/******************************************************************************
* xen.h
- *
- * Guest OS interface to Xen.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
*
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
+ * Guest OS interface to Xen.
*
* Copyright (c) 2004, K A Fraser
*/
#ifndef __XEN_PUBLIC_XEN_H__
#define __XEN_PUBLIC_XEN_H__
-#include "xen-compat.h"
-
-#if defined(CONFIG_PARAVIRT_XEN) && !defined(HAVE_XEN_PLATFORM_COMPAT_H)
#include <asm/xen/interface.h>
-#elif defined(__i386__) || defined(__x86_64__)
-#include "arch-x86/xen.h"
-#elif defined(__ia64__)
-#include "arch-ia64.h"
-#elif defined(__powerpc__)
-#include "arch-powerpc.h"
-#else
-#error "Unsupported architecture"
-#endif
-
-#ifndef __ASSEMBLY__
-/* Guest handles for primitive C types. */
-DEFINE_XEN_GUEST_HANDLE(char);
-__DEFINE_XEN_GUEST_HANDLE(uchar, unsigned char);
-DEFINE_XEN_GUEST_HANDLE(int);
-__DEFINE_XEN_GUEST_HANDLE(uint, unsigned int);
-DEFINE_XEN_GUEST_HANDLE(long);
-__DEFINE_XEN_GUEST_HANDLE(ulong, unsigned long);
-DEFINE_XEN_GUEST_HANDLE(void);
-
-DEFINE_XEN_GUEST_HANDLE(xen_pfn_t);
-#endif
/*
- * HYPERCALLS
+ * XEN "SYSTEM CALLS" (a.k.a. HYPERCALLS).
*/
+/*
+ * x86_32: EAX = vector; EBX, ECX, EDX, ESI, EDI = args 1, 2, 3, 4, 5.
+ * EAX = return value
+ * (argument registers may be clobbered on return)
+ * x86_64: RAX = vector; RDI, RSI, RDX, R10, R8, R9 = args 1, 2, 3, 4, 5, 6.
+ * RAX = return value
+ * (argument registers not clobbered on return; RCX, R11 are)
+ */
#define __HYPERVISOR_set_trap_table 0
#define __HYPERVISOR_mmu_update 1
#define __HYPERVISOR_set_gdt 2
#define __HYPERVISOR_stack_switch 3
#define __HYPERVISOR_set_callbacks 4
#define __HYPERVISOR_fpu_taskswitch 5
-#define __HYPERVISOR_sched_op_compat 6 /* compat since 0x00030101 */
-#define __HYPERVISOR_platform_op 7
+#define __HYPERVISOR_sched_op 6
+#define __HYPERVISOR_dom0_op 7
#define __HYPERVISOR_set_debugreg 8
#define __HYPERVISOR_get_debugreg 9
#define __HYPERVISOR_update_descriptor 10
#define __HYPERVISOR_multicall 13
#define __HYPERVISOR_update_va_mapping 14
#define __HYPERVISOR_set_timer_op 15
-#define __HYPERVISOR_event_channel_op_compat 16 /* compat since 0x00030202 */
+#define __HYPERVISOR_event_channel_op_compat 16
#define __HYPERVISOR_xen_version 17
#define __HYPERVISOR_console_io 18
-#define __HYPERVISOR_physdev_op_compat 19 /* compat since 0x00030202 */
+#define __HYPERVISOR_physdev_op_compat 19
#define __HYPERVISOR_grant_table_op 20
#define __HYPERVISOR_vm_assist 21
#define __HYPERVISOR_update_va_mapping_otherdomain 22
#define __HYPERVISOR_vcpu_op 24
#define __HYPERVISOR_set_segment_base 25 /* x86/64 only */
#define __HYPERVISOR_mmuext_op 26
-#define __HYPERVISOR_xsm_op 27
+#define __HYPERVISOR_acm_op 27
#define __HYPERVISOR_nmi_op 28
-#define __HYPERVISOR_sched_op 29
+#define __HYPERVISOR_sched_op_new 29
#define __HYPERVISOR_callback_op 30
#define __HYPERVISOR_xenoprof_op 31
#define __HYPERVISOR_event_channel_op 32
#define __HYPERVISOR_physdev_op 33
#define __HYPERVISOR_hvm_op 34
-#define __HYPERVISOR_sysctl 35
-#define __HYPERVISOR_domctl 36
-#define __HYPERVISOR_kexec_op 37
-
-/* Architecture-specific hypercall definitions. */
-#define __HYPERVISOR_arch_0 48
-#define __HYPERVISOR_arch_1 49
-#define __HYPERVISOR_arch_2 50
-#define __HYPERVISOR_arch_3 51
-#define __HYPERVISOR_arch_4 52
-#define __HYPERVISOR_arch_5 53
-#define __HYPERVISOR_arch_6 54
-#define __HYPERVISOR_arch_7 55
/*
- * HYPERCALL COMPATIBILITY.
- */
-
-/* New sched_op hypercall introduced in 0x00030101. */
-#if __XEN_INTERFACE_VERSION__ < 0x00030101 || (defined(CONFIG_PARAVIRT_XEN) && !defined(HAVE_XEN_PLATFORM_COMPAT_H))
-#undef __HYPERVISOR_sched_op
-#define __HYPERVISOR_sched_op __HYPERVISOR_sched_op_compat
-#endif
-
-/* New event-channel and physdev hypercalls introduced in 0x00030202. */
-#if __XEN_INTERFACE_VERSION__ < 0x00030202
-#undef __HYPERVISOR_event_channel_op
-#define __HYPERVISOR_event_channel_op __HYPERVISOR_event_channel_op_compat
-#undef __HYPERVISOR_physdev_op
-#define __HYPERVISOR_physdev_op __HYPERVISOR_physdev_op_compat
-#endif
-
-/* New platform_op hypercall introduced in 0x00030204. */
-#if __XEN_INTERFACE_VERSION__ < 0x00030204 || (defined(CONFIG_PARAVIRT_XEN) && !defined(HAVE_XEN_PLATFORM_COMPAT_H))
-#define __HYPERVISOR_dom0_op __HYPERVISOR_platform_op
-#endif
-
-/*
* VIRTUAL INTERRUPTS
- *
+ *
* Virtual interrupts that a guest OS may receive from Xen.
- *
- * In the side comments, 'V.' denotes a per-VCPU VIRQ while 'G.' denotes a
- * global VIRQ. The former can be bound once per VCPU and cannot be re-bound.
- * The latter can be allocated only once per guest: they must initially be
- * allocated to VCPU0 but can subsequently be re-bound.
*/
-#define VIRQ_TIMER 0 /* V. Timebase update, and/or requested timeout. */
-#define VIRQ_DEBUG 1 /* V. Request guest to dump debug info. */
-#define VIRQ_CONSOLE 2 /* G. (DOM0) Bytes received on emergency console. */
-#define VIRQ_DOM_EXC 3 /* G. (DOM0) Exceptional event for some domain. */
-#define VIRQ_TBUF 4 /* G. (DOM0) Trace buffer has records available. */
-#define VIRQ_DEBUGGER 6 /* G. (DOM0) A domain has paused for debugging. */
-#define VIRQ_XENOPROF 7 /* V. XenOprofile interrupt: new sample available */
-#define VIRQ_CON_RING 8 /* G. (DOM0) Bytes received on console */
-
-/* Architecture-specific VIRQ definitions. */
-#define VIRQ_ARCH_0 16
-#define VIRQ_ARCH_1 17
-#define VIRQ_ARCH_2 18
-#define VIRQ_ARCH_3 19
-#define VIRQ_ARCH_4 20
-#define VIRQ_ARCH_5 21
-#define VIRQ_ARCH_6 22
-#define VIRQ_ARCH_7 23
-
-#define NR_VIRQS 24
+#define VIRQ_TIMER 0 /* Timebase update, and/or requested timeout. */
+#define VIRQ_DEBUG 1 /* Request guest to dump debug info. */
+#define VIRQ_CONSOLE 2 /* (DOM0) Bytes received on emergency console. */
+#define VIRQ_DOM_EXC 3 /* (DOM0) Exceptional event for some domain. */
+#define VIRQ_DEBUGGER 6 /* (DOM0) A domain has paused for debugging. */
+#define NR_VIRQS 8
/*
* MMU-UPDATE REQUESTS
- *
+ *
* HYPERVISOR_mmu_update() accepts a list of (ptr, val) pairs.
* A foreigndom (FD) can be specified (or DOMID_SELF for none).
* Where the FD has some effect, it is described below.
* ptr[1:0] specifies the appropriate MMU_* command.
- *
+ *
* ptr[1:0] == MMU_NORMAL_PT_UPDATE:
* Updates an entry in a page table. If updating an L1 table, and the new
* table entry is valid/present, the mapped frame must belong to the FD, if
* FD == DOMID_XEN: Map restricted areas of Xen's heap space.
* ptr[:2] -- Machine address of the page-table entry to modify.
* val -- Value to write.
- *
+ *
* ptr[1:0] == MMU_MACHPHYS_UPDATE:
* Updates an entry in the machine->pseudo-physical mapping table.
* ptr[:2] -- Machine address within the frame whose mapping to modify.
* The frame must belong to the FD, if one is specified.
* val -- Value to write into the mapping entry.
- *
- * ptr[1:0] == MMU_PT_UPDATE_PRESERVE_AD:
- * As MMU_NORMAL_PT_UPDATE above, but A/D bits currently in the PTE are ORed
- * with those in @val.
*/
-#define MMU_NORMAL_PT_UPDATE 0 /* checked '*ptr = val'. ptr is MA. */
-#define MMU_MACHPHYS_UPDATE 1 /* ptr = MA of frame to modify entry for */
-#define MMU_PT_UPDATE_PRESERVE_AD 2 /* atomically: *ptr = val | (*ptr&(A|D)) */
+#define MMU_NORMAL_PT_UPDATE 0 /* checked '*ptr = val'. ptr is MA. */
+#define MMU_MACHPHYS_UPDATE 1 /* ptr = MA of frame to modify entry for */
/*
* MMU EXTENDED OPERATIONS
- *
+ *
* HYPERVISOR_mmuext_op() accepts a list of mmuext_op structures.
* A foreigndom (FD) can be specified (or DOMID_SELF for none).
* Where the FD has some effect, it is described below.
- *
+ *
* cmd: MMUEXT_(UN)PIN_*_TABLE
* mfn: Machine frame number to be (un)pinned as a p.t. page.
* The frame must belong to the FD, if one is specified.
- *
+ *
* cmd: MMUEXT_NEW_BASEPTR
* mfn: Machine frame number of new page-table base to install in MMU.
- *
+ *
* cmd: MMUEXT_NEW_USER_BASEPTR [x86/64 only]
* mfn: Machine frame number of new page-table base to install in MMU
* when in user space.
- *
+ *
* cmd: MMUEXT_TLB_FLUSH_LOCAL
* No additional arguments. Flushes local TLB.
- *
+ *
* cmd: MMUEXT_INVLPG_LOCAL
* linear_addr: Linear address to be flushed from the local TLB.
- *
+ *
* cmd: MMUEXT_TLB_FLUSH_MULTI
* vcpumask: Pointer to bitmap of VCPUs to be flushed.
- *
+ *
* cmd: MMUEXT_INVLPG_MULTI
* linear_addr: Linear address to be flushed.
* vcpumask: Pointer to bitmap of VCPUs to be flushed.
- *
+ *
* cmd: MMUEXT_TLB_FLUSH_ALL
* No additional arguments. Flushes all VCPUs' TLBs.
- *
+ *
* cmd: MMUEXT_INVLPG_ALL
* linear_addr: Linear address to be flushed from all VCPUs' TLBs.
- *
+ *
* cmd: MMUEXT_FLUSH_CACHE
* No additional arguments. Writes back and flushes cache contents.
- *
+ *
* cmd: MMUEXT_SET_LDT
* linear_addr: Linear address of LDT base (NB. must be page-aligned).
* nr_ents: Number of entries in LDT.
#ifndef __ASSEMBLY__
struct mmuext_op {
- unsigned int cmd;
- union {
- /* [UN]PIN_TABLE, NEW_BASEPTR, NEW_USER_BASEPTR */
- xen_pfn_t mfn;
- /* INVLPG_LOCAL, INVLPG_ALL, SET_LDT */
- unsigned long linear_addr;
- } arg1;
- union {
- /* SET_LDT */
- unsigned int nr_ents;
- /* TLB_FLUSH_MULTI, INVLPG_MULTI */
- XEN_GUEST_HANDLE_00030205(void) vcpumask;
- } arg2;
+ unsigned int cmd;
+ union {
+ /* [UN]PIN_TABLE, NEW_BASEPTR, NEW_USER_BASEPTR */
+ unsigned long mfn;
+ /* INVLPG_LOCAL, INVLPG_ALL, SET_LDT */
+ unsigned long linear_addr;
+ } arg1;
+ union {
+ /* SET_LDT */
+ unsigned int nr_ents;
+ /* TLB_FLUSH_MULTI, INVLPG_MULTI */
+ void *vcpumask;
+ } arg2;
};
-DEFINE_XEN_GUEST_HANDLE_STRUCT(mmuext_op);
-typedef struct mmuext_op mmuext_op_t;
-DEFINE_XEN_GUEST_HANDLE(mmuext_op_t);
+DEFINE_GUEST_HANDLE_STRUCT(mmuext_op);
#endif
/* These are passed as 'flags' to update_va_mapping. They can be ORed. */
*/
#define VMASST_CMD_enable 0
#define VMASST_CMD_disable 1
-
-/* x86/32 guests: simulate full 4GB segment limits. */
#define VMASST_TYPE_4gb_segments 0
-
-/* x86/32 guests: trap (vector 15) whenever above vmassist is used. */
#define VMASST_TYPE_4gb_segments_notify 1
-
-/*
- * x86 guests: support writes to bottom-level PTEs.
- * NB1. Page-directory entries cannot be written.
- * NB2. Guest must continue to remove all writable mappings of PTEs.
- */
#define VMASST_TYPE_writable_pagetables 2
-
-/* x86/PAE guests: support PDPTs above 4GB. */
#define VMASST_TYPE_pae_extended_cr3 3
-
-#define MAX_VMASST_TYPE 3
+#define MAX_VMASST_TYPE 3
#ifndef __ASSEMBLY__
uint64_t ptr; /* Machine address of PTE. */
uint64_t val; /* New contents of PTE. */
};
-DEFINE_XEN_GUEST_HANDLE_STRUCT(mmu_update);
-typedef struct mmu_update mmu_update_t;
-DEFINE_XEN_GUEST_HANDLE(mmu_update_t);
+DEFINE_GUEST_HANDLE_STRUCT(mmu_update);
/*
* Send an array of these to HYPERVISOR_multicall().
*/
struct multicall_entry {
unsigned long op;
-#if !defined(CONFIG_PARAVIRT_XEN) || defined(HAVE_XEN_PLATFORM_COMPAT_H)
- unsigned long result;
-#else
long result;
-#endif
unsigned long args[6];
};
-DEFINE_XEN_GUEST_HANDLE_STRUCT(multicall_entry);
-typedef struct multicall_entry multicall_entry_t;
-DEFINE_XEN_GUEST_HANDLE(multicall_entry_t);
+DEFINE_GUEST_HANDLE_STRUCT(multicall_entry);
/*
* Event channel endpoints per domain:
#define NR_EVENT_CHANNELS (sizeof(unsigned long) * sizeof(unsigned long) * 64)
struct vcpu_time_info {
- /*
- * Updates to the following values are preceded and followed by an
- * increment of 'version'. The guest can therefore detect updates by
- * looking for changes to 'version'. If the least-significant bit of
- * the version number is set then an update is in progress and the guest
- * must wait to read a consistent set of values.
- * The correct way to interact with the version number is similar to
- * Linux's seqlock: see the implementations of read_seqbegin/read_seqretry.
- */
- uint32_t version;
- uint32_t pad0;
- uint64_t tsc_timestamp; /* TSC at last update of time vals. */
- uint64_t system_time; /* Time, in nanosecs, since boot. */
- /*
- * Current system time:
- * system_time +
- * ((((tsc - tsc_timestamp) << tsc_shift) * tsc_to_system_mul) >> 32)
- * CPU frequency (Hz):
- * ((10^9 << 32) / tsc_to_system_mul) >> tsc_shift
- */
- uint32_t tsc_to_system_mul;
- int8_t tsc_shift;
- int8_t pad1[3];
+ /*
+ * Updates to the following values are preceded and followed
+ * by an increment of 'version'. The guest can therefore
+ * detect updates by looking for changes to 'version'. If the
+ * least-significant bit of the version number is set then an
+ * update is in progress and the guest must wait to read a
+ * consistent set of values. The correct way to interact with
+ * the version number is similar to Linux's seqlock: see the
+ * implementations of read_seqbegin/read_seqretry.
+ */
+ uint32_t version;
+ uint32_t pad0;
+ uint64_t tsc_timestamp; /* TSC at last update of time vals. */
+ uint64_t system_time; /* Time, in nanosecs, since boot. */
+ /*
+ * Current system time:
+ * system_time + ((tsc - tsc_timestamp) << tsc_shift) * tsc_to_system_mul
+ * CPU frequency (Hz):
+ * ((10^9 << 32) / tsc_to_system_mul) >> tsc_shift
+ */
+ uint32_t tsc_to_system_mul;
+ int8_t tsc_shift;
+ int8_t pad1[3];
}; /* 32 bytes */
-typedef struct vcpu_time_info vcpu_time_info_t;
struct vcpu_info {
- /*
- * 'evtchn_upcall_pending' is written non-zero by Xen to indicate
- * a pending notification for a particular VCPU. It is then cleared
- * by the guest OS /before/ checking for pending work, thus avoiding
- * a set-and-check race. Note that the mask is only accessed by Xen
- * on the CPU that is currently hosting the VCPU. This means that the
- * pending and mask flags can be updated by the guest without special
- * synchronisation (i.e., no need for the x86 LOCK prefix).
- * This may seem suboptimal because if the pending flag is set by
- * a different CPU then an IPI may be scheduled even when the mask
- * is set. However, note:
- * 1. The task of 'interrupt holdoff' is covered by the per-event-
- * channel mask bits. A 'noisy' event that is continually being
- * triggered can be masked at source at this very precise
- * granularity.
- * 2. The main purpose of the per-VCPU mask is therefore to restrict
- * reentrant execution: whether for concurrency control, or to
- * prevent unbounded stack usage. Whatever the purpose, we expect
- * that the mask will be asserted only for short periods at a time,
- * and so the likelihood of a 'spurious' IPI is suitably small.
- * The mask is read before making an event upcall to the guest: a
- * non-zero mask therefore guarantees that the VCPU will not receive
- * an upcall activation. The mask is cleared when the VCPU requests
- * to block: this avoids wakeup-waiting races.
- */
- uint8_t evtchn_upcall_pending;
- uint8_t evtchn_upcall_mask;
- unsigned long evtchn_pending_sel;
- struct arch_vcpu_info arch;
- struct vcpu_time_info time;
+ /*
+ * 'evtchn_upcall_pending' is written non-zero by Xen to indicate
+ * a pending notification for a particular VCPU. It is then cleared
+ * by the guest OS /before/ checking for pending work, thus avoiding
+ * a set-and-check race. Note that the mask is only accessed by Xen
+ * on the CPU that is currently hosting the VCPU. This means that the
+ * pending and mask flags can be updated by the guest without special
+ * synchronisation (i.e., no need for the x86 LOCK prefix).
+ * This may seem suboptimal because if the pending flag is set by
+ * a different CPU then an IPI may be scheduled even when the mask
+ * is set. However, note:
+ * 1. The task of 'interrupt holdoff' is covered by the per-event-
+ * channel mask bits. A 'noisy' event that is continually being
+ * triggered can be masked at source at this very precise
+ * granularity.
+ * 2. The main purpose of the per-VCPU mask is therefore to restrict
+ * reentrant execution: whether for concurrency control, or to
+ * prevent unbounded stack usage. Whatever the purpose, we expect
+ * that the mask will be asserted only for short periods at a time,
+ * and so the likelihood of a 'spurious' IPI is suitably small.
+ * The mask is read before making an event upcall to the guest: a
+ * non-zero mask therefore guarantees that the VCPU will not receive
+ * an upcall activation. The mask is cleared when the VCPU requests
+ * to block: this avoids wakeup-waiting races.
+ */
+ uint8_t evtchn_upcall_pending;
+ uint8_t evtchn_upcall_mask;
+ unsigned long evtchn_pending_sel;
+ struct arch_vcpu_info arch;
+ struct vcpu_time_info time;
}; /* 64 bytes (x86) */
-#ifndef __XEN__
-typedef struct vcpu_info vcpu_info_t;
-#endif
/*
* Xen/kernel shared data -- pointer provided in start_info.
- *
- * This structure is defined to be both smaller than a page, and the
- * only data on the shared page, but may vary in actual size even within
- * compatible Xen versions; guests should not rely on the size
- * of this structure remaining constant.
+ * NB. We expect that this struct is smaller than a page.
*/
struct shared_info {
- struct vcpu_info vcpu_info[MAX_VIRT_CPUS];
-
- /*
- * A domain can create "event channels" on which it can send and receive
- * asynchronous event notifications. There are three classes of event that
- * are delivered by this mechanism:
- * 1. Bi-directional inter- and intra-domain connections. Domains must
- * arrange out-of-band to set up a connection (usually by allocating
- * an unbound 'listener' port and avertising that via a storage service
- * such as xenstore).
- * 2. Physical interrupts. A domain with suitable hardware-access
- * privileges can bind an event-channel port to a physical interrupt
- * source.
- * 3. Virtual interrupts ('events'). A domain can bind an event-channel
- * port to a virtual interrupt source, such as the virtual-timer
- * device or the emergency console.
- *
- * Event channels are addressed by a "port index". Each channel is
- * associated with two bits of information:
- * 1. PENDING -- notifies the domain that there is a pending notification
- * to be processed. This bit is cleared by the guest.
- * 2. MASK -- if this bit is clear then a 0->1 transition of PENDING
- * will cause an asynchronous upcall to be scheduled. This bit is only
- * updated by the guest. It is read-only within Xen. If a channel
- * becomes pending while the channel is masked then the 'edge' is lost
- * (i.e., when the channel is unmasked, the guest must manually handle
- * pending notifications as no upcall will be scheduled by Xen).
- *
- * To expedite scanning of pending notifications, any 0->1 pending
- * transition on an unmasked channel causes a corresponding bit in a
- * per-vcpu selector word to be set. Each bit in the selector covers a
- * 'C long' in the PENDING bitfield array.
- */
- unsigned long evtchn_pending[sizeof(unsigned long) * 8];
- unsigned long evtchn_mask[sizeof(unsigned long) * 8];
-
- /*
- * Wallclock time: updated only by control software. Guests should base
- * their gettimeofday() syscall on this wallclock-base value.
- */
- uint32_t wc_version; /* Version counter: see vcpu_time_info_t. */
- uint32_t wc_sec; /* Secs 00:00:00 UTC, Jan 1, 1970. */
- uint32_t wc_nsec; /* Nsecs 00:00:00 UTC, Jan 1, 1970. */
-
- struct arch_shared_info arch;
+ struct vcpu_info vcpu_info[MAX_VIRT_CPUS];
+
+ /*
+ * A domain can create "event channels" on which it can send and receive
+ * asynchronous event notifications. There are three classes of event that
+ * are delivered by this mechanism:
+ * 1. Bi-directional inter- and intra-domain connections. Domains must
+ * arrange out-of-band to set up a connection (usually by allocating
+ * an unbound 'listener' port and avertising that via a storage service
+ * such as xenstore).
+ * 2. Physical interrupts. A domain with suitable hardware-access
+ * privileges can bind an event-channel port to a physical interrupt
+ * source.
+ * 3. Virtual interrupts ('events'). A domain can bind an event-channel
+ * port to a virtual interrupt source, such as the virtual-timer
+ * device or the emergency console.
+ *
+ * Event channels are addressed by a "port index". Each channel is
+ * associated with two bits of information:
+ * 1. PENDING -- notifies the domain that there is a pending notification
+ * to be processed. This bit is cleared by the guest.
+ * 2. MASK -- if this bit is clear then a 0->1 transition of PENDING
+ * will cause an asynchronous upcall to be scheduled. This bit is only
+ * updated by the guest. It is read-only within Xen. If a channel
+ * becomes pending while the channel is masked then the 'edge' is lost
+ * (i.e., when the channel is unmasked, the guest must manually handle
+ * pending notifications as no upcall will be scheduled by Xen).
+ *
+ * To expedite scanning of pending notifications, any 0->1 pending
+ * transition on an unmasked channel causes a corresponding bit in a
+ * per-vcpu selector word to be set. Each bit in the selector covers a
+ * 'C long' in the PENDING bitfield array.
+ */
+ unsigned long evtchn_pending[sizeof(unsigned long) * 8];
+ unsigned long evtchn_mask[sizeof(unsigned long) * 8];
+
+ /*
+ * Wallclock time: updated only by control software. Guests should base
+ * their gettimeofday() syscall on this wallclock-base value.
+ */
+ uint32_t wc_version; /* Version counter: see vcpu_time_info_t. */
+ uint32_t wc_sec; /* Secs 00:00:00 UTC, Jan 1, 1970. */
+ uint32_t wc_nsec; /* Nsecs 00:00:00 UTC, Jan 1, 1970. */
+
+ struct arch_shared_info arch;
};
-#ifndef __XEN__
-typedef struct shared_info shared_info_t;
-#endif
/*
- * Start-of-day memory layout:
+ * Start-of-day memory layout for the initial domain (DOM0):
* 1. The domain is started within contiguous virtual-memory region.
- * 2. The contiguous region ends on an aligned 4MB boundary.
- * 3. This the order of bootstrap elements in the initial virtual region:
+ * 2. The contiguous region begins and ends on an aligned 4MB boundary.
+ * 3. The region start corresponds to the load address of the OS image.
+ * If the load address is not 4MB aligned then the address is rounded down.
+ * 4. This the order of bootstrap elements in the initial virtual region:
* a. relocated kernel image
* b. initial ram disk [mod_start, mod_len]
* c. list of allocated page frames [mfn_list, nr_pages]
* d. start_info_t structure [register ESI (x86)]
* e. bootstrap page tables [pt_base, CR3 (x86)]
* f. bootstrap stack [register ESP (x86)]
- * 4. Bootstrap elements are packed together, but each is 4kB-aligned.
- * 5. The initial ram disk may be omitted.
- * 6. The list of page frames forms a contiguous 'pseudo-physical' memory
+ * 5. Bootstrap elements are packed together, but each is 4kB-aligned.
+ * 6. The initial ram disk may be omitted.
+ * 7. The list of page frames forms a contiguous 'pseudo-physical' memory
* layout for the domain. In particular, the bootstrap virtual-memory
* region is a 1:1 mapping to the first section of the pseudo-physical map.
- * 7. All bootstrap elements are mapped read-writable for the guest OS. The
+ * 8. All bootstrap elements are mapped read-writable for the guest OS. The
* only exception is the bootstrap page table, which is mapped read-only.
- * 8. There is guaranteed to be at least 512kB padding after the final
+ * 9. There is guaranteed to be at least 512kB padding after the final
* bootstrap element. If necessary, the bootstrap virtual region is
* extended by an extra 4MB to ensure this.
*/
#define MAX_GUEST_CMDLINE 1024
struct start_info {
- /* THE FOLLOWING ARE FILLED IN BOTH ON INITIAL BOOT AND ON RESUME. */
- char magic[32]; /* "xen-<version>-<platform>". */
- unsigned long nr_pages; /* Total pages allocated to this domain. */
- unsigned long shared_info; /* MACHINE address of shared info struct. */
- uint32_t flags; /* SIF_xxx flags. */
- xen_pfn_t store_mfn; /* MACHINE page number of shared page. */
- uint32_t store_evtchn; /* Event channel for store communication. */
- union {
- struct {
- xen_pfn_t mfn; /* MACHINE page number of console page. */
- uint32_t evtchn; /* Event channel for console page. */
- } domU;
- struct {
- uint32_t info_off; /* Offset of console_info struct. */
- uint32_t info_size; /* Size of console_info struct from start.*/
- } dom0;
- } console;
- /* THE FOLLOWING ARE ONLY FILLED IN ON INITIAL BOOT (NOT RESUME). */
- unsigned long pt_base; /* VIRTUAL address of page directory. */
- unsigned long nr_pt_frames; /* Number of bootstrap p.t. frames. */
- unsigned long mfn_list; /* VIRTUAL address of page-frame list. */
- unsigned long mod_start; /* VIRTUAL address of pre-loaded module. */
- unsigned long mod_len; /* Size (bytes) of pre-loaded module. */
- int8_t cmd_line[MAX_GUEST_CMDLINE];
+ /* THE FOLLOWING ARE FILLED IN BOTH ON INITIAL BOOT AND ON RESUME. */
+ char magic[32]; /* "xen-<version>-<platform>". */
+ unsigned long nr_pages; /* Total pages allocated to this domain. */
+ unsigned long shared_info; /* MACHINE address of shared info struct. */
+ uint32_t flags; /* SIF_xxx flags. */
+ unsigned long store_mfn; /* MACHINE page number of shared page. */
+ uint32_t store_evtchn; /* Event channel for store communication. */
+ union {
+ struct {
+ unsigned long mfn; /* MACHINE page number of console page. */
+ uint32_t evtchn; /* Event channel for console page. */
+ } domU;
+ struct {
+ uint32_t info_off; /* Offset of console_info struct. */
+ uint32_t info_size; /* Size of console_info struct from start.*/
+ } dom0;
+ } console;
+ /* THE FOLLOWING ARE ONLY FILLED IN ON INITIAL BOOT (NOT RESUME). */
+ unsigned long pt_base; /* VIRTUAL address of page directory. */
+ unsigned long nr_pt_frames; /* Number of bootstrap p.t. frames. */
+ unsigned long mfn_list; /* VIRTUAL address of page-frame list. */
+ unsigned long mod_start; /* VIRTUAL address of pre-loaded module. */
+ unsigned long mod_len; /* Size (bytes) of pre-loaded module. */
+ int8_t cmd_line[MAX_GUEST_CMDLINE];
};
-typedef struct start_info start_info_t;
-
-/* New console union for dom0 introduced in 0x00030203. */
-#if __XEN_INTERFACE_VERSION__ < 0x00030203
-#define console_mfn console.domU.mfn
-#define console_evtchn console.domU.evtchn
-#endif
/* These flags are passed in the 'flags' field of start_info_t. */
#define SIF_PRIVILEGED (1<<0) /* Is the domain privileged? */
#define SIF_INITDOMAIN (1<<1) /* Is this the initial control domain? */
-typedef struct dom0_vga_console_info {
- uint8_t video_type; /* DOM0_VGA_CONSOLE_??? */
-#define XEN_VGATYPE_TEXT_MODE_3 0x03
-#define XEN_VGATYPE_VESA_LFB 0x23
-
- union {
- struct {
- /* Font height, in pixels. */
- uint16_t font_height;
- /* Cursor location (column, row). */
- uint16_t cursor_x, cursor_y;
- /* Number of rows and columns (dimensions in characters). */
- uint16_t rows, columns;
- } text_mode_3;
-
- struct {
- /* Width and height, in pixels. */
- uint16_t width, height;
- /* Bytes per scan line. */
- uint16_t bytes_per_line;
- /* Bits per pixel. */
- uint16_t bits_per_pixel;
- /* LFB physical address, and size (in units of 64kB). */
- uint32_t lfb_base;
- uint32_t lfb_size;
- /* RGB mask offsets and sizes, as defined by VBE 1.2+ */
- uint8_t red_pos, red_size;
- uint8_t green_pos, green_size;
- uint8_t blue_pos, blue_size;
- uint8_t rsvd_pos, rsvd_size;
-#if __XEN_INTERFACE_VERSION__ >= 0x00030206
- /* VESA capabilities (offset 0xa, VESA command 0x4f00). */
- uint32_t gbl_caps;
- /* Mode attributes (offset 0x0, VESA command 0x4f01). */
- uint16_t mode_attrs;
-#endif
- } vesa_lfb;
- } u;
-} dom0_vga_console_info_t;
-#define xen_vga_console_info dom0_vga_console_info
-#define xen_vga_console_info_t dom0_vga_console_info_t
+typedef uint64_t cpumap_t;
typedef uint8_t xen_domain_handle_t[16];
#define __mk_unsigned_long(x) x ## UL
#define mk_unsigned_long(x) __mk_unsigned_long(x)
-__DEFINE_XEN_GUEST_HANDLE(uint8, uint8_t);
-__DEFINE_XEN_GUEST_HANDLE(uint16, uint16_t);
-__DEFINE_XEN_GUEST_HANDLE(uint32, uint32_t);
-__DEFINE_XEN_GUEST_HANDLE(uint64, uint64_t);
-
#else /* __ASSEMBLY__ */
/* In assembly code we cannot use C numeric constant suffixes. */
#endif /* !__ASSEMBLY__ */
-/* Default definitions for macros used by domctl/sysctl. */
-#if defined(__XEN__) || defined(__XEN_TOOLS__)
-#ifndef uint64_aligned_t
-#define uint64_aligned_t uint64_t
-#endif
-#ifndef XEN_GUEST_HANDLE_64
-#define XEN_GUEST_HANDLE_64(name) XEN_GUEST_HANDLE(name)
-#endif
-#endif
-
#endif /* __XEN_PUBLIC_XEN_H__ */
-
-/*
- * Local variables:
- * mode: C
- * c-set-style: "BSD"
- * c-basic-offset: 4
- * tab-width: 4
- * indent-tabs-mode: nil
- * End:
- */
projects / linux-flexiantxendom0-3.2.10.git / blobdiff