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1. (US20090083497) Multi-media processor cache with cache line locking and unlocking

专利局 : 美国
申请号: 11862063 申请日: 26.09.2007
公布号: 20090083497 公布日: 26.03.2009
授权号: 08200917 授权日: 12.06.2012
公布类型: B2
国际专利分类:
G06F 12/14
G06F 12/12
G06F 12/08
G PHYSICS
06
计算;推算;计数
F
电数字数据处理
12
在存储器系统或体系结构内的存取、寻址或分配(信息存储本身入G11)
14
阻止存储器越权使用的保护
G PHYSICS
06
计算;推算;计数
F
电数字数据处理
12
在存储器系统或体系结构内的存取、寻址或分配(信息存储本身入G11)
02
寻址或地址分配;地址的重新分配
08
在分级结构的存储系统中的寻址、地址分配、或地址的重新分配,例如,虚拟存储系统
12
替换控制
G PHYSICS
06
计算;推算;计数
F
电数字数据处理
12
在存储器系统或体系结构内的存取、寻址或分配(信息存储本身入G11)
02
寻址或地址分配;地址的重新分配
08
在分级结构的存储系统中的寻址、地址分配、或地址的重新分配,例如,虚拟存储系统
申请人: QUALCOMM Incorporated
发明人: Yu Chun
Jiao Guofang
Wei Jian
代理人: Evans Matthew J.
Gambale, Jr. James R.
优先权数据:
标题: (EN) Multi-media processor cache with cache line locking and unlocking
摘要: front page image
(EN)

The disclosure relates to techniques for locking and unlocking cache lines in a cache included within a multi-media processor that performs read-modify-write functions using batch read and write requests for data stored in either an external memory or an embedded memory. The techniques may comprise receiving a read request in a batch of read requests for data included in a section of a cache line and setting a lock bit associated with the section in response to the read request. When the lock bit is set, additional read requests in the batch of read requests are unable to access data in that section of the cache line. The lock bit may be unset in response to a write request in a batch of write requests to update the data previously read out from that section of the cache line.