include/hw/xen/xen_common.h

   1 #ifndef QEMU_HW_XEN_COMMON_H
   2 #define QEMU_HW_XEN_COMMON_H 1
   3
   4 #include "config-host.h"
   5
   6 #include <stddef.h>
   7 #include <inttypes.h>
   8
   9 #include <xenctrl.h>
  10 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
  11 #  include <xs.h>
  12 #else
  13 #  include <xenstore.h>
  14 #endif
  15 #include <xen/io/xenbus.h>
  16
  17 #include "hw/hw.h"
  18 #include "hw/xen/xen.h"
  19 #include "hw/pci/pci.h"
  20 #include "qemu/queue.h"
  21 #include "trace.h"
  22
  23 /*
  24  * We don't support Xen prior to 3.3.0.
  25  */
  26
  27 /* Xen before 4.0 */
  28 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
  29 static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
  30                                         xen_pfn_t *arr, int *err,
  31                                         unsigned int num)
  32 {
  33     return xc_map_foreign_batch(xc_handle, dom, prot, arr, num);
  34 }
  35 #endif
  36
  37
  38 /* Xen before 4.1 */
  39 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
  40
  41 typedef int XenXC;
  42 typedef int XenEvtchn;
  43 typedef int XenGnttab;
  44
  45 #  define XC_INTERFACE_FMT "%i"
  46 #  define XC_HANDLER_INITIAL_VALUE    -1
  47
  48 static inline XenEvtchn xen_xc_evtchn_open(void *logger,
  49                                            unsigned int open_flags)
  50 {
  51     return xc_evtchn_open();
  52 }
  53
  54 static inline XenGnttab xen_xc_gnttab_open(void *logger,
  55                                            unsigned int open_flags)
  56 {
  57     return xc_gnttab_open();
  58 }
  59
  60 static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
  61                                           unsigned int open_flags)
  62 {
  63     return xc_interface_open();
  64 }
  65
  66 static inline int xc_fd(int xen_xc)
  67 {
  68     return xen_xc;
  69 }
  70
  71
  72 static inline int xc_domain_populate_physmap_exact
  73     (XenXC xc_handle, uint32_t domid, unsigned long nr_extents,
  74      unsigned int extent_order, unsigned int mem_flags, xen_pfn_t *extent_start)
  75 {
  76     return xc_domain_memory_populate_physmap
  77         (xc_handle, domid, nr_extents, extent_order, mem_flags, extent_start);
  78 }
  79
  80 static inline int xc_domain_add_to_physmap(int xc_handle, uint32_t domid,
  81                                            unsigned int space, unsigned long idx,
  82                                            xen_pfn_t gpfn)
  83 {
  84     struct xen_add_to_physmap xatp = {
  85         .domid = domid,
  86         .space = space,
  87         .idx = idx,
  88         .gpfn = gpfn,
  89     };
  90
  91     return xc_memory_op(xc_handle, XENMEM_add_to_physmap, &xatp);
  92 }
  93
  94 static inline struct xs_handle *xs_open(unsigned long flags)
  95 {
  96     return xs_daemon_open();
  97 }
  98
  99 static inline void xs_close(struct xs_handle *xsh)
 100 {
 101     if (xsh != NULL) {
 102         xs_daemon_close(xsh);
 103     }
 104 }
 105
 106
 107 /* Xen 4.1 */
 108 #else
 109
 110 typedef xc_interface *XenXC;
 111 typedef xc_evtchn *XenEvtchn;
 112 typedef xc_gnttab *XenGnttab;
 113
 114 #  define XC_INTERFACE_FMT "%p"
 115 #  define XC_HANDLER_INITIAL_VALUE    NULL
 116
 117 static inline XenEvtchn xen_xc_evtchn_open(void *logger,
 118                                            unsigned int open_flags)
 119 {
 120     return xc_evtchn_open(logger, open_flags);
 121 }
 122
 123 static inline XenGnttab xen_xc_gnttab_open(void *logger,
 124                                            unsigned int open_flags)
 125 {
 126     return xc_gnttab_open(logger, open_flags);
 127 }
 128
 129 static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
 130                                           unsigned int open_flags)
 131 {
 132     return xc_interface_open(logger, dombuild_logger, open_flags);
 133 }
 134
 135 /* FIXME There is now way to have the xen fd */
 136 static inline int xc_fd(xc_interface *xen_xc)
 137 {
 138     return -1;
 139 }
 140 #endif
 141
 142 /* Xen before 4.2 */
 143 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
 144 static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
 145         uint64_t addr, uint32_t data)
 146 {
 147     return -ENOSYS;
 148 }
 149 /* The followings are only to compile op_discard related code on older
 150  * Xen releases. */
 151 #define BLKIF_OP_DISCARD 5
 152 struct blkif_request_discard {
 153     uint64_t nr_sectors;
 154     uint64_t sector_number;
 155 };
 156 #else
 157 static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
 158         uint64_t addr, uint32_t data)
 159 {
 160     return xc_hvm_inject_msi(xen_xc, dom, addr, data);
 161 }
 162 #endif
 163
 164 void destroy_hvm_domain(bool reboot);
 165
 166 /* shutdown/destroy current domain because of an error */
 167 void xen_shutdown_fatal_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
 168
 169 #ifdef HVM_PARAM_VMPORT_REGS_PFN
 170 static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
 171                                           unsigned long *vmport_regs_pfn)
 172 {
 173     return xc_get_hvm_param(xc, dom, HVM_PARAM_VMPORT_REGS_PFN,
 174                             vmport_regs_pfn);
 175 }
 176 #else
 177 static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
 178                                           unsigned long *vmport_regs_pfn)
 179 {
 180     return -ENOSYS;
 181 }
 182 #endif
 183
 184 /* Xen before 4.5 */
 185 #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 450
 186
 187 #ifndef HVM_PARAM_BUFIOREQ_EVTCHN
 188 #define HVM_PARAM_BUFIOREQ_EVTCHN 26
 189 #endif
 190
 191 #define IOREQ_TYPE_PCI_CONFIG 2
 192
 193 typedef uint32_t ioservid_t;
 194
 195 static inline void xen_map_memory_section(XenXC xc, domid_t dom,
 196                                           ioservid_t ioservid,
 197                                           MemoryRegionSection *section)
 198 {
 199 }
 200
 201 static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
 202                                             ioservid_t ioservid,
 203                                             MemoryRegionSection *section)
 204 {
 205 }
 206
 207 static inline void xen_map_io_section(XenXC xc, domid_t dom,
 208                                       ioservid_t ioservid,
 209                                       MemoryRegionSection *section)
 210 {
 211 }
 212
 213 static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
 214                                         ioservid_t ioservid,
 215                                         MemoryRegionSection *section)
 216 {
 217 }
 218
 219 static inline void xen_map_pcidev(XenXC xc, domid_t dom,
 220                                   ioservid_t ioservid,
 221                                   PCIDevice *pci_dev)
 222 {
 223 }
 224
 225 static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
 226                                     ioservid_t ioservid,
 227                                     PCIDevice *pci_dev)
 228 {
 229 }
 230
 231 static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
 232                                           ioservid_t *ioservid)
 233 {
 234     return 0;
 235 }
 236
 237 static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
 238                                             ioservid_t ioservid)
 239 {
 240 }
 241
 242 static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
 243                                             ioservid_t ioservid,
 244                                             xen_pfn_t *ioreq_pfn,
 245                                             xen_pfn_t *bufioreq_pfn,
 246                                             evtchn_port_t *bufioreq_evtchn)
 247 {
 248     unsigned long param;
 249     int rc;
 250
 251     rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
 252     if (rc < 0) {
 253         fprintf(stderr, "failed to get HVM_PARAM_IOREQ_PFN\n");
 254         return -1;
 255     }
 256
 257     *ioreq_pfn = param;
 258
 259     rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
 260     if (rc < 0) {
 261         fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_PFN\n");
 262         return -1;
 263     }
 264
 265     *bufioreq_pfn = param;
 266
 267     rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
 268                           &param);
 269     if (rc < 0) {
 270         fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
 271         return -1;
 272     }
 273
 274     *bufioreq_evtchn = param;
 275
 276     return 0;
 277 }
 278
 279 static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
 280                                              ioservid_t ioservid,
 281                                              bool enable)
 282 {
 283     return 0;
 284 }
 285
 286 /* Xen 4.5 */
 287 #else
 288
 289 static inline void xen_map_memory_section(XenXC xc, domid_t dom,
 290                                           ioservid_t ioservid,
 291                                           MemoryRegionSection *section)
 292 {
 293     hwaddr start_addr = section->offset_within_address_space;
 294     ram_addr_t size = int128_get64(section->size);
 295     hwaddr end_addr = start_addr + size - 1;
 296
 297     trace_xen_map_mmio_range(ioservid, start_addr, end_addr);
 298     xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 1,
 299                                         start_addr, end_addr);
 300 }
 301
 302 static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
 303                                             ioservid_t ioservid,
 304                                             MemoryRegionSection *section)
 305 {
 306     hwaddr start_addr = section->offset_within_address_space;
 307     ram_addr_t size = int128_get64(section->size);
 308     hwaddr end_addr = start_addr + size - 1;
 309
 310     trace_xen_unmap_mmio_range(ioservid, start_addr, end_addr);
 311     xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 1,
 312                                             start_addr, end_addr);
 313 }
 314
 315 static inline void xen_map_io_section(XenXC xc, domid_t dom,
 316                                       ioservid_t ioservid,
 317                                       MemoryRegionSection *section)
 318 {
 319     hwaddr start_addr = section->offset_within_address_space;
 320     ram_addr_t size = int128_get64(section->size);
 321     hwaddr end_addr = start_addr + size - 1;
 322
 323     trace_xen_map_portio_range(ioservid, start_addr, end_addr);
 324     xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 0,
 325                                         start_addr, end_addr);
 326 }
 327
 328 static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
 329                                         ioservid_t ioservid,
 330                                         MemoryRegionSection *section)
 331 {
 332     hwaddr start_addr = section->offset_within_address_space;
 333     ram_addr_t size = int128_get64(section->size);
 334     hwaddr end_addr = start_addr + size - 1;
 335
 336     trace_xen_unmap_portio_range(ioservid, start_addr, end_addr);
 337     xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 0,
 338                                             start_addr, end_addr);
 339 }
 340
 341 static inline void xen_map_pcidev(XenXC xc, domid_t dom,
 342                                   ioservid_t ioservid,
 343                                   PCIDevice *pci_dev)
 344 {
 345     trace_xen_map_pcidev(ioservid, pci_bus_num(pci_dev->bus),
 346                          PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
 347     xc_hvm_map_pcidev_to_ioreq_server(xc, dom, ioservid,
 348                                       0, pci_bus_num(pci_dev->bus),
 349                                       PCI_SLOT(pci_dev->devfn),
 350                                       PCI_FUNC(pci_dev->devfn));
 351 }
 352
 353 static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
 354                                     ioservid_t ioservid,
 355                                     PCIDevice *pci_dev)
 356 {
 357     trace_xen_unmap_pcidev(ioservid, pci_bus_num(pci_dev->bus),
 358                            PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
 359     xc_hvm_unmap_pcidev_from_ioreq_server(xc, dom, ioservid,
 360                                           0, pci_bus_num(pci_dev->bus),
 361                                           PCI_SLOT(pci_dev->devfn),
 362                                           PCI_FUNC(pci_dev->devfn));
 363 }
 364
 365 static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
 366                                           ioservid_t *ioservid)
 367 {
 368     int rc = xc_hvm_create_ioreq_server(xc, dom, 1, ioservid);
 369
 370     if (rc == 0) {
 371         trace_xen_ioreq_server_create(*ioservid);
 372     }
 373
 374     return rc;
 375 }
 376
 377 static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
 378                                             ioservid_t ioservid)
 379 {
 380     trace_xen_ioreq_server_destroy(ioservid);
 381     xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
 382 }
 383
 384 static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
 385                                             ioservid_t ioservid,
 386                                             xen_pfn_t *ioreq_pfn,
 387                                             xen_pfn_t *bufioreq_pfn,
 388                                             evtchn_port_t *bufioreq_evtchn)
 389 {
 390     return xc_hvm_get_ioreq_server_info(xc, dom, ioservid,
 391                                         ioreq_pfn, bufioreq_pfn,
 392                                         bufioreq_evtchn);
 393 }
 394
 395 static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
 396                                              ioservid_t ioservid,
 397                                              bool enable)
 398 {
 399     trace_xen_ioreq_server_state(ioservid, enable);
 400     return xc_hvm_set_ioreq_server_state(xc, dom, ioservid, enable);
 401 }
 402
 403 #endif
 404
 405 #endif /* QEMU_HW_XEN_COMMON_H */