Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

3 files changed, 575 insertions, 0 deletions

diff --git a/qemu/include/hw/xen/xen.h b/qemu/include/hw/xen/xen.h
new file mode 100644
index 000000000..4356af456
--- /dev/null
+++ b/qemu/include/hw/xen/xen.h
@@ -0,0 +1,54 @@
+#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)
+{
+    return xen_allowed;
+}
+
+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);
+
+qemu_irq *xen_interrupt_controller_init(void);
+
+void xenstore_store_pv_console_info(int i, struct CharDriverState *chr);
+
+#if defined(NEED_CPU_H) && !defined(CONFIG_USER_ONLY)
+int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size,
+                 MemoryRegion **ram_memory);
+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
+
+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/qemu/include/hw/xen/xen_backend.h b/qemu/include/hw/xen/xen_backend.h
new file mode 100644
index 000000000..3b4125e39
--- /dev/null
+++ b/qemu/include/hw/xen/xen_backend.h
@@ -0,0 +1,111 @@
+#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);
+int xenstore_read_uint64(const char *base, const char *node, uint64_t *uval);
+int xenstore_read_fe_uint64(struct XenDevice *xendev, const char *node, uint64_t *uval);
+
+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/qemu/include/hw/xen/xen_common.h b/qemu/include/hw/xen/xen_common.h
new file mode 100644
index 000000000..ed5fd3e1a
--- /dev/null
+++ b/qemu/include/hw/xen/xen_common.h
@@ -0,0 +1,410 @@
+#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 "hw/pci/pci.h"
+#include "qemu/queue.h"
+#include "trace.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;
+}
+/* The followings are only to compile op_discard related code on older
+ * Xen releases. */
+#define BLKIF_OP_DISCARD 5
+struct blkif_request_discard {
+    uint64_t nr_sectors;
+    uint64_t sector_number;
+};
+#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);
+
+#ifdef HVM_PARAM_VMPORT_REGS_PFN
+static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
+                                          xen_pfn_t *vmport_regs_pfn)
+{
+    int rc;
+    uint64_t value;
+    rc = xc_hvm_param_get(xc, dom, HVM_PARAM_VMPORT_REGS_PFN, &value);
+    if (rc >= 0) {
+        *vmport_regs_pfn = (xen_pfn_t) value;
+    }
+    return rc;
+}
+#else
+static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
+                                          xen_pfn_t *vmport_regs_pfn)
+{
+    return -ENOSYS;
+}
+#endif
+
+/* Xen before 4.5 */
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 450
+
+#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
+#define HVM_PARAM_BUFIOREQ_EVTCHN 26
+#endif
+
+#define IOREQ_TYPE_PCI_CONFIG 2
+
+typedef uint16_t ioservid_t;
+
+static inline void xen_map_memory_section(XenXC xc, domid_t dom,
+                                          ioservid_t ioservid,
+                                          MemoryRegionSection *section)
+{
+}
+
+static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid,
+                                            MemoryRegionSection *section)
+{
+}
+
+static inline void xen_map_io_section(XenXC xc, domid_t dom,
+                                      ioservid_t ioservid,
+                                      MemoryRegionSection *section)
+{
+}
+
+static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
+                                        ioservid_t ioservid,
+                                        MemoryRegionSection *section)
+{
+}
+
+static inline void xen_map_pcidev(XenXC xc, domid_t dom,
+                                  ioservid_t ioservid,
+                                  PCIDevice *pci_dev)
+{
+}
+
+static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
+                                    ioservid_t ioservid,
+                                    PCIDevice *pci_dev)
+{
+}
+
+static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
+                                          ioservid_t *ioservid)
+{
+    return 0;
+}
+
+static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid)
+{
+}
+
+static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid,
+                                            xen_pfn_t *ioreq_pfn,
+                                            xen_pfn_t *bufioreq_pfn,
+                                            evtchn_port_t *bufioreq_evtchn)
+{
+    unsigned long param;
+    int rc;
+
+    rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
+    if (rc < 0) {
+        fprintf(stderr, "failed to get HVM_PARAM_IOREQ_PFN\n");
+        return -1;
+    }
+
+    *ioreq_pfn = param;
+
+    rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
+    if (rc < 0) {
+        fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_PFN\n");
+        return -1;
+    }
+
+    *bufioreq_pfn = param;
+
+    rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
+                          &param);
+    if (rc < 0) {
+        fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
+        return -1;
+    }
+
+    *bufioreq_evtchn = param;
+
+    return 0;
+}
+
+static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
+                                             ioservid_t ioservid,
+                                             bool enable)
+{
+    return 0;
+}
+
+/* Xen 4.5 */
+#else
+
+static inline void xen_map_memory_section(XenXC xc, domid_t dom,
+                                          ioservid_t ioservid,
+                                          MemoryRegionSection *section)
+{
+    hwaddr start_addr = section->offset_within_address_space;
+    ram_addr_t size = int128_get64(section->size);
+    hwaddr end_addr = start_addr + size - 1;
+
+    trace_xen_map_mmio_range(ioservid, start_addr, end_addr);
+    xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 1,
+                                        start_addr, end_addr);
+}
+
+static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid,
+                                            MemoryRegionSection *section)
+{
+    hwaddr start_addr = section->offset_within_address_space;
+    ram_addr_t size = int128_get64(section->size);
+    hwaddr end_addr = start_addr + size - 1;
+
+    trace_xen_unmap_mmio_range(ioservid, start_addr, end_addr);
+    xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 1,
+                                            start_addr, end_addr);
+}
+
+static inline void xen_map_io_section(XenXC xc, domid_t dom,
+                                      ioservid_t ioservid,
+                                      MemoryRegionSection *section)
+{
+    hwaddr start_addr = section->offset_within_address_space;
+    ram_addr_t size = int128_get64(section->size);
+    hwaddr end_addr = start_addr + size - 1;
+
+    trace_xen_map_portio_range(ioservid, start_addr, end_addr);
+    xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 0,
+                                        start_addr, end_addr);
+}
+
+static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
+                                        ioservid_t ioservid,
+                                        MemoryRegionSection *section)
+{
+    hwaddr start_addr = section->offset_within_address_space;
+    ram_addr_t size = int128_get64(section->size);
+    hwaddr end_addr = start_addr + size - 1;
+
+    trace_xen_unmap_portio_range(ioservid, start_addr, end_addr);
+    xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 0,
+                                            start_addr, end_addr);
+}
+
+static inline void xen_map_pcidev(XenXC xc, domid_t dom,
+                                  ioservid_t ioservid,
+                                  PCIDevice *pci_dev)
+{
+    trace_xen_map_pcidev(ioservid, pci_bus_num(pci_dev->bus),
+                         PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
+    xc_hvm_map_pcidev_to_ioreq_server(xc, dom, ioservid,
+                                      0, pci_bus_num(pci_dev->bus),
+                                      PCI_SLOT(pci_dev->devfn),
+                                      PCI_FUNC(pci_dev->devfn));
+}
+
+static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
+                                    ioservid_t ioservid,
+                                    PCIDevice *pci_dev)
+{
+    trace_xen_unmap_pcidev(ioservid, pci_bus_num(pci_dev->bus),
+                           PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
+    xc_hvm_unmap_pcidev_from_ioreq_server(xc, dom, ioservid,
+                                          0, pci_bus_num(pci_dev->bus),
+                                          PCI_SLOT(pci_dev->devfn),
+                                          PCI_FUNC(pci_dev->devfn));
+}
+
+static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
+                                          ioservid_t *ioservid)
+{
+    int rc = xc_hvm_create_ioreq_server(xc, dom, 1, ioservid);
+
+    if (rc == 0) {
+        trace_xen_ioreq_server_create(*ioservid);
+    }
+
+    return rc;
+}
+
+static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid)
+{
+    trace_xen_ioreq_server_destroy(ioservid);
+    xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
+}
+
+static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid,
+                                            xen_pfn_t *ioreq_pfn,
+                                            xen_pfn_t *bufioreq_pfn,
+                                            evtchn_port_t *bufioreq_evtchn)
+{
+    return xc_hvm_get_ioreq_server_info(xc, dom, ioservid,
+                                        ioreq_pfn, bufioreq_pfn,
+                                        bufioreq_evtchn);
+}
+
+static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
+                                             ioservid_t ioservid,
+                                             bool enable)
+{
+    trace_xen_ioreq_server_state(ioservid, enable);
+    return xc_hvm_set_ioreq_server_state(xc, dom, ioservid, enable);
+}
+
+#endif
+
+#endif /* QEMU_HW_XEN_COMMON_H */