projects/linux·blob 9e795d94 · refs

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1/*
2 * Permission is hereby granted, free of charge, to any person obtaining a copy
3 * of this software and associated documentation files (the "Software"), to
4 * deal in the Software without restriction, including without limitation the
5 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
6 * sell copies of the Software, and to permit persons to whom the Software is
7 * furnished to do so, subject to the following conditions:
8 *
9 * The above copyright notice and this permission notice shall be included in
10 * all copies or substantial portions of the Software.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
15 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
16 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
17 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
18 * DEALINGS IN THE SOFTWARE.
19 */
20
21#ifndef __XEN_PUBLIC_PHYSDEV_H__
22#define __XEN_PUBLIC_PHYSDEV_H__
23
24/*
25 * Prototype for this hypercall is:
26 * int physdev_op(int cmd, void *args)
27 * @cmd == PHYSDEVOP_??? (physdev operation).
28 * @args == Operation-specific extra arguments (NULL if none).
29 */
30
31/*
32 * Notify end-of-interrupt (EOI) for the specified IRQ.
33 * @arg == pointer to physdev_eoi structure.
34 */
35#define PHYSDEVOP_eoi 12
36struct physdev_eoi {
37 /* IN */
38 uint32_t irq;
39};
40
41/*
42 * Register a shared page for the hypervisor to indicate whether the guest
43 * must issue PHYSDEVOP_eoi. The semantics of PHYSDEVOP_eoi change slightly
44 * once the guest used this function in that the associated event channel
45 * will automatically get unmasked. The page registered is used as a bit
46 * array indexed by Xen's PIRQ value.
47 */
48#define PHYSDEVOP_pirq_eoi_gmfn_v1 17
49/*
50 * Register a shared page for the hypervisor to indicate whether the
51 * guest must issue PHYSDEVOP_eoi. This hypercall is very similar to
52 * PHYSDEVOP_pirq_eoi_gmfn_v1 but it doesn't change the semantics of
53 * PHYSDEVOP_eoi. The page registered is used as a bit array indexed by
54 * Xen's PIRQ value.
55 */
56#define PHYSDEVOP_pirq_eoi_gmfn_v2 28
57struct physdev_pirq_eoi_gmfn {
58 /* IN */
59 xen_ulong_t gmfn;
60};
61
62/*
63 * Query the status of an IRQ line.
64 * @arg == pointer to physdev_irq_status_query structure.
65 */
66#define PHYSDEVOP_irq_status_query 5
67struct physdev_irq_status_query {
68 /* IN */
69 uint32_t irq;
70 /* OUT */
71 uint32_t flags; /* XENIRQSTAT_* */
72};
73
74/* Need to call PHYSDEVOP_eoi when the IRQ has been serviced? */
75#define _XENIRQSTAT_needs_eoi (0)
76#define XENIRQSTAT_needs_eoi (1U<<_XENIRQSTAT_needs_eoi)
77
78/* IRQ shared by multiple guests? */
79#define _XENIRQSTAT_shared (1)
80#define XENIRQSTAT_shared (1U<<_XENIRQSTAT_shared)
81
82/*
83 * Set the current VCPU's I/O privilege level.
84 * @arg == pointer to physdev_set_iopl structure.
85 */
86#define PHYSDEVOP_set_iopl 6
87struct physdev_set_iopl {
88 /* IN */
89 uint32_t iopl;
90};
91
92/*
93 * Set the current VCPU's I/O-port permissions bitmap.
94 * @arg == pointer to physdev_set_iobitmap structure.
95 */
96#define PHYSDEVOP_set_iobitmap 7
97struct physdev_set_iobitmap {
98 /* IN */
99 uint8_t * bitmap;
100 uint32_t nr_ports;
101};
102
103/*
104 * Read or write an IO-APIC register.
105 * @arg == pointer to physdev_apic structure.
106 */
107#define PHYSDEVOP_apic_read 8
108#define PHYSDEVOP_apic_write 9
109struct physdev_apic {
110 /* IN */
111 unsigned long apic_physbase;
112 uint32_t reg;
113 /* IN or OUT */
114 uint32_t value;
115};
116
117/*
118 * Allocate or free a physical upcall vector for the specified IRQ line.
119 * @arg == pointer to physdev_irq structure.
120 */
121#define PHYSDEVOP_alloc_irq_vector 10
122#define PHYSDEVOP_free_irq_vector 11
123struct physdev_irq {
124 /* IN */
125 uint32_t irq;
126 /* IN or OUT */
127 uint32_t vector;
128};
129
130#define MAP_PIRQ_TYPE_MSI 0x0
131#define MAP_PIRQ_TYPE_GSI 0x1
132#define MAP_PIRQ_TYPE_UNKNOWN 0x2
133#define MAP_PIRQ_TYPE_MSI_SEG 0x3
134#define MAP_PIRQ_TYPE_MULTI_MSI 0x4
135
136#define PHYSDEVOP_map_pirq 13
137struct physdev_map_pirq {
138 domid_t domid;
139 /* IN */
140 int type;
141 /* IN */
142 int index;
143 /* IN or OUT */
144 int pirq;
145 /* IN - high 16 bits hold segment for ..._MSI_SEG and ..._MULTI_MSI */
146 int bus;
147 /* IN */
148 int devfn;
149 /* IN
150 * - For MSI-X contains entry number.
151 * - For MSI with ..._MULTI_MSI contains number of vectors.
152 * OUT (..._MULTI_MSI only)
153 * - Number of vectors allocated.
154 */
155 int entry_nr;
156 /* IN */
157 uint64_t table_base;
158};
159
160#define PHYSDEVOP_unmap_pirq 14
161struct physdev_unmap_pirq {
162 domid_t domid;
163 /* IN */
164 int pirq;
165};
166
167#define PHYSDEVOP_manage_pci_add 15
168#define PHYSDEVOP_manage_pci_remove 16
169struct physdev_manage_pci {
170 /* IN */
171 uint8_t bus;
172 uint8_t devfn;
173};
174
175#define PHYSDEVOP_restore_msi 19
176struct physdev_restore_msi {
177 /* IN */
178 uint8_t bus;
179 uint8_t devfn;
180};
181
182#define PHYSDEVOP_manage_pci_add_ext 20
183struct physdev_manage_pci_ext {
184 /* IN */
185 uint8_t bus;
186 uint8_t devfn;
187 unsigned is_extfn;
188 unsigned is_virtfn;
189 struct {
190 uint8_t bus;
191 uint8_t devfn;
192 } physfn;
193};
194
195/*
196 * Argument to physdev_op_compat() hypercall. Superceded by new physdev_op()
197 * hypercall since 0x00030202.
198 */
199struct physdev_op {
200 uint32_t cmd;
201 union {
202 struct physdev_irq_status_query irq_status_query;
203 struct physdev_set_iopl set_iopl;
204 struct physdev_set_iobitmap set_iobitmap;
205 struct physdev_apic apic_op;
206 struct physdev_irq irq_op;
207 } u;
208};
209
210#define PHYSDEVOP_setup_gsi 21
211struct physdev_setup_gsi {
212 int gsi;
213 /* IN */
214 uint8_t triggering;
215 /* IN */
216 uint8_t polarity;
217 /* IN */
218};
219
220#define PHYSDEVOP_get_nr_pirqs 22
221struct physdev_nr_pirqs {
222 /* OUT */
223 uint32_t nr_pirqs;
224};
225
226/* type is MAP_PIRQ_TYPE_GSI or MAP_PIRQ_TYPE_MSI
227 * the hypercall returns a free pirq */
228#define PHYSDEVOP_get_free_pirq 23
229struct physdev_get_free_pirq {
230 /* IN */
231 int type;
232 /* OUT */
233 uint32_t pirq;
234};
235
236#define XEN_PCI_DEV_EXTFN 0x1
237#define XEN_PCI_DEV_VIRTFN 0x2
238#define XEN_PCI_DEV_PXM 0x4
239
240#define XEN_PCI_MMCFG_RESERVED 0x1
241
242#define PHYSDEVOP_pci_mmcfg_reserved 24
243struct physdev_pci_mmcfg_reserved {
244 uint64_t address;
245 uint16_t segment;
246 uint8_t start_bus;
247 uint8_t end_bus;
248 uint32_t flags;
249};
250
251#define PHYSDEVOP_pci_device_add 25
252struct physdev_pci_device_add {
253 /* IN */
254 uint16_t seg;
255 uint8_t bus;
256 uint8_t devfn;
257 uint32_t flags;
258 struct {
259 uint8_t bus;
260 uint8_t devfn;
261 } physfn;
262#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
263 uint32_t optarr[];
264#elif defined(__GNUC__)
265 uint32_t optarr[0];
266#endif
267};
268
269#define PHYSDEVOP_pci_device_remove 26
270#define PHYSDEVOP_restore_msi_ext 27
271/*
272 * Dom0 should use these two to announce MMIO resources assigned to
273 * MSI-X capable devices won't (prepare) or may (release) change.
274 */
275#define PHYSDEVOP_prepare_msix 30
276#define PHYSDEVOP_release_msix 31
277struct physdev_pci_device {
278 /* IN */
279 uint16_t seg;
280 uint8_t bus;
281 uint8_t devfn;
282};
283
284#define PHYSDEVOP_DBGP_RESET_PREPARE 1
285#define PHYSDEVOP_DBGP_RESET_DONE 2
286
287#define PHYSDEVOP_DBGP_BUS_UNKNOWN 0
288#define PHYSDEVOP_DBGP_BUS_PCI 1
289
290#define PHYSDEVOP_dbgp_op 29
291struct physdev_dbgp_op {
292 /* IN */
293 uint8_t op;
294 uint8_t bus;
295 union {
296 struct physdev_pci_device pci;
297 } u;
298};
299
300/*
301 * Notify that some PIRQ-bound event channels have been unmasked.
302 * ** This command is obsolete since interface version 0x00030202 and is **
303 * ** unsupported by newer versions of Xen. **
304 */
305#define PHYSDEVOP_IRQ_UNMASK_NOTIFY 4
306
307/*
308 * These all-capitals physdev operation names are superceded by the new names
309 * (defined above) since interface version 0x00030202.
310 */
311#define PHYSDEVOP_IRQ_STATUS_QUERY PHYSDEVOP_irq_status_query
312#define PHYSDEVOP_SET_IOPL PHYSDEVOP_set_iopl
313#define PHYSDEVOP_SET_IOBITMAP PHYSDEVOP_set_iobitmap
314#define PHYSDEVOP_APIC_READ PHYSDEVOP_apic_read
315#define PHYSDEVOP_APIC_WRITE PHYSDEVOP_apic_write
316#define PHYSDEVOP_ASSIGN_VECTOR PHYSDEVOP_alloc_irq_vector
317#define PHYSDEVOP_FREE_VECTOR PHYSDEVOP_free_irq_vector
318#define PHYSDEVOP_IRQ_NEEDS_UNMASK_NOTIFY XENIRQSTAT_needs_eoi
319#define PHYSDEVOP_IRQ_SHARED XENIRQSTAT_shared
320
321#endif /* __XEN_PUBLIC_PHYSDEV_H__ */