Re: [PATCH] net: netsec: reduce DMA mask to 40 bits

2018-05-28 Thread David Miller
From: Ard Biesheuvel Date: Fri, 25 May 2018 14:50:37 +0200 > The netsec network controller IP can drive 64 address bits for DMA, and > the DMA mask is set accordingly in the driver. However, the SynQuacer > SoC, which is the only silicon incorporating this IP at the moment, > integrates this IP

Re: [PATCH] net: netsec: reduce DMA mask to 40 bits

2018-05-26 Thread Jassi Brar
On 26 May 2018 at 11:46, Ard Biesheuvel wrote: > On 26 May 2018 at 05:44, Jassi Brar wrote: >> On 26 May 2018 at 08:56, Jassi Brar wrote: >>> On 26 May 2018 at 01:07, Robin Murphy wrote:

Re: [PATCH] net: netsec: reduce DMA mask to 40 bits

2018-05-26 Thread Ard Biesheuvel
On 26 May 2018 at 05:44, Jassi Brar wrote: > On 26 May 2018 at 08:56, Jassi Brar wrote: >> On 26 May 2018 at 01:07, Robin Murphy wrote: >>> On Sat, 26 May 2018 00:33:05 +0530 >>> Jassi Brar

Re: [PATCH] net: netsec: reduce DMA mask to 40 bits

2018-05-25 Thread Jassi Brar
On 26 May 2018 at 08:56, Jassi Brar wrote: > On 26 May 2018 at 01:07, Robin Murphy wrote: >> On Sat, 26 May 2018 00:33:05 +0530 >> Jassi Brar wrote: >> >>> On 25 May 2018 at 18:20, Ard Biesheuvel

Re: [PATCH] net: netsec: reduce DMA mask to 40 bits

2018-05-25 Thread Jassi Brar
On 26 May 2018 at 01:07, Robin Murphy wrote: > On Sat, 26 May 2018 00:33:05 +0530 > Jassi Brar wrote: > >> On 25 May 2018 at 18:20, Ard Biesheuvel >> wrote: >> > The netsec network controller IP can drive 64 address

Re: [PATCH] net: netsec: reduce DMA mask to 40 bits

2018-05-25 Thread Robin Murphy
On Sat, 26 May 2018 00:33:05 +0530 Jassi Brar wrote: > On 25 May 2018 at 18:20, Ard Biesheuvel > wrote: > > The netsec network controller IP can drive 64 address bits for DMA, > > and the DMA mask is set accordingly in the driver. However,

Re: [PATCH] net: netsec: reduce DMA mask to 40 bits

2018-05-25 Thread Jassi Brar
On 25 May 2018 at 18:20, Ard Biesheuvel wrote: > The netsec network controller IP can drive 64 address bits for DMA, and > the DMA mask is set accordingly in the driver. However, the SynQuacer > SoC, which is the only silicon incorporating this IP at the moment, >

Re: [PATCH] net: netsec: reduce DMA mask to 40 bits

2018-05-25 Thread Robin Murphy
On 25/05/18 13:50, Ard Biesheuvel wrote: The netsec network controller IP can drive 64 address bits for DMA, and the DMA mask is set accordingly in the driver. However, the SynQuacer SoC, which is the only silicon incorporating this IP at the moment, integrates this IP in a manner that leaves

[PATCH] net: netsec: reduce DMA mask to 40 bits

2018-05-25 Thread Ard Biesheuvel
The netsec network controller IP can drive 64 address bits for DMA, and the DMA mask is set accordingly in the driver. However, the SynQuacer SoC, which is the only silicon incorporating this IP at the moment, integrates this IP in a manner that leaves address bits [63:40] unconnected. Up until