microwatt

Author	SHA1	Message	Date
Benjamin Herrenschmidt	cff4b13a9b	wb_arbiter: Early master selection This flips the arbiter muxes on the same cycle as a new request comes in, thus avoiding a cycle latency. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	5 years ago
Benjamin Herrenschmidt	bc2acfde2f	wb_arbiter: Make arbiter size parametric Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	5 years ago
Benjamin Herrenschmidt	472d8f94a2	wb_arbiter: Avoid IDLE cycle when not changing master Consecutive accesses from the same master shouldn't need an IDLE cycle. Completely remove the IDLE state and switch master when the bus is idle, but stay on the last selected one between cycles. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	5 years ago
Benjamin Herrenschmidt	7a4a9b6377	wb_arbiter: Forward stall signals They are set to '1' for non-selected devices Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	5 years ago
Benjamin Herrenschmidt	1206dfe18c	Use a 3 way WB arbiter and cleanup fpga toplevel The 3rd master is currently unused, it will host the WB debug module. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	5 years ago
Anton Blanchard	df1165bdfc	Reformat wishbone code Signed-off-by: Anton Blanchard <anton@linux.ibm.com>	5 years ago
Anton Blanchard	5a29cb4699	Initial import of microwatt Signed-off-by: Anton Blanchard <anton@linux.ibm.com>	5 years ago