66 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/* Simple wrappers around HVM functions */3#ifndef XEN_HVM_H__4#define XEN_HVM_H__5 6#include <xen/interface/hvm/params.h>7#include <asm/xen/hypercall.h>8 9static const char *param_name(int op)10{11#define PARAM(x) [HVM_PARAM_##x] = #x12 static const char *const names[] = {13 PARAM(CALLBACK_IRQ),14 PARAM(STORE_PFN),15 PARAM(STORE_EVTCHN),16 PARAM(PAE_ENABLED),17 PARAM(IOREQ_PFN),18 PARAM(BUFIOREQ_PFN),19 PARAM(TIMER_MODE),20 PARAM(HPET_ENABLED),21 PARAM(IDENT_PT),22 PARAM(DM_DOMAIN),23 PARAM(ACPI_S_STATE),24 PARAM(VM86_TSS),25 PARAM(VPT_ALIGN),26 PARAM(CONSOLE_PFN),27 PARAM(CONSOLE_EVTCHN),28 };29#undef PARAM30 31 if (op >= ARRAY_SIZE(names))32 return "unknown";33 34 if (!names[op])35 return "reserved";36 37 return names[op];38}39static inline int hvm_get_parameter(int idx, uint64_t *value)40{41 struct xen_hvm_param xhv;42 int r;43 44 xhv.domid = DOMID_SELF;45 xhv.index = idx;46 r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv);47 if (r < 0) {48 pr_err("Cannot get hvm parameter %s (%d): %d!\n",49 param_name(idx), idx, r);50 return r;51 }52 *value = xhv.value;53 return r;54}55 56#define HVM_CALLBACK_VIA_TYPE_VECTOR 0x257#define HVM_CALLBACK_VIA_TYPE_SHIFT 5658#define HVM_CALLBACK_VECTOR(x) (((uint64_t)HVM_CALLBACK_VIA_TYPE_VECTOR)<<\59 HVM_CALLBACK_VIA_TYPE_SHIFT | (x))60 61void xen_setup_callback_vector(void);62 63int xen_set_upcall_vector(unsigned int cpu);64 65#endif /* XEN_HVM_H__ */66