hw: move headers to include/

Many of these should be cleaned up with proper qdev-/QOM-ification.
Right now there are many catch-all headers in include/hw/ARCH depending
on cpu.h, and this makes it necessary to compile these files per-target.
However, fixing this does not belong in these patches.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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 */