3a9fd8242b
The current path of the Xen headers at /sys/xen/interface/ is not correct, as those headers are imported verbatim from the Xen sources and shouldn't be modified, as any modifications would be lost when a new version is imported. Changes to the public headers must be first done in Xen upstream so that they can be backported and new imports will already carry them. Import Xen 4.16 headers in sys/contrib/xen/. It's unlikely that we will import different Xen code, so don't place them inside of any subdirectory. If in the future other pieces of Xen code need to be imported the headers will need to move into an include/ subdirectory. Note that this commit does not yet modify the include path to use the newly imported headers. Sponsored by: Citrix Systems R&D
144 lines
4.9 KiB
C
144 lines
4.9 KiB
C
/*
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* ioreq.h: I/O request definitions for device models
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* Copyright (c) 2004, Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _IOREQ_H_
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#define _IOREQ_H_
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#define IOREQ_READ 1
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#define IOREQ_WRITE 0
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#define STATE_IOREQ_NONE 0
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#define STATE_IOREQ_READY 1
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#define STATE_IOREQ_INPROCESS 2
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#define STATE_IORESP_READY 3
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#define IOREQ_TYPE_PIO 0 /* pio */
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#define IOREQ_TYPE_COPY 1 /* mmio ops */
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#define IOREQ_TYPE_PCI_CONFIG 2
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#define IOREQ_TYPE_TIMEOFFSET 7
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#define IOREQ_TYPE_INVALIDATE 8 /* mapcache */
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/*
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* VMExit dispatcher should cooperate with instruction decoder to
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* prepare this structure and notify service OS and DM by sending
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* virq.
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*
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* For I/O type IOREQ_TYPE_PCI_CONFIG, the physical address is formatted
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* as follows:
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*
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* 63....48|47..40|39..35|34..32|31........0
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* SEGMENT |BUS |DEV |FN |OFFSET
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*/
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struct ioreq {
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uint64_t addr; /* physical address */
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uint64_t data; /* data (or paddr of data) */
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uint32_t count; /* for rep prefixes */
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uint32_t size; /* size in bytes */
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uint32_t vp_eport; /* evtchn for notifications to/from device model */
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uint16_t _pad0;
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uint8_t state:4;
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uint8_t data_is_ptr:1; /* if 1, data above is the guest paddr
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* of the real data to use. */
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uint8_t dir:1; /* 1=read, 0=write */
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uint8_t df:1;
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uint8_t _pad1:1;
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uint8_t type; /* I/O type */
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};
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typedef struct ioreq ioreq_t;
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struct shared_iopage {
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struct ioreq vcpu_ioreq[1];
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};
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typedef struct shared_iopage shared_iopage_t;
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struct buf_ioreq {
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uint8_t type; /* I/O type */
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uint8_t pad:1;
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uint8_t dir:1; /* 1=read, 0=write */
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uint8_t size:2; /* 0=>1, 1=>2, 2=>4, 3=>8. If 8, use two buf_ioreqs */
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uint32_t addr:20;/* physical address */
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uint32_t data; /* data */
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};
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typedef struct buf_ioreq buf_ioreq_t;
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#define IOREQ_BUFFER_SLOT_NUM 511 /* 8 bytes each, plus 2 4-byte indexes */
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struct buffered_iopage {
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#ifdef __XEN__
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union bufioreq_pointers {
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struct {
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#endif
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uint32_t read_pointer;
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uint32_t write_pointer;
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#ifdef __XEN__
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};
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uint64_t full;
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} ptrs;
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#endif
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buf_ioreq_t buf_ioreq[IOREQ_BUFFER_SLOT_NUM];
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}; /* NB. Size of this structure must be no greater than one page. */
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typedef struct buffered_iopage buffered_iopage_t;
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/*
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* ACPI Control/Event register locations. Location is controlled by a
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* version number in HVM_PARAM_ACPI_IOPORTS_LOCATION.
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*/
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/*
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* Version 0 (default): Traditional (obsolete) Xen locations.
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*
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* These are now only used for compatibility with VMs migrated
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* from older Xen versions.
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*/
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#define ACPI_PM1A_EVT_BLK_ADDRESS_V0 0x1f40
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#define ACPI_PM1A_CNT_BLK_ADDRESS_V0 (ACPI_PM1A_EVT_BLK_ADDRESS_V0 + 0x04)
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#define ACPI_PM_TMR_BLK_ADDRESS_V0 (ACPI_PM1A_EVT_BLK_ADDRESS_V0 + 0x08)
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#define ACPI_GPE0_BLK_ADDRESS_V0 (ACPI_PM_TMR_BLK_ADDRESS_V0 + 0x20)
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#define ACPI_GPE0_BLK_LEN_V0 0x08
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/* Version 1: Locations preferred by modern Qemu (including Qemu-trad). */
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#define ACPI_PM1A_EVT_BLK_ADDRESS_V1 0xb000
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#define ACPI_PM1A_CNT_BLK_ADDRESS_V1 (ACPI_PM1A_EVT_BLK_ADDRESS_V1 + 0x04)
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#define ACPI_PM_TMR_BLK_ADDRESS_V1 (ACPI_PM1A_EVT_BLK_ADDRESS_V1 + 0x08)
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#define ACPI_GPE0_BLK_ADDRESS_V1 0xafe0
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#define ACPI_GPE0_BLK_LEN_V1 0x04
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/* Compatibility definitions for the default location (version 0). */
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#define ACPI_PM1A_EVT_BLK_ADDRESS ACPI_PM1A_EVT_BLK_ADDRESS_V0
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#define ACPI_PM1A_CNT_BLK_ADDRESS ACPI_PM1A_CNT_BLK_ADDRESS_V0
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#define ACPI_PM_TMR_BLK_ADDRESS ACPI_PM_TMR_BLK_ADDRESS_V0
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#define ACPI_GPE0_BLK_ADDRESS ACPI_GPE0_BLK_ADDRESS_V0
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#define ACPI_GPE0_BLK_LEN ACPI_GPE0_BLK_LEN_V0
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#endif /* _IOREQ_H_ */
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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