375 lines
12 KiB
C
375 lines
12 KiB
C
#ifndef QEMU_HW_XEN_COMMON_H
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#define QEMU_HW_XEN_COMMON_H 1
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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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#include <xenstore.h>
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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 4.2.0.
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*/
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/* Xen 4.2 through 4.6 */
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 471
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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 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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#define xengnttab_map_domain_grant_refs(h, c, d, r, p) \
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xc_gnttab_map_domain_grant_refs(h, c, d, r, p)
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#define xenforeignmemory_open(l, f) xen_xc
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static inline void *xenforeignmemory_map(xc_interface *h, uint32_t dom,
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int prot, size_t pages,
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const xen_pfn_t arr[/*pages*/],
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int err[/*pages*/])
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{
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if (err)
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return xc_map_foreign_bulk(h, dom, prot, arr, err, pages);
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else
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return xc_map_foreign_pages(h, dom, prot, arr, pages);
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}
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#define xenforeignmemory_unmap(h, p, s) munmap(p, s * XC_PAGE_SIZE)
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#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 471 */
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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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#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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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(xc_interface *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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}
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static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
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ioservid_t ioservid)
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{
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trace_xen_ioreq_server_destroy(ioservid);
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xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
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}
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static inline int xen_get_ioreq_server_info(xc_interface *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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return xc_hvm_get_ioreq_server_info(xc, dom, ioservid,
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ioreq_pfn, bufioreq_pfn,
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bufioreq_evtchn);
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}
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static inline int xen_set_ioreq_server_state(xc_interface *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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trace_xen_ioreq_server_state(ioservid, enable);
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return xc_hvm_set_ioreq_server_state(xc, dom, ioservid, enable);
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}
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#endif
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
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static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t domid,
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unsigned int space,
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unsigned long idx,
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xen_pfn_t gpfn)
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{
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return xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
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}
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#else
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static inline int xen_xc_domain_add_to_physmap(xc_interface *xch, uint32_t domid,
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unsigned int space,
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unsigned long idx,
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xen_pfn_t gpfn)
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{
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/* In Xen 4.6 rc is -1 and errno contains the error value. */
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int rc = xc_domain_add_to_physmap(xch, domid, space, idx, gpfn);
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if (rc == -1)
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return errno;
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return rc;
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}
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#endif
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#ifdef CONFIG_XEN_PV_DOMAIN_BUILD
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#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 470
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static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
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xen_domain_handle_t handle, uint32_t flags,
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uint32_t *pdomid)
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{
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return xc_domain_create(xc, ssidref, handle, flags, pdomid);
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}
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#else
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static inline int xen_domain_create(xc_interface *xc, uint32_t ssidref,
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xen_domain_handle_t handle, uint32_t flags,
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uint32_t *pdomid)
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{
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return xc_domain_create(xc, ssidref, handle, flags, pdomid, NULL);
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}
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#endif
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#endif
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#endif /* QEMU_HW_XEN_COMMON_H */
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