[Nouveau] [PATCH v4 2/6] drm/nouveau: map pages using DMA API on platform devices

2014-07-11 Thread Ben Skeggs
On Fri, Jul 11, 2014 at 12:35 PM, Alexandre Courbot wrote: > On 07/10/2014 09:58 PM, Daniel Vetter wrote: >> >> On Tue, Jul 08, 2014 at 05:25:57PM +0900, Alexandre Courbot wrote: >>> >>> page_to_phys() is not the correct way to obtain the DMA address of a >>> buffer on a non-PCI system. Use the D

[Nouveau] [PATCH v4 2/6] drm/nouveau: map pages using DMA API on platform devices

2014-07-11 Thread Alexandre Courbot
On 07/11/2014 11:50 AM, Ben Skeggs wrote: > On Fri, Jul 11, 2014 at 12:35 PM, Alexandre Courbot > wrote: >> On 07/10/2014 09:58 PM, Daniel Vetter wrote: >>> >>> On Tue, Jul 08, 2014 at 05:25:57PM +0900, Alexandre Courbot wrote: page_to_phys() is not the correct way to obtain the DMA add

[Nouveau] [PATCH v4 2/6] drm/nouveau: map pages using DMA API on platform devices

2014-07-11 Thread Lucas Stach
Am Freitag, den 11.07.2014, 11:57 +0900 schrieb Alexandre Courbot: [...] > >> Yeah, I am not familiar with i915 but it seems like we are on a similar > >> boat > >> here (excepted ARM is more constrained as to its memory mappings). The > >> strategy in this series is, map buffers used by user-spac

[Nouveau] [PATCH v4 2/6] drm/nouveau: map pages using DMA API on platform devices

2014-07-11 Thread Alexandre Courbot
On 07/10/2014 09:58 PM, Daniel Vetter wrote: > On Tue, Jul 08, 2014 at 05:25:57PM +0900, Alexandre Courbot wrote: >> page_to_phys() is not the correct way to obtain the DMA address of a >> buffer on a non-PCI system. Use the DMA API functions for this, which >> are portable and will allow us to use

[Nouveau] [PATCH v4 2/6] drm/nouveau: map pages using DMA API on platform devices

2014-07-11 Thread Daniel Vetter
On Fri, Jul 11, 2014 at 11:35:23AM +0900, Alexandre Courbot wrote: > On 07/10/2014 09:58 PM, Daniel Vetter wrote: > >On Tue, Jul 08, 2014 at 05:25:57PM +0900, Alexandre Courbot wrote: > >>page_to_phys() is not the correct way to obtain the DMA address of a > >>buffer on a non-PCI system. Use the DM

[Nouveau] [PATCH v4 2/6] drm/nouveau: map pages using DMA API on platform devices

2014-07-10 Thread Daniel Vetter
On Tue, Jul 08, 2014 at 05:25:57PM +0900, Alexandre Courbot wrote: > page_to_phys() is not the correct way to obtain the DMA address of a > buffer on a non-PCI system. Use the DMA API functions for this, which > are portable and will allow us to use other DMA API functions for > buffer synchronizat

[PATCH v4 2/6] drm/nouveau: map pages using DMA API on platform devices

2014-07-08 Thread Alexandre Courbot
page_to_phys() is not the correct way to obtain the DMA address of a buffer on a non-PCI system. Use the DMA API functions for this, which are portable and will allow us to use other DMA API functions for buffer synchronization. Signed-off-by: Alexandre Courbot --- drivers/gpu/drm/nouveau/core/e