/*
* Copyright (C) 2006 Martin Decky
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef KERN_ia32xen_HYPERCALL_H_
#define KERN_ia32xen_HYPERCALL_H_
#include <arch/types.h>
#include <macros.h>
typedef uint16_t domid_t;
typedef struct {
uint8_t vector; /**< Exception vector */
uint8_t flags; /**< 0-3: privilege level; 4: clear event enable */
uint16_t cs; /**< Code selector */
void *address; /**< Code offset */
} trap_info_t;
typedef struct {
evtchn_t port;
} evtchn_send_t;
typedef struct {
uint32_t cmd;
union {
evtchn_send_t send;
};
} evtchn_op_t;
#define XEN_SET_TRAP_TABLE 0
#define XEN_MMU_UPDATE 1
#define XEN_SET_CALLBACKS 4
#define XEN_UPDATE_VA_MAPPING 14
#define XEN_EVENT_CHANNEL_OP 16
#define XEN_VERSION 17
#define XEN_CONSOLE_IO 18
#define XEN_VM_ASSIST 21
#define XEN_MMUEXT_OP 26
/*
* Commands for XEN_CONSOLE_IO
*/
#define CONSOLE_IO_WRITE 0
#define CONSOLE_IO_READ 1
#define MMUEXT_PIN_L1_TABLE 0
#define MMUEXT_PIN_L2_TABLE 1
#define MMUEXT_PIN_L3_TABLE 2
#define MMUEXT_PIN_L4_TABLE 3
#define MMUEXT_UNPIN_TABLE 4
#define MMUEXT_NEW_BASEPTR 5
#define MMUEXT_TLB_FLUSH_LOCAL 6
#define MMUEXT_INVLPG_LOCAL 7
#define MMUEXT_TLB_FLUSH_MULTI 8
#define MMUEXT_INVLPG_MULTI 9
#define MMUEXT_TLB_FLUSH_ALL 10
#define MMUEXT_INVLPG_ALL 11
#define MMUEXT_FLUSH_CACHE 12
#define MMUEXT_SET_LDT 13
#define MMUEXT_NEW_USER_BASEPTR 15
#define EVTCHNOP_SEND 4
#define UVMF_NONE 0 /**< No flushing at all */
#define UVMF_TLB_FLUSH 1 /**< Flush entire TLB(s) */
#define UVMF_INVLPG 2 /**< Flush only one entry */
#define UVMF_FLUSHTYPE_MASK 3
#define UVMF_MULTI 0 /**< Flush subset of TLBs */
#define UVMF_LOCAL 0 /**< Flush local TLB */
#define UVMF_ALL (1 << 2) /**< Flush all TLBs */
/*
* Commands to XEN_VM_ASSIST
*/
#define VMASST_CMD_ENABLE 0
#define VMASST_CMD_DISABLE 1
#define VMASST_TYPE_4GB_SEGMENTS 0
#define VMASST_TYPE_4GB_SEGMENTS_NOTIFY 1
#define VMASST_TYPE_WRITABLE_PAGETABLES 2
#define DOMID_SELF (0x7FF0U)
#define DOMID_IO (0x7FF1U)
#define force_evtchn_callback() ((void) xen_version(0, 0))
#define hypercall0(id) \
({ \
unative_t ret; \
asm volatile ( \
"call hypercall_page + (" STRING(id) " * 32)\n" \
: "=a" (ret) \
: \
: "memory" \
); \
ret; \
})
#define hypercall1(id, p1) \
({ \
unative_t ret, __ign1; \
asm volatile ( \
"call hypercall_page + (" STRING(id) " * 32)\n" \
: "=a" (ret), \
"=b" (__ign1) \
: "1" (p1) \
: "memory" \
); \
ret; \
})
#define hypercall2(id, p1, p2) \
({ \
unative_t ret, __ign1, __ign2; \
asm volatile ( \
"call hypercall_page + (" STRING(id) " * 32)\n" \
: "=a" (ret), \
"=b" (__ign1), \
"=c" (__ign2) \
: "1" (p1), \
"2" (p2) \
: "memory" \
); \
ret; \
})
#define hypercall3(id, p1, p2, p3) \
({ \
unative_t ret, __ign1, __ign2, __ign3; \
asm volatile ( \
"call hypercall_page + (" STRING(id) " * 32)\n" \
: "=a" (ret), \
"=b" (__ign1), \
"=c" (__ign2), \
"=d" (__ign3) \
: "1" (p1), \
"2" (p2), \
"3" (p3) \
: "memory" \
); \
ret; \
})
#define hypercall4(id, p1, p2, p3, p4) \
({ \
unative_t ret, __ign1, __ign2, __ign3, __ign4; \
asm volatile ( \
"call hypercall_page + (" STRING(id) " * 32)\n" \
: "=a" (ret), \
"=b" (__ign1), \
"=c" (__ign2), \
"=d" (__ign3), \
"=S" (__ign4) \
: "1" (p1), \
"2" (p2), \
"3" (p3), \
"4" (p4) \
: "memory" \
); \
ret; \
})
#define hypercall5(id, p1, p2, p3, p4, p5) \
({ \
unative_t ret, __ign1, __ign2, __ign3, __ign4, __ign5; \
asm volatile ( \
"call hypercall_page + (" STRING(id) " * 32)\n" \
: "=a" (ret), \
"=b" (__ign1), \
"=c" (__ign2), \
"=d" (__ign3), \
"=S" (__ign4), \
"=D" (__ign5) \
: "1" (p1), \
"2" (p2), \
"3" (p3), \
"4" (p4), \
"5" (p5) \
: "memory" \
); \
ret; \
})
static inline int xen_console_io(const unsigned int cmd, const unsigned int count, const char *str)
{
return hypercall3(XEN_CONSOLE_IO, cmd, count, str);
}
static inline int xen_vm_assist(const unsigned int cmd, const unsigned int type)
{
return hypercall2(XEN_VM_ASSIST, cmd, type);
}
static inline int xen_set_callbacks(const unsigned int event_selector, const void *event_address, const unsigned int failsafe_selector, void *failsafe_address)
{
return hypercall4(XEN_SET_CALLBACKS, event_selector, event_address, failsafe_selector, failsafe_address);
}
static inline int xen_set_trap_table(const trap_info_t *table)
{
return hypercall1(XEN_SET_TRAP_TABLE, table);
}
static inline int xen_version(const unsigned int cmd, const void *arg)
{
return hypercall2(XEN_VERSION, cmd, arg);
}
static inline int xen_notify_remote(evtchn_t channel)
{
evtchn_op_t op;
op.cmd = EVTCHNOP_SEND;
op.send.port = channel;
return hypercall1(XEN_EVENT_CHANNEL_OP, &op);
}
#endif