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path: root/src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/SnpInitialize.c
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diff --git a/src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/SnpInitialize.c b/src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/SnpInitialize.c
new file mode 100644
index 00000000..1fec91b4
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/VBoxPkg/E1kNetDxe/SnpInitialize.c
@@ -0,0 +1,321 @@
+/** @file
+
+ Implementation of the SNP.Initialize() function and its private helpers if
+ any.
+
+ Copyright (c) 2021, Oracle and/or its affiliates.
+ Copyright (c) 2017, AMD Inc, All rights reserved.
+ Copyright (C) 2013, Red Hat, Inc.
+ Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+#include "E1kNet.h"
+
+/**
+ Set up static scaffolding for the E1kNetTransmit() and
+ E1kNetGetStatus() SNP methods.
+
+ This function may only be called by E1kNetInitialize().
+
+ @param[in,out] Dev The E1K_NET_DEV driver instance about to enter the
+ EfiSimpleNetworkInitialized state.
+
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate the stack to track the heads
+ of free descriptor chains or failed to init
+ TxBufCollection.
+ @return Status codes from VIRTIO_DEVICE_PROTOCOL.
+ AllocateSharedPages() or
+ VirtioMapAllBytesInSharedBuffer()
+ @retval EFI_SUCCESS TX setup successful.
+*/
+
+STATIC
+EFI_STATUS
+EFIAPI
+E1kNetInitTx (
+ IN OUT E1K_NET_DEV *Dev
+ )
+{
+ UINTN TxRingSize;
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS DeviceAddress;
+ VOID *TxRingBuffer;
+
+ Dev->TxMaxPending = E1K_NET_MAX_PENDING;
+ Dev->TxCurPending = 0;
+ Dev->TxBufCollection = OrderedCollectionInit (
+ E1kNetTxBufMapInfoCompare,
+ E1kNetTxBufDeviceAddressCompare
+ );
+ if (Dev->TxBufCollection == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
+
+ //
+ // Allocate TxRing header and map with BusMasterCommonBuffer so that it
+ // can be accessed equally by both processor and device.
+ //
+ TxRingSize = Dev->TxMaxPending * sizeof (*Dev->TxRing);
+ Status = Dev->PciIo->AllocateBuffer (
+ Dev->PciIo,
+ AllocateAnyPages,
+ EfiBootServicesData,
+ EFI_SIZE_TO_PAGES (TxRingSize),
+ &TxRingBuffer,
+ EFI_PCI_ATTRIBUTE_MEMORY_CACHED
+ );
+ if (EFI_ERROR (Status)) {
+ goto UninitTxBufCollection;
+ }
+
+ ZeroMem (TxRingBuffer, TxRingSize);
+
+ Status = Dev->PciIo->Map (
+ Dev->PciIo,
+ EfiPciIoOperationBusMasterCommonBuffer,
+ TxRingBuffer,
+ &TxRingSize,
+ &DeviceAddress,
+ &Dev->TxRingMap
+ );
+ if (EFI_ERROR (Status)) {
+ goto FreeTxRingBuffer;
+ }
+
+ Dev->TxRing = TxRingBuffer;
+ Dev->TdhLastSeen = 0;
+ Dev->TxLastUsed = 0;
+
+ // Program the transmit engine.
+ MemoryFence ();
+ E1kNetRegWrite32(Dev, E1K_REG_TDBAL, (UINT32)DeviceAddress);
+ E1kNetRegWrite32(Dev, E1K_REG_TDBAH, (UINT32)(RShiftU64 (DeviceAddress, 32)));
+ E1kNetRegWrite32(Dev, E1K_REG_TDLEN, (UINT32)TxRingSize);
+ E1kNetRegWrite32(Dev, E1K_REG_TDH, 0);
+ E1kNetRegWrite32(Dev, E1K_REG_TDT, 0);
+ E1kNetRegWrite32(Dev, E1K_REG_TCTL, E1K_REG_TCTL_EN | E1K_REG_TCTL_PSP);
+
+ return EFI_SUCCESS;
+
+FreeTxRingBuffer:
+ Dev->PciIo->FreeBuffer (
+ Dev->PciIo,
+ EFI_SIZE_TO_PAGES (TxRingSize),
+ TxRingBuffer
+ );
+
+UninitTxBufCollection:
+ OrderedCollectionUninit (Dev->TxBufCollection);
+
+Exit:
+ return Status;
+}
+
+
+/**
+ Set up static scaffolding for the E1kNetReceive() SNP method and enable
+ live device operation.
+
+ This function may only be called as E1kNetInitialize()'s final step.
+
+ @param[in,out] Dev The E1K_NET_DEV driver instance about to enter the
+ EfiSimpleNetworkInitialized state.
+
+ @return Status codes from VIRTIO_CFG_WRITE() or
+ VIRTIO_DEVICE_PROTOCOL.AllocateSharedPages or
+ VirtioMapAllBytesInSharedBuffer().
+ @retval EFI_SUCCESS RX setup successful. The device is live and may
+ already be writing to the receive area.
+*/
+
+STATIC
+EFI_STATUS
+EFIAPI
+E1kNetInitRx (
+ IN OUT E1K_NET_DEV *Dev
+ )
+{
+ EFI_STATUS Status;
+ UINTN RxBufSize;
+ UINTN PktIdx;
+ UINTN NumBytes;
+ EFI_PHYSICAL_ADDRESS RxBufDeviceAddress;
+ VOID *RxBuffer;
+
+ //
+ // For each incoming packet we must supply two buffers:
+ // - the recipient for the RX descriptor, plus
+ // - the recipient for the network data (which consists of Ethernet header
+ // and Ethernet payload) which is a 2KB buffer.
+ //
+ RxBufSize = sizeof(*Dev->RxRing) + 2048;
+
+ //
+ // The RxBuf is shared between guest and hypervisor, use
+ // AllocateSharedPages() to allocate this memory region and map it with
+ // BusMasterCommonBuffer so that it can be accessed by both guest and
+ // hypervisor.
+ //
+ NumBytes = E1K_NET_MAX_PENDING * RxBufSize;
+ Dev->RxBufNrPages = EFI_SIZE_TO_PAGES (NumBytes);
+ Status = Dev->PciIo->AllocateBuffer (
+ Dev->PciIo,
+ AllocateAnyPages,
+ EfiBootServicesData,
+ Dev->RxBufNrPages,
+ &RxBuffer,
+ EFI_PCI_ATTRIBUTE_MEMORY_CACHED
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ ZeroMem (RxBuffer, NumBytes);
+
+ Status = Dev->PciIo->Map (
+ Dev->PciIo,
+ EfiPciIoOperationBusMasterCommonBuffer,
+ RxBuffer,
+ &NumBytes,
+ &Dev->RxDeviceBase,
+ &Dev->RxMap
+ );
+ if (EFI_ERROR (Status)) {
+ goto FreeSharedBuffer;
+ }
+
+ Dev->RxRing = RxBuffer;
+ Dev->RxBuf = (UINT8 *)RxBuffer + sizeof(*Dev->RxRing) * E1K_NET_MAX_PENDING;
+ Dev->RdhLastSeen = 0;
+
+ // Set up the RX descriptors.
+ Dev->RxBufDeviceBase = Dev->RxDeviceBase + sizeof(*Dev->RxRing) * E1K_NET_MAX_PENDING;
+ RxBufDeviceAddress = Dev->RxBufDeviceBase;
+ for (PktIdx = 0; PktIdx < E1K_NET_MAX_PENDING; ++PktIdx) {
+ Dev->RxRing[PktIdx].AddrBufferLow = (UINT32)RxBufDeviceAddress;
+ Dev->RxRing[PktIdx].AddrBufferHigh = (UINT32)RShiftU64(RxBufDeviceAddress, 32);
+ Dev->RxRing[PktIdx].BufferLength = 2048;
+
+ RxBufDeviceAddress += Dev->RxRing[PktIdx].BufferLength;
+ }
+
+ // Program the receive engine.
+ MemoryFence ();
+ E1kNetRegWrite32(Dev, E1K_REG_RDBAL, (UINT32)Dev->RxDeviceBase);
+ E1kNetRegWrite32(Dev, E1K_REG_RDBAH, (UINT32)(RShiftU64 (Dev->RxDeviceBase, 32)));
+ E1kNetRegWrite32(Dev, E1K_REG_RDLEN, sizeof(*Dev->RxRing) * E1K_NET_MAX_PENDING);
+ E1kNetRegWrite32(Dev, E1K_REG_RDH, 0);
+ E1kNetRegWrite32(Dev, E1K_REG_RDT, E1K_NET_MAX_PENDING - 1);
+ E1kNetRegClear32(Dev, E1K_REG_RCTL, E1K_REG_RCTL_BSIZE_MASK);
+ E1kNetRegSet32(Dev, E1K_REG_RCTL, E1K_REG_RCTL_EN | E1K_REG_RCTL_MPE);
+
+ return EFI_SUCCESS;
+
+FreeSharedBuffer:
+ Dev->PciIo->FreeBuffer (
+ Dev->PciIo,
+ Dev->RxBufNrPages,
+ RxBuffer
+ );
+ return Status;
+}
+
+/**
+ Resets a network adapter and allocates the transmit and receive buffers
+ required by the network interface; optionally, also requests allocation of
+ additional transmit and receive buffers.
+
+ @param This The protocol instance pointer.
+ @param ExtraRxBufferSize The size, in bytes, of the extra receive buffer
+ space that the driver should allocate for the
+ network interface. Some network interfaces will not
+ be able to use the extra buffer, and the caller
+ will not know if it is actually being used.
+ @param ExtraTxBufferSize The size, in bytes, of the extra transmit buffer
+ space that the driver should allocate for the
+ network interface. Some network interfaces will not
+ be able to use the extra buffer, and the caller
+ will not know if it is actually being used.
+
+ @retval EFI_SUCCESS The network interface was initialized.
+ @retval EFI_NOT_STARTED The network interface has not been started.
+ @retval EFI_OUT_OF_RESOURCES There was not enough memory for the transmit
+ and receive buffers.
+ @retval EFI_INVALID_PARAMETER One or more of the parameters has an
+ unsupported value.
+ @retval EFI_DEVICE_ERROR The command could not be sent to the network
+ interface.
+ @retval EFI_UNSUPPORTED This function is not supported by the network
+ interface.
+
+**/
+
+EFI_STATUS
+EFIAPI
+E1kNetInitialize (
+ IN EFI_SIMPLE_NETWORK_PROTOCOL *This,
+ IN UINTN ExtraRxBufferSize OPTIONAL,
+ IN UINTN ExtraTxBufferSize OPTIONAL
+ )
+{
+ E1K_NET_DEV *Dev;
+ EFI_TPL OldTpl;
+ EFI_STATUS Status;
+
+ DEBUG((DEBUG_INFO, "E1kNetInitialize:\n"));
+
+ if (This == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ if (ExtraRxBufferSize > 0 || ExtraTxBufferSize > 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ Dev = E1K_NET_FROM_SNP (This);
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+ if (Dev->Snm.State != EfiSimpleNetworkStarted) {
+ Status = EFI_NOT_STARTED;
+ goto InitFailed;
+ }
+
+ // Program the first Receive Address Low/High register.
+ E1kNetRegSet32(Dev, E1K_REG_CTRL, E1K_REG_CTRL_ASDE | E1K_REG_CTRL_SLU);
+ E1kNetRegWrite32(Dev, E1K_REG_RAL, *(UINT32 *)&Dev->Snm.CurrentAddress.Addr[0]);
+ E1kNetRegWrite32(Dev, E1K_REG_RAH, (*(UINT32 *)&Dev->Snm.CurrentAddress.Addr[4]) | E1K_REG_RAH_AV);
+
+ Status = E1kNetInitTx (Dev);
+ if (EFI_ERROR (Status)) {
+ goto AbortDevice;
+ }
+
+ //
+ // start receiving
+ //
+ Status = E1kNetInitRx (Dev);
+ if (EFI_ERROR (Status)) {
+ goto ReleaseTxAux;
+ }
+
+ Dev->Snm.State = EfiSimpleNetworkInitialized;
+ gBS->RestoreTPL (OldTpl);
+ return EFI_SUCCESS;
+
+ReleaseTxAux:
+ E1kNetShutdownTx (Dev);
+
+AbortDevice:
+ E1kNetDevReset(Dev);
+
+InitFailed:
+ gBS->RestoreTPL (OldTpl);
+ return Status;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 17:42:23 +0000