diff options
Diffstat (limited to 'Platform/Marvell/Drivers/Net/MvMdioDxe/MvMdioDxe.c')
| -rw-r--r-- | Platform/Marvell/Drivers/Net/MvMdioDxe/MvMdioDxe.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/Platform/Marvell/Drivers/Net/MvMdioDxe/MvMdioDxe.c b/Platform/Marvell/Drivers/Net/MvMdioDxe/MvMdioDxe.c new file mode 100644 index 0000000000..ae466d7019 --- /dev/null +++ b/Platform/Marvell/Drivers/Net/MvMdioDxe/MvMdioDxe.c @@ -0,0 +1,237 @@ +/********************************************************************************
+Copyright (C) 2016 Marvell International Ltd.
+
+Marvell BSD License Option
+
+If you received this File from Marvell, you may opt to use, redistribute and/or
+modify this File under the following licensing terms.
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ * Neither the name of Marvell nor the names of its contributors may be
+ used to endorse or promote products derived from this software without
+ specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*******************************************************************************/
+
+#include <Protocol/DriverBinding.h>
+#include <Protocol/Mdio.h>
+
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/IoLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PcdLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+
+#include "MvMdioDxe.h"
+
+UINT64 MdioBase = 0;
+
+STATIC
+EFI_STATUS
+MdioCheckParam (
+ INTN PhyAddr,
+ INTN RegOff
+ )
+{
+ if (PhyAddr > MVEBU_PHY_ADDR_MASK) {
+ DEBUG((DEBUG_ERROR, "Invalid PHY address %d\n", PhyAddr));
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (RegOff > MVEBU_PHY_REG_MASK) {
+ DEBUG((DEBUG_ERROR, "Invalid register offset %d\n", RegOff));
+ return EFI_INVALID_PARAMETER;
+ }
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+MdioWaitReady (
+ VOID
+ )
+{
+ UINT32 Timeout = MVEBU_SMI_TIMEOUT;
+ UINT32 MdioReg;
+
+ /* wait till the SMI is not busy */
+ do {
+ /* read smi register */
+ MdioReg = MmioRead32(MdioBase);
+ if (Timeout-- == 0) {
+ DEBUG((DEBUG_ERROR, "SMI busy Timeout\n"));
+ return EFI_TIMEOUT;
+ }
+ } while (MdioReg & MVEBU_SMI_BUSY);
+
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+MdioWaitValid (
+ VOID
+ )
+{
+ UINT32 Timeout = MVEBU_SMI_TIMEOUT;
+ UINT32 MdioReg;
+
+ /* wait till read value is ready */
+ do {
+ /* read smi register */
+ MdioReg = MmioRead32 (MdioBase);
+ if (Timeout-- == 0) {
+ DEBUG((DEBUG_ERROR, "SMI read ready time-out\n"));
+ return EFI_TIMEOUT;
+ }
+ } while (!(MdioReg & MVEBU_SMI_READ_VALID));
+
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+MdioOperation (
+ IN CONST MARVELL_MDIO_PROTOCOL *This,
+ IN UINT32 PhyAddr,
+ IN UINT32 RegOff,
+ IN BOOLEAN Write,
+ IN OUT UINT32 *Data
+ )
+{
+ UINT32 MdioReg;
+ EFI_STATUS Status;
+
+ Status = MdioCheckParam (PhyAddr, RegOff);
+ if (EFI_ERROR(Status)) {
+ DEBUG((DEBUG_ERROR, "MdioDxe: wrong parameters\n"));
+ return Status;
+ }
+
+ /* wait till the SMI is not busy */
+ Status = MdioWaitReady ();
+ if (EFI_ERROR(Status)) {
+ DEBUG((DEBUG_ERROR, "MdioDxe: MdioWaitReady error\n"));
+ return Status;
+ }
+
+ /* fill the phy addr and reg offset and write opcode and data */
+ MdioReg = (PhyAddr << MVEBU_SMI_DEV_ADDR_OFFS)
+ | (RegOff << MVEBU_SMI_REG_ADDR_OFFS);
+ if (Write) {
+ MdioReg &= ~MVEBU_SMI_OPCODE_READ;
+ MdioReg |= (*Data << MVEBU_SMI_DATA_OFFS);
+ } else {
+ MdioReg |= MVEBU_SMI_OPCODE_READ;
+ }
+
+ /* write the smi register */
+ MdioRegWrite32 (MdioReg, MdioBase);
+
+ /* make sure that the write transaction is over */
+ Status = Write ? MdioWaitReady () : MdioWaitValid ();
+ if (EFI_ERROR(Status)) {
+ DEBUG((DEBUG_ERROR, "MdioDxe: MdioWaitReady error\n"));
+ return Status;
+ }
+
+ if (!Write) {
+ *Data = MmioRead32 (MdioBase) & MVEBU_SMI_DATA_MASK;
+ }
+
+ return EFI_SUCCESS;
+}
+
+STATIC
+EFI_STATUS
+MvMdioRead (
+ IN CONST MARVELL_MDIO_PROTOCOL *This,
+ IN UINT32 PhyAddr,
+ IN UINT32 RegOff,
+ IN UINT32 *Data
+ )
+{
+ EFI_STATUS Status;
+
+ Status = MdioOperation (
+ This,
+ PhyAddr,
+ RegOff,
+ FALSE,
+ Data
+ );
+
+ return Status;
+}
+
+EFI_STATUS
+MvMdioWrite (
+ IN CONST MARVELL_MDIO_PROTOCOL *This,
+ IN UINT32 PhyAddr,
+ IN UINT32 RegOff,
+ IN UINT32 Data
+ )
+{
+ return MdioOperation (
+ This,
+ PhyAddr,
+ RegOff,
+ TRUE,
+ &Data
+ );
+}
+
+EFI_STATUS
+EFIAPI
+MvMdioDxeInitialise (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ MARVELL_MDIO_PROTOCOL *Mdio;
+ EFI_STATUS Status;
+ EFI_HANDLE Handle = NULL;
+
+ Mdio = AllocateZeroPool (sizeof (MARVELL_MDIO_PROTOCOL));
+ Mdio->Read = MvMdioRead;
+ Mdio->Write = MvMdioWrite;
+ MdioBase = PcdGet64 (PcdMdioBaseAddress);
+ if (MdioBase == 0) {
+ DEBUG((DEBUG_ERROR, "MdioDxe: PcdMdioBaseAddress not set\n"));
+ return EFI_INVALID_PARAMETER;
+ }
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Handle,
+ &gMarvellMdioProtocolGuid, Mdio,
+ NULL
+ );
+
+ if (EFI_ERROR(Status)) {
+ DEBUG((DEBUG_ERROR, "Failed to install interfaces\n"));
+ return Status;
+ }
+
+ return EFI_SUCCESS;
+}
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