Re: [PATCH 2/6] seqno-fence: Hardware dma-buf implementation of fencing (v4)

2014-03-03 Thread Daniel Vetter
On Wed, Feb 19, 2014 at 02:25:59PM +0100, Maarten Lankhorst wrote: > op 17-02-14 19:41, Christian König schreef: > >Am 17.02.2014 19:24, schrieb Rob Clark: > >>On Mon, Feb 17, 2014 at 12:36 PM, Christian König > >> wrote: > >>>Am 17.02.2014 18:27, schrieb Rob Clark: > >>> > On Mon, Feb 17, 2014

Re: [PATCH 2/6] seqno-fence: Hardware dma-buf implementation of fencing (v4)

2014-02-19 Thread Maarten Lankhorst
op 17-02-14 19:41, Christian König schreef: Am 17.02.2014 19:24, schrieb Rob Clark: On Mon, Feb 17, 2014 at 12:36 PM, Christian König wrote: Am 17.02.2014 18:27, schrieb Rob Clark: On Mon, Feb 17, 2014 at 11:56 AM, Christian König wrote: Am 17.02.2014 16:56, schrieb Maarten Lankhorst: Th

Re: [PATCH 2/6] seqno-fence: Hardware dma-buf implementation of fencing (v4)

2014-02-17 Thread Christian König
Am 17.02.2014 19:24, schrieb Rob Clark: On Mon, Feb 17, 2014 at 12:36 PM, Christian König wrote: Am 17.02.2014 18:27, schrieb Rob Clark: On Mon, Feb 17, 2014 at 11:56 AM, Christian König wrote: Am 17.02.2014 16:56, schrieb Maarten Lankhorst: This type of fence can be used with hardware sy

Re: [PATCH 2/6] seqno-fence: Hardware dma-buf implementation of fencing (v4)

2014-02-17 Thread Rob Clark
On Mon, Feb 17, 2014 at 12:36 PM, Christian König wrote: > Am 17.02.2014 18:27, schrieb Rob Clark: > >> On Mon, Feb 17, 2014 at 11:56 AM, Christian König >> wrote: >>> >>> Am 17.02.2014 16:56, schrieb Maarten Lankhorst: >>> This type of fence can be used with hardware synchronization for sim

Re: [PATCH 2/6] seqno-fence: Hardware dma-buf implementation of fencing (v4)

2014-02-17 Thread Christian König
Am 17.02.2014 18:27, schrieb Rob Clark: On Mon, Feb 17, 2014 at 11:56 AM, Christian König wrote: Am 17.02.2014 16:56, schrieb Maarten Lankhorst: This type of fence can be used with hardware synchronization for simple hardware that can block execution until the condition (dma_buf[offset] - val

Re: [PATCH 2/6] seqno-fence: Hardware dma-buf implementation of fencing (v4)

2014-02-17 Thread Rob Clark
On Mon, Feb 17, 2014 at 11:56 AM, Christian König wrote: > Am 17.02.2014 16:56, schrieb Maarten Lankhorst: > >> This type of fence can be used with hardware synchronization for simple >> hardware that can block execution until the condition >> (dma_buf[offset] - value) >= 0 has been met. > > > Can

Re: [PATCH 2/6] seqno-fence: Hardware dma-buf implementation of fencing (v4)

2014-02-17 Thread Christian König
Am 17.02.2014 16:56, schrieb Maarten Lankhorst: This type of fence can be used with hardware synchronization for simple hardware that can block execution until the condition (dma_buf[offset] - value) >= 0 has been met. Can't we make that just "dma_buf[offset] != 0" instead? As far as I know th

Re: [PATCH 2/6] seqno-fence: Hardware dma-buf implementation of fencing (v4)

2014-02-17 Thread Rob Clark
On Mon, Feb 17, 2014 at 10:56 AM, Maarten Lankhorst wrote: > This type of fence can be used with hardware synchronization for simple > hardware that can block execution until the condition > (dma_buf[offset] - value) >= 0 has been met. > > A software fallback still has to be provided in case the f

[PATCH 2/6] seqno-fence: Hardware dma-buf implementation of fencing (v4)

2014-02-17 Thread Maarten Lankhorst
This type of fence can be used with hardware synchronization for simple hardware that can block execution until the condition (dma_buf[offset] - value) >= 0 has been met. A software fallback still has to be provided in case the fence is used with a device that doesn't support this mechanism. It is