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qemu-e2k/include/hw/xen/xen_common.h
Anthony PERARD a3434a2d56 xen: Import other xen/io/*.h 
A Xen public header have been imported into QEMU (by
f65eadb639 "xen: import ring.h from xen"), but there are other header
that depends on ring.h which come from the system when building QEMU.

This patch resolves the issue of having headers from the system
importing a different copie of ring.h.

This patch is prompt by the build issue described in the previous
patch: 'Revert xen/io/ring.h of "Clean up a few header guard symbols"'

ring.h and the new imported headers are moved to
"include/hw/xen/interface" as those describe interfaces with a guest.

The imported headers are cleaned up a bit while importing them: some
part of the file that QEMU doesn't use are removed (description
of how to make hypercall in grant_table.h have been removed).

Other cleanup:
- xen-mapcache.c and xen-legacy-backend.c don't need grant_table.h.
- xenfb.c doesn't need event_channel.h.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Message-Id: <20190621105441.3025-3-anthony.perard@citrix.com>
2019-06-24 10:42:30 +01:00

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#ifndef QEMU_HW_XEN_COMMON_H
#define QEMU_HW_XEN_COMMON_H
/*
* If we have new enough libxenctrl then we do not want/need these compat
* interfaces, despite what the user supplied cflags might say. They
* must be undefined before including xenctrl.h
*/
#undef XC_WANT_COMPAT_EVTCHN_API
#undef XC_WANT_COMPAT_GNTTAB_API
#undef XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenctrl.h>
#include <xenstore.h>
#include "hw/xen/interface/io/xenbus.h"
#include "hw/hw.h"
#include "hw/xen/xen.h"
#include "hw/pci/pci.h"
#include "qemu/queue.h"
#include "hw/xen/trace.h"
extern xc_interface *xen_xc;
/*
* We don't support Xen prior to 4.2.0.
*/
/* Xen 4.2 through 4.6 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40701
typedef xc_interface xenforeignmemory_handle;
typedef xc_evtchn xenevtchn_handle;
typedef xc_gnttab xengnttab_handle;
typedef evtchn_port_or_error_t xenevtchn_port_or_error_t;
#define xenevtchn_open(l, f) xc_evtchn_open(l, f);
#define xenevtchn_close(h) xc_evtchn_close(h)
#define xenevtchn_fd(h) xc_evtchn_fd(h)
#define xenevtchn_pending(h) xc_evtchn_pending(h)
#define xenevtchn_notify(h, p) xc_evtchn_notify(h, p)
#define xenevtchn_bind_interdomain(h, d, p) xc_evtchn_bind_interdomain(h, d, p)
#define xenevtchn_unmask(h, p) xc_evtchn_unmask(h, p)
#define xenevtchn_unbind(h, p) xc_evtchn_unbind(h, p)
#define xengnttab_open(l, f) xc_gnttab_open(l, f)
#define xengnttab_close(h) xc_gnttab_close(h)
#define xengnttab_set_max_grants(h, n) xc_gnttab_set_max_grants(h, n)
#define xengnttab_map_grant_ref(h, d, r, p) xc_gnttab_map_grant_ref(h, d, r, p)
#define xengnttab_unmap(h, a, n) xc_gnttab_munmap(h, a, n)
#define xengnttab_map_grant_refs(h, c, d, r, p) \
xc_gnttab_map_grant_refs(h, c, d, r, p)
#define xengnttab_map_domain_grant_refs(h, c, d, r, p) \
xc_gnttab_map_domain_grant_refs(h, c, d, r, p)
#define xenforeignmemory_open(l, f) xen_xc
#define xenforeignmemory_close(h)
static inline void *xenforeignmemory_map(xc_interface *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)
#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40701 */
#include <xenevtchn.h>
#include <xengnttab.h>
#include <xenforeignmemory.h>
#endif
extern xenforeignmemory_handle *xen_fmem;
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40900
typedef xc_interface xendevicemodel_handle;
#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40900 */
#undef XC_WANT_COMPAT_DEVICEMODEL_API
#include <xendevicemodel.h>
#endif
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 41100
static inline int xendevicemodel_relocate_memory(
xendevicemodel_handle *dmod, domid_t domid, uint32_t size, uint64_t src_gfn,
uint64_t dst_gfn)
{
uint32_t i;
int rc;
for (i = 0; i < size; i++) {
unsigned long idx = src_gfn + i;
xen_pfn_t gpfn = dst_gfn + i;
rc = xc_domain_add_to_physmap(xen_xc, domid, XENMAPSPACE_gmfn, idx,
gpfn);
if (rc) {
return rc;
}
}
return 0;
}
static inline int xendevicemodel_pin_memory_cacheattr(
xendevicemodel_handle *dmod, domid_t domid, uint64_t start, uint64_t end,
uint32_t type)
{
return xc_domain_pin_memory_cacheattr(xen_xc, domid, start, end, type);
}
typedef void xenforeignmemory_resource_handle;
#define XENMEM_resource_ioreq_server 0
#define XENMEM_resource_ioreq_server_frame_bufioreq 0
#define XENMEM_resource_ioreq_server_frame_ioreq(n) (1 + (n))
static inline xenforeignmemory_resource_handle *xenforeignmemory_map_resource(
xenforeignmemory_handle *fmem, domid_t domid, unsigned int type,
unsigned int id, unsigned long frame, unsigned long nr_frames,
void **paddr, int prot, int flags)
{
errno = EOPNOTSUPP;
return NULL;
}
#endif /* CONFIG_XEN_CTRL_INTERFACE_VERSION < 41100 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 41000
#define XEN_COMPAT_PHYSMAP
static inline void *xenforeignmemory_map2(xenforeignmemory_handle *h,
uint32_t dom, void *addr,
int prot, int flags, size_t pages,
const xen_pfn_t arr[/*pages*/],
int err[/*pages*/])
{
assert(addr == NULL && flags == 0);
return xenforeignmemory_map(h, dom, prot, pages, arr, err);
}
static inline int xentoolcore_restrict_all(domid_t domid)
{
errno = ENOTTY;
return -1;
}
static inline int xendevicemodel_shutdown(xendevicemodel_handle *dmod,
domid_t domid, unsigned int reason)
{
errno = ENOTTY;
return -1;
}
#else /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 41000 */
#include <xentoolcore.h>
#endif
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40900
static inline xendevicemodel_handle *xendevicemodel_open(
struct xentoollog_logger *logger, unsigned int open_flags)
{
return xen_xc;
}
#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40500
static inline int xendevicemodel_create_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, int handle_bufioreq,
ioservid_t *id)
{
return xc_hvm_create_ioreq_server(dmod, domid, handle_bufioreq,
id);
}
static inline int xendevicemodel_get_ioreq_server_info(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id,
xen_pfn_t *ioreq_pfn, xen_pfn_t *bufioreq_pfn,
evtchn_port_t *bufioreq_port)
{
return xc_hvm_get_ioreq_server_info(dmod, domid, id, ioreq_pfn,
bufioreq_pfn, bufioreq_port);
}
static inline int xendevicemodel_map_io_range_to_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id, int is_mmio,
uint64_t start, uint64_t end)
{
return xc_hvm_map_io_range_to_ioreq_server(dmod, domid, id, is_mmio,
start, end);
}
static inline int xendevicemodel_unmap_io_range_from_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id, int is_mmio,
uint64_t start, uint64_t end)
{
return xc_hvm_unmap_io_range_from_ioreq_server(dmod, domid, id, is_mmio,
start, end);
}
static inline int xendevicemodel_map_pcidev_to_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id,
uint16_t segment, uint8_t bus, uint8_t device, uint8_t function)
{
return xc_hvm_map_pcidev_to_ioreq_server(dmod, domid, id, segment,
bus, device, function);
}
static inline int xendevicemodel_unmap_pcidev_from_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id,
uint16_t segment, uint8_t bus, uint8_t device, uint8_t function)
{
return xc_hvm_unmap_pcidev_from_ioreq_server(dmod, domid, id, segment,
bus, device, function);
}
static inline int xendevicemodel_destroy_ioreq_server(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id)
{
return xc_hvm_destroy_ioreq_server(dmod, domid, id);
}
static inline int xendevicemodel_set_ioreq_server_state(
xendevicemodel_handle *dmod, domid_t domid, ioservid_t id, int enabled)
{
return xc_hvm_set_ioreq_server_state(dmod, domid, id, enabled);
}
#endif /* CONFIG_XEN_CTRL_INTERFACE_VERSION >= 40500 */
static inline int xendevicemodel_set_pci_intx_level(
xendevicemodel_handle *dmod, domid_t domid, uint16_t segment,
uint8_t bus, uint8_t device, uint8_t intx, unsigned int level)
{
return xc_hvm_set_pci_intx_level(dmod, domid, segment, bus, device,
intx, level);
}
static inline int xendevicemodel_set_isa_irq_level(
xendevicemodel_handle *dmod, domid_t domid, uint8_t irq,
unsigned int level)
{
return xc_hvm_set_isa_irq_level(dmod, domid, irq, level);
}
static inline int xendevicemodel_set_pci_link_route(
xendevicemodel_handle *dmod, domid_t domid, uint8_t link, uint8_t irq)
{
return xc_hvm_set_pci_link_route(dmod, domid, link, irq);
}
static inline int xendevicemodel_inject_msi(
xendevicemodel_handle *dmod, domid_t domid, uint64_t msi_addr,
uint32_t msi_data)
{
return xc_hvm_inject_msi(dmod, domid, msi_addr, msi_data);
}
static inline int xendevicemodel_track_dirty_vram(
xendevicemodel_handle *dmod, domid_t domid, uint64_t first_pfn,
uint32_t nr, unsigned long *dirty_bitmap)
{
return xc_hvm_track_dirty_vram(dmod, domid, first_pfn, nr,
dirty_bitmap);
}
static inline int xendevicemodel_modified_memory(
xendevicemodel_handle *dmod, domid_t domid, uint64_t first_pfn,
uint32_t nr)
{
return xc_hvm_modified_memory(dmod, domid, first_pfn, nr);
}
static inline int xendevicemodel_set_mem_type(
xendevicemodel_handle *dmod, domid_t domid, hvmmem_type_t mem_type,
uint64_t first_pfn, uint32_t nr)
{
return xc_hvm_set_mem_type(dmod, domid, mem_type, first_pfn, nr);
}
#endif
extern xendevicemodel_handle *xen_dmod;
static inline int xen_set_mem_type(domid_t domid, hvmmem_type_t type,
uint64_t first_pfn, uint32_t nr)
{
return xendevicemodel_set_mem_type(xen_dmod, domid, type, first_pfn,
nr);
}
static inline int xen_set_pci_intx_level(domid_t domid, uint16_t segment,
uint8_t bus, uint8_t device,
uint8_t intx, unsigned int level)
{
return xendevicemodel_set_pci_intx_level(xen_dmod, domid, segment, bus,
device, intx, level);
}
static inline int xen_set_pci_link_route(domid_t domid, uint8_t link,
uint8_t irq)
{
return xendevicemodel_set_pci_link_route(xen_dmod, domid, link, irq);
}
static inline int xen_inject_msi(domid_t domid, uint64_t msi_addr,
uint32_t msi_data)
{
return xendevicemodel_inject_msi(xen_dmod, domid, msi_addr, msi_data);
}
static inline int xen_set_isa_irq_level(domid_t domid, uint8_t irq,
unsigned int level)
{
return xendevicemodel_set_isa_irq_level(xen_dmod, domid, irq, level);
}
static inline int xen_track_dirty_vram(domid_t domid, uint64_t first_pfn,
uint32_t nr, unsigned long *bitmap)
{
return xendevicemodel_track_dirty_vram(xen_dmod, domid, first_pfn, nr,
bitmap);
}
static inline int xen_modified_memory(domid_t domid, uint64_t first_pfn,
uint32_t nr)
{
return xendevicemodel_modified_memory(xen_dmod, domid, first_pfn, nr);
}
static inline int xen_restrict(domid_t domid)
{
int rc;
rc = xentoolcore_restrict_all(domid);
trace_xen_domid_restrict(rc ? errno : 0);
return rc;
}
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(xc_interface *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(xc_interface *xc, domid_t dom,
xen_pfn_t *vmport_regs_pfn)
{
return -ENOSYS;
}
#endif
/* Xen before 4.6 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40600
#ifndef HVM_IOREQSRV_BUFIOREQ_ATOMIC
#define HVM_IOREQSRV_BUFIOREQ_ATOMIC 2
#endif
#endif
static inline int xen_get_default_ioreq_server_info(domid_t dom,
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(xen_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(xen_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(xen_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;
}
/* Xen before 4.5 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40500
#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(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
}
static inline void xen_unmap_memory_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
}
static inline void xen_map_io_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
}
static inline void xen_unmap_io_section(domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
{
}
static inline void xen_map_pcidev(domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
}
static inline void xen_unmap_pcidev(domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
}
static inline void xen_create_ioreq_server(domid_t dom,
ioservid_t *ioservid)
{
}
static inline void xen_destroy_ioreq_server(domid_t dom,
ioservid_t ioservid)
{
}
static inline int xen_get_ioreq_server_info(domid_t dom,
ioservid_t ioservid,
xen_pfn_t *ioreq_pfn,
xen_pfn_t *bufioreq_pfn,
evtchn_port_t *bufioreq_evtchn)
{
return xen_get_default_ioreq_server_info(dom, ioreq_pfn,
bufioreq_pfn,
bufioreq_evtchn);
}
static inline int xen_set_ioreq_server_state(domid_t dom,
ioservid_t ioservid,
bool enable)
{
return 0;
}
/* Xen 4.5 */
#else
static bool use_default_ioreq_server;
static inline void xen_map_memory_section(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;
if (use_default_ioreq_server) {
return;
}
trace_xen_map_mmio_range(ioservid, start_addr, end_addr);
xendevicemodel_map_io_range_to_ioreq_server(xen_dmod, dom, ioservid, 1,
start_addr, end_addr);
}
static inline void xen_unmap_memory_section(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;
if (use_default_ioreq_server) {
return;
}
trace_xen_unmap_mmio_range(ioservid, start_addr, end_addr);
xendevicemodel_unmap_io_range_from_ioreq_server(xen_dmod, dom, ioservid,
1, start_addr, end_addr);
}
static inline void xen_map_io_section(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;
if (use_default_ioreq_server) {
return;
}
trace_xen_map_portio_range(ioservid, start_addr, end_addr);
xendevicemodel_map_io_range_to_ioreq_server(xen_dmod, dom, ioservid, 0,
start_addr, end_addr);
}
static inline void xen_unmap_io_section(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;
if (use_default_ioreq_server) {
return;
}
trace_xen_unmap_portio_range(ioservid, start_addr, end_addr);
xendevicemodel_unmap_io_range_from_ioreq_server(xen_dmod, dom, ioservid,
0, start_addr, end_addr);
}
static inline void xen_map_pcidev(domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
if (use_default_ioreq_server) {
return;
}
trace_xen_map_pcidev(ioservid, pci_dev_bus_num(pci_dev),
PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
xendevicemodel_map_pcidev_to_ioreq_server(xen_dmod, dom, ioservid, 0,
pci_dev_bus_num(pci_dev),
PCI_SLOT(pci_dev->devfn),
PCI_FUNC(pci_dev->devfn));
}
static inline void xen_unmap_pcidev(domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
if (use_default_ioreq_server) {
return;
}
trace_xen_unmap_pcidev(ioservid, pci_dev_bus_num(pci_dev),
PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
xendevicemodel_unmap_pcidev_from_ioreq_server(xen_dmod, dom, ioservid, 0,
pci_dev_bus_num(pci_dev),
PCI_SLOT(pci_dev->devfn),
PCI_FUNC(pci_dev->devfn));
}
static inline void xen_create_ioreq_server(domid_t dom,
ioservid_t *ioservid)
{
int rc = xendevicemodel_create_ioreq_server(xen_dmod, dom,
HVM_IOREQSRV_BUFIOREQ_ATOMIC,
ioservid);
if (rc == 0) {
trace_xen_ioreq_server_create(*ioservid);
return;
}
*ioservid = 0;
use_default_ioreq_server = true;
trace_xen_default_ioreq_server();
}
static inline void xen_destroy_ioreq_server(domid_t dom,
ioservid_t ioservid)
{
if (use_default_ioreq_server) {
return;
}
trace_xen_ioreq_server_destroy(ioservid);
xendevicemodel_destroy_ioreq_server(xen_dmod, dom, ioservid);
}
static inline int xen_get_ioreq_server_info(domid_t dom,
ioservid_t ioservid,
xen_pfn_t *ioreq_pfn,
xen_pfn_t *bufioreq_pfn,
evtchn_port_t *bufioreq_evtchn)
{
if (use_default_ioreq_server) {
return xen_get_default_ioreq_server_info(dom, ioreq_pfn,
bufioreq_pfn,
bufioreq_evtchn);
}
return xendevicemodel_get_ioreq_server_info(xen_dmod, dom, ioservid,
ioreq_pfn, bufioreq_pfn,
bufioreq_evtchn);
}
static inline int xen_set_ioreq_server_state(domid_t dom,
ioservid_t ioservid,
bool enable)
{
if (use_default_ioreq_server) {
return 0;
}
trace_xen_ioreq_server_state(ioservid, enable);
return xendevicemodel_set_ioreq_server_state(xen_dmod, dom, ioservid,
enable);
}
#endif
/* Xen before 4.8 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40800
struct xengnttab_grant_copy_segment {
union xengnttab_copy_ptr {
void *virt;
struct {
uint32_t ref;
uint16_t offset;
uint16_t domid;
} foreign;
} source, dest;
uint16_t len;
uint16_t flags;
int16_t status;
};
typedef struct xengnttab_grant_copy_segment xengnttab_grant_copy_segment_t;
static inline int xengnttab_grant_copy(xengnttab_handle *xgt, uint32_t count,
xengnttab_grant_copy_segment_t *segs)
{
return -ENOSYS;
}
#endif
#endif /* QEMU_HW_XEN_COMMON_H */
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