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TOMOYO Linux Cross Reference
Linux/include/xen/interface/physdev.h

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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
 36 struct 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
 57 struct 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
 67 struct 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
 87 struct 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
 97 struct 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
109 struct 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
123 struct 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
137 struct 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
161 struct 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
169 struct physdev_manage_pci {
170         /* IN */
171         uint8_t bus;
172         uint8_t devfn;
173 };
174 
175 #define PHYSDEVOP_restore_msi            19
176 struct physdev_restore_msi {
177         /* IN */
178         uint8_t bus;
179         uint8_t devfn;
180 };
181 
182 #define PHYSDEVOP_manage_pci_add_ext    20
183 struct 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  */
199 struct 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
211 struct 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
221 struct 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
229 struct 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
243 struct 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
252 struct 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
277 struct 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
291 struct 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__ */
322 

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