| #ifndef QEMU_HW_XEN_BACKEND_H |
| #define QEMU_HW_XEN_BACKEND_H 1 |
| |
| #include "hw/xen_common.h" |
| #include "sysemu/sysemu.h" |
| #include "net/net.h" |
| |
| /* ------------------------------------------------------------- */ |
| |
| #define XEN_BUFSIZE 1024 |
| |
| struct XenDevice; |
| |
| /* driver uses grant tables -> open gntdev device (xendev->gnttabdev) */ |
| #define DEVOPS_FLAG_NEED_GNTDEV 1 |
| /* don't expect frontend doing correct state transitions (aka console quirk) */ |
| #define DEVOPS_FLAG_IGNORE_STATE 2 |
| |
| struct XenDevOps { |
| size_t size; |
| uint32_t flags; |
| void (*alloc)(struct XenDevice *xendev); |
| int (*init)(struct XenDevice *xendev); |
| int (*initialise)(struct XenDevice *xendev); |
| void (*connected)(struct XenDevice *xendev); |
| void (*event)(struct XenDevice *xendev); |
| void (*disconnect)(struct XenDevice *xendev); |
| int (*free)(struct XenDevice *xendev); |
| void (*backend_changed)(struct XenDevice *xendev, const char *node); |
| void (*frontend_changed)(struct XenDevice *xendev, const char *node); |
| }; |
| |
| struct XenDevice { |
| const char *type; |
| int dom; |
| int dev; |
| char name[64]; |
| int debug; |
| |
| enum xenbus_state be_state; |
| enum xenbus_state fe_state; |
| int online; |
| char be[XEN_BUFSIZE]; |
| char *fe; |
| char *protocol; |
| int remote_port; |
| int local_port; |
| |
| XenEvtchn evtchndev; |
| XenGnttab gnttabdev; |
| |
| struct XenDevOps *ops; |
| QTAILQ_ENTRY(XenDevice) next; |
| }; |
| |
| /* ------------------------------------------------------------- */ |
| |
| /* variables */ |
| extern XenXC xen_xc; |
| extern struct xs_handle *xenstore; |
| extern const char *xen_protocol; |
| |
| /* xenstore helper functions */ |
| int xenstore_write_str(const char *base, const char *node, const char *val); |
| int xenstore_write_int(const char *base, const char *node, int ival); |
| char *xenstore_read_str(const char *base, const char *node); |
| int xenstore_read_int(const char *base, const char *node, int *ival); |
| |
| int xenstore_write_be_str(struct XenDevice *xendev, const char *node, const char *val); |
| int xenstore_write_be_int(struct XenDevice *xendev, const char *node, int ival); |
| char *xenstore_read_be_str(struct XenDevice *xendev, const char *node); |
| int xenstore_read_be_int(struct XenDevice *xendev, const char *node, int *ival); |
| char *xenstore_read_fe_str(struct XenDevice *xendev, const char *node); |
| int xenstore_read_fe_int(struct XenDevice *xendev, const char *node, int *ival); |
| |
| const char *xenbus_strstate(enum xenbus_state state); |
| struct XenDevice *xen_be_find_xendev(const char *type, int dom, int dev); |
| void xen_be_check_state(struct XenDevice *xendev); |
| |
| /* xen backend driver bits */ |
| int xen_be_init(void); |
| int xen_be_register(const char *type, struct XenDevOps *ops); |
| int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state); |
| int xen_be_bind_evtchn(struct XenDevice *xendev); |
| void xen_be_unbind_evtchn(struct XenDevice *xendev); |
| int xen_be_send_notify(struct XenDevice *xendev); |
| void xen_be_printf(struct XenDevice *xendev, int msg_level, const char *fmt, ...) |
| GCC_FMT_ATTR(3, 4); |
| |
| /* actual backend drivers */ |
| extern struct XenDevOps xen_console_ops; /* xen_console.c */ |
| extern struct XenDevOps xen_kbdmouse_ops; /* xen_framebuffer.c */ |
| extern struct XenDevOps xen_framebuffer_ops; /* xen_framebuffer.c */ |
| extern struct XenDevOps xen_blkdev_ops; /* xen_disk.c */ |
| extern struct XenDevOps xen_netdev_ops; /* xen_nic.c */ |
| |
| void xen_init_display(int domid); |
| |
| /* configuration (aka xenbus setup) */ |
| void xen_config_cleanup(void); |
| int xen_config_dev_blk(DriveInfo *disk); |
| int xen_config_dev_nic(NICInfo *nic); |
| int xen_config_dev_vfb(int vdev, const char *type); |
| int xen_config_dev_vkbd(int vdev); |
| int xen_config_dev_console(int vdev); |
| |
| #endif /* QEMU_HW_XEN_BACKEND_H */ |