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/* Things the lguest guest needs to know. Note: like all lguest interfaces,
* this is subject to wild and random change between versions. */
#ifndef _ASM_LGUEST_H
#define _ASM_LGUEST_H
/* These are randomly chosen numbers which indicate we're an lguest at boot */
#define LGUEST_MAGIC_EBP 0x4C687970
#define LGUEST_MAGIC_EDI 0x652D4D65
#define LGUEST_MAGIC_ESI 0xFFFFFFFF
#ifndef __ASSEMBLY__
#include <asm/irq.h>
#define LHCALL_FLUSH_ASYNC 0
#define LHCALL_LGUEST_INIT 1
#define LHCALL_CRASH 2
#define LHCALL_LOAD_GDT 3
#define LHCALL_NEW_PGTABLE 4
#define LHCALL_FLUSH_TLB 5
#define LHCALL_LOAD_IDT_ENTRY 6
#define LHCALL_SET_STACK 7
#define LHCALL_TS 8
#define LHCALL_TIMER_READ 9
#define LHCALL_HALT 10
#define LHCALL_GET_WALLCLOCK 11
#define LHCALL_BIND_DMA 12
#define LHCALL_SEND_DMA 13
#define LHCALL_SET_PTE 14
#define LHCALL_SET_PMD 15
#define LHCALL_LOAD_TLS 16
#define LGUEST_TRAP_ENTRY 0x1F
static inline unsigned long
hcall(unsigned long call,
unsigned long arg1, unsigned long arg2, unsigned long arg3)
{
asm volatile("int $" __stringify(LGUEST_TRAP_ENTRY)
: "=a"(call)
: "a"(call), "d"(arg1), "b"(arg2), "c"(arg3)
: "memory");
return call;
}
void async_hcall(unsigned long call,
unsigned long arg1, unsigned long arg2, unsigned long arg3);
/* Can't use our min() macro here: needs to be a constant */
#define LGUEST_IRQS (NR_IRQS < 32 ? NR_IRQS: 32)
#define LHCALL_RING_SIZE 64
struct hcall_ring
{
u32 eax, edx, ebx, ecx;
};
/* All the good stuff happens here: guest registers it with LGUEST_INIT */
struct lguest_data
{
/* Fields which change during running: */
/* 512 == enabled (same as eflags) */
unsigned int irq_enabled;
/* Interrupts blocked by guest. */
DECLARE_BITMAP(blocked_interrupts, LGUEST_IRQS);
/* Virtual address of page fault. */
unsigned long cr2;
/* Async hypercall ring. 0xFF == done, 0 == pending. */
u8 hcall_status[LHCALL_RING_SIZE];
struct hcall_ring hcalls[LHCALL_RING_SIZE];
/* Fields initialized by the hypervisor at boot: */
/* Memory not to try to access */
unsigned long reserve_mem;
/* ID of this guest (used by network driver to set ethernet address) */
u16 guestid;
/* Fields initialized by the guest at boot: */
/* Instruction range to suppress interrupts even if enabled */
unsigned long noirq_start, noirq_end;
};
extern struct lguest_data lguest_data;
#endif /* __ASSEMBLY__ */
#endif /* _ASM_LGUEST_H */
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