Messages in this thread Patch in this message | | | From | stefano.stabellini@eu ... | Subject | [PATCH 01/12] xen: define gnttab_set_map_op/unmap_op | Date | Mon, 10 Jan 2011 10:36:30 +0000 |
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From: Ian Campbell <ian.campbell@citrix.com>
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> --- 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 9a73170..1821aa1 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); -- 1.5.6.5
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