mirror of https://github.com/acidanthera/audk.git
301 lines
9.4 KiB
C
301 lines
9.4 KiB
C
/** @file
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Internal definitions for the virtio-net driver, which produces Simple Network
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Protocol instances for virtio-net devices.
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Copyright (C) 2013, Red Hat, Inc.
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Copyright (c) 2017, AMD Inc, All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _VIRTIO_NET_DXE_H_
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#define _VIRTIO_NET_DXE_H_
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#include <IndustryStandard/VirtioNet.h>
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#include <Library/DebugLib.h>
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#include <Library/VirtioLib.h>
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#include <Protocol/ComponentName.h>
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#include <Protocol/ComponentName2.h>
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#include <Protocol/DevicePath.h>
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#include <Protocol/DriverBinding.h>
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#include <Protocol/SimpleNetwork.h>
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#define VNET_SIG SIGNATURE_32 ('V', 'N', 'E', 'T')
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//
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// maximum number of pending packets, separately for each direction
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//
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#define VNET_MAX_PENDING 64
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//
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// State diagram:
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//
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// | ^
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// | |
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// BindingStart BindingStop
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// +SnpPopulate |
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// ++GetFeatures |
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// | |
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// v |
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// +---------+ virtio-net device is reset, no resources are
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// | stopped | allocated for traffic, but MAC address has
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// +---------+ been retrieved
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// | ^
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// | |
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// SNP.Start SNP.Stop
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// | |
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// v |
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// +---------+
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// | started | functionally identical to stopped
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// +---------+
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// | ^
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// | |
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// SNP.Initialize SNP.Shutdown
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// | |
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// v |
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// +-------------+ Virtio-net setup complete, including DRIVER_OK
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// | initialized | bit. The receive queue is populated with
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// +-------------+ requests; McastIpToMac, GetStatus, Transmit,
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// Receive are callable.
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//
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typedef struct {
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//
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// Parts of this structure are initialized / torn down in various functions
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// at various call depths. The table to the right should make it easier to
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// track them.
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//
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// field init function
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// ------------------ ------------------------------
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UINT32 Signature; // VirtioNetDriverBindingStart
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VIRTIO_DEVICE_PROTOCOL *VirtIo; // VirtioNetDriverBindingStart
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EFI_SIMPLE_NETWORK_PROTOCOL Snp; // VirtioNetSnpPopulate
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EFI_SIMPLE_NETWORK_MODE Snm; // VirtioNetSnpPopulate
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EFI_EVENT ExitBoot; // VirtioNetSnpPopulate
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EFI_DEVICE_PATH_PROTOCOL *MacDevicePath; // VirtioNetDriverBindingStart
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EFI_HANDLE MacHandle; // VirtioNetDriverBindingStart
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VRING RxRing; // VirtioNetInitRing
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VOID *RxRingMap; // VirtioRingMap and
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// VirtioNetInitRing
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UINT8 *RxBuf; // VirtioNetInitRx
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UINT16 RxLastUsed; // VirtioNetInitRx
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UINTN RxBufNrPages; // VirtioNetInitRx
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EFI_PHYSICAL_ADDRESS RxBufDeviceBase; // VirtioNetInitRx
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VOID *RxBufMap; // VirtioNetInitRx
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VRING TxRing; // VirtioNetInitRing
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VOID *TxRingMap; // VirtioRingMap and
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// VirtioNetInitRing
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UINT16 TxMaxPending; // VirtioNetInitTx
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UINT16 TxCurPending; // VirtioNetInitTx
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UINT16 *TxFreeStack; // VirtioNetInitTx
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VIRTIO_1_0_NET_REQ *TxSharedReq; // VirtioNetInitTx
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VOID *TxSharedReqMap; // VirtioNetInitTx
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UINT16 TxLastUsed; // VirtioNetInitTx
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} VNET_DEV;
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//
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// In order to avoid duplication of interface documentation, please find all
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// leading comments near the respective function / variable definitions (not
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// the declarations here), which is where your code editor of choice takes you
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// anyway when jumping to a function.
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//
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//
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// utility macros
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//
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#define VIRTIO_NET_FROM_SNP(SnpPointer) \
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CR (SnpPointer, VNET_DEV, Snp, VNET_SIG)
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#define VIRTIO_CFG_WRITE(Dev, Field, Value) ((Dev)->VirtIo->WriteDevice ( \
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(Dev)->VirtIo, \
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OFFSET_OF_VNET (Field), \
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SIZE_OF_VNET (Field), \
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(Value) \
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))
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#define VIRTIO_CFG_READ(Dev, Field, Pointer) ((Dev)->VirtIo->ReadDevice ( \
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(Dev)->VirtIo, \
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OFFSET_OF_VNET (Field), \
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SIZE_OF_VNET (Field), \
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sizeof *(Pointer), \
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(Pointer) \
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))
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//
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// component naming
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//
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extern EFI_COMPONENT_NAME_PROTOCOL gVirtioNetComponentName;
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extern EFI_COMPONENT_NAME2_PROTOCOL gVirtioNetComponentName2;
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//
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// driver binding
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//
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extern EFI_DRIVER_BINDING_PROTOCOL gVirtioNetDriverBinding;
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//
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// member functions implementing the Simple Network Protocol
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//
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EFI_STATUS
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EFIAPI
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VirtioNetStart (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This
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);
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EFI_STATUS
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EFIAPI
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VirtioNetStop (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This
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);
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EFI_STATUS
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EFIAPI
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VirtioNetInitialize (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN UINTN ExtraRxBufferSize OPTIONAL,
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IN UINTN ExtraTxBufferSize OPTIONAL
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);
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EFI_STATUS
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EFIAPI
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VirtioNetReset (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN BOOLEAN ExtendedVerification
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);
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EFI_STATUS
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EFIAPI
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VirtioNetShutdown (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This
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);
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EFI_STATUS
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EFIAPI
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VirtioNetReceiveFilters (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN UINT32 Enable,
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IN UINT32 Disable,
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IN BOOLEAN ResetMCastFilter,
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IN UINTN MCastFilterCnt OPTIONAL,
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IN EFI_MAC_ADDRESS *MCastFilter OPTIONAL
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);
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EFI_STATUS
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EFIAPI
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VirtioNetStationAddress (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN BOOLEAN Reset,
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IN EFI_MAC_ADDRESS *New OPTIONAL
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);
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EFI_STATUS
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EFIAPI
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VirtioNetStatistics (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN BOOLEAN Reset,
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IN OUT UINTN *StatisticsSize OPTIONAL,
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OUT EFI_NETWORK_STATISTICS *StatisticsTable OPTIONAL
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);
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EFI_STATUS
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EFIAPI
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VirtioNetMcastIpToMac (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN BOOLEAN IPv6,
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IN EFI_IP_ADDRESS *Ip,
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OUT EFI_MAC_ADDRESS *Mac
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);
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EFI_STATUS
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EFIAPI
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VirtioNetNvData (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN BOOLEAN ReadWrite,
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IN UINTN Offset,
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IN UINTN BufferSize,
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IN OUT VOID *Buffer
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);
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EFI_STATUS
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EFIAPI
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VirtioNetGetStatus (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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OUT UINT32 *InterruptStatus OPTIONAL,
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OUT VOID **TxBuf OPTIONAL
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);
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EFI_STATUS
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EFIAPI
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VirtioNetTransmit (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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IN UINTN HeaderSize,
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IN UINTN BufferSize,
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IN /* +OUT! */ VOID *Buffer,
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IN EFI_MAC_ADDRESS *SrcAddr OPTIONAL,
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IN EFI_MAC_ADDRESS *DestAddr OPTIONAL,
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IN UINT16 *Protocol OPTIONAL
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);
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EFI_STATUS
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EFIAPI
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VirtioNetReceive (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
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OUT UINTN *HeaderSize OPTIONAL,
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IN OUT UINTN *BufferSize,
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OUT VOID *Buffer,
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OUT EFI_MAC_ADDRESS *SrcAddr OPTIONAL,
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OUT EFI_MAC_ADDRESS *DestAddr OPTIONAL,
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OUT UINT16 *Protocol OPTIONAL
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);
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//
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// utility functions shared by various SNP member functions
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//
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VOID
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EFIAPI
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VirtioNetShutdownRx (
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IN OUT VNET_DEV *Dev
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);
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VOID
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EFIAPI
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VirtioNetShutdownTx (
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IN OUT VNET_DEV *Dev
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);
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VOID
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EFIAPI
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VirtioNetUninitRing (
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IN OUT VNET_DEV *Dev,
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IN OUT VRING *Ring,
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IN VOID *RingMap
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);
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//
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// event callbacks
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//
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VOID
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EFIAPI
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VirtioNetIsPacketAvailable (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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VOID
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EFIAPI
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VirtioNetExitBoot (
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IN EFI_EVENT Event,
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IN VOID *Context
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);
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#endif // _VIRTIO_NET_DXE_H_
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