9ecdd4bf08
Add a second mapcache for grant mappings. The mapcache for grants needs to work with XC_PAGE_SIZE granularity since we can't map larger ranges than what has been granted to us. Like with foreign mappings (xen_memory), machines using grants are expected to initialize the xen_grants MR and map it into their address-map accordingly. CC: Manos Pitsidianakis <manos.pitsidianakis@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
#ifndef HW_XEN_HVM_COMMON_H
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#define HW_XEN_HVM_COMMON_H
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#include "qemu/units.h"
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#include "cpu.h"
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#include "hw/pci/pci.h"
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#include "hw/hw.h"
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#include "hw/xen/xen_native.h"
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#include "hw/xen/xen-legacy-backend.h"
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#include "sysemu/runstate.h"
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#include "sysemu/sysemu.h"
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#include "sysemu/xen.h"
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#include "sysemu/xen-mapcache.h"
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#include "qemu/error-report.h"
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#include <xen/hvm/ioreq.h>
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extern MemoryRegion xen_memory;
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extern MemoryRegion xen_grants;
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extern MemoryListener xen_io_listener;
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extern DeviceListener xen_device_listener;
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//#define DEBUG_XEN_HVM
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#ifdef DEBUG_XEN_HVM
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#define DPRINTF(fmt, ...) \
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do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
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#else
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#define DPRINTF(fmt, ...) \
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do { } while (0)
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#endif
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#define XEN_GRANT_ADDR_OFF (1ULL << 63)
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static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
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{
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return shared_page->vcpu_ioreq[i].vp_eport;
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}
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static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
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{
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return &shared_page->vcpu_ioreq[vcpu];
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}
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#define BUFFER_IO_MAX_DELAY 100
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typedef struct XenPhysmap {
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hwaddr start_addr;
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ram_addr_t size;
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const char *name;
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hwaddr phys_offset;
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QLIST_ENTRY(XenPhysmap) list;
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} XenPhysmap;
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typedef struct XenPciDevice {
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PCIDevice *pci_dev;
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uint32_t sbdf;
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QLIST_ENTRY(XenPciDevice) entry;
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} XenPciDevice;
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typedef struct XenIOState {
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ioservid_t ioservid;
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shared_iopage_t *shared_page;
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buffered_iopage_t *buffered_io_page;
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xenforeignmemory_resource_handle *fres;
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QEMUTimer *buffered_io_timer;
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CPUState **cpu_by_vcpu_id;
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/* the evtchn port for polling the notification, */
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evtchn_port_t *ioreq_local_port;
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/* evtchn remote and local ports for buffered io */
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evtchn_port_t bufioreq_remote_port;
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evtchn_port_t bufioreq_local_port;
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/* the evtchn fd for polling */
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xenevtchn_handle *xce_handle;
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/* which vcpu we are serving */
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int send_vcpu;
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struct xs_handle *xenstore;
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MemoryListener memory_listener;
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MemoryListener io_listener;
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QLIST_HEAD(, XenPciDevice) dev_list;
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DeviceListener device_listener;
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Notifier exit;
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} XenIOState;
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void xen_exit_notifier(Notifier *n, void *data);
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void xen_region_add(MemoryListener *listener, MemoryRegionSection *section);
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void xen_region_del(MemoryListener *listener, MemoryRegionSection *section);
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void xen_io_add(MemoryListener *listener, MemoryRegionSection *section);
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void xen_io_del(MemoryListener *listener, MemoryRegionSection *section);
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void xen_device_realize(DeviceListener *listener, DeviceState *dev);
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void xen_device_unrealize(DeviceListener *listener, DeviceState *dev);
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void xen_hvm_change_state_handler(void *opaque, bool running, RunState rstate);
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void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
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const MemoryListener *xen_memory_listener);
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void cpu_ioreq_pio(ioreq_t *req);
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#endif /* HW_XEN_HVM_COMMON_H */
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