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