[edk2-devel] [PATCH edk2-platforms v3 2/5] Silicon/Broadcom/BcmGenetDxe: add support for broadcast filtering

[Ard Biesheuvel]

Add a helper to configure the first MDF filter for filtering the
broadcast Ethernet address.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel at arm.com>
---
 Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.h |  7 ++++++
 Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.c | 24 ++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.h b/Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.h
index 2e7b78322bcd..1dc7a51a1ca6 100644
--- a/Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.h
+++ b/Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.h
@@ -107,6 +107,7 @@
 #define GENET_UMAC_MDF_CTRL                     0xe50
 #define GENET_UMAC_MDF_ADDR0(n)                 (0xe54 + (n) * 0x8)
 #define GENET_UMAC_MDF_ADDR1(n)                 (0xe58 + (n) * 0x8)
+#define GENET_MAX_MDF_FILTER                    17
 
 #define GENET_DMA_DESC_COUNT                    256
 #define GENET_DMA_DESC_SIZE                     12
@@ -300,6 +301,12 @@ GenetSetPromisc (
   IN BOOLEAN            Enable
   );
 
+VOID
+GenetEnableBroadcastFilter (
+  IN GENET_PRIVATE_DATA   *Genet,
+  IN BOOLEAN              Enable
+  );
+
 VOID
 GenetDmaInitRings (
   IN GENET_PRIVATE_DATA *Genet
diff --git a/Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.c b/Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.c
index af7c06656433..2176bb451e7d 100644
--- a/Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.c
+++ b/Silicon/Broadcom/Drivers/Net/BcmGenetDxe/GenetUtil.c
@@ -492,6 +492,30 @@ GenetSetPromisc (
   GenetMmioWrite (Genet, GENET_UMAC_CMD, Value);
 }
 
+/**
+  Enable the MAC filter for the Ethernet broadcast address
+
+  @param  Genet[in]   Pointer to GENET_PRIVATE_DATA.
+  @param  Enable[in]  Promiscuous mode state.
+
+**/
+VOID
+GenetEnableBroadcastFilter (
+  IN GENET_PRIVATE_DATA   *Genet,
+  IN BOOLEAN              Enable
+  )
+{
+  UINT32 Value;
+
+  Value = (1U << GENET_MAX_MDF_FILTER) - 1;
+  if (Enable) {
+    GenetMmioWrite (Genet, GENET_UMAC_MDF_ADDR0 (0), 0xffff);
+    GenetMmioWrite (Genet, GENET_UMAC_MDF_ADDR1 (0), 0xffffffff);
+    Value &= ~BIT0;
+  }
+  GenetMmioWrite (Genet, GENET_UMAC_MDF_CTRL, Value);
+}
+
 /**
   Configure DMA TX and RX queues, enabling them.
 
-- 
2.17.1


-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.

View/Reply Online (#59052): https://edk2.groups.io/g/devel/message/59052
Mute This Topic: https://groups.io/mt/74130975/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub  [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-