summaryrefslogtreecommitdiffstats
path: root/include/xen/interface/physdev.h
blob: 610dba9b620acdad3f5f9410c01a6d992bb5385b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
/*
 * 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.
 */

#ifndef __XEN_PUBLIC_PHYSDEV_H__
#define __XEN_PUBLIC_PHYSDEV_H__

/*
 * Prototype for this hypercall is:
 *  int physdev_op(int cmd, void *args)
 * @cmd	 == PHYSDEVOP_??? (physdev operation).
 * @args == Operation-specific extra arguments (NULL if none).
 */

/*
 * Notify end-of-interrupt (EOI) for the specified IRQ.
 * @arg == pointer to physdev_eoi structure.
 */
#define PHYSDEVOP_eoi			12
struct physdev_eoi {
	/* IN */
	uint32_t irq;
};

/*
 * Register a shared page for the hypervisor to indicate whether the guest
 * must issue PHYSDEVOP_eoi. The semantics of PHYSDEVOP_eoi change slightly
 * once the guest used this function in that the associated event channel
 * will automatically get unmasked. The page registered is used as a bit
 * array indexed by Xen's PIRQ value.
 */
#define PHYSDEVOP_pirq_eoi_gmfn_v1       17
/*
 * Register a shared page for the hypervisor to indicate whether the
 * guest must issue PHYSDEVOP_eoi. This hypercall is very similar to
 * PHYSDEVOP_pirq_eoi_gmfn_v1 but it doesn't change the semantics of
 * PHYSDEVOP_eoi. The page registered is used as a bit array indexed by
 * Xen's PIRQ value.
 */
#define PHYSDEVOP_pirq_eoi_gmfn_v2       28
struct physdev_pirq_eoi_gmfn {
    /* IN */
    xen_ulong_t gmfn;
};

/*
 * Query the status of an IRQ line.
 * @arg == pointer to physdev_irq_status_query structure.
 */
#define PHYSDEVOP_irq_status_query	 5
struct physdev_irq_status_query {
	/* IN */
	uint32_t irq;
	/* OUT */
	uint32_t flags; /* XENIRQSTAT_* */
};

/* Need to call PHYSDEVOP_eoi when the IRQ has been serviced? */
#define _XENIRQSTAT_needs_eoi	(0)
#define	 XENIRQSTAT_needs_eoi	(1U<<_XENIRQSTAT_needs_eoi)

/* IRQ shared by multiple guests? */
#define _XENIRQSTAT_shared	(1)
#define	 XENIRQSTAT_shared	(1U<<_XENIRQSTAT_shared)

/*
 * Set the current VCPU's I/O privilege level.
 * @arg == pointer to physdev_set_iopl structure.
 */
#define PHYSDEVOP_set_iopl		 6
struct physdev_set_iopl {
	/* IN */
	uint32_t iopl;
};

/*
 * Set the current VCPU's I/O-port permissions bitmap.
 * @arg == pointer to physdev_set_iobitmap structure.
 */
#define PHYSDEVOP_set_iobitmap		 7
struct physdev_set_iobitmap {
	/* IN */
	uint8_t * bitmap;
	uint32_t nr_ports;
};

/*
 * Read or write an IO-APIC register.
 * @arg == pointer to physdev_apic structure.
 */
#define PHYSDEVOP_apic_read		 8
#define PHYSDEVOP_apic_write		 9
struct physdev_apic {
	/* IN */
	unsigned long apic_physbase;
	uint32_t reg;
	/* IN or OUT */
	uint32_t value;
};

/*
 * Allocate or free a physical upcall vector for the specified IRQ line.
 * @arg == pointer to physdev_irq structure.
 */
#define PHYSDEVOP_alloc_irq_vector	10
#define PHYSDEVOP_free_irq_vector	11
struct physdev_irq {
	/* IN */
	uint32_t irq;
	/* IN or OUT */
	uint32_t vector;
};

#define MAP_PIRQ_TYPE_MSI		0x0
#define MAP_PIRQ_TYPE_GSI		0x1
#define MAP_PIRQ_TYPE_UNKNOWN		0x2
#define MAP_PIRQ_TYPE_MSI_SEG		0x3
#define MAP_PIRQ_TYPE_MULTI_MSI		0x4

#define PHYSDEVOP_map_pirq		13
struct physdev_map_pirq {
    domid_t domid;
    /* IN */
    int type;
    /* IN */
    int index;
    /* IN or OUT */
    int pirq;
    /* IN - high 16 bits hold segment for ..._MSI_SEG and ..._MULTI_MSI */
    int bus;
    /* IN */
    int devfn;
    /* IN
     * - For MSI-X contains entry number.
     * - For MSI with ..._MULTI_MSI contains number of vectors.
     * OUT (..._MULTI_MSI only)
     * - Number of vectors allocated.
     */
    int entry_nr;
    /* IN */
    uint64_t table_base;
};

#define PHYSDEVOP_unmap_pirq		14
struct physdev_unmap_pirq {
    domid_t domid;
    /* IN */
    int pirq;
};

#define PHYSDEVOP_manage_pci_add	15
#define PHYSDEVOP_manage_pci_remove	16
struct physdev_manage_pci {
	/* IN */
	uint8_t bus;
	uint8_t devfn;
};

#define PHYSDEVOP_restore_msi            19
struct physdev_restore_msi {
	/* IN */
	uint8_t bus;
	uint8_t devfn;
};

#define PHYSDEVOP_manage_pci_add_ext	20
struct physdev_manage_pci_ext {
	/* IN */
	uint8_t bus;
	uint8_t devfn;
	unsigned is_extfn;
	unsigned is_virtfn;
	struct {
		uint8_t bus;
		uint8_t devfn;
	} physfn;
};

/*
 * Argument to physdev_op_compat() hypercall. Superceded by new physdev_op()
 * hypercall since 0x00030202.
 */
struct physdev_op {
	uint32_t cmd;
	union {
		struct physdev_irq_status_query	     irq_status_query;
		struct physdev_set_iopl		     set_iopl;
		struct physdev_set_iobitmap	     set_iobitmap;
		struct physdev_apic		     apic_op;
		struct physdev_irq		     irq_op;
	} u;
};

#define PHYSDEVOP_setup_gsi    21
struct physdev_setup_gsi {
    int gsi;
    /* IN */
    uint8_t triggering;
    /* IN */
    uint8_t polarity;
    /* IN */
};

#define PHYSDEVOP_get_nr_pirqs    22
struct physdev_nr_pirqs {
    /* OUT */
    uint32_t nr_pirqs;
};

/* type is MAP_PIRQ_TYPE_GSI or MAP_PIRQ_TYPE_MSI
 * the hypercall returns a free pirq */
#define PHYSDEVOP_get_free_pirq    23
struct physdev_get_free_pirq {
    /* IN */ 
    int type;
    /* OUT */
    uint32_t pirq;
};

#define XEN_PCI_DEV_EXTFN              0x1
#define XEN_PCI_DEV_VIRTFN             0x2
#define XEN_PCI_DEV_PXM                0x4

#define XEN_PCI_MMCFG_RESERVED         0x1

#define PHYSDEVOP_pci_mmcfg_reserved    24
struct physdev_pci_mmcfg_reserved {
    uint64_t address;
    uint16_t segment;
    uint8_t start_bus;
    uint8_t end_bus;
    uint32_t flags;
};

#define PHYSDEVOP_pci_device_add        25
struct physdev_pci_device_add {
    /* IN */
    uint16_t seg;
    uint8_t bus;
    uint8_t devfn;
    uint32_t flags;
    struct {
        uint8_t bus;
        uint8_t devfn;
    } physfn;
#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
    uint32_t optarr[];
#elif defined(__GNUC__)
    uint32_t optarr[0];
#endif
};

#define PHYSDEVOP_pci_device_remove     26
#define PHYSDEVOP_restore_msi_ext       27
/*
 * Dom0 should use these two to announce MMIO resources assigned to
 * MSI-X capable devices won't (prepare) or may (release) change.
 */
#define PHYSDEVOP_prepare_msix          30
#define PHYSDEVOP_release_msix          31
struct physdev_pci_device {
    /* IN */
    uint16_t seg;
    uint8_t bus;
    uint8_t devfn;
};

#define PHYSDEVOP_DBGP_RESET_PREPARE    1
#define PHYSDEVOP_DBGP_RESET_DONE       2

#define PHYSDEVOP_DBGP_BUS_UNKNOWN      0
#define PHYSDEVOP_DBGP_BUS_PCI          1

#define PHYSDEVOP_dbgp_op               29
struct physdev_dbgp_op {
    /* IN */
    uint8_t op;
    uint8_t bus;
    union {
        struct physdev_pci_device pci;
    } u;
};

/*
 * Notify that some PIRQ-bound event channels have been unmasked.
 * ** This command is obsolete since interface version 0x00030202 and is **
 * ** unsupported by newer versions of Xen.				 **
 */
#define PHYSDEVOP_IRQ_UNMASK_NOTIFY	 4

/*
 * These all-capitals physdev operation names are superceded by the new names
 * (defined above) since interface version 0x00030202.
 */
#define PHYSDEVOP_IRQ_STATUS_QUERY	 PHYSDEVOP_irq_status_query
#define PHYSDEVOP_SET_IOPL		 PHYSDEVOP_set_iopl
#define PHYSDEVOP_SET_IOBITMAP		 PHYSDEVOP_set_iobitmap
#define PHYSDEVOP_APIC_READ		 PHYSDEVOP_apic_read
#define PHYSDEVOP_APIC_WRITE		 PHYSDEVOP_apic_write
#define PHYSDEVOP_ASSIGN_VECTOR		 PHYSDEVOP_alloc_irq_vector
#define PHYSDEVOP_FREE_VECTOR		 PHYSDEVOP_free_irq_vector
#define PHYSDEVOP_IRQ_NEEDS_UNMASK_NOTIFY XENIRQSTAT_needs_eoi
#define PHYSDEVOP_IRQ_SHARED		 XENIRQSTAT_shared

#endif /* __XEN_PUBLIC_PHYSDEV_H__ */