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qemu-e2k/include/hw/xen/xen_common.h

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#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 4.6 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 460
#ifndef HVM_IOREQSRV_BUFIOREQ_ATOMIC
#define HVM_IOREQSRV_BUFIOREQ_ATOMIC 2
#endif
#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, HVM_IOREQSRV_BUFIOREQ_ATOMIC,
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
#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
#endif /* QEMU_HW_XEN_COMMON_H */
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