diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2017-08-01 19:50:35 +0100 |
|---|---|---|
| committer | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2017-11-16 17:30:58 +0000 |
| commit | 11bca685611684ac585aaac0ddd85427964978c5 (patch) | |
| tree | 72e02b4a33b5aaccf9ad8bcb02bd9211dc8608b4 /Silicon/Socionext/SynQuacer/Drivers/Net/NetsecDxe/netsec_for_uefi/pfdep_uefi.c | |
| parent | 1f47a73e184b4514cbc5c099fec1bd564e394db4 (diff) | |
| download | edk2-platforms-11bca685611684ac585aaac0ddd85427964978c5.tar.xz | |
Silicon/Socionext: add driver for NETSEC network controller
This adds the NetSecDxe driver provided by Socionext, but reworked
extensively to improve compliance with the SimpleNetworkProtocol API,
and to avoid uncached allocations for streaming DMA.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Diffstat (limited to 'Silicon/Socionext/SynQuacer/Drivers/Net/NetsecDxe/netsec_for_uefi/pfdep_uefi.c')
| -rw-r--r-- | Silicon/Socionext/SynQuacer/Drivers/Net/NetsecDxe/netsec_for_uefi/pfdep_uefi.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/Silicon/Socionext/SynQuacer/Drivers/Net/NetsecDxe/netsec_for_uefi/pfdep_uefi.c b/Silicon/Socionext/SynQuacer/Drivers/Net/NetsecDxe/netsec_for_uefi/pfdep_uefi.c new file mode 100644 index 0000000000..b43d1aaff0 --- /dev/null +++ b/Silicon/Socionext/SynQuacer/Drivers/Net/NetsecDxe/netsec_for_uefi/pfdep_uefi.c @@ -0,0 +1,176 @@ +/** @file
+
+ Copyright (c) 2016 - 2017, Socionext Inc. All rights reserved.<BR>
+ Copyright (c) 2017, Linaro, Ltd. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "pfdep.h"
+
+#include <Library/DebugLib.h>
+#include <Library/DmaLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/NetLib.h>
+#include <Library/SynchronizationLib.h>
+
+/**********************************************************************
+ * Variable definitions
+ **********************************************************************/
+pfdep_debug_level_t pfdep_debug_level = PFDEP_DEBUG_LEVEL_NOTICE;
+
+
+/**********************************************************************
+ * Function definitions
+ **********************************************************************/
+
+VOID*
+pfdep_malloc (
+ IN pfdep_uint32 len
+ )
+{
+ return AllocatePool (len);
+}
+
+VOID
+pfdep_free (
+ IN VOID *addr
+ )
+{
+ FreePool (addr);
+}
+
+pfdep_err_t
+pfdep_dma_malloc (
+ IN pfdep_dev_handle_t dev_handle,
+ IN pfdep_uint32 len,
+ OUT VOID **addr_p,
+ OUT pfdep_phys_addr_t *phys_addr_p
+ )
+{
+ EFI_STATUS Status;
+ UINTN NumPages;
+ UINTN NumBytes;
+ VOID **Mapping;
+
+ NumPages = EFI_SIZE_TO_PAGES (ALIGN_VARIABLE(len) + sizeof *Mapping);
+ Status = DmaAllocateBuffer (EfiBootServicesData, NumPages, addr_p);
+ if (EFI_ERROR (Status)) {
+ return PFDEP_ERR_ALLOC;
+ }
+
+ //
+ // Stash the address of the MAPINFO struct at the end of the buffer,
+ // but make sure it appears aligned (the memory may be mapped uncached)
+ //
+ Mapping = (VOID **)((UINTN)*addr_p + ALIGN_VARIABLE(len));
+
+ NumBytes = EFI_PAGES_TO_SIZE (NumPages);
+ Status = DmaMap (MapOperationBusMasterCommonBuffer, *addr_p, &NumBytes,
+ phys_addr_p, Mapping);
+
+ if (EFI_ERROR (Status) || NumBytes < len) {
+ DmaFreeBuffer (NumPages, *addr_p);
+ return PFDEP_ERR_ALLOC;
+ }
+
+ return PFDEP_ERR_OK;
+}
+
+VOID
+pfdep_dma_free (
+ IN pfdep_dev_handle_t dev_handle,
+ IN pfdep_uint32 len,
+ IN VOID *addr,
+ IN pfdep_phys_addr_t phys_addr
+ )
+{
+ VOID *Mapping;
+
+ Mapping = *(VOID **)((UINTN)addr + ALIGN_VARIABLE(len));
+
+ DmaUnmap (Mapping);
+ DmaFreeBuffer (EFI_SIZE_TO_PAGES (ALIGN_VARIABLE(len) + sizeof Mapping),
+ addr);
+}
+
+//
+// On the receive path, we allocate a new packet and link it into the RX ring
+// before returning the received packet to the caller. This means we perform
+// one allocation and one free operation for each buffer received.
+// So let's cache a single packet, and get rid of most of the alloc/free
+// overhead on the RX path.
+//
+STATIC pfdep_pkt_handle_t mSparePacketBuffer;
+STATIC UINT32 mSparePacketBufferSize;
+
+pfdep_err_t
+pfdep_alloc_pkt_buf (
+ IN pfdep_dev_handle_t dev_handle,
+ IN pfdep_uint16 len,
+ OUT VOID **addr_p,
+ OUT pfdep_phys_addr_t *phys_addr_p,
+ OUT pfdep_pkt_handle_t *pkt_handle_p
+ )
+{
+ EFI_STATUS Status;
+ UINTN NumBytes;
+
+ NumBytes = ALIGN_VALUE (len, mCpu->DmaBufferAlignment);
+
+ if (InterlockedCompareExchange32 (&mSparePacketBufferSize, len, 0) == len) {
+ *pkt_handle_p = mSparePacketBuffer;
+ } else {
+ *pkt_handle_p = AllocateZeroPool (NumBytes + sizeof(PACKET_HANDLE) +
+ (mCpu->DmaBufferAlignment - 8));
+ if (*pkt_handle_p == NULL) {
+ return PFDEP_ERR_ALLOC;
+ }
+
+ (*pkt_handle_p)->Buffer = ALIGN_POINTER (*pkt_handle_p,
+ mCpu->DmaBufferAlignment);
+ }
+
+ *addr_p = (*pkt_handle_p)->Buffer;
+ Status = DmaMap (MapOperationBusMasterWrite, *addr_p, &NumBytes, phys_addr_p,
+ &(*pkt_handle_p)->Mapping);
+ if (EFI_ERROR (Status) || NumBytes < len) {
+ FreePool (*pkt_handle_p);
+ return PFDEP_ERR_ALLOC;
+ }
+ return PFDEP_ERR_OK;
+}
+
+VOID
+pfdep_free_pkt_buf (
+ IN pfdep_dev_handle_t dev_handle,
+ IN pfdep_uint16 len,
+ IN VOID *addr,
+ IN pfdep_phys_addr_t phys_addr,
+ IN pfdep_bool last_flag,
+ IN pfdep_pkt_handle_t pkt_handle
+ )
+{
+ if (last_flag != PFDEP_TRUE) {
+ return;
+ }
+
+ if (pkt_handle->Mapping != NULL) {
+ DmaUnmap (pkt_handle->Mapping);
+ }
+
+ if (pkt_handle->RecycleForTx) {
+ pkt_handle->Released = TRUE;
+ } else if (!InterlockedCompareExchange32 (&mSparePacketBufferSize, 0, len)) {
+ mSparePacketBuffer = pkt_handle;
+ } else {
+ FreePool (pkt_handle);
+ }
+}
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