ref: 17f7f6be4e1a316c0f5f26ff70e047aece4de2bc
dir: /sys/src/9/xen/xen-public/tmem.h/
/****************************************************************************** * tmem.h * * Guest OS interface to Xen Transcendent Memory. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (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. * * Copyright (c) 2004, K A Fraser */ #ifndef __XEN_PUBLIC_TMEM_H__ #define __XEN_PUBLIC_TMEM_H__ #include "xen.h" /* version of ABI */ #define TMEM_SPEC_VERSION 1 /* Commands to HYPERVISOR_tmem_op() */ #define TMEM_CONTROL 0 #define TMEM_NEW_POOL 1 #define TMEM_DESTROY_POOL 2 #define TMEM_NEW_PAGE 3 #define TMEM_PUT_PAGE 4 #define TMEM_GET_PAGE 5 #define TMEM_FLUSH_PAGE 6 #define TMEM_FLUSH_OBJECT 7 #define TMEM_READ 8 #define TMEM_WRITE 9 #define TMEM_XCHG 10 /* Privileged commands to HYPERVISOR_tmem_op() */ #define TMEM_AUTH 101 #define TMEM_RESTORE_NEW 102 /* Subops for HYPERVISOR_tmem_op(TMEM_CONTROL) */ #define TMEMC_THAW 0 #define TMEMC_FREEZE 1 #define TMEMC_FLUSH 2 #define TMEMC_DESTROY 3 #define TMEMC_LIST 4 #define TMEMC_SET_WEIGHT 5 #define TMEMC_SET_CAP 6 #define TMEMC_SET_COMPRESS 7 #define TMEMC_QUERY_FREEABLE_MB 8 #define TMEMC_SAVE_BEGIN 10 #define TMEMC_SAVE_GET_VERSION 11 #define TMEMC_SAVE_GET_MAXPOOLS 12 #define TMEMC_SAVE_GET_CLIENT_WEIGHT 13 #define TMEMC_SAVE_GET_CLIENT_CAP 14 #define TMEMC_SAVE_GET_CLIENT_FLAGS 15 #define TMEMC_SAVE_GET_POOL_FLAGS 16 #define TMEMC_SAVE_GET_POOL_NPAGES 17 #define TMEMC_SAVE_GET_POOL_UUID 18 #define TMEMC_SAVE_GET_NEXT_PAGE 19 #define TMEMC_SAVE_GET_NEXT_INV 20 #define TMEMC_SAVE_END 21 #define TMEMC_RESTORE_BEGIN 30 #define TMEMC_RESTORE_PUT_PAGE 32 #define TMEMC_RESTORE_FLUSH_PAGE 33 /* Bits for HYPERVISOR_tmem_op(TMEM_NEW_POOL) */ #define TMEM_POOL_PERSIST 1 #define TMEM_POOL_SHARED 2 #define TMEM_POOL_PRECOMPRESSED 4 #define TMEM_POOL_PAGESIZE_SHIFT 4 #define TMEM_POOL_PAGESIZE_MASK 0xf #define TMEM_POOL_VERSION_SHIFT 24 #define TMEM_POOL_VERSION_MASK 0xff #define TMEM_POOL_RESERVED_BITS 0x00ffff00 /* Bits for client flags (save/restore) */ #define TMEM_CLIENT_COMPRESS 1 #define TMEM_CLIENT_FROZEN 2 /* Special errno values */ #define EFROZEN 1000 #define EEMPTY 1001 #ifndef __ASSEMBLY__ typedef xen_pfn_t tmem_cli_mfn_t; typedef XEN_GUEST_HANDLE(char) tmem_cli_va_t; struct tmem_op { uint32_t cmd; int32_t pool_id; union { struct { uint64_t uuid[2]; uint32_t flags; uint32_t arg1; } creat; /* for cmd == TMEM_NEW_POOL, TMEM_AUTH, TMEM_RESTORE_NEW */ struct { uint32_t subop; uint32_t cli_id; uint32_t arg1; uint32_t arg2; uint64_t oid[3]; tmem_cli_va_t buf; } ctrl; /* for cmd == TMEM_CONTROL */ struct { uint64_t oid[3]; uint32_t index; uint32_t tmem_offset; uint32_t pfn_offset; uint32_t len; tmem_cli_mfn_t cmfn; /* client machine page frame */ } gen; /* for all other cmd ("generic") */ } u; }; typedef struct tmem_op tmem_op_t; DEFINE_XEN_GUEST_HANDLE(tmem_op_t); struct tmem_handle { uint32_t pool_id; uint32_t index; uint64_t oid[3]; }; #endif #endif /* __XEN_PUBLIC_TMEM_H__ */ /* * Local variables: * mode: C * c-file-style: "BSD" * c-basic-offset: 4 * tab-width: 4 * indent-tabs-mode: nil * End: */