* [PATCH] drm/nv50-: make dma-objects read-only where appropriate
@ 2013-09-02 14:31 Maarten Lankhorst
[not found] ` <1378132283-19536-1-git-send-email-maarten.lankhorst-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
0 siblings, 1 reply; 2+ messages in thread
From: Maarten Lankhorst @ 2013-09-02 14:31 UTC (permalink / raw)
To: nouveau; +Cc: dri-devel
I don't see why the display engine would need write access to the entirety of
vram, when read-only access is enough.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
---
drivers/gpu/drm/nouveau/nv50_display.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index aab72f5..eac6b2a 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -159,7 +159,7 @@ nv50_dmac_create_fbdma(struct nouveau_object *core, u32 parent)
NV_DMA_IN_MEMORY_CLASS,
&(struct nv_dma_class) {
.flags = NV_DMA_TARGET_VRAM |
- NV_DMA_ACCESS_RDWR,
+ NV_DMA_ACCESS_RD,
.start = 0,
.limit = pfb->ram->size - 1,
.conf0 = NV50_DMA_CONF0_ENABLE |
@@ -172,7 +172,7 @@ nv50_dmac_create_fbdma(struct nouveau_object *core, u32 parent)
NV_DMA_IN_MEMORY_CLASS,
&(struct nv_dma_class) {
.flags = NV_DMA_TARGET_VRAM |
- NV_DMA_ACCESS_RDWR,
+ NV_DMA_ACCESS_RD,
.start = 0,
.limit = pfb->ram->size - 1,
.conf0 = NV50_DMA_CONF0_ENABLE | 0x70 |
@@ -185,7 +185,7 @@ nv50_dmac_create_fbdma(struct nouveau_object *core, u32 parent)
NV_DMA_IN_MEMORY_CLASS,
&(struct nv_dma_class) {
.flags = NV_DMA_TARGET_VRAM |
- NV_DMA_ACCESS_RDWR,
+ NV_DMA_ACCESS_RD,
.start = 0,
.limit = pfb->ram->size - 1,
.conf0 = NV50_DMA_CONF0_ENABLE | 0x7a |
@@ -204,7 +204,7 @@ nvc0_dmac_create_fbdma(struct nouveau_object *core, u32 parent)
NV_DMA_IN_MEMORY_CLASS,
&(struct nv_dma_class) {
.flags = NV_DMA_TARGET_VRAM |
- NV_DMA_ACCESS_RDWR,
+ NV_DMA_ACCESS_RD,
.start = 0,
.limit = pfb->ram->size - 1,
.conf0 = NVC0_DMA_CONF0_ENABLE,
@@ -216,7 +216,7 @@ nvc0_dmac_create_fbdma(struct nouveau_object *core, u32 parent)
NV_DMA_IN_MEMORY_CLASS,
&(struct nv_dma_class) {
.flags = NV_DMA_TARGET_VRAM |
- NV_DMA_ACCESS_RDWR,
+ NV_DMA_ACCESS_RD,
.start = 0,
.limit = pfb->ram->size - 1,
.conf0 = NVC0_DMA_CONF0_ENABLE | 0xfe,
@@ -228,7 +228,7 @@ nvc0_dmac_create_fbdma(struct nouveau_object *core, u32 parent)
NV_DMA_IN_MEMORY_CLASS,
&(struct nv_dma_class) {
.flags = NV_DMA_TARGET_VRAM |
- NV_DMA_ACCESS_RDWR,
+ NV_DMA_ACCESS_RD,
.start = 0,
.limit = pfb->ram->size - 1,
.conf0 = NVC0_DMA_CONF0_ENABLE | 0xfe,
@@ -246,7 +246,7 @@ nvd0_dmac_create_fbdma(struct nouveau_object *core, u32 parent)
NV_DMA_IN_MEMORY_CLASS,
&(struct nv_dma_class) {
.flags = NV_DMA_TARGET_VRAM |
- NV_DMA_ACCESS_RDWR,
+ NV_DMA_ACCESS_RD,
.start = 0,
.limit = pfb->ram->size - 1,
.conf0 = NVD0_DMA_CONF0_ENABLE |
@@ -259,7 +259,7 @@ nvd0_dmac_create_fbdma(struct nouveau_object *core, u32 parent)
NV_DMA_IN_MEMORY_CLASS,
&(struct nv_dma_class) {
.flags = NV_DMA_TARGET_VRAM |
- NV_DMA_ACCESS_RDWR,
+ NV_DMA_ACCESS_RD,
.start = 0,
.limit = pfb->ram->size - 1,
.conf0 = NVD0_DMA_CONF0_ENABLE | 0xfe |
@@ -316,7 +316,7 @@ nv50_dmac_create(struct nouveau_object *core, u32 bclass, u8 head,
NV_DMA_IN_MEMORY_CLASS,
&(struct nv_dma_class) {
.flags = NV_DMA_TARGET_VRAM |
- NV_DMA_ACCESS_RDWR,
+ NV_DMA_ACCESS_RD,
.start = 0,
.limit = pfb->ram->size - 1,
}, sizeof(struct nv_dma_class), &object);
--
1.8.3.4
^ permalink raw reply related [flat|nested] 2+ messages in thread[parent not found: <1378132283-19536-1-git-send-email-maarten.lankhorst-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>]
* Re: [PATCH] drm/nv50-: make dma-objects read-only where appropriate [not found] ` <1378132283-19536-1-git-send-email-maarten.lankhorst-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org> @ 2013-09-04 3:23 ` Ben Skeggs 0 siblings, 0 replies; 2+ messages in thread From: Ben Skeggs @ 2013-09-04 3:23 UTC (permalink / raw) To: Maarten Lankhorst Cc: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org On Tue, Sep 3, 2013 at 12:31 AM, Maarten Lankhorst <maarten.lankhorst-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org> wrote: > I don't see why the display engine would need write access to the entirety of > vram, when read-only access is enough. Meh, this really doesn't matter... We're doing the same setup as nvidia do here, and I see no good reason not to. > > Signed-off-by: Maarten Lankhorst <maarten.lankhorst-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org> > --- > drivers/gpu/drm/nouveau/nv50_display.c | 18 +++++++++--------- > 1 file changed, 9 insertions(+), 9 deletions(-) > > diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c > index aab72f5..eac6b2a 100644 > --- a/drivers/gpu/drm/nouveau/nv50_display.c > +++ b/drivers/gpu/drm/nouveau/nv50_display.c > @@ -159,7 +159,7 @@ nv50_dmac_create_fbdma(struct nouveau_object *core, u32 parent) > NV_DMA_IN_MEMORY_CLASS, > &(struct nv_dma_class) { > .flags = NV_DMA_TARGET_VRAM | > - NV_DMA_ACCESS_RDWR, > + NV_DMA_ACCESS_RD, > .start = 0, > .limit = pfb->ram->size - 1, > .conf0 = NV50_DMA_CONF0_ENABLE | > @@ -172,7 +172,7 @@ nv50_dmac_create_fbdma(struct nouveau_object *core, u32 parent) > NV_DMA_IN_MEMORY_CLASS, > &(struct nv_dma_class) { > .flags = NV_DMA_TARGET_VRAM | > - NV_DMA_ACCESS_RDWR, > + NV_DMA_ACCESS_RD, > .start = 0, > .limit = pfb->ram->size - 1, > .conf0 = NV50_DMA_CONF0_ENABLE | 0x70 | > @@ -185,7 +185,7 @@ nv50_dmac_create_fbdma(struct nouveau_object *core, u32 parent) > NV_DMA_IN_MEMORY_CLASS, > &(struct nv_dma_class) { > .flags = NV_DMA_TARGET_VRAM | > - NV_DMA_ACCESS_RDWR, > + NV_DMA_ACCESS_RD, > .start = 0, > .limit = pfb->ram->size - 1, > .conf0 = NV50_DMA_CONF0_ENABLE | 0x7a | > @@ -204,7 +204,7 @@ nvc0_dmac_create_fbdma(struct nouveau_object *core, u32 parent) > NV_DMA_IN_MEMORY_CLASS, > &(struct nv_dma_class) { > .flags = NV_DMA_TARGET_VRAM | > - NV_DMA_ACCESS_RDWR, > + NV_DMA_ACCESS_RD, > .start = 0, > .limit = pfb->ram->size - 1, > .conf0 = NVC0_DMA_CONF0_ENABLE, > @@ -216,7 +216,7 @@ nvc0_dmac_create_fbdma(struct nouveau_object *core, u32 parent) > NV_DMA_IN_MEMORY_CLASS, > &(struct nv_dma_class) { > .flags = NV_DMA_TARGET_VRAM | > - NV_DMA_ACCESS_RDWR, > + NV_DMA_ACCESS_RD, > .start = 0, > .limit = pfb->ram->size - 1, > .conf0 = NVC0_DMA_CONF0_ENABLE | 0xfe, > @@ -228,7 +228,7 @@ nvc0_dmac_create_fbdma(struct nouveau_object *core, u32 parent) > NV_DMA_IN_MEMORY_CLASS, > &(struct nv_dma_class) { > .flags = NV_DMA_TARGET_VRAM | > - NV_DMA_ACCESS_RDWR, > + NV_DMA_ACCESS_RD, > .start = 0, > .limit = pfb->ram->size - 1, > .conf0 = NVC0_DMA_CONF0_ENABLE | 0xfe, > @@ -246,7 +246,7 @@ nvd0_dmac_create_fbdma(struct nouveau_object *core, u32 parent) > NV_DMA_IN_MEMORY_CLASS, > &(struct nv_dma_class) { > .flags = NV_DMA_TARGET_VRAM | > - NV_DMA_ACCESS_RDWR, > + NV_DMA_ACCESS_RD, > .start = 0, > .limit = pfb->ram->size - 1, > .conf0 = NVD0_DMA_CONF0_ENABLE | > @@ -259,7 +259,7 @@ nvd0_dmac_create_fbdma(struct nouveau_object *core, u32 parent) > NV_DMA_IN_MEMORY_CLASS, > &(struct nv_dma_class) { > .flags = NV_DMA_TARGET_VRAM | > - NV_DMA_ACCESS_RDWR, > + NV_DMA_ACCESS_RD, > .start = 0, > .limit = pfb->ram->size - 1, > .conf0 = NVD0_DMA_CONF0_ENABLE | 0xfe | > @@ -316,7 +316,7 @@ nv50_dmac_create(struct nouveau_object *core, u32 bclass, u8 head, > NV_DMA_IN_MEMORY_CLASS, > &(struct nv_dma_class) { > .flags = NV_DMA_TARGET_VRAM | > - NV_DMA_ACCESS_RDWR, > + NV_DMA_ACCESS_RD, > .start = 0, > .limit = pfb->ram->size - 1, > }, sizeof(struct nv_dma_class), &object); > -- > 1.8.3.4 > > _______________________________________________ > dri-devel mailing list > dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel ^ permalink raw reply [flat|nested] 2+ messages in thread
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2013-09-02 14:31 [PATCH] drm/nv50-: make dma-objects read-only where appropriate Maarten Lankhorst
[not found] ` <1378132283-19536-1-git-send-email-maarten.lankhorst-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2013-09-04 3:23 ` Ben Skeggs
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