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xen: add missing definitions for xen grant table which ia64/xen needs

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Add xen handles realted definitions for grant table which ia64/xen
needs.
Pointer argumsnts for ia64/xen hypercall are passed in pseudo physical
address (guest physical address) so that it is required to convert
guest kernel virtual address into pseudo physical address right before
issuing hypercall.
The xen guest handle represents such arguments.
Define necessary handles and helper functions.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Isaku Yamahata 2008-04-02 10:53:52 -07:00 committed by Ingo Molnar
parent 2eb6d5eb48
commit 87e27cf628
3 changed files with 33 additions and 4 deletions
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2
drivers/xen/grant-table.c
View file

@ -470,7 +470,7 @@ static int gnttab_map(unsigned int start_idx, unsigned int end_idx)
setup.dom = DOMID_SELF;
setup.nr_frames = nr_gframes;
setup.frame_list = frames;
set_xen_guest_handle(setup.frame_list, frames);
rc = HYPERVISOR_grant_table_op(GNTTABOP_setup_table, &setup, 1);
if (rc == -ENOSYS) {

24
include/asm-x86/xen/interface.h
View file

@ -22,6 +22,30 @@
#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
#define GUEST_HANDLE(name) __guest_handle_ ## name
#ifdef __XEN__
#if defined(__i386__)
#define set_xen_guest_handle(hnd, val) \
do { \
if (sizeof(hnd) == 8) \
*(uint64_t *)&(hnd) = 0; \
(hnd).p = val; \
} while (0)
#elif defined(__x86_64__)
#define set_xen_guest_handle(hnd, val) do { (hnd).p = val; } while (0)
#endif
#else
#if defined(__i386__)
#define set_xen_guest_handle(hnd, val) \
do { \
if (sizeof(hnd) == 8) \
*(uint64_t *)&(hnd) = 0; \
(hnd) = val; \
} while (0)
#elif defined(__x86_64__)
#define set_xen_guest_handle(hnd, val) do { (hnd) = val; } while (0)
#endif
#endif
#ifndef __ASSEMBLY__
/* Guest handles for primitive C types. */
__DEFINE_GUEST_HANDLE(uchar, unsigned char);

11
include/xen/interface/grant_table.h
View file

@ -185,6 +185,7 @@ struct gnttab_map_grant_ref {
grant_handle_t handle;
uint64_t dev_bus_addr;
};
DEFINE_GUEST_HANDLE_STRUCT(gnttab_map_grant_ref);
/*
* GNTTABOP_unmap_grant_ref: Destroy one or more grant-reference mappings
@ -206,6 +207,7 @@ struct gnttab_unmap_grant_ref {
/* OUT parameters. */
int16_t status; /* GNTST_* */
};
DEFINE_GUEST_HANDLE_STRUCT(gnttab_unmap_grant_ref);
/*
* GNTTABOP_setup_table: Set up a grant table for <dom> comprising at least
@ -223,8 +225,9 @@ struct gnttab_setup_table {
uint32_t nr_frames;
/* OUT parameters. */
int16_t status; /* GNTST_* */
ulong *frame_list;
GUEST_HANDLE(ulong) frame_list;
};
DEFINE_GUEST_HANDLE_STRUCT(gnttab_setup_table);
/*
* GNTTABOP_dump_table: Dump the contents of the grant table to the
@ -237,6 +240,7 @@ struct gnttab_dump_table {
/* OUT parameters. */
int16_t status; /* GNTST_* */
};
DEFINE_GUEST_HANDLE_STRUCT(gnttab_dump_table);
/*
* GNTTABOP_transfer_grant_ref: Transfer <frame> to a foreign domain. The
@ -255,7 +259,7 @@ struct gnttab_transfer {
/* OUT parameters. */
int16_t status;
};
DEFINE_GUEST_HANDLE_STRUCT(gnttab_transfer);
/*
* GNTTABOP_copy: Hypervisor based copy
@ -296,6 +300,7 @@ struct gnttab_copy {
/* OUT parameters. */
int16_t status;
};
DEFINE_GUEST_HANDLE_STRUCT(gnttab_copy);
/*
* GNTTABOP_query_size: Query the current and maximum sizes of the shared
@ -313,7 +318,7 @@ struct gnttab_query_size {
uint32_t max_nr_frames;
int16_t status; /* GNTST_* */
};
DEFINE_GUEST_HANDLE_STRUCT(gnttab_query_size);
/*
* Bitfield values for update_pin_status.flags.