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      1 #ifndef QEMU_HW_XEN_H
      2 #define QEMU_HW_XEN_H 1
      3 /*
      4  * public xen header
      5  *   stuff needed outside xen-*.c, i.e. interfaces to qemu.
      6  *   must not depend on any xen headers being present in
      7  *   /usr/include/xen, so it can be included unconditionally.
      8  */
      9 #include <inttypes.h>
     10 
     11 #include "hw/irq.h"
     12 #include "qemu-common.h"
     13 
     14 /* xen-machine.c */
     15 enum xen_mode {
     16     XEN_EMULATE = 0,  // xen emulation, using xenner (default)
     17     XEN_CREATE,       // create xen domain
     18     XEN_ATTACH        // attach to xen domain created by xend
     19 };
     20 
     21 extern uint32_t xen_domid;
     22 extern enum xen_mode xen_mode;
     23 
     24 extern bool xen_allowed;
     25 
     26 static inline bool xen_enabled(void)
     27 {
     28     return xen_allowed;
     29 }
     30 
     31 int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num);
     32 void xen_piix3_set_irq(void *opaque, int irq_num, int level);
     33 void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len);
     34 void xen_hvm_inject_msi(uint64_t addr, uint32_t data);
     35 void xen_cmos_set_s3_resume(void *opaque, int irq, int level);
     36 
     37 qemu_irq *xen_interrupt_controller_init(void);
     38 
     39 int xen_init(void);
     40 int xen_hvm_init(MemoryRegion **ram_memory);
     41 void xenstore_store_pv_console_info(int i, struct CharDriverState *chr);
     42 
     43 #if defined(NEED_CPU_H) && !defined(CONFIG_USER_ONLY)
     44 void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
     45                    struct MemoryRegion *mr);
     46 void xen_modified_memory(ram_addr_t start, ram_addr_t length);
     47 #endif
     48 
     49 void xen_register_framebuffer(struct MemoryRegion *mr);
     50 
     51 #if defined(CONFIG_XEN) && CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
     52 #  define HVM_MAX_VCPUS 32
     53 #endif
     54 
     55 #endif /* QEMU_HW_XEN_H */
     56