862 lines
24 KiB
C
862 lines
24 KiB
C
/** @file
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Implementation of driver entry point and driver binding protocol.
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Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "Snp.h"
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/**
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One notified function to stop UNDI device when gBS->ExitBootServices() called.
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@param Event Pointer to this event
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@param Context Event handler private data
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**/
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VOID
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EFIAPI
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SnpNotifyExitBootServices (
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EFI_EVENT Event,
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VOID *Context
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)
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{
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SNP_DRIVER *Snp;
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Snp = (SNP_DRIVER *)Context;
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//
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// Shutdown and stop UNDI driver
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//
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PxeShutdown (Snp);
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PxeStop (Snp);
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}
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/**
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Send command to UNDI. It does nothing currently.
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@param Cdb command to be sent to UNDI.
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@retval EFI_INVALID_PARAMETER The command is 0.
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@retval EFI_UNSUPPORTED Default return status because it's not
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supported currently.
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**/
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EFI_STATUS
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EFIAPI
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IssueHwUndiCommand (
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UINT64 Cdb
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)
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{
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DEBUG ((EFI_D_ERROR, "\nIssueHwUndiCommand() - This should not be called!"));
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if (Cdb == 0) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// %%TBD - For now, nothing is done.
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//
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return EFI_UNSUPPORTED;
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}
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/**
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Compute 8-bit checksum of a buffer.
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@param Buffer Pointer to buffer.
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@param Length Length of buffer in bytes.
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@return 8-bit checksum of all bytes in buffer, or zero if ptr is NULL or len
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is zero.
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**/
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UINT8
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Calc8BitCksum (
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VOID *Buffer,
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UINTN Length
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)
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{
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UINT8 *Ptr;
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UINT8 Cksum;
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Ptr = Buffer;
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Cksum = 0;
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if (Ptr == NULL || Length == 0) {
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return 0;
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}
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while (Length-- != 0) {
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Cksum = (UINT8) (Cksum + *Ptr++);
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}
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return Cksum;
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}
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/**
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Test to see if this driver supports ControllerHandle. This service
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is called by the EFI boot service ConnectController(). In
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order to make drivers as small as possible, there are a few calling
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restrictions for this service. ConnectController() must
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follow these calling restrictions. If any other agent wishes to call
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Supported() it must also follow these calling restrictions.
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@param This Protocol instance pointer.
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@param ControllerHandle Handle of device to test.
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@param RemainingDevicePath Optional parameter use to pick a specific child
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device to start.
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@retval EFI_SUCCESS This driver supports this device.
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@retval EFI_ALREADY_STARTED This driver is already running on this device.
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@retval other This driver does not support this device.
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**/
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EFI_STATUS
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EFIAPI
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SimpleNetworkDriverSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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{
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EFI_STATUS Status;
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EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL *NiiProtocol;
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PXE_UNDI *Pxe;
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiDevicePathProtocolGuid,
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NULL,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_TEST_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiNetworkInterfaceIdentifierProtocolGuid_31,
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(VOID **) &NiiProtocol,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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if (Status == EFI_ALREADY_STARTED) {
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DEBUG ((EFI_D_INFO, "Support(): Already Started. on handle %p\n", Controller));
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}
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return Status;
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}
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DEBUG ((EFI_D_INFO, "Support(): UNDI3.1 found on handle %p\n", Controller));
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//
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// check the version, we don't want to connect to the undi16
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//
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if (NiiProtocol->Type != EfiNetworkInterfaceUndi) {
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Status = EFI_UNSUPPORTED;
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goto Done;
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}
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//
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// Check to see if !PXE structure is valid. Paragraph alignment of !PXE structure is required.
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//
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if ((NiiProtocol->Id & 0x0F) != 0) {
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DEBUG ((EFI_D_NET, "\n!PXE structure is not paragraph aligned.\n"));
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Status = EFI_UNSUPPORTED;
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goto Done;
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}
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Pxe = (PXE_UNDI *) (UINTN) (NiiProtocol->Id);
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//
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// Verify !PXE revisions.
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//
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if (Pxe->hw.Signature != PXE_ROMID_SIGNATURE) {
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DEBUG ((EFI_D_NET, "\n!PXE signature is not valid.\n"));
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Status = EFI_UNSUPPORTED;
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goto Done;
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}
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if (Pxe->hw.Rev < PXE_ROMID_REV) {
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DEBUG ((EFI_D_NET, "\n!PXE.Rev is not supported.\n"));
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Status = EFI_UNSUPPORTED;
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goto Done;
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}
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if (Pxe->hw.MajorVer < PXE_ROMID_MAJORVER) {
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DEBUG ((EFI_D_NET, "\n!PXE.MajorVer is not supported.\n"));
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Status = EFI_UNSUPPORTED;
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goto Done;
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} else if (Pxe->hw.MajorVer == PXE_ROMID_MAJORVER && Pxe->hw.MinorVer < PXE_ROMID_MINORVER) {
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DEBUG ((EFI_D_NET, "\n!PXE.MinorVer is not supported."));
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Status = EFI_UNSUPPORTED;
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goto Done;
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}
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//
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// Do S/W UNDI specific checks.
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//
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if ((Pxe->hw.Implementation & PXE_ROMID_IMP_HW_UNDI) == 0) {
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if (Pxe->sw.EntryPoint < Pxe->sw.Len) {
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DEBUG ((EFI_D_NET, "\n!PXE S/W entry point is not valid."));
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Status = EFI_UNSUPPORTED;
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goto Done;
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}
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if (Pxe->sw.BusCnt == 0) {
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DEBUG ((EFI_D_NET, "\n!PXE.BusCnt is zero."));
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Status = EFI_UNSUPPORTED;
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goto Done;
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}
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}
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Status = EFI_SUCCESS;
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DEBUG ((EFI_D_INFO, "Support(): supported on %p\n", Controller));
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Done:
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gBS->CloseProtocol (
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Controller,
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&gEfiNetworkInterfaceIdentifierProtocolGuid_31,
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This->DriverBindingHandle,
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Controller
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);
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return Status;
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}
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/**
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Start this driver on ControllerHandle. This service is called by the
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EFI boot service ConnectController(). In order to make
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drivers as small as possible, there are a few calling restrictions for
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this service. ConnectController() must follow these
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calling restrictions. If any other agent wishes to call Start() it
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must also follow these calling restrictions.
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@param This Protocol instance pointer.
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@param ControllerHandle Handle of device to bind driver to.
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@param RemainingDevicePath Optional parameter use to pick a specific child
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device to start.
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@retval EFI_SUCCESS This driver is added to ControllerHandle
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@retval EFI_DEVICE_ERROR This driver could not be started due to a device error
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@retval other This driver does not support this device
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**/
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EFI_STATUS
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EFIAPI
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SimpleNetworkDriverStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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)
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{
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EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL *Nii;
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EFI_DEVICE_PATH_PROTOCOL *NiiDevicePath;
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EFI_STATUS Status;
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PXE_UNDI *Pxe;
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SNP_DRIVER *Snp;
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VOID *Address;
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EFI_HANDLE Handle;
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UINT8 BarIndex;
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PXE_STATFLAGS InitStatFlags;
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EFI_PCI_IO_PROTOCOL *PciIo;
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EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *BarDesc;
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BOOLEAN FoundIoBar;
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BOOLEAN FoundMemoryBar;
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DEBUG ((EFI_D_NET, "\nSnpNotifyNetworkInterfaceIdentifier() "));
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiDevicePathProtocolGuid,
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(VOID **) &NiiDevicePath,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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Status = gBS->LocateDevicePath (
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&gEfiPciIoProtocolGuid,
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&NiiDevicePath,
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&Handle
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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Status = gBS->OpenProtocol (
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Handle,
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&gEfiPciIoProtocolGuid,
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(VOID **) &PciIo,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Get the NII interface.
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//
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Status = gBS->OpenProtocol (
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Controller,
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&gEfiNetworkInterfaceIdentifierProtocolGuid_31,
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(VOID **) &Nii,
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This->DriverBindingHandle,
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Controller,
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EFI_OPEN_PROTOCOL_BY_DRIVER
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);
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if (EFI_ERROR (Status)) {
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gBS->CloseProtocol (
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Controller,
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&gEfiDevicePathProtocolGuid,
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This->DriverBindingHandle,
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Controller
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);
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return Status;
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}
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DEBUG ((EFI_D_INFO, "Start(): UNDI3.1 found\n"));
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Pxe = (PXE_UNDI *) (UINTN) (Nii->Id);
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if (Calc8BitCksum (Pxe, Pxe->hw.Len) != 0) {
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DEBUG ((EFI_D_NET, "\n!PXE checksum is not correct.\n"));
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goto NiiError;
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}
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if ((Pxe->hw.Implementation & PXE_ROMID_IMP_PROMISCUOUS_RX_SUPPORTED) != 0) {
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//
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// We can get any packets.
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//
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} else if ((Pxe->hw.Implementation & PXE_ROMID_IMP_BROADCAST_RX_SUPPORTED) != 0) {
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//
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// We need to be able to get broadcast packets for DHCP.
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// If we do not have promiscuous support, we must at least have
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// broadcast support or we cannot do DHCP!
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//
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} else {
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DEBUG ((EFI_D_NET, "\nUNDI does not have promiscuous or broadcast support."));
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goto NiiError;
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}
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//
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// OK, we like this UNDI, and we know snp is not already there on this handle
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// Allocate and initialize a new simple network protocol structure.
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//
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Status = PciIo->AllocateBuffer (
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PciIo,
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AllocateAnyPages,
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EfiBootServicesData,
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SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
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&Address,
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0
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);
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if (Status != EFI_SUCCESS) {
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DEBUG ((EFI_D_NET, "\nCould not allocate SNP_DRIVER structure.\n"));
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goto NiiError;
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}
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Snp = (SNP_DRIVER *) (UINTN) Address;
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ZeroMem (Snp, sizeof (SNP_DRIVER));
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Snp->PciIo = PciIo;
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Snp->Signature = SNP_DRIVER_SIGNATURE;
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EfiInitializeLock (&Snp->Lock, TPL_NOTIFY);
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Snp->Snp.Revision = EFI_SIMPLE_NETWORK_PROTOCOL_REVISION;
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Snp->Snp.Start = SnpUndi32Start;
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Snp->Snp.Stop = SnpUndi32Stop;
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Snp->Snp.Initialize = SnpUndi32Initialize;
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Snp->Snp.Reset = SnpUndi32Reset;
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Snp->Snp.Shutdown = SnpUndi32Shutdown;
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Snp->Snp.ReceiveFilters = SnpUndi32ReceiveFilters;
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Snp->Snp.StationAddress = SnpUndi32StationAddress;
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Snp->Snp.Statistics = SnpUndi32Statistics;
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Snp->Snp.MCastIpToMac = SnpUndi32McastIpToMac;
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Snp->Snp.NvData = SnpUndi32NvData;
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Snp->Snp.GetStatus = SnpUndi32GetStatus;
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Snp->Snp.Transmit = SnpUndi32Transmit;
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Snp->Snp.Receive = SnpUndi32Receive;
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Snp->Snp.WaitForPacket = NULL;
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Snp->Snp.Mode = &Snp->Mode;
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Snp->TxRxBufferSize = 0;
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Snp->TxRxBuffer = NULL;
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Snp->RecycledTxBuf = AllocatePool (sizeof (UINT64) * SNP_TX_BUFFER_INCREASEMENT);
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if (Snp->RecycledTxBuf == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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goto Error_DeleteSNP;
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}
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Snp->MaxRecycledTxBuf = SNP_TX_BUFFER_INCREASEMENT;
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Snp->RecycledTxBufCount = 0;
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if (Nii->Revision >= EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL_REVISION) {
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Snp->IfNum = Nii->IfNum;
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} else {
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Snp->IfNum = (UINT8) (Nii->IfNum & 0xFF);
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}
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if ((Pxe->hw.Implementation & PXE_ROMID_IMP_HW_UNDI) != 0) {
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Snp->IsSwUndi = FALSE;
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Snp->IssueUndi32Command = &IssueHwUndiCommand;
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} else {
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Snp->IsSwUndi = TRUE;
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if ((Pxe->sw.Implementation & PXE_ROMID_IMP_SW_VIRT_ADDR) != 0) {
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Snp->IssueUndi32Command = (ISSUE_UNDI32_COMMAND) (UINTN) Pxe->sw.EntryPoint;
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} else {
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Snp->IssueUndi32Command = (ISSUE_UNDI32_COMMAND) (UINTN) ((UINT8) (UINTN) Pxe + Pxe->sw.EntryPoint);
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}
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}
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//
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// Allocate a global CPB and DB buffer for this UNDI interface.
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// we do this because:
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//
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// -UNDI 3.0 wants all the addresses passed to it (even the cpb and db) to be
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// within 2GB limit, create them here and map them so that when undi calls
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// v2p callback to check if the physical address is < 2gb, we will pass.
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//
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// -This is not a requirement for 3.1 or later UNDIs but the code looks
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// simpler if we use the same cpb, db variables for both old and new undi
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// interfaces from all the SNP interface calls (we don't map the buffers
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// for the newer undi interfaces though)
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// .
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// -it is OK to allocate one global set of CPB, DB pair for each UNDI
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// interface as EFI does not multi-task and so SNP will not be re-entered!
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//
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Status = PciIo->AllocateBuffer (
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PciIo,
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AllocateAnyPages,
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EfiBootServicesData,
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SNP_MEM_PAGES (4096),
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&Address,
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0
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);
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if (Status != EFI_SUCCESS) {
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DEBUG ((EFI_D_NET, "\nCould not allocate CPB and DB structures.\n"));
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goto Error_DeleteSNP;
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}
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Snp->Cpb = (VOID *) (UINTN) Address;
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Snp->Db = (VOID *) ((UINTN) Address + 2048);
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//
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// Find the correct BAR to do IO.
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//
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// Enumerate through the PCI BARs for the device to determine which one is
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// the IO BAR. Save the index of the BAR into the adapter info structure.
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// for regular 32bit BARs, 0 is memory mapped, 1 is io mapped
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//
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Snp->MemoryBarIndex = 0;
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Snp->IoBarIndex = 1;
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FoundMemoryBar = FALSE;
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FoundIoBar = FALSE;
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for (BarIndex = 0; BarIndex < PCI_MAX_BAR; BarIndex++) {
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Status = PciIo->GetBarAttributes (
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PciIo,
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BarIndex,
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NULL,
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(VOID**) &BarDesc
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);
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if (Status == EFI_UNSUPPORTED) {
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continue;
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} else if (EFI_ERROR (Status)) {
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goto Error_DeleteSNP;
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}
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if ((!FoundMemoryBar) && (BarDesc->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM)) {
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Snp->MemoryBarIndex = BarIndex;
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FoundMemoryBar = TRUE;
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} else if ((!FoundIoBar) && (BarDesc->ResType == ACPI_ADDRESS_SPACE_TYPE_IO)) {
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Snp->IoBarIndex = BarIndex;
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FoundIoBar = TRUE;
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}
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FreePool (BarDesc);
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if (FoundMemoryBar && FoundIoBar) {
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break;
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}
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}
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Status = PxeStart (Snp);
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if (Status != EFI_SUCCESS) {
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goto Error_DeleteSNP;
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}
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Snp->Cdb.OpCode = PXE_OPCODE_GET_INIT_INFO;
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Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED;
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Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
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Snp->Cdb.CPBaddr = PXE_DBADDR_NOT_USED;
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Snp->Cdb.DBsize = (UINT16) sizeof (Snp->InitInfo);
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Snp->Cdb.DBaddr = (UINT64)(UINTN) (&Snp->InitInfo);
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Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;
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Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
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Snp->Cdb.IFnum = Snp->IfNum;
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Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
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DEBUG ((EFI_D_NET, "\nSnp->undi.get_init_info() "));
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(*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
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//
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// Save the INIT Stat Code...
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//
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InitStatFlags = Snp->Cdb.StatFlags;
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|
|
if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
|
|
DEBUG ((EFI_D_NET, "\nSnp->undi.init_info() %xh:%xh\n", Snp->Cdb.StatFlags, Snp->Cdb.StatCode));
|
|
PxeStop (Snp);
|
|
goto Error_DeleteSNP;
|
|
}
|
|
|
|
//
|
|
// Initialize simple network protocol mode structure
|
|
//
|
|
Snp->Mode.State = EfiSimpleNetworkStopped;
|
|
Snp->Mode.HwAddressSize = Snp->InitInfo.HWaddrLen;
|
|
Snp->Mode.MediaHeaderSize = Snp->InitInfo.MediaHeaderLen;
|
|
Snp->Mode.MaxPacketSize = Snp->InitInfo.FrameDataLen;
|
|
Snp->Mode.NvRamAccessSize = Snp->InitInfo.NvWidth;
|
|
Snp->Mode.NvRamSize = Snp->InitInfo.NvCount * Snp->Mode.NvRamAccessSize;
|
|
Snp->Mode.IfType = Snp->InitInfo.IFtype;
|
|
Snp->Mode.MaxMCastFilterCount = Snp->InitInfo.MCastFilterCnt;
|
|
Snp->Mode.MCastFilterCount = 0;
|
|
|
|
switch (InitStatFlags & PXE_STATFLAGS_CABLE_DETECT_MASK) {
|
|
case PXE_STATFLAGS_CABLE_DETECT_SUPPORTED:
|
|
Snp->CableDetectSupported = TRUE;
|
|
break;
|
|
|
|
case PXE_STATFLAGS_CABLE_DETECT_NOT_SUPPORTED:
|
|
default:
|
|
Snp->CableDetectSupported = FALSE;
|
|
}
|
|
|
|
switch (InitStatFlags & PXE_STATFLAGS_GET_STATUS_NO_MEDIA_MASK) {
|
|
case PXE_STATFLAGS_GET_STATUS_NO_MEDIA_SUPPORTED:
|
|
Snp->MediaStatusSupported = TRUE;
|
|
break;
|
|
|
|
case PXE_STATFLAGS_GET_STATUS_NO_MEDIA_NOT_SUPPORTED:
|
|
default:
|
|
Snp->MediaStatusSupported = FALSE;
|
|
}
|
|
|
|
if (Snp->CableDetectSupported || Snp->MediaStatusSupported) {
|
|
Snp->Mode.MediaPresentSupported = TRUE;
|
|
}
|
|
|
|
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_STATION_ADDR_SETTABLE) != 0) {
|
|
Snp->Mode.MacAddressChangeable = TRUE;
|
|
} else {
|
|
Snp->Mode.MacAddressChangeable = FALSE;
|
|
}
|
|
|
|
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_MULTI_FRAME_SUPPORTED) != 0) {
|
|
Snp->Mode.MultipleTxSupported = TRUE;
|
|
} else {
|
|
Snp->Mode.MultipleTxSupported = FALSE;
|
|
}
|
|
|
|
Snp->Mode.ReceiveFilterMask = EFI_SIMPLE_NETWORK_RECEIVE_UNICAST;
|
|
|
|
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_PROMISCUOUS_MULTICAST_RX_SUPPORTED) != 0) {
|
|
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST;
|
|
|
|
}
|
|
|
|
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_PROMISCUOUS_RX_SUPPORTED) != 0) {
|
|
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS;
|
|
|
|
}
|
|
|
|
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_BROADCAST_RX_SUPPORTED) != 0) {
|
|
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST;
|
|
|
|
}
|
|
|
|
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_FILTERED_MULTICAST_RX_SUPPORTED) != 0) {
|
|
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_MULTICAST;
|
|
|
|
}
|
|
|
|
if ((Pxe->hw.Implementation & PXE_ROMID_IMP_PROMISCUOUS_MULTICAST_RX_SUPPORTED) != 0) {
|
|
Snp->Mode.ReceiveFilterMask |= EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST;
|
|
|
|
}
|
|
|
|
Snp->Mode.ReceiveFilterSetting = 0;
|
|
|
|
//
|
|
// need to get the station address to save in the mode structure. we need to
|
|
// initialize the UNDI first for this.
|
|
//
|
|
Snp->TxRxBufferSize = Snp->InitInfo.MemoryRequired;
|
|
Status = PxeInit (Snp, PXE_OPFLAGS_INITIALIZE_DO_NOT_DETECT_CABLE);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
PxeStop (Snp);
|
|
goto Error_DeleteSNP;
|
|
}
|
|
|
|
Status = PxeGetStnAddr (Snp);
|
|
|
|
if (Status != EFI_SUCCESS) {
|
|
DEBUG ((EFI_D_ERROR, "\nSnp->undi.get_station_addr() failed.\n"));
|
|
PxeShutdown (Snp);
|
|
PxeStop (Snp);
|
|
goto Error_DeleteSNP;
|
|
}
|
|
|
|
Snp->Mode.MediaPresent = FALSE;
|
|
|
|
//
|
|
// We should not leave UNDI started and initialized here. this DriverStart()
|
|
// routine must only find and attach the SNP interface to UNDI layer that it
|
|
// finds on the given handle!
|
|
// The UNDI layer will be started when upper layers call Snp->start.
|
|
// How ever, this DriverStart() must fill up the snp mode structure which
|
|
// contains the MAC address of the NIC. For this reason we started and
|
|
// initialized UNDI here, now we are done, do a shutdown and stop of the
|
|
// UNDI interface!
|
|
//
|
|
PxeShutdown (Snp);
|
|
PxeStop (Snp);
|
|
|
|
//
|
|
// Create EXIT_BOOT_SERIVES Event
|
|
//
|
|
Status = gBS->CreateEventEx (
|
|
EVT_NOTIFY_SIGNAL,
|
|
TPL_NOTIFY,
|
|
SnpNotifyExitBootServices,
|
|
Snp,
|
|
&gEfiEventExitBootServicesGuid,
|
|
&Snp->ExitBootServicesEvent
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
goto Error_DeleteSNP;
|
|
}
|
|
|
|
//
|
|
// add SNP to the undi handle
|
|
//
|
|
Status = gBS->InstallProtocolInterface (
|
|
&Controller,
|
|
&gEfiSimpleNetworkProtocolGuid,
|
|
EFI_NATIVE_INTERFACE,
|
|
&(Snp->Snp)
|
|
);
|
|
|
|
if (!EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
PciIo->FreeBuffer (
|
|
PciIo,
|
|
SNP_MEM_PAGES (4096),
|
|
Snp->Cpb
|
|
);
|
|
|
|
Error_DeleteSNP:
|
|
|
|
if (Snp->RecycledTxBuf != NULL) {
|
|
FreePool (Snp->RecycledTxBuf);
|
|
}
|
|
|
|
PciIo->FreeBuffer (
|
|
PciIo,
|
|
SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
|
|
Snp
|
|
);
|
|
NiiError:
|
|
gBS->CloseProtocol (
|
|
Controller,
|
|
&gEfiNetworkInterfaceIdentifierProtocolGuid_31,
|
|
This->DriverBindingHandle,
|
|
Controller
|
|
);
|
|
|
|
gBS->CloseProtocol (
|
|
Controller,
|
|
&gEfiDevicePathProtocolGuid,
|
|
This->DriverBindingHandle,
|
|
Controller
|
|
);
|
|
|
|
//
|
|
// If we got here that means we are in error state.
|
|
//
|
|
if (!EFI_ERROR (Status)) {
|
|
Status = EFI_DEVICE_ERROR;
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/**
|
|
Stop this driver on ControllerHandle. This service is called by the
|
|
EFI boot service DisconnectController(). In order to
|
|
make drivers as small as possible, there are a few calling
|
|
restrictions for this service. DisconnectController()
|
|
must follow these calling restrictions. If any other agent wishes
|
|
to call Stop() it must also follow these calling restrictions.
|
|
|
|
@param This Protocol instance pointer.
|
|
@param ControllerHandle Handle of device to stop driver on
|
|
@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
|
|
children is zero stop the entire bus driver.
|
|
@param ChildHandleBuffer List of Child Handles to Stop.
|
|
|
|
@retval EFI_SUCCESS This driver is removed ControllerHandle
|
|
@retval other This driver was not removed from this device
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
SimpleNetworkDriverStop (
|
|
IN EFI_DRIVER_BINDING_PROTOCOL *This,
|
|
IN EFI_HANDLE Controller,
|
|
IN UINTN NumberOfChildren,
|
|
IN EFI_HANDLE *ChildHandleBuffer
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_SIMPLE_NETWORK_PROTOCOL *SnpProtocol;
|
|
SNP_DRIVER *Snp;
|
|
EFI_PCI_IO_PROTOCOL *PciIo;
|
|
|
|
//
|
|
// Get our context back.
|
|
//
|
|
Status = gBS->OpenProtocol (
|
|
Controller,
|
|
&gEfiSimpleNetworkProtocolGuid,
|
|
(VOID **) &SnpProtocol,
|
|
This->DriverBindingHandle,
|
|
Controller,
|
|
EFI_OPEN_PROTOCOL_GET_PROTOCOL
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (SnpProtocol);
|
|
|
|
Status = gBS->UninstallProtocolInterface (
|
|
Controller,
|
|
&gEfiSimpleNetworkProtocolGuid,
|
|
&Snp->Snp
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Close EXIT_BOOT_SERIVES Event
|
|
//
|
|
gBS->CloseEvent (Snp->ExitBootServicesEvent);
|
|
|
|
Status = gBS->CloseProtocol (
|
|
Controller,
|
|
&gEfiNetworkInterfaceIdentifierProtocolGuid_31,
|
|
This->DriverBindingHandle,
|
|
Controller
|
|
);
|
|
|
|
Status = gBS->CloseProtocol (
|
|
Controller,
|
|
&gEfiDevicePathProtocolGuid,
|
|
This->DriverBindingHandle,
|
|
Controller
|
|
);
|
|
|
|
PxeShutdown (Snp);
|
|
PxeStop (Snp);
|
|
|
|
FreePool (Snp->RecycledTxBuf);
|
|
|
|
PciIo = Snp->PciIo;
|
|
PciIo->FreeBuffer (
|
|
PciIo,
|
|
SNP_MEM_PAGES (4096),
|
|
Snp->Cpb
|
|
);
|
|
|
|
PciIo->FreeBuffer (
|
|
PciIo,
|
|
SNP_MEM_PAGES (sizeof (SNP_DRIVER)),
|
|
Snp
|
|
);
|
|
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Simple Network Protocol Driver Global Variables
|
|
//
|
|
EFI_DRIVER_BINDING_PROTOCOL gSimpleNetworkDriverBinding = {
|
|
SimpleNetworkDriverSupported,
|
|
SimpleNetworkDriverStart,
|
|
SimpleNetworkDriverStop,
|
|
0xa,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
/**
|
|
The SNP driver entry point.
|
|
|
|
@param ImageHandle The driver image handle.
|
|
@param SystemTable The system table.
|
|
|
|
@retval EFI_SUCEESS Initialization routine has found UNDI hardware,
|
|
loaded it's ROM, and installed a notify event for
|
|
the Network Indentifier Interface Protocol
|
|
successfully.
|
|
@retval Other Return value from HandleProtocol for
|
|
DeviceIoProtocol or LoadedImageProtocol
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
InitializeSnpNiiDriver (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
return EfiLibInstallDriverBindingComponentName2 (
|
|
ImageHandle,
|
|
SystemTable,
|
|
&gSimpleNetworkDriverBinding,
|
|
ImageHandle,
|
|
&gSimpleNetworkComponentName,
|
|
&gSimpleNetworkComponentName2
|
|
);
|
|
}
|