diff options
Diffstat (limited to 'ANDROID_3.4.5/include/xen/grant_table.h')
| -rw-r--r-- | ANDROID_3.4.5/include/xen/grant_table.h | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/ANDROID_3.4.5/include/xen/grant_table.h b/ANDROID_3.4.5/include/xen/grant_table.h deleted file mode 100644 index 15f8a00f..00000000 --- a/ANDROID_3.4.5/include/xen/grant_table.h +++ /dev/null @@ -1,190 +0,0 @@ -/****************************************************************************** - * grant_table.h - * - * Two sets of functionality: - * 1. Granting foreign access to our memory reservation. - * 2. Accessing others' memory reservations via grant references. - * (i.e., mechanisms for both sender and recipient of grant references) - * - * Copyright (c) 2004-2005, K A Fraser - * Copyright (c) 2005, Christopher Clark - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation; or, when distributed - * separately from the Linux kernel or incorporated into other - * software packages, subject to the following license: - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this source file (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, modify, - * merge, publish, distribute, sublicense, and/or sell copies of the Software, - * and to permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - */ - -#ifndef __ASM_GNTTAB_H__ -#define __ASM_GNTTAB_H__ - -#include <asm/page.h> - -#include <xen/interface/xen.h> -#include <xen/interface/grant_table.h> - -#include <asm/xen/hypervisor.h> - -#include <xen/features.h> - -/* NR_GRANT_FRAMES must be less than or equal to that configured in Xen */ -#define NR_GRANT_FRAMES 4 - -struct gnttab_free_callback { - struct gnttab_free_callback *next; - void (*fn)(void *); - void *arg; - u16 count; -}; - -int gnttab_init(void); -int gnttab_suspend(void); -int gnttab_resume(void); - -int gnttab_grant_foreign_access(domid_t domid, unsigned long frame, - int readonly); -int gnttab_grant_foreign_access_subpage(domid_t domid, unsigned long frame, - int flags, unsigned page_off, - unsigned length); -int gnttab_grant_foreign_access_trans(domid_t domid, int flags, - domid_t trans_domid, - grant_ref_t trans_gref); - -/* - * Are sub-page grants available on this version of Xen? Returns true if they - * are, and false if they're not. - */ -bool gnttab_subpage_grants_available(void); - -/* - * Are transitive grants available on this version of Xen? Returns true if they - * are, and false if they're not. - */ -bool gnttab_trans_grants_available(void); - -/* - * End access through the given grant reference, iff the grant entry is no - * longer in use. Return 1 if the grant entry was freed, 0 if it is still in - * use. - */ -int gnttab_end_foreign_access_ref(grant_ref_t ref, int readonly); - -/* - * Eventually end access through the given grant reference, and once that - * access has been ended, free the given page too. Access will be ended - * immediately iff the grant entry is not in use, otherwise it will happen - * some time later. page may be 0, in which case no freeing will occur. - */ -void gnttab_end_foreign_access(grant_ref_t ref, int readonly, - unsigned long page); - -int gnttab_grant_foreign_transfer(domid_t domid, unsigned long pfn); - -unsigned long gnttab_end_foreign_transfer_ref(grant_ref_t ref); -unsigned long gnttab_end_foreign_transfer(grant_ref_t ref); - -int gnttab_query_foreign_access(grant_ref_t ref); - -/* - * operations on reserved batches of grant references - */ -int gnttab_alloc_grant_references(u16 count, grant_ref_t *pprivate_head); - -void gnttab_free_grant_reference(grant_ref_t ref); - -void gnttab_free_grant_references(grant_ref_t head); - -int gnttab_empty_grant_references(const grant_ref_t *pprivate_head); - -int gnttab_claim_grant_reference(grant_ref_t *pprivate_head); - -void gnttab_release_grant_reference(grant_ref_t *private_head, - grant_ref_t release); - -void gnttab_request_free_callback(struct gnttab_free_callback *callback, - void (*fn)(void *), void *arg, u16 count); -void gnttab_cancel_free_callback(struct gnttab_free_callback *callback); - -void gnttab_grant_foreign_access_ref(grant_ref_t ref, domid_t domid, - unsigned long frame, int readonly); -int gnttab_grant_foreign_access_subpage_ref(grant_ref_t ref, domid_t domid, - unsigned long frame, int flags, - unsigned page_off, - unsigned length); -int gnttab_grant_foreign_access_trans_ref(grant_ref_t ref, domid_t domid, - int flags, domid_t trans_domid, - grant_ref_t trans_gref); - -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, - void **__shared); -int arch_gnttab_map_status(uint64_t *frames, unsigned long nr_gframes, - unsigned long max_nr_gframes, - grant_status_t **__shared); -void arch_gnttab_unmap(void *shared, unsigned long nr_gframes); - -extern unsigned long xen_hvm_resume_frames; -unsigned int gnttab_max_grant_frames(void); - -#define gnttab_map_vaddr(map) ((void *)(map.host_virt_addr)) - -int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops, - struct gnttab_map_grant_ref *kmap_ops, - struct page **pages, unsigned int count); -int gnttab_unmap_refs(struct gnttab_unmap_grant_ref *unmap_ops, - struct page **pages, unsigned int count, bool clear_pte); - -#endif /* __ASM_GNTTAB_H__ */ |