &in0, &in1, &in2, &in3); + status = ia64_pal_cache_config_info(in1, in2, &ci); + r9 = ci.pcci_info_1.pcci1_data; + r10 = ci.pcci_info_2.pcci2_data; + return ((struct ia64_pal_retval){status, r9, r10, 0}); +} + +#define GUEST_IMPL_VA_MSB 59 + +static struct ia64_pal_retval pal_vm_summary(struct kvm_vcpu *vcpu) +{ + + pal_vm_info_1_u_t vminfo1; + pal_vm_info_2_u_t vminfo2; + struct ia64_pal_retval result; + + PAL_CALL(result, PAL_VM_SUMMARY, 0, 0, 0); + if (!result.status) { + vminfo1.pvi1_val = result.v0; + vminfo1.pal_vm_info_1_s.max_itr_entry = 8; + vminfo1.pal_vm_info_1_s.max_dtr_entry = 8; + result.v0 = vminfo1.pvi1_val; + vminfo2.pal_vm_info_2_s.impl_va_msb = GUEST_IMPL_VA_MSB; + vminfo2.pal_vm_info_2_s.rid_size = 18; + /*FIXME: hard code here!!*/ + result.v1 = vminfo2.pvi2_val; + } + + return result; +} + +static struct ia64_pal_retval pal_vm_info(struct kvm_vcpu *vcpu) +{ + struct ia64_pal_retval result; + + INIT_PAL_STATUS_UNIMPLEMENTED(result); + + return result; +} + +static u64 kvm_get_pal_call_index(struct kvm_vcpu *vcpu) +{ + u64 index = 0; + struct exit_ctl_data *p; + + p = kvm_get_exit_data(vcpu); + if (p && (p->exit_reason == EXIT_REASON_PAL_CALL)) { + index = p->u.pal_data.gr28; + } + return index; +} + +int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *run) +{ + + u64 gr28; + struct ia64_pal_retval result; + int ret = 1; + + gr28 = kvm_get_pal_call_index(vcpu); + /*printk("pal_call index:%lx\n",gr28);*/ + switch (gr28) { + case PAL_CACHE_FLUSH: + result = pal_cache_flush(vcpu); + break; + case PAL_CACHE_SUMMARY: + result = pal_cache_summary(vcpu); + break; + case PAL_HALT_LIGHT: + { + vcpu->arch.timer_check = 1; + if (kvm_highest_pending_irq(vcpu) == -1) { + ret = kvm_emulate_halt(vcpu); + } + INIT_PAL_STATUS_SUCCESS(result); + } + break; + + case PAL_FREQ_RATIOS: + result = pal_freq_ratios(vcpu); + break; + + case PAL_FREQ_BASE: + result = pal_freq_base(vcpu); + break; + + case PAL_LOGICAL_TO_PHYSICAL : + result = pal_logical_to_physica(vcpu); + break; + + case PAL_VM_SUMMARY : + result = pal_vm_summary(vcpu); + break; + + case PAL_VM_INFO : + result = pal_vm_info(vcpu); + break; + case PAL_PLATFORM_ADDR : + result = pal_platform_addr(vcpu); + break; + case PAL_CACHE_INFO: + result = pal_cache_info(vcpu); + break; + case PAL_PTCE_INFO: + INIT_PAL_STATUS_SUCCESS(result); + result.v1 = (1L << 32) | 1L; + break; + case PAL_VM_PAGE_SIZE: + result.status = ia64_pal_vm_page_size(&result.v0, + &result.v1); + break; + case PAL_RSE_INFO: + result.status = ia64_pal_rse_info(&result.v0, + (pal_hints_u_t *)&result.v1); + break; + case PAL_PROC_GET_FEATURES: + result = pal_proc_get_features(vcpu); + break; + case PAL_DEBUG_INFO: + result.status = ia64_pal_debug_info(&result.v0, + &result.v1); + break; + case PAL_VERSION: + result.status = ia64_pal_version( + (pal_version_u_t *)&result.v0, + (pal_version_u_t *)&result.v1); + + break; + case PAL_FIXED_ADDR: + result.status = PAL_STATUS_SUCCESS; + result.v0 = vcpu->vcpu_id; + break; + default: + INIT_PAL_STATUS_UNIMPLEMENTED(result); + printk(KERN_WARNING"Guest call unsupported pal call," + "index:0x%lx\n", gr28); + } + set_pal_result(vcpu, result); + return ret; +} + +static struct sal_ret_values sal_emulator(long index, unsigned long in1, + unsigned long in2, unsigned long in3, + unsigned long in4, unsigned long in5, + unsigned long in6, unsigned long in7) +{ + unsigned long r9 = 0; + unsigned long r10 = 0; + long r11 = 0; + long status; + + status = 0; + switch (index) { + case SAL_FREQ_BASE: + status = ia64_sal_freq_base(in1, &r9, &r10); + break; + case SAL_PCI_CONFIG_READ: + printk(KERN_WARNING"NON-PRIV DOMAIN CALLED" + " SAL_PCI_CONFIG_READ\n"); + break; + case SAL_PCI_CONFIG_WRITE: + printk(KERN_WARNING"NON-PRIV DOMAIN CALLED" + " SAL_PCI_CONFIG_WRITE\n"); + break; + case SAL_SET_VECTORS: + if (in1 == SAL_VECTOR_OS_BOOT_RENDEZ) { + printk(KERN_WARNING"SAL_VECTOR_OS_BOOT_RENDEZ" + "not implemented !!!\n"); + } else + printk(KERN_WARNING"*** CALLED SAL_SET_VECTORS %lu." + "IGNORED...\n", in1); + break; + case SAL_GET_STATE_INFO: + /* No more info. */ + status = -5; + r9 = 0; + break; + case SAL_GET_STATE_INFO_SIZE: + /* Return a dummy size. */ + status = 0; + r9 = 128; + break; + case SAL_CLEAR_STATE_INFO: + /* Noop. */ + break; + case SAL_MC_RENDEZ: + printk(KERN_WARNING + "*** KVM:CALLED SAL_MC_RENDEZ. IGNORED...\n"); + break; + case SAL_MC_SET_PARAMS: + printk(KERN_WARNING + "*** KVM:CALLED SAL_MC_SET_PARAMS.IGNORED!\n"); + break; + case SAL_CACHE_FLUSH: + if (1) { + /*Flush using SAL. + This method is faster but has a side + effect on other vcpu running on + this cpu. */ + status = ia64_sal_cache_flush(in1); + } else { + /*Maybe need to implement the method + without side effect!*/ + status = 0; + } + break; + case SAL_CACHE_INIT: + printk(KERN_WARNING + "***KVM:CALLED SAL_CACHE_INIT. IGNORED...\n"); + break; + case SAL_UPDATE_PAL: + printk(KERN_WARNING + "***KVM:CALLED SAL_UPDATE_PAL. IGNORED...\n"); + break; + default: + printk(KERN_WARNING"***KVM: CALLED SAL_ WITH UNKNOWN INDEX." + " IGNORED...\n"); + status = -1; + break; + } + return ((struct sal_ret_values) {status, r9, r10, r11}); +} + +static void kvm_get_sal_call_data(struct kvm_vcpu *vcpu, u64 *in0, u64 *in1, + u64 *in2, u64 *in3, u64 *in4, u64 *in5, u64 *in6, u64 *in7){ + + struct exit_ctl_data *p; + + p = kvm_get_exit_data(vcpu); + + if (p) { + if (p->exit_reason == EXIT_REASON_SAL_CALL) { + *in0 = p->u.sal_data.in0; + *in1 = p->u.sal_data.in1; + *in2 = p->u.sal_data.in2; + *in3 = p->u.sal_data.in3; + *in4 = p->u.sal_data.in4; + *in5 = p->u.sal_data.in5; + *in6 = p->u.sal_data.in6; + *in7 = p->u.sal_data.in7; + return ; + } + } + *in0 = 0; +} + +void kvm_sal_emul(struct kvm_vcpu *vcpu) +{ + + struct sal_ret_values result; + u64 index, in1, in2, in3, in4, in5, in6, in7; + + kvm_get_sal_call_data(vcpu, &index, &in1, &in2, + &in3, &in4, &in5, &in6, &in7); + if (index) { + result = sal_emulator(index, in1, in2, in3, + in4, in5, in6, in7); + set_sal_result(vcpu, result); + } else + printk(KERN_WARNING"Guest called unsupported sal call !!!!\n"); +} -- 1.5.2