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ipxe/src/include/xen/hvm/hvm_op.h

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/*
* 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.
*/
#ifndef __XEN_PUBLIC_HVM_HVM_OP_H__
#define __XEN_PUBLIC_HVM_HVM_OP_H__
FILE_LICENCE ( MIT );
#include "../xen.h"
#include "../trace.h"
#include "../event_channel.h"
/* Get/set subcommands: extra argument == pointer to xen_hvm_param struct. */
#define HVMOP_set_param 0
#define HVMOP_get_param 1
struct xen_hvm_param {
domid_t domid; /* IN */
uint32_t index; /* IN */
uint64_t value; /* IN/OUT */
};
typedef struct xen_hvm_param xen_hvm_param_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_param_t);
/* Set the logical level of one of a domain's PCI INTx wires. */
#define HVMOP_set_pci_intx_level 2
struct xen_hvm_set_pci_intx_level {
/* Domain to be updated. */
domid_t domid;
/* PCI INTx identification in PCI topology (domain:bus:device:intx). */
uint8_t domain, bus, device, intx;
/* Assertion level (0 = unasserted, 1 = asserted). */
uint8_t level;
};
typedef struct xen_hvm_set_pci_intx_level xen_hvm_set_pci_intx_level_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_set_pci_intx_level_t);
/* Set the logical level of one of a domain's ISA IRQ wires. */
#define HVMOP_set_isa_irq_level 3
struct xen_hvm_set_isa_irq_level {
/* Domain to be updated. */
domid_t domid;
/* ISA device identification, by ISA IRQ (0-15). */
uint8_t isa_irq;
/* Assertion level (0 = unasserted, 1 = asserted). */
uint8_t level;
};
typedef struct xen_hvm_set_isa_irq_level xen_hvm_set_isa_irq_level_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_set_isa_irq_level_t);
#define HVMOP_set_pci_link_route 4
struct xen_hvm_set_pci_link_route {
/* Domain to be updated. */
domid_t domid;
/* PCI link identifier (0-3). */
uint8_t link;
/* ISA IRQ (1-15), or 0 (disable link). */
uint8_t isa_irq;
};
typedef struct xen_hvm_set_pci_link_route xen_hvm_set_pci_link_route_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_set_pci_link_route_t);
/* Flushes all VCPU TLBs: @arg must be NULL. */
#define HVMOP_flush_tlbs 5
typedef enum {
HVMMEM_ram_rw, /* Normal read/write guest RAM */
HVMMEM_ram_ro, /* Read-only; writes are discarded */
HVMMEM_mmio_dm, /* Reads and write go to the device model */
} hvmmem_type_t;
/* Following tools-only interfaces may change in future. */
#if defined(__XEN__) || defined(__XEN_TOOLS__)
/* Track dirty VRAM. */
#define HVMOP_track_dirty_vram 6
struct xen_hvm_track_dirty_vram {
/* Domain to be tracked. */
domid_t domid;
/* Number of pages to track. */
uint32_t nr;
/* First pfn to track. */
uint64_aligned_t first_pfn;
/* OUT variable. */
/* Dirty bitmap buffer. */
XEN_GUEST_HANDLE_64(uint8) dirty_bitmap;
};
typedef struct xen_hvm_track_dirty_vram xen_hvm_track_dirty_vram_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_track_dirty_vram_t);
/* Notify that some pages got modified by the Device Model. */
#define HVMOP_modified_memory 7
struct xen_hvm_modified_memory {
/* Domain to be updated. */
domid_t domid;
/* Number of pages. */
uint32_t nr;
/* First pfn. */
uint64_aligned_t first_pfn;
};
typedef struct xen_hvm_modified_memory xen_hvm_modified_memory_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_modified_memory_t);
#define HVMOP_set_mem_type 8
/* Notify that a region of memory is to be treated in a specific way. */
struct xen_hvm_set_mem_type {
/* Domain to be updated. */
domid_t domid;
/* Memory type */
uint16_t hvmmem_type;
/* Number of pages. */
uint32_t nr;
/* First pfn. */
uint64_aligned_t first_pfn;
};
typedef struct xen_hvm_set_mem_type xen_hvm_set_mem_type_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_set_mem_type_t);
#endif /* defined(__XEN__) || defined(__XEN_TOOLS__) */
/* Hint from PV drivers for pagetable destruction. */
#define HVMOP_pagetable_dying 9
struct xen_hvm_pagetable_dying {
/* Domain with a pagetable about to be destroyed. */
domid_t domid;
uint16_t pad[3]; /* align next field on 8-byte boundary */
/* guest physical address of the toplevel pagetable dying */
uint64_t gpa;
};
typedef struct xen_hvm_pagetable_dying xen_hvm_pagetable_dying_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_pagetable_dying_t);
/* Get the current Xen time, in nanoseconds since system boot. */
#define HVMOP_get_time 10
struct xen_hvm_get_time {
uint64_t now; /* OUT */
};
typedef struct xen_hvm_get_time xen_hvm_get_time_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_get_time_t);
#define HVMOP_xentrace 11
struct xen_hvm_xentrace {
uint16_t event, extra_bytes;
uint8_t extra[TRACE_EXTRA_MAX * sizeof(uint32_t)];
};
typedef struct xen_hvm_xentrace xen_hvm_xentrace_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_xentrace_t);
/* Following tools-only interfaces may change in future. */
#if defined(__XEN__) || defined(__XEN_TOOLS__)
/* Deprecated by XENMEM_access_op_set_access */
#define HVMOP_set_mem_access 12
/* Deprecated by XENMEM_access_op_get_access */
#define HVMOP_get_mem_access 13
#define HVMOP_inject_trap 14
/* Inject a trap into a VCPU, which will get taken up on the next
* scheduling of it. Note that the caller should know enough of the
* state of the CPU before injecting, to know what the effect of
* injecting the trap will be.
*/
struct xen_hvm_inject_trap {
/* Domain to be queried. */
domid_t domid;
/* VCPU */
uint32_t vcpuid;
/* Vector number */
uint32_t vector;
/* Trap type (HVMOP_TRAP_*) */
uint32_t type;
/* NB. This enumeration precisely matches hvm.h:X86_EVENTTYPE_* */
# define HVMOP_TRAP_ext_int 0 /* external interrupt */
# define HVMOP_TRAP_nmi 2 /* nmi */
# define HVMOP_TRAP_hw_exc 3 /* hardware exception */
# define HVMOP_TRAP_sw_int 4 /* software interrupt (CD nn) */
# define HVMOP_TRAP_pri_sw_exc 5 /* ICEBP (F1) */
# define HVMOP_TRAP_sw_exc 6 /* INT3 (CC), INTO (CE) */
/* Error code, or ~0u to skip */
uint32_t error_code;
/* Intruction length */
uint32_t insn_len;
/* CR2 for page faults */
uint64_aligned_t cr2;
};
typedef struct xen_hvm_inject_trap xen_hvm_inject_trap_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_inject_trap_t);
#endif /* defined(__XEN__) || defined(__XEN_TOOLS__) */
#define HVMOP_get_mem_type 15
/* Return hvmmem_type_t for the specified pfn. */
struct xen_hvm_get_mem_type {
/* Domain to be queried. */
domid_t domid;
/* OUT variable. */
uint16_t mem_type;
uint16_t pad[2]; /* align next field on 8-byte boundary */
/* IN variable. */
uint64_t pfn;
};
typedef struct xen_hvm_get_mem_type xen_hvm_get_mem_type_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_get_mem_type_t);
/* Following tools-only interfaces may change in future. */
#if defined(__XEN__) || defined(__XEN_TOOLS__)
/* MSI injection for emulated devices */
#define HVMOP_inject_msi 16
struct xen_hvm_inject_msi {
/* Domain to be injected */
domid_t domid;
/* Data -- lower 32 bits */
uint32_t data;
/* Address (0xfeexxxxx) */
uint64_t addr;
};
typedef struct xen_hvm_inject_msi xen_hvm_inject_msi_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_inject_msi_t);
/*
* IOREQ Servers
*
* The interface between an I/O emulator an Xen is called an IOREQ Server.
* A domain supports a single 'legacy' IOREQ Server which is instantiated if
* parameter...
*
* HVM_PARAM_IOREQ_PFN is read (to get the gmfn containing the synchronous
* ioreq structures), or...
* HVM_PARAM_BUFIOREQ_PFN is read (to get the gmfn containing the buffered
* ioreq ring), or...
* HVM_PARAM_BUFIOREQ_EVTCHN is read (to get the event channel that Xen uses
* to request buffered I/O emulation).
*
* The following hypercalls facilitate the creation of IOREQ Servers for
* 'secondary' emulators which are invoked to implement port I/O, memory, or
* PCI config space ranges which they explicitly register.
*/
typedef uint16_t ioservid_t;
/*
* HVMOP_create_ioreq_server: Instantiate a new IOREQ Server for a secondary
* emulator servicing domain <domid>.
*
* The <id> handed back is unique for <domid>. If <handle_bufioreq> is zero
* the buffered ioreq ring will not be allocated and hence all emulation
* requestes to this server will be synchronous.
*/
#define HVMOP_create_ioreq_server 17
struct xen_hvm_create_ioreq_server {
domid_t domid; /* IN - domain to be serviced */
uint8_t handle_bufioreq; /* IN - should server handle buffered ioreqs */
ioservid_t id; /* OUT - server id */
};
typedef struct xen_hvm_create_ioreq_server xen_hvm_create_ioreq_server_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_create_ioreq_server_t);
/*
* HVMOP_get_ioreq_server_info: Get all the information necessary to access
* IOREQ Server <id>.
*
* The emulator needs to map the synchronous ioreq structures and buffered
* ioreq ring (if it exists) that Xen uses to request emulation. These are
* hosted in domain <domid>'s gmfns <ioreq_pfn> and <bufioreq_pfn>
* respectively. In addition, if the IOREQ Server is handling buffered
* emulation requests, the emulator needs to bind to event channel
* <bufioreq_port> to listen for them. (The event channels used for
* synchronous emulation requests are specified in the per-CPU ioreq
* structures in <ioreq_pfn>).
* If the IOREQ Server is not handling buffered emulation requests then the
* values handed back in <bufioreq_pfn> and <bufioreq_port> will both be 0.
*/
#define HVMOP_get_ioreq_server_info 18
struct xen_hvm_get_ioreq_server_info {
domid_t domid; /* IN - domain to be serviced */
ioservid_t id; /* IN - server id */
evtchn_port_t bufioreq_port; /* OUT - buffered ioreq port */
uint64_aligned_t ioreq_pfn; /* OUT - sync ioreq pfn */
uint64_aligned_t bufioreq_pfn; /* OUT - buffered ioreq pfn */
};
typedef struct xen_hvm_get_ioreq_server_info xen_hvm_get_ioreq_server_info_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_get_ioreq_server_info_t);
/*
* HVM_map_io_range_to_ioreq_server: Register an I/O range of domain <domid>
* for emulation by the client of IOREQ
* Server <id>
* HVM_unmap_io_range_from_ioreq_server: Deregister an I/O range of <domid>
* for emulation by the client of IOREQ
* Server <id>
*
* There are three types of I/O that can be emulated: port I/O, memory accesses
* and PCI config space accesses. The <type> field denotes which type of range
* the <start> and <end> (inclusive) fields are specifying.
* PCI config space ranges are specified by segment/bus/device/function values
* which should be encoded using the HVMOP_PCI_SBDF helper macro below.
*
* NOTE: unless an emulation request falls entirely within a range mapped
* by a secondary emulator, it will not be passed to that emulator.
*/
#define HVMOP_map_io_range_to_ioreq_server 19
#define HVMOP_unmap_io_range_from_ioreq_server 20
struct xen_hvm_io_range {
domid_t domid; /* IN - domain to be serviced */
ioservid_t id; /* IN - server id */
uint32_t type; /* IN - type of range */
# define HVMOP_IO_RANGE_PORT 0 /* I/O port range */
# define HVMOP_IO_RANGE_MEMORY 1 /* MMIO range */
# define HVMOP_IO_RANGE_PCI 2 /* PCI segment/bus/dev/func range */
uint64_aligned_t start, end; /* IN - inclusive start and end of range */
};
typedef struct xen_hvm_io_range xen_hvm_io_range_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_io_range_t);
#define HVMOP_PCI_SBDF(s,b,d,f) \
((((s) & 0xffff) << 16) | \
(((b) & 0xff) << 8) | \
(((d) & 0x1f) << 3) | \
((f) & 0x07))
/*
* HVMOP_destroy_ioreq_server: Destroy the IOREQ Server <id> servicing domain
* <domid>.
*
* Any registered I/O ranges will be automatically deregistered.
*/
#define HVMOP_destroy_ioreq_server 21
struct xen_hvm_destroy_ioreq_server {
domid_t domid; /* IN - domain to be serviced */
ioservid_t id; /* IN - server id */
};
typedef struct xen_hvm_destroy_ioreq_server xen_hvm_destroy_ioreq_server_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_destroy_ioreq_server_t);
/*
* HVMOP_set_ioreq_server_state: Enable or disable the IOREQ Server <id> servicing
* domain <domid>.
*
* The IOREQ Server will not be passed any emulation requests until it is in the
* enabled state.
* Note that the contents of the ioreq_pfn and bufioreq_fn (see
* HVMOP_get_ioreq_server_info) are not meaningful until the IOREQ Server is in
* the enabled state.
*/
#define HVMOP_set_ioreq_server_state 22
struct xen_hvm_set_ioreq_server_state {
domid_t domid; /* IN - domain to be serviced */
ioservid_t id; /* IN - server id */
uint8_t enabled; /* IN - enabled? */
};
typedef struct xen_hvm_set_ioreq_server_state xen_hvm_set_ioreq_server_state_t;
DEFINE_XEN_GUEST_HANDLE(xen_hvm_set_ioreq_server_state_t);
#endif /* defined(__XEN__) || defined(__XEN_TOOLS__) */
#endif /* __XEN_PUBLIC_HVM_HVM_OP_H__ */
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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