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1 #ifndef HW_XEN_HVM_COMMON_H
2 #define HW_XEN_HVM_COMMON_H
3
4 #include "qemu/queue.h"
5 #include "exec/hwaddr.h"
6 #include "hw/xen/xen_native.h"
7 #include "hw/xen/xen_backend_ops.h"
8 #include "system/runstate.h"
9 #include <xen/hvm/ioreq.h>
10
11 extern MemoryRegion xen_memory;
12 extern MemoryRegion xen_grants;
13 extern MemoryListener xen_io_listener;
14 extern DeviceListener xen_device_listener;
15
16 //#define DEBUG_XEN_HVM
17
18 #ifdef DEBUG_XEN_HVM
19 #define DPRINTF(fmt, ...) \
20 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
21 #else
22 #define DPRINTF(fmt, ...) \
23 do { } while (0)
24 #endif
25
26 #define XEN_GRANT_ADDR_OFF (1ULL << 63)
27
28 static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
29 {
30 return shared_page->vcpu_ioreq[i].vp_eport;
31 }
32 static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
33 {
34 return &shared_page->vcpu_ioreq[vcpu];
35 }
36
37 #define BUFFER_IO_MAX_DELAY 100
38
39 typedef struct XenPhysmap {
40 hwaddr start_addr;
41 ram_addr_t size;
42 const char *name;
43 hwaddr phys_offset;
44
45 QLIST_ENTRY(XenPhysmap) list;
46 } XenPhysmap;
47
48 typedef struct XenPciDevice {
49 PCIDevice *pci_dev;
50 uint32_t sbdf;
51 QLIST_ENTRY(XenPciDevice) entry;
52 } XenPciDevice;
53
54 typedef struct XenIOState {
55 ioservid_t ioservid;
56 shared_iopage_t *shared_page;
57 buffered_iopage_t *buffered_io_page;
58 xenforeignmemory_resource_handle *fres;
59 QEMUTimer *buffered_io_timer;
60 CPUState **cpu_by_vcpu_id;
61 /* the evtchn port for polling the notification, */
62 evtchn_port_t *ioreq_local_port;
63 /* evtchn remote and local ports for buffered io */
64 evtchn_port_t bufioreq_remote_port;
65 evtchn_port_t bufioreq_local_port;
66 /* the evtchn fd for polling */
67 xenevtchn_handle *xce_handle;
68 /* which vcpu we are serving */
69 int send_vcpu;
70
71 struct xs_handle *xenstore;
72 MemoryListener memory_listener;
73 MemoryListener io_listener;
74 QLIST_HEAD(, XenPciDevice) dev_list;
75 DeviceListener device_listener;
76
77 bool has_bufioreq;
78
79 Notifier exit;
80 } XenIOState;
81
82 void xen_exit_notifier(Notifier *n, void *data);
83
84 void xen_region_add(MemoryListener *listener, MemoryRegionSection *section);
85 void xen_region_del(MemoryListener *listener, MemoryRegionSection *section);
86 void xen_io_add(MemoryListener *listener, MemoryRegionSection *section);
87 void xen_io_del(MemoryListener *listener, MemoryRegionSection *section);
88 void xen_device_realize(DeviceListener *listener, DeviceState *dev);
89 void xen_device_unrealize(DeviceListener *listener, DeviceState *dev);
90
91 void xen_hvm_change_state_handler(void *opaque, bool running, RunState rstate);
92 void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
93 uint8_t handle_bufioreq,
94 const MemoryListener *xen_memory_listener,
95 bool mapcache);
96
97 void cpu_ioreq_pio(ioreq_t *req);
98 #endif /* HW_XEN_HVM_COMMON_H */