diff options
Diffstat (limited to 'include/hw/xen')
| -rw-r--r-- | include/hw/xen/xen.h | 62 | ||||
| -rw-r--r-- | include/hw/xen/xen_backend.h | 109 | ||||
| -rw-r--r-- | include/hw/xen/xen_common.h | 160 |
3 files changed, 331 insertions, 0 deletions
diff --git a/include/hw/xen/xen.h b/include/hw/xen/xen.h new file mode 100644 index 0000000000..6235f91fe0 --- /dev/null +++ b/include/hw/xen/xen.h @@ -0,0 +1,62 @@ +#ifndef QEMU_HW_XEN_H +#define QEMU_HW_XEN_H 1 +/* + * public xen header + * stuff needed outside xen-*.c, i.e. interfaces to qemu. + * must not depend on any xen headers being present in + * /usr/include/xen, so it can be included unconditionally. + */ +#include <inttypes.h> + +#include "hw/irq.h" +#include "qemu-common.h" + +/* xen-machine.c */ +enum xen_mode { + XEN_EMULATE = 0, // xen emulation, using xenner (default) + XEN_CREATE, // create xen domain + XEN_ATTACH // attach to xen domain created by xend +}; + +extern uint32_t xen_domid; +extern enum xen_mode xen_mode; + +extern bool xen_allowed; + +static inline bool xen_enabled(void) +{ +#if defined(CONFIG_XEN_BACKEND) && !defined(CONFIG_NO_XEN) + return xen_allowed; +#else + return 0; +#endif +} + +int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num); +void xen_piix3_set_irq(void *opaque, int irq_num, int level); +void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len); +void xen_hvm_inject_msi(uint64_t addr, uint32_t data); +void xen_cmos_set_s3_resume(void *opaque, int irq, int level); + +qemu_irq *xen_interrupt_controller_init(void); + +int xen_init(void); +int xen_hvm_init(void); +void xen_vcpu_init(void); +void xenstore_store_pv_console_info(int i, struct CharDriverState *chr); + +#if defined(NEED_CPU_H) && !defined(CONFIG_USER_ONLY) +struct MemoryRegion; +void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, + struct MemoryRegion *mr); +void xen_modified_memory(ram_addr_t start, ram_addr_t length); +#endif + +struct MemoryRegion; +void xen_register_framebuffer(struct MemoryRegion *mr); + +#if defined(CONFIG_XEN) && CONFIG_XEN_CTRL_INTERFACE_VERSION < 400 +# define HVM_MAX_VCPUS 32 +#endif + +#endif /* QEMU_HW_XEN_H */ diff --git a/include/hw/xen/xen_backend.h b/include/hw/xen/xen_backend.h new file mode 100644 index 0000000000..3b7d96d7a5 --- /dev/null +++ b/include/hw/xen/xen_backend.h @@ -0,0 +1,109 @@ +#ifndef QEMU_HW_XEN_BACKEND_H +#define QEMU_HW_XEN_BACKEND_H 1 + +#include "hw/xen/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); +int xenstore_write_int64(const char *base, const char *node, int64_t 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); +int xenstore_write_be_int64(struct XenDevice *xendev, const char *node, int64_t 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 */ diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h new file mode 100644 index 0000000000..2d5a25bf40 --- /dev/null +++ b/include/hw/xen/xen_common.h @@ -0,0 +1,160 @@ +#ifndef QEMU_HW_XEN_COMMON_H +#define QEMU_HW_XEN_COMMON_H 1 + +#include "config-host.h" + +#include <stddef.h> +#include <inttypes.h> + +#include <xenctrl.h> +#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420 +# include <xs.h> +#else +# include <xenstore.h> +#endif +#include <xen/io/xenbus.h> + +#include "hw/hw.h" +#include "hw/xen/xen.h" +#include "qemu/queue.h" + +/* + * We don't support Xen prior to 3.3.0. + */ + +/* Xen before 4.0 */ +#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400 +static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot, + xen_pfn_t *arr, int *err, + unsigned int num) +{ + return xc_map_foreign_batch(xc_handle, dom, prot, arr, num); +} +#endif + + +/* Xen before 4.1 */ +#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410 + +typedef int XenXC; +typedef int XenEvtchn; +typedef int XenGnttab; + +# define XC_INTERFACE_FMT "%i" +# define XC_HANDLER_INITIAL_VALUE -1 + +static inline XenEvtchn xen_xc_evtchn_open(void *logger, + unsigned int open_flags) +{ + return xc_evtchn_open(); +} + +static inline XenGnttab xen_xc_gnttab_open(void *logger, + unsigned int open_flags) +{ + return xc_gnttab_open(); +} + +static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger, + unsigned int open_flags) +{ + return xc_interface_open(); +} + +static inline int xc_fd(int xen_xc) +{ + return xen_xc; +} + + +static inline int xc_domain_populate_physmap_exact + (XenXC xc_handle, uint32_t domid, unsigned long nr_extents, + unsigned int extent_order, unsigned int mem_flags, xen_pfn_t *extent_start) +{ + return xc_domain_memory_populate_physmap + (xc_handle, domid, nr_extents, extent_order, mem_flags, extent_start); +} + +static inline int xc_domain_add_to_physmap(int xc_handle, uint32_t domid, + unsigned int space, unsigned long idx, + xen_pfn_t gpfn) +{ + struct xen_add_to_physmap xatp = { + .domid = domid, + .space = space, + .idx = idx, + .gpfn = gpfn, + }; + + return xc_memory_op(xc_handle, XENMEM_add_to_physmap, &xatp); +} + +static inline struct xs_handle *xs_open(unsigned long flags) +{ + return xs_daemon_open(); +} + +static inline void xs_close(struct xs_handle *xsh) +{ + if (xsh != NULL) { + xs_daemon_close(xsh); + } +} + + +/* Xen 4.1 */ +#else + +typedef xc_interface *XenXC; +typedef xc_evtchn *XenEvtchn; +typedef xc_gnttab *XenGnttab; + +# define XC_INTERFACE_FMT "%p" +# define XC_HANDLER_INITIAL_VALUE NULL + +static inline XenEvtchn xen_xc_evtchn_open(void *logger, + unsigned int open_flags) +{ + return xc_evtchn_open(logger, open_flags); +} + +static inline XenGnttab xen_xc_gnttab_open(void *logger, + unsigned int open_flags) +{ + return xc_gnttab_open(logger, open_flags); +} + +static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger, + unsigned int open_flags) +{ + return xc_interface_open(logger, dombuild_logger, open_flags); +} + +/* FIXME There is now way to have the xen fd */ +static inline int xc_fd(xc_interface *xen_xc) +{ + return -1; +} +#endif + +/* Xen before 4.2 */ +#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420 +static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom, + uint64_t addr, uint32_t data) +{ + return -ENOSYS; +} +#else +static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom, + uint64_t addr, uint32_t data) +{ + return xc_hvm_inject_msi(xen_xc, dom, addr, data); +} +#endif + +void destroy_hvm_domain(bool reboot); + +/* shutdown/destroy current domain because of an error */ +void xen_shutdown_fatal_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2); + +#endif /* QEMU_HW_XEN_COMMON_H */ |