561 lines
17 KiB
C
561 lines
17 KiB
C
#ifndef QEMU_HW_XEN_COMMON_H
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#define QEMU_HW_XEN_COMMON_H 1
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#include "config-host.h"
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#include <stddef.h>
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#include <inttypes.h>
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/*
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* If we have new enough libxenctrl then we do not want/need these compat
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* interfaces, despite what the user supplied cflags might say. They
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* must be undefined before including xenctrl.h
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*/
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#undef XC_WANT_COMPAT_EVTCHN_API
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#undef XC_WANT_COMPAT_GNTTAB_API
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#undef XC_WANT_COMPAT_MAP_FOREIGN_API
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#include <xenctrl.h>
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
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# include <xs.h>
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#else
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# include <xenstore.h>
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#endif
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#include <xen/io/xenbus.h>
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#include "hw/hw.h"
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#include "hw/xen/xen.h"
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#include "hw/pci/pci.h"
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#include "qemu/queue.h"
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#include "trace.h"
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/*
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* We don't support Xen prior to 3.3.0.
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*/
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/* Xen before 4.0 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
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static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
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xen_pfn_t *arr, int *err,
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unsigned int num)
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{
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return xc_map_foreign_batch(xc_handle, dom, prot, arr, num);
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}
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#endif
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/* Xen before 4.1 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
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typedef int XenXC;
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typedef int xenevtchn_handle;
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typedef int xengnttab_handle;
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typedef int xenforeignmemory_handle;
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# define XC_INTERFACE_FMT "%i"
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# define XC_HANDLER_INITIAL_VALUE -1
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static inline xenevtchn_handle *xenevtchn_open(void *logger,
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unsigned int open_flags)
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{
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xenevtchn_handle *h = malloc(sizeof(*h));
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if (!h) {
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return NULL;
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}
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*h = xc_evtchn_open();
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if (*h == -1) {
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free(h);
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h = NULL;
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}
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return h;
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}
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static inline int xenevtchn_close(xenevtchn_handle *h)
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{
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int rc = xc_evtchn_close(*h);
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free(h);
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return rc;
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}
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#define xenevtchn_fd(h) xc_evtchn_fd(*h)
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#define xenevtchn_pending(h) xc_evtchn_pending(*h)
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#define xenevtchn_notify(h, p) xc_evtchn_notify(*h, p)
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#define xenevtchn_bind_interdomain(h, d, p) xc_evtchn_bind_interdomain(*h, d, p)
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#define xenevtchn_unmask(h, p) xc_evtchn_unmask(*h, p)
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#define xenevtchn_unbind(h, p) xc_evtchn_unmask(*h, p)
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static inline xengnttab_handle *xengnttab_open(void *logger,
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unsigned int open_flags)
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{
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xengnttab_handle *h = malloc(sizeof(*h));
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if (!h) {
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return NULL;
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}
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*h = xc_gnttab_open();
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if (*h == -1) {
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free(h);
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h = NULL;
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}
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return h;
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}
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static inline int xengnttab_close(xengnttab_handle *h)
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{
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int rc = xc_gnttab_close(*h);
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free(h);
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return rc;
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}
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#define xengnttab_set_max_grants(h, n) xc_gnttab_set_max_grants(*h, n)
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#define xengnttab_map_grant_ref(h, d, r, p) xc_gnttab_map_grant_ref(*h, d, r, p)
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#define xengnttab_map_grant_refs(h, c, d, r, p) \
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xc_gnttab_map_grant_refs(*h, c, d, r, p)
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#define xengnttab_unmap(h, a, n) xc_gnttab_munmap(*h, a, n)
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static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
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unsigned int open_flags)
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{
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return xc_interface_open();
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}
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/* See below for xenforeignmemory_* APIs */
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static inline int xc_fd(int xen_xc)
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{
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return xen_xc;
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}
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static inline int xc_domain_populate_physmap_exact
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(XenXC xc_handle, uint32_t domid, unsigned long nr_extents,
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unsigned int extent_order, unsigned int mem_flags, xen_pfn_t *extent_start)
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{
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return xc_domain_memory_populate_physmap
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(xc_handle, domid, nr_extents, extent_order, mem_flags, extent_start);
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}
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static inline int xc_domain_add_to_physmap(int xc_handle, uint32_t domid,
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unsigned int space, unsigned long idx,
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xen_pfn_t gpfn)
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{
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struct xen_add_to_physmap xatp = {
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.domid = domid,
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.space = space,
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.idx = idx,
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.gpfn = gpfn,
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};
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return xc_memory_op(xc_handle, XENMEM_add_to_physmap, &xatp);
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}
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static inline struct xs_handle *xs_open(unsigned long flags)
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{
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return xs_daemon_open();
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}
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static inline void xs_close(struct xs_handle *xsh)
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{
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if (xsh != NULL) {
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xs_daemon_close(xsh);
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}
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}
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/* Xen 4.1 thru 4.6 */
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#elif CONFIG_XEN_CTRL_INTERFACE_VERSION < 471
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typedef xc_interface *XenXC;
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typedef xc_interface *xenforeignmemory_handle;
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typedef xc_evtchn xenevtchn_handle;
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typedef xc_gnttab xengnttab_handle;
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# define XC_INTERFACE_FMT "%p"
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# define XC_HANDLER_INITIAL_VALUE NULL
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#define xenevtchn_open(l, f) xc_evtchn_open(l, f);
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#define xenevtchn_close(h) xc_evtchn_close(h)
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#define xenevtchn_fd(h) xc_evtchn_fd(h)
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#define xenevtchn_pending(h) xc_evtchn_pending(h)
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#define xenevtchn_notify(h, p) xc_evtchn_notify(h, p)
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#define xenevtchn_bind_interdomain(h, d, p) xc_evtchn_bind_interdomain(h, d, p)
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#define xenevtchn_unmask(h, p) xc_evtchn_unmask(h, p)
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#define xenevtchn_unbind(h, p) xc_evtchn_unbind(h, p)
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#define xengnttab_open(l, f) xc_gnttab_open(l, f)
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#define xengnttab_close(h) xc_gnttab_close(h)
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#define xengnttab_set_max_grants(h, n) xc_gnttab_set_max_grants(h, n)
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#define xengnttab_map_grant_ref(h, d, r, p) xc_gnttab_map_grant_ref(h, d, r, p)
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#define xengnttab_unmap(h, a, n) xc_gnttab_munmap(h, a, n)
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#define xengnttab_map_grant_refs(h, c, d, r, p) \
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xc_gnttab_map_grant_refs(h, c, d, r, p)
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static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
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unsigned int open_flags)
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{
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return xc_interface_open(logger, dombuild_logger, open_flags);
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}
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/* See below for xenforeignmemory_* APIs */
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/* FIXME There is no way to have the xen fd */
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static inline int xc_fd(xc_interface *xen_xc)
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{
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return -1;
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}
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#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 471 */
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typedef xc_interface *XenXC;
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# define XC_INTERFACE_FMT "%p"
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# define XC_HANDLER_INITIAL_VALUE NULL
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#include <xenevtchn.h>
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#include <xengnttab.h>
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#include <xenforeignmemory.h>
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static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
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unsigned int open_flags)
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{
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return xc_interface_open(logger, dombuild_logger, open_flags);
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}
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/* FIXME There is now way to have the xen fd */
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static inline int xc_fd(xc_interface *xen_xc)
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{
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return -1;
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}
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#endif
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/* Xen before 4.2 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
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static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
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uint64_t addr, uint32_t data)
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{
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return -ENOSYS;
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}
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/* The followings are only to compile op_discard related code on older
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* Xen releases. */
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#define BLKIF_OP_DISCARD 5
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struct blkif_request_discard {
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uint64_t nr_sectors;
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uint64_t sector_number;
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};
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#else
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static inline int xen_xc_hvm_inject_msi(XenXC xen_xc, domid_t dom,
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uint64_t addr, uint32_t data)
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{
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return xc_hvm_inject_msi(xen_xc, dom, addr, data);
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}
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#endif
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void destroy_hvm_domain(bool reboot);
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/* shutdown/destroy current domain because of an error */
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void xen_shutdown_fatal_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
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#ifdef HVM_PARAM_VMPORT_REGS_PFN
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static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
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xen_pfn_t *vmport_regs_pfn)
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{
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int rc;
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uint64_t value;
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rc = xc_hvm_param_get(xc, dom, HVM_PARAM_VMPORT_REGS_PFN, &value);
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if (rc >= 0) {
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*vmport_regs_pfn = (xen_pfn_t) value;
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}
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return rc;
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}
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#else
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static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
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xen_pfn_t *vmport_regs_pfn)
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{
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return -ENOSYS;
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}
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#endif
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/* Xen before 4.6 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
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#ifndef HVM_IOREQSRV_BUFIOREQ_ATOMIC
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#define HVM_IOREQSRV_BUFIOREQ_ATOMIC 2
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#endif
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#endif
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/* Xen before 4.5 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 450
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#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
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#define HVM_PARAM_BUFIOREQ_EVTCHN 26
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#endif
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#define IOREQ_TYPE_PCI_CONFIG 2
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typedef uint16_t ioservid_t;
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static inline void xen_map_memory_section(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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MemoryRegionSection *section)
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{
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}
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static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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MemoryRegionSection *section)
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{
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}
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static inline void xen_map_io_section(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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MemoryRegionSection *section)
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{
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}
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static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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MemoryRegionSection *section)
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{
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}
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static inline void xen_map_pcidev(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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PCIDevice *pci_dev)
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{
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}
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static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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PCIDevice *pci_dev)
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{
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}
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static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
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ioservid_t *ioservid)
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{
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return 0;
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}
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static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
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ioservid_t ioservid)
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{
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}
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static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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xen_pfn_t *ioreq_pfn,
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xen_pfn_t *bufioreq_pfn,
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evtchn_port_t *bufioreq_evtchn)
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{
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unsigned long param;
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int rc;
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rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, ¶m);
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if (rc < 0) {
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fprintf(stderr, "failed to get HVM_PARAM_IOREQ_PFN\n");
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return -1;
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}
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*ioreq_pfn = param;
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rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, ¶m);
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if (rc < 0) {
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fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_PFN\n");
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return -1;
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}
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*bufioreq_pfn = param;
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rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
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¶m);
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if (rc < 0) {
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fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
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return -1;
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}
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*bufioreq_evtchn = param;
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return 0;
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}
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static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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bool enable)
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{
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return 0;
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}
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/* Xen 4.5 */
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#else
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static inline void xen_map_memory_section(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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MemoryRegionSection *section)
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{
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hwaddr start_addr = section->offset_within_address_space;
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ram_addr_t size = int128_get64(section->size);
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hwaddr end_addr = start_addr + size - 1;
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trace_xen_map_mmio_range(ioservid, start_addr, end_addr);
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xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 1,
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start_addr, end_addr);
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}
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static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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MemoryRegionSection *section)
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{
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hwaddr start_addr = section->offset_within_address_space;
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ram_addr_t size = int128_get64(section->size);
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hwaddr end_addr = start_addr + size - 1;
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trace_xen_unmap_mmio_range(ioservid, start_addr, end_addr);
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xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 1,
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start_addr, end_addr);
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}
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static inline void xen_map_io_section(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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MemoryRegionSection *section)
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{
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hwaddr start_addr = section->offset_within_address_space;
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ram_addr_t size = int128_get64(section->size);
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hwaddr end_addr = start_addr + size - 1;
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trace_xen_map_portio_range(ioservid, start_addr, end_addr);
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xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 0,
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start_addr, end_addr);
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}
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static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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MemoryRegionSection *section)
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{
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hwaddr start_addr = section->offset_within_address_space;
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ram_addr_t size = int128_get64(section->size);
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hwaddr end_addr = start_addr + size - 1;
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trace_xen_unmap_portio_range(ioservid, start_addr, end_addr);
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xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 0,
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start_addr, end_addr);
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}
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static inline void xen_map_pcidev(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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PCIDevice *pci_dev)
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{
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trace_xen_map_pcidev(ioservid, pci_bus_num(pci_dev->bus),
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PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
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xc_hvm_map_pcidev_to_ioreq_server(xc, dom, ioservid,
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0, pci_bus_num(pci_dev->bus),
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PCI_SLOT(pci_dev->devfn),
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PCI_FUNC(pci_dev->devfn));
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}
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static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
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ioservid_t ioservid,
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PCIDevice *pci_dev)
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{
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trace_xen_unmap_pcidev(ioservid, pci_bus_num(pci_dev->bus),
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PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
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xc_hvm_unmap_pcidev_from_ioreq_server(xc, dom, ioservid,
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0, pci_bus_num(pci_dev->bus),
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PCI_SLOT(pci_dev->devfn),
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PCI_FUNC(pci_dev->devfn));
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}
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static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
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ioservid_t *ioservid)
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{
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int rc = xc_hvm_create_ioreq_server(xc, dom, HVM_IOREQSRV_BUFIOREQ_ATOMIC,
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ioservid);
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if (rc == 0) {
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trace_xen_ioreq_server_create(*ioservid);
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}
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return rc;
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}
|
|
|
|
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
|
|
|
|
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
|
|
static inline int xen_xc_domain_add_to_physmap(XenXC xch, uint32_t domid,
|
|
unsigned int space,
|
|
unsigned long idx,
|
|
xen_pfn_t gpfn)
|
|
{
|
|
return xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
|
|
}
|
|
#else
|
|
static inline int xen_xc_domain_add_to_physmap(XenXC xch, uint32_t domid,
|
|
unsigned int space,
|
|
unsigned long idx,
|
|
xen_pfn_t gpfn)
|
|
{
|
|
/* In Xen 4.6 rc is -1 and errno contains the error value. */
|
|
int rc = xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
|
|
if (rc == -1)
|
|
return errno;
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 470
|
|
static inline int xen_domain_create(XenXC xc, uint32_t ssidref,
|
|
xen_domain_handle_t handle, uint32_t flags,
|
|
uint32_t *pdomid)
|
|
{
|
|
return xc_domain_create(xc, ssidref, handle, flags, pdomid);
|
|
}
|
|
#else
|
|
static inline int xen_domain_create(XenXC xc, uint32_t ssidref,
|
|
xen_domain_handle_t handle, uint32_t flags,
|
|
uint32_t *pdomid)
|
|
{
|
|
return xc_domain_create(xc, ssidref, handle, flags, pdomid, NULL);
|
|
}
|
|
#endif
|
|
|
|
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 471
|
|
|
|
#define xenforeignmemory_open(l, f) &xen_xc
|
|
|
|
static inline void *xenforeignmemory_map(XenXC *h, uint32_t dom,
|
|
int prot, size_t pages,
|
|
const xen_pfn_t arr[/*pages*/],
|
|
int err[/*pages*/])
|
|
{
|
|
if (err)
|
|
return xc_map_foreign_bulk(*h, dom, prot, arr, err, pages);
|
|
else
|
|
return xc_map_foreign_pages(*h, dom, prot, arr, pages);
|
|
}
|
|
|
|
#define xenforeignmemory_unmap(h, p, s) munmap(p, s * XC_PAGE_SIZE)
|
|
|
|
#endif
|
|
|
|
#endif /* QEMU_HW_XEN_COMMON_H */
|