[edk2-platforms: PATCH 1/4] Marvel/Drivers: Pp2Dxe: Basic support for Adapter Information Protocol

["Marcin Wojtas" <mw@semihalf.com>]

From: Tomasz Michalec <tm@semihalf.com>

Add implementation of Adapter Information Protocol in Armada 7k8k
PP2 NIC driver. Support retrieving information about media state
which allows to use NetLibDetectMediaWaitTimeout on network interface.
This patch fixes possible hangs when attempting to PXE boot on
unconnected interfaces.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Tomasz Michalec <tm@semihalf.com>
---
 Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.inf |   1 +
 Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.h   |   3 +
 Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.c   | 157 ++++++++++++++++++++
 3 files changed, 161 insertions(+)

diff --git a/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.inf b/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.inf
index be536ab..73aa413 100644
--- a/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.inf
+++ b/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.inf
@@ -64,6 +64,7 @@
   CacheMaintenanceLib
 
 [Protocols]
+  gEfiAdapterInformationProtocolGuid
   gEfiSimpleNetworkProtocolGuid
   gEfiDevicePathProtocolGuid
   gEfiCpuArchProtocolGuid
diff --git a/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.h b/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.h
index b8a5dae..66bd46a 100644
--- a/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.h
+++ b/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.h
@@ -35,6 +35,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef __PP2_DXE_H__
 #define __PP2_DXE_H__
 
+#include <Protocol/AdapterInformation.h>
 #include <Protocol/Cpu.h>
 #include <Protocol/DevicePath.h>
 #include <Protocol/DriverBinding.h>
@@ -59,6 +60,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define MVPP2_MAX_PORT  3
 
 #define PP2DXE_SIGNATURE                    SIGNATURE_32('P', 'P', '2', 'D')
+#define INSTANCE_FROM_AIP(a)                CR((a), PP2DXE_CONTEXT, Aip, PP2DXE_SIGNATURE)
 #define INSTANCE_FROM_SNP(a)                CR((a), PP2DXE_CONTEXT, Snp, PP2DXE_SIGNATURE)
 
 /* OS API */
@@ -365,6 +367,7 @@ typedef struct {
   UINTN                       CompletionQueueTail;
   EFI_EVENT                   EfiExitBootServicesEvent;
   PP2_DEVICE_PATH             *DevicePath;
+  EFI_ADAPTER_INFORMATION_PROTOCOL Aip;
 } PP2DXE_CONTEXT;
 
 /* Inline helpers */
diff --git a/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.c b/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.c
index 02b2798..473a2a1 100644
--- a/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.c
+++ b/Silicon/Marvell/Drivers/Net/Pp2Dxe/Pp2Dxe.c
@@ -1129,6 +1129,7 @@ Pp2DxeSnpInstall (
       &Handle,
       &gEfiSimpleNetworkProtocolGuid, &Pp2Context->Snp,
       &gEfiDevicePathProtocolGuid, Pp2DevicePath,
+      &gEfiAdapterInformationProtocolGuid, &Pp2Context->Aip,
       NULL
       );
 
@@ -1139,6 +1140,157 @@ Pp2DxeSnpInstall (
   return Status;
 }
 
+/**
+  Returns the current state information for the adapter.
+
+  This function returns information of type InformationType from the adapter.
+  If an adapter does not support the requested informational type, then
+  EFI_UNSUPPORTED is returned.
+
+  @param[in]  This                   A pointer to the EFI_ADAPTER_INFORMATION_PROTOCOL instance.
+  @param[in]  InformationType        A pointer to an EFI_GUID that defines the contents of InformationBlock.
+  @param[out] InforamtionBlock       The service returns a pointer to the buffer with the InformationBlock
+                                     structure which contains details about the data specific to InformationType.
+  @param[out] InforamtionBlockSize   The driver returns the size of the InformationBlock in bytes.
+
+  @retval EFI_SUCCESS                The InformationType information was retrieved.
+  @retval EFI_UNSUPPORTED            The InformationType is not known.
+  @retval EFI_DEVICE_ERROR           The device reported an error.
+  @retval EFI_OUT_OF_RESOURCES       The request could not be completed due to a lack of resources.
+  @retval EFI_INVALID_PARAMETER      This is NULL.
+  @retval EFI_INVALID_PARAMETER      InformationBlock is NULL.
+  @retval EFI_INVALID_PARAMETER      InformationBlockSize is NULL.
+
+**/
+EFI_STATUS
+EFIAPI
+Pp2AipGetInformation (
+  IN  EFI_ADAPTER_INFORMATION_PROTOCOL  *This,
+  IN  EFI_GUID                          *InformationType,
+  OUT VOID                              **InformationBlock,
+  OUT UINTN                             *InformationBlockSize
+  )
+{
+  EFI_ADAPTER_INFO_MEDIA_STATE  *AdapterInfo;
+  PP2DXE_CONTEXT                *Pp2Context;
+  EFI_STATUS                     Status;
+
+  if (This == NULL || InformationBlock == NULL || InformationBlockSize == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  if (!CompareGuid (InformationType, &gEfiAdapterInfoMediaStateGuid)) {
+    return EFI_UNSUPPORTED;
+  }
+
+  AdapterInfo = AllocateZeroPool (sizeof (EFI_ADAPTER_INFO_MEDIA_STATE));
+  if (AdapterInfo == NULL) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+
+  *InformationBlock = AdapterInfo;
+  *InformationBlockSize = sizeof (EFI_ADAPTER_INFO_MEDIA_STATE);
+
+  Pp2Context = INSTANCE_FROM_AIP (This);
+
+  Status = Pp2Context->Snp.GetStatus (&(Pp2Context->Snp), NULL, NULL);
+  if (Status == EFI_NOT_READY){
+    AdapterInfo->MediaState = EFI_NOT_READY;
+    return EFI_SUCCESS;
+  }
+
+  AdapterInfo->MediaState = (Pp2Context->Snp.Mode->MediaPresent ?
+                             EFI_SUCCESS : EFI_NOT_READY);
+
+  return EFI_SUCCESS;
+}
+
+/**
+  Sets state information for an adapter.
+
+  This function sends information of type InformationType for an adapter.
+  If an adapter does not support the requested information type, then EFI_UNSUPPORTED
+  is returned.
+
+  @param[in]  This                   A pointer to the EFI_ADAPTER_INFORMATION_PROTOCOL instance.
+  @param[in]  InformationType        A pointer to an EFI_GUID that defines the contents of InformationBlock.
+  @param[in]  InforamtionBlock       A pointer to the InformationBlock structure which contains details
+                                     about the data specific to InformationType.
+  @param[in]  InforamtionBlockSize   The size of the InformationBlock in bytes.
+
+  @retval EFI_SUCCESS                The information was received and interpreted successfully.
+  @retval EFI_UNSUPPORTED            The InformationType is not known.
+  @retval EFI_DEVICE_ERROR           The device reported an error.
+  @retval EFI_INVALID_PARAMETER      This is NULL.
+  @retval EFI_INVALID_PARAMETER      InformationBlock is NULL.
+  @retval EFI_WRITE_PROTECTED        The InformationType cannot be modified using EFI_ADAPTER_INFO_SET_INFO().
+
+**/
+EFI_STATUS
+EFIAPI
+Pp2AipSetInformation (
+  IN  EFI_ADAPTER_INFORMATION_PROTOCOL  *This,
+  IN  EFI_GUID                          *InformationType,
+  IN  VOID                              *InformationBlock,
+  IN  UINTN                             InformationBlockSize
+  )
+{
+  if (This == NULL || InformationBlock == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  if (CompareGuid (InformationType, &gEfiAdapterInfoMediaStateGuid)) {
+    return EFI_WRITE_PROTECTED;
+  }
+
+  return EFI_UNSUPPORTED;
+}
+
+/**
+  Get a list of supported information types for this instance of the protocol.
+
+  This function returns a list of InformationType GUIDs that are supported on an
+  adapter with this instance of EFI_ADAPTER_INFORMATION_PROTOCOL. The list is returned
+  in InfoTypesBuffer, and the number of GUID pointers in InfoTypesBuffer is returned in
+  InfoTypesBufferCount.
+
+  @param[in]  This                  A pointer to the EFI_ADAPTER_INFORMATION_PROTOCOL instance.
+  @param[out] InfoTypesBuffer       A pointer to the array of InformationType GUIDs that are supported
+                                    by This.
+  @param[out] InfoTypesBufferCount  A pointer to the number of GUIDs present in InfoTypesBuffer.
+
+  @retval EFI_SUCCESS               The list of information type GUIDs that are supported on this adapter was
+                                    returned in InfoTypesBuffer. The number of information type GUIDs was
+                                    returned in InfoTypesBufferCount.
+  @retval EFI_INVALID_PARAMETER     This is NULL.
+  @retval EFI_INVALID_PARAMETER     InfoTypesBuffer is NULL.
+  @retval EFI_INVALID_PARAMETER     InfoTypesBufferCount is NULL.
+  @retval EFI_OUT_OF_RESOURCES      There is not enough pool memory to store the results.
+
+**/
+EFI_STATUS
+EFIAPI
+Pp2AipGetSupportedTypes (
+  IN  EFI_ADAPTER_INFORMATION_PROTOCOL  *This,
+  OUT EFI_GUID                          **InfoTypesBuffer,
+  OUT UINTN                             *InfoTypesBufferCount
+  )
+{
+  if (This == NULL || InfoTypesBuffer == NULL || InfoTypesBufferCount == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  *InfoTypesBuffer = AllocateZeroPool (sizeof (EFI_GUID));
+  if (*InfoTypesBuffer == NULL) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+
+  *InfoTypesBufferCount = 1;
+  (*InfoTypesBuffer)[0] = gEfiAdapterInfoMediaStateGuid;
+
+  return EFI_SUCCESS;
+}
+
 STATIC
 VOID
 Pp2DxeParsePortPcd (
@@ -1290,6 +1442,11 @@ Pp2DxeInitialiseController (
     Pp2Context->Instance = DeviceInstance;
     DeviceInstance++;
 
+    /* Prepare AIP Protocol */
+    Pp2Context->Aip.GetInformation    = Pp2AipGetInformation;
+    Pp2Context->Aip.SetInformation    = Pp2AipSetInformation;
+    Pp2Context->Aip.GetSupportedTypes = Pp2AipGetSupportedTypes;
+
     /* Install SNP protocol */
     Status = Pp2DxeSnpInstall(Pp2Context);
     if (EFI_ERROR(Status)) {
-- 
2.7.4