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| author | Ian Campbell <ian.campbell@citrix.com> | 2009-02-09 21:05:49 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-01-11 20:30:34 +0100 |
| commit | f07745325cbd93afc5d8bcf7539a063d33134075 (patch) | |
| tree | e75f7d15f3559e00708bfdd33b67fdd1637eac69 /include/xen | |
| parent | Linux 2.6.37 (diff) | |
| download | linux-f07745325cbd93afc5d8bcf7539a063d33134075.tar.xz linux-f07745325cbd93afc5d8bcf7539a063d33134075.zip | |
xen: define gnttab_set_map_op/unmap_op
Impact: hypercall definitions
These functions populate the gnttab data structures used by the
granttab map and unmap ops and are used in the backend drivers.
Originally xen-unstable.hg 9625:c3bb51c443a7
[ Include Stefano's fix for phys_addr_t ]
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'include/xen')
| -rw-r--r-- | include/xen/grant_table.h | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/include/xen/grant_table.h b/include/xen/grant_table.h index 9a731706a016..1821aa103d82 100644 --- a/include/xen/grant_table.h +++ b/include/xen/grant_table.h @@ -37,10 +37,16 @@ #ifndef __ASM_GNTTAB_H__ #define __ASM_GNTTAB_H__ -#include <asm/xen/hypervisor.h> +#include <asm/page.h> + +#include <xen/interface/xen.h> #include <xen/interface/grant_table.h> + +#include <asm/xen/hypervisor.h> #include <asm/xen/grant_table.h> +#include <xen/features.h> + /* NR_GRANT_FRAMES must be less than or equal to that configured in Xen */ #define NR_GRANT_FRAMES 4 @@ -107,6 +113,37 @@ void gnttab_grant_foreign_access_ref(grant_ref_t ref, domid_t domid, void gnttab_grant_foreign_transfer_ref(grant_ref_t, domid_t domid, unsigned long pfn); +static inline void +gnttab_set_map_op(struct gnttab_map_grant_ref *map, phys_addr_t addr, + uint32_t flags, grant_ref_t ref, domid_t domid) +{ + if (flags & GNTMAP_contains_pte) + map->host_addr = addr; + else if (xen_feature(XENFEAT_auto_translated_physmap)) + map->host_addr = __pa(addr); + else + map->host_addr = addr; + + map->flags = flags; + map->ref = ref; + map->dom = domid; +} + +static inline void +gnttab_set_unmap_op(struct gnttab_unmap_grant_ref *unmap, phys_addr_t addr, + uint32_t flags, grant_handle_t handle) +{ + if (flags & GNTMAP_contains_pte) + unmap->host_addr = addr; + else if (xen_feature(XENFEAT_auto_translated_physmap)) + unmap->host_addr = __pa(addr); + else + unmap->host_addr = addr; + + unmap->handle = handle; + unmap->dev_bus_addr = 0; +} + int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes, unsigned long max_nr_gframes, struct grant_entry **__shared); |