/** @file
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This driver module adds SATA controller support.
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Copyright 2017-2018, 2020 NXP
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/DebugLib.h>
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#include <Library/IoLib.h>
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#include <Library/NonDiscoverableDeviceRegistrationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#define SATA_PPCFG 0xA8
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#define SATA_PTC 0xC8
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#define SATA_PAXIC 0xC0
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#define PORT_PHYSICAL 0xA003FFFE
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#define PORT_TRANSPORT 0x08000025
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#define PORT_RXWM 0x08000029
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#define ENABLE_NONZERO_4MB_PRD 0x10000000
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/**
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This function gets registered as a callback to perform USB controller intialization
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@param Event Event whose notification function is being invoked.
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@param Context Pointer to the notification function's context.
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**/
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STATIC
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VOID
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EFIAPI
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SataEndOfDxeCallback (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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{
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EFI_STATUS Status;
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UINT32 NumSataController;
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UINT32 Index;
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UINT32 Data;
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UINTN ControllerAddr;
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NumSataController = PcdGet32 (PcdNumSataController);
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for (Index = 0; Index < NumSataController; Index++) {
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ControllerAddr = PcdGet64 (PcdSataBaseAddr) +
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(Index * PcdGet32 (PcdSataSize));
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//
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// configuring Physical Control Layer parameters for Port 0
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//
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MmioWrite32 ((UINTN)(ControllerAddr + SATA_PPCFG), PORT_PHYSICAL);
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//
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// This register controls the configuration of the
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// Transport Layer for Port 0
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// Errata Description : The default Rx watermark value may be insufficient
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// for some hard drives and result in a false CRC or internal errors.
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// Workaround: Change PTC[RXWM] field at offset 0xC8 to 0x29. Do not change
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// the other reserved fields of the register.
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//
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Data = MmioRead32 ((UINTN)(ControllerAddr + SATA_PTC));
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if (PcdGetBool (PcdSataErratumA009185)) {
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Data |= PORT_RXWM;
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} else {
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Data |= PORT_TRANSPORT;
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}
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MmioWrite32 ((UINTN)(ControllerAddr + SATA_PTC), Data);
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//
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// Enable Non-Zero 4 MB PRD entries.
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//
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MmioOr32 ((UINTN)(ControllerAddr + SATA_PAXIC), ENABLE_NONZERO_4MB_PRD);
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Status = RegisterNonDiscoverableMmioDevice (
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NonDiscoverableDeviceTypeAhci,
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NonDiscoverableDeviceDmaTypeNonCoherent,
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NULL,
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NULL,
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1,
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ControllerAddr, PcdGet32 (PcdSataSize)
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_ERROR, "Failed to register SATA device 0x%x, error 0x%r \n",
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ControllerAddr, Status));
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}
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}
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}
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/**
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The Entry Point of module. It follows the standard UEFI driver model.
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The entry point is executed successfully.
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@retval Other Some error occurs when executing this entry point
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**/
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EFI_STATUS
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EFIAPI
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InitializeSataController (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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EFI_EVENT EndOfDxeEvent;
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Status = gBS->CreateEventEx (
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EVT_NOTIFY_SIGNAL,
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TPL_CALLBACK,
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SataEndOfDxeCallback,
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NULL,
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&gEfiEndOfDxeEventGroupGuid,
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&EndOfDxeEvent
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);
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return Status;
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}
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