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From: Lucas Stach <l.stach@pengutronix.de>
To: "Guido Günther" <agx@sigxcpu.org>
Cc: etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	patchwork-lst@pengutronix.de, kernel@pengutronix.de,
	Russell King <linux+etnaviv@armlinux.org.uk>
Subject: Re: [PATCH v2 2/8] drm/etnaviv: split out cmdbuf mapping into address space
Date: Fri, 09 Aug 2019 11:17:13 +0200	[thread overview]
Message-ID: <1565342233.2323.60.camel@pengutronix.de> (raw)
In-Reply-To: <20190808102625.GA4681@bogon.m.sigxcpu.org>

Am Donnerstag, den 08.08.2019, 12:26 +0200 schrieb Guido Günther:
> Hi,
> On Fri, Jul 05, 2019 at 07:17:21PM +0200, Lucas Stach wrote:
> > This allows to decouple the cmdbuf suballocator create and mapping
> > the region into the GPU address space. Allowing multiple AS to share
> > a single cmdbuf suballoc.
> > 
> > > > Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
> > ---
> >  drivers/gpu/drm/etnaviv/etnaviv_buffer.c | 23 ++++----
> >  drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c | 35 ++++++------
> >  drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.h | 11 +++-
> >  drivers/gpu/drm/etnaviv/etnaviv_dump.c   |  6 +-
> >  drivers/gpu/drm/etnaviv/etnaviv_gpu.c    | 19 +++++--
> >  drivers/gpu/drm/etnaviv/etnaviv_gpu.h    |  3 +-
> >  drivers/gpu/drm/etnaviv/etnaviv_mmu.c    | 70 +++++++++++++++---------
> >  drivers/gpu/drm/etnaviv/etnaviv_mmu.h    | 12 ++--
> >  8 files changed, 114 insertions(+), 65 deletions(-)
[...]
> > --- a/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c
> > +++ b/drivers/gpu/drm/etnaviv/etnaviv_cmdbuf.c
> > @@ -8,6 +8,7 @@
> >  #include <drm/drm_mm.h>
> >  
> >  #include "etnaviv_cmdbuf.h"
> > +#include "etnaviv_gem.h"
> >  #include "etnaviv_gpu.h"
> >  #include "etnaviv_mmu.h"
> >  
> > @@ -21,10 +22,6 @@ struct etnaviv_cmdbuf_suballoc {
> > > >  	void *vaddr;
> > > >  	dma_addr_t paddr;
> >  
> > > > -	/* GPU mapping */
> > > > -	u32 iova;
> > > > -	struct drm_mm_node vram_node; /* only used on MMUv2 */
> > -
> > > >  	/* allocation management */
> > > >  	struct mutex lock;
> > > >  	DECLARE_BITMAP(granule_map, SUBALLOC_GRANULES);
> > @@ -53,26 +50,31 @@ etnaviv_cmdbuf_suballoc_new(struct etnaviv_gpu * gpu)
> > > >  		goto free_suballoc;
> > > >  	}
> >  
> > > > -	ret = etnaviv_iommu_get_suballoc_va(gpu, suballoc->paddr,
> > > > -					    &suballoc->vram_node, SUBALLOC_SIZE,
> > > > -					    &suballoc->iova);
> > > > -	if (ret)
> > > > -		goto free_dma;
> > -
> 
> This removed ret all ret uses in that function so the declaration of ret
> can be dropped as well.

Actually, no. ret is still used in the allocation failure path.

Regards,
Lucas
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  reply	other threads:[~2019-08-09  9:17 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-05 17:17 [PATCH v2 1/8] drm/etnaviv: simplify unbind checks Lucas Stach
2019-07-05 17:17 ` [PATCH v2 2/8] drm/etnaviv: split out cmdbuf mapping into address space Lucas Stach
2019-07-24 13:51   ` Philipp Zabel
2019-08-02 13:39   ` Guido Günther
2019-08-02 14:21     ` Philipp Zabel
2019-08-02 18:23       ` Guido Günther
2019-08-02 18:40   ` Guido Günther
2019-08-08 10:26   ` Guido Günther
2019-08-09  9:17     ` Lucas Stach [this message]
2019-08-09  9:28       ` Guido Günther
2019-07-05 17:17 ` [PATCH v2 3/8] drm/etnaviv: share a single cmdbuf suballoc region across all GPUs Lucas Stach
2019-07-24 15:37   ` Philipp Zabel
2019-07-05 17:17 ` [PATCH v2 4/8] drm/etnaviv: replace MMU flush marker with flush sequence Lucas Stach
2019-07-24 15:45   ` Philipp Zabel
2019-08-13 15:27   ` Guido Günther
2019-07-05 17:17 ` [PATCH v2 5/8] drm/etnaviv: rework MMU handling Lucas Stach
2019-07-29 15:35   ` Philipp Zabel
2019-07-05 17:17 ` [PATCH v2 6/8] drm/etnaviv: split out starting of FE idle loop Lucas Stach
2019-07-29 15:36   ` Philipp Zabel
2019-07-05 17:17 ` [PATCH v2 7/8] drm/etnaviv: provide MMU context to etnaviv_gem_mapping_get Lucas Stach
2019-07-29 15:38   ` Philipp Zabel
2019-07-05 17:17 ` [PATCH v2 8/8] drm/etnaviv: implement per-process address spaces on MMUv2 Lucas Stach
2019-07-30  9:44   ` Philipp Zabel
2019-07-24 12:11 ` [PATCH v2 1/8] drm/etnaviv: simplify unbind checks Philipp Zabel
2019-08-02  8:14 ` Guido Günther

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