similar to: [PATCH 0/7] Adding a proper workaround for fixing RTD3 issues with Nouveau

not much changed since the last time I sent those patches out, but there are a couple of annoying bug fixes, which users would probably never hit unless they do rmmod/modprobe nouveau cycles. Biggest change is that I force the link to a 8.0 speed rather than the speed the GPU came up with. Also this series depends on the PCIe improvement patches I sent out recently. Karol Herbst (4): pci:

Signed-off-by: Karol Herbst <kherbst at redhat.com> Reviewed-by: Lyude Paul <lyude at redhat.com> --- drm/nouveau/nvkm/subdev/pci/gk104.c | 8 ++++---- drm/nouveau/nvkm/subdev/pci/gp100.c | 10 ++++++++++ drm/nouveau/nvkm/subdev/pci/priv.h | 5 +++++ 3 files changed, 19 insertions(+), 4 deletions(-) diff --git a/drm/nouveau/nvkm/subdev/pci/gk104.c

While investigating the runpm issues on my GP107 I noticed that something inside devinit makes runpm break. If Nouveau loads up to the point right before doing devinit, runpm works without any issues, if devinit is ran, not anymore. Out of curiousity I even tried to "bisect" devinit by not running it on vbios provided signed PMU image, but on the devinit parser we have inside Nouveau.

CCing linux-pci and Bjorn Helgaas. Maybe we could get better insights on how a reasonable fix would look like. Anyway, to me this entire issue looks like something which has to be fixed on a PCI level instead of inside a driver, so it makes sense to ask the pci folks if they have any better suggestions. Original cover letter: While investigating the runpm issues on my GP107 I noticed that

On Tue, May 07, 2019 at 10:12:45PM +0200, Karol Herbst wrote: > Apperantly things go south if we suspend the device with a different PCIE > link speed set than it got booted with. Fixes runtime suspend on my gp107. > > This all looks like some bug inside the pci subsystem and I would prefer a > fix there instead of nouveau, but maybe there is no real nice way of doing > that

On Fri, 13 Sep 2019 at 21:33, Karol Herbst <kherbst at redhat.com> wrote: > > Apperantly things go south if we suspend the device with a PCIe link speed > set to 2.5. Fixes runtime suspend on my gp107. > > This all looks like some bug inside the pci subsystem and I would prefer a > fix there instead of nouveau, but maybe there is no real nice way of doing > that outside

I merged the both series I sent out recently into one bigger one so that it's more obvious on why all of that is needed. Biggest changes since last sent: * reworked the ASPM patch * removed "pci: add nvkm_pcie_get_speed" patch Please test this on Laptops and report back if it either breaks something or doesn't fix runpm. Thanks Karol Herbst (6): pci: disable ASPM before

On Tue, 17 Sep 2019 at 18:07, Karol Herbst <kherbst at redhat.com> wrote: > > On Tue, Sep 17, 2019 at 8:01 AM Ben Skeggs <skeggsb at gmail.com> wrote: > > > > On Fri, 13 Sep 2019 at 21:33, Karol Herbst <kherbst at redhat.com> wrote: > > > > > > Apperantly things go south if we suspend the device with a PCIe link speed > > > set to 2.5.

On Tue, May 21, 2019 at 12:30:38AM +0200, Karol Herbst wrote: > On Mon, May 20, 2019 at 11:20 PM Bjorn Helgaas <helgaas at kernel.org> wrote: > > On Tue, May 07, 2019 at 10:12:45PM +0200, Karol Herbst wrote: > > > Apperantly things go south if we suspend the device with a different PCIE > > > link speed set than it got booted with. Fixes runtime suspend on my

On Tue, May 21, 2019 at 03:28:48PM +0200, Karol Herbst wrote: > On Tue, May 21, 2019 at 3:11 PM Bjorn Helgaas <helgaas at kernel.org> wrote: > > On Tue, May 21, 2019 at 12:30:38AM +0200, Karol Herbst wrote: > > > On Mon, May 20, 2019 at 11:20 PM Bjorn Helgaas <helgaas at kernel.org> wrote: > > > > On Tue, May 07, 2019 at 10:12:45PM +0200, Karol Herbst

overall the same as the old stuff, but with better namings and tirivialy improved code here and there Karol Herbst (9): pci: add gk104 variant pci: add gf106 variant pci: implement generic code for PCIe speed change pci: implement pcie speed change for tesla pci: implement pcie speed change on Fermi pci: implement PCIe speed change for kepler+ bios/perf: parse the pci speed from the

overall it is for the most part the same as my older version. I cleaned up some copyright things, so that it is more like the others. Also I moved the print about the max speed supported into preinit and did some other minor cleanups in the 3rd commit. Happy testing (and performance for prime offloading setups) Karol Herbst (9): pci: add gk104 variant pci: add gf106 variant pci: implement

Date: Sun, 16 Apr 2023 11:22:23 +0200 Several update suggestions were taken into account from static source code analysis. Markus Elfring (9): debugfs: Move an expression into a function call parameter in nouveau_debugfs_pstate_set() debugfs: Move a variable assignment behind a null pointer check in nouveau_debugfs_pstate_get() debugfs: Use seq_putc() in

Changes since last sent: * add a patch to set the device into DRM_SWITCH_POWER_CHANGING state (can be dropped actually, I thought I was needing it, came up with a different approach and forgot to delete it, doesn't hurt though) * expose information about runtime suspending to nvkm so that we can run the pcie workaround only on runtime suspend Karol Herbst (8): pci: disable ASPM

On Wed, Aug 14, 2019 at 3:31 PM Karol Herbst <kherbst at redhat.com> wrote: > > This reverts commit 9251a71db62ca9cc7e7cf364218610b0f018c291. > > This was never discussed with anybody Nouveau related and we would have NACKed > this change immediately. > > We have a better workaround, which makes it actually work with Nouveau. No idea > why the comment mentions the

was able to get the lspci prints via ssh. Machine rebooted automatically each time though. relevant dmesg: kernel: nouveau 0000:01:00.0: Refused to change power state, currently in D3 kernel: nouveau 0000:01:00.0: Refused to change power state, currently in D3 kernel: nouveau 0000:01:00.0: Refused to change power state, currently in D3 kernel: nouveau 0000:01:00.0: tmr: stalled at

@bjorn: any further ideas? Otherwise I'd like to just go ahead and fix this issue inside Nouveau and leave it there until we have a better understanding or non Nouveau cases of this issue. On Tue, May 21, 2019 at 7:48 PM Karol Herbst <kherbst at redhat.com> wrote: > > doing the same on the bridge controller with my workarounds applied: > > please note some differences: >

Hi Bjorn, I was playing around with some older information again (write into the PCI config to put the card into d3 state). And there is something which made me very curious: If I put the card manually into any other state besides D0 via the 0x64 pci config register, the card just dies and pci core seems to expect this to not happen. pci_raw_set_power_state has this

It's hard to figure out what systems are actually affected and right now I don't see a good way of removing those... But I'd like to see thos getting removed and drivers fixed instead (which happened at least for nouveau). And as mentioned before, I prefer people working on fixing issues instead of spending time to add firmware level workarounds which are hard to know to which

everything was taken from nvgpu. Main reason for adding is to improve stability of the PCIe link changing code as we might want to depend on it for a workaround fixing our infamous runpm issues on recent laptops Karol Herbst (3): pci: force disable ASPM before changing the link speed pci/gk104: enable dl_mgr safe mode pci/gk104: wait for ltssm idle before changing the link