spi: put a request buffer infront of SPI
authorWesley W. Terpstra <wesley@sifive.com>
Sat, 19 Aug 2017 19:36:28 +0000 (12:36 -0700)
committerWesley W. Terpstra <wesley@sifive.com>
Sat, 19 Aug 2017 19:52:10 +0000 (12:52 -0700)
commita814cba04ffc83b0715339ee650eac358d7852b8
treeb9d6ef0d485ce2e817ae21b36c8b730493ebaa4f
parentf266b55da92e42350be5704b4fe7d2a934e986ae
spi: put a request buffer infront of SPI

This will prevent SPI from blocking other pbus requests.
src/main/scala/devices/spi/SPIPeriphery.scala