Introduce a protocol that can be exposed by a platform for devices that are not discoverable, usually because they are wired straight to the memory bus rather than to an enumerable bus like PCI or USB.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> --- MdeModulePkg/Include/Protocol/NonDiscoverableDevice.h | 90 ++++++++++++++++++++ MdeModulePkg/MdeModulePkg.dec | 3 + 2 files changed, 93 insertions(+) diff --git a/MdeModulePkg/Include/Protocol/NonDiscoverableDevice.h b/MdeModulePkg/Include/Protocol/NonDiscoverableDevice.h new file mode 100644 index 000000000000..47ed841b407b --- /dev/null +++ b/MdeModulePkg/Include/Protocol/NonDiscoverableDevice.h @@ -0,0 +1,90 @@ +/** @file + Protocol to describe devices that are not on a discoverable bus + + Copyright (c) 2016, 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. + +**/ + +#ifndef __NON_DISCOVERABLE_DEVICE_H__ +#define __NON_DISCOVERABLE_DEVICE_H__ + +#include <IndustryStandard/Acpi.h> + +#define EDKII_NON_DISCOVERABLE_DEVICE_PROTOCOL_GUID \ + { 0x0d51905b, 0xb77e, 0x452a, {0xa2, 0xc0, 0xec, 0xa0, 0xcc, 0x8d, 0x51, 0x4a } } + +// +// Protocol interface structure +// +typedef struct _NON_DISCOVERABLE_DEVICE NON_DISCOVERABLE_DEVICE; + +// +// Data Types +// +typedef enum { + NonDiscoverableDeviceTypeAmba, + NonDiscoverableDeviceTypeOhci, + NonDiscoverableDeviceTypeUhci, + NonDiscoverableDeviceTypeEhci, + NonDiscoverableDeviceTypeXhci, + NonDiscoverableDeviceTypeAhci, + NonDiscoverableDeviceTypeSdhci, + NonDiscoverableDeviceTypeUfs, + NonDiscoverableDeviceTypeNvme, + NonDiscoverableDeviceTypeMax, +} NON_DISCOVERABLE_DEVICE_TYPE; + +typedef enum { + NonDiscoverableDeviceDmaTypeCoherent, + NonDiscoverableDeviceDmaTypeNonCoherent, + NonDiscoverableDeviceDmaTypeMax, +} NON_DISCOVERABLE_DEVICE_DMA_TYPE; + +// +// Function Prototypes +// + +/** + Perform device specific initialization before the device is started + + @param This The non-discoverable device protocol pointer + + @retval EFI_SUCCESS Initialization successful, the device may be used + @retval Other Initialization failed, device should not be started +**/ +typedef +EFI_STATUS +(EFIAPI *NON_DISCOVERABLE_DEVICE_INIT) ( + IN NON_DISCOVERABLE_DEVICE *This + ); + +struct _NON_DISCOVERABLE_DEVICE { + // + // The type of device + // + NON_DISCOVERABLE_DEVICE_TYPE Type; + // + // Whether this device is DMA coherent + // + NON_DISCOVERABLE_DEVICE_DMA_TYPE DmaType; + // + // Initialization function for the device + // + NON_DISCOVERABLE_DEVICE_INIT Initialize; + // + // The MMIO and I/O regions owned by the device + // + EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Resources; +}; + +extern EFI_GUID gEdkiiNonDiscoverableDeviceProtocolGuid; + +#endif diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec index 74b870051c67..6b956fc80c93 100644 --- a/MdeModulePkg/MdeModulePkg.dec +++ b/MdeModulePkg/MdeModulePkg.dec @@ -505,6 +505,9 @@ [Protocols] # Include/Protocol/Ps2Policy.h gEfiPs2PolicyProtocolGuid = { 0x4DF19259, 0xDC71, 0x4D46, { 0xBE, 0xF1, 0x35, 0x7B, 0xB5, 0x78, 0xC4, 0x18 } } + ## Include/Protocol/NonDiscoverableDevice.h + gEdkiiNonDiscoverableDeviceProtocolGuid = { 0x0d51905b, 0xb77e, 0x452a, {0xa2, 0xc0, 0xec, 0xa0, 0xcc, 0x8d, 0x51, 0x4a } } + # # [Error.gEfiMdeModulePkgTokenSpaceGuid] # 0x80000001 | Invalid value provided. -- 2.7.4 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
