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interface.h
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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 <[email protected]>
27  * Eddie Dong <[email protected]>
28  * Fred Yang <[email protected]>
29  * Kevin Tian <[email protected]>
30  * Alex Williamson <[email protected]>
31  * Chris Wright <[email protected]>
32  * Christian Limpach <[email protected]>
33  * Dietmar Hahn <[email protected]>
34  * Hollis Blanchard <[email protected]>
35  * Isaku Yamahata <[email protected]>
36  * Jan Beulich <[email protected]>
37  * John Levon <[email protected]>
38  * Kazuhiro Suzuki <[email protected]>
39  * Keir Fraser <[email protected]>
40  * Kouya Shimura <[email protected]>
41  * Masaki Kanno <[email protected]>
42  * Matt Chapman <[email protected]>
43  * Matthew Chapman <[email protected]>
44  * Samuel Thibault <[email protected]>
45  * Tomonari Horikoshi <[email protected]>
46  * Tristan Gingold <[email protected]>
47  * Tsunehisa Doi <[email protected]>
48  * Yutaka Ezaki <[email protected]>
49  * Zhang Xin <[email protected]>
50  * Zhang xiantao <[email protected]>
51  * [email protected]
52  * [email protected]
53  * [email protected]
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 /* Explicitly size integers that represent pfns in the public interface
71  * with Xen so that we could have one ABI that works for 32 and 64 bit
72  * guests. */
73 typedef unsigned long xen_pfn_t;
74 typedef unsigned long xen_ulong_t;
75 /* Guest handles for primitive C types. */
76 __DEFINE_GUEST_HANDLE(uchar, unsigned char);
77 __DEFINE_GUEST_HANDLE(uint, unsigned int);
78 __DEFINE_GUEST_HANDLE(ulong, unsigned long);
79 
80 DEFINE_GUEST_HANDLE(char);
81 DEFINE_GUEST_HANDLE(int);
82 DEFINE_GUEST_HANDLE(long);
83 DEFINE_GUEST_HANDLE(void);
84 DEFINE_GUEST_HANDLE(uint64_t);
85 DEFINE_GUEST_HANDLE(uint32_t);
86 
87 DEFINE_GUEST_HANDLE(xen_pfn_t);
88 #define PRI_xen_pfn "lx"
89 #endif
90 
91 /* Arch specific VIRQs definition */
92 #define VIRQ_ITC VIRQ_ARCH_0 /* V. Virtual itc timer */
93 #define VIRQ_MCA_CMC VIRQ_ARCH_1 /* MCA cmc interrupt */
94 #define VIRQ_MCA_CPE VIRQ_ARCH_2 /* MCA cpe interrupt */
95 
96 /* Maximum number of virtual CPUs in multi-processor guests. */
97 /* keep sizeof(struct shared_page) <= PAGE_SIZE.
98  * this is checked in arch/ia64/xen/hypervisor.c. */
99 #define MAX_VIRT_CPUS 64
100 
101 #ifndef __ASSEMBLY__
102 
103 #define INVALID_MFN (~0UL)
104 
105 union vac {
106  unsigned long value;
107  struct {
108  int a_int:1;
109  int a_from_int_cr:1;
110  int a_to_int_cr:1;
111  int a_from_psr:1;
112  int a_from_cpuid:1;
113  int a_cover:1;
114  int a_bsw:1;
115  long reserved:57;
116  };
117 };
118 
119 union vdc {
120  unsigned long value;
121  struct {
122  int d_vmsw:1;
123  int d_extint:1;
124  int d_ibr_dbr:1;
125  int d_pmc:1;
126  int d_to_pmd:1;
127  int d_itm:1;
128  long reserved:58;
129  };
130 };
131 
132 struct mapped_regs {
133  union vac vac;
134  union vdc vdc;
135  unsigned long virt_env_vaddr;
136  unsigned long reserved1[29];
137  unsigned long vhpi;
138  unsigned long reserved2[95];
139  union {
140  unsigned long vgr[16];
141  unsigned long bank1_regs[16]; /* bank1 regs (r16-r31)
142  when bank0 active */
143  };
144  union {
145  unsigned long vbgr[16];
146  unsigned long bank0_regs[16]; /* bank0 regs (r16-r31)
147  when bank1 active */
148  };
149  unsigned long vnat;
150  unsigned long vbnat;
151  unsigned long vcpuid[5];
152  unsigned long reserved3[11];
153  unsigned long vpsr;
154  unsigned long vpr;
155  unsigned long reserved4[76];
156  union {
157  unsigned long vcr[128];
158  struct {
159  unsigned long dcr; /* CR0 */
160  unsigned long itm;
161  unsigned long iva;
162  unsigned long rsv1[5];
163  unsigned long pta; /* CR8 */
164  unsigned long rsv2[7];
165  unsigned long ipsr; /* CR16 */
166  unsigned long isr;
167  unsigned long rsv3;
168  unsigned long iip;
169  unsigned long ifa;
170  unsigned long itir;
171  unsigned long iipa;
172  unsigned long ifs;
173  unsigned long iim; /* CR24 */
174  unsigned long iha;
175  unsigned long rsv4[38];
176  unsigned long lid; /* CR64 */
177  unsigned long ivr;
178  unsigned long tpr;
179  unsigned long eoi;
180  unsigned long irr[4];
181  unsigned long itv; /* CR72 */
182  unsigned long pmv;
183  unsigned long cmcv;
184  unsigned long rsv5[5];
185  unsigned long lrr0; /* CR80 */
186  unsigned long lrr1;
187  unsigned long rsv6[46];
188  };
189  };
190  union {
191  unsigned long reserved5[128];
192  struct {
193  unsigned long precover_ifs;
194  unsigned long unat; /* not sure if this is needed
195  until NaT arch is done */
196  int interrupt_collection_enabled; /* virtual psr.ic */
197 
198  /* virtual interrupt deliverable flag is
199  * evtchn_upcall_mask in shared info area now.
200  * interrupt_mask_addr is the address
201  * of evtchn_upcall_mask for current vcpu
202  */
203  unsigned char *interrupt_mask_addr;
204  int pending_interruption;
205  unsigned char vpsr_pp;
206  unsigned char vpsr_dfh;
207  unsigned char hpsr_dfh;
208  unsigned char hpsr_mfh;
209  unsigned long reserved5_1[4];
210  int metaphysical_mode; /* 1 = use metaphys mapping
211  0 = use virtual */
212  int banknum; /* 0 or 1, which virtual
213  register bank is active */
214  unsigned long rrs[8]; /* region registers */
215  unsigned long krs[8]; /* kernel registers */
216  unsigned long tmp[16]; /* temp registers
217  (e.g. for hyperprivops) */
218 
219  /* itc paravirtualization
220  * vAR.ITC = mAR.ITC + itc_offset
221  * itc_last is one which was lastly passed to
222  * the guest OS in order to prevent it from
223  * going backwords.
224  */
225  unsigned long itc_offset;
226  unsigned long itc_last;
227  };
228  };
229 };
230 
231 struct arch_vcpu_info {
232  /* nothing */
233 };
234 
235 /*
236  * This structure is used for magic page in domain pseudo physical address
237  * space and the result of XENMEM_machine_memory_map.
238  * As the XENMEM_machine_memory_map result,
239  * xen_memory_map::nr_entries indicates the size in bytes
240  * including struct xen_ia64_memmap_info. Not the number of entries.
241  */
242 struct xen_ia64_memmap_info {
243  uint64_t efi_memmap_size; /* size of EFI memory map */
244  uint64_t efi_memdesc_size; /* size of an EFI memory map
245  * descriptor */
246  uint32_t efi_memdesc_version; /* memory descriptor version */
247  void *memdesc[0]; /* array of efi_memory_desc_t */
248 };
249 
250 struct arch_shared_info {
251  /* PFN of the start_info page. */
252  unsigned long start_info_pfn;
253 
254  /* Interrupt vector for event channel. */
255  int evtchn_vector;
256 
257  /* PFN of memmap_info page */
258  unsigned int memmap_info_num_pages; /* currently only = 1 case is
259  supported. */
260  unsigned long memmap_info_pfn;
261 
262  uint64_t pad[31];
263 };
264 
265 struct xen_callback {
266  unsigned long ip;
267 };
268 typedef struct xen_callback xen_callback_t;
269 
270 #endif /* !__ASSEMBLY__ */
271 
272 #include <asm/pvclock-abi.h>
273 
274 /* Size of the shared_info area (this is not related to page size). */
275 #define XSI_SHIFT 14
276 #define XSI_SIZE (1 << XSI_SHIFT)
277 /* Log size of mapped_regs area (64 KB - only 4KB is used). */
278 #define XMAPPEDREGS_SHIFT 12
279 #define XMAPPEDREGS_SIZE (1 << XMAPPEDREGS_SHIFT)
280 /* Offset of XASI (Xen arch shared info) wrt XSI_BASE. */
281 #define XMAPPEDREGS_OFS XSI_SIZE
282 
283 /* Hyperprivops. */
284 #define HYPERPRIVOP_START 0x1
285 #define HYPERPRIVOP_RFI (HYPERPRIVOP_START + 0x0)
286 #define HYPERPRIVOP_RSM_DT (HYPERPRIVOP_START + 0x1)
287 #define HYPERPRIVOP_SSM_DT (HYPERPRIVOP_START + 0x2)
288 #define HYPERPRIVOP_COVER (HYPERPRIVOP_START + 0x3)
289 #define HYPERPRIVOP_ITC_D (HYPERPRIVOP_START + 0x4)
290 #define HYPERPRIVOP_ITC_I (HYPERPRIVOP_START + 0x5)
291 #define HYPERPRIVOP_SSM_I (HYPERPRIVOP_START + 0x6)
292 #define HYPERPRIVOP_GET_IVR (HYPERPRIVOP_START + 0x7)
293 #define HYPERPRIVOP_GET_TPR (HYPERPRIVOP_START + 0x8)
294 #define HYPERPRIVOP_SET_TPR (HYPERPRIVOP_START + 0x9)
295 #define HYPERPRIVOP_EOI (HYPERPRIVOP_START + 0xa)
296 #define HYPERPRIVOP_SET_ITM (HYPERPRIVOP_START + 0xb)
297 #define HYPERPRIVOP_THASH (HYPERPRIVOP_START + 0xc)
298 #define HYPERPRIVOP_PTC_GA (HYPERPRIVOP_START + 0xd)
299 #define HYPERPRIVOP_ITR_D (HYPERPRIVOP_START + 0xe)
300 #define HYPERPRIVOP_GET_RR (HYPERPRIVOP_START + 0xf)
301 #define HYPERPRIVOP_SET_RR (HYPERPRIVOP_START + 0x10)
302 #define HYPERPRIVOP_SET_KR (HYPERPRIVOP_START + 0x11)
303 #define HYPERPRIVOP_FC (HYPERPRIVOP_START + 0x12)
304 #define HYPERPRIVOP_GET_CPUID (HYPERPRIVOP_START + 0x13)
305 #define HYPERPRIVOP_GET_PMD (HYPERPRIVOP_START + 0x14)
306 #define HYPERPRIVOP_GET_EFLAG (HYPERPRIVOP_START + 0x15)
307 #define HYPERPRIVOP_SET_EFLAG (HYPERPRIVOP_START + 0x16)
308 #define HYPERPRIVOP_RSM_BE (HYPERPRIVOP_START + 0x17)
309 #define HYPERPRIVOP_GET_PSR (HYPERPRIVOP_START + 0x18)
310 #define HYPERPRIVOP_SET_RR0_TO_RR4 (HYPERPRIVOP_START + 0x19)
311 #define HYPERPRIVOP_MAX (0x1a)
312 
313 /* Fast and light hypercalls. */
314 #define __HYPERVISOR_ia64_fast_eoi __HYPERVISOR_arch_1
315 
316 /* Xencomm macros. */
317 #define XENCOMM_INLINE_MASK 0xf800000000000000UL
318 #define XENCOMM_INLINE_FLAG 0x8000000000000000UL
319 
320 #ifndef __ASSEMBLY__
321 
322 /*
323  * Optimization features.
324  * The hypervisor may do some special optimizations for guests. This hypercall
325  * can be used to switch on/of these special optimizations.
326  */
327 #define __HYPERVISOR_opt_feature 0x700UL
328 
329 #define XEN_IA64_OPTF_OFF 0x0
330 #define XEN_IA64_OPTF_ON 0x1
331 
332 /*
333  * If this feature is switched on, the hypervisor inserts the
334  * tlb entries without calling the guests traphandler.
335  * This is useful in guests using region 7 for identity mapping
336  * like the linux kernel does.
337  */
338 #define XEN_IA64_OPTF_IDENT_MAP_REG7 1
339 
340 /* Identity mapping of region 4 addresses in HVM. */
341 #define XEN_IA64_OPTF_IDENT_MAP_REG4 2
342 
343 /* Identity mapping of region 5 addresses in HVM. */
344 #define XEN_IA64_OPTF_IDENT_MAP_REG5 3
345 
346 #define XEN_IA64_OPTF_IDENT_MAP_NOT_SET (0)
347 
348 struct xen_ia64_opt_feature {
349  unsigned long cmd; /* Which feature */
350  unsigned char on; /* Switch feature on/off */
351  union {
352  struct {
353  /* The page protection bit mask of the pte.
354  * This will be or'ed with the pte. */
355  unsigned long pgprot;
356  unsigned long key; /* A protection key for itir.*/
357  };
358  };
359 };
360 
361 #endif /* __ASSEMBLY__ */
362 
363 #endif /* _ASM_IA64_XEN_INTERFACE_H */
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