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audk/OvmfPkg/Include/IndustryStandard/Xen/io/ring.h

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OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
/******************************************************************************
* ring.h
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* Shared producer-consumer ring macros.
*
OvmfPkg/IndustryStandard/Xen: replace MIT license text with SPDX ID The header files under "OvmfPkg/Include/IndustryStandard/Xen" include the MIT License text. Replace those license blocks with "SPDX-License-Identifier: MIT" (which refers to <https://spdx.org/licenses/MIT.html>) for easier parsing by machines (and humans). This follows the tree-wide adoption of "SPDX-License-Identifier"s, made for <https://bugzilla.tianocore.org/show_bug.cgi?id=1373>. Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Julien Grall <julien.grall@arm.com> Cc: Lars Kurth <lars.kurth@citrix.com> Cc: xen-devel@lists.xenproject.org Bugzilla: https://bugzilla.tianocore.org/show_bug.cgi?id=1654 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
2019-04-10 13:55:19 +02:00
* SPDX-License-Identifier: MIT
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
*
* Tim Deegan and Andrew Warfield November 2004.
*/
#ifndef __XEN_PUBLIC_IO_RING_H__
#define __XEN_PUBLIC_IO_RING_H__
#include "../xen-compat.h"
#if __XEN_INTERFACE_VERSION__ < 0x00030208
#define xen_mb() mb()
#define xen_rmb() rmb()
#define xen_wmb() wmb()
#endif
typedef UINT32 RING_IDX;
/* Round a 32-bit unsigned constant down to the nearest power of two. */
#define __RD2(_x) (((_x) & 0x00000002) ? 0x2 : ((_x) & 0x1))
#define __RD4(_x) (((_x) & 0x0000000c) ? __RD2((_x)>>2)<<2 : __RD2(_x))
#define __RD8(_x) (((_x) & 0x000000f0) ? __RD4((_x)>>4)<<4 : __RD4(_x))
#define __RD16(_x) (((_x) & 0x0000ff00) ? __RD8((_x)>>8)<<8 : __RD8(_x))
#define __RD32(_x) (((_x) & 0xffff0000) ? __RD16((_x)>>16)<<16 : __RD16(_x))
/*
* Calculate size of a shared ring, given the total available space for the
* ring and indexes (_sz), and the name tag of the request/response structure.
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
* A ring contains as many entries as will fit, rounded down to the nearest
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* power of two (so we can mask with (size-1) to loop around).
*/
#define __CONST_RING_SIZE(_s, _sz) \
(__RD32(((_sz) - offsetof(struct _s##_sring, ring)) / \
sizeof(((struct _s##_sring *)0)->ring[0])))
/*
* The same for passing in an actual pointer instead of a name tag.
*/
#define __RING_SIZE(_s, _sz) \
(__RD32(((_sz) - (INTN)(_s)->ring + (INTN)(_s)) / sizeof((_s)->ring[0])))
/*
* Macros to make the correct C datatypes for a new kind of ring.
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* To make a new ring datatype, you need to have two message structures,
* let's say request_t, and response_t already defined.
*
* In a header where you want the ring datatype declared, you then do:
*
* DEFINE_RING_TYPES(mytag, request_t, response_t);
*
* These expand out to give you a set of types, as you can see below.
* The most important of these are:
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* mytag_sring_t - The shared ring.
* mytag_front_ring_t - The 'front' half of the ring.
* mytag_back_ring_t - The 'back' half of the ring.
*
* To initialize a ring in your code you need to know the location and size
* of the shared memory area (PAGE_SIZE, for instance). To initialise
* the front half:
*
* mytag_front_ring_t front_ring;
* SHARED_RING_INIT((mytag_sring_t *)shared_page);
* FRONT_RING_INIT(&front_ring, (mytag_sring_t *)shared_page, PAGE_SIZE);
*
* Initializing the back follows similarly (note that only the front
* initializes the shared ring):
*
* mytag_back_ring_t back_ring;
* BACK_RING_INIT(&back_ring, (mytag_sring_t *)shared_page, PAGE_SIZE);
*/
#define DEFINE_RING_TYPES(__name, __req_t, __rsp_t) \
\
/* Shared ring entry */ \
union __name##_sring_entry { \
__req_t req; \
__rsp_t rsp; \
}; \
\
/* Shared ring page */ \
struct __name##_sring { \
RING_IDX req_prod, req_event; \
RING_IDX rsp_prod, rsp_event; \
union { \
struct { \
UINT8 smartpoll_active; \
} netif; \
struct { \
UINT8 msg; \
} tapif_user; \
UINT8 pvt_pad[4]; \
} private; \
UINT8 __pad[44]; \
union __name##_sring_entry ring[1]; /* variable-length */ \
}; \
\
/* "Front" end's private variables */ \
struct __name##_front_ring { \
RING_IDX req_prod_pvt; \
RING_IDX rsp_cons; \
UINT32 nr_ents; \
struct __name##_sring *sring; \
}; \
\
/* "Back" end's private variables */ \
struct __name##_back_ring { \
RING_IDX rsp_prod_pvt; \
RING_IDX req_cons; \
UINT32 nr_ents; \
struct __name##_sring *sring; \
}; \
\
/* Syntactic sugar */ \
typedef struct __name##_sring __name##_sring_t; \
typedef struct __name##_front_ring __name##_front_ring_t; \
typedef struct __name##_back_ring __name##_back_ring_t
/*
* Macros for manipulating rings.
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
* FRONT_RING_whatever works on the "front end" of a ring: here
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* requests are pushed on to the ring and responses taken off it.
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
* BACK_RING_whatever works on the "back end" of a ring: here
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* requests are taken off the ring and responses put on.
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
* N.B. these macros do NO INTERLOCKS OR FLOW CONTROL.
* This is OK in 1-for-1 request-response situations where the
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* requestor (front end) never has more than RING_SIZE()-1
* outstanding requests.
*/
/* Initialising empty rings */
#define SHARED_RING_INIT(_s) do { \
(_s)->req_prod = (_s)->rsp_prod = 0; \
(_s)->req_event = (_s)->rsp_event = 1; \
(VOID)ZeroMem((_s)->private.pvt_pad, sizeof((_s)->private.pvt_pad)); \
(VOID)ZeroMem((_s)->__pad, sizeof((_s)->__pad)); \
} while(0)
#define FRONT_RING_INIT(_r, _s, __size) do { \
(_r)->req_prod_pvt = 0; \
(_r)->rsp_cons = 0; \
(_r)->nr_ents = __RING_SIZE(_s, __size); \
(_r)->sring = (_s); \
} while (0)
#define BACK_RING_INIT(_r, _s, __size) do { \
(_r)->rsp_prod_pvt = 0; \
(_r)->req_cons = 0; \
(_r)->nr_ents = __RING_SIZE(_s, __size); \
(_r)->sring = (_s); \
} while (0)
/* How big is this ring? */
#define RING_SIZE(_r) \
((_r)->nr_ents)
/* Number of free requests (for use on front side only). */
#define RING_FREE_REQUESTS(_r) \
(RING_SIZE(_r) - ((_r)->req_prod_pvt - (_r)->rsp_cons))
/* Test if there is an empty slot available on the front ring.
* (This is only meaningful from the front. )
*/
#define RING_FULL(_r) \
(RING_FREE_REQUESTS(_r) == 0)
/* Test if there are outstanding messages to be processed on a ring. */
#define RING_HAS_UNCONSUMED_RESPONSES(_r) \
((_r)->sring->rsp_prod - (_r)->rsp_cons)
#ifdef __GNUC__
#define RING_HAS_UNCONSUMED_REQUESTS(_r) ({ \
UINT32 req = (_r)->sring->req_prod - (_r)->req_cons; \
UINT32 rsp = RING_SIZE(_r) - \
((_r)->req_cons - (_r)->rsp_prod_pvt); \
req < rsp ? req : rsp; \
})
#else
/* Same as above, but without the nice GCC ({ ... }) syntax. */
#define RING_HAS_UNCONSUMED_REQUESTS(_r) \
((((_r)->sring->req_prod - (_r)->req_cons) < \
(RING_SIZE(_r) - ((_r)->req_cons - (_r)->rsp_prod_pvt))) ? \
((_r)->sring->req_prod - (_r)->req_cons) : \
(RING_SIZE(_r) - ((_r)->req_cons - (_r)->rsp_prod_pvt)))
#endif
/* Direct access to individual ring elements, by index. */
#define RING_GET_REQUEST(_r, _idx) \
(&((_r)->sring->ring[((_idx) & (RING_SIZE(_r) - 1))].req))
#define RING_GET_RESPONSE(_r, _idx) \
(&((_r)->sring->ring[((_idx) & (RING_SIZE(_r) - 1))].rsp))
/* Loop termination condition: Would the specified index overflow the ring? */
#define RING_REQUEST_CONS_OVERFLOW(_r, _cons) \
(((_cons) - (_r)->rsp_prod_pvt) >= RING_SIZE(_r))
/* Ill-behaved frontend determination: Can there be this many requests? */
#define RING_REQUEST_PROD_OVERFLOW(_r, _prod) \
(((_prod) - (_r)->rsp_prod_pvt) > RING_SIZE(_r))
#define RING_PUSH_REQUESTS(_r) do { \
xen_wmb(); /* back sees requests /before/ updated producer index */ \
(_r)->sring->req_prod = (_r)->req_prod_pvt; \
} while (0)
#define RING_PUSH_RESPONSES(_r) do { \
xen_wmb(); /* front sees resps /before/ updated producer index */ \
(_r)->sring->rsp_prod = (_r)->rsp_prod_pvt; \
} while (0)
/*
* Notification hold-off (req_event and rsp_event):
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* When queueing requests or responses on a shared ring, it may not always be
* necessary to notify the remote end. For example, if requests are in flight
* in a backend, the front may be able to queue further requests without
* notifying the back (if the back checks for new requests when it queues
* responses).
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* When enqueuing requests or responses:
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* Use RING_PUSH_{REQUESTS,RESPONSES}_AND_CHECK_NOTIFY(). The second argument
* is a boolean return value. True indicates that the receiver requires an
* asynchronous notification.
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* After dequeuing requests or responses (before sleeping the connection):
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* Use RING_FINAL_CHECK_FOR_REQUESTS() or RING_FINAL_CHECK_FOR_RESPONSES().
* The second argument is a boolean return value. True indicates that there
* are pending messages on the ring (i.e., the connection should not be put
* to sleep).
OvmfPkg: strip trailing whitespace Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Anthony Perard <anthony.perard@citrix.com> Cc: Julien Grall <julien.grall@arm.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
2019-09-19 14:05:00 +02:00
*
OvmfPkg: Add public headers from Xen Project. This patch imports publics headers in order to use features from Xen like XenStore, PV Block... There is only the necessary header files and there are only a few modifications in order to facilitate future merge of more recent header (that would be necessary to access new features). There is little modification compared to the original files: - Removed most of the unused part of the headers - Use of ZeroMem() instead of memset() - using #pragma pack(4) for IA32 compilation. - Replace types to be more UEFI compliant using a script. OVMF, when built for IA32 arch, uses the gcc switch -malign-double. This change the alignment of fields in some struct compare to what is espected by Xen and any backends. To fix the alignment, the #pragma pack(4) directive is used around the struct that need it. Command to run to change types: find OvmfPkg/Include/IndustryStandard/Xen -type f -name '*.h' -exec sed --regexp-extended --file=fix_type_in_xen_includes.sed --in-place {} \; Avoid changing the 'long' that is not a type (with the first line). $ cat fix_type_in_xen_includes.sed /as long as/b s/([^a-zA-Z0-9_]|^)uint8_t([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)uint16_t([^a-zA-Z0-9_]|$)/\1UINT16\2/g s/([^a-zA-Z0-9_]|^)uint32_t([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)uint64_t([^a-zA-Z0-9_]|$)/\1UINT64\2/g s/([^a-zA-Z0-9_]|^)int8_t([^a-zA-Z0-9_]|$)/\1INT8\2/g s/([^a-zA-Z0-9_]|^)int16_t([^a-zA-Z0-9_]|$)/\1INT16\2/g s/([^a-zA-Z0-9_]|^)int32_t([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)int64_t([^a-zA-Z0-9_]|$)/\1INT64\2/g s/([^a-zA-Z0-9_]|^)void([^a-zA-Z0-9_]|$)/\1VOID\2/g s/([^a-zA-Z0-9_]|^)unsigned int([^a-zA-Z0-9_]|$)/\1UINT32\2/g s/([^a-zA-Z0-9_]|^)int([^a-zA-Z0-9_]|$)/\1INT32\2/g s/([^a-zA-Z0-9_]|^)unsigned char([^a-zA-Z0-9_]|$)/\1UINT8\2/g s/([^a-zA-Z0-9_]|^)char([^a-zA-Z0-9_]|$)/\1CHAR8\2/g s/([^a-zA-Z0-9_]|^)unsigned long([^a-zA-Z0-9_]|$)/\1UINTN\2/g s/([^a-zA-Z0-9_]|^)long([^a-zA-Z0-9_]|$)/\1INTN\2/g Change in V4: - Add a README in Xen headers directory to explain what have been done to it. It is mostly a copy/past from the commit description with some rewording. - replace unsigned char by UINT8 as there is no unsigned char in UEFI types. Change in V3: - Remove unused header sched.h - moving xs_wire.h in a later patch, where it's first needed - moving io/blkif.h in a later patch (XenPvBlkDxe: Add BlockFront client) - moving event_channel.h in a later patch (XenBusDxe: Add Event Channel Notify) - using #pragma pack(4) for IA32 - headers trimed down, removed most of the unused struct/define/... License: This patch adds many files under the MIT licence. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Acked-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16257 6f19259b-4bc3-4df7-8a09-765794883524
2014-10-29 07:48:29 +01:00
* These macros will set the req_event/rsp_event field to trigger a
* notification on the very next message that is enqueued. If you want to
* create batches of work (i.e., only receive a notification after several
* messages have been enqueued) then you will need to create a customised
* version of the FINAL_CHECK macro in your own code, which sets the event
* field appropriately.
*/
#define RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(_r, _notify) do { \
RING_IDX __old = (_r)->sring->req_prod; \
RING_IDX __new = (_r)->req_prod_pvt; \
xen_wmb(); /* back sees requests /before/ updated producer index */ \
(_r)->sring->req_prod = __new; \
xen_mb(); /* back sees new requests /before/ we check req_event */ \
(_notify) = ((RING_IDX)(__new - (_r)->sring->req_event) < \
(RING_IDX)(__new - __old)); \
} while (0)
#define RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(_r, _notify) do { \
RING_IDX __old = (_r)->sring->rsp_prod; \
RING_IDX __new = (_r)->rsp_prod_pvt; \
xen_wmb(); /* front sees resps /before/ updated producer index */ \
(_r)->sring->rsp_prod = __new; \
xen_mb(); /* front sees new resps /before/ we check rsp_event */ \
(_notify) = ((RING_IDX)(__new - (_r)->sring->rsp_event) < \
(RING_IDX)(__new - __old)); \
} while (0)
#define RING_FINAL_CHECK_FOR_REQUESTS(_r, _work_to_do) do { \
(_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r); \
if (_work_to_do) break; \
(_r)->sring->req_event = (_r)->req_cons + 1; \
xen_mb(); \
(_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r); \
} while (0)
#define RING_FINAL_CHECK_FOR_RESPONSES(_r, _work_to_do) do { \
(_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r); \
if (_work_to_do) break; \
(_r)->sring->rsp_event = (_r)->rsp_cons + 1; \
xen_mb(); \
(_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r); \
} while (0)
#endif /* __XEN_PUBLIC_IO_RING_H__ */
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/