公开(公告)号：US11880333B2

公开(公告)日：2024-01-23

申请号：US17314313

申请日：2021-05-07

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jason A. T. Jones ,  Sriramakrishnan Govindarajan ,  Mihir Narendra Mody ,  Kishon Vijay Abraham Israel Vijayponraj ,  Bradley Douglas Cobb ,  Sanand Prasad ,  Gregory Raymond Shurtz ,  Martin Jeffrey Ambrose ,  Jayant Thakur

IPC: G06F15/78 ,  G06F13/10

CPC classification number: G06F15/7807 ,  G06F13/10 ,  G06F15/7864

Abstract: An integrated circuit. The integrated circuit comprises an interconnect communication bus and a plurality of peripheral component interconnect (PCI) multi-function endpoints (MFN-EPs) coupled to the interconnect communication bus, each PCI MFN-EP comprising a multiplexing device, a first address translation unit (ATU), and at least one PCI function circuit, each PCI function circuit comprising another ATU and a plurality of base address registers (BARs).

公开(公告)号：US11609866B2

公开(公告)日：2023-03-21

申请号：US17073925

申请日：2020-10-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sriramakrishnan Govindarajan ,  Kishon Vijay Abraham Israel Vijayponraj ,  Mihir Narendra Mody ,  Jason A. T. Jones

IPC: G06F13/16 ,  G06F13/42 ,  G06F12/10

Abstract: A peripheral proxy subsystem is placed between multiple hosts, each having a root controller, and single root I/O virtualization (SR-IOV) peripheral devices that are to be shared. The peripheral proxy subsystem provides a root controller for coupling to the endpoint of the SR-IOV peripheral device or devices and multiple endpoints for coupling to the root controllers of the hosts. The peripheral proxy subsystem maps the virtual functions of an SR-IOV peripheral device to the multiple endpoints as desired to allow the virtual functions to be allocated to the hosts. The physical function of the SR-IOV peripheral device is managed by the peripheral proxy device to provide the desired number of virtual functions. The virtual functions of the SR-IOV peripheral device are then presented to the appropriate host as a physical function or a virtual function.

公开(公告)号：US12056076B2

公开(公告)日：2024-08-06

申请号：US17135129

申请日：2020-12-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kishon Vijay Abraham Israel Vijayponraj ,  Sriramakrishnan Govindarajan ,  Mihir Narendra Mody

IPC: G06F13/40 ,  G06F13/16 ,  G06F13/42 ,  G06F21/45

CPC classification number: G06F13/4027 ,  G06F13/1668 ,  G06F13/4282 ,  G06F21/45 ,  G06F2213/0026

Abstract: In some examples, a method includes receiving a transaction at an inbound port, the transaction including a requester identification (ID), a traffic class, and a peripheral component interconnect express (PCIe) address. The method includes providing an attribute based at least in part on the traffic class. The method includes providing a context ID based on the attribute and the requester ID. The method includes accessing a region of memory responsive to the transaction, the region of memory corresponding to the context ID.

公开(公告)号：US20240061768A1

公开(公告)日：2024-02-22

申请号：US18496178

申请日：2023-10-27

Applicant: Texas Instruments Incorporated

Inventor： Sriramakrishnan Govindarajan ,  Kishon Vijay Abraham Israel Vijayponraj ,  Mihir Narendra Mody ,  Vijaya Rama Raju Kanumuri ,  Cory Dean Stewart

IPC: G06F12/02 ,  G06F9/46 ,  G06F12/06

CPC classification number: G06F12/0238 ,  G06F9/467 ,  G06F12/063 ,  G06F12/0292

Abstract: Transaction mappers, methods and systems are provided. An example transaction mapper includes a table that associates virtual identification values with bus-device-function (BDF) values; and a firewall that receives an input-output request including a first virtual identification value of the virtual identification values, the first virtual identification value being associated with a function of an external peripheral, generates a first BDF value and a first traffic class value based on the table and the first virtual identification value, determine whether the first virtual identification value satisfies a threshold range, and determine whether to forward the input-output request to an external host device based on whether the first virtual identification value satisfies the threshold range.

公开(公告)号：US11314673B2

公开(公告)日：2022-04-26

申请号：US17134861

申请日：2020-12-28

Applicant: Texas Instruments Incorporated

Inventor： Sriramakrishnan Govindarajan ,  Kishon Vijay Abraham Israel Vijayponraj ,  Mihir Narendra Mody

IPC: G06F13/20 ,  G06F13/42

Abstract: A configurable multi-function Peripheral Component Interchange Express (PCIe) endpoint controller, integrated in a system-on-chip (SoC), that exposes multiple functions of multiple processing subsystems (e.g., peripherals) to a host. The SoC may include a centralized transaction tunneling unit and a multi-function interrupt manager. The processing subsystems output data to the host via the centralized transaction tunneling unit, which translates addresses provided by the host to a local address of the SoC. Therefore, the centralized transaction tunneling unit enables those processing subsystems to consume addresses provided by the host without the need for software intervention and software-based translation. The SoC may also provide isolation between each function provided by the processing systems. The multi-function interrupt manager enables the endpoint controller to propagate interrupt messages received from the processing subsystems to the host.

公开(公告)号：US12050541B2

公开(公告)日：2024-07-30

申请号：US18186524

申请日：2023-03-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sriramakrishnan Govindarajan ,  Kishon Vijay Abraham Israel Vijayponraj ,  Mihir Narendra Mody ,  Jason A. T. Jones

IPC: G06F13/16 ,  G06F12/10 ,  G06F13/40 ,  G06F13/42

CPC classification number: G06F13/1668 ,  G06F12/10 ,  G06F13/4022 ,  G06F13/4221 ,  G06F13/4282 ,  G06F2213/0026

Abstract: A peripheral proxy subsystem is placed between multiple hosts, each having a root controller, and single root I/O virtualization (SR-IOV) peripheral devices that are to be shared. The peripheral proxy subsystem provides a root controller for coupling to the endpoint of the SR-IOV peripheral device or devices and multiple endpoints for coupling to the root controllers of the hosts. The peripheral proxy subsystem maps the virtual functions of an SR-IOV peripheral device to the multiple endpoints as desired to allow the virtual functions to be allocated to the hosts. The physical function of the SR-IOV peripheral device is managed by the peripheral proxy device to provide the desired number of virtual functions. The virtual functions of the SR-IOV peripheral device are then presented to the appropriate host as a physical function or a virtual function.

公开(公告)号：US11853199B2

公开(公告)日：2023-12-26

申请号：US17538662

申请日：2021-11-30

Applicant: Texas Instruments Incorporated

Inventor： Sriramakrishnan Govindarajan ,  Kishon Vijay Abraham Israel Vijayponraj ,  Mihir Narendra Mody ,  Vijaya Rama Raju Kanumuri ,  Cory Dean Stewart

IPC: G06F12/00 ,  G06F12/02 ,  G06F9/46 ,  G06F12/06

CPC classification number: G06F12/0238 ,  G06F9/467 ,  G06F12/0292 ,  G06F12/063

Abstract: A system is provided. In some examples, the system includes a first peripheral circuit and a memory management circuit coupled to the first peripheral circuit. The memory management circuit comprises a first table that associates virtual identification values with address space select values. The system also includes a transaction mapper circuit coupled to the memory management circuit. The transaction mapper circuit comprises a second table that associates virtual identification values with bus-device-function values.

公开(公告)号：US20210263883A1

公开(公告)日：2021-08-26

申请号：US17314313

申请日：2021-05-07

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jason A.T. Jones ,  Sriramakrishnan Govindarajan ,  Mihir Narendra Mody ,  Kishon Vijay Abraham Israel Vijayponraj ,  Bradley Douglas Cobb ,  Sanand Prasad ,  Gregory Raymond Shurtz ,  Martin Jeffrey Ambrose ,  Jayant Thakur

IPC: G06F15/78 ,  G06F13/10

Abstract: An integrated circuit. The integrated circuit comprises an interconnect communication bus and a plurality of peripheral component interconnect (PCI) multi-function endpoints (MFN-EPs) coupled to the interconnect communication bus, each PCI MFN-EP comprising a multiplexing device, a first address translation unit (ATU), and at least one PCI function circuit, each PCI function circuit comprising another ATU and a plurality of base address registers (BARs).

公开(公告)号：US11030144B2

公开(公告)日：2021-06-08

申请号：US16221364

申请日：2018-12-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jason A. T. Jones ,  Sriramakrishnan Govindarajan ,  Mihir Narendra Mody ,  Kishon Vijay Abraham Israel Vijayponraj ,  Bradley Douglas Cobb ,  Sanand Prasad ,  Gregory Raymond Shurtz ,  Martin Jeffrey Ambrose ,  Jayant Thakur

IPC: G06F15/78 ,  G06F13/10

Abstract: An integrated circuit. The integrated circuit comprises an interconnect communication bus and a plurality of peripheral component interconnect (PCI) multi-function endpoints (MFN-EPs) coupled to the interconnect communication bus, each PCI MFN-EP comprising a multiplexing device, a first address translation unit (ATU), and at least one PCI function circuit, each PCI function circuit comprising another ATU and a plurality of base address registers (BARs).

公开(公告)号：US12242377B2

公开(公告)日：2025-03-04

申请号：US18496178

申请日：2023-10-27

Applicant: Texas Instruments Incorporated

Inventor： Sriramakrishnan Govindarajan ,  Kishon Vijay Abraham Israel Vijayponraj ,  Mihir Narendra Mody ,  Vijaya Rama Raju Kanumuri ,  Cory Dean Stewart

IPC: G06F12/00 ,  G06F9/46 ,  G06F12/02 ,  G06F12/06

Abstract: Transaction mappers, methods and systems are provided. An example transaction mapper includes a table that associates virtual identification values with bus-device-function (BDF) values; and a firewall that receives an input-output request including a first virtual identification value of the virtual identification values, the first virtual identification value being associated with a function of an external peripheral, generates a first BDF value and a first traffic class value based on the table and the first virtual identification value, determine whether the first virtual identification value satisfies a threshold range, and determine whether to forward the input-output request to an external host device based on whether the first virtual identification value satisfies the threshold range.