lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Tue, 27 Jul 2010 10:49:26 -0700 (PDT)
From:	David Miller <>
Subject: Re: [PATCH] ks8842: Support DMA when accessed via timberdale

From: Richard Röjfors <>
Date: Tue, 27 Jul 2010 11:18:17 +0200

> This patch adds support for RX and TX DMA via the DMA API,
> this is only supported when the KS8842 is accessed via timberdale.
> There is no support for DMA on the generic bus interface it self,
> a state machine inside the FPGA is handling RX and TX transfers to/from
> buffers in the FPGA. The host CPU can do DMA to and from these buffers.
> The FPGA has to handle the RX interrupts, so these must be enabled in
> the ks8842 but not in the FPGA. The driver must not disable the RX interrupt
> that would mean that the data transfers into the FPGA buffers would stop.
> The host shall not enable TX interrupts since TX is handled by the FPGA,
> the host is notified by DMA callbacks when transfers are finished.
> Which DMA channels to use are added as parameters in the platform data struct.
> Signed-off-by: Richard Röjfors <>

Please, no more crazy config options, make the code dynamically use
DMA or not based upon information passed in via the platform_device
object at probe time.
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists