The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/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  * Copyright (c) 2006, Keir Fraser
   21  */
   22 
   23 #ifndef __XEN_PUBLIC_PHYSDEV_H__
   24 #define __XEN_PUBLIC_PHYSDEV_H__
   25 
   26 #include "xen.h"
   27 
   28 /*
   29  * Prototype for this hypercall is:
   30  *  int physdev_op(int cmd, void *args)
   31  * @cmd  == PHYSDEVOP_??? (physdev operation).
   32  * @args == Operation-specific extra arguments (NULL if none).
   33  */
   34 
   35 /*
   36  * Notify end-of-interrupt (EOI) for the specified IRQ.
   37  * @arg == pointer to physdev_eoi structure.
   38  */
   39 #define PHYSDEVOP_eoi                   12
   40 struct physdev_eoi {
   41     /* IN */
   42     uint32_t irq;
   43 };
   44 typedef struct physdev_eoi physdev_eoi_t;
   45 DEFINE_XEN_GUEST_HANDLE(physdev_eoi_t);
   46 
   47 /*
   48  * Register a shared page for the hypervisor to indicate whether the guest
   49  * must issue PHYSDEVOP_eoi. The semantics of PHYSDEVOP_eoi change slightly
   50  * once the guest used this function in that the associated event channel
   51  * will automatically get unmasked. The page registered is used as a bit
   52  * array indexed by Xen's PIRQ value.
   53  */
   54 #define PHYSDEVOP_pirq_eoi_gmfn_v1       17
   55 /*
   56  * Register a shared page for the hypervisor to indicate whether the
   57  * guest must issue PHYSDEVOP_eoi. This hypercall is very similar to
   58  * PHYSDEVOP_pirq_eoi_gmfn_v1 but it doesn't change the semantics of
   59  * PHYSDEVOP_eoi. The page registered is used as a bit array indexed by
   60  * Xen's PIRQ value.
   61  */
   62 #define PHYSDEVOP_pirq_eoi_gmfn_v2       28
   63 struct physdev_pirq_eoi_gmfn {
   64     /* IN */
   65     xen_pfn_t gmfn;
   66 };
   67 typedef struct physdev_pirq_eoi_gmfn physdev_pirq_eoi_gmfn_t;
   68 DEFINE_XEN_GUEST_HANDLE(physdev_pirq_eoi_gmfn_t);
   69 
   70 /*
   71  * Query the status of an IRQ line.
   72  * @arg == pointer to physdev_irq_status_query structure.
   73  */
   74 #define PHYSDEVOP_irq_status_query       5
   75 struct physdev_irq_status_query {
   76     /* IN */
   77     uint32_t irq;
   78     /* OUT */
   79     uint32_t flags; /* XENIRQSTAT_* */
   80 };
   81 typedef struct physdev_irq_status_query physdev_irq_status_query_t;
   82 DEFINE_XEN_GUEST_HANDLE(physdev_irq_status_query_t);
   83 
   84 /* Need to call PHYSDEVOP_eoi when the IRQ has been serviced? */
   85 #define _XENIRQSTAT_needs_eoi   (0)
   86 #define  XENIRQSTAT_needs_eoi   (1U<<_XENIRQSTAT_needs_eoi)
   87 
   88 /* IRQ shared by multiple guests? */
   89 #define _XENIRQSTAT_shared      (1)
   90 #define  XENIRQSTAT_shared      (1U<<_XENIRQSTAT_shared)
   91 
   92 /*
   93  * Set the current VCPU's I/O privilege level.
   94  * @arg == pointer to physdev_set_iopl structure.
   95  */
   96 #define PHYSDEVOP_set_iopl               6
   97 struct physdev_set_iopl {
   98     /* IN */
   99     uint32_t iopl;
  100 };
  101 typedef struct physdev_set_iopl physdev_set_iopl_t;
  102 DEFINE_XEN_GUEST_HANDLE(physdev_set_iopl_t);
  103 
  104 /*
  105  * Set the current VCPU's I/O-port permissions bitmap.
  106  * @arg == pointer to physdev_set_iobitmap structure.
  107  */
  108 #define PHYSDEVOP_set_iobitmap           7
  109 struct physdev_set_iobitmap {
  110     /* IN */
  111 #if __XEN_INTERFACE_VERSION__ >= 0x00030205
  112     XEN_GUEST_HANDLE(uint8) bitmap;
  113 #else
  114     uint8_t *bitmap;
  115 #endif
  116     uint32_t nr_ports;
  117 };
  118 typedef struct physdev_set_iobitmap physdev_set_iobitmap_t;
  119 DEFINE_XEN_GUEST_HANDLE(physdev_set_iobitmap_t);
  120 
  121 /*
  122  * Read or write an IO-APIC register.
  123  * @arg == pointer to physdev_apic structure.
  124  */
  125 #define PHYSDEVOP_apic_read              8
  126 #define PHYSDEVOP_apic_write             9
  127 struct physdev_apic {
  128     /* IN */
  129     unsigned long apic_physbase;
  130     uint32_t reg;
  131     /* IN or OUT */
  132     uint32_t value;
  133 };
  134 typedef struct physdev_apic physdev_apic_t;
  135 DEFINE_XEN_GUEST_HANDLE(physdev_apic_t);
  136 
  137 /*
  138  * Allocate or free a physical upcall vector for the specified IRQ line.
  139  * @arg == pointer to physdev_irq structure.
  140  */
  141 #define PHYSDEVOP_alloc_irq_vector      10
  142 #define PHYSDEVOP_free_irq_vector       11
  143 struct physdev_irq {
  144     /* IN */
  145     uint32_t irq;
  146     /* IN or OUT */
  147     uint32_t vector;
  148 };
  149 typedef struct physdev_irq physdev_irq_t;
  150 DEFINE_XEN_GUEST_HANDLE(physdev_irq_t);
  151  
  152 #define MAP_PIRQ_TYPE_MSI               0x0
  153 #define MAP_PIRQ_TYPE_GSI               0x1
  154 #define MAP_PIRQ_TYPE_UNKNOWN           0x2
  155 #define MAP_PIRQ_TYPE_MSI_SEG           0x3
  156 #define MAP_PIRQ_TYPE_MULTI_MSI         0x4
  157 
  158 #define PHYSDEVOP_map_pirq               13
  159 struct physdev_map_pirq {
  160     domid_t domid;
  161     /* IN */
  162     int type;
  163     /* IN (ignored for ..._MULTI_MSI) */
  164     int index;
  165     /* IN or OUT */
  166     int pirq;
  167     /* IN - high 16 bits hold segment for ..._MSI_SEG and ..._MULTI_MSI */
  168     int bus;
  169     /* IN */
  170     int devfn;
  171     /* IN (also OUT for ..._MULTI_MSI) */
  172     int entry_nr;
  173     /* IN */
  174     uint64_t table_base;
  175 };
  176 typedef struct physdev_map_pirq physdev_map_pirq_t;
  177 DEFINE_XEN_GUEST_HANDLE(physdev_map_pirq_t);
  178 
  179 #define PHYSDEVOP_unmap_pirq             14
  180 struct physdev_unmap_pirq {
  181     domid_t domid;
  182     /* IN */
  183     int pirq;
  184 };
  185 
  186 typedef struct physdev_unmap_pirq physdev_unmap_pirq_t;
  187 DEFINE_XEN_GUEST_HANDLE(physdev_unmap_pirq_t);
  188 
  189 #define PHYSDEVOP_manage_pci_add         15
  190 #define PHYSDEVOP_manage_pci_remove      16
  191 struct physdev_manage_pci {
  192     /* IN */
  193     uint8_t bus;
  194     uint8_t devfn;
  195 }; 
  196 
  197 typedef struct physdev_manage_pci physdev_manage_pci_t;
  198 DEFINE_XEN_GUEST_HANDLE(physdev_manage_pci_t);
  199 
  200 #define PHYSDEVOP_restore_msi            19
  201 struct physdev_restore_msi {
  202     /* IN */
  203     uint8_t bus;
  204     uint8_t devfn;
  205 };
  206 typedef struct physdev_restore_msi physdev_restore_msi_t;
  207 DEFINE_XEN_GUEST_HANDLE(physdev_restore_msi_t);
  208 
  209 #define PHYSDEVOP_manage_pci_add_ext     20
  210 struct physdev_manage_pci_ext {
  211     /* IN */
  212     uint8_t bus;
  213     uint8_t devfn;
  214     unsigned is_extfn;
  215     unsigned is_virtfn;
  216     struct {
  217         uint8_t bus;
  218         uint8_t devfn;
  219     } physfn;
  220 };
  221 
  222 typedef struct physdev_manage_pci_ext physdev_manage_pci_ext_t;
  223 DEFINE_XEN_GUEST_HANDLE(physdev_manage_pci_ext_t);
  224 
  225 /*
  226  * Argument to physdev_op_compat() hypercall. Superceded by new physdev_op()
  227  * hypercall since 0x00030202.
  228  */
  229 struct physdev_op {
  230     uint32_t cmd;
  231     union {
  232         struct physdev_irq_status_query      irq_status_query;
  233         struct physdev_set_iopl              set_iopl;
  234         struct physdev_set_iobitmap          set_iobitmap;
  235         struct physdev_apic                  apic_op;
  236         struct physdev_irq                   irq_op;
  237     } u;
  238 };
  239 typedef struct physdev_op physdev_op_t;
  240 DEFINE_XEN_GUEST_HANDLE(physdev_op_t);
  241 
  242 #define PHYSDEVOP_setup_gsi    21
  243 struct physdev_setup_gsi {
  244     int gsi;
  245     /* IN */
  246     uint8_t triggering;
  247     /* IN */
  248     uint8_t polarity;
  249     /* IN */
  250 };
  251 
  252 typedef struct physdev_setup_gsi physdev_setup_gsi_t;
  253 DEFINE_XEN_GUEST_HANDLE(physdev_setup_gsi_t);
  254 
  255 /* leave PHYSDEVOP 22 free */
  256 
  257 /* type is MAP_PIRQ_TYPE_GSI or MAP_PIRQ_TYPE_MSI
  258  * the hypercall returns a free pirq */
  259 #define PHYSDEVOP_get_free_pirq    23
  260 struct physdev_get_free_pirq {
  261     /* IN */ 
  262     int type;
  263     /* OUT */
  264     uint32_t pirq;
  265 };
  266 
  267 typedef struct physdev_get_free_pirq physdev_get_free_pirq_t;
  268 DEFINE_XEN_GUEST_HANDLE(physdev_get_free_pirq_t);
  269 
  270 #define XEN_PCI_MMCFG_RESERVED         0x1
  271 
  272 #define PHYSDEVOP_pci_mmcfg_reserved    24
  273 struct physdev_pci_mmcfg_reserved {
  274     uint64_t address;
  275     uint16_t segment;
  276     uint8_t start_bus;
  277     uint8_t end_bus;
  278     uint32_t flags;
  279 };
  280 typedef struct physdev_pci_mmcfg_reserved physdev_pci_mmcfg_reserved_t;
  281 DEFINE_XEN_GUEST_HANDLE(physdev_pci_mmcfg_reserved_t);
  282 
  283 #define XEN_PCI_DEV_EXTFN              0x1
  284 #define XEN_PCI_DEV_VIRTFN             0x2
  285 #define XEN_PCI_DEV_PXM                0x4
  286 
  287 #define PHYSDEVOP_pci_device_add        25
  288 struct physdev_pci_device_add {
  289     /* IN */
  290     uint16_t seg;
  291     uint8_t bus;
  292     uint8_t devfn;
  293     uint32_t flags;
  294     struct {
  295         uint8_t bus;
  296         uint8_t devfn;
  297     } physfn;
  298     /*
  299      * Optional parameters array.
  300      * First element ([0]) is PXM domain associated with the device (if
  301      * XEN_PCI_DEV_PXM is set)
  302      */
  303 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
  304     uint32_t optarr[];
  305 #elif defined(__GNUC__)
  306     uint32_t optarr[0];
  307 #endif
  308 };
  309 typedef struct physdev_pci_device_add physdev_pci_device_add_t;
  310 DEFINE_XEN_GUEST_HANDLE(physdev_pci_device_add_t);
  311 
  312 #define PHYSDEVOP_pci_device_remove     26
  313 #define PHYSDEVOP_restore_msi_ext       27
  314 /*
  315  * Dom0 should use these two to announce MMIO resources assigned to
  316  * MSI-X capable devices won't (prepare) or may (release) change.
  317  */
  318 #define PHYSDEVOP_prepare_msix          30
  319 #define PHYSDEVOP_release_msix          31
  320 struct physdev_pci_device {
  321     /* IN */
  322     uint16_t seg;
  323     uint8_t bus;
  324     uint8_t devfn;
  325 };
  326 typedef struct physdev_pci_device physdev_pci_device_t;
  327 DEFINE_XEN_GUEST_HANDLE(physdev_pci_device_t);
  328 
  329 #define PHYSDEVOP_DBGP_RESET_PREPARE    1
  330 #define PHYSDEVOP_DBGP_RESET_DONE       2
  331 
  332 #define PHYSDEVOP_DBGP_BUS_UNKNOWN      0
  333 #define PHYSDEVOP_DBGP_BUS_PCI          1
  334 
  335 #define PHYSDEVOP_dbgp_op               29
  336 struct physdev_dbgp_op {
  337     /* IN */
  338     uint8_t op;
  339     uint8_t bus;
  340     union {
  341         struct physdev_pci_device pci;
  342     } u;
  343 };
  344 typedef struct physdev_dbgp_op physdev_dbgp_op_t;
  345 DEFINE_XEN_GUEST_HANDLE(physdev_dbgp_op_t);
  346 
  347 /*
  348  * Notify that some PIRQ-bound event channels have been unmasked.
  349  * ** This command is obsolete since interface version 0x00030202 and is **
  350  * ** unsupported by newer versions of Xen.                              **
  351  */
  352 #define PHYSDEVOP_IRQ_UNMASK_NOTIFY      4
  353 
  354 #if __XEN_INTERFACE_VERSION__ < 0x00040600
  355 /*
  356  * These all-capitals physdev operation names are superceded by the new names
  357  * (defined above) since interface version 0x00030202. The guard above was
  358  * added post-4.5 only though and hence shouldn't check for 0x00030202.
  359  */
  360 #define PHYSDEVOP_IRQ_STATUS_QUERY       PHYSDEVOP_irq_status_query
  361 #define PHYSDEVOP_SET_IOPL               PHYSDEVOP_set_iopl
  362 #define PHYSDEVOP_SET_IOBITMAP           PHYSDEVOP_set_iobitmap
  363 #define PHYSDEVOP_APIC_READ              PHYSDEVOP_apic_read
  364 #define PHYSDEVOP_APIC_WRITE             PHYSDEVOP_apic_write
  365 #define PHYSDEVOP_ASSIGN_VECTOR          PHYSDEVOP_alloc_irq_vector
  366 #define PHYSDEVOP_FREE_VECTOR            PHYSDEVOP_free_irq_vector
  367 #define PHYSDEVOP_IRQ_NEEDS_UNMASK_NOTIFY XENIRQSTAT_needs_eoi
  368 #define PHYSDEVOP_IRQ_SHARED             XENIRQSTAT_shared
  369 #endif
  370 
  371 #if __XEN_INTERFACE_VERSION__ < 0x00040200
  372 #define PHYSDEVOP_pirq_eoi_gmfn PHYSDEVOP_pirq_eoi_gmfn_v1
  373 #else
  374 #define PHYSDEVOP_pirq_eoi_gmfn PHYSDEVOP_pirq_eoi_gmfn_v2
  375 #endif
  376 
  377 #endif /* __XEN_PUBLIC_PHYSDEV_H__ */
  378 
  379 /*
  380  * Local variables:
  381  * mode: C
  382  * c-file-style: "BSD"
  383  * c-basic-offset: 4
  384  * tab-width: 4
  385  * indent-tabs-mode: nil
  386  * End:
  387  */

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