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hv: add new hypercall to fetch platform configurations

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add new hypercall get platform information,
 such as physical CPU number.

Tracked-On: #2538
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yonghua Huang 2019-02-15 19:57:36 +08:00 committed by Eddie Dong
parent e216f3060c
commit 46480f6e23
4 changed files with 66 additions and 0 deletions
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4
hypervisor/arch/x86/guest/vmcall.c
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@ -40,6 +40,10 @@ static int32_t dispatch_hypercall(struct acrn_vcpu *vcpu)
ret = hcall_get_api_version(vm, param1); ret = hcall_get_api_version(vm, param1);
break; break;
case HC_GET_PLATFORM_INFO:
ret = hcall_get_platform_info(vm, param1);
break;
case HC_SET_CALLBACK_VECTOR: case HC_SET_CALLBACK_VECTOR:
ret = hcall_set_callback_vector(vm, param1); ret = hcall_set_callback_vector(vm, param1);

27
hypervisor/common/hypercall.c
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@ -102,6 +102,33 @@ int32_t hcall_get_api_version(struct acrn_vm *vm, uint64_t param)
return ret; return ret;
} }
/**
* @brief Get basic platform information.
*
* The function returns basic hardware or configuration information
* for the current platform.
*
* @param vm Pointer to VM data structure.
* @param param GPA pointer to struct hc_platform_info.
*
* @pre Pointer vm shall point to SOS_VM
* @return 0 on success, -1 in case of error.
*/
int32_t hcall_get_platform_info(struct acrn_vm *vm, uint64_t param)
{
int32_t ret = 0;
struct hc_platform_info platform_info;
platform_info.cpu_num = get_pcpu_nums();
platform_info.max_vcpus_per_vm = CONFIG_MAX_VCPUS_PER_VM;
if (copy_to_gpa(vm, &platform_info, param, sizeof(platform_info)) != 0) {
pr_err("%s: Unable copy param to vm\n", __func__);
ret = -1;
}
return ret;
}
/** /**
* @brief create virtual machine * @brief create virtual machine
* *

15
hypervisor/include/common/hypercall.h
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@ -51,6 +51,21 @@ int32_t hcall_sos_offline_cpu(struct acrn_vm *vm, uint64_t lapicid);
*/ */
int32_t hcall_get_api_version(struct acrn_vm *vm, uint64_t param); int32_t hcall_get_api_version(struct acrn_vm *vm, uint64_t param);
/**
* @brief Get basic platform information.
*
* The function returns basic hardware or configuration information
* for the current platform.
*
* @param vm Pointer to VM data structure.
* @param param GPA pointer to struct hc_platform_info.
*
* @pre Pointer vm shall point to SOS_VM
* @return 0 on success, -1 in case of error.
*/
int32_t hcall_get_platform_info(struct acrn_vm *vm, uint64_t param);
/** /**
* @brief create virtual machine * @brief create virtual machine
* *

20
hypervisor/include/public/acrn_hv_defs.h
View File

@ -28,6 +28,7 @@
#define HC_GET_API_VERSION BASE_HC_ID(HC_ID, HC_ID_GEN_BASE + 0x00UL) #define HC_GET_API_VERSION BASE_HC_ID(HC_ID, HC_ID_GEN_BASE + 0x00UL)
#define HC_SOS_OFFLINE_CPU BASE_HC_ID(HC_ID, HC_ID_GEN_BASE + 0x01UL) #define HC_SOS_OFFLINE_CPU BASE_HC_ID(HC_ID, HC_ID_GEN_BASE + 0x01UL)
#define HC_SET_CALLBACK_VECTOR BASE_HC_ID(HC_ID, HC_ID_GEN_BASE + 0x02UL) #define HC_SET_CALLBACK_VECTOR BASE_HC_ID(HC_ID, HC_ID_GEN_BASE + 0x02UL)
#define HC_GET_PLATFORM_INFO BASE_HC_ID(HC_ID, HC_ID_GEN_BASE + 0x03UL)
/* VM management */ /* VM management */
#define HC_ID_VM_BASE 0x10UL #define HC_ID_VM_BASE 0x10UL
@ -281,6 +282,25 @@ struct hc_api_version {
uint32_t minor_version; uint32_t minor_version;
} __aligned(8); } __aligned(8);
/**
* Hypervisor API, return it for HC_GET_PLATFORM_INFO hypercall
*/
struct hc_platform_info {
/** Hardware Information */
/** Physical CPU number */
uint16_t cpu_num;
/** Align the size of version & hardware info to 128Bytes. */
uint8_t reserved0[126];
/** Configuration Information */
/** Maximum vCPU number for one VM. */
uint16_t max_vcpus_per_vm;
/** Align the size of Configuration info to 128Bytes. */
uint8_t reserved1[126];
} __aligned(8);
/** /**
* Trusty boot params, used for HC_INITIALIZE_TRUSTY * Trusty boot params, used for HC_INITIALIZE_TRUSTY
*/ */