[dpdk-dev] [PATCH v3 3/6] ena: disable readless communication regarding to HW revision

2016-07-05 Thread Bruce Richardson
On Tue, Jul 05, 2016 at 12:02:41PM +0200, Jan M?dala wrote: > Bruce, > > Here's explanation of readless communication (on behalf of Alex): > > > "readless" refers to ability to read ENA registers without actually > > issuing read request from host (x86). > > Instead, host programs 2 registers on

[dpdk-dev] [PATCH v3 3/6] ena: disable readless communication regarding to HW revision

2016-07-05 Thread Jan Mędala
Bruce, Here's explanation of readless communication (on behalf of Alex): > "readless" refers to ability to read ENA registers without actually > issuing read request from host (x86). > Instead, host programs 2 registers on device that trigger DMA from device > to host and report register value.

[dpdk-dev] [PATCH v3 3/6] ena: disable readless communication regarding to HW revision

2016-07-04 Thread Bruce Richardson
On Thu, Jun 30, 2016 at 05:04:56PM +0200, Jan Medala wrote: > Depending on HW revision readless communcation between host and device > may be unavailable. > In that case prevent PMD of seting up readless communication mechanism. > The idea of readless communication is a strange one. Can you

[dpdk-dev] [PATCH v3 3/6] ena: disable readless communication regarding to HW revision

2016-06-30 Thread Jan Medala
Depending on HW revision readless communcation between host and device may be unavailable. In that case prevent PMD of seting up readless communication mechanism. Signed-off-by: Alexander Matushevsky Signed-off-by: Jakub Palider Signed-off-by: Jan Medala --- drivers/net/ena/ena_ethdev.c | 12