Hardware command block delivery queue for host adapters and othe

Details Hardware command block delivery queue for host adapters and othe Hardware command block delivery queue for host adapters and othe

1997-03-13

1999-08-17

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output data buffering

710 5, 710 21, 710 52, G06F 15167

Patent

active

059387475

ABSTRACT:
A method for queuing hardware control blocks, such as SCBs, for a system including a system processor coupled to a plurality of host adapter devices and a buffer memory controller device by an I/O bus is based on use of an endless new hardware command block queue, and an endless done hardware command block queue. The hardware command blocks for a plurality of devices, where each device includes a device processor, are managed by forming an endless queue for a device in a memory external to the device. A first pointer to the endless queue is maintained in a memory that is not within the memory space of the device processor. A second pointer to the endless queue is maintained in a memory addressable by the device processor. The first and second pointers address the head and tail hardware command block array sites of the endless queue.

REFERENCES:
patent: 4543626 (1985-09-01), Bean et al.
patent: 4601586 (1986-07-01), Bahr et al.
patent: 4615001 (1986-09-01), Hudgins
patent: 4682284 (1987-07-01), Schrofer
patent: 4930069 (1990-05-01), Batra et al.
patent: 4939644 (1990-07-01), Harrington et al.
patent: 4975829 (1990-12-01), Clarey et al.
patent: 4980852 (1990-12-01), Giroir
patent: 5239634 (1993-08-01), Buch
patent: 5418913 (1995-05-01), Fujimoto
patent: 5459839 (1995-10-01), Swarts et al.
patent: 5548728 (1996-08-01), Danknick
patent: 5548795 (1996-08-01), Au
patent: 5562913 (1996-10-01), Crick et al.
patent: 5581705 (1996-12-01), Passint et al.
patent: 5606679 (1997-02-01), Cohn et al.
patent: 5619685 (1997-04-01), Schiavone
patent: 5680303 (1997-10-01), Libucha et al.
patent: 5729681 (1998-03-01), Aditya et al.
patent: 5745785 (1998-04-01), Shoji et al.
patent: 5781199 (1998-07-01), Oniki et al.

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