Move lguest hcalls to arch-specific header
Move architecture specific portion of lg_hcall code to asm-i386/lg_hcall.h and have it included from linux/lguest.h. [Changed to asm-i386/lguest_hcall.h so documentation finds it -RR] Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Jes Sorensen <jes@sgi.com>
This commit is contained in:
parent
05aa026a62
commit
c37ae93d59
67
include/asm-x86/lguest_hcall.h
Normal file
67
include/asm-x86/lguest_hcall.h
Normal file
@ -0,0 +1,67 @@
|
|||||||
|
/* Architecture specific portion of the lguest hypercalls */
|
||||||
|
#ifndef _X86_LGUEST_HCALL_H
|
||||||
|
#define _X86_LGUEST_HCALL_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_SET_CLOCKEVENT 9
|
||||||
|
#define LHCALL_HALT 10
|
||||||
|
#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
|
||||||
|
|
||||||
|
/*G:031 First, how does our Guest contact the Host to ask for privileged
|
||||||
|
* operations? There are two ways: the direct way is to make a "hypercall",
|
||||||
|
* to make requests of the Host Itself.
|
||||||
|
*
|
||||||
|
* Our hypercall mechanism uses the highest unused trap code (traps 32 and
|
||||||
|
* above are used by real hardware interrupts). Seventeen hypercalls are
|
||||||
|
* available: the hypercall number is put in the %eax register, and the
|
||||||
|
* arguments (when required) are placed in %edx, %ebx and %ecx. If a return
|
||||||
|
* value makes sense, it's returned in %eax.
|
||||||
|
*
|
||||||
|
* Grossly invalid calls result in Sudden Death at the hands of the vengeful
|
||||||
|
* Host, rather than returning failure. This reflects Winston Churchill's
|
||||||
|
* definition of a gentleman: "someone who is only rude intentionally". */
|
||||||
|
#define LGUEST_TRAP_ENTRY 0x1F
|
||||||
|
|
||||||
|
static inline unsigned long
|
||||||
|
hcall(unsigned long call,
|
||||||
|
unsigned long arg1, unsigned long arg2, unsigned long arg3)
|
||||||
|
{
|
||||||
|
/* "int" is the Intel instruction to trigger a trap. */
|
||||||
|
asm volatile("int $" __stringify(LGUEST_TRAP_ENTRY)
|
||||||
|
/* The call is in %eax (aka "a"), and can be replaced */
|
||||||
|
: "=a"(call)
|
||||||
|
/* The other arguments are in %eax, %edx, %ebx & %ecx */
|
||||||
|
: "a"(call), "d"(arg1), "b"(arg2), "c"(arg3)
|
||||||
|
/* "memory" means this might write somewhere in memory.
|
||||||
|
* This isn't true for all calls, but it's safe to tell
|
||||||
|
* gcc that it might happen so it doesn't get clever. */
|
||||||
|
: "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;
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif /* _I386_LGUEST_HCALL_H */
|
@ -1,76 +1,15 @@
|
|||||||
/* Things the lguest guest needs to know. Note: like all lguest interfaces,
|
/* Things the lguest guest needs to know. Note: like all lguest interfaces,
|
||||||
* this is subject to wild and random change between versions. */
|
* this is subject to wild and random change between versions. */
|
||||||
#ifndef _ASM_LGUEST_H
|
#ifndef _LINUX_LGUEST_H
|
||||||
#define _ASM_LGUEST_H
|
#define _LINUX_LGUEST_H
|
||||||
|
|
||||||
#ifndef __ASSEMBLY__
|
#ifndef __ASSEMBLY__
|
||||||
#include <asm/irq.h>
|
#include <asm/irq.h>
|
||||||
|
#include <asm/lguest_hcall.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_SET_CLOCKEVENT 9
|
|
||||||
#define LHCALL_HALT 10
|
|
||||||
#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 LG_CLOCK_MIN_DELTA 100UL
|
#define LG_CLOCK_MIN_DELTA 100UL
|
||||||
#define LG_CLOCK_MAX_DELTA ULONG_MAX
|
#define LG_CLOCK_MAX_DELTA ULONG_MAX
|
||||||
|
|
||||||
/*G:031 First, how does our Guest contact the Host to ask for privileged
|
|
||||||
* operations? There are two ways: the direct way is to make a "hypercall",
|
|
||||||
* to make requests of the Host Itself.
|
|
||||||
*
|
|
||||||
* Our hypercall mechanism uses the highest unused trap code (traps 32 and
|
|
||||||
* above are used by real hardware interrupts). Seventeen hypercalls are
|
|
||||||
* available: the hypercall number is put in the %eax register, and the
|
|
||||||
* arguments (when required) are placed in %edx, %ebx and %ecx. If a return
|
|
||||||
* value makes sense, it's returned in %eax.
|
|
||||||
*
|
|
||||||
* Grossly invalid calls result in Sudden Death at the hands of the vengeful
|
|
||||||
* Host, rather than returning failure. This reflects Winston Churchill's
|
|
||||||
* definition of a gentleman: "someone who is only rude intentionally". */
|
|
||||||
#define LGUEST_TRAP_ENTRY 0x1F
|
|
||||||
|
|
||||||
static inline unsigned long
|
|
||||||
hcall(unsigned long call,
|
|
||||||
unsigned long arg1, unsigned long arg2, unsigned long arg3)
|
|
||||||
{
|
|
||||||
/* "int" is the Intel instruction to trigger a trap. */
|
|
||||||
asm volatile("int $" __stringify(LGUEST_TRAP_ENTRY)
|
|
||||||
/* The call is in %eax (aka "a"), and can be replaced */
|
|
||||||
: "=a"(call)
|
|
||||||
/* The other arguments are in %eax, %edx, %ebx & %ecx */
|
|
||||||
: "a"(call), "d"(arg1), "b"(arg2), "c"(arg3)
|
|
||||||
/* "memory" means this might write somewhere in memory.
|
|
||||||
* This isn't true for all calls, but it's safe to tell
|
|
||||||
* gcc that it might happen so it doesn't get clever. */
|
|
||||||
: "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;
|
|
||||||
};
|
|
||||||
|
|
||||||
/*G:032 The second method of communicating with the Host is to via "struct
|
/*G:032 The second method of communicating with the Host is to via "struct
|
||||||
* lguest_data". The Guest's very first hypercall is to tell the Host where
|
* lguest_data". The Guest's very first hypercall is to tell the Host where
|
||||||
* this is, and then the Guest and Host both publish information in it. :*/
|
* this is, and then the Guest and Host both publish information in it. :*/
|
||||||
@ -113,4 +52,4 @@ struct lguest_data
|
|||||||
};
|
};
|
||||||
extern struct lguest_data lguest_data;
|
extern struct lguest_data lguest_data;
|
||||||
#endif /* __ASSEMBLY__ */
|
#endif /* __ASSEMBLY__ */
|
||||||
#endif /* _ASM_LGUEST_H */
|
#endif /* _LINUX_LGUEST_H */
|
||||||
|
Loading…
Reference in New Issue
Block a user