* [PATCH] agp/uninorth: Fix lockups with radeon KMS and >1x.
@ 2011-05-19 14:08 ` Michel Dänzer
0 siblings, 0 replies; 4+ messages in thread
From: Michel Dänzer @ 2011-05-19 14:08 UTC (permalink / raw)
To: Dave Airlie; +Cc: linuxppc-dev, dri-devel
From: Michel Dänzer <daenzer@vmware.com>
This was based on a description by Ben Herrenschmidt:
> I've removed that SBA reset from the normal TLB invalidation path and
> left it only once after turning AGP on.
About six months ago, he said:
> I did it a bit differently, but yeah, you get the idea. I'm doing a
> patch series so don't bother pushing things too hard yet.
But I haven't seen anything from him about this since then, and people are
regularly hitting these lockups, so here we are...
Signed-off-by: Michel Dänzer <daenzer@vmware.com>
---
drivers/char/agp/uninorth-agp.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
index 47c2218..55af723 100644
--- a/drivers/char/agp/uninorth-agp.c
+++ b/drivers/char/agp/uninorth-agp.c
@@ -80,7 +80,7 @@ static void uninorth_tlbflush(struct agp_memory *mem)
ctrl | UNI_N_CFG_GART_INVAL);
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL, ctrl);
- if (uninorth_rev <= 0x30) {
+ if (!mem && uninorth_rev <= 0x30) {
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
ctrl | UNI_N_CFG_GART_2xRESET);
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
--
1.7.5.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH] agp/uninorth: Fix lockups with radeon KMS and >1x.
@ 2011-05-19 14:08 ` Michel Dänzer
0 siblings, 0 replies; 4+ messages in thread
From: Michel Dänzer @ 2011-05-19 14:08 UTC (permalink / raw)
To: Dave Airlie; +Cc: linuxppc-dev, dri-devel
From: Michel Dänzer <daenzer@vmware.com>
This was based on a description by Ben Herrenschmidt:
> I've removed that SBA reset from the normal TLB invalidation path and
> left it only once after turning AGP on.
About six months ago, he said:
> I did it a bit differently, but yeah, you get the idea. I'm doing a
> patch series so don't bother pushing things too hard yet.
But I haven't seen anything from him about this since then, and people are
regularly hitting these lockups, so here we are...
Signed-off-by: Michel Dänzer <daenzer@vmware.com>
---
drivers/char/agp/uninorth-agp.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
index 47c2218..55af723 100644
--- a/drivers/char/agp/uninorth-agp.c
+++ b/drivers/char/agp/uninorth-agp.c
@@ -80,7 +80,7 @@ static void uninorth_tlbflush(struct agp_memory *mem)
ctrl | UNI_N_CFG_GART_INVAL);
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL, ctrl);
- if (uninorth_rev <= 0x30) {
+ if (!mem && uninorth_rev <= 0x30) {
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
ctrl | UNI_N_CFG_GART_2xRESET);
pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
--
1.7.5.1
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dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] agp/uninorth: Fix lockups with radeon KMS and >1x.
2011-05-19 14:08 ` Michel Dänzer
@ 2011-05-20 1:10 ` Benjamin Herrenschmidt
-1 siblings, 0 replies; 4+ messages in thread
From: Benjamin Herrenschmidt @ 2011-05-20 1:10 UTC (permalink / raw)
To: Michel Dänzer; +Cc: linuxppc-dev, Dave Airlie, dri-devel
On Thu, 2011-05-19 at 16:08 +0200, Michel Dänzer wrote:
> From: Michel Dänzer <daenzer@vmware.com>
>
> This was based on a description by Ben Herrenschmidt:
>
> > I've removed that SBA reset from the normal TLB invalidation path and
> > left it only once after turning AGP on.
>
> About six months ago, he said:
>
> > I did it a bit differently, but yeah, you get the idea. I'm doing a
> > patch series so don't bother pushing things too hard yet.
>
> But I haven't seen anything from him about this since then, and people are
> regularly hitting these lockups, so here we are...
>
> Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Oops. I do have a pile of patches, but I never got something "stable"
enough and got distracted by more important stuff. Dave, please merge
this for now.
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Thanks !
Cheers,
Ben.
> ---
> drivers/char/agp/uninorth-agp.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
> index 47c2218..55af723 100644
> --- a/drivers/char/agp/uninorth-agp.c
> +++ b/drivers/char/agp/uninorth-agp.c
> @@ -80,7 +80,7 @@ static void uninorth_tlbflush(struct agp_memory *mem)
> ctrl | UNI_N_CFG_GART_INVAL);
> pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL, ctrl);
>
> - if (uninorth_rev <= 0x30) {
> + if (!mem && uninorth_rev <= 0x30) {
> pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
> ctrl | UNI_N_CFG_GART_2xRESET);
> pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] agp/uninorth: Fix lockups with radeon KMS and >1x.
@ 2011-05-20 1:10 ` Benjamin Herrenschmidt
0 siblings, 0 replies; 4+ messages in thread
From: Benjamin Herrenschmidt @ 2011-05-20 1:10 UTC (permalink / raw)
To: Michel Dänzer; +Cc: linuxppc-dev, Dave Airlie, dri-devel
On Thu, 2011-05-19 at 16:08 +0200, Michel Dänzer wrote:
> From: Michel Dänzer <daenzer@vmware.com>
>
> This was based on a description by Ben Herrenschmidt:
>
> > I've removed that SBA reset from the normal TLB invalidation path and
> > left it only once after turning AGP on.
>
> About six months ago, he said:
>
> > I did it a bit differently, but yeah, you get the idea. I'm doing a
> > patch series so don't bother pushing things too hard yet.
>
> But I haven't seen anything from him about this since then, and people are
> regularly hitting these lockups, so here we are...
>
> Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Oops. I do have a pile of patches, but I never got something "stable"
enough and got distracted by more important stuff. Dave, please merge
this for now.
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Thanks !
Cheers,
Ben.
> ---
> drivers/char/agp/uninorth-agp.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c
> index 47c2218..55af723 100644
> --- a/drivers/char/agp/uninorth-agp.c
> +++ b/drivers/char/agp/uninorth-agp.c
> @@ -80,7 +80,7 @@ static void uninorth_tlbflush(struct agp_memory *mem)
> ctrl | UNI_N_CFG_GART_INVAL);
> pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL, ctrl);
>
> - if (uninorth_rev <= 0x30) {
> + if (!mem && uninorth_rev <= 0x30) {
> pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
> ctrl | UNI_N_CFG_GART_2xRESET);
> pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL,
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^ permalink raw reply [flat|nested] 4+ messages in thread
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2011-05-19 14:08 [PATCH] agp/uninorth: Fix lockups with radeon KMS and >1x Michel Dänzer
2011-05-19 14:08 ` Michel Dänzer
2011-05-20 1:10 ` Benjamin Herrenschmidt
2011-05-20 1:10 ` Benjamin Herrenschmidt
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