arch/ia64/include/asm/xen/interface.h

   1 /******************************************************************************
   2  * arch-ia64/hypervisor-if.h
   3  *
   4  * Guest OS interface to IA64 Xen.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to
   8  * deal in the Software without restriction, including without limitation the
   9  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  10  * sell copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Copyright by those who contributed. (in alphabetical order)
  25  *
  26  * Anthony Xu <anthony.xu@intel.com>
  27  * Eddie Dong <eddie.dong@intel.com>
  28  * Fred Yang <fred.yang@intel.com>
  29  * Kevin Tian <kevin.tian@intel.com>
  30  * Alex Williamson <alex.williamson@hp.com>
  31  * Chris Wright <chrisw@sous-sol.org>
  32  * Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
  33  * Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com>
  34  * Hollis Blanchard <hollisb@us.ibm.com>
  35  * Isaku Yamahata <yamahata@valinux.co.jp>
  36  * Jan Beulich <jbeulich@novell.com>
  37  * John Levon <john.levon@sun.com>
  38  * Kazuhiro Suzuki <kaz@jp.fujitsu.com>
  39  * Keir Fraser <keir.fraser@citrix.com>
  40  * Kouya Shimura <kouya@jp.fujitsu.com>
  41  * Masaki Kanno <kanno.masaki@jp.fujitsu.com>
  42  * Matt Chapman <matthewc@hp.com>
  43  * Matthew Chapman <matthewc@hp.com>
  44  * Samuel Thibault <samuel.thibault@eu.citrix.com>
  45  * Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com>
  46  * Tristan Gingold <tgingold@free.fr>
  47  * Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>
  48  * Yutaka Ezaki <yutaka.ezaki@jp.fujitsu.com>
  49  * Zhang Xin <xing.z.zhang@intel.com>
  50  * Zhang xiantao <xiantao.zhang@intel.com>
  51  * dan.magenheimer@hp.com
  52  * ian.pratt@cl.cam.ac.uk
  53  * michael.fetterman@cl.cam.ac.uk
  54  */
  55
  56 #ifndef _ASM_IA64_XEN_INTERFACE_H
  57 #define _ASM_IA64_XEN_INTERFACE_H
  58
  59 #define __DEFINE_GUEST_HANDLE(name, type)       \
  60         typedef struct { type *p; } __guest_handle_ ## name
  61
  62 #define DEFINE_GUEST_HANDLE_STRUCT(name)        \
  63         __DEFINE_GUEST_HANDLE(name, struct name)
  64 #define DEFINE_GUEST_HANDLE(name)       __DEFINE_GUEST_HANDLE(name, name)
  65 #define GUEST_HANDLE(name)              __guest_handle_ ## name
  66 #define GUEST_HANDLE_64(name)           GUEST_HANDLE(name)
  67 #define set_xen_guest_handle(hnd, val)  do { (hnd).p = val; } while (0)
  68
  69 #ifndef __ASSEMBLY__
  70 /* Guest handles for primitive C types. */
  71 __DEFINE_GUEST_HANDLE(uchar, unsigned char);
  72 __DEFINE_GUEST_HANDLE(uint, unsigned int);
  73 __DEFINE_GUEST_HANDLE(ulong, unsigned long);
  74 __DEFINE_GUEST_HANDLE(u64, unsigned long);
  75 DEFINE_GUEST_HANDLE(char);
  76 DEFINE_GUEST_HANDLE(int);
  77 DEFINE_GUEST_HANDLE(long);
  78 DEFINE_GUEST_HANDLE(void);
  79 DEFINE_GUEST_HANDLE(uint64_t);
  80
  81 typedef unsigned long xen_pfn_t;
  82 DEFINE_GUEST_HANDLE(xen_pfn_t);
  83 #define PRI_xen_pfn     "lx"
  84 #endif
  85
  86 /* Arch specific VIRQs definition */
  87 #define VIRQ_ITC        VIRQ_ARCH_0     /* V. Virtual itc timer */
  88 #define VIRQ_MCA_CMC    VIRQ_ARCH_1     /* MCA cmc interrupt */
  89 #define VIRQ_MCA_CPE    VIRQ_ARCH_2     /* MCA cpe interrupt */
  90
  91 /* Maximum number of virtual CPUs in multi-processor guests. */
  92 /* keep sizeof(struct shared_page) <= PAGE_SIZE.
  93  * this is checked in arch/ia64/xen/hypervisor.c. */
  94 #define MAX_VIRT_CPUS   64
  95
  96 #ifndef __ASSEMBLY__
  97
  98 #define INVALID_MFN     (~0UL)
  99
 100 union vac {
 101         unsigned long value;
 102         struct {
 103                 int a_int:1;
 104                 int a_from_int_cr:1;
 105                 int a_to_int_cr:1;
 106                 int a_from_psr:1;
 107                 int a_from_cpuid:1;
 108                 int a_cover:1;
 109                 int a_bsw:1;
 110                 long reserved:57;
 111         };
 112 };
 113
 114 union vdc {
 115         unsigned long value;
 116         struct {
 117                 int d_vmsw:1;
 118                 int d_extint:1;
 119                 int d_ibr_dbr:1;
 120                 int d_pmc:1;
 121                 int d_to_pmd:1;
 122                 int d_itm:1;
 123                 long reserved:58;
 124         };
 125 };
 126
 127 struct mapped_regs {
 128         union vac vac;
 129         union vdc vdc;
 130         unsigned long virt_env_vaddr;
 131         unsigned long reserved1[29];
 132         unsigned long vhpi;
 133         unsigned long reserved2[95];
 134         union {
 135                 unsigned long vgr[16];
 136                 unsigned long bank1_regs[16];   /* bank1 regs (r16-r31)
 137                                                    when bank0 active */
 138         };
 139         union {
 140                 unsigned long vbgr[16];
 141                 unsigned long bank0_regs[16];   /* bank0 regs (r16-r31)
 142                                                    when bank1 active */
 143         };
 144         unsigned long vnat;
 145         unsigned long vbnat;
 146         unsigned long vcpuid[5];
 147         unsigned long reserved3[11];
 148         unsigned long vpsr;
 149         unsigned long vpr;
 150         unsigned long reserved4[76];
 151         union {
 152                 unsigned long vcr[128];
 153                 struct {
 154                         unsigned long dcr;      /* CR0 */
 155                         unsigned long itm;
 156                         unsigned long iva;
 157                         unsigned long rsv1[5];
 158                         unsigned long pta;      /* CR8 */
 159                         unsigned long rsv2[7];
 160                         unsigned long ipsr;     /* CR16 */
 161                         unsigned long isr;
 162                         unsigned long rsv3;
 163                         unsigned long iip;
 164                         unsigned long ifa;
 165                         unsigned long itir;
 166                         unsigned long iipa;
 167                         unsigned long ifs;
 168                         unsigned long iim;      /* CR24 */
 169                         unsigned long iha;
 170                         unsigned long rsv4[38];
 171                         unsigned long lid;      /* CR64 */
 172                         unsigned long ivr;
 173                         unsigned long tpr;
 174                         unsigned long eoi;
 175                         unsigned long irr[4];
 176                         unsigned long itv;      /* CR72 */
 177                         unsigned long pmv;
 178                         unsigned long cmcv;
 179                         unsigned long rsv5[5];
 180                         unsigned long lrr0;     /* CR80 */
 181                         unsigned long lrr1;
 182                         unsigned long rsv6[46];
 183                 };
 184         };
 185         union {
 186                 unsigned long reserved5[128];
 187                 struct {
 188                         unsigned long precover_ifs;
 189                         unsigned long unat;     /* not sure if this is needed
 190                                                    until NaT arch is done */
 191                         int interrupt_collection_enabled; /* virtual psr.ic */
 192
 193                         /* virtual interrupt deliverable flag is
 194                          * evtchn_upcall_mask in shared info area now.
 195                          * interrupt_mask_addr is the address
 196                          * of evtchn_upcall_mask for current vcpu
 197                          */
 198                         unsigned char *interrupt_mask_addr;
 199                         int pending_interruption;
 200                         unsigned char vpsr_pp;
 201                         unsigned char vpsr_dfh;
 202                         unsigned char hpsr_dfh;
 203                         unsigned char hpsr_mfh;
 204                         unsigned long reserved5_1[4];
 205                         int metaphysical_mode;  /* 1 = use metaphys mapping
 206                                                    0 = use virtual */
 207                         int banknum;            /* 0 or 1, which virtual
 208                                                    register bank is active */
 209                         unsigned long rrs[8];   /* region registers */
 210                         unsigned long krs[8];   /* kernel registers */
 211                         unsigned long tmp[16];  /* temp registers
 212                                                    (e.g. for hyperprivops) */
 213
 214                         /* itc paravirtualization
 215                          * vAR.ITC = mAR.ITC + itc_offset
 216                          * itc_last is one which was lastly passed to
 217                          * the guest OS in order to prevent it from
 218                          * going backwords.
 219                          */
 220                         unsigned long itc_offset;
 221                         unsigned long itc_last;
 222                 };
 223         };
 224 };
 225
 226 struct arch_vcpu_info {
 227         /* nothing */
 228 };
 229
 230 /*
 231  * This structure is used for magic page in domain pseudo physical address
 232  * space and the result of XENMEM_machine_memory_map.
 233  * As the XENMEM_machine_memory_map result,
 234  * xen_memory_map::nr_entries indicates the size in bytes
 235  * including struct xen_ia64_memmap_info. Not the number of entries.
 236  */
 237 struct xen_ia64_memmap_info {
 238         uint64_t efi_memmap_size;       /* size of EFI memory map */
 239         uint64_t efi_memdesc_size;      /* size of an EFI memory map
 240                                          * descriptor */
 241         uint32_t efi_memdesc_version;   /* memory descriptor version */
 242         void *memdesc[0];               /* array of efi_memory_desc_t */
 243 };
 244
 245 struct arch_shared_info {
 246         /* PFN of the start_info page.  */
 247         unsigned long start_info_pfn;
 248
 249         /* Interrupt vector for event channel.  */
 250         int evtchn_vector;
 251
 252         /* PFN of memmap_info page */
 253         unsigned int memmap_info_num_pages;     /* currently only = 1 case is
 254                                                    supported. */
 255         unsigned long memmap_info_pfn;
 256
 257         uint64_t pad[31];
 258 };
 259
 260 struct xen_callback {
 261         unsigned long ip;
 262 };
 263 typedef struct xen_callback xen_callback_t;
 264
 265 #endif /* !__ASSEMBLY__ */
 266
 267 /* Size of the shared_info area (this is not related to page size).  */
 268 #define XSI_SHIFT                       14
 269 #define XSI_SIZE                        (1 << XSI_SHIFT)
 270 /* Log size of mapped_regs area (64 KB - only 4KB is used).  */
 271 #define XMAPPEDREGS_SHIFT               12
 272 #define XMAPPEDREGS_SIZE                (1 << XMAPPEDREGS_SHIFT)
 273 /* Offset of XASI (Xen arch shared info) wrt XSI_BASE.  */
 274 #define XMAPPEDREGS_OFS                 XSI_SIZE
 275
 276 /* Hyperprivops.  */
 277 #define HYPERPRIVOP_START               0x1
 278 #define HYPERPRIVOP_RFI                 (HYPERPRIVOP_START + 0x0)
 279 #define HYPERPRIVOP_RSM_DT              (HYPERPRIVOP_START + 0x1)
 280 #define HYPERPRIVOP_SSM_DT              (HYPERPRIVOP_START + 0x2)
 281 #define HYPERPRIVOP_COVER               (HYPERPRIVOP_START + 0x3)
 282 #define HYPERPRIVOP_ITC_D               (HYPERPRIVOP_START + 0x4)
 283 #define HYPERPRIVOP_ITC_I               (HYPERPRIVOP_START + 0x5)
 284 #define HYPERPRIVOP_SSM_I               (HYPERPRIVOP_START + 0x6)
 285 #define HYPERPRIVOP_GET_IVR             (HYPERPRIVOP_START + 0x7)
 286 #define HYPERPRIVOP_GET_TPR             (HYPERPRIVOP_START + 0x8)
 287 #define HYPERPRIVOP_SET_TPR             (HYPERPRIVOP_START + 0x9)
 288 #define HYPERPRIVOP_EOI                 (HYPERPRIVOP_START + 0xa)
 289 #define HYPERPRIVOP_SET_ITM             (HYPERPRIVOP_START + 0xb)
 290 #define HYPERPRIVOP_THASH               (HYPERPRIVOP_START + 0xc)
 291 #define HYPERPRIVOP_PTC_GA              (HYPERPRIVOP_START + 0xd)
 292 #define HYPERPRIVOP_ITR_D               (HYPERPRIVOP_START + 0xe)
 293 #define HYPERPRIVOP_GET_RR              (HYPERPRIVOP_START + 0xf)
 294 #define HYPERPRIVOP_SET_RR              (HYPERPRIVOP_START + 0x10)
 295 #define HYPERPRIVOP_SET_KR              (HYPERPRIVOP_START + 0x11)
 296 #define HYPERPRIVOP_FC                  (HYPERPRIVOP_START + 0x12)
 297 #define HYPERPRIVOP_GET_CPUID           (HYPERPRIVOP_START + 0x13)
 298 #define HYPERPRIVOP_GET_PMD             (HYPERPRIVOP_START + 0x14)
 299 #define HYPERPRIVOP_GET_EFLAG           (HYPERPRIVOP_START + 0x15)
 300 #define HYPERPRIVOP_SET_EFLAG           (HYPERPRIVOP_START + 0x16)
 301 #define HYPERPRIVOP_RSM_BE              (HYPERPRIVOP_START + 0x17)
 302 #define HYPERPRIVOP_GET_PSR             (HYPERPRIVOP_START + 0x18)
 303 #define HYPERPRIVOP_SET_RR0_TO_RR4      (HYPERPRIVOP_START + 0x19)
 304 #define HYPERPRIVOP_MAX                 (0x1a)
 305
 306 /* Fast and light hypercalls.  */
 307 #define __HYPERVISOR_ia64_fast_eoi      __HYPERVISOR_arch_1
 308
 309 /* Xencomm macros.  */
 310 #define XENCOMM_INLINE_MASK             0xf800000000000000UL
 311 #define XENCOMM_INLINE_FLAG             0x8000000000000000UL
 312
 313 #ifndef __ASSEMBLY__
 314
 315 /*
 316  * Optimization features.
 317  * The hypervisor may do some special optimizations for guests. This hypercall
 318  * can be used to switch on/of these special optimizations.
 319  */
 320 #define __HYPERVISOR_opt_feature        0x700UL
 321
 322 #define XEN_IA64_OPTF_OFF               0x0
 323 #define XEN_IA64_OPTF_ON                0x1
 324
 325 /*
 326  * If this feature is switched on, the hypervisor inserts the
 327  * tlb entries without calling the guests traphandler.
 328  * This is useful in guests using region 7 for identity mapping
 329  * like the linux kernel does.
 330  */
 331 #define XEN_IA64_OPTF_IDENT_MAP_REG7    1
 332
 333 /* Identity mapping of region 4 addresses in HVM. */
 334 #define XEN_IA64_OPTF_IDENT_MAP_REG4    2
 335
 336 /* Identity mapping of region 5 addresses in HVM. */
 337 #define XEN_IA64_OPTF_IDENT_MAP_REG5    3
 338
 339 #define XEN_IA64_OPTF_IDENT_MAP_NOT_SET  (0)
 340
 341 struct xen_ia64_opt_feature {
 342         unsigned long cmd;      /* Which feature */
 343         unsigned char on;       /* Switch feature on/off */
 344         union {
 345                 struct {
 346                         /* The page protection bit mask of the pte.
 347                          * This will be or'ed with the pte. */
 348                         unsigned long pgprot;
 349                         unsigned long key;      /* A protection key for itir.*/
 350                 };
 351         };
 352 };
 353
 354 #endif /* __ASSEMBLY__ */
 355
 356 #endif /* _ASM_IA64_XEN_INTERFACE_H */