1 /* Simple wrappers around HVM functions */ 2 #ifndef XEN_HVM_H__ 3 #define XEN_HVM_H__ 4 5 #include <xen/interface/hvm/params.h> 6 #include <asm/xen/hypercall.h> 7 8 static const char *param_name(int op) 9 { 10 #define PARAM(x) [HVM_PARAM_##x] = #x 11 static const char *const names[] = { 12 PARAM(CALLBACK_IRQ), 13 PARAM(STORE_PFN), 14 PARAM(STORE_EVTCHN), 15 PARAM(PAE_ENABLED), 16 PARAM(IOREQ_PFN), 17 PARAM(BUFIOREQ_PFN), 18 PARAM(TIMER_MODE), 19 PARAM(HPET_ENABLED), 20 PARAM(IDENT_PT), 21 PARAM(DM_DOMAIN), 22 PARAM(ACPI_S_STATE), 23 PARAM(VM86_TSS), 24 PARAM(VPT_ALIGN), 25 PARAM(CONSOLE_PFN), 26 PARAM(CONSOLE_EVTCHN), 27 }; 28 #undef PARAM 29 30 if (op >= ARRAY_SIZE(names)) 31 return "unknown"; 32 33 if (!names[op]) 34 return "reserved"; 35 36 return names[op]; 37 } 38 static inline int hvm_get_parameter(int idx, uint64_t *value) 39 { 40 struct xen_hvm_param xhv; 41 int r; 42 43 xhv.domid = DOMID_SELF; 44 xhv.index = idx; 45 r = HYPERVISOR_hvm_op(HVMOP_get_param, &xhv); 46 if (r < 0) { 47 pr_err("Cannot get hvm parameter %s (%d): %d!\n", 48 param_name(idx), idx, r); 49 return r; 50 } 51 *value = xhv.value; 52 return r; 53 } 54 55 #define HVM_CALLBACK_VIA_TYPE_VECTOR 0x2 56 #define HVM_CALLBACK_VIA_TYPE_SHIFT 56 57 #define HVM_CALLBACK_VECTOR(x) (((uint64_t)HVM_CALLBACK_VIA_TYPE_VECTOR)<<\ 58 HVM_CALLBACK_VIA_TYPE_SHIFT | (x)) 59 60 #endif /* XEN_HVM_H__ */ 61